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TG Therapeutics

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FY2022 Annual Report · TG Therapeutics
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

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

For the fiscal year ended December 31, 2022.

OR

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

For the transition period from ________ to ________.

Commission File Number 1-32639
TG THERAPEUTICS, INC.
(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of incorporation or organization)

36-3898269
(I.R.S. Employer Identification No.)

3020 Carrington Mill Blvd, Suite 475
Morrisville, North Carolina
(Address of principal executive offices)

27560
(Zip Code)

Registrant’s telephone number, including area code: (212) 554-4484

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

Title of Class
Common Stock, par value $0.001

Trading Symbol(s)
TGTX

Exchange Name
Nasdaq Capital Market

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

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒

Securities registered pursuant to Section 12(g) of the Act:    None

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, smaller reporting company, or an emerging growth company. See the
definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☒
Non-accelerated filer ☐

Accelerated filer ☐
Smaller reporting company ☐
Emerging growth company ☐

If an emerging growth company, 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. ☐

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 whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

The aggregate market value of voting common stock held by non-affiliates of the registrant (assuming, for purposes of this calculation, without conceding, that all executive officers and
directors are “affiliates”) was $564,449,606 as June 30, 2022, based on the closing sale price of such stock as reported on the NASDAQ Capital Market.

There were 146,363,127 shares of the registrant’s common stock, $0.001 par value, outstanding as of February 17, 2023.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant’s Proxy Statement for the 2022 Annual Meeting of Stockholders are incorporated by reference in Part III of this Annual Report on Form 10-K.

Auditor Name: KPMG LLP

Auditor Location: New York, NY

Auditor Firm ID: 185

    
    
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TG THERAPEUTICS, INC.
ANNUAL REPORT ON FORM 10-K
FOR THE FISCAL YEAR ENDED DECEMBER 31, 2022

TABLE OF CONTENTS

SPECIAL CAUTIONARY NOTICE REGARDING FORWARD-LOOKING STATEMENTS
SUMMARY RISK FACTORS

PART I
ITEM 1
ITEM 1A
ITEM 1B
ITEM 2
ITEM 3
ITEM 4

PART II

ITEM 5

ITEM 6
ITEM 7
ITEM 7A
ITEM 8
ITEM 9
ITEM 9A
ITEM 9B

PART III

ITEM 10
ITEM 11
ITEM 12
ITEM 13
ITEM 14

PART IV

Business
Risk Factors
Unresolved Staff Comments
Properties
Legal Proceedings
Mine Safety Disclosures

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity
Securities
Removed and Reserved
Management’s Discussion and Analysis of Financial Condition and Results of Operations
Quantitative and Qualitative Disclosure About Market Risk
Financial Statements and Supplementary Data
Changes in and Disagreements With Accountants on Accounting and Financial Disclosures
Controls and Procedures
Other Information

Directors, Executive Officers and Corporate Governance
Executive Compensation
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
Certain Relationships and Related Transactions, and Director Independence
Principal Accounting Fees and Services

ITEM 15

Exhibits and Financial Statement Schedules

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SPECIAL CAUTIONARY NOTICE REGARDING FORWARD-LOOKING STATEMENTS

Certain  matters  discussed  in  this  report,  including  matters  discussed  under  the  captions  “Business”  and  “Management’s  Discussion  and
Analysis of Financial Condition and Results of Operations,” may constitute forward-looking statements for purposes of the Securities Act of 1933, as
amended, or the Securities Act, and the Securities Exchange Act of 1934, as amended, or the Exchange Act, and involve known and unknown risks,
uncertainties  and  other  factors  that  may  cause  our  actual  results,  performance  or  achievements  to  be  materially  different  from  the  future  results,
performance or achievements expressed or implied by such forward-looking statements. In some cases, you can identify forward-looking statements
by words such as “anticipate,” “believe,” “contemplate,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “predict,”
“project,”  “seek,”  “should,”  “target,”  “will,”  “would”  or  the  negative  of  these  words  or  other  comparable  terminology,  although  not  all  forward-
looking statements contain these identifying words.

All written or oral forward-looking statements attributable to us are expressly qualified in their entirety by these cautionary statements. In
addition, with respect to all of our forward-looking statements, we claim the protection of the safe harbor for forward-looking statements contained
in the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include, but are not limited to, statements about:

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our  ability  to  obtain  regulatory  approvals  for  our  product  candidates,  including  TG-1701  and  TG-1801,  as  well  as  any  other  product
candidates,  and  our  ability  to  maintain  regulatory  approval  of  BRIUMVITM  (ublituximab-xiiy)  in  relapsing  forms  of  multiple  sclerosis
(RMS) in the U.S.;
our ability to adapt and expand our commercial infrastructure to successfully launch, market and sell BRIUMVI and our other product
candidates;
our ability to maintain a reliable supply of our products that meets market demand;
the success of the ongoing commercialization of BRIUMVI or any future products or combinations of products, including the anticipated
rate and degree of market acceptance and pricing and reimbursement;
the initiation, timing, progress and results of our pre-clinical studies and clinical trials;
our ability to advance drug candidates into, and successfully complete, clinical trials;
our  ability  to  establish  and  maintain  contractual  relationships,  on  commercially  reasonable  terms,  with  third  parties  for  manufacturing,
distribution and supply, and a range of other support functions for our clinical development and commercialization efforts;
the implementation of our business model, strategic plans for our business and drug candidates;
the scope of protection we are able to establish and maintain for intellectual property rights covering our product and product candidates;
estimates of our expenses, future revenues, capital requirements and our needs for additional financing;
our ability to maintain and establish collaborations and enter into strategic arrangements, if desired;
our ability to meet any of our financial projections or guidance, including without limitation short and long-term revenue projections or
guidance and changes to the assumptions underlying those projections or guidance;
our ability to obtain sufficient capital to fund our planned operations;
our financial performance and cash burn management; and
developments relating to our competitors and our industry.

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SUMMARY RISK FACTORS

Our  business  is  subject  to  a  number  of  risks  of  which  you  should  be  aware  before  making  an  investment  decision.  The  risks
described  below  are  a  summary  of  the  principal  risks  associated  with  an  investment  in  us  and  are  not  the  only  risks  we  face.  You  should
carefully  consider  these  risks,  the  risk  factors  in  Item  IA,  and  the  other  reports  and  documents  that  we  have  filed  with  the  Securities  and
Exchange Commission (SEC).

Risks Related to Commercialization
● If we are unable to maintain current approval of BRIUMVI, our business will be materially harmed.
● We cannot predict when or if we will obtain regulatory approval to commercialize our product candidates, including TG-1701 and TG-

1801 in B-cell disorders.

● We have limited experience operating as a commercial company, and, as a result, the marketing and sale of BRIUMVI in RMS may be

less successful than anticipated.

● If BRIUMVI or any of our future product candidates (if approved) do not achieve broad market acceptance among physicians, patients,

payors, and the medical community, the revenues that we generate from product sales will be limited.

● If the market opportunities for BRIUMVI and any future products for which we may receive approval, including TG-1701 or TG-1801
in  B-cell  disorders,  are  smaller  than  we  estimate  or  if  any  approval  that  we  obtain  is  based  on  a  narrower  patient  population  or  the
labeling  includes  warnings  or  limitations  that  are  not  acceptable  to  patients  or  healthcare  providers,  our  revenue  will  be  adversely
affected.

● We face substantial competition for treatments for our target indications, which may result in others commercializing drugs before or

more successfully than we do, resulting in the reduction or elimination of our commercial opportunity.

● If we are unable to establish additional commercial capabilities and infrastructure to support a potential launch RMS or B-cell disorders,

or expansion into geographies outside the U.S., we may be unable to generate sufficient revenue to sustain our business.

● Product liability lawsuits could cause us to incur substantial liabilities and limit product commercialization.

Risks Related to our Financial Position and Need for Additional Capital
● We have incurred significant operating losses since our inception and anticipate that we will continue to incur losses for the foreseeable

future.

● We will need to raise substantial additional funding. If we are unable to raise capital when needed, we will be forced to delay, reduce, or

eliminate some of our drug development programs or commercialization efforts.

● Our level of indebtedness and debt service obligations could adversely affect our financial condition and may make it more difficult for

us to fund our operations.

Risks Related to Drug Development and Regulatory Approval
● If we are unable to obtain or maintain regulatory approval for our product and product candidates and ultimately cannot commercialize

one or more of them, or experience significant delays in doing so, our business will be materially harmed.

● Our  product  and  product  candidates  may  cause  undesirable  side  effects  that  could  delay  or  prevent  their  regulatory  approval  or

significantly limit their commercial profile following marketing approval, if any.

● Because results of preclinical studies and early clinical trials are not necessarily predictive of future results, any product candidate we
advance may not have favorable results in later clinical trials. Moreover, interim, “top-line,” and preliminary data from our clinical trials
that we announce or publish may change, or the perceived product profile may be impacted, as more patient data or additional endpoints
are analyzed.

● Any  products  or  product  candidates  we  may  advance  through  clinical  development  are  subject  to  extensive  regulation,  which  can  be

costly and time consuming, cause unanticipated delays, or prevent the receipt of the required approvals.

Risks Related to Governmental Regulation of the Pharmaceutical Industry
● We are subject to extensive regulation, including new legislative and regulatory proposals, that may increase our compliance costs and

adversely affect our ability to market our products, obtain collaborators and raise capital.

● If we fail to comply with various healthcare laws and regulations, we may incur losses or be subject to liability.
● If we fail to comply with regulatory requirements, any product for which we obtain marketing approval could be subject to restrictions or

withdrawal from the market and we may be subject to penalties.

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Risks Related to our Dependence on Third Parties
● If the third parties on which we rely to conduct our clinical trials and generate clinical, preclinical, and other data necessary to support
our  regulatory  applications  do  not  perform  their  services  as  required,  we  may  not  be  able  to  obtain  regulatory  approval  for  or
commercialize our product or product candidates when expected or at all.

● Our reliance on third parties for commercial and clinical supply of our product and product candidates increases the risk that we will not
have  sufficient  quantities  of  our  product  or  product  candidates  or  such  quantities  at  an  acceptable  cost  or  quality,  which  could  delay,
prevent or impair our development or commercialization efforts.

● Because  we  have  in-licensed  our  product  and  product  candidates  from  third  parties,  any  dispute  with  or  non-performance  by  our

licensors will adversely affect our ability to develop and commercialize the applicable product.

Risks Related to Intellectual Property
● Our success depends upon our ability to obtain and protect our intellectual property, and if the scope of our patent protection obtained is
not  sufficiently  broad,  our  competitors  could  develop  and  commercialize  products  similar  or  identical  to  ours,  and  our  ability  to
successfully commercialize our products may be impaired.

● Our patent protection could be reduced or eliminated for non-compliance with various procedural and other requirements imposed by

governmental patent agencies.

● We may need to license certain intellectual property from third parties, and such licenses may not be available or may not be available on

commercially reasonable terms.

● If we or our partners are sued for infringing intellectual property rights of third parties, it will be costly and time consuming to defend

against such lawsuits, and an unfavorable outcome in any such lawsuit would have a material adverse effect on our business.

● If we are unable to protect the confidentiality of our trade secrets, our business may be significantly harmed.

Risks Related to COVID-19
● Public health issues, and specifically the pandemic caused by COVID-19, could have an adverse impact on our financial condition and

results of operations and other aspects of our business.

● Patients  and  healthcare  providers  have  raised  concerns  that  immunosuppressive  products,  like  anti-CD20  antibodies  and  other  B-cell
targeted agents, may increase the risk of acquiring COVID-19 or lead to more severe complications upon infection. These concerns may
impact the commercial potential for BRIUMVI and other immunosuppressive products that we have in development.

General Risk Factors
● We will need to develop and expand our business, and we may encounter difficulties in managing this development and expansion.
● Our ability to continue our clinical development and commercialization activities will depend on our ability to attract and maintain key

management and other personnel.

● Certain of our executive officers, directors and other stockholders own more than 5% of our outstanding common stock and may be able

to influence our management and the outcome of matters submitted to shareholders for approval.

● Certain anti-takeover provisions in our charter documents and Delaware law could make a third-party acquisition more difficult, which

could limit the price investors might be willing to pay for our common stock.

● Our stock price is, and we expect it to remain, volatile, which could limit investors’ ability to sell stock at a profit and could subject us to

securities and shareholder derivative litigation.

The foregoing is only a summary of some of our risks. These and other risks are discussed more fully in the section entitled “Risk

Factors” in Part II, Item IA and elsewhere in this Annual Report on Form 10-K (our Risk Factors).

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PART I

Unless  the  context  requires  otherwise,  references  in  this  report  to  “TG,”  “Company,”  “we,”  “us”  and  “our”  refer  to  TG
Therapeutics,  Inc.  and  our  subsidiaries.  Our  name,  logo  and  BRIUMVI  are  trademarks  or  tradenames  of  TG  Therapeutics,  Inc.  All  other
trademarks, service marks or other tradenames appearing in this Annual Report on Form 10-K are the property of their respective owners.

ITEM 1. BUSINESS.

OVERVIEW

TG Therapeutics is a fully-integrated, commercial stage, biopharmaceutical company focused on the acquisition, development and
commercialization of novel treatments for B-cell diseases. In addition to a research pipeline including several investigational medicines, TG
has  received  approval  from  the  U.S.  Food  and  Drug  Administration  (FDA)  for  BRIUMVI™  (ublituximab-xiiy)  for  the  treatment  of  adult
patients  with  relapsing  forms  of  multiple  sclerosis  (RMS),  to  include  clinically  isolated  syndrome,  relapsing-remitting  disease,  and  active
secondary  progressive  disease,  in  adults.  We  also  actively  evaluate  complementary  products,  technologies  and  companies  for  in-licensing,
partnership, acquisition and/or investment opportunities.

Business Updates

FDA Approval and U.S. Launch of BRIUMVI

On  December  28,  2022,  we  announced  that  the  FDA  granted  approval  of  ublituximab,  now  referred  to  as  BRIUMVI,  for  the
treatment of RMS, to include clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults.
BRIUMVI is an anti-CD20 monoclonal antibody approved for patients with RMS that can be administered in a one-hour infusion following
the  starting  dose. Approval  was  granted  for  this  indication  based  on  data  from  the  ULTIMATE  I  &  II  Phase  3  trials,  which  demonstrated
superiority  over  teriflunomide  in  significantly  reducing  the  annualized  relapse  rate  (ARR,  the  primary  endpoint),  the  number  of  T1  Gd-
enhancing  lesions  and  the  number  of  new  or  enlarging  T2  lesions.  Results  from  the  ULTIMATE  I  &  II  trials  were  recently  published  in
August 2022 in The New England Journal of Medicine.

On January 26, 2023, we announced the commercial launch of BRIUMVI, making it available to physicians and patients. We are
committed to helping patients access BRIUMVI through the BRIUMVI Patient Support Program, which we launched following the approval,
additional information can be found at www.briumvi.com.

UNITY-CLL Phase 3 Trial & Withdrawal of the BLA/sNDA Submission for U2 to Treat Patients with CLL/SLL and Withdrawal of
UKONIQ® (umbralisib) from Sale 

On February 5, 2021, we announced that the FDA granted accelerated approval of umbralisib, the Company’s PI3K delta inhibitor,
then commercially referred to as UKONIQ, for the treatment of adult patients with relapsed or refractory Marginal Zone Lymphoma (MZL)
who have received at least one prior anti-CD20 based regimen and adult patients with relapsed or refractory Follicular Lymphoma (FL) who
have received at least three prior lines of systemic therapy.

To  further  expand  the  use  of  UKONIQ  and  to  obtain  the  approval  of  ublituximab,  our  anti-CD20  monoclonal  antibody  under
development, we conducted the UNITY-CLL study, a global, Phase 3, randomized, controlled clinical trial, that compared the combination of
ublituximab, and UKONIQ, (combination referred to as U2), to an active control arm of obinutuzumab plus chlorambucil in patients with
both treatment-naïve and relapsed or refractory chronic lymphocytic leukemia (CLL). The trial met its primary endpoint, and based on those
results, a Biologics License Application (BLA) and supplemental New Drug Application (sNDA) were submitted to the U.S. Food and Drug
Administration (FDA) for U2 to treat patients with CLL/small lymphocytic lymphoma (SLL). 

In November 2021, we received notification from the FDA that it planned to host an Oncologic Drug Advisory Committee (ODAC)
meeting  in  connection  with  its  review  of  the  pending  BLA/sNDA  and  to  discuss  the  benefit  risk  of  UKONIQ  in  its  approved  indications.
While the FDA identified a number of concerns, the FDA’s desire to host an ODAC appeared to stem from an early ad hoc analysis of overall
survival (OS) from the UNITY-CLL trial.

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On  April  15,  2022,  based  on  newly  updated  OS  data  from  the  UNITY-CLL  study,  which  showed  a  negative  survival  benefit,  we

decided to withdraw the pending BLA/sNDA for U2 to treat CLL/SLL.

On April 15, 2022, we also announced the voluntary withdrawal of UKONIQ from sale for its approved indications. Our decision to
withdraw UKONIQ from sale was primarily based on the withdrawal of the BLA and sNDA for U2 in CLL.  On June 1, 2022, the FDA
withdrew its approval of UKONIQ.

As  a  result  of  these  withdrawals,  we  closed  or  are  in  the  process  of  closing  all  studies  related  to  umbralisib  +/-  ublituximab  in

oncology.

CORPORATE INFORMATION

We were incorporated in Delaware in 1993. Our executive offices are located at 3020 Carrington Mill Blvd, Suite 475, Morrisville,

North Carolina, 27560. Our telephone number is 1-877-575-TGTX(8489), and our e-mail address is info@tgtxinc.com.

We  maintain  a  website  with  the  address  www.tgtherapeutics.com  and  maintain  various  social  media  accounts,  including  but  not
limited  to  Twitter  and  LinkedIn.  We  also  maintain  websites  related  to  BRIUMVI,  including  but  not  limited  to  www.BRIUMVI.com,  and
www.BRIUMVIPATIENTSUPPORT.com. We make available free of charge through our corporate website our annual reports on Form 10-K,
quarterly  reports  on  Form  10-Q  and  current  reports  on  Form  8-K,  as  well  as  any  amendments  to  these  reports,  as  soon  as  reasonably
practicable after we electronically file such material with, or furnish such material to, the SEC. We are not including the information on our
website or our social media accounts as a part of, nor incorporating either by reference into, this report. The SEC maintains a website that
contains annual, quarterly, and current reports, proxy statements, and other information that issuers (including us) file electronically with the
SEC. The SEC’s website address is http://www.sec.gov.

In  addition,  we  intend  to  use  our  corporate  website,  SEC  filings,  press  releases,  public  conference  calls  and  webcasts  as  well  as
social media to communicate with our subscribers and the public. It is possible that the information we post on social media could be deemed
to be material information. Therefore, in light of the SEC’s guidance, we encourage investors, the media and others interested in us to review
the information we post on the U.S. social media channels listed on our website.

 STRATEGY

As a fully-integrated, commercial stage biopharmaceutical company focused on the acquisition, development and commercialization

of novel treatments for B cell diseases, our key corporate objectives include:

● Successfully commercializing BRIUMVI in the U.S. for relapsing forms of multiple sclerosis;
● Building  upon  the  BRIUMVI  approval  to  evaluate  other  uses  for  BRIUMVI  in  additional  MS  indications  and/or  other

autoimmune diseases;

● Continuing to expand our pipeline with mechanisms of importance to B-cell mediated diseases;
● Evaluating potential strategic collaborations to maximize the value of our programs and B-cell directed platform; and
● Maintaining our “patient first” culture as we grow our business.

Our Approach and Platform

Our  approach  to  drug  development  is  centered  on  developing  therapies  for  b  cell  diseases.  Our  process  begins  by  identifying
validated targets against B-cell diseases, and then searching for and, ideally, acquiring what we believe to be “best-in-class” compounds with
complementary mechanisms against these targets.

Our  preference  is  to  identify  targets  for  which  there  is  human  clinical  proof  of  concept  that  the  mechanism  is  active  in  B-cell
diseases  and  then  to  identify  drug  candidates  that  effectively  modulate  the  desired  molecular  target.  We  identify  these  drug  candidates  at
academic centers of excellence or in development at biotech companies or pharmaceutical companies globally. Our current drug candidates
were  acquired  through  license  agreements,  collaborations,  or  joint  ventures  with  biopharmaceutical  companies  located  globally.  This
approach enables us to minimize target risk while looking for the best available drug candidates around the world. By focusing on B-cell
diseases and targets with a known activity profile, we believe that we can quickly identify the patients most likely to respond, resulting in a
more efficient development path with the potential for a greater likelihood of success.

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Our approach is enabled by our clinical development platform which includes an internal team with a deep understanding of B-cell

diseases and significant experience successfully obtaining FDA approval for innovative treatments for these complex diseases.

AUTOIMMUNE DISEASE OVERVIEW

An  autoimmune  disease  occurs  when  the  body’s  immune  system  attacks  and  destroys  healthy  body  tissue  by  mistake.    There  are
currently  more  than  80  types  of  autoimmune  disorders  that  have  been  identified.  Some  of  these  diseases  may  result  from  inappropriate
production of antibodies from the B-cells. These antibodies cannot discriminate “self” from “non-self,” and inadvertently mount a disabling
immune response against normal organs. Examples of common and very debilitating autoimmune disorders for which abnormally functioning
B-cells have been implicated include MS and rheumatoid arthritis (RA). 

 The Company’s current focus is on MS.

Multiple Sclerosis Overview

RMS is a chronic demyelinating disease of the central nervous system (CNS) and includes people with relapsing-remitting multiple
sclerosis (RRMS) and people with secondary progressive multiple sclerosis (SPMS) who continue to experience relapses. RRMS is the most
common form of MS and is characterized by episodes of new or worsening signs or symptoms (relapses) followed by periods of recovery.
MS is the most prevalent chronic inflammatory disease of the CNS. It is estimated that nearly 1 million people are living with MS in the
United States and over 2.3 million people world-wide are living with MS.

OUR PRODUCTS

We currently license worldwide development and commercial rights, subject to certain limited geographical restrictions, for all of
our products under development. The following table summarizes the current clinical trial status for our lead drug candidates as of February
2023. 

Clinical Drug Candidate: 
(molecular target)

Initial Target Disease

Stage of Development
(trial name)

Ublituximab (anti-CD20 mAb)

Relapsing Forms of Multiple Sclerosis (RMS) APPROVED

TG-1701 (BTK inhibitor)

B-cell disorders

TG-1801 (anti-CD47/CD19 bispecific mAb)

B-cell disorders

Phase 1 trial

Phase 1 trial

 BRIUMVI (ublituximab-xiiy) Overview

BRIUMVI is the first and only anti-CD20 monoclonal antibody approved for the treatment of RMS, to include clinically isolated
syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults, that can be administered in a one-hour infusion
following the starting dose.

Late-Stage Clinical Development of Ublituximab-xiiy

ULTIMATE I & II Trials Evaluating Single Agent Ublituximab in RMS: ULTIMATE I and ULTIMATE II are two independent Phase 3
trials.  Each  trial  is  a  global,  randomized,  multi-center,  double-blinded,  double-dummy,  active-controlled  study  evaluating  the  efficacy  and
safety/tolerability  of  ublituximab-xiiy  (450mg  dose  administered  by  one  hour  intravenous  infusion  every  six  months,  following  a  Day  1
infusion of 150mg over four hours, and a Day 15 infusion of 450mg over one hour) to teriflunomide (14mg oral tablets taken once daily) in
subjects with RMS. The primary endpoint for each study was ARR following 96 weeks of treatment. This program was led by Lawrence
Steinman, MD, George A. Zimmermann Professor and Professor of Pediatrics, Neurology and Neurological Sciences at Stanford University.

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In December 2020, we announced positive topline results from the ULTIMATE I & II trials. Both studies met their primary endpoint
of significantly reducing ARR over a 96-week period (p<0.005 in each study) with ublituximab-xiiy demonstrating an ARR of <0.10 in each
of  the  studies.  Relative  reductions  of  approximately  60%  and  50%  in  ARR  over  teriflunomide  were  observed  in  ULTIMATE  I  &  II,
respectively.  Key secondary MRI endpoints were also met.

On August 22, 2022, the full results from the ULTIMATE I & II trials were published in the New England Journal of Medicine.        

Commercialization of BRIUMVI (ublituximab-xiiy)

On  December  28,  2022,  we  announced  the  FDA  approval  of  BRIUMVI  (ublituximab-xiiy)  for  the  treatment  of  RMS,  to  include
clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults, primarily based on results from
the ULTIMATE I & II Phase 3 trials, and on January 26, 2023, we announced the U.S. commercial launch of BRIUMVI, making it available
to physicians and patients.

A  marketing  authorization  application  (MAA)  has  been  submitted  to  the  European  Medicines  Agency  (EMA)  for  ublituximab  to

treat adult patients with relapsing forms of MS. We expect a decision to be made on this application in the second half of 2023.

  We  will  continue  to  evaluate  options  for  commercialization  outside  the  U.S.,  either  alone  or  with  a  partner,  that  maximizes  the

potential return on investment.

TG-1701 (BTK inhibitor) Overview

TG-1701 is a novel, orally available and covalently-bound Bruton’s tyrosine kinase (BTK) inhibitor that exhibits strong selectivity

to BTK in in vitro kinase screening.

B-cell receptor (BCR) signaling is crucial for normal B-cell development and supports the survival and growth of malignant B-cells
in  patients  with  B-cell  leukemias  or  lymphomas.  Targeting  BTK,  an  essential  element  of  BCR  signaling  pathway  which  regulates  the
survival, activation, proliferation, and differentiation of B lymphocytes, has shown remarkable efficacy with an acceptable safety profile in B-
cell malignancies.

We are currently evaluating TG-1701 in a Phase 1, multi-center, dose-escalation clinical trial in patients with B-cell malignancies.
 Key secondary objectives include evaluation of pharmacokinetics (PK), pharmacodynamics, and preliminary anticancer activity. Data from
this trial was presented at the 2021 American Society of Hematology (ASH) annual meeting.

TG-1801 (anti-CD47/anti-CD19 bispecific monoclonal antibody) Overview

TG-1801 is a first-in-class, bispecific CD47 and CD19 antibody. It is the first therapy to target both CD19, a B-cell specific market
widely expressed across B-cell malignancies, and CD47, the "don’t eat me" signal used by both healthy and tumor cells to evade macrophage
mediated phagocytosis. CD47 is expressed ubiquitously on normal cells, including red blood cells and platelets. CD19  is  a  specific  B-cell
marker, expressed early during pre-B cell ontogeny and until terminal differentiation into early plasma cells. The majority of B-cell lineage
malignancies (more than 90%) express CD19, including NHL, CLL and acute lymphoblastic leukemia (ALL). Tumor B-cells that have lost
the  expression  of  CD20  after  anti-CD20  mAb  therapy,  have  been  found  to  maintain  the  expression  of  CD19,  making  CD19  an  attractive
target in the treatment of B cell malignancies.

In the first quarter of 2019, we commenced a Phase 1 first-in-human, dose-escalation study of TG-1801. This study is evaluating
escalating doses of TG-1801 in patients with B-Cell lymphoma. The primary objective of the study is to determine the recommended Phase 2
dose and to characterize the safety profile of TG-1801. Key secondary objectives are to evaluate the pharmacokinetics of TG-1801 and its
preliminary  anticancer  activity.    In  December  2022,  preliminary  results  from  this  first-in-human  Phase  1  study  were  presented  at  the  64th
American Society of Hematology (ASH) Annual Meeting & Exposition.  TG-1801 was well tolerated as monotherapy and in combination
with ublituximab with no MTD identified and exhibited preliminary signs of efficacy in a variety of relapsed or refractory B-cell lymphomas.

In  the  first  half  of  2021,  we  commenced  a  second  Phase  1  study  of  TG-1801  in  the  US  to  continue  dose  optimization  as

monotherapy and in combination with ublituximab. Enrollment in this study is ongoing.

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INTELLECTUAL PROPERTY AND PATENTS

General

Our  goal  is  to  obtain,  maintain  and  enforce  patent  protection  for  our  products,  formulations,  processes,  methods  and  other
proprietary  technologies,  preserve  our  trade  secrets,  and  operate  without  infringing  on  the  proprietary  rights  of  other  parties,  both  in  the
United States and in other countries. Our policy is to actively seek to obtain, where appropriate, the broadest intellectual property protection
possible for our product candidates, proprietary information and proprietary technology through a combination of contractual arrangements
and patents, both in the U.S. and elsewhere in the world.

We also depend upon the skills, knowledge and experience of our scientific and technical personnel, as well as that of our advisors,
consultants and other contractors. This knowledge, trade secrets, proprietary information and experience we call “know-how.” To help protect
our proprietary know-how, which is not patentable, and for inventions for which patents may be difficult to enforce, we rely on trade secret
protection and confidentiality agreements to protect our interests. To this end, we seek to protect our proprietary technology and processes, in
part,  by  entering  into  confidentiality  agreements  with  our  collaborators,  scientific  advisors,  employees  and  consultants,  and  invention
assignment  agreements  with  our  employees  and  consultants.  There  can  be  no  assurance,  however,  that  we  can  prevent  unauthorized
disclosure or use of our trade secrets, know-how and proprietary information despite the existence of confidentiality agreements.

Patents  and  other  proprietary  rights  are  crucial  to  the  development  of  our  business.  We  will  be  able  to  protect  our  proprietary
technologies from unauthorized use by third parties only to the extent that our proprietary rights are covered by valid and enforceable patents,
supported by regulatory exclusivity or are effectively maintained as trade secrets. We have a number of issued patents and pending patent
applications related to our compounds and other technology, but we cannot guarantee the scope of protection of the issued patents, or that
such patents will survive a validity or enforceability challenge, or that any of the pending patent applications will issue as patents.

Generally,  patent  applications  in  the  U.S.  are  maintained  in  secrecy  for  a  period  of  18  months  or  more.  Since  publication  of
discoveries  in  the  scientific  or  patent  literature  often  lags  behind  actual  discoveries,  we  are  not  certain  that  we  were  the  first  to  make  the
inventions covered by each of our issued patents and pending patent applications or that we were the first to file patent applications covering
such inventions. The patent positions of biotechnology and pharmaceutical companies are highly uncertain and involve complex legal and
factual questions. To date, there has been no consistent policy regarding the breadth of claims allowed in biotechnology patents. Therefore,
we  cannot  predict  the  breadth  of  claims  that  may  be  ultimately  allowed  from  our  pending  patent  applications,  cannot  predict  whether  the
claims in our issued patents will be invalidated or modified through the district courts, Patent Trial and Appeal Board (PTAB) proceedings, or
reexamination  proceedings  at  the  United  States  Patent  and  Trademark  Office  (USPTO),  and  thus  cannot  predict  the  enforceability  of  the
claims in our issued patents or the claims that may ultimately issue from our pending patent applications. Third parties or competitors may
challenge or circumvent our patents or patent applications, if issued. If our competitors prepare and file patent applications in the U.S. that
claim technology also claimed by us in a pending patent application or issued patent, we may have to participate in interference proceedings
to  determine  priority  of  invention,  which  could  result  in  substantial  cost,  even  if  the  eventual  outcome  is  favorable  to  us.  Because  of  the
extensive time required for development, testing and regulatory review of a potential product, it is possible that before we commercialize any
of our products, any related patent may expire or remain in existence for only a short period following commercialization, thus reducing any
advantage of the patent. However, the life of a patent covering a product that has been subject to regulatory approval may have the ability to
be extended through the patent restoration program, although any such extension could still be minimal. If a patent is issued to a third party
containing one or more preclusive or conflicting claims, and those claims are ultimately determined to be valid and enforceable, we may be
required to obtain a license under such patent or to develop or obtain alternative technology. In the event of litigation involving a third-party
claim, an adverse outcome in the litigation could subject us to significant liabilities to such third party, require us to seek a license for the
disputed rights from such third party, and/or require us to cease use of the technology. Further, our breach of an existing license or failure to
obtain  a  license  to  technology  required  to  commercialize  our  products  may  seriously  harm  our  business.  We  also  may  need  to  commence
litigation to enforce any patents issued to us or to determine the scope and validity of third-party proprietary rights. Litigation would involve
substantial costs.

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We, or those companies from which we have licensed our drug candidates, file patent applications directed to our drug candidates in
an effort to establish intellectual property positions regarding these new chemical entities as well as uses of these new chemical entities in the
treatment  of  diseases.  We  also  file  patent  applications  directed  to  novel  combinations  of  our  drugs  together  and  with  drugs  developed  by
others. The intellectual property portfolios for our most advanced drug candidates as of February 2022 are summarized below. Each of these
portfolios contains one or more pending patent applications covering our products and product candidates and uses and combinations thereof.
For those patents, prosecution is in progress. Prosecution is a lengthy process, during which the scope of the claims initially submitted for
examination by the USPTO is often significantly narrowed by the time they issue, if they issue at all. This may be the case with respect to our
pending patent applications referred to below.

BRIUMVI (ublituximab-xiiy)

Pursuant  to  our  license  for  ublituximab  with  LFB  Biotechnologies,  GTC  Biotherapeutics,  and  LFB/GTC  LLC,  we  have  the
exclusive commercial rights to a series of patents and patent applications in the U.S. and in multiple countries around the world, as well as a
non-exclusive  license  to  additional  background  patent  rights.  These  patents  and  patent  applications  include  composition  of  matter  patents
relating  to  the  structure  and  mechanism  of  action  for  ublituximab,  as  well  as  method  of  use  patents  which  cover  use  of  ublituximab  in
combination with various agents and for various therapeutic indications.

The composition of matter patent for ublituximab has been issued in the U.S., Europe and other jurisdictions, including Australia,
Canada, China, Japan, Korea, and India. The expected expiration for the composition of matter patent is 2029 in the U.S. and 2025 in Europe
and other non-US jurisdictions, exclusive of patent term extensions, which could result in later expiration dates. We also have a method of
use patent on the combination of UKONIQ and ublituximab, which has been issued in the U.S., Europe, and other jurisdictions, including
Australia,  China,  Korea,  and  Japan,  and  is  pending  in  other  territories.  The  expected  expiration  of  the  method  of  use  patent  for  the
combination of UKONIQ and ublituximab is 2033. In the U.S., the Biologics Price Competition and Innovation Act provides that BRIUMVI
is eligible for 12 years of market exclusivity from the date of BRIUMVI’s U.S. approval. During this 12 year period a biosimilar product that
references our BRIUMVI product, cannot be approved.

TG-1701 (BTK inhibitor)

Pursuant to our license agreement with Jiangsu Hengrui Medicine Co. (Hengrui), we have the exclusive commercial rights in the
treatment  of  hematologic  cancers  to  a  patent  family  which  covers  the  composition  of  matter  and  proposed  methods  of  use  for  various
therapeutic indications in the U.S. and certain other countries. Patents directed to the compound have granted in the U.S., Europe, and other
jurisdictions, including Australia, Canada, Japan, China, and Korea and are expected to expire no sooner than October 2034. Applications are
pending in other jurisdictions.

TG-1801 (anti-CD47/anti-CD19 bispecific antibody)

Pursuant to our joint venture and license option agreement with Novimmune SA (Novimmune), we maintain an exclusive option,
exercisable at specific times during development, to license the commercial rights to a series of global patent applications and patents, and the
non-exclusive  right  to  certain  technology  patent  applications.  Patents  directed  to  a  bispecific  antibody  have  issued  in  Australia,  China,
Europe, Japan, and Russia and are pending in other jurisdictions including the U.S. Any patents maturing from these pending applications are
expected to expire no sooner than December 2033.

Limitations on Patent Rights and Trade Secrets

The patent rights that we own or have licensed relating to our product candidates are limited in ways that may affect our ability to
exclude third parties from competing against us if we obtain regulatory approval to market these product candidates. See “Item 1A – Risk
Factors -- Risks Related to the Company’s Intellectual Property.” In addition, the limited patent protection may adversely affect the value of
our products or product candidates and may inhibit our ability to obtain a corporate partner at terms acceptable to us, if at all.

Proof  of  direct  infringement  by  a  competitor  for  method  of  use  patents  can  prove  difficult  because  the  competitors  making  and
marketing a product typically do not engage in the patented use. Additionally, proof that a competitor contributes to or induces infringement
of a patented method of use by another can also prove difficult because an off-label use of a product could prohibit a finding of contributory
infringement, and inducement of infringement requires proof of intent by the competitor.

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Moreover, physicians may prescribe such a competitive identical product for indications other than the one for which the product has
been approved, or off-label indications, that are covered by the applicable patents. Although such off-label prescriptions may directly infringe
or contribute to or induce infringement of method of use patents, such infringement is difficult to prevent or prosecute.

U.S. Patent Term Restoration and Marketing Exclusivity

Depending upon the timing, duration and specifics of any FDA approval of our drug candidates, some of our U.S. patents may be
eligible for limited patent term extension under the Drug Price Competition and Patent Term Restoration Act of 1984, commonly referred to
as the Hatch-Waxman Act. The Hatch-Waxman Act permits a patent restoration term of up to five years as compensation for patent term lost
during product development and the FDA regulatory review process. However, patent term restoration cannot extend the remaining term of a
patent beyond a total of 14 years from the product’s approval date. The patent term restoration period is generally one-half the time between
the effective date of an Investigational New Drug (IND) application and the submission date of a New Drug Application (NDA) or BLA plus
the time between the submission date of an NDA or BLA and the approval of that application. Only one patent applicable to an approved
drug is eligible for the extension and the application for the extension must be submitted prior to the expiration of the patent, and within 60
days of a product’s approval. The USPTO, in consultation with the FDA, reviews and approves the application for any patent term extension
or restoration.

Also, under the Hatch-Waxman Act, drugs that are new chemical entities (NCEs) are eligible for a five-year period of marketing
exclusivity  in  the  United  States.  During  the  exclusivity  period,  the  FDA  may  not  accept  for  review  an  abbreviated  new  drug  application
(ANDA) or a 505(b)(2) NDA submitted by another company for another drug based on the same active moiety, regardless of whether the
drug is intended for the same indication as the original innovator drug or for another indication, where the applicant does not own or have a
legal  right  of  reference  to  all  the  data  required  for  approval.  However,  an  application  may  be  submitted  after  four  years  if  it  contains  a
certification  of  patent  invalidity  or  non-infringement  to  one  of  the  patents  listed  with  the  FDA  by  the  innovator  NDA  holder.  The  Hatch-
Waxman Act also provides three years of marketing exclusivity for a drug product that contains an active moiety that has been previously
approved, if new clinical investigations, other than bioavailability studies, that were conducted or sponsored by the applicant are deemed by
the FDA to be essential to the approval of the application, for example new indications, dosages or strengths of an existing drug. This three-
year exclusivity covers only the modification for which the drug received approval on the basis of the new clinical investigations. During this
period, FDA will not approve an application filed by a third party for the protected conditions of use that relies on any of the data from the
new clinical investigations that was submitted by the innovator company. Five-year and three-year exclusivity will not delay the submission
or approval of a full NDA that does not rely on the innovator company’s data.

The Biologics Price Competition and Innovation Act of 2009 2009 (BPCIA) created an abbreviated pathway for companies to bring
biologic  drugs  to  market  that  are  biosimilar  to  previously  approved  branded  reference  products  by  relying  on  clinical  studies  that  were
performed by the reference product sponsor. The BPCIA also created a 12-year period of data exclusivity for innovator biologics, whereby
the FDA cannot approve a biological license application (BLA) for a biosimilar product relying on data for a specific reference product until
12 years after the reference product is first licensed. BLA supplements are not eligible for any additional exclusivity. The objectives of the
BPCIA are conceptually similar to those of the Hatch-Waxman Act described above. The implementation of an abbreviated approval pathway
for biosimilar products is under the direction of the FDA. Since the enactment of the BPCIA, the FDA has issued guidance on biosimilars,
addressing scientific, quality and procedural issues relevant to an abbreviated application for a biosimilar product. As of December 2022, the
FDA had approved 40 biosimilar products.

Pediatric exclusivity, if granted, adds six months to existing exclusivity periods and patent terms. This six-month exclusivity, which
runs  from  the  end  of  other  exclusivity  protection  or  patent  term,  may  be  granted  based  on  the  voluntary  completion  of  a  pediatric  trial  in
accordance with an FDA-issued “Written Request” for such a trial.

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LICENSING AGREEMENTS AND COLLABORATIONS

We  have  formed  strategic  alliances  with  a  number  of  companies  for  the  manufacture  and  commercialization  of  our  products.  Our

current key strategic alliances are discussed below.

BRIUMVI (ublituximab-xiiy)

LFB Biotechnologies S.A.S, GTC Biotherapeutics, LFB/GTC LLC.

In January 2012, we entered into an exclusive license agreement with LFB Biotechnologies, GTC Biotherapeutics and LFB/GTC
LLC,  all  wholly-owned  subsidiaries  of  LFB  Group,  relating  to  the  development  of  ublituximab  (the  LFB  License  Agreement).  Under  the
terms of the LFB License Agreement, we have acquired the exclusive worldwide rights (exclusive of France/Belgium) for the development
and  commercialization  of  ublituximab.  As  of  December  31,  2022,  we  have  incurred  expenses  of  approximately  $25.0  million  related  to
milestones in accordance with the terms of the LFB License Agreement, $12.0 million of which was incurred in December of 2022 related to
a milestone associated with receiving approval of BRIUMVI by the FDA. LFB Group is eligible to receive future payments of approximately
$6.0 million, upon our successful achievement of certain regulatory milestones, in addition to royalty payments on net sales of ublituximab at
a royalty rate in the high-single digits. The license will terminate on a country-by-country basis upon the expiration of the last licensed patent
right  or  15  years  after  the  first  commercial  sale  of  a  product  in  such  country,  unless  the  agreement  is  earlier  terminated  (i)  by  LFB  if  the
Company challenges any of the licensed patent rights, (ii) by either party due to a breach of the agreement, or (iii) by either party in the event
of the insolvency of the other party.

Ildong Pharmaceutical Co. Ltd.(Ildong)

In November 2012, we entered into an exclusive (within the territory) sublicense agreement with Ildong relating to the development
and  commercialization  of  ublituximab  in  South  Korea  and  Southeast  Asia.  Under  the  terms  of  the  sublicense  agreement,  Ildong  has  been
granted a royalty bearing, exclusive right, including the right to grant sublicenses, to develop and commercialize ublituximab in South Korea,
Taiwan, Singapore, Indonesia, Malaysia, Thailand, Philippines, Vietnam, and Myanmar. To date, we have received $2 million in the form of
an  upfront  payment  from  Ildong  and  are  eligible  to  receive  sales-based  milestone  payments  up  to  an  aggregate  of  $5  million  and  royalty
payments  on  net  sales  of  ublituximab  at  a  royalty  rate  that  escalates  from  mid-teens  to  high-teens  upon  approval  in  South  Korea  and/or
Southeast Asia. The license will terminate on a country by country basis upon the expiration of the last licensed patent right or 15 years after
the first commercial sale of a product in such country, unless the agreement is earlier terminated (i) by Ildong if the Company challenges any
of the licensed patent rights, (ii) by either party due to a breach of the agreement, or (iii) by either party in the event of the insolvency of the
other party.

TG-1701 (BTK inhibitor)

In  January  2018,  we  entered  into  a  global  exclusive  license  agreement  with  Jiangsu  Hengrui,  to  acquire  worldwide  intellectual
property rights, excluding Asia but including Japan, and for the research, development, manufacturing, and commercialization of products
containing or comprising of any of Hengrui’s Bruton’s Tyrosine Kinase inhibitors containing the compounds of either TG 1701 (SHR1459 or
EBI1459) or TG1702 (SHR1266 or EBI1266). Hengrui is eligible to receive milestone payments totaling approximately $350 million upon
and subject to the achievement of certain milestones. Various provisions allow for payments in conjunction with the agreement to be made in
cash  or  our  common  stock,  while  others  limit  the  form  of  payment.  In  July  2020,  we  paid  Hengrui  $2.0  million  as  part  of  a  milestone  in
accordance with the license agreement. Royalty payments in the low double digits are due on net sales of licensed products and revenue from
sublicenses. Additionally, before we can license, sell, develop, or commercialize ublituximab within China, we must notify Hengrui, giving
Hengrui the right of first offer. The agreement allows combinations of TG-1701 or TG-1702 with umbralisib, ublituximab, or U2. Additional
combinations may be undertaken under the agreement subject to additional pre-specified payments to Hengrui.

The term of the agreement expires after the expiration of the last royalty term to expire with respect to any of the patent rights under
the  agreement.  We  or  Hengrui  may  terminate  the  agreement  upon  notice  to  the  other  upon  breach  without  remedy  or  upon  insolvency.  In
addition, either party may terminate the agreement upon a material breach, after providing the other party with adequate notice and allowing
45 days to cure.

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TG-1801 (anti-CD47/anti-CD19 bispecific antibody)

In June 2018, we entered into a Joint Venture and License Option Agreement with Novimmune to collaborate on the development
and  commercialization  of  Novimmune’s  novel  first-in-class  anti-CD47/anti-CD19  bispecific  antibody  known  as  TG  1801  (previously  NI
1701).  The  companies  will  jointly  develop  the  product  on  a  worldwide  basis,  focusing  on  indications  in  the  area  of  hematologic  B-cell
malignancies.  We  serve  as  the  primary  responsible  party  for  the  development,  manufacturing  and  commercialization  of  the  product.
Milestone  payments  will  be  paid  based  on  early  clinical  development,  and  the  Company  will  be  responsible  for  the  costs  of  clinical
development  of  the  product  through  the  end  of  the  Phase  2  clinical  trials,  after  which  the  Company  and  Novimmune  will  be  jointly
responsible  for  all  development  and  commercialization  costs.  The  Company  and  Novimmune  will  each  maintain  an  exclusive  option,
exercisable at specific times during development, for the Company to license the rights to TG 1801, in which case Novimmune is eligible to
receive additional milestone payments totaling approximately $185 million as well as tiered royalties on net sales in the high single to low
double digits upon and subject to the achievement of certain milestones.

UKONIQ (umbralisib)

In  September  2014,  we  exercised  our  option  to  license  the  global  rights  to  umbralisib,  thereby  entering  into  an  exclusive  licensing
agreement (the Umbralisib License) with Rhizen Pharmaceuticals, S A (Rhizen) for the development and commercialization of umbralisib.
Rhizen  is  eligible  to  receive  approval  and  sales-based  milestone  payments  in  the  aggregate  of  approximately  $175  million  payable.
Additionally, Rhizen receives tiered royalties that escalate from high single digits to low double digits on any net sales of umbralisib. The
license will terminate on a country-by-country basis upon the expiration of the last licensed patent right or any other exclusivity right in such
country, unless the agreement is earlier terminated (i) by us for any reason, or (ii) by either party due to a breach of the agreement.

Cosibelimab

In  March  2015,  we  entered  into  a  global  collaboration  (the  Collaboration  Agreement)  with  Checkpoint  Therapeutics,  Inc.
(Checkpoint) for the development and commercialization of Checkpoint’s anti-PD-L1 and anti-GITR antibody research programs in the field
of  hematological  malignancies  with  an  option  to  acquire  rights  in  autoimmune  diseases.  Under  the  terms  of  the  agreement,  we  will  make
development and sales-based milestone payments up to an aggregate of approximately $110 million and will pay a tiered low double-digit
royalty on net sales. The royalty term will terminate on a country by country basis upon the later of (i) ten years after the first commercial
sale  of  any  applicable  licensed  product  in  such  country,  or  (ii)  the  expiration  of  the  last-to-expire  patent  containing  a  valid  claim  to  any
licensed product in such country.

COMPETITION

Competition in the pharmaceutical and biotechnology industries is intense. Our competitors include pharmaceutical companies and
biotechnology  companies,  as  well  as  universities  and  public  and  private  research  institutions.  In  addition,  companies  that  are  active  in
different  but  related  fields  represent  substantial  competition  for  us.  Many  of  our  competitors  have  significantly  greater  capital  resources,
larger research and development staffs and facilities and greater experience in drug development, regulation, manufacturing and marketing
than we do. These organizations also compete with us to recruit qualified personnel, attract partners for joint ventures or other collaborations,
and license technologies that are competitive with ours. To compete successfully in this industry, we must identify novel and unique drugs or
methods of treatment and then complete the development of those drugs as treatments in advance of our competitors.

The drugs that we are attempting to develop will have to compete with existing therapies. In addition, a large number of companies
are pursuing the development of pharmaceuticals that target the same diseases and conditions that we are targeting. Some of these potential
competing drugs are further advanced in development than our drug candidates and may be commercialized earlier. The resulting changes in
standard of care can impact the likelihood of regulatory accelerated approval opportunities for our drug candidates.

For BRIUMVI, there are a number of established therapies with which we will compete:

● We expect BRIUMVI will primarily compete against other iv CD20-targeted agents, while the group of CD20-targeted agents will 
also compete broadly against a number of already approved MS therapies. Currently, there is one other approved intravenously 
delivered anti-CD20 monoclonal antibody ocrelizumab (Roche Holdings AG).  In addition, while we believe not directly 
competitive, there is also a subcutaneous anti-CD20 monoclonal antibody approved for MS, ofatumumab (Novartis AG).

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TG-1701  and  TG-1801  if  approved  will  also  face  competition  from  drugs  on  the  market  and  under  development  in  the  same

therapeutic class as each of those drugs.

Additional information can be found under Item “1A - Risk Factors – Other Risks Related to Our Business” within this report.

SUPPLY AND MANUFACTURING

We  have  limited  experience  in  manufacturing  products  for  clinical  or  commercial  purposes.  We  currently  do  not  have  any
manufacturing capabilities of our own. We have established a contract manufacturing relationship for the commercial supply of BRIUMVI
with Samsung Biologics. As with any supply program, obtaining materials of sufficient quality and quantity to meet the requirements of the
market  demand  for  BRIUMVI  and  our  ublituximab  development  programs  cannot  be  guaranteed  and  we  cannot  ensure  that  we  will  be
successful in this endeavor.

To  the  extent  possible  and  commercially  practicable,  we  plan  to  develop  back-up  strategies  for  raw  materials,  manufacturing  and
testing services for our commercial products. Given the long lead times and cost of establishing additional commercial manufacturing sites
we  expect  that  we  will  rely  on  single  contract  manufacturers  to  produce  our  commercial  products  under  current  Good  Manufacturing
Practice,  or  cGMP,  regulations  for  many  years.  Our  commercial  manufacturing  partners  have  a  limited  number  of  facilities  in  which  our
product  candidates  can  be  produced  and  will  have  limited  experience  in  manufacturing  our  product  candidates  in  quantities  sufficient  for
commercialization.  Our  third-party  manufacturers  will  have  other  clients  and  may  have  other  priorities  that  could  affect  their  ability  to
perform the work satisfactorily and/or on a timely basis. Both of these occurrences would be beyond our control.

We expect to similarly rely on contract manufacturing relationships for any products that we may in-license or acquire in the future.

However, there can be no assurance that we will be able to successfully contract with such manufacturers on terms acceptable to us, or at all.

Contract  manufacturers  are  subject  to  ongoing  periodic  and  unannounced  inspections  by  the  FDA,  the  Drug  Enforcement
Administration if applicable, and corresponding state agencies to ensure strict compliance with cGMP and other state and federal regulations.
Where  manufactured  products  are  globally  registered,  similar  regulatory  inspection  burdens  are  applicable  from  each  and  every  marketed
territory.  If  our  manufacturing  partners  are  inspected  and  deemed  out  of  compliance  with  cGMPs,  product  recalls  could  result,  inventory
could be destroyed, production could be stopped, and supplies could be delayed or otherwise disrupted.

If we need to change manufacturers after commercialization, the FDA and corresponding foreign regulatory agencies may need to
approve  these  new  manufacturers  in  advance,  which  will  involve  testing,  regulatory  submissions,  and  additional  inspections  to  ensure
compliance with FDA regulations and standards and may require significant lead times and delay. Furthermore, switching manufacturers may
be  difficult  because  the  number  of  potential  manufacturers  is  limited.  It  may  be  difficult  or  impossible  for  us  to  find  a  replacement
manufacturer quickly or on terms acceptable to us, or at all.

GOVERNMENT AND INDUSTRY REGULATION

Numerous  governmental  authorities,  principally  the  FDA  and  corresponding  state  and  foreign  regulatory  agencies,  impose
substantial regulations upon the clinical development, manufacture and marketing of our product candidates, as well as our ongoing research
and  development  activities.  We,  along  with  our  third-party  contractors,  will  be  required  to  navigate  the  various  pre-  and  post-approval
requirements  of  the  governing  regulatory  agencies  of  the  jurisdictions  in  which  we  wish  to  conduct  clinical  studies  or  market  our  product
candidates.  None  of  our  product  candidates,  except  BRIUMVI,  are  approved  for  sale  in  any  market  in  which  we  have  marketing  rights.
Before  marketing  in  the  U.S.,  any  drug  that  we  develop  must  undergo  rigorous  pre-clinical  testing  and  clinical  trials  and  an  extensive
regulatory review and approval process implemented by the FDA under the FDCA and, in the case of biologics, the Public Health Service
Act. The FDA regulates, among other things, the pre-clinical and clinical testing, safety, efficacy, approval, manufacturing, quality control
and assurance, record keeping, pharmacovigilance and adverse event reporting, packaging, labeling, storage, advertising, promotion, import
and  export,  sale  and  distribution  of  biopharmaceutical  products.  The  process  of  obtaining  regulatory  approvals  and  the  subsequent
compliance with applicable federal, state, local and foreign statutes and regulations require the expenditure of substantial time and financial
resources.

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Product Development and Applications for Marketing Authorization

The regulatory review and approval process is lengthy, expensive, and uncertain. We are required to submit extensive pre-clinical
and clinical data and supporting information to the FDA for each indication or use to establish a drug candidate’s safety and efficacy before
we  can  secure  FDA  approval  to  market  or  sell  a  product  in  the  U.S.  The  approval  process  takes  many  years,  requires  the  expenditure  of
substantial resources, and may involve ongoing requirements for post-marketing studies or surveillance. Before commencing clinical trials in
humans,  we  must  submit  an  IND  to  the  FDA  containing,  among  other  things,  pre-clinical  data,  chemistry,  manufacturing  and  control
information, and an investigative plan. Our submission of an IND may not result in FDA authorization to commence a clinical trial.

For purposes of clinical development and to pursue NDA or BLA approval, clinical trials are typically conducted in the following

sequential phases:

● Phase 1: The drug is administered to a small group of humans, either healthy volunteers or patients, to test for safety, dosage

tolerance, absorption, metabolism, excretion, and clinical pharmacology.

● Phase 2: Studies are conducted on more patients to assess the product's efficacy, to ascertain dose tolerance and the optimal dose

range, and to gather additional data relating to safety and potential adverse events.

● Phase 3: Studies establish safety and efficacy in an expanded patient population.
● Phase 4: The FDA may require Phase 4 post-marketing studies to find out more about the drug’s long-term risks, benefits, and

optimal use, or to test the drug in different populations.

Clinical testing must meet requirements for institutional review board oversight, informed consent and good clinical practices, and
must  be  conducted  pursuant  to  an  IND,  unless  exempted.  In  addition,  the  FDA,  equivalent  foreign  regulatory  authority,  or  a  data  safety
monitoring  committee  for  a  trial  may  place  a  clinical  trial  on  hold  or  terminate  it  if  it  concludes  that  subjects  are  being  exposed  to  an
unacceptable health risk, or for futility. Any drug is likely to produce some toxicity or undesirable side effects in animals and in humans when
administered at sufficiently high doses and/or for a sufficiently long period of time. Unacceptable toxicity or side effects may occur at any
dose level at any time in studies in animals designed to identify unacceptable effects of a drug candidate, known as toxicological studies, or
clinical  trials  of  drug  candidates.  The  appearance  of  any  unacceptable  toxicity  or  side  effect  could  cause  us  or  regulatory  authorities  to
interrupt, limit, delay or abort the development of any of our drug candidates and could ultimately prevent approval by the FDA or foreign
regulatory authorities for any or all targeted indications.

The  length  of  time  necessary  to  complete  clinical  trials  varies  significantly  and  may  be  difficult  to  predict.  Clinical  results  are
frequently susceptible to varying interpretations that may delay, limit or prevent regulatory approvals. Additional factors that can cause delay
or termination of our clinical trials, or that may increase the costs of these trials, include:

● slow patient enrollment due to the nature of the clinical trial plan, the proximity of patients to clinical sites, the eligibility criteria for

participation in the study or other factors;

● inadequately trained or insufficient personnel at the study site to assist in overseeing and monitoring clinical trials or delays in

approvals from a study site’s review board;

● longer treatment time required to demonstrate efficacy or determine the appropriate product dose;
● insufficient supply of the drug candidates;
● adverse medical events or side effects in treated patients; and
● ineffectiveness of the drug candidates.

For clinical trials that are intended to form the basis of a new drug or biologics license application for approval, sponsors of drugs
may apply for an SPA from the FDA, by which the FDA provides official evaluation and written guidance on the design and size of proposed
protocols.  While  obtaining  an  SPA  provides  some  assurance  the  design  of  a  trial  should  be  sufficient  for  approval,  the  final  marketing
approval depends on the results of efficacy, the adverse event profile and an evaluation of the benefit/risk of treatment demonstrated in the
Phase  3  trial.  The  SPA  agreement  may  only  be  changed  through  a  written  agreement  between  the  sponsor  and  the  FDA,  or  if  the  FDA
becomes aware of a substantial scientific issue essential to product safety or efficacy.

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The FDA may permit expedited development, evaluation, and marketing of new therapies intended to treat persons with serious or
life-threatening conditions for which there is an unmet medical need under its expedited drug development programs. A sponsor can apply for
Fast Track designation at the time of submission of an IND, or at any time prior to receiving marketing approval of the new drug application,
or NDA. To receive Fast Track designation, an applicant must demonstrate:

● that the drug is intended to treat a serious or life-threatening condition; and
● that nonclinical or clinical data demonstrate the potential to address an unmet medical need.

The FDA must respond to a request for Fast Track designation within 60 calendar days of receipt of the request. Over the course of
drug development, a product in a Fast Track development program must continue to meet the criteria for Fast Track designation. Sponsors of
products  in  Fast  Track  drug  development  programs  must  be  in  regular  contact  with  the  reviewing  division  of  the  FDA  to  ensure  that  the
evidence necessary to support marketing approval will be developed and presented in a format conducive to an efficient review. Sponsors of
products in Fast Track drug development programs are also permitted to submit portions of an NDA or BLA to the FDA on a rolling basis
where the FDA may consider reviewing portions of a marketing application before the sponsor submits the complete application.

In addition, sponsors may also apply to the FDA for Breakthrough Therapy Designation (BTD). The procedures and requirements
for BTD are similar to those required for Fast Track such that the Breakthrough Therapy Designation is intended to expedite the development
and review of a potential new drug for serious or life-threatening diseases, however, with BTD, there is a further requirement that the sponsor
present “preliminary clinical evidence” which “indicates that the drug may demonstrate substantial improvement over existing therapies on
one or more clinically significant endpoints, such as substantial treatment effects observed early in clinical development.” The designation of
a drug as a Breakthrough Therapy was enacted as part of the 2012 Food and Drug Administration Safety and Innovation Act.

Sponsors  of  drugs  granted  Fast  Track  or  breakthrough  therapy  designation  also  may  seek  approval  under  the  FDA’s  accelerated
approval regulations. Under this authority, the FDA may grant marketing approval for a new drug product on the basis of adequate and well-
controlled  clinical  trials  establishing  that  the  drug  product  has  an  effect  on  a  surrogate  endpoint  that  is  reasonably  likely,  based  on
epidemiologic, therapeutic, pathophysiologic, or other evidence, to predict clinical benefit or on the basis of an effect on a clinical endpoint
other than survival or irreversible morbidity. To obtain accelerated approval a sponsor must be able to demonstrate the drug candidate treats a
serious condition, provides a meaningful advantage over other available therapies, and demonstrates an effect on a surrogate endpoint that is
reasonably likely to predict clinical benefit. Many companies have filed for accelerated approval and have subsequently failed to obtain such
approval  for  a  variety  of  reasons.  To  the  extent  a  product  does  obtain  an  accelerated  approval,  such  approval  will  be  subject  to  the
requirement that the applicant study the drug further in a post-marketing confirmatory clinical trial to verify and describe its clinical benefit
where  there  is  uncertainty  as  to  the  relation  of  the  surrogate  endpoint  to  clinical  benefit  or  uncertainty  as  to  the  relation  of  the  observed
clinical  benefit  to  ultimate  outcome.  Accelerated  approval  is  sometimes  referred  to  as  conditional  approval  because  if  the  results  of  these
confirmatory clinical trials fail to verify clinical benefit, the FDA has the right to remove the drug from the market and has done so in the
recent  past.  Post-marketing  confirmation  studies  are  usually  underway  at  the  time  an  applicant  files  the  NDA.  When  required  to  be
conducted, such post-marketing confirmation studies must also be adequate and well-controlled. The applicant must carry out any such post-
marketing  confirmation  studies  with  due  diligence.  Completing  the  required  post-approval  clinical  studies  as  designed  can  be  difficult,
especially as the treatment landscape evolves.

It  is  also  becoming  more  common  for  the  FDA  to  request  a  Risk  Evaluation  and  Mitigation  Strategy,  or  REMS,  as  part  of  an
NDA/BLA. The REMS plan contains post-market obligations of the sponsor to train prescribing physicians, monitor off-label drug use, and
conduct Phase 4 follow-up studies and registries to ensure the continued safe use of the drug.

The NDA and BLA review process also generally includes a pre-approval inspection, or PAI, to assess the manufacturing facilities
and  relevant  processes  and  data  for  compliance,  and  readiness  for  commercial  manufacture  in  accordance  with  cGMPs.  Among  the
conditions of approval is the requirement that a manufacturer’s quality systems and manufacturing procedures conform to cGMP. Even when
product approval is received, manufacturers must expend significant time, money and effort to ensure continued compliance, and the FDA
conducts periodic surveillance inspections to monitor the manufacturing process and drug quality and evaluate whether the manufacturers are
in compliance. It may be difficult for our manufacturers or us to comply with the applicable cGMP, as interpreted by the FDA, and other FDA
regulatory requirements. If we, or our contract manufacturers, fail to comply, then the FDA may not allow us to market products that have
been  affected  by  the  failure.  Many  drug  approvals  have  been  delayed  due  to  issues  at  contract  manufacturing  facilities.  If  we  were  to
experience  any  such  delay  that  would  negatively  impact  our  business  and  timeline  to  commercialization  of  any  of  our  drug  candidates
affected by such manufacturing issue.

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Post-Approval Requirements

Any  products  for  which  we  receive  FDA  approval  are  subject  to  continuing  regulation  by  the  FDA  and  other  federal  and  state
regulators on a wide range of matters, including, among other things cGMPs and product quality, pharmacovigilance and reporting of adverse
events, product distribution requirements, fulfilling post-marketing or confirmatory study or REMS commitments, and complying with FDA
promotion  and  advertising  requirements.  Violations  of  the  FDCA  or  other  post-approval  regulatory  requirements  may  result  in  agency
enforcement actions, including withdrawal of approval, recall, seizure of products, warning letters, injunctions, fines and/or civil or criminal
penalties. Any agency enforcement action could have a material adverse effect on our business.

The FDA promotion and advertising requirements applicable to marketed products include, among other things, standards for direct-
to-consumer  advertising,  restrictions  against  promoting  products  for  uses  or  in  patient  populations  that  are  not  either  described  in  the
product’s approved indications and uses or otherwise consistent with the FDA-approved product labeling, limitations on industry-sponsored
scientific  and  educational  activities,  rules  regarding  communication  of  health  care  economic  information  regarding  biopharmaceutical
products to payors and formularies, and requirements for promotional activities involving the internet. Drugs whose review was accelerated
may carry additional requirements on marketing activities, including the requirement that all promotional materials are pre-submitted to the
FDA.

After  product  approval,  quality  control  and  manufacturing  procedures  must  continue  to  conform  to  applicable  manufacturing
requirements. FDA regulations require among other things, quality control and quality assurance as well as the corresponding maintenance of
records  and  documentation  and  the  obligation  to  investigate  and  correct  any  deviations  from  cGMPs.  Manufacturers  and  other  entities
involved in the manufacture and distribution of approved products are required to register their establishments and list their products with the
FDA and certain state agencies. Manufacturers and their third-party contractors may be subject to periodic unannounced inspections by the
FDA  and  certain  state  agencies  for  assessment  of  compliance  with  cGMPs  and  other  applicable  laws.  Accordingly,  manufacturers  must
continue  to  expend  time,  money,  and  effort  in  the  areas  of  production  and  quality  control  to  maintain  quality  control  and  manufacturing
compliance.  Discovery  of  problems  with  a  product  after  approval  may  result  in  restrictions  on  a  product,  including,  among  other  things,
withdrawal of approval, recall or withdrawal of the product from the market. In addition, changes to the manufacturing process are strictly
regulated, and depending on the significance of the change, may require prior FDA approval or notification before being implemented. Other
types of changes to the approved product, such as adding new indications and claims to the product labeling, are also subject to further FDA
review and approval.

Marketed products must meet the requirements of the Drug Supply Chain Security Act, or DSCSA, which regulates the commercial
distribution  of  prescription  drug  products  at  the  federal  level.  The  DSCSA  sets  certain  standards  for  federal  or  state  registration,  requires
tracing  of  products  through  the  pharmaceutical  distribution  supply  chain,  and  imposes  other  requirements  on  entities  in  the  supply  chain,
including manufacturers and repackagers, wholesale distributors, third-party logistics providers, and dispensers. The DSCSA requirements,
development of standards, and the system for product tracing have been and will continue to be phased in per the DSCSA implementation
timeline established by the FDA.

In  addition,  the  post-marketing  discovery  of  previously  unknown  problems  with  a  product  or  the  failure  to  comply  with  applicable
FDA requirements can have negative consequences, including adverse publicity, judicial or administrative enforcement, warning letters from
the FDA, mandated corrective advertising or communications with doctors, and civil or criminal penalties, among others. Newly discovered
or developed safety or effectiveness data may require changes to a product’s approved labeling, including the addition of new warnings and
contraindications, and may require the implementation of other risk management measures.

From time to time, legislation is drafted, introduced and passed in Congress that could significantly change the statutory provisions
governing the approval, manufacturing and marketing of products regulated by the FDA. In addition to new legislation, FDA regulations,
guidance documents, and policies are often revised or reinterpreted by the agency in ways that may significantly affect our business. It is
impossible to predict whether further legislative or FDA regulation or policy changes will be enacted or implemented and what the impact of
such changes, if any, may be.

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Should  we  wish  to  market  our  products  outside  the  U.S.,  we  must  receive  marketing  authorization  from  the  appropriate  foreign
regulatory  authorities.  The  requirements  governing  the  conduct  of  clinical  trials,  marketing  authorization,  pricing  and  reimbursement  vary
widely from country to country. Importantly, the level of evidence of efficacy and safety necessary to apply for marketing authorization for a
drug candidate differs from country to country. In particular, clinical trial endpoints, and the level of clinical evidence that may support, for
example, an accelerated approval filing with the FDA, may be insufficient to file for marketing applications outside of the U.S. At present,
companies  are  typically  required  to  apply  for  foreign  marketing  authorizations  at  a  national  level.  However,  within  the  European  Union,
centralized  registration  procedures  are  available  to  companies  wishing  to  market  a  product  across  the  European  Union  member  states.
Typically,  if  the  regulatory  authority  is  satisfied  that  a  company  has  presented  adequate  evidence  of  safety,  quality  and  efficacy,  then  the
regulatory  authority  will  grant  a  marketing  authorization.  This  foreign  regulatory  approval  process,  however,  involves  risks  similar  or
identical to the risks associated with FDA approval discussed above, and therefore we cannot guarantee that we will be able to obtain the
appropriate marketing authorization for any product in any particular country.

Failure to comply with applicable federal, state and foreign laws and regulations would likely have a material adverse effect on our
business. In addition, federal, state and foreign laws and regulations regarding the manufacture and sale of new drugs are subject to future
changes. We cannot predict the likelihood, nature, effect or extent of adverse governmental regulation that might arise from future legislative
or administrative action, either in the U.S. or abroad.

Coverage and Reimbursement

Sales of our drugs will depend, in part, on the extent to which our drugs will be covered by third-party payors, such as government
health  programs,  commercial  insurance  and  managed  healthcare  organizations.  These  third-party  payors  are  increasingly  reducing
reimbursements for medical drugs and services. In addition, the containment of healthcare costs has become a priority of foreign and U.S.
federal and state governments, and the prices of drugs have been a focus in this effort. The U.S. government, state legislatures and foreign
governments  have  shown  significant  interest  in  implementing  cost-containment  programs,  including  price  controls,  restrictions  on
reimbursement, importation, and requirements for substitution of generic drugs. Adoption of price controls and cost-containment measures,
and adoption of more restrictive policies in jurisdictions with existing controls and measures, could further limit our net revenue and results.
Decreases  in  third-party  reimbursement  for  our  drug  candidates,  if  approved,  or  a  decision  by  a  third-party  payor  to  not  cover  our  drug
candidates could reduce physician usage of such drugs and have a material adverse effect on our sales, results of operations and financial
condition.

In the U.S., the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act of
2010,  or  collectively  the  Affordable  Care  Act,  enacted  in  March  2010,  has  had  a  significant  impact  on  the  health  care  industry.  The
Affordable  Care  Act  expanded  coverage  for  the  uninsured  while  at  the  same  time  containing  overall  healthcare  costs.  With  regard  to
pharmaceutical  products,  the  Affordable  Care  Act,  among  other  things,  created  a  new  average  manufacturer  price  definition  under  the
Medicaid Drug Rebate Program for drugs that are inhaled, infused, instilled, implanted or injected and not generally dispensed through the
retail channel, increased the minimum Medicaid rebates owed by manufacturers under the Medicaid Drug Rebate Program and extended the
rebate program to individuals enrolled in Medicaid managed care organizations, established annual fees and taxes on manufacturers of certain
branded  prescription  drugs,  and  a  new  Medicare  Part  D  coverage  gap  discount  program,  in  which  manufacturers  must  agree  to  offer  50%
point-of-sale discounts off negotiated prices of applicable brand drugs to eligible beneficiaries during their coverage gap period (subsequent
legislation increased this to 70% effective as of January 1, 2019), as a condition for the manufacturer’s outpatient drugs to be covered under
Medicare Part D.

Since  the  enactment  of  the  Affordable  Care  Act,  certain  provisions  of  the  Affordable  Care  Act  have  been  subject  to  judicial
challenges as well as efforts to repeal or replace them or to alter their interpretation or implementation. For example, the Tax Cuts and Jobs
Act  enacted  on  December  22,  2017,  eliminated  the  shared  responsibility  payment  for  individuals  who  fail  to  maintain  minimum  essential
coverage under section 5000A of the Internal Revenue Code of 1986, commonly referred to as the individual mandate, effective January 1,
2019. Although litigation and legislation over the Affordable Care Act are likely to continue, with unpredictable and uncertain results, we
expect that the Biden administration may seek to expand and strengthen the Affordable Care Act.

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On August 16, 2022, President Biden signed into law the Inflation Reduction Act of 2022 (the Act), which, among other provisions,
included several measures intended to lower the cost of prescription drugs and related healthcare reforms. Specifically, the Act authorizes and
directs the Department of Health and Human Services (the DHHS) to set drug price caps for certain high-cost Medicare Part B and Part D
qualified drugs, with the initial list of drugs to be selected by September 1, 2023, and the first year of maximum price applicability to begin in
2026. The Act further authorizes the DHHS to penalize pharmaceutical manufacturers that increase the price of certain Medicare Part B and
Part D drugs faster than the rate of inflation. Finally, the Act creates significant changes to the Medicare Part D benefit design by capping
Part D beneficiaries’ annual out-of-pocket spending at $2,000 beginning in 2025. We cannot be sure whether additional or related legislation
or rulemaking will be issued or enacted, or what impact, if any, such changes will have on the profitability of any of our drug candidates, if
approved for commercial use, in the future.

At  the  state  level,  individual  states  are  increasingly  aggressive  in  passing  legislation  and  implementing  regulations  designed  to
control prescription drug pricing, including price and marketing cost disclosure and transparency measures, and, in some cases, authorizing
importation of prescription drugs from other countries. In addition, regional health care 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
health care programs. These measures could reduce the ultimate demand for our products or put pressure on our product pricing. We expect
that additional state healthcare reform measures will be adopted in the future, which could limit the amounts that state governments will pay
for healthcare products and services and result in additional pricing pressures.

In  addition,  in  some  foreign  countries,  the  proposed  pricing  for  a  prescription  drug  must  be  approved  before  the  drug  may  be
lawfully marketed. The requirements governing drug pricing vary widely from country to country. For example, the United Kingdom and
many  European  Union  member  states  have  robust  health  technology  assessment  processes  to  determine  pricing  and  reimbursement  for
pharmaceuticals through their national health insurance system. Many European Union members states also include either direct or indirect
price referencing, or other price control mechanisms, in determining the price of a pharmaceutical in their market. There can be no assurance
that  any  country  that  has  price  controls  or  reimbursement  limitations  for  pharmaceutical  drugs  will  allow  favorable  reimbursement  and
pricing arrangements for any of our products. Historically, drugs launched in the European Union do not follow price structures of the U.S.
and generally tend to be significantly lower.

Other U.S. Healthcare Laws

We may also be subject to healthcare regulation and enforcement by the federal government and the states and foreign governments
where we may market our product candidates, if approved. These laws include, without limitation: state and federal anti-kickback, fraud and
abuse,  false  claims,  privacy  and  security  laws;  laws  governing  interactions  with  healthcare  professionals  and  related  transparency
requirements (such as the federal Sunshine Act and a range of state biopharmaceutical marketing and transparency laws); and requirements
for  manufacturers  to  report  certain  calculated  product  prices  to  the  government  or  provide  certain  discounts  or  rebates  to  government
authorities  or  private  entities,  often  as  a  condition  of  reimbursement  under  government  healthcare  programs.  The  compliance  and
enforcement  landscape  is  informed  by  government  enforcement  precedent  and  settlement  history,  Advisory  Opinions,  and  Special  Fraud
Alerts. The risks we face and our approach to compliance may evolve over time in light of these types of developments. The potential safe
harbors available for, example, relative to the Anti-Kickback Statute, are subject to change through legislative and regulatory action, and we
may decide to adjust our business practices or be subject to heightened scrutiny as a result.

The  federal  Anti-Kickback  Statute  prohibits,  among  other  things,  any  person  from  knowingly  and  willfully  offering,  soliciting,
receiving or paying remuneration, directly or indirectly, to induce either the referral of an individual, for an item or service or the purchasing
or ordering of a good or service, for which payment may be made under federal healthcare programs such as the Medicare and Medicaid
programs. The government has enforced the Anti-Kickback Statute to reach large settlements with healthcare companies based on research,
consulting  and  other  financial  arrangements  with  physicians  that  the  government  alleged  were  not  based  on  the  provision  of  bona  fide
services and were intended as an inducement or reward. A person or entity does not need to have actual knowledge of the statute or specific
intent to violate it in order to have committed a violation. In addition, the government may assert that a claim including items or services
resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the federal False Claims
Act.  The  majority  of  states  also  have  anti-kickback  laws,  which  establish  similar  prohibitions  and  in  some  cases  may  apply  to  items  or
services reimbursed by any third-party payor, including commercial insurers.

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In addition, the civil False Claims Act prohibits, among other things, knowingly presenting or causing the presentation of a false,
fictitious  or  fraudulent  claim  for  payment  to  the  U.S.  government.  Actions  under  the  False  Claims  Act  may  be  brought  by  the  Attorney
General or as a qui tam action by a private individual in the name of the government. Violations of the False Claims Act can result in very
significant monetary penalties and treble damages. The federal government is using the False Claims Act, and the accompanying threat of
significant liability, in its investigation and prosecution of pharmaceutical and biotechnology companies throughout the U.S., for example, in
connection with the promotion of products for unapproved uses and other sales and marketing practices. The government has obtained multi-
million  and  multi-billion  dollar  settlements  under  the  False  Claims  Act  in  addition  to  individual  criminal  convictions  under  applicable
criminal  statutes.  Given  the  significant  size  of  actual  and  potential  settlements,  it  is  expected  that  the  government  will  continue  to  devote
substantial resources to investigating healthcare providers’ and manufacturers’ compliance with applicable fraud and abuse laws.

The federal Health Insurance Portability and Accountability Act of 1996, (HIPAA), also created new federal criminal statutes that
prohibit  among  other  actions,  knowingly  and  willfully  executing,  or  attempting  to  execute,  a  scheme  to  defraud  any  healthcare  benefit
program, including private third-party payors, knowingly and willfully embezzling or stealing from a healthcare benefit program, willfully
obstructing a criminal investigation of a healthcare offense, and knowingly and willfully falsifying, concealing or covering up a material fact
or making any materially false, fictitious or fraudulent statement in connection with the delivery of or payment for healthcare benefits, items
or services. Similar to the federal Anti-Kickback Statute, a person or entity does not need to have actual knowledge of the statute or specific
intent to violate it in order to have committed a violation.

There has also been a recent trend of increased federal and state regulation of payments made to physicians and other healthcare
providers. The Affordable Care Act, among other things, imposes reporting requirements on drug manufacturers for payments made by them
to physicians and teaching hospitals, as well as ownership and investment interests held by physicians and their immediate family members.
Failure  to  submit  required  information  may  result  in  civil  monetary  penalties  of  up  to  an  aggregate  of  $150,000  per  year  (or  up  to  an
aggregate of $1 million per year for “knowing failures”), for all payments, transfers of value or ownership or investment interests that are not
timely, accurately and completely reported in an annual submission. Drug manufacturers are required to submit annual reports to the Centers
for Medicare & Medicaid Services, which publicly posts the data on its website. Effective January 1, 2022, these reporting obligations extend
to include transfers of value made to certain non-physician providers such as physician assistants and nurse practitioners. Certain states also
mandate implementation of compliance programs, impose restrictions on drug manufacturer marketing practices and/or require the tracking
and reporting of gifts, compensation and other remuneration to physicians.

We may also be subject to data privacy and security regulation by both the federal government and the states in which we conduct
our  business.  HIPAA,  as  amended  by  the  Health  Information  Technology  and  Clinical  Health  Act,  (HITECH),  and  their  respective
implementing  regulations,  including  the  final  omnibus  rule  published  on  January  25,  2013,  imposes  specified  requirements  relating  to  the
privacy, security and transmission of individually identifiable health information. Among other things, HITECH makes HIPAA’s privacy and
security standards directly applicable to “business associates,” defined as independent contractors or agents of covered entities that create,
receive,  maintain  or  transmit  protected  health  information  in  connection  with  providing  a  service  for  or  on  behalf  of  a  covered  entity.
HITECH also increased the civil and criminal penalties that may be imposed against covered entities, business associates and possibly other
persons, and gave state attorneys general new authority to file civil actions for damages or injunctions in federal courts to enforce the federal
HIPAA laws and seek attorney’s fees and costs associated with pursuing federal civil actions. In addition, according to the U.S. Federal Trade
Commission, (FTC), failing to take appropriate steps to keep consumers' personal information secure constitutes unfair acts or practices in or
affecting commerce in violation of Section 5(a) of the Federal Trade Commission Act. The FTC expects a company's data security measures
to  be  reasonable  and  appropriate  in  light  of  the  sensitivity  and  volume  of  consumer  information  it  holds,  the  size  and  complexity  of  its
business, and the cost of available tools to improve security and reduce vulnerabilities. Medical data is considered sensitive data that merits
stronger  safeguards.  The  FTC's  guidance  for  appropriately  securing  consumers'  personal  information  is  similar  to  what  is  required  under
HIPAA.

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In addition, we may be subject to state law equivalents of each of the above federal laws, such as anti-kickback and false claims laws
which  may  apply  to  items  or  services  reimbursed  by  any  third-party  payor,  including  commercial  insurers,  and  state  laws  governing  the
privacy  and  security  of  health  information  in  certain  circumstances,  many  of  which  differ  from  each  other  in  significant  ways,  thus
complicating compliance efforts. For example, the California Consumer Protection Act, (CCPA), which went into effect on January 1, 2020,
established a privacy framework for covered businesses by creating an expanded definition of personal information, data privacy rights for
consumers  in  California,  and  a  potentially  severe  statutory  damages  framework  for  violations  of  the  CCPA  and  for  businesses  that  fail  to
implement reasonable security procedures and practices to prevent data breaches. The CCPA was recently amended by the California Privacy
Rights Act (CPRA), expanding certain consumer rights such as the right to know. It remains unclear what, if any, additional modifications
will be made to these laws by the California legislature or how these laws will be interpreted and enforced. The potential effects of the CCPA
and CPRA are significant and may cause us to incur substantial costs and expenses to comply.

Rest of the World Healthcare Regulation

For  other  countries  outside  of  the  U.S.  and  the  European  Union,  the  requirements  governing  the  conduct  of  clinical  trials,  drug
licensing,  sales  and  marketing,  pricing  and  reimbursement  vary  from  country  to  country.  If  we  fail  to  comply  with  applicable  foreign
regulatory requirements, we may be subject to, among other things, fines, suspension or withdrawal of regulatory approvals, product recalls,
seizure of products, operating restrictions and criminal prosecution.

European Union member states, the United Kingdom, Switzerland, and other foreign jurisdictions have adopted data protection laws
and regulations, which impose significant compliance obligations. In the European Union and the United Kingdom, the collection and use of
personal data, including clinical trial data, is governed by the provisions of the General Data Protection Regulation, or GDPR. The GDPR,
together with national legislation, regulations and guidelines of the European Union member states and the United Kingdom governing the
processing of personal data, impose strict obligations and restrictions on the ability to collect, analyze and transfer personal data, including
health  data  from  clinical  trials  and  adverse  event  reporting.  In  particular,  these  obligations  and  restrictions  concern  the  consent  of  the
individuals to whom the personal data relates, the information provided to the individuals, the transfer of personal data out of the European
Union or the United Kingdom, security breach notifications, security and confidentiality of the personal data and imposition of substantial
potential fines for breaches of the data protection obligations. Compliance with the GDPR is a rigorous and time-intensive process that may
increase the cost of doing business to ensure full compliance. Furthermore, European data protection authorities may interpret the GDPR and
national  laws  differently  and  impose  additional  requirements,  which  add  to  the  complexity  of  processing  personal  data  in  or  from  the
European Union or United Kingdom.

Human Capital

As  of  February  16,  2023,  we  had  226  full-time  employees.  None  of  our  employees  are  represented  by  a  collective  bargaining

agreement, and we have never experienced a work stoppage.

We  believe  that  our  future  success  largely  depends  upon  our  continued  ability  to  attract  and  retain  a  diverse  workforce  of  highly
skilled and dedicated employees. We pride ourselves on being an equal opportunity employer and strictly prohibit unlawful discrimination
based on color, religion, gender, sexual orientation, gender identity/expression, national origin/ancestry, age, disability, marital and veteran
status.

We  expect  to  continue  to  grow  our  organization  to  support  the  commercialization  of  BRIUMVI  and  to  enhance  our  overall
development capabilities for current or future products under development.  As part of that process, we will continue to evaluate the business
needs and market opportunities, balancing in-house expertise and core competencies with outsourced capacity.

Drug development and commercialization requires deep expertise across a broad array of disciplines. Pharmaceutical companies of
all sizes compete for a limited number of qualified applicants to fill specialized positions. To attract qualified candidates, the Company offers
an attractive total rewards package, consisting of base salary, cash bonus, a comprehensive benefit package, equity compensation, and 401(k)
plan. Bonus opportunities and equity compensation increase as a percentage of total compensation based on level of responsibility, and actual
bonus awards are based on performance.

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ITEM 1A. RISK FACTORS.

You should carefully consider the following risk factors and the other information contained elsewhere in this Annual Report before
making an investment in our securities. If any of the following risks occur, our business, financial condition or operating results could be
materially harmed. An investment in our securities is speculative in nature, involves a high degree of risk, and should not be made by an
investor  who  cannot  bear  the  economic  risk  of  its  investment  for  an  indefinite  period  of  time  and  who  cannot  afford  the  loss  of  its  entire
investment. The risks described below are not the only ones that our business faces. Additional risks not currently known to us or that we
currently deem to be immaterial may adversely impact our business in the future.

Risks Related to Commercialization

If we obtain FDA approval for a product candidate and do not achieve broad market acceptance among physicians, patients, healthcare
payors, and the medical community, the revenues that we generate from product sales will be limited.

We  currently  have  one  marketed  product,  BRIUMVI,  which  received  approval  from  the  FDA  on  December  28,  2022,  for  the
treatment  of  relapsing  forms  of  multiple  sclerosis  (RMS),  to  include  clinically  isolated  syndrome,  relapsing-remitting  disease,  and  active
secondary progressive disease, in adults.

While we have initiated the commercial launch of BRIUMVI in the U.S., we have limited experience as a commercial company, and
our ability to successfully overcome the risks associated with commercializing drugs in the biopharmaceutical industry, including the risk that
our products do not achieve an adequate level of acceptance, remains uncertain. BRIUMVI, as well as other drugs that we may bring to the
market in the future, may not gain market acceptance by physicians, patients, third-party payors and others in the healthcare community. As a
result, we may not generate significant revenues or meet our revenue projections or guidance and may not become profitable. The degree of
market acceptance of BRIUMVI, as well as any future product candidates for which we may receive approval, will depend on a number of
factors, including: 

● the timing of our receipt of marketing approvals, the terms of such approvals, and the countries in which such approvals are

obtained;

● the efficacy, safety and tolerability as demonstrated in clinical trials and as compared to alternative treatments;
● the timing of market introduction of BRIUMVI and any of our product candidates, as well as competitive products;
● the indications for which our products are approved, and other aspects of the approved labeling for such products;
● acceptance  by  physicians,  advanced  practitioners,  major  operators  of  neurology  clinics,  and  patients  of  our  products  as  safe,

tolerable and effective treatments;

● the potential and perceived advantages or disadvantages of our products compared to alternative treatments;
● our ability to offer our products for sale at competitive prices;
● the availability of adequate reimbursement by third-party payors and government authorities;
● the extent of patient cost-sharing obligations, including copays and deductibles;
● changes in regulatory requirements by government authorities for our products;
● relative convenience and ease of administration;
● the prevalence and severity of side effects and adverse events;
● the willingness of the target patient population to try new therapies and of physicians to prescribe these therapies;
● the effectiveness of our sales and marketing efforts;
● protecting our rights in our intellectual property portfolio;
● our ability to maintain a reliable supply of our products that meets market demand; and
● favorable or unfavorable publicity relating to our products or relating to the Company.

In addition, the COVID-19 pandemic could impact commercialization of BRIUMVI. Patients and healthcare providers have raised
concerns  that  immunosuppressive  products  like  anti-CD20  antibodies  and  other  B-cell  targeted  agents  may  increase  the  risk  of  acquiring
COVID-19 or lead to more severe complications or outcomes upon infection, including death. These concerns may impact the commercial
potential for BRIUMVI and other immunosuppressive products that we have in development. The length of time and full extent to which the
COVID-19 pandemic directly or indirectly impacts our commercialization efforts depends on future developments that are highly uncertain,
subject  to  change  and  are  difficult  to  predict.  For  a  discussion  of  additional  pandemic-related  risks  to  our  business,  see  below  under  the
heading “Risks Related to the COVID-19 Pandemic.”

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If  BRIUMVI,  or  any  future  product  candidates  for  which  we  receive  regulatory  approval,  do  not  achieve  an  adequate  level  of
acceptance by physicians, hospitals, healthcare payors and patients, we may not generate sufficient revenue from these products and we may
not become or remain profitable, which would have a material adverse effect on our business.

We may be subject to limitations on the indicated uses or requirements to fulfill certain post-marketing requirements to the satisfaction of
regulatory authorities or may be unable to maintain marketing approval for BRIUMVI or future products that we may bring to market.

Regulatory approvals for our product or any of our product candidates may be subject to limitations on the approved indicated uses
for  which  the  product  may  be  marketed  or  contain  requirements  for  potentially  costly  post-marketing  testing,  including  Phase  IV  clinical
trials, and surveillance to monitor the safety and efficacy of the approved product candidate. For example, with respect to the FDA’s approval
of  BRIUMVI  for  RMS,  maintenance  of  this  approval  is  subject  to  certain  post-marketing  requirements  and  commitments,  including  long-
term safety studies, as well as studies to evaluate the effects of BRIUMVI in pregnant women and pediatric populations, among others. These
studies are highly specialized in their design and conduct and are associated with considerable expenses, and based on the outcome, could
result in further labeling restrictions that could impair or restrict the way in which we are able to market BRIUMVI, or negatively impact its
overall clinical profile.

In  addition,  with  respect  to  BRIUMVI  and  any  product  candidate  that  the  FDA  or  a  comparable  foreign  regulatory  authority
approves, the manufacturing processes, testing, labeling, packaging, distribution, import, export, adverse event reporting, storage, advertising,
promotion and recordkeeping for the product will be subject to extensive and ongoing regulatory requirements. These requirements include
submissions  of  safety  and  other  post-marketing  information  and  reports,  registration,  as  well  as  continued  compliance  with  current  Good
Manufacturing Practices (GMPs), with Good Clinical Practices (GCPs), for any clinical trials that we conduct post-approval, and with Good
Laboratory Practices (GLPs), for any nonclinical studies. Later discovery of previously unknown problems with a product or with our third-
party  manufacturers  or  manufacturing  processes,  or  failure  to  comply  with  regulatory  requirements,  may  result  in,  among  other  things,
restrictions on the marketing or manufacturing of the product, withdrawal of the product from the market, mandatory safety labeling changes
or  product  recalls,  suspension  or  revocation  of  product  approvals,  product  seizure  or  detention,  refusal  to  permit  the  import  or  export  of
products,  and  injunctions  or  the  imposition  of  civil  or  criminal  penalties,  all  of  which  would  adversely  affect  our  business,  prospects  and
ability to achieve or sustain profitability.

BRIUMVI,  and  any  of  our  product  candidates  for  which  we  in  the  future  obtain  approval,  may,  after  approval,  be  found  to  cause
undesirable side effects that could result in significant negative consequences following commercialization.

As BRIUMVI or any future approved products are used more widely or for a longer duration after being brought to market, data
may emerge from clinical studies, including confirmatory or other post-marketing studies, or from adverse event reporting, that may affect
the commercial potential of our products. For example, as additional patients are exposed for longer durations to a product in the commercial
and clinical settings, it is unknown whether greater frequency and/or severity of adverse events are likely to occur or whether an acceptable
safety and tolerability profile will continue to be demonstrated. If we or others identify unexpected side effects, caused by BRIUMVI or our
product candidates following introduction into the market, a number of potentially significant negative consequences could result, including:

● regulatory authorities may withdraw or limit the use (indication) of such products;
● regulatory authorities may require the addition of labeling statements, including warnings or boxed warnings, precautions, or
contraindications  that  could  diminish  the  usage  of  the  product  or  otherwise  limit  the  commercial  success  of  the  affected
product;

● we may be required to change the way such drug candidates are distributed or administered, or to conduct additional clinical

trials;

● regulatory  authorities  may  require  a  Risk  Evaluation  and  Mitigation  Strategy  (REMS),  a  plan  to  mitigate  risks,  which  could
include  a  Medication  Guide,  physician  communication  plans,  or  elements  to  assure  safe  use,  such  as  restricted  distribution
methods, patient registries and other risk minimization tools;

● we may be subject to regulatory investigations and government enforcement actions;
● we may decide to remove such drug candidates from the marketplace;
● we may not be able to enter into collaboration agreements on acceptable terms and execute on our business model;
● we could be sued and held liable for injury caused to individuals exposed to or taking our products; and
● our reputation may suffer.

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Any  one  or  a  combination  of  these  events  could  prevent  us  from  maintaining  regulatory  approval  and  achieving  or  maintaining
market  acceptance  of  the  affected  product  or  could  substantially  increase  the  costs  and  expenses  of  commercializing  the  affected  product,
which in turn could significantly impact our ability to successfully commercialize our drug candidates and generate revenues.

The incidence and prevalence for target patient populations of BRIUMVI and our product candidates, including TG-1701 and TG-1801
in B-cell disorders, have not been established with precision. If the market opportunities for BRIUMVI and our product candidates are
smaller than we estimate or if any approval that we obtain is based on a narrower definition of the patient population, our revenue and
ability to achieve profitability will be adversely affected.

The  precise  incidence  and/or  prevalence  of  RMS  are  unknown.  Our  projections  of  ublituximab  in  RMS,  as  well  as  the  subset  of
these  patients  who  have  the  potential  to  benefit  from  treatment  with  our  products  are  based  on  estimates  and  our  current  knowledge  and
understanding  of  the  disease.  These  estimates  are  typically  based  on  one-on-one  and  group  interactions  with  target  physicians  and  other
sources available at the time we make the estimates, including the scientific literature, healthcare utilization databases and market research.
Although  we  believe  our  estimates  are  reasonable,  and  although  there  has  been  no  material  adverse  condition  in  the  market  so  far,  many
factors may limit their accuracy. For example, the sources we use to make the estimates may prove to be incorrect. Further, new studies may
change the estimated incidence or prevalence of these diseases and the number of patients may turn out to be lower than expected.

The  total  addressable  market  opportunity  for  BRIUMVI  ultimately  depends  upon,  among  other  things,  the  approved  prescribing
information, acceptance by the medical community, patient access, and drug pricing and reimbursement. The number of patients in major
markets,  including  the  number  of  addressable  patients  in  those  markets,  may  turn  out  to  be  lower  than  expected,  patients  may  not  be
otherwise amenable to treatment with our drugs, new patients may become increasingly difficult to identify or gain access to, or patients and
physicians may choose to utilize competitive products, all of which would adversely affect our results of operations and our business.

We face substantial competition, which may result in others commercializing drugs before or more successfully than we do resulting in
the reduction or elimination of our commercial opportunity.

We  operate  in  a  highly  competitive  segment  of  the  biotechnology  and  biopharmaceutical  market.  We  face  competition  from
numerous  sources,  including  commercial  pharmaceutical  and  biotechnology  enterprises,  academic  institutions,  government  agencies,  and
private and public research institutions. Many of our competitors have significantly greater financial, product development, manufacturing
and  commercialization  resources.  Large  pharmaceutical  companies  have  extensive  experience  in  clinical  testing  and  obtaining  regulatory
approval for drugs. Additionally, many universities and private and public research institutes are active in research in the same diseases that
we  are,  including  in  the  fields  of  neurology  and  immunology,  some  in  direct  competition  with  us.  We  may  also  compete  with  these
organizations  to  recruit  scientists  and  clinical  development  personnel.  Smaller  or  early-stage  companies  may  also  prove  to  be  significant
competitors, particularly through collaborative arrangements with large and established companies.

Our  commercial  opportunity  could  be  reduced  or  eliminated  if  our  competitors  develop  and  commercialize  drugs  that  are  more
effective, have fewer or less severe side effects, are more convenient or are priced or contracted differently than any drugs that we or our
collaborators  may  develop.  Our  competitors  also  may  obtain  FDA  or  other  regulatory  approval  for  their  drugs  more  rapidly  than  we  may
obtain approval for ours, which could result in our competitors establishing a strong market position before we or our collaborators are able to
enter the market. In a competitive environment, a company’s communications may also be subject to heightened scrutiny from regulators and
competitors,  under  laws,  regulations,  and  guidance  about  promotional  communications  (advertising  and  promotional  labeling)  and  non-
promotional communications (e.g., certain educational and scientific exchange); and with regard to potential competitor actions under federal
law (the Lanham Act) and congruous state law, which protect businesses against the unfair competition of misleading advertising or labeling.

The key competitive factors affecting the success of all of our drug candidates, if approved, are likely to be their efficacy, safety,

convenience, price, the level of generic competition and the availability of reimbursement from government and other third-party payors.

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New developments, including the development of other pharmaceutical technologies and methods of treating disease, occur in the
pharmaceutical and life sciences industries at a rapid pace. These developments may render our product or product candidates obsolete or
noncompetitive. Compared to us, many of our potential competitors have substantially greater:

● research and development resources, including personnel and technology;
● regulatory experience;
● pharmaceutical development, clinical trial and pharmaceutical commercialization experience;
● experience and expertise in exploitation of intellectual property rights; and
● capital resources.

We will also face competition from these third parties in recruiting and retaining qualified personnel, establishing clinical trial sites,

patient registration for clinical trials, and in identifying and in-licensing new products and product candidates.

BRIUMVI,  as  well  as  any  products  that  we  are  able  to  commercialize  in  the  future,  may  become  subject  to  unfavorable  pricing
regulations or third-party payor coverage and reimbursement policies, which would harm our business.

The regulations that govern regulatory approvals, pricing and reimbursement for new drugs vary widely from country to country.
Current  and  future  legislation  may  significantly  change  the  approval  requirements  in  ways  that  could  involve  additional  costs  and  cause
delays in obtaining approvals. 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  approval  is  granted.  In  some  foreign  markets,  prescription  pharmaceutical  pricing  remains
subject  to  continuing  governmental  control  even  after  initial  approval  is  granted.  As  a  result,  we  might  obtain  marketing  approval  for  a
product in a particular country, but then be subject to price regulations that delay our commercial launch of the drug candidate, possibly for
lengthy time periods, and negatively impact the revenues we are able to generate from the sale of the drug candidate in that country. Adverse
pricing limitations may hinder our ability to recoup our investment in one or more products, even if more of our product candidates obtain
marketing approval. 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 reimbursement levels for new drugs, if applicable, may also not
be sufficient to cover our costs and may not be made permanent.

Our ability to commercialize any product successfully also will depend in part on the extent to which coverage and reimbursement
for  our  products  and  related  treatments  will  be  available  from  government  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  and  co-payment  levels.  A  primary  trend  in  the  U.S.  healthcare  industry  and
elsewhere  is  cost  containment.  Government  authorities  and  third-party  payors  have  attempted  to  control  costs  by  restricting  coverage  and
limiting the amount of reimbursement for particular drugs. Increasingly, third-party payors are requiring that drug companies provide them
with predetermined discounts from list prices and are challenging the prices charged for drugs, examining the cost effectiveness of drugs in
addition to their safety and efficacy. Third-party commercial payors often rely upon Medicare coverage policy and payment limitations in
setting  their  own  reimbursement  policies.  Payors  may  restrict  coverage  of  some  products  by  using  formularies  under  which  only  selected
drugs  are  covered,  variable  co-payments  that  make  drugs  that  are  not  preferred  by  the  payor  more  expensive  for  patients,  and  utilization
management  controls,  such  as  requirements  for  prior  authorization  or  failure  first  on  another  type  of  treatment.  Payors  may  target  higher-
priced  drugs  for  imposition  of  these  obstacles  to  coverage,  and  consequently  our  products  may  be  subject  to  payer-driven  restrictions.
Additionally, in countries where patients have access to insurance, as in the U.S., insurance co-payment amounts or other benefit limits may
represent  a  barrier  to  obtaining  or  continuing  use  of  our  products  that  receive  regulatory  approval.  If  we  are  unable  to  obtain  or  maintain
coverage, or coverage is reduced in one or more countries, our product sales may be lower than anticipated and our financial condition could
be harmed.

Net  prices  for  drugs  may  be  reduced  by  mandatory  discounts  or  rebates  required  by  government  healthcare  programs  or  private
payors and by any future relaxation of laws that presently restrict imports of drugs from countries where they may be sold at lower prices. In
the United States, for example, we must offer discounted pricing or rebates on purchases of pharmaceutical products under various federal
and state healthcare programs, such as the Medicaid Drug Rebate Program, the 340B drug pricing program and the Medicare Part D Program.
We  must  also  report  specific  prices  to  government  agencies  under  healthcare  programs,  such  as  the  Medicaid  Drug  Rebate  Program  and
Medicare  Part  B.  The  calculations  necessary  to  determine  the  prices  reported  are  complex  and  the  failure  to  report  prices  accurately  may
expose us to penalties. 

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If we are unable to expand our commercialization operations, we may not be successful in commercializing BRIUMVI or any product
candidate, if and when such product candidates are approved, and we may not be able to generate any revenue.

Commercialization of pharmaceutical products is an extremely complex and highly capital and resource intensive process, even for

established companies with existing infrastructure and significantly greater resources than we have, challenges have occurred.

We have made and continue to make significant investments in our commercial organization and infrastructure. We built processes
and  systems  to  support  the  commercialization  of  UKONIQ  in  the  U.S.  Although  we  withdrew  UKONIQ  from  sale,  we  are  using  and
expanding upon many of those systems and processes to market BRIUMVI following its commercial launch on January 26, 2023. There are
risks involved with establishing our own commercialization capabilities. For example, if we are unable to recruit and retain adequate numbers
of  effective  personnel  to  support  the  ongoing  commercialization  of  BRIUMVI,  we  may  not  be  successful  in  marketing  and  selling  the
product.

Additional  factors  that  may  inhibit  our  efforts  to  commercialize  BRIUMVI  and  our  other  product  candidates  on  our  own  and

generate product revenues include:

● the  costs  and  time  associated  with  the  initial  and  ongoing  training  of  commercialization  personnel  on  the  applicable  disease

states, products, competitors, and legal and regulatory compliance matters;

● the inability of commercialization personnel to obtain access to physicians or to effectively promote or provide education about

BRIUMVI and any future approved products;

● the lack of complementary drugs to be offered by the Company, which may put us at a competitive disadvantage relative to

companies with more extensive product lines;

● decisions  by  third-party  payors  to  deny  reimbursement  of  or  delay  coverage  decisions  regarding  BRIUMVI  or  following

approval of any product candidates;

● our ability to maintain a healthcare compliance program including effective mechanisms for compliance monitoring;
● the timing of product availability for commercial sale following approval and continued product supply; and
● unforeseen costs and expenses associated with creating a commercialization organization

In the future, we may choose to participate in sales activities with collaborators for our product and for our product candidates if and
when they are approved, particularly for regions outside the U.S. However, there are also risks with entering into these types of arrangements
with third parties to perform sales, marketing and distribution services. For example, we may not be able to enter into such arrangements on
terms that are favorable to us. Our drug revenues or the profitability of these drug revenues to us are likely to be lower than if we were to
market and sell any products or product candidates that we develop ourselves. In addition, we likely will have little control over such third
parties,  and  any  of  them  may  fail  to  devote  the  necessary  resources  and  attention  to  sell  and  market  our  product  or  product  candidates
effectively. If we do not establish sales and marketing capabilities successfully, either on our own or in collaboration with third parties, we
will not be successful in commercializing our drug candidates. Further, our business, results of operations, financial condition and prospects
will be materially adversely affected.

We may expand into certain European markets. Building and maintaining an infrastructure outside the United States is expensive,
complex,  resource  intensive  and  time  consuming.  We  have  not  undertaken  significant  commercialization  activities  outside  of  the  U.S.,
including in the EU, where the potential market opportunity for ublituximab, if approved, is smaller than the U.S. If we were to do so, we
would expect to incur significant expenses in establishing an infrastructure to commercialize outside the U.S. If this were to occur, depending
on the expenses incurred, it could have a negative impact our cash resources.

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Product  liability  lawsuits  against  us  could  cause  us  to  incur  substantial  liabilities  and  could  limit  commercialization  of  any  drug
candidates that we may develop.

We face an inherent risk of product liability exposure related to the testing of our product candidates in human clinical trials, and an
even  greater  risk  in  connection  with  the  commercialization  of  BRIUMVI  and  any  other  products  for  which  we  may  receive  marketing
authorization in the future. If we cannot successfully defend ourselves against claims that BRIUMVI or any of our product candidates caused
injuries, we could incur substantial liabilities. Regardless of merit or eventual outcome, liability claims may result in:

● decreased demand for any products that we may commercialize;
● injury to our reputation and significant negative media attention;
● withdrawal of clinical trial participants;
● significant costs to defend the related litigation, including the risk that any individuals who may face such related litigation may

in turn seek to recover from us;

● substantial monetary awards to trial participants or patients;
● loss of revenue; and
● the inability to commercialize any products or product candidates that we may develop.

Although  we  maintain  product  liability  insurance  coverage,  it  may  not  be  adequate  to  cover  all  liabilities  that  we  may  incur.
Insurance  coverage  is  increasingly  expensive.  We  may  not  be  able  to  maintain  insurance  coverage  at  a  reasonable  cost  or  in  an  amount
adequate to satisfy any liability that may arise.

Risks Related to Our Financial Position and Need for Additional Capital

We have incurred significant operating losses since our inception and anticipate that we will incur continued losses for the foreseeable
future.

Biopharmaceutical drug development is a highly speculative undertaking and involves a substantial degree of risk. We commenced
operations in January 2012. To date, our operations have been limited primarily to organizing and staffing our company, business planning,
raising  capital,  developing  our  technology,  identifying  potential  drug  candidates,  undertaking  pre-clinical  studies  and  clinical  trials,
commercializing UKONIQ (which we withdrew from sale), and launching BRIUMVI. We are transitioning from a company with a research
and  development  focus  and  commercialization  capabilities  in  oncology  to  a  company  capable  of  supporting  commercial  activities  in
neurology and immunology in the U.S. and outside the U.S. This transition involves a wide variety of risks, and we may not be successful in
such transition.

Since  inception,  we  have  focused  our  efforts  and  financial  resources  on  clinical  trials,  manufacturing  of  our  product  and  product
candidates, and preparing to support a commercial product. To date, we have financed our operations primarily through public offerings of
our common stock and debt financing. Since inception, we have incurred significant operating losses. Substantially all our operating losses
have resulted from costs incurred in connection with our research and development programs and from selling, general and administrative
costs  associated  with  our  operations,  including  our  commercialization  activities.  We  expect  to  continue  to  incur  significant  expenses  and
operating losses for the foreseeable future. Our prior losses, combined with expected future losses, have had, and will continue to have an
adverse effect on our stockholders’ deficit and working capital.  BRIUMVI is currently our only marketed product. We expect to continue to
incur  significant  research  and  development  expenses  and  we  expect  to  continue  to  incur  significant  commercialization  and  outsourced-
manufacturing  expenses  as  we  commercialize  BRIUMVI.  Because  of  the  numerous  risks  and  uncertainties  associated  with  developing
pharmaceuticals, we are unable to predict the extent of any future losses or when we will become profitable, if at all. Even if we do become
profitable, we may not be able to sustain or increase our profitability on a quarterly or annual basis. Our ability to become profitable depends
upon our ability to generate substantial revenue.

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We have not generated any significant revenue from sales of any of our products. It is uncertain when and if we will generate any
significant revenue from the sale of our product or any product candidates, if approved, in the future. Furthermore, no assurance can be given
that we will meet revenue projections or guidance with respect to BRIUMVI or our product candidates, if approved. To obtain significant and
sustained  revenues  and  meet  our  revenue  projections  or  guidance,  we  must  succeed,  either  alone  or  with  others,  in  (i)  obtaining  and
maintaining  regulatory  approval  for  our  product  and  product  candidates;  and  (ii)  manufacturing  and  marketing  our  products  and  product
candidates. Our ability to generate sustained revenue depends on a number of factors, including, but not limited to, our ability to:

● successfully complete clinical trials that meet their clinical endpoints;
● initiate and successfully complete all safety, pharmacokinetic, biodistribution, and non-clinical studies required to obtain U.S.

and foreign marketing approval for our product and product candidates;

● obtain  approval  from  the  FDA  and  foreign  equivalents  to  market  and  sell  our  product  and  product  candidates,  and  maintain

FDA approval of BRIUMVI for RMS;

● establish  and  maintain  commercial  manufacturing  capabilities  with  third  parties  that  are  satisfactory  to  the  regulatory

authorities, cost effective, and that are capable of providing commercial supply of our product and product candidates;

● expand  on  our  commercialization  infrastructure  to  commercialize  BRIUMVI,  and/or  entering  into  collaborations  with  third

parties; and

● achieve market acceptance of BRIUMVI and any other products for which we may receive regulatory approval in the medical

community and with third-party payors.

If we are unable to generate significant and sustained revenues, we will not become profitable and we will be unable to continue our

operations without continued funding.

We will need to raise substantial additional funding. If we are unable to raise capital when needed, we would be forced to delay, reduce or
eliminate some of our drug development programs or commercialization efforts.

The development of pharmaceuticals is capital-intensive. We are currently advancing our early-stage drug candidates, TG-1701 and
TG-1801 in ongoing Phase 1 studies to identify tolerable and efficacious doses, we are also advancing BRIUMVI for long-term tolerability in
an Open-Label Extension of the Phase 3 ULTIMATE I and II trials and anticipate conducting additional clinical studies in the near future
including those necessary to satisfy post-approval commitments for regulatory authorities. Moreover, now that we have launched BRIUMVI,
we will need to expend substantial resources on maintaining approvals, continuing commercialization, and manufacturing over the next 6 to
12 months.

The amount and timing of our future funding requirements will depend on many factors, including, but not limited to, the following:

● the success of the commercialization of BRIUMVI and any other products for which we receive regulatory approval;
● the costs and timing of clinical and commercial manufacturing supply arrangements for each product and product candidate;
● the costs of expanding our sales, distribution, and other commercialization capabilities;
● the costs and timing of regulatory approvals;
● the progress of our clinical trials, including expenses to support the trials and milestone payments that may become payable under

our license agreements;

● our ability to establish and maintain strategic collaborations, including licensing and other arrangements;
● the costs involved in enforcing or defending patent claims or other intellectual property rights; and
● the extent to which we in-license or invest in other indications or product candidates.

As a result, significant additional funding will be required. Additional sources of financing to continue our operations in the future
might not be available on favorable terms, if at all. If we do not succeed in raising additional funds on acceptable terms, we could be forced to
discontinue  product  development,  reduce  or  forego  commercialization  efforts  that  are  required  for  successful  commercialization  of
BRIUMVI, or any of our product candidates and otherwise forego attractive business opportunities. Any additional sources of financing may
involve  the  issuance  of  our  equity  securities,  which  would  have  a  dilutive  effect  to  stockholders.  Currently,  other  than  BRIUMVI,  our
products are investigational and have not been approved by the FDA or any foreign regulatory authority for sale. For the foreseeable future,
we will have to fund all our operations and capital expenditures from sales of BRIUMVI in the U.S., cash on hand, and amounts raised in
future  offerings  or  financings.  Accordingly,  our  prospects  must  be  considered  in  light  of  the  uncertainties,  risks,  expenses  and  difficulties
frequently encountered by companies in the early stages of commercial operations and the competitive environment in which we operate.

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Raising  additional  capital  may  cause  dilution  to  our  stockholders,  restrict  our  operations  or  require  us  to  relinquish  rights  to  our
technologies or drug candidates and occupy valuable management time and resources.

Until  such  time,  if  ever,  as  we  can  generate  substantial  revenues,  we  expect  to  finance  our  cash  needs  through  a  combination  of
public  and  private  equity  offerings,  debt  financings,  collaborations,  strategic  alliances  and  licensing  arrangements.  We  do  not  have  any
committed  external  source  of  funds,  other  than  funds  already  borrowed  under  the  loan  and  security  agreement  that  we  entered  into  with
Hercules  in  February  2019,  and  which  was  expanded  in  December  2021  (see  Note  6  to  our  consolidated  financial  statements  for  more
information). To the extent that we raise additional capital through the sale of common stock or securities convertible or exchangeable into
common stock, the ownership interest of our stockholders will be diluted, and the terms of these securities may include liquidation or other
preferences that materially adversely affect the rights of our common stockholders. We may also seek funds through collaborations, strategic
alliances or licensing arrangements with third parties at a time that is not desirable to us and we may be required to relinquish valuable rights
to some intellectual property, future revenue streams, research programs or products and product candidates or to grant licenses on terms that
may not be favorable to us, any of which may have a material adverse effect on our business, operating results and prospects. Debt financing,
if  available,  may  involve  agreements  that  include  covenants  limiting  or  restricting  our  ability  to  take  specific  actions,  such  as  incurring
additional debt, making capital expenditures, or declaring dividends. We cannot guarantee that future financing will be available in sufficient
amounts or on terms acceptable to us, if at all, which could limit our ability to expand our business operations and could harm our overall
business prospects. See our risk factors below under the heading “Risks Related to Our Indebtedness.”

Additionally, fundraising efforts may divert our management from their day-to-day activities, which may adversely affect our ability
to develop and commercialize our drug candidates. Dislocations in the financial markets have generally made equity and debt financing more
difficult to obtain and may have a material adverse effect on our ability to meet our fundraising needs. Moreover, the issuance of additional
securities, whether equity or debt, by us, or the possibility of such issuance, may cause the market price of our shares to decline.

Long-term commercialization and product candidate development timelines and projections in this report are based on the assumption of
further financing.

The timelines and projections in this report are predicated upon the assumption that we will raise additional financing in the future to
continue  our  long-term  commercialization  efforts  and  the  development  of  our  product  and  product  candidates.  In  the  event  we  do  not
successfully raise subsequent financing, such commercialization and product development activities may be curtailed commensurate with the
magnitude of the shortfall. If our commercialization or product development activities are slowed or stopped, we would be unable to meet the
timelines and projections outlined in this filing. Failure to progress our commercialization activities or the development of our product and
product  candidates  as  anticipated  will  have  a  negative  effect  on  our  business,  future  prospects,  and  ability  to  obtain  further  financing  on
acceptable terms, if at all, and the value of the enterprise.

Due to limited resources, we may fail to capitalize on programs or product candidates that may present a greater commercial opportunity
or for which there is a greater likelihood of success.

Because we have limited resources, we may forego or delay pursuit of opportunities with certain programs or product candidates or
for  indications  that  later  prove  to  have  greater  commercial  potential.  Our  estimates  regarding  the  potential  market  for  a  product  candidate
could  be  inaccurate,  and  our  spending  on  current  and  future  research  and  development  programs  may  not  yield  any  commercially  viable
products. If we do not accurately evaluate the commercial potential for a particular product candidate, we may relinquish valuable rights to
that  product  candidate  through  strategic  collaboration,  licensing  or  other  arrangements  in  cases  in  which  it  would  have  been  more
advantageous  for  us  to  retain  sole  development  and  commercialization  rights  to  such  product  candidate.  Alternatively,  we  may  allocate
internal  resources  to  a  product  candidate  in  a  therapeutic  area  in  which  it  would  have  been  more  advantageous  to  enter  into  a  partnering
arrangement.

If  any  of  these  events  occur,  we  may  be  forced  to  abandon  or  delay  our  development  efforts  with  respect  to  a  particular  product
candidate or fail to develop a potentially successful product candidate, which could have a material adverse effect on our business, financial
condition, results of operations and prospects.

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Our level of indebtedness and debt service obligations could adversely affect our financial condition and may make it more difficult for us
to fund our operations.

In February 2019, we entered into a Loan and Security Agreement, with Hercules Capital, Inc., a Maryland corporation (Hercules)
and on December 30, 2021 (the First Amendment Closing Date), the Company entered into an Amended and Restated Loan and Security
Agreement (the Amended Loan Agreement) with Hercules. Under the Amended Loan Agreement, Hercules increased the aggregate principal
amount  of  the  loan,  available  at  the  Company’s  option,  from  $60.0  million  to  $200.0  million  (see  Note  6  to  our  consolidated  financial
statements for more information). A first advance of $70.0 million was drawn at the First Amendment Closing Date, a portion of which was
used to refinance the then outstanding loan balance of approximately $7.8 million. Now that we have received approval for BRIUMVI, we
have the option to request an additional $45.0 million under the Amended Loan Agreement. Such option will lapse if not elected by March
31, 2023. We have the option to request additional loan advances, in an aggregate principal amount of up to $65.0 million under the Amended
Loan Agreement.

All  obligations  under  the  Amended  Loan  Agreement  are  secured  by  substantially  all  our  existing  property  and  assets,  excluding
intellectual property. This indebtedness may create additional financing risk for us, particularly if our business or prevailing financial market
conditions  are  not  conducive  to  paying  off  or  refinancing  its  outstanding  debt  obligations  at  maturity.  This  indebtedness  could  also  have
important negative consequences, including:

● we will need to repay the indebtedness by making payments of interest and principal, which will reduce the amount of money

available to finance our operations, our research and development efforts and other general corporate activities; and

● our failure to comply with the restrictive covenants in the Amended Loan Agreement could result in an event of default that, if
not cured or waived, would accelerate our obligation to repay this indebtedness, and Hercules could seek to enforce its security
interest in the assets securing such indebtedness.

To the extent additional debt is added to our current debt levels, the risks described above could increase.

We may not have cash available in an amount sufficient to enable us to make interest or principal payments on our indebtedness when
due.

Failure to satisfy our current and future debt obligations under the Amended Loan Agreement, or the breach of any of its covenants,
subject to specified cure periods with respect to certain breaches, could result in an event of default and, as a result, Hercules could accelerate
all the amounts due. In the event of an acceleration of amounts due under the Amended Loan Agreement as a result of an event of default, we
may not have enough available cash or be able to raise additional funds through equity or debt financings to repay such indebtedness at the
time  of  such  acceleration.  In  that  case,  we  may  be  required  to  delay,  limit,  reduce  or  terminate  our  product  candidate  development  or
commercialization efforts or grant to others rights to develop and market product candidates that we would otherwise prefer to develop and
market ourselves. Hercules could also exercise its rights as collateral agent to take possession and dispose of the collateral securing the term
loan for its benefit, which collateral includes substantially all our property other than intellectual property. Our business, financial condition
and results of operations could be materially adversely affected as a result of any of these events.

The Amended Loan Agreement imposes operating and other restrictions on the Company. Such restrictions will affect, and in many

respects limit or prohibit, our ability and the ability of any future subsidiary to, among other things: 

● dispose of certain assets;
● change its lines of business;
● engage in mergers, acquisitions or consolidations;
● incur additional indebtedness;
● create liens on assets;
● pay dividends and make contributions or repurchase our capital stock; and
● engage in certain transactions with affiliates.

The breach of any of these restrictive covenants could have a material adverse effect on our business and prospects.

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Risks Related to Drug Development and Regulatory Approval

If we are unable to obtain and maintain regulatory approval for our product candidates and ultimately cannot successfully commercialize
our product or product candidates, or experience significant delays in doing so, our business will be materially harmed.

On April 15, 2022, we announced our voluntary withdrawal of the pending BLA and sNDA for U2 to treat CLL and SLL and the
voluntary withdrawal of UKONIQ from the market. We are still assessing the impact, if any, of the withdrawal of the BLA and sNDA for U2
and the withdrawal of UKONIQ from sale.

Our ability to generate revenues from product sales will depend largely on the successful commercialization of BRIUMVI. Each of
our  product  candidates  will  require  additional  non-clinical  or  clinical  development,  regulatory  approval,  and  sufficient  clinical  and
commercial supply. The success of our development programs and achievement of regulatory approval of our product candidates will depend
on several factors, including the following:

● successful completion of our clinical programs with positive results that support a finding of effectiveness and an acceptable

safety profile of our product candidates in the intended populations within the timeframes we have projected;

● INDs and clinical trial applications (CTAs), being cleared/approved such that our product candidates can commence clinical

trials;

● successful initiation and completion of preclinical studies and successful initiation of, enrollment in, and completion of clinical

trials;

● sufficiency of our financial and other resources to complete the necessary preclinical studies and clinical trials;
● receipt of regulatory approvals from applicable regulatory authorities for our product candidates;
● establishing  commercially  viable  arrangements  with  third-party  manufacturers  for  clinical  supply  and  commercial

manufacturing; and

● obtaining and maintaining patent and trade secret protection or regulatory exclusivity for our product candidates.

If we do not achieve one or more of these factors in a timely manner or at all, we could experience significant delays in our clinical

programs and regulatory submission timelines and may not be able to obtain regulatory approval for our product candidates.

Because results of preclinical studies and early clinical trials are not necessarily predictive of future results, any product candidate we
advance  may  not  have  favorable  results  in  later  clinical  trials  or  receive  regulatory  approval.  Moreover,  interim,  “top-line,”  and
preliminary  data  from  our  clinical  trials  that  we  announce  or  publish  may  change,  or  the  perceived  product  profile  may  be  negatively
impacted, as more patient data or additional endpoints (including efficacy and safety) are analyzed.

Pharmaceutical development has inherent risks. The outcome of preclinical development testing and early clinical trials may not be
predictive  of  the  outcome  of  later  clinical  trials,  and  interim  results  of  a  clinical  trial  do  not  necessarily  predict  final  results.  Moreover,
preclinical and clinical data are often susceptible to varying interpretations and analyses, and many companies have believed their product
candidates  performed  satisfactorily  in  preclinical  studies  and  clinical  trials  have  nonetheless  failed  to  obtain  marketing  approval.  Once  a
product  candidate  has  displayed  sufficient  preclinical  data  to  warrant  clinical  investigation,  we  will  be  required  to  demonstrate,  through
adequate  and  well-controlled  clinical  trials,  that  our  product  candidates  are  effective  with  a  favorable  benefit-risk  profile  for  use  in
populations for their target indications before we can seek regulatory approvals for their commercial sale. Many drug candidates fail in the
early stages of clinical development for safety and tolerability issues or for insufficient clinical activity, despite promising pre-clinical results.
Accordingly, no assurance can be made that a safe and efficacious dose can be found for these compounds or that they will ever enter into
advanced clinical trials alone or in combination with other product candidates. Moreover, success in early clinical trials does not mean that
later  clinical  trials  will  be  successful  because  product  candidates  in  later-stage  clinical  trials  may  fail  to  demonstrate  sufficient  safety  or
efficacy despite having progressed through initial clinical testing. Companies frequently experience significant setbacks in advanced clinical
trials, even after earlier clinical trials have shown promising results. There is an extremely high rate of failure of pharmaceutical candidates
proceeding through clinical trials. 

Individually  reported  outcomes  of  patients  treated  in  clinical  trials  may  not  be  representative  of  the  entire  population  of  treated
patients in such studies. In addition, larger scale Phase 3 studies, which are often conducted internationally, are inherently subject to increased
operational risks compared to earlier stage studies, including the risk that the results could vary on a region to region or country to country
basis,  which  could  materially  adversely  affect  the  outcome  of  the  study  or  the  opinion  of  the  validity  of  the  study  results  by  applicable
regulatory agencies.

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From time to time, we may publicly disclose top-line or preliminary data from our clinical trials, which is based on a preliminary
analysis of available data, and the results and related findings and conclusions are subject to change following a more comprehensive review
of the data related to the particular study or trial. We also make assumptions, estimations, calculations and conclusions as part of our analyses
of such data, and we may not have received or had the opportunity to fully and carefully evaluate all data from the particular study or trial,
including all endpoints and safety data. As a result, top-line or preliminary results that we report may differ from future results of the same
studies, or different conclusions or considerations may qualify such results once additional data have been received and fully evaluated. Top-
line or preliminary data also remain subject to audit and verification procedures that may result in the final data being materially different
from  the  topline,  interim,  or  preliminary  data  we  previously  published.  When  providing  top-line  results,  we  may  disclose  the  primary
endpoint of a study before all secondary endpoints have been fully analyzed. A positive primary endpoint does not translate to all, or any,
secondary endpoints being met. As a result, top-line and preliminary data should be viewed with caution until the final data are available,
including data from the full safety analysis and the final analysis of all endpoints.

Further,  from  time  to  time,  we  may  also  disclose  interim  data  from  our  preclinical  studies  and  clinical  trials.  Interim  data  from
clinical  trials  that  we  may  complete  are  subject  to  the  risk  that  one  or  more  of  the  clinical  outcomes  may  materially  change  as  patient
enrollment  continues  and  more  patient  data  become  available.  For  example,  time-to-event  based  endpoints  such  as  duration  of  response
(DOR) and progression-free survival (PFS) have the potential to change with longer follow-up. In addition, as patients continue on therapy,
there can be no assurance given that the final safety data from studies, once fully analyzed, will be consistent with prior safety data presented,
will be differentiated from other similar agents in the same class, will support continued development, or will be favorable enough to support
regulatory approvals for the indications studied. Further, others, including regulatory agencies, may not accept or agree with our assumptions,
estimates, calculations, conclusions or analyses or may interpret or weigh the importance of data differently, which could impact the value of
the particular program, the approvability or commercialization of the particular product candidate or product and our company in general.
The  information  we  choose  to  publicly  disclose  regarding  a  particular  study  or  clinical  trial  is  based  on  what  is  typically  extensive
information, and regulators or others may not agree with what we determine is material or otherwise appropriate information to include in our
disclosure. If the interim, top-line or preliminary data that we report differ from final results, or if others, including regulatory authorities,
disagree  with  the  conclusions  we  have  reached,  our  ability  to  obtain  approval  for,  or  successfully  commercialize,  our  product  or  product
candidates may be harmed, which could harm our business, operating results, prospects or financial condition.

Many of the results reported in our early clinical trials rely on local investigator-assessed efficacy outcomes which may be subject to
greater variability or subjectivity than results assessed in a blinded, independent, centrally reviewed manner, often required of later phase,
adequate  and  well-controlled  registration-directed  clinical  trials.  If  the  results  from  our  registration-directed  trials  are  different  from  the
results  found  in  the  earlier  studies,  we  may  need  to  terminate  or  revise  our  clinical  development  plan,  which  could  extend  the  time  for
conducting our development program and could have a material adverse effect on our business.

Clinical  drug  development  involves  a  lengthy  and  expensive  process,  with  an  uncertain  outcome.  We  may  incur  additional  costs  or
experience delays in completing, or ultimately be unable to complete, the development and commercialization of our product candidates.

Before  obtaining  marketing  approval  from  regulatory  authorities  for  the  sale  of  any  product  candidate,  we  must  complete  pre-
clinical studies and then conduct extensive clinical trials to demonstrate the safety and efficacy of our product candidates in humans. Clinical
testing is expensive, is difficult to design and implement, can take many years to complete and is uncertain as to outcome. It is impossible to
predict  when  or  if  our  product  candidates  will  prove  effective  and  safe  in  humans,  will  receive  regulatory  approval  or  will  have  a
differentiated safety and tolerability profile. A failure of one or more clinical trials can occur at any stage of testing. Accordingly, our ongoing
trials and future clinical trials may not be successful. Even if our clinical trials produce positive results, there can be no guarantee that the
positive outcomes will be replicated in future studies either within the same indication as previously evaluated or in alternate indications and
settings.

Successful  completion  of  our  clinical  trials  is  a  prerequisite  to  submitting  an  NDA  or  a  BLA  to  the  FDA  and  a  Marketing
Authorization  Application  (MAA)  to  the  European  Medicines  Agency  (EMA)  for  each  product  candidate  and,  consequently,  the  ultimate
approval and commercial marketing of our product candidates. We do not know whether any of our ongoing or future clinical trials for our
product candidates will be completed on schedule, if at all.

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Whether or not and how quickly we complete clinical trials depends in part upon the rate at which we are able to engage clinical
research/trial sites and, thereafter, the rate of enrollment of patients, and the rate at which we collect, clean, lock and analyze the clinical trial
database. Patient enrollment is a function of many factors, including the size of the patient population, the proximity of patients to clinical
sites, the eligibility criteria for the study, the existence of competitive clinical trials, and whether existing or new drugs are approved for the
indication we are studying. We are aware that other companies are currently conducting or planning clinical trials that seek to enroll patients
with the same diseases that we are studying. We may experience unforeseen events, such as the COVID-19 pandemic, that could delay or
prevent our ability to complete current clinical trials, initiate new trials, receive marketing approval or commercialize our product candidates,
including:

● the  FDA  or  other  regulatory  authorities  may  require  us  to  submit  additional  data  or  impose  other  requirements  before

permitting us to initiate a clinical trial;

● the FDA or other regulatory authorities or institutional review boards (IRBs) or ethics committees (ECs) may not authorize us
or our investigators to commence a clinical trial or conduct a clinical trial at a prospective trial site or in a country; we may
experience  delays  in  reaching,  or  fail  to  reach,  agreement  on  acceptable  terms  with  prospective  trial  sites  and  prospective
clinical research organizations (CROs), the terms of which can be subject to extensive negotiation and may vary significantly
among different CROs and trial sites;

● clinical trials of our drug candidates may produce negative or inconclusive results, and we may decide, or regulatory authorities
may  require  us,  to  conduct  additional  pre-clinical  studies  or  clinical  trials  or  we  may  decide  to  abandon  drug  development
programs;

● the number of patients required for clinical trials of our drug candidates may be larger than we anticipate, and enrollment in
these clinical trials may be slower than we anticipate or participants may drop out of these clinical trials or fail to return for
post-treatment follow-up at a higher rate than we anticipate;

● our  third-party  contractors,  including  our  clinical  trial  sites,  may  fail  to  comply  with  regulatory  requirements  or  meet  their
contractual obligations to us in a timely manner, or at all, or may deviate from the clinical trial protocol or drop out of the trial,
which may require that we add new clinical trial sites or investigators;

● we may elect to or regulatory authorities or IRBs or ECs may require that we or our investigators suspend or terminate clinical
research for various reasons, including noncompliance with regulatory requirements or a finding that the participants are being
exposed to unacceptable health risks;

● the cost of clinical trials of our product candidates may be greater than we anticipate;
● the supply or quality of our product candidates or other materials necessary to conduct clinical trials of our product candidates
may be insufficient or inadequate, including, without limitation, as a result of disruptions to our supply chains caused by global
health  crises,  such  as  the  COVID-19  pandemic,  international  conflicts  such  as  the  Russian  invasion  of  Ukraine,  economic
instability, or natural disasters;

● regulatory authorities may revise the requirements for approving our product candidates, or such requirements may not be as

we anticipate; and

● our product candidates may have undesirable side effects or other unexpected characteristics, causing us or our investigators,
regulatory authorities, IRBs or ECs to suspend or terminate the trials, or reports may arise from pre-clinical or clinical testing of
other therapies in the same or a similar class that raise safety or efficacy concerns about our product candidates.

We also could encounter delays if a clinical trial is suspended or terminated by us, by the IRBs of the institutions in which such trials
are being conducted, by the Data and Safety Monitoring Board (DSMB) for such trial or by the FDA or other regulatory authorities. Such
regulatory authorities may impose a suspension or termination due to a number of factors, including failure to conduct the clinical trial in
accordance with regulatory requirements or our clinical protocols, inspection of the clinical trial operations or trial site by the FDA or other
regulatory authorities resulting in the imposition of a clinical hold, unforeseen safety issues or adverse side effects, failure to demonstrate a
benefit from using a drug, changes in governmental regulations or administrative actions or lack of adequate funding to continue the clinical
trial.  In  addition  to  the  FDA,  the  DSMB  for  our  clinical  trials  may  recommend  modification  to  the  study  design  or  closure  of  the  study
entirely based on the DSMB’s interpretation of the benefit-risk of the study. While we develop charters that guide the nature of the DSMB
meetings, their analysis and interpretation of study data occurs independently from us and is wholly within their control. Even if the DSMB
finds no safety concerns and recommends no modifications to the ongoing study, this does not mean the safety profile reported in the study
may support a marketing approval or commercial acceptance if marketing approval is granted. Many of the factors that cause, or lead to, a
delay  in  the  commencement  or  completion  of  clinical  trials  may  also  ultimately  lead  to  the  denial  of  regulatory  approval  of  our  product
candidates.

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Negative or inconclusive results from the clinical trials we conduct, unanticipated adverse medical events, or changes in regulatory
policy could cause us to have to repeat or terminate the clinical trials. If we are required to repeat or conduct additional clinical trials or other
testing of our drug candidates beyond those that we currently contemplate, if we are unable to successfully complete clinical trials of our drug
candidates or other testing, if the results of these trials or tests are not positive or are only modestly positive or if there are safety concerns, we
may:

● be delayed in obtaining marketing approval for our product candidates;
● not obtain marketing approval at all;
● obtain marketing approval in some countries and not others;
● obtain approval for indications or patient populations that are not as broad as intended or desired;
● be subject to post-marketing requirements or post-marketing commitments;
● be subject to increased pricing pressure; or
● have the drug removed from the market after obtaining marketing approval.

In addition, changes in regulatory policy could cause us to have to repeat or conduct additional clinical trials or change our clinical
development  strategy.  Our  drug  development  costs  will  also  increase  if  we  experience  delays  in  testing  or  regulatory  approvals.  Certain
clinical trials are designed to continue until a pre-determined number of events have occurred in the patients enrolled. Trials such as this are
subject  to  delays  stemming  from  patient  withdrawal  and  from  lower-than-expected  event  rates.  Significant  clinical  trial  delays  could  also
shorten any periods during which we may have the exclusive right to commercialize our product candidates or allow our competitors to bring
products to market before we do and impair our ability to successfully commercialize our product candidates. Any delays in our pre-clinical
or future clinical development programs may harm our business, financial condition and prospects significantly. We may also incur additional
costs if enrollment is increased.

In addition, principal investigators for our clinical trials may serve as scientific advisors or consultants to us from time to time and
receive  compensation  in  connection  with  such  services.  If  these  relationships  and  any  related  compensation  result  in  perceived  or  actual
conflicts of interest, the integrity of the data generated at the applicable clinical trial site, or the FDA’s willingness to accept such data, may be
jeopardized.

Our product or product candidates may cause undesirable side effects that could delay or prevent their regulatory approval, or impact
their availability and commercial potential after approval.

Unacceptable or undesirable adverse events caused by BRIUMVI or any of our product candidates that we take into clinical trials
could cause either of, a DSMB, or regulatory authorities to interrupt, delay, modify or halt clinical trials and could result in a more restrictive
label  or  the  delay  or  denial  of  regulatory  approval  by  the  FDA  or  other  regulatory  authorities.  This,  in  turn,  could  prevent  us  from
commercializing the affected product candidate and generating revenues from its sale.

As is the case with all drugs, it is likely that there will be side effects associated with the use of our drug candidates. Results of our
trials  could  reveal  a  higher  than  expected  and  unacceptable  severity  and  prevalence  of  side  effects.  In  such  an  event,  our  trials  could  be
suspended or terminated and the FDA or comparable foreign regulatory authorities could order us to cease further development of or deny
approval of our drug candidates for any or all targeted indications. The drug-related side effects could also affect patient recruitment or the
ability of enrolled patients to complete the trial or result in potential product liability claims. In addition, data may emerge, from confirmatory
or  other  post-marketing  studies,  or  from  pharmacovigilance  reporting,  as  products  are  used  more  widely,  or  for  a  longer  duration,  after
approval that may affect the commercial potential of our products. Any of these occurrences may harm our business, financial condition and
prospects significantly.

Many  compounds  that  initially  showed  promise  in  early-stage  testing  have  later  been  found  to  cause  side  effects  that  prevented
further development of the compound. Further, early clinical trials by their nature utilize a small sample of the potential patient population.
With  a  limited  number  of  patients  and  limited  duration  of  exposure,  rare  and  serious  side  effects  of  our  drug  candidates  may  only  be
uncovered when a significantly larger number of patients are exposed to the drug candidate in Phase 3 or registration-directed trials or when
the drug candidate is on the market. If any of our product candidates cause unacceptable adverse events in clinical trials, we may not be able
to  obtain  marketing  approval  and  generate  revenues  from  its  sale,  or  even  if  approved  for  sale  may  lack  differentiation  from  competitive
products, which could have a material adverse impact on our business and operations.

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Any products or product candidates we may advance through clinical development are subject to extensive regulation, which can be costly
and time consuming, cause unanticipated delays or prevent the receipt of the required approvals.

The  clinical  development,  manufacturing,  labeling,  packaging,  storage,  record-keeping,  advertising,  promotion,  import,  export,
marketing and distribution, and pharmacovigilance and adverse event reporting of our product or product candidates or any future product
candidates are subject to extensive regulation by the FDA in the United States and by comparable regulatory authorities worldwide. In the
United States, we are not permitted to market a product candidate until we receive approval of a BLA or NDA from the FDA. The process of
obtaining  a  BLA  or  NDA  approval  is  expensive,  often  takes  many  years,  and  can  vary  substantially  based  upon  the  type,  complexity  and
novelty  of  the  products  involved.  In  addition,  approval  policies  or  regulations  may  change  over  time.  If  we  fail  to  gain  approval  to
commercialize our product candidates from the FDA and other foreign regulatory authorities in the timelines we project or at all, we may be
unable to generate the revenues that we may project or generate revenues at levels sufficient to sustain our business.

The FDA and foreign regulatory authorities have substantial discretion in the pharmaceutical product approval process, including the
ability  to  delay,  limit  or  deny  approval  of  a  product  candidate  for  many  reasons.  During  the  regulatory  review  process,  the  FDA  or  other
regulatory authorities may disagree with or not accept our clinical trial design, may have questions about the potential impact of our study
design on conclusions that can be drawn from the data, may interpret results differently than we do, may apply the results of our trials in one
disease to the review of a regulatory application for a different disease even if the doses and therapeutic areas are distinct, and may change its
view on the criteria that must be met for approval. This could happen even for a protocol that has received a SPA. There is no guarantee that
the FDA will not delay, limit or deny approval of our product candidates in the future.

Furthermore, some of our clinical trials may be conducted as open-label studies, meaning that trial participants, investigators, site
staff,  some  employees  of  our  CROs,  and  our  field-level  employees  (e.g.,  clinical  research  associates  and  monitors),  among  others,  have
knowledge of treatment arm assignments on a patient-level, which has the potential to introduce bias into study conduct. Further, even when
our  clinical  trials  are  double-blind,  double-dummy  studies,  unblinding  of  treatment  arm  assignment  may  occur  from  time  to  time,  for
example, on the occurrence of unexpected safety events which may necessitate understanding of study treatment. While we believe we have
put in place adequate firewalls to prevent inappropriate unblinding of study data consistent with standard industry practice for these types of
studies, no assurance can be given that issues related to study conduct will not be raised. The FDA may raise issues of safety, study conduct,
bias,  deviation  from  the  protocol,  statistical  power,  patient  completion  rates,  changes  in  scientific  or  medical  parameters  or  internal
inconsistencies in the study design or data prior to making its final decision. The FDA may also seek the guidance of an outside advisory
committee  in  evaluating  (among  other  things)  clinical  data  and  safety  and  effectiveness  considerations  prior  to  making  its  final  decision.
These  issues  could  cause  a  delay  in  the  FDA’s  review,  lead  the  FDA  to  deny  approval,  or  lead  the  Company  to  withdraw  a  regulatory
application.

Other  reasons  that  the  FDA  or  regulatory  authorities  around  the  world  may  delay,  limit  or  deny  approval  of  a  product  candidate,

include:

● we  may  be  unable  to  demonstrate  to  the  satisfaction  of  the  FDA  or  comparable  foreign  regulatory  authorities  that  a  product

candidate is tolerable and effective for an indication;

● the FDA may not accept clinical data from trials conducted by individual investigators or in countries where the standard of

care is potentially different from that of the United States;

● the  results  of  clinical  trials  may  not  meet  the  level  of  statistical  significance  required  by  the  FDA  or  comparable  foreign

regulatory authorities for approval;

● we may be unable to demonstrate that a product candidate’s clinical and other benefits outweigh its safety risks;
● the  FDA  or  comparable  foreign  regulatory  authorities  may  disagree  with  our  interpretation  of  data  from  preclinical  studies

and/or clinical trials;

● the data collected from clinical trials of our product candidates may not be sufficient to support the submission of a BLA, NDA

or other marketing authorization submission to obtain regulatory approval in the United States or elsewhere;

● the FDA or comparable foreign regulatory authorities may not approve the manufacturing processes or facilities of third-party
manufacturers with which we or our collaborators currently contract for clinical supplies and plan to contract for commercial
supplies;

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● during  the  course  of  review,  the  FDA  or  foreign  regulatory  authorities  may  raise  issues  and  request  or  require  additional
preclinical,  clinical,  chemistry,  manufacturing,  and  control  (CMC),  or  other  data  and  information,  and  the  development  and
provision of these data and information may be time consuming. We may not be able to generate the data within the time period
necessary  to  obtain  approval  within  the  established  regulatory  review  timelines,  such  as  by  a  PDUFA  goal  date  or  at  all  to
satisfy the FDA or foreign regulatory authorities;

● the  approval  policies  or  regulations  of  the  FDA  or  comparable  foreign  regulatory  authorities  may  significantly  change  in  a

manner rendering our clinical data insufficient for approval; or

● interruptions or delays in the operations of the FDA and foreign regulatory authorities as a result of global health or economic
crises, such as the COVID-19 pandemic, international conflict, or national disasters may negatively impact review, inspection,
and approval timelines.

Even if we succeed in obtaining regulatory approval for a product candidate, the FDA may require post-marketing studies, including
additional  clinical  trials  such  as  those  necessary  to  assess  drug  interactions  or  activity  of  a  product  in  specific  populations,  which  may  be
costly.  The  outcomes  of  post-marketing  studies  may  impact  product  labeling  and  therefore,  there  can  be  no  guarantee  that  the  product
attributes contained in the initial prescribing information will be maintained as future studies produce data. This includes, without limitation,
additional  results  from  studies  evaluating  drug-drug  interactions  and  patients  with  certain  comorbidities  that  may  restrict  the  use  of  an
approved product in select populations or introduce dose modifications or contraindicated concomitant medications that have the potential to
impact the utility of a product or its perceived product profile among prescribers. Post-marketing studies may also lead to the introduction of
new warnings in the product prescribing information. The FDA may require adoption of a REMS program requiring prescriber training or a
post-marketing  registry  or  may  restrict  the  marketing  and  dissemination  of  our  products.  Finally,  failure  to  complete  a  post-marketing
commitment  by  the  applicable  post-marketing  milestone  date  may  lead  to  withdrawal  of  the  product  or  indication.  Any  requirements  to
conduct post-approval studies or fulfill special post-approval requirements could impact our ability to commercialize our product or product
candidates and increase our costs.

A Breakthrough Therapy or Fast Track designation by the FDA may not actually lead to a faster development or regulatory review or
approval process.

We  may  seek  Breakthrough  Therapy  or  Fast  Track  designation  for  some  of  our  drug  candidates.  If  a  drug  is  intended  for  the
treatment  of  a  serious  or  life-threatening  condition,  and  the  drug  demonstrates  the  potential  to  address  an  unmet  medical  need  for  this
condition, the Sponsor may apply for Fast Track designation or Breakthrough Therapy designation, the latter of which has more significant
requirements. The FDA has broad discretion whether or not to grant these designations, so even if we believe a particular drug candidate is
eligible for such a designation, we cannot be sure that the FDA would decide to grant it. Even if we receive Breakthrough Therapy or Fast
Track designation for a drug candidate, we may not experience a faster development process, review or approval compared to conventional
FDA  procedures.  A  drug  that  receives  Fast  Track  designation  is  eligible  for  more  frequent  interactions  with  the  FDA,  priority  review  if
relevant criteria are met, and rolling submission of the BLA or NDA. Even if rolling review is allowed, there is no guarantee that the FDA
will  have  commenced  or  completed  review  of  the  BLA  or  NDA  modules  submitted  earlier  in  the  rolling  review  process.  Neither
Breakthrough Therapy nor Fast Track designation guarantees Priority Review of an NDA or BLA application.

We may seek orphan drug designation for some of our drug candidates. However, we may be unsuccessful in obtaining or may be unable
to maintain the benefits associated with orphan drug designation, including the potential for market exclusivity.

Regulatory  authorities  in  some  jurisdictions,  including  the  United  States,  the  European  Union,  and  the  United  Kingdom,  may
designate drugs for relatively small patient populations as orphan drugs. Under the U.S. Orphan Drug Act, the FDA may designate a drug as
an orphan drug if it is a drug intended to treat a rare disease or condition, which is generally defined as a patient population of fewer than
200,000  individuals  annually  in  the  United  States,  or  a  patient  population  greater  than  200,000  in  the  United  States  where  there  is  no
reasonable expectation that the cost of developing the drug will be recovered from sales in the United States. In the United States, orphan
drug designation entitles a party to financial incentives, such as opportunities for grant funding towards clinical trial costs, tax advantages,
and  user-fee  waivers.  Orphan  drug  designations  are  required  to  be  maintained  through  annual  reporting  and  are  subject  to  re-evaluation.
Based on the evolving data and development plans for our product candidates and changing incidence and prevalence rates for our intended
indications, there can be no guarantee that we will be able to successfully maintain orphan drug designations that we have for certain of our
drug candidates or that we will be successful in obtaining orphan designation for other drug candidates in the future.

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Generally,  if  a  product  with  an  orphan  drug  designation  subsequently  receives  the  first  marketing  approval  for  the  indication  for
which it has such designation, the product is entitled to a period of marketing exclusivity, which precludes FDA or EMA from approving
another marketing application for the same drug or biologic for that time period. Even if we obtain orphan drug exclusivity for a drug, that
exclusivity may not effectively protect the designated drug from competition because different drugs can be approved for the same condition.
Even after an orphan drug is approved, the FDA can subsequently approve another product that meets the definition of a “same drug” under
21 C.F.R. 316.3 for the same condition if the FDA concludes that the later product is clinically superior in that it is shown to be safer, more
effective or makes a major contribution to patient care. In addition, a designated orphan drug may not receive orphan drug exclusivity if it is
approved  for  a  use  that  is  broader  than  the  indication  for  which  it  received  orphan  drug  designation.  Moreover,  orphan  drug  exclusive
marketing rights in the United States may be lost if the FDA exercises its authority to revoke orphan drug designation, which it may do on a
variety of grounds, including that the request contained an untrue statement of material fact or omitted material information, or that the drug
in  fact  was  not  eligible  for  orphan  drug  designation.  Orphan  drug  designation  neither  shortens  the  development  time  or  regulatory  review
time  of  a  drug  nor  gives  the  drug  any  advantage  in  the  regulatory  review  or  approval  process.  While  we  intend  to  seek  orphan  drug
designation for our other drug candidates, we may never receive such designations. Even if we receive orphan drug designation for any of our
drug candidates, there is no guarantee that we will enjoy the benefits of those designations or obtain orphan drug exclusivity. In addition, the
U.S. Orphan Drug Act may be subject to amendments that could reduce the period of marketing exclusivity or change the qualifications for
orphan  drug  designation,  which  could  adversely  impact  our  products  or  product  candidates  that  have  or  may  be  eligible  for  orphan  drug
designation.

We  are  conducting  clinical  trials  and  anticipate  conducting  additional  clinical  trials  for  our  product  and  product  candidates  at  sites
outside  the  United  States,  and  the  FDA  may  not  accept  data  from  trials  conducted  in  such  locations  or  clinical  trial  activities  in  such
locations may be impacted by political conditions, including international conflict.

Many  of  our  Phase  3  and  registration-directed  clinical  trials  across  our  multiple  sclerosis  and  oncology  programs,  including
ULTIMATE I and II and related extension studies, utilize international clinical research sites. We work with what we believe are reputable
CROs and clinical research sites in conducting our studies internationally. Nevertheless, there can be heightened challenges to monitoring and
oversight of global clinical trials and sponsors are subject to the risk that fraud, misconduct, incompetence, unexpected patient variability and
other issues affecting the reliability, quality, and outcome of studies. The geographic variability of the COVID-19 pandemic also introduces
increased risk in the conduct of clinical research in certain countries and territories where vaccination rates and available standard of care
anti-viral  therapy  varies  significantly.  Such  problems,  if  they  were  to  occur,  could  negatively  impact  trial  results,  and  depending  on  the
circumstances and scope of concerns could potentially even prevent a trial from being useful or acceptable for regulatory approval. If such
events  were  to  occur  with  respect  to  any  of  our  trials  (and  in  particular  with  respect  to  registration-directed  studies),  they  would  have  a
substantial negative impact on our business. 

In  addition,  our  clinical  studies  with  sites  outside  the  United  States  may  be  adversely  impacted  by  international  conflict.  For
example,  in  February  2022,  Russia  initiated  a  full-scale  military  invasion  of  Ukraine.  In  one  or  both  countries,  as  well  as  neighboring
countries  that  may  be  impacted  by  this  conflict  (e.g.  Poland,  Slovakia,  Belarus,  Georgia),  we  have  clinical  trial  sites  for  our  RMS  and/or
oncology programs. While no clinical trials are actively enrolling patients in these territories, there are a number of trial subjects in long-term
treatment and follow-up. The political and physical conditions in Russia and Ukraine have disrupted our ability to supply investigational drug
product to impacted sites; impacted patients’ ability to partake in our clinical trials and our ability to gather data on those patients, including
long-term  follow-up  data;  and  resulted  in  suspension  of  clinical  trial  activities  at  impacted  sites.  Furthermore,  the  United  States  and  its
European allies have imposed significant new sanctions against Russia and Belarus, including regional embargoes, full blocking sanctions,
and  other  restrictions  targeting  major  Russian  financial  institutions.  Specifically,  such  sanctions  have  included,  among  other  things,  a
prohibition on doing business with certain Russian companies, officials, and oligarchs; a commitment by certain countries and the European
Union  to  remove  selected  Russian  banks  from  the  Society  for  Worldwide  Interbank  Financial  Telecommunications  (SWIFT)  electronic
banking network that connects banks globally; and restrictive measures to prevent the Russian Central Bank from undermining the impact of
the sanctions. Our ability to conduct clinical trials in Russia, Belarus, Ukraine and elsewhere in the region may also become restricted under
applicable sanctions laws. The conflict, as well as government responses, has resulted in global economic instability, which could affect our
supply chain and commercialization efforts. While we do not believe this conflict will have a material impact on product development or our
overall business, given the rapidly evolving situation and the potential to expand beyond Ukraine and Russia, the full impact of the conflict
remains uncertain.

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Approval of one of our product candidates in the United States would not assure approval of that candidate in foreign jurisdictions.

We intend to seek product approvals in certain countries outside of the United States. The approval procedures for pharmaceuticals
vary among countries and obtaining approval in one jurisdiction does not guarantee approval in another jurisdiction. For example, even if the
FDA grants approval of a product candidate, comparable regulatory authorities in foreign jurisdictions may not approve the same product
candidate  or  may  require  additional  evidence  for  approval.  The  time  required  to  obtain  approval  in  other  countries  might  differ  from  that
required to obtain FDA approval. In many countries outside the United States, the product must be approved for reimbursement before it can
be marketed. As a general matter, however, the foreign regulatory approval process involves a lengthy and challenging process with risks
similar  or  identical  to  the  risks  associated  with  the  FDA  approval  discussed  above.  Therefore,  we  cannot  guarantee  that  we,  or  future
collaborators, will obtain approvals of our product and product candidates in any foreign jurisdiction on a timely basis, if at all. Failure to
receive approval in certain foreign markets could significantly impact the full market potential of our product and product candidates and
may  negatively  impact  the  regulatory  process  in  other  countries.  Furthermore,  if  we  obtain  regulatory  approval  for  a  product  or  product
candidate in a foreign jurisdiction, we will be subject to the burden of complying with complex regulatory, legal, and other requirements that
could be costly and could subject us to additional risks and uncertainties.

We  have  product  candidates  still  under  development  and  are  also  engaging  manufacturing  partners  in  commercial  manufacturing
activities, and as such clinical and commercial manufacturing site additions and process improvements implemented in the production of
our product and product candidates may affect their timely delivery or quality.

We  have  limited  experience  in  manufacturing  products  for  clinical  or  commercial  purposes.  We  currently  do  not  have  any
manufacturing capabilities of our own. We have established a contract manufacturing relationship for the commercial supply of BRIUMVI
with Samsung Biologics. As with any supply program, obtaining materials of sufficient quality and quantity to meet the requirements of the
market demand for BRIUMVI and our development programs cannot be guaranteed and we cannot ensure that we will be successful in these
endeavors.

To  the  extent  possible  and  commercially  practicable,  we  plan  to  develop  back-up  strategies  for  raw  materials,  manufacturing  and
testing services for our commercial products. Given the long lead times and cost of establishing additional commercial manufacturing sites
we  expect  that  we  will  rely  on  single  contract  manufacturers  to  produce  our  commercial  products  under  current  Good  Manufacturing
Practice,  or  cGMP,  regulations  for  many  years.  Our  commercial  manufacturing  partners  have  a  limited  number  of  facilities  in  which  our
product  candidates  can  be  produced  and  will  have  limited  experience  in  manufacturing  our  product  candidates  in  quantities  sufficient  for
commercialization.  Our  third-party  manufacturers  will  have  other  clients  and  may  have  other  priorities  that  could  affect  their  ability  to
perform the work satisfactorily and/or on a timely basis. Both of these occurrences would be beyond our control.  

We expect to similarly rely on contract manufacturing relationships for our development programs and any products that we may in-
license or acquire in the future. However, there can be no assurance that we will be able to successfully contract with such manufacturers on
terms acceptable to us, or at all.

Contract  manufacturers  are  subject  to  ongoing  periodic  and  unannounced  inspections  by  the  FDA,  the  Drug  Enforcement
Administration if applicable, and corresponding state agencies to ensure strict compliance with cGMP and other state and federal regulations.
Where  manufactured  products  are  globally  registered,  similar  regulatory  inspection  burdens  are  applicable  from  each  and  every  marketed
territory.  If  our  manufacturing  partners  are  inspected  and  deemed  out  of  compliance  with  cGMPs,  product  recalls  could  result,  inventory
could be destroyed, production could be stopped, and supplies could be delayed or otherwise disrupted.

If  we  need  to  change  manufacturers  either  before  or  after  commercialization,  the  FDA  and  corresponding  foreign  regulatory
agencies  may  need  to  approve  these  new  manufacturers  in  advance,  which  will  involve  testing,  regulatory  submissions,  and  additional
inspections  to  ensure  compliance  with  FDA  regulations  and  standards  and  may  require  significant  lead  times  and  delay.  Furthermore,
switching manufacturers may be difficult because the number of potential manufacturers is limited. It may be difficult or impossible for us to
find a replacement manufacturer quickly or on terms acceptable to us, or at all.

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Some of our product and product candidates are currently manufactured in relatively small batches for use in pre-clinical and clinical
studies. Process improvements implemented to date have changed, and process improvements in the future may change, the activity and/or
analytical profile of the product or product candidates, which may affect the safety and efficacy of the products. It is possible that additional
and/or different adverse events may appear among patients exposed to drug product manufactured under one process compared to the other,
or that adverse events may arise with greater frequency, intensity and duration among patients exposed to drug product manufactured under
one process compared to the other.

Further, no assurance can be given that the material manufactured from any future optimized processes, if any, for ublituximab or
any of our product candidates will perform comparably to the product or product candidates as manufactured to date which could result in an
unexpected safety or efficacy outcome as compared to the data published or presented to date. Similarly, following each round of process
improvements,  if  any,  for  any  of  our  drug  candidates,  future  clinical  trial  results  conducted  with  the  new  material  will  be  subject  to
uncertainty related to the effects, if any, of those additional process improvements that were made.

Risks Related to Governmental Regulation of Pharmaceutical Industry and Legal Compliance Matters

We are subject to new legislation, regulatory proposals and third-party payor initiatives that may increase our costs of compliance and
adversely affect our ability to market our products, obtain collaborators and raise capital.

 In both the United States and certain foreign countries, there have been a number of legislative and regulatory changes or proposed
changes to the healthcare system, many of which have focused on prescription drug pricing and lowering overall healthcare costs, that could
impact our ability to sell our products profitably and support future innovation. We expect prescription drug pricing and other healthcare costs
to continue to be subject to intense political and social pressures on a global basis.

In  the  United  States,  the  President,  federal  and  state  legislatures,  health  agencies  and  third-party  payors  continue  to  focus  on
containing the cost of healthcare and addressing public concern over access and affordability of prescription drugs. The Patient Protection
and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act of 2010 (collectively, the ACA) was enacted in
2010 and made significant changes to the U.S. healthcare system. ACA changes included expanding healthcare coverage through Medicaid
expansion  and  implementation  of  the  individual  health  insurance  mandate;  changing  coverage  and  reimbursement  of  drug  products  under
government  healthcare  programs;  imposing  an  annual  fee  on  manufacturers  of  branded  drugs;  and  expanding  government  enforcement
authority. Although the ACA has been the subject of a number of legislative and litigation challenges since it passed, it is expected that the
Biden Administration will seek to strengthen and expand the ACA. We cannot predict what effect further changes to the ACA would have on
our business.

Beyond the ACA, there has been increasing legislative, regulatory and enforcement interest with respect to prescription drug pricing
practices. Proposals that may garner bipartisan legislative support or become legislation through reconciliation include adding a cap on out-
of-pocket spending under Medicare Part D, authorizing Medicare to negotiate certain drugs covered by Medicare Parts D and B directly with
manufacturers, and imposing limits on increases in drug prices. In addition, President Biden may take executive action to introduce new drug
pricing  models  and  other  drug  pricing  initiatives.  The  Biden  Administration  also  may  propose  substantial  changes  to  the  U.S.  healthcare
system, including expanding government-funded health insurance options. We are uncertain of the impact or outcome of potential Executive
Orders, rescission of rules and policy statements, or new legislation, especially any relative impact on the healthcare regulatory and policy
landscape, or the impact they may have on our business. We expect drug pricing will continue to be a focus of the Biden Administration. At
the  state  level,  legislatures  have  increasingly  passed  legislation  and  implemented  regulations  designed  to  control  pharmaceutical  pricing,
including  price  or  patient  reimbursement  constraints,  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.

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There  have  been  several  recent  U.S.  Congressional  inquiries  and  proposed  and  enacted  legislation  designed  to  bring  more
transparency to drug pricing, reduce the cost of prescription drugs under Medicare, limit price increases, evaluate the relationship between
pricing and manufacturer patient programs, and reform government health care program reimbursement methodologies for prescription drugs.
For example, the Bipartisan Budget Act of 2018 (the BBA) increased manufacturer point-of-sale discounts off negotiated prices of applicable
brand drugs in the Medicare Part D coverage gap from 50% to 70% effective as of January 1, 2019, ultimately increasing the liability for
brand  drug  manufacturers.  We  expect  that  health  care  reform  measures  that  may  be  adopted  in  the  future,  may  result  in  more  rigorous
coverage criteria, increase manufactured financial liability, and additional downward pressure on the price that we may receive for any of our
product candidates, if approved. Any reduction in reimbursement from Medicare or other government health care programs may result in a
similar reduction in payments from private payors.

There continue to be efforts to lower drug prices through increased competition, with policy proposals seeking to facilitate generic
and biosimilar approval and marketing authorization. For example, in 2018, the FDA announced the Biosimilar Action Plan and sought input
on how the agency can best facilitate greater availability of biosimilar products, including input on whether changes to an approved biologic
(e.g., a new indication) would be protected by the remainder of the statutory 12-year exclusivity period (commonly referred to as umbrella
exclusivity).  In  the  event  there  is  a  modification  to  the  biologic  exclusivity  period  or  other  steps  taken  to  facilitate  biosimilar  or  generic
approvals, we could experience biosimilar/generic competition of any products for which we receive FDA approval at an earlier time than
currently anticipated.

Most recently, on August 16, 2022, President Biden signed into law the Inflation Reduction Act of 2022 (the Act), which, among
other provisions, included several measures intended to lower the cost of prescription drugs and related healthcare reforms. Specifically, the
Act authorizes and directs the Department of Health and Human Services (the DHHS) to set drug price caps for certain high-cost Medicare
Part B and Part D qualified drugs, with the initial list of drugs to be selected by September 1, 2023, and the first year of maximum price
applicability  to  begin  in  2026.  The  Act  further  authorizes  the  DHHS  to  penalize  pharmaceutical  manufacturers  that  increase  the  price  of
certain Medicare Part B and Part D drugs faster than the rate of inflation. Finally, the Act creates significant changes to the Medicare Part D
benefit  design  by  capping  Part  D  beneficiaries’  annual  out-of-pocket  spending  at  $2,000  beginning  in  2025.  We  cannot  be  sure  whether
additional or related legislation or rulemaking will be issued or enacted, or what impact, if any, such changes will have on the profitability of
any of our drug candidates, if approved for commercial use, in the future.

At  the  state  level,  individual  states  are  experiencing  significant  economic  pressure  within  their  state  Medicaid  programs  and
responding  to  public  concern  over  the  cost  of  healthcare.  States,  including  California,  Florida,  Nevada  and  Maine,  among  others,  have
responded to these pressures with a range of legislative enactments and policy proposals designed to control prescription drug prices by, for
example,  allowing  importation  of  pharmaceutical  products  from  jurisdictions  outside  the  U.S.,  imposing  price  controls  on  state  drug
purchases, consolidating state drug purchasing to a single purchaser, and imposing transparency measures around prescription drug prices and
marketing costs. These measures, which vary by state, could reduce the ultimate demand for our products, if approved, or put pressure on our
product pricing.

In addition, other legislative changes have been adopted that could have an adverse effect upon, and could prevent, our products’ or
product candidates’ commercial success. More broadly, the Budget Control Act of 2011, as amended, or the Budget Control Act, includes
provisions intended to reduce the federal deficit, including reductions in Medicare payments to providers through 2030 (except May 1, 2020
to  December  31,  2020).  Any  significant  spending  reductions  affecting  Medicare,  Medicaid  or  other  publicly  funded  or  subsidized  health
programs,  or  any  significant  taxes  or  fees  imposed  as  part  of  any  broader  deficit  reduction  effort  or  legislative  replacement  to  the  Budget
Control Act, or otherwise, could have an adverse impact on our anticipated product revenues.

Furthermore, legislative and regulatory proposals have been made to expand post-approval requirements, make changes the Orphan
Drug  Act  and  related  guidance,  and  restrict  sales  and  promotional  activities  for  drugs.  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 of our product candidates, if any, may be. In addition, increased scrutiny by 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 testing and
other requirements.

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In  many  international  markets,  including  the  European  Union,  the  government  regulates  prescription  drug  prices,  patient  access,
and/or reimbursement levels to control the biopharmaceutical budget of their government-sponsored healthcare system. The European Union
and some individual countries have announced or implemented measures and may in the future implement new or additional measures, to
reduce  biopharmaceutical  costs  to  contain  the  overall  level  of  healthcare  expenditures.  These  measures  vary  by  country  and  may  include,
among other things, non-coverage decisions, patient access restrictions, international price referencing, mandatory discounts or rebates, and
cross-border sales of prescription drugs. These measures may adversely affect our ability to generate revenues or commercialize our product
or product candidates in certain international markets.

There likely will continue to be pressure on prescription drug prices globally and legislative and regulatory proposals, including at
the federal and state levels in the U.S., directed at broadening the availability of health care and containing or lowering the cost of health care
products and services. We cannot predict the initiatives that may be adopted in the future. The continuing efforts of the government, health
insurance  companies,  managed  care  organizations  and  other  payors  of  health  care  services  to  contain  or  reduce  costs  of  health  care  may
adversely affect, among other things:

● our ability to generate revenues and achieve or maintain profitability;
● the demand for any products for which we may obtain regulatory approval;
● our ability to set a price that we believe is fair for our products;
● the level of taxes that we are required to pay; and
● the availability of capital.

In addition, governments may impose price controls, which may adversely affect our future profitability.

Our  relationships  with  customers  and  third-party  payors  will  be  subject  to  applicable  fraud  and  abuse  laws,  false  claims  laws,
transparency and disclosure laws, health information and security laws, and other healthcare laws and regulations, which could expose
us to criminal sanctions, civil penalties, exclusion from government healthcare programs, contractual damages, reputational harm and
diminished profits and future earnings.

With the FDA approval of BRIUMVI in December 2022, we are subject to additional extensive healthcare statutory and regulatory
requirements and oversight by the federal government and the states and foreign governments in which we conduct our business. Healthcare
providers  and  third-party  payors  play  a  primary  role  in  the  recommendation  and  prescription  of  any  drug  candidates  for  which  we  obtain
marketing approval. Our past, current and future relationships, arrangements and interactions with these professionals and entities, as well as
with  patients  and  patient  advocacy  organizations  will  expose  us  to  broadly  applicable  fraud  and  abuse  and  other  healthcare  laws  and
regulations that may constrain the business or financial arrangements and relationships through which we market, sell and distribute our drug
candidates for which we obtain marketing approval. Restrictions under applicable federal and state healthcare laws and regulations include
the following:

● the  federal  Anti-Kickback  Statute  prohibits,  among  other  things,  persons  from  knowingly  and  willfully  soliciting,  offering,
receiving  or  providing  remuneration,  directly  or  indirectly,  in  cash  or  in  kind,  to  induce  or  reward  either  the  referral  of  an
individual  for,  or  the  purchase,  order  or  recommendation  of,  any  good  or  service,  for  which  payment  may  be  made  under
federal  and  state  healthcare  programs  such  as  Medicare  and  Medicaid.  A  person  or  entity  does  not  need  to  have  actual
knowledge of the statute or specific intent to violate it in order to have committed a violation;

● the  federal  False  Claims  Act  imposes  civil  penalties,  including  through  civil  whistleblower  or  qui  tam  actions,  against
individuals  or  entities  for,  among  other  things,  knowingly  presenting,  or  causing  to  be  presented,  to  the  federal  government,
claims for payment that are false or fraudulent or making a false statement to avoid, decrease or conceal an obligation to pay
money to the federal government. In addition, the government may assert that a claim including items and services resulting
from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the False Claims
Act;

● the  federal  Health  Insurance  Portability  and  Accountability  Act  of  1996  (HIPAA)  imposes  criminal  and  civil  liability  for
executing a scheme to defraud any healthcare benefit program, or knowingly and willfully falsifying, concealing or covering up
a material fact or making any materially false statement in connection with the delivery of or payment for healthcare benefits,
items or services; similar to the federal Anti-Kickback Statute, a person or entity does not need to have actual knowledge of the
statute or specific intent to violate it in order to have committed a violation;

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● the  so-called  federal  “Sunshine  Act”  under  the  Affordable  Care  Act  requires  manufacturers  of  drugs,  devices,  biologics  and
medical supplies that are reimbursable under Medicare, Medicaid, or the Children’s Health Insurance Program to monitor and
report information related to payments and other transfers of value to and the ownership and investment interests of physicians
and  teaching  hospitals  (and  additional  categories  of  healthcare  providers  beginning  with  reports  submitted  in  2022)  to  the
federal government for redisclosure to the public;

● HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act of 2009 and its implementing
regulations,  which  also  imposes  obligations  on  certain  covered  entity  healthcare  providers,  health  plans,  and  healthcare
clearinghouses as well as their business associates that perform certain services involving the use or disclosure of individually
identifiable health information, including mandatory contractual terms, with respect to safeguarding the privacy, security and
transmission of individually identifiable health information;

● a  wide  range  of  federal  and  state  consumer  protection  and  unfair  competition  laws,  which  broadly  regulate  marketplace

activities and activities that potentially harm consumers including those related to privacy;

● the Federal Food, Drug, and Cosmetic Act and its implementing regulations, which among other things, strictly regulate drug
product  marketing  and  prohibit  manufacturers  from  promotion  and  marketing  of  products  prior  to  approval  or  for  uses
inconsistent with the FDA-required labeling;

● federal  laws,  including  the  Medicaid  Drug  Rebate  Program,  that  require  pharmaceutical  manufacturers  to  report  certain
calculated product prices to the government or provide certain discounts or rebates to government authorities or private entities,
often as a condition of reimbursement under government healthcare programs;

● the Drug Supply Chain Security Act (DSCSA), which imposes obligations on entities in the commercial product supply chain,

including manufacturers, to identify and track prescription drugs as they are distributed in the U.S.; and

● state law equivalents of some of the above federal laws, such as anti-kickback and false claims laws that may apply to items or
services  reimbursed  by  any  third-party  payor,  including  commercial  insurers,  state  transparency  laws,  state  laws  limiting
interactions  between  pharmaceutical  manufacturers  and  members  of  the  healthcare  industry,  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 federal laws, thus complicating compliance efforts.

As we continue commercialization of BRIUMVI, we are taking steps to provide patient support services to help patients access the
product.  Our  patient  support  program  will  be  administered  in  conjunction  with  a  patient  support  program  vendor  and  other  third  parties.
There has been heightened governmental scrutiny over the scope of patient support programs and the manner in which drug manufacturers
and their vendors operate such programs. We cannot ensure that our compliance controls, policies, and procedures will be sufficient to protect
against  acts  of  our  employees,  business  partners  or  vendors  that  may  violate  the  laws,  regulations,  or  evolving  government  guidance  on
patient support programs. A government investigation, regardless of its outcome, could impact our business practices, harm our reputation,
divert attention of management, increase our expenses and reduce availability of assistance to patients. If we or our vendors are deemed to
fail to comply with relevant laws, regulations or government guidance in the operation of these programs, we could be subject to damages,
fines, penalties or other criminal, civil or administrative sanctions or enforcement actions.

Ensuring  that  our  business  arrangements  with  third  parties  comply  with  applicable  healthcare  laws  and  regulations  involves
substantial costs. It is possible that governmental authorities will 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.  The  compliance  and
enforcement landscape, and related risk, is informed by government enforcement precedent and settlement history, Advisory Opinions, and
Special Fraud Alerts. Our approach to compliance may evolve over time in light of these types of developments. Additionally, the potential
safe harbors available under the Anti-Kickback Statute are subject to change through legislative and regulatory action, and we may decide to
adjust our business practices or be subject to heightened scrutiny as a result. If our operations, including activities to be conducted by our
sales team, were to be found to be in violation of 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,  exclusion  from  government-funded  healthcare  programs,
such as Medicare and Medicaid, qui tam actions brought by individual whistleblowers in the name of the government, and the curtailment or
restructuring of our operations.

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If we violate applicable data privacy and security laws, we may be subject to penalties, including civil and criminal penalties, damages,
fines and the curtailment or restructuring of our operations.

We  may  be  subject  to  privacy  and  security  laws  in  the  various  jurisdictions  in  which  we  operate,  obtain  or  store  personal
information. The legislative and regulatory landscape for privacy and data protection continues to evolve, and there has been an increasing
focus on privacy and data protection issues with the potential to affect our business.

Within the United States, various federal and state laws regulate the privacy and security of personal information and so may affect
our  business  operations.  For  example,  at  the  federal  level,  our  operations  may  be  affected  by  the  data  privacy  and  security  provisions  of
HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act and its implementing regulations. HIPAA
affects the ability of healthcare providers and other entities with which we may interact, including clinical trial sites, to disclose patient health
information  to  us.  Under  Section  5(a)  of  the  Federal  Trade  Commission  Act  (the  FTCA),  the  FTC  expects  a  company’s  data  security
measures to be reasonable and appropriate in light of the sensitivity and volume of consumer information it holds, the size and complexity of
its  business,  and  the  cost  of  available  tools  to  improve  security  and  reduce  vulnerabilities.  Medical  data  is  considered  sensitive  data  that
merits stronger safeguards. States may also impose requirements, for example the California Consumer Privacy Act (the CCPA), went into
effect in January 2020 creating data privacy obligations for covered companies and providing privacy rights to California residents, including
the  right  to  opt  out  of  certain  disclosures  of  their  information.  Colorado,  Connecticut,  Utah  and  Virginia  have  also  enacted  data  privacy
statutes,  and  both  California  and  Colorado  are  also  undergoing  rulemaking  procedures  to  finalize  regulatory  regimes  to  supplement  their
privacy statutes.

Numerous  other  jurisdictions  regulate  the  privacy  and  security  of  personally  identifiable  data.  For  example,  the  processing  of
personal data in the European Economic Area (the EEA), is subject to the General Data Protection Regulation (GDPR), which took effect in
May 2018. The GDPR increases obligations with respect to clinical trials conducted in the EEA, such as in relation to the provision of fair
processing notices, exercising data subject rights and reporting certain data breaches to regulators and affected individuals, as well as how we
document our relationships with third parties that process GDPR-covered personal data on our behalf. The GDPR also increases the scrutiny
applied  to  transfers  of  personal  data  from  the  EEA  (including  from  clinical  trial  sites  in  the  EEA)  to  countries  that  are  considered  by  the
European  Commission  to  lack  an  adequate  level  of  data  protection,  such  as  the  United  States.  In  July  2020,  the  Court  of  Justice  of  the
European Union invalidated the EU-U.S. Privacy Shield framework, one of the mechanisms used to legitimize the transfer of personal data
from the EEA to the U.S., which decision may lead to increased scrutiny on data transfers from the EEA to the U.S. generally and increase
our costs of compliance with data privacy legislation.

If our operations are found to be in violation of any data privacy and security laws, rules or regulations that apply to us, we may be
subject to penalties, including civil and criminal penalties, damages, fines and the curtailment or restructuring of our operations, which could
adversely  affect  our  ability  to  operate  our  business  and  our  financial  results.  Although  compliance  programs  can  mitigate  the  risk  of
investigation and prosecution for violations of these laws, rules or regulations, we cannot be certain that our program will address all areas of
potential  exposure  and  the  risks  in  this  area  cannot  be  entirely  eliminated,  particularly  because  the  requirements  and  government
interpretations  of  the  requirements  in  this  space  are  constantly  evolving.  Any  action  against  us  for  violation  of  these  laws,  rules  or
regulations,  even  if  we  successfully  defend  against  it,  could  cause  us  to  incur  significant  legal  expenses  and  divert  our  management’s
attention from the operation of our business, as well as damage our business or reputation. Moreover, achieving and sustaining compliance
with applicable federal and state privacy, security, fraud and reporting laws may prove costly.

If  we  fail  to  adequately  understand  and  comply  with  the  local  laws  and  customs  as  we  expand  into  new  international  markets,  these
operations may incur losses or otherwise adversely affect our business and results of operations.

We expect to operate a portion of our business in certain countries through subsidiaries or through supply, marketing, and distributor
arrangements. In those countries where we have limited experience in operating subsidiaries and in reviewing equity investees, we will be
subject to additional risks related to complying with a wide variety of national and local laws, including restrictions on the import and export
of certain intermediates, drugs, technologies and multiple and possibly overlapping tax laws. In addition, we may face competition in certain
countries from companies that may have more experience with operations in such countries or with international operations generally. We
may also face difficulties integrating new facilities in different countries into our existing operations, as well as integrating employees hired
in  different  countries  into  our  existing  corporate  culture.  If  we  do  not  effectively  manage  our  operations  in  these  subsidiaries  and  review
equity  investees  effectively,  or  if  we  fail  to  manage  our  alliances,  we  may  lose  money  in  these  countries,  and  it  may  adversely  affect  our
business and results of our operations. In all interactions with foreign regulatory authorities and other government agencies, we are exposed
to liability risks under the Foreign Corrupt Practices Act or similar anti-bribery laws.

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Any  product  for  which  we  obtain  marketing  approval,  including  BRIUMVI,  could  be  subject  to  restrictions  or  withdrawal  from  the
market and we may be subject to penalties if we fail to comply with regulatory requirements or if we experience unanticipated problems
with products.

Any regulatory approvals that we receive for our drug candidates may be subject to limitations on the indicated uses for which the
drug may be marketed or to conditions of approval that may require potentially costly post-marketing clinical trials or surveillance to monitor
safety and efficacy of the drug candidate. In addition, any product for which we obtain marketing approval, along with the manufacturing
processes  and  facilities,  post-approval  clinical  data,  labeling,  advertising  and  promotional  activities  for  such  product,  will  be  subject  to
continual requirements of, and review by, the FDA and comparable regulatory authorities. These requirements include submissions of safety
and  other  post-marketing  information  and  reports,  registration  requirements,  current  Good  Manufacturing  Practice  (cGMP)  requirements
relating  to  quality  control,  quality  assurance  and  corresponding  maintenance  of  records  and  documents,  and  requirements  regarding
promotional interactions with healthcare professionals.

Failure  to  comply  with  these  regulatory  requirements  or  later  discovery  of  previously  unknown  problems  with  products,

manufacturers, or manufacturing processes, may result in actions such as:

● restrictions on product manufacturing, distribution or use;
● restrictions on the labeling or marketing of a product;
● requirements to conduct post-marketing studies or clinical trials;
● warning letters;
● withdrawal of the products from the market;
● refusal to approve pending applications or supplements to approved applications that we or our subsidiaries submit;
● recalls;
● suspension or termination of ongoing clinical trials;
● fines, restitutions, or disgorgement of profits or revenues;
● refusal to permit the import or export of products;
● product seizure or detentions;
● injunctions or the imposition of civil or criminal penalties; and
● adverse publicity.

Any government investigation of alleged violations of law could require us to expend significant time and resources in response and
could  generate  negative  publicity.  In  addition,  the  FDA’s  regulations,  policies  or  guidance  may  change  and  new  or  additional  statutes  or
government  regulations  may  be  enacted  that  could  prevent  or  delay  regulatory  approval  of  our  product  candidates  or  further  restrict  or
regulate  post-approval  activities.  We  also  cannot  predict  the  likelihood,  nature,  or  extent  of  adverse  government  regulation  that  may  arise
from pending or future legislation or administrative action, either in the United States or abroad.

If we, or our respective suppliers, third-party contractors, clinical investigators or collaborators are slow to adapt, or are unable to
adapt,  to  changes  in  existing  regulatory  requirements  or  adoption  of  new  regulatory  requirements  or  policies,  we,  our  subsidiaries,  or  our
respective collaborators may be subject to the actions listed above, including losing marketing approval for products, resulting in decreased
revenue from milestones, product sales or royalties.

If we or any of our contract manufacturers and suppliers fail to comply with environmental, health and safety laws and regulations, we
could become subject to fines or penalties or incur costs that could seriously harm our business.

Our  third-party  manufacturers,  suppliers,  and  we  are  subject  to  federal,  state,  and  local  laws  and  regulations  governing  the  use,
manufacture,  storage,  handling,  release,  disposal  of,  and  exposure  to,  hazardous  and  regulated  materials.  Violation  of  these  laws  and
regulations  could  lead  to  substantial  fines  and  penalties.  Although  we  believe  that  our  safety  procedures,  and  those  of  our  third-party
manufacturers, for handling and disposing of these materials comply with the standards prescribed by these laws and regulations, we cannot
eliminate  the  risk  of  accidental  contamination  or  injury  from  these  materials.  In  the  event  of  an  accident,  state  or  federal  authorities  may
curtail our use of these materials and interrupt our business operations. In addition, we could become subject to potentially material liabilities
relating to the investigation and cleanup of any contamination, whether currently unknown or caused by future releases.

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Risks Related to Our Dependence on Third Parties

We rely on third parties to generate clinical, preclinical and other data necessary to support the regulatory applications needed to conduct
clinical trials and submit for marketing approval. We rely on third parties to help conduct our planned clinical trials. If these third parties
do not perform their services as required, we may not be able to obtain regulatory approval for or commercialize our product or product
candidates when expected or at all.

In order to submit an IND, BLA, or NDA to the FDA and maintain these applications, it is necessary to submit all information on
the  clinical,  non-clinical,  chemistry,  manufacturing,  controls  and  quality  aspects  of  the  product  candidate.  Clinical  trial  applications  and
marketing  authorization  applications  for  foreign  regulatory  bodies  have  substantially  similar  requirements.  We  rely  on  our  third-party
contractors and our licensing partners to provide portions of this data. If we are unable to obtain this data, or the data is not sufficient to meet
the regulatory requirements, we may experience significant delays in our development programs and commercialization efforts.

Additionally, we use CROs to assist in the conduct of our current clinical trials and expect to use such services for future clinical
trials  and  we  rely  upon  medical  institutions,  clinical  investigators  and  contract  laboratories  to  conduct  our  trials  in  accordance  with  our
clinical protocols and appropriate regulations. Our current and future CROs, investigators and other third parties play a significant role in the
conduct  of  our  trials  and  the  subsequent  collection  and  analysis  of  data  from  the  clinical  trials.  There  is  no  guarantee  that  any  CROs,
investigators and other third parties will devote adequate time and resources to our clinical trials or perform as contractually required. If any
third  parties  upon  whom  we  rely  for  administration  and  conduct  of  our  clinical  trials  fail  to  meet  expected  deadlines,  fail  to  adhere  to  its
clinical protocols or otherwise perform in a substandard manner, our clinical trials may be extended, delayed or terminated, and we may not
be able to commercialize our product or product candidates. In addition to the third parties identified above, we are also heavily reliant on the
conduct of our patients enrolled to our studies by our third-party investigators. We rely on our clinical trial sites and investigators to properly
identify and screen eligible candidates for our clinical trials, and for them to ensure participants adhere to our clinical protocol requirements.
The  majority  of  our  clinical  trial  conduct  occurs  in  the  outpatient  setting,  where  patients  are  expected  to  continue  to  adhere  to  our  study
protocol specified requirements. The ability of our enrolled patients to properly identify, document, and report adverse events; take protocol
specified  study  drugs  at  the  correct  quantity,  time,  and  setting,  as  applicable;  avoid  contraindicated  medications;  and  comply  with  other
protocol specified procedures such as returning to the trial site for scheduled laboratory and disease assessments, is wholly out of our control.
Deviations  from  protocol  procedures,  such  as  those  identified  previously,  could  materially  affect  the  quality  of  our  clinical  trial  data,  and
therefore ultimately affect our ability to develop and commercialize our drug candidates. If any of our clinical trial sites terminates for any
reason, we may experience the loss of follow-up information on patients enrolled in our ongoing clinical trials unless we are able to transfer
the care of those patients to another qualified clinical trial site. If any of our clinical trial sites is required by the FDA or IRB to close down
due to data management or patient management or any other issues, we may lose clinical trial subjects.

Whether conducted through a CRO or through our internal staff, we are solely responsible for ensuring that each of our clinical trials
is conducted in accordance with the applicable protocol, legal and regulatory requirements and scientific standards, and our reliance on CROs
will not relieve us of our regulatory responsibilities. For any violations of laws and regulations during the conduct of our clinical trials, we
could be subject to warning letters or other enforcement actions that may include civil penalties or criminal prosecution. We and our CROs
are required to comply with regulations, including GCP guidelines for conducting, monitoring, recording and reporting the results of clinical
trials  to  ensure  that  the  data  and  results  are  scientifically  credible  and  accurate,  and  that  the  trial  patients  are  adequately  informed  of  the
potential  risks  of  participating  in  clinical  trials  and  their  rights  are  protected.  These  regulations  are  enforced  by  the  FDA,  the  Competent
Authorities of the Member States of the European Economic Area and comparable foreign regulatory authorities for any drug candidates in
clinical development. The FDA enforces GCP regulations through periodic inspections of clinical trial sponsors, clinical investigators, CROs,
institutional  review  boards,  and  non-clinical  laboratories.  If  we,  our  CROs,  our  investigators  or  other  third  parties  fail  to  comply  with
applicable GCPs, the clinical data generated in our clinical trials may be deemed unreliable and the FDA or comparable foreign regulatory
authorities may require us to perform additional clinical trials before approving our marketing applications. We cannot assure you that, upon
inspection,  the  FDA  will  determine  that  our  current  or  future  clinical  trials  comply  with  GCPs.  In  addition,  our  clinical  trials  must  be
conducted with drug candidates produced under cGMP regulations. Our failure or the failure of our CROs or CMOs to comply with these
regulations  may  require  us  to  repeat  clinical  trials,  which  would  delay  the  regulatory  approval  process  and  could  also  subject  us  to
enforcement  action.  We  also  are  required  to  register  most  ongoing  clinical  trials  and  post  the  results  of  completed  clinical  trials  on
government-sponsored databases, e.g., ClinicalTrials.gov, within certain timeframes. Failure to do so can result in fines, adverse publicity and
civil and criminal sanctions.

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CROs play an important role in the conduct of our clinical trials, especially outside of the United States. As a result, many important
aspects of our development programs, including their conduct and timing, will be outside of our direct control. Our reliance on third parties to
conduct current or future clinical trials will also result in less direct control over the management of data developed through clinical trials
than  would  be  the  case  if  we  were  relying  entirely  upon  our  own  staff.  Communicating  with  outside  parties  can  also  be  challenging,
potentially leading to mistakes as well as difficulties in coordinating activities. Outside parties may:

● have staffing difficulties;
● fail to comply with contractual obligations;
● experience regulatory compliance issues;
● undergo changes in priorities or become financially distressed; or
● form relationships with other entities, some of which may be our competitors.

These factors may materially adversely affect the willingness or ability of third parties to conduct our clinical trials and may subject
us to unexpected cost increases that are beyond our control. If the CROs do not perform clinical trials in a satisfactory manner, breach their
obligations to us or fail to comply with regulatory requirements, the development, regulatory approval and commercialization of our drug
candidates may be delayed, we may not be able to obtain regulatory approval and commercialize our drug candidates, or our development
program may be materially and irreversibly harmed. If we are unable to rely on clinical data collected by our CROs, we could be required to
repeat, extend the duration of, or increase the size of any clinical trials we conduct, and this could significantly delay commercialization and
require significantly greater expenditures.

If any of our relationships with these third-party CROs terminate, we may not be able to enter into arrangements with alternative
CROs. If CROs do not successfully carry out their contractual duties or obligations or meet expected deadlines, if they need to be replaced or
if  the  quality  or  accuracy  of  the  clinical  data  they  obtain  is  compromised  due  to  the  failure  to  adhere  to  our  clinical  protocols,  regulatory
requirements or for other reasons, any clinical trials such CROs are associated with may be extended, delayed or terminated, and we may not
be able to obtain regulatory approval for or successfully commercialize our product or product candidates. As a result, we believe that our
financial  results  and  the  commercial  prospects  for  our  product  or  product  candidates  in  the  subject  indication  would  be  harmed,  our  costs
could increase and our ability to generate revenue could be delayed.

We contract with third parties for the manufacture of BRIUMVI for commercial supply, as well as all of our clinical product supply, and
we expect to continue to do so. This reliance on third parties increases the risk that we will not have sufficient quantities of our products
or  product  candidates  or  such  quantities  at  an  acceptable  cost  or  quality,  which  could  delay,  prevent  or  impair  our  development  or
commercialization efforts.

We do not currently own or operate, nor do we have any plans to establish in the future, any manufacturing facilities. We rely, and
expect to continue to rely, on third parties for the manufacture, testing, packaging and labeling of any products that we commercialize and our
product candidates for pre-clinical development and clinical testing. For example, we currently rely on Samsung Biologics for clinical and
commercial supply of ublituximab. Our reliance on third parties increases the risk that we will not have sufficient quantities of our products
or  product  candidates  or  such  quantities  at  an  acceptable  cost  or  quality,  which  could  delay,  prevent  or  impair  our  development  or
commercialization efforts.

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The  facilities  used  by  contract  manufacturers  to  manufacture,  test,  package,  and  label  our  product  and  product  candidates  typically
undergo  periodic  inspections  by  the  FDA  or  a  comparable  foreign  regulatory  authority  to  verify  compliance  with  applicable  cGMP
regulations. Additional inspections may be conducted after we submit our marketing applications to or receive marketing approval from the
FDA  or  a  comparable  foreign  regulatory  authority.  Although  the  FDA  and  other  regulators  impose  requirements  regarding  our  selection,
qualification, oversight, and monitoring of our contract manufacturers and hold us responsible for the ultimate compliance of our products,
we do not directly control the manufacturing process of our third-party contract manufacturers and are subject to risks associated with their
ability  to  comply  with  cGMPs  in  connection  with  the  manufacture  of  our  products  and  product  candidates.  If  our  contract  manufacturers
cannot successfully manufacture material that conforms to our specifications and the strict regulatory requirements of the FDA or others and
the  compliance  concerns  cannot  be  resolved,  remediated,  or  otherwise  addressed  to  the  FDA’s  or  others’  satisfaction  in  a  timely  manner
during the review of any marketing applications that we submit, it may negatively impact our ability to obtain regulatory approval for our
drug candidates or obtain approval within projected timelines. We cannot guarantee the ability of our third-party manufacturers to maintain
compliance with cGMP regulations, including having adequate quality control, quality assurance and qualified personnel. Further, our failure,
or the failure of our third-party manufacturers, to comply with applicable regulations could result in sanctions being imposed on us, including
clinical  holds,  fines,  injunctions,  civil  penalties,  delays,  suspension  or  withdrawal  of  approvals,  license  revocation,  seizures  or  recalls  of
products or product candidates, operating restrictions and criminal prosecutions, any of which could significantly and adversely affect our
business and supplies of our products or product candidates.

Our reliance on third-party manufacturers entails additional risks, including:

● reliance on the third party for regulatory compliance and quality assurance;
● the possible breach of the manufacturing, supply or quality agreement by the third party;
● the possible misappropriation of our proprietary information, including our trade secrets and know-how; and
● the possible termination or nonrenewal of the agreement by the third party at a time that is costly or inconvenient for us.

Moreover,  our  current  long-term  supply  agreement  for  ublituximab  contains  certain  minimum  purchases  in  what  are  commonly
referred  to  as  a  “take  or  pay”  provision,  and  it  is  possible  that  future  supply  agreements  could  contain  such  provisions.  To  the  extent  our
demand does not meet the minimum supply required amounts, we would be forced to pay more than desired. This could create a situation
where  we  are  spending  more  than  required  and  could  impact  our  on-going  operations  and  entail  curtailing  other  important  research  and
development  or  commercialization  efforts,  all  of  which  could  have  a  material  adverse  effect  on  the  Company.  In  negotiating  our  supply
agreement for ublituximab, there is no guarantee that we have foreseen all eventualities or that our third-party manufacturer will be able to
accommodate  unforeseen  changes  in  business  direction  in  a  timely  fashion  or  at  all.  Scheduling  of  manufacturing  at  our  third-party
manufacturer  is  governed  by  contractual  terms  that  require  us  to  make  investments  in  inventory  of  materials,  with  limited  shelf-life,  in
advance of regulatory approval and based on preliminary commercial forecasting, and such inventory may not be used if timelines and supply
needs shift.

Our drug candidates and any drugs that we may develop may compete with other drug candidates and approved drugs for access to
manufacturing  facilities.  There  are  a  limited  number  of  manufacturers  that  operate  under  cGMP  regulations  and  that  might  be  capable  of
manufacturing for us. Any third-party manufacturer with which we contract will have other clients, and our relative importance as a customer
may adversely impact contractual terms or the performance of services in a satisfactory manner or on a timely basis.

Any performance failure on the part of our existing or future manufacturers could delay clinical development or marketing approval
or  interrupt  commercial  distribution.  If  our  current  contract  manufacturers  cannot  perform  as  agreed,  we  may  be  required  to  replace  such
manufacturers causing additional costs and delays in identifying and qualifying any such replacement. If a new contract manufacturer is not
successful  in  replicating  the  product  or  experiences  delays,  or  if  regulatory  authorities  impose  unforeseen  requirements  with  respect  to
product  comparability  from  multiple  manufacturing  sources,  we  may  experience  delays  in  clinical  development  or  an  interruption  in  our
commercial  supply.  No  assurance  can  be  given  that  any  new  manufacturer  will  be  successful  or  that  material  manufactured  by  a  new
manufacturer will perform comparably to product manufactured by the previous manufacturer or that the relevant regulatory agencies will
agree with our interpretation of comparability. Any significant delays or gaps in supply of commercial or clinical products may adversely
affect our clinical development program, our ability to commercialize any drugs that receive marketing approval on a timely and competitive
basis, and our future profit margins.

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We  also  rely  on  other  third  parties  to  store  and  distribute  drug  supplies  for  our  clinical  trials  and  for  commercial  demand  for
BRIUMVI  and  expect  to  continue  to  do  so  for  any  other  potential  commercial  products.  Any  performance  failure  on  the  part  of  our
distributors could delay clinical development or marketing approval of any future product candidates or commercialization of our products,
producing additional losses and depriving us of potential product revenue.

The  third  parties  upon  whom  we  rely  for  the  supply  of  starting  materials,  intermediates,  active  pharmaceutical  ingredient  (API)/drug
substance, drug product, and other materials used in our drug candidates are our sole source of supply, and the loss or disruption of any
of these suppliers could significantly harm our business.

The  starting  materials,  intermediates,  API/drug  substance,  and  drug  product  used  in  many  of  our  drug  candidates  are  currently
supplied to us from single-source suppliers. Our ability to successfully develop our drug candidates, supply our drug candidates for clinical
trials  and  to  ultimately  supply  our  commercial  drugs  in  quantities  sufficient  to  meet  the  market  demand,  depends  in  part  on  our  ability  to
obtain starting materials, intermediates, API/drug substance, and drug product for these drugs in accordance with regulatory requirements and
in sufficient quantities for clinical testing and commercialization. It is expected that many of our manufacturing partners will be sole source
suppliers  from  single  site  locations  for  the  foreseeable  future.  Various  raw  materials,  components,  and  testing  services  required  for  our
product  and  product  candidates  may  also  be  single  sourced.  We  are  not  certain  that  our  single-source  suppliers  will  be  able  to  supply
sufficient quantities of their products or on the timelines necessary to meet our needs, either because of the nature of our agreements with
those suppliers, our limited experience with those suppliers, our relative importance as a customer to those suppliers, international political
conflicts that may impact trade or the supply chain within a particular region, public health emergencies such as the COVID-19 pandemic or
natural disasters that may cause those suppliers to stop work for a period of time or lead to a sudden increase in demand for selected materials
resulting in short-term unavailability of such materials. If any of our suppliers ceases its operations for any reason or is unable or unwilling to
supply starting materials, intermediates, API/drug substance, and drug product in sufficient quantities or on the timelines necessary to meet
our needs, it could significantly and adversely affect our business, the supply of our drug candidates and our financial condition. In addition,
if our current or future supply of any of our products or product candidates should fail to meet specifications during its stability program there
could be a voluntary or mandatory product recall if the product is approved and, even in the absence of a recall, there could be significant
interruption of our supply of drug, which would adversely affect the clinical development and commercialization of the product.

The COVID-19 pandemic has caused strain on the global supply chain. Although the pandemic has not had a material adverse effect
on our supply chain to date, no assurance can be given that it will not in the future if the situation persists or worsens. In addition to potential
disruptions at our contract manufacturers, there may be unfavorable changes in the availability or cost of raw materials, intermediates or other
materials that we need for clinical and commercial production, which may result in higher costs or supply chain interruptions.

We continually evaluate our supply chains to identify potential risks and needs for additional manufacturers and other suppliers for
the  production  of  our  products  and  product  candidates.  Establishing  additional  or  replacement  suppliers  for  the  API/drug  substance,  drug
product, and certain raw materials, if required, may not be accomplished quickly, or at all, and may involve significant expense. If we are able
to  find  a  replacement  supplier,  we  would  need  to  evaluate  and  qualify  such  replacement  supplier  and  its  ability  to  meet  quality  and
compliance  standards.  Any  change  in  suppliers  or  the  manufacturing  process  could  require  additional  regulatory  approval  and  result  in
operational  delays.  While  we  seek  to  maintain  adequate  inventory  of  materials  necessary  for  the  production  of  our  products  and  product
candidates,  any  supply  interruption  or  delay,  or  our  inability  to  identify  alternate  sources  at  acceptable  prices  in  a  timely  manner  could
impede,  delay,  limit  or  prevent  our  commercialization  and  development  efforts,  which  could  harm  our  business,  results  of  operations,
financial condition and prospects.

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Because  we  have  in-licensed  BRIUMVI  and  our  product  candidates  from  third  parties,  any  dispute  with  or  non-performance  by  our
licensors will adversely affect our ability to develop and commercialize the applicable product or product candidate.

Because  we  license  BRIUMVI  and  our  product  candidates  from  third  parties  and  we  expect  to  continue  to  in-license  additional
product candidates, if there is any dispute between us and our licensor regarding our rights under a license agreement, our ability to develop
and  commercialize  the  applicable  product  or  product  candidate  may  be  adversely  affected.  Disputes  may  arise  with  the  third  parties  from
whom we license our products and product candidates for a variety of reasons, including:

● the scope of rights granted under the license agreement and other interpretation-related issues;
● the  extent  to  which  our  technology  and  processes  infringe  on  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 and obligations associated with

sublicensing;

● our diligence obligations under the license agreement and what activities satisfy those diligence obligations;
● the 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 currently license BRIUMVI and our product candidates from third parties are complex,
and certain provisions in such agreements may be susceptible to multiple interpretations, or may conflict in such a way that puts us in breach
of one or more agreements, which would make us susceptible to lengthy and expensive disputes with one or more of our licensing partners.
The resolution of any contract interpretation disagreement that may arise could narrow what we believe to be the scope of our rights to the
relevant intellectual property or technology, or increase what we believe to be our financial or other obligations under the relevant agreement,
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  product  or  product  candidate,
which could have a material adverse effect on our business, financial conditions, results of operations, and prospects.

If conflicts arise between us and our future collaborators or strategic partners, these parties may act in a manner adverse to us and could
limit our ability to implement our strategies.

If conflicts arise between our future corporate or academic collaborators or strategic partners and us, the other party may act in a
manner adverse to us and could limit our ability to implement our strategies. Future collaborators or strategic partners, may develop, either
alone  or  with  others,  products  in  related  fields  that  are  competitive  with  the  products  or  potential  products  that  are  the  subject  of  these
collaborations.  Competing  products,  either  developed  by  the  collaborators  or  strategic  partners  or  to  which  the  collaborators  or  strategic
partners have rights, may result in the withdrawal of partner support for any future product candidates. Our current or future collaborators or
strategic  partners  may  preclude  us  from  entering  into  collaborations  with  their  competitors,  fail  to  obtain  timely  regulatory  approvals,
terminate their agreements with us prematurely, or fail to devote sufficient resources to the development and commercialization of products.
Any of these developments could harm any future product development efforts.

We may seek to establish additional collaborations, and if we are not able to establish them on commercially reasonable terms, we may
have to alter our development and commercialization plans.

Our drug development programs and the potential commercialization of our drug candidates will require substantial additional cash
to  fund  expenses.  For  some  of  our  drug  candidates,  we  may  decide  to  collaborate  with  additional  pharmaceutical  and  biotechnology
companies for the development and potential commercialization of those drug candidates.

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We face significant competition in seeking appropriate collaborators. Whether we reach a definitive agreement for a collaboration
will depend, among other things, upon our assessment of the collaborator’s resources and expertise, the terms and conditions of the proposed
collaboration,  and  the  proposed  collaborator’s  evaluation  of  a  number  of  factors.  Those  factors  may  include  the  design  or  results  of  our
clinical trials, the likelihood of approval by the FDA or similar regulatory authorities outside the United States, the potential market for the
subject  product  candidate,  the  costs  and  complexities  of  manufacturing  and  delivering  such  product  candidate  to  patients,  the  potential  of
competing drugs, the existence of uncertainty with respect to our ownership of technology, which can exist if there is a challenge to such
ownership without regard to the merits of the challenge, and industry and market conditions generally. The collaborator may also consider
alternative product candidates or technologies for similar indications that may be available to collaborate on and whether such a collaboration
could be more attractive than the one with us for our product candidate. The terms of any additional collaborations or other arrangements that
we may establish may not be favorable to us.

We  may  be  restricted  under  our  collaboration  agreements  from  entering  into  future  agreements  on  certain  terms  with  potential
collaborators. Collaborations are complex and time-consuming to negotiate and document. In addition, there have been a significant number
of  recent  business  combinations  among  large  pharmaceutical  companies  that  have  resulted  in  a  reduced  number  of  potential  future
collaborators.

We may not be able to negotiate additional collaborations on a timely basis, on acceptable terms, or at all. If we are unable to do so, we
may  have  to  curtail  the  development  of  the  product  candidate  for  which  we  are  seeking  to  collaborate,  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  increase  our  expenditures  to  fund  development  or  commercialization  activities  on  our  own,  we  may  need  to  obtain  additional  capital,
which may not be available to us on acceptable terms or at all. If we do not have sufficient funds, we may not be able to further develop our
product candidates or bring them to market and generate revenue from their sales.

Any  future  collaborations  that  we  enter  into  may  not  be  successful.  The  success  of  our  collaboration  arrangements  will  depend
heavily on the efforts and activities of our collaborators. Collaborators generally have significant discretion in determining the efforts and
resources  that  they  will  apply  to  these  collaborations.  Disagreements  between  parties  to  a  collaboration  arrangement  regarding  clinical
development  and  commercialization  matters  can  lead  to  delays  in  the  development  process  or  commercializing  the  applicable  product
candidate and, in some cases, termination of the collaboration arrangement. These disagreements can be difficult to resolve if neither of the
parties has final decision-making authority. Collaborations with pharmaceutical or biotechnology companies and other third parties often are
terminated or allowed to expire by the other party. Any termination or expiration of any future collaboration agreement could adversely affect
us financially or harm our business reputation.

Risks Relating to Our Intellectual Property

Our  success  depends  upon  our  ability  to  obtain  and  protect  our  intellectual  property  and  proprietary  technologies.  If  the  scope  of  our
patent  protection  obtained  is  not  sufficiently  broad,  our  competitors  could  develop  and  commercialize  technology  and  drugs  similar  or
identical to ours, and our ability to successfully commercialize our technology and drugs may be impaired.

Our commercial success in part depends on obtaining and maintaining patent protection and trade secret protection in the United
States and other countries with respect to any product we commercialize, including BRIUMVI, our product candidates, their formulations and
uses and the methods we use to manufacture them, as well as successfully defending these patents against third-party challenges. We seek to
protect  our  proprietary  and  intellectual  property  position  by  filing  patent  applications  in  the  United  States  and  abroad  related  to  our  novel
technologies and product candidates, and by maintenance of our trade secrets through proper procedures. Because we in-license our products
and  product  candidates,  we  also  rely  on  our  licensors  to  protect  the  patent  and  other  intellectual  property  rights  necessary  for
commercialization.

We  will  only  be  able  to  protect  our  technologies  from  unauthorized  use  by  third  parties  to  the  extent  that  valid  and  enforceable
patents or trade secrets cover them in the market they are being used or developed. The degree of patent protection we require to successfully
commercialize our products and product candidates may be unavailable or severely limited in some cases and may not adequately protect our
rights or permit us to gain or keep any competitive advantage. We cannot provide any assurances that any of our patents have, or that any of
our pending patent applications that mature into issued patents will include, claims with a scope sufficient to protect any of our products. In
addition, the laws of foreign countries may not protect our patent rights to the same extent as the patent laws of the United States.

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Furthermore, patents have a limited lifespan. In the United States, the natural expiration of a patent is generally twenty years after it
is filed. Various extensions may be available; however, the life of a patent, and the protection it affords, is limited. Given the amount of time
required for the development, testing and regulatory review of new drug candidates, patents protecting such candidates might expire before or
shortly after such candidates are commercialized. As a result, our patent portfolio may not provide us with adequate and continuing patent
protection sufficient to exclude others from commercializing drugs similar or identical to our product or product candidates, including generic
versions of such drugs.

Currently,  we  have  several  granted  patents  in  the  United  States  and  EU,  among  other  countries,  and  several  pending  patent
applications that have not yet been issued or have been issued in certain jurisdictions but not all jurisdictions in which such applications have
been filed. There can be no guarantee that any pending patent applications, nor any patent applications filed in the future will be granted in
any or all jurisdictions in which they were filed, or that all patent claims initially submitted for examination in such patent applications will
be allowed in the patent that is eventually granted, if at all. The patent prosecution process is subject to numerous risks and uncertainties, and
there can be no assurance of the scope of patent claims that will ultimately be allowed, if at all, and no assurance that we or our partners will
be successful in protecting our product and product candidates by obtaining and defending patents.

These risks and uncertainties include the following:

● the patent applications that we or our licensors file may not issue as patent;
● patents that may be issued or in-licensed may be challenged, invalidated, modified, revoked or circumvented, or otherwise may

not provide any competitive advantage;

● as of March 16, 2013, the United States converted from a first-to-invent to a first-to-file system. If we do not win the filing

race, we will not be entitled to inventive priority;

● our  competitors,  many  of  whom  have  substantially  greater  resources  than  we  do,  and  many  of  whom  have  made  significant
investments  in  competing  technologies,  may  seek,  or  may  already  have  obtained,  patents  that  will  limit,  interfere  with,  or
eliminate our ability to file new patent applications covering our products, or make, use, and/or sell our products either in the
United States or in international markets;

● there  may  be  significant  pressure  on  the  United  States  government  and  other  international  governmental  bodies  to  limit  the
scope of patent protection both inside and outside the United States for disease treatments that prove successful as a matter of
public  policy  regarding  worldwide  health  concerns,  which  could  limit  our  ability  to  fully  monetize  our  intellectual  property
rights; and

● countries other than the United States may have less restrictive patent laws than those of the United States, allowing foreign
competitors  to  exploit  such  less  restrictive  patent  laws  to  make,  use,  and/or  sell  competing  products  in  their  respective
jurisdictions.

If we are not able to obtain patents that protect our product and product candidates, it could have a material adverse effect on our

financial condition and results of operations.

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In  addition,  the  patent  prosecution  process  is  expensive  and  time-consuming,  and  we  may  not  be  able  to  file  and  prosecute  all
necessary  or  desirable  patent  applications  at  a  reasonable  cost  or  in  a  timely  manner.  Further,  with  respect  to  some  of  the  pending  patent
applications covering our drug candidates, prosecution has yet to commence. Patent prosecution is a lengthy process, during which the scope
of  the  claims  initially  submitted  for  examination  by  the  USPTO  can  be  significantly  narrowed  by  the  time  they  issue,  if  at  all.  It  is  also
possible that we will fail to identify any patentable aspects of our research and development output and methodology, and, even if we do, an
opportunity to obtain patent protection may have passed. Given the uncertain and time-consuming process of filing patent applications and
prosecuting them, it is possible that our product(s) or process(es) originally covered by the scope of our patent applications may change or be
modified  throughout  the  patent  prosecution  process,  leaving  our  product(s)  or  process(es)  without  patent  protection.  Moreover,  in  some
circumstances, we do not have the right to control the preparation, filing and prosecution of patent applications, or to maintain the patents,
that cover technology licensed from third parties. Therefore, these patents and applications may not be prosecuted and enforced in a manner
consistent with the best interests of our business. If our licensors or we fail to appropriately prosecute and maintain patent protection or trade
secret  protection  for  one  or  more  products  or  product  candidates,  our  ability  to  develop  and  commercialize  such  drugs  may  be  adversely
affected and we may not be able to prevent competitors from making, using and selling competing products. This failure to properly protect
the intellectual property rights relating to our product and product candidates could impair our ability to compete in the market and adversely
affect our ability to generate revenues and achieve profitability, which would have a material adverse effect on our financial condition and
results  of  operations.  Furthermore,  should  we  enter  into  other  collaborations,  including  out-licensing,  joint  development  projects,  or  other
partnerships, we may be required to consult with or cede control to collaborators regarding the prosecution, maintenance and enforcement of
patents licensed or developed under such collaborations. Therefore, such patents and patent applications may not be prosecuted and enforced
in a manner consistent with the best interests of our business.

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. In addition, no consistent policy regarding the breadth of claims
allowed in pharmaceutical or biotechnology patents has emerged to date in the United States. The patent situation outside the United States is
even  more  uncertain.  The  patent  laws  of  foreign  countries  may  not  protect  our  patent  rights  to  the  same  extent  as  the  laws  of  the  United
States, and we may fail to seek or obtain patent protection in all major markets. For example, European patent law restricts the patentability
of methods of treatment of the human body more than United States patent law does. Our pending and future patent applications may not
result  in  patents  being  issued  which  protect  our  technology  or  products,  in  whole  or  in  part,  or  which  effectively  prevent  others  from
commercializing competitive technologies and products. Changes in either the patent laws or interpretation of the patent laws in the U.S. and
other countries may diminish the value of our patents or narrow the scope of our patent protection. For example, the federal courts of the
United States have taken an increasingly dim view of the patent eligibility of certain subject matter, such as naturally occurring nucleic acid
sequences, amino acid sequences and certain methods of utilizing same, which include their detection in a biological sample and diagnostic
conclusions  arising  from  their  detection.  Such  subject  matter,  which  had  long  been  a  staple  of  the  biotechnology  and  biopharmaceutical
industry to protect their discoveries, is now considered, with few exceptions, ineligible in the first instance for protection under the patent
laws of the United States. Accordingly, we cannot predict the breadth of claims that may be allowed or enforced in our patents or in those
licensed from a third-party.

In  addition,  U.S.  patent  laws  may  change,  which  could  prevent  or  limit  us,  our  subsidiaries,  or  our  licensors  from  filing  patent
applications or patent claims to protect products and/or technologies or limit the exclusivity periods that are available to patent holders, as
well as affect the validity, enforceability, or scope of issued patents. For example, on September 16, 2011, the Leahy-Smith America Invents
Act  was  signed  into  law.  The  Leahy-Smith  Act  includes  a  number  of  significant  changes  to  United  States  patent  law.  These  include  the
transition from a first-to-invent system to a first-to-file system and changes to the way issued patents are challenged. The formation of the
Patent Trial and Appeal Board now provides a quicker and less expensive process for challenging issued patents.

The patents or patent applications owned or filed by us, or by our licensors or other collaborators, may be affected by third-party
pre-issuance submissions of prior art to the USPTO, or by opposition, derivation, reexamination, inter parties review, post-grant review or
interference  proceedings.  The  costs  of  these  proceedings  could  be  substantial,  and  it  is  possible  that  our  efforts  to  establish  priority  of
invention  would  be  unsuccessful,  resulting  in  a  material  adverse  effect  on  our  U.S.  patent  position.  An  adverse  determination  in  any  such
submission, patent office trial, proceeding or litigation could reduce the scope of, render unenforceable, or invalidate, our patent rights, allow
third parties to commercialize our technology or products and compete directly with us, without payment to us, or result in our inability to
manufacture  or  commercialize  products  without  infringing  third-party  patent  rights.  In  addition,  if  the  breadth  or  strength  of  protection
provided by patents and patent applications for our drug candidates is threatened, it could dissuade companies from collaborating with us to
license, develop or commercialize current or future products or product candidates.

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The issuance of a patent does not foreclose challenges to its inventorship, scope, validity or enforceability. Therefore, our owned and
licensed patents may be challenged in the courts or patent offices in the U.S. and abroad. Such challenges may result in loss of exclusivity or
in patent claims being narrowed, invalidated or held unenforceable, in whole or in part, which could limit our ability to stop others from using
or commercializing similar or identical technology and products, or limit the duration of the patent protection of our technology and products.
Given  the  amount  of  time  required  for  the  development,  testing  and  regulatory  review  of  new  product  candidates,  patents  protecting  such
product  candidates  might  expire  before  or  shortly  after  such  product  candidates  are  commercialized.  As  a  result,  our  owned  and  licensed
patent portfolio may not provide us with enough rights to exclude others from commercializing products similar or identical to ours.

Even if our patent applications issue as patents, and they are unchallenged, our issued patents and pending patent applications, if
issued, may not provide us with any meaningful protection or prevent competitors from designing around our patent claims to circumvent our
owned or licensed patents by developing similar or alternative technologies or drugs in a non-infringing manner. For example, a third party
may develop a competitive drug that provides benefits similar to one or more of our products or product candidates but that has a different
composition that falls outside the scope of our patent protection. If the patent protection provided by the patents and patent applications we
hold  or  pursue  with  respect  to  our  products  or  product  candidates  is  not  sufficiently  broad  to  impede  such  competition,  our  ability  to
successfully commercialize our products or product candidates could be negatively affected, which would harm our business.

In addition, we may in the future be subject to claims by our former employees or consultants asserting an ownership right in our
patents or patent applications, as a result of the work they performed on our behalf. Although we have entered into agreements with many of
our employees, consultants and advisors and any other third parties who have access to our proprietary know-how, information or technology
for the purpose of assigning or granting similar rights to their inventions to us, we cannot be certain that we have executed such agreements
with all parties who may have contributed to our intellectual property, nor can we be certain that our agreements with such parties will be
upheld in the face of a potential challenge, or that they will not be breached, for which we may not have an adequate remedy. An adverse
determination  in  any  such  submission  or  proceeding  may  result  in  loss  of  exclusivity  or  freedom  to  operate  or  in  patent  claims  being
narrowed, invalidated or held unenforceable, in whole or in part, which could limit our ability to stop others from using or commercializing
similar or identical technology and drugs, without payment to us, or could limit the duration of the patent protection covering our technology
and drug candidates. Such challenges may also result in our inability to manufacture or commercialize our products and product candidates
without  infringing  third-party  patent  rights.  In  addition,  if  the  breadth  or  strength  of  protection  provided  by  our  patents  and  patent
applications is threatened, it could dissuade companies from collaborating with us to license, develop or commercialize current or future drug
candidates.

Patent protection and other intellectual property protection are crucial to the success of our business and prospects, and there is a

substantial risk that such protections will prove inadequate.

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Obtaining  and  maintaining  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.

The USPTO and various foreign governmental patent agencies require compliance with a number of procedural, documentary, fee
payment and other similar provisions during the patent application process. In addition, periodic maintenance fees on issued patents often
must be paid to the USPTO and foreign patent agencies over the lifetime of the patent. While an unintentional lapse 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 noncompliance can
result  in  abandonment  or  lapse  of  the  patent  or  patent  application,  resulting  in  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, but are not limited to,
failure to respond to official actions within prescribed time limits, non-payment of fees and failure to properly legalize and submit formal
documents.  If  we  fail  to  maintain  the  patents  and  patent  applications  covering  our  drugs  or  procedures,  we  may  not  be  able  to  stop  a
competitor from marketing drugs that are the same as or similar to our products or product candidates, which would have a material adverse
effect on our business.

If  we  do  not  obtain  patent  term  extensions  under  the  Hatch-Waxman  Act  and  similar  foreign  legislation  extending  the  terms  of  our
licensed patents and any future patents we may own, our business may be materially harmed.

Depending  on  the  timing,  duration,  and  specifics  of  any  FDA  regulatory  approval  for  our  drug  candidates,  one  or  more  of  our
licensed U.S. patents or future U.S. patents that we may license or own may be eligible for limited patent term restoration under the Hatch-
Waxman Act. The Hatch-Waxman Act permit a patent term extension of up to five years as compensation for patent term lost during the FDA
regulatory review process. A patent term extension cannot extend the remaining term of a patent beyond 14 years from the date of product
approval by the FDA, and only one patent covering the approved product may be extended.

The  application  for  a  patent  term  extension  is  subject  to  approval  by  the  USPTO,  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  relevant
patents  or  otherwise  failing  to  satisfy  applicable  requirements.  Moreover,  the  applicable  time  period  or  the  scope  of  the  patent  protection
afforded could be less than what we request. If we are unable to obtain patent term extension or any term of such extension is less than we
request, the period during which we will have the right to exclusively market our product will be shortened and our competitors may obtain
earlier approval of competing products, and our ability to generate revenues could be materially adversely affected.

We may not be able to enforce our intellectual property rights throughout the world.

Filing, prosecuting and defending patents on drug candidates throughout the world would be prohibitively expensive. Competitors
may use our licensed and owned technologies in jurisdictions where we have not licensed or obtained patent protection to develop their own
products and, further, may export otherwise infringing products to territories where we may obtain or license patent protection, but where
patent enforcement is not as strong as that in the United States. These products may compete with our products in jurisdictions where we do
not have any issued or licensed patents and any future patent claims or other intellectual property rights may not be effective or sufficient to
prevent them from so competing.

Moreover,  our  ability  to  protect  and  enforce  our  intellectual  property  rights  may  be  adversely  affected  by  unforeseen  changes  in
foreign  intellectual  property  laws.  Additionally,  laws  of  some  countries  outside  of  the  United  States  and  Europe  do  not  afford  intellectual
property protection to the same extent as the laws of the United States and Europe. Many companies have encountered significant problems
in protecting and defending intellectual property rights in certain foreign jurisdictions. The legal systems of some countries, including India,
China  and  other  developing  countries,  do  not  favor  the  enforcement  of  patents  and  other  intellectual  property  rights.  This  could  make  it
difficult for us to stop the infringement of our patents or the misappropriation of our other intellectual property. For example, many foreign
countries have compulsory licensing laws under which a patent owner must grant licenses to third parties. Consequently, we may not be able
to prevent third parties from practicing our inventions in certain countries outside the United States and Europe.

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Proceedings to enforce our future patent rights, if any, in foreign jurisdictions could result in substantial cost and divert our resources
and attention from other aspects of our business. Moreover, such proceedings could put our patents at risk of being invalidated or interpreted
narrowly and our patent applications at risk of not issuing 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 meaningful. Furthermore, while we intend to
protect our intellectual property rights in major markets for our products, 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 products. Accordingly, our efforts to protect our intellectual property rights in
such countries may be inadequate.

We  may  be  involved  in  lawsuits  to  protect  or  enforce  our  patents  or  the  patents  of  our  licensors,  which  could  be  expensive,  time
consuming and unsuccessful.

Competitors  may  infringe  our  patents  or  the  patents  of  our  licensors.  To  counter  infringement  or  unauthorized  use,  we  may  be
required  to  file  infringement  claims,  which  typically  are  very  expensive,  time-consuming  and  disruptive  to  our  day-to-day  business
operations. Any claims we assert against accused infringers could provoke these parties to assert counterclaims against us alleging invalidity
of our or certain of our subsidiaries’ patents or that we infringe their patents; or provoke those parties to petition the USPTO to institute inter
parties review against the asserted patents, which may lead to a finding that all or some of the claims of the asserted patents are invalid. In
addition,  in  an  infringement  proceeding,  a  court  may  decide  that  a  patent  of  ours  or  our  licensors  is  not  valid  or  is  unenforceable  or  may
refuse to stop the other party from using the technology at issue on the grounds that our patents do not cover the technology in question. An
adverse  result  in  any  litigation  or  defense  proceedings  could  put  one  or  more  of  our  pending  patents  at  risk  of  being  invalidated,  held
unenforceable, or interpreted narrowly.

In patent litigation in the United States, defendant counterclaims challenging the validity, enforceability or scope of asserted patents
are  commonplace.  In  addition,  third  parties  may  initiate  legal  proceedings  against  us  to  assert  such  challenges  to  our  intellectual  property
rights. The outcome of any such proceeding is generally unpredictable. Grounds for a validity challenge could be an alleged failure to meet
any of several statutory requirements, including lack of novelty, obviousness or non-enablement. Patents may be unenforceable if someone
connected  with  the  prosecution  of  the  patent  withheld  relevant  information  from  the  USPTO  or  made  a  misleading  statement  during
prosecution. It is possible that prior art of which we and the patent examiner were unaware during prosecution exists, which could render our
patents invalid. Moreover, it is also possible that prior art may exist that we are aware of but do not believe is relevant to our current or future
patents, but that could nevertheless be determined to render our patents invalid.

Competing drugs may also be sold in other countries in which our patent coverage might not exist or be as strong as in the United
States. If we lose a foreign patent lawsuit, alleging our infringement of a competitor’s patents, we could be prevented from marketing our
drugs in one or more foreign countries. Any of these outcomes would have a material adverse effect on our business.

In addition, 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. Furthermore, adverse results on
United States patents may affect related patents in our global portfolio. The adverse result could also put related pending patent applications
at risk of not issuing. Additionally, there could be public announcements of the results of hearings, motions or other interim proceedings or
developments. If securities analysts or investors perceive these results to be negative, it could have a substantial adverse effect on the price of
our common stock.

Interference  proceedings  provoked  by  third  parties  or  brought  by  the  USPTO  may  be  necessary  to  determine  the  priority  of
inventions with respect to our patents or pending patent applications or those of our collaborators or licensors. An unfavorable outcome could
require us to cease using the related technology or to attempt to license rights to it from the prevailing party. The costs of these proceedings
could be substantial. As a result, the issuance, scope, validity, enforceability and commercial value of our or any of our respective licensors’
patent  rights  are  highly  uncertain.  Our  business  could  be  harmed  if  the  prevailing  party  does  not  offer  us  a  license  on  commercially
reasonable  terms.  Litigation  or  interference  proceedings  may  fail  and,  even  if  successful,  may  result  in  substantial  costs  and  distract  our
management  and  other  employees.  We  may  not  be  able  to  prevent,  alone  or  with  our  licensors,  misappropriation  of  our  trade  secrets  or
confidential information, particularly in countries where the laws may not protect those rights as fully as in the United States.

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We  may  not  have  sufficient  financial  or  other  resources  to  adequately  conduct  such  litigation  or  proceedings.  Some  of  our
competitors may be able to sustain the costs of such litigation or proceedings more effectively than we can because of their greater financial
resources and more mature and developed intellectual property portfolios. Accordingly, despite our efforts, we may not be able to prevent
third  parties  from  infringing  upon  or  misappropriating  or  from  successfully  challenging  our  intellectual  property  rights.  Uncertainties
resulting from the initiation and continuation of patent litigation or other proceedings could have a material adverse effect on our ability to
compete in the marketplace.

If  we  or  our  partners  are  sued  for  infringing  intellectual  property  rights  of  third  parties,  it  will  be  costly  and  time  consuming,  and  an
unfavorable outcome in that litigation would have a material adverse effect on our business.

Our commercial success depends upon our ability and the ability of our collaborators to develop, manufacture, market and sell our
drug candidates and use our proprietary technologies without infringing the proprietary rights and intellectual property of third parties. The
biotechnology  and  pharmaceutical  industries  are  characterized  by  extensive  and  frequent  litigation  regarding  patents  and  other  intellectual
property rights. We may in the future become party to, or threatened with, adversarial proceedings or litigation regarding intellectual property
rights with respect to our drug candidates and technology, including interference proceedings before the USPTO.

Our competitors or other third parties may assert infringement claims against us, alleging that our drugs are covered by their patents.
Given the vast number of patents in our field of technology, we cannot be certain that we do not infringe existing patents or that we will not
infringe patents that may be granted in the future. Numerous United States and foreign issued patents and pending patent applications, which
are owned by third parties, exist in the fields in which we are developing products, some of which may be directed at claims that overlap with
the subject matter of our intellectual property. In addition, because patent applications can take many years to issue, there may be currently
pending  applications,  unknown  to  us,  which  may  later  result  in  issued  patents  that  our  product  or  product  candidates  or  proprietary
technologies may infringe. Similarly, there may be issued patents relevant to our product or product candidates of which we are not aware.
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 a first filing, or in some cases not at all. Therefore, we cannot know with
certainty whether we or our licensors were the first to make the inventions claimed in patents or pending patent applications that we own or
licensed, or that we or our licensors were the first to file for patent protection of such inventions.

We are aware of certain patents that may pose issues for our commercialization of our product and product candidates. If we decide to
initiate proceedings to challenge the validity of these patents in the future, we may be unsuccessful, as courts or patent offices in the United
States and abroad could uphold the validity of any such patents. If we were to challenge the validity of any issued United States patent in
court, we would need to overcome a statutory presumption of validity that attaches to every United States patent. This means that in order to
prevail, we would have to present clear and convincing evidence as to the invalidity of the patent’s claims. If we are unable to do so, we may
be forced to delay the launch of our product candidates or launch at the risk of litigation for patent infringement, which may have a material
adverse effect on our business and results of operations.

If a third-party claims that we or any collaborators of ours infringe their intellectual property rights, we may have to defend litigation
or administrative proceedings which may be costly whether we win or lose, and which could result in a substantial diversion of our financial
and management resources. If we are found to infringe a third party’s intellectual property rights, we could be required to obtain a license
from such third party to continue developing and marketing our drug candidates and technology. However, we may not be able to obtain any
required  license  on  commercially  reasonable  terms,  or  at  all.  Even  if  we  were  able  to  obtain  such  a  license,  it  could  be  granted  on  non-
exclusive  terms,  thereby  providing  our  competitors  and  other  third  parties  access  to  the  same  technologies  licensed  to  us.  Without  such  a
license, we could be forced, including by court order, to cease developing and commercializing the infringing technology or drug candidates.
In addition, we could be found liable for monetary damages, including treble damages and attorney’s fees if we are found to have willfully
infringed such third-party patent rights. A finding of infringement could prevent us from commercializing our drug candidates or force us to
cease some of our business operations, which could materially harm our business.

No assurance can be given that patents issued to third parties do not exist, have not been filed, or could not be filed or issued, which
contain claims covering their products, technology or methods that may encompass all or a portion of our products and methods. Given the
number of patents issued and patent applications filed in our technical areas or fields, we believe there is a risk that third parties may allege
they have patent rights encompassing our products or methods.

Other products or product candidates that we may in-license or acquire could be subject to similar risks and uncertainties.

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We may need to license certain intellectual property from third parties, and such licenses may not be available or may not be available on
commercially reasonable terms.

A  third  party  may  hold  intellectual  property,  including  patent  rights  that  are  important  or  necessary  to  the  development  and
commercialization of our products. It may be necessary for us to use the patented or proprietary technology of third parties to commercialize
our products, in which case we would be required to obtain a license from these third parties, whom may or may not be interested in granting
such a license, on commercially reasonable terms, in which case our business could be harmed, possibly materially. For example, we engage
extensively  with  third  parties,  including  academic  institutions,  to  conduct  non-clinical  and  clinical  research  on  our  product  and  product
candidates.  While  we  seek  to  ensure  all  material  transfer  and  service  agreements  governing  this  research  provide  us  with  favorable  terms
covering newly generated intellectual property, a general principle under which much of this research with academic institutions is conducted
provides third-party ownership of newly generated intellectual property, with an exclusive option available for us to obtain a license to such
intellectual  property.  Through  the  conduct  of  this  research,  it  is  possible  that  valuable  intellectual  property  could  be  developed  by  a  third
party, which we will then need to license in order to better develop or commercialize our products. No assurance can be given that we will be
able to successfully negotiate such a license on commercially reasonable terms, or at all. Further, should we fail to successfully negotiate a
license  to  such  intellectual  property,  most  institutions  are  then  free  to  license  such  intellectual  property  to  any  other  third  party,  including
potentially direct competitors of ours. Should we fail to adequately secure a license to any newly generated intellectual property, our ability to
successfully develop or commercialize our products may be hindered, possibly materially.

If we are unable to protect the confidentiality of our trade secrets, our business and competitive position may be harmed.

In  addition  to  the  protection  afforded  by  patents,  we  rely  upon  unpatented  trade  secret  protection,  unpatented  know-how  and
continuing  technological  innovation  to  develop  and  maintain  our  competitive  position.  With  respect  to  the  building  of  our  proprietary
compound  library,  we  consider  trade  secrets  and  know-how  to  be  our  primary  intellectual  property.  We  seek  to  protect  our  proprietary
technology  and  processes,  in  part,  by  entering  into  confidentiality  agreements  with  our  collaborators,  scientific  advisors,  employees  and
consultants,  and  invention  assignment  agreements  with  our  consultants  and  employees.  We  may  not  be  able  to  prevent  the  unauthorized
disclosure  or  use  of  our  technical  know-how  or  other  trade  secrets  by  the  parties  to  these  agreements,  however,  despite  the  existence  of
confidentiality agreements and other contractual restrictions. Monitoring unauthorized uses and disclosures is difficult, and we do not know
whether  the  steps  we  have  taken  to  protect  our  proprietary  technologies  will  be  effective.  If  any  of  the  collaborators,  scientific  advisors,
employees  and  consultants  who  are  parties  to  these  agreements  breach  or  violate  the  terms  of  any  of  these  agreements,  we  may  not  have
adequate  remedies  for  any  such  breach  or  violation,  and  we  could  lose  our  trade  secrets  as  a  result.  Enforcing  a  claim  that  a  third  party
illegally obtained and is using our trade secrets, like patent litigation, is expensive and time-consuming, and the outcome is unpredictable. In
addition, courts outside the United States are sometimes less willing to protect trade secrets.

Our trade secrets could otherwise become known or be independently discovered by our competitors. Competitors could purchase
our  drug  candidates  and  attempt  to  replicate  some  or  all  of  the  competitive  advantages  we  derive  from  our  development  efforts,  willfully
infringe  our  intellectual  property  rights,  design  around  our  protected  technology  or  develop  their  own  competitive  technologies  that  fall
outside  of  our  intellectual  property  rights.  If  any  of  our  trade  secrets  were  to  be  lawfully  obtained  or  independently  developed  by  a
competitor, we would have no right to prevent them, or those to whom they communicate it, from using that technology or information to
compete  with  us.  If  our  trade  secrets  are  not  adequately  protected  so  as  to  protect  our  market  against  competitors’  drugs,  our  competitive
position could be adversely affected, as could our business.

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We may be subject to damages resulting from claims that we or our employees have wrongfully used or disclosed alleged trade secrets of
our competitors or are in breach of non-competition or non-solicitation agreements with our competitors.

We could in the future be subject to claims that we or our employees have inadvertently or otherwise used or disclosed alleged trade
secrets or other proprietary information of former employers or competitors. Although we try to ensure that our employees and consultants do
not use the intellectual property, proprietary information, know-how or trade secrets of others in their work for us, we may in the future be
subject to claims that we caused an employee to breach the terms of his or her non-competition or non-solicitation agreement, or that we or
these individuals have, inadvertently or otherwise, used or disclosed the alleged trade secrets or other proprietary information of a former
employer  or  competitor.  Litigation  may  be  necessary  to  defend  against  these  claims.  Even  if  we  are  successful  in  defending  against  these
claims, litigation could result in substantial costs and could be a distraction to management. If our defenses to these claims fail, in addition to
requiring us to pay monetary damages, a court could prohibit us from using technologies or features that are essential to our drug candidates,
if such technologies or features are found to incorporate or be derived from the trade secrets or other proprietary information of the former
employers. An inability to incorporate such technologies or features would have a material adverse effect on our business and may prevent us
from successfully commercializing our drug candidates. In addition, we may lose valuable intellectual property rights or personnel as a result
of  such  claims.  Moreover,  any  such  litigation  or  the  threat  thereof  may  adversely  affect  our  ability  to  hire  employees  or  contract  with
independent sales representatives. A loss of key personnel or their work product could hamper or prevent our ability to commercialize our
drug candidates, which would have an adverse effect on our business, results of operations and financial condition.

Risks Related to Our Business Organization and Governance, Strategy, Employees and Growth Management

If we fail to attract and keep key management, commercial, and clinical development personnel, we may be unable to successfully develop
or commercialize our product and product candidates.

We are highly dependent on the research and development, commercialization, manufacturing, quality, financial and legal expertise
of our senior management team as well as the other principal members of our management. Although we have entered into an employment
agreement with our chief executive officer and employment letters with our senior managers, each of our executive officers may terminate
their employment with us at any time. We do not maintain key person insurance for any of our executives or other employees. In addition, we
rely  on  consultants  and  advisors,  including  scientific  and  clinical  advisors,  to  assist  us  in  formulating  our  research  and  development  and
commercialization strategy. Our consultants and advisors may be employed by employers other than us and may have commitments under
consulting or advisory contracts with other entities that may limit their availability to us. If we are unable to continue to attract and retain high
quality personnel, our ability to pursue our growth strategy will be limited.

Recruiting and retaining qualified scientific, clinical, manufacturing and medical affairs, and commercial personnel, particularly in
MS,  will  be  critical  to  our  success.  The  loss  of  the  services  of  our  chief  executive  officer  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. Furthermore, replacing 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 products. 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 pharmaceutical and biotechnology companies for similar
personnel. In January and April 2022, following the withdrawal of the BLA and sNDA for U2 and the withdrawal of UKONIQ from sale, we
engaged  in  streamlining  efforts  across  the  Company,  reducing  headcount  and  external  expenses,  primarily  related  to  our  oncology
commercialization and research and development functions. Those streamlining efforts have made and may continue to make retention of key
personnel  more  difficult.  If  we  are  not  able  to  attract  and  retain  the  necessary  personnel  to  accomplish  our  business  objectives,  we  may
experience  constraints  that  will  significantly  impede  the  achievement  of  our  development  and  commercialization  objectives,  our  ability  to
raise additional capital, and our ability to implement our business strategy.

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We will need to develop and expand our business, and we may encounter difficulties in managing this development and expansion, which
could disrupt our operations.

We may attempt to expand our business by acquiring additional businesses or drugs, forming strategic alliances or creating joint

ventures with third parties. We may encounter numerous difficulties in developing, manufacturing, and marketing any new products resulting
from any such arrangement or transaction that may delay or prevent us from realizing their expected benefits. If we are unable to successfully
integrate such acquired businesses with our existing operations and company culture, we may never realize the benefits of such acquisitions
or strategic alliances. We cannot assure you that, following any such transaction, we will achieve the expected synergies to justify the
transaction.

As  of  February  16,  2023,  we  had  226  full-time  employees.  Our  management  and  medical,  commercial,  and  scientific  personnel,
systems  and  facilities  currently  in  place,  which  were  largely  designed  to  support  research  and  development  and  commercialization  in
oncology, may not be adequate to support our anticipated future growth, particularly in MS. To manage our anticipated future growth and
focus  in  neurology  and  immunology,  we  must  continue  to  implement  and  improve  our  managerial,  operational  and  financial  systems,  and
continue  to  recruit  and  train  additional  qualified  personnel.  Also,  our  management  may  need  to  divert  a  disproportionate  amount  of  its
attention  away  from  its  day-to-day  activities  and  devote  a  substantial  amount  of  time  to  managing  these  activities.  Due  to  our  limited
resources,  we  may  not  be  able  to  effectively  manage  the  expansion  and  shift  of  our  operations  or  recruit  and  train  additional  qualified
personnel.  This  may  result  in  weaknesses  in  our  infrastructure,  give  rise  to  operational  mistakes,  loss  of  business  opportunities,  loss  of
employees  and  reduced  productivity  among  remaining  employees.  If  our  management  is  unable  to  effectively  manage  our  transition  to  a
strategy primarily focused on neurology and immunology, our expenses may increase more than expected our ability to generate or increase
our revenue could be reduced and we may not be able to implement our business strategy. Our future financial performance and our ability to
commercialize our drug candidates, if approved, and compete effectively will depend, in part, on our ability to effectively manage the future
development and changes to our business.

Additionally,  to  help  manage  the  evolving  needs,  we  may  utilize  the  services  of  outside  vendors  or  consultants  to  perform  tasks
including clinical trial management, statistics and analysis, regulatory affairs, formulation development, chemistry, manufacturing, controls,
and other pharmaceutical development functions. Our growth strategy may also entail expanding our group of contractors or consultants to
implement these tasks going forward. Because we rely on a substantial number of consultants, effectively outsourcing many key functions of
our  business,  we  will  need  to  be  able  to  effectively  manage  these  consultants  to  ensure  that  they  successfully  carry  out  their  contractual
obligations  and  meet  expected  deadlines.  However,  if  we  are  unable  to  effectively  manage  our  outsourced  activities  or  if  the  quality  or
accuracy of the services provided by consultants is compromised for any reason, our clinical trials may be extended, delayed or terminated,
and  we  may  not  be  able  to  obtain  regulatory  approval  for  our  product  candidates  or  otherwise  advance  our  business.  There  can  be  no
assurance  that  we  will  be  able  to  manage  our  existing  consultants  or  find  other  competent  outside  contractors  and  consultants  on
economically reasonable terms, or at all. If we are not able to effectively expand our organization by hiring new employees and expanding
our  groups  of  consultants  and  contractors  when  needed,  we  may  be  unable  to  successfully  implement  the  tasks  necessary  to  achieve  our
research, development and commercialization goals.

Certain anti-takeover provisions in our governing documents and Delaware law could make a third-party acquisition of us difficult. This
could limit the price investors might be willing to pay in the future for our common stock.

Certain provisions in our amended and restated certificate of incorporation and restated bylaws may make it more difficult for a third
party to acquire us, or discourage a third party from attempting to acquire or control us and may limit the price that certain investors might be
willing to pay in the future for shares of our common stock. For example, our amended and restated certificate of incorporation allows us to
issue  preferred  stock  without  the  approval  of  our  stockholders,  the  issuance  of  which  could  decrease  the  amount  of  earnings  and  assets
available for distribution to, or affect the rights and powers, including voting rights, of our common stockholders. In certain circumstances,
such issuance could have the effect of decreasing the market price of our common stock. In addition, our restated bylaws eliminate the right
of  stockholders  to  call  a  special  meeting  of  stockholders,  which  could  make  it  more  difficult  for  stockholders  to  effect  certain  corporate
actions. Any of these provisions could also have the effect of delaying or preventing a change in control.

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On July 18, 2014, the Board of Directors declared a distribution of one right for each outstanding share of common stock. The rights
may have certain anti-takeover effects. The rights will cause substantial dilution to a person or group that attempts to acquire us on terms not
approved  by  the  Board  of  Directors  unless  the  offer  is  conditioned  on  a  substantial  number  of  rights  being  acquired.  However,  the  rights
should not interfere with any merger, statutory share exchange or other business combination approved by the Board of Directors since the
rights may be terminated by us upon resolution of the Board of Directors. Thus, the rights are intended to encourage persons who may seek to
acquire control of the Company to initiate such an acquisition through negotiations with the Board of Directors. However, the effect of the
rights may be to discourage a third party from making a partial tender offer or otherwise attempting to obtain a substantial equity position in
the  equity  securities  of,  or  seeking  to  obtain  control  of,  the  Company.  To  the  extent  any  potential  acquirers  are  deterred  by  the  rights,  the
rights may have the effect of preserving incumbent management in office.

Our ability to utilize our net operating loss carryforwards and certain other tax attributes may be limited.

Under Section 382 of the Internal Revenue Code of 1986, as amended, if a corporation undergoes an ownership change (generally
defined as a greater than 50% change (by value) in the ownership of its equity over a three-year period), the corporation’s ability to use its
pre-change net operating loss carryforwards and certain other pre-change tax attributes to offset its post-change income may be limited. We
may have experienced such ownership changes in the past, and we may experience ownership changes in the future as a result of shifts in our
stock  ownership,  some  of  which  are  outside  our  control.  As  of  December  31,  2022,  we  had  federal  net  operating  loss  carryforwards  of
approximately  $1.4  billion,  and  our  ability  to  utilize  those  net  operating  loss  carryforwards  could  be  limited  by  an  ownership  change  as
described above, which could result in increased tax liability to us. In addition, pursuant to the Tax Act, we may not use net operating loss
carry-forwards to reduce our taxable income in any year by more than 80%, and we may not carry back any net operating losses to prior
years.  On  March  27,  2020,  the  Coronavirus  Aid,  Relief,  and  Economic  Security  (CARES)  Act  was  signed  by  President  Trump.  Certain
provisions of the CARES Act alter the rules regarding net-operating losses for such losses arising in 2018, 2019 and 2020. Such losses may
be carried back for five years. We cannot assure you, however, of our ability to utilize these favorable offset rules within the applicable time
period. These rules apply regardless of the occurrence of an ownership change.

Certain of our executive officers, directors, principal stockholders and their affiliates maintain the ability to exercise significant influence
over our company and all matters submitted to stockholders for approval.

Certain of our executive officers, directors and stockholders own more than 5% of our outstanding common stock and, together with
their affiliates and related persons, beneficially own a significant percentage of our capital stock. If these stockholders were to choose to act
together, they would be able to influence our management and affairs and the outcome of matters submitted to our stockholders for approval,
including the election of directors and any sale, merger, consolidation, or sale of all or substantially all of our assets. This concentration of
voting  power  could  delay  or  prevent  an  acquisition  of  our  company  on  terms  that  other  stockholders  may  desire.  In  addition,  this
concentration of ownership might adversely affect the market price of our common stock by:

● delaying, deferring or preventing a change of control of us;
● impeding a merger, consolidation, takeover or other business combination involving us; or
● discouraging a potential acquirer from making a tender offer or otherwise attempting to obtain control of us.

Our internal information technology systems, or those of our third-party CROs, CMOs, or other contractors or consultants, may fail or
suffer  security  breaches,  which  could  result  in  a  material  disruption  of  our  drug  candidates’  development  programs  and  our
commercialization of any products for which we receive regulatory approval.

Despite the implementation of security measures, our internal information technology systems and those of our third-party CROs,
CMOs, and other contractors and consultants are vulnerable to damage from computer viruses, unauthorized access, cyber-attacks or cyber-
intrusions over the Internet, natural disasters, terrorism, war and telecommunication and electrical failures. Although we have been the targets
of  cyber-attacks  and  cyber-intrusions,  the  impact  on  our  operations  and  financial  condition  has  not  been  material.  We  expect  such
cybersecurity threats to continue and become more sophisticated, even more so due to the conflict between Russia and Ukraine. A significant
cyber-attack  or  cyber-intrusion  could  cause  our  systems  to  fail,  leakage  of  confidential  information,  or  business  interruption,  which  could
result in a material disruption of our operations, financial loss, or reputational harm. For example, the loss of clinical trial data for our drug
candidates could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the data. We
have  invested  in  protections  and  monitoring  practices  of  our  data  and  information  technology  systems  to  reduce  these  risks  and  expect  to
continue do so as our information technology systems increase in magnitude and complexity. However, there can be no assurance that our
efforts and investments will prevent breakdowns or breaches in our systems that could adversely affect our business.

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Unfavorable global economic conditions could adversely affect our business, financial condition or results of operations.

Our  results  of  operations  could  be  adversely  affected  by  general  conditions  in  the  global  economy  and  in  the  global  financial
markets. Key national economies, including the United States, have been affected from time to time by economic downturns or recessions,
supply chain constraints, rising inflation, restricted credit, poor liquidity, reduced corporate profitability, debt, equity and foreign exchange
market  volatility,  bankruptcies,  rising  interest  rates,  and  overall  uncertainty  with  respect  to  the  economy.  Increasing  interest  rates  in  the
United  States  to  respond  to  inflationary  pressures  and  market  volatility  could  negatively  impact  our  results  of  operations  and  financial
condition. In addition, increased interest rates or a general economic downturn or recession could reduce our ability to raise additional capital
when needed on acceptable terms, if at all. A weak or declining economy, supply disruptions or international trade disputes could also strain
our third-party suppliers, possibly resulting in supply disruption.

Furthermore, the COVID-19 pandemic has caused extreme volatility and disruptions in the capital and credit markets. Likewise, the
capital and credit markets may be adversely affected by the recent conflict between Russia and Ukraine, the possibility of a wider European
or global conflict, and global sanctions imposed in response thereto. A severe or prolonged economic downturn could result in a variety of
risks  to  our  business,  including,  weakened  demand  for  our  drug  candidates  and  our  ability  to  raise  additional  capital  when  needed  on
acceptable terms, if at all. A weak or declining economy could also strain our suppliers, possibly resulting in supply disruption, or cause our
customers to delay making payments for our marketed product and services. We cannot anticipate all of the ways in which the foregoing, and
the current economic climate and financial market conditions, could adversely impact our business.

Our employees, principal investigators, CROs, CMOs and consultants may engage in misconduct or other improper activities, including
non-compliance  with  regulatory  standards  and  requirements  and  insider  trading,  which  could  have  a  material  adverse  effect  on  our
business.

We  are  exposed  to  the  risk  that  our  employees,  principal  investigators,  CROs,  CMOs,  and  consultants  may  engage  in  fraudulent
conduct  or  other  illegal  activity.  Misconduct  by  these  parties  could  include  intentional  failures  to  comply  with  FDA  regulations,  provide
accurate information to the FDA, comply with manufacturing standards we have established, comply with federal and state healthcare fraud
and abuse laws and regulations, report financial information or data accurately or disclose unauthorized activities to us. In particular, sales,
marketing  and  business  arrangements  in  the  healthcare  industry  are  subject  to  extensive  laws  and  regulations  intended  to  prevent  fraud,
misconduct, kickbacks, self-dealing and other abusive practices. These laws and regulations may restrict or prohibit a wide range of pricing,
discounting, marketing and promotion, sales commission, customer incentive programs and other business arrangements. Activities subject to
these laws also involve the improper use of information obtained in the course of clinical trials or creating fraudulent data in our pre-clinical
studies  or  clinical  trials,  which  could  result  in  regulatory  sanctions  and  cause  serious  harm  to  our  reputation.  We  have  adopted  a  code  of
ethics  applicable  to  all  of  our  employees  and  have  implemented  a  compliance  program,  but  it  is  not  always  possible  to  identify  and  deter
misconduct  by  employees  and  other  third  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. In addition, we are subject to the risk that a person could allege such fraud or other
misconduct, even if none occurred. If any such actions are instituted against us, regardless of the outcome, our reputation and our business
may suffer. If we are not successful in defending ourselves or asserting our rights, those actions could lead to imposition of civil, criminal and
administrative penalties, damages, monetary fines, possible exclusion from participation in Medicare, Medicaid and other federal healthcare
programs, contractual damages, reputational harm, diminished profits and future earnings, and curtailment of our operations, any of which
could adversely affect our ability to operate our business.

We may acquire businesses or drugs, or form strategic alliances, in the future, and we may not realize the benefits of such acquisitions.

We may acquire additional businesses or drugs, form strategic alliances or create joint ventures with third parties that we believe will
complement  or  augment  our  existing  business.  If  we  acquire  businesses  with  promising  markets  or  technologies,  we  may  not  be  able  to
realize  the  benefit  of  acquiring  such  businesses  if  we  are  unable  to  successfully  integrate  them  with  our  existing  operations  and  company
culture. We may encounter numerous difficulties in developing, manufacturing and marketing any new products resulting from a strategic
alliance or acquisition that delay or prevent us from realizing their expected benefits or enhancing our business. We cannot assure you that,
following any such acquisition, we will achieve the expected synergies to justify the transaction.

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We may be subject to adverse legislative or regulatory tax changes that could negatively impact our financial condition.

The  rules  dealing  with  U.S.  federal,  state  and  local  income  taxation  are  constantly  under  review  by  persons  involved  in  the
legislative process and by the IRS and the U.S. Treasury Department. Changes to tax laws (which changes may have retroactive application)
could adversely affect our stockholders or us. In recent years, many such changes have been made and changes are likely to continue to occur
in the future. We cannot predict whether, when, in what form, or with what effective dates, tax laws, regulations and rulings may be enacted,
promulgated or decided, which could result in an increase in our, or our stockholders, tax liability or require changes in the manner in which
we operate in order to minimize increases in our tax liability.

On  December  22,  2017,  legislation  commonly  referred  to  as  the  Tax  Act  was  signed  into  law  and  is  generally  effective  after
December  31,  2017.  The  Tax  Act  makes  significant  changes  to  the  United  States  federal  income  tax  rules  for  taxation  of  individuals  and
business entities. Most of the changes applicable to individuals are temporary and apply only to taxable years beginning after December 31,
2017 and before January 1, 2026. For corporations, the Tax Act reduces the top corporate income tax rate to 21% and repeals the corporate
alternative  minimum  tax,  limits  the  deduction  for  net  interest  expense,  limits  the  deduction  for  net  operating  losses  and  eliminates  net
operating loss carrybacks, modifies or repeals many business deductions and credits, shifts the United States toward a more territorial tax
system, and imposes new taxes to combat erosion of the U.S. federal income tax base. The Tax Act makes numerous other large and small
changes to the federal income tax rules that may affect potential investors and may directly or indirectly affect us. We continue to examine
the impact this tax reform legislation may have on our business. However, the effect of the Tax Act on us, whether adverse or favorable, is
uncertain, and may not become evident for some period of time. This document does not discuss such legislation or the manner in which it
might affect us or purchasers of our common stock. Prospective investors are urged to consult with their legal and tax advisors with respect to
the Tax Act and any other regulatory or administrative developments and proposals, and their potential effects on them based on their unique
circumstances.

Risks Related to the COVID-19 Pandemic

The  COVID-19  pandemic  could  have  a  material  adverse  effect  on  our  business  if  new  variants  continue  to  circulate  and  government
control measures are reinstated.

The COVID-19 pandemic presented substantial public health challenges and negatively impacted the global economy, global supply
chains,  and  the  global  healthcare  system,  including  the  conduct  of  clinical  trials  in  the  U.S.  and  other  parts  of  the  world.  New  variants
continue  to  circulate,  and  uncertainty  remains  as  to  whether  restrictions  that  have  been  lifted  will  be  reinstated  or  new  measures  will  be
implemented  to  address  the  spread  of  new  variants.  The  extent  to  which  the  COVID-19  pandemic  continues  to  impact  our  business  and
operating  results  will  depend  on  future  developments  that  cannot  be  accurately  predicted.  Should  the  COVID-19  pandemic  worsen  and
government restrictions be reinstated, our business operations could be materially delayed or interrupted. For instance, our supply chain may
be disrupted; health authority inspections of clinical sites, marketing application sponsor, CROs, or manufacturing facilities or review of our
regulatory submissions may be delayed; and our commercialization efforts may be impacted.

In addition, we may encounter delays in our clinical development program. The majority of our clinical trials involve patients with
multiple sclerosis who may be at higher risk of infection.  These patients are thus more likely to be subject to travel restrictions and self-
quarantining  and  may  be  more  likely  to  withdraw  from  our  clinical  trials  or  unable  to  complete  study  assessments,  which  may  affect  our
ability to meet our projected timelines. Further, patients and healthcare providers have raised concerns that B-cell targeted agents, like anti-
CD20 antibodies, may increase the risk of acquiring COVID-19 or lead to more severe complications or outcomes upon infection, including
death, which could have a material adverse effect on our product and product candidates by negatively impacting:

● the results of clinical trials;
● the regulatory review and approval;
● the labeling, if approved, including restrictions on use or other warnings, or
● their acceptance among patients, healthcare providers, and payors, if approved.

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The pandemic also may adversely affect our ability to complete ongoing clinical trials or conduct new trials. Some factors from the
COVID-19  outbreak  that  may  delay  or  otherwise  adversely  affect  our  clinical  trial  programs,  as  well  as  adversely  impact  our  business
generally, include, among other things:

● delays  or  difficulties  in  clinical  site  initiation,  including  difficulties  in  recruiting  and  retaining  clinical  sites,  impacts  on
compliance  with  clinical  study  protocols,  delays  enrolling  patients  in  our  clinical  trials,  decreased  enrollment  in  our  clinical
trials or increased rates of patients withdrawing from our clinical trials following enrollment

● impacts to clinical results, including an increased number of observed adverse events, as a result of participants enrolled in our

clinical trials contracting COVID-19;

● interruption  of,  or  delays  in  receiving,  supplies  of  our  product  and  product  candidates  from  our  contract  manufacturing
organizations due to staffing shortages, production slowdowns or stoppages or interruption in global shipping that may affect
the transport of clinical trial materials;

● disruptions  in  or  delays  to  regulatory  reviews,  responses,  inspections,  or  other  regulatory  activities,  including  review  of
marketing  applications  and  approvals  of  protocol  changes  or  amendments  to  SPAs,  as  a  result  of  the  spread  of  COVID-19
affecting the operations of the FDA or other regulatory authorities;

● changes  in  local  regulations  as  part  of  a  response  to  the  COVID-19  pandemic  which  may  require  us  to  change  the  ways  in
which clinical trials are conducted, which may result in unexpected costs, or to discontinue the clinical trials altogether; and

● negative effects on the quality, completeness, integrity, interpretability, and cost of our clinical study data.

The  potential  disruptions  and  other  impacts  discussed  above  and  other  consequences  of  the  COVID-19  pandemic  could result  in
missed  study  visits  or  study  procedures  in  our  clinical  trials,  which  could  lead  to  an  abundance  of  protocol  deviations  that  impact  the
interpretability  of  the  trial  results.  A  significant  number  of  deviations  may  call  into  question  whether  the  execution  of  a  clinical  trial  was
consistent with the protocol, which is of particular importance where study designs were agreed to as part of a SPA, as in the case of our
Phase 3 clinical trial for ublituximab in RMS. In extreme cases, significant deviations from the protocol may be considered a violation of the
SPA.  The  impacts  of  COVID-19  on  clinical  studies  described  above  may  be  greater  in  geographies  outside  the  U.S.,  including  in  Eastern
European countries where we have a number of study sites for ULTIMATE I and II.

In  the  event  government-imposed  restrictions  related  to  COVID-19  that  have  been  lifted  are  reinstated  or  new  measures  are
implemented to address the spread of new variants, our ability to successfully commercialize our product or any of our product candidates for
which we in the future obtain regulatory approval also may be adversely impacted. In response to the COVID-19 pandemic, many healthcare
institutions reduced access of pharmaceutical and biotechnology companies to healthcare providers as part of their safety measures. Should
limitations  on  access  continue,  our  commercialization  activities,  including  the  manner  in  which  our  field  teams  engage  with  healthcare
providers and facilities, may limit our ability to provide product education and information, which could slow adoption and impact sales.

We will continue to monitor the potential impact of COVID-19 on our business; however, the full extent to which the COVID-19
pandemic  may  directly  or  indirectly  impact  the  progress  of  our  current  and  planned  trials  will  depend  on  future  developments  that  are
uncertain and cannot be accurately predicted.

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General Risks

Risks Related to Our Common Stock and Being a Publicly-Traded Company

Our stock price is, and we expect it to remain, volatile, which could limit investors’ ability to sell stock at a profit.

The trading price of our common stock has been and is likely to continue to be highly volatile and subject to wide fluctuations in

price in response to various factors, many of which are beyond our control. These factors include:

● reception and success of BRIUMVI in the market;
● publicity regarding actual or potential clinical results relating to our product or products under development by our competitors

or us;

● delay or failure in initiating, completing or analyzing nonclinical or clinical trials or the unsatisfactory design or results of these

trials;

● achievement or rejection of regulatory approvals by us or our competitors;
● any  delay  in  our  regulatory  review  for  products  and  product  candidates  we  may  develop,  and  any  adverse  development  or
perceived adverse development with respect to the applicable regulatory authority’s review of such filings, including without
limitation a change to the projected approval date, scheduling of an advisory committee meeting or issuance of a “refusal to
file” letter;

● announcements of technological innovations or new commercial products by our competitors or us;
● developments concerning proprietary rights, including patents;
● developments concerning our collaborations;
● regulatory developments in the United States and foreign countries;
● economic  or  other  crises  and  other  external  factors  such  as  the  disruptions  in  the  global  economy  caused  by  the  COVID-19

pandemic and the conflict between Russia and Ukraine;

● period-to-period fluctuations in our revenues and other results of operations;
● failure to meet our revenue projections or guidance;
● changes in financial estimates by securities analysts; and
● sales of our common stock by us.

We will not be able to control many of these factors, and we believe that period-to-period comparisons of our financial results will

not necessarily be indicative of our future performance.

In addition, the stock market in general, and the market for biotechnology companies in particular, has experienced extreme price
and volume fluctuations that may have been unrelated or disproportionate to the operating performance of individual companies. These broad
market and industry factors may seriously harm the market price of our common stock, regardless of our operating performance. As a result
of this volatility, investors may not be able to sell their common stock at or above the price paid for the shares.

Because we do not anticipate paying any cash dividends on our capital stock in the foreseeable future, capital appreciation, if any, will be
the sole source of gain for our stockholders.

We have never declared or paid cash dividends on our capital stock. We currently intend to retain all of our future earnings, if any, to
finance  the  growth  and  development  of  our  business.  In  addition,  under  the  Amended  Loan  Agreement  with  Hercules,  we  are  currently
restricted from paying cash dividends, and we expect these restrictions to continue in the future. Furthermore, the terms of any future debt
agreements may continue to preclude us from paying dividends. As a result, capital appreciation, if any, of our common stock will be the sole
source of gain for our stockholders for the foreseeable future.

An active trading market for our common stock may not be sustained, and investors may not be able to resell their shares at or above the
price they paid.

Although  we  have  listed  our  common  stock  on  the  Nasdaq  Capital  Market,  an  active  trading  market  for  our  shares  may  not  be
sustained. In the absence of an active trading market for our common stock, investors may not be able to sell their common stock at or above
the price at which they acquired their shares or at the time that they would like to sell. An inactive trading market may also impair our ability
to raise capital to continue to fund operations by selling shares and may impair our ability to acquire other companies or technologies by
using our shares as consideration.

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If equity research analysts do not publish research or reports about our business or if they publish negative evaluations of or downgrade
our common stock, the price of our common stock could decline.

The trading market for our common stock relies in part on the research and reports that equity research analysts publish about us or
our  business.  We  do  not  control  these  analysts.  If  one  or  more  of  the  analysts  covering  our  business  downgrade  their  evaluations  of  our
common stock, the price of our common stock could decline. If one or more of these analysts cease to cover our common stock, we could
lose visibility in the market for our common stock, which in turn could cause our common stock price to decline.

We incur significant increased costs as a result of operating as a public company, and our management is required to devote substantial
time to compliance initiatives.

As a public company, we incur significant legal, accounting and other expenses under the Sarbanes-Oxley Act of 2002, as well as
rules  subsequently  implemented  by  the  SEC,  and  the  rules  of  any  stock  exchange  on  which  we  are  listed.  These  rules  impose  various
requirements  on  public  companies,  including  requiring  establishment  and  maintenance  of  effective  disclosure  and  financial  controls  and
appropriate  corporate  governance  practices.  Our  team  has  devoted  and  will  continue  to  devote  a  substantial  amount  of  time  to  these
compliance initiatives. Moreover, these rules and regulations increase our legal and financial compliance costs and make some activities more
time-consuming and costly.

The Sarbanes-Oxley Act of 2002 requires, among other things, that we maintain effective internal control over financial reporting
and  disclosure  controls  and  procedures.  As  a  result,  we  are  required  to  periodically  perform  an  evaluation  of  our  internal  control  over
financial reporting to allow management to report on the effectiveness of those controls, as required by Section 404 of the Sarbanes-Oxley
Act. Additionally, our independent auditors are required to perform a similar evaluation and report on the effectiveness of our internal control
over  financial  reporting.  These  efforts  to  comply  with  Section  404  will  require  the  commitment  of  significant  financial  and  managerial
resources. While we anticipate maintaining the integrity of our internal control over financial reporting and all other aspects of Section 404,
we cannot be certain that a material weakness will not be identified when we test the effectiveness of our control systems in the future. If a
material weakness is identified, we could be subject to sanctions or investigations by the SEC or other regulatory authorities, which would
require additional financial and management resources, costly litigation or a loss of public confidence in our internal control over financial
reporting, which could have an adverse effect on the market price of our stock.

Volatility  in  the  price  of  our  common  stock  may  subject  us  to  securities  and  shareholder  derivative  litigation,  which  could  cause  us  to
incur substantial costs and divert management’s attention, financial resources and other company assets.

In the past, securities class action and shareholder derivative litigation has often been brought against a company following periods
of volatility in the market price of its securities. This risk is especially relevant for us because pharmaceutical companies have experienced
significant stock price volatility in recent years. Past lawsuits and any future lawsuits to which we may become a party are subject to inherent
uncertainties and will likely be expensive and time-consuming to investigate, defend, and resolve, and will divert our management’s attention
and financial and other resources. The outcome of litigation is necessarily uncertain, and we could be forced to expend significant resources
in  the  defense  of  these  and  other  suits  in  which  we  may  not  prevail.  Any  litigation  to  which  we  are  a  party  may  result  in  an  onerous  or
unfavorable judgment that may not be reversed upon appeal or in payments of substantial monetary damages or fines, or we may decide to
settle  this  or  other  lawsuits  on  similarly  unfavorable  terms,  which  could  adversely  affect  our  business,  financial  condition,  results  of
operations or stock price.

Future sales of our common stock, including by us or our directors and executive officers or shares issued upon the exercise of currently
outstanding options, could cause our stock price to decline.

A substantial portion of our outstanding common stock can be traded without restriction at any time. In addition, a portion of our
outstanding  common  stock  is  currently  restricted  as  a  result  of  federal  securities  laws,  but  can  be  sold  at  any  time  subject  to  applicable
volume limitations. As such, sales of a substantial number of shares of our common stock in the public market could occur at any time. These
sales,  or  the  perception  in  the  market  that  the  holders  of  a  large  number  of  shares  intend  to  sell  shares,  by  us  or  others,  could  reduce  the
market price of our common stock or impair our ability to raise adequate capital through the sale of additional equity securities. In addition,
we have a significant number of shares that are subject to outstanding options. The exercise of these options and the subsequent sale of the
underlying  common  stock  could  cause  a  further  decline  in  our  stock  price.  These  sales  also  might  make  it  difficult  for  us  to  sell  equity
securities in the future at a time and at a price that we deem appropriate. We cannot predict the number, timing or size of future issuances or
the effect, if any, that any future issuances may have on the market price for our common stock.

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ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 2. PROPERTIES.

We maintain corporate and executive space in New York, New York, Edison, New Jersey and Morrisville, North Carolina. We are
also  currently  leasing  small  office  space  in  Boca  Raton,  Florida.  We  believe  that  our  existing  facilities  are  adequate  to  meet  our  current
requirements. We do not own any real property.

ITEM 3. LEGAL PROCEEDINGS.

In  July  2022,  a  putative  securities  class  action  (the  Class  Action  Lawsuit)  complaint  was  filed  in  the  US  District  Court  for  the
Southern  District  of  New  York  against  the  Company  and  two  of  its  officers,  purportedly  on  behalf  of  all  shareholders  who  purchased  or
otherwise acquired TG Therapeutics common stock between January 15, 2020 and May 31, 2022 (the Class Period). The case was captioned
Shapiro v. TG Therapeutics, Inc., et al., Case No. 1:22-cv-06106. The complaint alleged that the Company and the named officers violated
the  federal  securities  laws  by  allegedly  making  materially  false  and  misleading  statements  throughout  the  Class  Period  concerning  the
Company’s  business  and  operations  relating  to  ublituximab  and  umbralisib,  and  sought  monetary  damages.    In  January  2023,  the  Court
dismissed the action in full, with prejudice.

ITEM 4. MINE SAFETY DISCLOSURES.

None.

PART II

ITEM  5.  MARKET  FOR  REGISTRANT’S  COMMON  EQUITY,  RELATED  STOCKHOLDER  MATTERS  AND  ISSUER
PURCHASES OF EQUITY SECURITIES.

Market Information

Our common stock is listed on the Nasdaq Capital Market and trades under the symbol “TGTX”.

Holders

The number of record holders of our common stock as of February 17, 2023 was 218.

Dividends

We have never declared or paid any cash dividends on our common stock and do not anticipate paying any cash dividends in the

foreseeable future. Any future determination to pay dividends will be at the discretion of our board of directors.

Securities Authorized for Issuance Under Equity Compensation Plans

The following table provides information as of December 31, 2022, regarding the securities authorized for issuance under our equity
compensation  plans,  the  TG  Therapeutics,  Inc.  Amended  and  Restated  2012  Incentive  Plan  (the  2012  Incentive  Plan)  and  the  TG
Therapeutics,  Inc.  2022  Incentive  Plan  (the  2022  Incentive  Plan).  There  were  no  additional  shares  available  to  be  issued  under  the  2012
Incentive Plan.

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Plan Category

Equity Compensation Plan Information

Number of
securities to be
issued upon
exercise of
outstanding
options

Weighted-average
exercise price of
outstanding
options

Number of
securities
remaining
available for
future issuance
under equity
compensation
plans (excluding
securities reflected
in column 1)

Equity compensation plans approved by security holders
Equity compensation plans not approved by security holders
Total

 5,135,685
 —
 5,135,685

$

$

 7.10
 —
 7.10

 12,251,485
 —
 12,251,485

For information about all of our equity compensation plans see Note 5 to our Consolidated Financial Statements included in this

report.

COMMON STOCK PERFORMANCE GRAPH

The  following  graph  compares  the  cumulative  total  stockholder  return  on  our  common  stock  for  the  period  from  December  31,
2017 through December 31, 2022, with the cumulative total return over such period on (i) the U.S. Index of The Nasdaq Stock Market and
(ii) the Biotechnology Index of The Nasdaq Stock Market. The graph assumes an investment of $100 on December 31, 2017, in our common
stock  (at  the  adjusted  closing  market  price)  and  in  each  of  the  indices  listed  above,  and  assumes  the  reinvestment  of  all  dividends.
Measurement points are December 31 of each year.

*     $100 invested on December 31, 2017 in stock or index, including reinvestment of dividends. Fiscal Years ending December 31.

ITEM 6. REMOVED AND RESERVED

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ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS.

The following discussion and analysis contains forward-looking statements about our plans and expectations of what may happen in
the future. Forward-looking statements are based on a number of assumptions and estimates that are inherently subject to significant risks and
uncertainties, and our results could differ materially from the results anticipated by our forward-looking statements as a result of many known
or  unknown  factors,  including,  but  not  limited  to,  those  factors  discussed  in  “Risk  Factors.”  See  also  the  “Special  Cautionary  Notice
Regarding Forward-Looking Statements” set forth at the beginning of this report.

You should read the following discussion and analysis in conjunction with “Item 8. Financial Statements and Supplementary Data,”

and our consolidated financial statements beginning on page F-1 of this report.

Overview

TG Therapeutics is a fully-integrated, commercial stage, biopharmaceutical company focused on the acquisition, development and
commercialization of novel treatments for B-cell diseases. In addition to a research pipeline including several investigational medicines, TG
has  received  approval  from  the  FDA  for  BRIUMVI  (ublituximab-xiiy)  for  the  treatment  of  adult  patients  with  RMS,  to  include  clinically
isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults. We also actively evaluate complementary
products, technologies and companies for in-licensing, partnership, acquisition and/or investment opportunities.

On February 5, 2021, we announced that the FDA granted accelerated approval of umbralisib, the Company’s PI3K delta inhibitor,
then commercially referred to as UKONIQ, for the treatment of adult patients with relapsed or refractory MZL who have received at least one
prior  anti-CD20  based  regimen  and  adult  patients  with  relapsed  or  refractory  FL  who  have  received  at  least  three  prior  lines  of  systemic
therapy. On April 15, 2022, we announced the voluntary withdrawal of UKONIQ from sale for the approved indications. During the year
ended  December  31,  2022,  our  only  sources  of  product  revenues  were  from  the  sales  of  UKONIQ.  Product  revenues  are  recorded  net  of
estimates  of  variable  consideration.  For  further  discussion  of  our  revenue  recognition  policy,  see  “Critical  Accounting  Policies  and
Significant Judgements and Estimates” below.

Cost of product revenue consists primarily of materials and third-party manufacturing costs, as well as freight and royalties owed to
our  licensing  partner  for  UKONIQ  sales.  Based  on  our  policy  to  expense  costs  associated  with  the  manufacture  of  our  products  prior  to
regulatory  approval,  the  manufacturing  costs  of  UKONIQ  units  recognized  as  revenue  during  the  year  ended  December  31,  2022  were
expensed prior to receipt of FDA approval on February 5, 2021, and therefore are not included in costs of product revenue during the current
period.

Our  other  research  and  development  expenses  consist  primarily  of  expenses  relating  to  the  design,  development,  manufacture,
testing and enhancement of our drug candidates and technologies, milestone expenses related to in-licensing of new product candidates, fees
paid  to  consultants  and  outside  service  providers  for  clinical  and  laboratory  development,  personnel  expenses  and  other  facilities-related
expenses.  We  expense  our  research  and  development  costs  as  they  are  incurred.  Research  and  development  expenses  for  the  years  ended
December 31, 2022, 2021 and 2020 were approximately $112.1 million, $198.5 million and $151.9 million respectively, excluding noncash
compensation expenses related to research and development.

The following table sets forth the research and development expenses per project, exclusive of noncash compensation expenses, for

the periods presented.

(in thousands)
Ublituximab
Umbralisib
Early Clinical Pipeline & Pre-Clinical

Total

$

2022
 59,307
 38,468
 14,353
$  112,128

2021
$  112,522
 63,033
 22,977
$  198,532

$

2020
 72,400
 66,495
 13,039
$  151,934

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Our  selling,  general  and  administrative  expenses  consist  primarily  of  expenses  related  to  the  commercial  launch  of  our  products,
including salaries and related expenses for our commercialization team and commercial development activities. Other selling, general and
administrative expenses consist of executive, finance and other administrative personnel, recruitment expenses, professional fees and other
corporate expenses, including investor relations, legal activities and facilities-related expenses.

Our  results  of  operations  include  noncash  compensation  expenses  as  a  result  of  the  grants  of  restricted  stock  and  stock  options.
Compensation expense for awards of restricted stock and stock options granted to employees and directors represents the fair value of the
award recorded over the respective vesting periods of the individual awards. The expense is included in the respective categories of expense
in the consolidated statements of operations. We expect to continue to incur significant noncash compensation expenses.

We  recognize  all  share-based  payments  to  employees  and  non-employee  directors  (as  compensation  for  service)  as  noncash
compensation expense in the consolidated financial statements based on the fair values of such payments. Stock-based compensation expense
recognized  each  period  is  based  on  the  value  of  the  portion  of  share-based  payment  awards  that  is  ultimately  expected  to  vest  during  the
period. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those
estimates.

RESULTS OF OPERATIONS

Comparison of the Years Ended December 31, 2022 and 2021

The following table summarizes the results of operations for the years ended December 31, 2022 and 2021:

(in thousands)

Product revenue, net
License Revenue

Total Revenue

Costs and expenses:

Cost of product revenue
Research and development:
Noncash compensation
Other research and development

Total research and development

Selling, General and administrative:

Noncash compensation
Other selling, general and administrative

Total selling, general and administrative

Total costs and expenses

Interest expense
Other income

Total other expense, net

Net Loss

2022

2021

$

$

 2,633
 152
 2,785

$

$

265

 13,224
 112,128
 125,352

 5,961
 64,046
 70,007

 195,624

 10,191
 (4,695)
 5,496

 6,537
 152
 6,689

 790

 24,047
 198,532
 222,579

 37,227
 90,863
 128,090

 351,459

 5,638
 (2,307)
 3,331

$

 (198,335)

$

 (348,101)

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Revenues. Total revenue for the year ended December 31, 2022 decreased compared to the comparable period ended December 31,
2021 due to a decrease in net product revenues resulting from the voluntary withdrawal from the U.S. market of our sole commercial product
UKONIQ.

Cost of Product Revenue. Cost of product revenue for the year ended December 31, 2022 decreased compared to the comparable
period  ended  December  31,  2021  due  to  the  stoppage  of  product  sales  resulting  from  the  withdrawal  from  the  U.S.  market  of  our  sole
commercial  product  UKONIQ.  During  the  year  ended  December  31,  2022  the  cost  of  product  revenue  consists  primarily  of  freight  and
royalties on net sales of UKONIQ owed to our licensing partner. Based on our policy to expense costs associated with the manufacture of our
products prior to regulatory approval, the manufacturing costs of UKONIQ units recognized as revenue during the year ended December 31,
2022  were  expensed  as  research  and  development  expenses  prior  to  receipt  of  FDA  approval  on  February  5,  2021,  and  therefore  are  not
included in costs of product revenue during the current period.

Noncash  Compensation  Expense  (Research  and  Development).  Noncash  compensation  expense  (research  and  development)
related  to  equity  incentive  grants  totaled  $13.2  million  for  the  year  ended  December  31,  2022,  as  compared  to  $24.0  million  during  the
comparable period in 2021. The decrease in noncash compensation expense was primarily due to forfeitures of restricted stock during the
year ended December 31, 2022, as well as an overall decreased headcount during the year ended December 31, 2022 compared to the year
ended December 31, 2021.

Other Research and Development Expense. Other research and development expense decreased for the year ended December 31, 
2022, by approximately $86.4 million to $112.1 million as compared to the prior year ended December 31, 2021. The decrease in research 
and development expense is primarily attributable to reduced clinical trial related expenses, headcount, lower fees paid to consultants and 
outside service providers, license milestones and decreased manufacturing expense during the year ended December 31, 2022.  

Noncash  Compensation  Expense  (Selling,  General  and  Administrative).  Noncash  compensation  expense  (selling,  general  and
administrative) related to equity incentive grants totaled $6.0 million for the year ended December 31, 2022, as compared to $37.2 million
during the comparable period in 2021. The decrease in noncash compensation expense was primarily due to forfeitures of restricted stock
during the year ended December 31, 2022, as well as an overall decreased headcount during the year ended December 31, 2022 compared to
the year ended December 31, 2021.

Other  Selling,  General  and  Administrative.  Other  selling,  general  and  administrative  expenses  decreased  for  the  year  ended
December 31, 2022, by approximately $26.8 million to $64.0 million as compared to the prior year ended December 31, 2021. The decrease
was  due  primarily  to  lower  other  selling,  general  and  administrative  costs,  as  a  result  of  our  withdrawal  of  UKONIQ  and  decreased
headcount, during the period ended December 31, 2022.

Interest  Expense.  Interest  expense  for  the  year  ended  December  31,  2022  was  $10.2  million  compared  to  $5.6  million  for  the
comparable period ended December 31, 2021. The $4.6 million increase is mainly due to greater interest expense related to the Amended
Loan Agreement entered into in December 2021.

Other Income. Other income increased by $2.4 million to $4.7 million for the year ended December 31, 2022, as compared to $2.3
million for the year ended December 31, 2021. The increase is mainly due to greater interest income, as well as a research & development tax
credit refund received by our Australian subsidiary during the year ended December 31, 2022.

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Comparison of the Years Ended December 31, 2021 and 2020

The following table summarizes the results of operations for the years ended December 31, 2021 and 2020:

(in thousands)

Product revenue, net
License Revenue

Total Revenue

Costs and expenses:

Cost of product revenue
Research and development:
Noncash compensation
Other research and development

Total research and development

General and administrative:
Noncash compensation
Other selling, general and administrative

Total general and administrative

Total costs and expenses

Interest expense
Other income

Total other expense, net

Net Loss

2021

2020

$

$

 6,537
 152
 6,689

$

$

 790

 24,047
 198,532
 222,579

 37,227
 90,863
 128,090

 351,459

 5,638
 (2,307)
 3,331

 —
152
 152

 —

 13,962
 151,934
 165,896

 66,327
 41,523
 107,850

 273,746

 6,329
 (542)
 5,787

$

 (348,101)

$

 (279,381)

Revenues. Total revenue for the year ended December 31, 2021 increased compared to the comparable periods ended December 31,
2020 due to net product revenues from U.S. sales of our sole commercial product, UKONIQ, which was approved by the FDA on February 5,
2021.

Cost of Product Revenue. Cost of product revenue consists primarily of freight and royalties on net sales of UKONIQ owed to our
licensing partner. During the year ended December 31, 2021, the cost of product revenue was $0.8 million. Based on our policy to expense
costs associated with the manufacture of our products prior to regulatory approval, the manufacturing costs of UKONIQ units recognized as
revenue during the year ended December 31, 2021 were expensed as research and development expenses prior to receipt of FDA approval on
February 5, 2021, and therefore are not included in costs of product revenue during the current period.

Noncash  Compensation  Expense  (Research  and  Development).  Noncash  compensation  expense  (research  and  development)
related  to  equity  incentive  grants  totaled  $24.0  million  for  the  year  ended  December  31,  2021,  as  compared  to  $14.0  million  during  the
comparable  period  in  2020.  The  increase  in  noncash  compensation  expense  was  primarily  due  to  vesting  of  milestone-based  grants,  an
increase in research and development personnel and the vesting of grants at a higher stock price during the year ended December 31, 2021.

Other Research and Development Expense. Other research and development expense increased for the year ended December 31,

2021 by approximately $46.6 million to $198.5 million as compared to the comparable period ended December 31, 2020. The increase in
research and development expense is primarily attributable to increased manufacturing expense of approximately $34.4 million in preparation
for commercialization and for our Phase 3 clinical trials. Additionally, an increase in personnel expense of $9.5 million associated with the
buildout of our regulatory and late-stage development groups.

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Noncash  Compensation  Expense  (Selling,  General  and  Administrative).  Noncash  compensation  expense  (selling,  general  and
administrative) related to equity incentive grants totaled $37.2 million for the year ended December 31, 2021, as compared to $66.3 million
during the comparable period in 2020. The decrease in noncash compensation expense was primarily related to more milestone-based vesting
of restricted stock granted to executive personnel occurring during the year ended December 31, 2020.

Other  Selling,  General  and  Administrative.  Other  selling,  general  and  administrative  expenses  increased  for  the  year  ended
December 31, 2021 by approximately $49.3 million to $90.9 million as compared to the comparable period ended December 31, 2020. The
increase  in  selling,  general  and  administrative  expense  is  primarily  attributable  to  increased  personnel  and  other  selling,  general  and
administrative  costs  associated  with  execution  of  the  launch  of  UKONIQ  and  planning  for  the  potential  launches  of  U2  in  CLL  and
BRIUMVI in RMS.

Interest  Expense.  Interest  expense  for  the  year  ended  December  31,  2021  was  $5.6  million  compared  to  $6.3  million  for  the
comparable  period  ended  December  31,  2020.  The  $0.7  million  decrease  is  mainly  due  to  an  increase  in  interest  expense  related  to
administrative fees in connection with contract manufacturing costs during the year ended December 31, 2020.

Other Income. Other income increased by $1.9 million to $2.3 million for the year ended December 31, 2021, as compared to $0.5
million for the year ended December 31, 2020. The increase is mainly due to greater interest income and an increase in the change in fair
value of notes payable during the year ended December 31, 2021.

LIQUIDITY AND CAPITAL RESOURCES

Our major sources of cash have been proceeds from private placement and public offering of equity securities, and from our loan
and security agreements executed with Hercules Capital, Inc. (Hercules) (see Note 6 for more information). Since inception, we have incurred
significant  operating  losses.  Substantially  all  our  operating  losses  have  resulted  from  costs  incurred  in  connection  with  our  research  and
development programs and from selling, general and administrative costs associated with our operations, including our commercialization
activities. As of December 31, 2022, we had not yet generated revenue from drug sales of BRIUMVI. BRIUMVI first became commercially
available in the United States in January of 2023. Even with the commercialization of BRIUMVI and the future commercialization of our
other  drug  candidates,  we  may  not  become  profitable.  Our  ability  to  achieve  profitability  depends  on  our  ability  to  generate  revenue  and
many  other  factors,  including  our  ability  to  obtain  regulatory  approval  for  our  drug  candidates;  successfully  complete  any  post-approval
regulatory  obligations;  and  successfully  commercialize  our  drug  candidates  alone  or  in  partnership.  We  may  continue  to  incur  substantial
operating losses even if we begin to generate revenues from our drug candidates.

As of December 31, 2022, we had $174.1 million in cash and cash equivalents, and investment securities. We anticipate that our
cash, cash equivalents, and investment securities as of December 31, 2022, capital contractually available under our existing Amended Loan
Agreement, and forecasted revenue, will provide sufficient liquidity for more than a twelve-month period from the date of filing this Annual
Report on Form 10-K. The actual amount of cash that we will need to operate is subject to many factors, including, but not limited to, our
BRIUMVI commercialization efforts, preparations for the potential commercialization of our other drug candidates, and the timing, design
and conduct of clinical trials for our drug candidates. We are dependent upon significant future financing to provide the cash necessary to
execute our ongoing and future operations, including the commercialization of any of our drug candidates.

Discussion of Cash Flows

The following table summarizes our cash flows for the years ended December 31, 2022 and 2021:

(in thousands)
Net cash used in operating activities
Net cash used in investing activities
Net cash used in financing activities

2022

2021

 (176,170)
 (20,013)
 (391)

$
$
$

 (295,634)
 (332)
 41,419

$
$
$

Cash  used  in  operating  activities  for  the  year  ended  December  31,  2022  was  $176.2  million  as  compared  to  $295.6  million  for
the year ended December 31, 2021. The decrease in cash used in operating activities was due primarily to greater expenditures associated
with our license milestone payments and clinical trial expenses during the year ended December 31, 2021.

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For  the  year  ended  December  31,  2022,  net  cash  used  in  investing  activities  was  $20.0  million  as  compared  to  $0.3  million  for
the year ended December 31, 2021. The increase in net cash used in investing activities was primarily due to greater investment in short-term
securities during the year ended December 31, 2022.

For the year ended December 31, 2022, net cash used in financing activities was $0.4 million as compared to net cash provided by

financing activities of $41.4 million for the year ended December 31, 2021. The decrease in net cash provided by financing activities was
primarily attributable to proceeds from debt financings that took place during the year ended December 31, 2021.

ATM Program

On September 5, 2019, we filed an automatic “shelf registration” statement on Form S-3 (the 2019 WKSI Shelf) as a “well-known
seasoned issuer” as defined in Rule 405 under the Securities Act, which registered an unlimited and indeterminate amount of debt or equity
securities for future issuance and sale. The 2019 WKSI Shelf was declared effective in September 2019. In connection with the 2019 WKSI
Shelf, we entered into an At-the-Market Issuance Sales Agreement (the 2020 ATM) with Jefferies LLC, Cantor Fitzgerald & Co. and B. Riley
Securities, Inc. (each a 2020 Agent and collectively, the 2020 Agents), relating to the sale of shares of our common stock. Under the 2020
ATM,  we  paid  the  2020  Agents  a  commission  rate  of  up  to  3.0%  of  the  gross  proceeds  from  the  sale  of  any  shares  of  common  stock.  In
November 2020, we entered into an At-the-Market Issuance Sales Agreement (the 2021 ATM) with the same terms and agents (each a 2021
Agent and collectively, the 2021 Agents) as the 2020 ATM.

During the year ended December 31, 2020, we sold a total of 8,528,286 shares of common stock under the 2020 ATM for aggregate
total  gross  proceeds  of  approximately  $187.5  million  at  an  average  selling  price  of  $21.99  per  share,  resulting  in  net  proceeds  of
approximately $184.2 million after deducting commissions and other transactions costs.

During the year ended December 31, 2020, we sold a total of 804,100 shares of common stock under the 2021 ATM for aggregate
total gross proceeds of approximately $33.9 million at an average selling price of $42.18 per share, resulting in net proceeds of approximately
$33.3 million after deducting commissions and other transactions costs.

During the year ended December 31, 2021, we sold a total of 72,000 shares of common stock under the 2021 ATM for aggregate
total gross proceeds of approximately $2.5 million at an average selling price of $34.25 per share, resulting in net proceeds of approximately
$2.4 million after deducting commissions and other transactions costs.

On September 2, 2022, we filed an automatic “shelf registration” statement on Form S-3 (the 2022 WKSI Shelf) as a “well-known
seasoned issuer” as defined in Rule 405 under the Securities Act, which registered an unlimited and indeterminate amount of debt or equity
securities for future issuance and sale. The 2022 WKSI Shelf was declared effective in September 2022. In connection with the 2022 WKSI
Shelf, we entered into an At-the-Market Issuance Sales Agreement (the 2022 ATM) with Cantor Fitzgerald & Co. and B. Riley Securities,
Inc. (each a 2022 Agent and collectively, the 2022 Agents), relating to the sale of shares of our common stock. Under the 2022 ATM, we will
pay the 2022 Agents a commission rate of up to 3.0% of the gross proceeds from the sale of any shares of common stock. The 2022 ATM has
replaced the 2021 ATM as the only active ATM program.

We had no activity on the 2021 ATM or 2022 ATM during the year ended December 31, 2022.

The  2022  WKSI  Shelf  is  currently  our  only  active  shelf  registration  statement.  We  may  offer  any  combination  of  the  securities
registered under the 2022 WKSI Shelf from time to time in response to market conditions or other circumstances if we believe such a plan of
financing is in the best interests of our stockholders. We may need to file additional shelf registration statements in the future to provide us
with the flexibility to raise additional capital to finance our operations as needed.

Equity Financings

In May 2020, we completed an underwritten public offering of 8,500,000 shares of our common stock (plus an underwriter option to
purchase up to an additional 1,275,000 shares of common stock, which was exercised) at a price of $18 per share. Net proceeds from this
offering,  including  the  overallotment,  were  approximately  $165.1  million,  net  of  underwriting  discounts  and  offering  expenses  of
approximately $10.8 million.

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On  December  17,  2020,  we  completed  a  public  offering  of  6,320,000  shares  of  our  common  stock  (plus  a  30-day  underwriter
overallotment option to purchase up to an additional 948,000 shares of common stock, which was exercised) at a price of $43.50 per share.
Net proceeds from this offering, including the overallotment, were approximately $297.2 million after underwriting discounts and offering
expenses of approximately $19.0 million.

Debt Financings

On February 28, 2019 (the Closing Date), we entered into a term loan facility of up to $60.0 million (Term Loan) with Hercules
Capital, Inc. (Hercules), the proceeds of which were used for research and development programs and for general corporate purposes. The
Term  Loan  is  governed  by  a  loan  and  security  agreement,  dated  February  28,  2019  (the  Loan  Agreement),  which  provides  for  up  to  four
separate  advances.  The  first  advance  of  $30.0  million  was  drawn  on  the  Closing  Date.  An  additional  $30.0  million  was  available  with
different milestones and time points that have lapsed.

On  December  30,  2021  (the  First  Amendment  Closing  Date),  the  Company  entered  into  an  Amended  and  Restated  Loan  and
Security Agreement (the Amended Loan Agreement) with Hercules Capital, Inc. The Amended Loan Agreement amended the terms of the
Loan  Agreement  to,  among  other  things,  (i)  increase  the  aggregate  principal  amount  of  the  loan,  available  at  the  Company’s  option,  from
$60.0 million to $200.0 million (the Amended Term Loan), (ii) issue a first advance of $70.0 million drawn at the First Amendment Closing
date,  a  portion  of  which  was  used  to  refinance  the  current  outstanding  loan  balance  of  approximately  $7.8  million  and  pay  for  expenses
incurred  by  the  Lender  in  executing  the  agreements,  (iii)  change  the  draw  amounts  and  dates  available  in  Tranche  2  through  Tranche  4
including increasing the amount available under Tranche 2 subject to the achievement of performance milestones from $10.0 million to $20.0
million, increasing the amount available under Tranche 3 subject to the achievement of performance milestones from $10.0 million to $45.0
million, and increasing the amount under Tranche 4 subject to the approval of Hercules’ investment committee from $10.0 million to $65.0
million, (iv) extend the maturity date of the facility from the original March 1, 2022 to January 1, 2026, (v) reset and extend the interest only
period  from  April  1,  2021  to  February  1,  2025  and  extendable  to  August  1,  2025  subject  to  the  achievement  of  certain  performance
milestones, and (vi) modify the cash interest rate to be the greater of either (a) the “prime rate” as reported in The Wall Street Journal plus
2.15%, and (b) 5.40%. The performance milestones are based on achievement of certain U.S. Food and Drug Administration approvals and
impact  the  potential  extension  of  the  interest  only  period,  access  to  future  advances  under  the  Loan  Agreement  and  minimum  cash  levels
required under the Amended Loan Agreement.

The Amended Loan Agreement contains financial covenants from and after October 15, 2022 that require the Company to maintain
certain levels of unrestricted cash and additional financial covenants related to market capitalization and unrestricted cash commencing on
July 1, 2023 at any time when the Amended Term Loan advances made under the Amended Loan Agreement are greater than $70 million.

The Amended Loan Agreement also contains warrant coverage of 2.95% of the total amount funded. A warrant (the Warrant) was
issued  by  the  Company  to  Hercules  to  purchase  115,042  shares  of  common  stock  with  an  exercise  price  of  $17.95  for  the  initial  amount
funded at closing. The Warrant shall be exercisable for seven years from the date of issuance. Hercules may exercise the Warrant either by (a)
cash or check or (b) through a net issuance conversion.

In addition, the Company is required to pay a final payment fee equal to 5.95% of the aggregate principal amount of the Term Loan

Advances.

The Company may, at its option, prepay the Amended Term Loan in full or in part, subject to a prepayment penalty equal to (i) 2.0%
of the principal amount prepaid if the prepayment occurs prior to the first anniversary of the First Amendment Closing Date, (ii) 1.5% of the
principal  amount  prepaid  if  the  prepayment  occurs  on  or  after  the  first  anniversary  and  prior  to  the  second  anniversary  of  the  First
Amendment Closing Date, and (iii) 1.0% of the principal amount prepaid if the prepayment occurs on or after the second anniversary and
prior to the third anniversary of the First Amendment Closing Date.

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Leases

In October 2014, we entered into an agreement (the Office Agreement) with Fortress Biotech, Inc. (FBIO) to occupy approximately
45% of the 24,000 square feet of New York City office space leased by FBIO. The Office Agreement requires us to pay our respective share
of the average annual rent and other costs of the 15-year lease. We approximate an average annual rental obligation of $1.8 million under the
Office Agreement. We began to occupy this new space in April 2016, with rental payments beginning in the third quarter of 2016. Also in
connection with this lease, we have pledged $1.3 million to secure a line of credit as a security deposit for the Office Agreement, which has
been recorded as restricted cash in the accompanying condensed consolidated balance sheets.

Total rental expense was approximately $2.7 million, $2.2 million and 2.7 million for the years ended December 31, 2022, 2021 and

2020, respectively.

Future  minimum  lease  commitments  as  of  December  31,  2022  total,  in  the  aggregate,  approximately  $17.4  million  through
December 31, 2032. Our future minimum lease commitments include our office leases in New York, New Jersey and North Carolina as of
December 31, 2022.

OFF-BALANCE SHEET ARRANGEMENTS

We have not entered into any transactions with unconsolidated entities whereby we have financial guarantees, subordinated retained
interests,  derivative  instruments  or  other  contingent  arrangements  that  expose  us  to  material  continuing  risks,  contingent  liabilities,  or  any
other  obligations  under  a  variable  interest  in  an  unconsolidated  entity  that  provides  us  with  financing,  liquidity,  market  risk  or  credit  risk
support.

CRITICAL ACCOUNTING POLICIES AND SIGNIFICANT JUDGMENTS AND ESTIMATES

The discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements,
which have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of these financial statements
requires  us  to  make  estimates  and  judgments  that  affect  the  reported  amount  of  assets  and  liabilities  and  related  disclosure  of  contingent
assets and liabilities at the date of our financial statements and the reported amounts of revenues and expenses during the applicable period.
Actual results may differ from these estimates under different assumptions or conditions.

We  define  critical  accounting  policies  as  those  that  are  reflective  of  significant  judgments  and  uncertainties  and  which  may
potentially result in materially different results under different assumptions and conditions. In applying these critical accounting policies, our
management uses its judgment to determine the appropriate assumptions to be used in making certain estimates. These estimates are subject
to an inherent degree of uncertainty. Our critical accounting policies include the following:

Revenue Recognition. Pursuant to 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 be entitled in exchange for those goods or services. To achieve this
core principle, Topic 606 includes provisions within a five-step model that includes i) identifying the contract with a customer, ii) identifying
the  performance  obligations  in  the  contract,  iii)  determining  the  transaction  price,  iv)  allocating  the  transaction  price  to  the  performance
obligations, and v) recognizing revenue when, or as, an entity satisfies a performance obligation.

At  contract  inception,  we  assess  the  goods  or  services  promised  within  each  contract  and  assess  whether  each  promised  good  or
service is distinct and determine those that are performance obligations. We then recognize as revenue the amount of the transaction price that
is allocated to the respective performance obligation when the performance obligation is satisfied.

Product Revenue, Net – The Company recognizes product revenues, net of variable consideration related to certain allowances and
accruals, when the customer takes control of the product, which is typically upon delivery to the customer. Product revenue is recorded at the
net sales price, or transaction price. The Company records product revenue reserves, which are classified as a reduction in product revenues,
to  account  for  the  components  of  variable  consideration.  Variable  consideration  includes  the  following  components,  which  are  described
below: chargebacks, government rebates, trade discounts and allowances, product returns, and co-payment assistance.

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These reserves are based on estimates of the amounts earned or to be claimed on the related sales and are classified as reductions of
accounts receivable (if the amount is expected to be settled with a credit against the Company's customer account) or a liability (if the amount
is  expected  to  be  settled  with  a  cash  payment).  The  Company's  estimates  of  reserves  established  for  variable  consideration  are  calculated
based upon a consistent application of the expected value method, which is the sum of probability-weighted amounts in a range of possible
consideration amounts. These estimates reflect the Company's current contractual and statutory requirements, specific known market events
and trends, industry data, and forecasted customer buying and payment patterns. The amount of variable consideration that is included in the
transaction price may be subject to constraint and is included in net product revenues only to the extent that it is probable that a significant
reversal in the amount of the cumulative revenue recognized will not occur in a future period. Actual amounts of consideration received may
ultimately differ from the Company's estimates. If actual results vary, the Company adjusts these estimates, which could have an effect on
earnings  in  the  period  of  adjustment.  For  a  complete  discussion  of  the  accounting  for  product  revenue,  see  Note  1  –  Organization  and
Summary of Significant Accounting Policies in the Notes to Consolidated Financial Statements.

Stock Compensation. We have granted stock options and restricted stock to employees, directors and consultants, as well as warrants
to other third parties. For employee, director and consultant grants the value of each option award is estimated on the date of grant using the
Black-Scholes option-pricing model. The Black-Scholes model takes into account volatility in the price of our stock, the risk-free interest
rate, the estimated life of the option, the closing market price of our stock and the exercise price. We base our estimates of our stock price
volatility  on  the  historical  volatility  of  our  common  stock  and  our  assessment  of  future  volatility;  however,  these  estimates  are  neither
predictive nor indicative of the future performance of our stock. For purposes of the calculation, we assumed that no dividends would be paid
during  the  life  of  the  options  and  warrants.  The  estimates  utilized  in  the  Black-Scholes  calculation  involve  inherent  uncertainties  and  the
application of management judgment. In addition, because some of the options, restricted stock and warrants issued to employees, consultants
and other third parties vest upon the achievement of certain milestones, the total expense is uncertain. Compensation expense for such awards
that vest upon the achievement of milestones is recognized when the achievement of such milestones occurs.

Accrued  Research  and  Development  Expenses.  As  part  of  the  process  of  preparing  our  financial  statements,  we  are  required  to
estimate our accrued expenses. This process involves reviewing open contracts, communicating with our personnel to identify services that
have been performed on our behalf and estimating the level of service performed and the associated cost incurred for the service when we
have not yet been invoiced or otherwise notified of the actual cost. The majority of our service providers invoice us monthly for services
performed or when contractual milestones are met. We make estimates of our accrued expenses as of each balance sheet date in our financial
statements based on facts and circumstances known to us at that time. We periodically confirm the accuracy of our estimates with the service
providers and make adjustments, if necessary. Examples of estimated accrued research and development expenses include:

● fees paid to contract research organizations (CROs) in connection with clinical studies;
● fees paid to contract manufacturing organizations (CMOs);
● fees paid to trial sites in connection with clinical studies; and
● fees paid to vendors associated with licenses/milestones.

We base our expenses related to clinical studies on our estimates of the services received and efforts expended pursuant to contracts
with multiple CROs that conduct and manage clinical studies on our behalf. The financial terms of these agreements are subject to an initial
negotiation, vary from contract to contract and may result in uneven payment flows. There may be instances in which payments made to our
vendors will exceed the level of services provided and result in a prepayment of the clinical expense. Payments under some of these contracts
depend  on  factors  such  as  the  successful  enrollment  of  patients  and  the  completion  of  clinical  trial  milestones.  In  accruing  certain  service
fees, we estimate the time period over which services will be performed, enrollment of patients, number of sites activated and the level of
effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies from our estimate, we
adjust the accrual or prepaid accordingly. Although we do not expect our estimates to be materially different from amounts actually incurred,
our understanding of the status and timing of services performed relative to the actual status and timing of services performed may vary and
may result in us reporting amounts that are too high or too low in any particular period.

RECENTLY ISSUED ACCOUNTING STANDARDS

Management  does  not  believe  that  any  recently  issued,  but  not  yet  effective,  accounting  pronouncements,  if  currently  adopted,

would have an effect on the Company’s financial statements.

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ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK.

The  primary  objective  of  our  investment  activities  is  to  preserve  principal  while  maximizing  our  income  from  investments  and
minimizing  our  market  risk.  We  currently  invest  in  government  and  investment-grade  corporate  debt  in  accordance  with  our  investment
policy, which we may change from time to time. The securities in which we invest have market risk. This means that a change in prevailing
interest rates, and/or credit risk, may cause the fair value of the investment to fluctuate. For example, if we hold a security that was issued
with a fixed interest rate at the then-prevailing rate and the prevailing interest rate later rises, the fair value of our investment will probably
decline.  As  of  December  31,  2022,  our  portfolio  of  financial  instruments  consists  of  cash  equivalents  and  short-term  interest-bearing
securities, including government debt and money market funds. The average duration of all of our held-to-maturity investments held as of
December 31, 2022, was less than 24 months. Due to the relatively short-term nature of these financial instruments, we believe there is no
material exposure to interest rate risk, and/or credit risk, arising from our portfolio of financial instruments.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

Our consolidated financial statements and the notes thereto, included in Part IV, Item 14(a), part 1, are incorporated by reference into

this Item 8.

ITEM  9.  CHANGES  IN  AND  DISAGREEMENTS  WITH  ACCOUNTANTS  ON  ACCOUNTING  AND  FINANCIAL
DISCLOSURES.

Not applicable.

ITEM 9A. CONTROLS AND PROCEDURES.

Evaluation  of  Disclosure  Controls  and  Procedures.  As  of  December  31,  2022,  management  carried  out  an  evaluation,  under  the
supervision and with the participation of our Chief Executive Officer and our Chief Financial Officer, of the effectiveness of the design and
operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as
amended (the Exchange Act)). Our disclosure controls and procedures are designed to provide reasonable assurance that information we are
required to disclose in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the
time periods specified in applicable rules and forms. Based upon that evaluation, our Chief Executive and Chief Financial Officers concluded
that, as of December 31, 2022, our disclosure controls and procedures were effective.

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 Rule 13a-15(f) or Rule 15d-15(f) under the Exchange Act). Our
management assessed the effectiveness of our internal control over financial reporting as of December 31, 2022. In making this assessment,
our  management  used  the  criteria  established  in  Internal  Control  –  Integrated  Framework  (2013)  issued  by  the  Committee  of  Sponsoring
Organizations  of  the  Treadway  Commission,  or  COSO  Framework.  Our  management  has  concluded  that,  as  of  December  31,  2022,  our
internal control over financial reporting was effective based on these criteria.

The  effectiveness  of  our  internal  control  over  financial  reporting  as  of  December  31,  2022  was  audited  by  KPMG  LLP,  our

independent registered public accounting firm, as stated in their report.

Changes  in  Internal  Control  Over  Financial  Reporting.  There  were  no  changes  in  our  internal  control  over  financial  reporting
during the quarter ended December 31, 2022 that have materially affected, or are reasonably likely to materially affect, our internal control
over financial reporting.

Limitations on the Effectiveness of Controls. Our management, including our Chief Executive Officer and Chief Financial Officer,
does not expect that our disclosure controls and procedures or our internal control over financial reporting will prevent all errors and all fraud.
A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the
control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of
controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can
provide absolute assurance that all control issues and instances of fraud, if any, within our Company have been detected.

ITEM 9B. OTHER INFORMATION.

None.

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PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE.

The information required by this Item is incorporated herein by reference from our Proxy Statement for our 2023 Annual Meeting of

Stockholders.

ITEM 11. EXECUTIVE COMPENSATION.

The information required by this Item is incorporated herein by reference from our Proxy Statement for our 2023 Annual Meeting of

Stockholders.

ITEM  12.  SECURITY  OWNERSHIP  OF  CERTAIN  BENEFICIAL  OWNERS  AND  MANAGEMENT  AND  RELATED
STOCKHOLDER MATTERS.

The information required by this Item is incorporated herein by reference from our Proxy Statement for our 2023 Annual Meeting of

Stockholders.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE.

The information required by this Item is incorporated herein by reference from our Proxy Statement for our 2023 Annual Meeting of

Stockholders.

ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES.

The information required by this Item is incorporated herein by reference from our Proxy Statement for our 2023 Annual Meeting of

Stockholders.

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PART IV

ITEM 15. EXHIBITS and FINANCIAL STATEMENT SCHEDULES.

1. Consolidated Financial Statements

The following consolidated financial statements of TG Therapeutics, Inc. are filed as part of this report.

Contents
Report  of  Independent  Registered  Public  Accounting  Firm  (KPMG  LLP,  New  York,  NY,  Audit  Firm  ID:  185)
(CohnReznick LLP, New York, NY, Audit Firm ID: 596)

Consolidated Balance Sheets as of December 31, 2022 and 2021

Consolidated Statements of Operations for the years ended December 31, 2022, 2021 and 2020

Consolidated Statements of Stockholders’ Equity for the years ended December 31, 2022, 2021 and 2020

Consolidated Statements of Cash Flows for the years ended December 31, 2022, 2021 and 2020

Notes to Consolidated Financial Statements

2.      Consolidated Financial Statement Schedules

Page

F-1

F-5

F-6

F-7

F-8

F-9

All schedules are omitted as the information required is inapplicable or the information is presented in the consolidated financial

statements or the related notes.

3.     Exhibits

Exhibit
Number

Exhibit Description

3.1

3.2

3.3

3.4

4.1

4.2

4.3

Amended and Restated Certificate of Incorporation of TG Therapeutics, Inc. dated April 26, 2012 (incorporated by reference to
Exhibit 3.1 to the Registrant’s Form 10-Q for the quarter ended June 30, 2012).

Certificate of Amendment to Amended and Restated Certificate of Incorporation of TG Therapeutics, Inc. dated June 9, 2014
(incorporated by reference to Exhibit 3.2 to the Registrant’s Form 10-Q for the quarter ended June 30, 2014).

Certificate of Amendment to Amended and Restated Certificate of Incorporation of TG Therapeutics, Inc. dated June 16, 2021
(incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K filed on June 21, 2021).

Amended and Restated Bylaws of TG Therapeutics, Inc. dated July 18, 2014 (incorporated by reference to Exhibit 3.1 to the
Registrant’s Current Report on Form 8-K filed on July 21, 2014).

Specimen common stock certificate (incorporated by reference to Exhibit 4.1 to the Registrant’s Form 10-K for the year ended
December 31, 2011).

Stockholder Protection Rights Agreement, dated July 18, 2014 between TG Therapeutics, Inc. and American Stock Transfer &
Trust Company, LLC, as Rights Agent (incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-
K filed on July 21, 2014).

Description of Securities of TG Therapeutics, Inc. (incorporated by reference to Exhibit 4.5 of the Registrant’s Annual Report
on Form 10-K for the fiscal year ended December 31, 2020).

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10.1

10.2

10.3

10.4

10.5

10.6

10.7

10.8

10.9

10.10

10.11

10.12

10.13

10.14

10.15

10.16

10.17

Employment Agreement, effective December 29, 2011, between the Registrant and Michael Weiss (incorporated by reference
to Exhibit 10.30 to the Registrant’s Form 10-K for the fiscal year ended December 31, 2011). †

Restricted  Stock  Subscription  Agreement,  effective  December  29,  2011,  between  the  Registrant  and  Michael  Weiss
(incorporated by reference to Exhibit 10.31 to the Registrant’s Form 10-K for the fiscal year ended December 31, 2011). †

Amendment to Restricted Stock Agreement, dated July 12, 2013, by and between TG Therapeutics, Inc. and Michael S. Weiss
(incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed on July 16, 2013). †

Amendment to Restricted Stock Agreements, dated December 31, 2014, by and between TG Therapeutics, Inc. and Michael S.
Weiss (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed on January 7, 2015). †

Employment Agreement, effective December 29, 2011, between the Registrant and Sean Power (incorporated by reference to
Exhibit 10.32 to the Registrant’s Form 10-K for the fiscal year ended December 31, 2011). †

Restricted Stock Subscription Agreement, effective December 29, 2011 between the Registrant and Sean Power (incorporated
by reference to Exhibit 10.33 to the Registrant’s Form 10-K for the fiscal year ended December 31, 2011). †

Amendment to Restricted Stock Agreement, dated July 12, 2013, by and between TG Therapeutics, Inc. and Sean A. Power
(incorporated by reference to Exhibit 10.2 to the Registrant’s Current Report on Form 8-K filed on July 16, 2013). †

Amendment to Restricted Stock Agreements, dated December 31, 2014, by and between TG Therapeutics, Inc. and Sean A.
Power (incorporated by reference to Exhibit 10.2 to the Registrant’s Current Report on Form 8-K filed on January 7, 2015). †

License  Agreement  dated  January  30,  2012,  by  and  among  the  Registrant,  GTC  Biotherapeutics,  Inc.,  LFB  Biotechnologies
S.A.S. and LFB/GTC LLC (incorporated by reference to Exhibit 10.35 to the Registrant’s Form 10-K for the fiscal year ended
December 31, 2011). *

Sublicense  Agreement  between  TG  Therapeutics,  Inc.  and  Ildong  Pharmaceutical  Co.  Ltd.,  dated  November  13,  2012
(incorporated by reference to Exhibit 10.37 to the Registrant’s Form 10-K for the fiscal year ended December 31, 2012). *

License  Agreement  between  TG  Therapeutics,  Inc.  and  Ligand  Pharmaceuticals  Incorporated,  dated  June  23,  2014
(incorporated by reference to Exhibit 10.1 to the Registrant’s Form 10-Q for the quarter ended June 30, 2014).*

License Agreement between TG Therapeutics, Inc. and Rhizen Pharmaceuticals SA, dated September 22, 2014 (incorporated
by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed on January 20, 2015). *

Collaboration Agreement between TG Therapeutics, Inc. and Checkpoint Therapeutics, Inc., dated March 3, 2015 (incorporated
by reference to Exhibit 10.1 to the Registrant’s Form 10-Q for the quarter ended March 31, 2015). *

Sublicense Agreement between TG Therapeutics, Inc. and Checkpoint Therapeutics, Inc., dated May 27, 2016, (incorporated
by reference to Exhibit 10.1 to the Registrant’s Form 10-Q for the quarter ended June 30, 2016). *

Amendment  to  Employment  Agreement,  effective  January  1,  2017,  between  TG  Therapeutics,  Inc.  and  Michael  S.  Weiss
(incorporated by reference to Exhibit 10.18 to the Registrant’s Form 10-K/A for the year ended December 31, 2016). †

License Agreement between TG Therapeutics, Inc. and Jiangsu Hengrui Medicine Co., dated January 8, 2018 (incorporated by
reference to Exhibit 10.20 to the Registrant’s Form 10-K for the year ended December 31, 2017). *

Joint Venture and License Option Agreement by and between TG Therapeutics, Inc. and Novimmune S.A., dated June 18, 2018
(incorporated by reference to Exhibit 10.20 to the Registrant’s Form 10-Q for the quarter ended June 30, 2018). *

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10.18

10.19

10.20

10.21

10.22

10.23

10.24

10.25

10.26

10.27

10.28

21.1

23.1

23.2

24.1

31.1

31.2

32.1

32.2

Master  Services  Agreement  between  Samsung  Biologics  Co.,  Ltd.  And  TG  Therapeutics,  Inc.,  effective  February  21,  2018
(incorporated by reference to the Exhibit 10.2 to the Registrant’s Form 10-Q for the quarter ended June 30, 2019). *

Loan and Security Agreement, dated February 28, 2019, by and among TG Therapeutics, Inc., TG Biologics, Inc. and Hercules
Capital, Inc. (incorporated by reference to the Exhibit 10.2 to the Registrant’s Current Report on Form 8-K filed on March 5,
2019).

Warrant Agreement, dated February 28, 2019, by and between TG Therapeutics, Inc. and Hercules Capital, Inc. (incorporated
by reference to the Exhibit 10.3 to the Registrant’s Current Report on Form 8-K filed on March 5, 2019).

Warrant  Agreement,  dated  February  28,  2019,  by  and  between  TG  Therapeutics,  Inc.  and  Hercules  Technology  III,  L.P.
(incorporated by reference to the Exhibit 10.4 to the Registrant’s Current Report on Form 8-K filed on March 5, 2019).

Amended  and  Restated  Collaboration  Agreement  by  and  between  TG  Therapeutics,  Inc.  and  Checkpoint  Therapeutics,  Inc.,
dated June 19, 2019 (incorporated by reference to Exhibit 10.1 to the Registrant’s Form 10-Q for the quarter ended June 30,
2019). *

Amended and Restated Employment Agreement by and between TG Therapeutics, Inc. and Michael S. Weiss, dated June 18,
2021 (incorporated by reference to Exhibit 10.1 to the Registrant’s Form 10 Q for the quarter ended June 30, 2021). †

Amended  and  Restated  Loan  and  Security  Agreement,  dated  December  30,  2021,  by  and  among  TG  Therapeutics,  Inc.,  TG
Biologics, Inc. and Hercules Capital, Inc. (incorporated by reference to Exhibit 10.28 to the Registrant’s Form 10-K for the year
ended December 31, 2021).

Warrant Agreement, dated December 30, 2021, by and between TG Therapeutics, Inc. and Hercules Capital Inc. (incorporated
by reference to Exhibit 10.29 to the Registrant’s Form 10-K for the year ended December 31, 2021).

Warrant Agreement, dated December 30, 2021, by and between TG Therapeutics, Inc. and Hercules Private Credit Fund I L.P.
(incorporated by reference to Exhibit 10.30 to the Registrant’s Form 10-K for the year ended December 31, 2021).

Warrant  Agreement,  dated  December  30,  2021,  by  and  between  TG  Therapeutics,  Inc.  and  Hercules  Private  Global  Venture
Growth Fund I L.P. (incorporated by reference to Exhibit 10.31 to the Registrant’s Form 10-K for the year ended December 31,
2021).

TG  Therapeutics,  Inc.  2022  Incentive  Plan  (incorporated  by  reference  to  Exhibit  10.1  to  the  Registrant’s  Current  Report  on
Form 8-K filed on June 23, 2022). †

Subsidiaries of TG Therapeutics, Inc. #

Consent of Independent Registered Public Accounting Firm (KPMG, LLP). #

Consent of Independent Registered Public Accounting Firm (CohnReznick LLP). #

Power of Attorney (included in signature page).

Certification of Principal Executive Officer. #

Certification of Principal Financial Officer. #

Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. #

Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. #

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101

The following financial information from TG Therapeutics, Inc.’s Annual Report on Form 10-K for the year ended December
31,  2022,  formatted  in  iXBRL  (Inline  eXtensible  Business  Reporting  Language):  (i)  Consolidated  Balance  Sheets,  (ii)
Consolidated Statements of Operations, (iii) Consolidated Statements of Stockholders’ Equity, (iv) Consolidated Statements of
Cash Flows, (v) the Notes to Consolidated Financial Statements.

104

Cover Page Interactive Data File (embedded within the Inline XBRL document).

Filed Herewith.
Indicates management contract or compensatory plan or arrangement.

#
†
* Certain portions of this exhibit have been omitted pursuant to Item 601(b)(10) of Regulation S-K.

TG Therapeutics, Inc.

Consolidated Financial Statements

Report of Independent Registered Public Accounting Firm (KPMG LLP, New York, NY, Audit Firm ID: 185) (CohnReznick
LLP, New York, NY, Audit Firm ID: 596)

Consolidated Balance Sheets as of December 31, 2022 and 2021

Consolidated Statements of Operations for the years ended December 31, 2022, 2021 and 2020

Consolidated Statements of Stockholders’ Equity for the years ended December 31, 2022, 2021 and 2020

Consolidated Statements of Cash Flows for the years ended December 31, 2022, 2021 and 2020

Notes to Consolidated Financial Statements

Page

F-1

F-5

F-6

F-7

F-8

F-9

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Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors
TG Therapeutics, Inc.:

Opinion on the Consolidated Financial Statements

We  have  audited  the  accompanying  consolidated  balance  sheets  of  TG  Therapeutics,  Inc.  and  subsidiaries  (the  Company)  as  of
December 31, 2022 and 2021, the related consolidated statements of operations, stockholders’ equity, and cash flows for each of the years in
the two-year period ended December 31, 2022, and the related notes (collectively, the consolidated financial statements). In our opinion, the
consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2022 and
2021, and the results of its operations and its cash flows for each of the years in the two-year period ended December 31, 2022, in conformity
with U.S. generally accepted accounting principles.

We  also  have  audited,  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board  (United  States)
(PCAOB), the Company’s internal control over financial reporting as of December 31, 2022, based on criteria established in Internal Control
– Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission, and our report dated
March 1, 2023 expressed an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting.

Basis for Opinion

These  consolidated  financial  statements  are  the  responsibility  of  the  Company’s  management.  Our  responsibility  is  to  express  an
opinion on these consolidated financial statements based on our audits. We are a public accounting firm registered with the 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
audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to
error  or  fraud.  Our  audits  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. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The  critical  audit  matter  communicated  below  is  a  matter  arising  from  the  current  period  audit  of  the  consolidated  financial
statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that
are  material  to  the  consolidated  financial  statements  and  (2)  involved  our  especially  challenging,  subjective,  or  complex  judgments.  The
communication of a critical audit matter 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 matter below, providing a separate opinion on the critical audit matter or on the accounts or
disclosures to which it relates.

F-1

 
Table of Contents

Liquidity and capital resources

As discussed in Note 1 to the consolidated financial statements, the Company's sources of cash have primarily been proceeds from
private placement and public offering of equity securities, and from its loan and security agreements. The Company has incurred operating
losses since inception. The Company’s ability to achieve profitability depends on its ability to generate revenue and many other internal and
external factors. The Company may continue to incur substantial operating losses even if the Company begins to generate revenue from its
drug  candidates.  The  Company  believes  that  its  cash  and  cash  equivalents,  investment  securities,  capital  contractually  available  under  its
existing Amended Loan Agreement, and forecasted revenue will provide the Company with sufficient liquidity for more than a twelve-month
period from the date the consolidated financial statements are issued. As of December 31, 2022, the Company had $174.1 million in cash and
cash equivalents, and investment securities, and $45.0 million of capital available under its Amended Loan Agreement.

We identified the evaluation of the Company’s assessment of its liquidity and capital resources and related disclosures as a critical
audit  matter.  Significant  auditor  judgment  was  required  to  evaluate  the  forecasted  revenue  used  in  the  Company’s  forecasted  cash  flows
analysis for the twelve-month period subsequent to issuance of the consolidated financial statements.

The following are the primary procedures we performed to address this critical audit matter. We evaluated the design and tested the
operating effectiveness of certain internal controls related to the Company’s assessment of its ability to continue as a going concern, including
the development of the forecasted revenue over the twelve-month period following the date the consolidated financial statements are issued.
To assess the Company’s ability to forecast revenue, we compared the Company's forecasted revenue with available external industry data
and other internal information. We performed sensitivity analyses over the Company’s going concern assessment by evaluating the effect of
changes to the forecasted revenue. We evaluated the reasonableness of the Company’s forecasted revenue by comparing it to management’s
stated plans which were corroborated by meeting minutes of the Board of Directors. We assessed the Company’s disclosures related to its
going concern assessment by comparing the disclosures to the audit evidence obtained.

/s/ KPMG LLP

We have served as the Company’s auditor since 2021.

New York, New York
March 1, 2023

F-2

 
Table of Contents

Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors
TG Therapeutics, Inc.:

Opinion on Internal Control Over Financial Reporting

We have audited TG Therapeutics, Inc. and subsidiaries' (the Company) internal control over financial reporting as of December 31, 2022, based
on  criteria  established  in  Internal  Control  –  Integrated  Framework  (2013)  issued  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway
Commission. In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2022,
based  on  criteria  established  in  Internal  Control  –  Integrated  Framework  (2013)  issued  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway
Commission.

We  also  have  audited,  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board  (United  States)  (PCAOB),  the
consolidated balance sheets of the Company as of December 31, 2022 and 2021, the related consolidated statements of operations, stockholders’ equity, and
cash flows for each of the years in the two-year period ended December 31, 2022, and the related notes (collectively, the consolidated financial statements),
and our report dated March 1, 2023 expressed an unqualified opinion on those consolidated financial statements.

Basis for Opinion

The  Company’s  management  is  responsible  for  maintaining  effective  internal  control  over  financial  reporting  and  for  its  assessment  of  the
effectiveness  of  internal  control  over  financial  reporting,  included  in  the  accompanying  Management’s  Annual  Report  on  Internal  Control  over  Financial
Reporting.  Our  responsibility  is  to  express  an  opinion  on  the  Company’s  internal  control  over  financial  reporting  based  on  our  audit.  We  are  a  public
accounting firm registered with the 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  audit  in  accordance  with  the  standards  of  the  PCAOB.  Those  standards  require  that  we  plan  and  perform  the  audit  to  obtain
reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. 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 audit also included performing such other
procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

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 (1) pertain to the maintenance of records that, in reasonable detail, accurately and
fairly reflect the transactions and dispositions of the assets of the company; (2) 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 (3) 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.

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.

/s/ KPMG LLP

New York, New York
March 1, 2023

F-3

 
Table of Contents

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders
TG Therapeutics, Inc.

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated statements of operations, stockholders’ equity and cash flows of TG Therapeutics,
Inc. (the “Company”) for the period ended December 31, 2020, and the related notes (collectively referred to as the consolidated financial
statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the results of its operations and its
cash  flows  for  the  period  ended  December  31,  2020,  in  conformity  with  accounting  principles  generally  accepted  in  the  United  States  of
America.

Basis for Opinion

These  consolidated  financial  statements  are  the  responsibility  of  the  Company’s  management.  Our  responsibility  is  to  express  an
opinion on the Company’s consolidated financial statements based on our audit. 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 audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit
to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or
fraud. Our audit 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 audit 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.
We believe that our audit provides a reasonable basis for our opinion.

Critical Audit Matter

Critical  audit  matters  are  matters  arising  from  the  current  period  audit  of  the  financial  statements  that  were  communicated  or
required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the financial statements
and (2) involved our especially challenging, subjective, or complex judgments. We determined that there are no critical audit matters.

/s/ CohnReznick LLP

We served as the Company’s auditor from 2003 to 2020.

New York, New York

March 1, 2021

F-4

 
Table of Contents

TG Therapeutics, Inc. and Subsidiaries
Consolidated Balance Sheets as of December 31
(in thousands, except share and per share amounts)

Assets
Current assets:

Cash and cash equivalents
Short-term investment securities
Accounts receivable, net
Prepaid research and development
Other current assets

Total current assets

Restricted cash
Long-term investment securities
Right of use assets
Leasehold interest, net
Equipment, net
Goodwill

Total assets

Liabilities and stockholders’ equity
Current liabilities:

Accounts payable and accrued expenses
Other current liabilities
Loan payable – current portion
Lease liability – current portion
Accrued compensation

Total current liabilities
Deferred revenue, net of current portion
Loan payable – non-current
Lease liability – non-current
Total liabilities

Commitments and contingencies
Stockholders’ equity:

Common stock, $0.001 par value per share (175,000,000 shares authorized, 146,426,697 and
143,292,043 shares issued, 146,385,388 and 143,250,734 shares outstanding at December 31,
2022 and December 31, 2021, respectively)
Additional paid-in capital
Treasury stock, at cost, 41,309 shares at December 31, 2022 and December 31, 2021
Accumulated deficit

Total stockholders’ equity
Total liabilities and stockholders’ equity

December 31, 
2022

December 31, 
2021

$

$

$

$

102,304
59,374

$

—  

4,237
2,359
168,274
1,273
12,404
8,888
1,627
307
799
193,572

42,019
1,169
—
1,581
8,432
53,201
305
71,135
10,344
134,985

146
1,585,708
(234)
(1,527,033)
58,587
193,572

$

$

$

298,887
15,876
1,389
11,929
2,884
330,965
1,264
35,533
8,629
1,839
600
799
379,629

51,294
1,512
975
1,437
10,166
65,384
457
66,788
9,847
142,476

143
1,565,942
(234)
(1,328,698)
237,153
379,629

The accompanying notes are an integral part of the consolidated financial statements.

F-5

    
    
 
   
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
  
 
  
 
  
 
  
 
 
 
 
 
 
 
 
 
  
 
  
 
  
 
  
 
 
 
 
 
 
 
 
 
 
Table of Contents

TG Therapeutics, Inc. and Subsidiaries
Consolidated Statements of Operations for the Years Ended December 31
(in thousands, except share and per share amounts)

Revenue:

Product revenue, net
License revenue

Total revenue

Costs and expenses:

Cost of product revenue
Research and development:
Noncash compensation
Other research and development

Total research and development

Selling, general and administrative:

Noncash compensation
Other selling, general and administrative

Total selling, general and administrative

Total costs and expenses

Operating loss

Other expense (income):

Interest expense
Other income

Total other expense (income), net

Net loss

Basic and diluted net loss per common share

2022

2021

2020

$

2,633
152
2,785

$

6,537
152
6,689

$

265

790

13,224
112,128
125,352

5,961
64,046
70,007

24,047
198,532
222,579

37,227
90,863
128,090

—
152
152

—

13,962
151,934
165,896

66,327
41,523
107,850

195,624

351,459

273,746

(192,839)

(344,770)

(273,594)

10,191
(4,695)
5,496

5,638
(2,307)
3,331

6,329
(542)
5,787

$

$

(198,335)

(1.46)

$

$

(348,101)

(2.63)

$

$

(279,381)

(2.42)

Weighted-average shares used in computing basic and diluted net loss per
common share

135,411,258

  132,222,753

  115,333,693

The accompanying notes are an integral part of the consolidated financial statements.

F-6

    
    
    
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
  
 
  
 
  
 
 
 
 
  
 
  
 
  
 
  
 
  
 
  
 
 
 
 
 
 
 
 
 
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
Table of Contents

TG Therapeutics, Inc. and Subsidiaries
Consolidated Statements of Stockholders’ Equity for the Years Ended December 31
(in thousands, except share amounts)

Balance at January 1, 2020
Issuance of common stock in connection with exercise of options
Issuance of restricted stock
Forfeiture of restricted stock
Issuance of common stock in offerings (net of offering costs of $29.9 million)
Issuance of common stock in At-the-Market offerings (net of offering costs of
$4.0 million)
Compensation in respect of restricted stock granted to employees, directors and
consultants
Net loss
Balance at December 31, 2020
Issuance of common stock in connection with exercise of options
Issuance of restricted stock
Warrants issued with debt financing
Forfeiture of restricted stock
Offering Costs Paid
Issuance of common stock in At-the-Market offerings (net of offering costs of
$0.1 million)
Compensation in respect of restricted stock granted to employees, directors and
consultants
Net loss
Balance at December 31, 2021
Issuance of common stock in connection with exercise of options
Issuance of restricted stock
Forfeiture of restricted stock
Compensation in respect of restricted stock granted to employees, directors and
consultants
Net loss
Balance at December 31, 2022

* Amount less than one thousand dollars.

Common Stock

$

Shares
109,425,243
35,814
4,909,829
(128,666)
17,043,000

9,332,386

—
—  

140,617,606
52,694
2,738,974
—
(189,231)
—

     Additional

paid-in
 capital

$

739,956
146
(5)
*
462,212

217,442

Amount

109
*
5
*
17

10

—
—  
141
*
2
—
*
—

80,289
—
1,500,040
216
(2)
2,195
—
(204)

72,000

*

2,423

—  
—  

143,292,043
142,409
5,179,201
(2,186,956)

—  
—  
143
*
5
(2)

61,274
—
1,565,942
584
(5)
2

—
—
146,426,697

$

—
—
146

19,185
—
$ 1,585,708

Treasury Stock  

Shares

Amount 

41,309

$

(234)

Accumulated
Deficit
(701,216)

$

$

Total

38,615
146
—
—
462,229

—  
—  
—  

—  

217,452

—
(279,381)
(980,597)
—
—  
—
—
—

80,289
(279,381)
519,350
216
—
2,195
—
(204)

—  

2,423

—  

(348,101)
(1,328,698)
—
—
—

—
(198,335)
$ (1,527,033)

$

61,274
(348,101)
237,153
584
—
—

19,185
(198,335)
58,587

—  
—  
—  

—  

—
—  

(234)
—
—  
—
—
—

—  

—  
—  

(234)
—
—
—

—
—
(234)

—  
—  
—  

—  

—
—  

41,309
—
—  
—
—
—

—  

—  
—  

41,309
—
—
—

—
—
41,309

$

The accompanying notes are an integral part of the consolidated financial statements.

F-7

    
    
    
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

TG Therapeutics, Inc. and Subsidiaries
Consolidated Statements of Cash Flows for the Years Ended December 31
(in thousands)

CASH FLOWS FROM OPERATING ACTIVITIES

Net loss
Adjustments to reconcile net loss to net cash used in operating activities:
Noncash stock compensation expense
Depreciation and amortization
Amortization of premium (discount) on investment securities
Amortization of debt issuance costs
Amortization of leasehold interest
Noncash change in lease liability and right of use asset
Change in fair value of notes payable
Changes in assets and liabilities:

Decrease (increase) in other current assets
Decrease (increase) in accounts receivable
(Decrease) increase in accounts payable and accrued expenses
Decrease in lease liabilities
Increase (decrease) in other current liabilities
Decrease in deferred revenue
Net cash used in operating activities

CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from maturity of short-term securities
Investment in held-to-maturity securities
Purchases of PPE
Net cash used in investing activities

CASH FLOWS FROM FINANCING ACTIVITIES
Payment of loan payable
Proceeds from sale of common stock, net
Proceeds from exercise of options
Proceeds from debt financings
Offering costs paid
Net cash (used in) provided by financing activities

NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH

(196,574)

(254,547)

CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD

CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD

Reconciliation to amounts on condensed consolidated balance sheets:

Cash and cash equivalents
Restricted cash
Total cash, cash equivalents and restricted cash 

Cash paid for:

Interest

300,151

103,577

102,304
1,273
103,577

5,445

$

$

$

$

554,698

300,151

298,887
1,264
300,151

3,466

$

$

$

$

$

$

$

$

The accompanying notes are an integral part of the consolidated financial statements.

F-8

2022

2021

2020

$

(198,335)

$

(348,101)

$

(279,381)

19,185
303
(331)
1,844
212
2,715
(116)

8,181
1,389
(11,010)
(2,332)
2,277
(152)
(176,170)

87,275
(107,274)
(14)
(20,013)

(975)
—
584
—
—  

(391)

61,274
282
517
1,080
212
1,896
(578)

(8,508)
(1,389)
15,991
(2,012)
(16,146)
(152)
(295,634)

55,600
(55,531)
(401)
(332)

(30,000)
2,219
216
70,000
(1,016)
41,419

80,289
158
(30)
925
216
2,325
748

2,257
—
11,631
(1,988)
(31,505)
(152)
(214,507)

43,250
(67,403)
(357)
(24,510)

—
679,680
147
—
—
679,827

440,810

113,888

554,698

553,439
1,259
554,698

4,501

    
    
    
 
   
   
  
 
   
   
  
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
  
 
  
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
  
 
  
 
  
 
  
 
 
 
 
 
 
  
 
  
 
  
 
 
 
 
  
 
  
 
  
 
 
 
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
 
 
 
  
 
  
 
  
 
  
 
  
 
  
Table of Contents

TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Unless the context requires otherwise, references in this report to “TG,” “Company,” “we,” “us” and “our” refer to TG Therapeutics, Inc.
and our subsidiaries.

NOTE 1 – ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

DESCRIPTION OF BUSINESS

TG Therapeutics is a fully-integrated, commercial stage, biopharmaceutical company focused on the acquisition, development and
commercialization of novel treatments for B-cell diseases. In addition to a research pipeline including several investigational medicines, TG
has  received  approval  from  the  U.S.  Food  and  Drug  Administration  (FDA)  for  BRIUMVI™  (ublituximab-xiiy)  for  the  treatment  of  adult
patients  with  relapsing  forms  of  multiple  sclerosis  (RMS),  to  include  clinically  isolated  syndrome,  relapsing-remitting  disease,  and  active
secondary  progressive  disease,  in  adults.  We  also  actively  evaluate  complementary  products,  technologies  and  companies  for  in-licensing,
partnership, acquisition and/or investment opportunities.

LIQUIDITY AND CAPITAL RESOURCES

We have incurred operating losses since our inception, and expect to continue to incur operating losses for the foreseeable future and

may never become profitable. As of December 31, 2022, we have an accumulated deficit of $1.5 billion.

Our major sources of cash have been proceeds from private placement and public offering of equity securities, and from our loan and
security agreements executed with Hercules Capital, Inc. (Hercules) (see Note 6 for more information). Since inception, we have incurred
significant  operating  losses.  Substantially  all  our  operating  losses  have  resulted  from  costs  incurred  in  connection  with  our  research  and
development programs and from selling, general and administrative costs associated with our operations, including our commercialization
activities. As of December 31, 2022, we had not yet generated revenue from drug sales of BRIUMVI. BRIUMVI first became commercially
available in the United States in January of 2023. Even with the commercialization of BRIUMVI and the future commercialization of our
other  drug  candidates,  we  may  not  become  profitable.  Our  ability  to  achieve  profitability  depends  on  our  ability  to  generate  revenue  and
many  other  factors,  including  our  ability  to  obtain  regulatory  approval  for  our  drug  candidates;  successfully  complete  any  post-approval
regulatory  obligations;  and  successfully  commercialize  our  drug  candidates  alone  or  in  partnership.  We  may  continue  to  incur  substantial
operating losses even if we begin to generate revenues from our drug candidates.

As of December 31, 2022, we had $174.1 million in cash and cash equivalents, and investment securities. We anticipate that our
cash, cash equivalents, and investment securities as of December 31, 2022, capital contractually available under our existing Amended Loan
Agreement, and forecasted revenue, will provide sufficient liquidity for more than a twelve-month period from the date of filing this Annual
Report on Form 10-K. The actual amount of cash that we will need to operate is subject to many factors, including, but not limited to, our
BRIUMVI commercialization efforts, preparations for the potential commercialization of our other drug candidates, and the timing, design
and conduct of clinical trials for our drug candidates. We are dependent upon significant future financing to provide the cash necessary to
execute our ongoing and future operations, including the commercialization of any of our drug candidates.

Our common stock is quoted on the Nasdaq Capital Market and trades under the symbol “TGTX.”

RECENTLY ISSUED ACCOUNTING STANDARDS

Management  does  not  believe  that  any  recently  issued,  but  not  yet  effective,  accounting  pronouncements,  if  currently  adopted,

would have an effect on the Company’s financial statements.

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USE OF ESTIMATES

TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

The  preparation  of  financial  statements  in  conformity  with  U.S.  generally  accepted  accounting  principles  (GAAP)  requires
management to make estimates and judgments that affect the reported amounts of assets and liabilities and the disclosure of contingent assets
and  liabilities  at  the  date  of  the  financial  statements  and  the  reported  amounts  of  revenues  and  expenses  during  the  applicable  reporting
period. On an ongoing basis, we evaluate our estimates and judgments, including those related to revenue, accrued clinical trial expenses and
stock-based compensation. Actual results could differ from those estimates. Such differences could be material to the financial statements.

CASH AND CASH EQUIVALENTS

We treat liquid investments with original maturities of less than three months when purchased as cash and cash equivalents.

RESTRICTED CASH

We record cash pledged or held in trust as restricted cash. As of December 31, 2022 and 2021, we have approximately $1.3 million

of restricted cash pledged to secure a line of credit as a security deposit for an Office Agreement (see Note 7).

INVESTMENT SECURITIES

Investment securities at December 31, 2022 and 2021 consist of short-term and long-term government securities. We classify these
securities as held-to-maturity. Held-to-maturity securities are those securities in which we have the ability and intent to hold the security until
maturity.  Held-to-maturity  securities  are  recorded  at  amortized  cost,  adjusted  for  the  amortization  or  accretion  of  premiums  or  discounts.
Premiums and discounts are amortized or accreted over the life of the related held-to-maturity security as an adjustment to yield using the
effective interest method.

A decline in the market value of any investment security below cost that is deemed to be other than temporary, results in a reduction
in the carrying amount to fair value. The impairment is charged to operations and a new cost basis for the security is established. Other-than-
temporary impairment charges are included in interest and other income (expense), net. Dividend and interest income are recognized when
earned.

CREDIT RISK

Financial  instruments  that  potentially  subject  the  Company  to  concentrations  of  credit  risk  consist  primarily  of  cash  and  cash
equivalents and short-term investments. The Company maintains its cash and cash equivalents and short-term investments with high-credit
quality financial institutions. At times, such amounts may exceed federally-insured limits.

REVENUE RECOGNITION

Pursuant to 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 be entitled in exchange for those goods or services. To achieve this core principle,
Topic  606  includes  provisions  within  a  five-step  model  that  includes  i)  identifying  the  contract  with  a  customer,  ii)  identifying  the
performance  obligations  in  the  contract,  iii)  determining  the  transaction  price,  iv)  allocating  the  transaction  price  to  the  performance
obligations, and v) recognizing revenue when, or as, an entity satisfies a performance obligation.

At  contract  inception,  we  assess  the  goods  or  services  promised  within  each  contract  and  assess  whether  each  promised  good  or
service is distinct and determine those that are performance obligations. We then recognize as revenue the amount of the transaction price that
is allocated to the respective performance obligation when the performance obligation is satisfied.

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TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Product Revenue, Net – The Company recognizes product revenues, net of variable consideration related to certain allowances and
accruals, when the customer takes control of the product, which is typically upon delivery to the customer. Product revenue is recorded at the
net sales price, or transaction price. The Company records product revenue reserves, which are classified as a reduction in product revenues,
to  account  for  the  components  of  variable  consideration.  Variable  consideration  includes  the  following  components,  which  are  described
below: chargebacks, government rebates, trade discounts and allowances, product returns, and co-payment assistance.

These reserves are based on estimates of the amounts earned or to be claimed on the related sales and are classified as reductions of
accounts receivable (if the amount is expected to be settled with a credit against the Company's customer account) or a liability (if the amount
is  expected  to  be  settled  with  a  cash  payment).  The  Company's  estimates  of  reserves  established  for  variable  consideration  are  calculated
based upon a consistent application of the expected value method, which is the sum of probability-weighted amounts in a range of possible
consideration amounts. These estimates reflect the Company's current contractual and statutory requirements, specific known market events
and trends, industry data, and forecasted customer buying and payment patterns. The amount of variable consideration that is included in the
transaction price may be subject to constraint and is included in net product revenues only to the extent that it is probable that a significant
reversal in the amount of the cumulative revenue recognized will not occur in a future period. Actual amounts of consideration received may
ultimately differ from the Company's estimates. If actual results vary, the Company adjusts these estimates, which could have an effect on
earnings in the period of adjustment.

Chargebacks  and  Administrative  Fees:  Chargebacks  for  discounts  represent  the  Company's  estimated  obligations  resulting  from
contractual commitments to sell product to qualified healthcare providers and government agencies at prices lower than the list prices charged
to the customers who directly purchase the product from the Company. The customers charge the Company for the difference between what
the customers pay the Company for the product and the customers’ ultimate contractually committed or government required lower selling
price  to  the  qualified  healthcare  providers.  As  part  of  the  Company's  contractual  commitments  to  sell  product  to  qualified  healthcare
providers, the Company pays fees for administrative services, such as account management and data reporting.

Government Rebates: Government rebates consist of Medicare, Tricare, and Medicaid rebates. These reserves are recorded in the
same  period  the  related  revenue  is  recognized.  For  Medicare,  the  Company  also  estimates  the  number  of  patients  in  the  prescription  drug
coverage gap for whom it will owe a rebate under the Medicare Part D program.

GPO  and  Payor  Rebates:  The  Company  contracts  with  various  private  payor  organizations  and  group  purchasing  organizations
(GPO), primarily insurance companies, pharmacy benefit managers and clinics, for the payment of rebates with respect to utilization of our
product. The Company estimates these rebates and records such estimates in the same period the related revenue is recognized, resulting in a
reduction of product revenue and the establishment of a current liability.

Trade Discounts and Allowances: The Company provides its customers with discounts that are explicitly stated in the contracts and
are  recorded  in  the  period  the  related  product  revenue  is  recognized.  In  addition,  the  Company  also  receives  sales  order  management,
inventory management, and data services from its customers in exchange for certain fees.

Product Returns: Consistent with industry practice, the Company generally offers customers a limited right of return for product that
has been purchased from the Company. The Company estimates the amount of its product sales that may be returned by its customers and
records this estimate in the period the related product revenue is recognized. The Company currently estimates product return liabilities based
on data from similar products and other qualitative considerations, such as visibility into the inventory remaining in the distribution channel.

Subject  to  certain  limitations,  the  Company’s  return  policy  allows  for  eligible  returns  of  UKONIQ  for  credit  under  the  following

circumstances:

● receipt of damaged product;
● shipment errors that were a result of an error by the Company;
● expired product that is returned during the period beginning three months prior to the product’s expiration and ending six months after

the expiration date;

● product subject to a recall; and
● product that the Company, at its sole discretion, has specified can be returned for credit.

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TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

As of December 31, 2022, the Company has received $0.6 million in returns as a result of the market withdrawal of UKONIQ.

Co-Payment  Assistance  Programs:  Co-payment  assistance  is  provided  to  qualified  patients,  whereby  the  Company  may  provide
financial  assistance  to  patients  with  prescription  drug  co-payments  required  by  the  patient's  insurance  provider.  Reserves  for  co-payment
assistance are recorded in the same period the related revenue is recognized.

ACCOUNTS RECEIVABLE

In  general,  accounts  receivable  consists  of  amounts  due  from  customers,  net  of  customer  allowances  for  cash  discounts,  product
returns and chargebacks. Our contracts with customers have standard payment terms. We analyze accounts that are past due for collectability,
and regularly evaluate the creditworthiness of our customers so that we can properly assess and respond to changes in their credit profiles. As
of December 31, 2022, due to the product withdrawal in April of 2022, there are no outstanding net receivables from customers.

COST OF PRODUCT REVENUE

Cost of product revenue consists primarily of materials and third-party manufacturing costs, as well as freight and royalties owed to
our  licensing  partner  for  UKONIQ  sales.  Based  on  our  policy  to  expense  costs  associated  with  the  manufacture  of  our  products  prior  to
regulatory  approval,  the  manufacturing  costs  of  UKONIQ  units  recognized  as  revenue  during  the  year  ended  December  31,  2022  were
expensed prior to receipt of FDA approval on February 5, 2021, and therefore are not included in costs of product revenue during the current
period.

INVENTORY

Prior to regulatory approval, we expense costs relating to the production of inventory as research and development expense in the
period incurred. Following regulatory approval, costs to manufacture those approved products will be capitalized. Inventories are stated at the
lower  of  cost  or  estimated  net  realizable  value  with  cost  based  on  the  first-in-first-out  method.  Inventory  that  can  be  used  in  either  the
production of clinical or commercial products is expensed as research and development costs when identified for use in clinical trials.

Prior to the approval of UKONIQ, all manufacturing and other potential costs related to the commercial launch of UKONIQ were

expensed to research and development expense in the period incurred.

RESEARCH AND DEVELOPMENT COSTS

Generally, research and development costs are expensed as incurred. Research and development expenses consist primarily of costs
incurred  to  third-party  service  providers  for  the  conduct  of  research,  preclinical  and  clinical  studies,  contract  manufacturing  costs,  license
milestone fees, personnel costs for our research and development employees, consulting, and other related expenses. We recognize research,
preclinical  and  clinical  study  expenses  based  on  services  performed,  pursuant  to  contracts  with  third-party  research  and  development
organizations  that  conduct  and  manage  research,  preclinical  and  clinical  activities  on  our  behalf.  We  accrue  these  expenses  based  on  the
progress or stage of completion of services and the contracted fees to be paid for such services. If the actual timing of the performance of
services or the level of effort varies from the original accrual, we will adjust the accrual accordingly. With respect to clinical trial costs, the
financial terms of these agreements are subject to an initial negotiation and vary from contract to contract. Payments under these contracts
may be uneven and depend on factors such as the achievement of certain events, the successful recruitment of patients, the completion of
portions of the clinical trial or similar conditions. As such, certain expense accruals related to clinical site costs are recognized based on the
degree of performance of the event or events specified in the specific clinical study or trial contract.

Prepaid research and development in our consolidated balance sheets includes, among other things, costs related to agreements with
CROs,  certain  costs  to  third-party  service  providers  related  to  development  and  manufacturing  services  as  well  as  clinical  development.
These agreements often require payments in advance of services performed or goods received. Accordingly, as of December 31, 2022 and
December 31, 2021, we recorded approximately $4.2 million and $11.9 million, respectively, in prepaid research and development related to
such advance agreements.

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INCOME TAXES

TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future
tax consequences attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and
their respective tax bases, operating losses and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax
rates 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 operations in the period that includes the enactment date. If the
likelihood of realizing the deferred tax assets or liability is less than “more likely than not,” a valuation allowance is then created.

We, and our subsidiaries, file income tax returns in the U.S. federal jurisdiction and in various states. We have tax net operating loss
carryforwards that are subject to examination for a number of years beyond the year in which they were generated for tax purposes. Since a
portion of these net operating loss carryforwards may be utilized in the future, many of these net operating loss carryforwards will remain
subject to examination. We recognize interest and penalties related to uncertain income tax positions in income tax expense. Refer to Note 8
for further information on impact of tax reform.

The Coronavirus Aid, Relief, and Economic Security Act of 2020 (CARES Act) was enacted on March 27, 2020 in response to the
economic fallout of the COVID-19 pandemic in the United States. There are several provisions of the CARES Act that were considered in the
December 31, 2022 year-end tax provision. However, the Company chose not to utilize any provisions or participate in certain programs due
to lack of a benefit to the Company.

STOCK-BASED COMPENSATION

The  Company  measures  employee  and  non-employee  stock-based  compensation  based  on  the  grant  date  fair  value  of  the  stock-
based compensation award. The Company grants stock options at exercise prices equal to the fair value of the Company’s common stock on
the date of grant, based on observable market prices. The Company uses the Black-Scholes option-pricing model to measure the fair value of
stock  option  awards.  We  recognize  all  stock-based  payments  to  employees  and  non-employee  directors  (as  compensation  for  service)  as
noncash compensation expense in the consolidated financial statements. Stock-based compensation expense recognized each period is based
on the value of the portion of stock-based payment awards that is ultimately expected to vest during the period. Forfeitures are recognized as
they occur.

In addition, because some of the options, restricted stock and warrants issued to employees, consultants and other third parties vest
upon  achievement  of  certain  milestones,  the  total  expense  is  uncertain.  Compensation  expense  for  such  awards  that  vest  upon  the
achievement of milestones is recognized when the achievement of such milestones occurs.

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BASIC AND DILUTED NET LOSS PER COMMON SHARE

TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Basic net loss per share of our common stock is calculated by dividing net loss applicable to the common stock by the weighted-
average number of our common stock outstanding for the period. Diluted net loss per share of common stock is the same as basic net loss per
share of common stock since potentially dilutive securities from stock options, stock warrants and convertible preferred stock would have an
antidilutive effect either because we incurred a net loss during the period presented or because such potentially dilutive securities were out of
the money and the Company realized net income during the period presented. The amounts of potentially dilutive securities excluded from
the  calculation  were  12,650,658,  13,280,608  and  11,976,276  at  December  31,  2022,  2021  and  2020,  respectively.  During  the  years  ended
December 31, 2022, 2021 and 2020, the Company incurred a net loss; therefore, all of the securities are antidilutive and excluded from the
computation of diluted loss per share.

The following table summarizes our potentially dilutive securities at December 31, 2022, 2021 and 2020:

 Unvested restricted stock
 Options
Warrants
 Shares issuable upon note conversion
 Total

LONG-LIVED ASSETS AND GOODWILL

2022

7,232,254  
5,135,685  
262,100

20,619  
12,650,658  

December 31, 
2021
10,532,029  
2,467,537  
262,100

18,942  
13,280,608  

2020
9,285,020
2,526,166
147,058
18,032
11,976,276

Long-lived assets are reviewed for potential impairment when circumstances indicate that the carrying value of long-lived tangible
and intangible assets with finite lives may not be recoverable. Management’s policy in determining whether an impairment indicator exists, a
triggering event, comprises measurable operating performance criteria as well as qualitative measures. If an analysis is necessitated by the
occurrence  of  a  triggering  event,  we  make  certain  assumptions  in  determining  the  impairment  amount.  If  the  carrying  amount  of  an  asset
exceeds its estimated future cash flows, an impairment charge is recognized.

Goodwill is reviewed for impairment annually, or earlier when events arise that could indicate that an impairment exists. We test for
goodwill  impairment  using  a  two-step  process.  The  first  step  compares  the  fair  value  of  the  reporting  unit  with  the  unit’s  carrying  value,
including  goodwill.  When  the  carrying  value  of  the  reporting  unit  is  greater  than  fair  value,  the  unit’s  goodwill  may  be  impaired,  and  the
second step must be completed to measure the amount of the goodwill impairment charge, if any. In the second step, the implied fair value of
the reporting unit’s goodwill is compared with the carrying amount of the unit’s goodwill. If the carrying amount is greater than the implied
fair value, the carrying value of the goodwill must be written down to its implied fair value. We will continue to perform impairment tests
annually,  at  December  31,  and  whenever  events  or  changes  in  circumstances  suggest  that  the  carrying  value  of  an  asset  may  not  be
recoverable. There was no impairment to goodwill as of December 31, 2022.

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NOTE 2 - REVENUE RECOGNITION

Gross-to-Net Sales Adjustments

TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

To date our only source of product revenue has been from the U.S. sales of UKONIQ, which we began shipping to our customers in 

February 2021. The voluntary withdrawal of UKONIQ from the U.S. market was announced on April 15, 2022.  Effective May 31, 2022, 
UKONIQ was officially withdrawn from the market. We record our best estimate for sales discounts and allowances to which customers are 
likely to be entitled. The reconciliation of gross product sales to net product sales by each significant category of gross-to-net adjustments 
was as follows for the year ended December 31, 2022:

(in thousands)

Gross product revenue
Gross-to-net adjustments:
Chargebacks and administrative fees
Trade discounts and allowances
Government rebates and co-payment assistance
Sales returns and allowances
Total gross-to-net adjustments(1)
Net product revenue

Year ended

December 31, 

2022

December 31, 

2021

$

$

$

4,119

(367)
(182)
(229)
(708)
(1,486)
2,633

$

$

$

8,172

(840)
(383)
(372)
(40)
(1,635)
6,537

(1) As of December 31, 2022 and 2021, approximately $0.2 million and $0.4 million of estimated gross-to-net-accruals have been
recorded  as  a  reduction  of  accounts  receivable,  net  and  within  accounts  payable  and  accrued  expenses  on  the  consolidated
balance sheets.

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NOTE 3 – INVESTMENT SECURITIES

TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Our investments as of December 31, 2022 and 2021 are classified as held-to-maturity. Held-to-maturity investments are recorded at

amortized cost.

The following tables summarize our investment securities at December 31, 2022 and 2021:

(in thousands)
Short-term investments:
Obligations of domestic governmental agencies (maturing between January 2023
and December 2023) (held-to-maturity)

Long-term investments:
Obligations of domestic governmental agencies (maturing between January 2024
and February 2024) (held-to-maturity)

Total short-term and long-term investment securities

Short-term investments:
Obligations of domestic governmental agencies (maturing between January 2022
and April 2022) (held-to-maturity)

Long-term investments:
Obligations of domestic governmental agencies (maturing between February 2023
and June 2023) (held-to-maturity)

Total short-term and long-term investment securities

NOTE 4 – FAIR VALUE MEASUREMENTS

  Amortized
cost, as
adjusted

December 31, 2022

  Gross
unrealized

  Gross
unrealized

     holding gains      holding losses    

  Estimated
fair value

$

59,374

$

$

1,053

$

58,321

12,404
71,778

$

$

— $

429
1,482

$

11,975
70,296

December 31, 2021

     Amortized     
cost, as
adjusted

Gross
unrealized
holding gains

Gross
unrealized
holding losses

Estimated fair
value

$

15,876

$

— $

4

$

15,872

35,533
51,409

$

$

— $

160
164

$

35,373
51,245

We  measure  certain  financial  assets  and  liabilities  at  fair  value  on  a  recurring  basis  in  the  financial  statements.  The  fair  value
hierarchy ranks the quality and reliability of inputs, or assumptions, used in the determination of fair value and requires financial assets and
liabilities carried at fair value to be classified and disclosed in one of the following three categories:

● Level 1 – quoted prices in active markets for identical assets and liabilities;

● Level 2 – inputs other than Level 1 quoted prices that are directly or indirectly observable; and

● Level 3 – unobservable inputs that are not corroborated by market data.

As of December 31, 2022 and 2021, the fair values of cash and cash equivalents, restricted cash, accounts receivable, and notes and

interest payable approximate their carrying value.

At the time of our merger (we were then known as Manhattan Pharmaceuticals, Inc. (Manhattan)) with Ariston Pharmaceuticals, Inc.
(Ariston) in March 2010, Ariston issued $15.5 million of five-year 5% notes payable (the 5% Notes) in satisfaction of several note payable
issuances.  The  5%  Notes  and  accrued  and  unpaid  interest  thereon  are  convertible  at  the  option  of  the  holder  into  common  stock  at  the
conversion price of $1,125 per share. We have no obligations under the 5% Notes aside from the conversion feature.

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TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

The following tables provide the fair value measurements of applicable financial liabilities as of December 31, 2022 and 2021:

(in thousands)

5% Notes
Total

5% Notes
Total

$
$

$
$

Financial liabilities at fair value as of December 31, 2022
Total
Level 1

Level 3

Level 2

— $
— $

— $
— $

243
243

$
$

243
243

Financial liabilities at fair value as of December 31, 2021
Total
Level 1

Level 3

Level 2

— $
— $

— $
— $

360
360

$
$

360
360

The Level 3 amounts above represent the fair value of the 5% Notes and related accrued interest.

The Company’s financial instruments include cash, cash equivalents consisting of money market funds, accounts receivable,
accounts payable and debt. Cash, cash equivalents, accounts payable and debt are stated at their respective historical carrying amounts, which
approximate fair value due to their short-term nature.

The following table summarizes the changes in Level 3 instruments for the years ended December 31, 2022 and 2021:

(in thousands)
Balance at January 1, 2021

Interest accrued on face value of 5% Notes
Change in fair value of Level 3 liabilities

Balance at December 31, 2021

Interest accrued on face value of 5% Notes
Change in fair value of Level 3 liabilities

Balance at December 31, 2022

     $

$

938
1,023
(1,601)
360
1,073
(1,190)
243

The  change  in  the  fair  value  of  the  Level  3  liabilities  is  reported  in  other  (income)  expense  in  the  accompanying  consolidated

statements of operations.

NOTE 5 – STOCKHOLDERS’ EQUITY

Preferred Stock

Our amended and restated certificate of incorporation authorizes the issuance of up to 10,000,000 shares of preferred stock, $0.001
par  value,  with  rights  senior  to  those  of  our  common  stock,  issuable  in  one  or  more  series.  Upon  issuance,  we  can  determine  the  rights,
preferences,  privileges  and  restrictions  thereof.  These  rights,  preferences  and  privileges  could  include  dividend  rights,  conversion  rights,
voting  rights,  terms  of  redemption,  liquidation  preferences,  sinking  fund  terms  and  the  number  of  shares  constituting  any  series  or  the
designation of such series, any or all of which may be greater than the rights of common stock.

Stockholder Rights Plan

On  July  18,  2014,  we  adopted  a  stockholder  rights  plan.  The  stockholder  rights  plan  is  embodied  in  the  Stockholder  Protection
Rights Agreement dated as of July 18, 2014 (the Rights Agreement), between us and American Stock Transfer & Trust Company, LLC, as
rights agent (the Rights Agent).

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TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Accordingly, the Board of Directors declared a distribution of one right (a “Right”) for each outstanding share of common stock, to
stockholders of record at the close of business on July 28, 2014, for each share of common stock issued (including shares distributed from
Treasury) by us thereafter and prior to the Separation Time (as defined in the Rights Agreement), and for certain shares of common stock
issued  after  the  Separation  Time.  Following  the  Separation  Time,  each  Right  entitles  the  registered  holder  to  purchase  from  us  one  one-
thousandth  (1/1,000)  of  a  share  of  Series  A  Junior  Participating  Preferred  Stock,  par  value  $0.001  per  share  (the  Preferred  Stock),  at  a
purchase  price  of  $100.00  (the  Exercise  Price),  subject  to  adjustment.  The  description  and  terms  of  the  Rights  are  set  forth  in  the  Rights
Agreement. Each one one-thousandth of a share of Preferred Stock has substantially the same rights as one share of common stock. Subject to
the terms and conditions of the Rights Agreement, Rights become exercisable ten days  after  the  public  announcement  that  a  “Person”  has
become an “Acquiring Person” (as each such term is defined in the Rights Agreement). Any Rights held by an Acquiring Person are void and
may not be exercised.

The Rights Agreement was approved by our Board of Directors on July 18, 2014. The Rights will expire at the close of business on

its ten-year anniversary, unless earlier exchanged or terminated by us.

Common Stock

Our  amended  and  restated  certificate  of  incorporation  authorizes  the  issuance  of  up  to  175,000,000  shares  of  $0.001  par  value

common stock.

On September 5, 2019, we filed an automatic “shelf registration” statement on Form S-3 (the 2019 WKSI Shelf) as a “well-known
seasoned issuer” as defined in Rule 405 under the Securities Act, which registered an unlimited and indeterminate amount of debt or equity
securities for future issuance and sale. The 2019 WKSI Shelf was declared effective in September 2019. In connection with the 2019 WKSI
Shelf, we entered into an At-the-Market Issuance Sales Agreement (the 2020 ATM) with Jefferies LLC, Cantor Fitzgerald & Co. and B. Riley
Securities, Inc. (each a 2020 Agent and collectively, the 2020 Agents), relating to the sale of shares of our common stock. Under the 2020
ATM,  we  paid  the  2020  Agents  a  commission  rate  of  up  to  3.0%  of  the  gross  proceeds  from  the  sale  of  any  shares  of  common  stock.  In
November 2020, we entered into an At-the-Market Issuance Sales Agreement (the 2021 ATM) with the same terms and agents (each a 2021
Agent and collectively, the 2021 Agents) as the 2020 ATM.

During the year ended December 31, 2020, we sold a total of 8,528,286 shares of common stock under the 2020 ATM for aggregate
total  gross  proceeds  of  approximately  $187.5  million  at  an  average  selling  price  of  $21.99  per  share,  resulting  in  net  proceeds  of
approximately $184.2 million after deducting commissions and other transactions costs.

During the year ended December 31, 2020, we sold a total of 804,100 shares of common stock under the 2021 ATM for aggregate
total gross proceeds of approximately $33.9 million at an average selling price of $42.18 per share, resulting in net proceeds of approximately
$33.3 million after deducting commissions and other transactions costs.

During the year ended December 31, 2021, we sold a total of 72,000 shares of common stock under the 2021 ATM for aggregate
total gross proceeds of approximately $2.5 million at an average selling price of $34.25 per share, resulting in net proceeds of approximately
$2.4 million after deducting commissions and other transactions costs.

In May 2020, we completed an underwritten public offering of 8,500,000 shares of our common stock (plus an underwriter option to
purchase up to an additional 1,275,000 shares of common stock, which was exercised) at a price of $18 per share. Net proceeds from this
offering,  including  the  overallotment,  were  approximately  $165.1  million,  net  of  underwriting  discounts  and  offering  expenses  of
approximately $10.8 million.

On  December  17,  2020,  we  completed  a  public  offering  of  6,320,000  shares  of  our  common  stock  (plus  a  30-day  underwriter
overallotment option to purchase up to an additional 948,000 shares of common stock, which was exercised) at a price of $43.50 per share.
Net proceeds from this offering, including the overallotment, were approximately $297.2 million after underwriting discounts and offering
expenses of approximately $19.0 million.

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TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

On September 2, 2022, we filed an automatic “shelf registration” statement on Form S-3 (the 2022 WKSI Shelf) as a “well-known
seasoned issuer” as defined in Rule 405 under the Securities Act, which registered an unlimited and indeterminate amount of debt or equity
securities for future issuance and sale. The 2022 WKSI Shelf was declared effective in September 2022. In connection with the 2022 WKSI
Shelf, we entered into an At-the-Market Issuance Sales Agreement (the 2022 ATM) with Cantor Fitzgerald & Co. and B. Riley Securities,
Inc. (each a 2022 Agent and collectively, the 2022 Agents), relating to the sale of shares of our common stock. Under the 2022 ATM, we will
pay the 2022 Agents a commission rate of up to 3.0% of the gross proceeds from the sale of any shares of common stock. The 2022 ATM has
replaced the 2021 ATM as the only active ATM program.

We had no activity on the 2021 ATM or 2022 ATM during the year ended December 31, 2022.

The  2022  WKSI  Shelf  is  currently  our  only  active  shelf  registration  statement.  We  may  offer  any  combination  of  the  securities
registered under the 2022 WKSI Shelf from time to time in response to market conditions or other circumstances if we believe such a plan of
financing is in the best interests of our stockholders. We may need to file additional shelf registration statements in the future to provide us
with the flexibility to raise additional capital to finance our operations as needed.

Treasury Stock

As  of  December  31,  2022  and  2021,  41,309  shares  of  common  stock  are  being  held  in  Treasury,  at  a  cost  of  approximately  $0.2

million, representing the fair market value on the date the shares were surrendered to the Company to satisfy employee tax obligations.

Equity Incentive Plans

The  TG  Therapeutics,  Inc.  2022  Incentive  Plan  (the  2022  Incentive  Plan)  was  approved  by  stockholders  in  June  2022  with  17
million shares available to be issued, of which not more than 10 million shares may be issued pursuant to “full-value awards.” Full-value
awards include any award other than an option or stock appreciation right and which is settled by the issuance of stock. As of December 31,
2022, 2,196,097 shares of restricted stock and 2,290,000 options were outstanding, and up to an additional 12,251,485 shares were available
to be issued under the 2022 Incentive Plan.

The TG Therapeutics, Inc. Amended and Restated 2012 Incentive Plan (the 2012 Incentive Plan) was approved by stockholders in
June 2020. As of December 31, 2022, 6,536,189 shares of restricted stock and 2,845,685 options were outstanding, and no additional shares
were available to be issued under the 2012 Incentive Plan as the 2022 Incentive Plan is now the only active incentive plan.

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Stock Options

TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

The estimated fair value of the options granted in the years ended December 31, 2022, 2021 and 2020 was determined utilizing the
Black-Scholes option-pricing model at the date of grant. The following table summarizes stock option activity for the years ended December
31, 2022, 2021 and 2020:

Outstanding at January 1, 2020
Granted
Exercised
Forfeited
Expired
Outstanding at December 31, 2020
Granted
Exercised
Forfeited
Expired
Outstanding at December 31, 2021
Granted
Exercised
Forfeited
Expired
Outstanding at December 31, 2022

Exercisable at December 31, 2022

Number of 
shares
2,605,730
75,000
(35,814)
(118,750)
-
2,526,166

— $

(52,694)
(5,935)
—
2,467,537
2,975,000
(142,409)
(164,443)
—
5,135,685

2,107,583

$

$

$

Weighted-
 average 
exercise price
6.73
8.21
4.10
10.16
-
6.99

     Weighted-     
average
contractual 
term
(in years)
8.92

Aggregate 
intrinsic value
11,706,110

—  
4.10  
4.10  
—  

7.06
7.00
4.10
7.84
—
7.10  

6.70  

8.10

$ 115,472,832

6.99

$ 29,503,551

5.09

$ 25,064,799

5.64

$ 11,238,429

Total expense associated with the stock options was approximately $3.3 million, $2.9 million and $6.0 million during the years

ended December 31, 2022, 2021 and 2020, respectively. As of December 31, 2022, there was approximately $8.0 million of total
unrecognized compensation cost related to unvested time-based stock options, which is expected to be recognized over a weighted-average
period of 3.3 years. As of December 31, 2022, the stock options outstanding include options granted to both employees and non-employees
which are both time-based and milestone-based. Stock-based compensation for milestone-based options will be recorded if and when a
milestone occurs. We recognized stock-based compensation expense of $1.2 million during the year ended December 31, 2022 for these stock
options.

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TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

The fair value of the Company’s option awards granted in each of the following years were estimated using the assumptions below:

Volatility
Expected term (in years)
Risk-free rate
Expected dividend yield

Restricted Stock

Year Ended
December 31, 2022      December 31, 2021 December 31, 2020

88.37-89.67 %
3.13-4.0
2.99-3.35 %
%
 —

N/A 186.91-191.05 %
N/A
N/A
N/A

5.0-6.25
0.34-0.54 %
%
 —

Certain employees, directors and consultants have been awarded restricted stock. The restricted stock vesting consists of milestone

and time-based vesting. The following table summarizes restricted share activity for the years ended December 31, 2022, 2021 and 2020:

Outstanding at January 1, 2020
Granted
Vested
Forfeited
Outstanding at December 31, 2020
Granted
Vested
Forfeited
Outstanding at December 31, 2021
Granted
Vested
Forfeited
Outstanding at December 31, 2022

Number of shares

     Weighted-average 

grant date fair 
value

7,091,789  
4,909,829  
(1,087,918) 
(128,666) 
10,785,034  
2,738,974  
(1,302,737) 
(189,231) 

12,032,040
5,179,201
(6,291,999)
(2,186,956)
8,732,286

$

$

7.78
20.34
8.40
8.70
13.38
39.49
18.14
21.80
18.67
12.75
11.28
22.44
16.12

Total compensation expense associated with restricted stock grants was $15.8 million, $58.4 million and $74.2 million during

the years ended December 31, 2022, 2021 and 2020, respectively. As of December 31, 2022, there was approximately $29.2 million of total
unrecognized compensation expense related to unvested time-based restricted stock, which is expected to be recognized over a weighted-
average period of 2.6 years. This amount does not include, as of December 31, 2022, 1,961,258 shares of restricted stock outstanding which
are milestone-based and vest upon certain corporate milestones. Milestone-based noncash compensation expense will be measured and
recorded if and when a milestone occurs.

Warrants

The Company’s only outstanding warrants are the warrants issued to Hercules as part of our debt agreement to purchase 147,058 and
115,042 shares of common stock with exercise prices of $4.08 and $17.95, respectively. See Note 6 for further details. There will not be any
ongoing stock compensation expense volatility associated with these warrants.

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NOTE 6 – LOAN PAYABLE

TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

On February 28, 2019 (the Closing Date), we entered into a term loan facility of up to $60.0 million (Term Loan) with Hercules
Capital, Inc. (Hercules), the proceeds of which were used for research and development programs and for general corporate purposes. The
Term  Loan  is  governed  by  a  loan  and  security  agreement,  dated  February  28,  2019  (the  Loan  Agreement),  which  provides  for  up  to  four
separate  advances.  The  first  advance  of  $30.0  million  was  drawn  on  the  Closing  Date.  An  additional  $30.0  million  was  available  with
different milestones and time points that have lapsed.

On  December  30,  2021  (the  First  Amendment  Closing  Date),  the  Company  entered  into  an  Amended  and  Restated  Loan  and
Security Agreement (the Amended Loan Agreement) with Hercules Capital, Inc. The Amended Loan Agreement amended the terms of the
Loan  Agreement  to,  among  other  things,  (i)  increase  the  aggregate  principal  amount  of  the  loan,  available  at  the  Company’s  option,  from
$60.0 million to $200.0 million (the Amended Term Loan), (ii) issue a first advance of $70.0 million drawn at the First Amendment Closing
date,  a  portion  of  which  was  used  to  refinance  the  current  outstanding  loan  balance  of  approximately  $7.8  million  and  pay  for  expenses
incurred  by  the  Lender  in  executing  the  agreements,  (iii)  change  the  draw  amounts  and  dates  available  in  Tranche  2  through  Tranche  4
including increasing the amount available under Tranche 2 subject to the achievement of performance milestones from $10.0 million to $20.0
million, increasing the amount available under Tranche 3 subject to the achievement of performance milestones from $10.0 million to $45.0
million, and increasing the amount under Tranche 4 subject to the approval of Hercules’ investment committee from $10.0 million to $65.0
million, (iv) extend the maturity date of the facility from the original March 1, 2022 to January 1, 2026, (v) reset and extend the interest only
period  from  April  1,  2021  to  February  1,  2025  and  extendable  to  August  1,  2025  subject  to  the  achievement  of  certain  performance
milestones, and (vi) modify the cash interest rate to be the greater of either (a) the “prime rate” as reported in The Wall Street Journal plus
2.15%, and (b) 5.40%. The performance milestones are based on achievement of certain U.S. Food and Drug Administration approvals and
impact  the  potential  extension  of  the  interest  only  period,  access  to  future  advances  under  the  Loan  Agreement  and  minimum  cash  levels
required under the Amended Loan Agreement.

The Amended Loan Agreement contains financial covenants from and after October 15, 2022 that require the Company to maintain
certain levels of unrestricted cash and additional financial covenants related to market capitalization and unrestricted cash commencing on
July 1, 2023 at any time when the Amended Term Loan advances made under the Amended Loan Agreement are greater than $70 million.

The Amended Loan Agreement also contains warrant coverage of 2.95% of the total amount funded. A warrant (the Warrant) was
issued  by  the  Company  to  Hercules  to  purchase  115,042  shares  of  common  stock  with  an  exercise  price  of  $17.95  for  the  initial  amount
funded at closing. The Warrant shall be exercisable for seven years from the date of issuance. Hercules may exercise the Warrant either by (a)
cash or check or (b) through a net issuance conversion.

In addition, the Company is required to pay a final payment fee equal to 5.95% of the aggregate principal amount of the Term Loan

Advances.

The Company may, at its option, prepay the Amended Term Loan in full or in part, subject to a prepayment penalty equal to (i) 2.0%
of the principal amount prepaid if the prepayment occurs prior to the first anniversary of the First Amendment Closing Date, (ii) 1.5% of the
principal  amount  prepaid  if  the  prepayment  occurs  on  or  after  the  first  anniversary  and  prior  to  the  second  anniversary  of  the  First
Amendment Closing Date, and (iii) 1.0% of the principal amount prepaid if the prepayment occurs on or after the second anniversary and
prior to the third anniversary of the First Amendment Closing Date.

The  Company  evaluated  whether  the  Amended  Term  Loan  entered  into  in  December  2021  represented  a  debt  modification  or
extinguishment of the Term Loan in accordance with ASC 470-50, Debt – Modifications and Extinguishments. As a result of the repayment
and  retirement  of  the  Term  Loan,  the  Term  Loan  was  accounted  for  by  the  Company  under  the  extinguishment  accounting  model.  The
Company recorded a loss on extinguishment of debt of approximately $0.2 million on the Company’s statement of operations for the twelve
months ended December 31, 2021, representing the write-off of deferred financing costs.

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TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

The Company estimated the fair value of the Warrant using the Black-Scholes model based on the following key assumptions:

Exercise price
Common share price on date of issuance
Volatility
Risk-free interest rate
Expected dividend yield
Contractual term (in years)

     $
$

Amended Term Loan

17.95
19.35
184.4 %
1.44 %
— %

7.00 years

The Company incurred financing expenses of $7.4 million (including the fair value of the Warrant) related to the Amended Loan
Agreement which are recorded as debt issuance costs and as an offset to loan payable on the Company’s consolidated balance sheet. The debt
issuance costs are being amortized over the term of the debt using the straight-line method, which approximates the effective interest method,
and will be included in interest expense in the Company’s consolidated statements of operations. Amortization of debt issuance costs was
$1.8 million, $1.1 million and $0.9 million for the years ended December 31, 2022, 2021 and 2020, respectively. At December 31, 2022, the
remaining unamortized balance of debt issuance costs was $5.5 million.

The loan payable as of December 31, 2022 and 2021, is as follows:

(in thousands)
Loan payable
Add: Accreted Liability of final payment fee

Less: unamortized debt issuance costs

Less: principal payments
Total loan payable
Less: current portion
Loan payable non-current

NOTE 7 – LEASES

December 31, 
2022

December 31,
2021

$

70,000
6,667
76,667
(5,532)
71,135
—
71,135

—  
$

71,135

70,000
5,140
75,140
(7,377)
67,763
—
67,763
(975)
66,788

$

$

In October 2014, we entered into an agreement (the Office Agreement) with Fortress Biotech, Inc. (FBIO) to occupy approximately
45% of the 24,000 square feet of New York City office space leased by FBIO. The Office Agreement requires us to pay our respective share
of the average annual rent and other costs of the 15-year lease. We approximate an average annual rental obligation of $1.8 million under the
Office Agreement. We began to occupy this new space in April 2016, with rental payments beginning in the third quarter of 2016. At January
1, 2019, we recognized a lease liability and corresponding ROU asset of $9.5 million and $8.1 million, respectively, based on the present
value of the remaining lease payments for all of our leased office spaces, the majority of which is comprised of our New York City office
space. The present values of our lease liability and corresponding ROU asset are $11.9 million and $8.9 million, respectively, as of December
31, 2022. Our leases have remaining lease terms of approximately 2 years to 10 years. One lease has a renewal option to extend the lease for
an additional term of five years.

Also, in connection with this lease, in October 2014 we pledged $0.6 million to secure a line of credit as a security deposit for the
Office Agreement, which has been recorded as restricted cash in the accompanying consolidated balance sheets. Additional collateral of $0.6
million was pledged in April 2018 to increase the letter of credit for the office space.

In October 2019, we finalized a five-year lease for office space in New Jersey (the NJ Lease). We approximate an average annual

rental obligation of $0.3 million under the NJ Lease.

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TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

In  October  2021,  we  finalized  a  five-year  lease  for  office  space  in  North  Carolina  (the  NC  Lease).  We  approximate  an  average
annual  rental  obligation  of  $0.2  million  under  the  NC  Lease.  We  took  possession  of  this  space  in  February  2022,  with  rental  payments
beginning in April 2022.

The following components of lease expense are included in the Company’s consolidated statements of operations for the years ended

December 31, 2022, 2021, and 2020:

(in thousands)
Operating lease cost
Net lease cost

2022

2,671
2,671

$
$

$
$

Year ended
December 31, 
2021

2,154
2,154

$
$

2020

2,656
2,656

As of December 31, 2022, the weighted-average remaining operating lease term was 6.5 years and the weighted-average discount
rate for operating leases was 9.97%. Cash paid for amounts included in the measurement of operating lease liabilities during the year ended
December 31, 2022 was $2.3 million.

The balance sheet classification of lease liabilities was as follows:

(in thousands)
Liabilities
Lease liability current portion
Lease liability non-current
Total lease liability

As of December 31, 2022, the maturities of lease liabilities were as follows:

(in thousands)
2023
2024
2025
2026
2027
After 2027
Total lease payments
Less: interest
Present value of lease liabilities(*)

     December 31, 

2022

December 31,
2021

$

$

1,581
10,344
11,925

$

$

1,437
9,847
11,284

Operating
leases

2,375
2,388
2,100
2,080
1,913
6,541
17,397
(5,472)
11,925

$

$

(*)  As  our  leases  do  not  provide  an  implicit  rate,  we  use  our  incremental  borrowing  rate  based  on  the  information  available  at
commencement  date  and  considering  the  term  of  the  lease  to  determine  the  present  value  of  lease  payments.  We  used  the  incremental
borrowing  rate  of  10.25%  on  February  28,  2019,  for  leases  that  commenced  prior  to  that  date  through  December  31,  2021.  We  used  an
incremental borrowing rate of 5.65% for the NC lease.

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NOTE 8 – INCOME TAXES

TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

We account for income taxes under the asset and liability method. Deferred tax assets and liabilities are determined based on

differences between the financial reporting and tax basis of assets and liabilities and are measured using the enacted tax rates and laws that
will be in effect when the differences are expected to reverse. A valuation allowance is established when necessary to reduce deferred tax
assets to the amount expected to be realized. In determining the need for a valuation allowance, management reviews both positive and
negative evidence, including current and historical results of operations, future income projections and the overall prospects of our business.
Based upon management's assessment of all available evidence, we believe that it is more-likely-than-not that the deferred tax assets will not
be realizable, and therefore, a valuation allowance has been established. The valuation allowance for deferred tax assets was approximately
$400.4 million and $367.4 million as of December 31, 2022 and 2021, respectively.  

The Tax Cuts and Jobs Act of 2017 (TCJA) included changes to the treatment of research and development expenses under IRC 

Section 174.  Formerly, a company could deduct research and development expenses under IRC Section 174 as incurred.  Effective for tax 
years beginning after December 31, 2021, research and development expenses under IRC Section 174 are required to be capitalized, with an 
amortization period of 5 years for costs incurred in the US and 15 years for costs incurred in a non-US jurisdiction.  The Company incurred 
approximately $135.4 million of US research and development costs and approximately $38.5 million of non-US research and development
costs that were capitalized during the year ended December 31, 2022.

The Coronavirus Aid, Relief, and Economic Security Act of 2020 (CARES Act) was enacted on March 27, 2020 in response to the 
economic fall out of the COVID-19 pandemic in the United States.  The CARES Act allows employers to defer the deposit and payment of 
the employer’s share of Social Security taxes during the payroll tax deferral period of March 27, 2020 through December 31, 2020.  The 
CARES Act provides for half of the deferred payroll taxes to be paid by December 31, 2021 and the second half to be paid by December 31, 
2022.  The Company did not participate in this deferral program.

The Inflation Reduction Act of 2022 (IRA) was enacted on August 16, 2022.  The IRA provided for a Corporate Alternative 

Minimum Tax (Corp AMT), applicable to tax years beginning after December 31, 2022.  The Corp AMT will impose a 15% tax on 
companies with adjusted financial statement income of over $1 billion for US-based organizations.  At this time, it is not anticipated that the 
Corp AMT will be applicable for the Company.   

As of December 31, 2022, we have U.S. net operating loss carryforwards of approximately $1.3 billion , research and development

credit carryforwards (R&D credits) of approximately $42.0 million and business interest expense carryforward of $15.7 million.  For income 
tax purposes, these NOLs and R&D credits will expire in various amounts through 2039. NOLs generated after 2017 and the business interest 
expense carryforwards do not expire. The Tax Reform Act of 1986 contains provisions which limit the ability to utilize net operating loss 
carryforwards and R&D credit carryforwards in the case of certain events including significant changes in ownership interests.  The 
Exchange Transaction with TG Bio may have resulted in a “change in ownership” as defined by IRC Section 382 of the Internal Revenue 
Code of 1986, as amended. Additionally, stock issuance activities may have resulted in a “change in ownership” as defined by IRC Section 
382 of the Internal Revenue Code of 1986, as amended.  Accordingly, a substantial portion of the Company’s NOLs above may be subject to
annual limitations in reducing any future year’s taxable income, and a substantial portion of the R&D Credit carryforwards may be subject to
annual limitations in reducing any future year’s tax.

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Table of Contents

TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at

December 31, 2022 and 2021 are presented below.

(in thousands)
Deferred tax assets:
Net operating loss carryforwards
Research and development credit
Noncash compensation
Disallowed interest
Capitalized R&D Expenses
Other
Deferred tax asset, excluding valuation allowance

Less valuation allowance
Net deferred tax assets

$

2022

2021

$

303,729
42,031
10,325
3,882
39,411
985
400,363

295,985
35,665
32,356
2,434
—
1,006
367,446

(400,363)

$

— $

(367,446)
—

There was no current or deferred income tax expense for the year ended December 31, 2022. Income tax expense differed from

amounts computed by applying the US Federal income tax rate of 21% for the years ending December 31, 2022, 2021 and 2020, to pretax
loss as follows:

(in thousands)

Loss before income taxes, as reported in the consolidated statements of operations

Computed “expected” tax benefit

Increase (decrease) in income taxes resulting from:

Expected benefit from state and local taxes
Research and development credits
  Officer Compensation Limitation
Other
Stock options

Enactment of federal tax reform

Change in the balance of the valuation allowance for deferred tax assets

For the year ended December 31, 
2021

2020

2022

$

$

(198,335)

(41,650)

$

$

(348,101)

(73,101)

$

$

(279,381)

(58,670)

(7,242)
(6,389)
4,391
374
17,599

(3,445)
(8,337)
439
428
(6,726)

—  

32,917

—  

90,742

$

— $

— $

(10,801)
(5,265)

1,065
(1,558)
(14,763)
89,992
—

We file income tax returns in the U.S Federal and various state and local jurisdictions. With certain exceptions, the Company is no 
longer subject to U.S. Federal and state income tax examinations by tax authorities for years prior to 2019.  However, NOLs and tax credits 
generated from those prior years could still be adjusted upon audit.  

The Company would recognize interest and penalties, if any, to uncertain tax position in income tax expense in the statement of

operations. There was no accrual for interest and penalties related to uncertain tax positions for 2022. We do not believe that there will be a
material change in our unrecognized tax positions over the next twelve months. All of the unrecognized tax benefits, if recognized, would be
offset by the valuation allowance.

F-26

    
    
 
   
  
 
 
 
 
 
 
 
 
 
 
    
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

NOTE 9 – LICENSE AGREEMENTS

BRIUMVI (Ublituximab)

TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

In January 2012, we entered into an exclusive license agreement with LFB Biotechnologies, GTC Biotherapeutics and LFB/GTC
LLC,  all  wholly-owned  subsidiaries  of  LFB  Group,  relating  to  the  development  of  ublituximab  (the  LFB  License  Agreement).  Under  the
terms of the LFB License Agreement, we have acquired the exclusive worldwide rights (exclusive of France/Belgium) for the development
and commercialization of ublituximab. For the period ended December 31, 2022, we have incurred expenses of approximately $25.0 million
related to the achievement of certain milestones of the LFB License Agreement, $12.0 million of which is recorded in accounts payable as of
December 31, 2022. These expenses are included in other research and development expenses in the accompanying consolidated statements
of operations.

LFB  Group  is  eligible  to  receive  future  payments  of  approximately  $6.0  million,  upon  our  successful  achievement  of  certain
regulatory milestones, in addition to royalty payments on net sales of ublituximab at a royalty rate in the high-single digits. The license will
terminate on a country-by-country basis upon the expiration of the last licensed patent right or 15 years after the first commercial sale of a
product in such country, unless the agreement is earlier terminated (i) by LFB if the Company challenges any of the licensed patent rights, (ii)
by either party due to a breach of the agreement, or (iii) by either party in the event of the insolvency of the other party.

In November 2012, we entered into an exclusive (within the territory) sublicense agreement with Ildong Pharmaceutical Co. Ltd.
(Ildong)  relating  to  the  development  and  commercialization  of  ublituximab  in  South  Korea  and  Southeast  Asia.  Under  the  terms  of  the
sublicense  agreement,  Ildong  has  been  granted  a  royalty  bearing,  exclusive  right,  including  the  right  to  grant  sublicenses,  to  develop  and
commercialize ublituximab in South Korea, Taiwan, Singapore, Indonesia, Malaysia, Thailand, Philippines, Vietnam, and Myanmar.

An upfront payment of $2.0 million, which was received in December 2012, net of $0.3 million of income tax withholdings, is being
recognized as license revenue on a straight-line basis over the life of the agreement, which is through the expiration of the last licensed patent
right or 15 years after the first commercial sale of a product in such country, unless the agreement is earlier terminated, and represents the
estimated period over which we will have certain ongoing responsibilities under the sublicense agreement. We recorded license revenue of
approximately  $0.2  million  for  each  of  the  years  ended  December  31,  2022,  2021  and  2020,  and  at  December  31,  2022  and  2021,  have
deferred revenue of approximately $0.5 million and $0.6 million, respectively, associated with this $2 million payment (approximately $0.2
million of which has been classified in current liabilities at December 31, 2022 and 2021).

We may receive up to an additional $5.0 million in payments upon the achievement of pre-specified milestones. In addition, upon

commercialization, Ildong will make royalty payments to us on net sales of ublituximab in the sublicense territory.

TG-1701: BTK

In  January  2018,  we  entered  into  a  global  exclusive  license  agreement  with  Jiangsu  Hengrui,  to  acquire  worldwide  intellectual
property rights, excluding Asia but including Japan, and for the research, development, manufacturing, and commercialization of products
containing or comprising of any of Hengrui’s Bruton’s Tyrosine Kinase inhibitors containing the compounds of either TG-1701 (SHR1459 or
EBI1459) or TG1702 (SHR1266 or EBI1266). Hengrui is eligible to receive milestone payments totaling approximately $350 million upon
and subject to the achievement of certain milestones. Various provisions allow for payments in conjunction with the agreement to be made in
cash  or  our  common  stock,  while  others  limit  the  form  of  payment.  In  July  2020,  we  paid  Hengrui  $2.0  million  as  part  of  a  milestone  in
accordance with the license agreement. Royalty payments in the low double digits are due on net sales of licensed products and revenue from
sublicenses.

F-27

Table of Contents

TG-1801: anti-CD47/anti-CD19

TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

In June 2018, we entered into a Joint Venture and License Option Agreement with Novimmune to collaborate on the development
and  commercialization  of  Novimmune’s  novel  first-in-class  anti-CD47/anti-CD19  bispecific  antibody  known  as  TG-1801  (previously  NI-
1701).  The  companies  will  jointly  develop  the  product  on  a  worldwide  basis,  focusing  on  indications  in  the  area  of  hematologic  B-cell
malignancies.  We  serve  as  the  primary  responsible  party  for  the  development,  manufacturing  and  commercialization  of  the  product.
Milestone  payments  will  be  paid  based  on  early  clinical  development,  and  the  Company  will  be  responsible  for  the  costs  of  clinical
development  of  the  product  through  the  end  of  the  Phase  2  clinical  trials,  after  which  the  Company  and  Novimmune  will  be  jointly
responsible  for  all  development  and  commercialization  costs.  The  Company  and  Novimmune  will  each  maintain  an  exclusive  option,
exercisable at specific times during development, for the Company to license the rights to TG-1801, in which case Novimmune is eligible to
receive additional milestone payments totaling approximately $185 million as well as tiered royalties on net sales in the high single to low
double digits upon and subject to the achievement of certain milestones.

UKONIQ (umbralisib)

On  September  22,  2014,  we  exercised  our  option  to  license  the  global  rights  to  umbralisib,  thereby  entering  into  an  exclusive
licensing  agreement  (the  TGR-1202  License)  with  Rhizen  Pharmaceuticals,  SA  (Rhizen)  for  the  development  and  commercialization  of
umbralisib.  As  of  December  31,  2022,  we  have  incurred  approximately  $24.0  million  in  expense  related  to  the  achievement  of  certain
milestones of the Umbralisib License.

Under  the  terms  of  the  TGR  1202  License,  Rhizen  is  eligible  to  receive  approval  and  sales-based  milestone  payments  in  the
aggregate of approximately $175 million payable. For the year ended December 31, 2021, we paid Rhizen $12.0 million as part of a primary
indication approval milestone for launch of product in the US in accordance with the terms of the Umbralisib License. Additionally, Rhizen
receives  tiered  royalties  that  escalate  from  high  single  digits  to  low  double  digits  on  any  net  sales  of  umbralisib.  During  the  year  ended
December 31, 2022, the Company recorded $0.2 million related to the worldwide royalty due under the Umbralisib License in cost of product
revenue based on U.S. sales of UKONIQ and as of December 31, 2022, approximately $3,000 in royalties were payable under the Umbralisib
License. As a result of the withdrawal of UKONIQ from the U.S. market and discontinuation of all commercialization activities,  we do not
expect to incur any additional costs related to this license agreement.

TG-1501: Cosibelimab

In March 2015, we entered into a Global Collaboration Agreement (Collaboration Agreement) with Checkpoint for the development
and  commercialization  of  anti-PD-L1  and  anti-GITR  antibody  research  programs  in  the  field  of  hematological  malignancies.  The
Collaboration  Agreement  was  amended  in  June  2019  and  in  March  of  2020.  We  incurred  expenses  of  approximately  $0.1  million,  $0.1
million and $1.1 million for the years ended December 31, 2022, 2021 and 2020, respectively, the majority of which relates to manufacturing
expenses  and  milestone  payments  of  PD-L1.  The  relevant  expenses  are  recorded  in  other  research  and  development  in  the  accompanying
consolidated statements of operations.

NOTE 10 – RELATED PARTY TRANSACTIONS

In July 2015, we entered into a Shared Services Agreement (the Shared Services Agreement) with FBIO to share the cost of certain
services such as facilities use, personnel costs and other overhead and administrative costs. This Shared Services Agreement requires us to
pay our respective share of services utilized. In connection with the Shared Services Agreement, we incurred expenses of approximately $1.3
million,  $0.9  million  and  $0.8  million  for  shared  services  for  the  years  ended  December  31,  2022,  2021  and  2020,  respectively,  primarily
related to shared personnel. Mr. Weiss, our Chairman and Chief Executive Officer, also serves as a director and Executive Vice Chairman,
Strategic Development of FBIO.

F-28

Table of Contents

TG Therapeutics, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

In  March  2015,  we  entered  into  the  Collaboration  Agreement  with  Checkpoint,  a  subsidiary  of  FBIO,  for  the  development  and
commercialization of anti-PD-L1 and anti-GITR antibody research programs in the field of hematological malignancies. In May 2016, as part
of a broader agreement with Jubilant, we entered into a sublicense agreement (JBET Agreement) with Checkpoint for the development and
commercialization of Jubilant’s novel BET inhibitor program in the field of hematological malignancies. Mr. Weiss also serves as Chairman
of the Board of Directors of Checkpoint.

Please refer to Note 7 - Leases for details regarding the Office Agreement with FBIO, as well as Note 9 - License Agreements for

details regarding the Collaboration Agreement with Checkpoint.

NOTE 11 – COMMITMENTS AND CONTINGENCIES

As of December 31, 2022, we have known contractual obligations; commitments and contingencies of $91.6 million related to our

short- and long-term liabilities and operating lease obligations.

Payment due by period (in thousands)
Contractual obligations
Operating leases
Long-term debt
    Total

Leases

Total

Less than 
1 year

1-3 years

3-5 years

More than 
5 years

$

$

17,397
74,165
91,562

$

$

2,375
—
2,375

$

4,488
74,165
$ 78,653

$

$

3,993
—
3,993

$

$

6,541
—
6,541

See Note 7 - leases for a detailed description of our lease arrangements in New York, New Jersey and North Carolina. Total rental
expense was approximately $2.7 million, $2.2 million and $2.7 million for the years ended December 31, 2022, 2021, and 2020, respectively.

Future  minimum  lease  commitments  as  of  December  31,  2022,  in  the  aggregate  total  approximately  $17.4  million  through
December  31,  2032.  The  preceding  table  shows  future  minimum  lease  commitments,  which  include  our  office  leases  in  New  York,  New
Jersey, and North Carolina by year as of December 31, 2022.

Loan Payable

See Note 6 – Loan payable for a detail description of our loan agreement.

F-29

    
    
    
    
    
 
   
   
   
   
  
Table of Contents

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report

to be signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Date: March 1, 2023

TG THERAPEUTICS, INC.

By:   /s/ Michael S. Weiss

Michael S. Weiss 
Chairman and Chief Executive Officer

83

Table of Contents

POWER OF ATTORNEY

KNOW  ALL  MEN  BY  THESE  PRESENTS,  that  each  person  whose  signature  appears  below  constitutes  and  appoints  each  of
Michael S. Weiss and Sean A. Power, his true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for
him and his name, place and stead, in any and all capacities, to sign any or all amendments to this annual report on Form 10-K, and to file the
same, with all exhibits thereto and other documents in connection therewith, with the SEC, granting unto said attorney-in-fact and agent, full
power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to
all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent or any of
his substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this Form 10-K has been signed by the following

persons on behalf of the Registrant on March 1, 2023, and in the capacities indicated:

Signatures
/s/ Michael S. Weiss
Michael S. Weiss

/s/ Sean A. Power
Sean A. Power

/s/ Laurence N. Charney
Laurence N. Charney

/s/ Yann Echelard
Yann Echelard

/s/ Kenneth Hoberman
Kenneth Hoberman

/s/ Daniel Hume
Daniel Hume

/s/ Sagar Lonial
Sagar Lonial

Title

Chairman, Chief Executive Officer and President

Chief Financial Officer, Treasurer and Corporate Secretary

Director

Director

Director

Director

Director

84

    
 
 
 
 
 
 
Subsidiaries of TG Therapeutics, Inc.

Exhibit 21.1

Ariston Pharmaceuticals, Inc.

TG Biologics, Inc.

TG Therapeutics AUS Pty Ltd

Consent of Independent Registered Public Accounting Firm

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the registration statement (No. 333-265838) on Form S-8 and registration
statement (No. 333-267262) on Form S-3ASR of our reports dated March 1, 2023, with respect to the consolidated
financial statements of TG Therapeutics, Inc. and the effectiveness of internal control over financial reporting.

Exhibit 23.1

/s/ KPMG LLP

New York, New York
March 1, 2023

Consent of Independent Registered Public Accounting Firm

We  consent  to  the  incorporation  by  reference  in  registration  statement  No.  333-265838  on  Form  S-8  and  registration
statement No. 333-267262 on Form S-3ASR of TG Therapeutics, Inc. of our report dated March 1, 2021 on our audit of the
consolidated  financial  statements  of  TG  Therapeutics,  Inc.  and  Subsidiaries  for  the  year  ended  December  31,  2020,
included in this Annual Report on Form 10-K of TG Therapeutics, Inc. and Subsidiaries for the year ended December 31,
2022.

Exhibit 23.2

/s/ CohnReznick LLP

New York, New York
March 1, 2023

Exhibit 31.1

CERTIFICATION OF PERIODIC REPORT
PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Michael S. Weiss, certify that:

1.

I have reviewed this annual report on Form 10-K of TG Therapeutics, Inc.;

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 registrant as of, and for, the
periods presented in this report;

4. The registrant’s other certifying officer(s) 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 registrant 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 registrant, 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 registrant’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 registrant’s internal control over financial reporting that occurred during
the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that
has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial
reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control
over financial reporting, to the registrant’s auditors and the audit committee of the registrant’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 registrant’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 registrant’s internal control over financial reporting.

Date: March 1, 2023

/s/ Michael S. Weiss
Michael S. Weiss
Chairman, Chief Executive Officer and President

Exhibit 31.2

CERTIFICATION OF PERIODIC REPORT
PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Sean A. Power, certify that:

1.

I have reviewed this annual report on Form 10-K of TG Therapeutics, Inc.;

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 registrant as of, and for, the
periods presented in this report;

4. The registrant’s other certifying officer(s) 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 registrant 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 registrant, 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 registrant’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 registrant’s internal control over financial reporting that occurred during
the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that
has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial
reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control
over financial reporting, to the registrant’s auditors and the audit committee of the registrant’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 registrant’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 registrant’s internal control over financial reporting.

Date: March 1, 2023

/s/ Sean A. Power
Sean A. Power
Chief Financial Officer
Principal Financial and Accounting Officer

Exhibit 32.1

STATEMENT OF CHIEF EXECUTIVE OFFICER OF

TG THERAPEUTICS, INC.

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the annual report of TG Therapeutics, Inc. (the “Company”) on Form 10-K for the year ended
December 31, 2022 as filed with the Securities and Exchange Commission (the “Report”), I, Michael S. Weiss, Chairman,
Chief Executive Officer and President of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906
of the Sarbanes-Oxley Act of 2002, that, based on my knowledge:

1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of

1934, as amended; 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: March 1, 2023

/s/ Michael S. Weiss
Michael S. Weiss
Chairman, Chief Executive Officer and President

Exhibit 32.2

STATEMENT OF CHIEF FINANCIAL OFFICER OF

TG THERAPEUTICS, INC.

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the annual report of TG Therapeutics, Inc. (the “Company”) on Form 10-K for the year ended
December 31, 2022 as filed with the Securities and Exchange Commission (the “Report”), I, Sean A. Power, Chief
Financial Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley
Act of 2002, that, based on my knowledge:

1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of

1934, as amended; 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: March 1, 2023

/s/ Sean A. Power
Sean A. Power
Chief Financial Officer
Principal Financial and Accounting Officer