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Jounce Therapeutics

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FY2021 Annual Report · Jounce Therapeutics
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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, 2021
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 001-37998
________________________________________________________________________________________________________

JOUNCE THERAPEUTICS, INC.
(Exact name of registrant as specified in its charter)
________________________________________________________________________________________________________

  Delaware

(State or other jurisdiction of
incorporation or organization)

780 Memorial Drive

Cambridge,

Massachusetts

(Address of principal executive offices)

45-4870634

(I.R.S. Employer
Identification No.)

02139

(Zip Code)

Registrant’s telephone number, including area code: (857) 259‑3840

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

Title of each class

Common Stock, $0.001 par value per share

Trading Symbol(s)

JNCE

Name of each exchange on which registered

Nasdaq Global Select 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 x

    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 x

    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 x  No ☐ 

    Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S‑T (§ 232.405 of this chapter) during the preceding
12 months (or for such shorter period that the registrant was required to submit such files). Yes x  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 ☒

    As of June 30, 2021, the last business day of the registrant’s most recently completed second fiscal quarter, the aggregate market value of the registrant’s Common Stock held by non-affiliates of the registrant was
approximately $210,613,231, based upon the closing price of the registrant’s Common Stock on June 30, 2021.
    As of February 28, 2022, there were 51,664,688 shares of common stock, $0.001 par value per share, outstanding.

    Portions of the registrant’s Definitive Proxy Statement on Schedule 14A relating to its 2022 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent
stated herein.

Documents Incorporated by Reference

 
 
 
    
    
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.
Item 9C.

PART III

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

PART IV

Item 15.
Item 16.

EXHIBIT INDEX
SIGNATURES

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
[Reserved]
Management’s Discussion and Analysis of Financial Condition and Results of Operations
Quantitative and Qualitative Disclosures above Market Risk
Financial Statements and Supplementary Data
Change in and Disagreements with Accountants on Accounting and Financial Disclosure
Controls and Procedures
Other Information
Disclosure Regarding Foreign Jurisdictions that Prevent Inspection

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 and Financial Statement Schedules
Form 10-K Summary

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References to Jounce

Throughout  this  Annual  Report  on  Form  10-K,  the  “Company,”  “Jounce,”  “Jounce  Therapeutics,”  “we,”  “us,”  and  “our,”  except  where  the  context  requires
otherwise, refers to Jounce Therapeutics, Inc. and its consolidated subsidiary, and “our board of directors” refers to the board of directors of Jounce Therapeutics,
Inc.

Cautionary Note Regarding Forward-Looking Statements and Industry Data

This Annual Report on Form 10-K contains forward-looking statements that involve substantial risks and uncertainties. All statements other than statements of
historical  facts  contained  in  this  Annual  Report  on  Form  10-K,  including  statements  regarding  our  strategy,  future  operations,  future  financial  position,  future
revenue,  projected  costs,  prospects,  plans,  objectives  of  management  and  expected  market  growth,  are  forward-looking  statements.  These  statements  involve
known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from
any future results, performance or achievements expressed or implied by the forward-looking statements.

The words “aim,” “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “goal,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “target,”
“will” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words.
These forward-looking statements include, among other things, statements about:

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the timing, progress, and results of preclinical studies and clinical trials for our current and future product candidates, including statements regarding the
timing of initiation and completion of studies or trials and related preparatory work, the period during which the results of the trials will become available,
and our research and development programs;

our plans and expectations in light of the COVID-19 pandemic and its impacts on our operations and global healthcare systems;

the  timing,  scope,  or  likelihood  of  regulatory  filings  and  approvals,  including,  as  applicable,  timing  of  our  investigational  new  drug  applications  for,
biologics license application filing for, and final Food and Drug Administration approval of our current and future product candidates;

our  ability  to  use  our  Translational  Science  Platform  to  identify  targets  for  future  product  candidates  and  to  match  immunotherapies  to  select  patient
subsets;

our ability to identify, develop and advance future product candidates into, and successfully complete, clinical studies;

our ability to develop combination therapies, whether on our own or in collaboration with third parties, for our current and future product candidates;

our expectations regarding the size of the patient populations for our product candidates, if approved for commercial use, and any product candidates we
may develop;

our commercialization and marketing capabilities and strategy;

the pricing and reimbursement of our current and future product candidates, if approved;

the implementation of our business model and our strategic plans for our business, our current and future product candidates, and our technology;

our ability to develop and commercialize a companion diagnostic or complementary diagnostic for our current and future product candidates;

the rate and degree of market acceptance and clinical utility of our current and future product candidates;

the potential benefits of our exclusive license of GS-1811, formerly JTX-1811, to Gilead Sciences, Inc.;

our ability to establish or maintain future collaborations or strategic relationships or obtain additional funding;

our ability to retain the continued service of our key professionals and to identify, hire and retain additional qualified professionals;

our  intellectual  property  position,  including  the  scope  of  protection  we  are  able  to  establish  and  maintain  for  intellectual  property  rights  covering  our
current and future product candidates, and our ability not to infringe, misappropriate or otherwise violate any third-party intellectual property rights;

our competitive position, and developments and projections relating to our competitors and our industry;

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

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the impact of laws and regulations.

There are a number of important risks and uncertainties that could cause our actual results to differ materially from those indicated by forward-looking statements.
We may not actually achieve the plans, intentions or expectations disclosed in our forward-looking statements, and you should not place undue reliance on our
forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements
we make. We have included important factors in the cautionary statements included in this Annual Report on Form 10-K, particularly in the section entitled “Risk
Factors” in Part I, Item 1A that could cause actual results or events to differ materially from the forward-looking statements that we make. Our forward-looking
statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures or investments that we may make.

You should read this Annual Report on Form 10-K and the documents that we have filed as exhibits to this Annual Report on Form 10-K completely and with the
understanding that our actual future results may be materially different from what we expect. The forward-looking statements contained in this Annual Report on
Form 10-K are made as of the date of this Annual Report on Form 10-K, and we do not assume any obligation to update any forward-looking statements, whether
as a result of new information, future events or otherwise, except as required by applicable law.

This Annual Report on Form 10-K may include industry and market data, which we may obtain from our own internal estimates and research, as well as from
industry and general publications and research, surveys, and studies conducted by third parties. Industry publications, studies, and surveys generally state that they
have been obtained from sources believed to be reliable, although they do not guarantee the accuracy or completeness of such information. While we believe that
such studies and publications are reliable, we have not independently verified market and industry data from third‑party sources.

Summary of Risk Factors

Below is a summary of the principal risk factors that make an investment in our common stock speculative or risky. This summary does not address all of the risks
that we face. Additional discussion of the risks summarized in this risk factor summary, and other risks that we face, can be found below under the heading “Risk
Factors” and should be carefully considered, together with other information in this Form 10-K and our other filings with the SEC, before making an investment
decision regarding our common stock.

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We  are  early  in  our  development  efforts.  If  we  are  unable  to  advance  our  product  candidates  through  clinical  development,  advance  future  product
candidates to clinical development or obtain marketing approval and ultimately commercialize any product candidates, our business will be materially
harmed.

The ongoing COVID-19 pandemic has adversely affected, and may continue to adversely affect, our business, including our clinical trials, supply chain
and preclinical studies.

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

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

Because  we  rely  on  third-party  manufacturing  and  supply  partners,  our  supply  of  research  and  development,  preclinical  and  clinical  development
materials may become limited or interrupted or may not be of satisfactory quantity or quality.

We rely and expect to continue to rely on third parties to conduct our clinical trials. If these third parties do not successfully carry out their contractual
duties, comply with regulatory requirements or meet expected deadlines, our business could be substantially harmed.

We currently face and will face significant competition. If our competitors develop and market products that are more effective, safer or less expensive
than any of our product candidates, our commercial opportunities will be negatively impacted.

We rely on our Translational Science Platform to identify and develop product candidates. Our competitive position could be materially harmed if our
competitors develop a platform similar to our Translational Science Platform and develop rival product candidates.

We  will  depend  on  Gilead  to  develop,  manufacture  and  commercialize  GS-1811  and  may  depend  on  additional  third  parties  for  the  development  and
commercialization of other product candidates.

We  may  develop  companion  diagnostics  and/or  complementary  diagnostics  for  our  product  candidates.  If  we  are  unable  to  successfully  develop  such
companion diagnostics or complementary diagnostics, or experience significant delays in doing so, we may not realize the full commercial potential of
our current or future product candidates.

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We have accumulated significant losses since our inception and anticipate that we will continue to incur substantial net losses in the foreseeable future.

We will require substantial additional financing to achieve our goals, and a failure to obtain this necessary capital when needed could force us to delay,
limit, reduce or terminate our product development or commercialization efforts.

If  we  are  unable  to  obtain,  maintain  and  protect  our  intellectual  property  rights  for  our  product  candidates  or  if  our  intellectual  property  rights  are
inadequate, our competitive position could be harmed.

If we are unable to protect the confidentiality of our proprietary information and know-how, the value of our technology and products could be adversely
affected.

We are highly dependent on our key personnel, and if we are not successful in attracting, motivating and retaining highly qualified personnel, we may not
be able to successfully implement our business strategy.

The price of our common stock may be volatile and fluctuate substantially, which could result in substantial losses for purchasers of our common stock.

Website and Social Media Disclosure

From  time  to  time,  we  may  use  our  website  (www.jouncetx.com),  investor  and  media  relations  website  (http://ir.jouncetx.com),  Facebook  page
(https://www.facebook.com/jouncetx), LinkedIn page (https://www.linkedin.com/company/3494537/) and Twitter feed (https://twitter.com/JounceTx) as channels
for  the  distribution  of  information.  The  information  we  post  through  these  channels  may  be  deemed  material.  Accordingly,  investors  should  monitor  these
channels, in addition to following our press releases, Securities and Exchange Commission filings and public conference calls and webcasts. The contents of our
website and social media channels are not, however, a part of this report.

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Item 1. Business

Overview

PART I

We  are  a  clinical-stage  immunotherapy  company  dedicated  to  transforming  the  treatment  of  cancer  by  developing  therapies  that  enable  the  immune  system  to
attack tumors and provide long-lasting benefits to patients. Our strategy is to use a biomarker-driven approach from discovery through clinical development. We
have developed a suite of integrated technologies that comprise our Translational Science Platform, enabling us to comprehensively interrogate the cellular and
molecular composition of tumors. By focusing on specific cell types, both immune and non-immune, within tumors, we can prioritize targets and then identify
related biomarkers designed to match the right therapy to the right patient. Our pipeline is focused on product candidates to address PD-(L)1-inhibitor resistant and
PD-(L)1 inhibitor sensitive tumors, which represent significant opportunities requiring different biological approaches. We aim to develop product candidates that
address the unmet medical need of patients in both of these populations.

Our highest priority program, JTX-8064, is being developed for patients with either PD-(L)1-inhibitor resistant or PD-(L)1 inhibitor sensitive tumors. JTX-8064 is
the first tumor-associated macrophage candidate to emerge from our Translational Science Platform. JTX-8064 is a monoclonal antibody that binds to Leukocyte
Immunoglobulin Like Receptor B2, or LILRB2 (also known as ILT4), which is a cell surface receptor expressed on macrophages and other myeloid cells. Our
INNATE clinical trial is a Phase 1/2 clinical trial of JTX-8064 as a monotherapy and in combination with our PD-1 inhibitor, pimivalimab, in patients with solid
tumors. In January 2021, we began enrollment in the dose-escalation portion of the INNATE trial and enrollment was completed in July and October 2021 for
monotherapy and combination therapy, respectively. JTX-8064 has been well-tolerated to date with no observed dose limiting toxicities. We selected 700 mg as
our recommended phase 2 dose for further evaluation. We initiated enrollment in August 2021 and October 2021 in the phase 2 monotherapy and combination
therapy portions, respectively. The INNATE trial is comprised of one monotherapy and seven combination indication-specific expansion cohorts and is designed to
demonstrate proof-of-concept. Once proof-of-concept is established, we plan to move JTX-8064 rapidly into registrational trials on a cohort by cohort basis.

The  expansion  cohorts  are  studying  tumor  types  in  three  groups  of  patients:  (i)  PD-(L)1  inhibitor  experienced  patients  whose  tumors  progressed  on  or  after
treatment with a PD-(L)1 inhibitor (including, non-small cell lung cancer, or NSCLC), (ii) PD-(L)1 inhibitor naïve patients whose tumors are historically resistant
to  PD-(L)1  inhibitors  (including,  ovarian  cancer),  and  (iii)  PD-(L)1  inhibitor  naïve  patients  whose  tumors  are  historically  more  sensitive  to  PD-(L)1  inhibitors
(including, front line PD-L1 positive head and neck squamous cell carcinoma). Proof-of concept expansion cohorts have the potential to enroll up to 29 patients
per combination therapy cohort and 47 patients in the monotherapy cohort if pre-specified criteria are met. We expect to report preliminary clinical and biomarker
data from INNATE in 2022.

Vopratelimab is a clinical-stage monoclonal antibody that binds to and activates the Inducible T cell CO-Stimulator, or ICOS, a protein on the surface of certain T
cells  commonly  found  in  many  solid  tumors.  We  are  currently  enrolling  patients  in  the  SELECT  trial,  a  randomized  phase  2  proof-of-concept  trial  outside  the
United States evaluating vopratelimab in combination with pimivalimab compared to pimivalimab alone in biomarker-selected, immunotherapy-naive second-line
vopra
NSCLC patients. We identify patients for SELECT using TIS
has been optimized to predict for emergence of ICOS hi CD4 T cells in the peripheral blood, which have been associated with clinical benefit in patients treated
with vopratelimab alone or in combination with nivolumab. We expect to report complete clinical data from SELECT in the second half of 2022.

, an 18 gene signature that includes genes relevant to both CD8 and CD4 T cell biology. TIS

vopra

Pimivalimab is a clinical-stage anti-PD-1 monoclonal antibody that we are developing primarily for potential use in combination with our product candidates, as
we  believe  that  combination  therapy  has  the  potential  to  be  a  mainstay  of  cancer  immunotherapy.  We  presented  safety  and  preliminary  efficacy  data  from  our
monotherapy Phase 1 clinical trial of pimivalimab in 2019. Based on the results of that clinical trial, we are using pimivalimab in combination with JTX-8064 in
INNATE and with vopratelimab in SELECT.

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GS-1811, formerly JTX-1811, is the fourth internally developed program to enter the clinic. In August 2020, we entered into an agreement to exclusively license
GS-1811  to  Gilead  Sciences,  Inc.,  or  Gilead.  GS-1811  is  a  monoclonal  antibody  that  is  designed  to  selectively  deplete  T  regulatory  cells  in  the  tumor
microenvironment, or TME, by targeting a receptor called CCR8, which is preferentially expressed on intra-tumoral T regulatory cells. Pursuant to our exclusive
license agreement with Gilead, or the Gilead License Agreement, we granted Gilead a worldwide license to develop, manufacture and commercialize GS-1811 and
certain derivatives thereof, as well as backup antibodies defined within the agreement. Under the terms of the Gilead License Agreement, we advanced GS-1811
through the clearance of an investigational new drug application, or IND, in June 2021, which triggered a $25.0 million milestone payment in July 2021, and have
transitioned the program to Gilead. Gilead initiated clinical trials of GS-1811 in August 2021. We are entitled to receive additional payments from Gilead upon the
achievement  of  specified  clinical,  regulatory  and  sales  milestones.  We  are  also  eligible  to  receive  tiered  royalty  payments  based  on  a  percentage  of  annual
worldwide  net  sales  ranging  from  the  high-single  digits  to  mid-teens,  based  on  future  annual  net  sales  of  licensed  products,  on  a  licensed  product-by-licensed
product and country-by-country basis.

JTX-1484 is the most recent product candidate to emerge from our Translational Science Platform. JTX-1484 is a monoclonal antibody designed to block human
Leukocyte Immunoglobulin Like Receptor B4, or LILRB4, on various myeloid cells which we believe may lead to reduced immune suppression and enhancement
of T cell functionality. We are currently conducting IND-enabling activities for JTX-1484, with the goal of filing an IND in 2023.

With our biomarker-driven approach, we leverage our Translational Science Platform to interrogate cell types within the human TME and to identify and prioritize
targets across a broad spectrum of immune and non-immune cell types. In addition, early in the development process, we use our Translational Science Platform to
identify  potential  predictive  biomarkers  to  enable  us  to  enrich  our  clinical  trials  for  patient  populations  that  may  be  more  likely  to  respond  to  a  particular
immunotherapy. Once clinical data is available for a product candidate, we then use a reverse translational approach to interrogate tumor and blood samples from
patients with known outcomes. By using these reverse translational findings, we believe we are better able to design clinical trials and more efficiently develop
cancer immunotherapies that potentially provide greater benefit to patients. These biomarker results, coordinated to clinical response, will assist with determining
the benefit of proceeding to the use of a companion diagnostic and/or complementary diagnostic for a given therapy.

Our Strategy

We  aim  to  build  a  multi-product  company  that  discovers,  develops  and  commercializes  first-in-class  and/or  best  in  class  novel  therapeutics  and  combination
approaches  for  patients  who  are  less  likely  to  respond,  or  who  have  experienced  limited  or  no  response,  to  currently-approved  therapies.  Key  elements  of  our
strategy include:

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Aggressively  develop  our  product  candidates,  and  potential  future  product  candidates,  using  a  biomarker-driven  approach  and  reverse  translational
analysis aimed at bringing the right immunotherapy to the right patients;

Continue  investment  in  our  Translational  Science  Platform  to  enhance  our  understanding  of  the  TME,  as  we  look  to  broaden  the  benefit  of
immunotherapy through targeting additional cell types;

Address the unmet need of cancer patients with tumors unresponsive to T effector cell-directed therapies by focusing our discovery efforts on other cell
types within the TME; and

Expand our pipeline by leveraging our internal discovery platform and/or in-licensing new technologies, product candidates and methodologies.

Immuno-Oncology Overview

The  development  of  immune  checkpoint  inhibitors  introduced  a  shift  in  potential  cancer  treatments,  given  that  earlier  treatments  historically  focused  on  either
killing or arresting the proliferation of the tumor cells themselves. PD-1 and PD-L1 checkpoint inhibitors bind to the PD-1 or PD-L1 receptor on certain T cells
and tumor cells, and are approved in multiple cancer types and across different lines of therapy. Even with the success of these antibodies that bind to PD-1 or PD-
L1, known as PD-(L)1 inhibitors, there is still a significant unmet medical need for patients who fail to respond to or respond and later relapse on these therapies.
We  believe  that  an  important  approach  to  meeting  this  unmet  need  to  is  target  additional  types  of  immunosuppressive  immune  cells  in  the  tumor
microenvironment.

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The interplay between the immune system and cancer is dynamic. As more patients in an expanded set of indications are being exposed to cancer immunotherapies
we  are  learning  about  the  factors  that  may  contribute  to  a  lack  of  response  or  a  failed  response.  Biological  approaches—beyond  those  focused  on  CD8  T  cell
biology—may  be  needed  to  address  the  unmet  medical  need  of  cancer  patients  who  do  respond  to  and  relapse  after  receiving  PD-(L)1  inhibitors.  Reasons  for
resistance  to  immunotherapy  may  include  a  lack  of  appropriate  immune  cells  in  the  TME,  such  as  the  absence  of  T  effector  cells,  or  the  presence  of
immunosuppressive cells, such as T regulatory cells or tumor associated macrophages. Additionally, a tumor may initially respond to a PD-(L)1 inhibitor, but other
immune  checkpoints  may  emerge  or  an  acquired  resistance  to  the  particular  immunotherapy  may  occur,  for  example  through  genetic  alterations  in  key  T  cell
signaling pathways. In these cases, therapeutic approaches that utilize new mechanisms and target cell types other than T effector cells within the TME may restore
or broaden the applicability of cancer immunotherapies. We believe LILRB2 may function as an immune checkpoint for macrophages, and its activation, through
ligand binding, may suppress anti-tumor immune responses. We believe that by inhibiting LILRB2’s interaction with its ligands, our lead macrophage program,
JTX-8064,  may  have  the  potential  to  restore  the  activity  of  PD-(L)1  inhibitors  in  otherwise  resistant  settings.  For  patients  who  have  benefited  from  cancer
immunotherapies,  data  emerging  from  clinical  studies  with  PD-(L)1  inhibitors  suggests  the  importance  of  a  biomarker-driven  patient-enrichment  strategy.
Additional  highlights  of  the  evolving  immunotherapy  landscape  include  longer-lasting  responses  as  compared  to  chemotherapy  and  that  these  longer-lasting
responses can be improved with combination therapy.

Our Translational Science Platform enables both the identification and prioritization of targets across a broad spectrum of immune and non-immune cell types and
the identification of potential biomarkers to inform our clinical development strategy. We believe this platform may position us to address multiple pathways and
indications,  including  those  that  may  be  important  in  colder  tumors  that  are  unlikely  to  respond  to  current  therapies,  and  to  identify  the  most  appropriate
indications and most responsive patient populations for our new immunotherapies. By taking this dual approach, we believe we may be able to address areas of
unmet need, particularly in the combination setting.

The promise of long-lasting benefit to cancer patients has led to heightened enthusiasm for these types of immunotherapy products and the rapid expansion of the
market opportunity. The current market for immunotherapies is estimated to be $37 billion, and the overall market for immunotherapy is expected to expand over
the next five years, with a 2027 market size estimated to be $76 billion across solid and blood-based tumors according to market reports.

Our Product Pipeline

We are developing a pipeline of immunotherapies that we believe will provide a meaningful and long-lasting benefit to cancer patients. We plan to develop each of
these as a single agent and/or in combination with other therapies, as applicable. The following table depicts our current pipeline:

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Development Programs

JTX-8064: An Anti-LILRB2 (ILT4) Antibody Designed to Reprogram Macrophages

JTX-8064 is a humanized IgG4, anti-LILRB2 monoclonal antibody designed to reprogram macrophages. Specifically, it binds to Leukocyte Immunoglobulin Like
Receptor B2 (LILRB2/ILT4) and block interactions with its ligands. We are currently assessing JTX-8064 in INNATE, a Phase 1/2 clinical study of JTX-8064 as a
monotherapy and in combination with pimivalimab. We began enrolling patients in INNATE in January 2021, and continue enrollment in eight indication-specific
expansion cohorts, which are designed to demonstrate proof-of-concept. INNATE will assess pharmacodynamic and potential predictive biomarkers with the aim
of informing the future clinical development of JTX-8064. We expect to report preliminary clinical and biomarker data from INNATE in 2022.

JTX-8064  is  the  first  tumor-associated  macrophage  candidate  developed  from  our  Translational  Science  Platform.  When  LILRB2  binds  to  human  leukocyte
antigen, or HLA, molecules, including HLA-G, on cancer cells and macrophages, it induces an immunosuppressive state in the macrophages. In preclinical studies,
JTX-8064  inhibited  this  immunosuppressive  interaction,  reprogramming  the  macrophages  to  a  more  immuno-stimulatory  state  resulting  in  activation  and
proliferation  of  T  cells.  We  believe  therapies  targeting  these  innate  immune  cells  may  have  the  potential  to  benefit  patients  with  tumors  that  are  less  likely  to
respond to existing T cell-focused approaches.

Vopratelimab: An Anti-ICOS Antibody Immunotherapy

Vopratelimab is a clinical-stage monoclonal antibody that binds to and activates ICOS, a protein on the surface of certain T cells. We believe that vopratelimab’s
mechanism of action engages CD4 T cells and enables a different element of the immune response than PD-(L)1 inhibitors, which act primarily on CD8 T cells.
The design of our ongoing Phase 2 SELECT clinical trial was informed by data suggesting that high expression of ICOS per T cell is necessary for vopratelimab to
vopra
drive  the  activation  of  T  effector  cells.  SELECT  aims  to  determine  whether  vopratelimab  can  enhance  the  therapeutic  benefit  of  PD-(L)1  inhibitors  in  TIS
biomarker-selected patients.

vopra

We initiated SELECT in October 2020 to assess vopratelimab in combination with pimivalimab compared to pimivalimab alone. SELECT is a randomized trial
 biomarker is a baseline tumor RNA
 biomarker-selected, immunotherapy-naive second-line NSCLC patients. The TIS
outside the United States with TIS
signature with a threshold optimized for the emergence of peripheral ICOS hi CD4 T cells, a vopratelimab pharmacodynamic biomarker associated with clinical
benefit and not associated with PD-(L)1 inhibitor therapy. We identified TIS
 through a reverse translational analysis of tumor biopsies in a subset of patients in
our ICONIC Phase 1/2 clinical trial, in whom CD4 T cell populations were analyzed for ICOS levels. This indicated an association between the emergence of
was applied retrospectively to clinical outcomes, it also appeared predictive of improved response rate,
ICOS hi CD4 T cells in blood and TIS
vopra
 has the potential to identify patients who may be
six- and nine-month progression free survival and overall survival. We believe selecting patients by using TIS
more responsive to vopratelimab, and those who may be more responsive to pimivalimab. Although both trial arms may benefit from TIS
 patient selection, the
SELECT trial is powered to demonstrate the statistical superiority of vopratelimab in combination with pimivalimab compared to pimivalimab alone. We expect to
report complete clinical data from SELECT in the second half of 2022.

. When TIS

vopra 

vopra

vopra

vopra

vopra

We also assessed vopratelimab in two Phase 2 trials, EMERGE and ICONIC. Although neither EMERGE nor ICONIC met pre-specified criteria for continuation
of enrollment in the patient populations studied, this clinical data informed the biomarker approach we are using in SELECT. Vopratelimab demonstrated an
acceptable safety profile in these trials, with no discernible increase in number or severity of adverse events over what would be expected with a PD-(L)1 or
CTLA-4 inhibitor alone.

Pimivalimab: An Anti-PD-1 Antibody for Combination Therapy

Combination therapy aimed at multiple targets has become an important element of immunotherapy development efforts with the goal of creating improved, long-
lasting responses. PD-(L)1 inhibitors are anticipated to play a key role in combination therapies. For this reason, we are developing our own anti-PD-1 monoclonal
antibody, pimivalimab, primarily for use in combination with future product candidates. We believe this will give us greater flexibility to develop our pipeline of
therapies. Pimivalimab is currently being used in combination with vopratelimab in SELECT and JTX-8064 in INNATE.

In  November  2019,  we  reported  safety  and  preliminary  efficacy  data  from  our  Phase  1  clinical  trial  of  pimivalimab.  Pimivalimab  demonstrated  an  acceptable
safety profile based on a 6-cohort dose-escalation trial. Response Evaluation Criteria in Solid Tumors, or RECIST, responses were observed in three of 18 patients,
including one complete response and two partial responses.

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JTX-1484: An Anti-LILRB4 Antibody Designed to Reduce Immune Suppression

JTX-1484 is the most recent product candidate to emerge from our Translational Science Platform. JTX-1484 is a monoclonal antibody designed to block human
LILRB4  on  various  myeloid  cells  which  we  believe  may  lead  to  reduced  immune  suppression  and  enhancement  of  T  cell  functionality.  We  are  currently
conducting IND-enabling activities for JTX-1484, with the goal of filing an IND in 2023.

Discovery Programs

With  our  focus  on  bringing  the  right  immunotherapy  to  the  right  patients,  we  continue  to  invest  in  our  Translational  Science  Platform  as  we  believe  that  the
systematic interrogation of the immune make-up of human tumors gives us the ability to target different cell types within the TME beyond the T effector cells that
are  the  focus  of  currently-approved  therapies.  We  can  also  use  our  Translational  Science  Platform  and  biomarker  efforts  to  inform  our  clinical  strategy  by
identifying specific patient populations within or across different types of cancer. This may enable us to fully exploit the promise of immunotherapy in cancer by
allowing us to pursue tumor types not currently served by therapies that target the T effector arm of the adaptive immune system, as well as potentially convert the
TME from an immunosuppressive environment to an immune activating environment and tailor our approach to both PD-(L)1-inhibitor resistant and PD-(L)1-
inhibitor sensitive tumors.

We  conducted  analysis  of  The  Cancer  Genome  Atlas  as  well  as  other  public  and  proprietary  databases  using  our  internally  generated  gene  signatures,  which
represent various immune cells. The immune cell composition of tumors is diverse, both across and within indications. This analysis suggests that a significant
number of tumors, including cold tumors in particular, may not benefit from the current T cell focused immunotherapies, such as PD-(L)1 inhibitors.

We are leveraging our Translational Science Platform to systematically and comprehensively interrogate cell types within the TME with the goal of enabling us to
develop therapies for patients who have yet to benefit from immunotherapies. We aim to identify targets tied to cell types of interest, including myeloid cells such
as macrophages, T regulatory cells and non-immune cells, and design mono- and bi-specific therapies using these targets.

Gilead License Agreement

On August 31, 2020, we entered into an exclusive license agreement with Gilead, or the Gilead License Agreement, granting Gilead a worldwide and exclusive
license  to  develop,  manufacture  and  commercialize  GS-1811  and  certain  derivatives  thereof,  as  well  as  backup  antibodies  defined  within  the  agreement.
Concurrently  with  the  license  agreement,  we  entered  into  a  stock  purchase  agreement  with  Gilead,  or  the  Stock  Purchase  Agreement,  and  a  registration  rights
agreement. The agreements with Gilead were subject to review under the Hart-Scott Rodino Antitrust Improvements Act of 1976 and other customary closing
conditions, and became effective on October 16, 2020, the closing date of the transaction.

Under the terms of the Gilead License Agreement and Stock Purchase Agreement, respectively, Gilead paid us a one-time, non-refundable upfront payment of
$85.0 million and a payment of $35.0 million for an equity investment. Gilead has the sole right to develop and commercialize GS-1811. We are entitled to receive
payments  from  Gilead  upon  the  achievement  of  specified  clinical,  regulatory  and  sales  milestones,  including  potential  clinical  development  and  regulatory
milestone payments up to an aggregate total of $510.0 million and potential sales milestone payments up to an aggregate total of $175.0 million. In July 2021, we
received a $25.0 million milestone payment upon IND clearance for GS-1811. We are also eligible to receive tiered royalty payments based on a percentage of
annual  worldwide  net  sales  ranging  from  the  high-single  digits  to  mid-teens,  based  on  future  annual  net  sales  of  licensed  products,  on  a  licensed  product-by-
licensed product and country-by-country basis.

Unless terminated earlier in accordance with its terms, the Gilead License Agreement provides that it will expire (i) on a licensed product-by-licensed product and
country-by-country basis on the date of the expiration of the royalty term with respect to such licensed product in such country and (ii) in its entirety upon the
expiration of all applicable royalty terms with respect to the licensed products in all countries, following which the applicable licenses under the Gilead License
Agreement will become fully paid-up, perpetual, irrevocable and royalty-free. Gilead may terminate the Gilead License Agreement for convenience, in its sole
discretion, in its entirety or on a product-by-product or region-by-region basis, at any time with prior written notice to us.

Manufacturing

We rely on and will continue to rely on our contract manufacturing organizations, or CMOs, for both drug substance and drug product. While we do not plan to
develop our own full-scale manufacturing capabilities, we may consider establishing a small, flexible approach for supporting preclinical IND-enabling studies and
early clinical trials. As of now, all of our manufacturing is outsourced to well-established third-party manufacturers. We have entered into long-term contracts with
CMOs for drug supply of JTX-8064, vopratelimab and pimivalimab.

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Competition

The biotechnology and pharmaceutical industries, and the immunotherapy subsector, are characterized by rapid evolution of technologies, fierce competition and
strong  defense  of  intellectual  property.  While  we  believe  that  our  product  candidates,  discovery  programs,  technology,  knowledge,  experience,  and  scientific
resources provide us with competitive advantages, we currently face and will face competition from major pharmaceutical and biotechnology companies, academic
institutions, governmental agencies and public and private research institutions, among others.

Any  product  candidates  that  we  successfully  develop  and  commercialize  will  compete  with  currently-approved  therapies  and  new  therapies  that  may  become
available  in  the  future.  Key  product  features  that  would  affect  our  ability  to  effectively  compete  with  other  therapeutics  include  the  efficacy,  safety  and
convenience  of  our  products  and  the  ease  of  use  and  effectiveness  of  any  companion  diagnostics  and/or  complementary  diagnostics.  Potentially  competitive
therapies fall primarily into the following groups of treatment:

•

•

•

•

•

•

•

•

•

•

traditional cancer therapies, including chemotherapy and targeted therapies;

two anti-ILT4 (LILRB2) specific antibody programs in clinical trials, being developed by Merck & Co., Inc., or Merck, and Immune-Onc Therapeutics,
Inc., or Immune-Onc;

a dual antagonist anti-ILT4/ILT2 (LILRB1) antibody program in a clinical trial, being developed by NGM Biopharmaceuticals, Inc., or NGM;

three clinical-stage anti-ICOS agonist antibody programs in clinical trials, being developed by Bristol Myers Squibb, or BMS, GlaxoSmithKline plc, or
GSK, and Sanofi S.A.;

a bispecific anti-ICOS and anti-PD-1 antibody program in clinical development being developed by Xencor, Inc.;

three clinical-stage anti-ILT3 (LILRB4) antibody programs, in clinical trials being developed by Merck, Immune-Onc and NGM;

approved  immunotherapy  antibodies,  including  an  approved  anti-CTLA  4  antibody  (Yervoy ,  marketed  by  BMS)  and  approved  anti-PD-1/anti-PD-L1
antibodies (Bavencio , Keytruda , Libtayo , Opdivo , Tecentriq , Imfinzi , and Jemperli marketed by Merck KGaA and Pfizer, Inc., Merck, Regeneron
Pharmaceuticals, Inc., BMS, Genentech, Inc., AstraZeneca PLC, and GSK, respectively);

®

®

®

®

®

®

®

anti-PD-1/anti-PD-L1 immunotherapy antibodies in clinical development;

other agonist and antagonist immunotherapy antibodies in clinical development; and

antibody-drug conjugates, bi-specific antibodies, and other therapies targeting T regulatory cells and B cells, macrophages and other immune cell types
that are in clinical development.

The availability of reimbursement from government and other third-party payors will also significantly affect the pricing and competitiveness of our products. In
addition, our competitors may obtain Food and Drug Administration, or 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.

Many of the companies against which we may compete, either alone or with their strategic partners, have significantly greater financial resources and expertise in
research and development, manufacturing, preclinical testing, conducting clinical trials, obtaining regulatory approvals and marketing approved products than we
do.  These  competitors  also  compete  with  us  in  recruiting  and  retaining  qualified  scientific  and  management  personnel  and  establishing  clinical  trial  sites  and
patient registration for clinical trials, as well as in acquiring technologies complementary to, or necessary for, our programs.

Intellectual Property

Our intellectual property is critical to our business and we strive to protect it, including by obtaining and maintaining patent protection in the United States and
internationally  for  our  product  candidates,  novel  biological  discoveries,  including  new  targets  and  applications,  and  other  inventions  that  are  important  to  our
business.  For  our  product  candidates,  generally  we  intend  to  first  pursue  patent  protection  covering  both  compositions  of  matter  and  methods  of  use.  As  we
continue  the  development  of  our  product  candidates,  we  intend  to  identify  additional  means  of  obtaining  patent  protection  that  would  potentially  enhance
commercial success, including through additional methods of use and biomarker and companion diagnostic and/or complementary diagnostic related claims.

The  patent  positions  of  biotechnology  companies  like  ours  are  generally  uncertain  and  involve  complex  legal,  scientific  and  factual  questions.  In  addition,  the
coverage claimed in a patent application can be significantly reduced before the patent is issued, and its scope can be reinterpreted after issuance. Consequently,
we may not obtain or maintain adequate patent

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protection for any of our product candidates. As of February 28, 2022, with respect to JTX-8064 patent rights, we own three pending U.S. provisional applications,
one pending U.S. non-provisional application, twenty-four pending foreign patents and patent applications within two patent families that cover compositions of
matter and methods of use, and we own one issued U.S. patent that covers methods of use. As of February 28, 2022, with respect to vopratelimab patent rights, we
own seven pending U.S. non-provisional applications, forty pending foreign patents and patent applications, and two pending Patent Cooperation Treaty, or PCT,
patent applications within nine patent families that cover compositions of matter and methods of use and ICOS-related biomarkers, and we own two issued U.S.
patents and seven issued foreign patents that cover compositions of matter and methods of use. As of February 28, 2022, with respect to pimivalimab patent rights,
we own one pending U.S. non-provisional application, twenty pending foreign patents and patent applications, and one pending PCT application within two patent
families  that  cover  compositions  of  matter  and  methods  of  use,  and  we  own  one  issued  U.S.  patent  and  two  issued  foreign  patents  that  cover  compositions  of
matter and methods of use.

We cannot predict whether the patent applications we pursue will issue as patents in any particular jurisdiction or whether the claims of any issued patents will
provide any proprietary protection from competitors. Even if our pending patent applications are granted as issued patents, those patents, as well as any patents we
license from third parties, may be challenged, circumvented or invalidated by third parties.

In  addition,  we  exclusively  in-licensed  a  patent  portfolio  from  Sloan  Kettering  Institute  for  Cancer  Research,  Memorial  Sloan  Kettering  Cancer  Center  and
Memorial Hospital for Cancer, or MSK, and University of Texas MD Anderson Cancer Center, or MD Anderson, consisting of four issued U.S. patents, one issued
Australian patent, one issued Japanese patent, one issued Canadian patent, two issued Chinese patents, one issued Hong Kong patent, one issued European patent
that has been validated in thirteen European jurisdictions, one pending U.S. patent application, and one pending foreign patent application. This licensed patent
portfolio covers methods related to the use of an ICOS agonist in combination with blocking agents of certain T cell inhibitory receptors. The issued patents and
the pending patent applications (if issued) licensed from MSK and MD Anderson, if the appropriate maintenance, renewal, annuity or other governmental fees are
paid, are expected to expire in 2030, excluding any additional term for patent term adjustments or patent term extensions.

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 earliest date of filing a non-provisional patent application. In the United States, the patent term that covers an FDA-approved drug may
also  be  eligible  for  patent  term  extension,  which  permits  patent  term  restoration  as  compensation  for  the  patent  term  lost  during  the  FDA  regulatory  review
process. The Hatch-Waxman Act permits a patent term extension of up to five years beyond the expiration of the patent. The length of the patent term extension is
related to the length of time the drug is under regulatory review. Patent term extension 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  may  be  extended.  Similar  provisions  are  available  in  Europe  and  other
foreign jurisdictions to extend the term of a patent that covers an approved drug. In the future, if and when our products receive FDA approval, we expect to apply
for patent term extensions on patents covering those products. We plan to seek patent term extensions to any of our issued patents in any jurisdiction where these
are available. However, there is no guarantee that the applicable authorities, including the FDA in the United States, will agree with our assessment of whether
such extensions should be granted, and if granted, the length of such extensions.

We also rely on unpatented know-how, inventions and other proprietary information relating to JTX-8064, vopratelimab, pimivalimab, GS-1811, JTX-1484, our
future product candidates and our Translational Science Platform. We seek to protect and maintain the confidentiality of proprietary information to protect aspects
of our business that are not amenable to, or that we do not consider appropriate for, patent protection. Although we take steps to protect our proprietary information
and  trade  secrets,  including  through  contractual  means  with  our  employees  and  consultants,  third  parties  may  independently  develop  substantially  equivalent
proprietary information and techniques or otherwise gain access to our trade secrets or disclose our technology. Thus, we may not be able to meaningfully protect
our  trade  secrets.  It  is  our  policy  to  require  our  employees,  consultants,  outside  scientific  collaborators,  sponsored  researchers  and  other  advisors  to  execute
confidentiality agreements upon the commencement of employment or consulting relationships with us. These agreements provide that all confidential information
concerning our business or financial affairs developed or made known to the individual during the course of the individual’s relationship with us is to be kept
confidential and not disclosed to third parties except in specific circumstances. Our agreements with employees also provide that all inventions conceived by the
employee  in  the  course  of  employment  with  us  or  from  the  employee’s  use  of  our  confidential  information  are  our  exclusive  property.  However,  such
confidentiality  agreements  and  invention  assignment  agreements  can  be  breached,  and  we  may  not  have  adequate  remedies  for  any  such  breach.  For  a  more
comprehensive discussion of the risks related to our intellectual property, please see “Risk Factors—Risks Related to Intellectual Property.”

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Exclusive  License  Agreement  with  Sloan  Kettering  Institute  for  Cancer  Research,  Memorial  Sloan  Kettering  Cancer  Center,  and  Memorial  Hospital  for
Cancer and Allied Diseases

In  September  2015,  we  amended  and  restated  an  exclusive  license  agreement  from  December  2013  with  MSK.  Pursuant  to  this  amended  and  restated  license
agreement, MSK and MD Anderson granted to us a worldwide exclusive license under certain patents to manufacture, develop and commercialize certain products
and  services,  including  those  products  for  which  the  use  in  combination  with  another  product  for  the  treatment  of  any  disease  is  covered  by  such  patents
(including, potentially, vopratelimab), and to practice certain methods covered by the patents. Under the license agreement, we are obligated to use commercially
reasonable efforts to commercialize at least one licensed product or licensed service as defined in the license agreement.

In connection with the license agreement, we issued to MSK and MD Anderson an aggregate of 60,974 shares of our common stock. We also paid an upfront
license fee of $30,000 to MSK and MD Anderson. Commencing on the third anniversary of the effective date of the license agreement, we must pay an annual
maintenance fee ranging in the mid-four figures to the mid-five figures. The annual maintenance fee is fully credited against the royalty payments for the same
year or any subsequent year or any other amount due under the license agreement. We are obligated to pay MSK milestone payments of up to $3,475,000 for the
first and second licensed products to achieve certain development and marketing approval milestones, including up to $2,725,000 for the first licensed product to
achieve such developmental and marketing approval milestones. On a country-by-country basis and licensed product-by-licensed product or licensed service-by-
licensed service basis, we are also obligated to pay MSK a low single-digit percentage royalty on net sales of licensed products or licensed services, to the extent
used in combination with another product for the treatment of any disease covered by the applicable patents, until the earlier of the expiration of the last valid
patent claim covering such licensed product or licensed service in such country or twelve years after the first commercial sale of such licensed product or licensed
service in such country. If we sublicense our rights under our license agreement with MSK, we would be obligated to pay MSK a low double-digit percentage
royalty of the total gross proceeds we receive in consideration of the grant of the sublicense, excluding royalties, research and development funding, payments for
equity or debt securities and certain other expenses we have incurred that are reimbursed by the sublicensee.

Unless terminated earlier, the license agreement expires on the date that we no longer have any royalty payment obligations under the license agreement. We may
terminate  the  license  agreement  for  convenience  in  its  entirety  upon  30  days’  prior  written  notice  to  MSK  and  MD  Anderson.  Either  party  may  terminate  the
license agreement in its entirety in the event of an uncured material breach or the bankruptcy, insolvency, dissolution or winding up of the other party which is not
dismissed or cured within a set period of time. If we terminate the license agreement because of MSK’s and MD Anderson’s uncured breach or insolvency, we will
retain  a  non-exclusive,  perpetual,  irrevocable,  fully  paid-up,  royalty-free  worldwide  license  to  the  licensed  patents.  Upon  expiration  of  our  obligation  to  pay
royalties for a licensed product or service in a country, our license to the licensed patents for such licensed product or service will become exclusive, perpetual,
irrevocable, fully paid-up and royalty-free in such country.

Government Regulation

Government authorities in the United States at the federal, state and local level and in other countries regulate, among other things, the research, development,
testing, manufacture, quality control, approval, labeling, packaging, storage, record-keeping, promotion, advertising, sales, pricing, reimbursement, distribution,
post-approval monitoring and reporting, marketing and export and import of drug and biological products, including our product candidates. Generally, before a
new drug or biologic can be marketed, considerable data demonstrating its quality, safety and efficacy must be obtained, organized into a format specific for each
regulatory authority, submitted for review and approved by the regulatory authority.

U.S. Drug Development

In  the  United  States,  the  FDA  approves  and  regulates  drugs  under  the  Federal  Food,  Drug,  and  Cosmetic  Act,  or  FDCA,  and  its  implementing  regulations.
Biological  products,  or  biologics,  are  licensed  for  marketing  under  the  the  Public  Health  Service  Act,  or  PHSA,  and  regulated  under  the  FDCA  and  its
implementing regulations. Both drugs and biologics also are subject to other federal, state and local statutes and regulations. The process of obtaining regulatory
approvals and the subsequent compliance with appropriate federal, state, local and foreign statutes and regulations requires the expenditure of substantial time and
financial resources.

Our product candidates must be approved by the FDA through either a New Drug Application, or NDA, or Biologics License Application, or BLA, process before
they may be legally marketed in the United States. We expect JTX-8064, vopratelimab, pimivalimab, JTX-1484 and future product candidates to be regulated by
the  FDA  as  biologics  and  require  the  submission  of  a  BLA  prior  be  being  marketed  in  the  United  States.  A  company,  institution  or  organization  which  takes
responsibility for the initiation and management of a clinical development program for such products, and for their regulatory appoval, is typically

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referred to as a sponsor. A sponsor seeking approval of a new drug or biologic in the United States must generally complete each of the following steps:

•

•

•

•

•

•

•

•

•

•

completion of extensive preclinical studies in accordance with applicable regulations, including studies conducted in accordance with good laboratory
practice, or GLP, requirements and other applicable regulations;

design of a clinical trial protocol and submission to the FDA of an IND application, which must become effective before human clinical trials may begin;

approval by an independent institutional review board, or IRB, or ethics committee at each clinical trial site before each trial may be initiated;

performance of adequate and well-controlled human clinical trials in accordance with applicable IND regulations, good clinical practice, or GCP,
requirements and other clinical trial-related regulations to establish the safety and efficacy of the investigational product for each proposed indication;

submission to the FDA of an NDA or BLA;

determination by the FDA within 60 days of its receipt of an NDA or BLA to accept the application and file it for review;

satisfactory completion of an FDA pre-approval inspection of the manufacturing facility or facilities where the drug or biologic will be produced to assess
compliance with current good manufacturing practices, or cGMP, requirements to assure that the facilities, methods and controls are adequate to preserve
the drug or biologic’s identity, strength, quality and purity;

potential FDA audit of the preclinical and/or clinical trial sites that generated the data in support of the NDA or BLA;

FDA review and approval of the NDA or BLA, including consideration of the views of any FDA advisory committee, prior to any commercial marketing
or sale of the drug or biologic in the United States; and

compliance with any post-approval requirements, including the potential requirement to implement a Risk Evaluation and Mitigation Strategy, or REMS,
and the potential requirement to conduct post-approval studies.

Preclinical Studies and IND

The preclinical developmental stage generally involves laboratory evaluations of product chemistry, formulation and stability, as well as in vitro and animal studies
to evaluate toxicity, assess the potential for adverse events and, in some cases, establish a rationale for therapeutic use. The conduct of preclinical studies is subject
to federal regulations and requirements, including GLP regulations for safety/toxicology studies. An IND sponsor must submit the results of the preclinical tests,
together with manufacturing information, analytical data, any available clinical data or literature and plans for clinical trials, among other things, to the FDA as
part of an IND.

An IND is an exemption from the FDCA that allows an unapproved product candidate to be shipped in interstate commerce for use in an investigational clinical
trial  and  a  request  for  FDA  authorization  to  administer  such  investigational  product  to  humans.  Some  long-term  preclinical  testing,  such  as  animal  tests  of
reproductive adverse events and carcinogenicity, may continue after the IND is submitted. An IND automatically becomes effective 30 days after receipt by the
FDA, unless before that time, the FDA raises concerns or questions related to one or more proposed clinical trials and places the trial on clinical hold. In such a
case, the IND sponsor and the FDA must resolve any outstanding concerns before the clinical trial can begin. As a result, submission of an IND may not result in
the FDA allowing clinical trials to commence.

Following commencement of a clinical trial under an IND, the FDA may also place a clinical hold or partial clinical hold on that trial. Clinical holds are imposed
by the FDA whenever there is concern for patient safety and may be a result of new data, findings, or developments in clinical, non-clinical, and/or chemistry,
manufacturing, and controls. A  clinical  hold  is  an  order  issued  by  the  FDA  to  the  sponsor  to  delay  a  proposed  clinical  investigation  or  to  suspend  an  ongoing
investigation. A partial clinical hold is a delay or suspension of only part of the clinical work requested under the IND. For example, a specific protocol or part of a
protocol is not allowed to proceed, while other protocols may do so. Following issuance of a clinical hold or partial clinical hold, an investigation may only resume
after  the  FDA  has  notified  the  sponsor  that  the  investigation  may  proceed.  The  FDA  will  base  that  determination  on  information  provided  by  the  sponsor
correcting the deficiencies previously cited or otherwise satisfying the FDA that the investigation can proceed.

Clinical Trials

The clinical stage of development involves the administration of the investigational product to healthy volunteers or patients under the supervision of qualified
investigators in accordance with GCP requirements, including the requirement that all

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research subjects provide their informed consent. 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  and  assess  efficacy.  Each  protocol,  and  any
subsequent amendments to the protocol, must be submitted to the FDA as part of the IND. Furthermore, an IRB for each institution at which the clinical trial will
be  conducted  must  review  and  approve  the  protocol  before  a  clinical  trial  commences  at  such  institution,  approve  the  information  regarding  the  trial  and  the
consent form that must be provided to each clinical trial subject or his or her legal representative and must monitor the clinical trial until completed. Additionally,
some trials are overseen by an independent group of qualified experts organized by the trial sponsor, known as a data safety monitoring board or committee. This
group  provides  authorization  as  to  whether  or  not  a  trial  may  move  forward  at  designated  check  points  based  on  available  data  from  the  study.  There  also  are
requirements governing the reporting of ongoing clinical trials and completed clinical trial results to public registries.

Clinical trials generally are conducted in three sequential phases, known as Phase 1, Phase 2 and Phase 3, which may overlap.

•

•

•

Phase 1 clinical trials generally involve a small number of healthy volunteers or disease-affected patients who are initially exposed to a single dose and
then multiple doses of the product candidate. The primary purpose of these clinical trials is to assess the metabolism, pharmacologic action, side effect
tolerability and safety of the drug.

Phase 2 clinical trials involve studies in disease-affected patients to determine the dose required to produce the desired benefits. At the same time, safety
and further pharmacokinetic and pharmacodynamic information is collected, possible adverse effects and safety risks are identified, and a preliminary
evaluation of efficacy is conducted.

Phase 3 clinical trials generally involve a large number of patients at multiple sites and are designed to provide the data necessary to demonstrate the
effectiveness  of  the  product  for  its  intended  use,  its  safety  in  use  and  to  establish  the  overall  benefit/risk  relationship  of  the  product  and  provide  an
adequate basis for product approval. These trials may include comparisons with placebo and/or other comparator treatments. The duration of treatment is
often extended to mimic the actual use of a product during marketing.

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

In August 2018, the FDA released a draft guidance entitled “Expansion Cohorts: Use in First-In-Human Clinical Trials to Expedite Development of Oncology
Drugs  and  Biologics,”  which  outlines  how  developers  can  utilize  an  adaptive  trial  design  commonly  referred  to  as  a  seamless  trial  design  in  early  stages  of
oncology biological product development (i.e., the first-in-human clinical trial) to compress the traditional three phases of trials into one continuous trial called an
expansion cohort trial. Information to support the design of individual expansion cohorts are included in IND applications and assessed by FDA. Expansion cohort
trials can potentially bring efficiency to product development and reduce developmental costs and time.

Progress reports detailing the results of the clinical trials must be submitted at least annually to the FDA and written IND safety reports must be submitted to the
FDA and the investigators for serious and unexpected suspected adverse events, findings from animal or in vitro testing or other studies that suggest a significant
risk  for  human  subjects  and  any  clinically  important  increase  in  the  rate  of  a  serious  suspected  adverse  reaction  over  that  listed  in  the  protocol  or  investigator
brochure.

Clinical trials may not be completed successfully within any specified period, if at all. The FDA or the sponsor may suspend or terminate a clinical trial at any time
on various grounds, including a finding that the research subjects or patients are being exposed to an unacceptable health risk. 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 drug or biologic
has been associated with unexpected serious harm to patients. Results from one trial are not necessarily predictive of results from later trials.

Finally, sponsors of clinical trials are required to register and disclose certain clinical trial information on a public registry (clinicaltrials.gov) maintained by the
U.S. National Institutes of Health, or NIH. Information related to the product, patient population, phase of investigation, study sites and investigators and other
aspects  of  the  clinical  trial  is  made  public  as  part  of  the  registration  of  the  clinical  trial.  The  failure  to  submit  clinical  trial  information  to  clinicaltrials.gov,  as
required, is a prohibited act under the FDCA with violations subject to potential civil monetary penalties of up to $10,000 for each day the violation continues.

Concurrent with clinical trials, companies usually complete additional animal studies and must develop additional information about the chemistry and physical
characteristics of the drug or biologic as well as finalize a process for manufacturing the product in commercial quantities in accordance with cGMP requirements.
The manufacturing process must be capable of consistently producing quality batches of the product and, among other things, companies must develop methods
for testing the identity, strength, quality and purity of the final product. Additionally, appropriate packaging must be selected and tested, and stability studies must
be conducted to demonstrate that our product candidates do not undergo unacceptable deterioration over their shelf life.

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Expanded Access to an Investigational Drug for Treatment Use

Expanded access, sometimes called “compassionate use,” is the use of investigational new drug products outside of clinical trials to treat patients with serious or
immediately life-threatening diseases or conditions when there are no comparable or satisfactory alternative treatment options. The rules and regulations related to
expanded access are intended to improve access to investigational drugs for patients who may benefit from investigational therapies. FDA regulations allow access
to investigational drugs under an IND by the company or the treating physician for treatment purposes on a case-by-case basis for: individual patients (single-
patient IND applications for treatment in emergency settings and non-emergency settings); intermediate-size patient populations; and larger populations for use of
the drug under a treatment protocol or Treatment IND Application.

There is no obligation for a sponsor to make its investigational products available for expanded access; however, as required by amendments to the FDCA in 2016,
drug  and  biologic  companies  must  make  publicly  available  their  policies  for  expanded  access  for  individual  patient  access  to  products  intended  for  serious
diseases. Sponsors are required to make such policies publicly available upon the earlier of initiation of a Phase 2 or Phase 3 study; or 15 days after the drug or
biologic receives designation as a breakthrough therapy, fast track product, or regenerative medicine advanced therapy. 

In addition, on May 30, 2018, the Right to Try Act, was signed into law. The law, among other things, provides a federal framework for certain patients to access
certain  investigational  new  drug  products  that  have  completed  a  Phase  1  clinical  trial  and  that  are  undergoing  investigation  for  FDA  approval.  Under  certain
circumstances,  eligible  patients  can  seek  treatment  without  enrolling  in  clinical  trials  and  without  obtaining  FDA  permission  under  the  FDA  expanded  access
program.  There  is  no  obligation  for  a  drug  manufacturer  to  make  its  drug  products  available  to  eligible  patients  as  a  result  of  the  Right  to  Try  Act,  but  the
manufacturer must develop an internal policy and respond to patient requests according to that policy.

NDA/BLA and FDA Review Process

The  results  of  preclinical  studies  and  clinical  trials,  together  with  other  detailed  information,  including  proposed  labeling,  chemistry  and  manufacturing
information, are submitted to the FDA as part of an NDA or BLA. The NDA or BLA is a request for approval to market the drug or biologic for one or more
specified indications and must contain proof of safety and efficacy for a drug or safety, purity and potency for a biologic. The FDA must approve the NDA or BLA
before a drug or biologic may be marketed in the United States.

Under the Prescription Drug User Fee Act, or PDUFA, as amended, each NDA or BLA must be accompanied by a user fee. Under federal law, the submission of
most applications is subject to an application user fee, which for federal fiscal year 2022 is $3,117,218 for an application requiring clinical data. The sponsor of an
approved application is also subject to an annual program fee, which for federal fiscal year 2022 is $369,413. These fees may be increased or decreased annually,
and fee waivers, reductions or deferrals are available in certain circumstances.

Upon receipt of an NDA or BLA, the FDA conducts a preliminary review of the application within 60 days and it must inform the sponsor at that time or before
whether an application is sufficiently complete to permit substantive review. In the event that FDA determines that an application does not satisfy this standard, it
will issue a Refuse to File, or RTF, determination to the sponsor. The FDA may request additional information or studies, and the sponsor may resubmit the NDA
or BLA with the additional information.

If the submission is found to be complete, the FDA will file the NDA or BLA, triggering a full review. The established goal of the FDA is to review applications
within ten months of the filing date for a new molecular-entity NDA or original BLA and within six months from the filing date for a new molecular-entity NDA
or original BLA designated for priority review. The FDA does not always meet its goal dates for standard and priority NDAs or BLAs, and the review process is
often extended by FDA requests for additional information or clarification.

In connection with its review of an NDA or BLA, the FDA will inspect the manufacturing facilities for the new product and will not approve the product unless the
facilities comply with cGMP requirements. The FDA may also refer applications for novel drug products or drug products which 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, if any. The FDA is not bound by recommendations of an advisory committee, but it considers such
recommendations when making decisions on approval. Additionally, the FDA may audit data from clinical trials to ensure compliance with GCP requirements and
likely will reanalyze the clinical trial data, which could result in extensive discussions between the FDA and the sponsor during the review process.

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After evaluating the application and all related information, the FDA will determine whether the expected benefits of the proposed product outweigh its potential
risks to patients. The FDA will then issue either a Complete Response Letter, or CRL, or an approval letter. A CRL describes additional work that must be done
before  the  application  can  be  approved,  such  as  requiring  additional  clinical  data,  additional  pivotal  Phase  3  clinical  trial(s)  and/or  other  significant  and  time-
consuming requirements related to clinical trials, preclinical studies or manufacturing. Even if such data and information are submitted, the FDA may decide that
the NDA or BLA does not satisfy the criteria for approval. Data obtained from clinical trials are not always conclusive, and the FDA may interpret data differently
than we interpret the same data.

An approval letter, on the other hand, authorizes commercial marketing of the product with specific prescribing information for specific indications. That is, the
approval will be limited to the conditions of use (e.g., patient population, indication) described in the FDA-approved labeling. Further, depending on the specific
risk(s) to be addressed, the FDA may require that contraindications, warnings or precautions be included in the product labeling, require that post-approval trials,
including Phase 4 clinical trials, be conducted to further assess a product’s safety after approval. After approval, some types of changes to the approved product,
such as adding new indications, manufacturing changes and additional labeling claims, are subject to further testing requirements and FDA review and approval.

Orphan Drug Designation

Under the Orphan Drug Act, the FDA may grant orphan designation to a drug or biological product intended to treat a rare disease or condition, which is generally
a disease or condition that affects fewer than 200,000 individuals in the United States, or more than 200,000 individuals in the United States and for which there is
no reasonable expectation that the cost of developing and making the product available in the United States for this type of disease or condition will be recovered
from sales of the product.

Orphan drug designation must be requested before submitting an NDA or BLA. After the FDA grants orphan drug designation, the identity of the therapeutic agent
and its potential orphan use are disclosed publicly by the FDA. Orphan drug designation does not convey any advantage in or shorten the duration of the regulatory
review and approval process.

If a product that has orphan designation subsequently receives the first FDA approval for the disease or condition for which it has such designation, the product is
entitled to orphan drug exclusivity, which means that the FDA may not approve any other applications to market the same drug for the same indication for seven
years from the date of such approval, except in limited circumstances. These circumstances are where another product shows clinical superiority to the product
with orphan drug exclusivity because it is shown to be safer, more effective or makes a major contribution to patient care. This is the case despite an earlier court
opinion holding that the Orphan Drug Act unambiguously required the FDA to recognize orphan exclusivity regardless of a showing of clinical superiority.

Competitors may also receive approval of either a different product for the same indication or the same product for a different indication but that could be used off-
label in the orphan indication. Orphan drug exclusivity also could block the approval of one of our products if a competitor obtains approval before we do for the
same product, as defined by the FDA, for the same indication we are seeking approval, or if one of our products is determined to be contained within the scope of
the competitor’s product for the same indication or disease. If one of our products designated as an orphan drug receives marketing approval for an indication
broader than that which is designated, it may not be entitled to orphan drug exclusivity. Orphan drug status in the European Union has similar, but not identical,
requirements and benefits.

Expedited Development and Review Programs

The FDA has various programs, including a fast track program, priority review and accelerated approval, that are intended to expedite or facilitate the process for
reviewing new drugs and biologics that, generally, are intended to treat a serious or life-threatening condition, demonstrate the potential to address unmet medical
needs and that offer meaningful benefits over existing treatments. The fast track program is designed to facilitate the development and review of drugs to treat
serious  or  life-threatening  diseases  or  conditions  and  fulfill  unmet  needs.  Priority  review  is  designed  to  give  drugs  that  offer  major  advances  in  treatment  or
provide  treatment  where  no  adequate  therapy  exists.  The  FDA  will  attempt  to  direct  additional  resources  to  the  evaluation  of  an  application  for  a  new  drug  or
biologic designated for priority review in an effort to facilitate the review. None of these expedited programs changes the standards for approval, but each may help
expedite the development or approval process governing product candidates.

A candidate product may also be eligible for accelerated approval if it treats a serious or life-threatening condition and generally provides a meaningful advantage
over available therapies. In addition, the investigational product must demonstrate 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, or IMM, which is reasonably likely to predict an effect on
IMM  or  other  clinical  benefit.  As  a  condition  of  approval,  the  FDA  may  require  that  a  sponsor  of  a  drug  or  biologic  receiving  accelerated  approval  perform
adequate and well-controlled post-marketing clinical trials.

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Additionally, a drug or biologic may be eligible for designation as a breakthrough therapy if the product is intended, alone or in combination with one or more
other drugs or biologics, to treat a serious or life-threatening condition and preliminary clinical evidence indicates that the product may demonstrate substantial
improvement over currently approved therapies on one or more clinically significant endpoints. The benefits of breakthrough therapy designation include the same
benefits as fast track designation, plus intensive guidance from the FDA to ensure an efficient drug development program.

Pediatric Information

Under the Pediatric Research Equity Act, an NDA or BLA or supplement to an NDA or BLA must contain data to assess the safety and efficacy of the drug for the
claimed indications in all relevant pediatric subpopulations and to support dosing and administration for each pediatric subpopulation for which the product is safe
and effective. The assessment must also support dosing and administration for each pediatric subpopulation for which the product is safe and effective. The Food
and Drug Administration Safety and Innovation Act, or FDASIA, requires the submission of a pediatric study plan prior to the assessment of data, which must
contain proposed pediatric study, including study design and objectives, any deferral or waiver requests, and any other information required by regulation. The
FDA may, on its own initiative or at the request of the sponsor, grant deferrals for submission of some or all pediatric data until after approval of the product for
use in adults, or full or partial waivers from the pediatric data requirements. A deferral may be granted for several reasons, including a finding that the product or
therapeutic candidate is ready for approval for use in adults before pediatric trials are complete or that additional safety or effectiveness data needs to be collected
before the pediatric trials begin.

Post-marketing Requirements

Following approval of a new product, the manufacturer and the approved product are subject to continuing regulation by the FDA, including, among other things,
monitoring and record-keeping activities, reporting of adverse experiences, complying with promotion and advertising requirements, which include restrictions on
promoting drugs for unapproved uses or patient populations (known as “off-label use”) and limitations on industry-sponsored scientific and educational activities.

The FDA strictly regulates marketing, labeling, advertising and promotion of products that are placed on the market. The FDA and other agencies actively enforce
the laws and regulations prohibiting the promotion of off-label uses, and a company that is found to have improperly promoted off-label uses may be subject to
significant  liability.  If  a  company  is  found  to  have  promoted  off-label  uses,  it  may  become  subject  to  adverse  public  relations  and  administrative  and  judicial
enforcement  by  the  FDA,  the  Department  of  Justice,  or  the  Office  of  the  Inspector  General  of  the  Department  of  Health  and  Human  Services,  as  well  as  state
authorities. In September 2021, the FDA published final regulations that describe the types of evidence that the agency will consider in determining the intended
use of a drug or biologic.

The FDA may also place other conditions on approvals, including imposing limitations on the uses for which the product may be marketed, requiring that warning
statements  be  included  in  the  product  labeling,  requiring  that  additional  studies  be  conducted  following  approval  as  a  condition  of  the  approval,  imposing
restrictions  and  conditions  on  product  distribution,  prescribing  or  dispensing  in  the  form  of  a  REMS  or  otherwise  limiting  the  scope  of  any  approval.  Product
approvals may be withdrawn for non-compliance with regulatory requirements or if problems occur following initial marketing.

FDA regulations require that products be manufactured in specific approved facilities and in accordance with cGMP regulations. We rely, and expect to continue to
rely, on third parties for the production of clinical and commercial quantities of our products in accordance with cGMP regulations. These manufacturers must
comply  with  cGMP  regulations  that  require,  among  other  things,  quality  control  and  quality  assurance,  the  maintenance  of  records  and  documentation  and  the
obligation to investigate and correct any deviations from cGMP. Manufacturers and other entities involved in the manufacture and distribution of approved drugs
or  biologics  are  required  to  register  their  establishments  with  the  FDA  and  certain  state  agencies.  The  discovery  of  violative  conditions,  including  failure  to
conform to cGMP regulations, could result in enforcement actions, and the discovery of problems with a product after approval may result in restrictions on a
product, manufacturer or holder of an approved NDA or BLA, including recall.

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Companion Diagnostics and Complementary Diagnostics

We  believe  that  the  success  of  our  product  candidates  may  depend,  in  part,  on  the  development  and  commercialization  of  either  a  companion  diagnostic  or
complementary  diagnostic.  Companion  diagnostics  and  complementary  diagnostics  can  identify  patients  who  are  most  likely  to  benefit  from  a  particular
therapeutic product, identify patients likely to be at increased risk for serious side effects as a result of treatment with a particular therapeutic product, or monitor
response  to  treatment  with  a  particular  therapeutic  product  for  the  purpose  of  adjusting  treatment  to  achieve  improved  safety  or  effectiveness.  Companion
diagnostics  and  complementary  diagnostics  are  regulated  as  medical  devices  by  the  FDA  and,  as  such,  require  either  clearance  or  approval  prior  to
commercialization.  The  level  of  risk  combined  with  available  controls  to  mitigate  risk  determines  whether  a  companion  diagnostic  device  requires  Premarket
Approval Application approval or is cleared through the 510(k) premarket notification process. Under FDA guidance, for a novel therapeutic product for which a
companion  diagnostic  device  is  essential  for  the  safe  and  effective  use  of  the  product,  the  companion  diagnostic  device  should  be  developed  and  approved  or
510(k)-cleared contemporaneously with the therapeutic. The use of the companion diagnostic device will be stipulated in the labeling of the therapeutic product.
This is also true for a complementary diagnostic, although it is not a prerequisite for receiving the therapeutic.

If safe and effective use of a therapeutic depends on an in vitro diagnostic, then the FDA generally will require approval or clearance of that diagnostic, known as a
companion diagnostic, at the same time that the FDA approves the therapeutic product. In August 2014, the FDA issued final guidance clarifying the requirements
that will apply to approval of therapeutic products and in vitro companion diagnostics. According to the guidance, if FDA determines that a companion diagnostic
device  is  essential  to  the  safe  and  effective  use  of  a  novel  therapeutic  product  or  indication,  FDA  generally  will  not  approve  the  therapeutic  product  or  new
therapeutic product indication if the companion diagnostic device is not approved or cleared for that indication. Approval or clearance of the companion diagnostic
device  will  ensure  that  the  device  has  been  adequately  evaluated  and  has  adequate  performance  characteristics  in  the  intended  population.  The  level  of  risk
combined  with  available  controls  to  mitigate  risk  determines  whether  a  companion  diagnostic  device  requires  Premarket  Approval  Application  approval  or  is
cleared  through  the  510(k)  premarket  notification  process.  The  review  of  in  vitro  companion  diagnostics  in  conjunction  with  the  review  of  our  therapeutic
treatments  for  cancer  will,  therefore,  likely  involve  coordination  of  review  by  the  FDA’s  Center  for  Drug  Evaluation  and  Research  and  the  FDA’s  Center  for
Devices and Radiological Health Office of In Vitro Diagnostics Device Evaluation and Safety.

In April 2020, the FDA issued additional guidance which describes considerations for the development and labeling of companion diagnostic devices to support
the  indicated  uses  of  multiple  drug  or  biological  oncology  products,  when  appropriate.  This  guidance  builds  upon  existing  policy  regarding  the  labeling  of
companion  diagnostics.  The  2020  guidance  expands  on  the  policy  statement  in  the  2014  guidance  by  recommending  that  companion  diagnostic  developers
consider a number of factors when determining whether their test could be developed, or the labeling for approved companion diagnostics could be revised through
a supplement, to support a broader labeling claim such as use with a specific group of oncology therapeutic products (rather than listing an individual therapeutic
product(s)).

Other Regulatory Matters

Manufacturing, sales, promotion and other activities following product approval are also subject to regulation by numerous regulatory authorities in the United
States in addition to the FDA, including the Centers for Medicare & Medicaid Services, other divisions of the Department of Health and Human Services, the
Department  of  Justice,  the  Drug  Enforcement  Administration,  the  Consumer  Product  Safety  Commission,  the  Federal  Trade  Commission,  the  Occupational
Safety & Health Administration, the Environmental Protection Agency and state and local governments.

For example, in the United States, sales, marketing and scientific and educational programs also must comply with state and federal fraud and abuse laws. These
laws include the federal Anti-Kickback Statute, which makes it illegal for any person, including a prescription drug manufacturer (or a party acting on its behalf),
to knowingly and willfully solicit, receive, offer or pay any remuneration that is intended to induce or reward referrals, including the purchase, recommendation,
order or prescription of a particular drug, for which payment may be made under a federal healthcare program, such as Medicare or Medicaid.

Although we would not submit claims directly to payors, manufacturers also can be held liable under the federal False Claims Act, which prohibits anyone from
knowingly  presenting,  or  causing  to  be  presented,  for  payment  to  federal  programs  (including  Medicare  and  Medicaid)  claims  for  items  or  services,  including
drugs  or  biologics,  that  are  false  or  fraudulent,  claims  for  items  or  services  not  provided  as  claimed  or  claims  for  medically  unnecessary  items  or  services.  In
addition, our future activities relating to the reporting of wholesaler or estimated retail prices for our products, the reporting of prices used to calculate Medicaid
rebate information and other information affecting federal, state and third-party reimbursement for our products, and the sale and marketing of our products, are
subject to scrutiny under this law.

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Pricing  and  rebate  programs  must  comply  with  the  Medicaid  rebate  requirements  of  the  U.S.  Omnibus  Budget  Reconciliation  Act  of  1990  and  more  recent
requirements in the Affordable Care Act. The distribution of pharmaceutical products is subject to additional requirements and regulations, including extensive
record-keeping, licensing, storage and security requirements intended to prevent the unauthorized sale of pharmaceutical products.

The failure to comply with any of these laws or regulatory requirements subjects us to possible legal or regulatory action. Depending on the circumstances, failure
to meet applicable regulatory requirements can result in criminal prosecution, fines or other penalties, injunctions, requests for recall, seizure of products, total or
partial  suspension  of  production,  denial  or  withdrawal  of  product  approvals  or  refusal  to  allow  a  firm  to  enter  into  supply  contracts,  including  government
contracts. Any action against us for violation of these laws, even if we successfully defend against it, could cause us to incur significant legal expenses and divert
our  management’s  attention  from  the  operation  of  our  business.  Prohibitions  or  restrictions  on  sales  or  withdrawal  of  future  products  marketed  by  us  could
materially affect our business in an adverse way.

Changes in regulations, statutes or the interpretation of existing regulations could impact our business in the future by requiring, for example: (i) changes to our
manufacturing arrangements; (ii) additions or modifications to product labeling; (iii) the recall or discontinuation of our products; or (iv) additional record-keeping
requirements. If any such changes were to be imposed, they could adversely affect the operation of our business.

U.S. Patent Term Restoration and Non-Patent Exclusivity

Depending upon the timing, duration and specifics of FDA approval of any of our product candidates, some of our U.S. patents may be eligible for limited patent
term extension under the Drug Price Competition and Patent Term Restoration Act of 1984, commonly referred to as the Hatch-Waxman Amendments. The Hatch-
Waxman  Amendments  permit  restoration  of  the  patent  term  of  up  to  five  years  as  compensation  for  patent  term  lost  during  product  development  and  FDA
regulatory review process. Patent term restoration, however, cannot extend the remaining term of a patent beyond a total of 14 years from the product’s approval
date. Assuming grant of the patent for which the extension is sought, the restoration period for a patent covering a product is typically one‑half the time between
the effective date of the IND and the submission date of the NDA or BLA, plus the time between the submission date of the application and the ultimate approval
date. The United States Patent and Trademark Office, or USPTO, in consultation with the FDA, reviews and approves the application for any patent term extension
or restoration.

Market  and  data  exclusivity  provisions  under  the  FDCA  also  can  delay  the  submission  and  the  approval  of  certain  applications.  For  drug  products,  the  FDCA
provides a five-year period of non-patent or regulatory exclusivity within the United States to the first applicant to gain approval of an NDA for a new chemical
entity; a drug is a new chemical entity if the FDA has not previously approved any other new drug containing the same active moiety, which is the molecule or ion
responsible for the action of the drug substance. This interpretation of the FDCA by the FDA was confirmed with the enactment of the Ensuring Innovation Act in
April 2021.

An abbreviated approval pathway for biological products shown to be biosimilar to, or interchangeable with, an FDA-licensed reference biological product was
created by the Biologics Price Competition and Innovation Act of 2009 as part of the Affordable Care Act. Biosimilarity, which requires that the biological product
be  highly  similar  to  the  reference  product  notwithstanding  minor  differences  in  clinically  inactive  components  and  that  there  be  no  clinically  meaningful
differences between the product and the reference product in terms of safety, purity and potency, can be shown through analytical studies, animal studies and a
clinical trial or trials. Complexities associated with the larger, and often more complex, structure of biological products as compared to small molecule drugs, as
well as the processes by which such products are manufactured, pose significant hurdles to implementation that are still being worked out by the FDA.

A reference biological product is granted twelve years of data exclusivity from the time of first licensure of the product, and the FDA will not accept an application
for a biosimilar or interchangeable product based on the reference biological product until four years after the date of first licensure of the reference product. “First
licensure” typically means the initial date the particular product at issue was licensed in the United States. It is necessary to determine whether a new product
includes a modification to the structure of a previously licensed product that results in a change in safety, purity, or potency to assess whether the licensure of the
new product is a first licensure that triggers its own period of exclusivity and, for subsequent applications, such determinations are made a case-by-case basis with
data  submitted  by  the  sponsor.  As  of  December  27,  2021,  the  FDA  has  approved  33  biosimilar  products  for  use  in  the  United  States  and  two  interchangeable
biosimilars, including one interchangeable monoclonal antibody.

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Pediatric Exclusivity

Pediatric  exclusivity  is  another  type  of  regulatory  exclusivity  in  the  United  States.  Pediatric  exclusivity,  if  granted,  adds  six  months  to  existing  regulatory
exclusivity periods and, for drug products, existing patents. This six-month exclusivity may be granted based on the voluntary completion of a pediatric trial in
accordance with an FDA-issued “Written Request” for such a trial. The data do not need to show the product to be effective in the pediatric population studied;
rather,  if  the  clinical  trial  is  deemed  to  fairly  respond  to  the  FDA’s  request,  the  additional  protection  is  granted.  If  reports  of  requested  pediatric  studies  are
submitted to and accepted by the FDA within the statutory time limits, whatever statutory or regulatory periods of exclusivity or patents that cover the product are
extended by six months.

Foreign Regulation

As in the United States, we will be subject to a variety of foreign regulations governing clinical trials and commercial sales and distribution of our future products
and medicinal products can be marketed only if a marketing authorization from the competent regulatory agencies has been obtained.

On  January  31,  2022,  the  new  Clinical  Trials  Regulation  (EU)  No  536/2014  became  effective  in  the  European  Union  and  replaced  the  prior  Clinical  Trials
Directive  2001/20/EC.  The  new  regulation  aims  at  simplifying  and  streamlining  the  authorization,  conduct  and  transparency  of  clinical  trials  in  the  European
Union. Under the new coordinated procedure for the approval of clinical trials, the sponsor of a clinical trial to be conducted in more than one Member State of the
European Union, or EU Member State, will only be required to submit a single application for approval. The submission will be made through the Clinical Trials
Information System, a new clinical trials portal overseen by the EMA and available to clinical trial sponsors, competent authorities of the EU Member States and
the public.

The new regulation did not change the preexisting requirement that a sponsor must obtain prior approval from the competent national authority of the EU Member
State in which the clinical trial is to be conducted. If the clinical trial is conducted in different EU Member States, the competent authorities in each of these EU
Member States must provide their approval for the conduct of the clinical trial. Furthermore, the sponsor may only start a clinical trial at a specific study site after
the applicable ethics committee has issued a favorable opinion.

Parties  conducting  certain  clinical 
https://eudract.ema.europaeu.

trials  must,  as 

in 

the  United  States,  post  clinical 

trial 

information 

in 

the  EU  at 

the  EudraCT  website:

To obtain regulatory approval of an investigational product under European Union regulatory systems, we must submit a marketing authorization application under
either a centralized or decentralized procedure. The centralized procedure is compulsory for medicinal products produced by biotechnology. The application used
to  file  the  BLA  in  the  United  States  is  similar  to  that  required  in  the  European  Union,  with  the  exception  of,  among  other  things,  region-specific  document
requirements.

The  European  Union  also  provides  opportunities  for  market  exclusivity.  For  example,  upon  receiving  marketing  authorization,  innovative  medicinal  products
generally receive eight years of data exclusivity and an additional two years of market exclusivity. If grated, data exclusivity prevents regulatory authorities in the
European Union from referencing the innovator’s data to assess a generic or biosimilar application. There is no guarantee that a product will be considered by the
European  Union’s  regulatory  authorities  to  be  an  innovative  medicinal  product,  and  products  may  not  qualify  for  data  exclusivity.  Products  receiving  orphan
designation in the European Union can receive ten years of market exclusivity, during which time no similar medicinal product for the same indication may be
placed on the market. An orphan product can also obtain an additional two years of market exclusivity in the European Union for pediatric studies (six months for
other products). No extension to any supplementary protection certificate can be granted on the basis of pediatric studies for orphan indications.

If  we  fail  to  comply  with  applicable  foreign  regulatory  requirements,  we  may  be  subject  to,  among  other  things,  fines,  suspension  or  withdrawal  of  regulatory
approvals, product recalls, seizure of products, operating restrictions and criminal prosecution.

Brexit and the Regulatory Framework in the United Kingdom

The  United  Kingdom’s  withdrawal  from  the  EU  took  place  on  January  31,  2020.  As  of  January  1,  2021,  the  Medicines  and  Healthcare  products  Regulatory
Agency,  or  the  MHRA,  became  responsible  for  supervising  medicines  and  medical  devices  in  Great  Britain,  comprising  England,  Scotland  and  Wales  under
domestic law whereas Northern Ireland continues to be subject to EU rules under the Northern Ireland Protocol. The MHRA will rely on the Human Medicines
Regulations 2012 (SI 2012/1916) (as amended), or the HMR, as the basis for regulating medicines. The HMR has incorporated into the domestic law the body of
EU law instruments governing medicinal products that pre-existed prior to the U.K.’s withdrawal from the EU.

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General Data Protection Regulation

The collection, use, disclosure, transfer, or other processing of personal data regarding individuals in the EU, including personal health data, is subject to the EU
General  Data  Protection  Regulation,  or  GDPR,  which  became  effective  on  May  25,  2018.  The  GDPR  is  wide-ranging  in  scope  and  imposes  numerous
requirements  on  companies  that  process  personal  data,  including  requirements  relating  to  processing  health  and  other  sensitive  data,  obtaining  consent  of  the
individuals to whom the personal data relates, providing information to individuals regarding data processing activities, implementing safeguards to protect the
security  and  confidentiality  of  personal  data,  providing  notification  of  data  breaches,  and  taking  certain  measures  when  engaging  third-party  processors.  The
GDPR also imposes strict rules on the transfer of personal data to countries outside the EU, including the U.S., and permits data protection authorities to impose
large penalties for violations of the GDPR, including potential fines of up to €20 million or 4% of annual global revenues, whichever is greater. The GDPR also
confers a private right of action on data subjects and consumer associations to lodge complaints with supervisory authorities, seek judicial remedies, and obtain
compensation for damages resulting from violations of the GDPR. Compliance with the GDPR will be a rigorous and time-intensive process that may increase the
cost of doing business or require companies to change their business practices to ensure full compliance.

Reimbursement

Sales  of  our  products  will  depend,  in  part,  on  the  extent  to  which  our  products  will  be  covered  by  third-party  payors,  such  as  government  health  programs,
commercial  insurance  and  managed  healthcare  organizations.  In  the  United  States,  no  uniform  policy  of  coverage  and  reimbursement  for  drug  or  biological
products exists. Accordingly, decisions regarding the extent of coverage and amount of reimbursement to be provided for any of our products will be made on a
payor-by-payor basis. 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.

The United States government, state legislatures and foreign governments have shown significant interest in implementing cost containment programs to limit the
growth  of  government-paid  health  care  costs,  including  price-controls,  restrictions  on  reimbursement  and  requirements  for  substitution  of  generic  products  for
branded prescription drugs. If we obtain approval in the future to market any our product candidates, we may seek approval and coverage for those products under
Medicaid, Medicare and the Public Health Service pharmaceutical pricing program and may seek approval to sell the products to federal agencies. Adoption of
general controls and measures, coupled with the tightening of restrictive policies in jurisdictions with existing controls and measures, could limit payments for
pharmaceutical drugs.

Medicaid is a joint federal and state program that is administered by the states for low income and disabled beneficiaries. The Medicaid Drug Rebate Program
requires pharmaceutical manufacturers to pay a rebate for each product reimbursed by the state Medicaid programs. The amount of the rebate for each product is
set by law and may be subject to an additional discount if certain pricing increases more than inflation.

Medicare  is  a  federal  program  that  is  administered  by  the  federal  government.  The  program  covers  individuals  age  65  and  over  as  well  as  those  with  certain
disabilities. Medicare Part D provides coverage to enrolled Medicare patients for self-administered drugs (i.e., drugs that are not administered by a physician).
Medicare  Part  D  is  administered  by  private  prescription  drug  plans  approved  by  the  U.S.  government  and  each  drug  plan  establishes  its  own  Medicare  Part  D
formulary for prescription drug coverage and pricing, which the drug plan may modify from time to time.

Medicare Part B covers most injectable drugs given in an in-patient setting, and some drugs administered by a licensed medical provider in hospital outpatient
departments  and  doctors’  offices.  Medicare  Part  B  is  administered  by  Medicare  Administrative  Contractors,  which  generally  have  the  responsibility  of  making
coverage decision. Subject to certain payment adjustments and limits, Medicare generally pays for Part B covered drugs based on a percentage of a manufacturer-
reported average sales price.

As  noted  above,  the  marketability  of  any  products  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. An increasing emphasis on cost containment measures in the United States has increased and we
expect will continue to increase the pressure on pharmaceutical 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.

In addition, in most foreign countries, the proposed pricing for a drug must be approved before it may be lawfully marketed. The requirements governing drug
pricing and reimbursement vary widely from country to country. There can be no assurance that any country that has price controls or reimbursement limitations
for pharmaceutical products will allow favorable reimbursement and pricing arrangements for any of our products. Historically, products launched in the European
Union do not follow price structures of the United States and generally prices tend to be significantly lower.

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Healthcare Reform

A primary trend in the U.S. healthcare industry and elsewhere is cost containment. There have been a number of federal and state proposals during the last few
years  regarding  the  pricing  of  pharmaceutical  and  biopharmaceutical  products,  limiting  coverage  and  reimbursement  for  drugs  and  other  medical  products,
government  control  and  other  changes  to  the  healthcare  system  in  the  United  States.  By  way  of  example,  the  United  States  and  state  governments  continue  to
propose  and  pass  legislation  designed  to  reduce  the  cost  of  healthcare.  In  March  2010,  the  United  States  Congress  enacted  the  Affordable  Care  Act,  or  ACA,
which, among other things, includes changes to the coverage and payment for products under government health care programs.

Since enactment of the ACA, there have been numerous legal challenges and Congressional actions to repeal and replace provisions of the law. For example, with
enactment of the Tax Cuts and Jobs Act of 2017, Congress repealed the “individual mandate.” The repeal of this provision, which requires most Americans to
carry  a  minimal  level  of  health  insurance,  became  effective  in  2019.  Litigation  and  legislation  over  the  ACA  are  likely  to  continue,  with  unpredictable  and
uncertain results.

Further,  there  have  been  several  recent  U.S.  congressional  inquiries  and  proposed  federal  and  proposed  and  enacted  state  legislation  designed  to,  among  other
things,  bring  more  transparency  to  drug  pricing,  review  the  relationship  between  pricing  and  manufacturer  patient  programs,  reduce  the  costs  of  drugs  under
Medicare  and  reform  government  program  reimbursement  methodologies  for  drug  products.  At  the  state  level,  individual  states  are  increasingly  aggressive  in
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.

Human Capital

As of December 31, 2021, we had 137 full-time employees. Of these full-time employees, 45 have Ph.D. or M.D. degrees and 108 are engaged in research and
development activities. None of our employees are represented by labor unions or covered by collective bargaining agreements. We consider our relationship with
our employees to be good.

We are committed to attracting, retaining, developing and motivating a diverse team of highly skilled employees at all levels. The biotechnology industry is very
competitive  and  recruiting  and  retaining  such  employees  is  important  to  the  continued  success  of  our  business.  We  provide  our  employees  with  competitive
salaries and bonuses, opportunities for equity ownership, including stock-based compensation awards, and development programs that enable continued learning
and growth. We also offer comprehensive work-life benefits, including health, dental, income protection, such as life insurance and retirement savings programs.
We regularly benchmark these benefits against our industry peers to ensure we remain competitive and attractive to potential new hires. Additionally, we regularly
conduct surveys and invite employee questions and feedback to assess employee satisfaction and engagement, and enhance our understanding of the views of our
employees and company culture. In response to the COVID-19 pandemic, we increased provided resources, including a home-office stipend, to enable and support
employees to work from home full-time or part-time. Our management has continued to assess and respond to the evolving needs of our workforce throughout the
pandemic.

We strive to create a workplace that reflects the diversity of cancer patients, and where all feel included and valued because of their differences. Our commitment
to diversity, inclusion and equity begins with our management team: six of our ten members are women or from diverse racial and ethnic groups. Our Board of
Directors also reflects this commitment: four of our nine members are women and/or from a diverse racial and ethnic group.

Corporate Information

Our principal offices are located at 780 Memorial Drive, Cambridge, MA 02139, and our telephone number is (857) 259-3840.

We are an “emerging growth company” as defined in the Jumpstart Our Business Startups Act of 2012 and we will remain an emerging growth company until
December 31, 2022.

We are also a “smaller reporting company,” meaning that the market value of our stock held by non-affiliates is less than $700 million and our annual revenue was
less than $100 million during our most recently completed fiscal year. We may continue to be a smaller reporting company if either (i) the market value of our
stock held by non-affiliates is less than $250 million or (ii) our annual revenue was less than $100 million during the most recently completed fiscal year and the
market value of our stock held by non-affiliates is less than $700 million. If we are a smaller reporting company at the time we cease to be an emerging growth
company, we may continue to rely on exemptions from certain disclosure requirements that are available to smaller reporting companies. Specifically, as a smaller
reporting company we have chosen to present only the two most recent fiscal years of audited financial statements and, similar to emerging growth companies,
smaller reporting companies have reduced disclosure obligations regarding executive compensation.

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Our website address is www.jouncetx.com. Our website and the information contained on, or that can be accessed through, the website will not be deemed to be
incorporated by reference in, and are not considered part of, this Annual Report on Form 10-K. Through our website, we make available, free of charge, our annual
reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, any amendments to those reports, proxy and registration statements, and all
of our insider Section 16 reports, as soon as reasonably practicable after such material is electronically filed with, or furnished to, the Securities and Exchange
Commission, or the SEC. These SEC reports can be accessed through the “Investors & Media” section of our website. The information found on our website (or
that may be accessed through links on our website) is not part of this or any other report we file with, or furnish to, the SEC. You should not rely on any such
information in making your decision whether to purchase our common stock.

In  addition,  the  SEC  maintains  an  internet  site  that  contains  reports,  proxy  and  information  statements,  and  other  information  regarding  issuers  that  file
electronically with the SEC, including us, and any document we file may be viewed at the SEC’s internet address at http://www.sec.gov (this website address is not
intended to function as a hyperlink, and the information contained in the SEC’s website is not intended to be a part of this filing).

Our code of conduct, corporate governance guidelines and the charters of our Audit Committee, Compensation Committee, Nominating and Corporate Governance
Committee and Science and Technology Committee are available through our website at www.jouncetx.com.

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Item 1A. Risk Factors

Our business is subject to numerous risks. The following important factors, among others, could cause our actual results to differ materially from those expressed
in forward-looking statements made by us or on our behalf in this Annual Report on Form 10-K and other filings with the Securities and Exchange Commission, or
the SEC, press releases, communications with investors, and oral statements. Actual future results may differ materially from those anticipated in our forward-
looking statements. We undertake no obligation to update any forward-looking statements, whether as a result of new information, future events, or otherwise.

Risks Related to Product Development and Regulatory Process

We are early in our development efforts. If we are unable to advance our product candidates through clinical development, advance future product candidates
to clinical development or obtain marketing approval and ultimately commercialize any product candidates or experience significant delays in doing so, our
business will be materially harmed.

We  are  early  in  our  development  efforts:  JTX-8064,  vopratelimab  and  pimivalimab  are  our  clinical-stage  product  candidates,  and  future  product  candidates,
including  JTX-1484,  are  in  preclinical  or  earlier  stages  of  development.  We  have  invested  substantially  all  of  our  efforts  and  financial  resources  in  the
identification of targets and early stage, preclinical and clinical development of monoclonal antibodies, including the development of JTX-8064, vopratelimab,
pimivalimab, GS-1811 and JTX-1484.

Our  other  efforts  have  been  invested  in  early  stage,  preclinical  and  earlier  development  programs.  Our  ability  to  generate  product  revenues,  which  we  do  not
expect will occur for many years, if ever, will depend heavily on the successful development and eventual commercialization of our current and/or future product
candidates,  which  may  never  occur.  We  currently  generate  no  revenues  from  sales  of  any  products,  and  we  may  never  be  able  to  develop  or  commercialize  a
marketable product. Pursuant to our exclusive license agreement with Gilead Sciences, Inc., or Gilead, for the development, manufacture and commercialization of
GS-1811, formerly JTX-1811, we received a $25 million milestone payment in July 2021 upon receiving IND clearance for GS-1811. However, we may never
receive any additional payments from Gilead for the achievement of development, regulatory or commercial milestones, or royalties from potential future sales of
GS-1811.  Our  current  and  future  product  candidates  will  require  additional  preclinical  and  clinical  development,  management  of  clinical,  preclinical  and
manufacturing  activities,  marketing  approval  in  the  United  States  and  other  markets,  demonstrating  effectiveness  to  pricing  and  reimbursement  authorities,
obtaining  sufficient  manufacturing  supply  for  both  clinical  development  and  commercial  production,  building  of  a  commercial  organization,  and  substantial
investment and significant marketing efforts before we generate any revenues from product sales. In addition, our product development programs contemplate the
development of companion diagnostics and/or complementary diagnostics, which are assays or tests to identify an appropriate patient population. Complementary
diagnostics and companion diagnostics are subject to regulation as medical devices and, if there are no adequate companion diagnostics and/or complementary
diagnostics currently on the market for our product candidates, we may advance a diagnostic on our own. That diagnostic would have to be approved or cleared for
marketing by the FDA or comparable foreign regulatory agencies before we could commercialize it. The success of our current and future product candidates will
depend on several factors, including the following:

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successful completion of preclinical studies and advancement to clinical development of our product candidates;

acceptance of investigational new drug applications for our planned clinical trials or future clinical trials;

successful enrollment and completion of clinical trials;

demonstration of a benefit/risk profile for our current and future product candidates that is sufficient to support a successful biologics license application,
or BLA;

successful development and marketing approval and clearance of companion diagnostics and/or complementary diagnostics for use with our current and
future product candidates, if applicable;

receipt and maintenance of marketing approvals from applicable regulatory authorities;

approval by national pricing and reimbursement agencies (such as NICE, National Institute for Health Care and Excellence in the United Kingdom);

establishing agreements with third-party manufacturers for clinical supply for our clinical trials and commercial manufacturing, if our product candidates
are approved;

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

launching commercial sales of our current and future product candidates, if and when approved;

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acceptance of our product candidates, if and when approved, by patients, the medical community and third-party payors;

effectively competing with other therapies;

obtaining and maintaining healthcare coverage and adequate reimbursement;

enforcing and defending intellectual property rights and claims;

successful completion of clinical confirmatory trials to verify clinical benefit, if applicable; and

maintaining a continued acceptable safety profile of the product candidates following approval.

If we do not achieve one or more of these factors in a timely manner or at all, we could experience significant delays or an inability to successfully commercialize
our current and future product candidates, which would materially harm our business. If we do not receive marketing approvals for our current and future product
candidates, we may not be able to continue our operations.

The  ongoing  COVID-19  pandemic  has  adversely  affected,  and  may  continue  to  adversely  affect,  our  business,  including  our  clinical  trials  and  preclinical
studies.

The COVID-19 pandemic has caused many governments to implement measures to slow the spread of the outbreak through quarantines, strict travel restrictions,
heightened  border  scrutiny  and  other  measures.  The  COVID-19  pandemic  and  government  and  employer  measures  taken  in  response  have  had  a  significant
impact, both direct and indirect, on business and commerce, as supply chains have been disrupted; facilities and production have been suspended; and demand for
certain  goods  and  services,  such  as  medical  services  and  supplies,  have  increased  dramatically,  while  demand  for  other  goods  and  services,  such  as  travel,  has
fallen. The future progression of the COVID-19 pandemic and its effects on our business and operations are uncertain.

In response to the spread of COVID-19, we have reduced access to our headquarters by recommending our employees who are able to work remotely to continue
their work outside of our office. We believe the COVID-19 pandemic has had, and may continue to have, an impact on our clinical trials. For example, we have
experienced difficulty sourcing components for sample collection kits, and staffing shortages have had an impact on the pace of enrollment in our trials. As a result
of the COVID-19 pandemic, we have experienced and may in the future experience further disruptions that could severely impact our business, clinical trials and
preclinical studies, including:

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additional delays or difficulties in clinical site initiation, including difficulties in recruiting clinical site investigators and clinical site staff;

delays or difficulties in enrolling patients in our clinical trials;

interruption of key clinical trial activities, such as clinical trial site data monitoring, due to limitations on travel imposed or recommended by federal or
state  governments,  employers  and  others  or  interruption  of  clinical  trial  patient  visits  and  study  procedures  that  are  deemed  non-essential,  which  may
impact the integrity of subject data and clinical study endpoints;

delays or difficulties in developing diagnostics or conducting biomarker analysis by third-party vendors who support our clinical trials;

patients affected by COVID-19 and that the virus could impact pharmacodynamic biomarkers studied in our clinical trials and the interpretation of related
data;

diversion of healthcare resources away from the conduct of clinical trials, including the diversion of hospitals serving as our clinical trial sites and hospital
staff supporting the conduct of our clinical trials;

additional delays or difficulties in completing the analysis of or reporting results from our clinical trials;

interruption  or  delays  in  the  operations  of  the  Food  and  Drug  Administration,  or  the  FDA,  or  comparable  foreign  regulatory  authorities,  which  may
impact clinical trial timelines or approval timelines;

interruption  of,  or  delays  in  receiving,  supplies  of  our  product  candidates  and/or  supplies  used  in  the  conduct  of  our  clinical  trials  from  our  contract
manufacturing organizations due to raw materials shortages, staffing shortages, production slowdowns or stoppages, disruptions in delivery systems and
government restrictions or limitations, such as those imposed by the Defense Production Act;

interruption of or delays in the performance of contractual duties by third parties on whom we rely to conduct our clinical trials;

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limitations  on  employee  resources  that  would  otherwise  be  focused  on  the  conduct  of  our  preclinical  studies  and  clinical  trials,  including  because  of
sickness of employees or their families, the desire of employees to avoid contact with large groups of people or changes to governmental orders related to
the pandemic;

increased reliance on personnel working from home may negatively impact productivity; and

difficulties raising capital on favorable terms when needed.

The COVID-19 pandemic continues to evolve. The extent to which the COVID-19 pandemic may further impact our business, clinical trials and preclinical studies
and supply chain will depend on future developments, which are highly uncertain and cannot be predicted with confidence, such as the duration of the pandemic,
travel restrictions and social distancing in the United States and other countries, business closures or business disruptions and the effectiveness of actions taken in
the United States and other countries to contain and treat the disease.

Clinical product development involves a lengthy and expensive process, with an uncertain outcome. We will incur additional costs in connection with, and may
experience delays, in completing, or ultimately be unable to complete, the development and commercialization of our current and future product candidates,
and any companion diagnostics and/or complementary diagnostics.

The risk of failure for our product candidates at any stage of clinical or preclinical development is high. It is impossible to predict when or if our current and future
product candidates will prove effective and safe in humans and will receive marketing approval. Before obtaining marketing approval from regulatory authorities
for the sale of our product candidates, we must complete preclinical studies and then conduct extensive clinical trials to demonstrate the safety and efficacy of our
current  and  future  product  candidates  in  humans.  Clinical  testing  is  expensive,  difficult  to  design  and  implement,  can  take  many  years  to  complete  or  may  be
delayed and is uncertain as to outcome. A failure of one or more clinical trials can occur at any stage of testing. The outcome of preclinical development and
testing and early clinical trials may not be predictive of the success of later clinical trials, and interim results of a clinical trial do not necessarily predict final
results. Moreover, preclinical and clinical data are often susceptible to varying interpretations and analyses, and many companies that have believed their product
candidates performed satisfactorily in preclinical studies and clinical trials have nonetheless failed to obtain marketing approval of their product candidates. Our
preclinical studies and clinical trials may not be successful.

The FDA or comparable foreign regulatory authorities could change their position on the acceptability of our trial designs or the clinical endpoints selected, which
may require us to complete more preclinical studies or provide additional data before continuing clinical trials. In the event we are required to satisfy additional
FDA requests, the completion of our clinical trials for JTX-8064, vopratelimab and pimivalimab may be delayed. Successful completion of our clinical trials is a
prerequisite to submitting a BLA or NDA to the FDA and a Marketing Authorization Application, or MAA, in the European Union for our current and future
product candidates and, consequently, the ultimate approval and commercial marketing of our current and future product candidates. We do not know whether any
of our clinical trials will be completed on schedule, if at all.

We may experience delays in completing our preclinical studies and initiating or completing clinical trials, and we may experience numerous unforeseen events
during, or as a result of, any potential future clinical trials that could delay or prevent our ability to receive marketing approval of our current and future product
candidates, including:

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regulators, institutional review boards, or IRBs, or ethics committees may not authorize us or our investigators to commence a clinical trial or conduct a
clinical trial at a prospective trial site;

delays in reaching, or fail to reach, agreement on acceptable terms with prospective trial sites and prospective contract research organizations, or CROs;

clinical trials may produce negative or inconclusive results, and we may decide, or regulators may require us, to conduct additional preclinical studies or
clinical trials or abandon product development programs;

the number of patients required for clinical trials or to validate our biomarker-driven strategy may be larger than we anticipate;

it  may  be  difficult  to  enroll  a  sufficient  number  of  patients  with  a  predictive  biomarker  or  enrollment  in  these  clinical  trials  may  be  slower  than  we
anticipate, or participants may drop out of these clinical trials or fail to return for post-treatment follow-up at a higher rate than we anticipate;

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

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we may elect to, or regulators or IRBs or ethics committees may require that we or our investigators, suspend or terminate clinical research for various
reasons, including noncompliance with regulatory requirements or a finding that the participants are being exposed to unreasonable and significant health
risks;

the cost of clinical trials may be greater than we anticipate;

the  supply  or  quality  of  materials  or  other  materials  necessary  to  conduct  clinical  trials  may  be  insufficient  or  inadequate  due  to  supply  chain
interruptions;

competitors  may  obtain  regulatory  approval  ahead  of  us  for  products  or  antibodies  similar  to  ours,  preventing  us  from  obtaining  regulatory  approval
despite positive clinical data;

our product candidates may have undesirable side effects or other unexpected characteristics, causing us to suspend or terminate the trials, or reports may
arise from preclinical or clinical testing of other similar cancer therapies that raise safety or efficacy concerns about our product candidates; and

the FDA or other regulatory authorities may require us to submit additional data or impose other requirements before permitting us to initiate or continue
a clinical trial.

We could encounter delays if a clinical trial is suspended or terminated by us, by the IRBs of the institutions in which such trials are being conducted or ethics
committees, or by the FDA or other regulatory authorities, or recommended for suspension or termination by the data safety monitoring board for such trial. Such
authorities  or  we  may  impose  such  a  suspension  or  termination  due  to  a  number  of  factors,  including  failure  to  conduct  the  clinical  trial  in  accordance  with
regulatory requirements or our clinical protocols, inspection of the clinical trial operations or trial site by the FDA or other regulatory authorities resulting in the
imposition of a clinical hold, unforeseen safety issues or adverse side effects, including those issues or effects seen in other drugs or drug candidates in the class to
which  our  drug  candidates  belong,  failure  to  demonstrate  a  benefit  from  using  a  product,  changes  in  governmental  regulations  or  lack  of  adequate  funding  to
continue the clinical trial. Many of the factors that result in a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of
marketing approval of our product candidates. Further, regulatory authorities may disagree with our clinical trial design and our interpretation of data from clinical
trials or may change the requirements for approval even after such authorities have reviewed and commented on the design for our clinical trials.

If we are required to conduct additional clinical trials or other testing, if the results of these trials or tests are not positive or are only modestly positive or if there
are safety concerns, or if we are unable to successfully complete clinical trials or other testing of our current and future product candidates, we may:

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be delayed in obtaining marketing approval for our product candidates;

not obtain marketing approval at all;

obtain approval for indications or patient populations that are not as broad as intended or desired;

be subject to post-marketing testing requirements; or

have the product removed from the market after obtaining marketing approval.

Our product development costs will also increase if we experience delays in testing or marketing approvals. We do not know whether any of our clinical trials will
need to be restructured, will be completed on schedule, or will begin as planned, if at all. Any delays in our preclinical or future clinical development programs
may harm our business, financial condition and prospects significantly.

Our current and future product candidates may cause undesirable side effects or have other properties when used alone or in combination with other approved
pharmaceutical  products  or  investigational  new  drugs  that  could  halt  their  clinical  development,  prevent  their  marketing  approval,  limit  their  commercial
potential or result in significant negative consequences.

Although our current and future product candidates will undergo safety testing to the extent possible and, where applicable, under such conditions discussed with
regulatory  authorities,  not  all  adverse  effects  of  drugs  can  be  predicted  or  anticipated.  In  order  to  obtain  marketing  approval  of  a  product  candidate,  we  must
demonstrate safety in various non-clinical and clinical tests. At the time of initiating human clinical trials, we may not have conducted or may not conduct the
types of non-clinical testing ultimately required by regulatory authorities, or future non-clinical tests may indicate that our product candidates are not safe for use.
Non-clinical testing and clinical testing are both expensive and time-consuming and have uncertain outcomes.

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Immunotherapy, and its method of action of enabling the body’s immune system, is powerful and could lead to serious side effects that we only discover in clinical
trials. Undesirable or clinically unmanageable side effects could occur and cause us or regulatory authorities to interrupt, delay or halt clinical trials and could
result in a more restrictive label or the delay or denial of marketing approval by the FDA or comparable foreign regulatory authorities. Results of our trials could
reveal a high and unacceptable severity and prevalence of side effects or unexpected characteristics. Unforeseen side effects from our current and future product
candidates could arise either during clinical development or, if such side effects are more rare, after our current and future product candidates have been approved
by regulatory authorities and the approved product has been marketed, resulting in the exposure of additional patients. Although we have observed that each of our
clinical-stage product candidates has had an acceptable safety profile in studies to date, we cannot predict if future clinical trials of our product candidates, either
alone or in combination with other therapies, will demonstrate safety in humans. If any of our current or future product candidates fail to demonstrate safety and
efficacy in clinical trials or do not gain marketing approval, we will not be able to generate revenue and our business will be harmed.

We  cannot  predict  whether  future  safety  and  toxicology  studies  may  cause  undesirable  effects.  Success  in  initial  tests  does  not  ensure  that  later  testing  will  be
successful. Our product candidates could cause undesirable side effects similar to those toxicities observed in other immunotherapies. It remains possible that new
or more severe toxicities could be seen if any product candidate is used in combination with other agents. Such toxicities, if observed, could result in development
delays, a determination by the FDA or other regulatory authorities that additional safety testing is required, delay or denial of approval, or limit the labeling and
thus overall market scope for such future product candidate.

If unacceptable toxicities arise in the development of our current and future product candidates, we or an existing or future collaborator or licensee could suspend
or  terminate  clinical  trials,  or  the  FDA  or  comparable  foreign  regulatory  authorities  could  order  us,  a  collaborator  or  licensee  to  cease  clinical  trials  or  deny
approval of our current and future product candidates for any or all targeted indications. Treatment-related side effects could also affect patient recruitment or the
ability of enrolled subjects to complete the trial or result in potential product liability claims. In addition, these side effects may not be appropriately recognized or
managed by the treating medical staff, particularly outside of our collaborators or licensees, as toxicities resulting from cancer immunotherapies are not normally
encountered  in  the  general  patient  population  or  by  medical  personnel.  We  expect  to  have  to  train  medical  personnel  using  any  of  our  product  candidates  to
understand  the  side  effect  profile  of  such  product  candidates  for  both  our  ongoing  and  planned  clinical  trials  and  upon  commercialization  of  such  product
candidates. The inability to recognize and manage the potential side effects of our product candidates could result in patient deaths. Any of these occurrences may
prevent  us  from  achieving  or  maintaining  market  acceptance  of  the  affected  product  candidate  and  may  harm  our  business,  financial  condition  and  prospects
significantly.

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

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

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the patient eligibility criteria defined in the protocol;

the development of diagnostics and/or biomarker analysis by third parties;

our ability to identify and enroll sufficient number of patients with a predictive biomarker;

the size of the population that we must screen to identify a sufficient number of patients with a predictive biomarker;

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 trial;

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

clinicians’ and patients’ perceptions of the potential advantages of the product candidate being studied in relation to other available therapies;

our  ability  to  obtain  and  maintain  patient  consents  for  participation  in  our  clinical  trials  and,  where  appropriate,  biopsies  to  understand  our  product
candidates better and for future patient enrichment efforts; and

the risk that patients enrolled in clinical trials will drop out of the trials before completion or, because they are late-stage cancer patients, will not survive
the full terms of the clinical trials.

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In addition, our clinical trials will compete with other clinical trials for product candidates that are in the same therapeutic areas as our current and future product
candidates. This competition will reduce the number and types of patients available to us, because some patients who might have opted to enroll in our trials may
instead opt to enroll in a trial conducted by another company. 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 other companies use for trials in the same indications, which will reduce the number of patients who are available
for  our  clinical  trials  at  such  sites.  Moreover,  because  our  current  and  future  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,  rather  than  enroll  patients  in  our
ongoing or any future clinical trials.

Delays in patient enrollment may result in increased costs or may affect the timing or outcome of the planned clinical trials, which could prevent completion of
these trials and adversely affect our ability to advance the development of our current and future product candidates. This may be especially true in light of the
COVID-19  pandemic  even  though  the  FDA  issued  guidance  on  March  18,  2020,  and  subsequently  updated  it  in  2021,  to  address  the  conduct  of  clinical  trials
during  the  pandemic.  The  guidance  sets  out  a  number  of  considerations  for  sponsors  of  clinical  trials  impacted  by  the  pandemic,  including  the  requirement  to
include in the clinical study report (or as a separate document) contingency measures implemented to manage the study, and any disruption of the study as a result
of  the  COVID-19  pandemic.  Significant  clinical  trial  delays  from  the  pandemic  or  otherwise  also  could  shorten  any  periods  during  which  we  may  have  the
exclusive right to commercialize our products, allow our competitors to bring products to market before we do or impair our ability to successfully commercialize
our products, which would harm our business and results of operations.

We may not be able to conduct clinical trials in some jurisdictions outside of the United States.

We  are  currently  conducting  SELECT  outside  of  the  United  States,  and  we  may  conduct  future  trials  in  markets  outside  the  United  States.  Our  ability  to
successfully initiate, enroll and complete a clinical trial in any country outside of the United States is subject to numerous additional risks unique to conducting
business in jurisdictions outside the United States, including:  

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difficulty in establishing or managing relationships with qualified CROs, physicians and clinical trial sites;

different local standards for the conduct of clinical trials;

difficulty in complying with various and complex import laws and regulations when shipping drug to certain countries;

the potential burden of complying with a variety of laws, medical standards and regulatory requirements, including the regulation of pharmaceutical and
biotechnology products and treatments;

lack of consistency in standard of care from country to country;

diminished protection of intellectual property in some countries;

instability  in  economic  or  political  conditions,  including  inflation,  recession  and  actual  or  anticipated  military  conflicts,  social  upheaval  or  political
uncertainty;

foreign exchange fluctuations;

cultural differences in medical practice and clinical research; and

changes in country or regional regulatory requirements.

Additionally,  of  our  sixty-seven  active  sites  in  SELECT,  fourteen  are  located  in  Ukraine,  seventeen  are  located  in  Russia,  and  additional  sites  are  located  in
neighboring countries. The escalation of tensions in the region, including Russia’s February 2022 invasion of Ukraine and the resulting imposition of economic
and other sanctions by the United States, European Union and many other nations on Russia, individuals in Russia, Russian businesses and the Russian central
bank, could disrupt or delay our ability to conduct clinical trial activities, including the evaluation of safety or efficacy data. Although the length and impact of any
military action are highly unpredictable, clinical trial sites in Ukraine and other countries may close, and patients could be forced to evacuate or voluntarily choose
to relocate far from clinical trial sites, making them unavailable for further dosing or follow-up. The closure of sites, the inability to screen and enroll new patients
or any premature discontinuation of treatment by patients already enrolled in our trial could result in the need to enroll additional patients, which would be costly
and could delay our anticipated timeline for the completion of the trial. There may also be an impact on the health and safety of our patients, including an increase
in the number and severity of adverse events, due to living in a conflict zone and limited or no access to hospitals or healthcare. Airport closures will delay the
shipping and processing of trial supplies and patient samples. As a result, there may be delays in treatment or response assessments that could adversely affect the
ability to conduct the SELECT trial on the timeline we originally anticipated, the completeness of data and the trial results for SELECT. Any disruptions arising
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the invasion of Ukraine could increase the cost of conducting the trial, which could have a material impact on our financial condition.

Furthermore, the COVID-19 pandemic may also have an impact on our ability to successfully conduct trials outside of the United States. For example, we are
conducting SELECT in countries where clinical trial site staff have been diverted to care for COVID-19 patients and where regulatory authorities are short staffed
due to the COVID-19 pandemic, and this has impacted enrollment in these countries. If we have difficulty conducting our clinical trials in jurisdictions outside the
United States as planned, we may need to delay, limit or terminate ongoing or planned clinical trials, any of which could have a material adverse effect on our
business.

We are currently conducting SELECT outside the United States and may conduct future clinical trials for our product candidates at sites outside the United
States, and the FDA may not accept data from trials conducted in such locations or the complexity of regulatory burdens may otherwise adversely impact us.

Although the FDA may accept data from clinical trials conducted outside the United States, acceptance of these data is subject to certain conditions imposed by the
FDA. For example, the clinical trial must be well designed and conducted and performed by qualified investigators in accordance with good clinical practices, or
GCPs, and the FDA must be able to validate the data from the trial through an onsite inspection, if necessary. Generally, the patient population for any clinical
trials conducted outside the United States must be representative of the population for which we intend to seek approval in the United States. In addition, while
these clinical trials are subject to the applicable local laws, FDA acceptance of the data will be dependent upon its determination that the trials also complied with
all applicable U.S. laws and regulations. Nonetheless, there can be no assurance that the FDA will accept data from trials conducted outside the United States. If
the FDA does not accept the data from any trial that we conduct outside the United States, it would likely result in the need for additional clinical trials, which
would  be  costly  and  time-consuming  and  delay  or  permanently  halt  our  development  of  any  applicable  product  candidates.  Furthermore,  certain  jurisdictions
require data from trials conducted in their country in order to obtain approval in that country.

We rely on our Translational Science Platform to identify and develop product candidates. Our competitive position could be materially harmed if our
competitors develop a platform similar to our Translational Science Platform and develop rival product candidates.

We rely on unpatented know-how, inventions and other proprietary information, to maintain our competitive position. We consider know-how to be our primary
intellectual property with respect to our Translational Science Platform. Know-how can be difficult to protect. In particular, we anticipate that with respect to this
platform, this know-how may over time be disseminated within the industry through independent development, the publication of journal articles describing the
methodology, and the movement of skilled personnel.

We  cannot  rule  out  that  our  competitors  may  have  or  obtain  the  knowledge  necessary  to  analyze  and  characterize  tumors  for  the  purpose  of  identifying  and
developing  products  that  could  compete  with  the  product  candidates  we  develop.  Our  competitors  may  also  have  significantly  greater  financial,  product
development, technical, and human resources and access to other human tumors than we do and may have significantly greater experience in using translational
science methodology to identify and develop product candidates.

We may not be able to prohibit our competitors from using translational science methods to develop product candidates, including such methods that are the same
as or similar to our own. If our competitors use translational science methods to identify and develop products that compete with our current and future product
candidates, our ability to develop and market a promising product or product candidate may diminish substantially, which could have a material adverse effect on
our business prospects, financial condition, and results of operations.

Even if we complete the necessary preclinical studies and clinical trials, the marketing approval process is expensive, time consuming and uncertain and may
prevent us or any of our existing or future collaborators or licensees from obtaining approvals for the commercialization of our current and future product
candidates.

Our product candidates and the activities associated with their development and commercialization, including research, testing, manufacturing, labeling, approval
and license maintenance, selling, import and export, marketing and distribution are subject to extensive regulation by the FDA and comparable foreign regulatory
authorities. Neither we nor any existing or future collaborator or licensee is permitted to market any future product in the United States until we receive approval
of a BLA from the FDA. We have never submitted an application for, or received, marketing approval. Obtaining approval of a BLA can be a lengthy, expensive
and  uncertain  process.  Even  if  we  believe  the  preclinical  or  clinical  data  for  our  current  and  future  product  candidates  are  promising,  such  data  may  not  be
sufficient to support approval by the FDA and comparable foreign regulatory authorities.

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Marketing approval of a BLA is not guaranteed, and the approval process is expensive and may take several years. The FDA also has substantial discretion in the
approval process. Despite the time and expense exerted, failure can occur at any stage, and we could encounter problems that cause us to abandon or repeat clinical
trials or perform additional preclinical studies and clinical trials. The number of preclinical studies and clinical trials that will be required for FDA approval varies
depending  on  the  product  candidate,  the  disease  or  condition  that  the  product  candidate  is  designed  to  address  and  the  regulations  applicable  to  any  particular
product candidate. In addition, varying interpretations of the data obtained from preclinical and clinical testing could delay, limit or deny approval of a product
candidate,  or  we  may  experience  delays  or  rejections  based  upon  government  regulation  or  changes  in  regulatory  agency  policy  during  the  period  of  product
development.  Regulatory  agencies  also  may  impose  significant  limitations  in  the  form  of  narrow  indications,  warnings,  precautions  or  contraindications  with
respect to conditions of use or may grant approval subject to the performance of costly post-marketing clinical trials. Regulatory agencies or third-party payors
may not approve the price we intend to charge for our future products. Any of the foregoing scenarios could materially harm the commercial prospects for our
current and future product candidates.

If our current and future product candidates fail to demonstrate safety and efficacy in clinical trials or do not gain marketing approval, our business will be harmed.

We may seek a Breakthrough Therapy Designation or Fast Track Designation by the FDA for our current and future product candidates, and we may be
unsuccessful. If we are successful, the designation may not actually lead to a faster development or regulatory review or approval process, and it does not
increase the likelihood that our current and future product candidates will receive marketing approval.

We may seek a Breakthrough Therapy Designation or Fast Track Designation for our current and future product candidates. A breakthrough therapy is defined as a
drug that is intended, alone or in combination with one or more other drugs, to treat a serious or life-threatening disease or condition, and preliminary clinical
evidence indicates that the drug may demonstrate substantial improvement over currently approved therapies on one or more clinically significant endpoints, such
as substantial treatment effects observed early in clinical development. Fast Track Designation may be available if a product is intended for the treatment of a
serious  or  life-threatening  condition,  and  preclinical  or  clinical  data  demonstrate  the  potential  to  address  an  unmet  medical  need  for  this  condition.  Drugs  that
receive Breakthrough Therapy Designation or Fast Track Designation by the FDA are eligible for accelerated approval and priority review.

The FDA has broad discretion whether or not to grant Breakthrough Therapy Designation or Fast Track Designation. Even if we receive Breakthrough Therapy
Designation or Fast Track Designation for a product candidate, such designation may not result in a faster development process, review or approval compared to
conventional  FDA  procedures  and  does  not  assure  ultimate  approval  by  the  FDA.  In  addition,  even  if  one  of  our  current  or  future  product  candidates  receives
Breakthrough Therapy Designation or Fast Track Designation, the FDA may later decide that the drugs no longer meet the conditions for qualification and rescind
the designation.

We may seek Orphan Drug Designation for our current and future product candidates, and we may be unsuccessful or may be unable to maintain the benefits
associated with Orphan Drug Designation, including the potential for market exclusivity.

As part of our business strategy, we may seek Orphan Drug Designation for our current and future product candidates, and we may be unsuccessful. In the United
States, Orphan Drug Designation entitles a party to financial incentives such as opportunities for grant funding towards clinical trial costs, tax advantages and user-
fee waivers.

In Europe, Orphan Drug Designation entitles a party to a number of incentives, such as protocol assistance and scientific advice specifically for designated orphan
medicines, and potential fee reductions depending on the status of the sponsor.

Generally, if a drug with an Orphan Drug Designation subsequently receives the first marketing approval for the indication for which it has such designation, the
drug is entitled to a period of marketing exclusivity, which precludes the European Medicines Agency or the FDA from approving another marketing application
for the same drug and indication for a set time period, except in limited circumstances.

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Even  if  we  obtain  orphan  drug  exclusivity  for  a  drug,  that  exclusivity  may  not  effectively  protect  the  drug  from  competition  because  different  drugs  can  be
approved for the same condition, or the drug may be used off-label. Even after an orphan drug is approved, the FDA can subsequently approve another drug for the
same condition if the FDA concludes that the other drug is clinically superior because it is shown to be safer, to be more effective or to make a major contribution
to patient care. In addition, a designated orphan drug may not receive orphan drug exclusivity if it is approved for a use that is broader than the indication for
which  it  received  orphan  designation.  Moreover,  orphan  drug  exclusive  marketing  rights  in  the  United  States  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 quantity of the drug to meet the needs of patients with the rare
disease or condition. Orphan Drug Designation neither shortens the development time or regulatory review time of a drug nor gives the drug any advantage in the
regulatory review or approval process. While we may seek Orphan Drug Designation for applicable indications for our current and future product candidates, we
may never receive such designations. Even if we do receive such designations, there is no guarantee that we will enjoy the benefits of those designations.

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The  FDA  may  further  reevaluate  the  Orphan  Drug  Act  and  its  regulations  and  policies.  This  may  be  particularly  true  in  light  of  a  decision  from  the  Court  of
Appeals for the 11  Circuit in September 2021 finding that, for the purpose of determining the scope of exclusivity, the term “same disease or condition” means
the designated “rare disease or condition” and could not be interpreted by the Agency to mean the “indication or use.” We do not know if, when, or how the FDA
may change the orphan drug regulations and policies in the future, and it is uncertain how any changes might affect our business. Depending on what changes the
FDA may make to its orphan drug regulations and policies, our business could be adversely impacted.

We may choose not to develop a potential product candidate, or we may suspend or terminate one or more discovery or preclinical programs or our product
candidates.

At any time and for any reason, we may determine that one or more of our discovery programs, preclinical programs or product candidates does not have sufficient
potential  to  warrant  the  allocation  of  resources  toward  such  program  or  product  candidate.  Furthermore,  because  we  have  limited  financial  and  personnel
resources, we have placed significant focus on the development of our product candidates JTX-8064, vopratelimab and pimivalimab. Accordingly, we may choose
not to develop a product candidate or elect to suspend or terminate one or more of our discovery or preclinical programs. If we suspend or terminate a program or
product candidate in which we have invested significant resources, we will have expended resources on a program or product candidate that will not provide a full
return on our investment. As a result, we may have missed an opportunity to have allocated those resources to potentially more productive uses, including existing
or future programs or product candidates. If we do not accurately evaluate the commercial potential or target market for a particular future product candidate, we
may relinquish valuable rights to future product candidates through collaboration, licensing or other royalty arrangements.

Obtaining and maintaining marketing approval of our current or future product candidates in one jurisdiction does not mean that we will be successful in
obtaining marketing approval of that product candidate in other jurisdictions.

Obtaining and maintaining marketing approval of our current and future product candidates in one jurisdiction does not guarantee that we will be able to obtain or
maintain marketing approval in any other jurisdiction. For example, even if the FDA grants marketing approval of a product candidate, comparable regulatory
authorities  in  foreign  jurisdictions  must  also  approve  the  manufacturing,  marketing  and  promotion  of  the  product  candidate  in  those  countries.  Approval
procedures vary among jurisdictions and can involve requirements and administrative review periods different from, and greater than, those in the United States,
including additional preclinical studies or clinical trials.

Obtaining  foreign  marketing  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  current  and  future  product
candidates will be harmed. Even if we obtain approval for our product candidates and ultimately commercialize them in foreign markets, we would be subject to
separate risks and uncertainties, including the burden of complying with complex and changing foreign regulatory, tax, accounting and legal requirements and the
reduced protection of intellectual property rights in some foreign countries.

Our failure to successfully identify, discover, acquire, develop or commercialize additional products or product candidates could impair our ability to grow.

Although  a  substantial  amount  of  our  efforts  will  focus  on  the  clinical  testing  and  potential  approval  of  our  most  advanced  product  candidates,  JTX-8064,
vopratelimab  and  pimivalimab,  an  element  of  our  long-term  growth  strategy  is  to  in-license  products  or  product  candidates  for  development  and
commercialization.  We  may  never  be  able  to  identify,  discover,  acquire,  develop  or  commercialize  any  products  or  product  candidates,  which  would  have  a
material adverse effect on our business.

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Because our internal research capabilities are limited, we may be dependent upon pharmaceutical and biotechnology companies, academic scientists, and other
researchers to sell or license products or technology to us. The success of this strategy depends partly upon our ability to identify, select, and acquire promising
pharmaceutical  product  candidates  and  products.  The  process  of  proposing,  negotiating  and  implementing  a  license  or  acquisition  of  a  product  candidate  or
approved product is lengthy and complex. Other companies, including some with substantially greater financial, marketing and sales resources, may compete with
us for the license or acquisition of product candidates and approved products. Acquisitions and in-licenses include numerous risks, including potential failure to
achieve the expected benefits of the acquisition or license and potential unknown liabilities associated with the product or technology. We have limited resources to
identify and execute the acquisition or in-licensing of third-party products, businesses, and technologies, integrate them into our current infrastructure and manage
our development efforts.

Even  if  we  receive  marketing  approval  of  our  current  or  future  product  candidates,  we  will  be  subject  to  ongoing  regulatory  obligations  and  continued
regulatory review.

Any marketing approvals that we receive for our current and future product candidates may be subject to limitations on the approved indicated uses for which the
product may be marketed or the conditions of approval or contain requirements for potentially costly post-market testing and surveillance to monitor the safety and
efficacy of the product candidate. In addition, if the FDA or a comparable foreign regulatory authority approves any of our current or future product candidates, the
manufacturing processes, labeling, packaging, distribution, adverse event reporting, storage, advertising, promotion, import and export and record keeping for our
current  and  future  product  candidates  will  be  subject  to  extensive  and  ongoing  regulatory  requirements.  These  requirements  include  submissions  of  safety  and
other post-marketing information and reports, registration, as well as continued compliance with current good manufacturing practice, or cGMP, and GCPs for any
clinical trials that we conduct post-approval. Failure to comply with regulatory requirements, may result in, among other things:

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

fines, untitled and warning letters, or holds on clinical trials;

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

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.

We cannot predict the likelihood, nature or extent of government regulation that may arise from future legislation or administrative action, either in the United
States 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.

Risks Related to Manufacturing, Commercialization and Reliance on Third Parties

We rely and expect to continue to rely on third parties to conduct our clinical trials. If these third parties do not successfully carry out their contractual duties,
comply  with  regulatory  requirements  or  meet  expected  deadlines,  we  may  not  be  able  to  obtain  marketing  approval  for  or  commercialize  our  product
candidates and our business could be substantially harmed.

We do not have the ability to independently conduct clinical trials. We rely and will rely on medical institutions, clinical investigators, contract laboratories, and
other third parties, such as CROs, to conduct or otherwise support our ongoing clinical trials, including processing of human blood and tumor samples and analysis
of biomarkers from the clinical trials. We rely and will rely heavily on these parties for execution of clinical trials for our current and future product candidates,
and we control only certain aspects of their activities. Nevertheless, we are responsible for ensuring that each of our clinical trials is conducted in accordance with
the applicable protocol, legal and regulatory requirements and scientific standards, and our reliance on these third parties including CROs will not relieve us of our
regulatory responsibilities. For any violations of laws and regulations during the conduct of our clinical trials, we could be subject to untitled and warning letters or
enforcement action that may include civil and criminal penalties up to and including criminal prosecution.

We and our clinical investigators and CROs are required to comply with regulations and requirements, including GCP, for conducting, monitoring, recording and
reporting the results of clinical trials to ensure that the data and results are scientifically credible and accurate, and that the trial patients are adequately informed of
the potential risks of participating in clinical trials and their rights are protected. If we or our clinical investigators or CROs fail to comply with applicable GCP, the
clinical  data  generated  in  our  clinical  trials  may  be  deemed  unreliable,  and  the  FDA  or  comparable  foreign  regulatory  authorities  may  require  us  to  perform
additional clinical trials before approving our marketing applications. We cannot assure stockholders that, upon inspection, the FDA will determine that any of our
current or future clinical trials will comply with GCP. In addition, our

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clinical trials must be conducted with product candidates produced under cGMP regulations. Our failure or the failure of our clinical investigators or CROs to
comply with these regulations may require us to repeat clinical trials, which would delay the marketing approval process and could also subject us to enforcement
action. We also are required to register certain ongoing clinical trials and provide certain information, including information relating to the trial’s protocol, on a
government-sponsored  database,  ClinicalTrials.gov,  within  specific  time  frames.  Failure  to  do  so  can  result  in  fines,  adverse  publicity  and  civil  and  criminal
sanctions.

Although we designed the clinical trials for JTX-8064, vopratelimab and pimivalimab and intend to design the clinical trials for future product candidates, clinical
investigators or CROs will conduct all of the clinical trials. As a result, many important aspects of our development programs, including their conduct and timing,
will  be  outside  of  our  direct  control.  Our  reliance  on  third  parties  to  conduct  clinical  trials  will  also  result  in  less  direct  control  over  the  management  of  data
developed through clinical trials than would be the case if we were relying entirely upon our own staff. Communicating with outside parties can be challenging,
potentially leading to mistakes as well as difficulties in coordinating activities. Outside parties may also face internal challenges that may materially adversely
affect the willingness or ability of such parties to conduct our clinical trials and may subject us to unexpected cost increases that are beyond our control. If the
clinical investigators or CROs do not perform clinical trials in a satisfactory manner, breach their obligations to us or fail to comply with regulatory requirements,
the development, marketing approval and commercialization of our current and future product candidates may be delayed, or our development programs may be
materially  and  irreversibly  harmed.  If  we  are  unable  to  rely  on  clinical  data  collected  by  our  clinical  investigators  and  CROs,  we  could  be  required  to  repeat,
extend the duration of, or increase the size of any clinical trials we conduct, and this could significantly delay commercialization and require significantly greater
expenditures.

If clinical investigators or CROs do not successfully carry out their contractual duties or obligations or meet expected deadlines, if they need to be replaced or if
the quality or accuracy of the clinical data they obtain are compromised due to the failure to adhere to our clinical protocols, regulatory requirements or for other
reasons, any clinical trials such clinical investigators or CROs are associated with may be extended, delayed or terminated. For example, in EMERGE, due to a site
error, we enrolled additional patients to achieve the number of patients required for our statistical analysis. If our clinical trials are extended, delayed or terminated,
we believe that our financial results and the commercial prospects for our current and future product candidates in the subject indication would be harmed, our
costs could increase and our ability to generate revenue could be delayed.

Furthermore,  if  clinical  investigators  or  CROs  continue  to  experience  adverse  impacts  from  the  COVID-19  pandemic  or  experience  adverse  impacts  from  the
conflict in Ukraine and surrounding region, including facility closures, staffing shortages, travel restrictions, prioritization of healthcare resources toward pandemic
or relief efforts, our clinical development efforts and plans for data disclosures may be delayed.

Because  we  rely  on  third-party  manufacturing  and  supply  partners,  including  a  single  supplier  for  some  of  our  materials,  our  supply  of  research  and
development, preclinical and clinical development materials may become limited or interrupted or may not be of satisfactory quantity or quality.

We  rely  on  third-party  contract  manufacturers  to  manufacture  our  preclinical  and  clinical  trial  product  supplies.  We  do  not  own  manufacturing  facilities  for
producing such supplies. There can be no assurance that our preclinical and clinical development product supplies will not be limited, interrupted, or of satisfactory
quality or continue to be available at acceptable prices. Our or a third party’s failure to execute on our manufacturing requirements, or to do so on commercially
reasonable terms and comply with cGMP could adversely affect our business in a number of ways, including:

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•

•

•

•

an inability to initiate or continue clinical trials of our current or future product candidates under development;

delay in submitting regulatory applications, or receiving marketing approvals, for our current or future product candidates;

loss of cooperation of an existing or future collaborator;

subjecting third-party manufacturing facilities or our manufacturing facilities to additional inspections by regulatory authorities; and

requirements to cease distribution or to recall batches of our current or future product candidates.

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In  the  event  that  any  of  our  manufacturers  fails  to  comply  with  applicable  regulatory  requirements  and  facility  and  process  validation  tests  or  to  perform  its
obligations to us in relation to quality, timing or otherwise, or if our supply of components or other materials becomes limited or interrupted for other reasons, we
may be forced to manufacture the materials ourselves, for which we currently do not have the capabilities or resources, or enter into an agreement with another
third party, which we may not be able to do on reasonable terms, if at all. In some cases, the technical skills or technology required to manufacture our future
product candidates may be unique or proprietary to the original manufacturer, which would increase our reliance on such manufacturer or require us to obtain a
license from such manufacturer in order to have another third party manufacture such future product candidates. In particular, any replacement of our manufacturer
could require significant effort and expertise because there may be a limited number of qualified replacements. If we are required to change manufacturers for any
reason,  we  will  be  required  to  verify  that  the  new  manufacturer  maintains  facilities  and  procedures  that  comply  with  quality  standards  and  with  all  applicable
regulations and guidelines, which could negatively affect our ability to develop product candidates in a timely manner or within budget.

Certain raw materials necessary for the manufacture of our product candidates under our current manufacturing process, such as growth media, resins and filters,
are available from a single supplier. We do not have agreements in place that guarantee our supply or the price of these raw materials. Any significant delay in the
acquisition or decrease in the availability of these raw materials could considerably delay the manufacture of our current and future product candidates, which
could adversely impact the timing of any planned trials or the marketing approval of that product candidate.

If any of our third-party manufacturing and supply partners experience adverse impacts from the conflict in Ukraine and surrounding region or the COVID-19
pandemic, including shutdowns, staffing shortages, production slowdowns, disruptions in delivery systems or government restrictions or limitations, our supply
chain may be disrupted. For example, one of our pharmaceutical manufacturing partners has advised us of restrictions on shipments to Ukraine and Russia and has
suspended  certain  operations  in  Ukraine.  Additionally,  third  parties  could  be  required  to  allocate  resources  in  a  way  that  impacts  our  operations.  Due  to  the
COVID-19 pandemic and under the Defense Production Act, the U.S. government may, among other things, require domestic industries to provide essential goods
and services needed for the national defense, such as drug material or other supplies needed to diagnose or treat COVID-19 patients. These impacts may limit our
ability to conduct our clinical trials, continue our research and development operations, and manufacture our product candidates for our clinical trials.

We expect to continue to rely on third-party manufacturers if we receive marketing approval for any product candidate. If we are unable to obtain or maintain
third-party  manufacturing  for  our  current  and  future  product  candidates,  or  to  do  so  on  commercially  reasonable  terms,  we  may  not  be  able  to  develop  and
commercialize  our  current  or  future  product  candidates  successfully.  We  do  not  yet  have  sufficient  information  to  reliably  estimate  the  cost  of  the  commercial
manufacture of any future product candidate.

In addition, in order to conduct clinical trials of our current and future product candidates, we will need to work with third-party manufacturers to manufacture
them  in  large  quantities.  Our  manufacturing  partners  or  our  third-party  collaborators  may  be  unable  to  successfully  increase  the  manufacturing  capacity  of  our
current  and  future  product  candidates  in  a  timely  or  cost-effective  manner,  or  at  all,  and  labor  and  material  shortages  due  to  the  COVID-19  pandemic  have
adversely  impacted  the  manufacturing  capacity  of  our  third-party  manufacturers.  In  addition,  quality  issues  may  arise  during  scale-up  activities.  If  our
manufacturing partners or collaborators are unable to successfully scale up the manufacture of our current or future product candidates in sufficient quality and
quantity, the development, testing, and clinical trials of that product candidate may be delayed or infeasible, and marketing approval or commercial launch of any
resulting product may be delayed or not obtained, which could significantly harm our business.

We expect to develop our current and future product candidates in combination with other drugs. If we are unable to enter into a strategic collaboration for, or
if  we  are  unable  to  purchase  on  commercially  reasonable  terms,  an  approved  or  investigational  cancer  drug  to  use  in  combination  with  our  product
candidates, we may be unable to develop or obtain approval for our current and future product candidates in combination with other drugs.

We intend to develop our current and future product candidates in combination with one or more other cancer drugs. If the FDA or similar regulatory authorities
outside of the United States revoke or do not grant approval of any drugs we use in combination with our current or future product candidates, we will not be able
to market any products in combination with such drugs.

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If safety or efficacy issues arise with any of these drugs, we could experience significant regulatory delays, and the FDA or similar regulatory authorities outside of
the United States may require us to redesign or terminate the applicable clinical trials. If the drugs we use are replaced as the standard of care for the indications we
choose for our current or future product candidates, the FDA or similar regulatory authorities outside of the United States may require us to conduct additional
clinical trials. In addition, if manufacturing or other issues result in a shortage of supply of the drugs with which we determine to combine with our current or
future  product  candidates,  we  may  not  be  able  to  complete  clinical  development  of  JTX-8064,  vopratelimab,  pimivalimab  or  future  product  candidates  on  our
current timeline or at all.

Even if our current or future product candidates were to receive marketing approval or be commercialized for use in combination with other existing drugs, we
would continue to be subject to the risks that the FDA or similar regulatory authorities outside of the United States could revoke approval of such existing drugs or
that safety, efficacy, manufacturing or supply issues could arise with such drugs.

We may form or seek strategic collaborations to evaluate and, if approved, market our product candidates in combination with another approved or investigational
cancer drug. If we are unable to enter into a strategic collaboration on commercially reasonable terms or fail to realize the benefits of any such collaboration, we
may  be  required  to  purchase  an  approved  cancer  drug  to  use  in  combination  with  JTX-8064,  vopratelimab  and/or  pimivalimab.  The  failure  to  enter  into  a
successful collaboration or the expense of purchasing an approved cancer drug may delay our development timelines, increase our costs and jeopardize our ability
to develop our product candidates.

We are subject to manufacturing risks that could substantially increase our costs and limit the supply of our products.

The process of manufacturing JTX-8064, vopratelimab and pimivalimab or future product candidates is complex, highly regulated and subject to several risks,
including:

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•

•

•

Any  changes  in  our  manufacturing  processes  as  a  result  of  scaling-up  may  require  additional  approvals  or  may  delay  the  development  and  marketing
approval of our current and future product candidates and ultimately affect our success.

The third-party manufacturing facilities in which our current and future product candidates are made could be adversely affected by equipment failures,
contamination, vendor error, labor shortages, the COVID-19 pandemic, natural disasters, power failures and numerous other factors.

Any adverse developments affecting manufacturing operations for our current or future product candidates, if any are approved, may result in shipment
delays, inventory shortages, lot failures, product withdrawals or recalls, or other interruptions in the supply of our products. We may also have to take
inventory write-offs and incur other charges and expenses for products that fail to meet specifications, undertake costly remediation efforts or seek more
costly manufacturing alternatives.

Biologics, such as JTX-8064, vopratelimab and pimivalimab, that have been produced and are stored for later use may degrade, become contaminated,
suffer other quality defects or may not be used within their shelf life, which may cause the affected product candidates to no longer be suitable for their
intended use in clinical trials or other development activities. If the defective product candidates cannot be replaced in a timely fashion, we may incur
significant delays in our development programs that could adversely affect the value of such product candidates.

We face significant competition and if our competitors develop and market products that are more effective, safer or less expensive than any of our current or
future product candidates, our commercial opportunities will be negatively impacted.

The  life  sciences  industry  is  highly  competitive  and  subject  to  rapid  and  significant  technological  change.  We  are  currently  developing  therapeutics  that  will
compete with other products and therapies that currently exist or are being developed, such as approved immunotherapy antibodies, the anti-ILT4 antibodies of
Merck & Co., Inc. and Immune-Onc Therapeutics, Inc., the dual antagonist anti-ILT4/ILT2 antibody of NGM Biopharmaceuticals, Inc., the anti-ICOS antibodies
of Bristol Myers Squibb, GlaxoSmithKline plc, or Sanofi S.A., Xencor, Inc.’s anti-PD-1 and anti-ICOS bispecific antibody, or the anti-ILT3 (LILRB4) antibodies
of  Merck  &  Co.,  Inc.,  Immune-Onc  Therapeutics,  Inc.  and  NGM  Biopharmaceuticals,  Inc.  Products  we  may  develop  in  the  future  are  also  likely  to  face
competition from other products and therapies, some of which we may not currently be aware. Technological advances or products developed by our competitors
may render our technologies or product candidates obsolete, less competitive or not economical.

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We have both domestic and international competitors, including major multinational pharmaceutical companies, established biotechnology companies, specialty
pharmaceutical  companies,  universities  and  other  research  institutions  and  small  and  other  early-stage  companies.  Many  of  our  competitors  have  significantly
greater financial, manufacturing, marketing, product development, technical and human resources than we do. Large pharmaceutical companies, in particular, have
extensive  experience  in  clinical  testing,  obtaining  marketing  approvals,  establishing  clinical  trial  sites,  recruiting  patients  and  in  manufacturing  pharmaceutical
products and may succeed in discovering, developing and commercializing products in our field before we do. Currently, Merck & Co., Inc. is conducting Phase 2
trials of its anti-ILT4 antibody and, given its resources, Merck will likely be able to develop its product candidate faster than we are able to develop JTX-8064. We
also  face  competition  in  recruiting  and  retaining  qualified  scientific  and  management  personnel,  as  well  as  in  acquiring  technologies  complementary  to,  or
necessary for, our programs.

There are a large number of companies developing or marketing treatments for cancer, including many major pharmaceutical and biotechnology companies. These
treatments  consist  both  of  small  molecule  drug  products,  as  well  as  biologics,  as  approaches  to  address  cancer.  These  treatments  are  often  combined  with  one
another in an attempt to maximize the response rate and clinical benefit.

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, have a broader label, are marketed more effectively, are reimbursed or are less expensive than any products that we
may  develop.  Our  competitors  also  may  obtain  FDA,  European  Commission  or  other  marketing  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. Even if our current and future
product candidates achieve marketing approval, they may be priced at a significant premium over competitive products, resulting in reduced competitiveness. In
addition, if any of our current or future product candidates are approved by the FDA, the approval of a biosimilar product to one of our products could have a
material impact on our business.

We  will  depend  on  Gilead  to  develop,  manufacture  and  commercialize  GS-1811  and  may  depend  on  additional  third  parties  for  the  development  and
commercialization of our other product candidate programs. If these programs are not successful, we may not receive significant payments from such third
parties or we may not be able to capitalize on the market potential of these product candidates.

In  August  2020,  we  entered  into  a  License  Agreement,  or  the  Gilead  License  Agreement,  with  Gilead  pursuant  to  which  we  granted  Gilead  an  exclusive,
worldwide license to develop, manufacture and commercialize GS-1811. The Gilead License Agreement provides for potential payments to us from Gilead upon
the achievement of specified development, regulatory and sales milestones, and potential royalty-based revenue if GS-1811 is successfully commercialized. In July
2021, we received a milestone payment upon IND clearance of GS-1811. As a result of this license, we will not control the nature, timing or cost of bringing GS-
1811 to market. We cannot provide any assurance with respect to the success of the license, and we may never receive any additional milestone or any royalty
payments pursuant to the Gilead License Agreement.

We may form or seek other strategic alliances, joint ventures, or collaborations, or enter into additional licensing arrangements with third parties that we believe
will complement or augment our development and commercialization efforts with respect to our current and future product candidates that we may develop.

Collaborations and other strategic transactions, including licensing arrangements, involving our product candidates pose the following risks to us:

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•

Collaborators,  including  licensors,  have  significant  discretion  in  determining  the  efforts  and  resources  that  they  will  apply  to  these  collaborations.  For
example, development and commercialization plans and strategies for GS-1811 are conducted solely by Gilead.

Collaborators  may  not  pursue  development  and  commercialization  of  any  of  our  current  or  future  product  candidates  or  may  elect  not  to  continue  or
renew development or commercialization programs based on clinical trial results, changes in their strategic focus due to the acquisition of competitive
products, availability of funding or other external factors such as a business combination that diverts resources or creates competing priorities.

Collaborators may delay clinical trials, provide insufficient funding for a clinical trial program, stop a clinical trial, abandon a product candidate, repeat or
conduct new clinical trials or require a new formulation of a product candidate for clinical testing.

Collaborators  could  independently  develop,  or  develop  with  third  parties,  products  that  compete  directly  or  indirectly  with  our  products  or  product
candidates.

A collaborator with marketing and distribution rights to one or more products may not commit sufficient resources to their marketing and distribution.

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•

Collaborators may in-license, own or co-own intellectual property covering our products that results from our collaborating with them, and in such cases,
we would not have the exclusive right to develop, commercialize, enforce, maintain or defend such intellectual property. For example, Gilead has the first
right to enforce, maintain or defend our intellectual property rights for GS-1811 under the Gilead License Agreement.

Collaborators may not properly enforce, maintain or defend our intellectual property rights or may use our proprietary information in a way that gives rise
to actual or threatened litigation that could jeopardize or invalidate our intellectual property or proprietary information or expose us to potential litigation,
or other intellectual property proceedings.

Disputes may arise between a collaborator and us that cause the delay or termination of the research, development or commercialization of our current
and future product candidates, or that result in costly litigation or arbitration that diverts management attention and resources.

Collaborations may be terminated and, if terminated, may result in a need for additional capital to pursue further development or commercialization of the
applicable product candidates.

Collaboration agreements may not lead to development or commercialization of product candidates in the most efficient manner or at all.

Collaboration or licensing agreements may restrict our right to independently pursue new product candidates.

As a result, if we enter into additional collaboration agreements and strategic partnerships or license our intellectual property, products or businesses, we may not
be able to realize the benefit of, or generate revenues from, such arrangements.

All  of  the  risks  relating  to  product  development,  regulatory  approval  and  commercialization  described  in  this  Annual  Report  on  Form  10-K  also  apply  to  the
activities  of  Gilead  with  respect  to  the  development  and  commercialization  of  GS-1811  and  would  also  apply  to  the  activities  of  any  future  licensees  or
collaborators.

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

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

We  face  significant  competition  in  seeking  appropriate  strategic  partners  and  the  negotiation  process  is  time  consuming  and  complex.  Whether  we  reach  a
definitive agreement for other collaborations will depend, among other things, upon our assessment of the collaborator’s resources and expertise, the terms and
conditions of the proposed collaboration and the proposed collaborator’s evaluation of our business. We may not be successful in our efforts to establish a strategic
partnership  or  other  alternative  arrangements  for  future  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  them  as  having  the  requisite  potential  to  demonstrate  safety  and  efficacy.  In  addition,  there  have  been  a
significant  number  of  recent  business  combinations  among  large  pharmaceutical  companies  that  have  resulted  in  a  reduced  number  of  potential  future
collaborators.

We may also be restricted under existing agreements from entering into future agreements on certain terms with potential collaborators. For example, under the
Gilead License Agreement, we have granted worldwide exclusive rights to Gilead for any antibody or other agent that is specifically directed to CCR8, and this
exclusivity would limit our ability to enter into future strategic collaborations with other partners relating to CCR8.

We may not be able to negotiate collaborations on a timely basis, on acceptable terms, or at all. If we are unable to do so, we may have to curtail the development
of  the  product  candidate  for  which  we  are  seeking  to  collaborate,  reduce  or  delay  its  development  program,  delay  or  reduce  the  scope  of  potential
commercialization activities, or increase our expenditures and undertake development or commercialization activities at our own expense. If we elect to increase
our expenditures to fund development or commercialization activities on our own, we may need to obtain additional capital, which may not be available to us on
acceptable terms or at all.

The  market  opportunities  for  our  current  and  future  products,  if  and  when  approved,  may  be  limited  to  those  patients  who  are  ineligible  for  established
therapies or for whom prior therapies have failed, and may be small.

Cancer therapies are sometimes characterized as first-line, second-line, or third-line, and the FDA often approves new therapies initially only for third-line use.
When cancer is detected early enough, first-line therapy, usually chemotherapy, hormone therapy, surgery, radiation therapy, and, increasingly, immunotherapies or
a combination of these, is sometimes adequate to

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cure the cancer or prolong life without a cure. Second and third-line therapies are administered to patients when prior therapy is not effective. We expect to initially
seek  approval  of  our  current  and  future  product  candidates  as  a  therapy  for  patients  who  have  received  one  or  more  prior  treatments.  Subsequently,  for  those
products that prove to be sufficiently beneficial, if any, we would expect to seek approval potentially as a first-line therapy, but there is no guarantee that any of our
product candidates, even if approved, would be approved for first-line therapy, and, prior to any such approvals, we may have to conduct additional clinical trials.

Our projections of both the number of people who have the cancers we are targeting, as well as the subset of people with these cancers who have received one or
more prior treatments, and who have the potential to benefit from treatment with our current and future product candidates, are based on our beliefs and estimates.
These estimates have been derived from a variety of sources, including scientific literature, surveys of clinics, patient foundations, and market research, and may
prove to be incorrect. Further, new studies may change the estimated incidence or prevalence of these cancers. The number of patients may turn out to be lower
than expected. Additionally, the potentially addressable patient population for our current and future product candidates may be limited or may not be amenable to
treatment with any of our products, if and when approved. Even if we obtain significant market share for any of our products, if and when approved, because the
potential target populations may be small, we may never achieve profitability without obtaining marketing approval for additional indications, including use as
first- or second-line therapy.

We  may  develop  companion  diagnostics  and/or  complementary  diagnostics  for  our  current  and  future  product  candidates.  If  we  are  unable  to  successfully
develop  such  companion  diagnostics  or  complementary  diagnostics,  or  experience  significant  delays  in  doing  so,  we  may  not  realize  the  full  commercial
potential of our current or future product candidates.

Because we are focused on patient selection and enrichment strategies, in which predictive biomarkers may be used to identify the right patients for our product
candidates, we believe that our success may depend, in part, on our ability to develop companion diagnostics and/or complementary diagnostics, which are assays
or tests to identify an appropriate patient population for our product candidates. There has been limited success to date industry-wide in developing these types of
companion  diagnostics  and/or  complementary  diagnostics.  To  be  successful,  we  need  to  address  a  number  of  scientific,  technical  and  logistical  challenges.  We
have not yet initiated development of companion diagnostics and/or complementary diagnostics, and the process of obtaining or creating such a diagnostic is time
consuming and costly. We may not be successful in developing appropriate diagnostics to pair with any of our product candidates that receive marketing approval.
Companion  diagnostics  and/or  complementary  diagnostics  are  subject  to  regulation  by  the  FDA  and  similar  regulatory  authorities  outside  the  United  States  as
medical  devices  and  require  separate  regulatory  approval  or  clearance  prior  to  commercialization.  Given  our  limited  experience  in  developing  diagnostics,  we
expect to rely in part or in whole on third parties for their design and manufacture. If we are unable to engage a third party to assist us, or if we, or any third parties
that  we  engage,  are  unable  to  successfully  develop  companion  diagnostics  and/or  complementary  diagnostics  for  our  current  and  future  product  candidates,  or
experience delays in doing so:

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the development of our current and future product candidates may be adversely affected if we are unable to appropriately select patients for enrollment in
our clinical trials;

our  current  and  future  product  candidates  may  not  receive  marketing  approval  if  safe  and  effective  use  of  a  product  candidate  depends  on  companion
diagnostics and/or complementary diagnostics and such a diagnostic is not commercially available or otherwise approved or cleared by the appropriate
regulatory authority; and

we may not realize the full commercial potential of our current and future product candidates that receive marketing approval if, among other reasons, we
are unable to appropriately identify, or it takes us longer to identify, patients who are likely to benefit from therapy with our products, if approved.

If any of these events were to occur, our business would be harmed, possibly materially.

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If product liability lawsuits are brought against us, we may incur substantial liabilities.

We face an inherent risk of product liability as a result of the clinical testing of our current and future product candidates. For example, 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. 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.  Even  successful  defense  would  require  significant  financial  and  management  resources.
Regardless of the merits or eventual outcome, we may experience financial or reputational losses in the future due to such product liability claims.

Insurance coverage is increasingly expensive. We may not be able to maintain insurance at a reasonable cost or in an amount adequate to satisfy any liability that
may arise, if at all. Our insurance policy contains 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.

Adverse events in the field of immuno-oncology could damage public perception of our product candidates and negatively affect our business.

The commercial success of our products will depend in part on public acceptance of the use of cancer immunotherapies. Adverse events in clinical trials of any of
our current or future product candidates or other similar products and the resulting publicity, as well as any other adverse events in the field of immuno-oncology
that may occur, including in connection with third-party therapies such as approved immunotherapy antibodies, the anti-ILT4 antibodies of Merck & Co., Inc. and
Immune-Onc Therapeutics, Inc., the dual antagonist anti-ILT4/ILT2 antibody of NGM Biopharmaceuticals, Inc., the anti-ICOS antibodies of Bristol Myers Squibb,
GlaxoSmithKline plc, or Sanofi S.A., Xencor, Inc.’s anti-PD-1 and anti-ICOS bispecific antibody, or the anti-ILT3 (LILRB4) antibodies of Merck & Co., Inc.,
Immune-Onc  Therapeutics,  Inc.  and  NGM  Biopharmaceuticals,  Inc.,  could  result  in  a  decrease  in  demand  for  our  product  candidates.  If  public  perception  is
influenced by claims that the use of cancer immunotherapies is unsafe, whether related to our or third-party therapies, our products may not be accepted by the
general public or the medical community.

Future adverse events in immuno-oncology or the biopharmaceutical industry could also result in greater governmental regulation, stricter labeling requirements
and  potential  regulatory  delays  in  the  testing  or  approvals  of  our  products.  Any  increased  scrutiny  could  delay  or  increase  the  costs  of  obtaining  marketing
approval for our current and future product candidates.

Healthcare legislative reform measures may have a material adverse effect on our business and results of operations.

In the United States, there have been and continue to be a number of legislative initiatives to contain healthcare costs. For example, in March 2010, the Affordable
Care Act, or ACA, was passed, which substantially changed the way health care is financed by both governmental and private insurers, and significantly impacted
the U.S. pharmaceutical industry.

Since its enactment, there have been numerous judicial, administrative, executive and legislative challenges to certain aspects of the ACA, and we expect there be
to  additional  challenges  and  amendments  to  the  ACA  in  the  future.  For  example,  with  enactment  of  the  Tax  Cuts  for  Jobs  Act,  or  TCJA,  in  2017,  Congress
repealed the “individual mandate.” The repeal of this provision, which requires most Americans to carry a minimum level of health insurance, became effective in
2019.

The implementation of the ACA is ongoing, and the law appears likely to continue the downward pressure on pharmaceutical pricing. Litigation and legislation
related to the ACA are likely to continue, with unpredictable and uncertain results. We cannot predict what effect further changes to the ACA would have on our
business. We expect that additional state and federal healthcare reform measures will be adopted in the future, any of which could limit the amounts that federal
and state governments will pay for healthcare products and services, which could result in reduced demand for our product candidates, companion diagnostics or
complementary diagnostics, or additional pricing pressures.

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Our future relationships with customers and third-party payors in the United States and elsewhere may be subject, directly or indirectly, to applicable anti-
kickback, fraud and abuse, false claims, transparency, health information privacy and security and other healthcare laws and regulations, which could expose
us to criminal sanctions, civil penalties, contractual damages, reputational harm, administrative burdens and diminished profits and future earnings.

Our future arrangements with third-party payors and customers may expose us to broadly applicable fraud and abuse and other healthcare laws and regulations. In
addition,  we  may  be  subject  to  transparency  laws  and  patient  privacy  regulation  by  the  U.S.  federal  and  state  governments  and  by  governments  in  foreign
jurisdictions  in  which  we  conduct  our  business.  The  applicable  federal,  state  and  foreign  healthcare  laws  and  regulations  that  may  affect  our  ability  to  operate
include  the  federal  Anti-Kickback  Statute,  the  federal  Health  Insurance  Portability  and  Accountability  Act  of  1996,  or  HIPAA,  as  amended  by  the  Health
Information Technology for Economic and Clinical Health Act of 2009 the federal legislation commonly referred to as the Physician Payments Sunshine Act, and
analogous  state  and  foreign  laws  and  regulations,  any  of  which  may  constrain  the  business  or  financial  arrangements  and  relationships  through  which  we  sell,
market and distribute any products for which we obtain marketing approval.

Because of the breadth of these laws and the narrowness of the statutory exceptions and regulatory safe harbors available under such laws, it is possible that some
of our business activities could be subject to challenge under one or more of such laws. The scope and enforcement of each of these laws is also uncertain and any
investigation or settlement could be time- and resource-consuming, divert management’s attention, increase our costs or otherwise have an adverse effect on our
business.

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 various
significant penalties, any of which could harm our ability to operate our business and our financial results. In addition, the approval and commercialization of our
product candidates outside the United States will also likely subject us to foreign equivalents of the healthcare laws mentioned above, among other foreign laws.

Risks Related to our Financial Position and Need for Additional Capital

We have accumulated significant losses since our inception and anticipate that we will continue to incur substantial net losses in the foreseeable future.

We  are  a  clinical-stage  biopharmaceutical  company  with  a  limited  operating  history,  and  we  are  in  the  early  stages  of  our  development  efforts.  Investment  in
biopharmaceutical  product  development  is  highly  speculative  because  it  entails  substantial  upfront  capital  expenditures  and  significant  risk  that  any  potential
product  candidate  will  fail  to  demonstrate  adequate  effect  or  an  acceptable  safety  profile,  gain  marketing  approval  and  become  commercially  viable.  We  have
financed  our  operations  primarily  through  the  sale  of  equity  securities  and  through  our  license  and  collaboration  arrangements  with  Celgene  Corporation  and
Gilead.  Since  our  inception,  most  of  our  resources  have  been  dedicated  to  the  preclinical  and  clinical  development  of  our  product  candidates  and  discovery
programs. We have no products approved for commercial sale and have not generated any revenue from product sales to date, and we continue to incur significant
research and development and other expenses related to our ongoing operations.

We have incurred losses in each year since our inception, except for net income of $56.8 million for the year ended December 31, 2019 as a result of revenue
recognized  under  our  prior  agreements  with  Celgene  Corporation,  and  we  incurred  a  net  loss  of  $90.9  million  for  the  year  ended  December  31,  2021.  As  of
December 31, 2021, we had an accumulated deficit of $241.9 million. We expect to incur significant losses for the foreseeable future, and we expect these losses to
increase as we continue our research and development of, and seek marketing approvals for, our current and future product candidates.

Even if we succeed in receiving marketing approval for and commercialize our product candidates, we will continue to incur substantial research and development
and other expenditures to develop and market additional potential products. 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 have never generated any revenue from product sales and our ability to generate revenue from product sales and become profitable depends on our success
on a number of factors.

We have no products approved for commercial sale, have not generated any revenue from product sales, and do not anticipate generating any revenue from product
sales  until  some  time  after  we  have  received  marketing  approval  for  the  commercial  sale  of  a  product  candidate,  if  ever.  Our  ability  to  generate  revenue  and
achieve profitability depends significantly on our success in many factors, including:

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completing clinical development of JTX-8064, vopratelimab and pimivalimab;

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completing preclinical development of JTX-1484;

completing research, discovery, preclinical and clinical development of future product candidates;

obtaining marketing approvals for our current and future product candidates for which we complete clinical trials;

developing  a  sustainable  and  scalable  manufacturing  process  for  our  product  candidates,  including  establishing  and  maintaining  commercially  viable
supply and manufacturing relationships with third parties;

launching and commercializing our product candidates for which we obtain marketing approvals, either directly or with a collaborator or distributor;

obtaining market acceptance of our current and future product candidates as viable treatment options;

addressing any competing technological and market developments;

identifying, assessing, acquiring and developing new product candidates;

negotiating favorable terms in any collaboration, licensing, or other arrangements into which we may enter;

obtaining, maintaining, protecting, and expanding our portfolio of intellectual property rights, including patents, trade secrets and know-how; and

attracting, hiring and retaining qualified personnel.

Even if our product candidates or future product candidates that we develop are approved for commercial sale, we anticipate incurring significant costs associated
with commercializing any approved product candidate. These costs may fluctuate or exceed our expectations and our revenues will depend on many factors that
we cannot control or estimate. If we are not able to generate revenue from the sale of any approved products, we may never become profitable.

We will require substantial additional financing to achieve our goals, and a failure to obtain this necessary capital when needed could force us to delay, limit,
reduce or terminate our product development or commercialization efforts.

Our  operations  have  consumed  substantial  amounts  of  cash  since  inception.  As  of  December  31,  2021,  our  cash,  cash  equivalents,  short-term  and  long-term
investments  were  $220.2  million.  We  expect  to  continue  to  spend  substantial  amounts  to  continue  the  clinical  development  of  JTX-8064,  vopratelimab  and
pimivalimab and preclinical and clinical development of JTX-1484 and future product candidates. If we are able to gain marketing approval for any of our product
candidates, we will require significant additional amounts of cash in order to launch and commercialize those product candidates to the extent that such launch and
commercialization are not the responsibility of a collaborator or a licensee. In addition, other unanticipated costs may arise. Because the design and outcome of our
planned and anticipated clinical trials are highly uncertain, we cannot reasonably estimate the actual amounts necessary to successfully complete the development
and commercialization of our current and future product candidates. Our future capital requirements depend on many factors, including:

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•

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•

•

•

•

•

the  scope,  progress,  results  and  costs  of  researching  and  developing  our  product  candidates,  and  conducting  preclinical  studies  and  clinical  trials,
including the impacts of the COVID-19 pandemic on the timing and progress of our ongoing and planned clinical trials;

the timing of, and the costs involved in, obtaining marketing approvals for our product candidates if clinical trials are successful;

the cost of commercialization activities for our product candidates, that are approved for sale, including marketing, sales and distribution costs;

the cost of manufacturing our product candidates for clinical trials in preparation for marketing approval and in preparation for commercialization;

our ability to establish and maintain strategic licensing or other arrangements and the financial terms of such agreements;

the  costs  involved  in  preparing,  filing,  prosecuting,  maintaining,  expanding,  defending  and  enforcing  patent  claims,  including  litigation  costs  and  the
outcome of such litigation;

the timing, receipt, and amount of sales of, or royalties on, our future products, if any;

the emergence of competing cancer therapies and other adverse market developments; and

the requirement for and cost of developing companion diagnostics and/or complementary diagnostics.

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Until we can generate sufficient product and royalty revenue to finance our cash requirements, which we may never do, we expect to finance our future cash needs
through  a  combination  of  public  or  private  equity  offerings,  debt  financings,  collaborations,  strategic  alliances,  licensing  arrangements  and  other  marketing  or
distribution arrangements. Based on our research and development plans, we expect that our cash, cash equivalents, short-term and long-term investments as of
December 31, 2021 will enable us to fund our operating expenses and capital expenditure requirements through the third quarter of 2023.

If we are unable to obtain adequate financing on favorable terms when needed, we may have to delay, reduce the scope of or suspend one or more of our clinical
trials  or  research  and  development  programs  or  our  commercialization  efforts.  Further,  our  ability  to  raise  additional  capital  may  be  adversely  impacted  by
potential worsening global economic conditions and disruptions to and volatility in the credit and financial markets in the United States and worldwide resulting
from the ongoing COVID-19 pandemic or other macroeconomic conditions.

Raising additional capital may cause dilution to our stockholders, restrict our operations or require us to relinquish rights to our technologies or our current
and future product candidates.

Until such time, if ever, as we can generate substantial product revenues, we expect to finance our cash needs through a combination of private and public equity
offerings, debt financings, collaborations, strategic alliances and licensing arrangements. To the extent that we raise additional capital through the sale of common
stock or securities convertible or exchangeable into common stock, stockholders’ ownership interest will be diluted, and the terms of these securities may include
liquidation or other preferences that adversely affect our stockholders’ rights. Debt financing, if available, would increase our fixed payment obligations and may
involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures
or declaring dividends.

If we are unable to raise additional funds through equity or debt financings when needed, and instead raise additional capital through marketing and distribution
agreements or other collaborations, strategic alliances or licensing arrangements with third parties, we may have to relinquish certain valuable rights to our current
and future product candidates, technologies, future revenue streams or discovery programs or grant licenses on terms that may not be favorable to us.

Risks Related to Intellectual Property

If we are unable to obtain, maintain and protect our intellectual property rights for our product candidates or if our intellectual property rights are inadequate,
our competitive position could be harmed.

Our commercial success will depend in part on our ability to obtain and maintain patent and other intellectual property protection in the United States and other
countries with respect to our product candidates. We rely on trade secret, patent, copyright and trademark laws, and confidentiality, licensing and other agreements
with employees and third parties, all of which offer only limited protection. We currently, or will in the future, seek to protect our proprietary position by filing and
prosecuting patent applications in the United States and abroad related to our current and future product candidates, and any future novel technologies that are
important to our business.

The  steps  we,  our  licensees  or  our  licensors  have  taken  to  protect  our  proprietary  rights  may  not  be  adequate  to  preclude  misappropriation  of  our  proprietary
information  or  infringement  of  our  intellectual  property  rights,  both  inside  and  outside  of  the  United  States.  Filing,  prosecuting  and  defending  patents  on  our
current and future product candidates throughout the world would be prohibitively expensive, and intellectual property rights in some countries outside the United
States can be less extensive than those in the United States.

If we, our licensees or our licensors are unable to obtain and maintain patent protection for our current and future product candidates, or if the scope of the patent
protection  obtained  is  not  sufficient,  our  competitors  could  develop  and  commercialize  products  similar  or  superior  to  ours,  and  our  ability  to  successfully
commercialize our current and future product candidates and future technologies may be adversely affected.

Our pending applications cannot be enforced against third parties unless and until a patent issues from such applications and, even after issuance, such patents may
be challenged in the courts or patent offices in the United States and abroad. We are currently involved in an appeal of an opposition proceeding in the European
Patent Office, and this proceeding may be ongoing for a number of years and may divert employee resources from our business. Additionally, this and other such
proceedings may result in the loss of patent protection, the narrowing of claims in such patents or the invalidity or unenforceability of such patents, which could
limit our ability to stop others from using or commercializing similar or identical products or limit the duration of the patent protection for our current and future
product candidates.

Many  companies  have  encountered  significant  problems  in  protecting  and  defending  intellectual  property  rights  in  certain  foreign  jurisdictions.  Any  efforts  to
enforce  our  intellectual  property  and  proprietary  rights  around  the  world  may  be  inadequate  to  obtain  a  significant  commercial  advantage  from  the  intellectual
property we develop or license. Moreover, many countries

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have compulsory licensing laws under which a patent owner may be compelled to grant licenses to third parties. If we or any of our licensors are forced to grant a
license to third parties with respect to any patents relevant to our business, our competitive position may be impaired, and our business and results of operations
may be adversely affected.

Furthermore, we cannot predict whether any of our future patent applications will result in the issuance of patents that effectively protect our current and future
product  candidates,  or  if  any  of  our  issued  patents  or  if  any  of  our  licensor’s  issued  patents  will  effectively  prevent  others  from  commercializing  competitive
products. In some cases, it may be difficult or impossible to detect third-party infringement or misappropriation of our intellectual property rights, even in relation
to issued patent claims, and proving any such infringement may be even more difficult. If we are unable to obtain, maintain, and protect our intellectual property
our competitive advantage could be harmed, and it could result in a material adverse effect on our business, financial condition, and the results of operations and
prospects.

Patent  terms  may  be  inadequate  to  protect  our  competitive  position  on  our  products  for  an  adequate  amount  of  time,  and  our  current  and  future  product
candidates for which we intend to seek approval as biologic products may face competition sooner than anticipated.

Given the amount of time required for the development, testing and regulatory review of new product candidates, patents protecting such candidates might expire
before or shortly after such candidates are commercialized. We expect to seek patent term extensions of patent terms in the United States for our issued patents,
licensed patents and any patents we own in the future and, if available, in other countries where that may be available when we are prosecuting patents. In the
United  States,  the  Drug  Price  Competition  and  Patent  Term  Restoration  Act  of  1984  permits  a  patent  term  extension  of  up  to  five  years  beyond  the  normal
expiration  of  the  patent,  which  is  limited  to  the  approved  indication.  However,  the  applicable  authorities,  including  the  FDA  and  the  United  States  Patent  and
Trademark Office, or USPTO, in the United States, and any equivalent regulatory authority in other countries, may not agree with our assessment of whether such
extensions  are  available,  and  may  refuse  to  grant  extensions  to  our  patents,  or  may  grant  more  limited  extensions  than  we  request.  We  may  not  be  granted  an
extension  because  of,  for  example,  failure  to  exercise  due  diligence  during  the  testing  phase  or  regulatory  review  process,  failure  to  apply  within  applicable
deadlines,  failure  to  apply  prior  to  expiration  of  relevant  patents  or  otherwise  failing  to  satisfy  applicable  requirements.  If  we  are  unable  to  obtain  patent  term
extension or the term of any such extension is less than we request, our competitors may be able to take advantage of our investment in development and clinical
trials by referencing our clinical and preclinical data and launch their product earlier than might otherwise be the case, which could result in a material adverse
effect on our business, financial condition, results of operation and prospects.

The  Biologics  Price  Competition  and  Innovation  Act  of  2009,  or  BPCIA,  established  legal  authority  for  the  FDA  to  review  and  approve  biosimilar  biologics,
including the possible designation of a biosimilar as “interchangeable” based on its similarity to an existing brand product. Under the BPCIA, an application for a
biosimilar product cannot be approved by the FDA until 12 years after the original branded product was approved under a BLA. The law is complex and is still
being interpreted and implemented by the FDA. As a result, its ultimate impact, implementation, and meaning are subject to uncertainty. While it is uncertain when
such  processes  intended  to  implement  the  BPCIA  may  be  fully  adopted  by  the  FDA,  any  such  processes  could  have  a  material  adverse  effect  on  the  future
commercial prospects for our biological products.

We intend to seek market exclusivity for our biological product candidates that is subject to its own BLA for 12 years in the United States, 10 years in Europe and
other durations in other markets. However, the term of the patents that cover such product candidates may not extend beyond the applicable market exclusivity
awarded by a particular country. For example, in the United States, if all of the patents that cover our particular biologic product expire before the 12-year market
exclusivity expires, a third party could submit a marketing application for a biosimilar product four years after approval of our biologic product, and the FDA
could immediately review the application and approve the biosimilar product for marketing 12 years after approval of our biologic. Alternatively, a third party
could submit a BLA for a similar or identical product any time after approval of our biologic product, and the FDA could immediately review and approve the
similar or identical product for marketing and the third party could begin marketing the similar or identical product upon expiry of all of the patents that cover our
particular biologic product.

Additionally, there is a risk that this exclusivity could be shortened due to congressional action, potentially creating the opportunity for biosimilar competition
sooner  than  anticipated.  The  extent  to  which  a  biosimilar,  once  approved,  will  be  substituted  for  any  one  of  our  reference  products  in  a  way  that  is  similar  to
traditional  generic  substitution  for  non-biological  products  is  not  yet  clear,  and  will  depend  on  a  number  of  marketplace  and  regulatory  factors  that  are  still
developing.

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If  we  are  unable  to  protect  the  confidentiality  of  our  proprietary  information  and  know-how,  the  value  of  our  technology  and  products  could  be  adversely
affected.

In addition to seeking patent protection, we also rely on other proprietary rights, including protection of trade secrets, know-how and confidential and proprietary
information.  To  maintain  the  confidentiality  of  our  trade  secrets  and  proprietary  information,  we  enter  into  confidentiality  agreements  with  our  employees,
consultants, collaborators and other third parties who have access to our trade secrets. These agreements require that all confidential information developed by the
individual or made known to the individual by us during the course of the individual’s relationship with us be kept confidential and not disclosed to third parties.
Our  agreements  with  employees  also  provide  that  any  inventions  conceived  by  the  individual  in  the  course  of  rendering  services  to  us  shall  be  our  exclusive
property. However, we may not obtain these agreements in all circumstances, and individuals with whom we have these agreements may not comply with their
terms. The assignment of intellectual property rights may not be self-executing, or the assignment agreements may be breached, and we may be forced to bring
claims against third parties, or defend claims that they may bring against us, to determine the ownership of what we regard as our intellectual property. In addition,
in  the  event  of  unauthorized  use  or  disclosure  of  our  trade  secrets  or  proprietary  information,  these  agreements,  even  if  obtained,  may  not  provide  meaningful
protection, particularly for our trade secrets or other confidential information.

Adequate remedies may not exist in the event of unauthorized use or disclosure of our confidential information. Enforcing a claim that a party illegally disclosed or
misappropriated a trade secret is difficult, expensive, and time consuming, and the outcome is unpredictable. In addition, some courts are less willing or unwilling
to protect trade secrets. The disclosure of our trade secrets or the independent development of our trade secrets by a competitor or other third party would impair
our competitive position and may materially harm our business, financial condition, results of operations and prospects.

Third parties may initiate legal proceedings alleging that we are infringing their intellectual property rights, the outcome of which would be uncertain and
could harm our business.

Our  commercial  success  depends  on  our  ability  and  the  ability  of  our  current  or  future  licensees  or  collaborators  to  develop,  manufacture,  market  and  sell  our
product  candidates,  and  to  use  our  related  proprietary  technologies  without  infringing,  misappropriating  or  otherwise  violating  the  intellectual  property  and
proprietary rights of third parties. The biotechnology and pharmaceutical industries are characterized by extensive litigation regarding patents and other intellectual
property rights. We may become party to, or threatened with, adversarial proceedings or litigation regarding intellectual property rights with respect to our current
and future product candidates. For example, we are aware of third-party patents or patent applications that may be construed to cover the targets of JTX-8064,
vopratelimab, pimivalimab or GS-1811. If we are found to infringe a third-party’s intellectual property rights, and we are unsuccessful in demonstrating that such
intellectual property rights are invalid or unenforceable, we could be required to obtain a license from such third party to continue developing, manufacturing and
commercializing our product candidates. However, we may not be able to obtain any required license on commercially reasonable terms or at all. Even if we were
able to obtain a license, it could be non-exclusive, thereby giving our competitors and other third parties access to the same technologies licensed to us, and it
could require us to make substantial licensing and royalty payments. We also could be forced, including by court order, to cease developing, manufacturing, and
commercializing our product candidates. In addition, in any such proceeding or litigation, we could be found liable for significant monetary damages, including
treble  damages  and  attorneys’  fees,  if  we  are  found  to  have  willfully  infringed  a  patent  or  other  intellectual  property  right.  Any  of  the  foregoing  could  have  a
material adverse effect on our business, financial condition, results of operations and prospects.

Furthermore,  we  are  testing  our  product  candidates,  and  expect  to  conduct  additional  trials  of  our  product  candidates,  with  other  products  that  are  covered  by
patents held by other companies or institutions. In the event that a labeling instruction is required in product packaging recommending that combination, we could
be  accused  of,  or  held  liable  for,  infringement  of  the  third-party  patents  covering  the  product  candidate  or  product  recommended  for  administration  with  our
product candidates. In such a case, we could be required to obtain a license from the other company or institution to use the required or desired package labeling,
which may not be available on commercially reasonable terms, or at all.

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If  we  breach  any  of  our  license  agreements  or  collaboration  agreements,  it  could  have  a  material  adverse  effect  on  our  commercialization  efforts  for  our
product candidates.

Our commercial success depends on our ability, and at times, the ability of our licensors and current or future licensees and collaborators to develop, manufacture,
market, and sell our product candidates, and use our licensors’ proprietary technologies without infringing the property rights of third parties. For example, we
have  entered  into  an  exclusive  license  agreement  with  Sloan  Kettering  Institute  for  Cancer  Research,  Memorial  Sloan  Kettering  Cancer  Center  and  Memorial
Hospital  for  Cancer  and  The  University  of  Texas  MD  Anderson  Cancer  Center  related  to  certain  uses  of  our  vopratelimab,  and  we  may  enter  into  additional
licenses in the future. These and other licenses may not provide exclusive rights to use such intellectual property and technology in all relevant fields of use and in
all  territories  in  which  we  may  wish  to  develop  or  commercialize  our  products  in  the  future.  As  a  result,  we  may  not  be  able  to  prevent  competitors  from
developing and commercializing competitive products in territories included in all our licenses.

In  addition,  we  may  not  have  the  right  to  control  the  preparation,  filing,  prosecution,  maintenance,  enforcement  and  defense  of  patents  and  patent  applications
covering the technology that we license to or from third parties. For example, under the Gilead License Agreement, Gilead has the first right to enforce, maintain
or defend our intellectual property rights with respect to GS-1811. In such cases, we cannot be certain that these patents and patent applications will be prepared,
filed,  prosecuted,  maintained,  enforced,  and  defended  in  a  manner  consistent  with  the  best  interests  of  our  business.  If  Gilead  or  any  other  of  our  licensors  or
licensees fail to prosecute, maintain, enforce and defend such patents, or lose rights to those patents or patent applications, the rights we have licensed may be
reduced or eliminated and our right to develop and commercialize our product candidates that are the subject of such licensed rights could be adversely affected.
Furthermore, our owned and in-licensed patents may be subject to a reservation of rights by one or more third parties.

Certain of our license agreements also require us to meet development thresholds to maintain the license, including establishing a set timeline for developing and
commercializing products. If we fail to comply with the obligations under our license agreements, including payment and diligence terms, our licensors may have
the right to terminate our agreements. Such an occurrence could materially adversely affect the value of the product candidate being developed under any such
agreement. Termination of our license agreements or reduction or elimination of our rights under them may result in our having to negotiate a new or reinstated
agreement, which may not be available to us on equally favorable terms, or at all.

If disputes over intellectual property that we have licensed prevent or impair our ability to maintain our current licensing arrangements on commercially acceptable
terms, we may be unable to successfully develop and commercialize the affected product candidates, which could have a material adverse effect on our business,
financial conditions, results of operations and prospects.

Further,  the  resolution  of  any  contract  interpretation  disagreement  that  may  arise  could  narrow  what  we  believe  to  be  the  scope  of  our  rights  to  the  relevant
intellectual property or technology, or increase what we believe to be our financial or other obligations under the relevant agreement, either of which could have a
material adverse effect on our business, financial condition, results of operations and prospects.

We may not be successful in obtaining necessary rights to our product candidates we may develop or obtain through acquisitions and in-licenses.

We  currently  have  rights  to  intellectual  property,  through  licenses  from  third  parties,  for  certain  uses  of  vopratelimab.  Because  our  current  and  future  product
candidates may require the use of proprietary rights held by third parties, the growth of our business likely will depend, in part, on our ability to acquire, in-license
or use these proprietary rights. We may be unable to acquire or in-license any compositions, methods of use, processes or other intellectual property rights from
third parties that we identify as necessary for our current and future product candidates. The licensing or acquisition of third-party intellectual property rights is a
competitive area, and several more established companies may pursue strategies to license or acquire third-party intellectual property rights that we may consider
attractive.  These  established  companies  may  have  a  competitive  advantage  over  us  due  to  their  size,  capital  resources  and  greater  clinical  development  and
commercialization capabilities.

If we are unable to successfully obtain required third-party intellectual property rights or maintain the existing intellectual property rights we have, we may have to
abandon or alter our plans for the development or commercialization of the relevant program or product candidate, which could have a material adverse effect on
our business, financial condition, results of operations and prospects.

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

The  USPTO  and  various  foreign  governmental  patent  agencies  require  compliance  with  a  number  of  procedural,  documentary,  fee  payments  and  other  similar
provisions during the patent application process and to maintain patents after they are issued. In certain circumstances, we rely on our licensing partners to take the
necessary action to comply with these requirements with respect to our licensed intellectual property. While an unintentional lapse can 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.  If  we  fail  to  obtain  and  maintain  the  patents  and  patent
applications covering our products or procedures, we may not be able to stop a competitor from marketing products that are the same as or similar to our current
and future product candidates, which would have a material adverse effect on our business.

Changes to the patent law in the United States and other jurisdictions could diminish the value of patents in general, thereby impairing our ability to protect
our product candidates.

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  involves  both  technological  and  legal  complexity  and  is  therefore  costly,  time  consuming  and  inherently  uncertain.
Changes in either the patent laws or interpretation of the patent laws in the United States could increase the uncertainties and costs.

The U.S. Supreme Court has ruled on several patent cases in recent years, either narrowing the scope of patent protection available in certain circumstances or
weakening the rights of patent owners in certain situations. Depending on future actions by the U.S. Congress, the U.S. courts, the USPTO and the relevant law-
making bodies in other countries, 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.

We may become involved in lawsuits to protect or enforce our intellectual property, which could be expensive, time-consuming and unsuccessful and have a
material adverse effect on the success of our business.

Competitors may infringe our licensed patents or any patent we own in the future or misappropriate or otherwise violate our intellectual property rights. We may
also be required to defend against claims of infringement and our licensed patents and any patents we own in the future may become involved in priority or other
intellectual property related disputes. To counter infringement or unauthorized use, litigation may be necessary to enforce or defend our intellectual property rights
or to determine the validity and scope of our own intellectual property rights or the proprietary rights of others. Also, third parties may initiate legal proceedings
against us or our licensors to assert that we are infringing their intellectual property rights or to challenge the validity or scope of our owned or licensed intellectual
property rights. Litigation and other intellectual property related proceedings could result in substantial costs and diversion of management resources, which could
harm  our  business  and  financial  results.  Despite  our  best  efforts,  we  may  not  be  able  to  prevent  third  parties  from  infringing  upon  or  misappropriating  our
intellectual property. In addition, an adverse result in any litigation or other intellectual property related proceeding could put one or more of our patents at risk of
being invalidated, held unenforceable or interpreted narrowly.

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  disclosed  during  this  type  of  litigation.  There  could  also  be  public  announcements  of  the  results  of  hearings,  motions  or  other  interim
proceedings or developments in any such proceedings. If securities analysts or investors perceive these results to be negative, it also could have a material adverse
effect  on  the  price  of  shares  of  our  common  stock.  Any  of  the  foregoing  may  have  a  material  adverse  effect  on  our  business,  financial  condition,  results  of
operations and prospects.

We may be subject to claims by third parties asserting that our collaborators, licensors, employees or we have misappropriated their intellectual property, have
wrongfully used or disclosed confidential information of third parties or are in breach of non-competition or non-solicitation agreements with our competitors.

Many of our employees, our collaborators’ employees and our licensors’ employees, including our senior management, are currently or previously were employed
at universities or other biotechnology or pharmaceutical companies, including our competitors or potential competitors. Some of these employees, including each
member of our senior management, executed proprietary rights, non-disclosure and non-competition agreements, or similar agreements, in connection with such
previous employment. Although we try to ensure that our employees do not use the proprietary information or know-how of others in their work for us, we may be
subject to claims that we or these employees have used or disclosed intellectual property of any such individual’s current or former employer. In addition, we could
be subject to claims that we or our employees have inadvertently or otherwise used or disclosed alleged trade secrets or other confidential information of former
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competitors, that we caused an employee to breach the terms of his or her non-competition or non-solicitation agreement, or that we or these individuals have,
inadvertently  or  otherwise,  used  or  disclosed  the  alleged  trade  secrets  or  other  proprietary  information  of  a  former  employer  or  competitor.  Litigation  may  be
necessary to defend against such claims. If we fail in defending any such claims, we may lose valuable intellectual property rights or personnel or sustain monetary
damages. Even if we are successful in defending against such claims, litigation could result in substantial costs and be a distraction to management. Any of the
foregoing may have a material adverse effect on our business, financial condition, results of operations and prospects.

Issued patents covering our current and future product candidates could be found invalid or unenforceable if challenged in court or before the USPTO or
comparable foreign authority.

If we or one of our licensing partners initiate legal proceedings against a third party to enforce a patent covering one of our current or future product candidates,
the defendant could counterclaim that the patent covering our product candidate is invalid or unenforceable. The outcome following legal assertions of invalidity
and unenforceability is unpredictable. If a third party were to prevail on a legal assertion of invalidity and/or unenforceability, we would lose at least part, and
perhaps all, of the patent protection on our current and future product candidates. Such a loss of patent protection could have a material adverse impact on our
business.

Risks Related to Employee Matters, Managing our Growth and Other Risks Related to our Business

We are highly dependent on our key personnel, and if we are not successful in attracting, motivating and retaining highly qualified personnel, we may not be
able to successfully implement our business strategy.

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

Our  Cambridge,  Massachusetts  headquarters  is  located  in  a  region  that  is  home  to  many  other  biopharmaceutical  companies  and  many  academic  and  research
institutions. Competition for skilled personnel is intense and the turnover rate can be high, which may limit our ability to hire and retain highly qualified personnel
on acceptable terms or at all. We expect that we will need to recruit talent from outside of our region and doing so may be costly and difficult.

To induce valuable employees to remain at our Company, in addition to salary and cash incentives, we have provided equity awards that vest over time. The value
to employees of these equity grants 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.  Although  we  have  employment  agreements  with  our  key  employees,  these
employment agreements provide for at-will employment, meaning that such employees could leave our employment at any time, with or without notice. We do not
maintain “key man” insurance policies on the lives of all of these individuals or the lives of any of our other employees.

We  currently  have  no  marketing  and  sales  organization  and  have  no  experience  in  marketing  products.  If  we  are  unable  to  establish  marketing  and  sales
capabilities or enter into agreements with third parties to market and sell our product candidates, we may not be able to generate product revenue.

We  currently  have  no  sales,  marketing,  or  distribution  capabilities  and  have  no  experience  in  marketing  products.  If  any  of  our  product  candidates  receives
appropriate  regulatory  approval,  we  intend  to  develop  an  in-house  marketing  organization  and  sales  force,  which  will  require  significant  capital  expenditures,
management resources and time. We will have to compete with other pharmaceutical and biotechnology companies to recruit, hire, train and retain marketing and
sales personnel.

If we are unable or decide not to establish internal sales, marketing and distribution capabilities, we will pursue collaborative arrangements regarding the sales and
marketing of our products; however, we cannot assure stockholders that we will be able to establish or maintain such collaborative arrangements, on favorable
terms if at all. We cannot assure stockholders that we will be able to develop in-house sales and distribution capabilities or establish or maintain relationships with
third-party collaborators to commercialize any current or future product candidates.

Our  employees,  independent  contractors,  vendors,  principal  investigators,  CROs  and  consultants  may  engage  in  misconduct  or  other  improper  activities,
including non-compliance with regulatory standards and requirements and insider trading.

We are exposed to the risk that our employees, independent contractors, vendors, principal investigators, CROs and consultants may engage in fraudulent conduct
or other illegal activity. Misconduct by these parties could include intentional, reckless and/or negligent conduct or disclosure of unauthorized activities to us that
violate the regulations of the FDA and comparable

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foreign  regulatory  authorities,  including  those  laws  requiring  the  reporting  of  true,  complete  and  accurate  information  to  such  authorities;  healthcare  fraud  and
abuse laws and regulations in the United States and abroad; anti-corruption and anti-bribery laws, including the Foreign Corrupt Practices Act, and various other
anti-corruption laws in countries outside of the United States; or laws that require the reporting of financial information or data accurately. In particular, sales,
marketing and business arrangements in the healthcare industry are subject to extensive laws and regulations intended to prevent fraud, misconduct, kickbacks,
self-dealing and other abusive practices. We have adopted a code of conduct applicable to all of our employees and require all employees, including management,
to participate in anti-corruption training,  but  it  is  not  always  possible  to  identify  and  deter  misconduct,  and  the  precautions  we  take  to  detect  and  prevent  this
activity may not be effective in controlling unknown or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits
stemming  from  a  failure  to  comply  with  these  laws  or  regulations.  Additionally,  we  are  subject  to  the  risk  that  a  person  could  allege  such  fraud  or  other
misconduct, even if none occurred. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, those
actions could result in significant penalties and could have a material adverse effect on our ability to operate our business and our results of operations.

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

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

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

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

We may evaluate various acquisitions and additional strategic partnerships, including licensing or acquiring complementary products, intellectual property rights,
technologies, or businesses. Any potential acquisition or strategic partnership may entail numerous risks, including:

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increased operating expenses and cash requirements;

the assumption of additional indebtedness or contingent liabilities;

the issuance of our equity securities;

assimilation of operations, intellectual property and products of an acquired company, including difficulties associated with integrating new personnel;

the diversion of our management’s attention from our existing product programs and initiatives in pursuing such a strategic merger or acquisition;

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

risks and uncertainties associated with the other party to such a transaction, including the prospects of that party and their existing products or product
candidates and marketing approvals; and

our  inability  to  generate  revenue  from  acquired  technology  and/or  products  sufficient  to  meet  our  objectives  in  undertaking  the  acquisition  or  even  to
offset the associated acquisition and maintenance costs.

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

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Our internal information technology systems, or those used by our CROs or other third parties, may fail or suffer security breaches and cyber-attacks, which
could  compromise  our  intellectual  property  or  other  sensitive  information,  could  result  in  a  material  disruption  of  our  business  or  could  subject  us  to
regulatory actions that could result in significant fines.

We, our CROs and other third parties rely significantly upon information technology systems, and despite the implementation of security measures, our internal
information technology systems are vulnerable to damage from computer viruses and unauthorized access. A system failure or a security breach could result in a
material disruption of our business operations. We, our CROs, contractors and other third parties rely on information technology networks and systems to process,
personal  identifying  information  and  payroll  data,  including  operational  and  financial  transactions  and  records.  In  particular,  we  rely  on  third  parties  for  many
aspects of our business, including manufacturing product candidates and conducting clinical trials. The secure maintenance of this information is critical to our
business and reputation. Companies have been increasingly subject to a wide variety of security incidents, cyber-attacks and other attempts to gain unauthorized
access. These threats can come from a variety of sources, ranging in sophistication from an individual hacker to a state-sponsored attack. Cyber threats may be
generic, or they may be custom-crafted against our information systems. Over the past few years, cyber-attacks have become more prevalent and much harder to
detect and defend against. Additionally, our increased reliance on personnel working from home could increase our cyber security risk, create data accessibility
concerns,  and  make  us  more  susceptible  to  communication  disruptions,  any  of  which  could  adversely  impact  our  business  operations  or  delay  necessary
interactions with regulators, CROs, clinical trial sites or third-party manufacturing and supply partners.

Our network and storage applications and those of CROs and other third parties may be subject to unauthorized access by hackers or breached due to operator
error, malfeasance or other system disruptions. We have experienced and may in the future experience such unauthorized access. While we continue to invest in
data  protection  and  information  technology,  including  providing  an  information  security  training  and  compliance  program  to  our  employees,  there  can  be  no
assurance  that  our  efforts  will  prevent  service  interruptions  or  identify  breaches  in  our  systems.  It  is  often  difficult  to  anticipate  or  immediately  detect  such
incidents  and  the  damage  caused  by  them.  These  data  breaches  and  any  unauthorized  access  or  disclosure  of  our  information  or  intellectual  property  could
compromise  our  intellectual  property  and  expose  sensitive  business  information.  A  security  breach,  cyber-attack  or  unauthorized  access  of  our  clinical  data  or
other data could damage the integrity of our clinical trials, impact our regulatory filings, cause significant risk to our business, compromise our ability to protect
our intellectual property, and subject us to regulatory actions, including under privacy or security rules under federal, state or other international laws protecting
confidential information, that could be expensive to defend and could result in significant fines or other penalties. Although we maintain a cyber risk management
insurance policy, cyber-attacks could cause us to incur significant remediation costs, disrupt key business operations and divert attention of management and key
information  technology  resources.  Furthermore,  our  insurance  premiums  increase  annually,  and  such  insurance  may  not  continue  to  be  available  on  reasonable
terms  or  be  sufficient  in  amount  to  cover  one  or  more  large  claims.  Our  network  security  and  data  recovery  measures  and  those  of  our  CROs,  licensees,
collaborators, contractors and vendors may not be adequate to protect against such security breaches and disruptions.

We, or the third parties upon whom we depend, may be adversely affected by unforeseen or catastrophic events, including the emergence of a pandemic or
other natural disasters, and our business continuity and disaster recovery plans may not adequately protect us from a serious disaster.

The COVID-19 pandemic has had adverse effects on our business, including difficulty sourcing the components of sample collection kits for our clinical trials, and
may have further adverse effects, the extent or nature of which we are not able to predict at this time. In addition, other unforeseen or catastrophic events could
severely disrupt our operations and our supply chain, and have a material adverse effect on our business. If a natural disaster, power outage, weather event related
to climate change or other event occurred that damaged critical infrastructure, such as our headquarters or the manufacturing facilities of our third-party contract
manufacturers, or that otherwise disrupted operations, it may be difficult or, in certain cases, impossible for us to continue our business for a substantial period of
time. The disaster recovery and business continuity plans we have in place may prove inadequate in the event of a serious disaster or similar event. We may incur
substantial expenses as a result of the limited nature of our disaster recovery and business continuity plans, which, could have a material adverse effect on our
business.

Unstable market and economic conditions may have serious adverse consequences on our business, financial condition and stock price.

Our general business strategy may be adversely affected by any economic downturn, volatile business environment or unpredictable and unstable conditions in
global credit and financial markets. We cannot assure stockholders that deterioration of the global credit and financial markets would not negatively impact our
stock price, our current portfolio of cash equivalents or investments, or our ability to meet our financing objectives. Foreign currency fluctuations could result
in increased operating expenses and other obligations incident to doing business in another country. If the current equity and credit markets deteriorate, it may
make any necessary debt or equity financing more difficult, more costly, and more dilutive. Failure to secure

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any necessary financing in a timely manner and on favorable terms could have a material adverse effect on our growth strategy, financial performance and stock
price and could require us to delay or abandon clinical development plans.

Risks Related to our Common Stock

The price of our common stock may be volatile and fluctuate substantially, which could result in substantial losses for purchasers of our common stock.

Our stock price has been and is likely to continue to be volatile. For example, during 2021, our stock price ranged from $5.03 to $14.84. The stock market in
general  and  the  market  for  biopharmaceutical  companies  in  particular  have  experienced  extreme  volatility  that  has  often  been  unrelated  to  the  operating
performance of particular companies. As a result, we may face difficulties raising capital through sales of our common stock or such sales may be on unfavorable
terms. The market price for our common stock may be influenced by many factors, including:

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the success of competitive products or technologies;

results of our clinical trials or those of our competitors;

regulatory or legal developments in the United States and other countries;

developments or disputes concerning patent applications, issued patents or other proprietary rights;

the recruitment or departure of key personnel;

the level of expenses related to our product candidates or clinical development programs;

the results of our efforts to discover, develop, acquire or in-license additional product candidates or drugs;

actual or anticipated changes in estimates as to financial results, development timelines or recommendations by securities analysts;

variations in our financial results or those of companies that are perceived to be similar to us;

changes in the structure of healthcare payment systems;

market conditions in the pharmaceutical and biotechnology sectors;

general economic, industry and market conditions; and

the other factors described in this “Risk Factors” section.

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. Any return to stockholders will therefore be limited to the appreciation of their stock.

Our ability to utilize our net operating loss carryforwards and certain other tax attributes has been limited by “ownership changes” and may be further limited.

Under  Section  382  of  the  Internal  Revenue  Code  of  1986,  as  amended,  or  the  IRC,  if  a  corporation  undergoes  an  “ownership  change”  (generally  defined  as  a
greater than 50 percent change (by value) in the ownership of its equity over a three-year period), the corporation’s ability to use its pre-change net operating loss,
or NOL, carryforwards and certain other pre-change tax attributes to offset its post-change income may be limited. An IRC Section 382 study, completed in August
2016,  identified  three  previous  ownership  changes  for  purposes  of  IRC  Section  382.  No  additional  ownership  changes  were  identified  in  a  study  completed  in
November  2021.  As  a  result  of  these  ownership  changes,  our  net  operating  loss  and  tax  credit  carryforwards  allocable  to  the  periods  preceding  each  such
ownership change are subject to limitations under IRC Section 382. We may experience ownership changes in the future as a result subsequent shifts in our stock
ownership, some of which are outside our control, which may also be subject to limitations by “ownership changes” in the future, which could result in increased
tax liability to us.

There  is  also  a  risk  that  due  to  regulatory  changes,  such  as  suspensions  on  the  use  of  NOLs,  or  other  unforeseen  reasons,  our  existing  NOLs  could  expire  or
otherwise become unavailable to offset future income tax liabilities. As described below in “Changes in tax laws or in their implementation or interpretation may
adversely  affect  our  business  and  financial  condition,”  the  Tax  Act,  as  amended  by  the  Coronavirus  Aid,  Relief,  and  Economic  Security  Act,  or  CARES  Act,
includes changes to U.S. federal tax rates and the rules governing NOL carryforwards that may significantly impact our ability to utilize our NOLs to offset taxable
income in the future. In addition, state NOLs generated in one state cannot be used to offset income generated in

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another state. For these reasons, even if we attain profitability, we may be unable to use a material portion of our NOLs and other tax attributes.

Changes in tax laws or in their implementation or interpretation may adversely affect our business and financial condition.

Changes in tax law may adversely affect our business or financial condition. On December 22, 2017, the U.S. government enacted the Tax Act, which significantly
reformed the IRC. The Tax Act, among other things, contained significant changes to corporate taxation, including a reduction of the corporate tax rate from a top
marginal rate of 35% to a flat rate of 21%, the limitation of the tax deduction for net interest expense to 30% of adjusted taxable income (except for certain small
businesses),  the  limitation  of  the  deduction  for  NOLs  arising  in  taxable  years  beginning  after  December  31,  2017  to  80%  of  current  year  taxable  income  and
elimination of net operating loss carrybacks for losses arising in taxable years ending after December 31, 2017 (though any such NOLs may be carried forward
indefinitely), the imposition of a one-time taxation of offshore earnings at reduced rates regardless of whether they are repatriated, the elimination of U.S. tax on
foreign  earnings  (subject  to  certain  important  exceptions),  the  allowance  of  immediate  deductions  for  certain  new  investments  instead  of  deductions  for
depreciation expense over time, and the modification or repeal of many business deductions and credits.

As part of Congress’s response to the COVID-19 pandemic, the Families First Coronavirus Response Act, or FFCR Act, was enacted on March 18, 2020, and the
CARES Act was enacted on March 27, 2020. Both contain numerous tax provisions. In particular, the CARES Act retroactively and temporarily (for taxable years
beginning before January 1, 2021) suspends application of the 80%-of-income limitation on the use of NOLs, which was enacted as part of the Tax Act. It also
provides that NOLs arising in any taxable year beginning after December 31, 2017, and before January 1, 2021 are generally eligible to be carried back up to five
years. The CARES Act also temporarily (for taxable years beginning in 2019 or 2020) relaxes the limitation of the tax deductibility for net interest expense by
increasing the limitation from 30% to 50% of adjusted taxable income.

Regulatory guidance under the Tax Act, the FFCR Act and the CARES Act is and continues to be forthcoming, and such guidance could ultimately increase or
lessen impact of these laws on our business and financial condition. In addition, state tax legislation or administrative guidance conforming to or decoupling from
particular provisions of the Tax Act, the FFCR Act and the CARES Act could affect our business or financial condition.

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

As a public company, we are incurring and will continue to incur significant legal, accounting and other expenses, particularly after we are no longer an emerging
growth company. We are subject to the reporting requirements of the Securities Exchange Act of 1934, as amended, as well as various requirements imposed by
the Sarbanes-Oxley Act, rules subsequently adopted by the SEC and Nasdaq to implement provisions of the Sarbanes-Oxley Act, and the Dodd-Frank Wall Street
Reform  and  Consumer  Protection  Act.  Stockholder  activism,  the  current  political  environment  and  the  current  high  level  of  government  intervention  and
regulatory reform may lead to substantial new regulations and disclosure obligations, which may lead to additional compliance costs and impact the manner in
which we operate our business in ways we cannot currently anticipate.

Our  management  and  other  personnel  will  need  to  continue  to  devote  a  substantial  amount  of  time  to  these  compliance  initiatives.  Moreover,  these  rules  and
regulations will increase our legal and financial compliance costs and make some activities more time-consuming and costly. For example, we expect these rules
and regulations to make it more difficult and more expensive for us to obtain director and officer liability insurance, and we may be required to incur substantial
costs  to  maintain  the  same  or  similar  coverage.  We  cannot  predict  or  estimate  the  amount  or  timing  of  additional  costs  we  may  incur  to  respond  to  these
requirements. The impact of these requirements could also make it more difficult for us to attract and retain qualified persons to serve on our board of directors,
our board committees or as executive officers.

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

Certain stockholders hold a substantial number of shares of our common stock. If such stockholders sell, or indicate an intention to sell, substantial amounts of our
common stock in the public market, the trading price of our common stock could decline.

In  addition,  shares  of  common  stock  that  are  either  subject  to  outstanding  options  or  reserved  for  future  issuance  under  our  stock  incentive  plans  will  become
eligible for sale in the public market extent permitted by the provisions of various vesting schedules and Rule 144 and Rule 701 under the Securities Act of 1933,
as amended, or the Securities Act, and, in any event, we have filed a registration statement permitting shares of common stock issued on exercise of options to be
freely sold in the public market. If these additional shares of common stock are sold, or if it is perceived that they will be sold, in the public market, the trading
price of our common stock could decline.

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Certain holders of our common stock are entitled to rights with respect to the registration of their shares under the Securities Act. Registration of these shares
under the Securities Act would result in the shares becoming freely tradable without restriction under the Securities Act, except for shares held by affiliates. Any
sales of securities by these stockholders who have exercised registration rights could have a material adverse effect on the trading price of our common stock.

Our operating results may fluctuate significantly, which makes our future operating results difficult to predict and could cause our operating results to fall
below expectations or our guidance.

Our quarterly and annual operating results may fluctuate significantly, which makes it difficult for us to predict our future operating results. From time to time, we
may enter into license or collaboration agreements with other companies that include development funding and significant upfront and milestone payments and/or
royalties,  which  may  become  an  important  source  of  our  revenue.  Accordingly,  our  revenue  may  depend  on  development  funding  and  the  achievement  of
development  and  clinical  milestones  under  current  and  any  potential  future  license  and  collaboration  agreements  and  sales  of  our  products,  if  approved.  These
upfront and milestone payments may vary significantly from period to period and any such variance could cause a significant fluctuation in our operating results
from one period to the next.

Furthermore,  our  operating  results  may  fluctuate  due  to  a  variety  of  other  factors,  many  of  which  are  outside  of  our  control  and  may  be  difficult  to  predict,
including the following:

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

the timing and cost of, and level of investment in, research and development activities relating to our current and future product candidates, which will
change from time to time;

our ability to enroll patients in clinical trials and the timing of enrollment;

the cost of manufacturing our current and future product candidates, which may vary depending on FDA guidelines and requirements, the quantity of
production and the terms of our agreements with manufacturers;

expenditures that we will or may incur to acquire or develop additional product candidates and technologies;

the timing and outcomes of clinical trials for our current product candidates or competing product candidates;

competition from existing and future products that may compete with our current and future product candidates, and changes in the competitive landscape
of our industry, including consolidation among our competitors or partners;

any delays in regulatory review or approval of any of our current or future product candidates;

the level of demand for our current and future product candidates, if approved, which may fluctuate significantly and be difficult to predict;

our ability to commercialize our current and future product candidates, if approved;

the success of our exclusive license to Gilead and our ability to establish and maintain other collaborations, licensing or other arrangements;

our ability to adequately support future growth;

potential unforeseen business disruptions that increase our costs or expenses;

future accounting pronouncements or changes in our accounting policies;

the impact of the COVID-19 pandemic, including precautions to mitigate the spread of COVID-19; and

the changing and volatile global economic environment.

The cumulative effect of these factors could result in large fluctuations and unpredictability in our quarterly and annual operating results. As a result, comparing
our operating results on a period-to-period basis may not be meaningful. Investors should not rely on our past results as an indication of our future performance. If
our revenue or operating results fall below the expectations of analysts or investors or below any forecasts we may provide to the market, or if the forecasts we
provide to the market are below the expectations of analysts or investors, the price of our common stock could decline substantially. Such a stock price decline
could occur even when we have met any previously publicly stated revenue and/or earnings guidance we may provide.

Moreover, securities class action litigation has often been brought against a company following a decline in the market price of its securities. This risk is especially
relevant  for  us  as  pharmaceutical  companies  have  experienced  significant  stock  price  volatility  in  recent  years.  If  we  face  such  litigation,  it  could  result  in
substantial costs and a diversion of management’s attention and resources.

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

The trading market for our common stock will rely, in part, on the research and reports that industry or financial analysts publish about us or our business. If one or
more of the analysts covering our business downgrade their evaluations of our stock, the price of our stock could decline. If one or more of these analysts cease to
cover our stock, we could lose visibility in the market for our stock, which, in turn, could cause our stock price to decline.

Anti-takeover provisions in our charter documents and under Delaware law could make an acquisition of us, which may be beneficial to our stockholders,
more difficult and may prevent attempts by our stockholders to replace or remove our current management.

Provisions in our amended and restated certificate of incorporation and amended and restated bylaws may delay or prevent an acquisition of us or a change in our
management. These provisions include a classified board of directors, a prohibition on actions by written consent of our stockholders and the ability of our board
of directors to issue preferred stock without stockholder approval. In addition, because we are incorporated in Delaware, we are governed by the provisions of
Section 203 of the Delaware General Corporation Law, which limits the ability of stockholders owning in excess of 15 percent of our outstanding voting stock to
merge  or  combine  with  us.  Although  we  believe  these  provisions  collectively  provide  for  an  opportunity  to  obtain  greater  value  for  stockholders  by  requiring
potential  acquirors  to  negotiate  with  our  board  of  directors,  they  would  apply  even  if  an  offer  rejected  by  our  board  were  considered  beneficial  by  some
stockholders. In addition, these provisions may frustrate or prevent any attempts by our stockholders to replace or remove our current management by making it
more difficult for stockholders to replace members of our board of directors, which is responsible for appointing the members of our management.

Our bylaws designate the Court of Chancery of the State of Delaware as the sole and exclusive forum for certain types of actions and proceedings that may be
initiated by 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 bylaws, provide that, unless we consent in writing to an alternative forum, the Court of Chancery of the State of Delaware will be the sole and 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 and employees to us or our stockholders, (iii) any action asserting a claim arising pursuant to any provision of the Delaware General Corporation Law, our
certificate of incorporation or our bylaws, or (iv) any action asserting a claim that is governed by the internal affairs doctrine, in each case subject to the Court of
Chancery having personal jurisdiction over the indispensable parties named as defendants therein. Any person purchasing or otherwise acquiring any interest in
any shares of our capital stock shall be deemed to have notice of and to have consented to this provision of our bylaws.

This exclusive forum provision would not apply to suits brought to enforce a duty or liability created by the Securities Exchange Act of 1934, as amended, which
provides  for  exclusive  jurisdiction  of  the  federal  courts.  It  could  apply,  however,  to  a  suit  that  falls  within  one  or  more  of  the  categories  enumerated  in  the
exclusive forum provision and asserts claims under the Securities Act, inasmuch as Section 22 of the Securities Act creates concurrent jurisdiction for federal and
state courts over all suits brought to enforce any duty or liability created by the Securities Act or the rules and regulations thereunder, provided, that with respect to
claims under the Securities Act, our stockholders will not be deemed to have waived our compliance with the federal securities laws and the rules and regulations
thereunder.

This choice of forum provision 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 employees, which may discourage such lawsuits against us and our directors, officers and employees even though an action, if successful, might benefit
our stockholders. Stockholders who do bring a claim in the Court of Chancery could face additional litigation costs in pursuing any such claim, particularly if they
do not reside in or near the State of Delaware. The Court of Chancery may also reach different judgments or results than would other courts, including courts
where a stockholder considering an action may be located or would otherwise choose to bring the action, and such judgments or results may be more favorable to
us  than  to  our  stockholders.  Alternatively,  if  a  court  were  to  find  this  provision  of  our  amended  and  restated  certificate  of  incorporation  inapplicable  to,  or
unenforceable in respect of, one or more of the specified types of actions or proceedings, we may incur additional costs, which could have a material adverse effect
on our business, financial condition or results of operations.

Item 1B. Unresolved Staff Comments

Not applicable.

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Item 2. Properties

We  lease  a  facility  containing  our  research  and  development,  laboratory  and  office  space,  which  consists  of  approximately  51,000  square  feet  located  at
780 Memorial Drive, Cambridge, Massachusetts. Our lease expires on March 31, 2025. This facility is our corporate headquarters. We believe that our facilities are
sufficient to meet our current needs.

Item 3. Legal Proceedings

We are not currently a party to any material legal proceedings.

Item 4. Mine Safety Disclosures

Not applicable.

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PART II

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

Market Information and Holders

Our common stock trades on the Nasdaq Global Select Market under the symbol “JNCE”. As of February 28, 2022, we had approximately 13 holders of record of
our common stock. This number does not include beneficial owners whose shares were held by nominees in street name.

Dividend Policy

We have never declared or paid cash dividends on our capital stock. We currently intend to retain all available funds and any future earnings, if any, to fund the
development  and  expansion  of  our  business  and  we  do  not  anticipate  paying  any  cash  dividends  in  the  foreseeable  future.  Any  future  determination  to  pay
dividends will be made at the discretion of our board of directors and will depend on various factors, including applicable laws, our results of operations, financial
condition, future prospects, then applicable contractual restrictions and any other factors deemed relevant by our board of directors. Investors should not purchase
our common stock with the expectation of receiving cash dividends.

Recent Sales of Unregistered Securities

None.

Purchase of Equity Securities

We did not purchase any of our registered equity securities during the period covered by this Annual Report on Form 10‑K.

Item 6. [Reserved]

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

The following discussion and analysis of our financial condition and results of operations should be read together with our consolidated financial statements and
related  notes  appearing  elsewhere  in  this  Annual  Report  on  Form  10-K.  In  addition  to  historical  information,  this  discussion  and  analysis  contains  forward-
looking  statements  that  involve  risks,  uncertainties  and  assumptions.  Our  actual  results  may  differ  materially  from  those  anticipated  in  these  forward-looking
statements  as  a  result  of  certain  factors.  We  discuss  factors  that  we  believe  could  cause  or  contribute  to  these  differences  below  and  elsewhere  in  this  Annual
Report on Form 10-K, including those factors set forth in the section entitled “Cautionary Note Regarding Forward-Looking Statements and Industry Data” and
in the section entitled “Risk Factors” in Part I, Item 1A.

Overview

We  are  a  clinical-stage  immunotherapy  company  dedicated  to  transforming  the  treatment  of  cancer  by  developing  therapies  that  enable  the  immune  system  to
attack tumors and provide long-lasting benefits to patients. Our strategy is to use a biomarker-driven approach from discovery through clinical development. We
have developed a suite of integrated technologies that comprise our Translational Science Platform, enabling us to comprehensively interrogate the cellular and
molecular composition of tumors. By focusing on specific cell types, both immune and non-immune, within tumors, we can prioritize targets and then identify
related biomarkers designed to match the right therapy to the right patient. Our pipeline is focused on product candidates to address PD-(L)1-inhibitor resistant and
PD-(L)1 inhibitor sensitive tumors, which represent significant opportunities requiring different biological approaches. We aim to develop product candidates that
address the unmet medical need of patients in both of these populations.

Our highest priority program, JTX-8064, is being developed for patients with either PD-(L)1-inhibitor resistant or PD-(L)1 inhibitor sensitive tumors. JTX-8064 is
the first tumor-associated macrophage candidate to emerge from our Translational Science Platform. JTX-8064 is a monoclonal antibody that binds to Leukocyte
Immunoglobulin Like Receptor B2, or LILRB2 (also known as ILT4), which is a cell surface receptor expressed on macrophages and other myeloid cells. Our
INNATE clinical trial is a Phase 1/2 clinical trial of JTX-8064 as a monotherapy and in combination with our PD-1 inhibitor, pimivalimab, in patients with solid
tumors. In January 2021, we began enrollment in the dose-escalation portion of the INNATE trial and enrollment was completed in July and October 2021 for
monotherapy and combination therapy, respectively. JTX-8064 has been well-tolerated to date with no observed dose limiting toxicities. We selected 700 mg as
our recommended phase 2 dose for further evaluation. We initiated enrollment in August 2021 and October 2021 in the phase 2 monotherapy and combination
therapy portions, respectively. The INNATE trial is comprised of one monotherapy and seven combination indication-specific expansion cohorts and is designed to
demonstrate proof-of-concept. Once proof-of-concept is established, we plan to move JTX-8064 rapidly into registrational trials on a cohort by cohort basis.

The  expansion  cohorts  are  studying  tumor  types  in  three  groups  of  patients:  (i)  PD-(L)1  inhibitor  experienced  patients  whose  tumors  progressed  on  or  after
treatment with a PD-(L)1 inhibitor (including, non-small cell lung cancer, or NSCLC), (ii) PD-(L)1 inhibitor naïve patients whose tumors are historically resistant
to  PD-(L)1  inhibitors  (including,  ovarian  cancer),  and  (iii)  PD-(L)1  inhibitor  naïve  patients  whose  tumors  are  historically  more  sensitive  to  PD-(L)1  inhibitors
(including, front line PD-L1 positive head and neck squamous cell carcinoma). Proof-of concept expansion cohorts have the potential to enroll up to 29 patients
per combination therapy cohort and 47 patients in the monotherapy cohort if pre-specified criteria are met. We expect to report preliminary clinical and biomarker
data from INNATE in 2022.

Vopratelimab is a clinical-stage monoclonal antibody that binds to and activates the Inducible T cell CO-Stimulator, or ICOS, a protein on the surface of certain T
cells  commonly  found  in  many  solid  tumors.  We  are  currently  enrolling  patients  in  the  SELECT  trial,  a  randomized  phase  2  proof-of-concept  trial  outside  the
United States evaluating vopratelimab in combination with pimivalimab compared to pimivalimab alone in biomarker-selected, immunotherapy-naive second-line
vopra
NSCLC patients. We identify patients for SELECT using TIS
has been optimized to predict for emergence of ICOS hi CD4 T cells in the peripheral blood, which have been associated with clinical benefit in patients treated
with vopratelimab alone or in combination with nivolumab. We expect to report complete clinical data from SELECT in the second half of 2022.

, an 18 gene signature that includes genes relevant to both CD8 and CD4 T cell biology. TIS

vopra

Pimivalimab is a clinical-stage anti-PD-1 monoclonal antibody that we are developing primarily for potential use in combination with our product candidates, as
we  believe  that  combination  therapy  has  the  potential  to  be  a  mainstay  of  cancer  immunotherapy.  We  presented  safety  and  preliminary  efficacy  data  from  our
monotherapy Phase 1 clinical trial of pimivalimab in 2019. Based on the results of that clinical trial, we are using pimivalimab in combination with JTX-8064 in
INNATE and vopratelimab in SELECT.

GS-1811, formerly JTX-1811, is our fourth internally developed program to enter the clinic. In August 2020, we entered into an agreement to exclusively license
GS-1811  to  Gilead  Sciences,  Inc.,  or  Gilead.  GS-1811  is  a  monoclonal  antibody  that  is  designed  to  selectively  deplete  T  regulatory  cells  in  the  tumor
microenvironment, or TME, by targeting a receptor called CCR8, which is preferentially expressed on intra-tumoral T regulatory cells. Pursuant to our exclusive
license agreement with Gilead,

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or the Gilead License Agreement, we granted Gilead a worldwide license to develop, manufacture and commercialize GS-1811 and certain derivatives thereof, as
well as backup antibodies defined within the agreement. Under the terms of the Gilead License Agreement, we advanced GS-1811 through the clearance of an
investigational new drug application, or IND, in June 2021, which triggered a $25.0 million milestone payment in July 2021, and have transitioned the program to
Gilead. Gilead initiated clinical trials of GS-1811 in August 2021. We are entitled to receive additional payments from Gilead upon the achievement of specified
clinical, regulatory and sales milestones. We are also eligible to receive tiered royalty payments based on a percentage of annual worldwide net sales ranging from
the high-single digits to mid-teens, based on future annual net sales of licensed products, on a licensed product-by-licensed product and country-by-country basis.

JTX-1484 is the most recent product candidate to emerge from our Translational Science Platform. JTX-1484 is a monoclonal antibody designed to block human
LILRB4  on  various  myeloid  cells  which  we  believe  may  lead  to  reduced  immune  suppression  and  enhancement  of  T  cell  functionality.  We  are  currently
conducting IND-enabling activities for JTX-1484, with the goal of filing an IND in 2023.

With our biomarker-driven approach, we leverage our Translational Science Platform to interrogate cell types within the human TME and to identify and prioritize
targets across a broad spectrum of immune and non-immune cell types. In addition, early in the development process, we use our Translational Science Platform to
identify  potential  predictive  biomarkers  to  enable  us  to  enrich  our  clinical  trials  for  patient  populations  that  may  be  more  likely  to  respond  to  a  particular
immunotherapy. Once clinical data is available for a product candidate, we then use a reverse translational approach to interrogate tumor and blood samples from
patients with known outcomes. By using these reverse translational findings, we believe we are better able to design clinical trials and more efficiently develop
cancer immunotherapies that potentially provide greater benefit to patients. These biomarker results, coordinated to clinical response, will assist with determining
the benefit of proceeding to the use of a companion diagnostic and/or complementary diagnostic for a given therapy.

Beyond our product candidates, we continue to advance and build our discovery pipeline. We are discovering and developing next-generation immunotherapies by
leveraging  our  Translational  Science  Platform  to  systematically  and  comprehensively  interrogate  cell  types  within  the  tumor  microenvironment.  Our  broad
discovery pipeline includes multiple programs targeting myeloid cells such as macrophages, T regulatory cells and non-immune cells. We believe that the use of
our  Translational  Science  Platform  to  efficiently  identify  novel  immuno-oncology  targets  and  advance  them  from  discovery  to  investigational  new  drug
application, or IND, stage is a sustainable approach that we plan to continually apply across our broad discovery pipeline and target selection process.

Since  inception,  our  operations  have  focused  on  organizing  and  staffing  our  company,  business  planning,  raising  capital,  developing  our  Translational  Science
Platform  and  conducting  research,  preclinical  studies  and  clinical  trials.  We  do  not  have  any  products  approved  for  sale.  We  are  subject  to  a  number  of  risks
comparable to those of other similar companies, including dependence on key individuals; the need to develop commercially viable products; competition from
other companies, many of which are larger and better capitalized; and the need to obtain adequate additional financing to fund the development of our products.
We  have  funded  our  operations  primarily  through  proceeds  received  from  public  offerings  and  private  placements  of  our  stock  totaling  $389.5  million  and
payments from license and collaboration agreements totaling $385.0 million.

Due to our significant research and development expenditures, we have accumulated substantial losses since our inception. As of December 31, 2021, we had an
accumulated deficit of $241.9 million. We expect to incur substantial additional losses in the future as we expand our research and development activities.

The spread of COVID-19 during 2020 and 2021 has caused disruption on a global scale and we continue to monitor the impacts of the COVID-19 pandemic on
our business. As of March 2, 2022, we have not experienced a significant financial impact directly related to the COVID-19 pandemic but have experienced some
disruptions  to  clinical  operations  and  to  our  supply  chain.  As  the  pandemic  continues  to  unfold,  the  extent  of  its  effect  on  our  operational  and  financial
performance will depend in large part on future developments, which cannot be predicted with confidence at this time.

Financial Operations Overview

Revenue

For the year ended December 31, 2021, we recognized $26.9 million of license and collaboration revenue under the Gilead License Agreement primarily relating
to a $25.0 million milestone achievement for FDA clearance of the IND for GS-1811 and $1.9 million related to the completion of research and transition services.
For the year ended December 31, 2020, we recognized $62.3 million of license and collaboration revenue under the Gilead License Agreement for the GS-1811
license and performance of research and transition services.

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In  the  future,  we  may  generate  revenue  from  product  sales  or  collaboration  agreements,  strategic  alliances  and  licensing  arrangements,  including  potential
milestone payments and royalties under the Gilead License Agreement. We expect that our revenue will fluctuate from quarter-to-quarter and year-to-year as a
result  of  the  timing  and  amount  of  license  fees,  milestones,  reimbursement  of  costs  incurred  and  other  payments,  if  any,  and  product  sales,  to  the  extent  any
products are successfully commercialized. If we or third parties fail to complete the development of our product candidates in a timely manner or obtain regulatory
approval for them, our ability to generate future revenue, and our results of operations and financial position, would be materially adversely affected.

Operating Expenses

Research and Development Expenses

Research and development expenses represent costs incurred by us for the discovery, development and manufacture of our current and future product candidates
and  include:  external  research  and  development  expenses  incurred  under  arrangements  with  third  parties,  including  contract  research  organizations,  contract
manufacturing  organizations,  academic  and  non-profit  institutions  and  consultants;  salaries  and  personnel-related  costs,  including  non-cash  stock-based
compensation expense; license fees to acquire in-process technology and other expenses, which include direct and allocated expenses for laboratory, facilities and
other costs.

We  use  our  employee  and  infrastructure  resources  across  multiple  research  and  development  programs  and  for  identifying,  testing  and  developing  product
candidates  from  our  Translational  Science  Platform.  We  manage  certain  activities  such  as  contract  research  and  manufacture  of  our  product  candidates  and
discovery programs through our third-party vendors.

At this time, we cannot reasonably estimate or know the nature, timing and estimated costs of the efforts that will be necessary to complete the development of our
product candidates. We are also unable to predict when, if ever, material net cash inflows will commence from sales of our product candidates. This is due to the
numerous risks and uncertainties associated with developing such product candidates, including the uncertainty of:

•

•

•

•

•

•

•

•

•

•

•

•

addition and retention of key research and development personnel;

establishing an appropriate safety profile with IND-enabling toxicology studies and clinical trials;

the cost to acquire or make therapies to study in combination with our immunotherapies;

successful enrollment in and completion of clinical trials, including the impacts of the COVID-19 pandemic on the timing and progress of our ongoing
and planned clinical trials;

establishing agreements with third-party contract manufacturing organizations for clinical supply for our clinical trials and commercial manufacturing, if
our product candidates are approved;

receipt of marketing approvals from applicable regulatory authorities;

commercializing products, if and when approved, whether alone or in collaboration with others;

the cost to develop companion diagnostics and/or complementary diagnostics as needed for each of our development programs;

the costs associated with the development of any additional product candidates we acquire through third-party collaborations or identify through our
Translational Science Platform;

the terms and timing of any collaboration, license or other arrangement, including any milestone payments thereunder;

obtaining and maintaining patent and trade secret protection and regulatory exclusivity for our products, if and when approved; and

continued acceptable safety profiles of the products following approval.

A change in the outcome of any of these variables with respect to the development of any of our product candidates would significantly change the costs, timing
and viability associated with the development of that product candidate. We plan to increase our research and development expenses for the foreseeable future as
we advance our product candidates through clinical trials and continue the enhancement of our Translational Science Platform and the progression of our pipeline.

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Due to the inherently unpredictable nature of preclinical and clinical development, we do not allocate all of our internal research and development expenses on a
program-by-program basis as they primarily relate to personnel and lab consumables costs that are deployed across multiple programs under development. Our
research  and  development  expenses  also  include  external  costs,  which  we  do  track  on  a  program-by-program  basis  following  the  program’s  nomination  as  a
development candidate. We began incurring such external costs for vopratelimab in 2015, pimivalimab in 2016, JTX-8064 in 2017, GS-1811 in 2019 and JTX-
1484 in 2021.

Included below are external research and development and external clinical and regulatory costs for JTX-8064, vopratelimab (which includes our SELECT trial),
pimivalimab, GS-1811, JTX-1484 and our pre-development candidates:

(in thousands)
Vopratelimab
JTX-8064
Pimivalimab
GS-1811
JTX-1484
Pre-development candidates

Total external research and development and clinical and regulatory costs

Year Ended December 31,

2021

2020

$

$

18,942  $
18,903 
2,603 
2,405 
170 
1,683 
44,706  $

24,117 
1,674 
2,866 
7,007 
— 
1,328 
36,992 

Research and development activities account for a significant portion of our operating expenses. As we continue to implement our business strategy, we expect our
research and development expenses to increase over the next several years. We expect that these expenses will increase as we:

•

•

•

•

•

continue our clinical development of JTX-8064, including our INNATE trial as a monotherapy and in combination with pimivalimab;

continue our clinical development of vopratelimab, including our SELECT trial of vopratelimab and pimivalimab;

continue advancing programs through IND-enabling activities;

continue  to  identify  and  develop  potential  predictive  biomarkers  and  companion  diagnostics  and/or  complementary  diagnostics  for  our  product
candidates; and

continue  to  develop  and  enhance  our  Translational  Science  Platform  and  advance  our  pipeline  of  immunotherapy  programs  and  our  early  research
activities into IND-enabling activities.

Product candidates in later stages of clinical development generally incur higher development costs than those in earlier stages of clinical development, primarily
due to the increased size and duration of later-stage clinical trials.

General and Administrative Expenses

General and administrative expenses consist of salaries and personnel-related costs, including non-cash stock-based compensation expense, for our personnel in
executive, business development, legal, finance and accounting, human resources and other administrative functions, consulting fees, facility costs not otherwise
included  in  research  and  development  expenses,  fees  paid  for  accounting  and  tax  services,  insurance  expenses  and  legal  costs.  Legal  costs  include  general
corporate  legal  fees,  patent  legal  fees  and  related  costs.  We  anticipate  that  our  general  and  administrative  expenses  will  increase  in  the  future  to  support  our
continued operations.

Other Income, Net

Other income, net, consists primarily of interest and investment income on our cash, cash equivalents and investments.

Critical Accounting Policies and Estimates

Our management’s discussion and analysis of our financial condition and results of operations is based on our consolidated financial statements, which have been
prepared in accordance with generally accepted accounting principles in the United States. The preparation of these consolidated financial statements requires us to
make  estimates  and  assumptions  that  affect  the  amounts  reported  in  the  financial  statements  and  accompanying  notes.  We  base  our  estimates  on  historical
experience, known facts and trends, and other market specific or relevant assumptions we believe to be reasonable under the circumstances. On an ongoing basis,
we evaluate our estimates in light of changes in circumstance, facts or experience. Actual results may differ from these estimates under different assumptions or
conditions.

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While our significant accounting policies are described in more detail in the notes to our consolidated financial statements appearing elsewhere in this Annual
Report on Form 10-K, we believe the following accounting policies to be most critical to the judgments and estimates used in the preparation of our consolidated
financial statements.

Revenue Recognition

We recognize revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers, or ASC 606. Under ASC 606, an entity recognizes revenue
when its customer obtains control of promised goods or services, in an amount that reflects the consideration that the entity expects to receive in exchange for
those  goods  or  services.  In  applying  ASC  606,  we  perform  the  following  five  steps:  (i)  identify  the  contract(s)  with  a  customer;  (ii)  identify  the  promises  and
performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and
(v) recognize revenue when (or as) we satisfy the performance obligations. At contract inception, once the contract is determined to be within the scope of ASC
606, we assess the goods or services promised within each contract, determine those that are performance obligations and assess whether each promised good or
service is distinct. We then recognize as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the
performance obligation is satisfied.

The terms of our license agreements include upfront and license fees, milestones and other contingent payments for the achievement of defined certain clinical,
regulatory and sales-based milestone events, as well as royalties on sales of commercialized products. Arrangements that include upfront payments may require
deferral of revenue recognition to a future period until obligations under such arrangements are fulfilled. The event-based milestone payments represent variable
consideration, and we use the “most likely amount” method to estimate this variable consideration. Given the high degree of uncertainty around the occurrence of
these events, we determined the milestone and other contingent amounts to be fully constrained until the uncertainty associated with these payments is resolved.
Revenue will be recognized from sales-based royalty payments when or as the sales occur. We will re-evaluate the transaction price in each reporting period as
uncertain events are resolved and other changes in circumstances occur.

Accrued Research and Development Expenses

As part of the process of preparing our consolidated financial statements, we are required to estimate our accrued research and development expenses as of each
balance sheet date. In accruing service fees, we estimate the time period over which services will be performed and the level of effort to be expended in each
period. This process involves reviewing open contracts and purchase orders, communicating with internal personnel to identify services that have been performed
on  our  behalf  and  estimating  the  level  of  service  performed  and  the  associated  cost  incurred  for  the  service  when  we  have  not  yet  been  invoiced  or  otherwise
notified of the actual cost. We periodically confirm the accuracy of our estimates with our service providers and make adjustments if necessary. The majority of
our service providers invoice us monthly in arrears for services performed or when contractual milestones are met. The financial terms of agreements with these
service providers are subject to negotiation, vary from contract-to-contract and may result in uneven payment flows. In circumstances where amounts have been
paid in excess of costs incurred, we record a prepaid expense.

Although we do not expect our estimates to be materially different from amounts actually incurred, if our estimates of the status and timing of services performed
differ from the actual status and timing of services performed, it could result in us reporting amounts that are too high or too low in any particular period. To date,
there have been no material differences between our estimates of such expenses and the amounts actually incurred.

Stock-based Compensation

We account for stock-based payments in accordance with ASC Topic 718, Compensation—Stock Compensation. This guidance requires all stock-based payments
to  employees,  including  grants  of  employee  stock  options,  restricted  stock  awards  and  restricted  stock  units,  to  be  recognized  as  expense  in  the  consolidated
statements of operations and comprehensive income (loss) based on their grant date fair values. For stock options granted to employees and to members of our
board of directors for their services on the board of directors, we estimate the grant date fair value of each stock option using the Black-Scholes option-pricing
model. For restricted stock awards and restricted stock units granted to employees, we estimate the grant date fair value of each award using intrinsic value, which
is based on the value of the underlying common stock less any purchase price. For stock-based payments subject to service-based vesting conditions, we recognize
stock-based compensation expense equal to the grant date fair value of stock-based payment on a straight-line basis over the requisite service period. 

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The  Black‑Scholes  option  pricing  model  requires  the  input  of  certain  subjective  assumptions,  including  (i)  the  calculation  of  expected  term  of  the  stock-based
payment, (ii) the risk‑free interest rate, (iii) the expected stock price volatility and (iv) the expected dividend yield. We use the simplified method as prescribed by
SEC Staff Accounting Bulletin No. 107 to calculate the expected term for stock options granted to employees as we do not have sufficient historical exercise data
to  provide  a  reasonable  basis  upon  which  to  estimate  the  expected  term.  We  determine  the  risk‑free  interest  rate  based  on  a  treasury  instrument  whose  term  is
consistent with the expected term of the stock options. Because there had been no public market for our common stock prior to our IPO, there is a lack of historical
and implied volatility data. Accordingly, we base our estimates of expected volatility on a combination of our own historical volatility and historical volatility of a
group  of  publicly-traded  companies  with  characteristics  similar  to  ours,  including  stage  of  product  development  and  therapeutic  focus  within  the  life  sciences
industry. Historical volatility is calculated over a period of time commensurate with the expected term of the stock-based payment. We use an assumed dividend
yield of zero as we have never paid dividends on our common stock, nor do we expect to pay dividends on our common stock in the foreseeable future.

We account for forfeitures of all stock-based payments when such forfeitures occur.

Income Taxes

Income taxes are recorded in accordance with ASC Topic 740, Income Taxes, which provides for deferred taxes using an asset and liability approach. We recognize
deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the consolidated financial statements or tax returns.
Deferred tax assets and liabilities are determined based on the difference between the financial statement and tax bases of assets and liabilities using enacted tax
rates in effect for the year in which the differences are expected to reverse. A valuation allowance against deferred tax assets is recorded if, based on the weight of
the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized.

We account for uncertain tax positions using a more-likely-than-not threshold for recognizing and resolving uncertain tax positions. The evaluation of uncertain tax
positions is based on factors, including, but not limited to, changes in the law, the measurement of tax positions taken or expected to be taken in tax returns, the
effective settlement of matters subject to audit, new audit activity and changes in facts or circumstances related to a tax position.

Results of Operations

Comparison of the Years Ended December 31, 2021 and 2020

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

(in thousands)
Revenue:

License and collaboration revenue—related party

Operating expenses:

Research and development
General and administrative
Total operating expenses

Operating loss
Other income, net          
Loss before provision for income taxes
Provision for income taxes

Net loss

License and Collaboration Revenue

Year Ended December 31,

2021

2020

$ Change

$

$

26,907  $

62,339  $

88,979 
28,984 
117,963 
(91,056)
199 
(90,857)
15 
(90,872) $

78,690 
28,766 
107,456 
(45,117)
1,289 
(43,828)
14 
(43,842) $

(35,432)

10,289 
218 
10,507 
(45,939)
(1,090)
(47,029)
1 
(47,030)

For  the  year  ended  December  31,  2021,  we  recognized  $26.9  million  of  license  and  collaboration  revenue  under  the  Gilead  License  Agreement  related  to  the
achievement  of  a  $25.0  million  clinical  development  and  regulatory  milestone  for  FDA  clearance  of  the  IND  for  GS-1811  and  $1.9  million  related  to  the
completion of research and transition services. For the year ended December 31, 2020, we recognized $62.3 million of license and collaboration revenue under the
Gilead License Agreement for the GS-1811 license and performance of research and transition services.

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Research and Development Expenses

The following table summarizes our research and development expenses for the years ended December 31, 2021 and 2020:

(in thousands)
Employee compensation
External clinical and regulatory
External research and development
Lab consumables
Facility costs
Other research

Total research and development expenses

Year Ended December 31,

2021

2020

$ Change

$

$

30,780  $
27,935 
16,771 
6,151 
5,329 
2,013 
88,979  $

27,880  $
25,340 
11,652 
6,042 
5,522 
2,254 
78,690  $

2,900 
2,595 
5,119 
109 
(193)
(241)
10,289 

Research and development expenses increased by $10.3 million from $78.7 million for the year ended December 31, 2020 to $89.0 million for the year ended
December 31, 2021. The increase in research and development expenses was primarily attributable to:

•

•

•

$2.9 million of increased employee compensation costs primarily attributable to increased payroll and stock-based compensation;

$2.6  million  of  increased  external  clinical  and  regulatory  costs  primarily  attributable  to  increased  costs  for  our  INNATE  and  SELECT  clinical  trials,
partially offset by decreased costs for our Phase 2 EMERGE trial; and

$5.1 million of increased external research and development costs associated with manufacturing activities for our development programs, partially offset
by reduced IND-enabling activities during the year ended December 31, 2021.

General and Administrative Expenses

The following table summarizes our general and administrative expenses for the years ended December 31, 2021 and 2020:

(in thousands)
Employee compensation
Professional services
Facility costs
Other

Total general and administrative expenses

Year Ended December 31,

2021

2020

$ Change

$

$

15,123  $
4,895 
4,133 
4,833 
28,984  $

15,137  $
4,927 
4,332 
4,370 
28,766  $

(14)
(32)
(199)
463 
218 

General  and  administrative  expenses  increased  by  $0.2  million  from  $28.8  million  for  the  year  ended  December  31,  2020  to  $29.0  million  for  the  year  ended
December  31,  2021.  The  increase  in  general  and  administrative  expenses  was  primarily  attributable  to  increased  other  administrative  costs  for  the  year  ended
December 31, 2021.

Other Income, net

Other income, net, decreased by $1.1 million from $1.3 million for the year ended December 31, 2020 to $0.2 million for the year ended December 31, 2021. The
decrease in other income, net is attributable to decreased rates of return on our investments.

Liquidity and Capital Resources

Sources of Liquidity

We  have  funded  our  operations  primarily  through  proceeds  received  from  public  offerings  and  private  placements  of  our  stock  totaling  $389.5  million  and
payments from license and collaboration agreements totaling $385.0 million. As of December 31, 2021, we had cash, cash equivalents and investments of $220.2
million.

On November 4, 2021, we entered into a new Sales Agreement (the “2021 Sales Agreement”) with Cowen and Company, LLC, or Cowen, pursuant to which we
may  offer  and  sell  shares  of  our  common  stock  with  an  aggregate  offering  price  of  up  to  $75.0  million  under  an  ATM  offering  program  (the  “2021  ATM
Offering”). The 2021 Sales Agreement provides that Cowen will be entitled to a sales commission equal to 3.0% of the gross sales price per share of all shares sold
under the 2021 ATM Offering. No sales were made under the 2021 ATM Offering during the year ended December 31, 2021.

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During the first quarter of 2021, we completed a follow-on public offering of its common stock, selling an aggregate of 5,750,000 shares of common stock at a
public offering price of $11.25 per share for net proceeds of $60.6 million.

On December 17, 2019, we entered into a Sales Agreement with Cowen, pursuant to which we could offer and sell shares of our common stock with an aggregate
offering price of up to $50.0 million under an “at the market” offering program (the “2019 ATM Offering”). During the first quarter of 2021, the Company sold an
aggregate of 3,156,200 shares at an average price of $9.87 per share for net proceeds of $30.2 million, which completed the sale of all available amounts under the
2019 ATM Offering.

Funding Requirements

Our  plan  of  operation  is  to  continue  implementing  our  business  strategy,  the  research  and  development  of  our  current  product  candidates,  our  preclinical
development activities, the expansion of our research pipeline and the enhancement of our internal research and development capabilities. Due to the inherently
unpredictable nature of preclinical and clinical development and given the early stage of our programs and product candidates, we cannot reasonably estimate the
costs  we  will  incur  and  the  timelines  that  will  be  required  to  complete  development,  obtain  marketing  approval,  and  commercialize  our  products,  if  and  when
approved. For the same reasons, we are also unable to predict when, if ever, we will generate revenue from product sales or whether, or when, if ever, we may
achieve profitability. Clinical and preclinical development timelines, the probability of success, and development costs can differ materially from expectations. In
addition, we cannot forecast which products, if and when approved, may be subject to future collaborations, when such arrangements will be secured, if at all, and
to what degree such arrangements would affect our development plans and capital requirements.

Due to our significant research and development expenditures, we have generated substantial operating losses since inception. We have incurred an accumulated
deficit of $241.9 million through December 31, 2021. We expect to incur substantial additional losses in the future as we expand our research and development
activities and continue to advance our programs. Based on our research and development plans, we expect that our existing cash, cash equivalents and investments
of  $220.2  million  will  enable  us  to  fund  our  operating  expenses  and  capital  expenditure  requirements  through  the  third  quarter  of  2023  and  we  will  require
additional  funding  to  continue  our  operations  beyond  the  third  quarter  of  2023.  However,  we  have  based  this  estimate  on  assumptions  that  may  prove  to  be
incorrect, and we could exhaust our capital resources sooner than we expect. The timing and amount of our operating expenditures will depend largely on:

•

•

•

•

•

•

•

•

•

•

•

•

the timing and progress of preclinical and clinical development activities, including the impacts of the COVID-19 pandemic on the timing and progress of
our ongoing and planned clinical trials;

the cost to access, acquire or develop therapies to study in combination with our immunotherapies;

successful enrollment in and completion of clinical trials;

the cost to develop companion diagnostics and/or complementary diagnostics as needed for each of our development programs;

our  ability  to  establish  agreements  with  third-party  manufacturers  for  clinical  supply  for  our  clinical  trials  and,  if  any  of  our  product  candidates  are
approved, commercial manufacturing;

the costs associated with the development of any additional product candidates we acquire through acquisition or third-party collaborations or identify
through our Translational Science Platform;

our ability to maintain our current research and development programs and enhancement of our Translational Science Platform;

addition and retention of key research and development personnel;

our  efforts  to  enhance  operational,  financial  and  information  management  systems,  and  hire  additional  personnel,  including  personnel  to  support
development of our product candidates;

the legal patent costs involved in prosecuting patent applications and enforcing patent claims and other intellectual property claims;

the costs and ongoing investments to in-license or acquire additional technologies, including the in-license of intellectual property related to our potential
product candidates; and

the  terms  and  timing  of  any  other  collaboration,  license  or  other  arrangement,  including  the  terms  and  timing  of  any  option  and  milestone  payments
thereunder.

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A change in the outcome of any of these or other variables with respect to the development of any of our product candidates could significantly change the costs
and timing associated with the development of that product candidate. Furthermore, our operating plans may change in the future, and we may need additional
funds to meet operational needs and capital requirements associated with such operating plans.

In  addition  to  the  variables  described  above,  if  and  when  any  of  our  product  candidates  successfully  complete  development,  we  expect  to  incur  substantial
additional costs associated with regulatory filings, marketing approval, post-marketing requirements, maintaining our intellectual property rights, and regulatory
protection, in addition to other costs. We cannot reasonably estimate these costs at this time.

Until such time, if ever, as we can generate substantial product revenue, we expect to finance our cash needs through a combination of equity or debt financings,
collaborations, licensing arrangements and strategic alliances. We currently do not have a credit facility or committed sources of capital. To the extent that we raise
additional capital through the future sale of equity or debt, the ownership interests of our stockholders will be diluted, and the terms of these securities may include
liquidation  or  other  preferences  that  adversely  affect  the  rights  of  our  existing  common  stockholders.  If  we  raise  additional  funds  through  the  issuance  of  debt
securities, these securities could contain covenants that would restrict our operations. We may require additional capital beyond our currently anticipated amounts.
Additional capital may not be available on reasonable terms, or at all. If we raise additional funds through collaboration arrangements in the future, we may have
to relinquish valuable rights to our technologies, future revenue streams or product candidates, or grant licenses on terms that may not be favorable to us. If we are
unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce, or terminate development or future
commercialization efforts, or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.

Cash Flows

The following table provides information regarding our cash flows for the years ended December 31, 2021 and 2020:

(in thousands)
Net cash (used in) provided by:

Operating activities
Investing activities
Financing activities

Net increase in cash, cash equivalents and restricted cash

Cash Used in Operating Activities

Year Ended December 31,

2021

2020

$

$

(83,494) $
(60,514)
92,044 
(51,964) $

(27,788)
51,298 
70,742 
94,252 

Net cash used in operating activities for the year ended December 31, 2021 was $83.5 million, compared to $27.8 million for the year ended December 31, 2020.
Cash used in operating activities increased by $55.7 million due to increased net loss during the year ended December 31, 2021 driven by increased operating
expenses and reduced revenue recognition under the Gilead License Agreement as compared to the year ended December 31, 2020.

Cash (Used in) Provided by Investing Activities

Net  cash  used  in  investing  activities  for  the  year  ended  December  31,  2021  was  $60.5  million,  compared  to  net  cash  provided  by  investing  activities  of  $51.3
million for the year ended December 31, 2020. Cash used in investing activities increased by $111.8 million due to increased purchases of investments as a direct
result of our financing activities during the first quarter of 2021.

Cash Provided by Financing Activities

Net cash provided by financing activities for the year ended December 31, 2021 was $92.0 million, compared to $70.7 million for the year ended December 31,
2020. Cash provided by financing activities increased by $21.3 million due to proceeds received from our follow-on public offering and ATM Offering completed
during the first quarter of 2021.

Item 7A. Quantitative and Qualitative Disclosures about Market Risk

We are a smaller reporting company as defined by Rule 12b-2 of the Securities Exchange Act of 1934, as amended, and are not required to provide the information
under this item.

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Item 8. Financial Statements and Supplementary Data

The financial statements required to be filed pursuant to this Item 8 are appended to this Annual Report on Form 10-K. An index of those financial statements is
found in Part IV, Item 15.

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 our principal financial officer, evaluated the effectiveness of our disclosure controls
and  procedures  as  of  December  31,  2021.  The  term  “disclosure  controls  and  procedures,”  as  defined  in  Rules  13a-15(e)  and  15d-15(e)  under  the  Securities
Exchange Act of 1934, as amended, or the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required
to be disclosed by the 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  Securities  and  Exchange  Commission’s  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, or persons performing similar functions, as
appropriate to allow timely decisions regarding required disclosure. Our management recognizes that any controls and procedures, no matter how well designed
and operated, can provide only reasonable assurance of achieving their objectives and our 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, 2021, our principal
executive officer and principal financial officer concluded that, as of such date, our disclosure controls and procedures were effective at the reasonable assurance
level.

Management’s Report on Internal Control Over Financial Reporting

Our  management  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial  reporting.  Internal  control  over  financial  reporting  is
defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act as a process designed by, or under the supervision of, a company’s principal executive officer
and  principal  financial  officer,  or  persons  performing  similar  functions,  and  effected  by  a  company’s  board  of  directors,  management,  and  other  personnel,  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 and includes those policies and procedures that:

•

•

•

pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of a company’s assets;

provide  reasonable  assurance  that  transactions  are  recorded  as  necessary  to  permit  preparation  of  financial  statements  in  accordance  with  generally
accepted accounting principles, and that a company’s receipts and expenditures are being made only in accordance with authorizations of the company’s
management and directors; and

provide  reasonable  assurance  regarding  prevention  or  timely  detection  of  unauthorized  acquisition,  use  or  disposition  of  our  assets  that  could  have  a
material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness
to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or
procedures may deteriorate.

Under the supervision of and with the participation of our principal executive officer and principal financial officer, our management assessed the effectiveness of
our  internal  control  over  financial  reporting  as  of  December  31,  2021  based  on  the  criteria  set  forth  by  the  Committee  of  Sponsoring  Organizations  of  the
Treadway  Commission  in  Internal  Control—Integrated  Framework  (2013).  Based  on  this  assessment,  management  concluded  that  our  internal  control  over
financial reporting was effective as of December 31, 2021.

This Annual Report on Form 10-K does not include an attestation report of our independent registered public accounting firm due to a transition period established
by rules of the SEC for newly public companies.

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Changes in Internal Control over Financial Reporting

There was no change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15(d)-15(f) under the Exchange Act) that occurred during
the fourth quarter of the year ended December 31, 2021 that has materially affected, or is reasonably likely to materially affect, our internal control over financial
reporting.

Item 9B. Other Information

None.

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Not applicable.

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Item 10. Directors, Executive Officers and Corporate Governance

Board of Directors

Board Composition and Structure

PART III

The Board of Directors is currently comprised of nine members. Below is a list of the names, ages as of February 28, 2022, and classification of the individuals
who currently serve as our directors.

Name
Luis A. Diaz, Jr., M.D.
Barbara Duncan
J. Duncan Higgons
Robert Iannone, M.D., M.S.C.E.
Robert Kamen, Ph.D.
Perry Karsen
Richard Murray, Ph.D.
Jigar Raythatha
Luisa Salter-Cid, Ph.D.

Director Biographies

Age
51
57
67
54
77
66
63
45
57

Position
Director (Class II)
Director (Class II)
Director (Class I)
Director (Class I)
Director (Class II)
Chairman of the Board of Directors (Class III)
Director (Class III); Chief Executive Officer and President
Director (Class III)
Director (Class I)

Luis Diaz, Jr., M.D.—Dr. Diaz has served as the head of the solid tumor oncology division and a faculty member at the Memorial Sloan Kettering Cancer Center
since  December  2016,  and  was  appointed  to  the  National  Cancer  Advisory  Board  in  September  2021.  From  2004  to  December  2016,  Dr.  Diaz  was  a  faculty
member and physician at Johns Hopkins University School of Medicine. He is also a founder and board member, and from 2010 to April 2016 served as president,
chief executive officer and chief medical officer, of Personal Genome Diagnostics Inc., a private cancer genome analysis company. He received his M.D. from the
University of Michigan, where he also received his B.A. in Microbiology. We believe Dr. Diaz is qualified to serve on our board of directors due to his background
as a physician focused on oncology and his experience as a faculty member at a major hospital and medical center.

Barbara Duncan—Ms. Duncan served as the chief financial officer of Intercept Pharmaceuticals Inc., a public biopharmaceutical company, from May 2009 to
June  2016  and  as  treasurer  from  2010  to  June  2016.  She  has  served  on  the  board  of  directors  of  Adaptimmune  Therapeutics  plc  since  June  2016,  Atea
Pharmaceuticals, Inc. since October 2020, Fusion Pharmaceuticals Inc. since October 2020 and Ovid Therapeutics, Inc. since June 2017, each of which is a public
therapeutics company. She previously served on the board of public companies ObsEva SA from December 2016 to May 2021, Immunomedics, Inc. from March
2019 to October 2020, Aevi Genomic Medicine, Inc. (formerly Medgenics, Inc.) from June 2015 to February 2020 and Innoviva, Inc. from September 2016 to
April 2018. Ms. Duncan holds an M.B.A. from the Wharton School of Business and a B.S. from Louisiana State University. We believe Ms. Duncan is qualified to
serve on our board of directors because of her experience in the biopharmaceutical industry, her experience in the financial sector and membership on boards of
directors of other public and private companies.

J. Duncan Higgons—Mr. Higgons served as chief operating officer of Agios Therapeutics, Inc., a public biopharmaceutical company, from 2009 to January 2016.
Mr. Higgons serves on the board of directors of Rheos Medicines, Inc. and PsiOxus Therapeutics Ltd., both of which are private life science companies. He holds a
B.Sc.  in  Mathematics  from  King's  College  University  of  London  and  a  M.Sc.  in  Economics  from  London  Business  School.  We  believe  that  Mr.  Higgons  is
qualified to serve on our board of directors due to his leadership and management experience.

Robert  Iannone,  M.D.,  M.S.C.E.—Dr.  Iannone  has  served  as  the  Executive  Vice  President,  Research  and  Development  of  Jazz  Pharmaceuticals  plc,  a  public
biopharmaceutical company, since May 2019. Previously, he served as the Chief Medical Officer and Head of Research and Development at Immunomedics, Inc.,
a  public  biopharmaceutical  company,  from  April  2018  until  May  2019.  Dr.  Iannone  also  held  leadership  roles  at  AstraZeneca,  a  global  biopharmaceutical
company,  where,  from  July  2014  until  April  2018,  he  was  employed  in  the  roles  of  Senior  Vice  President  and  Head  of  Immuno-oncology,  Global  Medicines
Development. Since May 2021, Dr. Iannone has served as a member of the board of directors of iTeos Therapeutics, Inc. Dr. Iannone received a B.S. from The
Catholic University of America, an M.D. from the Yale School of Medicine and an M.S.C.E. from the University of Pennsylvania Perelman School of Medicine.
We believe Dr. Iannone is qualified to serve on our board of directors due to his background as a physician focused on oncology and his leadership experience in
the life sciences industry.

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Robert  Kamen,  Ph.D.—Dr.  Kamen  has  been  a  venture  partner  at  Third  Rock  Ventures,  LLC,  or  TRV,  since  December  2017,  and  he  previously  served  as  an
entrepreneur-in-residence  at  TRV  from  2010  through  2017.  Dr.  Kamen  serves  on  the  boards  of  directors  of  EpimAb  Biotherapeutics,  Inc.,  a  clinical-stage
biotechnology company specializing in bispecific antibody development, and Harbour BioMed, a global clinical-stage biopharmaceutical company. He served on
the board of directors of Neon Therapeutics, Inc., an immuno-oncology company, from 2015 through May 2020. Dr. Kamen holds a Ph.D. in biochemistry and
molecular  biology  from  Harvard  University  and  a  B.S.  in  biophysics  from  Amherst  College.  We  believe  that  Dr.  Kamen  is  qualified  to  serve  on  our  board  of
directors  because  of  his  experience  in  the  venture  capital  and  life  sciences  industries,  membership  on  various  other  boards  of  directors,  and  his  leadership  and
management experience.

Perry Karsen—Mr. Karsen has served as the chairman of our board of directors since April 2016. Mr. Karsen retired from Celgene Corporation at the end of 2015
and currently is a Senior Advisor at Samsara BioCapital as well as the Executive Chair of Autobahn Labs. He serves as the Chair of the Board of Directors of
Nitrase Therapeutics (formerly Nitrome Biosciences), and a member of the Boards of Directors for ESCAPE Bio, as Chair of the Board of Directors of Graphite
Bio and on the Board of the Gladstone Foundation. Previously, Mr. Karsen served as a director of Jiya Acquisition Corp., a public blank check special purpose
acquisition company affiliated with Samsara BioCapital, from November 2020 to September 2021, as well as on the boards of directors of Intellia Therapeutics,
Inc. from April 2016 to December 2020, Voyager Therapeutics, Inc. from July 2015 to August 2019, and OncoMed Pharmaceuticals, Inc. from January 2016 to
April 2019, each of which is a public life sciences company. Mr. Karsen received a Masters of Management from Northwestern University's Kellogg Graduate
School of Management, a Masters of Arts in Teaching of Biology from Duke University and a B.S. in Biological Sciences from the University of Illinois, Urbana-
Champaign. We believe Mr. Karsen is qualified to serve on our board of directors because of his executive leadership experience and membership on boards of
directors of other public companies.

Richard Murray, Ph.D.—Dr. Murray has served as our president, chief executive officer and a member of our board of directors since July 2014. Prior to joining
Jounce, Dr. Murray served as senior vice president of biologics and vaccines research and development at Merck & Co., a global healthcare company, from 2009
to June 2014 where he was responsible for the advancement of biologics and vaccines, including Merck's cancer immunotherapy pipeline. Since June 2019, he has
served as a director of Platelet Biogenesis, Inc., a private biotechnology company. Dr. Murray holds a Ph.D. in microbiology and immunology from the University
of North Carolina at Chapel Hill and a B.S. in microbiology from the University of Massachusetts, Amherst. We believe that Dr. Murray is qualified to serve on
our board of directors due to his operating and historical experience gained from serving as our president, chief executive officer and as a board member, combined
with his experience in drug research and development.

Jigar Raythatha—Mr. Raythatha joined TRV as a venture partner in January 2022 and previously served as the president and chief executive officer and a member
of the Board of Directors of Constellation Pharmaceuticals, Inc., a public pharmaceutical company, from March 2017 until its acquisition by MorphoSys AG in
July 2021. Mr. Raythatha previously served as chief business officer of Jounce from December 2012 until February 2017. He earned an M.B.A. from Columbia
University  and  a  B.A.  in  biochemistry  and  economics  from  Rutgers  University.  We  believe  that  Mr.  Raythatha  is  qualified  to  serve  on  our  board  of  directors
because of his leadership experience in the life sciences industry.

Luisa Salter-Cid, Ph.D.—Dr. Salter-Cid has served as the Chief Scientific Officer of Pioneering Medicines, a division of Flagship Pioneering, since May 2021.
Previously, Dr. Salter-Cid was the Chief Scientific Officer of Gossamer Bio, Inc., a public clinical-stage biopharmaceutical company, from August 2018 through
April 2021, and worked at Bristol Myers Squibb in increasing positions of responsibility from 2005 to August 2018, most recently as Vice President and Head of
Immunology,  small  molecule  Immuno-Oncology  and  Genomics  Discovery.  Dr.  Salter-Cid  holds  a  B.S.  in  Biology  from  University  of  Lisbon  and  a  Ph.D.  in
Immunology  from  the  University  of  Miami  School  of  Medicine.  We  believe  that  Dr.  Salter-Cid  is  qualified  to  serve  on  our  board  of  directors  because  of  her
leadership experience in the life sciences industry and experience in immuno-oncology.

Executive Officers

The following table sets forth our executive officers as of February 28, 2022.

(1)

Name
Richard Murray, Ph.D.
Kim C. Drapkin
Hugh M. Cole
Elizabeth G. Trehu, M.D.

Age
63
54
56
61

Position
President, Chief Executive Officer and Director
Chief Financial Officer and Treasurer
Chief Business Officer and Head of Corporate Development
Chief Medical Officer

    (1) Richard Murray, Ph.D. is also a member of the Board of Directors and his biographical information appears above.

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Kim C. Drapkin—Ms. Drapkin has served as our chief financial officer since August 2015, and our treasurer since February 2013. From 2009 to August 2015,
Ms. Drapkin was the owner of KCD Financial LLC, through which she served as our interim chief financial officer from 2012 to August 2015, and consulted for
numerous biotechnology companies. Ms. Drapkin began her career at PricewaterhouseCoopers LLP, is a certified public accountant and holds a B.S. in accounting
from Babson College.

Hugh M. Cole—Prior to joining Jounce in August 2017, Mr. Cole served as chief business officer for ARIAD Pharmaceuticals, Inc., an oncology company, from
March 2014 to June 2017, where he led numerous business development transactions. Previously, Mr. Cole served as senior vice president, strategic planning and
program management at Shire plc, a global biopharmaceutical company, from 2007 to March 2014. Mr. Cole earned his M.B.A. in health care management and
finance at the Wharton School of Business and his A.B. in chemistry from Harvard University.

Elizabeth G. Trehu, M.D.—Dr. Trehu joined Jounce as our chief medical officer in November 2015. Prior to joining Jounce, Dr. Trehu served as the chief medical
officer of Promedior, Inc., a biotechnology company, from 2012 to November 2015. Dr. Trehu holds an M.D. from the New York University School of Medicine
and an A.B. in English from Princeton University.

Code of Ethics

We have adopted a written code of business conduct and ethics that applies to our directors, officers, and employees, including our principal executive officer,
principal  financial  officer,  principal  accounting  officer  or  controller,  or  persons  performing  similar  functions.  A  copy  of  the  code  is  posted  on  the  Corporate
Governance section of our website, which is located at www.jouncetx.com. If we make any substantive amendments to, or grant any waivers from, the code of
business conduct and ethics for any officer or director, we will disclose the nature of such amendment or waiver on our website or in a current report on Form 8-K.
We will provide any person, without charge, a copy of such Code of Business Conduct and Ethics upon written request, which may be mailed to 780 Memorial
Drive, Cambridge, MA 02139, Attn: Corporate Secretary.

Additional  information  required  by  this  Item  10  will  be  included  in  the  sections  captioned  “Proposal  1  -  Election  of  Three  Class  I  Directors”  and  “Corporate
Governance” in our definitive Proxy Statement for our 2022 Annual Meeting of Stockholders, which information is incorporated herein by reference.

Item 11. Executive Compensation

The information required by this Item 11 will be included in the section captioned “Executive and Director Compensation” in our definitive Proxy Statement for
our 2022 Annual Meeting of Stockholders, which information is incorporated herein by reference.

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

The information required by this Item 12 will be included in the section captioned “Principal Stockholders” and “Equity Compensation Plan Information” in our
definitive Proxy Statement for our 2022 Annual Meeting of Stockholders, which information is incorporated herein by reference.

Item 13. Certain Relationships and Related Transactions and Director Independence

The  information  required  by  this  Item  13  will  be  included  in  the  sections  captioned  “Corporate  Governance”  and  “Transactions  with  Related  Persons”  in  our
definitive Proxy Statement for our 2022 Annual Meeting of Stockholders, which information is incorporated herein by reference.

Item 14. Principal Accountant Fees and Services

The information required by this Item 14 will be included in the section captioned “Ratification of the Selection of Independent Registered Public Accounting
Firm” in our definitive Proxy Statement for our 2022 Annual Meeting of Stockholders, which information is incorporated herein by reference.

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Item 15. Exhibits and Financial Statement Schedules

(1) Financial Statements

The following documents are attached hereto and are filed as part of this Annual Report on Form 10-K.    

PART IV

Report of Independent Registered Public Accounting Firm (PCAOB ID: 42)
Consolidated Balance Sheets
Consolidated Statements of Operations and Comprehensive Loss
Consolidated Statements of Stockholders’ Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements

(2) Financial Statement Schedules

F-1
F-2
F-3
F-4
F-5
F-6

Schedules have been omitted since they are either not required or not applicable or the information is otherwise included herein.

(3) Exhibits

The exhibits filed or furnished as part of this Annual Report on Form 10-K are listed in the Exhibit Index immediately preceding the signatures, which Exhibit
Index is incorporated herein by reference.

Item 16. Form 10-K Summary

None.

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Report of Independent Registered Public Accounting Firm

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

Opinion on the Financial Statements

We  have  audited  the  accompanying  consolidated  balance  sheets  of  Jounce  Therapeutics,  Inc.  (the  Company)  as  of  December  31,  2021  and  2020,  the  related
consolidated statements of operations and comprehensive loss, stockholders' equity and cash flows for each of the two years in the period ended December 31,
2021, 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, 2021 and 2020, and the results of its operations and its cash flows for each of the
two years in the period ended December 31, 2021, 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 (United States) (PCAOB) and are required
to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and
Exchange Commission and the PCAOB.

We  conducted  our  audits  in  accordance  with  the  standards  of  the  PCAOB.  Those  standards  require  that  we  plan  and  perform  the  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.

/s/ Ernst & Young LLP

We have served as the Company’s auditor since 2013.

Boston, Massachusetts
March 2, 2022

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Table of Contents

Jounce Therapeutics, Inc.
Consolidated Balance Sheets
(amounts in thousands, except par value amounts)

Assets:
Current assets:

Cash and cash equivalents
Short-term investments
Prepaid expenses and other current assets

Total current assets

Property and equipment, net
Long-term investments
Operating lease right-of-use asset
Other non-current assets               

Total assets               

Liabilities and stockholders’ equity:
Current liabilities:

Accounts payable
Accrued expenses
Deferred revenue, current—related party
Operating lease liability, current
Other current liabilities               

Total current liabilities

Operating lease liability, net of current portion

Total liabilities

Commitments and contingencies (Note 13)
Stockholders’ equity:

Preferred stock, $0.001 par value: 5,000 shares authorized at December 31, 2021 and 2020; no shares issued or outstanding
at December 31, 2021 and 2020
Common stock, $0.001 par value: 160,000 shares authorized at December 31, 2021 and 2020; 51,265 and 41,729 shares
issued at December 31, 2021 and 2020, respectively; 51,265 and 41,729 shares outstanding at December 31, 2021 and 2020,
respectively
Additional paid-in capital
Accumulated other comprehensive (loss) income
Accumulated deficit

Total stockholders’ equity

Total liabilities and stockholders’ equity

December 31,

2021

2020

95,529  $
83,037 
12,261 
190,827 
4,882 
41,657 
11,877 
3,453 
252,696  $

1,674  $
13,467 
— 
3,695 
62 
18,898 
9,993 
28,891 

147,493 
58,985 
4,913 
211,391 
7,336 
6,710 
14,856 
3,943 
244,236 

2,036 
12,044 
1,931 
3,271 
42 
19,324 
13,618 
32,942 

— 

— 

51 
465,865 
(238)
(241,873)
223,805 
252,696  $

42 
362,270 
(17)
(151,001)
211,294 
244,236 

$

$

$

$

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

F-2

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

Revenue:

License and collaboration revenue—related party

Operating expenses:

Research and development
General and administrative
Total operating expenses

Operating loss
Other income, net          
Loss before provision for income taxes
Provision for income taxes

Net loss

Net loss per share, basic and diluted
Weighted-average common shares outstanding, basic and diluted
Comprehensive loss:
Net loss
Other comprehensive loss:

Unrealized loss on available-for-sale securities               

Comprehensive loss

Year Ended December 31,

2021

2020

26,907 

$

88,979 
28,984 
117,963 
(91,056)
199 
(90,857)
15 
(90,872)

(1.82)
49,931 

(90,872)

(221)
(91,093)

$

$

$

$

1
(

(

(

(

(

$

$

$

$

$

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

F-3

 
 
Table of Contents

Jounce Therapeutics, Inc.
Consolidated Statements Stockholders’ Equity
(amounts in thousands)

Balance at December 31, 2019
Issuance of common stock from at the market
offering, net of issuance costs
Issuance of common stock under a stock
purchase agreement
Exercise of stock options
Vesting of restricted stock awards and
restricted stock units
Stock-based compensation expense
Other comprehensive loss
Net loss
Balance at December 31, 2020
Issuance of common stock from at the market
offering, net of issuance costs
Issuance of common stock from secondary
public offering, net of issuance costs
Exercise of stock options
Vesting of restricted stock awards and
restricted stock units
Stock-based compensation expense
Other comprehensive loss
Net loss

Balance at December 31, 2021

Common Stock

Shares

Amount

Additional Paid-In
Capital

Accumulated Other
Comprehensive (Loss)
Income

Accumulated
Deficit

Total
Stockholders’
Equity

33,738  $

34  $

281,664  $

54  $

(107,159) $

174,593 

2,074 

5,540 
128 

249 
— 
— 
— 
41,729 

3,156 

5,750 
403 

2 

6 
— 

— 
— 
— 
— 
42 

3 

6 
— 

14,511 

55,724 
600 

— 
9,771 
— 
— 
362,270 

30,218 

60,632 
1,268 

— 

— 

— 
— 
(71)
— 
(17)

— 

— 
— 

— 

— 

— 
— 
— 
(43,842)
(151,001)

— 

— 
— 

227 
— 
— 
— 
51,265  $

— 
— 
— 
— 
51  $

— 
11,477 
— 
— 
465,865  $

— 
— 
(221)
— 
(238) $

— 
— 
— 
(90,872)
(241,873) $

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

14,513 

55,730 
600 

— 
9,771 
(71)
(43,842)
211,294 

30,221 

60,638 
1,268 

— 
11,477 
(221)
(90,872)
223,805 

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Table of Contents

Jounce Therapeutics, Inc.
Consolidated Statements of Cash Flows
(amounts in thousands)

Operating activities:
Net loss
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense
Depreciation expense
Net amortization of premiums and discounts on investments
Changes in operating assets and liabilities:

Prepaid expenses and other current assets
Other non-current assets
Accounts payable
Accrued expenses and other current liabilities
Deferred revenue—related party
Other liabilities
Net cash used in operating activities

Investing activities:
Purchases of investments
Proceeds from maturities of investments
Purchases of property and equipment

Net cash (used in) provided by investing activities

Financing activities:
Proceeds from at the market offering, net of issuance costs
Proceeds from issuance of common under a stock purchase agreement, at fair value
Proceeds from exercise of stock options

Net cash provided by financing activities           

Net (decrease) increase in cash, cash equivalents and restricted cash
Cash, cash equivalents and restricted cash, beginning of period

Cash, cash equivalents and restricted cash, end of period

Non-cash investing and financing activities:
Stock option exercise receivables in prepaid expenses and other current assets
Issuance costs in accounts payable and accrued expenses
Discount on common stock issued under a stock purchase agreement
Supplemental cash flow information:
Cash paid for lease liabilities
Cash paid for income taxes

Year Ended December 31,

2021

2020

$

(90,872) $

(43,842)

11,477 
2,827 
921 

(7,331)
490 
(329)
1,443 
(1,931)
(189)
(83,494)

(130,272)
70,131 
(373)
(60,514)

90,826 
— 
1,218 
92,044 
(51,964)
148,763 
96,799  $

50  $
—  $
—  $

4,896  $
8  $

$

$
$
$

$
$

9,771 
3,401 
47 

(236)
(1,469)
(296)
3,047 
1,931 
(142)
(27,788)

(85,895)
137,287 
(94)
51,298 

14,412 
55,730 
600 
70,742 
94,252 
54,511 
148,763 

— 
33 
(20,730)

4,024 
45 

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

F-5

 
 
 
 
 
 
 
 
 
 
 
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1. Nature of Business

Jounce Therapeutics, Inc.
Notes to Consolidated Financial Statements

Jounce Therapeutics, Inc. (the “Company”) is a clinical-stage immunotherapy company dedicated to transforming the treatment of cancer by developing therapies
that enable the immune system to attack tumors and provide long-lasting benefits to patients. The Company is subject to a number of risks similar to those of other
clinical-stage companies, including dependence on key individuals; the need to develop commercially viable products; competition from other companies, many of
which are larger and better capitalized; and the need to obtain adequate additional financing to fund the development of its products.

As  of  December  31,  2021,  the  Company  had  cash,  cash  equivalents,  and  investments  of  $220.2  million.  The  Company  expects  that  its  existing  cash,  cash
equivalents and investments will enable it to fund its expected operating expenses and capital expenditure requirements for at least 12 months from March 2, 2022,
the filing date of this Annual Report on Form 10-K. The Company expects to finance its future cash needs through a combination of equity or debt financings,
collaborations, licensing arrangements and strategic alliances.

2. Basis of Presentation and Summary of Significant Accounting Policies

Basis of Presentation and Consolidation

The accompanying consolidated financial statements have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission
(the “SEC”) and generally accepted accounting principles in the United States of America (“GAAP”) as found in the Accounting Standards Codification (“ASC”)
of the Financial Accounting Standards Board (“FASB”). These consolidated financial statements include the accounts of Jounce Therapeutics, Inc. and its wholly-
owned subsidiary, Jounce Mass Securities, Inc. All intercompany transactions and balances have been eliminated in consolidation.

Segment Information

Operating  segments  are  defined  as  components  of  an  enterprise  about  which  separate  discrete  information  is  available  for  evaluation  by  the  chief  operating
decision-maker in deciding how to allocate resources and assess performance. The Company and the Company’s chief operating decision maker, the Company’s
chief executive officer, views the Company’s operations and manages its business as a single operating segment. The Company operates only in the United States.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the
financial  statements  and  accompanying  notes.  On  an  ongoing  basis,  the  Company’s  management  evaluates  its  estimates  which  include,  but  are  not  limited  to,
estimates related to revenue recognized under the Gilead License Agreement (including estimates of standalone selling prices of each performance obligation and
internal and external costs expected to be incurred to satisfy performance obligations), accrued expenses, stock-based compensation expense and income taxes.
The  Company  bases  its  estimates  on  historical  experience  and  other  market  specific  or  other  relevant  assumptions  it  believes  to  be  reasonable  under  the
circumstances. Actual results could differ from those estimates.

Fair Value of Financial Instruments

ASC  Topic  820,  Fair  Value  Measurement  (“ASC  820”)  establishes  a  fair  value  hierarchy  for  instruments  measured  at  fair  value  that  distinguishes  between
assumptions  based  on  market  data  (observable  inputs)  and  the  Company’s  own  assumptions  (unobservable  inputs).  Observable  inputs  are  inputs  that  market
participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs
that reflect the Company’s assumptions about the inputs that market participants would use in pricing the asset or liability and are developed based on the best
information available in the circumstances.

ASC 820 identifies fair value as the exchange price, or exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an
orderly  transaction  between  market  participants.  As  a  basis  for  considering  market  participant  assumptions  in  fair  value  measurements,  ASC  820  establishes  a
three-tier fair value hierarchy that distinguishes between the following:

•

•

Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities.

Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly.

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•

Level 3 inputs are unobservable inputs that reflect the Company’s own assumptions about the assumptions market participants would use in pricing the
asset  or  liability.  Financial  assets  and  liabilities  are  classified  in  their  entirety  based  on  the  lowest  level  of  input  that  is  significant  to  the  fair  value
measurement.

To the extent that the valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more
judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial
instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

Cash Equivalents

Cash equivalents are highly-liquid investments that are readily convertible into cash with original maturities of three months or less when purchased. These assets
include investment in money market funds that invests in U.S. Treasury obligations.

Investments

Short-term investments consist of investments with maturities greater than ninety days and less than one year from the balance sheet date. Long-term investments
consist  of  investments  with  maturities  of  greater  than  one  year  that  are  not  expected  to  be  used  to  fund  current  operations.  The  Company  classifies  all  of  its
investments  as  available-for-sale  securities.  Accordingly,  these  investments  are  recorded  at  fair  value.  Realized  gains  and  losses,  amortization  and  accretion  of
discounts and premiums are included in “Other income, net”. Unrealized gains and losses on available-for-sale securities are included in “Other comprehensive
income” as a component of stockholders’ equity until realized.

Property and Equipment

Property and equipment is recorded at cost and consists of laboratory equipment, furniture and office equipment, computer equipment, leasehold improvements.
The  Company  capitalizes  property  and  equipment  that  is  acquired  for  research  and  development  activities  and  that  has  alternate  future  use.  Expenditures  for
maintenance  and  repairs  are  recorded  to  expense  as  incurred,  whereas  major  betterments  are  capitalized  as  additions  to  property  and  equipment.  Leasehold
improvements are depreciated over the lesser of their useful life or the term of the lease. Depreciation is calculated over the estimated useful lives of the assets
using the straight-line method.

Impairment of Long-lived Assets

The  Company  reviews  its  property  and  equipment  whenever  events  or  changes  in  circumstances  indicate  that  the  carrying  value  of  certain  assets  might  not  be
recoverable and recognizes an impairment loss when it is probable that an asset’s realizable value is less than the carrying value.

Leases

The  Company  accounts  for  leases  in  accordance  with  ASC  Topic  842,  Leases.  At  the  inception  of  an  arrangement,  the  Company  determines  whether  the
arrangement is or contains a lease based on the unique facts and circumstances present in the arrangement. Leases with a term greater than one year are recognized
on the balance sheet as right-of-use assets and short-term and long-term lease liabilities, as applicable. The Company does not recognize leases with terms of one
year or less on the balance sheet. Options to renew a lease are not included in the Company’s initial lease term assessment unless there is reasonable certainty that
the Company will renew. The Company monitors its plans to renew its material leases on a quarterly basis.

Operating  lease  liabilities  and  their  corresponding  right-of-use  assets  are  initially  recorded  based  on  the  present  value  of  lease  payments  over  the  expected
remaining  lease  term.  Certain  adjustments  to  the  right-of-use  asset  may  be  required  for  items  such  as  incentives  received.  The  interest  rate  implicit  in  lease
contracts is typically not readily determinable. As a result, the Company utilizes its incremental borrowing rate (“IBR”), which reflects the fixed rate at which the
Company could borrow on a collateralized basis the amount of the lease payments in the same currency, for a similar term, and in a similar economic environment.

The Company subsequently measures its lease liability at the present value of remaining lease payments, discounted using the IBR for the lease. The right-of-use
asset is subsequently measured at the amount of the lease liability, adjusted for prepaid or accrued lease payments and the remaining balance of lease incentives
received. The Company recognizes operating lease expense on a straight-line basis over the lease term.

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Revenue Recognition

The  Company  recognizes  revenue  in  accordance  with  ASC  Topic  606,  Revenue  from  Contracts  with  Customers  (“ASC  606”).  Under  ASC  606,  an  entity
recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration that the entity expects to receive
in exchange for those goods or services. In applying ASC 606, the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii)
identify  the  promises  and  performance  obligations  in  the  contract;  (iii)  determine  the  transaction  price;  (iv)  allocate  the  transaction  price  to  the  performance
obligations in the contract; and (v) recognize revenue when (or as) the Company satisfies the performance obligations. The Company only applies the five-step
model to contracts when it is probable that it will collect the consideration to which it is entitled in exchange for the goods or services it transfers to the customer.
At  contract  inception,  once  the  contract  is  determined  to  be  within  the  scope  of  ASC  606,  the  Company  assesses  the  goods  or  services  promised  within  each
contract,  determines  those  that  are  performance  obligations  and  assesses  whether  each  promised  good  or  service  is  distinct.  The  Company  then  recognizes  as
revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. As part
of  the  assessment,  the  Company  must  develop  assumptions  that  require  judgment  to  determine  the  standalone  selling  price  for  each  performance  obligation
identified in the contract. The Company uses key assumptions to determine the standalone selling price, which may include reimbursement rates for personnel
costs, development timelines and probabilities of regulatory success. The Company does not assess whether a contract has a significant financing component if the
expectation at contract inception is that the period between payment by the customer and the transfer of promised goods or services to the customer will be one
year or less.

Arrangements that include upfront payments may require deferral of revenue recognition to a future period until obligations under these arrangements are fulfilled.
The  event-based  milestone  payments  represent  variable  consideration,  and  the  Company  uses  the  “most  likely  amount”  method  to  estimate  this  variable
consideration. Given the high degree of uncertainty around the occurrence of these events, the Company determined the milestone and other contingent amounts to
be fully constrained until the uncertainty associated with these payments is resolved. Revenue will be recognized from sales-based royalty payments when or as the
sales occur. The Company will re-evaluate the transaction price in each reporting period as uncertain events are resolved and other changes in circumstances occur.
See Note 3, “License and Collaboration Revenue”, for further information on the Company’s application of ASC 606.

Research and Development Expenses

Expenditures  relating  to  research  and  development  are  expensed  as  incurred.  Research  and  development  expenses  include  external  expenses  incurred  under
arrangements  with  third  parties,  academic  and  non-profit  institutions  and  consultants;  salaries  and  personnel-related  costs,  including  non-cash  stock-based
compensation expense; license fees to acquire in-process technology and other expenses, which include direct and allocated expenses for laboratory, facilities and
other  costs.  Non‑refundable  advance  payments  for  goods  and  services  that  will  be  used  in  future  research  and  development  activities  are  expensed  when  the
activity has been performed or when the goods have been received rather than when the payment is made.

As part of the process of preparing the consolidated financial statements, the Company is required to estimate its accrued research and development expenses as of
each  balance  sheet  date.  In  accruing  service  fees,  the  Company  estimates  the  time  period  over  which  services  will  be  performed  and  the  level  of  effort  to  be
expended in each period. This process involves reviewing open contracts and purchase orders, communicating with internal personnel to identify services that have
been performed on the Company’s behalf and estimating the level of service performed and the associated cost incurred for the service when the Company has not
yet been invoiced or otherwise notified of the actual cost. The Company periodically confirms the accuracy of its estimates with its service providers and makes
adjustments if necessary. The majority of the Company’s service providers invoice monthly in arrears for services performed or when contractual milestones are
met. The financial terms of agreements with these service providers are subject to negotiation, vary from contract-to-contract and may result in uneven payment
flows. In circumstances where amounts have been paid in excess of costs incurred, the Company records a prepaid expense.

Intellectual Property Expenses

The  Company  expenses  costs  associated  with  intellectual  property-related  matters  as  incurred  and  classifies  such  costs  as  general  and  administrative  expenses
within the consolidated statements of operations and comprehensive (loss) income.

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Stock-based Compensation

The Company accounts for stock-based payments in accordance with ASC Topic 718, Compensation—Stock Compensation. This guidance requires all stock-based
payments  to  employees,  including  grants  of  employee  stock  options  and  restricted  stock  units  (“RSUs”),  to  be  recognized  as  expense  in  the  consolidated
statements of operations and comprehensive loss based on their grant date fair values. For stock options granted to employees and to members of the Company’s
board of directors for their services on the board of directors, the Company estimates the grant date fair value of each stock option using the Black-Scholes option-
pricing model. For RSUs granted to employees, the Company estimates the grant date fair value of each award using intrinsic value, which is based on the value of
the underlying common stock less any purchase price. For stock-based payments subject to service-based vesting conditions, the Company recognizes stock-based
compensation expense equal to the grant date fair value of stock-based payment on a straight-line basis over the requisite service period. 

The  Black‑Scholes  option  pricing  model  requires  the  input  of  certain  subjective  assumptions,  including  (i)  the  calculation  of  expected  term  of  the  stock-based
payment, (ii) the risk‑free interest rate, (iii) the expected stock price volatility and (iv) the expected dividend yield. The Company uses the simplified method as
proscribed  by  SEC  Staff  Accounting  Bulletin  No.  107  to  calculate  the  expected  term  for  stock  options  granted  to  employees  as  the  Company  does  not  have
sufficient historical exercise data to provide a reasonable basis upon which to estimate the expected term. The Company determines the risk‑free interest rate based
on  a  treasury  instrument  whose  term  is  consistent  with  the  expected  term  of  the  stock  options.  Because  there  had  been  no  public  market  for  the  Company’s
common stock prior to the Company’s initial public offering (“IPO”), there is a lack of Company‑specific historical and implied volatility data. Accordingly, the
Company  bases  its  estimates  of  expected  volatility  based  on  a  combination  of  the  Company’s  own  historical  volatility  and  historical  volatility  of  a  group  of
publicly-traded  companies  with  similar  characteristics  to  itself,  including  stage  of  product  development  and  therapeutic  focus  within  the  life  sciences  industry.
Historical volatility is calculated over a period of time commensurate with the expected term of the stock-based payment. The Company uses an assumed dividend
yield of zero as the Company has never paid dividends on its common stock, nor does it expect to pay dividends on its common stock in the foreseeable future.
The Company accounts for forfeitures of all stock-based payments when such forfeitures occur.

Income Taxes

Income  taxes  are  recorded  in  accordance  with  ASC  Topic  740,  Income  Taxes,  which  provides  for  deferred  taxes  using  an  asset  and  liability  approach.  The
Company recognizes deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the consolidated financial
statements or tax returns. Deferred tax assets and liabilities are determined based on the difference between the financial statement and tax bases of assets and
liabilities  using  enacted  tax  rates  in  effect  for  the  year  in  which  the  differences  are  expected  to  reverse.  A  valuation  allowance  against  deferred  tax  assets  is
recorded if, based on the weight of the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized.

The Company accounts for uncertain tax positions using a more-likely-than-not threshold for recognizing and resolving uncertain tax positions. The evaluation of
uncertain tax positions is based on factors, including, but not limited to, changes in the law, the measurement of tax positions taken or expected to be taken in tax
returns, the effective settlement of matters subject to audit, new audit activity and changes in facts or circumstances related to a tax position.

Comprehensive Loss

Comprehensive loss is comprised of net loss and other comprehensive loss. Other comprehensive loss for all periods presented consists of unrealized losses and
gains on available-for-sale securities.

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Net Loss per Share

Basic  net  loss  per  share  is  calculated  based  upon  the  weighted-average  number  of  common  shares  outstanding  during  the  period,  excluding  outstanding  stock
options and RSUs that have been issued but are not yet vested. Diluted net loss per share is calculated based upon the weighted-average number of common shares
outstanding  during  the  period  plus  the  dilutive  impact  of  weighted-average  common  equivalent  shares  outstanding  during  the  period.  The  potentially  dilutive
shares of common stock resulting from the assumed exercise of outstanding stock options and the assumed vesting of RSUs are determined under the treasury
stock method.

Concentrations of Credit Risk and Off-Balance Sheet Risk

Financial  instruments  that  potentially  expose  the  Company  to  concentrations  of  credit  risk  primarily  consist  of  cash,  cash  equivalents  and  investments.  The
Company  maintains  its  cash  and  cash  equivalent  balances  with  high-quality  financial  institutions  and,  consequently,  the  Company  believes  that  such  funds  are
subject  to  minimal  credit  risk.  The  Company’s  cash  equivalents  and  investments  are  comprised  of  money  market  funds  that  are  invested  in  U.S.  Treasury
obligations,  corporate  debt  securities,  U.S.  Treasury  obligations  and  government  agency  securities.  Credit  risk  in  these  securities  is  reduced  as  a  result  of  the
Company’s investment policy to limit the amount invested in any single issuer and to only invest in securities of a high credit quality. 

The Company has no significant off-balance sheet risk such as foreign exchange contracts, option contracts or other foreign hedging arrangements.

Recent Accounting Pronouncements, Not Yet Adopted

In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This
standard  requires  that  credit  losses  be  reported  using  an  expected  losses  model  rather  than  the  incurred  losses  model  that  is  currently  used,  and  it  establishes
additional disclosure requirements related to credit risks. For available-for-sale debt securities with expected credit losses, this standard now requires allowances to
be recorded instead of reducing the amortized cost of the investment. This guidance was originally effective for annual reporting periods beginning after December
15, 2019, including interim periods within those annual reporting periods, and early adoption was permitted. In November 2019, the FASB subsequently issued
ASU 2019-10, Financial  Instruments—Credit  Losses  (Topic  326),  Derivatives  and  Hedging  (Topic  815),  and  Leases  (Topic  842):  Effective  Dates,  whereby  the
effective  date  of  this  standard  for  smaller  reporting  companies  was  deferred  to  annual  reporting  periods  beginning  after  December  15,  2022,  including  interim
periods within those annual reporting periods, and early adoption is still permitted. Accordingly, the Company will now adopt this standard effective January 1,
2023, and it is currently evaluating the potential impact that ASU 2016-13 may have on the consolidated financial statements.

3.     License and Collaboration Revenue

Gilead License Agreement

On August 31, 2020, the Company and Gilead entered into an exclusive license agreement (the “Gilead License Agreement”) to license the Company’s GS-1811,
formerly JTX-1811, program to Gilead. Concurrently with the license agreement, the Company and Gilead entered into a stock purchase agreement (the “Stock
Purchase Agreement”) and a registration rights agreement (the “Registration Rights Agreement”, and together with the Gilead License Agreement and the Stock
Purchase Agreement, the “Transaction Agreements”). The transactions with Gilead were subject to review under the Hart-Scott Rodino Antitrust Improvements
Act of 1976 and other customary closing conditions, and became effective on October 16, 2020, the closing date of the agreement. Pursuant to the Gilead License
Agreement,  the  Company  granted  to  Gilead  a  worldwide  and  exclusive  license  to  develop,  manufacture  and  commercialize  GS-1811  and  certain  derivatives
thereof  (the  “Licensed  Products”).  Gilead  paid  the  Company  a  one-time,  non-refundable  upfront  payment  of  $85.0  million  in  October  2020.  The  Company
continued  to  develop  GS-1811  during  the  initial  development  term,  which  included  conducting  activities  defined  within  the  agreement  to  advance  GS-1811
through the clearance of an investigational new drug application (“IND”), which occurred in June 2021, after which the program transitioned to Gilead.

Milestone and Royalties

The Company is entitled to receive payments from Gilead upon the achievement of specified clinical, regulatory and sales milestones, including potential clinical
development  and  regulatory  milestone  payments  up  to  an  aggregate  total  of  $510.0  million  and  potential  sales  milestone  payments  up  to  an  aggregate  total  of
$175.0 million.

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The Company is also eligible to receive tiered royalty payments based on a percentage of annual worldwide net sales ranging from the high-single digits to mid-
teens, based on future annual net sales of the Licensed Products, on a Licensed Product-by-Licensed Product and country-by-country basis.

In  June  2021,  the  Company  received  clearance  of  the  IND  for  GS-1811  from  the  U.S.  Food  and  Drug  Administration  (“FDA”)  and  achieved  a  $25.0  million
milestone under the Gilead License Agreement.

Termination

Gilead may terminate the Gilead License Agreement for convenience, in its sole discretion, in its entirety or on a Licensed Product-by-Licensed Product or region-
by-region  basis,  at  any  time  with  prior  written  notice  to  the  Company.  Unless  terminated  earlier  in  accordance  with  its  terms,  the  Gilead  License  Agreement
provides that it will expire (i) on an Licensed Product-by-Licensed Product and country-by-country basis on the date of the expiration of the royalty term with
respect to such Licensed Product in such country and (ii) in its entirety upon the expiration of all applicable royalty terms with respect to the Licensed Products in
all countries, following which the applicable licenses under the Gilead License Agreement will become fully paid-up, perpetual, irrevocable and royalty-free.

Accounting Analysis

Identification of the Contract(s)

The Company assessed the Gilead License Agreement and concluded that it represents a contract with a customer within the scope of ASC 606. In addition, the
Company determined that the Gilead License Agreement and Stock Purchase Agreement should be evaluated as a combined contract in accordance with ASC 606
given that the agreements were executed contemporaneously, negotiated as a package and have the same commercial objective to provide funding to further the
Company’s research and development activities.

Identification of Promises and Performance Obligations

The  Company  determined  that  the  Gilead  License  Agreement  contains  the  following  promises:  (i)  delivery  of  a  worldwide  and  exclusive  license  to  develop,
manufacture and commercialize GS-1811 (the “GS-1811 License”), (ii) provision of certain research transition activities, specifically outlined within the Gilead
License Agreement, related to the advancement of GS-1811 through the clearance of an IND application and transition of the GS-1811 program to Gilead (the
“Research and Transition Services”), (iii) appointment of an individual to act as an alliance manager and primary point of contact for Gilead, (iv) appointment of
individuals to participate on the Joint Steering Committee (“JSC”), and (v) optional assistance by Jounce after completion of Research and Transition Services
upon the request of Gilead.

The Company assessed the above promises and concluded that each of the GS-1811 License and Research and Transition Services is capable of being distinct and
distinct within the context of the Gilead License Agreement. Based upon this evaluation, the Company concluded that its promise to deliver the GS-1811 License
and promise to perform Research and Transition Services represent separate performance obligations in the Gilead License Agreement.

The Company determined that the appointment of an individual to act as an alliance manager and primary point of contact for Gilead, participation in alliance
management meetings and the appointment of individuals to participate on the JSC do not constitute the transfer of a good or service to Gilead and as such, do not
represent performance obligations under the contract.

Finally, the Company assessed Gilead’s ability to request optional assistance by Jounce after completion of Research and Transition Services and determined that it
was  both  quantitatively  and  qualitatively  immaterial  in  the  context  of  the  Gilead  License  Agreement.  Accordingly,  the  Company  did  not  assess  the  optional
assistance as a performance obligation.

Determination of Transaction Price

As noted above, the Company received a non-refundable upfront payment of $85.0 million upon the execution of the Gilead License Agreement. This upfront
payment represents an element of fixed consideration under the Gilead License Agreement.

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The Company also evaluated as possible variable consideration the milestones and royalties discussed above. With respect to clinical development and regulatory
milestones, based upon the high degree of uncertainty and risk associated with these potential payments, the Company concluded that all such amounts should be
fully constrained and are not included in the initial transaction price. As part of the evaluation of the constraint the Company considered certain factors, including
that receipt of such milestones is outside the control of the Company and the probability of success criteria is estimated. Each of these variable consideration items
was evaluated under the most-likely amount method. As for royalties and sales milestones, the Company determined that the royalties and milestones relate solely
to  the  GS-1811  License,  which  is  a  license  of  intellectual  property  (“IP”).  Accordingly,  the  Company  did  not  include  any  potential  royalty  or  sales  milestone
amounts in the initial transaction price, and the Company will not recognize revenue related to these royalties and sales milestones until the associated sales occur
and relevant thresholds are met. The Company will re-evaluate the transaction price in each reporting period as uncertain events are resolved or as other changes in
circumstances occur, and if necessary, will adjust its estimate of the transaction price to include milestones as they become probable of occurrence.

The Company assessed proceeds of $35.0 million received under the Stock Purchase Agreement and determined that the fair value of the equity component was
$55.7 million based on the closing price of $10.06 per share on October 16, 2020. Pursuant to the agreement, the Company sold 5,539,727 shares of common stock
for aggregate cash consideration of $35.0 million, or $6.32 per share, which is equal to the daily volume weighted average per share intraday price of the Common
Stock on Nasdaq over the 30-trading day period ending on and including August 28, 2020 plus a 30% premium. As a result, the Company determined that the
gross proceeds of $35.0 million received under the Stock Purchase Agreement included a discount to the fair value of the Company’s stock as of October 16, 2020
equal to $20.7 million. In accordance with ASC 606, the discount amount will be included in the transaction price for revenue recognition, resulting in an initial
transaction price of $64.3 million.

Allocation of Transaction Price to Performance Obligations

The Company allocated the transaction price to each performance obligation on a relative estimated standalone selling price basis. The Company developed the
estimated standalone selling price for the GS-1811 License based on the present value of expected future cash flows associated with the license and related clinical
development and regulatory milestones. In developing such estimate, the Company applied judgement in determining the timing needed to develop the Licensed
Product, the probability of success, and the discount rate. The Company developed the estimated standalone selling price for the Research and Transition Services
obligation based on the nature of the services to be performed and the Company’s best estimate of the length of time required to perform the services necessary to
achieve clearance of an IND application for the GS-1811 program.

Based on the above considerations, $60.8 million of the initial transaction price was allocated to the GS-1811 License performance obligation and $3.5 million was
allocated to the Research and Transition Services performance obligation.

Recognition of Revenue

The Company determined that the GS-1811 License is a functional license as the underlying IP has significant standalone functionality. In addition, the Company
determined that the GS-1811 License represents a right to use certain of the Company’s IP as it exists at a point in time. Finally, the Company determined that
October 16, 2020 represents (i) the date at which the Company made available the IP to Gilead and (ii) the beginning of the period during which Gilead is able to
use and benefit from its right to use the IP. Based upon these considerations, the Company recognized the entirety of the initial transaction price allocated to the
GS-1811 License performance obligation during the year ended December 31, 2020.

Further, the Company determined the input method under ASC 606 is the most appropriate method of revenue recognition for the Research and Transition Services
performance obligation. The method of measuring progress towards delivery of the services incorporated actual internal and external costs incurred, relative to
total  internal  and  external  costs  expected  to  be  incurred  to  satisfy  the  performance  obligation.  The  period  over  which  total  costs  were  estimated  reflected  the
Company’s best estimate of the period over which it would perform the research and transition services to achieve clearance of an IND application of the GS-1811
program and transition the program to Gilead.

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During  the  year  ended  December  31,  2021,  the  Company  recognized  $26.9  million  of  license  and  collaboration  revenue  under  the  Gilead  License  Agreement,
$25.0 million of which related to the achievement of a clinical development and regulatory milestone for FDA clearance of the IND for GS-1811 and $1.9 million
of which related to the completion of research and transition services. During the year ended December 31, 2020, the Company recognized $62.3 million of license
and collaboration revenue, $60.8 million of which related to the GS-1811 License performance obligation and $1.6 million related to the performance of research
and transition services.

The following table presents changes in the Company’s contract liabilities related to the Gilead License Agreement during the year ended December 31, 2021 (in
thousands):

Contract liabilities:
   Deferred revenue — related party

Total

January 1, 2021

Additions

Reductions

December 31, 2021

$
$

1,931  $
1,931  $

—  $
—  $

(1,931) $
(1,931) $

— 
— 

The reductions to deferred revenue - related party during the year ended December 31, 2021 were comprised of revenue recognized for research and transition
services performed during the period.

4.    Fair Value Measurements

The Company measures the fair value of money market funds, U.S. Treasuries and government agency securities based on quoted prices in active markets for
identical securities. Investments also include corporate debt securities which are valued either based on recent trades of securities in inactive markets or based on
quoted market prices of similar instruments and other significant inputs derived from or corroborated by observable market data.

The  carrying  amounts  reflected  in  the  consolidated  balance  sheets  for  cash,  prepaid  expenses  and  other  current  assets,  accounts  payable  and  accrued  expenses
approximate their fair values, due to their short-term nature.

Assets measured at fair value on a recurring basis as of December 31, 2021 were as follows (in thousands):

Money market funds, included in cash equivalents
Investments:

Corporate debt securities
U.S. Treasuries
Government agency securities

Totals

Total

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

Significant Other
Observable Inputs
(Level 2)

Significant
Unobservable Inputs
(Level 3)

$

$

95,529  $

95,529  $

—  $

86,470 
30,271 
7,953 
220,223  $

— 
30,271 
— 
125,800  $

86,470 
— 
7,953 
94,423  $

— 

— 
— 
— 
— 

Assets measured at fair value on a recurring basis as of December 31, 2020 were as follows (in thousands):

Money market funds, included in cash equivalents
Investments:

Corporate debt securities
Government agency securities

Totals

Total

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

Significant Other
Observable Inputs
(Level 2)

Significant
Unobservable Inputs
(Level 3)

$

$

147,492  $

147,492  $

—  $

63,691 
2,005 
213,188  $

— 
— 
147,492  $

63,691 
2,005 
65,696  $

— 

— 
— 
— 

There were no changes in valuation techniques during the years ended December 31, 2021 or 2020. There were no liabilities measured at fair value on a recurring
basis as of December 31, 2021 or 2020.

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5.     Investments

Short-term investments consist of investments with maturities greater than ninety days and less than one year from the balance sheet date. Long-term investments
consist  of  investments  with  maturities  of  greater  than  one  year  that  are  not  expected  to  be  used  to  fund  current  operations.  The  Company  classifies  all  of  its
investments  as  available-for-sale  securities.  Accordingly,  these  investments  are  recorded  at  fair  value.  Realized  gains  and  losses,  amortization  and  accretion  of
discounts and premiums are included in other income, net. Unrealized gains and losses on available-for-sale securities are included in other comprehensive income
as a component of stockholders’ equity until realized.

Cash equivalents, short-term investments and long-term investments as of December 31, 2021 were comprised as follows (in thousands):

Cash equivalents and short-term investments:

Money market funds, included in cash equivalents
Corporate debt securities
U.S. Treasuries
Total cash equivalents and short-term investments

Long-term investments:

Corporate debt securities
U.S. Treasuries
Government agency securities
Total long-term investments

Total cash equivalents and investments

Amortized Cost

Unrealized Gains

Unrealized Losses

Fair Value

December 31, 2021

$

$

95,529  $
69,316 
13,777 
178,622 

17,276 
16,580 
7,983 
41,839 
220,461  $

—  $
— 
— 
— 

— 
— 
— 
— 
—  $

—  $
(34)
(22)
(56)

(88)
(64)
(30)
(182)
(238) $

95,529 
69,282 
13,755 
178,566 

17,188 
16,516 
7,953 
41,657 
220,223 

Cash equivalents, short-term investments and long-term investments as of December 31, 2020 were comprised as follows (in thousands):

Cash equivalents and short-term investments:

Money market funds, included in cash equivalents
Corporate debt securities
Government agency securities
Total cash equivalents and short-term investments

Long-term investments:

Corporate debt securities
Total long-term investments

Total cash equivalents and investments

Amortized Cost

Unrealized Gains

Unrealized Losses

Fair Value

December 31, 2020

$

$

147,492  $
56,985 
2,001 
206,478 

6,727 
6,727 
213,205  $

—  $
9 
4 
13 

— 
— 
13  $

—  $
(13)
— 
(13)

(17)
(17)
(30) $

147,492 
56,981 
2,005 
206,478 

6,710 
6,710 
213,188 

As of December 31, 2021 and 2020, the aggregate fair value of securities that were in an unrealized loss position for less than twelve months was $86.7 million
and  $28.3  million,  respectively.  As  of  December  31,  2021,  the  aggregate  fair  value  of  securities  that  were  in  an  unrealized  loss  position  for  more  than  twelve
months  was  $4.8  million.  There  were  no  securities  that  were  in  an  unrealized  loss  position  for  more  than  twelve  months  as  of  December  31,  2020.  As  of
December 31, 2021, the Company did not intend to sell, and would not be more likely than not required to sell, the securities in an unrealized loss position before
recovery of their amortized cost bases. Furthermore, the Company determined that there was no material change in the credit risk of these securities. As a result,
the Company determined it did not hold any securities with any other-than-temporary impairment as of December 31, 2021.

There were no realized gains and losses on available-for-sale securities during the year ended December 31, 2021 and 2020.

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6.     Restricted Cash

As of both December 31, 2021 and 2020, the Company maintained non-current restricted cash of $1.3 million. This amount is included within “Other non-current
assets” in the accompanying consolidated balance sheets and is comprised solely of a security deposit required pursuant to the lease for the Company’s corporate
headquarters.

The  following  table  provides  a  reconciliation  of  cash,  cash  equivalents  and  restricted  cash  that  sums  to  the  total  of  the  same  such  amounts  shown  in  the
consolidated statements of cash flows (in thousands):

Cash and cash equivalents
Restricted cash

Cash, cash equivalents and restricted cash

$

$

147,493  $
1,270 
148,763  $

95,529  $
1,270 
96,799  $

53,241  $
1,270 
54,511  $

147,493 
1,270 
148,763 

Year Ended
December 31, 2021

Year Ended
December 31, 2020

Beginning of Period

End of Period

Beginning of Period

End of Period

7.     Property and Equipment, Net

Property and equipment, net as of December 31, 2021 and 2020 was comprised as follows (in thousands):

Laboratory equipment
Furniture and office equipment
Computer equipment

Leasehold improvements

Total property and equipment, gross

Less: accumulated depreciation

Total property and equipment, net

Estimated Useful Life (in
Years)
5
4
3
Shorter of useful life or
remaining lease term

December 31,

2021

2020

$

$

11,616  $
1,086 
1,641 

8,609 
22,952 
(18,070)

4,882  $

11,408 
1,071 
1,528 

8,572 
22,579 
(15,243)
7,336 

Depreciation expense for the years ended December 31, 2021 and 2020 was $2.8 million and $3.4 million, respectively.

8.     Accrued Expenses

Accrued expenses as of December 31, 2021 and 2020 were comprised as follows (in thousands):

Employee compensation and benefits
External research and professional services
Lab consumables and other

Total accrued expenses

9.   Common Stock and Preferred Stock

Common Stock

December 31,

2021

2020

$

$

6,844  $
6,252 
371 
13,467  $

6,825 
4,855 
364 
12,044 

The Company is authorized to issue 160,000,000 shares of common stock. Holders of common stock are entitled to one vote per share. Holders of common stock
are entitled to receive dividends, if and when declared by the Board of Directors.

On December 17, 2019, the Company entered into a Sales Agreement with Cowen and Company, LLC (“Cowen”) pursuant to which the Company could offer and
sell shares of its common stock with an aggregate offering price of up to $50.0 million under an “at the market” offering program (the “2019 ATM Offering”).
The Sales Agreement provided that Cowen will be entitled to a sales commission equal to 3.0% of the gross sales price per share of all shares sold under the ATM
Offering. During the first quarter of 2021, the Company sold an aggregate of 3,156,200 shares at an average price of $9.87 per share for net proceeds of $30.2
million, which completed the sale of all available amounts under the 2019 ATM Offering.

F-15

 
 
 
 
 
 
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In addition, during the first quarter of 2021, the Company completed a follow-on public offering of its common stock, selling an aggregate of 5,750,000 shares of
common  stock  at  a  public  offering  price  of  $11.25  per  share  for  net  proceeds  of  $60.6  million,  after  deducting  underwriting  discounts  and  commissions  and
offering fees.

On November 4, 2021, the Company entered into a new Sales Agreement with Cowen (the “2021 Sales Agreement”), pursuant to which the Company may offer
and sell shares of our common stock with an aggregate offering price of up to $75.0 million under an ATM offering program (the “2021 ATM Offering”). The
2021 Sales Agreement provides that Cowen will be entitled to a sales commission equal to 3.0% of the gross sales price per share of all shares sold under the 2021
ATM Offering. No sales were made under the 2021 ATM Offering during the year ended December 31, 2021.

Preferred Stock

The Company is authorized to issue 5,000,000 shares of undesignated preferred stock in one or more series. As of December 31, 2021, no shares of preferred stock
were issued or outstanding.

Shares Reserved for Future Issuance

As of December 31, 2021 and 2020, the Company had reserved for future issuance the following number of shares of common stock (in thousands):

Shares reserved for vesting of restricted stock units
Shares reserved for exercises of outstanding stock options
Shares reserved for future issuances under the 2017 Stock Option and Incentive Plan

Total shares reserved for future issuance

10.   Stock-based Compensation

2013 Stock Option and Grant Plan

December 31,

2021

2020

833 
7,629 
1,258 
9,720 

588 
6,586 
1,284 
8,458 

In February 2013, the board of directors adopted and the Company’s stockholders approved the 2013 Stock Option and Grant Plan (the “2013 Plan”), as amended
and restated, under which it could grant incentive stock options (“ISOs”), non-qualified stock options, restricted stock awards (“RSAs”) and restricted stock units
(“RSUs”) to eligible employees, officers, directors, and consultants. The 2013 Plan was subsequently amended in January 2015, April 2015, July 2015, March
2016 and October 2016 to allow for the issuance of additional shares of common stock.

2017 Stock Option and Incentive Plan

In January 2017, the board of directors adopted and the Company’s stockholders approved the 2017 Stock Option and Incentive Plan (the “2017 Plan”), which
became effective immediately prior to the effectiveness of the Company’s IPO. Upon the adoption of the 2017 Plan, no further awards will be granted under the
2013 Plan.

The 2017 Plan provides for the grant of ISOs, non-qualified stock options, RSAs, RSUs, stock appreciation rights and other stock-based awards. The Company’s
employees,  officers,  directors  and  consultants  and  advisors  are  eligible  to  receive  awards  under  the  2017  Plan.  The  terms  of  awards,  including  vesting
requirements, are determined by the Board of Directors, subject to the provisions of the 2017 Plan.

The Company initially registered 1,753,758 shares of common stock under the 2017 Plan, which was comprised of (i) 1,510,000 shares of common stock reserved
for issuance under the 2017 Plan, plus (ii) 243,758 shares of common stock originally reserved for issuance under the 2013 Plan that became available for issuance
under the 2017 Plan upon the completion of the Company’s IPO. The 2017 Plan also provides that an additional number of shares will automatically be added to
the shares authorized for issuance under the 2017 Plan on January 1, 2018 and each January 1  thereafter. The number of shares added each year will be equal to
the lesser of (i) 4% of the outstanding shares on the immediately preceding December 31  or (ii) such amount as determined by the compensation committee of the
board of directors. Effective January 1, 2020 and 2021, 1,349,526 and 1,669,162 additional shares, respectively, were automatically added to the shares authorized
for issuance under the 2017 Plan.

st

st

As of December 31, 2021, there were 1,258,296 shares available for future issuance under the 2017 Plan.

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Table of Contents

Inducement Stock Options

The Company may grant, upon approval by the compensation committee of the board of directors, awards, including options to purchase shares of common stock,
as an inducement to employment in accordance with Nasdaq Listing Rule 5635(c)(4). The securities are issued pursuant to Section 4(a)(2) under the Securities Act
of 1933, as amended, relating to transactions by an issuer not involving any public offering. These options are subject to substantially the same terms as options
issued  pursuant  to  the  2017  Plan.  During  the  second  quarter  of  2021,  the  Company  granted  an  option  to  purchase  225,000  shares  of  common  stock  as  an
inducement award.

2017 Employee Stock Purchase Plan

In January 2017, the board of directors adopted and the Company’s stockholders approved the 2017 Employee Stock Purchase Plan (the “2017 ESPP”), which
became effective upon the closing of the Company’s IPO. The Company initially reserved 302,000 shares of common stock for future issuance under the 2017
ESPP. The 2017 ESPP also provides that an additional number of shares will automatically be added to the shares authorized for issuance under the 2017 ESPP on
January  1,  2018  and  each  January  1   thereafter  through  January  1,  2027.  The  number  of  shares  added  each  year  will  be  equal  to  the  lesser  of  (i)  1%  of  the
outstanding shares on the immediately preceding December 31 , (ii) 603,000 shares or (iii) such amount as determined by the Compensation Committee of the
Board of Directors. Effective January 1, 2020 and 2021, 337,381 and 417,290 additional shares, respectively, were automatically added to the shares authorized for
issuance under the 2017 ESPP. No offering periods under the 2017 ESPP had been initiated as of December 31, 2021.

st  

st

Stock-based Compensation Expense

Total stock-based compensation expense recognized in the consolidated statements of operations and comprehensive (loss) income for the years ended December
31, 2021 and 2020 was as follows (in thousands):

Research and development
General and administrative

Total stock-based compensation expense

RSU Activity

Year Ended December 31,

2021

2020

$

$

5,560  $
5,917 
11,477  $

4,242 
5,529 
9,771 

The Company has also granted RSUs to its employees under the 2017 Plan. The following table summarizes RSU activity for the year ended December 31, 2021
(in thousands, except per share amounts):

Unvested as of December 31, 2020

Issued
Vested
Cancelled

Unvested as of December 31, 2021

RSUs

Weighted-Average Grant
Date Fair Value per Share
5.82 
11.17 
5.62 
9.15 

9.13 

588  $
562  $
(227) $
(90) $
833  $

The aggregate fair value of RSUs vested during the year ended December 31, 2021, based upon the fair values of the stock underlying the RSUs on the day of
vesting, was $1.5 million. The aggregate fair value of RSUs vested during the year ended December 31, 2020, based upon the fair values of the stock underlying
the RSUs on the day of vesting, was $1.5 million.

As of December 31, 2021, there was unrecognized stock-based compensation expense related to unvested RSUs of $4.7 million, which the Company expects to
recognize over a weighted-average period of approximately 1.5 years.

F-17

 
 
 
Table of Contents

Stock Option Activity

The fair value of stock options granted to employees and directors during the years ended December 31, 2021 and 2020 was calculated on the date of grant using
the following weighted-average assumptions:

Risk-free interest rate
Expected dividend yield
Expected term (in years)
Expected volatility

Year Ended December 31,

2021

2020

0.8 %
— %
6.0
81.9 %

1.2 %
— %
6.0
72.3 %

Using the Black-Scholes option pricing model, the weighted-average grant date fair value of stock options granted to employees and directors during the years
ended December 31, 2021 and 2020 was $7.05 and $4.25 per share, respectively.

The following table summarizes changes in stock option activity during the year ended December 31, 2021 (in thousands, except per share amounts):

Outstanding at December 31, 2020

Granted
Exercised
Cancelled

Outstanding at December 31, 2021

Exercisable at December 31, 2021

Options

Weighted-Average
Exercise Price

6,586  $
1,867  $
(403) $
(421) $
7,629  $
5,165  $

8.30 
10.19 
3.15 
11.35 

8.87 

8.91 

Weighted-Average
Remaining Contractual
Term (in years)

Aggregate Intrinsic
Value

6.5 $

13,110 

6.4 $

5.3 $

16,881 

13,944 

The aggregate intrinsic value of stock options exercised during the years ended December 31, 2021 and 2020 was $3.0 million and $0.5 million, respectively.

As  of  December  31,  2021,  there  was  unrecognized  stock-based  compensation  expense  related  to  unvested  stock  options  of  $12.5  million,  which  the  Company
expects to recognize over a weighted-average period of approximately 2.5 years.

11.   Income Taxes

The provision for income taxes for the years ended December 31, 2021 and 2020 was comprised as follows (in thousands):

Current taxes:

Federal
State

Total current taxes

Deferred taxes:

Federal
State

Total deferred taxes

Total provision for income taxes

Year Ended December 31,

2021

2020

$

$

—  $
15 
15 

— 
— 
— 
15  $

— 
14 
14 

— 
— 
— 
14 

F-18

 
 
 
 
 
 
 
 
 
 
 
Table of Contents

A reconciliation of the federal statutory income tax rate to the Company’s effective tax rate is as follows:

Income tax computed at federal statutory tax rate
State taxes, net of federal benefit
Tax credit carryforwards
Permanent items
Change in valuation allowance
Other

Effective tax rate

Year Ended December 31,

2021

2020

21.0 %
6.9 %
3.5 %
(0.7)%
(30.7)%
— %
— %

21.0 %
4.2 %
7.8 %
(12.4)%
(20.4)%
(0.2)%
— %

The principal components of the Company’s deferred tax assets and liabilities as of December 31, 2021 and 2020 were comprised as follows (in thousands):

Deferred tax assets:

Net operating loss carryforwards
Tax credit carryforwards
Deferred revenue
Operating lease liability
Intangibles
Accrued expenses and other
Unrealized loss on available-for-sale securities
Depreciation
Stock-based compensation
Total deferred tax assets

Less: valuation allowance
Net deferred tax assets

Deferred tax liabilities:

Operating lease right-of-use asset

Total deferred tax liabilities

Net deferred taxes

December 31,

2021

2020

$

$

45,590  $
25,327 
— 
3,739 
960 
1,843 
17 
583 
5,207 
83,266 
(80,022)
3,244 

(3,244)
(3,244)

—  $

22,717 
21,387 
528 
4,614 
785 
1,838 
17 
314 
4,031 
56,231 
(52,172)
4,059 

(4,059)
(4,059)
— 

As  of  December  31,  2021,  the  Company  had  federal  and  state  net  operating  loss  (“NOL”)  carryforwards  of  $166.1  million  and  $169.3  million,  respectively.
Federal  NOLs  generated  through  the  year  ended  December  31,  2017  expire  at  various  dates  from  2032  through  2037,  and  federal  NOLs  generated  in  years
beginning after December 31, 2017 may be carried forward indefinitely. State NOLs expire at various dates from 2035 through 2038. As of December 31, 2021,
the Company had federal research and development tax credit carryforwards of $19.2 million which expire at various dates from 2032 through 2041. In addition,
as of December 31, 2021, the Company had state research and development and investment tax credit carryforwards of $7.6 million and $0.1 million, respectively.
The state research and development tax credit carryforwards expire at various dates from 2029 through 2036 and the state investment tax credit carryforwards
expire at various dates from 2022 through 2024.

Management  has  evaluated  the  positive  and  negative  evidence  bearing  upon  the  realizability  of  its  deferred  tax  assets,  which  primarily  pertain  to  NOL
carryforwards, tax credit carryforwards, the Company’s operating lease liability and stock-based compensation. Management has determined that it is more likely
than not that the Company will not realize the benefits of its deferred tax assets, and as a result, a valuation allowance of $80.0 million has been established at
December 31, 2021. The increase in the valuation allowance of $27.8 million during the year ended December 31, 2021 was primarily due to increased net loss
during  the  year  ended  December  31,  2021  driven  by  increased  operating  expenses  and  reduced  revenue  recognition  under  the  Gilead  License  Agreement  as
compared to the year ended December 31, 2020.

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NOL and tax credit carryforwards are subject to review and possible adjustment by the Internal Revenue Service (“IRS”) and may become subject to an annual
limitation in the event of certain cumulative changes in the ownership interest of significant shareholders over a three-year period in excess of 50% as defined
under Sections 382 and 383 in the IRC. This could limit the amount of tax attributes that can be utilized annually to offset future taxable income or tax liabilities.
The  amount  of  the  annual  limitation  is  determined  based  on  the  Company’s  value  immediately  prior  to  the  ownership  change.  An  IRC  Section  382  study,
completed in August 2016, identified three previous ownership changes for purposes of IRC Section 382. As a result of these ownership changes, the Company’s
NOL and tax credit carryforwards allocable to the periods preceding each such ownership change are subject to limitations under IRC Section 382. No additional
ownership changes were identified in a study completed in November 2021. Subsequent ownership changes may further affect the limitation in future years.

The Company had no unrecognized tax benefits as of either December 31, 2021 or 2020. During the year ended December 31, 2017, the Company completed a
study of its research and development credit carryforwards generated during the years ended December 31, 2016 and 2015. The Company has not conducted a
study  of  its  research  and  development  credit  carryforwards  generated  during  any  subsequent  years.  This  study  may  result  in  an  adjustment  to  the  Company’s
research and development credit carryforwards; however, until a study is completed and any adjustment is known, no amounts are being presented as an uncertain
tax position. A full valuation allowance has been provided against the Company’s research and development credit carryforwards, and if an adjustment is required,
this adjustment would be offset by an adjustment to the valuation allowance. Thus, there would be no impact to the consolidated statements of operations and
comprehensive loss if an adjustment were required.

Interest and penalty charges, if any, related to income taxes would be classified as a component of the provision for income taxes in the consolidated statements of
operations and comprehensive loss. As of December 31, 2021, the Company has not incurred any material interest or penalty charges.

The Company files income tax returns in the United States federal tax jurisdiction and the Massachusetts state tax jurisdiction. Since the Company is in a loss
carryforward position, it is generally subject to examination by federal and state tax authorities for all tax years in which a loss carryforward is available.

12.   Related-party Transactions

In  August  2020,  the  Company  entered  into  the  Gilead  License  Agreement  and  Stock  Purchase  Agreement  under  which  it  received  a  non-refundable  upfront
payment of $85.0 million and cash consideration of $35.0 million for Gilead’s purchase of 5,539,727 shares of the Company’s common stock. During the year
ended  December  31,  2021,  the  Company  recognized  $26.9  million  in  revenue  under  the  Gilead  License  Agreement  and  recorded  less  than  $0.1  million  of
reimbursement  expenses  due  from  Gilead  within  prepaid  expenses  and  other  current  assets  in  the  accompanying  consolidated  balance  sheets.  During  the  year
ended  December  31,  2020,  the  Company  recognized  $62.3  million  in  revenue  under  these  arrangements  and  recorded  deferred  revenue  of  $1.9  million  in  the
accompanying consolidated balance sheets. As of December 31, 2020, the Company had recorded $0.1 million of reimbursement expenses due from Gilead within
prepaid expenses and other current assets in the accompanying consolidated balance sheets.

13.   Commitments and Contingencies

Corporate Headquarters Lease

In November 2016, the Company entered into an operating lease agreement (the “Corporate Headquarters Lease”) to occupy 51,000 square feet of laboratory and
office space in Cambridge, Massachusetts. This facility serves as the Company’s corporate headquarters. The lease term began on November 1, 2016 and extends
to March 31, 2025. The Company has the option to extend the lease term for one consecutive five-year period, at the market rate, by giving the landlord written
notice of its election to exercise the extension at least twelve months prior to the original expiration of the lease term. The Company provided the landlord with a
security deposit in the form of a letter of credit in the amount of $1.3 million, which is recorded as restricted cash and included within “Other non-current assets”
in the consolidated balance sheets. The Corporate Headquarters Lease also provided the Company with a tenant improvement allowance of $0.5 million. Leasehold
improvements related to this facility are being amortized over the shorter of their useful life or the lease term.

F-20

Table of Contents

Accounting under ASC 842

As a result of the adoption of ASC 842 on January 1, 2019, the Company recorded a right-of-use asset and a corresponding lease liability on the consolidated
balance  sheets  as  of  December  31,  2021  and  2020.  As  there  is  no  rate  implicit  in  the  Corporate  Headquarters  Lease,  the  Company  estimated  its  incremental
borrowing rate based upon a synthetic credit rating and yield curve analysis. Based upon this analysis, the Company calculated a discount rate of 8.0% for the
Corporate Headquarters Lease.

As  of  December  31,  2021,  the  future  minimum  lease  payments  due  under  the  operating  lease  for  the  Company’s  corporate  headquarters  are  as  follows  (in
thousands):

2022
2023
2024
2025

Total remaining minimum rental payments

Less: effect of discounting

Total lease liability

$

$

Amount

4,657 
4,789 
4,925 
1,249 
15,620 
(1,932)
13,688 

The Company recorded operating lease expense for the Corporate Headquarters Lease of $4.3 million for the year ended December 31, 2021 and $4.2 million for
the  year  ended  December  31,  2020.  As  of  December  31,  2021,  the  remaining  lease  term  of  the  Corporate  Headquarters  Lease  was  3.3  years.  The  Company
presents changes in its right-of-use asset and lease liability on a combined net basis within “Other liabilities” in the consolidated statements of cash flows.

License and Collaboration Agreements

The  Company  has  entered  into  various  license  agreements  for  certain  technology.  The  Company  could  be  required  to  make  aggregate  technical,  clinical
development  and  regulatory  milestone  payments  of  up  to  $7.9  million  and  low  single-digit  royalty  payments  based  on  a  percentage  of  net  sales  of  licensed
products. As of December 31, 2021, the Company had made $1.0 million in aggregate milestone payments under these license agreements. The Company may
cancel these agreements at any time by providing 30 to 90 days’ notice to the licensors, and all payments not previously due would no longer be owed.

The Company has also entered into collaboration agreements with various third parties for research services and access to proprietary technology platforms. Under
these collaboration agreements, the Company could be required to make aggregate technical, clinical development and regulatory milestones payments ranging
from $12.5 million to $12.9 million per product candidate and low single-digit royalty payments based on a percentage of net sales on a product-by-product basis.
As of December 31, 2021, the Company had made $1.8 million in aggregate milestone payments under these collaboration agreements.

14.   401(k) Savings Plan

The  Company  has  a  defined-contribution  savings  plan  under  Section  401(k)  of  the  IRC  (the  “401(k)  Plan”).  The  401(k)  Plan  covers  all  employees  who  meet
defined minimum age and service requirements and allows participants to defer a portion of their annual compensation on a pretax basis. Beginning on January 1,
2018, the Company matches 50% of an employee’s 401(k) contributions up to a maximum of 6% of the participant’s salary, subject to employer match limitations
under the IRC. As such, the Company made $0.7 million and $0.6 million in contributions to the 401(k) Plan for the years ended December 31, 2021 and 2020,
respectively.

F-21

Table of Contents

15.   Net Loss per Share

The  following  weighted-average  amounts  were  excluded  from  the  calculation  of  diluted  net  loss  per  share  because  their  effect  would  be  anti-dilutive  (in
thousands):

Outstanding stock options
Unvested RSUs

Total

Year Ended December 31,

2021

2020

7,388 
791 
8,179 

6,594 
660 
7,254 

F-22

Table of Contents

Exhibit No.
3.1

3.2

4.1

4.2
10.1#

10.2#

10.3#

10.4#

10.5#

10.6*#
10.7#

10.8#

10.9#

10.10#

10.11#

10.12#

10.13#

10.14

10.15†

10.16‡

10.17‡

10.18‡

10.19

21.1*
23.1*
31.1*

31.2*

32.1+

101*

*

+
#

†
‡

EXHIBIT INDEX

Description of Exhibit
Fourth Amended and Restated Certificate of Incorporation of the Registrant (incorporated by reference to Exhibit 3.1 of the Registrant’s Annual Report on Form 10-K (File No.
001-37998) filed March 8, 2018)
Amended and Restated Bylaws of the Registrant (incorporated by reference to Exhibit 3.2 of the Registrant’s Annual Report on Form 10-K (File No. 001-37998) filed March 8,
2018)
Specimen Common Stock Certificate (incorporated by reference to Exhibit 4.1 of the Registrant’s Registration Statement on Form S-1 (File No. 333-215372) filed December 30,
2016)
Description of Securities (incorporated by reference to Exhibit 4.3 of the Registrant’s Annual Report on Form 10-K (File No. 001-37998) filed February 27, 2020)
Jounce Therapeutics, Inc. 2017 Stock Option and Grant Plan and forms of award agreements thereunder (incorporated by reference to Exhibit 10.1 of the Registrant’s Registration
Statement on Form S-1/A (File No. 333-215372) filed January 17, 2017)
Form of Restricted Stock Unit Award Agreement under 2017 Stock Option and Incentive Plan (for employees) (incorporated by reference to Exhibit 10.1 of the Registrant’s
Quarterly Report on Form 10-Q (File No. 001-37998) filed August 9, 2018)
Form of Non-Qualified Stock Option Agreement Inducement Grant for Employees (incorporated by reference to Exhibit 10.1 of the Registrant’s Quarterly Report on Form 10-Q
(File No. 001-37998) filed August 5, 2021)
Jounce Therapeutics, Inc. 2013 Stock Option and Grant Plan and forms of award agreements thereunder (incorporated by reference to Exhibit 10.2 of the Registrant’s Annual
Report on Form 10-K (File No. 001-37998) filed March 8, 2018)
Jounce Therapeutics, Inc. 2017 Employee Stock Purchase Plan, As Amended (incorporated by reference to Exhibit 10.1 of the Registrant’s Quarterly Report on Form 10-Q (File
No. 001-37998) filed November 13, 2017)
Amended and Restated Non-Employee Director Compensation Policy
Amended and Restated Employment Agreement between Richard Murray and the Registrant, dated January 6, 2017 (incorporated by reference to Exhibit 10.4 of the Registrant’s
Registration Statement on Form S-1/A (File No. 333-215372) filed January 17, 2017)
Amended and Restated Employment Agreement between Kim Drapkin and the Registrant, dated January 6, 2017 (incorporated by reference to Exhibit 10.5 of the Registrant’s
Registration Statement on Form S-1/A (File No. 333-215372) filed January 17, 2017)
Amended and Restated Employment Agreement between Elizabeth Trehu and the Registrant, dated January 6, 2017 (incorporated by reference to Exhibit 10.6 of the Registrant’s
Registration Statement on Form S-1/A (File No. 333-215372) filed January 17, 2017)
Employment Agreement between Hugh Cole and the Registrant, dated August 14, 2017 (incorporated by reference to Exhibit 10.8 of the Registrant’s Annual Report on Form 10-
K (File No. 001-37998) filed March 8, 2018)
Form of Director Indemnification Agreement (incorporated by reference to Exhibit 10.12 of the Registrant’s Registration Statement on Form S-1 (File No. 333-215372) filed
December 30, 2016)
Form of Officer Indemnification Agreement (incorporated by reference to Exhibit 10.13 of the Registrant’s Registration Statement on Form S-1/A (File No. 333-215372) filed
January 17, 2017)
Senior Executive Cash Incentive Bonus Plan (incorporated by reference to Exhibit 10.14 of the Registrant’s Registration Statement on Form S-1/A (File No. 333-215372) filed
January 17, 2017)
Lease Agreement between ARE-770/784/790 Memorial Drive, LLC and the Registrant, dated November 1, 2016 (incorporated by reference to Exhibit 10.11 of the Registrant’s
Registration Statement on Form S-1 (File No. 333-215372) filed December 30, 2016)
Amended and Restated Exclusive License Agreement between Sloan Kettering Institute for Cancer Research, Memorial Sloan Kettering Cancer Center and Memorial Hospital for
Cancer and the Registrant, dated September 28, 2015 (incorporated by reference to Exhibit 10.9 of the Registrant’s Registration Statement on Form S-1 (File No. 333-215372)
filed December 30, 2016)
License Agreement by and between the Registrant and Gilead Sciences, Inc., dated August 31, 2020 (incorporated by reference to Exhibit 10.1 of the Registrant’s Quarterly Report
on Form 10-Q (File No. 001-37998) filed on November 6, 2020)
Stock Purchase Agreement by and between the Registrant and Gilead Sciences, Inc., dated August 31, 2020 (incorporated by reference to Exhibit 10.2 of the Registrant’s Quarterly
Report on Form 10-Q (File No. 001-37998) filed on November 6, 2020)
Registration Rights Agreement by and between the Registrant and Gilead Sciences, Inc., dated August 31, 2020 (incorporated by reference to Exhibit 10.3 of the Registrant’s
Quarterly Report on Form 10-Q (File No. 001-37998) filed on November 6, 2020)
Sales Agreement, dated of November 4, 2021 by and between the Registrant and Cowen and Company, LLC (incorporated by reference to Exhibit 1.1 of the Registrant’s Current
Report on Form 8-K (File No. 001-37998) filed November 4, 2021)
List of Subsidiaries of the Registrant
Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm
Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the
Sarbanes-Oxley Act of 2002
Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the
Sarbanes-Oxley Act of 2002
Certifications of 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
The following materials from the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, formatted in eXtensible Business Reporting Language (XBRL):
(i) Consolidated Balance Sheets, (ii) Consolidated Statements of Operations and Comprehensive Income (Loss), (iii) Consolidated Statements of Stockholders’ Equity, (iv)
Consolidated Statements of Cash Flows and (v) Notes to Consolidated Financial Statements

Filed herewith

Furnished herewith
Indicates a management contract or any compensatory plan, contract or arrangement

Confidential treatment granted as to portions of the exhibit. Confidential materials omitted and filed separately with the Securities and Exchange Commission pursuant to Rule 406 of the Securities Act of 1933, as amended

Portions of this Exhibit have been omitted pursuant to Item 601(b)(10)(iv) of Regulation S-K

Table of Contents

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by
the undersigned, thereunto duly authorized.

SIGNATURES

Date: March 2, 2022

JOUNCE THERAPEUTICS, INC.

By:

/s/ Richard Murray
Richard Murray, Ph.D.
President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in
the capacities and on the dates indicated.    

Signature

/s/ Richard Murray
Richard Murray, Ph.D.

/s/ Kim C. Drapkin
Kim C. Drapkin

/s/ Perry A. Karsen
Perry A. Karsen

/s/ Luis A. Diaz, Jr.
Luis A. Diaz, Jr., M.D.

/s/ Barbara Duncan
Barbara Duncan

/s/ J. Duncan Higgons
J. Duncan Higgons

/s/ Robert Iannone
Robert Iannone, M.D., M.S.C.E.

/s/ Robert Kamen
Robert Kamen, Ph.D.

/s/ Jigar Raythatha
Jigar Raythatha

/s/ Luisa Salter-Cid
Luisa Salter-Cid, Ph.D.

President, Chief Executive Officer and Director (Principal
Executive Officer)

Title

Treasurer and Chief Financial Officer
(Principal Financial and Accounting Officer)

Chairman of the Board of Directors

Director

Director

Director

Director

Director

Director

Director

Date

March 2, 2022

March 2, 2022

March 2, 2022

March 2, 2022

March 2, 2022

March 2, 2022

March 2, 2022

March 2, 2022

March 2, 2022

March 2, 2022

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 10.6

Jounce Therapeutics, Inc.
Amended and Restated Non-Employee Director Compensation Policy

The purpose of this Non-Employee Director Compensation Policy (the “Policy”) of Jounce Therapeutics, Inc., a Delaware corporation
(the “Company”), is to provide a total compensation package that enables the Company to attract and retain, on a long-term basis, high-
caliber  directors  who  are  not  employees  or  officers  of  the  Company.  This  Policy  will  become  effective  (the  “Effective  Date”)  upon
approval by the Company’s Board of Directors (the “Board”). In furtherance of this purpose, all non-employee directors shall be paid
compensation for services provided to the Company as set forth below:

Cash Retainers

Annual  Retainer  for  Board  Membership:  $40,000  for  general  availability  and  participation  in  meetings  and  conference  calls  of  our
Board. No additional compensation for attending individual Board meetings.

Additional Annual Retainer for Non-Executive Chairperson of the Board: $30,000 to acknowledge the additional responsibilities and
time commitment of the Chairperson role.

Additional Annual Retainers for Committee Membership:

Audit Committee Chairperson:     $15,000

Audit Committee member:     $7,500

Compensation Committee Chairperson:         $12,500

Compensation Committee member:     $6,000

Nominating and Corporate Governance Committee Chairperson:     $8,000

Nominating and Corporate Governance Committee member:     $4,000

Science and Technology Committee Chairperson:         $12,500

Science and Technology Committee member:     $6,000

No additional compensation for attending individual committee meetings.

All cash retainers will be paid quarterly, in arrears, or upon the earlier of resignation or removal of the non-employee director. Cash
retainers owing to non-employee directors shall be annualized, meaning that with respect to non-employee directors who join the Board
during the calendar year, such amounts shall be pro-rated based on the number of calendar days served by such director following such
director’s appointment or election.

Equity Retainers

Initial Option Grant: One-time option grant to each new non-employee director upon his/her election to the Board after the Effective
Date to purchase 31,400 shares of common stock, par value $0.001 per share (the Common Stock”). Such initial option grant shall be
made  upon  the  director  first  becoming  a  director.  Such  initial  option  grant  shall  vest  in  equal  quarterly  installments  during  the  12
quarters following the grant date, subject to the director’s continued service on the Board.

On  the  date  of  each  Annual  Meeting  of  Stockholders:  Annual  option  grant  to  each  non-employee  director  serving  on  the  Board
immediately following the Company’s annual meeting of stockholders to purchase 15,700 shares of Common Stock, provided that if at
such time a director has served on the Board for less than 270 days, the number of shares subject to such option shall be reduced to the
applicable amount set forth below based on such director’s length of service on the Board as of such time:

Length of Service on Board as of
Annual Meeting Date
180 days or more, but less than 270 days
90 days or more, but less than 180 days
Less than 90 days

Number of Option Shares

11,776
7,850
0

Such  annual  option  grant  shall  vest  in  equal  quarterly  installments  during  the  4  quarters  following  the  grant  date,  subject  to  the
director’s continued service on the Board, provided that if the Company’s next annual meeting of stockholders is held prior to the first
anniversary of the grant date, the vesting of such annual option will accelerate in full as of the date of such next annual meeting of
stockholders, subject to the director’s continued service on the Board as of immediately prior to such next annual meeting.

All of the foregoing option grants will become immediately exercisable upon the death, disability of a director or upon a Sale Event (as
defined in the Company’s 2017 Stock Option and Incentive Plan). In addition, if the option grants described above are in the form of
options to purchase the Company’s common stock, par value $0.001 per share (the “Common Stock”), the directors will have until the
earlier of one year following cessation of service as a director or the original expiration date of the option to exercise the option (to the
extent vested at the date of such cessation), provided that the director has not been removed for cause.

Any stock option granted to a non-employee director pursuant to this Policy will be granted at an exercise price equal to the fair market
value of a share of Common Stock on the date of grant.

Expenses

The  Company  shall  reimburse  all  reasonable  out-of-pocket  expenses  incurred  by  non-employee  directors  in  attending  Board  and
committee meetings.

ADOPTED AND EFFECTIVE: December 3, 2021.

Subsidiaries of the Registrant

Exhibit 21.1

Name
Jounce Mass Securities, Inc.

Jurisdiction of Organization
Massachusetts

Percentage Ownership
100%

We consent to the incorporation by reference in the following Registration Statements:

Consent of Independent Registered Public Accounting Firm

a. Registration Statement (Form S-3 No 333-255760) of Jounce Therapeutics, Inc.,
b. Registration Statement (Form S-8 No. 333-215794) pertaining to the Jounce Therapeutics, Inc. 2013 Stock Option and Grant Plan, the Jounce

Therapeutics, Inc. 2017 Stock Option and Incentive Plan and the Jounce Therapeutics, Inc. 2017 Employee Stock Purchase Plan, and

c. Registration Statements (Form S-8 Nos. 333-223519, 333-230088, 333-236687, and 333-253496) pertaining to the Jounce Therapeutics, Inc. 2017 Stock

Option and Incentive Plan and the Jounce Therapeutics, Inc. 2017 Employee Stock Purchase Plan;

of our report dated March 2, 2022, with respect to the consolidated financial statements of Jounce Therapeutics, Inc. included in this Annual Report (Form 10-K)
for the year ended December 31, 2021.

/s/ Ernst & Young LLP                                                    

Exhibit 23.1

Boston, Massachusetts
March 2, 2022

Exhibit 31.1

I, Richard Murray, certify that:

1. I have reviewed this Annual Report on Form 10-K of Jounce Therapeutics, Inc.;

CERTIFICATIONS

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements
made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial
condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act
Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and
have:

    a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that
material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the
period in which this report is being prepared;

    b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with
generally accepted accounting principles;

    c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the
disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

    d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter
(the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal
control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s
auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

    a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to
adversely affect the registrant’s ability to record, process, summarize and report financial information; and

    b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial
reporting.

Date: March 2, 2022

By:

/s/ Richard Murray
Richard Murray, Ph.D.
President and Chief Executive Officer
(Principal Executive Officer)

Exhibit 31.2

I, Kim C. Drapkin, certify that:

1. I have reviewed this Annual Report on Form 10-K of Jounce Therapeutics, Inc.;

CERTIFICATIONS

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements
made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial
condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act
Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and
have:

    a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that
material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the
period in which this report is being prepared;

    b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with
generally accepted accounting principles;

    c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the
disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

    d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter
(the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal
control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s
auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

    a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to
adversely affect the registrant’s ability to record, process, summarize and report financial information; and

    b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial
reporting.

Date: March 2, 2022

By:

/s/ Kim C. Drapkin
Kim C. Drapkin
Treasurer and Chief Financial Officer
(Principal Financial and Accounting Officer)

CERTIFICATIONS OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.1

In connection with this Annual Report on Form 10-K of Jounce Therapeutics, Inc. (the “Company”) for the year ended December 31, 2021, as filed with the
Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned officers of the Company hereby certifies, pursuant to 18 U.S.C.
Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of her or his knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: March 2, 2022

Date: March 2, 2022

By:

By:

/s/ Richard Murray
Richard Murray, Ph.D.
President and Chief Executive Officer
(Principal Executive Officer)

/s/ Kim C. Drapkin
Kim C. Drapkin
Treasurer and Chief Financial Officer
(Principal Financial and Accounting Officer)