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I-MAB

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FY2023 Annual Report · I-MAB
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Table of Contents

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 20-F

(Mark One)

☐ REGISTRATION  STATEMENT  PURSUANT  TO  SECTION  12(b)  OR  12(g)  OF  THE  SECURITIES  EXCHANGE  ACT

OF 1934

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

OR

For the fiscal year ended December 31, 2023.

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

☐ SHELL  COMPANY  REPORT  PURSUANT  TO  SECTION  13  OR  15(d)  OF  THE  SECURITIES  EXCHANGE  ACT  OF

OR

1934

Date of event requiring this shell company report            

For the transition period from                     to                    

Commission file number: 001-39173

I-MAB

(Exact Name of Registrant as Specified in Its Charter)

N/A
(Translation of Registrant’s Name Into English)

Cayman Islands
(Jurisdiction of Incorporation or Organization)

2440 Research Boulevard, Suite 400
Rockville, MD 20850
United States
(Address of Principal Executive Offices)

Joseph Skelton, Chief Financial Officer
2440 Research Boulevard, Suite 400
Rockville, MD 20850
United States
Phone: (240) 745-6330
(Name, Telephone, and/or Facsimile number and Address of Company Contact Person)

Securities registered or to be registered pursuant to Section 12(b) of the Act:

Title of Each Class
American depositary shares, each ten
(10) American depositary shares representing
twenty-three (23) ordinary shares
Ordinary shares, par value US$0.0001 per share*

Trading Symbol
IMAB

Name of Each Exchange
On Which Registered
The Nasdaq Stock Market LLC
(The Nasdaq Global Market)
The Nasdaq Stock Market LLC
(The Nasdaq Global Market)

*

Not for trading, but only in connection with the listing on the Nasdaq Global Market of American depositary shares.

Securities registered or to be registered pursuant to Section 12(g) of the Act:

None
(Title of Class)

    
    
 
 
 
 
 
 
Table of Contents

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act:

None
(Title of Class)

Indicate the number of outstanding shares of each of the issuer’s classes of capital or common stock as of the close of the period covered by the annual report:

185,613,662 ordinary shares outstanding, par value of US$0.0001 per share, excluding 660,200 ordinary shares issued to our depositary bank for bulk issuance of ADSs
reserved for future issuances upon the exercising or vesting of awards granted under our share incentive plans and 7,799,867 treasury shares in the form of ADSs that we
repurchased under our share repurchase programs, as of December 31, 2023.

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.   ☐ Yes       ☒ No

If  this  report  is  an  annual  or  transition  report,  indicate  by  check  mark  if  the  registrant  is  not  required  to  file  reports  pursuant  to  Section  13  or  15(d)  of  the  Securities
Exchange Act of 1934.   ☐  Yes    ☒ No

Note – Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 from their
obligations under those Sections.

Indicate  by  check  mark  whether  the  registrant:  (1)  has  filed  all  reports  required  to  be  filed  by  Section  13  or  15(d)  of  the  Securities  Exchange  Act  of  1934  during  the
preceding  12  months  (or  for  such  shorter  period  that  the  registrant  was  required  to  file  such  reports),  and  (2)  has  been  subject  to  such  filing  requirements  for  the  past
90 days.   ☒ Yes     ☐  No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T
(§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).   ☒ Yes     ☐  No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or an emerging growth company. See definition of
“large accelerated filer,” “accelerated filer,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer  ☐

Accelerated filer  ☒

     Non-accelerated filer  ☐

     Emerging growth company

☐

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the
extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 13(a) of the Exchange Act. ☐

† The  term  “new  or  revised  financial  accounting  standard”  refers  to  any  update  issued  by  the  Financial  Accounting  Standards  Board  to  its  Accounting  Standards
Codification after April 5, 2012.

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial
reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the
correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the
registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:

U.S. GAAP ☒

     International Financial Reporting Standards as issued
by the International Accounting Standards Board

☐

Other ☐

If  “Other”  has  been  checked  in  response  to  the  previous  question,  indicate  by  check  mark  which  financial  statement  item  the  registrant  has  elected  to  follow.
  ☐  Item 17    ☐  Item 18

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).   ☐  Yes ☒   No

(APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY PROCEEDINGS DURING THE PAST FIVE YEARS)

Indicate by check mark whether the registrant has filed all documents and reports required to be filed by Sections 12, 13 or 15(d) of the Securities Exchange Act of

1934 subsequent to the distribution of securities under a plan confirmed by a court.   ☐  Yes    ☐  No

    
    
Table of Contents

INTRODUCTION

FORWARD-LOOKING STATEMENTS

PART I

TABLE OF CONTENTS

     Page
1

IDENTITY OF DIRECTORS, SENIOR MANAGEMENT AND ADVISERS
OFFER STATISTICS AND EXPECTED TIMETABLE
KEY INFORMATION
INFORMATION ON THE COMPANY
UNRESOLVED STAFF COMMENTS
OPERATING AND FINANCIAL REVIEW AND PROSPECTS
DIRECTORS, SENIOR MANAGEMENT AND EMPLOYEES
MAJOR SHAREHOLDERS AND RELATED PARTY TRANSACTIONS
FINANCIAL INFORMATION
THE OFFER AND LISTING
ADDITIONAL INFORMATION
QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
DESCRIPTION OF SECURITIES OTHER THAN EQUITY SECURITIES

DEFAULTS, DIVIDEND ARREARAGES AND DELINQUENCIES
MATERIAL  MODIFICATIONS  TO  THE  RIGHTS  OF  SECURITY  HOLDERS  AND  USE  OF

PROCEEDS

CONTROLS AND PROCEDURES
AUDIT COMMITTEE FINANCIAL EXPERT
CODE OF ETHICS
PRINCIPAL ACCOUNTANT FEES AND SERVICES
EXEMPTIONS FROM THE LISTING STANDARDS FOR AUDIT COMMITTEES
PURCHASES OF EQUITY SECURITIES BY THE ISSUER AND AFFILIATED PURCHASERS
CHANGE IN REGISTRANT’S CERTIFYING ACCOUNTANT
CORPORATE GOVERNANCE
MINE SAFETY DISCLOSURE
DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS
INSIDER TRADING POLICIES
CYBERSECURITY

ITEM 1.
ITEM 2.
ITEM 3.
ITEM 4.
ITEM 4A.
ITEM 5.
ITEM 6.
ITEM 7.
ITEM 8.
ITEM 9.
ITEM 10.
ITEM 11.
ITEM 12.

PART II

ITEM 13.

ITEM 14.
ITEM 15.
ITEM 16A.
ITEM 16B.
ITEM 16C.
ITEM 16D.
ITEM 16E.
ITEM 16F.
ITEM 16G.
ITEM 16H.
ITEM 16I.
ITEM 16J.
ITEM 16K.

PART III

ITEM 17.
ITEM 18.
ITEM 19.

FINANCIAL STATEMENTS
FINANCIAL STATEMENTS
EXHIBITS

SIGNATURES

i

2

4

4
4
4
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145
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Table of Contents

INTRODUCTION

Unless otherwise indicated and except where the context otherwise requires, references in this annual report on Form 20-F to:

● “ADRs” refer to the American depositary receipts that evidence our ADSs;

● “ADSs” refer to our American depositary shares, each ten (10) ADSs represent twenty-three (23) ordinary shares;

● “China” or “the PRC” refers to the People’s Republic of China, excluding, for the purposes of this annual report only, Hong

Kong, Macau and Taiwan, and “Greater China” does not exclude Hong Kong, Macau and Taiwan;

● “CRO” refers to a contract research organization;

● “FDA” refers to the U.S. Food and Drug Administration;

● “divested PRC subsidiaries” refer to I-Mab Biopharma Co., Ltd., which was divested along with the Greater China assets and

business operations in 2024, and Zhejiang Tianli Pharmaceutical Sales Co., Ltd., which was separately divested in 2023;

● “Greater  China  assets  and  business  operations”  refer  to  the  100%  equity  interest  in  I-Mab  Biopharma  Co.,  Ltd.,  or  I-Mab
Shanghai, our divested PRC subsidiary that operated our company’s business in China, including (i) the Greater China portfolio
and (ii) the operations of the research & development center of I-Mab Shanghai;

● “Greater  China  portfolio”  refers  to  the  investigational  drugs  with  Greater  China  rights  that  we  divested,  including  (i)  drug
candidates  we  in-licensed  from  reputable  global  biopharmaceutical  companies  and  (ii)  drug  candidates  we  developed  or  co-
developed in-house;

● “Global portfolio” refers to our own in-house developed or co-developed novel or differentiated drug candidates, for most of

which we own ex-Greater China rights;

● “I-Mab,” “we,” “us,” “our company” and “our” refer to I-Mab, a Cayman Islands exempted company, and its subsidiaries, and,
in  the  context  of  describing  the  operations  and  consolidated  financial  information  prior  to  the  completion  of  the  divestiture
transaction of business operation in China, the divested PRC subsidiaries;

● “IND” refers to investigational new drug;

● “RMB” refers to the legal currency of China;

● “SEC” refers to the United States Securities and Exchange Commission;

● “shares” or “ordinary shares” refer to our ordinary shares, par value US$0.0001 per share;

● “US$,” “U.S. dollars,” “$,” and “dollars” refer to the legal currency of the United States; and

● “HK$” refers to the legal currency of Hong Kong.

In April 2024, we closed the divestiture of the Greater China assets and business operations. Among other transaction components,
we transferred all of the outstanding equity interest in I-Mab Biopharma Co., Ltd. to I-Mab Biopharma (Hangzhou) Co., Ltd., or I-Mab
Hangzhou, an unconsolidated investee, on a cash-free and debt-free basis, for an aggregate consideration of the RMB equivalent of up to
US$80 million, contingent on I-Mab Hangzhou group’s achievement of certain future regulatory and sales-based milestone events. As a
result of the divestiture transaction closing, from the second quarter of 2024, we have ceased to consolidate the divested entities, assets
and businesses as well as their corresponding financial results, which includes the future development costs of the divested Greater China
assets and business operations.

Unless otherwise specifically stated, the information relating to the business operations is disclosed on a continuing operations basis,
which excludes the divested Greater China assets and business operations. The audited consolidated financial information presented in
this annual report did not take into account the divestiture of the Greater China assets and business operations that was closed in April
2024. For the year ending December 31, 2024, we expect that our financial condition and results of operations will be materially affected
by the divestiture and our historical results will not be indicative of future financial condition or results of operations.

For  the  years  presented  in  our  audited  consolidated  financial  statements  included  elsewhere  in  this  annual  report,  our  reporting
currency is Renminbi. Unless otherwise noted, all translations from RMB to U.S. dollars and from U.S. dollars to RMB in this annual
report  are  made  at  a  rate  of  RMB7.0999  to  US$1.00,  the  exchange  rate  in  effect  as  of  December  29,  2023  as  set  forth  in  the  H.10
statistical release of The Board of Governors of the Federal Reserve System. We make no representation that any RMB or U.S. dollar
amounts could have been, or could be, converted into U.S. dollars or RMB, as the case may be, at any particular rate, or at all.

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FORWARD-LOOKING STATEMENTS

This  annual  report  on  Form  20-F  contains  forward-looking  statements  that  relate  to  our  current  expectations  and  views  of  future
events.  These  statements  involve  known  and  unknown  risks,  uncertainties  and  other  factors  that  may  cause  our  actual  results,
performance  or  achievements  to  be  materially  different  from  those  expressed  or  implied  by  the  forward-looking  statements.  These
statements are made under the “safe harbor” provisions of the U.S. Private Securities Litigations Reform Act of 1995.

You can identify some of these forward-looking statements by words or phrases such as “may,” “will,” “expect,” “anticipate,” “aim,”
“estimate,”  “intend,”  “plan,”  “believe,”  “is/are  likely  to,”  “potential,”  “continue”  or  other  similar  expressions.  We  have  based  these
forward-looking  statements  largely  on  our  current  expectations  and  projections  about  future  events  that  we  believe  may  affect  our
financial  condition,  results  of  operations,  business  strategy  and  financial  needs.  These  forward-looking  statements  include  statements
relating to:

● the timing of initiation and completion, and the progress of our drug discovery and research programs;

● the timing and likelihood of regulatory filings and approvals;

● our ability to advance our drug candidates into drugs, and the successful completion of clinical trials;

● the approval, pricing and reimbursement of our drug candidates;

● the commercialization of our drug candidates;

● the market opportunities and competitive landscape of our drug candidates;

● the payment, receipt and timing of any milestone payments in relation to the licensing agreements;

● estimates of our costs, expenses, future revenues, capital expenditures and our needs for additional financing;

● our ability to attract and retain senior management and key employees;

● our future business development, financial condition and results of operations;

● future developments, trends, conditions and competitive landscape in the industry and markets in which we operate;

● our strategies, plans, objectives and goals and our ability to successfully implement these strategies, plans, objectives and goals;

● our ability to obtain and maintain protection of intellectual property for our technology and drug candidates;

● our ability to continue to maintain our market position in the biopharmaceutical and biotechnology industries;

● our ability to identify and integrate suitable acquisition targets;

● changes to regulatory and operating conditions in our industry and markets;

● the  expected  aggregate  consideration  for  the  divestiture  of  I-Mab  Shanghai  and  the  total  amount  of  potential  repurchase
obligations owed by I-Mab Biopharma Hong Kong Limited, or I-Mab Hong Kong, and our company to the non-participating
shareholders of I-Mab Hangzhou; and

● the  expected  decrease  of  our  research  and  development  expenses  and  administrative  expenses  in  the  near  future  due  to  the

divestiture of the Greater China assets and business operations.

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You should read this annual report and the documents that we refer to in this annual report and have filed as exhibits to this annual
report  completely  and  with  the  understanding  that  our  actual  future  results  may  be  materially  different  from  what  we  expect.  Other
sections  of  this  annual  report  discuss  factors  which  could  adversely  impact  our  business  and  financial  performance.  Moreover,  we
operate in an evolving environment. New risk factors emerge from time to time and it is not possible for our management to predict all
risk factors, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may
cause actual results to differ materially from those contained in any forward-looking statements. We qualify all of our forward-looking
statements by these cautionary statements.

You should not rely upon forward-looking statements as predictions of future events. The forward-looking statements made in this
annual  report  relate  only  to  events  or  information  as  of  the  date  on  which  the  statements  are  made  in  this  annual  report.  Except  as
required  by  law,  we  undertake  no  obligation  to  update  or  revise  publicly  any  forward-looking  statements,  whether  as  a  result  of  new
information,  future  events  or  otherwise,  after  the  date  on  which  the  statements  are  made  or  to  reflect  the  occurrence  of  unanticipated
events.

3

Table of Contents

PART I

ITEM 1.

IDENTITY OF DIRECTORS, SENIOR MANAGEMENT AND ADVISERS

Not applicable.

ITEM 2.

OFFER STATISTICS AND EXPECTED TIMETABLE

Not applicable.

ITEM 3.

KEY INFORMATION

Our Holding Company Structure

I-Mab is not an operating company but a Cayman Islands holding company with its current business operations primarily conducted
by its subsidiary based in the United States. Investors in our ADSs are purchasing equity interest in a holding company incorporated in
the Cayman Islands instead of equity interest in our operating subsidiaries. This structure involves unique risks to investors who hold our
ADSs.

Historically,  we  conducted  business  operations  in  China  through  I-Mab  Biopharma  Co.,  Ltd.,  or  I-Mab  Shanghai,  to  advance  the
Greater China portfolio. In February 2024, we entered into definitive agreements with I-Mab Biopharma (Hangzhou) Co., Ltd., or I-Mab
Hangzhou,  an  unconsolidated  investee  of  ours,  and  a  group  of  China-based  investors  to  divest  the  Greater  China  assets  and  business
operations. In April 2024, we closed the divestiture of the Greater China assets and business operations. Following these transactions, we
currently conduct our business operations primarily through our U.S. subsidiary, and only a small portion of business operations relating
to  research  and  development  activities  via  potential  collaboration  with  I-Mab  Shanghai,  through  our  PRC  subsidiary.  However,  any
operations  that  we  may  conduct  through  our  PRC  subsidiary  are  subject  to  complex  and  evolving  PRC  laws  and  regulations.  For
example, the PRC government has issued statements and regulatory actions relating to areas such as the regulatory approvals on offshore
offerings  and  listings  by,  and  foreign  investment  in,  companies  with  operations  in  China,  and  implemented  industry-wide  regulations,
including cybersecurity and data privacy related regulations. The PRC government has significant authority in regulating any operations
that we may conduct through our PRC subsidiary and may influence any operations that we may conduct through our PRC subsidiary. It
may exert more oversight and control over offerings conducted overseas by, and foreign investment in, issuers with operations in China,
which could significantly limit or completely hinder our ability to offer or continue to offer securities to investors. Implementation of
industry-wide  regulations,  including  data  security  or  anti-monopoly  related  regulations,  in  this  nature  may  cause  the  value  of  such
securities to significantly decline.

In  addition,  we  also  face  risks  arising  from  the  prospective  uncertainties  associated  with  the  ability  of  the  Public  Company
Accounting Oversight Board (United States), or the PCAOB, to completely inspect registered public accounting firms headquartered in
China  (including  our  independent  auditor).  These  risks  and  uncertainties  may  impact  our  ability  to  conduct  certain  businesses,  accept
foreign  investments,  or  list  or  conduct  offerings  on  a  United  States  or  other  foreign  exchange,  and  could  result  in  a  material  adverse
change  in  our  operations  and  the  value  of  our  ADSs,  significantly  limit  or  completely  hinder  our  ability  to  offer  or  continue  to  offer
securities  to  investors,  or  cause  such  securities  to  significantly  decline  in  value.  For  a  detailed  description  of  risks  related  to  doing
business in China, see “Item 3. Key Information—D. Risk Factors—Risks Related to Doing Business in China.”

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Permissions Required from the PRC Authorities for the Offering of Our Securities

The  PRC  government  has  promulgated  certain  regulations  and  rules  to  exert  more  oversight  and  control  over  offerings  that  are
conducted  overseas  and/or  foreign  investment  in  China-based  issuers.  In  connection  with  the  nature  and  scale  of  data  processed  or
handled  by  us  in  our  business  operations  and  our  historical  issuance  of  securities  to  foreign  investors,  under  the  current  PRC  laws,
regulations and regulatory rules, as of the date of this annual report, we and our PRC subsidiary, (i) are not required to go through the
filing  procedures  with  regard  to  the  listing  and  historical  issuance  of  securities  by  our  company  to  foreign  investors  with  the  China
Securities  Regulatory  Commission,  or  the  CSRC,  under  the  Trial  Administrative  Measures  of  the  Overseas  Securities  Offering  and
Listing  by  Domestic  Companies,  (ii)  are  not  required  by  the  Cyberspace  Administration  of  China,  or  the  CAC,  or  any  of  its  local
counterparts,  to  go  through  the  cybersecurity  review  under  the  Cybersecurity  Review  Measures,  and  (iii)  have  not  received  or  were
denied such permissions by the CSRC or the CAC. Nevertheless, in the event that we conduct any securities offerings in the future that
will  be  captured  by  the  trial  administrative  measures,  we  will  have  to  go  through  the  filing  procedures  with  the  CSRC  within  three
business days following the closing of the securities issuance or offering. For more detailed information, see “Item 3. Key Information—
D.  Risk  Factors—Risks  Related  to  Our  Financial  Position  and  Need  for  Additional  Capital—The  approval  of  and  filing  with  PRC
government authorities may be required in connection with our offshore offerings under PRC law, and, if required, we cannot predict
whether or for how long we will be able to obtain such approval or complete such filing.”

The Holding Foreign Companies Accountable Act

Pursuant to the Holding Foreign Companies Accountable Act, which was enacted on December 18, 2020 and further amended by
the Consolidated Appropriations Act, 2023 signed into law on December 29, 2022, or the HFCAA, if the SEC determines that we have
filed  audit  reports  issued  by  a  registered  public  accounting  firm  that  has  not  been  subject  to  inspections  by  the  PCAOB  for  two
consecutive years, the SEC will prohibit our shares or the ADSs from being traded on a national securities exchange or in the over-the-
counter trading market in the United States. On December 16, 2021, the PCAOB issued a report to notify the SEC of its determination
that the PCAOB was unable to inspect or investigate completely registered public accounting firms headquartered in mainland China and
Hong Kong, including our auditor. In May 2022, the SEC conclusively listed us as a Commission-Identified Issuer under the HFCAA
following the filing of this annual report on Form 20-F for the fiscal year ended December 31, 2021. On December 15, 2022, the PCAOB
issued  a  report  that  vacated  its  December  16,  2021  determination  and  removed  mainland  China  and  Hong  Kong  from  the  list  of
jurisdictions  where  it  is  unable  to  inspect  or  investigate  completely  registered  public  accounting  firms.  For  this  reason,  we  were  not
identified as a Commission-Identified Issuer under the HFCAA after we filed our annual report on Form 20-F for the fiscal year ended
December  31,  2022,  and  do  not  expect  to  be  so  identified  after  we  file  this  annual  report  on  Form  20-F  for  the  fiscal  year  ended
December 31, 2023. Each year, the PCAOB will determine whether it can inspect and investigate completely audit firms in mainland
China and Hong Kong, among other jurisdictions. If the PCAOB determines in the future that it no longer has full access to inspect and
investigate completely accounting firms in mainland China and Hong Kong and we continue to use an accounting firm headquartered in
one  of  these  jurisdictions  to  issue  an  audit  report  on  our  financial  statements  filed  with  the  SEC,  we  would  be  identified  as  a
Commission-Identified  Issuer  following  the  filing  of  the  annual  report  on  Form  20-F  for  the  relevant  fiscal  year.  There  can  be  no
assurance that we would not be identified as a Commission-Identified Issuer for any future fiscal year, and if we were so identified for
two consecutive years, we would become subject to the prohibition on trading under the HFCAA. For more details, see “Item 3. Key
Information—D.  Risk  Factors—Risks  Related  to  Doing  Business  in  China—The  PCAOB  had  historically  been  unable  to  inspect  our
auditor in relation to their audit work performed for our financial statements and the inability of the PCAOB to conduct inspections of
our auditor in the past has deprived our investors with the benefits of such inspections” and “Item 3. Key Information—D. Risk Factors
—Risks Related to Doing Business in China—Our ADSs may be prohibited from trading in the United States under the HFCAA in the
future if the PCAOB is unable to inspect or investigate completely auditors located in China. The delisting of the ADSs, or the threat of
their  being  delisted,  may  materially  and  adversely  affect  the  value  of  your  investment.”  In  the  future,  we  may  consider  changing  our
auditor to a public accounting firm headquartered in the United States.

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Cash and Asset Flows through Our Organization

I-Mab is a holding company with no operations of its own. We primarily conduct our business through our subsidiary in the United
States.  As  a  result,  although  other  means  are  available  for  us  to  obtain  financing  at  the  holding  company  level,  our  ability  to  pay
dividends to the shareholders and investors of the ADSs and to service any debt it may incur may depend upon dividends paid by our
subsidiaries. If any of our subsidiaries incur debt on its own behalf in the future, the instruments governing such debt may restrict its
ability  to  pay  dividends  to  I-Mab.  In  addition,  our  PRC  subsidiary  is  permitted  to  pay  dividends  to  I-Mab  only  out  of  its  retained
earnings, if any, as determined in accordance with PRC accounting standards and regulations. Further, our PRC subsidiary is required to
make  appropriations  to  certain  statutory  reserve  funds  or  may  make  appropriations  to  certain  discretionary  funds,  which  are  not
distributable as cash dividends except in the event of a solvent liquidation of the companies. For more details, see “Item 5. Operating and
Financial Review and Prospects—B. Liquidity and Capital Resources—Holding Company Structure.”

Under PRC laws and regulations, our PRC subsidiary is subject to certain restrictions with respect to paying dividends or otherwise
transferring any of their net assets to us. Remittance of dividends by a wholly foreign-owned enterprise out of China is also subject to
examination by the banks designated by SAFE. The amounts restricted include the paid-up capital and the statutory reserve funds of our
existing and divested PRC subsidiaries, totaling RMB486.9 million, RMB490.0 million and RMB492.6 million (US$69.6 million) as of
December 31, 2021, 2022 and 2023, respectively. Furthermore, cash transfers from our PRC subsidiary to entities outside of China are
subject to PRC government control of currency conversion. Shortages in the availability of foreign currency may temporarily delay the
ability of our PRC subsidiary to remit sufficient foreign currency to pay dividends or other payments to us, or otherwise satisfy their
foreign currency denominated obligations. For the years ended December 31, 2021, 2022 and 2023, no dividends or distributions were
made to I-Mab by our existing subsidiaries and divested PRC subsidiaries.

Under  PRC  law,  I-Mab  may  provide  funding  to  our  PRC  subsidiary  only  through  capital  contributions  or  loans,  subject  to
satisfaction of applicable government registration and approval requirements. In the years ended December 31, 2021, 2022 and 2023, I-
Mab  extended  loans  with  outstanding  principal  amount  of  RMB1,079.6  million,  RMB898.6  million  and  RMB116.4  million  (US$16.4
million), respectively, to our existing intermediate holding companies and subsidiaries and divested PRC subsidiaries.

I-Mab  has  not  declared  or  paid  any  cash  dividends,  nor  does  it  have  any  present  plan  to  pay  any  cash  dividends  on  our  ordinary
shares in the foreseeable future. We currently intend to retain most, if not all, of our available funds and any future earnings to operate
and develop our business. See “Item 8. Financial Information—A. Consolidated Statements and Other Financial Information—Dividend
Policy.”  For  PRC  and  United  States  federal  income  tax  considerations  of  an  investment  in  our  ADSs,  see  “Item  10.  Additional
Information—E. Taxation.”

Selected Financial Data

As  of  December  31,  2023,  we  had  cash,  cash  equivalents,  and  short-term  investments  of  RMB2.3  billion  (US$321.8  million),
compared with RMB3.5 billion as of December 31, 2022. Following the divestiture of the Greater China assets and business operations,
we ceased to fund the Greater China portfolio and our cash balance is expected to provide us with adequate near-term funding to support
our focused pipeline of three clinical stage assets.

The following selected consolidated statements of comprehensive income (loss) data for the years ended December 31, 2021, 2022
and 2023, selected consolidated balance sheet data as of December 31, 2022 and 2023 and selected consolidated statements of cash flow
data  for  the  years  ended  December  31,  2021,  2022  and  2023  have  been  derived  from  our  audited  consolidated  financial  statements
included elsewhere in this annual report. The selected consolidated statements of comprehensive loss data for the years ended December
31,  2019  and  2020,  selected  consolidated  balance  sheet  data  as  of  December  31,  2019,  2020  and  2021,  and  selected  consolidated
statements of cash flow data for the years ended December 31, 2019 and 2020 have been derived from our audited consolidated financial
statements that are not included in this annual report. Our consolidated financial statements are prepared and presented in accordance
with accounting principles generally accepted in the United States of America, or U.S. GAAP.

6

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Our  historical  results  do  not  necessarily  indicate  results  expected  for  any  future  periods.  The  selected  consolidated  financial  data
should be read in conjunction with, and are qualified in their entirety by reference to, our audited consolidated financial statements and
related notes and “Item 5. Operating and Financial Review and Prospects” below.

For the Year Ended December 31,

Selected Consolidated Statements of Comprehensive Income (Loss)

2019
     RMB

2020
RMB

2021
RMB

2022
RMB

RMB
(in thousands, except for share and per share data)

2023

US$

Data:
Revenues
Licensing and collaboration revenue(1)
Supply of investigational products
Total revenues
Cost of revenues
Expenses
Research and development expenses(2)
Administrative expenses(2)
Impairment of goodwill(3)
(Loss) income from operations
Interest income
Interest expense
Other (expenses) income, net
Equity in loss of affiliates(2)
Fair value change of warrants
(Loss) income before income tax expense
Income tax (expense) benefit
Net (loss) income attributable to I-Mab
Deemed  dividend 

to  Series  C-1  preferred 

shareholders 

at

extinguishment of Series C-1 Preferred Shares

Deemed  dividend  to  Series  B-1,  B-2  and  C  preferred  shareholders  at

modification of Series B-1, B-2 and C Preferred Shares
Net (loss) income attributable to ordinary shareholders
Other comprehensive income (loss)
Foreign currency translation adjustments, net of nil tax
Total comprehensive (loss) income attributable to I-Mab
Net (loss) income attributable to ordinary shareholders
Weighted-average  number  of  ordinary  shares  used  in  calculating

net income (loss) per share(3)

Basic
Diluted
Net (loss) income per share attributable to ordinary shareholders(3)  
Basic
Diluted
Net (loss) income per ADS attributable to ordinary shareholders(3)
Basic
Diluted

Notes:

 30,000  
—  
 30,000  
—  

 1,542,668  
—  
 1,542,668  
—  

 40,115  
 47,911  
 88,026  
 (46,432) 

 (840,415) 
 (654,553) 

 —

 (1,464,968) 
 30,570  
 (2,991) 
 (20,205) 
—  
 5,644  
 (1,451,950) 
—  
 (1,451,950) 

 (984,689) 
 (402,409) 

 (1,212,958) 
 (899,943) 

 —

 155,570  
 24,228  
 (957) 
 412,892  
 (108,587) 
—  
 483,146  
 (12,231) 
 470,915  

 —

 (2,071,307) 
 21,333  
—  
 83,162  
 (367,883) 
—  
 (2,334,695) 
 3,154  
 (2,331,541) 

 (249,665) 
 28,102  
 (221,563) 
 (27,237) 

 (904,901) 
 (815,766) 

 —

 (1,969,467) 
 26,908  
 (9) 
 (126,587) 
 (437,465) 
—  
 (2,506,620) 
 (697) 
 (2,507,317) 

 16,814  
 10,830  
 27,644  
—  

 (810,646) 
 (453,017) 
 (162,574)
 (1,398,593) 
 51,749  
 (722) 
 (38,109) 
 (80,019) 
—  
 (1,465,694) 
—  
 (1,465,694) 

 2,368
 1,525
 3,893
—

 (114,177)
 (63,806)
 (22,898)
 (196,988)
 7,289
 (102)
 (5,368)
 (11,270)
—
 (206,439)
—
 (206,439)

 (5,283) 

—  

—  

—  

—  

—

 (27,768) 
 (1,485,001) 

 10,747  
 (1,441,203) 
 (1,485,001) 

—  
 470,915  

—  
 (2,331,541) 

—  
 (2,507,317) 

—  
 (1,465,694) 

 (120,920) 
 349,995  
 470,915  

 (135,717) 
 (2,467,258) 
 (2,331,541) 

 400,304  
 (2,107,013) 
 (2,507,317) 

 84,497  
 (1,381,197) 
 (1,465,694) 

—
 (206,439)

 11,901
 (194,538)
 (206,439)

 7,381,230  
 7,381,230  

 134,158,824  
 157,231,652  

 174,707,055  
 174,707,055  

 189,787,292  
 189,787,292  

 191,423,850  
 191,423,850  

 191,423,850
 141,423,850

 (201.19) 
 (201.19) 

 (462.74) 
 (462.74) 

 3.51  
 3.00  

 8.07  
 6.90  

 (13.35) 
 (13.35) 

 (30.71) 
 (30.71) 

 (13.21) 
 (13.21) 

 (30.38) 
 (30.38) 

 (7.66) 
 (7.66) 

 (17.62) 
 (17.62) 

 (1.08)
 (1.08)

 (2.48)
 (2.48)

(1) The licensing and collaboration revenue of RMB-249.7 million (US$-36.2 million) was primarily due to a non-cash adjustment of
US$-48.0 million (equivalent to RMB-314.2 million) recorded in the second half of 2022 following the amendment to the original
license  and  the  overall  collaboration  arrangement  with  AbbVie  Ireland  Unlimited  Company  in  August  2022.  This  overall
amendment led to a lowered probability of achieving a key milestone that was included in the consideration of revenue recognition
in prior years. For more details, see “Item 5. Operating and Financial Review and Prospects.”

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(2) Share-based compensation expenses were allocated as follows:

Research and development expenses
Administrative expenses
Equity in loss of affiliates
Total

2019

2020

2021

2022

2023

     RMB      RMB      RMB      RMB      RMB      US$

For the Year Ended December 31,

(in thousands)

 470  
 514,733  
—  
 515,203  

 284,431  
 209,033  
 32,707  
 526,171  

 201,926  
 406,683  
 13,267  
 621,876  

 117,876  
 239,272  
 13,852  
 371,000  

 66,758  
 126,244  
 4,815  
 197,817  

 9,403
 17,781
 678
 27,862

(3)

In the course of preparing our audited consolidated financial statements for the year ended December 31, 2023, We corrected the net
loss  per  share  attributable  to  ordinary  shareholders  and  net  loss  per  ADS  attributable  to  ordinary  sharesholders  information
contained in the earnings release reporting our unaudited financial results for the full year ended December 31, 2023, which was
publicly announced and furnished with the SEC through our current report on Form 6-K in March 2024. The amounts reported in
the  earnings  release  were  understated  by  RMB0.47  (US$0.07)  and  RMB1.08  (US$0.15),  respectively.  We  also  reclassified
impairment  of  goodwill  amounted  to  RMB162.6  million  (US$22.9  million)  for  the  year  ended  December  31,  2023  to  loss  from
operations, as compared to that reported in the same earnings release.

8

 
 
 
 
 
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The following table presents our selected consolidated statements of balance sheet data as of the dates indicated:

Selected  Consolidated  Statements  of  Balance

2019
RMB

2020
RMB

As of December 31,
2022
RMB

2021
RMB

(in thousands)

2023

RMB

US$

Sheet Data:
Current assets:
Cash and cash equivalents
Short-term restricted cash
Accounts receivable
Contract assets
Short-term investments
Inventories
Prepayments and other receivables
Total current assets
Long-term restricted cash
Property, equipment and software
Operating lease right-of-use assets
Intangible assets
Goodwill
Investment accounted for using the equity method  
Other non-current assets
Total assets
Total liabilities
Total mezzanine equity
Shareholders’ (deficit)/equity
Ordinary shares(1)
Treasury stock(1)
Additional paid-in capital(1)
Accumulated other comprehensive income (loss)  
Accumulated deficit
Total shareholders’ (deficit)/equity
Total 

liabilities,  mezzanine 

equity 

and

 1,137,473  
 55,810

 —  
—  
 32,000  
—  
 136,036  
 1,361,319  

 —

 30,069  
 16,435  
 148,844  
 162,574  
 —  
 18,331  
 1,737,572  
 668,090  
 3,104,177  

 4,758,778  

 3,523,632  

—

 130,498  
 227,391  
 31,530  
—  
 195,467  
 5,343,664  

 —

 25,272  
 14,997  
 120,444  
 162,574  
 664,832  
 2,010  
 6,333,793  
 706,648  
—  

—

 33,081  
 253,780  
 753,164  
 27,237  
 190,824  
 4,781,718  

 —

 45,716  
 112,781  
 119,666  
 162,574  
 352,106  
 26,634  
 5,601,195  
 1,041,635  
—  

 3,214,005  
 96,764

 —  
—  
 235,429  
—  
 80,278  
 3,626,476  

 —

 60,841  
 63,125  
 118,888  
 162,574  
 30,850  
 10,911  
 4,073,665  
 1,163,763  
—  

 2,141,445  

—
 —  
—  
 143,221  
—  
 52,003  
 2,336,669  
 58,913
 36,511  
 46,400  
 118,110  
—  
 12,082  
 4,282  
 2,612,967  
 894,811  
—  

 301,616
—
 —
—
 20,172
—
 7,325
 329,113
 8,298
 5,142
 6,535
 16,635
—
 1,702
 603
 368,028
 126,031
—

 6  
—  
 389,379  
 70,127  
 (2,494,207) 
 (2,034,695) 

 114  
—  
 7,701,116  
 (50,793) 
 (2,023,292) 
 5,627,145  

 126  
—  
 9,100,777  
 (186,510) 
 (4,354,833) 
 4,559,560  

 132  
 (21,249) 
 9,579,375  
 213,794  
 (6,862,150) 
 2,909,902  

 133  
 (56,803) 
 9,804,379  
 298,291  
 (8,327,844) 
 1,718,156  

 19
 (8,001)
 1,380,918
 42,013
 (1,172,952)
 241,997

shareholders’ equity/(deficit)

 1,737,572  

 6,333,793  

 5,601,195  

 4,073,665  

 2,612,967  

 368,028

Note:

(1)

In the course of preparing our audited consolidated financial statements for the year ended December 31, 2023, we corrected the
shareholders’  (deficit)/equity  balances  of  ordinary  shares,  treasury  stock  and  additional  paid-in  capital  contained  in  the  earnings
release  reporting  our  unaudited  financial  results  for  the  full  year  ended  December  31,  2023,  which  was  publicly  announced  and
furnished with the SEC through our current report on Form 6-K in March 2024. The amounts reported in the earnings release were
overstated by RMB2.8 thousand (US$0.4 thousand), RMB25.7 million (US$3.6 million) and RMB25.7 million (US$3.6 million),
respectively.

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The following table presents our selected consolidated statements of cash flow data for the years indicated:

Selected  Consolidated  Statements  of  Cash  Flow

Data:

Net cash (used in) generated from operating activities  
Net cash generated from (used in) investing activities  
Net cash generated from financing activities
Effect  of  exchange  rate  changes  on  cash  and  cash

2019
RMB

2020
RMB

2021
RMB

2022
RMB

2023

RMB

US$

For the Year Ended December 31,

(in thousands)

 (867,982) 
 212,462  
 152,709  

 433,558  
 (201,901) 
 3,440,481  

 (973,093) 
 (727,206) 
 593,924  

 (1,102,805) 
 458,382  
 42,357  

 (1,304,950) 
 102,515  
 7,572  

 (183,798)
 14,439
 1,066

equivalents and restricted cash

 15,163  

 (106,643) 

 (128,771) 

 389,203  

 84,452  

 11,896

Net (decrease) increase in cash, cash equivalents and

restricted cash

 (487,648) 

 3,565,495  

 (1,235,146) 

 (212,863) 

 (1,110,411) 

 (156,397)

Cash, cash equivalents and restricted cash, beginning

of the year

 1,680,931  

 1,193,283  

 4,758,778  

 3,523,632  

 3,310,769  

 466,311

Cash, cash equivalents and restricted cash, end of the

 1,193,283  

 4,758,778  

 3,523,632  

 3,310,769  

 2,200,358  

 309,914

year

A. Reserved

B. Capitalization and Indebtedness

Not applicable.

C. Reasons for the Offer and Use of Proceeds

Not applicable.

D. Risk Factors

Summary of Risk Factors

An investment in our ADSs or ordinary shares involves significant risks. Below is a summary of material risks we face, organized

under relevant headings. These risks are discussed more fully in “Item 3. Key Information—D. Risk Factors.”

Risks Related to Our Financial Position and Need for Additional Capital

● We  have  a  limited  operating  history,  which  may  make  it  difficult  to  evaluate  our  current  business  and  predict  our  future

performance.

● We have incurred net losses in the past and we may not be able to maintain profitability in the future.

● We  recorded  net  cash  outflow  from  operating  activities  in  the  past.  We  may  need  to  obtain  additional  financing  to  fund  our
operations. If we are unable to obtain such financing, we may be unable to complete the development and commercialization of
our major drug candidates.

Risks Related to Clinical Development of Our Drug Candidates

● Clinical development involves a lengthy and expensive process with an uncertain outcome, and results of earlier studies and

trials may not be predictive of future trial results.

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● We depend substantially on the success of our drug candidates, all of which are in pre-clinical or clinical development, and our
ability to identify additional drug candidates. If we are unable to successfully identify new drug candidates, complete clinical
development, obtain regulatory approval and commercialize our drug candidates, or experience significant delays in doing so,
our business will be materially harmed.

● We may not be able to identify, discover or in-license new drug candidates, and may allocate our limited resources to pursue a
particular drug candidate or indication and fail to capitalize on drug candidates or indications that may later prove to be more
profitable, or for which there is a greater likelihood of success.

Risks Related to Obtaining Regulatory Approval for Our Drug Candidates

● All material aspects of the research, development and commercialization of pharmaceutical products are heavily regulated.

● The regulatory approval processes of the FDA and other comparable regulatory authorities are time-consuming and may evolve
over  time,  and  if  we  are  ultimately  unable  to  obtain  regulatory  approval  for  our  drug  candidates,  our  business  will  be
substantially harmed.

● The failure to obtain a patent term extension and data exclusivity for any product candidates we may develop could increase the

risk of generic competition with our products.

Risks Related to Commercialization of Our Drug Candidates

● Our drug candidates may fail to achieve the degree of market acceptance by physicians, patients, third-party payors and others

in the medical community necessary for commercial success.

● We face intense competition and rapid technological change and the possibility that our competitors may develop therapies that
are similar, more advanced, or more effective than ours, which may adversely affect our financial condition and our ability to
successfully commercialize our drug candidates.

● The  manufacture  of  biopharmaceutical  products  is  a  complex  process  which  requires  significant  expertise  and  capital
investment,  and  if  we  encounter  problems  in  sourcing  manufacturing  capabilities  or  manufacturing  our  future  products,  our
business could suffer.

Risks Related to Our Reliance on Third Parties

● As we rely on third parties to conduct our pre-clinical studies and clinical trials, if we lose our relationships with these third
parties or if they do not successfully carry out their contractual duties or meet expected deadlines, we may not be able to obtain
regulatory approval for or commercialize our drug candidates and our business could be substantially harmed.

● We plan to continue to rely on third parties to manufacture our drug candidate supplies, and we intend to rely on third parties
for the manufacturing process of our drug candidates, if approved. Our business could be harmed if those third parties fail to
provide us with sufficient quantities of product or fail to do so at acceptable quality levels or prices.

Risks Related to Our Intellectual Property

● If we are unable to obtain and maintain patent and other intellectual property protection for our drug candidates, or if the scope
of such intellectual property rights obtained is not sufficiently broad, third parties could develop and commercialize products
and technologies similar or identical to ours and compete directly against us, and our ability to successfully commercialize any
product or technology may be adversely affected.

● We enjoy only limited geographical protection with respect to certain patents and may not be able to protect our intellectual

property rights throughout the world.

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Table of Contents

● Obtaining  and  maintaining  our  patent  protection  depends  on  compliance  with  various  procedural,  document  submission,  fee
payment,  and  other  requirements  imposed  by  governmental  patent  agencies,  and  our  patent  protection  could  be  reduced  or
eliminated for non-compliance with these requirements.

Risks Related to Our Industry, Business and Operations

● We face significant risks related to the transition of our business focus to the U.S. market and our business and prospects may

be materially and adversely affected.

● Our future success depends on our ability to attract, retain and motivate senior management and qualified scientific employees.

● We  will  need  to  increase  the  size  and  capabilities  of  our  organization,  and  we  may  experience  difficulties  in  managing  our

development.

● The  data  and  information  that  we  gather  in  our  research  and  development  process  could  be  inaccurate  or  incomplete,  which

could harm our business, reputation, financial condition and results of operations.

Risks Related to Doing Business in China

Although  we  divested  the  Greater  China  assets  and  business  operations,  to  the  extent  that  we  conduct  our  remaining  business

operations in China, we are subject to risks associated with having operations in China.

● We  are  subject  to  China’s  data  privacy  and  cybersecurity  laws,  regulations  and  guidelines  and  any  other  future  laws  and

regulations, which may entail significant compliance costs and adversely affect our business.

● Uncertainties with respect to the PRC legal system could materially and adversely affect us.

● The ability of U.S. authorities to bring actions for violations of U.S. securities law and regulations against us or our directors
may be limited. Therefore, you may not be afforded the same protection as provided to investors in U.S. domestic companies.

General Risks Related to Our ADSs

● The trading price of our ADSs may be volatile, which could result in substantial losses to you.

● We may face an increased risk of securities class action litigation.

Risks Related to Our Financial Position and Need for Additional Capital

We have a limited operating history, which may make it difficult to evaluate our current business and predict our future performance.

We  are  a  clinical  stage  biopharmaceutical  company  with  a  limited  operating  history.  Our  operations  to  date  have  focused  on
organizing and staffing our operations, business planning, raising capital, establishing our intellectual property portfolio and conducting
pre-clinical  and  clinical  trials  of  our  drug  candidates.  We  have  not  yet  demonstrated  an  ability  to  successfully  manufacture,  obtain
marketing  approvals  for  or  commercialize  our  drug  candidates.  We  have  no  products  approved  for  commercial  sale  and  have  not
generated any revenue from the sales of our commercial products. Consequently, any predictions about our future success or viability
may not be as accurate as they could be if we had a longer operating history.

We are focused on the development and potential commercialization of highly differentiated immunotherapies for the treatment of
cancer. Our limited operating history, particularly in light of the rapidly evolving drug research and development industry in which we
operate and the changing regulatory and market environments we encounter, may make it difficult to evaluate our prospects for future
performance. As a result, any assessment of our future performance or viability is subject to significant uncertainty. We will encounter
risks and difficulties frequently experienced by early-stage companies in rapidly evolving fields as we seek to transition to a company
capable of supporting commercial activities. If we do not address these risks and difficulties successfully, our business will suffer.

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We have incurred net losses in the past and we may not be able to maintain profitability in the future.

Investment  in  the  development  of  biopharmaceutical  products  is  highly  speculative  as  it  entails  substantial  upfront  capital
expenditures and significant risks that a drug candidate may fail to demonstrate efficacy and/or safety to gain regulatory or marketing
approvals  or  become  commercially  viable.  To  date,  we  have  financed  our  activities  primarily  through  public  and  private  placements.
Additionally,  we  have  generated  revenue  from  licensing  and  collaboration  deals,  and  have  started  to  generate  revenue  from  supply  of
investigational products since 2021. We have incurred significant research and development expenses and other expenses related to our
ongoing operations. As a result, we incurred net losses of RMB2,331.5 million in 2021, RMB2,507.3 million in 2022 and RMB1,465.7
million (US$206.4 million) in 2023. Substantially all of our net losses have resulted from costs incurred in connection with our research
and development programs and from general and administrative costs associated with our operations.

We  cannot  assure  you  that  we  will  be  able  to  generate  net  profits  in  the  future.  Our  ability  to  achieve  and  maintain  profitability
depends  in  large  part  on  our  ability  to  out-license  some  of  our  commercialization  rights  and  execute  our  product  commercialization
strategies as our business further develops. Accordingly, we intend to continue to invest for the foreseeable future in certain activities
relating to our development, including, but not limited to, the following:

● conducting clinical trials of our drug candidates;

● manufacturing clinical trial materials through contract manufacturing organizations;

● seeking regulatory approvals for our drug candidates;

● commercializing any of our drug candidates for which we have obtained marketing approval;

● hiring additional clinical, operational, financial, quality control and scientific personnel;

● establishing a sales, marketing and commercialization team for any future products that have obtained regulatory approval;

● seeking to identify additional drug candidates;

● obtaining, maintaining, developing and protecting our intellectual property portfolio;

● enforcing and defending any intellectual property-related claims; and

● acquiring or in-licensing other drug candidates, intellectual property and technologies.

Typically,  it  takes  many  years  to  develop  one  new  drug  from  the  time  it  is  discovered  to  when  it  becomes  available  for  treating
patients. During the process, we may encounter unforeseen expenses, difficulties, complications, delays and other unknown factors that
may adversely affect our business. The size of our future net losses will depend partially on the rate of the future growth of our expenses,
our ability to generate revenues and the timing and amount of milestone payments and other payments that we receive from or pay to
third parties. If any of our drug candidates fails during clinical trials or does not gain regulatory approval, or, even if approved, fails to
achieve market acceptance, our business may not become profitable. Even if we achieve profitability in the future, we may not be able to
sustain profitability in subsequent periods thereafter. Our prior losses and expected future losses have had, and will continue to have, an
adverse effect on our working capital and shareholders’ equity.

We  recorded  net  cash  outflow  from  operating  activities  in  the  past.  We  may  need  to  obtain  additional  financing  to  fund  our
operations. If we are unable to obtain such financing, we may be unable to complete the development and commercialization of our
major drug candidates.

Since  our  inception,  our  operations  have  consumed  substantial  amounts  of  cash.  We  had  raised  over  US$400  million  in  pre-IPO
financing. In the past, we received total net proceeds of approximately US$105.3 million, US$397.2 million and US$105.6 million from
our initial public offering, subsequent private placement, and warrants issued and subsequently exercised in connection with the private
placement, respectively. We spent RMB973.1 million, RMB1,102.8 million and RMB1,305.0 million (US$183.8 million) in net cash to
finance our operations in 2021, 2022 and 2023, respectively.

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Despite the divestiture of the Greater China assets and business operations, we expect to continue to incur significant expenses in
connection  with  our  ongoing  activities,  particularly  as  we  advance  the  clinical  development  of  our  clinical-stage  drug  candidates,  and
initiate additional clinical trials of, and seek regulatory approval for, these and other future drug candidates.

In  addition,  if  we  obtain  regulatory  approvals  for  any  of  our  drug  candidates,  we  expect  to  incur  significant  commercialization
expenses relating to product manufacturing, marketing, sales and distribution and post-approval commitments to continue monitoring the
efficacy and safety data of our future products on the market. In particular, costs that may be required for the manufacture of any drug
candidate that has received regulatory approval may be substantial. We have incurred and may continue to incur expenses as we create
additional  infrastructure  to  support  our  operations  as  a  public  company.  Accordingly,  we  will  need  to  obtain  substantial  additional
funding  in  connection  with  our  continuing  operations  through  public  or  private  equity  offerings,  debt  financing,  collaborations  or
licensing arrangements or other sources. If we are unable to raise capital when needed or on acceptable terms, we could be forced to
delay, limit, reduce or terminate our research and development programs or any future commercialization efforts.

There have been uncertainties and interruptions to global economy and significant volatility across the financial markets, which had
a cooling effect on the financing and investing activities in general. We believe that our current cash and cash equivalents, together with
our cash generated from operating activities, financing activities, our initial public offering and private placement(s), will be sufficient to
meet our present anticipated working capital requirements and capital expenditures. However, if the volatility in the financial markets
continues, our financing activities in future to raise additional capital may be materially and adversely affected, which may in turn have
an adverse effect on our ability to meet our working capital requirement and our liquidity.

Raising additional capital may cause dilution to the interests to the holders of our ADSs and our shareholders, restrict our operations
or require us to relinquish rights to our technologies or drug candidates.

We  may  seek  additional  funding  through  a  combination  of  asset  sales,  equity  offerings,  debt  financings,  collaborations,  licensing
arrangements,  strategic  alliances  or  partnerships  and  government  grants  or  subsidies.  To  the  extent  that  we  raise  capital  through  asset
sales, we can provide no assurance as to the timing of any asset sales or the proceeds that could be realized by us from any such asset
sale.

To the extent that we raise additional capital through the sale of equity or convertible debt securities, your ownership interest will be
diluted,  and  the  terms  may  include  liquidation  or  other  preferences  that  adversely  affect  your  rights  as  a  holder  of  our  ADSs.  The
incurrence of additional indebtedness or the issuance of certain equity securities could give rise to increased fixed payment obligations
and also result in certain additional restrictive covenants, such as limitations on our ability to incur additional debt or issue additional
equity,  limitations  on  our  ability  to  acquire  or  license  intellectual  property  rights  and  other  operating  restrictions  that  could  adversely
impact our ability to conduct our business. In addition, the issuance of additional equity securities, or the possibility of such issuance,
may cause the market price of our ADSs to decline.

In  the  event  we  enter  into  collaborations  or  licensing  arrangements  in  order  to  raise  capital,  we  may  be  required  to  accept
unfavorable  terms,  including  relinquishing  or  licensing  to  a  third  party  our  rights  to  technologies  or  drug  candidates  on  unfavorable
terms, which we would have otherwise sought to develop or commercialize on our own or reserve for future potential arrangements when
we are more likely to achieve more favorable terms.

The approval of and filing with PRC government authorities may be required in connection with our offshore offerings under PRC
law, and, if required, we cannot predict whether or for how long we will be able to obtain such approval or complete such filing.

The Regulations on Mergers and Acquisitions of Domestic Enterprises by Foreign Investors adopted by six PRC regulatory agencies
in  2006  and  amended  in  2009,  require  an  overseas  special  purpose  vehicle  formed  for  listing  purposes  through  acquisitions  of  PRC
domestic companies and controlled by PRC persons or entities to obtain the approval of the CSRC prior to the listing and trading of such
special purpose vehicle’s securities on an overseas stock exchange. The interpretation and application of the regulations remain unclear,
and our offshore offerings may ultimately require approval of the CSRC. If the CSRC approval is required, it is uncertain whether we can
or how long it will take us to obtain the approval and, even if we obtain such CSRC approval, the approval could be rescinded. Any
failure to obtain or delay in obtaining the CSRC approval for any of our offshore offerings, or a rescission of such approval if obtained
by us, may subject us to sanctions imposed by the CSRC or other PRC regulatory authorities, which may include fines and penalties on
our operations in China, restrictions or limitations on our ability to pay dividends outside of China, and other forms of sanctions that may
materially and adversely affect our business, financial condition, and results of operations.

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On February 17, 2023, the CSRC promulgated the Trial Administrative Measures of the Overseas Securities Offering and Listing by
Domestic Companies along with five relevant guidelines, which came into effect on March 31, 2023. The trial administrative measures
comprehensively  improve  and  reform  the  existing  regulatory  regime  for  overseas  offering  and  listing  of  PRC  domestic  companies’
securities and regulate both direct and indirect overseas offering and listing of PRC domestic companies’ securities by adopting a filing-
based  regulatory  regime.  Pursuant  to  these  trial  administrative  measures,  an  overseas  offering  and  listing  by  a  domestic  company,
whether  directly  or  indirectly,  must  be  filed  with  the  CSRC.  Specifically,  the  examination  and  determination  of  an  indirect  overseas
offering  and  listing  shall  be  conducted  on  a  substance-over-form  basis,  and  an  offering  and  listing  will  be  considered  as  an  indirect
overseas offering and listing by a domestic company if the issuer meets the following both conditions: (i) the operating income, gross
profit, total assets or net assets of such domestic company in the most recent fiscal year was more than 50% of the relevant line items in
the issuer’s audited consolidated financial statements for that year; and (ii) the main part of operating activities is conducted in the PRC
or  the  main  place  of  business  is  located  in  the  PRC,  or  the  senior  management  personnel  responsible  for  business  operations  and
management are mostly PRC citizens or are ordinarily resident in the PRC. Following the completion of the divestiture of the Greater
China assets and business operations in April 2024, we conduct a majority of our business outside of China and only conduct a small
portion of our research and development activities in China as of the date of this annual report. However, the majority of our results of
operations for the year ended December 31, 2023 were related to our historical business operations in China. Given the circumstances,
uncertainties remain as to whether the trial administrative measures will apply to us to the extent we propose to conduct any offering or
listing outside China in 2024. As advised by our PRC legal counsel, JunHe LLP, there is a possibility that we will not be subject to the
CSRC filing requirements in connection with our proposed offering and listing outside China. However, the CSRC and other authorities
may take a view that is contrary to the opinion of our PRC legal counsel, and there is no assurance that we may not be required to file the
relevant documents with the CSRC in connection with our proposed offerings and listings outside mainland China in the future.

Following the issuance of the trial administrative measures, the CSRC subsequently issued several rules and regulations on overseas
offering and listing, providing further guidance on the filing requirements in connection with overseas securities issuance and listing by
domestic  companies.  We  cannot  assure  you  that  any  new  rules  or  regulations  promulgated  in  the  future  will  not  impose  additional
requirements  on  us.  If  it  is  determined  in  the  future  that  approval  or  filing  from  any  regulatory  authorities  or  other  procedures  are
required for our offshore offerings, it is uncertain whether we can or how long it will take us to obtain such approval or complete such
filing procedures and any such approval or filing could be rescinded or rejected. Any failure to obtain or delay in obtaining such approval
or  completing  such  filing  procedures  for  our  offshore  offerings,  or  a  rescission  of  any  such  approval  or  filing  if  obtained  by  us,  may
subject us to sanctions by the regulatory authorities. These regulatory authorities may impose fines and penalties on our operations in
China, limit our ability to pay dividends outside of China, limit our operating privileges in China, delay or restrict the repatriation of the
proceeds from our offshore offerings into China or take other actions that could materially and adversely affect our business, financial
condition, results of operations, and prospects, as well as the trading price of our listed securities. These regulatory authorities also may
take actions requiring us, or making it advisable for us, to halt our offshore offerings before settlement and delivery of the shares offered.
Consequently, if investors engage in market trading or other activities in anticipation of and prior to settlement and delivery, they do so at
the risk that settlement and delivery may not occur. In addition, if any regulatory authorities later promulgate new rules or explanations
requiring that we obtain their approvals or accomplish the required filing or other regulatory procedures for our prior offshore offerings,
we may be unable to obtain a waiver of such approval requirements, if and when procedures are established to obtain such a waiver. Any
uncertainties  or  negative  publicity  regarding  such  approval  requirement  could  materially  and  adversely  affect  our  business,  prospects,
financial condition, reputation, and the trading price of our listed securities.

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We have granted, and may continue to grant, options and other types of awards under our share incentive plans, which may result in
increased share-based compensation expenses.

We have adopted the Second Amended and Restated 2017 Employee Stock Option Plan, or the 2017 Plan, the Second Amended and
Restated 2018 Employee Stock Option Plan, or the 2018 Plan, the 2019 Share Incentive Plan, or the 2019 Plan, the 2020 Share Incentive
Plan, or the 2020 Plan, the 2021 Share Incentive Plan, or the 2021 Plan, and the 2022 Share Incentive Plan, or the 2022 Plan, or for the
purpose of granting share-based compensation awards to employees, directors and consultants to incentivize their performance and align
their interests with ours. We recognize expenses in our consolidated financial statements in accordance with U.S. GAAP. As of April 15,
2024,  the  awards  that  had  been  granted  to  our  directors,  officers,  employees  and  consultants  and  remained  outstanding  included  (i)
options to purchase an aggregate of 1,108,636 ordinary shares, 598,388 ordinary shares, 0 ordinary shares, 2,054,670 ordinary shares,
2,175,326 ordinary shares, and 2,695,271 ordinary shares under the 2017 Plan, the 2018 Plan, the 2019 Plan, the 2020 Plan, the 2021
Plan and the 2022 Plan, respectively, excluding options that were forfeited, cancelled, or exercised after the grant date; and (ii) restricted
share units to receive an aggregate of 23,580 ordinary shares under the 2020 Plan, an aggregate of 390,655 ordinary shares under the
2021  Plan  and  an  aggregate  of  446,262  ordinary  shares  under  the  2022  Plan,  excluding  restricted  share  units  that  were  forfeited,
cancelled,  or  vested  after  the  grant  date.  See  “Item  6.  Directors,  Senior  Management  and  Employees—B.  Compensation—Share
Incentive Plans.”

We believe the granting of share-based compensation is of significant importance to our ability to attract and retain key personnel
and employees, and we will continue to grant share-based compensation to employees in the future. As a result, our expenses associated
with share-based compensation may increase, which may have an adverse effect on our results of operations. We may re-evaluate the
vesting schedules, lock-up period, exercise price or other key terms applicable to the grants under our currently effective share incentive
plans from time to time. If we choose to do so, we may experience substantial change in our share-based compensation charges.

Risks Related to Clinical Development of Our Drug Candidates

Clinical development involves a lengthy and expensive process with an uncertain outcome, and results of earlier studies and trials
may not be predictive of future trial results.

Clinical testing is expensive and can take many years to complete, and its outcome is inherently uncertain. While our exclusive focus
is to develop drug candidates with the potential to become novel or highly differentiated drugs globally, we cannot guarantee that we are
able to achieve this for any of our drug candidates. Failure can occur at any time during the clinical development process. The results of
pre-clinical studies and early clinical trials of our drug candidates may not be predictive of the results of later-stage clinical trials. Drug
candidates  during  later  stages  of  clinical  trials  may  fail  to  show  the  desired  results  in  safety  and  efficacy  despite  having  progressed
through  pre-clinical  studies  and  initial  clinical  trials  and  despite  the  level  of  scientific  rigor  in  the  study,  design  and  adequacy  of
execution. For example, in July 2022, due to an unexpectedly high incidence of fatal bleeding, MacroGenics terminated a phase 2 study
of  enoblituzumab  as  a  combination  therapy  with  PD-1  antibody  or  PD-1/LAG3  bispecific  antibody  in  patients  with  head  and  neck
cancers. As a result of such incident, we exercised our right to terminate the collaboration agreement with MacroGenics by serving a
termination  notice  on  August  29,  2022,  and  the  termination  came  into  effect  in  February  2023.  In  addition,  there  can  be  significant
variability in safety and/or efficacy results among different trials of the same drug candidate due to numerous factors, including, but not
limited  to,  differences  in  individual  patient  conditions,  including  genetic  differences,  and  other  compounding  factors,  such  as  other
medications or pre-existing medical conditions.

In the case of any trials we conduct, results may differ from earlier trials due to the larger number of clinical trial sites and additional
countries  and  languages  involved  in  such  trials.  A  number  of  companies  in  the  biopharmaceutical  industry  have  suffered  significant
setbacks in advanced clinical trials due to a lack of efficacy or adverse safety profiles, notwithstanding promising results in earlier trials.
We cannot guarantee that our future clinical trial results will be favorable based on currently available clinical and pre-clinical data.

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We  depend  substantially  on  the  success  of  our  drug  candidates,  all  of  which  are  in  pre-clinical  or  clinical  development,  and  our
ability  to  identify  additional  drug  candidates.  If  we  are  unable  to  successfully  identify  new  drug  candidates,  complete  clinical
development, obtain regulatory approval and commercialize our drug candidates, or experience significant delays in doing so, our
business will be materially harmed.

Our business will depend on the successful development, regulatory approval and commercialization of our drug candidates for the
treatment  of  patients  with  our  targeted  indications,  all  of  which  are  still  in  pre-clinical  or  clinical  development,  and  other  new  drug
candidates that we may identify and develop. As of the date of this annual report, we have obtained IND approvals from the FDA for
three  of  our  drug  candidates,  lemzoparlimab,  uliledlimab,  and  givastomig.  However,  we  cannot  guarantee  that  we  are  able  to  obtain
regulatory approvals for our other existing drug candidates in a timely manner, or at all. In addition, none of our drug candidates has been
approved for marketing in any jurisdiction. Each of our drug candidates will require additional pre-clinical and/or clinical development,
regulatory approvals in multiple jurisdictions, development of manufacturing supply and capacity, substantial investment and significant
marketing efforts before we generate any revenue from product sales.

The success of our drug candidates will depend on several factors, including, but not limited to, the successful completion of pre-
clinical and/or clinical trials or studies, receipt of regulatory approvals from applicable regulatory authorities for planned clinical trials,
future  clinical  trials  or  drug  registrations,  successful  manufacturing  and  commercialization  of  our  existing  drug  candidates,  hiring
sufficient  technical  experts  to  oversee  all  development  and  regulatory  activities  and  license  renewal  and  meeting  of  the  safety
requirements.

If we do not achieve one or more of these in a timely manner or at all, we could experience significant delays in our ability to obtain
approval for our drug candidates, which would materially harm our business and we may not be able to generate sufficient revenues and
cash  flows  to  continue  our  operations.  As  a  result,  our  financial  condition,  results  of  operations  and  prospects  will  be  materially  and
adversely harmed.

We  may  not  be  able  to  identify,  discover  or  in-license  new  drug  candidates,  and  may  allocate  our  limited  resources  to  pursue  a
particular  drug  candidate  or  indication  and  fail  to  capitalize  on  drug  candidates  or  indications  that  may  later  prove  to  be  more
profitable, or for which there is a greater likelihood of success.

Although a substantial amount of our effort will focus on the continued clinical testing, potential approval, and commercialization of
our  existing  drug  candidates,  the  success  of  our  business  depends  in  part  upon  our  ability  to  identify,  license,  discover,  develop,  or
commercialize  additional  drug  candidates.  Research  programs  to  identify  new  drug  candidates  require  substantial  technical,  financial,
and  human  resources.  We  may  focus  our  efforts  and  resources  on  potential  programs  or  drug  candidates  that  ultimately  prove  to  be
unsuccessful.  Our  research  programs  or  licensing  efforts  may  fail  to  identify,  discover  or  in-license  new  drug  candidates  for  clinical
development and commercialization for a number of reasons, including, without limitation, the following:

● our research or business development methodology or search criteria and process may be unsuccessful in identifying potential

drug candidates;

● our potential drug candidates may be shown to have harmful side effects or may have other characteristics that may make the

products unmarketable or unlikely to receive marketing approval; and

● it may take greater human and financial resources to identify additional therapeutic opportunities for our drug candidates or to
develop suitable potential drug candidates through internal research programs than we possess, thereby limiting our ability to
diversify and expand our drug portfolio.

Because  we  have  limited  financial  and  managerial  resources,  we  focus  on  research  programs  and  drug  candidates  for  specific
indications. As a result, we may forgo or delay pursuit of opportunities with other drug candidates or for other indications that later may
prove to have greater commercial potential or a greater likelihood of success. Our resource allocation decisions may cause us to fail to
capitalize on viable commercial products or profitable market opportunities.

Accordingly,  there  can  be  no  assurance  that  we  will  ever  be  able  to  identify  additional  therapeutic  opportunities  for  our  drug
candidates or to develop suitable potential drug candidates through internal research programs, which could materially adversely affect
our future growth and prospects.

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If we encounter delays or difficulties enrolling patients in our clinical trials, our clinical development progress could be delayed or
otherwise adversely affected.

We may not be able to initiate or continue clinical trials for our drug candidates if we are unable to locate and enroll a sufficient
number of eligible patients to participate in these trials as required by the FDA, or similar regulatory authorities, or if there are delays in
the  enrollment  of  eligible  patients  as  a  result  of  the  competitive  clinical  enrollment  environment.  The  inability  to  enroll  a  sufficient
number of patients who meet the applicable criteria for our clinical trials would result in significant delays. As of the date of this annual
report, we have initiated clinical trials for uliledlimab and givastomig in the United States.

In  addition,  some  of  our  competitors  have  ongoing  clinical  trials  for  drug  candidates  that  treat  the  same  indications  as  our  drug
candidates, and patients who would otherwise be eligible for our clinical trials may instead enroll in the clinical trials of our competitors’
drug candidates, which may further delay our clinical trial enrollments.

Patient enrollment for our clinical trials may be affected by other factors, including, but not limited to, the following:

● severity of the disease under investigation;

● total size and nature of the patient population;

● design and eligibility criteria for the clinical trial in question;

● perceived risks and benefits of the drug candidate under study;

● our resources to facilitate timely enrollment in clinical trials;

● patient referral practices of physicians;

● availability of competing therapies also undergoing clinical trials;

● our investigators’ or clinical trial sites’ efforts to screen and recruit eligible patients; and

● proximity and availability of clinical trial sites for prospective patients.

Even if we are able to enroll a sufficient number of patients in our clinical trials, delays in patient enrollment may result in increased
costs  or  may  affect  the  timing  or  outcome  of  the  planned  clinical  trials,  which  could  prevent  completion  of  these  trials  and  adversely
affect our ability to advance the development of our drug candidates.

If clinical trials of our drug candidates fail to demonstrate safety and efficacy to the satisfaction of regulatory authorities or do not
otherwise  produce  positive  results,  we  may  incur  additional  costs  or  experience  delays  in  completing,  or  ultimately  be  unable  to
complete, the development and commercialization of our drug candidates.

Before obtaining regulatory approval for the sale of our drug candidates, we must conduct extensive clinical trials to demonstrate the
safety and efficacy of our drug candidates in humans. We may experience numerous unexpected events during, or as a result of, clinical
trials  that  could  delay  or  prevent  our  ability  to  receive  regulatory  approval  or  commercialize  our  drug  candidates,  including,  without
limitation:

● regulators, institutional review boards, or ethics committees may not authorize us or our investigators to commence a clinical

trial or conduct a clinical trial at a prospective trial site;

● our inability to reach agreements on acceptable terms with prospective CROs and trial sites, the terms of which can be subject

to extensive negotiation and may vary significantly among different CROs and trial sites;

● manufacturing issues, including problems with manufacturing, supply quality, compliance with good manufacturing practice or

obtaining sufficient quantities of a drug candidate from third parties for use in a clinical trial;

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● our partners identify safety concerns in the clinical assets that we licensed, which lead to the termination of the collaboration

and development of the underlying clinical assets with our partners;

● clinical trials of our drug candidates may produce negative or inconclusive results, and we may decide to conduct additional

clinical trials or abandon drug development programs, or regulators may require us to do so;

● the number of patients required for clinical trials of our drug candidates may be larger than we anticipate, enrollment may be

insufficient or slower than we anticipate or patients may drop out at a higher rate than we anticipate;

● our  third-party  contractors,  including  clinical  investigators,  may  fail  to  comply  with  regulatory  requirements  or  meet  their

contractual obligations to us in a timely manner, or at all;

● we might have to suspend or terminate clinical trials of our drug candidates for various reasons, including a finding of a lack of
clinical  response  or  other  unexpected  characteristics  or  a  finding  that  participants  are  being  exposed  to  unacceptable  health
risks;

● regulators,  institutional  review  boards  or  ethics  committees  may  require  that  we  or  our  investigators  suspend  or  terminate
clinical  research  or  not  rely  on  the  results  of  clinical  research  for  various  reasons,  including  non-compliance  with  regulatory
requirements;

● the cost of clinical trials of our drug candidates may be greater than we anticipate; and

● the supply or quality of our drug candidates, companion diagnostics or other materials necessary to conduct clinical trials of our

drug candidates may be insufficient or inadequate.

If we fail to timely and effectively address the above challenges, we may (i) be delayed in obtaining regulatory approval for our drug
candidates; (ii) obtain approval for indications that are not as broad as intended; (iii) not obtain regulatory approval at all; (iv) have the
drug removed from the market after obtaining regulatory approval; (v) be subject to additional post-marketing testing requirements; (vi)
be subject to restrictions on how the drug is distributed or used; or (vii) be unable to obtain reimbursement for use of the drug.

Significant clinical trial delays may also increase our development costs and could shorten any periods during which we have the
exclusive right to commercialize our drug candidates or allow our competitors to bring drugs to market before we do. This could impair
our ability to commercialize our drug candidates and may harm our business and results of operations.

Risks Related to Obtaining Regulatory Approval for Our Drug Candidates

All material aspects of the research, development and commercialization of pharmaceutical products are heavily regulated.

All  jurisdictions  in  which  we  intend  to  conduct  our  pharmaceutical-industry  activities  regulate  these  activities  in  great  depth  and
detail. We intend to focus our activities in the major markets outside of Greater China, including the United States. These jurisdictions
strictly regulate the pharmaceutical industry, and in doing so they employ broadly similar regulatory strategies, including regulation of
product development and approval, manufacturing, and marketing, sales and distribution of products. However, there are differences in
the  regulatory  regimes  that  make  for  a  more  complex  and  costly  regulatory  compliance  burden  for  a  company  like  us  that  plans  to
operate in these regions.

The  process  of  obtaining  regulatory  approvals  and  compliance  with  appropriate  laws  and  regulations  requires  the  expenditure  of
substantial time and financial resources. Failure to comply with the applicable requirements at any time during the product development
process and approval process, or after approval, may subject an applicant to administrative or judicial sanctions. These sanctions could
include  refusal  to  approve  pending  applications,  withdrawal  of  an  approval,  license  revocation,  clinical  hold,  voluntary  or  mandatory
product  recalls,  product  seizures;  total  or  partial  suspension  of  production  or  distribution,  injunctions,  fines,  refusals  of  government
contracts, providing restitution, undergoing disgorgement, or other civil or criminal penalties. Failure to comply with these regulations
could have a material adverse effect on our business.

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The regulatory approval processes of the FDA and other comparable regulatory authorities are time-consuming and may evolve over
time,  and  if  we  are  ultimately  unable  to  obtain  regulatory  approval  for  our  drug  candidates,  our  business  will  be  substantially
harmed.

The time required to obtain the approval of the FDA and other comparable regulatory authorities is inherently uncertain and depends
on  numerous  factors,  including  the  substantial  discretion  of  the  regulatory  authorities.  Generally,  such  approvals  take  many  years  to
obtain  following  the  commencement  of  pre-clinical  studies  and  clinical  trials,  although  they  are  typically  provided  within  12  to  18
months after clinical trials are completed. In addition, approval policies, regulations or the type and amount of clinical data necessary to
gain approval may change during the course of a drug candidate’s clinical development and may vary among jurisdictions. As of the date
of this annual report, we have obtained IND approvals from the FDA for three of our drug candidates, lemzoparlimab, uliledlimab and
givastomig. However, we cannot guarantee that we are able to obtain regulatory approvals for our other existing drug candidates or any
drug candidates we may discover, in-license or acquire and seek to develop in the future.

Our drug candidates could fail to receive the regulatory approval of the FDA or a comparable regulatory authority for many reasons,

including, without limitation:

● disagreement with the design or implementation of our clinical trials;

● failure to demonstrate that a drug candidate is safe and effective and potent for its proposed indication;

● failure of our clinical trial results to meet the level of statistical significance required for approval;

● failure of our clinical trial process to pass good clinical practice inspections;

● failure to demonstrate that a drug candidate’s clinical and other benefits outweigh its safety risks;

● disagreement with our interpretation of data from pre-clinical studies or clinical trials;

● insufficient  data  collected  from  the  clinical  trials  of  our  drug  candidates  to  support  the  submission  and  filing  of  a  new  drug

application, or other submissions or to obtain regulatory approval;

● failure of our drug candidates to pass current good manufacturing practice, inspections during the regulatory review process or

across the production cycle of our drug;

● failure of our clinical sites to pass audits carried out by the FDA or comparable regulatory authorities, resulting in a potential

invalidation of our research data;

● findings by the FDA or comparable regulatory authorities of deficiencies related to our manufacturing processes or the facilities

of third-party manufacturers with whom we contract for clinical and commercial supplies;

● changes in approval policies or regulations that render our pre-clinical and clinical data insufficient for approval; and

● failure of our clinical trial process to keep up with any scientific or technological advancements required by approval policies or

regulations.

The FDA or a comparable regulatory authority may require more information, including additional pre-clinical or clinical data, to
support approval, which may delay or prevent approval and our commercialization plans. Even if we were to obtain approval, regulatory
authorities may approve any of our drug candidates for fewer or more limited indications than we request, grant approval contingent on
the  performance  of  costly  post-marketing  clinical  trials,  or  approve  a  drug  candidate  with  an  indication  that  is  not  desirable  for  the
successful commercialization of that drug candidate. Any of the foregoing scenarios could materially harm the commercial prospects of
our drug candidates.

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The failure to obtain a patent term extension and data exclusivity for any product candidates we may develop could increase the risk
of generic competition with our products.

In  the  United  States,  the  Federal  Food,  Drug  and  Cosmetic  Act  provides  the  opportunity  for  patent-term  restoration,  meaning  a
patent term extension of up to five years to reflect patent term lost during clinical trials and the FDA regulatory review process. A patent
term extension cannot extend the remaining term of a patent beyond a total of 14 years from the date of drug approval, only one patent
may  be  extended  and  only  those  claims  covering  the  approved  drug,  a  method  for  using  it,  or  a  method  for  manufacturing  it  may  be
extended. Depending upon the timing, duration and specifics of any FDA marketing approval process for any drug candidates we may
develop, one or more of our U.S. patents, if issued, may be eligible for limited patent term extension. However, we may not be granted an
extension because of, for example, failing to exercise due diligence during the testing phase or regulatory review process, failing to apply
within applicable deadlines, failing to apply prior to expiration of relevant patents, or otherwise failing to satisfy applicable requirements.
Furthermore, the applicable time period or the scope of patent protection afforded could be less than we request.

In  addition,  the  Biologics  Price  Competition  and  Innovation  Act  of  2009  created  an  abbreviated  pathway  for  the  approval  of
biosimilar and interchangeable biologic products. Under this act, an application for a highly similar or “biosimilar” product may not be
submitted to the FDA until four years following the date that the original branded product was first approved by the FDA. In addition, an
application for a biosimilar product cannot be approved by the FDA until 12 years after the original branded product was approved under
a biologics license application, or a BLA. The law is complex and is still being interpreted and implemented by the FDA. As a result, its
ultimate impact, implementation, and meaning are subject to uncertainty.

In  other  jurisdictions  where  we  seek  patents  protection  for  our  product  candidates,  patent  term  compensation  and  patent  linkage
system  may  be  available  to  us.  However,  there  is  no  assurance  that  we  may  be  granted  a  patent  term  extension  as  we  request  or  our
pending or future patent applications may qualify for patent linkage. If we are unable to obtain patent term extension or the term of any
such extension is less than we request, or our pending or future patent applications do not qualify for patent linkage, our competitors may
obtain approval of competing products following our patent expiration, and our business, financial condition, results of operations, and
prospects could be materially harmed.

Our  drug  candidates  may  cause  undesirable  adverse  events  or  have  other  properties  that  could  delay  or  prevent  their  regulatory
approval,  limit  the  commercial  profile  of  an  approved  label,  or  result  in  significant  negative  consequences  following  regulatory
approval.

Undesirable adverse events caused by our drug candidates could cause us or regulatory authorities to interrupt, delay or halt clinical
trials  and  may  result  in  a  more  restrictive  label,  a  delay  or  denial  of  regulatory  approval  by  the  FDA  or  other  comparable  regulatory
authorities, or a significant change in our clinical protocol or even our development plan. In particular, as is the case with drugs treating
cancers  and  autoimmune  diseases,  it  is  likely  that  there  may  be  side  effects,  such  as  nausea,  fatigue  and  infusion-related  reactions,
associated with the use of certain of our drug candidates. Results of our trials could reveal a high and unacceptable severity or prevalence
of  certain  adverse  events.  In  such  an  event,  our  trials  could  be  suspended  or  terminated  and  the  FDA  or  other  comparable  regulatory
authorities could order us to cease further development of, or deny approval of, our drug candidates for any or all targeted indications.
Adverse events related to our drug candidates may affect patient recruitment or the ability of enrolled subjects to complete the trial, and
could result in potential liability claims. Any of these occurrences may significantly harm our reputation, business, financial condition
and prospects.

Additionally,  if  we  or  others  identify  undesirable  side  effects  caused  by  those  of  our  existing  drug  candidates  that  have  received
regulatory  approval,  or  our  other  drug  candidates  after  having  received  regulatory  approval,  this  may  lead  to  potentially  significant
negative consequences which include, but are not limited to, the following:

● we may suspend marketing of the drug candidate;

● regulatory authorities may withdraw their approvals of or revoke the licenses for the drug candidate;

● regulatory authorities may require additional warnings on the label;

● the FDA may require the establishment of a risk evaluation and mitigation strategy or a comparable regulatory authority may
require the establishment of a similar strategy that may, for instance, restrict distribution of our drugs and impose burdensome
implementation requirements on us;

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● we may be required to conduct specific post-marketing studies;

● we could be subjected to litigation proceedings and held liable for harm caused to subjects or patients; and

● our reputation may suffer.

Any  of  these  events  could  prevent  us  from  achieving  or  maintaining  market  acceptance  of  any  particular  drug  candidate  that  is

approved and could significantly harm our business, results of operations and prospects.

Further,  combination  therapy,  such  as  using  our  wholly-owned  drug  candidates  as  well  as  third-party  agents,  may  involve  unique
adverse events that could be exacerbated compared with adverse events from monotherapies. Results of our trials could reveal a high and
unacceptable severity or prevalence of adverse events. These types of adverse events could be caused by our drug candidates and could
cause us or regulatory authorities to interrupt, delay or halt clinical trials and may result in a more restrictive indication or the delay or
denial of regulatory approval by the FDA or other comparable regulatory authority.

Even if we receive regulatory approval for our drug candidates, we will be subject to ongoing regulatory obligations and continued
regulatory review, which may result in significant additional expenses and we may be subject to penalties if we fail to comply with
regulatory requirements or experience unanticipated problems with our drug candidates.

If  the  FDA  or  a  comparable  regulatory  authority  approves  any  of  our  drug  candidates,  the  manufacturing  processes,  labeling,
packaging,  distribution,  adverse  event  reporting,  storage,  advertising,  promotion  and  recordkeeping  for  the  drug  will  be  subject  to
extensive and ongoing regulatory requirements on pharmacovigilance. These requirements include submissions of safety and other post-
marketing information and reports, registration, random quality control testing, adherence to any chemistry, manufacturing and controls,
variations,  continued  compliance  with  current  good  manufacturing  practice,  and  good  clinical  practices  and  potential  post-approval
studies for the purposes of license renewal.

Any regulatory approvals that we receive for our drug candidates may also be subject to limitations on the approved indicated uses
for  which  the  drug  may  be  marketed  or  to  the  conditions  of  approval,  or  contain  requirements  for  potentially  costly  post-marketing
studies, including Phase 4 studies for the surveillance and monitoring of the safety and efficacy of the drug.

In addition, once a drug is approved by the FDA or a comparable regulatory authority for marketing, it is possible that there could be
a  subsequent  discovery  of  previously  unknown  problems  with  the  drug,  including  problems  with  third-party  manufacturers  or
manufacturing  processes,  or  failure  to  comply  with  regulatory  requirements.  If  any  of  the  foregoing  occurs  with  respect  to  our  drug
products, it may result in, among other things:

● restrictions on the marketing or manufacturing of the drug, withdrawal of the drug from the market, or voluntary or mandatory

drug recalls;

● fines, warning letters or holds on our clinical trials;

● refusal  by  the  FDA  or  comparable  regulatory  authorities  to  approve  pending  applications  or  supplements  to  approved

applications filed by us, or suspension or revocation of drug license approvals;

● refusal by the FDA or comparable regulatory authorities to accept any of our other IND approvals, new drug applications or

biologics license applications;

● drug seizure or detention, or refusal to permit the import or export of drugs; and

● injunctions or the imposition of civil, administrative or criminal penalties.

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Any  government  investigation  of  alleged  violations  of  law  could  require  us  to  expend  significant  time  and  resources  and  could
generate negative publicity. Moreover, regulatory policies may change or additional government regulations may be enacted that could
prevent, limit or delay regulatory approval of our drug candidates. If we are not able to maintain regulatory compliance, we may lose the
regulatory approvals that we have already obtained and may not achieve or sustain profitability, which in turn could significantly harm
our business, financial condition and prospects.

Risks Related to Commercialization of Our Drug Candidates

Our drug candidates may fail to achieve the degree of market acceptance by physicians, patients, third-party payors and others in the
medical community necessary for commercial success.

Even  if  our  drug  candidates  receive  regulatory  approval,  they  may  nonetheless  fail  to  gain  sufficient  market  acceptance  by
physicians and patients and others in the medical community. Physicians and patients may prefer other drugs or drug candidates to ours.
If our drug candidates do not achieve an adequate level of acceptance, we may not generate significant revenue from sales of our drugs or
drug candidates and may not become profitable.

The degree of market acceptance of our drug candidates, if and only when they are approved for commercial sale, will depend on a

number of factors, including, but not limited to:

● the clinical indications for which our drug candidates are approved;

● physicians, hospitals and patients considering our drug candidates as a safe and effective treatment;

● whether our drug candidates have achieved the perceived advantages of our drug candidates over alternative treatments;

● the prevalence and severity of any side effects;

● product labeling or package insert requirements of the FDA or other comparable regulatory authorities;

● limitations or warnings contained in the labeling approved by the FDA or other comparable regulatory authorities;

● timing of market introduction of our drug candidates as well as competitive drugs;

● cost of treatment in relation to alternative treatments;

● availability of adequate coverage and reimbursement from third-party payors and government authorities in the United States or

any other jurisdictions;

● willingness of patients to pay any out-of-pocket expenses in the absence of coverage and reimbursement by third-party payors

and government authorities;

● relative convenience and ease of administration, including as compared with alternative treatments and competitive therapies;

and

● the effectiveness of our sales and marketing efforts.

If  our  drug  candidates  are  approved  but  fail  to  achieve  market  acceptance  among  physicians,  patients,  hospitals  or  others  in  the
medical  community,  we  will  not  be  able  to  generate  significant  revenue  or  become  profitable.  Even  if  our  drugs  achieve  market
acceptance, we may not be able to maintain such market acceptance over time if new products or technologies are introduced which are
more favorably received than our drugs, are more cost effective or render our drugs obsolete.

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We face intense competition and rapid technological change and the possibility that our competitors may develop therapies that are
similar,  more  advanced,  or  more  effective  than  ours,  which  may  adversely  affect  our  financial  condition  and  our  ability  to
successfully commercialize our drug candidates.

The biotechnology and pharmaceutical industries are intensely competitive and subject to rapid and significant technological change.
While our exclusive focus is to develop drug candidates with potential to become novel or highly differentiated drugs, we continue to
face competition with respect to our current drug candidates, and will face competition with respect to any drug candidates that we may
seek  to  develop  or  commercialize  in  the  future.  Our  competitors  include  major  pharmaceutical  companies,  specialty  pharmaceutical
companies and biotechnology companies worldwide. We are developing our drug candidates for the treatment of cancer in competition
with a number of large biopharmaceutical companies that currently market and sell drugs or are pursuing the development of drugs also
for  the  treatment  of  cancer.  Some  of  these  competitive  drugs  and  therapies  are  based  on  scientific  approaches  that  are  the  same  as  or
similar to our approach, and others are based on entirely different approaches. For details, see “Item 4. Information on the Company—B.
Business  Overview—Our  Drug  Pipeline.”  Potential  competitors  further  include  academic  institutions,  government  agencies  and  other
public  and  private  research  organizations  that  conduct  research,  seek  patent  protection  and  establish  collaborative  arrangements  for
research, development, manufacturing and commercialization.

Many of our competitors have substantially greater financial, technical, and other resources, such as larger research and development
staff  and  experienced  marketing  and  manufacturing  organizations.  Additional  mergers  and  acquisitions  in  the  biotechnology  and
pharmaceutical industries may result in even more resources being concentrated in our competitors. As a result, these companies may
obtain regulatory approval from the FDA or other comparable regulatory authorities more rapidly than we are able to and may be more
effective in selling and marketing their products as well.

Smaller or early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with
large, established companies. Competition may increase further as a result of advances in the commercial applicability of technologies
and greater availability of capital for investment in these industries. Our competitors may succeed in developing, acquiring, or licensing
on an exclusive basis, products that are more effective or less costly than any drug candidate that we may develop, or achieve earlier
patent  protection,  regulatory  approval,  product  commercialization,  and  market  penetration  than  we  do.  Additionally,  technologies
developed  by  our  competitors  may  render  our  potential  drug  candidates  uneconomical  or  obsolete,  and  we  may  not  be  successful  in
marketing our drug candidates against competitors.

The  manufacture  of  biopharmaceutical  products  is  a  complex  process  which  requires  significant  expertise  and  capital  investment,
and  if  we  encounter  problems  in  sourcing  manufacturing  capabilities  or  manufacturing  our  future  products,  our  business  could
suffer.

We have limited experience in managing the manufacturing process. The manufacture of biopharmaceutical products is a complex
process, in part due to strict regulatory requirements. We previously were the largest shareholder of I-Mab Hangzhou, which has been
constructing  a  comprehensive  biologics  manufacturing  facility  in  Hangzhou,  China.  In  connection  with  the  divestiture  of  the  Greater
China  assets  and  business  operations,  we  have  transferred  the  equity  interests  we  held  in  I-Mab  Hangzhou  to  certain  participating
shareholders of I-Mab Hangzhou in exchange for extinguishment of the existing repurchase obligations owed by us to those shareholders
in the amount of approximately US$183 million. As a result, we have ceased to be the largest shareholder of I-Mab Hangzhou, and I-
Mab  Hangzhou  has  remained  an  unconsolidated  investee  of  our  company.  We  may  seek  to  contract  with  I-Mab  Hangzhou  or  other
manufacturing facilities or build our own manufacturing capacities to manufacture our product candidates in the future, which would add
to our cost and divert management attention.

In addition, problems may arise during the manufacturing process for a variety of reasons, including equipment malfunction, failure
to follow specific protocols and procedures, problems with raw materials, delays related to the construction of new facilities or expansion
of any future manufacturing facilities, including changes in manufacturing production sites and limits to manufacturing capacity due to
regulatory  requirements,  changes  in  the  types  of  products  produced,  increases  in  the  prices  of  raw  materials,  physical  limitations  that
could inhibit continuous supply, man-made or natural disasters and environmental factors. If problems arise during the production of a
batch of future products, that batch of future products may have to be discarded and we may experience product shortages or incur added
expenses.  This  could,  among  other  things,  lead  to  increased  costs,  lost  revenue,  damage  to  customer  relationships,  time  and  expense
spent investigating the cause and, depending on the cause, similar losses with respect to other batches or products. If problems are not
discovered before such product is released to the market, recall and product liability costs may also be incurred.

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We have no experience in launching and marketing drug candidates. We may not be able to effectively build and manage our sales
network, or benefit from third-party collaborators’ sales network.

We currently have no sales, marketing or commercial product distribution capabilities and have no experience in marketing drugs.
We  and  our  third-party  collaborators  will  have  to  compete  with  other  biopharmaceutical  companies  to  recruit,  hire,  train  and  retain
marketing and sales personnel.

If  we  are  unable  or  decide  not  to  establish  internal  sales,  marketing  and  commercial  distribution  capabilities  for  any  or  all  of  the
drugs we develop, we will likely pursue collaborative arrangements regarding the sales and marketing of our drugs. However, there can
be no assurance that we will be able to establish or maintain such collaborative arrangements, or, if we are able to do so, that they will
have effective sales forces. Any revenue we receive will depend on the efforts of such third parties, which may not be successful. We
may have little or no control over the marketing and sales efforts of such third parties, and our revenue from product sales may be lower
than if we had commercialized our drug candidates ourselves. We will also face competition in our search for third parties to assist us
with the sales and marketing efforts of our drug candidates.

There  can  be  no  assurance  that  we  will  be  able  to  develop  in-house  sales  and  commercial  distribution  capabilities  or  establish  or
maintain relationships with third-party collaborators to successfully commercialize any product, and as a result, we may not be able to
generate product sales revenue.

Even if we are able to commercialize any approved drug candidates, reimbursement may be limited or unavailable in certain market
segments for our drug candidates, and we may be subject to unfavorable pricing regulations, which could harm our business.

The regulations that govern regulatory approvals, pricing and reimbursement for new therapeutic products vary widely from country
to country. Some countries require approval of the sale price of a drug before it can be marketed. In many countries, the pricing review
period begins after marketing or licensing approval is granted. In some non-U.S. markets, prescription pharmaceutical pricing remains
subject to continuing governmental control even after initial approval is granted. As a result, we might obtain regulatory approval for a
drug in a particular country, but then be subject to price regulations that delay our commercial launch of the drug and negatively impact
the  revenues  we  are  able  to  generate  from  the  sale  of  the  drug  in  that  country.  Adverse  pricing  limitations  may  hinder  our  ability  to
recoup our investment in one or more drug candidates, even if our drug candidates obtain regulatory approval.

Our ability to commercialize any drugs successfully will also depend in part on the extent to which reimbursement for these drugs
and  related  treatments  will  be  available  from  government  health  administration  authorities,  private  health  insurers  and  other
organizations.  Government  authorities  and  third-party  payors,  such  as  private  health  insurers  and  health  maintenance  organizations,
decide which medications they will pay for and establish reimbursement levels. A primary trend in the global healthcare industry is cost
containment. Government authorities and these third-party payors have attempted to control costs by limiting coverage and the amount of
reimbursement for particular medications. Increasingly, third-party payors are requiring that companies provide them with predetermined
discounts  from  list  prices  and  are  challenging  the  prices  charged  for  medical  products.  We  cannot  be  sure  that  reimbursement  will  be
available  for  any  drug  that  we  commercialize  and,  if  reimbursement  is  available,  what  the  level  of  reimbursement  will  be.
Reimbursement may impact the demand for, or the price of, any drug for which we obtain regulatory approval. Obtaining reimbursement
for our drugs may be particularly difficult because of the higher prices often associated with drugs administered under the supervision of
a physician. If reimbursement is not available or is available only to limited levels, we may not be able to successfully commercialize
any drug candidate that we successfully develop.

There may be significant delays in obtaining reimbursement for approved drug candidates, and coverage may be more limited than
the purposes for which the drug candidates are approved by the FDA or other comparable regulatory authorities. Moreover, eligibility for
reimbursement  does  not  imply  that  any  drug  will  be  paid  for  in  all  cases  or  at  a  rate  that  covers  our  costs,  including  research,
development, manufacture, sale and distribution. Interim payments for new drugs, if applicable, may also not be sufficient to cover our
costs and may not be made permanent. Payment rates may vary according to the use of the drug and the clinical setting in which it is
used,  may  be  based  on  payments  allowed  for  lower  cost  drugs  that  are  already  reimbursed,  and  may  be  incorporated  into  existing
payments for other services. Net prices for drugs may be reduced by mandatory discounts or rebates required by government healthcare
programs or private payors and by any future weakening of laws that presently restrict imports of drugs from countries where they may
be  sold  at  lower  prices  than  in  the  United  States.  Our  inability  to  promptly  obtain  coverage  and  profitable  payment  rates  from  both
government-funded and private payors for any future approved drug candidates and any new drugs that we develop could have a material
adverse effect on our business, our operating results, and our overall financial condition.

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Current  and  future  legislation  may  increase  the  difficulty  and  cost  for  us  to  obtain  marketing  approval  of  and  commercialize  our
drug candidates and affect the prices we may obtain.

In the United States and certain other jurisdictions, there have been a number of legislative and regulatory changes and proposed
changes regarding the healthcare system that could prevent or delay marketing approval of our drug candidates, restrict post-approval
activities and affect our ability to sell profitably any drug candidates for which we obtain marketing approval.

The Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act of 2010, became
effective.  This  act  is  a  sweeping  law  intended  to  broaden  access  to  health  insurance,  reduce  or  constrain  the  growth  of  healthcare
spending,  enhance  remedies  against  fraud  and  abuse,  add  new  transparency  requirements  for  the  healthcare  and  health  insurance
industries, impose new taxes and fees on the health industry and impose additional health policy reforms. The following sets forth the
major provisions of this act that may affect our drug candidates:

● an  annual,  nondeductible  fee  on  any  entity  that  manufactures  or  imports  specified  branded  prescription  drugs  and  biologic

products;

● an increase in the statutory minimum rebates a manufacturer must pay under the Medicaid Drug Rebate Program;

● expansion of healthcare fraud and abuse laws, including the False Claims Act and the Anti-Kickback Statute, new government

investigative powers, and enhanced penalties for noncompliance;

● a new Medicare Part D coverage gap discount program, in which manufacturers must agree to offer 50% point-of-sale discounts

off negotiated prices;

● extension of manufacturers’ Medicaid rebate liability;

● expansion of eligibility criteria for Medicaid programs;

● expansion of the entities eligible for discounts under the Public Health Service Act’s pharmaceutical pricing program;

● new  requirements  to  report  financial  arrangements  with  physicians  and  teaching  hospitals  with  Centers  for  Medicare  and

Medicaid Services;

● a new requirement to annually report to the FDA drug samples that manufacturers and distributors provide to physicians; and

● a  new  Patient-Centered  Outcomes  Research  Institute  to  oversee,  identify  priorities  in,  and  conduct  comparative  clinical

effectiveness research, along with funding for such research.

Legislative  and  regulatory  proposals  have  been  made  to  expand  post-approval  requirements  and  restrict  sales  and  promotional
activities for pharmaceutical products. We cannot be sure whether additional legislative changes will be enacted, or whether the FDA
regulations, guidance or interpretations will be changed, or what the impact of such changes on the marketing approvals, if any, of our
drug candidates may be. In addition, increased scrutiny by the U.S. Congress of the FDA’s approval process may significantly delay or
prevent  marketing  approval,  as  well  as  subject  us  to  more  stringent  product  labeling  and  post-marketing  conditions  and  other
requirements.

As  we  engage  in  collaborations  worldwide,  including  conducting  clinical  trials  globally,  we  may  be  exposed  to  specific  risks  of
conducting our business and operations in international markets.

Markets outside of the U.S. form an important component of our growth strategy, as we conduct certain of our clinical trials outside
of  the  U.S.  If  we  fail  to  obtain  applicable  licenses  or  fail  to  enter  into  strategic  collaboration  arrangements  with  third  parties  in  these
markets, or if these collaboration arrangements turn out unsuccessful, our revenue-generating growth potential will be adversely affected.

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Moreover, international business relationships subject us to additional risks that may materially adversely affect our ability to attain

or sustain profitable operations, including:

● efforts  to  enter  into  collaboration  or  licensing  arrangements  with  third  parties  in  connection  with  our  international  sales,
marketing  and  distribution  efforts  may  increase  our  expenses  or  divert  our  management’s  attention  from  the  acquisition  or
development of drug candidates;

● changes in a specific country’s or region’s political and cultural climate or economic condition;

● differing regulatory requirements for drug approvals and marketing internationally;

● difficulty of effective enforcement of contractual provisions in local jurisdictions;

● potentially reduced protection for intellectual property rights;

● potential third-party patent rights;

● unexpected changes in tariffs, trade barriers and regulatory requirements;

● economic weakness, including inflation or political instability;

● compliance with tax, employment, immigration and labor laws for employees traveling abroad;

● the effects of applicable local tax structures and potentially adverse tax consequences;

● currency fluctuations, which could result in increased operating expenses and reduced revenue, and other obligations incidental

to doing business in another country;

● workforce uncertainty and labor unrest;

● the potential for so-called parallel importing, which is what happens when a local seller, faced with high or higher local prices,

opts to import goods from an international market with low or lower prices rather than buying them locally;

● failure of our employees and contracted third parties to comply with Office of Foreign Assets Control rules and regulations and

the Foreign Corrupt Practices Act of the United States, and other applicable rules and regulations;

● production shortages resulting from any events affecting raw material supply or manufacturing capabilities abroad; and

● business  interruptions  resulting  from  geo-political  actions,  including  war  and  terrorism,  or  natural  disasters,  including

earthquakes, volcanoes, typhoons, floods, hurricanes and fires.

These and other risks may materially adversely affect our ability to attain or sustain revenue from international markets.

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If safety, efficacy, or other issues arise with any medical product that is used in combination with our drug candidates, we may be
unable to market such drug candidate or may experience significant regulatory delays or supply shortages, and our business could be
materially harmed.

We plan to develop certain of our drug candidates for use as a combination therapy. If the FDA or another comparable regulatory
agency revokes its approval of another therapeutic we use in combination with our drug candidates, we will not be able to market our
drug candidates in combination with such revoked therapeutic. If safety or efficacy issues arise with these or other therapeutics that we
seek  to  combine  with  our  drug  candidates  in  the  future,  we  may  experience  significant  regulatory  delays,  and  we  may  be  required  to
redesign  or  terminate  the  applicable  clinical  trials.  In  addition,  if  manufacturing  or  other  issues  result  in  a  supply  shortage  of  any
component of our combination drug candidates or if we cannot secure supply of any component of our drug candidates at commercially
reasonable or acceptable prices, we may not be able to complete clinical development of our drug candidates on our current timeline or
within our current budget, or at all.

Lack of third-party combination drugs may materially and adversely affect demand for our drugs.

Our drug candidates may be administered in combination with drugs of other pharmaceutical companies as one regimen. In addition,
we often use such third-party drugs in our development and clinical trials as controls for our studies. As a result, both the results of our
clinical trials and the sales of our drugs may be affected by the availability of these third-party drugs. If other pharmaceutical companies
discontinue these combination drugs, regimens that use these combination drugs may no longer be prescribed, and we may not be able to
introduce or find an alternative drug to be used in combination with our drugs at all or in a timely manner and on a cost-effective basis.
As  a  result,  demand  for  our  drugs  may  be  lowered,  which  would  in  turn  materially  and  adversely  affect  our  business  and  results  of
operations.

Risks Related to Our Reliance on Third Parties

As we rely on third parties to conduct our pre-clinical studies and clinical trials, if we lose our relationships with these third parties or
if  they  do  not  successfully  carry  out  their  contractual  duties  or  meet  expected  deadlines,  we  may  not  be  able  to  obtain  regulatory
approval for or commercialize our drug candidates and our business could be substantially harmed.

We have relied on and plan to continue to rely on third-party CROs to monitor and manage data for some of our ongoing pre-clinical
and clinical programs. We rely on these parties for the execution of our pre-clinical and clinical trials, and control only certain aspects of
their  activities.  Nevertheless,  we  are  responsible  for  ensuring  that  each  of  our  studies  is  conducted  in  accordance  with  the  applicable
protocol  and  legal,  regulatory  and  scientific  standards,  and  our  reliance  on  the  CROs  does  not  relieve  us  of  our  regulatory
responsibilities.

We also rely on third parties to assist in conducting our pre-clinical studies in accordance with good laboratory practices. We and our
CROs  are  required  to  comply  with  good  clinical  practice,  good  laboratory  practice  and  other  regulatory  regulations  and  guidelines
enforced by the FDA and comparable foreign regulatory authorities for all of our drug candidates in clinical development. Regulatory
authorities  enforce  these  regulatory  requirements  of  good  clinical  practice,  good  laboratory  practice  or  other  regulatory  requirements
through periodic inspections of trial sponsors, investigators and trial sites. If we or any of our CROs fail to comply with applicable good
clinical  practice,  good  laboratory  practice  or  other  regulatory  requirements,  the  data  generated  in  our  clinical  trials  may  be  deemed
unreliable and the FDA or other comparable regulatory authorities may require us to perform additional clinical studies before approving
our marketing applications. There can be no assurance that upon inspection by a given regulatory authority, such regulatory authority will
determine  that  any  of  our  clinical  trials  complies  with  requirements  of  good  clinical  practice.  In  addition,  our  clinical  trials  must  be
conducted with drug candidates or products produced under current good manufacturing practice requirements. Failure to comply with
these regulations may require us to repeat pre-clinical and clinical trials, which would delay the regulatory approval process.

Our  CROs  have  the  right  to  terminate  their  agreements  with  us  in  the  event  of  an  unrectified  material  breach.  If  any  of  our
relationships with our third-party CROs is terminated, we may not be able to (i) enter into arrangements with alternative CROs or do so
on commercially reasonable terms or (ii) meet our desired clinical development timelines. In addition, there is a natural transition period
when a new CRO commences work, and the new CRO may not provide the same type or level of services as the original provider and
data from our clinical trials may be compromised as a result. There is also a need for relevant technology to be transferred to the new
CRO, which may take time and further delay our development timelines.

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Except  for  remedies  available  to  us  under  our  agreements  with  our  CROs,  we  cannot  control  whether  or  not  our  CROs  devote
sufficient time and resources to our ongoing clinical, nonclinical and pre-clinical programs. If our CROs do not successfully carry out
their  contractual  duties  or  obligations  or  meet  expected  deadlines  or  if  the  quality  or  accuracy  of  the  clinical  data  they  obtain  is
compromised due to their failure to adhere to our clinical protocols, regulatory requirements or for other reasons, our clinical trials may
be extended, delayed or terminated and we may not be able to obtain regulatory approval for or successfully commercialize our drug
candidates. As a result, our results of operations and the commercial prospects for our drug candidates would be harmed and our costs
could increase. In turn, our ability to generate revenues could be delayed or compromised.

Because we rely on third parties, our internal capacity to perform these functions is limited. Outsourcing these functions involves
certain risks that third parties may not perform to our standards, may not produce results in a timely manner or may fail to perform at all.
In addition, the use of third-party service providers requires us to disclose our proprietary information to these third parties, which could
increase  the  risk  that  such  information  will  be  misappropriated.  We  currently  have  a  small  number  of  employees,  which  limits  the
internal resources we could utilize to identify and monitor our third-party service providers. To the extent we are unable to identify and
successfully manage the performance of third-party service providers in the future, our business may be adversely affected. Though we
carefully manage our relationships with our CROs, there can be no assurance that we will not encounter similar challenges or delays in
the future or that these delays or challenges will not have a material adverse impact on our business, financial condition and prospects.

We plan to continue to rely on third parties to manufacture our drug candidate supplies, and we intend to rely on third parties for the
manufacturing  process  of  our  drug  candidates,  if  approved.  Our  business  could  be  harmed  if  those  third  parties  fail  to  provide  us
with sufficient quantities of product or fail to do so at acceptable quality levels or prices.

We have relied on and plan to continue to rely on third-party vendors to manufacture supplies and process our drug candidates. We
have not yet manufactured or processed our drug candidates on a commercial scale and may not be able to do so for any of our drug
candidates. We have limited experience in managing the manufacturing process, and our process may be more difficult or expensive than
the approaches currently in use.

Our reliance on third-party manufacturers exposes us to certain risks, including, but not limited to, the following:

● we  may  be  unable  to  identify  manufacturers  on  acceptable  terms  or  at  all  because  the  number  of  potential  manufacturers  is
limited and the NMPA, the FDA or other comparable regulatory authorities must approve any manufacturers as part of their
regulatory  oversight  of  our  drug  candidates.  This  approval  would  require  new  testing  and  compliance  inspections  of  current
good  manufacturing  practice  by  the  NMPA,  the  FDA  or  other  comparable  regulatory  authorities.  In  addition,  a  new
manufacturer would have to be educated in, or develop substantially equivalent processes for, production of our drugs;

● our contract manufacturers may have little or no experience with manufacturing our drug candidates, and therefore may require
a  significant  amount  of  support  from  us  in  order  to  implement  and  maintain  the  infrastructure  and  processes  required  to
manufacture our drug candidates;

● our  contract  manufacturers  may  have  limited  capacity  or  limited  manufacturing  slots,  which  may  affect  the  timeline  for  the

production of our drugs;

● our  contract  manufacturers  might  be  unable  to  timely  manufacture  our  drug  candidates  or  produce  the  quantity  and  quality

required to meet our clinical and commercial needs, if any;

● contract  manufacturers  may  not  be  able  to  execute  our  manufacturing  procedures  and  other  logistical  support  requirements

appropriately;

● our  future  contract  manufacturers  may  not  perform  as  agreed,  may  not  devote  sufficient  resources  to  our  drugs,  or  may  not
remain in the contract manufacturing business for the time required to supply our clinical trials or to successfully produce, store
and distribute our drugs;

● our contract manufacturers are subject to ongoing periodic unannounced inspections by the NMPA and the FDA to ensure strict
compliance  with  current  good  manufacturing  practice  and  other  government  regulations  in  the  PRC  and  the  United  States,
respectively, and by other comparable regulatory authorities for corresponding regulatory requirements. We do not have control
over third-party manufacturers’ compliance with these regulations and requirements;

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● we  may  not  own,  or  may  have  to  share,  the  intellectual  property  rights  to  any  improvements  made  by  our  third-party

manufacturers in the manufacturing process for our drugs;

● our contract manufacturers could breach or terminate their agreements with us;

● our contract manufacturers may be unable to sustain their business and become bankrupt as a result;

● raw  materials  and  components  used  in  the  manufacturing  process,  particularly  those  for  which  we  have  no  other  source  or

supplier, may not be available or may not be suitable or acceptable for use due to material or component defects;

● products and components from our third-party manufacturers may be subject to additional customs and import charges, which

may cause us to incur delays or additional costs as a result;

● our contract manufacturers and critical reagent suppliers may be subject to inclement weather, as well as natural or man-made

disasters; and

● our contract manufacturers may have unacceptable or inconsistent product quality success rates and yields.

Each of these risks could delay or prevent the completion of our clinical trials or the approval of any of our drug candidates by the
FDA or other comparable regulatory authorities, result in higher costs or adversely impact the commercialization of our drug candidates.
In addition, we rely on third parties to perform certain specification tests on our drug candidates prior to delivery to patients. If these tests
are not appropriately done and test data is not reliable, patients could be put at risk of serious harm and the FDA or other comparable
regulatory authorities could place significant restrictions on our company until deficiencies are remedied.

The manufacture of biopharmaceutical products is complex and requires significant expertise and capital investment, including the
development  of  advanced  manufacturing  techniques  and  process  controls.  Currently,  our  drug  raw  materials  for  our  manufacturing
activities are supplied by multiple source suppliers. We have agreements for the supply of drug materials with manufacturers or suppliers
that we believe have sufficient capacity to meet our demands. In addition, we believe that adequate alternative sources for such supplies
exist. However, there is a risk that, if supplies are interrupted, our business would be materially harmed.

Manufacturers of biopharmaceutical products often encounter difficulties in production, particularly in scaling up or out, validating
the  production  process,  and  assuring  high  reliability  of  the  manufacturing  process,  including  the  absence  of  contamination.  These
problems include logistics and shipping, difficulties with production costs and yields, quality control, including stability of the product,
product  testing,  operator  error  and  availability  of  qualified  personnel,  as  well  as  compliance  with  strictly  enforced  regulations  in  the
United States and other applicable jurisdictions. Further, if contaminants are discovered in the supply of our drug candidates or in the
manufacturing  facilities,  such  manufacturing  facilities  may  need  to  be  closed  for  an  extended  period  of  time  for  us  to  investigate  and
remedy the contamination. There can be no assurance that any stability failures or other issues relating to the manufacture of our drug
candidates  will  not  occur  in  the  future.  Additionally,  our  contract  manufacturers  may  experience  manufacturing  difficulties  due  to
resource constraints or as a result of labor disputes or unstable political environment. If our contract manufacturers were to encounter any
of these difficulties, or otherwise fail to comply with their contractual obligations, our ability to provide our drug candidate to patients in
clinical trials would be jeopardized. Any delay or interruption in the supply of clinical trial supplies could delay the completion of our
clinical trials, increase the costs associated with maintaining clinical trial programs and, depending upon the period of delay, require us to
begin new clinical trials at additional expense or terminate clinical trials completely.

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We  have  entered  into  collaborations  and  may  form  or  seek  collaborations  or  strategic  alliances  or  enter  into  additional  licensing
arrangements in the future, and we may not realize the benefits of such alliances or licensing arrangements.

We may form or seek strategic alliances, create joint ventures or collaborations, or enter into additional licensing arrangements with
third  parties  that  we  believe  will  complement  or  augment  our  development  and  commercialization  efforts  with  respect  to  our  drug
candidates and any future drug candidates that we may develop. Any of these relationships may require us to incur recurring or non-
recurring expenses and other charges, increase our near and long-term expenditures, issue securities that dilute the value of our ADSs, or
disrupt  our  management  and  business.  In  addition,  we  face  significant  competition  in  seeking  appropriate  strategic  partners  and  the
negotiation  process  is  time-consuming  and  complex.  Moreover,  we  may  not  be  successful  in  our  efforts  to  establish  a  strategic
partnership  or  other  alternative  arrangements  for  our  drug  candidates  because  they  may  be  deemed  to  be  at  too  early  a  stage  of
development for collaborative effort and third parties may not view our drug candidates as having the requisite potential to demonstrate
safety and efficacy. If and when we collaborate with a third party for the development and commercialization of a drug candidate, we can
expect to relinquish some or all of the control over the future success of that drug candidate to the third party.

Further,  collaborations  involving  our  drug  candidates  are  subject  to  specific  risks,  which  include,  but  are  not  limited  to,  the

following:

● collaborators have significant discretion in determining the efforts and resources that they will apply to a collaboration;

● collaborators may not pursue the development and commercialization of our drug candidates or may elect not to continue or
renew the development or commercialization programs based on clinical trial results, change in their strategic focus due to the
acquisition of competitive drugs, availability of funding, or other external factors, such as a business combination that diverts
resources or creates competing priorities;

● collaborators  may  delay  clinical  trials,  provide  insufficient  funding  for  a  clinical  trial,  discontinue  a  clinical  trial,  repeat  or

conduct new clinical trials, or require a new formulation of a drug candidate for clinical testing;

● collaborators could independently develop, or develop with third parties, drugs that compete directly or indirectly with our drug

candidates or future drugs;

● collaborators  with  marketing  and  distribution  rights  to  one  or  more  of  our  drug  candidates  or  future  drugs  may  not  commit

sufficient resources to their marketing and distribution;

● collaborators  may  not  properly  maintain  or  defend  our  intellectual  property  rights  or  may  use  our  intellectual  property  or
proprietary  information  in  a  way  that  gives  rise  to  actual  or  threatened  litigation  that  could  jeopardize  or  invalidate  our
intellectual property or proprietary information or expose us to potential liability;

● collaborators may not always be cooperative or responsive in providing their services in a clinical trial;

● disputes  may  arise  between  us  and  a  collaborator  that  cause  a  delay  or  termination  of  the  research,  development  or
commercialization of our drug candidates, or that result in costly litigation or arbitration that diverts management attention and
resources;

● collaborations may be terminated and, if terminated, may result in a need for additional capital to pursue further development or

commercialization of the applicable drug candidates; and

● collaborators  may  own  or  co-own  intellectual  property  covering  our  drug  candidates  or  future  drugs  that  results  from  our
collaborating with them, and in such cases, we would not have the exclusive right to commercialize such intellectual property.

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As a result, for any ongoing collaborations or any collaboration or license agreements and strategic partnerships we may enter into in
the  future,  we  may  not  be  able  to  realize  the  benefit  of  such  transactions  if  we  are  unable  to  address  the  risks  mentioned  above  and
successfully  integrate  these  agreements  or  partnerships  with  our  existing  operations  and  company  culture,  which  could  delay  our
timelines or otherwise adversely affect our business. For example, in September 2020, we granted AbbVie Ireland Unlimited Company,
or AbbVie, a global license, excluding mainland China, Hong Kong and Macau, to develop and commercialize lemzoparlimab (as well as
certain  other  compounds  directed  against  CD47).  On  August  15,  2022,  we  and  AbbVie  Global  Enterprises  Ltd.  (as  an  assignee  of
AbbVie) entered into an amendment to the original licensing and collaboration agreement. This amended agreement is referred to as the
AbbVie  Collaboration  Agreement.  AbbVie  discontinued  certain  clinical  studies  of  lemzoparlimab,  and  such  discontinuations  were  not
related to any specific or unexpected safety concerns. This change led to a lowered probability of achieving a key milestone that was
included in the consideration of revenue recognition in prior years. Accordingly, we recorded a reduction in the revenue of approximately
US$48.0  million  in  the  second  half  of  2022.  On  September  21,  2023,  we  received  a  notice  from  AbbVie,  terminating  the  AbbVie
Collaboration Agreement in its entirety. As a result, we recognized an impairment of goodwill of RMB162.6 million (US$22.9 million)
in  2023.  Following  the  effectiveness  of  the  termination  and  the  divestiture  of  the  Greater  China  assets  and  business  operations,  we
currently  own  the  ex-Greater  China  rights  to  develop  and  commercialize  certain  CD47  compounds  and  products,  including
lemzoparlimab. For a more detailed discussion, please see “Item 4. Information on the Company—A. History and Development of the
Company” and “Item 5. Operating and Financial Review and Prospects.”

In  addition,  we  may  even  face  disputes,  litigations  or  other  proceedings  in  relation  to  our  collaboration  relationship  with  other
parties.  For  example,  disputes  have  arisen  between  Tracon  Pharmaceuticals,  Inc.,  or  Tracon,  and  us  in  relation  to  the  collaboration
agreements to co-develop our proprietary CD73 antibody, TJD5 and to co-develop up to five bispecific antibodies. These disputes were
presented  to  a  binding  arbitration  proceeding  under  the  Rules  of  Arbitration  of  the  International  Chamber  of  Commerce  before  an
arbitration tribunal. On April 25, 2023, the arbitration award determined that the agreement in relation to TJD5 has been terminated for a
pre-agreed termination fee of US$9.0 million plus interest payable pursuant to the original agreement, and therefore Tracon has no rights
to share any future economics with I-Mab. The arbitration award completely denied Tracon’s damages claim of over US$200 million for
any breach and awarded no damages to Tracon. The tribunal also confirmed the termination of the agreement in relation to bispecific
antibodies.  Based  on  the  arbitration  award,  I-Mab  bears  a  portion  of  Tracon’s  legal  fees  and  costs,  totaling  approximately  US$13.5
million. As of the date of this annual report, we have paid the pre-agreed termination fee in relation to TJD5 and the agreed-upon portion
of  Tracon’s  legal  fees  and  costs  to  Tracon.  See  “Item  8.  Financial  Information—A.  Consolidated  Statements  and  Other  Financial
Information—Legal Proceedings” for details. We cannot assure you that similar disputes will not occur again and we cannot assure you
that no lawsuits will be initiated by other companies in the future. Also, these legal proceedings may be expensive, time-consuming and
disruptive to our operations and divert our management’s attention. We cannot predict the possible outcome of the legal proceedings of
such nature in the future and there can also be no assurance that we will prevail in those legal proceedings.

Neither can we be certain that, following a strategic transaction or license, we will be able to achieve the revenue or specific net
income that justifies such transaction. If we are unable to reach agreements with suitable collaborators on a timely basis, on acceptable
terms, or at all, we may have to curtail the development of a drug candidate, reduce or delay its development program or one or more of
our  other  development  programs,  delay  its  potential  commercialization  or  reduce  the  scope  of  any  sales  or  marketing  activities,  or
increase  our  expenditures  and  undertake  development  or  commercialization  activities  at  our  own  expense.  If  we  elect  to  fund  and
undertake development or commercialization activities on our own, we may need to obtain additional expertise and additional capital,
which may not be available to us on acceptable terms or at all. If we fail to enter into collaborations and do not have sufficient funds or
expertise  to  undertake  the  necessary  development  and  commercialization  activities,  we  may  not  be  able  to  further  develop  our  drug
candidates or bring them to market and generate product sales revenue, which would harm our business, financial condition, results of
operations and prospects.

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Risks Related to Our Intellectual Property

If we are unable to obtain and maintain patent and other intellectual property protection for our drug candidates, or if the scope of
such  intellectual  property  rights  obtained  is  not  sufficiently  broad,  third  parties  could  develop  and  commercialize  products  and
technologies similar or identical to ours and compete directly against us, and our ability to successfully commercialize any product or
technology may be adversely affected.

Our  success  depends  in  large  part  on  our  ability  to  protect  our  proprietary  technology  and  drug  candidates  from  competition  by
obtaining, maintaining, defending and enforcing our intellectual property rights, including patent rights. Following the divestiture of the
Greater China assets and business operations and as of the date of this annual report, our owned patent portfolio consists of 58 issued
patents  and  82  patent  applications  primarily  in  connection  with  the  drug  candidates  in  our  Global  portfolio,  including  8  Patent
Cooperation  Treaty  patent  applications,  10  U.S.  patent  applications,  one  PRC  patent  application  and  121  patent  applications  in  other
jurisdictions.  We  seek  to  protect  the  drug  candidates  and  technology  that  we  consider  commercially  important  by  filing  patent
applications  in  the  United  States  and  other  countries  or  regions,  relying  on  trade  secrets  or  pharmaceutical  regulatory  protection  or
employing a combination of these methods. This process is expensive and time-consuming, and we or our licensors may not be able to
file and prosecute all necessary or desirable patent applications in all jurisdictions at a reasonable cost or in a timely manner. It is also
possible that we or our licensors will fail to identify patentable aspects of our research and development output before it is too late to
obtain patent protection.

The  patent  position  of  biotechnology  and  pharmaceutical  companies  generally  is  highly  uncertain,  involves  complex  legal  and
factual questions and has in recent years been the subject of much litigation. As a result, the issuance, scope, validity, enforceability and
commercial value of our patent rights are highly uncertain. Our pending and future patent applications may not result in patents being
issued  which  protect  our  technology  or  drug  candidates  or  which  effectively  prevent  others  from  commercializing  competitive
technologies and drug candidates. The patent examination process may require us or our licensors to narrow the scope of the claims of
our or our licensors’ pending and future patent applications, which may limit the scope of patent protection that may be obtained. We
cannot assure that all of the potentially relevant prior art relating to our patents and patent applications has been found. If such prior art
exists, it can invalidate a patent or prevent a patent application from being issued as a patent.

Even if patents do issue on any of these applications, there can be no assurance that a third party will not challenge their validity,
enforceability,  or  scope,  which  may  result  in  the  patent  claims  being  narrowed  or  invalidated,  or  that  we  will  obtain  sufficient  claim
scope  in  those  patents  to  prevent  a  third  party  from  competing  successfully  with  our  drug  candidates.  We  may  become  involved  in
interference,  inter  partes  review,  post  grant  review,  ex  parte  reexamination,  derivation,  opposition  or  similar  other  proceedings
challenging our patent rights or the patent rights of others. An adverse determination in any such proceeding could reduce the scope of,
or invalidate, our patent rights, allow third parties to commercialize our technology or drug candidates and compete directly with us, or
result  in  our  inability  to  manufacture  or  commercialize  drug  candidates  without  infringing  third-party  patent  rights.  Thus,  even  if  our
patent  applications  issue  as  patents,  they  may  not  issue  in  a  form  that  will  provide  us  with  any  meaningful  protection,  prevent
competitors from competing with us or otherwise provide us with any competitive advantage.

Our  competitors  may  be  able  to  circumvent  our  patents  by  developing  similar  or  alternative  technologies  or  drug  candidates  in  a
non-infringing manner. The issuance of a patent is not conclusive as to its scope, validity or enforceability, and our owned and licensed
patents may be challenged in the courts or patent offices in the United States and other countries. Such challenges may result in patent
claims being narrowed, invalidated or held unenforceable, which could limit our ability to stop or prevent us from stopping others from
using  or  commercializing  similar  or  identical  technology  and  drug  candidates,  or  limit  the  duration  of  the  patent  protection  of  our
technology  and  drug  candidates.  Given  the  amount  of  time  required  for  the  development,  testing  and  regulatory  review  of  new  drug
candidates,  patents  protecting  such  assets  might  expire  before  or  shortly  after  such  assets  are  commercialized.  As  a  result,  our  patent
portfolio may not provide us with sufficient rights to exclude others from commercializing drug candidates similar or identical to ours.

Changes in either the patent laws or interpretation of the patent laws in the United States and other countries may diminish the value
of our patents or narrow the scope of our patent protection. Under the America Invents Act enacted in 2011, the United States moved to
this first-to-file system in early 2013 from the previous system under which the first to make the claimed invention was entitled to the
patent.  Assuming  the  other  requirements  for  patentability  are  met,  the  first  to  file  a  patent  application  is  entitled  to  the  patent.
Publications of discoveries in the scientific literature often lag behind the actual discoveries, and patent applications in the United States
and other jurisdictions are typically not published until 18 months after filing, or in some cases not at all. Therefore, we cannot be certain
that we were the first to make the inventions claimed in our patents or pending patent applications, or that we were the first to file for
patent protection of such inventions.

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We enjoy only limited geographical protection with respect to certain patents and may not be able to protect our intellectual property
rights throughout the world.

Filing and prosecuting patent applications and defending patents covering our drug candidates in all countries throughout the world
could be prohibitively expensive. Competitors may use our and our licensors’ technologies in jurisdictions where we have not obtained
patent protection to develop their own drug candidates and, further, may export otherwise infringing drug candidates to territories, where
we and our licensors have patent protection, but enforcement rights are not as strong as that in the United States or Europe. These drug
candidates  may  compete  with  our  drug  candidates,  and  our  and  our  licensors’  patents  or  other  intellectual  property  rights  may  not  be
effective or sufficient to prevent them from competing.

The laws of some jurisdictions do not protect intellectual property rights to the same extent as the laws or rules and regulations in the
United States and Europe, and many companies have encountered significant difficulties in protecting and defending such rights in such
jurisdictions. The legal systems of certain countries, particularly certain developing countries, do not favor the enforcement of patents,
trade  secrets  and  other  intellectual  property  protection,  which  could  make  it  difficult  for  us  to  stop  the  infringement  of  our  patents  or
marketing of competing drug candidates in violation of our proprietary rights generally. Proceedings to enforce our patent rights in other
jurisdictions, whether or not successful, could result in substantial costs and divert our efforts and attention from other aspects of our
business, could put our patents at risk of being invalidated or interpreted narrowly and our patent applications at risk of not issuing as
patents, and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate and the damages
or  other  remedies  awarded,  if  any,  may  not  be  commercially  meaningful.  Accordingly,  our  efforts  to  enforce  our  intellectual  property
rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that we develop or
license. Furthermore, while we intend to protect our intellectual property rights in our expected significant markets, we cannot ensure
that  we  will  be  able  to  initiate  or  maintain  similar  efforts  in  all  jurisdictions  in  which  we  may  wish  to  market  our  drug  candidates.
Accordingly, our efforts to protect our intellectual property rights in such countries may be inadequate, which may have an adverse effect
on our ability to successfully commercialize our drug candidates in all of our expected significant foreign markets. If we or our licensors
encounter difficulties in protecting, or are otherwise precluded from effectively protecting, the intellectual property rights important for
our business in such jurisdictions, the value of these rights may be diminished and we may face additional competition from others in
those jurisdictions.

Some countries also have compulsory licensing laws under which a patent owner may be compelled to grant licenses to third parties.
In addition, some countries limit the enforceability of patents against government agencies or government contractors. In those countries,
the patent owner may have limited remedies, which could materially diminish the value of such patents. If we or any of our licensors is
forced to grant a license to third parties with respect to any patents relevant to our business, our competitive position may be impaired.

Obtaining  and  maintaining  our  patent  protection  depends  on  compliance  with  various  procedural,  document  submission,  fee
payment, and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated
for non-compliance with these requirements.

Periodic maintenance and annuity fees on any issued patent are due to be paid to the United States Patent and Trademark Office and
foreign patent agencies over the lifetime of a patent. In addition, the United States Patent and Trademark Office and other foreign patent
agencies  require  compliance  with  a  number  of  procedural,  documentary,  fee  payment,  and  other  similar  provisions  during  the  patent
application process. While an inadvertent failure to make payment of such fees or to comply with such provisions can in many cases be
cured  by  payment  of  a  late  fee  or  by  other  means  in  accordance  with  the  applicable  rules,  there  are  situations  in  which  such  non-
compliance will result in the abandonment or lapse of the patent or patent application, and the partial or complete loss of patent rights in
the relevant jurisdiction.

Non-compliance  events  that  could  result  in  abandonment  or  lapse  of  a  patent  or  patent  application  include  failure  to  respond  to
official  actions  within  prescribed  time  limits,  and  non-payment  of  fees  and  failure  to  properly  legalize  and  submit  formal  documents
within prescribed time limits. If we or our licensors fail to maintain the patents and patent applications covering our drug candidates or if
we or our licensors otherwise allow our patents or patent applications to be abandoned or lapse, our competitors might be able to enter
the market, which would hurt our competitive position and could impair our ability to successfully commercialize our drug candidates in
any indication for which they are approved.

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Our  owned  and  in-licensed  patents  and  other  intellectual  property  may  be  subject  to  further  priority  disputes  or  to  inventorship
disputes and similar proceedings. If we or our future licensors are unsuccessful in any of these proceedings, we may be required to
obtain licenses from third parties, which may not be available on commercially reasonable terms or at all, or to modify or cease the
development,  manufacture  and  commercialization  of  one  or  more  of  the  drug  candidates  we  may  develop,  which  could  have  a
material adverse impact on our business.

We  may  license  in  patents  from  other  parties  from  time  to  time.  We  or  our  future  licensors  may  be  subject  to  claims  that  former
employees, collaborators or other third parties have an interest in our owned or future in-licensed patents or other intellectual property as
an  inventor  or  co-inventor.  If  we  or  our  future  licensors  are  unsuccessful  in  any  interference  proceedings  or  other  priority  or  validity
disputes (including any patent oppositions) to which we or they are subject, we may lose valuable intellectual property rights through the
loss  of  one  or  more  patents  owned  or  licensed  or  our  owned  or  licensed  patent  claims  may  be  narrowed,  invalidated,  or  held
unenforceable. In addition, if we or our future licensors are unsuccessful in any inventorship disputes to which we or they are subject, we
may  lose  valuable  intellectual  property  rights,  such  as  exclusive  ownership  of,  or  the  exclusive  right  to  use,  our  owned  or  future  in-
licensed patents. If we or our future licensors are unsuccessful in any interference proceeding or other priority or inventorship dispute,
we may be required to obtain and maintain licenses from third parties, including parties involved in any such interference proceedings or
other priority or inventorship disputes. Such licenses may not be available on commercially reasonable terms or at all, or may be non-
exclusive. If we are unable to obtain and maintain such licenses, we may need to modify or cease the development, manufacture, and
commercialization  of  one  or  more  of  our  drug  candidates.  The  loss  of  exclusivity  or  the  narrowing  of  our  owned  and  licensed  patent
claims could limit our ability to stop others from using or commercializing similar or identical drug products. Any of the foregoing could
result in a material adverse effect on our business, financial condition, results of operations, or prospects. Even if we are successful in an
interference proceeding or other similar priority or inventorship disputes, it could result in substantial costs and be a distraction to our
management and other employees.

Claims that our drug candidates or the sale or use of our future products infringe, misappropriate or otherwise violate the patents or
other  intellectual  property  rights  of  third  parties  could  result  in  costly  litigation  or  could  require  substantial  time  and  money  to
resolve, even if litigation is avoided.

We cannot guarantee that our drug candidates or the sale or use of our future products do not and will not in the future infringe,
misappropriate  or  otherwise  violate  third-party  patents  or  other  intellectual  property  rights.  Third  parties  might  allege  that  we  are
infringing  their  patent  rights  or  that  we  have  misappropriated  their  trade  secrets,  or  that  we  are  otherwise  violating  their  intellectual
property rights, whether with respect to the manner in which we have conducted our research, or with respect to the use or manufacture
of  the  compounds  we  have  developed  or  are  developing.  Litigation  relating  to  patents  and  other  intellectual  property  rights  in  the
biopharmaceutical and pharmaceutical industries is common, including patent infringement lawsuits. The various markets in which we
plan to operate are subject to frequent and extensive litigation regarding patents and other intellectual property rights. Some claimants
may have substantially greater resources than we have and may be able to sustain the costs of complex intellectual property litigation to a
greater degree and for longer periods of time than we could. Third parties might resort to litigation against us or other parties we have
agreed  to  indemnify,  which  litigation  could  be  based  on  either  existing  intellectual  property  or  intellectual  property  that  arises  in  the
future.

It is also possible that we failed to identify, or may in the future fail to identify, patents or patent applications held by third parties
that  cover  our  drug  candidates.  Publication  of  discoveries  in  the  scientific  or  patent  literature  often  lags  behind  actual  discoveries.
Therefore, we cannot be certain that we were the first to invent, or the first to file patent applications on, our drug candidates or for their
uses, or that our drug candidates will not infringe patents that are currently issued or that are issued in the future. In the event that a third
party  has  also  filed  a  patent  application  covering  one  of  our  drug  candidates  or  a  similar  invention,  our  patent  application  may  be
regarded  as  a  competing  application  and  may  not  be  approved  in  the  end.  Additionally,  pending  patent  applications  that  have  been
published can, subject to certain limitations, be later amended in a manner that could cover our products or their use.

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If a third party were to assert claims of patent infringement against us, even if we believe such third-party claims are without merit, a
court of competent jurisdiction could hold that these third-party patents are valid, enforceable and infringed, and the holders of any such
patents  may  be  able  to  block  our  ability  to  commercialize  the  applicable  product  unless  we  obtained  a  license  under  the  applicable
patents, or until such patents expire or are finally determined to be invalid or unenforceable. Similarly, if any third-party patents were
held by a court of competent jurisdiction to cover aspects of our compositions, formulations, or methods of treatment, prevention, or use,
the holders of any such patents may be able to block our ability to develop and commercialize the applicable product unless we obtained
a license or until such patent expires or is finally determined to be invalid or unenforceable. In addition, defending such claims would
cause  us  to  incur  substantial  expenses  and  could  cause  us  to  pay  substantial  damages,  if  we  are  found  to  be  infringing  a  third  party’s
patent  rights.  These  damages  potentially  include  increased  damages  and  attorneys’  fees  if  we  are  found  to  have  infringed  such  rights
willfully. In order to avoid or settle potential claims with respect to any patent or other intellectual property rights of third parties, we
may choose or be required to seek a license from a third party and be required to pay license fees or royalties or both, which could be
substantial. These licenses may not be available on acceptable terms, or at all. Even if we were able to obtain a license, the rights may be
nonexclusive, which could result in our competitors gaining access to the same intellectual property. Ultimately, we could be prevented
from commercializing a drug candidate, or be forced, by court order or otherwise, to modify or cease some or all aspects of our business
operations,  if,  as  a  result  of  actual  or  threatened  patent  or  other  intellectual  property  claims,  we  are  unable  to  enter  into  licenses  on
acceptable  terms.  Further,  we  could  be  found  liable  for  significant  monetary  damages  as  a  result  of  claims  of  intellectual  property
infringement.

Defending against claims of patent infringement, misappropriation of trade secrets or other violations of intellectual property rights
could be costly and time-consuming, regardless of the outcome. Furthermore, because of the substantial amount of discovery required in
connection  with  intellectual  property  litigation,  there  is  a  risk  that  some  of  our  confidential  information  could  be  compromised  by
disclosure during this type of litigation. Thus, even if we were to ultimately prevail, or to settle at an early stage, such litigation could
burden us with substantial unanticipated costs.

Evolvement in the U.S. patent law could diminish the value of patents in general, thereby impairing our ability to protect our drug
candidates.

Changes in either the patent laws or interpretation of the patent laws in the United States could increase the uncertainties and costs
surrounding the prosecution of patent applications and the enforcement or defense of issued patents. Under the Leahy-Smith America
Invents Act enacted in 2011, the United States moved to a first-to-file system in early 2013, from the previous system under which the
first to make a claimed invention was entitled to the patent. Publications of discoveries in the scientific and academic literature often lag
behind  the  actual  discoveries,  and  patent  applications  in  the  United  States  and  other  jurisdictions  are  typically  not  published  until  18
months after filing, or in some cases not at all. Therefore, we cannot be certain that we were the first to file for patent protection on the
inventions claimed in our patents or pending patent applications.

Furthermore,  the  patent  positions  of  pharmaceutical  and  biotechnology  companies  are  generally  uncertain.  Recent  U.S.  Supreme
Court rulings have narrowed the scope of patent protection available in certain circumstances and weakened the rights of patent owners
in  certain  situations.  For  example,  in  Amgen  Inc.  v.  Sanofi,  598  U.S.  594,  143  S.  Ct.  1243  (2023),  the  U.S.  Supreme  Court  held  that
Amgen’s patent claims to a class of antibodies functionally defined by their ability to bind a particular antigen were invalid for lack of
enablement where the patent specification provided twenty-six exemplary antibodies, but the claimed class of antibodies covered a “vast
number” of additional antibodies not disclosed in the specification. The U.S. Supreme Court stated that if patent claims are directed to an
entire class of compositions of matter, then the patent specification must enable a person skilled in the art to make and use the entire class
of compositions. As such, we cannot guarantee that we will be able to obtain patents covering our drug candidates. This decision and
other  recent  rulings  have  created  uncertainty  with  respect  to  the  validity  and  enforceability  of  patents,  once  obtained.  Depending  on
future  actions  by  the  U.S.  Congress,  the  federal  courts  and  the  United  States  Patent  and  Trademark  Office,  the  laws  and  regulations
governing patents could change in unpredictable ways. In addition, the complexity and uncertainty of European patent laws have also
increased in recent years. Any of the foregoing could have a material adverse effect on our owned and in-licensed patent portfolio and
our ability to protect and enforce our intellectual property in the future.

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Issued patents covering one or more of our drug candidates could be found invalid or unenforceable if challenged in court.

Despite measures we take to obtain and maintain patent and other intellectual property rights with respect to our drug candidates, our
intellectual property rights could be challenged or invalidated. For example, if we were to initiate legal proceedings against a third party
to enforce a patent covering one of our drug candidates, the defendant could counterclaim that our patent is invalid and/or unenforceable.
Grounds for a validity challenge could be an alleged failure to meet any of several statutory requirements, for example, lack of novelty,
obviousness  or  non-enablement.  Grounds  for  an  unenforceability  assertion  could  be  an  allegation  that  someone  connected  with
prosecution of the patent withheld relevant information from the United States Patent and Trademark Office, or the applicable foreign
counterpart, or made a misleading statement, during prosecution. Although we believe that we have conducted our patent prosecution in
accordance  with  a  duty  of  candor  and  in  good  faith,  the  outcome  following  legal  assertions  of  invalidity  and  unenforceability  during
patent litigation is unpredictable. If a defendant were to prevail on a legal assertion of invalidity and/or unenforceability, we would lose
at least part, and perhaps all, of the patent protection on a drug candidate. Even if a defendant does not prevail on a legal assertion of
invalidity and/or unenforceability, our patent claims may be construed in a manner that would limit our ability to enforce such claims
against  the  defendant  and  others.  Even  if  we  establish  infringement,  the  court  may  decide  not  to  grant  an  injunction  against  further
infringing  activity  and  instead  award  only  monetary  damages,  which  may  not  be  an  adequate  remedy.  In  addition,  if  the  breadth  or
strength of protection provided by our patents is threatened, it could dissuade companies from collaborating with us to license, develop,
or commercialize our current or future drug candidates. Any loss of patent protection could have a material adverse impact on one or
more of our drug candidates and our business.

Enforcing our intellectual property rights against third parties may also cause such third parties to file other counterclaims against us,
which could be costly to defend and could require us to pay substantial damages, cease the sale of certain drugs or enter into a license
agreement and pay royalties (which may not be possible on commercially reasonable terms or at all).

Intellectual property litigation may lead to unfavorable publicity which may harm our reputation and cause the market price of our
ADSs to decline, and any unfavorable outcome from such litigation could limit our research and development activities and/or our
ability to commercialize our drug candidates.

During the course of any intellectual property litigation, there could be public announcements of the results of hearings, rulings on
motions, and other interim proceedings in the litigation. If securities analysts or investors regard these announcements as negative, the
perceived  value  of  our  drug  candidates,  future  drugs,  programs  or  intellectual  property  could  be  diminished.  Accordingly,  the  market
price of our ADSs may decline. Such announcements could also harm our reputation or the market for our drug candidates, which could
have a material adverse effect on our business.

In the event of intellectual property litigation, there can be no assurance that we would prevail, even if the case against us is weak or
flawed. If third parties successfully assert their intellectual property rights against us, prohibitions against using certain technologies, or
prohibitions against commercializing our drug candidates, could be imposed by a court or by a settlement agreement between us and a
plaintiff.  In  addition,  if  we  are  unsuccessful  in  defending  against  allegations  that  we  have  infringed,  misappropriated  or  otherwise
violated the patent or other intellectual property rights of others, we may be forced to pay substantial damage awards to the plaintiff.
Additionally,  we  may  be  required  to  obtain  a  license  from  the  intellectual  property  owner  in  order  to  continue  our  research  and
development programs or to commercialize any resulting product. It is possible that the necessary license will not be available to us on
commercially acceptable terms, or at all. This may not be technically or commercially feasible, may render our products less competitive,
or  may  delay  or  prevent  the  launch  of  our  products  to  the  market.  Any  of  the  foregoing  could  limit  our  research  and  development
activities, our ability to commercialize one or more drug candidates, or both.

Most  of  our  competitors  are  larger  than  we  are  and  have  substantially  greater  resources.  They  are,  therefore,  likely  to  be  able  to
sustain the costs of complex intellectual property litigation longer than we could. In addition, the uncertainties associated with litigation
could  have  a  material  adverse  effect  on  our  ability  to  raise  the  funds  necessary  to  conduct  our  clinical  trials,  continue  our  internal
research  programs,  in-license  needed  technology,  or  enter  into  strategic  partnerships  that  would  help  us  bring  our  drug  candidates  to
market.

In  addition,  any  future  intellectual  property  litigation,  interference  or  other  administrative  proceedings  will  result  in  additional
expense and distraction of our personnel. An adverse outcome in such litigation or proceedings may expose us or any future strategic
partners to loss of our proprietary position, expose us to significant liabilities, or require us to seek licenses that may not be available on
commercially acceptable terms, if at all, each of which could have a material adverse effect on our business.

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Changes in patent law could diminish the value of patents in general, thereby impairing our ability to protect our drug candidates.

As is the case with other biopharmaceutical companies, our success is heavily dependent on intellectual property, particularly patent
rights.  Obtaining  and  enforcing  patents  in  the  biopharmaceutical  industry  involves  both  technological  and  legal  complexity,  and  is
therefore  costly,  time-consuming,  and  inherently  uncertain.  In  addition,  the  United  States  has  enacted  and  implemented  wide-ranging
patent  reform  legislation.  The  U.S.  Supreme  Court  rulings  have  narrowed  the  scope  of  patent  protection  available  in  certain
circumstances  and  weakened  the  rights  of  patent  owners  in  certain  situations.  In  addition  to  increasing  uncertainty  with  regard  to  our
ability  to  obtain  patents  in  the  future,  this  combination  of  events  has  created  uncertainty  with  respect  to  the  value  of  patents  once
obtained, if any. Depending on decisions by the U.S. Congress, the federal courts and the United States Patent and Trademark Office, the
laws and regulations governing patents could change in unpredictable ways that would weaken our ability to obtain new patents or to
enforce our existing patents and patents that we might obtain in the future. For example, in Assoc. for Molecular Pathology v. Myriad
Genetics, Inc., the U.S. Supreme Court held that certain claims to naturally-occurring substances are not patentable. Although we do not
believe  that  our  currently  issued  patents  and  any  patents  that  may  issue  from  our  pending  patent  applications  directed  to  our  drug
candidates if issued in their currently pending forms, as well as patent rights licensed by us, will be found invalid based on this decision,
we cannot predict how future decisions by the courts, the U.S. Congress or the United States Patent and Trademark Office may impact
the value of our patent rights. There could be similar changes in the laws of foreign jurisdictions that may impact the value of our patent
rights or our other intellectual property rights.

If we are unable to protect the confidentiality of our trade secrets, our business and competitive position would be harmed. We also
may be subject to claims that our employees, consultants, or advisers have wrongfully used or disclosed alleged trade secrets of their
former employers or claims asserting ownership of what we regard as our own intellectual property.

In  addition  to  our  issued  patents  and  pending  patent  applications,  we  rely  on  trade  secret  and  confidential  information,  including
unpatented  know-how,  technology  and  other  proprietary  information,  to  maintain  our  competitive  position  and  to  protect  our  drug
candidates. We seek to protect this trade secret and confidential information, in part, by entering into non-disclosure and confidentiality
agreements  with  parties  that  have  access  to  them,  such  as  our  employees,  corporate  collaborators,  outside  scientific  collaborators,
sponsored  researchers,  contract  manufacturers,  consultants,  advisers  and  other  third  parties.  We  also  enter  into  confidentiality  and
invention  or  patent  assignment  agreements  with  our  employees  and  consultants.  However,  any  of  these  parties  may  breach  such
agreements  and  disclose  our  proprietary  information,  and  we  may  not  be  able  to  obtain  adequate  remedies  for  such  breaches.  For
example,  due  to  Tracon’s  wrong-doing  during  the  confidential  arbitration  process,  we  are  pursuing  a  trade  secret  misappropriation
lawsuit  case  against  a  competitor  of  us  and  seeking  remedies,  including  potentially  substantial  monetary  damages.  Regardless  of  the
outcome, litigations or arbitrations can have an adverse impact on us because of defense and settlement costs, diversion of management
resources and other factors. Enforcing a claim that a party illegally disclosed or misappropriated a trade secret can be difficult, expensive
and  time-consuming,  and  the  outcome  is  unpredictable.  If  any  of  our  trade  secrets  were  to  be  lawfully  obtained  or  independently
developed by a competitor or other third party, we would have no right to prevent them from using that technology or information to
compete with us and our competitive position would be harmed.

Furthermore,  many  of  our  employees,  consultants,  and  advisers,  including  our  senior  management,  were  previously  employed  at
other  biotechnology  or  pharmaceutical  companies,  including  our  competitors  or  potential  competitors.  Some  of  these  employees,
consultants,  and  advisers,  including  members  of  our  senior  management,  executed  proprietary  rights,  non-disclosure  and  non-
competition  agreements  in  connection  with  such  previous  employment.  Although  we  try  to  ensure  that  our  employees  do  not  use  the
proprietary information or know-how of others in their work for us, we may be subject to claims that we or these employees have used or
disclosed intellectual property, including trade secrets or other proprietary information, of any such individual’s former employer. We are
not aware of any threatened or pending claims related to these matters or concerning the agreements with our senior management, but in
the  future  litigation  may  be  necessary  to  defend  against  such  claims.  If  we  fail  in  defending  any  such  claims,  in  addition  to  paying
monetary damages, we may lose valuable intellectual property rights or personnel. Even if we are successful in defending against such
claims,  litigation  could  result  in  substantial  costs  and  be  a  distraction  to  management.  In  addition,  while  we  typically  require  our
employees, consultants and contractors who may be involved in the development of intellectual property to execute agreements assigning
such intellectual property to us, we may be unsuccessful in executing such an agreement with each party who in fact develops intellectual
property  that  we  regard  as  our  own,  and  furthermore,  the  assignment  of  intellectual  property  rights  may  not  be  self-executing,  or  the
assignment agreements may be breached, each of which may result in claims by or against us related to the ownership of such intellectual
property.  If  we  fail  in  prosecuting  or  defending  any  such  claims,  in  addition  to  paying  monetary  damages,  we  may  lose  valuable
intellectual  property  rights.  Even  if  we  are  successful  in  prosecuting  or  defending  against  such  claims,  litigation  could  result  in
substantial  costs,  be  a  distraction  to  our  management  and  scientific  personnel  and  have  a  material  adverse  effect  on  our  business,
financial condition, results of operations and prospects.

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We  may  not  be  successful  in  obtaining  or  maintaining  necessary  rights  for  our  development  pipeline  through  acquisitions  and  in-
licenses.

Because our programs may involve additional drug candidates that may require the use of proprietary rights held by third parties, the
growth of our business may depend in part on our ability to acquire and maintain licenses or other rights to use these proprietary rights.
We may be unable to acquire or in-license any compositions, methods of use, or other intellectual property rights from third parties that
we  identify.  The  licensing  and  acquisition  of  third-party  intellectual  property  rights  is  a  competitive  area,  and  a  number  of  more
established  companies  are  also  pursuing  strategies  to  license  or  acquire  third-party  intellectual  property  rights  that  we  may  consider
attractive  or  necessary.  These  established  companies  may  have  a  competitive  advantage  over  us  due  to  their  size,  cash  resources  and
greater  clinical  development  and  commercialization  capabilities.  In  addition,  companies  that  perceive  us  to  be  a  competitor  may  be
unwilling to assign or license rights to us. We also may be unable to license or acquire third-party intellectual property rights on terms
that would allow us to make an appropriate return on our investment or at all. If we are unable to successfully obtain rights to required
third-party  intellectual  property  rights  or  maintain  the  existing  intellectual  property  rights  we  have,  we  may  have  to  abandon
development of relevant programs or drug candidates, which could have a material adverse effect on our business, financial condition,
results of operations and prospects for growth.

Our rights to develop and commercialize our drug candidates are subject, in part, to the terms and conditions of licenses granted to us
by others.

We rely on licenses to certain patent rights and other intellectual property from third parties that are important or necessary to the
development of our drug candidates. These and other licenses may not provide exclusive rights to use such intellectual property in all
relevant fields of use and in all territories in which we may wish to develop or commercialize our drug products. As a result, we may not
be  able  to  prevent  competitors  from  developing  and  commercializing  competitive  drug  products  in  territories  included  in  all  of  our
licenses.

We  may  not  have  the  right  to  control  the  preparation,  filing,  prosecution,  maintenance,  enforcement,  and  defense  of  patents  and
patent applications covering the drug candidates that we license from third parties. Moreover, we have not had and do not have primary
control over these activities for certain of our patents or patent applications and other intellectual property rights that we jointly own with
certain of our licensors and sub-licensors. Therefore, we cannot be certain that these patents and patent applications will be prepared,
filed, prosecuted, maintained, enforced, and defended in a manner consistent with the best interests of our business. If our licensors fail
to prosecute, maintain, enforce and defend such patents, or lose rights to those patents or patent applications, the rights we have licensed
may be reduced or eliminated, and our right to develop and commercialize any of our drugs that are subject of such licensed rights could
be adversely affected.

Pursuant  to  the  terms  of  the  license  agreements  with  some  of  our  licensors,  the  licensors  may  have  the  first  right  to  control
enforcement of our licensed patents or defense of any claims asserting the invalidity or unenforceability of these patents. Even if we are
permitted  to  pursue  the  enforcement  or  defense  of  our  licensed  patents,  we  will  require  the  cooperation  of  our  licensors  and  any
applicable patent owners and such cooperation may not be provided to us. We cannot be certain that our licensors will allocate sufficient
resources or prioritize their or our enforcement of such patents or defense of such claims to protect our interests in the licensed patents.
Even  if  we  are  not  a  party  to  these  legal  actions,  an  adverse  outcome  could  harm  our  business  because  it  might  prevent  us  from
continuing to license intellectual property that we may need to operate our business. If we lose any of our licensed intellectual property,
our right to develop and commercialize any of our drug candidates that are subject of such licensed rights could be adversely affected.

In  addition,  our  licensors  may  have  relied  on  third-party  consultants  or  collaborators  or  on  funds  from  third  parties  such  that  our
licensors are not the sole and exclusive owners of the patents we in-license. This could have a material adverse effect on our competitive
position, business, financial conditions, results of operations, and prospects.

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In  spite  of  our  best  efforts,  our  licensors  might  conclude  that  we  have  materially  breached  our  license  agreements  and  might
therefore terminate the license agreements, thereby removing our ability to develop and commercialize drug products covered by these
license  agreements.  If  such  licenses  are  terminated,  we  may  be  required  seek  alternative  in-license  arrangements,  which  may  not  be
available on commercially reasonable terms or at all, or may be non-exclusive. If these in-licenses are terminated, or if the underlying
patents fail to provide the intended exclusivity, we may need to modify or cease the development, manufacture, and commercialization of
one  or  more  of  our  drug  candidates  and  competitors  would  have  the  freedom  to  seek  regulatory  approval  of,  and  to  market,  products
identical  to  ours.  In  addition,  we  may  seek  to  obtain  additional  licenses  from  our  licensors  and,  in  connection  with  obtaining  such
licenses, we may agree to amend our existing licenses in a manner that may be more favorable to the licensors, including by agreeing to
terms that could enable third parties (potentially including our competitors) to receive licenses to a portion of the intellectual property
that is subject to our existing licenses. Any of these events could have a material adverse effect on our competitive position, business,
financial conditions, results of operations, and prospects.

If we fail to comply with our obligations in the agreements under which we license intellectual property rights from third parties or
otherwise experience disruptions to our business relationships with our licensors, we could be required to pay monetary damages or
could lose license rights that are important to our business.

Our business relies partially on our ability to develop and commercialize drug candidates we have licensed from third parties, and
we have entered into license agreements with third parties providing us with rights to various third-party intellectual property, including
rights  in  patents  and  patent  applications.  Our  licenses  may  not  encumber  all  intellectual  property  rights  owned  or  controlled  by  the
affiliates of our licensors and relevant to our drug candidates, and we may need to obtain additional licenses from our existing licensors
and others to advance our research or allow commercialization of drug candidates we may develop. In such case, we may need to obtain
additional licenses which may not be available on an exclusive basis, on commercially reasonable terms or at a reasonable cost, if at all.
In  that  event,  we  may  be  required  to  expend  significant  time  and  resources  to  redesign  our  drug  candidates  or  the  methods  for
manufacturing  them  or  to  develop  or  license  replacement  technology,  all  of  which  may  not  be  feasible  on  a  technical  or  commercial
basis.  If  we  are  unable  to  do  so,  we  may  be  unable  to  develop  or  commercialize  the  affected  drug  candidates,  which  could  harm  our
business, financial condition, results of operations, and prospects significantly.

In addition, if our licensors breach the license agreements, we may not be able to enforce such agreements against our licensors’
parent  entity  or  affiliates.  Under  each  of  our  license  and  intellectual  property-related  agreements,  in  exchange  for  licensing  or
sublicensing us the right to develop and commercialize the applicable drug candidates, our licensors will be eligible to receive from us
milestone payments, tiered royalties from commercial sales of such drug candidates, assuming applicable approvals from government
authorities are obtained, or other payments. Our license and intellectual property-related agreements also require us to comply with other
obligations including development and diligence obligations, providing certain information regarding our activities with respect to such
drug candidates and/or maintaining the confidentiality of information we receive from our licensors.

If we fail to comply with our obligations under our current or future license agreements, our counterparties may have the right to
terminate  these  agreements  and,  upon  the  effective  date  of  such  termination,  have  the  right  to  re-obtain  the  licensed  and  sub-licensed
technology and intellectual property. If any of our licensors terminate any of our licenses, we might not be able to develop, manufacture
or market any drug or drug candidate that is covered by the licenses provided for under these agreements and other third parties may be
able to market drug candidates similar or identical to ours. In such case, we may have to negotiate new or reinstated agreements with less
favorable terms, and may be required to provide a grant back license to the licensors under our own intellectual property with respect to
the  terminated  products.  We  may  also  face  claims  for  monetary  damages  or  other  penalties  under  these  agreements.  While  we  would
expect to exercise all rights and remedies available to us, including seeking to cure any breach by us, and otherwise seek to preserve our
rights  under  the  intellectual  property  rights  licensed  and  sublicensed  to  us,  we  may  not  be  able  to  do  so  in  a  timely  manner,  at  an
acceptable  cost  or  at  all.  In  particular,  some  of  the  milestone  payments  are  payable  upon  our  drug  candidates  reaching  development
milestones before we have commercialized, or received any revenue from, sales of such drug candidate, and we cannot guarantee that we
will have sufficient resources to make such milestone payments. Any uncured, material breach under the license agreements could result
in our loss of exclusive rights and may lead to a complete termination of our rights to the applicable drug candidate. Any of the foregoing
could have a material adverse effect on our business, financial conditions, results of operations, and prospects.

It is possible that we may be unable to obtain any additional licenses at a reasonable cost or on reasonable terms, if at all. Certain
license agreements may also require us to meet development thresholds to maintain the license, including establishing a set timeline for
developing and commercializing products. Disputes may arise regarding intellectual property subject to a license agreement, including:

● the scope of rights granted under the license agreement and other interpretation-related issues;

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● the extent to which our technology and processes infringe, misappropriate or violate intellectual property of the licensor that is

not subject to the license agreement;

● the sublicensing of patent and other rights under our collaborative development relationships;

● our diligence obligations under the license agreement and what activities satisfy those diligence obligations;

● the inventorship and ownership of inventions and know-how resulting from the joint creation or use of intellectual property by

our licensors and us and our partners; and

● the priority of invention of patented technology.

In addition, the agreements under which we license intellectual property or technology from third parties are complex, and certain
provisions in such agreements may be susceptible to multiple interpretations. The resolution of any contract interpretation disagreement
that may arise could narrow what we believe to be the scope of our rights to the intellectual property or technology, or increase what we
believe  to  be  our  financial  or  other  obligations  under  the  agreements,  either  of  which  could  have  a  material  adverse  effect  on  our
business, financial condition, results of operations, and prospects. Moreover, if disputes over intellectual property that we have licensed
prevent  or  impair  our  ability  to  maintain  our  current  licensing  arrangements  on  commercially  acceptable  terms,  we  may  be  unable  to
successfully  develop  and  commercialize  the  affected  drug  candidates,  which  could  have  a  material  adverse  effect  on  our  business,
financial condition, results of operations and prospects.

Intellectual property rights do not necessarily protect us from all potential threats to our competitive advantage.

The  degree  of  future  protection  afforded  by  our  intellectual  property  rights  is  uncertain  because  intellectual  property  rights  have
limitations, and may not adequately protect our business, or permit us to maintain our competitive advantage. The following examples
are illustrative:

● others may be able to make compounds that are similar to our drug candidates but that are not covered by the claims of the

patents that we own or have exclusively licensed;

● we might not have been the first to make the inventions covered by the issued patents or pending patent applications that we
own or may in the future exclusively license, which could result in the patents applied for not being issued or being invalidated
after issuing;

● we might not have been the first to file patent applications covering certain of our inventions, which could result in the patents

applied for not being issued or being invalidated after issuing;

● others may independently develop similar or alternative technologies or duplicate any of our technologies without infringing

our intellectual property rights;

● it is possible that our pending patent applications will not lead to issued patents;

● issued patents that we own or have exclusively licensed may not provide us with any competitive advantages, or may be held

invalid or unenforceable, as a result of legal challenges by our competitors or other third parties;

● we  may  obtain  patents  for  certain  compounds  many  years  before  we  receive  regulatory  approval  for  drugs  containing  such
compounds, and because patents have a limited life, which may begin to run prior to the commercial sale of the related drugs,
the commercial value of our patents may be limited;

● our competitors might conduct research and development activities in countries where we do not have patent rights and then use

the information learned from such activities to develop competitive drugs for commercialization in our major markets;

● we may fail to develop additional proprietary technologies that are patentable;

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● we may fail to apply for or obtain adequate intellectual property protection in all the jurisdictions in which we operate;

● third parties may gain unauthorized access to our intellectual property due to potential lapses in our information systems; and

● the patents of others may have an adverse effect on our business, for example by preventing us from commercializing one or

more of our drug candidates for one or more indications.

Any  of  the  aforementioned  threats  to  our  competitive  advantage  could  have  a  material  adverse  effect  on  our  business  and  future

prospects.

If our trademarks and trade names are not adequately protected, we may not be able to build name recognition in our markets of
interest and our competitive position may be adversely affected.

We  own  registered  trademarks.  We  may  not  be  able  to  obtain  trademark  protection  in  territories  that  we  consider  of  significant
importance to us. In addition, any of our trademarks or trade names, whether registered or unregistered, may be challenged, opposed,
infringed, cancelled, circumvented or declared generic, or determined to be infringing on other marks, as applicable. We may not be able
to protect our rights to these trademarks and trade names, which we will need to build name recognition by potential collaborators or
customers in our markets of interest. Over the long term, if we are unable to establish name recognition based on our trademarks and
trade names, we may not be able to compete effectively and our business may be adversely affected.

Terms of our future patents may not be sufficient to effectively protect our drug candidates and business.

In many countries where we file applications for patents, the term of an issued patent is generally 20 years from the earliest claimed
filing date of a non-provisional patent application in the applicable country. Although various extensions may be available, the life of a
patent  and  the  protection  it  affords  are  limited.  Even  if  we  obtain  patents  covering  our  drug  candidates,  we  may  still  be  open  to
competition from other companies, as well as generic medications once the patent life has expired for a drug.

If  we  are  unable  to  obtain  patent  term  extensions  or  if  such  extensions  are  less  than  requested  for,  our  competitors  may  obtain
approval  of  competing  products  following  our  patent  expirations  and  our  business,  financial  condition,  results  of  operations  and
prospects could be materially harmed as a result.

If we do not obtain additional protection under the Hatch-Waxman Amendments and similar legislation in other countries extending
the terms of our patents, if issued, relating to our drug candidates, our business may be materially harmed.

Depending upon the timing, duration and specifics of FDA regulatory approval for our drug candidates, one or more of our U.S.
patents, if issued, may be eligible for limited patent term restoration under the Drug Price Competition and Patent Term Restoration Act
of  1984,  or  the  Hatch-Waxman  Amendments.  The  Hatch-Waxman  Amendments  permit  a  patent  term  extension  of  up  to  five  years  as
compensation for patent term lost during drug development and the FDA regulatory review process. Patent term extensions, however,
cannot extend the remaining term of a patent beyond a total of 14 years from the date of drug approval by the FDA, and only one patent
can be extended for a particular drug.

The application for patent term extension is subject to approval by the United States Patent and Trademark Office, in conjunction
with the FDA. We may not be granted an extension because of, for example, failing to apply within applicable deadlines, failing to apply
prior to expiration of patents or otherwise failing to satisfy applicable requirements. Moreover, the applicable time period or the scope of
patent protection afforded could be less than we request. If we are unable to obtain a patent term extension for a given patent or the term
of  any  such  extension  is  less  than  we  request,  the  period  during  which  we  will  have  the  right  to  exclusively  market  our  drug  will  be
shortened and our competitors may obtain earlier approval of competing drugs, and our ability to generate revenues could be materially
adversely affected.

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Risks Related to Our Industry, Business and Operations

We face significant risks related to the transition of our business focus to the U.S. market and our business and prospects may be
materially and adversely affected.

With  the  divestiture  of  the  Greater  China  assets  and  business  operations,  our  business  has  been  focused  on  the  development  and
commercialization of drug candidates with ex-Greater China rights. Following the completion of the divestiture, we ceased to own the
Greater  China  portfolio  and  the  number  of  drug  candidates  in  our  pipeline  was  significantly  reduced.  Moreover,  we  have  recently
experienced  significant  changes  in  our  management.  See  “—Our  future  success  depends  on  our  ability  to  attract,  retain  and  motivate
senior management and qualified scientific employees.”

As we are going through the transition period, there is no guarantee that we may successfully advance our existing drug candidates
in  our  pipeline  towards  clinical  development  or  successfully  executing  our  business  strategies.  We  may  also  in  the  future  adjust  our
business focus or seek other business opportunities. Any such changes may have a material adverse impact on our business operations,
financial position and our reputation.

Our future success depends on our ability to attract, retain and motivate senior management and qualified scientific employees.

We are highly dependent on the expertise of the members of our research and development team, as well as the principal members of
our  management.  We  have  entered  into  employment  agreements  with  our  executive  officers,  but  each  of  them  may  terminate  their
employment  with  us  at  any  time  with  prior  written  notice.  In  addition,  we  currently  do  not  have  “key-man”  insurance  for  any  of  our
executive officers or other key personnel.

Recruiting,  retaining  and  motivating  qualified  management,  scientific,  clinical,  manufacturing  and  sales  and  marketing  personnel
will  also  be  critical  to  our  success.  We  have  recently  experienced  significant  changes  in  our  management  and  board  of  directors.  For
example, in June 2023, Raj Kannan joined us as our Chief Executive Officer. In February 2024, Andrew Zhu stepped down from the
board of directors and resigned from his executive position with our company, and in the same month, Joseph Skelton joined us as our
Chief Financial Officer. The loss of the services of our executive officers or other key employees could impede the achievement of our
research, development and commercialization objectives and seriously harm our ability to successfully implement our business strategy.
Further, replacing executive officers and key employees may be difficult and may take an extended period of time because of the limited
number of individuals in our industry with the breadth of skills and experience required to successfully develop, gain regulatory approval
of and commercialize drugs. Competition to hire from this limited pool is intense, and we may be unable to hire, train, retain or motivate
these key personnel on acceptable terms given the competition among numerous biopharmaceutical companies for similar personnel. We
also experience competition for the hiring of scientific and clinical personnel from universities and research institutions. In addition, our
management  may  need  to  devote  additional  time  to  compliance  initiatives  stemming  from  our  status  as  a  public  company,  potentially
necessitating the recruitment of more management personnel. These changes in our management may be disruptive to our business and,
during  the  transition  period,  there  may  be  uncertainty  among  investors,  employees  and  others  concerning  our  future  direction  and
performance.  Any  such  disruption  or  uncertainty  could  have  a  material  adverse  effect  on  our  business,  financial  condition,  results  of
operations and our reputation.

We  will  need  to  increase  the  size  and  capabilities  of  our  organization,  and  we  may  experience  difficulties  in  managing  our
development.

Although we expect to experience a sizable decrease in the number of our employees and consultants and the scope of our operations
in the short term, particularly in the areas of clinical development, regulatory affairs and business development, in connection with the
divestiture  of  the  Greater  China  assets  and  business  operations,  we  expect  to  experience  growth  in  the  size  and  capabilities  of  our
company in the long term. To manage our future development, we must continue to implement and improve our managerial, operational
and financial systems, expand our facilities and continue to recruit and train additional qualified personnel. Due to our limited financial
resources, we may not be able to effectively manage our operations or recruit and train additional qualified personnel. The expansion of
our  operations  may  lead  to  significant  costs  and  may  divert  our  management  and  business  development  resources.  Any  inability  to
manage  growth  could  delay  the  execution  of  our  business  plans  or  disrupt  our  operations,  and  have  a  material  adverse  effect  on  our
business.

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The data and information that we gather in our research and development process could be inaccurate or incomplete, which could
harm our business, reputation, financial condition and results of operations.

We  collect,  aggregate,  process,  and  analyze  data  and  information  from  our  pre-clinical  studies,  manufacturing  technology
development  programs  and  clinical  programs.  We  also  engage  in  substantial  information  gathering  following  the  identification  of  a
promising drug candidate. Because data in the healthcare industry is fragmented in origin, inconsistent in format, and often incomplete,
the  overall  quality  of  data  collected  or  accessed  in  the  healthcare  industry  is  often  subject  to  challenge,  the  degree  or  amount  of  data
which is knowingly or unknowingly absent or omitted can be material, and we often discover data issues and errors when monitoring and
auditing  the  quality  of  our  data.  If  we  make  mistakes  in  the  capture,  input,  or  analysis  of  these  data,  our  ability  to  advance  the
development of our drug candidates may be materially harmed and our business, prospects and reputation may suffer.

We also engage in the procurement of regulatory approvals necessary for the development and commercialization of our products
under development, for which we manage and submit data to governmental entities. These processes and submissions are governed by
complex  data  processing  and  validation  policies  and  regulations.  Notwithstanding  such  policies  and  regulations,  interim,  top-line  or
preliminary  data  from  our  clinical  trials  that  we  announce  or  publish  from  time  to  time  may  change  as  more  patient  data  become
available and are subject to audit and verification procedures that could result in material changes in the final data, in which case we may
be  exposed  to  liability  to  a  customer,  court  or  government  agency  that  concludes  that  our  storage,  handling,  submission,  delivery,  or
display of health information or other data was wrongful or erroneous.

Although we maintain insurance coverage for clinical trials, this coverage may prove to be inadequate or could cease to be available
to  us  on  acceptable  terms,  if  at  all.  Even  unsuccessful  claims  could  result  in  substantial  costs  and  diversion  of  management  time,
attention, and resources. A claim brought against us that is uninsured or under-insured could harm our business, financial condition and
results of operations.

In addition, we rely on CROs, our partners and other third parties to monitor and manage data for some of our ongoing pre-clinical
and clinical programs and control only certain aspects of their activities. If any of our CROs, our partners or other third parties do not
perform to our standards in terms of data accuracy or completeness, data from those pre-clinical and clinical trials may be compromised
as a result, and our reliance on these parties does not relieve us of our regulatory responsibilities. For a detailed discussion, see “—Risks
Related to Our Reliance on Third Parties—As we rely on third parties to conduct our pre-clinical studies and clinical trials, if we lose our
relationships with these third parties or if they do not successfully carry out their contractual duties or meet expected deadlines, we may
not be able to obtain regulatory approval for or commercialize our drug candidates and our business could be substantially harmed.”

We may be subject to liability lawsuits arising from our clinical trials.

We  currently  carry  liability  insurance  covering  our  clinical  trials.  Although  we  maintain  such  insurance,  any  claim  that  may  be
brought against us could result in a court judgment or settlement in an amount that is not covered, in whole or in part, by our insurance or
which is in excess of the limits of our insurance coverage. Our insurance policies also contain various exclusions, and we may be subject
to  particular  liability  claims  for  which  we  have  no  coverage.  We  will  have  to  pay  any  amount  awarded  by  a  court  or  negotiated  in  a
settlement  that  exceed  our  coverage  limitations  or  that  are  not  covered  by  our  insurance,  and  we  may  not  have,  or  be  able  to  obtain,
sufficient  capital  to  pay  such  amounts.  In  addition,  if  we  cannot  successfully  defend  ourselves  against  such  claims,  we  may  incur
substantial liabilities and be required to suspend or delay our ongoing clinical trials. Even a successful defense would require significant
financial and management resources.

Regardless of the merits or eventual outcome, liability claims may result in significant negative consequences to our business and

prospects, including, but not limited to:

● decreased demand for our drug candidates or any resulting products;

● injury to our reputation;

● withdrawal of other clinical trial participants;

● costs to defend the related litigation;

● a diversion of our management’s time and resources;

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● substantial monetary awards to trial participants or patients;

● inability to commercialize our drug candidates; and

● a decline in the market price of our ADSs.

We have limited insurance coverage, and any claims beyond our insurance coverage may result in our incurring substantial costs and
a diversion of resources.

We maintain insurance policies that are required under PRC laws and regulations as well as insurance based on our assessment of
our  operational  needs  and  industry  practice.  We  also  maintain  liability  insurance  covering  our  clinical  trials.  In  line  with  industry
practice, we have elected not to maintain certain types of insurances, such as business interruption insurance or key-man insurance. Our
insurance coverage may be insufficient to cover any claim for product liability, damage to our fixed assets or employee injuries. Any
liability or damage to, or caused by, our facilities or our personnel beyond our insurance coverage may result in our incurring substantial
costs and a diversion of resources.

Disruptions in the financial markets and economic conditions could affect our ability to raise capital.

Global economies could suffer dramatic downturns as a result of a deterioration in the credit markets and related financial crisis as
well  as  a  variety  of  other  factors  including,  extreme  volatility  in  security  prices,  severely  diminished  liquidity  and  credit  availability,
ratings downgrades of certain investments and declining valuations of others. In the past, governments have taken unprecedented actions
in an attempt to address and rectify these extreme market and economic conditions by providing liquidity and stability to the financial
markets. If these actions are not successful, the return of adverse economic conditions may cause a significant impact on our ability to
raise capital, if needed, on a timely basis and on acceptable terms, or at all.

In addition, there is considerable uncertainty over the long-term effects of the expansionary monetary and fiscal policies adopted by
the central banks and financial authorities of some of the world’s leading economies, including the United States and China. There have
been concerns over unrest and terrorist threats in the Middle East, Europe and Africa and over the conflicts involving Ukraine, Syria,
North Korea and the Gaza Strip. There have also been concerns on the relationship among China and other Asian countries, which may
result in or intensify potential conflicts in relation to territorial disputes or the trade related disputes between the United States and China.
It  is  unclear  whether  these  challenges  and  uncertainties  will  be  contained  or  resolved,  and  what  effects  they  may  have  on  the  global
political and economic conditions in the long term.

Our employees, independent contractors, consultants, commercial partners and vendors may engage in misconduct or other improper
activities, including non-compliance with regulatory standards and requirements.

We are exposed to the risk of fraud, misconduct or other illegal activities by our employees, independent contractors, consultants,

commercial partners and vendors. Misconduct by these parties could include intentional, reckless and negligent conduct that fails to:

● comply with the laws of the FDA and other comparable regulatory authorities;

● provide true, complete and accurate information to the FDA and other comparable regulatory authorities;

● comply with manufacturing standards we have established;

● comply with healthcare fraud and abuse laws in the United States and similar fraudulent misconduct laws in other applicable

jurisdictions; or

● report financial information or data accurately or to disclose unauthorized activities to us.

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If we obtain approval of any of our drug candidates and begin commercializing those drugs in the United States or other applicable
jurisdictions,  our  potential  exposure  under  the  laws  of  such  jurisdictions  will  increase  significantly  and  our  costs  associated  with
compliance with such laws are also likely to increase. These laws may impact, among other things, our current activities with principal
investigators  and  research  patients,  as  well  as  future  sales,  marketing  and  education  programs.  In  particular,  the  promotion,  sales  and
marketing of healthcare items and services, as well as certain business arrangements in the healthcare industry, are subject to extensive
laws designed to prevent fraud, kickbacks, self-dealing and other abusive practices. These laws and regulations may restrict or prohibit a
wide range of pricing, discounting, marketing and promotion, structuring and commission(s), certain customer incentive programs and
other  business  arrangements  generally.  Activities  subject  to  these  laws  also  involve  the  improper  use  of  information  obtained  in  the
course of patient recruitment for clinical trials, which could result in regulatory sanctions and cause serious harm to our reputation.

It is not always possible to identify and deter misconduct by employees and other parties, and the precautions we take to detect and
prevent this activity may not be effective in controlling unknown or unmanaged risks or losses or in protecting us from governmental
investigations  or  other  actions  or  lawsuits  stemming  from  a  failure  to  comply  with  these  laws  or  regulations.  If  any  such  actions  are
instituted  against  us,  and  we  are  not  successful  in  defending  ourselves  or  asserting  our  rights,  those  actions  could  have  a  significant
impact on our business, including the imposition of significant fines or other sanctions.

If  we  engage  in  future  acquisitions  or  strategic  partnerships,  this  may  increase  our  capital  requirements,  dilute  the  value  of  your
investment in our ADSs, cause us to incur debt or assume contingent liabilities, and subject us to other risks.

We  may  evaluate  various  acquisitions  and  strategic  partnerships,  including  licensing  or  acquiring  complementary  products,
intellectual  property  rights,  technologies  or  businesses.  Any  potential  acquisition  or  strategic  partnership  may  entail  numerous  risks,
including, but not limited to:

● increased operating expenses and cash requirements;

● the assumption of additional indebtedness or contingent liabilities;

● the issuance of our equity securities;

● assimilation  of  operations,  intellectual  property  and  products  of  an  acquired  company,  including  difficulties  associated  with

integrating new personnel;

● the  diversion  of  our  management’s  attention  from  our  existing  product  programs  and  initiatives  in  pursuing  such  a  strategic

merger or acquisition;

● retention of key employees, the loss of key personnel, and uncertainties in our ability to maintain key business relationships;

● risks and uncertainties associated with the assimilation of operations, corporate culture and personnel of the acquired business;

● risks and uncertainties associated with the other party to such a transaction, including the prospects of that party and its existing

drugs or drug candidates and regulatory approvals;

● our inability to generate revenue from acquired technology and/or products sufficient to meet our objectives in undertaking the

acquisition or even to offset the associated acquisition and maintenance costs; and

● changes in accounting principles relating to recognition and measurement of our investments that may have a significant impact

on our financial results.

In addition, if we undertake acquisitions, we may issue dilutive securities, assume or incur debt obligations, incur large one-time
expenses  and  acquire  intangible  assets  that  could  result  in  significant  future  amortization  expense.  Moreover,  we  may  not  be  able  to
locate suitable acquisition opportunities and this inability could impair our ability to develop or obtain access to technology or products
that may be important to the development of our business.

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If  we  fail  to  comply  with  applicable  anti-bribery  laws,  our  reputation  may  be  harmed  and  we  could  be  subject  to  penalties  and
significant expenses that have a material adverse effect on our business, financial condition and results of operations.

We  are  subject  to  the  Foreign  Corrupt  Practices  Act,  which  generally  prohibits  us  from  making  improper  payments  to  non-U.S.
officials for the purpose of obtaining or retaining business. Although we have policies and procedures designed to ensure that we, our
employees and our agents comply with applicable anti-bribery laws, there is no assurance that such policies or procedures will prevent
our agents, employees and intermediaries from engaging in bribery activities. Failure to comply with anti-bribery laws could disrupt our
business  and  lead  to  severe  criminal  and  civil  penalties,  including  imprisonment,  criminal  and  civil  fines,  loss  of  our  export  licenses,
suspension  of  our  ability  to  do  business  with  the  government,  denial  of  government  reimbursement  for  our  products  and/or  exclusion
from participation in government healthcare programs. Other remedial measures could include further changes or enhancements to our
procedures,  policies,  and  controls  and  potential  personnel  changes  and/or  disciplinary  actions,  any  of  which  could  have  a  material
adverse  effect  on  our  business,  financial  condition,  results  of  operations  and  liquidity.  We  could  also  be  adversely  affected  by  any
allegation that we violated such laws.

Any  failure  to  comply  with  applicable  regulations  and  industry  standards  or  obtain  various  licenses  and  permits  could  harm  our
reputation and our business, results of operations and prospects.

A  number  of  governmental  agencies  or  industry  regulatory  bodies  in  the  United  States  and  other  applicable  jurisdictions  impose
strict rules, regulations and industry standards governing biopharmaceutical research and development activities, which apply to us. Our
or  our  CROs’  failure  to  comply  with  such  regulations  could  result  in  the  termination  of  ongoing  research,  administrative  penalties
imposed  by  regulatory  bodies  or  the  disqualification  of  data  for  submission  to  regulatory  authorities.  This  could  harm  our  business,
reputation,  prospects  for  future  work  and  results  of  operations.  For  example,  if  we  or  our  CROs  were  to  treat  research  animals
inhumanely or in violation of international standards set out by the Association for Assessment and Accreditation of Laboratory Animal
Care, it could revoke any such accreditation and the accuracy of our animal research data could be questioned.

If we or our CROs or other contractors or consultants fail to comply with environmental, health and safety laws and regulations, we
could become subject to fines or penalties or incur costs that could have a material adverse effect on the success of our business.

We and third parties, such as our CROs or other contractors or consultants, are subject to numerous environmental, health and safety
laws  and  regulations,  including  those  governing  laboratory  procedures  and  the  handling,  use,  storage,  treatment  and  disposal  of
hazardous  materials  and  wastes.  Our  operations  involve  the  use  of  hazardous  and  flammable  materials,  including  chemicals  and
radioactive and biological materials. Our operations also produce hazardous waste products. We generally contract with third parties for
the disposal of these materials and wastes. We cannot eliminate the risk of contamination or injury from these materials. In the event of
contamination  or  injury  resulting  from  our  use  of  hazardous  materials,  we  could  be  held  liable  for  any  resulting  damages,  and  any
liability could exceed our resources. We also could incur significant costs associated with civil or criminal fines and penalties.

Although  we  maintain  workers’  compensation  insurance  to  cover  us  for  costs  and  expenses  we  may  incur  due  to  injuries  to  our
employees  resulting  from  the  use  of  or  exposure  to  hazardous  materials,  this  insurance  may  not  provide  adequate  coverage  against
potential  liabilities.  We  do  not  maintain  insurance  for  environmental  liability  or  toxic  tort  claims  that  may  be  asserted  against  us  in
connection with our storage, use or disposal of biological, hazardous or radioactive materials.

In addition, we may be required to incur substantial costs to comply with current or future environmental, health and safety laws and
regulations. These current or future laws and regulations may impair our research, development or production efforts. Failure to comply
with these laws and regulations also may result in substantial fines, penalties or other sanctions.

If we face allegations of non-compliance with laws and encounter sanctions, our reputation, revenues and liquidity may suffer, and
our drug candidates and future drugs could be subject to restrictions or withdrawal from the market.

Any government investigation of alleged violations of laws could require us to expend significant time and resources in response,
and  could  generate  negative  publicity.  Any  failure  to  comply  with  ongoing  regulatory  requirements  may  significantly  and  adversely
affect our ability to commercialize and generate revenues from our drugs. If regulatory sanctions are applied or if regulatory approval is
withdrawn,  the  value  of  our  company  and  our  operating  results  will  be  adversely  affected.  Additionally,  if  we  are  unable  to  generate
revenues  from  our  product  sales,  our  potential  for  achieving  profitability  will  be  diminished  and  the  capital  necessary  to  fund  our
operations will be increased.

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Our internal computer systems, or those used by our CROs or other contractors or consultants, may fail or suffer security breaches.

Although to our knowledge we have not experienced any material system failure or security breach to date, if such an event were to
occur and cause interruptions in our operations, it could result in a material disruption of our development programs and our business
operations.  For  example,  the  loss  of  clinical  trial  data  from  completed  or  future  clinical  trials  could  result  in  delays  in  our  regulatory
approval  efforts  and  significantly  increase  our  costs  to  recover  or  reproduce  the  data.  Likewise,  we  partially  rely  on  our  third-party
research institution collaborators for research and development of our drug candidates and other third parties for the manufacture of our
drug candidates and to conduct clinical trials, and similar events relating to their computer systems could also have a material adverse
effect on our business.

To the extent that any disruption or security breach were to result in a loss of, or damage to, our data or applications, or inappropriate
disclosure of confidential or proprietary information, we could incur liability and the further development and commercialization of our
drug candidates could be delayed.

Any  failure  to  comply  with  the  various  applicable  laws  and  regulations  related  to  data  security,  cybersecurity  and  personal
information and privacy protection could affect our offshore offerings and lead to liabilities, penalties or other regulatory actions,
which could have a material and adverse effect on our business, financial condition and results of operations.

The  regulatory  framework  for  the  collection,  use,  safeguarding,  sharing,  transfer  and  other  processing  of  personal  information
worldwide  is  rapidly  evolving  and  is  likely  to  remain  uncertain  for  the  foreseeable  future.  Regulatory  authorities  in  virtually  every
jurisdiction  in  which  we  operate  have  implemented  and  are  considering  a  number  of  legislative  and  regulatory  proposals  concerning
personal data protection.

In the United States, we are subject to laws and regulations that address privacy, personal information protection and data security at
both the federal and state levels. Numerous laws and regulations, including security breach notification laws, health information privacy
laws,  and  consumer  protection  laws,  govern  the  collection,  use,  disclosure  and  protection  of  health-related  and  other  personal
information.  Given  the  variability  and  evolving  state  of  these  laws,  we  face  uncertainty  as  to  the  exact  interpretation  of  the  new
requirements,  and  we  may  be  unsuccessful  in  implementing  all  measures  required  by  regulators  or  courts  in  their  interpretation.  For
example, the federal Health Insurance Portability and Accountability Act of 1996, as amended by the Health Information Technology for
Economic and Clinical Health Act, and their respective implementing regulations, imposes requirements relating to the privacy, security
and transmission of individually identifiable health information. Among other things, the Health Information Technology for Economic
and  Clinical  Health  Act,  through  its  implementing  regulations,  makes  certain  of  privacy  and  security  standards  under  the  Health
Insurance Portability and Accountability Act of 1996 directly applicable to business associates, defined as a person or organization, other
than a member of a covered entity’s workforce, that creates, receives, maintains or transmits protected health information for or on behalf
of a covered entity for a function or activity regulated by the Health Insurance Portability and Accountability Act of 1996 as well as their
covered subcontractors.

In Europe, regulatory authorities have implemented and are considering a number of legislative and regulatory proposals concerning
data protection. For example, the General Data Protection Regulation (EU) 2016/679, which became effective in May 2018, imposes a
broad range of strict requirements on companies, such as us, including, but not limited to, requirements relating to having legal bases for
processing  personal  information  relating  to  identifiable  individuals  and  transferring  such  information  outside  the  European  Economic
Area (including to the United States) and providing details to those individuals regarding the processing of their personal information,
keeping  personal  information  secure.  The  General  Data  Protection  Regulation  (EU)  2016/679  substantially  increases  the  penalties  to
which  we  could  be  subject  in  the  event  of  any  non-compliance,  including  fines  of  up  to  10,000,000  Euros  or  up  to  2%  of  our  total
worldwide  annual  turnover  for  certain  comparatively  minor  offenses,  or  up  to  20,000,000  Euros  or  up  to  4%  of  our  total  worldwide
annual turnover for more serious offenses. Given the new law, we face uncertainty as to the exact interpretation of the new requirements,
and we may be unsuccessful in implementing all measures required by data protection authorities or courts in interpretation of the new
law. National laws of member states of the European Union are in the process of being adapted to the requirements under the General
Data Protection Regulation (EU) 2016/679. Because the General Data Protection Regulation (EU) 2016/679 specifically gives member
states flexibility with respect to certain matters, national laws may partially deviate from this regulation and impose different obligations
from country to country, leading to additional complexity and uncertainty.

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We expect that we will continue to face uncertainty as to whether our efforts to comply with evolving obligations under global data
protection,  privacy  and  security  laws  will  be  sufficient.  Any  failure  or  perceived  failure  by  us  to  comply  with  applicable  laws  and
regulations  could  result  in  reputational  damage  or  proceedings  or  actions  against  us  by  governmental  entities,  individuals  or  others.
These  proceedings  or  actions  could  subject  us  to  significant  civil  or  criminal  penalties  and  negative  publicity,  result  in  the  delayed  or
halted  transfer  or  confiscation  of  certain  personal  information,  require  us  to  change  our  business  practices,  increase  our  costs  and
materially harm our business, prospects, financial condition and results of operations. In addition, our current and future relationships
with  customers,  vendors,  pharmaceutical  partners  and  other  third  parties  could  be  negatively  affected  by  any  proceedings  or  actions
against us or current or future data protection obligations imposed on them under applicable laws, including the General Data Protection
Regulation  (EU)  2016/679.  In  addition,  a  data  breach  affecting  personal  information,  including  health  information,  could  result  in
significant legal and financial exposure and reputational damage that could potentially have an adverse effect on our business.

A  severe  or  prolonged  downturn  in  the  United  States  or  global  economy  could  materially  and  adversely  affect  our  business  and
financial condition.

COVID-19 had a severe and negative impact on the United States and the global economy from 2020 through 2022, and the global
macroeconomic environment still faces numerous challenges. The Federal Reserve and other central banks have raised interest rates. The
Russia-Ukraine  conflict,  the  Hamas-Israel  conflict  and  the  attacks  on  shipping  in  the  Red  Sea  have  heightened  geopolitical  tensions
across the world. The impact of the Russia-Ukraine conflict on Ukraine food exports has contributed to increases in food prices and thus
to inflation more generally. There have also been concerns about the relationship between the United States and other countries which
may potentially have economic effects. Economic conditions in the United States are sensitive to global economic conditions, as well as
changes in domestic economic and political policies and the expected or perceived overall economic growth rate in the United States.
Any severe or prolonged slowdown in the global or the United States economy may materially and adversely affect our business, results
of operations and financial condition.

Any  of  these  factors  and  other  factors  beyond  our  control  could  have  an  adverse  effect  on  the  overall  business  sentiment  and
environment, cause uncertainties in the regions where we conduct business, cause our business to suffer in ways that we cannot predict
and materially and adversely impact our business, financial conditions and results of operations.

Our business and results of operations could be adversely affected by public health crisis and natural catastrophes or other disasters
outside of our control in the locations in which we, our suppliers, CROs, contract manufacturing organizations and other contractors
operate.

Natural disasters, acts of war or terrorism, health epidemics, or other factors beyond our control may adversely affect the economy,
infrastructure and livelihood of the people in the regions where we conduct our business. In addition to the impact of COVID-19, global
pandemics in the locations in which we, our suppliers, CROs, contract manufacturing organizations and other contractors operate, or fear
of  spread  of  contagious  diseases,  such  as  avian  influenza,  severe  acute  respiratory  syndrome  (SARS),  influenza  A  (H1N1),  Ebola  or
another epidemic could disrupt the business operations of our company, our suppliers, CROs, contract manufacturing organizations and
other contractors. Our operations may also be under the threat of floods, earthquakes, sandstorms, snowstorms, fire or drought, power,
water or fuel shortages, failures, malfunction and breakdown of information management systems, unexpected maintenance or technical
problems,  or  may  be  susceptible  to  potential  wars  or  terrorist  attacks.  Serious  natural  disasters  may  result  in  loss  of  lives,  injury,
destruction of assets and disruption of our business and operations. Acts of war or terrorism may also injure our employees, cause loss of
lives, disrupt our business network and destroy our markets.

The occurrence of any of the foregoing events is beyond our control but may result in regional or global economic distress, which

may materially and adversely affect our business, financial condition and results of operations.

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If we fail to implement and maintain an effective system of internal controls over financial reporting, we may be unable to accurately
report our results of operations, meet our reporting obligations or prevent fraud.

We are a public company in the United States subject to the Sarbanes-Oxley Act of 2002. Pursuant to Section 404 of the Sarbanes-
Oxley Act, we are required to include a report by our management on our internal control over financial reporting and our independent
registered public accounting firm must include an attestation report on internal control over financial reporting in our annual reports. Our
management  may  conclude  that  our  internal  control  over  financial  reporting  is  not  effective.  Moreover,  even  if  our  management
concludes  that  our  internal  control  over  financial  reporting  is  effective,  our  independent  registered  public  accounting  firm,  after
conducting its own independent testing, may issue an adverse report if it is not satisfied with our internal controls or the level at which
our  controls  are  documented,  designed,  operated  or  reviewed,  or  if  it  interprets  the  applicable  requirements  differently  from  us.  In
addition,  as  a  public  company,  our  reporting  obligations  may  place  a  significant  strain  on  our  management,  operational  and  financial
resources  and  systems  for  the  foreseeable  future.  We  may  be  unable  to  timely  complete  our  evaluation  testing  and  any  required
remediation.  Our  management,  with  the  participation  of  our  chief  executive  officer  and  chief  financial  officer,  and  our  independent
registered  public  accounting  firm  evaluated  the  effectiveness  of  our  internal  control  over  financial  reporting  and  concluded  that  our
internal  control  over  financial  reporting  was  effective  as  of  December  31,  2023.  See  also  “Item  15.  Controls  and  Procedures”  for  a
detailed description.

If we fail to maintain the adequacy of our internal control over financial reporting, as these standards are modified, supplemented or
amended from time to time, we may not be able to conclude on an ongoing basis that we have effective internal control over financial
reporting  in  accordance  with  Section  404.  If  we  fail  to  establish  and  maintain  adequate  internal  controls,  we  could  suffer  material
misstatements  in  our  financial  statements  and  fail  to  meet  our  reporting  obligations,  which  would  likely  cause  investors  to  lose
confidence in our reported financial information. This could limit our access to capital markets, adversely affect our results of operations
and lead to a decline in the trading price of the ADSs. Additionally, ineffective internal controls could expose us to an increased risk of
fraud or misuse of corporate assets and subject us to potential delisting from the stock exchange on which we list or to other regulatory
investigations and civil or criminal sanctions. We could also be required to restate our historical financial statements.

We may be subject to material litigation and regulatory proceedings.

We may be subject to litigation relating to securities law class actions, third-party and principal intellectual property infringement
claims,  claims  relating  to  data  and  privacy  protection,  contractual  agreements,  employment  related  cases  and  other  matters  in  the
ordinary course of our business. For details of the material legal proceedings that we are subject to, see “Item 8. Financial Information—
A. Consolidated Statements and Other Financial Information—Legal Proceedings.” Laws, rules and regulations may vary in their scope
and laws and regulations outside the U.S. may impose requirements that are more stringent than, or which conflict with, those in the U.S.
We have acquired and may acquire companies that may become subject to litigation, as well as regulatory proceedings. In connection
with our prior investment in I-Mab Hangzhou, we through I-Mab Hong Kong were obligated to repurchase the equity held by any then-
existing shareholder in I-Mab Hangzhou by cash upon the occurrence of certain triggering events. In connection with the divestiture of
the  Greater  China  assets  and  business  operations,  we  have  transferred  the  equity  interests  we  held  in  I-Mab  Hangzhou  to  certain
participating  shareholders  of  I-Mab  Hangzhou  in  exchange  for  extinguishment  of  the  existing  repurchase  obligations  owed  by  I-Mab
Hong Kong to those shareholders in the amount of approximately US$183 million. However, the non-participating shareholders of I-Mab
Hangzhou  have  initiated  legal  proceedings  against  I-Mab  Hong  Kong  and  our  company  in  connection  with  the  aforementioned
transaction. On January 31, 2024, the non-participating shareholders of I-Mab Hangzhou, commenced arbitration against I-Mab Hong
Kong  before  China  International  Economic  and  Trade  Arbitration  Commission  Zhejiang  Sub-Commission.  These  non-participating
shareholders seek monetary relief amounting to US$17.36 million as of January 29, 2024 in total and an order that I-Mab Hong Kong
pay all arbitration fees and property preservation fees incurred by them. The arbitration proceeding before the Zhejiang arbitration sub-
commission  is  still  pending.  We  have  not  yet  received  the  notice  of  hearing  and  are  currently  unable  to  predict  the  outcome  of  the
arbitration. In addition, in connection with litigation or regulatory proceedings we may be subject to in various jurisdictions, we may be
prohibited by laws, regulations or government authorities in one jurisdiction from complying with subpoenas, orders or other requests
from courts or regulators of other jurisdictions, including those relating to data held in or with respect to persons in these jurisdictions.
Our failure or inability to comply with the subpoenas, orders or requests could subject us to fines, penalties or other legal liability, which
could have a material adverse effect on our reputation, business, results of operations and the trading price of our ADSs.

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As a publicly listed company, we and certain of our subsidiaries face additional exposure to claims and lawsuits. We will need to
defend against these lawsuits, including any appeals should our initial defense be successful. The litigation process may utilize a material
portion of our cash resources and divert management’s attention away from the day-to-day operations of our company, all of which could
harm our business. There can be no assurance that we will prevail in any of these cases, and any adverse outcome of these cases could
have a material adverse effect on our reputation, business and results of operations. In addition, although we have obtained directors’ and
officers’ liability insurance, the insurance coverage may not be adequate to cover our obligations to indemnify our directors and officers,
fund a settlement of litigation in excess of insurance coverage or pay an adverse judgment in litigation.

The existence of litigation, claims, investigations and proceedings may harm our reputation, limit our ability to conduct our business
in the affected areas and adversely affect the trading price of our ADSs. The outcome of any claims, investigations and proceedings is
inherently uncertain, and in any event defending against these claims could be both costly and time-consuming, and could significantly
divert  the  efforts  and  resources  of  our  management  and  other  personnel.  An  adverse  determination  in  any  litigation,  investigation  or
proceeding could cause us to pay damages, incur legal and other costs, limit our ability to conduct business or require us to change the
manner in which we operate.

Negative publicity with respect to us, our management, employees, business partners, affiliates, or our industry, may materially and
adversely affect our reputation, business, results of operations and prospect.

Our  reputation  is  vulnerable  to  many  threats  that  can  be  difficult  or  impossible  to  control,  and  costly  or  impossible  to  remediate.
Negative  publicity  about  us,  such  as  alleged  misconduct  or  improper  activities,  or  negative  rumors  relating  to  us,  our  management,
employees,  business  partners  or  affiliates,  can  harm  our  business  and  results  of  operations,  even  if  they  are  unsubstantiated  or  are
satisfactorily  addressed.  Any  regulatory  inquiries  or  investigations  or  other  actions  against  our  management,  any  perceived  unethical,
fraudulent,  or  inappropriate  business  conduct  by  us  or  perceived  wrong-doing  by  any  key  member  of  our  management  team  or  other
employees, our business partners or our affiliates, could harm our reputation and materially adversely affect our business. Regardless of
the  merits  or  final  outcome  of  any  such  regulatory  inquiries  or  investigations  or  other  actions,  our  reputation  may  be  substantially
damaged, which may impede our ability to attract and retain talents and business partners and develop our business.

Any  negative  publicity  concerning  us,  our  affiliates  or  any  entity  that  shares  the  “I-Mab”  name,  including  the  divested  PRC
subsidiaries,  even  if  untrue,  could  adversely  affect  our  reputation  and  business  prospects.  There  can  be  no  assurance  that  negative
publicity  about  us  or  any  of  our  affiliates  or  any  entity  that  shares  the  “I-Mab”  name  would  not  damage  our  brand  image  or  have  a
material adverse effect on our business, results of operations and financial condition.

Moreover, any negative media publicity about the biopharmaceutical industry in general or product or service quality problems of
other  companies  in  the  industry,  including  our  peers,  may  also  negatively  impact  our  reputation.  If  we  are  unable  to  maintain  a  good
reputation,  our  ability  to  attract  and  retain  key  employees  and  business  partners  could  be  harmed  which  in  turn  may  materially  and
adversely affect our business, results of operations and prospect.

We face risks associated with the divestiture of the Greater China assets and business operations to I-Mab Hangzhou.

On February 6, 2024, we entered into definitive agreements to divest the Greater China assets and business operations, including the
rights to the Greater China portfolio, to I-Mab Hangzhou for an aggregate consideration of the RMB equivalent of up to US$80 million,
contingent on the achievement of certain future regulatory and sales-based milestone events. The divestiture transaction was closed in
April 2024. After the completion of the divestiture, we do not own any rights to the Greater China portfolio, including the Greater China
rights  for  eftansomatropin  alfa,  felzartamab,  uliledlimab,  and  givastomig.  We  no  longer  bear  future  development  costs  of  the  Greater
China  assets  and  business  operations.  As  a  result  of  the  divestiture,  we  have  ceased  to  consolidate  the  divested  entities,  assets  and
businesses as well as their corresponding financial results from the second quarter of 2024. In light of that, our financial condition and
results of operations will be materially affected and our historical results will not be indicative of future financial condition or results of
operations.

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There  is  no  assurance  that  we  may  achieve  anticipated  strategic  benefits  through  the  divestiture.  We  may  experience  negative
reactions as a result of the divestiture. In addition, as credit enhancement measures for payment of the consideration, I-Mab Hangzhou
will secure a bank facility or a loan with the amount no less than US$20 million. However, I-Mab Hangzhou may not be able to achieve
some or any of the future regulatory or sales-based milestone events. There also is no assurance that such credit enhancement measures
would be effective, and we may not be able to collect part or all of the consideration upon the occurrence of triggering events. Moreover,
we cannot assure you that the divestiture will not be challenged by governmental authorities or private parties. We may be subject to
litigation or other proceedings in connection with, or as a result of the divestiture, which may divert resources and management attention
and harm our reputation, and may subject us to significant consequences, including fines, indemnification of the buyers and reversal of
the divestiture.

Furthermore, we previously were the largest shareholder of I-Mab Hangzhou and were obligated to repurchase the equity held by
any then-existing shareholder in I-Mab Hangzhou by cash upon the occurrence of certain triggering events. The divestiture of the Greater
China  assets  and  business  operations  extinguished  the  existing  repurchase  obligations  owed  by  us  in  the  amount  of  approximately
US$183 million to certain participating shareholders involved in the transaction. However, the non-participating shareholders of I-Mab
Hangzhou have initiated legal proceedings against I-Mab Hong Kong and our company in relation to our repurchase obligations owed to
them. The total amount of potential repurchase obligations owed to the non-participating shareholders upon the closing of the transaction
is expected to range from US$30 million to US$35 million. We are not able to predict the final outcome of such litigation, and there
might  be  other  litigations  or  regulatory  enforcement  actions  in  connection  with  such  litigation.  Any  adverse  outcome  or  any  other
litigation  or  regulatory  enforcement  action  in  connection  thereof,  could  have  a  material  adverse  effect  on  our  business,  financial
condition, results of operation, cash flows, and reputation.

We are subject to changing law and regulations regarding regulatory matters, corporate governance and public disclosure that have
increased both our costs and the risk of non-compliance.

We are or will be subject to rules and regulations by various governing bodies, including, for example, the SEC, which is charged
with  the  protection  of  investors  and  the  oversight  of  companies  whose  securities  are  publicly  traded,  and  the  various  regulatory
authorities in the U.S., the Cayman Islands and China, and to new and evolving regulatory measures under applicable law. Our efforts to
comply  with  new  and  changing  laws  and  regulations  have  resulted  in  and  are  likely  to  continue  to  result  in,  increased  general  and
administrative expenses and a diversion of management time and attention from revenue-generating activities to compliance activities.

Moreover,  because  these  laws,  regulations  and  standards  are  subject  to  varying  interpretations,  their  application  in  practice  may
evolve over time as new guidance becomes available. This evolution may result in continuing uncertainty regarding compliance matters
and additional costs necessitated by ongoing revisions to our disclosure and governance practices. If we fail to address and comply with
these regulations and any subsequent changes, we may be subject to penalty and our business may be harmed.

Risks Related to Doing Business in China

We are subject to China’s data privacy and cybersecurity laws, regulations and guidelines and any other future laws and regulations,
which may entail significant compliance costs and adversely affect our business.

Following the divestiture of the Greater China assets and business operations, we use a limited number of third-party data centers in
China  to  host  our  servers.  As  a  result,  we  are  subject  to  China’s  data  privacy  and  cybersecurity  laws,  regulations  and  guidelines.  In
China,  regulatory  authorities  have  implemented  and  are  considering  a  number  of  legislative  and  regulatory  proposals  concerning  data
protection.  For  example,  China’s  Cyber  Security  Law,  which  became  effective  in  June  2017,  created  China’s  first  national-level  data
protection  for  “network  operators,”  which  may  include  all  organizations  in  China  that  provide  services  over  the  internet  or  another
information network. The Data Security Law, which became effective in September 2021, among other things, provides for a security
review procedure for the data activities that may affect national security. In addition, the Civil Code of the PRC, which became effective
on January 1, 2021, expressly provides the right of privacy and personal information protection. The PRC Cyber Security Law, the Data
Security Law and Civil Code are relatively new and subject to interpretation by the regulators. Although we only gain access to user
information that is necessary for, and relevant to, the businesses conducted, the data we obtain and use may include information that is
deemed as “personal information” or “important data” under the PRC Cyber Security Law, the Civil Code and related data privacy and
protection laws and regulations.

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In addition, certain industry-specific laws and regulations affect the collection and transfer of personal data in China. For example,
Regulations on the Administration of Human Genetic Resources, effective in July 2019, the latest amended edition of which will come
into effect on May 1, 2024, require approval from the Science and Technology Administration Department of the State Council where
human genetic resources are involved in any international collaborative project and additional approval for any export or cross-border
transfer of the samples of human genetic resources or associated data. It is possible that these laws may be interpreted and applied in a
manner that is inconsistent with our practices, potentially resulting in confiscation of samples of human genetic resources and associated
data, administrative fines and criminal liabilities.

Furthermore,  in  December  2021,  the  CAC  and  several  other  authorities  jointly  promulgated  the  revised  Cybersecurity  Review
Measures, which came into effect in February 2022. Pursuant to the Cybersecurity Review Measures, a critical information infrastructure
operator that purchases network products and services, or an internet platform operator that conducts data processing activities, shall be
subject to cybersecurity review if it affects or may affect national security. In addition, internet platform operators processing personal
information of more than one million users seeking to be listed on foreign stock markets must apply for a cybersecurity review. As of the
date of this annual report, (i) no detailed rules or implementation relating to the Cybersecurity Review Measures has been issued by any
PRC  regulatory  authorities,  (ii)  we  have  not  been  informed  of  being  identified  as  a  critical  information  infrastructure  operator  or  an
internet  platform  operator,  nor  have  we  been  required  to  go  through  the  cybersecurity  review  procedures,  by  any  PRC  governmental
authorities, and (iii) we have not been involved in any investigations on cybersecurity review on such basis, nor have we received any
inquiry, notice, warning, or sanctions in such respect, by any PRC governmental authorities. Taking into consideration the above and that
(i) the preclinical and clinical data processed or handled by us in our business operations, either by its nature or in scale, do not and will
not directly or indirectly affect or potentially affect national security in any respect, and (ii) we have not possessed, and do not anticipate
to possess, in the foreseeable future, personal information of more than one million users or persons, based on our understanding of the
Cybersecurity Review Measures, we do not expect that we will be subject to cybersecurity review by the CAC in connection with our
offering of securities to foreign investors and listing on the Nasdaq. Nevertheless, the exact scope of critical information infrastructure
operator  and  “internet  platform  operator”  under  the  current  regulatory  regime  remains  unclear,  and  the  PRC  governmental  authorities
may have wide discretion to decide the identification of critical information infrastructure operator as well as in the interpretation and
enforcement  of  the  Cybersecurity  Review  Measures  and  other  laws,  regulations  and  implementation  rules.  Therefore,  it  is  uncertain
whether we would be deemed as a critical information infrastructure operator or an internet platform operator thereunder.

Since  2022,  the  CAC  also  promulgated  a  series  of  rules  and  regulations  on  outbound  data  transfer,  outlining  the  regulatory
framework and providing detailed guidance. A data processor is subject to different regulatory requirements, depending on the nature,
sensitivity and volume of the data to be transferred. See “Item 4.—Information on the Company—B. Business Overview—Regulation—
PRC Regulation.”

The  PRC  laws  and  regulations  concerning  data  privacy  and  cybersecurity  are  continually  evolving  and  not  always  clear,  and  the
measures we take to comply with these laws, regulations and industry standards may not always be effective. We cannot assure you that
we will comply with such laws and regulations regarding cybersecurity, information security, privacy and data protection in all respects
and  any  failure  or  perceived  failure  to  comply  with  these  laws,  regulations  or  policy  may  result  in  inquiries,  penalties  and  other
proceedings  or  actions  against  us  by  governmental  authorities,  such  as  warnings,  fines,  making  certain  required  rectification,  service
suspension  and/or  other  sanctions,  as  well  as  negative  publicity  and  damage  to  our  reputation.  It  also  remains  uncertain  whether  the
future  regulatory  changes  would  impose  additional  restrictions  on  companies  like  us.  We  cannot  predict  the  impact  of  the  future
regulatory changes, including impact of any draft measures, at this stage, and we will closely monitor and assess any development in the
rule-making process. If additional requirements are imposed to companies like us, such as the clearance of cybersecurity review, we face
uncertainties  as  to  whether  we  can  fulfill  those  requirements  in  a  timely  manner,  or  at  all.  If  we  are  not  able  to  comply  with  the
cybersecurity  and  data  privacy  requirements  in  a  timely  manner,  or  at  all,  we  may  be  subject  to  government  enforcement  actions  and
investigations, fines, penalties or suspension of our non-compliant operations, which could materially and adversely affect our business
and results of operations.

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Uncertainties with respect to the PRC legal system could materially and adversely affect us.

The PRC legal system is a civil law system based on written statutes. Unlike the common law system, prior court decisions under the
civil  law  system  may  be  cited  for  reference  but  have  limited  precedential  value.  The  overall  effect  of  legislation  over  the  past  four
decades has significantly enhanced the protections afforded to various forms of foreign investments in China. However, China has not
developed a fully integrated legal system, and currently effective laws and regulations may not sufficiently cover all aspects of economic
activities in China. Since these laws and regulations are relatively new and may be amended from time to time, and the PRC legal system
continues to rapidly evolve, and because of the limited number of published decisions and the nonbinding nature of such decisions, and
because the laws and regulations often give the regulator significant discretion in how to enforce them, the interpretations of many laws,
regulations and rules may not be uniform and enforcement of these laws, regulations and rules involves uncertainties. These uncertainties
may affect our judgment on the relevance of legal requirements and our ability to enforce our contractual rights or tort claims. Besides,
the PRC is geographically large and divided into various provinces and municipalities and, as such, different laws, rules, regulations and
policies  may  have  different  and  varying  applications  and  interpretations  in  different  parts  of  the  PRC.  Legislation  or  regulations,
particularly  in  local  applications,  may  be  enacted  without  sufficient  prior  notice  or  announcement  to  the  public.  In  addition,  the
regulatory  uncertainties  may  be  exploited  through  unmerited  or  frivolous  legal  actions  or  threats  in  attempts  to  extract  payments  or
benefits from us. Furthermore, the PRC legal system is based in part on government policies and internal rules, some of which are not
published on a timely basis, or at all, and may have a retroactive effect. As a result, we may not be aware of our violation of any of these
policies and rules until sometime after the violation. Agreements that are governed by PRC laws may be more difficult to enforce by
legal or arbitral proceedings in the PRC than that in other countries with different legal systems. In addition, any administrative and court
proceedings in China may be protracted, resulting in substantial costs and diversion of resources and management attention.

The ability of U.S. authorities to bring actions for violations of U.S. securities law and regulations against us or our directors may be
limited. Therefore, you may not be afforded the same protection as provided to investors in U.S. domestic companies.

The  SEC,  the  U.S.  Department  of  Justice  and  other  U.S.  authorities  often  have  substantial  difficulties  in  bringing  and  enforcing
actions against non-U.S. companies and non-U.S. persons. Due to jurisdictional limitations, matters of comity and various other factors,
the  SEC,  the  U.S.  Department  of  Justice  and  other  U.S.  authorities  may  be  limited  in  their  ability  to  pursue  bad  actors,  including  in
instances of fraud, in emerging markets such as China. Some of our directors reside within China. There are significant legal and other
obstacles for U.S. authorities to obtain information needed for investigations or litigation against us or our directors in case we or any of
these individuals engage in fraud or other wrongdoing. In addition, local authorities in China may be constrained in their ability to assist
U.S. authorities and overseas investors in connection with legal proceedings. As a result, if we or our directors commit any securities law
violation,  fraud  or  other  financial  misconduct,  the  U.S.  authorities  may  not  be  able  to  conduct  effective  investigations  or  bring  and
enforce actions against us, our directors or other gatekeepers. Therefore, you may not be able to enjoy the same protection provided by
various U.S. authorities as it is provided to investors in U.S. domestic companies.

The PCAOB had historically been unable to inspect our auditor in relation to their audit work performed for our financial statements
and the inability of the PCAOB to conduct inspections of our auditor in the past has deprived our investors with the benefits of such
inspections.

Our auditor, the independent registered public accounting firm that issues the audit report included elsewhere in this annual report,
as an auditor of companies that are traded publicly in the United States and a firm registered with the PCAOB, is subject to laws in the
United  States  pursuant  to  which  the  PCAOB  conducts  regular  inspections  to  assess  its  compliance  with  the  applicable  professional
standards. The auditor is located in mainland China, a jurisdiction where the PCAOB was historically unable to conduct inspections and
investigations completely before 2022.

As a result, we and investors in the ADSs were deprived of the benefits of such PCAOB inspections. The inability of the PCAOB to
conduct inspections of auditors in China in the past has made it more difficult to evaluate the effectiveness of our independent registered
public accounting firm’s audit procedures or quality control procedures as compared to auditors outside of China that are subject to the
PCAOB inspections. On December 15, 2022, the PCAOB issued a report that vacated its December 16, 2021 determination and removed
mainland China and Hong Kong from the list of jurisdictions where it is unable to inspect or investigate completely registered public
accounting firms. However, if the PCAOB determines in the future that it no longer has full access to inspect and investigate completely
accounting firms in mainland China and Hong Kong, and we use an accounting firm headquartered in one of these jurisdictions to issue
an audit report on our financial statements filed with the SEC, we and investors in our ADSs would be deprived of the benefits of such
PCAOB inspections again, which could cause investors and potential investors in the ADSs to lose confidence in our audit procedures
and reported financial information and the quality of our financial statements.

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Our ADSs may be prohibited from trading in the United States under the HFCAA in the future if the PCAOB is unable to inspect or
investigate completely auditors located in China. The delisting of the ADSs, or the threat of their being delisted, may materially and
adversely affect the value of your investment.

Pursuant to the HFCAA, if the SEC determines that we have filed audit reports issued by a registered public accounting firm that has
not been subject to inspections by the PCAOB for two consecutive years, the SEC will prohibit our shares or ADSs from being traded on
a national securities exchange or in the over-the-counter trading market in the United States.

On December 16, 2021, the PCAOB issued a report to notify the SEC of its determination that the PCAOB was unable to inspect or
investigate completely registered public accounting firms headquartered in mainland China and Hong Kong and our auditor was subject
to that determination. In May 2022, the SEC conclusively listed us as a Commission-Identified Issuer under the HFCAA following the
filing of our annual report on Form 20-F for the fiscal year ended December 31, 2021. On December 15, 2022, the PCAOB removed
mainland China and Hong Kong from the list of jurisdictions where it is unable to inspect or investigate completely registered public
accounting  firms.  For  this  reason,  we  were  not  identified  as  a  “Commission  Identified  Issuer”  under  the  HFCAA  after  we  filed  our
annual report on Form 20-F for the fiscal year ended December 31, 2022 and do not expect to be so identified after we file this annual
report on Form 20-F for the fiscal year ended December 31, 2023.

Each year, the PCAOB will determine whether it can inspect and investigate completely audit firms in mainland China and Hong
Kong,  among  other  jurisdictions.  If  the  PCAOB  determines  in  the  future  that  it  no  longer  has  full  access  to  inspect  and  investigate
completely  accounting  firms  in  mainland  China  and  Hong  Kong  and  we  use  an  accounting  firm  headquartered  in  one  of  these
jurisdictions to issue an audit report on our financial statements filed with the SEC, we would be identified as a Commission-Identified
Issuer following the filing of the annual report on Form 20-F for the relevant fiscal year. In accordance with the HFCAA, our securities
would be prohibited from being traded on a national securities exchange or in the over-the-counter trading market in the United States if
we are identified as a Commission-Identified Issuer for two consecutive years in the future. If our shares and ADSs are prohibited from
trading in the United States, there is no certainty that we will be able to list on a non-U.S. exchange or that a market for our shares will
develop outside of the United States. A prohibition of being able to trade in the United States would substantially impair your ability to
sell or purchase our ADSs when you wish to do so, and the risk and uncertainty associated with delisting would have a negative impact
on the price of our ADSs. Also, such a prohibition would significantly affect our ability to raise capital on terms acceptable to us, or at
all, which would have a material adverse impact on our business, financial condition, and prospects.

We may be restricted from transferring our scientific data abroad.

On March 17, 2018, the General Office of the PRC State Council promulgated the Measures for the Management of Scientific Data,
which  provide  a  broad  definition  of  scientific  data  and  rules  for  the  management  of  scientific  data.  According  to  these  measures,
enterprises in China must seek governmental approval before any scientific data involving a state secret may be transferred abroad or to
foreign  parties.  Further,  any  researcher  conducting  research  funded,  at  least  in  part,  by  the  PRC  government  is  required  to  submit
scientific  data  for  management  by  the  entity  to  which  such  researcher  is  affiliated  before  the  data  may  be  published  in  any  foreign
academic journal. Currently, as the term “state secret” is not clearly defined, there is no assurance that we can always obtain approvals
for sending scientific data (such as the results of our clinical trials conducted within China) abroad, or to our foreign partners in China.

If we are unable to obtain the necessary approvals in a timely manner, or at all, our research and development of drug candidates
may be hindered, which may materially and adversely affect our business, results of operations, financial conditions and prospects. If the
government authorities consider the transmission of our scientific data to be in violation of the requirements under the measures, we may
be subject to specific administrative penalties imposed by those government authorities.

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Changes in international trade policies and rising political tensions, particularly between the U.S. and China, may adversely impact
our business and operating results.

The  U.S.  government  has  made  statements  and  taken  certain  actions  that  may  lead  to  potential  changes  to  U.S.  and  international
trade  policies  towards  China.  While  the  “Phase  One”  agreement  was  signed  between  the  United  States  and  China  on  trade  matters,  it
remains unclear what additional actions, if any, will be taken by the U.S. or other governments with respect to international trade, tax
policy related to international commerce, or other trade matters. The situation is further complicated by the political tensions between the
United States and China that escalated recently and in the wake of the PRC National People’s Congress’ decision on Hong Kong national
security legislation, sanctions imposed by the U.S. Department of Treasury on certain officials of the Hong Kong Special Administrative
Region and the central government of the PRC and the executive orders issued by the then U.S. President in August 2020 that prohibit
certain transactions with certain China-based companies and their respective subsidiaries. Rising trade and political tensions could reduce
levels of trades, investments, technological exchanges and other economic activities between China and other countries, which would
have an adverse effect on global economic conditions, the stability of global financial markets, and international trade policies.

While  we  have  not  started  the  commercialization  of  our  drug  candidates,  any  rising  trade  and  political  tensions  or  unfavorable
government  policies  on  international  trade,  such  as  capital  controls  or  tariffs,  may  affect  the  demand  for  our  drug  products,  the
competitive position of our drug products, the hiring of scientists and other research and development personnel, and import or export of
raw materials in relation to drug development, or prevent us from selling our drug products in certain countries. In particular, if any new
tariffs,  legislation  and/or  regulations  are  implemented,  or  if  existing  trade  agreements  are  renegotiated  or,  especially,  if  the  U.S.
government takes retaliatory trade actions due to the recent U.S.-China trade and political tension, such changes could have an adverse
effect on our business, financial condition and results of operations. In addition, our results of operations could be adversely affected if
any such tensions or unfavorable government trade policies harm the Chinese economy or the global economy in general.

Recent  litigation  and  negative  publicity  surrounding  companies  with  operations  in  China  that  are  listed  in  the  U.S.  may  result  in
increased regulatory scrutiny of us and negatively impact the trading price of the ADSs and could have a material adverse effect upon
our business, including our results of operations, financial condition, cash flows and prospects.

We  believe  that  litigation  and  negative  publicity  surrounding  companies  with  operations  in  China  that  are  listed  in  the  U.S.  have
negatively impacted stock prices for such companies. Various equity-based research organizations have published reports on China-based
companies  after  examining,  among  other  things,  their  corporate  governance  practices,  related  party  transactions,  sales  practices  and
financial  statements  that  have  led  to  special  investigations  and  stock  suspensions  on  national  exchanges.  Any  similar  scrutiny  of  us,
regardless of its lack of merit, could result in a diversion of management resources and energy, potential costs to defend ourselves against
rumors,  decreases  and  volatility  in  the  ADS  trading  price,  and  increased  directors  and  officers  insurance  premiums  and  could  have  a
material adverse effect upon our business, including our results of operations, financial condition, cash flows and prospects.

General Risks Related to Our ADSs

The trading price of our ADSs may be volatile, which could result in substantial losses to you.

For  the  period  from  January  1,  2023  to  the  date  of  this  annual  report,  the  trading  price  of  our  ADSs  ranged  from  US$1.16  to
US$7.67 per ADS. The trading price of our ADSs can be volatile and fluctuate widely in response to a variety of factors, many of which
are beyond our control. In addition, the performance and fluctuation of the market prices of other companies with operations in the same
industry that have listed their securities in the United States may affect the volatility in the price of and trading volumes for our ADSs.
Some of these companies have experienced significant volatility. The trading performances of these companies’ securities may affect the
overall investor sentiment towards other companies listed in the United States and consequently may impact the trading performance of
our ADSs.

In addition to market and industry factors, the price and trading volume for our ADSs may be highly volatile for specific business

reasons, including:

● announcements of regulatory approval or a complete response letter, or specific label indications or patient populations for a

drug’s use, or changes or delays in the regulatory review process;

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● announcements  of  therapeutic  innovations,  new  products,  acquisitions,  strategic  relationships,  joint  ventures  or  capital

commitments by us or our competitors;

● adverse  actions  taken  by  regulatory  agencies  with  respect  to  our  clinical  trials,  manufacturing  supply  chain  or  sales  and

marketing activities;

● any adverse changes to our relationship with manufacturers or suppliers;

● the results of our testing and clinical trials;

● the results of our efforts to acquire or license additional drug candidates;

● variations in the level of expenses related to our existing drugs and drug candidates or pre-clinical, clinical development and

commercialization programs;

● any intellectual property infringement actions in which we may become involved;

● announcements concerning our competitors or the pharmaceutical industry in general;

● fluctuations in product revenue, sales and marketing expenses and profitability; manufacture, supply or distribution shortages;

● variations in our results of operations;

● announcements  about  our  results  of  operations  that  are  not  in  line  with  analyst  expectations,  the  risk  of  which  is  enhanced

because it is our policy not to give guidance on results of operations;

● publication  of  operating  or  industry  metrics  by  third  parties,  including  government  statistical  agencies,  that  differ  from

expectations of industry or financial analysts;

● changes in financial estimates by securities research analysts;

● media reports, whether or not true, about our business, our competitors or our industry;

● additions to or departures of our management;

● fluctuations  of  exchange  rates  between  the  U.S.  dollar  and  the  RMB  or  other  currencies  of  the  jurisdiction  where  our

contractors are located;

● release or expiry of lock-up or other transfer restrictions on our outstanding ordinary shares or ADSs;

● sales  or  perceived  potential  sales  of  additional  ordinary  shares  or  ADSs  by  us,  our  executive  officers  and  directors  or  our

shareholders;

● any share repurchase programs;

● general economic and market conditions and overall fluctuations in the U.S. equity markets;

● changes in accounting principles; and

● changes or developments in the U.S., PRC or global regulatory environment.

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In  addition,  the  stock  market,  in  general,  and  pharmaceutical  and  biotechnology  companies  have  experienced  extreme  price  and
volume fluctuations that have often been unrelated or disproportionate to the operating performance of these companies. Broad market
and industry factors may negatively affect the market price of our ADSs, regardless of our actual operating performance. Further, the
current  volatility  in  the  financial  markets  and  related  factors  beyond  our  control  may  cause  the  market  price  of  our  ADSs  to  decline
rapidly and unexpectedly.

We may face an increased risk of securities class action litigation.

Historically, securities class action litigation has often been brought against a company following a significant decline in the market
price of its securities. This risk is especially relevant for us because biotechnology and biopharmaceutical companies have experienced
significant  share  price  volatilities  in  recent  years.  If  we  were  to  face  lawsuits,  it  could  lead  to  substantial  costs  and  a  distraction  of
management’s attention and resources, which could harm our business.

In the past, shareholders of a public company often brought securities class action suits against the company following periods of
instability in the market price of that company’s securities. If we were involved in a class action suit, it could divert a significant amount
of  our  management’s  attention  and  other  resources  from  our  business  and  operations,  which  could  harm  our  results  of  operations  and
require  us  to  incur  significant  expenses  to  defend  the  suit.  Any  such  class  action  suit,  whether  or  not  successful,  could  harm  our
reputation and restrict our ability to raise capital in the future. In addition, if a claim is successfully made against us, we may be required
to pay significant damages, which could have a material adverse effect on our financial condition and results of operations.

We  cannot  guarantee  that  any  share  repurchase  programs  will  be  fully  consummated  or  that  any  share  repurchase  programs  will
enhance  long-term  shareholder  value,  and  share  repurchases  could  increase  the  volatility  of  the  price  of  our  ADSs  and  could
diminish our cash reserves.

Our  board  of  directors  has  authorized  share  repurchase  programs,  pursuant  to  which  we  were  authorized  to  repurchase  our  own
ordinary shares, in the form of ADSs, with an aggregate value of up to a maximum amount during a given period. We implemented share
repurchases  pursuant  to  those  authorized  share  repurchase  programs  from  time  to  time.  Our  board  of  directors  reviews  the
implementation of share repurchases periodically and may authorize adjustment of the terms and size of the share repurchase programs.
For  details  of  the  purchase  of  equity  securities  by  us  and  affiliated  purchasers,  see  “Item  16E.  Purchases  of  Equity  Securities  by  the
Issuer and Affiliated Purchasers.” The timing and dollar amount of share repurchases could affect the price of our ADSs and increase
volatility.  Nevertheless,  there  can  be  no  assurance  that  any  of  our  share  repurchase  programs  will  be  fully  consummated  or  that  such
share repurchase programs could enhance long-term shareholder value. For example, of the US$40 million that we were authorized to
use in repurchasing ADSs under the share repurchase program that was in effect from September 12, 2022 through September 11, 2023,
we only used approximately US$6.8 million. Of the US$40 million that we are currently authorized to use in repurchasing ADSs under
the  share  repurchase  program  that  is  in  effect  from  August  15,  2023  through  August  14,  2024,  we  had  used  approximately  US$4.8
million as of December 31, 2023.

If securities or industry analysts do not publish research or publish inaccurate or unfavorable research about our business, or if they
adversely change their recommendations regarding our ADSs, the market price for our ADSs and trading volume could decline.

The trading market for our ADSs will depend in part on the research and reports that securities or industry analysts publish about us
or  our  business.  If  research  analysts  do  not  establish  and  maintain  adequate  research  coverage  or  if  one  or  more  of  the  analysts  who
covers  us  downgrades  our  ADSs  or  publishes  inaccurate  or  unfavorable  research  about  our  business,  the  market  price  for  our  ADSs
would likely decline. If one or more of these analysts cease coverage of our company or fail to publish reports on us regularly, we could
lose visibility in the financial markets, which, in turn, could cause the market price or trading volume for our ADSs to decline.

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Because we do not expect to pay dividends in the foreseeable future, you must rely on price appreciation of our ADSs for return on
your investment.

We  currently  intend  to  retain  most,  if  not  all,  of  our  available  funds  and  any  future  earnings  to  fund  the  development  and
development of our business. As a result, we do not expect to pay any cash dividends in the foreseeable future. Therefore, you should not
rely on an investment in our ADSs as a source for any future dividend income.

Our  board  of  directors  has  complete  discretion  as  to  whether  to  distribute  dividends,  subject  to  our  memorandum  and  articles  of
association and certain requirements of Cayman Islands law. In addition, our shareholders may by ordinary resolution declare a dividend,
but no dividend may exceed the amount recommended by our directors. Under Cayman Islands law, a Cayman Islands company may pay
a dividend out of either profit or share premium account of the company, provided that in no circumstances may a dividend be paid out of
share premium if this would result in the company being unable to pay its debts as they fall due in the ordinary course of business. Even
if our board of directors decides to declare and pay dividends, the timing, amount and form of future dividends, if any, will depend on our
future results of operations and cash flow, our capital requirements and surplus, the amount of distributions, if any, received by us from
our  subsidiaries,  our  financial  condition,  contractual  restrictions  and  other  factors  deemed  relevant  by  our  board  of  directors.
Accordingly,  the  return  on  your  investment  in  our  ADSs  will  likely  depend  entirely  upon  any  future  price  appreciation  of  our  ADSs.
There is no guarantee that our ADSs will appreciate in value or even maintain the price at which you purchased the ADSs. You may not
realize a return on your investment in our ADSs and you may even lose your entire investment in our ADSs.

Substantial future sales or perceived potential sales of our ADSs in the public market could cause the price of our ADSs to decline.

Sales of substantial amounts of our ADSs in the public market, or the perception that these sales could occur, could adversely affect
the  market  price  of  our  ADSs  and  could  materially  impair  our  ability  to  raise  capital  through  equity  offerings  in  the  future.  Certain
holders of our ordinary shares may cause us to register the sale of their shares under the Securities Act. Registration of these shares under
the Securities Act would result in ADSs representing these shares becoming freely tradable without restriction under the Securities Act
immediately upon the effectiveness of the registration. Sales of these registered shares in the form of ADSs in the public market, or sales
of securities held by our significant shareholders or any other shareholder or the availability of these securities for future sale could cause
the price of our ADSs to decline.

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The voting rights of holders of ADSs are limited by the terms of the deposit agreement, and you may not be able to exercise the same
rights as our shareholders.

Holders of ADSs do not have the same rights as our shareholders. As a holder of our ADSs, you will not have any direct right to
attend general meetings of our shareholders or to cast any votes at such meetings. As an ADS holder, you will only be able to exercise
the voting rights carried by the underlying ordinary shares indirectly by giving voting instructions to the depositary in accordance with
the provisions of the deposit agreement. Under the deposit agreement, you may vote only by giving voting instructions to the depositary.
Upon receipt of your voting instructions, the depositary will try, as far as is practicable, to vote the ordinary shares underlying your ADSs
in accordance with your instructions. If we ask for your instructions, then upon receipt of your voting instructions, the depositary will try
to  vote  the  underlying  ordinary  shares  in  accordance  with  these  instructions.  If  we  do  not  instruct  the  depositary  to  ask  for  your
instructions, the depositary may still vote in accordance with instructions you give, but it is not required to do so. You will not be able to
directly  exercise  your  right  to  vote  with  respect  to  the  underlying  ordinary  shares  unless  you  withdraw  the  shares,  and  become  the
registered  holder  of  such  shares  prior  to  the  record  date  for  the  general  meeting.  When  a  general  meeting  is  convened,  you  may  not
receive sufficient advance notice of the meeting to withdraw the shares underlying your ADSs and become the registered holder of such
shares to allow you to attend the general meeting and to vote directly with respect to any specific matter or resolution to be considered
and voted upon at the general meeting. In addition, under our memorandum and articles of association, for the purposes of determining
those shareholders who are entitled to attend and vote at any general meeting, our directors may close our register of members and/or fix
in advance a record date for such meeting, and such closure of our register of members or the setting of such a record date may prevent
you from withdrawing the ordinary shares underlying your ADSs and becoming the registered holder of such shares prior to the record
date, so that you would not be able to attend the general meeting or to vote directly. If we ask for your instructions, the depositary will
notify you of the upcoming vote and will arrange to deliver our voting materials to you. We have agreed to give the depositary notice of
shareholder  meetings  sufficiently  in  advance  of  such  meetings.  Nevertheless,  we  cannot  assure  you  that  you  will  receive  the  voting
materials  in  time  to  ensure  that  you  can  instruct  the  depositary  to  vote  the  underlying  ordinary  shares  represented  by  your  ADSs.  In
addition, the depositary and its agents are not responsible for failing to carry out voting instructions or for their manner of carrying out
your voting instructions. This means that you may not be able to exercise your right to direct how the shares underlying your ADSs are
voted,  and  you  may  have  no  legal  remedy  if  the  shares  underlying  your  ADSs  are  not  voted  as  you  requested.  In  addition,  in  your
capacity as an ADS holder, you will not be able to call a shareholders’ meeting. Except in limited circumstances, the depositary for our
ADSs will give us a discretionary proxy to vote the ordinary shares underlying your ADSs if you do not vote at shareholders’ meetings,
which could adversely affect your interests.

Under the deposit agreement for the ADSs, if you do not vote, the depositary will give us a discretionary proxy to vote the ordinary

shares underlying your ADSs at shareholders’ meetings unless:

● we have instructed the depositary that we do not wish a discretionary proxy to be given;

● we have informed the depositary that there is substantial opposition as to a matter to be voted on at the meeting;

● a matter to be voted on at the meeting would have an adverse impact on shareholders; or

● the voting at the meeting is to be made on a show of hands.

The effect of this discretionary proxy is that you cannot prevent our ordinary shares underlying your ADSs from being voted, except
under the circumstances described above. This may make it more difficult for shareholders to influence the management of our company.
Holders of our ordinary shares are not subject to this discretionary proxy.

Your right to participate in any future rights offerings may be limited, which may cause dilution to your holdings.

We may from time to time distribute rights to our shareholders, including rights to acquire our securities. However, we cannot make
rights  available  to  you  in  the  United  States  unless  we  register  both  the  rights  and  the  securities  to  which  the  rights  relate  under  the
Securities Act or an exemption from the registration requirements is available. Under the deposit agreement, the depositary will not make
rights available to you unless both the rights and the underlying securities to be distributed to ADS holders are either registered under the
Securities  Act  or  exempt  from  registration  under  the  Securities  Act.  We  are  under  no  obligation  to  file  a  registration  statement  with
respect to any such rights or securities or to endeavor to cause such a registration statement to be declared effective and we may not be
able to establish a necessary exemption from registration under the Securities Act. Accordingly, you may be unable to participate in our
rights offerings and may experience dilution in your holdings.

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You may not receive cash dividends if the depositary decides it is impractical to make them available to you.

The depositary will pay cash dividends on the ADSs only to the extent that we decide to distribute dividends on our ordinary shares
or other deposited securities, and we do not have any present plan to pay any cash dividends on our ordinary shares in the foreseeable
future.  To  the  extent  that  there  is  a  distribution,  the  depositary  of  our  ADSs  has  agreed  to  pay  to  you  the  cash  dividends  or  other
distributions  it  or  the  custodian  receives  on  our  ordinary  shares  or  other  deposited  securities  after  deducting  its  fees  and  expenses
pursuant  to  the  deposit  agreement.  You  will  receive  these  distributions  in  proportion  to  the  number  of  ordinary  shares  your  ADSs
represent. However, the depositary may, at its discretion, decide that it is inequitable or impractical to make a distribution available to
any holders of ADSs. For example, the depositary may determine that it is not practicable to distribute certain property through the mail,
or  that  the  value  of  certain  distributions  may  be  less  than  the  cost  of  mailing  them.  In  these  cases,  the  depositary  may  decide  not  to
distribute such property to you.

You may be subject to limitations on transfer of your ADSs.

Your ADSs are transferable on the books of the depositary. However, the depositary may close its transfer books at any time or from
time to time when it deems expedient in connection with the performance of its duties. The depositary may close its books from time to
time for a number of reasons, including in connection with corporate events such as a rights offering, during which time the depositary
needs  to  maintain  an  exact  number  of  ADS  holders  on  its  books  for  a  specified  period.  The  depositary  may  also  close  its  books  in
emergencies,  and  on  weekends  and  public  holidays.  In  addition,  the  depositary  may  refuse  to  deliver,  transfer  or  register  transfers  of
ADSs generally when our books or the books of the depositary are closed, or at any time if we or the depositary deems it advisable to do
so because of any requirement of law or of any government or governmental body, or under any provision of the deposit agreement, or
for any other reason.

ADSs holders may not be entitled to a jury trial with respect to claims arising under the deposit agreement, which could result in less
favorable outcomes to the plaintiff(s) in any such action.

The  deposit  agreement  governing  the  ADSs  representing  our  ordinary  shares  provides  that,  subject  to  the  depositary’s  right  to
require  a  claim  to  be  submitted  to  the  federal  or  state  courts  in  the  City  of  New  York  have  jurisdiction  to  hear  and  determine  claims
arising under the deposit agreement and in that regard, to the fullest extent permitted by law, ADS holders waive the right to a jury trial
of  any  claim  they  may  have  against  us  or  the  depositary  arising  out  of  or  relating  to  our  shares,  the  ADSs  or  the  deposit  agreement,
including  any  claim  under  the  U.S.  federal  securities  laws.  Also,  we  may  amend  or  terminate  the  deposit  agreement  without  your
consent.  If  you  continue  to  hold  your  ADSs  after  an  amendment  to  the  deposit  agreement,  you  agree  to  be  bound  by  the  deposit
agreement as amended.

If we or the depositary were to oppose a jury trial demand based on such waiver, the court would determine whether the waiver was
enforceable  in  the  facts  and  circumstances  of  that  case  in  accordance  with  applicable  state  and  federal  law,  including  whether  a  party
knowingly, intelligently and voluntarily waived the right to a jury trial. The waiver to right to a jury trial of the deposit agreement is not
intended to be deemed a waiver by any holder or beneficial owner of ADSs of our or the depositary’s compliance with the U.S. federal
securities laws and the rules and regulations promulgated thereunder.

If  you  or  any  other  holders  or  beneficial  owners  of  ADSs  bring  a  claim  against  us  or  the  depositary  in  connection  with  matters
arising  under  the  deposit  agreement  or  the  ADSs,  including  claims  under  U.S.  federal  securities  laws,  you  or  such  other  holder  or
beneficial owner may not be entitled to a jury trial with respect to such claims, which may have the effect of limiting and discouraging
lawsuits against us and/or the depositary. If a lawsuit is brought against us and/or the depositary under the deposit agreement, it may be
heard only by a judge or justice of the applicable trial court, in which the trial would be conducted according to different civil procedures
and  may  result  in  different  outcomes  than  a  trial  by  jury  would  have  had,  including  results  that  could  be  less  favorable  to  the
plaintiff(s) in any such action.

Nevertheless,  if  this  jury  trial  waiver  provision  is  not  enforced,  to  the  extent  a  court  action  proceeds,  it  would  proceed  under  the
terms  of  the  deposit  agreement  with  a  jury  trial.  No  condition,  stipulation  or  provision  of  the  deposit  agreement  or  ADSs  serves  as  a
waiver by any holder or beneficial owner of ADSs or by us or the depositary of compliance with any substantive provision of the U.S.
federal securities laws and the rules and regulations promulgated thereunder.

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You  may  face  difficulties  in  protecting  your  interests,  and  your  ability  to  protect  your  rights  through  U.S.  courts  may  be  limited,
because we are incorporated under Cayman Islands law.

We are an exempted company incorporated under the laws of the Cayman Islands with limited liability. Our corporate affairs are
governed by our memorandum and articles of association, the Companies Act, Cap. 22 (Act 3 of 1961, as consolidated and revised) of
the Cayman Islands, which we refer to as the Companies Act, and the common law of the Cayman Islands. The rights of shareholders to
take  action  against  our  directors,  actions  by  our  minority  shareholders  and  the  fiduciary  duties  of  our  directors  to  us  under  Cayman
Islands law are to a large extent governed by the common law of the Cayman Islands. The common law of the Cayman Islands is derived
in part from comparatively limited judicial precedent in the Cayman Islands as well as from the common law of England, the decisions of
whose courts are of persuasive authority, but are not binding, on a court in the Cayman Islands. The rights of our shareholders and the
fiduciary  duties  of  our  directors  under  Cayman  Islands  law  are  not  as  clearly  established  as  they  would  be  under  statutes  or  judicial
precedent in some jurisdictions in the United States. In particular, the Cayman Islands has a less developed body of securities laws than
the United States. Some U.S. states, such as Delaware, have more fully developed and judicially interpreted bodies of corporate law than
the  Cayman  Islands.  In  addition,  with  respect  to  Cayman  Islands  companies,  plaintiffs  may  face  special  obstacles,  including  but  not
limited  to  those  relating  to  jurisdiction  and  standing,  in  attempting  to  assert  derivative  claims  in  state  or  federal  courts  of  the  United
States.

Shareholders of Cayman Islands exempted companies like us have no general rights under Cayman Islands law to inspect corporate
records (except for our memorandum and articles of association and our register of mortgages and charges) or to obtain copies of lists of
shareholders of these companies. Our directors have discretion under our articles of association to determine whether or not, and under
what  conditions,  our  corporate  records  may  be  inspected  by  our  shareholders,  but  are  not  obliged  to  make  them  available  to  our
shareholders. This may make it more difficult for you to obtain the information needed to establish any facts necessary for a shareholder
motion or to solicit proxies from other shareholders in connection with a proxy contest.

As a result of all of the above, our public shareholders may have more difficulty in protecting their interests in the face of actions
taken  by  management,  members  of  the  board  of  directors  or  controlling  shareholders  than  they  would  as  public  shareholders  of  a
company incorporated in the United States.

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We  have  been  advised  by  Harney  Westwood  &  Riegels  that  although  there  is  no  statutory  enforcement  in  the  Cayman  Islands  of
judgments  obtained  in  the  federal  or  state  courts  of  the  United  States  (and  the  Cayman  Islands  are  not  a  party  to  any  treaties  for  the
reciprocal  enforcement  or  recognition  of  such  judgments),  the  Cayman  Islands  Grand  Court  will  at  common  law  enforce  final  and
conclusive in personam judgments of state and/or federal courts of the United States of America (the Foreign Court) of a debt or definite
sum of money against the Company (other than a sum of money payable in respect of taxes or other charges of a like nature, a fine or
other penalty (which may include a multiple damages judgment in an anti-trust action) or where enforcement would be contrary to public
policy). The Grand Court of the Cayman Islands will also at common law enforce final and conclusive in personam judgments of the
Foreign Court that are non-monetary against the Company, for example, declaratory judgments ruling upon the true legal owner of shares
in  a  Cayman  Islands  company.  The  Grand  Court  will  exercise  its  discretion  in  the  enforcement  of  non-money  judgments  by  having
regard  to  the  circumstances,  such  as  considering  whether  the  principles  of  comity  apply.  To  be  treated  as  final  and  conclusive,  any
relevant judgment must be regarded as res judicata by the Foreign Court. A debt claim on a foreign judgment must be brought within six
years of the date of the judgment, and arrears of interest on a judgment debt cannot be recovered after six years from the date on which
the interest was due. The Cayman Islands courts are unlikely to enforce a judgment obtained from the Foreign Court under civil liability
provisions of U.S. federal securities law if such a judgment is found by the courts of the Cayman Islands to give rise to obligations to
make  payments  that  are  penal  or  punitive  in  nature.  Such  a  determination  has  not  yet  been  made  by  the  Grand  Court  of  the  Cayman
Islands. A Cayman Islands court may stay enforcement proceedings if concurrent proceedings are being brought elsewhere. A judgment
entered  in  default  of  appearance  by  a  defendant  who  has  had  notice  of  the  Foreign  Court’s  intention  to  proceed  may  be  final  and
conclusive notwithstanding that the Foreign Court has power to set aside its own judgment and despite the fact that it may be subject to
an  appeal  the  time-limit  for  which  has  not  yet  expired.  The  Grand  Court  may  safeguard  the  defendant’s  rights  by  granting  a  stay  of
execution pending any such appeal and may also grant interim injunctive relief as appropriate for the purpose of enforcement.

Our memorandum and articles of association contains anti-takeover provisions that could discourage a third party from acquiring us
and adversely affect the rights of holders of our ordinary shares and the ADSs.

Our memorandum and articles of association contains provisions to limit the ability of others to acquire control of our company or
cause  us  to  engage  in  change  of  control  transactions.  These  provisions  could  have  the  effect  of  depriving  our  shareholders  of  an
opportunity to sell their shares at a premium over prevailing market prices by discouraging third parties from seeking to obtain control of
our company in a tender offer or similar transaction. Our board of directors has the authority to issue preferred shares in one or more
series  and  to  fix  their  designations,  powers,  preferences,  privileges,  and  relative  participating,  optional  or  special  rights  and  the
qualifications, limitations or restrictions, including dividend rights, conversion rights, voting rights, terms of redemption and liquidation
preferences, any or all of which may be greater than the rights associated with our ordinary shares, in the form of ADS or otherwise.
Preferred  shares  could  be  issued  with  terms  calculated  to  delay  or  prevent  a  change  in  control  of  our  company  or  make  removal  of
management more difficult. If our board of directors decides to issue preferred shares, the price of our ADSs may fall and the voting and
other rights of the holders of our ordinary shares and ADSs may be materially and adversely affected.

We are a foreign private issuer within the meaning of the rules under the Exchange Act, and as such we are exempt from certain
provisions applicable to U.S. domestic public companies.

Because  we  qualify  as  a  foreign  private  issuer  under  the  Exchange  Act,  we  are  exempt  from  certain  provisions  of  the  securities

rules and regulations in the United States that are applicable to U.S. domestic issuers, including:

● the  rules  under  the  Exchange  Act  requiring  the  filing  with  the  SEC  of  quarterly  reports  on  Form  10-Q  or  current  reports  on

Form 8-K;

● the  sections  of  the  Exchange  Act  regulating  the  solicitation  of  proxies,  consents,  or  authorizations  in  respect  of  a  security

registered under the Exchange Act;

● the  sections  of  the  Exchange  Act  requiring  insiders  to  file  public  reports  of  their  stock  ownership  and  trading  activities  and

liability for insiders who profit from trades made in a short period of time; and

● the selective disclosure rules by issuers of material nonpublic information under Regulation FD promulgated by SEC.

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We are required to file an annual report on Form 20-F within four months of the end of each fiscal year. In addition, we intend to
publish  our  mid-year  results  as  press  releases,  distributed  pursuant  to  the  rules  and  regulations  of  the  Nasdaq  Stock  Market.  Press
releases relating to financial results and material events will also be furnished to the SEC on Form 6-K. However, the information we are
required to file with or furnish to the SEC will be less extensive and less timely compared to that required to be filed with the SEC by
U.S. domestic issuers. As a result, you may not be afforded the same protections or information that would be made available to you
were you investing in a U.S. domestic issuer. However, if we determine that we no longer meet the definition of a foreign private issuer
in the future, we would become subject to the reporting requirements for a domestic company.

As an exempted company incorporated in the Cayman Islands, we are permitted to adopt certain home country practices in relation to
corporate  governance  matters  that  differ  significantly  from  the  Nasdaq  Stock  Market’s  corporate  governance  requirements;  these
practices  may  afford  less  protection  to  shareholders  than  they  would  enjoy  if  we  complied  fully  with  the  Nasdaq  Stock  Market’s
corporate governance requirements.

As  a  Cayman  Islands  company  listed  on  the  Nasdaq  Stock  Market,  we  are  subject  to  the  Nasdaq  Stock  Market’s  corporate
governance  requirements.  However,  the  Nasdaq  Stock  Market  rules  permit  a  foreign  private  issuer  like  us  to  follow  the  corporate
governance practices of its home country. Certain corporate governance practices in the Cayman Islands, which is our home country, may
differ significantly from the Nasdaq Stock Market’s corporate governance requirements. For example, neither the Companies Act nor our
memorandum and articles of association requires a majority of our directors to be independent and we could include non-independent
directors as members of our compensation committee and nominating committee, and our independent directors would not necessarily
hold regularly scheduled meetings at which only independent directors are present. Additionally, our home country practices provide that
shareholder approval may not be required when a plan or other equity compensation arrangement is established or materially amended
and that we are not required to hold an annual general meeting of shareholders no later than one year after the end of its fiscal year-end.
As we have chosen, or may from time to time to choose, to follow home country practice exemptions with respect to certain corporate
matters, such as the ones mentioned above, our shareholders may be afforded less protection than they otherwise would under the Nasdaq
Stock Market’s corporate governance requirements applicable to U.S. domestic issuers. See also “Item 16G. Corporate Governance.”

We  believe  that  we  were  a  passive  foreign  investment  company  for  U.S.  federal  income  tax  purposes  for  the  taxable  year  ended
December 31, 2023, which could subject U.S. investors in our ADSs or ordinary shares to significant adverse U.S. federal income tax
consequences.

We will be classified as a passive foreign investment company, or PFIC, for any taxable year if either (i) 75% or more of our gross
income for such year consists of certain types of “passive” income or (ii) 50% or more of the value of our assets (generally determined
on the basis of quarterly average) during such year produce or are held for the production of passive income. Based upon the nature and
composition of our assets (in particular, the retention of substantial amounts of cash and investments), and the market price of our ADSs,
we believe that we were a PFIC for the taxable year ended December 31, 2023 and we will likely be a PFIC for our current taxable year
unless the market price of our ADSs significantly increases and/or we invest a substantial amount of the cash and other passive assets we
hold in assets that produce or are held for the production of active income.

If we are a PFIC in any taxable year, a U.S. Holder (as defined in “Item 10. Additional Information—E. Taxation—United States
Federal  Income  Tax  Considerations”)  will  generally  be  subject  to  reporting  requirements  and  may  incur  significantly  increased  U.S.
federal income tax on gain recognized on the sale or other disposition of the ADSs or ordinary shares and on the receipt of distributions
on the ADSs or ordinary shares to the extent such gain or distribution is treated as an “excess distribution” under the U.S. federal income
tax  rules  and  such  U.S.  Holder  may  be  subject  to  burdensome  reporting  requirements.  Further,  if  we  are  a  PFIC  for  any  year  during
which  a  U.S.  Holder  holds  our  ADSs  or  ordinary  shares,  we  generally  will  continue  to  be  treated  as  a  PFIC  for  all  succeeding  years
during which such U.S. Holder holds our ADSs or ordinary shares, unless we were to cease to be a PFIC and the U.S. Holder were to
make a “deemed sale” election with respect to the ADSs or ordinary shares. For more information see “Item 10. Additional Information
—E. Taxation—United States Federal Income Tax Considerations—Passive Foreign Investment Company Considerations” and “Item 10.
Additional  Information—E.  Taxation—United  States  Federal  Income  Tax  Considerations—Passive  Foreign  Investment  Company
Rules.”

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ITEM 4.

INFORMATION ON THE COMPANY

A. History and Development of the Company

We  commenced  our  operations  in  November  2014,  when  our  predecessor  Third  Venture  Biopharma  (Nanjing)  Co.,  Ltd  was

established.

I-Mab was established in June 2016 under the laws of the Cayman Islands as our offshore holding company. In July 2016, I-Mab
established I-Mab Biopharma Hong Kong Limited, or I-Mab Hong Kong, as its intermediary holding company. In August 2016, I-Mab
Hong Kong established a wholly-owned PRC subsidiary, I-Mab Biopharma Co., Ltd., or I-Mab Shanghai. In September 2016, the assets
and operations of Third Venture Biopharma (Nanjing) Co., Ltd were consolidated into I-Mab Shanghai.

In July 2017, I-Mab Hong Kong acquired a controlling interest in I-Mab Bio-tech (Tianjin) Co., Ltd., or I-Mab Tianjin, formerly
known as Tasgen Bio-tech (Tianjin) Co., Ltd., a company focused on the chemistry, manufacturing and controls of biologics in China.
Through an internal corporate restructuring, I-Mab Tianjin became the 100% owner of I-Mab Shanghai in September 2017 and I-Mab
Hong Kong acquired the remaining interest in I-Mab Tianjin in May 2018, becoming the 100% owner of I-Mab Tianjin.

In  February  2018,  I-Mab  Hong  Kong  established  in  Maryland,  United  States,  a  wholly-owned  subsidiary  I-Mab  Biopharma  US

Limited, or I-Mab US, as the hub for the discovery and development of the drug candidates in our Global portfolio.

On January 17, 2020, our ADSs commenced trading on the Nasdaq Global Market under the symbol “IMAB.”

In 2020, we invested in a comprehensive biologics manufacturing facility in Hangzhou, China as part of our strategic plan to become
a specialty biopharma company. The construction of this facility commenced in April 2021. This facility established a pilot capacity of
two  production  lines.  The  project  was  financed  by  a  combination  of  internal  and  external  sources.  In  September  2020,  a  group  of
domestic  investors  in  China  invested  a  total  of  US$120  million  (in  RMB  equivalent)  in  cash.  Upon  the  closing  of  this  project,  we,
through our wholly-owned subsidiary and parties acting in concert, were a majority shareholder of I-Mab Biopharma (Hangzhou) Co.,
Ltd.,  or  I-Mab  Hangzhou,  the  entity  holding  the  facility  in  Hangzhou.  On  July  16,  2022,  I-Mab  Hangzhou  entered  into  a  definitive
financing agreement with a group of domestic investors in China to raise approximately US$46 million (in RMB equivalent). Upon the
closing  of  the  financing,  we,  through  our  wholly-owned  subsidiary,  became  the  largest  shareholder  of  I-Mab  Hangzhou.  Upon  the
occurrence  of  certain  triggering  events  as  specified  in  the  shareholders  agreement  among  I-Mab  Hangzhou,  we,  through  our  wholly-
owned  subsidiary,  and  other  domestic  investors,  including  but  not  limited  to,  I-Mab  Hangzhou’s  failure  to  accomplish  certain  public
offering condition, may be obligated to repurchase the equity held by other domestic investors in cash or in our securities in the period
beyond  12  months.  On  February  6,  2024,  in  connection  with  the  divestiture  of  the  Greater  China  assets  and  business  operations,  we
transferred the equity interests we held, through our wholly-owned subsidiary, in I-Mab Hangzhou to certain participating shareholders
of  I-Mab  Hangzhou  in  exchange  for  extinguishment  of  the  existing  repurchase  obligations  owed  by  I-Mab  Hong  Kong  to  those
shareholders  in  the  amount  of  approximately  US$183  million.  However,  the  non-participating  shareholders  of  I-Mab  Hangzhou  have
initiated legal proceedings against I-Mab Hong Kong and our company in connection with the aforementioned transaction. See “Item 8.
Financial Information—A. Consolidated Statements of Other Financial Information—Legal Proceedings.” The total amount of potential
repurchase obligations owed to the non-participating shareholders upon the closing of the transaction is expected to range from US$30
million to US$35 million. Concurrently with the divestiture, we also participated in the Series C fundraising of I-Mab Hangzhou. See
Note 8 and Note 22 to our consolidated financial statements included elsewhere in this annual report for additional information of our
investment in I-Mab Hangzhou.

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In  September  2020,  we,  through  I-Mab  Shanghai  and  I-Mab  US,  entered  into  a  broad  global  collaboration  with  AbbVie  Ireland
Unlimited Company, or AbbVie, a leading global, research-based biopharmaceutical company. Pursuant to this collaboration, we grant
AbbVie a global license, excluding mainland China, Hong Kong and Macau, to develop and commercialize lemzoparlimab. In August
2022,  we  and  AbbVie  Global  Enterprises  Ltd.,  the  assignee  of  AbbVie,  entered  into  an  amendment  to  the  original  collaboration
agreement.  This  amended  agreement  is  referred  as  the  AbbVie  Collaboration  Agreement.  Pursuant  to  the  AbbVie  Collaboration
Agreement, the parties collaborated on the global development of anti-CD47 antibody therapy, and we regained the exclusive right to
develop and commercialize all licensed products under the amended collaboration agreement in Greater China. AbbVie discontinued the
global  Phase  1b  study  of  lemzoparlimab  combination  therapy  with  azacitidine  and  venetoclax,  in  patients  with  myelodysplastic
syndromes and acute myeloid leukemia, and a Phase 1b study of lemzoparlimab in patients with relapsed/refractory multiple myeloma.
These  discontinuations  were  not  related  to  any  specific  or  unexpected  safety  concerns.  On  September  21,  2023,  we  received  a  notice
from  AbbVie,  terminating  the  AbbVie  Collaboration  Agreement  in  its  entirety.  Such  termination  by  AbbVie,  which  took  effect  on
November 20, 2023, is based on the previous program discontinuation and AbbVie’s strategic decision and did not and will not affect the
upfront  and  milestone  payments  of  US$200  million  that  we  have  received  from  AbbVie.  Upon  the  termination,  we  regained  the  full
global  rights  to  develop  and  commercialize  certain  CD47  compounds  and  products  under  the  AbbVie  Collaboration  Agreement,
including lemzoparlimab. As of the date of this annual report, AbbVie has paid us an upfront payment of US$180 million and milestone
payment of US$20 million. On February 6, 2024, we entered into definitive agreements with I-Mab Hangzhou and a group of China-
based  investors  to  divest  the  Greater  China  assets  and  business  operations.  Upon  the  completion  of  such  divestiture,  we  own  the  ex-
Greater China rights to develop and commercialize certain CD47 compounds and products, including lemzoparlimab.

In October 2023, we divested the 51% equity interest in Zhejiang Tianli Pharmaceutical Sales Co., Ltd. previously held by I-Mab

Biopharma Co., Ltd.

On February 6, 2024, we entered into definitive agreements with I-Mab Hangzhou and a group of China-based investors to divest
the Greater China assets and business operations. Pursuant to the definitive agreements, we transferred 100% of the outstanding equity
interest in I-Mab Biopharma Co., Ltd., or I-Mab Shanghai, that operates our business in China, on a cash-free and debt-free basis, to I-
Mab  Hangzhou  for  an  aggregate  consideration  of  the  RMB  equivalent  of  up  to  US$80  million,  contingent  on  I-Mab  Hangzhou’s
achievement of certain future regulatory and sales-based milestone events. We also retain a right of first negotiation outside of Greater
China  related  to  three  future  investigational  new  drug  candidates.  In  addition,  as  credit  enhancement  measures  for  payment  of  the
consideration, I-Mab Hangzhou will secure a bank facility or a loan with the amount no less than US$20 million. In connection with the
divestiture,  we  have  transferred  the  equity  interests  we  held  through  our  wholly-owned  subsidiary  in  I-Mab  Hangzhou  to  certain
participating  shareholders  of  I-Mab  Hangzhou  in  exchange  for  extinguishment  of  the  existing  repurchase  obligations  owed  by  I-Mab
Hong Kong to those shareholders in the amount of approximately US$183 million. However, the non-participating shareholders of I-Mab
Hangzhou  have  initiated  legal  proceedings  against  I-Mab  Hong  Kong  and  our  company  in  connection  with  the  aforementioned
transaction.  The  total  amount  of  potential  repurchase  obligations  owed  to  the  non-participating  shareholders  upon  the  closing  of  the
transaction is expected to range from US$30 million to US$35 million. In light of the divestiture of the Greater China assets and business
operations, we are no longer considering listing our shares in Shanghai or Hong Kong as previously announced in 2021.

Our principal executive offices are located at 2440 Research Boulevard, Suite 400, Rockville, MD 20850, the United States. Our

telephone number at this address is (240) 745-6330.

Our registered office in the Cayman Islands is located at Vistra (Cayman) Limited, P.O. Box 31119 Grand Pavilion, Hibiscus Way,

802 West Bay Road, Grand Cayman, KY1-1205, Cayman Islands.

All  information  filed  with  the  SEC  can  be  obtained  over  the  internet  at  SEC’s  website  at  https://www.sec.gov.  You  can  also  find

information on our website ir.i-mabbiopharma.com. The information contained on our website is not a part of this annual report.

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B. Business Overview

Executive Summary

In  2023,  we  faced  a  series  of  risks,  including  macroeconomic  and  geopolitical  headwinds,  which  prompted  us  to  re-position  our
overall  business  in  response  to  these  challenges,  while  focusing  on  re-prioritizing  the  pipeline  development  to  deliver  on  key  clinical
milestones.  The  execution  of  these  strategies  resulted  in  a  streamlined  workforce  and  development  activities  focusing  on  key  clinical
stage  pipeline  assets.  On  February  6,  2024,  we  entered  into  definitive  agreements  with  I-Mab  Hangzhou  and  a  group  of  China-based
investors to divest the Greater China assets and business operations. Pursuant to the definitive agreements, we have transferred 100% of
the outstanding equity interest in I-Mab Biopharma Co., Ltd. that operates our business in China, on a cash-free and debt-free basis, to I-
Mab  Hangzhou  for  an  aggregate  consideration  of  the  RMB  equivalent  of  up  to  US$80  million,  contingent  on  I-Mab  Hangzhou’s
achievement of certain future regulatory and sales-based milestone events. Following the completion of the divestiture, we do not own
any rights to the Greater China portfolio. Collectively, we are now in a solid position to continue to deliver the expected key catalysts and
value through clinical stage pipeline assets and global partnerships with a more prudent expenditure strategy to support our key business
operations.

More  specifically,  we  made  significant  progress  in  our  pipeline  development  by  focusing  on  our  global  oncology  clinical  assets:
uliledlimab, givastomig (TJ-CD4B) and ragistomig (TJ-L14B). Substantial achievements in 2023 included: (1) completed enrollment of
over  200  patients  to  ongoing  Phase  2  study  of  uliledlimab  in  combination  with  toripalimab  (a  PD-1  inhibitor);  (2)  presentation  of
uliledlimab Phase 2 data at American Society of Clinical Oncology for patients with newly diagnosed, metastatic NSCLC achieving a
31% objective response rate with the chemotherapy-free regimen and a 63% objective response rate amongst patients with PD-L1 and
CD73  high  expressing  tumors;  (3)  presentation  of  givastomig  monotherapy  dose  escalation  data  at  European  Society  of  Medical
Oncology  reporting  efficacy  and  a  potentially  differentiated  safety  profile  without  severe  vomiting;  (4)  completed  enrollment  of  the
planned expansion cohort of givastomig monotherapy for patients with previously treated Claudin18.2 expressing gastric or esophageal
cancer  and  amended  the  study  to  add  patient  cohorts  with  newly  diagnosed  Claudin18.2  expressing  gastric  or  esophageal  cancer  in
combination with chemotherapy and an immune checkpoint inhibitor to begin enrollment in the first half of 2024; and (5) reported signs
of  monotherapy  efficacy  with  ragistomig  amongst  patients  with  previously  treated  solid  tumors,  including  patients  previously  treated
with immune checkpoint inhibitors with plans for academic presentation in the first half of 2024.

Our Drug Pipeline

Uliledlimab (TJD5): A Highly Differentiated CD73 Antibody for Solid Tumors

Summary

Uliledlimab  is  a  CD73  neutralizing  antibody  with  potential  to  block  nearly  100%  enzymatic  activity.  CD73  is  a  homodimeric
enzyme  widely  expressed  in  multiple  tumors  and  plays  a  critical  role  in  the  generation  of  adenosine,  contributing  to  an  immuno-
suppressive tumor microenvironment. The key differentiation of uliledlimab, when compared to some of the other clinical-stage CD73
antibodies, is related to its novel epitope, which works through a unique intra-dimer binding mode, resulting in complete inhibition of the
enzymatic activity and avoiding the aberrant pharmacological property known as the “hook effect.” In addition, uliledlimab has a non-
competitive  inhibitory  effect  that  is  not  blunted  by  high  levels  of  CD73  enzyme  substrates,  which  may  be  seen  with  small-molecule
competitive blockers. Preclinical studies have shown that uliledlimab can completely reverse the adenosine-mediated suppression of T
cells in vitro.  When  combined  with  a  PD-(L)1  antibody  in vivo,  uliledlimab  exhibited  a  superior  and  synergistic  inhibitory  effect  on
tumor growth compared to PD-(L)1 monotherapy.

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In the U.S., we have completed the initial assessment of a Phase 1 clinical study where uliledlimab was evaluated as a monotherapy
lead-in and followed by combining with atezolizumab (Tecentriq®) in patients with solid tumors. Topline results from this study showed
that  uliledlimab  is  safe  and  well-tolerated  across  all  the  dose  cohorts  evaluated.  The  data  demonstrated  a  favorable  linear
pharmacokinetic and steep pharmacokinetic/pharmacodynamic relationship with complete receptor occupancy as expected based upon
the normal dose-response property of uliledlimab without the hook effect. Furthermore, encouraging clinical efficacy signals from this
study were observed in non-small cell lung cancer and ovarian cancer patients with higher CD73 and PD-L1 co-expression in the tumor,
indicating  a  potential  correlation  between  the  clinical  activity  of  uliledlimab  and  tumor  CD73  expression  as  a  potential  predictive
biomarker that warrants further investigation.

Supported  by  the  results  of  the  Phase  1  study,  our  Phase  2  studies  further  evaluated  the  efficacy  and  safety  of  uliledlimab  in
combination  with  checkpoint  inhibitors  in  Stage  IV  NSCLC  and  other  select  tumor  types.  The  Phase  2  cohort  data  of  uliledlimab  in
combination  with  toripalimab  (TUOYI®),  a  programmed  cell  death  protein  (PD-1)  inhibitor,  in  patients  with  Stage  IV  NSCLC  were
presented in June 2023 at the 2023 ASCO annual meeting. Results from an ongoing Phase 2 study of uliledlimab in combination with
toripalimab  showed  a  favorable  safety  profile  and  an  encouraging  objective  response  rate  of  31%  (21/67)  in  the  overall  population
regardless of CD73 and programmed cell death ligand (PD-L1) expression. In this study, without concomitant chemotherapy, in patients
whose tumors expressed higher levels of CD73 and had a PD-L1 tumor proportion score of >1%, the observed complete response rate
was 63% (10/16).

Competitive Landscape

The  most  advanced  CD73  antibody  currently 

(MEDI-9447)  sponsored  by
Medimmune/AstraZeneca,  which  has  initiated  a  Phase  3,  double-blinded,  placebo-controlled,  randomized  study  of  durvalumab  plus
oleclumab in patients with locally advanced (Stage III), unresectable NSCLC who have not progressed following definitive, platinum-
based concurrent chemoradiation therapy. Data from the COAST Phase 2 trial and NeoCOAST Phase 2 trials showed that the addition of
oleclumab  to  durvalumab  enhanced  anti-tumor  immune  responses  in  patients  with  NSCLC.  AK119  (from  AkesoBio)  was  in  Phase  1
clinical development for solid tumors. Arcus Biosciences had also reported encouraging results in their Phase 1b/2 trial of quemliclustat,
a small molecule CD73 inhibitor, in combination with zimberelimab plus chemotherapy in patients with pancreatic cancer.

in  clinical  development 

is  oleclumab 

Molecular Differentiation of Uliledlimab

Extracellular AMP can be generated from ATP, cyclic AMP, and nicotinamide adenine dinucleotide through separate biochemical
pathways, all of which converge to CD73 as a rate-limiting enzyme to generate adenosine. Thus, the CD73 antibody is expected to block
adenosine generation more completely than other upstream targets in the adenosine pathway. The key advantages of uliledlimab when
compared with other CD73 antibodies or small molecule inhibitors can be summarized as follows: (1) uliledlimab exhibits a typical dose-
response curve without the “hook effect” to achieve the complete inhibition of both soluble and surface-bound CD73; and (2) uliledlimab
has  a  non-competitive  inhibitory  effect  that  is  not  blunted  by  high  levels  of  CD73  enzyme  substrates,  which  may  occur  with  small-
molecule  competitive  blockers.  These  pharmacological  properties  may  translate  into  efficient  target  inhibition  in  tumors  and  superior
anti-tumor activity, especially in an adenosine-rich micro-environment.

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Biochemically, uliledlimab displayed complete inhibition of soluble CD73 enzymatic activity (IC50 = 0.22 n M) without the “hook
effect”  in  contrast  to  the  comparator  molecules,  which  at  higher  concentrations  caused  a  paradoxical  rebound  of  enzymatic  activity
presumably  due  to  its  inter-dimer  binding  mode.  The  recent  structural  data  revealed  by  cryo-EM  showed  that  uliledlimab  binds  to  a
unique epitope located at the C-terminus of CD73 dimer distinct from other CD73 antibodies, including oleclumab, all of which bind to
the  N-terminus  of  CD73.  With  this  unique  epitope,  uliledlimab  adopts  a  differentiated  intra-dimer  binding  mode  to  prevent  the
conformational change of CD73 from inactive to the active form, resulting in the complete inhibition of CD73 enzymatic activity without
causing a “hook effect.”

Figure: Inhibition of soluble CD73 enzymatic activity and the binding epitope of CD73 antibodies.

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Immunologically,  AMP  inhibited  interferon-gamma  (IFN-γ)  production  by  CD4  or  CD8  T  cells  through  adenosine  generation,
mimicking  the  suppressive  tumor  micro-environment  where  AMP  is  abundantly  produced.  However,  this  suppression  is  reversed  by
uliledlimab in a concentration-dependent manner. Moreover, in an experimental system where CD73 high human ovarian cell line SK-
OV-3  and  human  T  cells  were  co-cultured,  the  addition  of  uliledlimab  restored  T  cell  activity  as  measured  by  IFN-γ  production  in  a
concentration-dependent manner. In addition to the reversal of AMP-mediated T cell suppression, uliledlimab treatment activates human
B  cells,  as  evidenced  by  the  up-regulation  of  activation  markers  CD69  and  CD83,  as  well  as  antigen  presentation  markers  CD86  and
HLA-DR. Compared with T cells, the effects of uliledlimab on B cells were adenosine independent.

Consistent  with  the  in  vitro  results,  in  vivo  monotherapy  of  uliledlimab  dose-dependently  inhibited  in  situ  tumor-derived  CD73
activity,  leading  to  the  anti-tumor  effect  in  a  mouse  xenograft  model  bearing  A375  melanoma  cells.  To  examine  whether  uliledlimab
could enhance the anti-tumor activity of PD-1 or PD-L1 antibodies, we evaluated the therapeutic effects of uliledlimab in combination
with a PD-1 antibody in the MC38 model using CD73 humanized mouse and PD-L1 antibody in the A375 xenograft model, respectively.
The combination treatments resulted in more potent inhibition of tumor growth than monotherapy of PD-(L)1 antibody or uliledlimab.

Figure: Inhibition of tumor growth and in situ CD73 activity by uliledlimab alone or in combination with a PD-1 or PD-L1 antibody.

Summary of Clinical Results

Phase 1 dose-escalation study in combination with atezolizumab

Data  from  the  U.S.  Phase  1  dose-escalation  study  of  uliledlimab  in  combination  with  atezolizumab,  which  were  presented  at  the
2021 ASCO annual meeting, showed that uliledlimab is safe and well-tolerated with no dose-limiting toxicity across all the dose cohorts
in  combination  with  atezolizumab.  All  treatment-related  adverse  events  were  either  Grade  1  or  Grade  2.  Uliledlimab  demonstrated  a
linear pharmacokinetic profile and reached full receptor occupancy on B cells at the middle and high dose levels with no “hook effect,”
confirming a normal pharmacokinetic/pharmacodynamic relationship and sigmoid dose-activity response.

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Patients  who  participated  in  the  study  had  advanced  cancers  and  had  exhausted  other  cancer  therapies.  Among  the  13  efficacy-
evaluable patients dosed at 10 mg/kg or higher, three patients had complete or partial responses (complete response rate = 23%) and three
had stable disease (disease control rate = 46%). The range of time on treatment for the six patients with a response and stable disease was
from 187 to 485 days. The clinical activity was observed in both PD-(L)1 treatment naïve and refractory cancer patients, including one
partial response patient who previously failed nivolumab. All three responders were identified to exhibit higher co-expression of tumor
CD73  and  PD-L1  as  compared  to  non-responders,  indicating  a  correlation  between  higher  CD73  expression  and  clinical  activity  of
uliledlimab and a potential role of CD73 as a predictive biomarker to warrant further investigation.

Figure: Treatment duration for the combination therapy of uliledlimab and atezolizumab. Baseline expression of PD-L1 and CD73 in

the tumor as measured by immunohistochemistry in responders (n=3) and non-responders (n=10).

Phase 2 clinical study of uliledlimab in combination with PD-1 antibody (toripalimab) in advanced NSCLC

In  June  2023,  we  presented  the  encouraging  clinical  results  of  Phase  1b/2  study  (NCT04322006)  evaluating  uliledlimab  in
combination  with  toripalimab  (TUOYI®)  in  patients  with  NSCLC  at  the  2023  ASCO  annual  meeting.  The  data  are  part  of  a  dose
expansion  portion  of  a  Phase  1b/2  trial  evaluating  the  safety  and  efficacy  of  the  combination  therapy  and  investigating  the  potential
correlation between tumor CD73 expression and clinical response for patients with advanced cancer.

As  of  April  14,  2023,  70  patients  had  been  enrolled  in  the  Phase  1b/2  cohort  of  uliledlimab  and  PD-1  combination  therapy  for
patients  with  Stage  IV  NSCLC  who  were  ineligible  for  chemotherapy.  Results  from  an  ongoing  Phase  2  study  of  uliledlimab  in
combination with toripalimab, a PD-1 inhibitor, showed a favorable safety profile and an encouraging objective response rate of 31%
(21/67) in the overall population regardless of CD73 and PD-L1 expression. In this study, without concomitant chemotherapy, in patients
whose tumors expressed higher levels of CD73 and had a PD-L1 tumor proportion score of >1%, the observed complete response rate
was 63% (10/16).

Clinical Development Plan

Following the divestiture of the Greater China assets and business operations, we are now focused on advancing innovative therapies
involving uliledlimab outside Greater China. In the U.S., we plan to submit an IND for uliledlimab in combination with chemotherapy
and checkpoint inhibitors in newly diagnosed patients with advanced NSCLC in the first half of 2024.

Givastomig (TJ-CD4B): A Novel, Tumor-Dependent T Cell Engager for Gastric and Other Cancers

Summary

Givastomig  is  a  bi-specific  antibody  targeting  Claudin18.2  (CLDN18.2),  a  tumor  antigen  preferentially  expressed  in  gastric,
esophageal,  and  pancreatic  cancers,  and  then  bind  to  4-1BB,  a  co-stimulatory  molecule  on  T  cells,  on  cells  adjacent  to  CLDN18.2
positive cells. CLDN18.2 is a tight junction molecule normally restricted to epithelial cells of the gastric mucosa, but becomes widely
expressed in select tumors, such as gastric, esophageal, and pancreatic cancers, making it a highly attractive tumor target.

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In collaboration with ABL Bio, we developed givastomig, also known as ABL111, which provides two key advantages over current
CLDN18.2 antibodies and 4-1BB agonistic antibodies. Firstly, givastomig, also known as TJ033721, can bind to tumor cells even with
low levels of CLDN18.2 expression, making it potentially for a broader patient population with various expression levels of CLDN18.2.
Secondly,  only  upon  tumor  cell  engagement  by  givastomig  are  T  cells  stimulated  by  the  4-1BB  antibody  moiety,  making  the  4-1BB
antibody arm only active at the tumor site. This localized T cell activation is conditional upon CLDN18.2 engagement and is expected to
exert strong anti-tumor activity while minimizing systemic side effects such as liver toxicity seen with 4-1BB agents in previous clinical
studies. Givastomig appears to effectively maintain a strong tumor binding property and anti-tumor activity attributable to a synergistic
effect  of  both  CLDN18.2  antibody  and  4-1BB  antibody  while  avoiding  or  minimizing  liver  toxicity  and  systemic  immunotoxicity
commonly seen with 4-1BB antibodies as a drug class.

In  November  2021,  we  and  ABL  Bio  jointly  announced  the  pharmacodynamic  data  and  safety  of  givastomig/ABL111  in  animal
models  and  cell  cultures  at  the  2021  SITC  annual  meeting.  The  data  are  summarized  as  below:  (1)  Potent  anti-tumor  activity  was
observed  with  the  proliferation  of  immune  cells  within  the  tumor  microenvironment  as  well  as  an  increase  in  memory  T  cells  in  the
peripheral blood, suggesting long-term immunity against the tumor; (2) Givastomig was well tolerated in non-human primates and did
not  induce  a  systemic  immune  response  or  liver  toxicity  up  to  levels  of  100  mg/kg;  and  (3)  Activation  of  immune  pathways  by
givastomig  was  demonstrated  by  a  pro-inflammatory  profile  and  increased  gamma  interferon-regulated  gene  expression  in  primary
human CD8+ T cells co-cultured with CLDN18.2 expressing cells. In March 2022, we announced that the U.S. FDA granted givastomig
Orphan Drug Designation for the treatment of gastric cancer, including gastroesophageal junction carcinoma.

In October 2023, we presented the topline Phase 1 data of givastomig with promising early efficacy signals, including patients with
low levels of CLDN18.2 tumor expression, at the ESMO annual meeting. Phase 1 dose escalation has reached the highest planned dose
level. Most treatment-related adverse events were low-grade. In this study, encouraging findings of monotherapy efficacy were observed,
including in tumors with lower levels of CLDN18.2 expression, in patients with previously treated cancer that has relapsed or progressed
after prior standard treatments.

Following  the  divestiture  of  the  Greater  China  assets  and  business  operations,  we  no  longer  own  the  rights  to  develop  and
commercialize  givastomig  in  Greater  China.  We  expect  to  continue  to  sponsor  a  Phase  1  study  of  givastomig  in  combination  with
chemotherapy and a PD-1 inhibitor in patients with treatment-naïve gastric, gastro-esophageal junction and esophageal cancer at both the
U.S.  and  China  investigational  sites.  In  parallel,  we  are  developing  a  CLDN18.2  immunohistochemistry  assay  for  patient  selection,
which  we  expect  to  use  in  our  future  clinical  studies.  Furthermore,  we  are  in  the  process  of  exploring  potential  global  partnership
opportunities for givastomig.

Therapeutic Indications

Gastric cancer is one of the leading causes of cancer-related deaths worldwide. Treatment for advanced gastric, gastro-esophageal
junction,  or  esophageal  adenocarcinoma  often  involves  a  combination  of  chemotherapy  and  now,  immune  therapies.  However,  the
clinical  benefit  remains  modest  with  the  current  therapies.  Therefore,  there  is  a  significant  unmet  medical  need  as  most  patients  with
metastatic cancer will die as a result of the cancer. While CLDN18.2 is a recently recognized tumor marker, clinical data indicated that
over 70% of GC patients in Asia and Europe have tumors expressing CLDN18.2, although the levels of CLDN18.2 expression may be
lower for many patients than what earlier generations of CLDN18.2 targeting therapies were designed to treat.  

Potential Advantages of Givastomig

Givastomig is a novel bi-specific antibody, with one arm targeting CLDN18.2 and the other targeting 4-1BB through conditional or
local activation. The key differentiation of givastomig is two-fold. Firstly, it binds to tumors with a wide range of CLDN18.2 expression
levels, including lower expression, as demonstrated in pre-clinical animal models. Secondly, the 4-1BB arm of givastomig is designed to
function upon local tumor engagement as a mechanism of conditional activation. This feature makes givastomig a unique T cell activator
only localized at the tumor site without relevant systemic toxicities, e.g. liver toxicity and systemic cytokine release, that are typically
associated  with  4-1BB.  In  addition,  givastomig  exhibits  less  gastrointestinal  toxicity  than  what  is  commonly  observed  for  other
CLDN18.2 targeted therapeutics.

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Moreover, unlike previous generations of 4-1BB agonist antibodies with hepatotoxicity issues, givastomig binds to a distinct 4-1BB
epitope  that  only  triggers  4-1BB  signaling  upon  CLDN18.2  target  engagement  but  not  Fc  receptor  interaction.  This  unique  tumor-
associated  antigen-dependent  property  is  expected  to  drastically  reduce  peripheral  T  cell  activation  and  hepatic  and  systemic
immunotoxicity  without  compromising  anti-tumor  activity.  If  proven  in  the  clinic,  these  properties  enable  givastomig  to  be  highly
differentiated from other CLDN18.2-based compounds.

Figure: Schematic diagram of the overall structure of givastomig and its components. The 4-1BB agonistic antibody is a single-chain Fv
connected  to  the  C-terminus  of  a  disabled  Fc  in  a  full  anti-CLDNJ8.2  antibody  via  a  flexible  linker.  The  design  allows  the
molecule to fit in the immune synapse (left) and trans-activate T cells only upon tumor cell binding.

Molecular Differentiation of Givastomig

Broad  and  potent  binding  to  CLDN18.2  positive  cells  by  givastomig.  As  shown  in  the  figure  below,  givastomig  consistently

exhibited stronger binding than the reference antibody zolbetuximab in cells with high, moderate, and even low levels of CLDN18.2.

Figure: More potent binding by givastomig than zolbetuximab to cells expressing various levels of CLDN18.2.

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CLDN18.2-dependent 4-1BB Activation and T Cell Activity by givastomig. The ability of givastomig to ligate 4-1BB and activate
downstream signaling was tested in a co-culture of CLDN18.2-positive or negative target cells with T cells as effectors. The results in the
figure show that givastomig elicited by far the strongest 4-1BB-mediated NF-kB reporter activity, only in the presence of CLDN18.2+
cells  but  not  CLDN18.2-cells.  In  contrast,  urelumab  (first  generation  4-1BB  antibody)  induced  NF-kB  reporter  activity  regardless  of
target cell CLDN18.2 expression. In another experiment where human PBMCs were co-cultured with gastric cancer cells derived from
patient biopsies, givastomig was found to increase IL-2 production in a dose-dependent and CLDN18.2 expression-dependent manner.

Figure: Dose-dependent CLDN18.2-restricted T cell activity by givastomig but not urelumab in T cell and target cell co-culture system.

Left, co-culture scheme; Middle, NF-kB reporter activity; Right, IL-2 production.

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Superior  in  vivo  Anti-tumor  Efficacy  of  Givastomig.  In  mice  grafted  with  tumor  cells  expressing  human  CLDN18.2,  givastomig
treatment twice a week for three weeks completely suppressed tumor cell growth in six out of seven mice, delivering far better efficacy
than equimolar doses of single agent drugs targeting CLDN18.2 or 4-1BB alone or in combination. Remarkably, when these tumor-free
mice  were  re-challenged  with  a  second  tumor  implant  a  month  after  drug  cessation,  they  remained  totally  protected  from  tumor
implantation, indicating that givastomig produced a durable anti-tumor response. Immune cell analysis revealed a significant increase in
CD45+  and  CD8+  T  cells  that  infiltrated  the  tumor  tissue  after  givastomig  treatment,  but  there  were  no  changes  in  the  periphery,
suggesting that givastomig could turn a cold tumor into a hot tumor, and the effect was localized. The anti-tumor efficacy of givastomig
was dose-dependent, with a minimal efficacious dose of 0.4 mg/kg.

Figure: Potent in vivo anti-tumor activity of givastomig in a mouse tumor model. Mice transgenic for humanized 4-1BB were grafted
with  MC38  cells  expressing  human  CLDN18.2.  Mice  were  treated  with  IgG  or  zolbetuximab  as  control,  or  with  parental
CLDN18.2 mAb, parental 4-1BB mAb, or both, and with givastomig (4 mg/kg) twice a week for 3 weeks. All mAbs were dosed at
the molar equivalent of 3 mg/kg.

Preclinical Pharmacodynamics and Safety. The pharmacodynamic data and safety of givastomig in animal models and cell cultures
were jointly announced by I-Mab and ABL Bio, Inc. at the 2021 SITC annual meeting. Analysis of the data found: (1) Potent anti-tumor
activity was observed with the proliferation of immune cells in the tumor microenvironment as well as an increase in memory T cells in
the peripheral blood, suggesting long-term immunity against the tumor; (2) Givastomig was well tolerated in non-human primates and
did  not  induce  a  systemic  immune  response  or  liver  toxicity  up  to  levels  of  100mg/kg;  and  (3)  Activation  of  immune  pathways  by
givastomig/ABL111  was  demonstrated  by  a  pro-inflammatory  profile  and  increased  gamma  interferon-regulated  gene  expression  in
primary human CD8+ T cells co-cultured with CLDN18.2 expressing cells. In the four-week good laboratory practice monkey toxicity
study,  givastomig  was  well  tolerated  with  no  major  findings.  There  was  no  liver  toxicity  noted,  nor  was  there  evidence  of  systemic
immune activation. There were mild stomach changes that were considered on-target but non-adverse and were reversible. NOAEL was
determined to be 100 mg/kg with a sufficient therapeutic window.

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Summary of Clinical Results

Phase 1 clinical trial of givastomig in patients with advanced or metastatic solid tumors:

The dose escalation part of the study reached 15 mg/kg without encountering dose limiting toxicity. By the end of 2022, eight dose
cohorts had been completed, with 38 subjects dosed. Givastomig was well tolerated, most of the treatment-related adverse events were
grade  1  or  2  and  no  dose  limiting  toxicity  was  reported.  There  is  a  dose-dependent  increase  of  drug  exposure  and  soluble  4-1BB  in
serum,  suggestive  of  a  favorable  pharmacokinetic/pharmacodynamic  profile  with  durable  T  cell  activation  and  the  potential  to  test  a
longer dosing interval in the future. Partial response and stable disease signals of givastomig monotherapy efficacy were observed across
efficacious dose levels in patients with gastric and esophageal cancer whose cancer had progressed after multiple lines of prior therapies,
including  PD-1  therapy.  Encouragingly,  efficacy  signals  were  also  observed  in  patients  with  low  CLDN18.2  expression,  indicating  its
potential  to  treat  CLDN18.2  low-expressing  tumors  where  other  CLDN18.2  targeted  agents  have  shown  a  limited  treatment  effect.  In
October 2023, we presented the topline Phase 1 data of givastomig with promising early efficacy signals, including patients with low
levels of CLDN18.2 tumor expression, at the ESMO annual meeting. Phase 1 dose escalation has reached the highest planned dose level.
Most treatment-related adverse events have been low-grade. In this study, encouraging findings of monotherapy efficacy were observed,
including in tumors with lower levels of CLDN18.2 expression, in patients with previously treated cancer that has relapsed or progressed
after prior standard treatments.

Clinical Development Plan

Following  the  divestiture  of  the  Greater  China  assets  and  business  operations,  we  do  not  own  the  rights  to  develop  and
commercialize givastomig in Greater China. The Phase 1 study, which was still ongoing at the time of divestiture, is a global study with
sites and patients enrolled in both the U.S. and China. We expect to continue to sponsor this study in both the U.S. and China territories.
More data from the ongoing study are anticipated in the first half of 2024, with potential for presentation at academic meetings in the
second half of 2024. In addition, dose escalation in combination with standard chemotherapy and immunotherapy regimens for patients
with  treatment  naïve  gastric,  gastro-esophageal  junction,  and  esophageal  cancer  began  in  the  first  quarter  of  2024.  In  parallel,  we  are
developing  a  CLDN18.2  immunohistochemistry  assay  for  patient  selection,  which  we  expect  to  use  in  our  future  clinical  studies.
Furthermore, we are in the process of exploring potential global partnership opportunities for givastomig.

Ragistomig (TJ-L14B): A PD-L1-Based Tumor-Dependent T-Cell Engager for Solid Tumors

Summary

Ragistomig, also known as TJ-L14B or ABL503, is a bi-specific antibody targeting both PD-L1 and 4-1BB and was developed in
collaboration with ABL Bio. It was designed to improve the efficacy of anti-PD-(L)1 therapies while mitigating the potential toxicity
associated  with  earlier  4-1BB-directed  therapies.  Similar  to  givastomig,  4-1BB-stimulated  T  cell  activity  only  occurs  upon  tumor  cell
binding  by  the  anti-PD-L1  part  of  ragistomig.  This  localized  T  cell  activation  is  expected  to  exert  strong  anti-tumor  activity  while
reducing  systemic  side  effects  such  as  liver  toxicity.  In  a  humanized  mouse  tumor  model,  a  short  course  of  ragistomig  treatment
displayed  greater  anti-tumor  efficacy  than  anti-PD-L1  or  anti-4-1BB  antibodies  alone  or  in  combination  and  showed  evidence  of
immunological memory response that resisted tumor re-challenge. We share the global rights with ABL Bio for ragistomig, except for in
Greater China and South Korea where ABL Bio has sole rights. In September 2023, ragistomig successfully obtained patent registration
in  eight  Eurasian  countries.  The  patent,  officially  named  “Anti-PD-L1/Anti-4-1BB  Bispecific  Antibody  and  Its  Applications,”  secures
patent  rights  extending  through  2039.  Furthermore,  this  patent  has  already  been  granted  in  Chile,  South  Africa  and  Japan.  Patent
examinations are currently underway in over 20 countries, including the U.S., China and countries in Europe.

Therapeutic Indications

New therapeutic options are urgently needed for cancers that are refractory to or relapse after PD-(L)1 treatment. The approach of
ragistomig  is  to  maximize  T  cell  activity  by  simultaneously  blocking  the  inhibitory  pathways  via  PD-L1  binding  and  turning  on  co-
stimulatory  4-1BB  pathway.  In  addition  to  I-Mab,  other  companies  are  developing  PD-L1  x  4-1BB  bi-specific  antibodies,  including
Genmab and Inhibrx.

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Advantages of Ragistomig

We  believe  that  based  on  publicly  available  information  and  preclinical  studies,  ragistomig  has  the  potential  to  be  a  highly
differentiated PD-L1 and 4-1BB bispecific antibody. In terms of format, some of the leading compounds are monovalent heterodimers
which may affect the potency of each arm and increase the complexity of chemistry, manufacturing and controls. In addition, as detailed
earlier, the anti-4-1BB moiety of ragistomig binds to a novel epitope that only triggers 4-1BB signaling upon tumor binding leading to a
reduced cytokine release and hepatic and systemic immunotoxicity without compromising anti-tumor activity. Ragistomig is also more
specific than certain competitor molecules in terms of 4-1BB binding relative to other TNFR families of co-stimulatory molecules. If
proven in clinical trials, these potential advantages could differentiate ragistomig from other competing compounds.

Summary of Preclinical Results

PD-L1  level-dependent  4-1BB  Agonism  and  T  cell  Activity.  The  ability  of  ragistomig  to  ligate  4-1BB  and  activate  downstream
signaling was tested in a co-culture of PD-L1+ target cells with T cells as effectors. The results in the figure show that the level of NF-kB
reporter activity elicited by ragistomig correlated with the level of PD-L1 expression on the target cells. In contrast, urelumab induced
NF-kB reporter activity regardless of target cell PD-L1 expression. Importantly, ragistomig promoted the proliferation of CD8+ tumor-
infiltrating lymphocytes obtained from human tumor samples in a similar extent to urelumab, while the parental anti-PD-L1 and anti-4-
1BB antibodies, either alone or in combination, had no effect, confirming a strict PD-L1-dependence on T cell stimulation by ragistomig.

Figure: Dose-dependent PD-L1-restricted T cell activity by ragistomig/ABL503 but not urelumab in a co-culture system of T cells and

target cells expressing different levels of PD-L1 (as represented by mean fluorescent intensity (MFJ) values).

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Superior in vivo Anti-tumor Efficacy of ragistomig. In mice grafted with tumor cells expressing human PD-L1, ragistomig treatment
every three days for four cycles suppressed tumor cell growth in a dose-dependent manner, delivering far better efficacy than equimolar
doses of single agents alone or in combination. Remarkably, when the treated tumor-free mice were re-challenged with a second tumor
graft after drug cessation, they remained resistant, indicating that ragistomig produced a durable anti-tumor response.

Figure: Potent in vivo anti-tumor activity of ragistomig in a mouse tumor model. Mice transgenic for humanized 4-1BB were grafted
with  MC38  cells  expressing  human  PD-L1.  Mice  were  treated  with  the  indicated  antibodies  every  three  days  for  four  times.
Tumor-free animals were re-challenged with a second dose of the tumor on day 40 with treatment-naïve animals as a control.
Ragistomig is also known as ABL503.

Preclinical Safety. In contrast to certain competitor PD-L1 x 4-1BB bispecific antibodies, ragistomig did not induce cytokine release
(including IL-6 and TNF-α) up to 0.83 mg/ml, which corresponded to a human equivalent dose of 15 mg/kg. Animal pharmacokinetic
and toxicity studies have also been completed. Results of these studies indicate that the NOAEL was 15 mg/kg/dose. This dose was also
considered the highest non-severely toxic dose. A starting dose of 0.7 mg is proposed for the first-in-human study. There is a >3000-fold
safety margin between the proposed first-in-human dose and the nonclinical safety assessment studies including in vitro cytokine release
assays and good laboratory practice toxicology studies.

Summary of Clinical Results

Phase 1 dose-escalation study is underway in patients with progressive, locally advanced or metastatic solid tumors who are relapsed
or refractory following prior lines of treatment. The dose expansion portion of the Phase 1 study is actively underway in the U.S. and
South Korea. While preliminary efficacy signals have emerged, the maximally tolerated dose has not yet been reached.

Clinical Development Plan

Our partner ABL Bio will present the top-line Phase 1 clinical data at a major medical conference in the first half of 2024. More data

will be generated and reported as the trial progresses.

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Lemzoparlimab (TJC4): A Novel CD47 Antibody for Immuno-Oncology

Summary

Lemzoparlimab  is  a  fully  human  CD47  monoclonal  antibody  discovered  and  developed  internally  by  our  company  for  cancer
immunotherapy. Development of CD47 antibodies has been challenging due to their on-target binding to CD47 expressed on red blood
cells (RBCs). Therefore, various CD47 antibodies in their clinical development may potentially cause severe hemolytic anemia and other
hematologic  side  effects.  As  a  result,  many  CD47  antibody  programs  have  either  been  terminated  or  faced  drug  safety  challenges  in
clinical trials.

Lemzoparlimab is a novel CD47 antibody by design. It was originally selected from antibody screen campaigns designed to identify

CD47 antibody leads with minimal binding to RBCs while maintaining strong binding to tumor cells.

In  September  2020,  we  granted  AbbVie  Ireland  Unlimited  Company,  or  AbbVie,  an  ex-Greater  China  license  to  develop  and
commercialize lemzoparlimab (as well as certain other compounds directed against CD47). On August 15, 2022, we and AbbVie Global
Enterprises  Ltd.  (as  an  assignee  of  AbbVie)  entered  into  an  amendment  to  the  original  licensing  and  collaboration  agreement.  This
amended  agreement  is  referred  to  as  the  “AbbVie  Collaboration  Agreement.”  AbbVie  discontinued  certain  clinical  studies  of
lemzoparlimab, and such discontinuations were not related to any specific or unexpected safety concerns. On September 21, 2023, we
received  a  notice  from  AbbVie,  terminating  the  AbbVie  Collaboration  Agreement  in  its  entirety.  Such  termination  is  based  on  the
previous program discontinuation and AbbVie’s strategic decision.

In  terms  of  lemzoparlimab’s  differentiation  in  drug  safety,  the  preclinical,  Phase  1,  and  Phase  2  clinical  studies  we  previously
conducted in China have supported a good safety profile without the need for a priming dosing regimen. In terms of treatment efficacy,
the  Phase  1  and  Phase  2  clinical  trials  have  demonstrated  encouraging  efficacy  signals,  mostly  in  hematologic  malignancies.  We
previously  initiated  a  Phase  3  clinical  trial  for  first-line  myelodysplastic  syndromes  combination  therapy  in  China  in  April  2023,
however, following the termination of the AbbVie Collaboration Agreement and the completion of the divestiture of the Greater China
assets  and  business  operations,  we  ceased  to  sponsor  this  Phase  3  clinical  trial  of  lemzoparlimab.  We  will  continue  to  evaluate
opportunities  to  further  develop  lemzoparlimab  and  related  drugs,  as  well  as  potential  business  partnership  with  other  global
pharmaceutical  and  bio-tech  companies  in  the  future.  Those  decisions  may  be  informed  by  additional  insights  gained  from
lemzoparlimab clinical data, non-clinical data, or updated knowledge of the asset class.

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The Underlying Mechanism for Lemzoparlimab’s Differentiation

We  set  forth  to  investigate  the  molecular  mechanism  underlying  the  minimal  binding  of  lemzoparlimab  to  RBCs.  The  crystal
structure of the CD47 antibody binding complex revealed that lemzoparlimab binds to a unique epitope of CD47 situated in a heavily
glycosylated site on RBCs. More specifically, the results of crystal structure analysis identified an N-glycosylation site located near the
epitope residues. Additional experiments were carried out to address the hypothesis of whether this glycosylation site near the epitope
may hinder lemzoparlimab from fully binding to its epitope on RBCs. The data showed that PNGase treatment of RBCs to remove the N-
linked oligosaccharides from glycoproteins significantly increased the binding of lemzoparlimab as compared with a control antibody,
providing the evidence that removal of glycosylation site(s) on RBC effectively restores binding of lemzoparlimab to RBCs.

Figure: The left. Crystal structure of the complex of the Fab of lemzoparlimab (TJC4, Cyan) binding with the extracellular domain of
human CD47 (Green). The right. In a representative experiment, human RBCs were treated with PNGase for 1 hr, followed by
the  addition  of  lemzoparlimab  (TJC4)  ore  comparator  CD47  antibody  that  binds  strongly  to  RBC  at  the  indicated
concentrations.  The  binding  of  CD47  antibodies  to  the  treated  (de-glycosylated)  or  untreated  RBCs  was  analyzed  by  flow
cytometry.

In  summary,  the  underlying  mechanism  is  attributable  to  a  unique  binding  site  of  lemzoparlimab  or  so-called  glyco-epitope  on
RBCs. That is, the unique glycosylation integrated with the binding site of lemzoparlimab serves as a natural molecular barrier to prevent
lemzoparlimab from engaging RBCs. Therefore, RBCs are only minimally accessible by lemzoparlimab. In contrast, the binding site on
tumor  cells  does  not  have  the  same  glycosylation  pattern  and  is  fully  exposed  to  and  accessible  by  lemzoparlimab.  Therefore,
lemzoparlimab  can  uniquely  distinguish  tumor  cells  from  RBCs  to  avoid  severe  anemia  that  is  commonly  observed  with  other  CD47
antibodies while retaining strong anti-tumor activity. Following the divestiture of the Greater China assets and business operations, the
aforementioned  Phase  3  clinical  trial  for  first-line  myelodysplastic  syndromes  combination  therapy  in  China  is  now  sponsored  by  our
divested PRC subsidiaries.

Licensing and Collaboration Arrangements

A. In-Licensing Arrangements

Licensing Agreement with MorphoSys (Felzartamab)

In November 2017, we entered into a license and collaboration agreement with MorphoSys AG, or MorphoSys, with respect to the
development and commercialization of felzartamab (MOR202/TJ202), MorphoSys’s proprietary investigational antibody against CD38,
or the CD38 product.

Under this agreement, MorphoSys granted to us an exclusive, royalty-bearing, sublicensable license to exploit MOR202/TJ202 for

any human therapeutic or diagnostic purpose in the licensed territory, namely Greater China.

Pursuant  to  this  agreement,  we  granted  to  MorphoSys  an  exclusive  license  to  our  rights  in  any  inventions  that  we  make  while

exploiting MOR202/TJ202 under this agreement, solely to exploit MOR202/TJ202 outside of Greater China.

We  also  received  the  right  to  sublicense  to  affiliates  and  third  parties  acting  as  contract  manufacturers,  CROs,  distributors  or
wholesalers  without  prior  written  consent,  as  well  as  the  right  to  sublicense  to  other  third  parties  with  the  prior  written  consent  of
MorphoSys, not to be unreasonably withheld, delayed or conditioned.

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We  are  solely  responsible  for  the  development  and  commercialization  of  MOR202/TJ202  in  Greater  China,  and  must  use  commercially

reasonable efforts as we develop and commercialize MOR202/TJ202.

Pursuant to this agreement, we paid to MorphoSys an upfront license fee of US$20.0 million. We also agreed to make milestone payments
to MorphoSys, conditioned upon the achievement of certain development, regulatory and commercial milestones, in the aggregate amount of
US$98.5 million. Such milestones include first patient dosed in human clinical trials, marketing approval, and first annual net sales of CD38
products covered by the agreement in excess of a certain amount. As of the date of this annual report, we have made milestone payments of
US$8.0 million to MorphoSys.

Following the divestiture of the Greater China assets and business operations and as of the date of this annual report, we are no longer a
contracting party of the license and collaboration agreement with MorphoSys with respect to felzartamab and will no longer assume any rights,
title, interest and obligations thereof.

Assignment and License Agreement with Genexine

In  October  2015,  I-Mab  Bio-tech  Tianjin  Co.,  Ltd.,  formerly  known  as  Tasgen  Bio-tech  (Tianjin)  Co.,  Ltd.,  or  I-Mab  Tianjin,  which
subsequently  became  our  subsidiary  following  our  acquisition  of  a  controlling  interest  in  it  in  2017,  entered  into  an  intellectual  property
assignment and license agreement with Genexine, Inc., or Genexine, further amended in December 2017, with respect to four licensed products,
namely GX-H9 (TJ101), GX-G3 (TJ102), GX-G8 and GX-P2 and one assigned product, GX-G6 (TJ103). Under this agreement, Genexine (i)
granted to I-Mab Tianjin an exclusive, non-transferable, sublicensable license to use and otherwise exploit certain intellectual property to engage
in pre-clinical and clinical development, manufacturing, sale and distribution of the above-mentioned licensed products for (A) the treatment of
any disease with respect to GX-H9 and GX-G3 in China (which, for clarity excludes, Hong Kong, Macau and Taiwan), (B) the treatment of
chemically  induced  diarrhea,  with  respect  to  GX-G8  anywhere  in  the  world  and  (C)  the  treatment  of  rheumatoid  arthritis  and  lupus  (not
including psoriasis) with respect to GX-P2 anywhere in the world and further (ii) assigned to I-Mab Tianjin a certain Chinese patent and related
know-how related to the assigned product (TJ103) and granted I-Mab Tianjin an exclusive license to exploit the assigned intellectual property to
engage in pre-clinical and clinical development, manufacturing, sale and distribution of the assigned product (TJ103) for the treatment of any
disease  in  China  (which,  for  clarity,  excludes  Hong  Kong,  Macau  and  Taiwan).  I-Mab  Tianjin  also  receives  an  exclusive  license  to  any
improvements that Genexine develops or acquires related to any of the aforementioned products.

Under this agreement, I-Mab Tianjin paid an aggregate upfront license fee of US$13.0 million in relation to the patents, patent applications,
know-how,  data  and  information  in  connection  with  the  four  licensed  products  and  a  purchase  fee  of  US$7.0  million  in  connection  with  the
assigned  product  (TJ103).  I-Mab  Tianjin  also  agreed  to  make  certain  milestone  payments,  including  milestone  payments  in  the  aggregate
amount  of  US$40.0  million  for  GX-H9,  US$25.0  million  for  TJ103  and  US$15.0  million  for  GX-G3,  conditioned  upon  the  achievement  of
certain net sales targets.

In November 2018, we entered into an intellectual property license agreement with Genexine with respect to GX-G3 (TJ102). Under
this  agreement,  Genexine  granted  to  us  an  exclusive,  non-transferable,  sublicensable  license  to  use  and  otherwise  exploit  certain
intellectual property to engage in pre-clinical and clinical development, manufacturing, sale and distribution of GX-G3 for the treatment
of  any  disease  in  Taiwan  and  Hong  Kong.  We  also  received  an  exclusive  license  to  use  any  improvements  related  to  GX-G3  that
Genexine develops or acquires free of charge in Taiwan and Hong Kong. Under this agreement, the scope of improvements is limited to
GX-G3 and does not include the hyFc platform. We paid an upfront license fee of US$0.1 million and milestone payments of US$0.9
million to Genexine. No other milestone payments are due under this agreement. Following the divestiture of the Greater China assets
and  business  operations  and  as  of  the  date  of  this  annual  report,  we  are  no  longer  a  contracting  party  of  the  intellectual  property
assignment and license agreement with Genexine with respect to GX-H9 (TJ101), GX-G3 (TJ102), GX-G8, GX-P2 and GX-G6 (TJ103)
and will no longer assume any rights, title, interest and obligations thereof.

Licensing Agreement with Genexine (Efineptakin alfa)

In December 2017, we entered into an intellectual property license agreement with Genexine with respect to GX-I7, a long-acting
IL-7 cytokine. Under this agreement, Genexine granted to us an exclusive, sublicensable and transferable license to use and otherwise
exploit certain intellectual property (including improvements subsequently developed or acquired by Genexine) in connection with the
pre-clinical and clinical development, manufacturing, sale and distribution of GX-I7 to treat cancers in the field of oncology in mainland
China, Hong Kong, Macau and Taiwan.

Under this agreement, we paid an upfront license fee of US$12.0 million to Genexine. We also agreed to make milestone payments
in the aggregate amount of US$23.0 million, conditioned upon the achievement of certain development milestones, including completion
of Phase 2 and Phase 3 clinical studies and approval of a new drug application or biologics license application in any of mainland China,
Hong Kong, Macau or Taiwan.

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Further, we agreed to make milestone payments in the aggregate amount of US$525.0 million, conditioned upon the achievement of
certain  cumulative  net  sales  of  GX-I7  up  to  US$2,000  million.  We  also  are  required  to  pay  Genexine  a  low-single-digit  percentage
royalty in respect of the total annual net sales of GX-I7. The aforesaid milestones and royalties (other than the upfront payment) will be
reduced  by  50%  following  the  entry  of  a  generic  version  of  GX-I7  in  mainland  China,  Hong  Kong,  Macau  and  Taiwan  without  the
consent or authorization of us or any of our sublicensees. As of the date of this annual report, no milestone payments or royalties are due
under this agreement.

Unless terminated earlier in accordance with the terms thereof, this agreement will remain in effect until the later of (i) the expiry of
the  last  to  expire  patent  of  the  licensed  intellectual  property  that  includes  a  valid  claim  for  mainland  China,  Hong  Kong,  Macau  or
Taiwan and that covers the composition of GX-I7; and (ii) 15 years from the date of the first commercial sale of GX-I7. This agreement
may be terminated by either party for the other party’s uncured material breach, bankruptcy or insolvency, in the event of force majeure
or regulatory requirement to make material alteration or modification to the contractual rights or obligations of this agreement which has
the effect of preventing the parties from achieving their business objectives, or by mutual agreement of both parties. Genexine has the
right  to  terminate  the  agreement  under  specific  circumstances,  including  if  we  fail  to  use  commercially  reasonable  efforts  to  obtain
regulatory approvals or other registrations necessary for commercializing the licensed product in the agreed period due to our fault and if
we cease to pursue clinical development or product registration or to conduct licensed activities on a reasonable scale as agreed. This
agreement  expressly  states  that  these  termination  circumstances  include  our  failure  to  achieve  certain  development  milestones  or
commercially launch the licensed product in the agreed period. To the extent that we terminate as a result of a regulatory requirement to
make material alteration or modification to the contractual rights or obligations of this agreement or Genexine terminates for our material
breach,  bankruptcy  or  insolvency,  force  majeure,  or  the  specific  termination  circumstances  as  mentioned  above,  we  cannot  develop,
manufacture, market, promote, sell, offer for sale, distribute or otherwise make available any competing product for a certain period after
such termination.

During the term of this agreement, if we develop or acquire any improvement, modification or alteration to the licensed product, we
will own such improvements, modifications or alterations and provide Genexine details thereof, whether patentable or not. Additionally,
we should grant to Genexine a fully paid up, royalty-free, exclusive license (with a right to sublicense) to use any such improvements,
modifications or alterations anywhere outside of mainland China, Hong Kong, Macau and Taiwan.

In  May  2020,  we  and  Genexine  entered  into  an  amendment  to  this  agreement,  whereby  both  parties  desire  to  establish  a
collaboration  on  TJ107  GBM  Study  in  Greater  China.  Under  the  expanded  collaboration,  we  are  mainly  responsible  for  using
commercially reasonable efforts to conduct the Phase 2 GBM clinical trial in Greater China, and Genexine will share the development
strategies, data and costs for success of this clinical trial. As of December 31, 2023, the costs incurred for the development of this new
indication was RMB1.7 million (US$0.25 million) and thus RMB1.2 million (US$0.17 million) was recorded in our audited consolidated
financial statements for the year ended December 31, 2023.

Following the divestiture of the Greater China assets and business operations and as of the date of this annual report, we have not

completed the assignment of the intellectual property license agreement with Genexine with respect to efineptakin alfa.

Licensing Agreement with Ferring (Olamkicept)

In  November  2016,  we  entered  into  a  license  and  sublicense  agreement  with  Ferring  International  Center  SA,  or  Ferring,  with
respect  to  (i)  FE301,  an  interleukin-6  inhibitor,  and  (ii)  all  pharmaceutical  formulations  in  finished  packaged  form  containing  FE301
covered  by  certain  patents  or  patent  applications.  Under  this  agreement,  Ferring  granted  to  us  an  exclusive,  sublicensable  license
(excluding any non-exclusive license that Ferring granted to Conaris Research Institute AG under a licensing agreement entered into in
November  2008)  under  certain  Ferring  intellectual  property  to  research,  develop,  make,  have  made,  import,  use,  sell  and  offer  to  sell
FE301 (and the licensed products containing FE301) in mainland China, Hong Kong, Macau, Taiwan and South Korea. We also have an
option to receive an exclusive, sublicensable license under certain Ferring intellectual property to research, develop, make, have made,
import, use, sell and offer to sell FE301 (and the licensed products containing FE301) in countries in North America, the European Union
and Japan that are mutually agreed upon by the parties.

We are required to use commercially reasonable efforts to obtain approval of FE301 and to promote, market, distribute and sell it in

mainland China, Hong Kong, Macau, Taiwan, and South Korea. Such activities are to be at our own cost and expense.

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Under this agreement, we paid to Ferring an upfront license fee of US$2.0 million. We also agreed to make milestone payments to
Ferring, in the aggregate amount of US$14.5 million, conditioned on the achievement of certain development milestones in the licensed
territory, including completion of Phase 1b and Phase 2a clinical studies and the submission and approval of the new drug application.
Further,  if  we  exercise  our  option  to  receive  a  license  in  any  of  the  mutually  agreed  upon  countries  in  North  America,  the  European
Union  and  Japan,  we  are  required  to  pay  to  Ferring  an  additional  US$3.0  million  as  an  upfront  license  fee  (upon  the  exercise  of  the
option),  and  milestone  fees  up  to  the  aggregate  amount  of  US$30.0  million,  conditioned  upon  the  licensed  product  achieving  certain
development milestones in certain countries in the option territory.

In addition, we agreed to pay Ferring tiered royalties ranging from the mid-single-digit to high-single-digit percentages of annual net
sales for countries in mainland China, Hong Kong, Macau, Taiwan, and South Korea, and from the high-single-digits to 10% of annual
net  sales  for  the  mutually  agreed  upon  countries  in  North  America,  the  European  Union  and  Japan.  To  date,  we  have  not  paid  any
royalties to Ferring.

The royalty term commences with the first commercial sale of the licensed product in the relevant country and ends upon the later of
(i) 15 years from the date of launch, and (ii) the expiry of the last to expire patent of Ferring that includes a valid claim covering the
development,  making,  using  or  selling  of  the  licensed  compound  or  licensed  product  in  the  licensed  territory  and/or  option  territory.
Unless terminated earlier in accordance with the terms thereof, this agreement will remain in effect until the later of the expiry of the
royalty term, and the first date on which we are not conducting any necessary and outstanding clinical study with respect to the licensed
product or seeking to obtain any necessary and pending regulatory approval for the licensed product, if applicable. This agreement may
be terminated by either party for the other party’s uncured material breach, bankruptcy or insolvency. In addition, in the event that the
original  licensor  terminates  its  license  to  Ferring  governing  any  of  the  intellectual  property  sublicensed  to  us  under  this  agreement,
Ferring has the right to terminate this agreement with respect to such sublicenses in which case both parties will discuss in good faith
how  to  resolve  and  mitigate  to  mutual  satisfaction.  To  the  extent  that  Ferring  terminates  for  our  material  breach,  bankruptcy  or
insolvency, among other things, all licenses and rights granted by Ferring to us will automatically terminate and the licenses and rights
we granted to Ferring will survive and automatically become irrevocable with the right to sublicense.

During the term of the licensing agreement, if we develop or acquire any improvement, modification, enhancement or addition to the
licensed product, we will own and retain all rights, title and interest therein, and grant to Ferring a non-exclusive, fully paid, royalty-free,
worldwide license thereto.

In September 2020, we entered into a sublicense agreement with I-Mab Hangzhou, under which we sublicensed to I-Mab Hangzhou
an  exclusive,  sublicensable  license  to  develop,  manufacture  and  commercialize  olamkicept  in  mainland  China,  Hong  Kong,  Macau,
Taiwan and South Korea. In December 2021, we entered into a supplementary sublicensing agreement with I-Mab Hangzhou, pursuant
to which I-Mab Hangzhou, as a sub-licensee of olamkicept (TJ301) in Greater China and Korea, agreed to pay US$3.0 million to us for
the  completion  of  olamkicept  (TJ301)  Phase  2a  study  report.  After  receiving  the  milestone  payment  of  RMB19.1  million  (US$3.0
million) from I-Mab Hangzhou, we made the payment of US$3.0 million to Ferring, as of December 31, 2023.

In  May  2022,  we  entered  into  an  amended  and  restated  license  and  sublicense  agreement  and  a  cell  line  and  manufacturing
collaboration agreement with Ferring, under which we granted to Ferring an exclusive, perpetual and transferrable sublicense, with the
right  to  grant  further  sublicenses  to  sublicensees,  under  all  of  the  intellectual  properties  licensed  to  us  by  our  business  partner,  to
research, develop, make, import, use and sell olamkicept as expressed by or produced by cell lines created by our business partner and its
affiliates  in  any  human  indications  in  the  territories  other  than  Greater  China  and  Korea.  We  also  granted  to  Ferring  an  exclusive,
perpetual and royalty-free license, with right of sublicense to sublicensees, under the intellectual property owned or controlled by our
company  which  relates  to  cell  lines  created  by  our  business  partner  and  its  affiliates,  for  the  research,  development,  making,  using  or
selling of olamkicept, including prespecified patents and know-how and improvements thereto. As of December 31, 2023, Ferring paid
to us the milestone payment as specified in the agreement. Ferring also agreed to make milestone payments to us, conditioned on the
achievement of certain development milestones in Ferring’s licensed territory.

License and Collaboration Agreement with MacroGenics (enoblituzumab)

In July 2019, we entered into a license and collaboration agreement with MacroGenics, Inc. for development and commercialization
of an Fc-optimized antibody known as enoblituzumab that targets B7-H3, including in combination with other agents, such as the anti-
PD-1 antibody known as retifanlimab (formerly MGA012), in mainland China, Hong Kong, Macau and Taiwan.

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Under this agreement, MacroGenics granted to us an exclusive, sublicensable, royalty-bearing license to MacroGenics’ patents and
know-how to develop and commercialize the enoblituzumab product, and a combination regimen of enoblituzumab and retifanlimab, in
Greater China during the term of the agreement.

In exchange for these rights, in addition to certain financial consideration, we grant to MacroGenics a royalty-free, sublicensable,
license outside of Greater China, to our patents and know-how that are related to the enoblituzumab product or useful or necessary for
MacroGenics to develop or commercialize the enoblituzumab product or a product containing retifanlimab, and combinations thereof.
The license is (i) non-exclusive with respect to the enoblituzumab product, and (ii) exclusive with regard to retifanlimab.

Unless prohibited by applicable laws and regulations, which include all international, national, federal, state, regional, provincial,
municipal and local government laws, rules, and regulations that apply to either us or MacroGenics or to the conduct of the collaboration
under this agreement (including Good Manufacturing Practice, Good Clinical Practices, General Biological Products Standards, and the
laws, rules and regulations of the International Conference on Harmonisation, the United States, mainland China, Hong Kong, Macau,
and Taiwan, each as may be then in effect, as applicable and amended from time to time), we co-own all clinical data generated pursuant
to  this  agreement  in  any  clinical  trial  conducted  solely  in  Greater  China,  and,  to  the  extent  that  such  joint  ownership  is  not  legally
permitted, MacroGenics is the sole and exclusive owner of such clinical data. MacroGenics solely and exclusively owns all other clinical
data generated pursuant to this agreement. We are not aware of any applicable laws or regulations that would prohibit us from jointly
owning such clinical data and, to our knowledge, we currently qualify for such joint ownership with MacroGenics under this agreement.

Pursuant  to  this  agreement,  we  paid  MacroGenics  an  upfront  payment  of  US$15.0  million.  We  also  agreed  to  pay  MacroGenics
development and regulatory milestone fees of up to US$135.0 million and tiered double-digit royalties (ranging from mid-teens to twenty
percent) based on annual net sales in the territories. As of the date of this annual report, we have made a milestone payment of US$4.5
million to MacroGenics. In July 2022, due to an unexpected high incidence of fatal bleeding, MacroGenics terminated a phase 2 study of
enoblituzumab as a combination therapy with PD-1 antibody or PD-1/LAG3 bispecific antibody in patients with head and neck cancers.
We exercised our right to terminate the license and collaboration agreement with MacroGenics by serving a termination notice on August
29, 2022 and the termination came into effect in February 2023.

Other In-Licensing Arrangements

In November 2018, we entered into a license and collaboration agreement with MorphoSys for MorphoSys’s proprietary antibody
(MOR210/TJ210)  directed  against  C5aR.  Under  this  agreement,  MorphoSys  granted  to  us  an  exclusive,  royalty-bearing  license  to
explore, develop and commercialize MOR210/TJ210 in Greater China and South Korea and allowed us to share certain economics upon
certain clinical milestones in the U.S. As of the date of this annual report, we have received the economics sharing of US$0.9 million
from MorphoSys. I-Mab agreed to perform and fund all global development activities related to the development of MOR210/TJ210 in
Greater China and South Korea, including all clinical trials (including in the U.S. and China) and all development activities required for
IND filing in the U.S. as well as the development of chemistry, manufacturing and controls. As of the date of this annual report, we have
made an upfront payment of US$3.5 million and milestone payment of US$2.5 million to MorphoSys. No other milestone payments or
royalties are due under this agreement in the reporting period. MorphoSys retains rights in respect of development and commercialization
of MOR210/TJ210 in the rest of the world. Additionally, MorphoSys maintains the right to conduct activities in Greater China and South
Korea that enable MorphoSys to exploit MOR210/TJ210 outside of those countries. Pursuant to the license and collaboration agreement
we entered into with MorphoSys in relation to MOR210/TJ210, we are required to use commercially reasonable efforts as we develop
and commercialize MOR210/TJ210 in Greater China and South Korea. This agreement may be terminated by either party for the other
party’s uncured material breach, bankruptcy or insolvency. In addition, we have the right to terminate the agreement for convenience at
any time after a certain specified time period upon a notice period that varies based upon the stage of development and for safety reasons.
MorphoSys  has  the  right  to  terminate  the  agreement  if  we  challenge  its  patents.  To  the  extent  that  we  terminate  for  convenience  or
MorphoSys terminates for our material breach, bankruptcy, insolvency or patent challenge, among other things, all licenses and rights
granted by MorphoSys to us will automatically terminate and the licenses and rights granted by us to MorphoSys will survive. In the
event  of  such  termination,  in  addition  to  other  obligations,  we  must  grant  to  MorphoSys  an  exclusive,  royalty-bearing,  sublicensable
license under certain of our intellectual property relating to the licensed product to exploit MOR210/TJ210 in Greater China and South
Korea. Following the divestiture of the Greater China assets and business operations and as of the date of this annual report, we are no
longer a contracting party of the license and collaboration agreement with MorphoSys with respect to MOR210/TJ210 and will no longer
assume any rights, title, interest and obligations thereof.

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B. Out-Licensing Arrangements

Licensing Agreement with ABL Bio

In July 2018, we entered into a license and collaboration agreement with ABL Bio, or the ABL Bio License, as amended from time
to time. Under the ABL Bio License, we granted to ABL Bio exclusive, worldwide (excluding Greater China), royalty-bearing rights to
develop  and  commercialize  a  bispecific  antibody,  or  the  BsAb,  using  certain  of  our  monoclonal  antibody  sequences.  ABL  Bio  has
developed expertise in the area of bispecific antibodies for all indications and has developed proprietary intellectual property around the
BsAb  technology,  and  the  license  allows  ABL  Bio  to  further  develop  and  commercialize  the  BsAb  based  on  monoclonal  antibodies
licensed from us under the ABL Bio License. ABL Bio granted to us an exclusive, royalty-free, sublicensable license under its interest in
the BsAb and related know-how (including improvements thereto) to exploit the licensed BsAb in Greater China.

Under  the  ABL  Bio  License,  we  and  ABL  Bio  each  are  responsible  for  using  commercially  reasonable  efforts  to  develop  the
licensed  products  through  the  completion  of  in  vivo  studies,  and  ABL  Bio  is  responsible  for  using  commercially  reasonable  efforts
thereafter. We agreed to split costs fifty-fifty (50:50) with ABL Bio through the completion of in vivo studies, with ABL Bio responsible
for all costs and activities following that time. ABL Bio is responsible for all development and commercialization activities in its own
territories, subject to our input through a joint committee comprised of an equal number of our and ABL Bio’s representatives (though
ABL Bio has final decision-making authority).

In consideration of the license, ABL Bio paid us an upfront fee of US$2.5 million and agrees to make milestone payments in the
aggregate amount of US$97.5 million conditioned upon achieving certain clinical development and sales milestones. Further, ABL Bio
agreed to pay us royalties of mid-single-digit percentages on the total annual net sales of the licensed BsAb product.

In addition, ABL Bio granted to us an exclusive, royalty-free, sublicensable license to use its BsAb technology solely to exploit the

licensed BsAb product for all indications in Greater China.

We also agreed that, during the term of the ABL Bio License, neither we nor ABL Bio would develop independently from the other

a bispecific antibody that uses the same pair of antibodies as the bispecific antibody molecules created under the ABL Bio License.

The  ABL  Bio  License  will  continue  to  be  in  effect  until  expiration  of  the  last  payment  obligation  thereunder,  unless  earlier
terminated according to its terms. The ABL Bio License may be terminated by either party for the other party’s uncured material breach
or in the event that the other party challenges its patents. In addition, after a certain specified time period, ABL Bio may terminate the
ABL Bio License upon a notice period that varies based upon the stage of development.

Upon  expiration  (but  not  termination)  of  the  ABL  Bio  License,  we  and  ABL  Bio  will  each  retain  our  respective  licenses  granted
under the ABL Bio License. If the ABL Bio License is terminated pursuant to ABL Bio’s right to terminate at will or due to ABL Bio’s
material breach, all rights and obligations (including all licenses granted) shall terminate and upon our request, we and ABL Bio will
negotiate  in  good  faith  regarding  our  takeover  of  the  exploitation  of  the  BsAb  product  outside  of  Greater  China  in  exchange  for
reasonable  compensation.  Such  negotiation  will  include,  among  other  things,  ABL  Bio’s  assignment  of  assets  related  to  the  licensed
BsAb product and the continuation of the licenses granted to us under the ABL Bio License.

In  September  2020,  we  assigned  and  transferred  all  our  rights  and  obligations  under  the  ABL  Bio  License  to  I-Mag  Hangzhou.
Following the divestiture of the Greater China assets and business operations and as of the date of this annual report, we will no longer
assume any rights, title, interest and obligations thereof.

Licensing Agreement with CSPC Entity

In  December  2018,  we  entered  into  a  product  development  agreement  with  an  entity  controlled  by  CSPC  Pharmaceutical  Group
Limited (HKEX: 1093), or CSPC Entity. Under this agreement, we granted to CSPC Entity exclusive, non-transferable, non-irrevocable
and sublicensable rights under our patent rights in China to develop and commercialize TJ103 for treating type 2 diabetes mellitus and
any  other  potential  therapeutic  applications.  CSPC  Entity’s  right  to  sublicense  is  conditioned  on  our  prior  written  consent,  which  we
cannot  unreasonably  withhold,  other  than  sublicense  to  CSPC  Entity’s  affiliates.  CSPC  Entity  is  a  comprehensive  pharmaceutical  and
drug manufacturing company, with an increasing focus on its research and development of new products focusing the therapeutic area of
oncology, among others.

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Under this agreement, CSPC Entity is responsible for using commercially reasonable efforts to develop, obtain market approval and
commercialize the licensed products, while we are responsible for using commercially reasonable efforts to transfer the manufacturing
technology of the licensed products to CSPC Entity and assist or guide CSPC Entity in the continued optimization of such manufacturing
technology thereafter. CSPC Entity has final decision-making authority with respect to product development (though the research plan
should  be  jointly  developed  by  both  parties  and  any  changes  to  the  plan  should  be  discussed  and  approved  by  the  joint  development
committee) and commercialization.

We also agreed that, during the term of this agreement, we should not develop, either for ourselves or for third parties, any other

hyFc platform technology-based long-acting recombinant GLP-1 Fc fusion proteins that may be in a competitive position with TJ103.

In  consideration  of  the  license,  CSPC  Entity  paid  us  an  upfront  fee  of  RMB15.0  million  and  milestone  payment  of  RMB15.0
million. Further, CSPC agreed to make milestone payments in an aggregate amount of RMB118.5 million conditioned upon achieving
certain  clinical  development  and  regulatory  approval  milestones,  including  completion  of  Phase  2  and  Phase  3  clinical  studies  and
obtaining  approval  of  a  new  drug  application  or  market  approval.  Further,  we  are  also  entitled  to  tiered  royalties  ranging  from  mid-
single-digit percentages to 10 percent in respect of the total annual net sales of the products after their commercialization in China. The
royalty term will terminate at the later of: (i) the expiry date of the underlying patents of the licensed products with application numbers
201410851771.1 and 201580071643.8 (final grant of rights requested relating to GLP-1) in China, whichever is later; and (ii) the ten-
year anniversary of the initial commercialization of the product developed under this agreement. We expect any patents that may issue
under the aforementioned patent application numbers 201410851771.1 and 201580071643.8 will expire between 2034 and 2035, before
taking into account any extension that may be obtained through patent term extensions or adjustments, or term reduction due to filing of
terminal disclaimers.

Unless  terminated  earlier  in  accordance  with  the  terms  thereof,  this  agreement  will  remain  in  effect  until  the  termination  of  the
royalty term. This agreement may be terminated by either party for the other party’s uncured material breach, bankruptcy or insolvency
or  force  majeure.  We  have  the  right  to  terminate  the  agreement  if  CSPC  Entity  fails  to  use  commercially  reasonable  efforts  to  obtain
regulatory approvals for commercializing the licensed product in the period stipulated by its board of directors due to its own fault or if
CSPC Entity ceases to pursue clinical development or product registration as determined by its board of directors. CSPC Entity has the
right  to  terminate  the  agreement  if  we  fail  to  resolve  certain  intellectual  property  disputes  relating  to  TJ103  within  six  months  after
signing.

During the term of this agreement, CSPC Entity has exclusive, royalty-free rights in China to any work product generated by us, and
be responsible for any patent application and maintenance costs of such work product. CSPC Entity has all rights to any work product
generated by itself under this agreement.

Following  the  divestiture  of  the  Greater  China  assets  and  business  operations  and  as  of  the  date  of  this  annual  report,  we  are  no
longer a contracting party of the product development agreement with CSPC Entity with respect to TJ103 and will no longer assume any
rights, title, interest and obligations thereof.

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Other Out-Licensing Arrangements

In April 2017, our subsidiary I-Mab Shanghai entered into a technology transfer agreement with Ningbo Hou De Yi Min Information
Technology  Co.,  Ltd.,  or  HDYM,  and  Hangzhou  HealSun  Biopharm  Co.,  Ltd.,  or  HealSun,  with  respect  to  PD-L1  humanized
monoclonal  antibodies.  HealSun  is  a  portfolio  company  of  Lepu  Biotech.  Under  this  agreement,  I-Mab  Shanghai  agreed  to  grant  to
HDYM exclusive (even to I-Mab Shanghai itself), worldwide and sublicensable rights to develop, manufacture, have manufactured, use,
sell, have sold, import, or otherwise exploit certain PD-L1 related patents, patent applications, know-hows, data and information of I-
Mab Shanghai, relevant cell lines as well as any PD-L1 monoclonal antibody arising from such cell lines for the treatment of diseases.
Further,  I-Mab  Shanghai  and  its  cooperative  party  HealSun  agreed  to  provide  subsequent  research  and  development  services  on  such
intellectual  property  to  HDYM,  including  the  selection  and  examination  of  innovative  PD-L1  humanized  monoclonal  antibodies,
cultivation  and  selection  of  stable  cell  lines,  establishment  of  cell  bank,  research  and  development  of  manufacturing  processes  and
preparation  of  samples,  toxicological  and  pharmacological  testing,  pre-clinical  pharmaceutical  experiment  report  drafting,  and
application  for  and  registration  of  clinical  trials.  If  any  party  breaches  the  agreement  and  fails  to  cure,  the  non-breaching  parties  may
terminate  this  agreement.  In  addition,  in  the  event  that  the  development  of  the  licensed  product  encounters  insurmountable  technical
difficulties,  this  agreement  may  be  terminated  by  mutual  agreement  of  all  parties.  To  the  extent  that  the  agreement  is  terminated  for
HDYM’s breach, all licenses and rights granted by us to HDYM will automatically terminate and be re-assigned to us. To the extent that
the agreement is terminated due to material difficulty, HDYM will have all rights to dispose of any development data and technology
held  by  HealSun  and  us  under  this  agreement  and  neither  HealSun  or  us  may  use  such  development  data  and  technology  without
HDYM’s consent. Following the divestiture of the Greater China assets and business operations and as of the date of this annual report,
we are no longer a contracting party of the technology transfer agreement with HDYM and Healsun with respect to PD-L1 humanized
monoclonal antibodies and will no longer assume any rights, title, interest and obligations thereof.

In March 2020, we entered into a strategic partnership with Kalbe Genexine Biologics, or KG, a joint venture of Kalbe Farma Tbk,
or  Kalbe,  and  Genexine.  Under  the  terms  of  the  agreement,  KG  has  a  right  of  first  negotiation  for  an  exclusive  license  for  the
commercialization  of  two  I-Mab-discovered  product  candidates:  uliledlimab,  a  differentiated  anti-CD73  antibody  in  Phase  1
development for advanced solid tumors, and an I-Mab product candidate to be agreed upon by both parties. With the agreement, KG has
a  right  of  first  negotiation  for  exclusive  rights  to  commercialize  these  two  product  candidates  in  the  ASEAN  (Brunei  Darussalam,
Cambodia, Indonesia, Laos, Malaysia, Myanmar, Philippines, Singapore, Thailand and Vietnam) and MENA (Algeria, Bahrain, Djibouti,
Egypt,  Israel,  Jordan,  Kuwait,  Lebanon,  Malta,  Morocco,  Oman,  Qatar,  Saudi  Arabia,  Tunisia,  United  Arab  Emirates,  and  Palestine)
regions, as well as Sri Lanka. If and when we and KG enter into the definitive licensing agreement for uliledlimab, we will be eligible to
receive from KG an aggregate amount of up to approximately US$340 million, including an upfront payment and subsequent payments
conditional  upon  achieving  certain  development  and  commercial  milestones.  KG  will  pay  us  tiered  royalties  in  the  low  to  mid-teen
percentages on net sales from the ASEAN and MENA regions, as well as Sri Lanka. In June 2023, we terminated the first negotiation
agreement with KG, pursuant to which, KG no longer has a right of first negotiation for the exclusive right to commercialize uliledlimab
in Southeast Asia and other regions.

C. Collaboration Arrangements

In July 2018, we entered into a collaboration agreement with ABL Bio, further amended in November 2018, May 2019, December
2019, June 2020, September 2021, respectively, whereby both parties agreed to collaborate to develop two bispecific antibodies by using
ABL  Bio’s  proprietary  BsAb  technology  and  commercialize  them  in  their  respective  territories,  which,  collectively,  include  Greater
China and South Korea, and other territories throughout the rest of the world if both parties agree to do so in such other territories during
the performance of the agreement. This agreement may be terminated by either party for the other party’s uncured material breach or in
the  event  that  the  other  party  challenges  its  patents.  Also,  if  a  party  encounters  insurmountable  technical  difficulties  and  risks,  which
cannot  be  resolved  by  such  party  within  a  certain  period  thereafter  despite  all  reasonable  efforts,  such  party  will  have  the  right  to
terminate this agreement and will no longer have the right to develop the licensed product. Following the divestiture of the Greater China
assets  and  business  operations  and  as  of  the  date  of  this  annual  report,  we  have  not  completed  the  assignment  of  the  collaboration
agreement with ABL Bio with respect to the two bispecific antibodies.

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In  September  2018,  we  entered  into  a  collaboration  and  platform  technology  license  agreement  with  WuXi  Biologics  Ireland
Limited,  or  WuXi  Biologics,  whereby  both  parties  agreed  to  collaborate  in  the  research  and  development  of  at  least  three  bispecific
antibodies  for  our  company  to  commercialize  them  worldwide.  Such  bispecific  antibodies  will  be  created  using  our  proprietary
monoclonal  antibodies  and  WuXi  Biologics’  proprietary  WuXiBody  platform  technology  for  generating  bispecific  antibodies,  will  be
developed and manufactured through the exclusive service of WuXi Biologics. This agreement may be terminated by either party for the
other  party’s  uncured  material  breach,  bankruptcy  or  insolvency.  WuXi  Biologics  has  the  right  to  terminate  this  agreement  if  we
challenge its patents. We have the right to terminate this agreement if we decide to end the development and commercialization of the
licensed product in the licensed territory due to scientific, technical, or commercial reasons. As of the date of this annual report, we have
made an up-front payment of US$1.0 million to Wuxi Biologics and no milestone payments or royalties are due under this agreement. In
April  2019,  we  extended  our  existing  partnership  with  WuXi  Biologics  (Shanghai)  Co.,  Ltd..  We  entered  into  a  long-term,  strategic
collaboration  agreement  with  WuXi  Biologics  (Shanghai)  Co.,  Ltd.  to  facilitate  the  development  of  chemistry,  manufacturing  and
controls  and  good  manufacturing  practice-compliant  manufacturing  of  both  clinical  and  commercial  supplies  of  certain  of  our
monoclonal  and  bispecific  antibodies  and  fusion  products,  leveraging  WuXi  Biologics’  and  its  affiliates’  expertise  in  this  area  and
supporting our pre-existing collaboration and platform technology license agreement with WuXi Biologics.

In November 2018, we entered into collaboration agreements with Tracon Pharmaceuticals, Inc., or Tracon, whereby we and Tracon
agreed to (i) co-develop our proprietary CD73 antibody, TJD5, and (ii) collaborate to co-develop up to five bispecific antibodies. Both
agreements  may  be  terminated  by  either  party  for  the  other  party’s  uncured  material  breach,  bankruptcy  or  insolvency  or  for  other
reasons. In April 2020, Tracon issued a notice of disputes with respect to these agreements. In February 2021, we sent Tracon a notice to
terminate the agreement we entered into with Tracon to co-develop TJD5, which would result in a prespecified termination fee of US$9.0
million  owing  to  Tracon.  The  disputes  were  presented  to  a  binding  arbitration  proceeding  under  the  Rules  of  Arbitration  of  the
International  Chamber  of  Commerce  before  an  arbitration  tribunal.  On  April  25,  2023,  the  arbitration  award  determined  that  the
agreement in relation to TJD5 has been terminated for a pre-agreed termination fee of $9.0 million plus interest payable pursuant to the
original  agreement,  and,  therefore  Tracon  has  no  rights  to  share  any  future  economics  with  I-Mab.  The  arbitration  award  completely
denied Tracon’s damages claim of over US$200 million for any breach and awarded no damages to Tracon. The tribunal also confirmed
the termination of the agreement in relation to bispecific antibodies. Based on the arbitration award, I-Mab bears a portion of Tracon’s
legal fees and costs, totaling approximately US$13.5 million. In July 2023, we paid the pre-agreed termination fee in relation to TJD5
and the agreed-upon portion of Tracon’s legal fees and costs to Tracon.

In  March  2021,  we  entered  into  two  collaboration  agreements  with  Complix,  an  EU-based  biotech  company,  and  Affinity,  a
Shanghai-based  biotech  company,  respectively,  allowing  us  to  access  cutting-edge  technology  platforms  to  create  next  generation  of
novel  and  highly  differentiated  drug  candidates,  including  Cell  Penetrating  Alphabodies  for  otherwise  intractable  intracellular  drug
targets  and  masked  antibodies  for  targeted  tumor-site  activation.  Under  the  agreement  we  entered  into  with  Complix,  both  parties
collaborate  to  discover,  develop  and  commercialize  novel  therapeutics  for  mutually  agreed  targets  based  on  Complix’s  proprietary
technology. Under the agreement we entered into with Affinity, both parties collaborate to develop lead compounds for mutually agreed
targets  based  on  Affinity’s  Tumor  MicroEnvironment  Activated  body  platform  technology.  Following  the  divestiture  of  the  Greater
China assets and business operations and as of the date of this annual report, we are no longer a contracting party of the collaboration
agreement with Affinity and will no longer assume any rights, title, interest and obligations thereof. As of the date of this annual report,
we have not completed the assignment of the collaboration agreement with Complix.

In July 2021, we entered into a collaboration agreement with Immorna, an mRNA biotech company, to discover and develop self-
replicating mRNA for in vivo synthesized therapeutic biologics. In the same month, we entered into a collaboration agreement with neoX
Biotech,  an  AI-enabled  R&D  biotech  company,  to  accelerate  the  R&D  process  of  novel  targets  and  modalities.  In  March  2023,  we
terminated the collaboration agreement with Immorna.

In  October  2021,  to  strengthen  our  commercial  capabilities  and  support  our  commercialization  transformation,  we  entered  into  a
strategic partnership with Sinopharm, pursuant to which, we authorize more than 300 of Sinopharm’s subsidiaries as distributors across
China to support distribution and retail allocation to terminal markets while we lead the overall commercial activities. The partnership
also includes alliance on key projects, to jointly support the commercialization and go-to-market process of our differentiated and novel
products. Following the divestiture of the Greater China assets and business operations and as of the date of this annual report, we are no
longer a contracting party of the strategic partnership agreement with Sinopharm and will no longer assume any rights, title, interest and
obligations thereof.

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In  November  2021,  we  entered  into  a  strategic  collaboration  agreement  with  Jumpcan,  a  leading  China  pharmaceutical  company
specialized  in  and  committed  to  pediatric  medicines,  for  the  development,  manufacturing  and  commercialization  of  our  highly
differentiated long-acting recombinant human growth hormone, eftansomatropin alfa (TJ101) in mainland China. Under the collaboration
agreement,  we  continue  to  lead  the  ongoing  registrational  Phase  3  clinical  trial  of  eftansomatropin  alfa  in  pediatric  growth  hormone
deficiency. The two companies share costs of manufacturing tech transfer, process optimization and new formulation development. We
are  the  marketing  authorization  holder  of  the  product  and  supply  the  product  at  agreed  cost  to  Jumpcan.  Jumpcan  is  responsible  for
commercializing  the  product  and  developing  new  indications  in  collaboration  with  us  in  mainland  China.  We  provide  clinical,
manufacturing  and  academic  support.  According  to  the  collaboration  agreement,  Jumpcan  agreed  to  make  an  upfront  payment  of
RMB224 million to I-Mab and, upon achievement of development, registration and sales milestones, certain milestone payments of up to
RMB1.792 billion, making the non-royalty payments a total of up to RMB2.016 billion. In addition, we and Jumpcan will share profits
generated from commercialization of the product in mainland China on a 50/50 basis, pursuant to which we are entitled to receive tiered
low double-digit royalties on net sales. Following the divestiture of the Greater China assets and business operations and as of the date of
this  annual  report,  we  have  not  completed  the  assignment  of  the  strategic  collaboration  agreement  with  Jumpcan  with  respect  to
eftansomatropin alfa (TJ101).

In  November  2021,  we  also  entered  into  a  strategic  collaboration  with  Roche  Diagnostics,  a  global  leader  in  in  vitro  diagnostics
industry, to co-develop companion diagnostics solutions for our innovative pipeline, at the Fourth China International Import Expo in
Shanghai. Under this collaboration, we and Roche Diagnostics jointly develop companion diagnostics solutions for the innovative assets
under  development  by  us  to  accelerate  the  research  and  development  process  of  innovative  biologics  with  cutting-edge  diagnosis  and
treatment technologies. Following the divestiture of the Greater China assets and business operations and as of the date of this annual
report, we are no longer a contracting party of the strategic collaboration with Roche Diagnostics and will no longer assume any rights,
title, interest and obligations thereof.

Competition

Our industry is highly competitive and subject to rapid and significant change. While we believe that our management’s research,
development  and  commercialization  experience  provide  us  with  competitive  advantages,  we  face  competition  from  global
biopharmaceutical  companies,  including  specialty  pharmaceutical  companies,  generic  drug  companies,  biologics  drug  companies,
academic institutions, government agencies and research institutions.

For  our  Global  portfolio  drug  candidates,  we  expect  to  face  competition  from  a  broad  range  of  global  and  local  pharmaceutical
companies. Many of our competitors have significantly greater financial, technical and human resources than we have, and mergers and
acquisitions  in  the  biopharmaceutical  industry  may  result  in  even  more  resources  being  concentrated  among  a  smaller  number  of  our
competitors. Our commercial opportunity could be reduced or eliminated if our competitors develop or market products or other novel
therapies that are more effective, safer or less costly than our current or future drug candidates, or obtain regulatory approval for their
products more rapidly than we may obtain approval for our drug candidates.

Intellectual Property

Our  success  will  depend  significantly  on  our  ability  to  obtain  and  maintain  patent  and  other  proprietary  protection  for  our  drug
candidates and other commercially important products, technologies, inventions and know-how, as well as on our ability to defend and
enforce our patents including any patent that we have or may issue from our patent applications, preserve the confidentiality of our trade
secrets and operate without infringing the valid and enforceable patents and proprietary rights of other parties.

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As of the date of this annual report, our owned patent portfolio consists of (i) 58 issued patents, including three issued in the U.S.,
three  issued  in  Korea  and  52  issued  in  other  jurisdictions;  and  (ii)  82  pending  patent  applications,  including  eight  Patent  Cooperation
Treaty,  or  PCT  patent  applications,  seven  U.S.  patent  applications,  one  PRC  patent  application  and  66  patent  applications  in  other
jurisdictions. Our owned patents and patent applications primarily relate to the drug candidates in our Global portfolio.

Lemzoparlimab

Uliledlimab

As  of  the  date  of  this  annual  report,  we  owned  seven  PCT  patent  applications,  four  of  which  have  entered
national phases including in the United States and additional jurisdictions. We expect that any patents that may
issue  under  these  applications  will  expire  between  2037  and  2044,  before  taking  into  account  any  extension
that may be obtained through patent term extension or adjustment, or term reduction due to filing of terminal
disclaimers.

As  of  the  date  of  this  annual  report,  we  owned  five  PCT  patent  applications,  two  of  which  have  entered
national phases including in the United States, and additional jurisdictions. We expect that any patent that may
issue  under  these  applications  will  expire  between  2038  and  2043,  before  taking  into  account  any  extension
that may be obtained through patent term extension or adjustment, or term reduction due to filing of terminal
disclaimers.

Givastomig (TJ-CD4B) As  of  the  date  of  this  annual  report,  we  co-owned  three  PCT  patent  application  with  ABL  Bio  Inc.,  one  of
which has entered national phases including in the United States, and additional jurisdictions. We expect that
any patent that may issue under this application will expire between 2040 and 2043, before taking into account
any  extension  that  may  be  obtained  through  patent  term  extension  or  adjustment,  or  term  reduction  due  to
filing of terminal disclaimers.

Ragistomig (TJ-L14B) As of the date of this annual report, we co-owned one PCT patent application with ABL Bio Inc., which has
entered national phases including in the PRC, the Europe, the United States and additional jurisdictions. We
expect that any patent that may issue under this application will expire between 2039 and 2044, before taking
into  account  any  extension  that  may  be  obtained  through  patent  term  extension  or  adjustment,  or  term
reduction due to filing of terminal disclaimers.

The term of a patent depends upon the laws of the country in which it is issued. In most jurisdictions, a patent term is 20 years from
the earliest filing date of a non-provisional patent application. Patents relating to inventions are effective for twenty years, utility models
are effective for ten years and designs are effective for fifteen years from the date of application.

In addition to patents, we rely upon unpatented trade secrets and know-how and continuing technological innovation to develop and
maintain our competitive position. However, trade secrets and know-how can be difficult to protect. We seek to protect our proprietary
information, in part, by executing confidentiality agreements with our partners, collaborators, scientific advisors, employees, consultants
and  other  third  parties,  and  invention  assignment  agreements  with  our  consultants  and  employees.  We  have  also  executed  agreements
requiring assignment of inventions with selected scientific advisors and collaborators. The confidentiality agreements we enter into are
designed to protect our proprietary information and the agreements or clauses requiring assignment of inventions to us are designed to
grant us ownership of technologies that are developed through our relationship with the respective counterparty. We cannot guarantee
that  we  have  entered  into  such  agreements  with  each  party  that  may  have  or  have  had  access  to  our  trade  secrets  or  proprietary
technology  and  processes  or  that  these  agreements  will  afford  us  adequate  protection  of  our  intellectual  property  and  proprietary
information  rights.  If  any  of  the  partners,  collaborators,  scientific  advisors,  employees  and  consultants  who  are  parties  to  these
agreements breaches or violates the terms of any of these agreements or otherwise discloses our proprietary information, we may not
have adequate remedies for any such breach or violation, and we could lose our trade secrets as a result.

Additionally, as of the date of this annual report, we had (i) two registered trademarks in Hong Kong, 59 registered trademarks in the
PRC, six registered trademarks in the United States, and one trademark application in the PRC; and (ii) seven domain names in Hong
Kong and one domain name in the Cayman Islands.

For  more  information  on  these  and  other  risks  related  to  intellectual  property,  see  “Item  3.  Key  Information—D.  Risk  Factors—

Risks Related to Our Intellectual Property.”

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Environmental, Health and Safety Matters

In  August  2021,  we  established  an  environmental,  social  and  governance  (ESG)  committee.  The  committee  consists  of  two
independent directors, Mr. Chun Kwok Alan Au and Dr. Rong Shao. Mr. Chun Kwok Alan Au chairs the committee. As the oversight
body for our ESG practices, the committee is responsible for supervising our ESG strategies, policies, long-term sustainability objectives
and risks. In addition, we also set up an ESG working group to address daily ESG workflows. In May 2022, we published our 2021 ESG
report  to  summarize  highlights  and  progress  of  our  ESG  practices.  In  February  2023,  we  were  granted  “A”  rating  by  MSCI
Environmental, Social and Governance, following its annual review, and such rating outperforms approximately 66% peers among global
biotech companies.

With  the  current  state  of  business  operations,  we  have  no  significant  environmental  impact  due  to  no  large-scale  manufacturing
operations.  We  abide  by  local  laws  and  regulations  on  environmental  protection  and  only  discharge  a  small  amount  of  waste  gas  and
wastewater after proper treatment. A small amount of hazardous wastewater produced during the research and development process is
carefully collected and handed over to qualified third-party professionals for proper treatment before discharged to the sewage treatment
plant.  A  small  amount  of  harmless  waste  gas  is  emitted  at  a  high  altitude  after  filtration  by  activated  carbon.  Any  hazardous  waste
generated during the research and development process is carefully collected by laboratory technicians daily and placed in a temporary
storage  facility,  and  transported  to  qualified  professionals  once  a  month,  in  accordance  with  strict  local  environmental  guidelines.  We
also  provided  employee  trainings,  set  up  standard  operation  procedures  and  contingency  plans  for  of  potential  accidents  of
environmental, health and safety.

At present, energy and resources consumed in our daily operations are mainly municipal electricity and domestic water. We assigned
a dedicated team to regularly inspect and maintain the equipment, measure total consumption, and train employees on water and energy
saving measures.

Safety  and  health  are  the  foundation  of  our  operational  activities.  We  have  created  a  comprehensive  internal  safety  management
system  to  ensure  compliance,  strengthen  risk  assessment  and  management.  In  addition,  we  provide  employees  with  annual  physical
check-ups  to  ensure  the  health  of  the  employees.  We  offered  standard  operation  procedures  to  ensure  employees  are  aware  of  any
potential hazards, including providing emergency training, treatment facilities, and personal protection equipment to all employees.

Regulation

We  are  subject  to  a  variety  of  U.S.  and  PRC  laws,  rules  and  regulations  affecting  many  aspects  of  our  business.  This  section

summarizes the principal laws and regulations in the U.S. and China that we believe are relevant to our business and operations.

PRC Regulation

We are subject to a variety of PRC laws, rules and regulations affecting many aspects of our business. This section summarizes the

principal PRC laws, rules and regulations that we believe are relevant to our business and operations.

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Regulations on Company Establishment and Foreign Investment

Company Law

The establishment, operation and management of companies in China is governed by the PRC Company Law, the latest amended
edition of which will come into effect on July 1, 2024. In light of the PRC Company Law, companies established in the PRC are either in
the form of a limited liability company or a joint stock company. The PRC Company Law applies to both PRC domestic companies and
foreign-invested companies, unless otherwise provided in the foreign investment laws and regulations.

Foreign Investment Law

On March 15, 2019, the National People’s Congress approved the PRC Foreign Investment Law, which became effective on January
1, 2020. The Foreign Investment Law establishes the basic framework for the access to, and the promotion, protection and administration
of  foreign  investments  in  view  of  investment  protection  and  fair  competition.  According  to  the  Foreign  Investment  Law,  “foreign
investment”  refer  to  investment  activities  directly  or  indirectly  conducted  by  one  or  more  natural  persons,  business  entities,  or  other
organizations of a foreign country (collectively referred to as “foreign investor”) within China, and “investment activities” include the
following activities: (i) a foreign investor, individually or together with other investors, establishes a foreign-invested enterprise within
China; (ii) a foreign investor acquires stock shares, equity shares, shares in assets, or other similar rights and interests of an enterprise
within China; (iii) a foreign investor, individually or together with other investors, invests in a new construction project within China;
and (iv) investments in other means as provided by the laws, administrative regulations or the State Council.

Regulations Relating to Foreign Investment

On  December  26,  2019,  the  State  Council  promulgated  the  Implementation  Rules  to  the  Foreign  Investment  Law,  which  became
effective  on  January  1,  2020.  The  implementation  rules  further  clarified  that  the  state  encourages  and  promotes  foreign  investment,
protects the lawful rights and interests of foreign investors, regulates foreign investment administration, continues to optimize foreign
investment environment, and advances a higher-level opening.

Furthermore, PRC-based investments by foreign investors are currently regulated by the Special Management Measures (Negative
List) for the Access of Foreign Investment (2021) issued on December 1, 2021 and effective from January 1, 2022, and the Catalogue of
Industries  for  Encouraging  Foreign  Investment  (2022  Version)  issued  on  October  26,  2022  and  effective  from  January  27,  2023.
According  to  the  aforesaid  catalogue  and  management  measures,  foreign-invested  industries  fall  into  four  categories,  namely,
“encouraged”  “permitted”  “restricted”  and  “prohibited”  and  certain  ownership  requirements,  requirements  for  senior  executives  and
other  special  management  measures  should  apply  to  foreign  investors  with  regard  to  the  access  of  foreign  investments  in  certain
categories.

On  December  30,  2019,  the  Ministry  of  Commerce  and  the  State  Administration  for  Market  Regulation  jointly  promulgated
Measures for Information Reporting on Foreign Investment, which became effective on January 1, 2020. Pursuant to the Measures for
Information Reporting on Foreign Investment, where a foreign investor carries out investment activities in China directly or indirectly,
the foreign investor or the foreign-invested enterprise should submit the investment information to the competent commerce department.

M&A Rules

According  to  the  Provisions  on  the  Merger  or  Acquisition  of  Domestic  Enterprises  by  Foreign  Investors  jointly  issued  by  the
Ministry of Commerce, the State Assets Supervision and Administration Commission of the State Council, the State Administration of
Taxation,  the  State  Administration  for  Industry  and  Commerce  (now  known  as  the  State  Administration  for  Market  Regulation),  the
China  Securities  Regulatory  Commission  and  the  State  Administration  of  Foreign  Exchange,  or  the  SAFE,  on  August  8,  2006  and
amended by the Ministry of Commerce on June 22, 2009, among other things, (i) the purchase of an equity interest or subscription to the
increase  in  the  registered  capital  of  non-foreign-invested  enterprises,  (ii)  the  establishment  of  foreign-invested  enterprises  to  purchase
and operate the assets of non-foreign-invested enterprises, or (iii) the purchase of the assets of non-foreign-invested enterprises and the
use  of  such  assets  to  establish  foreign-invested  enterprises  to  operate  such  assets,  in  each  case,  by  foreign  investors  is  subject  to  the
Provisions  on  the  Merger  or  Acquisition  of  Domestic  Enterprises  by  Foreign  Investors.  Particularly,  application  should  be  made  for
examination and approval of the acquisition of any company in China affiliating to a domestic company, enterprise or natural person,
which is made in the name of an oversea company established or controlled by such domestic company, enterprise or natural person.

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PRC Drug Regulation

The Drug Administration Law of the PRC promulgated by the Standing Committee of the National People’s Congress on September
20, 1984 and effective from July 1, 1985 and amended on February 28, 2001, December 28, 2013, April 24, 2015 and August 26, 2019,
respectively, and the Implementing Measures of the Drug Administration Law promulgated by the State Council on August 4, 2002 and
effective from September 15, 2002 and amended on February 6, 2016 and March 2, 2019, respectively, have jointly established the legal
framework for the administration of pharmaceutical products in China, including the research, development and manufacturing of new
drugs.  The  Drug  Administration  Law  applies  to  entities  and  individuals  engaged  in  the  development,  production,  trade,  application,
supervision  and  administration  of  pharmaceutical  products,  which  regulates  and  provides  for  a  framework  for  the  administration  of
pharmaceutical  manufacturers,  pharmaceutical  trading  companies  and  medicinal  preparations  of  medical  institutions,  and  the
development,  research,  manufacturing,  distribution,  packaging,  pricing  and  advertisements  of  pharmaceutical  products.  The
Implementing Measures of the Drug Administration Law, on the other hand, provides detailed implementation regulations for the Drug
Administration Law.

The  amendment  to  the  Drug  Administration  Law  in  2019  brought  a  series  of  changes  to  the  drug  supervision  and  administration
system, including, but not limited to, the clarification of the drug marketing authorization holder system, pursuant to which the marketing
authorization holder should assume responsibilities for non-clinical studies, clinical trials, manufacturing and marketing, post-marketing
studies, monitoring, reporting and handling of adverse reactions of the drug. The amendment also stipulates that the State supports the
innovation of drugs with clinical value and specific or special effects on human diseases, encourages the development of drugs with new
therapeutic  mechanisms  and  have  multi-targeted,  systematic  regulatory  and  intervention  functions  on  human  body  and  promotes  the
technological advancement of drugs.

Regulatory Authorities

Pharmaceutical  products  and  medical  devices  and  equipment  in  China  are  monitored  and  supervised  on  a  national  scale  by  the
National  Medical  Products  Administration,  or  the  NMPA,  while  the  local  provincial  medical  products  administrative  authorities  are
responsible for the supervision and administration of drugs within their respective administrative regions.

The  NMPA  is  the  chief  drug  regulatory  agency  and  the  NMPA  regulates  almost  all  of  the  key  stages  of  the  life  cycle  of
pharmaceutical products, including non-clinical studies, clinical trials, marketing approvals, manufacturing, advertising and promotion,
distribution, and pharmacovigilance (i.e., post-marketing safety reporting obligations). The Center for Drug Evaluation, which remains
under the NMPA, conducts the technical evaluation of each drug and biologic application for safety and effectiveness.

The  National  Health  Commission  is  China’s  chief  healthcare  regulator.  It  is  primarily  responsible  for  overseeing  the  operation  of
medical institutions, which also serve as clinical trial sites, and regulating the licensure of hospitals and medical personnel. The National
Health  Commission  plays  a  significant  role  in  drug  reimbursement.  Furthermore,  the  National  Health  Commission  and  its  local
counterparts at or below provincial-level local governments also oversee and organize public medical institutions’ centralized bidding
and  procurement  process  for  pharmaceutical  products,  which  is  the  chief  means  through  which  public  hospitals  and  their  internal
pharmacies acquire drugs.

Manufacturing and Distribution

According to the Drug Administration Law, all facilities that manufacture drugs in China must receive a drug manufacturing license
from  the  local  drug  regulatory  authority.  Each  drug  manufacturing  license  issued  to  a  pharmaceutical  manufacturing  enterprise  is
effective for a period of five years. Any enterprise holding a drug manufacturing license is subject to review by the regulatory authorities
on an annual basis.

Similarly, for sales, importation, shipping and storage businesses, a company must obtain a Drug Distribution License from the local

drug regulatory authority, subject to renewal every five years.

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China  has  implemented  a  “Two-Invoice  System”  to  control  the  distribution  of  prescription  drugs.  The  “Two-Invoice  System”
generally requires that no more than two invoices be issued throughout the distribution chain: one from the manufacturer to a distributor
and another from the distributor to the end-user hospital. This excludes the sale of products invoiced from the manufacturer to its wholly-
owned  or  controlled  distributors,  or  for  imported  drugs,  to  its  exclusive  distributor,  or  from  a  distributor  to  its  wholly-owned  or
controlled subsidiary (or between its wholly-owned or controlled subsidiaries). However, the system still significantly limits the options
for  companies  to  use  multiple  distributors  to  reach  a  larger  geographic  area  in  China.  Compliance  with  the  Two-Invoice  System  is  a
prerequisite for pharmaceutical companies to participate in the procurement processes of public hospitals, which currently provide most
of  China’s  healthcare  services.  Manufacturers  and  distributors  that  fail  to  implement  the  Two-Invoice  System  may  lose  their
qualifications to participate in the bidding process. Non-compliant manufacturers may also be blacklisted from engaging in drug sales to
public hospitals in a locality.

The Two-Invoice System was first implemented in 11 provinces involved in pilot comprehensive medical reforms, and the program

has been expanded to nearly all provinces, each with its own individual rules for the program.

New Drug Application

Pursuant  to  the  Administrative  Measures  for  Drug  Registration,  upon  completion  of  research  and  other  preparation  work,  the
applicant  may  apply  to  the  NMPA  for  approval  of  a  new  drug  application.  The  NMPA  will  then  determine  whether  to  approve  the
application according to the comprehensive evaluation opinion issued by the Center for Drug Evaluation of the NMPA.

At the stage of new drug application, depending on the characteristics of the drug and the corresponding conditions, applicants may
apply for adoption of special procedures, including the Priority Review Procedure and the Special Review Procedure. Such procedures
may be applied for innovative drugs for severe infectious diseases or rare diseases, breakthrough drugs and other eligible drugs stipulated
in the Administrative Measures for Drug Registration. Extra policy support, including less review period, may be given to applicants in
such special procedures.

Marketing Authorization Holder System

Pursuant to the Drug Administration Law, under the drug marketing authorization holder mechanism, an enterprise or a research and
development institution, which has obtained a drug registration certificate is eligible to be a drug marketing authorization holder and the
drug marketing authorization holder should be responsible for nonclinical laboratory studies, clinical trials, production and distribution,
post-market studies, and the monitoring, reporting, and handling of adverse reactions in connection with pharmaceuticals in accordance
with the provisions of the Drug Administration Law. The drug marketing authorization holder may engage contract manufacturers for
manufacturing, provided that the contract manufacturers are licensed and may engage pharmaceutical distribution enterprises with drug
distribution  license  for  sales,  importation,  shipping  and  storage  businesses.  Upon  the  approval  of  the  medical  products  administrative
department under the State Council, a drug marketing authorization holder may transfer the drug marketing license and the transferee
should  have  the  capability  of  quality  management,  risk  prevention  and  control,  and  liability  compensation  to  ensure  the  safety,
effectiveness and quality controllability of drugs, and fulfill the obligations of the drug marketing license holder.

Intellectual Property Rights

China became a member of the World Trade Organization and a party to the Agreement on Trade-Related Aspects of Intellectual
Property  Rights  on  December  11,  2001.  China  has  also  entered  into  several  international  conventions  on  intellectual  property  rights,
including,  but  not  limited  to,  the  Paris  Convention  for  the  Protection  of  Industrial  Property,  the  Madrid  Agreement  Concerning  the
International Registration of Marks, and the Patent Cooperation Treaty.

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Patents

Pursuant to the PRC Patent Law promulgated by the Standing Committee of the National People’s Congress on March 12, 1984 and
amended on September 4, 1992, August 25, 2000, December 27, 2008 and October 17, 2020, respectively, and the latest revision thereto
became effective from June 1, 2021, and the Implementation Rules of the Patent Law of the PRC promulgated by the State Council on
June  15,  2001  and  amended  on  December  28,  2002  and  January  9,  2010  and  December  11,  2023,  respectively  and  the  latest  revision
thereto  became  effective  from  January  20,  2024,  patents  in  China  fall  into  three  categories:  invention,  utility  model  and  design.  An
invention patent is granted to a new technical solution proposed in respect of a product or method or an improvement of a product or
method. A utility model is granted to a new technical solution that is practicable for application and proposed in respect of the shape,
structure or a combination of both of a product. A design patent is granted to the new design of a certain product in shape, pattern or a
combination of both and in color, shape and pattern combinations aesthetically suitable for industrial application. Under the PRC Patent
Law, the term of patent protection starts from the date of application. Patents relating to invention are effective for twenty years, patents
relating  to  utility  models  are  effective  for  ten  years,  and  patents  relating  to  designs  are  effective  for  fifteen  years,  from  the  date  of
application. The PRC Patent Law adopts the principle of “first-to-file” system, which provides that if there is more than one person files
a patent application for the same invention, a patent will be granted to the person who files the application first.

In China, a patent must have novelty, creativity and practical applicability. Under the PRC Patent Law, novelty means that before a
patent application is filed, no identical invention or utility model has been publicly disclosed in any publication in China or overseas or
has been publicly used or made known to the public by any other means, whether in or outside of China, nor has any other person filed
with  the  patent  authority  an  application  that  describes  an  identical  invention  or  utility  model  and  is  recorded  in  patent  application
documents or patent documents published after the filing date. Creativity means that, compared with existing technology, an invention
has  prominent  substantial  features  and  represents  notable  progress,  and  a  utility  model  has  substantial  features  and  represents  any
progress.  Practical  applicability  means  an  invention  or  utility  model  can  be  manufactured  or  used  and  may  produce  positive  results.
Patents in China are filed with the CNIPA. Normally, the CNIPA publishes an application for an invention patent within 18 months after
the filing date, which may be shortened at the request of applicant. The applicant must apply to the CNIPA for a substantive examination
within three years from the date of application.

Article 19 of the PRC Patent Law provides that, for an invention or utility model completed in China, any applicant (not just Chinese
companies  and  individuals),  before  filing  a  patent  application  outside  of  China,  must  first  submit  it  to  the  CNIPA  for  a  confidential
examination. Any failure to comply with this requirement would result in the denial of any Chinese patent for the invention or utility
model.

Meanwhile, the Patent Law implements a “compensation for patent term” measure. In the event that an invention patent is granted
after the fourth anniversary of the date of application and the third anniversary of the date of the request for substantive examination, the
Patent Administration Department of the State Council should, at the request of the patentee, provide the compensation for patent term
for the unreasonable delay in the process of granting the patent, except for the unreasonable delay caused by the applicant. In particular,
in order to compensate the time taken for the review and approval of new drugs, if the new drug-related invention patents are approved
for marketing in China, the Patent Administration Department of the State Council should provide the compensation for patent term to
the patentee, for the duration of patent rights at the request of the patentee. The compensation for patent term should not exceed five
years, and the total effective patent right period after the new drug is approved for marketing should not exceed fourteen years.

Patent Enforcement

Unauthorized  use  of  patents  without  consent  from  owners  of  patents,  forgery  of  the  patents  belonging  to  other  persons,  or
engagement  in  other  patent  infringement  acts,  will  subject  the  infringers  to  infringement  liability.  Serious  offenses  such  as  forgery  of
patents may be subject to criminal penalties.

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When a dispute arises out of infringement of the patent owner’s patent right, Chinese law requires that the parties first attempt to
settle the dispute through mutual consultation. However, if the dispute cannot be settled through mutual consultation, the patent owner, or
an interested party who believes the patent is being infringed, may either file a civil legal suit or file an administrative complaint with the
patent  administration  authority.  A  Chinese  court  may  issue  a  preliminary  injunction  upon  the  patent  owner’s  or  an  interested  party’s
request before instituting any legal proceedings or during the proceedings. Damages for infringement are calculated as the loss suffered
by the patent holder arising from the infringement, and if the loss suffered by the patent holder arising from the infringement cannot be
determined,  the  damages  for  infringement  should  be  calculated  as  the  benefit  gained  by  the  infringer  from  the  infringement.  If  it  is
difficult  to  ascertain  damages  in  this  manner,  damages  may  be  determined  by  using  a  reasonable  multiple  of  the  license  fee  under  a
contractual  license.  Statutory  damages  may  be  awarded  in  the  circumstances  where  the  damages  cannot  be  determined  by  the  above-
mentioned calculation standards. The damage calculation methods should be applied in the aforementioned order. Generally, the patent
owner  has  the  burden  of  proving  that  the  patent  is  being  infringed.  However,  if  the  owner  of  an  invention  patent  for  manufacturing
process of a new product alleges infringement of its patent, the alleged infringer has the burden of proof.

Medical Patent Compulsory License

According to the PRC Patent Law, for the purpose of public health, the CNIPA may grant a compulsory license for manufacturing

patented drugs and exporting them to countries or regions covered under international treaties to which the PRC has acceded.

Trade Secrets

Pursuant to the PRC Anti-Unfair Competition Law promulgated by the Standing Committee of the National People’s Congress on
September 2, 1993 and amended on November 4, 2017 and April 23, 2019, respectively, the term “trade secrets” refers to technical and
business information that is unknown to the public, has utility, may create business interests or profits for its legal owners or holders, and
is maintained as a secret by its legal owners or holders. Under the PRC Anti-Unfair Competition Law, business persons are prohibited
from infringing others’ trade secrets by (1) obtaining the trade secrets from the legal owners or holders by any unfair methods, such as
theft, bribery, fraud, coercion, electronic intrusion, or any other illicit means; (2) disclosing, using or permitting others to use the trade
secrets  obtained  illegally  under  item  (1)  above;  (3)  disclosing,  using  or  permitting  others  to  use  the  trade  secrets,  in  violation  of  any
contractual agreements or any requirements of the legal owners or holders to keep such trade secrets in confidence; or (4) instigating,
inducing or assisting others to disclose, use or permit others to use the trade secrets, in violation of any contractual agreements or any
requirement of the legal owners or holders to keep such trade secret in confidence. If a third party knows or should have known of the
above-mentioned illegal conduct but nevertheless obtains, uses or discloses trade secrets of others, the third party may be deemed to have
committed a misappropriation of the others’ trade secrets. The parties whose trade secrets are being misappropriated may petition for
administrative corrections, and regulatory authorities may terminate any illegal activities and impose fines on the infringing parties.

Regulation of Commercial Bribery

Pharmaceutical  companies  involved  in  a  criminal  investigation  or  administrative  proceedings  related  to  bribery  are  listed  in  the
Adverse Records of Commercial Briberies by their respective provincial health and family planning administrative department. Pursuant
to the Provisions on the Establishment of Adverse Records of Commercial Briberies in the Medicine Purchase and Sales Industry which
became  effective  on  March  1,  2014,  provincial  health  and  family  planning  administrative  departments  formulate  the  implementing
measures for establishment of Adverse Records of Commercial Briberies. Where a pharmaceutical company or its agent is listed in the
Adverse Records of Commercial Briberies on one occasion, it will be prohibited from participating in the procurement bidding process
or selling its products to public medical institutions located in the local provincial-level region for two years from the publication of the
adverse  records.  The  evaluation  points  of  such  pharmaceutical  company  or  agent  in  respect  of  the  procurement  bidding  process  and
procurement by public medical institutions must be credited by public medical institutions in the other provincial-level regions for two
years  from  the  publication  of  the  adverse  records.  Where  a  pharmaceutical  company  or  its  agent  is  listed  in  the  Adverse  Records  of
Commercial Briberies on two or more occasions within five years, it will be prohibited from participating in the procurement bidding
process or selling its products to all public medical institutions in the PRC for two years from the publication of these adverse records.

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Regulations Relating to Employee Stock Incentive Plan

In  February  2012,  the  SAFE  promulgated  the  Notices  on  Issues  Concerning  the  Foreign  Exchange  Administration  for  Domestic
Individuals  Participating  in  Stock  Incentive  Plans  of  Overseas  Publicly  Listed  Companies.  In  accordance  with  this  regulation  and
applicable rules and regulations, PRC citizens or non-PRC citizens residing in China for a continuous period of not less than one year,
who participate in any stock incentive plan of an overseas publicly listed company, subject to a few exceptions, are required to register
with  the  SAFE  through  a  domestic  qualified  agent,  which  could  be  a  PRC  subsidiary  of  such  overseas  listed  company,  and  complete
certain procedures. We and our employees who are PRC citizens or who reside in China for a continuous period of not less than one year
and who participate in our stock incentive plan will be subject to such regulation. In addition, the State Administration of Taxation has
issued  circulars  concerning  employee  share  options  or  restricted  shares.  Under  these  circulars,  employees  working  in  the  PRC  who
exercise  share  options,  or  whose  restricted  shares  vest,  will  be  subject  to  PRC  individual  income  tax.  The  PRC  subsidiaries  of  an
overseas listed company have obligations to file documents related to employee share options or restricted shares with the tax authorities
and to withhold individual income tax of those employees related to their share options or restricted shares. If the employees fail to pay,
or the PRC subsidiaries fail to withhold, their individual income tax according to the laws, rules and regulations, the PRC subsidiaries
may face sanctions imposed by the tax authorities or other PRC government authorities.

Regulations Relating to Foreign Exchange and the Dividend Distribution

Foreign Exchange Control

The  State  Council  promulgated  the  PRC  Regulation  for  the  Foreign  Exchange  on  January  29,  1996,  which  was  amended  on
January 14, 1997 and August 5, 2008, respectively. On June 20, 1996, the People’s Bank of China promulgated the Regulation on the
Administration of the Foreign Exchange Settlement, Sales and Payment, which came into effect on July 1, 1996. Pursuant to the above-
mentioned  regulations,  foreign  exchanges  required  for  distribution  of  profits  and  payment  of  dividends  may  be  purchased  from
designated foreign exchange banks in the PRC upon presentation of a board resolution authorizing the distribution of profits or payment
of  dividends.  The  Regulation  on  the  Administration  of  the  Foreign  Exchange  Settlement,  Sales  and  Payment  removed  the  previous
restrictions on convertibility of foreign exchange in respect of current account items, including the distribution of dividends, interest and
royalty  payments,  trade  and  service-related  foreign  exchange  transactions,  while  foreign  exchange  transactions  in  respect  of  capital
account items, such as direct investment, loan, securities investment and repatriation of investment, remain subject to the approval of the
SAFE.

On  November  19,  2012,  the  SAFE  issued  the  Operating  Rules  for  Foreign  Exchange  Issues  with  Regard  to  Direct  Investment
under Capital Account as an appendix to the Circular of the SAFE on Further Improving and Adjusting the Foreign Exchange Policies on
Direct Investment, which was issued on November 19, 2012 and amended on May 4, 2015, October 10, 2018 and December 30, 2019,
respectively.  According  to  the  Circular  of  the  SAFE  on  Further  Improving  and  Adjusting  the  Foreign  Exchange  Policies  on  Direct
Investment,  (i)  the  opening  of  and  payment  into  foreign  exchange  accounts  under  direct  investment  accounts  are  no  longer  subject  to
approval  by  the  SAFE;  (ii)  reinvestment  with  the  legal  income  of  foreign  investors  in  China  is  no  longer  subject  to  approval  by  the
SAFE; (iii) the procedures for capital verification and confirmation that foreign-funded enterprises need to go through are simplified; (iv)
the purchase and external payment of foreign exchange under direct investment accounts are no longer subject to approval by the SAFE;
(v) domestic transfer of foreign exchange under direct investment accounts is no longer subject to approval by the SAFE; and (vi) the
administration  over  the  conversion  of  foreign  exchange  capital  of  foreign-funded  enterprises  is  improved.  On  February  13,  2015,  the
SAFE  issued  the  Circular  on  Further  Simplifying  and  Improving  Foreign  Exchange  Administration  Policies  in  Respect  of  Direct
Investment, which came into effect on June 1, 2015 and was amended on December 30, 2019, providing that the banks, instead of the
SAFE,  can  directly  handle  the  foreign  exchange  registration  and  approval  under  foreign  direct  investment,  while  the  SAFE  and  its
branches indirectly supervise the foreign exchange registration and approval under foreign direct investment through the banks.

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On  March  30,  2015,  the  SAFE  released  the  Circular  on  the  Reform  of  the  Management  Method  for  the  Settlement  of  Foreign
Exchange Capital of Foreign-invested Enterprises, which came into effect on June 1, 2015 and was amended on December 30, 2019 and
March  23,  2023,  respectively,  and  superseded  the  Notice  on  the  Relevant  Operating  Issues  Concerning  the  Improvement  of  the
Administration of Payment and Settlement of Foreign Currency Capital of Foreign-funded Enterprises issued by the SAFE on August 29,
2008.  The  Circular  on  the  Reform  of  the  Management  Method  for  the  Settlement  of  Foreign  Exchange  Capital  of  Foreign-invested
Enterprises  has  made  certain  adjustments  to  some  regulatory  requirements  on  the  settlement  of  foreign  exchange  capital  of  foreign-
invested  enterprises,  and  some  foreign  exchange  restrictions  provided  in  the  Notice  on  the  Relevant  Operating  Issues  Concerning  the
Improvement of the Administration of Payment and Settlement of Foreign Currency Capital of Foreign-funded Enterprises. On June 9,
2016, the SAFE issued the Circular on the Reform and Standardization of the Management Policy of the Settlement of Capital Projects,
which  was  amended  on  December  4,  2023.  Under  the  Circular  on  the  Reform  and  Standardization  of  the  Management  Policy  of  the
Settlement  of  Capital  Projects  and  the  Circular  on  the  Reform  of  the  Management  Method  for  the  Settlement  of  Foreign  Exchange
Capital of Foreign-invested Enterprises, the settlement of foreign exchange by foreign-invested enterprises should be governed by the
policy of foreign exchange settlement on a discretionary basis. However, the aforementioned circulars also reiterate that the settlement of
foreign exchange should only be used for its own operation purposes within the business scope of the foreign-invested enterprises and
following the principles of authenticity.

The SAFE promulgated the Circular on Relevant Issues Concerning Foreign Exchange Control on Domestic Residents’ Offshore
Investment and Financing and Roundtrip Investment through Special Purpose Vehicles on July 4, 2014, which requires PRC residents to
register with local branches of the SAFE in connection with their direct establishment or indirect control of an offshore entity for the
purpose of overseas investment and financing, with such PRC residents’ legally owned assets or equity interests in domestic enterprises
or offshore assets or interests as a “special purpose vehicle” as defined therein. The aforesaid circular further requires amendment to the
registration  in  the  event  of  any  significant  changes  with  respect  to  the  special  purpose  vehicle.  Failure  to  comply  with  the  SAFE
registration requirements under the Circular on Relevant Issues Concerning Foreign Exchange Control on Domestic Residents’ Offshore
Investment  and  Financing  and  Roundtrip  Investment  through  Special  Purpose  Vehicles  could  result  in  liabilities  under  PRC  law  for
evasion of foreign exchange controls. The Circular on Further Simplifying and Improving Foreign Exchange Administration Policies in
Respect of Direct Investment, provides that local banks, instead of the SAFE, can directly handle the initial foreign exchange registration
and  amendment  registration  under  the  Circular  on  Relevant  Issues  Concerning  Foreign  Exchange  Control  on  Domestic  Residents’
Offshore Investment and Financing and Roundtrip Investment through Special Purpose Vehicles.

On  April  10,  2020,  SAFE  promulgated  the  Circular  on  Optimizing  Administration  of  Foreign  Exchange  to  Support  the
Development of Foreign-related Business, which allows eligible enterprises to make domestic payments using their capital funds, foreign
credits and the income under capital accounts of overseas listing, without providing evidentiary materials concerning authenticity of such
capital for banks in advance, provided that their capital use should be authentic and in line with provisions, and conform to the prevailing
administrative  regulations  on  the  use  of  income  under  capital  accounts.  The  administering  bank  should  perform  ex-post  sampling  in
accordance with the requirements.

Dividend Distribution

Pursuant  to  the  PRC  Company  Law,  the  latest  amended  edition  of  which  will  come  into  effect  on  July  1,  2024,  and  the  Foreign
Investment  Law  of  the  PRC,  foreign-invested  enterprises  in  the  PRC  may  pay  dividends  only  out  of  their  accumulated  profits  as
determined  in  accordance  with  PRC  accounting  standards  and  regulations.  When  a  foreign-invested  enterprise  distributes  its  after-tax
profit for the year, ten percent of the profit should be set aside as its statutory surplus reserve fund. The company may no longer do so if
its cumulative statutory surplus reserve accounts for more than fifty percent of its registered capital. If the company’s statutory surplus
reserve  is  insufficient  to  make  up  for  the  losses  of  previous  years,  the  company  shall  use  the  current  year’s  profit  to  make  up  for  the
losses before the set-aside of the statutory surplus reserve. After the company has set aside a part of its after-tax profit as its statutory
surplus reserve, it may also set aside a part of its after-tax profit as its discretionary reserve. Distributions can be made to shareholders
only after the remaining after-tax profit have made up for losses and the surplus reserve has been set aside.

On  January  26,  2017,  the  SAFE  issued  the  Notice  on  Improving  the  Check  of  Authenticity  and  Compliance  to  Further  Promote
Foreign  Exchange  Control,  which  stipulates  several  capital  control  measures  with  respect  to  outbound  remittance  of  profits  from
domestic entities to offshore entities, including the following: (i) under the principle of genuine transaction, banks should check board
resolutions  regarding  profit  distribution,  the  original  version  of  tax  filing  records  and  audited  financial  statements;  and  (ii)  domestic
entities should hold income to account for previous years’ losses before remitting the profits. Moreover, domestic entities should provide
detailed  explanations  of  the  sources  of  capital  and  the  utilization  arrangements  and  board  resolutions,  contracts  and  other  proof  when
completing the registration procedures in connection with an outbound investment.

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Regulations Relating to Enterprise Income Tax

Pursuant to the Enterprise Income Tax Law of the PRC effective as of January 1, 2008 and as amended on February 24, 2017 and
December 29, 2018, respectively, the income tax rate for both domestic and foreign-invested enterprises is 25% with certain exceptions.
To  clarify  certain  provisions  in  the  Enterprise  Income  Tax  Law,  the  State  Council  promulgated  the  Implementation  Rules  of  the
Enterprise Income Tax Law on December 6, 2007, which was amended and became effective on April 23, 2019. Under the Enterprise
Income  Tax  Law  and  the  Implementation  Rules  of  the  Enterprise  Income  Tax  Law,  enterprises  are  classified  as  either  “resident
enterprises” or “non-resident enterprises.” Besides enterprises established within the PRC, enterprises established outside of China whose
“de  facto  management  bodies”  are  located  in  China  are  considered  “resident  enterprises”  and  subject  to  the  uniform  25%  enterprise
income tax rate for their global income. In addition, the Enterprise Income Tax Law provides that a non-resident enterprise refers to an
entity established under foreign law whose “de facto management bodies” are not within the PRC, but has an establishment or place of
business in the PRC, or does not have an establishment or place of business in the PRC but has income sourced within the PRC.

The Implementation Rules of the Enterprise Income Tax Law provide that since January 1, 2008, an income tax rate of 10% should
normally  be  applicable  to  dividends  declared  to  non-PRC  resident  enterprise  investors  that  do  not  have  an  establishment  or  place  of
business in the PRC, or have an establishment or place of business but the income is not effectively connected with the establishment or
place  of  business,  to  the  extent  such  dividends  are  derived  from  sources  within  the  PRC.  The  income  tax  on  the  dividends  may  be
reduced pursuant to a tax treaty between China and the jurisdictions in which the non-PRC shareholders reside.

Other PRC National- and Provincial-Level Laws and Regulations

We  are  subject  to  changing  regulations  under  many  other  laws  and  regulations  administered  by  governmental  authorities  at  the
national, provincial and municipal levels, some of which are or may become applicable to our business. For example, regulations control
the confidentiality of patients’ medical information and the circumstances under which patient medical information may be released for
inclusion in our databases, or released by us to third parties. These laws and regulations governing both the disclosure and the use of
confidential patient medical information may become more restrictive in the future.

We  also  comply  with  numerous  additional  national  and  provincial  laws  relating  to  matters  such  as  safe  working  conditions,
manufacturing  practices,  environmental  protection  and  fire  hazard  control.  We  believe  that  we  are  currently  in  compliance  with  these
laws and regulations; however, we may be required to incur significant costs to comply with these laws and regulations in the future.
Unanticipated  changes  in  existing  regulatory  requirements  or  adoption  of  new  requirements  could  therefore  have  a  material  adverse
effect on our business, results of operations and financial condition.

U.S. Regulation

Government Regulation and Product Approval in the United States

The  FDA  and  other  regulatory  authorities  in  the  United  States  at  federal,  state  and  local  levels,  as  well  as  in  foreign  countries,
extensively  regulate,  among  other  things,  the  research,  development,  testing,  manufacture,  quality  control,  import,  export,  safety,
effectiveness,  labeling,  packaging,  storage,  distribution,  recordkeeping,  approval,  advertising,  promotion,  marketing,  post-approval
monitoring  and  post-approval  reporting  of  biological  products.  Along  with  third-party  contractors,  we  are  required  to  navigate  the
various pre-clinical, clinical and commercial approval requirements of the governing regulatory agencies of the countries in which we
wish  to  conduct  studies  or  seek  approval  or  licensure  of  our  drug  candidates.  The  processes  for  obtaining  regulatory  approvals  in  the
United States and in foreign jurisdictions, along with subsequent compliance with applicable laws and regulations and other regulatory
authorities, require the expenditure of substantial time and financial resources.

Government  policies  may  change  and  additional  government  regulations  may  be  enacted  that  could  prevent  or  delay  further
development  or  regulatory  approval  of  any  of  our  drug  candidates,  or  anticipated  manufacturing  processes,  disease  indications,  or
labeling.  We  cannot  predict  the  likelihood,  nature  or  extent  of  government  regulation  that  might  arise  from  future  legislative  or
administrative action.

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Review and Approval for Licensing Biologics in the United States

In  the  United  States,  the  FDA  regulates  our  current  drug  candidates  as  biological  products,  or  biologics,  under  the  Federal  Food,
Drug,  and  Cosmetic  Act,  or  the  FDCA,  the  Public  Health  Service  Act  and  associated  implementing  regulations.  Biologics,  like  other
drugs, are used for the treatment, prevention or cure of disease in humans. In contrast to chemically synthesized small molecular weight
drugs,  which  have  a  well-defined  structure  and  can  be  thoroughly  characterized,  biologics  are  generally  derived  from  living  material
(human,  animal,  or  microorganism)  and  are  complex  in  structure,  and  thus  are  usually  not  fully  characterized.  Biologics  include
immunomedicines for cancer and other diseases.

Biologics are also subject to other federal, state and local statutes and regulations. The failure to comply with applicable statutory
and  regulatory  requirements  at  any  time  during  the  product  development  process,  approval  process  or  after  approval  may  subject  a
sponsor  or  applicant  to  administrative  or  judicial  enforcement  actions.  These  actions  could  include  the  suspension  or  termination  of
clinical trials by the FDA, the FDA’s refusal to approve pending applications or supplemental applications, withdrawal of an approval,
“Warning Letters” (official messages from the FDA to a manufacturer or other organization that it has violated some rule in a federally
regulated activity) or “Untitled Letters” (initial correspondences from the FDA with a regulated industry that cite violations that do not
meet  the  threshold  of  regulatory  significance  for  a  Warning  Letter  and  request  correction  of  the  violation),  product  recalls,  product
seizures, total or partial suspension of production or distribution, import detention, injunctions, fines, refusals of government contracts,
restitution, disgorgement of profits, or civil or criminal investigations and penalties brought by the FDA, the Department of Justice, or
other governmental entities.

An applicant seeking approval to market and distribute a biologic in the United States typically must undertake the following:

● completion of non-clinical laboratory tests and animal studies performed in accordance with the FDA’s good laboratory practice

regulations;

● submission  to  the  FDA  of  an  application  for  an  Investigational  New  Drug,  or  an  IND,  which  must  become  effective  before

clinical trials may begin and must be updated annually or when significant changes are made;

● manufacture, labeling and distribution of an investigational drug in compliance with current good manufacturing practice;

● approval by an independent institutional review board or ethics committee at each clinical site before each clinical trial may be

initiated;

● performance of adequate and well-controlled human clinical trials in accordance with the FDA’s current Good Clinical Practices
requirements, to establish the safety, purity and potency of the proposed biological drug candidate for its intended purpose;

● preparation  of  and  submission  to  the  FDA  of  a  biologics  license  application,  after  completion  of  all  pivotal  clinical  trials

requesting marketing approval for one or more proposed indications;

● satisfactory completion of an FDA Advisory Committee review, where appropriate or if applicable, as may be requested by the

FDA to assist with its review;

● satisfactory  completion  of  one  or  more  FDA  inspections  of  the  manufacturing  facility  or  facilities  at  which  the  proposed
product, or components thereof, are produced to assess compliance with current good manufacturing practice and data integrity
requirements to assure that the facilities, methods and controls are adequate to preserve the biologic’s identity, safety, quality,
purity and potency;

● satisfactory completion of FDA audits of selected clinical investigation sites to assure compliance with current Good Clinical

Practices requirements and the integrity of the clinical data;

● payment of user fees under the Prescription Drug User Fee Act for the relevant year;

● obtaining  FDA  review  and  approval  of  the  biologics  license  application  to  permit  commercial  marketing  of  the  licensed

biologic for particular indications for use in the United States; and

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● compliance  with  any  post-approval  requirements,  including  the  potential  requirement  to  implement  a  Risk  Evaluation  and

Mitigation Strategy, and the potential requirement to conduct post-approval studies.

The testing and approval process requires substantial time, effort and financial resources and we cannot be certain that any approvals

for our drug candidates will be granted on a timely basis, if at all.

From time to time, legislation is drafted, introduced and passed in the Congress of the United States that could significantly change
the statutory provisions governing the testing, approval, manufacturing and marketing of products regulated by the FDA. In addition to
new legislation, FDA regulations and policies are often revised or interpreted by the agency in ways that may significantly affect our
business  and  our  drug  candidates.  It  is  impossible  to  predict  whether  further  legislative  changes  will  be  enacted  or  whether  FDA
regulations, guidance, policies or interpretations will be changed or what the effect of such changes, if any, may be.

Preclinical and Clinical Development in the United States

Before an applicant of a biologics license application can begin testing the potential asset in human subjects, the applicant must first
conduct pre-clinical studies. Pre-clinical studies include laboratory evaluations of product chemistry, toxicity and formulation, as well as
in vitro  and  animal  studies  to  assess  the  potential  safety  and  activity  of  the  biologic  for  initial  testing  in  humans  and  to  establish  a
rationale for therapeutic use. Pre-clinical studies are subject to federal regulations and requirements, including good laboratory practice
regulations. The results of an applicant’s pre-clinical studies are submitted to the FDA as part of an IND.

An IND is a request for authorization from the FDA to administer an investigational new drug product to humans. An IND is an
exemption from the FDCA that allows an unapproved drug to be shipped in interstate commerce for use in an investigational clinical
trial. Such authorization must be secured prior to interstate shipment. In support of a request for an IND, applicants must submit a range
of  information,  including  pre-clinical  data,  manufacturing  information  and  a  detailed  protocol  for  each  clinical  trial.  Any  subsequent
protocol amendments must be submitted to the FDA as part of the IND.

Human clinical trials may not begin until an IND is effective. The IND automatically becomes effective 30 days after receipt by the
FDA, unless the FDA raises safety concerns or questions about the proposed clinical trial within the 30-day time period. In such a case,
the IND may be placed on clinical hold and the IND sponsor and the FDA must resolve any outstanding concerns or questions before the
clinical trial can begin. Submission of an IND therefore may or may not result in FDA authorization to begin a clinical trial.

The FDA may also place a clinical hold or partial clinical hold on such trial following commencement of a clinical trial under an
IND. A clinical hold is an order issued by the FDA to the sponsor to delay a proposed clinical investigation or to suspend an ongoing
investigation. A partial clinical hold is a delay or suspension of only part of the clinical work requested under the IND. For example, a
specific  protocol  or  part  of  a  protocol  is  not  allowed  to  proceed,  while  other  protocols  may  do  so.  No  more  than  30  days  after  the
imposition of a clinical hold or partial clinical hold, the FDA will provide the sponsor with a written explanation of the basis for the hold.
Following issuance of a clinical hold or partial clinical hold, an investigation may only resume after the FDA has notified the sponsor
that  the  investigation  may  proceed.  The  FDA  will  base  that  determination  on  information  provided  by  the  sponsor  correcting  the
deficiencies previously cited or otherwise satisfying the FDA that the investigation can proceed.

Clinical  trials  involve  the  administration  of  the  investigational  product  to  human  subjects  under  the  supervision  of  qualified
investigators in accordance with regulations of current Good Clinical Practices, which include the requirement that all research subjects
provide their informed consent for their participation in any clinical study. Clinical trials are conducted under protocols detailing, among
other things, the objectives of the study, the parameters to be used in monitoring safety and the effectiveness criteria to be evaluated. A
separate submission to the existing IND must be made for each successive clinical trial conducted during product development and for
any subsequent protocol amendments.

A  sponsor  may  choose,  but  is  not  required,  to  conduct  a  foreign  clinical  study  under  an  IND.  When  a  foreign  clinical  study  is
conducted under an IND, all FDA IND requirements must be met unless waived. When the foreign clinical study is not conducted under
an IND, the sponsor must ensure that the study complies with regulations of current Good Clinical Practices in order to use the study as
support  for  an  IND  or  application  for  marketing  approval,  including  review  and  approval  by  an  independent  ethics  committee  and
informed consent from subjects.

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Furthermore, an independent institutional review board for each site proposing to conduct the clinical trial must review and approve
the plan for any clinical trial and its informed consent form before the clinical trial begins at that site, and must monitor the study until
completed.  Regulatory  authorities,  the  institutional  review  board  or  the  sponsor  may  suspend  a  clinical  trial  at  any  time  on  various
grounds,  including  a  finding  that  the  subjects  are  being  exposed  to  an  unacceptable  health  risk  or  that  the  trial  is  unlikely  to  meet  its
stated objectives.

Some trials also include oversight by an independent group of qualified experts organized by the clinical trial sponsor, known as a
data  safety  monitoring  board.  Data  safety  monitoring  boards  provide  authorization  for  whether  or  not  a  trial  may  move  forward  at
designated check points based on access to certain data from the trial and may halt the clinical trial if a data safety monitoring board
determines that there is an unacceptable safety risk for subjects or based on other grounds, such as no demonstration of efficacy. Other
grounds for suspension or termination may be made based on evolving business objectives and/or competitive climate. There are also
requirements governing the reporting of ongoing clinical trials and clinical trial results to public registries.

Clinical Trials

For purposes of approval of biologics license application, clinical trials are typically conducted in the following sequential phases

that may overlap or be combined:

● Phase 1: The investigational product is initially introduced into a small number of healthy human subjects or patients with the
target disease or condition. These trials are designed to test the safety, dosage tolerance, absorption, metabolism and distribution
of the investigational product in humans and the side effects associated with increasing doses. These trials may also yield early
evidence of effectiveness. In the case of some products for severe or life-threatening diseases, especially when the product is
suspected or known to be unavoidably toxic, the initial human testing may be conducted in patients.

● Phase  2:  The  investigational  product  is  administered  to  a  limited  patient  population  with  a  specified  disease  or  condition  to
evaluate the preliminary efficacy, optimal dosages and dosing schedule and to identify possible adverse side effects and safety
risks.  Multiple  Phase  2  clinical  trials  may  be  conducted  to  obtain  information  prior  to  beginning  larger  and  more  expensive
Phase 3 clinical trials.

● Phase  3:  The  investigational  product  is  administered  to  an  expanded  patient  population  generally  at  multiple  geographically
dispersed  clinical  trial  sites  to  further  evaluate  dosage,  to  provide  statistically  significant  evidence  of  clinical  efficacy  and  to
further test for safety. These clinical trials are intended to generate sufficient data to statistically evaluate the efficacy and safety
of the product for approval, to establish the overall risk/benefit ratio of the investigational product and to provide an adequate
basis for product approval by the FDA.

In some cases, the FDA may require, or companies may voluntarily pursue, additional clinical trials after a product is approved to
gain  more  information  about  the  product,  referred  to  as  Phase  4  trials.  Such  post-approval  trials,  when  applicable,  are  conducted
following initial approval, typically to develop additional data and information relating to the biological characteristics of the product and
treatment of patients in the intended therapeutic indication.

Progress reports detailing the results of the clinical trials must be submitted at least annually to the FDA and more frequently if
serious adverse events occur. In addition, IND safety reports must be submitted to the FDA for any of the following: suspected serious
and unexpected adverse reactions; findings from epidemiological studies, pooled analysis of multiple studies, animal or in vitro testing,
or other clinical studies, whether or not conducted under an IND, and whether or not conducted by the sponsor, that suggest a significant
risk in humans exposed to the drug; and any clinically important increase in the rate of a serious suspected adverse reaction over such
rate listed in the protocol or investigator brochure, which is a comprehensive document summarizing the body of information about an
investigational product obtained during clinical and non-clinical trials.

Each  of  Phase  1,  Phase  2  and  Phase  3  clinical  trials  may  not  be  completed  successfully  within  any  specified  period,  or  at  all.
Furthermore, the FDA or the sponsor may suspend or terminate a clinical trial at any time on various grounds, including a finding that
the research patients are being exposed to an unacceptable health risk. Similarly, an independent institutional review board can suspend
or  terminate  approval  of  a  clinical  trial  at  its  institution,  or  an  institution  it  represents,  if  the  clinical  trial  is  not  being  conducted  in
accordance  with  the  institutional  review  board’s  requirements  or  if  the  drug  has  been  associated  with  unexpected  serious  harm  to
patients.  The  FDA  will  typically  inspect  one  or  more  clinical  sites  to  assure  compliance  with  current  Good  Clinical  Practices  and  the
integrity of the clinical data submitted.

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During clinical development, the sponsor often refines the indication and endpoints on which the biologics license application will
be based. For endpoints based on patient-reported outcomes, and observer-reported outcomes, the process typically is an iterative one.
The  FDA  has  issued  guidance  on  the  framework  it  uses  to  evaluate  patient-reported  outcomes  instruments.  Although  the  agency  may
offer advice on optimizing instruments for patient-reported outcomes and observer-reported outcomes during the clinical development
process, the FDA usually reserves final judgment until it reviews the biologics license application.

Concurrent with clinical trials, companies often complete additional animal studies, and develop additional information about the
chemistry  and  physical  characteristics  of  the  drug  and  finalize  a  process  for  manufacturing  the  product  in  commercial  quantities  in
accordance with requirements of Good Manufacturing Practice. The manufacturing process must be capable of consistently producing
quality batches of the drug candidate and, among other things, must develop methods for testing the identity, strength, quality, purity and
potency  of  the  final  drug.  Additionally,  appropriate  packaging  must  be  selected  and  tested  and  stability  studies  must  be  conducted  to
demonstrate that the drug candidate does not undergo unacceptable deterioration over its shelf life.

BLA Submission and Review

Assuming  successful  completion  of  all  required  clinical  testing  in  accordance  with  all  applicable  regulatory  requirements,  an
applicant may submit a biologics license application, or BLA, requesting licensing to market the biologic for one or more indications in
the United States. The BLA must include the results of product development, non-clinical studies and clinical trials; detailed information
on the product’s chemistry, manufacture and controls; and proposed labeling. Under the Prescription Drug User Fee Amendments, a BLA
submission is subject to an application user fee, unless a waiver or exemption applies.

The FDA will initially review the BLA for completeness before accepting it for filing. Under the FDA’s procedures, the agency has
60 days from its receipt of a BLA to determine whether the application will be accepted for filing and substantive review. If the agency
determines  that  the  application  does  not  meet  this  initial  threshold  standard,  the  FDA  may  refuse  to  file  the  application  and  request
additional information, in which case the application must be resubmitted with the requested information and review of the application
delayed.

With  certain  exceptions,  BLAs  must  include  a  pediatric  assessment,  generally  based  on  clinical  trial  data,  of  the  safety  and
effectiveness of the biologic in relevant pediatric populations. Under certain circumstances, the FDA may waive or defer the requirement
for a pediatric assessment, either at the sponsor’s request or by the agency’s initiative.

After the BLA is accepted for filing, the FDA reviews the BLA to determine, among other things, whether a product is safe, pure
and potent and if the facility in which it is manufactured, processed, packed or held meets standards designed to assure the product’s
continued identity, strength, quality, safety, purity and potency. The FDA may convene an advisory committee to provide clinical insight
on application review questions. Before approving a BLA, the FDA will typically inspect the facility or facilities where the product is
manufactured. The FDA will not approve an application unless it determines that the manufacturing processes and facilities comply with
current Good Manufacturing Practice and are adequate to assure consistent production of the product within required specifications. In
addition, the FDA expects that all data be reliable and accurate, and requires sponsors to implement meaningful and effective strategies
to manage data integrity risks. Data integrity is an important component of the sponsor’s responsibility to ensure the safety, efficacy and
quality of its product or products.

The FDA will typically inspect one or more clinical sites to assure compliance with regulations of current Good Clinical Practices
before  approving  a  BLA.  If  the  FDA  determines  that  the  application,  manufacturing  process  or  manufacturing  facilities  are  not
acceptable, it will outline the deficiencies in the submission and often will request additional testing or information. Notwithstanding the
submission of any requested additional information, the FDA ultimately may decide that the application does not satisfy the regulatory
criteria for approval.

FDA performance goals generally provide for action on a BLA within ten months of filing, which typically occurs within 60 days of
submission, but that deadline is extended in certain circumstances. Furthermore, the review process is often significantly extended by
FDA requests for additional information or clarification.

The FDA may refer applications for novel products or products that present difficult questions of safety or efficacy to an advisory
committee. Typically, an advisory committee consists of a panel that includes clinicians and other experts who will review, evaluate and
provide a recommendation as to whether the application should be approved and, if so, under what conditions. The FDA is not bound by
the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions and usually has
followed such recommendations.

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After  the  FDA  evaluates  a  BLA  and  conducts  inspections  of  manufacturing  facilities  where  the  investigational  product  and/or  its
components  will  be  produced,  the  FDA  may  issue  an  approval  letter  or  a  complete  response  letter.  An  approval  letter  authorizes
commercial  marketing  of  the  biologic  with  specific  prescribing  information  for  specific  indications.  A  complete  response  letter  will
describe all of the deficiencies that the FDA has identified in the BLA, except that where the FDA determines that the data supporting
the  application  are  inadequate  to  support  approval,  the  FDA  may  issue  the  complete  response  letter  without  first  conducting  required
inspections, testing submitted product lots and/or reviewing proposed labeling. If and when the deficiencies have been addressed to the
FDA’s satisfaction in a resubmission of the BLA, the FDA will issue an approval letter. In issuing the complete response letter, the FDA
may recommend actions that the applicant might take to place the BLA in condition for approval, including requests for additional data,
information or clarification. The FDA may delay or refuse approval of a BLA if applicable regulatory criteria are not satisfied, and may
require additional testing or information and/or require post-marketing studies and clinical trials. Even with submission of this additional
information, the FDA ultimately may decide that the application does not satisfy the regulatory criteria for approval.

During the approval process, the FDA will determine whether a Risk Evaluation and Mitigation Strategy, or REMS, is necessary to
assure the safe use of the biologic. A REMS is a safety strategy to manage a known or potential serious risk associated with a product
and  to  enable  patients  to  have  continued  access  to  such  medicines  by  managing  their  safe  use,  and  could  include  medication  guides,
physician communication plans or elements to assure safe use, such as restricted distribution methods, patient registries and other risk
minimization tools. If the FDA concludes that a REMS is needed, the BLA sponsor must submit a proposed REMS and the FDA will not
approve the BLA without a REMS that the agency has determined is acceptable.

In addition, under the Pediatric Research Equity Act of 2003, as amended and reauthorized, certain applications or supplements must
contain  data  that  are  adequate  to  assess  the  safety  and  effectiveness  of  the  drug  for  the  claimed  indications  in  all  relevant  pediatric
subpopulations, and to support dosing and administration for each pediatric subpopulation for which the product is safe and effective.
The FDA may, on its own initiative or at the request of the applicant, grant deferrals for submission of some or all pediatric data until
after approval of the product for use in adults, or full or partial waivers from the pediatric data requirements.

If  the  FDA  approves  a  product,  it  may  limit  the  approved  indications  for  use  for  the  product,  or  require  that  contraindications,
warnings  or  precautions  be  included  in  the  product  labeling.  The  FDA  may  also  require  that  post-approval  studies,  including  Phase  4
clinical  trials,  be  conducted  to  further  assess  the  drug’s  safety  after  approval.  The  FDA  may  prevent  or  limit  further  marketing  of  a
product based on the results of post-marketing studies or surveillance programs.

The FDA may also require testing and surveillance programs to monitor the product after commercialization. For biologics, such
testing may include official lot release, which requires the manufacturer to perform certain tests on each lot of the product before it is
released for distribution. The manufacturer then typically must submit samples of each lot of product to the FDA, together with a release
protocol showing a summary of the history of manufacture of the lot and the results of all of the manufacturer’s tests performed on the
lot. The FDA may also perform certain confirmatory tests on lots of some products itself, before releasing the lots for distribution by the
manufacturer.

After  approval,  many  types  of  changes  to  the  approved  product,  such  as  adding  new  indications,  manufacturing  changes  and
additional labeling claims, are often subject to further testing requirements and FDA review and approval, depending on the nature of the
post-approval  change.  The  FDA  may  withdraw  the  product  approval  if  compliance  with  pre-  and  post-marketing  requirements  is  not
maintained or if problems occur after the product reaches the marketplace.

Post-Approval Requirements

Any  products  manufactured  or  distributed  pursuant  to  FDA  approvals  are  subject  to  pervasive  and  continuing  regulation  by  the
FDA,  including,  among  other  things,  requirements  relating  to  recordkeeping,  periodic  reporting,  reporting  of  certain  deviations  and
adverse experiences, product sampling and distribution and advertising and promotion of the product. After approval, most changes to
the approved product, such as adding new indications or other labeling claims, are subject to FDA review and approval. There also are
continuing user fee requirements, under which the FDA assesses an annual program fee for each product identified in an approved BLA.
Biologic  manufacturers  and  their  third-party  contractors  are  required  to  register  their  establishments  with  the  FDA  and  certain  state
agencies. These establishments are subject to routine and periodic unannounced inspections by the FDA and certain state agencies for
compliance  with  current  Good  Manufacturing  Practice  and  data  integrity  requirements,  which  impose  certain  procedural  and
documentation  requirements  to  assure  quality  of  manufacturing  and  product.  The  FDA  has  increasingly  observed  cGMP  violations
involving data integrity during site inspections and investigating compliance with data integrity requirements is a significant focus of its
oversight.  Requirements  with  respect  to  data  integrity  include,  among  other  things,  controls  to  ensure  data  are  complete  and  secure;
activities documented at the time of performance; audit trail functionality; authorized access and limitations; validated computer systems;
and review of records for accuracy, completeness and compliance with established standards.

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Post-approval changes to the manufacturing process are strictly regulated, and, depending on the significance of the change, may
require  FDA  approval  before  being  implemented.  FDA  regulations  also  require  investigation  and  correction  of  any  deviations  from
current good manufacturing practice and impose reporting requirements upon us and any third-party manufacturers that we may decide
to  use.  Accordingly,  manufacturers  must  continue  to  expend  time,  money  and  effort  in  the  area  of  production  and  quality  control  to
maintain compliance with current good manufacturing practice, data integrity, pharmacovigilance (i.e., post-marketing safety reporting
obligations) and other aspects of regulatory compliance.

The  FDA  may  withdraw  a  product  approval  if  compliance  with  regulatory  requirements  and  standards  is  not  maintained  or  if
problems occur after the product reaches the market. Later discovery of previously unknown problems with a product, including adverse
events of unanticipated severity or frequency, or with manufacturing processes, or failure to comply with regulatory requirements, may
result in revisions to the approved labeling to add new safety information; imposition of post-approval studies or clinical trials to assess
new  safety  risks;  or  imposition  of  distribution  or  other  restrictions  under  a  Risk  Evaluation  and  Mitigation  Strategy.  Other  potential
consequences include:

● restrictions on the marketing or manufacturing of a product, complete withdrawal of the product from the market or product

recalls;

● fines, Warning Letters, Untitled Letters or holds on post-approval clinical studies;

● refusal of the FDA to approve pending applications or supplements to approved applications, or suspension or revocation of

existing product approvals;

● product  seizure  or  detention,  or  refusal  of  the  FDA  to  permit  the  import  or  export  of  products  that  it  believes  present  safety

problems by issuing an Import Alert;

● permanent injunctions and consent decrees, including the imposition of civil or criminal penalties; or

● voluntary product recall.

The FDA strictly regulates the marketing, labeling, advertising and promotion of prescription drug products placed on the market. A
company can make only those claims relating to safety and efficacy, purity and potency that are approved by the FDA and in accordance
with the provisions of the approved label. The FDA’s regulation includes, among other things, standards and regulations for direct-to-
consumer  advertising,  communications  regarding  unapproved  uses,  industry-sponsored  scientific  and  educational  activities  and
promotional  activities  involving  the  Internet  and  social  media.  Promotional  claims  relating  to  a  product’s  safety  or  effectiveness  are
prohibited before the drug is approved. After approval, a product generally may not be promoted for uses that are not approved by the
FDA,  as  reflected  in  the  product’s  prescribing  information.  In  the  United  States,  healthcare  professionals  are  generally  permitted  to
prescribe  drugs  for  such  uses  not  described  in  the  drug’s  labeling,  known  as  off-label  uses,  because  the  FDA  does  not  regulate  the
practice  of  medicine.  However,  FDA  regulations  impose  rigorous  restrictions  on  manufacturers’  communications,  prohibiting  the
promotion  of  off-label  uses.  It  may  be  permissible,  under  very  specific,  narrow  conditions,  for  a  manufacturer  to  engage  in  non-
promotional,  non-misleading  communication  regarding  off-label  information,  such  as  distributing  scientific  or  medical  journal
information.

If a company is found to have promoted off-label uses, it may become subject to adverse public relations and administrative and
judicial enforcement by the FDA, the U.S. Department of Justice or the Office of the Inspector General of the Department of Health and
Human Services, as well as other federal and state authorities. This could subject a company to a range of penalties that could have a
significant commercial impact, including civil and criminal fines and agreements that materially restrict the manner in which a company
promotes  or  distributes  products.  The  federal  government  has  levied  large  civil  and  criminal  fines  against  companies  for  alleged
improper promotion, and has also requested that companies enter into consent decrees and permanent injunctions under which specified
promotional conduct is changed or curtailed.

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The  distribution  of  prescription  drugs  and  biologics  are  subject  to  the  Drug  Supply  Chain  Security  Act,  which  requires
manufacturers and other stakeholders to comply with product identification, tracing, verification, detection and response, notification and
licensing  requirements.  In  addition,  the  Prescription  Drug  Marketing  Act,  and  its  implementing  regulations,  and  state  laws  limit  the
distribution of prescription pharmaceutical product samples, and the Drug Supply Chain Security Act imposes requirements to ensure
accountability  in  distribution  and  to  identify  and  remove  prescription  drug  and  biological  products  that  may  be  counterfeit,  stolen,
contaminated, or otherwise harmful from the market.

Patent Term Restoration and Marketing Exclusivity

After approval, owners of drug or biological product patents may apply for up to a five-year patent extension to restore a portion of
patent term lost during product development and FDA review of a BLA if approval of the application is the first permitted commercial
marketing or use of a biologic containing the active ingredient under the Drug Price Competition and Patent Term Restoration Act of
1984, referred to as the Hatch-Waxman Act. The allowable patent term extension is calculated as one-half of the product’s testing phase,
which  is  the  time  between  IND  and  BLA  submission,  and  all  of  the  review  phase,  which  is  the  time  between  BLA  submission  and
approval, up to a maximum of five years. The time can be shortened if the FDA determines that the applicant did not pursue approval
with due diligence. The total patent term after the extension may not exceed more than 14 years from the date of FDA approval of the
product.  Only  one  patent  claiming  each  approved  product  is  eligible  for  restoration  and  the  patent  holder  must  apply  for  restoration
within  60  days  of  approval.  The  United  States  Patent  and  Trademark  Office,  in  consultation  with  the  FDA,  reviews  and  approves  the
application for patent term restoration.

For patents that might expire during the application phase, the patent owner may request an interim patent extension. An interim
patent extension increases the patent term by one year and may be renewed up to four times. For each interim patent extension granted,
the post-approval patent extension is reduced by one year. The director of the United States Patent and Trademark Office must determine
that approval of the drug candidate covered by the patent for which a patent extension is being sought is likely. Interim patent extensions
are not available for a drug candidate for which a BLA has not been submitted.

Expedited Development and Review Programs

The  FDA  is  required  to  facilitate  the  development  and  expedite  the  review  of  pharmaceutical  products  that  are  intended  for  the
treatment  of  a  serious  or  life-threatening  condition  for  which  there  is  no  effective  treatment  and  which  demonstrate  the  potential  to
address unmet medical need for the condition. Under the fast track program, the sponsor of a new drug candidate may request the FDA to
designate the product for a specific indication as a fast track product concurrent with or after the filing of the IND for the drug candidate.
The FDA must determine if the drug candidate qualifies for fast track designation within 60 days after receipt of the sponsor’s request.

In  addition  to  other  benefits,  such  as  the  ability  to  have  more  frequent  interactions  with  the  FDA,  the  agency  may  initiate  review  of
sections of a fast track product’s BLA before the application is complete. This rolling review is available if the applicant provides and the
FDA  approves  a  schedule  for  the  submission  of  the  remaining  information  and  the  applicant  pays  applicable  user  fees.  However,  the
FDA’s review period under the Prescription Drug User Fee Amendments for a fast track application does not begin until the last section
of the BLA is submitted. In addition, the fast track designation may be withdrawn by the FDA if the agency believes that the designation
is no longer supported by data emerging in the clinical trial process.

Healthcare Regulation

Pharmaceutical Coverage and Reimbursement

Significant  uncertainty  exists  as  to  the  coverage  and  reimbursement  status  of  any  products  for  which  we  may  obtain  regulatory
approval. In the United States, sales of any products for which we may receive regulatory approval for commercial sale will depend in
part  on  the  availability  of  coverage  and  reimbursement  from  third-party  payors.  Third-party  payors  include  government  authorities,
managed care providers, private health insurers and other organizations. Third-party payors establish the coverage and reimbursement
policies  for  pharmaceutical  products,  and  the  marketability  of  any  products  for  which  we  may  receive  regulatory  approval  for
commercial sale depends on those payors’ coverage policies and reimbursement rates. Third-party payors may limit coverage to specific
products on an approved list, or formulary, which might not include one or more of our drug candidates, if approved. Third-party payors,
together with regulators and others, are increasingly challenging the prices charged for pharmaceutical products and health services, in
addition to their cost-effectiveness, safety and efficacy.

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In  addition,  no  uniform  policy  for  coverage  and  reimbursement  exists  in  the  United  States.  Third-party  payors  often  rely  upon
Medicare coverage policy and payment limitations in setting their own coverage and reimbursement policies, but also have their own
methods and approval process apart from Medicare determinations. Therefore, coverage and reimbursement rates can vary significantly
from payor to payor.

Moreover, obtaining coverage and adequate reimbursement is a time-consuming and costly process. We may be required to provide
scientific  and  clinical  support  for  the  use  of  any  product  to  each  third-party  payor  separately  with  no  assurance  that  approval  will  be
obtained,  and  we  may  need  to  conduct  expensive  pharmacoeconomic  studies  in  order  to  demonstrate  the  cost-effectiveness  of  our
products. We cannot be certain that our drug candidates will be considered cost-effective by third-party payors. This process could delay
the market acceptance of any drug candidates for which we may receive approval and could have a negative effect on our future revenues
and operating results.

Other U.S. Healthcare Laws and Compliance Requirements

In  the  United  States,  our  business  may  be  subject  to  healthcare  fraud  and  abuse  regulation  and  enforcement  by  both  the  federal
government and the states in which we conduct our business, particularly once third-party reimbursement becomes available for one or
more  of  our  products.  The  healthcare  fraud  and  abuse  laws  and  regulations  that  may  affect  our  ability  to  operate  include,  but  are  not
limited to:

● The federal Anti-Kickback Statute, which prohibits, among other things, knowingly and willfully soliciting, receiving, offering
or paying any remuneration (including any kickback, bribe or rebate), directly or indirectly, overtly or covertly, in cash or in
kind,  to  induce,  or  in  return  for,  either  the  referral  of  an  individual,  or  the  purchase,  lease,  order  or  recommendation  of  any
good, facility, item or service for which payment may be made, in whole or in part, under the Medicare and Medicaid programs,
or other federal healthcare programs;

● The federal civil and criminal false claims laws and civil monetary penalty laws, including the civil False Claims Act, which
prohibits, among other things, knowingly presenting, or causing to be presented, claims for payment of government funds that
are false or fraudulent, or knowingly making, or using or causing to be made or used, a false record or statement material to a
false or fraudulent claim to avoid, decrease, or conceal an obligation to pay money to the federal government;

● The  federal  Health  Insurance  Portability  and  Accountability  Act  of  1996,  which,  among  other  things,  prohibits  executing  a
scheme  to  defraud  any  healthcare  benefit  program,  including  private  third-party  payors,  and  prohibits  (i)  knowingly  and
willfully falsifying, concealing or covering up a material fact or making any materially false, fictitious or fraudulent statement
or  representation  and  (ii)  making  or  using  any  false  writing  or  document  knowing  the  same  to  contain  any  materially  false,
fictitious  or  fraudulent  statement  or  entry  in  connection  with  the  delivery  of  or  payment  for  healthcare  benefits,  items  or
services;

● The  Health  Insurance  Portability  and  Accountability  Act  of  1996,  as  amended  by  the  Health  Information  Technology  for
Economic and Clinical Health Act of 2009, and their respective implementing regulations, which impose requirements relating
to  the  privacy,  security  and  transmission  of  individually  identifiable  health  information  held  by  covered  entities,  including
health  plans,  healthcare  clearinghouses  and  certain  healthcare  providers,  and  their  business  associates,  individuals  or  entities
that perform certain services on behalf of a covered entity that involve the use or disclosure of individually identifiable health
information. The Health Information Technology for Economic and Clinical Health Act of 2009 also created new tiers of civil
monetary penalties, amended Health Insurance Portability and Accountability Act of 1996 to make civil and criminal penalties
directly  applicable  to  business  associates  and  gave  state  attorneys  general  new  authority  to  file  civil  actions  for  damages  or
injunctions in federal courts to enforce the Health Insurance Portability and Accountability Act of 1996 and seek attorneys’ fees
and costs associated with pursuing federal civil actions;

● The  federal  Physician  Payments  Sunshine  Act,  being  implemented  as  the  Open  Payments  Program,  which  requires
manufacturers of drugs, devices, biologics and medical supplies for which payment is available under Medicare, Medicaid or
the Children’s Health Insurance Program (with certain exceptions) to report annually to the Centers for Medicare and Medicaid
Services, information related to direct or indirect payments and other transfers of value to physicians and teaching hospitals, as
well as ownership and investment interests held in a company by physicians and their immediate family members. Since 2022,
applicable  manufacturers  have  been  required  to  report  information  regarding  payments  and  transfers  of  value  provided  to
physician assistants, nurse practitioners, clinical nurse specialists, certified nurse anesthetists and certified nurse-midwives; and

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● U.S.  state  and  local  laws  and  regulations,  such  as  state  anti-kickback  and  false  claims  laws,  which  may  apply  to  sales  or
marketing arrangements and claims involving healthcare items or services reimbursed by non-governmental third-party payors,
including  private  insurers;  state  laws  that  require  pharmaceutical  companies  to  comply  with  the  pharmaceutical  industry’s
voluntary  compliance  guidelines  and  the  compliance  guidance  promulgated  by  the  federal  government  or  otherwise  restrict
payments that may be made to healthcare providers; state laws that restrict the ability of manufacturers to offer co-pay support
to  patients  for  certain  prescription  drugs;  state  laws  that  require  drug  manufacturers  to  report  information  related  to  clinical
trials, or information related to payments and other transfers of value to physicians and other healthcare providers or marketing
expenditures; state laws that require drug manufacturers to report information on the pricing of certain drugs; state laws and
local  ordinances  that  require  identification  or  licensing  of  sales  representatives;  and  state  laws  governing  the  privacy  and
security of health information in certain circumstances, many of which differ from each other in significant ways and often are
not preempted by the Health Insurance Portability and Accountability Act of 1996, thus complicating compliance efforts.

We will be required to spend substantial time and money to ensure that our business arrangements with third parties comply with
applicable healthcare laws and regulations. Even then, governmental authorities may conclude that our business practices do not comply
with current or future statutes, regulations or case law involving applicable fraud and abuse or other healthcare laws and regulations. If
governmental authorities find that our operations violate any of these laws or any other governmental regulations that may apply to us,
we  may  be  subject  to  significant  civil,  criminal  and  administrative  penalties,  damages,  fines,  disgorgement,  individual  imprisonment,
exclusion  from  government  funded  healthcare  programs,  such  as  Medicare  and  Medicaid,  and  additional  reporting  obligations  and
oversight if we become subject to a corporate integrity agreement or other agreement to resolve allegations of non-compliance with these
laws, and we may be required to curtail or restructure our operations. Moreover, we expect that there will continue to be federal and state
laws  and  regulations,  proposed  and  implemented,  that  could  impact  our  operations  and  business.  In  addition,  the  approval  and
commercialization of any drug candidate we develop outside the United States will also likely subject us to foreign equivalents of the
healthcare  laws  mentioned  above,  among  other  foreign  laws.  The  extent  to  which  future  legislation  or  regulations,  if  any,  relating  to
health  care  fraud  and  abuse  laws  or  enforcement,  may  be  enacted  or  what  effect  such  legislation  or  regulation  would  have  on  our
business remains uncertain.

Healthcare Reform

In  the  United  States  there  have  been,  and  continue  to  be,  several  legislative  and  regulatory  changes  and  proposed  reforms  of  the
healthcare system to contain costs, improve quality and expand access to care. In the United States, there have been and continue to be a
number of healthcare-related legislative initiatives that have significantly affected the pharmaceutical industry. For example, the Patient
Protection  and  Affordable  Care  Act,  as  amended  by  the  Health  Care  and  Education  Reconciliation  Act  of  2010  in  March  2010,
substantially  changing  the  way  healthcare  is  financed  by  both  governmental  and  private  insurers  and  significantly  impacting  the  U.S.
pharmaceutical industry. Among other things, this act subjects biologics to potential competition by lower-cost biosimilars; addresses a
new methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are calculated for drugs that are
inhaled, infused, instilled, implanted or injected; increases the minimum Medicaid rebates owed by manufacturers under the Medicaid
Drug Rebate Program and extends the rebate program to individuals enrolled in Medicaid managed care organizations; establishes annual
fees  and  taxes  on  manufacturers  of  certain  branded  prescription  drugs;  and  creates  a  new  Medicare  Part  D  coverage  gap  discount
program in which, as a condition of coverage of its products under Medicare Part D, manufacturers must now agree to offer 70% point-
of-sale discounts off negotiated prices of applicable brand drugs to eligible beneficiaries during their coverage gap period.

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Some  of  the  provisions  of  this  act  have  yet  to  be  fully  implemented,  while  certain  provisions  have  been  subject  to  judicial  and
Congressional challenges. In addition, there have been efforts by the Trump Administration to repeal or replace certain aspects of this act
and to alter the implementation of this act and related laws. For example, Congress has considered legislation that would repeal or repeal
and replace all or part of this act. While Congress has not passed comprehensive repeal legislation, bills affecting the implementation of
certain taxes under this act have been signed into law. The Tax Cuts and Jobs Act of 2017, includes a provision repealing, effective on
January 1, 2019, the tax-based shared responsibility payment imposed by the Health Care and Education Reconciliation Act of 2010 on
certain  individuals  who  fail  to  maintain  qualifying  health  coverage  for  all  or  part  of  a  year  commonly  referred  to  as  the  “individual
mandate.” On January 22, 2018, President Trump signed a continuing resolution on appropriations for fiscal year 2018 that delayed the
implementation of certain fees required by the Health Care and Education Reconciliation Act of 2010, including the so-called “Cadillac”
tax on certain high cost employer-sponsored insurance plans, the annual fee imposed on certain high cost employer-sponsored insurance
plans, the annual fee imposed on certain health insurance providers based on market share and the medical device excise tax on non-
exempt medical devices. The Bipartisan Budget Act of 2018, among other things, amends the Health Care and Education Reconciliation
Act of 2010, effective January 1, 2019, to reduce the coverage gap in most Medicare drug plans, commonly referred to as the “donut
hole.” In addition, in July 2018, the Centers for Medicare and Medicaid Services issued a final rule permitting further collections and
payments to and from certain ACA qualified health plans and health insurance issuers under the risk adjustment program of Health Care
and Education Reconciliation Act of 2010 in response to the outcome of federal district court litigation regarding the method Centers for
Medicare and Medicaid Services uses to determine this risk adjustment. Additional legislative changes or regulatory changes related to
the Health Care and Education Reconciliation Act of 2010 remain possible. In December 2018, a United States District Court Judge for
the Northern District of Texas ruled that the entire Health Care and Education Reconciliation Act of 2010 is unconstitutional because the
tax penalty associated with the “individual mandate” was repealed by Congress as part of the Tax Act. This ruling is under appeal and
stayed  pending  appeal.  While  the  United  States  District  Court  Judge  for  the  Northern  District  of  Texas,  as  well  as  the  Trump
Administration and the Centers for Medicare and Medicaid Services, have stated that the ruling will have no effect while this appeal is
pending, it is unclear how this decision, subsequent appeals and other efforts to invalidate the Health Care and Education Reconciliation
Act of 2010, regulations promulgated under the act or portions thereof, will impact the act and its implementation.

Additionally, there has been increasing legislative and enforcement interest in the United States with respect to specialty drug pricing
practices.  Specifically,  there  have  been  several  U.S.  Congressional  inquiries  and  proposed  and  enacted  federal  and  state  legislation
designed to, among other things, bring more transparency to drug pricing; reduce the cost of prescription drugs under Medicare; review
the relationship between pricing and manufacturer patient programs; and reform government program reimbursement methodologies for
drugs. For example, the Trump Administration released a “Blueprint” to lower drug prices and reduce out-of-pocket costs of drugs that
contains  additional  proposals  to  increase  manufacturer  competition,  increase  the  negotiating  power  of  certain  federal  healthcare
programs, incentivize manufacturers to lower the list price of their products and reduce the out-of-pocket costs of drug products paid by
consumers.  On  January  31,  2019,  Office  of  the  Inspector  General  of  the  Department  of  Health  and  Human  Services  proposed
modifications  to  the  federal  Anti-Kickback  Statute  discount  safe  harbor  for  the  purpose  of  reducing  the  cost  of  drug  products  to
consumers which, among other things, if finalized, will remove safe harbor protection from rebates paid by manufacturers to Medicare
Part  D  plans,  Medicaid  managed  care  organizations  and  pharmacy  benefit  managers  working  with  these  organizations.  Although  a
number  of  these,  and  other  proposed  measures  may  require  additional  authorization  to  become  effective,  Congress  and  the  Trump
Administration  have  each  indicated  that  they  would  continue  to  seek  new  legislative  and/or  administrative  measures  to  control  drug
costs. Individual states in the United States have also increasingly passed legislation and implemented regulations designed to control
pharmaceutical  and  biological  product  pricing,  including  price  or  patient  reimbursement  limitations,  discounts,  restrictions  on  certain
product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from
other countries and bulk purchasing. In addition, regional healthcare authorities and individual hospitals are increasingly using bidding
procedures  to  determine  what  pharmaceutical  products  and  which  suppliers  will  be  included  in  their  prescription  drug  and  other
healthcare programs.

Moreover, on May 30, 2018, the Right to Try Act was signed into law. The law, among other things, provides a federal framework
for  certain  patients  to  access  certain  investigational  new  drug  products  that  have  completed  a  Phase  1  clinical  trial  and  that  are
undergoing  investigation  for  FDA  approval.  Under  certain  circumstances,  eligible  patients  can  seek  treatment  without  enrolling  in
clinical  trials  and  without  obtaining  FDA  permission  under  the  FDA  expanded  access  program.  There  is  no  obligation  for  a
pharmaceutical manufacturer to make its drug products available to eligible patients as a result of the Right to Try Act.

Manufacturing and Supply

Following  the  divestiture  of  the  Greater  China  assets  and  business  operations,  we  primarily  rely  on  contract  development  and

manufacturing organizations, or CDMOs to manufacture our drug candidates.

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We currently outsource the manufacturing of clinical trial material for our clinical stage projects to leading CDMOs in China such as
WuXi Biologics, which have established track records for both clinical trial material supply and commercial material supply. We have
assembled  a  seasoned  internal  team  with  deep  experience  in  this  area  to  drive  and  monitor  this  process.  For  contingency  planning
purposes, we have also established relationships with other CDMOs. We expect to continue our outsourcing relationships with contract
manufacturers  to  meet  the  ongoing  needs  for  the  development  of  our  drug  candidates.  We  have  framework  agreements  with  these
external  service  providers,  under  which  they  provide  services  to  us  on  a  project-by-project  basis.  We  also  monitor  the  manufacturing
activities of clinical trial material at CDMOs to ensure the compliance with local and international current good manufacturing practice
and applicable regulations. Currently, our contract manufacturers obtain raw materials and supplies for the manufacturing activities from
multiple suppliers who we believe have sufficient capacity to meet our demands. We typically order materials and services on a purchase
order basis. We also enter into long-term capacity or minimum supply arrangements with them.

Historically,  we  invested  in  a  manufacturing  facility  under  construction  by  I-Mab  Hangzhou  and,  through  our  wholly-owned
subsidiary,  were  the  largest  shareholder  of  I-Mab  Hangzhou.  Upon  the  occurrence  of  certain  triggering  events  as  specified  in  the
shareholders agreement among I-Mab Hangzhou, we, through our wholly-owned subsidiary, and other domestic investors, including but
not limited to I-Mab Hangzhou’s failure to accomplish certain public offering condition, we may be obligated to repurchase the equity
held  by  other  domestic  investors  in  cash  or  in  our  stocks.  In  connection  with  the  divestiture  of  the  Greater  China  assets  and  business
operations, we have transferred most of the equity interests we held in I-Mab Hangzhou to certain participating shareholders of I-Mab
Hangzhou in exchange for extinguishment of the existing repurchase obligations owed by I-Mab Hong Kong to those shareholders in the
amount  of  approximately  US$183  million.  As  a  result,  we  subsequently  became  a  minority  shareholder,  and  I-Mab  Hangzhou  has
become an unconsolidated investee of our company. We may seek to contract with I-Mab Hangzhou or other manufacturing facilities to
manufacture our product candidates in the future, which could add to our costs.

Code of Conduct

We have formulated a code of conduct that covers business ethics, responsible research and development activities, public relations,
intellectual property and data protection, workplace, assets, corporate governance, concerns reporting and other behaviors, and serves as
a  guide  for  all  employees  and  third  parties  to  take  compliance  actions  in  business  activities.  We  have  arranged  compliance  training
courses  for  newly  hired  employees  to  help  them  understand  the  business  code  of  conduct  that  falls  in  line  with  industry  and  our
standards. In addition, we have adopted an employee handbook which describes the compliance management system implemented at I-
Mab to ensure compliance with applicable legal and regulatory requirements.

Quality Control and Assurance

Our  senior  management  is  firmly  committed  to  delivering  our  quality  performance,  actively  involved  in  allocating  sufficient

resources to quality management system and setting quality governance mechanism.

For  pre-clinical  and  clinical  trials,  the  overall  quality  management  outlines  the  implementation  of  our  business  policies  and
procedures in order to consistently comply with the regulatory requirements, including good laboratory practices, good clinical practices,
good pharmacovigilance practice and other applicable regulatory requirements in the performance of the trials. This includes:

● predefined policies and procedures to manage pre-clinical and clinical studies;

● dedicated resources and personnel with well delineated roles and responsibilities;

● quality risk management across the product lifecycle;

● continuous quality management system improvement;

● non-conformance management via quality issue management process;

● development and execution of quality audit program; and

● regulatory inspection readiness.

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For chemistry, manufacturing and controls, we have established a quality management system to oversee the process development
and  API  and  drug  production  at  the  contract  development  and  manufacturing  organizations.  This  system  takes  a  holistic  approach
bringing senior management, quality assurance team and company policies together to create an efficient and agile quality culture. Our
quality commitment with respect to chemistry, manufacturing and controls includes, but not limited to:

● ensure  that  the  product  manufacturing,  releasing,  packaging,  storage,  and  shipment  meets  all  specifications  and  the

requirements of the FDA, current good manufacturing practice or other applicable laws and regulations;

● review  of  process  deviations  and  changes,  root  cause  analysis,  impact  assessment,  corrective  and  preventative  actions,  and

validation;

● ensure the consistency of key quality practices with our contract development and manufacturing organizations;

● proactive quality system review based on audits, process data analysis, equipment condition, and periodic review of internal and

external sources of data; and

● assessment of regulatory guidance and ensure readiness for regulatory inspections.

C. Organizational Structure

The following chart illustrates our company’s updated organizational structure, including our principal subsidiaries, as of the date of

this annual report:

D. Property, Plant and Equipment

Our  headquarters  is  located  in  Rockville,  MD,  where  we  lease  and  occupy  approximately  744  square  meters  as  office  space.  We
currently lease approximately 54 square meters of office space in Tianjin, and approximately 1,081 square meters of office space and
laboratories in San Diego. The terms of these leases range from one year to seven years.

ITEM 4A. UNRESOLVED STAFF COMMENTS

None.

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ITEM 5.

OPERATING AND FINANCIAL REVIEW AND PROSPECTS

You should read the following discussion and analysis of our financial condition and results of operations in conjunction with our

consolidated financial statements and the related notes included elsewhere in this annual report on Form 20-F.

This discussion may contain forward-looking statements based upon current expectations that involve risks and uncertainties. Our
actual results may differ materially from those anticipated in these forward-looking statements as a result of various factors, including
those set forth under “Item 3. Key Information—D. Risk Factors” or in other parts of this annual report on Form 20-F.

A. Operating Results

Overview

We  are  a  U.S.-based  global  biotech  company  exclusively  focused  on  the  development  and  potential  commercialization  of  highly
differentiated immunotherapies for the treatment of cancer. Following the divestiture of the Greater China assets and business operations
and  as  of  the  date  of  this  annual  report,  we  have  developed  an  innovative  pipeline  of  three  clinical  stage  assets  through  our  internal
research and development efforts and collaboration arrangements with global pharmaceutical and biotech companies.

Since the commencement of our operation in 2014, we have devoted most of our efforts and financial resources to organizing and
staffing our operations, formulating business planning, raising capital, establishing our intellectual property portfolio and conducting pre-
clinical and clinical trials of our drug candidates. On February 6, 2024, we entered into definitive agreements to divest the Greater China
assets and business operations, including our rights to the Greater China portfolio, to I-Mab Hangzhou for an aggregate consideration of
the  RMB  equivalent  of  up  to  US$80  million,  contingent  on  the  achievement  of  certain  future  regulatory  and  sales-based  milestone
events. After the completion of the divestiture, we no longer own any rights to the Greater China portfolio.

We  have  not  generated  any  revenue  from  the  sales  of  our  products,  and  as  a  result,  we  had  incurred  net  losses  since  the
commencement of our operations to 2023, except that in 2020, we generated net income of RMB470.9 million, primarily attributable to
the revenues recognized in connection with the strategic collaboration with AbbVie of RMB1,542.7 million. In 2021, 2022 and 2023, our
net losses were RMB2,331.5 million, RMB2,507.3 million and RMB1,465.7 million (US$206.4 million), respectively. We do not expect
to generate product revenue unless and until we obtain marketing approval for and commercialize a drug candidate, and we cannot assure
you that we will ever generate significant revenue or profits.

Key Factors Affecting Our Results of Operations

Our  results  of  operations,  financial  condition,  and  the  year-to-year  comparability  of  our  financial  results  have  been,  and  are

expected to continue to be, principally affected by the below factors:

Cost and Expenses Structure

Our  results  of  operations  are  significantly  affected  by  our  cost  structure,  which  primarily  consists  of  research  and  development

expenses and administrative expenses.

Research  and  development  activities  are  central  to  our  business  model.  We  believe  our  ability  to  successfully  develop  drug
candidates  is  the  primary  factor  affecting  our  long-term  competitiveness,  as  well  as  our  future  growth  and  development.  Developing
high-quality  drug  candidates  requires  a  significant  investment  of  resources  over  a  prolonged  period  of  time,  and  a  core  part  of  our
strategy is to continue making sustained investments in this area. Since our inception, we have focused our resources on our research and
development activities, including conducting pre-clinical studies and clinical trials, and activities related to regulatory filings for our drug
candidates. Our research and development expenses primarily include the following:

● costs related to development of our pipeline assets under all stages including discovery, pre-clinical testing or clinical trials;

● patent license fees and other fees under the licensing, collaboration and development agreements with respect to our in-licensed

drug candidates; and

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● employee  salaries  and  related  benefit  costs,  including  share-based  compensation  expenses,  for  research  and  development

personnel and key management.

At this time, we are unable to predict when, if ever, we will be able to achieve profitability. Even if we achieve profitability in the
future, we may not be able to sustain profitability in subsequent periods thereafter. This is due to the numerous risks and uncertainties
associated with developing such drug candidates, including the uncertainty of:

● successful enrollment in and completion of clinical trials;

● establishing an appropriate safety profile;

● establishing commercial manufacturing capabilities or making arrangements with third-party manufacturers;

● receipt of marketing approvals from applicable regulatory authorities;

● commercializing the drug candidates, if and when approved, whether alone or in collaboration with others;

● obtaining and maintaining patent and trade secret protection and regulatory exclusivity for our drug candidates;

● continued acceptable safety profiles of the products following approval; and

● retention of key research and development personnel.

Any  change  in  the  outcome  of  any  of  these  variables  with  respect  to  the  development  of  any  of  our  drug  candidates  would
significantly change the costs, timing and viability associated with the development of that drug candidate. Following the divestiture of
our Greater China assets and business operations, we expect research and development costs to decrease in the foreseeable future, as we
continue to support and advance the clinical trials of our drug candidates.

Our administrative expenses consist primarily of employee salaries and related benefit costs. Other administrative expenses include
professional fees for consulting and auditing as well as other direct and allocated expenses such as rent on our facilities, travel costs and
other supplies used in administrative activities. Following the divestiture of our Greater China assets and business operations, we expect
our administrative expenses to decrease in the future to support our pipeline assets and research and development efforts.

Revenue from Out-Licensing Agreements

We continue to seek out-licensing opportunities for our drug assets through our network of global partnerships and alliances. As we
have not obtained marketing approval for or commercialized a drug candidate, our revenues at the current stage are primarily subject to
the availability of the payments from granting licenses to research, develop and otherwise exploit certain of our drug assets, and supply
of the investigational products thereof, which primarily contributed to our revenues in 2020, 2021 and 2023. See “Item 4. Information on
the Company—B. Business Overview—Licensing and Collaboration Arrangements” for more information on the existing out-licensing
arrangements.”  However,  substantial  uncertainties  remain  as  to  the  availability  and  the  recognition  of  revenue  from  out-licensing
agreement. For example, we recognized an aggregate revenue of US$48.0 million in 2020 and 2021 in relation to our collaboration with
AbbVie  based  on  the  probability  of  achieving  a  key  milestone.  However,  we  witnessed  an  amendment  to  the  overall  collaboration
arrangement  with  AbbVie,  which  resulted  in  a  lowered  probability  of  achieving  such  key  milestone  and  a  reversal  of  revenue  of
US$-48.0 million (equivalent to RMB-314.2 million) in 2022. In September 2023, we received a notice from AbbVie, terminating the
collaboration agreement in its entirety.

In addition, after validating clinical safety and preliminary efficacy of a drug candidate in our Global portfolio in clinical trials in the
United States, we may elect to out-license certain rights of such drug candidate, but we may choose to retain these rights for the United
States or other countries or regions as we may deem fit. Before the commercialization of one or more of our drug candidates, we expect
that the majority of our revenue will continue to be generated from out-licensing our intellectual properties.

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Funding for Our Operations

During the periods presented, we funded our operations primarily from financing through the issuance and sale of preferred shares
and convertible promissory notes in private placement transactions. Going forward, in the event of successful commercialization of one
or more of our drug candidates, we expect to fund our operations in part with revenue generated from sales of our commercialized drug
products.  In  addition,  we  may  require  further  funding  through  public  or  private  offerings,  debt  financing,  collaboration,  and  licensing
arrangements or other sources. Any fluctuation in our ability to fund our operations will impact our cash flow plan and our results of
operations.

Our Ability to Commercialize Our Drug Candidates

Our business and results of operations depend on our ability to commercialize our drug candidates, once and if those candidates are
approved  for  marketing  by  the  applicable  health  authority.  Currently,  our  pipeline  consists  of  three  clinical  stage  drug  candidates.
Although we currently do not have any product approved for commercial sale and have not generated any revenue from product sales,
we expect to generate revenue from sales of drug candidates after we complete the clinical development, obtain regulatory approval, and
successfully  commercialize  such  drug  candidates.  See  “Item  4.  Information  on  the  Company—B.  Business  Overview—Our  Drug
Pipeline” for more information on the development status of our various drug candidates.

The Effect of Our Acquisition of I-Mab Tianjin and Our Divestiture of the Greater China Assets and Business Operations

We acquired a controlling interest in I-Mab Tianjin on July 15, 2017 and the remaining interest in I-Mab Tianjin in May 2018. Since
our  acquisition  of  the  controlling  interest  in  I-Mab  Tianjin  on  July  15,  2017,  I-Mab  Tianjin  has  been  consolidated  into  our  results  of
operations.  Shortly  after  we  acquired  the  controlling  interest  in  I-Mab  Tianjin,  we  integrated  the  operations  of  I-Mab  Tianjin  into  our
operations.  I-Mab  Tianjin  did  not  generate  any  external  revenue  from  July  15,  2017  to  December  31,  2023.  In  connection  with  our
acquisition of I-Mab Tianjin, we identified intangible assets of RMB148.8 million and goodwill of RMB162.6 million of I-Mab Tianjin.
Goodwill is not amortized, but impairment of goodwill assessment is performed on at least an annual basis on December 31 or whenever
events  or  changes  in  circumstances  indicate  that  the  carrying  value  of  the  reporting  unit  exceeds  its  fair  value.  For  the  years  ended
December  31,  2021,  2022  and  2023,  we  recognized  goodwill  impairment  in  the  amount  of  nil,  nil  and  RMB162.6  million  (US$22.9
million), respectively. Impairment charges could substantially affect our results of operations in the periods of such charges. In addition,
impairment charges would negatively impact our financial ratios and could limit our ability to obtain financing in the future.

On February 6, 2024, we entered into definitive agreements to divest the Greater China assets and business operations, including our
rights to the Greater China portfolio, to I-Mab Hangzhou for an aggregate consideration of the RMB equivalent of up to US$80 million,
contingent on the achievement of certain future regulatory and sales-based milestone events. After the completion of the divestiture, we
do  not  own  any  rights  to  the  Greater  China  portfolio,  including  the  Greater  China  rights  for  eftansomatropin  alfa,  felzartamab,
uliledlimab, and givastomig. We will no longer bear future development costs of the Greater China assets and business operations. The
transaction also extinguishes existing repurchase obligations owed by a wholly owned subsidiary of ours in the amount of approximately
US$183 million.

As a result of our divestiture of the Greater China assets and business operations, we have ceased to consolidate the divested entities,
assets and businesses as well as their corresponding financial results from the second quarter of 2024. The audited consolidated financial
information presented in this annual report did not take into account the divestiture of the Greater China assets and business operations
that was closed in April 2024. For the year ending December 31, 2024, we expect that our financial condition and results of operations
will be materially affected and our historical results will not be indicative of future financial condition or results of operations.

Key Components of Results of Operations

Revenues

For  the  years  ended  December  31,  2021  and  2022,  we  generated  revenue  from  (i)  licensing  and  collaboration,  primarily  through
granting licenses to use and otherwise exploiting certain of our intellectual properties in connection with our drug assets, and (ii) supply
of investigational products to AbbVie. The decrease in 2022 net revenue was primarily due to a non-cash adjustment of US$-48.0 million
(equivalent  to  RMB-314.2  million)  recorded  in  the  second  half  of  2022  following  the  amendment  to  the  original  license  and
collaboration agreement with AbbVie in August 2022. For the year ended December 31, 2023, we generated revenue from the supply of
investigational products to AbbVie and Human Immunology Biosciences, Inc.

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Research and Development Expenses

Research  and  development  expenses  primarily  consist  of:  (i)  payroll  and  other  related  expenses  of  research  and  development
personnel, (ii) fees associated with the exclusive development rights of our in-licensed drug candidates, (iii) fees for services provided by
CROs, investigators and clinical trial sites that conduct our clinical studies, and (iv) expenses relating to the development of our drug
candidates, including raw materials and supplies, product testing, depreciation, and facility related expenses.

Our  research  and  development  activities  in  2023  were  primarily  related  to  the  former  Greater  China  portfolio.  Following  the
completion  of  the  divestiture  of  the  Greater  China  assets  and  business  operations,  our  current  research  and  development  activities
primarily relate to the clinical development of the following investigational drugs:

● Uliledlimab, a highly differentiated CD73 antibody for solid tumors, if approved;

● Givastomig, a novel, tumor-dependent T cell engager for gastric and other cancers, if approved; and

● Ragistomig, a PD-L1-based tumor-dependent T cell engager for solid tumors, if approved.

We  incurred  research  and  development  expenses  of  RMB1,213.0  million,  RMB904.9  million  and  RMB810.6  million  (US$114.2
million) for the years ended December 31, 2021, 2022 and 2023, respectively, representing 57.4%, 52.6% and 64.2% of our total research
and  development  and  administrative  expenses  for  the  corresponding  periods.  We  expect  our  research  and  development  expenses  to
decrease in relation to prior years, due to a streamlined operating model and a more focused pipeline strategy.

Administrative Expense

Administrative expenses primarily consist of salaries and related benefit costs, including share-based compensation, for employees
engaged  in  managerial  and  administrative  positions  or  involved  in  general  corporate  functions,  professional  fees  for  consulting  and
auditing as well as other direct and allocated expenses such as rent on our facilities, travel costs and other supplies used in administrative
activities.  For  the  years  ended  December  31,  2021,  2022  and  2023,  our  administrative  expenses  amounted  to  RMB899.9  million,
RMB815.8  million  and  RMB453.0  million  (US$63.8  million),  respectively.  We  expect  our  administrative  expenses  to  decrease  in
relation to prior years, due to a streamlined operating model with less employees and a more focused pipeline strategy.

Impairment of Goodwill

For  the  year  ended  December  31,  2023,  we  recognized  an  impairment  of  goodwill  of  RMB162.6  million  (US$22.9  million).  The
goodwill impairment resulted from our annual impairment analysis and reflected the continued disconnect between I-Mab’s anticipated
future performance and present uncertainty reflected in its market valuation.

Interest Expense

Interest expense consists primarily of interest expenses on our short-term bank borrowings.

Interest Income

Interest income consists primarily of interest income derived from our term deposit and restricted cash pledged as collateral for a

working capital loan.

Other Income (Expenses), Net

Other income (expenses), net consists primarily of income from the equity transfer of I-Mab Hangzhou, fair value change of short-

term and other investments, fair value change of put right liabilities, net foreign exchange gains (losses) and subsidy income.

Equity In Loss of Affiliates

Equity in loss of affiliates consists primarily of the loss recognized based on our proportion ownership in I-Mab Hangzhou.

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Taxation

Cayman Islands

I-Mab, our holding entity, is incorporated in the Cayman Islands. According to Harney Westwood & Riegels, our Cayman Islands
counsel, the Cayman Islands currently levies no taxes on individuals or corporations based upon profits, income, gains or appreciation
and there is no taxation in the nature of inheritance tax or estate duty. There are no other taxes likely to be material to us levied by the
Government  of  the  Cayman  Islands,  except  for  stamp  duties,  which  may  be  applicable  on  instruments  executed  in,  or  brought  to,  or
produced before a court of the Cayman Islands. The Cayman Islands is not a party to any double tax treaties that are applicable to any
payments made to or by our company. There are no exchange control regulations or currency restrictions in the Cayman Islands.

Hong Kong

I-Mab, our holding entity, holds a business registration and tax file number in Hong Kong. I-Mab Biopharma Hong Kong Limited is
incorporated in Hong Kong. Companies registered in Hong Kong are subject to Hong Kong profits tax on the taxable income as reported
in  their  respective  statutory  financial  statements  adjusted  in  accordance  with  the  Hong  Kong  tax  laws.  Under  the  current  Hong  Kong
Inland Revenue Ordinance, from the year of assessment 2018/2019 onwards, companies registered in Hong Kong are subject to profits
tax at the rate of 8.25% on assessable profits up to HK$2,000,000; and 16.5% on any part of assessable profits over HK$2,000,000. For
the years ended December 31, 2021, 2022 and 2023, the income tax expenses recorded in the consolidated statements of comprehensive
income (loss) for I-Mab were nil, RMB0.7 million and nil, respectively. For the years ended December 31, 2021, 2022 and 2023, I-Mab
Biopharma Hong Kong Limited did not make any provisions for Hong Kong profit tax as there were no assessable profits derived from
or earnings in Hong Kong for any of the periods presented. Under the Hong Kong tax law, I-Mab and I-Mab Biopharma Hong Kong
Limited is exempted from income tax on its foreign-derived income and there are no withholding taxes in Hong Kong on remittance of
dividends.

United States

I-Mab Biopharma US Ltd. is incorporated in Maryland and is subject to U.S. federal corporate income tax at a rate of 21%. It is also
subject to state income tax in Maryland at a rate of 8.25%. I-Mab Biopharma US Ltd. has no taxable income for all periods presented and
therefore no provision for income taxes is required.

China

On March 16, 2007, the National People’s Congress of the PRC enacted the Corporate Income Tax Law (as amended in 2017 and
2018, respectively), under which Foreign Investment Enterprises and domestic companies would be subject to corporate income tax at a
uniform  rate  of  25%.  The  Corporate  Income  Tax  Law  became  effective  on  January  1,  2008.  Under  the  Corporate  Income  Tax  Law,
preferential  tax  treatments  are  granted  to  entities  which  conduct  businesses  in  certain  encouraged  sectors  and  to  entities  otherwise
classified as “High and New Technology Enterprises.”

Our PRC subsidiary is subject to the statutory income tax rate of 25%. No provision for income taxes has been accrued because our

PRC subsidiary is in cumulative loss positions for all the periods presented.

A  valuation  allowance  is  provided  to  reduce  the  amount  of  deferred  tax  assets  if  it  is  considered  more  likely  than  not  that  some
portion or all of the deferred tax assets will not be realized in the foreseeable future. In making such determination, we evaluate a variety
of positive and negative factors including our operating history, accumulated deficit, the existence of taxable temporary differences and
reversal periods.

We have incurred net accumulated operating losses for income tax purposes since our inception. We believe that it is more likely
than not that these net accumulated operating losses will not be utilized in the future based on the assessment as of December 31, 2023.
Therefore, we have provided full valuation allowances for the deferred tax assets as of December 31, 2021, 2022 and 2023.

We evaluate each uncertain tax position (including the potential application of interest and penalties) based on the technical merits,
and measure the unrecognized benefits associated with the tax positions. As of December 31, 2021, 2022 and 2023, we did not have any
significant unrecognized uncertain tax positions.

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Results of Operations

The following table sets forth a summary of our consolidated results of operations for the periods indicated. This information should
be  read  together  with  our  consolidated  financial  statements  and  related  notes  included  elsewhere  in  this  annual  report.  The  operating
results in any period are not necessarily indicative of the results that may be expected for any future period.

Summary  Consolidated  Statements  of  Comprehensive  Income

(Loss) Data:

Revenues
Licensing and collaboration revenue
Supply of investigational products
Total revenues
Cost of revenues
Expenses
Research and development expenses (1)
Administrative expenses (1)
Impairment of goodwill
Loss from operations
Interest income
Interest expense
Other income (expenses), net
Equity in loss of affiliates (1)
Loss before income tax expense
Income tax benefit (expense)
Net loss attributable to I-Mab
Net loss attributable to ordinary shareholders
Other comprehensive (loss) income
Foreign currency translation adjustments, net of nil tax
Total comprehensive loss attributable to I-Mab
Net loss attributable to ordinary shareholders
Weighted-average number of ordinary shares used in calculating net

loss per share

Basic
Diluted
Net loss per share attributable to ordinary shareholders
Basic
Diluted
Net (loss) income per ADS attributable to ordinary shareholders
—Basic
—Diluted

Note:

117

For the Year Ended December 31,

2021
RMB

2022
RMB

2023

RMB

US$

(in thousands, except for per share data)

 40,115  
 47,911  
 88,026  
 (46,432) 

 (249,665) 
 28,102  
 (221,563) 
 (27,237) 

 16,814  
 10,830  
 27,644  
 —  

 (1,212,958) 
 (899,943) 

 —

 (2,071,307) 
 21,333  
 —  
 83,162  
 (367,883) 
 (2,334,695) 
 3,154  
 (2,331,541) 
 (2,331,541) 

 (904,901) 
 (815,766) 

 —

 (1,969,467) 
 26,908  
 (9) 
 (126,587) 
 (437,465) 
 (2,506,620) 
 (697) 
 (2,507,317) 
 (2,507,317) 

 (810,646) 
 (453,017) 
 (162,574)
 (1,398,593) 
 51,749  
 (722) 
 (38,109) 
 (80,019) 
 (1,465,694) 
 —  
 (1,465,694) 
 (1,465,694) 

 (135,717) 
 (2,467,258) 
 (2,331,541) 

 400,304  
 (2,107,013) 
 (2,507,317) 

 84,497  
 (1,381,197) 
 (1,465,694) 

 2,368
 1,525
 3,893
 —

 (114,177)
 (63,806)
 (22,898)
 (196,988)
 7,289
 (102)
 (5,368)
 (11,270)
 (206,439)
 —
 (206,439)
 (206,439)

 11,901
 (194,538)
 (206,439)

 174,707,055  
 174,707,055  

 189,787,292  
 189,787,292  

 191,423,850  
 191,423,850  

 191,423,850
 191,423,850

 (13.35) 
 (13.35) 

 (30.71) 
 (30.71) 

 (13.21) 
 (13.21) 

 (30.38) 
 (30.38) 

 (7.66) 
 (7.66) 

 (17.62) 
 (17.62) 

 (1.08)
 (1.08)

 (2.48)
 (2.48)

    
    
    
    
 
   
   
   
  
 
   
   
   
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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(1) Share-based compensation expenses were allocated as follows:

2021
RMB

For the Year Ended December 31,
2023

2022
RMB

RMB

US$

Research and development expenses
Administrative expenses
Equity in loss of affiliates
Total

Year Ended December 31, 2023 Compared to Year Ended December 31, 2022

Revenues

(in thousands)

 201,926  
 406,683  
 13,267  
 621,876  

 117,876  
 239,272  
 13,852  
 371,000  

 66,758  
 126,244  
 4,815  
 197,817  

 9,403
 17,781
 678
 27,862

Total  net  revenues  for  the  year  ended  December  31,  2023  were  RMB27.6  million  (US$3.9  million),  compared  with  RMB-221.6
million  for  the  year  ended  December  31,  2022.  Total  net  revenues  for  the  year  ended  December  31,  2023  consisted  of  revenues
recognized  in  connection  with  the  strategic  collaboration  with  AbbVie  and  revenues  generated  from  the  supply  of  investigational
products  to  AbbVie  and  Human  Immunology  Biosciences,  Inc.  The  negative  figure  for  net  revenue  for  the  year  ended  December  31,
2022 was primarily due to a one-time, non-cash accounting adjustment of US$-48.0 million (equivalent to RMB-314.2 million) recorded
in the second half of 2022 following the amendment to the original license and collaboration agreement with AbbVie in August 2022.
This amendment led to a reduced probability of achieving a key milestone that was included in the consideration of revenue recognition
in prior years.

Research and Development Expenses

The following table sets forth a breakdown of the major components of our research and development expenses in absolute amounts

and as a percentage of our total research and development expenses for the periods indicated:

2022

For the Year Ended December 31,
2023
US$

     RMB      %      RMB

CRO service fees
In-licensed patent right fees
Employee benefit expenses
Material costs for drug candidates
Other expenses
Total

 523,559  
 3,316  
 324,363  
 20,857  
 32,806  
 904,901  

(in thousands, except for percentages)
 73,148  
 519,345  
 209  
 1,485  
 34,059  
 241,814  
 1,961  
 13,926  
 4,800  
 34,076  
 114,177  
 810,646  

 57.9  
 0.4  
 35.8  
 2.3  
 3.6  
 100.0  

%

 64.1
 0.2
 29.8
 1.7
 4.2
 100.0

Our  research  and  development  expenses  decreased  by  10.4%  from  RMB904.9  million  for  the  year  ended  December  31,  2022  to
RMB810.6  million  (US$114.2  million)  for  the  year  ended  December  31,  2023,  primarily  due  to  (i)  a  decrease  in  employee  benefit
expenses  of  employees  involved  in  research  and  development  from  RMB324.4  million  for  the  year  ended  December  31,  2022  to
RMB241.8  million  (US$34.1  million)  for  the  year  ended  December  31,  2023,  primarily  due  to  reduced  payroll  expenses  related  to
headcount optimization as a result of asset prioritization and reduced share-based compensation expenses; (ii) a slight decrease in service
fees for CRO and contract manufacturing organizations from RMB523.6 million for the year ended December 31, 2022 to RMB519.3
million (US$73.1 million) for the year ended December 31, 2023; (iii) a decrease in material costs for drug candidates from RMB20.9
million for the year ended December 31, 2022 to RMB13.9 million (US$2.0 million) for the year ended December 31, 2023; and (iv) a
slight increase in other expenses from RMB32.8 million for the year ended December 31, 2022 to RMB34.1 million (US$4.8 million) for
the year ended December 31, 2023.

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In  2023,  86.1%  and  13.9%  of  our  total  research  and  development  expenses  were  attributable  to  clinical  programs  and  preclinical
programs,  respectively,  as  compared  to  88.2%  and  11.8%  in  2022.  In  2023,  felzartamab  and  eftansomatropin  alfa  accounted  for
approximately 43.1% and 22.2% of our external research and development expenses, which primarily included payments to CROs and
contract manufacturing organizations. In 2022, felzartamab and eftansomatropin alfa accounted for approximately 23.6% and 20.6% of
our external research and development expenses, which primarily included payments to CROs and contract manufacturing organizations.
No other programs accounted for a significant portion of our research and development expenses in 2023 and 2022. Though we manage
our  external  research  and  development  expenses  by  program,  we  do  not  allocate  our  internal  research  and  development  expenses  by
program because our employees and internal resources may be engaged in projects for multiple programs at any time.

Administrative Expenses

Our  administrative  expenses  decreased  from  RMB815.8  million  for  the  year  ended  December  31,  2022  to  RMB453.0  million
(US$63.8 million) for the year ended December 31, 2023, primarily attributable to the decrease in payroll expenses by RMB36.2 million
(US$5.1  million)  related  to  decreased  headcount  as  a  result  of  resource  optimization  and  share-based  compensation  expenses  by
RMB113.1 million (US$15.9 million) for management personnel, reduced expenses for professional services, and reduced legal expenses
in relation to the disputes with Tracon Pharmaceuticals, Inc. of RMB95.5 million (US$13.5 million).

Impairment of Goodwill

We recognized an impairment of goodwill of RMB162.6 million (US$22.9 million) in 2023, primarily attributable to the termination
of a licensing and collaboration agreement with AbbVie in the fourth quarter of 2023. The goodwill impairment resulted from our annual
impairment  analysis,  and  reflects  the  continued  disconnect  between  I-Mab’s  anticipated  future  performance  and  present  uncertainty
reflected in its market valuation.

Interest Income

We recorded interest income of RMB26.9 million and RMB51.7 million (US$7.3 million) for the years ended December 31, 2022
and  2023,  respectively.  The  change  was  primarily  attributable  to  the  interest  income  derived  from  bank  deposits  and  the  increase  in
interest rate of bank deposits in U.S. dollars.

Other Income (Expenses), Net

We recorded other expenses of RMB126.6 million and RMB38.1 million (US$5.4 million) for the years ended December 31, 2022
and  2023,  respectively.  The  change  was  primarily  attributable  to  unrealized  exchange  losses  due  to  the  significant  fluctuation  in  the
exchange rate of the Renminbi against the U.S. dollar in 2023.

Equity in Loss of Affiliates

We recorded equity in loss of affiliates of RMB437.5 million and RMB80.0 million (US$11.3 million) for the years ended December

31, 2022 and 2023, respectively. The change was mainly recognized in relation to the operating loss of our investee, I-Mab Hangzhou.

Year Ended December 31, 2022 Compared to Year Ended December 31, 2021

Revenues

Total net revenues for the year ended December 31, 2022 were RMB-221.6 million, compared with RMB88.0 million for the year
ended  December  31,  2021.  The  decrease  in  2022  net  revenue  was  primarily  due  to  a  non-cash  adjustment  of  US$-48.0  million
(equivalent  to  RMB-314.2  million)  recorded  in  the  second  half  of  2022  following  the  amendment  to  the  original  license  and
collaboration agreement with AbbVie in August 2022. This amendment led to a lowered probability of achieving a key milestone that
was included in the total consideration of revenue recognition in prior years. The decrease was partially offset by revenue of RMB92.6
million from license and collaboration arrangements and the supply of investigational products.

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Research and Development Expenses

The following table sets forth a breakdown of the major components of our research and development expenses in absolute amounts

and as a percentage of our total research and development expenses for the periods indicated:

CRO service fees
In-licensed patent right fees
Employee benefit expenses
Material costs for drug candidates
Other expenses
Total

For the Year Ended December 31,
2022
2021

RMB

%

RMB

%

(in thousands, except for percentages)

 727,573  
 66,344  
 347,571  
 23,141  
 48,329  
 1,212,958  

 60.0  
 5.5  
 28.7  
 1.9  
 3.9  
 100.0  

 523,559  
 3,316  
 324,363  
 20,857  
 32,806  
 904,901  

 57.9
 0.4
 35.8
 2.3
 3.6
 100.0

Our research and development expenses decreased by 25.4% from RMB1,213.0 million for the year ended December 31, 2021 to
RMB904.9 million for the year ended December 31, 2022, primarily attributable to (i) a decrease in service fees for CRO and contract
manufacturing organizations from RMB727.6 million for the year ended December 31, 2021 to RMB523.6 million for the year ended
December  31,  2022,  primarily  due  to  the  reduced  demand  for  investigational  products  as  we  procured  sufficient  stock  in  2021;  (ii)  a
decrease in in-licensed patent right fees from RMB66.3 million for the year ended December 31, 2021 to RMB3.3 million for the year
ended December 31, 2022; and (iii) a slight decrease in employee benefit expenses of employees involved in research and development
from RMB347.6 million for the year ended December 31, 2021 to RMB324.4 million for the year ended December 31, 2022.

In  2022,  88.2%  and  11.8%  of  our  total  research  and  development  expenses  were  attributable  to  clinical  programs  and  preclinical
programs,  respectively,  as  compared  to  94.3%  and  5.7%  in  2021.  In  2022,  felzartamab  and  eftansomatropin  alfa  accounted  for
approximately 23.6% and 20.6% of our external research and development expenses, which primarily included payments to CROs and
contract  manufacturing  organizations.  In  2021,  felzartamab  and  lemzoparlimab  accounted  for  approximately  26.4%  and  34.8%  of  our
external research and development expenses, which primarily included licensing fees and payments to CROs and contract manufacturing
organizations.  No  other  programs  accounted  for  a  significant  portion  of  our  research  and  development  expenses  in  2022  and  2021.
Though  we  manage  our  external  research  and  development  expenses  by  program,  we  do  not  allocate  our  internal  research  and
development expenses by program because our employees and internal resources may be engaged in projects for multiple programs at
any time.

Administrative Expenses

Our administrative expenses decreased from RMB899.9 million for the year ended December 31, 2021 to RMB815.8 million for the
year ended December 31, 2022, primarily attributable to the decrease in share-based compensation expenses by RMB167.4 million in
relation to the management personnel and optimized control of operating and administrative expenses, and partially offset by the increase
of the accrued expenses in relation to the disputes with Tracon of RMB95.5 million.

Interest Income

We  recorded  interest  income  of  RMB21.3  million  and  RMB26.9  million  for  the  years  ended  December  31,  2021  and  2022,

respectively. The change was primarily attributable to the interest income derived from bank deposits and a decrease in bank balance.

Other Income (Expenses), Net

We recorded other income of RMB83.2 million and other expenses of RMB126.6 million for the years ended December 31, 2021
and  2022,  respectively.  The  change  was  primarily  attributable  to  unrealized  exchange  losses  due  to  the  significant  fluctuation  in  the
exchange rate of RMB against USD in 2022 and the fair value change of short-term and other investments.

Equity in Loss of Affiliates

We recorded equity in loss of affiliates of RMB367.9 million and RMB437.5 million for the years ended December 31, 2021 and

2022, respectively. The change was primarily due to the increased expenditure of our investee, I-Mab Hangzhou.

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Critical Accounting Policies and Significant Judgments and Estimates

Our reported results are impacted by the application of certain accounting policies that require us to make subjective or complex
judgments. These judgments involve estimations of the effect of matters that are inherently uncertain and may significantly impact our
quarterly  or  annual  results  of  operations  or  financial  condition.  Changes  in  the  estimates  and  judgments  could  significantly  affect  our
results of operations, financial condition and cash flows in future years. A description of what we consider to be our most significant
critical accounting policies and estimates follows.

Goodwill

Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are
not  individually  identified  and  separately  recognized.  We  allocate  the  cost  of  an  acquired  entity  to  the  assets  acquired  and  liabilities
assumed based on their estimated fair values at the date of acquisition. The excess of the purchase price for acquisitions over the fair
value of the net assets acquired, including other intangible assets, is recorded as goodwill. Goodwill is not amortized, but impairment of
goodwill  is  tested  on  at  least  an  annual  basis  or  whenever  events  or  changes  in  circumstances  indicate  that  the  carrying  value  of  the
reporting unit exceeds its fair value.

We first assess qualitative factors to determine whether it is more likely than not that the fair value of our reporting unit is less than
its  carrying  amount,  including  goodwill.  The  qualitative  assessment  includes  our  evaluation  of  relevant  events  and  circumstances
affecting  our  single  reporting  unit,  including  macroeconomic,  industry,  market  conditions  and  our  overall  financial  performance.  If
qualitative factors indicate that it is more likely than not that our reporting unit’s fair value is less than its carrying amount, then we will
perform the quantitative impairment test by comparing the reporting unit’s carrying amount, including goodwill, to its fair value. If the
carrying amount of the reporting unit exceeds its fair value, an impairment loss will be recognized in an amount equal to that excess.

We  applied  significant  judgement  in  developing  the  fair  value  of  our  single  reporting  unit.  Fair  value  of  the  reporting  unit  is
estimated by us using a discounted cash flow model which requires us to make judgements and assumptions related to future revenues,
discount  rate  and  terminal  growth  rate.  The  probabilities  of  the  success  of  the  clinical  trials  based  on  the  status  of  these  trials  and
reference  to  the  industry  benchmark  were  also  incorporated  into  the  assumption  of  future  revenues.  Impairment  of  goodwill  of
RMB162.6 million (US$22.9 million) was recognized for the year ended December 31, 2023.

Revenue Recognition

We adopted Accounting Standard Codification 606, Revenue from Contracts with Customers (Topic 606), or the ASC 606, for all
periods presented. Consistent with the criteria of Topic 606, we recognize revenue to depict the transfer of promised goods or services to
customers in an amount that reflects the consideration to which the entity expects to receive in exchange for those goods or services.

Under ASC 606, an entity recognizes revenue when its customer obtains control of promised goods or services, in an amount that
reflects the consideration that the entity expects to receive in exchange for those goods or services. The entity performs the following
five steps to account for the arrangements that an entity determines are within the scope of ASC 606: (i) identify the contract(s) with a
customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price, including variable consideration,
if any; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity
satisfies a performance obligation.

Once a contract is determined to be within the scope of ASC 606 at contract inception, we evaluate the contract to determine which
performance obligations it must deliver and which of these performance obligations are distinct. We recognize as revenue the amount of
the transaction price that is allocated to each performance obligation when that performance obligation is satisfied or as it is satisfied.

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Variable consideration in collaboration revenue arrangements

If the consideration promised in a contract includes a variable amount, we will estimate the amount of consideration to which we
will be entitled in exchange for transferring the promised goods or services to a customer. An amount of consideration can vary because
of  discounts,  rebates,  refunds,  credits,  price  concessions,  incentives,  performance  bonuses,  penalties,  or  other  similar  items.  The
promised consideration also can vary if an entity’s entitlement to the consideration is contingent on the occurrence or nonoccurrence of a
future event. We estimate an amount of variable consideration by using either of the following methods, depending on which method we
expect to better predict the amount of consideration to which it will be entitled:

a. The  expected  value—The  expected  value  is  the  sum  of  probability-weighted  amounts  in  a  range  of  possible  consideration
amounts.  An  expected  value  may  be  an  appropriate  estimate  of  the  amount  of  variable  consideration  if  an  entity  has  a  large
number of contracts with similar characteristics.

b. The most likely amount—The most likely amount is the single most likely amount in a range of possible consideration amounts
(that is, the single most likely outcome of the contract). The most likely amount may be an appropriate estimate of the amount
of variable consideration if the contract has only two possible outcomes (for example, an entity either achieves a performance
bonus or does not).

We include in the transaction price some or all of an amount of variable consideration estimated in accordance with above only to
the  extent  that  it  is  probable  that  a  significant  reversal  in  the  amount  of  cumulative  revenue  recognized  will  not  occur  when  the
uncertainty associated with the variable consideration is subsequently resolved.

Determination of the standalone selling price of each performance obligation

Our collaborative arrangements may contain more than one unit of account, or performance obligation, including grants of licenses
to  intellectual  property  rights,  agreement  to  provide  research  and  development  services  and  other  deliverables.  The  collaborative
arrangements do not include a right of return for any deliverable. As part of the accounting for these arrangements, we must develop
assumptions that require judgment to determine the standalone selling price for each performance obligation identified in the contract. In
developing the stand-alone selling price for a performance obligation, we consider competitor pricing for a similar or identical product,
market  awareness  of  and  perception  of  the  product,  expected  product  life  and  current  market  trends.  In  general,  the  consideration
allocated  to  each  performance  obligation  is  recognized  when  the  respective  obligation  is  satisfied  either  by  delivering  a  good  or
providing a service, limited to the consideration that is not constrained.

Cost-to-cost measure of progress for over time performance obligations

Under  our  certain  licensing  and  collaboration  arrangement  entered  into  with  a  business  partner,  we  recognized  revenue  using  the
cost-to-cost  measure  of  progress  for  its  over  time  performance  obligations  as  we  believe  this  recognition  best  depicts  the  transfer  of
benefits to its business partner as costs are incurred under the licensing and collaboration arrangement. Under the cost-to-cost measure of
progress method, the extent of progress towards completion is measured based on the ratio of costs incurred to-date to the total estimated
costs  for  completion  of  the  performance  obligations.  We  applied  significant  judgment  in  estimating  the  total  estimated  costs  for
completion of performance obligations under such licensing and collaboration arrangement.

See Note 14 “Licensing and Collaboration Arrangements” of our consolidated financial statements included elsewhere in this annual

report for a further discussion of our licensing and collaboration revenues.

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Fair value measurement of put right liabilities

Put right written by us to third party investors in our affiliate was recorded as a freestanding equity-linked instrument and classified
as a put right liability. We determined the fair value of the put right with the assistance of an independent third-party valuation firm. We
used  the  option  pricing  model  (finnerty  model)  to  estimate  the  fair  value  of  the  put  right.  The  model  requires  the  input  of  key
assumptions including the expected terms, estimated volatility, spot price and probability of triggering event for redemption option. The
significant unobservable inputs used in the option pricing model included spot price, estimated volatility and probability of triggering
event for redemption option. Expected terms is estimated based on the timing of a hypothetical redemption event which is assumed to be
the earlier of expected redemption date or expected public offering date. Expected volatility is estimated based on daily stock prices of
the  comparable  companies  for  a  period  with  length  commensurate  to  the  expected  terms  of  redemption  event.  The  spot  price  was
determined  using  the  income  approach  with  assistance  from  an  independent  third-party  valuation  firm.  The  significant  unobservable
inputs used in the income approach include revenue growth rates and discount rates.

Research and Development Expenses

Elements of research and development expenses primarily include (1) payroll and other related expenses of personnel engaged in
research and development activities, (2) in-licensed patent rights fee of exclusive development rights of drugs granted to us, (3) expenses
related  to  preclinical  testing  of  our  technologies  under  development  and  clinical  trials  such  as  payments  to  CRO,  investigators  and
clinical trial sites that conduct the clinical studies, (4) expenses to develop the product candidates, including raw materials and supplies,
product testing, depreciation, and facility related expenses, and (5) other research and development expenses. Research and development
expenses are charged to expenses as incurred when these expenditures are used for our research and development activities and have no
alternative future uses.

We  applied  significant  judgment  in  estimating  the  progress  of  our  research  and  development  activities  and  completion  of  or
likelihood of achieving milestone events per underlying agreements when estimating the research and development costs to be accrued at
each  reporting  period  end.  The  process  of  estimating  our  research  and  development  expenses  involves  reviewing  open  contracts  and
purchase orders, communicating with personnel to identify services that have been performed on our behalf and estimating the level of
service  performed  and  the  associated  costs  incurred  for  the  services  when  we  have  not  yet  been  invoiced  or  otherwise  notified  of  the
actual costs.

Recent Accounting Pronouncements

A list of recently issued accounting pronouncements that are relevant to us is included in Note 2 “Principal Accounting Policies—

2.27 Recent Accounting Pronouncements” of our consolidated financial statements included elsewhere in this annual report.

B. Liquidity and Capital Resources

Cash Flows and Working Capital

We have incurred net losses and negative cash flows from our operations for the years ended December 31, 2021, 2022 and 2023.
Substantially all of our losses have resulted from funding our research and development programs and administrative costs associated
with our operations. We incurred net losses of RMB2,331.5 million, RMB2,507.3 million and RMB1,465.7 million (US$206.4 million)
for the year ended December 31, 2021, 2022 and 2023, respectively. Our primary use of cash is to fund our research and development
activities.  We  used  RMB973.1  million,  RMB1,102.8  million  and  RMB1,305.0  million  (US$183.8  million)  in  cash  for  our  operating
activities  for  the  year  ended  December  31,  2021,  2022  and  2023,  respectively.  As  of  December  31,  2023,  we  had  cash  and  cash
equivalents  of  RMB2,141.4  million  (US$301.6  million).  Our  cash,  cash  equivalents  and  restricted  cash  consist  primarily  of  cash  in
multiple banks and on hand. Historically, we have financed our operations principally through proceeds from the issuance and sale of
preferred  shares  and  convertible  promissory  notes  in  private  placement  transactions,  and  we  also  received  total  net  proceeds  of
approximately US$105.3 million from our initial public offering. In September 2020, we entered into definitive subscription agreements
with a consortium of institutional investors to raise approximately US$418 million through a private placement. The private placement
consists of (i) the sale to the institutional investors of approximately US$418 million of our 29,133,502 ordinary shares (equivalent to
12,666,740  ADSs)  at  a  purchase  price  equivalent  to  US$33  per  ADS;  and  (ii)  warrants  to  subscribe  for  an  aggregate  of  5,341,267
ordinary shares (equivalent to 2,322,290 ADSs) at an exercise price equivalent to US$45 per ADS, which were fully exercised in 2021
and increased the proceeds by approximately US$104.5 million.

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The following table sets forth a summary of our cash flows for the periods presented:

For the Year Ended December 31,

2021
RMB

2022
RMB

2023

RMB

US$

(in thousands)

Summary Consolidated Statements of Cash Flow Data:
Net cash (used in)/generated from operating activities
Net cash (used in)/generated from investing activities
Net cash generated from financing activities
Effect of exchange rate changes on cash and cash equivalents and restricted cash  
Net (decrease)/increase in cash, cash equivalents and restricted cash
Cash, cash equivalents and restricted cash, beginning of the year
Cash, cash equivalents and restricted cash, end of the year

 (973,093) 
 (727,206) 
 593,924  
 (128,771) 
 (1,235,146) 
 4,758,778  
 3,523,632  

 (1,102,805) 
 458,382  
 42,357  
 389,203  
 (212,863) 
 3,523,632  
 3,310,769  

 (1,304,950) 
 102,515  
 7,572  
 84,452  
 (1,110,411) 
 3,310,769  
 2,200,358  

 (183,798)
 14,439
 1,066
 11,896
 (156,397)
 466,311
 309,914

We  do  not  expect  to  generate  any  revenue  from  the  sales  of  our  products  unless  and  until  we  obtain  regulatory  approval  of  and
commercialize one of our current or future drug candidates. We anticipate that we will continue to generate losses for the foreseeable
future, and we expect the losses to increase as we continue the development of, and seek regulatory approvals for, our drug candidates
and begin to commercialize any approved products. In addition, subject to obtaining regulatory approval of any of our drug candidates,
we expect to incur significant commercialization expenses for product sales, marketing and manufacturing. Accordingly, we anticipate
that we will need substantial additional funding in connection with our continuing operations.

Based on our current operating plan, we believe that our current cash and cash equivalents will be sufficient to meet our current and
anticipated working capital requirements and capital expenditures for at least the next 12 months. During this period, we expect that our
expenses  will  decrease  following  the  divestiture  of  the  Greater  China  assets  and  business  operations,  due  to  a  streamlined  operating
model  with  less  employees  and  a  more  focused  pipeline  strategy.  We  have  based  our  estimates  on  assumptions  that  may  prove  to  be
wrong, and we may use our available capital resources sooner than we currently expect. Because of the numerous risks and uncertainties
associated  with  the  development  and  commercialization  of  our  drug  candidates,  we  are  unable  to  estimate  the  amounts  of  increased
capital outlays and operating expenditures necessary to complete the development and commercialization of our drug candidates.

We  may  decide  to  enhance  our  liquidity  position  or  increase  our  cash  reserve  for  future  operations  and  investments  through
additional financing. The issuance and sale of additional equity would result in further dilution to our shareholders and ADS holders, and
the  terms  of  these  securities  may  include  liquidation  or  other  preferences  that  adversely  affect  your  rights  as  an  ADS  holder.  The
incurrence  of  indebtedness  would  result  in  increased  fixed  obligations  and  could  result  in  operating  covenants  that  would  restrict  our
operations,  which  could  potentially  dilute  your  interest.  If  we  raise  additional  funds  through  collaborations,  strategic  alliances  or
licensing  arrangements  with  third  parties,  we  may  have  to  relinquish  valuable  rights  to  our  technologies,  future  revenue  streams  or
research programs or to grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity
or  debt  financings  when  needed,  we  may  be  required  to  delay,  limit,  reduce  or  terminate  our  product  development  or  future
commercialization efforts or grant rights to develop and market products or drug candidates that we would otherwise prefer to develop
and market ourselves.

As of December 31, 2023, 6.3% of our cash and cash equivalents were denominated in RMB and held in China. We expect that the
majority of our cash and cash equivalents will be denominated in U.S. dollars and held in the U.S. in the near future. We also expect that
the majority of our future revenues and additional fund raising will be denominated in U.S. dollars to support our future working capital
requirements and capital expenditures outside of China. However, some events that are beyond our control may materially and adversely
affect our ability to raise additional capital in future and our liquidity. See “Item 3. Key Information—D. Risk Factors—Risks Related to
Our Industry, Business and Operations—Our business and results of operations could be adversely affected by public health crisis and
natural catastrophes or other disasters outside of our control in the locations in which we, our suppliers, CROs, contract manufacturing
organizations and other contractors operate.”

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Operating Activities

Net cash used in operating activities for the year ended December 31, 2023 was RMB1,305.0 million (US$183.8 million). Our net
loss  was  RMB1,465.7  million  (US$206.4  million)  for  the  same  period.  The  difference  between  our  net  loss  and  our  net  cash  used  in
operating  activities  was  primarily  attributable  to  certain  non-cash  expenses,  including  equity  in  loss  of  affiliates  of  RMB80.0  million
(US$11.3  million),  impairment  of  goodwill  of  RMB162.6  million  (US$22.9  million)  and  share-based  compensation  of  RMB193.0
million  (US$27.2  million),  and  changes  in  certain  working  capital  items,  including  a  decrease  in  accruals  and  other  payables  of
RMB342.7  million  (US$48.3  million)  and  a  decrease  of  lease  liabilities  of  RMB22.1  million  (US$3.1  million),  partially  offset  by  a
decrease in prepayments and other receivables of RMB35.9 million (US$5.1 million) and an increase in contract liabilities of RMB17.8
million (US$2.5 million). The change in share-based compensation was attributable to the grant of stock options to certain directors and
employees of our company under our share incentive plans.

Net cash used in operating activities for the year ended December 31, 2022 was RMB1,102.8 million. Our net loss was RMB2,507.3
million for the same period. The difference between our net loss and our net cash used in operating activities was primarily attributable to
certain  non-cash  expenses,  including  equity  in  loss  of  affiliates  of  RMB437.5  million  and  share-based  compensation  of  RMB357.1
million,  and  changes  in  certain  working  capital  items,  including  a  decrease  of  a  contract  assets  of  RMB253.8  million,  an  increase  in
accruals  and  other  payables  of  RMB109.9  million,  a  decrease  in  prepayments  and  other  receivables  of  RMB109.2  million,  and  an
increase in contract liabilities of RMB52.6 million, partially offset by a decrease of lease liabilities of RMB35.7 million. The change in
share-based compensation was attributable to the grant of stock options to certain directors and employees of our company under our
share incentive plans.

Net cash used in operating activities for the year ended December 31, 2021 was RMB973.1 million. Our net loss was RMB2,331.5
million for the same period. The difference between our net loss and our net cash used in operating activities was primarily attributable to
certain  non-cash  expenses,  including  share-based  compensation  of  RMB608.6  million  and  equity  in  loss  of  affiliates  of  RMB367.9
million,  and  changes  in  certain  working  capital  items,  including  an  increase  in  the  contract  liabilities  of  RMB224.0  million  and  an
increase in accruals and other payables of RMB152.1 million, partially offset by an increase of inventories of RMB27.2 million and an
increase of contract assets of RMB26.4 million. The change in share-based compensation was attributable to the grant of stock options to
certain directors and employees of our company under our share incentive plans.

Investing Activities

Net cash generated from investing activities for the year ended December 31, 2023 was RMB102.5 million (US$14.4 million). The
net cash increase was primarily attributable to RMB1,005.2 million (US$141.6 million) of the proceeds from disposal of short-term and
other  investments,  partially  offset  by  RMB885.6  million  (US$124.7  million)  of  the  cash  used  in  the  purchase  of  short-term  and  other
investments.

Net cash generated from investing activities for the year ended December 31, 2022 was RMB458.4 million. The net cash increase
was primarily attributable to RMB7,911.5 million of the proceeds from disposal of short-term and other investments, partially offset by
RMB7,407.3 million of the cash used in the purchase of short-term and other investments.

Net  cash  used  in  investing  activities  for  the  year  ended  December  31,  2021  was  RMB727.2  million.  The  net  cash  decrease  was
primarily  attributable  to  RMB10,173.3  million  of  purchase  of  short-term  investments,  partially  offset  by  RMB9,482.0  million  of
proceeds from disposal of short-term investments.

Financing Activities

Net cash generated from financing activities for the year ended December 31, 2023 was RMB7.5 million (US$1.1 million), primarily
attributable to the proceeds from bank borrowings of RMB118.9 million (US$16.7 million), partially offset by the repayment of bank
borrowings  of  RMB48.9  million  (US$6.9  million)  and  RMB61.3  million  (US$8.6  million)  of  the  cash  used  in  the  payment  of  stock
repurchase.

Net cash generated from financing activities for the year ended December 31, 2022 was RMB42.4 million, primarily attributable to
the proceeds from exercise of stock options of RMB44.7 million and the proceeds from bank borrowings of RMB19.0 million, partially
offset by RMB21.2 million of the cash used in the payment of stock repurchase.

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Net cash generated from financing activities for the year ended December 31, 2021 was RMB593.9 million, primarily attributable to
the  proceeds  from  exercise  of  warrants  of  RMB672.7  million,  partially  offset  by  payments  of  the  issuance  cost  in  relation  to  private
placement of RMB128.8 million.

Material Cash Requirements

Contractual Obligation

Our material cash requirements as of December 31, 2023 and any subsequent interim period primarily include our operating lease

obligations, purchase obligations and other commitments.

Our capital expenditures were incurred for purposes of purchasing property, equipment and software. Our capital expenditures were
RMB29.9  million.  RMB45.8  million  and  RMB11.4  million  (US$1.6  million)  in  the  years  ended  December  31,  2021,  2022  and  2023,
respectively.

The following table sets forth our contractual obligations as of December 31, 2023:

Total

Less Than 
1 Year

1-3 
Years

3-5 
Years

More Than 
5 Years

     RMB      US$      RMB

US$      RMB      US$      RMB      US$      RMB      US$

(in thousands)

Operating lease commitments
Purchase obligations
Other commitments

 50,003  

—
—

 7,042  
—
—

 22,949    3,232  

 12,580  

—
—

—
—

—
—

 1,771  
—
—

 9,649  
—
—

 1,359  
—
—

 4,825  
—
—

 680
—
—

Our operating lease commitments relate to leases for our office premises and lab space pursuant to non-cancellable operating lease
agreements.  Other  than  as  shown  above,  we  did  not  have  any  significant  capital  and  other  commitments,  long-term  obligations  or
guarantees as of December 31, 2023.

We  entered  into  certain  unconditional  purchase  obligations  and  other  commitments  in  the  normal  course  of  business.  There  have
been no changes to these commitments that would have a material impact on our ability to meet either short-term or long-term future
cash requirements.

We have not entered into any financial guarantees or other commitments to guarantee the payment obligations of any third parties. In
addition, we have not entered into any derivative contracts that are indexed to our shares and classified as shareholder’s equity or that are
not  reflected  in  our  consolidated  financial  statements.  Furthermore,  we  do  not  have  any  retained  or  contingent  interest  in  assets
transferred to an unconsolidated entity that serves as credit, liquidity or market risk support to such entity. We do not have any variable
interest in any unconsolidated entity that provides financing, liquidity, market risk or credit support to us or engages in leasing, hedging
or product development services with us.

Other than as discussed above, we did not have any significant capital and other commitments, long-term obligations or guarantees
as of December 31, 2023. We have a contingent obligation to repurchase the equity held by certain investors in the period beyond 12
months. For a detailed description of this contingent obligation, see “Item 4. Information on the Company—A. History and Development
of the Company.”

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Collaborations, Licensing and Other Arrangements

We  entered  into  collaborative,  licensing,  and  other  arrangements  with  third  parties  that  may  require  future  milestone  payments  to
third  parties  contingent  upon  the  achievement  of  certain  development,  regulatory,  or  commercial  milestones.  Individually,  these
arrangements  are  insignificant  in  any  one  annual  reporting  period.  However,  if  milestones  for  multiple  products  covered  by  these
arrangements would happen to be reached in the same reporting period, the aggregate charge to expense could be material to the results
of operations in that period. From a business perspective, the payments are viewed as positive because they signify that the product is
successfully moving through development and is now generating or is more likely to generate future cash flows from product sales. It is
not possible to predict with reasonable certainty whether these milestones will be achieved or the timing for achievement. See Note 14
“Licensing  and  Collaboration  Arrangements”  of  our  consolidated  financial  statements  included  elsewhere  in  this  annual  report  for
additional information on these collaboration arrangements.

Holding Company Structure

We are a holding company with no material operations of its own. Following the divestiture of the Greater China assets and business
operations,  we  currently  conduct  our  operations  primarily  through  our  subsidiary  in  the  United  States  and  only  a  small  portion  of
business operations in China through our PRC subsidiary. As a result, our ability to pay dividends depends upon dividends paid by our
U.S. and PRC subsidiaries. In the event that we may rely on dividends paid by our PRC subsidiary, there are certain limitations imposed
by debt instruments or PRC laws, rules and regulations. For details, see “Item 4. Information on the Company—B. Business Overview—
Regulation—PRC Regulation—Regulations Relating to Foreign Exchange and the Dividend Distribution” and “Item 3. Key information
—D. Risk Factors—General Risks Related to Our ADSs—Because we do not expect to pay dividends in the foreseeable future, you must
rely on price appreciation of our ADSs for return on your investment.”

C. Research and Development, Patents and Licenses, Etc.

Sec “Item 4. Information on the Company—B. Business Overview—Intellectual Property.”

D. Trend Information

Other  than  as  disclosed  elsewhere  in  this  annual  report,  we  are  not  aware  of  any  trends,  uncertainties,  demands,  commitments  or
events  for  the  period  since  January  1,  2024  that  are  reasonably  likely  to  have  a  material  adverse  effect  on  our  net  revenues,  income,
profitability,  liquidity  or  capital  resources,  or  that  caused  the  disclosed  financial  information  to  be  not  necessarily  indicative  of  future
operating results or financial conditions.

E. Critical Accounting Estimates

For our critical accounting estimates, see “Item 5. Operating and Financial Review and Prospects—A. Operating Results—Critical

Accounting Policies and Significant Judgments and Estimates.”

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ITEM 6.

DIRECTORS, SENIOR MANAGEMENT AND EMPLOYEES

A. Directors and Senior Management.

The following table sets forth information regarding our directors and executive officers as of the date of this annual report.

DIRECTORS AND EXECUTIVE OFFICERS
Raj Kannan
Wei Fu
Shuai Chen
Chun Kwok Alan Au
Conor Chia-hung Yang
Pamela M. Klein, M.D.

Ruyi He, M.D.
Rong Shao, Ph.D.
Joseph Skelton

     AGE

POSITION/TITLE

60
42
50
51
61

62
63
61
33

Director and Chief Executive Officer
Director
Director
Independent Director
Independent Director
Independent Director and interim Chairperson of the Board of
Directors
Independent Director
Independent Director
Chief Financial Officer

Raj  Kannan  has  served  as  our  director  and  chief  executive  officer  since  June  2023.  Mr.  Kannan  has  over  30  years  of  industry
experience  in  creating  and  developing  global  specialty  medicine  franchises.  He  has  effectively  led  and  grown  organizations  and
supported multiple successful launches across therapeutic areas in the U.S. and globally. Mr. Kannan currently serves as an independent
director of Valinor Pharma, LLC. Prior to joining us, he served as the chief executive officer and director of Aerie Pharmaceuticals from
December 2021 to November 2022 and led the successful merger of Aerie Pharmaceuticals to Alcon, Inc. where the all-cash transaction
was consummated in mid-November 2022. Prior to joining Aerie Pharmaceuticals, Mr. Kannan was the chief executive officer and the
president of Chiasma, Inc., where he led the organization through the approval and the launch of the first oral therapy in over a decade
for  patients  with  acromegaly  and  subsequently  through  the  acquisition  by  Amryt  Pharma  Plc.  After  that,  he  served  as  an  independent
director of Amryt Pharmaceuticals from August 2021 to April 2023 when it was acquired by Chiesi. From July 2018 to June 2019, Mr.
Kannan served as the chief commercial officer at Kiniksa Pharmaceuticals, where he built the commercial operations, including sales,
marketing  and  business  analytics  functions,  and  from  June  2014  to  May  2018,  he  served  as  the  global  head  of  the  Neurology  and
Immunology business franchise at Merck KGaA, where he led and revitalized the largest franchise through significant strategic shifts and
recalibration of pipeline investments, turning it into a high-growth business generating $2 billion in annual revenues. Prior to that, Mr.
Kannan accumulated a decade of experience at Boehringer Ingelheim International GmbH in the United States, Canada, and Germany
and held various positions, including the global marketing head of the Cardiovascular Franchise. Mr. Kannan received his M.B.A. from
East  Carolina  University  in  the  United  States  in  May  1990  and  his  bachelor’s  degree  from  the  University  of  Madras  in  India  in  May
1984.

Wei Fu  has  served  as  our  director  since  June  2018.  Mr.  Fu  was  appointed  by  the  C-Bridge  entities  pursuant  to  our  shareholders
agreement dated July 6, 2018. Mr. Fu has served as the chief executive officer and a managing partner of CBC Group since April 2014.
Mr.  Fu  currently  also  serves  on  the  board  of  Everest  Medicines  Limited  (HKEX:  1952)  and  several  private  companies.  From  August
2011  to  December  2013,  Mr.  Fu  served  as  the  general  manager  of  the  investment  department  at  Far  East  Horizon  International,  a
financial services organization. Mr. Fu served as a partner and the head of the Beijing office of Themes Investment Management Ltd, a
private  equity  firm  specializing  in  healthcare  and  environmental  businesses,  from  July  2010  to  July  2011.  From  March  2008  to  April
2010, Mr. Fu worked as an associate director of the private equity department at Standard Chartered Business Consulting (Beijing) Co.,
Ltd, where he was mainly responsible for private equity investment in relation to infrastructure projects. Mr. Fu received his bachelor’s
degree in electrical engineering and business administration from Nanyang Technological University in Singapore in February 2005.

Shuai Chen,  has  served  as  our  director  since  April  2023.  Mr.  Chen  joined  Hony  Capital  in  2003  and  is  currently  a  partner  and
managing director of Hony Capital and managing director of Hony private equity investment fund. Mr. Chen is also a member of the
investment  committee  of  Hony  real  estate  investment  fund.  Mr.  Chen  has  extensive  experience  in  investment  management,  supplier
management and retail business. Currently, Mr. Chen also serves as a non-executive director of Century Ginwa Retail Holdings Limited
(HKEX:  0162)  and  an  executive  director,  chairman  of  the  board  and  acting  chief  executive  officer  of  Hospital  Corporation  of  China
Limited  (HKEX:  3869).  Mr.  Chen  received  a  Master  of  Business  Administration  degree  from  China  Europe  International  Business
School in 2010 and a bachelor’s degree in economics from Beijing Forestry University in 1997.

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Chun Kwok Alan Au has served as our director since January 2020. Mr. Au is the founder of GT Healthcare, a private equity fund
focusing on cross border healthcare investments, and has served as the managing partner of GT Healthcare since September 2015. Mr.
Au has served as a member of the board, and the chairman of the audit committee of CSPC Pharmaceutical Group (HKEX: 1093), a
leading  pharmaceutical  group  in  China,  since  January  2021.  Mr.  Au  also  has  served  as  a  panel  member  for  the  Entrepreneur  Support
Scheme (ESS Program) of the Innovation and Technology Fund of the Hong Kong SAR Government since 2014. Mr. Au was an advisor
to  Simcere  Pharmaceutical  Group,  a  leading  pharmaceutical  company  in  China  (previously  listed  on  NYSE:  SCR,  privatized  in
December 2013, when Mr. Au served as chairman of the special committee on the board of directors). Mr. Au was also a member of the
board of China Nepstar Chain Drugstore Ltd. (NYSE: NPD, privatized in September 2016) from March 2013 to August 2016. He was
also  a  member  of  the  board  of  Cellular  BioMedicine  Group  (Nasdaq:  CBMG,  privatized  in  February  2021),  a  clinical-stage
biopharmaceutical  firm  engaged  in  the  development  of  immunotherapies  for  cancer  and  stem  cell  therapies  from  November  2014  to
February 2021. Prior to these, Mr. Au served as the head of the Asia Healthcare Investment Banking of Deutsche Bank Group, advising
healthcare IPOs and M&A in the region from April 2011 to December 2012. Prior to that, Mr. Au served as the executive director at
JAFCO  Asia  Investment  Group,  responsible  for  healthcare  investments  in  China  from  2008  to  2010.  Mr.  Au  worked  at  Morningside
Group as a director in charge of healthcare investments in Asia from 2000 to 2005. Mr. Au also worked at KPMG and KPMG Corporate
Finance from 1995 to 1999. Mr. Au received his bachelor’s degree in psychology from Chinese University of Hong Kong in 1995 and his
master’s degree in management from Columbia Business School in New York in 2007. Mr. Au is a certified public accountant (CPA) in
the U.S. and a chartered financial analyst (CFA). He is a member of the Hong Kong Institute of Financial Analysts and member of the
American Institute of Certified Public Accountants.

Conor  Chia-hung  Yang  has  served  as  our  director  since  January  2020.  Mr.  Yang  has  been  the  chief  financial  officer  of  Ehang
Holdings Limited (Nasdaq: EH) since September 2023. During the period spanning 2007 to 2023, Mr. Yang held several chief financial
officer positions at different times in Tuniu Corporation (Nasdaq: TOUR), E-Commerce China Dangdang Inc., and AirMedia Group Inc.,
currently known as AirNet Technology Inc., (Nasdaq: ANTE). Prior to that, Mr. Yang was the chief executive officer of Rock Mobile
Corporation from 2004 to 2007. From 1999 to 2004, Mr. Yang was the chief financial officer of the Asia Pacific region for CellStar Asia
Corporation. Between 1992 and 1999, Mr. Yang held positions at different times in Goldman Sachs (Asia) L.L.C., Lehman Brothers Asia
Limited  and  Morgan  Stanley  Asia  Limited.  Mr.  Yang  currently  also  serves  as  an  independent  director  of  iQIYI,  Inc.  (Nasdaq:  IQ),
Tongcheng  Travel  Holdings  Limited  (HKEX:  0780),  UP  Fintech  Holding  Ltd  (Nasdaq:  TIGR)  and  Smart  Share  Global  Ltd  (Nasdaq:
EM). Mr. Yang received his master’s degree in business administration from the University of California, Los Angeles in 1992.

Pamela M. Klein, M.D., has served as our director since January 2020 and our interim chairperson of the board of directors since
February 2024. Dr. Klein currently a director of argenx SE (Nasdaq: ARGX) since April 2016, a director of Patrys Limited (ASX: PAB)
since October 2019 and a director of Frontier Medicines (private) since January 2023. She previously served as a director of Spring Bank
Pharmaceuticals (Nasdaq: SBPH); F-Star (Nasdaq: FSTR) and Jiya Acquisition Corp (Nasdaq: JYAC). In addition, Dr. Klein has served
as  the  president  at  PMK  BioResearch  since  2008,  offering  consultancy  in  Oncology  Drug  Development  to  Biotech,  Pharma  and  the
Investment Community. Dr. Klein has also served as the consulting chief medical officer at Olema Oncology since 2018. Previously, Dr.
Klein  served  as  chief  medical  officer  for  successful  biotech  start-ups  and  prior  to  that,  Vice  President,  Genentech,  Development.  Dr.
Klein received her bachelor’s degree in cell and molecular biology from California State University in 1985 and an M.D. from Stritch
School of Medicine, Loyola University Chicago in 1992 followed by an internal medicine residency at Cedars Sinai, Los Angeles. Dr.
Klein spent seven years at the National Cancer Institute of the National Institutes of Health in Bethesda, Maryland in medical oncology.

Ruyi He, M.D., has served as our director since June 2021. Dr. He is the chief medical officer of RemeGen Inc and Venture Partner
of  SDIC  Fund  Management  Co.,  the  former  Chief  Scientist  at  the  Center  for  Drug  Evaluation  at  the  National  Medical  Products
Administration of the PRC, or the NMPA. He joined the NMPA in 2016, after having worked at the FDA for almost two decades. As the
first  overseas  expert  hired  by  NMPA  as  the  Chief  Scientist,  Dr.  He  organized  and  led  many  NMPA  reforms  on  the  drug  evaluation
system. In addition to establishing guidance for drug evaluation and approvals in China, Dr. He has also introduced multiple international
policies into the NMPA, including conditional approval and acceptance of clinical data from abroad. Dr. He received his medical degree
from China Medical University. Dr. He received his bachelor’s degree and master’s degree in medical from China Medical University in
1983 and 1986, respectively, and his M.D. in Internal Medicine from Howard University in 1999. He completed his residency training in
Internal  Medicine  at  Howard  University  Hospital  in  Washington  DC  and  received  his  clinical  and  research  training  at  the  National
Institute of Diabetes and Digestive and Kidney Diseases at the National Institutes of Health in Bethesda, Maryland. Dr. He is a licensed,
board-certified physician in Internal Medicine in the United States.

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Rong Shao, Ph.D., has served as our director since June 2021. Dr. Shao is a professor of drug administration policies and regulations,
the  Executive  Deputy  Director  of  the  Research  Center  of  National  Drug  Policy  &  Ecosystem  and  the  Director  of  the  NMPA  Key
Laboratory  of  Drug  Regulatory  Innovation  and  Evaluation,  at  China  Pharmaceutical  University.  Dr.  Shao  has  been  engaged  in  the
research and education of drug policies and regulations for more than three decades and has contributed to the development of China’s
drug  regulatory  innovation  and  reform,  including  serving  as  an  expert  committee  member  for  NMPA  in  the  revision  of  Drug
Administration Law (2019). Dr. Shao is currently a board member and the committee chair in academic associations, such as the China
Pharmaceutical  Association  and  the  China  Society  for  Drug  Regulation.  She  is  also  an  editorial  board  member  of  China  Pharmacy,
Chinese  Journal  of  New  Drugs,  and  Chinese  Journal  of  Health  Policy.  Dr.  Shao  holds  a  Ph.D.  in  Pharmacy  Administration  from
Shenyang Pharmaceutical University, bachelor’s degree in Medicinal Chemistry from China Pharmaceutical University, and bachelor’s
degree in Law from Nanjing University. Dr. Shao is also a Chinese practicing lawyer.

Joseph Skelton has served as our chief financial officer since February 2024. Mr. Skelton has nearly ten years of investment banking
experience with a focus on the life sciences vertical. He has served as a senior vice president in the healthcare investment banking group
at  Truist  Securities,  covering  the  biopharma  sector  since  May  2021.  During  his  tenure  at  Truist,  he  served  on  many  of  the  franchise-
making deals of the healthcare group across both M&A advisory as well as strategic capital raising, focusing on providing strategic and
financial  advice  to  life  sciences  companies.  Prior  to  joining  Truist,  Mr.  Skelton  served  as  an  investment  banker  of  the  healthcare
investment banking group at Cantor Fitzgerald from April 2020 to May 2021, focusing on providing M&A advisory services as well as
strategic capital raising. Mr. Skelton also worked in the corporate development department at Amneal Pharmaceuticals from September
2019 to April 2020, responsible for exercising strategic initiatives of Amneal. Prior to joining Amneal, Mr. Skelton served as an associate
of the healthcare investment banking group at Cantor Fitzgerald from July 2018 to September 2019. From June 2017 to July 2018, he
served  as  an  investment  banking  analyst  and  associate  at  Janney  Montgomery  Scott.  From  July  2015  to  June  2017,  he  served  as  an
analyst at Ernst and Young. Mr. Skelton obtained his master’s degree in accounting in 2015 and his bachelor’s degree in business and
economics in 2013, both from Lehigh University.

Our Scientific Advisory Board

The members of our scientific advisory board provide scientific, portfolio and project strategy advice to us, including the evaluation

of research and development strategies. The members of our scientific advisory board receive cash compensation for their services.

Howard Weiner, M.D., has served on our scientific advisory board since July 2019. Dr. Weiner is the Robert L. Kroc Professor of
Neurology at the Harvard Medical School, Director of the Partners Multiple Sclerosis Center and Co-Director of Center for Neurologic
Diseases  at  Brigham  &  Women’s  Hospital  in  Boston.  The  Partners  Multiple  Sclerosis  Center  is  the  first  integrated  multiple  sclerosis
center  that  combines  clinical  care,  MRI  imaging  and  immune  monitoring  to  the  multiple  sclerosis  patient  as  part  of  the  2000  patient
CLIMB  cohort  study.  Dr.  Weiner  has  pioneered  immunotherapy  in  multiple  sclerosis  and  has  investigated  immune  mechanisms  in
nervous  system  diseases  including  multiple  sclerosis,  Alzheimer’s  disease,  amyotrophic  lateral  sclerosis,  stroke  and  brain  tumors.  Dr.
Weiner has also pioneered the investigation of the mucosal immune system for the treatment of autoimmune and other diseases and the
use of anti-CD3 to induce regulatory T cells for the treatment of these diseases.

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Patricia  LoRusso,  D.O.,  M.A.,  Ph.D.,  has  served  on  our  scientific  advisory  board  since  July  2019.  Dr.  LoRusso  is  currently  a
professor of medicine and a clinical scholar in medical oncology and Associate Director of Innovative Medicine at Yale Cancer Center in
New Haven, Connecticut, USA, where she is also Director of Early Therapeutics Disease-Aligned Team. Dr. LoRusso’s expertise is in
testing  new  treatments  on  patient  volunteers  with  advanced-stage  cancer.  She  heads  the  early  clinical  trials  program  at  Yale  Cancer
Center.  She  has  served  as  the  co-leader  of  the  Stand  Up  To  Cancer/Melanoma  Research  Alliance-funded  Melanoma  Dream  Team,  a
Komen  Promise  grant  co-Principal  Investigator,  and  has  been  a  Principal  Investigator  of  the  National  Cancer  Institute  Phase  1/early
phase clinical trials program grant in excess of 20 years. She is currently primary investigator or co-investigator of numerous clinical
trials.  Prior  to  joining  Yale  in  August  2014,  Dr.  LoRusso  served  in  numerous  leadership  roles  at  Wayne  State  University’s  Barbara
Karmanos Cancer Institute for more than 25 years, most recently as director of the Phase 1 Clinical Trials Program and of the Eisenberg
Center  for  Experimental  Therapeutics.  Dr.  LoRusso  also  worked  as  a  director  in  Karmanos  Cancer  Institute,  a  cancer  research  and
provider  network,  from  1997  to  2014.  Dr.  LoRusso  received  her  B.A.  degree  of  science  in  religion/religious  studies  and  biology,  her
master’s  degree  at  Yale  University,  her  D.O.  and  Ph.D.  from  Michigan  State  University,  and  completed  fellowship  training  at  Wayne
State University. Dr. LoRusso served as co-chair of the investigational drug steering committee of the National Cancer Institute Cancer
Therapy Evaluation Program, a prior parent member of the quick trials clinical subcommittee of the National Cancer Institute, and has
served as either an ad hoc or an appointed member on multiple study sections and has reviewed for Komen Promise grants, numerous
SPORE  and  P01  study  sections,  and  translational  research  grants.  She  has  served  on  the  education  and  scientific  committees  of  the
American Society of Clinical Oncology, the Scientific Committee of the American Association for Cancer Research as well as a Vice-
Chair for the 2019 AACR annual meeting. She is a member of the Board of Scientific Council of the National Cancer Institute and has
served on the Board of Directors for the American Association for Cancer Research.

Timothy Yap,  M.D.,  Ph.D.,  has  served  on  our  scientific  advisory  board  since  August  2019.  Dr.  Yap  is  a  medical  oncologist  and
physician-scientist based at the University of Texas MD Anderson Cancer Center. He is an Associate Professor in the Department for
Investigational Cancer Therapeutics (Phase I Program), and the Department of Thoracic/Head and Neck Medical Oncology. Dr. Yap is
the  Medical  Director  of  the  Institute  for  Applied  Cancer  Science,  a  drug  discovery  biopharmaceutical  unit  where  drug  discovery  and
clinical translation are seamlessly integrated. He is also the Associate Director of Translational Research in the Institute for Personalized
Cancer  Therapy,  which  is  an  integrated  research  and  clinical  trials  program  aimed  at  implementing  personalized  cancer  therapy  and
improving patient outcomes. Prior to his current position, Dr. Yap was a Consultant Medical Oncologist at The Royal Marsden Hospital
in London, UK and National Institute for Health Research BRC Clinician Scientist at The Institute of Cancer Research, London, UK. Dr.
Yap gained his BSc degree with First Class Honors in Immunology and Infectious Diseases at Imperial College London, UK, and was
awarded the Huggett Memorial Prize. His BSc laboratory research involved an immunogenetics study under the supervision of Professor
Charles Bangham. He subsequently went on to attain his Medical degree from Imperial College London, UK, before completing general
medical  training  in  Oxford.  Dr.  Yap’s  main  research  focuses  on  the  first-in-human  and  combinatorial  development  of  molecularly
targeted  agents  and  immunotherapies,  and  their  acceleration  through  clinical  studies  using  novel  predictive  and  pharmacodynamic
biomarkers. Dr. Yap leads immune-oncology clinical and associated translational studies, including novel agents targeting PD-1/PD-L1,
ICOS, IDO, LAG3, TIM3, STING, TGFbeta, adenosine A2A receptor and fucosylation. He was previously the UK Chief Investigator for
the CheckMate 331 Phase III trial in relapsed small cell lung cancer and the KEYNOTE-158 Phase II biomarker study in advanced solid
tumors and multiple novel immunotherapy combination phase I trials.

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Roy S. Herbst, M.D., Ph.D., has served on our scientific advisory board since July 2019. Dr. Roy S. Herbst is an Ensign Professor of
Medicine (Medical Oncology) and Professor of Pharmacology, the Chief of Medical Oncology at Yale Cancer Center and Smilow Cancer
Hospital,  and  an  Associate  Cancer  Center  Director  for  Translational  Research,  Yale  Cancer  Center  in  New  Haven,  CT.  Dr.  Herbst  is
nationally  recognized  for  his  leadership  and  expertise  in  lung  cancer  treatment  and  research.  He  is  best  known  for  his  work  in
developmental  therapeutics  and  the  personalized  therapy  of  non-small  cell  lung  cancer,  in  particular  the  process  of  linking  genetic
abnormalities of cancer cells to novel therapies. Prior to his appointment at Yale, Dr. Herbst was the Barnhart Distinguished Professor
and  Chief  of  the  Section  of  Thoracic  Medical  Oncology  in  the  Department  of  Thoracic/Head  and  Neck  Medical  Oncology,  at  The
University of Texas M.D. Anderson Cancer Center in Houston, Texas. He also served as Professor in the Department of Cancer Biology
and Co-Director of the Phase I Clinical Trials Program. He has led the Phase I development of several of the new generation of targeted
agents for non-small cell lung cancer, including gefitinib, erlotinib, cetuximab, and bevacizumab. More recently, he participated in the
successful  registration  of  pembrolizumab  for  the  treatment  of  advanced  non-small  cell  lung  cancer,  following  the  successful  Yale-led
KEYNOTE 10 study of the immune therapy drug commonly used to treat other cancers. He was co-leader for the BATTLE-1 clinical
trial  program,  co-leads  the  subsequent  BATTLE-2  clinical  trial  program,  and  served  as  a  Co-program  Leader  of  the  Developmental
Therapeutics  Program  for  the  YCC  Support  Grant.  Dr.  Herbst’s  laboratory  work  is  focused  on  immunotherapy  angiogenesis;  dual
epidermal  growth  factor  receptor  /vascular  endothelial  growth  factor  receptor  inhibition  in  non-small  cell  lung  cancer,  and  targeting
KRAS-activated pathways. More recently, he has explored predictive biomarkers for the use of immunotherapy agents. This work has
been translated from the preclinical to clinical setting in multiple Phase II and III studies which he has led. After earning a B.S. and M.S.
degree from Yale University, Dr. Herbst earned his M.D. at Cornell University Medical College and his Ph.D. in molecular cell biology
at the Rockefeller University in New York City, New York. His postgraduate training included an internship and residency in medicine at
Brigham and Women’s Hospital in Boston, Massachusetts. His clinical fellowships in medicine and hematology were completed at the
Dana-Farber Cancer Institute and Brigham and Women’s Hospital, respectively. Subsequently, Dr. Herbst completed a M.S. degree in
clinical translational research at Harvard University in Cambridge, Massachusetts. Dr. Herbst is an author or co-author of more than 275
publications,  including  peer-reviewed  journal  articles,  abstracts,  and  book  chapters.  His  work  has  been  published  in  many  prominent
journals, such as the Journal of Clinical Oncology, Clinical Cancer Research, Lancet, the New England Journal of Medicine, and Nature.
Dr.  Herbst  was  a  member  of  the  National  Cancer  Policy  Forum  from  1998  to  2014  for  which  he  organized  an  Institute  of  Medicine
meeting focused on policy issues in personalized medicine. He is a member of ASCO and, as a member of American Association for
Cancer Research, he chairs the Tobacco Task Force. He is a fellow of the American College of Physicians and an elected member of the
Association  of  American  Physicians.  Dr.  Herbst  is  also  a  member  of  the  medical  advisory  committee  for  the  Lung  Cancer  Research
Foundation and chair of the communications committee for ASCO and the International Association for the Study of Lung Cancer. He is
currently the Vice Chair for Developmental Therapeutics for the SWOG’s lung committee, a principal investigator of the SWOG 0819
trial, and steering committee chair for the Lung Master Protocol.

B. Compensation.

For the fiscal year ended December 31, 2023, we paid an aggregate of approximately US$7.4 million for salaries and benefits in
cash to our current and former executive officers, and an aggregate of approximately US$448 thousand for compensation in cash to our
independent directors. We did not pay any compensation to our directors who are not our independent directors or executive officers. We
have not set aside or accrued any amount to provide pension, retirement or other similar benefits to our executive officers and directors.
Our  PRC  subsidiary  is  required  by  law  to  make  contributions  equal  to  certain  percentages  of  each  employee’s  salary  for  his  or  her
pension insurance, medical insurance, unemployment insurance and other statutory benefits and a housing provident fund.

Employment Agreements and Indemnification Agreements

We  have  entered  into  employment  agreements  with  all  of  our  executive  officers.  Under  these  agreements,  each  of  our  executive
officers is employed for a specified time period. We may terminate employment for cause, at any time, for certain acts of the executive
officer, such as continued failure to satisfactorily perform, willful misconduct or gross negligence in the performance of agreed duties,
conviction or nolo contendere plea of guilty to any felony or any misdemeanor involving moral turpitude, or dishonest act that result in
material  harm  to  our  detriment,  or  material  breach  by  the  executive  officer  of  the  employment  agreement.  We  may  also  terminate  an
executive  officer’s  employment  without  cause  upon  a  60-day  prior  written  notice.  In  such  case  of  termination  by  us,  we  will  provide
severance payments to the executive officer as may be agreed between the executive officer and us. The executive officer may resign at
any time with a 60-day prior written notice.

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Under  these  agreements,  each  executive  officer  has  agreed  to  hold,  both  during  and  after  the  termination  or  expiry  of  his  or  her
employment agreement, in strict confidence and not to use, except as required in the performance of his or her duties in connection with
the employment or pursuant to applicable law, any of our confidential information or trade secrets, any confidential information or trade
secrets of our clients or prospective clients, or the confidential or proprietary information of any third party received by us and for which
we have confidential obligations. The executive officers have also agreed to disclose in confidence to us all inventions, designs and trade
secrets which they conceive, develop or reduce to practice during the executive officer’s employment with us and to assign all right, title
and interest in them to us, and assist us in obtaining and enforcing patents, copyrights and other legal rights for these inventions, designs
and trade secrets.

In  addition,  under  these  agreements,  each  executive  officer  has  agreed  to  be  bound  by  non-competition  and  non-solicitation
restrictions during the term of his or her employment and typically for one year following the last date of employment. Specifically, each
executive  officer  has  agreed  not  to  (i)  approach  our  suppliers,  clients,  direct  or  end  customers  or  contacts  or  other  persons  or  entities
introduced to the executive officer in his or her capacity as a representative of us for the purpose of doing business with such persons or
entities that will harm our business relationships with these persons or entities; (ii) assume employment with or provide services to any of
our competitors, or engage, whether as principal, partner, licensor or otherwise, any of our competitors, without our express consent; or
(iii) seek directly or indirectly, to solicit the services of any of our employees who is employed by us on or after the date of the executive
officer’s termination, or in the year preceding such termination, without our express consent.

We have also entered into indemnification agreements with each of our directors and executive officers. Under these agreements, we
agree to indemnify our directors and executive officers against certain liabilities and expenses incurred by such persons in connection
with claims made by reason of their being a director or officer of our company.

Share Incentive Plans

Second Amended and Restated 2017 Employee Stock Option Plan

In October 2017, we adopted an equity incentive plan (as last amended and restated in December 2019), which we refer to as the
2017 Plan, to secure and retain the services of valuable employees, directors or consultants, and provide incentives for such persons to
exert their best efforts for the success of our business. The maximum aggregate number of ordinary shares which may be issued pursuant
to all awards under the 2017 Plan is 9,609,084, subject to certain adjustments. As of April 15, 2024, options to purchase an aggregate of
1,108,636  ordinary  shares  under  the  2017  Plan  had  been  granted  and  remained  outstanding,  excluding  options  that  were  forfeited,
cancelled or exercised after the grant date.

The following paragraphs describe the principal terms of the 2017 Plan.

Types of awards. The 2017 Plan permits the awards of options.

Plan administration. Our board of directors administers the 2017 Plan. The board of directors determines, among other things, the
participants  to  receive  options,  the  number  and  subscription  price  of  options  to  be  granted  to  each  participant,  and  the  terms  and
conditions of each option granted.

Offer letter. Options granted under the 2017 Plan are evidenced by an offer letter that sets forth terms, conditions and limitations for
each  option,  which  may  include  the  term  of  the  option,  and  the  provisions  applicable  in  the  event  that  the  grantee’s  employment  or
service terminates.

Eligible participants. We may grant awards to employees, officers, directors, contractors, advisors and consultants of our company.

Vesting schedule. Unless otherwise approved by the board of directors and set forth in an offer letter, the vesting schedule is a three-
year vesting schedule consisting of a cliff vesting 50% on the second anniversary of the applicable vesting commencement date, and a
vesting of the remaining 50% on the third anniversary of the applicable vesting commencement date. Except as otherwise approved by
the board of directors, vested portion of option becomes exercisable upon the earlier of a listing or the occurrence of a change in control.

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Exercise of options. The board of directors determines the subscription price for each option, which is stated in the offer letter. The
vested portion of each option will expire if not exercised prior to the time as the board of directors determines at the time of its grant.
However, the maximum exercisable term is ten years from the applicable vesting commencement date or such shorter period specified in
the award agreement. Further, an option will lapse upon the earliest of, among other circumstances, two years after the date when the
option becomes exercisable upon the listing or the occurrence of a change in control, and a violation in transfer restrictions.

Transfer restrictions. Options may not be transferred in any manner by the participant other than in accordance with the exceptions
provided in the 2017 Plan or the offer letter or otherwise determined by the board of directors, such as transfers by will or the laws of
descent and distribution.

Termination  and  amendment  of  the  2017  Plan.  Unless  terminated  earlier,  the  2017  Plan  has  a  term  of  ten  years.  The  board  of
directors  has  the  authority  to  amend,  suspend  or  terminate  the  plan,  subject  to  the  limitations  of  applicable  laws.  No  amendment,
suspension  or  termination  may  adversely  affect  in  any  material  way  any  awards  previously  granted  pursuant  to  the  2017  Plan  unless
agreed to by the participant.

The following table summarizes, as of April 15, 2024, the number of ordinary shares underlying outstanding options that we granted

under the 2017 Plan, excluding options that were forfeited, cancelled or exercised after the grant date.

Name

Grantees
Total

Note:

Ordinary
Shares
Underlying
Outstanding
Options

Exercise
Price
(US$/Share)

*

 1.00

 1,108,636  

Date of Grant
October 1, 2017 to
December 28, 2018

Date of
Expiration

October 1, 2027

*

Less than 1% of our total outstanding shares.

Second Amended and Restated 2018 Employee Stock Option Plan

In February 2019, we adopted an equity incentive plan (as last amended and restated in December 2019), which we refer to as the
2018 Plan, to secure and retain the services of valuable employees, directors or consultants, and provide incentives for such persons to
exert their best efforts for the success of our business. The maximum aggregate number of ordinary shares which may be issued pursuant
to all awards under the 2018 Plan is 11,005,888, subject to certain adjustments. As of April 15, 2024, awards to purchase an aggregate of
598,388  ordinary  shares  under  the  2018  Plan  had  been  granted  and  remained  outstanding,  excluding  options  that  were  forfeited,
cancelled or exercised after the grant date.

The following paragraphs describe the principal terms of the 2018 Plan.

Types of awards. The 2018 Plan permits the awards of options.

Plan administration. Our board of directors administers the 2018 Plan. The board of directors determines, among other things, the
participants  to  receive  options,  the  number  and  subscription  price  of  options  to  be  granted  to  each  participant,  and  the  terms  and
conditions of each option granted.

Offer letter. Options granted under the 2018 Plan are evidenced by an offer letter that sets forth terms, conditions and limitations for
each  option,  which  may  include  the  term  of  the  option,  and  the  provisions  applicable  in  the  event  that  the  grantee’s  employment  or
service terminates.

Eligible participants. We may grant awards to employees or if approved by the board, designee of any employee.

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Vesting schedule. Unless otherwise approved by the board of directors and set forth in an offer letter, the vesting schedule is a two-
year  vesting  schedule  consisting  of  a  cliff  vesting  50%  on  the  first  anniversary  of  the  applicable  vesting  commencement  date,  and  a
vesting of the remaining 50% on the second anniversary of the applicable vesting commencement date. Notwithstanding the foregoing, if
a listing occurs at any time prior to any option granted under the 2018 Plan becoming full vested, and to the extent such option has been
granted and outstanding, any such option will vest in full with immediate effect upon the listing. Except as otherwise approved by the
board  of  directors,  vested  portion  of  option  becomes  exercisable  upon  the  earlier  of  six  months  after  a  listing  or  the  occurrence  of  a
change in control; provided, however that in each case, no option of an employee will become exercisable until the third anniversary of
such employee’s employment commencement date.

Exercise of options. The board of directors determines the subscription price for each option, which is stated in the offer letter. The
vested portion of each option will expire if not exercised prior to the time as the board of directors determines at the time of its grant.
However, the maximum exercisable term is ten years from the applicable vesting commencement date or such shorter period specified in
the award agreement. Further, an option will lapse upon the earliest of, among other circumstances, two years after the date when the
option becomes exercisable upon the listing or the occurrence of a change in control, and a violation in transfer restrictions.

Transfer restrictions. Options may not be transferred in any manner by the participant other than in accordance with the exceptions
provided in the 2018 Plan or the offer letter or otherwise determined by the board of directors, such as transfers by will or the laws of
descent and distribution.

Termination  and  amendment  of  the  2018  Plan.  Unless  terminated  earlier,  the  2018  Plan  has  a  term  of  ten  years.  The  board  of
directors  has  the  authority  to  amend,  suspend  or  terminate  the  plan,  subject  to  the  limitations  of  applicable  laws.  No  amendment,
suspension  or  termination  may  adversely  affect  in  any  material  way  any  awards  previously  granted  pursuant  to  the  2018  Plan  unless
agreed to by the participant.

The following table summarizes, as of April 15, 2024, the number of ordinary shares underlying our outstanding options that we

granted under the 2018 Plan, excluding options that were forfeited, cancelled or exercised after the grant date.

Ordinary
Shares
Underlying
Outstanding
Options

*

 598,388  

Exercise
Price
(US$/Share)
 1.00

     Date of Grant     
July 25, 2019

Date of
Expiration
February 22, 2029

Name
Grantees
Total

Note:

*

Less than 1% of our total outstanding shares.

2019 Share Incentive Plan

In October 2019, we adopted an equity incentive plan, which we refer to as 2019 Plan, to promote the success and enhance the value
of our company. Under the 2019 Plan, the maximum aggregate number of ordinary shares available for issuance is 100,000. As of April
15, 2024, no options under the 2019 Plan had been granted and remained outstanding, excluding options that were forfeited, cancelled or
exercised after the grant date.

The following paragraphs describe the principal terms of the 2019 Plan:

Type of Awards. The plan permits the awards of options, restricted shares, restricted share units or other types of awards approved by

the board of directors or a committee of one or more members of the board of directors.

Plan Administration. Our board of directors or a committee of one or more members of the board of directors administers the plan.
The committee or the board of directors, as applicable, determines the participants to receive awards, the type and number of awards to
be granted to each participant, and the terms and conditions of each grant

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Award Agreement.  Awards  granted  under  the  plan  are  evidenced  by  an  award  agreement  that  sets  forth  the  terms,  conditions  and
limitations  for  each  award,  which  may  include  the  term  of  the  award,  the  provisions  applicable  in  the  event  that  the  grantee’s
employment or service terminates, and our authority to unilaterally or bilaterally amend, modify, suspend, cancel or rescind the award.

Eligibility. We may grant awards to our independent directors, as determined by a committee of one or more members of the board
of  directors.  Vesting  Schedule.  In  general,  the  plan  administrator  determines  the  vesting  schedule,  which  is  specified  in  the  award
agreement.

Exercise of Options. The plan administrator determines the exercise price for each award, which is stated in the award agreement.
Options that are vested and exercisable will terminate if they are not exercised prior to the time as the plan administrator determines at
the time of grant. However, the maximum exercisable term is ten years from the date of grant.

Transfer Restrictions. Awards may not be transferred in any manner by the participant other than in accordance with the exceptions
provided in the plan or the award agreement or otherwise determined by the plan administrator, such as transfers by will or the laws of
descent and distribution.

Termination and Amendment of the Plan. Our board of directors has the authority to terminate, amend, suspend or modify the plan in
accordance with our articles of association. However, without the prior written consent of the participant, no such action may adversely
affect in any material way any award previously granted pursuant to the plan.

2020 Share Incentive Plan

In July 2020, we adopted 2020 Share Incentive Plan, which we refer to as the 2020 Plan, to promote the success and enhance the
value of our company. Under the 2020 Plan, the maximum aggregate number of ordinary shares which may be issued pursuant to all
awards is 10,760,513 ordinary shares; provided that the maximum number of ordinary shares may be issued pursuant to awards in the
form of restricted share units under the 2020 Plan should not exceed 7,686,081 ordinary shares. As of April 15, 2024, options to purchase
an aggregate of 2,054,670 ordinary shares and restricted share units to receive an aggregate of 23,580 ordinary shares under the 2020
Plan had been granted and remained outstanding, excluding awards that were forfeited, cancelled, exercised or vested after the grant date.

The following paragraphs describe the principal terms of the 2020 Plan:

Type of Awards. The plan permits the awards of options, restricted shares, restricted share units or other share-based awards.

Plan Administration. Our board of directors or one or more committees or subcommittees of the board of directors administer the
plan and determine the participants to receive awards, the type and number of awards to be granted to each participant, and the terms and
conditions of each grant.

Award Agreement.  Awards  granted  under  the  plan  are  evidenced  by  an  award  agreement  that  sets  forth  the  terms,  conditions  and
restrictions  for  each  award,  which  may  include  the  term  of  the  award,  the  provisions  applicable  in  the  event  that  the  grantee’s
employment or service terminates, and our authority to unilaterally or bilaterally amend, modify, suspend, cancel or rescind the award.

Eligibility. We may grant awards to our employees, directors and consultants of our company. However, we may grant options that

are intended to qualify as incentive share options only to our employees and employees of our subsidiaries.

Vesting Schedule. The options and restricted share units will vest according to the schedules specified in the plan, unless otherwise
determined by the plan administrator. The vesting schedule of other share-based awards should be determined by the plan administrator,
which is specified in the award agreement.

Exercise of Options. The plan administrator determines the exercise price for each award, which is stated in the award agreement.
Options that are vested and exercisable will terminate if they are not exercised prior to the time as the plan administrator determines at
the time of grant. However, the maximum exercisable term is ten years from the date of grant.

Transfer Restrictions. Awards may not be transferred in any manner by the participant other than in accordance with the exceptions
provided in the plan or the award agreement or otherwise determined by the plan administrator, such as transfers by will or the laws of
descent and distribution.

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Termination  and  Amendment  of  the  Plan.  Our  board  of  directors  has  the  authority  to  terminate,  amend  or  modify  the  plan  in

accordance with our articles of association.

The following table summarizes, as of April 15, 2024, the number of ordinary shares underlying outstanding options and restricted
share units that we granted under the 2020 Plan, excluding awards that were forfeited, cancelled, exercised or vested after the grant date.

Name
Grantees

Total

Notes:

     Ordinary Shares 

Underlying Options 
and Restricted Share  Exercise Price 

Units

(US$/Share)
 5.91
 19.67
 9.20
N/A

*
*  
*  
* (1)

Date of Grant
August 14, 2020 to January 11, 2021
April 1, 2021
March 4, 2022
August 14, 2020 to March 4, 2022

Date of Expiration
January 11, 2031
April 1, 2031
March 4, 2032
 —

 2,078,250  

*

Less than 1% of our total outstanding shares.

(1) Represents restricted share units.

2021 Share Incentive Plan

In May 2021, we adopted 2021 Share Incentive Plan, which we refer to as the 2021 Plan, to promote the success and enhance the
value of our company. Under the 2021 Plan, the maximum aggregate number of ordinary shares which may be issued pursuant to all
awards is 12,023,618 ordinary shares; provided that the maximum number of ordinary shares may be issued pursuant to awards in the
form of restricted share units under the 2021 Plan should not exceed 6,011,809 ordinary shares. As of April 15, 2024, options to purchase
an aggregate of 2,175,326 ordinary shares and restricted share units to receive an aggregate of 390,655 ordinary shares under the 2021
Plan had been granted and remained outstanding, excluding awards that were forfeited, cancelled, exercised or vested after the grant date.

The following paragraphs describe the principal terms of the 2021 Plan:

Type of Awards. The plan permits the awards of options, restricted shares, restricted share units or other share-based awards.

Plan Administration. Our board of directors or one or more committees or subcommittees of the board of directors administer the
plan and determine the participants to receive awards, the type and number of awards to be granted to each participant, and the terms and
conditions of each grant.

Award Agreement.  Awards  granted  under  the  plan  are  evidenced  by  an  award  agreement  that  sets  forth  the  terms,  conditions  and
restrictions  for  each  award,  which  may  include  the  term  of  the  award,  the  provisions  applicable  in  the  event  that  the  grantee’s
employment or service terminates, and our authority to unilaterally or bilaterally amend, modify, suspend, cancel or rescind the award.

Eligibility. We may grant awards to our employees, directors and consultants of our company. However, we may grant options that

are intended to qualify as incentive share options only to our employees and employees of our subsidiaries.

Vesting Schedule. The options and restricted share units will vest according to the schedules specified in the plan, unless otherwise
determined by the plan administrator. The vesting schedule of other share-based awards should be determined by the plan administrator,
which is specified in the award agreement.

Exercise of Options. The plan administrator determines the exercise price for each award, which is stated in the award agreement.
Options that are vested and exercisable will terminate if they are not exercised prior to the time as the plan administrator determines at
the time of grant. However, the maximum exercisable term is ten years from the date of grant.

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Transfer Restrictions. Awards may not be transferred in any manner by the participant other than in accordance with the exceptions
provided in the plan or the award agreement or otherwise determined by the plan administrator, such as transfers by will or the laws of
descent and distribution.

Termination  and  Amendment  of  the  Plan.  Our  board  of  directors  has  the  authority  to  terminate,  amend  or  modify  the  plan  in

accordance with our articles of association.

The following table summarizes, as of April 15, 2024, the number of ordinary shares underlying outstanding options and restricted
share units that we granted under the 2021 Plan, excluding awards that were forfeited, cancelled, exercised or vested after the grant date.

Ordinary Shares
Underlying Options
and Restricted Share Exercise Price

Units

     (US$/Share)     

Date of Grant

     Date of Expiration
 —
N/A July 27, 2021 to May 23, 2023
July 27, 2031
July 27, 2021
March 4, 2022 March 4, 2032
January 4, 2033
January 4, 2023

 26.39
 9.20
 6.20

* (1)
*  
*
*  
 2,565,981  

Name
Grantees

Total

Notes:

*

Less than 1% of our total outstanding shares.

(1) Represents restricted share units.

2022 Share Incentive Plan

In June 2022, we adopted 2022 Share Incentive Plan, which we refer to as the 2022 Plan, to promote the success and enhance the
value of our company. Under the 2022 Plan, the maximum aggregate number of ordinary shares which may be issued pursuant to all
awards is 13,148,594 ordinary shares; provided that the maximum number of ordinary shares may be issued pursuant to awards in the
form of restricted share units under the 2022 Plan should not exceed 5,478,577 ordinary shares. Notwithstanding the foregoing, if we
successfully complete extraordinary goals as approved by our board of directors, or such extraordinary goals are waived by our board of
directors, the maximum aggregate number of ordinary shares which may be issued pursuant to all awards is 15,340,034 ordinary shares;
provided that the maximum number of ordinary shares may be issued pursuant to awards in the form of restricted share units under the
2022  Plan  should  not  exceed  7,670,017  ordinary  shares.  The  maximum  aggregate  number  of  ordinary  shares  which  may  be  issued
pursuant  to  all  awards  under  the  2022  Plan  shall  be  proportionately  adjusted  in  the  event  of  any  share  dividend,  subdivision,
reclassification, recapitalization, split, reverse split, combination, consolidation or similar transactions. As of April 15, 2024, options to
purchase an aggregate of 2,695,271 ordinary shares and restricted share units to receive an aggregate of 446,262 ordinary shares under
the 2022 Plan had been granted and remained outstanding, excluding awards that were forfeited, cancelled, exercised or vested after the
grant date.

The following paragraphs describe the principal terms of the 2022 Plan:

Type of Awards. The plan permits the awards of options, restricted shares, restricted share units or other share-based awards.

Plan Administration. Our board of directors or any authorized officer to the extent that the Board’s powers or authority under the
Plan have been delegated to such officer administers the plan and determines the participants to receive awards, the type and number of
awards to be granted to each participant, and the terms and conditions of each grant.

Award Agreement.  Awards  granted  under  the  plan  are  evidenced  by  an  award  agreement  that  sets  forth  the  terms,  conditions  and
restrictions  for  each  award,  which  may  include  the  term  of  the  award,  the  provisions  applicable  in  the  event  that  the  grantee’s
employment or service terminates, and our authority to unilaterally or bilaterally amend, modify, suspend, cancel or rescind the award.

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Eligibility. We may grant awards to our employees, directors, consultants and other service providers of our company that our board
of directors or any authorized officer deems appropriate. However, we may grant options that are intended to qualify as incentive share
options only to our employees and employees of our subsidiaries.

Vesting Schedule. The plan administrator determines conditions and the time or times at which options and restricted share units may
be exercised in whole or part. The vesting schedule of other share-based awards should be determined by the plan administrator, which is
specified in the award agreement.

Exercise of Options. The plan administrator determines the price, conditions and time(s) for exercising each award, which is stated in
the  award  agreement.  Options  that  are  vested  and  exercisable  will  terminate  if  they  are  not  exercised  prior  to  the  time  as  the  plan
administrator determines at the time of grant. However, the maximum exercisable term is ten years from the date of grant.

Transfer Restrictions. Awards may not be transferred in any manner by the participant other than in accordance with the exceptions
provided in the plan or the award agreement or otherwise determined by the plan administrator, such as transfers by will or the laws of
descent and distribution.

Termination  and  Amendment  of  the  Plan.  Our  board  of  directors  has  the  authority  to  terminate,  amend  or  modify  the  plan  in

accordance with our articles of association.

The following table summarizes, as of April 15, 2024, the number of ordinary shares underlying outstanding options and restricted
share units that we granted under the 2022 Plan, excluding awards that were forfeited, cancelled, exercised or vested after the grant date.

Ordinary Shares 
Underlying Options and

Exercise
Price

      Restricted Share Units     (US$/Share)     Date of Grant

* (1)

 2,372,696
*
 3,141,533

N/A January 4, 2023
January 4, 2023
 2.41
January 4, 2023
 6.20

     Date of Expiration
 —
January 4, 2033
January 4, 2033

Name
Grantees

Total

Notes:

*

Less than 1% of our total outstanding shares.

(1) Represents restricted share units.

C. Board Practices.

As of the date of this annual report, our board of directors consists of eight directors. A director is not required to hold any shares in
our  company  by  way  of  qualification.  Subject  to  the  Nasdaq  Global  Market  rules  and  disqualification  by  the  chairman  of  the  board
meeting, a director may vote with respect to any contract, proposed contract or arrangement in which he is interested. A director who is
interested in a contract, proposed contract or arrangement should declare the nature of his or her interest at the earliest meeting of the
board at which it is practicable for him or her to do so, either specifically or by way of a general notice. The directors may exercise all
the  powers  of  our  company  to  borrow  money,  mortgage  its  undertaking,  property  and  uncalled  capital,  and  issue  debentures  or  other
securities whenever money is borrowed or as security for any obligation of our company or of any third party. None of our directors who
are not our executive officers has a service contract with us that provides for benefits upon termination of service.

Committees of the Board of Directors

We have established four committees under the board of directors: an audit committee, a compensation committee, a nominating and
corporate governance committee, and an environmental, social and governance (ESG) committee. We have adopted a charter for each of
the four committees. Each committee’s members and functions are described below.

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Audit Committee. Our audit committee consists of Mr. Conor Chia-hung Yang, Mr. Chun Kwok Alan Au and Mr. Shuai Chen. Mr.
Conor  Chia-hung  Yang  is  the  chairperson  of  our  audit  committee.  We  have  determined  that  each  of  Mr.  Conor  Chia-hung  Yang,  Mr.
Chun  Kwok  Alan  Au  and  Mr.  Shuai  Chen  satisfies  the  “independence”  requirements  of  Rule  5605(c)(2)  of  the  Nasdaq  Stock  Market
Rules and meets the independence standards under Rule 10A-3 under the Exchange Act. We have determined that Mr. Conor Chia-hung
Yang qualifies as an “audit committee financial expert.” The audit committee oversees our accounting and financial reporting processes
and the audits of the financial statements of our company. The audit committee is responsible for, among other things:

● appointing the independent auditors and pre-approving all auditing and non-auditing services permitted to be performed by the

independent auditors;

● reviewing with the independent auditors any audit problems or difficulties and management’s response;

● discussing the annual audited financial statements with management and the independent auditors;

● reviewing the adequacy and effectiveness of our accounting and internal control policies and procedures and any steps taken to

monitor and control major financial risk exposures;

● reviewing and approving all proposed related party transactions;

● meeting separately and periodically with management and the independent auditors; and

● monitoring compliance with our code of business conduct and ethics, including reviewing the adequacy and effectiveness of our

procedures to ensure proper compliance.

Compensation Committee. Our compensation committee consists of Mr. Chun Kwok Alan Au, Dr. Pamela M. Klein, and Dr. Ruyi
He. Dr. Pamela M. Klein is the chairperson of our compensation committee. We have determined that each of Mr. Chun Kwok Alan Au,
Dr. Pamela M. Klein and Dr. Ruyi He satisfies the “independence” requirements of Rule 5605(a)(2) of the Nasdaq Stock Market Rules.
The  compensation  committee  assists  the  board  in  reviewing  and  approving  the  compensation  structure,  including  all  forms  of
compensation, relating to our directors and executive officers. Our chief executive officer may not be present at any committee meeting
during which his compensation is deliberated. The compensation committee is responsible for, among other things:

● reviewing and approving, or recommending to the board for its approval, the compensation for our chief executive officer and

other executive officers;

● reviewing and recommending to the board for determination with respect to the compensation of our directors who are not our

employees;

● reviewing periodically and approving any incentive compensation or equity plans, programs or similar arrangements; and

● selecting compensation consultant, legal counsel or other adviser only after taking into consideration all factors relevant to that

person’s independence from management.

Nominating and Corporate Governance Committee. Our nominating and corporate governance committee consists of Mr. Wei Fu,
Mr. Chun Kwok Alan Au, Mr. Conor Chia-hung Yang and Dr. Rong Shao. Mr. Wei Fu is the chairperson of our nominating and corporate
governance  committee.  We  have  determined  that  each  of  Mr.  Chun  Kwok  Alan  Au,  Mr.  Conor  Chia-hung  Yang  and  Dr.  Rong  Shao
satisfies  the  “independence”  requirements  of  Rule  5605(a)(2)  of  the  Nasdaq  Stock  Market  Rules.  The  nominating  and  corporate
governance  committee  assists  the  board  of  directors  in  selecting  individuals  qualified  to  become  our  directors  and  in  determining  the
composition  of  the  board  and  its  committees.  The  nominating  and  corporate  governance  committee  is  responsible  for,  among  other
things:

● selecting and recommending to the board nominees for election by the shareholders or appointment by the board;

● reviewing annually with the board the current composition of the board with regards to characteristics such as independence,

knowledge, skills, experience and diversity;

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● making recommendations on the frequency and structure of board meetings and monitoring the functioning of the committees

of the board; and

● advising the board periodically with regards to significant developments in the law and practice of corporate governance as well
as our compliance with applicable laws and regulations, and making recommendations to the board on all matters of corporate
governance and on any corrective action to be taken.

Environmental,  Social  and  Governance  Committee.  Our  environmental,  social  and  governance  committee  consists  of  Mr.  Chun
Kwok Alan Au and Dr. Rong Shao. Mr. Chun Kwok Alan Au is the chairman of our environmental, social and governance committee.
We have determined that each of Mr. Chun Kwok Alan Au and Dr. Rong Shao satisfies the “independence” requirements of Rule 5605(a)
(2) of the Nasdaq Stock Market Rules. In addition, we have also established an ESG working group to address daily ESG workflows.
The environmental, social and governance committee is responsible for, among other things:

● supervising the ESG strategies, policies, long-term sustainability objectives and risks.

Duties of Directors

Under Cayman Islands law, our directors owe fiduciary duties to our company, including a duty of loyalty, a duty to act honestly, and
a duty to act in what they consider in good faith to be in our best interests. Our directors must also exercise their powers only for a proper
purpose.  A  director  must  exercise  the  skill  and  care  of  a  reasonably  diligent  person  having  both  (a)  the  general  knowledge,  skill  and
experience that may reasonably be expected of a person in the same position (an objective test), and (b) if greater, the general knowledge,
skill and experience that that director actually possesses (a subjective test). In fulfilling their duty of care to us, our directors must ensure
compliance with our memorandum and articles of association, as amended from time to time, and the class rights vested thereunder in the
holders of the shares. Our company has the right to seek damages if a duty owed by our directors is breached. A shareholder may in
certain limited circumstances have the right to seek damages in our name if a duty owed by the directors is breached.

Our  board  of  directors  has  all  the  powers  necessary  for  managing,  and  for  directing  and  supervising,  our  business  affairs.  The

functions and powers of our board of directors include:

● convening shareholders’ annual general meetings and reporting its work to shareholders at such meetings;

● declaring dividends and other distributions;

● appointing officers and determining the term of office of the officers;

● exercising the borrowing powers of our company and mortgaging the property of our company; and

● approving the transfer of shares in our company, including the registration of such shares in our share register.

Terms of Directors and Officers

Our  directors  may  be  elected  by  an  ordinary  resolution  of  our  shareholders.  Alternatively,  our  board  of  directors  may,  by  the
affirmative  vote  of  a  simple  majority  of  the  directors  present  and  voting  at  a  board  meeting  appoint  any  person  as  a  director  to  fill  a
casual vacancy on our board or as an addition to the existing board. Our directors (other than independent directors) are not automatically
subject to a term of office and hold office until such time as they are removed from office by an ordinary resolution of our shareholders.
Our independent directors hold office until the earlier of (i) the date on which the independent director ceases to be a member of the
board for any reason; (ii) the date of termination of an independent director’s director agreement, which may be terminated by either the
independent director or by us with a 30-day advance written notice or such other shorter period as mutually agreed; or (iii) three years
from  the  effective  date  of  the  director  agreement,  subject  to  the  terms  of  our  current  memorandum  and  articles  of  association  of  our
company. In addition, a director will cease to be a director if he or she (i) becomes bankrupt or makes any arrangement or composition
with  his  or  her  creditors;  (ii)  dies  or  is  found  to  be  or  becomes  of  unsound  mind;  (iii)  resigns  his  or  her  office  by  notice  in  writing;
(iv) without special leave of absence from our board, is absent from meetings of our board for three consecutive meetings and our board
resolves that his or her office be vacated; or (v) is removed from office pursuant to any other provision of our articles of association.

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Our officers are appointed by and serve at the discretion of the board of directors, and may be removed by our board of directors.
Under our articles of association, the board of directors may appoint one or more of their number to the office of managing director upon
like terms, but any such appointment should ipso facto terminate if any managing director ceases for any cause to be a director, or if our
company by ordinary resolution of shareholders resolves that his tenure of office be terminated. In addition, the board of directors may
appoint any natural person or corporation to be a secretary (and if need be an assistant secretary or assistant secretaries) who should hold
office for such term, at such remuneration and upon such conditions and with such powers as they think fit. Any secretary or assistant
secretary so appointed by the board of directors may be removed by the board of directors or by ordinary resolution of shareholders.

Board Diversity Matrix (As of April 15, 2024)

Board Diversity

Country of Principal Executive Offices:
Foreign Private Issuer
Disclosure Prohibited Under Home Country Law
Total Number of Directors

Part I: Gender Identity
Directors
Part II: Demographic Background
Underrepresented Individual in Home Country Jurisdiction
LGBTQ+
Did Not Disclose Demographic Background

D. Employees.

United States
Yes
No
8

     Female

     Male

    Non-Binary     Disclose Gender

Did Not

2

6

 —  

 —

—
—
—

We  had  378,  318  and  220  employees  as  of  December  31,  2021,  2022  and  2023,  respectively.  As  of  December  31,  2023,  184
employees  were  located  in  China  and  36  were  located  outside  China.  The  table  below  sets  forth  our  employees  by  function  as  of
December 31, 2023:

Management
Research and development
Chemistry, manufacturing and controls
General and administrative
Business and corporate development
Total

Number

 11
 130
 29
 44
 6
 220

We recruit our employees primarily through recruitment websites, recruiters, internal referrals and job fairs. Approximately 25% of
total employees were hired through internal referrals. We recruit our employees based on their qualification and potential. We promote
culture diversity, and our employees come from the United States, Taiwan and Canada, in addition to mainland China. We prohibit any
form  of  discrimination  (including,  but  not  limited  to,  employment,  career  development,  salary,  and  benefits)  on  the  basis  of  an
employees’  gender,  race,  age,  physical  condition,  sexual  orientation,  marital  status,  or  disability,  so  as  to  ensure  a  diverse  and  fair
corporate  culture.  We  aim  to  be  a  role  model  in  promoting  female  business  leadership  in  the  biotech  industry.  We  have  undertaken
multiple  initiatives  to  encourage  female  leadership,  including  launching  the  I-Mab  Women’s  Leadership  Council  in  July  2020.
Approximately  71%  of  our  employees  are  female,  of  which  65%  hold  a  master’s  degree  or  above,  while  over  27%  of  our  board  of
directors are female. We are carrying out a series of female leadership development programs committed to women’s career and personal
development.

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We  offer  competitive  salaries,  benefits,  and  additional  incentive  to  its  employees.  Employee  compensation  and  benefits  include
position-specific  salary,  bonus  and  allowance,  statutory  insurance,  and  housing  employee  benefit  funds  (for  those  in  China),  statutory
holidays, benefits and vacations, etc. In addition, we purchase additional commercial insurance for employees’ underaged children, as
well  as  a  series  of  internal  morale  boosting  incentive  programs.  We  work  to  reward  employees  for  exceptional  performance.  Our
employee awards include Project Awards, Quarterly Stars, Management Awards, etc., with the goal of creating a culture of recognition.

We  provide  new  hire  training  to  our  employees  and  periodic  on-the-job  training  to  enhance  the  skills  and  knowledge  of  our
employees. We invest in employees’ career development and provide them opportunities to keep updating their skills and knowledge.
Our  training  system  includes  induction  training  for  new  employees,  training  on  general  knowledge,  professional  skills  training,  and
leadership  training,  among  which,  leadership  training  focuses  on  improving  employees’  knowledge  and  ability  in  compliance
management,  drug  quality  control,  business  audit,  financial  standard  procedures,  as  well  as  female  leadership  development.  We
encourage  our  employees  to  develop  various  training  courses,  and  grade  the  content  setting,  applicability,  practicability,  and  lecturer
quality of the courses, to continuously improve them through collecting and addressing feedbacks. We have not established a labor union.
We have not experienced any material labor disputes or strikes that may have a material and adverse effect on our business, financial
condition or results of operations.

We enter into standard confidentiality and employment agreements with all of our key management and research staff. The contracts
with our key personnel typically include a standard non-compete agreement that prohibits the employee from competing with us, directly
or indirectly, during his or her employment and for one year after the termination of his or her employment. The contracts also typically
include undertakings regarding assignment of innovations and discoveries made during the course of his or her employment. For further
details  regarding  the  terms  of  confidentiality  and  employment  agreements  with  our  key  management,  see  “Item  6.  Directors,  Senior
Management and Employees.”

E. Share Ownership.

The following table sets forth information with respect to the beneficial ownership of our ordinary shares as of April 15, 2024 by:

● each of our directors and executive officers; and

● each person known to us to own beneficially 5% or more of our total outstanding shares.

Percentage  of  beneficial  ownership  is  based  on  186,030,689  total  outstanding  ordinary  shares  as  of  April  15,  2024  (excluding
8,043,040 ordinary shares issued to our depositary bank for bulk issuance of ADSs reserved for future issuances upon the exercising or
vesting of awards granted under our share incentive plans).

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Beneficial  ownership  is  determined  in  accordance  with  the  rules  and  regulations  of  the  SEC.  In  computing  the  number  of  shares
beneficially owned by a person and the percentage ownership of that person, we have included shares that the person has the right to
acquire within 60 days, including through the exercise of any option, warrant or other right or the conversion of any other security. These
shares, however, are not included in the computation of the percentage ownership of any other person.

Directors and Executive Officers:**
Raj Kannan
Wei Fu (1)
Shuai Chen
Chun Kwok Alan Au
Conor Chia-hung Yang
Pamela M. Klein, M.D.
Ruyi He, M.D.
Rong Shao, Ph.D.
Joseph Skelton
All Directors and Executive Officers as a Group
Other Principal Shareholders:
C-Bridge entities (1)
T INVESTMENT LIMITED (2)
Hillhouse entities (3)

Notes:

Ordinary Shares
Beneficially Owned

Number

%

 —

 29,448,395  
 —  
 —
 —  
 —  
 —  
 —  
 —

 29,448,395  

29,448,395
18,795,651
15,891,211

 —
 15.8
 —
 —
 —
 —
 —
 —
 —
 15.8

15.8
10.1
8.5

*

Less than 1% of our total ordinary shares on an as-converted basis outstanding as of April 15, 2024.

** Except as otherwise indicated below, the business address of our directors and executive officers is 2440 Research Blvd, Suite 400,
Rockville, MD 20850, the United States. The business address of Wei Fu is 88 Market Street, #46-04/05 Capitaspring, Singapore.
The business address of Mr. Shuai Chen is 25/F, Hexa International Plaza, No.9 Chaoyangmen North Street, Dongcheng District,
Beijing,  China.  The  business  address  of  Ruyi  He  is  Unit  1506,  Central  Tower,  China  Overseas  Plaza,  No.8  Guanghua  Dongli,
Chaoyang  District,  Beijing,  China.  The  business  address  of  Rong  Shao  is  No.  24  Tongjiaxiang,  Gulou  District,  Nanjing,  Jiangsu
Province, China. The business address of Chun Kwok Alan Au is 22 Pottinger Street, Central, Hong Kong. The business address of
Conor  Chia-hung  Yang  is  11/F,  Building  One,  EHang  Technology  Park,  No.  29  Bishan  Blvd.,  Huangpu  District,  Guangzhou,
Guangdong  Province,  China.  The  business  address  of  Pamela  M.  Klein  is  231  Fort  Mason,  San  Francisco,  California  94123,  the
United States.

(1) Represents  (i)  1,583,280  ADSs  and  10  ordinary  shares  directly  held  by  IBC  Investment  Seven  Limited,  a  Hong  Kong  limited
liability company, (ii) 2,423,720 ADSs and 4 ordinary shares directly held by CBC SPVII LIMITED, a Hong Kong limited liability
company,  (iii)  5,123,540  ADSs  and  22  ordinary  shares  directly  held  by  CBC  Investment  I-Mab  Limited,  a  British  Virgin  Islands
limited  liability  company,  (iv)  1,030,230  ADSs  and  17  ordinary  shares  directly  held  by  C-Bridge  II  Investment  Ten  Limited,  a
British Virgin Islands limited liability company, and (v) 6,078,571 ordinary shares directly held by Everest. IBC Investment Seven
Limited,  CBC  SPVII  LIMITED,  CBC  Investment  I-Mab  Limited,  C-Bridge  II  Investment  Ten  Limited,  Everest  are  collectively
referred  to  as  the  C-Bridge  entities.  CBC  Investment  I-Mab  Limited,  C-Bridge  II  Investment  Ten  Limited  and  C-Bridge  II
Investment  Thirteen  Limited  are  controlled  by  C-Bridge  Healthcare  Fund  II,  L.P.,  whose  general  partner  is  C-Bridge  Healthcare
Fund GP II, L.P., and its general partner is C-Bridge Capital GP, Ltd. CBC SPVII Limited and IBC Investment Seven Limited are
controlled  by  I-Bridge  Healthcare  Fund,  L.P.,  whose  general  partner  is  I-Bridge  Healthcare  GP,  L.P.,  and  its  general  partner  is  I-
Bridge  Capital  GP,  Ltd.,  which  is  indirectly  controlled  by  C-Bridge  Capital  GP,  Ltd.  Mr.  Wei  Fu  is  the  sole  director  of  C-Bridge
Capital GP, Ltd. Everest is a public company listed on the Hong Kong Stock Exchange and controlled by funds which are under
common control of the C-Bridge group, which, in turn, is controlled by Mr. Wei Fu. Information regarding beneficial ownership is
reported  as  of  December  31,  2022,  based  on  the  information  contained  in  the  Schedule  13G/A  filed  by  the  C-Bridge  entities  on
February 15, 2023. Please see the Schedule 13G/A filed by the C-Bridge entities with SEC on February 15, 2023 for information
relating  to  the  C-Bridge  entities.  The  business  address  of  each  of  C-Bridge  entities  is  Suite  3306-3307,  Two  Exchange  Square,  8
Connaught Place, Central, Hong Kong.

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(2) Represents  8,172,022  ADSs  held  by  T  INVESTMENT  LIMITED.  Information  regarding  beneficial  ownership  is  reported  as  of
November  23,  2023,  derived  from  the  information  contained  in  the  Schedule  13D  filed  by  T  INVESTMENT  LIMITED  on
December  1,  2023,  assuming  the  shares  reported  thereunder  refer  to  the  ADSs.  Please  see  the  Schedule  13D  filed  by  T
INVESTMENT LIMITED with SEC on December 1, 2023 for information relating to T INVESTMENT LIMITED. The principal
office of T Invest is Flat B, 4th Floor, Haven Commercial Building 6-8, Tsing Fung Street, Hong Kong.

(4) Represents  (i)  6,909,220  ADSs  (representing  15,891,206  ordinary  shares)  held  by  funds  managed  by  HHLR  Advisors,  Ltd.,  or
HHLR,  an  exempted  Cayman  Islands  company,  and  (ii)  5  ordinary  shares  held  by  a  fund  managed  by  Hillhouse  Investment
Management,  Ltd.,  or  HIM,  an  exempted  Cayman  Islands  company.  HHLR  acts  as  the  sole  investment  manager  of  YHG
Investment, L.P., or YHG, and the sole management company of HHLR Fund, L.P., or HHLR Fund. HHLR is hereby deemed to be
the  beneficial  owner  of,  and  to  control  the  voting  and  investment  power  of,  the  voting  ordinary  shares  held  by  YHG  and  HHLR
Fund.  HIM  acts  as  the  sole  management  company  of  Hillhouse  Fund  IV,  L.P.,  or  Fund  IV.  Fund  IV  owns  HH  IMB  Holdings
Limited, or HH IMB. HIM is hereby deemed to be the beneficial owner of, and to control the voting and investment power of, the
voting ordinary shares held by HH IMB. HH IMB, YHG and HHLR Fund are collectively referred to as the Hillhouse entities. The
directors of each of HHLR and HIM are Colm O’Connell and Bridget Kidner. Mr. O’Connell and Ms. Kidner are employees of each
of HHLR and HIM and Mr. Lei Zhang is the Founder and President of each of HHLR and HIM. Information regarding beneficial
ownership is reported as of June 28, 2023, based on the information contained in the Schedule 13D/A jointly filed by HHLR and
HIM on June 30, 2023. Please see the Schedule 13D/A jointly filed by HHLR and HIM with SEC on June 30, 2023 for information
relating to the Hillhouse entities, HHLR and HIM. The business address of each of HHLR and HIM is Office #122, Windward 3
Building, Regatta Office Park, West Bay Road, Grand Cayman, Cayman Islands, KY1-9006.

To our knowledge, as of April 15, 2024, 168,563,781 of our ordinary shares were held by three record holders in the United States
(including  8,043,040  ordinary  shares  issued  to  our  depositary  bank  for  bulk  issuance  of  ADSs  reserved  for  future  issuances  upon  the
exercising  or  vesting  of  awards  granted  under  our  share  incentive  plans),  representing  approximately  90.6%  of  our  total  outstanding
shares. One of the U.S. holders is Citibank, N.A., the depositary of our ADS program. The number of beneficial owners of our ADSs in
the United States is likely to be much larger than the number of record holders of our ordinary shares in the United States. We are not
aware of any arrangement that may, at a subsequent date, result in a change of control of our company.

F. Disclosure of a Registrant’s Action to Recover Erroneously Awarded Compensation

Not applicable.

ITEM 7. MAJOR SHAREHOLDERS AND RELATED PARTY TRANSACTIONS

A. Major Shareholders

Please refer to “Item 6. Directors, Senior Management and Employees—E. Share Ownership.”

B. Related Party Transactions

Shareholders Agreement

In July 2019, we entered into our fourth amended and restated shareholders agreement with our then-shareholders.

The shareholders agreement provides for certain special rights, including right of first refusal, co-sale rights, preemptive rights and
contains  provisions  governing  the  board  of  directors  and  other  corporate  governance  matters.  Those  special  rights,  as  well  as  the
corporate governance provisions, automatically terminated upon the completion of our initial public offering.

Pursuant  to  our  shareholders  agreement,  we  have  granted  certain  registration  rights  to  our  shareholders.  Set  forth  below  is  a

description of the registration rights granted under the agreement.

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Demand  Registration  Rights.  The  holders  of  a  majority  of  the  registrable  securities  then  issued  and  outstanding  may  request  in
writing that we file a registration statement covering the registration of at least 20% of the registrable securities (or any lesser percentage
if the anticipated gross receipts from the offering are to exceed US$5.0 million). Upon such a request, we should, within ten business
days of the receipt of such written request, give written notice of such request to all holders, and use our best efforts to effect, as soon as
practicable,  the  registration  of  all  registrable  securities  that  the  holders  request  to  be  registered  and  included  in  such  registration  by
written  notice  given  by  such  holders  to  us  within  20  days  after  receipt  of  the  request  notice.  We  have  the  right  to  defer  filing  of  a
registration statement for a period of not more than 90 days after receipt of the request of the initiating holders if our board of directors
determines in good faith that filing of such registration statement at such time will be materially detrimental to us or our shareholders, but
we cannot exercise the deferral right more than once during any twelve-month period and cannot register any other securities during such
twelve-month period. We are not obligated to effect any such registration if we have, within the six-month period preceding the date of
such  request,  already  effected  a  registration.  We  are  not  obligated  to  effect  more  than  three  demand  registrations.  This  demand
registration right is subject to the customary exclusion right of the underwriters.

Registration on Form F-3. If we qualify for registration on Form F-3, any holder or holders of a majority of all registrable securities
then  issued  and  outstanding  may  request  in  writing  that  we  effect  a  registration  on  Form  F-3  (or  an  equivalent  registration  in  a
jurisdiction outside of the U.S.). We should promptly give written notice of the proposed registration and as soon as practicable, effect
such  registration  within  20  days  after  we  provide  the  aforesaid  written  notice.  The  holders  are  entitled  to  an  unlimited  number  of
registrations on Form F-3 so long as such registration offerings are in excess of US$500,000. We are not obligated to effect any such
registration  if  we  have,  within  the  six-month  period  preceding  the  date  of  such  request,  already  effected  a  registration  other  than  a
registration from which registrable securities of the holders have been excluded, or if we would be required to qualify to do business or
to execute a general consent to service of process in effecting such registration in any particular jurisdiction.

Piggyback Registration Rights.  If  we  propose  to  register  for  a  public  offering  of  our  securities  (other  than  registration  statements
relating to demand registration, Form F-3 registration, any employee benefit plan or a corporate reorganization), we should give written
notice of such registration to all holders of registrable securities at least 30 days prior to filing any registration statement and afford each
such holder an opportunity to be included in such registration. If a holder decides not to include all of its registrable securities in any
registration statement thereafter filed by us, such holder will nevertheless continue to have the right to include any registrable securities
in any subsequent registration statement or registration statements as may be filed by us, subject to certain limitations. This piggyback
registration right is subject to the customary exclusion right of the underwriters.

Expenses of Registration.

We will bear all registration expenses. Each holder, however, should bear its proportionate share of all of the underwriting discounts
and  selling  commissions  applicable  to  the  sale  of  registrable  securities  or  other  amounts  payable  to  underwriter(s)  or  brokers  in
connection with such offering by the holders.

Termination of Obligations.

Our obligations to effect any demand, Form F-3 or piggyback registration will terminate upon the earlier of (i) January 22, 2030,
which is the tenth anniversary of our initial public offering, or (ii) with respect to any shareholder, the date on which such shareholder is
eligible to sell all of the registrable securities held by it under Rule 144 within any 90-day period without volume limitations.

Deed of Undertaking

In December 2019, a deed of undertaking was made by our company and a few shareholders of our company, each as a warrantor, to
the other shareholders of our company (other than the shareholder warrantors), each as a warrantee, pursuant to which each warrantor
represents and warrants to each warrantee that it has provided each warrantee with all information and documents in connection with the
initial public offering of our company that has the effect of establishing rights or otherwise benefiting any shareholder in a manner more
favorable than the corresponding terms applicable to the warrantee in relation to the initial public offering of our company (collectively,
the  “More  Favorable  Arrangements”).  Pursuant  to  the  deed  of  undertaking,  until  the  fifth  anniversary  of  the  completion  of  our  initial
public  offering,  we  will  not  directly  or  indirectly  enter  into  any  agreements  or  arrangements  or  modify,  amend  or  waive  any  existing
agreements or arrangements of any kind that would have the effect of establishing the More Favorable Arrangements; provided that it
will be allowed to adopt or modify any employee incentive plans and grant options to the management or any employee of our company
after our initial public offering pursuant to such plans and in accordance with the then effective memorandum and articles of association
and the applicable listing rules for the purpose of rewarding their bona fide services.

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Subscription Agreement with Hillhouse Entities

In  September  2020,  we  entered  into  a  Subscription  Agreement  with  the  Hillhouse  Entities,  as  amended  by  an  amendment  to
Subscription Agreement entered into between Hillhouse Entities and our company in December 2020. The Subscription Agreement, as
amended,  provides  for  (i)  certain  investors’  rights,  such  as  registration  rights,  board  representation  rights  and  anti-dilution  rights  and
(ii) lock-up and other transfer restrictions. Set forth below is a description of certain rights and restrictions thereof.

Demand Registration Rights. Upon written request from the Hillhouse Entities at any time after we have effected two registration
statements abovementioned, with respect to the registrable securities then held by the Hillhouse Entities, and in no event later than the
forty-five (45) calendar days following the delivery of such request, we should file a prospectus supplement or a registration statement to
register the resale of such registrable securities on a Form F-3 or Form F-3ASR registration statement (or, if Form F-3 or Form F-3ASR
is not then available to us, on Form F-1 or such other form of registration statement as is then available to effect a registration for resale
of  such  registrable  securities),  have  such  registration  statement  declared  effective,  and  maintain  the  effectiveness  of  such  registration
statement  for  a  period  ending  on  the  date  the  registrable  securities  registered  thereon  have  ceased  to  be  registrable  securities.  If  the
registrable  securities  are  offered  by  means  of  an  underwritten  offering,  and  we  or  the  underwriters  determine  that  marketing  factors
require  a  limitation  of  the  number  of  securities  to  be  underwritten,  the  number  of  registrable  securities  that  may  be  included  in  the
underwriting should be reduced and allocated (i) first, to us and each holder in accordance with the terms of the Shareholders Agreement;
(ii) second, to investors in the private placements entered into in September 2020 (including the Hillhouse Entities) requesting inclusion
of their registrable securities in such registration statement on a pro rata basis based on the total number of registrable securities then held
by each such investor; and (iii) third, to other holders of registrable securities, if any.

Suspension of Registration. We may suspend the use of any registration statement for a period not exceeding thirty (30) consecutive
trading days, if we (i) determine that we would be required to make disclosure of material information in the registration statement that
we have a bona fide business purpose for preserving as confidential; (ii) determine that we must amend or supplement the registration
statement so that it does not include an untrue statement of a material fact or omit to state a material fact; or (iii) have experienced or are
experiencing some other material non-public event, the disclosure of which at such time would adversely affect us. However, we cannot
exercise  the  suspension  right  more  than  once  in  any  twelve  (12)  month  period  and  may  not  register  any  other  securities  during  such
suspension period.

Expenses.  We  will  bear  all  registration  expenses,  except  any  (i)  portions  of  fees  and  disbursements  of  counsel  for  the  Hillhouse
Entities  exceeding  US$30,000,  (ii)  underwriting  discounts  and  selling  commissions  applicable  to  sale  of  registrable  securities,  and
(iii) fees payable pursuant to the deposit agreement.

Ranking of Registration Rights.  Registration  rights  granted  to  the  Hillhouse  Entities  should  not  be  senior  to,  or  on  a  parity  with,

those granted to holders under the Shareholders Agreement.

Board Representation Rights. As long as the Hillhouse Entities continue to jointly beneficially own at least five percent (5.0%) of
our total issued and outstanding share capital, it is entitled to nominate and maintain one representative to our board of directors. We
should cause an individual jointly designated by the Hillhouse Entities to be appointed as the investor director with immediate effect no
later  than  the  fifteenth  business  day  after  receiving  written  notice  from  Hillhouse  Entities  or  such  later  date  on  which  we  receive
necessary shareholder approval.

Divestiture of Greater China Assets and Business Operations

On  February  6,  2024,  we  entered  into  definitive  agreements  to  divest  the  Greater  China  assets  and  business  operations  to  I-Mab
Hangzhou.  Pursuant  to  the  definitive  agreements,  we  transferred  100%  of  the  outstanding  equity  interest  in  I-Mab  Shanghai,  which
operates  our  business  in  China,  on  a  cash-free  and  debt-free  basis,  to  I-Mab  Hangzhou,  including  our  rights  to  the  Greater  China
portfolio,  to  I-Mab  Hangzhou  for  an  aggregate  consideration  of  the  RMB  equivalent  of  up  to  US$80  million,  contingent  on  the
achievement of certain future regulatory and sales-based milestone events. After the completion of the divestiture, we do not own any
rights  to  the  Greater  China  portfolio.  The  transaction  also  extinguishes  existing  repurchase  obligations  owed  by  a  wholly  owned
subsidiary  of  ours  in  the  amount  of  approximately  US$183  million.  However,  the  non-participating  shareholders  of  I-Mab  Hangzhou
have initiated legal proceedings against I-Mab Hong Kong and our company in connection with the aforementioned transaction. The total
amount of potential repurchase obligations owed to the non-participating shareholders upon the closing of the transaction is expected to
range from US$30 million to US$35 million.

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Employment Agreements and Indemnification Agreements

See “Item 6. Directors, Senior Management and Employees—A. Directors and Senior Management—Employment Agreements and

Indemnification Agreements.”

Share Option Grants

See “Item 6. Directors, Senior Management and Employees—B. Compensation—Share Incentive Plans.”

Other Transactions with Related Parties

In  August  2021,  we  entered  into  a  project  development  service  agreement  with  I-Mab  Hangzhou,  for  the  product  development
services we rendered for selected pipeline sub-licensed or assigned to I-Mab Hangzhou, including TJ301, TJM2 (excluding COVID-19
indication)  and  a  few  pre-clinical  programs  that  are  unessential  to  our  immune-oncology  focus.  In  2021,  2022  and  2023,  I-Mab
Hangzhou  paid  us  RMB52.4  million,  nil  and  nil  for  the  product  development  services  we  offered.  In  July  2021,  we  entered  into  a
biologics master services agreement with I-Mab Hangzhou. Under the framework of this biologics master services agreement, we entered
into series of work orders with respect to process development and manufacturing service for our drug assets in 2021, 2022 and 2023,
respectively.  Pursuant  to  the  work  orders  signed  with  I-Mab  Hangzhou  in  2022  and  2023,  I-Mab  Hangzhou  provided  us  with
development of chemistry, manufacturing and controls and manufacturing services for a total of RMB226.7 million (US$31.9 million).
We paid I-Mab Hangzhou RMB10.7 million, RMB46.2 million and RMB120.5 million (US$17.0 million) for the years ended December
31, 2021, 2022 and 2023, respectively.

In  December  2021,  we  entered  into  a  supplementary  sublicensing  agreement  with  I-Mab  Hangzhou,  pursuant  to  which  I-Mab
Hangzhou, as a sub-licensee of olamkicept (TJ301) in Greater China and Korea, agreed to pay US$3.0 million to us for the completion of
olamkicept (TJ301) Phase 2a study report. After receiving the milestone payment of RMB19.1 million (equivalent to US$3.0 million)
from I-Mab Hangzhou, we settled the payment of US$3.0 million with Ferring, as of December 31, 2023.

On July 16, 2022, I-Mab Hangzhou entered into a definitive financing agreement with a group of domestic investors in China to
raise the RMB equivalent of approximately US$46 million. On the same date, we, through our wholly owned subsidiary, entered into a
shareholders agreement with I-Mab Hangzhou and other domestic investors in I-Mab Hangzhou named therein. Upon the occurrence of
certain  triggering  events  as  specified  in  this  agreement,  including  but  not  limited  to  I-Mab  Hangzhou’s  failure  to  accomplish  certain
public offering conditions, we may be obligated to repurchase the equity held by other domestic investors in cash or in our stocks in the
period beyond 12 months.

C.

Interests of Experts and Counsel

Not applicable.

ITEM 8.

FINANCIAL INFORMATION

A. Consolidated Statements and Other Financial Information

We have appended consolidated financial statements filed as part of this annual report.

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Legal Proceedings

From  time  to  time  we  may  become  involved  in  legal  proceedings  or  be  subject  to  claims  arising  in  the  ordinary  course  of  our
business. We are not presently a party to any legal proceedings that, if determined adversely to us, would individually or taken together
have a material adverse effect on our business, results of operations, financial condition or cash flows. In April 2020, Tracon issued a
notice of disputes with respect to the agreements we entered into with it to co-develop TJD5 and bispecific antibodies, respectively. In
February 2021, we sent Tracon a notice to terminate the agreement we entered into with Tracon to co-develop TJD5, which would result
in a prespecified termination fee of US$9.0 million owing to Tracon. Accordingly, we have already accrued and recorded this termination
fee of US$9.0 million as administrative expenses in our consolidated financial statements for the year ended December 31, 2021. The
disputes were presented to a binding arbitration proceeding under the Rules of Arbitration of the International Chamber of Commerce
before an arbitration tribunal. On April 25, 2023, we announced positive outcomes in the arbitration. The arbitration award determined
that the agreement in relation to TJD5 has been terminated for a pre-agreed termination fee of $9.0 million plus interest payable pursuant
to  the  original  agreement,  and,  therefore  Tracon  has  no  rights  to  share  any  future  economics  with  I-Mab.  The  arbitration  award
completely denied Tracon’s damages claim of over US$200 million for any breach and awarded no damages to Tracon. The tribunal also
confirmed the termination of the agreement in relation to bispecific antibodies. Based on the arbitration award, I-Mab bears a portion of
Tracon’s  legal  fees  and  costs,  totaling  approximately  US$13.5  million,  which  was  recorded  as  administrative  expenses  in  our
consolidated financial statements for the year ended December 31, 2022. In July 2023, we paid the pre-agreed termination fee in relation
to TJD5 and the agreed-upon portion of Tracon’s legal fees and costs to Tracon. Due to Tracon’s wrong-doing during the confidential
arbitration process, we are pursuing a trade secret misappropriation lawsuit case against one of our competitors and seeking remedies,
including potentially substantial monetary damages.

Furthermore,  on  January  31,  2024,  Ningbo  Yanyuan  Yaoshang  Industry  Finance  Equity  Investment  Partnership  (Limited
Partnership),  or  Yanyuan  Yaoshang,  Ningbo  Yanchuang  Yaoshang  Yangming  Entrepreneurship  Investment  Partnership  (Limited
Partnership), or Yanyuan Yangming, Jiangsu Yanyuan Eastern Entrepreneurship Equity Investment Partnership (Limited Partnership), or
Yanyuan  Eastern,  Ningbo  Rongshun  Yanyuan  Entrepreneurship  Equity  Investment  Partnership  (Limited  Partnership),  or  Rongshun
Yanyuan,  and  Ningbo  Yanyuan  Innovation  Entrepreneurship  Equity  Investment  Partnership  (Limited  Partnership),  or  Yanyuan
Innovation,  (collectively  “Claimants”),  as  shareholders  of  I-Mab  Hangzhou,  commenced  arbitration  against  I-Mab  Hong  Kong  before
China International Economic and Trade Arbitration Commission Zhejiang Sub-Commission. The Claimants seek the following relief:
(1)  an  order  that  I-Mab  Hong  Kong  pays  Yanyuan  Yaoshang  the  equity  transfer  payment  and  premium  in  total  amount  of  US$2.67
million as of January 29, 2024; (2) an order that I-Mab Hong Kong pays Yanyuan Yangming the equity transfer payment and premium in
total amount of US$4.27 million as of January 29, 2024; (3) an order that I-Mab Hong Kong pays Yanyuan Eastern the equity transfer
payment and premium in total amount of US$3.74 million as of January 29, 2024; (4) an order that I-Mab Hong Kong pays Rongshun
Yanyuan the equity transfer payment and premium in total amount of US$3.34 million as of January 29, 2024; (5) an order that I-Mab
Hong Kong pays Yanyuan Innovation the equity transfer payment and premium in total amount of US$3.34 million as of January 29,
2024;  (6)  an  order  that  I-Mab  Hong  Kong  pays  all  arbitration  fees  and  property  preservation  fees  incurred  by  the  Claimants.  The
arbitration proceeding before the Zhejiang arbitration sub-commission is still pending. We have not yet received the notice of hearing and
are currently unable to predict the outcome of the arbitration.

Regardless  of  the  outcome,  litigation  or  arbitration  can  have  an  adverse  impact  on  us  because  of  defense  and  settlement  costs,
diversion of management resources and other factors. Enforcing a claim that a party illegally disclosed or misappropriated a trade secret
can be difficult, expensive and time-consuming, and the outcome is unpredictable.

Dividend Policy

Our board of directors has complete discretion on whether to pay dividends, subject to certain requirements of Cayman Islands law.
Even if our board of directors decides to pay dividends on our ordinary shares, the form, frequency and amount will depend upon our
future  operations  and  earnings,  capital  requirements  and  surplus,  general  financial  condition,  contractual  restrictions  and  other  factors
that our board of directors may deem relevant.

We do not have any present plan to pay any cash dividends on our ordinary shares in the foreseeable future. We currently intend to

retain most, if not all, of our available funds and any future earnings to operate and develop our business.

We  are  a  holding  company  incorporated  in  the  Cayman  Islands.  We  may  rely  on  dividends  from  our  subsidiaries  in  the  U.S.  and
China for our cash requirements, including any payment of dividends to our shareholders. PRC regulations may restrict the ability of our
PRC  subsidiary  to  pay  dividends  to  us.  See  “Item  4.  Information  on  the  Company—B.  Business  Overview—Regulation—PRC
Regulation—Regulations Relating to Foreign Exchange and the Dividend Distribution.”

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If we pay any dividends on our ordinary shares, we will pay those dividends which are payable in respect of the ordinary shares
underlying our ADSs to the depositary, as the registered holder of such ordinary shares, and the depositary then will pay such amounts to
our ADS holders in proportion to the ordinary shares underlying the ADSs held by such ADS holders, subject to the terms of the deposit
agreement,  including  the  fees  and  expenses  payable  thereunder.  Cash  dividends  on  our  ordinary  shares,  if  any,  will  be  paid  in  U.S.
dollars.

B. Significant Changes

We  have  not  experienced  any  significant  changes  since  the  date  of  our  audited  consolidated  financial  statements  included  in  this

annual report.

ITEM 9.

THE OFFER AND LISTING

A. Offering and Listing Details

Our  ADSs,  each  ten  (10)  ADSs  representing  twenty-three  (23)  ordinary  shares  of  ours,  have  been  listed  on  the  Nasdaq  Global

Market since January 17, 2020. Our ADSs trade under the symbol “IMAB.”

B. Plan of Distribution

Not applicable.

C. Markets

Our  ADSs,  each  ten  (10)  ADSs  representing  twenty-three  (23)  ordinary  shares  of  ours,  have  been  listed  on  the  Nasdaq  Global

Market since January 17, 2020. Our ADSs trade under the symbol “IMAB.”

D. Selling Shareholders

Not applicable.

E. Dilution

Not applicable.

F. Expenses of the Issue

Not applicable.

ITEM 10. ADDITIONAL INFORMATION

A. Share Capital

Not applicable.

B. Memorandum and Articles of Association

The following is a summary of the material provisions of the sixth amended and restated memorandum and articles of association of

our company and of the Companies Act, insofar as they relate to the material terms of our ordinary shares.

Objects of Our Company. Under our current memorandum and articles of association, the objects of our company are unrestricted
and we have the full power and authority to carry out any object not prohibited by the Companies Act or any other law of the Cayman
Islands.

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Ordinary Shares. Certificates representing the ordinary shares are issued in registered form and our ordinary shares are issued when
registered in our register of members. We may not issue shares to bearers. Our shareholders who are non-residents of the Cayman Islands
may freely hold and vote their shares.

Dividends. Our directors may from time to time declare dividends (including interim dividends) and other distributions on our shares
in issue and authorize payment of the same out of the funds of our company lawfully available therefor. In addition, our company may
declare  dividends  by  ordinary  resolution,  but  no  dividend  should  exceed  the  amount  recommended  by  our  directors.  Our  current
memorandum  and  articles  of  association  provide  that  dividends  may  be  declared  and  paid  out  of  the  funds  of  our  company  lawfully
available therefor. Under the laws of the Cayman Islands, our company may pay a dividend out of either profit or our share premium
account; provided that in no circumstances may a dividend be paid if this would result in our company being unable to pay its debts as
they fall due in the ordinary course of business.

Voting Rights. Voting at any meeting of shareholders is by show of hands unless a poll is demanded. A poll may be demanded by the
chairman  of  such  meeting  or  any  one  shareholder  or  shareholders  collectively  holding  not  less  than  5%  of  the  votes  attaching  to  the
shares present in person or by proxy.

An ordinary resolution to be passed at a meeting by the shareholders requires the affirmative vote of a simple majority of the votes
attaching to the ordinary shares cast at a meeting, while a special resolution requires the affirmative vote of not less than two-thirds of the
votes attaching to the ordinary shares cast at a meeting. A special resolution will be required for important matters such as a change of
name or making changes to our current memorandum and articles of association.

Alteration of Share Capital

We may from time to time by ordinary resolution:

● increase our share capital by such sum, to be divided into shares of such classes and amount, as the resolution prescribes;

● consolidate and divide all or any of our share capital into shares of a larger amount than its existing shares;

● subdivide  our  shares,  or  any  of  them,  into  shares  of  an  amount  smaller  than  that  fixed  by  the  memorandum  of  association,
provided that in the subdivision the proportion between the amount paid and the amount, if any, unpaid on each reduced share
should be the same as it was in case of the share from which the reduced share is derived; and

● cancel any shares that, at the date of the passing of the resolution, have not been taken or agreed to be taken by any person and

diminish the amount of its share capital by the amount of the shares so cancelled.

We may by special resolution, subject to any confirmation or consent required by the Companies Act, reduce our share capital and

any capital redemption reserve in any manner authorized by law.

General  Meetings  of  Shareholders.  As  a  Cayman  Islands  exempted  company,  we  are  not  obliged  by  the  Companies  Act  to  call
shareholders’ annual general meetings. Our current memorandum and articles of association provide that we may (but are not obliged to)
in each calendar year hold a general meeting as our annual general meeting in which case we should specify the meeting as such in the
notices calling it, and the annual general meeting will be held at such time and place as may be determined by our directors.

Shareholders’ general meetings may be convened by our directors (acting by a resolution of our board). Advance notice of at least
14 calendar days is required for any general shareholders’ meeting. A quorum required for any general meeting of shareholders consists
of,  at  the  time  when  the  meeting  proceeds  to  business,  one  or  more  of  our  shareholders  holding  shares  which  carry  in  aggregate  (or
representing  by  proxy)  not  less  than  one-third  of  all  votes  attaching  to  all  of  our  shares  in  issue  and  entitled  to  vote  at  such  general
meeting.

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The  Companies  Act  provides  shareholders  with  only  limited  rights  to  requisition  a  general  meeting,  and  does  not  provide
shareholders with any right to put any proposal before a general meeting. However, these rights may be provided in a company’s articles
of  association.  Our  current  articles  of  association  allow  our  shareholders  holding  in  aggregate  not  less  than  one-tenth  of  all  votes
attaching to all issued and outstanding shares of our company that as at the date of the deposit carry the right to vote at general meetings
of the company to requisition an extraordinary general meeting of our shareholders, in which case our board is obliged to convene an
extraordinary general meeting and to put the resolutions so requisitioned to a vote at such meeting. However, our current memorandum
and  articles  of  association  do  not  provide  our  shareholders  with  any  right  to  put  any  proposals  before  annual  general  meetings  or
extraordinary general meetings not called by such shareholders.

Transfer of Ordinary Shares. Subject to the restrictions in our current memorandum and articles of association as set out below, any
of our shareholders may transfer all or any of his or her ordinary shares by an instrument of transfer in the usual or common form or any
other form approved by our board of directors.

Our board of directors may, in its absolute discretion, decline to register any transfer of any ordinary share which is not fully paid up

or on which we have a lien. Our board of directors may also decline to register any transfer of any ordinary share unless:

● the instrument of transfer is lodged with us, accompanied by the certificate for the ordinary shares to which it relates and such

other evidence as our board of directors may reasonably require to show the right of the transferor to make the transfer;

● the instrument of transfer is in respect of only one class of shares;

● the instrument of transfer is properly stamped, if required;

● in the case of a transfer to joint holders, the number of joint holders to whom the ordinary share is to be transferred does not

exceed four; and

● a fee of such maximum sum as the Nasdaq Global Market may determine to be payable or such lesser sum as our directors may

from time to time require is paid to us in respect thereof.

If  our  directors  refuse  to  register  a  transfer,  they  should,  within  three  calendar  months  after  the  date  on  which  the  instrument  of

transfer was lodged with our company, send to each of the transferor and the transferee notice of such refusal.

The registration of transfers may, on ten calendar days’ notice being given by advertisement in such one or more newspapers, by
electronic means or by any other means in accordance with the rules of the Nasdaq Global Market be suspended and the register closed at
such times and for such periods as our board of directors may from time to time determine; provided, however, that the registration of
transfers should not be suspended nor the register closed for more than 30 calendar days in any calendar year.

Liquidation.  On  the  winding  up  of  our  company,  if  the  assets  available  for  distribution  amongst  our  shareholders  are  more  than
sufficient to repay the whole of the share capital at the commencement of the winding up, the surplus should be distributed amongst our
shareholders in proportion to the par value of the shares held by them at the commencement of the winding up, subject to a deduction
from those shares in respect of which there are monies due, of all monies payable to our company for unpaid calls or otherwise. If our
assets available for distribution are insufficient to repay the whole of the share capital, such assets will be distributed so that, as nearly as
may be, the losses are borne by our shareholders in proportion to the par value of the shares held by them.

Calls on Shares and Forfeiture of Shares. Subject to the terms of the allotment, our board of directors may from time to time make
calls upon shareholders in respect of any moneys unpaid on their shares in a notice served to such shareholders at least 14 calendar days
prior to the specified time or times of payment. The shares that have been called upon and remain unpaid are subject to forfeiture.

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Redemption, Repurchase and Surrender of Shares. We may issue shares on terms that such shares are subject to redemption, at our
option or at the option of the holders of these shares, on such terms and in such manner as may be determined, before the issue of such
shares, by our board of directors or by our shareholders by a special resolution. Our company may also repurchase any of our shares on
such terms and in such manner as have been approved by our board of directors or by an ordinary resolution of our shareholders or are
otherwise authorized by the articles of association. Under Cayman Islands law, any redemption or repurchase of shares by our company
may be made out of profits or out of the proceeds of a fresh issue of shares made for the purpose of such redemption or repurchase, or
out  of  capital  (including  share  premium  account  and  capital  redemption  reserve)  if  our  company  can,  immediately  following  such
payment, pay its debts as they fall due in the ordinary course of business. No such share may be redeemed or repurchased (a) unless it is
fully  paid  up,  (b)  if  such  redemption  or  repurchase  would  result  in  there  being  no  shares  outstanding,  or  (c)  if  our  company  has
commenced liquidation. In addition, our company may accept the surrender of any fully paid share for no consideration.

Variations of Rights of Shares. Whenever the capital of our company is divided into different classes the rights attached to any such
class may, subject to any rights or restrictions for the time being attached to any class, only be varied with the consent in writing of the
holders of all of the issued shares of that class or with the sanction of a special resolution passed at a separate meeting of the holders of
the shares of that class. The rights conferred upon the holders of the shares of any class issued with preferred or other rights should not,
subject  to  any  rights  or  restrictions  for  the  time  being  attached  to  the  shares  of  that  class,  be  deemed  to  be  varied  by,  inter  alia,  the
creation, allotment or issue of further shares ranking pari passu with or subsequent to them or the redemption or purchase of any shares
of any class by our company. The rights of the holders of shares should not be deemed to be varied by the creation or issue of shares with
preferred or other rights, including, without limitation, the creation of shares with enhanced or weighted voting rights.

Issuance  of  Additional  Shares.  Our  current  memorandum  and  articles  of  association  authorize  our  board  of  directors  to  issue

additional ordinary shares from time to time as our board of directors determines.

Our current memorandum and articles of association also authorize our board of directors to issue from time to time one or more
series of preferred shares and to determine, with respect to any series of preferred shares, the terms and rights of that series, including but
not limited to:

● the designation of the series;

● the number of preferred shares to constitute such series;

● the dividend rights, dividend rates, conversion rights, voting rights; and

● the rights and terms of redemption and liquidation preferences.

Issuance of these shares may dilute the voting power of holders of ordinary shares.

Inspection  of  Books  and  Records.  A  list  of  the  names  of  the  current  directors  and  alternate  directors  (if  applicable)  are  made
available by the Registrar of Companies of the Cayman Islands for inspection by any person on payment of a fee. Shareholders have no
general  right  under  Cayman  Islands  law  to  inspect  or  obtain  copies  of  our  list  of  shareholders  or  our  corporate  records  (save  for  our
memorandum and articles of association and our register of mortgages and charges). However, we intend to provide our shareholders
with annual audited financial statements.

Anti-Takeover Provisions. Some provisions of our current memorandum and articles of association may discourage, delay or prevent
a change of control of our company or management that shareholders may consider favorable, including provisions that authorize our
board of directors to issue preferred shares in one or more series and to designate the price, rights, preferences, privileges and restrictions
of such preferred shares.

However,  under  Cayman  Islands  law,  our  directors  may  only  exercise  the  rights  and  powers  granted  to  them  under  our  current
memorandum and articles of association for a proper purpose and for what they believe in good faith to be in the best interests of our
company.

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Exempted Company. We are an exempted company with limited liability incorporated under the Companies Act. The Companies Act
distinguishes between ordinary resident companies and exempted companies. Any company that is registered in the Cayman Islands but
conducts business mainly outside of the Cayman Islands may apply to be registered as an exempted company. The requirements for an
exempted company are essentially the same as for an ordinary company except that an exempted company:

● does not have to file an annual return of its shareholders with the Registrar of Companies;

● is not required to open its register of members for inspection;

● does not have to hold an annual general meeting;

● may issue shares with no par value;

● may obtain an undertaking against the imposition of any future taxation (such undertakings are usually given for 20 years in the

first instance);

● may register by way of continuation in another jurisdiction and be deregistered in the Cayman Islands;

● may register as a limited duration company; and

● may register as a segregated portfolio company.

“Limited liability” means that the liability of each shareholder is limited to the amount unpaid by the shareholder on the shares of the
company  held  by  such  shareholder  (except  in  exceptional  circumstances,  such  as  involving  fraud,  the  establishment  of  an  agency
relationship  or  an  illegal  or  improper  purpose  or  other  circumstances  in  which  a  court  may  be  prepared  to  pierce  or  lift  the  corporate
veil).

C. Material Contracts

We have not entered into any material contracts other than in the ordinary course of business and other than those described under
this  item,  in  “Item  4.  Information  on  the  Company,”  “Item  7.  Major  Shareholders  and  Related  Party  Transactions—B.  Related  Party
Transactions,” “Item 10. Additional Information—C. Material Contracts” or elsewhere in this annual report on Form 20-F.

Subscription Agreements with Certain Investors Other Than Hillhouse Entities

In September 2020, we entered into subscription agreements with various investors other than Hillhouse Entities. The subscription
agreements  are  of  the  same  form  and  provide  for  certain  investors’  rights,  such  as  registration  rights  and  anti-dilution  right.  Set  forth
below is a description of certain rights and restrictions thereof.

Mandatory Registration. We agree to file with the SEC a registration statement to register the resale of such investors’ registrable
securities,  which  include  ordinary  shares  issued  and  issuable  upon  exercise  of  warrants  issued  under  the  Subscription  Agreement,  on
Form F-3 or Form F-1, as applicable. We should have the registration statement declared effective by the SEC no later than ninety (90)
calendar days after the initial closing date, which period could be extended to one hundred and twenty (120) calendar days if the SEC
reviews  and  comments  on  the  registration  statement.  However,  if  the  SEC  prevents  inclusion  of  the  registrable  securities  in  the
registration statement pursuant to limitations under Rule 415 of the Securities Act, the number of registrable securities to be registered
for  each  selling  shareholder  named  in  the  registration  statement  should  be  reduced  pro  rata  among  all  such  selling  shareholders.  We
should maintain the continuous effectiveness of the registration statement for a period of ninety (90) days after its effectiveness or such
shorter period upon which such investors have notified us that their registrable securities have actually been sold.

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Piggyback  Registration.  We  agree  to  notify  such  investors  at  least  thirty  (30)  days  prior  to  filing  any  registration  statement  for
purposes  of  effecting  a  public  offering  of  ADSs  (excluding  registration  statements  relating  to  the  mandatory  registration  described
above). The Private Placement Investors has 20 days after receiving notice from us to notify us in writing of their desire to include their
registrable  securities  in  the  registration  statement.  However,  if  the  registrable  securities  in  such  registration  statement  are  offered  by
means  of  an  underwritten  offering,  and  we  or  the  underwriters  determine  that  marketing  factors  require  a  limitation  of  the  number  of
securities  to  be  underwritten,  the  number  of  registrable  securities  that  may  be  included  in  the  underwriting  should  be  reduced  and
allocated  (i)  first,  to  us  and  each  holder  in  accordance  with  the  terms  of  the  Shareholders  Agreement;  (ii)  second,  to  investors  in  the
private placements entered into in September 2020 requesting inclusion of their registrable securities in such registration statement on a
pro  rata  basis  based  on  the  total  number  of  registrable  securities  then  held  by  each  such  investor;  and  (iii)  third,  to  other  holders  of
registrable securities, if any.

Suspension of Registration. We may suspend the use of any registration statement for a period not exceeding thirty (30) consecutive
trading days, if we (i) determine that we would be required to make disclosure of material information in the registration statement that
we have a bona fide business purpose for preserving as confidential; (ii) determine that we must amend or supplement the registration
statement so that it does not include an untrue statement of a material fact or omit to state a material fact; or (iii) have experienced or are
experiencing some other material non-public event, the disclosure of which at such time would adversely affect us. However, we cannot
exercise  the  suspension  right  more  than  once  in  any  twelve  (12)  month  period  and  may  not  register  any  other  securities  during  such
suspension period.

Expenses. We will bear all registration expenses, except any (i) portions of fees and disbursements of counsel for such investors, and

(ii) underwriting discounts and selling commissions applicable to sale of registrable securities.

Ranking  of  Registration  Rights.  Registration  rights  granted  to  such  investors  should  not  be  senior  to,  or  on  a  parity  with,  those

granted to holders under the Shareholders Agreement.

D. Exchange Controls

See  “Item  4.  Information  on  the  Company—B.  Business  Overview—Regulation—PRC  Regulation—Regulations  Relating  to

Foreign Exchange and the Dividend Distribution.”

E. Taxation

The following summary of the material Cayman Islands, PRC and U.S. federal income tax consequences of an investment in the
ADSs  or  ordinary  shares  is  based  upon  laws  and  interpretations  thereof  in  effect  as  of  the  date  of  this  annual  report,  all  of  which  are
subject  to  change.  This  summary  does  not  deal  with  all  possible  tax  consequences  relating  to  an  investment  in  the  ADSs  or  ordinary
shares, such as the tax consequences under U.S. state and local tax laws or under the tax laws of jurisdictions other than the Cayman
Islands, China and the United States.

Cayman Islands Taxation

According  to  Harney  Westwood  &  Riegels,  our  Cayman  Islands  counsel,  the  Cayman  Islands  currently  levies  no  taxes  on
individuals or corporations based upon profits, income, gains or appreciation and there is no taxation in the nature of inheritance tax or
estate duty. There are no other taxes likely to be material to holders of our ADSs or ordinary shares levied by the government of the
Cayman Islands, except for stamp duties, which may be applicable on instruments executed in, or brought to, or produced before a court
of the Cayman Islands. The Cayman Islands has a double tax treaty with the United Kingdom entered into force in 2010 but otherwise is
not party to any double tax treaties. There are no exchange control regulations or currency restrictions in the Cayman Islands.

Payments of dividends and capital in respect of our shares will not be subject to taxation in the Cayman Islands and no withholding
will be required on the payment of a dividend or capital to any holder of the shares, nor will gains derived from the disposal of our shares
be subject to Cayman Islands income or corporation tax.

No stamp duty is payable in respect of the issue of shares by our company and no stamp duty is payable on transfers of shares of our
company provided our company does not hold any interest in land in the Cayman Islands and save that stamp duties may be applicable
on instruments executed in, or brought to, or produced before a court of the Cayman Islands.

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PRC Taxation

Under  the  PRC  Enterprise  Income  Tax  Law  and  its  implementation  rules,  an  enterprise  established  outside  China  with  “de  facto
management body” within China is considered as a Tax Resident Enterprise for PRC enterprise income tax purposes and is generally
subject  to  a  uniform  25%  enterprise  income  tax  rate  on  its  worldwide  income.  The  implementation  rules  define  the  term  “de  facto
management  body”  as  the  body  that  exercises  full  and  substantial  control  and  overall  management  over  the  business,  productions,
personnel, accounts and properties of an enterprise. In April 2009, the State Administration of Taxation issued the Circular of the State
Administration  of  Taxation  on  Issues  Relating  to  Identification  of  PRC-Controlled  Overseas  Registered  Enterprises  as  Resident
Enterprises  in  Accordance  With  the  De  Facto  Standards  of  Organizational  Management,  or  SAT  Circular  82,  which  provides  certain
specific criteria for determining whether the “de facto management body” of a PRC-controlled enterprise that is incorporated offshore is
located in China. Although this circular only applies to offshore enterprises controlled by PRC enterprises or PRC enterprise groups, not
those controlled by PRC individuals or foreigners, the criteria set forth in the circular may reflect the State Administration of Taxation’s
general position on how the “de facto management body” text should be applied in determining the tax resident status of all offshore
enterprises. According to SAT Circular 82, an offshore incorporated enterprise controlled by a PRC enterprise or a PRC enterprise group
is regarded as a PRC tax resident by virtue of having its “de facto management body” in China if all of the following conditions are met:
(i)  the  primary  location  of  the  day-to-day  operational  management  is  in  China;  (ii)  decisions  relating  to  the  enterprise’s  financial  and
human resource matters are made or are subject to approval by organizations or personnel located in China; (iii) the enterprise’s primary
assets, accounting books and records, company seals, and board and shareholder resolutions, are located or maintained in China; and (iv)
at least 50% of voting board members or senior executives habitually reside in China.

Our PRC counsel, JunHe LLP, is of the opinion that, based on its understanding of the current PRC Laws and Regulations, as I-Mab
does not meet all of the above conditions and given that neither I-Mab nor any of its PRC Subsidiaries has received any notice from the
PRC tax authorities confirming, directly or indirectly, that I-Mab is a PRC resident enterprise for PRC tax income purposes as of the date
of this annual report, I-Mab should not be considered as a PRC resident enterprise for PRC income tax purposes.

I-Mab is incorporated outside of China and it is not controlled by a PRC enterprise or PRC enterprise group. We have structured a
clear  management  guideline  in  place  to  segregate  the  policy  set  up  and  business  operating  execution  responsibilities  in  order  to
differentiate the effective control from our headquarter office and subsidiaries including record keeping and offshore work location plan.

I-Mab  is  a  company  incorporated  outside  the  PRC.  As  a  holding  company,  its  key  assets  are  its  ownership  interests  in  its
subsidiaries, and its key assets are located, and its records (including the resolutions of its board of directors and the resolutions of its
shareholders) are maintained, outside China. However, the tax resident status of an enterprise is subject to determination by the PRC tax
authorities and uncertainties remain with respect to the interpretation of the term “de facto management body.” We cannot guarantee you
that PRC tax authorities will not take a different view.

If  the  PRC  tax  authorities  determine  that  I-Mab  is  a  PRC  resident  enterprise  for  enterprise  income  tax  purposes,  our  worldwide
income  could  be  subject  to  25%  enterprise  income  tax;  and  any  dividends  payable  to  non-resident  enterprise  holders  of  our  common
shares or ADSs may be treated as income derived from sources within China and therefore, subject to a 10% withholding tax (or 20% in
the case of non-resident individual holders) unless an applicable income tax treaty provides otherwise. In addition, capital gains realized
by non-resident enterprise shareholders (including our ADS holders) upon the disposition of our common shares or ADSs may be treated
as income derived from sources within PRC and therefore, subject to 10% income tax (or 20% in the case of non-resident individual
shareholders or ADS holders) unless an applicable income tax treaty provides otherwise. It is unclear whether non-PRC shareholders of
our company would be able to claim the benefits of any tax treaties between their country of tax residence and the PRC in the event that
we are treated as a PRC resident enterprise.

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United States Federal Income Tax Considerations

The following discussion is a summary of U.S. federal income tax considerations relating to the ownership and disposition of our
ADSs or ordinary shares by a U.S. Holder (as defined below) that acquires our ADSs or ordinary shares and holds our ADSs or ordinary
shares  as  “capital  assets”  (generally,  property  held  for  investment)  under  the  U.S.  Internal  Revenue  Code  of  1986  as  amended.  This
discussion  is  based  upon  existing  U.S.  federal  income  tax  law,  which  is  subject  to  differing  interpretations  or  change,  possibly  with
retroactive  effect.  There  can  be  no  assurance  that  the  Internal  Revenue  Service  or  a  court  will  not  take  a  contrary  position.  This
discussion does not address the U.S. federal estate, gift, Medicare, and minimum tax considerations, or any state, local, and non-U.S. tax
considerations, relating to the ownership or disposition of our ADSs or ordinary shares. This discussion, moreover, does not discuss all
aspects of U.S. federal income taxation that may be important to particular investors in light of their individual investment circumstances
or to investors subject to special tax situations such as:

● banks and other financial institutions;

● insurance companies;

● pension plans;

● cooperatives;

● regulated investment companies;

● real estate investment trusts;

● broker-dealers;

● traders in securities that elect to use a mark-to-market method of accounting;

● certain former U.S. citizens or long-term residents;

● tax-exempt entities (including private foundations);

● investors who are not U.S. Holders;

● investors who own (directly, indirectly or constructively) 10% or more of our stock (by vote or value);

● investors who acquire their ADSs or ordinary shares pursuant to any employee share option or otherwise as compensation;

● investors  that  will  hold  their  ADSs  or  ordinary  shares  as  part  of  a  straddle,  hedge,  conversion,  constructive  sale  or  other

integrated transaction for U.S. federal income tax purposes; or

● investors that have a functional currency other than the U.S. dollar;

all of whom may be subject to tax rules that differ significantly from those discussed below. Each U.S. Holder is urged to consult its tax
advisor  regarding  the  U.S.  federal,  state,  local  and  non-U.S.  income  and  other  tax  considerations  of  an  investment  in  our  ADSs  or
ordinary shares.

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General

For purposes of this discussion, a “U.S. Holder” is a beneficial owner of our ADSs or ordinary shares that is, for U.S. federal income
tax purposes, (i) an individual who is a citizen or resident of the United States, (ii) a corporation (or other entity treated as a corporation
for U.S. federal income tax purposes) created in, or organized under the law of, the United States or any state thereof or the District of
Columbia, (iii) an estate the income of which is includible in gross income for U.S. federal income tax purposes regardless of its source,
or  (iv)  a  trust  (A)  the  administration  of  which  is  subject  to  the  primary  supervision  of  a  U.S.  court  and  which  has  one  or  more  U.S.
persons who have the authority to control all substantial decisions of the trust or (B) that has otherwise validly elected to be treated as a
U.S. person under the U.S. Internal Revenue Code of 1986 as amended.

If a partnership (or other entity treated as a partnership for U.S. federal income tax purposes) is a beneficial owner of our ADSs or
ordinary shares, the tax treatment of a partner in the partnership will generally depend upon the status of the partner and the activities of
the  partner  and  the  partnership.  Partnerships  holding  our  ADSs  or  ordinary  shares  and  their  partners  are  urged  to  consult  their  tax
advisors regarding an investment in our ADSs or ordinary shares.

For U.S. federal income tax purposes, it is generally expected that a U.S. Holder of ADSs will be treated as the beneficial owner of
the underlying shares represented by the ADSs. The remainder of this discussion assumes that a U.S. Holder of our ADSs will be treated
as the beneficial owner of the underlying shares represented by the ADSs. Accordingly, deposits or withdrawals of ordinary shares for
ADSs will generally not be subject to U.S. federal income tax.

Passive Foreign Investment Company Considerations

A  non-U.S.  corporation,  such  as  our  company,  will  be  classified  as  a  passive  foreign  investment  company,  or,  or  PFIC,  for  U.S.
federal income tax purposes for any taxable year if either (i) 75% or more of its gross income for such year consists of certain types of
“passive”  income  or  (ii)  50%  or  more  of  the  value  of  its  assets  (generally  determined  on  the  basis  of  a  quarterly  average)  during
such year is attributable to assets that produce or are held for the production of passive income. For this purpose, cash and assets readily
convertible into cash are each categorized as a passive asset and the company’s goodwill and other unbooked intangibles are taken into
account. Passive income generally includes, among other things, dividends, interest, rents, royalties, and gains from the disposition of
passive assets. We will be treated as owning a proportionate share of the assets and earning a proportionate share of the income of any
other corporation in which we own, directly or indirectly, 25% or more (by value) of the stock.

Based upon the nature and composition of our assets (in particular, the retention of substantial amounts of cash and investments),
and the market price of our ADSs, we believe that we were a PFIC for the taxable year ended December 31, 2023 and we will likely be a
PFIC for our current taxable year unless the market price of our ADSs significantly increases and/or we invest a substantial amount of
the cash and other passive assets we hold in assets that produce or are held for the production of active income.

If  we  are  a  PFIC  for  any  year  during  which  a  U.S.  Holder  holds  our  ADSs  or  ordinary  shares,  we  generally  will  continue  to  be
treated as a PFIC for all succeeding years during which such U.S. Holder holds our ADSs or ordinary shares. However, if we cease to be
a PFIC, provided that you have not made a mark-to-market election, as described below, you may avoid some of the adverse effects of
the PFIC regime by making a “deemed sale” election with respect to the ADSs or ordinary shares, as applicable. If such election is made,
you will be deemed to have sold our ADSs or ordinary shares you hold at their fair market value and any gain from such deemed sale
would be subject to the rules described below under “Passive Foreign Investment Company Rules.” After the deemed sale election, so
long as we do not become a PFIC in a subsequent taxable year, your ADSs or ordinary shares with respect to which such election was
made  will  not  be  treated  as  shares  in  a  PFIC  and  you  will  not  be  subject  to  the  rules  described  below  with  respect  to  any  “excess
distribution” you receive from us or any gain from an actual sale or other disposition of the ADSs or ordinary shares. The rules dealing
with  deemed  sale  elections  are  very  complex.  Each  U.S.  Holder  should  consult  its  tax  advisors  regarding  the  possibility  and
considerations of making a deemed sale election.

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Dividends

Subject  to  the  discussion  below  under  “—Passive  Foreign  Investment  Company  Rules,”  any  cash  distributions  (including  the
amount of any tax withheld) paid on our ADSs or ordinary shares out of our current or accumulated earnings and profits, as determined
under U.S. federal income tax principles, will generally be includible in the gross income of a U.S. Holder as dividend income on the day
actually or constructively received by the U.S. Holder. Because we do not intend to determine our earnings and profits on the basis of
U.S.  federal  income  tax  principles,  any  distribution  we  pay  will  generally  be  reported  as  a  “dividend”  for  U.S.  federal  income  tax
purposes.  Dividends  received  on  our  ADSs  or  ordinary  shares  will  not  be  eligible  for  the  dividends  received  deduction  allowed  to
corporations in respect of dividends received from U.S. corporations.

A non-corporate U.S. Holder will generally be subject to tax on dividend income from a “qualified foreign corporation” at a lower
applicable capital gains rate rather than the marginal tax rates generally applicable to ordinary income provided that certain conditions
are  satisfied,  including  that  (1)  our  ADSs  or  ordinary  shares  on  which  the  dividends  are  paid  are  readily  tradable  on  an  established
securities market in the United States, or in the event that we are deemed to be a PRC resident enterprise under the PRC tax law, we are
eligible for the benefits of the United States-PRC income tax treaty; (2) we are neither a PFIC nor treated as such with respect to a U.S.
Holder for the taxable year in which the dividend is paid and the preceding taxable year, and (3) certain holding period requirements are
met. Our ADSs (but not our ordinary shares) are listed on the Nasdaq Global Market and is considered readily tradable on an established
securities market in the United States. Since we do not expect that our ordinary shares will be listed on an established securities market,
we do not believe that dividends that we pay on our ordinary shares that are not represented by ADSs will meet the conditions required
for  the  reduced  tax  rate.  There  can  be  no  assurance,  however,  that  our  ADSs  will  continue  to  be  considered  readily  tradable  on  an
established securities market in later years.

In the event that we are deemed to be a PRC resident enterprise under the PRC Enterprise Income Tax Law, we may be eligible for
the  benefits  of  the  United  States-PRC  income  tax  treaty  and  in  that  case  we  would  be  treated  as  a  qualified  foreign  corporation  with
respect to dividends paid on our ordinary shares or ADSs. Each non-corporate U.S. Holder is advised to consult its tax advisors regarding
the availability of the reduced tax rate applicable to qualified dividend income for any dividends we pay with respect to our ADSs or
ordinary shares.

Dividends will generally be treated as income from foreign sources for U.S. foreign tax credit purposes and will generally constitute
passive category income. In the event that we are deemed to be a PRC resident enterprise under the PRC Enterprise Income Tax Law, a
U.S. Holder may be subject to PRC withholding taxes on dividends paid on our ADSs or ordinary shares. See “—PRC Taxation” above.
In that case, depending on the U.S. Holder’s individual facts and circumstances, a U.S. Holder may be eligible, subject to a number of
complex limitations, to claim a foreign tax credit not in excess of any applicable treaty rate in respect of any foreign withholding taxes
imposed  on  dividends  received  on  our  ADSs  or  ordinary  shares.  A  U.S.  Holder  who  does  not  elect  to  claim  a  foreign  tax  credit  for
foreign tax withheld may instead claim a deduction, for U.S. federal income tax purposes, in respect of such withholding, but only for
a year in which such holder elects to do so for all creditable foreign income taxes. The rules governing the foreign tax credit are complex
and their outcome depends in large part on the U.S. Holder’s individual facts and circumstances. Accordingly, U.S. Holders are urged to
consult their tax advisors regarding the availability of the foreign tax credit under their particular circumstances.

As discussed above, we believe that we were a PFIC for the taxable year ended December 31, 2023, and we will likely be classified
as a PFIC for our current taxable year. U.S. Holders are urged to consult their tax advisors regarding the availability of the reduced rate
of taxation on dividends with respect to our ADSs or ordinary shares under their particular circumstances.

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Sale or Other Disposition of ADSs or Ordinary Shares

Subject  to  the  discussion  below  under  “—Passive  Foreign  Investment  Company  Rules,”  a  U.S.  Holder  will  generally  recognize
capital  gain  or  loss  upon  the  sale  or  other  disposition  of  ADSs  or  ordinary  shares  in  an  amount  equal  to  the  difference  between  the
amount realized upon the disposition and the holder’s adjusted tax basis in such ADSs or ordinary shares. Any capital gain or loss will be
long-term if the ADSs or ordinary shares have been held for more than one year and will generally be U.S. source gain or loss for U.S.
foreign tax credit purposes. Long-term capital gain of non-corporate U.S. Holders is generally eligible for a reduced rate of taxation. The
deductibility  of  a  capital  loss  may  be  subject  to  limitations.  In  the  event  that  we  are  treated  as  a  PRC  resident  enterprise  under  the
Enterprise Income Tax Law and gain from the disposition of the ADSs or ordinary shares is subject to tax in China, a U.S. Holder that is
eligible  for  the  benefits  of  the  United  States-PRC  income  tax  treaty  may  elect  to  treat  the  gain  as  PRC  source  income.  Pursuant  to
applicable regulations, however, if a U.S. Holder is not eligible for the benefits of the United States-PRC income tax treaty or does not
elect to apply the United States-PRC income tax treaty, then such holder may not be able to claim a foreign tax credit arising from any
PRC tax imposed on the disposition of ADSs or ordinary shares. The rules regarding foreign tax credits and deduction of foreign taxes
are complex. U.S. Holders should consult their tax advisors regarding the availability of a foreign tax credit or deduction in light of their
particular circumstances, including their eligibility for benefits under the United States-PRC income tax treaty and the potential impact of
applicable regulations.

As discussed above, we believe that we were a PFIC for the taxable year ended December 31, 2023, and we will likely be classified
as a PFIC for our current taxable year. U.S. Holders are urged to consult their tax advisors regarding the tax considerations of the sale or
other disposition of our ADSs or ordinary shares under their particular circumstances.

Passive Foreign Investment Company Rules

As discussed above, we believe that we were a PFIC for the taxable year ended December 31, 2023, and we will likely be classified
as a PFIC for our current taxable year. If we are classified as a PFIC for any taxable year during which a U.S. Holder holds our ADSs or
ordinary  shares,  and  unless  the  U.S.  Holder  makes  a  mark-to-market  election  (as  described  below),  the  U.S.  Holder  will  generally  be
subject to special tax rules that have a penalizing effect, regardless of whether we remain a PFIC, on (i) any excess distribution that we
make  to  the  U.S.  Holder  (which  generally  means  any  distribution  paid  during  a  taxable  year  to  a  U.S.  Holder  that  is  greater  than
125 percent of the average annual distributions paid in the three preceding taxable years or, if shorter, the U.S. Holder’s holding period
for the ADSs or ordinary shares), and (ii) any gain realized on the sale or other disposition (including, under certain circumstances, a
pledge) of ADSs or ordinary shares. Under the PFIC rules:

● the excess distribution or gain will be allocated ratably over the U.S. Holder’s holding period for the ADSs or ordinary shares;

● the  amount  allocated  to  the  current  taxable  year  and  any  taxable  years  in  the  U.S.  Holder’s  holding  period  prior  to  the  first

taxable year in which we are classified as a PFIC, or a pre-PFIC year, will be taxable as ordinary income; and

● the amount allocated to each prior taxable year, other than a pre-PFIC year, will be subject to tax at the highest tax rate in effect
for individuals or corporations, as appropriate, for that year, increased by an additional tax equal to the interest on the resulting
tax deemed deferred with respect to each such taxable year.

If we are a PFIC for any taxable year during which a U.S. Holder holds our ADSs or ordinary shares and any of our subsidiaries is
also a PFIC, which we refer to as a lower-tier PFIC, such U.S. Holder would be treated as owning a proportionate amount (by value) of
the  shares  of  such  lower-tier  PFIC  for  purposes  of  the  application  of  these  rules.  U.S.  Holders  are  urged  to  consult  their  tax  advisors
regarding the application of the PFIC rules to any of our subsidiaries.

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As an alternative to the foregoing rules, a U.S. Holder of “marketable stock” (as defined below) in a PFIC may make a mark-to-
market  election  with  respect  to  such  stock,  provided  that  such  stock  is  regularly  traded  on  a  qualified  exchange  or  other  market,  as
defined in the applicable United States Treasury regulations. For those purposes, our ADSs, but not our ordinary shares, are listed on the
Nasdaq  Global  Market,  which  is  a  qualified  exchange.  We  anticipate  that  our  ADSs  should  qualify  as  being  regularly  traded,  but  no
assurances may be given in this regard. If a U.S. Holder makes this election, the holder will generally (i) include as ordinary income for
each taxable year that we are a PFIC the excess, if any, of the fair market value of ADSs held at the end of the taxable year over the
adjusted tax basis of such ADSs and (ii) deduct as an ordinary loss the excess, if any, of the adjusted tax basis of the ADSs over the fair
market  value  of  such  ADSs  held  at  the  end  of  the  taxable  year,  but  such  deduction  will  only  be  allowed  to  the  extent  of  the  amount
previously included in income as a result of the mark-to-market election. The U.S. Holder’s adjusted tax basis in the ADSs would be
adjusted to reflect any income or loss resulting from the mark-to-market election. If a U.S. Holder makes a mark-to-market election in
respect of a corporation classified as a PFIC and such corporation ceases to be classified as a PFIC, the holder will not be required to take
into account the gain or loss described above during any period that such corporation is not classified as a PFIC. If a U.S. Holder makes a
mark-to-market election, any gain such U.S. Holder recognizes upon the sale or other disposition of our ADSs in a year when we are a
PFIC will be treated as ordinary income and any loss will be treated as ordinary loss, but such loss will only be treated as ordinary loss to
the extent of the net amount previously included in income as a result of the mark-to-market election. If a U.S. Holder makes a mark-to-
market election it will be effective for the taxable year for which the election is made and all subsequent taxable years unless the ADSs
are no longer treated as marketable stock or the Internal Revenue Service consents to the revocation of the election.

Because  a  mark-to-market  election  cannot  technically  be  made  for  any  lower-tier  PFICs  that  we  may  own,  a  U.S.  Holder  may
continue to be subject to the PFIC rules with respect to such U.S. Holder’s indirect interest in any investments held by us that are treated
as an equity interest in a PFIC for U.S. federal income tax purposes.

We do not intend to provide information necessary for U.S. Holders to make qualified electing fund elections which, if available,

would result in tax treatment different from the general tax treatment for PFICs described above.

If a U.S. Holder owns our ADSs or ordinary shares during any taxable year that we are a PFIC, the holder must generally file an
annual  IRS  Form  8621.  Each  U.S.  Holder  is  urged  to  consult  its  tax  advisor  concerning  the  U.S.  federal  income  tax  consequences  of
purchasing, holding and disposing ADSs or ordinary shares if we are or become a PFIC, including the possibility of making a mark-to-
market election.

F. Dividends and Paying Agents

Not applicable.

G. Statement by Experts

Not applicable.

H. Documents on Display

We  are  subject  to  periodic  reporting  and  other  informational  requirements  of  the  Exchange  Act  as  applicable  to  foreign  private
issuers, and are required to file reports and other information with the SEC. Specifically, we are required to file annually an annual report
on Form 20-F within four months after the end of each fiscal year, which is December 31. All information filed with the SEC can be
obtained over the internet at the SEC’s website at www.sec.gov. You can request copies of documents, upon payment of a duplicating fee,
by writing to the SEC. As a foreign private issuer, we are exempt from the rules under the Exchange Act prescribing the furnishing and
content of quarterly reports and proxy statements, and officers, directors and principal shareholders are exempt from the reporting and
short-swing profit recovery provisions contained in Section 16 of the Exchange Act.

We will furnish Citibank, N.A., the depositary of our ADSs, with our annual reports, which will include a review of operations and
annual audited consolidated financial statements prepared in conformity with U.S. GAAP, and all notices of shareholders’ meetings and
other reports and communications that are made generally available to our shareholders. The depositary will make such notices, reports
and  communications  available  to  holders  of  ADSs  and,  upon  our  request,  will  mail  to  all  record  holders  of  ADSs  the  information
contained in any notice of a shareholders’ meeting received by the depositary from us.

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I.

Subsidiary Information

Not applicable.

J. Annual Report to Security Holders

Not applicable.

ITEM 11. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market Risks

Interest and Credit Risk

We had cash, cash equivalents, short-term investments and long-term restricted cash of RMB2,343.6 million (US$330.1 million) as
of  December  31,  2023.  Our  exposure  to  interest  rate  risk  primarily  relates  to  the  interest  income  generated  by  excess  cash,  which  is
mostly held in interest-bearing bank deposits. Interest-earning instruments carry a degree of interest rate risk. We have not been exposed
to material risks due to changes in interest rates, and we have not used any derivative financial instruments to manage our interest risk
exposure.

Our credit risk is primarily attributable to the carrying amounts of cash, cash equivalents and long-term restricted cash. The carrying
amounts of cash, cash equivalents and long-term restricted cash represent the maximum amount of loss due to credit risk. We mainly
place or invest cash, cash equivalents and long-term restricted cash with state-owned or reputable financial institutions in the PRC, and
reputable financial institutions outside of the PRC. We do not believe that our cash, cash equivalents and long-term restricted cash have
significant risk of default or illiquidity, and we will continually monitor the credit worthiness of these financial institutions. While we
believe  our  cash,  cash  equivalents  and  long-term  restricted  cash  do  not  contain  excessive  risk,  future  investments  may  be  subject  to
adverse changes in market value.

Foreign Exchange Risk

Most of our revenues are denominated in U.S. dollars, a significant portion of our expenses are denominated in U.S. dollars, a small
portion  of  our  expenses  are  denominated  in  RMB,  and  most  of  our  assets  and  liabilities  are  denominated  in  U.S.  dollars.  We  do  not
believe  that  we  currently  have  any  significant  direct  foreign  exchange  risk  and  have  not  used  any  derivative  financial  instruments  to
hedge exposure to such risk. Although our exposure to foreign exchange risks should be limited in general, the value of your investment
in our ADSs will be affected by the exchange rate between U.S. dollar and other currencies of the jurisdictions where our contractors
locate, because we need to incur expenses in local currencies, while our ADSs will be traded in U.S. dollars.

Other currencies have fluctuated against the U.S. dollar, at times significantly and unpredictably. It is difficult to predict how market

forces or government policies may impact the exchange rate between the U.S. dollar and other currencies in the future.

To the extent that we need to convert U.S. dollars into other currencies for our operations, appreciation of these currencies against
the U.S. dollar would have an adverse effect on the converted amount of the other currencies. Conversely, if we decide to convert other
currencies  into  U.S.  dollars  for  the  purpose  of  making  payments  for  dividends  on  our  ordinary  shares  or  ADSs  or  for  other  business
purposes, appreciation of the U.S. dollar against these currencies would have a negative effect on the U.S. dollar amounts available to us.
A decline in the value of other currencies against the U.S. dollar could reduce the U.S. dollar equivalent of our financial results, the value
of your investment in our company and the dividends that we may pay in the future, if any, all of which may have a material adverse
effect on the prices of our ADS.

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ITEM 12. DESCRIPTION OF SECURITIES OTHER THAN EQUITY SECURITIES

A. Debt Securities

Not applicable.

B. Warrants and Rights

Not applicable.

C. Other Securities

Not applicable.

D. American Depositary Shares

Fees and Charges Our ADS Holders May Have to Pay

The  depositary  of  our  ADS  facility,  Citibank,  N.A.,  charges  the  following  fees  for  the  services  performed  under  the  terms  of  the

deposit agreement:

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ADS Fees

The following ADS fees are payable under the terms of the Deposit Agreement:

Service

Rate

By Whom Paid

(1) Issuance of ADSs ( e.g., an issuance
upon  a  deposit  of  Shares,  upon  a
change  in  the  ADS(s)-to-Share(s)
ratio,  or  for  any  other  reason),
excluding  issuances  as  a  result  of
distributions  described  in  paragraph
(4) below.

(2) Cancellation  of  ADSs  (  e.g.,  a
cancellation  of  ADSs  for  Delivery
of  deposited  Shares,  upon  a  change
in  the  ADS(s)-to-Share(s)  ratio,  or
for any other reason).

(3) Distribution  of  cash  dividends  or
other  cash  distributions  (  e.g.,  upon
a 
and  other
rights 
sale  of 
entitlements).

(4) Distribution of ADSs pursuant to (i)
stock  dividends  or  other  free  stock
distributions,  or  (ii)  an  exercise  of
rights to purchase additional ADSs.

(5) Distribution  of  securities  other  than
ADSs  or 
to  purchase
rights 
additional  ADSs  (  e.g.,  spin-off
shares).

(6) ADS Services.

(7) Registration of ADS Transfers ( e.g.,
upon a registration of the transfer of
registered ownership of ADSs, upon
a  transfer  of  ADSs  into  DTC  and
vice versa, or for any other reason).

conversion 

(8) Conversion  of  ADSs  of  one  series
for  ADSs  of  another  series  (  e.g.,
Partial
upon 
Full
Entitlement  ADSs 
Entitlement  ADSs, 
upon
conversion  of  Restricted  ADSs  into
freely  transferable  ADSs,  and  vice
versa ).

for 
or 

of 

Up  to  US$5.00  per  100  ADSs  (or  fraction
thereof) issued.

Person for whom ADSs are issued.

Up  to  US$5.00  per  100  ADSs  (or  fraction
thereof) cancelled.

Person for whom ADSs are being cancelled.

Up  to  US$5.00  per  100  ADSs  (or  fraction
thereof) held.

Person to whom the distribution is made.

Up  to  US$5.00  per  100  ADSs  (or  fraction
thereof) held.

Person to whom the distribution is made.

Up  to  US$5.00  per  100  ADSs  (or  fraction
thereof) held.

Person to whom the distribution is made.

Up  to  US$5.00  per  100  ADSs  (or  fraction
thereof) held on the applicable record date(s)
established by the Depositary.

Person  holding  ADSs  on  the  applicable
record date(s) established by the Depositary.

Up  to  US$5.00  per  100  ADSs  (or  fraction
thereof) transferred.

Person  for  whom  or  to  whom  ADSs  are
transferred.

Up  to  US$5.00  per  100  ADSs  (or  fraction
thereof) converted.

Person  for  whom  ADSs  are  converted  or  to
whom the converted ADSs are delivered.

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Charges

An ADS holder will also be responsible for the following ADS charges:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

taxes (including applicable interest and penalties) and other governmental charges;

such registration fees as may from time to time be in effect for the registration of Shares or other Deposited Securities on
the share register and applicable to transfers of Shares or other Deposited Securities to or from the name of the Custodian,
the Depositary or any nominees upon the making of deposits and withdrawals, respectively;

such cable, telex and facsimile transmission and delivery expenses as are expressly provided in the Deposit Agreement to
be  at  the  expense  of  the  person  depositing  Shares  or  withdrawing  Deposited  Property  or  of  the  Holders  arid  Beneficial
Owners of ADSs;

in  connection  with  the  conversion  of  Foreign  Currency,  the  fees,  expenses,  spreads,  taxes  and  other  charges  of  the
Depositary and/or conversion service providers (which may be a division, branch or Affiliate of the Depositary). Such fees,
expenses, spreads, taxes, and other charges should be deducted from the Foreign Currency;

any  reasonable  and  customary  out-of-pocket  expenses  incurred  in  such  conversion  and/or  on  behalf  of  the  Holders  and
Beneficial Owners in complying with currency exchange control or other governmental requirements; and

the  fees,  charges,  costs  and  expenses  incurred  by  the  Depositary,  the  Custodian,  or  any  nominee  in  connection  with  the
ADR program.

The above fees and charges may at any time and from time to time be changed by agreement between the Depositary and us.

Fees and Other Payments Made by the Depositary to Us

Our depositary anticipates to reimburse us for certain expenses we incur in respect of the ADR program established pursuant to the
Deposit  Agreement,  by  making  available  a  portion  of  the  ADS  fees  charged  in  respect  of  the  ADR  program  or  otherwise,  upon  such
terms  and  conditions  as  the  Depositary  agrees  with  us  from  time  to  time.  As  of  the  date  of  this  annual  report,  we  have  received
approximately US$3.7 million from the depositary.

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ITEM 13. DEFAULTS, DIVIDEND ARREARAGES AND DELINQUENCIES

PART II

None.

ITEM 14. MATERIAL MODIFICATIONS TO THE RIGHTS OF SECURITY HOLDERS AND USE OF PROCEEDS

See  “Item  10.  Additional  Information—B.  Memorandum  and  Articles  of  Association”  for  a  description  of  the  rights  of  securities

holders, which remain unchanged.

ITEM 15. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our chief executive officer and chief financial officer, has performed an evaluation of the
effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Exchange Act) as of the end of the period
covered by this report, as required by Rule 13a-15(b) under the Exchange Act.

Based upon that evaluation, our management has concluded that, as of December 31, 2023, our disclosure controls and procedures
were effective in ensuring that the information required to be disclosed by us in the reports that we file and furnish under the Exchange
Act  was  recorded,  processed,  summarized  and  reported,  within  the  time  periods  specified  in  the  SEC’s  rules  and  forms,  and  that  the
information  required  to  be  disclosed  by  us  in  the  reports  that  we  file  or  submit  under  the  Exchange  Act  is  accumulated  and
communicated to our management, including our chief executive officer and chief financial officer, to allow timely decisions regarding
required disclosure.

Management’s Annual Report on Internal Control over Financial Reporting

Our  management  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial  reporting  as  defined  in
Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended. Our internal control over financial reporting is a
process  designed  to  provide  reasonable  assurance  regarding  the  reliability  of  our  financial  reporting  and  the  preparation  of  financial
statements for external purposes in accordance with Generally Accepted Accounting Principles (GAAP) in the United States of America
and includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly
reflect the transactions and dispositions of the assets of our company; (2) provide reasonable assurance that transactions are recorded as
necessary to permit preparation of consolidated financial statements in accordance with GAAP, and that receipts and expenditures of our
company are being made only in accordance with authorizations of our management and directors; and (3) provide reasonable assurance
regarding prevention or timely detection of the unauthorized acquisition, use or disposition of our company’s assets that could have a
material effect on the consolidated financial statements.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.  Also,
projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of
changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

As  required  by  Section  404  of  the  Sarbanes-Oxley  Act  of  2002  and  related  rules  as  promulgated  by  the  SEC,  our  management
including our chief executive officer and chief financial officer assessed the effectiveness of internal control over financial reporting as of
December  31,  2023  using  the  criteria  set  forth  in  the  report  “Internal  Control—Integrated  Framework  (2013)”  published  by  the
Committee  of  Sponsoring  Organizations  of  the  Treadway  Commission.  Based  on  this  evaluation,  management  concluded  that  our
internal control over financial reporting was effective as of December 31, 2023.

Attestation Report of the Registered Public Accounting Firm

The effectiveness of internal control over financial reporting as of December 31, 2023 has been audited by PricewaterhouseCoopers
Zhong  Tian  LLP,  an  independent  registered  public  accounting  firm,  who  has  also  audited  our  consolidated  financial  statements  for
the year ended December 31, 2023.

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Changes in Internal Control over Financial Reporting

There were no changes in our internal controls over financial reporting that occurred during the period covered by this annual report

on Form 20-F that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

ITEM 16A. AUDIT COMMITTEE FINANCIAL EXPERT

Our  board  of  directors  has  determined  that  Conor  Chia-hung  Yang,  a  member  of  our  audit  committee  and  independent  director
(under the standards under Rule 5605(c)(2) of the Nasdaq Stock Market Rules and Rule 10A-3 under the Securities Exchange Act of
1934), is an audit committee financial expert.

ITEM 16B. CODE OF ETHICS

Our  board  of  directors  adopted  a  code  of  business  conduct  and  ethics  that  applies  to  our  directors,  officers  and  employees  in

November 2019. We have posted a copy of our code of business conduct and ethics on our website at http://ir.i-mabbiopharma.com/.

ITEM 16C. PRINCIPAL ACCOUNTANT FEES AND SERVICES

The  following  table  sets  forth  the  aggregate  fees  by  categories  specified  below  in  connection  with  certain  professional  services
rendered  by  PricewaterhouseCoopers  Zhong  Tian  LLP,  our  principal  external  auditors,  for  the  periods  indicated.  We  did  not  pay  any
other fees to our auditors during the periods indicated below.

For the Year Ended December 31,

2022

2023

Audit fees (1)
Tax fees (2)
All other fees

Notes:

(in thousands of RMB)
 5,450

 86  
 —  

 5,900
 —
 —

(1) “Audit fees” means the aggregate fees billed for professional services rendered by our principal auditors for the audit of our annual
financial statements and the review of our comparative interim financial statements, including audit fees relating to our planned dual
listing.

(2) “Tax fees” includes fees billed for tax consultations.

The policy of our audit committee is to pre-approve all audit and other service provided by PricewaterhouseCoopers Zhong Tian
LLP as described above, other than those for de minimis services which are approved by the audit committee prior to the completion of
the audit.

ITEM 16D. EXEMPTIONS FROM THE LISTING STANDARDS FOR AUDIT COMMITTEES

None.

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ITEM 16E. PURCHASES OF EQUITY SECURITIES BY THE ISSUER AND AFFILIATED PURCHASERS

On July 29, 2021, we announced that our board of directors had authorized a stock repurchase program, which we refer to as the
2022 Stock Repurchase Program, under which we were authorized to repurchase up to US$40 million of our ordinary shares in the form
of  ADS  for  a  12-month  period.  The  2022  Stock  Repurchase  Program  became  effective  on  September  12,  2022,  the  date  on  which  a
formal stock repurchase plan engagement agreement was signed with a qualified broker-dealer(s), and was terminated on September 11,
2023. On August 17, 2023, we announced that our board of directors had authorized another stock repurchase program, which we refer to
as the 2023 Stock Repurchase Program, under which we may repurchase up to US$40 million of our ordinary shares in the form of ADS
for a 12-month period. The 2023 Stock Repurchase Program became effective on August 15, 2023. During the 12 -month period starting
from  August  15,  2023,  we  may  acquire  our  ADSs  in  the  open  market  at  prevailing  market  prices  and  through  privately  negotiated
transactions, in block trades and/or through other legally permissible means, as market conditions, our cash balance and applicable laws
and regulations may allow. The program does not obligate I-Mab to acquire any particular number of its ADSs.

In 2023, we purchased an aggregate of 4,633,386 ADSs under our stock repurchase programs. The table below is a summary of the
shares repurchased by us in 2023. All shares were repurchased in the open market pursuant to the authorized stock repurchase programs.

Period
April 2023
May 2023
June 2023
July 2023
September 2023
October 2023
November 2023
December 2023
Total

Total Number of

Average Price ADSs Purchased as 
Part of the Publicly
 Announced Plans

 Paid Per
ADS

Approximate 
Dollar Value
of ADSs that May 
Yet be Purchased
Under the Plans

 US$3.06  
 US$3.06  
 US$3.23  
 US$2.67  
 US$1.27  
 US$1.36  
 US$1.60  
 US$1.52  
US$1.87  

 297,868   US$36.1 million
 987,023   US$34.0 million
 1,149,880   US$33.5 million
 1,242,142   US$33.2 million
 1,800,024   US$39.3 million
 3,250,130   US$37.3 million
 4,066,050   US$36.0 million
 4,633,386   US$35.2 million
 4,633,386   US$35.2 million

Total Number of 
ADSs Purchased
 297,868  
 689,155  
 162,857  
 92,262  
 557,882  
 1,450,106  
 815,920  
 567,336  
 4,633,386  

ITEM 16F. CHANGE IN REGISTRANT’S CERTIFYING ACCOUNTANT

Not applicable.

ITEM 16G. CORPORATE GOVERNANCE

As  a  Cayman  Islands  company  listed  on  Nasdaq,  we  are  subject  to  the  Nasdaq  corporate  governance  listing  standards.  However,
Nasdaq rules permit a foreign private issuer like us to follow the corporate governance practices of its home country. Certain corporate
governance practices in the Cayman Islands, which is our home country, may differ significantly from the Nasdaq corporate governance
listing standards.

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In lieu of (i) the requirements of Rule 5605(b) of the Nasdaq Rules that a majority of a Nasdaq-listed company’s board of directors
be  independent  directors  as  defined  in  Rule  5605(a)(2),  (ii)  the  requirements  of  Rule  5605(d)  that  a  compensation  committee  be
comprised solely of independent directors, (iii) the requirements of Rule 5605(e) that a nominating committee be comprised solely of
independent directors, (iv) the requirements of Rule 5620(a) that each Nasdaq-listed company should hold an annual general meeting of
shareholders no later than one year after the end of its fiscal year-end, and (v) the requirements of Rule 5635(c) of the Nasdaq Rules that
shareholder approval be required prior to the issuance of securities when a stock option or purchase plan is to be established or materially
amended or other equity compensation arrangement made or materially amended, pursuant to which stock may be acquired by officers,
directors, employees, or consultants, we have followed and intend to continue to follow our home country practices with respect to the
composition  of  our  board  of  directors  and  board  committees,  annual  shareholders  meeting  as  well  as  the  approval  for  adoption  and
material amendment to our equity-based compensation plans. If we choose to follow any other home country practice in the future, our
shareholders  may  be  afforded  less  protection  than  they  otherwise  would  under  the  Nasdaq  corporate  governance  listing  standards
applicable to U.S. domestic issuers. See “Item 3. Key Information—D. Risk Factors—General Risks Related to Our ADSs—We are a
foreign  private  issuer  within  the  meaning  of  the  rules  under  the  Exchange  Act,  and  as  such  we  are  exempt  from  certain  provisions
applicable to U.S. domestic public companies.”

ITEM 16H. MINE SAFETY DISCLOSURE

Not applicable.

ITEM 16I. DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS

Not applicable.

ITEM 16J. INSIDER TRADING POLICIES

Not applicable.

ITEM 16K. CYBERSECURITY

Risk Management and Strategy

We  have  implemented  comprehensive  cybersecurity  risk  assessment  procedures  to  ensure  effectiveness  in  cybersecurity
management, strategy and governance and reporting cybersecurity risks. We have also integrated cybersecurity risk management into our
overall enterprise risk management system.

We are committed to safeguarding our systems and data. Our approach to managing internal and external cybersecurity risks and
safeguarding sensitive data is multi-faceted, involving technological safeguards, procedural protocols, a rigorous program of surveillance
on  our  corporate  network,  continuous  testing  of  aspects  of  our  security  posture  internally  and  with  third-party  consultants  or
collaborators, a solid incident response framework and regular cybersecurity training sessions for our employees. Our IT department is
actively  engaged  in  continuous  monitoring  of  the  performance  of  our  infrastructure  to  ensure  prompt  identification  and  response  to
potential issues, including potential cybersecurity threats. We use third-party service providers to assist us from time to time to identify,
assess,  and  manage  material  risks  from  cybersecurity  threats,  including  for  example:  professional  services  firms,  cybersecurity
consultants and cybersecurity software providers.

As  of  the  date  of  this  annual  report,  we  have  not  experienced  any  material  cybersecurity  incidents  or  identified  any  material
cybersecurity  threats  that  have  affected  or  are  reasonably  likely  to  materially  affect  us,  our  business  strategy,  results  of  operations  or
financial condition.

Governance

Our nominating and corporate governance committee of our board of directors is responsible for overseeing our cybersecurity risk
management  and  is  informed  on  risks  from  cybersecurity  threats.  The  nominating  and  corporate  governance  committee  shall  review,
approve  and  maintain  oversight  of  the  disclosure  (i)  on  Form  6-K  for  material  cybersecurity  incidents  (if  any)  and  (ii)  related  to
cybersecurity matters in the periodic reports (including annual report on Form 20-F) of our company.

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On  the  management  level,  our  chief  executive  officer  and  chief  financial  officer,  collectively  referred  as  the  Cybersecurity  Risk
Management Officers, are responsible for assessing, identifying and managing material risks from cybersecurity threats to our company
and  monitoring  the  prevention,  detection,  mitigation  and  remediation  of  material  cybersecurity  incidents.  Our  Cybersecurity  Risk
Management  Officers  report  to  our  nominating  and  corporate  governance  committee  (i)  periodically  regarding  their  assessment,
identification and management on material risks from cybersecurity threats happened in the ordinary course of our business operations
and  (ii)  on  disclosure  concerning  cybersecurity  matters  in  our  Form  6-K  for  material  cybersecurity  incidents  (if  any)  and  our  annual
report on Form 20-F.

If  a  cybersecurity  incident  occurs,  our  Cybersecurity  Risk  Management  Officers  will  promptly  organize  relevant  personnel  for
internal assessment and, depending on the situation, seek the opinions of external experts and legal advisors. If it is determined that the
incident  could  potentially  be  a  material  cybersecurity  event,  our  Cybersecurity  Risk  Management  Officers  will  promptly  report  the
incident  and  relevant  assessment  results  to  our  nominating  and  corporate  governance  committee,  who  will  decide  on  the  relevant
response  measures  and  whether  any  disclosure  is  necessary.  If  such  disclosure  is  determined  to  be  necessary,  our  Cybersecurity  Risk
Management Officers shall promptly prepare disclosure material for review and approval by our nominating and corporate governance
committee before it is disseminated to the public.

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ITEM 17.

FINANCIAL STATEMENTS

PART III

We have elected to provide financial statements pursuant to Item 18.

ITEM 18.

FINANCIAL STATEMENTS

The consolidated financial statements of I-Mab are included at the end of this annual report.

ITEM 19. EXHIBITS

Exhibit
Number
1.1

Description of Document
Sixth Amended and Restated Memorandum and Articles of Association of the Registrant (incorporated herein by reference
to Exhibit 3.2 to the registration statement on Form F-1 (File No. 333-234363), as amended, initially filed with the SEC on
October 29, 2019)

2.1

2.2

2.3

2.4

2.5

2.6

4.1

4.2

4.3

4.4

4.5

4.6

4.7

Registrant’s Specimen American Depositary Receipt (included in Exhibit 2.3)

Registrant’s Specimen Certificate for Ordinary Shares (incorporated herein by reference to Exhibit 4.2 to the registration
statement on Form F-1 (File No. 333-234363), as amended, initially filed with the SEC on October 29, 2019)

Deposit  Agreement  dated  as  of  January  22,  2020,  among  the  Registrant  the  depositary  and  holder  of  the  American
Depositary  Receipt  (incorporated  herein  by  reference  to  Exhibit  4.3  to  the  registration  statement  on  Form  S-8  (File  No.
333-239871) filed with the SEC on July 15, 2020)

Fourth Amended and Restated Shareholders Agreement, dated as of July 25, 2019 between the Registrant and other parties
thereto (incorporated herein by reference to Exhibit 4.4 to the registration statement on Form F-1 (File No. 333-234363), as
amended, initially filed with the SEC on October 29, 2019)

Description of American Depositary Shares of the Registrant (incorporated herein by reference to Exhibit 2.5 to the annual
report on Form 20-F (File No. 001-39173) filed with the SEC on April 29, 2020)

Description of Ordinary Shares of the Registrant (incorporated herein by reference to Exhibit 2.6 to the annual report on
Form 20-F (File No. 001-39173) filed with the SEC on April 29, 2020)

Second Amended and Restated 2017 Employee Stock Option Plan (incorporated herein by reference to Exhibit 10.1 to the
registration statement on Form F-1 (File No. 333-234363), as amended, initially filed with the SEC on October 29, 2019)

Second Amended and Restated 2018 Employee Stock Option Plan (incorporated herein by reference to Exhibit 10.2 to the
registration statement on Form F-1 (File No. 333-234363), as amended, initially filed with the SEC on October 29, 2019)

2019  Share  Incentive  Plan  (incorporated  herein  by  reference  to  Exhibit  10.22  to  the  registration  statement  on  Form  F-1
(File No. 333-234363), as amended, initially filed with the SEC on October 29, 2019)

2020 Share Incentive Plan (incorporated herein by reference to Exhibit 10.4 to the registration statement on Form S-8 (File
No. 333-239871) filed with the SEC on July 15, 2020)

2021 Share Incentive Plan (incorporated herein by reference to Exhibit 10.1 to the registration statement on Form S-8 (File
No. 333-256603) filed with the SEC on May 28, 2021)

2022 Share Incentive Plan (incorporated herein by reference to Exhibit 10.1 to the registration statement on Form S-8 (File
No. 333-265684) filed with the SEC on June 17, 2022)

Form of Indemnification Agreement, between the Registrant and its directors and executive officers (incorporated herein by
reference to Exhibit 10.3 to the registration statement on Form F-1 (File No. 333-234363), as amended, initially filed with
the SEC on October 29, 2019)

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Exhibit
Number
4.8

4.9

4.10†

4.11

4.12

4.13

4.14†

4.15

4.16

4.17

4.18

4.19†

4.20†

4.21†

Description of Document
Form  of  Employment  Agreement,  between  the  Registrant  and  its  executive  officers  (incorporated  herein  by  reference  to
Exhibit 10.4 to the registration statement on Form F-1 (File No. 333-234363), as amended, initially filed with the SEC on
October 29, 2019)

Framework Agreement, dated as of May 26, 2017, among the Registrant and the other parties thereto (incorporated herein
by reference to Exhibit 10.8 to the registration statement on Form F-1 (File No. 333-234363), as amended, initially filed
with the SEC on October 29, 2019)

License  and  Collaboration  Agreement,  dated  as  of  November  30,  2017,  between  the  Registrant  and  MorphoSys  AG
(incorporated  herein  by  reference  to  Exhibit  10.13  to  the  registration  statement  on  Form  F-1  (File  No.  333-234363),  as
amended, initially filed with the SEC on October 29, 2019)

Intellectual Property Assignment and License Agreement, dated as of October 16, 2015, between Tasgen Bio-tech (Tianjin)
Co., Ltd. and Genexine Inc. (incorporated herein by reference to Exhibit 10.14 to the registration statement on Form F-1
(File No. 333-234363), as amended, initially filed with the SEC on October 29, 2019)

Intellectual  Property  License  Agreement,  dated  as  of  December  22,  2017,  between  the  Registrant  and  Genexine,  Inc.
(incorporated  herein  by  reference  to  Exhibit  10.15  to  the  registration  statement  on  Form  F-1  (File  No.  333-234363),  as
amended, initially filed with the SEC on October 29, 2019)

License and Sublicense Agreement, dated as of November 4, 2016, between the Registrant and Ferring International Center
SA (incorporated herein by reference to Exhibit 10.16 to the registration statement on Form F-1 (File No. 333-234363), as
amended, initially filed with the SEC on October 29, 2019)

License and Collaboration Agreement, dated as of July 26, 2018, between the Registrant and ABL Bio (incorporated herein
by reference to Exhibit 4.12 to the annual report on Form 20-F (File No. 001-39173) filed with the SEC on April 29, 2020)

English  translation  of  Product  Development  Agreement,  dated  as  of  December  10,  2018,  between  I-Mab  Shanghai  and
CSPC Baike (Shandong) Biopharmaceutical Co., Ltd. (incorporated herein by reference to Exhibit 10.19 to the registration
statement on Form F-1 (File No. 333-234363), as amended, initially filed with the SEC on October 29, 2019)

Subscription  Agreement,  dated  as  of  September  3,  2020,  among  the  Registrant  and  certain  affiliates  of  Hillhouse
(incorporated herein by reference to Exhibit 2 of the Schedule 13D (File No. 005-91674) jointly filed by Hillhouse Capital
Advisors, Ltd. and Hillhouse Capital Management, Ltd. with the SEC on September 14, 2020)

Amendment  to  Subscription  Agreement,  dated  as  of  December  17,  2020,  among  the  Registrant  and  certain  affiliates  of
Hillhouse  (incorporated  herein  by  reference  to  Exhibit  5  of  the  Schedule  13D/A  (File  No.  005-91674)  jointly  filed  by
Hillhouse Capital Advisors, Ltd. and Hillhouse Capital Management, Ltd. with the SEC on December 21, 2020)

Form of Subscription Agreement, dated as of September 3, 2020, between the Registrant and certain investors (other than
Hillhouse)  (incorporated  herein  by  reference  to  Exhibit  10.17  to  the  registration  statement  on  Form  F-1  (File  No.  333-
251050), as amended, initially filed with the SEC on December 1, 2020)

License  and  Collaboration  Agreement,  dated  as  of  September  3,  2020,  among  I-Mab  Shanghai,  I-Mab  US  and  AbbVie
Ireland Unlimited Company (incorporated herein by reference to Exhibit 10.19 to the registration statement on Form F-1
(File No. 333- 251050), as amended, initially filed with the SEC on December 1, 2020)

English  translation  of  Exclusive  Development,  Manufacture,  and  Sales  Collaboration  Agreement,  dated  as  of  November
10, 2021, among I-Mab Biopharma Hong Kong Limited, I-Mab Biopharma Co., Ltd., Jumpcan Pharmaceutical Group Co.,
Ltd. and Jiangsu Jiyuan Medicine Co., Ltd. (incorporated herein by reference to Exhibit 4.24 to the annual report on Form
20-F (File No. 001-39173) filed with the SEC on April 29, 2022)

Amendment No.1 to the License and Collaboration Agreement dated as of August 15, 2022 among I-Mab Shanghai, I-Mab
US and AbbVie Global Enterprise Ltd. (incorporated herein by reference to Exhibit 4.22 to the annual report on Form 20-F
(File No. 001-39173) filed with the SEC on May 1, 2023)

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Exhibit
Number
4.22†

4.23†

4.24

4.25

4.26

8.1*

11.1

12.1*

12.2*

Description of Document
English translation of Shareholders Agreement, dated as of September 15, 2020, among I-Mab Biopharma (Hangzhou) Co.,
Ltd. and other parties thereto (incorporated herein by reference to Exhibit 10.21 to the registration statement on Form  F-1
(File No. 333-251050), as amended, initially filed with the SEC on December 1, 2020)

English translation of Equity Transfer Agreement of I-Mab Biopharma Co., Ltd., dated February 6, 2024, entered into by
and  among  I-Mab  Bio-tech  (Tianjin)  Co.,  Ltd.,  I-Mab  Biopharma  (Hangzhou)  Co.,  Ltd.  and  I-Mab  Biopharma  Co.,  Ltd.
(incorporated herein by reference to Exhibit 99.2 to the current report on Form 6-K (File No. 001-39173) furnished with the
SEC on February 7, 2024)

English  translation  of  Equity  Transfer  Agreement  of  I-Mab  Biopharma  (Hangzhou)  Co.,  Ltd.,  dated  February  6,  2024,
entered into by and among I-Mab Biopharma Hong Kong Limited, I-Mab Biopharma (Hangzhou) Co., Ltd. and the other
parties thereto (incorporated herein by reference to Exhibit 99.3 to the current report on Form 6-K (File No. 001-39173)
furnished with the SEC on February 7, 2024)

English translation of I-Mab Biopharma (Hangzhou) Co., Ltd. Investment Agreement, dated February 6, 2024, entered into
by  and  among  I-Mab,  I-Mab  Biopharma  Co.,  Ltd.,  I-Mab  Biopharma  (Hangzhou)  Co.,  Ltd.  and  the  other  parties  thereto
(incorporated herein by reference to Exhibit 99.4 to the current report on Form 6-K (File No. 001-39173) furnished with the
SEC on February 7, 2024)

English translation of I-Mab Biopharma (Hangzhou) Co., Ltd. Shareholders’ Agreement, dated February 6, 2024, entered
into by and among I-Mab, I-Mab Biopharma Hong Kong Limited, I-Mab Biopharma (Hangzhou) Co., Ltd. and the other
parties thereto (incorporated herein by reference to Exhibit 99.5 to the current report on Form 6-K (File No. 001-39173)
furnished with the SEC on February 7, 2024)

Principal Subsidiaries of the Registrant

Code of Business Conduct and Ethics of the Registrant (incorporated herein by reference to Exhibit 99.1 to the registration
statement on Form F-1 (File No. 333-234363), as amended, initially filed with the SEC on October 29, 2019)

Certification by Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Certification by Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

13.1**

Certification by Principal Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

13.2**

Certification by Principal Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

15.1*

15.2*

15.3*

97.1*

Consent of JunHe LLP

Consent of PricewaterhouseCoopers Zhong Tian LLP

Consent of Harney Westwood & Riegels

Clawback Policy of the Registrant

101.INS*

Inline XBRL Instance Document—this instance document does not appear in the Interactive Data File because its XBRL
tags are embedded within the Inline XBRL document

101.SCH*

Inline XBRL Taxonomy Extension Schema Document

101.CAL*

Inline XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF*

Inline XBRL Taxonomy Extension Definition Linkbase Document

101.LAB*

Inline XBRL Taxonomy Extension Label Linkbase Document

101.PRE*

Inline XBRL Taxonomy Extension Presentation Linkbase Document

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Exhibit
Number

Description of Document

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

*
Filed herewith.
** Furnished herewith.
†

Portions of this exhibit have been omitted pursuant to Item 601(b)(10)(iv) of Regulation S-K.

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The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized

the undersigned to sign this annual report on its behalf.

SIGNATURES

Date: April 30, 2024

I-MAB

By:

/s/ Joseph Skelton
Name:Joseph Skelton
Title: Chief Financial Officer

175

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I-Mab

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Report  of  Independent  Registered  Public  Accounting  Firm  (PricewaterhouseCoopers  Zhong  Tian  LLP,  Shanghai,  China,

Auditor Firm ID:1424)

Consolidated Balance Sheets as of December 31, 2022 and 2023
Consolidated Statements of Comprehensive Loss for the Years Ended December 31, 2021, 2022 and 2023
Consolidated Statements of Changes in Shareholders’ Equity for the Years Ended December 31, 2021, 2022 and 2023
Consolidated Statements of Cash Flows for the Years Ended December 31, 2021, 2022 and 2023
Notes to the Consolidated Financial Statements

     Page
F-2

F-5
F-6
F-7
F-10
F-13

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Table of Contents

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholders of I-Mab

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of I-Mab and its subsidiaries (the “Company”) as of December 31, 2023
and 2022, and the related consolidated statements of comprehensive loss, of changes in shareholders’ equity and of cash flows for each of
the three years in the period ended December 31, 2023, including the related notes (collectively referred to as the “consolidated financial
statements”). We also have audited the Company’s internal control over financial reporting as of December 31, 2023, based on criteria
established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway
Commission (COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the
Company as of December 31, 2023 and 2022, and the results of its operations and its cash flows for each of the three years in the period
ended  December  31,  2023  in  conformity  with  accounting  principles  generally  accepted  in  the  United  States  of  America.  Also  in  our
opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2023,
based on criteria established in Internal Control - Integrated Framework (2013) issued by the COSO.

Basis for Opinions

The Company’s  management  is  responsible  for  these  consolidated  financial  statements,  for  maintaining  effective  internal  control  over
financial  reporting,  and  for  its  assessment  of  the  effectiveness  of  internal  control  over  financial  reporting,  included  in  Management’s
Annual Report on Internal Control over Financial Reporting appearing under Item 15. Our responsibility is to express opinions on the
Company’s consolidated financial statements and on the Company’s internal control over financial reporting based on our audits. We are
a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to
be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations
of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to
obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error
or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the
consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures
included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits
also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall
presentation  of  the  consolidated  financial  statements.  Our  audit  of  internal  control  over  financial  reporting  included  obtaining  an
understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating
the  design  and  operating  effectiveness  of  internal  control  based  on  the  assessed  risk.  Our  audits  also  included  performing  such  other
procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of
financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting
principles.  A  company’s  internal  control  over  financial  reporting  includes  those  policies  and  procedures  that  (i)  pertain  to  the
maintenance  of  records  that,  in  reasonable  detail,  accurately  and  fairly  reflect  the  transactions  and  dispositions  of  the  assets  of  the
company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in
accordance  with  generally  accepted  accounting  principles,  and  that  receipts  and  expenditures  of  the  company  are  being  made  only  in
accordance  with  authorizations  of  management  and  directors  of  the  company;  and  (iii)  provide  reasonable  assurance  regarding
prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on
the financial statements.

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Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of
any  evaluation  of  effectiveness  to  future  periods  are  subject  to  the  risk  that  controls  may  become  inadequate  because  of  changes  in
conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current period audit of the consolidated financial statements
that were communicated or required to be communicated to the audit committee and that (i) relate to accounts or disclosures that are
material  to  the  consolidated  financial  statements  and  (ii)  involved  our  especially  challenging,  subjective,  or  complex  judgments.  The
communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole,
and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the
accounts or disclosures to which they relate.

Accrued Research and Development Expenses

As  described  in  Notes  2.16  and  10  to  the  consolidated  financial  statements,  the  Company  has  entered  into  various  research  and
development contracts with research organizations and other companies. Total research and development costs incurred during the year
ended December 31, 2023 were RMB811 million, and research and development costs accrued were RMB181 million as of December
31, 2023. Management applied significant judgment in estimating the progress of its research and development activities and completion
of  or  likelihood  of  achieving  milestone  events  per  underlying  agreements  when  estimating  the  research  and  development  costs  to  be
accrued at each reporting period end.

The principal considerations for our determination that performing procedures relating to accrued research and development expenses is
a critical audit matter are the significant judgment made by management in estimating the accrued research and development expenses,
including the estimation of the progress of its research and development activities and completion of or likelihood of achieving milestone
events per underlying agreements. This in turn led to a relatively high degree of auditor judgement, subjectivity, and effort in performing
procedures relating to management’s estimation of accrued research and development costs and evaluating the related audit evidence.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on
the consolidated financial statements. These procedures included testing the effectiveness of controls relating to the estimation of accrued
research and development costs. These procedures also included, among others, (i) testing management’s process for estimating accrued
research and development costs; (ii) evaluating the appropriateness of the method used by management to develop the estimates; (iii)
evaluating  the  reasonableness  of  the  estimates  related  to  the  progress  of  research  and  development  activities  and  completion  of  or
likelihood of achieving milestone events per underlying agreements; and (iv) testing the completeness and accuracy of underlying data
used to estimate accrued research and development expenses.

Valuation of put right liabilities

As described in Notes 2.4, 8 and 15 to the consolidated financial statements, the put right written by the Company to domestic investors
in its affiliate was recorded as a freestanding equity-linked instrument and classified as put right liabilities. The fair value of the put right
liabilities was determined by management using an option pricing model. The significant unobservable inputs used in the option pricing
model included spot price, estimated volatility and probability of triggering event for redemption option, among which the spot price was
determined  by  management  using  the  market  approach  and  the  expected  volatility  was  estimated  based  on  daily  stock  prices  of  the
comparable companies for a period with length commensurate to the expected terms of redemption event. The significant unobservable
inputs used in the market approach include estimated volatility and probability of triggering event for redemption option. The Company
recognized the put right liabilities of RMB98 million as of December 31, 2023 and the increase in fair value of the put right liabilities of
RMB8 million during the year ended December 31, 2023.

The principal considerations for our determination that performing procedures relating to the valuation of put right liabilities is a critical
audit  matter  are  the  significant  judgment  made  by  management  in  determining  the  fair  value  of  the  put  right  liabilities  related  to
estimated volatility and probability of triggering event for redemption option, which in turn led to a high degree of auditor judgment,
subjectivity,  and  effort  in  performing  procedures  relating  to  the  fair  value  measurement  of  the  put  right  liabilities  and  evaluating  the
related audit evidence, and the audit effort involved the use of professionals with specialized skill and knowledge.

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Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on
the consolidated financial statements. These procedures included testing the effectiveness of controls relating to management’s valuation
of the put right liabilities. These procedures also included, among others, testing management’s process for estimating the fair value of
the  put  right  liabilities,  which  included  (i)  evaluating  the  appropriateness  of  the  valuation  methods,  (ii)  testing  the  completeness,
mathematical accuracy and relevance of the underlying data used in the option pricing model and market approach, and (iii) evaluating
the reasonableness of significant assumptions related to estimated volatility and probability of triggering event for redemption option.
The estimated volatility was evaluated by considering the relevance and appropriateness of the comparable company selection for the
volatility calculation. The probability of triggering event for redemption option was evaluated by considering the business development
status and plan of the affiliate.  Professionals with specialized skill and knowledge were used to assist in evaluating the appropriateness
of the Company’s valuation methods and the reasonableness of the significant assumptions related to the estimated volatility applied.

Goodwill impairment assessments

As  described  in  Notes  2.12  and  7  to  the  consolidated  financial  statements,  the  Company  recognized  a  full  impairment  of  RMB163
million against the goodwill balance as of December 31, 2023. Management performs impairment tests to assess the carrying value of
goodwill on an annual basis or more frequently if events or changes in circumstances indicate that goodwill might be impaired. Where
the qualitative assessment indicated that it is more likely than not that the fair value of a reporting unit is less than its carrying amount,
including goodwill, a quantitative goodwill impairment test is performed. Goodwill impairment charge is recognized for the amount by
which the carrying amount exceeds the reporting unit’s fair value. Fair value of the reporting unit is estimated by management using a
discounted cash flow model. The use of discounted cash flow model requires management to make judgments and assumptions related to
future revenues, discount rate and terminal growth rate. Based on the goodwill impairment test of the Company’s reporting unit as of
December 31, 2023, the carrying amount of the Company’s single reporting unit had exceeded its estimated fair value and therefore, a
full impairment was recognized against the goodwill balance.

The  principal  considerations  for  our  determination  that  performing  procedures  relating  to  the  goodwill  impairment  assessments  is  a
critical audit matter are the significant judgment made by management in developing the fair value of the reporting unit. This in turn led
to  a  high  degree  of  auditor  judgment,  subjectivity,  and  effort  in  performing  procedures  and  in  evaluating  management’s  significant
assumptions related to future revenues, discount rate and terminal growth rate, and the audit effort involved the use of professionals with
specialized skill and knowledge.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on
the consolidated financial statements. These procedures included testing the effectiveness of controls relating to management’s goodwill
impairment assessment process, including controls over the valuation of the Company’s reporting unit. These procedures also included,
among others, testing management’s identification of the reporting unit and the process for developing the fair value estimates, which
included (i) evaluating the appropriateness of the discounted cash flow model, (ii) testing the completeness, accuracy and relevance of
the underlying data used in the discounted cash flow model, and (iii) evaluating the reasonableness of the significant assumptions related
to future revenues, discount rate and terminal growth rate. Evaluating management’s assumptions related to future revenues, discount rate
and terminal growth rate involved evaluating whether the assumptions used by management were reasonable considering the current and
historical performance of the reporting unit; the consistency with relevant industry and market data; and whether these assumptions were
consistent with evidence obtained in other areas of the audit. Professionals with specialized skill and knowledge were used to assist in the
evaluation of the Company’s discounted cash flow model, and the discount rate and terminal growth rate assumptions.

/s/PricewaterhouseCoopers Zhong Tian LLP
Shanghai, the People’s Republic of China
April 30, 2024

We have served as the Company’s auditor since 2018.

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I-MAB
Consolidated Balance Sheets
As of December 31, 2022 and 2023
(All amounts in thousands, except for share and per share data, unless otherwise noted)

Assets
Current assets

Cash and cash equivalents
Short-term restricted cash
Short-term investments
Prepayments and other receivables

Total current assets

Long-term restricted cash
Property, equipment and software
Operating lease right-of-use assets
Intangible assets
Goodwill
Investments accounted for using the equity method
Other non-current assets

Total assets

Liabilities and shareholders’ equity
Current liabilities

Short-term bank borrowings
Accruals and other payables
Contract liabilities, current
Operating lease liabilities, current

Total current liabilities

Put right liabilities
Contract liabilities, non-current
Operating lease liabilities, non-current
Other non-current liabilities

Total liabilities
Commitments and contingencies

Shareholders’ equity

Ordinary  shares  (US$0.0001  par  value,  800,000,000  shares  authorized  as  of
December 31, 2022 and 2023; 190,879,919 and 185,613,662 shares issued  and
outstanding as of December 31, 2022 and 2023, respectively)

Treasury stock
Additional paid-in capital
Accumulated other comprehensive income
Accumulated deficit

Total shareholders’ equity
Total liabilities and shareholders’ equity

     Notes     

2022
RMB

As of December 31, 
2023
     US$ (Note 2.5)

RMB

2.7
  2.4, 2.8 
3

2.7  
4
5
6
7
8

9
10

5

2.4, 8  
14
5
10

18

12
12

3,214,005  
96,764
235,429  
80,278  
3,626,476  
—  

60,841
63,125  
118,888  
162,574  
30,850  
10,911  
4,073,665  

18,956  

706,572

8,677  
23,961  
758,166  
88,687  
267,878  
32,069  
16,963  
1,163,763  

2,141,445  

—

143,221  
52,003  
2,336,669  
58,913  
36,511
46,400  
118,110  
—  
12,082  
4,282  
2,612,967  

29,970  

357,754

2,200  
21,890  
411,814  
98,110  
292,124  
23,099  
69,664  
894,811  

301,616
—
20,172
7,325
329,113
8,298
5,142
6,535
16,635
—
1,702
603
368,028

4,221
50,389
310
3,083
58,003
13,819
41,145
3,253
9,811
126,031

132  
(21,249) 

133  
(56,803) 

9,579,375

9,804,379

213,794  
(6,862,150) 
2,909,902  
4,073,665  

298,291  
(8,327,844) 
1,718,156  
2,612,967  

19
(8,001)
1,380,918
42,013
(1,172,952)
241,997
368,028

The accompanying notes are an integral part of these consolidated financial statements.

F-5

    
 
  
 
   
   
  
 
  
 
   
   
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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I-MAB
Consolidated Statements of Comprehensive Loss
For the Years Ended December 31, 2021, 2022 and 2023
(All amounts in thousands, except for share and per share data, unless otherwise noted)

Revenues

Licensing and collaboration revenue
Supply of investigational products

Total revenues

Cost of revenues

Expenses

Research and development expenses
Administrative expenses
Impairment of goodwill

Loss from operations

Interest income
Interest expense
Other income (expenses), net
Equity in loss of affiliates

Loss before income tax expense
Income tax benefit (expense)
Net loss attributable to I-MAB
Net loss attributable to ordinary shareholders

Net loss attributable to I-MAB
Other comprehensive income (loss):

    Notes    

2021
RMB

Year Ended December 31, 

2022
RMB

2023

RMB

14  

  2.16 

7  

15  
8  

11  

40,115  
47,911  
88,026  
(46,432) 

(249,665) 
28,102  
(221,563) 
(27,237) 

16,814  
10,830  
27,644  
—  

(1,212,958) 
(899,943) 
—  
(2,071,307)
21,333  
—  
83,162  
(367,883) 
(2,334,695) 
3,154  
(2,331,541) 
(2,331,541) 

(904,901) 
(815,766) 
—  
(1,969,467)
26,908  
(9) 
(126,587) 
(437,465) 
(2,506,620) 
(697) 
(2,507,317) 
(2,507,317) 

(810,646) 
(453,017) 
(162,574) 
(1,398,593)
51,749  
(722) 
(38,109) 
(80,019) 
(1,465,694) 
—  
(1,465,694) 
(1,465,694) 

US$
(Note 2.5)

2,368
1,525
3,893
—

(114,177)
(63,806)
(22,898)
(196,988)
7,289
(102)
(5,368)
(11,270)
(206,439)
—
(206,439)
(206,439)

(2,331,541) 

(2,507,317) 

(1,465,694) 

(206,439)

Foreign currency translation adjustments, net of nil tax

Total comprehensive loss attributable to I-MAB

(135,717) 
(2,467,258) 

400,304  
(2,107,013) 

84,497  
(1,381,197) 

11,901
(194,538)

Net loss attributable to ordinary shareholders
Weighted-average number of ordinary shares used in calculating

(2,331,541) 

(2,507,317) 

(1,465,694) 

(206,439)

net loss per share - basic

16   174,707,055   189,787,292   191,423,850  

191,423,850

Weighted-average number of ordinary shares used in calculating

net loss per share - diluted

16   174,707,055   189,787,292   191,423,850  

191,423,850

Net loss per share attributable to ordinary shareholders

—Basic
—Diluted

Net loss per ADS attributable to ordinary shareholders

—Basic
—Diluted

16  
16  

(13.35) 
(13.35) 

(30.71) 
(30.71) 

(13.21) 
(13.21) 

(30.38) 
(30.38) 

(7.66) 
(7.66) 

(17.62) 
(17.62) 

(1.08)
(1.08)

(2.48)
(2.48)

The accompanying notes are an integral part of these consolidated financial statements.

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I-MAB
Consolidated Statements of Changes in Shareholders’ Equity
For the Years Ended December 31, 2021, 2022 and 2023
(All amounts in thousands, except for share and per share data, unless otherwise noted)

Ordinary share
(Note 12)
(US$0.0001 par value)
Number of
shares

Treasury

    Amount    
stock     
     RMB      RMB     

paid-in
capital
RMB

Accumulated
other

  Additional

  comprehensive

Balance as of December 31, 2020

Foreign currency translation adjustments
Net loss
Share-based compensation of I-Mab
Exercise of stock options
Issuance  of  ordinary  shares  for  restricted

  164,888,519  
—  
—  
—
8,227,843

share units (Note 13)

Exercise of warrants
Ordinary 

shares 

surrendered  by 

a

5,369,140
5,341,267

114  
—  
—  
—
5

4
3

(16)

—

—   7,701,116  
—  
—  
—  
—  
—
—

608,609
51,310

—
—

—

8,547
672,661

—

shareholder
Proportionate 

share 

share-based
compensation  expenses  recorded  in  an
equity method affiliate (Note 8 (a))

of 

Balance as of December 31, 2021

income
(loss) 
RMB
(50,793) 
(135,717) 
—  
—
—

—
—

—

Accumulated  
deficit
RMB
(2,023,292) 
—  
(2,331,541) 

—
—

—
—

—

Total
shareholders’
equity
RMB
5,627,145
(135,717)
(2,331,541)
608,609
51,315

8,551
672,664

—

—  
  183,826,753  

—  
126  

—  
58,534  
—   9,100,777  

—  
(186,510) 

—  
(4,354,833) 

58,534
4,559,560

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Table of Contents

I-MAB
Consolidated Statements of Changes in Shareholders’ Equity (Continued)
For the Years Ended December 31, 2021, 2022 and 2023
(All amounts in thousands, except for share and per share data, unless otherwise noted)

Ordinary share
(Note 12)
(US$0.0001 par value)
Number of
shares

Amount
     RMB     

  183,826,753  

126  

—  
—  

—  
6,845,888  

—  
—  

—  
5  

1,859,819  

1  

Balance  as  of  December

31, 2021
Foreign 

currency

translation adjustments

Net loss
Share-based  compensation

of I-Mab

Exercise of stock options
of 
Issuance 
shares 
for 
share units (Note 13)

ordinary
restricted

Treasury stock

Number of
shares

Amount
     RMB     

Additional
paid-in
capital
RMB

Accumulated
other
comprehensive
income
(loss)
RMB

Accumulated
deficit
RMB

Total
shareholders’
equity
RMB

—

—
—

—
—

—

—   9,100,777  

(186,510) 

(4,354,833) 

4,559,560

—  
—  

—  
—  

—  

—  
—  

400,304  
—  

—  
(2,507,317) 

400,304
(2,507,317)

357,148  
44,645  

(1) 

—

—  
—  

—  

—

—  
—  

—  

—

357,148
44,650

—

(21,249)

—

— (1,652,541)

(21,249)

of 

shares

share  of

Repurchase 
(Note 12)
Proportionate 
share-based
compensation  expenses
recorded  in  an  equity
method  affiliate  (Note  8
(a))

—  

—  

—

—  

76,806  

—  

—  

76,806

Balance  as  of  December

31, 2022

  192,532,460  

132  

(1,652,541)

(21,249)  9,579,375  

213,794  

(6,862,150) 

2,909,902

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I-MAB
Consolidated Statements of Changes in Shareholders’ Equity (Continued)
For the Years Ended December 31, 2021, 2022 and 2023
(All amounts in thousands, except for share and per share data, unless otherwise noted)

Ordinary share
(Note 12)
(US$0.0001 par value)
Number of
shares

Amount    

     RMB

Treasury stock

Number of
shares

Amount
     RMB     

Additional
paid-in
capital
RMB

Accumulated
other
comprehensive
income
(loss) 
RMB

Accumulated
deficit
RMB

Total
shareholders’
equity
RMB

  192,532,460  

132

(1,652,541) 

(21,249)  9,579,375  

213,794  

(6,862,150) 

2,909,902

—  
—  

—  
280,568  

—
—

—
—

—  
126,874  

—  
847  

193,002  
1,941  

—  
—  

—  
—  

—  
—  

84,497  
—  

—  
(1,465,694) 

84,497
(1,465,694)

1,260,701  

1

3,722,394  

24,859  

(24,860) 

—  

— (10,656,794) 

(61,260) 

—  

—  
—  

—  

—  

—  
—  

—  

—  

193,002
2,788

—

(61,260)

Balance  as  of  December

31, 2022
Foreign 

currency
translation adjustments  

Net loss
Share-based

compensation of I-Mab  
Exercise of stock options  
ordinary
Issuance 
of 
restricted
for 
shares 
share units (Note 13)

Repurchase  of 

shares

(Note 12)

Proportionate  share  of

share-based
compensation expenses
recorded  in  an  equity
method  affiliate  (Note
8 (a))

Balance  as  of  December

—  

—

—  

—  

54,921  

—  

—  

54,921

31, 2023

  194,073,729  

133

(8,460,067) 

(56,803)  9,804,379  

298,291  

(8,327,844) 

1,718,156

The accompanying notes are an integral part of these consolidated financial statements.

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I-MAB
Consolidated Statements of Cash Flows
For the Years Ended December 31, 2021, 2022 and 2023
(All amounts in thousands, except for share and per share data, unless otherwise noted)

Cash flows from operating activities
Net loss
Adjustments to reconcile net loss to net cash used in operating activities

Depreciation of property, equipment and software
Amortization of intangible assets
Impairment of goodwill
Loss on disposal of property, equipment and operating lease right-of-use asset  
Fair value change of put right liabilities
Equity in loss of affiliates
Share-based compensation
Amortization of right-of use assets and interest of lease liabilities
Recognition of deferred cost for planned dual listing
Loss on deconsolidation of a subsidiary
Fair value change of short-term and other investments
Changes in operating assets and liabilities

Accounts receivable
Contract assets
Prepayments and other receivables
Inventories
Accruals and other payables
Contract liabilities
Other non-current liabilities
Deferred subsidy income
Lease liabilities

Net cash used in operating activities
Cash flows from investing activities

Purchase of property, equipment and software
Proceeds from disposal of property and equipment
Capital injection in an affiliate
Proceeds from disposal of short-term and other investments
Purchase of short-term and other investments
Cash received from deconsolidation of a subsidiary
Net cash generated from (used in) investing activities

2021
RMB

Year Ended December 31, 

2022
RMB

2023

RMB

US$
(Note 2.5)

(2,331,541) 

(2,507,317) 

(1,465,694) 

(206,439)

13,776  
778  
—  
288  
(16,628) 
367,883  
608,609  
19,582  

—
—  
(30,360) 

25,340  
778  
—  
117  
(34,260) 
437,465  
357,148  
37,698  
14,613

—  
13,549  

23,949  
778  
162,574  
488  
7,888  
80,019  
193,002  
27,986  

—
7,905  
(26,461) 

97,417  
(26,389) 
(5,155) 
(27,237) 
152,101  
224,000  
5,959  
(7,509) 
(18,667) 
(973,093) 

33,081  
253,780  
109,226  
27,237  
109,863  
52,555  
2,029  
—  
(35,707) 
(1,102,805) 

—  
—  
35,863  
—  
(342,715) 
17,769  
(6,212) 
—  
(22,089) 
(1,304,950) 

(29,932) 

(45,830) 

(11,351) 

—

(6,000) 
9,482,040  
(10,173,314) 
—  
(727,206) 

26
—  
7,911,518  
(7,407,332) 
—  
458,382  

19

(6,000) 
1,005,249  
(885,580) 
178  
102,515  

3,373
110
22,898
69
1,111
11,270
27,184
3,942
—
1,113
(3,727)

—
—
5,051
—
(48,270)
2,503
(875)
—
(3,111)
(183,798)

(1,599)
3
(845)
141,586
(124,731)
25
14,439

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I-MAB
Consolidated Statements of Cash Flows (Continued)
For the Years ended December 31, 2021, 2022 and 2023
(All amounts in thousands, except for share and per share data, unless otherwise noted)

Year Ended December 31, 

2021
RMB

2022
RMB

2023

RMB

Cash flows from financing activities

Payments of the issuance cost in relation to private placement
Payments of cost in relation to planned dual listing
Proceeds from exercise of warrants
Proceeds from exercise of stock options
Proceeds from issuance of ordinary shares for restricted share units
Proceeds from bank borrowings
Repayment of bank borrowings
Payment for stock repurchase
Prepayment for stock repurchase

(128,786) 
(9,820) 
672,664  
51,315  
8,551  
—  
—  
—
—  

—  
—  
—  
44,650  
—  

18,956

—  
(21,249)
—  

Net cash generated from financing activities
Effect of exchange rate changes on cash, cash equivalents and restricted cash  
Net decrease in cash, cash equivalents and restricted cash
Cash, cash equivalents and restricted cash, beginning of year
Cash, cash equivalents and restricted cash, end of the year

42,357
593,924
389,203  
(128,771) 
(1,235,146) 
(212,863) 
4,758,778   3,523,632  
3,523,632   3,310,769  

—  
—  
—  
2,788  
—  

118,853
(48,926) 
(61,260)
(3,883) 
7,572
84,452  
(1,110,411) 
3,310,769  
2,200,358  

US$
(Note 2.5)

—
—
—
393
—
16,740
(6,892)
(8,628)
(547)
1,066
11,896
(156,397)
466,311
309,914

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I-MAB
Consolidated Statements of Cash Flows (Continued)
For the Years ended December 31, 2021, 2022 and 2023
(All amounts in thousands, except for share and per share data, unless otherwise noted)

Additional ASC 842 supplemental disclosures

Cash  paid  for  fixed  operating  lease  costs  included  in  the  measurement  of  lease

obligations in operating activities

Right-of-use assets obtained in exchange for operating lease obligations

Other supplemental cash flow disclosures

Income tax paid
Interest paid

Non-cash activities

Payables for purchase of property, equipment and software
Accrued planned dual listing costs payable
Recognition of put right liabilities

Year Ended December 31,

2021
RMB

2022
RMB

2023

RMB

US$
(Note 2.5)

18,667  
118,436  

35,707  
9,888  

22,089  
11,108  

3,111
1,565

9,077
—

6,679  
4,793  
—

697  
—

7,124  
—  

17,729

—  
704

1,226  
—  
—

—
99

173
—
—

The accompanying notes are an integral part of these consolidated financial statements.

F-12

    
    
    
    
 
   
   
   
  
 
 
 
   
 
 
  
 
 
   
   
   
  
 
 
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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

1. PRINCIPAL ACTIVITIES AND ORGANIZATION

I-Mab (the “Company”) was incorporated in the Cayman Islands on June 30, 2016 as an exempted company with limited liability under
the Companies Act of the Cayman Islands. On January 17, 2020, the Company became listed on the Nasdaq Global Market in the United
States. The Company and its subsidiaries (together the “Group”) are principally engaged in discovering and developing transformational
biologics in the fields of immuno-oncology and immuno-inflammation diseases in the People’s Republic of China (the “PRC”) and other
countries and regions.

On February 6, 2024, the Group entered into definitive agreements with I-Mab Hangzhou and a group of China-based investors. Pursuant
to  the  definitive  agreements,  the  Group  will  transfer  100%  of  the  outstanding  equity  interest  in  I-Mab  Shanghai,  a  wholly  owned
subsidiary  of  the  Company  that  operates  the  Company’s  business  in  China  to  I-Mab  Hangzhou  for  an  aggregate  consideration  of  the
RMB equivalent of up to US$80 million, contingent on the I-Mab Hangzhou’s achievement of certain future regulatory and sales-based
milestone events. Given the nature of the transaction, it is considered as a non-adjusting subsequent event and its impact is therefore not
considered as of December 31, 2023. Details of the transaction please refer to Note 22.

As of December 31, 2023, the Company’s principal subsidiaries are as follows:

Subsidiaries
I-Mab  Biopharma  Hong  Kong
Hong

(“I-Mab 

Limited 
Kong”)

Place of
incorporation

Date of
incorporation or
acquisition

    Percentage     
of direct
or indirect
ownership
by the
Company

Principal activities

  Hong Kong

July 8, 2016  

100 %  

Investment holding

I-Mab Biopharma Co., Ltd. (“I-

Mab Shanghai”)

I-Mab  Bio-tech  (Tianjin)  Co.,

Ltd. (“I-Mab Tianjin”)
I-Mab Biopharma US Ltd.

PRC

August 24, 2016  

100 %   Research and development of innovative medicines

PRC
U.S.

July 15, 2017  
February 28, 2018  

100 %   Research and development of innovative medicines
100 %   Research and development of innovative medicines

2. PRINCIPAL ACCOUNTING POLICIES

2.1 Basis of presentation

The  accompanying  consolidated  financial  statements  of  the  Group  have  been  prepared  in  accordance  with  the  accounting  principles
generally accepted in the United States of America (“U.S. GAAP”).

Significant  accounting  policies  followed  by  the  Group  in  the  preparation  of  the  accompanying  consolidated  financial  statements  are
summarized below.

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.2 Basis of consolidation

The  accompanying  consolidated  financial  statements  reflect  the  accounts  of  the  Company  and  all  of  its  subsidiaries  in  which  a
controlling interest is maintained. All inter-company balances and transactions have been eliminated in consolidation.

The Group consolidates entities in which it has a controlling financial interest based on either the variable interest entity (VIE) or voting
interest model. The Group is required to first apply the VIE model to determine whether it holds a variable interest in an entity, and if so,
whether the entity is a VIE. If the Group determines it does not hold a variable interest in a VIE, it then applies the voting interest model.
Under the voting interest model, the Group consolidates an entity when it holds a majority voting interest in an entity.

The  Company  accounts  for  investments  in  which  it  has  significant  influence  but  not  a  controlling  financial  interest  using  the  equity
method of accounting (see Note 8).

VIE Model

An entity is considered to be a VIE if any of the following conditions exist: (a) the total equity investment at risk is not sufficient to
permit  the  entity  to  finance  its  activities  without  additional  subordinated  financial  support,  (b)  the  holders  of  the  equity  investment  at
risk, as a group, lack either the direct or indirect ability through voting rights or similar rights to make decisions that have a significant
effect on the success of the entity or the obligation to absorb the entity’s expected losses or right to receive the entity’s expected residual
returns, or (c) the voting rights of some equity investors are disproportionate to their obligation to absorb losses of the entity, their rights
to receive returns from an entity, or both and substantially all of the entity’s activities either involve or are conducted on behalf of an
investor with disproportionately few voting rights.

Under  the  VIE  model,  limited  partnerships  are  considered  VIE  unless  the  limited  partners  hold  substantive  kick-out  or  participating
rights over the general partner. The Group consolidates entities that are VIEs when the Group determines it is the primary beneficiary.
Generally, the primary beneficiary of a VIE is a reporting entity that has (a) the power to direct the activities that most significantly affect
the  VIE’s  economic  performance,  and  (b)  the  obligation  to  absorb  losses  of,  or  the  right  to  receive  benefits  from,  the  VIE  that  could
potentially be significant to the VIE.

As of December 31, 2023, the Group determined that the one entity subject to the consolidation guidance is a VIE for which the Group is
not the primary beneficiary.

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.3 Use of estimates

The  preparation  of  the  consolidated  financial  statements  in  conformity  with  U.S.  GAAP  requires  management  to  make  estimates  and
assumptions that affect the reported amounts of assets and liabilities and the disclosures of contingent assets and liabilities at the date of
the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Estimates are used
when accounting for amounts recorded in connection with acquisitions, including initial fair value determinations of assets and liabilities
and other intangible assets as well as subsequent fair value measurements. Additionally, estimates are used in determining items such as
fair value measurements of short-term investments and put right liabilities, impairment of other receivables, long-lived assets, intangible
assets  and  goodwill,  useful  lives  of  property,  equipment  and  software,  recognition  of  right-of-use  assets  and  lease  liabilities,  accrued
research and development expenses, cost-to-cost measure of progress for over time performance obligations, variable consideration in
collaboration revenue arrangements, valuation of share-based compensation arrangements, deferred tax assets valuation allowances and
provision for ongoing litigation. Management bases the estimates on historical experience, known trends and various other assumptions
that  are  believed  to  be  reasonable,  the  results  of  which  form  the  basis  for  making  judgments  about  the  carrying  values  of  assets  and
liabilities. Actual results could differ from those estimates.

2.4 Fair value measurements

Financial  assets  and  liabilities  of  the  Group  primarily  comprise  of  cash  and  cash  equivalents,  restricted  cash,  short-term  investments,
other  receivables,  short-term  borrowings,  accruals  and  other  payables,  contract  liabilities,  put  right  liabilities  and  other  non-current
liabilities. As of December 31, 2022 and 2023, except for short-term investments and put right liabilities, the carrying values of these
financial assets and liabilities approximated their fair values because of their generally short maturities. The Group reports short-term
investments and put right liabilities at fair value at each balance sheet date and changes in fair value are reflected in the consolidated
statements of comprehensive loss.

The Group measures its financial assets and liabilities using inputs from the following three levels of the fair value hierarchy. The three
levels are as follows:

Level 1 inputs are unadjusted quoted prices in active markets for identical assets that the management has the ability to access at the
measurement date.

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.4 Fair value measurements (continued)

Level 2 inputs include quoted prices for similar assets in active markets, quoted prices for identical or similar assets in markets that are
not  active,  inputs  other  than  quoted  prices  that  are  observable  for  the  asset  (i.e.,  interest  rates,  yield  curves,  etc.),  and  inputs  that  are
derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).

Level 3 includes unobservable inputs that reflect the management’s assumptions about the assumptions that market participants would
use in pricing the asset. The management develops these inputs based on the best information available, including the own data.

Assets and liabilities measured at fair value on a recurring basis

The  Group  measures  its  short-term  investments  and  put  right  liabilities  at  fair  value  on  a  recurring  basis.  As  the  Group’s  short-term
investments  and  put  right  liabilities  are  not  traded  in  an  active  market  with  readily  observable  prices,  the  Group  uses  significant
unobservable inputs to measure the fair value of short-term investments and put right liabilities. These instruments are categorized in the
Level 3 valuation hierarchy based on the significance of unobservable factors in the overall fair value measurement.

The following table summarizes the Group’s financial assets and liabilities measured and recorded at fair value on a recurring basis as of
December 31, 2022 and 2023:

Assets:
Short-term investments
Liabilities
Put right liabilities

Assets:
Short-term investments
Liabilities
Put right liabilities

As of December 31, 2022

Active market Observable input

(Level 1)
RMB

(Level 2)
RMB

Non-
 observable input
(Level 3)
RMB

     Total
RMB

—  

—  

—  

—  

235,429   235,429

88,687  

88,687

As of December 31, 2023

Active market  Observable input

(Level 1)
RMB

 (Level 2)
RMB

Non- 
observable input 
(Level 3)
RMB

     Total
RMB

—

—  

—

—  

143,221

143,221

98,110  

98,110

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.4 Fair value measurements (continued)

The roll forward of major Level 3 financial assets and financial liabilities are as follows:

Fair value of Level 3 financial assets and liabilities as of December 31, 2021
Purchase of short-term and other investments
Disposal of short-term and other investments
Recognition of put right liabilities
Fair value changes
Currency translation differences
Fair value of Level 3 financial assets and liabilities as of December 31, 2022
Purchase of short-term investments
Disposal of short-term investments
Fair value changes
Currency translation differences
Fair value of Level 3 financial assets and liabilities as of December 31, 2023

Short-term     
 investments

Put right
 liabilities

753,164
7,407,332  
(7,911,518) 

—

(13,549) 
—  
235,429  
885,580  
(1,005,249) 
26,461  
1,000  
143,221  

96,911
—
—
17,729
(34,260)
8,307
88,687
—
—
7,888
1,535
98,110

See Note 8 for additional information about Level 3 put right liabilities measured at fair value on a recurring basis for the year ended
December 31, 2022 and 2023.

2.5 Foreign currency translation

The Group uses Chinese Renminbi (“RMB”) as its reporting currency. The United States Dollar (“US$”) is the functional currency of the
Group’s  entities  incorporated  in  the  Cayman  Islands,  the  United  States  of  America  (“U.S.”)  and  Hong  Kong,  and  the  RMB  is  the
functional currency of the Company’s PRC subsidiaries.

Transactions denominated in other than the functional currencies are translated into the functional currency of the entity at the exchange
rates prevailing on the transaction dates. Assets and liabilities denominated in other than the functional currencies are translated at the
balance sheet date exchange rate. The resulting exchange differences are recorded in the consolidated statements of comprehensive loss.

The consolidated financial statements of the Group are translated from the functional currency to the reporting currency, RMB. Assets
and  liabilities  of  the  subsidiaries  are  translated  into  RMB  using  the  exchange  rate  in  effect  at  each  balance  sheet  date.  Income  and
expenses are translated at the average exchange rates prevailing for the year. Foreign currency translation adjustments arising from these
are reflected in the accumulated other comprehensive loss. The exchange rates used for translation on December 31, 2022 and 2023 were
US$1.00 = RMB6.9646 and RMB7.0827 respectively, representing the index rates stipulated by the People’s Bank of China.

Translations of balances in the consolidated balance sheets, consolidated statements of comprehensive loss, consolidated statements of
changes in shareholders’ equity and consolidated statements of cash flows from RMB into US$ as of and for the year ended December
31, 2023 are solely for the convenience of the readers and were calculated at the rate of US$1.00=RMB7.0999, representing the noon
buying rate in The City of New York for cable transfers of RMB as certified for customs purposes by the Federal Reserve Bank of New
York  on  December  29,  2023.  No  representation  is  made  that  the  RMB  amounts  could  have  been,  or  could  be,  converted,  realized  or
settled  into  US$  at  that  rate  on  December  31,  2023,  or  at  any  other  rate.  The  US$  convenience  translation  is  not  required  under  U.S.
GAAP and all US$ convenience translation amounts in the accompanying consolidated financial statements are unaudited.

F-17

    
 
 
 
 
 
 
 
 
 
 
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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.6 Cash and cash equivalents

Cash  and  cash  equivalents  consist  of  cash  on  hand  and  bank  deposits,  which  are  unrestricted  as  to  withdrawal  and  use.  The  Group
considers  all  highly  liquid  investments  with  an  original  maturity  date  of  three  months  or  less  at  the  date  of  purchase  to  be  cash
equivalents.

2.7 Restricted cash

Restricted  cash  consists  of  the  guarantee  deposits  held  in  a  designated  bank  account  as  security  deposits  under  bank  borrowing,  bank
notes agreements and other bank financing arrangement. Such restricted cash will be released when the Group repays the related bank
borrowings, bank notes and other bank financing. The Group has presented restricted cash separately from cash and cash equivalents in
the consolidated balance sheets.

Cash,  cash  equivalents  and  restricted  cash  as  reported  in  the  consolidated  statement  of  cash  flows  are  presented  separately  on  the
consolidated balance sheet as follows:

Cash and cash equivalents
Short-term restricted cash
Long-term restricted cash
Total

2.8 Short-term investments

As of December 31,

2022
RMB

3,214,005  
96,764
—

3,310,769  

2023
RMB
2,141,445
—
58,913
2,200,358

Short-term investments represent the investments issued by commercial banks with a variable interest rate indexed to the performance of
underlying assets within one year, or the fixed term deposits held in commercial banks with a fixed interest rate over three months and
within  one  year.  These  investments  are  stated  at  fair  value.  Changes  in  the  fair  value  are  reflected  in  the  consolidated  statements  of
comprehensive loss.

2.9 Property, equipment and software

Property,  equipment  and  software  are  stated  at  cost  less  accumulated  depreciation  and  amortization.  Depreciation  and  amortization  is
computed using the straight-line method over the following estimated useful lives, taking into account of any estimated residual value:

Laboratory equipment
Software
Office furniture and equipment
Delivery equipment
Leasehold improvements

     3 to 10 years
1 to 5 years
5 years
4 years
Lesser of useful life or lease term

The  Group  recognizes  the  gain  or  loss  on  the  disposal  of  property,  equipment  and  software  in  the  consolidated  statements  of
comprehensive loss.

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.10 Intangible assets

Intangible  assets  acquired  in  a  business  combination  that  are  used  in  research  and  development  activities,  or  in-process  research  and
development (IPR&D) intangible assets, are considered indefinite lived until the completion or abandonment of the associated research
and  development  efforts.  During  the  period  that  those  assets  are  considered  indefinite  lived,  they  are  not  amortized  but  are  tested  for
impairment annually and more frequently if events or changes in circumstances indicate that it is more likely than not that the asset is
impaired.  If  after  assessing  the  totality  of  events  and  circumstances  and  their  potential  effect  on  significant  inputs  to  the  fair  value
determination the Group determines that it is not more likely than not that the indefinite-lived intangible is impaired, then the entity shall
calculate the fair value of the intangible asset and perform the quantitative impairment test by comparing the fair value of the asset with
its carrying amount. If the carrying amount exceeds its fair value, an impairment loss is recognized in an amount equal to that excess. For
IPR&D assets, the impairment loss is recognized in research and development expenses in the consolidated statements of comprehensive
loss.

Intangible  assets  with  finite  useful  lives  are  amortized  over  their  useful  lives.  The  useful  life  of  an  intangible  asset  is  the  period  over
which the asset is expected to contribute directly or indirectly to the future cash flows of the Group. The Group uses the straight-line
amortization  method  when  the  economic  benefits  of  the  intangible  assets  are  consumed  or  otherwise  used  up  cannot  be  reliably
determined.  In  particular,  the  Group  amortizes  the  contract  related  intangible  assets  with  finite  useful  lives  over  10  to  20  years  on  a
straight-line basis in accordance with the economic life of the out-licensed patent. Intangible assets subject to amortization are reviewed
for  impairment  whenever  events  or  changes  in  circumstances  indicate  that  the  carrying  amount  of  an  intangible  asset  may  not  be
recoverable. If circumstances require an intangible asset be tested for possible impairment, the Group first compares undiscounted cash
flows expected to be generated by that asset to its carrying amount. If the carrying amount is not recoverable on an undiscounted cash
flow basis, an impairment is recognized to the extent that the carrying amount exceeds its fair value. For intangible assets with finite
useful life, the impairment loss is recognized in cost of revenues in the consolidated statements of comprehensive loss.

2.11 Impairment of long-lived assets

Long-lived  assets,  such  as  property,  plant,  and  software,  and  intangible  assets  subject  to  amortization,  are  reviewed  for  impairment
whenever  events  or  changes  in  circumstances  indicate  that  the  carrying  amount  of  an  asset  may  not  be  recoverable.  If  circumstances
require  a  long-lived  asset  or  asset  group  be  tested  for  possible  impairment,  the  Company  first  compares  undiscounted  cash  flows
expected to be generated by that asset or asset group to its carrying amount. If the carrying amount of the long-lived asset or asset group
is not recoverable on an undiscounted cash flow basis, an impairment is recognized to the extent that the carrying amount exceeds its fair
value. Fair value is determined through various valuation techniques including discounted cash flow models, quoted market values and
third-party  independent  appraisals,  as  considered  necessary.  For  the  years  ended  December  31,  2021,  2022  and  2023,  there  was  no
impairment of the value of the Group’s long-lived assets.

2.12 Goodwill

Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not
individually identified and separately recognized. The Group allocates the cost of an acquired entity to the assets acquired and liabilities
assumed based on their estimated fair values at the date of acquisition. The excess of the purchase price for acquisitions over the fair
value of the net assets acquired, including other intangible assets, is recorded as goodwill. Goodwill is not amortized, but impairment of
goodwill  is  tested  on  at  least  an  annual  basis  or  whenever  events  or  changes  in  circumstances  indicate  that  the  carrying  value  of  the
reporting unit exceeds its fair value.

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.12 Goodwill (continued)

The Group first assesses qualitative factors to determine whether it is more likely than not that the fair value of the Group’s reporting unit
is less than its carrying amount, including goodwill. The qualitative assessment includes the Group’s evaluation of relevant events and
circumstances affecting the Group’s single reporting unit, including macroeconomic, industry, market conditions and the Group’s overall
financial performance. If qualitative factors indicate that it is more likely than not that the Group’s reporting unit’s fair value is less than
its  carrying  amount,  then  the  Group  will  perform  the  quantitative  impairment  test  by  comparing  the  reporting  unit’s  carrying  amount,
including  goodwill,  to  its  fair  value.  If  the  carrying  amount  of  the  reporting  unit  exceeds  its  fair  value,  an  impairment  loss  will  be
recognized in an amount equal to that excess. For the years ended December 31, 2021, 2022 and 2023, the Group recognized goodwill
impairment with amount of nil, nil and RMB 162,574, respectively (Note 7).

2.13 Long-term investments

The Group’s long-term investments include equity investments in an affiliate in which it does not have a controlling financial interest,
but has the ability to exercise significant influence over the operating and financial policies of the investee. The investment is accounted
for using the equity method of accounting in accordance with ASC topic 323, Investments—Equity Method and Joint Ventures (“ASC
323”). Under the equity method, the Group initially records its investments at fair value. The Group subsequently adjusts the carrying
amount  of  the  investment  to  recognize  the  Group’s  proportionate  share  of  the  equity  investee’s  net  income  or  loss  after  the  date  of
investment. When the liquidation rights and priorities as defined by an equity investment agreement differ from what is reflected by the
underlying percentage ownership interests, applying the percentage ownership interest to U.S. GAAP net income in order to determine
earnings or losses does not accurately represent the income allocation and cash flow distributions that will ultimately be received by the
investors.  As  such,  for  this  type  of  investments,  the  Group  uses  the  Hypothetical  Liquidation  at  Book  Value  (“HLBV”)  method  for
allocating earnings or losses of the equity method investee. The HLBV method is considered as a balance sheet approach. Specifically, a
calculation is prepared at each balance sheet date to determine the amount that the Group would receive if an equity investment entity
were  to  liquidate  all  of  its  assets  (as  valued  in  accordance  with  U.S.  GAAP)  and  distribute  that  cash  to  the  investors  based  on  the
contractually defined liquidation priorities. The difference between the calculated liquidation distribution amounts at the beginning and
the end of the reporting period, after adjusting for capital contributions and distributions, is the Group’s share of the earnings or losses
from the equity investment for the period.

As  it  relates  to  the  share-based  compensation  awarded  by  an  equity  method  investee  to  its  own  employees,  the  Group  recognizes  its
proportionate share of the compensation expense over the vesting period, included in the equity in loss of affiliate in the consolidated
statements of comprehensive loss. As it relates to the share-based compensation awarded by the Group to the equity method investee
employees that are based on the Group’s stock, when the other investors do not provide proportionate value to the investee or the Group
does  not  receive  any  consideration,  the  Group  expenses  the  entire  cost  associated  with  the  award  in  the  same  period  the  costs  are
recognized  by  the  investee,  to  the  extent  that  the  Group’s  claim  on  the  investee’s  book  value  has  not  been  increased.  The  expenses
recognized by the Group is included in the equity in loss of affiliate in the consolidated statements of comprehensive loss. The Group
discontinues applying the equity method if the carrying amount of the investment is reduced to zero.

The  Group  evaluates  the  equity  method  investment  for  impairment  under  ASC  323.  An  impairment  loss  on  the  equity  method
investments  is  recognized  in  losses  when  the  decline  in  value  is  determined  to  be  other-than-temporary.  No  impairment  charge  was
recognized for the years ended December 31, 2021, 2022 and 2023.

2.14 Revenue recognition

The Group adopted Accounting Standard Codification (“ASC”) 606, Revenue from Contracts with Customers (Topic 606) (“ASC 606”)
for all periods presented. Consistent with the criteria of Topic 606, the Group recognizes revenue to depict the transfer of promised goods
or services to customers in an amount that reflects the consideration to which the entity expects to receive in exchange for those goods or
services.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.14 Revenue recognition (continued)

Under ASC 606, an entity recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects
the consideration that the entity expects to receive in exchange for those goods or services. An the entity performs the following five
steps  to  account  for  the  arrangements  that  an  entity  determines  are  within  the  scope  of  ASC  606:  (i)  identify  the  contract(s)  with  a
customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price, including variable consideration,
if any; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity
satisfies a performance obligation.

Once a contract is determined to be within the scope of ASC 606 at contract inception, the Group audits the contract to determine which
performance obligations it must deliver and which of these performance obligations are distinct. The Group recognizes as revenue the
amount of the transaction price that is allocated to each performance obligation when that performance obligation is satisfied or as it is
satisfied.

Collaboration revenue

At contract inception, we analyze its collaboration arrangements to assess whether they are within the scope of ASC 808, Collaborative
Arrangements (“ASC 808”) to determine whether such arrangements involve joint operating activities performed by parties that are both
active participants in the activities and exposed to significant risks and rewards dependent on the commercial success of such activities.
For collaboration arrangements within the scope of ASC 808 that contain multiple elements, we first determine if the collaboration is
deemed to be within the scope of ASC 808. For any units of account that are reflective of a vendor-customer relationship those units of
account are accounted for within the scope of ASC 606. For any units of account that are not accounted for under ASC 606 and therefore
accounted for pursuant to ASC 808, an appropriate recognition method is determined and applied consistently.

The Group’s collaborative arrangements may contain more than one unit of account, or performance obligation, such as grant of licenses
of  intellectual  property  rights,  promises  to  provide  research  and  development  services  and  other  deliverables.  The  collaborative
arrangements  do  not  include  a  right  of  return  for  any  deliverable.  When  multiple  units  of  account  or  performance  obligations  are
identified within the arrangements, the Group must develop assumptions that require judgment to determine the stand-alone selling price
for each performance obligation identified in the contract. In developing the stand-alone selling price for a performance obligation, the
Group  considers  competitor  pricing  for  a  similar  or  identical  product,  market  awareness  of  and  perception  of  the  product,  expected
product  life  and  current  market  trends.  In  general,  the  consideration  allocated  to  each  performance  obligation  is  recognized  when  the
respective obligation is satisfied either by delivering a good or providing a service, limited to the consideration that is not constrained.

Licenses  of  Intellectual  Property:Upfront  non-refundable  payments  for  licensing  the  Group’s  intellectual  property  are  evaluated  to
determine if the license is distinct from the other performance obligations identified in the arrangement. For the license that is determined
to be distinct, the Group recognizes revenues in the amount of non-refundable, up-front fees allocated to the license at a point in time,
upon which the license is transferred to the licensee and the licensee is able to use and benefit from the license.

Research and Development Services: The portion of the transaction price allocated to research and development services performance
obligations  is  deferred  and  recognized  as  revenue  over  time  as  delivery  or  performance  of  such  services  provided  to  the  Group’s
customers occurs.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.14 Revenue recognition (continued)

Collaboration revenue (continued)

Milestone  Payments:  At  the  inception  of  each  arrangement  that  includes  development,  commercialization,  and  regulatory  milestone
payments,  the  Group  evaluates  whether  the  milestones  are  considered  probable  of  being  reached  and  to  the  extent  that  a  significant
reversal of cumulative revenue would not occur in future periods, estimates the amount to be included in the transaction price using the
most likely amount method. The transaction price is then allocated to each performance obligation on a relative stand-alone selling price
basis, for which the Group recognizes revenue as or when the performance obligations under the contract are satisfied. At the end of each
subsequent reporting period, the Group re-evaluates the probability of achieving such development milestones and any related constraint,
and if necessary, adjust the estimate of the overall transaction price. Any resulting adjustment is recorded on a cumulative catch-up basis,
which would affect the Group’s reported revenues and earnings in the period of the adjustment.

Royalties: For arrangements that include sales-based royalties, including milestone payments based on the level of sales, and the license
is deemed to be the predominant item to which the sales-based royalties or milestone payments relate, the Group recognizes revenue at
the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated
has been satisfied (or partially satisfied).

Supply of investigational products

Revenue from supply of investigational products is recognized when there is a transfer of control from the Group to the customer. The
Group determines transfer of control based on when the product is delivered, and title passed to the customer. Sales are generally made
with a limited right of return under certain conditions. Revenues are recorded net of provisions for sales discounts and returns.

Contract assets and liabilities

Contract assets primarily represent revenue earnings over time that are not yet billable based on the terms of the contracts. The Group
does not have impairment losses associated with contracts with customers for the years ended December 31, 2021, 2022 and 2023.

Contract liabilities consist of fees invoiced or paid by the Group’s customers for which the associated performance obligations have not
been satisfied and revenue has not been recognized based on the Group’s revenue recognition criteria described above.

Contract assets and contract liabilities are reported in a net position on an individual contract basis at the end of each reporting period.
Contract assets are classified as current in the consolidated balance sheet when the Group expects to complete the related performance
obligations and invoice the customers within one year of the balance sheet date, and as long-term when the Group expects to complete
the related performance obligations and invoice the customers more than one year out from the balance sheet date. Contract liabilities are
classified as current in the consolidated balance sheet when the revenue recognition associated with the related customer payments and
invoicing is expected to occur within one year of the balance sheet date and as long-term when the revenue recognition associated with
the related customer payments and invoicing is expected to occur in more than one year from the balance sheet date.

Cost-to-cost measure of progress for over time performance obligations

Under the Group’s certain licensing and collaboration arrangement entered into with a business partner, the Group recognized revenue
using  the  cost-to-cost  measure  of  progress  for  its  over  time  performance  obligations  as  this  recognition  best  depicts  the  transfer  of
benefits to its business partner as costs are incurred under the licensing and collaboration arrangement. Under the cost-to-cost measure of
progress method, the extent of progress towards completion is measured based on the ratio of costs incurred to-date to the total estimated
costs for completion of the performance obligations. The Group applied significant judgment in estimating the total estimated costs for
completion of performance obligations under such licensing and collaboration arrangement.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.15 Value-added-tax (“VAT”) recoverable and surcharges

Value  added  tax  recoverable  represent  amounts  paid  by  the  Group  for  purchases.  The  surcharges  (i.e.,  Urban  construction  and
maintenance  tax,  educational  surtax,  local  educational  surtax),  vary  from  6%  to  12%  of  the  value-added-tax  depending  on  the  tax-
payer’s  location.  The  deductible  input  VAT  balance  is  included  in  the  prepayments  and  other  receivables  in  the  consolidated  balance
sheets, and VAT payable balance is recorded in the accruals and other payables in the consolidated balance sheets.

2.16 Research and development expenses

Elements  of  research  and  development  expenses  primarily  include  (1)  payroll  and  other  related  expenses  of  personnel  engaged  in
research  and  development  activities,  (2)  in-licensed  patent  rights  fee  of  exclusive  development  rights  of  drugs  granted  to  the  Group,
(3) expenses related to preclinical testing of the Group’s technologies under development and clinical trials such as payments to contract
research organizations (“CRO”), investigators and clinical trial sites that conduct the clinical studies, (4) expenses to develop the product
candidates, including raw materials and supplies, product testing, depreciation, and facility related expenses, and (5) other research and
development expenses. Research and development expenses are charged to expenses as incurred when these expenditures are used for
the Group’s research and development activities and have no alternative future uses.

The  Group  applied  significant  judgment  in  estimating  the  progress  of  its  research  and  development  activities  and  completion  of  or
likelihood of achieving milestone events per underlying agreements when estimating the research and development costs to be accrued at
each  reporting  period  end.  The  process  of  estimating  its  research  and  development  expenses  involves  reviewing  open  contracts  and
purchase orders, communicating with personnel to identify services that have been performed on its behalf and estimating the level of
service performed and the associated costs incurred for the services when the Group has not yet been invoiced or otherwise notified of
the actual costs.

The Group has acquired rights to develop and commercialize product candidates. Upfront payments that relate to the acquisition of a new
drug  compound,  as  well  as  pre-commercial  milestone  payments,  are  immediately  expensed  as  acquired  in-process  research  and
development in the period in which they are incurred, provided that the new drug compound does not also include processes or activities
that would constitute a “business” as defined under U.S. GAAP, the drug has not achieved regulatory approval for marketing and, absent
obtaining  such  approval,  has  no  established  alternative  future  use.  Milestone  payments  made  to  third  parties  subsequent  to  regulatory
approval  are  capitalized  as  intangible  assets  and  amortized  over  the  estimated  remaining  useful  life  of  the  related  product.  All
development  expenditures  are  recognized  in  profit  or  loss  when  incurred,  as  long  as  the  conditions  enabling  capitalization  of
development expenses as an asset have not yet been met.

2.17 Leases

In  accordance  with  ASC  842  adopted  on  January  1,  2019,  the  Group  determines  if  an  arrangement  is  a  lease  at  inception.  Operating
leases are included in operating lease right-of-use (“ROU”) assets, operating lease liability, and operating lease liability, non-current in
the Group’s consolidated balance sheets. The Group does not have any finance leases since the adoption date.

ROU assets represent the Group’s right to use an underlying asset for the lease term and lease liabilities represent the Group’s obligation
to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based
on the present value of lease payments over the lease term. When determining the lease term, the Group includes options to extend or
terminate the lease when it is reasonably certain that it will exercise that option, if any. As the Group’s leases do not provide an implicit
rate,  the  Group  uses  its  incremental  borrowing  rate,  which  it  calculates  based  on  the  credit  quality  of  the  Group  and  by  comparing
interest rates available in the market for similar borrowings, and adjusting this amount based on the impact of collateral over the term of
each lease.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.17 Leases (continued)

The Group has elected to adopt the following lease policies in conjunction with the adoption of ASU 2016-02: (i)elect for each lease not
to separate non-lease components from lease components and instead to account for each separate lease component and the non-lease
components associated with that lease component as a single lease component; (ii) for leases that have lease terms of 12 months or less
and  does  not  include  a  purchase  option  that  is  reasonably  certain  to  exercise,  the  Group  elected  not  to  apply  ASC  842  recognition
requirements;  and  (iii)  the  Group  elected  to  apply  the  package  of  practical  expedients  for  existing  arrangements  entered  into  prior  to
January 1, 2019 to not reassess (a) whether an arrangement is or contains a lease, (b) the lease classification applied to existing leases,
and (c) initial direct costs.

2.18 Government subsidies

Government subsidies primarily consist of financial subsidies received from provincial and local governments for operating a business in
their  jurisdictions  and  compliance  with  specific  policies  promoted  by  the  governments.  The  Group’s  PRC  based  subsidiaries  received
government  subsidies  from  certain  local  governments.  The  Group’s  government  subsidies  consist  of  specific  subsidies  and  other
subsidies. Specific subsidies are subsidies that the local government has set certain conditions for the subsidies. Other subsidies are the
subsidies that the local government has not set any conditions and are not tied to future trends or performance of the Group, receipt of
such subsidy income is not contingent upon any further actions or performance of the Group and the amounts do not have to be refunded
under any circumstances. For the years ended December 31, 2021, 2022 and 2023, no specific subsidies were received by the Group.
Other subsidies of RMB9,216, RMB25,470 and RMB5,354 for the years ended December 31, 2021, 2022 and 2023, respectively, are
recognized as other income upon receipt as further performance by the Group is not required.

2.19 Comprehensive loss

Comprehensive  loss  is  defined  as  the  changes  in  equity  of  the  Group  during  a  period  from  transactions  and  other  events  and
circumstances excluding transactions resulting from investments by owners and distributions to owners. Among other disclosures, ASC
220, Comprehensive Income, requires that all items that are required to be recognized under current accounting standards as components
of comprehensive loss be reported in a financial statement that is displayed with the same prominence as other financial statements. For
each of the periods presented, the Group’s comprehensive loss includes net loss and foreign currency translation adjustments, which are
presented in the consolidated statements of comprehensive loss.

2.20 Share-based compensation

The  Group  grants  restricted  shares  and  stock  options  to  eligible  employees  and  accounts  for  share-based  compensation  in  accordance
with ASC 718, Compensation—Stock Compensation.

Employees’  share-based  compensation  awards,  if  equity-classified,  are  measured  at  the  grant  date  fair  value  of  the  awards  and  are
recognized as expenses over the requisite period of the award, which is generally the vesting term of share-based payment awards.

A change in any of the terms or conditions of share-based awards is accounted for as a modification of the awards. The Group calculates
incremental  compensation  expense  of  a  modification  as  the  excess  of  the  fair  value  of  the  modified  awards  over  the  fair  value  of  the
original awards immediately before its terms are modified at the modification date. For vested awards, the Group recognizes incremental
compensation cost in the period when the modification occurs. For awards not being fully vested, the Group recognizes the sum of the
incremental  compensation  expense  and  the  remaining  unrecognized  compensation  expense  for  the  original  awards  over  the  remaining
requisite service period after modification.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.20 Share-based compensation (continued)

Share-based compensation in relation to the restricted shares is measured based on the fair market value of the Group’s ordinary shares at
the  grant  date  of  the  award.  Prior  to  the  listing,  estimation  of  the  fair  value  of  the  Group’s  ordinary  shares  involves  significant
assumptions that might not be observable in the market, and a number of complex and subjective variables, including discount rate, and
subjective  judgments  regarding  the  Group’s  projected  financial  and  operating  results,  its  unique  business  risks,  the  liquidity  of  its
ordinary shares and its operating history and prospects at the time the grants are made. Share-based compensation in relation to the share
options is estimated using the Binominal Option Pricing Model. The determination of the fair value of share options is affected by the
share price of the Group’s ordinary shares as well as the assumptions regarding a number of complex and subjective variables, including
the expected share price volatility, risk-free interest rate, exercise multiple and expected dividend yield. In addition, the forfeiture rate is
estimated  based  on  an  analysis  of  the  Group’s  actual  forfeitures  and  the  appropriateness  of  the  forfeiture  rate  will  continue  to  be
evaluated based on the actual forfeiture experience, analysis of employee turnover and other factors. The fair value of these awards was
determined with the assistance from an independent third-party valuation firm.

2.21 Income taxes

The Group accounts for income taxes under the asset and liability method. Under the asset and liability method, deferred tax assets and
liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of
existing  assets  and  liabilities  and  their  respective  tax  bases  and  operating  loss  and  tax  credit  carryforwards.  Deferred  tax  assets  and
liabilities  are  measured  using  the  enacted  tax  rates  that  expected  to  apply  to  taxable  income  in  the  years  in  which  those  temporary
differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized
in income in the period that includes the enactment date. A valuation allowance is recorded if it is more likely than not that some portion
or all of the deferred income tax assets will not be utilized in the foreseeable future.

The  Group  evaluates  its  uncertain  tax  positions  using  the  provisions  of  ASC  740-10,  Income  Taxes,  which  prescribes  a  recognition
threshold  that  a  tax  position  is  required  to  meet  before  being  recognized  in  the  financial  statements.  The  Group  recognizes  in  the
financial statements the benefit of a tax position which is ‘‘more likely than not’’ to be sustained under examination based solely on the
technical  merits  of  the  position  assuming  a  review  by  tax  authorities  having  all  relevant  information.  Tax  positions  that  meet  the
recognition threshold are measured using a cumulative probability approach, at the largest amount of tax benefit that has a greater than
fifty  percent  likelihood  of  being  realized  upon  settlement.  It  is  the  Group’s  policy  to  recognize  interest  and  penalties  related  to
unrecognized tax benefits, if any, as a component of income tax expense.

2.22 Borrowings

Borrowings are recognized initially at fair value, net of transaction costs incurred. Borrowings are subsequently stated at amortized cost.
Any  difference  between  the  proceeds  (net  of  transaction  costs)  and  the  redemption  value  is  recognized  as  interest  expense  in  the
consolidated statements of comprehensive loss over the period of the borrowings, using the effective interest method.

2.23 Business combination

The  Group  accounts  for  its  business  combinations  using  the  acquisition  method  of  accounting  in  accordance  with  ASC  topic
805, Business Combinations (“ASC 805”). The acquisition method of accounting requires all of the following steps: (i) identifying the
acquirer, (ii) determining the acquisition date, (iii) recognizing and measuring the identifiable assets acquired, the liabilities assumed, and
any  noncontrolling  interest  in  the  acquiree,  and  (iv)  recognizing  and  measuring  goodwill  or  a  gain  from  a  bargain  purchase.  The
consideration transferred in a business combination is measured as the aggregate of the fair values at the date of exchange of the assets
given, liabilities incurred, and equity instruments issued as well as the contingent considerations and all contractual contingencies as of
the acquisition date.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.23 Business combination (continued)

The  Group  allocates  the  fair  value  of  purchase  consideration  to  the  tangible  assets  acquired,  liabilities  assumed  and  intangible  assets
acquired  based  on  their  estimated  fair  values.  The  excess  of  the  fair  value  of  purchase  consideration  over  the  fair  values  of  these
identifiable  assets  and  liabilities  is  recorded  as  goodwill.  Such  valuations  require  management  to  make  significant  estimates  and
assumptions, especially with respect to intangible assets. Significant estimates in valuing certain intangible assets may include, but are
not  limited  to,  future  expected  cash  flows  from  acquired  assets,  timing  and  probability  of  success  of  clinical  events  and  regulatory
approvals,  and  assumptions  on  useful  lives  of  the  patents  and  discount  rates.  Management’s  estimates  of  fair  value  are  based  upon
assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ
from estimates. Additional information, such as that related to income tax and other contingencies, existing as of the acquisition date but
unknown to us may become known during the remainder of the measurement period, not to exceed one year from the acquisition date,
which may result in changes to the amounts and allocations recorded.

Acquisitions  that  do  not  meet  the  accounting  definition  of  a  business  combination  are  accounted  for  as  asset  acquisitions.  For
transactions determined to be asset acquisitions, the Group allocates the total cost of the acquisition, including transaction costs, to the
net assets acquired based on their relative fair values.

2.24 Segment information

In accordance with ASC 280, Segment Reporting, the Group’s chief operating decision maker, the Chief Executive Officer, reviews the
consolidated results when making decisions about allocating resources and assessing performance of the Group as a whole and hence, the
Group  has  only  one  reportable  segment.  The  Group  does  not  distinguish  between  markets  or  segments  for  the  purpose  of  internal
reporting.  As  the  Group’s  long-lived  assets  are  substantially  located  in  and  derived  from  the  PRC,  no  geographical  segments  are
presented.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

2. PRINCIPAL ACCOUNTING POLICIES (CONTINUED)

2.25 Loss per share

Basic loss per share is computed by dividing net loss attributable to ordinary shareholders by the weighted average number of ordinary
shares outstanding during the period. Diluted loss per share is calculated by dividing net loss attributable to ordinary shareholders by the
weighted average number of ordinary and dilutive ordinary equivalent shares outstanding during the period. Ordinary equivalent shares
consist of shares issuable upon the exercise of share options using the treasury stock method and shares issuable upon the issuance of
ordinary  shares  for  restricted  shares  units  using  the  treasury  stock  method.  Ordinary  equivalent  shares  are  not  included  in  the
denominator of the diluted loss per share calculation when inclusion of such shares would be anti-dilutive.

2.26 Adopted accounting pronouncements

In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805) — Accounting for Contract Assets and Contract
Liabilities  from  Contracts  with  Customers  (“ASU  2021-08”).  It  requires  issuers  to  apply  ASC  606  Revenue  from  Contracts  with
Customers  to  recognize  and  measure  contract  assets  and  contract  liabilities  from  contracts  with  customers  acquired  in  a  business
combination. ASU 2021-08 is effective for the Company from January 1, 2023, with early adoption permitted. The Company adopted
this from January 1, 2023, which did not have a material impact on the Group’s consolidated financial statements.

2.27 Recent accounting pronouncements

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740). The standard requires disaggregation of the effective rate
reconciliation into standard categories, enhances disclosure of income taxes paid, and modifies other income tax-related disclosures. The
standard is effective for the Company from January 1, 2025, with early adoption permitted. The ASU is currently not expected to have a
material impact on the Group’s consolidated financial statements.

In November 2023, the FASB issued ASU 2023-07 Segment Reporting - Improving Reportable Segment Disclosures (Topic 280).
The  standard  requires  disclosures  to  include  significant  segment  expenses  that  are  regularly  provided  to  the  chief  operating  decision
maker (CODM), a description of other segment items by reportable segment, and any additional measures of a segment’s profit or loss
used by the CODM when deciding how to allocate resources. The ASU also requires all annual disclosures currently required by Topic
280 to be included in interim periods. ASU 2023-07 is effective for the Company from January 1, 2024, with early adoption permitted
and requires retrospective application to all prior periods presented in the financial statements. The ASU is currently not expected to have
a material impact on the Group’s consolidated financial statements.

F-27

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

3. PREPAYMENTS AND OTHER RECEIVABLES

Prepayments:
– Prepayments to CRO vendors
– Prepayments for stock repurchase
– Prepayments for other services
– Prepayments to an affiliate (Note 19)
Value-added tax recoverable
Deposits
Other receivables

4. PROPERTY, EQUIPMENT AND SOFTWARE

Property, equipment and software consist of the following:

Cost
Laboratory equipment
Leasehold improvement
Software
Office furniture and equipment
Delivery equipment
Total property, equipment and software

As of December 31, 

2022
RMB

RMB

2023
     US$ (Note 2.5)

32,960  

—
1,321  
8,231  
8,197  
4,570  
24,999  
80,278  

5,175  
3,883
5,908  
14,208  
4,696  
4,863  
13,270  
52,003  

729
547
832
2,001
661
685
1,870
7,325

     As of December 31,      
2022
RMB

As of December 31, 
2023
     US$ (Note 2.5)

RMB

52,989  
37,375  
14,506  
11,171  
165

54,377  
33,646  
12,018  
9,967  
—

116,206  

110,008  

7,659
4,739
1,693
1,403
—
15,494

Less: accumulated depreciation and amortization

(61,583) 

(73,497) 

(10,352)

Net book value
Construction in progress
Total net book value of property, equipment and software

54,623  
6,218  
60,841  

36,511  
—  
36,511  

5,142
—
5,142

The total amounts charged to the consolidated statements of comprehensive loss for depreciation and amortization expenses amounted to
approximately RMB13.8 million and RMB25.3 million and RMB23.9 million (US$3.4 million), for the years ended December 31, 2021,
2022 and 2023, respectively.

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5. LEASES

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

As of December 31, 2023, the Company has operating leases recorded on its balance sheet for certain office spaces and facilities that
expire  on  various  dates  through  2031.  When  determining  the  lease  term,  the  Group  includes  options  to  extend  or  terminate  the  lease
when it is reasonably certain that it will exercise that option, if any. All the Group’s leases qualify as operating leases.

Information related to operating leases as of December 31, 2022 and 2023 is as follows (in thousands, except for percentages and years).

Assets

Operating lease right-of-use assets

Liabilities

Operating lease liabilities, current
Operating lease liabilities, non-current
Weighted average remaining lease term (years)
Weighted average discount rate

As of December 31, 

2022
RMB

RMB

2023
     US$ (Note 2.5)

63,125  

46,400  

6,535

23,961  
32,069  
2.9  

21,890  
23,099  
3.4  

3,083
3,253
3.4

5 %  

5 %  

5 %  

Information related to operating lease activities during the years ended December 31, 2021, 2022 and 2023 are as follows:

Operating lease rental expense

Amortization of right-of-use assets
Expense for short-term leases within 12 months
Interest of lease liabilities

Maturities of lease liabilities were as follows:

2024
2025
2026
2027
2028
Thereafter
Total undiscounted lease payments
Less: imputed interest
Total lease liabilities

F-29

For the Year Ended

2021
RMB

2022
RMB

RMB

2023
     US$ (Note 2.5)

16,997  
16  
2,585  
19,598  

34,520  
12  
3,178  
37,710  

25,813  
—  
2,173  
27,986  

3,636
—
306
3,942

RMB

As of December 31, 
2023
     US$ (Note 2.5)
3,232
873
898
924
435
680
7,042
(705)
6,337

22,949  
6,202  
6,378  
6,562  
3,087  
4,825  
50,003  
(5,014) 
44,989  

    
    
    
 
   
   
  
 
 
 
 
 
 
 
 
    
    
    
    
 
   
   
   
  
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

6. INTANGIBLE ASSETS

Intangible assets as of December 31, 2022 and 2023 are summarized as follows:

Intangible assets

TJ103
IPR&D TJ101

Total intangible assets

Intangible assets

TJ103
IPR&D TJ101

Total intangible assets

As of December 31, 2022

Accumulated

     Gross carrying amount      amortization      Net carrying amount

RMB

RMB

RMB

11,670  
110,330  
122,000  

(3,112) 
—  
(3,112) 

8,558
110,330
118,888

As of December 31, 2023

Accumulated

     Gross carrying amount      amortization     

RMB

RMB

Net carrying amount
RMB      US$ (Note 2.5)

11,670  
110,330  
122,000  

(3,890) 
—  
(3,890) 

7,780  
110,330  
118,110  

1,096
15,539
16,635

The two IPR&D assets (TJ103 and TJ101) were acquired from the business combination of I-Mab Tianjin and its subsidiaries including
Chengdu Tasgen Bio-Tech Co., Ltd. and Shanghai Tianyunjian Bio-Tech Co., Ltd. (together the “Tasgen Group”) in 2017. The licensor
of  two  IPR&D  assets  was  Genexine,  Inc.  The  gross  carrying  amounts  represent  the  fair  value  assigned  to  the  respective  research  and
development assets. At the date of acquisition, these assets had not reached technological feasibility.

IPR&D  related  to  TJ103  was  subsequently  determined  to  have  a  finite  useful  life  as  a  result  of  an  out-licensing  arrangement.
Consequently, the Group uses the straight-line method to amortize the asset. The amortization for the years ended December 31, 2021,
2022 and 2023 was RMB778, RMB778 and RMB778, respectively. The estimated amortization expense for each of the five succeeding
fiscal years is RMB778.

As of December 31, 2022 and 2023, there was no impairment of the value of the Group’s intangible assets.

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7. GOODWILL

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

On July 15, 2017, the Group acquired 66.67% of the equity interests in the Tasgen Group by issuing convertible preferred shares, and
controlled  the  board  of  directors  and  business  of  I-Mab  Tianjin  since  then.  Tasgen  Group  is  principally  engaged  in  the  research  and
development  of  innovative  medicines  and  the  Group  acquired  Tasgen  Group  for  its  research  team,  technical  experience,  and  IPR&D
pipeline  assets  (see  Note  6).  As  of  December  31,  2022,  the  goodwill  of  RMB162,574  represented  the  goodwill  generated  from  the
aforementioned  acquisition  of  Tasgen  Group  and  the  business  of  Tasgen  Group  was  fully  integrated  into  the  Company  after  the
acquisition.

As of December 31, 2022 and 2023, the Group performed the quantitative impairment test by comparing the Group’s single reporting
unit’s  carrying  amount,  including  goodwill,  to  its  fair  value.  The  Group’s  single  reporting  unit  fair  value  was  determined  using
discounted cash flows based on ten-year financial projections with future revenues assumption for direct product sales of each pipeline
plus  a  terminal  value  related  to  cash  flows  beyond  the  projection  period  extrapolated  at  an  estimated  terminal  growth  rate.  A  pre-tax
discount rate was applied, which reflected an assessment of time value and specific risks relating to the industries that the Group operates
in. The probabilities of the success of the clinical trials based on the status of these trials and reference to the industry benchmark were
also incorporated into the assumption of future revenues. Management leveraged their experiences in the industries and provided forecast
based on past performance and their anticipation of future business and market developments.

As  of  December  31,  2022,  management  had  not  identified  reasonably  possible  change  in  key  assumptions  that  could  cause  carrying
amounts of the Group’s single reporting unit to exceed the fair value as material headroom resulted from the impairment reviews over
their respective carrying amounts. No impairment was recognized for the year ended December 31, 2022.

As of December 31, 2023, as result of the impairment assessment, management identified that the carrying amount of the Group’s single
reporting unit had exceeded its fair value. Therefore, the Group recognized a full impairment of RMB162,574 (US$22,898) against the
goodwill balance. The goodwill impairment resulted from the Group’s annual impairment analysis and reflects the continued disconnet
between I-Mab’s anticipated future performance and present uncertainty reflected in its market valuation.

8. INVESTMENTS ACCOUNTED FOR USING THE EQUITY METHOD AND PUT RIGHT LIABILITIES

(a) Investments accounted for using the equity method

Investment in I-Mab Hangzhou

I-Mab  Hangzhou,  incorporated  on  June  16,  2019,  was  a  wholly  owned  subsidiary  of  I-Mab  Hong  Kong  with  registered  capital  of
US$30 million, which was paid up by I-Mab Hong Kong on September 14, 2020.

On September 15, 2020 (the “Series A Closing Date”), I-Mab Hong Kong entered into an equity transfer and investment agreement (the
“Series A SPA”) with (i) a limited partnership jointly established by the management of I-Mab Hangzhou to hold restricted equity of I-
Mab  Hangzhou  issued  to  the  management  (“Management  Holdco”),  (ii)  a  limited  partnership  established  to  hold  the  shares  of  I-Mab
Hangzhou  for  future  equity  incentive  plan  (“ESOP  Holdco”)  and  (iii)  a  group  of  domestic  investors  in  China  (“Series  A  Domestic
Investors”).

In accordance with the terms of the Series A SPA,

(i)

I-Mab  Hong  Kong  agreed  to  assign  all  rights  and  obligations/ownership  of  certain  drug  candidates  in  different  stages  of
development (“Target Pipelines”) to I-Mab Hangzhou as of the Series A Closing Date as well as to transfer employment of a
team of designated management/workforce to I-Mab Hangzhou. The Target Pipelines were evaluated by an independent valuer,
with a total value of US$105 million as of the Series A Closing Date;

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

8. INVESTMENTS ACCOUNTED FOR USING THE EQUITY METHOD AND PUT RIGHT LIABILITIES (CONTINUED)

(a) Investments accounted for using the equity method (continued)

Investment in I-Mab Hangzhou (continued)

(ii)

(iii)

(iv)

Management Holdco would acquire 10% of the equity of I-Mab Hangzhou from I-Mab Hong Kong with no consideration. The
10%  equity  is  represented  by  I-Mab  Hangzhou’s  registered  capital  of  US$3  million,  and  that  after  acquiring  such  equity,
Management Holdco is committed to pay US$3 million in cash to I-Mab Hangzhou to fulfil its capital contribution obligations
in a period of four years starting from the Series A Closing Date;

ESOP  Holdco  would  acquire  5%  of  the  equity  of  I-Mab  Hangzhou  from  I-Mab  Hong  Kong  with  no  consideration.  The  5  %
equity is represented by I-Mab Hangzhou’s registered capital of US$1.5 million. All of such equity would be used for I-Mab
Hangzhou’s future equity incentive plan.

Series A Domestic Investors would acquire a total of 40% of the equity of I-Mab Hangzhou from I-Mab Hong Kong with no
consideration.  The  40%  equity  is  represented  by  I-Mab  Hangzhou’s  registered  capital  of  US$12  million,  and  after  acquiring
such  equity  of  I-Mab  Hangzhou,  Series  A  Domestic  Investors  would  pay  US$120  million  collectively  in  cash  to  I-Mab
Hangzhou to fulfil its capital contribution obligations.

Upon closing of the Series A SPA, the registered capital of I-Mab Hangzhou remained to be US$30 million. As of December 31, 2020,
among  the  total  25,500,000  outstanding  shares  of  I-Mab  Hangzhou,  13,500,000  shares  were  held  by  I-Mab  Hong  Kong  while  the
remaining 12,000,000 shares was held by Series A Domestic Investors. Shares subscribed by Management Holdco and ESOP Holdco, in
the total number of 4,500,000, have not yet been purchased by or issued to Management Holdco and ESOP Holdco as of December 31,
2020.  Once  all  these  4,500,000  subscribed  shares  of  I-Mab  Hangzhou  are  purchased  by  or  issued  to  Management  Holdco  and  ESOP
Holdco, the equity interest in I-Mab Hangzhou held by I-Mab Hong Kong, Series A Domestic Investors, Management Holdco and ESOP
Holdco would be 45%, 40%, 10% and 5% respectively. For the years ended December 31, 2021,2022 and 2023, 750,000, 750,000 and
750,000 shares were issued to Management Holdco, respectively.

On the same day, I-Mab Hong Kong also entered into a shareholders agreement with the aforementioned investors (the “Series A SHA”).
According to the SHA and I-Mab Hangzhou’s articles of association, the board of directors of I-Mab Hangzhou shall be composed of
seven directors. The directors shall be elected in the following ways: I-Mab Hong Kong is entitled to appoint three directors, including
the chairman of the board of directors, as well as nominate one independent director; the Management Holdco is entitled to appoint one
director;  two  non-related  entities  of  the  Series  A  Domestic  Investors  are  entitled  to  appoint  one  director  respectively  (“Investors
Directors”). Each director of the board of directors shall have one vote. I-Mab Hong Kong, Management Holdco and ESOP Holdco agree
to  act  in  concert,  as  long  as  each  of  Management  Holdco  and  ESOP  Holdco  respectively  holds  equity  in  I-Mab  Hangzhou,  when
exercising the rights as a shareholder.

As a result of the above transactions, I-Mab Hangzhou became an affiliate of the Group on the Series A Closing Date in accordance with
ASC 810 since I-Mab Hangzhou meets the definition of a business under ASC 805. Pipeline candidate related matters are considered to
be  the  activities  that  most  significantly  impact  the  economic  performance  of  I-Mab  Hangzhou  at  the  current  stage,  and  these  matters
cannot be acted without the consent from Series A Investors Directors. In accordance with ASC 810-10, I-Mab Hangzhou is a variable
interest entity, and no shareholder shall consolidate I-Mab Hangzhou under VIE model as neither party have the power to direct all the
activities  that  most  significantly  impact  the  economic  performance  of  I-Mab  Hangzhou.  Therefore,  the  Group  deconsolidated  I-Mab
Hangzhou  and  retained  significant  influence  in  I-Mab  Hangzhou.  The  investment  was  accounted  for  using  the  equity  method.  The
retained investment in the common stock of I-Mab Hangzhou was initially measured at fair value in accordance with ASC 810-10-40.

F-32

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

8. INVESTMENTS ACCOUNTED FOR USING THE EQUITY METHOD AND PUT RIGHT LIABILITIES (CONTINUED)

(a) Investments accounted for using the equity method (continued)

Investment in I-Mab Hangzhou (continued)

Subsequently, pursuant to the I-Mab Hangzhou’s articles of association, the Group applies the HLBV method to allocate earnings or losses of I-
Mab Hangzhou because the liquidation rights and priorities sufficiently differ from what is reflected by the underlying percentage ownership
interests. The Group recognized RMB309,208, RMB360,436 and RMB25,544 in equity in loss of an affiliate in the consolidated statements of
comprehensive loss for the years ended December 31, 2021, 2022 and 2023, and in investment accounted for using the equity method in the
consolidated balance sheets as of December 31, 2021, 2022 and 2023, respectively. During the year of 2023, the Group discontinued to apply the
equity method since the carrying amount of the investment had been reduced to zero.

The  purchase  price  of  US$3  million  committed  by  Management  Holdco  under  Series  A  SPA,  representing  10%  of  the  equity  of  I-Mab
Hangzhou, is significantly lower than the fair value of the corresponding subscribed shares as of the Closing Date. The excess is considered as
share-based  compensation  to  the  I-Mab  Hangzhou’s  management  for  the  services  to  be  used  or  consumed  in  the  I-Mab  Hangzhou’s  own
operations. The share-based compensation is considered granted upon the Closing Date and cliff vests after five years of service since the Series
A Closing Date. Consequently, the Group recognizes its proportionate share of the compensation expense recorded by I-Mab Hangzhou. For the
years ended December 31, 2021, 2022 and 2023, the Group recognized RMB28,236, RMB29,375 and RMB30,969 in equity in loss of affiliates
in the consolidated financial statements of comprehensive loss, respectively.

Along  with  the  equity  transfer  transaction,  the  team  of  designated  management/workforce  transferred  from  the  Group  to  I-Mab  Hangzhou
consists  of  several  grantees  under  the  Group’s  2020  Share  Incentive  Plan  (“2020  Plan”,  see  Note  13(d)).  And  there  were  some  employees
transferred  from  the  Group  to  I-Mab  Hangzhou  in  2021  and  2022.These  individuals  continued  to  qualify  the  definition  of  the  eligible
participants  under  the  2020  Plan  and  2021  Share  Incentive  Plan  (“2021  Plan”,  see  Note  13(e))  after  their  resignation  date  from  the  Group.
Meanwhile, there has been no change to any of the award terms. The equity transfer transaction did not trigger the modification accounting to
the share-based compensation. Additionally, given that I-Mab Hangzhou became an affiliate to the Group upon deconsolidation, and that the
other shareholders of I-Mab Hangzhou are not providing proportionate value to sponsor the 2020 Plan and 2021 Plan nor is the Group receiving
any consideration for the awards granted to employees of I-Mab Hangzhou, the Group is required, under Topic 323, to expense the full costs of
share-based compensation as incurred at the same period as the costs are recognized by I-Mab Hangzhou. For the years ended December 31,
2021,  2022  and  2023,  such  expenses  of  RMB13,267,  RMB13,852  and  RMB4,815  were  recorded  in  the  equity  in  loss  of  affiliates  in  the
consolidated statements of comprehensive loss, respectively.

In 2021, 2022 and 2023, I-Mab Hangzhou granted stock options to its employees. Pursuant to the I-Mab Hangzhou’s articles of association, the
Group  applies  the  HLBV  method  to  allocate  earnings  or  losses  of  I-Mab  Hangzhou  because  the  liquidation  rights  and  priorities  sufficiently
differ from what is reflected by the underlying percentage ownership interests. Accordingly, the Group recorded RMB17,031, RMB33,579 and
RMB19,137 in the equity in loss of affiliates in the consolidated financial statements of comprehensive loss for the years ended December 31,
2021, 2022 and 2023, and in additional paid-in capital in the consolidated balance sheets as of December 31, 2021, 2022 and 2023, respectively.

In July 2022, I-Mab Hangzhou entered into an equity transfer and investment agreement (the “Series B SPA”) and a shareholders agreement (the
“Series B SHA”) with a group of domestic investors (“Series B Domestic Investors”) in China to raise approximately US$46 million in RMB
equivalent.  Once  all  the  shares  of  I-Mab  Hangzhou  are  purchased  by  or  issued  to  its  investors,  including  Management  Holdco  and  ESOP
Holdco,  the  Group  would  hold  37.13%  equity  interest  in  I-Mab  Hangzhou.  Pursuant  to  the  Series  B  SHA,  Management  Holdco  and  ESOP
Holdco no longer had irrevocably consented to act in concert with I-Mab Hong Kong. I-Mab Hangzhou remains the affiliate of the Group. The
Series B rounding financing in I-Mab Hangzhou was consummated in 2023.

As  of  December  31,  2022  and  2023,  the  carrying  value  of  the  Group’s  long-term  investment  in  I-Mab  Hangzhou  RMB25,214  and  nil,
respectively.

On February 6, 2024, the Company entered into definitive agreements with I-Mab Hangzhou and its investors which provide that the Company’s
wholly owned subsidiary, I-Mab Hong Kong, will transfer the equity interests it holds in I-Mab Hangzhou to certain participating shareholders
of I-Mab Hangzhou in exchange for extinguishment of the existing repurchase obligations owed by I-Mab Hong Kong to those shareholders.
Details, please refer to Note 22.

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

8. INVESTMENTS ACCOUNTED FOR USING THE EQUITY METHOD AND PUT RIGHT LIABILITIES (CONTINUED)

(a) Investments accounted for using the equity method (continued)

Other long-term investment measured under equity method

In July 2021, the Group, as a limited partner, entered into a partnership agreement with other investors and subscribed RMB20,000 for a
4%  equity  interest  in  a  partnership  located  in  Hangzhou.  In  August  2021,  the  Group  paid  the  initial  investment  of  RMB6,000  to  the
partnership. Pursuant to the partnership agreement, the Group, as a limited partner, shall not participate in any activities in relation to
management  of  the  investment  business.  In  addition,  members  of  the  investment  committee  shall  only  be  appointed  by  the  general
partner. For the years ended December 31, 2021 and 2022, the Group recorded RMB141, RMB223 in the equity in loss of affiliates in the
consolidated financial statements of comprehensive loss. In 2023, the Group paid the second investment of RMB6,000 to the partnership.
For the year ended December 31, 2023, the Group recorded RMB446 in the equity in income of affiliates in the consolidated financial
statements of comprehensive loss. As of December 31, 2022 and 2023, the carrying value of the Group’s long-term investment in this
affiliate was RMB5,636 and RMB12,082, respectively.

The Group presented the summarized financial information of the Group’s long-term investment measured under equity method below in
accordance with Rule 4-08 of Regulation S-X (RMB in thousands).

For the year ended
December 31, 2021
I-Mab

For the year ended
December 31, 2022
I-Mab

For the year ended
December 31, 2023
I-Mab

Other equity
     Hangzhou      investments      Hangzhou      investments      Hangzhou      investments

Other equity

Other equity

Operating data:

Revenue
Income (Loss) from operations
Net income (loss)

Balance sheet data:
Current assets
Non-current assets
Current liabilities
Non-current liabilities

(b) Put right liabilities

5,660  
(295,186) 
(290,586) 

— 103,826  
(356,734) 
(346,322)

(3,513)
(3,513)

— 122,604  
(313,600) 
(313,600)

(5,565)
(5,565)

—
11,123
11,123

As of December 31,

I-Mab

     Hangzhou

2022
     Other equity     
investments

I-Mab
Hangzhou

2023
     Other equity
investments

499,665  
1,432,328  
281,587  
232,083  

81,683
135,347
107
—

333,423  
1,508,244  
313,204  
349,821  

67,221
313,282
58
—

Pursuant to the Series A SHA and Series B SHA, if I-Mab Hangzhou fails to consummate a public offering of I-Mab Hangzhou’s shares
on  the  China  Stock  Exchange’s  Science  and  Technology  Innovation  Board,  Main  Board,  Small  and  Medium-Sized  Enterprise  Board,
Growth Enterprise Board, or Hong Kong Stock Exchange, U.S. Stock Exchange, or other stock exchanges approved by the shareholders
of I-Mab Hangzhou in accordance with provisions of the Series A SHA and Series B SHA within 4 years after September 15, 2020 (the
“Repurchase Scenario”), the Series A Domestic Investors and Series B Domestic Investors (collectively, the “Domestic Investors”) will
have the right to elect to request I-Mab Hong Kong to repurchase all or any part of the equity of I-Mab Hangzhou held by such Domestic
Investors within three years of the occurrence of the Repurchase Scenario. I-Mab Hong Kong is obligated to repurchase the equity held
by the Domestic Investors in cash or in I-Mab’s stock (subject to the approval procedures of I-Mab) within 1 year from the date on which
any of the Domestic Investors delivers request of repurchase in writing. The repurchase price is determined based on the investment cost
of the Domestic Investors with pre-agreed interest. The put right liabilities were recorded as non-current liabilities as of December 31,
2022  and  2023  based  on  management’s  best  estimate  of  the  timing  in  settlement  of  potential  repurchase  request  from  the  Domestic
Investors as of the balance sheet date.

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

8. INVESTMENTS ACCOUNTED FOR USING THE EQUITY METHOD AND PUT RIGHT LIABILITIES (CONTINUED)

(b) Put right liabilities (continued)

The put right written by I-Mab Hong Kong to the Domestic Investors is a freestanding equity-linked instrument, which is classified as a
put right liability and is initially measured at fair value. Subsequent changes in fair value are recorded in other income (expenses) in the
consolidated statements of comprehensive loss.

On February 6, 2024, the Company entered into definitive agreements with I-Mab Hangzhou and its investors which provide that the
Company’s  wholly  owned  subsidiary,  I-Mab  Hong  Kong,  will  transfer  the  equity  interests  it  holds  in  I-Mab  Hangzhou  to  certain
participating  shareholders  of  I-Mab  Hangzhou  in  exchange  for  extinguishment  of  the  existing  repurchase  obligations  owed  by  I-Mab
Hong Kong to those shareholders. Details, please refer to Note 22.

The Group determined the fair value of the put right with the assistance of an independent third-party valuation firm. The Group used the
option pricing model (finnerty model) to estimate the fair value of the put right using the following assumptions:

Put right liabilities - Series A
Expected terms (Year)
Estimated volatility
Spot price
Probability of triggering event for redemption option

Put right liabilities - Series B
Expected terms (Year)
Estimated volatility
Spot price
Probability of triggering event for redemption option

As of
December 31,
2022

As of
December 31,
2023

1.7
33.9 %  

0.7
36.5 %  

US$

148,276

US$ 

156,707

70 %  

100 %  

As of
December 31,
2022

As of
December 31,
2023

 US$

1.7  
31.1 %  
36,516   US$
70 %  

0.7
33.5 %

44,570

100 %

The  model  requires  the  input  of  key  assumptions  including  the  expected  terms,  estimated  volatility,  spot  price  and  probability  of
triggering  event  for  redemption  option.  The  significant  unobservable  inputs  used  in  the  option  pricing  model  included  spot  price,
estimated  volatility  and  probability  of  triggering  event  for  redemption  option.  Expected  terms  is  estimated  based  on  the  timing  of  a
hypothetical redemption event which is assumed to be the earlier of expected redemption date or expected public offering date. Expected
volatility is estimated based on daily stock prices of the comparable companies for a period with length commensurate to the expected
terms of redemption event. The spot price was determined using the market approach with assistance from an independent third-party
valuation firm. The significant unobservable inputs used in the market approach include estimated volatility and probability of triggering
event for redemption option. The Group’s management is ultimately responsible for the determination of the spot price and probability of
triggering event for redemption option.

Significant decreases in interval between valuation date and maturity date, estimated volatility, spot price and probability of triggering
event for redemption option would result in a significantly lower fair value measurement.

9. SHORT-TERM BORROWINGS

In December 2022, I-Mab Shanghai borrowed a loan of RMB18,956 from Shanghai Pudong Development Bank Co., Ltd. for a term of
six  months  and  at  the  interest  rate  of  3.40%  per  annum.  To  facilitate  this  borrowing,  I-Mab  Hong  Kong  placed  cash  deposits  of
USD5,000 (equivalent to approximately RMB34,823) with the bank. The use of such cash deposits and the interest earned thereon are
restricted by the bank during the period of the borrowing. This borrowing was repaid in full and the restrictions on the cash deposits were
thereof released in 2023.

F-35

    
    
    
    
 
 
 
 
 
 
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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

9. SHORT-TERM BORROWINGS (CONTINUED)

In June 2023, I - Mab Shanghai borrowed credit loans with a total amount of RMB29,970 from China Merchants Bank for a term of six
months and at the interest rate of 3.40% per annum. These borrowings were extended in the fourth quarter of 2023 and were fully repaid
in March 2024 subsequently.

10. ACCRUALS AND OTHER PAYABLES

Current:
Staff salaries and welfare payables
Accrued external research and development activities related expenses
Payable due to an affiliate (Note 19)
Accrued Termination fee and other expenses in relation to the disputes with Tracon

(Note 14)

Non-refundable incentive payment from depositary bank (1)
Payables for purchase of property, equipment and software
Accrued traveling expenses, office expenses and others

Non-current:
Non-refundable incentive payment from depositary bank (1)
Non-refundable  payment  received  in  relation  to  the  exclusive  promotion  right

granted to a third party (2)

Borrowings for supply chain financing (3)

Total

As of December 31,      

2022
RMB

As of December 31, 
2023
     US$ (Note 2.5)

RMB

43,483  
264,972  
64,782

161,106  
6,428  
7,124
158,677  
706,572  

48,604  
181,232  
35,058

—  
9,014  
1,226
82,620  
357,754  

6,846
25,526
4,938

—
1,270
173
11,636
50,389

6,963  

751  

105

10,000  

—

16,963  
723,535  

10,000  
58,913
69,664  
427,418  

1,408
8,298
9,811
60,200

(1) The  Group  received  a  non-refundable  incentive  payment  of  US$1,857  (equivalent  to  approximately  RMB12,982),  US$1,195
(equivalent  to  approximately  RMB8,075)  and  US$671  (equivalent  to  approximately  RMB4,734)  from  depositary  bank  in
April  2020,  December  2022  and  March  2023,  respectively.  The  amount  was  recorded  ratably  as  other  gains  over  a  five-year
arrangement period. For the years ended December 31, 2021, 2022 and 2023, the Group has recorded RMB2,395, RMB2,821 and
RMB8,569 as other income in the consolidated statements of comprehensive loss, respectively.

(2)

(3)

In November 2021, the Group entered into a collaboration agreement with a third party located in China to grant the third party an
exclusive right to conduct promotion activities for the TJ202 drug products in designated hospitals after the commercialization of
TJ202 in future years. In November 2021, the Group received a non-refundable payment of RMB10,000 from the third party and
recorded  it  as  the  non-current  liabilities  in  the  consolidated  balance  sheet.  This  amount  will  be  recorded  as  the  deduction  of  the
selling expenses after the commercialization of TJ202 products.

In April 2023, the Group entered into an agreement with China Merchants Bank, under which the Group was granted a total credit
facility of RMB60,000 for a term of two years to support its payments to suppliers. As of December 31, 2023, the Group placed cash
deposits of RMB58,913 with the bank, and the bank paid RMB58,913 to the supplier. The use of such cash deposits is restricted
until the Group repay RMB58,913 to the bank in 2025 and is classified as long-term restricted cash. No interest expenses will be
charged to the Group.

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11. INCOME TAXES

Cayman Islands

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

I-Mab is incorporated in the Cayman Islands. Under the current laws of the Cayman Islands, I-Mab is not subject to tax on income or
capital gain. Additionally, the Cayman Islands does not impose a withholding tax on payments of dividends to shareholders.

Hong Kong

I-Mab  did  business  registration  in  Hong  Kong  and  has  a  Hong  Kong  tax  file  number.I-Mab  Biopharma  Hong  Kong  Limited  is
incorporated in Hong Kong. Companies registered in Hong Kong are subject to Hong Kong profits tax on the taxable income as reported
in their respective statutory financial statements adjusted in accordance with the relevant Hong Kong tax laws. The applicable tax rate in
Hong Kong is 16.5%. For the years ended December 31, 2021, 2022 and 2023, the income tax expenses recorded in the consolidated
statements of comprehensive loss for I-Mab were nil, RMB697 and nil, respectively. For the years ended December 31, 2021, 2022 and
2023, I-Mab Biopharma Hong Kong Limited did not make any provisions for Hong Kong profit tax as there were no assessable profits
derived from or earnings in Hong Kong for any of the periods presented. Under the Hong Kong tax law, I-Mab and I-Mab Biopharma
Hong Kong Limited is exempted from income tax on its foreign-derived income and there are no withholding taxes in Hong Kong on
remittance of dividends.

United States

I-Mab Biopharma US Ltd. is incorporated in U.S. and is subject to U.S. federal corporate income tax at a rate of 21%. I-Mab Biopharma
US  Ltd.  is  also  subject  to  state  income  tax  in  Maryland  of  8.25%.  I-Mab  Biopharma  US  Ltd.  has  no  taxable  income  for  all  periods
presented, therefore, no provision for income taxes is required.

China

On March 16, 2007, the National People’s Congress of PRC enacted a new Enterprise Income Tax Law (“new EIT law”), under which
Foreign Investment Enterprises (“FIEs”) and domestic companies would be subject to corporate income tax at a uniform rate of 25%.
The new EIT law became effective on January 1, 2008. Under the new EIT law, preferential tax treatments will continue to be granted to
entities  which  conduct  businesses  in  certain  encouraged  sectors  and  to  entities  otherwise  classified  as  “High  and  New  Technology
Enterprises”.

I-Mab Shanghai has been qualified as “High and New Technology Enterprise” and enjoys a preferential income tax rate of 15% from
2021 to 2023.

The Company’s other PRC subsidiaries are subject to the statutory income tax rate of 25%.

No  provision  for  corporate  income  taxes  for  corresponding  tax  residents  has  been  made  because  the  Group  are  in  cumulative  loss
positions for all the periods presented. During the year ended December 31, 2020, the Group accrued withholding taxes with the amount
of RMB12,231 in relation to research and development service and other supporting service charges made by its non-PRC tax resident
subsidiaries  to  its  PRC  tax  resident  subsidiaries.  As  the  actual  withholding  taxes  paid  to  local  tax  bureau  was  RMB9,077,  the  Group
reversed the tax expenses of RMB3,154 in the year ended December 31, 2021.

F-37

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

11. INCOME TAXES (CONTINUED)

China (continued)

Reconciliations  of  the  differences  between  the  PRC  statutory  income  tax  rate  and  the  Group’s  effective  income  tax  rate  for  the  years
ended December 31, 2021, 2022 and 2023 are as follows:

Loss before income tax
Income tax computed at respective applicable tax rate
Non-deductible expenses
Research and development expenses plus deduction
True up of withholding tax expenses
Changes in valuation allowance

Effect of tax holidays entitled by the PRC subsidiaries on basic loss per share

The principal components of the deferred tax assets and liabilities are as follows:

Year Ended December 31, 

2021
RMB

2022
RMB

(2,334,695) 
(410,899) 
68,400  
(50,530) 
(3,154) 
393,029  
(3,154) 
(0.84) 

(2,506,620) 
(442,343) 
38,570  
(74,415) 
—  
478,885  
697  
(0.65) 

2023

RMB

US$

(1,465,694) 
(263,660) 
124,733  
(80,069) 
—  
218,996  
—  
(0.42) 

     (Note 2.5)
(206,439)
(37,136)
17,569
(11,278)
—
30,845
—
(0.06)

Deferred tax assets:
Net operating loss carryforward
Depreciation  and  amortization  of  property,  equipment,  software,  intangible  asset  and

capitalized R&D expenses

Share-based compensation expenses
Accrual expense
Less: valuation allowance
Total deferred tax assets

Deferred tax liabilities:
Acquired intangible assets
Total deferred tax liabilities
Deferred tax assets, net

2022
RMB

As of December 31, 
2023

RMB

US$
(Note 2.5)

792,602  

912,137  

128,472

39,189  
127,950  
30,210  
(972,118) 
17,833  

91,214  
197,274  
8,205  
(1,191,114) 
17,716  

12,847
27,785
1,156
(167,765)
2,495

17,833  
17,833  
—  

17,716  
17,716  
—  

2,495
2,495
—

F-38

    
    
    
    
 
 
 
 
 
 
 
 
    
    
    
    
   
   
  
 
 
 
 
Table of Contents

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

11. INCOME TAXES (CONTINUED)

China (continued)

Movement of the valuation allowance is as follows:

Balance as of January 1
Additions
Utilization and reversal of valuation allowances
Balance as of December 31

Year Ended December 31

2021
RMB

2022
RMB

2023

RMB

(100,204) 
(393,029) 
—  
(493,233) 

(493,233) 
(478,885) 
—  
(972,118) 

(972,118) 
(283,273) 
64,277  
(1,191,114) 

US$
(Note 2.5)
(136,920)
(39,898)
9,053
(167,765)

As  of  December  31,  2023,  the  Group  had  a  majority  of  net  operating  losses  of  approximately  RMB4,854,145  which  arose  from  the
subsidiaries established in the PRC. The tax losses carried forward various in the PRC will expire during the period beginning from 2024
to 2033 based on entity’s preferential tax status.

A valuation allowance is provided to reduce the amount of deferred tax assets if it is considered as more likely than not that some portion
or all of the deferred tax assets will not be realized in the foreseeable future. In making such determination, the Group evaluates a variety
of  positive  and  negative  factors  including  the  Group’s  operating  history,  accumulated  deficit,  the  existence  of  taxable  temporary
differences and reversal periods.

The Group has incurred net accumulated operating losses for income tax purposes since its inception. The Group believes that it is more
likely than not that these net accumulated operating losses together with other deferred tax assets will not be utilized in the foreseeable
future. Therefore, the Group has provided full valuation allowances for the deferred tax assets as of December 31, 2022 and 2023.

The  Group  evaluates  each  uncertain  tax  position  (including  the  potential  application  of  interest  and  penalties)  based  on  the  technical
merits, and measure the unrecognized benefits associated with the tax positions. As of December 31, 2022 and 2023, the Group did not
have any significant unrecognized uncertain tax positions.

12. ORDINARY SHARES

The Company’s authorized share capital is US$80,000 comprising 800,000,000 ordinary shares with a par value of US$0.0001 each. As
of December 31, 2020, the Company issued 164,888,519 ordinary shares.

During  the  year  ended  December  31,  2021,  warrants  provided  to  external  investor  in  2020  were  exercised  to  subscribe  5,341,267
ordinary shares of the Company.

On August 23, 2022, the Company announced, that it plans to implement share repurchases pursuant to the share repurchase program
previously authorized by its board of directors. Under the share purchase plans, the Company and the senior management may purchase
up to US$40 million of ADSs in aggregate. In August 2023, the Board of Directors of the Company authorized a new share repurchase
program under which the Company may repurchase up to US$40 million of ADSs, each ten ADSs representing 23 ordinary shares of the
Company, or ordinary shares in aggregate over a 12-month period. For the year ended December 31, 2022 and 2023, the Company had
repurchased  1,652,541  ordinary  shares  in  an  aggregate  amount  of  approximately  US$3  million  (equivalent  to  RMB21,249),  and
10,656,794 ordinary shares in an aggregate amount of approximately US$8.6 million (equivalent to RMB61,260) under the authorized
share purchase program, respectively. These repurchased shares are considered not outstanding and therefore were accounted for under
the cost method and includes such treasury stock as a component of the shareholder’s equity.

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

12. ORDINARY SHARES (CONTINUED)

For  the  years  ended  December  31,  2021,  2022  and  2023,  nil  ,  nil  and  3,849,268  treasury  stock  was  used  for  the  issuance  of  ordinary
shares for exercise of share options and vesting of restricted share units, respectively. As of December 31, 2022 and 2023, 1,652,541 and
8,460,067 shares were recorded as treasury stock, respectively.

During  the  years  ended  December  31,  2021,  2022  and  2023,  8,227,843,  6,845,888  and  280,568  stock  options  were  exercised,  and
5,369,140, 1,859,819 and 1,260,701 restricted share units were issued as ordinary shares, respectively.

13. SHARE-BASED COMPENSATION

(a) 2017 Employee Stock Option Plan (“2017 Plan”)

In October 2017, the Company adopted the 2017 Plan. Under the 2017 Plan, a maximum aggregate number of 13,376,865 shares that
may  be  issued  pursuant  to  all  awards  granted  was  approved.  Stock  options  granted  to  an  employee  under  the  2017  Plan  will  be
exercisable  upon  the  Company  completes  a  listing  and  the  employee  renders  service  to  the  Company  in  accordance  with  a  stipulated
service  schedule  starting  from  the  employee’s  date  of  employment.  Employees  are  generally  subject  to  a  three-year  service  schedule,
under which an employee earns an entitlement to vest in 50% of the option grants on the second anniversary of the grant date, a vesting
of the remaining 50% on the third anniversary of the applicable grant date. The stock option under 2017 Plan, to the extent then vested,
shall become exercisable only upon the earlier of (i) a listing, and (ii) occurrence of a change in control.

On December 25, 2019, the Second Amended and Restated 2017 Plan was approved by the shareholders and board of directors of the
Company,  pursuant  to  which,  in  connection  with  the  Company’s  IPO,  the  maximum  aggregate  number  of  shares  that  may  be  granted
pursuant to all awards under 2017 Plan shall be adjusted in accordance with a formula pre-approved by the shareholders.

Prior to the Company completes a listing, all stock options granted to an employee shall be forfeited at the time the employee terminates
his employment with the Group. After the Company completes a listing, vested options not exercised by an employee shall be exercised
until later of: (i) 90 days after the date when the options become exercisable, or (ii) 30 days after the date of cessation of employment or
directorship, or such longer period as the Board of Directors may otherwise determine.

The  Group  did  not  grant  any  stock  options  to  employees  for  the  years  ended  December  31,  2021,  2022  and  2023.  1,782,617  and
1,665,252 stock options were exercisable as of December 31, 2022 and 2023, respectively.

F-40

Table of Contents

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(a) 2017 Employee Stock Option Plan (“2017 Plan”) (continued)

The following table sets forth the stock options activities of 2017 Plan for the periods presented:

Outstanding as of December 31 , 2020

Exercised
Forfeited

Outstanding as of December 31 , 2021

Exercised

Outstanding as of December 31 , 2022

Exercised
Expired

Outstanding as of December 31 , 2023
Exercisable as of December 31, 2023

     Weighted      Weighted
average
remaining
contractual
term

average
exercise
price
US$

0.97  
0.96  
1.00
1.00  
1.00  
1.00  
1.00  
1.00  
1.00  
1.00  

6.75  
—  
—
5.79  
—  
4.75  
—  
—  
3.66  
3.66  

Number of 
shares
7,702,066  
(5,122,549) 
(10,500)
2,569,017  
(786,400) 
1,782,617  
(73,444) 
(43,921) 
1,665,252  
1,665,252  

Aggregate
intrinsic
value
US$
150,415
—
—
50,361
—
1,457
—
—
—
—

All the stock options were vested as of December 31, 2021.

Share-based compensation expenses related to the stock options of 2017 Plan are included in:

Research and development expenses
Administrative expenses
Equity in loss of affiliates

(b) 2018 Employee Stock Option Plan (“2018 Plan”)

Year Ended December 31, 

2021
RMB

2022
RMB

RMB

(225) 
2,835  
516  
3,126  

—  
—  
—  
—  

2023
     US$ (Note 2.5)
—
—
—
—

—  
—  
—  
—  

On February 22, 2019, the Group adopted the 2018 Plan, which was subsequently amended on July 22, 2019.Under the amended and
restated 2018 Plan, the maximum aggregate number of ordinary shares which may be issued pursuant to all awards is 14,005,745, and if
the Group successfully lists on an internationally recognized securities exchange for a Qualified Public Offering by December 31, 2019,
the maximum aggregate number of ordinary shares which may be issued shall be 15,452,620.

On December 25, 2019, the Second Amended and Restated 2018 Plan were approved by the shareholders and board of directors of the
Company,  pursuant  to  which,  in  connection  with  the  Company’s  IPO,  the  maximum  aggregate  number  of  shares  that  may  be  granted
pursuant to all awards under 2018 Plan shall be adjusted in accordance with a formula pre-approved by the shareholders.

F-41

    
    
    
    
    
    
 
 
 
 
 
 
 
 
 
    
    
    
 
 
 
 
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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(b) 2018 Employee Stock Option Plan (“2017 Plan”) (continued)

Stock options granted to an employee under the 2018 Plan will be generally exercisable when the Company completes a listing and the
employee  renders  service  to  the  Company  in  accordance  with  a  stipulated  service  schedule  starting  from  the  employee’s  date  of
employment.  The  vesting  schedule  shall  generally  be  a  two-year  vesting  schedule  consisting  of  a  cliff  vesting  50%  on  the  first
anniversary  of  the  applicable  vesting  commencement  date,  and  a  vesting  of  the  remaining  50%  on  the  second  anniversary  of  the
applicable  vesting  commencement  date.  If  a  listing  occurs  at  anytime  prior  to  any  option  granted  under  the  2018  Plan  becoming  full
vested, and to the extent such option has been granted and outstanding, any such option shall vest in full with immediate effect upon the
listing. Except as otherwise approved by the board of directors, vested portion of option shall become exercisable upon the earlier of six
months  after  a  listing  or  the  occurrence  of  a  change  in  control;  provided,  however  that  in  each  case,  no  option  of  an  employee  shall
become exercisable until the third anniversary of such employee’s employment commencement date.

The following table sets forth the stock options activities of 2018 Plan for the periods presented:

Outstanding as of December 31, 2020

Exercised

Outstanding as of December 31, 2021

Exercised

Outstanding as of December 31, 2022

Exercised
Expired

Outstanding as of December 31, 2023
Exercisable as of December 31, 2023

Weighted
average
exercise
price
US$

Weighted
average
remaining
contractual
term

1.00  
1.00
1.00  
1.00  
1.00  
1.00  
1.00
1.00  
1.00  

8.15  
—
7.15  
—  
6.15  
—  
—
5.15  
5.15  

Aggregate
intrinsic
value
US$
206,499
—
148,076
—
1,233
—
—
—
—

Number of
shares

10,589,671  
(3,036,435)
7,553,236  
(6,044,843) 
1,508,393  
(333,998) 
(998)
1,173,397  
1,173,397  

All the stock options were vested as of December 31, 2021.

Share-based compensation expenses related to the stock options of 2018 Plan are included in:

Research and development expenses
Administrative expenses
Equity in loss of affiliates

(c) 2019 Share Incentive Plan (“2019 Plan”)

Year Ended December 31, 

2021
RMB

2022
RMB

RMB

55  
4,478  
257  
4,790  

—  
—  
—  
—  

2023
     US$ (Note 2.5)
—
—
—
—

—  
—  
—  
—  

On October 29, 2019, the Group adopted 2019 Share Incentive Plan (the “2019 Plan”), which will become effective immediately prior to
the  completion  of  the  Company’s  initial  public  offering.  Under  the  2019  Plan,  the  maximum  aggregate  number  of  ordinary  shares
available for issuance shall initially be 100,000.

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Table of Contents

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(c) 2019 Share Incentive Plan (“2019 Plan”) (continued)

The options shall vest when the Group completes a listing and the employee renders service to the Group in accordance with a stipulated
service schedule starting from the employee’s date of employment. Stock options granted to 3 independent directors under the 2019 Plan
will  be  generally  exercisable  under  the  following  terms:(a)  a  cliff  vesting  of  1/3  of  the  option  on  the  first  anniversary  of  the  vesting
commencement date (January 17, 2020); (b) a cliff vesting of 1/3 of the option on the second anniversary of the vesting commencement
date (January 17, 2020); (c) a vesting of the remaining 1/3 of the option on the third anniversary of the vesting commencement date. In
the last year of the grantee’s service, the options shall vest on a prorated basis to reflect the portion of the year during which the grantee
provided services to the Group.

For the year ended December 31, 2020, the Group granted 72,000 stock options to 3 independent directors (all with an exercise price of
US$6.09). 48,000 and 72,000 options were exercisable as of December 31, 2022 and 2023, respectively.

The following table sets forth the stock options activities of 2019 Plan for periods presented:

Outstanding as of December 31, 2020

Granted

Outstanding as of December 31, 2021

Granted

Outstanding as of December 31, 2022

Granted

Outstanding as of December 31, 2023
Exercisable as of December 31, 2023

Weighted
average
exercise
price
US$

Weighted
average
remaining
contractual
term

Aggregate
intrinsic
value
US$

6.09  
—  
6.09  
—  

6.09
—
6.09  
6.09  

9.33  
—  
8.05  
—  

7.05
—
6.05  
6.05  

1,038
—
1,045
—
—
—
—
—

Number of
shares
72,000  
—  
72,000  
—  

72,000
—

72,000  
72,000  

A summary of non-vested stock options activity for the year ended December 31, 2023 is presented below:

Non-vested at December 31, 2022

Vested

Non-vested at December 31, 2023

Share-based compensation expenses related to the stock options of 2019 Plan are included in:

Number of shares

24,000  
(24,000) 
—  

     Weighted average

grant-date
fair value
US$

4.50
4.50
—

Research and development expenses
Administrative expenses
Equity in loss of affiliates

Year Ended December 31, 

2021
RMB

2022
RMB

RMB

—  
707  
—  
707  

—  
288  
—  
288  

2023
     US$ (Note 2.5)
—
2
—
2

—  
13  
—  
13  

F-43

    
    
    
    
 
 
 
 
 
 
    
 
 
 
    
    
    
    
 
 
 
 
Table of Contents

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(d) 2020 Plan

On July 15, 2020, the Group adopted 2020 Plan. Under the 2020 Plan, the maximum aggregate number of shares authorized to be issued
is 10,760,513 ordinary shares, provided that the maximum number of shares to be issued in the form of restricted share units shall not
exceed 7,686,081 ordinary shares.

Stock options granted to employees under the 2020 Plan are graded vesting in four years with 25% vesting each year.

For the years ended December 31, 2021, 2022 and 2023, the Group granted 133,913, 2,026,300 and nil stock options to its employees,
respectively. 353,949 options and 1,299,637 options were exercisable as of December 31, 2022 and 2023, respectively.

The following table sets forth the stock options activities of 2020 Plan for the periods presented:

Outstanding as of December 31, 2020

Granted
Exercised
Expired
Forfeited

Outstanding as of December 31, 2021

Granted
Exercised
Expired
Forfeited

Outstanding as of December 31, 2022

Expired
Forfeited

Outstanding as of December 31, 2023
Exercisable as of December 31, 2023

Weighted
average
exercise
price
US$

Weighted
average
remaining
contractual
term

5.91  
18.85  
5.91  
5.91  
6.23  
7.61  
9.20  
5.91  
6.74
7.65
8.81
10.78
10.33

8.47  
8.21  

9.62  
—  
—  
—  
—  
8.68  
—  
—  
—
—
8.76
—
—
7.62  
7.37  

Aggregate
intrinsic
value
US$
15,237
—
—
—
—
12,967
—
—
—
—
—
—
—
—
—

Number of
shares
1,044,368  
133,913  
(68,859) 
(154) 
(111,495) 
997,773  
2,026,300  
(14,645) 
(69,051)
(170,490)
2,769,887
(179,992)
(291,751)
2,298,144  
1,299,637  

A summary of non-vested stock option activities for the year ended December 31, 2023 is presented below:

Non-vested at December 31, 2022

Vested
Forfeited

Non-vested at December 31, 2023

F-44

     Weighted average

grant-date
fair value
US$

5.40
5.22
7.20
5.08

Number of shares

2,415,938
(1,125,680) 
(291,751) 
998,507  

    
    
    
    
 
 
 
 
 
 
 
 
 
 
    
 
 
 
Table of Contents

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(d) 2020 Plan (continued)

Stock options granted to the employees were measured at fair value on the dates of grant using the Binomial Option Pricing Model with
the following assumptions:

Expected volatility
Risk-free interest rate (per annum)
Exercise multiple
Expected dividend yield
Time to maturity (in years)

Year Ended December 31,

2021

50.78%-51.84%
1.32%-1.88%
2.20-2.80
—
10

2022

53.66 %
1.88 %

2.20-2.80
—
10

The expected volatility was estimated based on the historical volatility of comparable peer public companies with a time horizon close to
the expected term of the Group’s options. The risk-free interest rate was estimated based on the yield to maturity of U.S. treasury bonds
denominated  in  US$  for  a  term  consistent  with  the  expected  term  of  the  Group’s  options  in  effect  at  the  option  valuation  date.  The
expected exercise multiple was estimated as the average ratio of the stock price to the exercise price when employees would decide to
voluntarily  exercise  their  vested  options.  As  the  Group  did  not  have  sufficient  information  of  past  employee  exercise  history,  it  was
estimated by referencing to a widely-accepted academic research publication. Expected dividend yield is zero as the Group has never
declared or paid any cash dividends on its shares, and the Group does not anticipate any dividend payments in the foreseeable future.
Time to maturity equals to the contract life of the option.

Share-based compensation expenses related to the stock options of 2020 Plan are included in:

Year Ended December 31, 

Research and development expenses
Administrative expenses
Equity in loss of affiliates

2021
RMB
14,915  
8,702  
3,262  
26,879  

2022
RMB
17,068  
25,897  
2,846  
45,811  

RMB

3,244  
9,189  
1,299  
13,732  

2023
     US$ (Note 2.5)
457
1,294
182
1,933

Restricted share units granted to employees under the 2020 Plan will be exercisable under the following items:

(1) 1/3 of the awarded restricted share units shall vest based on the following time attribution:(i) a vesting of 25% of the time attribution
based  restricted  share  units  on  the  first  anniversary  of  the  applicable  adoption  date;(ii)  a  vesting  of  25%  of  the  time  attribution  based
restricted  share  units  on  the  second  anniversary  of  the  applicable  adoption  date;(iii)  a  vesting  of  25%  of  the  time  attribution  based
restricted share units on the third anniversary of the applicable adoption date;(iv) a vesting of 25% of the time attribution based restricted
share units on the fourth anniversary of the applicable adoption date.

(2) 1/3 of the awarded restricted share units shall vest based on the Group’s weighted average market value during the last 30 days prior
to the initial vesting date, the terms and conditions of which are set forth in the executed award agreements. In the event that dilution of
additional share issuance occurs, the market value targets herein shall be adjusted accordingly with the proportion of additional share
issuance. In the event that the average market value of Standard & Poor’s 500 index falls by more than 20% from the date of grant, it
shall be deemed as a decline of the market, and the board of the Group or a committee that board delegated its powers or authority to
shall adjust the vesting schedule as appropriate.

F-45

    
     
 
 
 
 
 
    
    
    
 
 
 
 
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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(d) 2020 Plan (Continued)

(3) 1/3 of the awarded restricted share units shall vest based on certain performance conditions:(i) a vesting of 20% of the performance
conditions based restricted share units if one of the performance conditions has been met at the initial vesting date;(ii) a vesting of 40%
of the performance conditions based restricted share units if two of the performance conditions have been met at the initial vesting date;
(iii) a vesting of 60% of the performance conditions based restricted share units if three of the performance conditions have been met at
the  initial  vesting  date;(iv)  a  vesting  of  80%  of  the  performance  conditions  based  restricted  share  units  if  four  of  the  performance
conditions have been met at the initial vesting date; (v) a vesting of all of the performance conditions based restricted share units if five
of the performance conditions or more have been met at the initial vesting date. As of December 31, 2020, it is probable that the 1/3 of
the awarded restricted share units are fully vested because it is probable that at least five of the performance conditions will be met at the
initial vesting date.

Notwithstanding  the  foregoing,  if  the  Group’s  weighted  average  market  value  during  the  last  30 days  prior  to  the  initial  vesting  date
reaches US$2 billion or above, and to the extent such restricted share units have been granted and outstanding, any such restricted share
unit (except for those are based on time attribution) shall vest in full with immediate effect, inure to the benefit of the related grantees.

For  the  years  ended  December  31,  2021,  2022  and  2023,  the  Group  granted  1,649,045,  755,734  and  nil  restricted  share  units  to
employees, respectively.

The following table sets forth the restricted share units of 2020 Plan for the periods presented:

Outstanding as of December 31, 2020

Granted
Vested
Forfeited

Outstanding as of December 31, 2021

Granted
Vested
Forfeited

Outstanding as of December 31, 2022

Vested
Forfeited

Outstanding as of December 31, 2023

F-46

     Weighted
average
exercise
price
US$

     Weighted
average
remaining
contractual
term

Aggregate
intrinsic
value
US$
83,632
—
—
—
30,531
—
—
—
2,266
—
—
428

—  
—  
—  
—  
—  
—  
—  
—
—
—
—
—  

9.70  
—  
—  
—  
8.95  
—  
—  
—
8.55
—
—
7.63  

Number of
restricted
share units
4,079,618  
1,649,045  
(4,048,000) 
(198,872) 
1,481,791  
755,734  
(720,232) 
(270,482)
1,246,811
(576,326)
(152,478)
518,007  

    
    
 
 
 
 
 
 
 
 
Table of Contents

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(d) 2020 Plan (Continued)

A summary of non-vested restricted share units activities for the year ended December 31, 2023 is presented below:

Non-vested at December 31, 2022

Vested
Forfeited

Non-vested at December 31, 2023

Number of restricted share
units

     Weighted average

grant-date
fair value
US$

1,246,811  
(576,326) 
(152,478) 
518,007  

2.98
11.76
13.35
12.33

Share-based compensation expenses related to the aforementioned restricted share units of 2020 Plan are included in:

Year Ended December 31, 

Research and development expenses
Administrative expenses
Equity in loss of affiliates

2021
RMB
118,368  
227,392  
8,512  
354,272  

2022
RMB
18,055  
37,399  
4,214  
59,668  

RMB

4,657  
10,232  
1,575  
16,464  

2023
     US$ (Note 2.5)
656
1,441
222
2,319

Apart from the aforementioned restricted share units, up to 1,446,875 shares can be issued in the form of restricted share unit to eligible
grantees that the board of the Group or a committee that board delegated its powers or authority determined appropriate with immediate
effect of being fully vested, which are defined as special awards and are subject to terms and conditions under 2018 Plan. For the year
ended  December  31,  2020,  the  Group  granted  1,328,120  such  restricted  share  units  to  employees.  All  the  restricted  share  units  were
vested as of December 31, 2021.

The following table sets forth the restricted share units subject to terms and conditions under 2020 Plan for the periods presented:

Outstanding as of December 31, 2020

Vested

Outstanding as of December 31, 2021

     Weighted
average
exercise
price
US$

     Weighted
average
remaining
contractual
term

Number of
restricted
share units

762,920  
(762,920) 
—  

1.00  
1.00  
—  

9.65  
—  
—  

Aggregate
intrinsic
value
US$
14,877
—
—

Share-based compensation expenses related to these restricted share units are included in:

Research and development expenses
Administrative expenses
Equity in loss of affiliates

2021
RMB

4,156  
54,011  
720  
58,887  

Year Ended December 31, 

2022
RMB

RMB

—  
—  
—  
—  

2023
     US$ (Note 2.5)
—
—
—
—

—  
—  
—  
—  

F-47

    
 
 
 
 
    
    
    
 
 
 
 
    
    
 
 
 
    
    
    
 
 
 
 
Table of Contents

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(e) 2021 Plan

On May 28, 2021, the Group adopted 2021 Plan. Under the 2021 Plan, the maximum aggregate number of shares authorized to be issued
is 12,023,618 ordinary shares, provided that the maximum number of shares to be issued in the form of restricted share units shall not
exceed 6,011,809 ordinary shares.

Stock options granted to employees under the 2021 Plan are graded vesting in four years with 25% vesting each year. For the years ended
December 31, 2021, 2022 and 2023, the Group granted 2,698,245, 2,787,738 and 322,575 stock options to its employees, respectively.
519,377 options and 1,569,157 were exercisable as of December 31, 2022 and 2023, respectively.

The following table sets forth the stock options activities of 2021 Plan for the year ended December 31,2023:

Outstanding as of December 31, 2020

Granted
Forfeited

Outstanding as of December 31, 2021

Granted
Forfeited
Expired

Outstanding as of December 31, 2022

Granted
Forfeited
Expired

Outstanding as of December 31, 2023
Exercisable as of December 31, 2023

     Weighted
average
exercise
price
US$

     Weighted
average
remaining
contractual
term

Number of
shares

Aggregate
intrinsic
value
US$ 

—  
2,698,245  
(253,805) 
2,444,440
2,787,738
(880,304)
(46,202)
4,305,672  
322,575
(770,989)
(401,300)
3,455,958
1,569,157  

—  
26.43  
26.39  
26.44
9.20
18.21
26.39
17.32  
6.20
15.31
14.34
17.07
18.07  

—  
—  
—  

9.57
—
—
—
8.89  
—
—
—
7.88
7.69  

—
—
—
—
—
—
—
—
—
—
—
—
—

A summary of non-vested stock option activities for the year ended December 31, 2023 is presented below:

Non-vested at December 31, 2022

Granted
Vested
Forfeited

Non-vested at December 31, 2023

F-48

Number of shares

3,786,295  
322,575  
(1,451,080)
(770,989) 
1,886,801  

Weighted average
grant-date
fair value
US$

1.76
1.07
7.22
7.81
8.36

    
    
 
 
 
 
 
    
    
 
 
 
 
Table of Contents

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(e) 2021 Share Incentive Plan (“2021 Plan”) (Continued)

Stock options granted to the employees were measured at fair value on the dates of grant using the Binomial Option Pricing Model with
the following assumptions:

Expected volatility
Risk-free interest rate (per annum)
Exercise multiple
Expected dividend yield
Time to maturity (in years)

2021

Year Ended December 31,

2022

2023

51.77%-54.37 % 53.66%-58.97 %
1.88%-3.53 %
2.20-2.80
—
10

1.44%-1.68 %
2.20-2.80
—
10

59.49 %
3.88 %
2.80
—
10

The expected volatility was estimated based on the historical volatility of comparable peer public companies with a time horizon close to
the expected term of the Group’s options. The risk-free interest rate was estimated based on the yield to maturity of U.S. treasury bonds
denominated  in  US$  for  a  term  consistent  with  the  expected  term  of  the  Group’s  options  in  effect  at  the  option  valuation  date.  The
expected exercise multiple was estimated as the average ratio of the stock price to the exercise price when employees would decide to
voluntarily  exercise  their  vested  options.  As  the  Group  did  not  have  sufficient  information  of  past  employee  exercise  history,  it  was
estimated by referencing to a widely-accepted academic research publication. Expected dividend yield is zero as the Group has never
declared or paid any cash dividends on its shares, and the Group does not anticipate any dividend payments in the foreseeable future.
Time to maturity equals to the contract life of the option.

Share-based compensation expenses related to the stock options of 2021 Plan are included in:

Year Ended December 31, 

Research and development expenses
Administrative expenses
Equity in loss of affiliates

2021
RMB
20,430  
35,226  

—

55,656  

2022
RMB
36,104  
75,980  
2,715
114,799  

RMB

8,540  
25,683  
1,538
35,761  

2023
     US$ (Note 2.5)
1,203
3,617
217
5,037

Restricted share units granted to employees under the 2021 Plan will be exercisable under the following items:

(1) 1/3 of the awarded restricted share units shall vest based on the following time attribution:(i) a vesting of 25% of the time attribution
based  restricted  share  units  on  the  first  anniversary  of  the  applicable  adoption  date;(ii)  a  vesting  of  25%  of  the  time  attribution  based
restricted  share  units  on  the  second  anniversary  of  the  applicable  adoption  date;(iii)  a  vesting  of  25%  of  the  time  attribution  based
restricted share units on the third anniversary of the applicable adoption date;(iv) a vesting of 25% of the time attribution based restricted
share units on the fourth anniversary of the applicable adoption date.

(2) 1/3  of  the  awarded  restricted  share  units  shall  vest  based  on  the  Group’s  weighted  average  share  price  during  any  consecutive
90 days within one year after the adoption date of 2021 Plan (the “Share Price Based Awards”):

a vesting of 75% of the Share Price Based Awards on the first anniversary of the adoption date of 2021 Plan, if the Group’s

i.
weighted average share price reaches the first share price level as approved by the Board;

a  vesting  of  100%  of  the  Share  Price  Based  Awards  on  the  first  anniversary  of  the  adoption  date  of  2021  Plan,  if  the

ii.
Group’s weighted average share price reaches the second share price level as approved by the Board;

F-49

    
     
     
     
 
 
 
 
 
    
    
    
 
 
 
Table of Contents

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(e) 2021 Share Incentive Plan (“2021 Plan”) (continued)

In the event that any share issuance in connection with any share split, share dividend, reclassification or other similar event occurs, the
target  share  price  herein  shall  be  adjusted  accordingly  with  the  proportion  of  additional  share  issuance.  In  the  event  that  the  average
market value of NASDAQ Biotechnology Index falls by more than 20% from the adoption date of the 2021 Plan, it shall be deemed as a
decline of the market, and the Group shall adjust the vesting schedule as appropriate.

(3) 1/3 of the awarded restricted share units shall vest based on the performance conditions as approved by the Board (the “Performance
Conditions Based Awards”):

i.

a vesting of 75% of the Performance Conditions Based Awards if more than nine (including nine) but less than twelve of

the fifteen performance conditions have been met on or before the first anniversary of the adoption date;

ii.

a vesting of all of Performance Conditions Based Awards if more than twelve (including twelve) of the fifteen performance

conditions have been met on or before the first anniversary of the adoption date;

As of December 31, 2021, it is probable that the 2/3 of the awarded restricted share units are fully vested because it is probable that the
Group’s weighted average share price can reach the second share price level as approved by the Board during any consecutive 90 days
within one year after the adoption date of 2021 Plan, and more than twelve of the fifteen performance conditions will be met on or before
the first anniversary of the adoption date.

The following table sets forth the restricted share units of 2021 Plan for the period presented:

Outstanding as of December 31, 2020

Granted
Forfeited

Outstanding as of December 31, 2021

Granted
Vested
Forfeited

Outstanding as of December 31, 2022

Granted
Vested
Forfeited

Outstanding as of December 31, 2023

     Weighted
average
exercise
price
US$

     Weighted
average
remaining
contractual
term

Number of
restricted
share units

Aggregate
intrinsic
value
US$

—  
1,827,166  
(170,913) 
1,656,253
821,215
(1,139,587)
(301,908)
1,035,973
2,080,299
(1,494,415)
(206,519)
1,415,338  

—  
—  
—  
—
—
—
—
—
—
—
—
—  

—  
—  
—  

9.57
—
—
—
8.55
—
—
—
8.82  

—
—
—
34,126
—
—
—
2,266
—
—
—
1,169

F-50

    
    
 
 
 
 
Table of Contents

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(e) 2021 Share Incentive Plan (“2021 Plan”) (continued)

A summary of non-vested restricted share units activities for year ended December 31, 2023 is presented below:

Non-vested at December 31, 2022

Granted
Vested
Forfeited

Non-vested at December 31, 2023

Number of restricted 
share units

Weighted average
grant-date fair value
US$

1,035,973
2,080,299  
(1,494,415)
(206,519) 
1,415,338  

5.19
2.21
5.94
11.75
6.46

Share-based compensation expenses related to the restricted share units of 2021 Plan are included in:

Research and development expenses
Administrative expenses
Equity in loss of affiliates

(f) 2022 Share Incentive Plan (“2022 Plan”)

Year Ended December 31, 

2021
RMB
44,227
73,332  
—  
117,559  

2022
RMB
46,649
99,708  
4,077  
150,434  

RMB
10,495
25,471  
403  
36,369  

2023
     US$ (Note 2.5)
1,478
3,588
57
5,123

On June 17, 2022, the Group adopted 2022 Plan. Under the 2022 Plan, the maximum aggregate number of shares authorized to be issued
is 13,148,594 ordinary shares, provided that the maximum number of shares to be issued in the form of restricted share units shall not
exceed 5,478,577 ordinary shares.

Stock options granted to employees under the 2022 Plan are graded vesting in four years with 25% vesting each year. For the years ended
December  31,  2022  and  2023,  the  Group  granted  nil  and  6,672,944  stock  options  to  its  employees,  respectively.  1,468,707  were
exercisable as of December 31, 2023.

The following table sets forth the stock options activities of 2022 Plan for the year ended December 31, 2023:

Outstanding as of December 31, 2022

Granted
Forfeited
Expired

Outstanding as of December 31, 2023
Exercisable as of December 31, 2023

F-51

     Weighted      Weighted     

Number of
shares

—  
6,672,944  
(812,507) 
(124,933) 
5,735,504  
1,468,707  

average
exercise
price
US$

average
remaining
contractual
term

Aggregate
intrinsic
value
US$

—  
2.60  
2.41  
2.41  
2.62  
2.62  

—  
—  
—  
—  
8.95  
8.74  

—
—
—
—
—
—

    
    
 
 
 
    
    
    
 
 
 
    
 
 
 
 
 
 
Table of Contents

I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(f) 2022 Share Incentive Plan (“2022 Plan”) (continued)

A summary of non-vested stock option activities for the year ended December 31, 2023 is presented below:

Non-vested at December 31, 2022

Granted
Vested
Forfeited

Non-vested at December 31, 2023

Number of shares

     Weighted average

grant-date fair value
US$

—  
6,672,944  
(1,593,640) 
(812,507) 
4,266,797  

—
1.33
1.34
1.28
1.34

Stock options granted to the employees were measured at fair value on the dates of grant using the Binomial Option Pricing Model with
the following assumptions:

Expected volatility
Risk-free interest rate (per annum)
Exercise multiple
Expected dividend yield
Time to maturity (in years)

Year Ended December 31,
2023

59.18 %
3.89 %

2.20-2.80
—
10

The expected volatility was estimated based on the historical volatility of comparable peer public companies with a time horizon close to
the expected term of the Group’s options. The risk-free interest rate was estimated based on the yield to maturity of U.S. treasury bonds
denominated  in  US$  for  a  term  consistent  with  the  expected  term  of  the  Group’s  options  in  effect  at  the  option  valuation  date.  The
expected exercise multiple was estimated as the average ratio of the stock price to the exercise price when employees would decide to
voluntarily  exercise  their  vested  options.  As  the  Group  did  not  have  sufficient  information  of  past  employee  exercise  history,  it  was
estimated by referencing to a widely-accepted academic research publication. Expected dividend yield is zero as the Group has never
declared or paid any cash dividends on its shares, and the Group does not anticipate any dividend payments in the foreseeable future.
Time to maturity equals to the contract life of the option.

Share-based compensation expenses related to the stock options of 2022 Plan are included in:

Research and development expenses
Administrative expenses
Equity in loss of affiliates

Year Ended December 31,

2021
RMB

2022
RMB

—  
—  
—  
—  

RMB
13,452  
20,231  
—  
33,683  

2023
     US$(Note 2.5)
1,895
2,849
—
4,744

—  
—  
—  
—  

F-52

    
 
 
 
 
 
    
 
 
 
 
 
 
 
    
    
    
 
 
 
 
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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(f) 2022 Share Incentive Plan (“2022 Plan”) (Continued)

Restricted share units granted to employees under the 2022 Plan will be exercisable under the following items:

(1) 1/2 of the awarded restricted share units shall vest based on the following time attribution:(i) a vesting of 25% of the time attribution
based  restricted  share  units  on  the  first  anniversary  of  the  applicable  adoption  date;(ii)  a  vesting  of  25%  of  the  time  attribution  based
restricted  share  units  on  the  second  anniversary  of  the  applicable  adoption  date;(iii)  a  vesting  of  25%  of  the  time  attribution  based
restricted share units on the third anniversary of the applicable adoption date;(iv) a vesting of 25% of the time attribution based restricted
share units on the fourth anniversary of the applicable adoption date.

(2)  1/2  of  the  awarded  restricted  share  units  shall  vest  based  on  performance  conditions  as  approved  by  the  board  (the  “Performance
Conditions Based Awards”):

i.

a vesting of 75% of the Performance Conditions Based Awards on the initial vesting date if more than eight but less than

ten of the performance conditions have been met on or before the first anniversary of the adoption date; and;

ii.

a  vesting  of  100%  of  the  Performance  Conditions  Based  Awards  on  the  initial  vesting  date  if  more  than  ten  of  the

performance conditions have been met on or before the first anniversary of the Adoption Date.

As of December 31, 2023, it is probable that the 1/2 of the awarded restricted share units are fully vested because more than ten of the
thirteen performance conditions will be met on or before the first anniversary of the adoption date.

The following table sets forth the restricted share units of 2022 Plan for the period presented:

Outstanding as of December 31, 2022

Granted
Vested
Forfeited

Outstanding as of December 31, 2023

     Weighted      Weighted     

Number of
restricted
share units

—  
4,883,452  
(2,912,354) 
(416,374) 
1,554,724  

average
exercise
price
US$

average
remaining
contractual
term

Aggregate
intrinsic
value
US$

—  
—  
—  
—  
—  

—  
—  
—  
—  
9.02  

—
—
—
—
1,284

A summary of non-vested restricted share units activities for year ended December 31, 2023 is presented below:

Non-vested at December 31, 2022

Granted
Vested
Forfeited

Non-vested at December 31, 2023

F-53

Number of restricted
share units

     Weighted average

grant-date fair value
US$

—  
4,883,452  
(2,912,354) 
(416,374) 
1,554,724  

—
2.41
2.41
2.41
2.41

    
    
    
 
 
 
 
 
    
    
 
 
 
 
 
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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

13. SHARE-BASED COMPENSATION (CONTINUED)

(f) 2022 Share Incentive Plan (“2022 Plan”) (Continued)

Share-based compensation expenses related to the restricted share units of 2022 Plan are included in:

Research and development expenses
Administrative expenses
Equity in loss of affiliates

(g) Establishment of Biomaster Trust

2021
RMB

—  
—  
—  
—  

Year Ended December 31,
2022
RMB

RMB
26,370  
35,425  
—  
61,795  

2023
     US$(Note 2.5)
3,714
4,990
—
8,704

—  
—  
—  
—  

Biomaster Trust was established under the trust deed dated October 23, 2019, between the Company and TMF Trust (HK) Limited, or
TMF  Trust,  as  the  trustee  of  the  Biomaster  Trust.  Through  the  Biomaster  Trust,  the  Company’s  ordinary  shares  and  other  rights  and
interests  under  awards  granted  pursuant  to  2017  Plan  and  2018  Plan  may  be  provided  to  certain  recipients  of  equity  awards.  Upon
satisfaction of vesting conditions, TMF Trust will exercise the equity awards and transfer the relevant ordinary shares and other rights
and  interests  under  the  equity  awards  to  the  relevant  grant  recipients  with  the  consent  of  the  advisory  committee  of  Biomaster  Trust.
TMF  Trust  shall  not  exercise  the  voting  rights  attached  to  such  ordinary  shares  unless  otherwise  directed  by  the  advisory  committee,
whose members shall be appointed by I-Mab. The Company has the power to direct the relevant activities of Biomaster Trust and it has
the ability to use its power over the Biomaster Trust to affect its exposure to returns. Therefore, the assets and liabilities of the Biomaster
Trust are included in the Group’s consolidated balance sheets. Biomaster Trust was dissolved in 2023.

Share-Based Compensation Expense

The allocation of share-based compensation expense was as follows:

Research and development expenses
Administrative expenses
Equity in loss of an affiliate

Year Ended December 31, 

2021

RMB
201,926
406,683  
13,267  
621,876  

2022

RMB
117,876
239,272  
13,852  
371,000  

2023

RMB
66,758
126,244  
4,815  
197,817  

     US$ (Note 2.5)
9,403
17,781
678
27,862

As  of  December  31,  2023,  there  was  RMB91,024  (US$12,820)  of  unrecognized  share-based  compensation  cost  related  to  non-vested
share options and restricted share units. That deferred cost is expected to be recognized over a weighted average vesting period of 1.32
years.  To  the  extent  the  actual  forfeiture  rate  is  different  from  the  original  estimate,  actual  share-based  compensation  related  to  these
awards may be different from the expectation.

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS

The following is a description of the Group’s significant licensing and collaboration agreements entered into from January 1, 2017 to
December 31, 2023.

A. In-Licensing Arrangements

Licensing Agreement with MorphoSys AG (“MorphoSys”)

In November 2017, the Group entered into a license and collaboration agreement with MorphoSys, with respect to the development and
commercialization of MOR202/TJ202, MorphoSys´s proprietary investigational antibody against CD38 (the “CD38 product”).

Under this agreement, MorphoSys granted to the Group an exclusive, royalty-bearing, sublicensable license to exploit MOR202/TJ202
for  any  human  therapeutic  or  diagnostic  purpose  in  the  licensed  territory,  namely  mainland  China,  Hong  Kong,  Macau  and  Taiwan
(collectively “Greater China”).

Pursuant to this agreement, the Group granted to MorphoSys an exclusive license to its rights in any inventions that the Group make
while exploiting the CD38 product under this agreement, solely to exploit the CD38 product outside of Greater China.

Pursuant  to  this  agreement,  the  Group  paid  to  MorphoSys  an  upfront  license  fee  of  US$20.0  million  (equivalent  to  approximately
RMB132.7 million). The Group also agreed to make milestone payments to MorphoSys, conditioned upon the achievement of certain
development,  regulatory  and  commercial  milestones,  in  the  aggregate  amount  of  US$98.5  million  (equivalent  to  approximately
RMB653.5 million). Such milestones include first patient dosed in human clinical trials, marketing approval, and first annual net sales of
CD38 products covered by the agreement in excess of a certain amount.

In addition, the Group is required to pay tiered low-double-digit royalties to MorphoSys on a country-by-country and product-by-product
basis  during  the  term,  commencing  with  the  first  commercial  sale  of  a  relevant  licensed  product  in  Greater  China.  Unless  terminated
earlier  in  accordance  with  the  terms  thereof,  this  agreement  will  remain  in  effect  until  the  expiration  of  the  Group’s  last  payment
obligation under the agreement.

In  2017,  the  Group  paid  US$20.0  million  (equivalent  to  approximately  RMB132.7  million)  upfront  fee  to  MorphoSys,  which  was
recorded as research and development expense. No additional payments were made in 2018. Due to the uncertainty involved in meeting
these developments and commercialization based targets, the Group evaluated and concluded that the remaining milestones are still not
probable as of December 31, 2018. In March and April 2019, the project achieved the first and second milestone and the Group paid
US$8.0 million (equivalent to approximately RMB55.7 million) of milestone fees to MorphoSys, which was recorded as research and
development  expense  in  the  consolidated  statement  of  comprehensive  loss  for  the  year  ended  December  31,  2019.  No  additional
payments were made for the years ended December 31, 2021, 2022 and 2023 as no milestone has been achieved.

Following the divestiture of the Greater China assets and business operations as disclosed in Notes 22 and as of the date of this annual
report, the Company is no longer a contracting party of the license and collaboration agreement with MorphoSys with respect to TJ202
(felzartamab) and will no longer assume any rights, title, interest and obligations thereof.

Licensing Agreement with Genexine, Inc. (“Genexine”)

In December 2017, the Group entered into an intellectual property agreement with Genexine with respect to GX-I7/TJ107, a long-acting
IL-7 cytokine. Under this agreement, the Group obtained an exclusive, sublicensable and transferable license to use and otherwise exploit
certain intellectual property in connection with the pre-clinical and clinical development, manufacturing, sale and distribution of GX-I7
to treat cancer in Greater China.

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS (CONTINUED)

A. In-Licensing Arrangements (continued)

Licensing Agreement with Genexine, Inc. (“Genexine”) (continued)

Under  the  terms  of  the  agreement,  the  Group  made  an  upfront  payment  of  US$12.0  million  (equivalent  to  approximately  RMB79.6
million)  to  Genexine  which  was  recorded  as  a  research  and  development  expense  in  January  2018.  The  Group  also  agreed  to  make
milestone payments in the aggregate amount of US$23.0 million (equivalent to approximately RMB152.6 million), conditioned upon the
achievement of certain development milestones, including completion of Phase 2 and Phase 3 clinical studies and new drug application
(“NDA”) or biologic license application (“BLA”) approval in Greater China.

Further,  the  Group  agreed  to  make  milestone  payments  in  the  aggregate  amount  of  US$525.0  million  (equivalent  to  approximately
RMB3,482.7 million), conditioned upon the achievement of certain cumulative net sales of GX-I7 up to US$2,000 million. The Group
also is required to pay Genexine a low-single-digit percentage royalty in respect of the total annual net sales of GX-I7. The aforesaid
milestones and royalties (other than the upfront payment) will be reduced by 50% following the entry of a generic version of GX-I7 in
China, Hong Kong, Macau and Taiwan without the consent or authorization of the Group or any of the Group’s sublicensees.

Unless terminated earlier in accordance with the terms thereof, this agreement will remain in effect until the later of (i) the expiry of the
last to expire patent of the licensed intellectual property that includes a valid claim for Greater China and that covers the composition of
GX-I7; and (ii) 15 years from the date of the first commercial sale of GX-I7.

No additional payments to Genexine were made in the year ended December 31, 2021, 2022 and 2023. Due to the uncertainty involved
in meeting these development and commercialization based targets, the Group evaluated and concluded that the remaining milestones are
still not probable as of December 31, 2021, 2022 and 2023.

In  May  2020,  the  Group  and  Genexine  entered  into  an  amendment  to  this  agreement  whereby  both  parties  desire  to  establish
collaboration  on  TJ107  GBM  Study  in  Greater  China  Under  the  terms  of  the  expanded  collaboration,  the  Group  will  be  mainly
responsible  for  using  commercially  reasonable  efforts  to  conduct  the  Phase  2  GBM  clinical  trial  in  Greater  China,  and  Genexine  will
share  the  development  strategies,  data  and  costs  for  success  of  this  clinical  trial.  The  Group  shall  undertake  to  bear  two-thirds  (2/3)
proportion of the clinical development costs and Genexine shall undertake to bear one-third (1/3) proportion of these costs. For the year
ended December 31, 2021, the costs incurred for the development of this new indication was RMB13.2 million and thus RMB8.8 million
expense was recorded in the consolidated statement of comprehensive loss. For the year ended December 31, 2022, the costs incurred for
the  development  of  this  new  indication  was  RMB7.0  million  and  thus  RMB4.7  million  expense  was  recorded  in  the  consolidated
statement of comprehensive loss. For the year ended December 31, 2023, the costs incurred for the development of this new indication
was RMB1.7 million and thus RMB1.2 million expense was recorded in the consolidated statement of comprehensive loss.

Following the divestiture of the Greater China assets and business operations as disclosed in Notes 22 and as of the date of this annual
report, the Company has not completed the assignment of the intellectual property license agreement with Genexine with respect to GX-
I7/TJ107 (efineptakin alfa).

Licensing Agreement with MorphoSys

In November 2018, the Group entered into a license and collaboration agreement with MorphoSys for MorphoSys´s proprietary antibody
(MOR210/TJ210)  directed  against  C5aR  (the  “C5aR  Agreement”).  Under  this  agreement,  the  Group  obtained  an  exclusive,  royalty-
bearing license to explore, develop and commercialize certain anti-C5aR antibodies in Greater China and South Korea.

F-56

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS (CONTINUED)

A. In-Licensing Arrangements (continued)

Licensing Agreement with MorphoSys (continued)

The Group will perform and fund all global development activities related to the development of MOR210/TJ210 in Greater China and
South Korea, including all relevant clinical trials (including in the U.S. and China) and all development activities required for IND filing
in  the  US  as  well  as  CMC  development  of  manufacturing  processes.  MorphoSys  retains  rights  in  respect  of  development  and
commercialization of MOR210/TJ210 in the rest of the world.

Under  the  terms  of  the  agreement,  the  Group  also  agreed  to  make  milestone  payments  conditional  upon  the  achievement  of  certain
development milestones and certain annual net sales of anti-C5aR antibodies. The Group is also required to pay to MorphoSys tiered
mid-single-digit royalties on annual net sales of anti-C5aR antibody products within the licensed territory.

In 2018, the Group paid US$3.5 million (equivalent to approximately RMB23.2 million) upfront fee to MorphoSys, which was recorded
as research and development expense in the consolidated statement of comprehensive loss for the year ended December 31, 2018. No
additional payments were made in the year ended December 31, 2019. In August 2020, the project achieved the first milestone and the
Group  paid  US$1.0  million  (equivalent  to  approximately  RMB6.9  million)  of  milestone  fees  to  Morphosys,  which  was  recorded  as
research and development expenses in the consolidated statement of comprehensive income for the year ended December 31, 2020. In
January  2021,  the  project  achieved  the  second  milestone  and  the  Group  paid  US$1.5  million  (equivalent  to  approximately  RMB9.7
million)  of  milestone  fees  to  Morphosys  and  the  related  withholding  tax  of  RMB1.1  million,  which  was  recorded  as  research  and
development expenses in the consolidated financial statements of comprehensive loss for the year ended December 31, 2021. Due to the
uncertainty  involved  in  meeting  these  development  and  commercialization  based  targets,  the  Group  evaluated  and  concluded  that  the
remaining milestones are still not probable as of December 31, 2021, 2022 and 2023.

Summarized financial information related to the above agreement is presented below:

Years Ended December 31, 
Research and Development Expense

2023
2022
2021

     Upfront Fees      Milestones

—
—  
—   US$

—
—  
1,500  

Extension/ Termination of 
agreements

Amortization of prepaid 
research and 
development

—
—  
—  

—
—  
—  

As of December 31,

Intangible asset balance
—
—
—

In  June  2022,  Morphosys  entered  into  an  equity  participation  agreement  and  license  agreements  to  allow  HIBio  to  develop  and
commercialize  MorphoSys’  felzartamab,  an  anti-CD38  antibody,  and  MOR210,  an  anti-C5aR1  antibody.  Under  the  terms  of  the
agreements, HIBio will obtain exclusive rights to develop and commercialize felzartamab and MOR210 across all indications worldwide,
with the exception of Greater China for felzartamab and Greater China and South Korea for MOR210. Upon signing, MorphoSys also
receives an upfront payment of US$15 million for MOR210. Subject to the terms agreed in the C5aR Agreement, I-Mab is entitled to
share certain economics upon certain clinical milestones in the U.S. Accordingly, the Group received US$0.9 million from MorphoSys
and recorded RMB6.0 million in revenue in the consolidated statement of comprehensive loss for the year ended December 31, 2022. No
revenue from MorphoSys was recognized for the year ended December 31, 2023.

F-57

    
    
    
 
 
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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS (CONTINUED)

A. In-Licensing Arrangements (continued)

Licensing Agreement with MorphoSys (continued)

Following the divestiture of the Greater China assets and business operations as disclosed in Notes 22 and as of the date of this annual
report,  the  Company  is  no  longer  a  contracting  party  of  the  license  and  collaboration  agreement  with  MorphoSys  with  respect  to
MOR210/TJ210 and will no longer assume any rights, title, interest and obligations thereof.

Licensing Agreement with MacroGenics

In  July  2019,  the  Group  entered  into  a  license  and  collaboration  agreement  with  MacroGenics,  Inc.  for  development  and
commercialization of an Fc-optimized antibody known as enoblituzumab that targets B7-H3, including in combination with other agents,
such  as  the  anti-PD-1  antibody  known  as  MGA012,  in  the  People’s  Republic  of  China,  Hong  Kong,  Macau  and  Taiwan  (“Greater
China”).  Under  this  agreement,  the  Group  obtained  an  exclusive,  sublicenseable,  royalty-bearing  license  to  MacroGenics’  patents  and
know-how  to  develop  and  commercialize  the  enoblituzumab  product,  and  a  combination  regimen  of  enoblituzumab  and  MGA012,  in
Greater China during the term of the agreement.

In  exchange  for  these  rights,  in  addition  to  certain  financial  consideration,  the  Group  will  grant  to  MacroGenics  a  royalty-free,
sublicenseable, license outside of Greater China, to the patents and know-how that are related to the enoblituzumab product or useful or
necessary for MacroGenics to develop or commercialize the enoblituzumab product or a product containing MGA012, and combinations
thereof. The license is (i) non-exclusive with respect to the enoblituzumab product, and (ii) exclusive with regard to MGA012.

Pursuant  to  the  agreement,  the  Group  paid  an  upfront  fee  of  US$15.0  million  (equivalent  to  approximately  RMB104.4  million)  to
MacroGenics, which was recorded as research and development expense in the consolidated statement of comprehensive loss for the year
ended December 31, 2019. No additional payments were made in the year ended December 31, 2020. Under the terms of the agreement,
the Group also agreed to pay MacroGenics development milestone fees of up to US$75.0 million and regulatory milestones fees of up to
US$60.0 million, respectively, and tiered double-digit royalties (ranging from mid-teens to twenty percent) based on annual net sales in
the  territories.  In  September  2021,  the  project  achieved  the  first  milestone  and  the  Group  paid  around  US$4.5  million  (equivalent  to
approximately RMB28.9 million) of milestone fees to MacroGenics, which was recorded as research and development expenses in the
consolidated  statement  of  comprehensive  loss  for  the  year  ended  December  31,  2021.  No  additional  payments  were  made  in  the  year
ended December 31, 2022.

The Group is responsible for all development costs in Greater China. MacroGenics is responsible for all development costs in the rest of
the world, except that the Group is responsible for 20% of the costs incurred in (i) activities supporting global clinical trials in which the
Group participates, (ii) certain CMC activities for material intended to be used in clinical trials in Greater China, and (iii) companion
diagnostic development and validation for indications being studied in Greater China.

Due to the uncertainty involved in meeting these development and commercialization based targets, the Group evaluated and concluded
that the remaining milestones are still not probable as of December 31, 2021.

F-58

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS (CONTINUED)

A. In-Licensing Arrangements (continued)

Licensing Agreement with MacroGenics (continued)

Summarized financial information related to the above agreement is presented below:

Year ended December 31, 
Research and Development Expense

Upfront Fees

Milestones

—     
—  
—   US$

—     
—  
4,484  

Extension/ Termination of 
agreements

Amortization of prepaid
research and
development

—     
—  
—  

—     
—  
—  

As of December 31,

Intangible asset balance
—
—
—

2023
2022
2021

In July 2022, due to an unexpected high incidence of fatal bleeding, MacroGenenics terminated a phase 2 study of enoblituzumab as a
combination  therapy  with  PD-1  antibody  or  PD-1/LAG3  bispecific  antibody  in  patients  with  head  and  neck  cancers  (NHSCC).  The
Company has exercised its termination right under the license and collaboration agreement with MacroGenics by serving a termination
notice to MacroGenics on August 29, 2022. The termination took effect in February 2023.

Licensing Agreement with Ferring

In November 2016, the Company, as the licensee, entered into a license and sublicense agreement with Ferring International Center SA
(“Ferring”),  with  respect  to  Olamkicept  (TJ301),  a  potential  highly  differentiated  IL-6  blocker  for  ulcerative  colitis  and  other
autoimmune  diseases  (the  “Ferring  In-licensing  Agreement”).  Under  the  Ferring  Agreement,  Ferring  granted  to  I-Mab  an  exclusive
license to research, commercially develop, make, import, use, sell, dispose of, offer to sell or dispose of the licensed product in China
(including Hong Kong, Macau), Taiwan and Korea. In July 2018, the Company sub-licensed the above license to I-Mab Hong Kong.

In September 2020, I-Mab Hong Kong agreed to assign all rights and obligations/ownership of Target Pipelines (including TJ301) to I-
Mab Hangzhou (see Note 8 (a)). The Group entered into a sublicense agreement with I-Mab Hangzhou (“TJ301 Sublicense Agreement”),
under which the Group sublicensed to I-Mab Hangzhou an exclusive, sublicensable license to develop, manufacture and commercialize
olamkicept in mainland China, Hong Kong, Macau, Taiwan and South Korea.

In the second half year of 2021, I-Mab Hangzhou achieved one of the development milestones by completing the Phase IIA study report
in China. Upon the achievement of the milestone, I-Mab Hangzhou made a milestone payment with the amount of US$3 million to I-
Mab Hong Kong. As I-Mab Hangzhou’s payment of US$3 million is just passthrough payment to I-Mab, and will be eventually paid to
Ferring, which does not have any financial impact to I-Mab. The Company recorded it as a payable to Ferring in the consolidated balance
sheets for the year ended December 31, 2021 . The US$3 million payable was settled in December 2022.

F-59

    
 
 
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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS (CONTINUED)

A. In-Licensing Arrangements (continued)

Other In-Licensing Arrangements

In  addition  to  the  above  arrangements,  the  Group  has  entered  into  other  various  in-licensing  and  collaboration  agreements  with  third
party  licensors  to  develop  and  commercialize  drug  candidates.  Based  on  the  terms  of  these  agreements  the  Group  is  contingently
obligated to make additional material payments upon the achievement of certain contractually defined milestones. The Group recorded
US$1.1  million  (equivalent  to  approximately  RMB6.8  million)  upfront  payment  and  US$2.9  million  (equivalent  to  approximately
RMB19.8  million)  milestone  payment  as  research  and  development  expenses  during  the  year  ended  December  31,  2021.  The  Group
recorded RMB0.5 million (US$0.07 million) upfront payment and RMB2.8 million (US$0.4 million) milestone payment as research and
development expenses during the year ended December 31, 2022. The Group recorded nil upfront payment and RMB1.5 million (US$0.2
million) milestone payment as research and development expenses during the year ended December 31, 2023. As of December 31, 2023,
under  the  terms  of  the  agreements,  the  licensors  are  eligible  to  receive  from  the  Group  up  to  an  aggregate  of  approximately
US$173.0  million  (equivalent  to  approximately  RMB1,225.3  million)  in  milestone  payments  upon  the  achievement  of  contractually
specified development milestones and sales milestones, such as regulatory approval for the drug candidates, which may be before the
Group has commercialized the drug or received any revenue from sales of such drug candidate, which may never occur.

B.Out-Licensing and Collaboration Arrangements

Collaboration Agreement with ABL Bio

In July 2018, the Group and ABL Bio entered into a collaboration agreement (the “ABL Bio Collaboration”) whereby both parties agreed
to collaborate to develop three PD-L1 based bispecific antibodies by using ABL Bio’s proprietary BsAb technology and commercialize
them in their respective territories, which, collectively, include Greater China and South Korea, and other territories throughout the rest
of the world if both parties agree to do so in such other territories during the performance of the agreement.

At contract inception, both I-Mab and ABL Bio participate actively in the research and development activity. Also, the parties share the
risk  of  failure  of  the  BsAb  products  and  share  the  income  of  licensing,  so  this  contract  meet  the  criteria  of  the  definition  of  a
collaborative  arrangement,  the  Group  categorized  this  agreement  within  the  scope  ASC  808.  Prior  to  commercialization,  the  Group
recorded the share of the expenses incurred by the collaboration for the development of three PD-L1 based bispecific antibodies products
in  research  and  development  expense  in  the  consolidated  statements  of  comprehensive  loss.  For  the  year  ended  December  31,  2021,
RMB27.9 million expenses were incurred by the Group and RMB20.7 million expenses were incurred by ABL Bio. Accordingly, the
Group  recorded  RMB24.3  million  (50%  cost  sharing)  of  expenses  in  the  Group’s  consolidated  statement  of  comprehensive  loss  for
the year ended December 31, 2021. For the year ended December 31, 2022, RMB63.1 million expenses were incurred by the Group and
RMB33.7  million  expenses  were  incurred  by  ABL  Bio.  Accordingly,  the  Group  recorded  RMB48.4  million  (50%  cost  sharing)  of
expenses  in  the  Group’s  consolidated  statement  of  comprehensive  loss  for  the  year  ended  December  31,  2022.  For  the  year  ended
December 31, 2023, RMB54.1 million expenses were incurred by the Group and RMB49.6 million expenses were incurred by ABL Bio.
Accordingly,  the  Group  recorded  RMB51.8  million  (50%  cost  sharing)  of  expenses  in  the  Group’s  consolidated  statement  of
comprehensive loss for the year ended December 31, 2023.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS (CONTINUED)

B. Out-Licensing and Collabration Arrangements (continued)

Collaboration Agreements with Tracon Pharmaceuticals, Inc. (“Tracon”)

In  November  2018,  the  Group  entered  into  collaboration  agreements  with  Tracon,  under  which  both  parties  agreed  to  co-develop  the
Group’s proprietary CD73 antibody, TJD5 (the “TJD5 Agreement”) and co-develop up to five BsAbs (the “BsAbs Agreement”). Both
agreements  may  be  terminated  by  either  party  for  the  other  party’s  uncured  material  breach,  bankruptcy  or  insolvency  or  for  safety
reasons. In addition, the agreement in respect of TJD5 may be terminated by the Group: (i) for convenience within a certain period upon
completing different clinical stages subject to certain payments and royalties, based on the clinical stage, that would be owed to Tracon
upon  the  exercise  of  such  termination  for  convenience;  (ii)  in  the  event  that  Tracon  causes  the  Phase  1  study  timeline  to  be  delayed
beyond the agreed extension periods; or (iii) if the Group decides to end the development of the collaborative product prior to its first
commercial  sale.  Further,  prior  to  the  first  commercial  sale,  Tracon  may  deem  this  agreement  to  be  terminated  by  the  Group  if  it
reasonably believes that the Group has discontinued all meaningful development of the collaborative product for at least 12 months and
certain other conditions are met. Additionally, in March 2019, the Group agreed with Tracon and F. Hoffmann-La Roche Ltd (“Roche”)
on  a  clinical  supply  agreement  for  Roche  to  supply  atezolizumab  for  use  in  clinical  studies  under  the  collaboration  agreement  with
Tracon.  As  of  December  31,  2019,  no  payments  or  royalties  are  due  under  this  agreement.  The  Group  has  recorded  US$0.02  million
(equivalent  to  approximately  RMB0.11  million),  nil,  nil  of  research  and  development  costs  in  the  consolidated  statement  of
comprehensive loss for the year ended December 31, 2021, 2022 and 2023.

In April 2020, Tracon issued a notice of dispute with respect to the TJD5 Agreement and the BsAbs Agreement. The disputes relating to
the TJD5 Agreement and the BsAbs Agreement are the subject of a binding arbitration proceeding under the Rules of Arbitration of the
International Chamber of Commerce before an arbitration tribunal.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS (CONTINUED)

B. Out-Licensing and Collabration Arrangements (continued)

Collaboration Agreements with Tracon Pharmaceuticals, Inc. (“Tracon”) (Continued)

In February 2021, the Group sent Tracon a notice to terminate the TJD5 Agreement, which would result in a prespecified termination fee
of US$9.0 million owing to Tracon. The Group accrued and recorded this termination fee of US$9.0 million (equivalent to approximately
RMB58.0  million)  as  administrative  expenses  in  the  consolidated  financial  statements  of  comprehensive  loss  for  the  year  ended
December 31, 2021.

On April 25, 2023, the arbitration award determined that the TJD5 Agreement has been terminated for a pre-agreed termination fee of
US$9.0 million plus interest payable pursuant to the original agreement. For the year ended December 31, 2022, the Group accrued and
recorded  the  interest  for  the  termination  fee  with  an  amount  of  US$0.6  million  (equivalent  to  approximately  RMB4.2  million)  as
administrative expenses in the consolidated financial statements of comprehensive loss. The tribunal also confirmed the termination of
the BsAb Agreement. Based on the arbitration award, I-Mab will bear a portion of Tracon’s legal fees and costs, totaling approximately
US$13.5  million  (equivalent  to  approximately  RMB91.3  million),  which  was  recorded  as  administrative  expenses  in  the  consolidated
financial statements of comprehensive loss for the year ended December 31, 2022. The final amount paid to Tracon in July 2023 was
US$22.0 million (equivalent to approximately RMB155.2 million) based on both parties’ further negotiation. The variance between the
actual payment and accrued expenses of US$1.1 million (equivalent to approximately RMB8.0 million) was recorded as a deduction of
administrative expenses in the consolidated financial statements of comprehensive loss for the year ended December 31, 2023.

Licensing Agreement with CSPC Pharmaceutical Group Limited (“CSPC”)

In December 2018, the Group entered into a product development agreement with CSPC. The Group granted to CSPC exclusive, non-
transferable,  non-irrevocable  and  sublicensable  rights  in  the  PRC  (excluding  Hong  Kong,  Macau  and  Taiwan)  to  develop  and
commercialize TJ103 for treating type 2 diabetes.

CSPC is responsible for developing, obtaining market approval and commercializing the licensed products. The Group is responsible for
transferring the manufacturing technology of the licensed products to CSPC and assisting CSPC in the continued optimization of such
manufacturing technology thereafter.

In  consideration  of  the  license,  CSPC  agreed  to  pay  the  Group  an  upfront  fee  of  RMB15.0  million  and  milestone  payments  in  an
aggregate amount of RMB135.0 million conditioned upon achieving certain clinical development and regulatory approval milestones. In
addition,  the  Group  is  also  entitled  to  royalties  of  up  to  low-double-digit  percentages  in  respect  of  the  total  annual  net  sales  of  the
products after its commercialization in the PRC. On January 31, 2022, the Group and CSPC entered into an amendment to revise the
second milestone payment from RMB10 million to RMB8.5 million.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS (CONTINUED)

B. Out-Licensing and Collabration Arrangements (continued)

Licensing Agreement with CSPC Pharmaceutical Group Limited (“CSPC”) (Continued)

The Group determined that this collaboration is more reflective of a vendor-customer relationship and therefore within the scope of ASC
606. Under this agreement, the only one performance obligation was to grant TJ103 license to CSPC. Considering that the achievements
of milestones are constrained such that the transaction price shall initially only include upfront payment and subsequently, once another
milestone was achieved (that means when uncertainty associated with the variable consideration is subsequently resolved), the additional
milestone payment shall be included in the total transaction price when it is no longer probable that a significant reversal of cumulative
revenue would occur in future periods. As of December 31, 2018, the amount received of RMB14.2 million (net of VAT) was recorded as
advance from customers in the consolidated balance sheet. In February 2019, an additional amount of RMB0.8 million (net of VAT) was
received,  and  the  license  was  also  approved  by  China  intellectual  property  office  in  May  2019.  The  first  milestone  was  achieved  in
September 2019 and the amount of RMB15.0 million (net of VAT) was received according to the terms of the agreement. Accordingly,
RMB30.0  million  was  recognized  as  revenue  in  the  consolidated  statements  of  comprehensive  loss  for  the  year  ended  December  31,
2019.  No  additional  revenue  was  recognized  in  the  year  ended  December  31,  2020  as  no  further  milestone  has  been  achieved.  The
second  milestone  was  achieved  in  November  2021  and  RMB8.5  million  was  recognized  as  revenue  in  the  consolidated  statements  of
comprehensive loss for the year ended December 31, 2021. No revenue was recognized in the consolidated statements of comprehensive
loss for the years ended December 31, 2022 and 2023.

Following the divestiture of the Greater China assets and business operations as disclosed in Notes 22 and as of the date of this annual
report, the Company is no longer a contracting party of the product development agreement with CSPC with respect to TJ103 and will no
longer assume any rights, title, interest and obligations thereof.

Strategic Alliance Agreement with PT Kalbe Genexine Biologics (“KG Bio”)

In  March  2020,  the  Group  entered  into  a  strategic  partnership  with  Kalbe  Genexine  Biologics  (“KG  Bio”)  to  grant  a  right  of  first
negotiation  for  an  exclusive  license  for  the  development  and  commercialization  of  two  I-Mab-discovered  product  candidates:
uliledlimab, a highly differentiated anti-CD73 antibody in Phase 1 development for advanced solid tumors (“First Program”), and an I-
Mab product candidate (“Second Program”) to be agreed upon by both parties in certain regions. Through this agreement, both parties
intend to negotiate the terms that will be reflected in definitive agreements for each prospective program covered under this agreement.

If and when the Group and KG Bio enter into the definitive licensing agreement, the Group will be eligible to receive from KG Bio an
aggregate  amount  of  up  to  approximately  US$340  million,  including  an  upfront  payment  and  subsequent  payments  conditional  upon
achieving  certain  development  and  commercial  milestones.  KG  Bio  will  pay  the  Group  tiered  royalties  in  the  low  to  mid-teen
percentages on net sales from certain regions. As the right of first negotiation has not been exercised and the definitive agreement has not
been entered into as of December 31, 2021, 2022 and 2023, no revenue was recognized during the years ended December 31, 2021, 2022
and 2023.

In June 2023, the Company terminated the first negotiation agreement with KG Bio, pursuant to which, KG Bio no longer has a right of
first negotiation for the exclusive right to commercialize uliledlimab in southeast asia and other regions.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS (CONTINUED)

B. Out-Licensing and Collabration Arrangements (continued)

Global Strategic Partnership with AbbVie

On September 3, 2020, the Group, through I-Mab Biopharma (Shanghai) Co., Ltd. and I-Mab Biopharma US Limited, each a wholly-
owned subsidiary of the Group, entered into a broad global strategic partnership with AbbVie.

Pursuant  to  this  collaboration,  the  Group  will  grant  AbbVie  a  global  license,  excluding  Mainland  China,  Macau,  and  Hong  Kong,  to
develop and commercialize lemzoparlimab (also known as TJC4), an innovative anti-CD47 monoclonal antibody internally discovered
and  developed  by  I-Mab  for  the  treatment  of  multiple  cancers.  The  Group  will  retain  all  rights  to  develop  and  commercialize
lemzoparlimab (as well as certain other compounds directed against CD47) in Mainland China, Macau, and Hong Kong. The Group is
also responsible for performing the development activities at its sole cost and expense as outlined in the initial development plan. Such
initial  development  activities  consist  of  two  studies,  Study  I  and  Study  II.  Study  I  is  conducted  in  the  United  States  evaluating
lemzoparlimab  in  combination  with  pembrolizumab  or  rituximab  in  patients  with  relapsed  or  refractory  solid  tumors  and  lymphoma.
Study  II  is  conducted  in  Mainland  China  evaluating  the  safety,  tolerability,  pharmacokinetics,  pharmacodynamics  and  preliminary
efficacy of lemzoparlimab in patients with acute myeloid leukemia (AML) or myelodysplastic syndrome (MDS). AbbVie will conduct
further global clinical trials (which the Group may elect to co-fund) to evaluate lemzoparlimab in multiple cancers.

Potential  collaboration  on  future  CD47-related  therapeutic  agents  is  also  allowed  for  under  this  arrangement,  including  CD47-based
bispecific antibodies and combination therapies with lemzoparlimab and AbbVie’s venetoclax (Venclexta ®). Each party will have the
opportunity, subject to rights of first negotiation to further licenses, to explore certain of each other’s related CD47-antibody programs in
their respective territories.

A  joint  governance  committee  was  established  as  set  forth  in  the  agreement,  functioning  as  an  oversight  and  governance  mechanism.
Both  parties  will  participate  in  the  joint  governance  committee  to  facilitate  decision-making  during  the  terms  of  the  collaborative
endeavor.  Furthermore,  the  Group  and  AbbVie  will  share  manufacturing  responsibilities,  with  AbbVie  having  the  opportunity  to
manufacture supply outside of Mainland China, Hong Kong and Macau and the Group being the primary manufacturer for supply for
Mainland China, Hong Kong and Macau.

Upon the satisfaction of all the pre-effect date covenants, the collaborative agreement took effect on December 10, 2020, on which date
the Group was entitled to a non-refundable upfront payment of US$180 million. In addition, the Group has received milestone payment
of  US$20  million  from  AbbVie  and  is  eligible  to  receive  up  to  US$1.74  billion  in  further  success-based  development,  regulatory  and
sales  milestone  payments  for  lemzoparlimab,  of  which  US$840  million  are  based  on  clinical  development  and  regulatory  approval
milestones, with the remainder based on commercial milestones. Upon commercialization of lemzoparlimab, AbbVie will also pay tiered
royalties from low-to-mid teen double-digit percentages on global net sales outside of Mainland China, Macau, and Hong Kong.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS (CONTINUED)

B. Out-Licensing and Collabration Arrangements (continued)

Global Strategic Partnership with AbbVie (continued)

The Group identified three performance obligations: (1) grant of lemzoparlimab license upon the effective date, (2) delivering the Study I
initial development services, and (3) delivering the Study II initial development services. The total transaction price under the agreement
for the years ended December 31, 2020 and 2021 is US$250 million consisting of (i) the upfront payment of US$180 million upon the
effective  date,  (ii)  the  first  milestone  payment  of  US$20  million  upon  the  achievement  of  the  first  milestone  event  in  late
December 2020, and (iii) the second milestone payment of US$50 million as of December 31, 2020 and 2021 as the Group deemed that
the  achievement  of  the  second  milestone  event  is  probable  as  of  December  31,  2020  and  2021  that  a  significant  reversal  of  revenue
would  not  occur.  The  achievements  of  the  remaining  development  and  regulatory  based  milestone  events  are  constrained  as  of
December 31, 2020 and 2021, and will be included in the transaction price when uncertainty associated with the variable consideration is
subsequently resolved. Sales-based milestones and royalties will be recognized when the subsequent sales occur.

As  of  December  31,  2020  and  2021,  the  non-constrained  consideration  of  US$250  million  is  then  allocated  to  the  three  performance
obligations  based  on  the  relative  stand-alone  selling  price.  For  the  grant  of  lemzoparlimab  license,  the  Group  adopted  an  income
approach based on key assumptions and several factors including, but not limited to estimated market demand, stand-alone selling price
by  making  reference  to  market  comparable,  development  timeline,  regulatory  risks,  future  revenue  potential  and  discount  rate.  The
allocated price is US$228.8 million. The entire US$228.8 million (equivalent to approximately RMB1,502.9 million) was recognized as
revenue at the point of the license transfer at the effective date. For the Study I and Study II initial development services, a cost-plus
margin approach is utilized. The allocated price to Study I and Study II is US$11.0 million and US$10.2 million respectively. These two
performance obligations are determined to be satisfied over time. The Group uses a cost-to-cost input method to measure progress as that
method  best  depicts  the  transfer  of  the  two  performance  obligations  under  the  agreement.  As  of  December  31,  2020,  the
cumulative percentages complete in the cost-to-cost input method for Study I and Study II were estimated to approximate 17% and 41%
respectively.  As  a  result,  US$1.8  million  (equivalent  to  approximately  RMB12.0  million)  and  US$4.2  million  (equivalent  to
approximately RMB27.8 million) were recognized as revenue for the year ended December 31, 2020 in the consolidated statement of
comprehensive income for Study I and Study II respectively, resulting in a contract asset of US$34.8 million (RMB 227.4 million) for
this  agreement  as  of  December  31,  2020  in  the  consolidated  balance  sheets.  As  of  December  31,  2020,  the  upfront  payment  of
US$180 million was received by the Group. The 1st milestone payment of US$20 million was subsequently collected by the Group in
March 2021. As of December 31, 2021, the cumulative percentages complete in the cost-to-cost input method for Study I and Study II
were estimated to approximate 53% and 51% respectively. As a result, US$4.0 million (equivalent to approximately RMB25.6 million)
and US$0.9 million (equivalent to approximately RMB6.0 million) were recognized as revenue for the year ended December 31, 2021 in
the  consolidated  financial  statements  of  comprehensive  loss  for  Study  I  and  Study  II  respectively,  resulting  in  an  addition  of  contract
asset of US$4.9 million (equivalent to approximately RMB31.6 million) for this agreement, and the total contract asset related to this
agreement was US$39.7 million (RMB 253.8 million) as of December 31, 2021.

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS (CONTINUED)

B. Out-Licensing and Collabration Arrangements (continued)

Global Strategic Partnership with AbbVie (continued)

In August 2022, the Group and AbbVie entered into an amendment to the original license and collaboration agreement dated September
3, 2020. The Group will be eligible to receive, and AbbVie will pay, up to US$1.295 billion in the development, regulatory, and sales
milestone  payments,  and  the  tiered  royalties  at  rates  from  mid-to-high  single-digit  percentages  on  global  net  sales  outside  of  Greater
China for certain new anti-CD47 antibodies currently in development, or the original milestone payments and tiered royalties for other
licensed products. The Group has the exclusive right to develop and commercialize all licensed products under the agreement in Greater
China. AbbVie discontinued the global Phase 1b study of lemzoparlimab combination therapy with AZA and venetoclax in patients with
MDS and acute myeloid leukemia (AML), and a Phase 1b study of lemzoparlimab in patients with relapsed/refractory multiple myeloma.
As a result of the amendment to the original collaboration arrangement in the second half of 2022, the Group estimated the amount of
consideration  to  which  it  will  be  entitled  to  under  the  amended  agreement  and  determined  the  probability  of  achieving  the  second
milestone payment of US$50 million is lowered. The Group concluded it is not probable that a significant reversal of revenue will not
occur  once  the  uncertainty  associated  with  the  milestone  payment  is  resolved,  the  variable  consideration  of  US$50  million  associated
with the second milestone is excluded from the transaction price at the amendment date. The consideration of US$200 million was re-
allocated to the three performance obligations based on the relative stand-alone selling price at the amendment date. The allocated price
for the grant of lemzoparlimab license, Study I and Study II is US183.0 million, US$8.8 million and US$ 8.2 million, respectively. As of
the  amendment  date,  based  on  the  updated  transaction  price  and  the  progress  of  each  performance  obligation,  the  Group  recorded  a
cumulative  catch-up  adjustment  which  resulted  in  a  reduction  of  revenue  of  US$48.0  million  (equivalent  to  RMB  314.2  million),  a
reversal  of  contract  assets  of  US$39.8  million,  and  a  recognition  of  contract  liabilities  of  US$8.2  million  in  the  second  half  of  2022.
Offsetting this amount, the revenue of US$5.8 million (equivalent to RMB 39.9 million) was recorded for the ongoing Study I and Study
II initial development services for the year ended December 31, 2022. As of December 31, 2022, the cumulative percentages complete in
the cost-to-cost input method for Study I and Study II were estimated to be approximate 84% and 88%, respectively. The accumulated
revenue  recognized  for  Study  I  and  Study  II  was  US$7.4  million  and  US$7.2  million,  respectively,  as  of  December  31,  2022.  As  of
December 31, 2022, the balance of contract assets related to the collaboration arrangement with AbbVie was nil, while the balance of
contract liabilities was US$2.4 million (RMB16.6 million).

On September 21, 2023, the Group received a notice from AbbVie, terminating the aforementioned license and collaboration agreement.
The termination of the license and collaboration agreement in its entirety by AbbVie is based on the previous program discontinuation
and  AbbVie’s  strategic  decision.  The  termination  took  effect  on  November  20,  2023.  The  termination  did  not  affect  the  upfront  and
milestone  payments  of  $200  million  that  the  Group  already  received  from  AbbVie.  As  a  result,  contract  liabilities  of  US$2.4  million
(equivalent to approximately RMB16.9 million) related to Study I and Study II were recognized as revenue for the year ended December
31, 2023.

Strategic collaboration with Jumpcan

On  November  10,  2021,  the  Group  entered  into  a  strategic  collaboration  agreement  (the  “Jumpcan  Agreement”)  with  Jumpcan
Pharmaceutical  Group  (“Jumpcan”),  a  China  pharmaceutical  company  specialized  in  and  committed  to  pediatric  medicines,  for  the
development, manufacturing and commercialization of I-Mab’s highly differentiated long-acting recombinant human growth hormone,
eftansomatropin alfa (the “TJ101” and “Licensed Product”) in mainland China (the “Territory”).

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NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS (CONTINUED)

B. Out-Licensing and Collabration Arrangements (continued)

Strategic collaboration with Jumpcan (continued)

Under the collaboration agreement, I-Mab will continue to lead the ongoing registrational Phase 3 clinical trial of eftansomatropin alfa in
pediatric growth hormone deficiency (PGHD). The two companies will share costs of manufacturing tech transfer, process optimization
and new formulation development. I-Mab will be the marketing authorization holder (MAH) of the product and supply the product at
agreed cost to Jumpcan. Jumpcan will be responsible for commercializing the product and developing new indications in collaboration
with I-Mab in mainland China. I-Mab will provide clinical, manufacturing and academic support.

According to the terms of the collaboration agreement, Jumpcan will make an upfront payment of RMB 224 million to I-Mab and, upon
achievement of development, registration and sales milestones, certain milestone payments of up to RMB 1.792 billion, making the non-
royalty  payments  a  total  of  up  to  RMB  2.016  billion.  In  addition,  I-Mab  and  Jumpcan  will  share  profits  generated  from
commercialization  of  the  product  in  mainland  China  on  a  50/50  basis,  pursuant  to  which  I-Mab  will  be  entitled  to  receive  tiered  low
double-digit royalties on net sales.

The Group performed assessment and concluded that all the promise identified, including the grant of the license to Jumpcan, Phase III
clinical trial in PGHD and CMC development under the Jumpcan Agreement have been bundled into a single performance obligation.
The  amounts  of  the  transaction  price  allocable  to  this  performance  obligation  are  deferred  until  the  control  of  the  manufactured
commercial drug product has begun to transfer to Jumpcan. For the year ended December 31, 2021, the Group received the upfront fee of
RMB224  million  from  Jumpcan  and  recorded  it  as  contract  liabilities  in  the  consolidated  balance  sheet  as  of  December  31,  2021.
According to the terms of the collaboration agreement, Jumpcan shall undertake to bear 50% proportion of the CMC cost occurred by I-
Mab  after  the  effective  date  of  this  agreement.  For  the  year  ended  December  31,  2022  and  2023,  the  Group  received  the  payment  of
RMB22.0  million  and  from  RMB45.2  million  Jumpcan  related  to  the  cost  sharing  and  recorded  it  as  contract  liabilities  in  the
consolidated balance sheet, respectively.

Following the divestiture of the Greater China assets and business operations as disclosed in Notes 22 and as of the date of this annual
report,  the  Company  has  not  completed  the  assignment  of  the  strategic  collaboration  agreement  with  Jumpcan  with  respect  to
eftansomatropin alfa (TJ101).

Cell Line Collaboration with Ferring

In  May  2022,  the  Group  entered  into  an  amended  and  restated  license  and  sublicense  agreement  and  a  cell  line  and  manufacturing
collaboration agreement (“Cell Line Collaboration Agreement”) with Ferring, under which the Group granted to Ferring an exclusive,
perpetual and transferrable sublicense, with the right to grant further sublicenses to sublicensees, under all of the intellectual properties
licensed to I-Mab by I-Mab’s business partner to research, develop, make, import, use and sell olamkicept as expressed by or produced
by cell lines created by I-Mab’s business partner and its affiliates, in any human indications in the territories other than Greater China and
Korea. The Group also granted to Ferring an exclusive, perpetual and royalty-free license, with right of sublicense to sublicensees, under
the intellectual property owned or controlled by I-Mab which relates to cell lines created by I-Mab’s business partner and its affiliates, for
the  research,  development,  making,  using  or  selling  of  olamkicept,  including  prespecified  patents  and  know-how  and  improvements
thereto.  As  of  December  31,  2022,  Ferring  paid  to  the  Group  the  milestone  payment  as  specified  in  the  Cell  Line  Collaboration
Agreement. This payment was recorded in revenue in the consolidated statements of comprehensive loss for the year ended December
31, 2022. Ferring also agreed to make milestone payments to us, conditioned on the achievement of certain development milestones in
Ferring’s licensed territory.

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

14. LICENSING AND COLLABORATION ARRANGEMENTS (CONTINUED)

B. Out-Licensing and Collabration Arrangements (continued)

Cell Line Collaboration with Ferring (continued)

In May 2022, the Group entered into a supplementary sublicensing agreement to the TJ301 Sublicense Agreement (“TJ301 Supplemental
Sublicense Agreement”) with I-Mab Hangzhou. Pursuant to the TJ301 Supplemental Sublicense Agreement, I-Mab Hong Kong should
pay I-Mab Hangzhou US$2.75 million (equivalent to approximately RMB18.6 million) to reimburse the effort and contribution from I-
Mab  Hangzhou  in  the  development  of  Wuxi  Cell  Line,  which  was  recorded  as  the  reduction  of  revenue  in  the  consolidated  financial
statements of comprehensive loss for the year ended December 31, 2022.

Breakdown of licensing and collaboration revenue

The breakdown of licensing and collaboration revenue was as follows:

Recognition in the year
Reduction in the year
Revenues from AbbVie
Revenues from other partners

15. OTHER INCOME (EXPENSES), NET

2021
RMB
31,615  
—  
31,615  
8,500  
40,115  

Year Ended December 31,
2022
RMB
39,891  
(314,181) 
(274,290) 
24,625  
(249,665) 

RMB
16,814  
—  
16,814  
—  
16,814  

2023
     US$(Note 2.5)
2,368
—
2,368
—
2,368

The following table summarizes other income (expenses), net recognized for the years ended December 31, 2021, 2022 and 2023:

Income of incentive payment from depository bank
Fair value change of short-term and other investments
Fair value change of put right liabilities
Net foreign exchange gains (losses)
Subsidy income (1)
Losses in deconsolidation of a subsidiary
Others

2021
RMB

2,395  
30,360  
16,628  
25,373  
9,216  
—  
(810) 
83,162  

Year Ended December 31
2022
RMB

RMB

2023

2,821  
(13,549) 
34,260  
(175,391) 
25,470  
—  
(198) 
(126,587) 

8,569  
26,461  
(7,888) 
(60,704) 
5,354  
(7,905) 
(1,996) 
(38,109)

US$
(Note 2.5)

1,207
3,727
(1,111)
(8,550)
754
(1,113)
(282)
(5,368)

(1) For  the  year  ended  December  31,  2022,  subsidy  income  consists  primarily  of  the  government  grant  of  RMB18.9  million.  The
government  grant  was  granted  by  the  project  management  office  of  Shanghai  Zhangjiang  Science  City  and  the  management
committee of Shanghai Free Trade Zone to support the research and development activities in the local region.

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

16. NET LOSS PER SHARE

Basic and diluted net loss per share for each of the periods presented are calculated as follows:

Numerator:
Net loss attributable to I-Mab
Net loss attributable to ordinary shareholders
Denominator:
Denominator for basic calculation-weighted average number of common

2021
RMB

Year Ended December 31
2023
2022
RMB
RMB

     US$ (Note 2.5)

(in thousands, except for share and per share data)

(2,331,541)
(2,331,541) 

(2,507,317)
(2,507,317) 

(1,465,694)
(1,465,694) 

(206,439)
(206,439)

shares outstanding

Denominator for diluted loss per share calculation

  174,707,055   189,787,292   191,423,850   191,423,850
  174,707,055   189,787,292   191,423,850   191,423,850

Net loss per share - basic and diluted

(13.35) 

(13.21) 

(7.66) 

(1.08)

The  effects  of  all  outstanding  restricted  share  units,  certain  stock  options  and  warrants  have  been  excluded  from  the  computation  of
diluted  loss  per  share  for  the  years  ended  December  31,  2021,  2022  and  2023  as  their  effects  would  be  anti-dilutive.  The  potentially
dilutive securities that have not been included in the calculation of diluted net loss per share as their inclusion would be anti-dilutive are
as follows:

Restricted share units
Stock options
Warrants

17. EMPLOYEE BENEFITS

2021

3,150,881  
14,584,833  
648,359  

Year Ended December 31
2022
484,395  
2,939,322  
—  

2023

1,543,009
617,707
—

Full time employees of the Group in the PRC participate in a government mandated defined contribution plan, pursuant to which certain
pension  benefits,  medical  care,  employee  housing  fund  and  other  welfare  benefits  are  provided  to  the  employees.  Chinese  labor
regulations  require  that  the  PRC  subsidiaries  of  the  Group  make  contributions  to  the  government  for  these  benefits  based  on  certain
percentage of the employees’ salaries, up to a maximum amount specified by the government. The Group has no legal obligation for the
benefits  beyond  the  contribution  made.  The  total  amounts  charged  to  the  consolidated  statements  of  comprehensive  loss  for  such
employee benefits amounted to approximately RMB26,426, RMB35,332 and RMB26,401 for the years ended December 31, 2021, 2022
and 2023, respectively.

F-69

    
    
    
 
 
   
   
 
  
 
    
    
    
 
 
 
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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

18. COMMITMENTS AND CONTINGENCIES

Contingencies

The Group is a party to or an assignee of license and collaboration agreements that may require it to make future payments relating to
milestone  fees  and  royalties  on  future  sales  of  licensed  products  (see  Note  14).  In  April  2020,  Tracon  issued  a  notice  of  dispute  with
respect to the TJD5 Agreement and the BsAbs Agreement. The disputes relating to the TJD5 Agreement and the BsAbs Agreement are
the  subject  of  a  binding  arbitration  proceeding  under  the  Rules  of  Arbitration  of  the  International  Chamber  of  Commerce  before  an
arbitration tribunal. In April 2023, the Group received the result of the arbitration, which is further discussed in Note 14.

On February 6, 2024, the Company entered into definitive agreements with I-Mab Hangzhou and its investors which provide that the
Company’s  wholly  owned  subsidiary,  I-Mab  Hong  Kong,  will  transfer  the  equity  interests  it  holds  in  I-Mab  Hangzhou  to  certain
participating  shareholders  of  I-Mab  Hangzhou  in  exchange  for  extinguishment  of  the  existing  repurchase  obligations  owed  by  I-Mab
Hong Kong to those shareholders.

In connection with the divestiture of the Greater China assets and business operations, the Company has transferred the equity interests it
held  in  I-Mab  Hangzhou  to  certain  participating  shareholders  of  I-Mab  Hangzhou  in  exchange  for  extinguishment  of  the  existing
repurchase obligations owed by I-Mab Hong Kong to those shareholders in the amount of approximately US$183 million. However, the
non-participating  shareholders  of  I-Mab  Hangzhou  have  initiated  legal  proceedings  against  I-Mab  Hong  Kong  and  the  Company  in
connection  with  the  aforementioned  transaction.  On  January  31,  2024,  the  non-participating  shareholders  of  I-Mab  Hangzhou,
commenced  arbitration  against  I-Mab  Hong  Kong  before  China  International  Economic  and  Trade  Arbitration  Commission  Zhejiang
Sub-Commission. These non-participating shareholders seek monetary relief amounting to US$17.36 million as of January 29, 2024 in
total  and  an  order  that  I-Mab  Hong  Kong  pay  all  arbitration  fees  and  property  preservation  fees  incurred  by  them.  The  arbitration
proceeding before the Zhejiang arbitration sub-commission is still pending. The Company has not yet received the notice of hearing and
is currently unable to predict the outcome of the arbitration.

As  of  December  31,  2023,  the  Group  did  not  record  any  liabilities  for  the  arbitration.  Information  available  prior  to  issuance  of  the
financial statements did not indicate that it is probable that a liability had been incurred at the date of the financial statements and the
Company is also unable to reasonably estimate the range of any liability or possible loss, if any.

The Group did not have significant long-term obligations, or guarantees as of December 31, 2022 and 2023.

Capital commitments

The  capital  expenditures  related  to  property,  equipment  and  software  contracted  for  as  of  December  31,  2022  and  2023  but  not
recognized in the Group’s consolidated financial statements were RMB4,392 and nil, respectively.

F-70

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

19. RELATED PARTY BALANCES AND TRANSACTIONS

The table below sets forth the major related parties and their relationships with the Group for the years ended December 31, 2021, 2022
and 2023:

Name of related parties

     Relationship with the Group

CMAB Biopharma (Suzhou) Inc.

Jiangsu Taslydiyi Pharmaceutical Co., Ltd.

I-Mab Biopharma (Hangzhou) Co., Limited

Controlled  by  the  ultimate  controlling  party  of  a  principal
shareholder of the Group before April 30, 2021
Controlled  by  the  ultimate  controlling  party  of  a  principal
shareholder of the Group before December 9, 2021
Subsidiary of the Group before September 15, 2020; Affiliate of the
Group after September 15, 2020

Details of related party balances as of December 31, 2022 and 2023 are as follows:

Prepayments and other receivables

I-Mab Hangzhou

Accruals and other payables

I-Mab Hangzhou

As of December 31, 

2022
RMB

8,231

RMB

14,208

2023
     US$ (Note 2.5)
2,001

As of December 31, 

2022
RMB

64,782

RMB

35,058

2023
     US$ (Note 2.5)
4,938

Details of related party transactions for the years ended December 31, 2021, 2022 and 2023 are as follows:

Receipt of CRO and CMC services - recognized in research and development expenses

For the year ended December 31, 

Jiangsu Taslydiyi Pharmaceutical Co., Ltd.
I-Mab Hangzhou

Revenue sharing - recognized as deduction of revenue

I-Mab Hangzhou (Note 14)

2021
RMB

2,697  
2,465  

2022
RMB

—  
84,673  

RMB

—  
96,359  

2023
     US$ (Note 2.5)
—
13,572

For the year ended December 31, 

2021
RMB

—  

2022
RMB
18,583  

RMB

2023
     US$ (Note 2.5)
—

—  

F-71

    
    
    
    
    
    
    
 
 
    
    
    
 
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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

19. RELATED PARTY BALANCES AND TRANSACTIONS (CONTINUED)

Expenses paid on behalf of an affiliate

I-Mab Hangzhou

Provision of FTE and other services - recognized in other income

I-Mab Hangzhou

Amounts received on behalf of an affiliate

I-Mab Hangzhou

Amounts received related to the sublicense agreement

I-Mab Hangzhou (Note 14)

Amounts paid by an affiliate on behalf of the Group

I-Mab Hangzhou

20. CONCENTRATION OF CREDIT RISK

For the year ended December 31, 

2021
RMB
17,649

2022
RMB

—  

RMB

2023
     US$ (Note 2.5)
—

—  

For the year ended December 31, 

2021
RMB
11,691

2022
RMB

—  

RMB

2023
     US$ (Note 2.5)
—

—  

For the year ended December 31, 

2021
RMB

281

2022
RMB

—  

RMB

2023
     US$ (Note 2.5)
—

—  

For the year ended December 31, 

2021
RMB
19,102

2022
RMB

—  

RMB

2023
     US$ (Note 2.5)
—

—  

For the year ended December 31, 

2021

RMB
25,448

2022

RMB

837     

2023

RMB

US$ (Note 2.5)
10

69     

Financial instruments that are potentially subject to significant concentration of credit risk consist of cash and cash equivalents, restricted
cash,  short-term  investments,  and  other  receivables.  The  carrying  amounts  of  cash  and  cash  equivalents  and  short-term  investments
represent  the  maximum  amount  of  loss  due  to  credit  risk.  As  of  December  31,  2022  and  2023,  all  of  the  Group’s  cash  and  cash
equivalents,  restricted  cash  and  short-term  investments  were  held  by  major  financial  institutions  located  in  the  PRC  and  international
financial  institutions  outside  of  the  PRC  which  management  believes  are  of  high  credit  quality  and  continually  monitors  the  credit
worthiness of these financial institutions. With respect to the other receivables, the Group performs on-going credit evaluations of the
financial condition of its customers and counterparties.

F-72

    
    
    
 
    
    
    
 
    
    
    
 
    
    
    
 
    
    
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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

21. RESTRICTED NET ASSETS

The Group’s ability to pay dividends may depend on the Group receiving distributions of funds from its PRC subsidiary. Relevant PRC
statutory laws and regulations permit payments of dividends by the Group’s PRC subsidiary only out of its retained earnings, if any, as
determined  in  accordance  with  PRC  accounting  standards  and  regulations.  The  results  of  operations  reflected  in  the  consolidated
financial  statements  prepared  in  accordance  with  U.S.  GAAP  differ  from  those  reflected  in  the  statutory  financial  statements  of  the
Group’s PRC subsidiary.

In accordance with the Company law of the PRC, a domestic enterprise is required to provide statutory reserves of at least 10% of its
annual  after-tax  profit  until  such  reserve  has  reached  50%  of  its  respective  registered  capital  based  on  the  enterprise’s  PRC  statutory
accounts. A domestic enterprise is also required to provide discretionary surplus reserve, at the discretion of the Board of Directors, from
the  profits  determined  in  accordance  with  the  enterprise’s  PRC  statutory  accounts.  The  aforementioned  reserves  can  only  be  used  for
specific  purposes  and  are  not  distributable  as  cash  dividends.  The  Group’s  PRC  subsidiary  was  established  as  domestic  invested
enterprise and therefore is subject to the above mentioned restrictions on distributable profits.

For the years ended December 31, 2021, 2022 and 2023, no appropriation to statutory reserves was made because the PRC subsidiary
had substantial losses during such periods.

As a result of these PRC laws and regulations subject to the limit discussed above that require annual appropriations of 10% of after-tax
income to be set aside, prior to payment of dividends, as general reserve fund, the Group’s PRC subsidiary is restricted in their ability to
transfer a portion of their net assets to the Group.

Foreign  exchange  and  other  regulations  in  the  PRC  further  restrict  the  Company’s  PRC  subsidiaries  from  transferring  funds  to  the
Company in the form of dividends, loans and advances.

As of December 31, 2023, the net asset base for purposes of calculating the proportionate share of restricted net assets of consolidated
subsidiaries should be RMB0.1 million, while the Group has a consolidated shareholders’ equity. Therefore, as the restricted net assets of
consolidated subsidiaries do not exceed 25% of consolidated net assets as of the most recent fiscal year end, the Group is not required to
provide parent company financial information.

F-73

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I-MAB

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS
(All amounts in thousands, except for share and per share data, unless otherwise noted)

22. SUBSEQUENT EVENTS

On February 6, 2024, the Group entered into definitive agreements with I-Mab Hangzhou and its investors. Pursuant to the definitive
agreements,  the  Group  will  transfer  100%  of  the  outstanding  equity  interest  in  I-Mab  Shanghai,  a  wholly  owned  subsidiary  of  the
Company that operates the Company’s business in China to I-Mab Hangzhou for an aggregate consideration of the RMB equivalent of
up to US$80 million, contingent on the I-Mab Hangzhou’s achievement of certain future regulatory and sales-based milestone events.
The Group also retains a right of first negotiation outside of Greater China related to three future investigational new drug candidates.
This transaction was closed on April 2, 2024.  The definitive agreements also provide that the Company’s wholly owned subsidiary, I-
Mab Hong Kong, will transfer the equity interests it holds in I-Mab Hangzhou to certain participating shareholders of I-Mab Hangzhou
in exchange for extinguishment of the existing repurchase obligations owed by I-Mab Hong Kong to those shareholders (Note 8) in the
amount  of  approximately  US$183  million.  After  which  the  total  remaining  amount  of  potential  repurchase  obligations  owed  by  the
Group to the non-participating shareholders of I-Mab Hangzhou upon the closing of the transaction is expected to range from US$30
million to US$35 million, an amount that includes actual or potential claims in legal proceedings by the non-participating shareholders
against I-Mab Hong Kong and the Company in connection with the aforementioned transaction. Meanwhile, the Group participated in
the Series C fundraising of I-Mab Hangzhou for an equity interest subscription of US$19 million in cash.

F-74

List of Principal Subsidiaries of I-MAB

EXHIBIT 8.1

Name of Subsidiary
I-Mab Biopharma Hong Kong Limited
I-Mab Biopharma US Ltd.
I-Mab Bio-tech (Tianjin) Co., Ltd.

Place of Incorporation
Hong Kong
United States
People’s Republic of China

    
  
  
  
EXHIBIT 12.1

Certification by the Principal Executive Officer
Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Raj Kannan, certify that:

1.

I have reviewed this annual report on Form 20-F of I-Mab (the “Company”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary
to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to
the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all

material respects the financial condition, results of operations and cash flows of the Company as of, and for, the periods presented in
this report;

4. The Company’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as
defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange
Act Rules 13a-15(f) and 15d-15(f)) for the Company and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our

supervision, to ensure that material information relating to the Company, including its consolidated subsidiaries, is made known
to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed
under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of
financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the Company’s disclosure controls and procedures and presented in this report our conclusions

about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on
such evaluation; and

(d) Disclosed in this report any change in the Company’s internal control over financial reporting that occurred during the period

covered by the annual report that has materially affected, or is reasonably likely to materially affect, the Company’s internal
control over financial reporting; and

5. The Company’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial
reporting, to the Company’s auditors and the audit committee of the Company’s board of directors (or persons performing the
equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which

are reasonably likely to adversely affect the Company’s ability to record, process, summarize and report financial information;
and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Company’s

internal control over financial reporting.

Date: April 30, 2024

/s/ Raj Kannan

By:
Name: Raj Kannan
Title: Director and Chief Executive Officer

EXHIBIT 12.2

Certification by the Principal Financial Officer
Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Joseph Skelton, certify that:

1.

I have reviewed this annual report on Form 20-F of I-Mab (the “Company”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary
to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to
the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all

material respects the financial condition, results of operations and cash flows of the Company as of, and for, the periods presented in
this report;

4. The Company’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as
defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange
Act Rules 13a-15(f) and 15d-15(f)) for the Company and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our

supervision, to ensure that material information relating to the Company, including its consolidated subsidiaries, is made known
to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed
under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of
financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the Company’s disclosure controls and procedures and presented in this report our conclusions

about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on
such evaluation; and

(d) Disclosed in this report any change in the Company’s internal control over financial reporting that occurred during the period

covered by the annual report that has materially affected, or is reasonably likely to materially affect, the Company’s internal
control over financial reporting; and

5. The Company’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial
reporting, to the Company’s auditors and the audit committee of the Company’s board of directors (or persons performing the
equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which

are reasonably likely to adversely affect the Company’s ability to record, process, summarize and report financial information;
and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Company’s

internal control over financial reporting.

Date: April 30, 2024

/s/ Joseph Skelton

By:
Name: Joseph Skelton
Title: Chief Financial Officer

Certification by the Principal Executive Officer
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

EXHIBIT 13.1

In connection with the Annual Report of I-Mab (the “Company”) on Form 20-F for the year ended December 31, 2023 as filed

with the Securities and Exchange Commission on the date hereof (the “Report”), I, Raj Kannan, Chief Executive Officer of the
Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my
knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations

of the Company.

Date: April 30, 2024

/s/ Raj Kannan

By:
Name: Raj Kannan
Title: Director and Chief Executive Officer

Certification by the Principal Financial Officer
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

EXHIBIT 13.2

In connection with the Annual Report of I-Mab (the “Company”) on Form 20-F for the year ended December 31, 2023 as filed

with the Securities and Exchange Commission on the date hereof (the “Report”), I, Joseph Skelton, Chief Financial Officer of the
Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my
knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations

of the Company.

Date: April 30, 2024

/s/ Joseph Skelton

By:
Name: Joseph Skelton
Title: Chief Financial Officer

Exhibit 15.1

26/F HKRI Centre One, HKRI Taikoo Hui,
288 Shimen Road (No. 1),
Shanghai 200041, P.R. China
T: (86-21) 5298-5488
F: (86-21) 5298-5492
junhesh@junhe.com

April 30, 2024

I-Mab
2440 Research Boulevard, Suite 400
Rockville, MD 20850
United States

Dear Sir/Madam:

We hereby consent to the reference of our name under the headings “Item 3. Key Information—D. Risk Factors—Risks Related to
Our Financial Position and Need for Additional Capital” and “Item 10. Additional Information—E. Taxation—PRC Taxation” in
I-Mab’s Annual Report on Form 20-F for the year ended December 31, 2023 (the “Annual Report”), which will be filed with the
Securities and Exchange Commission (the “SEC”) on the date hereof, and further consent to the incorporation by reference into
the Registration Statements on Form S-8 (No. 333-239871, No. 333-256603 and No. 333-265684) of I-Mab of the summary of our
opinions under the headings “Item 3. Key Information—D. Risk Factors—Risks Related to Our Financial Position and Need for
Additional Capital” and “Item 10. Additional Information—E. Taxation—PRC Taxation” in the Annual Report. We also consent
to the filing of this consent letter with the SEC as an exhibit to the Annual Report.

In giving such consent, we do not thereby admit that we come within the category of persons whose consent is required under
Section 7 of the Securities Act of 1933, or under the Securities Exchange Act of 1934, in each case, as amended, or the regulations
promulgated thereunder.

Very truly yours,

/s/ JunHe LLP
JunHe LLP

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-239871, No. 333-256603 and
No. 333-265684) of I-Mab of our report dated April 30, 2024 relating to the financial statements and the effectiveness of internal control
over financial reporting, which appears in this Form 20-F.

Exhibit 15.2

/s/ PricewaterhouseCoopers Zhong Tian LLP
Shanghai, the People’s Republic of China
April 30, 2024

Exhibit 15.3

Harney Westwood & Riegels
3501 The Center
99 Queen’s Road Central
Hong Kong
Tel: +852 5806 7800
Fax: +852 5806 7810

057369.0005

Date: 30 April 2024

I-Mab 天境生物
2440 Research Boulevard, Suite 400
Rockville, MD 20850
United States

Dear Sir or Madam

I-Mab 天境生物 (the Company)

We are attorneys-at-law qualified to practice in the Cayman Islands and have acted as Cayman Islands legal advisers to the
Company in connection with the filing by the Company with the United States Securities and Exchange Commission (the
SEC) of an annual report on Form 20-F for the year ended 31 December 2023 (the Form 20-F).

We hereby consent to the reference of our name under the headings “Item 3. Key Information—D. Risk Factors—General
Risks Related to Our ADSs,” “Item 5. Operating and Financial Review and Prospects–Taxation–Cayman Islands” and “Item
10. Additional Information—E. Taxation—Cayman Islands” in the Form 20-F and further consent to the incorporation by
reference  of  the  summary  of  our  opinion  under  those  headings  into  the  Company’s  Registration  Statements  on  Form  S-8
(No. 333-239871, No. 333-256603 and No. 333-265684).

We consent to the filing with the SEC of this consent letter as an exhibit to the Form 20-F. In giving such consent, we do not
thereby admit that we come within the category of persons whose consent is required under Section 7 of the Securities Act
of 1933, or under the Securities Exchange Act of 1934, in each case, as amended, or the regulations promulgated thereunder.

[signature page to follow]

The British Virgin Islands is Harneys Hong Kong office’s main jurisdiction of practice.
Jersey legal services are provided through a referral arrangement with Harneys (Jersey) which is an
independently owned and controlled Jersey law firm.
Resident Partners: A Au | M Chu | JP Engwirda | Y Fan | P Kay | MW Kwok | IN Mann
R Ng | ATC Ridgers | PJ Sephton

Anguilla | Bermuda | British Virgin Islands | Cayman Islands
Cyprus | Hong Kong | Jersey | London | Luxembourg
Montevideo | São Paulo | Shanghai | Singapore
www.harneys.com

Yours faithfully

/s/ Harney Westwood & Riegels

Harney Westwood & Riegels

I-MAB

CLAWBACK POLICY

Exhibit 97.1

The Compensation Committee (the “Committee”) of the Board of Directors (the “Board”) of I-Mab (the
“Company”) believes that it is appropriate for the Company to adopt this Clawback Policy (the “Policy”) to be
applied to the Executive Officers of the Company and adopts this Policy to be effective as of the Effective Date.

1. Definitions

For purposes of this Policy, the following definitions shall apply:

a) “Company Group” means the Company and each of its subsidiaries or consolidated affiliated entities,

as applicable.

b) “Covered Compensation” means any Incentive-Based Compensation granted, vested or paid to a
person who served as an Executive Officer at any time during the performance period for the
Incentive-Based Compensation and that was Received (i) on or after October 2, 2023 (the effective
date of the Nasdaq listing standards), (ii) after the person became an Executive Officer, and (iii) at a
time that the Company had a class of securities listed on a national securities exchange or a national
securities association such as Nasdaq.

c) “Effective Date” means December 1, 2023.

d) “Erroneously Awarded Compensation” means the amount of Covered Compensation granted, vested or
paid to a person during the fiscal period when the applicable Financial Reporting Measure relating to
such Covered Compensation was attained that exceeds the amount of Covered Compensation that
otherwise would have been granted, vested or paid to the person had such amount been determined
based on the applicable Restatement, computed without regard to any taxes paid (i.e., on a pre-tax
basis). For Covered Compensation based on stock price or total shareholder return, where the amount
of Erroneously Awarded Compensation is not subject to mathematical recalculation directly from the
information in a Restatement, the Committee will determine the amount of such Covered
Compensation that constitutes Erroneously Awarded Compensation, if any, based on a reasonable
estimate of the effect of the Restatement on the stock price or total shareholder return upon which the
Covered Compensation was granted, vested or paid and the Committee shall maintain documentation
of such determination and provide such documentation to Nasdaq.

e) “Exchange Act” means the U.S. Securities Exchange Act of 1934.

f) “Executive Officer” means the Company’s president, principal financial officer, principal accounting
officer (or if there is no such accounting officer, the controller), any vice-president of the Company in
charge of a principal business unit, division, or function (such as sales, administration, or finance), any
other officer who performs a policy-making function, or any other person (whether or not an officer or
employee of the Company) who performs

similar policy-making functions for the Company. “Policy-making function” does not include policy-
making functions that are not significant. Both current and former Executive Officers are subject to the
Policy in accordance with its terms.

g) “Financial Reporting Measure” means (i) any measure that is determined and presented in accordance

with the accounting principles used in preparing the Company’s financial statements, and any
measures derived wholly or in part from such measures and may consist of IFRS/U.S. GAAP or non-
IFRS/non-U.S. GAAP financial measures (as defined under Regulation G of the Exchange Act and
Item 10 of Regulation S-K under the Exchange Act), (ii) stock price or (iii) total shareholder return.
Financial Reporting Measures need not be presented within the Company’s financial statements or
included in a filing with the SEC.

h) “Home Country” means the Company’s jurisdiction of incorporation, i.e., the Cayman Islands.

i)

j)

“Incentive-Based Compensation” means any compensation that is granted, earned or vested based
wholly or in part upon the attainment of a Financial Reporting Measure.

“Lookback Period” means the three completed fiscal years (plus any transition period of less than nine
months that is within or immediately following the three completed fiscal years and that results from a
change in the Company’s fiscal year) immediately preceding the date on which the Company is
required to prepare a Restatement for a given reporting period, with such date being the earlier of: (i)
the date the Board, a committee of the Board, or the officer or officers of the Company authorized to
take such action if Board action is not required, concludes, or reasonably should have concluded, that
the Company is required to prepare a Restatement, or (ii) the date a court, regulator or other legally
authorized body directs the Company to prepare a Restatement. Recovery of any Erroneously Awarded
Compensation under the Policy is not dependent on whether or when the Restatement is actually filed.

k) “Nasdaq” means the Nasdaq Stock Market.

l)

“Received”: Incentive-Based Compensation is deemed “Received” in the Company’s fiscal period
during which the Financial Reporting Measure specified in or otherwise relating to the Incentive-Based
Compensation award is attained, even if the grant, vesting or payment of the Incentive-Based
Compensation occurs after the end of that period.

m) “Restatement” means a required accounting restatement of any Company financial statement due to the
material noncompliance of the Company with any financial reporting requirement under the securities
laws, including (i) to correct an error in previously issued financial statements that is material to the
previously issued financial statements (commonly referred to as a “Big R” restatement) or (ii) to
correct an error in previously issued financial statements that is not material to the previously issued
financial statements but that would result in a material misstatement if the error were corrected in the
current period or left uncorrected in the current period (commonly referred to as a “little r”
restatement). Changes to the Company’s financial statements that do not represent error corrections
under the then-current relevant accounting standards will not constitute Restatements. Recovery of any

Erroneously Awarded Compensation under the Policy is not dependent on fraud or misconduct by any
person in connection with the Restatement.

n) “SEC” means the U.S. Securities and Exchange Commission.

2. Recovery of Erroneously Awarded Compensation

In the event of a Restatement, any Erroneously Awarded Compensation Received during the Lookback Period

prior to the Restatement (a) that is then-outstanding but has not yet been paid shall be automatically and
immediately forfeited and (b) that has been paid to any person shall be subject to reasonably prompt repayment to
the Company Group in accordance with Section 3 of this Policy. The Committee must pursue (and shall not have
the discretion to waive) the forfeiture and/or repayment of such Erroneously Awarded Compensation in
accordance with Section 3 of this Policy, except as provided below.

Notwithstanding the foregoing, the Committee (or, if the Committee is not a committee of the Board

responsible for the Company’s executive compensation decisions and composed entirely of independent directors,
a majority of the independent directors serving on the Board) may determine not to pursue the forfeiture and/or
recovery of Erroneously Awarded Compensation from any person if the Committee determines that such
forfeiture and/or recovery would be impracticable due to any of the following circumstances: (i) the direct
expense paid to a third party (for example, reasonable legal expenses and consulting fees) to assist in enforcing
the Policy would exceed the amount to be recovered, including the costs that could be incurred if pursuing such
recovery would violate local laws other than the Company’s Home Country laws (following reasonable attempts
by the Company Group to recover such Erroneously Awarded Compensation, the documentation of such attempts,
and the provision of such documentation to Nasdaq), (ii) pursuing such recovery would violate the Company’s
Home Country laws adopted prior to November 28, 2022 (provided that the Company obtains an opinion of Home
Country counsel acceptable to Nasdaq that recovery would result in such a violation and provides such opinion to
Nasdaq), or (iii) recovery would likely cause any otherwise tax-qualified retirement plan, under which benefits are
broadly available to employees of the Company Group, to fail to meet the requirements of 26 U.S.C. 401(a)(13) or
26 U.S.C. 411(a) and regulations thereunder.

3. Means of Repayment

In the event that the Committee determines that any person shall repay any Erroneously Awarded
Compensation, the Committee shall provide written notice to such person by email or certified mail to the
physical address on file with the Company Group for such person, and the person shall satisfy such repayment in a
manner and on such terms as required by the Committee, and the Company Group shall be entitled to set off the
repayment amount against any amount owed to the person by the Company Group, to require the forfeiture of any
award granted by the Company Group to the person, or to take any and all necessary actions to reasonably
promptly recover the repayment amount from the person, in each case, to the fullest extent permitted under
applicable law, including without limitation, Section 409A of the U.S. Internal Revenue Code and the regulations
and guidance thereunder. If the Committee does not specify a repayment timing in the written notice described
above, the applicable person shall be required to repay the Erroneously Awarded Compensation to the Company
Group by wire, cash, cashier’s check or other means as agreed by the Committee no later than thirty (30) days
after receipt of such notice.

4. No Indemnification

No person shall be indemnified, insured or reimbursed by the Company Group in respect of any loss of
compensation by such person in accordance with this Policy, nor shall any person receive any advancement of
expenses for disputes related to any loss of compensation by such person in accordance with this Policy, and no
person shall be paid or reimbursed by the Company Group for any premiums paid by such person for any third-
party insurance policy covering potential recovery obligations under this Policy. For this purpose,
“indemnification” includes any modification to current compensation arrangements or other means that would
amount to de facto indemnification (for example, providing the person a new cash award which would be
cancelled to effect the recovery of any Erroneously Awarded Compensation). In no event shall the Company
Group be required to award any person an additional payment if any Restatement would result in a higher
incentive compensation payment.

5. Miscellaneous

This Policy generally will be administered and interpreted by the Committee, provided that the Board may, 
from time to time, exercise discretion to administer and interpret this Policy, in which case, all references herein to 
“Committee” shall be deemed to refer to the Board.  Any determination by the Committee with respect to this 
Policy shall be final, conclusive and binding on all interested parties.  Any discretionary determinations of the 
Committee under this Policy, if any, need not be uniform with respect to all persons, and may be made selectively 
amongst persons, whether or not such persons are similarly situated.

This Policy is intended to satisfy the requirements of Section 954 of the Dodd-Frank Wall Street Reform and

Consumer Protection Act, as it may be amended from time to time, and any related rules or regulations
promulgated by the SEC or the Nasdaq, including any additional or new requirements that become effective after
the Effective Date which upon effectiveness shall be deemed to automatically amend this Policy to the extent
necessary to comply with such additional or new requirements.

The provisions in this Policy are intended to be applied to the fullest extent of the law.  To the extent that any 
provision of this Policy is found to be unenforceable or invalid under any applicable law, such provision will be 
applied to the maximum extent permitted and shall automatically be deemed amended in a manner consistent with 
its objectives to the extent necessary to conform to applicable law.  The invalidity or unenforceability of any 
provision of this Policy shall not affect the validity or enforceability of any other provision of this Policy.  
Recovery of Erroneously Awarded Compensation under this Policy is not dependent upon the Company Group 
satisfying any conditions in this Policy, including any requirements to provide applicable documentation to the 
Nasdaq.

The rights of the Company Group under this Policy to seek forfeiture or reimbursement are in addition to, and

not in lieu of, any rights of recovery, or remedies or rights other than recovery, that may be available to the
Company Group pursuant to the terms of any law, government regulation or stock exchange listing requirement or
any other policy, code of conduct, employee handbook, employment agreement, equity award agreement, or other
plan or agreement of the Company Group.

6. Amendment and Termination

To the extent permitted by, and in a manner consistent with applicable law, including SEC and Nasdaq rules,

the Committee may terminate, suspend or amend this Policy at any time in its discretion.

7. Successors

This Policy shall be binding and enforceable against all persons and their respective beneficiaries, heirs,

executors, administrators or other legal representatives with respect to any Covered Compensation granted, vested
or paid to or administered by such persons or entities.