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XOMA Royalty Corp.

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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, 2019

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 0‑14710

XOMA CORPORATION

(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of incorporation or organization)

2200 Powell Street, Suite 310, Emeryville, California
(Address of principal executive offices)

52‑2154066
(I.R.S. Employer Identification No.)

94608
(Zip Code)

Registrant’s telephone number, including area code: (510) 204‑7200

Securities registered pursuant to Section 12(b) of the Act:
Title of each class
Common Stock

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

Trading Symbol(s)
XOMA

Name of each exchange on which registered
The Nasdaq Global 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 15(d) of the Act. YES ☐ NO ☒

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

Emerging growth company

☐  

☐  

☐

Accelerated filer

Smaller reporting 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 is a shell company (as defined in Rule 12b‑2 of the Exchange Act). YES ☐ NO ☒

The aggregate market value of the voting and non-voting common equity held by non-affiliates of the Registrant, based on the closing price of the shares of common stock on
June 30, 2019, was $93,973,763.

Number of shares of Registrant’s Common Stock outstanding as of March 5, 2020 was 9,761,901

Portions of the Registrant’s Definitive Proxy Statement relating to the Company’s 2020 Annual Meeting of Stockholders are incorporated by reference into Part III

of this Report.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

PART I 

XOMA Corporation
2019 FORM 10‑K ANNUAL REPORT
 TABLE OF CONTENTS

Business

Item 1. 
Item 1A.  Risk Factors
Item 1B.  Unresolved Staff Comments
Item 2. 
Item 3. 
Item 4. 

Properties
Legal Proceedings
Mine Safety Disclosures

PART II 

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
Selected Financial Data
Management’s Discussion and Analysis of Financial Condition and Results of Operations

Item 5. 
Item 6. 
Item 7. 
Item 7A.  Quantitative and Qualitative Disclosures about Market Risk
Financial Statements and Supplementary Data
Item 8. 
Item 9. 
Changes in and Disagreements With Accountants on Accounting and Financial Disclosure
Item 9A.  Controls and Procedures
Item 9B.  Other Information

PART III 

Item 10. 
Item 11. 
Item 12. 
Item 13. 
Item 14. 

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 Accountant Fees and Services

PART IV 

Item 15. 
Item 16. 
SIGNATURES 

Exhibits and Financial Statement Schedules
Form 10‑K Summary

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12
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33
34
34

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36
46
46
47
47
47

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48
48

49
56
57

This  annual  report  on  Form  10‑K  includes  trademarks,  service  marks  and  trade  names  owned  by  us  or  others.  “XOMA,”  the
XOMA  logo  and  all  other  XOMA  product  and  service  names  are  registered  or  unregistered  trademarks  of  XOMA  Corporation  or  a
subsidiary  of  XOMA  Corporation  in  the  United  States  and  in  other  selected  countries. All  trademarks,  service  marks  and  trade  names
included or incorporated by reference in this annual report are the property of their respective owners.

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Table of Contents

PART I 

This Annual Report on Form 10‑K contains forward-looking statements within the meaning of Section 27A of the Securities Act of
1933, as amended, or the Securities Act, Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act, and the
Private  Securities  Litigation  Reform  Act  of  1995,  which  are  subject  to  the  “safe  harbor”  created  by  those  sections.  Forward-looking
statements are based on our management’s beliefs and assumptions and on information currently available to them. In some cases, you can
identify  forward-looking  statements  by  words  such  as  “may,”  “will,”  “should,”  “could,”  “would,”  “expects,”  “plans,”  “anticipates,”
“believes,”  “estimates,”  “projects,”  “predicts,”  “potential,”  “intend”  and  similar  expressions  intended  to  identify  forward-looking
statements. Examples of these statements include, but are not limited to, statements regarding: our future operating expenses, our future
losses, the success of our strategy as a royalty aggregator, extent to which our issued and pending patents may protect our products and
technology,  the  potential  of  our  existing  product  candidates  to  lead  to  the  development  of  commercial  products,  our  ability  to  receive
potential  milestone  or  royalty  payments  under  license  and  collaboration  agreements  and  the  timing  of  receipt  of  those  payments.  These
statements  are  based  on  assumptions  that  may  not  prove  accurate.  Actual  results  could  differ  materially  from  those  anticipated  due  to
certain  risks  inherent  in  the  biotechnology  industry  and  for  our  licensees  engaged  in  the  development  of  new  products  in  a  regulated
market. Among other things: our product candidates subject to our out-license agreements are still being developed, and our licensees’ may
require  substantial  funds  to  continue  development  which  may  not  be  available;  we  may  not  be  successful  in  entering  into  out-license
agreements for our product candidates; if our therapeutic product candidates do not receive regulatory approval, our third-party licensees
will  not  be  able  to  manufacture  and  market  them;  products  or  technologies  of  other  companies  may  render  some  or  all  of  our  product
candidates noncompetitive or obsolete; we do not know whether there will be, or will continue to be, a viable market for the products in
which  we  have  an  ownership  or  royalty  interest;  even  once  approved,  a  product  may  be  subject  to  additional  testing  or  significant
marketing restrictions, its approval may be withdrawn or it may be voluntarily taken off the market; we and our licensees are subject to
various  state  and  federal  healthcare  related  laws  and  regulations  that  may  impact  the  commercialization  of  our  product  candidates  and
could subject us to significant fines and penalties; and certain of our technologies are in-licensed from third parties, so our capabilities
using them are restricted and subject to additional risks. These and other risks, including those related to current economic and financial
market conditions, are contained principally in Item 1, Business; Item 1A, Risk Factors; Item 7, Management’s Discussion and Analysis of
Financial  Condition  and  Results  of  Operations;  and  other  sections  of  this  Annual  Report  on  Form  10‑K.  Factors  that  could  cause  or
contribute to these differences include those discussed in Item 1A, Risk Factors, as well as those discussed elsewhere in this Annual Report
on Form 10‑K.

Forward-looking statements are inherently uncertain and you should not place undue reliance on these statements, which speak
only as of the date that they were made. These cautionary statements should be considered in connection with any written or oral forward-
looking statements that we may issue in the future. We do not undertake any obligation to release publicly any revisions to these forward-
looking statements after completion of the filing of this Annual Report on Form 10‑K to reflect later events or circumstances or to reflect the
occurrence of unanticipated events.

All references to “portfolio” in this Annual Report on Form 10-K are to milestone and/or royalty rights associated with a basket of

drug products in development.

Item 1.   Business 

Overview and Strategy

XOMA Corporation (“XOMA”), a Delaware corporation, is a biotech royalty aggregator. We have a sizable portfolio of economic
rights  to  future  potential  milestone  and  royalty  payments  associated  with  partnered  pre-commercial  therapeutic  candidates.  Our  portfolio
was built through licensing our proprietary products and platforms from our legacy discovery and development business, combined with
acquisitions of rights to future milestones and royalties that we have made since our royalty aggregator business model was implemented in
2017. We expect that most of our future revenue will be based on payments we may receive for milestones and royalties related to these
programs.

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Our  strategy  is  to  expand  our  pipeline  by  acquiring  additional  potential  milestone  and  royalty  revenue  streams  on  drug  product
candidates  from  third  parties.  Expanding  our  pipeline  through  these  acquisitions  can  allow  for  further  diversification  across  therapeutic
areas and development stages. Our ideal target acquisitions are in pre-commercial stages of development, have an expected long duration of
market exclusivity, high revenue potential, and are partnered with a large pharmaceutical or biopharmaceutical enterprise.

Portfolio Highlights

The  following  table  highlights  key  assets  included  in  our  portfolio  of  potential  future  milestone  and  royalty  streams.  This  table

does not include all assets because certain assets are subject to confidentiality agreements.

COMPANY

ASSET NAME

TARGET

ROYALTY RATE

Alligator Bioscience

Aronora

Aronora

AVEO

Bayer

Bayer

JNJ-64457107/ADC-
1013  (mitazalimab)

AB002 (proCase)

AB054

CD40

0.75%

E-WE thrombin

Factor XII

AV-299 (ficlatuzumab)

HGF

BAY1213790 (osocimab)

Factor XIa

BAY1831865

Bayer/Aronora

AB023 (xisomab 3G3)

Compugen

Incyte

Incyte

Incyte

Incyte

Janssen Biotech

Janssen Biotech

Janssen Biotech

Janssen Biotech

Janssen Biotech

COM902

INCAGN1876

INCAGN1949

INCAGN02390

INCAGN2385

JNJ-63723283 (cetrelimab)

JNJ-55920839

JNJ-63709178

JNJ-63898081

JNJ-64232025

Margaux Biologics

rBPI-21 (XOMA 629)

Merck

MK-4830

Monopar Therapeutics MNPR-101

Novartis

Novartis

Novartis

Novartis

CFZ533 (iscalimab)

VPM087 (gevokizumab)

NIS793

NIR178

Factor XI

Factor XI

TIGIT

GITR

OX-40

TIM-3

LAG-3

PD-1

IFN

CD123xCD3

PSMAxCD3

CD154

BPI

ILT-4

uPAR

CD-40

IL-1ß

TGFß

Low single-digit

Low single-digit

Low single-digit

Low single-digit

Low single-digit

Low single-digit

Low single-digit

Mid-single-digit

Mid-single-digit

Low to mid-single-digit

Low to mid-single-digit

0.75%

0.75%

0.75%

0.75%

0.75%

Low to mid-single-digit

Low single-digit

None

Mid-single-digit to low-teens

High single-digit to mid-teens

Mid-single digit to low teens

adenosine A2A

Low single-digit

Ology Bioservices

Palobiofarma

Palobiofarma

NTM-1631, NTM-1632, NTM-
1633, NTM-1634

Botulinum neurotoxins

15%

PBF-680

PBF-677

adenosine A1

adenosine A3

Low single-digit

Low single-digit

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Palobiofarma

PBF-999

Palobiofarma

Palobiofarma

Rezolute

Rezolute

Sesen Bio

Takeda

Takeda/Molecular
Templates

Acquisitions

PBF-1129

PBF-1650

RZ358

RZ402

Vicinium®

TAK-079

TAK-169

adenosine A2A /
Phosphodiesterase 10
(PDE-10)

adenosine A2B

adenosine A3

Low single-digit

Low single-digit

Low single-digit

INSR

Kallikrein

EpCAM

CD-38

CD-38

High single-digit to mid-teens

Low single-digit

2.50%

4%

4%

Royalty Purchase Agreement with Agenus, Inc.

In September 2018, we entered into a Royalty Purchase Agreement (the “Agenus Royalty Purchase Agreement”) with Agenus, Inc.
(“Agenus”). Under the Agenus Royalty Purchase Agreement, we purchased from Agenus the right to receive 33% of the future royalties due
to Agenus from Incyte (net of certain royalties payable by Agenus to a third party) and 10% of all future developmental, regulatory and
sales  milestones  on  sales  of  six  Incyte  immuno-oncology  assets.  In  addition,  we  purchased  from Agenus  the  right  to  receive  33%  of  the
future royalties due to Agenus from Merck and 10% of all future developmental, regulatory and sales milestones on sales of MK-4830, an
immuno-oncology  product  currently  in  clinical  development.  Pursuant  to  the Agenus  Royalty  Purchase Agreement,  our  share  in  future
potential development, regulatory and commercial milestones is up to $59.5 million and the royalties have no limit. Under the terms of the
Agenus Royalty Purchase Agreement, we paid Agenus $15.0 million. We financed $7.5 million of the purchase price with a three-year term
loan under our Loan and Security Agreement with Silicon Valley Bank (“SVB”) dated May 7, 2018.

Royalty Purchase Agreement with Bioasis Technologies, Inc.

In February 2019, we entered into a Royalty Purchase Agreement with Bioasis Technologies, Inc. (the “Bioasis Royalty Agreement”)
and certain affiliates (collectively “Bioasis”). Under the Bioasis Royalty Agreement, we purchased potential future milestone, royalty and
option fee payment rights from Bioasis for product candidates that are being developed pursuant to a License Agreement between Bioasis
and Prothena Biosciences Limited. Under the terms of the Bioasis Royalty Agreement, we paid Bioasis an upfront cash payment of $0.3
million  and  will  be  required  to  make  contingent  future  cash  payments  of  up  to  $0.2  million  to  Bioasis  if  and  when  the  licensed  product
candidates  reach  certain  development  milestones. As  of  December  31,  2019,  none  of  the  development  milestones  had  been  achieved.  In
addition, we were granted an option to purchase a 1% royalty right on the next two license agreements entered into between Bioasis and
third-party  licensees  subject  to  certain  payments  and  conditions  as  well  as  a  right  of  first  negotiation  on  subsequent  Bioasis  license
agreements with third parties.

Royalty Purchase Agreement with Aronora, Inc.

In April 2019, we entered into a Royalty Purchase Agreement with Aronora, Inc. (the “Aronora Royalty Purchase Agreement”), a
private  research  and  development  company  headquartered  in  Portland,  Oregon.  Under  the  Aronora  Royalty  Purchase  Agreement,  we
purchased from Aronora the rights to potential royalties and a portion of upfront, milestone, and option payments associated with five anti-
thrombotic hematology drug products in development: three candidates subject to Aronora’s collaboration with Bayer Pharma AG (“Bayer”)
(the “Bayer Products”) and two additional early stage candidates (the “non-Bayer Products”).

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Under  the  terms  of  the Aronora  Royalty  Purchase Agreement,  we  made  a  $6.0  million  upfront  payment  to Aronora  when  the
transaction closed on June 26, 2019, and in September 2019 we made an additional $3.0 million payment for the three Bayer Products that
were  active  as  of  September  1,  2019.  Pursuant  to  the Aronora  Royalty  Purchase Agreement,  if  we  receive  $250.0  million  in  cumulative
royalties on net sales per product, we will be required to pay associated tiered milestones payments to Aronora in an aggregate amount of up
to $85.0 million per product. The tiered milestones will be paid based on various royalty tiers prior to reaching $250.0 million in cumulative
royalties on net sales per product. We will retain royalties per product in excess of $250.0 million. We will receive, on average, low single-
digit  royalties  on  future  sales  of  the  Bayer  Products  and  10%  of  all  future  developmental,  regulatory  and  sales  milestones  related  to  the
Bayer  Products.  In  addition,  we  purchased  from Aronora  the  right  to  receive  low-single  digit  percentage  of  net  sales  of  the  non-Bayer
Products and 10% of all future payments, including upfront payments, option payments and developmental, regulatory and sales milestone
payments on potential future sales of the non-Bayer Products. We financed $4.5 million of the purchase price with a three-year term loan
under our Loan and Security Agreement with SVB dated May 7, 2018.

Royalty Purchase Agreement with Palobiofarma, S.L.

In September 2019, we entered into a Royalty Purchase Agreement (the “Palo Royalty Purchase Agreement”) with Palobiofarma,
S.L, (“Palo”). Pursuant to the Palo Royalty Purchase Agreement, we acquired the rights to potential royalty payments in low single digit
percentages  of  aggregate  net  sales  associated  with  six  drug  candidates  in  various  clinical  development  stages,  targeting  the  adenosine
pathway  with  potential  applications  in  solid  tumors,  non-Hodgkin’s  lymphoma,  asthma/chronic  obstructive  pulmonary  disease,
inflammatory bowel disease, idiopathic pulmonary fibrosis, lung cancer, psoriasis and nonalcoholic steatohepatitis and other indications (the
“Palo Licensed Products”) that are being developed by Palo. Novartis Pharma AG (“Novartis”) is a development partner on NIR178, one of
the Palo Licensed Products, and NIR178 is being developed pursuant to a license agreement between Palo and Novartis. Under the terms of
the Palo Royalty Purchase Agreement, we paid Palo $10.0 million for the rights to potential royalty payments on future sales of the Palo
Licensed Products.  We financed $5.0 million of the purchase price with a three-year term loan under our Loan and Security Agreement
with SVB dated May 7, 2018.

Selected Programs Underlying Our Core Pipeline

Historically, we have licensed or provided research and development collaboration services to world-class organizations, such as
Novartis and Takeda, in pursuit of new antibody products under which we are eligible to receive potential future milestone payments and
royalties. The following is a summary of material license and collaboration agreements that represent a significant component of our core
pipeline.

Novartis – Anti-CD40 Antibody

In September 2015, we and Novartis Vaccines and Diagnostics, Inc. (“NVDI”), further amended our 2008 Amended and Restated
Research,  Development  and  Commercialization  Agreement,  relating  to  various  antibodies,  including  anti-CD40  antibodies.  Under  this
agreement, NVDI is solely responsible for the development and commercialization of the antibodies and products containing the antibodies
arising from this program. The parties agreed to reduce the royalty rates that we are eligible to receive on sales of NVDI’s clinical stage anti-
CD40  antibodies  (such  as  iscalimab).  These  royalties  are  tiered  based  on  sales  levels  and  now  have  percentage  rates  ranging  from  mid-
single digit to low-teens.

Our right to royalty payments expires on the later of the expiration of any licensed patent covering each product or 10 years from

the first commercial sale of each product in each country. Novartis is conducting clinical testing of iscalimab in several indications.

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Novartis – Gevokizumab

In August 2017, we and Novartis entered into a license agreement (the “XOMA‑052 License Agreement”), under which we granted
Novartis  an  exclusive,  worldwide,  royalty-bearing  license  to  gevokizumab  (“VPM087”)  (an  early  clinical  stage  product  candidate)  and
related know-how and patents. Under the terms of the XOMA‑052 License Agreement, Novartis is solely responsible for the development
and commercialization of VPM087 and products containing such antibody.

Under  the  XOMA‑052  License Agreement,  we  received  total  consideration  of  $30.0  million  in  2017  for  the  license  and  rights
granted  to  Novartis.  Of  the  total  consideration,  $15.7  million  was  paid  in  cash  and  $14.3  million  (equal  to  €12.0  million)  was  paid  by
Novartis Institutes for Biomedical Research, Inc. (“NIBR”), on our behalf, to settle our loan with Les Laboratories Servier (“Servier”). In
addition, NIBR extended the maturity date on our debt to Novartis to September 30, 2022. We also received $5.0 million related to the sale
of 539,131 shares of our common stock, at a price per share of $9.2742. Based on the achievement of pre-specified criteria, we are eligible
to receive up to $438.0 million in development, regulatory and commercial milestones. We are also eligible to receive royalties on sales of
licensed  products,  which  are  tiered  based  on  sales  levels  and  have  percentage  rates  ranging  from  mid-single  digit  to  mid-teens.  This
program is in early clinical testing.

Unless  terminated  earlier,  the  XOMA‑052  License Agreement  will  remain  in  effect,  on  a  country-by-country  and  product-by-
product basis, until Novartis’ royalty obligations end. The XOMA‑052 License Agreement contains customary termination rights relating to
material breach by either party. Novartis also has a unilateral right to terminate the XOMA‑052 License Agreement on a product-by-product
and country-by-country basis or in its entirety with six months’ prior written notice.

Novartis – Anti-TGFβ Antibody

In September 2015, we and Novartis International Pharmaceutical Ltd. (“Novartis International”) entered into a license agreement
(the “Anti-TGFβ Antibody License Agreement”) under which we granted Novartis International an exclusive, worldwide, royalty-bearing
license  to  our  anti-TGFβ  antibody  program  (“NIS793”).  Novartis  International  is  solely  responsible  for  the  development  and
commercialization of the antibodies and products containing the antibodies arising from this program.

Under the Anti-TGFβ Antibody License Agreement, we received a $37.0 million upfront fee, and are eligible to receive up to a
total of $480.0 million in development, regulatory and commercial milestones. We also are eligible to receive royalties on sales of licensed
products,  which  are  tiered  based  on  sales  levels  and  have  percentage  rates  ranging  from  mid-single  digit  to  low-teens.  This  program  is
currently in early clinical testing.

Takeda

In  November  2006,  we  entered  into  a  collaboration  agreement  with  Takeda  under  which  we  agreed  to  discover  and  optimize

therapeutic antibodies against multiple targets selected by Takeda.

Under  the  terms  of  this  agreement,  we  may  receive  additional  milestone  payments  aggregating  up  to  $19.0  million  relating  to
TAK-079 and low single-digit royalties on future sales of all products subject to this license. Our right to milestone payments expires on the
later of the receipt of payment from Takeda of the last amount to be paid under the agreement or the cessation by Takeda of all research and
development activities with respect to all program antibodies, collaboration targets or collaboration products. Our right to royalties expires
on the later of 13.5 years from the first commercial sale of each royalty-bearing discovery product or the expiration of the last-to-expire
licensed patent.

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In  February  2009,  we  expanded  our  existing  collaboration  to  provide  Takeda  with  access  to  multiple  antibody  technologies,
including  a  suite  of  research  and  development  technologies  and  integrated  information  and  data  management  systems.  We  may  receive
milestones  of  up  to  $3.3  million  per  discovery  product  candidate  and  low  single-digit  royalties  on  future  sales  of  all  antibody  products
subject to this license. Our right to milestone payments expires on the later of the receipt of payment from Takeda of the last amount to be
paid  under  the  agreement  or  the  cessation  by  Takeda  of  all  research  and  development  activities  with  respect  to  all  program  antibodies,
collaboration targets or collaboration products. Our right to royalties expires on the later of 10 years from the first commercial sale of such
royalty-bearing discovery product or the expiration of the last-to-expire licensed patent.

Rezolute

In  December  2017,  we  entered  into  a  license  agreement  with  Rezolute,  Inc.  (formerly AntriaBio,  Inc.)  (“Rezolute”)  pursuant  to
which we granted an exclusive global license to Rezolute to develop and commercialize X358 (now RZ358), a Phase 2 product candidate,
for all indications. We and Rezolute also entered into a common stock purchase agreement.

Under  the  terms  of  the  license  agreement,  Rezolute  is  responsible  for  all  development,  regulatory,  manufacturing  and
commercialization  activities  associated  with  RZ358  and  is  required  to  make  certain  clinical,  regulatory  and  annual  net  sales  milestone
payments to us of up to $232.0 million in the aggregate based on the achievement of pre-specified criteria. Rezolute is also obligated to pay
us  royalties  ranging  from  the  high  single  digits  to  the  mid-teens  based  upon  annual  net  sales  of  RZ358.  Rezolute  is  obligated  to  take
customary  steps  to  advance  RZ358,  and  to  meet  certain  spending  requirements  on  an  annual  basis  for  the  program  until  a  marketing
approval application for RZ358 is accepted by the FDA. Rezolute’s obligation to pay royalties with respect to a particular RZ358 product
and  country  will  continue  for  the  longer  of  the  date  of  expiration  of  the  last  valid  patent  claim  covering  the  product  in  that  country,  or
twelve years from the date of the first commercial sale of the product in that country.

Under the terms of the license agreement, Rezolute is required to pay us a low single-digit royalty on sales of Rezolute’s other
products from its existing programs, currently in preclinical and early clinical stages. Rezolute’s obligation to pay royalties with respect to a
particular Rezolute product and country will continue for the longer of twelve years from the date of the first commercial sale of the product
in that country or for so long as Rezolute or its licensee is selling such product in such country, provided that such royalty will terminate
upon the termination of the licensee’s obligation to make payments to Rezolute based on sales of such product in such country.

We also granted Rezolute an option through June 1, 2019 for an exclusive license for their choice of one of our preclinical insulin
receptor  monoclonal  antibody  fragments,  including  X129.  On  June  1,  2019,  such  option  expired  unexercised.  The  license  agreement
contains customary termination rights relating to material breach by either party. Rezolute also has a unilateral right to terminate the license
agreement in its entirety on ninety-days’ notice at any time.

Rezolute License Agreement - First Amendment

In  March  2018,  we  and  Rezolute  amended  the  license  agreement  and  common  stock  purchase  agreement.  Pursuant  to  the  as-
amended terms of the license agreement and common stock purchase agreement, Rezolute was required to pay us $6.0 million in cash, to
issue us $8.5 million worth of its common stock, and to issue us 7,000,000 shares of its common stock, contingent on the completion of its
financing  activities.  Further,  in  the  event  that  Rezolute  did  not  complete  a  financing  that  raised  at  least  $20.0  million  in  aggregate  gross
proceeds  (“Qualified  Financing”)  by  March  31,  2019  (the  “2019  Closing”),  it  would  issue  to  us  an  additional  number  of  shares  of  its
common  stock  equal  to  $8.5  million  divided  by  the  weighted  average  of  the  closing  bid  and  ask  prices  or  the  average  closing  prices  of
Rezolute’s common stock on the ten-day trading period prior to March 31, 2019. Finally, if Rezolute was unable to complete a Qualified
Financing by March 31, 2020, it was obliged to pay us $15.0 million in order to maintain the license. Under the common stock purchase
agreement,  Rezolute  granted  us  the  right  and  option  to  sell  the  greater  of  (i)  5,000,000  shares  of  common  stock  or  (ii)  one  third  of  the
aggregate shares held by us upon failure by Rezolute to list its shares of its common stock on the Nasdaq Stock Market or a similar national
exchange on or prior to December 31, 2019.

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During  the  year  ended  December  31,  2018,  Rezolute  closed  a  debt  financing  activity  for  gross  proceeds  of  $4.0  million,  which
triggered  the  Initial  Closing,  and  completed  an  Interim  Financing  Closing,  as  defined  in  the  common  stock  purchase  agreement.  These
financing activities resulted in receipt of 8,093,010 shares of Rezolute’s common stock and cash of $0.5 million. Under the amended license
agreement, we were also entitled to receive $0.3 million of reimbursable technology transfer expenses from Rezolute.

Rezolute License Agreement - Second Amendment

In  January  2019,  we  and  Rezolute  further  amended  the  license  agreement  and  common  stock  purchase  agreement.  The  license
agreement was amended to eliminate the requirement that equity securities be issued to us upon the closing of the Qualified Financing and
to replace it with a requirement that Rezolute: (1) make five cash payments to us totaling $8.5 million following the closing of a Qualified
Financing on or before specified staggered future dates through September 2020 (the “Future Cash Payments”); and (2) provide for early
payment of the Future Cash Payments (only until the above referenced $8.5 million is reached) by making cash payments to us equal to 15%
of the net proceeds of each future financing following the closing of the Qualified Financing, with such payments to be credited against any
remaining  unpaid  Future  Cash  Payments  in  reverse  order  of  their  scheduled  payment  date.  In  accordance  with  the  terms  of  the  license
agreement, we received an additional $5.5 million in cash upon the closing of the Qualified Financing in February 2019. In July and August
2019,  Rezolute  received  additional  cash  through  two  common  stock  financing  events,  resulting  in  early  payment  of  $3.4  million  of
unrecognized  Future  Cash  Payments.  In  addition,  we  received  the  $1.5  million  and  $1.0  million  payments  due  in  September  2019  and
December 2019, respectively, resulting in a total of $11.4 million in cash received from Rezolute for Qualified Financing and Future Cash
Payments in the year ended December 31, 2019. As of December 31, 2019, we had an outstanding receivable of $2.6 million representing
the current estimate of the Future Cash Payments expected to be received from Rezolute. During the year ended December 31, 2019, we
recognized $14.0 million as revenue from Rezolute.

The license agreement amendment also revised the amount Rezolute is required to expend on development of RZ358 and related
licensed  products  and  revised  provisions  with  respect  to  Rezolute’s  diligence  efforts  in  conducting  clinical  studies.  Lastly,  the  common
stock  purchase  agreement  was  amended  to  remove  certain  provisions  related  to  the  issuance  of  equity  to  us  in  accordance  with  the  new
provisions regarding the Future Cash Payments in the license agreement. Specifically, the common stock purchase agreement was amended
to provide XOMA the right to sell up to 5,000,000 shares of Rezolute common stock currently held by us, back to Rezolute if it fails to list
its shares of common stock on the Nasdaq Stock Market or a similar national exchange on or prior to December 31, 2019. Only 2,500,000
shares may be sold back to Rezolute during calendar year 2020. Any such shares may be sold back to Rezolute at the average of the closing
bid and asked prices of its common stock quoted on its principal trading market on the date of such put option exercise. As of December 31,
2019, Rezolute failed to list its shares of common stock on the Nasdaq Stock Market or a similar exchange.

Ology Bioservices

On November 4, 2015, we entered into an asset purchase agreement with Ology Bioservices, Inc. (“Ology Bioservices”) (formerly
Nanotherapeutics Inc.) (the “Ology Bioservices Purchase Agreement”), under which Ology Bioservices agreed to acquire our  biodefense
business and related assets. Under the terms of this agreement, we are eligible to receive a 15% royalty on net sales of any future Ology
Bioservices products covered by or involving the related patents or know-how. During the year ended December 31, 2018, we received $2.5
million owed to us under the agreement with Ology Bioservices which was recognized as other income in our consolidated statement of
operations and comprehensive loss. The scheduled payment concluded in 2018, but we are still eligible to receive royalties in the future.

Proprietary Product Candidates

We have a pipeline of unique monoclonal antibodies and technologies available to license to pharmaceutical and biotechnology

companies to further their clinical development. A summary of these product candidates is provided below:

·

IL‑2  program. Interleukin  2  has  long  been  recognized  as  an  effective  therapy  for  metastatic  melanoma  and  renal  cell
carcinoma, but it has serious dose-limiting toxicities that prevent broad clinical use. We have

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generated antibodies that, when given with IL‑2, are intended to steer IL‑2 to enhance its positive impact with less toxicity,
potentially improving the therapeutic index over standard IL‑2 therapy.

·

·

·

PTH1R  program. We  have  generated   an  anti-parathyroid  receptor  pipeline  that  includes  several  functional  antibody
antagonists  targeting  PTH1R,  a  G-protein-coupled  receptor  involved  in  the  regulation  of  calcium  metabolism.  These
antibodies have shown promising efficacy in in vivo studies and could potentially address unmet medical needs, including
primary  hyperparathyroidism  and  humoral  hypercalcemia  of  malignancy  (“HHM”).  HHM  is  present  in  many  advanced
cancers and is caused by high serum calcium due to increased levels of the PTH1R ligand PTH-related peptide (“PTHrP”).
Current HHM treatments often fall short and many cancer patients die from ‘metabolic death’. Our PTH1R antibodies could
be beneficial for the treatment of HHM.

XMetA  is  an  insulin  receptor-activating  antibody  designed  to  provide  long-acting  reduction  of  hyperglycemia  in  Type  2
diabetic  patients,  potentially  reducing  the  advancement  to  a  number  of  insulin  injections  needed  to  control  their  blood
glucose levels.

X213 (formerly LFA 102) is an allosteric inhibitor of prolactin action. It is a humanized IgG1‑Kappa monoclonal antibody
that binds to the extracellular domain of the human prolactin receptor with high affinity at an allosteric site. The antibody has
been shown to inhibit prolactin-mediated signaling, and it is potent and similarly active against several animal and human
prolactin receptors.

Technologies Available for Non-Exclusive License

We have a set of antibody discovery, optimization and development technologies available for licensing, including:

·

ADAPT™ (Antibody Discovery Advanced Platform Technologies):  proprietary human antibody phage display libraries,
integrated  with  yeast  and  mammalian  display,  which  can  be  integrated  into  antibody  discovery  programs  through  license
agreements. We believe access to ADAPT™ Integrated Display offers a number of benefits because it enables the diversity
of  phage  libraries  to  be  combined  with  accelerated  discovery  due  to  rapid  immunoglobulin  (“IgG”)  reformatting  and
fluorescence-activated  cell  sorting  based  screening  using  yeast  and  mammalian  display.  This  increases  the  probability  of
success in finding rare and unique functional antibodies directed to targets of interest.

· ModulX™:  technology  which  allows  modulation  of  biological  pathways  using  monoclonal  antibodies  and  offers  insights
into  regulation  of  signaling  pathways,  homeostatic  control,  and  disease  biology.  Using  ModulX™,  we  have  generated
product  candidates  with  novel  mechanisms  of  action  that  specifically  alter  the  kinetics  of  interaction  between  molecular
constituents  (e.g.  receptor-ligand).  ModulX™  technology  enables  expanded  target  and  therapeutic  options  and  offers  a
unique approach in the treatment of disease.

· OptimX™ technologies:

· Human  Engineering™  (“HE™”):  a  proprietary  humanization  technology  that  allows  modification  of  non-human
monoclonal antibodies to reduce or eliminate detectable immunogenicity and make them suitable for medical purposes in
humans. The technology uses a unique method developed by us, based on analysis of the conserved structure-function
relationships among antibodies. The method defines which residues in a non-human variable region are candidates to be
modified. The result is an HE™ antibody with preserved antigen binding, structure and function that has eliminated or
greatly  reduced  immunogenicity.  HE™  technology  was  used  in  development  of  gevokizumab  (VPM087)  and  certain
other antibody products.

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·

Targeted  Affinity  Enhancement™  (“TAE™”):   a  proprietary  technology  involving  the  assessment  and  guided
substitution of amino acids in antibody variable regions, enabling efficient optimization of antibody binding affinity and
selectivity.  TAE™  generates  a  comprehensive  map  of  the  effects  of  amino  acid  mutations  in  the  complementarity-
determining region likely to impact binding. The technology has been licensed to a number of companies.

Sale of Future Revenue Streams

On December 21, 2016, we entered into two Royalty Interest Acquisition Agreements (together, the “Royalty Sale Agreements”)
with  HealthCare  Royalty  Partners  II,  L.P.  (“HCRP”).  Under  the  first  Royalty  Sale Agreement,  we  sold  our  right  to  receive  milestone
payments and royalties on future sales of products subject to a license agreement, dated August 18, 2005, between XOMA and Pfizer, Inc.
(“Pfizer”)  (formerly  Wyeth)  for  an  upfront  cash  payment  of  $6.5  million,  plus  potential  additional  payments  totaling  $4.0  million  in  the
event three specified net sales milestones were met by Pfizer in 2017, 2018 and 2019. None of the sales milestones were achieved. Under the
second  Royalty  Sale Agreement  entered  into  in  December  2016,  we  sold  our  right  to  receive  royalties  under  an Amended  and  Restated
License Agreement dated October 27, 2006 between XOMA and Shire Plc. (formerly Dyax, Corp.) for a cash payment of $11.5 million.

Debt Agreements

Novartis

In connection with the collaboration between XOMA and Novartis AG (then Chiron Corporation), a secured note agreement was
executed in May 2005. The note agreement is secured by our interest in the collaboration and was due and payable in full on June 21, 2015.
In  June  2015,  we  and  NVDI,  who  assumed  the  note  agreement,  agreed  to  extend  the  maturity  date  of  our  secured  note  agreement  from
June 21, 2015 to September 30, 2015, which was then subsequently extended to September 30, 2020. In September 2017, in connection with
the XOMA‑052 License Agreement with Novartis, we and NIBR, who assumed the note agreement from NVDI, executed an amendment to
the note agreement under which we further extended the maturity date of the note to September 30, 2022. As of December 31, 2019, the
outstanding principal balance under this note agreement totaled $15.9 million.

Silicon Valley Bank Loan Agreement

In May 2018, we executed a Loan and Security Agreement (the “Loan Agreement”) with SVB. Under the Loan Agreement, upon
our request, SVB may make advances available to us of up to $20.0 million. We may borrow advances under the Term Loan from May 7,
2018 (the “Effective Date”) until the earlier of March 31, 2019 or an event of default.

In  connection  with  the  Loan Agreement,  we  issued  a  warrant  to  SVB,  which  is  exercisable  in  whole  or  in  part  for  up  to  an
aggregate of 6,332 shares of common stock with an exercise price of $23.69 per share (the “Warrant”). The Warrant may be exercised on a
cashless basis and is exercisable within 10 years from the date of issuance or upon the consummation of certain acquisitions of XOMA.

In March 2019, we and SVB amended the Loan Agreement to extend the draw period from March 31, 2019 to March 31, 2020. In
connection with the amendment, we issued a second warrant to SVB, which is exercisable in whole or in part for up to an aggregate of 4,845
shares of common stock with an exercise price of $14.71 per share. As of December 31, 2019, both warrants are outstanding. In addition,
both warrants may be exercised on a cashless basis and are exercisable within 10 years from the date of issuance or upon the consummation
of certain acquisitions of XOMA.

In  September  2018,  we  borrowed  $7.5  million  under  the  Loan  Agreement  in  connection  with  the  Agenus  royalty  purchase
agreement. In June and September 2019, we borrowed advances of $3.0 million and $1.5 million for the upfront payment and the contingent
consideration under the Aronora royalty purchase agreement, respectively. In September 2019, we borrowed an additional $5.0 million in
connection with the Palo Royalty Purchase Agreement. As of December 31, 2019, the outstanding principal balance of the debt under the
Loan Agreement was $16.1 million.

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Competition

The  biotechnology  and  pharmaceutical  industries  are  subject  to  continuous  and  substantial  technological  change.  Some  of  the
drugs  our  licensees  or  royalty  partners  are  developing  may  compete  with  existing  therapies  or  other  drugs  in  development  by  other
companies. Furthermore, academic institutions, government agencies and other public and private organizations conducting research may
seek patent protection with respect to potentially competing products or technologies and may establish collaborative arrangements with our
competitors. There can be no assurance that developments by others will not render our, or our licensees’, products or technologies obsolete
or uncompetitive.

Additionally,  our  recently-undertaken  royalty  aggregator  model  faces  competition  on  at  least  two  fronts.  First,  there  are  other
companies,  funds  and  other  investment  vehicles  seeking  to  aggregate  royalties  or  provide  alternative  financing  to  development-stage
biotechnology  and  pharmaceutical  companies.  The  competitive  companies,  funds  and  other  investment  vehicles  may  have  a  lower  target
rate  of  return,  a  lower  cost  of  capital  or  access  to  greater  amounts  of  capital  and  thereby  may  be  able  to  acquire  assets  that  we  are  also
targeting  for  acquisitions.  Second,  existing  or  potential  competitors  to  our  partners’  and  licensees’  products,  particularly  large
pharmaceutical companies, may have greater financial, technical and human resources than our licensees. Accordingly, these competitors
may  be  better  equipped  to  develop,  manufacture  and  market  products.  Many  of  these  companies  also  have  extensive  experience  in
preclinical  testing  and  human  clinical  trials,  obtaining  FDA  and  other  regulatory  approvals  and  manufacturing  and  marketing
pharmaceutical products.

For a discussion of the risks associated with competition, see below under “Item 1A. Risk Factors.”

Government Regulation

The  research  and  development,  manufacturing  and  marketing  of  pharmaceutical  products  are  subject  to  regulation  by  numerous
governmental  authorities  in  the  United  States  and  other  countries.  We  and  our  partners  and  licensees,  depending  on  specific  activities
performed, are subject to these regulations. In the United States, pharmaceuticals are subject to regulation by both federal and various state
authorities,  including  the  FDA.  The  Federal  Food,  Drug  and  Cosmetic  Act  and  the  Public  Health  Service  Act  govern  the  testing,
manufacture, safety, efficacy, labeling, storage, record keeping, approval, advertising and promotion of pharmaceutical products and there
are  often  comparable  regulations  that  apply  at  the  state  level.  There  are  similar  regulations  in  other  countries  as  well.  For  both  currently
marketed and products in development, failure to comply with applicable regulatory requirements can, among other things, result in delays,
the suspension of regulatory approvals, as well as possible civil and criminal sanctions. In addition, changes in existing regulations could
have a material adverse effect on us or our partners.

For a discussion of the risks associated with government regulations, see below under “Item 1A. Risk Factors.”

Intellectual Property

Intellectual property is important to our business and our future income streams will depend in part on our ability to obtain issued
patents,  and  our  partners’  and  licensees’  ability  to  operate  without  infringing  on  the  proprietary  rights  of  others.  We  hold  and  have  filed
applications for a number of patents in the United States and internationally to protect our products and technology. We also have obtained
or have the right to obtain licenses to, or income streams based on,  certain  patents  and  applications  filed  by  others.  However,  the  patent
position  of  biotechnology  companies  generally  is  highly  uncertain  and  consistent  policy  regarding  the  breadth  of  allowed  claims  has  not
emerged from the actions of the U.S. Patent and Trademark Office with respect to biotechnology patents. Accordingly, no assurance can be
given that our, or our partners’ or licensees’ patents will afford protection against competitors with similar products or others will not obtain
patents claiming aspects similar to those covered by our, or our partners’ or licensees’ patent applications. Below is a list of representative
patents and patent applications related to our licensed programs:

10

Representative
Patents/Applications

Subject matter

Expected last
expiry in family

Table of Contents

Licensee

Novartis

Program

Anti-IL‑1b

Novartis

Anti-TGFb

Rezolute

Anti-INSR

Ology Bioservices

Anti-BoNT

Various

Phage display
libraries

US 7,531,166
US 7,582,742
EP 1 899 378

US 7,695,718
US 8,101,166
US 8,586,036
US 9,163,082

US 8,637,029

JP 5763625
US 20180155420

US 8,569,464
US 9,145,458
US 9,714,285
EP 2714735A1
JP 6363948

US 10,167,334
EP 3277716A1

US 9,944,698
EP 2 480 254
JP 5849050

WO2016/141111

US 8,821,879
EP 2 473 191

US 8,546,307
EP 2 344 686
US 7,094,579
EP 2 060 628

Gevokizumab and other antibodies and
antibody fragments with similar binding
properties for IL‑1β

Methods of treating Type 2 diabetes or
Type 2 diabetes-induced diseases or
conditions with high affinity antibodies
and antibody fragments that bind to IL‑1β

Methods of treating gout with certain
doses of IL‑1β binding antibodies or
binding fragments

Pharmaceutical compositions comprising
anti-IL‑1β binding antibodies or
fragments for reducing acute coronary
syndrome in a subject with a history of
myocardial infarction.

2027

2027

2028

2030

TGFβ antibodies and methods of use
thereof

2032

Combination therapy using an inhibitor of
TGFb and an inhibitor of PD‑1 for
treating or preventing recurrence of
cancer
Insulin receptor-modulating antibodies
having the functional properties of RZ358

Methods of treating or preventing post-
prandial hypoglycemia after gastric
bypass surgery using a negative
modulator antibody to the insulin receptor

Coformulations of anti- botulinum
neurotoxin antibodies

2036

2030

2036

2030

XOMA phage display library components

2032

Seeking out license

Anti-PTH1R

US 10,519,250

Seeking out license

Anti-IL2

WO2018/064255*

Seeking out license

Anti-PRLR

US 7,867,493
EP 2 059 535

Parathyroid Hormone Receptor 1
Antibodies and Uses Thereof

Interleukin‑2 Antibodies and Uses
Thereof

Prolactin receptor antibodies

11

2022

2037

2037

2027

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

* Jointly-owned with Medical University of South Carolina Foundation for Research Development

If certain patents issued to others are upheld or if certain patent applications filed by others are issued and upheld, our partners and
licensees may require certain licenses from others to develop and commercialize certain potential products incorporating our technology.
There can be no assurance that such licenses, if required, will be available on acceptable terms.

We protect our proprietary information, in part, by confidentiality agreements with our employees, consultants and partners. These
parties may breach these agreements, and we may not have adequate remedies for any breach. To the extent that we or our consultants or
partners use intellectual property owned by others, we may have disputes with our consultants or partners or other third parties, as to the
rights in related or resulting know-how and inventions.

Concentration of Risk

Our  business  model  is  dependent  on  third  parties  achieving  specified  development  milestones  and  product  sales.  Our  pipeline
currently includes over 65 fully-funded programs from which we could potentially receive royalties if the programs achieve marketability.
Novartis is developing several of the programs in our pipeline. While we do not expect the discontinuation of any one program would have a
material impact on our business, the discontinuation of all programs by Novartis could have a material effect on our business and financial
condition.

Organization

We were incorporated in Delaware in 1981 and became a Bermuda-exempted company in December 1998. Effective December 31,
2011,  we  changed  our  jurisdiction  of  incorporation  from  Bermuda  to  Delaware  and  changed  our  name  from  XOMA  Ltd.  to  XOMA
Corporation. When referring to a time or period before December 31, 1998 or after December 31, 2011, the terms “Company” and “XOMA”
refer to XOMA Corporation, a Delaware corporation; when referring to a time or period between December 31, 1998 and December 31,
2011, such terms refer to XOMA Ltd., a Bermuda company.

Our  principal  executive  offices  are  located  at  2200  Powell  Street,  Suite  310,  Emeryville,  California  94608,  and  we  maintain  a
registered  office  located  at  Corporation  Trust  Center,  1209  Orange  Street,  Wilmington,  Delaware  19801.  Our  telephone  number  at  our
principal executive offices is (510) 204‑7200. Our website address is www.xoma.com. The information found on our website is not part of
this or any other report filed with or furnished to the Securities and Exchange Commission (“SEC”).

Employees

As of March 5, 2020, we employed 10 full-time employees. None of our employees are unionized. Our employees are primarily

engaged in executive, business development, legal, finance and administrative positions.

Item 1A.       Risk Factors 

The  following  risk  factors  and  other  information  included  in  this  annual  report  should  be  carefully  considered.  The  risks  and
uncertainties described below are not the only ones we face. Additional risks and uncertainties not presently known to us also may impair
our  business  operations.  If  any  of  the  following  risks  occur,  our  business,  financial  condition,  operating  results  and  cash  flows  could  be
materially adversely affected.

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Risks Related to our Royalty Aggregator Strategy

Our acquisitions of potential future royalty and/or milestone payments may not produce anticipated revenues and/or may be negatively
affected by a default or bankruptcy of the licensor(s) or licensee(s) under the applicable license agreement(s) covering such potential
royalties  and/or  milestones,  and  if  such  transactions  are  secured  by  collateral,  we  may  be,  or  may  become,  under-secured  by  the
collateral  or  such  collateral  may  lose  value  and  we  will  not  be  able  to  recuperate  our  capital  expenditures  associated  with  the
acquisition.

We are engaged in a continual review of opportunities to acquire future royalties, milestones and other payments related to drug
development and sales as part of our royalty aggregator strategy or to acquire companies that hold royalty assets. Generally, at any time, we
seek  to  have  acquisition  opportunities  in  various  stages  of  active  review,  including,  for  example,  our  engagement  of  consultants  and
advisors to analyze particular opportunities, technical, financial and other confidential information, submission of indications of interest and
involvement as a bidder in competitive auctions. Many potential acquisition targets do not meet our criteria, and for those that do, we may
face  significant  competition  for  these  acquisitions  from  other  royalty  buyers  and  enterprises.  Competition  for  future  asset  acquisition
opportunities in our markets could increase the price we pay for such assets and could reduce the number of potential acquisition targets.
The success of our acquisitions is based on our ability to make accurate assumptions regarding the valuation, timing and amount of potential
future royalty and milestone payments as well as the viability of the underlying technology and intellectual property. The failure of any of
these acquisitions to produce anticipated revenues may materially and adversely affect our financial condition and results of operations.

Some  of  these  acquisitions  may  expose  us  to  credit  risk  in  the  event  of  a  default  by  or  bankruptcy  of  the  licensor(s)  or
licensee(s) that are parties to the applicable license agreement(s) covering the potential milestone and royalty streams being acquired. While
we generally try to structure our receipt of potential milestone and royalty payments to minimize the risk associated with such a default or
bankruptcy, there can be no assurance that any such default or bankruptcy will not adversely affect our ability to receive future potential
royalty  and/or  milestone  payments.  To  mitigate  this  risk,  on  occasion,  we  may  obtain  a  security  interest  as  collateral  in  such  royalty,
milestone and other payments. Our credit risk in respect of such counterparty may be exacerbated when the collateral held by us cannot be
realized upon or is liquidated at prices not sufficient to recover the full amount we are due pursuant to the terms of the particular assets. This
could occur in circumstances where the original collateral was not sufficient to cover a complete loss (e.g., our interests were only partially
secured)  or  may  result  from  the  deterioration  in  value  of  the  collateral,  so  that,  in  either  such  case,  we  are  unable  to  recuperate  our  full
capital outlay. Any such losses resulting therefrom could materially and adversely affect our financial condition and results of operations.

Many of our potential royalty acquisitions may be associated with drug products that are in clinical development and have not yet been
commercialized. To the extent that such products are not successfully developed and commercialized, our financial condition and results
of operations may be negatively impacted.

As part of our royalty aggregator strategy, we will purchase future milestone and royalty streams associated with drug products
which are in clinical development and have not yet been commercialized. To the extent that any such drug products are not successfully
developed and subsequently commercialized, the value of our acquired potential milestone and royalty streams will be negatively affected.
The ultimate success of our royalty aggregator strategy will depend on our ability to properly identify and acquire high quality products and
the  ability  of  the  applicable  counterparty  to  innovate,  develop  and  commercialize  their  products,  in  increasingly  competitive  and  highly
regulated markets. Their inability to do so would negatively affect our ability to receive royalty and/or milestone payments. In addition, we
are  dependent,  to  a  large  extent,  on  third  parties  to  enforce  certain  rights  for  our  benefit,  such  as  protection  of  a  patent  estate,  adequate
reporting  and  other  protections,  and  their  failure  to  do  so  would  presumably  negatively  impact  our  financial  condition  and  results  of
operations.

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We depend on our licensees and royalty-agreement counterparties for the determination of royalty and milestone payments. While we
typically have primary or back-up rights to audit our licensees and royalty-agreement counterparties, the independent auditors may have
difficulty  determining  the  correct  royalty  calculation,  we  may  not  be  able  to  detect  errors  and  payment  calculations  may  call  for
retroactive adjustments. We may have to exercise legal remedies, if available, to resolve any disputes resulting from the audit.

The royalty and milestone payments we may receive are dependent on our licensees’ achievement of regulatory and developmental
milestones  and  product  sales.  Each  licensee’s  calculation  of  the  royalty  payments  is  subject  to  and  dependent  upon  the  adequacy  and
accuracy  of  its  sales  and  accounting  functions,  and  errors  may  occur  from  time  to  time  in  the  calculations  made  by  a  licensee  and/or  a
licensee  may  fail  to  report  the  achievement  of  royalties  or  milestones  in  whole  or  in  part.  Our  license  and  royalty  agreements  typically
provide us the primary or back-up right to audit the calculations and sales data for the associated royalty payments; however, such audits
may occur many months following our recognition of the royalty revenue, may require us to adjust our royalty revenues in later periods and
may require expense on the part of the Company. Further, our licensees and royalty-agreement counterparties may be uncooperative or have
insufficient records, which may complicate and delay the audit process.

Although  we  intend  to  regularly  exercise  our  royalty  audit  rights  as  necessary  and  to  the  extent  available,  we  rely  in  the  first
instance  on  our  licensees  and  royalty-agreement  counterparties  to  accurately  report  the  achievement  of  milestones  and  royalty  sales  and
calculate and pay applicable milestones and royalties and, upon exercise of such royalty and other audit rights, we rely on licensees’ and
royalty-agreement  counterparties’  cooperation  in  performing  such  audits.  In  the  absence  of  such  cooperation,  we  may  be  forced  to  incur
expenses to exercise legal remedies, if available, to enforce our agreements.

The lack of liquidity of our acquisitions of future potential milestones and royalties may adversely affect our business and, if we need to
sell any of our acquired assets, we may not be able to do so at a favorable price, if at all. As a result, we may suffer losses.

We  generally  acquire  milestone  and  royalty  rights  that  have  limited  secondary  resale  markets  and  may  be  subject  to  transfer
restrictions.  The  illiquidity  of  most  of  our  milestone  and  royalty  receivable  assets  may  make  it  difficult  for  us  to  dispose  of  them  at  a
favorable price if at all and, as a result, we may suffer losses if we are required to dispose of any or all such assets in a forced liquidation or
otherwise. In addition, if we liquidate all or a portion of our potential future milestone and/or purchased royalty stream interests quickly or
relating to a forced liquidation, we may realize significantly less than the value at which we had previously recorded these interests.

Our  royalty  aggregator  strategy  may  require  that  we  register  with  the  SEC  as  an  “investment  company”  in  accordance  with  the
Investment Company Act of 1940.

The  rules  and  interpretations  of  the  SEC  and  the  courts,  relating  to  the  definition  of  "investment  company"  are  very  complex.
While we currently intend to conduct our operations so that we will not be an investment company under applicable SEC interpretations, we
can provide no assurance that the SEC would not take the position that the Company would be required to register under the Investment
Company Act of 1940 (the “‘40 Act”) and comply with the ‘40 Act’s registration and reporting requirements, capital structure requirements,
affiliate  transaction  restrictions,  conflict  of  interest  rules,  requirements  for  disinterested  directors,  and  other  substantive  provisions.  We
monitor our assets and income for compliance under the ‘40 Act and seek to conduct our business activities to ensure that we do not fall
within  its  definitions  of  “investment  company”  or  qualify  under  one  of  the  exemptions  or  exclusions  provided  by  the  ‘40  Act  and
corresponding  SEC  regulations.  If  we  were  to  become  an  “investment  company”  and  be  subject  to  the  restrictions  of  the  ‘40 Act,  those
restrictions would likely require significant changes in the way we do business and add significant administrative burdens to our operations.
To ensure that we do not fall within the ‘40 Act, we may need to take various actions which we might otherwise not pursue. These actions
may include restructuring the Company and/or modifying our mixture of assets and income or a liquidation of certain of our assets.

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Our licensees or royalty-agreement counterparties could be subject to natural disasters, public health crises, political crises and other
catastrophic events that could hinder or disrupt development efforts.

We depend on our licensees and royalty-agreement counterparties to successfully develop and commercialize product candidates
for  which  we  may  receive  milestone  and  royalty  payments  in  the  future.    Our  licensees  and  royalty-agreement  counterparties  operate
research and development efforts in various locations in the United States and internationally.  If any of their facilities is affected by natural
disasters,  such  as  earthquakes,  tsunamis,  power  shortages  or  outages,  floods  or  monsoons,  public  health  crises,  such  as  pandemics  and
epidemics, political crises, such as terrorism, war, political instability or other conflict, or other events outside of their control, their research
and  development  efforts  could  be  disrupted,  which  could  result  in  the  discontinuation  of  development  of  one  or  more  of  the  product
candidates in which we have rights to future milestone and/or royalty payments which could have a material adverse effect on our business
operations and prospects.

Risks Related to our Financial Results and Capital Requirements

We have sustained losses in the past, and we expect to sustain losses in the foreseeable future.

We have incurred significant operating losses and negative cash flows from operations since our inception. We had net losses of
$2.0 million and $13.3 million for the years ended December 31, 2019 and December 31, 2018, respectively. As of December 31, 2019, we
had an accumulated deficit of $1.2 billion. We do not know whether we will ever achieve sustained profitability or whether cash flow from
future operations will be sufficient to meet our needs.

To  date,  we  have  financed  our  operations  primarily  through  the  sale  of  equity  securities  and  debt  and  royalty  interests,  and
payments received under our collaboration and licensing arrangements. The size of our future net losses will depend, in part, on the rate of
our  future  expenditures  and  our  and  our  partners’  ability  to  generate  revenues.  If  our  partners’  product  candidates  are  not  successfully
developed or commercialized by our licensees, or if revenues are insufficient following regulatory approval, we will not achieve profitability
and our business may fail. Our ability to achieve profitability is dependent in large part on the success of our and our licensees’ ability to
license  product  candidates,  and  the  success  of  our  licensees’  development  programs,  both  of  which  are  uncertain.  Our  success  is  also
dependent on our licensees obtaining regulatory approval to market product candidates which may not materialize or prove to be successful.

Our royalty aggregator  strategy may require us to raise additional funds to acquire milestone and royalty interests; we cannot be certain
that  funds  will  be  available  or  available  at  an  acceptable  cost  of  capital,  and  if  they  are  not  available,  we  may  be  unsuccessful  in
acquiring milestone and royalty interests to sustain the business in the future.

We  may  need  to  commit  substantial  funds  to  continue  our  business,  and  we  may  not  be  able  to  obtain  sufficient  funds  on
acceptable terms, if at all. Any additional debt financing or additional equity that we raise may contain terms that are not favorable to us
and/or result in dilution to our stockholders, including pursuant to our 2018 ATM Agreement. If we raise additional funds through licensing
arrangements with third parties, we may be required to relinquish some rights to our technologies or our product candidates, grant licenses
on terms that are not favorable to us or enter into a license arrangement for a product candidate at an earlier stage of development or for a
lesser amount than we might otherwise choose.

If adequate funds are not available on a timely basis, we may:

·

·

·

·

reduce or eliminate royalty aggregation efforts;

further reduce our capital or operating expenditures;

curtail our spending on protecting our intellectual property; or

take other actions which may adversely affect our financial condition or results of operations.

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We  have  significantly  restructured  our  business  and  revised  our  business  plan  and  there  are  no  assurances  that  we  will  be  able  to
successfully implement our revised business plan or successfully operate as a royalty aggregator.

We  have  historically  been  focused  on  discovering  and  developing  innovative  therapeutics  derived  from  our  unique  platform  of
antibody technologies. We have now become a royalty aggregator where we focus on expanding our pipeline of fully-funded programs by
out-licensing our internally developed product candidates and acquiring potential milestone and royalty revenue streams on additional third
party drug product candidates. Our strategy is based on a number of factors and assumptions, some of which are not within our control, such
as the actions of third parties. There can be no assurance that we will be able to successfully execute all or any elements of our strategy, or
that  our  ability  to  successfully  execute  our  strategy  will  be  unaffected  by  external  factors.  If  we  are  unsuccessful  in  acquiring  potential
milestone and royalty revenue streams on additional drug product candidates, or those acquisitions do not perform to our expectations, our
financial performance and balance sheet could be adversely affected.

We may not fully realize the expected benefits of our cost-saving initiatives.

Maintaining  a  low  corporate  cost  structure  is  a  key  element  of  our  current  business  strategy.  If  we  experience  unanticipated
inefficiencies caused by our reduced headcount, we may be unable to fully execute our new strategy.  In addition, we may incur expenses in
excess of what we anticipate. Any of these outcomes could prevent us from meeting our strategic objectives and could adversely impact our
results of operations and financial condition.

Risks Related to Our Reliance on Third Parties

We rely heavily on licensee relationships, and any disputes or litigation with our partners or termination or breach of any of the related
agreements could reduce the financial resources available to us, including our ability to receive milestone payments and future royalty
revenues.

Our  existing  collaborations  may  not  continue  or  be  successful,  and  we  may  be  unable  to  enter  into  future  collaborative
arrangements  to  develop  and  commercialize  our  unpartnered  assets.  Generally,  our  current  collaborative  partners  also  have  the  right  to
terminate  their  collaborations  at  will  or  under  specified  circumstances.  If  any  of  our  collaborative  partners  breach  or  terminate  their
agreements with us or otherwise fail to conduct their collaborative activities successfully (for example, by not making required payments
when due, or at all or failing to engage in commercially reasonable efforts to develop products if required), our product development under
these agreements will be delayed or terminated. Disputes or litigation may also arise with our collaborators (with us and/or with one or more
third parties), including those over ownership rights to intellectual property, know-how or technologies developed with our collaborators.

Our  licensees  rely  on  third  parties  to  provide  services  in  connection  with  our  product  candidate  development  and  manufacturing
programs.  The  inadequate  performance  by  or  loss  of  any  of  these  service  providers  could  affect  our  licensees’  product  candidate
development.

Third  parties  provide  services  in  connection  with  preclinical  and  clinical  development  programs,  including in  vitro  and in  vivo
studies,  assay  and  reagent  development,  immunohistochemistry,  toxicology,  pharmacokinetics,  clinical  trial  support,  manufacturing  and
other outsourced activities. If these service providers do not adequately perform the services for which we or our licensees have contracted,
or cease to continue operations, and we are not able to find a replacement provider quickly or we lose information or items associated with
our drug product candidates, our or our licensees’ development programs and receipt of any potential resulting income may be delayed.

Agreements with other third parties, many of which are significant to our business, expose us to numerous risks.

Because our licensees, suppliers and contractors are independent third parties, they may be subject to different risks than we are
and have significant discretion in, and different criteria for, determining the efforts and resources they will apply related to their agreements
with us. If these licensees, suppliers and contractors do not successfully perform the functions for which they are responsible, we may not
have the capabilities, resources or rights to do so on our own.

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We do not know whether we or our licensees will successfully develop and market any of the products that are or may become the
subject of any of our licensing arrangements. In addition, third-party arrangements such as ours also increase uncertainties in the related
decision-making  processes  and  resulting  progress  under  the  arrangements,  as  we  and  our  licensees  may  reach  different  conclusions,  or
support different paths forward, based on the same information, particularly when large amounts of technical data are involved.

Under our contract with NIAID, a part of the National Institute of Health (“NIH”), we invoiced using NIH provisional rates, and
these are subject to future audits at the discretion of NIAID’s contracting office. In October of 2019, NIH notified us that it engaged KPMG
LLP (“KPMG”) to perform an audit of our Incurred Cost Submissions for 2013, 2014 and 2015 and the audit is still in progress. This audit
may result in an adjustment to revenue previously reported, which potentially could be material.

Failure  of  our  licensees’  product  candidates  to  meet  current  Good  Manufacturing  Practices  standards  may  subject  our  licensees  to
delays in regulatory approval and penalties for noncompliance.

Our  licensees  may  rely  on  third  party  manufacturers  and  such  contract  manufacturers  are  required  to  produce  clinical  product
candidates under current Good Manufacturing Practices (“cGMP”) to meet acceptable standards for use in clinical trials and for commercial
sale, as applicable. If such standards change, the ability of contract manufacturers to produce our and our licensees’ drug product candidates
on the schedule required for our clinical trials or to meet commercial requirements may be affected. In addition, contract manufacturers may
not perform their obligations under their agreements with our licensees or may discontinue their business before the time required by us to
successfully produce clinical and commercial supplies of our licensees’ product candidates.

Contract  manufacturers  are  subject  to  pre-approval  inspections  and  periodic  unannounced  inspections  by  the  FDA  and
corresponding  state  and  foreign  authorities  to  ensure  strict  compliance  with  cGMP  and  other  applicable  government  regulations  and
corresponding foreign standards. We do not have control over a third-party manufacturer’s compliance with these regulations and standards.
Any  difficulties  or  delays  in  contractors’  manufacturing  and  supply  of  our  licensees’  product  candidates  or  any  failure  of  our  licensees’
contractors to maintain compliance with the applicable regulations and standards could increase costs, reduce revenue, make our licensees
postpone or cancel clinical trials, prevent or delay regulatory approval by the FDA and corresponding state and foreign authorities, prevent
the import and/or export of our licensees’ product candidates, or cause any of our licensees’ product candidates that may be approved for
commercial sale to be recalled or withdrawn.

Certain of our technologies are in-licensed from third parties, so our and our licensees’ capabilities using them are restricted and subject
to additional risks.

We  have  licensed  technologies  from  third  parties.  These  technologies  include  phage  display  technologies  licensed  to  us  in
connection with our bacterial cell expression technology licensing program and antibody products. However, our and our licensees’ use of
these  technologies  is  limited  by  certain  contractual  provisions  in  the  licenses  relating  to  them,  and  although  we  have  obtained  numerous
licenses, intellectual property rights in the area of phage display are particularly complex. If we are unable to maintain our licenses, patents
or other intellectual property, we could lose important protections that are material to continuing our operations and for future prospects.
Our licensors also may seek to terminate our license, which could cause us and our licensees to lose the right to use the licensed intellectual
property and adversely affect our and our licensees’ ability to commercialize our technologies, products or services.

Because many of the companies with which we do business also are in the biotechnology sector, the volatility of that sector can affect us
indirectly as well as directly.

The same factors that affect us directly also can adversely affect us indirectly by affecting the ability of our partners and others
with whom we do business to meet their obligations to us and reduce our ability to realize the value of the consideration provided to us by
these other companies in connection with their licensing of our products.

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Risks Related to an Investment in Our Common Stock

Our share price may be volatile, and there may not be an active trading market for our common stock.

There can be no assurance that the market price of our common stock will not decline below its present market price or that there
will be an active trading market for our common stock. The market prices of biotechnology companies have been and are likely to continue
to be highly volatile. Fluctuations in our operating results and general market conditions for biotechnology stocks could have a significant
impact  on  the  volatility  of  our  common  stock  price.  We  have  experienced  significant  volatility  in  the  price  of  our  common  stock.  From
January  1,  2019,  through  March  5,  2020,  the  share  price  of  our  common  stock  has  ranged  from  a  high  of  $28.85  to  a  low  of  $11.50.
Additionally, we have two significant holders of our stock that could affect the liquidity of our stock and have a significant negative impact
on our stock price if one or both of the holders were to quickly sell their ownership positions.

Our results of operations and liquidity needs could be materially negatively affected by market fluctuations or an economic downturn.

Our results of operations could be materially negatively affected by economic conditions generally, both in the United States and
elsewhere  around  the  world.  Concerns  over  inflation,  energy  costs,  geopolitical  issues,  the  availability  and  cost  of  credit,  and  the  U.S.
financial  markets  have  in  the  past  contributed  to,  and  may  continue  in  the  future  contribute  to,  increased  volatility  and  diminished
expectations for the economy and the markets. Domestic and international equity markets periodically experience heightened volatility and
turmoil. These events may have an adverse effect on us. In the event of a market downturn, our results of operations could be adversely
affected  by  those  factors  in  many  ways,  including  making  it  more  difficult  for  us  to  raise  funds  if  necessary,  and  our  stock  price  may
decline.

We may issue additional equity securities and thereby materially and adversely affect the price of our common stock. In addition, under
certain circumstances each share of outstanding Series X and Series Y preferred stock could be converted into 1,000 shares of common
stock which could cause a substantial dilution to our earnings per share and a change in the majority voting control of our Company, if
enough of such preferred shares are converted to common shares.

We expect that significant additional capital will be needed in the future to continue our planned operations. To the extent we raise
additional  capital  by  issuing  equity  securities,  our  stockholders  may  experience  substantial  dilution.  We  may  sell  common  stock,
convertible securities or other equity securities in one or more transactions at prices and in such a manner as we determine from time to time,
including pursuant to our 2018 ATM Agreement. If we sell common stock, convertible securities or other equity securities in more than one
transaction,  investors  may  be  materially  diluted  by  subsequent  sales.  These  sales  may  also  result  in  material  dilution  to  our  existing
stockholders, and new investors could gain rights superior to our existing stockholders. If we issue additional equity securities, the price of
our common stock may be materially and adversely affected.

We  are  authorized  to  issue,  without  stockholder  approval,  1,000,000  shares  of  preferred  stock,  of  which  5,003  shares  of  Series  X
preferred  stock  and  1,252.772  shares  of  Series  Y  preferred  stock  were  issued  and  outstanding  as  of  December  31,  2019.  Each  share  of
Series X and Series Y is convertible into 1,000 shares of registered common stock. The total number of shares of common stock issuable
upon conversion of all issued Series X and Series Y convertible preferred stock would be 6,255,772 shares. Each share is convertible at the
option  of  the  holder  at  any  time,  provided  that  the  holder  will  be  prohibited  from  converting  into  common  stock  if,  as  a  result  of  such
conversion, the holder, together with its affiliates, would beneficially own a number of shares above a conversion blocker, which is initially
set  at  19.99%  of  our  total  common  stock  then  issued  and  outstanding  immediately  following  the  conversion  of  such  shares. A  holder  of
Series X or Y preferred shares may elect to increase or decrease the conversion blocker above or below 19.99% on 61 days’ notice, provided
the conversion blocker does not exceed the limits under Nasdaq Marketplace Rule 5635(b), to the extent then applicable. If holders of our
Series X and Series Y convertible preferred stock elect to convert their preferred shares into common stock such conversion would dilute
our  currently  outstanding  common  stock  both  in  number  and  in  earnings  per  share.  Biotechnology  Value  Fund,  L.P.  (“BVF”)  (and  its
affiliates), as current holders of all shares of our Series X and Series Y preferred stock, would, if they converted all such shares to common
stock,  obtain  majority  voting  control  of  the  Company.  BVF  has  notified  us  of  their  intention  to  convert  all  of  their  shares  of  Series  Y
preferred stock into common

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stock. Upon such conversion, BVF will own approximately 35.4% the Company’s total outstanding shares of common stock.

In  addition,  funding  from  collaboration  partners  and  others  has  in  the  past  and  may  in  the  future  involve  issuance  by  us  of  our
common  stock.  We  cannot  be  certain  how  the  purchase  price  of  such  shares,  the  relevant  market  price  or  premium,  if  any,  will  be
determined or when such determinations will be made.

Any  issuance  by  us  of  equity  securities,  whether  through  an  underwritten  public  offering,  an  at  the  market  offering,  a  private
placement, in connection with a collaboration or otherwise could result in dilution in the value of our issued and outstanding shares, and a
decrease in the trading price of our common stock.

We  may  sell  additional  equity  or  debt  securities  to  fund  our  operations,  which  may  result  in  dilution  to  our  stockholders  and  impose
restrictions on our business.

In  order  to  raise  additional  funds  to  support  our  operations,  we  may  sell  additional  equity  or  convertible  debt  securities,  which
would result in dilution to our stockholders and/or debt securities which may impose restrictive covenants that would adversely impact our
business. The sale of additional equity or convertible debt securities could result in the issuance of additional shares of our capital stock and
dilution to all of our stockholders. The incurrence of indebtedness would result in increased fixed payment obligations and could also result
in certain restrictive covenants, such as limitations on our ability to incur additional debt, limitations on our ability to acquire, sell or license
intellectual property rights and other operating restrictions that could adversely impact our ability to conduct our business. If we are unable
to expand our operations or otherwise capitalize on our business opportunities, our business, financial condition and results of operations
could be materially adversely affected and we may not be able to meet our debt service obligations.

Our organizational documents contain provisions that may prevent transactions that could be beneficial to our stockholders and may
insulate our management from removal.

Our charter and by-laws:

·

·

require certain procedures to be followed and time periods to be met for any stockholder to propose matters to be considered
at annual meetings of stockholders, including nominating directors for election at those meetings; and

authorize our Board of Directors to issue up to 1,000,000 shares of preferred stock without stockholder approval and to set
the  rights,  preferences  and  other  designations,  including  voting  rights,  of  those  shares  as  the  Board  of  Directors  may
determine.

In addition, we are subject to the provisions of Section 203 of the Delaware General Corporation Law (the “DGCL”), that may
prohibit large stockholders, in particular those owning 15% or more of our outstanding common stock, from merging or combining with us.

These  provisions  of  our  organizational  documents  and  the  DGCL,  alone  or  in  combination  with  each  other,  may  discourage
transactions involving actual or potential changes of control, including transactions that otherwise could involve payment of a premium over
prevailing market prices to holders of common stock, could limit the ability of stockholders to approve transactions that they may deem to
be in their best interests, and could make it considerably more difficult for a potential acquirer to replace management.

As a public company in the United States, we are subject to the Sarbanes-Oxley Act. We have determined our disclosure controls and
procedures and our internal control over financial reporting are effective. We can provide no assurance that we will, at all times, in the
future be able to report that our internal controls over financial reporting are effective.

Companies that file reports with the SEC, including us, are subject to the requirements of Section 404 of the Sarbanes-Oxley Act of
2002 (“SOX”). Section 404 requires management to establish and maintain a system of internal control over financial reporting, and annual
reports on Form 10‑K filed under the Securities Exchange Act of 1934, as

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amended (the “Exchange Act”), must contain a report from management assessing the effectiveness of our internal control over financial
reporting.  Ensuring  we  have  adequate  internal  financial  and  accounting  controls  and  procedures  in  place  to  produce  accurate  financial
statements  on  a  timely  basis  is  a  time-consuming  effort  that  needs  to  be  re-evaluated  frequently.  Failure  on  our  part  to  have  effective
internal financial and accounting controls would cause our financial reporting to be unreliable, could have a material adverse effect on our
business, operating results, and financial condition, and could cause the trading price of our common stock to fall.

We incur significant costs as a result of operating as a public company, which may adversely affect our operating results and financial
condition.

As  a  public  company,  we  incur  significant  accounting,  legal  and  other  expenses,  including  costs  associated  with  our  public
company reporting requirements. We also anticipate that we will continue to incur costs associated with corporate governance requirements,
including requirements and rules under SOX and the Dodd-Frank Wall Street Reform and Consumer Protection Act ("Dodd-Frank") among
other rules and regulations implemented by the SEC, as well as listing requirements of Nasdaq. Furthermore, these laws and regulations
could make it difficult or costly for us to obtain certain types of insurance, including director and officer liability insurance, and we may be
forced to accept reduced policy limits and coverage or incur substantially higher costs to obtain the same or similar coverage. The impact of
these requirements could also make it difficult for us to attract and retain qualified persons to serve on our Board of Directors, our Board
Committees or as executive officers.

New laws and regulations as well as changes to existing laws and regulations affecting public companies, including the provisions
of  SOX  and  Dodd-Frank  and  rules  adopted  by  the  SEC  and  Nasdaq,  will  likely  result  in  increased  costs  to  us  as  we  respond  to  their
requirements. We continue to invest resources to comply with evolving laws and regulations, and this investment may result in increased
general and administrative expense.

Our ability to use our net operating loss carry-forwards and other tax attributes will be substantially limited by Section 382 of the U.S.
Internal Revenue Code.

Under  the  federal  income  tax  law,  federal  net  operating  losses  incurred  in  2019  and  in  future  years  may  be  carried  forward
indefinitely,  but  the  deductibility  of  such  federal  net  operating  losses  is  limited.  It  is  uncertain  if  and  to  what  extent  various  states  will
conform  to  the  federal  tax  law.  In  addition,  Section  382  of  the  U.S.  Internal  Revenue  Code  of  1986,  as  amended,  and  corresponding
provisions of state law, generally limit the ability of a corporation that undergoes an “ownership change” to utilize its net operating loss
carry-forwards  (“NOLs”)  and  certain  other  tax  attributes  against  any  taxable  income  in  taxable  periods  after  the  ownership  change.  The
amount of taxable income in each taxable year after the ownership change that may be offset by pre-change NOLs and certain other pre-
change tax attributes is generally equal to the product of (a) the fair market value of the corporation’s outstanding shares (or, in the case of a
foreign  corporation,  the  fair  market  value  of  items  treated  as  connected  with  the  conduct  of  a  trade  or  business  in  the  United  States)
immediately  prior  to  the  ownership  change  and  (b)  the  long-term  tax  exempt  rate  (i.e.,  a  rate  of  interest  established  by  the  U.S.  Internal
Revenue Service that fluctuates from month to month). In general, an “ownership change” occurs whenever the percentage of the shares of
a corporation owned, directly or indirectly, by “5‑percent shareholders” (within the meaning of Section 382 of the Internal Revenue Code)
increases by more than 50 percentage points over the lowest percentage of the shares of such corporation owned, directly or indirectly, by
such “5‑percent shareholders” at any time over the preceding three years.

Based on an analysis under Section 382 of the Internal Revenue Code (which subjects the amount of pre-change NOLs and certain
other pre-change tax attributes that can be utilized to an annual limitation), we experienced ownership changes in 2009 and 2012, which
substantially  limit  the  future  use  of  our  pre-change  NOLs  and  certain  other  pre-change  tax  attributes  per  year.  In  February  16,  2017,  we
completed  an  equity  financing  for  net  proceeds  of  $24.8  million  which  triggered  an  additional  ownership  change  under  Section  382  that
significantly impacted the availability of our tax attributes against future income. Further, due to the existence of a net unrealized built-in
loss  at  the  ownership  change  date,  Section  382  further  limits  our  ability  to  fully  utilize  the  tax  deductions  associated  with  certain  of  our
assets, including depreciation and amortization deductions recognized during the 60‑month period following the ownership change ending
in 2022. Although these deductions will occur in the post-change period, Section 382 treats the deductions as pre-change losses subject to
the annual 382 limitation. As of December 31, 2019, we have excluded the NOLs and research and development credits that will expire as a
result of the annual limitations. To the extent that we do not utilize our carry-

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forwards within the applicable statutory  carry-forward  periods,  either  because  of  Section  382  limitations  or  the  lack  of  sufficient  taxable
income, the carry-forwards will also expire unused.

The comprehensive tax reform bill could adversely affect our business and financial condition.

On  December  22,  2017,  the  Tax  Cuts  and  Jobs Act  of  2017  was  signed  into  law  that  significantly  revises  the  Internal  Revenue
Code of 1986, as amended. The federal income tax law, among other things, contains significant changes to corporate taxation, including
reduction of the corporate tax rate from a top marginal rate of 35% to a flat rate of 21%, limitation of the tax deduction for interest expense
to 30% of adjusted earnings (except for certain small businesses), limitation of the deduction for net operating losses to 80% of current year
taxable income and elimination of net operating loss carrybacks, immediate deductions for certain new investments instead of deductions
for depreciation expense over time, and modifying or repealing many business deductions and credits which may, as applicable, have an
adverse effect on our profitability. Notwithstanding the reduction in the corporate income tax rate, the overall impact of the new federal tax
law  is  uncertain  and  our  business  and  financial  condition  could  be  adversely  affected.  In  addition,  it  is  uncertain  if  and  to  what  extent
various states will conform to the federal tax law. The impact of this tax reform on holders of our common stock is also uncertain and could
be adverse.

Risks Related to the Development and Commercialization of our Current and Future Product Candidates

We may not be able to successfully identify and acquire and/or in-license other products, product candidates, programs or companies to
grow and diversify our business, and, even if we are able to do so, we may not be able to successfully manage the risks associated with
integrating  any  such  products,  product  candidates,  programs  or  companies  into  our  business  or  we  may  otherwise  fail  to  realize  the
anticipated benefits of these licenses or acquisitions.

To grow and diversify our business, we plan to continue our business development efforts to identify and seek to acquire and/or in-
license  potential  milestone  and  royalty  streams  or  companies.  Future  growth  through  acquisition  or  in-licensing  will  depend  upon  the
availability of suitable products, product candidates, programs or companies for acquisition or in-licensing on acceptable prices, terms and
conditions. Even if appropriate opportunities are available, we may not be able to acquire rights to them on acceptable terms, or at all. The
competition to acquire or in-license rights to promising products, product candidates, programs and companies is fierce, and many of our
competitors  are  large,  multinational  pharmaceutical  and  biotechnology  companies  with  considerably  more  financial,  development  and
commercialization resources, personnel, and experience than we have. In order to compete successfully in the current business climate, we
may  have  to  pay  higher  prices  for  assets  than  may  have  been  paid  historically,  which  may  make  it  more  difficult  for  us  to  realize  an
adequate return on any acquisition.

Even if we are able to successfully identify and acquire or in-license new products, product candidates, programs or companies, we
may not be able to successfully manage the risks associated with integrating any products, product candidates, programs or companies into
our  business  or  the  risks  arising  from  anticipated  and  unanticipated  problems  in  connection  with  an  acquisition  or  in-licensing.  Further,
while we seek to mitigate risks and liabilities of potential acquisitions through, among other things, due diligence, there may be risks and
liabilities  that  such  due  diligence  efforts  fail  to  discover,  that  are  not  disclosed  to  us,  or  that  we  inadequately  assess.  Any  failure  in
identifying and managing these risks and uncertainties effectively would have a material adverse effect on our business. In any event, we
may not be able to realize the anticipated benefits of any acquisition or in-licensing for a variety of reasons, including the possibility that a
product candidate fails to advance to clinical development, proves not to be safe or effective in clinical trials, or that a product fails to reach
its  forecasted  commercial  potential  or  that  the  integration  of  a  product,  product  candidate,  program  or  company  gives  rise  to  unforeseen
difficulties and expenditures. Any failure in identifying and managing these risks and uncertainties would have a material adverse effect on
our business.

We may not be successful in entering into out-license agreements for our product candidates, which may adversely affect our liquidity
and business.

We  intend  to  pursue  a  strategy  to  out-license  all  of  our  product  candidates  in  order  to  provide  for  potential  payments,  funding
and/or royalties on future product sales. The out-license agreements may be structured to share in the proceeds received by a licensee as a
result of further development or commercialization of the product candidates. We

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may not be successful in entering into out-licensing agreements with favorable terms as a result of factors, many of which are outside of our
control. These factors include:

·

·

·

research and spending priorities of potential licensing partners;

willingness of, and the resources available to, pharmaceutical and biotechnology companies to in-license product candidates
to fill their clinical pipelines; or

our inability to generate proof-of-concept data and to agree with a potential partner on the value of our product candidates, or
on the related terms.

If we are unable to enter into out-licensing agreements for our product candidates and realize license,  milestone and/or royalty fees

when anticipated, it may adversely affect our liquidity, which in turn may harm our business.

If our licensees’ therapeutic product candidates do not receive regulatory approval, our licensees will be unable to market them.

Our  licensees’  product  candidates  cannot  be  manufactured  and  marketed  in  the  United  States  or  any  other  countries  without
required regulatory approvals. The U.S. government and governments of other countries extensively regulate many aspects of our product
candidates, including:

·

clinical development and testing;

· manufacturing;

·

·

·

·

·

labeling;

storage;

record keeping;

promotion and marketing; and

importing and exporting.

In the United States, the FDA regulates pharmaceutical products under the Federal Food, Drug, and Cosmetic Act and other laws,

including, in the case of biologics, the Public Health Service Act.

Initiation of clinical trials requires approval by health authorities. Clinical trials involve the administration of the investigational
new drug to healthy volunteers or to patients under the supervision of a qualified principal investigator. Clinical trials must be conducted in
accordance with FDA and International Conference on Harmonization Good Clinical Practices and the European Clinical Trials Directive,
as applicable, under protocols that detail the objectives of the study, the parameters to be used to monitor safety and the efficacy criteria to
be evaluated. Other national, foreign and local regulations also may apply. The developer of the drug must provide information relating to
the  characterization  and  controls  of  the  product  before  administration  to  the  patients  participating  in  the  clinical  trials.  This  requires
developing  approved  assays  of  the  product  to  test  before  administration  to  the  patient  and  during  the  conduct  of  the  trial.  In  addition,
developers of pharmaceutical products must provide periodic data regarding clinical trials to the FDA and other health authorities, and these
health authorities may issue a clinical hold upon a trial if they do not believe, or cannot confirm, that the trial can be conducted without
unreasonable risk to the trial participants.

The  results  of  the  preclinical  studies  and  clinical  testing,  together  with  chemistry,  manufacturing  and  controls  information,  are
submitted to the FDA and other health authorities in the form of a New Drug Application (“NDA”) for a drug, and in the form of a Biologic
License Application (“BLA”) for a biological product, requesting approval to

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commence  commercial  sales.  In  responding  to  an  NDA  or  BLA,  the  FDA  or  foreign  health  authorities  may  grant  marketing  approvals,
request  additional  information  or  further  research,  or  deny  the  application  if  they  determine  the  application  does  not  satisfy  regulatory
approval criteria. Regulatory approval of an NDA, BLA, or supplement is never guaranteed. The approval process can take several years, is
extremely expensive and can vary substantially based upon the type, complexity, and novelty of the products involved, as well as the target
indications. Our licensees ultimately may not be able to obtain approval in a timely fashion or at all.

The FDA and foreign health authorities have substantial discretion in the drug and biologics approval processes. Despite the time
and  expense  incurred,  failure  can  occur  at  any  stage,  and  our  potential  development  partners  could  encounter  problems  that  cause
abandonment of clinical trials or cause them to repeat or perform additional preclinical, clinical or manufacturing-related studies.

Changes in the regulatory approval policy during the development period, changes in, or the enactment of additional regulations or
statutes, or changes in regulatory review for a submitted product application may cause delays in the approval or rejection of an application.

The FDA and other regulatory agencies have substantial discretion in both the product approval process and manufacturing facility
approval process, and as a result of this discretion and uncertainties about outcomes of testing, we cannot predict at what point, or whether,
the FDA or other regulatory agencies will be satisfied with our licensees’ submissions or whether the FDA or other regulatory agencies will
raise questions that may be material and delay or preclude product approval or manufacturing facility approval. In light of this discretion
and  the  complexities  of  the  scientific,  medical  and  regulatory  environment,  our  or  our  licensees’  interpretation  or  understanding  of  the
FDA’s  or  other  regulatory  agencies’  requirements,  guidelines  or  expectations  may  prove  incorrect,  which  also  could  delay  further  or
increase the cost of the approval process.

Our licensees and potential milestone and royalty providers face uncertain results of clinical trials of product candidates.

Drug development has inherent risk, and our licensees and potential milestone and royalty providers are required to demonstrate
through adequate and well-controlled clinical trials that product candidates are effective, with a favorable benefit-risk profile for use in their
target profiles before they can seek regulatory approvals for commercial use. It is possible we or our licensees may never receive regulatory
approval for any licensed product candidates. Even if a product candidate receives regulatory approval, the resulting product may not gain
market acceptance among physicians, patients, healthcare payors and the medical community.

Our licensees’ product candidates require significant additional research and development, extensive preclinical studies and clinical
trials  and  regulatory  approval  prior  to  any  commercial  sales.  This  process  is  lengthy  and  expensive,  often  taking  a  number  of  years. As
clinical results frequently are susceptible to varying interpretations that may delay, limit or prevent regulatory approvals, the length of time
necessary to complete clinical trials and to submit an application for marketing approval for a final decision by a regulatory authority varies
significantly. As a result, it is uncertain whether:

·

·

·

·

·

·

our licensees’ future filings will be delayed;

our licensees’ preclinical studies will be successful;

our licensees will be successful in generating viable product candidates;

we will be successful in finding collaboration and licensing partners to advance our product candidates on our behalf;

our licensees will be able to provide necessary data;

results of future clinical trials by our licensees will justify further development; or

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·

our licensees ultimately will achieve regulatory approval for our product candidates.

The  timing  of  the  commencement,  continuation  and  completion  of  clinical  trials  by  our  licensees  may  be  subject  to  significant
delays relating to various causes, including failure to complete preclinical testing and earlier-stage clinical trials in a timely manner, inability
to  engage  contract  research  organizations  and  other  service  providers,  scheduling  conflicts  with  participating  clinicians  and  clinical
institutions,  changes  in  key  personnel  at  clinical  institutions,  difficulties  in  identifying  and  enrolling  patients  who  meet  trial  eligibility
criteria and shortages of available drug supply. In addition, since we license our product candidates to others to fund and conduct clinical
trials, we have limited control over how quickly and efficiently such licensees advance those trials. Patient enrollment is a function of many
factors,  including  the  size  of  the  patient  population,  the  proximity  of  patients  to  clinical  sites,  the  concentration  of  patients  in  specialist
centers, the eligibility criteria for the trial, the existence of competing clinical trials and the availability of alternative or new treatments.
Regardless of the initial size or relative complexity of a clinical trial, the costs of such trial may be higher than expected due to increases in
duration or size of the trial, changes in the protocol under which the trial is being conducted, additional or special requirements of one or
more of the healthcare centers where the trial is being conducted, or changes in the regulatory requirements applicable to the trial or in the
standards or guidelines for approval of the product candidate being tested or for other unforeseen reasons.

In addition, our licensees may conduct clinical trials in foreign countries, which may subject them to further delays and expenses as
a result of increased drug shipment costs, additional regulatory requirements and the engagement of foreign clinical research organizations,
and may expose us and our licensees to risks associated with foreign currency transactions to make contract payments denominated in the
foreign currency where the trial is being conducted.

New  products  and  technologies  of  other  companies  may  render  some  or  all  of  our  licensees’  product  candidates  noncompetitive  or
obsolete.

New  developments  by  others  may  render  our  licensees’  product  candidates  or  technologies  obsolete  or  uncompetitive.
Technologies  developed  and  utilized  by  the  biotechnology  and  pharmaceutical  industries  are  changing  continuously  and  substantially.
Competition in antibody-based technologies is intense and is expected to increase in the future as a number of established biotechnology
firms and large chemical and pharmaceutical companies advance in these fields. Many of these competitors may be able to develop products
and processes competitive with or superior to our and our licensees for many reasons, including that they may have:

·

·

·

·

significantly greater financial resources;

larger research and development staffs;

entered into arrangements with, or acquired, biotechnology companies to enhance their capabilities; or

extensive experience in preclinical testing and human clinical trials.

These  factors  may  enable  others  to  develop  products  and  processes  competitive  with  or  superior  to  our  own  or  those  of  our
licensees. In addition, a significant amount of research in biotechnology is being carried out in universities and other non-profit research
organizations. These entities are becoming increasingly interested in the commercial value of their work and may become more aggressive
in seeking patent protection and licensing arrangements. Furthermore, many companies and universities tend not to announce or disclose
important  discoveries  or  development  programs  until  their  patent  position  is  secure  or,  for  other  reasons,  later. As  a  result,  we  and  our
licensees may not be able to track development of competitive products, particularly at the early stages.

Positive developments in connection with a potentially competing product may have an adverse impact on our future potential for
receiving revenue derived from development milestones and royalties. For example, if another product is perceived to have a competitive
advantage,  or  another  product’s  failure  is  perceived  to  increase  the  likelihood  that  our  licensed  product  will  fail,  our  licensees  may  halt
development of our licensed product candidates.

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Our licensees may be unable to price our products effectively or obtain coverage and adequate reimbursement for sales of our products,
which would prevent our licensees’ products from becoming profitable and negatively affect the royalties we may receive.

If our third-party licensees succeed in bringing our product candidates to the market, they may not be considered cost effective,
and reimbursement to the patient may not be available or may not be sufficient to allow our licensees to sell the products on a competitive
basis.  In  both  the  United  States  and  elsewhere,  sales  of  medical  products  and  treatments  are  dependent,  in  part,  on  the  availability  of
coverage  and  adequate  reimbursement  from  third-party  payors,  such  as  government  and  private  insurance  plans.  Significant  uncertainty
exists  as  to  the  coverage  and  reimbursement  status  of  any  products  for  which  our  licensees  may  obtain  regulatory  approval.  Even  if
coverage is available, the associated reimbursement rate may not be adequate for us and our licensees to cover related costs. Additionally,
coverage  and  reimbursement  policies  for  drug  products  can  differ  significantly  from  payor  to  payor  as  there  is  no  uniform  policy  of
coverage and reimbursement for drug products among third‑party payors in the United States. Therefore, the process of obtaining coverage
and reimbursement is often time‑consuming and costly.

Third-party  payors  are  increasingly  challenging  the  prices  charged  for  pharmaceutical  products  and  services.  Our  business  is
affected by the efforts of government and third-party payors to contain or reduce the cost of healthcare through various means. In the United
States, there have been and will continue to be a number of federal and state proposals to implement government controls on pricing.

In  addition,  the  emphasis  on  managed  care  in  the  United  States  has  increased  and  will  continue  to  increase  the  pressure  on  the
pricing of pharmaceutical products. We cannot predict whether any legislative or regulatory proposals will be adopted or the effect these
proposals or managed care efforts may have on our or our licensees’ businesses.

We do not know whether there will be, or will continue to be, a viable market for the product candidates in which we have an ownership
or royalty interest.

Even  if  product  candidates  in  which  we  have  an  interest  receive  approval  in  the  future,  they  may  not  be  accepted  in  the
marketplace.  In  addition,  our  licensees  may  experience  difficulties  in  launching  new  products,  many  of  which  are  novel  and  based  on
technologies  that  are  unfamiliar  to  the  healthcare  community.  We  have  no  assurance  healthcare  providers  and  patients  will  accept  such
products,  if  developed.  Similarly,  physicians  may  not  accept  a  product  if  they  believe  other  products  to  be  more  effective  or  more  cost
effective or are more comfortable prescribing other products.

Furthermore, government agencies, as well as private organizations involved in healthcare, from time to time publish guidelines or
recommendations  to  healthcare  providers  and  patients.  Such  guidelines  or  recommendations  can  be  very  influential  and  may  adversely
affect product usage directly (for example, by recommending a decreased dosage of a product in conjunction with a concomitant therapy) or
indirectly (for example, by recommending a competitive product over our product). Consequently, we do not know if physicians or patients
will adopt or use our products for their approved indications.

Even  approved  and  marketed  products  are  subject  to  risks  relating  to  changes  in  the  market  for  such  products.  Introduction  or
increased  availability  of  generic  or  biosimilar  versions  of  products  can  alter  the  market  acceptance  of  branded  products.  In  addition,
unforeseen safety issues may arise at any time, regardless of the length of time a product has been on the market.

We are exposed to an increased risk of product liability claims.

The testing, marketing and sales of medical products entails an inherent risk of allegations of product liability. In the past, we were
party to product liability claims filed against Genentech Inc. and, even though Genentech agreed to indemnify us in connection with these
matters and these matters have been settled, there can be no assurance other product liability lawsuits will not result in liability to us or that
our insurance or contractual arrangements will provide us with adequate protection against such liabilities. In the event of one or more large,
unforeseen awards of damages against us, our product liability insurance may not provide adequate coverage. A significant product liability
claim for which we were not covered by insurance or indemnified by a third party would have to be paid from cash or other assets, which
could

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have an adverse effect on our business and the value of our common stock. To the extent we have sufficient insurance coverage, such a
claim  would  presumably  result  in  higher  subsequent  insurance  rates.  In  addition,  product  liability  claims  can  have  various  other
ramifications,  including  loss  of  future  sales  opportunities,  increased  costs  associated  with  replacing  products,  a  negative  impact  on  our
goodwill and reputation, and divert our management’s attention from our business, each of which could also adversely affect our business
and operating results.

If  we  and  our  partners  are  unable  to  protect  our  intellectual  property,  in  particular  our  patent  protection  for  our  principal  products,
product candidates and processes, and prevent the use of the covered subject matter by third parties, our licensees’ ability to compete in
the market will be harmed, and we may not realize our profit potential.

We rely on patent protection, as well as a combination of copyright, trade secret, and trademark laws to protect our proprietary
technology  and  prevent  others  from  duplicating  our  products  or  product  candidates.  However,  these  means  may  afford  only  limited
protection and may not:

·

·

·

prevent our competitors from duplicating our products;

prevent our competitors from gaining access to our proprietary information and technology; or

permit us to gain or maintain a competitive advantage.

Because of the length of time and the expense associated with bringing new products to the marketplace, we and our partners hold
and are in the process of applying for a number of patents in the United States and abroad to protect our product candidates and important
processes and also have obtained or have the right to obtain exclusive licenses to certain patents and applications filed by others. However,
the mere issuance of a patent is not conclusive as to its validity or its enforceability.

The  U.S.  Federal  Courts,  the  U.S.  Patent  &  Trademark  Office  or  equivalent  national  courts  or  patent  offices  elsewhere  may
invalidate our patents or find them unenforceable. The America Invents Act introduced post-grant review procedures subjecting U.S. patents
to post-grant review procedures similar to European oppositions. U.S. patents owned or licensed by us or our licensees may therefore be
subject to post-grant review procedures, as well as other forms of review and re-examination. A decision in such proceedings adverse to our
interests could result in the loss of valuable patent rights, which would have a material adverse effect on our business. In addition, the laws
of foreign countries may not protect our intellectual property rights effectively or to the same extent as the laws of the United States.

If our intellectual property rights are not protected adequately, our licensees may not be able to commercialize our technologies or
products, and our competitors could commercialize our technologies or products, which could result in a decrease in our licensees’ sales and
market share that would harm our business and operating results. Specifically, the patent position of biotechnology companies generally is
highly uncertain and involves complex legal and factual questions. The legal standards governing the validity of biotechnology patents are
in transition, and current defenses as to issued biotechnology patents may not be adequate or available in the future. Accordingly, there is
uncertainty as to:

·

·

·

whether any pending or future patent applications held by us or our partners will result in an issued patent, or whether issued
patents will provide meaningful protection against competitors or competitive technologies;

whether  competitors  will  be  able  to  design  around  our  or  our  partners’ patents  or  develop  and  obtain  patent  protection  for
technologies, designs or methods that are more effective than those covered by our patents and patent applications; or

the extent to which our or our partners’ product candidates could infringe on the intellectual property rights of others, which
may lead to costly litigation, result in the payment of substantial damages or royalties, and prevent our licensees from using
our technology or product candidates.

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If certain patents issued to others are upheld or if certain patent applications filed by others are issued and upheld, our licensees
may require licenses from others to develop and commercialize certain potential products incorporating our technology or we may become
involved in litigation to determine the proprietary rights of others. These licenses, if required, may not be available on acceptable terms, and
any such litigation will presumably be costly and may have other adverse effects on our business, such as inhibiting our licensees’ ability to
compete in the marketplace and absorbing significant management time.

Due to the uncertainties regarding biotechnology patents, we also have relied and will continue to rely upon trade secrets, know-
how  and  continuing  technological  advancement  to  develop  and  maintain  our  competitive  position.  Our  employees  and  contractors  are
typically  required  to  sign  confidentiality  agreements  under  which  they  agree  not  to  use  or  disclose  any  of  our  proprietary  information.
Research and development contracts and relationships between us and our scientific consultants and potential licensees provide access to
aspects of our know-how that are protected generally under confidentiality agreements. These confidentiality agreements may be breached
or  may  not  be  enforced  by  a  court.  To  the  extent  proprietary  information  is  divulged  to  competitors  or  to  the  public  generally,  such
disclosure may adversely affect our licensees’ ability to develop or commercialize our products by giving others a competitive advantage or
by undermining our patent position.

Litigation  regarding  intellectual  property  and/or  the  enforcement  of  our  contractual  rights  against  licensees  and  third  parties  can  be
costly and expose us to risks of counterclaims against us.

We may be required to engage in litigation or other proceedings to protect our intellectual property and/or enforce our contractual
rights  against  former  or  current  licensees  or  third  parties,  including  third-party  collaborators  of  such  licensees.  The  cost  to  us  of  this
litigation,  even  if  resolved  in  our  favor,  could  be  substantial.  Such  litigation  and  any  negotiations  leading  up  to  it  also  could  divert
management’s  attention  and  resources.  If  this  litigation  is  resolved  against  us,  we  may  lose  the  value  associated  with  contract  rights
contained  in  our  arrangements  with  licensees  and  third  parties,  our  patents  may  be  declared  invalid,  and  we  could  be  held  liable  for
significant damages. While it is our current plan to pursue, on a selective basis, potential material contractual breaches against licensees and
third-parties (including third-party collaborators of licensees) and/or infringement of our intellectual property rights or technology, there can
be  no  assurance  that  any  such  enforcement  actions  will  be  successful,  or  if  successful,  the  timing  of  such  success  or  that  we  will  have
sufficient capital to prosecute any such actions to a successful conclusion.

In addition, we may be subject to claims that we, or our licensees, are infringing other parties’ patents. If such claims are resolved
against us, we or our licensees may be enjoined from developing, manufacturing, selling or importing products, processes or services unless
we  obtain  a  license  from  the  other  party.  Such  license  may  not  be  available  on  reasonable  terms  or  at  all,  thus  preventing  us,  or  our
licensees, from using these products, processes or services and adversely affecting our potential future revenue.

Risks Related to Employees, Location, Data Integrity, and Litigation

The  loss  of  key  personnel,  including  our  Chief  Executive  Officer  or  Chief  Financial  Officer,  could  delay  or  prevent  achieving  our
objectives.

Our business efforts could be adversely affected by the loss of one or more key members of our staff, particularly our executive
officers: James R. Neal, our Chief Executive Officer and Thomas Burns, our Senior Vice President, Finance and Chief Financial Officer.
We currently do not have key person insurance on any of our employees.

Because we are a small biopharmaceutical focused company with limited resources, we may not be able to attract and retain qualified
personnel.

We had 10 employees as of March 5, 2020. We may require additional experienced executive, accounting, legal, administrative
and other personnel from time to time in the future. There is intense competition for the services of these personnel, especially in California.
Moreover, we expect that the high cost of living in the San Francisco Bay Area, where our headquarters is located, may impair our ability to
attract and retain employees in the future. If we do not succeed in

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attracting new personnel and retaining and motivating existing personnel, our business may suffer and we may be unable to implement our
current initiatives or grow effectively.

We rely and will continue to rely on outsourcing arrangements for many of our activities, including financial reporting and accounting
and human resources.

        Due to our small number of employees, we rely, and expect to continue to rely, on outsourcing arrangements for a significant portion of
our  activities,  including  financial  reporting  and  accounting  and  human  resources,  as  well  as  for  certain  of  our  functions  as  a  public
company.  We  may  have  limited  control  over  these  third  parties  and  we  cannot  guarantee  that  they  will  perform  their  obligations  in  an
effective and timely manner.

Our  employees  may  engage  in  misconduct  or  other  improper  activities,  including  noncompliance  with  regulatory  standards  and
requirements and insider trading.

        We are exposed to the risk of employee fraud or other misconduct. Misconduct by employees could include intentional failures to
comply with applicable regulations, provide accurate information to regulatory authorities, comply with federal and state fraud and abuse
laws and regulations, report financial information or data accurately or disclose unauthorized activities to us. In particular, the health care
industry  is  subject  to  extensive  laws  and  regulations  intended  to  prevent  fraud,  misconduct,  kickbacks,  self-dealing  and  other  abusive
practices. It is not always possible to identify and deter employee misconduct, 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 be in compliance with these laws or regulations. If any such actions are instituted against us,
and  we  are  not  successful  in  defending  ourselves  or  asserting  our  rights,  those  actions  could  have  a  significant  impact  on  our  business,
including the imposition of significant fines or other sanctions.

Calamities, power shortages or power interruptions at our Emeryville headquarters could disrupt our business and adversely affect our
operations.

Our  corporate  headquarters  is  located  in  Emeryville,  California.  This  location  is  in  an  area  of  seismic  activity  near  active
earthquake faults. Any earthquake, tsunami, terrorist attack, fire, power shortage or other calamity affecting our facilities may disrupt our
business and could have material adverse effect on our results of operations.

Our business and operations would suffer in the event of system failures.

Despite the implementation of security measures, our internal computer systems and those of our current and any future licensees,
suppliers, contractors and consultants are vulnerable to damage from cyberattacks, computer viruses, unauthorized access, natural disasters,
terrorism,  war  and  telecommunication  and  electrical  failures.  We  could  experience  failures  in  our  information  systems  and  computer
servers,  which  could  be  the  result  of  a  cyberattacks  and  could  result  in  an  interruption  of  our  normal  business  operations  and  require
substantial  expenditure  of  financial  and  administrative  resources  to  remedy.  System  failures,  accidents  or  security  breaches  can  cause
interruptions in our operations and can result in a material disruption of our development programs and other business operations. The loss
of clinical trial data from completed or future clinical trials could result in delays in our regulatory approval efforts and significantly increase
our costs to recover or reproduce the data. Similarly, we rely on third parties to manufacture our product candidates, and conduct clinical
trials  of  our  product  candidates,  and  similar  events  relating  to  their  computer  systems  could  also  have  a  material  adverse  effect  on  our
business.  To  the  extent  that  any  disruption  or  security  breach  were  to  result  in  a  loss  of,  or  damage  to,  our  data  or  applications,  or
inappropriate  disclosure  of  confidential  or  proprietary  information,  we  could  incur  liability  and  the  development  of  any  of  our  product
candidates could be delayed or otherwise adversely affected.

Data breaches and cyberattacks could compromise our intellectual property or other sensitive information and cause significant damage
to our business and reputation.

In  the  ordinary  course  of  our  business,  we  maintain  sensitive  data  on  our  networks,  including  our  intellectual  property  and

proprietary or confidential business information relating to our business and that of our customers and

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business partners. The secure maintenance of this information is critical to our business and reputation. We believe companies have been
increasingly subject to a wide variety of security incidents, cyberattacks and other attempts to gain unauthorized access. These threats can
come from a variety of sources, all ranging in sophistication from an individual hacker to a state-sponsored attack. Cyber threats may be
generic,  or  they  may  be  custom-crafted  against  our  information  systems.  Cyberattacks  have  become  more  prevalent  and  much  harder  to
detect  and  defend  against.  Our  network  and  storage  applications  may  be  subject  to  unauthorized  access  by  hackers  or  breached  due  to
operator  error,  malfeasance  or  other  system  disruptions.  It  is  often  difficult  to  anticipate  or  immediately  detect  such  incidents  and  the
damage caused by such incidents. These data breaches and any unauthorized access or disclosure of our information or intellectual property
could  compromise  our  intellectual  property  and  expose  sensitive  business  information. A  data  security  breach  could  also  lead  to  public
exposure of personal information of our clinical trial patients, customers and others which could expose us to liability under federal or state
privacy laws. Cyberattacks can result in the theft of proprietary information which could be used to compete against us and could cause us to
incur  significant  remediation  costs,  result  in  product  development  delays,  disrupt  key  business  operations  and  divert  attention  of
management and key information technology resources. These incidents could also subject us to liability, expose us to significant expense
and cause significant harm to our reputation and business.

Significant disruptions of information technology systems, including cloud-based systems, or breaches of data security could adversely
affect our business.

Our business is increasingly dependent on critical, complex and interdependent information technology systems, including cloud-
based  systems,  to  support  business  processes  as  well  as  internal  and  external  communications.  Our  computer  systems,  and  those  of  our
partners  and  contractors,  are  potentially  vulnerable  to  breakdown,  malicious  intrusion  and  computer  viruses  that  may  result  in  the
impairment  of  key  business  processes.  Such  disruptions  and  breaches  of  security  could  have  a  material  adverse  effect  on  our  business,
financial condition and results of operations.

In addition, our data security and information technology systems, as well as those of our partners and contractors, are potentially
vulnerable  to  data  security  breaches,  whether  by  employees  or  others,  that  may  expose  sensitive  data  or  personal  information  to
unauthorized persons. Effective May 25, 2018, the European Union (“EU”) implemented the General Data Protection Regulation (“GDPR”)
a broad data protection framework that expands the scope of current EU data protection law to non-European Union entities that process, or
control the processing of, the personal information of EU subjects, including clinical trial data. The GDPR allows for the imposition of fines
and/or  corrective  action  on  entities  that  improperly  use  or  disclose  the  personal  information  of  EU  subjects,  including  through  a  data
security breach.

Also,  in  June  2018,  the  State  of  California  enacted  the  California  Consumer  Privacy  Act  of  2018  (“CCPA”),  which  became
effective in January 2020. The CCPA establishes a privacy framework for covered businesses, including an expansive definition of personal
information and data privacy rights for California residents. The CCPA includes a framework with potentially severe statutory damages and
private rights of action.  The CCPA requires covered companies to provide new disclosures to California consumers (as that word is broadly
defined in the CCPA), provide such consumers new ways to opt-out of certain sales of personal information, and allow for a new cause of
action for data breaches.  It remains unclear how the CCPA will be interpreted, but as currently written, it will likely impact our business
activities and exemplifies the vulnerability of our business to not only cyber threats but also the evolving regulatory environment related to
personal  data.   As  we  expand  our  operations,  the  CCPA  may  increase  our  compliance  costs  and  potential  liability.  Some  observers  have
noted that the CCPA could mark the beginning of a trend toward more stringent privacy legislation in the United States.  Other states are
beginning to pass similar laws. Accordingly, data security breaches experienced by us, our partners or contractors could lead to significant
fines, required corrective action, the loss of trade secrets or other intellectual property, public disclosure of sensitive clinical or commercial
data,  and  the  exposure  of  personally  identifiable  information  (including  sensitive  personal  information)  of  our  employees,  partners,  and
others. A  data  security  breach  or  privacy  violation  that  leads  to  disclosure  or  modification  of,  or  prevents  access  to,  patient  information,
including personally identifiable information or protected health information, could result in fines, increased costs or loss of revenue as a
result of:

·

·

harm to our reputation;

fines imposed on us by regulatory authorities;

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·

·

·

additional compliance obligations under federal, state or foreign laws;

requirements for mandatory corrective action to be taken by us; and

requirements to verify the correctness of database contents and otherwise subject us to liability under laws and regulations
that protect personal data.

If  we  are  unable  to  prevent  such  data  security  breaches  or  privacy  violations  or  implement  satisfactory  remedial  measures,  our
operations  could  be  disrupted,  and  we  may  suffer  loss  of  reputation,  financial  loss  and  other  regulatory  penalties  because  of  lost  or
misappropriated information, including sensitive patient data. In addition, these breaches and other inappropriate access can be difficult to
detect, and any delay in identifying them may lead to increased harm of the type described above. Moreover, the prevalent use of mobile
devices  that  access  confidential  information  increases  the  risk  of  data  security  breaches,  which  could  lead  to  the  loss  of  confidential
information,  trade  secrets  or  other  intellectual  property.  While  we  have  implemented  security  measures  to  protect  our  data  security  and
information technology systems, such measures may not prevent such events. We expect that there will continue to be new proposed laws,
regulations and industry standards relating to privacy and data protection in the United States, the EU and other jurisdictions, such as the
CCPA, which has been characterized as the first “GDPR-like” privacy statute enacted in the United States because it mirrors a number of the
key provisions in the GDPR. We cannot presently determine the impact such laws, regulations and standards will have on our business. In
any event, it is possible that governmental authorities will conclude that our business practices do not comply with current or future statutes,
regulations,  agency  guidance  or  case  law  involving  applicable  healthcare  or  privacy  laws,  including  the  GDPR,  in  light  of  the  lack  of
applicable precedent and regulations.

Shareholder  and  private  lawsuits,  and  potential  similar  or  related  lawsuits,  could  result  in  substantial  damages,  divert  management’s
time and attention from our business, and have a material adverse effect on our results of operations.

Securities-related  class  action  and  shareholder  derivative  litigation  has  often  been  brought  against  companies,  including  many
biotechnology companies, which experience volatility in the market price of their securities. This risk is especially relevant for us because
biotechnology  and  biopharmaceutical  companies  often  experience  significant  stock  price  volatility  in  connection  with  their  product
development programs.

It  is  possible  that  suits  will  be  filed,  or  allegations  received  from  stockholders,  naming  us  and/or  our  officers  and  directors  as
defendants.  These  potential  lawsuits  are  subject  to  inherent  uncertainties,  and  the  actual  defense  and  disposition  costs  will  depend  upon
many unknown factors. The outcome of these lawsuits is uncertain. We could be forced to expend significant resources in the defense of
these suits and we may not prevail. In addition, we may incur substantial legal fees and costs in connection with these lawsuits. It is possible
that we could, in the future, incur judgments or enter into settlements of claims for monetary damages. A decision adverse to our interests on
these actions could result in the payment of substantial damages, or possibly fines, and could have a material adverse effect on our cash
flow, results of operations and financial position.

Monitoring, initiating and defending against legal actions, including any currently pending litigation, are time-consuming for our
management, are likely to be expensive and may detract from our ability to fully focus our internal resources on our business activities. The
outcome of litigation is always uncertain, and in some cases could include judgments against us that require us to pay damages, enjoin us
from certain activities, or otherwise affect our legal or contractual rights, which could have a significant adverse effect on our business. In
addition, the inherent uncertainty of any future litigation could lead to increased volatility in our stock price and a decrease in the value of an
investment in our common stock.

Risks Related to Government Regulation

Even  after  FDA  approval,  a  product  may  be  subject  to  additional  testing  or  significant  marketing  restrictions,  its  approval  may  be
withdrawn or it may be removed voluntarily from the market.

Even if our licensees receive regulatory approval for our product candidates, our licensees will be subject to ongoing regulatory

oversight and review by the FDA and other regulatory entities. The FDA, the European Medicines

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Agency (“EMA”), or another regulatory agency may impose, as a condition of the approval, ongoing requirements for post-approval studies
or  post-approval  obligations,  including  additional  research  and  development  and  clinical  trials,  and  the  FDA,  EMA  or  other  regulatory
agency subsequently may withdraw approval based on these additional trials or obligations.

Even for approved products, the FDA, EMA or other regulatory agency may impose significant restrictions on the indicated uses,
conditions for use, labeling, advertising, promotion, marketing and production of such product. In addition, the labeling, packaging, adverse
event reporting, storage, advertising, promotion and record-keeping for our products are subject to extensive regulatory requirements.

Furthermore,  marketing  approval  of  a  product  may  be  withdrawn  by  the  FDA,  the  EMA  or  another  regulatory  agency  or  such
product may be withdrawn voluntarily by our partners based, for example, on subsequently arising safety concerns. The FDA, EMA and
other agencies also may impose various civil or criminal sanctions for failure to comply with regulatory requirements, including withdrawal
of product approval.

Healthcare reform measures and other statutory or regulatory changes could adversely affect our business.

The United States and some foreign jurisdictions have enacted or are considering a number of legislative and regulatory proposals
to change the healthcare system in ways that could affect our licensees’ ability to sell our products and any products as to which we own
milestone  and  royalty  interests,  if  approved,  profitably. Among  policy  makers  and  payors  in  the  United  States  and  elsewhere,  there  is
significant interest in promoting changes in healthcare systems with the stated goals of containing healthcare costs, improving quality and
expanding access. In the United States, the pharmaceutical industry has been a particular focus of these efforts and has been significantly
affected  by  major  legislative  initiatives. For  example,  in  March  2010,  the  United  States  Congress  enacted  the  Patient  Protection  and
Affordable  Care Act,  as  amended  by  the  Health  Care  and  Education  Reconciliation Act,  or  collectively  the ACA,  which  substantially
changed the way healthcare is financed by both governmental and private insurers, and continues to significantly impact the United States
pharmaceutical industry. There remain judicial and Congressional challenges to certain aspects of the ACA, as well as efforts by the Trump
administration to repeal or replace certain aspects of the ACA. Since January 2017, President Trump has signed two Executive Orders and
other directives designed to delay the implementation of certain provisions of the ACA or otherwise circumvent some of the requirements
for health insurance mandated by the ACA. Concurrently, Congress has considered legislation that would repeal or repeal and replace all or
part  of  the ACA.  While  Congress  has  not  passed  comprehensive  repeal  legislation,  several  bills  affecting  the  implementation  of  certain
taxes  under  the ACA  have  been  signed  into  law.  The  Tax  Cuts  and  Jobs Act  of  2017,  or  Tax Act,  included  a  provision  which  repealed,
effective  January  1,  2019,  the  tax-based  shared  responsibility  payment  imposed  by  the ACA  on  certain  individuals  who  fail  to  maintain
qualifying health coverage for all or part of a year that is commonly referred to as the “individual mandate”. In addition, the 2020 federal
spending package permanently eliminates, effective January 1, 2020, the ACA-mandated “Cadillac” tax on high-cost employer-sponsored
health coverage and medical device tax and, effective January 1, 2021, also eliminates the health insurer tax. In addition, the ACA has also
been subject to judicial challenge. On December 14, 2018, a Texas U.S. District Court Judge ruled that the ACA is unconstitutional in its
entirety because the “individual mandate” was repealed by Congress as part of the Tax Act. Additionally, on December 18, 2019, the U.S.
Court of Appeals for the 5th Circuit upheld the District Court ruling that the individual mandate was unconstitutional and remanded the case
back to the District Court to determine whether the remaining provisions of the ACA are invalid as well.  It is unclear how this decision,
future  decisions,  subsequent  appeals,  and  other  efforts  to  repeal  and  replace  the ACA  will  impact  the ACA  and  our  and  our  licensees’
businesses.

An  expansion  in  the  government’s  role  in  the  U.S.  healthcare  industry  may  cause  general  downward  pressure  on  the  prices  of
prescription drug products, lower reimbursements for providers, and reduced product utilization, any of which could adversely affect our
business  and  results  of  operations.  Moreover,  there  has  been  heightened  governmental  scrutiny  in  the  United  States  of  pharmaceutical
pricing practices in light of the rising cost of prescription drugs and biologics. Such scrutiny has resulted in several recent congressional
inquiries and proposed and enacted federal and state legislation designed to, among other things, bring more transparency to product pricing,
review the relationship between pricing and manufacturer patient programs, and reform government program reimbursement methodologies
for products. We cannot know what form any such new legislation may take or the market’s perception of how such legislation would affect
us. Any reduction in reimbursement from government programs may result in a similar reduction in payments from private

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payors.  The  implementation  of  cost  containment  measures  or  other  healthcare  reforms  may  prevent  our  licensees  from  being  able  to
generate  revenue,  attain  profitability,  develop,  or  commercialize  our  current  product  candidates  and  those  for  which  we  may  receive
regulatory approval in the future.

We  and  our  licensees  are  subject  to  various  state  and  federal  healthcare-related  laws  and  regulations  that  may  impact  the
commercialization of our product candidates or third-party product candidates for which we possess milestone or royalty rights or could
subject us to significant fines and penalties.

Our  operations  may  be  directly  or  indirectly  subject  to  various  state  and  federal  healthcare  laws,  including  the  federal  Anti-
Kickback Statute, the federal False Claims Act and state and federal data privacy and security laws. These laws may impact, among other
things, the commercial operations for any of our product candidates that may be approved for commercial sale.

The  federal Anti-Kickback  Statute  prohibits,  among  other  things,  persons  and  entities  from  knowingly  and  willfully  soliciting,
offering, receiving or providing any remuneration, directly or indirectly, in cash or in kind,  in exchange for or to induce either the referral of
an individual for, or the furnishing or arranging for the purchase, lease, or order of a good or service for which payment may be made under
a federal healthcare program, such as the Medicare and Medicaid programs. The ACA modified the federal Anti-Kickback Statute’s intent
requirement so that  a  person  or  entity  no  longer  needs  to  have  actual  knowledge  of  the  statute  or  the  specific  intent  to  violate  it  to  have
committed  a  violation.  In  addition,  several  courts  have  interpreted  the  statute’s  intent  requirement  to  mean  that  if  any  one  purpose  of  an
arrangement involving remuneration is to induce referrals of federal healthcare covered business, the statute has been violated. The Anti-
Kickback Statute is broad and prohibits many arrangements and practices that are lawful in businesses outside of the healthcare industry.

The  federal  false  claims  laws,  including  the  False  Claims Act,  and  civil  monetary  penalties  laws  prohibit,  among  other  things,
persons and entities from knowingly filing, or causing to be filed, a false claim to, or the knowing use of false statements to obtain payment
from the federal government. Certain suits filed under the False Claims Act, known as “qui tam” actions, can be brought by any individual
on behalf of the government and such individual, commonly known as a “whistleblower,” may share in any amounts paid by the entity to
the  government  in  fines  or  settlement.  The  filing  of  qui  tam  actions  has  caused  a  number  of  pharmaceutical,  medical  device  and  other
healthcare companies to have to defend and/or settle a False Claims Act action.

The  Federal  Health  Insurance  Portability  and Accountability Act  of  1996  (“HIPAA”)  created  new  federal  criminal  statutes  that
prohibit,  among  other  things,  executing  a  scheme  to  defraud  any  healthcare  benefit  program,  including  a  private  payor,  or  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, health care benefits, items or services.

HIPAA,  as  amended  by  the  Health  Information  Technology  and  Clinical  Health  Act,  and  its  implementing  regulations,  also
imposes  certain  requirements  relating  to  the  privacy,  security  and  transmission  of  individually  identifiable  health  information  by  entities
subject  to  the  law,  such  as  certain  healthcare  providers,  health  plans,  and  healthcare  clearinghouses  as  well  as  their  respective  business
associates that perform certain functions or activities that involve the use or disclosure of protected health information on their behalf.  

Many states also have adopted laws similar to each of the federal laws described above, some of which apply to healthcare items or
services reimbursed by any source, not only federal healthcare programs, such as the Medicare and Medicaid programs. In addition, some
states have laws that require pharmaceutical companies to comply with the pharmaceutical industry’s voluntary compliance guidelines and
the  applicable  compliance  guidance  promulgated  by  the  federal  government.  Additionally,  certain  state  and  local  laws  require  the
registration of pharmaceutical sales representatives, restrict payments that may be made to healthcare providers and other potential referral
sources, and require manufacturers to report information related to payments and other transfers of value to physicians and other healthcare
providers. Further, some states have laws governing the privacy and security of health information in certain circumstances, many of which
are  not  preempted  by  HIPAA  and  differ  from  each  other  in  significant  ways  and  may  not  have  the  same  effect,  thus  complicating
compliance efforts.

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Because of the breadth of these laws, and the narrowness of the statutory exceptions and regulatory safe harbors available, it is

possible that some of our or our licensees’ business activities could be subject to challenge under one or more of such laws.

If we or our licensees are found to be in violation of any of the laws and regulations described above or other applicable state and
federal healthcare laws, we or our licensees may be subject to penalties, including significant civil, criminal, and administrative penalties,
damages, fines, disgorgement, imprisonment, integrity oversight and reporting obligations, reputational harm, exclusion from government
healthcare  reimbursement  programs  and  the  curtailment  or  restructuring  of  our  or  our  licensees’  operations,  any  of  which  could  have  a
material  adverse  effect  on  our  business  and  results  of  operations.  In  addition,  we  and  our  licensees  may  be  subject  to  certain  analogous
foreign laws and violations of such laws could result in significant penalties.

As  we  or  our  licensees  do  more  business  internationally,  we  will  be  subject  to  additional  political,  economic  and  regulatory
uncertainties.

We or our licensees may not be able to operate successfully in any foreign market. We believe that because the pharmaceutical
industry is global in nature, international activities will be a significant part of future business activities and when and if we or our licensees
are able to generate income, a substantial portion of that income will be derived from product sales and other activities outside the United
States.  Foreign  regulatory  agencies  often  establish  standards  different  from  those  in  the  United  States,  and  an  inability  to  obtain  foreign
regulatory approvals on a timely basis could put us at a competitive disadvantage or make it uneconomical to proceed with a product or
product candidate’s development. International sales may be limited or disrupted by many factors, including without limitation:

·

·

·

·

·

·

·

imposition of government controls;

export license requirements;

political or economic instability;

trade restrictions;

changes in tariffs;

restrictions on repatriating profits;

exchange rate fluctuations; and

·

withholding and other taxation.

Item 1B.       Unresolved Staff Comments 

None.

Item 2.   Properties 

We  currently  lease  one  building  that  houses  our  corporate  headquarters  in  Emeryville,  California.  The  building  lease  expires  in
February 2023, and total net lease liability from January 2020 until expiration of the lease is $0.6 million. We believe that our facilities are
adequate to meet our requirements for the near term.

In December 2019, we entered into two Lease Termination Agreements to early terminate our two operating leases in Berkeley,
California. As a result of the lease terminations we were also released from all financial obligations under our sublease agreements .   We
agreed  to  pay an early termination fee of $1.6 million in total and recognized a lease termination loss of $0.4 million for the year ended
December 31, 2019.

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Item 3.   Legal Proceedings 

None.

Item 4.   Mine Safety Disclosures 

Not applicable.

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PART II 

Item 5.   Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity  Securities

Market for Registrant’s Common Equity

Our  common  stock  trades  on  The  Nasdaq  Global  Market  tier  of  the  Nasdaq  Stock  Market  LLC  (“Nasdaq”)  under  the  symbol
“XOMA.” On March 5, 2020, there were 201 stockholders of record of our common stock, one of which was Cede & Co., a nominee for
Depository Trust Company (“DTC”). All of the shares of our common stock held by brokerage firms, banks and other financial institutions
as  nominees  for  beneficial  owners  are  deposited  into  participant  accounts  at  DTC  and  are  therefore  considered  to  be  held  of  record  by
Cede & Co. as one stockholder.

Dividend Policy

We  have  not  paid  dividends  on  our  common  stock.  We  currently  intend  to  retain  any  earnings  for  use  in  the  operations  of  our

business. We, therefore, do not anticipate paying cash dividends on our common stock in the foreseeable future.

Recent Sales of Unregistered Securities

Except as previously reported in our quarterly reports on Form 10‑Q and current reports on Form 8‑K filed with the Securities and
Exchange  Commission  (“SEC”),  during  the  year  ended  December  31,  2019,  there  were  no  unregistered  sales  of  equity  securities  by  us
during the year ended December 31, 2019.

Item 6.   Selected Consolidated Financial Data 

We  are  a  smaller  reporting  company  as  defined  by  Rule  12b‑2  of  the  Securities  Exchange  Act  of  1934,  as  amended,  or  the

Exchange Act, and are not required to provide the information required under this item.

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Item 7.   Management’s Discussion and Analysis of Financial Condition and Results of Operations 

Overview

We  are  a  biotech  royalty  aggregator  with  a  sizable  portfolio  of  economic  rights  to  future  potential  milestone  and  royalty  payments
associated  with  partnered  pre-commercial  therapeutic  candidates.  Our  portfolio  was  built  through  licensing  our  proprietary  products  and
platforms from our legacy discovery and development business, combined with acquisitions of rights to future milestones and royalties that
we have made since our royalty aggregator business model was implemented in 2017. We expect that most of our future revenue will be
based on payments we may receive for milestones and royalties related to these programs.

Significant Developments

Rights Offering

In December 2019, we commenced a rights offering (the “2019 Rights Offering”) to raise $22.0 million through the distribution of
subscription rights to holders of our common stock and Series X and Series Y preferred stock. In December 2019, we sold 1,000,000 shares
of our common stock at the subscription price of $22.00 per share to investors for aggregate gross proceeds of $22.0 million. In total, BVF
purchased 845,463 shares of common stock pursuant to the exercise of subscriptions in the rights offering.

Palobiofarma, S.L.

In September 2019, we entered into a Royalty Purchase Agreement (the “Palo Royalty Purchase Agreement”) with Palobiofarma,
S.L. (“Palo”). Pursuant to the Palo Royalty Purchase Agreement, we acquired the rights to potential royalty payments in low single digit
percentages  of  aggregate  net  sales  associated  with  six  drug  candidates  in  various  clinical  development  stages,  targeting  the  adenosine
pathway  with  potential  applications  in  solid  tumors,  non-Hodgkin’s  lymphoma,  asthma/chronic  obstructive  pulmonary  disease,
inflammatory bowel disease, idiopathic pulmonary fibrosis, lung cancer, psoriasis and nonalcoholic steatohepatitis and other indications (the
“Palo Licensed Products”) that are being developed by Palo. Novartis Pharma AG (“Novartis”) is a development partner on NIR178, one of
the Palo Licensed Products, and NIR178 is being developed pursuant to a license agreement between Palo and Novartis. Under the terms of
the Palo Royalty Purchase Agreement, we paid Palo $10.0 million for the rights to potential royalty payments on future sales of the Palo
Licensed Products.

Janssen Biotech

In August 2019, our portfolio of potential future royalty and milestone payments increased with the addition of Janssen Biotech, Inc.
(“Janssen”) drug candidates for which XOMA may receive future milestone and royalty payments. Janssen made a one-time payment of
$2.5  million  to  us  and  we  are  entitled  to  receive  milestone  payments  of  up  to  $3.0  million  for  each  drug  candidate  upon  Janssen’s
achievement  of  certain  clinical  development  and  regulatory  approval  events.  Upon  commercialization,  we  are  eligible  to  receive  0.75%
royalty on net sales of each product. Janssen’s obligation to pay royalties with respect to a particular product and country will continue until
the eighth-year and sixth-month anniversary of the first commercial sale of the product in such country.

Aronora

On April 7, 2019 we entered into a Royalty Purchase Agreement with Aronora, Inc. (the “Aronora Royalty Purchase Agreement”), a
private research and development company headquartered in Portland, Oregon. Under the agreement, we purchased from Aronora the rights
to potential royalty and a portion of upfront, milestone, and option payments associated with five anti-thrombotic hematology drug products
in  development:  three  candidates  subject  to Aronora’s  collaboration  with  Bayer  Pharma AG  (“Bayer”)  (the  “Bayer  Products”)  and  two
additional early stage candidates (the “non-Bayer Products”).

Under the terms of the agreement, we made a $6.0 million upfront payment to Aronora when the transaction closed on June 26, 2019,
and  made  an  additional  $3.0  million  payment  in  September  2019  for  the  three  Bayer  Products  that  were  active  as  of  September  1,
2019.  Pursuant to the Aronora Royalty Purchase Agreement, if we receive $250.0 million in cumulative royalties on net sales per product,
we will be required to pay associated tiered milestones payments to Aronora

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in  an  aggregate  amount  of  up  to  $85.0  million  per  product.  The  tiered  milestones  are  based  upon  various  royalty  tiers  prior  to  reaching
$250.0 million in cumulative royalties on net sales per product. We will retain royalties per product in excess of $250.0 million. We will
receive, on average, low single-digit royalties on future sales of the Bayer Products and 10% of all future developmental, regulatory and
sales milestones related to the Bayer Products. In addition, we purchased from Aronora the right to receive low-single digit percentage of
net  sales  of  the  non-Bayer  Products  and  10%  of  all  future  payments,  including  upfront  payments,  option  payments  and  developmental,
regulatory and sales milestone payments on potential future sales of the non-Bayer Products.

Bioasis

On  February  25,  2019,  we  entered  into  a  Royalty  Purchase  Agreement  with  Bioasis  Technologies,  Inc.  (the  “Bioasis  Royalty
Agreement”)  and  certain  affiliates  (collectively  “Bioasis”).  Under  the  agreement,  we  purchased  potential  future  milestone,  royalty  and
option fee payment rights from Bioasis for product candidates that are being developed pursuant to a License Agreement between Bioasis
and Prothena Biosciences Limited. Under the terms of the agreement, we paid Bioasis an upfront cash payment of $0.3 million and will be
required to make contingent future cash payments of up to $0.2 million to Bioasis if and when the licensed product candidates reach certain
development milestones. In addition, we were granted an option to purchase a 1% royalty right on the next two license agreements entered
into between Bioasis and third-party licensees subject to certain payments and conditions as well as a right of first negotiation on subsequent
Bioasis license agreements with third parties.

Rezolute

In December 2017, we entered into a license and common stock purchase agreement with Rezolute, which was amended on March
30, 2018 and further amended on January 7, 2019. The license agreement was amended to eliminate the requirement that equity securities be
issued  to  us  upon  the  closing  of  the  Qualified  Financing  (as  defined  in  the  license  agreement)  and  to  replace  it  with  a  requirement  that
Rezolute:  (1)  make  five  cash  payments  to  us  totaling  $8.5  million  following  the  closing  of  a  Qualified  Financing  on  or  before  specified
staggered  future  dates  through  September  2020  (the  “Future  Cash  Payments”);  and  (2)  provide  for  early  payment  of  the  Future  Cash
Payments (only until $8.5 million is reached) by making cash payments to us equal to 15% of the net proceeds of each future financing
following the closing of the Qualified Financing, with such payments to be credited against any remaining unpaid Future Cash Payments in
reverse order of their future payment date. The common stock purchase agreement was amended to remove certain provisions related to the
issuance of equity to us in accordance with the new provisions regarding the Future Cash Payments in the license agreement.

On  January  30,  2019,  Rezolute  closed  a  preferred  stock  financing  activity  for  gross  proceeds  of  $25.0  million,  which  triggered  the
Qualified  Financing  defined  under  the  amended  common  stock  purchase  agreement  between  us  and  Rezolute. As  such,  pursuant  to  the
amended  terms  of  the  agreement  with  Rezolute,  we  received  cash  of  $5.5  million.  In  addition,  in  February  2019,  we  received  the
reimbursable technology transfer expenses of $0.3 million from Rezolute. On June 1, 2019, Rezolute’s option to obtain a license to one of
our preclinical monoclonal antibody fragments expired unexercised. 

In July and August 2019, Rezolute closed two common stock financing events for total net proceeds of $22.6 million. As such, we
received  15%  of  the  net  proceeds,  or  $3.4  million,  which  was  credited  against  the  portion  of  Future  Cash  Payments  due  in  2020.  In
September and December 2019, we received the $2.5 million Future Cash Payments due in 2019.

Silicon Valley Bank Loan Agreement

In May 2018, we executed a Loan and Security Agreement (the “Loan Agreement”) with Silicon Valley Bank (“SVB”). Under the
Loan Agreement, upon our request, SVB may make advances available to us up to $20.0 million. In March 2019, we and SVB amended the
Loan Agreement to extend the draw period from March 31, 2019 to March 31, 2020. In connection with the amendment, we issued a second
warrant to SVB which is exercisable in whole or in part for up to an aggregate of 4,845 shares of common stock with an exercise price of
$14.71 per share. The warrant may be exercised on a cashless basis and is exercisable within 10 years from the date of issuance or upon the
consummation of certain acquisitions of XOMA. As of December 31, 2019, we had an outstanding principal balance of $16.1 million under
the Loan Agreement.

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Lease Termination

th
In December 2019, we entered into a Lease Termination Agreement with each of the 7  Street Properties II (“7  Street LP”) and 7
Street Property General Partnership (“7   Street  GP”)  to  early  terminate  the  Company’s  two  operating  leases  in  Berkeley,  California.  The
Company  no  longer  maintains  operations  at  the  real  property  subject  to  either  of  the  leases.  Based  on  the  terms  of  each  agreement,  the
Company surrendered the two leased facilities and was fully released from any further base rent or other payment obligations. In addition,
the Company’s rights and obligations under its sublease arrangements for the two facilities in Berkeley, California transferred to 7  Street
LP  and  7   Street  GP  and  XOMA  was  released  from  all  financial  obligations  under  its  sublease  agreements.  We  agreed  to  pay  early
termination fees to 7  Street LP and 7  Street GP of $0.5 million and $1.1 million, respectively.

th

th

th

th

th

th

th

Critical Accounting Estimates

The  accompanying  discussion  and  analysis  of  our  financial  condition  and  results  of  operations  are  based  upon  our  consolidated
financial statements and the related disclosures, which have been prepared in accordance with generally accepted accounting principles in
the United States. The preparation of these consolidated financial statements requires us to make estimates, assumptions and judgments that
affect  the  reported  amounts  in  our  consolidated  financial  statements  and  accompanying  notes.  On  an  ongoing  basis,  we  evaluate  our
estimates,  assumptions  and  judgments  described  below  that  have  the  greatest  potential  impact  on  our  consolidated  financial  statements,
including  those  related  to operating  lease  right-of-use  assets  and  liabilities, legal  contingencies,  contingent  considerations  under  royalty
purchase agreements, royalty receivables, revenue recognized under units-of-revenue method, income taxes and stock-based compensation.
We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances,
the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from
other sources. Accounting assumptions and estimates are inherently uncertain and actual results may differ materially from these estimates
under different assumptions or conditions.

While our significant accounting policies are more fully described in Note 2 to the consolidated financial statements, we believe
the following policies to be the most critical to an understanding of our financial condition and results of operations because they require us
to make estimates, assumptions and judgments about matters that are inherently uncertain.

Revenue Recognition

Effective  January  1,  2018,  we  adopted  Accounting  Standards  Codification  (“ASC”)  Topic  606, Revenue  from  Contracts  with
Customers ("ASC 606") using the modified retrospective transition method and applied the standard only to contracts that were still active or
in  place  at  that  date.  Also,  as  permitted,  we  applied  the  practical  expedient  under  ASC  606  which  permits  us  to  treat  all  contract
modifications  that  occurred  prior  to  the  adoption  in  aggregate  when  determining  the  performance  obligations,  transaction  price  and  its
allocation.  Except  for  the  license  agreement  with  Rezolute,  we  did  not  have  any  other  contracts  with  customers  for  which  we  had  not
completed our performance obligations, as of the adoption date January 1, 2018. As of adoption, the license agreement with Rezolute was
not considered a contract under ASC 606 as it was not probable that we would collect substantially all of the consideration to which we
were  entitled  in  exchange  for  the  goods  or  services  that  were  transferred  to  Rezolute  and  there  was  no  consideration  exchanged  upon
execution of the arrangement or as of January 1, 2018. Thus, we determined that the adoption of ASC 606 did not have a financial impact
on our consolidated financial statements. In addition, the adoption of ASC 606 had no material impact for tax purposes.

We have certain license arrangements in the scope of ASC 606. The terms of these agreements may contain multiple performance
obligations,  which  primarily  include  transfer  of  our  licenses.  Prior  to  recognizing  revenue,  we  make  estimates  of  the  transaction  price,
including variable consideration that is subject to a constraint. Amounts of variable consideration are included in the transaction price to the
extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur and when the uncertainty
associated  with  the  variable  consideration  is  subsequently  resolved.  Variable  consideration  may  include  payments  based  upon  the
achievement  of  specified  milestones,  and  royalty  payments  based  on  product  sales  derived  from  the  license  agreements.  The  royalty
payments will be recognized as revenue when the related sales occur, as far as there are no unsatisfied performance obligations remaining. If
there are

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multiple  distinct  performance  obligations,  we  allocate  the  transaction  price  to  each  distinct  performance  obligation  based  on  its  relative
standalone selling price. All licenses we grant to customers are unique, as each uses a specific technology of XOMA or is geared towards a
specific unique product candidate. Thus, there is no observable evidence of standalone selling price for the licenses. The standalone selling
price is generally determined using a valuation approach based on discounted cash flow analysis. For licenses that are bundled with other
promises,  we  utilize  judgement  to  assess  the  nature  of  the  combined  performance  obligation  to  determine  whether  the  combined
performance obligation is satisfied over time or at a point in time. Under our license agreements, the nature of the combined performance
obligation is the granting of licenses to the customers. As such, we recognize revenue related to the combined performance obligation upon
transfer of the license to the customers or completion of the transfer of related materials and services (i.e., point in time).

Sale of Future Revenue Streams

We have sold our rights to receive certain milestones and royalties on product sales. In the circumstance where we have sold our
rights to future milestones and royalties under a license agreement and also maintain limited continuing involvement in the arrangement (but
not  significant  continuing  involvement  in  the  generation  of  the  cash  flows  that  are  due  to  the  purchaser),  we  defer  recognition  of  the
proceeds  we  received  for  the  sale  of  milestone  or  royalty  streams  and  recognize  such  unearned  revenue  as  revenue  under  the  units-of-
revenue method over the life of the underlying license agreement. Under the units-of-revenue method, amortization for a reporting period is
calculated by computing a ratio of the proceeds received from the purchaser to the total payments expected to be made to the purchaser over
the term of the agreement, and then applying that ratio to the period’s cash payment.

Estimating the total payments expected to be received by the purchaser over the term of such arrangements requires management to
use subjective estimates and assumptions. Changes to our estimate of the payments expected to be made to the purchaser over the term of
such arrangements could have a material effect on the amount of revenues recognized in any particular period.

Stock-based Compensation

Stock-based compensation expense for stock options and other stock awards is estimated at the grant date based on the award’s fair
value-based measurement. The valuation of stock-based compensation awards is determined at the date of grant using the Black-Scholes
option pricing model (the “Black-Scholes Model”). This model requires highly complex and subjective inputs, such as the expected term of
the  option  and  expected  volatility.  These  inputs  are  subjective  and  generally  require  significant  analysis  and  judgment  to  develop.  Our
current estimate of volatility is based on the historical volatility of our stock price. To the extent volatility in our stock price increases in the
future,  our  estimates  of  the  fair  value  of  options  granted  in  the  future  could  increase,  thereby  increasing  stock-based  compensation  cost
recognized in future periods. To establish an estimate of expected term, we consider the vesting period and contractual period of the award
and  our  historical  experience  of  stock  option  exercises,  post-vesting  cancellations  and  volatility.  The  risk-free  rate  is  based  on  the  yield
available on United States Treasury zero-coupon issues. Forfeitures are recognized as they occur.

We  review  our  valuation  assumptions  quarterly  and,  as  a  result,  we  likely  will  change  our  valuation  assumptions  used  to  value
stock-based  awards  granted  in  future  periods.  In  the  future,  as  additional  empirical  evidence  regarding  these  input  estimates  becomes
available,  we  may  change  or  refine  our  approach  of  deriving  these  input  estimates.  These  changes  could  impact  our  fair  value-based
measurement of stock options granted in the future. Changes in the fair value-based measurement of stock awards could materially impact
our operating results.

For  our  stock  options  and  service-based  awards,  we  recognize  compensation  expense  on  a  straight-line  basis  over  the  award’s
vesting period. In 2017, we granted equity awards with performance-based conditions to certain employees. The actual number of equity
awards  earned  and  eligible  to  vest  was  determined  based  on  a  specified  level  of  achievement  against  a  Board-approved  budget  and
operational targets. For awards with performance-based conditions, at the point that it becomes probable that the performance conditions
will be met, we record a cumulative catch-up of the expense from the grant date to the current date, and we then amortize the remainder of
the expense over the remaining service period. Management evaluates when the achievement of a performance-based condition is probable
based on the expected satisfaction of the performance conditions as of the reporting date. The amount of stock-based compensation expense
recognized during a period is based on the value of the portion of the awards that are ultimately expected to vest.

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Purchase of Rights to Future Milestones and Royalties

We have purchased rights to receive a portion of certain future developmental, regulatory and commercial sales milestones, and
royalties on sales of products currently in clinical development. We acquired such rights from various entities and recorded the amount paid
for these rights as long-term royalty receivables. We have accounted for the purchased rights as a financial asset in accordance with ASC
310, Receivables.

We  account  for  milestone  and  royalty  rights  related  to  developmental  pipeline  products  on  a  non-accrual  basis  using  the  cost
recovery  method.  These  developmental  pipeline  products  are  non-commercialized,  non-approved  products  that  require  FDA  or  other
regulatory approval, and thus have uncertain cash flows. The related receivable balance is classified as noncurrent since no payments are
probable to be received in the near term. Under the cost recovery method, any milestone or royalty received is recorded as a direct reduction
of  the  recorded  receivable  balance.  When  the  recorded  receivable  balance  has  been  fully  collected,  any  additional  amounts  collected  are
recognized as revenue.

We  review  any  impairment  indicators  and  changes  in  expected  recoverability  of  the  long-term  receivable  asset  regularly.  If
expected future cash flows discounted to the current period are less than the carrying value of the asset, we will record impairment. The
impairment will be recognized by reducing the financial asset to an amount that represents the present value of the most recent estimate of
cash flows. No impairment was recorded as of December 31, 2019.

Leases

On January 1, 2019, we adopted ASC Topic 842, Leases (“ASC 842”) using the optional transition method and applied the standard
only to leases that existed at that date. Under the optional transition method, we do not need to restate the comparative periods in transition
and will continue to present financial information and disclosures for periods before January 1, 2019 in accordance with ASC Topic 840.
We have elected the package of practical expedients allowed under ASC Topic 842, which permits us to account for our existing operating
leases as operating leases under the new guidance, without reassessing our prior conclusions about lease identification, lease classification
and initial direct cost. As a result of the adoption of the new lease accounting guidance, we recognized on January 1, 2019 operating lease
right-of-use assets of $7.4 million and operating lease liabilities of $9.2 million.

We determined the initial classification and measurement of our right-of-use assets and lease liabilities at the lease commencement
date  and  thereafter  if  modified.  The  lease  term  includes  any  renewal  options  and  termination  options  that  we  are  reasonably  certain  to
exercise.  The  present  value  of  lease  payments  is  determined  by  using  the  interest  rate  implicit  in  the  lease,  if  that  rate  is  readily
determinable; otherwise, we use our incremental borrowing rate. The incremental borrowing rate is determined by using the rate of interest
that we would pay to borrow on a collateralized basis an amount equal to the lease payments for a similar term and in a similar economic
environment.

Rent  expense  for  operating  leases  is  recognized  on  a  straight-line  basis,  unless  the  right-of-use  asset  has  been  impaired,  over  the
reasonably  certain  lease  term  based  on  the  total  lease  payments  and  is  included  in  operating  expenses  in  the  consolidated  statements  of
operations and comprehensive loss.

For operating leases that reflect impairment, we will recognize the amortization of the right-of-use asset on a straight-lined basis over
the  remaining  lease  term  with  rent  expense  still  included  in  operating  expenses  in  the  consolidated  statements  of  operations  and
comprehensive loss.

For all leases, rent payments that are based on a fixed index or rate at the lease commencement date are included in the measurement

of lease assets and lease liabilities at the lease commencement date.

We  have  elected  the  practical  expedient  to  not  separate  lease  and  non-lease  components.  Our  non-lease  components  are  primarily
related to property maintenance, which varies based on future outcomes, and thus differences to original estimates are recognized in rent
expense when incurred.

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Results of Operations

Revenues

Total revenues for the years ended December 31, 2019, and 2018 were as follows (in thousands):

Revenue from contracts with customers
Revenue recognized under units-of-revenue method
Total revenues

Revenue from Contracts with Customers

Year Ended
December 31, 

2019
  $ 17,276   $

1,094  

  $ 18,370   $

2018
     Change
5,068   $ 12,208
863
5,299   $ 13,071

231  

Revenue from contracts with customers includes upfront fees, milestone payments and royalties related to the out-licensing of our
product  candidates  and  technologies.  The  primary  components  of  revenue  from  contracts  with  customers  in  2019  was  $14.0  million
recognized under our license agreement and common stock purchase agreement with Rezolute and $2.5 million in revenue earned from a
one-time payment under our license agreement with Janssen. The primary components of revenue from contracts with customers in 2018
was $1.8 million recognized under our license agreement and common stock purchase agreement with Rezolute, $1.4 million in milestone
revenue earned under our license agreement with Janssen, and $0.8 million in milestone revenue earned under our license agreement with
Compugen.

Revenue recognized under units-of-revenue method

Revenues in 2019 and 2018 include the amortization of unearned revenue of $1.1 million and $0.2 million, respectively, from the
sale of royalty interests to HealthCare Royalty Partners II, L.P. (“HRCP”). The increase in 2019 compared with 2018 was due to increased
sales of products underlying the agreements with HCRP.

The generation of future revenues related to licenses, milestones, and royalties is dependent on the achievement of milestones or

product sales by our existing licensees.

Research and Development Expenses

Research and development (“R&D”) expenses were $1.3 million in 2019, compared with $1.7 million in 2018. The decrease of $0.4 million
in 2019, as compared with 2018, was primarily due to a reduction in headcount of R&D employees. We expect R&D expense in 2020 to be
reduced as compared with 2019.

General and Administrative Expenses

General and administrative (“G&A”) expenses include salaries and related personnel costs, facilities costs and professional fees. In
2019, G&A expenses were $21.0 million compared with $18.6 million in 2018. The increase of $2.4 million in 2019 as compared with 2018
was  primarily  due  to  a  $0.9  million  increase  for  expenses  incurred  in  connection  with  a  separation  agreement  with  our  Chief  Business
Officer, which included $0.5 million in stock-based compensation expense for modifications to her vested stock options and $0.4 million in
separation benefits, an increase of $0.7 million in stock-based compensation excluding the option modifications, a $0.6 million increase in
common area maintenance charges related to our legacy leases and a $0.4 million increase in expenses related to investor communications.

To support our royalty aggregator business model, we engage third parties to assist in our evaluation of potential acquisitions of
milestone and royalty streams. While we expect our personnel related costs to be comparable in 2020 with 2019, consulting expenses may
increase in response to an increase in the volume of acquisition targets evaluated or

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completed.  In  addition,  we  expect  a  decrease  in  facilities  costs  due  to  the  early  termination  in  December  2019  of  our  legacy  leases  in
Berkeley, California.

Restructuring and Other Charges

From August 2015 through June 2018, we implemented a series of restructuring efforts ultimately resulting in the implementation
of our royalty aggregator business model.  During the year ended December 31, 2018, we completely vacated both of our leased facilities in
Berkeley,  California  and  met  the  criteria  of  a  cease-use  date.  We  recorded  a  lease-related  restructuring  liability  of  $1.4  million  as  of
December  31,  2018,  which  was  adjusted  for  the  remaining  balance  of  deferred  rent  of  $0.7  million.  This  resulted  in  us  recording  lease-
related restructuring charges of $1.3 million for the year ended December 31, 2018. In addition, in connection with a sublease agreement
executed in April 2018, we recognized a loss on the sublease of $0.6 million for the year ended December 31, 2018. 

Upon  implementation  of ASC  842  on  January  1,  2019,  we  derecognized  the  lease-related  restructuring  and  sublease  liabilities
related to the two facilities in Berkeley, California. In December 2019, we early terminated the two operating leases in Berkeley, California
and were fully released from any further base rent or other payment obligations.

Other Income (Expense)

Interest Expense

Amortization of debt issuance costs and discounts are included in interest expense. Interest expense is shown below for the years

ended December 31, 2019 and 2018 (in thousands):

Year Ended
December 31, 

SVB loan
Novartis note
Other
Total interest expense

2019
1,207   $
706  
 6  
1,919   $

  $

  $

2018

     Change
949
79
(31)
997

258  
627  
37  
922   $

The increase in interest expense compared with 2018 is primarily due to the increase in the outstanding loan balance with SVB. On
May 7, 2018, we executed a loan agreement with SVB and in September of 2018 we borrowed $7.5 million. In June and September of 2019,
in connection with the Aronora and Palo Royalty Purchase Agreements, we borrowed an additional $9.5 million in aggregate.  We expect
our interest expense to increase in 2020 related to the outstanding SVB loan balance and increased interest rate, and to increase further if we
choose to access additional funds.

Other Income, Net

The  following  table  shows  the  activity  in  other  income  (expense),  net  for  the  years  ended  December  31,  2019  and  2018  (in

thousands):

Other income, net
Sublease income
Income under the agreement with Ology Bioservices
Change in fair value of equity securities
Loss on lease termination
Other
Total other income, net

42

Year Ended
December 31, 

2019

2018

Change

  $

  $

3,034   $
 —  
289  
(368) 
867  
3,822   $

1,787   $
2,470  
(563) 
 —  
644  
4,338   $

1,247
(2,470)
852
(368)
223
(516)

 
 
 
 
 
 
 
    
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
    
 
 
   
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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In 2019, we were party to four sublease agreements as compared with three sublease agreements in 2018, resulting in increased
sublease income for the year December 31, 2019 as compared with the same period of 2018. No sublease income will be recognized in 2020
due to the early termination of our Berkeley, California building leases.

In  2018,  we  received  income  from  Ology  Bioservices  related  to  the  disposition  of  our  biodefense  business  in  March  2016.  The

scheduled payments concluded in 2018; therefore, there was no corresponding income received in 2019.

During the year ended December 31, 2019, we held equity securities which consisted of shares of Rezolute’s common stock. As of
December 31, 2019, the fair value of the equity securities increased, and we recognized a gain of $0.3 million for the year ended December
31, 2019. For the year ended December 31, 2018, the fair value of the equity securities decreased, and we recognized a loss of $0.6 million
for the year ended December 31, 2018. The increase in value of the equity securities was primarily due to Rezolute’s financing activities in
2019.

Total other income, net for 2019 decreased by $0.5 million as compared to 2018 primarily due to the discontinuation of income
under  the  Ology  Bioservices  agreement  of  $2.5  million  and  a  loss  of  $0.4  million  recognized  due  to  the  early  termination  of  our  legacy
building leases, partially offset by the increase in sublease income of $1.2 million and change in fair value adjustment of Rezolute common
stock of $0.9 million.

Provision for Income Taxes

We have no provision for income tax since we have incurred net operating losses during the year ended December 31, 2019.  We

had $0.1 million income tax benefit for the year ended December 31, 2018 related to our 2017 return to provision adjustment. 

As we continue to maintain a full valuation allowance against our net deferred tax assets, no income tax benefit is being recorded.
We had a total of $5.5 million of gross unrecognized tax benefits, none of which would affect the effective tax rate upon realization.  We do
not expect our unrecognized tax benefits to change significantly over the next twelve months.

Liquidity and Capital Resources

The following table summarizes our cash, our working capital and our cash flow activities for each of the periods presented (in

thousands):

Cash
Working capital

Net cash used in operating activities
Net cash used in investing activities
Net cash provided by financing activities
Effect of exchange rate changes on cash
Net increase in cash

Cash Used in Operating Activities

December
31,
  December 31,  
2019
     Change
2018
56,688   $ 45,780   $ 10,908
9,175
51,098   $ 41,923   $

  $
  $

Year Ended
December 31, 

  $

2018

2019

     Change
(285)  $ (12,644)  $ 12,359
(4,294)
554
(20)
8,599

  (19,300)  $ (15,006) 
  29,939  
  30,493  
20  
 —  
2,309   $

  $ 10,908   $

Net cash used in operating activities for the year ended December 31, 2019 of $0.3 million was primarily due to the $2.0 million
net loss incurred. Compared to 2018, the decrease of cash used in operating activities was primarily due to the $11.7 million cash receipts
under the license and common stock purchase agreement with Rezolute and the $2.5 million cash receipt from Janssen in 2019, partially
offset by $1.6 million in lease termination fees.

43

 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
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Net cash used in operating activities for the year ended December 31, 2018 of $12.6 million was primarily due to the $13.3 million

net loss incurred.

Cash Used in Investing Activities

Net cash used in investing activities for the year ended December 31, 2019 of $19.3 million was due to the purchases of milestone
and  royalty  rights  of  $19.3  million  in  connection  with  the  Bioasis  Royalty  Purchase Agreement  executed  in  February  2019,  the Aronora
Royalty Purchase Agreement executed in April 2019, and the Palo Royalty Purchase Agreement executed in September 2019.

Net cash used in investing activities for the year ended December 31, 2018 of $15.0 million was due to the purchase of milestone

and royalty rights of $15.0 million in connection with the Agenus Royalty Purchase Agreement executed in September 2018.

Cash Provided by Financing Activities

Net cash provided by financing activities for the year ended December 31, 2019 of $30.5 million was primarily related to the sale
of common stock issued under the 2019 Rights Offering for total net proceeds of $21.9 million and proceeds received under the SVB loan
agreement of $9.5 million.

Net cash provided by financing activities for the year ended December 31, 2018 of $30.0 million was primarily related to the sale
of Series Y convertible preferred stock and common stock issued under the 2018 Rights Offering for total net proceeds of $19.7 million and
proceeds received under the SVB loan agreement of $7.5 million.

Rights Offering

In November 2019, we initiated a rights offering to raise $22.0 million through the distribution of subscription rights to holders of
our common stock and Series X and Series Y preferred stock. In December 2019, we sold 1,000,000 shares of our common stock at the
subscription price of $22.00 per share for aggregate gross proceeds of $22.0 million. Total offering costs of $0.2 million were offset against
the proceeds from the sale of common stock, for total net proceeds of $21.8 million.

Silicon Valley Bank Loan Agreement

Under  our  Loan Agreement  with  SVB,  upon  our  request,  SVB  may  make  advances  available  to  us  up  to  $20.0  million.  In  March
2019, we and SVB amended the Loan Agreement to extend the draw period from March 31, 2019 to March 31, 2020. In connection with the
amendment, we issued a second warrant to SVB which is exercisable in whole or in part for up to an aggregate of 4,845 shares of common
stock with an exercise price of $14.71 per share. The warrant may be exercised on a cashless basis and is exercisable within 10 years from
the  date  of  issuance  or  upon  the  consummation  of  certain  acquisitions  of  XOMA.  As  of  December  31,  2019,  we  had  an  outstanding
principal balance of $16.1 million under the Loan Agreement, and $5.2 million was classified as current portion of long-term debt.

*           *           *

We have incurred significant operating losses since our inception and have an accumulated deficit of $1.2 billion at December 31,
2019. As  of  December  31,  2019,  we  had  $56.7  million  in  cash,  which  will  enable  us  to  maintain  our  operations  for  a  period  of  at  least
12 months following the filing date of this report.

Our  ability  to  raise  additional  capital  in  the  equity  and  debt  markets,  should  we  choose  to  do  so,  is  dependent  on  a  number  of
factors, including the market demand for our common stock or debt, which itself is subject to a number of pharmaceutical development and
business risks and uncertainties, as well as the uncertainty that we would be able to raise such additional capital at a price or on terms that
are favorable to us.

44

 
Table of Contents

Commitments and Contingencies

Although operations are influenced by general economic conditions, we do not believe inflation had a material impact on financial
results for the periods presented. We believe that we are not dependent on materials or other resources that would be significantly impacted
by inflation or changing economic conditions in the foreseeable future.

Collaborative Agreements, Royalties and Milestone Payments

We  have  committed  to  make  potential  future  milestone  payments  and  legal  fees  to  third  parties  as  part  of  licensing  and
development programs. Payments under these agreements become due and payable only upon the achievement of certain developmental,
regulatory  and  commercial  milestones  by  our licensees.  Because  it  is  uncertain  if  and  when  these  milestones  will  be  achieved,  such
contingencies,  aggregating  up  to  $7.6  million  (assuming  one  product  per  contract  meets  all  milestones)  have  not  been  recorded  on  our
consolidated balance sheet as of December 31, 2019. We are unable to determine precisely when and if our payment obligations under the
agreements will become due as these obligations are based on milestone events, the achievement of which is subject to a significant number
of risks and uncertainties.

Lease Agreements

In  December  2019,  we  terminated  two  of  our  operating  leases  in  Berkeley,  California  and  were  fully  released  from  any  further
payment obligations. We continue to lease one administrative facility in Emeryville, California and office equipment under operating leases
expiring  on  various  dates  through  February  2023.  These  leases  require  us  to  pay  taxes,  insurance,  maintenance  and  minimum  lease
payments.

Recent Accounting Pronouncements

In  June  2016,  the  Financial  Accounting  Standards  Board  (“FASB”)  issued  Accounting  Standards  Update  (“ASU”)  2016-13,
Financial  Instruments-Credit  Losses  (Topic  326):  Measurement  of  Credit  Losses  on  Financial  Instruments. ASU  2016-13  replaced  the
incurred  loss  impairment  methodology  under  current  GAAP  with  a  methodology  that  reflects  expected  credit  losses  and  requires
consideration of a broader range of reasonable and supportable information to inform credit loss estimates. ASU 2016-13 requires use of a
forward-looking  expected  credit  loss  model  for  accounts  receivables,  loans,  and  other  financial  instruments.  Adoption  of  the  standard
requires using a modified retrospective approach through a cumulative-effect adjustment to retained earnings as of the effective date to align
existing credit loss methodology with the new standard. Subsequent to issuing ASU 2016-13, the FASB issued ASU 2018-19, Codification
Improvements to Topic 326, Financial Instruments – Credit Losses, or ASU 2018-19, for the purpose of clarifying certain aspects of ASU
2016-13. In May 2019, the FASB issued ASU 2019-05, Financial Instruments – Credit Losses (Topic 326): Targeted Transition Relief, or
ASU 2019-05, to provide entities with more flexibility in applying the fair value option on adoption of the credit impairment standard. ASU
2018-19 and ASU 2019-05 have the same effective date and transition requirements as ASU 2016-13. ASU 2016-13 will be effective for all
entities  except  public  companies  that  are  not  smaller  reporting  companies  for  fiscal  years  beginning  after  December  15,  2022,  including
interim periods within those fiscal years, using a modified retrospective approach. Early adoption is permitted. The Company plans to adopt
ASU 2016-13 and related updates as of January 1, 2023. We are evaluating the impact of  adopting  this  new  accounting  guidance on  our
consolidated financial statements.

In  June  2018,  the  FASB  issued ASU  2018‑07, Compensation- Stock Compensation (Topic 718) “Improvements to Nonemployee
Share-Based  Payment  Accounting”, which expands the scope of Topic 718 to include all share-based payment transactions for acquiring
goods and services from nonemployees.  An entity should apply the requirements of Topic 718 to nonemployee awards except for certain
exemptions  specified  in  the  amendment. ASU  2018‑07  is  effective  for  our  interim  and  annual  reporting  periods  during  the  year  ending
December  31,  2019,  and  all  annual  and  interim  reporting  periods  thereafter.  Early  adoption  is  permitted,  but  no  earlier  than  an  entity’s
adoption date of Topic 606. We elected to early adopt this standard on June 30, 2018. The adoption did not have a material impact on our
consolidated financial statements.

In August 2018, the FASB issued ASU 2018‑13, Fair Value Measurement (Topic 820), which modifies, removes and adds certain

disclosure requirements on fair value measurements based on the FASB Concepts Statement, Conceptual

45

Table of Contents

Framework for Financial Reporting—Chapter 8: Notes to Financial Statements. The ASU is effective for our interim and annual reporting
periods during the year ending December 31, 2020, and all annual and interim reporting period thereafter. The amendments on changes in
unrealized  gains  and  losses,  the  range  and  weighted  average  of  significant  unobservable  inputs  used  to  develop  Level  3  fair  value
measurements and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or
annual  period  presented  in  the  initial  fiscal  year  of  adoption.  All  other  amendments  should  be  applied  retrospectively  to  all  periods
presented upon their effective date. Early adoption is permitted upon issuance of ASU 2018‑13. An entity is permitted to early adopt any
removed or modified disclosures upon issuance of ASU 2018‑13 and delay adoption of the additional disclosures until their effective date.
We early adopted the guidance related to removal of disclosures upon issuance of this ASU and will delay adoption of additional disclosures
as  permitted  under  the ASU.  We  do  not  believe  adoption  of  the  guidance  will  have  a  significant  impact  on  our  consolidated  financial
statements.

In November 2018, the FASB issued ASU 2018‑18, Collaborative Arrangements (Topic 808) “Clarifying the Interaction between
Topic 808 and Topic 606”, which requires transactions in collaborative arrangements to be accounted for under ASC 606 if the counterparty
is a customer for a good or service that is a distinct unit of account. The new standard also precludes an entity from presenting consideration
from transactions with a collaborator that is not a customer together with revenue recognized from contracts with customers. The ASU is
effective  for  our  interim  and  annual  reporting  periods  during  the  year  ending  December  31,  2020,  and  all  annual  and  interim  reporting
period thereafter. Early adoption is permitted, but no earlier than an entity’s adoption date of Topic 606. This ASU requires retrospective
adoption  to  the  date  we  adopted ASC  606,  January  1,  2018,  by  recognizing  a  cumulative-effect  adjustment  to  the  opening  balance  of
retained earnings of the earliest annual period presented. We may elect to apply the ASU retrospectively either to all contracts or only to
contracts that are not completed at the date we initially applied ASC 606. We do not believe adoption of the guidance will have a significant
impact on our consolidated financial statements.

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The
amendments  in ASU  2019-12  are  intended  to  simplify  various  aspects  related  to  accounting  for  income  taxes. ASU  2019-12  removes
certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application.
 ASU 2019-12 is effective for us beginning January 1, 2021 with early adoption permitted. We are evaluating the impact  of adopting this
new accounting guidance on our consolidated financial statements.

Off Balance Sheet Arrangements

We have not engaged in any off-balance sheet arrangements, including the use of structured finance, special purpose entities or

variable interest entities.

Item 7A.       Quantitative and Qualitative Disclosures about Market Risk 

We  are  a  smaller  reporting  company  as  defined  by  Rule  12b‑2  of  the  Securities  Exchange  Act  of  1934,  as  amended,  or  the

Exchange Act, and are not required to provide the information required under this item.

Item 8.   Financial Statements and Supplementary Data 

The  following  consolidated  financial  statements  of  the  registrant,  related  notes  and  report  of  independent  registered  public

accounting firm are set forth beginning on page F‑1 of this report.

Reports of Independent Registered Public Accounting Firm 
Consolidated Balance Sheets 
Consolidated Statements of Comprehensive Loss 
Consolidated Statements of Stockholders’ Equity 
Consolidated Statements of Cash Flows 
Notes to the Consolidated Financial Statements 

46

F-1
F-3
F-4
F-5
F-6
F-7

 
 
 
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Item 9.   Changes in and Disagreements with Accountants on Accounting and Financial Disclosure 

Not applicable.

Item 9A.       Controls and Procedures 

Evaluation of Disclosure Controls and Procedures

Under the supervision and with the participation of our management, including our Chief Executive Officer and our Senior Vice
President,  Finance  and  Chief  Financial  Officer,  we  conducted  an  evaluation  of  our  disclosure  controls  and  procedures,  as  such  term  is
defined under Rule 13a‑15 promulgated under the Securities Exchange Act of 1934, as amended, as of the end of the period covered by this
report. Our disclosure controls and procedures are intended to ensure that the information we are required to disclose in the reports that we
file  or  submit  under  the  Securities  Exchange Act  of  1934  is  (i)  recorded,  processed,  summarized  and  reported  within  the  time  periods
specified  in  the  Securities  and  Exchange  Commission’s  rules  and  forms  and  (ii)  accumulated  and  communicated  to  our  management,
including  the  Chief  Executive  Officer  and  Senior  Vice  President,  Finance  and  Chief  Financial  Officer,  as  the  principal  executive  and
financial  officers,  respectively,  to  allow  timely  decisions  regarding  required  disclosures.  Based  on  this  evaluation,  our  Chief  Executive
Officer  and  our  Senior  Vice  President,  Finance  and  Chief  Financial  Officer  concluded  that  our  disclosure  controls  and  procedures  were
effective as of the end of the period covered by this report.

Management’s Report on Internal Control over Financial Reporting

Management,  including  our  Chief  Executive  Officer  and  our  Senior  Vice  President,  Finance  and  Chief  Financial  Officer,  is
responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial  reporting  (as  such  term  is  defined  in  Exchange Act
Rules 13a‑15(f)). The Company’s internal control system was designed to provide reasonable assurance to the Company’s management and
board of directors regarding the preparation and fair presentation of published financial statements in accordance with accounting principles
generally accepted in the United States.

Management assessed the effectiveness of our internal control over financial reporting as of December 31, 2019. In making this
assessment, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”)
in Internal Control—Integrated Framework (2013 Framework).  Based  on  our  assessment  we  believe  that,  as  of  December  31,  2019,  our
internal control over financial reporting is effective based on those criteria.

This  annual  report  includes  an  attestation  report  of  the  Company’s  registered  public  accounting  firm,  Deloitte  &  Touche  LLP,

regarding the effectiveness of our internal control over financial reporting as of December 31, 2019.

Changes in Internal Control over Financial Reporting

There  were  no  changes  in  our  internal  control  over  financial  reporting  during  the  quarter  ended  December  31,  2019  that  have

materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Item 9B.       Other Information 

None.

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Item 10. Directors, Executive Officers, Corporate Governance 

PART III 

Information  required  by  this  Item  will  be  included  in  the  Company’s  proxy  statement  for  the  2020  Annual  Meeting  of
Stockholders (“2020 Proxy Statement”), under the sections labeled “Proposal 1—Election of Directors”, “Information about our Executive
Officers” and “Delinquent Section 16(a) Reports,” and is incorporated by reference. The 2020 Proxy Statement will be filed with the SEC
within 120 days after the end of the fiscal year to which this report relates.

Code of Ethics

The Company’s Code of Ethics applies to all employees, officers and directors including the Chief Executive Officer (principal
executive officer) and the Senior Vice President, Finance and Chief Financial Officer (principal financial and principal accounting officer)
and  is  posted  on  the  Company’s  website  at  www.xoma.com.  We  intend  to  satisfy  the  applicable  disclosure  requirements  regarding
amendments to, or waivers from, provisions of our Code of Ethics by posting such information on our website.

Item 11. Executive Compensation 

Information  required  by  this  Item  will  be  included  in  the  sections  labeled “Compensation  of  Executive  Officers,”  “Summary
Compensation  Table,”  “Outstanding  Equity  Awards  as  of  December  31,  2019,”  “Pension  Benefits,”  “Non-Qualified  Deferred
Compensation” and “Compensation of Directors” appearing in our 2020 Proxy Statement and is incorporated by reference.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters 

Information  required  by  this  Item  will  be  included  in  the  sections  labeled “Common  Stock  of  Certain  Beneficial  Owners  and

Management” and “Equity Compensation Plan Information” appearing in our 2020 Proxy Statement and is incorporated by reference.

Item 13. Certain Relationships and Related Transactions, and Director Independence 

Information  required  by  this  Item  will  be  included  in  the  section  labeled “Transactions  with  Related  Persons”  appearing  in  our

2020 Proxy Statement and is incorporated by reference.

Item 14. Principal Accountant Fees and Services 

Information required by this Item will be included in the section labeled “Proposal 3 – Ratification of Appointment of Independent

Registered Public Accounting Firm” appearing in our 2020 Proxy Statement and is incorporated by reference.

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PART IV 

Item 15. Exhibits and Financial Statement Schedules 

(a) The following documents are included as part of this Annual Report on Form 10‑K:

(1) Financial Statements:

All financial statements of the registrant referred to in Item 8 of this Report on Form 10‑K.

(2) Financial Statement Schedules:

All financial statements schedules have been omitted because the required information is included in the consolidated financial
statements or the notes thereto or is not applicable or required.

(3)

Exhibits:

Exhibit
Number

Exhibit Description

     Form      SEC File No.

     Exhibit

Filing Date

Incorporation By Reference

  Certificate of Incorporation of XOMA Corporation

  8‑K12G3 

000‑14710  

3.1

01/03/2012

  Certificate of Amendment of Certificate of Incorporation of

XOMA Corporation

8‑K

000‑14710

3.1

05/31/2012

  Certificate of Amendment to the Amended Certificate of

Incorporation of XOMA Corporation

8‑K

000‑14710

3.1

05/28/2014

  Certificate of Amendment to the Amended Certificate of

Incorporation of XOMA Corporation

8‑K

000‑14710

3.1

10/18/2016

  Certificate of Designation of Preferences, Rights and
Limitations of Series X Convertible Preferred Stock

  Certificate of Designation of Preferences, Rights and
Limitations of Series Y Convertible Preferred Stock

  By-laws of XOMA Corporation

  Reference is made to Exhibits 3.1,  3.2,  3.3,  3.4,  3.5,  3.6

and 3.7

  Specimen of Common Stock Certificate

8‑K  

000‑14710  

  Form of Warrants (February 2016 Warrants)

10‑Q  

000‑14710  

  Form of Warrants (May 2018 Warrants)

10‑Q  

000‑14710  

49

8‑K

000‑14710

3.1

02/16/2017

8‑K

000‑14710

8‑K  

000‑14710  

3.1

3.2

4.1

4.9

4.6

12/13/2018

01/03/2012

01/03/2012

05/04/2016

08/07/2018

3.1

3.2

3.3

3.4

3.5

3.6

3.7

4.1

4.2

4.3

4.4

 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Exhibit
Number

4.5

+
4.6

Exhibit Description

     Form      SEC File No.

Exhibit

Filing Date

Incorporation By Reference

  Form of Warrants (March 2019 Warrants)

10‑Q  

000‑14710  

4.7

05/06/2019

  Description of Registrant’s Securities

10.1*

  1981 Share Option Plan as amended and restated

S‑8

  333‑171429  

10.1

12/27/2010

10.2*

  Form of Share Option Agreement for 1981 Share Option

Plan

10‑K

000‑14710

10.1A

03/11/2008

10.3*

  Restricted Share Plan as amended and restated

S‑8

  333‑171429  

10.2

12/27/2010

10.4*

  Form of Share Option Agreement for Restricted Share

Plan

10‑K

000‑14710

10.2A

03/11/2008

10.5*

  XOMA Corporation Amended and Restated 2010 Long

Term Incentive and Stock Award Plan

S‑8

333-198719

99.1

09/12/2014

10.6*

  Amended and Restated 2010 Long Term Incentive and

Stock Award Plan

  DEF
14A

000‑14710

Appendix   A

04/05/2019

10.7*

  Form of Stock Option Agreement for Amended and

Restated 2010 Long Term Incentive and Stock Award
Plan

10‑K

000‑14710

10.6A

03/14/2012

10.8*

  2016 Incentive Compensation Plan

10‑Q  

000‑14710  

10.1

05/04/2016

10.9*

  Form of Amended and Restated Indemnification

Agreement for Officers

10‑K

000‑14710

10.6

03/08/2007

10.10*

  Form of Amended and Restated Indemnification

Agreement for Employee Directors

10‑K

000‑14710

10.7

03/08/2007

10.11*

  Form of Amended and Restated Indemnification

Agreement for Non-employee Directors

10‑K

000‑14710

10.8

03/08/2007

10.12*

  2015 Employee Stock Purchase Plan

S‑8

  333‑204367  

99.1

05/21/2015

10.13*

  Amended 2015 Employee Share Purchase Plan

8‑K  

000‑14710  

10.2

05/24/2017

10.14*

  Form of Subscription Agreement and Authorization of

Deduction under the 2015 Employee Stock Purchase Plan

S‑8

333‑204367

99.2

05/21/2015

10.15†

  License Agreement by and between XOMA Ireland

Limited and MorphoSys AG, dated as of February 1, 2002

10‑Q/A

000‑14710

10.43

12/04/2002

10.16†

  License Agreement, dated as of December 29, 2003, by
and between Diversa Corporation (n/k/a BP Biofuels
Advanced Technology Inc.) and XOMA Ireland Limited

8‑K/A

000‑14710

2

03/19/2004

50

 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Exhibit
Number

10.17

Exhibit Description

     Form      SEC File No.

     Exhibit

Filing Date

Incorporation By Reference

  First Amendment, dated October 28, 2014, to the License
Agreement between XOMA (US) LLC (assigned to it by
XOMA Ireland Limited) and BP Biofuels Advanced
Technology Inc. (previously Diversa Corporation,
previously Verenium Corporation).

10‑Q

000‑14710

10.3

11/06/2014

10.18†

  Secured Note Agreement, dated as of May 26, 2005, by and

between Chiron Corporation and XOMA (US) LLC

10‑Q

000‑14710

10.3

08/08/2005

10.19†

  Amended and Restated Research, Development and

Commercialization Agreement, executed November 7,
2008, by and between Novartis Vaccines and Diagnostics,
Inc. (formerly Chiron Corporation) and XOMA (US) LLC

10.20†

  Amendment No. 1 to Amended and Restated Research,

Development and Commercialization Agreement, effective
as of April 30, 2010, by and between Novartis Vaccines
and Diagnostics, Inc. (formerly Chiron Corporation) and
XOMA (US) LLC

10.21†

  Amendment to Amended and Restated Research,

Development and Commercialization Agreement, dated
September 30, 2015, by and between XOMA (US) LLC
and Novartis Vaccines and Diagnostics, Inc. (formerly
Chiron Corporation)

10.22

  Amendment to Secured Note Agreement, executed

September 22, 2017, by and between Novartis Vaccines
and Diagnostics, Inc. (formerly Chiron Corporation) and
XOMA (US) LLC

10.23†

10.24

10.25

  Collaboration Agreement, dated as of November 1, 2006,
between Takeda Pharmaceutical Company Limited and
XOMA (US) LLC

  First Amendment to Collaboration Agreement, effective as
of February 28, 2007, between Takeda Pharmaceutical
Company Limited and XOMA (US) LLC

  Second Amendment to Collaboration Agreement, effective
as of February 9, 2009, among Takeda Pharmaceutical
Company Limited and XOMA (US) LLC

51

10‑K

000‑14710

10.24C

03/11/2009

10‑K

000‑14710

10.25B

03/14/2012

10‑Q

000-14710

10.4

11/06/2015

10‑K

000-14710

10.31

03/07/2018

10‑K

000-14710  

10.46

03/08/2007

10‑Q

000-14710  

10.48

05/10/2007

10‑K

000-14710   10.31B  

03/11/2009

 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Exhibit
Number

Exhibit Description

     Form      SEC File No.

     Exhibit

Filing Date

Incorporation By Reference

10.26†

  License Agreement, effective as of August 27, 2007, by and

between Pfizer Inc. and XOMA Ireland Limited

8‑K

000-14710  

2

09/13/2007

10.27†

  Discovery Collaboration Agreement dated September 9,
2009, by and between XOMA Development Corporation
and Arana Therapeutics Limited

10.28

  Letter Agreement, dated June 19, 2015, by and between

XOMA (US) LLC and Novartis Vaccines and Diagnostics,
Inc.

10.29†

10.30

  License Agreement, dated September 30, 2015, by and
between XOMA (US) LLC and Novartis Institutes for
Biomedical Research, Inc.

  Amended Secured Note Agreement, dated September 30,
2015, by and between XOMA (US) LLC and Novartis
Institutes for Biomedical Research, Inc.

10‑Q/A

000-14710  

10.35

03/05/2010

10‑Q

000-14710  

10.1

08/10/2015

10‑Q

000-14710  

10.2

11/06/2015

10‑Q

000-14710  

10.3

11/06/2015

10.31†

  Asset Purchase Agreement dated November 5, 2015 by and

between the Company and Agenus West, LLC

10‑K

000-14710  

10.65

03/09/2016

10.32

10.33

  Protective Rights Agreement dated December 21, 2016 by
and between XOMA (US) LLC and HealthCare Royalty
Partners II, L.P. relating to the Royalty Interest Acquisition
Agreement dated December 20, 2016, by and between
XOMA Corporation and HealthCare Royalty Partners II,
L.P. and the Amended and Restated License Agreement,
dated effective as of October 27, 2006, between XOMA
(US) LLC and DYAX, Corp.

  Protective Rights Agreements dated December 21, 2016 by
and between XOMA (US) LLC and HealthCare Royalty
Partners II, L.P. relating to the Royalty Interest Acquisition
Agreement dated December 20, 2016, by and between
XOMA Corporation and HealthCare Royalty Partners II,
L.P. and the License Agreement, dated effective as of
August 18, 2005, between XOMA (US) LLC and Wyeth
Pharmaceuticals

52

10‑K

000-14710  

10.60

03/16/2017

10‑K

000-14710  

10.61

03/16/2017

 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Exhibit
Number

Exhibit Description

     Form      SEC File No.

     Exhibit

Filing Date

Incorporation By Reference

10.34

  Royalty Interest Acquisition Agreement dated December

20, 2016, by and between XOMA Corporation and
HealthCare Royalty Partners II, L.P., relating to the
Amended and Restated License Agreement, dated effective
as of October 27, 2006, between XOMA (US) LLC and
DYAX, Corp.

10.35

  Royalty Interest Acquisition Agreement dated December

20, 2016, by and between XOMA Corporation and
HealthCare Royalty Partners II, L.P., relating to the License
Agreement, dated effective as of August 18, 2005, between
XOMA (US) LLC and Wyeth Pharmaceuticals

10.36

10.37

10.38†

  Amendment of Section 6.10(a) and (b), dated March 8,
2017, to Royalty Interest Acquisition Agreements dated
December 20, 2016, by and between XOMA Corporation
and HealthCare Royalty Partners II, L.P.

  Common Stock Purchase Agreement, dated August 24,
2017, by and between XOMA Corporation and Novartis
Pharma AG

  IL‑1b Target License Agreement, dated August 24, 2017,
by and between XOMA Corporation and Novartis Pharma
AG

10.39†

  License Agreement, dated August 24, 2017, by and between

XOMA Corporation and Novartis Pharma AG

10.40

  Asset Purchase Agreement, dated November 4, 2015,

between XOMA Corporation and Ology Bioservices, Inc.
(formerly Nanotherapeutics Inc.)

10.41†

  License Agreement, dated March 23, 2016, between

XOMA Corporation and Ology Bioservices, Inc. (formerly
Nanotherapeutics Inc.)

10.42†

  Amendment and Restatement, dated February 2, 2017, to
the Asset Purchase Agreement, dated November 4, 2015,
and License Agreement, dated March 23, 2016, between
XOMA Corporation and Ology Bioservices, Inc. (formerly
Nanotherapeutics Inc.)

10.43*

  Officer Employment Agreement, dated August 7, 2017,

10‑K

000-14710  

10.62

03/16/2017

10‑K

000-14710  

10.63

03/16/2017

10‑K

000-14710

10.64

03/16/2017

10‑Q

000-14710

10.1

11/06/2017

10‑Q

000-14710

10.2

11/06/2017

10‑Q

000-14710

10.3

11/06/2017

10‑Q

000-14710

10.4

11/06/2017

10‑Q

000-14710

10.5

11/06/2017

10‑Q

000-14710

10.6

11/06/2017

between XOMA Corporation and James R. Neal

10‑Q

000-14710

10.7

11/06/2017

53

 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit
Number

Exhibit Description

     Form      SEC File No.

     Exhibit

Filing Date

Incorporation By Reference

10.44*

  Officer Employment Agreement, dated August 7, 2017,

between XOMA Corporation and Thomas Burns

10‑Q

000-14710

10.8

11/06/2017

10.45*

  Amended and Restated Change of Control Severance

Agreement, dated August 7, 2017, to the Change of Control
Severance Agreement, dated January 3, 2011, between
XOMA Corporation and James R. Neal

10.46*

  Amended and Restated Change of Control Severance

Agreement, dated August 7, 2017, to the Change of Control
Severance Agreement, dated October 28, 2015, between
XOMA Corporation and Thomas Burns

10‑Q

000-14710

10.9

11/06/2017

10‑Q

000-14710

10.10

11/06/2017

10.47†

  Royalty Purchase Agreement dated September 20, 2018,

between XOMA Corporation and Agenus Inc.

10‑Q

000-14710  

10.9

11/07/2018

10.48

  Loan and Security Agreement dated May 7, 2018, between

XOMA Corporation, XOMA (US) LLC and XOMA
Technology, Ltd. And Silicon Valley Bank

10.49†

  License Agreement, dated December 6, 2017, between

10‑Q

000-14710  

10.5

08/07/2018

XOMA (US) LLC and Rezolute, Inc. (formerly AntriaBio)

10‑K

000-14710

10.66

03/07/2018

10.50†

  Common Stock Purchase Agreement, dated December 6,
2017, between XOMA (US) LLC and Rezolute, Inc.
(formerly AntriaBio)

10.51†

  Amendment No. 1, dated March 30, 2018, to the License

Agreement, dated December 6, 2017, between XOMA (US)
LLC and Rezolute, Inc. (formerly AntriaBio, Inc.)

10.52†

  Amendment No. 1, dated March 30, 2018, to the Common

Stock Purchase Agreement, dated December 6, 2017,
between XOMA Corporation and Rezolute, Inc. (formerly
AntriaBio, Inc.)

10.53†

  Amendment No. 2, dated January 7, 2019, to the License

Agreement, dated December 6, 2017, between XOMA (US)
LLC and Rezolute, Inc. (formerly AntriaBio)

10‑K

000-14710

10.65

03/07/2018

10‑Q

000-14710  

10.1

05/09/2018

10‑Q

000-14710  

10.2

05/09/2018

10-K

000-14710  

10.71

03/07/2019

54

 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit
Number

Exhibit Description

     Form      SEC File No.

     Exhibit

Filing Date

Incorporation By Reference

10.54†

  Amendment No. 2, dated January 7, 2019, to the Common

Stock Purchase Agreement, dated December 6, 2017,
between XOMA (US) LLC and Rezolute, Inc. (formerly
AntriaBio)

10.55

10.56

  Common Stock Sales Agreement, dated December 18,
2018, by and between XOMA Corporation and H.C.
Wainwright & Co., LLC

  First Amendment, dated March 4, 2019, to the Loan and
Security Agreement dated May 7, 2018, between XOMA
Corporation, XOMA (US) LLC and XOMA Technology,
Ltd. and Silicon Valley Bank

10-K

000-14710  

10.72

03/07/2019

8‑K

000-14710  

10.1

12/18/2018

10-Q

000-14710  

10.3

05/06/2019

10.57#

  Royalty Purchase Agreement dated April 7, 2019, between

XOMA (US) LLC and Aronora, Inc.

10-Q

000-14710  

10.1

08/06/2019

10.58#

  Royalty Purchase Agreement dated September 26, 2019,

between XOMA (US) LLC and Palobiofarma, S.L

10-Q

000-14710  

10.1

11/05/2019

10.59#

  Separation Agreement dated August 31, 2019 between the

Company and Dee Datta

10-Q

000-14710  

10.2

11/05/2019

+
10.60

  Lease Termination Agreement, dated December 17, 2019,

by and between XOMA Corporation and 7th Street
Property General Partnership

+
10.61

  Lease Termination Agreement, dated December 17, 2019,

by and between XOMA Corporation and 7th Street
Properties II

21.1

+

23.1

+

24.1

+

31.1

+

  Subsidiaries of the Company

  Consent of Deloitte & Touche LLP, Independent Registered

Public Accounting Firm

  Power of Attorney (included on the signature pages hereto)

  Certification of Chief Executive Officer, as required by

Rule 13a‑14(a) or Rule 15d‑14(a)

31.2

+

  Certification of Chief Financial Officer, as required by Rule

13a‑14(a) or Rule 15d‑14(a)

55

 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit
Number

32.1

+

Exhibit Description

     Form      SEC File No.

     Exhibit

Filing Date

Incorporation By Reference

  Certification of Chief Executive Officer and Chief Financial
Officer, as required by Rule 13a‑14(b) or Rule 15d‑14(b)
and Section 1350 of Chapter 63 of Title 18 of the United
States Code (18 U.S.C. §1350)

(1)

101.INS

+

  XBRL Instance Document

101.SCH   XBRL Taxonomy Extension Schema Document

+

101.CAL   XBRL Taxonomy Extension Calculation Linkbase

+

Document

101.DEF   XBRL Taxonomy Extension Definition Linkbase

+

Document

101.LAB   XBRL Taxonomy Extension Labels Linkbase Document

+

101.PRE   XBRL Taxonomy Extension Presentation Linkbase

+

Document

†     Confidential treatment has been granted with respect to certain portions of this exhibit. This exhibit omits the information subject to this

confidentiality request. Omitted portions have been filed separately with the SEC.

*     Indicates a management contract or compensation plan or arrangement.
+
      Filed herewith
#     Portions of this exhibit (indicated by asterisks) have been omitted as the Registrant has determined that (i) the omitted information is not

material and (ii) the omitted information would likely cause competitive harm to the Registrant if publicly disclosed.

(1)

    This certification accompanies the Form 10‑K to which it relates, is not deemed filed with the Securities and Exchange Commission and is
not  to  be  incorporated  by  reference  into  any  filing  of  the  Registrant  under  the  Securities Act  of  1933,  as  amended,  or  the  Securities
Exchange Act of 1934, as amended (whether made before or after the date of the Form 10‑K), irrespective of any general incorporation
language contained in such filing.

The exhibits listed in the accompanying index to exhibits are filed or incorporated by reference as part of this Annual Report on

Form 10‑K.

Item 16. Form 10‑K Summary 

None.

56

 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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, on this 10  day of March 2020.

th

SIGNATURES 

XOMA Corporation

By:

/s/ JAMES R. NEAL
James R. Neal
Chief Executive Officer and Director

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints James
Neal and Thomas Burns, and each of them, as his or her true and lawful attorneys-in-fact and agents, with full power of substitution and
resubstitution  for  him  or  her  and  in  his  or  her  name,  place,  and  stead,  in  any  and  all  capacities,  to  sign  any  and  all  amendments  to  this
Annual  Report  on  Form  10‑K,  and  to  file  the  same,  with  exhibits  thereto  and  other  documents  in  connection  therewith,  with  the  SEC,
granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing
requisite and necessary to be done therewith, as fully to all intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents, and any of them or their substitute or substitutes, may lawfully do or cause to be done
by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on

behalf of the registrant and in the capacities and on the dates indicated.

Signature

/s/ James R. Neal
(James R. Neal)

  Chief Executive Officer (Principal Executive Officer) and Director

March 10, 2020

Title

Date

/s/ Thomas Burns
(Thomas Burns)

  Senior Vice President, Finance and Chief Financial Officer
(Principal Financial and Principal Accounting Officer)

/s/ W. Denman Van Ness
(W. Denman Van Ness)

  Chairman of the Board of Directors

/s/ Joseph M. Limber
(Joseph M. Limber)

  Director

/s/ Jack L. Wyszomierski
(Jack L. Wyszomierski)

  Director

/s/ Matthew Perry
(Matthew Perry)

/s/ Barbara Kosacz
(Barbara Kosacz)

  Director

  Director

March 10, 2020

March 10, 2020

March 10, 2020

March 10, 2020

March 10, 2020

March 10, 2020

57

 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Index to Consolidated Financial Statements

Reports of Independent Registered Public Accounting Firm 
Consolidated Balance Sheets 
Consolidated Statements of Operations and Comprehensive Loss 
Consolidated Statements of Stockholders’ Equity 
Consolidated Statements of Cash Flows 
Notes to the Consolidated Financial Statements 

     F-1
F-3
F-4
F-5
F-6
F-7

58

 
 
 
 
 
 
 
 
Table of Contents

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Stockholders and the Board of Directors of XOMA Corporation

Opinion on the Financial Statements

We  have  audited  the  accompanying  consolidated  balance  sheets  of  XOMA  Corporation  and  subsidiaries  (the  "Company")  as  of
December  31,  2019  and  2018,  the  related  consolidated  statements  of  operations  and  comprehensive  loss,  stockholders'  equity,  and  cash
flows, for the each of the two years in the period ended December 31, 2019, and the related notes (collectively referred to as the "financial
statements").  In  our  opinion,  the  financial  statements  present  fairly,  in  all  material  respects,  the  financial  position  of  the  Company  as  of
December 31, 2019 and 2018, and the results of its operations and its cash flows for the each of the two years in the period ended December
31, 2019, in conformity with accounting principles generally accepted in the United States of America.

Change in Accounting Principle

As  discussed  in  Note  1  to  the  financial  statements,  effective  January  1,  2019,  the  Company  adopted  FASB ASC  Topic  842,

Leases, using the modified retrospective approach. 

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the
Company's 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 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 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  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 financial statements. We believe that our audits provide
a reasonable basis for our opinion.

/s/ Deloitte & Touche LLP

San Francisco, California
March 10, 2020

We have served as the Company’s auditor since 2018.

F-1

 
 
 
Table of Contents

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and the Board of Directors of XOMA Corporation

Opinion on Internal Control over Financial Reporting

We  have  audited  the  internal  control  over  financial  reporting  of  XOMA  Corporation  and  subsidiaries  (the  “Company”)  as  of
December  31,  2019,  based  on  criteria  established  in  Internal  Control  —  Integrated  Framework  (2013)  issued  by  the  Committee  of
Sponsoring  Organizations  of  the  Treadway  Commission  (COSO).  In  our  opinion,  the  Company  maintained,  in  all  material  respects,
effective internal control over financial reporting as of December 31, 2019, based on criteria established in Internal Control — Integrated
Framework (2013) issued by COSO.

We  have  also  audited,  in  accordance  with  the  standards  of  the  Public  Company Accounting  Oversight  Board  (United  States)
(PCAOB),  the consolidated financial statements as of and for the year ended December 31, 2019, of the Company and our report dated
March 10, 2020, expressed an unqualified opinion on those 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 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 included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists,
testing  and  evaluating  the  design  and  operating  effectiveness  of  internal  control  based  on  the  assessed  risk,  and  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/ Deloitte & Touche LLP

San Francisco, California 
March 10, 2020

F-2

 
 
XOMA Corporation
CONSOLIDATED BALANCE SHEETS 
(in thousands, except share data)

ASSETS

Table of Contents

Current assets:

Cash
Trade and other receivables
Prepaid expenses and other current assets

Total current assets
Property and equipment, net
Operating lease right-of-use assets
Long-term royalty receivables
Equity securities
Other assets

Total assets

LIABILITIES AND STOCKHOLDERS’ EQUITY

Current liabilities:

Accounts payable
Accrued and other liabilities
Contingent consideration under royalty purchase agreements
Operating lease liabilities
Unearned revenue recognized under units-of-revenue method
Contract liabilities
Current portion of long-term debt

Total current liabilities

Unearned revenue recognized under units-of-revenue method – long-term
Long-term debt
Long-term operating lease liabilities
Other liabilities – long-term

Total liabilities

Commitments and Contingencies (Note 15)

Stockholders’ equity:

Convertible preferred stock, $0.05 par value, 1,000,000 shares authorized, 6,256 shares issued and outstanding at
December 31, 2019 and December 31, 2018
Common stock, $0.0075 par value, 277,333,332 shares authorized, 9,758,583 and 8,690,723 shares issued and
outstanding at December 31, 2019 and December 31, 2018, respectively
Additional paid-in capital
Accumulated deficit

Total stockholders’ equity

Total liabilities and stockholders’ equity

December 31,   
2019

December 31, 
2018

$

$

$

$

$

$

56,688  
2,933  
352  
59,973  
34  
510  
34,375  
681  
151  
95,724  

614  
945  
75  
163  
1,096  
798  
5,184  
8,875  
15,317  
27,093  
408  
43  
51,736  

45,780
1,468
378
47,626
59
—
15,000
392
708
63,785

1,244
2,382
 —
 —
490
798
789
5,703
17,017
21,690
 —
590
45,000

 —  

 —

73  
1,238,299  
(1,194,384) 
43,988  

65
1,211,122
(1,192,402)
18,785

$

95,724  

$

63,785

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

F-3

 
 
 
 
    
    
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

XOMA Corporation
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS 
(in thousands, except per share amounts)

Revenues:

Revenue from contracts with customers
Revenue recognized under units-of-revenue method

Total revenues

Operating expenses:

Research and development
General and administrative
Restructuring

Total operating expenses

Loss from operations

Other income (expense), net:

Interest expense
Other income, net

Loss before income tax
Income tax benefit
Net loss and comprehensive loss

Basic and diluted net loss per share available to common stockholders
Weighted average shares used in computing basic and diluted net loss per share available to
common stockholders

For the Year Ended December 31, 

2019

2018

  $

17,276   $
1,094  
18,370  

1,253  
21,002  
 —  
22,255  

5,068
231
5,299

1,682
18,563
1,911
22,156

(3,885) 

(16,857)

(1,919) 
3,822  
(1,982) 
 —  
(1,982)  $
(0.23)  $

8,763  

(922)
4,338
(13,441)
98
(13,343)
(1.59)

8,373

  $
  $

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

F-4

 
 
 
 
    
    
 
 
  
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

XOMA Corporation
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY 
(in thousands)

  Convertible Preferred  
Stock

Common Stock

     Shares      Amount

     Shares      Amount

  Additional  
Paid-In
     Capital

  Accumulated   Stockholders’

Total

Balance, January 1, 2018
Exercise of stock options
Issuance of common stock related to 401(k) contribution
and ESPP
Vesting of restricted stock units
Stock-based compensation expense
Issuance of warrants
Issuance of convertible preferred stock, net
Issuance of common stock, net
Net loss and comprehensive loss
Balance, December 31, 2018
Exercise of stock options
Issuance of common stock related to 401(k) contribution
and ESPP
Vesting of restricted stock units
Stock-based compensation expense
Issuance of warrants
Issuance of common stock, net
Net loss and comprehensive loss
Balance, December 31, 2019

 5  
 —  

 —  
 —  
 —  
 —  
 1  
 —  
 —  
 6  
 —  

 —  
 —  
 —  
 —  
 —  
 —  
 6  

$

$

$

 —  
 —  

 —  
 —  
 —  
 —  
 —  
 —  
 —  
 —  
 —  

 —  
 —  
 —  
 —  
 —  
 —  
 —  

8,249   $
68  

 4  
16  
 —  
 —  
 —  
354  
 —  
8,691   $
56  

10  
 2  
 —  
 —  
1,000  
 —  
9,759   $

62   $ 1,184,783   $
 1  

366  

64  
 —  
3,902  
139  
16,004  
5,864  
 —  

 —  
 —  
 —  
 —  
 —  
 2  
 —  
65   $ 1,211,122   $
 —  

273  

 —  
 —  
 —  
 —  
 8  
 —  
73   $ 1,238,299   $

136  
 —  
4,948  
66  
21,754  
 —  

Deficit
(1,179,059)  $

 —  

 —  
 —  
 —  
 —  
 —  
 —  
(13,343)  
(1,192,402)  $

 —  

 —  
 —  
 —  
 —  
 —  
(1,982) 
(1,194,384)  $

Equity

5,786
367

64
 —
3,902
139
16,004
5,866
(13,343)
18,785
273

136
 —
4,948
66
21,762
(1,982)
43,988

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

F-5

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

XOMA Corporation
CONSOLIDATED STATEMENTS OF CASH FLOWS 
(in thousands)

Cash flows from operating activities:

Net loss
Adjustments to reconcile net loss to net cash used in operating activities:

Fair value of Rezolute common stock shares received as consideration for license agreement
Stock-based compensation expense
Common stock contribution to 401(k)
Depreciation and amortization
Amortization of debt issuance costs, debt discount and final payment on debt
Non-cash lease expense
Payments in excess of loss recognized upon early lease termination
Realized gain on foreign currency exchange
Change in fair value of equity securities
Changes in assets and liabilities:
Trade and other receivables
Prepaid expenses and other assets
Accounts payable and accrued liabilities
Unearned revenue recognized under units-of-revenue method
Operating lease liabilities
Income tax payable
Other liabilities

Net cash used in operating activities

Cash flows from investing activities:

Purchase of property and equipment

Payments related to purchase of royalty rights
Net cash used in investing activities

Cash flows from financing activities:

Proceeds from issuance of convertible preferred stock, net of issuance costs
Proceeds from issuance of common stock, net of issuance costs
Proceeds from exercise of options
Proceeds from issuance of long-term debt
Payment of preferred and common stock issuance costs for prior year
Debt issuance costs and loan fees
Principal payments – debt
Principal payments – finance lease
Taxes paid related to net share settlement of equity awards

Net cash provided by financing activities

Effect of exchange rate changes on cash

Net increase in cash
Cash at the beginning of the period
Cash at the end of the period

Supplemental Cash Flow Information:

Cash paid for interest
Cash paid for taxes

Non-cash investing and financing activities:

Interest added to principal balance on long-term debt
Accrued cost related to issuance of preferred and common stock
Prepaid financing cost related to issuance of common stock
Issuance of common stock warrant under SVB loan
Estimated fair value of contingent consideration under the royalty
purchase agreements

Year Ended December 31, 
2018

2019

$

(1,982) 

$

(13,343)

 —  
4,948  
102  
25  
592  
1,890  
(1,476) 
 —  
(289)  

(1,558) 
240  
(242)  
(1,094) 
(2,202) 
 —  
761  
(285)  

 —  
(19,300)  
(19,300)  

 —  
21,929  
610  
9,500  
(317)  
 —  
(938)  
(15) 
(276)  
30,493  

 —  

10,908  
45,780  
56,688  

558  
 —  

710  
166  
 —  
66  

75  

$

$
$

$
$
$
$

$

(955)
3,902
20
30
141
 —
 —
(20)
563

(1,029)
(102)
(1,161)
(231)
 —
(1,637)
1,178
(12,644)

(6)
(15,000)
(15,006)

16,269
6,063
583
7,500
 —
(217)
 —
(13)
(246)
29,939

20

2,309
43,471
45,780

81
1,637

621
417
100
139

 —

$

$
$

$
$
$
$

$

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

F-6

 
 
 
 
    
    
 
 
   
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
    
 
 
 
 
 
 
     
 
 
 
 
 
 
 
 
Table of Contents

1. Description of Business

XOMA Corporation
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 

XOMA Corporation (referred to as “XOMA” or the “Company”), a Delaware corporation, is a biotech royalty aggregator with a
sizable  portfolio  of  economic  rights  to  future  potential  milestone  and  royalty  payments  associated  with  partnered  pre-commercial
therapeutic  candidates.  The  Company’s  portfolio  was  built  through  licensing  its  proprietary  products  and  platforms  from  its  legacy
discovery and development business, combined with acquisitions of rights to future milestones and royalties that the Company has made
since the royalty aggregator business model was implemented in 2017. The Company expects that most of its future revenue will be based
on payments the Company may receive for milestones and royalties related to these programs.

Liquidity and Financial Condition

The  Company  has  incurred  significant  operating  losses  and  negative  cash  flows  from  operations  since  its  inception.  As  of
December  31,  2019,  the  Company  had  cash  of  $56.7  million.  Based  on  the  Company’s  current  cash  balance  and  its  ability  to  control
discretionary spending, such as royalty acquisitions, the Company has evaluated and concluded its financial condition is sufficient to fund
its  planned  operations  and  commitments  and  contractual  obligations  for  a  period  of  at  least  one  year  following  the  date  that  these
consolidated financial statements are issued.

2. Basis of Presentation and Significant Accounting Policies

Basis of Presentation

The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All
intercompany accounts and transactions among consolidated entities were eliminated upon consolidation. The accompanying consolidated
financial statements were prepared in accordance with generally accepted accounting principles (“GAAP”) in the United States for financial
information and with the instructions to Form 10-K and Article 10 of Regulation S-X. 

Use of Estimates

The preparation of financial statements in conformity with GAAP in the United States requires management to make estimates and
assumptions  that  affect  the  reported  amounts  of  assets,  liabilities,  revenue  and  expenses,  and  related  disclosures.  On  an  ongoing  basis,
management  evaluates  its  estimates  including,  but  not  limited  to,  those  related  to  revenue  recognition, equity  securities,  operating  lease
right-of-use  assets  and  liabilities, legal  contingencies,  contingent  considerations  under  royalty  purchase  agreements,  royalty  receivables,
revenue  recognized  under  units-of-revenue  method,  income  taxes  and  stock-based  compensation.  The  Company  bases  its  estimates  on
historical  experience  and  on  various  other  market-specific  and  other  relevant  assumptions  that  are  believed  to  be  reasonable  under  the
circumstances,  the  results  of  which  form  the  basis  for  making  judgments  about  the  carrying  values  of  assets  and  liabilities  that  are  not
readily apparent from other sources.

Actual  results  may  differ  significantly  from  these  estimates,  such  as  the  Company’s  billing  under  government  contracts  and
amortization  of  the  payments  received  from  HealthCare  Royalty  Partners  II,  L.P.  (“HCRP”).  Under  the  Company’s  contracts  with  the
National Institute of Allergy and Infectious Diseases (“NIAID”), a part of the National Institutes of Health (“NIH”), the Company billed
using NIH’s provisional rates and thus is subject to future audits at the discretion of NIAID’s contracting office. In October of 2019, NIH
notified the Company that it engaged KPMG to perform an audit of the Company’s incurred cost submissions for 2013, 2014 and 2015.
This audit is not complete and may result in an adjustment to revenue previously reported which potentially could be material. In addition,
under the contracts with HCRP, the amortization for the reporting period is calculated based on the payments expected to be made by the
licensees  to  HCRP  over  the  term  of  the  arrangement. Any  changes  to  the  estimated  payments  by  the  licensees  to  HCRP  can  result  in  a
material adjustment to revenue previously reported.

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Table of Contents

Revenue Recognition

Effective January 1, 2018, the Company adopted Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts
with  Customers ("ASC  606"). ASC  606  applies  to  all  contracts  with  customers,  except  for  contracts  that  are  within  the  scope  of  other
standards,  such  as  leases,  insurance,  collaboration  arrangements  and  financial  instruments.  Under  ASC  606,  the  Company  recognizes
revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the Company
expects to receive in exchange for those goods or services.

To determine revenue recognition for arrangements that the Company determines are within the scope of ASC 606, the Company
performs  the  following  five  steps:  (i)  identify  the  contract(s)  with  a  customer;  (ii)  identify  the  performance  obligations  in  the  contract;
(iii)  determine  the  transaction  price;  (iv)  allocate  the  transaction  price  to  the  performance  obligations  in  the  contract;  and  (v)  recognize
revenue when (or as) the Company satisfies a performance obligation. The Company only applies the five-step model to contracts when it is
probable that Company will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer. At
contract  inception,  once  the  contract  is  determined  to  be  within  the  scope  of  ASC  606,  the  Company  assesses  the  goods  or  services
promised within each contract and determines those that are performance obligations and assesses whether each promised good or service is
distinct.  The  Company  then  recognizes  as  revenue  the  amount  of  the  transaction  price  that  is  allocated  to  the  respective  performance
obligation based on relative fair values, when (or as) the performance obligation is satisfied.

The Company recognizes revenue from its license and collaboration arrangements and royalties. The terms of the arrangements
generally include payment to the Company of one or more of the following: non-refundable, upfront license fees, development, regulatory
and commercial milestone payments, and royalties on net sales of licensed products.

License of intellectual property

If the license to the Company’s intellectual property is determined to be distinct from the other performance obligations identified
in  the  arrangement,  the  Company  recognizes  revenue  from  non-refundable,  upfront  fees  allocated  to  the  license  when  the  license  is
transferred to the customer and the customer is able to use and benefit from the license. For licenses that are bundled with other promises,
such  as  transfer  of  related  materials,  process  and  know-how,  the  Company  utilizes  judgement  to  assess  the  nature  of  the  combined
performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time. Under the
Company’s license agreements, the nature of the combined performance obligation is the granting of licenses to the customers as the other
promises are not separately identifiable in the context of the arrangement. Since the Company grants the license to a customer as it exists at
the point of transfer and is not involved in any future development or commercialization of the products related to the license, the nature of
the  license  is  a  right  to  use  the  Company’s  intellectual  property  as  transferred. As  such,  the  Company  recognizes  revenue  related  to  the
combined performance obligation upon completion of the delivery of the related materials, process and know-how (i.e., at a point in time).

Milestone payments

At  the  inception  of  each  arrangement  that  includes  development  and  regulatory  milestone  payments,  the  Company  evaluates
whether the milestones are considered probable of being reached and estimates the amount to be included in the transaction price. ASC 606
suggests  two  alternatives  to  use  when  estimating  the  amount  of  variable  consideration:  the  expected  value  method  and  the  most  likely
amount  method.  Under  the  expected  value  method,  an  entity  considers  the  sum  of  probability-weighted  amounts  in  a  range  of  possible
consideration  amounts.  Under  the  most  likely  amount  method,  an  entity  considers  the  single  most  likely  amount  in  a  range  of  possible
consideration amounts. The Company uses the most likely amount method for development and regulatory milestone payments.

If it is probable that a significant cumulative revenue reversal would not occur, the associated milestone value is included in the
transaction price. Milestone payments that are not within the control of the Company or the licensee, such as regulatory approvals, are not
considered  probable  of  being  achieved  until  those  approvals  are  received.  The  transaction  price  is  then  allocated  to  each  performance
obligation on a relative stand-alone selling price basis. The Company recognizes revenue as or when the performance obligations under the
contract are satisfied. At the end of each subsequent

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reporting  period,  the  Company  re-evaluates  the  probability  or  achievement  of  each  such  milestone  and  any  related  constraint,  and  if
necessary, adjusts its estimates of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which
would affect revenue and earnings in the period of adjustment.

Royalties

For arrangements that include sales-based royalties, including milestone payments based on the level of sales, and the license is
deemed to be the predominant item to which the royalties relate, the Company recognizes revenue at the later of (i) when the related sales
occur,  or  (ii)  when  the  performance  obligation  to  which  some  or  all  of  the  royalty  has  been  allocated  has  been  satisfied  (or  partially
satisfied).

Upfront  payments  and  fees  are  recorded  as  deferred  revenue  upon  receipt  or  when  due  and  may  require  deferral  of  revenue
recognition to a future period until the Company performs its obligations under these arrangements. Amounts payable to the Company are
recorded  as  accounts  receivable  when  the  Company’s  right  to  consideration  is  unconditional.  The  Company  does  not  assess  whether  a
contract  has  a  significant  financing  component  if  the  expectation  at  contract  inception  is  such  that  the  period  between  payment  by  the
customer and the transfer of the promised goods or services to the customer will be one year or less.

Sale of Future Revenue Streams

The  Company  has  sold  its  rights  to  receive  certain  milestones  and  royalties  on  product  sales.  In  the  circumstance  where  the
Company has sold its rights to future milestones and royalties under a license agreement and also maintains limited continuing involvement
in  the  arrangement  (but  not  significant  continuing  involvement  in  the  generation  of  the  cash  flows  that  are  due  to  the  purchaser),  the
Company defers recognition of the proceeds it receives for the sale of milestone or royalty streams and recognizes such unearned revenue as
revenue under units-of-revenue method over the life of the underlying license agreement. Under the  units-of-revenue method, amortization
for a reporting period is calculated by computing a ratio of the proceeds received from the purchaser to the total payments expected to be
made to the purchaser over the term of the agreement, and then applying that ratio to the period’s cash payment.

Estimating the total payments expected to be received by the purchaser over the term of such arrangements requires management to
use subjective estimates and assumptions. Changes to the Company’s estimate of the payments expected to be made to the purchaser over
the term of such arrangements could have a material effect on the amount of revenues recognized in any particular period.

Stock-Based Compensation

The  Company  recognizes  compensation  expense  for  all  stock-based  payment  awards  made  to  the  Company’s  employees,
consultants and directors that are expected to vest based on estimated fair values. The valuation of stock option awards is determined at the
date of grant using the Black-Scholes Option Pricing Model (the “Black-Scholes Model”). The Black-Scholes Model requires inputs such as
the  expected  term  of  the  option,  expected  volatility  and  risk-free  interest  rate.  To  establish  an  estimate  of  expected  term,  the  Company
considers  the  vesting  period  and  contractual  period  of  the  award  and  its  historical  experience  of  stock  option  exercises,  post-vesting
cancellations and volatility. The estimate of expected volatility is based on the Company’s historical volatility. The risk-free rate is based on
the yield available on United States Treasury zero-coupon issues corresponding to the expected term of the award. The Company records
forfeitures when they occur.

The  Company  records  compensation  expense  for  service-based  awards  on  a  straight-line  basis  over  the  requisite  service  period,
which is generally the vesting period of the award, or to the date on which retirement eligibility is achieved, if shorter. For awards with
performance-based conditions, at the point that it becomes probable that the performance conditions will be met, the Company records a
cumulative  catch-up  of  the  expense  from  the  grant  date  to  the  current  date,  and  then  amortizes  the  remainder  of  the  expense  over  the
remaining service period. Management evaluates when the achievement of a performance-based condition is probable based on the expected
satisfaction of the performance conditions as of the reporting date. The amount of stock-based compensation expense recognized during a
period is based on the value of the portion of the awards that are ultimately expected to vest.

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The valuation of restricted stock units (“RSUs”) is determined at the date of grant using the Company’s closing stock price.

Equity Securities

The  Company  received  shares  of  common  stock  from  Rezolute  (Note  4).  Equity  investments  in  Rezolute  are  classified  in  the
consolidated balance sheets as equity securities. The equity securities are measured at fair value, with changes in fair value recorded in the
other  income  (expense),  net  line  item  of  the  consolidated  statement  of  operations  and  comprehensive  loss  at  each  reporting  period.  The
Company  remeasures  its  equity  investments  at  each  reporting  period  until  such  time  that  the  investment  is  sold  or  disposed  of.  If  the
Company sells an investment, any realized gains and losses on the sale of the securities will be recognized in the consolidated statement of
operations and comprehensive loss in the period of sale.

Purchase of Rights to Future Milestones and Royalties

The  Company  has  purchased  rights  to  receive  a  portion  of  certain  future  developmental,  regulatory  and  commercial  sales
milestones,  royalties,  and  option  fees  on  sales  of  products  currently  in  clinical  development.  The  Company  acquired  such  rights  from
various entities and recorded the amount paid for these rights as long-term royalty receivables (see Note 5). In addition, the Company may
be obligated to make contingent payments related to certain product development milestones, fees upon exercise of options related to future
license products and sales-based milestones. The contingent payments are evaluated whether they are freestanding instruments or embedded
derivatives. If freestanding instruments, the contingent payments are measured at fair value at the inception of the arrangement, subject to
remeasurement  to  fair  value  each  reporting  period. Any  changes  in  the  estimated  fair  value  is  recorded  in  the  consolidated  statement  of
operations and comprehensive loss. The Company accounts for milestone and royalty rights related to developmental pipeline products on a
non-accrual basis using the cost recovery method. These developmental pipeline products are non-commercialized, non-approved products
that require Food and Drug Administration (“FDA”) or other regulatory approval, and thus have uncertain cash flows. The Company is not
yet able to reliably forecast future cash flows given their pre-commercial stages of development. The related receivable balance is classified
as noncurrent since no payments are probable to be received in the near term. Under the cost recovery method, any milestone or royalty
payment received is recorded as a direct reduction of the recorded receivable balance. When the recorded receivable balance has been fully
collected, any additional amounts collected are recognized as revenue.

The Company reviews any impairment indicators and changes in expected recoverability of the long-term royalty receivable asset
regularly.  If  expected  future  cash  flows  discounted  to  the  current  period  are  less  than  the  carrying  value  of  the  asset,  the  Company  will
record impairment. The impairment will be recognized by reducing the financial asset to an amount that represents the present value of the
most recent estimate of cash flows. No impairment was recorded as of December 31, 2019 and December 31, 2018.

Leases

The  Company  entered  into  lease  agreements  for  its  corporate  headquarters  in  Emeryville,  California  and  for  office  and  laboratory
facilities in Berkeley, California. In connection with the restructuring events in 2017 and 2018, the Company completely vacated its leased
facilities in Berkeley, California, once used for legacy operations, and subleased the space in the vacated buildings. In December 2019, the
Company terminated all operating leases in Berkeley, California and was fully released from any further payment obligations. As a result of
the lease terminations the Company was also released from all financial obligations under its sublease agreements.  The Company continues
to lease its headquarters office space in Emeryville, California.

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Table of Contents

Effective  January  1,  2019,  the  Company  adopted ASC  Topic  842, Leases  (“ASC  842”)  using  the  optional  transition  method  and
applied the standard only to leases that existed at that date. Under the optional transition method, the Company does not need to restate the
comparative periods in transition and will continue to present financial information and disclosures for periods before January 1, 2019 in
accordance  with ASC  Topic  840.  The  Company  has  elected  the  package  of  practical  expedients  allowed  under ASC  Topic  842,  which
permits  the  Company  to  account  for  its  existing  operating  leases  as  operating  leases  under  the  new  guidance,  without  reassessing  the
Company’s prior conclusions about lease identification, lease classification and initial direct costs. As a result of the adoption of the new
lease accounting guidance, on January 1, 2019, the Company recognized operating lease right-of-use assets of $7.4 million and operating
lease liabilities of $9.2 million. The difference in the operating lease right-of-use assets and operating lease liabilities is primarily due to the
carrying amount of lease-related restructuring liabilities of $1.7 million as of December 31, 2018 (Note 8).

The  Company  determines  the  initial  classification  and  measurement  of  its  right-of-use  assets  and  lease  liabilities  at  the  lease
commencement date and thereafter if modified. The lease term includes any renewal options and termination options that the Company is
reasonably certain to exercise. The present value of lease payments is determined by using the interest rate implicit in the lease, if that rate is
readily determinable; otherwise, the Company uses its incremental borrowing rate. The incremental borrowing rate is determined by using
the rate of interest that the Company would pay to borrow on a collateralized basis an amount equal to the lease payments for a similar term
and  in  a  similar  economic  environment. The  Company  built  its  incremental  borrowing  rate  starting  with  the  interest  rate  on  its  fully
collateralized debt and then adjusted it for lease term length.

Rent  expense  for  operating  leases  is  recognized  on  a  straight-line  basis,  unless  the  right-of-use  asset  has  been  impaired,  over  the
reasonably  assured  lease  term  based  on  the  total  lease  payments  and  is  included  in  operating  expenses  in  the  consolidated  statements  of
operations and comprehensive loss.

For operating leases that reflect impairment, the Company will recognize the amortization of the right-of-use asset on a straight-line
basis over the remaining lease term with rent expense still included in operating expenses in the consolidated statements of operations and
comprehensive loss.

For all leases, rent payments that are based on a fixed index or rate at the lease commencement date are included in the measurement

of lease assets and lease liabilities at the lease commencement date.

The  Company  has  elected  the  practical  expedient  to  not  separate  lease  and  non-lease  components.  The  Company’s  non-lease
components are primarily related to property maintenance, which varies based on future outcomes, and thus is recognized in rent expense
when incurred.

Income Taxes

The Company accounts for income taxes using the liability method under which deferred tax assets and liabilities are determined
based on differences between financial reporting and tax bases 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. Valuation allowances are established when necessary to reduce deferred
tax assets to the amount which is more likely than not to be realizable.

The  recognition,  derecognition  and  measurement  of  a  tax  position  is  based  on  management’s  best  judgment  given  the  facts,
circumstances and information available at each reporting date. The Company’s policy is to recognize interest and penalties related to the
underpayment of income taxes as a component of income tax expense. To date, there have been no interest or penalties charged in relation to
the unrecognized tax benefits.

Net Loss per Share Attributable to Common Stockholders

Basic net loss per share attributable to common stockholders is based on the weighted average number of shares of common stock
outstanding during the period. Net loss attributable to common stockholders consists of net loss, as adjusted for any convertible preferred
stock deemed dividends related to beneficial conversion features on this instrument at issuance. During  periods  of  income,  the  Company
allocates participating securities a proportional share of net income, after deduction of any deemed dividends on preferred stock, determined
by  dividing  total  weighted  average  participating  securities  by  the  sum  of  the  total  weighted  average  number  of  common  stock  and
participating securities (the “two-class

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method”). The Company’s convertible preferred stock participates in any dividends declared by the Company on its common stock and are
therefore  considered  to  be  participating  securities.  For  the  years  ended  December  31,  2019  and  2018,  the  Company  did  not  declare  any
dividends.

During  periods  of  loss,  the  Company  allocates  no  loss  to  participating  securities  because  they  have  no  contractual  obligation  to
share in the losses of the Company. Diluted net loss per share attributable to common stockholders is based on the weighted average number
of  shares  outstanding  during  the  period,  adjusted  to  include  the  assumed  conversion  of  preferred  stock,  and  the  exercise  of  certain  stock
options, RSUs, and warrants for common stock. The calculation of diluted loss per share attributable to common stockholders requires that,
to the extent the average market price of the underlying shares for the reporting period exceeds the exercise price of any outstanding options,
RSUs or warrants and the presumed exercise of such securities are dilutive to loss per share attributable to common stockholders for the
period. Adjustments to the denominator are required to reflect the related dilutive shares.

Comprehensive Loss

Comprehensive  loss  is  comprised  of  two  components:  net  loss  and  other  comprehensive  income  (loss).  Other  comprehensive
income (loss) refers to gains and losses that under U.S. GAAP are recorded as an element of stockholders’ equity but are excluded from net
loss. The Company did not record any transactions within other comprehensive income (loss) in the periods presented and, therefore, the net
loss and comprehensive loss were the same for all periods presented.

Recent Accounting Pronouncements

In  June  2016,  the  Financial  Accounting  Standards  Board  (“FASB”)  issued  Accounting  Standards  Update  (“ASU”)  2016-13,
Financial  Instruments-Credit  Losses  (Topic  326):  Measurement  of  Credit  Losses  on  Financial  Instruments. ASU  2016-13  replaced  the
incurred  loss  impairment  methodology  under  current  GAAP  with  a  methodology  that  reflects  expected  credit  losses  and  requires
consideration of a broader range of reasonable and supportable information to inform credit loss estimates. ASU 2016-13 requires use of a
forward-looking  expected  credit  loss  model  for  accounts  receivables,  loans,  and  other  financial  instruments.  Adoption  of  the  standard
requires using a modified retrospective approach through a cumulative-effect adjustment to retained earnings as of the effective date to align
existing credit loss methodology with the new standard. Subsequent to issuing ASU 2016-13, the FASB issued ASU 2018-19, Codification
Improvements to Topic 326, Financial Instruments – Credit Losses, or ASU 2018-19, for the purpose of clarifying certain aspects of ASU
2016-13. In May 2019, the FASB issued ASU 2019-05,  Financial Instruments – Credit Losses (Topic 326): Targeted Transition Relief, or
ASU 2019-05, to provide entities with more flexibility in applying the fair value option on adoption of the credit impairment standard. ASU
2018-19 and ASU 2019-05 have the same effective date and transition requirements as ASU 2016-13. ASU 2016-13 will be effective for all
entities  except  public  companies  that  are  not  smaller  reporting  companies  for  fiscal  years  beginning  after  December  15,  2022,  including
interim periods within those fiscal years, using a modified retrospective approach. Early adoption is permitted. The Company plans to adopt
ASU  2016-13  and  related  updates  as  of  January  1,  2023. We  are  evaluating  the  impact of  adopting  this  new  accounting  guidance on  our
consolidated financial statements.

In  August  2018,  the  FASB  issued  ASU  2018‑13, Fair  Value  Measurement  (Topic  820)  (“ASU  2018-13”),  which  modifies,
removes  and  adds  certain  disclosure  requirements  on  fair  value  measurements  based  on  the  FASB Concepts  Statement,  Conceptual
Framework  for  Financial  Reporting—Chapter  8:  Notes  to  Financial  Statements.  The ASU  is  effective  for  the  Company’s  interim  and
annual  reporting  periods  during  the  year  ending  December  31,  2020,  and  all  annual  and  interim  reporting  period  thereafter.  The
amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop
Level 3 fair value measurements and the narrative description of measurement uncertainty should be applied prospectively for only the most
recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all
periods presented upon their effective date. Early adoption is permitted upon issuance of ASU 2018‑13. An entity is permitted to early adopt
any removed or modified disclosures upon issuance of ASU 2018‑13 and delay adoption of the additional disclosures until their effective
date.  The  Company  early  adopted  the  guidance  related  to  removal  of  disclosures  upon  issuance  of  this ASU  and  will  delay  adoption  of
additional disclosures as permitted under the ASU. We are evaluating the impact  of adopting the rest of the new accounting guidance on our
consolidated financial statements.

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In November 2018, the FASB issued ASU 2018‑18, Collaborative Arrangements (Topic 808) “Clarifying the Interaction between
Topic 808 and Topic 606,” which requires transactions in collaborative arrangements to be accounted for under ASC 606 if the counterparty
is a customer for a good or service that is a distinct unit of account. The new standard also precludes an entity from presenting consideration
from transactions with a collaborator that is not a customer together with revenue recognized from contracts with customers. The ASU is
effective for the Company’s interim and annual reporting periods during the year ending December 31, 2020, and all annual and interim
reporting  period  thereafter.  Early  adoption  is  permitted,  but  no  earlier  than  an  entity’s  adoption  date  of  Topic  606.  This ASU  requires
retrospective adoption to the date the Company adopted ASC 606, January 1, 2018, by recognizing a cumulative-effect adjustment to the
opening  balance  of  retained  earnings  of  the  earliest  annual  period  presented.  The  Company  may  elect  to  apply  the ASU  retrospectively
either to all contracts or only to contracts that are not completed at the date it initially applied ASC 606. The Company is in the process of
accessing the impact of ASU 2018‑18 on its consolidated financial statements, but does not expect the adoption of the guidance will have a
material impact on its consolidated financial statements.

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The
amendments  in ASU  2019-12  are  intended  to  simplify  various  aspects  related  to  accounting  for  income  taxes. ASU  2019-12  removes
certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application.
 ASU  2019-12  is  effective  for  the  Company  beginning  January  1,  2021  with  early  adoption  permitted.  The  Company  is  evaluating  the
impact of adopting this new accounting guidance on its consolidated financial statements.

3. Consolidated Financial Statement Detail

Equity Securities

As of December 31, 2019, equity securities consisted of an investment in Rezolute’s common stock of $0.7 million (see Note 4).
The  Company  recognized  a  gain  of  $0.3  million  due  to  the  change  in  fair  value  of  its  investment  in  Rezolute’s  common  stock  in  other
income, net line item of the consolidated statement of operations and comprehensive loss for the year ended December 31, 2019.

Accrued and Other Liabilities

Accrued and other liabilities consisted of the following (in thousands):

Accrued incentive compensation
Accrued legal and accounting fees
Accrued payroll and other benefits
Interest payable
Accrued restructuring
Liability related to sublease
Other
Total

4. Licensing and Other Arrangements

Novartis – Gevokizumab (VPM087) and IL‑1 Beta

  December 31, 

  December 31, 

2019

2018

  $

  $

332   $
256  
231  
69  
 —  
 —  
57  
945   $

396
1,361
152
36
84
155
198
2,382

On August  24,  2017,  the  Company  and  Novartis  Pharma AG  (“Novartis”)  entered  into  a  license  agreement  (the  “XOMA‑052
License Agreement”)  under  which  the  Company  granted  to  Novartis  an  exclusive,  worldwide,  royalty-bearing  license  to  gevokizumab
(“VPM087”),  a  novel  anti-Interleukin‑1  (“IL‑1”)  beta  allosteric  monoclonal  antibody  and  related  know-how  and  patents  (altogether,  the
“XOMA  IP”).  Under  the  terms  of  the  XOMA-052  License  Agreement,  Novartis  is  solely  responsible  for  the  development  and
commercialization of VPM087 and products containing VPM087.

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On August 24, 2017, pursuant to a separate agreement (the “IL‑1 Target License Agreement”), the Company granted to Novartis
non-exclusive  licenses  to  its  intellectual  property  covering  the  use  of  IL‑1  beta  targeting  antibodies  in  the  treatment  and  prevention  of
cardiovascular disease and other diseases and conditions, and an option to obtain an exclusive license (the “Exclusivity Option”) to such
intellectual property for the treatment and prevention of cardiovascular disease.

Under the XOMA‑052 License Agreement, the Company received total consideration of $30.0 million for the license and rights
granted  to  Novartis.  Of  the  total  consideration,  $15.7  million  was  paid  in  cash  and  $14.3  million  (equal  to  €12.0  million)  was  paid  by
Novartis Institutes for BioMedical Research, Inc. (“NIBR”), on behalf of the Company, to settle the Company’s outstanding debt with Les
Laboratories Servier (“Servier”) (the “Servier Loan”). In addition, NIBR extended the maturity date on the Company’s debt to Novartis. The
Company  also  received  $5.0  million  cash  related  to  the  sale  of  539,131  shares  of  the  Company’s  common  stock,  at  a  purchase  price  of
$9.2742 per share. The fair market value of the common stock issued to Novartis was $4.8 million, based on the closing stock price of $8.93
per share on August 24, 2017, resulting in a $0.2 million premium paid to the Company.

Based  on  the  achievement  of  pre-specified  criteria,  the  Company  is  eligible  to  receive  up  to  $438.0  million  in  development,
regulatory and commercial milestones under the XOMA‑052 License Agreement. The Company is also eligible to receive royalties on sales
of  licensed  products,  which  are  tiered  based  on  sales  levels  and  range  from  the  high  single  digits  to  mid-teens.  Under  the  IL‑1  Target
License Agreement, the Company received an upfront cash payment of $10.0 million and is eligible to receive low single-digit royalties on
canakinumab sales in cardiovascular indications covered by the Company’s patents. Should Novartis exercise the Exclusivity Option, the
royalties on canakinumab sales will increase to the mid-single digits.

Unless  terminated  earlier,  the  XOMA‑052  License Agreement  and  IL‑1  Target  License Agreement  will  remain  in  effect,  on  a
country-by-country  and  product-by-product  basis,  until  Novartis’  royalty  obligations  end.  The  two  agreements  contain  customary
termination  rights  relating  to  material  breach  by  either  party.  Novartis  also  has  a  unilateral  right  to  terminate  the  XOMA‑052  License
Agreement  on  a  product-by-product  and  country-by-country  basis  or  in  its  entirety  on  six  months’  prior  written  notice  to  the  Company.
Under the IL‑1 Target License Agreement, Novartis has a unilateral right to terminate the agreement on a product-by-product and country-
by-country basis or in its entirety upon a prior written notice.

The  XOMA‑052  License Agreement  and  IL‑1  Target  License Agreement  were  accounted  for  as  one  arrangement  because  they
were  entered  into  at  the  same  time  in  contemplation  of  each  other.  The  Company  concluded  that  there  are  multiple  promised  goods  and
services  under  the  combined  arrangement,  including  the  transfer  of  license  to  IL‑1  beta  targeting  antibodies,  and  the  transfer  of  license,
know-how, process, materials and inventory related to the VPM087 antibody, which were determined to represent two distinct performance
obligations. The Company determined that the Exclusivity Option is not an option with material right because the upfront payments to the
Company were not negotiated to provide an incremental discount for the future additional royalties upon exercise of the Exclusivity Option.
Therefore, the Company concluded that the Exclusivity Option is not a performance obligation. The additional royalties will be recognized
as revenue when, and if, Novartis exercises its option because the Company has no further performance obligations at that point.

At the inception of the arrangement, the Company determined that the transaction price under the arrangement was $40.2 million,
which consisted of the $25.7 million upfront cash payments, the $14.3 million Servier Loan payoff and the $0.2 million premium on the
sale of the common stock. The transaction price was allocated to the two performance obligations based on their standalone selling prices.
The  Company  determined  that  the  nature  of  the  two  performance  obligations  is  the  right  to  use  the  licenses  as  they  exist  at  the  point  of
transfer, which occurred when the transfer of materials, process and know-how, and filings to regulatory authority were completed. During
the year ended December 31, 2017, the Company recognized the entire transaction price of $40.2 million as revenue upon completion of the
delivery of the licenses and related materials, process and know-how and filings to regulatory authority.

The Company concluded that the development and regulatory milestone payments are solely dependent on Novartis’ performance
and achievement of specified events. The Company determined that it is not probable that a significant cumulative revenue reversal will not
occur in future periods for these future payments. Therefore, the

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development  and  regulatory  milestones  are  fully  constrained  and  excluded  from  the  transaction  price  as  of  December  31,  2019.  Any
consideration  related  to  commercial  milestones  (including  royalties)  will  be  recognized  when  the  related  sales  occur  as  they  were
determined to relate predominantly to the licenses granted to Novartis and therefore, have also been excluded from the transaction price. At
the end of each reporting period, the Company will update its assessment of whether an estimate of variable consideration is constrained
and update the estimated transaction price accordingly.

As of December 31, 2019 and December 31, 2018, there are no contract assets or contract liabilities related to this arrangement. In
addition,  the  Company  did  not  recognize  any  revenue  related  to  this  arrangement  during  the  years  ended  December  31,  2019  and  2018.
None of the costs to obtain or fulfill the contract were capitalized.

Novartis International – Anti-TGFβ Antibody (NIS793)

On  September  30,  2015,  the  Company  and  Novartis  International  Pharmaceutical  Ltd.  (“Novartis  International”)  entered  into  a
license agreement (the “License Agreement”) under which the Company granted Novartis International an exclusive, world-wide, royalty-
bearing license to the Company’s anti-transforming growth factor beta (“TGFβ”) antibody program (now “NIS793”). Under the terms of the
License Agreement, Novartis International has worldwide rights to NIS793 and is responsible for the development and commercialization of
antibodies and products containing antibodies arising from NIS793. Unless terminated earlier, the License Agreement will remain in effect,
on  a  country-by-country  and  product-by-product  basis,  until  Novartis  International’s  royalty  obligations  end.  The  License  Agreement
contains  customary  termination  rights  relating  to  material  breach  by  either  party.  Novartis  International  also  has  a  unilateral  right  to
terminate the License Agreement on an antibody-by-antibody and country-by-country basis or in its entirety on one hundred eighty days’
notice.

The Company concluded that there are multiple promised goods and services under the License Agreement, including the transfer
of  license,  regulatory  services  and  transfer  of  materials,  process  and  know-how,  which  were  determined  to  represent  one  combined
performance obligation. The Company recognized the entire upfront payment of $37.0 million as revenue in the consolidated statement of
comprehensive loss in 2015 as it had completed its performance obligations as of December 31, 2015.

During  the  year  ended  December  31,  2017,  Novartis  International  achieved  a  clinical  development  milestone  pursuant  to  the
License Agreement, and as a result, the Company earned a $10.0 million milestone payment which was recognized as license fees in the
consolidated  statement  of  operations  and  comprehensive  income.  The  Company  is  eligible  to  receive  up  to  a  total  of  $470.0  million  in
development, regulatory and commercial milestones under the anti-TGFβ antibody program.

The Company concluded that the development and regulatory milestone payments are solely dependent on Novartis’ performance
and achievement of the specified events. The Company determined that it is not probable that a significant cumulative revenue reversal will
not occur in future periods for these future payments. Therefore, the remaining development and regulatory milestones are fully constrained
and excluded from the transaction price as of December 31, 2019. Any consideration related to commercial milestones (including royalties)
will  be  recognized  when  the  related  sales  occur  as  they  were  determined  to  relate  predominantly  to  the  licenses  granted  to  Novartis  and
therefore, have also been excluded from the transaction price. At the end of each reporting period, the Company will update its assessment
of whether an estimate of variable consideration is constrained and update the estimated transaction price accordingly.

The Company is also eligible to receive royalties on sales of licensed products, which are tiered based on sales levels and range
from a mid-single digit percentage rate to up to a low double-digit percentage rate. Novartis International’s obligation to pay royalties with
respect to a particular product and country will continue for the longer of the date of expiration of the last valid patent claim covering the
product in that country, or ten years from the date of the first commercial sale of the product in that country.

As of December 31, 2019 and December 31, 2018, there are no contract assets or contract liabilities related to this arrangement.
None of the costs to obtain or fulfill the contract were capitalized. No revenue was recognized for the years ended December 31, 2019 and
December 31, 2018.

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Rezolute

On December 6, 2017, the Company entered into a license agreement with Rezolute pursuant to which the Company granted an
exclusive global license to Rezolute to develop and commercialize X358 (now “RZ358”) for all indications. The Company and Rezolute
also  entered  into  a  common  stock  purchase  agreement  pursuant  to  which  Rezolute  agreed  to  issue  to  the  Company,  as  consideration  for
receiving the license for RZ358, a certain number of its common stock related to its future financing activities.

Under  the  terms  of  the  license  agreement,  Rezolute  is  responsible  for  all  development,  regulatory,  manufacturing  and
commercialization  activities  associated  with  RZ358  and  is  required  to  make  certain  development,  regulatory  and  commercial  milestone
payments to the Company of up to $232.0 million in the aggregate based on the achievement of pre-specified criteria. Under the license
agreement, the Company is also eligible to receive royalties ranging from the high single digits to the mid-teens based upon annual net sales
of any commercial product incorporating RZ358. Rezolute is obligated to take customary steps to advance RZ358, including using diligent
efforts to commence the next clinical study for RZ358 by a certain deadline and to meet certain spending requirements on an annual basis
for  the  program  until  a  marketing  approval  application  for  RZ358  is  accepted  by  the  FDA.  Rezolute’s  obligation  to  pay  royalties  with
respect to a particular RZ358 product and country will continue for the longer of the date of expiration of the last valid patent claim covering
the product in that country, or twelve years from the date of the first commercial sale of the product in that country.

Under the terms of the license agreement, the Company is eligible to receive a low single digit royalty on sales of Rezolute’s other
non-RZ358  products  from  its  current  programs.  Rezolute’s  obligation  to  pay  royalties  with  respect  to  a  particular  Rezolute  product  and
country will continue for the longer of twelve years from the date of the first commercial sale of the product in that country or for so long as
Rezolute or its licensee is selling such product in such country (the “Royalty Term”), provided that any such licensee royalty will terminate
upon the termination of the licensee’s obligation to make payments to Rezolute based on sales of such product in such country. Rezolute’s
future royalty obligations will be reduced by 20% at any time during the Royalty Term that a valid XOMA patent claim is not outstanding.

Rezolute  had  an  option  through  June  1,  2019  to  obtain  an  exclusive  license  for  their  choice  of  one  of  the  Company’s  preclinical
monoclonal antibody fragments, including X129 (the “Additional Product Option”), in exchange for a $1.0 million upfront option fee and
additional clinical, regulatory and commercial milestone payments to the Company of up to $237.0 million in the aggregate based on the
achievement of pre-specified criteria as well as royalties ranging from the high single digits to the mid-teens based on annual net sales. On
June 1, 2019, Rezolute’s right to the Additional Product Option expired unexercised.

The license agreement contains customary termination rights relating to material breach by either party. Rezolute also has a unilateral
right to terminate the license agreement in its entirety on ninety days’ notice at any time. The Company has the right to terminate the license
agreement if Rezolute challenges the licensed patents.

Under  the  license  agreement  and  common  stock  purchase  agreement,  no  consideration  was  exchanged  upon  execution  of  the
arrangement. In consideration for receiving the license for RZ358, Rezolute agreed to issue shares of its common stock and pay cash to the
Company upon the occurrence of Rezolute’s financing activities and the amounts to be paid to be based on the timing of those activities.

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Rezolute License Agreement - First Amendment

In March 2018, the Company and Rezolute amended the license agreement and common stock purchase agreement. Pursuant to the
as-amended terms of the license agreement and common stock purchase agreement, the Company was eligible to receive $6.0 million in
cash,  $8.5  million  of  Rezolute’s  common  stock,  and  7,000,000  shares  of  Rezolute’s  common  stock,  contingent  on  the  completion  of
Rezolute’s financing activities. Further, in the event that Rezolute did not complete a financing that raised at least $20.0 million in aggregate
gross proceeds (“Qualified Financing”) by March 31, 2019 (the “2019 Closing”), the Company would have received an additional number
of shares of Rezolute’s common stock equal to $8.5 million divided by the weighted average of the closing bid and ask prices or the average
closing prices of Rezolute’s common stock on the ten-day trading period prior to March 31, 2019. Finally, in the event that Rezolute was
unable to complete a Qualified Financing by March 31, 2020, the Company would have been eligible to receive $15.0 million in cash in
order  for  Rezolute  to  maintain  the  license.  Under  the  common  stock  purchase  agreement,  Rezolute  granted  the  Company  the  right  and
option to sell the greater of (i) 5,000,000 shares of common stock or (ii) one third of the aggregate shares held by the Company upon failure
by Rezolute to list its shares of its common stock on the Nasdaq Stock Market or a similar national exchange on or prior to December 31,
2018.

During the three months ended March 31, 2018, the Company completed the delivery of the license and related materials, product
data/filing, process and know-how to Rezolute. However, the Company determined that it was not probable that the Company would collect
substantially all of the consideration to which it was entitled in exchange for the goods and services transferred to Rezolute. Therefore, the
Company determined no contract existed as of March 31, 2018 and no revenue was recognized during the three months ended March 31,
2018 under the arrangement. 

Rezolute  completed  the  Interim  Financing  Closing  and  the  Initial  Closing  financing  activities,  as  defined  in  the  common  stock
purchase agreement, during the first and second quarter of 2018, respectively. As a result, XOMA received 8,093,010 shares of Rezolute’s
common stock and cash of $0.5 million in April 2018. Under the license agreement, XOMA was also entitled to receive $0.3 million of
reimbursable  technology  transfer  expenses  from  Rezolute.  The  Company  concluded  that  the  payment  associated  with  the  Initial  Closing
represented substantially all consideration for the delivered license and technology to Rezolute. Therefore, the Company determined that a
contract existed between Rezolute and XOMA under ASC 606 on April 3, 2018.

The license agreement and common stock purchase agreement were accounted for as one arrangement because they were entered into
at the same time in contemplation of each other. The Company concluded that there were multiple promised goods and services under the
combined arrangement, including the license to RZ358, the transfer of RZ358 materials and product data/filing, and the transfer of process
and know-how related to RZ358, which were determined to represent one combined performance obligation. The Company determined that
the Additional Product Option was not an option with material right because there was no upfront consideration to the Company that would
result to an incremental discount for the future opt in payments. Therefore, the Company concluded that the Additional Product Option was
not a performance obligation. On June 1, 2019, Rezolute’s right to the Additional Product Option expired unexercised.

On April 3, 2018, the Company determined that the transaction price under the arrangement was $1.8 million, which consisted of the
8,093,010 shares of Rezolute’s common stock valued at $1.0 million, $0.5 million in cash, and reimbursable technology transfer expenses
of $0.3 million. During the year ended December 31, 2018, the Company recognized the entire transaction price of $1.8 million as revenue
upon completion of the delivery of the licenses and related materials, product data/filing, process and know-how. The change in fair value of
Rezolute’s  common  stock  after  the  contract  inception  date  was  due  to  the  form  of  the  consideration  and  therefore,  not  included  in  the
transaction price pursuant to the accounting guidance. The Company accounts for the change in the fair value of its investment in Rezolute’s
common stock in the other income (expense), net line item of the consolidated statement of operations and comprehensive loss.

The Company concluded that the development and regulatory milestone payments are solely dependent on Rezolute’s performance
and achievement of the specified events. The Company determined that it is not probable that a significant cumulative revenue reversal will
not  occur  in  future  periods  for  these  future  payments.  Therefore,  the  development  and  regulatory  milestones  are  fully  constrained  and
excluded from the transaction price as of the inception of the arrangement. Any consideration related to commercial milestones (including
royalties) will be recognized when the related sales occur as they were determined to relate predominantly to the licenses granted to Rezolute
and  therefore,  have  also  been  excluded  from  the  transaction  price.  At  the  end  of  each  reporting  period,  the  Company  will  update  its
assessment of whether the estimate of variable consideration is constrained and update the estimated transaction price accordingly.

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Rezolute License Agreement - Second Amendment

On January 7, 2019, the Company and Rezolute further amended the license agreement and common stock purchase agreement. The
parties  agreed  to  replace  the  issuance  of  common  stock  valued  at  $8.5  million  to  XOMA  upon  closing  of  a  Qualified  Financing  with  a
requirement  that  Rezolute  make  five  future  cash  payments  to  XOMA  totaling  $8.5  million  through  September  2020  (the  “Future  Cash
Payments”).  The  amendment  also  provides  for  early  payment  of  the  Future  Cash  Payments  (only  until  the  $8.5  million  is  reached)  by
making cash payments to XOMA equal to 15% of the net proceeds of each future financing following the closing of the Qualified Financing,
with  such  payments  to  be  credited  against  any  remaining  unpaid  Future  Cash  Payments  in  reverse  order  of  their  future  payment  date.  In
addition,  the  license  agreement  amendment  revised  the  amount  Rezolute  is  required  to  expend  on  development  of  RZ358  and  related
licensed  products,  revised  provisions  with  respect  to  Rezolute’s  diligence  efforts  in  conducting  clinical  studies  and  eliminated  XOMA’s
right to appoint a member to Rezolute’s board of directors.

The  common  stock  purchase  agreement  was  amended  to  remove  certain  provisions  related  to  the  issuance  of  equity  to  XOMA  in
accordance  with  the  new  provisions  regarding  the  Future  Cash  Payments  in  the  license  agreement.  Lastly,  the  common  stock  purchase
agreement was amended to provide the Company the right and option to sell up to 5,000,000 shares of Rezolute’s common stock currently
held by XOMA back to Rezolute upon failure by Rezolute to list its shares of its common stock on the Nasdaq Stock Market or a similar
national exchange on or prior to December 31, 2019. As of December 31, 2019, Rezolute failed to list its shares of common stock on the
Nasdaq Stock Market or a similar exchange. Up to 2,500,000 shares may be sold back to Rezolute during calendar year 2020.

On January 30, 2019, Rezolute closed a preferred stock financing for gross proceeds of $25.0 million, which triggered the Qualified
Financing  event  defined  under  the  amended  common  stock  purchase  agreement  resulting  in  cash  consideration  due  to  XOMA  of  $5.5
million.  In  addition,  the  Company  received  from  Rezolute  a  reimbursable  technology  transfer  expense  of  $0.3  million.  The  cash
consideration and technology reimbursement were received in February 2019.

 As of March 31, 2019, Rezolute completed all financing activities, as defined in the license agreement and common stock purchase
agreement,  and  the  Company  is  eligible  to  receive  $8.5  million  in  Future  Cash  Payments  through  September  2020  (in  addition  to  any
clinical,  regulatory  and  annual  net  sales  milestone  payments  and  royalties).  The  Company  concluded  that  the  Future  Cash  Payments  are
dependent  on  Rezolute’s  ability  to  raise  additional  capital  through  future  financing  activities.  The  Company  applied  the  variable
consideration constraint to the Future Cash Payments and determined that it was probable that a significant revenue reversal would not occur
in future periods for only $2.5 million of the total amount as of March 31, 2019 and recognized $2.5 million revenue in that quarter.   

In  July  and August  2019,  Rezolute  received  additional  cash  through  two  common  stock  financing  events,  which  triggered  early
payment of $3.4 million of the unrecognized $6.0 million of total Future Cash Payments. In addition, the Company received the $1.5 million
payment  due  September  30,  2019,  resulting  in  a  total  of  $4.9  million  cash  received  from  Rezolute  in  the  third  quarter  of  2019.  The
Company  re-assessed  the  outstanding  $3.6  million  of  Future  Cash  Payments  and  determined  that  a  significant  revenue  reversal  was  not
probable due to Rezolute’s recent common stock financing events. Therefore, in the third quarter of 2019, the Company recognized $6.0
million as revenue related to the remaining Future Cash Payments. In the fourth quarter of 2019, the Company received the scheduled $1.0
million  Future  Cash  Payment  from  Rezolute.  As  of  December  31,  2019,  the  Company  has  an  outstanding  receivable  of  $2.6  million
representing its current estimate of the Future Cash Payments expected to be received from Rezolute.

During the year ended December 31, 2019, the Company recognized $14.0 million as revenue from Rezolute, which consisted of the
$5.5 million consideration paid upon the Qualified Financing event and $8.5 million Future Cash Payments. As of December 31, 2019 and
2018, there were no contract assets or contract liabilities related to this arrangement. None of the costs to obtain or fulfill the contract were
capitalized.

The  Company  reassessed  the  development  and  regulatory  milestones  and  concluded  that  such  variable  consideration  is  fully

constrained and excluded from the transaction price as of December 31, 2019 and 2018.     

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Janssen Biotech

The  Company  and  Janssen  Biotech,  Inc.  (“Janssen”)  were  parties  to  a  license  agreement  which  was  terminated  in  2017.  In August
2019, the Company and Janssen entered into a new agreement pursuant to which the Company granted a non-exclusive license to Janssen to
develop and commercialize certain drug candidates under the XOMA patents and know-how. Under the new agreement, Janssen made a
one-time payment of $2.5 million to XOMA. Additionally, for each drug candidate, the Company is entitled to receive milestone payments
of up to $3.0 million upon Janssen’s achievement of certain clinical development and regulatory approval events. Upon commercialization,
the  Company  is  eligible  to  receive  0.75%  royalty  on  net  sales  of  each  product.  Janssen’s  obligation  to  pay  royalties  with  respect  to  a
particular product and country will continue until the eighth-year and sixth-month anniversary of the first commercial sale of the product in
such country. The new agreement will remain in effect unless terminated by mutual written agreement of the parties.

The Company concluded that the new agreement should be accounted for separately from any prior arrangements with Janssen and
that the license grant is the only performance obligation under the new agreement. The Company recognized the entire one-time payment of
$2.5 million as revenue in the consolidated statement of comprehensive income for the year ended December 31, 2019 as it had completed
its performance obligation.

The Company concluded that the development and regulatory milestone payments are solely dependent on Janssen’s performance and
achievement of specified events and thus it is not probable that a significant cumulative revenue reversal will not occur in future periods for
these future payments. Therefore, the development and regulatory milestones are fully constrained and excluded from the transaction price
as of December 31, 2019. Any consideration related to royalties will be recognized when the related sales occur as they were determined to
relate predominantly to the license granted to Janssen and therefore, have also been excluded from the transaction price. At the end of each
reporting  period,  the  Company  will  update  its  assessment  of  whether  an  estimate  of  variable  consideration  is  constrained  and  update  the
estimated transaction price accordingly.

As of December 31, 2019, there were no contract assets or contract liabilities related to this arrangement. None of the costs to obtain

or fulfill the contract were capitalized.

NIAID

Prior to the sale of the Company’s biodefense business discussed in Note 7, the Company performed services under a $64.8 million
multiple-year  contract  funded  with  federal  funds  from  NIAID  (Contract  No.  HHSN272200800028C),  for  development  of  anti-botulinum
antibody product candidates. The contract work was being performed on a cost plus fixed fee basis over a three-year period. The Company
recognized  revenue  under  the  arrangement  as  the  services  were  performed  on  a  proportional  performance  basis.  Consistent  with  the
Company’s other contracts with the U.S. government, invoices were provisional until finalized. The Company operated under provisional
rates from 2010 through 2014, subject to adjustment based on actual rates upon agreement with the government. In 2014, upon completion
of NIAID’s review of hours and external expenses, XOMA agreed to exclude certain hours and external expenses resulting in a $0.4 million
receivable and $0.8 million deferred revenue balances. As of December 31, 2017, the Company wrote off the $0.4 million receivable from
NIAID  as  the  likelihood  of  collection  is  remote.  The  Company  classified  $0.8  million  as  contract  liabilities  on  the  consolidated  balance
sheets as of December 31, 2019 and December 31, 2018.

Sale of Future Revenue Streams

On  December  21,  2016,  the  Company  entered  into  two  Royalty  Interest Acquisition Agreements  (together,  the  “Royalty  Sale
Agreements”) with HCRP. Under the first Royalty Sale Agreement, the Company sold its right to receive milestone payments and royalties
on  future  sales  of  products  subject  to  a  License  Agreement,  dated  August  18,  2005,  between  XOMA  and  Wyeth  Pharmaceuticals
(subsequently acquired by Pfizer, Inc. (“Pfizer”)) for an upfront cash payment of $6.5 million, plus potential additional payments totaling
$4.0 million in the event three specified net sales milestones were met in 2017, 2018 and 2019. Based on actual sales, 2017, 2018, and 2019
sales milestones were not achieved. Under the second Royalty Sale Agreement entered into in December 2016, the Company sold its right to
receive royalties under an Amended and Restated License Agreement dated October 27, 2006 between XOMA and Dyax Corp. for a cash
payment of $11.5 million.

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The  Company  classified  the  proceeds  received  from  HCRP  as  unearned  revenue,  to  be  recognized  as  revenue  under  units-of-
revenue  method  over  the  life  of  the  license  agreements  because  of  the  Company’s  limited  continuing  involvement  in  the  Acquisition
Agreements. Such limited continuing involvement is related to the Company’s undertaking to cooperate with HCRP in the event of litigation
or a dispute related to the license agreements. Because the transaction was structured as a non-cancellable sale, the Company does not have
significant continuing involvement in the generation of the cash flows due to HCRP and there are no guaranteed rates of return to HCRP, the
Company  recorded  the  total  proceeds  of  $18.0  million  as  unearned  revenue  recognized  under  units-of-revenue  method.  The  Company
allocated the total proceeds between the two Royalty Sale Agreements based on the relative fair value of expected payments to be made to
HCRP under the license agreements. The unearned revenue is being recognized as revenue over the life of the underlying license agreements
under  the  "units-of-revenue"  method.  Under  this  method,  amortization  for  a  reporting  period  is  calculated  by  computing  a  ratio  of  the
allocated proceeds received from HCRP to the payments expected to be made by the licensees to HCRP over the term of the Acquisition
Agreements, and then applying that ratio to the period’s cash payment. During the third quarter of 2018, the Shire product underlying the
Dyax Corp. license agreement was approved, and the Company began recognizing revenue under the units-of-revenue method due to sales
of the approved product.

The  Company  recognized  $1.1  million  and  $0.2  million  as  revenue  under  units-of-revenue  method  under  these  arrangements
during the years ended December 31, 2019 and December 31, 2018, respectively. As of December 31, 2018, the Company classified $0.5
million  and  $17.0  million  as  current  and  non-current  unearned  revenue  recognized  under  units-of-revenue  method,  respectively. As  of
December 31, 2019, the current and non-current portion of the remaining unearned revenue recognized under units-of-revenue method was
$1.1 million and $15.3 million, respectively.

5. Royalty Purchase Agreements

Royalty Purchase Agreement with Agenus, Inc.

On September 20, 2018, the Company entered into a Royalty Purchase Agreement (the “Agenus Royalty Purchase Agreement”) with
Agenus, Inc., and certain affiliates (collectively, “Agenus”). Under the Agenus Royalty Purchase Agreement, the Company purchased from
Agenus  the  right  to  receive  33%  of  the  future  royalties  on  six  Incyte  immuno-oncology  assets,  currently  in  development,  due  to Agenus
from  Incyte  Europe  Sarl  (“Incyte”)  (net  of  certain  royalties  payable  by Agenus  to  a  third  party)  and  10%  of  all  future  developmental,
regulatory  and  commercial  milestones  related  to  these  assets.  However,  the  Company  did  not  have  a  right  to  the  expected  near-term
milestone associated with the entry of INCAGN2390 (anti-TIM-3) into its Phase 1 clinical trial. The future royalties due to Agenus from
Incyte are based on low-single to mid-teen digit percentage of applicable net sales.

In addition, the Company purchased from Agenus the right to receive 33% of the future royalties on MK-4830, an immuno-oncology
product  currently  in  clinical  development,  due  to  Agenus  from  Merck  Sharp  &  Dohme  Corp.  (“Merck”)  and  10%  of  all  future
developmental, regulatory and commercial milestones related to this asset. The future royalties due to Agenus from Merck are based on low
single digit percentage of applicable net sales. Pursuant to the Agenus Royalty Purchase Agreement, the Company’s share in future potential
development, regulatory and commercial milestones is up to $59.5 million. There is no limit on the amount of future royalties on sales that
the Company may receive under the agreements.

Under the terms of the Royalty Purchase Agreement, the Company paid Agenus $15.0 million. The Company financed $7.5 million of

the purchase price with a term loan under its Loan and Security Agreement with Silicon Valley Bank (“SVB”) (see Note 10).

As of December 31, 2019, there were no changes to the previously recorded $15.0 million as long-term royalty receivables in its
consolidated balance sheet. The company continues to assess that no payments are probable to be received under this agreement in the near
term. Under the cost recovery method, the Company does not expect to recognize any income related to milestones and royalties received
until the investment of $15.0 million has been fully collected.

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Royalty Purchase Agreement with Bioasis Technologies, Inc.

On February 25, 2019, the Company entered into a Royalty Purchase Agreement (the “Bioasis Royalty Purchase Agreement”) with
Bioasis  Technologies,  Inc.  and  certain  affiliates  (collectively  “Bioasis”).  Under  the  Bioasis  Royalty  Purchase Agreement,  the  Company
purchased potential future milestone and royalty rights from Bioasis for product candidates that are being developed pursuant to a license
agreement between Bioasis and Prothena Biosciences Limited. In addition, the Company was granted options to purchase a 1% royalty right
on the next two license agreements entered into between Bioasis and third-party licensees subject to certain payments and conditions as well
as a right of first negotiation on subsequent Bioasis license agreements with third parties. Upon exercise of the option related to the second
license agreement executed by Bioasis, the Company may be obligated to pay up to $0.3 million per licensed product. Upon exercise of the
option  related  to  the  third  license  agreement  executed  by  Bioasis,  the  Company  may  be  obligated  to  pay  up  to  $0.4  million  per  licensed
product.

Under the terms of the Bioasis Royalty Purchase Agreement, the Company paid $0.3 million and will make contingent future cash
payments of up to $0.2 million to Bioasis as the licensed product candidates reach certain development milestones (the “Bioasis Contingent
Consideration”).

At the inception of the agreement, the Company recorded $0.4 million as long-term royalty receivables in its consolidated balance
sheet, including the estimated fair value of the Bioasis Contingent Consideration of $0.1 million. Future changes in the estimated fair value
of the contingent consideration will be recognized in the other income (expense), net line item of the consolidated statement of operations
and comprehensive loss. As of December 31, 2019, there was no change in the fair value of the contingent consideration from its initial
value and no amounts were paid during the year ended December 31, 2019.

Under the cost recovery method, the Company does not expect to recognize any income related to milestones and royalties received

until the investment has been fully collected. No impairment was recorded as of December 31, 2019.

Royalty Purchase Agreement with Aronora, Inc.

On April  7,  2019,  the  Company  entered  into  a  Royalty  Purchase Agreement  (the  “Aronora  Royalty  Purchase Agreement”)  with
Aronora, Inc. (“Aronora”), which closed on June 26, 2019. Under the Aronora Royalty Purchase Agreement, the Company purchased from
Aronora the right to receive future royalties and a portion of upfront, milestone, and option payments (the “Non-Royalties”) related to five
anti-thrombotic hematology drug candidates. Three candidates are subject to Aronora’s collaboration with Bayer Pharma AG (“Bayer”) (the
“Bayer  Products”),  including  one  which  is  subject  to  an  exclusive  license  option  by  Bayer.  The  Company  will  receive  100%  of  future
royalties and 10% of future Non-Royalties from these Bayer Products. The other two candidates are unpartnered (the “non-Bayer Products”)
for which the Company will receive low-single digit percentage of net sales and 10% of Non-Royalties. The future payment percentage for
Non-Royalties will be reduced from 10% to 5% upon the Company’s receipt of two times the total cumulative amount of consideration paid
by the Company to Aronora.

 Under the terms of the Aronora Royalty Purchase Agreement, the Company paid Aronora a $6.0 million upfront payment at the close
of  the  transaction.  The  Company  financed  $3.0  million  of  the  upfront  payment  with  a  term  loan  under  its  Loan  and  Security Agreement
with SVB (see Note 10). The Company was required to make a contingent future cash payment of $1.0 million for each of the three Bayer
Products that were active on September 1, 2019 (up to a total of $3.0 million, the “Aronora Contingent Consideration”). Pursuant to the
Aronora  Royalty  Purchase  Agreement,  if  the  Company  receives  $250.0  million  in  cumulative  royalties  on  net  sales  per  product,  the
Company  will  be  required  to  pay  associated  tiered  milestone  payments  to Aronora  in  an  aggregate  amount  of  up  to  $85.0  million  per
product (the “Royalty Milestones”). The Royalty Milestones are paid based upon various royalty tiers prior to reaching $250.0 million in
cumulative royalties on net sales per product. Royalties per product in excess of $250.0 million are retained by the Company. 

At the inception of the agreement, the Company recorded $9.0 million as long-term royalty receivables in its consolidated balance
sheet,  including  the  estimated  fair  value  of  the  contingent  consideration  of  $3.0  million  for  the Aronora  Contingent  Consideration.  In
September 2019, the Company paid the $3.0 million contingent consideration to Aronora. During the year ended December 31, 2019, there
was no change in the fair value of the contingent consideration from its initial value. As the Company receives royalties from Aronora for a
product, the Company will recognize the liability for future Royalty Milestones for such product when probable and estimable.

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  Under the cost recovery method, the Company does not expect to recognize any income related to milestones and royalties received

until the investment has been fully collected. No impairment was recorded as of December 31, 2019. 

Royalty Purchase Agreement with Palobiofarma, S.L.

On  September  26,  2019,  the  Company  entered  into  a  Royalty  Purchase Agreement  (the  “Palo  Royalty  Purchase Agreement”)  with
Palobiofarma, S.L. (“Palo”), a company organized and existing under the laws of Spain. Pursuant to the Palo Royalty Purchase Agreement,
the Company acquired the rights to potential royalty payments in low single digit percentages of aggregate Net Sales (as defined in the Palo
Royalty Purchase Agreement) associated with six drug candidates in various clinical development stages, targeting the adenosine pathway
with potential applications in solid tumors, non-Hodgkin’s lymphoma, asthma/chronic obstructive pulmonary disease, inflammatory bowel
disease,  idiopathic  pulmonary  fibrosis,  lung  cancer,  psoriasis  and  nonalcoholic  steatohepatitis  and  other  indications  (the  “Palo  Licensed
Products”)  that  are  being  developed  by  Palo.  Novartis  (the  “Licensee”)  is  a  development  partner  on  NIR178,  one  of  the  Palo  Licensed
Products, and such NIR178 is being developed pursuant to a license agreement between Palo and the Licensee.

Under the terms of the Palo Royalty Purchase Agreement, the Company paid Palo a $10.0 million payment at the close of the transaction
which  occurred  simultaneously  upon  parties’  entrance  in  the  Palo  Royalty  Purchase Agreement  on  September  26,  2019.  The  Company
financed $5.0 million of the payment with a term loan under its Loan and Security Agreement with SVB (see Note 10).

At  the  inception  of  the  agreement,  the  Company  recorded  $10.0  million  as  long-term  royalty  receivables  in  its  consolidated  balance
sheet.  Under  the  cost  recovery  method,  the  Company  does  not  expect  to  recognize  any  income  related  to  royalties  received  until  the
investment has been fully collected. No impairment was recorded as of December 31, 2019.

The following table summarizes the acquisition of royalty rights as of December 31, 2019 (in thousands):

Balance at January 1, 2018

Acquisition of royalty rights:

Agenus

Balance at December 31, 2018
Acquisition of royalty rights:

Bioasis
Aronora
Palobiofarma

Balance at December 31, 2019

6. Fair Value Measurements

     $

 —

     $

$

15,000
15,000

375
9,000
10,000
34,375

The Company records its financial assets and liabilities at fair value. The carrying amounts of certain of the Company’s financial
instruments, including cash, trade receivables and accounts payable, approximate their fair value due to their short maturities. Fair value is
defined as the exchange price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between
market participants at the measurement date. The accounting guidance for fair value establishes a framework for measuring fair value and a
fair value hierarchy that prioritizes the inputs used in valuation techniques. The accounting standard describes a fair value hierarchy based
on three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value
which are the following:

Level 1 – Observable inputs, such as quoted prices in active markets for identical assets or liabilities.

Level 2 – Observable inputs, either directly or indirectly, other than quoted prices in active markets for identical assets or liabilities,
such as quoted prices in active markets for similar assets or liabilities, quoted prices in markets

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that are not active or other inputs that are not observable or can be corroborated by observable market data for substantially the full
term of the assets or liabilities.

Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets
or liabilities; therefore, requiring an entity to develop its own valuation techniques and assumptions.

The following tables set forth the Company’s fair value hierarchy for its financial assets and liabilities measured at fair value on a

recurring basis as follows (in thousands):

Fair Value Measurements at December 31, 2019 Using

Quoted Prices in
Active Markets for  

Identical Assets
(Level 1)

Significant Other  

Observable
Inputs
(Level 2)

Significant
  Unobservable  
Inputs
(Level 3)

Total

Assets:

Equity securities

Liabilities:

Contingent consideration

  $

  $

 —   $

 —   $

 —   $

681   $

681

 —   $

75   $

75

Fair Value Measurements at December 31, 2018 Using

Quoted Prices in
Active Markets for
Identical Assets
(Level 1)

Significant Other  

Observable
Inputs
(Level 2)

Significant
  Unobservable  
Inputs
(Level 3)

Total

Assets:

Equity securities

  $

 —   $

 —   $

392   $

392

During the years ended December 31, 2019 and 2018, there were no transfers between Level 1, Level 2, or Level 3 assets reported

at fair value on a recurring basis and the valuation techniques used did not change compared to the Company’s established practice.

Equity Securities

The  following  table  provides  a  summary  of  changes  in  the  estimated  fair  value  of  the  Company’s  Level  3  financial  assets  for

the year ended December 31, 2019 (in thousands):

Balance at December 31, 2018
Change in fair value
Balance at December 31, 2019

     $

  $

392
289
681

The  equity  securities  consisted  of  an  investment  in  Rezolute’s  common  stock  and  are  classified  as  long-term  assets  on  the
consolidated balance sheet as of December 31, 2018 and 2019. The equity securities are revalued each reporting period with changes in fair
value recorded in the other income (expense), net line item of the consolidated statements of operations and comprehensive loss.

As of December 31, 2018, the Company and its valuation specialist used a probability-weighted expected return model to measure
the fair value of the securities. This valuation methodology is based on unobservable estimates and judgements, and therefore is classified as
a Level 3 fair value measurement. Scenarios and probabilities were based on the Company’s management estimates and were incorporated
into the determination of the fair value of the equity securities.

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The estimated fair value of the equity securities was calculated based on the following assumptions as of December 31, 2018:

Discount for lack of marketability
Estimated time to liquidity of shares

Scenario probabilities
Liquidation
Near-term sale
Near-term financing

35 %  

  1.45 years  

20 %  
 5 %  
75 %  

In the first quarter of 2019, the Company updated the methodology used to value the equity securities due to Rezolute’s completion of
a Qualified Financing (see Note 4). As of December 31, 2019, the Company and its valuation specialist valued the equity securities using
the closing price for Rezolute’s common stock traded on the over-the-counter exchange and adjusted for an illiquidity discount. The inputs
used to calculate the illiquidity discount are based on observable and unobservable estimates and judgments and therefore is classified as a
Level 3 fair value measurement. As the Company has the right and option to sell up to 5,000,000 shares of Rezolute’s common stock back
to  Rezolute  after  December  31,  2019  (see  Note  4),  the  fair  value  of  the  equity  securities  was  determined  by  dividing  the  total  shares  of
Rezolute’s common stock held by the Company into two tranches based on the estimated time to a potential liquidity event.

The estimated fair value of the equity securities was calculated based on the following assumptions as of December 31, 2019.

Closing common stock price on the Over-the-counter (OTC) exchange

  $

0.12  

Tranche 1:
Discount for lack of marketability
Estimated time to liquidity of shares

Tranche 2:
Discount for lack of marketability
Estimated time to liquidity of shares

13 %  

  0.25 years  

33 %

1.5 years  

Changes  in  any  of  the  assumptions  related  to  the  unobservable  inputs  identified  above  may  change  the  fair  value  of  the  equity

securities.

Contingent Consideration

The  estimated  fair  value  of  the  contingent  consideration  liability  at  the  inception  of  the  Bioasis  Royalty  Purchase  Agreement
represents the future consideration that is contingent upon the achievement of specified development milestones for a product candidate. The
fair  value  measurement  is  based  on  significant  Level  3  inputs  such  as  anticipated  timelines  and  probability  of  achieving  development
milestones of each licensed product candidate. Changes in the fair value of the liability for contingent consideration will be recorded in the
other income (expense), net line item of the consolidated statements of operations and comprehensive loss until settlement. As of December
31, 2019, there were no changes in the estimated fair value of the contingent consideration from its initial value of $0.1 million.

The  estimated  fair  value  of  the  contingent  consideration  liability  at  the  inception  of  the  Aronora  Royalty  Purchase  Agreement
represented the future consideration that was contingent upon the active status of Bayer Product programs on September 1, 2019. The fair
value  measurement  for  the  contingent  consideration  was  based  on  significant  Level  3  inputs  such  as  management’s  expectation  for  the
success and development of each of the products. As of December 31, 2019, there was no outstanding balance remaining, as the Company
paid the full $3.0 million contingent consideration to Aronora in September 2019.

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Debt

The estimated fair value of the Company’s outstanding debt is estimated using the net present value of the payments, discounted at
an interest rate that is consistent with market interest rates, which is a Level 2 input. The carrying amount and the estimated fair value of the
Company’s outstanding long-term debt at December 31, 2019 and 2018, are as follows (in thousands):

December 31, 2019

December 31, 2018

SVB Loans
Novartis note
Total

7. Dispositions

     Carrying Amount      Fair Value      Carrying Amount      Fair Value
7,281
  $
14,825
15,193  
22,479   $ 22,106

16,374   $ 16,048   $
15,903  
32,277   $ 31,761   $

  15,713  

7,286   $

  $

On November 4, 2015, XOMA and Ology Bioservices, Inc. (“Ology Bioservices”) entered into an asset purchase agreement under
which  Ology  Bioservices  agreed  to  acquire  XOMA’s  biodefense  business  and  related  assets  (including  certain  contracts  with  the  U.S.
government), and to assume certain liabilities of XOMA. As part of the transaction, the parties entered into an intellectual property license
agreement (the “Ology Bioservices License Agreement”), under which XOMA agreed to license to Ology Bioservices certain intellectual
property rights related to the purchased assets. In addition, the Company is eligible to receive 15% royalties on net sales of any future Ology
Bioservices products covered by or involving the related patents or know-how.

In  February  2017,  the  Company  executed  an  Amendment  and  Restatement  to  both  the  asset  purchase  agreement  and  Ology
Bioservices License Agreement Based on the payment terms pursuant to the amended Ology Bioservices License Agreement, the Company
was  entitled  to  receive  cash  consideration  in  aggregate  of  $4.6  million,  all  of  which  was  received  as  of  December  31,  2018.  No  further
payments remain under the agreement, but the Company is still eligible to receive royalties in the future.

The  Company  received  $2.5  million  during  the  year  ended  December  31,  2018,  which  was  recognized  as  other  income,  net  in  the

consolidated statements of operations and comprehensive loss.

8. Lease Agreements

The Company leases one facility in Emeryville, California under an operating lease that expires in February 2023. The Emeryville
lease contains both an option to early terminate the lease and an option to extend the lease for an additional term, however, the Company is
not reasonably certain to exercise either option.

th

The Company also previously leased two facilities in Berkeley, California under operating leases that had a remaining lease term until
2021 and 2023. On December 18, 2019, the Company entered into a Lease Termination Agreement with each of the 7  Street Properties II
(“7   Street  LP”)  and  7   Street  Property  General  Partnership  (“7   Street  GP”)  to  early  terminate  the  Company’s  two  operating  leases  in
Berkeley, California.  As a result of the lease terminations the Company was also released from all financial obligations under its sublease
agreements.  The Company agreed to pay an early termination fee of $1.6 million in total and recognized a loss on lease termination of $0.4
million for the year ended December 31, 2019, which was included in other income (loss), net in the consolidated statements of operations
and comprehensive loss.

th

th

th

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The following table summarizes maturity of the Company’s operating lease liabilities as of December 31, 2019 (in thousands):

Undiscounted lease payments
2020
2021
2022
2023
Thereafter

Total undiscounted lease payments

Present value adjustment

Total net lease liabilities

Operating
Leases

189
196
204
35
 —
624
(51)
573

$

$

The  following  table  summarizes  the  Company’s  future  undiscounted  lease  payments  under  operating  leases  (as  defined  by  prior

guidance) as of December 31, 2018 (in thousands):

Year Ending December 31,
2019
2020
2021
2022
2023
Thereafter

Total minimum lease payments

Rent Payments

4,381
3,923
3,156
2,611
854
—
14,925

$

$

Rent expense recognized for operating leases was $2.3 million and $2.1 million for the years ended December 31, 2019 and 2018,
respectively.  Under  the  terms  of  the  lease  agreements,  the  Company  is  also  responsible  for  certain  variable  lease  payments  that  are  not
included  in  the  measurement  of  the  lease  liability.  Variable  lease  payments  for  operating  leases  were  $1.7  million  for  the  year  ended
December 31, 2019, including non-lease components such as common area maintenance fees.

The  following  information  represents  supplemental  disclosure  for  the  statement  of  cash  flows  related  to  operating  leases  (in

thousands):

Cash paid for amounts included in the measurement of lease liabilities

Operating cash flows under operating leases

Weighted-average remaining lease term
Operating leases
Weighted-average discount rate
Operating leases

 Sublease Agreements

  December 31, 

2019

  $

2,629

  December 31,   
2019

3.17 years  

5.51 %

On  December  18,  2019,  upon  termination  of  the  leases  in  Berkeley,  California,  the  Company’s  rights  and  obligations  under  its
sublease  arrangements  for  the  two  facilities  transferred  to  7th  Street  LP  and  7th  Street  GP  and  XOMA  was  released  from  all  financial
obligations under its sublease agreements. Upon termination the Company recognized a $0.4 million in Other income (expense).

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In connection with restructuring events in 2017 and 2018 the Company completely vacated its leased facilities in Berkeley, California
and subleased the space in the vacated buildings to four subtenants.  On November 21, 2017, the Company entered into a non-cancellable
sublease agreement for a portion of one of its three leased facilities. The term of the sublease agreement commenced on December 26, 2017.
The sublease provided for a tenant improvement allowance of $0.8 million to the subtenant, which was funded by the Company in January
2018.  Upon  execution  of  the  sublease  agreement,  the  Company  recognized  a  loss  on  the  sublease  equal  to  the  tenant  improvement
allowance.  Under  the  sublease  agreement,  the  sub-lessee  executed  a  standby  letter  of  credit  naming  the  Company  as  the  beneficiary
amounting to $1.0 million as security under the sublease in the event of uncured default by the sub-lessee. As of the termination date the
Company had not drawn any funds from the letter of credit as there was no default by the sub-lessee. For the years ended December 31,
2019 and 2018, the Company recognized $1.4 million and $1.5 million, respectively, of sublease income under this agreement.

On April 14, 2018, the Company entered into a non-cancellable sublease agreement for a portion of one of its three leased facilities.
The term of the sublease agreement commenced on May 1, 2018. The sublease provided for a tenant improvement allowance of $65,000 to
the subtenant, and payment of broker commissions of $89,000. Upon execution of the sublease agreement, the Company recognized a loss
on the sublease of $0.6 million, which was recorded in the restructuring charges line item of the consolidated statement of operations and
comprehensive  loss  during  the  three  months  ended  June  30,  2018.  For  the  years  ended  December  31,  2019  and  2018,  the  Company
recognized $0.4 million and $0.3 million, respectively, of sublease income under this agreement in Other income (expense).

In October 2018, the Company entered into a non-cancellable sublease agreement for a portion of one of its three leased facilities. The
term  of  the  sublease  agreement  commenced  on  October  24,  2018.  During  the  years  ended  December  31,  2019  and  2018  the  Company
recognized $0.6 million and $0.1 million, respectively, of sublease income under this agreement in Other income (expense).

In January 2019, the Company entered into a non-cancellable sublease agreement for a portion of one of its three leased facilities. The
term of the sublease agreement commenced on January 18, 2019. The sublease provided for a tenant improvement allowance of $91,000 to
the subtenant, and payment of broker commissions of $53,000. During the year ended December 31, 2019, the Company recognized $0.6
million of sublease income under this agreement in Other income (expense).

9. Restructuring Charges

In 2016 and 2017 the Board of Directors approved a series of restructurings of its business to prioritize out-licensing activities and
curtail research and development spending. The restructuring included a reduction-in-force in which the Company terminated 62 employees
in total. Charges related to both these initiatives were complete by the end of fiscal 2017.

Prior to 2017, the Company’s operations were located in two buildings in Berkeley, California. Due to the restructuring activity and
reduction in headcount, the Company determined that it did not need the building space in Berkeley, California and consolidated all of its
personnel in a new office facility in Emeryville, California. During the year ended December 31, 2018, the Company completely vacated
both  of  its  leased  facilities  in  Berkeley,  California  and  subleased  the  space  to  subtenants.  In  connection  with  vacating  this  space,  the
Company  recorded  a  discounted  lease-related  restructuring  liability,  which  was  calculated  as  the  present  value  of  the  estimated  future
facility costs for which the Company would obtain no future economic benefit over the term of the lease, net of estimated future sublease
income,  and  adjusted  for  the  remaining  balance  of  deferred  rent.  In  addition,  in  connection  with  a  sublease  agreement  executed  in April
2018, the Company recognized a loss on the sublease of $0.6 million during the second quarter of 2018 (Note 8).

As of December 31, 2018, the Company classified the current portion of the combined lease-related liabilities of $1.4 million within
accrued and other liabilities and the non-current portion of $0.3 million within long-term other liabilities in its consolidated balance sheet.
Upon adoption of ASC 842, the Company consolidated all its lease-related liabilities in the consolidated balance sheet as of January 1, 2019
and reported as operating lease liabilities (Note 2).

During the year ended December 31, 2019, no lease-related restructuring charges were recognized in the consolidated statements of
operations and comprehensive loss. During the year ended December 31, 2018, the Company recorded $1.9 million of restructuring costs in
its consolidated statements of operations and comprehensive loss.

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10. Long-Term Debt and Other Financings

Silicon Valley Bank Loan Agreement

On  May  7,  2018  (the  “Effective  Date”),  the  Company  executed  a  Loan  and  Security Agreement  (the  “Loan Agreement”)  with
SVB. Under the Loan Agreement, upon the Company’s request, SVB may make advances (each, a “Term Loan Advance”) available to the
Company up to $20.0 million (the “Term Loan”). The available fund may be increased up to $40.0 million upon the Company’s request and
approval  by  the  bank  subject  to  the  Company’s  compliance  with  certain  internal  and  credit  requirements.  The  Company  was  allowed  to
borrow  advances  under  the  Term  Loan  from  the  Effective  Date  until  the  earlier  of  March  31,  2019  or  an  event  of  default  (the  “Draw
Period”). Unless an event of default occurs, the period to draw may have been extended to March 31, 2020, if the Company received $20.0
million  in  gross  cash  proceeds  from  milestone/licensing  payments  by  March  31,  2019.  In  the  event  of  a  default  related  to  the
Note  Agreement  with  Novartis,  SVB’s  obligation  to  make  any  credit  extensions  to  the  Company  under  the  Loan  Agreement  will
immediately terminate. The interest rate will be calculated at a rate equal to the greater of (i) 4.75%, and (ii) 0.25% plus the prime rate as
reported from time to time in The Wall Street Journal.

Payments under the Loan Agreement are interest only until the first anniversary of the funding date of each Term Loan Advance.
The interest-only period will be followed by equal monthly payments of principal and interest over 24 months. Each Term Loan Advance
will  mature  at  the  earlier  of  (i)  the  23  months  following  the  applicable  term  loan  amortization  date  for  each  such  Term  Loan Advance
(ii) March 1, 2023, or (iii) 30 days prior to the earliest maturity of any portion of the Company’s loan with Novartis (the “Loan Maturity
Date”). After repayment, no Term Loan Advance (or any portion thereof) may be reborrowed.

The entire principal balance, including a final payment fee equal to 8.5% of the principal, will be due and payable on the Loan
Maturity Date. If the Company prepays the Term Loan Advance prior to the Loan Maturity Date, it will pay SVB a prepayment premium,
based on a prepayment fee equal to 3.00% of the amount prepaid, if the prepayment occurs on or before the first anniversary of the Effective
Date,  2.00%  of  the  amount  prepaid,  if  the  prepayment  occurs  after  the  first  anniversary  of  the  Effective  Date  but  prior  to  the  second
anniversary of the Effective Date, and 1.00% of the amount prepaid if the prepayment occurs after the second anniversary of the Effective
Date. In the event of a default, a default interest rate of an additional 4% may be applied to the outstanding payments due to SVB, and SVB
may declare all outstanding obligations immediately due and payable and take such other actions as set forth in the Loan Agreement.

The Company’s obligations under the Loan Agreement are secured by a security interest in substantially all of its assets, other than
its intellectual property. The Loan Agreement includes customary affirmative and restrictive covenants, but does not include any financial
maintenance covenants, and also includes standard events of default, including payment defaults.

In connection with the Loan Agreement, the Company issued a warrant to SVB which is exercisable in whole or in part for up to an
aggregate of 6,332 shares of common stock with an exercise price of $23.69 per share (the “Warrant”). The Warrant may be exercised on a
cashless  basis  and  is  exercisable  within  10  years  from  the  date  of  issuance  or  upon  the  consummation  of  certain  acquisitions  of  the
Company.  The  fair  value  of  the  Warrant  issued  to  SVB  was  determined  using  the  Black-Scholes  Model  and  was  estimated  to  be  $0.1
million. In addition, the Company incurred debt issuance costs of $0.2 million in connection with the Loan Agreement.

On  March  4,  2019,  the  Loan Agreement  was  amended  to  extend  the  Draw  Period  from  March  31,  2019  to  March  31,  2020.  In
connection  with  the  amendment,  the  Company  issued  a  second  warrant  to  SVB  which  is  exercisable  in  whole  or  in  part  for  up  to  an
aggregate of 4,845 shares of common stock with an exercise price of $14.71 per share. The fair value of the second warrant issued to SVB
was determined using the Black-Scholes Model and was estimated to be $0.1 million. 

As  of  December  31,  2019,  both  warrants  are  outstanding.  In  addition,  both  warrants  may  be  exercised  on  a  cashless  basis  and  are

exercisable within 10 years from the date of issuance or upon the consummation of certain acquisitions of the Company.

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In  September  2018,  the  Company  borrowed  advances  of  $7.5  million  under  the  Loan Agreement  in  connection  with  the Agenus
Royalty Purchase Agreement (see Note 5). The Company recorded a discount of $0.3 million against the debt, which is being amortized to
interest expense over the term of the Term Loan Advance using the effective interest method.    

During  the  year  ended  December  31,  2019,  the  Company  borrowed  advances  totaling  $9.5  million  under  the  Loan Agreement  in
connection  with  the Aronora  Royalty  Purchase Agreement,  Palo  Royalty  Purchase Agreement  and  payment  of  the Aronora  Contingent
Consideration (see Note 5). The Company recorded a discount of $45,000 against the debt, which is being amortized to interest expense
over the term of the Term Loan Advance using the effective interest method.

The Company recorded $0.5 million of non-cash interest expense resulting from the amortization of the discount and accretion of the
final  payment  for  the  year  ended  December  31,  2019,  respectively.  The  Company  recorded  $0.1  million  of  non-cash  interest  expense
resulting from the amortization of the discount and accretion of the final payment for the year ended December 31, 2018.

As of December 31, 2019, the carrying value of the debt under the Loan Agreement was $16.4 million. Of this amount, $5.2 million
is classified as current portion of long-term debt and $11.2 million is classified as long-term debt on the consolidated balance sheet. As of
December 31, 2018, the carrying value of the debt under the Loan Agreement was $7.3 million. Of this amount, $0.8 million was classified
as current portion of long-term debt and $6.5 million was classified as long-term debt on the consolidated balance sheet.

Novartis Note

In May 2005, the Company executed a secured note agreement (the “Note Agreement”) with Novartis, which was due and payable
in full in June 2015. Under the Note Agreement, the Company borrowed semi-annually to fund up to 75% of the Company’s research and
development  and  commercialization  costs  under  its  collaboration  arrangement  with  Novartis,  not  to  exceed  $50.0  million  in  aggregate
principal  amount.  Interest  on  the  principal  amount  of  the  loan  accrued  at  six-month  LIBOR  plus  2%,  which  was  equal  to  3.91%  at
December  31,  2019  is  payable  semi-annually  in  June  and  December  of  each  year.  Additionally,  the  interest  rate  resets  in  June  and
December of each year. At the Company’s election, the semi-annual interest payments could be added to the outstanding principal amount,
in lieu of a cash payment, as long as the aggregate principal amount did not exceed $50.0 million. The Company made this election for all
interest payments. Loans under the Note Agreement were secured by the Company’s interest in its collaboration with Novartis, including
any payments owed to it thereunder.

On September 30, 2015, concurrent with the execution of a license agreement with Novartis International as discussed in Note 4,
XOMA  and  NIBR,  who  assumed  the  rights  to  the  note  from  Novartis  Vaccines  Diagnostics,  Inc.  executed  an  amendment  to  the
Note Agreement (the “Secured Note Amendment”) under which the parties extended the maturity date of the note from September 30, 2015
to September 30, 2020, and eliminated the mandatory prepayment previously required to be made with certain proceeds of pre-tax profits
and royalties. In addition, upon achievement of a specified development and regulatory milestone, the then-outstanding principal amount of
the note will be reduced by $7.3 million rather than the Company receiving such amount as a cash payment.

On September 22, 2017, in connection with the XOMA‑052 License Agreement with Novartis, the Company and NIBR executed
an amendment to the Secured Note Amendment under which the parties further extended the maturity date of the Secured Note Amendment
from September 30, 2020 to September 30, 2022.

As  of  December  31,  2019  and  December  31,  2018,  the  outstanding  principal  balance  under  the  Secured  Note Amendment  was

$15.9 million and $15.2 million, respectively, and was included in long-term debt in the accompanying consolidated balance sheets.

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Payments of Long-Term Debt

Aggregate  future  principal,  final  payment  fees  and  discounts  of  the  Company’s  long-term  debt  as  of  December  31,  2019,  are  as

follows (in thousands):

Year ending December 31, 2020
Year ending December 31, 2021
Year ending December 31, 2022
Thereafter
Total payments
Less: interest, final payment fees, discount and issuance costs
Total payments, net of interest, final payment fees, discount and issuance costs
Less: current portion of long-term debt
Long-term debt

  $

  $

6,030
8,551
21,801
 —
36,382
(4,105)
32,277
(5,184)
27,093

Interest Expense

Amortization of debt issuance costs and discounts are included in interest expense. Interest expense in the consolidated statements
of  operations  and  comprehensive  loss  for  the  years  ended  December  31,  2019  and  2018,  relates  to  the  following  debt  instruments  (in
thousands):

SVB loan
Novartis note
Other
Total interest expense

11. Income Taxes

Year Ended December 31, 

2019

2018

  $

  $

1,207   $
706  
 6  
1,919   $

258
627
37
922

The  Company  has  no  income  tax  provision  for  the  year  ended  December  31,  2019  and  $0.1  million  of  income  tax  benefit  for

the year ended December 31, 2018.

The provision (benefit) for income taxes (all current) consists of the following (in thousands):

Federal
State

Total

Year Ended December 31, 

2019

2018

  $

  $

 —   $
 —  
 —   $

(97)
(1)
(98)

Reconciliation  between  the  tax  provision  computed  at  the  federal  statutory  income  tax  rate  and  the  Company’s  actual  effective

income tax rate is as follows:

Federal tax at statutory rate
Stock compensation and other permanent differences
Tax credits
Valuation allowance

Total

F-30

Year Ended December 31, 

2019

2018

21 %  
(31) %  
 — %  
10 %  
 — %  

21 %
 2 %
 1 %
(23) %
 1 %

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
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The significant components of net deferred tax assets at December 31, 2019 and 2018 were as follows (in thousands):

Capitalized research and development expenses
Net operating loss carryforwards
Research and development and other tax credit carryforwards
Stock compensation
Deferred revenue
Other

Total deferred tax assets

Valuation allowance

Net deferred tax assets

December 31, 

  $

2019
15,735   $
18,181  
12,343  
4,737  
3,635  
930  
55,561  
(55,561) 

  $

 —   $

2018
21,979
12,901
12,343
4,732
4,100
1,483
57,538
(57,538)
 —

The net (decrease) increase in the valuation allowance was $(2.0) million and $5.8 million, for the years ended December 31, 2019

and 2018, respectively.

Accounting standards provide for the recognition of deferred tax assets if realization of such assets is more likely than not. Based
upon  the  weight  of  available  evidence,  which  includes  the  Company’s  four  sources  of  taxable  income  including  historical  operating
performance and the repeal of net operating loss carryback, the Company has determined that total deferred tax assets should be fully offset
by a valuation allowance.

Based on an analysis under Section 382 of the Internal Revenue Code (which subjects the amount of pre-change Net Operating
Losses  ("NOLs")  and  certain  other  pre-change  tax  attributes  that  can  be  utilized  to  annual  limitations),  the  Company  experienced  an
ownership  change  in  February  2017  which  substantially  limits  the  future  use  of  its  pre-change  NOLs  and  certain  other  pre-change  tax
attributes per year. The Company has excluded the related tax attributes that will expire as a result of the annual limitations in the deferred
tax assets as of December 31, 2019 and December 31, 2018. To the extent that the Company does not utilize its carry-forwards within the
applicable  statutory  carryforward  periods,  either  because  of  Section  382  limitations  or  the  lack  of  sufficient  taxable  income,  the
carryforwards will expire unused.

As of December 31, 2019, the Company had federal net operating loss carry-forwards of approximately $73.4 million and state net
operating loss carry-forwards of approximately $41.0 million to offset future taxable income. The net operating loss carryforwards begin to
expire in 2036 for federal and 2033 for state purposes. The Company had federal orphan credit of $1.2 million which if not utilized will
expire in 2037. The Company also had $19.8 million of California research and development tax credits which have no expiration date.

Under  the  US  tax  legislation  enacted  in  December  2017,  although  the  treatment  of  tax  losses  generated  in  taxable  years  ending
before  December  31,  2017  has  generally  not  changed,  tax  losses  generated  in  taxable  years  beginning  after  December  31,  2017  can  be
carried forward indefinitely but may only be utilized to offset 80% of taxable income annually.

The Company files income tax returns in the U.S. federal jurisdiction and various states. The Company’s federal income tax returns
for tax years 2016 and beyond remain subject to examination by the Internal Revenue Service. The Company’s state income tax returns for
tax years 2015 and beyond remain subject to examination by state tax authorities. In addition, all of the net operating losses and research and
development credit carry-forwards that may be used in future years are still subject to adjustment.

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The following table summarizes the Company’s activity related to its unrecognized tax benefits (in thousands):

Balance at January 1
Increase related to current year tax position
Increase (decrease) related to prior year tax position
Balance at December 31

Year Ended December 31, 

2019

2018

  $

  $

5,517   $
 —  
 —  
5,517   $

5,501
 —
16
5,517

As of December 31, 2019, the Company had a total of $5.5 million of gross unrecognized tax benefits, none of which would affect
the effective tax rate upon realization. The Company currently has a full valuation allowance against its U.S. net deferred tax assets which
would impact the timing of the effective tax rate benefit should any of these uncertain tax positions be favorably settled in the future.

The Company does not expect its unrecognized tax benefits to change significantly over the next twelve months. The Company
will  recognize  interest  and  penalties  accrued  on  any  unrecognized  tax  benefits  as  a  component  of  income  tax  expense.  Through
December 31, 2019, the Company has not accrued interest or penalties related to uncertain tax positions.

12. Compensation and Other Benefit Plans

The Company grants qualified and non-qualified stock options, RSUs, common stock and other stock-based awards under various
plans  to  directors,  officers,  employees  and  other  individuals.  Stock  options  are  granted  at  exercise  prices  of  not  less  than  the  fair  market
value of the Company’s common stock on the date of grant. Additionally, the Company has an Employee Stock Purchase Plan (“ESPP”)
that allows employees to purchase Company shares at a purchase price equal to 85% of the lower of the fair market value of the Company’s
common stock on the first trading day of the offering period or on the last day of the offering period.

Employee Stock Purchase Plan

In May 2015, the Company’s stockholders approved the 2015 Employee Stock Purchase Plan (the “2015 ESPP”), which replaced
the  Company’s  legacy  1998  ESPP.  Under  the  2015  ESPP,  the  Company  reserved  15,000  shares  of  common  stock  for  issuance  as  of  its
effective date of July 1, 2015, subject to adjustment in the event of a stock split, stock dividend, combination or reclassification or similar
event.  The  2015  ESPP  allows  eligible  employees  to  purchase  shares  of  the  Company’s  common  stock  at  a  discount  through  payroll
deductions  of  up  to  10%  of  their  eligible  compensation,  subject  to  any  plan  limitations.  The  2015  ESPP  provides  for  six-month  offering
periods ending on May 31 and November 30 of each year. At the end of each offering period, employees are able to purchase shares at 85%
of the lower of the fair market value of the Company’s common stock on the first trading day of the offering period or on the last day of the
offering period.

In  February  2017,  the  Compensation  Committee  and  the  Board  of  Directors  adopted,  and  in  May  2017,  the  Company’s
stockholders approved, an amendment to the Company’s 2015 ESPP. The amendment (a) increased by 250,000 the shares of common stock
(from 15,000 shares to a total of 265,000 shares) available for issuance under the 2015 ESPP; and (b) increased the maximum number of
shares of common stock an employee may purchase in any offering period to 2,500.

During  the  years  ended  December  31,  2019  and  2018,  employees  purchased  2,365  and  2,948  shares  of  common  stock,

respectively, under the 2015 ESPP.

Deferred Savings Plan

Under section 401(k) of the Internal Revenue Code of 1986, the Board of Directors adopted, effective June 1, 1987, a tax-qualified
deferred compensation plan for employees of the Company. Participants may make contributions which defer up to 50% of their eligible
compensation per payroll period, up to a maximum for 2019 of $19,000 (or $25,000

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for employees over 50 years of age) and for 2018 of $18,500 (or $24,500 for employees over 50 years of age). The Company may, at its
sole discretion, make contributions each plan year, in cash or in shares of the Company’s common stock, in amounts which match up to 50%
of the salary deferred by the participants. The expense related to these contributions was $0.1 million each for the years ended December 31,
2019 and December 31, 2018, and 100% was paid in common stock for each year. The Company applies shares from plan forfeitures of
terminated employees toward the Company’s matching contribution. 

Stock Option Plans

In May 2010, the Compensation Committee and the full Board adopted, and in July 2010 the Company’s stockholders approved, a
new equity-based compensation plan, the 2010 Long Term Incentive and Share Award Plan, which has since been amended and restated as
the Amended and Restated 2010 Long Term Incentive and Stock Award Plan (the “2010 Plan”). The 2010 Plan replaced the Company’s
legacy Option Plan, Restricted Plan and 1992 Directors Share Option Plan (the “Directors Plan”) and provided a more current set of terms
under which to provide this type of compensation.

In  February  2016,  the  Compensation  Committee  and  the  Board  of  Directors  adopted,  and  in  May  2016,  the  Company’s
stockholders approved an amendment to the 2010 Plan to, among other things, allow for an increase in the number of shares of common
stock reserved for issuance by 170,000 shares to an aggregate of 1,108,560 shares.

In  February  2017,  the  Compensation  Committee  and  the  Board  of  Directors  adopted,  and  in  May  2017,  the  Company’s
stockholders approved, an amendment to the 2010 Plan. The amendment (a) increases the number of shares of common stock issuable over
the term of the plan by an additional 1,470,502 to 2,579,062 shares in the aggregate; (b) increases the number of shares of common stock
issuable under the plan as incentive stock options by an additional 2,004,087 to 2,579,062 shares; (c) increases the per person award limits
for purposes of compliance with Section 162(m) of the Internal Revenue Code to 2,000,000 shares for options and stock appreciation rights
and to 2,000,000 shares for other types of stock awards; and (d) for purposes of Section 162(m) (i) confirms existing performance criteria
upon which performance goals may be based with respect to performance awards under the 2010 Plan, and (ii) confirms existing means of
adjustment when calculating the attainment of performance goals for performance awards granted under the 2010 Plan.

In May 2019, the Compensation Committee and the Board of Directors adopted, and in May 2019, the Company’s stockholders
approved, an amendment to the 2010 Plan. The amendment (a) increases the number of shares of common stock issuable over the term of
the plan by an additional 450,000 to 3,029,062 shares in the aggregate; (b) increases the number of shares of common stock issuable under
the plan as incentive stock options by an additional 450,000 to 3,029,062 shares; (c) extended the term of the Plan until April 1, 2029; (d)
for  purposes  of  Section  162(m)  (i)  eliminates  performance  cash  awards,  and  (ii)  eliminates  individual  grant  limits  that  applied  under  the
2010 Long Term Incentive Plan to awards that were intended to comply with the exemption for “performance-based compensation” under
Code Section 162(m).

From the 2010 Plan, the Company grants stock options, RSUs, and other stock-based awards to eligible employees, consultants
and  directors.  No  further  grants  or  awards  will  be  made  under  the  Option  Plan,  the  Restricted  Share  Plan  or  the  Directors  Plan.  Shares
underlying options previously issued under the Option Plan, the Restricted Share Plan or the Directors Plan that are currently outstanding
will, upon forfeiture, cancellation, surrender or other termination, become available under the 2010 Plan. Stock-based awards granted under
the 2010 Plan may be exercised when vested and generally expire ten years from the date of the grant or three to six months from the date of
termination of employment (longer in case of death or certain retirements).

As of December 31, 2019, the Company had 525,020 shares available for grant under the stock option plan. As of December 31,

2019, options covering 1,839,623 shares of common stock were outstanding under the stock option plan.

Stock Options

Stock options generally vest monthly over three years for employees and one year for directors. Stock options held by employees

who qualify for retirement age (defined as employees that are a minimum of 55 years of age and the

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sum of their age plus years of full-time employment with the Company exceeds 70 years) vest on the earlier of scheduled vest date or the
date of retirement.

Stock Option Plans Summary

The following table summarizes the Company’s stock option activity for the year ended December 31, 2019:

Outstanding at beginning of year
Granted
Exercised
Forfeited, expired or cancelled
Outstanding at end of period
Exercisable at end of period

Average

Exercise   Contractual   

     Weighted      Weighted      Aggregate
Intrinsic
  Average  
Value
(in
thousands)
8,104

Term
(in years)

7.5   $

Number of
Price
shares
  Per Share  
1,624,746   $ 23.09  
14.84  
438,814  
4.90  
(55,759) 
(168,178) 
36.78  
1,839,623   $ 20.42  
1,471,669   $ 21.60  

6.88   $ 26,829
6.37   $ 22,569

The aggregate intrinsic value of stock options exercised in 2019 and 2018 was $0.7 million and $1.1 million, respectively. The

weighted-average grant-date fair value per share of the options granted in 2019 and 2018 was $11.72 and $18.25, respectively.

As  of  December  31,  2019,  $3.5  million  of  total  unrecognized  compensation  expense  related  to  stock  options  is  expected  to  be

recognized over a weighted average period of 1.87 years.

Performance-Based Stock Options

Stock-based compensation expense associated with the corporate performance-based stock options is recognized if the performance
condition is considered probable of achievement using management’s best estimates. In 2019, the Company had 41,250 shares remaining
related to outstanding performance-based stock options with a grant date fair value of $0.2 million that had vesting criteria based solely on
the achievement of fiscal year 2019 corporate goals as set by the Compensation Committee of the Company’s Board of Directors. For the
year ended December 31, 2019, the Company determined that all remaining options were probable of achievement in fiscal year 2019 and
therefore the related expense of $0.2 million was recognized for the year ended December 31, 2019. As of December 31, 2019, there was no
unrecognized compensation costs related to these outstanding performance-based stock options. 

Modification of Stock Options

In  September  2019,  the  Company  entered  into  a  separation  agreement  with  its  former  Chief  Business  Officer  which  resulted  in  the
extension  of  the  exercise  period  for  all  of  her  vested  options.  As  a  result  of  the  modification,  the  Company  recorded  stock-based
compensation expense of $0.5 million during the three months ended September 30, 2019 to reflect the revised expected term based on the
modified exercise period for these stock options in 2019.

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Stock-based Compensation Expense

The fair value of stock options granted during the years ended December 31, 2019 and 2018, was estimated based on the following

weighted average assumptions for:

Dividend yield
Expected volatility
Risk-free interest rate
Expected term

Year Ended December 31, 

2019

2018

 0 %  
102 %  
2.42 %  

 0 %
101 %
2.72 %

5.62 years  

5.60 years  

The  following  table  shows  total  stock-based  compensation  expense  for  stock  options,  RSUs  and  ESPP  in  the  consolidated

statements of operations and comprehensive loss (in thousands):

Research and development
General and administrative
Total stock-based compensation expense

13. Net Loss Per Share Attributable to Common Stockholders

Year Ended December 31, 

2019

2018

  $

  $

204   $

4,744  
4,948   $

369
3,533
3,902

Potentially dilutive securities are excluded from the calculation of diluted net loss per share attributable to common stockholders if

their inclusion is anti-dilutive.

The  following  table  shows  the  weighted-average  outstanding  securities  considered  anti-dilutive  and  therefore  excluded  from  the

computation of diluted net loss per share attributable to common stockholders (in thousands):

Convertible preferred stock
Common stock options and RSUs
Warrants for common stock
Total

  Year Ended December 31, 

2019

2018

6,256  
924  
 9  
7,189  

5,048
1,639
21
6,708

The following is a reconciliation of the numerator (net income or loss) and denominator (number of shares) used in the calculation

of basic and diluted net loss per share attributable to common stockholders (in thousands):

Numerator
Net loss available to common stockholders

Year Ended December 31, 

2019

2018

  $

(1,982)  $ (13,343)

Denominator
Weighted average shares used in computing basic and diluted net loss per share
available to common stockholders
Basic and diluted net loss per share of common stock

8,763  
(0.23)  $

8,373
(1.59)

  $

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Table of Contents

14. Capital Stock

Convertible Preferred Stock

Rights Offering 2019

On December 2, 2019, the Company commenced a rights offering to raise up to $22.0 million through the distribution of subscription
rights to holders of its common stock, Series X preferred stock and Series Y preferred stock (the “2019 Rights Offering”). In  December
2019, the Company sold a total of 1,000,000 shares of common stock under the 2019 Rights Offering for aggregate gross proceeds of $22.0
million. Total offering costs of $0.2 million were offset against the proceeds from the sale of common stock, for total net proceeds of $21.8
million.

The  2019  Rights  Offering  was  fully  backstopped  by  Biotechnology  Value  Fund,  L.P.  (“BVF”).  In  total,  BVF  purchased  845,463
shares of common stock and the Company will pay approximately $18,000 for BVF’s reasonable legal fees and expenses in connection with
the 2019 Rights Offering. One of the Company’s Directors, Matthew Perry, is the President of BVF. Each share of common stock has a
stated value of $22.00 per share. As of December 31, 2019, BVF owned approximately 27.1% of the Company’s total outstanding shares of
common  stock,  and  if  all  of  the  Series  X  and  Series  Y  convertible  preferred  shares  were  converted,  BVF  would  own  55.6%  of  the
Company’s  total  outstanding  shares  of  common  stock.  Due  to  its  significant  equity  ownership,  BVF  is  considered  a  related  party  of  the
Company.

Rights Offering 2018

On  November  19,  2018,  the  Company  initiated  a  rights  offering  to  raise  $20.0  million  through  the  distribution  of  subscription
rights to holders of its common stock and Series X preferred stock (the “2018 Rights Offering”). In December 2018, the Company sold a
total of 285,689 shares of common stock and 1,252.772 shares of Series Y preferred stock under the 2018 Rights Offering for aggregate
gross proceeds of $20.0 million. Total offering costs of $0.3 million were offset against the proceeds from the sale of common stock and
preferred stock, for total net proceeds of $19.7 million.

All  Series  Y  convertible  preferred  shares  were  issued  to BVF.  Each  share  of  Series  Y  convertible  preferred  stock  has  a  stated
value of $13,000 per share and is convertible into 1,000 shares of registered common stock based on a conversion price of $13.00 per share
of common stock. The total number of shares of common stock issued upon conversion of all issued Series Y convertible preferred stock
will be 1,252,772 shares. Each share is convertible at the option of the holder at any time, provided that the holder will be prohibited from
converting into common stock if, as a result of such conversion, the holder, together with its affiliates, would beneficially own a number of
shares  above  a  conversion  blocker,  which  is  initially  set  at  19.99%  of  the  total  common  stock  then  issued  and  outstanding  immediately
following the conversion of such shares. A holder of Series X or Y preferred shares may elect to increase or decrease the conversion blocker
above or below 19.99% on 61 days’ notice, provided the conversion blocker does not exceed the limits under Nasdaq Marketplace Rule
5635(b), to the extent then applicable.

Preferred Stock

The  Series  X  and  Series  Y  convertible  preferred  stock  have  the  following  characteristics,  which  are  set  forth  in  Certificates  of

Designation of Preferences, Rights and Limitations filed with the Delaware Secretary of State.

Dividends— Holders of convertible preferred stock are entitled to receive dividends on shares of convertible preferred stock equal

(on an as if converted to common stock basis) to and in the same form as dividends actually paid on the Company’s common stock.

Liquidation Rights— In the event of the Company’s liquidation, dissolution or winding up, holders of convertible preferred stock

will participate, on a pro-rata basis, with any distribution of proceeds to holders of common stock.

Conversion— Each  share  of  Series  X  and  Series  Y  is  convertible  into  1,000  shares  of  registered  common  stock  based  on  a

conversion price of $4.03 per share and $13.00 per share of common stock, respectively. 

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Table of Contents

Voting  Rights— Convertible  preferred  stock  will  generally  have  no  voting  rights,  except  as  required  by  law  and  except  that  the
consent of the holders of the outstanding convertible preferred stock will be required to amend the terms and to issue additional shares of
the preferred stock.

Classification— The Company evaluated the convertible preferred stock for liability or equity classification under the applicable
accounting  guidance  and  determined  that  equity  treatment  was  appropriate  because  the  convertible  preferred  stock  did  not  meet  the
definition of the liability instruments defined thereunder for convertible instruments. Specifically, the convertible preferred shares are not
mandatorily redeemable and do not embody an obligation to buy back the shares outside of the Company’s control in a manner that could
require the transfer of assets. Additionally, the Company determined that the convertible preferred stock would be recorded as permanent
equity, not temporary equity, given that they are not redeemable for cash or other assets (i) on a fixed or determinable date, (ii) at the option
of the holder, and (iii) upon the occurrence of an event that is not solely within control of the Company. The Company has also evaluated
the  embedded  conversion  and  contingent  redemption  features  within  the  convertible  preferred  stock  in  accordance  with  the  accounting
guidance for derivatives and determined that bifurcation is not required for any embedded feature.

Beneficial  Conversion  Feature— The  fair  value  of  the  common  stock  into  which  the  Series  X  convertible  preferred  stock  is
convertible exceeded the allocated purchase price of the Series X convertible preferred stock by $5.6 million on the date of issuance, as such
the Company recorded a deemed dividend. The Company recognized the resulting beneficial conversion feature as a deemed dividend equal
to  the  number  of  shares  of  Series  X  convertible  preferred  stock  sold  on  February  16,  2017  multiplied  by  the  difference  between  the  fair
value of the common stock and the Series X convertible preferred stock effective conversion price per share on that date. The dividend was
reflected as a one-time, non-cash, deemed dividend to the holders of Series X convertible preferred stock on the date of issuance, which is
the date the stock first became convertible. There was no beneficial conversion feature associated with the issuance of Series Y convertible
preferred stock.

2018 ATM Agreement

On December 18, 2018, the  Company  entered  into  an At  The  Market  Issuance  Sales Agreement  (the  “2018 ATM Agreement”)
with H.C. Wainwright & Co., LLC (“HCW”), under which the Company may offer and sell from time to time at its sole discretion shares of
its common stock through HCW as its sales agent, in an aggregate amount not to exceed $30.0 million. HCW may sell the shares by any
method  permitted  by  law  deemed  to  be  an  “at  the  market”  offering  as  defined  in  Rule  415  of  the  Securities  Act,  and  will  use  its
commercially  reasonable  efforts  consistent  with  its  normal  trading  and  sales  practices  to  sell  the  shares  up  to  the  amount  specified.  The
Company will pay HCW a commission of 3% of the gross proceeds of any shares of common stock sold under the 2018 ATM Agreement.
The Company has not sold any shares of common stock under the 2018 ATM Agreement.

Common Stock Warrants

As of December 31, 2019 and 2018, the following common stock warrants were outstanding:

Issuance Date
February 2015  
February 2016  
May 2018
March 2019

Expiration Date   Balance Sheet Classification  
February 2020   Stockholders’ equity
February 2021   Stockholders’ equity
May 2028   Stockholders’ equity
March 2029   Stockholders’ equity

  $
  $
  $
  $

per Share

2019

2018

66.20  
15.40  
23.69  
14.71  

9,063  
8,249  
6,332  
4,845  
28,489  

9,063
8,249
6,332
 —
23,644

     Exercise Price      December 31,       December 31,

In  February  2015,  the  Company  issued  Hercules  Technology  Growth  Capital,  Inc.  (“Hercules”)  a  five-year  warrant  that  entitles
Hercules to purchase up to an aggregate of 9,063 unregistered shares of the Company’s common stock at an exercise price equal to $66.20
per share. The warrant was issued in connection with a term loan that was repaid in full in 2017.  The warrant is classified in stockholders’
equity on the consolidated balance sheets. As of December 31, 2019, no shares have been issued upon exercise of the warrant.

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In February 2016, in conjunction with services provided by a third-party consultant, the Company issued a warrant to purchase up
to an aggregate of 8,249 unregistered shares of the Company’s common stock at an exercise price equal to $15.40 per share. The warrant is
exercisable immediately and has a five-year term expiring in February 2021. The estimated fair value of the warrant of $0.1 million was
calculated using the Black-Scholes Model and was classified in stockholders’ equity on the consolidated balance sheet. As of December 31,
2018, no shares have been issued upon exercise of the warrant.

In May 2018, the Company issued SVB a warrant in connection with the SVB Loan Agreement (see Note 9) which is exercisable
in whole or in part for up to an aggregate of 6,332 shares of common stock with an exercise price of $23.69 per share. The warrant may be
exercised on a cashless basis and is exercisable within 10 years from the date of issuance or upon the consummation of certain acquisitions
of the Company. The fair value of the warrant issued to SVB was determined using the Black-Scholes Model and was estimated to be $0.1
million. The warrant is classified in stockholders’ equity on the consolidated balance sheets.

In  March  2019,  the  Loan  Agreement  was  amended  to  extend  the  Draw  Period  from  March  31,  2019  to  March  31,  2020.  In
connection  with  the  amendment,  the  Company  issued  a  second  warrant  to  SVB  which  is  exercisable  in  whole  or  in  part  for  up  to  an
aggregate of 4,845 shares of common stock with an exercise price of $14.71 per share. The second warrant may be exercised on a cashless
basis and is exercisable within 10 years from the date of issuance or upon the consummation of certain acquisitions of the Company. The
fair value of the second warrant issued to SVB was determined using the Black-Scholes Model and was estimated to be $0.1 million. As of
December 31, 2019, both warrants are outstanding and no shares have been issued upon exercise of the warrants.

15. Commitments and Contingencies

Collaborative Agreements, Royalties and Milestone Payments

The Company has committed to make potential future milestone payments and legal fees to third parties as part of licensing and
development programs. Payments under these agreements become due and payable only upon the achievement of certain developmental,
regulatory and commercial milestones by the Company’s licensees. Because it is uncertain if and when these milestones will be achieved,
such contingencies, aggregating up to $7.6 million (assuming one product per contract meets all milestones events) have not been recorded
on the accompanying consolidated balance sheets. The Company is unable to determine precisely when and if payment obligations under the
agreements will become due as these obligations are based on milestone events, the achievement of which is subject to a significant number
of risks and uncertainties.

Contingent Consideration

Pursuant to the Company’s royalty purchase agreements with Bioasis and Aronora, the Company has committed to pay the Bioasis
Contingent Consideration, the Aronora Contingent Consideration and the Aronora Royalty Milestones. The Company recorded $0.1 million
and  $3.0  million  for  the  Bioasis  Contingent  Consideration  and  the Aronora  Contingent  Consideration,  respectively,  which  represent  the
estimated  fair  value  of  these  potential  future  payments  at  the  inception  of  the  agreements.  These  contingent  consideration  payments  are
remeasured at fair value at each reporting period, with changes in fair value recorded in other income (expense), net. In September 2019, the
Company paid the Aronora Contingent Consideration of $3.0 million. The liability for future Aronora Royalty Milestones will be recorded
when  the  amounts  by  product  are  estimable  and  probable. As  of  December  31,  2019,  none  of  these Aronora  Royalty  Milestones  were
assessed to be probable and as such, none was recorded on the consolidated balance sheet.  

16. Concentration of Risk, Segment and Geographic Information

Concentration of Risk

Cash  and  receivables  are  financial  instruments  which  potentially  subject  the  Company  to  concentrations  of  credit  risk,  as  well  as

liquidity risk. 

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Table of Contents

The Company has not experienced any significant credit losses and does not generally require collateral on receivables. For the year
ended December 31, 2019, two partners represented 76% and 14% of total revenues. For the year ended December 31, 2018, three partners
represented  34%,  25%,  and  14%  of  total  revenues. As  of  December  31,  2019,  one  partner  represented  100%  of  the  trade  receivables
balance. As of December 31, 2018, two partners represented 67% and 28% of the trade receivables balance. 

Segment Information

The Company has determined that it operates in one business segment as it only reports operating results on an aggregate basis to

the chief operating decision maker of the Company.

Geographic Information

Revenue attributed to the following geographic regions was as follows (in thousands) based on the location of the licensees:

United States
Europe
Asia Pacific
Total

The Company’s property and equipment is held in the United States.

Year Ended December 31, 

2019
17,670   $
100  
600  
18,370   $

2018

3,935
1,014
350
5,299

  $

  $

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Table of Contents

17. Quarterly Financial Information (unaudited)

The following is a summary of the quarterly results of operations for the years ended December 31, 2019 and 2018:

(1)

2019
Total revenues
Operating costs and expenses
Income (loss) from operations
Other income (expense), net
Net income (loss) before income tax
Income tax (expense) benefit
Net income (loss)
Basic net income (loss) per share attributable to common stockholders
(2)
Diluted net income (loss) per share attributable to common stockholders 

(3)

2018
Total revenues
Restructuring (charge) credit
Operating costs and expenses
Loss from operations
Other income, net
Net loss before income tax
Income tax benefit
Net loss
Basic net loss per share attributable to common stockholders
Diluted net loss per share attributable to common stockholders

Consolidated Statements of Operations Data
Quarter Ended

     March 31     

June 30

     September 30      December 31

(In thousands, except per share amounts)

  $

  $
  $
  $

  $

  $
  $
  $

8,131   $
(6,195) 
1,936  
1,297  
3,233  
 —  
3,233   $
0.22   $
0.21   $

463   $
 —  
(5,600) 
(5,137) 
1,331  
(3,806) 
 —  
(3,806)  $
(0.46)  $
(0.46)  $

962   $

(5,673) 
(4,711) 
639  
(4,072) 
 —  
(4,072)  $
(0.47)  $
(0.47)  $

2,255   $
(459) 
(4,787) 
(2,991) 
1,044  
(1,947) 
 —  
(1,947)  $
(0.23)  $
(0.23)  $

8,855   $
(5,964) 
2,891  
287  
3,178  
 —  
3,178   $
0.21   $
0.20   $

896   $
(909) 
(5,294) 
(5,307) 
729  
(4,578) 
 —  
(4,578)  $
(0.55)  $
(0.55)  $

422
(4,423)
(4,001)
(320)
(4,321)
 —
(4,321)
(0.49)
(0.49)

1,685
(543)
(4,564)
(3,422)
312
(3,110)
98
(3,012)
(0.35)
(0.35)

(1) Total revenues mainly include $14.0 million of revenue recognized in the first and the third quarter in 2019 under the license

agreement and common stock purchase agreement with Rezolute, and $2.5 million in milestone revenue earned in the third quarter of
2019 under our license agreement with Janssen.

(2) For the quarters ended March 31, 2019 and September 30, 2019, the Company’s diluted net income per share of common stock was

computed by giving effect to all potentially dilutive common stock equivalents outstanding during each of these periods.

(3) Total revenues include upfront fees, milestone payments and royalties relating to various out-licensing arrangements, which includes
$1.8 million of revenue recognized in the second quarter of 2018 under the license agreement and common stock purchase agreement
with Rezolute, and $0.8 million in milestone revenue earned in the fourth quarter of 2018 under our license agreement with Janssen. 

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Exhibit 4.6

 DESCRIPTION OF XOMA CORPORATION CAPITAL STOCK

The following is a description of the Common Stock,  $0.0075 par value (the “Common Stock”), which is the only security of the
Company registered pursuant to Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and Preferred
Stock, $0.05 par value (the “Preferred Stock”) of XOMA Corporation (the “Company”).

Common Stock

General. The Company is authorized to issue up to 277,333,332 shares of Common Stock. The following description is based on
(i) the Company’s Certificate of Incorporation, as currently in effect (the “Certificate of Incorporation”), (ii) the Company’s By-laws,
as  currently  in  effect  (the  “By-laws”),  and  (iii)  the  Delaware  General  Corporation  Law  (the  “DGCL”).  The  following  summary
description  of  the  Common  Stock  of  the  Company  is  qualified  in  its  entirety  by  reference  to  the  provisions  of  the  Certificate  of
Incorporation  and  By-laws,  copies  of  which  have  been  filed  as  exhibits  to  the  Company’s Annual  Report  filed  herewith,  and  the
applicable provisions of the DGCL.

Dividend  Rights.  The  holders  of  our  Common  Stock  have  the  right  to  receive  dividends  and  distributions,  whether  payable  in

cash or otherwise, as may be declared from time to time by our board of directors, from legally available funds.

Voting  Rights.  Each holder of our Common Stock is generally entitled to one vote for each share of Common Stock owned of
record on all matters submitted to a vote of our stockholders. Except as otherwise required by law, holders of Common Stock (as well
as holders of any Preferred Stock entitled to vote with the common stockholders) will generally vote together as a single class on all
matters  presented  to  the  stockholders  for  their  vote  or  approval,  including  the  election  of  directors. Any  matter  brought  before  the
stockholders for a vote, other than the election of directors, will generally be decided by a majority of the votes cast on the matter,
unless  the  matter  is  one  in  which  an  express  provision  of  the  DGCL,  the  Certificate  of  Incorporation,  the  By-laws,  the  rules  or
regulations  of  any  stock  exchange  applicable  to  us,  applicable  law  or  pursuant  to  any  regulation  applicable  to  us  or  our  securities
requires  a  different  vote,  in  which  case  the  express  provision  will  govern  and  control  the  decision  of  the  matter.  Directors  will  be
elected by a plurality of the votes cast and entitled to vote generally on the election of directors. There are no cumulative voting rights
with respect to the election of directors or any other matters.

No  Preemptive  or  Similar  Rights.  Holders  of  our  Common  Stock  have  no  redemption  rights,  conversion  rights  or  preemptive

rights to purchase or subscribe for our securities.

Right to Receive Liquidation Distributions.  In the event of our liquidation, dissolution or winding-up, holders of our Common
Stock  will  be  entitled  to  share  equally  in  the  assets  available  for  distribution  after  payment  of  all  creditors  and  the  liquidation
preferences of our Preferred Stock (if any).

The rights of the holders of our Common Stock are subject o, and may be adversely affected by, the rights of holders of shares of any
Preferred Stock that we may designate and issue in the future.

Preferred Stock 

General. Under our Certificate of Incorporation, our board of directors is authorized to issue up to 1,000,000 shares of Preferred
Stock, and, by resolution, to divide the Preferred Stock into series and, with respect to each series, to determine the designations and
the powers, preferences and rights, and the qualifications, limitations and restrictions thereof, including the dividend rights, conversion
or  exchange  rights,  voting  rights,  redemption  rights  and  terms,  liquidation  preferences,  sinking  fund  provisions  and  the  number  of
shares constituting the series. Our board of directors can, without stockholder approval but subject to the terms of the Certificate of
Incorporation and to any resolution of the stockholders approved by at least 75% of all issued shares entitled to vote in respect thereof,
issue Preferred Stock with voting and other rights that could adversely affect the voting power of the holders of our Common

 
Stock and which could have certain anti-takeover effects. Before we may issue any series of Preferred Stock, our board of directors
will be required to adopt resolutions creating and designating such series of Preferred Stock.  

The  following  summary  description  of  the  Preferred  Stock  of  the  Company  is  qualified  in  its  entirety  by  reference  to  the
provisions of the Certificate of Incorporation, By-laws and the certificates of designation of preferences, rights and limitations of each
series of the Preferred Stock, copies of which have been filed as exhibits  to  the  Company’s Annual  Report  on  Form  10-K,  and  the
applicable  provisions  of  the  DGCL. As  of  December  31,  2019,  5,003  shares  of  Series  X  Preferred  Stock  and  1,252.772  shares  of
Series Y Preferred Stock were issued and outstanding.

The Series X Preferred Stock. We have designated 5,003 shares of our Preferred Stock as Series X Preferred Stock. The Series X

Preferred Stock ranks:

·       senior  to  any  class  or  series  of  our  capital  stock  created  specifically  ranking  by  its  terms  junior  to  the  Series  X  Preferred

Stock;

·      on parity to our Common Stock;

·       on  parity  to  any  class  or  series  of  our  capital  stock  created  specifically  ranking  by  its  terms  on  parity  with  the  Series  X

Preferred Stock; and

·      

junior  to  any  class  or  series  of  our  capital  stock  created  specifically  ranking  by  its  terms  senior  to  the  Series  X  Preferred

Stock;

in each case, as to distributions of assets upon our liquidation, dissolution or winding up whether voluntarily or involuntarily.

Dividends. Holders of Series X Preferred Stock are entitled to receive dividends on shares of Series X Preferred Stock equal (on

an as-converted basis) to and in the same form as dividends actually paid on our Common Stock or other junior securities.

Liquidation Preference. In the event of our liquidation, dissolution, or winding up, holders of our Series X Preferred Stock will
participate pari passu (on an as-converted basis, without regard to any blocker provisions) with any distribution of proceeds to holders
of our Common Stock.  

Redemption. We are not obligated to redeem or repurchase any shares of Series X Preferred Stock. Shares of Series X Preferred

Stock are not otherwise entitled to any redemption rights or mandatory sinking fund or analogous fund provisions.

Conversion. The Series X Preferred Stock is convertible at the option of the holders thereof at any time after issuance into the
number  of  registered  shares  of  Common  Stock  determined  by  dividing  the  aggregate  stated  value  of  the  Series  X  Preferred  Stock
being converted by the conversion price then in effect. The initial conversion price is $4.03 and is subject to adjustment as described
below. No holder may request a conversion of its Series X Preferred Stock to the extent such conversion would result in the holder and
its  affiliates  beneficially  owning  more  than  a  pre-set  conversion  blocker  threshold,  which  will  initially  be  set  at  19.99%  of  our
Common  Stock  then  outstanding  (the “Beneficial  Ownership  Limitation”).  The  amount  of  beneficial  ownership  of  a  holder  and  its
affiliates will be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations of that section.

Conversion Price Adjustment—Stock Dividends and Stock Splits. If we pay a stock dividend or otherwise make a distribution
payable in Common Stock on our Common Stock or any Common Stock equivalents, subdivide or combine our outstanding Common
Stock, or reclassify our Common Stock in such a way that we issue additional shares of our capital stock, the conversion price will be
adjusted by multiplying the then-existing conversion price by a fraction, the numerator of which is the number of shares of Common
Stock outstanding immediately before the distribution, dividend, adjustment or recapitalization and the denominator of which is the
number of shares of Common Stock outstanding immediately after such action.

Fundamental Transaction. If we effect a “fundamental transaction” (as defined below), then upon any future conversion of the

Series X Preferred Stock, the holders will have the right to receive, for each share of Common Stock 

they would have received upon such conversion, the same kind and amount of securities, cash or property as such holder would have
been entitled to receive in the fundamental transaction had it been the holder of Common Stock immediately prior to the fundamental
transaction. The term “fundamental transaction” means any of the following:

·       a merger or consolidation of the Company with or into another entity or any stock sale to, or other business combination in

which the Company is not the surviving entity;

·      the sale of all or substantially all of our assets in one transaction or a series of related transactions;

·       any completed tender offer or exchange offer involving holders of Common Stock in which more than 50% of the Common

Stock is converted or exchanged into other securities, cash or property, regardless of who makes such offer; or

·      

any  reclassification  of  Common  Stock  or  any  compulsory  share  exchange  by  which  our  Common  Stock  is  effectively

converted into or exchanged for other securities, cash or property (but not a reverse stock split).

If the holders of Common Stock are given a choice as to the securities, cash or property to be received in a fundamental transaction,
the holders of Series X Preferred Stock will be given the same choice on conversion of such holders’ shares.

Voting Rights. The Series X Preferred Stock has no voting rights, except to the extent expressly provided in our Certificate of
Incorporation or as otherwise required by law. However, so long as 2,502 shares of Series X Preferred Stock are outstanding, we may
not take any of the following actions without the affirmative consent of holders of a majority of the outstanding Series X Preferred
Stock:  

·       amend our Certificate of Incorporation, By-laws or other charter documents so as to materially, specifically and adversely

affect the preferences, rights, privileges of the Series X Preferred Stock;

·      

issue  additional  shares  of  Series  X  Preferred  Stock  or  increase  or  decrease  the  number  of  authorized  shares  of  Series  X

Preferred Stock;

·       sell, assign, monetize, pledge or otherwise divest or encumber our rights under any material license agreement, joint venture
or other partnership agreement to which we are a party as of the date of this offering and involving any drug or drug candidate;

·      issue or commit to issue any other equity securities, with certain exceptions;

·       issue any equity-based award or compensation to certain of our officers, unless the award has been unanimously approved by
our  compensation  committee  at  a  time  when  a  designee  appointed  by  the  Series  X  Preferred  holders  is  then  serving  on  that
committee; or

·      enter into any agreement or understanding to take any of the actions listed above.

The Series Y Preferred Stock. We have designated 1,539 shares of our Preferred Stock as Series Y Preferred Stock. The Series Y

Preferred Stock ranks:

·       senior  to  any  class  or  series  of  our  capital  stock  created  specifically  ranking  by  its  terms  junior  to  the  Series  Y  Preferred

Stock;

·      on parity to our Common Stock and Series X Preferred Stock;

·       on  parity  to  any  class  or  series  of  our  capital  stock  created  specifically  ranking  by  its  terms  on  parity  with  the  Series  Y

Preferred Stock; and

·      

junior  to  any  class  or  series  of  our  capital  stock  created  specifically  ranking  by  its  terms  senior  to  the  Series  Y  Preferred

Stock;

in each case, as to distributions of assets upon our liquidation, dissolution or winding up whether voluntarily or involuntarily.

Dividends. Holders of Series Y Preferred Stock are entitled to receive dividends on shares of Series Y Preferred Stock equal (on
an as if converted to Common Stock basis) to and in the same form as dividends actually paid on our Common Stock or other junior
securities.

Liquidation Preference. In the event of our liquidation, dissolution, or winding up, holders of our Series Y Preferred Stock will
participate pari passu (on an as-converted basis, without regard to any blocker provisions) with any distribution of proceeds to holders
of our Common Stock.

Redemption. We are not obligated to redeem or repurchase any shares of Series Y Preferred Stock. Shares of Series Y Preferred

Stock are not otherwise entitled to any redemption rights or mandatory sinking fund or analogous fund provisions.

Conversion. The Series Y Preferred Stock is convertible at the option of the holders thereof at any time after issuance into the
number  of  registered  shares  of  Common  Stock  determined  by  dividing  the  aggregate  stated  value  of  the  Series  Y  Preferred  Stock
being converted by the conversion price then in effect. The initial conversion price is $13.00 and is subject to adjustment as described
below. No holder may request a conversion of its Series Y Preferred Stock to the extent such conversion would result in the holder and
its  affiliates  beneficially  owning  more  than  a  pre-set  conversion  blocker  threshold,  which  will  initially  be  set  at  19.99%  of  our
Common  Stock  then  outstanding  (the “Beneficial  Ownership  Limitation”).  The  amount  of  beneficial  ownership  of  a  holder  and  its
affiliates will be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations of that section.

Conversion Price Adjustment—Stock Dividends and Stock Splits. If we pay a stock dividend or otherwise make a distribution
payable in Common Stock on our Common Stock or any Common Stock equivalents, subdivide or combine our outstanding Common
Stock, or reclassify our Common Stock in such a way that we issue additional shares of our capital stock, the conversion price will be
adjusted by multiplying the then-existing conversion price by a fraction, the numerator of which is the number of shares of Common
Stock outstanding immediately before the distribution, dividend, adjustment or recapitalization and the denominator of which is the
number of shares of Common Stock outstanding immediately after such action.

Fundamental Transaction. If we effect a “fundamental transaction” (as defined below), then upon any future conversion of the
Series Y Preferred Stock, the holders will have the right to receive, for each share of Common Stock they would have received upon
such conversion, the same kind and amount of securities, cash or property as such holder would have been entitled to receive in the
fundamental  transaction  had  it  been  the  holder  of  Common  Stock  immediately  prior  to  the  fundamental  transaction.  The  term
“fundamental transaction” means any of the following:

·       a merger or consolidation of the Company with or into another entity or any stock sale to, or other business combination in

which the Company is not the surviving entity;

·      the sale of all or substantially all of our assets in one transaction or a series of related transactions;

·       any completed tender offer or exchange offer involving holders of Common Stock in which more than 50% of the Common

Stock is converted or exchanged into other securities, cash or property, regardless of who makes such offer; or

·      

any  reclassification  of  Common  Stock  or  any  compulsory  share  exchange  by  which  our  Common  Stock  is  effectively

converted into or exchanged for other securities, cash or property (but not a reverse stock split).

If the holders of Common Stock are given a choice as to the securities, cash or property to be received in a fundamental transaction,
the holders of Series Y Preferred Stock will be given the same choice on conversion of such holders’ shares.

Voting Rights. The Series Y Preferred Stock has no voting rights, except to the extent expressly provided in our Certificate of

Incorporation or as otherwise required by law. However, so long as 770 shares of Series Y Preferred

Stock are outstanding, we may not take any of the following actions without the affirmative consent of holders of a majority of the
outstanding Series Y Preferred Stock:

·       amend our Certificate of Incorporation, By-laws or other charter documents so as to materially, specifically and adversely

affect the preferences, rights, privileges of the Series Y Preferred Stock;

·      

issue  additional  shares  of  Series  Y  Preferred  Stock  or  increase  or  decrease  the  number  of  authorized  shares  of  Series  Y

Preferred Stock;

Anti-takeover Effects of Provisions of our Certificate of Incorporation and By-laws and Delaware Law

Certificate of Incorporation and By-laws Provisions.   Our certificate of incorporation authorizes our board of directors to issue
up  to  1,000,000  shares  of  Preferred  Stock  without  stockholder  approval  and  to  set  the  rights,  preferences  and  other  designations,
including voting rights, of those shares as the board of directors may determine. In addition, our bylaws require certain procedures to
be followed and time periods to be met for any stockholder to propose matters to be considered at annual meetings of stockholders,
including  nominating  directors  for  election  at  those  meetings.  Our  bylaws  also  provide  that  our  board  of  directors  is  able  to  elect  a
director to fill a vacancy created by the expansion of the board of directors or due to the resignation or departure of an existing board
member.  Provisions  of  Delaware  law  and  our  certificate  of  incorporation  and  bylaws  could  make  the  acquisition  of  our  company
through a tender offer, a proxy contest or other means more difficult and could make the removal of incumbent officers and directors
more difficult.  We expect these provisions to discourage coercive takeover practices and inadequate takeover bids and to encourage
persons seeking to acquire control of our company to first negotiate with our board of directors. We believe that the benefits provided
by  our  ability  to  negotiate  with  the  proponent  of  an  unfriendly  or  unsolicited  proposal  outweigh  the  disadvantages  of  discouraging
these proposals. We believe the negotiation of an unfriendly or unsolicited proposal could result in an improvement of its terms.

Delaware  Law.  We are subject to Section 203 of the DGCL, an anti-takeover law. In general, Section 203 prohibits a publicly
held  Delaware  corporation  from  engaging  in  a  “business  combination”  with  an  “interested  stockholder”  for  a  period  of  three  years
following the date the person became an interested stockholder, unless:

·       prior to the date of the transaction, the board of directors of the corporation approved either the business combination or the

transaction which resulted in the stockholder becoming an interested stockholder;

·      

upon  completion  of  the  transaction  that  resulted  in  the  stockholder  becoming  an  interested  stockholder,  the  interested
stockholder  owned  at  least  85%  of  the  voting  stock  of  the  corporation  outstanding  at  the  time  the  transaction  commenced,
excluding for purposes of determining the number of shares outstanding (a) shares owned by persons who are directors and
also officers, and (b) shares owned by employee stock plans in which employee participants do not have the right to determine
confidentially whether shares held subject to the plan will be tendered in a tender or exchange offer; or

·      on or subsequent to the date of the transaction, the business combination is approved by the board and authorized at an annual
or special meeting of stockholders, and not by written consent, by the affirmative vote of at least 66% of the outstanding voting
stock which is not owned by the interested stockholder.

Generally, a “business combination” includes a merger, asset or stock sale, or other transaction resulting in a financial benefit to
the interested stockholder. An “interested stockholder” is a person who, together with affiliates and associates, beneficially owns, or is
an affiliate of the corporation and within three years prior to the determination of interested stockholder status did own, 15% or more
of a corporation’s outstanding voting securities. We expect the existence of this provision to have an anti-takeover effect with respect
to transactions our board of directors does not approve in advance.

 
LEASE TERMINATION AGREEMENT

Exhibit 10.60

THIS  LEASE  TERMINATION  AGREEMENT (this  “Termination Agreement”)  is  made  as  of
December  17,  2019  (the  “Effective  Date”),  by  and  between 7TH  STREET  PROPERTY  GENERAL
PARTNERSHIP,  a  California  general  partnership  (“Landlord”)  and XOMA  CORPORATION,  a
Delaware corporation (“Tenant”).

RECITALS:

A.

B.

C.

Landlord  and  Tenant  are  parties  to  that  certain  lease  dated  as  of  February  13,  2013  (the  “Original
Lease”),  which  Original  Lease  has  been  amended  by  that  certain  First  Amendment  to  Lease  dated
February  22,  2013,  and  that  certain  Second  Amendment  to  Lease  dated  November  18,  2014
(collectively,  the  “Lease”)  relating  to  approximately  43,759  rentable  square  feet  (the  “Premises”)
comprising the entire building located at 2910 Seventh Street, Berkeley, California (the “Building”),
all  as  more  particularly  described  in  the  Lease.  The  capitalized  terms  used  in  this  Termination
Agreement shall have the same definitions as set forth in the Lease to the extent that such capitalized
terms are defined therein and not redefined in this Termination Agreement.

Tenant, as sublandlord, and Pivot Bio, Inc., a Delaware corporation, as subtenant (the “Subtenant”),
are parties to that certain Sublease Agreement dated September 28, 2018 (the “Sublease”), pertaining
to  approximately  21,314  rentable  square  feet,  described  as  a  portion  of  the  ground  floor  of  the
Premises.  Landlord  consented  to  the  Sublease  by  that  certain  Consent  to  Sublease  dated  October  24,
2018 (the “Consent”). The Sublease by its terms is scheduled to expire on May 31, 2021.

The Term is scheduled to expire on May 31, 2021 (the “Stated Expiration Date”), and Tenant desires
to terminate the Lease prior to the Stated Expiration Date. Landlord has agreed to such termination on
the terms and conditions contained in this Termination Agreement.

NOW, THEREFORE, in consideration of the above recitals which by this reference are incorporated
herein,  the  mutual  covenants  and  conditions  contained  herein  and  other  valuable  consideration,  the  receipt
and sufficiency of which are hereby acknowledged, Landlord and Tenant agree as follows:

1.

Effective as of the Effective Date (the “Early Termination Date”)  and  subject  to  the  agreements,
representations,  warranties  and  indemnities  contained  in  this  Termination  Agreement,  including,
without  limitation,  payment  of  the  Termination  Fee  described  in  Section  9  below,  the  Lease  is
terminated and the Term of the Lease shall expire with the same force and effect as if the Term was,
by  the  provisions  thereof,  fixed  to  expire  on  the  Early  Termination  Date,  provided,  Tenant’s
obligation  to  pay  Monthly  Base  Rent  and  Rent Adjustments  under  the  Lease  shall  be  terminated
effective  as  of  September  15,  2019  (the  “Rent  Termination  Date”).  Subject  to  the  terms  and
conditions  of  Section  5  below,  effective  as  of  the  Early  Termination  Date,  that  certain  letter
agreement dated July 27,

077212\11436539v1 

 
 
 
 
2016, between Wareham Property Group (on behalf of Landlord) and XOMA (US) LLC (on behalf of
Tenant) regarding the performance of certain preventative maintenance, repair and capital equipment
replacement work at 804 Heinz Avenue and 2910 Seventh Street, Berkeley, California (the “ Letter
Agreement”)  is  also  terminated  and  Wareham  Property  Group,  XOMA  (US)  LLC,  Landlord,  and
Tenant shall have no further rights, obligations, or liabilities under the Letter Agreement arising after
the Early Termination Date.

On or about the Early Termination Date, Landlord shall tender an attornment letter, in substantially
the  form  attached  hereto  as Exhibit A ,  to  Subtenant,  pursuant  to  the  terms  and  conditions  of  the
Consent, establishing a direct contract between Landlord and Subtenant on the terms and conditions
of  the  Sublease.  Following  such  attornment,  Landlord,  as  landlord,  and  Subtenant,  as  tenant,  may
elect to modify or alter the legal relationship between Landlord and Subtenant. Except with respect to
the Maintenance Claims as set forth in and limited by Section 5 below, Tenant hereby assigns the
right to pursue any Claims (defined below) it may have against Subtenant arising from any acts or
omissions  of  Subtenant  under  the  Sublease  to  Landlord,  and  Landlord  shall  pursue  such  Claims
solely and directly against Subtenant, on a nonexclusive basis, such that either Landlord or Tenant
may  pursue  such  Claims  against  Subtenant;  provided,  however,  Tenant  agrees  that  it  shall  make
commercially  reasonable  efforts  to  assist  and  cooperate  with  Landlord  in  the  enforcement  of  the
terms  and  conditions  of  the  Sublease  and  Landlord  shall  promptly  reimburse  Tenant  for  any
reasonable,  actual,  out-of-pocket  expenses  reasonably  approved  by  Landlord  related  thereto,
following Tenant’s request for such reimbursement.

Subject to the agreements, representations, warranties and indemnities contained in this Termination
Agreement,  Tenant  remises,  releases,  quitclaims  and  surrenders  to  Landlord,  its  successors  and
assigns,  the  Lease  and  all  of  the  estate  and  rights  of  Tenant  in  and  to  the  Lease  and  the  Premises
effective  as  of  the  Early  Termination  Date.  Subject  to  the  agreements,  representations,  warranties
and  indemnities  contained  in  this  Termination  Agreement,  Landlord  accepts  the  surrender  of  the
Lease and the Premises effective as of the Early Termination Date.

Effective as of the Early Termination Date, Tenant forever releases and discharges Landlord from (a)
any and all claims, demands, damages, liabilities, losses or causes of action whatsoever arising prior
to the Early Termination Date (collectively, “ Claims”) that Tenant or its successors and assigns may
have  against  Landlord  arising  out  of  or  in  connection  with  the  Premises,  the  Lease,  or  the  Letter
Agreement, and (b) any obligations to be observed or performed by Landlord under the Lease or the
Letter  Agreement;  provided,  however,  that  any  Claims  related  to  Landlord’s  representations,
covenants  and  obligations  under  this  Termination  Agreement  or  surviving  indemnification
obligations under the Lease are expressly excluded from the foregoing release.

Effective as of the Early Termination Date, Landlord forever releases and discharges Tenant from (a)
any Claims that Landlord or its successors and assigns may have against Tenant arising out of or in
connection  with  the  Premises,  the  Lease,  or  the  Letter  Agreement  arising  on  or  after  the  Early
Termination Date, and (b) any obligations to be observed and performed by Tenant under the Lease
or Letter Agreement arising on or after the Early

2.

3.

4.

5.

077212\11436539v1 

2

 
 
 
Termination Date; provided, however, that any Claims related to Tenant’s representations, covenants,
and obligations under this Termination Agreement or surviving indemnification obligations under the
Lease  are  expressly  excluded  from  the  foregoing  release.  With  respect  to  any  Claims  related  to
Tenant’s maintenance, repair, and/or replacement obligations under the Lease or the Letter Agreement
(“Maintenance  Claims”),  Landlord  shall  notify  Tenant  in  writing  of  any  such  Maintenance  Claim
within sixty (60) days of the Early Termination Date, and if Landlord does not notify Tenant of any
Maintenance Claim during such sixty (60) day period, then, notwithstanding any other provision of
this Termination Agreement or the Lease to the contrary, Landlord shall have no further right to bring
or make any Maintenance Claim against Tenant and all such Maintenance Claims shall thereafter be
released and waived by Landlord. Except to the extent described above, the foregoing shall not amend
or otherwise modify the parties’ indemnity obligations set forth in Section 11 below.

6.

With respect to the releases set forth in Section 4 and Section 5 above, Landlord and Tenant each
acknowledge that it may hereafter discover facts different from or in addition to those it now knows
or  believes  to  be  true  with  respect  to  the  Claims  which  are  the  subject  of  the  releases,  and  each
expressly  agrees  to  assume  the  risk  of  the  possible  discovery  of  additional  or  different  facts,  and
agrees that the releases shall be and remain effective in all respects, regardless of such additional or
different facts.

Each of Landlord and Tenant hereby expressly waives and relinquishes all rights and benefits, if any,
each may have under Section 1542 of the California Civil Code with respect to the Claims which are
the subject of the releases above. California Civil Code Section 1542 reads as follows:

“A  GENERAL  RELEASE  DOES  NOT  EXTEND  TO  CLAIMS  THAT  THE  CREDITOR  OR
RELEASING PARTY DOES NOT KNOW OR SUSPECT TO EXIST IN HIS OR HER FAVOR AT
THE TIME OF EXECUTING THE RELEASE AND THAT IF KNOWN BY HIM OR HER WOULD
HAVE  MATERIALLY  AFFECTED  HIS  OR  HER  SETTLEMENT  WITH  THE  DEBTOR  OR
RELEASED PARTY.”

THE  UNDERSIGNED,  BEING  AWARE  OF  SAID  CODE  SECTION,  HEREBY  EXPRESSLY
WAIVE  ALL  RIGHTS  THEY  MAY  HAVE  THEREUNDER,  AS  WELL  AS  ANY  OTHER
STATUTES  OR  COMMON  LAW  PRINCIPLES  OF  SIMILAR  EFFECT  PERTAINING  TO  THE
RELEASES SET FORTH HEREIN.

/s/ RR
Landlord Initials

/s/ TB

  Tenant Initials

7.

Subject to the agreements, representations, warranties and indemnities contained in this Termination
Agreement, effective as of the Early Termination Date:

(a)

Tenant  shall  completely  vacate  and  surrender  the  second  (2nd)  floor  of  the  Premises  to
Landlord  in  accordance  with  the  terms  of  the  Lease.  Without  limitation,  Tenant  shall  leave
the second (2nd) floor of the Premises in a broom-clean condition and

077212\11436539v1 

3

 
 
 
 
 
 
free  of  all  movable  furniture  and  equipment  and  shall  deliver  the  keys  to  the  second  (2nd)
floor of the Premises to Landlord or Landlord's designee.

(b)

(c)

(d)

(e)

Tenant releases any and all claims to the Security Deposit, in the amount of $74,195.76, held
by Landlord pursuant to Article 5 of the Original Lease.

Tenant  releases  any  and  all  claims  to  any  remaining  amounts  of  the  Tenant  Improvement
Allowance which may be due to Tenant pursuant to Section 9.1(c) of the Original Lease.

Tenants assigns and delivers to Landlord the security deposit or letter of credit (together with
any documents and fees necessary to transfer the beneficial interest in any such letter of credit
to Landlord), as applicable, held by Tenant as sublandlord pursuant to the Sublease.

Tenant shall pay to Subtenant any allowance, improvement allowance, or other sums due to
Subtenant  by  Tenant  as  sublandlord,  if  any,  within  five  (5)  business  days  of  the  Early
Termination  Date.  In  connection  therewith,  Tenant  agrees  to  indemnify  and  hold  Landlord
and 
its  members,  principals,  beneficiaries,  partners,  officers,  directors,  employees,
mortgagee(s) and agents, and their respective principals and members harmless from any and
all claims of Subtenant with respect to any allowance, improvement allowance, or other sums
due to Subtenant by Tenant pursuant to the Sublease.

Tenant represents and warrants that (a) Tenant is the rightful owner of all of the Tenant's interest in
the Lease; (b) except with respect to the Sublease, Tenant has not made any disposition, assignment,
sublease,  or  conveyance  of  the  Lease  or  Tenant's  interest  therein;  (c)  as  of  the  Early  Termination
Date,  Tenant  has  no  knowledge  of  any  fact  or  circumstance  which  would  give  rise  to  any  claim,
demand, obligation, liability, action or cause of action arising out of or in connection with Tenant's
and/or  Subtenant’s  occupancy  of  the  Premises;  (d)  no  other  person  or  entity  has  an  interest  in  the
Lease, collateral or otherwise; and (e) there are no outstanding contracts for the supply of labor or
material made by Tenant, and no work has been done or is being done in, to or about the Premises,
by or at the request of Tenant, which has not been fully paid for and for which appropriate waivers of
mechanic's liens have not been obtained. Landlord represents and warrants to Tenant that, as of the
Early Termination Date, Landlord has no knowledge of any fact or circumstance which would give
rise  to  any  claim,  demand,  obligation,  liability,  action  or  cause  of  action  arising  out  of  or  in
connection  with  Tenant's  occupancy  of  the  Premises  (including  related  to  Tenant’s  repair,
maintenance, and replacement obligations under the Lease or Letter Agreement). For purposes of the
foregoing representation, Landlord’s knowledge shall be limited to the current actual knowledge of
Chris  Barlow,  Lisa  Vogel,  Grant  Gabbard  and  Seth  Battaglia,  at  the  time  of  execution  of  this
Termination  Agreement  and  not  any  constructive  knowledge  of  said  individuals  or  of  Landlord,
without any duty of investigation, it being understood and agreed that such individuals shall have no
personal  liability  in  any  manner  whatsoever  hereunder  or  otherwise  related  to  the  matters
contemplated hereby.

8.

077212\11436539v1 

4

 
 
 
9.

In  consideration  for  Landlord’s  agreement  to  enter  into  this  Termination Agreement,  Tenant  shall
pay to Landlord a “Termination Fee,” calculated as follows:

(a)

(b)

(c)

The sum of One Million One Hundred Thousand Dollars ($1,100,000.00), defined herein as
the “Base Fee”;

The Base Fee shall be increased by any Sublease Payments (defined below) actually received
by Tenant from Subtenant pursuant to the Sublease for that portion of the calendar year up to
and  including  the  Early  Termination  Date,  which  amount  is  currently  estimated  to  be
$205,147.25; and,

The Base Fee shall be decreased by the Base Rent and Rent Adjustments paid by Tenant to
Landlord during the period commencing as of the Rent Termination Date and ending on the
Early Termination Date, which amount is currently estimated to be $417,342.66.

The  Termination  Fee  shall  be  paid  by  Tenant  to  Landlord  within  one  (1)  business  day  of  the  mutual
execution and delivery of this Termination Agreement by cashier's or certified check or by wire transfer
of  immediately  available  funds  to  an  account  designated  by  Landlord.  Within  thirty  (30)  days  of  the
Early Termination Date, the parties shall reconcile any difference(s) between the estimated and actual
amounts set forth in this Section 9, and pay any actual amounts due as a result of such reconciliation.

10.

11.

12.

13.

For purposes of this Termination Agreement, any payments of Base Rent, Monthly Base Rent and
funds or sums due to Tenant under the Sublease of a nature that would be conceptually characterized
as  Rent,  Rent  Adjustments,  Operating  Expenses  or  Taxes  pursuant  to  the  Master  Lease  shall  be
defined  herein  as  “Sublease  Payments.”  Tenant  acknowledges  and  agrees  that  there  may  be  an
outstanding balance of Sublease Payments pertaining to unpaid Rent Adjustments due and owing by
Subtenant pursuant to the Sublease for that portion of the calendar year up to and including the Early
Termination Date. Tenant hereby assigns to Landlord the right to collect all such Sublease Payments
from Subtenant, which Landlord shall keep for its own account upon the successful collection of any
such amounts and Tenant hereby releases any claim it may have to such Sublease Payments.

Except  as  otherwise  set  forth  in  this  Termination  Agreement,  all  of  Landlord’s  and  Tenant’s
indemnity obligations set forth in the Lease, including, without limitation, Article 17 of the Original
Lease, shall survive the termination of the Lease pursuant to this Termination Agreement.

Each signatory of this Termination Agreement represents hereby that he or she has the authority to
execute and deliver the same on behalf of the party hereto for which such signatory is acting.

Tenant  hereby  represents  to  Landlord  that,  except  for  Cushman  &Wakefield  of  California,  Inc.
(“Tenant’s  Broker ”),  Tenant  has  dealt  with  no  broker,  and  that  no  broker  is  entitled  to
any commission or compensation, in connection with this Termination Agreement. Tenant shall pay
the commission due to Tenant’s Broker in connection with this

077212\11436539v1 

5

 
 
 
Termination  Agreement  pursuant  to  a  separate  agreement  with  Tenant’s  Broker.  Tenant  agrees  to
indemnify and hold Landlord and its members, principals, beneficiaries, partners, officers, directors,
employees, mortgagee(s) and agents, and the respective principals and members of any such agents
harmless from all claims of any brokers claiming to have represented Tenant in connection with this
Termination Agreement.

Landlord hereby represents to Tenant that Landlord has dealt with no broker, and that no broker is
entitled  to  any  commission  or  compensation,  in  connection  with  this  Termination  Agreement.
Landlord agrees to indemnify and hold Tenant and its members, principals, beneficiaries, partners,
officers, directors, employees, mortgagee(s) and agents, and the respective principals and members
of any such agents harmless from all claims of any brokers claiming to have represented Landlord in
connection with this Termination Agreement.

This Termination Agreement shall be binding upon and inure to the benefit of Landlord and Tenant
and their respective successors, assigns and related entities.

Tenant agrees that neither Tenant nor its agents or any other parties acting on behalf of Tenant shall
disclose  any  matters  set  forth  in  this  Termination  Agreement  or  disseminate  or  distribute  any
information concerning the terms, details or conditions hereof to any person, firm or entity without
obtaining  the  express  written  consent  of  Landlord  except  (a)  as  otherwise  provided  or  required  by
applicable law or court order, and (b) to Tenant’s attorneys, financial advisors, and other consultants
for the purpose of complying with the terms of this Termination Agreement.

Redress  for  any  claim  against  Landlord  under  the  Lease  and  this  Termination Agreement  shall  be
limited to and enforceable only against and to the extent of Landlord’s interest in the Building. The
obligations  of  Landlord  under  the  Lease  and  this  Termination Agreement  are  not  intended  to  and
shall not be personally binding on, nor shall any resort be had to the private properties of, any of its
trustees or board of directors and officers, as the case may be, its investment manager, the general
partners  thereof,  or  any  beneficiaries,  stockholders,  employees,  or  agents  of  Landlord  or  the
investment manager.

The obligations of Tenant under the Lease and this Termination Agreement are not intended to and
shall not be personally binding on, nor shall any resort be had to the private properties of, any of its
board of directors, officers, stockholders, employees, or agents of Tenant.

Landlord  agrees  that  Tenant  shall  not  be  required  to  remove  any  Tenant  Alterations,  Leasehold
Improvements, or Required Removables from the Premises in connection with Tenant’s surrender of
the Premises pursuant to this Termination Agreement (including but not limited to any improvements
constructed or installed by or for Subtenant). On or about the Early Termination Date, Landlord shall
tender an attornment letter to Subtenant, as provided above.

14.

15.

16.

17.

18.

19.

20.

The provisions of this Termination Agreement shall be construed and enforced in accordance with
the laws of the State of California. Each party hereto acknowledges that:

077212\11436539v1 

6

 
 
 
(i) each party hereto is of equal bargaining strength; (ii) each such party has actively participated in
the drafting, preparation, and negotiation of this Termination Agreement; (iii) each such party has had
the  opportunity  to  consult  with  such  party's  attorneys  and  advisors  relative  to  entering  into  this
Termination  Agreement;  and  (iv)  any  rule  of  construction  to  the  effect  that  ambiguities  are  to  be
resolved against the drafting party shall not apply in the interpretation of this Termination Agreement,
any portion hereof or any amendments hereto.

21.

22.

23.

24.

25.

This  Termination  Agreement,  including Exhibit A ,  contains  all  of  the  agreements  of  the  parties
hereto  with  respect  to  the  matters  contained  herein,  and  no  prior  agreement,  arrangement  or
to  any  such  matters  shall  be  effective  for  any  purpose.  No
understanding  pertaining 
alterations, modifications, or interpretations hereof shall be binding unless in writing and signed by
the parties hereto.

In  the  event  of  any  conflict  between  the  terms,  covenants,  and  conditions  of  this  Termination
Agreement  and  the  terms,  covenants,  and  conditions  of  the  Consent,  the  terms,  covenants,  and
conditions of this Termination Agreement shall control as between Landlord and Tenant.

Each party hereto covenants to execute, with acknowledgment, verification, or affidavit, if required,
any and all documents and writings, and to perform any and all other acts, that may be necessary or
desirable to implement, accomplish, and/or consummate the terms of this Termination Agreement.

Every provision of this Termination Agreement is intended to be severable. If any term or provision
hereof is illegal or invalid for any reason whatsoever, then such illegality or invalidity shall not affect
the validity of the remainder of this Termination Agreement.

This  Termination Agreement  may  be  executed  in  counterparts,  each  of  which  shall  be  deemed  an
original, but all of which, together, shall  constitute  one  and  the  same  Termination Agreement.  For
purposes of this Termination Agreement, signatures by facsimile or electronic PDF shall be binding
to the same extent as original signatures.

077212\11436539v1 

7

 
 
 
IN WITNESS WHEREOF, Landlord and Tenant have executed this Termination Agreement on the

day and year first above written.

LANDLORD:

  TENANT:

7  STREET PROPERTY GENERAL
TH
PARTNERSHIP,
a California general partnership

  XOMA CORPORATION,
a Delaware corporation

Wareham-NZI, LLC,
By:
Managing General Partner
Its:
By:
/s/ Richard Robbins
Name: Richard K. Robbins
Title: Manager
Dated: 12/18/2019

/s/ Tom Burns

  By:
  Name: Tom Burns
  Title: CFO
  Dated: 12/17/2019

[signatures continue on following page]

077212\11436539v1 

8

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
AGREED AND ACKNOWLEDGED:

XOMA (US) LLC,
a Delaware limited liability company

/s/ Tom Burns

By:
Name: Tom Burns
Title:
Dated:

CFO
12/17/2019

AGREED  AND  ACKNOWLEDGED  SPECIFICALLY  WITH  RESPECT  TO  THE  TERMINATION
OF THE LETTER AGREEMENT:

WAREHAM PROPERTY GROUP, INC.,
a California corporation

By:
/s/ Richard Robbins
Name: Richard K. Robbins
Title: Manager
Dated:

12/18/2019

077212\11436539v1 

9

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit A

Form of Attornment Letter

December ___, 2019

Via Federal Express

[SUBTENANT] 
[ADDRESS]

RE:

Sublease Agreement dated

Ladies and Gentlemen:

Please be advised that effective as of December __, 2019, the Master Lease underlying your Sublease,
by and between Landlord and Sublandlord, terminated. Pursuant to Section 8 of the Consent, Landlord has
the  right  to  require  Subtenant  to  attorn  to  Landlord  upon  the  terms  and  conditions  of  the  Sublease  for  the
remainder of the term of the Sublease. A copy of the Consent is attached hereto and incorporated herein by
reference. Accordingly, please take notice that Landlord hereby exercises its option of attornment, Subtenant
has agreed to attorn to Landlord as its landlord and such attornment is effective and self-operative without the
execution of any further instruments, immediately upon Landlord’s exercise of such option.

Effective  as  of  December  ___,  2019,  therefore,  Landlord  succeeded  to  Sublandlord’s  interest  in  the
Sublease, and Subtenant will attorn to Landlord as sublandlord under the Sublease. The Sublease shall remain
in  effect  as  a  direct  sublease  between  Landlord  and  Subtenant,  on  all  of  the  terms  and  conditions  of  the
Sublease, including the payment of all Base Rent and Operating Expenses and Taxes and all other amounts
due and owing under the Sublease, including unpaid amounts, provided that Landlord shall be deemed to be
both landlord under the Master Lease and sublandlord under the Sublease.

Please note that all rent due shall be paid directly to Landlord at the following address:

[TO BE PROVIDED]

Checks should be made payable to “[INSERT LANDLORD ENTITY]”.

Landlord's address for notices under the Sublease shall be as follows:

[INSERT ADDRESS]

With a copy to:

[INSERT ADDRESS]

Please contact Ms. Lisa Vogel at (415) 457-4964 with any questions.

077212\11436539v1 

10

 
 
 
 
Sincerely,

[LANDLORD SIGNATURE BLOCK]

Enclosure

cc: Pamela A. Lakey, Esq.

SSL Law Firm, LLP

077212\11436539v1 

11

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
LEASE TERMINATION AGREEMENT

Exhibit 10.61

THIS  LEASE  TERMINATION  AGREEMENT (this  “Termination Agreement”)  is  made  as  of
December 17, 2019 (the “Effective Date”), by and between 7TH STREET PROPERTIES II, a California
limited partnership (“Landlord”) and XOMA CORPORATION, a Delaware corporation (“Tenant”).

RECITALS:

A.

B.

C.

D.

Landlord  and  Tenant  are  parties  to  that  certain  lease  dated  as  of  February  13,  2013  (the  “Lease”)
relating to approximately 35,000 rentable square feet (the “Premises”) comprising the entire building
located at 804 Heinz Avenue, Berkeley, California (the “ Building”), all as more particularly described
in the Lease. The capitalized terms used in this Termination Agreement shall have the same definitions
as set forth in the Lease to the extent that such capitalized terms are defined therein and not redefined in
this Termination Agreement.

Tenant,  as  sublandlord,  and  Memphis  Meats,  Inc.,  a  Delaware  corporation  (“Memphis  Meats”),  as
subtenant,  are  parties  to  that  certain  Sublease Agreement  dated  November  21,  2017,  as  amended  by
that  certain  First  Amendment  to  Sublease  Agreement  dated  December  13,  2018  (as  amended,  the
“Memphis Meats Sublease”),  pertaining  to  approximately  20,038  rentable  square  feet,  described  as
the entire second (2nd) floor of the Premises. Landlord consented to the Memphis Meats Sublease by
that  certain  Consent  to  Sublease  dated  December  13,  2017  and  Consent  to  First  Amendment  to
Sublease  Agreement  dated  January  16,  2019  (collectively,  the  “ Memphis  Meats  Consent”).  The
Sublease by its terms is scheduled to expire on April 30, 2023.

Tenant, as sublandlord, and Newomics, Inc., a Delaware corporation (“Newomics”), as subtenant, are
parties  to  that  certain  Sublease  Agreement  dated  April  14,  2018,  as  amended  by  that  certain  First
Amendment  to  Sublease  Agreement  dated  December  13,  2018  (as  amended,  the  “Newomics
Sublease”), pertaining to approximately 6,676 rentable square feet, described as a portion of the ground
floor  of  the  Premises.  Landlord  consented  to  the  Sublease  by  that  certain  Consent  to  Sublease  dated
April  27,  2018,  and  Consent  to  First  Amendment  to  Sublease  Agreement  dated  January  16,  2019
(collectively, the “Newomics Consent”). The Sublease by its terms is scheduled to expire on April 30,
2023.

Tenant,  as  sublandlord,  and  Rodan  &  Fields,  LLC,  a  Delaware  limited  liability  company
(“Rodan/Fields”), as subtenant, are parties to that certain Sublease Agreement dated January 10, 2019
(the “Rodan/Fields Sublease”), pertaining to approximately 8,286 rentable square feet, described as a
portion of the ground floor of the Premises. Landlord consented to the Sublease by that certain Consent
to  Sublease  dated  January  18,  2019  (the  “Rodan/Fields  Consent”).  The  Sublease  by  its  terms  is
scheduled to expire on April 30, 2023.

077212\11436554v1 

 
 
 
 
E.

F.

The Memphis Meats Sublease, the Newomics Sublease, and the Rodan/Fields Sublease are sometimes
referred to herein collectively as the “Subleases.” Memphis Meats, Newomics, and Rodan/Fields are
sometimes  referred  to  herein  collectively  as  the  “Subtenants.”  The  Memphis  Meats  Consent,
Newomics  Consent,  and  Rodan/Fields  Consent  are  sometimes  referred  to  herein  collectively  as  the
“Consents.”

The  Term  is  scheduled  to  expire  on  April  30,  2023  (the  “ Stated  Expiration  Date”),  and  Tenant
desires  to  terminate  the  Lease  prior  to  the  Stated  Expiration  Date.  Landlord  has  agreed  to  such
termination on the terms and conditions contained in this Termination Agreement.

NOW, THEREFORE, in consideration of the above recitals which by this reference are incorporated
herein,  the  mutual  covenants  and  conditions  contained  herein  and  other  valuable  consideration,  the  receipt
and sufficiency of which are hereby acknowledged, Landlord and Tenant agree as follows:

1.

2.

Effective as of the Effective Date (the “Early Termination Date”)  and  subject  to  the  agreements,
representations,  warranties  and  indemnities  contained  in  this  Termination  Agreement,  including,
without  limitation,  payment  of  the  Termination  Fee  described  in  Section  9  below,  the  Lease  is
terminated and the Term of the Lease shall expire with the same force and effect as if the Term was,
by  the  provisions  thereof,  fixed  to  expire  on  the  Early  Termination  Date,  provided,  Tenant’s
obligation  to  pay  Monthly  Base  Rent  and  Rent Adjustments  under  the  Lease  shall  be  terminated
effective  as  of  September  15,  2019  (the  “Rent  Termination  Date”).  Subject  to  the  terms  and
conditions  of  Section  5  below,  effective  as  of  the  Early  Termination  Date,  that  certain  letter
agreement  dated  July  27,  2016,  between  Wareham  Property  Group  (on  behalf  of  Landlord)  and
XOMA  (US)  LLC  (on  behalf  of  Tenant)  regarding  the  performance  of  certain  preventative
maintenance,  repair  and  capital  equipment  replacement  work  at  804  Heinz  Avenue  and  2910
Seventh  Street,  Berkeley,  California  (the  “Letter  Agreement”)  is  also  terminated  and  Wareham
Property Group, XOMA (US) LLC, Landlord, and Tenant shall have no further rights, obligations, or
liabilities under the Letter Agreement arising after the Early Termination Date.

On or about the Early Termination Date, Landlord shall tender an attornment letter, in substantially
the  form  attached  hereto  as Exhibit  A ,  to  each  of  the  Subtenants,  pursuant  to  the  terms  and
conditions of the Consents, establishing a direct contract between Landlord and each Subtenant on
the  terms  and  conditions  of  the  applicable  Sublease.  Following  such  attornment,  Landlord,  as
landlord, and each Subtenant, as tenant, may elect to modify or alter the legal relationship between
Landlord and Subtenants. Except with respect to the Maintenance Claims as set forth in and limited
by  Section  5  below,  Tenant  hereby  assigns  the  right  to  pursue  any  Claims  (defined  below)  it  may
have against Subtenants arising from any acts or omissions of each Subtenant under the applicable
Sublease  to  Landlord,  and  Landlord  shall  pursue  such  Claims  solely  and  directly  against  such
Subtenant,  on  a  non-exclusive  basis,  such  that  either  Landlord  or  Tenant  may  pursue  such  Claims
against  Subtenants;  provided,  however,  Tenant  agrees  that  it  shall  make  commercially  reasonable
efforts to assist and cooperate with Landlord in the enforcement of the terms and conditions of the
Subleases and Landlord shall promptly reimburse Tenant for any reasonable, actual,

077212\11436554v1 

2

 
 
 
3.

4.

5.

6.

out-of-pocket expenses reasonably approved by Landlord related thereto, following Tenant’s request
for such reimbursement.

Subject to the agreements, representations, warranties and indemnities contained in this Termination
Agreement,  Tenant  remises,  releases,  quitclaims  and  surrenders  to  Landlord,  its  successors  and
assigns,  the  Lease  and  all  of  the  estate  and  rights  of  Tenant  in  and  to  the  Lease  and  the  Premises
effective  as  of  the  Early  Termination  Date.  Subject  to  the  agreements,  representations,  warranties
and  indemnities  contained  in  this  Termination  Agreement,  Landlord  accepts  the  surrender  of  the
Lease and the Premises effective as of the Early Termination Date.

Effective as of the Early Termination Date, Tenant forever releases and discharges Landlord from (a)
any and all claims, demands, damages, liabilities, losses or causes of action whatsoever arising prior
to the Early Termination Date (collectively, “ Claims”) that Tenant or its successors and assigns may
have  against  Landlord  arising  out  of  or  in  connection  with  the  Premises,  the  Lease,  or  the  Letter
Agreement, and (b) any obligations to be observed or performed by Landlord under the Lease or the
Letter  Agreement;  provided,  however,  that  any  Claims  related  to  Landlord’s  covenants  and
obligations  under  this  Termination Agreement  or  surviving  indemnification  obligations  under  the
Lease are expressly excluded from the foregoing release.

Effective as of the Early Termination Date, Landlord forever releases and discharges Tenant from (a)
any Claims that Landlord or its successors and assigns may have against Tenant arising out of or in
connection  with  the  Premises,  the  Lease,  or  the  Letter  Agreement  arising  on  or  after  the  Early
Termination Date, and (b) any obligations to be observed and performed by Tenant under the Lease
or  Letter Agreement  arising  on  or  after  the  Early  Termination  Date;  provided,  however,  that  any
Claims  related  to  Tenant’s  representations,  covenants,  and  obligations  under  this  Termination
Agreement or surviving indemnification obligations under the Lease are expressly excluded from the
foregoing  release.  With  respect  to  any  Claims  related  to  Tenant’s  maintenance,  repair,  and/or
replacement  obligations  under  the  Lease  or  the  Letter  Agreement  (“Maintenance  Claims”),
Landlord shall notify Tenant in writing of any such Maintenance Claim within sixty (60) days of the
Early Termination Date, and if Landlord does not notify Tenant of any Maintenance Claim during
such sixty (60) day period, then, notwithstanding any other provision of this Termination Agreement
or the Lease to the contrary, Landlord shall have no further right to bring or make any Maintenance
Claim  against  Tenant  and  all  such  Maintenance  Claims  shall  thereafter  be  released  and  waived  by
Landlord. Except to the extent described above, the foregoing shall not amend or otherwise modify
the parties’ indemnity obligations set forth in Section 11 below.

With respect to the releases set forth in Section 4 and Section 5 above, Landlord and Tenant each
acknowledge that it may hereafter discover facts different from or in addition to those it now knows
or  believes  to  be  true  with  respect  to  the  Claims  which  are  the  subject  of  the  releases,  and  each
expressly  agrees  to  assume  the  risk  of  the  possible  discovery  of  additional  or  different  facts,  and
agrees that the releases shall be and remain effective in all respects, regardless of such additional or
different facts.

077212\11436554v1 

3

 
 
 
Each of Landlord and Tenant hereby expressly waives and relinquishes all rights and benefits, if any,
each may have under Section 1542 of the California Civil Code with respect to the Claims which are
the subject of the releases above. California Civil Code Section 1542 reads as follows:

“A  GENERAL  RELEASE  DOES  NOT  EXTEND  TO  CLAIMS  THAT  THE  CREDITOR  OR
RELEASING PARTY DOES NOT KNOW OR SUSPECT TO EXIST IN HIS OR HER FAVOR AT
THE TIME OF EXECUTING THE RELEASE AND THAT IF KNOWN BY HIM OR HER WOULD
HAVE  MATERIALLY  AFFECTED  HIS  OR  HER  SETTLEMENT  WITH  THE  DEBTOR  OR
RELEASED PARTY.”

THE  UNDERSIGNED,  BEING  AWARE  OF  SAID  CODE  SECTION,  HEREBY  EXPRESSLY
WAIVE  ALL  RIGHTS  THEY  MAY  HAVE  THEREUNDER,  AS  WELL  AS  ANY  OTHER
STATUTES  OR  COMMON  LAW  PRINCIPLES  OF  SIMILAR  EFFECT  PERTAINING  TO  THE
RELEASES SET FORTH HEREIN.

/s/ RR
Landlord Initials

/s/ TB
Tenant Initials

7.

Subject to the agreements, representations, warranties and indemnities contained in this Termination
Agreement, effective as of the Early Termination Date:

(a)

(b)

(c)

Tenant  releases  any  and  all  claims  to  the  Security  Deposit,  in  the  amount  of  $146,486.89,
held by Landlord pursuant to Article 5 of the Lease.

Tenant assigns and delivers to Landlord the security deposits or letters of credit (together with
any documents and fees necessary to transfer the beneficial interest in any such letter of credit
to Landlord), as applicable, held by Tenant as sublandlord under each of the Memphis Meats
Sublease, the Newomics Sublease and the Rodan/Fields Sublease.

Tenant  shall  pay  to  Rodan/Fields  any  amounts  remaining  from  the  “Allowance”  due  to
Rodan/Fields  pursuant  to  Section  6  of  the  Rodan/Fields  Sublease,  if  any,  within  five  (5)
business days of the Early Termination Date. In addition to the foregoing, Tenant shall pay to
Memphis  Meats  and/or  Newomics,  within  five  (5)  business  days  of  the  Early  Termination
Date,  any  amounts  remaining  from  the  “Allowance”  due  to  such  subtenant  by  Tenant  as
sublandlord in connection with either of the Memphis Meats Sublease and/or the Newomics
Sublease, if any, as the case may be. Tenant agrees to indemnify and hold Landlord and its
members, principals, beneficiaries, partners, officers, directors, employees, mortgagee(s) and
agents,  and  their  respective  principals  and  members  harmless  from  any  and  all  claims  of
either Rodan/Fields, Memphis Meats and/or Newomics, as the case may be, with respect to
any  improvement  allowance  due  to  such  Subtenant  by  Tenant  pursuant  to  the  applicable
Sublease.

8.

Tenant represents and warrants that (a) Tenant is the rightful owner of all of the Tenant's interest in
the Lease; (b) except with respect to the Memphis Meats Sublease, the Newomics Sublease and the
Rodan/Fields Sublease, Tenant has not made any disposition,

077212\11436554v1 

4

 
 
 
assignment,  sublease,  or  conveyance  of  the  Lease  or  Tenant's  interest  therein;  (c)  as  of  the  Early
Termination Date, Tenant has no knowledge of any fact or circumstance which would give rise to any
claim,  demand,  obligation,  liability,  action  or  cause  of  action  arising  out  of  or  in  connection  with
Tenant's  and/or  Subtenants’  occupancy  of  the  Premises,  except  with  respect  to  the  previous  dispute
between  Landlord  and  Tenant  regarding  the  so-called  “Remedial  and  Deferred  Work”  costs  which
have  been  resolved  and  settled  by  the  parties  pursuant  to  this  Termination Agreement;  (d)  no  other
person or entity has an interest in the Lease, collateral or otherwise; and (e) there are no outstanding
contracts for the supply of labor or material made by Tenant, and no work has been done or is being
done in, to or about the Premises, by or at the request of Tenant, which has not been fully paid for and
for  which  appropriate  waivers  of  mechanic's  liens  have  not  been  obtained.  Landlord  represents  and
warrants to Tenant that, as of the Early Termination Date, Landlord has no knowledge of any fact or
circumstance  which  would  give  rise  to  any  claim,  demand,  obligation,  liability,  action  or  cause  of
action arising out of or in connection with Tenant's occupancy of the Premises (including related to
Tenant’s  repair,  maintenance,  and  replacement  obligations  under  the  Lease  or  Letter  Agreement),
except  with  respect  to  the  previous  dispute  between  Landlord  and  Tenant  regarding  the  so-called
“Remedial and Deferred Work” costs which have been resolved and settled by the parties pursuant to
this  Termination  Agreement.  For  purposes  of  the  foregoing  representation,  Landlord’s  knowledge
shall be limited to the current actual knowledge of Chris Barlow, Lisa Vogel, Grant Gabbard and Seth
Battaglia, at the time of execution of this Termination Agreement and not any constructive knowledge
of said individuals or of Landlord, without any duty of investigation, it being understood and agreed
that such individuals shall have no personal liability in any manner whatsoever hereunder or otherwise
related to the matters contemplated hereby.

9.

In  consideration  for  Landlord’s  agreement  to  enter  into  this  Termination Agreement,  Tenant  shall
pay to Landlord a “Termination Fee,” calculated as follows:

(a)

(b)

(c)

The  sum  of  Five  Hundred  Thousand  Dollars  ($500,000.00),  defined  herein  as  the  “Base
Fee”;

The Base Fee shall be increased by any Sublease Payments (defined below) actually received
by Tenant from Subtenants pursuant to the Subleases for that portion of the calendar year up
to  and  including  the  Early  Termination  Date,  which  amount  is  currently  estimated  to  be
$618,655.42; and,

The Base Fee shall be decreased by the Base Rent and Rent Adjustments paid by Tenant to
Landlord during the period commencing as of the Rent Termination Date and ending on the
Early Termination Date, which amount is currently estimated to be $747,583.38.

The  Termination  Fee  shall  be  paid  by  Tenant  to  Landlord  within  one  (1)  business  day  of  the  mutual
execution and delivery of this Termination Agreement by cashier's or certified check or by wire transfer
of  immediately  available  funds  to  an  account  designated  by  Landlord.  Within  thirty  (30)  days  of  the
Early Termination Date, the parties shall reconcile

077212\11436554v1 

5

 
 
 
any  difference(s)  between  the  estimated  and  actual  amounts  set  forth  in  this  Section  9,  and  pay  any
actual amounts due as a result of such reconciliation.

10.

11.

12.

13.

14.

15.

16.

For purposes of this Termination Agreement, any payments of Base Rent, Monthly Base Rent and
funds  or  sums  due  to  Tenant  under  the  Subleases  of  a  nature  that  would  be  conceptually
characterized as Rent, Rent Adjustments, Operating Expenses or Taxes pursuant to the Master Lease
shall be defined herein as “Sublease Payments.” Tenant acknowledges and agrees that there may be
an outstanding balance of Sublease Payments pertaining to unpaid Rent Adjustments due and owing
by Subtenants pursuant to the Subleases for that portion of the calendar year up to and including the
Early  Termination  Date.  Tenant  hereby  assigns  to  Landlord  the  right  to  collect  all  such  Sublease
Payments  from  Subtenants,  which  Landlord  shall  keep  for  its  own  account  upon  the  successful
collection of any such amounts and Tenant hereby releases any claim it may have to such Sublease
Payments.

Except  as  otherwise  set  forth  in  this  Termination  Agreement,  all  of  Landlord’s  and  Tenant’s
indemnity obligations set forth in the Lease, including, without limitation, Article 17 of the Original
Lease, shall survive the termination of the Lease pursuant to this Termination Agreement.

Each signatory of this Termination Agreement represents hereby that he or she has the authority to
execute and deliver the same on behalf of the party hereto for which such signatory is acting.

Tenant  hereby  represents  to  Landlord  that,  except  for  Cushman  &Wakefield  of  California,  Inc.
(“Tenant’s  Broker ”),  Tenant  has  dealt  with  no  broker,  and  that  no  broker  is  entitled  to
any commission or compensation, in connection with this Termination Agreement. Tenant shall pay
the commission due to Tenant’s Broker in connection with this Termination Agreement pursuant to a
separate  agreement  with  Tenant’s  Broker.  Tenant  agrees  to  indemnify  and  hold  Landlord  and  its
members, principals, beneficiaries, partners, officers, directors, employees, mortgagee(s) and agents,
and  the  respective  principals  and  members  of  any  such  agents  harmless  from  all  claims  of  any
brokers claiming to have represented Tenant in connection with this Termination Agreement.

Landlord hereby represents to Tenant that Landlord has dealt with no broker, and that no broker is
entitled  to  any  commission  or  compensation,  in  connection  with  this  Termination  Agreement.
Landlord agrees to indemnify and hold Tenant and its members, principals, beneficiaries, partners,
officers, directors, employees, mortgagee(s) and agents, and the respective principals and members
of any such agents harmless from all claims of any brokers claiming to have represented Landlord in
connection with this Termination Agreement.

This Termination Agreement shall be binding upon and inure to the benefit of Landlord and Tenant
and their respective successors, assigns and related entities.

Tenant agrees that neither Tenant nor its agents or any other parties acting on behalf of Tenant shall
disclose any matters set forth in this Termination Agreement or disseminate

077212\11436554v1 

6

 
 
 
or distribute any information concerning the terms, details or conditions hereof to any person, firm or
entity without obtaining the express written consent of Landlord except (a) as otherwise provided or
required by applicable law or court order, and (b) to Tenant’s attorneys, financial advisors, and other
consultants for the purpose of complying with the terms of this Termination Agreement.

Redress  for  any  claim  against  Landlord  under  the  Lease  and  this  Termination Agreement  shall  be
limited to and enforceable only against and to the extent of Landlord’s interest in the Building. The
obligations  of  Landlord  under  the  Lease  and  this  Termination Agreement  are  not  intended  to  and
shall not be personally binding on, nor shall any resort be had to the private properties of, any of its
trustees or board of directors and officers, as the case may be, its investment manager, the general
partners  thereof,  or  any  beneficiaries,  stockholders,  employees,  or  agents  of  Landlord  or  the
investment manager.

The obligations of Tenant under the Lease and this Termination Agreement are not intended to and
shall not be personally binding on, nor shall any resort be had to the private properties of, any of its
board of directors, officers, stockholders, employees, or agents of Tenant.

Landlord  acknowledges  that,  except  for  the  Subtenants  occupying  the  Premises  pursuant  to  the
Subleases, Tenant has vacated the Premises as of the Early Termination Date, and Tenant shall not
be  required  to  remove  any  Tenant Alterations,  Leasehold  Improvements,  or  Required  Removables
from  the  Premises  in  connection  with  Tenant’s  surrender  of  the  Premises  pursuant  to  this
Termination Agreement (including but not limited to any improvements constructed or installed by
or for the Subtenants). On or about the Early Termination Date, Landlord shall tender an attornment
letter to each Subtenant, as provided above.

The provisions of this Termination Agreement shall be construed and enforced in accordance with
the laws of the State of California. Each party hereto acknowledges that: (i) each party hereto is of
equal bargaining strength; (ii) each such party has actively participated in the drafting, preparation,
and  negotiation  of  this  Termination  Agreement;  (iii)  each  such  party  has  had  the  opportunity  to
consult with such party's attorneys and advisors relative to entering into this Termination Agreement;
and (iv) any rule of construction to the effect that ambiguities are to be resolved against the drafting
party shall not apply in the interpretation of this Termination Agreement, any portion hereof or any
amendments hereto.

This  Termination  Agreement,  including Exhibit A ,  contains  all  of  the  agreements  of  the  parties
hereto  with  respect  to  the  matters  contained  herein,  and  no  prior  agreement,  arrangement  or
to  any  such  matters  shall  be  effective  for  any  purpose.  No
understanding  pertaining 
alterations, modifications, or interpretations hereof shall be binding unless in writing and signed by
the parties hereto.

17.

18.

19.

20.

21.

22.

In  the  event  of  any  conflict  between  the  terms,  covenants,  and  conditions  of  this  Termination
Agreement and the terms, covenants, and conditions of the Consent, the terms,

077212\11436554v1 

7

 
 
 
covenants,  and  conditions  of  this  Termination  Agreement  shall  control  as  between  Landlord  and
Tenant.

23.

24.

25.

Each party hereto covenants to execute, with acknowledgment, verification, or affidavit, if required,
any and all documents and writings, and to perform any and all other acts, that may be necessary or
desirable to implement, accomplish, and/or consummate the terms of this Termination Agreement.

Every provision of this Termination Agreement is intended to be severable. If any term or provision
hereof is illegal or invalid for any reason whatsoever, then such illegality or invalidity shall not affect
the validity of the remainder of this Termination Agreement.

This  Termination Agreement  may  be  executed  in  counterparts,  each  of  which  shall  be  deemed  an
original, but all of which, together, shall  constitute  one  and  the  same  Termination Agreement.  For
purposes of this Termination Agreement, signatures by facsimile or electronic PDF shall be binding
to the same extent as original signatures.

077212\11436554v1 

8

[signatures on following page]

 
 
 
 
IN WITNESS WHEREOF, Landlord and Tenant have executed this Termination Agreement on the

day and year first above written.

LANDLORD:

  TENANT:

7TH STREET PROPERTIES II,
a California general partnership

  XOMA CORPORATION,
a Delaware corporation

/s/ Tom Burns

  By:
  Name: Tom Burns
  Title: CFO
  Dated: 12/17/2019

By:
Its:

Seventh II Corporation,
Managing General Partner

By:
/s/ Richard Robbins
Name: Richard K. Robbins
Title:
President
Dated: 12/18/2019

AGREED AND ACKNOWLEDGED:

XOMA (US) LLC,
a Delaware limited liability company

/s/ Tom Burns

By:
Name: Tom Burns
Title: CFO
Dated: 12/17/2019

AGREED  AND  ACKNOWLEDGED  SPECIFICALLY  WITH  RESPECT  TO  THE  TERMINATION
OF THE LETTER AGREEMENT:

WAREHAM PROPERTY GROUP, INC.,
a California corporation

By:
/s/ Richard Robbins
Name: Richard K. Robbins
Title: Manager
Dated: 12/18/2019

077212\11436554v1 

9

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit A

Form of Attornment Letter

December ___, 2019

Via Federal Express

[SUBTENANT] 
[ADDRESS]

RE:

Sublease Agreement dated

Ladies and Gentlemen:

Please be advised that effective as of December __, 2019, the Master Lease underlying your Sublease,
by and between Landlord and Sublandlord, terminated. Pursuant to Section 8 of the Consent, Landlord has
the  right  to  require  Subtenant  to  attorn  to  Landlord  upon  the  terms  and  conditions  of  the  Sublease  for  the
remainder of the term of the Sublease. A copy of the Consent is attached hereto and incorporated herein by
reference. Accordingly, please take notice that Landlord hereby exercises its option of attornment, Subtenant
has agreed to attorn to Landlord as its landlord and such attornment is effective and self-operative without the
execution of any further instruments, immediately upon Landlord’s exercise of such option.

Effective  as  of  December  ___,  2019,  therefore,  Landlord  succeeded  to  Sublandlord’s  interest  in  the
Sublease, and Subtenant will attorn to Landlord as sublandlord under the Sublease. The Sublease shall remain
in  effect  as  a  direct  sublease  between  Landlord  and  Subtenant,  on  all  of  the  terms  and  conditions  of  the
Sublease, including the payment of all Base Rent and Operating Expenses and Taxes and all other amounts
due and owing under the Sublease, including unpaid amounts, provided that Landlord shall be deemed to be
both landlord under the Master Lease and sublandlord under the Sublease.

Please note that all rent due shall be paid directly to Landlord at the following address:

[TO BE PROVIDED]

Checks should be made payable to “[INSERT LANDLORD ENTITY]”.

Landlord's address for notices under the Sublease shall be as follows:

[INSERT ADDRESS]

With a copy to:

[INSERT ADDRESS]

Please contact Ms. Lisa Vogel at (415) 457-4964 with any questions.

077212\11436554v1 

10

 
 
 
 
Sincerely,

[LANDLORD SIGNATURE BLOCK]

Enclosure

cc: Pamela A. Lakey, Esq.

SSL Law Firm, LLP

077212\11436554v1 

11

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Subsidiaries of the Company
XOMA Technology Ltd.
XOMA (US) LLC
XOMA UK Limited

Jurisdiction of Organization
Bermuda
Delaware
United Kingdom

Exhibit 21.1

 
 
 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statements (Form S-8 Nos. 333-108306, 333-151416, 333-171429, 333-174730, 333-181849,
333-198719, 333-204367, 333-212238, 333-218378 and 333-232398) pertaining to the 1981 Share Option Plan, the Restricted Share Plan, the 2015 Employee
Stock Purchase Plan, the Amended and Restated 2010 Long Term Incentive and Stock Award Plan, and the Amended 2015 Employee Share Purchase Plan of
XOMA Corporation and in the Registration Statement (Form S-3 Nos. 333-196707 and 333- 223493) of XOMA Corporation and in the related Prospectus of
our reports dated March 10, 2020, relating to the consolidated financial statements of  XOMA Corporation and the effectiveness of XOMA Corporation’s
internal control over financial reporting appearing in this Annual Report on Form 10-K for the year ended December 31, 2019.

Exhibit 23.1

/s/ Deloitte & Touche LLP
San Francisco, California
March 10, 2020

 
 
 
 
Exhibit 31.1

I, James R. Neal, certify that:

1. I have reviewed this annual report on Form 10-K of XOMA Corporation;

Certification

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 officers 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))) for the registrant and we 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 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 officers 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 registrant’s board of directors (or persons performing the equivalent
function):

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 10, 2020

/s/ JAMES R. NEAL
James R. Neal
Chief Executive Officer

 
 
 
 
Exhibit 31.2

I, Thomas Burns, certify that:

1. I have reviewed this annual report on Form 10-K of XOMA Corporation;

Certification

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 officers 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))) for the registrant and we 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 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 officers 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 registrant’s board of directors (or persons performing the equivalent
function):

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 10, 2020

/s/ THOMAS BURNS
Thomas Burns
Senior Vice President, Finance and Chief Financial Officer

 
 
 
 
CERTIFICATION

Exhibit 32.1

Pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended, (the “Exchange Act”) and
Section  1350  of  Chapter  63  of  Title  18  of  the  United  States  Code  (18  U.S.C.  §1350),  James  R.  Neal,  Chief  Executive  Officer  of
XOMA  Corporation  (the  “Company”),  and  Thomas  Burns,  Senior  Vice  President,  Finance  and  Chief  Financial  Officer  of  the
Company, each hereby certifies that, to the best of his or her knowledge:

1. The Company’s Annual Report on Form 10-K for the year ended December 31, 2019, to which this Certification is attached

as Exhibit 32.1, fully complies with the requirements of Section 13(a) or Section 15(d) of the Exchange Act; and

2. The  information  contained  in  Exhibit  32.1  fairly  presents,  in  all  material  respects,  the  financial  condition  and  results  of

operations of the Company.

IN WITNESS WHEREOF, the undersigned have set their hands hereto as of the 10  day of March, 2020

th

/s/ JAMES R. NEAL
James R. Neal
Chief Executive Officer

3. This  certification  accompanies  the  Form  10-K  to  which  it  relates,  is  not  deemed  filed  with  the  Securities  and  Exchange
Commission and is not to be incorporated by reference into any filing of XOMA Corporation under the Securities Act of
1933, as amended, or the Securities Exchange Act of 1934, as amended (whether made before or after the date of the Form
10-K), irrespective of any general incorporation language contained in such filing.

/s/ THOMAS BURNS
Thomas Burns
Senior Vice President, Finance and Chief Financial Officer