Quarterlytics / Healthcare / Biotechnology / Bellicum Pharmaceuticals Inc

Bellicum Pharmaceuticals Inc

blcm · NASDAQ Healthcare
Claim this profile
Ticker blcm
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Employees 51-200
← All annual reports
FY2020 Annual Report · Bellicum Pharmaceuticals Inc
Sign in to download
Loading PDF…
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

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

For the fiscal year ended December 31, 2020
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 001-36783

Bellicum Pharmaceuticals, Inc.

(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of incorporation or organization)

20-1450200
(I.R.S. Employer Identification No.)

3730 Kirby Drive, Suite 1200, Houston, TX                      77098
(Address of principal executive offices)                    (Zip code)

(832) 384-1100
(Registrant’s telephone number, including area code)

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

Title of each class
Common Stock, par value $0.01 per share

Trading Symbol(s)
BLCM

Name of each exchange on which registered
The Nasdaq Capital Market

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

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

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

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

Large accelerated filer

Non-accelerated filer

☐

☒

Accelerated filer

Smaller reporting company
Emerging growth company

☐

☒
☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised

financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over

financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☐

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

The approximate aggregate market value of the voting and non-voting common equity held by non-affiliates of the Registrant, based upon the last sale price of the

common stock as reported on The Nasdaq Capital Market as of June 30, 2020 was $31,731,375. Shares of the Registrant's common stock held by each officer and director

and by each person who owns 5% or more of the outstanding Common Stock have been excluded from such calculation in that such persons may be deemed to be affiliates.

This determination of affiliate status is not necessarily a conclusive determination for other purposes.

As of March 22, 2021, there were 8,318,273 shares of the Registrant's common stock, par value $0.01 per share, outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

 
 
Portions of the Registrant’s Definitive Proxy Statement relating to its 2021 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual

Report on Form 10-K. Such Proxy Statement will be filed with the U.S. Securities and Exchange Commission within 120 days following the Registrant’s fiscal year ended

December 31, 2020.

Table of Contents

PART I

Item 1.

Item 1A.

Item 1B.

Item 2.

Item 3.

Item 4.

PART II

Item 5.

Item 6.

Item 7.

Item 7A.

Item 8.

Item 9.

Item 9A.

Item 9B.

PART III

Item 10.

Item 11.

Item 12.

Item 13.

Item 14.

PART IV

Item 15.

Item 16.

Signatures

BELLICUM PHARMACEUTICALS, INC.
Form 10-K
For the Fiscal Year Ended December 31, 2020

TABLE OF CONTENTS

Business

Risk Factors

Unresolved Staff Comments

Properties

Legal Proceedings

Mine Safety Disclosures

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

Selected Financial Data

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Quantitative and Qualitative Disclosures About Market Risk

Financial Statements and Supplementary Data

Changes in and Disagreements With Accountants on Accounting and Financial Disclosure

Controls and Procedures

Other Information

Directors, Executive Officers and Corporate Governance

Executive Compensation

Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

Certain Relationships and Related Transactions, and Director Independence

Principal Accounting Fees and Services

Exhibits, Financial Statement Schedules

Form 10-K Summary

1

4

22

53

53

54

54

55

56

57

61

61

94

94

95

96

96

96

96

96

97

101

 
Table of Contents

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K, including the sections entitled “Business,” “Risk Factors” and “Management’s Discussion and Analysis of Financial
Condition  and  Results  of  Operations,”  may  contain  “forward-looking  statements.”  We  may,  in  some  cases,  use  words  such  as  “anticipate,”  “believe,”
“could,”  “estimate,”  “expect,”  “intend,”  “may,”  “plan,”  “potential,”  “predict,”  “project,”  “should,”  “will,”  “would”  or  the  negative  of  those  terms,  and
similar expressions that convey uncertainty of future events or outcomes to identify these forward-looking statements. Any statements contained herein that
are not statements of historical facts may be deemed to be forward-looking statements. Forward-looking statements in this Annual Report include, but are
not limited to, statements about:

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

the success, cost and timing of our product development activities and clinical trials;

our ability to advance Chemical Induction of Dimerization, or CID, CID-based technologies, including CaspaCIDe and GoCAR-T;

our  ability  to  obtain  and  maintain  regulatory  approval  of  any  of  our  product  candidates,  and  any  related  restrictions,  limitations  and/or
warnings in the label of an approved product candidate;

our ability to obtain funding for our operations, including funding necessary to complete further development and commercialization of our
product candidates;

the commercialization of our product candidates, if approved;

our plans to research, develop and commercialize our product candidates;

our ability to attract collaborators with development, regulatory and commercialization expertise and the success of any such collaborations;

future agreements with third parties in connection with the commercialization of our product candidates and any other approved product;

the size and growth potential of the markets for our product candidates, and our ability to serve those markets;

the rate and degree of market acceptance of our product candidates;

regulatory developments in the United States, or U.S., and foreign countries;

our ability to contract with third-party suppliers and manufacturers and their ability to perform adequately;

the success of competing therapies that are or may become available;

our ability to attract and retain key scientific or management personnel;

our ability to grow our organization and increase the size of our facilities to meet our anticipated growth;

the accuracy of our estimates regarding expenses, future revenue, capital requirements and needs for additional financing;

our use of cash and other resources; and

our expectations regarding our ability to obtain and maintain intellectual property protection for our product candidates.

These forward-looking statements reflect our management’s beliefs and views with respect to future events and are based on estimates and assumptions as
of the filing date of this Annual Report and are subject to risks and uncertainties. We discuss many of these risks in greater detail under the heading “Risk
Factors.” Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for our
management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may
cause actual results to differ materially from those contained in any forward-looking statements we may make. Given these uncertainties, you should not
place undue reliance on these forward-looking statements.

You should carefully read this Annual Report and the documents that we reference in this Annual Report completely and with the understanding that our
actual future results may be materially different from what we expect. We qualify all of the forward-looking statements in this Annual Report by these
cautionary statements.

Except  as  required  by  law,  we  undertake  no  obligation  to  update  these  forward-looking  statements  publicly,  or  to  update  the  reasons  that  actual  results
could differ materially from those anticipated in any forward-looking statements, whether as a result of new information, future events or otherwise.

2

Table of Contents

Except as otherwise specifically indicated, all information in this Annual Report on Form 10-K has been retroactively adjusted to give effect to a 1-for-10
reverse stock-split that was effective on February 5, 2020.

There are a number of risks related to our business and our securities. Below is a summary of material factors that make an investment in our securities
speculative or risky. Importantly, this summary does not address all of the risks that we face. Additional discussion of the risks summarized in this risk
factor summary, as we as other risks that we face, can be found in this report on Form 10-K in Item 1A entitled "Risk Factors"

Summary of Risk Factors

• We have incurred net losses from operations in every year since our inception and anticipate that we will continue to incur net losses in the future.

• We will require significant funding to complete the development and commercialization of our product candidates. If we fail to obtain additional

financing, we may have to delay, reduce or eliminate our development programs or commercialization efforts.

• Many of our current product candidates are in early stage clinical trials, and we may experience unfavorable results in the future.

• Our business could be adversely affected by the effects of health epidemics, including the recent COVID-19 outbreak, in regions where we or
third parties on which we rely have distribution centers, concentrations of suppliers and sales and marketing teams or other business operations.

•

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

• Adverse  side  effects  or  other  safety  risks  associated  with  our  product  candidates  could  delay  or  preclude  approval,  cause  us  to  suspend  or
discontinue  clinical  trials,  abandon  product  candidates,  limit  the  commercial  profile  of  an  approved  label,  or  result  in  significant  negative
consequences following marketing approval, if any.

•

The  regulatory  approval  process  is  lengthy  and  time-consuming,  and  we  may  experience  significant  delays  in  the  clinical  development  and
regulatory approval of our product candidates.

• We depend on intellectual property licensed from third parties and termination of any of these licenses could result in the loss of significant rights,

which would harm our business.

•

If our efforts to protect the proprietary nature of our technologies are not adequate, we may not be able to compete effectively in our market.

• We have limited foreign intellectual property rights and may not be able to protect our intellectual property rights throughout the world.

•

If we fail to satisfy applicable listing standards, our common stock may be delisted from the Nasdaq Capital Market.

• Our principal stockholders own a significant percentage of our stock and can exert significant control over matters subject to stockholder approval.

3

Table of Contents

ITEM 1.  Business

Overview

We are a clinical stage biopharmaceutical company focused on discovering and developing novel, controllable cellular immunotherapies for the treatment
of various forms of cancer. We are advancing CAR-T cell therapies, which are an innovative approach in which a patient’s or donor’s T cells are genetically
modified to carry chimeric antigen receptors, or CARs. We are using our proprietary Chemical Induction of Dimerization, or CID, technology platform to
engineer our product candidates with switch technologies that are designed to control components of the immune system in real time. By incorporating our
CID platform, our product candidates may offer better efficacy and safety outcomes than are seen with current cellular immunotherapies.

Cell behavior is controlled by cascades of specialized signaling proteins. CID consists of molecular switches, modified forms of these signaling proteins,
which are triggered inside the patient by infusion of a small molecule, instead of by natural upstream signals. We genetically introduce these molecular
switches  into  immune  cells  and  deliver  the  cells  to  the  patient  in  the  manner  of  conventional  cellular  immunotherapy.  We  have  developed  two  such
switches: an “activation switch,” designed to stimulate activation, proliferation and persistence of the CAR-T cells and provide other immunomodulatory
benefits, and a “safety switch,” designed to initiate programmed cell death, or apoptosis, of the CAR-T cells. Each of our product candidates incorporates
one or both switches, for enhanced, real time control of efficacy and safety:

•

The inducible MyD88/CD40 (iMC) activation switch that is incorporated into our GoCAR-T product candidates is designed to enhance CAR-T
therapies by augmenting multiple mechanisms of action, including: 1) boosting effector cell proliferation; 2) enhancing functional persistence by
resisting exhaustion and inhibitory signals found in the tumor microenvironment; and 3) stimulating the cancer patient’s own immune system to
intensify tumor killing. Unlike other CAR-T therapies that can behave unpredictably due to their autonomous activity, GoCAR-T antitumor effects
are  controlled  through  scheduled  administration  of  rimiducid.  In  the  event  of  severe  side  effects,  GoCAR-T  activity  can  be  attenuated  by
extending the interval between rimiducid doses or suspending further rimiducid administration.

• Our CaspaCIDe™ safety switch (also known as inducible Caspase-9, or iC9) is designed to be inactive unless the patient experiences a serious
side effect (e.g., CRS, neurologic toxicities or off-tumor / on-target toxicities). In that event, rimiducid or temsirolimus (depending on the design
of the product candidate) is administered to induce Caspase-9 and eliminate the cells, with the goal of attenuating the therapy and resolving the
serious side effect.

•

Some of our product candidates are “dual-switch” GoCAR-Ts that are designed to provide a user-controlled system for managing proliferation,
persistence and safety of tumor antigen-specific CAR-T cells by incorporating both our iMC and CaspaCIDe switches.

By incorporating our novel switch technologies, we are developing product candidates with the potential to elicit positive clinical outcomes and ultimately
change the treatment paradigm in various areas of cellular immunotherapy. Our most advanced programs are described below.

•

•

BPX-601  is  an  autologous  GoCAR-T  product  candidate  containing  our  proprietary  iMC  activation  switch,  designed  to  treat  solid  tumors
expressing prostate stem cell antigen, or PSCA. We believe iMC enhances T cell proliferation and persistence, enhances host immune activity, and
modulates  the  tumor  microenvironment  to  improve  the  potential  to  treat  solid  tumors  compared  to  traditional  CAR-T  therapies.  A  Phase  1/2
clinical trial, called BP-012, in patients with metastatic castration-resistant prostate cancer and metastatic pancreatic cancer expressing PSCA is
ongoing.

BPX-603 is an autologous dual-switch GoCAR-T product candidate containing both the iMC activation and CaspaCIDe safety switches. BPX-603
is  our  first  dual-switch  GoCAR-T  product  candidate  and  is  designed  to  target  solid  tumors  that  express  the  human  epidermal  growth  factor
receptor 2 antigen, or HER2. The first patient was enrolled in a Phase 1/2 trial, called BPX603-201A, in December 2020.

• Rivo-cel (rivogenlecleucel, formerly known as BPX-501), is an allogeneic T cell product candidate containing our proprietary CaspaCIDe safety
switch  that  is  intended  to  improve  outcomes  when  administered  after  hematopoietic  stem  cell  transplantation  in  the  treatment  of  hematologic
malignancies and inherited blood disorders. We are pursuing a strategic partner for rivo-cel to assume future development and commercialization
responsibilities. Concurrently, we have reduced and expect to continue to reduce our rivo-cel related activities.

4

Table of Contents

We have developed efficient and scalable processes to manufacture genetically modified T cells of high quality, which are currently being used to generate
products for our clinical trials. We are leveraging this know how in combination with our proprietary cellular control technologies, resources, capabilities
and expertise for the manufacture of CAR-T product candidates to create and develop first and best-in-class product candidates.

Cellular Immunotherapy

Cellular  immunotherapy  harnesses  immune  cells  to  attack  and  eliminate  harmful  diseased  cells  in  the  body.  The  immune  system  is  the  body’s  defense
network. It consists of a number of cells (e.g., leukocytes) and organs that, working together, recognize and respond to threats in the form of pathogens-
modified or transformed cells. T cells are a type of white blood cell that recognize pathogens and can target and eliminate them upon full activation through
the addition of appropriate co-stimulatory signals.

CAR-T  approaches  entail  collecting  a  patient’s  or  donor’s  T  cells,  genetically  modifying  them  ex  vivo,  or  outside  of  the  body,  to  incorporate  specific
receptors which target cancer cells and then infusing the modified cells into the patient. CARs are designed to target antigens on the surface of cancer cells.
In  early  human  clinical  trials,  CAR-T  cell  therapies  have  demonstrated  an  unprecedented  ability  to  achieve  complete  responses  in  some  hematological
cancers, even in patients who have suffered multiple relapses.

While high objective response rates have been reported in some hematological malignancies, CAR-T therapy has shown limited clinical efficacy in solid
tumors. This is likely due to poor proliferation and persistence of these cells and to immune suppressive factors found in the tumor microenvironment. In
addition, patients treated with CAR-T cell therapies can have serious and sometimes fatal toxicities, which can be caused by high levels of activation of the
CAR-T therapy, which can lead to severe cytokine release syndrome, or CRS, and neurologic toxicities. Furthermore, CAR-T therapies have the potential
to attack healthy tissues (i.e., “on-target/off-tumor” toxicities) which can also result in death.

Our Proprietary CID Technology Platform

Our proprietary CID technology platform is designed to address the challenges of current cellular immunotherapies. Cellular activities and functions, such
as  growth,  activation,  proliferation  and  cell  death,  are  controlled  by  signaling  cascades  following  aggregation  of  specific  proteins.  Our  CID  platform
consists of molecular switches, modified forms of these signaling proteins, which are triggered inside the patient by infusion of a small molecule, rimiducid
or temsirolimus, instead of by natural upstream signals. Our current product candidates are based on either an “activation switch”, a “safety switch,” or a
“dual  switch”  which  contains  both  activation  and  safety  switches.  After  the  small  molecule  is  administered,  the  “safety  switch”  is  designed  to  lead  to
apoptosis, and the “activation switch” is designed to lead to proliferation, activation and enhanced persistence of immune cells.

We incorporate the molecular switches in the appropriate immune cells through genetic manipulation and administer them to the patient. After the gene-
modified  immune  cells  are  inside  the  patient’s  body,  specific  functions  of  these  cells  may  be  controlled  by  administration  of  small  molecule  ligands
(rimiducid or temsirolimus). The CID switch proteins have been designed to specifically bind to rimiducid or temsirolimus. Once introduced, these ligands
couple, or aggregate, CID switch proteins together to create a cluster that triggers the signaling cascade. Aside from its impact on CID-modified immune
cells bearing switch proteins, rimiducid is bioinert and has no other known effect on the body. In dual-switch applications, temsirolimus can be used to
activate a safety switch, if severe, treatment-related toxicities occur. Temsirolimus is a kinase inhibitor approved for the treatment of advanced renal cell
carcinoma that has a well-characterized safety profile.

Our  proprietary  CID-based  product  candidates  depend  on  the  following  signaling  molecules  to  trigger  signaling  cascades,  resulting  in  different  cell
activities:

a.

iMC:  Signaling  Molecules  for  Activation  and  Proliferation.  iMC  is  also  known  as  inducible  MyD88  and  CD40.  Myeloid differentiation
primary response 88, or MyD88, is a protein that has functions in cellular responses to stimuli such as stress, cytokines and bacteria or viruses.
CD40 is a co-stimulatory protein found on antigen-presenting cells, such as dendritic cells and B cells and is required for their full activation.
Activation  of  iMC  in  immune  cells,  such  as  T  lymphocytes,  provides  inducible  co-stimulation,  leading  to  enhanced  cell  proliferation  and
survival.  In  addition,  activation  of  iMC  causes  immune  cells  to  secrete  pro-inflammatory  cytokines  and  chemokines,  and  to  express  co-
stimulatory cell surface molecules to potentially modulate the tumor microenvironment and stimulate the patient’s own immune system.

Our GoCAR-T technology incorporates our proprietary iMC activation switch that activates CAR-T cells when triggered by both rimiducid
and the targeted antigen expressed on the surface of the cancer cells. Current generation CAR-T constructs consist of a CD3 domain and one or
more  co-stimulatory  molecules  that  are  both  activated  when  the  CAR-T  binds  to  the  cancer  antigen,  and  therefore,  function  autonomously
following infusion. This reliance on an

5

Table of Contents

antigen for activation of the CAR-T cell results in an unpredictable and inherently uncontrollable therapeutic effect. Solid tumor CAR cells, on
the other hand, often fail to proliferate or persist at all for more than a few days or weeks and have been largely ineffective. In each situation,
the physician has no effective way to intervene to achieve greater consistency once the cells have been administered.

Our GoCAR-T technology is designed to change the current paradigm by placing our proprietary co-activation domain, MC, under rimiducid
control.  GoCAR-T  cells  are  designed  to  only  be  fully  activated  when  exposed  to  both  the  cancer  cells  expressing  the  target  antigen  and
rimiducid. This separation is designed to control the degree of activation of the CAR-T cells through adjustments to the schedule of rimiducid
dosing.

b. CaspaCIDe: Signaling Molecule for Apoptosis. CaspaCIDe is also known as inducible Caspase-9. Caspase-9 is the initiating enzyme in the
apoptosis pathway. When activated, the dimerization of CaspaCIDe leads to rapid apoptosis of gene-modified T cells. Because CaspaCIDe is
designed to be permanently integrated into our cellular therapies, the safety switch has the potential to be available for use long after the initial
therapy is delivered. Moreover, preclinical animal studies demonstrate the ability to modulate the elimination of cells containing CaspaCIDe by
different rimiducid doses and schedules (i.e., titrated elimination).

CaspaCIDe  has  been  incorporated  into  several  clinical  programs.  At  the  American  Society  of  Hematology  Annual  Meeting  in  2018,  we
presented data on the administration of rimiducid to trigger CaspaCIDe in 24 patients experiencing graft versus host disease (GvHD) refractory
to  standard  treatments  after  receiving  rivo-cel  following  stem  cell  transplantation.  The  best  overall  GvHD  clinical  response  after  rimiducid
administration was 70%, with a median time to response of one day.

On  March  4,  2021,  we  announced  the  first  reported  case  of  the  use  of  CaspaCIDe  to  mitigate  a  severe  CAR  T-mediated  adverse  event
refractory to standard of care treatment. The case report was published ahead-of-print in the digital edition of Blood, a journal published by the
American  Society  of  Hematology,  detailing  a  case  from  an  investigator  sponsored  trial  at  the  University  of  North  Carolina  Lineberger
Comprehensive Cancer Center of a CD19 CAR-T containing CaspaCIDe. A patient in the study experienced grade 3-4 immune effector cell-
associated neurotoxicity syndrome (ICANS) for 72 hours despite standard care. Within 12 hours of rimiducid administration, ICANS grade
improved from 3 to 1 and was fully resolved after four days.

Our Active Product Candidates

BPX-601: GoCAR-T for PSCA+ Solid Tumors

We are developing BPX-601, an autologous GoCAR-T product candidate containing our proprietary iMC activation switch, designed to treat solid tumors
expressing prostate stem cell antigen, or PSCA. PSCA is an antigen expressed in several solid tumor indications, including prostate and pancreatic cancer.
Pre-clinical data show iMC enhances T cell proliferation and persistence, enhances host immune activity, and modulates the tumor microenvironment to
improve the potential to treat solid tumors compared to traditional CAR-T therapies. A Phase 1/2 clinical trial, called BP-012, in patients with metastatic
castration-resistance prostate and pancreatic cancer expressing PSCA is ongoing.

BPX-603: Dual-Switch GoCAR-T for HER2+ Solid Tumors

We are developing BPX-603, which is our first controllable dual-switch autologous GoCAR-T product candidate and incorporates both the iMC activation
switch and the CaspaCIDe safety switch. BPX-603 is designed to target solid tumors that express the human epidermal growth factor receptor 2 antigen, or
HER2.  HER2  is  a  validated  antigen  for  cancer  therapies,  and  academic  HER2  CAR-T  cell  clinical  studies  have  shown  evidence  of  anti-tumor  activity.
These academic HER2 CAR-T approaches targeting HER2 have been limited by modest clinical efficacy and off-tumor/on-target toxicity. We believe that
our dual-switch GoCAR-T technology may be uniquely suited to improve upon these earlier efforts, by driving greater efficacy through iMC activation
while enabling clinicians to manage any treatment-emergent toxicities with CaspaCIDe. A Phase 1/2 clinical trial, called BPX603-201A, in patients with
metastatic HER2+ solid tumors is ongoing.

Manufacturing, Processing and Delivering to Patients

We have developed efficient and scalable processes to manufacture genetically modified T cells of high quality. We are leveraging the processes we have
developed for BPX-601 in combination with our proprietary cellular control technologies, resources, capabilities and expertise for the manufacture of our
product candidates to create and develop first and best-in-class product candidates.

6

Table of Contents

Our product candidates require a combination of three critical components: (1) viral vectors with DNA content encoded for our proprietary switch proteins
and co-stimulatory and other accessory molecules, (2) patient or healthy donor-derived T cells that are genetically modified by our viral vectors, and (3) the
small molecules rimiducid and/or temsirolimus, which activate the switch proteins. Each of these components requires a separate supply chain and shares
the same regulatory requirements applicable for biological or chemical materials suitable for human use. Details on each of these components are described
below:

a.

b.

c.

Viral Vectors. We use gamma retrovirus to transduce our product candidates. We believe that gamma retrovirus is optimal for cell transduction
given that it is an integrating vector that induces long-term gene expression, exhibits high transduction efficiency, has sufficient capacity for
DNA content, and has been extensively and safely used in clinical trials.

Genetically Modified Cells. We have designed and refined a proprietary process for cell engineering that has been improved from lab-based
open procedures used in academic and research settings to a functionally closed system that is more appropriate for large-scale clinical trials
and commercialization. Our systems are designed to be compliant with current guidelines and regulations for cell-based manufacturing in the
U.S. and Europe and have been successfully implemented by our third-party manufacturers.

Small Molecules. Rimiducid is a synthetic small molecule that has been rationally designed to trigger the proprietary switch proteins in our
CID  platform.  We  have  separate  third-party  manufacturers  for  the  active  pharmaceutical  ingredient,  or  API,  and  the  finished  drug  product.
Manufacturers of both the API and finished drug product are licensed to manufacture a variety of marketed drugs worldwide and have been
selected based on their ability to provide supplies for our clinical trials and future commercialization. In our dual-switch constructs, the small
molecule  temsirolimus  can  be  used  to  trigger  one  of  the  two  switches.  Temsirolimus  is  an  approved  and  commercially  available  product
manufactured and distributed by Pfizer Inc. under the trade name TORISEL.

We are focused on continuously refining our overall cell therapy supply chain, manufacturing, processing and delivery to patients to be more efficient. Our
current process cycles for our autologous product candidates, from collection of white blood cells to infusion of the final product, can be completed in as
little as four weeks and are customized to be complementary to the treatment procedure of interest in order to prevent delays or complications.

Intellectual Property

We  seek  to  protect  proprietary  technology,  inventions,  and  improvements  that  are  commercially  important  to  our  business  by  seeking,  maintaining,  and
defending patent rights, whether developed internally or licensed from third parties. We also seek to rely on regulatory protection afforded through orphan
drug designations, data exclusivity, market exclusivity and patent term extensions where available as well as contractual agreements with our academic and
commercial partners.

A strategic focus for us has been to identify and license key patents and patent applications that serve to enhance our intellectual property and technology
position. Our intellectual property estate includes: (1) claims directed to core CID technologies and components used in our products; (2) claims directed to
methods of treatment for therapeutic indications; (3) claims directed to specific products; and (4) claims directed to innovative methods for generating new
constructs for genetically engineering T cells. We believe our patent estate, together with our efforts to develop and patent next generation technologies,
provides us with a substantial intellectual property position.

As of December 31, 2020, to our knowledge, our patent estate, on a worldwide basis, includes 179 issued patents, 22 of which are in the U.S., and 78
pending patent applications, 22 of which are in the U.S., which we own or for which we have an exclusive, either in its entirety or within our field of use,
commercial license. The provisional and pending patent applications and issued patents include composition of matter and method of use claims.

▪ We  have  internally  developed  technology  disclosed  in  six  pending  utility  patent  applications  in  the  U.S.,  one  European  granted  patent
validated in eight countries, 22 pending foreign patent applications, and one pending PCT application which that relate to our GoCAR-T
technology. If U.S. patents issue from the U.S. applications, the estimated expiration date of the last to expire patent is in 2038. If patents are
issued in foreign jurisdictions, the anticipated expiration dates will be in 2038.

▪

Pursuant to our licenses from Baylor and Ariad, we have exclusive commercial rights to 11 issued U.S. patents expiring in 2024 or later, six
pending  U.S.  utility  patent  applications,  two  European  granted  patents  (the  first  validated  in  three  countries,  the  second  validated  in  five
countries), four issued foreign patents expiring in 2024 or later and three pending patent applications in foreign jurisdictions that relate to
our GoCAR-T, rivo-cel and certain of our other technologies. If U.S. patents issue from the currently pending U.S. patent applications, the
estimated

7

Table of Contents

expiration  date  of  the  last  to  expire  patent  is  2031.  If  patents  from  the  currently  pending  patent  applications  are  issued  in  foreign
jurisdictions, the estimated expiration dates range from 2024 to 2029.

▪

Pursuant  to  our  license  agreement  with  Agensys  we  have  exclusive  commercial  rights  for  technology  to  target  certain  cancer-specific
antigens.

The term of individual patents depends upon the legal term of the patents in the countries in which they are obtained. In most countries in which we file,
the patent term is 20 years from the date of filing of the first non-provisional application to which priority is claimed. In the U.S., a patent’s term may be
lengthened by patent term adjustment, which compensates a patentee for administrative delays by the U.S. Patent and Trademark Office, or the USPTO, in
granting a patent, or may be shortened if a patent is terminally disclaimed over an earlier-filed patent. The term of a patent that covers an FDA-approved
drug or biologic may also be eligible for a patent term restoration of up to five years under the Hatch-Waxman Act, which is designed to compensate for the
patent term lost during the FDA regulatory review process. The length of the patent term restoration is calculated based on the length of time the drug or
biologic is under regulatory review. A patent term restoration under the Hatch-Waxman Act cannot extend the remaining term of a patent beyond a total of
14 years from the date of product approval and only one patent applicable to an approved drug or biologic may be restored. Moreover, a patent can only be
restored once, and thus, if a single patent is applicable to multiple products, it can only be extended based on one product. Similar provisions are available
in Europe and certain other foreign jurisdictions to extend the term of a patent that covers an approved drug or biologic. When possible, depending upon
the  length  of  clinical  trials  and  other  factors  involved  in  the  filing  of  a  Biologics  License  Application,  or  BLA,  we  expect  to  apply  for  patent  term
extensions for patents covering our product candidates and their methods of use.

We may rely, in some circumstances, on trade secrets to protect our technology. We seek to protect our proprietary technology and processes, in part, by
entering  into  confidentiality  agreements  with  our  employees,  consultants,  scientific  advisors  and  contractors.  We  also  seek  to  preserve  the  integrity  and
confidentiality  of  our  data  and  trade  secrets  by  maintaining  physical  security  of  our  premises  and  physical  and  electronic  security  of  our  information
technology systems. While we have confidence in these individuals, organizations and systems, agreements or security measures may be breached, and we
may  not  have  adequate  remedies  for  any  breach.  In  addition,  our  trade  secrets  may  otherwise  become  known  or  be  independently  discovered  by
competitors. To the extent that our consultants, contractors or collaborators use intellectual property owned by others in their work for us, disputes may
arise as to the rights in related or resulting know-how and inventions.

Our Collaboration and License Agreements

Co-Development and Co-Commercialization Agreement - Adaptimmune

In December 2016, we and Adaptimmune Therapeutics plc, or Adaptimmune entered into a Co-Development and Co-Commercialization Agreement, or the
Adaptimmune Agreement, in order to facilitate a staged collaboration to evaluate, develop and commercialize next generation T cell therapies.

Under the Adaptimmune Agreement, the parties agreed to evaluate our GoTCR technology, iMC co-stimulation, with Adaptimmune's affinity-optimized
SPEAR®  T  cells  for  the  potential  to  create  enhanced  TCR  product  candidates.  Depending  on  results  of  the  preclinical  proof-of-concept  phase,  the
agreement may progress to a two-target co-development and co-commercialization phase. To the extent necessary, and in furtherance of the parties’ proof-
of-concept  and  co-development  efforts,  the  parties  granted  each  other  a  royalty-free,  non-transferable,  non-exclusive  license  covering  their  respective
technologies  for  purposes  of  facilitating  such  proof-of-concept  and  co-development  efforts.  In  addition,  as  to  covered  therapies  developed  under  the
Adaptimmune Agreement, the parties granted each other a reciprocal exclusive license for the commercialization of such therapies.

With respect to any joint commercialization of a covered therapy, the parties agreed to negotiate in good faith the commercially reasonable terms of a co-
commercialization agreement. The parties also agreed that any such agreement shall provide for, among other things, equal sharing of the costs of any such
joint commercialization and the calculation of profit shares as set forth in the Adaptimmune Agreement.

The Adaptimmune Agreement will expire on a country-by-country basis once the parties cease commercialization of the T cell therapies covered by the
Adaptimmune  Agreement,  unless  earlier 
terminated  by  either  party  for  material  breach,  non-performance  or  cessation  of  development,
bankruptcy/insolvency, or failure to progress to co-development phase.

License Agreement - Agensys

In December 2015, we and Agensys, Inc. or Agensys entered into a license agreement, or the Agensys Agreement, pursuant to which (i) Agensys granted
us, within the field of cell and gene therapy of diseases in humans, an exclusive, worldwide license and

8

Table of Contents

sublicense  to  its  patent  rights  directed  to  PSCA  and  related  antibodies,  and  (ii)  we  granted  Agensys  a  non-exclusive,  fully  paid  license  to  our  patents
directed to inventions that were made by us in the course of developing our licensed products, solely for use with Agensys therapeutic products containing
a soluble antibody that binds to PSCA or, to the extent not based upon our other proprietary technology, to non-therapeutic applications of antibodies not
used within the field.

As consideration for the rights granted to us under the Agensys Agreement, we agreed to pay to Agensys a non-refundable upfront fee of $3.0 million. We
are  also  required  to  make  aggregate  milestone  payments  to  Agensys  of  up  to  (i)  $5.0  million  upon  the  first  achievement  of  certain  specified  clinical
milestones  for  its  licensed  products,  (ii)  $50.0  million  upon  the  achievement  of  certain  specified  clinical  milestones  for  each  licensed  product,  and
(iii) $75.0 million upon the achievement of certain sales milestones for each licensed product. The Agensys Agreement additionally provides that we will
pay to Agensys a royalty percentage that ranges from the mid to high single digits based on the level of annual net sales of licensed products by us, our
affiliates or permitted sublicensees. The royalty payments are subject to reduction under specified circumstances.

Under  the  Agensys  Agreement,  Agensys  also  was  granted  the  option  to  obtain  an  exclusive  license,  on  a  product-by-product  basis,  from  us  to
commercialize in Japan each licensed product developed under the Agensys Agreement that has completed a phase 2 clinical trial. As to each such licensed
product, if Agensys or its affiliate, Astellas Pharma, Inc., exercises the option, the Agensys Agreement provides that we will be paid an option exercise fee
of $5.0 million. In addition, the Agensys Agreement provides that we will be paid a royalty that ranges from the mid to high single digits based on the level
of annual net sales in Japan of each such licensed product. If the option is exercised, the aggregate milestone payments payable by us to Agensys, described
above with respect to each licensed product, would be reduced by up to an aggregate of $65.0 million upon the achievement of certain specified clinical
and sales milestones.

The Agensys Agreement will terminate upon the expiration of the last royalty term for the products covered by the Agensys Agreement, which is the earlier
of  (i)  the  date  of  expiration  or  abandonment  of  the  last  valid  claim  within  the  licensed  patent  rights  covering  any  licensed  products  under  the  Agensys
Agreement, (ii) the expiration of regulatory exclusivity as to a licensed product, and (iii) 10 years after the first commercial sale of a licensed product.
Either party may terminate the Agensys Agreement upon a material breach by the other party that remains uncured following 60 days after the date of
written notice of such breach (or 30 days if such material breach is related to failure to make payment of amounts due under the Agensys Agreement) or
upon certain insolvency events. In addition, Agensys may terminate the Agensys Agreement immediately upon written notice to us if we or any of our
affiliates or permitted sublicensees commence an interference proceeding or challenge the validity or enforceability of any of Agensys’ patent rights.

License Agreement - BioVec

In June 2015, we and BioVec Pharma, Inc., or BioVec, entered into a license agreement, or the BioVec Agreement, pursuant to which BioVec agreed to
supply us with certain proprietary cell lines and granted us a non-exclusive, worldwide license to certain of its patent rights and related know-how related
to such proprietary cell lines.

As consideration for the products supplied and rights granted to us under the BioVec Agreement, we agreed to pay to BioVec an upfront fee of $100,000
within ten business days of the effective date of the BioVec Agreement and a fee of $300,000 within ten business days of its receipt of the first release of
GMP lot of the products licensed under the BioVec Agreement. In addition, we agreed to pay to BioVec an annual fee of $150,000, commencing 30 days
following  the  first  filing  of  an  IND,  or  its  foreign  equivalent,  for  a  product  covered  by  the  license;  with  such  annual  fees  being  creditable  against  any
royalties payable by us to BioVec under the BioVec Agreement. We also are required to make a $250,000 milestone payment to BioVec for each of the first
three licensed products to enter into a clinical phase trial and one-time milestone payments of $2.0 million upon receipt of a registration granted by the
FDA or EMA on each of our first three licensed products. The BioVec Agreement additionally provides that we will pay to BioVec a royalty in the low
single digits on net sales of products covered by the BioVec Agreement. We may also grant sub licenses under the licensed patent rights and know-how to
third  parties  for  limited  purposes  related  to  the  use,  sale  and  other  exploitation  of  the  products  licensed  under  the  BioVec  Agreement.  The  BioVec
Agreement will continue until terminated. The BioVec Agreement may be terminated by us, in our sole discretion, at any time upon 90 days written notice
to BioVec. Either party may terminate the BioVec Agreement in the event of a breach by the other party of any material provision of the BioVec Agreement
that remains uncured on the date that is 60 days after written notice of such failure or upon certain insolvency events that remain uncured following the date
that is 30 days after the date of written notice to a party regarding such insolvency event.

License Agreements - Baylor College of Medicine

2008 Baylor License Agreement

Pursuant to an Exclusive License Agreement with Baylor College of Medicine, or Baylor, dated March 20, 2008, or the 2008 Baylor license agreement, we
obtained an exclusive, worldwide and fully paid up license to certain intellectual property, including

9

Table of Contents

intellectual property related to methods for activating antigen presenting cells and to genetic constructs coding for membrane bound inducible cytoplasmic
CD40.

As consideration for the 2008 Baylor license agreement, we issued to Baylor 23,529 shares of our common stock and assumed responsibility for all legal
fees  and  expenses,  filing  or  maintenance  fees,  assessments  and  all  other  costs  and  expenses  related  to  prosecuting,  obtaining  and  maintaining  patent
protection on the patents subject to the 2008 Baylor license agreement.

The 2008 Baylor license agreement is subject to certain restrictions and is nonexclusive with respect to (1) the making or use of the licensed intellectual
property for use in non-commercial research, patient care, teaching, and other educational purposes; (2) any non-exclusive license covering the licensed
intellectual property that Baylor grants to other academic or research institutions for noncommercial research purposes; (3) any non-exclusive licenses that
Baylor is required to grant to the U.S. or foreign state pursuant to an existing or future treaty with the U.S.; and (4) a non-exclusive license granted to
ARIAD Pharmaceuticals, Inc. or ARIAD under the terms of a materials transfer agreement between Baylor and ARIAD.

Baylor may terminate or modify the 2008 Baylor license agreement in the event of a material breach by us that remains uncured following the date that is
90 days after written notice of such breach or upon certain insolvency events that remain uncured following the date that is 30 days following written notice
of such insolvency event. We may terminate the 2008 Baylor license agreement, or any portion thereof, at our sole discretion at any time upon 30 days’
written notice to Baylor. Upon termination of the 2008 Baylor license agreement, all rights to the intellectual property immediately revert to Baylor.

2010 Baylor License Agreement

Pursuant to an Exclusive License Agreement with Baylor, dated June 27, 2010, or the 2010 Baylor license agreement, we obtained an exclusive, worldwide
license to certain intellectual property, including intellectual property related to methods for treating prostate cancer, methods of administering T cells to a
patient, and methods of activating antigen presenting cells with constructs comprising MyD88 and CD40.

Pursuant to the terms of the 2010 Baylor license agreement we are required to pay a low annual maintenance fee on each anniversary of the agreement date.

The terms of the 2010 Baylor license agreement also require us to make royalty payments of less than one percent, subject to certain annual minimums, on
net sales of products covered by the license. In addition, to the extent we enter into a sublicensing agreement relating to a licensed product, we are required
to pay Baylor a percentage in the mid-single digits on all non-royalty income received from sublicensing revenue. Bellicum is required to make milestone
payments, of up to $735,000 in aggregate, upon successful completion of clinical and regulatory milestones regarding the first two products covered by this
license.

The 2010 Baylor license agreement will expire upon expiration of the last patent contained in the licensed patent rights, on a country-by-country basis,
upon which we will have a perpetual, paid-in-full license in such country. Baylor may terminate or modify the 2010 Baylor license agreement in the event
of a material breach by us that remains uncured following the date that is 90 days after written notice of such breach or upon certain insolvency events that
remain uncured following the date that is 30 days following written notice of such insolvency event. We may terminate the 2010 Baylor license agreement,
or any portion thereof, at our sole discretion at any time upon 60 days’ written notice to Baylor. Upon termination of the 2010 Baylor license agreement for
any reason prior to expiration, we must assign to Baylor each authorized sublicense agreement that is currently in effect on the date of termination.

2014 Baylor License Agreement

Pursuant to an Exclusive License Agreement with Baylor, effective November 1, 2014, or the 2014 Baylor license agreement, we obtained an exclusive,
worldwide license to certain intellectual property, including intellectual property related to methods for inducing selective apoptosis.

Pursuant  to  the  terms  of  the  2014  Baylor  license  agreement  we  are  required  to  pay  Baylor  a  low  annual  maintenance  fee  on  each  anniversary  of  the
agreement date. The terms of the 2014 Baylor license agreement also require us to make royalty payments in the low single digits, subject to certain annual
minimums, on net sales of products covered by the license. To the extent we enter into a sublicensing agreement relating to a licensed product, Bellicum is
also required to pay Baylor a percentage in the low double-digits on all non-royalty income received from sublicensing revenue. We are required to make
milestone payments, of up to $275,000 in aggregate, upon successful completion of clinical and regulatory milestones regarding the first product covered
by this license. The 2014 Baylor license agreement will expire upon expiration of the last patent contained in the licensed patent rights, on a country-by-
country basis, upon which we will have a perpetual, paid-in-full license in each such country.

10

Table of Contents

Baylor may terminate or modify the 2014 Baylor license agreement in the event of a material breach by us that remains uncured following the date that is
90 days after written notice of such breach or upon certain insolvency events that remain uncured following the date that is 30 days following written notice
of such insolvency event. We may terminate the 2014 Baylor license agreement, or any portion thereof, at our sole discretion at any time upon 60 days’
written notice to Baylor.

2016 Baylor License Agreements

In March 2016, we and Baylor entered into two additional license agreements pursuant to which we obtained exclusive rights to technologies and patent
rights owned by Baylor. We could incur additional payments upon the achievement of certain milestone events as set forth in the agreements. If we are
successful in developing any of the licensed technologies under either agreement, resulting sales would be subject to a royalty payment in the low single
digits.

Grant Agreements

Grant Agreements with Cancer Prevention and Research Institute of Texas

In July 2011, we entered into a Cancer Research Grant Contract, or the First Grant Contract, with the Cancer Prevention and Research Institute of Texas, or
CPRIT, under which CPRIT awarded a grant not to exceed approximately $5.7 million to be used for the execution of defined clinical development of rivo-
cel. To date, we have received approximately $4.9 million under the grant. The First Grant Contract terminated on June 30, 2014, but obligations exist as to
licensing, royalty payments, and indemnification provisions.

In November 2016, we announced that the Company received notice of a product development award totaling approximately $16.9 million from CPRIT.
The CPRIT award was expected to fund a portion of a three-year global clinical program comprising clinical trials for adult and pediatric patients with
high-risk and intermediate-risk AML, and potentially other hematologic cancers. The proposed studies are designed to evaluate the benefit of rivo-cel and
rimiducid in the context of in vivo and ex vivo T cell depleted haploidentical HSCT. The CPRIT oversight committee met in February 2017 and agreed to
move  forward  with  the  proposed  terms  of  the  grant  agreement,  and  a  second  grant,  or  the  Second  Grant  Contract  was  entered  into  in  August  2017.
Additionally, the First Grant Contract was amended in order to align revenue sharing terms, discussed below, with the Second Grant Contract. We initiated
a pivotal randomized Phase 2/3 clinical trial (THRIVE) supported in part by the CPRIT funding.

In January 2020, we terminated the Second Grant Contract based on our decision to cease enrollment of the THRIVE trial. A total of approximately $3.3
million in grant funds was received and used for the project. No additional funds will be disbursed under this grant, but the revenue share and other post-
grant obligations described below survive the termination.

Pursuant to the terms of each of the Grant Contracts, we grant to CPRIT a non-exclusive, irrevocable, royalty-free, perpetual, worldwide license to any
technology and intellectual property resulting from the grant-funded activities and any other intellectual property that is owned by us and necessary for the
exploitation of the technology and intellectual property resulting from the grant-funded activities, or the Project Results, for and on behalf of CPRIT and
other governmental entities and agencies of the State of Texas and private or independent institutions of higher education located in Texas for education,
research and other non-commercial purposes only. The terms of each of the Grant Contracts require that we pay tiered royalties in the low- to mid-single
digit  percentages  on  revenues  from  sales  and  licenses  of  products  or  services  that  are  based  upon,  utilize,  are  developed  from  or  materially  incorporate
Project Results. Such royalties reduce to less than one percent after a mid-single-digit multiple of the grant funds have been repaid to CPRIT in royalties.
Such royalties are payable for so long as we have marketing exclusivity or patents covering the applicable product or service (or twelve years from first
commercial sale of such product or service in certain countries if there is no such exclusivity or patent protection).

If  we  abandon  patent  applications  or  patents  covering  Project  Results  in  certain  major  market  countries,  CPRIT  can,  at  its  own  cost,  take  over  the
prosecution and maintenance of such patents and is granted a non-exclusive, irrevocable, royalty-free, perpetual license with right to sublicense in such
country to the applicable Project Results. We are required to use diligent and commercially reasonable efforts to commercialize at least one commercial
product or service or otherwise bring to practical application the Project Results. If CPRIT notifies us of our failure with respect to the foregoing, and such
failure is not owing to material safety concerns, then, at CPRIT’s option, the applicable Project Results would be transferred to CPRIT and CPRIT would
be  granted  a  non-exclusive  license  to  any  other  intellectual  property  that  is  owned  by  us  and  necessary  for  the  exploitation  of  the  Project  Results,  and
CPRIT, at its own cost, can commercialize products or services that are based upon, utilize, are developed from or materially incorporate Project Results.
CPRIT’s option is subject to our ability to cure any failures identified by CPRIT within 60 days and a requirement to negotiate in good faith with us with
respect to an alternative commercialization strategy for a period of 180 days.

11

Table of Contents

Competition

The biopharmaceutical industry is characterized by intense and dynamic competition to develop new technologies and proprietary therapies. Any product
candidates that we successfully develop and commercialize will have to compete with existing therapies and new therapies that may become available in
the  future.  While  we  believe  that  our  proprietary  CID  platform,  differentiated  product  candidates  and  scientific  expertise  in  the  field  of  cellular
immunotherapy  provide  us  with  competitive  advantages,  we  face  potential  competition  from  various  sources,  including  larger  and  better-funded
pharmaceutical,  specialty  pharmaceutical  and  biotechnology  companies,  as  well  as  from  academic  institutions,  governmental  agencies  and  public  and
private research institutions.

Cell based treatments for cancer, such as CAR-T therapies, have recently been an area of significant research and development by academic institutions and
biopharmaceutical companies. Our product candidates may compete with product candidates from a number of companies that are currently focused on this
therapeutic modality, including Adaptimmune, Allogene Therapeutics, Inc., Amgen Inc., Atara Biotherapeutics, Inc., Autolus Therapeutics plc, bluebird
bio,  Inc.,  Bristol-Meyer  Squibb  Co.,  Cellectis  SA,  Celyad  S.A.,  Fate  Therapeutics  Inc.,  GlaxoSmithKline  plc,  Gilead  Sciences,  Inc.,  Iovance
Biotherapeutics, Inc., Janssen Pharmaceutical, Kuur Therapeutics, Legend Biotech, Lyell Immunopharma, Inc., Medigene AG, MolMed S.p.A., Mustang
Bio,  Inc.,  Novartis  AG,  Obsidian  Therapeutics,  Poseida  Therapeutics,  Precigen  Inc.,  Precision  Biosciences,  Inc.,  Sorrento  Therapeutics,  Inc.,  Takeda
Pharmaceutical Co, and Ziopharm Oncology.

Many of our competitors, either alone or with their strategic partners, have substantially greater financial, technical and human resources than we do and
significantly greater experience in the discovery and development of product candidates, obtaining FDA and other regulatory approvals of treatments and
commercializing  those  treatments.  Accordingly,  our  competitors  may  be  more  successful  than  us  in  obtaining  approval  for  treatments  and  achieving
widespread  market  acceptance.  Our  competitors’  treatments  may  be  more  effective,  or  more  effectively  marketed  and  sold,  than  any  treatment  we  may
commercialize and may render our treatments obsolete or non-competitive before we can recover the expenses of developing and commercializing any of
our treatments.

Mergers  and  acquisitions  in  the  biotechnology  and  pharmaceutical  industries  may  result  in  even  more  resources  being  concentrated  among  a  smaller
number  of  our  competitors.  These  competitors  also  compete  with  us  in  recruiting  and  retaining  qualified  scientific  and  management  personnel  and
establishing clinical study sites and subject registration for clinical studies, as well as in acquiring technologies complementary to, or necessary for, our
programs. Smaller or early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large and
established companies.

We anticipate that we will face intense and increasing competition as new drugs enter the market and advanced technologies become available. We expect
any  treatments  that  we  develop  and  commercialize  to  compete  on  the  basis  of,  among  other  things,  efficacy,  safety,  convenience  of  administration  and
delivery, price, the level of generic competition and the availability of reimbursement from government and other third-party payers. For example, if a third
party is able to obtain a stand-alone new drug application for rimiducid, then potential generic manufacturers may be able to file abbreviated new drug
applications for that product.

Our commercial opportunity could be reduced or eliminated if our competitors develop and commercialize products that are safer, more effective, have
fewer or less severe side effects, are more convenient or are less expensive than any products that we may develop. Our competitors also may obtain FDA
or other regulatory approval for their products more rapidly than we may obtain approval for ours, which could result in our competitors establishing a
strong  market  position  before  we  are  able  to  enter  the  market.  In  addition,  we  expect  that  our  therapeutic  products,  if  approved,  will  be  priced  at  a
significant premium over competitive generic products and our ability to compete may be affected in many cases by insurers or other third-party payers
seeking to encourage the use of generic products.

Government Regulation and Product Approval

As a biopharmaceutical company that operates in the U.S., we are subject to extensive regulation. Our cell products will be regulated as biologics. With this
classification,  commercial  production  of  our  products  will  need  to  occur  in  registered  and  licensed  facilities  in  compliance  with  the  current  good
manufacturing practice, or cGMP, for biologics.

The FDA regulates human cells, tissues, and cellular and tissue-based products, or HCT/Ps, under a two-tiered framework, based on risk categorization.
Higher-risk HCT/Ps are regulated as biologics. For example, such products must complete extensive clinical trials, which must be conducted pursuant to an
effective IND. The FDA must review and approve a Biologics License Application, or BLA before a new biologic may be marketed.

12

Table of Contents

The  FDA  considers  our  investigational  products  to  be  “combination  products”  because  our  products  involve  a  biologic,  the  engineered  cells,  that  is
intended to be used with a small molecule chemical drug, rimiducid. In general, biologics such as our engineered cells are regulated through the FDA’s
Center for Biologics Evaluation and Research, or CBER, while synthetic drugs are regulated through the FDA’s Center for Drug Evaluation and Research.
When the FDA encounters a combination product such as our products, the agency determines which of the two centers will have primary responsibility for
regulating  the  product  by  determining  the  primary  mode  of  action  for  the  product.  The  cellular  component  of  our  combination  contributes  the  primary
mode of action and, as a result, the FDA will regulate our investigational products as biologics, through CBER.

Government  authorities  in  the  U.S.,  at  the  federal,  state  and  local  levels,  and  in  other  countries  extensively  regulate,  among  other  things,  the  research,
development,  testing,  manufacturing,  quality  control,  approval,  labeling,  packaging,  storage,  record-keeping,  promotion,  advertising,  distribution,  post-
approval  monitoring  and  reporting,  marketing  and  export  and  import  of  biopharmaceutical  products  such  as  those  we  are  developing.  Our  product
candidates must be approved by the FDA before they may be legally marketed in the U.S. and by the appropriate foreign regulatory agency before they
may be legally marketed in foreign countries. Generally, our activities in other countries will be subject to regulation that is similar in nature and scope as
that imposed in the U.S., although there can be important differences. Additionally, some significant aspects of regulation in Europe are addressed in a
centralized way, but country-specific regulation remains essential in many respects.

U.S. Product Development Process

In the U.S., the FDA regulates new drugs and biological products under the Federal Food, Drug and Cosmetic Act, or FDCA, the Public Health Service
Act,  or  PHSA,  and  implementing  regulations.  Products  are  also  subject  to  other  federal,  state  and  local  statutes  and  regulations.  The  FDA  has  limited
experience with commercial development of T cell therapies for cancer. The process required by the FDA before a biological product may be marketed in
the U.S. generally involves the following:

a.

b.

c.

d.

e.

f.

g.

completion of nonclinical laboratory tests and animal studies according to good laboratory practices, or GLPs, and applicable requirements for
the humane use of laboratory animals or other applicable regulations;

submission to the FDA of an IND, which must become effective before human clinical trials may begin;

performance of adequate and well-controlled human clinical trials according to the FDA’s regulations commonly referred to as good clinical
practices, or GCPs, and any additional requirements for the protection of human research patients and their health information, to establish the
safety and efficacy of the proposed biological product for its intended use;

submission  to  the  FDA  of  a  BLA  for  marketing  approval  that  includes  substantial  evidence  of  safety,  purity,  and  potency  from  results  of
nonclinical testing and clinical trials;

satisfactory  completion  of  an  FDA  inspection  of  the  manufacturing  facility  or  facilities  where  the  biological  product  is  produced  to  assess
compliance with cGMP, to assure that the facilities, methods and controls are adequate to preserve the biological product’s identity, strength,
quality and purity and, if applicable, the FDA’s current good tissue practices, or GTPs, for the use of HCT/Ps;

potential FDA audit of the nonclinical study and clinical trial sites that generated the data in support of the BLA; and

FDA review and approval, or licensure, of the BLA.

Before  testing  any  biological  product  candidate,  including  our  product  candidates,  in  humans,  the  product  candidate  enters  the  preclinical  testing  stage.
Preclinical  tests,  also  referred  to  as  nonclinical  studies,  include  laboratory  evaluations  of  product  chemistry,  toxicity  and  formulation,  as  well  as  animal
studies to assess the potential safety and activity of the product candidate. The conduct of the preclinical tests must comply with federal regulations and
requirements including GLPs. The clinical trial sponsor must submit the results of the preclinical tests, together with manufacturing information, analytical
data, any available clinical data or literature and a proposed clinical protocol, to the FDA as part of the IND. Some preclinical testing may continue even
after  the  IND  is  submitted.  The  IND  automatically  becomes  effective  30  days  after  receipt  by  the  FDA  unless  the  FDA  raises  concerns  or  questions
regarding the proposed clinical trials and places the trial on a clinical hold within that 30-day time period. In such a case, the IND sponsor must resolve
FDA’s  outstanding  concerns  before  the  clinical  trial  can  begin.  The  FDA  may  also  impose  clinical  holds  on  a  biological  product  candidate  at  any  time
before or during clinical trials due to safety concerns or non-compliance. If the FDA imposes a clinical hold, trials may not recommence without FDA
authorization and then only under terms authorized by the FDA. Accordingly, we cannot be sure that submission of an IND will result in the FDA allowing
clinical trials to begin, or that, once begun, issues will not arise that suspend or terminate such clinical trials.

13

Table of Contents

Clinical  trials  involve  the  administration  of  the  biological  product  candidate  to  healthy  volunteers  or  patients  under  the  supervision  of  qualified
investigators, generally physicians not employed by or under the trial sponsor’s control. Clinical trials are conducted under protocols detailing, among other
things,  the  objectives  of  the  clinical  trial,  dosing  procedures,  subject  selection  and  exclusion  criteria,  and  the  parameters  to  be  used  to  monitor  subject
safety, including stopping rules that assure a clinical trial will be stopped if certain adverse events should occur. Each protocol and any amendments to the
protocol  must  be  submitted  to  the  FDA  as  part  of  the  IND.  Clinical  trials  must  be  conducted  and  monitored  in  accordance  with  the  FDA’s  regulations
comprising  the  GCP  requirements,  including  the  requirement  that  all  research  patients  provide  informed  consent.  Further,  each  clinical  trial  must  be
reviewed and approved by an institutional review board, or IRB, at or servicing each institution at which the clinical trial will be conducted. An IRB is
independent from the trial sponsor and is charged with protecting the welfare and rights of clinical trial participants and considers such items as whether the
risks to individuals participating in the clinical trials are minimized and are reasonable in relation to anticipated benefits. The IRB also approves the form
and content of the informed consent that must be signed by each clinical trial subject or his or her legal representative and must monitor the clinical trial
until  completed.  Clinical  trials  also  must  be  reviewed  by  an  institutional  biosafety  committee,  or  IBC,  a  local  institutional  committee  that  reviews  and
oversees  basic  and  clinical  research  conducted  at  that  institution.  The  IBC  assesses  the  safety  of  the  research  and  identifies  any  potential  risk  to  public
health or the environment.

Human clinical trials for biologic products are typically conducted in three sequential phases that may overlap or be combined:

a.

b.

c.

Phase 1. The biological product is initially introduced into healthy human subjects and tested for safety. In the case of some products for severe
or life-threatening diseases, especially when the product may be too inherently toxic to ethically administer to healthy volunteers, the initial
human testing is often conducted in patients.

Phase 2. The biological product is evaluated in a limited patient population to identify possible adverse effects and safety risks, to preliminarily
evaluate the efficacy of the product for specific targeted diseases and to determine dosage tolerance, optimal dosage and dosing schedule.

Phase 3. Clinical trials are undertaken to further evaluate dosage, clinical efficacy, potency, and safety in an expanded patient population at
geographically  dispersed  clinical  trial  sites.  These  clinical  trials  are  intended  to  establish  the  overall  risk  to  benefit  ratio  of  the  product  and
provide an adequate basis for product labeling.

Post-approval clinical trials, sometimes referred to as Phase 4 clinical trials, may be conducted after initial marketing approval. These clinical trials are
used to gain additional experience from the treatment of patients in the intended therapeutic indication, particularly for long-term safety follow-up.

During all phases of clinical development, regulatory agencies require extensive monitoring and auditing of all clinical activities, clinical data, and clinical
trial investigators. Annual progress reports detailing the progress of the clinical trials must be submitted to the FDA. Written IND safety reports must be
promptly submitted to the FDA and the investigators for serious and unexpected adverse events, any findings from other studies, tests in laboratory animals
or in vitro testing that suggest a significant risk for human patients, or any clinically important increase in the rate of a serious suspected adverse reaction
over that listed in the protocol or investigator brochure. The sponsor must submit an IND safety report within 15 calendar days after the sponsor determines
that the information qualifies for reporting. The sponsor also must notify the FDA of any unexpected fatal or life-threatening suspected adverse reaction
within  seven  calendar  days  after  the  sponsor’s  initial  receipt  of  the  information.  Phase  1,  Phase  2  and  Phase  3  clinical  trials  may  not  be  completed
successfully within any specified period, if at all. The FDA or the sponsor or its data safety monitoring board may suspend or terminate a clinical trial at
any time on various grounds, including a finding that the research patients are being exposed to an unacceptable health risk, including risks inferred from
other unrelated immunotherapy trials. Similarly, an IRB can suspend or terminate approval of a clinical trial at its institution if the clinical trial is not being
conducted in accordance with the IRB’s requirements or if the biological product has been associated with unexpected serious harm to patients.

Concurrently  with  clinical  trials,  companies  usually  complete  additional  studies  and  must  also  develop  additional  information  about  the  physical
characteristics of the biological product, as well as finalize a process for manufacturing the product in commercial quantities in accordance with cGMP
requirements. To help reduce the risk of the introduction of adventitious agents with use of biological products, the PHSA emphasizes the importance of
manufacturing  control  for  products  whose  attributes  cannot  be  precisely  defined.  The  manufacturing  process  must  be  capable  of  consistently  producing
quality batches of the product candidate and, among other things, the sponsor must develop methods for testing the identity, strength, quality, potency and
purity  of  the  final  biological  product.  Additionally,  appropriate  packaging  must  be  selected  and  tested,  and  stability  studies  must  be  conducted  to
demonstrate that the biological product candidate does not undergo unacceptable deterioration over its shelf life.

Federal law requires that we register all of our clinical trials on a publicly accessible website, and accordingly we disclose information on our clinical trials
on www.clinicaltrials.gov. We must also provide results information for most of our clinical trials, other than Phase 1 clinical trials.

14

Table of Contents

U.S. Review and Approval Processes

After the completion of clinical trials of a biological product, FDA approval of a BLA must be obtained before commercial marketing of the biological
product.  The  BLA  must  include  results  of  product  development,  laboratory  and  animal  studies,  human  trials,  information  on  the  manufacture  and
composition of the product, proposed labeling and other relevant information. The FDA may grant deferrals for submission of certain data or full or partial
waivers. The testing and approval processes require substantial time and effort and there can be no assurance that the FDA will accept the BLA for filing
and, even if filed, that any approval will be granted on a timely basis, if at all.

Under the Prescription Drug User Fee Act, or PDUFA, as amended, each BLA must be accompanied by a significant user fee. The FDA adjusts the PDUFA
user fees on an annual basis. The PDUFA also imposes an annual program fee for approved biological products. Fee waivers or reductions are available in
certain circumstances, including a waiver of the application fee for the first application filed by a small business. Additionally, no user fees are assessed on
BLAs for products designated as orphan drugs, unless the application also includes a non-orphan indication.

Within 60 days following submission of the application, the FDA reviews a BLA submitted to determine if it is substantially complete before the agency
accepts it for filing. The FDA may refuse to file any BLA that it deems incomplete or not properly reviewable at the time of submission and may request
additional information. In this event, the BLA must be resubmitted with the additional information. The resubmitted application also is subject to review
before the FDA accepts it for filing. Once the submission is accepted for filing, the FDA begins an in-depth substantive review of the BLA. The FDA
reviews the BLA to determine, among other things, whether the proposed product is safe, potent, and/or effective for its intended use, and has an acceptable
purity  profile,  and  whether  the  product  is  being  manufactured  in  accordance  with  cGMP  to  assure  and  preserve  the  product’s  identity,  safety,  strength,
quality, potency and purity. The FDA may refer applications for novel biological products or biological products that present difficult questions of safety or
efficacy to an advisory committee, typically a panel that includes clinicians and other experts, for review, evaluation and a recommendation as to whether
the application should be approved and under what conditions. The FDA is not bound by the recommendations of an advisory committee, but it considers
such  recommendations  carefully  when  making  decisions.  During  the  biological  product  approval  process,  the  FDA  also  will  determine  whether  a  Risk
Evaluation and Mitigation Strategy, or REMS, is necessary to assure the safe use of the biological product. If the FDA concludes a REMS is needed, the
sponsor of the BLA must submit a proposed REMS. The FDA will not approve a BLA without a REMS, if required.

Before  approving  a  BLA,  the  FDA  will  inspect  the  facilities  at  which  the  product  is  manufactured.  The  FDA  will  not  approve  the  product  unless  it
determines that the manufacturing processes and facilities are in compliance with cGMP requirements and adequate to assure consistent production of the
product within required specifications. For immunotherapy products, the FDA also will not approve the product if the manufacturer is not in compliance
with the GTPs, to the extent applicable. These are FDA regulations and guidance documents that govern the methods used in, and the facilities and controls
used for, the manufacture of HCT/Ps. The primary intent of the GTP requirements is to ensure that cell and tissue-based products are manufactured in a
manner  designed  to  prevent  the  introduction,  transmission  and  spread  of  communicable  disease.  FDA  regulations  also  require  HCT/P  establishments  to
register and list their HCT/Ps with the FDA and, when applicable, to evaluate donors through screening and testing. Additionally, before approving a BLA,
the FDA will typically inspect one or more clinical sites to assure that the clinical trials were conducted in compliance with IND trial requirements and
GCP requirements. To maintain compliance with CGMPs, GTPs, and GCPs, an applicant must incur significant expenditure of time, money and effort in
the areas of training, record keeping, production, and quality control.

Notwithstanding the submission of relevant data and information, the FDA may ultimately decide that the BLA does not satisfy its regulatory criteria for
approval and deny approval. Data obtained from clinical trials are not always conclusive and the FDA may interpret data differently than we interpret the
same data. If the agency decides not to approve the BLA in its present form, the FDA will issue a complete response letter that describes all of the specific
deficiencies in the BLA identified by the FDA. The deficiencies identified may be minor, for example, requiring labeling changes, or major, for example,
requiring additional clinical trials. Additionally, the complete response letter may include recommended actions that the applicant might take to place the
application in a condition for approval. If a complete response letter is issued, the applicant may either resubmit the BLA, addressing all of the deficiencies
identified in the letter, or withdraw the application.

If  a  product  receives  regulatory  approval,  the  approval  may  be  significantly  limited  to  specific  diseases  and  dosages  or  the  indications  for  use  may
otherwise be limited, which could restrict the commercial value of the product.

Further, the FDA may require that certain contraindications, warnings or precautions be included in the product labeling. The FDA may impose restrictions
and conditions on product distribution, prescribing, or dispensing in the form of a REMS or other risk management plan, or otherwise limit the scope of
any approval. In addition, the FDA may require post marketing clinical

15

Table of Contents

trials, sometimes referred to as Phase 4 clinical trials, designed to further assess a biological product’s safety and effectiveness, and testing and surveillance
programs to monitor the safety of approved products that have been commercialized.

In addition, under the Pediatric Research Equity Act, or PREA, a BLA or supplement to a BLA must contain data to assess the safety and effectiveness of
the product for the claimed indications in all relevant pediatric subpopulations and to support dosing and administration for each pediatric subpopulation
for which the product is safe and effective. The FDA may grant deferrals for submission of data or full or partial waivers. Unless otherwise required by
regulation, the PREA does not apply to any product for an indication for which orphan designation has been granted. However, if only one indication for a
product  has  orphan  designation,  a  pediatric  assessment  may  still  be  required  for  any  applications  to  market  that  same  product  for  the  non-orphan
indication(s).  Sponsors  in  satisfaction  of  this  obligation  may  receive  an  additional  six  months  of  marketing  exclusivity  for  all  dosage  forms  and  all
indications with the same active moiety as the drug studied.

Orphan Drug Designation

Under the Orphan Drug Act, the FDA may grant orphan designation to a drug or biologic intended to treat a rare disease or condition, which is generally a
disease  or  condition  that  affects  fewer  than  200,000  individuals  in  the  U.S.,  or  more  than  200,000  individuals  in  the  U.S.  and  for  which  there  is  no
reasonable expectation that the cost of developing and making available in the U.S. a drug or biologic for this type of disease or condition will be recovered
from sales in the U.S. for that drug or biologic. Orphan drug designation must be requested before submitting a BLA. After the FDA grants orphan drug
designation, the generic identity of the therapeutic agent and its potential orphan use are disclosed publicly by the FDA. The orphan drug designation does
not  shorten  the  duration  of  the  regulatory  review  or  approval  process,  but  does  provide  certain  advantages,  such  as  a  waiver  of  PDUFA  fees,  enhanced
access to FDA staff, and potential waiver of the PREA requirements discussed above.

If a product that has orphan drug designation subsequently receives the first FDA approval for the disease for which it has such designation, the product is
entitled  to  orphan  product  exclusivity,  which  means  that  the  FDA  may  not  approve  any  other  applications,  including  a  full  BLA,  to  market  the  same
biologic for the same indication for seven years, except in limited circumstances, such as a showing of clinical superiority to the product with orphan drug
exclusivity. Orphan drug exclusivity does not prevent FDA from approving a different drug or biologic for the same disease or condition, or the same drug
or biologic for a different disease or condition. Among the other benefits of orphan drug designation are tax credits for certain research and a waiver of the
BLA application user fee.

A designated orphan drug may not receive orphan drug exclusivity if it is approved for a use that is broader than the indication for which it received orphan
designation.  In  addition,  exclusive  marketing  rights  in  the  U.S.  may  be  lost  if  the  FDA  later  determines  that  the  request  for  designation  was  materially
defective or if the manufacturer is unable to assure sufficient quantities of the product to meet the needs of patients with the rare disease or condition.

Expedited Development and Review Programs

The FDA has a Fast Track program that is intended to expedite or facilitate the process for reviewing new products that meet certain criteria. Specifically,
new  products  are  eligible  for  Fast  Track  designation  if  they  are  intended  to  treat  a  serious  or  life-threatening  disease  or  condition  and  demonstrate  the
potential to address unmet medical needs, or if the drug has been designated as a qualified infectious disease product. Fast Track designation applies to the
combination of the product and the specific indication for which it is being studied. Under Fast Track, the FDA may consider for review sections of the
BLA on a rolling basis before the complete application is submitted, if the sponsor provides a schedule for the submission of the sections of the BLA, the
FDA agrees to accept sections of the BLA and determines that the schedule is acceptable, and the sponsor pays any required user fees upon submission of
the first section of the BLA. Even if Fast Track designation is granted, it may be rescinded if the product no longer meets the qualifying criteria.

Any product, submitted to the FDA for approval, including a product with a Fast Track designation, may also be eligible for other types of FDA programs
intended to expedite development and review, such as priority review and accelerated approval. A product is eligible for priority review if it treats a serious
condition  and,  if  approved,  would  provide  a  significant  improvement  in  safety  and  efficacy.  The  FDA  will  attempt  to  direct  additional  resources  to  the
evaluation of an application for a new product designated for priority review in an effort to facilitate the review. Additionally, a product may be eligible for
accelerated  approval.  Products  studied  for  their  safety  and  effectiveness  in  treating  serious  or  life-threatening  diseases  or  conditions  may  receive
accelerated  approval  upon  a  determination  that  the  product  treats  a  serious  condition,  provides  a  meaningful  advantage  over  available  therapies,  and
demonstrates an effect on a surrogate endpoint that is reasonably likely to predict clinical benefit, or on a clinical endpoint that can be measured earlier than
irreversible morbidity or mortality, that is reasonably likely to predict an effect on irreversible morbidity or mortality or other clinical benefit, taking into
account the severity, rarity, or prevalence of the condition and the availability or lack of alternative treatments. As a condition of approval, the FDA may
require that a sponsor of a drug or biological product receiving accelerated approval perform appropriate post-marketing clinical studies to verify and

16

Table of Contents

describe  the  predicted  effect  on  irreversible  morbidity  or  mortality  or  other  clinical  benefit.  In  addition,  the  FDA  currently  requires  as  a  condition  for
accelerated approval pre-approval of promotional materials, which could adversely impact the timing of the commercial launch of the product. The FDCA
also provides expedited procedures for FDA withdrawal of approval of a product approved through accelerated approval. Fast Track designation, priority
review and accelerated approval do not change the standards for approval but may expedite the development or approval process.

Breakthrough Therapy Designation is intended to expedite the development and review of products that treat serious or life-threatening conditions. The
designation  requires  preliminary  clinical  evidence  that  may  demonstrate  substantial  improvement  on  a  clinically  significant  endpoint  over  available
therapies.  The  designation  includes  all  of  the  Fast  Track  program  features,  as  well  as  more  intensive  FDA  interaction  and  guidance,  organizational
commitment, and other potential actions to expedite review. The Breakthrough Therapy Designation is a distinct status from both accelerated approval and
priority review, which can also be granted to the same product if relevant criteria are met. If a product is designated as breakthrough therapy, the FDA will
expedite the development and review of such product. Even if a Breakthrough Therapy Designation is granted, it may be rescinded if the product no longer
meets the qualifying criteria.

Other U.S. Health Care Laws and Compliance Requirements

In the U.S., our activities are potentially subject to regulation by various federal, state and local authorities in addition to the FDA, including but not limited
to, the Centers for Medicare and Medicaid Services, or CMS, other divisions of the U.S. Department of Health and Human Services, or HHS, such as the
Office of Inspector General, the U.S. Department of Justice, or DOJ, and individual U.S. Attorney offices within the DOJ, and state and local governments.
For example, sales, marketing and scientific/educational grant programs must comply with the anti-fraud and abuse provisions of the Social Security Act,
the false claims laws, the privacy provisions of the Health Insurance Portability and Accountability Act, or HIPAA, the sunshine provisions of the Patient
Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act, collectively, the Affordable Care Act, and similar
state laws, each as amended.

The  federal  Anti-Kickback  Statute  prohibits,  among  other  things,  any  person  or  entity,  from  knowingly  and  willfully  offering,  paying,  soliciting  or
receiving any remuneration, directly or indirectly, overtly or covertly, in cash or in kind, to induce or in return for either the referral of an individual, or for
the purchasing, leasing, ordering or arranging for the purchase, lease or order of any good, facility, item or service reimbursable, in whole or in part, under
Medicare, Medicaid or other federal health care programs. The term remuneration has been interpreted broadly to include anything of value. The Anti-
Kickback Statute has been interpreted to apply to arrangements between biologic manufacturers on one hand and prescribers, purchasers, and formulary
managers on the other. There are a number of statutory exceptions and regulatory safe harbors protecting some common activities from prosecution. The
exceptions  and  safe  harbors  are  drawn  narrowly  and  practices  that  involve  remuneration  that  may  be  alleged  to  be  intended  to  induce  prescribing,
purchasing or recommending may be subject to scrutiny if they do not qualify for an exception or safe harbor. Failure to meet all of the requirements of a
particular applicable statutory exception or regulatory safe harbor does not make the conduct per se illegal under the Anti-Kickback Statute. Instead, the
legality of the arrangement will be evaluated on a case-by-case basis based on a cumulative review of all of its facts and circumstances.

Additionally, the intent standard under the Anti-Kickback Statute was amended by the Affordable Care Act to a stricter standard such that a person or entity
no longer needs to have actual knowledge of the statute or specific intent to violate it in order to have committed a violation. The Anti-Kickback Statute
may be violated if only one purpose of the remuneration is to induce referrals. In addition, the Affordable Care Act codified case law that a claim including
items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the federal civil False
Claims Act.

The civil monetary penalties law imposes penalties against any person or entity who, among other things, is determined to have presented or caused to be
presented a claim to a federal health program that the person knows or should know is for an item or service that was not provided as claimed or is false or
fraudulent.

The  federal  false  claims  laws,  including  but  not  limited  to  the  federal  civil  False  Claims  Act,  prohibit,  among  other  things,  any  person  or  entity  from
knowingly presenting, or causing to be presented, a false claim for payment to, or approval by, the federal government. Pharmaceutical and other health
care companies have been prosecuted under these laws for allegedly providing free product to customers with the expectation that the customers would bill
federal programs for the product. Other companies have been prosecuted for causing false claims to be submitted because of the companies’ marketing of
the product for unapproved, that is, off-label, and thus non-reimbursable, uses.

HIPAA created additional new federal criminal statutes that prohibit knowingly and willfully executing, or attempting to execute, a scheme to defraud or to
obtain, by means of false or fraudulent pretenses, representations or promises, any money or property owned by, or under the control or custody of, any
health care benefit program, including private third-party payors and knowingly

17

Table of Contents

and  willfully  falsifying,  concealing  or  covering  up  by  trick,  scheme  or  device,  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.

Also, many states have similar fraud and abuse statutes or regulations that apply to items and services reimbursed under Medicaid and other state programs,
or, in several states, apply regardless of the payor.

We may be subject to data privacy and security regulations by both the federal government and the states in which we conduct our business. HIPAA, as
amended  by  the  Health  Information  Technology  for  Economic  and  Clinical  Health  Act,  or  HITECH,  and  their  implementing  regulations,  imposes
requirements  relating  to  the  privacy,  security  and  transmission  of  individually  identifiable  health  information.  Among  other  things,  HITECH  makes
HIPAA’s security standards directly applicable to business associates independent contractors or agents of covered entities that receive or obtain protected
health information in connection with providing a service on behalf of a covered entity, and their covered subcontractors. HITECH also created four new
tiers of civil monetary penalties, amended HIPAA to make civil and criminal penalties directly applicable to business associates, and gave state attorneys
general new authority to file civil actions for damages or injunctions in federal courts to enforce the federal HIPAA laws and seek attorneys’ fees and costs
associated with pursuing federal civil actions. In addition, state laws govern the privacy and security of health information in specified circumstances, many
of which differ from each other in significant ways and may not have the same effect, thus complicating compliance efforts.

Additionally,  the  federal  Physician  Payments  Sunshine  Act,  and  its  implementing  regulations,  require  that  certain  manufacturers  of  drugs,  devices,
biological  and  medical  supplies  for  which  payment  is  available  under  Medicare,  Medicaid  or  the  Children’s  Health  Insurance  Program,  with  certain
exceptions,  to  report  annually  information  related  to  certain  payments  or  other  transfers  of  value  made  or  distributed  to  physicians  (defined  to  include
doctors, dentists, optometrists, podiatrists, and chiropractors), and teaching hospitals, or to entities or individuals at the request of, or designated on behalf
of, the physicians and teaching hospitals and require that certain manufacturers and group purchasing organizations report annually certain ownership and
investment interests held by physicians and their immediate family members. Beginning in 2022, applicable manufacturers will also be required to report
information regarding payments and other transfers of value provided during the previous year to physician assistants, nurse practitioners, clinical nurse
specialists, certified nurse anesthetists, anesthesiologists assistants, and certified nurse-midwives.

We will also be required to begin satisfying the product tracing, verification, and reporting requirements set out in the Drug Quality and Security Act.

In order to distribute products commercially, we must also comply with state laws that require the registration of manufacturers and wholesale distributors
of  drug  and  biological  products  in  a  state,  including,  in  certain  states,  manufacturers  and  distributors  who  ship  products  into  the  state  even  if  such
manufacturers or distributors have no place of business within the state.

Several  states  have  enacted  legislation  requiring  pharmaceutical  and  biotechnology  companies  to,  among  other  things,  establish  marketing  compliance
programs,  file  periodic  reports  with  the  state,  make  periodic  public  disclosures  on  sales,  marketing,  pricing,  clinical  trials  and  other  activities,  and/or
register  their  sales  representatives,  as  well  as  to  prohibit  pharmacies  and  other  health  care  entities  from  providing  certain  physician  prescribing  data  to
pharmaceutical  and  biotechnology  companies  for  use  in  sales  and  marketing,  and  to  prohibit  certain  other  sales  and  marketing  practices.  All  of  our
activities are potentially subject to federal and state consumer protection and unfair competition laws.

If our operations are found to be in violation of any of the laws described above or any other government regulations that apply to us, we may be subject to
penalties, including significant administrative, civil and criminal penalties, damages, fines, additional reporting requirements and oversight if we become
subject to a corporate integrity agreement or similar agreement to resolve allegations of noncompliance with these laws, exclusion from participation in
government  health  care  programs,  such  as  Medicare  and  Medicaid,  disgorgement,  contractual  damages,  reputational  harm  and  the  curtailment  or
restructuring of our operations.

Coverage, Pricing and Reimbursement

Significant uncertainty exists as to the coverage and reimbursement status of any product candidates for which we obtain regulatory approval. In the U.S.
and markets in other countries, sales of any products for which we receive regulatory approval for commercial sale will depend, in part, on the extent to
which third-party payors provide coverage and establish adequate reimbursement levels for such products. In the U.S., third-party payors include federal
and state health care programs, private managed care providers, health insurers and other organizations. The process for determining whether a third-party
payor will provide coverage for a product may be separate from the process for setting the price of a product or for establishing the reimbursement rate that
such a payor will pay for the product. Third-party payors may limit coverage to specific products on an approved list, also known as a formulary, which
might not include all of the FDA-approved products for a particular indication. Third-party payors are increasingly challenging the price, examining the
medical necessity and reviewing the cost-effectiveness of

18

Table of Contents

medical  products,  therapies  and  services,  in  addition  to  questioning  their  safety  and  efficacy.  We  may  need  to  conduct  expensive  pharmaco-economic
studies in order to demonstrate the medical necessity and cost-effectiveness of our products, in addition to the costs required to obtain the FDA approvals.
Our product candidates may not be considered medically necessary or cost-effective. A payor’s decision to provide coverage for a product does not imply
that  an  adequate  reimbursement  rate  will  be  approved.  Further,  one  payor’s  determination  to  provide  coverage  for  a  product  does  not  assure  that  other
payors will also provide coverage for the product. Adequate third-party reimbursement may not be available to enable us to maintain price levels sufficient
to realize an appropriate return on our investment in product development.

Different pricing and reimbursement schemes exist in other countries. In the EU, governments influence the price of pharmaceutical products through their
pricing  and  reimbursement  rules  and  control  of  national  health  care  systems  that  fund  a  large  part  of  the  cost  of  those  products  to  consumers.  Some
jurisdictions operate positive and negative list systems under which products may only be marketed once a reimbursement price has been agreed. To obtain
reimbursement or pricing approval, some of these countries may require the completion of clinical trials that compare the cost-effectiveness of a particular
product candidate to currently available therapies. Other member states allow companies to fix their own prices for medicines, but monitor and control
company profits. The downward pressure on health care costs has become very intense. As a result, increasingly high barriers are being erected to the entry
of new products. In addition, in some countries, cross-border imports from low-priced markets exert a commercial pressure on pricing within a country.

The marketability of any product candidates for which we receive regulatory approval for commercial sale may suffer if the government and third-party
payors fail to provide adequate coverage and reimbursement. In addition, emphasis on managed care in the U.S. has increased and we expect will continue
to increase the pressure on health care pricing. Coverage policies and third-party reimbursement rates may change at any time. Even if favorable coverage
and  reimbursement  status  is  attained  for  one  or  more  products  for  which  we  receive  regulatory  approval,  less  favorable  coverage  policies  and
reimbursement rates may be implemented in the future.

Health Reform

In the United States and some foreign jurisdictions, there have been, and we anticipate there will continue to be, several legislative and regulatory changes
and proposed healthcare reform measures 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 federal and state legislative initiatives, including
those designed to limit the pricing, coverage, and reimbursement of pharmaceutical and biopharmaceutical products, especially under government-funded
healthcare programs, and increased governmental control of drug pricing. For example, the Patient Protection and Affordable Care Act, as amended by the
Health Care and Education Reconciliation Act, or collectively, the PPACA, which was enacted in March 2010, substantially changed the way healthcare is
financed by both governmental and private insurers, and continues to significantly impact the U.S. pharmaceutical industry. The PPACA remains subject to
challenge, and the U.S. Supreme Court is currently reviewing the constitutionality of the PPACA, although it is unclear when a decision will be reached.
Moreover, payment methodologies may also be subject to changes in healthcare legislation and regulatory initiatives. At the state level, legislatures have
increasingly passed legislation and implemented regulations designed to control pharmaceutical and biological product pricing, including price or patient
reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases,
designed  to  encourage  importation  from  other  countries  and  bulk  purchasing.  It  is  also  possible  that  additional  governmental  action  will  be  taken  in
response to the COVID-19 pandemic.

The Foreign Corrupt Practices Act

The  Foreign  Corrupt  Practices  Act,  or  FCPA,  prohibits  any  U.S.  individual  or  business  from  paying,  offering,  or  authorizing  payment  or  offering  of
anything of value, directly or indirectly, to any foreign official, political party or candidate for the purpose of influencing any act or decision of the foreign
entity in order to assist the individual or business in obtaining or retaining business. The FCPA also obligates companies whose securities are listed in the
U.S. to comply with accounting provisions requiring the company to maintain books and records that accurately and fairly reflect all transactions of the
corporation, including international subsidiaries, and to devise and maintain an adequate system of internal accounting controls for international operations.

19

Table of Contents

Additional Regulation

In addition to the foregoing, state and federal laws regarding environmental protection and hazardous substances, including the Occupational Safety and
Health Act, the Resource Conservancy and Recovery Act and the Toxic Substances Control Act, affect our business. These and other laws govern our use,
handling and disposal of various biological, chemical and radioactive substances used in, and wastes generated by, our operations. If our operations result
in contamination of the environment or expose individuals to hazardous substances, we could be liable for damages and governmental fines. We believe
that we are in material compliance with applicable environmental laws and that continued compliance therewith will not have a material adverse effect on
our business. We cannot predict, however, how changes in these laws may affect our future operations.

20

Table of Contents

Employees

As of December 31, 2020, we had 16 employees, all of whom were full-time, 10 of whom were engaged in research and development activities and 6 of
whom were engaged in business development, finance, information systems, facilities, human resources or administrative support. None of our employees
is subject to a collective bargaining agreement. We consider our relationship with our employees to be good.

Our  human  capital  objectives  include,  as  applicable,  identifying,  recruiting,  retaining,  incentivizing  and  integrating  our  existing  and  new  employees,
advisors and consultants. The principal purposes of our equity and cash incentive plans are to attract, retain and reward personnel through the granting of
stock-based and cash-based compensation awards, in order to increase stockholder value and the success of our company by motivating such individuals to
perform to the best of their abilities and achieve objectives.

The  success  of  our  business  is  fundamentally  connected  to  the  well-being  of  our  employees.  Accordingly,  we  are  committed  to  their  health,  safety  and
wellness.  We  provide  our  employees  and  their  families  with  access  to  a  variety  of  innovative,  flexible  and  convenient  health  and  wellness  program,
including benefits that provide protection and security so they can have peace of mind concerning events that may require time away from work or that
impact their financial well-being; that support their physical and mental health by providing tools and resources to help them improve or maintain their
health status and encourage healthy behaviors; and that offer choice where possible so they can customize their benefits to meet their needs and the needs
of  their  families.  In  response  to  the  COVID-19  pandemic,  we  implemented  significant  changes  that  we  determined  were  in  the  best  interest  of  our
employees, as well as the community in which we operate, and which comply with government regulations, including working from home.

Corporate Information

We  were  incorporated  in  Delaware  in  July  2004.  Our  principal  executive  offices  are  located  at  3730  Kirby  Drive,  Suite  1200,  Houston,  Texas  and  our
telephone number is (832) 384-1100. Our corporate website address is www.bellicum.com. Our Annual Report on Form 10-K, Quarterly Reports on Form
10-Q, Current Reports on Form 8-K, and amendments to reports filed pursuant to Sections 13(a) and 15(d) of the Securities Exchange Act of 1934, as
amended, or the Exchange Act, will be made available free of charge on our website as soon as reasonably practicable after we electronically file such
material with, or furnish it to, the Securities and Exchange Commission, or the SEC. The contents of our website are not incorporated into this Annual
Report and our reference to the URL for our website is intended to be an inactive textual reference only.

21

Table of Contents

Item 1A. Risk Factors

Our business and results of operations are subject to a number of risks and uncertainties. You should carefully consider the following risk factors, as well
as the other information in this report, and in our other public filings. The occurrence of any of the following risks could harm our business, financial
condition, results of operations and/or growth prospects or cause our actual results to differ materially from those contained in forward-looking statements
we have made in this report and those we may make from time to time. You should consider all of the risk factors described when evaluating our business.

Risks Related to Our Business and Industry

We have incurred net losses from operations in every year since our inception and anticipate that we will continue to incur net losses in the future.

We are a clinical stage biopharmaceutical company, have no products approved for commercial sale and have incurred significant losses since our inception
in 2004. To date, we have financed our operations primarily through equity and debt financings. For the fiscal years ended December 31, 2020 and 2019,
we reported a net loss of $7.7 million and $112.5 million, respectively. As of December 31, 2020, we had an accumulated deficit of $540.7 million. We
expect to continue to incur significant losses from operations for the foreseeable future, and we expect these accumulated losses to increase as we continue
our research and development of, and seek regulatory approvals for, our product candidates.

In addition, if we obtain regulatory approval of and seek to commercialize any of our product candidates, we will likely incur significant sales, marketing
and manufacturing expenses and may continue to incur substantial research and development expenses for additional post-marketing approval development
requirements related to such product.

We may encounter unforeseen expenses, difficulties, complications, delays and other unknown factors that may adversely affect our business. The size of
our future net losses will depend, in part, on the rate of future growth of our expenses and our ability to generate revenue. Our prior losses and expected
future losses have had and will continue to have an adverse effect on our stockholders’ equity and working capital.

We  will  require  significant  funding  to  complete  the  development  and  commercialization  of  our  product  candidates.  If  we  fail  to  obtain  additional
financing, we may have to delay, reduce or eliminate our development programs or commercialization efforts.

Our  operations  have  consumed  substantial  amounts  of  cash  since  our  inception.  We  expect  to  continue  to  spend  substantial  amounts  to  continue  the
preclinical and clinical development of our product candidates and other research and development programs.

As of December 31, 2020, we had cash, cash equivalents and restricted cash of approximately $37.0 million. We maintain our cash and cash equivalents
with high quality, accredited financial institutions. These amounts at times may exceed federally insured limits. Cash, cash equivalents and restricted cash
are expected to be sufficient to fund our operating expenses and capital expenditure requirements through at least one year from the financial statement
issuance date..

We  will  need  to  finance  future  cash  needs  through  public  or  private  equity  offerings,  debt  financings,  strategic  partnerships  and  alliances  or  licensing
arrangements. We cannot be certain that additional funding will be available on acceptable terms, or at all. In addition, the COVID-19 pandemic continues
to rapidly evolve and has already resulted in a significant disruption of global financial markets. Our ability to raise additional capital may be adversely
impacted by potential worsening global economic conditions and the recent disruptions to, and volatility in, the credit and financial markets in the U.S. and
worldwide  resulting  from  the  pandemic.  If  the  disruption  persists  and/  or  deepens,  we  could  experience  an  inability  to  access  additional  capital,  which
could  in  the  future  negatively  affect  our  capacity  to  fund  research  and  development  programs,  including  discovery  research,  preclinical  and  clinical
development  activities.  In  addition,  the  securities  purchase  agreement  for  our  August  2019  private  placement  transaction  requires  us  to  obtain  investor
consent prior to taking a range of corporate financing actions, including issuing equity securities that are senior or pari passu to the Series 3 preferred stock
and incurring new debt in excess of $1,000,000. If we are unable to raise additional capital in sufficient amounts or on terms acceptable to us, we will need
to significantly delay, scale back or discontinue the development or commercialization of our product candidates. We also could be required to:

•

•

•

seek collaborators for one or more of our current or future product candidates on terms that are less favorable than might otherwise be available;

relinquish  or  license  on  unfavorable  terms  our  rights  to  technologies  or  product  candidates  that  we  otherwise  would  seek  to  develop  or
commercialize ourselves; or

seek a third party to acquire us or our assets.

If  we  are  unable  to  raise  additional  funds  on  a  timely  basis,  we  may  be  required  to  reduce  expenses  through  the  delay,  reduction  or  curtailment  of  our
development programs, or implement further reduction of costs for facilities and administration. For example, in

22

Table of Contents

October 2020, we announced that we implemented a restructuring plan, which included, among other things, a 79% reduction in staff, from 68 to 14 full-
time  employees,  by  the  end  of  2020  and  discontinuation  of  discovery  research  and  new  product  development.  We  have  incurred  $2.5  million  in
restructuring expenses, including severance expenses of $1.2 million and the Houston office's impairment of $1.3 million. Moreover, if we do not obtain
such additional funds, there could be substantial doubt about our ability to continue as a going concern and increased risk of insolvency, which could result
in a total loss of investment to our stockholders and other security holders.

The  FDA  and  other  regulatory  authorities  may  disagree  with  our  regulatory  plans  and  we  may  fail  to  obtain  regulatory  approval  of  our  product
candidates.

Our business and future success depends, in part, on our ability to obtain regulatory authority assent to conduct human clinical trials, obtain regulatory
approval to launch a product based on evidence of clinical safety and efficacy and then successfully commercialize our clinical product candidates. All of
our product candidates will require additional clinical and non-clinical development, regulatory review and approval in multiple jurisdictions, substantial
investment, and access to sufficient commercial manufacturing capacity and significant marketing efforts before we can expect to generate any revenue
from product sales.

Our product candidates could fail to receive regulatory approval for many reasons, including the following:

•

The  FDA  or  comparable  regulatory  authority  or  an  Institutional  Review  Board  or  comparable  ethics  oversight  body  may  decline  to  clear  the
applicable Investigational New Drug Application (IND) or equivalent regulatory submission necessary to conduct human clinical trials;

• we may be unable to demonstrate to the satisfaction of the FDA or comparable foreign regulatory authorities that our product candidates have the

necessary safety, purity, and potency for any of their proposed indications;

•

the results of clinical trials may not meet the level of statistical significance required by the FDA or comparable foreign regulatory authorities for
approval;

• we may be unable to demonstrate that our product candidates’ clinical and other benefits outweigh their safety risks;

• we may encounter serious and unexpected adverse events during clinical trials that render our products unsafe for use in humans;

•

•

•

•

the FDA or comparable foreign regulatory authorities may disagree with our interpretation of data from preclinical studies or clinical trials;

the  data  collected  from  clinical  trials  of  our  product  candidates  may  not  be  sufficient  to  the  satisfaction  of  the  FDA  or  comparable  foreign
regulatory authorities to support the submission of a BLA or other comparable submission in foreign jurisdictions or to obtain regulatory approval
in Europe, the U.S. or elsewhere;

the  FDA  or  comparable  foreign  regulatory  authorities  may  fail  to  approve  our  manufacturing  processes  and/or  facilities  of  third-party
manufacturers with which we contract for clinical and commercial supplies; and

the approval policies or regulations of the FDA or comparable foreign regulatory authorities may significantly change in a manner rendering our
clinical data insufficient for approval.

Biopharmaceutical product development is a highly speculative undertaking and involves a substantial degree of uncertainty. We have never generated
any revenue from product sales and may never be profitable.

We  have  devoted  substantially  all  of  our  financial  resources  and  efforts  to  developing  our  proprietary  CID  technology  platform,  identifying  potential
product candidates and conducting preclinical studies and clinical trials. We are in the early stages of developing our product candidates, and we have not
completed  development  of  any  products.  Our  ability  to  generate  revenue  and  achieve  profitability  depends  in  large  part  on  our  ability,  alone  or  with
partners, to successfully complete the development of, obtain the necessary regulatory approvals for, and commercialize, product candidates. We do not
anticipate generating revenues from sales of products for the foreseeable future. Our ability to generate future revenues from product sales depends heavily
on our success in:

•

•

•

•

•

•

completing requisite clinical trials through all phases of clinical development of our current product candidates;

seeking and obtaining marketing approvals for product candidates that successfully complete clinical trials, if any;

launching and commercializing product candidates for which we obtain marketing approval, if any, with a partner or, if launched independently,
successfully establishing a sales force, marketing and distribution infrastructure;

identifying and developing new product candidates;

progressing our pre-clinical programs into human clinical trials;

establishing and maintaining supply and manufacturing relationships with third parties;

23

Table of Contents

•

developing new molecular switches based on our proprietary CID technology platform;

• maintaining, protecting, expanding and enforcing our intellectual property; and

•

attracting, hiring and retaining qualified personnel.

Because of the numerous risks and uncertainties associated with biologic product development, we are unable to predict the likelihood or timing for when
we may receive regulatory approval of any of our current or future product candidates or when we will be able to achieve or maintain profitability, if ever.
If  we  do  not  receive  regulatory  approvals,  our  business,  prospects,  financial  condition  and  results  of  operations  will  be  adversely  affected.  Even  if  we
obtain the regulatory approvals to market and sell one or more of our product candidates, we may never generate significant revenues from any commercial
sales for several reasons, including because the market for our products may be smaller than we anticipate, or products may not be adopted by physicians
and  payors  or  because  our  products  may  not  be  as  efficacious  or  safe  as  other  treatment  options.  If  we  fail  to  successfully  commercialize  one  or  more
products, we may be unable to generate sufficient revenues to sustain and grow our business and our business, prospects, financial condition and results of
operations will be adversely affected. In addition, our expenses could increase beyond expectations if we are required by the FDA, or foreign regulatory
agencies, to perform studies and clinical trials in addition to those that we currently anticipate for our product candidates, or if there are any delays in our or
our  partners  completing  clinical  trials  or  the  development  of  any  of  our  product  candidates.  Further,  if  one  or  more  of  the  product  candidates  that  we
independently develop is approved for commercial sale, we expect to incur significant costs associated with commercializing any such product candidates.
Finally, even if we do achieve profitability, we may not be able to sustain or increase profitability on a quarterly or annual basis.

Our CID technology is novel and largely unproven.

Our proprietary CID technology platform is novel and there are no approved products or third-party product candidates in late-stage clinical trials based on
this technology. Additionally, the safety and efficacy profile of rimiducid has not been subject to large scale clinical testing. If rimiducid is found to have a
poor safety profile in clinical trials, or if our technology is not effective, we may be required to redesign all of our product candidates, which would require
significant  time  and  expense.  In  addition,  our  CID  platform  technology  may  not  be  applicable  or  effective  in  the  development  of  additional  cellular
immunotherapies beyond our current programs which would adversely affect our business and prospects.

Cell therapies are novel and present significant challenges.

CAR-T  and  other  cell  therapy  product  candidates  represent  a  relatively  new  field  of  cellular  immunotherapy.  Advancing  this  novel  and  personalized
therapy creates significant challenges for us, including:

•

•

•

•

•

•

obtaining regulatory approval, as the FDA and other regulatory authorities have limited experience with commercial development of cell therapies
for cancer;

sourcing clinical and, if approved, commercial supplies for the materials used to manufacture and process our product candidates;

developing a consistent and reliable process, while limiting contamination risks, for engineering and manufacturing T cells and other immune cell
types ex vivo and infusing the engineered cells into the patient;

educating medical personnel regarding the potential safety benefits, as well as the challenges, of incorporating our product candidates into their
treatment regimens;

establishing sales and marketing capabilities upon obtaining any regulatory approval to gain market acceptance of a novel therapy; and

the availability of coverage and adequate reimbursement from third-party payors for our novel and personalized therapy.

Our  inability  to  successfully  develop  CAR-T  and  other  cell  therapies  or  develop  processes  related  to  the  manufacture  or  commercialization  of  these
therapies would adversely affect our business, results of operations and prospects.

Our clinical trials may fail to adequately demonstrate the safety and efficacy of any of our product candidates, which would prevent or delay regulatory
approval and commercialization.

Clinical testing is expensive, takes many years to complete, and its outcome is inherently uncertain. Failure can occur at any time during the clinical trial
process and our product candidates are subject to the risks of failure inherent in biologic drug development. Success in early clinical trials does not mean
that later clinical trials will be successful because product candidates in later-stage clinical trials may fail to demonstrate sufficient safety or efficacy despite
having progressed through initial clinical testing, even at statistically significant levels. We will be required to demonstrate through clinical trials that our
product  candidates  are  safe  and  effective  for  use  in  the  target  indication  before  we  can  obtain  regulatory  approvals  for  commercial  sale.  Companies
frequently suffer significant setbacks in late-stage clinical trials, even after earlier clinical trials have shown promising results and most product candidates
that commence clinical trials are never approved as products. We expect there may be greater variability in

24

Table of Contents

results for cellular immunotherapy products processed and administered on a patient-by-patient basis like some of our CID technology-based development
and product candidates than for “off-the-shelf” products, like many drugs.

If any of our product candidates fail to demonstrate sufficient safety or efficacy, we would experience potentially significant delays in, or be required to
abandon our development of the product candidate, which would have a material and adverse impact on our business, prospects, financial condition and
results of operations.

Many of our current product candidates are in early stage clinical trials, and we may experience unfavorable results in the future.

A Phase 1/2 clinical trial is ongoing for BPX-601 for the treatment of prostate and pancreatic cancer, and a Phase 1/2 clinical trial for BPX-603 in HER2-
positive solid tumors. We may not be able to commence clinical trials in the time frames we expect or we may encounter delays. For example, in December
2020, we announced that the FDA had placed a clinical hold on our BPX-601 trial in pancreatic cancer due to the death of a patient in the trial. Although
the FDA released the hold in January 2021, there can be no assurance that future patients deaths in this or any of our clinical trials will not trigger
additional clinical holds. As these product candidates are in early stages of development, we face significant uncertainty regarding how effective and safe
they will be in human patients and the results from preclinical studies, such as in vitro and in vivo studies, of BPX-601 and BPX-603 may not be indicative
of the results of clinical trials of these product candidates. For example, in October 2020, we announced that the first four pancreatic cancer patients treated
with BPX-601 followed by repeat rimiducid dosing showed evidence of rimiducid-mediated CAR-T cell activation but clinically meaningful efficacy as
measured by RECIST criteria was not observed. Preclinical and clinical data are often susceptible to varying interpretations and analyses, and many
companies that have believed their product candidates performed satisfactorily in preclinical studies and clinical trials have nonetheless failed to obtain
marketing approval for their products.

Even if clinical trials are successfully completed, the FDA or foreign regulatory authorities may not interpret the results as we do, and more clinical trials
could be required before we submit our product candidates for approval. To the extent that the results of our clinical trials are not satisfactory to the FDA or
foreign  regulatory  authorities  for  support  of  a  marketing  application,  approval  of  our  product  candidates  may  be  significantly  delayed,  or  we  may  be
required to expend significant additional resources, which may not be available to us, to conduct additional clinical trials in support of potential approval of
our product candidates.

We may not be successful in our efforts to use and expand our CID platform to build a pipeline of product candidates and develop marketable products.

We  believe  that  our  CID  platform,  which  serves  as  the  foundation  of  our  CaspaCIDe  and  GoCAR-T  technologies,  can  be  further  leveraged  to  discover
other novel technologies, therapeutic applications and market opportunities. We are at an early stage of development and our platform has not yet, and may
never  lead  to,  approved  or  marketable  products.  Even  if  we  are  successful  in  continuing  to  build  our  pipeline,  the  potential  product  candidates  that  we
identify may not be suitable for clinical development, including for reasons related to their harmful side effects, limited efficacy or other characteristics that
indicate that they are unlikely to be products that will receive marketing approval and achieve market acceptance. If we do not successfully develop and
commercialize product candidates based upon our technological approach, we may not be able to obtain product or partnership revenues in future periods,
which would adversely affect our business, prospects, financial condition and results of operations.

We  rely  and  will  continue  to  rely  on  third  parties  to  conduct  our  clinical  trials.  If  these  third  parties  do  not  successfully  carry  out  their  contractual
duties or meet expected deadlines, we may not be able to obtain regulatory approval of or commercialize our product candidates.

We depend and will continue to depend upon independent investigators and collaborators, such as universities, medical institutions, and strategic partners
to conduct our preclinical and clinical trials under agreements with us. Negotiations of budgets and contracts with study sites may result in delays to our
development timelines and increased costs. We will rely heavily on these third parties over the course of our clinical trials, and we control only certain
aspects of their activities. Nevertheless, we are responsible for ensuring that each of our studies is conducted in accordance with applicable protocol, legal,
regulatory and scientific standards, and our reliance on third parties does not relieve us of our regulatory responsibilities. We and these third parties are
required to comply with good clinical practices, or GCPs, which are regulations and guidelines enforced by the FDA and comparable foreign regulatory
authorities for product candidates in clinical development. Regulatory authorities enforce these GCPs through periodic inspections of clinical trial sponsors,
principal investigators and clinical trial sites. If we or any of these third parties fail to comply with applicable GCP regulations, the clinical data generated
in our clinical trials may be deemed unreliable and the FDA or comparable foreign regulatory authorities could require us to perform additional clinical
trials before approving our marketing applications. It is possible that, upon inspection, such regulatory authorities could determine that any of our clinical
trials  fail  to  comply  with  the  GCP  regulations.  In  addition,  our  clinical  trials  must  be  conducted  with  biologic  product  produced  under  current  good
manufacturing practices, or cGMPs, and will require a large number of test patients. Our failure or any failure by these third parties to comply with these
regulations or to recruit a sufficient number of patients may require us to repeat clinical trials, which

25

Table of Contents

would delay the regulatory approval process. Moreover, our business may be implicated if any of these third parties violates federal or state fraud and abuse
or false claims laws and regulations or healthcare privacy and security laws.

Any third parties conducting our clinical trials are and will not be our employees and, except for remedies available to us under our agreements with these
third parties, we cannot control whether they devote sufficient time and resources to our ongoing preclinical, clinical and nonclinical programs. These third
parties may also have relationships with other commercial entities, including our competitors, for whom they may also be conducting clinical trials or other
drug development activities, which could affect their performance on our behalf. If these third parties do not successfully carry out their contractual duties
or obligations or meet expected deadlines, if they need to be replaced or if the quality or accuracy of the clinical data they obtain is compromised due to the
failure to adhere to our clinical protocols or regulatory requirements or for other reasons, our clinical trials may be extended, delayed or terminated and we
may not be able to complete development of, obtain regulatory approval of or successfully commercialize our product candidates. As a result, our financial
results and the commercial prospects for our product candidates would be harmed, our costs could increase and our ability to generate revenue could be
delayed.

Switching or adding third parties to conduct our clinical trials involves substantial cost and requires extensive management time and focus. In addition,
there is a natural transition period when a new third party commences work. As a result, delays occur, which can materially impact our ability to meet our
desired clinical development timelines.

Also, we are conducting clinical trials in Europe and may plan additional testing of our technology and product candidates in other foreign jurisdictions.
We currently have limited staffing and capabilities in foreign countries and may not be able to effectively resolve potential disputes with our independent
investigators and collaborators.

Our  business  could  be  adversely  affected  by  the  effects  of  health  epidemics,  including  the  recent  COVID-19  outbreak,  as  well  as  the  business  or
operations of our research partners, customers and other third parties with whom we conduct business.

Our business could be adversely affected by health epidemics in regions in which we have operations or conduct research activities or clinical trials. Such
health epidemics could also affect the business or operations of contract manufacturers, raw material suppliers, clinical trial sites, and other third parties
with whom we conduct business.

For example, in response to public health directives and orders related to the COVID-19 pandemic, we have implemented work-from-home policies for
certain  employees  and  temporarily  modified  our  research  operations  to  comply  with  applicable  social  distancing  recommendations.  The  effects  of
government stay-at-home orders and our related adjustments in our business is likely to negatively impact productivity, disrupt our business and delay our
timelines, the magnitude of which will depend, in part, on the length and severity of the restrictions and other limitations on our ability to conduct our
business in the ordinary course.

Severe  and/or  long-term  disruptions  in  our  operations  will  negatively  impact  our  business,  operating  results  and  financial  condition.  Specifically,  we
anticipate that the stress of COVID-19 on healthcare systems around the globe may harm our ability to conduct clinical trials in the near term due primarily
to the lack of resources at clinical trial sites and the resulting inability to enroll patients in the trials. If patients drop out of our trials, miss scheduled doses
or follow-up visits, be unable to undergo specific study procedures such as biopsies, or otherwise fail to follow trial protocols, or if our trials are otherwise
disrupted due to COVID-19 or actions taken to slow its spread, the integrity of data from our trials may be compromised or not accepted by the FDA or
other  regulatory  authorities,  which  would  represent  a  significant  setback  for  the  applicable  program.  To  date,  we  have  experienced  COVID-19-related
impacts  on  screening  and  enrollment  which  may  impact  the  speed  of  enrollment  and  the  timing  of  data  presentations  from  our  ongoing  studies.  More
significant disruptions may occur if the pandemic worsens in the geographies in which our study sites or manufacturing facilities are located. In addition,
quarantines, stay-at-home, executive and similar government orders, or the perception that such orders, shutdowns or other restrictions on the conduct of
business operations could occur, impact personnel at third-party manufacturing facilities in the United States and other countries, or the availability or cost
of materials, which would disrupt our supply chain. In fact, in April 2020 M.D. Anderson informed the Company of its decision to temporarily halt all
research  activity  in  order  to  reduce  the  spread  and  impact  of  COVID-19  on  their  institution  and  their  patients  and  this  includes  temporarily  suspending
activity  in  the  manufacturing  facility  in  which  the  product  candidates  for  our  clinical  development  programs  are  manufactured.  M.D.  Anderson
subsequently restarted manufacturing but if the pandemic worsens and they again suspend research activities, we may be unable to enroll patients in our
ongoing and planned clinical trials until manufacturing resumes at the facility.

The spread of COVID-19, which has caused a broad impact globally, may materially affect us economically. While the potential economic impact brought
by, and the duration of, COVID-19 may be difficult to assess or predict, it has significantly disrupted global financial markets, and may limit our ability to
access capital, which could in the future negatively affect our liquidity. A recession or market correction resulting from the spread of COVID-19 could
materially affect our business and the value of our common stock.

26

Table of Contents

The ultimate impact of the COVID-19 outbreak or a similar health epidemic is highly uncertain and subject to change. We do not yet know the full extent
of potential delays or impacts on our business, our clinical trials, healthcare systems or the global economy as a whole. However, the effects could have a
material  impact  on  our  operations,  and  we  will  continue  to  monitor  the  COVID-19  situation  closely.  In  addition,  to  the  extent  the  ongoing  COVID-19
outbreak adversely affects our business, financial condition, results of operations and growth prospects, it may also have the effect of heightening many of
the other risks and uncertainties described elsewhere in this “Risk Factors” section.

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

We may experience difficulties in patient enrollment in our clinical trials for a variety of reasons. The timely completion of clinical trials in accordance
with their protocols depends, among other things, on our ability to enroll a sufficient number of patients who remain in the study until its conclusion. The
enrollment of patients depends on many factors, including:

•

•

•

•

•

•

•

•

•

the patient eligibility criteria defined in the protocol;

the size of the patient population required for analysis of the trial’s primary endpoints;

the proximity of patients to study sites;

the design of the clinical trial;

our ability to recruit clinical trial investigators with the appropriate competencies and experience;

our ability to obtain and maintain patient consents;

the impact of the COVID-19 pandemic;

the risk that patients enrolled in clinical trials will drop out of the clinical trials before completion; and

competing clinical trials and approved therapies available for patients.

In particular, some of our clinical trials will look to enroll patients with characteristics which are found in a very small population, for example, patients
with rare cancers with specific attributes that are targeted with our product candidates. Our clinical trials will compete with other companies' clinical trials
for product candidates that are in the same therapeutic areas as our product candidates, and this competition will reduce the number and types of patients
available to us, because some patients who might have opted to enroll in our clinical trials may instead opt to enroll in a trial being conducted by one of our
competitors. Since the number of qualified clinical investigators is limited, we expect to conduct some of our clinical trials at the same clinical trial sites
that some of our competitors use, which will reduce the number of patients who are available for our clinical trials in these clinical trial sites. Moreover,
because our product candidates represent a departure from more commonly used methods for cancer treatment, potential patients and their doctors may be
inclined to use conventional therapies, such as chemotherapy and antibody therapy, rather than enroll patients in any of our future clinical trials. Patients
may also be unwilling to participate in our clinical trials because of negative publicity from adverse events in the biotechnology or gene therapy industries.

Delays  in  patient  enrollment  may  result  in  increased  costs  or  may  affect  the  timing  or  outcome  of  the  planned  clinical  trials,  which  could  prevent
completion of these clinical trials and adversely affect our ability to advance the development of our product candidates.

Any  adverse  developments  that  occur  during  any  clinical  trials  conducted  by  academic  investigators,  our  collaborators  or  other  entities  conducting
clinical trials under independent INDs may affect our ability to obtain regulatory approval or commercialize our product candidates.

Rimiducid and CaspaCIDe-containing cell therapy constructs are being used by third parties in clinical trials for which we are collaborating or in clinical
trials  which  are  completely  independent  of  our  development  programs.  We  have  little  to  no  control  over  the  conduct  of  those  clinical  trials.  If  serious
adverse events occur during these or any other clinical trials using our product candidates, the FDA and other regulatory authorities may delay, limit or
deny approval of our product candidate or require us to conduct additional clinical trials as a condition to marketing approval, which would increase our
costs.  If  we  receive  regulatory  approval  for  any  product  candidate  and  a  new  and  serious  safety  issue  is  identified  in  clinical  trials  conducted  by  third
parties, the applicable regulatory authorities may withdraw their approval of the product or otherwise restrict our ability to market and sell our product. In
addition,  treating  physicians  may  be  less  willing  to  administer  our  product  due  to  concerns  over  such  adverse  events,  which  would  limit  our  ability  to
commercialize our product.

27

Table of Contents

Adverse side effects or other safety risks associated with our product candidates could delay or preclude approval, cause us to suspend or discontinue
clinical trials, abandon product candidates, limit the commercial profile of an approved label, or result in significant negative consequences following
marketing approval, if any.

Adoptive cell therapy with autologous T cells is associated with a range of potentially severe immune-mediated adverse effects. In third party clinical trials
involving CAR-T cells, the most prominent acute toxicities included symptoms thought to be associated with the release of cytokines, such as fever, low
blood pressure and kidney dysfunction. Some patients also experienced toxicity of the central nervous system, such as confusion, cranial nerve dysfunction
and speech impairment. Adverse side effects attributed to CAR-T cells were severe and life-threatening in some patients. The life-threatening events were
related to kidney dysfunction and toxicities of the central nervous system. Severe and life-threatening toxicities occurred primarily in the first two weeks
after cell infusion and generally resolved within three weeks. In the past, several patients have also died in clinical trials by others involving CAR-T cells.

Undesirable side effects observed in our clinical trials, whether or not they are caused by our product candidates, could result in the delay, suspension or
termination of clinical trials by us, the FDA or other regulatory authorities for a number of reasons. In addition, because the patients in our clinical trials are
suffering from life-threatening diseases, are often suffering from multiple complicating conditions and, in the case of transplant patients, are in a position of
extreme immune deficiency at the time that they receive our therapy, it may be difficult to accurately assess the relationship between our product candidates
and adverse events experienced by very ill patients. If we elect or are required to delay, suspend or terminate any clinical trial of any product candidates
that  we  develop,  the  commercial  prospects  of  such  product  candidates  will  be  harmed  and  our  ability  to  generate  product  revenues  from  any  of  these
product  candidates  will  be  delayed  or  eliminated.  Serious  adverse  events  observed  in  clinical  trials  could  hinder  or  prevent  market  acceptance  of  the
product candidate at issue. Any of these occurrences may harm our business, prospects, financial condition and results of operations significantly.

Clinical trials are expensive, time-consuming and difficult to design and implement.

Human clinical trials are expensive and difficult to design and implement, in part because they are subject to rigorous regulatory requirements. Because our
product  candidates  are  based  on  relatively  new  technology,  we  expect  that  they  will  require  extensive  research  and  development  and  have  substantial
manufacturing and processing costs. Costs to treat patients with relapsed/refractory cancer and to treat potential side effects that may result from therapies
such as our current and future product candidates can be significant. Accordingly, our clinical trial costs are likely to be significantly higher than for more
conventional therapeutic technologies or drug products. In addition, our proposed product candidates involve several complex and costly manufacturing
and  processing  steps,  the  costs  of  which  will  be  borne  by  us.  The  costs  of  our  clinical  trials  may  increase  if  the  FDA  does  not  agree  with  our  clinical
development plans or requires us to conduct additional clinical trials to demonstrate the safety and efficacy of our product candidates.

We face significant competition from other biotechnology and pharmaceutical companies, and our operating results will suffer if we fail to compete
effectively.

The biopharmaceutical industry is characterized by intense competition and rapid innovation. Our competitors may be able to develop other compounds or
drugs  that  are  able  to  achieve  similar  or  better  results.  Our  potential  competitors  include  major  multinational  pharmaceutical  companies,  established
biotechnology companies, specialty pharmaceutical companies and universities and other research institutions. Many of our competitors have substantially
greater financial, technical and other resources, such as larger research and development staff and experienced marketing and manufacturing organizations
and  well-established  sales  forces.  Smaller  or  early-stage  companies  may  also  prove  to  be  significant  competitors,  particularly  through  collaborative
arrangements  with  large,  established  companies.  Mergers  and  acquisitions  in  the  biotechnology  and  pharmaceutical  industries  may  result  in  even  more
resources being concentrated in our competitors. Competition may increase further as a result of advances in the commercial applicability of technologies
and  greater  availability  of  capital  for  investment  in  these  industries.  Our  competitors,  either  alone  or  with  collaborative  partners,  may  succeed  in
developing, acquiring or licensing on an exclusive basis drug or biologic products that are more effective, safer, more easily commercialized or less costly
than our product candidates or may develop proprietary technologies or secure patent protection that we may need for the development of our technologies
and products. We believe the key competitive factors that will affect the development and commercial success of our product candidates are efficacy, safety,
tolerability, reliability, convenience of use, price and reimbursement.

Specifically, genetically engineering T cells is a competitive endeavor. Multiple companies are engaged in the engineering of T cells, including (but not
limited  to),  Adaptimmune,  Allogene  Therapeutics,  Inc.,  Amgen  Inc.,  Atara  Biotherapeutics,  Inc.,  Autolus  Therapeutics  plc,  bluebird  bio,  Inc.,  Bristol-
Meyer Squibb Co., Cellectis SA, Celyad S.A., Fate Therapeutics Inc., GlaxoSmithKline plc, Gilead Sciences, Inc., Iovance Biotherapeutics, Inc., Janssen
Pharmaceutical,  Kuur  Therapeutics,  Legend  Biotech,  Lyell  Immunopharma,  Inc.,  Medigene  AG,  MolMed  S.p.A.,  Mustang  Bio,  Inc.,  Novartis  AG,
Obsidian  Therapeutics,  Poseida  Therapeutics,  Precision  Biosciences,  Inc.,  Sorrento  Therapeutics,  Inc.,  Takeda  Pharmaceutical  Co,  and  Ziopharm
Oncology.

28

Table of Contents

Even if we obtain regulatory approval of our product candidates, the availability and price of our competitors’ products could limit the demand and the
price we are able to charge for our product candidates. We may not be able to implement our business plan if the acceptance of our product candidates is
inhibited  by  price  competition  or  the  reluctance  of  physicians  to  switch  from  existing  methods  of  treatment  to  our  product  candidates,  or  if  physicians
switch  to  other  new  drug  or  biologic  products  or  choose  to  reserve  our  product  candidates  for  use  in  limited  circumstances.  For  additional  information
regarding our competition, see “Item 1. Business Competition” under Part I of our Annual Report.

We are highly dependent on our key personnel, and if we are not successful in attracting and retaining highly qualified personnel, we may not be able
to successfully implement our business strategy. Workforce and expense reductions may have an adverse impact on our internal programs, our ability
to hire and retain key personnel and may be distracting to management.

Our ability to compete in the highly competitive biotechnology and pharmaceutical industries depends upon our ability to attract and retain highly qualified
managerial, scientific and medical personnel. We are highly dependent on our management, scientific and medical personnel. The loss of the services of
any of our executive officers, other key employees, and other scientific and medical advisors, and our inability to find suitable replacements could result in
delays in product development and harm our business.

Pursuant to our restructuring plan announced in October 2020, we have reduced our staff to 10 employees as of March 19, 2021. This reduction in our staff
included our Chief Financial Officer, our Chief Legal and Strategy Officer and various scientific personnel. Depending on our need for additional funding
and expense control, we may be required to implement further workforce and expense reductions in the future. Further workforce and expense reductions
may not result in efficiencies and anticipated savings and could result in reduced progress on our internal programs. In addition, employees, whether or not
directly affected by a reduction, may seek future employment with our business partners or competitors. Although our employees are required to sign a
confidentiality agreement at the time of hire, the confidentiality of certain proprietary information and knowledge may not be maintained in the course of
any  such  future  employment.  Further,  we  believe  that  our  future  success  will  depend  in  large  part  upon  our  ability  to  attract  and  retain  highly  skilled
personnel. We may have difficulty retaining and attracting such personnel as a result of a perceived risk of future workforce and expense reductions. In
addition,  the  implementation  of  expense  reduction  programs  may  result  in  the  diversion  of  efforts  of  our  executive  management  team  and  other  key
employees, which could adversely affect our business.

To induce valuable employees to remain at our company, in addition to salary and cash incentives, we have provided stock options and restricted stock
units, or RSUs, that vest over time. The value to employees of stock options and RSUs that vest over time may be significantly affected by movements in
our stock price that are beyond our control and may at any time be insufficient to counteract more lucrative offers from other companies. Despite our efforts
to retain valuable employees, members of our management, scientific and development teams may terminate their employment with us on short notice.
Although we have employment agreements with our key employees, these employment agreements provide for at-will employment, which means that any
of our employees could leave our employment at any time, with or without notice. We do not maintain “key man” insurance policies on the lives of these
individuals or the lives of any of our other employees. Our success also depends on our ability to continue to attract, retain and motivate highly skilled
scientific and medical personnel.

The terms of our 2019 private placement of equity restrict our operating and financial flexibility, and give priority to certain investors, both of which
could  significantly  harm  our  liquidity,  financial  condition,  operating  results,  business  and  prospects  and  cause  the  price  of  our  common  stock  to
decline.

In  August  2019,  we  completed  an  underwritten  public  offering  of  575,000  shares  of  Series  1  preferred  stock  and  warrants  to  purchase  up  to  5,750,000
shares  of  common  stock.  Concurrent  with  the  public  offering  we  entered  into  an  agreement  with  certain  institutional  investors  providing  for  a  private
placement, pursuant to which we agreed to sell at two or more separate closings, each at the option of the investors and subject to certain conditions, shares
of Series 2 preferred stock and warrants to purchase common stock, and shares of Series 3 preferred stock and warrants to purchase common stock, for
aggregate  gross  proceeds  of  up  to  $70.0  million.  Pursuant  to  the  terms  of  the  securities  purchase  agreement  for  the  private  placement  transaction,  the
investors in the private placement transaction have consent rights over certain significant matters of our business. These include decisions to authorize or
issue equity securities that are senior or pari passu to the Series 3 preferred stock with respect to liquidation preference, the occurrence of indebtedness in
excess of $1,000,000, the sale or license of certain of our technology and the payment of dividends. As a result, these stockholders, acting together, will
have  significant  influence  over  certain  matters  affecting  our  business.  The  investors  in  the  private  placement  may  not  exercise  their  rights  to  purchase
additional tranches of preferred stock and may not consent to us seeking additional funds through debt or other equity financings. In addition, potential
investors  in  the  Company  may  decline  to  do  so  because  of  the  preferential  rights  granted  under  the  private  placement  agreement.  Each  of  these  factors
could negatively impact our liquidity, financial condition, operating results, business and prospects and cause the price of our common stock to decline.

29

Table of Contents

We are reliant on a third party to manufacture our clinical product candidates and may not be able to secure adequate manufacturing capacity.

In April 2020, we announced the closing of the sale of our U.S. manufacturing facility to M.D. Anderson. When M.D. Anderson assumed ownership of the
facility,  we  became  reliant  on  M.D.  Anderson  to  supply  our  current  clinical  product  candidates.  We  have  endeavored  to  structure  the  transaction  in  a
manner that ensures availability of adequate capacity and priority access thereto for the continued clinical development of our product candidates. Given
the complexity of the manufacturing processes for cellular therapies, M.D. Anderson may be unable to effectively manufacture or release our products in
accordance with applicable cGMP standards, which could result in significant costs or delays to our programs.

We oversee a complex manufacturing supply chain of cellular therapy product candidates, viral vectors and small molecule drugs.

Because of the complex nature of our cell therapy products, we need to oversee the manufacture of multiple components that require a diverse knowledge
base and appropriate manufacturing personnel. The supply chain for these components is separate and distinct, and no single manufacturer can supply more
than one component of each of our products. Additionally, it is likely that the cell therapy products will need to be made within an appropriate geographic
location for the area in which the products will be utilized, so one cell therapy manufacturing facility may not be able to supply diverse geographic areas.
Any lack of capabilities to store, freeze, thaw and infuse our cell therapies would adversely affect our business and prospects.

Our autologous GoCAR-T product candidates, including BPX-601 and BPX-603 are manufactured on a patient-by-patient basis using each patient’s own
cells. Efficient manufacturing of these products relies upon our ability to sufficiently expand and activate the cells of patients who have undergone multiple
lines  of  prior  therapy,  often  including  immunosuppressive  chemotherapy.  Rimiducid,  the  small  molecule  drug  used  to  activate  both  our  iMC  and  iC9
switches,  is  a  complex  molecule  to  synthesize  and  is  relatively  insoluble  and  lipophilic,  rendering  it  difficult  to  formulate.  We  have  limited  internal
expertise in small molecule drug development and manufacturing, and we have identified specialty contract manufacturers to produce the rimiducid drug
substance and drug product. It is uncertain whether the drug substance and drug product manufacturers will be able to manufacture sufficient quantity and
quality of rimiducid to conduct the necessary non-clinical and clinical trials.

We have not yet caused our product candidates to be manufactured or processed on a commercial scale. We may not be able to scale patient-by-patient
manufacturing and processing to satisfy clinical or commercial demands for any of our product candidates. In addition, our anticipated reliance on a limited
number of third-party manufacturers for manufacturing exposes us to the following risks:

• We  may  be  unable  to  identify  manufacturers  on  acceptable  terms  or  at  all  because  the  number  of  potential  manufacturers  is  limited,  and  any
replacement  contractor  must  be  approved  by  regulatory  authorities.  This  approval  would  require  new  testing  and  compliance  inspections.  In
addition, a new manufacturer would have to be educated in, or develop substantially equivalent processes for, production of our products after
receipt of regulatory approval, if any.

• Our third-party manufacturers might be unable to timely formulate and manufacture our product or produce the quantity and quality required to

meet our clinical and commercial needs, if any.

• Our future contract manufacturers may not perform as agreed or may not remain in the contract manufacturing business for the time required to

supply our clinical trials or to successfully produce, store and distribute our products.

• Manufacturers are subject to ongoing periodic unannounced inspection by regulatory agencies to ensure strict compliance with cGMP and other
government regulations and standards. We do not have control over third-party manufacturers’ compliance with these regulations and standards.

• We  may  not  own,  or  may  have  to  share,  the  intellectual  property  rights  to  any  improvements  made  by  our  third-party  manufacturers  in  the

manufacturing process for our products.

• Our third-party manufacturers could breach or terminate their agreement with us.

Each of these risks could delay our clinical trials, the approval, if any of our product candidates or the commercialization of our product candidates or result
in higher costs or deprive us of potential product revenue. In addition, we will rely on third parties to perform release tests on our product candidates prior
to delivery to patients. If these tests are not appropriately done and test data are not reliable, patients could be put at risk of serious harm.

We  have  limited  information  available  regarding  the  ultimate  cost  of  our  products,  and  cannot  estimate  what  the  cost  of  our  products  will  be  upon
commercialization, should that occur.

We do not yet have sufficient information to reliably estimate the cost of the commercial manufacturing and processing of our product candidates, and the
actual cost to manufacture and process our product candidates could materially and adversely affect the commercial viability of our product candidates. As
a result, we may never be able to develop a commercially viable product.

30

Table of Contents

Because of the patient-specific nature of our manufacturing process, it is not amenable to traditional “scale up” to manufacture larger lots as is performed
for traditional drugs and biological agents.

Cell-based therapies rely on the availability of specialty raw materials, which may not be available to us on acceptable terms or at all.

Gene-modified  cell  therapy  manufacture  requires  many  specialty  raw  materials,  some  of  which  are  manufactured  by  small  companies  with  limited
resources and experience to support a commercial product. Some suppliers typically support biomedical researchers or blood-based hospital businesses and
may not have the capacity to support commercial products manufactured under cGMP by biopharmaceutical firms. The suppliers may be ill-equipped to
support our needs, especially in non-routine circumstances like an FDA inspection or medical crisis, such as widespread contamination. We also do not
have commercial supply arrangements with many of these suppliers and may not be able to contract with them on acceptable terms or at all. Accordingly,
we may experience delays in receiving key raw materials to support clinical or commercial manufacturing.

In addition, some raw materials are currently available from a single supplier, or a small number of suppliers. We cannot be sure that these suppliers will
remain in business, or that they will not be purchased by one of our competitors or another company that is not interested in continuing to produce these
materials for our intended purpose.

A variety of risks associated with marketing our product candidates internationally could materially adversely affect our business.

We  plan  to  seek  regulatory  approval  of  our  product  candidates  outside  of  the  U.S.  and,  accordingly,  we  will  be  subject  to  additional  risks  related  to
operating in foreign countries if we obtain the necessary approvals, including:

•

•

•

•

•

•

•

differing regulatory requirements in foreign countries;

unexpected changes in tariffs, trade barriers, price and exchange controls and other regulatory requirements;

economic weakness, including inflation, or political instability in particular foreign economies and markets;

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

foreign taxes, including withholding of payroll taxes;

foreign  currency  fluctuations,  which  could  result  in  increased  operating  expenses  and  reduced  revenue,  and  other  obligations  incident  to  doing
business in another country;

difficulties staffing and managing foreign operations;

• workforce uncertainty in countries where labor unrest is more common than in the U.S.;

•

•

•

•

•

potential liability under the FCPA or comparable foreign regulations;

challenges  enforcing  our  contractual  and  intellectual  property  rights,  especially  in  those  foreign  countries  that  do  not  respect  and  protect
intellectual property rights to the same extent as the U.S.;

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

differing payor reimbursement regimes, governmental payors or patient self-pay systems and price controls; and

business interruptions resulting from geo-political actions, including war and terrorism, and the impact of the COVID-19 pandemic;.

These and other risks associated with our international operations may materially adversely affect our ability to attain or maintain profitable operations.

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

We may form or seek strategic alliances, create joint ventures or collaborations and enter into additional licensing arrangements with third parties that we
believe  will  complement  or  augment  our  development  and  commercialization  efforts  with  respect  to  our  product  candidates  and  any  future  product
candidates  that  we  may  develop.  Any  of  these  relationships  may  require  us  to  incur  non-recurring  and  other  charges,  increase  our  near  and  long-term
expenditures, issue securities that dilute our existing stockholders or disrupt our management and business. In addition, we face significant competition in
seeking appropriate strategic partners and the negotiation process is time-consuming and complex. Moreover, we may not be successful in our efforts to
establish a strategic partnership or other alternative arrangements for our product candidates because they may be deemed to be at too early of a stage of
development  for  collaborative  effort  and  third  parties  may  not  view  our  product  candidates  as  having  the  requisite  potential  to  demonstrate  safety  and
efficacy. If we license products or businesses, we may not be able to realize the benefit of such transactions if we are unable to successfully integrate them
with our existing operations and company culture. It is possible that, following a

31

Table of Contents

strategic  transaction  or  license,  we  may  not  achieve  the  revenue  or  specific  net  income  that  justifies  such  transaction.  Any  delays  in  entering  into  new
strategic partnership agreements related to our product candidates could delay the development and commercialization of our product candidates in certain
geographies for certain indications, which would harm our business prospects, financial condition and results of operations.

If we are unable to identify a strategic partner for rivo-cel, we may not realize value from this asset and we will continue to incur substantial costs.

We are actively pursuing a strategic partner for our CaspaCIDe-containing polyclonal T cell product candidate called rivogenleceucel, or rivo-cel. A partner
would assume current and future development and commercialization responsibilities for this product candidate on a worldwide basis. Concurrently, we
have substantially reduced and will continue to reduce our rivo-cel-related activities and spending. For example, we have closed our UK office, which was
established  to  prepare  for  commercialization  in  Europe.  If  we  are  unable  to  identify  an  appropriate  strategic  partner  or  to  negotiate  and  consummate  a
license agreement with such a partner, it will be impossible to submit the planned Marketing Authorisation Applications, or MAA required to seek approval
to commercialize this product candidate in Europe. Such a delay in the process of preparing and submitting the MAA will make it more difficult for us or
any possible strategic partner to restart the process in the future and ultimately obtain approval for the product, increasing the likelihood that we may be
unable  to  derive  any  meaningful  revenue  from  this  asset.  In  addition,  we  are  obligated  to  continue  certain  regulatory  and  clinical  activities  following
conclusion of the rivo-cel clinical trials and if we are unable to identify a strategic partner, we will continue to incur the costs for the internal and external
resources required to complete those activities.

Our reliance on third parties requires us to share our trade secrets, which increases the possibility that a competitor will discover them or that our trade
secrets will be misappropriated or disclosed.

Because  we  rely  on  third  parties  to  manufacture  our  drug  substance  and  product,  and  because  we  collaborate  with  various  organizations  and  academic
institutions on the advancement of our technology platform, we must, at times, share trade secrets with them. We seek to protect our proprietary technology
in  part  by  entering  into  confidentiality  agreements  and,  if  applicable,  material  transfer  agreements,  collaborative  research  agreements,  consulting
agreements or other similar agreements with our collaborators, advisors, employees and consultants prior to beginning research or disclosing proprietary
information. These agreements typically limit the rights of the third parties to use or disclose our confidential information, such as trade secrets. Despite
these contractual provisions, the need to share trade secrets and other confidential information increases the risk that such trade secrets become known by
our  competitors,  are  inadvertently  incorporated  into  the  technology  of  others,  or  are  disclosed  or  used  in  violation  of  these  agreements.  Given  that  our
proprietary  position  is  based,  in  part,  on  our  know-how  and  trade  secrets,  a  competitor’s  discovery  of  our  trade  secrets  or  other  unauthorized  use  or
disclosure would impair our competitive position and may have a material adverse effect on our business.

We may use our financial and human resources to pursue a particular research program or product candidate and fail to capitalize on programs or
product candidates that may be more profitable or for which there is a greater likelihood of success.

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

We and our contractors utilize hazardous materials in our business operations, and any claims relating to improper handling, storage, or disposal of
these materials could harm our business.

Our activities involve the controlled use of potentially hazardous substances, including chemical and biological materials, by our third-party manufacturers.
Our manufacturers are subject to federal, state and local laws and regulations in the U.S. governing the use, manufacture, storage, handling and disposal of
medical  and  hazardous  materials,  and  similar  laws  in  other  geographic  regions.  Although  we  believe  that  our  manufacturers’  procedures  for  using,
handling, storing and disposing of these materials comply with legally prescribed standards, we cannot completely eliminate the risk of contamination or
injury resulting from medical or hazardous materials. As a result of any such contamination or injury, we may incur liability or local, city, state or federal
authorities may curtail the use of these materials and interrupt our business operations. In the event of an accident, we could be held liable for damages or
penalized with fines, and the liability could exceed our resources. We do not have any insurance for liabilities arising from medical or hazardous materials.
Compliance with applicable environmental laws and regulations is expensive, and current or future environmental regulations may impair our research,
development and production efforts, which could harm our business, prospects, financial condition or results of operations.

32

Table of Contents

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

Despite  the  implementation  of  security  measures,  our  internal  computer  systems  and  those  of  our  contractors  and  consultants  are  vulnerable  to  damage
from  computer  viruses  and  unauthorized  access.  While  we  have  not  experienced  any  such  material  system  failure  or  security  breach  to  date,  if  such  an
event  were  to  occur  and  cause  interruptions  in  our  operations,  it  could  result  in  a  material  disruption  of  our  development  programs  and  our  business
operations. For example, the loss of clinical trial data from completed or future clinical trials could result in delays in our regulatory approval efforts and
significantly increase our costs to recover or reproduce the data. To the extent that any disruption or security breach were to result in a loss of, or damage
to, our data or applications, or inappropriate disclosure of confidential or proprietary information, we could incur liability and the further development and
commercialization of our product candidates could be delayed.

System outages, network disruptions and cyber-security threats could interrupt the operation of our business.

We are dependent on the use of information technology systems for our operations. Outages, disruptions and threats could have an adverse impact on our
ability  to  conduct  operations.  Cyber-security  threats,  such  as  malware,  phishing  and  network  attacks,  are  on  the  rise.  These  attacks  can  affect  the
availability  of  our  information  technology  systems,  including  their  data,  as  well  as  the  confidentiality  and  integrity  of  these  systems.  A  security  breach
poses a risk to confidential data, including but not limited to intellectual property and trade secrets resulting in financial, legal or reputational harm to us.
Insider threats may exist if an individual authorized to access our technology systems improperly discloses sensitive data to unauthorized persons or the
public.  We  also  have  outsourced  elements  of  our  operations,  including  elements  of  our  information  technology  infrastructure,  and  thus  manage  several
independent  vendor  relationships  with  third  parties  who  may  have  access  to  our  confidential  information.  Confidentiality  agreements  are  in  place  for
authorized users and third parties to support the prevention of confidential information being improperly disclosed. We have policies and procedures in
place,  including  controls  around  the  access  and  activity  of  authorized  users,  active  system  monitoring,  back-up  and  recovery,  information  technology
security and mandatory annual information technology security awareness training to assist in the prevention and mitigation of an outage, disruption or
threat. In addition, we have invested in high availability, redundant technologies that will reduce the risk of an outage, disruption or threat. However, our
efforts may not prevent an outage, disruption or threat that would materially adversely affect us. We also may not have sufficient liability insurance, either
type or amount, to cover us against claims related to a cyber-security threat.

Business disruptions could seriously harm our future revenue and financial condition and increase our costs and expenses.

Our operations, and those of our clinical investigators, contractors and consultants, could be subject to power shortages, telecommunications failures, water
shortages,  floods,  earthquakes,  hurricanes,  typhoons,  fires,  extreme  weather  conditions,  medical  epidemics  and  other  natural  or  man-made  disasters  or
business  interruptions,  for  which  we  are  predominantly  self-insured.  The  occurrence  of  any  of  these  business  disruptions  could  seriously  harm  our
operations and financial condition and increase our costs and expenses. We rely on third-party manufacturers to produce and process our product candidates
on a patient by patient basis. Our ability to obtain clinical supplies of our product candidates could be disrupted if the operations of these suppliers are
affected by a man-made or natural disaster or other business interruption. In particular, certain third-party manufacturers may be unable to comply with
their  contractual  obligations  to  us  due  to  disruptions  caused  by  COVID-19,  including  reduced  operations  or  headcount  reductions,  or  otherwise,  and  in
certain cases we may have limited recourse if the non-compliance is due to factors outside of the manufacturer’s control.

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

We are exposed to the risk of employee fraud or other illegal activity by our employees, independent contractors, consultants, commercial partners and
vendors. Misconduct by these parties could include intentional, reckless and/or negligent conduct that fails to: comply with the laws of the FDA and other
similar foreign regulatory bodies; provide true, complete and accurate information to the FDA and other similar foreign regulatory bodies, comply with
manufacturing standards we have established, comply with healthcare fraud and abuse laws in the U.S. and similar foreign fraudulent misconduct laws, or
report financial information or data accurately or to disclose unauthorized activities to us. If we obtain FDA approval of any of our product candidates and
begin  commercializing  those  products  in  the  U.S.,  our  potential  exposure  under  such  laws  will  increase  significantly,  and  our  costs  associated  with
compliance with such laws are also likely to increase. These laws may impact, among other things, our current activities with principal investigators and
research patients, as well as proposed and future sales, marketing and education programs. In particular, the promotion, sales and marketing of healthcare
items and services, as well as certain business arrangements in the healthcare industry, are subject to extensive laws designed to prevent fraud, kickbacks,
self-dealing and other abusive practices. These laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing and promotion,
structuring and commission(s), certain customer incentive programs and other business arrangements

33

Table of Contents

generally. Activities subject to these laws also involve the improper use of information obtained in the course of patient recruitment for clinical trials. The
laws that may affect our ability to operate include, but are not limited to:

•

•

•

the  federal  Anti-Kickback  Statute,  which  prohibits,  among  other  things,  knowingly  and  willfully  soliciting,  receiving,  offering  or  paying  any
remuneration (including any kickback, bribe, or rebate), directly or indirectly, overtly or covertly, in cash or in kind, to induce, or in return for,
either the referral of an individual for, or the purchase, lease, order or recommendation of any good, facility, item or service for which payment
may be made, in whole or in part, under a federal healthcare program, such as the Medicare and Medicaid programs;

federal  civil  and  criminal  false  claims  laws  and  civil  monetary  penalties  law,  which  prohibit,  among  other  things,  individuals  or  entities  from
knowingly presenting, or causing to be presented, claims for payment or approval from Medicare, Medicaid, or other third-party payors that are
false  or  fraudulent  or  knowingly  making  a  false  statement  to  improperly  avoid,  decrease  or  conceal  an  obligation  to  pay  money  to  the  federal
government;

the  federal  Health  Insurance  Portability  and  Accountability  Act  of  1996,  or  HIPAA,  which  created  new  federal  criminal  statutes  that  prohibit
knowingly and willfully executing, or attempting to execute, a scheme to defraud any healthcare benefit program or obtain, by means of false or
fraudulent  pretenses,  representations,  or  promises,  any  of  the  money  or  property  owned  by,  or  under  the  custody  or  control  of,  any  healthcare
benefit program, regardless of the payor (e.g., public or private) and knowingly and willfully falsifying, concealing or covering up by any trick or
device a material fact or making any materially false statements in connection with the delivery of, or payment for, healthcare benefits, items or
services relating to healthcare matters;

• HIPAA, as amended by the Health and Information Technology for Economic and Clinical Health Act of 2009, or HITECH, and their respective
implementing regulations, which impose requirements on certain covered healthcare providers, health plans, and healthcare clearinghouses as well
as  their  respective  business  associates  that  perform  services  for  them  that  involve  the  use,  or  disclosure  of,  individually  identifiable  health
information  and  their  covered  subcontractors,  relating  to  the  privacy,  security  and  transmission  of  individually  identifiable  health  information
without appropriate authorization;

•

•

•

the  federal  Physician  Payments  Sunshine  Act,  and  its  implementing  regulations,  which  requires  certain  manufacturers  of  drugs,  devices,
biologicals  and  medical  supplies  for  which  payment  is  available  under  Medicare,  Medicaid  or  the  Children’s  Health  Insurance  Program  (with
certain  exceptions)  to  report  annually  to  the  HHS,  information  related  to  payments  or  other  transfers  of  value  made  to  physicians  (defined  to
include doctors, dentists, optometrists, podiatrists and chiropractors) and teaching hospitals, as well as require certain manufacturers and group
purchasing organizations to report annually ownership and investment interests held by such physicians and their immediate family members, and
beginning in 2022, will require applicable manufacturers to report information regarding payments and other transfers of value provided in the
previous  year  to  physician  assistants,  nurse  practitioners,  clinical  nurse  specialists,  certified  registered  nurse  anesthetists,  anesthesiologist
assistants and certified nurse midwives:

federal  consumer  protection  and  unfair  competition  laws,  which  broadly  regulate  marketplace  activities  and  activities  that  potentially  harm
consumers; and

foreign  laws  that  govern  the  privacy  and  security  of  health  information  in  certain  circumstances,  many  of  which  differ  from  each  other  in
significant ways and often are not preempted by or are in conflict with HIPAA, including the European Union General Data Protection Regulation,
or the GDPR, which became effective on May 25, 2018, and which imposes privacy and security obligations on any entity that collects and/or
processes health data from individuals located in the European Union. Under the GDPR, fines of up to 20 million euros or up to 4% of the annual
global turnover of the infringer, whichever is greater, could be imposed for significant non-compliance. As well as complicating our compliance
efforts,  non-compliance  with  these  laws  could  result  in  penalties  or  significant  legal  liability.  The  GDPR  includes  more  stringent  operational
requirements for processors and controllers of personal data and creates additional rights for data subjects.

Additionally, we are subject to state and foreign equivalents of each of the U.S. healthcare laws described above, among others, some of which may be
broader in scope and may apply regardless of the payor.

We have adopted a code of business conduct and ethics, but it is not always possible to identify and deter employee misconduct, and the precautions we
take  to  detect  and  prevent  inappropriate  conduct  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 such laws or regulations. Efforts to ensure that
our business arrangements will comply with applicable healthcare laws may involve substantial costs. It is possible that governmental and enforcement
authorities will conclude that our business practices may not comply with current or future statutes, regulations or case law interpreting applicable fraud
and  abuse  or  other  healthcare  laws  and  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 civil,

34

Table of Contents

criminal and administrative penalties, damages, disgorgement, monetary fines, imprisonment, possible exclusion from participation in Medicare, Medicaid
and other federal healthcare programs, contractual damages, reputational harm, diminished profits and future earnings, additional reporting requirements
and/or oversight if we become subject to a corporate integrity agreement or similar agreement to resolve allegations of non-compliance with these laws,
and curtailment of our operations, any of which could adversely affect our ability to operate our business and our results of operations. In addition, the
approval  and  commercialization  of  any  of  our  product  candidates  outside  the  U.S.  will  also  subject  us  to  foreign  equivalents  of  the  healthcare  laws
mentioned above, among other foreign laws.

If product liability lawsuits are brought against us, we may incur substantial liabilities and may be required to limit commercialization of our product
candidates.

We  face  an  inherent  risk  of  product  liability  as  a  result  of  the  clinical  testing  of  our  product  candidates  and  will  face  an  even  greater  risk  if  we
commercialize  any  products.  We  may  be  sued  if  our  product  candidates  cause  or  are  perceived  to  cause  injury  or  are  found  to  be  otherwise  unsuitable
during clinical testing, manufacturing, marketing or sale. Any such product liability claims may include allegations of defects in manufacturing, defects in
design, a failure to warn of dangers inherent in the product, negligence, strict liability or a breach of warranties. For example, in May 2019, we were added
as an additional defendant in an ongoing civil tort lawsuit in federal court in Los Angeles, California. The complaint alleges claims for wrongful death,
negligence, breach of fiduciary duty, fraud, medical battery on decedent, medical battery on individual plaintiffs, products liability-failure to warn, breach
of express warranty and products liability design or manufacturing defect. Claims could also be asserted under state consumer protection acts. If we cannot
successfully defend ourselves against product liability claims, we may incur substantial liabilities or be required to limit or cease commercialization of our
product candidates. Even successful defense would require significant financial and management resources. Regardless of the merits or eventual outcome,
federal or state liability claims may result in:

•

•

decreased demand for our product candidates;

injury to our reputation;

• withdrawal of clinical trial participants;

•

•

•

•

•

•

•

•

•

initiation of investigations by regulators;

costs to defend the related litigation;

a diversion of management’s time and our resources;

substantial monetary awards to clinical trial participants or patients;

product recalls, withdrawals or labeling, marketing or promotional restrictions;

loss of revenue;

exhaustion of any available insurance and our capital resources;

the inability to commercialize any product candidate; and

a decline in our share price.

Our inability to obtain sufficient product liability insurance at an acceptable cost to protect against potential product liability claims could prevent or inhibit
the  commercialization  of  any  products  we  develop,  alone  or  with  corporate  collaborators.  We  currently  carry  product  liability  insurance  covering  our
clinical trials, with other coverage limits as appropriate for certain foreign jurisdictions. Although we maintain such insurance, our insurance policies may
have various exclusions, and we may be subject to a product liability claim for which we have no coverage. We may have to pay any amounts awarded by a
court or negotiated in a settlement that exceed our coverage limitations or that are not covered by our insurance, and we may not have, or be able to obtain,
sufficient capital to pay such amounts. Even if our agreements with any future corporate collaborators entitle us to indemnification against losses, such
indemnification may not be available or adequate should any claim arise.

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

On March 27, 2020, President Trump signed into law the Coronavirus Aid, Relief, and Economic Security Act, or CARES Act, which provides temporary
relief from certain aspects of the Tax Cuts and Jobs Act that had imposed limitations on the utilization of certain losses, interest expense deductions, and
minimum tax credits. We are currently in the process of assessing the tax-related provisions of the CARES Act and its potential impact on us.

As of December 31, 2020, we had aggregate U.S. net operating loss carryforwards of approximately $448.3 million, and aggregate U.S. federal and Texas
state research and development credits of approximately $12.5 million and $5.3 million, respectively. These net operating loss carryforwards could expire
unused and be unavailable to offset future income tax liabilities. Under the Tax Cuts and Jobs Act and Cares Act, federal net operating losses incurred in
taxable years ending after December 31, 2017 may be carried

35

Table of Contents

forward indefinitely, but the deductibility of federal net operating losses generated in tax years beginning after December 31, 2017 may be limited to 80%
of current year taxable income for years beginning on or after January 1, 2021. It is uncertain if and to what extent various states will conform to the Tax
Cuts  and  Jobs  Act.  In  addition,  under  Sections  382  and  383  of  the  Internal  Revenue  Code  of  1986,  as  amended,  and  corresponding  provisions  of  state
law, if a corporation undergoes an “ownership change” (which is generally defined as a greater than 50% change (by value) in its equity ownership over a
three-year  period),  the  corporation’s  ability  to  use  its  pre-change  net  operating  loss  carryforwards  and  other  pre-change  tax  attributes  to  offset  its  post-
change income or taxes may be limited. We may have experienced one or more ownership changes in the past, including with respect to our August 2019
public offering, and we may also experience additional ownership changes in the future as a result of subsequent shifts in our stock ownership, some of
which may be outside of our control. If an ownership change occurs and our ability to use our net operating loss carryforwards is materially limited, it
would harm our future operating results by effectively increasing our future tax obligations.

Risks Related to Government Regulation

The regulatory approval process is lengthy and time-consuming, and we may experience significant delays in the clinical development and regulatory
approval of our product candidates.

We have not previously submitted a BLA to the FDA, or similar approval filings to other foreign authorities. A BLA must include extensive preclinical and
clinical  data  and  supporting  information  to  establish  the  product  candidate’s  safety,  purity  and  potency  for  each  desired  indication.  It  must  also  include
significant information regarding the chemistry, manufacturing and controls for the product. We expect the novel nature of our product candidates to create
further challenges in obtaining regulatory approval. For example, FDA’s Office of Tissues and Advanced Therapies, or OTAT, has limited experience with
combination  products  that  include  a  small  molecule  component.  Approval  of  our  GoCAR-T  product  candidates,  will  likely  require  this  FDA  office  to
consult with other divisions of the FDA, which may result in further challenges in obtaining regulatory approval, including in developing final product
labeling.  The  regulatory  approval  pathway  for  our  product  candidates  may  be  uncertain,  complex,  expensive  and  lengthy,  and  approval  may  not  be
obtained.

We may also experience delays in completing planned clinical trials for a variety of reasons, including delays related to:

•

•

•

•

•

•

the availability of financial resources to commence and complete our planned clinical trials;

reaching agreement on acceptable terms with prospective clinical trial sites, the terms of which can be subject to extensive negotiation and may
vary significantly among different clinical trial sites;

recruiting suitable patients to participate in a clinical trial;

having patients complete a clinical trial or return for post-treatment follow-up;

clinical trial sites deviating from clinical trial protocol, failing to follow GCPs, or dropping out of a clinical trial;

adding new clinical trial sites; or

• manufacturing sufficient quantities of qualified materials under cGMPs and applying them on a subject by subject basis for use in clinical trials.

We could also encounter delays if physicians encounter unresolved ethical issues associated with enrolling patients in clinical trials of our product
candidates in lieu of prescribing existing treatments that have established safety and efficacy profiles. Further, a clinical trial may be suspended or
terminated by us, the IRBs for the institutions in which such clinical trials are being conducted, the Data Monitoring Committee for such clinical trial, or by
the FDA or other regulatory authorities due to a number of factors, including failure to conduct the clinical trial in accordance with regulatory requirements
or our clinical protocols, inspection of the clinical trial operations or clinical trial site by the FDA or other regulatory authorities resulting in the imposition
of a clinical hold, unforeseen safety issues or adverse side effects, failure to demonstrate a benefit from using a product candidate, changes in governmental
regulations or administrative actions or lack of adequate funding to continue the clinical trial. For example, in December 2020 we announced that the FDA
had placed a clinical hold on our BPX-601 trial in pancreatic cancer due to the death of a patient in the trial. Although the FDA released the hold in January
2021, there can be no assurance that future patients’ deaths in this or any of our clinical trials will not trigger additional clinical holds. If we experience
termination of, or delays in the completion of, any clinical trial of our product candidates, the commercial prospects for our product candidates will be
harmed, and our ability to generate product revenue will be delayed. In addition, any delays in completing our clinical trials will increase our costs, slow
down our product development and approval process and jeopardize our ability to commence product sales and generate revenue.

Many of the factors that cause, or lead to, a delay in the commencement or completion of clinical trials may ultimately lead to the denial of regulatory
approval of our product candidates.

36

Table of Contents

Obtaining and maintaining regulatory approval of our product candidates in one jurisdiction does not mean that we will be successful in obtaining
regulatory approval of our product candidates in other jurisdictions.

Obtaining and maintaining regulatory approval of our product candidates in one jurisdiction does not guarantee that we will be able to obtain or maintain
regulatory approval in any other jurisdiction, while a failure or delay in obtaining regulatory approval in one jurisdiction may have a negative effect on the
regulatory  approval  process  in  others.  Approval  procedures  vary  among  jurisdictions  and  can  involve  requirements  and  administrative  review  periods
different from, and greater than, those in the EU or U.S., including additional preclinical studies or clinical trials. Studies and clinical trials conducted in
one jurisdiction may not be accepted by regulatory authorities in other jurisdictions.

We may also submit marketing applications in other countries. Regulatory authorities in jurisdictions outside of the EU and U.S. have requirements for
approval  of  product  candidates  with  which  we  must  comply  prior  to  marketing  in  those  jurisdictions.  Obtaining  foreign  regulatory  approvals  and
compliance with foreign regulatory requirements could result in significant delays, difficulties and costs for us and could delay or prevent the introduction
of  our  products  in  certain  countries.  If  we  fail  to  comply  with  the  regulatory  requirements  in  international  markets  and/or  receive  applicable  marketing
approvals, our target market will be reduced and our ability to realize the full market potential of our product candidates will be harmed.

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

Any regulatory approvals that we receive for our product candidates will require surveillance to monitor the safety and efficacy of the product candidate.
The  FDA  may  also  require  a  Risk  Evaluation  and  Mitigation  Strategy,  or  REMS,  in  order  to  approve  our  product  candidates,  which  could  entail
requirements  for  a  medication  guide,  physician  communication  plans  or  additional  elements  to  ensure  safe  use,  such  as  restricted  distribution  methods,
patient registries and other risk minimization tools. In addition, if the FDA or a comparable foreign regulatory authority approves our product candidates,
the manufacturing processes, labeling, packaging, distribution, adverse event reporting, storage, advertising, promotion, import, export and recordkeeping
for our product candidates will be subject to extensive and ongoing regulatory requirements. These requirements include, among other things, submissions
of safety and other post-marketing information and reports, registration, as well as continued compliance with cGMPs and GCPs for any clinical trials that
we  conduct  post-approval.  Later  discovery  of  previously  unknown  problems  with  our  product  candidates,  including  adverse  events  of  unanticipated
severity or frequency, or with our third-party manufacturers or manufacturing processes, or failure to comply with regulatory requirements, may result in,
among other things:

•

•

•

•

•

•

restrictions on the marketing or manufacturing of our product candidates, withdrawal of the product from the market, or voluntary or mandatory
product recalls;

fines, warning letters or holds on clinical trials;

refusal by the FDA to approve pending applications or supplements to approved applications filed by us or suspension or revocation of license
approvals;

suspension or termination of manufacturing at one or more manufacturing facilities;

product seizure or detention, or refusal to permit the import or export of our product candidates; and

injunctions or the imposition of civil or criminal penalties.

The FDA’s and other regulatory authorities’ policies may change, and additional government regulations may be enacted that could prevent, limit or delay
regulatory  approval  of  our  product  candidates.  We  cannot  predict  the  likelihood,  nature  or  extent  of  government  regulation  that  may  arise  from  future
legislation or administrative action, either in the U.S. or abroad. If we are slow or unable to adapt to changes in existing requirements or the adoption of
new requirements or policies, or if we are not able to maintain regulatory compliance, we may lose any marketing approval that we may have obtained, and
we may not achieve or sustain profitability.

Foreign legislative changes may also affect our ability to commercialize our product candidates. Effective as of May 25, 2018, the GDPR imposes privacy
and  security  obligations  on  any  entity  that  collects  and/or  processes  personal  information  from  individuals  located  in  the  European  Union.  Under  the
GDPR, fines of up to 20 million euros or up to 4% of the annual global turnover of the infringer, whichever is greater, could be imposed for significant
non-compliance.

37

Table of Contents

Even if we obtain regulatory approval of our product candidates, the products may not gain market acceptance among physicians, patients, hospitals,
cancer treatment centers, third-party payors and others in the medical community.

The  use  of  engineered  T  cells  as  potential  cancer  treatments  is  a  recent  development  and  may  not  become  broadly  accepted  by  physicians,  patients,
hospitals, cancer treatment centers, third-party payors and others in the medical community. Many factors will influence whether our product candidates are
accepted in the market, including:

•

•

•

•

•

•

•

•

•

•

•

•

•

•

the clinical indications for which our product candidates are approved;

physicians, hospitals, cancer treatment centers and patients considering our product candidates as a safe and effective treatment;

the potential and perceived advantages of our product candidates over alternative treatments;

the prevalence and severity of any side effects;

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

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

the extent and quality of the clinical evidence supporting the efficacy and safety of our product candidates;

the timing of market introduction of our product candidates as well as competitive products;

the cost of treatment in relation to alternative treatments;

the pricing of our product candidates and the availability of adequate reimbursement by third-party payors and government authorities;

the willingness and ability of patients to pay out-of-pocket in the absence of coverage by third-party payors, including government authorities;

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

confusion or lack of understanding regarding the effects of rimiducid and the timing and size of dosing of rimiducid after immune cell therapy;
and

the effectiveness of our sales and marketing efforts.

In  addition,  although  we  are  not  utilizing  embryonic  stem  cells  or  replication  competent  vectors,  adverse  publicity  due  to  the  ethical  and  social
controversies surrounding the therapeutic use of such technologies, and reported side effects from any clinical trials using these technologies or the failure
of  such  clinical  trials  to  demonstrate  that  these  therapies  are  safe  and  effective  may  limit  market  acceptance  our  product  candidates.  If  our  product
candidates  are  approved  but  fail  to  achieve  market  acceptance  among  physicians,  patients,  hospitals,  cancer  treatment  centers  or  others  in  the  medical
community, we will not be able to generate significant revenue.

Even if our products achieve market acceptance, we may not be able to maintain that market acceptance over time if new products or technologies are
introduced that are more favorably received than our products, are more cost effective or render our products obsolete.

Coverage and reimbursement may be limited or unavailable in certain market segments for our product candidates, which could make it difficult for us
to sell our product candidates profitably.

Market acceptance and sales of our product candidates will depend in large part on global reimbursement policies and may be affected by future healthcare
reform measures, both in the United States and other key international markets. Patients who are prescribed medicine for the treatment of their conditions
generally rely on third-party payors to reimburse all or part of the costs associated with their prescription drugs. Patients are unlikely to use our products
unless  coverage  is  provided  and  reimbursement  is  adequate  to  cover  a  significant  portion  of  the  cost  of  our  products.  Therefore,  successful
commercialization of our products will depend in part on the availability of governmental and third-party payor reimbursement for the cost of our product
candidates  and/or  payment  to  the  physician  for  administering  our  product  candidates.  In  the  United  States,  no  uniform  policy  of  coverage  and
reimbursement for drug products exists among third-party payors. Therefore, coverage and reimbursement for drug products can differ significantly from
payor to payor. As a result, the coverage determination process is often a time-consuming and costly process that will require us to provide scientific and
clinical support for the use of our products to each payor separately, with no assurance that coverage and adequate reimbursement will be obtained. One
third-party payor’s decision to cover a particular medical product or service does not assure that other payors will also provide coverage for the medical
product or service, or to provide coverage at an adequate reimbursement rate. As a result, the coverage determination process will require us to provide
scientific and clinical support for the use of our products to each payor separately, with no assurance that adequate coverage and

38

Table of Contents

reimbursement  will  be  obtained.  Further,  a  third-party  payor’s  decision  to  provide  coverage  for  a  medical  product  or  service  does  not  imply  that  an
adequate reimbursement rate will be approved. The market for our product candidates will depend significantly on access to third-party payors’ formularies
or lists of treatments for which third-party payors provide coverage and reimbursement. Third party payors may also have difficulty in determining the
appropriate  coverage  of  our  product  candidates,  if  approved,  due  to  the  fact  that  they  are  combination  products  that  include  a  small  molecule  drug,
rimiducid.

Third-party payors establish coverage and reimbursement policies for new products, including our product candidates. In particular, in the United States,
private health insurers and other third-party payors often provide reimbursement for treatments based on the level at which the government (through the
Medicare or Medicaid programs) provides reimbursement for such treatments. In the United States, the EEA and other significant or potentially significant
markets  for  our  product  candidate,  government  authorities  and  third-party  payors  are  increasingly  attempting  to  limit  or  regulate  the  price  of  medical
products and services, particularly for new and innovative products and therapies, which has resulted in lower average selling prices. Further, the increased
emphasis on managed healthcare in the United States and on country and regional pricing and reimbursement controls in Canada and the EEA will put
additional pressure on product pricing, coverage, reimbursement and utilization, which may adversely affect our product sales and results of operations.
These  pressures  can  arise  from  policies  and  practices  of  managed  care  groups,  judicial  decisions  and  governmental  laws  and  regulations  related  to
Medicare, Medicaid and healthcare reform, coverage and reimbursement policies and pricing in general. Any reduction in reimbursement from Medicare or
other government programs may result in a similar reduction in payments from private payors.

In  March  2010,  the  Patient  Protection  and  Affordable  Care  Act,  as  amended  by  the  Health  Care  and  Education  Reconciliation  Act,  or  collectively,  the
PPACA,  became  law  in  the  United  States.  PPACA  substantially  changed  the  way  healthcare  is  financed  by  both  governmental  and  private  insurers  and
significantly  affects  the  pharmaceutical  industry.  Among  the  provisions  of  the  PPACA  of  greatest  importance  to  the  pharmaceutical  industry  are  the
following: (i) an annual, nondeductible fee on any entity that manufactures or imports certain branded prescription drugs and biologic agents, apportioned
among these entities according to their market share in certain government healthcare programs; (ii) an increase in the rebates a manufacturer must pay
under the Medicaid Drug Rebate Program to 23.1% and 13% of the average manufacturer price for branded and generic drugs, respectively; (iii) a new
Medicare  Part  D  coverage  gap  discount  program,  in  which  manufacturers  must  now  agree  to  offer  70%  point-of-sale  discounts  to  negotiated  prices  of
applicable brand drugs to eligible beneficiaries during their coverage gap period, as a condition for the manufacturer’s outpatient drugs to be covered under
Medicare  Part  D;  (iv)  extension  of  manufacturers’  Medicaid  rebate  liability  to  covered  drugs  dispensed  to  individuals  who  are  enrolled  in  Medicaid
managed care organizations; (v) expansion of eligibility criteria for Medicaid programs by, among other things, allowing states to offer Medicaid coverage
to  additional  individuals  with  income  at  or  below  133%  of  the  Federal  Poverty  Level,  thereby  potentially  increasing  manufacturers’  Medicaid  rebate
liability; (vi) expansion of the entities eligible for discounts under the Public Health Service pharmaceutical pricing program; (vii) expansion of health care
fraud  and  abuse  laws,  including  the  federal  civil  False  Claims  Act  and  the  Anti-Kickback  Statute,  new  government  investigative  powers,  and  enhanced
penalties  for  noncompliance;  and  (viii)  a  new  Patient-Centered  Outcomes  Research  Institute  to  oversee,  identify  priorities  in,  and  conduct  comparative
clinical effectiveness research, along with funding for such research.

There have been executive judicial and Congressional challenges to other aspects of the PPACA. Concurrently, Congress has considered legislation that
would repeal or repeal and replace all or part of the PPACA. While Congress has not passed comprehensive repeal legislation, several bills affecting the
implementation of certain taxes under the PPACA have been signed into law. For example, the Tax Cuts and Jobs Act of 2017, or Tax Act, includes a
provision repealing, effective January 1, 2019, the tax-based shared responsibility payment imposed by the PPACA 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”. Additionally, the 2020 federal
spending package permanently eliminated, effective January 1, 2020, the PPACA-mandated “Cadillac” tax on high-cost employer-sponsored health
coverage and medical device tax and, effective January 1, 2021, also eliminated the health insurer tax. On December 14, 2018, a Texas U.S. District Court
Judge ruled that the PPACA 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 PPACA are invalid as well. The
U.S. Supreme Court is currently reviewing the case, although it is unknown when a decision will be made. Further, although the U.S. Supreme Court has
not yet ruled on the constitutionality of the PPACA, on January 28, 2021, President Biden issued an executive order to initiate a special enrollment period
from February 15, 2021 through May 15, 2021 for purposes of obtaining health insurance coverage through the PPACA marketplace. The executive order
also instructs certain governmental agencies to review and reconsider their existing policies and rules that limit access to healthcare, including among
others, reexamining Medicaid demonstration projects and waiver programs that include work requirements, and policies that create unnecessary barriers to
obtaining access to health insurance coverage through Medicaid or the PPACA. It is unclear how the Supreme Court ruling, other such litigation, and the
healthcare reform measures of the Biden administration will impact the PPACA and our business.

39

Table of Contents

In addition, other legislative changes have been proposed and adopted in the United States since the PPACA was enacted. For example, through the process
created by the Budget Control Act of 2011, there are automatic reductions of Medicare payments to providers up to 2% per fiscal year, which went into
effect in April 2013 and, following passage of the Bipartisan Budget Act of 2018, will remain in effect through 2030 with the exception of a temporary
suspension from May 1, 2020 through March 31, 2021 unless additional Congressional action is taken. In January 2013, President Obama signed into law
the American Taxpayer Relief Act of 2012, which, among other things, further reduced Medicare payments to several providers.

Further, recently there has been heightened governmental scrutiny in the United States over the manner in which drug manufacturers set prices for their
marketed products, in light of the rising cost of prescription drugs and biologics. Such scrutiny has resulted in several recent congressional inquiries and
proposed federal 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. At the federal level, the Trump administration
used several means to propose or implement drug pricing reform, including through federal budget proposals, executive orders and policy initiatives. For
example, on July 24, 2020 and September 13, 2020, the Trump administration announced several executive orders related to prescription drug pricing that
seek to implement several of the administration’s proposals. As a result, the FDA released a final rule on September 24, 2020, effective November 30,
2020, providing guidance for states to build and submit importation plans for drugs from Canada. Further, on November 20, 2020, HHS finalized a
regulation removing safe harbor protection for price reductions from pharmaceutical manufacturers to plan sponsors under Medicare Part D, either directly
or through pharmacy benefit managers, unless the price reduction is required by law. The implementation of the rule has been delayed by the Biden
administration from January 1, 2022 to January 1, 2023 in response to ongoing litigation. The rule also creates a new safe harbor for price reductions
reflected at the point-of-sale, as well as a new safe harbor for certain fixed fee arrangements between pharmacy benefit managers and manufacturers, the
implementation of which have also been delayed pending review by the Biden administration until March 22, 2021. On November 20, 2020, CMS issued
an interim final rule implementing the Trump administration’s Most Favored Nation executive order, which would tie Medicare Part B payments for certain
physician-administered drugs to the lowest price paid in other economically advanced countries, effective January 1, 2021. On December 28, 2020, the
U.S. District Court in Northern California issued a nationwide preliminary injunction against implementation of the interim final rule. It is unclear whether
the Biden administration will work to reverse these measures or pursue similar policy initiatives. At the state level, legislatures are increasingly passing
legislation and implementing regulations designed to control pharmaceutical and biological product pricing, including price or patient reimbursement
constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to
encourage importation from other countries and bulk purchasing. We expect that additional federal and state healthcare reform measures will be adopted in
the future, any of which could result in reduced demand for our products or other adverse effects on our business. For example, it is possible that additional
governmental action is taken to address the COVID-19 pandemic.

We  expect  that  additional  federal  and  state  healthcare  reform  measures,  such  as  further  amendments  and  changes  to  the  PPACA  will  be  adopted  in  the
future, any of which could result in reduced demand for our products or other adverse effects on our business.

Certain countries have a very difficult reimbursement environment and we may not obtain reimbursement or pricing approval, if required, in all countries
where we expect to market a product, or we may obtain reimbursement approval at a level that would make marketing a product in certain countries not
viable.

We expect to experience pricing pressures in connection with the sale of any products that we may develop, due to the trend toward managed healthcare,
the increasing influence of health maintenance organizations and additional legislative proposals. If we fail to successfully secure and maintain adequate
coverage and reimbursement for our products or are significantly delayed in doing so, we will have difficulty achieving market acceptance of our products
and expected revenue and profitability which would have a material adverse effect on our business, prospects, financial condition and results of operations.

Due  to  the  novel  nature  of  our  technology  and  the  small  size  of  our  target  patient  populations,  we  face  uncertainty  related  to  pricing  and
reimbursement for these product candidates.

Our target patient populations for our potential product candidates are relatively small, as a result, the pricing and reimbursement of our product candidates,
if approved, must be adequate to support commercial and manufacturing infrastructure. If we are unable to obtain adequate levels of reimbursement, our
ability to successfully market and sell our product candidates will be adversely affected. The manner and level at which reimbursement is provided for
services  related  to  our  product  candidates,  for  example,  reimbursement  for  administration  of  our  product  candidates  to  patients,  is  also  important.
Inadequate reimbursement for such services may lead to physician resistance and adversely affect our ability to market or sell our products.

We are subject to extensive laws and regulations related to data privacy, and our failure to comply with these laws and regulations could harm our
business.

40

Table of Contents

We  are  subject  to  laws  and  regulations  governing  data  privacy  and  the  protection  of  personal  information.  These  laws  and  regulations  govern  our
processing  of  personal  data,  including  the  collection,  access,  use,  analysis,  modification,  storage,  transfer,  security  breach  notification,  destruction  and
disposal of personal data. There are foreign and state law versions of these laws and regulations to which we are currently and/or may in the future, be
subject. For example, the collection and use of personal health data in the European Union is governed by the GDPR. The GDPR, which is wide-ranging in
scope,  imposes  several  requirements  relating  to  the  consent  of  the  individuals  to  whom  the  personal  data  relates,  the  information  provided  to  the
individuals,  the  security  and  confidentiality  of  the  personal  data,  data  breach  notification  and  the  use  of  third-party  processors  in  connection  with  the
processing of personal data. The GDPR also imposes strict rules on the transfer of personal data out of the European Union to the United States, provides
an enforcement authority and imposes large monetary penalties for noncompliance. The GDPR requirements apply not only to third-party transactions, but
also to transfers of information within our company, including employee information. The GDPR and similar data privacy laws of other jurisdictions place
significant responsibilities on us and create potential liability in relation to personal data that we or our third-party service providers process, including in
clinical trials conducted in the United States and European Union. In addition, 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 European Union and other jurisdictions, and we cannot determine the
impact such future laws, regulations and standards may have on our business.

Additionally,  California  recently  enacted  legislation  that  has  been  dubbed  the  first  “GDPR-like”  law  in  the  United  States.  Known  as  the  California
Consumer  Privacy  Act,  or  the  CCPA,  it  creates  new  individual  privacy  rights  for  consumers  (as  that  word  is  broadly  defined  in  the  law)  and  places
increased  privacy  and  security  obligations  on  entities  handling  personal  data  of  consumers  or  households. As  of  January  1,  2020,  the  CCPA  requires
covered  companies  to  provide  new  disclosures  to  California  consumers,  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. As currently written, the CCPA will likely impact (possibly significantly) 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
and protected health information.

We are subject to certain U.S. and foreign anti-corruption, anti-money laundering, export control, sanctions, and other trade laws and regulations, or
collectively, Trade Laws.  We can face serious consequences for violations.

Among other matters, Trade Laws prohibit companies and their employees, agents, clinical research organizations, legal counsel, accountants, consultants,
contractors, and other partners from authorizing, promising, offering, providing, soliciting, or receiving directly or indirectly, corrupt or improper payments
or anything else of value to or from recipients in the public or private sector.  Violations of Trade Laws can result in substantial criminal fines and civil
penalties,  imprisonment,  the  loss  of  trade  privileges,  debarment,  tax  reassessments,  breach  of  contract  and  fraud  litigation,  reputational  harm,  and  other
consequences.  We have direct or indirect interactions with officials and employees of government agencies or government-affiliated hospitals, universities,
and other organizations. We engage third parties for clinical trials and/or to obtain necessary permits, licenses, patent registrations, and other regulatory
approvals.  We  also  expect  our  non-U.S.  activities  to  increase  in  time.  We  can  be  held  liable  for  the  corrupt  or  other  illegal  activities  of  our  personnel,
agents, or partners, even if we do not explicitly authorize or have prior knowledge of such activities.

We are subject to U.S. and certain foreign export and import controls, sanctions, embargoes, anti-corruption laws, and anti-money laundering laws and
regulations.  Compliance with these legal standards could impair our ability to compete in domestic and international markets.  We can face criminal
liability and other serious consequences for violations, which can harm our business.

We are subject to export control and import laws and regulations, including the U.S. Export Administration Regulations, U.S. Customs regulations, various
economic  and  trade  sanctions  regulations  administered  by  the  U.S.  Treasury  Department’s  Office  of  Foreign  Assets  Controls,  the  U.S.  Foreign  Corrupt
Practices Act of 1977, as amended, or FCPA, the U.S. domestic bribery statute contained in 18 U.S.C. § 201, the U.S. Travel Act, the USA PATRIOT Act,
and  other  state  and  national  anti-bribery  and  anti-money  laundering  laws  in  the  countries  in  which  we  conduct  activities.    Anti-corruption  laws  are
interpreted  broadly  and  prohibit  companies  and  their  employees,  agents,  contractors,  and  other  collaborators  from  authorizing,  promising,  offering,  or
providing, directly or indirectly, improper payments or anything else of value to recipients in the public or private sector.  We may engage third parties for
clinical  trials  outside  of  the  United  States,  to  sell  our  products  abroad  once  we  enter  a  commercialization  phase,  and/or  to  obtain  necessary  permits,
licenses, patent registrations, and other regulatory approvals.  We have direct or indirect interactions with officials and employees of government agencies
or government-affiliated hospitals, universities, and other organizations.  We can be held liable for the corrupt or other illegal activities of our employees,
agents, contractors, and other collaborators, even if we do not explicitly authorize or have actual knowledge of such activities.  Any violations of the laws
and  regulations  described  above  may  result  in  substantial  civil  and  criminal  fines  and  penalties,  imprisonment,  the  loss  of  export  or  import  privileges,
debarment, tax reassessments, breach of contract and fraud litigation, reputational harm, and other consequences.

Changes  in  funding  for  the  FDA,  the  SEC  and  other  government  agencies  could  hinder  their  ability  to  hire  and  retain  key  leadership  and  other
personnel, prevent new products from being developed or commercialized in a timely manner or otherwise

41

Table of Contents

prevent  those  agencies  from  performing  normal  functions  on  which  the  operation  of  our  business  may  rely,  which  could  negatively  impact  our
business.

The ability of the FDA to review and approve new products can be affected by a variety of factors, including government budget and funding levels, ability
to hire and retain key personnel and accept payment of user fees, and statutory, regulatory, and policy changes. Average review times at the agency have
fluctuated  in  recent  years  as  a  result.  In  addition,  government  funding  of  the  SEC  and  other  government  agencies  on  which  our  operations  may  rely,
including those that fund research and development activities is subject to the political process, which is inherently fluid and unpredictable.

Disruptions  at  the  FDA  and  other  agencies  may  also  slow  the  time  necessary  for  new  drugs  to  be  reviewed  and/or  approved  by  necessary  government
agencies, which would adversely affect our business. For example, over the last several years, including beginning on December 22, 2018 and ending on
January 25, 2019, the U.S. government has shut down several times and certain regulatory agencies, such as the FDA and the SEC, have had to furlough
critical FDA, SEC and other government employees and stop critical activities. If repeated or prolonged government shutdowns occur, it could significantly
impact the ability of the FDA to timely review and process our regulatory submissions, which could have a material adverse effect on our business. Further,
future government shutdowns could impact our ability to access the public markets and obtain necessary capital in order to properly capitalize and continue
our operations.

Risks Related to Our Intellectual Property

We depend on intellectual property licensed from third parties and termination of any of these licenses could result in the loss of significant rights,
which would harm our business.

We are dependent on patents, know-how and proprietary technology, both our own and licensed from others. We license from Baylor College of Medicine,
or Baylor, certain intellectual property related to methods for activating antigen presenting cells, to certain genetic constructs and to certain methods for
inducing apoptosis. Baylor may terminate or modify our licenses in the event of a material breach by us that remains uncured following the date that is 90
days after written notice of such breach or upon certain insolvency events that remain uncured following the date that is 30 days following written notice of
such insolvency event. In addition, we have funded certain of our clinical development activities and may fund certain of our future clinical development
with funds from the State of Texas. The State of Texas may have rights to commercialize the results of those clinical trials if it determines that we have
failed,  after  notice  and  an  opportunity  to  cure,  to  use  diligent  and  commercially  reasonable  efforts  to  commercialize  or  otherwise  bring  to  practical
application the results of the funded clinical trials. We are also dependent on our license agreements with Agensys, Inc. (a subsidiary of Astellas Pharma,
Inc.) with respect to PSCA-targeted CARs, and BioVec Pharma Inc. with respect to making retrovirus for all of our programs. The termination of any of
these licenses could have a material adverse effect on our business.

Any termination of these agreements, or other agreements to which we are a party could result in the loss of significant rights and could harm our ability to
commercialize our product candidates.

Disputes may also arise between us and our licensors and other partners regarding intellectual property subject to a license agreement, including:

•

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

• whether and the extent to which our technology and processes infringe on intellectual property of the licensor that is not subject to the licensing

agreement;

•

•

•

our right to sublicense patent and other rights to third parties under collaborative development relationships;

our diligence obligations with respect to the use of the licensed technology in relation to our development and commercialization of our product
candidates, and what activities satisfy those diligence obligations; and

the  ownership  of  inventions  and  know-how  resulting  from  the  joint  creation  or  use  of  intellectual  property  by  our  licensors  and  us  and  our
partners.

If disputes over intellectual property that we have licensed prevent or impair our ability to maintain our current licensing arrangements on acceptable terms,
we may be unable to successfully develop and commercialize the affected product candidates.

We are generally also subject to all of the same risks with respect to protection of intellectual property that we license, as we are for intellectual property
that we own. If we or our licensors fail to adequately protect this intellectual property, our ability to commercialize products could suffer.

42

Table of Contents

If our efforts to protect the proprietary nature of our technologies are not adequate, we may not be able to compete effectively in our market.

Any disclosure to or misappropriation by third parties of our confidential proprietary information could enable competitors to quickly duplicate or surpass
our  technological  achievements,  thus  eroding  our  competitive  position  in  our  market.  Certain  intellectual  property  which  is  covered  by  our  in-license
agreements has been developed at academic institutions which have retained non-commercial rights to such intellectual property.

There are several pending U.S. and foreign patent applications in our portfolio, and we anticipate additional patent applications will be filed both in the
U.S. and in other countries, as appropriate. However, we cannot predict:

•

•

if and when patents will issue;

the degree and range of protection any issued patents will afford us against competitors including whether third parties will find ways to invalidate
or otherwise circumvent our patents;

• whether or not others will obtain patents claiming aspects similar to those covered by our patents and patent applications; or

• whether we will need to initiate litigation or administrative proceedings which may be costly whether we win or lose.

Composition of matter patents for biological and pharmaceutical products are generally considered to be the strongest form of intellectual property. We
cannot  be  certain  that  the  claims  in  our  pending  patent  applications  directed  to  compositions  of  matter  for  our  product  candidates  will  be  considered
patentable by the U.S. Patent and Trademark Office, or the USPTO, or by patent offices in foreign countries, or that the claims in any of our issued patents
will be considered valid by courts in the U.S. or foreign countries. Method of use patents have claims directed to the use of a product for the specified
method. This type of patent does not prevent a competitor from making and marketing a product that is identical to our product for an indication that is
outside the scope of the patented method. Moreover, even if competitors do not actively promote their product for our targeted indications, physicians may
prescribe these products “off-label.” Although off-label prescriptions may infringe or contribute to the infringement of method of use patents, the practice is
common and such infringement is difficult to prevent or prosecute.

The  strength  of  patents  in  the  biotechnology  and  pharmaceutical  field  involves  complex  legal  and  scientific  questions  and  can  be  uncertain.  The  patent
applications that we own or in-license may fail to result in issued patents with claims that cover our product candidates or uses thereof in the U.S. or in
other foreign countries. Even if the patents do successfully issue, third parties may challenge the validity, enforceability or scope thereof, which may result
in such patents being narrowed, invalidated or held unenforceable. Furthermore, even if they are unchallenged, patents in our portfolio may not adequately
exclude third parties from practicing relevant technology or prevent others from designing around our claims. If the breadth or strength of our intellectual
property position with respect to our product candidates is threatened, it could dissuade companies from collaborating with us to develop, and threaten our
ability to commercialize, our product candidates. Further, if we encounter delays in our clinical trials, the period of time during which we could market our
product candidates under patent protection would be reduced. Since patent applications in the U.S. and most other countries are confidential for a period of
time  after  filing,  it  is  possible  that  patent  applications  in  our  portfolio  may  not  be  the  first  filed  patent  applications  related  to  our  product  candidates.
Furthermore, for U.S. applications in which all claims are entitled to a priority date before March 16, 2013, an interference proceeding can be provoked by
a third-party or instituted by the USPTO, to determine who was the first to invent any of the subject matter covered by the patent claims of our applications.
For U.S. applications containing a claim not entitled to priority before March 16, 2013, there is a greater level of uncertainty in the patent law with the
passage of the America Invents Act (2012) which brings into effect significant changes to the U.S. patent laws that are yet untried and untested, and which
introduces new procedures for challenging pending patent applications and issued patents. A primary change under this reform is creating a “first to file”
system in the U.S. This will require us to be cognizant going forward of the time from invention to filing of a patent application.

We rely on trade secret protection and confidentiality agreements to protect proprietary know-how that is not patentable, processes for which patents are
difficult  to  enforce  and  any  other  elements  of  our  product  discovery  and  development  processes  that  involve  proprietary  know-how,  information,  or
technology that is not covered by patents. We require all of our employees to assign their inventions to us, and require all of our employees, consultants,
advisors and any third parties who have access to our proprietary know-how, information, or technology to enter into confidentiality agreements; however,
it is possible that our trade secrets and other confidential proprietary information could be disclosed or that competitors may otherwise gain access to our
trade secrets or independently develop substantially equivalent information and techniques. Furthermore, the laws of some foreign countries do not protect
proprietary rights to the same extent or in the same manner as the laws of the U.S. As a result, we may encounter significant problems in protecting and
defending our intellectual property both in the U.S. and abroad. If we are unable to prevent unauthorized material disclosure of our intellectual property to
third  parties,  we  will  not  be  able  to  establish  or  maintain  a  competitive  advantage  in  our  market,  which  could  materially  adversely  affect  our  business,
operating results and financial condition.

43

Table of Contents

Third-party claims of intellectual property infringement may prevent or delay our product discovery and development efforts.

Our commercial success depends in part on our avoiding infringement of the patents and proprietary rights of third parties. There is a substantial amount of
litigation involving patents and other intellectual property rights in the biotechnology and pharmaceutical industries, as well as administrative proceedings
for  challenging  patents,  including  interference  and  reexamination  proceedings  before  the  USPTO  or  oppositions  and  other  comparable  proceedings  in
foreign jurisdictions. Recently, under U.S. patent reform, new procedures including inter parties review and post grant review have been implemented. As
stated above, this reform is untried and untested and will bring uncertainty to the possibility of challenge to our patents in the future. Numerous U.S. and
foreign  issued  patents  and  pending  patent  applications,  which  are  owned  by  third  parties,  exist  in  the  fields  in  which  we  are  developing  our  product
candidates. As the biotechnology and pharmaceutical industries expand and more patents are issued, the risk increases that our product candidates may give
rise to claims of infringement of the patent rights of others.

Third  parties  may  assert  that  we  are  employing  their  proprietary  technology  without  authorization.  There  may  be  third-party  patents,  of  which  we  are
currently unaware or have not sufficiently analyzed with claims to materials, formulations, methods of manufacture or methods for treatment related to the
use or manufacture of our product candidates. Because patent applications can take many years to issue, there may be currently pending patent applications
which may later result in issued patents that our product candidates may infringe. In addition, third parties may obtain patents in the future and claim that
use  of  our  technologies  infringes  upon  these  patents.  If  any  third-party  patents  were  held  by  a  court  of  competent  jurisdiction  to  cover  aspects  of  our
formulations, the manufacturing process of our product candidates, constructs or molecules used in or formed during the manufacturing process, methods
of use, including combination therapy or patient selection methods or any final product itself, the holders of any such patents may be able to block our
ability to develop and commercialize the product candidate unless we obtained a license under the applicable patents, or until such patents expire or they
are finally determined to be held invalid or unenforceable. In either case, such a license may not be available on commercially reasonable terms or at all. If
we are unable to obtain a necessary license to a third-party patent on commercially reasonable terms, or at all, our ability to commercialize our product
candidates may be impaired or delayed, which could in turn significantly harm our business.

Parties making claims against us may seek and obtain injunctive or other equitable relief, which could effectively block our ability to further develop and
commercialize  our  product  candidates.  Defense  of  these  claims,  regardless  of  their  merit,  would  involve  substantial  litigation  expense  and  would  be  a
substantial  diversion  of  employee  resources  from  our  business.  In  the  event  of  a  successful  claim  of  infringement  against  us,  we  may  have  to  pay
substantial damages, including treble damages and attorneys’ fees for willful infringement, obtain one or more licenses from third parties, pay royalties or
redesign our infringing products, which may be impossible or require substantial time and monetary expenditure. It is possible that any such license would
not  be  available  at  all  or  on  commercially  reasonable  terms.  Furthermore,  even  in  the  absence  of  litigation,  we  may  need  to  obtain  licenses  from  third
parties to advance our research or allow commercialization of our product candidates. We may fail to obtain any of these licenses at a reasonable cost or on
reasonable terms, if at all. In that event, we would be unable to further develop and commercialize our product candidates, which could harm our business
significantly.

For example, we are aware of a third-party patent having claims directed to chimeric DNA comprising DNA segments encoding (1) a single chain antibody
domain and (2) transmembrane and cytoplasmic domains of an endogenous protein. Even though we have reason to believe that our product candidates are
not  covered  by  claims  of  this  patent,  an  owner  or  licensee  of  the  patent  still  might  bring  a  patent  infringement  suit  against  us.  If  the  patent  is  asserted
against us, we may not prevail in defending against claims of infringement and/or challenging the validity of claims in the patent. We may not successfully
develop alternative technologies or enter into an agreement by which we obtain rights to the patent. These rights, if necessary, may not be available on
terms acceptable to us.

We are aware of third-party patents having claims that may be considered as being directed to single-chain antibody fragments that bind to PSCA and these
patents may be considered relevant to BPX-601 and related technologies we are developing. We currently are evaluating whether or not we need to obtain
rights to these patents under a license, and if it is determined that we need to obtain such rights, whether these rights can be obtained. We are also aware of
third-party  patent  applications  having  claims  that  may  be  considered  as  being  directed  to  cellular  therapy  constructs  utilizing  a  heterodimer  domain  for
activation of caspase 9. We are monitoring these applications and if they are granted with the claims as drafted, they may be relevant to our potential dual-
switch product candidates containing such a heterodimer activation domain.

Also, while we are aware there are other third-party patents having claims that may be considered relevant to technologies for which we are seeking, or
plan to seek, regulatory approval, we believe those patents have a patent term that may expire prior to the time we expect to obtain regulatory approval for
these technologies. The estimated expiration dates for those patents were determined according to information on the face pages of the patents, and certain
factors that could influence patent term, such as patent term adjustment and patent term extension, for example, were not factored into these estimates.
Accordingly,  the  estimated  expiration  dates  of  those  patents  may  not  be  accurate  and  one  or  more  of  those  patents  may  not  expire  before  we  obtain
regulatory approval for an applicable technology. Owners or licensees of one or more of those patents may bring a patent infringement suit against us. If
one or more of those patents are asserted against us, we may be able to assert a defense for a safe harbor to patent infringement under 35 U.S.C. 271(e)(1) if
certain requirements are met. It is possible that (1) certain of these requirements may not

44

Table of Contents

be met, and/or (2) one or more of the third-party patents might expire after one or more of our technologies obtain regulatory approval, and consequently
we may not successfully assert such a defense to patent infringement. If we are unsuccessful in asserting a defense under 35 U.S.C. 271(e)(1), it is possible
we may not prevail in defending against claims of infringement and/or challenging the validity of claims in those patents. We may not successfully develop
alternative technologies or enter into agreements by which we obtain rights to applicable patents. These rights, if necessary, may not be available on terms
acceptable to us.

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

Because  our  programs  may  involve  additional  product  candidates  that  may  require  the  use  of  proprietary  rights  held  by  third  parties,  the  growth  of  our
business will likely depend in part on our ability to acquire, in-license or use these proprietary rights.

Our product candidates may also require specific formulations to work effectively and efficiently and these rights may be held by others. We may be unable
to acquire or in-license any compositions, methods of use, processes or other third-party intellectual property rights from third parties that we identify. Even
if we are able to obtain a license, it may be non-exclusive, thereby giving our competitors access to the same technologies licensed to us. In that event, we
may be required to expend significant time and resources to develop or license replacement technology.

The  licensing  and  acquisition  of  third-party  intellectual  property  rights  is  a  competitive  area,  and  companies,  which  may  be  more  established,  or  have
greater resources than we do, may also be pursuing strategies to license or acquire third-party intellectual property rights that we may consider necessary or
attractive in order to commercialize our product candidates. More established companies may have a competitive advantage over us due to their size, cash
resources and greater clinical development and commercialization capabilities.

We may not be able to successfully complete negotiations and ultimately acquire the rights to the intellectual property that we may seek to acquire in the
future.

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

Competitors may infringe our patents or the patents of our licensors. To counter infringement or unauthorized use, we may be required to file infringement
claims, which can be expensive and time-consuming. In addition, in an infringement proceeding, a court may decide that one or more of our patents is not
valid  or  is  unenforceable,  or  may  refuse  to  stop  the  other  party  from  using  the  technology  at  issue  on  the  grounds  that  our  patents  do  not  cover  the
technology in question. An adverse result in any litigation or defense proceedings could put one or more of our patents at risk of being invalidated, held
unenforceable, or interpreted narrowly and could put our patent applications at risk of not issuing. Defense of these claims, regardless of their merit, would
involve substantial litigation expense and would be a substantial diversion of employee resources from our business. It also is possible that a competitor we
sue for patent infringement could countersue us for allegedly infringing one or more of their own patents or one or more patents they licensed from another
entity. In the event of a successful claim of infringement against us, we may have to pay substantial damages, including treble damages and attorneys’ fees
for  willful  infringement,  obtain  one  or  more  licenses  from  third  parties,  pay  royalties  or  redesign  our  infringing  products,  which  may  be  impossible  or
require substantial time and monetary expenditure.

Interference proceedings provoked by third parties or brought by the USPTO may be necessary to determine the priority of inventions with respect to our
patents or patent applications or those of our licensors. An unfavorable outcome could result in a loss of our patent rights and could require us to cease
using the related technology or to attempt to license rights to it from the prevailing party. Our business could be harmed if the prevailing party does not
offer us a license on commercially reasonable terms. It also is possible that third parties could institute a patent office post-grant proceeding against one or
more  of  our  patents,  or  one  or  more  patents  licensed  to  us,  such  as  a  post  grant  review  proceeding,  inter  parties  review  proceeding  or  reexamination
proceeding at the USPTO, or an opposition proceeding in a jurisdiction outside the U.S. An unfavorable outcome in a post-grant proceeding could result in
a loss of our patent rights. Litigation, interference proceedings or patent office post-grant proceedings may result in a decision adverse to our interests and,
even if we are successful, may result in substantial costs and distract our management and other employees. We also may not be able to prevent, alone or
with our licensors, misappropriation of our trade secrets or confidential information, particularly in countries where the laws may not protect those rights as
fully as in the U.S.

Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our
confidential information could be compromised by disclosure during this type of litigation. In addition, there could be public announcements of the results
of hearings, motions or other interim proceedings or developments. If securities analysts or investors perceive these results to be negative, it could have a
substantial adverse effect on the price of our common stock.

45

Table of Contents

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

Periodic  maintenance  fees  on  any  issued  patent  are  due  to  be  paid  to  the  USPTO  and  foreign  patent  agencies  in  several  stages  over  the  lifetime  of  the
patent.  The  USPTO  and  various  foreign  governmental  patent  agencies  require  compliance  with  a  number  of  procedural,  documentary,  fee  payment  and
other similar provisions during the patent application process. While an inadvertent lapse can in many cases be cured by payment of a late fee or by other
means  in  accordance  with  the  applicable  rules,  there  are  situations  in  which  noncompliance  can  result  in  abandonment  or  lapse  of  the  patent  or  patent
application,  resulting  in  partial  or  complete  loss  of  patent  rights  in  the  relevant  jurisdiction.  Noncompliance  events  that  could  result  in  abandonment  or
lapse of a patent or patent application include, but are not limited to, failure to respond to official actions within prescribed time limits, non-payment of fees
and failure to properly legalize and submit formal documents. Such noncompliance events are outside of our direct control for (1) non-U.S. patents and
patent applications owned by us, and (2) patents and patent applications licensed to us by another entity. In such an event, our competitors might be able to
enter the market, which would have a material adverse effect on our business.

Issued patents covering our product candidates could be found invalid or unenforceable if challenged in court or the USPTO.

If  we  or  one  of  our  licensing  partners  initiate  legal  proceedings  against  a  third  party  to  enforce  a  patent  covering  one  of  our  product  candidates,  the
defendant could counterclaim that the patent covering our product candidate, as applicable, is invalid and/or unenforceable. In patent litigation in the U.S.,
defendant counterclaims alleging invalidity and/or unenforceability are commonplace, and there are numerous grounds upon which a third party can assert
invalidity or unenforceability of a patent. Third parties may also raise similar claims before administrative bodies in the U.S. or abroad, even outside the
context  of  litigation.  Such  mechanisms  include  re-examination,  post  grant  review,  and  equivalent  proceedings  in  foreign  jurisdictions,  for  example,
opposition proceedings. Any such proceedings could result in revocation or amendment to our patents in such a way that they no longer cover our product
candidates. The outcome following legal assertions of invalidity and unenforceability is unpredictable. With respect to the validity question, for example,
we cannot be certain that there is no invalidating prior art and that prior art that was cited during prosecution, but not relied on by the patent examiner, will
not be revisited. If a defendant were to prevail on a legal assertion of invalidity and/or unenforceability, we would lose at least part, and perhaps all, of the
patents directed to our product candidates. A loss of patent rights could have a material adverse impact on our business.

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

As  is  the  case  with  other  biopharmaceutical  companies,  our  success  is  heavily  dependent  on  intellectual  property,  particularly  patents.  Obtaining  and
enforcing patents in the biopharmaceutical industry involve both technological and legal complexity, and is therefore costly, time-consuming and inherently
uncertain.  In  addition,  the  U.S.  has  recently  enacted  and  is  currently  implementing  wide-ranging  patent  reform  legislation.  Recent  U.S.  Supreme  Court
rulings have narrowed the scope of patent protection available in certain circumstances and weakened the rights of patent owners in certain situations. In
addition to increasing uncertainty with regard to our ability to obtain patents in the future, this combination of events has created uncertainty with respect to
the value of patents, once obtained. Depending on decisions by the U.S. Congress, the federal courts, and the USPTO, the laws and regulations governing
patents could change in unpredictable ways that would weaken our ability to obtain new patents or to enforce our existing patents and patents that we might
obtain in the future. For example, in the recent case, Assoc. for Molecular Pathology v. Myriad Genetics, Inc., the U.S. Supreme Court held that certain
claims to DNA molecules are not patentable. While we do not believe that any of the patents owned or licensed by us will be found invalid based on this
decision, we cannot predict how future decisions by the courts, the U.S. Congress or the USPTO may impact the value of our patents.

We have limited foreign intellectual property rights and may not be able to protect our intellectual property rights throughout the world.

We have limited intellectual property rights outside the U.S. Filing, prosecuting and defending patents on product candidates in all countries throughout the
world would be prohibitively expensive, and our intellectual property rights in some countries outside the U.S. can be less extensive than those in the U.S.
In addition, the laws of some foreign countries do not protect intellectual property to the same extent as federal and state laws in the U.S. Consequently, we
may not be able to prevent third parties from practicing our inventions in all countries outside the U.S., or from selling or importing products made using
our  inventions  in  and  into  the  U.S.  or  other  jurisdictions.  Competitors  may  use  our  technologies  in  jurisdictions  where  we  have  not  obtained  patents  to
develop their own products and further, may export otherwise infringing products to territories where we have patents, but enforcement is not as strong as
that in the U.S. These products may compete with our products and our patents or other intellectual property rights may not be effective or sufficient to
prevent them from competing.

46

Table of Contents

Many  companies  have  encountered  significant  problems  in  protecting  and  defending  intellectual  property  in  foreign  jurisdictions.  The  legal  systems  of
certain  countries,  particularly  China  and  certain  other  developing  countries,  do  not  favor  the  enforcement  of  patents,  trade  secrets  and  other  intellectual
property, particularly those relating to biopharmaceutical products, which could make it difficult for us to stop the infringement of our patents or marketing
of  competing  products  in  violation  of  our  proprietary  rights  generally.  To  date,  we  have  not  sought  to  enforce  any  issued  patents  in  these  foreign
jurisdictions. Proceedings to enforce our patent rights in foreign jurisdictions could result in substantial costs and divert our efforts and attention from other
aspects of our business, could put our patents at risk of being invalidated or interpreted narrowly and our patent applications at risk of not issuing and could
provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate, and the damages or other remedies awarded, if any,
may not be commercially meaningful. The requirements for patentability may differ in certain countries, particularly developing countries. Furthermore,
generic drug manufacturers or other competitors may challenge the scope, validity or enforceability of our or our licensors’ patents, requiring us or our
licensors to engage in complex, lengthy and costly litigation or other proceedings. Certain countries in Europe and developing countries, including China
and India, have compulsory licensing laws under which a patent owner may be compelled to grant licenses to third parties. In those countries, we and our
licensors  may  have  limited  remedies  if  patents  are  infringed  or  if  we  or  our  licensors  are  compelled  to  grant  a  license  to  a  third  party,  which  could
materially  diminish  the  value  of  those  patents.  This  could  limit  our  potential  revenue  opportunities.  Accordingly,  our  efforts  to  enforce  our  intellectual
property rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that we develop or license.

We may be subject to claims that our employees, consultants or independent contractors have wrongfully used or disclosed confidential information of
third parties.

We have received confidential and proprietary information from third parties. In addition, we employ individuals who were previously employed at other
biotechnology  or  pharmaceutical  companies.  We  may  be  subject  to  claims  that  we  or  our  employees,  consultants  or  independent  contractors  have
inadvertently  or  otherwise  used  or  disclosed  confidential  information  of  these  third  parties  or  our  employees’  former  employers.  Litigation  may  be
necessary to defend against these claims. Even if we are successful in defending against these claims, litigation could result in substantial cost and be a
distraction to our management and employees.

Risks Related to Ownership of our Common Stock

If we fail to satisfy applicable listing standards, our common stock may be delisted from the Nasdaq Capital Market.

Our ability to publicly or privately sell equity securities and the liquidity of our common stock could be adversely affected if we are delisted from The
Nasdaq Capital Market or if we are unable to transfer our listing to another stock market. On April 27, 2020, we were notified by The Nasdaq Stock Market
LLC,  or  Nasdaq,  that  we  were  in  breach  of  Listing  Rule  5450(b)(2)(A),  or  the  Market  Value  Rule,  for  continued  listing  on  The  Nasdaq  Global  Market
because the market value of our listed securities for 30 consecutive business days had been less than $50 million. In lieu of seeking compliance with the
Market Value Rule, on June 16, 2020, we received approval from Nasdaq to transfer the listing of our common stock from The Nasdaq Global Market to
The Nasdaq Capital Market, which became effective at the opening of business on June 18, 2020. Although we were able to transfer our listing to The
Nasdaq Capital Market, we could subsequently fail to satisfy Nasdaq’s requirements for continued listing on The Nasdaq Capital Market and receive notice
from Nasdaq that our stock may become subject to delisting.

If we are unable to continue to meet the requirements for listing on the Nasdaq Capital Market and our common stock is delisted by Nasdaq, it could lead to
a  number  of  negative  implications,  including  an  adverse  effect  on  the  price  of  our  common  stock,  increased  volatility  in  our  common  stock,  reduced
liquidity in our common stock, the loss of federal preemption of state securities laws and greater difficulty in obtaining financing.

In addition, delisting of our common stock could deter broker-dealers from making a market in or otherwise seeking or generating interest in our common
stock, could result in a loss of current or future coverage by certain sell-side analysts and might deter certain institutions and persons from investing in our
securities at all. Delisting could also cause a loss of confidence of our customers, collaborators, vendors, suppliers and employees, which could harm our
business and future prospects.

If  our  common  stock  is  delisted  by  The  Nasdaq  Capital  Market,  the  price  of  our  common  stock  may  decline,  and  although  our  common  stock  may  be
eligible to trade on the OTC Bulletin Board, another over-the-counter quotation system, or on the pink sheets, an investor may find it more difficult to
dispose  of  their  common  stock  or  obtain  accurate  quotations  as  to  the  market  value  of  our  common  stock.  Further,  if  we  are  delisted,  we  would  incur
additional costs under state blue sky laws in connection with any sales of our securities. These requirements could severely limit the market liquidity of our
common stock and the ability of our shareholders to sell our common stock in the secondary market.

47

Table of Contents

The price of our stock is volatile and you could lose all or part of your investment.

Prior to our December 2014 IPO, there was no public market for our common stock. The trading price of our common stock is likely to continue to be
highly volatile and subject to wide fluctuations in response to various factors, some of which are beyond our control, including market conditions in general
and a limited trading volume for our shares. In addition to the factors discussed in this “Risk Factors” section and elsewhere in our Annual Report, these
factors include:

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

the commencement, enrollment or results of the planned clinical trials of our product candidates or any future clinical trials we may conduct, or
changes in the development status of our product candidates;

any delay in our regulatory filings for our product candidates and any adverse development or perceived adverse development with respect to the
applicable regulatory authority’s review of such filings, including without limitation the FDA’s issuance of a “refusal to file” letter or a request for
additional information;

adverse results or delays in our ongoing or future clinical trials;

our decision to initiate a clinical trial, not to initiate a clinical trial or to terminate an existing clinical trial;

adverse regulatory decisions, including failure to receive regulatory approval of our product candidates;

changes in laws or regulations applicable to our products, including but not limited to clinical trial requirements for approvals;

adverse developments concerning our CID technology platform and our small molecule drug rimiducid;

adverse developments concerning our contract manufacturers;

changes in the structure of healthcare payment systems;

our inability to maintain successful collaborations or to establish new collaborations if needed;

our failure to commercialize our product candidates;

additions or departures of key scientific or management personnel;

unanticipated serious safety concerns related to the use of our product candidates;

introduction of new products or services offered by us or our competitors;

announcements of significant acquisitions, strategic partnerships, joint ventures or capital commitments by us or our competitors;

our ability to effectively manage our growth;

the size and growth of our initial target markets;

our ability to successfully treat additional types of diseases and cancers or at different stages;

actual or anticipated variations in quarterly operating results;

our cash position;

our failure to meet the estimates and projections of the investment community or that we may otherwise provide to the public;

publication of research reports about us or our industry, or immunotherapy in particular, or positive or negative recommendations or withdrawal of
research coverage by securities analysts;

changes in the market valuations of similar companies;

overall performance of the equity markets;

sales of our common stock by us or our stockholders in the future;

trading volume of our common stock;

changes in accounting practices;

ineffectiveness of our internal controls;

disputes or other developments relating to proprietary rights, including patents, litigation matters and our ability to obtain patent protection for our
technologies;

significant lawsuits, including patent or stockholder litigation;

48

Table of Contents

•

•

general political and economic conditions; and

other events or factors, many of which are beyond our control.

In addition, the stock market in general, and biopharmaceutical companies in particular, have experienced extreme price and volume fluctuations that have
often  been  unrelated  or  disproportionate  to  the  operating  performance  of  these  companies.  Broad  market  and  industry  factors  may  negatively  affect  the
market price of our common stock, regardless of our actual operating performance. In the past, securities class action litigation has often been instituted
against  companies  following  periods  of  volatility  in  the  market  price  of  a  company’s  securities.  This  type  of  litigation,  if  instituted,  could  result  in
substantial costs and a diversion of management’s attention and resources, which would harm our business, operating results or financial condition.

We do not intend to pay dividends on our common stock, so any returns will be limited to the value of our stock.

We currently anticipate that we will retain future earnings for the development, operation and expansion of our business and do not anticipate declaring or
paying any cash dividends for the foreseeable future.

Our principal stockholders own a significant percentage of our stock and can exert significant control over matters subject to stockholder approval.

Holders of 5% or more of our capital stock and their respective affiliates beneficially own a significant portion of our voting stock, including shares subject
to outstanding options. As a result, if these shareholders were to choose to act together, they would have the ability to significantly influence all matters
requiring  stockholder  approval.  For  example,  these  stockholders  may  be  able  to  significantly  influence  elections  of  directors,  amendments  of  our
organizational  documents,  or  approval  of  any  merger,  sale  of  assets,  or  other  major  corporate  transaction.  This  may  prevent  or  discourage  unsolicited
acquisition proposals or offers for our common stock that you may feel are in your best interest as one of our stockholders.

As of December 31, 2019, we are no longer an “emerging growth company” and, as a result, are required to comply with increased disclosure and
governance requirements.

As more than five fiscal years have passed since the December 18, 2014, listing of common stock listing on the Nasdaq, we ceased to be an “emerging
growth  company”  as  defined  in  the  JOBS  Act  as  of  December  31,  2019.  However,  we  currently  qualify  as  a  “Smaller  Reporting  Company”  under
applicable SEC rules, which limits some of the otherwise applicable public company requirements. Below are specific requirements to which we are now
subject that did not previously apply to us. These requirements include the “say on pay” provisions (requiring a non-binding stockholder vote to approve
compensation  of  certain  executive  officers)  and  the  “say  on  golden  parachute”  provisions  (requiring  a  non-binding  stockholder  vote  to  approve  golden
parachute  arrangements  for  certain  executive  officers  in  connection  with  mergers  and  certain  other  business  combinations)  of  the  Dodd-Frank  Act  and
some of the disclosure requirements of the Dodd-Frank Act relating to compensation of our chief executive officer.

Compliance with such requirements is expensive and time-consuming for management, as the loss of “emerging growth company” status and compliance
with the additional requirements substantially increases our legal and financial compliance costs and makes some activities more time-consuming and
costly.

Changes in accounting rules, assumptions and/or judgments could materially and adversely affect us.

Accounting  rules  and  interpretations  for  certain  aspects  of  our  operations  are  highly  complex  and  involve  significant  assumptions  and  judgment.  These
complexities  could  lead  to  a  delay  in  the  preparation  and  dissemination  of  our  financial  statements.  Furthermore,  changes  in  accounting  rules  and
interpretations or in our accounting assumptions and/or judgments, such as asset impairments, could significantly impact our financial statements. In some
cases,  we  could  be  required  to  apply  a  new  or  revised  standard  retroactively,  resulting  in  restating  prior  period  financial  statements.  Any  of  these
circumstances could have a material adverse effect on our business, prospects, liquidity, financial condition and results of operations.

Our consolidated financial statements, including our liabilities and statements of operations are subject to quarterly changes in our accounting of our
outstanding Series 1 Preferred Stock, warrants and related option fee proceeds.

In accordance with ASC Topic 815, Accounting for Derivative Instruments and Hedging Activities, and ASC Topic 480, Liabilities-Distinguishing  from
Equity, convertible preferred shares are accounted for as temporary equity and warrants are accounted for as liabilities at their fair value during periods
where they can be net cash settled in case of a change in control transaction. The warrants are accounted for as a liability at their fair value at each reporting
period. The value of the derivative warrant liability is re-measured at each reporting period with changes in fair value recorded in earnings. To derive an
estimate  of  the  fair  value  of  these  warrants,  the  binomial  model  is  utilized,  adjusted  for  the  effect  of  dilution,  which  embodies  all  of  the  requisite
assumptions  (including  trading  volatility,  estimated  terms,  dilution  and  risk-free  rates)  necessary  to  determine  the  fair  value  of  these  instruments.  This
process requires the development of significant and subjective estimates that may, and are likely to, change over the duration of the instrument with related
changes in internal and external market factors. Additionally, in connection with our August 2019 private placement we received option fee proceeds, or
the Option Fee, which is accounted for as

49

Table of Contents

a  liability.  The  value  of  the  Option  Fee  is  re-measured  at  each  reporting  period  with  changes  in  fair  value  recorded  through  earnings.  As  a  result,  our
consolidated financial statements and results of operations may fluctuate quarterly, based on factors, such as the trading value of our common stock and
certain assumptions, which are outside of our control. Consequently, our liabilities and consolidated statements of operations may vary quarterly, based on
factors other than our revenues and expenses. The liabilities and accounting line items associated with our derivative securities on our balance sheet and
statement of operations are non-cash items, and the inclusion of such items in our financial statements may materially affect the outcome of our quarterly
and annual results, even though such items are non-cash and do not affect the cash we have available for operations. Investors should take such derivative
accounting  matters  and  other  non-cash  items  into  account  when  comparing  our  quarter-to-quarter  and  year-to-year  operating  results  and  financial
statements.

Sales of a substantial number of shares of our common stock by our existing stockholders in the public market could cause our stock price to fall.

Certain holders of our outstanding shares of common stock, are entitled to rights with respect to the registration of their shares under the Securities Act of
1933, as amended, or the Securities Act. Any sales of these shares by such stockholders could have a material adverse effect on the trading price of our
common stock.

We register on Form S-8 all shares of common stock that are issuable under our 2019 Equity Incentive Plan, as amended, or the EIP. As a consequence,
these shares can be freely sold in the public market upon issuance, subject to volume limitations applicable to affiliates.

Future sales and issuances of our common stock or rights to purchase common stock, including pursuant to our EIP and shelf registration statement,
could result in additional dilution of the percentage ownership of our stockholders and could cause our stock price to fall.

We expect that significant additional capital will be needed in the future to continue our planned operations, including conducting clinical trials, expanded
research  and  development  activities  and  costs  associated  with  operating  a  public  company.  To  raise  capital,  we  may  sell  common  stock,  convertible
securities or other equity securities in one or more transactions at prices and in a manner we determine from time to time, including pursuant to our shelf
registration statement on Form S-3 that we filed with the SEC. If we sell common stock, convertible securities or other equity securities, investors may be
materially diluted by subsequent sales. Any such sales may also result in material dilution to our existing stockholders, and new investors could gain rights,
preferences and privileges senior to the existing holders of our common stock.

We completed a public offering of our Series 1 preferred stock on August 21, 2019 and are obligated to issue shares of Series 2 and Series 3 preferred
stock  in  connection  with  the  concurrent  private  placement,  and  if  we  are  required  to  redeem  shares  of  preferred  stock,  our  cash  position  will  be
negatively impacted. In addition, we may not have sufficient funds to redeem such shares of preferred stock.

We issued 575,000 shares of Series 1 preferred stock in connection with our August 2019 public offering and are obligated to issue up to 350,000 shares of
Series 2 preferred stock and 250,000 shares of Series 3 preferred stock pursuant to the purchase agreement governing our August 2019 private placement.

Subject to the terms of our certificate of incorporation, at any time on or after August 21, 2024, some or all of our outstanding shares of preferred stock will
be redeemable at the option of the holder at a redemption price of $100.00 per share of Series 1 and Series 2 preferred stock and $140.00 per share of Series
3 preferred stock, upon delivery of an irrevocable written notice to us. If a holder of preferred stock requests redemption we will be required to redeem such
shares of preferred stock. However, we may be unable to redeem such preferred stock if restrictions under applicable law or contractual obligations prohibit
such redemption. For example, Delaware law provides that a redemption on capital stock may only be paid from “surplus” or, if there is no “surplus,” from
a corporation’s net profits for the then-current or the preceding fiscal year. Unless we operate profitably, our ability to redeem the preferred stock would
require the availability of adequate “surplus,” which is defined as the excess, if any, of our net assets (total assets less total liabilities) over our capital. To
date, we have operated at a loss. Accordingly, if we do not have sufficient “surplus” under Delaware law, we would be unable to effect such redemption. If
we do have sufficient “surplus” to effect such redemption, our available cash will be negatively impacted and our ability to use the net proceeds from this
offering  could  be  substantially  limited.  In  addition,  such  reduction  in  our  available  cash  could  decrease  the  trading  price  of  our  common  stock,  and,
accordingly, the preferred stock and our warrants.

The issuance or sale of shares of our common stock, or rights to acquire shares of our common stock, including the issuance of our securities pursuant
to our August 2019 private placement, could depress the trading price of our common stock.

Under the terms of the private placement transaction, we are obligated to issue (i) up to 350,000 shares of Series 2 preferred stock, at a purchase price of
$100.00 per share, and related warrants to purchase up to 2,800,000 shares of our common stock at an exercise price of $10.00 per share, and (ii) 250,000
shares of Series 3 preferred stock, at a purchase price of $140.00 per share, and related warrants to purchase up to 875,000 shares of our common stock at
an exercise price of $14.00 per share, for aggregate gross proceeds of up to $70,000,000, to certain institutional investors in two or more separate closings,
each to occur at such investors’

50

Table of Contents

discretion. In addition, we may conduct future offerings of our common stock, preferred stock or other securities that are convertible into or exercisable for
our common stock to finance our operations or fund acquisitions, or for other purposes. If we issue additional shares of our common stock or rights to
acquire shares of our common stock, if any of our existing stockholders sells a substantial amount of our common stock, or if the market perceives that
such issuances or sales may occur, then the trading price of our common stock, and, accordingly, the trading price of our common stock may significantly
decrease. In addition, our issuance of additional shares of common stock will dilute the ownership interests of our existing common stockholders.

Certain investors in the private placement will have the ability to control or significantly influence certain business decisions.

Pursuant to the terms of the securities purchase agreement for the private placement transaction, certain investors in the private placement transaction have
consent rights over certain significant matters of the Company’s business. These include decisions to authorize or issue equity securities that are senior or
pari passu to the Series 3 preferred stock with respect to liquidation preference, the incurrence of indebtedness in excess of $1,000,000, the sale or license
of the Company’s iMC switch technology and the payment of dividends. As a result, these stockholders, acting together, will have significant influence
over certain matters affecting our business.

Anti-takeover provisions under our charter documents and Delaware law could delay or prevent a change of control which could limit the market price
of our common stock and may prevent or frustrate attempts by our stockholders to replace or remove our current management.

Our amended and restated certificate of incorporation and amended and restated bylaws contain provisions that could delay or prevent a change of control
of our company or changes in our board of directors that our stockholders might consider favorable. Some of these provisions include:

•

•

•

•

•

•

•

a board of directors divided into three classes serving staggered three-year terms, such that not all members of the board will be elected at one
time;

a prohibition on stockholder action through written consent, which requires that all stockholder actions be taken at a meeting of our stockholders;

a requirement that special meetings of stockholders be called only by the chairman of the board of directors, the chief executive officer, or by a
majority of the total number of authorized directors;

advance notice requirements for stockholder proposals and nominations for election to our board of directors;

a requirement that no member of our board of directors may be removed from office by our stockholders except for cause and, in addition to any
other vote required by law, upon the approval of not less than two-thirds of all outstanding shares of our voting stock then entitled to vote in the
election of directors;

a requirement of approval of not less than two-thirds of all outstanding shares of our voting stock to amend any bylaws by stockholder action or to
amend specific provisions of our certificate of incorporation; and

the  authority  of  the  board  of  directors  to  issue  convertible  preferred  stock  on  terms  determined  by  the  board  of  directors  without  stockholder
approval and which convertible preferred stock may include rights superior to the rights of the holders of common stock.

In addition, because we are incorporated in Delaware, we are governed by the provisions of Section 203 of the Delaware General Corporate Law, which
may prohibit certain business combinations with stockholders owning 15% or more of our outstanding voting stock. These anti-takeover provisions and
other provisions in our amended and restated certificate of incorporation and amended and restated bylaws could make it more difficult for stockholders or
potential acquirers to obtain control of our board of directors or initiate actions that are opposed by the then-current board of directors and could also delay
or impede a merger, tender offer or proxy contest involving our company. These provisions could also discourage proxy contests and make it more difficult
for  you  and  other  stockholders  to  elect  directors  of  your  choosing  or  cause  us  to  take  other  corporate  actions  you  desire.  Any  delay  or  prevention  of  a
change of control transaction or changes in our board of directors could cause the market price of our common stock to decline.

Our amended and restated certificate of incorporation and amended and restated bylaws provide that the Court of Chancery of the State of Delaware
will  be  the  exclusive  forum  for  substantially  all  disputes  between  us  and  our  stockholders,  which  could  limit  our  stockholders’  ability  to  obtain  a
favorable judicial forum for disputes with us or our directors, officers, or employees.*

Our amended and restated certificate of incorporation and our bylaws provide that, unless we consent in writing to the selection of an alternative forum, the
Court of Chancery of the State of Delaware is the exclusive forum for (i) any derivative action or proceeding brought on our behalf; (ii) any action asserting
a claim of breach of a fiduciary duty owed by any of our directors, officers or other employees to us or our stockholders; (iii) any action asserting a claim
against us or any of our directors, officers or other employees arising pursuant to any provision of the Delaware General Corporation Law, our amended
and restated certificate

51

Table of Contents

of incorporation or our amended and restated bylaws; or (iv) any action asserting a claim against us or any of our directors, officers or other employees
governed by the internal affairs doctrine.

These provisions would not apply to suits brought to enforce a duty or liability created by the Exchange Act. Furthermore, Section 22 of the Securities Act
creates concurrent jurisdiction for federal and state courts over all such Securities Act actions. Accordingly, both state and federal courts have jurisdiction
to entertain such claims.

These exclusive forum provisions may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our
directors, officers, or other employees, which may discourage lawsuits against us and our directors, officers and other employees. If a court were to find
either  exclusive-forum  provision  to  be  inapplicable  or  unenforceable  in  an  action,  we  may  incur  further  significant  additional  costs  associated  with
resolving the dispute in other jurisdictions, all of which could seriously harm our business.

If securities or industry analysts do not publish research or publish inaccurate or unfavorable research about our business, our stock price and trading
volume could decline.

The trading market for our common stock depends in part on the research and reports that securities or industry analysts publish about us or our business.
In the event securities or industry analysts that cover us downgrade our stock or publish inaccurate or unfavorable research about our business, our stock
price may decline. If one or more of these analysts ceases coverage of us or fails to publish reports on us regularly, demand for our stock could decrease,
which might cause our stock price and trading volume to decline.

52

Table of Contents

ITEM 1B.  Unresolved Staff Comments

None.

ITEM 2.  Properties

As of December 31, 2020, the Company leased the following principle physical properties:

Location

Houston, Texas
South San Francisco

28,345 square feet for administrative and research and development activities
13,943 square feet for office space

Facilities

Leases for these leased facilities expire in the years 2022 and 2023. We believe our facilities are suitable and adequate for our current needs, and that we
will be able to locate additional facilities as needed.

53

Table of Contents

ITEM 3.  Legal Proceedings

The information set forth under the “Litigation” subheading in Note 8 - Commitments and Contingencies of Notes to Consolidated Financial Statements in
Part II, Item 8 of this Annual Report on Form 10-K is incorporated herein by reference.

ITEM 4.  Mine Safety Disclosures

Not applicable.

54

Table of Contents

PART II

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

Market Information

Our common stock is currently listed on The Nasdaq Capital Market under the symbol "BLCM".

Holders of Record

As of March 22, 2021, there were approximately 14 stockholders of record of our common stock. Certain shares are held in “street” name and thus the
actual number of beneficial owners of such shares is not known or included in the foregoing number.

Dividend Policy

We have never declared or paid any dividends on our common stock. We currently intend to retain all available funds and any future earnings to support
our operations and finance the growth and development of our business and we do not anticipate paying any cash dividends in the foreseeable future. Any
future determination related to our dividend policy will be made at the discretion of our board of directors and will depend upon, among other factors, our
results  of  operations,  financial  condition,  capital  requirements,  contractual  restrictions,  business  prospects  and  other  factors  our  board  of  directors  may
deem relevant.

Securities Authorized for Issuance under Equity Compensation Plans

Information about our equity compensation plans is incorporated herein by reference to Item 12 of Part III of this Annual Report.

Recent Sales of Unregistered Securities

None.

55

Table of Contents

ITEM 6.  Selected Financial Data

We have elected to comply with Item 301 of Regulations S-K, as amended February 10, 2021, and are omitting this disclosure in reliance thereon.

56

Table of Contents

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

The following discussion and analysis should be read in conjunction with “Item 6. Selected Financial Data” and the financial statements and related notes
included  in  "Item  8  -  Financial  Statements  and  Supplementary  Data"  in  this  Annual  Report  on  Form  10-K.  The  following  discussion  contains  forward-
looking statements that involve risks and uncertainties. Our actual results could differ materially from those expressed or implied in any forward-looking
statements as a result of various factors, including those set forth under the caption “Item 1A. Risk Factors.”

On February 5, 2020, we filed a Certificate of Amendment of the Amended and Restated Certificate of Incorporation with the Secretary of State of the
State  of  Delaware  to  (i)  effect  a  reverse  stock  split  of  all  issued  and  outstanding  shares  of  our  common  stock  at  a  ratio  of  1-for-10  and  (ii)  reduce  the
number of authorized shares of our common stock from 200,000,000 to 40,000,000.

On February 5, 2020, we effected a reverse stock split of all issued and outstanding shares of our common stock at a ratio of 1-for-10, and reduced the
number of authorized shares of our common stock from 200,000,000 to 40,000,000. Share related amounts have been retroactively adjusted in this Annual
Report on Form 10-K to reflect this reverse stock-split for all periods presented.

Overview

We are a clinical stage biopharmaceutical company focused on discovering and developing novel, controllable cellular immunotherapies for various forms
of cancer. We are advancing CAR-T cell therapies which are an innovative approach in which a patient’s or donor’s T cells, are genetically modified to
carry chimeric antigen receptors, or CARs. We are using our proprietary Chemical Induction of Dimerization, or CID, technology platform to engineer our
product  candidates  with  switch  technologies  that  are  designed  to  control  components  of  the  immune  system  in  real  time.  By  incorporating  our  CID
platform,  our  product  candidates  may  offer  better  efficacy  and  safety  outcomes  than  are  seen  with  current  cellular  immunotherapies.  For  additional
information about our business, and candidate development programs, see the discussions contained within “Item 1. Business” in this Annual Report.

Results of Operations

The following table sets forth our results of operations for the periods indicated:

December 31, 2020

December 31, 2019

Change

$

500  $

7,143  $

Year Ended

(in thousands)
Revenues
Operating expenses:

Research and development
General and administrative
Total operating expenses

Other operating income (expense)

Impairment
Gain on dispositions, net
Total other operating income (expense)

Loss from operations
Other income (expense):
Interest income
Interest expense
Change in fair value of warrant and private placement
option liabilities
Gain on extinguishment of debt
Other expense
Total other income (expense)

Net loss

$

(6,643)

(25,483)
(14,441)
(39,924)

(1,265)
3,656 
2,391 
30,890 

(964)
1,621 

65,322 
112 
2,992 
69,083 
99,973 

64,535 
29,972 
94,507 

— 
— 
— 
(87,364)

1,351 
(4,280)

(19,192)
— 
(2,992)
(25,113)
(112,477) $

39,052 
15,531 
54,583 

(1,265)
3,656 
2,391 
(51,692)

387 
(2,659)

46,130 
112 
— 
43,970 
(7,722) $

57

Table of Contents

Revenues

The Company's decrease for the year ended December 31, 2020, compared to the year ended December 31, 2019, was due to the Company receiving $0.5
million related to maintenance of its license agreement with the MD Anderson Cancer Center supporting the ongoing use of its CaspaCIDe safety switch as
its only source of revenue. In the year ended December 31, 2019, the Company received the initial $5 million licensing fee from the same agreement and
unrelated grant revenue.

Research and Development Expenses (R&D)

The decrease in R&D expenses for the year ended December 31, 2020, compared to the year ended December 31, 2019, was primarily due to reduced
expenses related to rivo-cel related activities, the sale of the manufacturing facility, and the reduction in force that was implemented during the second half
of the year ended December 31, 2019, partially offset by an increase in expenses related to our GoCAR-T programs. This resulted in $9.0 million reduction
in salaries, benefits, travel, and share based compensation related charges and a $12.2 million reduction in general R&D expenses primarily due to lower
clinical trial activities. Additionally, depreciation expense decreased $4.3 million due to the manufacturing facility and related laboratories and office space
meeting the accounting standards criteria of assets held for sale, which were then disposed of in April 2020.

General and Administrative Expenses (G&A)

The decrease in G&A expenses for the year ended December 31, 2020, compared to the year ended December 31, 2019, was primarily due the reduction in
rivo-cel related commercialization activities that reduced charges by $13.7 million as well as the aforementioned reduction in force that reduced employee
related charges by $0.7 million.

Impairment

In  October  2020,  in  connection  with  the  Company's  restructuring  plan,  our  management  elected  to  seek  an  exit  to  its  leased  R&D  facility  in  Houston,
Texas. As a result of this decision, the Company reclassified the assets and liabilities associated with the leased facility as held for sale. The reclassified
assets  included  a  right-of-use  asset  of  $0.5  million,  and  property  plant  and  equipment  of  $2.3  million.  Based  on  the  cost  to  exit  the  lease  and  the  net
realizable value of the related assets the Company recognized an impairment charge of $1.3 million in the year ended December 31, 2020.

Gain on dispositions, net

The increase in gain on dispositions, net for the year ended December 31, 2020 over the prior year was primarily due to the disposal of the manufacturing
facility to M.D. Anderson in April 2020.

Other Income (Expense)

Other income primarily consists of changes in the fair value of our warrant liability and the private placement option liability, partially offset by interest
expense.

For the year ended December 31, 2020, the Company had other income of $43.9 million versus the year ended December 31, 2019, total other expense of
$25.1 million. The difference is primarily attributable to $46.1 million gain related to the changes in fair value of our warrant and private placement option
liabilities, which are remeasured at each reporting period, and a reduction in interest expense to $2.6 million with the early retirement of the Oxford Loan.

Liquidity and Capital Resources

Sources of Liquidity

At December 31, 2020, we had an accumulated deficit of approximately $540.7 million, a net loss of approximately $7.7 million, negative cash flows from
operations of approximately $56.7 million, and cash, cash equivalents, and restricted cash of $37.0 million.

Our cash resources are primarily consumed by operating activities and we expect negative cash flows from operations to continue for at least the next 12
months.  Our  primary  uses  of  capital  are,  and  we  expect  will  continue  to  be,  compensation  and  related  expenses,  third-party  clinical  research  and
development services, laboratory services, clinical trial costs, legal and other regulatory expenses and general overhead costs. Based on our current research
and development plans and our timing expectations related to the progress of our programs, we believe that our cash and cash equivalents will be sufficient
to  fund  our  operating  expenses  and  capital  expenditure  requirements  through  at  least  the  next  twelve  months  from  the  date  the  accompanying  annual
financial statements are issued.

58

Table of Contents

We plan to continue to attempt to obtain financing and/or engage in strategic transactions, but we cannot predict, with certainty, the outcome of our actions
to  generate  liquidity,  including  the  availability  of  additional  equity  or  debt  financing,  or  whether  such  actions  would  generate  the  expected  liquidity  as
currently planned. As a result of the COVID-19 pandemic and actions taken to slow its spread, the global credit and financial markets have experienced
extreme  volatility,  including  diminished  liquidity  and  credit  availability,  declines  in  consumer  confidence,  declines  in  economic  growth,  increases  in
unemployment  rates  and  uncertainty  about  economic  stability.  There  can  be  no  assurance  that  further  deterioration  in  credit  and  financial  markets  and
confidence  in  economic  conditions  will  not  occur.  If  equity  and  credit  markets  deteriorate,  it  may  make  any  necessary  debt  or  equity  financing  more
difficult to obtain, more costly and/or more dilutive.

On August 16, 2019, we entered into an underwritten public offering of 575,000 shares of our Series 1 Preferred Stock and warrants to purchase up to
5,750,000 shares of our common stock. Each share of Series 1 Preferred Stock was sold together with a warrant to purchase 10 shares of common stock at a
combined price to the public of $100.00. The net proceeds to us were approximately $53.9 million, net of issuance costs, and excluded any proceeds that
we may receive upon exercise of the warrants.

On August 16, 2019, we entered into a securities purchase agreement to which we agreed to issue in a private placement (i) 350,000 shares of our Series 2
Preferred Stock, at a purchase price of $100.00 per share, and related warrants to purchase up to 2,800,000 shares of our common stock at an exercise price
of $10.00 per share, and (ii) 250,000 shares of our Series 3 Preferred Stock, at a purchase price of $140.00 per share, and related warrants to purchase up to
875,000 shares of our common stock at an exercise price of $14.00 per share. The purchase and sale of the securities issuable under this agreement may
occur  in  two  or  more  separate  closings,  within  five  days’  notice  to  us.  The  Company  received  $11.2  million,  net,  in  proceeds  from  the  issuance  of  the
private placement option.

On January 17, 2020, we entered into an Asset Purchase Agreement with The University of Texas M.D. Anderson Cancer Center, as amended by the First
Amendment to Asset Purchase Agreement dated February 21, 2020, in connection with the sale of certain of our assets. Pursuant to the Asset Purchase
Agreement, we agreed to sell to M.D. Anderson certain assets and liabilities relating to our manufacturing facility and related laboratories and office space
located  at  2130  W.  Holcombe  Blvd.,  Houston,  Texas  77030.  On  April  14,  2020,  we  completed  the  Asset  Sale.  Upon  closing  of  the  Asset  Sale,  M.D.
Anderson  paid  us  an  amount  equal  to  $15.0  million,  subject  to  certain  escrow  provisions  and  a  reduction  for  prepayment  of  rent  under  an  associated
sublease agreement.

In November 2020, we closed an underwritten offering of 1,040,000 shares of common stock, pre-funded warrants to purchase 3,109,378 shares of
common stock, and accompanying common warrants to purchase up to an aggregate of 4,149,378 shares of common stock. Each share of common stock
and pre-funded warrant to purchase one share of common stock was sold together with a common warrant to purchase one share of common stock. The
public offering price of each share of common stock and accompanying common warrant was $6.025 and $6.024 for each pre-funded warrant. The pre-
funded warrants are immediately exercisable at a price of $0.001 per share of common stock. The common warrants are immediately exercisable at an
exercise price of $6.50 per share of common stock and will expire five years from the date of issuance. The shares of common stock and pre-funded
warrants, and the accompanying common warrants, were issued separately and were immediately separable upon issuance. The gross proceeds to us were
approximately $25.0 million before deducting underwriting discounts and commissions and other offering expenses.

Cash Flows

Operating Activities

Net cash used in operating activities during the year ended December 31, 2020, was $56.7 million compared to $77.6 million for the same period last year.
The primary operating activities during the year ended December 31, 2020, were (1) $7.7 million of net losses and (2) a $8.2 million decrease from changes
in operating assets and liabilities, (3) a $46.1 million change in fair market value of warrant derivative and private placement option liabilities, and (4) $3.6
million of gain on dispositions, net. These activities were partially offset by non-cash charges from impairment of property and equipment of $1.4 million
and other smaller non-cash charge items.

Investing Activities

Net cash provided by investing activities during the year ended December 31, 2020, was $14.1 million compared to $48.9 million for the same period last
year. The net cash provided by investing activities during the year ended December 31, 2020, was primarily due to proceeds of $14.7 million from the sale
certain assets in the transaction with M.D. Anderson during 2020. The cash increase was partially offset by purchases of property and equipment of $0.6
million.

59

Table of Contents

Financing Activities

Net cash used in financing activities during the year ended December 31, 2020, was $14.2 million compared to $74.1 million provided for the same period
last  year.  The  net  cash  used  in  financing  activities  during  the  year  ended  December  31,  2020,  was  primarily  due  to  the  principal  payments  and  the
subsequent early retirement of debt totaling $37.1 million partially offset by proceeds from the issuance of common stock and pre-funded warrants, net in
the amount of $22.9 million.

Debt

In October 2020, we executed a payoff letter to repay in full outstanding indebtedness and terminate all commitments and obligations under our Loan and
Security Agreement, dated December 21, 2017, as amended, with Oxford Finance LLC. Pursuant to the payoff letter, we remitted payment of $27.4
million.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements (as defined by applicable regulations of the SEC) that are reasonably likely to have a current or future
material effect on our financial condition, results of operations, liquidity, capital expenditures or capital resources. We do not have any relationships with
unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purpose entities, which would have been
established for the purpose of facilitating off-balance sheet arrangements or for any other contractually narrow or limited purpose.

Critical Accounting Policies and Significant Estimates

Management's  discussion  and  analysis  of  our  financial  condition  and  results  of  operations  are  based  on  our  financial  statements,  which  are  prepared  in
accordance with U.S. generally accepted accounting principles, or GAAP. The preparation of these financial statements requires us to make estimates and
assumptions that affect the reported amounts of assets, liabilities, revenues, costs and expenses and related disclosures. We base our estimates on historical
experience and on various other assumptions that we believe to be reasonable under the circumstances. In many instances, we could have reasonably used
different accounting estimates, and in other instances changes in the accounting estimates are reasonably likely to occur from period to period. Accordingly,
actual  results  could  differ  significantly  from  management’s  estimates  under  different  assumptions  or  conditions.  To  the  extent  that  there  are  material
differences between these estimates and actual results, our future financial statement presentation, financial condition, results of operations and cash flows
will be affected. While our significant accounting policies are described in the notes to our financial statements, we believe that the accounting policies
discussed  below  are  critical  to  understanding  our  historical  and  future  performance,  as  these  policies  related  to  the  more  significant  areas  involving
management’s judgments and estimates. Our management has discussed the development and selection of these critical accounting estimates with the audit
committee of our board of directors and the audit committee has reviewed the company's disclosure relating to it in this MD&A.

Warrant Derivatives

Freestanding warrants exercisable for multiple instruments are classified as liabilities. The Company accounts for these warrants in accordance with ASC
Topic 815, Accounting for Derivative Instruments and Hedging Activities (“ASC 815”). The Company estimates the fair value of these liabilities using the
binomial option model. The option pricing model of our warrant derivative liabilities are estimates and are sensitive to changes to certain inputs used in the
pricing model. See Note 1 - Organization, Basis of Presentation, and Summary of Significant Accounting Policies for a discussion of how the Company
accounts for its warrant derivatives.

Private Placement Option

The Company has entered into a security purchase agreement that contains a call option on preferred shares that are puttable outside the control of the
Company. The Company accounts for the option in accordance with ASC Topic 815, Accounting for Derivative Instruments and Hedging Activities ("ASC
815"). The Company estimates the fair value of the liability using a binomial lattice model. The model is sensitive to changes to certain inputs. See Note 1 -
Organization,  Basis  of  Presentation,  and  Summary  of  Significant  Accounting  Policies  for  a  discussion  of  how  the  Company  accounts  for  its  private
placement option derivative.

Research and Development

Research and development expenses consist of expenses incurred in performing research and development activities, including compensation and benefits
for research and development employees and consultants, facilities expenses, overhead expenses, cost of laboratory supplies, manufacturing expenses, fees
paid to third parties and other outside expenses. We accrue for costs incurred as the services are being provided by monitoring the status of the clinical trial
or project and the invoices received from our external service

60

Table of Contents

providers. We adjust our accrual as actual costs become known. See Note 1 - Organization, Basis of Presentation, and Summary of Significant Accounting
Policies for a discussion of how the Company accounts for research and development expenses.

Share-Based Compensation

The Company's share-based awards include stock option grants and restricted stock awards. The estimated fair value for stock options, which determines
the Company's calculation of compensation expense, is based on the Black-Scholes pricing model, which requires a number of estimates, including the
expected lives of awards, interest rates, stock volatility and other assumptions. Additionally, we apply a forfeiture rate to estimate the number of grants that
will  ultimately  vest,  as  applicable,  and  adjust  the  expense  as  these  awards  vest.  See  Note  1  -  Organization,  Basis  of  Presentation,  and  Summary  of
Significant Accounting Policies for a discussion of how the Company accounts for share-based compensation.

Recently Issued Accounting Pronouncements

See  Note  1  -  Organization,  Basis  of  Presentation,  and  Summary  of  Significant  Accounting  Policies  for  discussion  regarding  recent  accounting
pronouncements.

ITEM 7A.  Quantitative and Qualitative Disclosures About Market Risk

We had cash, cash equivalents and marketable securities totaling $37.0 million and $93.8 million at December 31, 2020 and 2019, respectively. Our cash is
deposited in checking accounts with reputable financial institutions. The primary objective of our investment activities, of our cash equivalents and
marketable securities, is to preserve our capital to fund our operations. We seek to realize income from our investments without assuming significant risk
and we do not enter into investments for trading or speculative purposes.

Interest Rate Fluctuation Risk

A portion of our investments may be subject to interest rate risk and could fall in value if market interest rates increase. However, because our investments
are primarily short-term in duration, we believe that our exposure to interest rate risk is not significant and a 1% movement in market interest rates would
not have a significant impact on the total value of our portfolio. We actively monitor changes in interest rates.

Foreign Currency Risk

We are exposed to changes in foreign currency exchange rates. We have contracts with entities in areas outside the U.S. that are denominated in a foreign
currency. Most  of  our  assets  are  located  within  the  U.S.  and  are  not  subject  to  changes  in  foreign  currency  exchange  rates,  however  a  portion  of  our
operating expense is denominated in foreign currencies, primarily pounds sterling and euros. We do not engage in any hedging transactions to mitigate the
effect of changes in foreign currency exchange rates. While the effect of changes in foreign currency exchange rates has not had a material effect on our
financial results or financial condition to date, we cannot assure you that fluctuations in foreign currency exchange rates will not have a material effect on
our future results.

ITEM 8.  Financial Statements and Supplementary Data

Index to Financial Statements

The financial statements of Bellicum Pharmaceuticals, Inc. listed below are set forth in Item 8 of this Annual Report for the year ended December 31, 2020:

Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations and Comprehensive Loss
Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' (Deficit) Equity
Consolidated Statements of Cash Flows
Notes to the Financial Statements

Page
62
65
66
67
68
69

61

 
Table of Contents

To the Stockholders and the Board of Directors of Bellicum Pharmaceuticals, Inc.

Opinion on the Financial Statements

Report of Independent Registered Public Accounting Firm

We have audited the accompanying consolidated balance sheets of Bellicum Pharmaceuticals, Inc. (the Company) as of December 31, 2020 and 2019, the
related consolidated statements of operations and comprehensive loss, redeemable convertible preferred stock and stockholders' (deficit) equity and cash
flows  for  each  of  the  two  years  in  the  period  ended  December  31,  2020,  and  the  related  notes  (collectively  referred  to  as  the  “consolidated  financial
statements”).  In  our  opinion,  the  consolidated  financial  statements  present  fairly,  in  all  material  respects,  the  financial  position  of  the  Company  at
December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the two years in the period ended December 31, 2020, in
conformity with U.S. generally accepted accounting principles.

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  Public  Company  Accounting  Oversight  Board  (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. The Company is not required to have, nor
were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of
internal  control  over  financial  reporting  but  not  for  the  purpose  of  expressing  an  opinion  on  the  effectiveness  of  the  Company's  internal  control  over
financial reporting. Accordingly, we express no such opinion.

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.

Critical Audit Matter
The  critical  audit  matter  communicated  below  is  a  matter  arising  from  the  current  period  audit  of  the  financial  statements  that  was  communicated  or
required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2)
involved our especially challenging, subjective or complex judgments. The communication of the critical audit matter does not alter in any way our opinion
on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion
on the critical audit matter or on the accounts or disclosures to which it relates.

62

Table of Contents

Description of the Matter

How We Addressed the
Matter in Our Audit

Private placement option liability and warrant liability valuation of Bellicum Pharmaceuticals

The Company’s warrant derivative liability and the private placement option liability are remeasured at fair value on each
balance sheet date and are valued at $10.3 million and $7.8 million, respectively, as of December 31, 2020. As explained in
Note 2 to the consolidated financial statements, the Company holds freestanding warrants that are exercisable for multiple
underlying instruments that are potentially redeemable, and the Company is a party to a private placement option security
purchase agreement that contains a call option on preferred shares that are puttable outside the control of the Company.

Auditing  management’s  calculation  of  estimated  fair  value  remeasurements  of  the  warrant  derivative  liability  and  private
placement  option  liability  was  complex  and  judgmental  due  to  the  use  of  a  complex  valuation  model  and  the  level  of
uncertainty involved in management’s assumptions used in the measurement process. In particular, management was required
to estimate a volatility assumption at December 31, 2020.
Our substantive audit procedures included, among others, evaluating the methodology and testing the significant assumption
stated above and the accuracy and completeness of the underlying data used in management’s warrant derivative liability and
private  placement  option  liability  valuation  assessments.  To  test  the  volatility,  we  compared  the  assumption  to  historical
information and performed a sensitivity analysis to evaluate the impact of changes in the fair value estimate that would result
from  changes  in  the  underlying  assumption.  We  also  involved  our  valuation  specialists  to  assist  in  the  evaluation  of  the
complex valuation model and the volatility assumption in the fair value estimates.

/s/ Ernst & Young LLP

We have served as the Company’s auditor since 2014.

Houston, Texas

March 30, 2021

63

Table of Contents

64

Table of Contents

Bellicum Pharmaceuticals, Inc.
Consolidated Balance Sheets
(in thousands, except par value and share data)

December 31,

2020

2019

ASSETS
Current assets:

Cash and cash equivalents
Restricted cash
Accounts receivable, interest and other receivables
Prepaid expenses and other current assets
Assets held for sale

Total current assets
Operating lease right-of-use assets
Property and equipment, net
Other assets

Total assets
LIABILITIES, PREFERRED STOCK AND STOCKHOLDERS’ DEFICIT
Current liabilities:

Accounts payable
Accrued expenses and other current liabilities
Warrant derivative liability
Private placement option liability
Current portion of long-term debt
Current portion of lease liabilities
Liabilities held for sale

Total current liabilities

Long-term debt, net of deferred issuance costs
Long-term lease liabilities

Total liabilities
Commitments and contingencies
Preferred stock: $0.01 par value; 10,000,000 shares authorized

Series 1 redeemable convertible preferred stock, $0.01 par value, 1,517,500 shares authorized at
December 31, 2020 and December 31, 2019, 452,000 shares issued and outstanding at
December 31, 2020, 538,000 shares issued and outstanding at December 31, 2019

Stockholders’ deficit:

Common stock, $0.01 par value; 80,000,000 shares authorized at December 31, 2020 and
December 31, 2019, respectively; 8,385,650 shares issued and 8,317,904 shares outstanding at
December 31, 2020; 5,076,593 shares issued and 5,008,846 shares outstanding at December 31,
2019
Treasury stock: 67,746 shares held at December 31, 2020 and December 31, 2019
Additional paid-in capital
Accumulated other comprehensive loss
Accumulated deficit
Total stockholders’ deficit

Total liabilities, preferred stock and stockholders' deficit

$

$

$

$

35,495  $
1,501 
2 
802 
1,643 
39,443 
645 
189 
307 
40,584  $

891  $

4,165 
10,345 
7,803 
— 
825 
672 
24,701 
— 
344 
25,045 

91,028 
2,788 
303 
884 
16,851 
111,854 
1,042 
2,529 
825 
116,250 

2,643 
9,770 
52,184 
12,094 
11,000 
454 
6,273 
94,418 
25,717 
864 
120,999 

18,036 

21,468 

84 
(5,056)
543,561 
(339)
(540,747)
(2,497)
40,584  $

507 
(5,056)
511,684 
(327)
(533,025)
(26,217)
116,250 

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

65

Bellicum Pharmaceuticals, Inc.
Consolidated Statements of Operations and Comprehensive Loss
(in thousands, except share and per share amounts)

Table of Contents

Revenues
     Grants
     License fee revenue
Total revenues
Operating expenses
     Research and development
     General and administrative
Total operating expenses
Other operating income (expense)

Impairment of property and equipment
Gain on dispositions, net
Total other operating income
Loss from operations
Other income (expense):
     Interest income
     Interest expense
     Change in fair value of warrant and private placement option liabilities

Gain on extinguishment of debt

     Other expense
Total other income (expense)

Net loss

Net loss per common share attributable to common shareholders, basic and diluted

Weighted-average shares outstanding-basic and diluted

Net loss
Other comprehensive loss:
Unrealized gain on available-for-sale securities, net of tax
Foreign currency translation adjustment

Comprehensive loss

Year Ended December 31,

2020

2019

—  $
500 
500 

39,052 
15,531 
54,583 

(1,265)
3,656 
2,391 
(51,692)

387 
(2,659)
46,130 
112 
— 
43,970 
(7,722) $

(1.34) $

5,760,159

2,143 
5,000 
7,143 

64,535 
29,972 
94,507 

— 
— 
— 
(87,364)

1,351 
(4,280)
(19,192)
— 
(2,992)
(25,113)
(112,477)

(24.01)

4,684,711

(7,722) $

(112,477)

— 
(12)
(7,734) $

45 
(228)
(112,660)

$

$

$

$

$

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

66

Table of Contents

Bellicum Pharmaceuticals, Inc.
Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders’ (Deficit) Equity
(amounts in thousands, except share data)

Series 1 Preferred

Common Stock

Treasury Stock

Shares

Amount

Shares
—  4,424,205  $
— 
— 

— 
2,985 

Amount
442 
— 
— 

—  $
— 
— 

— 

— 

— 

— 

— 

8,000 

12,287 

— 

259,116 

Balance, December 31, 2018
Share-based compensation
Exercise of stock options
Issuance of common stock -
Employee Stock Purchase Plan
Issuance of common stock upon
vesting of restricted stock units
Issuance of common stock in open
market transactions, net of issuance
costs
Issuance of redeemable convertible
preferred stock in public offering,
net
Conversion of redeemable
convertible preferred stock into
common stock
Comprehensive loss

Balance, December 31, 2019
Share-based compensation
1-for-10 reverse stock split
Issuance of common stock -
Employee Stock Purchase Plan
Issuance of common stock upon
vesting of restricted stock units
Issuance of common stock and pre-
funded warrants exercise, net of
issuance costs
Conversion of redeemable
convertible preferred stock into
common stock
Comprehensive loss

Balance, December 31, 2020

575,000 

22,944 

— 

(37,000)
— 

(1,476)
— 
538,000  $ 21,468  5,076,593  $

370,000 
— 

— 
— 

— 

— 

— 

— 
— 

— 

— 

— 
— 

14,975 

1,406 

—  2,432,676 

(86,000)
— 

(3,432)
— 
452,000  $ 18,036  8,385,650  $

860,000 
— 

Additional
Paid-In
Capital
493,784  $ (420,548) $

Accumulated
Deficit

Accumulated
Other
Comprehensive
Loss

Total
Stockholders'
(Deficit)
Equity

Shares
Amount
(67,746) $ (5,056)
— 
— 

— 
— 

— 

— 

— 

— 

— 
— 

— 

— 

— 

— 

— 
— 

7,338 
76 

97 

(1)

8,951 

— 

— 
— 

— 

— 

— 

— 

1,439 
— 

— 
(112,477)

(67,746) $ (5,056) $

511,684  $ (533,025) $

— 
— 

— 

— 

— 

— 
— 

— 
— 

— 

— 

5,031 
457 

78 

— 

— 

22,888 

— 
— 

— 

— 

— 

— 
— 

3,423 
— 

— 
(7,722)

(67,746) $ (5,056) $ 543,561  $ (540,747) $

1 

1 

26 

— 

37 
— 
507 

— 
(457)

— 

— 

25 

9 
— 
84 

(144) $
— 
— 

68,478 
7,338 
76 

— 

— 

— 

— 

98 

— 

8,977 

— 

— 
(183)
(327) $

1,476 
(112,660)
(26,217)

— 
— 

— 

— 

— 

— 
(12)
(339) $

5,031 
— 

78 

— 

22,913 

3,432 
(7,734)
(2,497)

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

67

Year Ended December 31,

2020

2019

$

(7,722) $

(112,477)

Table of Contents

Bellicum Pharmaceuticals Inc.
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:

Share-based compensation
Depreciation and amortization expense
Change in fair value of warrant and private placement option liabilities
Impairment of intangible assets
Amortization of discount on investment securities, net
Amortization of right-of-use assets
Accretion of lease liability
Impairment of property and equipment
Amortization of deferred issuance costs
Gain on extinguishment of debt
(Gain) loss on dispositions, net
Warrant and private placement option issuance costs
Changes in operating assets and liabilities:

Accounts receivable, interest and other receivables
Prepaid expenses and other assets
Accounts payable
Accrued liabilities and other
Deferred revenue
Net cash used in operating activities
Cash flows from investing activities:

Proceeds from sale of investment securities
Proceeds from sale of property and equipment
Purchases of property and equipment

Cash provided by investing activities
Cash flows from financing activities:

Payment on debt
Proceeds from issuance of common stock in a public offering, net
Proceeds from issuance of redeemable convertible preferred stock in a public offering, net
Proceeds from issuance of warrants in a public offering, net
Proceeds received from private placement option, net
Proceeds from exercise of stock options
Proceeds from issuance of stock from employee stock purchase plan
Proceeds from issuance of common stock and pre-funded warrants exercise, net
Payment on financing lease obligations

Net cash (used in) provided by financing activities
Effect of exchange rate changes on cash
Net change in cash, cash equivalents and restricted cash
Cash, cash equivalents and restricted cash at beginning of period

Cash, cash equivalents and restricted cash at end of period
Supplemental cash flow information:
      Cash paid during the period for interest
Non-cash investing and financing activities:
Financing leases incurred for equipment
Conversion of redeemable preferred stock into common stock
Reclassification of property and equipment, net to assets held for sale
Leasehold improvements paid by landlord

$

$

$
$
$
$

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

68

5,031 
1,472 
(46,130)
— 
— 
402 
414 
1,265 
550 
(112)
(3,656)
— 

301 
563 
(1,917)
(7,111)
— 
(56,650)

— 
14,705 
(625)
14,080 

(37,155)
— 
— 
— 
— 
12 
78 
22,901 
(74)
(14,238)
(12)
(56,820)
93,816 
36,996  $

2,340  $

—  $
3,432  $
2,300  $
113  $

7,338 
7,175 
19,192 
2,064 
(30)
1,331 
804 
— 
885 
— 
6 
3,047 

606 
(1,096)
(1,131)
(2,300)
(2,983)
(77,569)

49,379 
— 
(522)
48,857 

— 
8,977 
22,944 
30,888 
11,152 
76 
98 
— 
(47)
74,088 
(228)
45,148 
48,668 
93,816 

3,201 

167 
1,476 
12,039 
— 

Bellicum Pharmaceuticals, Inc.
Notes to the Consolidated Financial Statements

69

Table of Contents

NOTE 1 - ORGANIZATION, BASIS OF PRESENTATION, AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Organization

Bellicum  Pharmaceuticals,  Inc.  (“Bellicum”)  is  a  clinical  stage  biopharmaceutical  company  focused  on  discovering  and  developing  novel  cellular
immunotherapies for various forms of cancer, including both hematological cancers and solid tumors. Bellicum is devoting substantially all of its present
efforts to developing next-generation product candidates in areas of cellular immunotherapy, including CAR-T therapy.

Bellicum has two wholly-owned subsidiaries, Bellicum Pharma Limited, a private limited company organized under the laws of the United Kingdom, and
Bellicum  Pharma  GmbH,  a  private  limited  liability  company  organized  under  German  law.  Both  were  formed  for  the  purpose  of  developing  product
candidates  in  Europe.  Bellicum,  Bellicum  Pharma  Limited  and  Bellicum  Pharma  GmbH  are  collectively  referred  to  herein  as  the  “Company”.  All
intercompany balances and transactions among the consolidated entities have been eliminated in consolidation.

Operating  segments  are  identified  as  components  of  an  enterprise  about  which  separate  discrete  financial  information  is  available  for  evaluation  by  the
chief  operating  decision-maker.  The  Company  has  determined  that  it  has  one  operating  and  reporting  segment  as  it  allocates  resources  and  assesses
financial performance on a consolidated basis. The Company’s chief operating decision maker is its Chief Executive Officer who manages operations and
reviews the financial information as a single operating segment for purposes of allocating resources and evaluating its financial performance.

Reverse Stock Split

On February 5, 2020, the Company filed a Certificate of Amendment of the Amended and Restated Certificate of Incorporation with the Secretary of State
of the State of Delaware to (i) effect a reverse stock split of all issued and outstanding shares of the Company’s common stock at a ratio of 1-for-10 and (ii)
reduce  the  number  of  authorized  shares  of  the  Company’s  common  stock  from  200,000,000  to  40,000,000.  The  accompanying  consolidated  financial
statements and notes to the consolidated financial statements gives retroactive effect to the reverse stock split for all periods presented.

On June 15, 2020, the Company filed with the Secretary of State of the State of Delaware a Second Certificate of Amendment to the Company’s Amended
and  Restated  Certificate  of  Incorporation  to  increase  the  authorized  number  of  shares  of  the  Company’s  common  stock  from  40,000,000  shares  to
80,000,000 shares.

Basis of Presentation

The accompanying financial statements have been prepared in conformity with the authoritative U.S. generally accepted accounting principles (“GAAP”).

The accompanying financial statements have been prepared on a basis that assumes that the Company will continue as a going concern, and do not include
any adjustments that may result from the outcome of this uncertainty. This basis of accounting contemplates the recovery of the Company’s assets and the
satisfaction of the Company’s liabilities and commitments in the normal course of business and does not include any adjustments to reflect the possible
future effects of the recoverability and classification of recorded asset amounts or amounts and classification of liabilities that might be necessary should
the  Company  be  unable  to  continue  as  a  going  concern.  The  Company  has  experienced  net  losses  since  its  inception  and  if  the  Company  does  not
successfully  obtain  regulatory  approval  and  commercialize  any  of  its  product  candidates,  the  Company  will  not  be  able  to  achieve  profitability. As  of
December 31, 2020, the Company has an accumulated deficit of $540.7 million.

The Company is subject to risks common to companies in the biotechnology industry and the future success of the Company is dependent on its ability to
successfully  complete  the  development  of,  and  obtain  regulatory  approval  for,  its  product  candidates,  manage  the  growth  of  the  organization,  obtain
additional financing necessary in order to develop, launch and commercialize its product candidates, and compete successfully with other companies in its
industry.

70

Table of Contents

The Company believes that its current capital resources, which consist of cash and cash equivalents, are sufficient to fund operations through at least the
next twelve months from the date the accompanying financial statements are issued based on the expected cash burn rate. The Company may be required to
raise  additional  capital  to  fund  future  operations  through  the  sale  of  additional  equity,  incurrence  of  additional  debt  allowed  under  existing  debt
arrangements, the entry into licensing or collaboration agreements with partners, grants or other sources of financing. Sufficient funds may not be available
to the Company at all or on attractive terms when needed from equity or debt financings. If the Company is unable to obtain additional funding from these
or other sources when needed, or to the extent needed, it may be necessary to significantly reduce its controllable and variable expenditures and current rate
of  spending  through  reductions  in  staff  and  delaying,  scaling  back,  or  suspending  certain  research  and  development,  sales  and  marketing  programs  and
other operational goals.

Use of Estimates

The  preparation  of  the  financial  statements  in  accordance  with  GAAP  requires  management  to  make  certain  estimates  and  judgments  that  affect  the
reported amounts of assets, liabilities, revenue recognition, and expenses. Actual results could differ materially from those estimates.

Revenue Recognition

The  Company’s  only  source  of  revenue  in  2020  was  from  its  licensing  agreement  with  The  University  of  Texas  MD  Anderson  Cancer  Center,  (“MD
Anderson”).  In  2019,  the  Company  earned  revenue  from  its  licensing  agreement  with  The  University  of  Texas  MD  Anderson  Cancer  Center,  (“MD
Anderson”) and from grants. Prior to 2019, the Company's only source of revenue was from grants.

Grant Revenue

When grant funds are received after costs have been incurred, the Company records revenue and a corresponding grant receivable. Cash received from
grants in advance of incurring qualifying costs is recorded as deferred revenue and recognized as revenue when qualifying costs are incurred.

License Revenue

The promised services in license agreements consist of license rights to the Company’s intellectual property. When management believes the license to its
intellectual property and products has stand-alone value, the Company recognizes revenue attributed to the license upon delivery.

The  Company  recognizes  revenue  when  control  of  the  promised  goods  or  services  is  transferred  to  its  customers,  in  an  amount  that  reflects  the
consideration  to  which  the  Company  expects  to  be  entitled  in  exchange  for  the  goods  or  services.  In  order  to  achieve  that  core  principle,  a  five-step
approach is applied: (1) identify the contract with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price,
(4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue allocated to each performance obligation when
the Company satisfies the performance obligation. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer,
and is the unit of account for revenue recognition.

The Company may provide options to additional items in the contracts, which are accounted for as separate contracts when the customer elects to exercise
such options, unless the option provides a material right to the customer. The Company evaluates the customer options for material rights, or options to
acquire  additional  goods  or  services  for  free  or  at  a  discount.  If  the  customer  options  are  determined  to  represent  a  material  right,  the  material  right  is
recognized as a separate performance obligation at the outset of the arrangement. Performance obligations are promised goods or services in a contract to
transfer a distinct good or service to the customer and are considered distinct when (i) the customer can benefit from the good or service on its own or
together  with  other  readily  available  resources  and  (ii)  the  promised  good  or  service  is  separately  identifiable  from  other  promises  in  the  contract.  In
assessing whether promised goods or services are distinct, the Company considers factors such as the stage of development of the underlying intellectual
property, the capabilities of the customer to develop the intellectual property on its own or whether the required expertise is readily available and whether
the goods or services are integral or dependent to other goods or services in the contract.

License  agreements  generally  include  certain  milestone  payments.  The  Company  utilizes  the  “most  likely  amount”  method  to  estimate  the  amount  of
variable consideration, to predict the amount of consideration to which it will be entitled for its license agreement. 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
when the uncertainty associated with the variable consideration is subsequently resolved. Milestone, annual maintenance, and royalty payments that are not
within  the  control  of  the  Company  or  the  licensee,  such  as  those  dependent  upon  receipt  of  regulatory  approval,  are  not  considered  to  be  probable  of
achievement until the triggering event occurs. At the end of each reporting period, the Company reevaluates the probability of achievement of each and any
related constraint, and if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis,
which would affect revenue and net loss in the period of adjustment. To date, the Company has not

71

Table of Contents

recognized any development, regulatory or commercial milestones or royalty revenue resulting from its license agreement. Consideration that would be
received for optional goods and/or services is excluded from the transaction price at contract inception.

License Agreement

On  January  22,  2019,  the  Company  entered  into  a  licensing  and  commercialization  agreement  with  MD  Anderson  (the  "MD  Anderson  License
Agreement").  Under  the  MD  Anderson  License  Agreement,  the  Company  granted  MD  Anderson  non-exclusive  rights  in  certain  Caspase-9  and  related
technologies and use of a small molecule known as rimiducid.

During  the  fourth  quarter  of  2019,  and  under  the  terms  of  the  MD  Anderson  License  Agreement,  MD  Anderson  exercised  an  option  to  grant  a  non-
exclusive sublicense of the rights licensed by the Company to MD Anderson under the MD Anderson License Agreement. MD Anderson, as a result of this
exercise, granted a sublicense that entitled the Company to receive as consideration an upfront payment of $5.0 million in license fees as well as additional
future annual maintenance fees, milestone payments related to the achievement of pre-specified development, regulatory, and commercialization events,
and royalties of two percent on net sales of licensed products. 

During the fourth quarter of 2019, the Company recognized $5.0 million of license fee revenue as delivery of the license occurred and the license to its
Caspase-9 intellectual property has stand-alone value. During 2020, the Company has received $0.5 million of maintenance fees under the MD Anderson
License Agreement.

Cancer Research Grant Contract

On August 9, 2017, the Company entered into a Cancer Research Grant Contract (the “CPRIT Agreement”) with the Cancer Prevention Research Institute
of  Texas  (“CPRIT”),  pursuant  to  which  CPRIT  awarded  a  grant  of  approximately  $16.9  million  to  the  Company  to  fund  development  of  rivo-cel  for
hematologic  cancer  (the  “CPRIT  Award”).  The  CPRIT  Award  is  contingent  upon  funds  being  available  during  the  term  of  the  CPRIT  Agreement  and
subject to CPRIT’s ability to perform its obligations under the CPRIT Agreement.

During  2017,  the  Company  received  $4.2  million  in  advance  funding  from  CPRIT,  which  was  recorded  as  deferred  revenue.  During  the  years  ended
December 31, 2020 and 2019, the Company incurred expenses and recognized revenue of $0.0 million and $2.1 million, respectively, for work performed
under the CPRIT grant.

The CPRIT Agreement was due to expire on February 29, 2020, but was terminated early by the Company on January 31, 2020. Upon termination of the
CPRIT  Agreement,  the  Company  reclassified  the  remaining  unexpended  award  proceeds  of  $0.8  million  from  deferred  revenue  to  accrued  liabilities.
During the year ended December 31, 2020, the Company returned the remaining unexpended award proceeds to CPRIT and released the accrued liability.

Cash, Cash Equivalents, and Restricted Cash

The Company considers all short-term, highly liquid investments with maturity of three months or less from the date of purchase and that can be liquidated
without prior notice or penalty, to be cash equivalents.

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the balance sheets that sum to the total of the
same such amounts shown in the statements of cash flows.

(in thousands)
Cash and cash equivalents
Restricted cash
Total cash, cash equivalents and restricted cash shown in the statements of cash flows

December 31, 2020

December 31, 2019

$

$

35,495  $
1,501 
36,996  $

91,028 
2,788 
93,816 

In addition to the restricted cash held and released by CPRIT, there was $1.1 million of restricted cash as of December 31, 2019 in escrow to cover specific
construction of manufacturing improvement costs related to the facility lease. The release of the funds was subject to the authorized completion of certain
aspects of the manufacturing improvements. The funds were released during year ended December 31, 2020.

In connection with the closing of the Asset Purchase Agreement with M.D. Anderson on April 14, 2020, $1.5 million of the cash proceeds received are
subject to certain escrow provisions and recorded as restricted cash. The funds are required to be held for a period of up to 18 months subsequent to the
April 14, 2020 closing date.

Dispositions and Derecognition of Liabilities

72

Table of Contents

Disposition of Assets and Liabilities Held for Sale

In  2019,  the  Company  completed  the  buildout  of  manufacturing  space  at  its  leased  headquarters  in  Houston,  Texas  and  began  in-house  clinical  supply
manufacturing. The facility included capacity in excess of the Company's anticipated current and near-term manufacturing needs and management decided
to seek a partner for the facility with the goal of reducing the Company's costs while maintaining dedicated cell therapy manufacturing capacity to support
the Company's product candidates.

The  disposal  of  the  assets  and  liabilities  of  such  facility  was  completed  on  April  14,  2020,  at  a  purchase  price  of  $15.0  million.  The  disposal  group
consisted of property and equipment, net of $12.0 million, right-of-use assets of $4.8 million, current portion of lease liabilities of $1.4 million and long-
term lease liabilities of $4.6 million. During the year ended December 31, 2020, the Company recognized a net gain of $3.8 million in connection with the
disposal, which is presented within Gain on dispositions, net within the accompanying consolidated statements of operations and comprehensive loss.

Investment Securities

Consistent  with  its  investment  policy,  the  Company  invests  its  cash  allocated  to  fund  its  short-term  liquidity  requirements  with  prominent  financial
institutions in bank depository accounts and institutional money market funds. The Company invests the remainder of its cash in corporate debt securities
and municipal bonds rated at least A quality or equivalent, U.S. Treasury notes and bonds and U.S. and state government agency-backed securities.

The  Company  determines  the  appropriate  classification  of  investment  securities  based  on  whether  they  represent  the  investment  of  funds  available  for
current operations. The Company reevaluates its classification as of each balance sheet date. All investment securities owned are classified as available-for-
sale. The cost of securities sold is based on the specific identification method. Investment securities are recorded as of each balance sheet date at fair value
based  on  quoted  prices  in  active  markets,  with  unrealized  gains  and,  to  the  extent  deemed  temporary,  unrealized  losses  reported  as  accumulated  other
comprehensive  gain  (loss),  a  separate  component  of  stockholders'  (deficit)  equity.  Interest  and  dividend  income  on  investment  securities,  accretion  of
discounts and amortization of premiums and realized gains and losses are included in interest income in the statements of operations and comprehensive
loss.

An  investment  security  is  considered  to  be  impaired  when  a  decline  in  fair  value  below  its  cost  basis  is  determined  to  be  other  than  temporary.  The
Company evaluates whether a decline in fair value of an investment security is below its cost basis is other than temporary using available evidence. In the
event  that  the  cost  basis  of  the  investment  security  exceeds  its  fair  value,  the  Company  evaluates,  among  other  factors,  the  amount  and  duration  of  the
period that the fair value is less than the cost basis, the financial health of and business outlook for the issuer, including industry and sector performance,
and operational and financing cash flow factors, overall market conditions and trends, the Company’s intent to sell the investment security and whether it is
more likely than not the Company would be required to sell the investment security before its anticipated recovery. If a decline in fair value is determined
to be other than temporary, the Company records an impairment charge in the statement of operations and comprehensive loss and establishes a new cost
basis in the investment. To date, the Company has not identified any other than temporary declines in the fair value of its investment securities.

Assets Held for Sale

In  the  fourth  quarter  of  2020,  in  connection  with  the  Company's  restructuring  plan,  Management  elected  to  seek  an  exit  to  its  leased  R&D  facility  in
Houston,  Texas.  As  a  result  of  this  decision,  the  Company  reclassified  the  assets  and  liabilities  associated  with  the  leased  facility  as  held  for  sale.  The
reclassified  assets  and  liabilities  included  a  right-of-use  asset  of  $0.5  million,  property  and  equipment  of  $2.3  million  and  the  related  lease  liability  of
$0.7  million.  Based  on  the  cost  to  exit  the  lease  and  the  net  realizable  value  of  the  related  assets  the  Company  recognized  an  impairment  charge  of
$1.3 million in 2020.

Property and Equipment

Furniture,  equipment  and  software  are  recorded  at  cost  and  are  depreciated  using  the  straight-line  method  over  the  estimated  useful  lives  of  the  related
assets, which range from 3 to 5 years. Leasehold improvements are amortized over the shorter of the estimated useful life or the remaining lease term.

Property and equipment consisted of the following:

73

Table of Contents

(in thousands, except useful lives)
Leasehold improvements
Lab equipment
Office furniture
Manufacturing equipment
Computer and office equipment
Equipment held under capital leases
Software
Total
Less: accumulated depreciation

Property and equipment, net

Estimated Useful Lives
5 Years
5 Years
5 Years
5 Years
5 Years
5 Years
3 Years

to

3

$

December 31, 2020
$

167  $
530 
— 
138 
834 
— 
94 
1,763 
(1,574)

189  $

December 31, 2019
3,944 
5,459 
392 
395 
1,595 
270 
385 
12,440 
(9,911)
2,529 

During the years ended December 31, 2020 and 2019, the Company recorded $1.5 million and $7.0 million of depreciation expense, respectively.

Intangible Assets

Non-refundable upfront payments related to a supply agreement with future benefits have been capitalized as an intangible asset, presented in other assets
on the accompanying consolidated balance sheets and amortized over the term of the agreement. The amortization of the intangible asset is included in
operating expenses in the accompanying consolidated statements of operations and comprehensive loss.

During  the  fourth  quarter  of  2019,  the  Company  recorded  $2.1  million  of  impairment  charges  related  to  the  non-refundable  upfront  payments  for  the
Miltenyi  supply  agreement  that  had  been  capitalized  as  an  intangible  asset.  The  Company  recorded  the  impairment  charge  as  a  “Research  and
development” operating expense within the accompanying consolidated statements of operations and comprehensive loss. There were no other impairment
charges related to long-lived assets for the years ended December 31, 2020 and 2019.

Impairment of Long-Lived Assets

The  Company  reviews  long-lived  assets  for  impairment  when  events  or  changes  in  business  conditions  indicate  that  their  carrying  value  may  not  be
recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to the estimated undiscounted
future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is
recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset.

Accrued Expenses and Other Current Liabilities

Accrued expenses and other liabilities consist of the following:

Accrued payroll
Accrued patient treatment costs
Accrued manufacturing costs
Accrued professional services
Accrued obligations under material supply agreements
Accrued other

Total accrued expenses and other current liabilities

Debt Issuance Costs

December 31, 2020

December 31, 2019

$

$

1,029  $
899 
24 
294 
— 
1,919 
4,165  $

2,032 
1,162 
2,230 
654 
1,121 
2,571 
9,770 

Costs related to debt issuance are presented in the accompanying consolidated balance sheets as a direct deduction from the carrying amount of the debt
liability, consistent with debt discounts and are amortized using the effective interest method. Amortization of debt issuance costs are included in interest
expense in the accompanying statements of operations and comprehensive loss.

74

Table of Contents

Warrant Derivatives

Freestanding  warrants  exercisable  for  multiple  underlying  instruments  are  classified  as  liabilities  in  the  accompanying  consolidated  balance  sheets.  The
Company accounts for these warrants at fair value on the date of issuance and are subject to re-measurement to fair value at each balance sheet date. Any
change  in  fair  value  is  recognized  as  a  component  of  other  income  (expense)  on  the  accompanying  consolidated  statements  of  operations  and
comprehensive loss. The Company estimates the fair value of these liabilities using the binomial option model, adjusted for the effect of dilution, because it
embodies all of the requisite assumptions (including trading volatility, estimated terms, dilution and risk-free rates) necessary to determine the fair value of
this instrument. The Company will continue to adjust the liability for changes in fair value until the earlier of the exercise or expiration of the warrants or a
change in control, as defined. The warrants are freely exercisable at any time from the issuance date until the expiration date, provided exercise does not
cause a warrant holder to exceed a pre-determined beneficial ownership limit.

The  Company  estimates  the  fair  value  of  these  liabilities  using  the  Black-Scholes  valuation  technique,  which  utilizes  assumptions  including  (i)  the  fair
value of the underlying stock at the valuation measurement date, (ii) volatility of the price of the underlying stock, (iii) the expected term, and (iv) risk-free
interest rates.

Private Placement Option

The Company has entered into a security purchase agreement that contains a call option on preferred shares that are puttable outside the control of the
Company. The Company recorded the option as a liability and measured the fair value of the option at the time of issuance. The Company will re-measure
the option to fair value at each balance sheet date and record changes in fair value in other income (expense) in the accompanying consolidated statement
of operations and comprehensive loss at each reporting period. Offering expenses arising from the issuance of the private placement option were expensed
as incurred.

The  Company  estimates  the  fair  value  of  these  liabilities  using  a  binomial  lattice  model,  which  utilizes  assumptions  including  (i)  the  fair  value  of  the
underlying stock at the valuation measurement date, (ii) volatility of the price of the underlying stock, (iii) the expected term, and (iv) risk-free interest
rates.

Preferred Stock

Preferred shares issued by the Company that are subject to mandatory redemption are classified as liability instruments in the accompanying consolidated
balance sheets and are measured at fair value at the date of issuance. Conditionally redeemable preferred shares (including preferred shares that feature
redemption rights that are either within the control of the holder or subject to redemption upon the occurrence of uncertain events not solely within the
Company’s  control)  are  classified  within  mezzanine  equity  in  the  accompanying  consolidated  balance  sheets.  At  all  other  times,  preferred  shares  are
classified within stockholders’ (deficit) equity.

Operating Leases

At the inception of a contractual arrangement, the Company determines whether the contract contains a lease by assessing whether there is an identified
asset and whether the contract conveys the right to control the use of the identified asset in exchange for consideration over a period of time. If both criteria
are met, upon lease commencement, the Company records a lease liability which represents the Company’s obligation to make lease payments arising from
the lease, and a corresponding right-of-use (“ROU”) asset which represents the Company’s right to use an underlying asset during the lease term.

Operating leases are recognized as right-of-use, or ROU, assets and operating lease liabilities on the balance sheet based on the present value of the future
minimum  lease  payments  over  the  lease  term  at  commencement  date  calculated  using  the  Company's  incremental  borrowing  rate  applicable  to  the
underlying asset unless the implicit rate is readily determinable. Any lease incentives received are deferred and recorded as a reduction of the ROU asset
and amortized over the term of the lease. Rent expense, comprised of amortization of the ROU asset and the implicit interest accreted on the operating lease
liability, is recognized on a straight-line basis over the lease term. The Company determines the lease term as the noncancellable period of the lease and
may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise such options. Leases with a term of 12
months or less are not recognized on the balance sheets.

Fair Value of Financial Instruments

Fair value is defined as the exchange price that would be received for an asset or an exit price paid to transfer a liability in an orderly transaction between
market participants in a principal market on the measurement date.

Accounting  standards  include  disclosure  requirements  around  fair  values  used  for  certain  financial  instruments  and  establish  a  fair  value  hierarchy.  The
three-tier hierarchy defines a three-tiered valuation hierarchy for disclosures that prioritizes valuation inputs into three levels based on the extent to which
inputs used in measuring fair value are observable in the market, as described further in Note 2.

75

Table of Contents

Observable inputs reflect readily obtainable data from independent sources, and unobservable inputs reflect the Company’s market assumptions.

These inputs are classified into the following hierarchy:

Level  1  Inputs  -  quoted  prices  (unadjusted)  in  active  markets  for  identical  assets  that  the  reporting  entity  has  the  ability  to  access  at  the
measurement date;

Level 2 Inputs - inputs other than quoted prices included within Level 1 that are observable for the asset, either directly or indirectly; and

    Level 3 Inputs - unobservable inputs for the assets.

The  categorization  of  a  financial  instrument  within  the  valuation  hierarchy  is  based  upon  the  lowest  level  of  input  that  is  significant  to  the  fair  value
measurement.

The Company believes the recorded values of its financial instruments, including cash and cash equivalents, accounts payable, accrued liabilities, and debt
approximate their fair values due to the short-term nature of these instruments.

Financial Instruments and Credit Risks

Financial instruments that potentially subject the Company to credit risk include cash and cash equivalents and accounts receivable. Cash is deposited in
demand accounts in federally insured domestic institutions to minimize risk. Insurance is provided through the Federal Deposit Insurance Corporation and
Security Investor Protection Corporation. Although the balances in these accounts exceed the federally insured limit from time to time, the Company has
not incurred losses related to these deposits.

Equity Issuance Costs

Equity  issuance  costs  represent  costs  paid  to  third  parties  in  order  to  obtain  equity  financing.  These  costs  have  been  netted  against  the  proceeds  of  the
equity issuances.

Licenses and Patents

Licenses and patent costs for technologies that are utilized in research and development and have no alternative future use are expensed as incurred. Costs
related to the license of patents from third parties and internally developed patents are classified as research and development expenses. Legal costs related
to patent applications and maintenance are classified as general and administrative expenses in the accompanying consolidated statements of operations and
comprehensive loss.

Research and Development

Research and development expenses consist of expenses incurred in performing research and development activities, including compensation and benefits
for research and development employees and consultants, facilities expenses, overhead expenses, cost of laboratory supplies, manufacturing expenses, fees
paid to third parties and other outside expenses.

Research  and  development  costs  are  expensed  as  incurred.  Clinical  trial  and  other  development  costs  incurred  by  third  parties  are  expensed  as  the
contracted work is performed. The Company accrues for costs incurred as the services are being provided by monitoring the status of the clinical trial or
project and the invoices received from its external service providers. The Company estimates depend on the timeliness and accuracy of the data provided
by  the  vendors  regarding  the  status  of  each  project  and  total  project  spending.  The  Company  adjusts  its  accrual  as  actual  costs  become  known.  Where
contingent  milestone  payments  are  due  to  third  parties  under  research  and  development  arrangements,  the  milestone  payment  obligations  are  expensed
when the milestone events are achieved.

76

Table of Contents

Collaboration Agreements

The Company enters into collaboration agreements that include varying arrangements regarding which parties perform and bear the costs of research and
development activities. The Company may share the costs of research and development activities with a collaborator, or the Company may be reimbursed
for  all  or  a  significant  portion  of  the  costs  of  the  Company's  research  and  development  activities.  The  Company  records  its  internal  and  third-party
development costs associated with these collaborations as research and development expenses. When the Company is entitled to reimbursement of all or a
portion of the research and development expenses that it incurs under a collaboration, the Company records those reimbursable amounts as a deduction to
the  research  and  development  expenses.  If  the  collaboration  is  a  cost-sharing  arrangement  in  which  both  the  Company  and  its  collaborator  perform
development  work  and  share  costs,  the  Company  also  recognizes,  as  research  and  development  expenses  in  the  period  when  its  collaborator  incurs
development expenses, the portion of the collaborator's development expenses that the Company is obligated to reimburse.

Contract Manufacturing Services

Contract manufacturing services are expensed as incurred. Prepaid expenses are capitalized and amortized as services are performed.

Share-Based Compensation

The Company accounts for share-based compensation based on the measurement and recognition of compensation expense for all share-based payment
awards made to employees, directors and consultants to be recognized in the financial statements, based on their fair value.

The Company calculates the fair value of stock options on the date of grant using the Black-Scholes pricing model, which requires a number of estimates,
including the expected life of awards, interest rates, stock volatility and other assumptions. Restricted stock is measured based on the fair market value of
the  underlying  stock  on  the  date  of  grant.  If  the  awards  are  classified  as  liability  awards,  the  fair  value  is  remeasured  at  each  reporting  date  and  the
compensation  expense  is  adjusted  accordingly.  Additionally,  the  Company  applies  a  forfeiture  rate  to  estimate  the  number  of  grants  that  will  ultimately
vest, as applicable, and adjust the expense as these awards vest. All of the Company's current equity awards are service based awards and the share-based
compensation cost is being recognized over the requisite service period of the awards on a straight-line basis.

Income Taxes

Income  taxes  are  accounted  for  under  the  asset  and  liability  method.  Deferred  tax  assets  and  liabilities  are  recognized  for  the  future  tax  consequences
attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. This method
also requires the recognition of future tax benefits such as net operating loss and tax credit carry forwards, to the extent that realization of such benefits is
more  likely  than  not.  A  valuation  allowance  is  recorded  when  the  realization  of  future  tax  benefits  is  uncertain.  The  Company  records  a  valuation
allowance  for  the  full  amount  of  deferred  tax  assets,  which  would  otherwise  be  recorded  for  tax  benefits  relating  to  the  operating  loss  and  tax  credit
carryforwards, as realization of such deferred tax assets cannot be determined to be more likely than not.

Deferred  tax  assets  and  liabilities  are  measured  using  enacted  tax  rates  expected  to  apply  to  taxable  income  in  the  years  in  which  those  temporary
differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the statement of
operations in the period that includes the enactment date.

As  of  December  31,  2020,  the  Company  had  recorded  a  full  valuation  allowance  on  its  net  U.S.  and  foreign  deferred  tax  assets  because  the  Company
expects that it is more likely than not that its deferred tax assets will not be realized in the foreseeable future. Should the actual amounts differ from our
estimates, the amount of the valuation allowance could be materially impacted.

The Company accounts for uncertain tax positions in accordance with the provisions of the Accounting Standards Codification (ASC) 740, Income Taxes.
When  uncertain  tax  positions  exist,  the  Company  recognizes  the  tax  benefit  of  tax  positions  to  the  extent  that  the  benefit  will  more  likely  than  not  be
realized. The determination as to whether the tax benefit will more likely than not be realized is based upon the technical merits of the tax position as well
as consideration of the available facts and circumstances. As of December 31, 2020 and 2019, the Company had no uncertain tax positions and no interest
or  penalties  have  been  charged  for  the  years  ended  December  31,  2020  and  2019.  The  Company  is  subject  to  routine  audits  by  taxing  jurisdictions;
however, there are currently no audits for any tax periods in progress. The tax years 2005 through 2020 remain open to examination by the U.S. Internal
Revenue Service.

77

Table of Contents

Comprehensive Loss

Comprehensive loss is defined as the change in equity of a business enterprise during a period, from transactions, and other events and circumstances from
non-owner  sources.  Components  of  other  comprehensive  loss  includes,  among  other  items,  unrealized  gains  and  losses  on  the  changes  in  fair  value  of
investments and unrealized gains and losses on the change in foreign currency exchange rates. These components are added, net of their related tax effect,
to the reported net loss to arrive at comprehensive loss.

Net Loss and Net Loss per Share of Common Stock Attributable to Common Stockholders

Basic net loss per share attributable to common stockholders is calculated by dividing the net loss attributable to common stockholders by the weighted-
average number of shares of common stock outstanding during the period without consideration for common stock equivalents. Diluted earnings per share
is based on the treasury stock method and includes the effect from potential issuance of ordinary shares, such as shares issuable pursuant to the conversion
of preferred stock to common stock, exercise of warrants to purchase common stock, exercise of stock options, and vesting of restricted stock units.

The following outstanding shares of common stock equivalents were excluded from the computations of diluted net loss per shares of common stock
attributable to common stockholders for the periods presented as the effect of including such securities would be anti-dilutive.

Common stock equivalents:
Redeemable convertible series 1 preferred stock
Warrants to purchase common stock
Private placement option
Options to purchase common stock
Unvested shares of restricted stock units

Total common stock equivalents

New Accounting Requirements and Disclosures

Fair Value Measurement

December 31, 2020

December 31, 2019

Number of Shares

4,520,000
11,616,080
9,675,000
1,510,968
129,861
27,451,909

5,380,000 
5,750,000 
—
567,842
6,359
11,704,201

In  August  2018,  the  FASB  issued  ASU  No.  2018-13,  Fair  Value  Measurement  (Topic  820):  Disclosure  Framework—Changes  to  the  Disclosure
Requirements for Fair Value Measurement, which modifies fair value disclosures and removes some disclosure requirements for both public and private
companies. In addition, public companies are subject to some new disclosure requirements which requires to disclose the changes in unrealized gains and
losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the
range  and  weighted  average  of  significant  unobservable  inputs  used  to  develop  Level  3  fair  value  measurements.  ASU  No.  2018-13  is  effective  for  all
entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. The Company does
not expect the adoption of this standard to have a material effect on its financial statements. 

Financial Instruments – Credit Losses

In  June  2016,  the  FASB  issued  ASU  No.  2016-13,  Financial  Instruments  —  Credit  Losses  (Topic  326):  Measurement  of  Credit  Losses  on  Financial
Instruments, which requires the measurement of all expected credit losses for financial assets including trade receivables held at the reporting date based on
historical  experience,  current  conditions,  and  reasonable  and  supportable  forecasts.  ASU  No.  2016-13  is  effective  for  fiscal  years,  and  interim  periods
within those fiscal years, beginning after December 15, 2019. The Company adopted the standard effective January 1, 2020 with no material effect on its
financial  statements.  Subsequent  to  the  issuance  of  ASU  2016-13,  the  FASB  issued  ASU  2018-19,  Codification  Improvements  to  Topic  326,  Financial
Instruments  -  Credit  Losses.  This  ASU  does  not  change  the  core  principle  of  the  guidance  in  ASU  2016-13,  instead  these  amendments  are  intended  to
clarify  and  improve  operability  of  certain  topics  included  within  the  credit  losses  guidance.  The  FASB  also  subsequently  issued  ASU  No.  2019-04,
Codification Improvements to Topic 326, Financial Instruments—Credit Losses, Derivatives and Hedging (Topic 815), and Financial Instruments (Topic
842), which did not change the core principle of the guidance in ASU 2016-13 but clarified that expected recoveries of amounts previously written off and
expected to be written off should be included in the valuation account and should not exceed amounts previously written off and expected to be written off.
The guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2019 for public business entities, excluding
smaller reporting companies. Early adoption is permitted. As a smaller reporting company, the guidance will be effective for the Company during the first
quarter of 2023. The Company is in the process of assessing the impact adoption will have on its consolidated financial statements.

78

Table of Contents

Income Taxes

In  December  2019,  the  FASB  issued  ASU  No.  2019-12,  Simplifying  the  Accounting  for  Income  Taxes  (Topic  740).  The  guidance  eliminates  certain
exceptions for recognizing deferred taxes for investments, performing intraperiod allocation and calculating income taxes in interim periods. This guidance
also includes guidance to reduce complexity in certain areas, including recognizing deferred taxes for tax goodwill and allocating taxes to members of a
consolidated  group.  ASU  2019-12  is  effective  for  annual  and  interim  periods  in  fiscal  years  beginning  after  December  15,  2020.  Early  adoption  is
permitted. The Company is currently evaluating the impact this change will have on its consolidated financial statements.

Investments

In January 2020, the FASB issued Accounting Standards Update No. 2020-01, Investments—Equity Securities (Topic 321), Investments—Equity Method
and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815)—Clarifying the Interactions between Topic 321, Topic 323, and Topic 815 (a
consensus of the Emerging Issues Task Force), which clarifies the interaction of the accounting for equity securities, investments accounted for under the
equity method, and certain forward contracts and purchased options. This update is effective for fiscal years beginning after December 15, 2020, and
interim periods within those fiscal years, and early adoption is permitted. The Company is in the process of determining the impact the adoption will have
on its consolidated financial statements as well as whether to early adopt the new guidance.

79

NOTE 2 - FAIR VALUE OF MEASUREMENTS AND INVESTMENT SECURITIES

Investment Securities

The following tables present the Company’s investment securities (including those classified on the Company’s balance sheet as cash equivalents) that are
measured at fair value on a recurring basis as of December 31, 2020 and 2019:

(in thousands)
Cash Equivalents:
Money market funds and treasury bills

Total Cash Equivalents

Fair Value at December 31, 2020

Fair Value at December 31, 2019

Level 1

Level 2

Level 3

Level 1

Level 2

Level 3

$
$

27,463  $
27,463  $

—  $
—  $

—  $
—  $

77,170  $
77,170  $

—  $
—  $

— 
— 

As of December 31, 2020, the $1.5 million of restricted cash, on the Company's balance sheet is held in a money market fund.

Money market funds, U.S. Treasury, U.S. government agency-backed securities, corporate debt securities and municipal bonds are valued based on various
observable inputs such as benchmark yields, reported trades, broker/dealer quotes, benchmark securities and bids.

Warrant Derivative Liability and Private Placement Option Liability

The  Company's  financial  liabilities  recorded  at  fair  value  on  a  recurring  basis  include  the  fair  values  of  the  warrant  derivative  liability  and  the  private
placement  option  liability.  As  of  December  31,  2020,  the  fair  values  of  the  warrant  derivative  liability  and  the  private  placement  option  liability  are
classified as current liabilities in the accompanying consolidated balance sheets. These liabilities will be shown as current liabilities on the balance sheet
when it is deemed more probable than not by management to be exercised within one year.

Inputs used to determine estimated fair value (Level 3) of the warrants include the fair value of the underlying stock relative to the warrant exercise price at
the valuation measurement date, volatility of the price of the underlying stock, the expected term of the warrants, and risk-free interest rates.

The fair value of the warrants has been estimated with the following weighted-average assumptions, including the most sensitive input, volatility:

Risk-free interest rate
Volatility
Expected life (years)

December 31, 2020

December 31, 2019

0.46 %
90 %
5.64

1.83 %
78.67 %
6.64

The fair value of the private placement option has been estimated with the following weighted-average assumptions, including the most sensitive input,
volatility:

Risk-free interest rate
Volatility of underlying stock price
Expected term (years)

December 31, 2020

0.77%
90.00%
7.00

The following table provides the warrant derivative and private placement option liabilities reported at fair value and measured on a recurring basis:

(in thousands)
Warrant derivative liability
Private placement option liability

Total fair value

$

$

Fair Value at December 31, 2020

Fair Value at December 31, 2019

Level 1

Level 2

Level 3

Level 1

Level 2

Level 3

10,345  $
7,803 
18,148  $

—  $
— 
—  $

—  $
— 
—  $

52,184 
12,094 
64,278 

—  $
— 
—  $

—  $
— 
—  $

80

The  ending  balance  of  the  Level  3  financial  instruments  presented  above  represents  our  best  estimate  of  valuation  and  may  not  be  substantiated  by
comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instruments.

81

NOTE 3 - LEASES

The Company determines whether an arrangement is a lease at its inception. Operating leases relate primarily to office space and manufacturing facilities
with remaining lease terms of two  to  three  years.  If  operating  leases  include  options  to  extend  the  lease  term,  management  will  consider  the  options  in
determining the lease term used to establish the Company's ROU assets and lease liabilities.

The  Company  entered  into  a  lease  agreement  for  office  and  laboratory  space  in  Houston,  Texas  commencing  in  July  2020  and  expiring  in  2023.  The
Company recorded ROU assets of $0.5 million and a corresponding lease liability of $0.6 million upon lease commencement.

In October 2020, in connection with the Company's restructuring plan, Management elected to seek an exit to its leased office and laboratory space in
Houston, Texas. As a result of this decision, the Company reclassified the assets and liabilities associated with the leased facility as held for sale. The
reclassified assets included a right-of-use asset of $0.5 million, property and equipment of $2.3 million, and related lease liability of $0.7 million. Based on
the cost to exit the lease and the net realizable value of the related assets the Company recognized an impairment charge of $1.3 million in 2020.

As most of the Company's leases do not provide an implicit rate, the Company's incremental borrowing rate is based on the information available at lease
commencement date and was used to determine the present value of lease payments. Components of lease cost are as follows:

(in thousands)

Finance lease cost:

Amortization of leased assets

Interest on lease liabilities

Operating lease cost
Short-term lease cost

Total lease cost

Weighted-average remaining lease term:

Operating leases
Finance leases

Weighted-average discount rate:

Operating leases
Finance leases

Year Ended December 31, 2020

Year Ended December 31, 2019

$

$

74 

21 

814 
582 
1,491 

$

$

1.7 years
1.4 years

11.47 %
13.05 %

61 

25 

2,135 
296 
2,517 

5.2 years
2.4 years

12.10 %
13.40 %

Supplemental cash flow information and non-cash activity related to the Company's operating and finance leases are as follows:

(in thousands)
Cash paid for amounts included in the measurement of lease liabilities:

Operating cash flows from operating leases
Operating cash flows from finance leases
Financing cash flows from finance leases

Non-cash activity:

Right-of-use assets obtained in exchange for lease obligations

Maturities of lease liabilities by year for leases are as follows:

(in thousands)
2021
2022
2023
Total lease payments
Less: Imputed interest

Present value of lease liabilities

$

$

$

$

82

Year Ended December 31, 2020

Year Ended December 31, 2019

950  $
21 
74 

—  $

Operating Leases

Financing Leases

499  $
306 
14 
819 
(79)
740  $

2,378 
25 
47 

2,263 

90 
39 
— 
129 
(12)
117 

NOTE 4 - DEBT

Oxford Loan

On December 21, 2017 (the “Oxford Closing Date”), the Company entered into a loan and security agreement (the “Oxford Loan Agreement”) with Oxford
Finance LLC, as the collateral agent and the lenders listed on Schedule 1.1 thereto or otherwise party thereto from time to time (the "Lenders"), pursuant to
which  the  Company  borrowed  $35.0  million  in  a  single  term  loan  (the  “Oxford  Loan”)  on  the  Oxford  Closing  Date.  On  the  Oxford  Closing  Date,  the
Company used approximately $32.9 million of the proceeds from the Oxford Loan to repay its indebtedness to a previous lender.

On  December  24,  2019,  the  Company  entered  into  a  First  Amendment  to  Loan  and  Security  Agreement  (the  “First  Amendment”)  with  Oxford,  in
connection  with  the  Asset  Sale  with  M.D.  Anderson.  On  March  31,  2020,  the  Company  entered  into  a  Second  Amendment  to  Loan  and  Security
Agreement (the "Second Amendment") with Oxford Finance LLC, in connection with the Asset Sale. The loan and security agreement with Oxford, as
amended by the First and Second Amendment, is referred to as the "Oxford Loan Agreement."

The Company’s obligations under the Oxford Loan Agreement were secured by a first priority security interest in substantially all of the Company’s current
and future assets, including its intellectual property. The Company also agreed not to encumber its intellectual property assets, except as permitted by the
Oxford Loan Agreement. The Oxford Loan originally matured on December 1, 2022 (the “Oxford Maturity Date”) and was originally interest-only through
January 31, 2020, followed by 35 equal monthly payments of principal and unpaid accrued interest. The Oxford Loan bore interest at a floating per annum
rate equal to (i) 7.25% plus (ii) the greater of (a) the 30-day U.S. Dollar LIBOR rate reported in The Wall Street Journal on the last business day of the
month that immediately precedes the month in which the interest will accrue and (b) 1.25%.

Pursuant to the Second Amendment, the Loan Agreement was amended to, among other things: (i) provide for Oxford's and the Lenders’ consent to the
Company’s consummation of the Asset Sale with M.D. Anderson, provided such sale occurs on or prior to June 30, 2020; (ii) if such Asset Sale occurs on
or prior to June 30, 2020, extend the interest-only period through as late as July 31, 2021; (iii) if Asset Sale closes on or prior to June 30, 2020, provide for
a partial repayment to the Lenders of a significant percentage of the proceeds of the asset sale that varies in accordance with the timing of closing and the
associated  amortization  schedule,  a  portion  of  which  will  be  applied  as  partial  payment  of  the  Final  Payment  Percentage  (as  defined  in  the  Loan
Agreement); and (iv) grant the Lenders and Oxford a security interest in the Company’s intellectual property as of the date of the Second Amendment, in
each case as set forth in the Second Amendment. The sale of certain assets subject to the Second Amendment closed on April 14, 2020. Pursuant to the
Second Amendment, the closing of the Asset Sale to M.D. Anderson triggered the Company’s obligation to provide partial repayment to the Lenders of
$7.0  million,  of  which  $0.6  million  was  applied  as  partial  payment  of  the  Oxford  Final  Payment  Fee.  The  interest-only  period  was  extended  through
December 31, 2020.

The  Company  paid  expenses  related  to  the  Oxford  Loan  Agreement  of  $0.1  million,  which,  along  with  the  final  facility  charge  of  $3.0  million,  were
recorded  as  deferred  issuance  costs,  which  offset  long-term  debt  on  the  Company's  consolidated  balance  sheet.  The  deferred  issuance  costs  were  being
amortized over the term of the loan as interest expense using the effective interest method. During the years ended December 31, 2020 and 2019, interest
expense of amortized deferred issuance costs included $0.6 million and $0.9 million, respectively.

During November 2020, the Company entered into an agreement for the early settlement of all debt obligations under the Oxford Loan Agreement. During
the same month, the Company remitted payment of $27.4 million, which included full repayment of the outstanding principal balance, the Oxford Final
Payment Fee, and accrued interest. The Company recorded a gain on extinguishment of $0.1 million in the accompanying statements of operations and
comprehensive loss.

83

NOTE 5 - PUBLIC OFFERING AND PRIVATE PLACEMENT

November 2020 Underwritten Offering

In  November  2020,  the  Company  closed  an  underwritten  offering  of  1,040,000  shares  of  its  common  stock,  pre-funded  warrants  to  purchase  3,109,378
shares of its common stock, and accompanying common warrants to purchase up to an aggregate of 4,149,378 shares of its common stock. Each share of
common stock and pre-funded warrant to purchase one share of common stock was sold together with a common warrant to purchase one share of common
stock. The public offering price of each share of common stock and accompanying common warrant was $6.025 and $6.024 for each pre-funded warrant.
The  pre-funded  warrants  were  immediately  exercisable  at  a  price  of  $0.001  per  share  of  common  stock.  The  common  warrants  were  immediately
exercisable at an exercise price of $6.50 per share of common stock and will expire five years from the date of issuance. The shares of common stock and
pre-funded warrants, and the accompanying common warrants, were issued separately and were immediately separable upon issuance. The gross proceeds
to the Company were approximately $25.0 million before deducting underwriting discounts and commissions and other offering expenses.

August 2019 Public Offering

On August 16, 2019, the Company entered into an underwriting agreement (the “Underwriting Agreement”) with Jefferies LLC and Wells Fargo Securities,
LLC,  as  representatives  of  the  several  underwriters  named  therein  (the  “Underwriters”),  relating  to  an  underwritten  public  offering  (the  “Offering”)  of
575,000 shares of the Series 1 Redeemable Convertible Non-Voting Preferred Stock of the Company (the “Series 1 Preferred Stock”) and warrants (the
“Public Warrants”) to purchase up to 5,750,000 shares of its common stock. Each share of Series 1 Preferred Stock was being sold together with a warrant
to purchase 10 shares of common stock at a combined price to the public of $100.00. Under certain circumstances, each warrant to purchase 10 shares of
common stock will be exercisable, at the irrevocable election of the holder, for one share of Series 1 Preferred Stock. The offering closed on August 21,
2019, and the net proceeds to the Company from the Offering was approximately $53.8 million, after deducting underwriting discounts and commissions
and offering expenses payable by the Company, and excluding any proceeds that the Company may receive upon exercise of the Public Warrants.

All of the Public Warrants sold in the Offering have an exercise price of $13.00 per share of common stock or, in certain circumstances, for $130.00 per
share of Series 1 Preferred Stock, subject to proportional adjustments in the event of stock splits or combinations or similar events. The Public Warrants
were immediately exercisable upon issuance, provided that the holder is prohibited, subject to certain exceptions, from exercising a warrant for shares of
common stock to the extent that immediately prior to or after giving effect to such exercise, the holder, together with its affiliates and other attribution
parties, would own more than 9.99% of the total number of shares of common stock then issued and outstanding, which percentage may be changed at the
holder’s  election  to  a  lower  percentage  at  any  time  or  to  a  higher  percentage  not  to  exceed  19.99%  upon  61  days’  notice  to  the  Company.  The  Public
Warrants will expire on August 21, 2026, unless exercised prior to that date.

Private Placement

On August 16, 2019, the Company entered into a securities purchase agreement (the “Securities Purchase Agreement”) with certain institutional investors
named therein (the “Purchasers”), pursuant to which the Company agreed to issue in a private placement (i) 350,000 shares of its Series 2 Redeemable
Convertible  Non-Voting  Preferred  Stock  (the  “Series  2  Preferred  Stock”),  at  a  purchase  price  of  $100.00  per  share,  and  related  warrants  (the  “Private
Warrants”) to purchase up to 2,800,000 shares of common stock at an exercise price of $10.00 per share, and (ii) 250,000 shares of its Series 3 Redeemable
Convertible Non-Voting Preferred Stock (the “Series 3 Preferred Stock” and, together with the Series 1 Preferred Stock and Series 2 Preferred Stock, the
“Preferred Stock”), at a purchase price of $140.00 per share, and related warrants (also, “Private Warrants”) to purchase up to 875,000 shares of common
stock at an exercise price of $14.00 per share. The purchase and sale of the securities issuable under the private placement agreement may occur in two or
more separate closings, each to be conducted at the Purchasers’ discretion within five days’ notice to the Company. The purchase and sale was subject to
the  Company’s  obtaining  stockholder  approval  for  additional  authorized  shares  of  Common  Stock  or  a  reverse  stock  split  (the  “Required  Stockholder
Approval”), which occurred in the first quarter of 2020. The right of the Purchasers to purchase such securities will expire two and a half years after the
Required Stockholder Approval, on June 15, 2022, with respect to the Series 2 Preferred Stock, and three years after such stockholder approval, on January
15, 2023, with respect to the Series 3 Preferred Stock, if not exercised prior to that date.

The  Company  received  $11.2  million  in  net  option  fee  proceeds,  net  of  offering  costs,  upon  the  execution  of  the  Securities  Purchase  Agreement.  Total
offering costs incurred by the Company related to the Public Warrants, Private Warrants and options amounted to $3.0 million.

The following table reflects the fair value roll forward reconciliation of the warrant derivative and private placement option liabilities for the period ended
December 31, 2020:

84

(in thousands)
Balance, December 31, 2019
Change in fair value

Balance, December 31, 2020

Warrant Derivative Liability

Private Placement Option
Liability

Total

$

$

52,184  $
(41,839)
10,345  $

12,094  $
(4,291)
7,803  $

64,278 
(46,130)
18,148 

NOTE 6 - REDEEMABLE CONVERTIBLE PREFERRED STOCK
In August 2019, the Company sold Series 1 Preferred Stock pursuant to the Offering. The Company has 10,000,000 authorized shares of preferred stock
with a par value of $0.01, of which the Company has designated 1,517,500 shares as Series 1 redeemable convertible non-voting preferred stock, 350,000
shares as Series 2 redeemable convertible non-voting preferred stock and 250,000 shares as Series 3 redeemable convertible non-voting preferred stock.
There were 452,000 shares and 538,000 shares of Series 1 Preferred Stock issued and outstanding as of December 31, 2020 and 2019, respectively. There
were  no  shares  of  Series  2  or  3  Preferred  Stock  issued  and  outstanding  as  of  December  31,  2020  and  2019.  The  Series  1  Preferred  Stock  was  issued
together with warrants for a combined purchase price of $100.00 per share of Series 1 Preferred Stock and one warrant to purchase 10 shares of common
stock. During the year ended December 31, 2020 and 2019, 86,000 shares and 37,000 shares, respectively of Series 1 Preferred Stock were converted to
common stock.

As  of  December  31,  2020  and  2019,  the  Company  classified  the  Series  1  preferred  stock  within  mezzanine  equity,  as  the  Series  1  preferred  stock  is
redeemable at the option of the holders upon passage of time, which is outside of the Company’s control to prevent.

The Series 1 Preferred Stock is not currently redeemable and is only redeemable upon a fundamental change at a redemption price. The Company does not
believe  a  fundamental  change  is  considered  probable  until  it  occurs.  Subsequent  adjustment  of  the  amount  presented  within  mezzanine  equity  to  its
redemption amount is unnecessary if it is not probable that the instrument will become redeemable. As (i) the Series 1 Preferred Stock is only redeemable
upon a fundamental change, the occurrence of which is not probable, and (ii) the occurrence of Transition Date (defined below) is probable, the Company
did not accrete the Series 1 Preferred Stock to its redemption amount.

Optional Conversion

Each share of Preferred Stock is initially convertible into 10 shares of Common Stock. The conversion price at which Preferred Stock may be converted
into shares of common stock, is subject to adjustment in connection with certain specified events.

Redemption

Until  the  applicable  Transition  Date  (defined  below),  at  any  time  on  or  after  the  date  that  is  the  fifth  (5th)  anniversary  of  the  initial  issue  date  of  the
applicable series of preferred stock, all or any portion of the preferred stock is redeemable at the option of the holder at a redemption price of $100.00 per
share (for Series 1 and Series 2 Preferred Stock) and $140.00 per share (for Series 3 Preferred Stock).  The “Transition Date” means:

• With respect to the Series 1 Preferred Stock, the first date following August 21, 2021, on which each of the Conditions (as defined below) is met

(the “Series 1 Transition Date”);

• With respect to the Series 2 Preferred Stock, the first date following the six-month anniversary of the Series 1 Transition Date on which each of

the Conditions is met (the “Series 2 Transition Date”); and

• With respect to the Series 3 Preferred Stock, the first date following the six-month anniversary of the Series 2 Transition Date on which each of

the Conditions is met.

The “Conditions” mean: (1) the closing price of the Company’s common stock has been equal to or exceeded $25.00 per share for 180 calendar days (for
determining if the Conditions are met for the Series 1 Preferred Stock and Series 2 Preferred Stock) and $35.00 per share (for the Series 3 Preferred Stock)
for 180 calendar days; (2) the 50-day average trading volume of the Company’s common stock on the Nasdaq stock market is greater than 50,000 shares;
and (3) a Phase 3 or Phase 2 pivotal clinical trial for one of the Company’s CAR-T product candidates has been initiated, meaning that at least one clinical
trial site has been activated.

Dividends

85

Shares of Preferred Stock will be entitled to receive dividends equal to (on an as-if-converted-to-common stock basis), and in the same form and manner as,
dividends actually paid on shares of common stock.

Liquidation

Until the applicable Transition Date, in the event of a liquidation, dissolution, winding up or deemed liquidation, holders of the Preferred Stock will receive
a payment equal to the applicable per share purchase price of their Preferred Stock before any proceeds are distributed to the holders of Common Stock.
The liquidation preferences, protective voting provisions and redemption rights of the Preferred Stock will terminate upon the occurrence of certain events.

Voting

Shares of Preferred Stock will generally have no voting rights, except to the extent expressly provided in the Company’s certificate of incorporation or as
otherwise required by law.

86

NOTE 7 - STOCKHOLDERS' EQUITY AND SHARE-BASED COMPENSATION PLANS

Stockholder's Equity

On October 5, 2018, the Company entered into an Open Market Sale Agreement (the “Sale Agreement”) with Jefferies LLC ("Jefferies"), as sales agent,
pursuant  to  which  the  Company  may  offer  and  sell,  from  time  to  time,  through  Jefferies,  shares  of  the  Company’s  common  stock  having  an  aggregate
offering  price  of  up  to  $60.0  million.  The  shares  will  be  offered  and  sold  pursuant  to  the  Company’s  prospective  supplement  to  its  shelf  registration
statement on Form S-3 (the “Prospective Supplement”). During the year ended December 31, 2019, the Company received $9.0 million in net proceeds
from  the  sale  of  259,115  shares  of  its  common  stock  in  the  open  market.  On  August  16,  2019,  in  connection  with  the  Public  Offering,  the  Company
delivered written notice to Jefferies that the Company was suspending and terminating the Prospectus Supplement related to the shares of its common stock
issuable pursuant to the Sale Agreement. The Company will not make any sales of its securities pursuant to the Sales Agreement, unless and until a new
prospectus supplement is filed. Other than the termination of the Prospectus Supplement, the Sale Agreement remains in full force and effect.

Share-Based Compensation Plans

The Company has five share-based compensation plans, including the 2019 Equity Incentive Plan the ("2019 Plan") which was adopted in June 2019. Each
plan authorizes the granting of shares of common stock and options to purchase common stock to employees and directors of the Company, as well as non-
employee consultants, and allows the holder of the option to purchase common stock at a stated exercise price. The only plan under which the Company
may currently grant equity awards is the 2019 Equity Incentive Plan although there remain outstanding awards under the other four plans. Options vest
according to the terms of the grant, which may be immediately or based on the passage of time, generally over four years, and have a term of up to 10
years. Unexercised stock options terminate on the expiration date of the grant. The Company recognizes the share-based compensation expense over the
requisite service period of the individual grantees, which generally equals the vesting period.

2019 Equity Incentive Plan

The 2019 Plan, is designed to secure and retain the services of the Company’s employees and directors. The 2019 Plan is successor to and continuation of
the 2014 Equity Incentive Plan, as amended, the ("2014 Plan"), and no additional awards may be issued from the 2014 Plan. Subject to adjustment for
certain  changes  in  the  Company’s  capitalization,  the  aggregate  number  of  shares  of  common  stock  that  may  be  issued  under  the  2019  Plan  (the  "Share
Reserve") will not exceed the sum of (i) 250,000 new shares, plus (ii) an additional 600,000 shares that were approved at the Company’s Special Meeting
of Stockholders in January 2020, and plus (iii) an additional 500,000 shares that were approved at the Company's Annual meeting of Stockholders in June
2020, and plus (iv) the Prior Plans’ Returning Shares, as defined in the 2019 Plan documents, in an amount not to exceed 600,540 shares, including any
stock award granted under the 2014 Plan, 2011 Stock Option Plan, as amended, or 2006 Stock Option Plan, as amended, that were outstanding as of the
date the 2019 Plan was approved by the Company's stockholders, as such shares become available from time to time.

The  following  shares  of  common  stock,  or  the  2019  Plan  Returning  Shares,  will  also  become  available  again  for  issuance  under  the  2019  Plan:  (i)  any
shares subject to a stock award granted under the 2019 Plan that are not issued because such stock award expires or otherwise terminates without all of the
shares covered by such stock award having been issued; (ii) any shares subject to a stock award granted under the 2019 Plan that are not issued because
such  stock  award  is  settled  in  cash;  and  (iii)  any  shares  issued  pursuant  to  a  stock  award  granted  under  the  2019  Plan  that  are  forfeited  back  to  or
repurchased by the Company because of a failure to vest.

The 2019 Plan provides for the grant of incentive stock options, non-statutory stock options, stock appreciation rights, restricted stock awards, restricted
stock unit awards, performance stock awards, and other stock awards.

At December 31, 2020 and 2019, outstanding awards were comprised of the following:

Options
Inducement option awards
Restricted stock units
Inducement restricted stock units outstanding

Total outstanding awards

December 31, 2020

December 31, 2019

1,425,207 
85,761 
129,361 
500 
1,640,829 

471,282 
96,560 
5,609 
750 
574,201 

87

Grant Date Fair Value

The  valuation  of  the  share-based  compensation  awards  is  a  significant  accounting  estimate  that  requires  the  use  of  judgments  and  assumptions  that  are
likely to have a material impact on the financial statements. The fair value of option grants is determined using the Black-Scholes option-pricing model.
Expected  volatilities  utilized  in  the  model  are  based  on  historical  volatility  of  the  Company’s  common  stock.  Similarly,  the  dividend  yield  is  based  on
historical experience and the estimate of future dividend yields. The risk-free interest rate is derived from the U.S. Treasury yield curve in effect at the time
of grant. The expected term of the options is based on the average period the stock options are expected to remain outstanding. As the Company does not
have sufficient historical information to develop reasonable expectations about future exercise patterns and post-vesting employment termination behavior,
the  expected  term  is  calculated  as  the  midpoint  between  the  weighted-average  vesting  term  and  the  contractual  expiration  period  also  known  as  the
simplified method.

The fair value of the option grants has been estimated, with the following weighted-average assumptions:

Options granted
Weighted-average exercise price
Weighted-average grant date fair value
Assumptions:
Risk-free interest rate
Volatility
Expected life (years)
Expected dividend yield

Share-Based Compensation Activity

Year Ended

December 31, 2020

December 31, 2019

1,352,595 
7.59 
5.29 

0.82 %
85 %
5.83
— %

276,830 
26.12 
16.99 

2.23 %
72 %
6.04
— %

The following table summarizes the stock option activity for all stock plans during the year ended December 31, 2020 and 2019 as follows:

Options
Balance at December 31, 2018
Granted
Exercised
Forfeited
Balance at December 31, 2019
Granted
Exercised
Forfeited

Balance at December 31, 2020

Exercisable at December 31, 2020

Outstanding Stock
Options

Weighted Average
Exercise Price

Weighted Average
Remaining Contractual
Term (in years)

Aggregate Intrinsic
Value
(in thousands)

575,924  $
276,830  $
(220) $
(284,692) $
567,842  $
1,352,595  $

— 

(409,469) $
1,510,968  $
339,972  $

109.01 
26.12 
25.50 
93.81 
76.25 
7.59 

29.86 
27.36 

91.97 

8.09 $

7.82 $

8.19 $

5.61 $

87 

12 

379 

— 

For the years ended December 31, 2020 and 2019, the Company received cash of less than $0.1 million and $0.1 million, respectively, upon option
exercises.

88

The following table summarizes the options outstanding and exercisable at December 31, 2020:

Options Outstanding

Exercise Price
$2.97 to $5.05
$5.06 to $12.90
$12.91 to $15.85
$15.86 to $81.25
$81.26 to $234.70

Total

Total Shares

676,000 
125,301 
307,904 
217,682 
184,081 
1,510,968 

Weighted Average
Remaining
Contractual Term
(in years)

Weighted Average
Exercise Price

Total Shares

Options Exercisable
Weighted Average
Remaining
Contractual Term
(in years)

Weighted Average
Exercise Price

9.95 $
9.40 $
6.75 $
6.61 $
5.19 $

8.19 $

2.97 
8.41 
13.60 
42.24 
135.21 

27.36 

— 
1,549 
— 
163,911 
174,512 
339,972 

0.00 $
8.83 $
0.00 $
6.12 $
5.01 $

5.61 $

— 
9.62 
— 
44.40 
137.38 

91.97 

The following table summarizes the stock award activity for all restricted stock units during the year ended December 31, 2020:

Awards
Balance at December 31, 2018
Granted
Vested
Forfeited
Balance at December 31, 2019
Granted
Vested
Forfeited

Balance at December 31, 2020

2014 Employee Stock Purchase Plan

Outstanding
Restricted Stock
Awards and Units

Weighted-Average
Grant Date Fair
Value Per Share

Outstanding
Aggregate Intrinsic
Value (in
thousands)

Total Fair Value of
Restricted Awards
Vested (in
thousands)

24,615  $
3,000  $
(14,478) $
(6,778) $
6,359  $
239,023  $
(2,309) $
(113,212) $
129,861  $

80.23  $
33.30 
64.16  $
82.44 
92.29  $
4.70 
96.14  $
6.73 

5.59  $

719 

240  $

929 

82 

30  $

458 

222 

The 2014 Employee Stock Purchase Plan, the "ESPP", provides for eligible Company employees, as defined by the ESPP, to be given an opportunity to
purchase the Company's common stock at a discount, through payroll deductions, with stock purchases being made upon defined purchase dates. The ESPP
authorizes  the  issuance  of  up  to  55,000  shares  of  the  Company’s  common  stock  to  participating  employees  and  allows  eligible  employees  to  purchase
shares of common stock at a 15% discount from the lesser of the grant date or purchase date fair market value.

A summary of activity within the ESPP follows:

(in thousands except share data)
Deductions from employees
Share-based compensation expense recognized
Remaining share-based compensation expense
Proceeds received by the Company for ESPP
Weighted-average purchase price per common share
Number of shares purchased by employees under ESPP

Year Ended

December 31, 2020

December 31, 2019

$
$
$
$
$

56  $
96  $
—  $
78  $
5.21  $

14,975 

70 
95 
206 
98 
12.25 
8,000 

As of December 31, 2020, there were 18,488 shares available for issuance under the ESPP.

89

Share-Based Compensation Expense

Share-based compensation expense by classification for December 31, 2020 and 2019 are as follows:

(in thousands)
General and administrative
Research and development

     Total

Year Ended

December 31, 2020

December 31, 2019

$

$

3,170  $
1,861 
5,031  $

4,017 
3,321 
7,338 

At December 31, 2020, total compensation cost not yet recognized was $5.3 million and the weighted-average period over which this amount is expected to
be recognized is 2.03 years. The aggregate fair value of options and restricted shares vesting in the years ended December 31, 2020 and 2019 was $4.8
million and $8.9 million, respectively.

NOTE 8 - COMMITMENTS AND CONTINGENCIES

Co-Development and Co-Commercialization Agreement - Adaptimmune Therapeutics plc

On  December  16,  2016,  the  Company  entered  into  a  Co-Development  and  Co-Commercialization  Agreement  with  and  Adaptimmune  Therapeutics  plc
(Adaptimmune) in order to facilitate a staged collaboration to evaluate, develop and commercialize next generation T cell therapies. Under the Agreement,
the parties agreed to evaluate the Company’s GoTCR technology (inducible MyD88/CD40 co-stimulation, or iMC) with Adaptimmune’s affinity-optimized
SPEAR® T cells for the potential to create enhanced TCR product candidates. Depending on results of the preclinical proof-of-concept phase, the parties
expect to progress to a two-target co-development and co-commercialization phase. To the extent necessary, and in furtherance of the parties’ proof-of-
concept  and  co-development  efforts,  the  parties  granted  each  other  a  royalty-free,  non-transferable,  non-exclusive  license  covering  their  respective
technologies  for  purposes  of  facilitating  such  proof-of-concept  and  co-development  efforts.  In  addition,  as  to  covered  therapies  developed  under  the
agreement,  the  parties  granted  each  other  a  reciprocal  exclusive  license  for  the  commercialization  of  such  therapies.  With  respect  to  any  joint
commercialization  of  a  covered  therapy,  the  parties  agreed  to  negotiate  in  good  faith  the  commercially  reasonable  terms  of  a  co-commercialization
agreement.  The  parties  also  agreed  that  any  such  agreement  shall  provide  for,  among  other  things,  equal  sharing  of  the  costs  of  any  such  joint
commercialization and the calculation of profit shares as set forth in the Agreement. The Agreement will expire on a country-by-country basis once the
parties  cease  commercialization  of  the  T  cell  therapies  covered  by  the  Agreement,  unless  earlier  terminated  by  either  party  for  material  breach,  non-
performance or cessation of development, bankruptcy/insolvency, or failure to progress to co-development phase.

License Agreement - Baylor

In March 2016, the Company and Baylor College of Medicine (“BCM”) entered into two additional license agreements pursuant to which the Company
obtained exclusive rights to technologies and patent rights owned by BCM. The Company paid BCM a nonrefundable license fee of $100,000 and could
incur additional payments upon the achievement of certain milestone events as set forth in the agreement. If the Company is successful in developing any
of the licensed technologies, resulting sales would be subject to a royalty payment in the low single digits.

License Agreement - Agensys, Inc.

On  December  10,  2015,  the  Company  and  Agensys,  Inc.  (“Agensys”),  entered  into  a  license  agreement  (the  “Agensys  Agreement”),  pursuant  to  which
(i) Agensys granted the Company, within the field of cell and gene therapy of diseases in humans, an exclusive, worldwide license and sublicense to its
patent rights directed to prostate stem cell antigen 1 (“PSCA”) and related antibodies, and (ii) the Company granted Agensys a non-exclusive, fully paid
license to the Company’s patents directed to inventions that were made by the Company in the course of developing the Company’s licensed products,
solely for use with Agensys therapeutic products containing a soluble antibody that binds to PSCA or, to the extent not based upon the Company’s other
proprietary  technology,  to  non-therapeutic  applications  of  antibodies  not  used  within  the  field.  As  consideration  for  the  rights  granted  to  the  Company
under the Agreement, the Company agreed to pay to Agensys a non-refundable upfront fee of $3.0 million, which was included in license fee expense. The
Company is also required to make aggregate milestone payments to Agensys of up to (i) $5 million upon the first achievement of certain specified clinical
milestones for its licensed products, (ii) $50 million upon the achievement of certain specified clinical milestones for each licensed product, and (iii) $75
million upon the achievement of certain sales milestones for each licensed product. The Agreement additionally provides that the Company will pay to
Agensys a royalty that ranges from the mid to

90

high single digits based on the level of annual net sales of licensed products by the Company, its affiliates or permitted sublicensees. The royalty payments
are subject to reduction under specified circumstances. These milestone and royalty payments will be expensed as incurred. Under the Agreement, Agensys
also  was  granted  the  option  to  obtain  an  exclusive  license,  on  a  product-by-product  basis,  from  the  Company  to  commercialize  in  Japan  each  licensed
product developed under the Agensys Agreement that has completed a phase 2 clinical trial. As to each such licensed product, if Agensys or its affiliate,
Astellas  Pharma,  Inc.,  exercises  the  option,  the  Agensys  Agreement  provides  that  the  Company  will  be  paid  an  option  exercise  fee  of  $5  million.  In
addition, the Agensys Agreement provides that the Company will be paid a royalty that ranges from the mid to high single digits based on the level of
annual net sales in Japan of each such licensed product. If the option is exercised, the aggregate milestone payments payable by the Company to Agensys,
described above with respect to each licensed product, would be reduced by up to an aggregate of $65 million upon the achievement of certain specified
clinical and sales milestones. The Agensys Agreement will terminate upon the expiration of the last royalty term for the products covered by the Agensys
Agreement, which is the earlier of (i) the date of expiration or abandonment of the last valid claim within the licensed patent rights covering any licensed
products under the Agreement, (ii) the expiration of regulatory exclusivity as to a licensed product, and (iii) 10 years after the first commercial sale of a
licensed  product.  Either  party  may  terminate  the  Agensys  Agreement  upon  a  material  breach  by  the  other  party  that  remains  uncured  following  60
days after the date of written notice of such breach (or 30 days if such material breach is related to failure to make payment of amounts due under the
Agensys Agreement) or upon certain insolvency events. In addition, Agensys may terminate the Agensys Agreement immediately upon written notice to
the  Company  if  the  Company  or  any  of  its  affiliates  or  permitted  sublicensees  commences  an  interference  proceeding  or  challenges  the  validity  or
enforceability of any of Agensys’ patent rights.

License Agreement - BioVec

On  June  10,  2015,  the  Company  and  BioVec  Pharma,  Inc.  (“BioVec”)  entered  into  a  license  agreement  (the  “BioVec  Agreement”)  pursuant  to  which
BioVec agreed to supply the Company with certain proprietary cell lines and granted to the Company a non-exclusive, worldwide license to certain of its
patent rights and related know-how related to such proprietary cell lines. As consideration for the products supplied and rights granted to the Company
under the BioVec Agreement, the Company agreed to pay to BioVec an upfront fee of $100,000 within ten business days of the effective date of the BioVec
Agreement  and  a  fee  of  $300,000  within  ten  business  days  of  its  receipt  of  the  first  release  of  GMP  lot  of  the  products  licensed  under  the  BioVec
Agreement.  In  addition,  the  Company  agreed  to  pay  to  BioVec  an  annual  fee  of  $150,000,  commencing  30  days  following  the  first  filing  of  an
Investigational New Drug Application (an IND filing), or its foreign equivalent, for a product covered by the license; with such annual fees being creditable
against  any  royalties  payable  by  the  Company  to  BioVec  under  the  BioVec  Agreement.  The  Company  also  is  required  to  make  a  $250,000  milestone
payment to BioVec for each of the first three licensed products to enter into a clinical phase trial and one-time milestone payments of $2.0 million upon
receipt of a registration granted by the Federal Drug Administration or European Medicines Agency on each of the Company’s first three licensed products.
The BioVec Agreement additionally provides that the Company will pay to BioVec a royalty in the low single digits on net sales of products covered by the
BioVec Agreement. The Company may also grant sublicensees under the licensed patent rights and know-how to third parties for limited purposes related
to the use, sale and other exploitation of the products licensed under the BioVec Agreement. The BioVec Agreement will continue until terminated. The
BioVec Agreement may be terminated by the Company, in its sole discretion, at any time upon 90 days written notice to BioVec. Either party may terminate
the BioVec Agreement in the event of a breach by the other party of any material provision of the BioVec Agreement that remains uncured on the date that
is 60 days after written notice of such failure or upon certain insolvency events that remain uncured following the date that is 30 days after the date of
written notice to a party regarding such insolvency event.

Litigation

Securities Litigation

On August 11, 2020, the following derivative complaints were voluntarily dismissed by the plaintiffs following the May 2020 dismissal of the securities
class action complaint captioned Nipun Kakkar v. Bellicum Pharmaceuticals, Inc., Rick Fair and Alan Musso, and are no longer pending: (i) a purported
shareholder derivative complaint captioned Seung Paik v. Richard A. Fair, et al. against the Company’s directors and certain of the Company’s officers filed
on July 19, 2018 in the U.S. District Court for the Southern District of Texas, Houston Division; and (ii) another purported shareholder derivative
complaint captioned Scott Ludovissy and Ann Gordon Trammell v. Richard A. Fair, et al. filed July 8, 2019 against the same defendants in the same court.
On September 18, 2020, an additional purported derivative complaint captioned Mildred Taylor and Jessica Armor v. Richard A. Fair, et al. filed November
1, 2019 in the District of Delaware was voluntarily dismissed by the plaintiffs.

91

Other Litigation

On May 29, 2019, Bellicum was served with a second amended complaint indicating that the Company had been added as an additional defendant in an
ongoing civil tort lawsuit, captioned Kelly v. Children’s Hospital of Los Angeles et al., filed in the Los Angeles County Superior Court, Case No.
BC681477. On July 10, 2019 plaintiffs filed a third amended complaint seeking unspecified monetary damages including punitive damages and alleging
claims for wrongful death, negligence, breach of fiduciary duty, fraud, medical battery on decedent, medical battery on individual plaintiffs, products
liability - failure to warn, breach of express warranty and products liability design or manufacturing defect. Bellicum filed a demurrer and motion to strike
plaintiffs’ third amended complaint, which were granted in part on August 5, 2020 with the Court dismissing (without prejudice) all claims against
Bellicum with the exception of the breach of express warranty and products liability design or manufacturing defect causes of action. The Court also
granted Bellicum’s motion to strike plaintiffs’ claim for punitive damages. On September 15, 2020, plaintiffs filed a fourth amended complaint alleging the
same causes of action and damages against Bellicum as were pled in the third amended complaint. On November 3, 2020 Bellicum filed a demurrer and
motion to strike the fourth amended complaint, which is set for hearing on April 30, 2021. A trial date has not been set in the case.

NOTE 9 - INCOME TAXES

The reconciliation between federal income taxes at the statutory U.S. federal income tax rate and the Company’s income tax expense for the year is as
follows:  

(in thousands)
Tax benefit at statutory rate
Other
Stock based compensation
Offering issuance costs and changes in fair value of warrants and private placement option
Deferred tax valuation allowances
Research and development credit

Income tax expense

$

$

December 31, 2020

December 31, 2019

(1,658) $
200 
642 
(9,687)
11,690 
(1,187)

—  $

(23,591)
(294)
2,674 
4,657 
19,542 
(2,988)
— 

Deferred  income  taxes  reflect  the  net  tax  effect  of  temporary  differences  between  the  carrying  amounts  of  assets  and  liabilities  for  financial  reporting
purposes, and the amounts used for income tax purposes. Significant components of the Company’s deferred taxes as of December 31, 2020 and 2019 are
as follows:

(in thousands)
Deferred tax assets (liabilities):
      Net operating loss carryforward
      Stock compensation
      Intangible assets
      Research and development credit
      Operating lease assets
      Operating lease liabilities
      Other
Total deferred tax assets, net of deferred tax liabilities
      Valuation allowance

Net deferred tax

December 31, 2020

December 31, 2019

$

$

94,132  $
3,539 
7,682 
17,787 
(213)
354 
976 
124,257 
(124,257)

—  $

81,960 
3,270 
8,077 
16,601 
(1,229)
1,538 
2,336 
112,553 
(112,553)
— 

Net operating loss carryforwards and research tax credits as of December 31, 2020 and 2019 are as follows:

92

(in thousands)
U.S. federal income tax net operating loss carryforwards
U.K. net operating loss carryforwards
U.S. federal research tax credits
Texas research tax credits

December 31, 2020

December 31, 2019

$
$
$
$

448,250  $
133  $
12,535  $
5,252  $

390,286 
— 
11,348 
5,252 

The Company has $227.0 million of U.S. federal net operating loss carryovers that have no expiration date and the remaining begin to expire in 2025. The
U.S. Federal and state research credits will begin to expire in 2028 and 2034 respectively. No study has been performed on the research and development
(R&D) credits and gross R&D credits in the amount of $17.8 million could be limited based on review by the Internal Revenue Service.

The Internal Revenue Code Section 382 limits NOL and tax credit carry forwards when an ownership change of more than 50% of the value of the stock in
a loss corporation occurs. Accordingly, the ability to utilize remaining NOL and tax credit carryforwards may be significantly restricted.

In assessing the realization of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax asset
will be realized. The ultimate realization of deferred tax assets is dependent upon the Company attaining future taxable income during periods in which
those temporary differences become deductible.

Due to the uncertainty surrounding the realization of the benefits of its deferred assets, including NOL carryforwards, the Company has provided a 100%
valuation allowance on its net deferred tax assets at December 31, 2020 and 2019. The changes in the valuation allowance was an increase of $11.7 million
and an increase of $19.5 million for the years ended December 31, 2020 and 2019, respectively.

93

NOTE 10 - SUBSEQUENT EVENTS

Houston R&D Facility

On February 2, 2021 the Company executed a term sheet to exit the lease of the R&D facility on Reed Road in Houston, Texas. Under the terms of the
agreement a third party will assume the lease for the facility. In addition, the third party will provide $1.1 million of consideration to the Company for
substantially all of the property, plant and equipment associated with the location. The consideration will include $0.9 million of cash and an unsecured
promissory note for $0.2 million.

On February 26, 2021 the Company completed the transaction as contemplated in the aforementioned term sheet. The Company fully reserved for the
transaction through the impairment recognized in 2020.

South San Francisco Facility

On March 15, 2021 the Company entered an agreement to terminate its sub-lease of the South San Francisco office space contingent upon consent of the
prime lessor. The decision to exit this lease reflects the ability of the Company to carry on administrative function of the Company remotely as proven
through necessity during the pandemic. Under the terms of the agreement, the company will pay a lease termination fee of $0.9 million. As of December
31, 2020, the lease termination fee has been fully accrued as lease expense. The Company does not anticipate additional material expenses associated with
exiting the lease.

Compliance with NASDAQ Listing Rules

On November 23, 2020, the Company received notice (the "Notice") from The Nasdaq Stock Market LLC ("Nasdaq) advising the Company that for the last
30 consecutive business days preceding the date of the Notice, the Company's Market Value of Listed Securities ("MVLS") had been below the minimum
of $35,000,000 required for continued listing on The Nasdaq Capital Market pursuant to Nasdaq Listing Rule 5550(b)(2) (the "MVLS Requirement"). On
February 16, 2021, the Company received notification from Nasdaq that the Company had regained compliance with the MVLS Requirement.

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

None.

ITEM 9A.  Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our  management,  with  the  participation  of  our  principal  executive  officer  and  principal  financial  officer,  evaluated  the  effectiveness  of  our  disclosure
controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, as of December 31, 2020. The term “disclosure controls and
procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to
ensure  that  information  required  to  be  disclosed  by  a  company  in  the  reports  that  it  files  or  submits  under  the  Exchange  Act  is  recorded,  processed,
summarized  and  reported  within  the  time  periods  specified  in  the  SEC  rules  and  forms.  Disclosure  controls  and  procedures  include,  without  limitation,
controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange
Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate, to
allow timely decisions regarding required disclosure.

Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving
their objectives and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Based on
the  evaluation  of  our  disclosure  controls  and  procedures  as  of  December  31,  2020,  our  Chief  Executive  Officer,  Chief  Financial  Officer  and  Corporate
Controller concluded that, as of such date, our disclosure controls and procedures were effective.

Management’s Annual Report on Internal Controls over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act
Rule  13a-15(f)  and  15d-15(f).  Our  internal  control  over  financial  reporting  is  designed  under  the  supervision  of  our  management  to  provide  reasonable
assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with United States
generally accepted accounting principles.

94

Table of Contents

The  Company’s  internal  control  over  financial  reporting  includes  those  policies  and  procedures  that:  (i)  pertain  to  the  maintenance  of  records  that,  in
reasonable  detail,  accurately  and  fairly  reflect  the  transactions  and  dispositions  of  the  assets  of  the  Company;  (ii)  provide  reasonable  assurance  that
transactions are recorded as necessary to permit preparation of financial statements in accordance with U.S. generally accepted accounting principles, and
that receipts and expenditures of the Company are being made only in accordance with authorizations of management and directors of the Company; and
(iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the Company’s assets that
could have a material effect on the Consolidated Financial Statements.

Management, including our Chief Executive Officer, has assessed the effectiveness of our internal control over financial reporting based on the framework
set forth by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) in Internal Control-Integrated Framework. Based
on those criteria and our evaluation, management has concluded that our internal control over financial reporting was effective as of December 31, 2020.

Inherent Limitations of Internal Controls

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of
effectiveness  to  future  periods  are  subject  to  the  risks  that  controls  may  become  inadequate  because  of  changes  in  conditions,  or  that  the  degree  of
compliance with the policies or procedures may deteriorate.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting during our latest fiscal quarter that have materially affected, or are reasonably likely
to materially affect, our internal control over financial reporting.

ITEM 9B.  Other Information

On March 29, 2021, our board of directors appointed Richard A. Fair as our principal financial officer and principal accounting officer.

Mr. Fair, age 52, has served as our President and Chief Executive Officer and a member of our Board since January 2017. From January 2014 to January
2017, Mr. Fair served as Senior Vice President, Therapeutic Head Oncology Global Product Strategy at Genentech, Inc., a biotechnology company that in
2009 was acquired and became a subsidiary of Roche Holding AG. His responsibilities included leadership of lifecycle strategy and global
commercialization of the organization’s late stage and commercial oncology and hematology portfolio. From April 2006 to January 2014, Mr. Fair held
other positions at Genentech, including Vice President, Global Product Strategy Hematology & Signaling, from November 2012 through December 2013,
and Vice President, Sales & Marketing, Oral Oncolytics, from May 2010 to November 2012. Prior to Genentech, Mr. Fair held positions at Johnson &
Johnson, a public pharmaceutical and medical device company. Since October 2018, Mr. Fair has served as a member of the board of directors of Clovis
Oncology, Inc., a public biotechnology company. Mr. Fair received his B.S. in computer science from the University of Michigan and his MBA, with a dual
concentration in finance and management, from Columbia University.

95

Table of Contents

PART III

ITEM 10.  Directors, Executive Officers and Corporate Governance

The  information  required  by  this  item  will  be  set  forth  in  the  sections  headed  “Election  of  Directors,”  “Information  about  our  Executive  Officers”  and
“Section  16(a)  Beneficial  Ownership  Reporting  Compliance”  in  our  definitive  proxy  statement  for  our  Annual  Meeting  of  Stockholders,  or  our  Proxy
Statement, to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2020, and is incorporated herein by reference.

ITEM 11.  Executive Compensation

The  information  required  by  this  item  will  be  set  forth  in  the  section  headed  “Executive  and  Director  Compensation”  in  our  Proxy  Statement  and  is
incorporated herein by reference.

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

The information required by this item will be set forth in the section headed “Equity Benefit Plans” and “Security Ownership of Certain Beneficial Owners
and Management” in our Proxy Statement and is incorporated herein by reference.

The information required by Item 201(d) of Regulation S-K will be set forth in the section headed “Executive and Director Compensation” in our Proxy
Statement and is incorporated herein by reference.

ITEM 13.  Certain Relationships and Related Party Transactions, and Director Independence

The  information  required  by  this  item  will  be  set  forth  in  the  sections  headed  “Certain  Relationships  and  Related  Party  Transactions”  and  “Election  of
Directors” in our Proxy Statement and is incorporated herein by reference.

ITEM 14.  Principal Accounting Fees and Services

The  information  required  by  this  item  will  be  set  forth  in  the  section  headed  “Principal  Accounting  Fees  and  Services”  in  our  Proxy  Statement  and  is
incorporated herein by reference.

96

Table of Contents

PART IV

ITEM 15. Exhibits, Financial Statements and Schedules

(a)(1) Financial Statements.

The response to this portion of Item 15 is set forth under Part II, Item 8 above.

(a)(2) Financial Statement Schedules.

We have omitted these schedules because they are not required, or are not applicable, or the required information is shown in the consolidated financial
statements or notes thereto.

(a)(3) Exhibits.

Exhibit 
Number

Description

3.1

3.2

3.3

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

10.1+

10.2+

10.3+

Amended and Restated Certificate of Incorporation, as amended by Certificate of Amendment of the Amended and Restated Certificate of
Incorporation of the Registrant and the Second Certificate of Amendment of the Amended and Restated Certificate of Incorporation of the
Registrant (incorporated by reference to Exhibit 3.1 to the Registrant's Quarterly Report Form 10-Q with the SEC on August 6, 2020).

Amended and Restated Bylaws of the Registrant (incorporated by reference to Exhibit 3.2 to the Registrant’s Current Report on Form 8-K,
filed with the SEC on August 5, Amended and Restated Bylaws of the Registrant (incorporated by reference to Exhibit 3.2 to the
Registrant’s Current Report on Form 8-K, filed with the SEC on August 5, 2019).).

Certificate of Designations, Preferences and Rights of Series 1 Redeemable Convertible Non-Voting Preferred Stock, Series 2 Redeemable
Convertible Non-Voting Preferred Stock and Series 3 Redeemable Convertible Non-Voting Preferred Stock of Bellicum Pharmaceuticals,
Inc. (incorporated by reference to Exhibit 3.1 to the Registrant's report on Form 8-K, filed with the SEC on August 19, 2019).

Form of Common Stock Certificate of the Registrant (incorporated by reference to Exhibit 4.1 to the Registrant’s Registration Statement on
Form S-1, as amended (File No. 333-200328), originally filed with the SEC on November 18, 2014).

Registration Rights Agreement by and among the Registrant and Baker Brothers Life Sciences, LP, and two of its affiliated funds, dated
January 15, 2016 (incorporated by reference to Exhibit 4.4 to Registrant’s Registration Statement on Form S-3 (File No. 333-209012), filed
with the SEC on January 15, 2016).

Form of Warrant issued in public offering (incorporated by reference to Exhibit 4.1 to the Registrant's Current Report on Form 8-K (File
No. 001-36783), filed with the SEC on August 19, 2019).

Form of Warrant issued in private offering (incorporated by reference to Exhibit 4.2 to the Registrant's Current Report on Form 8-K (File
No. 001-36783), filed with the SEC on August 19, 2019).

Description of Description of Securities (incorporated by reference to Exhibit 4.7 to the Registrant's Current Report on Form 10K (File No.
001-36783), filed with the SEC on March 12, 2020.

Securities Purchase Agreement, dated August 16, 2019, by and among the Company and the institutional investors named therein,
(incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K (File No. 001-36783), filed with the SEC on
August 19, 2019).

Form of pre-funded warrant (incorporated by reference to Exhibit 4.1 to the Registrant's Current Report on Form 8-K (File No. 001-36783).
filed with the SEC on November 2, 2020).

Form of warrant to purchase common stock (incorporated by reference to Exhibit 4.2 to the Registrant's Current Report on Form 8-K (File
No.001-36783), filed with the SEC on November 2, 2020).

Form of Indemnification Agreement by and between the Registrant and its directors and officers (incorporated by reference to Exhibit 10.1
to the Registrant's Registration Statement on Form S-1, as amended (File No. 333-200328), originally filed with the SEC on November 18,
2014).
Bellicum Pharmaceuticals, Inc. 2006 Stock Option Plan and Form of Nonqualified Stock Option Agreement (incorporated by reference to
Exhibit 10.2 to the Registrant’s Registration Statement on Form S-1, as amended (File No. 333-200328), originally filed with the SEC on
November 18, 2014).

Bellicum Pharmaceuticals, Inc. 2011 Stock Option Plan and Forms of Incentive Stock Option Grant Agreement and Nonqualified Stock
Option Agreement (incorporated by reference to Exhibit 10.3 to the Registrant’s Registration Statement on Form S-1, as amended (File No.
333-200328), originally filed with the SEC on November 18, 2014).

97

Table of Contents

Exhibit 
Number

10.4(A)+

Bellicum Pharmaceuticals, Inc. 2014 Equity Incentive Plan, as amended (incorporated by reference to Exhibit 10.2 to the Registrant’s
Quarterly Report on Form 10-Q filed with the SEC on May 5, 2019).

Description

10.4(B)+

Form of Stock Option Grant Notice and Option Agreement under the 2014 Equity Incentive Plan (incorporated by reference to Exhibit
10.4(B) to the Registrant’s Annual Report on Form 10-K filed with the SEC on March 13, 2018).

10.4(C)+

Form of Stock Option Grant Notice and Option Agreement under the 2014 Equity Incentive Plan (with accelerated vesting) (incorporated
by reference to Exhibit 10.4(C) to the Registrant’s Annual Report on Form 10-K filed with the SEC on March 13, 2018).

10.4(D)+

Form of Restricted Stock Award Notice and Restricted Stock Award Agreement under the 2014 Equity Incentive Plan (incorporated by
reference to Exhibit 10.4(D) to the Registrant’s Annual Report on Form 10-K filed with the SEC on March 13, 2018).

10.4(E)+

Form of Restricted Stock Unit Notice and Restricted Stock Unit Agreement under the 2014 Equity Incentive Plan (incorporated by
reference to Exhibit 10.4(E) to the Registrant’s Annual Report on Form 10-K filed with the SEC on March 13, 2018).

10.4(F)+

Form of Stock Option Grant Notice and Option Agreement under the 2014 Equity Incentive Plan (Inducement Award)(incorporated by
reference to Exhibit 10.4(F) to the Registrant’s Annual Report on Form 10-K filed with the SEC on March 13, 2018).

10.4(G)+

Form of Stock Option Grant Notice and Option Agreement under the 2014 Equity Incentive Plan (Non-Employee Director Form)
(incorporated by reference to Exhibit 10.4(G) to the Registrant’s Annual Report on Form 10-K filed with the SEC on March 13, 2018).

10.5(A)+

Bellicum Pharmaceuticals, Inc. Bellicum Pharmaceuticals, Inc. 2019 Equity Incentive Plan, as amended (incorporated by reference to
Exhibit 10.2 to the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on August 6, 2020).

10.5(B)+

Forms of stock option grant notice, stock option agreement and notice of exercise, and forms of restricted stock award notice and restricted
stock award agreement under the Bellicum Pharmaceuticals, Inc. 2019 Equity Incentive Plan.

10.6+

10.8+

10.9+

10.12+

10.15

10.16*

10.17*

10.18*

10.19*

Bellicum Bellicum Pharmaceuticals, Inc. Non-Employee Director Compensation Policy, Inc. Non-Employee Director Compensation Policy
(incorporated by reference to Exhibit 10.1 to the Registrant's Quarterly Report on Form 10-Q filed with SEC on August 6, 2020).

Incentive Award Program, as amended on February 19, 2018 (incorporated by reference to Exhibit 10.7 to the Registrant’s Annual Report
on Form 10-K filed with the SEC on March 13, 2018).

Letter Agreement by and between the Registrant and Richard A. Fair, dated January 25, 2017 (incorporated by reference to Exhibit 10.43 to
the Registrant’s Annual Report on Form 10-K filed with the SEC on March 13, 2017).

Employment Agreement by and between Registrant and Shane M. Ward, effective May 29, 2018 (incorporated by reference to Exhibit 10.3
to the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on August 7, 2018).

Notice of Expansion of Licensed Field to Obtain Additional Exclusive Rights (incorporated by reference to Exhibit 10.14 to the Registrant’s
Registration Statement on Form S-1, as amended (File No. 333-200328), originally filed with the SEC on November 18, 2014).

Amended and Restated License Agreement by and between the Registrant and ARIAD Pharmaceuticals, Inc., dated March 7, 2011
(incorporated by reference to Exhibit 10.1 to the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on November 5, 2020).

Omnibus Amendment Agreement by and between Registrant and ARIAD Pharmaceuticals, Inc., dated October 3, 2014 (incorporated by
reference to Exhibit 10.2 to the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on November 5, 2020).

Exclusive License Agreement by and between the Registrant and Baylor College of Medicine, dated March 20, 2008 (incorporated by
reference to Exhibit 10.3 to the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on November 5, 2020).

Exclusive License Agreement by and between the Registrant and Baylor College of Medicine, dated June 27, 2010 (incorporated by
reference to Exhibit 10.4 to the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on November 5, 2020).

98

Table of Contents

Exhibit 
Number

10.20*

10.21*

10.22*

10.23*

10.24*

10.26

10.27

10.28

10.29

10.30

10.31

10.32

10.33

10.36

10.37*

10.38*

10.39

Description

Cancer Research Grant Contract by and between the Registrant and the Cancer Prevention and Research Institute of Texas, dated July 27,
2011 (incorporated by reference to Exhibit 10.5 to the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on November 5,
2020).

Exclusive License Agreement by and between the Registrant and Baylor College of Medicine, effective November 1, 2014 (incorporated by
reference to Exhibit 10.6 to the Registrant’s Quarterly Report on Form 10-Q filed with SEC on November 5, 2020).

License Agreement by and between the Registrant and BioVec Pharma, Inc., dated as of June 4, 2015 (incorporated by reference to Exhibit
10.2 to the Registrant's Quarterly Report on Form 10-Q filed with the SEC on August 13, 2015).

Exclusive License Agreement by and between the Registrant and Agensys, Inc., effective as of December 10, 2015 (incorporated by
reference to Exhibit 10.33 to the Registrant’s Annual Report on Form 10-K filed with the SEC on March 14, 2016).

Co-Development and Co-Commercialisation Agreement by and between the Registrant and Adaptimmune Limited, effective as of
December 16, 2016 (incorporated by reference to Exhibit 10.41 to the Registrant’s Annual Report on Form 10-K filed with the SEC on
March 13, 2017).

First Amendment to Lease Agreement by and between Registrant and Sheridan Hills Developments L.P., dated September 13, 2013
(incorporated by reference to Exhibit 10.22 to the Registrant’s Registration Statement on Form S-1, as amended (File No. 333-200328),
originally filed with the SEC on November 18, 2014).

Second Amendment to Lease Agreement by and between Registrant and Sheridan Hills Developments L.P., dated June 20, 2014
(incorporated by reference to Exhibit 10.23 to the Registrant’s Registration Statement on Form S-1, as amended (File No. 333-200328),
originally filed with the SEC on November 18, 2014).

Third Amendment to Lease Agreement by and between Registrant and Sheridan Hills Developments L.P., dated July 21, 2014 (incorporated
by reference to Exhibit 10.24 to the Registrant’s Registration Statement on Form S-1, as amended (File No. 333-200328), originally filed
with the SEC on November 18, 2014).

Fourth Amendment to Lease Agreement by and between Registrant and Sheridan Hills Developments L.P., dated November 12, 2014
(incorporated by reference to Exhibit 10.25 to the Registrant’s Registration Statement on Form S-1, as amended (File No. 333-200328),
originally filed with the SEC on November 18, 2014).

Fifth Amendment to Lease Agreement by and between the Registrant and Sheridan Hills Developments L.P., effective as of September 24,
2015 (incorporated by reference to Exhibit 10.1 to the Registrant's Quarterly Report on Form 10-Q filed with the SEC on November 9,
2016).

Lease Agreement by and between the Registrant and Sheridan Hills Developments L.P., dated as of May 6, 2015 (incorporated by reference
to Exhibit 10.32 to the Registrant’s Annual Report on Form 10-K filed with the SEC on March 14, 2016).

First Amendment to Lease Agreement by and between the Registrant and Life Science Plaza Investment Group, LP, effective as of July 11,
2016 (incorporated by reference to Exhibit 10.3 to the Registrant's Quarterly Report on Form 10-Q filed with the SEC on August 8, 2016).

Second Amendment to Lease Agreement by and between the Registrant and Life Science Plaza Investment Group, LP, effective as of
September 26, 2016 (incorporated by reference to Exhibit 10.3 to the Registrant's Quarterly Report on Form 10-Q filed with the SEC on
November 9, 2016).

Open Market Sale Agreement
Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed with the SEC on October 5, 2018).

, dated October 5, 2018, by and between the Registrant and Jefferies LLC (incorporated by reference to

SM

Supply Agreement by and between Registrant and Miltenyi Biotech GmbH, dated March 27, 2019 (incorporated by reference to Exhibit
10.1 to the Registrant’s Quarterly Report on Form 10-Q, filed with the SEC on May 7, 2019).

Asset Purchase Agreement, dated January 17, 2020, by and between the Registrant and The University of Texas M.D. Anderson Asset
Purchase Agreement, dated January 17, 2020, by and between the Registrant and The University of Texas M.D. Anderson Cancer Center
Center (incorporated by reference to Exhibit 10.38 to the Registrant's Annual Report on Form 10-K filed with the SEC on March 12, 2020).

First Amendment to Asset Purchase Agreement, dated February 21, 2020, by and between the Registrant and The University of Texas M.D.
Anderson Cancer Center (incorporated by reference to Exhibit 10.39 to the Registrant's Annual Report on Form 10-K filed with the SEC on
March 12, 2020).

99

Table of Contents

Exhibit 
Number

21.1

23.1

24.1

31.1

32.1

Subsidiaries of the Registrant.

Consent of Independent Registered Public Accounting Firm.

Power of Attorney. Reference is made to the signature page hereto.

Description

Certification of the Principal Executive Officer and Principal Financial Officer pursuant to Rule 13a-14(a) or 15d-14(a) of the Securities
Exchange Act of 1934.

Certification of the Principal Executive Officer and Principal Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002.

101.INS** XBRL Instance

101.SCH** XBRL Taxonomy Extension Schema

101.CAL** XBRL Taxonomy Extension Calculation

101.DEF** XBRL Taxonomy Extension Definition

101.LAB** XBRL Taxonomy Extension Labels

101.PRE** XBRL Taxonomy Extension Presentation

+

*

#

Indicates management contract or compensatory plan.

Certain portions of this exhibit (indicated by “[***]”) have been omitted as the Registrant as determined (i) the omitted information is not material
and (ii) the omitted information would likely cause harm to the Registrant if publicly disclosed.

This certification is deemed not filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the
liability of that section, nor shall it be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, or the
Securities Exchange Act of 1934, as amended.

100

Table of Contents

ITEM 15. Form 10-K Summary

Not applicable.

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on

its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Date: March 30, 2021

Bellicum Pharmaceuticals, Inc.

By:

/s/ Richard A. Fair
Richard A. Fair
President and Chief Executive Officer

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Richard A. Fair as his
true and lawful attorney-in-fact, with the power of substitution, for him in any and all capacities, to sign any amendments to this report, and to file the
same, with exhibits thereto and other documents in connection therewith with the Securities and Exchange Commission, hereby ratifying and confirming
all  that  each  of  said  attorney-in-fact,  or  his  substitute  or  substitutes  may  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 in the capacities and on the dates
indicated:

Signature

/s/ Richard A. Fair
Richard A. Fair

/s/ James Brown
James Brown

/s/ James M. Daly
James M. Daly

/s/ Stephen R. Davis
Stephen R. Davis

/s/ Reid M. Huber, Ph.D.
Reid M. Huber, Ph.D.

/s/ Judith Klimovsky
Judith Klimovsky

/s/ Jon P. Stonehouse
Jon P. Stonehouse

Title

President, Chief Executive Officer and Director
(Principal Executive Officer)

Date

March 30, 2021

Chairman of the Board of Directors

March 30, 2021

Member of the Board of Directors

March 30, 2021

Member of the Board of Directors

March 30, 2021

Member of the Board of Directors

March 30, 2021

Member of the Board of Directors

March 30, 2021

Member of the Board of Directors

March 30, 2021

101

 
Exhibit 10.5(B)

STANDARD FORM

BELLICUM PHARMACEUTICALS, INC.

STOCK OPTION GRANT NOTICE

(2019 EQUITY INCENTIVE PLAN)

Bellicum  Pharmaceuticals,  Inc.  (the  “Company”),  pursuant  to  its  2019  Equity  Incentive  Plan (the “Plan”),  hereby  grants  to  Optionholder  an  option  to

purchase the number of shares of the Company’s Common Stock set forth below. This option is subject to all of the terms and conditions as set forth in this

notice, in the Option Agreement, the Plan and the Notice of Exercise, all of which are attached hereto and incorporated herein in their entirety. Capitalized

terms not explicitly defined herein but defined in the Plan or the Option Agreement will have the same definitions as in the Plan or the Option Agreement.

If there is any conflict between the terms in this notice and the Plan, the terms of the Plan will control.

Optionholder:
Date of Grant:
Vesting Commencement Date:
Number of Shares Subject to Option:
Exercise Price (Per Share):
Total Exercise Price:
Expiration Date:

Type of Grant:        o Incentive Stock Option     o Nonstatutory Stock Option

Exercise Schedule:    x Same as Vesting Schedule     o Early Exercise Permitted

Vesting Schedule:          [One-fourth (1/4 )  of  the  shares  vest  one  year  after  the  later  of  the  (i)  Vesting  Commencement  Date  and  (ii)  Date  of  Grant;  the

th

balance of the shares vest in a series of thirty-six (36) successive equal monthly installments measured from the first anniversary of

the Vesting Commencement Date, subject to Optionholder’s Continuous Service as of each such date]

Payment:     By one or a combination of the following items (described in the Option Agreement):

x     By cash, check, bank draft or money order payable to the Company

x    Pursuant to a Regulation T Program if the shares are publicly traded

x    By delivery of already-owned shares if the shares are publicly traded

x    If and only to the extent this option is a Nonstatutory Stock Option, and subject to the Company’s consent at the time of exercise,

by a “net exercise” arrangement

STANDARD FORM

Additional Terms/Acknowledgements: Optionholder acknowledges receipt of, and understands and agrees to, this Stock Option Grant Notice, the Option

Agreement  and  the  Plan.  Optionholder  acknowledges  and  agrees  that  this  Stock  Option  Grant  Notice  and  the  Option  Agreement  may  not  be  modified,

amended or revised except as provided in the Plan. Optionholder further acknowledges that as of the Date of Grant, this Stock Option Grant Notice, the

Option Agreement, and the Plan set forth the entire understanding between Optionholder and the Company regarding this option award and supersede all

prior  oral  and  written  agreements,  promises  and/or  representations  on  that  subject  with  the  exception  of  (i)  options  previously  granted  and  delivered  to

Optionholder,  (ii)  any  compensation  recovery  policy  that  is  adopted  by  the  Company  or  is  otherwise  required  by  applicable  law  and  (iii)  any  written

employment  or  severance  arrangement  that  would  provide  for  vesting  acceleration  of  this  option  upon  the  terms  and  conditions  set  forth  therein.  By

accepting this option, Optionholder consents to receive such documents by electronic delivery and to participate in the Plan through an on-line or electronic

system established and maintained by the Company or another third party designated by the Company.

BELLICUM PHARMACEUTICALS, INC.

OPTIONHOLDER:

By:_________________________________________
Signature

____________________________________________
Signature

Title:________________________________________

Date:________________________________________

Date:________________________________________

ATTACHMENTS: Option Agreement, 2019 Equity Incentive Plan and Notice of Exercise

ATTACHMENT I

BELLICUM PHARMACEUTICALS, INC.
2019 EQUITY INCENTIVE PLAN
OPTION AGREEMENT
(INCENTIVE STOCK OPTION OR NONSTATUTORY STOCK OPTION)

STANDARD FORM

Pursuant to your Stock Option Grant Notice (“Grant Notice”) and this Option Agreement, Bellicum Pharmaceuticals, Inc.(the “Company”) has

granted you an option under its 2019 Equity Incentive Plan (the “Plan”) to purchase the number of shares of the Company’s Common Stock indicated in

your Grant Notice at the exercise price indicated in your Grant Notice. The option is granted to you effective as of the date of grant set forth in the Grant

Notice  (the  “Date  of  Grant”).  If  there  is  any  conflict  between  the  terms  in  this  Option  Agreement  and  the  Plan,  the  terms  of  the  Plan  will  control.

Capitalized terms not explicitly defined in this Option Agreement or in the Grant Notice but defined in the Plan will have the same definitions as in the

Plan.

The details of your option, in addition to those set forth in the Grant Notice and the Plan, are as follows:

1.

VESTING. Subject to the provisions contained herein, your option will vest as provided in your Grant Notice. Vesting will cease upon

the termination of your Continuous Service.

2.    NUMBER OF SHARES AND EXERCISE PRICE. The number of shares of Common Stock subject to your option and your exercise price

per share in your Grant Notice will be adjusted for Capitalization Adjustments.

3.    EXERCISE RESTRICTION FOR NON-EXEMPT EMPLOYEES. If you are an Employee eligible for overtime compensation under the

Fair Labor Standards Act of 1938, as amended (that is, a “Non-Exempt Employee”), and except as otherwise provided in the Plan, you may not exercise

your option until you have completed at least six (6) months of Continuous Service measured from the Date of Grant, even if you have already been an

employee for more than six (6) months. Consistent with the provisions of the Worker Economic Opportunity Act, you may exercise your option as to any

vested portion prior to such six (6) month anniversary in the case of (i) your death or disability, (ii) a Corporate Transaction in which your option is not

assumed,  continued  or  substituted,  (iii)  a  Change  in  Control  or  (iv)  your  termination  of  Continuous  Service  on  your  “retirement”  (as  defined  in  the

Company’s benefit plans).

4.    EXERCISE PRIOR TO VESTING (“EARLY EXERCISE”). If permitted in your Grant Notice (i.e., the “Exercise Schedule” indicates

“Early Exercise Permitted”) and subject to the provisions of your option, you may elect at any time that is both (i) during the period of your Continuous

Service and (ii) during the term of your option, to exercise all or part of your option, including the unvested portion of your option; provided, however, that:

a.        a  partial  exercise  of  your  option  will  be  deemed  to  cover  first  vested  shares  of  Common  Stock  and  then  the  earliest  vesting

installment of unvested shares of Common Stock;

b.    any shares of Common Stock so purchased from installments that have not vested as of the date of exercise will be subject to the

purchase option in favor of the Company as described in the Company’s form of Early Exercise Stock Purchase Agreement;

STANDARD FORM

c.    you will enter into the Company’s form of Early Exercise Stock Purchase Agreement with a vesting schedule that will result in the

same vesting as if no early exercise had occurred; and

d.    if your option is an Incentive Stock Option, then, to the extent that the aggregate Fair Market Value (determined at the Date of Grant)

of the shares of Common Stock with respect to which your option plus all other Incentive Stock Options you hold are exercisable for the first time by you

during any calendar year (under all plans of the Company and its Affiliates) exceeds one hundred thousand dollars ($100,000), your option(s) or portions

thereof that exceed such limit (according to the order in which they were granted) will be treated as Nonstatutory Stock Options.

5.    METHOD OF PAYMENT. You must pay the full amount of the exercise price for the shares you wish to exercise. You may pay the exercise

price in cash or by check, bank draft or money order payable to the Company or in any other manner permitted by your Grant Notice, which may include

one or more of the following:

a.    Provided that at the time of exercise the Common Stock is publicly traded, pursuant to a program developed under Regulation T as

promulgated by the Federal Reserve Board that, prior to the issuance of Common Stock, results in either the receipt of cash (or check) by the Company or

the receipt of irrevocable instructions to pay the aggregate exercise price to the Company from the sales proceeds. This manner of payment is also known

as a “broker-assisted exercise”, “same day sale”, or “sell to cover”.

b.    Provided that at the time of exercise the Common Stock is publicly traded, by delivery to the Company (either by actual delivery or

attestation) of already-owned shares of Common Stock that are owned free and clear of any liens, claims, encumbrances or security interests, and that are

valued at Fair Market Value on the date of exercise. “Delivery” for these purposes, in the sole discretion of the Company at the time you exercise your

option, will include delivery to the Company of your attestation of ownership of such shares of Common Stock in a form approved by the Company. You

may not exercise your option by delivery to the Company of Common Stock if doing so would violate the provisions of any law, regulation or agreement

restricting the redemption of the Company’s stock.

c.    If this option is a Nonstatutory Stock Option, subject to the consent of the Company at the time of exercise, by a “net exercise”

arrangement pursuant to which the Company will reduce the number of shares of Common Stock issued upon exercise of your option by the largest whole

number  of  shares  with  a  Fair  Market  Value  that  does  not  exceed  the  aggregate  exercise  price.  You  must  pay  any  remaining  balance  of  the  aggregate

exercise price not satisfied by the “net exercise” in cash or other permitted form of payment. Shares of Common Stock will no longer be outstanding under

your option and will not be exercisable thereafter if those shares (i) are used to pay the exercise price pursuant to the “net exercise,” (ii) are delivered to you

as a result of such exercise, and (iii) are withheld to satisfy your tax withholding obligations.

6.    WHOLE SHARES. You may exercise your option only for whole shares of Common Stock.

7.    SECURITIES LAW COMPLIANCE. In no event may you exercise your option unless the shares of Common Stock issuable upon exercise

are then registered under the Securities Act or, if not registered, the Company has determined that your exercise and the issuance of the shares would be

exempt  from  the  registration  requirements  of  the  Securities  Act.  The  exercise  of  your  option  also  must  comply  with  all  other  applicable  laws  and

regulations governing your option, and you may not exercise

STANDARD FORM

your option if the Company determines that such exercise would not be in material compliance with such laws and regulations (including any restrictions

on exercise required for compliance with Treas. Reg. 1.401(k)-1(d)(3), if applicable).

8.    TERM. You  may  not  exercise  your  option  before  the  Date  of  Grant  or  after  the  expiration  of  the  option’s  term.  The  term  of  your  option

expires, subject to the provisions of Section 5(h) of the Plan, upon the earliest of the following:

a.    immediately upon the termination of your Continuous Service for Cause;

b.    three (3) months after the termination of your Continuous Service for any reason other than Cause, your Disability or your death

(except  as  otherwise  provided  in  Section  8(d)  below);  provided,  however,  that  if  during  any  part  of  such  three  (3)  month  period  your  option  is  not

exercisable solely because of the condition set forth in the section above relating to “Securities Law Compliance,” your option will not expire until the

earlier of the Expiration Date or until it has been exercisable for an aggregate period of three (3) months after the termination of your Continuous Service;

provided further, if during any part of such three (3) month period, the sale of any Common Stock received upon exercise of your option would violate the

Company’s insider trading policy, then your option will not expire until the earlier of the Expiration Date or until it has been exercisable for an aggregate

period of three (3) months after the termination of your Continuous Service during which the sale of the Common Stock received upon exercise of your

option would not be in violation of the Company’s insider trading policy. Notwithstanding the foregoing, if (i) you are a Non-Exempt Employee, (ii) your

Continuous  Service  terminates  within  six  (6)  months  after  the  Date  of  Grant,  and  (iii)  you  have  vested  in  a  portion  of  your  option  at  the  time  of  your

termination of Continuous Service, your option will not expire until the earlier of (x) the later of (A) the date that is seven (7) months after the Date of

Grant, and (B) the date that is three (3) months after the termination of your Continuous Service, and (y) the Expiration Date;

c.    twelve (12) months after the termination of your Continuous Service due to your Disability (except as otherwise provided in Section

8(d)) below;

d.        eighteen  (18)  months  after  your  death  if  you  die  either  during  your  Continuous  Service  or  within  three  (3)  months  after  your

Continuous Service terminates for any reason other than Cause;

e.    the Expiration Date indicated in your Grant Notice; or

f.    the day before the tenth (10th) anniversary of the Date of Grant.

If your option is an Incentive Stock Option, note that to obtain the federal income tax advantages associated with an Incentive Stock Option, the

Code requires that at all times beginning on the Date of Grant and ending on the day three (3) months before the date of your option’s exercise, you must be

an employee of the Company or an Affiliate, except in the event

of your death or Disability. The Company has provided for extended exercisability of your option under certain circumstances for your benefit but cannot

guarantee that your option will necessarily be treated as an Incentive Stock Option if you continue to provide services to the Company or an Affiliate as a

Consultant  or  Director  after  your  employment  terminates  or  if  you  otherwise  exercise  your  option  more  than  three  (3)  months  after  the  date  your

employment with the Company or an Affiliate terminates.

STANDARD FORM

9.    EXERCISE.

a.    You may exercise the vested portion of your option (and the unvested portion of your option if your Grant Notice so permits) during

its term by (i) delivering a Notice of Exercise (in a form designated by the Company) or completing such other documents and/or procedures designated by

the Company for exercise and (ii) paying the exercise price and any applicable withholding taxes to the Company’s Secretary, stock plan administrator, or

such other person as the Company may designate, together with such additional documents as the Company may then require.

b.    By exercising your option you agree that, as a condition to any exercise of your option, the Company may require you to enter into

an arrangement providing for the payment by you to the Company of any tax withholding obligation of the Company arising by reason of (i) the exercise of

your  option,  (ii)  the  lapse  of  any  substantial  risk  of  forfeiture  to  which  the  shares  of  Common  Stock  are  subject  at  the  time  of  exercise,  or  (iii)  the

disposition of shares of Common Stock acquired upon such exercise.

c.    If your option is an Incentive Stock Option, by exercising your option you agree that you will notify the Company in writing within

fifteen (15) days after the date of any disposition of any of the shares of the Common Stock issued upon exercise of your option that occurs within two (2)

years after the Date of Grant or within one (1) year after such shares of Common Stock are transferred upon exercise of your option.

d.        By  accepting  your  option  you  agree  that  you  will  not  sell,  dispose  of,  transfer,  make  any  short  sale  of,  grant  any  option  for  the

purchase of, or enter into any hedging or similar transaction with the same economic effect as a sale, any shares of Common Stock or other securities of the

Company held by you, for a period of one hundred eighty (180) days following the effective date of a registration statement of the Company filed under the

Securities Act or such longer period as the underwriters or the Company will request to facilitate compliance with FINRA Rule 2241 or NYSE Member

Rule 472 or any successor or similar rules or regulation (the “Lock-Up Period”); provided, however, that nothing contained in this section will prevent the

exercise of a repurchase option, if any, in favor of the Company during the Lock-Up Period. You further agree to execute and deliver such other agreements

as  may  be  reasonably  requested  by  the  Company  or  the  underwriters  that  are  consistent  with  the  foregoing  or  that  are  necessary  to  give  further  effect

thereto. In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions with respect to your shares of Common Stock until

the end of such period.

You also agree that any transferee of any shares of Common Stock (or other securities) of the Company held by you will be bound by this Section 9(d). The

underwriters of the Company’s stock are intended third party beneficiaries of this Section 9(d) and will have the right, power and authority to enforce the

provisions hereof as though they were a party hereto.

10.    TRANSFERABILITY. Except as otherwise provided in this Section 10, your option is not transferable, except by will or by the laws of

descent and distribution, and is exercisable during your life only by you.

a.    Certain Trusts. Upon receiving written permission from the Board or its duly authorized designee, you may transfer your option to a

trust if you are considered to be the sole beneficial owner (determined under Section 671 of the Code and applicable state law) while the option is held in

the trust. You and the trustee must enter into transfer and other agreements required by the Company.

STANDARD FORM

b.    Domestic Relations Orders. Upon receiving written permission from the Board or its duly authorized designee, and provided that

you and the designated transferee enter into transfer and other agreements required by the Company, you may transfer your option pursuant to the terms of

a domestic relations order, official marital settlement agreement or other divorce or separation instrument as permitted by Treasury Regulation 1.421-1(b)

(2) that contains the information required by the Company to effectuate the transfer. You are encouraged to discuss the proposed terms of any division of

this option with the Company prior to finalizing the domestic relations order or marital settlement agreement to help ensure the required information is

contained within the domestic relations order or marital settlement agreement. If this option is an Incentive Stock Option, this option may be deemed to be

a Nonstatutory Stock Option as a result of such transfer.

c.    Beneficiary Designation. Upon receiving written permission from the Board or its duly authorized designee, you may, by delivering

written notice to the Company, in a form approved by the Company and any broker designated by the Company to handle option exercises, designate a

third party who, on your death, will thereafter be entitled to exercise this option and receive the Common Stock or other consideration resulting from such

exercise. In the absence of such a designation, your executor or administrator of your estate will be entitled to exercise this option and receive, on behalf of

your estate, the Common Stock or other consideration resulting from such exercise.

11.        OPTION  NOT  A  SERVICE  CONTRACT. Your  option  is  not  an  employment  or  service  contract,  and  nothing  in  your  option  will  be

deemed to create in any way whatsoever any obligation on your part to continue in the employ of the Company or an Affiliate, or of the Company or an

Affiliate to continue your employment. In addition, nothing in your option will obligate the Company or an Affiliate, their respective stockholders, boards

of directors, officers or employees to continue any relationship that you might have as a Director or Consultant for the Company or an Affiliate.

12.    WITHHOLDING OBLIGATIONS.

a.       At  the  time  you  exercise  your  option,  in  whole  or  in  part,  and  at  any  time  thereafter  as  requested  by  the  Company,  you  hereby

authorize withholding from payroll and any other amounts payable to you, and otherwise agree to make adequate provision for (including by means of a

“same  day  sale”  pursuant  to  a  program  developed  under  Regulation  T  as  promulgated  by  the  Federal  Reserve  Board  to  the  extent  permitted  by  the

Company), any sums required to satisfy the federal, state, local and foreign tax withholding obligations of the Company or an Affiliate, if any, which arise

in connection with the exercise of your option.

b.    If this option is a Nonstatutory Stock Option, then upon your request and subject to approval by the Company, and compliance with

any applicable legal conditions or restrictions, the Company may withhold from fully vested shares of Common Stock otherwise issuable to you upon the

exercise of your option a number of whole shares of Common Stock having a Fair Market Value, determined by the Company as of the date of exercise, not

in excess of the maximum amount of tax required to be withheld by law (or such other amount as may be permitted while still avoiding classification of

your option as a liability for financial accounting purposes). If the date of determination of any tax withholding obligation is deferred to a date later than the

date of exercise of your option, share withholding pursuant to the preceding sentence shall not be permitted unless you make a proper and timely election

under Section 83(b) of the Code, covering the aggregate number of

shares of Common Stock acquired upon such exercise with respect to which such determination is otherwise deferred, to accelerate the determination

STANDARD FORM

of such tax withholding obligation to the date of exercise of your option. Notwithstanding the filing of such election, shares of Common Stock shall be

withheld solely from fully vested shares of Common Stock determined as of the date of exercise of your option that are otherwise issuable to you upon

such exercise. Any adverse consequences to you arising in connection with such share withholding procedure shall be your sole responsibility.

c.        You  may  not  exercise  your  option  unless  the  tax  withholding  obligations  of  the  Company  and/or  any  Affiliate  are  satisfied.

Accordingly, you may not be able to exercise your option when desired even though your option is vested, and the Company will have no obligation to

issue a certificate for such shares of Common Stock or release such shares of Common Stock from any escrow provided for herein, if applicable, unless

such obligations are satisfied.

13.        TAX  CONSEQUENCES.  You  hereby  agree  that  the  Company  does  not  have  a  duty  to  design  or  administer  the  Plan  or  its  other

compensation programs in a manner that minimizes your tax liabilities. You will not make any claim against the Company, or any of its Officers, Directors,

Employees or Affiliates related to tax liabilities arising from your option or your other compensation. In particular, you acknowledge that this option is

exempt from Section 409A of the Code only if the exercise price per share specified in the Grant Notice is at least equal to the “fair market value” per share

of the Common Stock on the Date of Grant and there is no other impermissible deferral of compensation associated with the option.

14.        NOTICES. Any  notices  provided  for  in  your  option  or  the  Plan  will  be  given  in  writing  (including  electronically)  and  will  be  deemed

effectively given upon receipt or, in the case of notices delivered by mail by the Company to you, five (5) days after deposit in the United States mail,

postage  prepaid,  addressed  to  you  at  the  last  address  you  provided  to  the  Company.  The  Company  may,  in  its  sole  discretion,  decide  to  deliver  any

documents related to participation in the Plan and this option by electronic means or to request your consent to participate in the Plan by electronic means.

By  accepting  this  option,  you  consent  to  receive  such  documents  by  electronic  delivery  and  to  participate  in  the  Plan  through  an  on-line  or  electronic

system established and maintained by the Company or another third party designated by the Company.

15.    GOVERNING PLAN DOCUMENT. Your option is subject to all the provisions of the Plan, the provisions of which are hereby made a

part  of  your  option,  and  is  further  subject  to  all  interpretations,  amendments,  rules  and  regulations,  which  may  from  time  to  time  be  promulgated  and

adopted pursuant to the Plan. If there is any conflict between the provisions of your option and those of the Plan, the provisions of the Plan will control. In

addition, your option (and any compensation paid or shares issued under your option) is subject to recoupment in accordance with The Dodd-Frank Wall

Street  Reform  and  Consumer  Protection  Act  and  any  implementing  regulations  thereunder,  any  compensation  recovery  policy  otherwise  required  by

applicable law and any recoupment or clawback policy adopted by the Company (whether or not required by applicable law).

16.    OTHER DOCUMENTS. You hereby acknowledge receipt of and the right to receive a document providing the information required by

Rule 428(b)(1) promulgated under the Securities Act, which includes the Plan prospectus. In addition, you acknowledge receipt of the Company’s policy

permitting certain individuals to sell shares only during certain “window” periods and the Company’s insider trading policy, in effect from time to time.

17.    EFFECT ON OTHER EMPLOYEE BENEFIT PLANS. The value of this option will not be included as compensation, earnings, salaries,

or other similar terms used when calculating your benefits under any employee benefit plan

STANDARD FORM

sponsored by the Company or any Affiliate, except as such plan otherwise expressly provides. The Company expressly reserves its rights to amend, modify,

or terminate any of the Company’s or any Affiliate’s employee benefit plans.

18.    VOTING RIGHTS. You will not have voting or any other rights as a stockholder of the Company with respect to the shares to be issued

pursuant to this option until such shares are issued to you. Upon such issuance, you will obtain full voting and other rights as a stockholder of the Company.

Nothing  contained  in  this  option,  and  no  action  taken  pursuant  to  its  provisions,  will  create  or  be  construed  to  create  a  trust  of  any  kind  or  a  fiduciary

relationship between you and the Company or any other person.

19.    SEVERABILITY. If all or any part of this Option Agreement or the Plan is declared by any court or governmental authority to be unlawful

or invalid, such unlawfulness or invalidity will not invalidate any portion of this Option Agreement or the Plan not declared to be unlawful or invalid. Any

Section of this Option Agreement (or part of such a Section) so declared to be unlawful or invalid shall, if possible, be construed in a manner which will

give effect to the terms of such Section or part of a Section to the fullest extent possible while remaining lawful and valid.

20.    MISCELLANEOUS.

a.    The rights and obligations of the Company under your option will be transferable to any one or more persons or entities, and all

covenants and agreements hereunder will inure to the benefit of, and be enforceable by the Company’s successors and assigns.

b.       You  agree  upon  request  to  execute  any  further  documents  or  instruments  necessary  or  desirable  in  the  sole  determination  of  the

Company to carry out the purposes or intent of your option.

c.       You  acknowledge  and  agree  that  you  have  reviewed  your  option  in  its  entirety,  have  had  an  opportunity  to  obtain  the  advice  of

counsel prior to executing and accepting your option, and fully understand all provisions of your option.

d.    This Option Agreement will be subject to all applicable laws, rules, and regulations, and to such approvals by any governmental

agencies or national securities exchanges as may be required.

e.    All obligations of the Company under the Plan and this Option Agreement will be binding on any successor to the Company, whether

the existence of such successor is the result of a direct or indirect purchase, merger, consolidation, or otherwise, of all or substantially all of the business

and/or assets of the Company.

This Option Agreement will be deemed to be signed by you upon the signing by you of the Stock Option Grant Notice to which it is attached.

                        *    *    *

STANDARD FORM

ATTACHMENT II

2019 EQUITY INCENTIVE PLAN

STANDARD FORM

ATTACHMENT III

NOTICE OF EXERCISE

Bellicum Pharmaceuticals, Inc.

Life Sciences Plaza

2130 West Holcombe Boulevard, Suite 850

Houston, Texas 77030                        Date of Exercise: _______________

This constitutes notice to Bellicum Pharmaceuticals, Inc. (the “Company”) under my stock option that I elect to purchase the below number of

shares of Common Stock of the Company (the “Shares”) for the price set forth below.

Type of option (check one):
Stock option dated:
Number of Shares as
to which option is 
exercised:
Certificates to be
issued in name of:
Total exercise price:
Cash payment delivered
herewith:
[Value of ________ Shares delivered herewith:

[Value of ________ Shares pursuant to net
exercise:
[Regulation T Program (cashless exercise):

Incentive o
_______________

Nonstatutory o
_______________

_______________

_______________

_______________
$______________

$______________
$______________

$______________
$______________

_______________
$______________

$______________
$______________]

$______________]
$______________]

1
 Shares must meet the public trading requirements set forth in the option. Shares must be valued in accordance with the terms of the option being
exercised, and must be owned free and clear of any liens, claims, encumbrances or security interests. Certificates must be endorsed or accompanied by an
executed assignment separate from certificate.
2 
The option must be a Nonstatutory Stock Option, and Bellicum Pharmaceuticals, Inc. must have established net exercise procedures at the time of
exercise, in order to utilize this payment method.
3
 Shares must meet the public trading requirements set forth in the option.

By this exercise, I agree (i) to provide such additional documents as you may require pursuant to the terms of the Bellicum Pharmaceuticals, Inc.

2019 Equity Incentive Plan, (ii) to provide for the payment by me to you (in the manner designated by you) of your withholding obligation, if any, relating

to the exercise of this option, and (iii) if this exercise relates to an incentive stock option, to notify you in writing within fifteen (15) days after the date of

any disposition of any of the Shares issued upon exercise of this option that occurs within two (2) years after the date of grant of this option or within one

(1) year after such Shares are issued upon exercise of this option.

STANDARD FORM

Very truly yours,

_________________________________________________

NON-EMPLOYEE DIRECTOR FORM

BELLICUM PHARMACEUTICALS, INC.

STOCK OPTION GRANT NOTICE

(2019 EQUITY INCENTIVE PLAN)

Bellicum  Pharmaceuticals,  Inc.  (the  “Company”),  pursuant  to  its  2019  Equity  Incentive  Plan (the “Plan”),  hereby  grants  to  Optionholder  an  option  to

purchase the number of shares of the Company’s Common Stock set forth below. This option is subject to all of the terms and conditions as set forth in this

notice, in the Option Agreement, the Plan and the Notice of Exercise, all of which are attached hereto and incorporated herein in their entirety. Capitalized

terms not explicitly defined herein but defined in the Plan or the Option Agreement will have the same definitions as in the Plan or the Option Agreement.

If there is any conflict between the terms in this notice and the Plan, the terms of the Plan will control.

Optionholder:
Date of Grant:
Number of Shares Subject to Option:
Exercise Price (Per Share):
Total Exercise Price:
Expiration Date:

Type of Grant:        x Nonstatutory Stock Option

Exercise Schedule:    x Same as Vesting Schedule     

Vesting Schedule:     [For initial grants: The shares shall vest with respect to one-third of the shares on the one-year anniversary of the Date of Grant, and

with respect to the remaining two-thirds of the shares in a series of twenty-four (24) successive equal monthly installments over

the two-year period following such one-year anniversary of the Date of Grant, subject to Optionholder’s Continuous Service as

of each such date and the potential acceleration provisions set forth in Section 9 of the Option Agreement] [For annual grants:

The shares shall vest in full on the one-year anniversary of the Date of Grant, subject to Optionholder’s Continuous Service as of

each such date and the potential acceleration provisions set forth in Section 9 of the Option Agreement]

Payment:     By one or a combination of the following items (described in the Option Agreement):

x    By cash, check, bank draft or money order payable to the Company

x    Pursuant to a Regulation T Program if the shares are publicly traded

x    By delivery of already-owned shares if the shares are publicly traded

x    Subject to the Company’s consent at the time of exercise, by a “net exercise” arrangement

NON-EMPLOYEE DIRECTOR FORM

Additional Terms/Acknowledgements: Optionholder acknowledges receipt of, and understands and agrees to, this Stock Option Grant Notice, the Option

Agreement  and  the  Plan.  Optionholder  acknowledges  and  agrees  that  this  Stock  Option  Grant  Notice  and  the  Option  Agreement  may  not  be  modified,

amended or revised except as provided in the Plan. Optionholder further acknowledges that as of the Date of Grant, this Stock Option Grant Notice, the

Option Agreement, and the Plan set forth the entire understanding between Optionholder and the Company regarding this option award and supersede all

prior  oral  and  written  agreements,  promises  and/or  representations  on  that  subject  with  the  exception  of  (i)  options  previously  granted  and  delivered  to

Optionholder,  (ii)  any  compensation  recovery  policy  that  is  adopted  by  the  Company  or  is  otherwise  required  by  applicable  law  and  (iii)  any  written

employment  or  severance  arrangement  that  would  provide  for  vesting  acceleration  of  this  option  upon  the  terms  and  conditions  set  forth  therein.  By

accepting this option, Optionholder consents to receive such documents by electronic delivery and to participate in the Plan through an on-line or electronic

system established and maintained by the Company or another third party designated by the Company.

BELLICUM PHARMACEUTICALS, INC.

OPTIONHOLDER:

By:______________________________________
Signature

Title:_____________________________________

__________________________________________
Signature

Date:_____________________________________

Date:______________________________________

ATTACHMENTS: Option Agreement, 2019 Equity Incentive Plan and Notice of Exercise

NON-EMPLOYEE DIRECTOR FORM

ATTACHMENT I

BELLICUM PHARMACEUTICALS, INC.

2019 EQUITY INCENTIVE PLAN

OPTION AGREEMENT

(NONSTATUTORY STOCK OPTION)

Pursuant to your Stock Option Grant Notice (“Grant Notice”) and this Option Agreement, Bellicum Pharmaceuticals, Inc.(the “Company”) has

granted you an option under its 2019 Equity Incentive Plan (the “Plan”) to purchase the number of shares of the Company’s Common Stock indicated in

your Grant Notice at the exercise price indicated in your Grant Notice. The option is granted to you effective as of the date of grant set forth in the Grant

Notice  (the  “Date  of  Grant”).  If  there  is  any  conflict  between  the  terms  in  this  Option  Agreement  and  the  Plan,  the  terms  of  the  Plan  will  control.

Capitalized terms not explicitly defined in this Option Agreement or in the Grant Notice but defined in the Plan will have the same definitions as in the

Plan.

The details of your option, in addition to those set forth in the Grant Notice and the Plan, are as follows:

VESTING.  Subject  to  the  provisions  contained  herein,  your  option  will  vest  as  provided  in  your  Grant  Notice.  Vesting  will  cease  upon  the

termination of your Continuous Service.

NUMBER OF SHARES AND EXERCISE PRICE. The number of shares of Common Stock subject to your option and your exercise price per

share in your Grant Notice will be adjusted for Capitalization Adjustments.

METHOD OF PAYMENT. You must pay the full amount of the exercise price for the shares you wish to exercise. You may pay the exercise

price in cash or by check, bank draft or money order payable to the Company or in any other manner permitted by your Grant Notice, which may include

one or more of the following:

Provided  that  at  the  time  of  exercise  the  Common  Stock  is  publicly  traded,  pursuant  to  a  program  developed  under  Regulation  T  as

promulgated by the Federal Reserve Board that, prior to the issuance of Common Stock, results in either the receipt of cash (or check) by the Company or

the receipt of irrevocable instructions to pay the aggregate exercise price to the Company from the sales proceeds. This manner of payment is also known

as a “broker-assisted exercise”, “same day sale”, or “sell to cover”.

Provided  that  at  the  time  of  exercise  the  Common  Stock  is  publicly  traded,  by  delivery  to  the  Company  (either  by  actual  delivery  or

attestation) of already-owned shares of Common Stock that are owned free and clear of any liens, claims, encumbrances or security interests, and that are

valued at Fair Market Value on the date of exercise. “Delivery” for these purposes, in the sole discretion of the Company at the time you exercise your

option, will include delivery to the Company of your attestation of ownership of such shares of Common Stock in a form approved by the Company. You

may not exercise your option by delivery to the Company of Common Stock if doing so would violate the provisions of any law, regulation or agreement

restricting the redemption of the Company’s stock.

NON-EMPLOYEE DIRECTOR FORM

Subject  to  the  consent  of  the  Company  at  the  time  of  exercise,  by  a  “net  exercise”  arrangement  pursuant  to  which  the  Company  will

reduce the number of shares of Common Stock issued upon exercise of your option by the largest whole number of shares with a Fair Market Value that

does not exceed the aggregate exercise price. You must pay any remaining balance of the aggregate exercise price not satisfied by the “net exercise” in cash

or other permitted form of payment. Shares of Common Stock will no longer be outstanding under your option and will not be exercisable thereafter if

those shares (i) are used to pay the exercise price pursuant to the “net exercise,” (ii) are delivered to you as a result of such exercise, and (iii) are withheld

to satisfy your tax withholding obligations.

WHOLE SHARES. You may exercise your option only for whole shares of Common Stock.

SECURITIES LAW COMPLIANCE. In no event may you exercise your option unless the shares of Common Stock issuable upon exercise are

then  registered  under  the  Securities  Act  or,  if  not  registered,  the  Company  has  determined  that  your  exercise  and  the  issuance  of  the  shares  would  be

exempt  from  the  registration  requirements  of  the  Securities  Act.  The  exercise  of  your  option  also  must  comply  with  all  other  applicable  laws  and

regulations  governing  your  option,  and  you  may  not  exercise  your  option  if  the  Company  determines  that  such  exercise  would  not  be  in  material

compliance with such laws and regulations (including any restrictions on exercise required for compliance with Treas. Reg. 1.401(k)-1(d)(3), if applicable).

TERM. You may not exercise your option before the Date of Grant or after the expiration of the option’s term. The term of your option expires,

subject to the provisions of Section 5(h) of the Plan, upon the earliest of the following:

immediately upon the termination of your Continuous Service for Cause;

twelve  (12)  months  after  the  termination  of  your  Continuous  Service  for  any  reason  other  than  Cause, your  Disability  or  your  death

(except  as  otherwise  provided  in  Section  6(d)  below);  provided,  however,  that  if  during  any  part  of  such  twelve  (12)  month  period  your  option  is  not

exercisable solely because of the condition set forth in the section above relating to “Securities Law Compliance,” your option will not expire until the

earlier  of  the  Expiration  Date  or  until  it  has  been  exercisable  for  an  aggregate  period  of  twelve  (12)  months  after  the  termination  of  your  Continuous

Service; provided further, if during any part of such twelve (12) month period, the sale of any Common Stock received upon exercise of your option would

violate the Company’s insider trading policy, then your option will not expire until the earlier of the Expiration Date or until it has been exercisable for an

aggregate period of three (3) months after the termination of your Continuous Service during which the sale of the Common Stock received upon exercise

of your option would not be in violation of the Company’s insider trading policy;

twelve (12) months after the termination of your Continuous Service due to your Disability (except as otherwise provided in Section 6(d))

below;

eighteen (18) months after your death if you die either during your Continuous Service or within three (3) months after your Continuous

Service terminates for any reason other than Cause;

the Expiration Date indicated in your Grant Notice; or

the day before the tenth (10th) anniversary of the Date of Grant.

NON-EMPLOYEE DIRECTOR FORM

EXERCISE.

You may exercise the vested portion of your option during its term by (i) delivering a Notice of Exercise (in a form designated by the

Company)  or  completing  such  other  documents  and/or  procedures  designated  by  the  Company  for  exercise  and  (ii)  paying  the  exercise  price  and  any

applicable withholding taxes to the Company’s Secretary, stock plan administrator, or such other person as the Company may designate, together with such

additional documents as the Company may then require.

By exercising your option you agree that, as a condition to any exercise of your option, the Company may require you to enter into an

arrangement providing for the payment by you to the Company of any tax withholding obligation of the Company arising by reason of (i) the exercise of

your  option,  (ii)  the  lapse  of  any  substantial  risk  of  forfeiture  to  which  the  shares  of  Common  Stock  are  subject  at  the  time  of  exercise,  or  (iii)  the

disposition of shares of Common Stock acquired upon such exercise.

By accepting your option you agree that you will not sell, dispose of, transfer, make any short sale of, grant any option for the purchase

of,  or  enter  into  any  hedging  or  similar  transaction  with  the  same  economic  effect  as  a  sale,  any  shares  of  Common  Stock  or  other  securities  of  the

Company held by you, for a period of one hundred eighty (180) days following the effective date of a registration statement of the Company filed under the

Securities Act or such longer period as the underwriters or the Company will request to facilitate compliance with FINRA Rule 2241 or NYSE Member

Rule 472 or any successor or similar rules or regulation (the “Lock-Up Period”); provided, however, that nothing contained in this section will prevent the

exercise of a repurchase option, if any, in favor of the Company during the Lock-Up Period. You further agree to execute and deliver such other agreements

as  may  be  reasonably  requested  by  the  Company  or  the  underwriters  that  are  consistent  with  the  foregoing  or  that  are  necessary  to  give  further  effect

thereto. In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions with respect to your shares of Common Stock until

the end of such period. You also agree that any transferee of any shares of Common Stock (or other securities) of the Company held by you will be bound

by this Section 7(c). The underwriters of the Company’s stock are intended third party beneficiaries of this Section 7(c) and will have the right, power and

authority to enforce the provisions hereof as though they were a party hereto.

TRANSFERABILITY. Except as otherwise provided in this Section 8, your option is not transferable, except by will or by the laws of descent

and distribution, and is exercisable during your life only by you.

Certain Trusts. Upon receiving written permission from the Board or its duly authorized designee, you may transfer your option to a

trust if you are considered to be the sole beneficial owner (determined under Section 671 of the Code and applicable state law) while the option is held in

the trust. You and the trustee must enter into transfer and other agreements required by the Company.

Domestic Relations Orders. Upon receiving written permission from the Board or its duly authorized designee, and provided that you

and the designated transferee enter into transfer and other agreements required by the Company, you may transfer your option pursuant to the terms of a

domestic relations order, official marital settlement agreement or other divorce or separation instrument as permitted by Treasury Regulation 1.421-1(b)(2)

that contains the

information required by the Company to effectuate the transfer. You are encouraged to discuss the proposed terms of any division of this option with the

Company prior

NON-EMPLOYEE DIRECTOR FORM

to finalizing the domestic relations order or marital settlement agreement to help ensure the required information is contained within the domestic relations

order or marital settlement agreement.

Beneficiary Designation. Upon  receiving  written  permission  from  the  Board  or  its  duly  authorized  designee,  you  may,  by  delivering

written notice to the Company, in a form approved by the Company and any broker designated by the Company to handle option exercises, designate a

third party who, on your death, will thereafter be entitled to exercise this option and receive the Common Stock or other consideration resulting from such

exercise. In the absence of such a designation, your executor or administrator of your estate will be entitled to exercise this option and receive, on behalf of

your estate, the Common Stock or other consideration resulting from such exercise.

CHANGE IN CONTROL.

If a Change in Control occurs and as of immediately prior to the effective time of such Change in Control your Continuous Service has

not terminated, then, as of the effective time of the Change in Control, the vesting and exercisability of your option will be accelerated in full.

If any payment or benefit you would receive from the Company or otherwise in connection with a Change in Control or other similar

transaction (a “280G Payment”) would (i) constitute a “parachute payment” within the meaning of Section 280G of the Code, and (ii) but for this sentence,

be subject to the excise tax imposed by Section 4999 of the Code (the “Excise Tax”), then any such 280G Payment (a “Payment”) shall be equal to the

Reduced  Amount.  The “Reduced Amount”  shall  be  either  (x)  the  largest  portion  of  the  Payment  that  would  result  in  no  portion  of  the  Payment  (after

reduction)  being  subject  to  the  Excise  Tax  or  (y)  the  largest  portion,  up  to  and  including  the  total,  of  the  Payment,  whichever  amount  (i.e.,  the  amount

determined by clause (x) or by clause (y)), after taking into account all applicable federal, state and local employment taxes, income taxes, and the Excise

Tax (all computed at the highest applicable marginal rate), results in your receipt, on an after-tax basis, of the greater economic benefit notwithstanding that

all or some portion of the Payment may be subject to the Excise Tax. If a reduction in a Payment is required pursuant to the preceding sentence and the

Reduced Amount is determined pursuant to clause (x) of the preceding sentence, the reduction shall occur in the manner (the “Reduction Method”) that

results in the greatest economic benefit for you. If more than one method of reduction will result in the same economic benefit, the items so reduced will be

reduced pro rata (the “Pro Rata Reduction Method”).

Notwithstanding  the  foregoing,  if  the  Reduction  Method  or  the  Pro  Rata  Reduction  Method  would  result  in  any  portion  of  the  Payment  being

subject  to  taxes  pursuant  to  Section  409A  of  the  Code  that  would  not  otherwise  be  subject  to  taxes  pursuant  to  Section  409A  of  the  Code,  then  the

Reduction Method and/or the Pro Rata Reduction Method, as the case may be, shall be modified so as to avoid the imposition of taxes pursuant to Section

409A of the Code as follows: (A) as a first priority, the modification shall preserve to the greatest extent possible, the greatest economic benefit for you as

determined on an after-tax basis; (B) as a second priority, Payments that are contingent on future events (e.g., being terminated without cause), shall be

reduced (or eliminated) before Payments that are not contingent on future events; and (C) as a third priority, Payments that are “deferred compensation”

within the meaning of Section 409A of the Code shall be reduced (or eliminated) before Payments

that are not deferred compensation within the meaning of Section 409A of the Code.

Unless you and the Company agree on an alternative accounting firm, the accounting firm engaged by the Company for

NON-EMPLOYEE DIRECTOR FORM

general  tax  compliance  purposes  as  of  the  day  prior  to  the  effective  date  of  the  change  of  control  transaction  triggering  the  Payment  shall  perform  the

foregoing calculations. If the accounting firm so engaged by the Company is serving as accountant or auditor for the individual, entity or group effecting

the change of control transaction, the Company shall appoint a nationally recognized accounting firm to make the determinations required hereunder. The

Company  shall  bear  all  expenses  with  respect  to  the  determinations  by  such  accounting  firm  required  to  be  made  hereunder.  The  Company  shall  use

commercially  reasonable  efforts  to  cause  the  accounting  firm  engaged  to  make  the  determinations  hereunder  to  provide  its  calculations,  together  with

detailed  supporting  documentation,  to  you  and  the  Company  within  fifteen  (15)  calendar  days  after  the  date  on  which  your  right  to  a  280G  Payment

becomes reasonably likely to occur (if requested at that time by you or the Company) or such other time as requested by you or the Company.

If you receive a Payment for which the Reduced Amount was determined pursuant to clause (x) of the first paragraph of this Section 9(b) and the

Internal Revenue Service determines thereafter that some portion of the Payment is subject to the Excise Tax, you shall promptly return to the Company a

sufficient  amount  of  the  Payment  (after  reduction  pursuant  to  clause  (x)  of  the  first  paragraph  of  this  Section  9(b)  so  that  no  portion  of  the  remaining

Payment is subject to the Excise Tax. For the avoidance of doubt, if the Reduced Amount was determined pursuant to clause (y) in the first paragraph of

this Section 9(b), you shall have no obligation to return any portion of the Payment pursuant to the preceding sentence.

OPTION NOT A SERVICE CONTRACT. Your option is not an employment or service contract, and nothing in your option will be deemed to

create in any way whatsoever any obligation on your part to continue in the employ of the Company or an Affiliate, or of the Company or an Affiliate to

continue your employment. In addition, nothing in your option will obligate the Company or an Affiliate, their respective stockholders, boards of directors,

officers or employees to continue any relationship that you might have as a Director or Consultant for the Company or an Affiliate.

WITHHOLDING OBLIGATIONS.

At the time you exercise your option, in whole or in part, and at any time thereafter as requested by the Company, you hereby authorize

withholding from payroll and any other amounts payable to you, and otherwise agree to make adequate provision for (including by means of a “same day

sale” pursuant to a program developed under Regulation T as promulgated by the Federal Reserve Board to the extent permitted by the Company), any

sums required to satisfy the federal, state, local and foreign tax withholding obligations of the Company or an Affiliate, if any, which arise in connection

with the exercise of your option.

Upon  your  request  and  subject  to  approval  by  the  Company,  and  compliance  with  any  applicable  legal  conditions  or  restrictions,  the

Company may withhold from fully vested shares of Common Stock otherwise issuable to you upon the exercise of your option a number of whole shares of

Common Stock having a Fair Market Value, determined by the Company as of the date of exercise, not in excess of the maximum amount of tax required to

be  withheld  by  law  (or  such  other  amount  as  may  be  permitted  while  still  avoiding  classification  of  your  option  as  a  liability  for  financial  accounting

purposes).  If  the  date  of  determination  of  any  tax  withholding  obligation  is  deferred  to  a  date  later  than  the  date  of  exercise  of  your  option,  share

withholding pursuant to the preceding sentence shall not be permitted unless you make a proper and timely election under Section 83(b) of the

Code,  covering  the  aggregate  number  of  shares  of  Common  Stock  acquired  upon  such  exercise  with  respect  to  which  such  determination  is  otherwise

deferred, to accelerate the determination of such tax withholding obligation to the date of exercise of

NON-EMPLOYEE DIRECTOR FORM

your option. Notwithstanding  the  filing  of  such  election,  shares  of  Common  Stock  shall  be  withheld  solely  from  fully  vested  shares  of  Common  Stock

determined as of the date of exercise of your option that are otherwise issuable to you upon such exercise. Any adverse consequences to you arising in

connection with such share withholding procedure shall be your sole responsibility.

You may not exercise your option unless the tax withholding obligations of the Company and/or any Affiliate are satisfied. Accordingly,

you may not be able to exercise your option when desired even though your option is vested, and the Company will have no obligation to issue a certificate

for such shares of Common Stock or release such shares of Common Stock from any escrow provided for herein, if applicable, unless such obligations are

satisfied.

TAX CONSEQUENCES. You hereby agree that the Company does not have a duty to design or administer the Plan or its other compensation

programs in a manner that minimizes your tax liabilities. You will not make any claim against the Company, or any of its Officers, Directors, Employees or

Affiliates  related  to  tax  liabilities  arising  from  your  option  or  your  other  compensation.  In  particular,  you  acknowledge  that  this  option  is  exempt  from

Section 409A of the Code only if the exercise price per share specified in the Grant Notice is at least equal to the “fair market value” per share of the

Common Stock on the Date of Grant and there is no other impermissible deferral of compensation associated with the option.

NOTICES. Any notices provided for in your option or the Plan will be given in writing (including electronically) and will be deemed effectively

given upon receipt or, in the case of notices delivered by mail by the Company to you, five (5) days after deposit in the United States mail, postage prepaid,

addressed to you at the last address you provided to the Company. The Company may, in its sole discretion, decide to deliver any documents related to

participation in the Plan and this option by electronic means or to request your consent to participate in the Plan by electronic means. By accepting this

option, you consent to receive such documents by electronic delivery and to participate in the Plan through an on-line or electronic system established and

maintained by the Company or another third party designated by the Company.

GOVERNING PLAN DOCUMENT. Your option is subject to all the provisions of the Plan, the provisions of which are hereby made a part of

your  option,  and  is  further  subject  to  all  interpretations,  amendments,  rules  and  regulations,  which  may  from  time  to  time  be  promulgated  and  adopted

pursuant to the Plan. If there is any conflict between the provisions of your option and those of the Plan, the provisions of the Plan will control. In addition,

your  option  (and  any  compensation  paid  or  shares  issued  under  your  option)  is  subject  to  recoupment  in  accordance  with  The  Dodd-Frank  Wall  Street

Reform and Consumer Protection Act and any implementing regulations thereunder, any compensation recovery policy otherwise required by applicable

law and any recoupment or clawback policy adopted by the Company (whether or not required by applicable law).

OTHER DOCUMENTS. You  hereby  acknowledge  receipt  of  and  the  right  to  receive  a  document  providing  the  information  required  by  Rule

428(b)(1) promulgated under the Securities Act, which includes the Plan prospectus. In addition,

you acknowledge receipt of the Company’s policy permitting certain individuals to sell shares only during certain “window” periods and the Company’s

insider trading policy, in effect from time to time.

NON-EMPLOYEE DIRECTOR FORM

EFFECT ON OTHER EMPLOYEE BENEFIT PLANS. The value of this option will not be included as compensation, earnings, salaries, or

other similar terms used when calculating your benefits under any employee benefit plan sponsored by the Company or any Affiliate, except as such plan

otherwise expressly provides. The Company expressly reserves its rights to amend, modify, or terminate any of the Company’s or any Affiliate’s employee

benefit plans.

VOTING RIGHTS. You will not have voting or any other rights as a stockholder of the Company with respect to the shares to be issued pursuant

to this option until such shares are issued to you. Upon such issuance, you will obtain full voting and other rights as a stockholder of the Company. Nothing

contained in this option, and no action taken pursuant to its provisions, will create or be construed to create a trust of any kind or a fiduciary relationship

between you and the Company or any other person.

SEVERABILITY. If all or any part of this Option Agreement or the Plan is declared by any court or governmental authority to be unlawful or

invalid, such unlawfulness or invalidity will not invalidate any portion of this Option Agreement or the Plan not declared to be unlawful or invalid. Any

Section of this Option Agreement (or part of such a Section) so declared to be unlawful or invalid shall, if possible, be construed in a manner which will

give effect to the terms of such Section or part of a Section to the fullest extent possible while remaining lawful and valid.

MISCELLANEOUS.

The  rights  and  obligations  of  the  Company  under  your  option  will  be  transferable  to  any  one  or  more  persons  or  entities,  and  all

covenants and agreements hereunder will inure to the benefit of, and be enforceable by the Company’s successors and assigns.

You agree upon request to execute any further documents or instruments necessary or desirable in the sole determination of the Company

to carry out the purposes or intent of your option.

You acknowledge and agree that you have reviewed your option in its entirety, have had an opportunity to obtain the advice of counsel

prior to executing and accepting your option, and fully understand all provisions of your option.

This Option Agreement will be subject to all applicable laws, rules, and regulations, and to such approvals by any governmental agencies

or national securities exchanges as may be required.

All obligations of the Company under the Plan and this Option Agreement will be binding on any successor to the Company, whether the

existence of such successor is the result of a direct or indirect purchase, merger, consolidation, or otherwise, of all or substantially all of the business and/or

assets of the Company.

This Option Agreement will be deemed to be signed by you upon the signing by you of the Stock Option Grant Notice to which it is attached.

                        *    *    *

NON-EMPLOYEE DIRECTOR FORM

ATTACHMENT II

2019 EQUITY INCENTIVE PLAN

NON-EMPLOYEE DIRECTOR FORM

ATTACHMENT III

NOTICE OF EXERCISE

Bellicum Pharmaceuticals, Inc.

2130 West Holcombe Boulevard, Suite 800

Houston, Texas 77030                    Date of Exercise: _______________

This constitutes notice to Bellicum Pharmaceuticals, Inc. (the “Company”) under my stock option that I elect to purchase the below number of

shares of Common Stock of the Company (the “Shares”) for the price set forth below.

Type of option (check one):
Stock option dated:
Number of Shares as
to which option is 
exercised:
Certificates to be
issued in name of:
Total exercise price:
Cash payment delivered
herewith:
[Value of ________ Shares delivered herewith:

[Value of ________ Shares pursuant to net

2
exercise :

[Regulation T Program (cashless exercise ):

3

Nonstatutory x

_______________

_______________

_______________
$______________

$______________
$______________]

$______________]

$______________]

1
 Shares must meet the public trading requirements set forth in the option. Shares must be valued in accordance with the terms of the option being
exercised, and must be owned free and clear of any liens, claims, encumbrances or security interests. Certificates must be endorsed or accompanied by an
executed assignment separate from certificate.
2 
Bellicum Pharmaceuticals, Inc. must have established net exercise procedures at the time of exercise, in order to utilize this payment method.
3
 Shares must meet the public trading requirements set forth in the option.

By this exercise, I agree (i) to provide such additional documents as you may require pursuant to the terms of the Bellicum Pharmaceuticals, Inc.

2019 Equity Incentive Plan and (ii) to provide for the payment by me to you (in the manner designated by you) of your withholding obligation, if any,

NON-EMPLOYEE DIRECTOR FORM

relating to the exercise of this option.

Very truly yours,

_________________________________________________

DOUBLE TRIGGER FORM

BELLICUM PHARMACEUTICALS, INC.

STOCK OPTION GRANT NOTICE

(2019 EQUITY INCENTIVE PLAN)

Bellicum  Pharmaceuticals,  Inc.  (the  “Company”),  pursuant  to  its  2019  Equity  Incentive  Plan (the “Plan”),  hereby  grants  to  Optionholder  an  option  to

purchase the number of shares of the Company’s Common Stock set forth below. This option is subject to all of the terms and conditions as set forth in this

notice, in the Option Agreement, the Plan and the Notice of Exercise, all of which are attached hereto and incorporated herein in their entirety. Capitalized

terms not explicitly defined herein but defined in the Plan or the Option Agreement will have the same definitions as in the Plan or the Option Agreement.

If there is any conflict between the terms in this notice and the Plan, the terms of the Plan will control.

Optionholder:
Date of Grant:
Vesting Commencement Date:
Number of Shares Subject to Option:
Exercise Price (Per Share):
Total Exercise Price:
Expiration Date:

Type of Grant:        o Incentive Stock Option     o Nonstatutory Stock Option

Exercise Schedule:    x Same as Vesting Schedule     o Early Exercise Permitted

Vesting Schedule:          [One-fourth (1/4 )  of  the  shares  vest  one  year  after  the  later  of  the  (i)  Vesting  Commencement  Date  and  (ii)  Date  of  Grant;  the

th

balance of the shares vest in a series of thirty-six (36) successive equal monthly installments measured from the first anniversary of

the Vesting Commencement Date, subject to Optionholder’s Continuous Service as of each such date     and the potential acceleration

provisions set forth in Section 11 of the Option Agreement]

Payment:     By one or a combination of the following items (described in the Option Agreement):

x     By cash, check, bank draft or money order payable to the Company

x    Pursuant to a Regulation T Program if the shares are publicly traded

x    By delivery of already-owned shares if the shares are publicly traded

x    If and only to the extent this option is a Nonstatutory Stock Option, and subject to the Company’s consent at the time of exercise,

by a “net exercise” arrangement

DOUBLE TRIGGER FORM

Additional Terms/Acknowledgements: Optionholder acknowledges receipt of, and understands and agrees to, this Stock Option Grant Notice, the Option

Agreement  and  the  Plan.  Optionholder  acknowledges  and  agrees  that  this  Stock  Option  Grant  Notice  and  the  Option  Agreement  may  not  be  modified,

amended or revised except as provided in the Plan. Optionholder further acknowledges that as of the Date of Grant, this Stock Option Grant Notice, the

Option Agreement, and the Plan set forth the entire understanding between Optionholder and the Company regarding this option award and supersede all

prior  oral  and  written  agreements,  promises  and/or  representations  on  that  subject  with  the  exception  of  (i)  options  previously  granted  and  delivered  to

Optionholder,  (ii)  any  compensation  recovery  policy  that  is  adopted  by  the  Company  or  is  otherwise  required  by  applicable  law  and  (iii)  any  written

employment  or  severance  arrangement  that  would  provide  for  vesting  acceleration  of  this  option  upon  the  terms  and  conditions  set  forth  therein.  By

accepting this option, Optionholder consents to receive such documents by electronic delivery and to participate in the Plan through an on-line or electronic

system established and maintained by the Company or another third party designated by the Company.

BELLICUM PHARMACEUTICALS, INC.

OPTIONHOLDER:

By:______________________________________
Signature

Title:_____________________________________

_________________________________________
Signature

Date:_____________________________________

Date:_____________________________________

ATTACHMENTS: Option Agreement, 2019 Equity Incentive Plan and Notice of Exercise

DOUBLE TRIGGER FORM

ATTACHMENT I

BELLICUM PHARMACEUTICALS, INC.

2019 EQUITY INCENTIVE PLAN

OPTION AGREEMENT

(INCENTIVE STOCK OPTION OR NONSTATUTORY STOCK OPTION)

Pursuant to your Stock Option Grant Notice (“Grant Notice”) and this Option Agreement, Bellicum Pharmaceuticals, Inc.(the “Company”) has

granted you an option under its 2019 Equity Incentive Plan (the “Plan”) to purchase the number of shares of the Company’s Common Stock indicated in

your Grant Notice at the exercise price indicated in your Grant Notice. The option is granted to you effective as of the date of grant set forth in the Grant

Notice  (the  “Date  of  Grant”).  If  there  is  any  conflict  between  the  terms  in  this  Option  Agreement  and  the  Plan,  the  terms  of  the  Plan  will  control.

Capitalized terms not explicitly defined in this Option Agreement or in the Grant Notice but defined in the Plan will have the same definitions as in the

Plan.

The details of your option, in addition to those set forth in the Grant Notice and the Plan, are as follows:

1.    VESTING. Subject to the provisions contained herein, your option will vest as provided in your Grant Notice. Vesting will cease upon the

termination of your Continuous Service.

2.    NUMBER OF SHARES AND EXERCISE PRICE. The number of shares of Common Stock subject to your option and your exercise price

per share in your Grant Notice will be adjusted for Capitalization Adjustments.

3.    EXERCISE RESTRICTION FOR NON-EXEMPT EMPLOYEES. If you are an Employee eligible for overtime compensation under the

Fair Labor Standards Act of 1938, as amended (that is, a “Non-Exempt Employee”), and except as otherwise provided in the Plan, you may not exercise

your option until you have completed at least six (6) months of Continuous Service measured from the Date of Grant, even if you have already been an

employee for more than six (6) months. Consistent with the provisions of the Worker Economic Opportunity Act, you may exercise your option as to any

vested portion prior to such six (6) month anniversary in the case of (i) your death or disability, (ii) a Corporate Transaction in which your option is not

assumed,  continued  or  substituted,  (iii)  a  Change  in  Control  or  (iv)  your  termination  of  Continuous  Service  on  your  “retirement”  (as  defined  in  the

Company’s benefit plans).

4.    EXERCISE PRIOR TO VESTING (“EARLY EXERCISE”). If permitted in your Grant Notice (i.e., the “Exercise Schedule” indicates

“Early Exercise Permitted”) and subject to the provisions of your option, you may elect at any time that is both (i) during the period of your Continuous

Service and (ii) during the term of your option, to exercise all or part of your option, including the unvested portion of your option; provided, however, that:

a.        a  partial  exercise  of  your  option  will  be  deemed  to  cover  first  vested  shares  of  Common  Stock  and  then  the  earliest  vesting

installment of unvested shares of Common Stock;

DOUBLE TRIGGER FORM

b.    any shares of Common Stock so purchased from installments that have not vested as of the date of exercise will be subject to the

purchase option in favor of the Company as described in the Company’s form of Early Exercise Stock Purchase Agreement;

c.    you will enter into the Company’s form of Early Exercise Stock Purchase Agreement with a vesting schedule that will result in the

same vesting as if no early exercise had occurred; and

d.    if your option is an Incentive Stock Option, then, to the extent that the aggregate Fair Market Value (determined at the Date of Grant)

of the shares of Common Stock with respect to which your option plus all other Incentive Stock Options you hold are exercisable for the first time by you

during any calendar year (under all plans of the Company and its Affiliates) exceeds one hundred thousand dollars ($100,000), your option(s) or portions

thereof that exceed such limit (according to the order in which they were granted) will be treated as Nonstatutory Stock Options.

5.    METHOD OF PAYMENT. You must pay the full amount of the exercise price for the shares you wish to exercise. You may pay the exercise

price in cash or by check, bank draft or money order payable to the Company or in any other manner permitted by your Grant Notice, which may include

one or more of the following:

a.    Provided that at the time of exercise the Common Stock is publicly traded, pursuant to a program developed under Regulation T as

promulgated by the Federal Reserve Board that, prior to the issuance of Common Stock, results in either the receipt of cash (or check) by the Company or

the receipt of irrevocable instructions to pay the aggregate exercise price to the Company from the sales proceeds. This manner of payment is also known

as a “broker-assisted exercise”, “same day sale”, or “sell to cover”.

b.    Provided that at the time of exercise the Common Stock is publicly traded, by delivery to the Company (either by actual delivery or

attestation) of already-owned shares of Common Stock that are owned free and clear of any liens, claims, encumbrances or security interests, and that are

valued at Fair Market Value on the date of exercise. “Delivery” for these purposes, in the sole discretion of the Company at the time you exercise your

option, will include delivery to the Company of your attestation of ownership of such shares of Common Stock in a form approved by the Company. You

may not exercise your option by delivery to the Company of Common Stock if doing so would violate the provisions of any law, regulation or agreement

restricting the redemption of the Company’s stock.

c.    If this option is a Nonstatutory Stock Option, subject to the consent of the Company at the time of exercise, by a “net exercise”

arrangement pursuant to which the Company will reduce the number of shares of Common Stock issued upon exercise of your option by the largest whole

number  of  shares  with  a  Fair  Market  Value  that  does  not  exceed  the  aggregate  exercise  price.  You  must  pay  any  remaining  balance  of  the  aggregate

exercise price not satisfied by the “net exercise” in cash or other permitted form of payment. Shares of Common Stock will no longer be outstanding under

your option and will not be exercisable thereafter if those shares (i) are used to pay the exercise price pursuant to the “net exercise,” (ii) are delivered to you

as a result of such exercise, and (iii) are withheld to satisfy your tax withholding obligations.

6.    WHOLE SHARES. You may exercise your option only for whole shares of Common Stock.

DOUBLE TRIGGER FORM

7.    SECURITIES LAW COMPLIANCE. In no event may you exercise your option unless the shares of Common Stock issuable upon exercise

are then registered under the Securities Act or, if not registered, the Company has determined that your exercise and the issuance of the shares would be

exempt  from  the  registration  requirements  of  the  Securities  Act.  The  exercise  of  your  option  also  must  comply  with  all  other  applicable  laws  and

regulations  governing  your  option,  and  you  may  not  exercise  your  option  if  the  Company  determines  that  such  exercise  would  not  be  in  material

compliance with such laws and regulations (including any restrictions on exercise required for compliance with Treas. Reg. 1.401(k)-1(d)(3), if applicable).

8.    TERM. You  may  not  exercise  your  option  before  the  Date  of  Grant  or  after  the  expiration  of  the  option’s  term.  The  term  of  your  option

expires, subject to the provisions of Section 5(h) of the Plan, upon the earliest of the following:

a.    immediately upon the termination of your Continuous Service for Cause;

b.    three (3) months after the termination of your Continuous Service for any reason other than Cause, your Disability or your death

(except  as  otherwise  provided  in  Section  8(d)  below);  provided,  however,  that  if  during  any  part  of  such  three  (3)  month  period  your  option  is  not

exercisable solely because of the condition set forth in the section above relating to “Securities Law Compliance,” your option will not expire until the

earlier of the Expiration Date or until it has been exercisable for an aggregate period of three (3) months after the termination of your Continuous Service;

provided further, if during any part of such three (3) month period, the sale of any Common Stock received upon exercise of your option would violate the

Company’s insider trading policy, then your option will not expire until the earlier of the Expiration Date or until it has been exercisable for an aggregate

period of three (3) months after the termination of your Continuous Service during which the sale of the Common Stock received upon exercise of your

option would not be in violation of the Company’s insider trading policy. Notwithstanding the foregoing, if (i) you are a Non-Exempt Employee, (ii) your

Continuous  Service  terminates  within  six  (6)  months  after  the  Date  of  Grant,  and  (iii)  you  have  vested  in  a  portion  of  your  option  at  the  time  of  your

termination of Continuous Service, your option will not expire until the earlier of (x) the later of (A) the date that is seven (7) months after the Date of

Grant, and (B) the date that is three (3) months after the termination of your Continuous Service, and (y) the Expiration Date;

c.    twelve (12) months after the termination of your Continuous Service due to your Disability (except as otherwise provided in Section

8(d)) below;

d.        eighteen  (18)  months  after  your  death  if  you  die  either  during  your  Continuous  Service  or  within  three  (3)  months  after  your

Continuous Service terminates for any reason other than Cause;

e.    the Expiration Date indicated in your Grant Notice; or

f.    the day before the tenth (10th) anniversary of the Date of Grant.

If your option is an Incentive Stock Option, note that to obtain the federal income tax advantages associated with an Incentive Stock Option, the

Code requires that at all times beginning on the Date of Grant and ending on the day three (3) months before the date of your option’s exercise, you must be

an employee of the Company or an Affiliate, except in the event

of your death or Disability. The Company has provided for extended exercisability of your option under certain circumstances for your benefit but cannot

guarantee that your option will necessarily be treated as an Incentive Stock Option if you continue to provide

DOUBLE TRIGGER FORM

services to the Company or an Affiliate as a Consultant or Director after your employment terminates or if you otherwise exercise your option more than

three (3) months after the date your employment with the Company or an Affiliate terminates.

9.    EXERCISE.

a.    You may exercise the vested portion of your option (and the unvested portion of your option if your Grant Notice so permits) during

its term by (i) delivering a Notice of Exercise (in a form designated by the Company) or completing such other documents and/or procedures designated by

the Company for exercise and (ii) paying the exercise price and any applicable withholding taxes to the Company’s Secretary, stock plan administrator, or

such other person as the Company may designate, together with such additional documents as the Company may then require.

b.    By exercising your option you agree that, as a condition to any exercise of your option, the Company may require you to enter into

an arrangement providing for the payment by you to the Company of any tax withholding obligation of the Company arising by reason of (i) the exercise of

your  option,  (ii)  the  lapse  of  any  substantial  risk  of  forfeiture  to  which  the  shares  of  Common  Stock  are  subject  at  the  time  of  exercise,  or  (iii)  the

disposition of shares of Common Stock acquired upon such exercise.

c.    If your option is an Incentive Stock Option, by exercising your option you agree that you will notify the Company in writing within

fifteen (15) days after the date of any disposition of any of the shares of the Common Stock issued upon exercise of your option that occurs within two (2)

years after the Date of Grant or within one (1) year after such shares of Common Stock are transferred upon exercise of your option.

d.        By  accepting  your  option  you  agree  that  you  will  not  sell,  dispose  of,  transfer,  make  any  short  sale  of,  grant  any  option  for  the

purchase of, or enter into any hedging or similar transaction with the same economic effect as a sale, any shares of Common Stock or other securities of the

Company held by you, for a period of one hundred eighty (180) days following the effective date of a registration statement of the Company filed under the

Securities Act or such longer period as the underwriters or the Company will request to facilitate compliance with FINRA Rule 2241 or NYSE Member

Rule 472 or any successor or similar rules or regulation (the “Lock-Up Period”); provided, however, that nothing contained in this section will prevent the

exercise of a repurchase option, if any, in favor of the Company during the Lock-Up Period. You further agree to execute and deliver such other agreements

as  may  be  reasonably  requested  by  the  Company  or  the  underwriters  that  are  consistent  with  the  foregoing  or  that  are  necessary  to  give  further  effect

thereto. In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions with respect to your shares of Common Stock until

the end of such period.

You also agree that any transferee of any shares of Common Stock (or other securities) of the Company held by you will be bound by this Section 9(d). The

underwriters of the Company’s stock are intended third party beneficiaries of this Section 9(d) and will have the right, power and authority to enforce the

provisions hereof as though they were a party hereto.

10.    TRANSFERABILITY. Except as otherwise provided in this Section 10, your option is not transferable, except by will or by the laws of

descent and distribution, and is exercisable during your life only by you.

DOUBLE TRIGGER FORM

a.    Certain Trusts. Upon receiving written permission from the Board or its duly authorized designee, you may transfer your option to a

trust if you are considered to be the sole beneficial owner (determined under Section 671 of the Code and applicable state law) while the option is held in

the trust. You and the trustee must enter into transfer and other agreements required by the Company.

b.    Domestic Relations Orders. Upon receiving written permission from the Board or its duly authorized designee, and provided that

you and the designated transferee enter into transfer and other agreements required by the Company, you may transfer your option pursuant to the terms of

a domestic relations order, official marital settlement agreement or other divorce or separation instrument as permitted by Treasury Regulation 1.421-1(b)

(2) that contains the information required by the Company to effectuate the transfer. You are encouraged to discuss the proposed terms of any division of

this option with the Company prior to finalizing the domestic relations order or marital settlement agreement to help ensure the required information is

contained within the domestic relations order or marital settlement agreement. If this option is an Incentive Stock Option, this option may be deemed to be

a Nonstatutory Stock Option as a result of such transfer.

c.    Beneficiary Designation. Upon receiving written permission from the Board or its duly authorized designee, you may, by delivering

written notice to the Company, in a form approved by the Company and any broker designated by the Company to handle option exercises, designate a

third party who, on your death, will thereafter be entitled to exercise this option and receive the Common Stock or other consideration resulting from such

exercise. In the absence of such a designation, your executor or administrator of your estate will be entitled to exercise this option and receive, on behalf of

your estate, the Common Stock or other consideration resulting from such exercise.

11.    CHANGE IN CONTROL.

a.    If a Change in Control occurs and immediately prior to or within twelve (12) months after, the effective time of such Change in

Control  your  Continuous  Service  terminates  due  to  an  involuntary  termination  (not  including  death  or  Disability)  without  Cause  or  due  to  a  voluntary

termination with Good Reason, then, as of the date of termination of Continuous Service, the vesting and exercisability of your option will be accelerated in

full.

b.        “Good  Reason”  means  that  one  or  more  of  the  following  are  undertaken  by  the  Company  (or  successor  to  the  Company,  if

applicable)  without  your  express  written  consent:  (i)  a  material  reduction  in  your  annual  base  salary;  provided, however,  that  Good  Reason  will  not  be

deemed to have occurred in the event of a reduction in your annual base salary that is pursuant to a salary reduction program affecting substantially all of

the employees of the Company and that does not adversely affect you to a greater extent than other similarly situated employees; (ii) a material reduction in

your authority, duties or responsibilities; (iii) any failure by the Company to continue in effect any material benefit plan or program, including incentive

plans  or  plans  with  respect  to  the  receipt  of  securities  of  the  Company,  in  which  you  were  participating  immediately  prior  to  the  effective  date  of  the

Change in Control (hereinafter referred to as “Benefit Plans”), or the taking of any action by the Company that would adversely affect your participation in

or reduce your benefits under the Benefit Plans or deprive you of any fringe benefit that you enjoyed immediately prior to the effective date of the Change

in Control; provided, however, that Good Reason will not be deemed to have occurred if the Company provides for your participation in benefit plans

and programs that, taken as a whole, are comparable to the Benefit Plans; (iv) a relocation of your principal place of employment with the Company (or

DOUBLE TRIGGER FORM

successor to the Company, if applicable) to a place that increases your one-way commute by more than fifty (50) miles as compared to your then-current

principal place of employment immediately prior to such relocation, except for required travel by you on the Company’s business to an extent substantially

consistent  with  your  business  travel  obligations  prior  to  the  effective  date  of  the  Change  in  Control;  or  (v)  a  material  breach  by  the  Company  of  any

provision of the Plan or the Option Agreement or any other material agreement between you and the Company concerning the terms and conditions of your

employment or service with the Company.

c.    If any payment or benefit you would receive from the Company or otherwise in connection with a Change in Control or other similar

transaction (a “280G Payment”) would (i) constitute a “parachute payment” within the meaning of Section 280G of the Code, and (ii) but for this sentence,

be subject to the excise tax imposed by Section 4999 of the Code (the “Excise Tax”), then any such 280G Payment (a “Payment”) shall be equal to the

Reduced  Amount.  The “Reduced Amount”  shall  be  either  (x)  the  largest  portion  of  the  Payment  that  would  result  in  no  portion  of  the  Payment  (after

reduction)  being  subject  to  the  Excise  Tax  or  (y)  the  largest  portion,  up  to  and  including  the  total,  of  the  Payment,  whichever  amount  (i.e.,  the  amount

determined by clause (x) or by clause (y)), after taking into account all applicable federal, state and local employment taxes, income taxes, and the Excise

Tax (all computed at the highest applicable marginal rate), results in your receipt, on an after-tax basis, of the greater economic benefit notwithstanding that

all or some portion of the Payment may be subject to the Excise Tax. If a reduction in a Payment is required pursuant to the preceding sentence and the

Reduced Amount is determined pursuant to clause (x) of the preceding sentence, the reduction shall occur in the manner (the “Reduction Method”) that

results in the greatest economic benefit for you. If more than one method of reduction will result in the same economic benefit, the items so reduced will be

reduced pro rata (the “Pro Rata Reduction Method”).

Notwithstanding  the  foregoing,  if  the  Reduction  Method  or  the  Pro  Rata  Reduction  Method  would  result  in  any  portion  of  the  Payment  being

subject  to  taxes  pursuant  to  Section  409A  of  the  Code  that  would  not  otherwise  be  subject  to  taxes  pursuant  to  Section  409A  of  the  Code,  then  the

Reduction Method and/or the Pro Rata Reduction Method, as the case may be, shall be modified so as to avoid the imposition of taxes pursuant to Section

409A of the Code as follows: (A) as a first priority, the modification shall preserve to the greatest extent possible, the greatest economic benefit for you as

determined on an after-tax basis; (B) as a second priority, Payments that are contingent on future events (e.g., being terminated without cause), shall be

reduced (or eliminated) before Payments that are not contingent on future events; and (C) as a third priority, Payments that are “deferred compensation”

within the meaning of Section 409A of the Code shall be reduced (or eliminated) before Payments that are not deferred compensation within the meaning

of Section 409A of the Code.

Unless you and the Company agree on an alternative accounting firm, the accounting firm engaged by the Company for general tax compliance

purposes as of the day prior to the effective date of the change of control transaction triggering the Payment shall perform the foregoing calculations. If the

accounting  firm  so  engaged  by  the  Company  is  serving  as  accountant  or  auditor  for  the  individual,  entity  or  group  effecting  the  change  of  control

transaction, the Company shall appoint a nationally recognized accounting firm to make the determinations required hereunder. The Company shall bear all

expenses  with  respect  to  the  determinations  by  such  accounting  firm  required  to  be  made  hereunder.  The  Company  shall  use  commercially  reasonable

efforts to cause the accounting firm engaged to make the determinations hereunder to provide its calculations, together with

detailed supporting documentation, to you and the Company within fifteen (15) calendar days after the date on which your right to a 280G

DOUBLE TRIGGER FORM

Payment becomes reasonably likely to occur (if requested at that time by you or the Company) or such other time as requested by you or the Company.

If you receive a Payment for which the Reduced Amount was determined pursuant to clause (x) of the first paragraph of this Section 11(b) and the

Internal Revenue Service determines thereafter that some portion of the Payment is subject to the Excise Tax, you shall promptly return to the Company a

sufficient  amount  of  the  Payment  (after  reduction  pursuant  to  clause  (x)  of  the  first  paragraph  of  this  Section  11(b)  so  that  no  portion  of  the  remaining

Payment is subject to the Excise Tax. For the avoidance of doubt, if the Reduced Amount was determined pursuant to clause (y) in the first paragraph of

this Section 11(b), you shall have no obligation to return any portion of the Payment pursuant to the preceding sentence.

12.        OPTION  NOT  A  SERVICE  CONTRACT. Your  option  is  not  an  employment  or  service  contract,  and  nothing  in  your  option  will  be

deemed to create in any way whatsoever any obligation on your part to continue in the employ of the Company or an Affiliate, or of the Company or an

Affiliate to continue your employment. In addition, nothing in your option will obligate the Company or an Affiliate, their respective stockholders, boards

of directors, officers or employees to continue any relationship that you might have as a Director or Consultant for the Company or an Affiliate.

13.    WITHHOLDING OBLIGATIONS.

a.       At  the  time  you  exercise  your  option,  in  whole  or  in  part,  and  at  any  time  thereafter  as  requested  by  the  Company,  you  hereby

authorize withholding from payroll and any other amounts payable to you, and otherwise agree to make adequate provision for (including by means of a

“same  day  sale”  pursuant  to  a  program  developed  under  Regulation  T  as  promulgated  by  the  Federal  Reserve  Board  to  the  extent  permitted  by  the

Company), any sumsrequired to satisfy the federal, state, local and foreign tax withholding obligations of the Company or an Affiliate, if any, which arise

in connection with the exercise of your option.

b.    If this option is a Nonstatutory Stock Option, then upon your request and subject to approval by the Company, and compliance with

any applicable legal conditions or restrictions, the Company may withhold from fully vested shares of Common Stock otherwise issuable to you upon the

exercise of your option a number of whole shares of Common Stock having a Fair Market Value, determined by the Company as of the date of exercise, not

in excess of the maximum amount of tax required to be withheld by law (or such other amount as may be permitted while still avoiding classification of

your option as a liability for financial accounting purposes). If the date of determination of any tax withholding obligation is deferred to a date later than the

date of exercise of your option, share withholding pursuant to the preceding sentence shall not be permitted unless you make a proper and timely election

under  Section  83(b)  of  the  Code,  covering  the  aggregate  number  of  shares  of  Common  Stock  acquired  upon  such  exercise  with  respect  to  which  such

determination  is  otherwise  deferred,  to  accelerate  the  determination  of  such  tax  withholding  obligation  to  the  date  of  exercise  of  your  option.

Notwithstanding the filing of such election, shares of Common Stock shall be withheld solely from fully vested shares of Common Stock determined as of

the date of exercise of your option that are otherwise issuable to you upon such exercise. Any adverse consequences to you arising in connection with such

share withholding procedure shall be your sole responsibility.

DOUBLE TRIGGER FORM

c.        You  may  not  exercise  your  option  unless  the  tax  withholding  obligations  of  the  Company  and/or  any  Affiliate  are  satisfied.

Accordingly, you may not be able to exercise your option when desired even though your option is vested, and the Company will have no obligation to

issue a certificate for such shares of Common Stock or release such shares of Common Stock from any escrow provided for herein, if applicable, unless

such obligations are satisfied.

14.        TAX  CONSEQUENCES.  You  hereby  agree  that  the  Company  does  not  have  a  duty  to  design  or  administer  the  Plan  or  its  other

compensation programs in a manner that minimizes your tax liabilities. You will not make any claim against the Company, or any of its Officers, Directors,

Employees or Affiliates related to tax liabilities arising from your option or your other compensation. In particular, you acknowledge that this option is

exempt from Section 409A of the Code only if the exercise price per share specified in the Grant Notice is at least equal to the “fair market value” per share

of the Common Stock on the Date of Grant and there is no other impermissible deferral of compensation associated with the option.

15.        NOTICES. Any  notices  provided  for  in  your  option  or  the  Plan  will  be  given  in  writing  (including  electronically)  and  will  be  deemed

effectively given upon receipt or, in the case of notices delivered by mail by the Company to you, five (5) days after deposit in the United States mail,

postage  prepaid,  addressed  to  you  at  the  last  address  you  provided  to  the  Company.  The  Company  may,  in  its  sole  discretion,  decide  to  deliver  any

documents related to participation in the Plan and this option by electronic means or to request your consent to participate in the Plan by electronic means.

By  accepting  this  option,  you  consent  to  receive  such  documents  by  electronic  delivery  and  to  participate  in  the  Plan  through  an  on-line  or  electronic

system established and maintained by the Company or another third party designated by the Company.

16.    GOVERNING PLAN DOCUMENT. Your option is subject to all the provisions of the Plan, the provisions of which are hereby made a

part  of  your  option,  and  is  further  subject  to  all  interpretations,  amendments,  rules  and  regulations,  which  may  from  time  to  time  be  promulgated  and

adopted pursuant to the Plan. If there is any conflict between the provisions of your option and those of the Plan, the provisions of the Plan will control. In

addition, your option (and any compensation paid or shares issued under your option) is subject to recoupment in accordance with The Dodd-Frank Wall

Street  Reform  and  Consumer  Protection  Act  and  any  implementing  regulations  thereunder,  any  compensation  recovery  policy  otherwise  required  by

applicable law and any recoupment or clawback policy adopted by the Company (whether or not required by applicable law).

17.    OTHER DOCUMENTS. You hereby acknowledge receipt of and the right to receive a document providing the information required by

Rule 428(b)(1) promulgated under the Securities Act, which includes the Plan prospectus. In addition, you acknowledge receipt of the Company’s policy

permitting certain individuals to sell shares only during certain “window” periods and the Company’s insider trading policy, in effect from time to time.

18.    EFFECT ON OTHER EMPLOYEE BENEFIT PLANS. The value of this option will not be included as compensation, earnings, salaries,

or other similar terms used when calculating your benefits under any employee benefit plan sponsored by the Company or any Affiliate, except as such

plan  otherwise  expressly  provides.  The  Company  expressly  reserves  its  rights  to  amend,  modify,  or  terminate  any  of  the  Company’s  or  any  Affiliate’s

employee benefit plans.

19.    VOTING RIGHTS. You will not have voting or any other rights as a stockholder of the Company with respect to the shares to be issued

pursuant to this option until such shares are issued to you. Upon such issuance, you will obtain full

DOUBLE TRIGGER FORM

voting and other rights as a stockholder of the Company. Nothing contained in this option, and no action taken pursuant to its provisions, will create or be

construed to create a trust of any kind or a fiduciary relationship between you and the Company or any other person.

20.    SEVERABILITY. If all or any part of this Option Agreement or the Plan is declared by any court or governmental authority to be unlawful

or invalid, such unlawfulness or invalidity will not invalidate any portion of this Option Agreement or the Plan not declared to be unlawful or invalid. Any

Section of this Option Agreement (or part of such a Section) so declared to be unlawful or invalid shall, if possible, be construed in a manner which will

give effect to the terms of such Section or part of a Section to the fullest extent possible while remaining lawful and valid.

21.    MISCELLANEOUS.

a.    The rights and obligations of the Company under your option will be transferable to any one or more persons or entities, and all

covenants and agreements hereunder will inure to the benefit of, and be enforceable by the Company’s successors and assigns.

b.       You  agree  upon  request  to  execute  any  further  documents  or  instruments  necessary  or  desirable  in  the  sole  determination  of  the

Company to carry out the purposes or intent of your option.

c.       You  acknowledge  and  agree  that  you  have  reviewed  your  option  in  its  entirety,  have  had  an  opportunity  to  obtain  the  advice  of

counsel prior to executing and accepting your option, and fully understand all provisions of your option.

d.    This Option Agreement will be subject to all applicable laws, rules, and regulations, and to such approvals by any governmental

agencies or national securities exchanges as may be required.

e.    All obligations of the Company under the Plan and this Option Agreement will be binding on any successor to the Company, whether

the existence of such successor is the result of a direct or indirect purchase, merger, consolidation, or otherwise, of all or substantially all of the business

and/or assets of the Company.

This Option Agreement will be deemed to be signed by you upon the signing by you of the Stock Option Grant Notice to which it is attached.

                        *    *    *

DOUBLE TRIGGER FORM

ATTACHMENT II

2019 EQUITY INCENTIVE PLAN

DOUBLE TRIGGER FORM

ATTACHMENT III

NOTICE OF EXERCISE

Bellicum Pharmaceuticals, Inc.

Life Sciences Plaza

2130 West Holcombe Boulevard, Suite 850

Houston, Texas 77030                        Date of Exercise: _______________

This constitutes notice to Bellicum Pharmaceuticals, Inc. (the “Company”) under my stock option that I elect to purchase the below number of

shares of Common Stock of the Company (the “Shares”) for the price set forth below.

Type of option (check one):
Stock option dated:
Number of Shares as
to which option is 
exercised:
Certificates to be
issued in name of:
Total exercise price:
Cash payment delivered
herewith:
[Value of ________ Shares delivered herewith:

[Value of ________ Shares pursuant to net
2
exercise :

[Regulation T Program (cashless exercise ):

3

Incentive o
_______________

Nonstatutory o
_______________

_______________

_______________

_______________
$______________

$______________
$______________

$______________

$______________

_______________
$______________

$______________
$______________]

$______________]

$______________]

1
 Shares must meet the public trading requirements set forth in the option. Shares must be valued in accordance with the terms of the option being
exercised, and must be owned free and clear of any liens, claims, encumbrances or security interests. Certificates must be endorsed or accompanied by an
executed assignment separate from certificate.
2 
The option must be a Nonstatutory Stock Option, and Bellicum Pharmaceuticals, Inc. must have established net exercise procedures at the time of
exercise, in order to utilize this payment method.
3
 Shares must meet the public trading requirements set forth in the option.

By this exercise, I agree (i) to provide such additional documents as you may require pursuant to the terms of the Bellicum Pharmaceuticals, Inc.

2019 Equity Incentive Plan, (ii) to provide for the payment by me to you (in the manner designated by you) of your withholding obligation, if any, relating

to the exercise of this option, and (iii) if this exercise relates to an incentive stock option, to notify you in writing within fifteen (15) days after the date of

any disposition of any of the Shares issued upon exercise of this option that occurs within two (2) years after the date of grant of this option or within one

(1) year after such Shares are issued upon exercise of this option.

DOUBLE TRIGGER FORM

Very truly yours,

___________________________________    

RESTRICTED STOCK UNIT FORM

BELLICUM PHARMACEUTICALS, INC.

RESTRICTED STOCK UNIT GRANT NOTICE

(2019 EQUITY INCENTIVE PLAN)

Bellicum Pharmaceuticals, Inc. (the “Company”), pursuant to Section 6(b) of the Company’s 2019 Equity Incentive Plan (the “Plan”), hereby awards to

Participant  a  Restricted  Stock  Unit  Award  for  the  number  of  shares  of  the  Company’s  Common  Stock  (“Restricted  Stock  Units”)  set  forth  below  (the

“Award”). The Award is subject to all of the terms and conditions as set forth in this notice of grant (this “Restricted Stock Unit Grant Notice”) and in the

Plan and the Restricted Stock Unit Award Agreement (the “Award Agreement”), both of which are attached hereto and incorporated herein in their entirety.

Capitalized terms not otherwise defined herein shall have the meanings set forth in the Plan or the Award Agreement. In the event of any conflict between

the terms in the Award and the Plan, the terms of the Plan shall control.

Participant:            _________________________    

Date of Grant:            _________________________    

Grant Number:            _________________________    

Vesting Commencement Date:     _________________________        

Number of Restricted Stock Units:    _________________________    

Vesting  Schedule:          [25%  of  the  Restricted  Stock  Units  will  vest  on  the  one  year  anniversary  of  the  earlier  of  the  (i)  Date  of  Grant  and  (ii)  Vesting

Commencement Date and 25% of the Restricted Stock Units will vest on each of the two, three and four year anniversaries of

the Vesting Commencement Date, subject to the Participant’s Continuous Service through each such vesting date]

Issuance Schedule:    Subject to any Capitalization Adjustment, one share of Common Stock (or its cash equivalent, at the discretion of the Company) will

be issued for each Restricted Stock Unit that vests at the time set forth in Section 6 of the Award Agreement.

Additional Terms/Acknowledgements: Participant acknowledges receipt of, and understands and agrees to, this Restricted Stock Unit Grant Notice, the

Award  Agreement  and  the  Plan.  Participant  further  acknowledges  that  as  of  the  Date  of  Grant,  this  Restricted  Stock  Unit  Grant  Notice,  the  Award

Agreement and the Plan set forth the entire understanding between Participant and the Company regarding the acquisition of the Common Stock pursuant

to the Award specified above and supersede all prior oral and written agreements on the terms of this Award with the exception, if applicable, of (i) the

written employment agreement, offer letter or other written agreement entered into between the Company and Participant specifying the terms that should

govern this specific Award, (ii) restricted stock unit awards or options previously granted and delivered to Participant, and (iii) any compensation recovery

policy that is adopted by the Company or is otherwise required by applicable law.

By accepting this Award, Participant acknowledges having received and read the Restricted Stock Unit Grant Notice, the Award Agreement and the Plan

and agrees to all of the terms and conditions set forth in these documents. Participant consents to receive

Plan documents by electronic delivery and to participate in the Plan through an on-line or electronic system established and maintained by the Company or

another third party designated by the Company.

RESTRICTED STOCK UNIT FORM

BELLICUM PHARMACEUTICALS, INC.
By:______________________________________
Signature
Title:_____________________________________
Date:_____________________________________

PARTICIPANT

_________________________________________
Signature

Date:_____________________________________

ATTACHMENTS:     Award Agreement and 2019 Equity Incentive Plan

RESTRICTED STOCK UNIT FORM

BELLICUM PHARMACEUTICALS, INC.

2019 EQUITY INCENTIVE PLAN

RESTRICTED STOCK UNIT AWARD AGREEMENT

Pursuant to the Restricted Stock Unit Grant Notice (the “Grant Notice”)  and  this  Restricted  Stock  Unit  Award  Agreement  (the  “Agreement”),

Bellicum Pharmaceuticals, Inc. (the “Company”) has awarded you (“Participant”) a Restricted Stock Unit Award (the “Award”) pursuant to Section 6(b)

of the Company’s 2019 Equity Incentive Plan (the “Plan”) for the number of Restricted Stock Units/shares indicated in the Grant Notice. Capitalized terms

not explicitly defined in this Agreement or the Grant Notice shall have the same meanings given to them in the Plan. The terms of your Award, in addition

to those set forth in the Grant Notice, are as follows.

1.    GRANT OF THE AWARD. This Award represents the right to be issued on a future date one (1) share of Common Stock for each Restricted

Stock Unit that vests on the applicable vesting date(s) (subject to any adjustment under Section 3 below) as indicated in the Grant Notice. As of the Date of

Grant, the Company will credit to a bookkeeping account maintained by the Company for your benefit (the “Account”) the number of Restricted Stock

Units/shares of Common Stock subject to the Award. Notwithstanding the foregoing, the Company reserves the right to issue you the cash equivalent of

Common Stock, in part or in full satisfaction of the delivery of Common Stock in connection with the vesting of the Restricted Stock Units, and, to the

extent  applicable,  references  in  this  Agreement  and  the  Grant  Notice  to  Common  Stock  issuable  in  connection  with  your  Restricted  Stock  Units  will

include the potential issuance of its cash equivalent pursuant to such right. This Award was granted in consideration of your services to the Company.

2.    VESTING. Subject to the limitations contained herein, your Award will vest, if at all, in accordance with the vesting schedule provided in the

Grant Notice, provided that vesting will cease upon the termination of your Continuous Service. Upon such termination of your Continuous Service, the

Restricted Stock Units/shares of Common Stock credited to the Account that were not vested on the date of such termination will be forfeited at no cost to

the Company and you will have no further right, title or interest in or to such underlying shares of Common Stock.

3.        NUMBER  OF  SHARES.  The  number  of  Restricted  Stock  Units/shares  subject  to  your  Award  may  be  adjusted  from  time  to  time  for

Capitalization  Adjustments,  as  provided  in  the  Plan.  Any  additional  Restricted  Stock  Units,  shares,  cash  or  other  property  that  becomes  subject  to  the

Award  pursuant  to  this  Section  3,  if  any,  shall  be  subject,  in  a  manner  determined  by  the  Board,  to  the  same  forfeiture  restrictions,  restrictions  on

transferability, and time and manner of delivery as applicable to the other Restricted Stock Units and shares covered by your Award. Notwithstanding the

provisions of this Section 3, no fractional shares or rights for fractional shares of Common Stock shall be created pursuant to this Section 3. Any fraction of

a share will be rounded down to the nearest whole share.

4.    SECURITIES LAW COMPLIANCE. You may not be issued any Common Stock under your Award unless the shares of Common Stock

underlying the Restricted Stock Units are either (i) then registered under the Securities Act, or (ii) the Company has determined that such issuance would

be exempt from the registration requirements of the Securities Act. Your Award must also comply with other applicable laws and regulations governing the

Award, and you shall not receive such

Common Stock if the Company determines that such receipt would not be in material compliance with such laws and regulations.

RESTRICTED STOCK UNIT FORM

5.    TRANSFER RESTRICTIONS. Prior to the time that shares of Common Stock have been delivered to you, you may not transfer, pledge,

sell or otherwise dispose of this Award or the shares issuable in respect of your Award, except as expressly provided in this Section 5. For example, you

may not use shares that may be issued in respect of your Restricted Stock Units as security for a loan. The restrictions on transfer set forth herein will lapse

upon delivery to you of shares in respect of your vested Restricted Stock Units.

a.    Death. Your Award is transferable by will and by the laws of descent and distribution. At your death, vesting of your Award will

cease and your executor or administrator of your estate shall be entitled to receive, on behalf of your estate, any Common Stock or other consideration that

vested but was not issued before your death.

b.    Domestic Relations Orders. Upon receiving written permission from the Board or its duly authorized designee, and provided that

you and the designated transferee enter into transfer and other agreements required by the Company, you may transfer your right to receive the distribution

of  Common  Stock  or  other  consideration  hereunder,  pursuant  to  a  domestic  relations  order,  marital  settlement  agreement  or  other  divorce  or  separation

instrument as permitted by applicable law that contains the information required by the Company to effectuate the transfer. You are encouraged to discuss

the proposed terms of any division of this Award with the Company General Counsel prior to finalizing the domestic relations order or marital settlement

agreement to verify that you may make such transfer, and if so, to help ensure the required information is contained within the domestic relations order or

marital settlement agreement.

6.    DATE OF ISSUANCE.

a.    The issuance of shares in respect of the Restricted Stock Units is intended to comply with Treasury Regulations Section 1.409A-1(b)

(4) and will be construed and administered in such a manner.

Subject to the satisfaction of the Withholding Taxes set forth in Section 11 of this Agreement, in the event one or more Restricted Stock

Units vests, the Company shall issue to you one (1) share of Common Stock for each Restricted Stock Unit that vests on the applicable vesting date(s)

(subject to any adjustment under Section 3 above). Each issuance date determined by this paragraph is referred to as an “Original Issuance Date”.

b.    If the Original Issuance Date falls on a date that is not a business day, delivery shall instead occur on the next following business day.

In addition, if:

1)    the Original Issuance Date does not occur (1) during an “open window period” applicable to you, as determined by the

Company in accordance with the Company’s then-effective policy on trading in Company securities, or (2) on a date when you are otherwise permitted to

sell shares of Common Stock on an established stock exchange or stock market (including but not limited to under a previously established written trading

plan  that  meets  the  requirements  of  Rule  10b5-1  under  the  Exchange  Act  and  was  entered  into  in  compliance  with  the  Company's  policies  (a  “10b5-1

Plan”)), and

satisfy the Withholding Taxes by withholding shares of Common Stock from the shares otherwise due,

2)        either  (1)  Withholding  Taxes  do  not  apply,  or  (2)  the  Company  decides,  prior  to  the  Original  Issuance  Date,  (A)  not  to

RESTRICTED STOCK UNIT FORM

on the Original Issuance Date, to you under this Award, and (B) not to permit you to then effect a sale on the market under a 10b5-1 Plan and (C) not to

permit you to pay your Withholding Taxes in cash,

then the shares that would otherwise be issued to you on the Original Issuance Date will not be delivered on such Original Issuance Date and will

instead be delivered on the first business day when you are not prohibited from selling shares of the Company’s Common Stock in the open public market,

but in no event later than December 31 of the calendar year in which the Original Issuance Date occurs (that is, the last day of your taxable year in which

the Original Issuance Date occurs), or, if and only if permitted in a manner that complies with Treasury Regulations Section 1.409A-1(b)(4), no later than

the date that is the 15th day of the third calendar month of the applicable year following the year in which the shares of Common Stock under this Award

are no longer subject to a “substantial risk of forfeiture” within the meaning of Treasury Regulations Section 1.409A-1(d).

c.    The form of delivery (e.g., a stock certificate or electronic entry evidencing such shares) shall be determined by the Company.

7.        DIVIDENDS.  You  shall  receive  no  benefit  or  adjustment  to  your  Award  with  respect  to  any  cash  dividend,  stock  dividend  or  other

distribution except as provided in the Plan with respect to a Capitalization Adjustment.

8.        RESTRICTIVE  LEGENDS.  The  shares  of  Common  Stock  issued  under  your  Award  shall  be  endorsed  with  appropriate  legends  as

determined by the Company.

9.    EXECUTION OF DOCUMENTS. You hereby acknowledge and agree that the manner selected by the Company by which you indicate

your consent to your Grant Notice is also deemed to be your execution of your Grant Notice and of this Agreement. You further agree that such manner of

indicating consent may be relied upon as your signature for establishing your execution of any documents to be executed in the future in connection with

your Award.

10.    AWARD NOT A SERVICE CONTRACT.

a.    Nothing in this Agreement (including, but not limited to, the vesting of your Award or the issuance of the shares in respect of your

Award), the Plan or any covenant of good faith and fair dealing that may be found implicit in this Agreement or the Plan shall: (i) confer upon you any right

to continue in the employ or service of, or affiliation with, the Company or an Affiliate; (ii) constitute any promise or commitment by the Company or an

Affiliate regarding the fact or nature of future positions, future work assignments, future compensation or any other term or condition of employment or

affiliation; (iii) confer any right or benefit under this Agreement or the Plan unless such right or benefit has specifically accrued under the terms of this

Agreement or Plan; or (iv) deprive the Company of the right to terminate you at will and without regard to any future vesting opportunity that you may

have.

b.    By accepting this Award, you acknowledge and agree that the right to continue vesting in the Award pursuant to the vesting schedule

provided in the Grant Notice may not be earned unless (in addition to any other conditions described in the Grant Notice and this Agreement) you continue

as an employee, director or consultant at the will of the Company and affiliate, as applicable (not through the act of being hired, being granted this Award

or any other award or

benefit) and that the Company has the right to reorganize, sell, spin-out or otherwise restructure one or more of its businesses or Affiliates at any

time  or  from  time  to  time,  as  it  deems  appropriate  (a  “reorganization”).  You  acknowledge  and  agree  that  such  a  reorganization  could  result  in  the

termination  of  your  Continuous  Service,  or  the  termination  of  Affiliate  status  of  your  employer  and  the  loss  of  benefits  available  to  you  under  this

Agreement,  including  but  not  limited  to,  the  termination  of  the  right  to  continue  vesting  in  the  Award.  You  further  acknowledge  and  agree  that  this

Agreement, the Plan, the transactions contemplated hereunder and the vesting schedule set forth herein or any covenant of good faith and fair dealing that

may be found implicit in any of them do not constitute an express or implied promise of continued engagement as an employee or consultant for the term of

this Agreement, for any period, or at all, and shall not interfere in any way with the Company’s right to terminate your Continuous Service at any time, with

RESTRICTED STOCK UNIT FORM

or without your cause or notice, or to conduct a reorganization.

11.    WITHHOLDING TAXES.

a.        On  each  vesting  date,  and  on  or  before  the  time  you  receive  a  distribution  of  the  shares  of  Common  Stock  in  respect  of  your

Restricted Stock Units, and at any other time as reasonably requested by the Company in accordance with applicable tax laws, you hereby authorize any

required withholding from the Common Stock issuable to you and/or otherwise agree to make adequate provision, including in cash, for any sums required

to satisfy the federal, state, local and foreign tax withholding obligations of the Company or any Affiliate that arise in connection with your Award (the

“Withholding Taxes”). Additionally, the Company or any Affiliate may, in its sole discretion, satisfy all or any portion of the Withholding Taxes obligation

relating to your Award by any of the following means or by a combination of such means (and by accepting this Award you hereby authorize any of the

following methods of satisfying the Withholding Taxes): (i) withholding from any compensation otherwise payable to you by the Company or an Affiliate;

(ii) causing you to tender a cash payment; (iii) permitting or requiring you to enter into a “same day sale” commitment, if applicable, with a broker-dealer

that is a member of the Financial Industry Regulatory Authority (a “FINRA Dealer”) whereby you irrevocably elect to sell a portion of the shares to be

delivered in connection with your Restricted Stock Units to satisfy the Withholding Taxes and whereby the FINRA Dealer irrevocably commits to forward

the proceeds necessary to satisfy the Withholding Taxes directly to the Company and/or its Affiliates; or (iv) withholding shares of Common Stock from

the shares of Common Stock issued or otherwise issuable to you in connection with the Award with a Fair Market Value (measured as of the date shares of

Common Stock are issued pursuant to Section 6) not in excess of the maximum amount of tax that may be required to be withheld by law (or such other

amount as may be permitted while sill avoiding classification of the Award as a liability for financial accounting purposes); and provided, further, that to

the extent necessary to qualify for an exemption from application of Section 16(b) of the Exchange Act, if applicable, such share withholding procedure

will be subject to the express prior approval of the Board or the Company’s Compensation Committee.

b.    Unless the Withholding Taxes are satisfied, the Company shall have no obligation to deliver to you any Common Stock or any other

consideration pursuant to this Award.

c.        In  the  event  the  Withholding  Taxes  arise  prior  to  the  delivery  to  you  of  Common  Stock  or  it  is  determined  after  the  delivery  of

Common Stock to you that the amount of the Withholding Taxes was greater than the amount withheld by the Company, you agree to indemnify and hold

the Company harmless from any failure by the Company to withhold the proper amount.

RESTRICTED STOCK UNIT FORM

12.    TAX CONSEQUENCES. The Company has no duty or obligation to minimize the tax consequences to you of this Award and shall not be

liable to you for any adverse tax consequences to you arising in connection with this Award. You are hereby advised to consult with your own personal tax,

financial and/or legal advisors regarding the tax consequences of this Award and by signing the Grant Notice, you have agreed that you have done so or

knowingly and voluntarily declined to do so. You understand that you (and not the Company) shall be responsible for your own tax liability that may arise

as a result of this investment or the transactions contemplated by this Agreement.

13.    LOCK-UP PERIOD. By accepting your Award, you agree that you will not sell, dispose of, transfer, make any short sale of, grant any

option for the purchase of, or enter into any hedging or similar transaction with the same economic effect as a sale, any Common Shares or other securities

of the Company held by you, for a period of one hundred eighty (180) days following the effective date of a registration statement of the Company filed

under the Securities Act or such longer period as the underwriters or the Company will request to facilitate compliance with FINRA Rule 2241, NYSE

Member Rule 472 or any successor or similar rules or regulation (the “Lock-Up Period”); provided, however, that nothing contained in this section will

prevent the exercise of a repurchase option, if any, in favor of the Company during the Lock-Up Period. You further agree to execute and deliver such other

agreements as may be reasonably requested by the Company or the underwriters that are consistent with the foregoing or that are necessary to give further

effect thereto. In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions with respect to your Common Shares until

the end of such period. You also agree that any transferee of any Common Shares (or other securities) of the Company held by you will be bound by this

Section 13. The underwriters of the Company’s shares are intended third party beneficiaries of this Section 13 and will have the right, power and authority

to enforce the provisions hereof as though they were a party hereto.

14.    UNSECURED OBLIGATION. Your Award is unfunded, and as a holder of a vested Award, you shall be considered an unsecured creditor

of the Company with respect to the Company’s obligation, if any, to issue shares or other property pursuant to this Agreement. You shall not have voting or

any other rights as a stockholder of the Company with respect to the shares to be issued pursuant to this Agreement until such shares are issued to you

pursuant  to  Section  6  of  this  Agreement.  Upon  such  issuance,  you  will  obtain  full  voting  and  other  rights  as  a  stockholder  of  the  Company.  Nothing

contained  in  this  Agreement,  and  no  action  taken  pursuant  to  its  provisions,  shall  create  or  be  construed  to  create  a  trust  of  any  kind  or  a  fiduciary

relationship between you and the Company or any other person.

15.    NOTICES. Any notice or request required or permitted hereunder shall be given in writing (including electronically) and will be deemed

effectively given upon receipt or, in the case of notices delivered by mail by the Company to you, five (5) days after deposit in the United States mail,

postage  prepaid,  addressed  to  you  at  the  last  address  you  provided  to  the  Company.  The  Company  may,  in  its  sole  discretion,  decide  to  deliver  any

documents related to participation in the Plan and this Award by electronic means or to request your consent to participate in the Plan by electronic means.

By  accepting  this  Award,  you  consent  to  receive  such  documents  by  electronic  delivery  and  to  participate  in  the  Plan  through  an  on-line  or  electronic

system established and maintained by the Company or another third party designated by the Company.

16.    HEADINGS. The headings of the Sections in this Agreement are inserted for convenience only and shall not be deemed to constitute a part

of this Agreement or to affect the meaning of this Agreement.

RESTRICTED STOCK UNIT FORM

17.    MISCELLANEOUS.

a.    The rights and obligations of the Company under your Award shall be transferable by the Company to any one or more persons or

entities, and all covenants and agreements hereunder shall inure to the benefit of, and be enforceable by, the Company’s successors and assigns.

b.       You  agree  upon  request  to  execute  any  further  documents  or  instruments  necessary  or  desirable  in  the  sole  determination  of  the

Company to carry out the purposes or intent of your Award.

c.       You  acknowledge  and  agree  that  you  have  reviewed  your  Award  in  its  entirety,  have  had  an  opportunity  to  obtain  the  advice  of

counsel prior to executing and accepting your Award and fully understand all provisions of your Award.

d.    This Agreement shall be subject to all applicable laws, rules, and regulations, and to such approvals by any governmental agencies or

national securities exchanges as may be required.

e.    All obligations of the Company under the Plan and this Agreement shall be binding on any successor to the Company, whether the

existence of such successor is the result of a direct or indirect purchase, merger, consolidation, or otherwise, of all or substantially all of the business and/or

assets of the Company.

18.    GOVERNING PLAN DOCUMENT. Your Award is subject to all the provisions of the Plan, the provisions of which are hereby made a

part  of  your  Award,  and  is  further  subject  to  all  interpretations,  amendments,  rules  and  regulations  which  may  from  time  to  time  be  promulgated  and

adopted pursuant to the Plan. Your Award (and any compensation paid or shares issued under your Award) is subject to recoupment in accordance with The

Dodd-Frank Wall Street Reform and Consumer Protection Act and any implementing regulations thereunder, any compensation recovery policy otherwise

required by applicable law and any recoupment or clawback policy adopted by the Company (whether or not required by applicable law). No recovery of

compensation  under  such  a  clawback  policy  will  be  an  event  giving  rise  to  a  right  to  voluntarily  terminate  employment  upon  a  resignation  for  “good

reason,” or for a “constructive termination” or any similar term under any plan of or agreement with the Company.

19.        EFFECT  ON  OTHER  EMPLOYEE  BENEFIT  PLANS.  The  value  of  the  Award  subject  to  this  Agreement  shall  not  be  included  as

compensation, earnings, salaries, or other similar terms used when calculating benefits under any employee benefit plan (other than the Plan) sponsored by

the Company or any Affiliate except as such plan otherwise expressly provides. The Company expressly reserves its rights to amend, modify, or terminate

any or all of the employee benefit plans of the Company or any Affiliate.

20.    SEVERABILITY. If all or any part of this Agreement or the Plan is declared by any court or governmental authority to be unlawful or

invalid, such unlawfulness or invalidity shall not invalidate any portion of this Agreement or the Plan not declared to be unlawful or invalid. Any Section of

this Agreement (or part of such a Section) so declared to be unlawful or invalid shall, if possible, be construed in a manner which will give effect to the

terms of such Section or part of a Section to the fullest extent possible while remaining lawful and valid.

RESTRICTED STOCK UNIT FORM

21.    OTHER DOCUMENTS. You hereby acknowledge receipt or the right to receive a document providing the information required by Rule

428(b)(1) promulgated under the Securities Act. In addition, you acknowledge receipt of the Company’s policy permitting certain individuals to sell shares

only during certain "window" periods and the Company's insider trading policy, in effect from time to time.

22.    AMENDMENT. This Agreement may not be modified, amended or terminated except by an instrument in writing, signed by you and by a

duly authorized representative of the Company. Notwithstanding the foregoing, this Agreement may be amended solely by the Board by a writing which

specifically states that it is amending this Agreement, so long as a copy of such amendment is delivered to you, and provided that, except as otherwise

expressly  provided  in  the  Plan,  no  such  amendment  materially  adversely  affecting  your  rights  hereunder  may  be  made  without  your  written  consent.

Without limiting the foregoing, the Board reserves the right to change, by written notice to you, the provisions of this Agreement in any way it may deem

necessary or advisable to carry out the purpose of the Award as a result of any change in applicable laws or regulations or any future law, regulation, ruling,

or  judicial  decision,  provided  that  any  such  change  shall  be  applicable  only  to  rights  relating  to  that  portion  of  the  Award  which  is  then  subject  to

restrictions as provided herein.

23.    SECTION 409A OF THE CODE. This Award is intended to be exempt from the application of Section 409A of the Code, including but

not  limited  to  by  reason  of  complying  with  the  “short-term  deferral”  rule  set  forth  in  Treasury  Regulation  Section  1.409A-1(b)(4)  and  any  ambiguities

herein shall be interpreted accordingly. Notwithstanding the foregoing, if it is determined that the Award fails to satisfy the requirements of the short-term

deferral rule and is otherwise not exempt from, and determined to be deferred compensation subject to Section 409A of the Code, this Award shall comply

with Section 409A to the extent necessary to avoid adverse personal tax consequences and any ambiguities herein shall be interpreted accordingly. If it is

determined that the Award is deferred compensation subject to Section 409A and you are a “Specified Employee” (within the meaning set forth in Section

409A(a)(2)(B)(i)  of  the  Code)  as  of  the  date  of  your  “Separation  from  Service”  (within  the  meaning  of  Treasury  Regulation  Section  1.409A-1(h)  and

without regard to any alternative definition thereunder), then the issuance of any shares that would otherwise be made upon the date of your Separation

from Service or within the first six (6) months thereafter will not be made on the originally scheduled date(s) and will instead be issued in a lump sum on

the date that is six (6) months and one day after the date of the Separation from Service, with the balance of the shares issued thereafter in accordance with

the original vesting and issuance schedule set forth above, but if and only if such delay in the issuance of the shares is necessary to avoid the imposition of

adverse taxation on you in respect of the shares under Section 409A of the Code. Each installment of shares that vests is intended to constitute a “separate

payment” for purposes of Treasury Regulation Section 1.409A-2(b)(2).

* * * * *

    This Restricted Stock Unit Award Agreement shall be deemed to be signed by the Company and the Participant upon the signing by the Participant of the

Restricted Stock Unit Grant Notice to which it is attached.

RESTRICTED STOCK UNIT FORM

ATTACHMENT

2019 EQUITY INCENTIVE PLAN

Subsidiaries of Bellicum Pharmaceuticals, Inc.
as of December 31, 2020

Bellicum Pharma Limited, a private limited company organized under the laws of the United Kingdom

Bellicum Pharma GmbH, a private limited liability company organized under the laws of Germany

Exhibit 21.1

Consent of Independent Registered Public Accounting Firm

Exhibit 23.1

We consent to the incorporation by reference in the following Registration Statements:

(1) Registration Statements (Form S-3 Nos. 333-219020, 333-226652, and 333-232771) of Bellicum Pharmaceuticals, Inc., and

(2) Registration Statements (Form S-8 Nos. 333-201036, 333-216656, 333-218772, 333-220170, 333-223636, 333-225554, 333-
231272, 333-232304, 333-232774, 333-236149, and 333-241675) pertaining to the 2006 Stock Option Plan, 2011 Stock
Option Plan, 2014 Equity Incentive Plan, as amended, 2014 Employee Stock Purchase Plan, Bellicum Pharmaceuticals, Inc.
2019 Equity Incentive Plan, and 2019 Equity Incentive Plan of Bellicum Pharmaceuticals, Inc.

of our report dated March 30, 2021, with respect to the consolidated financial statements of Bellicum Pharmaceuticals, Inc.
included in this Annual Report (Form 10-K) of Bellicum Pharmaceuticals, Inc. for the year ended December 31, 2020.

/s/ Ernst & Young LLP

Houston, Texas
March 30, 2021

Exhibit 31

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL OFFICER
PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE SECURITIES EXCHANGE ACT, AS ADOPTED PURSUANT TO SECTION 302 OF THE
SARBANES-OXLEY ACT OF 2002

I, Richard A. Fair, certify that:

1. I have reviewed this Annual Report on Form 10-K of Bellicum Pharmaceuticals, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the

statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the

financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. I am responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e))

and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision,

to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities,
particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our

supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes
in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the

effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most

recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially
affect, the registrant’s internal control over financial reporting; and

5. I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit

committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are

reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal

control over financial reporting.

Date: March 30, 2021

/s/Richard A. Fair
Richard A. Fair
President and Chief Executive Officer
(Principal Executive Officer and Principal Financial Officer)

 
 
 
 
CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32

I, Richard A. Fair, principal executive officer and principal officer of Bellicum Pharmaceuticals, Inc. (the “Registrant”), do hereby certify in accordance
with 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, based upon my knowledge:

(1) this Annual Report on Form 10-K for the fiscal year ended December 31, 2020 of the Registrant, to which this certification is attached as an

exhibit (the “Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m(a));
and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date: March 30, 2021

/s/ Richard A. Fair
Richard A. Fair
President and Chief Executive Officer

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 Company 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.