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Agios Pharmaceuticals, Inc.

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FY2023 Annual Report · Agios Pharmaceuticals, Inc.
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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

☐

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

For the fiscal year ended December 31, 2023

OR

Commission File Number:

001-36014

AGIOS PHARMACEUTICALS, INC.
(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of
incorporation or organization)
88 Sidney Street,
Cambridge, MA
(Address of principal executive offices)

26-0662915
(IRS Employer
Identification No.)
02139

(Zip Code)

Title of Class
Common Stock, Par Value $0.001 per share

Registrant’s telephone number, including area code:
(617) 649-8600
Securities registered pursuant to Section 12(b) of the Act:
Trading symbol(s)
AGIO

Name of 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  ☐

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

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

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§

232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  ☑        No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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.
Emerging growth
Large accelerated filer  ☑
company  ☐

Smaller reporting
company  ☐

Non-accelerated filer  ☐

Accelerated filer  ☐

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

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

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

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

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the

correction of an error to previously issued financial statements.    ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the

registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b).    ☐

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

The aggregate market value of the voting and non-voting Common Stock held by non-affiliates of the registrant computed by reference to the price of the registrant’s Common

Stock as of June 30, 2023 (based on the last reported sale price on the Nasdaq Global Select Market as of such date) was $1,557,785,326.

As of February 9, 2024, there were 56,194,847 shares of Common Stock, $0.001 par value per share, outstanding.

 
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DOCUMENTS INCORPORATED BY REFERENCE
Portions of the registrant’s definitive proxy statement for its 2024 Annual Meeting of Stockholders to be filed pursuant to Regulation 14A within 120 days of the end of the

registrant’s fiscal year ended December 31, 2023 are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent stated herein.

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Item 1.
Item 1A.
Item 1B.
Item 1C.
Item 2.
Item 3.
Item 4.

Item 5.

Item 6.
Item 7.
Item 7A.
Item 8.
Item 9.
Item 9A.
Item 9B.
Item 9C.

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

Item 15.
Item 16.

Table of Contents

PART I

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

PART II

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 about Market Risk
Financial Statements and Supplementary Data
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
Controls and Procedures
Other Information
Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

PART III

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

Exhibits and Financial Statement Schedules
Form 10-K Summary

PART IV

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References to Agios

PART I

Throughout this Annual Report on Form 10-K, “the Company,” “Agios,” “we,” “us,” and “our,” and similar expressions, except where the context requires
otherwise,  refer  to  Agios  Pharmaceuticals,  Inc.  and  its  consolidated  subsidiaries,  and  “our  board  of  directors”  refers  to  the  board  of  directors  of  Agios
Pharmaceuticals, Inc.

Cautionary Note Regarding Forward-looking Information

This  Annual  Report  on  Form  10-K  contains  forward-looking  statements  that  involve  substantial  risks  and  uncertainties.  All  statements,  other  than
statements of historical fact, 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, and objectives of management, are forward-looking statements. The words “aim,” “anticipate,”
“believe,”  “continue,”  “could,”  “estimate,”  “expect,”  “goal,”  “intend,”  “may,”  “might,”  “plan,”  “potential,”  “predict,”  “project,”  “should,”  “strategy,”
“target,” “vision,” “will,” “would” or the negatives of these words and similar expressions are intended to identify forward-looking statements, although
not all forward-looking statements contain these identifying words.

The forward-looking statements in this Annual Report on Form 10-K include, among other things, statements regarding:

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our commercialization efforts and plans to commercialize PYRUKYND® (mitapivat);

the  initiation,  timing,  progress  and  results  of  current,  planned  and  future  preclinical  studies  and  clinical  trials,  and  our  research  and
development programs;

the potential of the isoforms of pyruvate kinase, including pyruvate kinase-R, or PKR, as therapeutic targets;
the potential benefits of our products and product candidates targeting PKR, including PYRUKYND® (mitapivat) and AG-946, and of our product
candidate in our phenylalanine hydroxylase, or PAH, stabilizer program, AG-181;

our plans to develop and commercialize any additional product candidates for which we may receive approval, either alone or with partners;

our ability to establish and maintain collaborations or to obtain additional funding, if needed;

the timing or likelihood of regulatory filings and approvals;

our strategic vision;

the timing, likelihood and amount of contingent consideration we may receive from Servier Pharmaceuticals LLC, or Servier, in connection
with the sale of our oncology business to Servier that we consummated in March 2021;
the amount and timing of future milestone and royalty payments potentially payable to Alnylam Pharmaceuticals, Inc. pursuant to the license
agreement entered into in July 2023;

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

our commercialization, sales, marketing and manufacturing capabilities and strategy;

the rate and degree of market acceptance and clinical utility of our products;

our competitive position;

our intellectual property position;

developments and projections relating to our competitors and our industry;

our estimates regarding our expenses, future revenue, capital requirements and needs for additional financing; and
the potential impact of public health epidemics or pandemics, including the COVID-19 pandemic, and of global economic developments on our
business, operations, strategy and goals.

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 this Annual Report on Form 10-K, particularly in the “Summary Risk Factors” and
“Risk  Factors”  sections,  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,  in-licensing  arrangements,  mergers,  dispositions,  joint  ventures  or
investments 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. 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 law.

This Annual Report on Form 10-K includes statistical and other industry and market data that we obtained from industry publications and research, surveys
and studies conducted by third parties as well as our own estimates of potential market

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opportunities. All of the market data used in this Annual Report on Form 10-K involves a number of assumptions and limitations, and you are cautioned
not  to  give  undue  weight  to  such  data.  We  believe  that  the  information  from  these  industry  publications,  research,  surveys  and  studies  is  reliable.  The
industry  in  which  we  operate  is  subject  to  a  high  degree  of  uncertainty  and  risk  due  to  a  variety  of  important  factors,  including  those  described  in  the
sections titled “Summary Risk Factors” and “Risk Factors.”

Summary Risk Factors

Our business is subject to a number of risks that if realized could materially affect our business, financial condition, results of operations, cash flows and
access to liquidity. These risks are discussed more fully in the “Risk Factors” section of this Annual Report on Form 10-K. Our principal risks include the
following:

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If  we  do  not  successfully  commercialize  PYRUKYND®  for  the  treatment  of  adults  with  PK  deficiency  in  the  approved  jurisdictions  and  other
products for which we receive approval, our prospects may be substantially harmed. Our ability to generate product revenue from PYRUKYND®
depends heavily on our successful development and commercialization of the product.

We depend heavily on the success of our clinical-stage product candidates, including the potential approval of PYRUKYND® for use in indications
other  than  PK  deficiency  and  in  other  jurisdictions.  Clinical  trials  of  our  product  candidates  may  not  be  successful  for  a  number  of  important
reasons. If we or our collaborators are unable to commercialize our product candidates or experience significant delays in doing so, our business will
be materially harmed.

We may engage in in-licensing transactions or acquisitions that could disrupt our business, cause dilution to our stockholders or reduce our financial
resources.

The outcome of preclinical studies and early clinical trials may not be predictive of the success of later clinical trials, and interim or topline results of
clinical  trials  do  not  necessarily  predict  success  in  future  clinical  trials.  The  results  of  clinical  trials  of  PYRUKYND®  for  the  treatment  of  PK
deficiency do not predict that PYRUKYND® will be efficacious in our clinical trials in other indications.

We may expend our limited resources to pursue a particular product candidate or indication and fail to capitalize on product candidates or indications
that may be more profitable or for which there is a greater likelihood of success.

PYRUKYND®, or any of our product candidates that may receive marketing approval in the future, may be less effective than previously believed
or  cause  undesirable  side  effects  that  were  not  previously  identified  in  clinical  trials  or  may  fail  to  achieve  the  degree  of  market  acceptance  by
physicians, patients, healthcare payors and others in the medical community necessary for commercial success, which could compromise our ability,
or that of any collaborators, to market the product.

If we are unable to establish and maintain sales and marketing capabilities or enter into agreements with third parties to sell and market our products,
we may not be successful in commercializing PYRUKYND® or our product candidates if they are approved.

We  provide  certain  development  estimates  related  to  the  development  of  PYRUKYND®  and  our  product  candidates.  If  we  do  not  achieve  our
projected development estimates in the timeframes we announce and expect, the commercialization of our products may be delayed and, as a result,
our stock price may decline.

We face substantial competition, which may result in others discovering, developing or commercializing products before or more successfully than
we  do.  There  are  a  number  of  large  pharmaceutical  and  biotechnology  companies  that  currently  market  and  sell  products  or  are  pursuing  the
development  of  products  for  the  treatment  of  the  indications  for  which  we  are  developing  PYRUKYND®  or  our  product  candidates.  Our
competitors may develop products that are more effective, safer, more convenient or less costly than PYRUKYND® or any product candidates that
we are developing or that would render PYRUKYND® or our product candidates obsolete or non-competitive.

We are singularly focused on products and product candidates for the treatment of rare diseases. As a result, we may be more susceptible to changing
market conditions, including fluctuations and risks particular to the markets for patients with rare diseases, than a more diversified company, which
could adversely affect our business, financial condition and results of operations.

If our existing capital is insufficient to fund our operating expenses and capital expenditures, we will need to raise capital, and if we are unable to
raise capital when needed, we would be forced to delay, reduce or eliminate our product development programs or commercialization efforts.

We have historically incurred operating losses. We expect to incur losses in the future and may never achieve or maintain profitability. Our net loss
for  the  year  ended  December  31,  2023  was  $352.1  million,  our  net  loss  for  the  year  ended  December  31,  2022  was  $231.8  million  and  our  net
income for the year ended December 31, 2021 was $1.6 billion. The net income we generated in the year ended December 31, 2021 was due to the
sale of our oncology business to Servier in March 2021. As of December 31, 2023, we had an accumulated deficit of $822.6 million.

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We currently rely and expect to continue to rely on third parties for the manufacture of our product candidates for preclinical and clinical testing and
for commercial supply of PYRUKYND® and any product candidate for which we may obtain marketing approval. Any performance failure on the
part of our existing or future third-party manufacturers could delay clinical development, marketing approval or our commercialization efforts.

We rely and expect to continue to rely on third parties to conduct our clinical trials and some aspects of our research and preclinical testing, and
those third parties may not perform satisfactorily, including failing to meet deadlines for the completion of such trials, research or testing.

We may depend on collaborations with third parties for the development and commercialization of our product candidates. If those collaborations are
not successful, we may not be able to capitalize on the market potential of these product candidates.

If we are unable to obtain and maintain patent or trade secret protection for our medicines and technology, or if the scope of the patent protection
obtained is not sufficiently broad, our competitors could develop and commercialize medicines and technology similar or identical to ours, and our
ability to successfully commercialize our medicines and technology may be adversely affected. If we do not, or are unable to, obtain or maintain any
issued  patents  for  any  of  our  most  advanced  product  candidates,  it  could  have  a  material  adverse  effect  on  our  competitive  position,  business,
financial condition, results of operations, and prospects.

Item 1. Business

General

We  are  a  biopharmaceutical  company  committed  to  transforming  patients’  lives  through  leadership  in  the  field  of  cellular  metabolism,  with  the  goal  of
creating differentiated medicines for rare diseases, with a focus on classical hematology. With a history of focused study on cellular metabolism, we have a
deep and mature understanding of this biology, which is involved in the healthy functioning of nearly every system in the body. Building on this expertise,
these  learnings  can  be  rapidly  applied  to  our  clinical  trials  with  the  goal  of  developing  medicines  that  can  have  a  significant  impact  for  patients.  We
accelerate the impact of our portfolio by cultivating connections with patient communities, healthcare professionals, partners and colleagues to discover,
develop and deliver potential therapies for rare diseases.

Business Overview

Rare diseases

The lead product candidate in our portfolio, PYRUKYND® (mitapivat), is an activator of both wild-type and mutant pyruvate kinase, or PK, enzymes for
the  potential  treatment  of  hemolytic  anemias.  In  February  2022,  the  U.S.  Food  and  Drug  Administration,  or  FDA,  approved  PYRUKYND®  for  the
treatment  of  hemolytic  anemia  in  adults  with  PK  deficiency  in  the  United  States.  In  November  2022,  we  received  marketing  authorization  from  the
European  Commission  for  PYRUKYND®  for  the  treatment  of  PK  deficiency  in  adult  patients  in  the  European  Union,  or  EU.  In  December  2022,  we
received marketing authorization in Great Britain for PYRUKYND® for the treatment of PK deficiency in adult patients under the European Commission
Decision Reliance Procedure. In addition, we are currently evaluating PYRUKYND® in clinical trials for the treatment of thalassemia, sickle cell disease,
or SCD, and in pediatric patients with PK deficiency. We are also developing (i) AG-946, a novel PK activator, for the potential treatment of lower-risk
myelodysplastic  syndrome,  or  LR  MDS,  and  hemolytic  anemias,  and  (ii)  AG-181,  our  phenylalanine  hydroxylase,  or  PAH,  stabilizer  for  the  potential
treatment of phenylketonuria, or PKU.

In  addition  to  the  aforementioned  development  programs,  in  July  2023  we  entered  into  a  license  agreement  with  Alnylam  Pharmaceuticals,  Inc.,  or
Alnylam for the development and commercialization of products containing or comprised of an siRNA preclinical development candidate discovered by
Alnylam  and  targeting  the  transmembrane  serine  protease  6,  or  TMPRSS6,  gene  and  we  intend  to  pursue  development  of  a  licensed  product  for  the
potential disease-modifying treatment of patients with polycythemia vera, or PV, a rare blood disorder.

Alnylam License Agreement

In accordance with the license agreement with Alnylam, in the year ended December 31, 2023, we made an up-front payment to Alnylam and recognized
in-process research and development of $17.5 million. We will also pay Alnylam for certain expenses associated with the development of the TMPRSS6
gene. Additionally, we are responsible to pay up to $130.0 million in potential development and regulatory milestones, in addition to sales milestones as
well as tiered royalties on annual net sales, if any, of licensed products, which may be subject to specified reductions and offsets. Because the acquired
assets  under  the  license  agreement  with  Alnylam  do  not  meet  the  definition  of  a  business  in  accordance  with  ASC  805,  Business  Combinations,  we
accounted for the agreement as an asset acquisition.

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Sale of Oncology Business to Servier and Sale of Contingent Payments

On March 31, 2021, we completed the sale of our oncology business, including TIBSOVO®, our clinical-stage product candidates vorasidenib, AG-270
and  AG-636,  and  our  oncology  research  programs,  to  Servier,  for  a  payment  of  approximately  $1.8  billion  in  cash  at  the  closing,  subject  to  certain
adjustments, and a payment of $200.0 million in cash, if, prior to January 1, 2027, vorasidenib is granted new drug application approval from the FDA with
an  approved  label  that  permits  vorasidenib’s  use  as  a  single  agent  for  the  adjuvant  treatment  of  patients  with  Grade  2  glioma  that  have  an  isocitrate
dehydrogenase  1  or  2  mutation  (and,  to  the  extent  required  by  such  approval,  the  vorasidenib  companion  diagnostic  test  is  granted  an  FDA  premarket
approval), as well as a royalty of 5% of U.S. net sales of TIBSOVO® from the close of the transaction through loss of exclusivity, and a royalty of 15% of
U.S.  net  sales  of  vorasidenib  from  the  first  commercial  sale  of  vorasidenib  through  loss  of  exclusivity,  with  these  royalties  referred  to  as  contingent
payments and recognized as income when realizable. Servier also acquired our co-commercialization rights for Bristol Myers Squibb’s IDHIFA® and the
right to receive a $25.0 million potential milestone payment under our prior collaboration agreement with Celgene Corporation, or Celgene, and Servier is
responsible for conducting certain clinical development activities within the IDHIFA® development program.

In October 2022, we sold our rights to future contingent payments associated with the royalty of 5% of U.S. net sales of TIBSOVO® from the close of the
transaction through the loss of exclusivity to entities affiliated with Sagard Healthcare Partners, or Sagard, and recognized income of $127.9 million within
the gain on sale of contingent payments line item in our consolidated statements of operations for the year ended December 31, 2022. We retain our rights
to the potential milestone payment and royalties from Servier if a new drug application for vorasidenib is approved by the FDA.

In November 2023, Servier announced that it was planning to submit a new drug application, or NDA, for vorasidenib for the treatment of IDH-mutant
diffuse glioma to the FDA by the end of 2023 and to the European Medicines Agency, or EMA, in early 2024.

Our Strategy and Long-term Goals

As part of our long-term strategy, we have developed and articulated a strategic vision that delineates our expected evolution in light of our focus on rare
diseases. We aim to build a sustainable, value-creating company, based on our expertise in cellular metabolism and classical hematology, that develops and
delivers differentiated medicines for patients.

By  2026,  our  vision  is  to:  establish  a  classical  hematology  franchise  with  PYRUKYND®  approvals  across  PK  deficiency,  thalassemia  and  SCD;  and
expand our portfolio by advancing AG-946, AG-181 and our preclinical pipeline as well as through disciplined business development aligned with our core
therapeutic focus areas and capabilities.

Our Core Values

Our  values  cultivate  an  environment  that  promotes  collaboration,  contribution,  engagement  and  high  regard  for  others’  points  of  view.  This  foundation
helps  our  people  push  the  boundaries  of  our  science  and  create  transformative  medicines,  which  we  believe  will  provide  long-term  benefits  for  all  our
stakeholders. Our connections – with each other and with external parties – fuel the development of new therapies for the people who need them. Our core
values include:

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Aim High: We set the bar high for ourselves, and we keep working to raise it. At our core, we’re guided by a deep respect for the science and a
commitment always to act with the utmost integrity.

Come Together:  We  grow  supportive  relationships  with  patients  and  caregivers.  We  build  trusting  connections  with  collaborators.  Together,  we
make a bigger impact than we ever could alone.

Embrace Differences: Because opportunities and insights come from anywhere and anyone, we honor all voices and encourage honest dialogue. We
learn equally from success and failure, bringing an open mind and a flexible approach to everything we do.

Bring Your Whole Self: We know we make the biggest impact when each of us can contribute and lead in our own way.

Blaze New Trails: We ask the tough questions that can lead to groundbreaking scientific advances. We nurture a creative mindset and resourceful
approach that spark life-changing innovations for patients.

Cellular Metabolism

Cellular  metabolism  is  involved  in  the  healthy  functioning  of  nearly  every  system  in  the  body  and  refers  to  the  set  of  life-sustaining  chemical
transformations within the cells of living organisms. The conversion of nutrients into energy via enzyme-catalyzed reactions allows organisms to grow and
reproduce,  maintain  their  structures,  and  respond  to  their  environments.  Additionally,  metabolites  serve  as  key  regulators  of  diverse  aspects  of  cellular
biology, and pharmacologic targeting of metabolism can therefore have disease-modifying effects in a wide variety of pathologies. The chemical reactions
of metabolism are organized into metabolic pathways, in which one chemical is transformed through a series of steps into another

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chemical,  by  a  sequence  of  enzymes.  Enzymes  catalyze  quick  and  efficient  reactions,  serve  as  key  regulators  of  metabolic  pathways,  and  respond  to
changes in the cell’s environment or signals from other cells.

Rare diseases

Diseases  are  typically  considered  rare  if  they  affect  fewer  than  200,000  people  in  the  United  States,  or  fewer  than  five  per  10,000  people  in  France,
Germany,  Italy,  Spain,  United  Kingdom,  or  the  EU5.  Many  rare  diseases  are  likely  to  be  under-diagnosed  given  the  lack  of  available  therapies  or
diagnostics, the rarity of the condition, or limited understanding of how the disease genetics relate to the disease phenotype. It has been shown that small
molecule  therapies  able  to  specifically  correct  genetic  deficiencies  and  their  associated  organ  dysfunction  may  have  application  in  conditions  that  arise
independent of patient genetics but for which identical organ dysfunction occurs. For example, a treatment for a hereditary hemolytic anemia may find
direct application in the treatment of a secondarily acquired hemolytic anemia.

Many rare diseases carry severe or life-threatening features. In many of these disorders, the defect of single or multiple genes leads to a deficient expression
or function in one or several gene products which collectively manifest in organ dysfunction. As these conditions are by nature congenital and frequently
hereditary,  they  are  often  detected  either  by  genetic  testing  or  phenotypic  diagnosis  in  newborns  or  in  early  childhood.  A  typical  course  of  many  such
diseases is inexorable deterioration until death or significant irreversible life-long disability and/or suffering.

Current treatment options for these disorders are generally limited. Severe and sustained diet modification or nutrient supplementation can be beneficial in
certain  rare  diseases.  Several  of  these  disorders,  from  a  group  known  as  lysosomal  storage  diseases,  have  been  treated  successfully  with  enzyme
replacement  therapy,  or  ERT,  the  therapeutic  administration  of  a  functional  version  of  the  defective  enzyme.  Examples  of  ERTs  for  lysosomal  storage
disorders include Fabrazyme® for Fabry disease, Myozome® for Pompe disease, Cerezyme® for Gaucher disease, and Elaprase® for Hunter syndrome. In
addition, treatment of polygenic conditions such as achondroplasia by Vosoritide® and the monogenic condition, spinal muscular atrophy by gene therapy
with Zolgensma® and Spinraza® represent novel technologic approaches to addressing rare diseases.

Most  mutations  driving  rare  diseases  are  intracellular  and  not  amenable  to  corrective  treatment  with  ERTs.  Novel  technologic  approaches  such  as  gene
therapy  are  also  being  tested  in  a  minority  of  conditions  and  are  technologies  with  limited  application  based  on  cost,  complexity  and  patient  selection
factors.  Despite  the  promising  progress  made  for  patients  with  a  small  group  of  rare  diseases,  the  majority  of  patients  with  these  diseases  have  few
therapeutic options, and the standard of care for many such conditions is palliative, meaning treatment of symptoms with no effect on underlying disease
mechanisms.  Our  goal  is  to  develop  mechanistically  specific,  small  molecule  approaches  with  the  potential  to  have  disease  modifying  and  long-term
effects, rather than palliative effects. We are taking a novel small molecule approach to correct the defects within diseased cells with a goal of developing
transformative medicines for patients.

Classical hematology

Classical hematology refers to the study and treatment of blood disorders that are not cancerous, including thrombotic and hemorrhagic disorders, anemia,
thrombocytopenia, disorders of iron metabolism and hemoglobin disorders. Many of these diseases are debilitating, have a negative impact on patients’
quality of life and are associated with severe complications and/or shortened life expectancy. Despite the significant need for novel therapies and improved
patient  care,  there  is  a  shortage  of  research  and  trained  specialists  in  the  field  of  classical  hematology,  and  patients  with  these  disorders  are  often
underserved and experience health disparities and inequity. In addition, even in diseases in which some progress has been made, large subsets of the disease
may remain underserved. Our goal is to develop transformative oral treatments for patients with various classical hematological disorders through broad
clinical development programs in order to address the unmet needs of a large range of patients.

Our Development Programs

We believe that leveraging our core capabilities in cellular metabolism combined with our singular focus on rare diseases and our differentiated expertise in
classical hematology has significantly enhanced our ability to advance new therapeutic candidates and bring innovative medicines to patients in need. We
have a proven track record of developing new therapeutic approaches and multiple proprietary first-in-class orally available small molecules.

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The following summarizes our approved product and most advanced clinical product candidates, each of which is described in further detail below.

PK Activator Programs

PK is an enzyme involved in glycolysis — the conversion of glucose into lactic acid. This enzyme has several tissue-specific isoforms (PKR, PKL, PKM1
and  PKM2).  Pyruvate  kinase-R,  or  PKR,  is  the  isoform  of  PK  that  is  present  in  red  blood  cells,  or  RBCs.  Mutations  in  PKR  cause  defects  in  RBC
glycolysis and lead to a hematological rare disease known as PK deficiency. Glycolysis is the only pathway available for RBCs to maintain the production
of adenosine triphosphate, or ATP, which is a form of chemical energy within cells. Accordingly, we believe that activation of mutant forms of PKR can
restore glycolytic pathway activity and increase RBC health in patients with PK deficiency, and activation of wild-type (non-mutated) PKR can increase
ATP which can then meet the increased energy demands resulting from metabolic stress in RBCs of patients with hemolytic anemias such as thalassemia
and SCD.

PK Deficiency

PK  deficiency  is  a  rare  genetic  disorder  and  disease  understanding  is  still  evolving.  We  estimate  that  the  prevalence  of  PK  deficiency  is  between
approximately 3,000 and 8,000 individuals in the United States and EU5, and believe that the disease is likely under-diagnosed. PK deficiency leads to a
shortened life span for RBCs and is the most common form of non-spherocytic hemolytic anemia in humans.

There is currently no known unique ethnic or geographic representation of the disease. The disease manifests by mild to severe forms of anemia caused by
the excessive premature destruction of RBCs. The chronic hemolysis can lead to long-term complications and comorbidities, regardless of the degree of the
anemia, often resulting in jaundice and lifelong conditions

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associated with chronic anemia and secondary complications. The precise mechanism for the hemolysis is not well understood but is thought to result from
membrane instability secondary to the metabolic defect caused by the low level of PKR enzyme. The hemolysis is “extra-vascular” in that the RBCs are
destroyed in small capillaries or organs and do not spontaneously break open in the circulation. PK deficiency is an autosomal recessive disease whereby
all patients inherit two mutations, one from each parent. Children with the disease produce PKR enzyme that has only a fraction of the normal level of
activity (generally <50%). Current management strategies for PK deficiency, including blood transfusion and splenectomy, are associated with both short-
and long-term risks. More than 350 different mutations have been identified to date. As a result, there are many different possible mutant combinations and
no  one  clear  mutational  profile.  The  mutations  observed  in  PK  deficiency  patients  are  classified  in  two  main  categories.  A  missense  mutation  causes  a
single amino acid change in the protein, generally resulting in some functional protein in the RBCs. A non-missense mutation is any mutation other than a
missense  mutation,  generally  resulting  in  little  functional  protein  in  the  RBCs.  It  is  estimated  that  58  percent  of  patients  with  PK  deficiency  have  two
missense mutations, 27 percent have one missense and one non-missense mutation, and 15 percent have two non-missense mutations. Boston Children’s
Hospital, in collaboration with us, is conducting a Natural History Study to better understand the symptoms and complications of PK deficiency, identify
patients and treatment centers, and capture other clinical data, including genetic information. We maintain a global registry, called Peak, for up to 500 adult
and pediatric patients with PK deficiency to increase understanding of the long-term disease burden of this chronic hemolytic anemia.

Thalassemia

Thalassemia is a hereditary blood disorder in which mutations in the α- or β-globin chains of hemoglobin lead to globin chain precipitates and aggregates
that  disturb  the  RBC  membrane  and  induce  oxidative  stress,  leading  to  decreased  survival  of  RBC  precursors,  ineffective  erythropoiesis,  hemolysis  of
mature  RBCs,  and  anemia.  We  estimate  that  the  prevalence  of  thalassemia  is  between  18,000  and  23,000  individuals  in  the  United  States  and  EU5;
approximately 70,000 individuals in Saudi Arabia, United Arab Emirates, Kuwait, Bahrain, Qatar and Oman, also known as the Gulf Council Countries, or
GCC;  and  greater  than  one  million  individuals  worldwide.  In  addition  to  anemia,  patients  with  thalassemia  can  experience  enlarged  spleen,  bone
deformities, iron overload, fatigue, and infection. Current treatment strategies for thalassemia include blood transfusion and bone marrow transplantation,
as  well  as  newer  therapies  such  as  Reblozyl®  (luspatercept-aamt)  for  the  treatment  of  beta-thalassemia  or  Casgevy®  for  the  treatment  of  transfusion-
dependent beta-thalassemia. We believe that the activation of wild-type PKR may increase ATP production and improve red cell fitness and survival of
thalassemic RBCs, by increasing the clearance globin chain aggregates through ATP-dependent proteolytic mechanisms.

Sickle Cell Disease (SCD)

SCD is an inherited blood disorder caused by mutations in hemoglobin that enable the hemoglobin to form long polymeric chains under certain conditions
such  as  low  oxygenation,  or  deoxygenation.  Polymerization  of  this  irregular  hemoglobin  results  in  RBCs  taking  on  a  sickle  shape,  causing  them  to
aggregate and obstruct small blood vessels, restricting blood flow to organs resulting in pain, cell death and organ damage. We estimate that the prevalence
of  SCD  is  between  120,000  and  135,000  individuals  in  the  United  States  and  EU5  and  greater  than  three  million  individuals  worldwide.  RBC
deoxygenation is modulated by several factors, including the levels of 2,3-diphosphoglycerate, or 2,3-DPG, which is found to be elevated in sickle cell
patient  RBCs.  Current  treatment  strategies  focus  on  managing  and  preventing  acute  RBC  sickling,  and  include  hydroxyurea,  L-glutamine  and  blood
transfusions, as well as recently approved therapies such as Adakveo® and Oxbryta®. We believe that activation of wild-type PKR in patients with SCD
may reduce hemoglobin polymerization and the sickling process by at least two mechanisms. Reducing the level of 2,3-DPG in RBCs would increase the
oxygenation  state  of  hemoglobin  to  reduce  sickling,  while  increasing  the  levels  of  ATP  may  improve  RBC  hydration  status  which  may  also  inhibit  the
sickling process.

Lower Risk MDS (LR MDS)

MDS is a heterogeneous group of rare hematological malignancies characterized by dysfunctional hematopoiesis (or formation of blood cells), progressive
cytopenia (or lower-than-normal number of blood cells) and an increased risk of progression to acute myeloid leukemia, or AML. The most common type
of MDS is LR MDS, but many existing therapies and therapies under development focus on high risk MDS. Among patients with LR MDS, which is less
likely  to  progress  to  AML,  the  primary  concern  is  symptomatic  anemia.  We  estimate  that  the  prevalence  of  LR  MDS  in  the  United  States  and  EU5  is
between  75,000  and  80,000  individuals.  We  believe  that  activation  of  wild-type  PK  in  LR  MDS  patients  may  improve  deficient  PK  activity  in  MDS
erythrocytes. Current treatment options for LR MDS often require in-office visits and transfusions, and erythropoiesis stimulating agents and Reblozyl®
are  the  only  approved  therapies  to  treat  anemia  in  a  subset  of  patients.  Despite  approved  therapies  in  subsets  of  patients,  LR  MDS  associated  anemia
remains a disease with a high unmet medical need.

Phenylketonuria (PKU)

PKU, is a rare, genetic disease caused by deficiency of the PAH enzyme. Lack of PAH activity leads to the accumulation of phenylalanine and downstream
neurocognitive deficits. Patients with PKU are therefore often advised to consume a highly restricted diet to in order to minimize phenylalanine intake,
which can further reduce patient quality of life. We estimate that the

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prevalence  of  PKU  in  the  United  States  and  EU5  is  between  35,000  and  40,000  individuals.  To  directly  address  the  underlying  cause  of  PKU,  we  are
developing AG-181, a PAH stabilizer with a goal of reducing phenylalanine levels.

Polycythemia Vera (PV)

PV is a rare blood disorder with no disease-modifying treatments that affects approximately 100,000 individuals in the United States. PV is characterized
by excessive production of RBCs, which leads to increased blood volume and viscosity, and can result in thrombosis, cardiovascular events, and death.
Phlebotomy, which is the procedure of withdrawing blood, is the current standard of care for patients with PV.

PYRUKYND® (mitapivat): First-in-Class PK Activator

We are developing PYRUKYND® for the treatment of PK deficiency and other hemolytic anemias such as thalassemia and SCD. PYRUKYND® is an
orally available small molecule and a potent activator of the wild-type and mutated PK enzymes.

In February 2022, the FDA approved PYRUKYND® for the treatment of hemolytic anemia in adults with PK deficiency in the United States. In November
2022, we received marketing authorization from the European Commission for PYRUKYND® for the treatment of PK deficiency in adult patients in the
EU. In December 2022, we received marketing authorization in Great Britain for PYRUKYND® for the treatment of PK deficiency in adult patients under
the  European  Commission  Decision  Reliance  Procedure.  In  addition,  we  are  currently  evaluating  PYRUKYND®  in  clinical  trials  for  the  treatment  of
thalassemia, SCD, and in pediatric patients with PK deficiency. We have worldwide development and commercial rights to PYRUKYND® and expect to
fund  the  future  development  and  commercialization  costs  related  to  this  program.  PYRUKYND®  has  been  granted  orphan  drug  designation  for  the
treatment of PK deficiency by the FDA and the EMA. Additionally, PYRUKYND® has received orphan drug designation from the FDA for the treatment
of thalassemia and SCD.

We have built our commercial infrastructure to support the commercial launch of PYRUKYND® in adult PK deficiency in the United States. In connection
with our regulatory approvals in the EU and Great Britain, we are currently providing access to PYRUKYND® free of charge for eligible patients in those
jurisdictions  through  a  global  managed  access  program.  We  may  provide  access  to  PYRUKYND®  for  adult  patients  with  PK  deficiency  in  other
jurisdictions upon request through the global managed access program, on either a free of charge or for charge basis. Beyond the global managed access
program, we continue to evaluate options for the commercialization of PYRUKYND® outside of the United States, including through exploring potential
partnership opportunities.

We are evaluating PYRUKYND® in the following clinical trials:

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An  extension  study  evaluating  the  long-term  safety,  tolerability  and  efficacy  of  treatment  with  PYRUKYND®  in  patients  from  ENERGIZE,  our
completed phase 3, double-blind, randomized, placebo-controlled multicenter study pivotal trial of PYRUKYND® in adults with non-transfusion-
dependent alpha- or beta-thalassemia. We announced topline data for ENERGIZE in January 2024. A total of 194 patients were enrolled in the study,
with 130 randomized to PYRUKYND® 100 mg twice-daily, and 64 randomized to matched placebo. 122 patients (93.8%) in the PYRUKYND®
arm and 62 patients (96.9%) in the placebo arm completed the 24-week double-blind period of the study. The study met the primary endpoint of
hemoglobin response, where treatment with PYRUKYND® demonstrated a statistically significant increase in hemoglobin response compared to
placebo, as 42.3% of patients in the PYRUKYND® arm achieved a hemoglobin response, compared to 1.6% of patients in the placebo arm (2-sided
p<0.0001).  Treatment  with  PYRUKYND®  also  demonstrated  statistically  significant  improvements  compared  to  placebo  for  both  key  secondary
endpoints: (i) change from baseline in average Functional Assessment of Chronic Illness Therapy-Fatigue, or FACIT-Fatigue, subscale score from
week 12 to week 24 and (ii) change from baseline in average emoglobin concentration from week 12 to week 24. During the 24-week double-blind
period, four (3.1%) subjects in the PYRUKYND® arm experienced adverse events, or AEs, leading to discontinuation, and there were no AEs in the
placebo arm leading to discontinuation. We plan to provide a more detailed analysis of the data from this trial at an upcoming medical meeting and
we aim to submit an NDA for PYRUKYND® in thalassemia to the FDA by the end of 2024.
ENERGIZE-T, a phase 3, double-blind, randomized, placebo-controlled multicenter study evaluating the efficacy and safety of PYRUKYND® as a
potential  treatment  for  adults  with  transfusion-dependent  alpha-  or  beta-thalassemia,  defined  as  6  to  20  RBC  units  transfused  and  ≤  six-week
transfusion-free period during the 24-week period before randomization. The primary endpoint of the trial is percentage of patients with transfusion
reduction response, defined as a ≥50% reduction in transfused RBC units with a reduction of ≥2 units of transfused RBCs in any consecutive 12-
week  period  through  week  48  compared  with  baseline.  Secondary  endpoints  include  additional  transfusion  reduction  measures  and  percentage  of
participants with transfusion-independence. This trial has completed enrollment and we plan to announce topline data from this trial in mid-2024.

RISE UP, a phase 2/3 study evaluating the efficacy and safety of PYRUKYND® in SCD patients who are 16 years of age or older, have had between
two and 10 sickle cell pain crises in the past 12 months, and have hemoglobin within the range of 5.5 to 10.5 g/dL during screening. We enrolled 79
patients in the phase 2 portion of the trial, with 26 patients in

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the 50 mg twice daily mitapivat arm, 26 patients in the 100 mg twice daily mitapivat arm and 27 patients in the placebo arm. The primary endpoints
of the phase 2 portion of the trial were hemoglobin response, defined as defined as ≥ 1 g/dL increase in average hemoglobin concentration from
week 10 to week 12 compared to baseline, and safety. In June 2023, we announced the phase 2 portion of this trial had achieved its primary endpoint
of  hemoglobin  response  in  patients  in  both  50  mg  and  100  mg  twice  daily  mitapivat  arms.  46.2%  of  patients  (n=12)  in  the  50  mg  twice  daily
mitapivat arm and 50.0% of patients (n=13) in the 100 mg twice daily mitapivat arm achieved a hemoglobin response, compared to 3.7% of patients
(n=1)  in  the  placebo  arm  (2-sided  p=0.0003  and  0.0001,  respectively).  In  December  2023,  we  announced  the  following  additional  results  of  the
phase 2 portion of the trial: (i) the least-squares mean (95% confidence interval) for average change from baseline in hemoglobin levels, from week
10 through week 12, for patients in the 50 mg twice daily mitapivat, 100 mg twice daily mitapivat, and placebo arms, respectively, was 1.11 (0.77,
1.45) g/dL, 1.13 (0.79, 1.47) g/dL, and 0.05 (−0.28, 0.39) g/dL; (ii) we observed improvements in annualized rates of sickle cell pain crises as the
annualized rate of sickle cell pain crises (95% confidence interval) for patients in the 50 mg twice daily and 100 mg twice daily mitapivat arms,
respectively,  was  0.83  (0.34,  1.99)  and  0.51  (0.16,  1.59),  compared  to  1.71  (0.95,  3.08)  for  patients  in  the  placebo  arm;  (iii)  we  observed
improvement in patient-reported fatigue scores in the 50 mg twice daily mitapivat arm compared to the placebo arm, and the least-squares mean
(95% confidence interval) for average changes from baseline in patient-reported fatigue score, from week 10 through week 12, for patients in the 50
mg twice daily mitapivat, 100 mg twice daily mitapivat, and placebo arms, respectively, was −3.80 (−7.16, −0.45), −0.10 (−3.27, 3.08), and −0.17
(−3.40, 3.07). The safety profile for mitapivat observed in the phase 2 portion of the trial was generally consistent with previously reported data in
other studies of SCD and other hemolytic anemias. The most common treatment-emergent AEs in the 50 mg BID, 100 mg BID, and placebo arms,
respectively, were: headache (n=6, 6, 7), arthralgia (n=3, 5, 9), dysmenorrhea (n=0, 3, 0), pain (n=3, 3, 2), pain in extremity (n=1, 3, 6), back pain
(n=4, 2, 3), nausea (n=1, 2, 4), fatigue (n=4, 1, 5), and influenza-like illness (n=1, 1, 3). There were no serious treatment-emergent adverse events, or
TEAEs,  attributed  to  mitapivat  and  there  were  no  adverse  events  leading  to  drug  reduction,  discontinuation,  interruption  or  death  in  either  the
mitapivat or the placebo arms. Of the 79 patients enrolled in the study, 73 continued into the Phase 2 open-label extension period. In October 2023,
we enrolled the first patient in the phase 3 portion of this trial. The phase 3 portion includes a 52-week randomized, placebo-controlled period in
which participants will be randomized in a 2:1 ratio to receive the recommended (100 mg twice daily) PYRUKYND® dose level or the placebo. The
primary endpoints are hemoglobin response, defined as ≥1 g/dL increase in average hemoglobin from baseline to week 52, and annualized rate of
sickle cell pain crises. Participants who complete either the phase 2 or phase 3 portion will have the option to move into a 216-week open-label
extension period to continue to receive PYRUKYND®. We anticipate completing enrollment by the end of 2024 and announcing topline data for
this trial in 2025.

ACTIVATE-kids and ACTIVATE-kidsT, double-blind phase 3 studies evaluating the efficacy and safety of PYRUKYND® as a potential treatment
for PK deficiency in not regularly transfused and regularly transfused patients between one and 18 years old, respectively. The primary endpoint of
ACTIVATE-kids is percentage of patients with hemoglobin response, defined as ≥1.5 g/dL increase in hemoglobin concentration from baseline that
is sustained at two or more scheduled assessments at weeks 12, 16, and 20 during the double-blind period. The primary endpoint of ACTIVATE-
kidsT is transfusion reduction response, defined as ≥33% reduction in total RBC transfusion volume from week 9 through week 32 of the double-
blind period. ACTIVATE-kidsT has completed enrollment and we expect to announce topline data for this trial by the end of 2024. ACTIVATE-kids
is currently enrolling patients, we expect to complete enrollment for this trial by mid-2024, and we anticipate announcing topline data for this trial in
2025.

An  extension  study  evaluating  the  long-term  safety,  tolerability  and  efficacy  of  treatment  with  PYRUKYND®  in  patients  from  ACTIVATE  and
ACTIVATE-T, our completed pivotal trials of PYRUKYND® in not regularly transfused and regularly transfused adult patients with PK deficiency.

An  extension  study  evaluating  the  long-term  safety,  tolerability  and  efficacy  of  treatment  with  PYRUKYND®  in  patients  from  DRIVE  PK,  our
completed global phase 2, first-in-patient, open-label safety and efficacy clinical trial of PYRUKYND® in adult, not regularly transfused patients
with PK deficiency.

An extension study evaluating the safety, tolerability and efficacy of treatment with PYRUKYND® in patients from our completed phase 2, open-
label safety and efficacy clinical trial of PYRUKYND® in adults with non-transfusion-dependent alpha- and beta-thalassemia.

In collaboration with the Company, the National Institutes of Health, or NIH, is evaluating PYRUKYND® in a phase 1 trial in patients with SCD
pursuant to a cooperative research and development agreement. The core trial period has completed, and the long-term extension study is ongoing.
In June 2020, clinical proof of concept was established based on a preliminary analysis of the data from this trial.

In  collaboration  with  the  Company,  University  Medical  Center  Utrecht,  or  UMC  Utrecht,  is  evaluating  PYRUKYND®  in  patients  with  SCD
pursuant to an investigator sponsored trial agreement. The trial has completed enrollment and

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patient follow-up is ongoing, and a 2-year extension study has been initiated for patients who complete the follow-up period.

AG-946: Novel PK Activator

We are developing AG-946, a novel PK activator, for the potential treatment of LR MDS and hemolytic anemias. We are evaluating AG-946 in a phase 1
trial of AG-946 in healthy volunteers and in patients with SCD. We have presented data from the healthy volunteer cohorts, and we have initiated the SCD
patient cohort of this phase 1 trial.

We initiated a phase 2a clinical trial of AG-946 in adults with LR MDS in the third quarter of 2022, and the trial has completed enrollment with 22 patients,
including 12 patients classified as non-transfused and 10 patients classified as low transfusion burden. Patients received 5 mg of AG-946 once daily for up
to  16  weeks.  The  two  primary  endpoints  of  the  trial  were  transfusion  independence  (for  patients  classified  as  low  transfusion  burden),  defined  as
transfusion-free  for  ≥  eight  consecutive  weeks  during  the  16-week  treatment  period,  and  hemoglobin  response,  defined  as  a  ≥  1.5  g/dL  increase  from
baseline in the average hemoglobin concentration measured from week 8 through week 16.

In November 2023, we announced that we achieved clinical proof-of-concept in the phase 2a portion of the trial. We observed that four of the 10 patients
with low transfusion burden achieved the transfusion independence endpoint, and one of the 22 patients achieved the hemoglobin response endpoint in the
16-week treatment period. The safety profile observed was consistent with data reported in the healthy volunteer study of AG-946. 19 patients elected to
enroll in the extension period for up to 156 weeks. We intend to complete a full evaluation of the phase 2a trial results and assess the impact on the phase
2b portion of the protocol in 2024. We anticipate initiating a phase 2b trial of AG-946 in adults with LR MDS in mid-2024.

Other Programs

In addition to the aforementioned development programs, we are developing AG-181, a PAH stabilizer for the potential treatment of PKU, for which we
filed an investigational new drug, or IND, application in December 2023, and plan to initiate a phase 1 study in healthy volunteers in the first half of 2024.
Also, in July 2023, we entered into a license agreement with Alnylam for the development and commercialization of products containing or comprised of
an siRNA preclinical development candidate discovered by Alnylam and targeting the TMPRSS6 gene, and we intend to pursue development of a licensed
product for the potential treatment of patients with PV.

Intellectual Property

Our commercial success depends in part on our ability to obtain and maintain proprietary or intellectual property protection for our product candidates and
our core technologies, including novel biomarker and diagnostic discoveries, and other know-how, to operate without infringing on the proprietary rights of
others  and  to  prevent  others  from  infringing  on  our  proprietary  or  intellectual  property  rights.  Our  policy  is  to  seek  to  protect  our  proprietary  and
intellectual property position by, among other methods, filing United States and foreign patent applications related to our proprietary technology, inventions
and  improvements  that  are  important  to  the  development  and  implementation  of  our  business.  We  also  rely  on  confidential  information,  know-how,  in-
licensing opportunities and continuing technological innovation to develop and maintain our proprietary and intellectual property position. We may also
choose to rely on trade secrets to protect certain aspects of our business that are not suitable or appropriate for patent protection.

We file, or may collaborate with third parties to file, patent applications directed to our key products and product candidates, including PYRUKYND®,
AG-946 and AG-181, in addition to related compounds and potential back-up compounds, in an effort to establish intellectual property positions to protect
these new chemical entities as well as methods of using these compounds in the treatment of diseases, formulations, solid state forms, and manufacturing
processes. We may also seek patent protection for certain biomarkers that may be useful in identifying the appropriate patient population for therapies with
our product candidates.

PK activator program

The  patent  portfolio  for  our  PK  activator  program  contains  issued  patents  and  pending  patent  applications  directed  to  compositions  of  matter  for
PYRUKYND®, as well as to related compounds, various solid state forms of PYRUKYND®, compositions of matter for additional PKR activators, such
as AG-946, as well as various solid state forms, methods of use and methods of manufacture for AG-946 and other novel compounds. As of February 1,
2024, we owned 16 issued United States patents and 401 issued foreign patents, and have pending patent applications in the United States and in various
foreign jurisdictions. The patents that have issued or will issue for PYRUKYND® will have a statutory expiration date of at least 2030 to 2042, and the
patents  that  have  issued  or  will  issue  for  AG-946  will  have  a  statutory  expiration  date  of  at  least  2038  to  2044.  Patent  term  adjustments  or  patent  term
extensions could result in later expiration dates. In some cases, the term of a United States patent can be shortened by the filing of a terminal disclaimer
which  operates  to  reduce  the  term  of  a  patent  to  that  of  an  earlier  expiring  patent.  The  foreign  issued  patents  and  pending  patent  applications  are  in  a
number of jurisdictions, including

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Argentina, Australia, Austria, Belgium, Brazil, Canada, China, the Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Ireland, Italy,
Japan,  Lebanon,  Lithuania,  Mexico,  the  Netherlands,  Norway,  Poland,  Portugal,  Romania,  Russia,  Saudi  Arabia,  Slovakia,  Slovenia,  Spain,  Sweden,
Switzerland,  Taiwan,  Turkey,  and  the  United  Kingdom.  Prosecution  is  a  lengthy  process,  during  which  the  scope  of  the  claims  initially  submitted  for
examination can be significantly narrowed by the time they issue, if they issue at all. We expect this could be the case with respect to some of our pending
patent applications referred to above.

PAH stabilizer program

The  patent  portfolio  for  our  PAH  stabilizer  program  contains  an  issued  patent  and  pending  patent  applications  directed  to  compositions  of  matter  and
methods  of  use  for  AG-181  and  other  novel  PAH  stabilizers.  As  of  February  1,  2024,  we  owned  one  issued  foreign  patent  and  have  pending  patent
applications in the United States and in various foreign jurisdictions. We expect to file national stage patent applications in additional foreign jurisdictions
in accordance with Patent Cooperation Treaty timelines. The patents that have been issued or will issue for our PAH stabilizer program will have a statutory
expiration date of at least 2043. Patent term adjustments or patent term extensions could result in later expiration dates. In some cases, the term of a United
States  patent  can  be  shortened  by  the  filing  of  a  terminal  disclaimer  which  operates  to  reduce  the  term  of  a  patent  to  that  of  an  earlier  expiring  patent.
Prosecution is a lengthy process, during which the scope of the claims initially submitted for examination can be significantly narrowed by the time they
issue, if they issue at all. We expect this could be the case with respect to some of our pending patent applications referred to above.

Patent Term

The term of individual patents depends upon the legal term for patents in the countries in which they are obtained. In most countries, including the United
States, the patent term is 20 years from the earliest filing date of a non-provisional patent application, although term extensions may be available. In the
United States, a patent’s term may be lengthened by patent term adjustment, which compensates a patentee for administrative delays by the United States
Patent and Trademark Office, or USPTO, in examining and granting a patent or may be shortened if a patent is terminally disclaimed over an earlier filed
patent. The term of a patent that covers a drug or biological product may also be eligible for patent term extension when FDA approval is granted, provided
statutory and regulatory requirements are met. The extension of the term of foreign patents varies, in accordance with local law. Although certain of the
patents granted by the regulatory authorities of the EU may expire at specific dates, the terms of patents granted in certain European countries may extend
beyond such EU patent expiration date if we were to obtain a supplementary protection certificate. In addition, because of the extensive time required for
clinical  development  and  regulatory  review  of  a  product  candidate  we  may  develop,  it  is  possible  that,  before  any  of  our  product  candidates  can  be
commercialized, any related patent may expire or remain in force for only a short period following commercialization, thereby reducing any advantage of
any such patent.

In  the  future,  if  and  when  our  product  candidates  receive  approval  by  the  FDA  or  foreign  regulatory  authorities,  we  expect  to  apply  for  patent  term
extensions on issued patents covering those products, depending upon the length of the clinical trials for each product candidate and other factors. There
can  be  no  assurance  that  any  of  our  pending  patent  applications  will  be  issued  or  that  we  will  benefit  from  any  patent  term  extension  or  favorable
adjustment to the term of any of our patents.

Additional Considerations

As with other biotechnology and pharmaceutical companies, our ability to maintain and solidify our proprietary and intellectual property position for our
product,  product  candidates  and  technologies  will  depend  on  our  success  in  obtaining  effective  patent  claims  and  enforcing  those  claims  if  granted.
However, patent applications that we may file or license from third parties may not result in the issuance of patents. We also cannot predict the breadth of
claims  that  may  be  allowed  or  enforced  in  our  patents.  Any  issued  patents  that  we  may  receive  in  the  future  may  be  challenged,  invalidated  or
circumvented. For example, a third party can challenge the patentability of one or more of the claims of an issued patent in a post-grant proceeding before
the USPTO or a foreign patent office such as the European Patent Office, which can result in the loss of certain claims or the loss of an entire patent. In
addition, it is possible that a third party has filed a patent application in the United States, or abroad, that claims the same technology or chemical structures
that  are  claimed  in  our  own  patent  applications  or  patents.  In  such  cases,  we  may  have  to  participate  in  legal  proceedings  or  enter  into  a  licensing
arrangement, which could result in substantial costs to us, even if the eventual outcome is favorable to us. In addition to patent protection, we also rely
upon unpatented confidential information, including confidential technical information, know-how and continuing technological innovation to develop and
maintain our competitive position. We seek to protect our proprietary information, in part, by using confidentiality agreements with our collaborators, third-
party  service  providers,  scientific  advisors,  employees  and  consultants,  and  by  invention  assignment  agreements  with  our  employees.  We  also  have
agreements requiring assignment of inventions with selected consultants, scientific advisors and collaborators. The confidentiality agreements are designed
to protect our proprietary information and, in the case of agreements or clauses requiring invention assignment, to grant us ownership of technologies that
are developed through a relationship with a third party. Nevertheless, confidential information and know-how can be difficult to protect. In particular, we
anticipate that at least some of our technical information and know-how will, over time, become

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known  within  the  industry  through  independent  development,  the  publication  of  journal  articles,  and  the  movement  of  personnel  skilled  in  the  art  from
academic to industry scientific positions.

Competition

The  pharmaceutical  and  biotechnology  industries  are  characterized  by  rapidly  advancing  technologies,  intense  competition  and  a  strong  emphasis  on
proprietary products. While we believe that our technology, development experience and scientific knowledge provide us with competitive advantages, we
face potential competition from many different sources, including major pharmaceutical, specialty pharmaceutical and biotechnology companies, academic
institutions  and  governmental  agencies,  and  public  and  private  research  institutions.  PYRUKYND®  and  any  product  candidates  that  we  successfully
develop and commercialize will compete with existing therapies and new therapies that may become available in the future.

We compete in pharmaceutical, biotechnology and other related markets that address rare diseases, particularly hemolytic anemias, PKU and PV. There are
other companies working to develop rare disease therapies, including divisions of large pharmaceutical companies and biotechnology companies of various
sizes.

Our competitors include but are not limited to: Bristol-Myers Squibb Company, or BMS; BioMarin Pharmaceutical, Inc., or BioMarin; bluebird bio, Inc., or
bluebird;  Merck  &  Co.,  Inc.,  or  Merck;  Novartis  International  AG,  or  Novartis;  Novo  Nordisk  A/S,  or  Novo;  Pfizer,  Inc.,  or  Pfizer;  Rocket
Pharmaceuticals, Inc., or Rocket Pharma; Vertex Pharmaceuticals Incorporated, or Vertex; CRISPR Therapeutics AG, or CRISPR; Emmaus Life Sciences,
Inc., or Emmaus; Fulcrum Therapeutics, Inc., or Fulcrum; Geron Corporation, or Geron; Keros Therapeutics, Inc., or Keros; PTC Therapeutics, Inc., or
PTC; Jnana Therapeutics Inc., or Jnana; Homology Medicines Inc., or Homology; Silence Therapeutics plc, or Silence; Protagonist Therapeutics, Inc., or
Protagonist; Ionis Pharmaceuticals, Inc., or Ionis; PharmaEssentia USA Corporation, or PharmaEssentia; and Incyte Corporation, or Incyte.

The  most  common  methods  for  treating  patients  with  rare  diseases  include  dietary  restriction,  dietary  supplementation  or  replacement,  treatment  of
symptoms  and  complications,  gene  therapy,  blood  transfusions,  phlebotomies,  stem  cell  transplant  and  ERTs  and  there  are  several  marketed  therapies
available for treating patients with hemolytic anemias, PKU and PV. For example, recently approved treatments for thalassemia, SCD, LR MDS, PKU and
PV include Reblozyl® from Merck/BMS (formerly Acceleron/BMS); Revlimid® from BMS; Zynteglo® and Lyfgenia® from bluebird; Adakveo® from
Novartis;  Oxbryta®  from  Pfizer;  Casgevy®  from  Vertex/CRISPR;  Kuvan®  and  Palynziq®  from  BioMarin;  Endari®  from  Emmaus;  Besremi®  from
PharmaEssentia;  and  Jakafi®  from  Incyte.  While  our  product  and  product  candidates  may  compete  with  existing  medicines  and  other  therapies,  to  the
extent they are ultimately used in combination with or as an adjunct to these therapies, our product or product candidates may not be competitive with
them.  In  addition  to  currently  marketed  therapies,  there  are  also  several  products  that  are  either  small  molecules,  biologics,  ERTs  or  gene  therapies  in
various  stages  of  development  to  treat  hemolytic  anemias,  PKU  and  PV.  For  example,  Rocket  Pharma  is  conducting  a  clinical  trial  of  a  gene  therapy
targeting PK deficiency; Novo is developing etavopivat (a PKR activator) for the treatment of hemolytic anemias, including alpha and beta thalassemia,
SCD and MDS; Pfizer is developing inclacumab and GBT-601 for the treatment of SCD; Geron is developing imetelstat for the treatment of LR MDS (for
which they have a Prescription Drug User Fee Act, or PDUFA, goal date of June 16, 2024 for their new drug application); Fulcrum is developing pociredir
(FTX-6058) in SCD; Keros is developing KER-050 for the treatment of anemia in LR MDS; a number of companies, including PTC, Jnana and Homology
are developing therapies to treat PKU; and a number of companies, including Silence, Protagonist and Ionis are developing therapies to treat PV. These
products may provide efficacy, safety, convenience and other benefits not provided by current marketed therapies or the current standards of care. As a
result, they may provide competition for any of our product or product candidates for which we obtain market approval.

Many of our competitors may have significantly greater financial resources and expertise in research and development, manufacturing, preclinical testing,
conducting  clinical  trials,  obtaining  regulatory  approvals  and  globally  marketing  approved  medicines  than  we  do.  Mergers  and  acquisitions  in  the
pharmaceutical, biotechnology and diagnostic industries may result in even more resources being concentrated among a smaller number of our competitors.
These competitors also compete with us in recruiting and retaining qualified scientific and management personnel, and establishing clinical trial sites and
patient  registration  for  clinical  trials,  as  well  as  in  acquiring  or  in-licensing  technologies  complementary  to,  or  necessary  for,  our  programs.  Smaller  or
early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large and established companies.

The key competitive factors affecting the success of PYRUKYND® and any of our product candidates that we develop, if approved, are likely to be their
efficacy, safety, convenience, price, the effectiveness of companion diagnostics in guiding the use of related therapeutics where appropriate, the level of
generic competition and the availability of reimbursement from government and other third-party payors.

Our commercial opportunity could be reduced or eliminated if our competitors develop and commercialize medicines that are safer, more effective, have
fewer or less severe side effects, are more convenient or are less expensive than any medicines that we may develop. Our competitors also may obtain FDA
or other regulatory approval for their medicines more rapidly than we

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may  obtain  approval  for  ours,  which  could  result  in  our  competitors  establishing  a  strong  market  position  before  we  are  able  to  enter  the  market.  In
addition, our ability to compete may be affected in many cases by insurers or other third-party payors seeking to encourage the use of generic or other
branded  medicines.  There  are  generic  medicines  currently  on  the  market  for  indications  that  we  are  pursuing,  and  additional  medicines  are  expected  to
become available on a generic basis over the coming years. We expect that PYRUKYND® and any of our product candidates that may receive marketing
approval in the future will be priced at a significant premium over competitive generic medicines.

Manufacturing and Supply Chain

PYRUKYND®, AG-946, and AG-181 are organic compounds of low molecular weight, generally called small molecules. Our siRNA program targeting
the TMPRSS6 gene is an oligonucleotide intended for use as a sterile parenteral administration. Each can be manufactured in reliable and reproducible
synthetic processes from readily available starting materials. The chemistry is amenable to scale-up and does not require unusual equipment in the
manufacturing process. We expect to continue to develop product candidates that can be produced cost-effectively at contract manufacturing facilities.

We  do  not  own  or  operate,  and  currently  have  no  plans  to  establish,  any  manufacturing  or  supply  chain  related  facilities.  We  currently,  and  expect  to
continue to, rely on third parties for the manufacture and supply of our clinical and preclinical product candidates, as well as for commercial manufacture
of PYRUKYND® and any product for which we may receive marketing approval in the future. We conduct extensive prequalification programs to ensure
the compliance, quality and reliability of third-party manufacturing and supply operations.

To  date,  we  have  obtained  materials  for  PYRUKYND®,  AG-946,  AG-181  and  our  siRNA  program  for  our  ongoing  and  planned  clinical  testing  and
ongoing  preclinical  testing  from  third-party  manufacturers.  We  have  long-term  commercial  manufacture  and  supply  agreements  in  place  for
PYRUKYND®, and we obtain our supplies from these manufacturers on a purchase order basis.

Due to the volatility of the supply networks globally, we have gained regulatory approval for redundant supply of raw materials and active pharmaceutical
ingredient, or API, for PYRUKYND®, and have an ongoing program to ensure this risk mitigation remains effective, including establishing safety stocks.
We do not currently have arrangements in place for redundant supply for drug product, but maintain a broad safety stock program. As we have done for
PYRUKYND®, we intend to identify and qualify additional manufacturing and supply related services for our other product candidates.

Government Regulation and Product Approvals

Government authorities in the United States, at the federal, state and local level, and in other countries and jurisdictions, including the EU, extensively
regulate,  among  other  things,  the  research,  development,  testing,  manufacture,  pricing,  quality  control,  approval,  packaging,  storage,  recordkeeping,
labeling,  advertising,  promotion,  distribution,  marketing,  post-approval  monitoring  and  reporting,  and  import  and  export  of  biopharmaceutical  products.
The  processes  for  obtaining  marketing  approvals  in  the  United  States  and  in  foreign  countries  and  jurisdictions,  along  with  compliance  with  applicable
statutes and regulations and other regulatory authorities, require the expenditure of substantial time and financial resources.

Approval and Regulation of Drugs in the United States

In the United States, drug products are regulated under the Federal Food, Drug and Cosmetic Act, or FDCA, and applicable implementing regulations and
guidance. A company, institution, or organization responsible for initiating and managing a clinical development program for such products, and for their
regulatory approval, is typically referred to as a sponsor.

A sponsor seeking approval to market and distribute a new drug in the United States generally must satisfactorily complete each of the following steps
before the product candidate will be approved by the FDA:

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•

•

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•

preclinical testing including laboratory tests, animal studies and formulation studies which must be performed in accordance with the FDA’s good
laboratory practice, or GLP, regulations and standards;

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

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

performance of adequate and well-controlled human clinical trials to establish the safety and efficacy of the product candidate for each proposed
indication, in accordance with current good clinical practices, or GCP;

preparation and submission to the FDA of an NDA for a drug product which includes not only the results of the clinical trials, but also, detailed
information  on  the  chemistry,  manufacture  and  quality  controls  for  the  product  candidate  and  proposed  labeling  for  one  or  more  proposed
indication(s);

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•

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review of the product candidate by an FDA advisory committee, where appropriate or if applicable;

satisfactory completion of FDA inspection of the manufacturing facility or facilities, including those of third parties, at which the product candidate
or components thereof are manufactured to assess compliance with current good manufacturing practices, or cGMP, requirements and to assure that
the facilities, methods and controls are adequate to preserve the product’s identity, strength, quality and purity;

satisfactory completion of any FDA audits of the non-clinical and clinical trial sites to assure compliance with GCP and the integrity of clinical data
in support of the NDA;

payment of user fees and securing FDA approval of the NDA to allow marketing of the new drug product; and

compliance  with  any  post-approval  requirements,  including  the  potential  requirement  to  implement  risk  evaluation  and  mitigation  strategies,  or
REMS, and the potential requirement to conduct any post-approval studies required by the FDA.

Preclinical Studies

Before a sponsor begins testing a product candidate with potential therapeutic value in humans, the product candidate enters the preclinical testing stage.
Preclinical  tests  include  laboratory  evaluations  of  product  chemistry,  formulation  and  stability  and  other  studies  to  evaluate,  among  other  things,  the
toxicity of the product candidate. The conduct of the preclinical tests and formulation of the compounds for testing must comply with federal regulations
and  requirements,  including  GLP  regulations  and  standards,  and  the  United  States  Department  of  Agriculture’s  Animal  Welfare  Act,  if  applicable.  The
results of the preclinical tests, together with manufacturing information and analytical data, are submitted to the FDA as part of an IND and are typically
referred to as IND-enabling studies. Some long-term preclinical testing, such as animal tests of reproductive adverse events and carcinogenicity, and long-
term toxicity studies, may continue after the IND is submitted.

The IND and IRB Processes

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.  Such  authorization  must  be  secured  prior  to
interstate shipment and administration of any product candidate that is not the subject of an approved NDA. In addition to reviewing an IND to assure the
safety and rights of patients, the FDA also focuses on the quality of the investigation and whether it will be adequate to permit an evaluation of the drug's
safety and efficacy. In support of a request for an IND, sponsors must submit a protocol for each clinical trial and any subsequent protocol amendments
must be submitted to the FDA as part of the IND. The FDA requires a 30-day waiting period after the filing of each IND before clinical trials may begin.
This waiting period is designed to allow the FDA to review the IND to determine whether human research subjects will be exposed to unreasonable health
risks. At any time during this 30-day period, or thereafter, the FDA may raise concerns or questions about the conduct of the trials as outlined in the IND
and impose a clinical or partial clinical hold. In this case, the IND sponsor and the FDA must resolve any outstanding concerns before clinical trials can
begin.

Following commencement of a clinical trial under an IND, the FDA may also place a clinical or partial clinical hold on that trial. A clinical hold is an order
issued by the FDA to the sponsor to delay a proposed clinical investigation or to suspend an ongoing investigation. A partial clinical hold is a delay or
suspension of only part of the clinical work requested under the IND. For example, a specific protocol or part of a protocol is not allowed to proceed, while
other protocols may do so. No more than 30 days after imposition of a clinical hold or partial clinical hold, the FDA will provide the sponsor a written
explanation of the basis for the hold. Following issuance of a clinical 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.

A sponsor may choose, but is not required, to conduct a foreign clinical study under an IND. When a foreign clinical study is conducted under an IND, all
FDA IND requirements must be met unless waived. When a foreign clinical study is not conducted under an IND, the sponsor must ensure that the study
complies with certain regulatory requirements, including GCP requirements, of the FDA to use the study as support for an IND or application for marketing
approval. The GCP requirements encompass both ethical and data integrity standards for clinical studies. The FDA’s regulations are intended to help ensure
the protection of human subjects enrolled in non-IND foreign clinical studies, as well as the quality and integrity of the resulting data. They further help
ensure that non-IND foreign studies are conducted in a manner comparable to that required for IND studies.

In addition to the foregoing IND requirements, an IRB representing each institution participating in the clinical trial must review and approve the plan for
any clinical trial before it commences at that institution, and the IRB must conduct continuing review and reapprove the study at least annually. The IRB
must review and approve, among other things, the study protocol and informed consent information to be provided to study subjects. An IRB must operate
in compliance with FDA regulations. An IRB can suspend or terminate approval of a clinical trial at its institution, or an institution it represents, if the
clinical trial is not

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being conducted in accordance with the IRB’s requirements or if the product candidate has been associated with unexpected serious harm to patients.

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 access that only the
group maintains to available data from the study. Suspension or termination of development during any phase of clinical trials can occur if it is determined
that  the  participants  or  patients  are  being  exposed  to  an  unacceptable  health  risk.  Other  reasons  for  suspension  or  termination  may  be  made  based  on
evolving business objectives and/or competitive climate.

Reporting Clinical Trial Results

Under the Public Health Service Act, sponsors of certain clinical trials of certain FDA-regulated products, including prescription drugs and biologics, are
required to register and disclose certain clinical trial information on a public registry (clinicaltrials.gov) maintained by the 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. With the issuance of pre-notices for voluntary corrective action and several notices of non-compliance during the past two
years, the FDA has signaled the government’s willingness to enforce these requirements against non-compliant clinical trial sponsors. While these notices
of non-compliance did not result in civil monetary penalties, the failure to submit clinical trial information to clinicaltrials.gov 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.  Violations  may  also  result  in
injunctions and/or criminal prosecution or disqualification from federal grants.

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.

While  there  is  no  obligation  to  make  investigational  products  available  for  expanded  access,  sponsors  are  required  to  make  policies  for  evaluating  and
responding to requests for expanded access publicly available upon the earlier of initiation of a Phase 2 or Phase 3 clinical trial, or 15 days after the drug or
biologic receives designation as a breakthrough therapy, fast track product, or regenerative medicine advanced therapy.

In addition, the Right to Try Act, 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 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.

Human Clinical Trials in Support of an NDA

Clinical  trials  involve  the  administration  of  the  investigational  product  candidate  to  human  subjects  under  the  supervision  of  a  qualified  investigator  in
accordance with GCP requirements which include, among other things, the requirement that all research subjects provide their informed consent in writing
before their participation in any clinical trial. Clinical trials are conducted under written clinical trial protocols detailing, among other things, the objectives
of the study, inclusion and exclusion criteria, the parameters to be used in monitoring safety and the effectiveness criteria to be evaluated.

Human clinical trials are typically conducted in three sequential phases, but the phases may overlap or be combined.

Phase 1  clinical  trials  are  initially  conducted  in  a  limited  population  to  test  the  product  candidate  for  safety,  including  AEs,  dose  tolerance,  absorption,
metabolism,  distribution,  excretion  and  pharmacodynamics  in  healthy  humans  or  in  patients.  During  Phase  1  clinical  trials,  information  about  the
investigational  drug  product’s  pharmacokinetics  and  pharmacological  effects  may  be  obtained  to  permit  the  design  of  well-controlled  and  scientifically
valid Phase 2 clinical trials.

Phase 2 clinical trials are generally conducted to identify possible AEs and safety risks, evaluate the efficacy of the product candidate for specific targeted
indications, and determine dose tolerance and optimal dosage. Multiple Phase 2 clinical trials may be conducted by the sponsor to obtain information prior
to beginning larger and more costly Phase 3 clinical trials. Phase 2 clinical trials are well controlled, closely monitored and conducted in a limited patient
population.

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Phase 3  clinical  trials  proceed  if  the  Phase  2  clinical  trials  demonstrate  that  a  dose  range  of  the  product  candidate  is  potentially  effective  and  has  an
acceptable  safety  profile.  Phase  3  clinical  trials  are  undertaken  within  an  expanded  patient  population  to  further  evaluate  dosage,  provide  substantial
evidence of clinical efficacy, and further test for safety in an expanded and diverse patient population at multiple, geographically dispersed clinical trial
sites. The FDA may require more than one Phase 3 clinical trial to support approval of a product candidate. A well-controlled, statistically robust Phase 3
clinical  trial  may  be  designed  to  deliver  the  data  that  regulatory  authorities  will  use  to  decide  whether  or  not  to  approve,  and,  if  approved,  how  to
appropriately label a drug; such Phase 3 clinical trials are referred to as “pivotal.” A Phase 2 clinical trial can be a “pivotal” trial if the design provides a
well-controlled and reliable assessment of clinical benefit, particularly in an area of unmet medical need. A company’s designation of the phase of a trial is
not necessarily indicative that the trial will be sufficient to satisfy the FDA requirements of that phase.

In December 2022, with the passage of the Food and Drug Omnibus Reform Act, or FDORA, Congress required sponsors to develop and submit a diversity
action  plan  for  each  Phase  3  clinical  trial  or  any  other  “pivotal  study”  of  a  new  drug  or  biological  product.  These  plans  are  meant  to  encourage  the
enrollment of more diverse patient populations in late-stage clinical trials of FDA-regulated products. Specifically, action plans must include the sponsor’s
goals  for  enrollment,  the  underlying  rationale  for  those  goals,  and  an  explanation  of  how  the  sponsor  intends  to  meet  them.  In  addition  to  these
requirements, the legislation directs the FDA to issue new guidance on diversity action plans.

In June 2023, the FDA issued draft guidance with updated recommendations for GCPs aimed at modernizing the design and conduct of clinical trials. The
updates are intended to help pave the way for more efficient clinical trials to facilitate the development of medical products. The draft guidance is adopted
from  the  International  Council  for  Harmonisation’s  recently  updated  E6(R3)  draft  guideline  that  was  developed  to  enable  the  incorporation  of  rapidly
developing  technological  and  methodological  innovations  into  the  clinical  trial  enterprise.  In  addition,  the  FDA  issued  draft  guidance  outlining
recommendations for the implementation of decentralized clinical trials.

In  some  cases,  the  FDA  may  approve  an  NDA  for  a  product  candidate  but  require  the  sponsor  to  conduct  additional  clinical  trials  to  further  assess  the
product candidate’s safety and effectiveness after approval. Such post-approval trials are typically referred to as Phase 4 clinical trials. These trials are used
to gain additional experience from the treatment of a larger number of patients in the intended treatment group and to further document a clinical benefit in
the case of drugs approved under accelerated approval regulations. Failure to exhibit due diligence with regard to conducting Phase 4 clinical trials could
result in withdrawal of approval for products.

Progress reports detailing the results of clinical trials must be submitted at least annually to the FDA and more frequently if serious AEs occur. In addition,
IND safety reports must be submitted to the FDA for any of the following: serious and unexpected suspected adverse reactions; findings from other studies
or animal or in vitro testing that suggest a significant risk in humans exposed to the product; and any clinically important increase in the case of a serious
suspected  adverse  reaction  over  that  listed  in  the  protocol  or  investigator  brochure.  Phase  1,  Phase  2  and  Phase  3  clinical  trials  may  not  be  completed
successfully  within  any  specified  period,  or  at  all.  The  FDA  will  typically  inspect  one  or  more  clinical  sites  to  assure  compliance  with  GCP  and  the
integrity of the clinical data submitted.

Interactions with the FDA During the Clinical Development Program

Following the clearance of an IND and the commencement of clinical trials, a sponsor will continue to have interactions with the FDA and the sponsor may
meet with the FDA at certain points in the clinical development program. Specifically, sponsors may meet with the FDA prior to the submission of an IND,
or a pre-IND meeting, at the end of Phase 2 clinical trial, or a EOP2 meeting, and before an NDA is submitted, or a pre-NDA meeting. Meetings at other
times may also be requested. These meetings provide an opportunity for the sponsor to share information about the data gathered to date with the FDA and
for the FDA to provide advice on the next phase of development.

There  are  five  types  of  meetings  that  occur  between  sponsors  and  the  FDA.  Type  A  meetings  are  those  necessary  for  an  otherwise  stalled  product
development program to proceed or to address an important safety issue. Type B meetings include pre-IND and pre-NDA meetings as well as end of phase
meetings, such as EOP2 meetings. A Type C meeting is any meeting other than a Type A or Type B meeting regarding the development and review of a
product,  including,  for  example,  meetings  to  facilitate  early  consultations  on  the  use  of  a  biomarker  as  a  new  surrogate  endpoint  that  has  never  been
previously used as the primary basis for product approval in the proposed context of use. A Type D meeting is focused on a narrow set of issues (typically
limited  to  no  more  than  two  focused  topics)  and  should  not  require  input  from  more  than  three  disciplines  or  divisions.  Finally,  INitial  Targeted
Engagement for Regulatory Advice on CBER producTs, or INTERACT, meetings are intended for novel products and development programs that present
unique challenges in the early development of an investigational product.

Such  meetings  may  be  conducted  in  person,  via  teleconference/videoconference,  or  written  response  only  with  minutes  reflecting  the  questions  that  the
sponsor posed to the FDA and the FDA’s responses. The FDA has indicated that its responses, as conveyed in meeting minutes and advice letters, only
constitute mere recommendations and/or advice made to a sponsor and,

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as such, sponsors are not bound by such recommendations and/or advice. Nonetheless, from a practical perspective, a sponsor’s failure to follow the FDA’s
recommendations for design of a clinical program may put the program at significant risk of failure. In September 2023, the FDA issued draft guidance
outlining the terms of such meetings in more detail.

Review and Approval of an NDA

To  obtain  approval  to  market  a  drug  product  in  the  United  States,  a  marketing  application  must  be  submitted  to  the  FDA  that  provides  sufficient  data
establishing the safety and efficacy of the proposed drug product for its intended indication. The application must include all relevant data available from
pertinent preclinical and clinical trials, including negative or ambiguous results as well as positive findings, together with detailed information relating to
the  product’s  chemistry,  manufacturing,  controls  and  proposed  labeling,  among  other  things.  Data  can  come  from  company-sponsored  clinical  trials
intended to test the safety and effectiveness of a product use, or from alternative sources, including studies initiated by investigators. To support marketing
approval, the data submitted must be sufficient in quality and quantity to establish the safety and efficacy of the drug product to the satisfaction of the FDA.

The NDA is a vehicle through which sponsors formally propose that the FDA approve a new product for marketing and sale in the United States for one or
more indications. Every new drug product candidate must be the subject of an approved NDA before it may be commercialized in the United States. Under
federal  law,  the  submission  of  most  NDAs  is  subject  to  an  application  user  fee,  which  for  federal  fiscal  year  2024  is  approximately  $4.05  million.  The
sponsor of an approved NDA is also subject to an annual program fee, which for fiscal year 2024 is $416,734 per product. Certain exceptions and waivers
are  available  for  some  of  these  fees,  such  as  an  exception  from  the  application  fee  for  products  with  orphan  designation  and  a  waiver  for  certain  small
businesses.

Following  submission  of  an  NDA,  the  FDA  conducts  a  preliminary  review  of  the  application  generally  within  60  calendar  days  of  its  receipt  and  must
inform the sponsor at that time or before whether the application is sufficiently complete to permit substantive review. The FDA may request additional
information rather than accept the application for filing. In this event, the application must be resubmitted with the additional information. The resubmitted
application is also subject to review before the FDA accepts it for filing. Once the submission is accepted for filing, the FDA begins an in-depth substantive
review.  Under  the  goals  and  policies  agreed  to  by  the  FDA  under  the  PDUFA,  applications  seeking  approval  of  New  Molecular  Entities,  or  NMEs,  are
meant to be reviewed within ten months from the date on which the FDA accepts the application for filing. The review process and the PDUFA goal date
may be extended by the FDA for three additional months to consider new information or clarification provided by the sponsor to address an outstanding
deficiency identified by the FDA following the original submission.

Before approving an application, the FDA typically will inspect the facility or facilities where the product is or will be manufactured. These pre-approval
inspections may cover all facilities associated with an NDA submission, including component manufacturing, finished product manufacturing and control
testing  laboratories.  The  FDA  will  not  approve  an  application  unless  it  determines  that  the  manufacturing  processes  and  facilities  comply  with  cGMP
requirements and are adequate to assure consistent production of the product within required specifications. Under the FDA Reauthorization Act of 2017,
the  FDA  must  implement  a  protocol  to  expedite  review  of  responses  to  inspection  reports  pertaining  to  certain  applications,  including  applications  for
products in shortage or those for which approval is dependent on remediation of conditions identified in the inspection report.

In addition, as a condition of approval, the FDA may require a sponsor to develop a REMS. REMS use risk minimization strategies beyond the professional
labeling to ensure that the benefits of the product outweigh the potential risks. REMS could include medication guides, communication plans for health
care professionals, and elements to assure safe use, including special training or certification for prescribing or dispensing, dispensing only under certain
circumstances,  special  monitoring  and  the  use  of  patent  registries.  To  determine  whether  a  REMS  is  needed,  the  FDA  will  consider  the  size  of  the
population likely to use the product, seriousness of the disease, expected benefit of the product, expected duration of treatment, seriousness of known or
potential adverse events and whether the product is an NME.

The FDA may refer an application for a novel product which presents difficult questions of safety or efficacy to an advisory committee or explain why such
referral was not made. Typically, an advisory committee is a panel of independent experts, including clinicians and other scientific experts, that reviews,
evaluates  and  provides  a  recommendation  as  to  whether  the  application  should  be  approved  and  under  what  conditions.  The  FDA  is  not  bound  by  the
recommendations of an advisory committee, but it considers such recommendations when making decisions.

Fast Track, Breakthrough Therapy, Priority Review and Regenerative Advanced Therapy Designations

The  FDA  is  authorized  to  designate  certain  products  for  expedited  review  if  they  are  intended  to  address  an  unmet  medical  need  in  the  treatment  of  a
serious  or  life-threatening  disease  or  condition.  These  programs  are  called  Fast  Track  designation,  Breakthrough  Therapy  designation,  priority  review
designation and regenerative advanced therapy designation.

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Fast Track Designation. The FDA may designate a product for Fast Track review if it is intended, either alone or in combination with one or more
other  products,  for  the  treatment  of  a  serious  or  life-threatening  disease  or  condition,  and  it  demonstrates  the  potential  to  address  unmet  medical
needs  for  such  a  disease  or  condition.  For  Fast  Track  products,  sponsors  may  have  greater  interactions  with  the  FDA  and  the  FDA  may  initiate
review of sections of a Fast Track product’s application before the application is complete. This rolling review process may be available if the FDA
determines, after preliminary evaluation of clinical data submitted by the sponsor, that a Fast Track product may be effective. However, the FDA’s
time period goal for reviewing a Fast Track application does not begin until the last section of the application is submitted. In addition, the Fast
Track designation may be withdrawn by the FDA if the FDA believes that the designation is no longer supported by data emerging in the clinical
trial process.

Breakthrough Therapy Designation. A product may be designated as a Breakthrough Therapy if it is intended, either alone or in combination with
one or more other products, to treat a serious or life-threatening disease or condition and preliminary clinical evidence indicates that the product may
demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints. The FDA may take certain actions with
respect to Breakthrough Therapies, including: holding meetings with the sponsor throughout the development process; providing timely advice to
the product sponsor regarding development and approval; involving more senior staff in the review process; assigning a cross-disciplinary project
lead for the review team; and taking other steps to design the clinical trials in an efficient manner.

Priority Review.  The  FDA  may  designate  a  product  for  priority  review  if  it  is  a  product  that  treats  a  serious  condition  and,  if  approved,  would
provide  a  significant  improvement  in  safety  or  effectiveness  when  compared  with  other  available  therapies.  Significant  improvement  may  be
illustrated by evidence of increased effectiveness in the treatment of a condition, elimination or substantial reduction of a treatment-limiting product
reaction,  documented  enhancement  of  patient  compliance  that  may  lead  to  improvement  in  serious  outcomes,  and  evidence  of  safety  and
effectiveness  in  a  new  subpopulation.  A  priority  designation  is  intended  to  direct  overall  attention  and  resources  to  the  evaluation  of  such
applications, and to shorten the FDA’s goal for review of a marketing application from ten months to six months.

Regenerative Advanced Therapy Designation. A product is eligible for regenerative advanced therapies designation if it is a regenerative medicine
therapy that is intended to treat, modify, reverse or cure a serious or life-threatening disease or condition, and preliminary clinical evidence indicates
that the product has the potential to address unmet medical needs for such disease or condition. The benefits of a regenerative advanced therapy
designation  include  early  interactions  with  FDA  to  expedite  development  and  review,  benefits  available  to  breakthrough  therapies,  potential
eligibility for priority review and accelerated approval based on surrogate or intermediate endpoints.

Accelerated Approval Pathway

Drug or biologic products studied for their safety and effectiveness in treating serious or life-threatening illnesses and that provide meaningful therapeutic
benefit over existing treatments may receive accelerated approval. Accelerated approval means that a product candidate may be approved on the basis of
adequate and well controlled clinical trials establishing that the product candidate has an effect on a surrogate endpoint that is reasonably likely to predict a
clinical benefit, or on the basis of an effect on a clinical endpoint other than survival or irreversible morbidity or mortality or other clinical benefit, taking
into account the severity, rarity and prevalence of the condition and the availability or lack of alternative treatments. As a condition of approval, the FDA
may require that a sponsor of a drug or biologic product candidate receiving accelerated approval perform adequate and well controlled post-marketing
clinical trials. In addition, the FDA currently requires as a condition for accelerated approval pre-approval of promotional materials.

With  the  passage  of  FDORA  in  December  2022,  Congress  modified  certain  provisions  governing  accelerated  approval  of  drug  and  biologic  products.
Specifically, the new legislation authorized the FDA to: (i) require a sponsor to have its confirmatory clinical trial underway before accelerated approval is
awarded,  (ii)  require  a  sponsor  of  a  product  granted  accelerated  approval  to  submit  progress  reports  on  its  post-approval  studies  to  the  FDA  every  six
months (until the study is completed); and (iii) use expedited procedures to withdraw accelerated approval of an NDA or biologics license application after
the confirmatory trial fails to verify the product’s clinical benefit. Further, FDORA requires the FDA to publish on its website the rationale for why a post-
approval study is not appropriate or necessary, whenever it decides not to require such a study upon granting accelerated approval. In March 2023, the FDA
issued draft guidance that outlines its current thinking and approach to accelerated approval.

The FDA’s Decision on an NDA

Based on its evaluation of the application and accompanying information, including the results of the inspection of the manufacturing facilities, the FDA
may issue an approval letter or a complete response letter. An approval letter authorizes commercial marketing of the product with specific prescribing
information for the approved indications. A complete response letter generally indicates that the review cycle is complete and outlines the deficiencies in
the submission, and may require substantial additional testing or information in order for the FDA to reconsider the application. A sponsor has one year to
respond to the deficiencies identified in the complete response letter. The FDA has committed to reviewing such resubmissions

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in two or six months depending on the type of information included. Even with submission of this additional information, the FDA ultimately may decide
that the application does not satisfy the regulatory criteria for approval.

If the FDA approves a new product, it may limit the approved indications for use of the product. The FDA may also require contraindications, warnings or
precautions  be  included  in  the  product  labeling,  require  post-approval  trials,  require  testing  and  surveillance  programs  to  monitor  the  product  after
commercialization, or impose other conditions, including distribution and use restrictions or other risk management mechanisms, including REMS, to help
ensure that the benefits of the product outweigh the potential risks. The FDA may prevent or limit further marketing of a product based on the results of
post-marketing  trials  or  surveillance  programs.  After  approval,  many  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.

Under the Ensuring Innovation Act, signed into law in 2021, the FDA must publish action packages summarizing its decisions to approve new drugs within
30 days of approval of such drugs.

Post-Approval Regulation

If regulatory approval for marketing of a product or new indication for an existing product is obtained, the sponsor will be required to comply with all
regular post-approval regulatory requirements as well as any post-approval requirements that the FDA may have imposed as part of the approval process.
The sponsor will be required to report, among other things, certain adverse reactions and manufacturing problems to the FDA, provide updated safety and
efficacy  information  and  comply  with  requirements  concerning  advertising  and  promotional  labeling  requirements.  Manufacturers  and  certain  of  their
subcontractors are required to register their establishments with the FDA and certain state agencies, and are subject to periodic unannounced inspections by
the FDA and certain state agencies for compliance with ongoing regulatory requirements, including cGMP regulations. Accordingly, the sponsor and its
third-party  manufacturers  must  continue  to  expend  time,  money  and  effort  in  the  areas  of  production  and  quality  control  to  maintain  compliance  with
cGMP and other regulatory requirements.

A product may also be subject to official lot release, meaning that the manufacturer is required to perform certain tests on each lot of the product before it is
released for distribution. If the product is subject to official release, the manufacturer must submit samples of each lot, together with a release protocol
showing a summary of the history of manufacture of the lot and the results of all the manufacturer’s tests performed on the lot, to the FDA. The FDA may
in addition perform certain confirmatory tests on lots of some products before releasing the lots for distribution. Finally, the FDA will conduct laboratory
research related to the safety, purity, potency and effectiveness of pharmaceutical products.

Once an approval is granted, the FDA may withdraw the approval if compliance with regulatory requirements is not maintained or if problems occur after
the  product  reaches  the  market.  Later  discovery  of  previously  unknown  problems  with  a  product,  including  adverse  events  of  unanticipated  severity  or
frequency, with manufacturing processes, or failure to comply with regulatory requirements, may result in: revisions to the approved labeling to add new
safety  information;  imposition  of  post-market  studies  or  clinical  trials  to  assess  safety  risks;  or  imposition  of  distribution  or  other  restrictions  under  a
REMS program. Other potential consequences include, among other things:

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•

•

•

•

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

fines, warning letters or holds on post-approval clinical trials;

refusal  of  the  FDA  to  approve  pending  applications  or  supplements  to  approved  applications,  or  suspension  or  revocation  of  product  license
approvals;

product seizure or detention, or refusal to permit the import or export of products; or

injunctions or the imposition of civil or criminal penalties.

The FDA strictly regulates the marketing, labeling, advertising and promotion of prescription drug products placed on the market. This regulation includes,
among  other  things,  standards  and  regulations  for  direct-to-consumer  advertising,  communications  regarding  unapproved  uses,  industry-sponsored
scientific  and  educational  activities,  and  promotional  activities  involving  the  Internet  and  social  media.  Promotional  claims  about  a  drug’s  safety  or
effectiveness are prohibited before the drug is approved. After approval, a drug product generally may not be promoted for uses that are not approved by
the FDA, as reflected in the product’s prescribing information, although it may be permissible, under very specific, narrow conditions, for a manufacturer
to  engage  in  nonpromotional,  non-misleading  communication  regarding  off-label  information,  such  as  distributing  scientific  or  medical  journal
information. In the United States, health care professionals are generally permitted to prescribe drugs for such uses not described in the drug’s labeling,
known  as  off-label  uses,  because  the  FDA  does  not  regulate  the  practice  of  medicine.  However,  FDA  regulations  impose  rigorous  restrictions  on
manufacturers’ communications, prohibiting the promotion of off-label uses.

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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. In addition, in October 2023, the FDA published draft guidance outlining the agency’s non-binding policies governing the distribution of
scientific information on unapproved uses to healthcare providers. This draft guidance calls for such communications to be truthful, non-misleading, factual
and  unbiased  and  include  all  information  necessary  for  healthcare  providers  to  interpret  the  strengths  and  weaknesses  and  validity  and  utility  of  the
information about the unapproved use.

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 DOJ, or the Office of the Inspector General of the Department of Health and Human Services, as well as state
authorities. This could subject a company to a range of penalties that could have a significant commercial impact, including civil and criminal fines, and
agreements that materially restrict the manner in which a company promotes or distributes drug products. The federal government has levied large civil and
criminal  fines  against  companies  for  alleged  improper  promotion,  and  has  also  requested  that  companies  enter  into  consent  decrees  or  permanent
injunctions under which specified promotional conduct is changed or curtailed.

In addition, the distribution of prescription pharmaceutical products is subject to the Prescription Drug Marketing Act, or PDMA, and its implementing
regulations,  as  well  as  the  Drug  Supply  Chain  Security  Act,  or  DSCSA,  which  regulate  the  distribution  and  tracing  of  prescription  drug  samples  at  the
federal level, and set minimum standards for the regulation of drug distributors by the states. The PDMA, its implementing regulations and state laws limit
the  distribution  of  prescription  pharmaceutical  product  samples,  and  the  DSCSA  imposes  requirements  to  ensure  accountability  in  distribution  and  to
identify and remove counterfeit and other illegitimate products from the market.

Section 505(b)(2) NDAs

NDAs for most new drug products are based on two full clinical trials which must contain substantial evidence of the safety and efficacy of the proposed
new product for the proposed use. These applications are submitted under Section 505(b)(1) of the FDCA. The FDA is, however, authorized to approve an
alternative type of NDA under Section 505(b)(2) of the FDCA. This type of application allows the applicant to rely, in part, on the FDA’s previous findings
of safety and efficacy for a similar product, or published literature. Specifically, Section 505(b)(2) applies to NDAs for a drug for which the investigations
made  to  show  whether  or  not  the  drug  is  safe  for  use  and  effective  in  use  and  relied  upon  by  the  sponsor  for  approval  of  the  application  “were  not
conducted by or for the sponsor and for which the sponsor has not obtained a right of reference or use from the person by or for whom the investigations
were conducted.”

Section 505(b)(2) authorizes the FDA to approve an NDA based on safety and effectiveness data that were not developed by the sponsor. NDAs filed under
Section 505(b)(2) may provide an alternate and potentially more expeditious pathway to FDA approval for new or improved formulations or new uses of
previously approved products. If the 505(b)(2) sponsor can establish that reliance on the FDA’s previous approval is scientifically appropriate, the sponsor
may eliminate the need to conduct certain preclinical or clinical studies of the new product. The FDA may also require companies to perform additional
studies or measurements to support the change from the approved product. The FDA may then approve the new drug candidate for all or some of the label
indications for which the referenced product has been approved, as well as for any new indication sought by the Section 505(b)(2) sponsor.

Generic Drugs and Regulatory Exclusivity

In 1984, with passage of the Hatch-Waxman Amendments to the FDCA, Congress established an abbreviated regulatory scheme authorizing the FDA to
approve generic drugs that are shown to contain the same active ingredients as, and to be bioequivalent to, drugs previously approved by the FDA pursuant
to NDAs. Such previously approved drugs are known as the reference listed drugs, or RLDs. Abbreviated new drug applications, or ANDAs, for generic
drugs generally do not include preclinical and clinical data to demonstrate safety and effectiveness. Instead, the sponsor may rely on the preclinical and
clinical testing previously conducted for the RLD.

Under the Hatch-Waxman Act, the FDA may not approve an ANDA or 505(b)(2) application until any applicable period of non-patent exclusivity for the
RLD has expired. The FDCA provides a period of five years of non-patent data exclusivity for a new drug containing a new chemical entity, or NCE. For
the purposes of this provision, an NCE is a drug that contains no active moiety that has previously been approved by the FDA in any other NDA. An active
moiety is the molecule or ion responsible for the physiological or pharmacological action of the drug substance. In cases where such NCE exclusivity has
been granted, a generic or follow-on drug application may not be filed with the FDA until the expiration of five years unless the submission is accompanied
by a Paragraph IV certification, in which case the sponsor may submit its application four years following the original product approval.

The  FDCA  also  provides  for  a  period  of  three  years  of  exclusivity  if  the  NDA  includes  reports  of  one  or  more  new  clinical  investigations,  other  than
bioavailability or bioequivalence studies, that were conducted by or for the sponsor and are essential to the approval of the application. This three-year
exclusivity period often protects changes to a previously approved drug

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product, such as new indications, dosage forms, route of administration, combination of ingredients. Three-year exclusivity would be available for a drug
product that contains a previously approved active moiety, provided the statutory requirement for a new clinical investigation is satisfied. Unlike five-year
NCE  exclusivity,  an  award  of  three-year  exclusivity  does  not  block  the  FDA  from  accepting  ANDAs  or  505(b)(2)  NDAs  seeking  approval  for  generic
versions of the drug as of the date of approval of the original drug product; rather, this three-year exclusivity covers only the conditions of use associated
with the new clinical investigations and, as a general matter, does not prohibit the FDA from approving follow-on applications for drugs containing the
original active ingredient.

Upon submission of an NDA or a supplement thereto, NDA sponsors are required to list with the FDA each patent with claims that cover the sponsor’s
product or an approved method of using the product. Upon approval of a new drug, each of the patents listed by the NDA sponsor is published in the FDA's
publication "Approved Drug Products with Therapeutic Equivalence Evaluations," also referred to as the Orange Book. When an ANDA sponsor files its
application  with  the  FDA,  the  applicant  is  required  to  certify  to  the  FDA  concerning  any  patents  listed  for  the  reference  product  in  the  Orange  Book.
Specifically, the sponsor must certify: (i) the required patent information has not been filed, (ii) the listed patent has expired, (iii) the listed patent has not
expired, but will expire on a particular date and approval is sought after patent expiration or (iv) the listed patent is invalid, unenforceable or will not be
infringed by the new product. To the extent that the Section 505(b)(2) sponsor is relying on studies conducted for an already approved product, the sponsor
is required to certify to the FDA concerning any patents listed for the approved product in the Orange Book to the same extent that an ANDA sponsor
would.

A certification that the new product will not infringe the already approved product’s listed patents or that such patents are invalid or unenforceable is called
a Paragraph IV certification. If the sponsor does not challenge the listed patents, the ANDA or 505(b)(2) NDA will not be approved until all the listed
patents claiming the referenced product have expired.

If the ANDA sponsor or the 505(b)(2) sponsor has provided a Paragraph IV certification to the FDA, the sponsor must also send notice of the Paragraph IV
certification to the NDA owner and patent holders once the ANDA or 505(b)(2) NDA has been accepted for filing by the FDA. The NDA owner and patent
holders  may  then  initiate  a  patent  infringement  lawsuit  in  response  to  the  notice  of  the  Paragraph  IV  certification.  The  filing  of  a  patent  infringement
lawsuit within 45 days after the receipt of a Paragraph IV certification automatically prevents the FDA from approving the ANDA or 505(b)(2) NDA until
the earlier of 30 months after the receipt of the Paragraph IV notice, expiration of the patent, or a decision in the infringement case that is favorable to the
ANDA or 505(b)(2) sponsor.

Pediatric Studies

Under the Pediatric Research Equity Act of 2003, or PREA, an NDA or supplement thereto must contain data that are adequate to assess the safety and
effectiveness of the product for the claimed indications in all relevant pediatric subpopulations, and to support dosing and administration for each pediatric
subpopulation for which the product is safe and effective. Sponsors must also submit pediatric study plans prior to the assessment data. Those plans must
contain an outline of the proposed pediatric study or studies the sponsor plans to conduct, including study objectives and design, any deferral or waiver
requests and other information required by regulation. The sponsor, the FDA, and the FDA’s internal review committee must then review the information
submitted, consult with each other and agree upon a final plan. The FDA or the sponsor may request an amendment to the plan at any time.

For drugs intended to treat a serious or life-threatening disease or condition, the FDA must, upon the request of a sponsor, meet to discuss preparation of
the initial pediatric study plan or to discuss deferral or waiver of pediatric assessments. In addition, the FDA will meet early in the development process to
discuss  pediatric  study  plans  with  sponsors,  and  the  FDA  must  meet  with  sponsors  by  no  later  than  the  end-of-phase  1  meeting  for  serious  or  life-
threatening diseases and by no later than ninety (90) days after the FDA’s receipt of the study plan.

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. The law requires the FDA to send a PREA Non-Compliance letter to sponsors who have failed
to submit their pediatric assessments required under PREA, have failed to seek or obtain a deferral or deferral extension or have failed to request approval
for  a  required  pediatric  formulation.  Unless  otherwise  required  by  regulation,  the  pediatric  data  requirements  do  not  apply  to  products  with  orphan
designation, although the FDA has recently taken steps to limit what it considers abuse of this statutory exemption in PREA by announcing that it does not
intend to grant any additional orphan drug designations for rare pediatric subpopulations of what is otherwise a common disease. The FDA maintains a list
of diseases that are exempt from the requirements of the PREA. In May 2023, the FDA issued new draft guidance that further describes the pediatric study
requirements under PREA.

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Pediatric Exclusivity

Pediatric exclusivity is another type of non-patent marketing exclusivity in the United States and, if granted, provides for the attachment of an additional
six months to the term of any existing patent or regulatory exclusivity for drug products. This six-month exclusivity may be granted if an NDA sponsor
submits pediatric data that fairly respond to a written request from the FDA for such data. 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 patent protection cover the product are extended by six months. This is not a patent term extension, but effectively extends the regulatory
period during which the FDA cannot approve another application. With regard to patents, the six-month pediatric exclusivity period will not attach to any
patents  for  which  a  generic  (ANDA  or  505(b)(2)  NDA)  sponsor  submitted  a  Paragraph  IV  certification,  unless  the  NDA  sponsor  or  patent  owner  first
obtains a court determination that the patent is valid and infringed by a proposed generic product.

Orphan Drug Designation and Exclusivity

Under the Orphan Drug Act, the FDA may designate a drug product as an “orphan drug” if it is intended to treat a rare disease or condition, generally
meaning that it affects fewer than 200,000 individuals in the United States, or more in cases in which there is no reasonable expectation that the cost of
developing and making a product available in the United States for treatment of the disease or condition will be recovered from sales of the product. A
company  must  seek  orphan  drug  designation  before  submitting  an  NDA  for  the  candidate  product.  If  the  request  is  granted,  the  FDA  will  disclose  the
identity  of  the  therapeutic  agent  and  its  potential  use.  Orphan  drug  designation  does  not  shorten  the  PDUFA  goal  dates  for  the  regulatory  review  and
approval process, although it does convey certain advantages such as tax benefits and exemption from the PDUFA application fee.

If a product with orphan designation receives the first FDA approval for the disease or condition for which it has such designation, or for a select indication
or use within the rare disease or condition for which it was designated, the product generally will receive orphan drug exclusivity. Orphan drug exclusivity
means that the FDA may not approve another sponsor’s marketing application for the same drug for the same condition for seven years, except in certain
limited circumstances. Orphan exclusivity does not block the approval of a different product for the same rare disease or condition, nor does it block the
approval  of  the  same  product  for  different  conditions.  If  a  drug  designated  as  an  orphan  drug  ultimately  receives  marketing  approval  for  an  indication
broader than what was designated in its orphan drug application, it may not be entitled to exclusivity.

Orphan drug exclusivity will also not bar approval of another product under certain circumstances, including if a subsequent product with the same drug for
the same condition is shown to be clinically superior to the approved product on the basis of greater efficacy or safety, or providing a major contribution to
patient care, or if the company with orphan drug exclusivity is not able to meet market demand. 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.

In September 2021, the Court of Appeals for the 11th Circuit held that, for the purpose of determining the scope of market exclusivity, the term “same
disease or condition” in the statute means the designated “rare disease or condition” and could not be interpreted by the FDA to mean the “indication or
use.”  Thus,  the  court  concluded  that  orphan  drug  exclusivity  applies  to  the  entire  designated  disease  or  condition  rather  than  the  “indication  or  use.”
Although there have been legislative proposals to overrule this decision, they have not been enacted into law. In January 2023, the FDA announced that, in
matters  beyond  the  scope  of  that  court’s  order,  the  FDA  will  continue  to  apply  its  existing  regulations  tying  orphan-drug  exclusivity  to  the  uses  or
indications for which the orphan drug was approved.

Patent Term Restoration and Extension

A patent claiming a new drug product, its method of use or its method of manufacture may be eligible for a limited patent term extension under the Hatch-
Waxman Act, which permits a patent restoration of up to five years for patent term lost during product development and the FDA regulatory review. The
restoration period granted on a patent covering a product is typically one-half the time between the effective date of when a clinical investigation involving
human  beings  has  begun  and  the  submission  date  of  an  application  for  approval,  plus  the  time  between  the  submission  date  of  an  application  and  the
ultimate approval date. Patent term restoration cannot be used to extend the remaining patent term past a total of 14 years from the product’s approval date.
Only  one  patent  applicable  to  an  approved  product  is  eligible  for  the  extension,  and  the  application  for  the  extension  must  be  submitted  prior  to  the
expiration of the patent in question. A patent that covers multiple products for which approval is sought can only be extended in connection with one of the
approvals. The USPTO reviews and approves the application for any patent term extension or restoration in consultation with the FDA.

Health Care Law and Regulation

Health  care  providers  and  third-party  payors  play  a  primary  role  in  the  recommendation  and  prescription  of  drug  products  that  are  granted  marketing
approval. Arrangements with providers, consultants, third-party payors and customers are subject to

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broadly applicable fraud and abuse, anti-kickback, false claims laws, patient privacy laws and regulations and other health care laws and regulations that
may  constrain  business  and/or  financial  arrangements.  Restrictions  under  applicable  federal  and  state  health  care  laws  and  regulations,  include  the
following:

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the  federal  Anti-Kickback  Statute,  which  prohibits,  among  other  things,  persons  and  entities  from  knowingly  and  willfully  soliciting,  offering,
paying, receiving or providing remuneration, directly or indirectly, in cash or in kind, to induce or reward either the referral of an individual for, or
the purchase, order or recommendation of, any good or service, for which payment may be made, in whole or in part, under a federal health care
program such as Medicare and Medicaid;

the federal civil and criminal false claims laws, including the civil False Claims Act, and civil monetary penalties laws, which prohibit individuals or
entities from, among other things, knowingly presenting, or causing to be presented, to the federal government, claims for payment that are false,
fictitious or fraudulent or knowingly making, using or causing to made or used a false record or statement to avoid, decrease or conceal an obligation
to pay money to the federal government;

the  federal  Health  Insurance  Portability  and  Accountability  Act  of  1996,  or  HIPAA,  which  created  additional  federal  criminal  laws  that  prohibit,
among other things, knowingly and willfully executing, or attempting to execute, a scheme to defraud any health care benefit program or making
false statements relating to health care matters;

HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act, and their respective implementing regulations,
including  the  Final  Omnibus  Rule  published  in  January  2013,  which  impose  obligations,  including  mandatory  contractual  terms,  with  respect  to
safeguarding the privacy, security and transmission of individually identifiable health information;

the  federal  false  statements  statute,  which  prohibits  knowingly  and  willfully  falsifying,  concealing  or  covering  up  a  material  fact  or  making  any
materially false statement in connection with the delivery of or payment for health care benefits, items or services;

the  Foreign  Corrupt  Practices  Act,  or  FCPA,  which  prohibits  companies  and  their  intermediaries  from  making,  or  offering  or  promising  to  make
improper payments to non-U.S. officials for the purpose of obtaining or retaining business or otherwise seeking favorable treatment;

the federal transparency requirements known as the federal Physician Payments Sunshine Act, under the Patient Protection and Affordable Care Act,
as amended by the Health Care Education Reconciliation Act, or the ACA, which requires certain manufacturers of drugs, devices, biologics and
medical supplies to report annually to the Centers for Medicare & Medicaid Services, or CMS, within the United States Department of Health and
Human Services, or HHS, information related to payments and other transfers of value made by that entity to physicians, other healthcare providers
and teaching hospitals, as well as ownership and investment interests held by physicians and their immediate family members; and

analogous state and foreign laws and regulations, such as state anti-kickback and false claims laws, which may apply to health care items or services
that are reimbursed by non-government third-party payors, including private insurers.

Further, some state laws require pharmaceutical companies to comply with the pharmaceutical industry’s voluntary compliance guidelines and the relevant
compliance guidance promulgated by the federal government in addition to requiring manufacturers to report information related to payments to physicians
and  other  health  care  providers  or  marketing  expenditures.  Additionally,  some  state  and  local  laws  require  the  registration  of  pharmaceutical  sales
representatives in the jurisdiction. State and foreign laws also govern the privacy and security of health information in some circumstances, many of which
differ from each other in significant ways and often are not preempted by HIPAA, thus complicating compliance efforts.

Violations of these laws are punishable by criminal and/or civil sanctions, including, in some instances, exclusion from participation in federal and state
health care programs, such as Medicare and Medicaid.

Pharmaceutical Insurance Coverage and Health Care Reform

In  the  United  States  and  other  countries,  patients  who  are  prescribed  treatments  for  their  conditions  and  providers  performing  the  prescribed  services
generally  rely  on  third-party  payors  to  reimburse  all  or  part  of  the  associated  health  care  costs.  Significant  uncertainty  exists  as  to  the  coverage  and
reimbursement  status  of  products  approved  by  the  FDA  and  other  government  authorities.  Thus,  even  if  a  product  candidate  is  approved,  sales  of  the
product will depend, in part, on the extent to which third-party payors, including government health programs in the United States such as Medicare and
Medicaid, commercial health insurers and managed care organizations, provide coverage and establish adequate reimbursement levels for the product. The
process for determining whether a payor will provide coverage for a product may be separate from the process for setting the price or reimbursement rate
that  the  payor  will  pay  for  the  product  once  coverage  is  approved.  Third-party  payors  are  increasingly  challenging  the  prices  charged,  examining  the
medical necessity and reviewing the cost-effectiveness of medical products and services and imposing controls to manage costs. Third-party payors may
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products on an approved list, also known as a formulary, which might not include all the approved products for a particular indication.

In  order  to  secure  coverage  and  reimbursement  for  any  product  that  might  be  approved  for  sale,  a  company  may  need  to  conduct  expensive
pharmacoeconomic studies to demonstrate the medical necessity and cost-effectiveness of the product, in addition to the costs required to obtain FDA or
other comparable marketing approvals. Nonetheless, product candidates may not be considered medically necessary or cost effective. A decision by a third-
party payor not to cover a product could reduce physician utilization once the product is approved and have a material adverse effect on sales, results of
operations and financial condition. Additionally, a payor’s decision to provide coverage for a product does not imply that an adequate reimbursement rate
will be approved. Further, one payor’s determination to provide coverage for a product does not assure that other payors will also provide coverage and
reimbursement for the product, and the level of coverage and reimbursement can differ significantly from payor to payor.

The containment of health care costs also has become a priority of federal, state and foreign governments, and the prices of products have been a focus in
this  effort.  Governments  have  shown  significant  interest  in  implementing  cost-containment  programs,  including  price  controls,  restrictions  on
reimbursement  and  requirements  for  substitution  of  generic  products.  Adoption  of  price  controls  and  cost-containment  measures,  and  adoption  of  more
restrictive policies in jurisdictions with existing controls and measures, could further limit a company’s revenue generated from the sale of any approved
products. 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 a company or its collaborators receive marketing approval, less favorable coverage policies and reimbursement rates
may be implemented in the future.

There  have  been  several  federal  and  state  proposals  during  the  last  few  years  regarding  the  pricing  of  pharmaceutical  and  biopharmaceutical  products,
limiting coverage and reimbursement for drugs, biologics and other medical products, government control and other changes to the health care system in
the United States.

In March 2010, the United States Congress enacted the ACA, which, among other things, includes changes to the coverage and payment for drug products
under government health care programs. Among the provisions of the ACA of importance to our potential product candidates are:

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an  annual,  nondeductible  fee  on  any  entity  that  manufactures  or  imports  specified  branded  prescription  drugs  and  biologic  agents,  apportioned
among these entities according to their market share in certain government healthcare programs;

expansion of eligibility criteria for Medicaid programs by, among other things, allowing states to offer Medicaid coverage to certain individuals with
income at or below 133% of the federal poverty level, thereby potentially increasing a manufacturer’s Medicaid rebate liability;

expanded manufacturers’ rebate liability under the Medicaid Drug Rebate Program, or MDRP, by increasing the minimum rebate for both branded
and  generic  drugs,  and  revising  the  definition  of  “average  manufacturer  price,”  or  AMP,  for  calculating  and  reporting  Medicaid  drug  rebates  on
outpatient prescription drug prices;

addressed a new methodology by which rebates owed by manufacturers under the MDRP are calculated for drugs that are inhaled, infused, instilled,
implanted or injected;

expanded the types of entities eligible for the 340B drug discount program;

established the Medicare Part D coverage gap discount program by requiring manufacturers to provide a 50% (and 70% starting January 1, 2019)
point-of-sale-discount off the negotiated price of applicable brand drugs to eligible beneficiaries during their coverage gap period as a condition for
the manufacturers’ outpatient drugs to be covered under Medicare Part D; and

a new Patient-Centered Outcomes Research Institute to oversee, identify priorities in, and conduct comparative clinical effectiveness research, along
with funding for such research.

Other legislative changes have been proposed and adopted in the United States since the ACA was enacted. In August 2011, the Budget Control Act of
2011,  among  other  things,  created  measures  for  spending  reductions  by  Congress.  A  Joint  Select  Committee  on  Deficit  Reduction,  tasked  with
recommending a targeted deficit reduction of at least $1.2 trillion for the years 2013 through 2021, was unable to reach required goals, thereby triggering
the legislation’s automatic reduction to several government programs. This includes aggregate reductions of Medicare payments to providers up to 2% per
fiscal year, which will now remain in effect for six months into 2032.

The  Consolidated  Appropriations  Act,  which  was  signed  into  law  by  President  Biden  in  December  2022,  made  several  changes  to  sequestration  of  the
Medicare program. Section 1001 of the Consolidated Appropriations Act delays the 4% Statutory Pay-As-You-Go Act of 2010, or PAYGO, sequester for
two years, through the end of 2024. Triggered by enactment of the American Rescue Plan Act of 2021, the 4% cut to the Medicare program would have
taken effect in January 2023. The

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Consolidated Appropriations Act’s health care offset title includes Section 4163, which extends the 2% Budget Control Act of 2011 Medicare sequester for
six months into 2032 and lowers the payment reduction percentages in years 2030 and 2031.

Since enactment of the ACA, there have been, and continue to be, 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 on December 22, 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.  On  November  10,  2020,  the
Supreme Court heard oral arguments as to whether the individual mandate portion of the ACA is an essential and inseverable feature of the ACA, and
therefore because the mandate was repealed as part of the Tax Cuts and Jobs Act of 2017, the remaining provisions of the ACA are invalid as well. On June
17,  2021,  the  Supreme  Court  dismissed  this  action  after  finding  that  the  plaintiffs  did  not  have  standing  to  challenge  the  ACA’s  minimum  essential
coverage provision at issue in the case. Litigation and legislation over the ACA are likely to continue, with unpredictable and uncertain results.

The  Trump  Administration  also  took  executive  actions  to  undermine  or  delay  implementation  of  the  ACA,  including  directing  federal  agencies  with
authorities and responsibilities under the ACA to waive, defer, grant exemptions from, or delay the implementation of any provision of the ACA that would
impose a fiscal or regulatory burden on states, individuals, healthcare providers, health insurers, or manufacturers of pharmaceuticals or medical devices.
On January 28, 2021, however, President Biden rescinded those orders and issued a new executive order which directs federal agencies to reconsider rules
and other policies that limit Americans’ access to health care, and consider actions that will protect and strengthen that access. Under this executive order,
federal agencies are directed to re-examine: policies that undermine protections for people with pre-existing conditions, including complications related to
COVID-19; demonstrations and waivers under Medicaid and the ACA that may reduce coverage or undermine the programs, including work requirements;
policies that undermine the Health Insurance Marketplace or other markets for health insurance; policies that make it more difficult to enroll in Medicaid
and under the ACA; and policies that reduce affordability of coverage or financial assistance, including for dependents.

Pharmaceutical Prices

The costs of prescription pharmaceuticals have also been the subject of considerable discussion in the United States. To date, there have been several recent
U.S. congressional inquiries, as well as proposed and enacted state and federal legislation designed to, among other things, bring more transparency to drug
pricing, review the relationship between pricing and manufacturer patient programs, and reduce the costs of drugs under Medicare and Medicaid. To those
ends,  the  Trump  Administration  issued  several  executive  orders  intended  to  lower  the  costs  of  prescription  drug  products.  Certain  of  these  orders  are
reflected in recently promulgated regulations, including an interim final rule implementing a most favored nation model for prices that would tie Medicare
Part B payments for certain physician-administered pharmaceuticals to the lowest price paid in other economically advanced countries, effective January 1,
2021, but such rule has been subject to a nationwide preliminary injunction. In December 2021, the CMS issued a final rule to rescind it. With issuance of
this rule, CMS stated that it will explore all options to incorporate value into payments for Medicare Part B pharmaceuticals and improve beneficiaries'
access to evidence-based care.

In addition, the HHS and the FDA published a final rule allowing states and other entities to develop a Section 804 Importation Program to import certain
prescription drugs from Canada into the United States. That regulation was challenged in a lawsuit by the Pharmaceutical Research and Manufacturers of
America, or PhRMA, but the case was dismissed by a federal district court in February 2023 after the court found that PhRMA did not have standing to sue
HHS. Nine states (Colorado, Florida, Maine, New Hampshire, New Mexico, North Dakota, Texas, Vermont and Wisconsin) have passed laws allowing for
the importation of drugs from Canada. Certain of these states have submitted Section 804 Importation Program proposals and are awaiting FDA approval.
On January 5, 2024, the FDA approved Florida’s plan for Canadian drug importation.

Further, the HHS finalized a regulation removing safe harbor protection for price reductions from pharmaceutical manufacturers to plan sponsors under
Part D, either directly or through pharmacy benefit managers, unless the price reduction is required by law. The final rule would also eliminate the current
safe harbor for Medicare drug rebates and create new safe harbors for beneficiary point-of-sale discounts and pharmacy benefit manager service fees. It
originally was set to go into effect on January 1, 2022, but with passage of the Inflation Reduction Act of 2022, or IRA, has been delayed by Congress to
January 1, 2032.

The IRA has implications for Medicare Part D, which is a program available to individuals who are entitled to Medicare Part A or enrolled in Medicare
Part  B  to  give  them  the  option  of  paying  a  monthly  premium  for  outpatient  prescription  drug  coverage.  Among  other  things,  the  IRA  requires
manufacturers  of  certain  drugs  to  engage  in  price  negotiations  with  Medicare  (beginning  in  2026),  with  prices  that  can  be  negotiated  subject  to  a  cap;
imposes rebates under Medicare Part B and Medicare Part D to penalize price increases that outpace inflation (first due in 2023); and replaces the Part D
coverage gap discount program with a new discounting program (beginning in 2025). The IRA permits the Secretary of the HHS to implement many of
these provisions through guidance, as opposed to regulation, for the initial years.

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Specifically, with respect to price negotiations, Congress authorized Medicare to negotiate lower prices for certain costly single-source drug and biologic
products that do not have competing generics or biosimilars and are reimbursed under Medicare Part B and Part D. CMS may negotiate prices for ten high-
cost drugs paid for by Medicare Part D starting in 2026, followed by 15 Medicare Part D drugs in 2027, 15 Medicare Part B or Part D drugs in 2028, and
20 Medicare Part B or Part D drugs in 2029 and beyond. This provision applies to drug products that have been approved for at least 9 years and biologics
that have been licensed for 13 years, but it does not apply to drugs and biologics that have been approved for a single rare disease or condition. Further, the
legislation subjects drug manufacturers to civil monetary penalties and a potential excise tax for failing to comply with the legislation by offering a price
that is not equal to or less than the negotiated “maximum fair price” under the law or for taking price increases that exceed inflation. The legislation also
requires manufacturers to pay rebates for drugs in Medicare Part D whose price increases exceed inflation. The new law also caps Medicare out-of-pocket
drug costs at an estimated $4,000 a year in 2024 and, thereafter beginning in 2025, at $2,000 a year.

The IRA includes a provision exempting orphan drugs from Medicare price negotiation but this exclusion has been interpreted by CMS in final guidance
issued  in  July  2023  to  apply  only  to  those  orphan  drugs  with  an  approved  indication  (or  indications)  for  a  single  rare  disease  or  condition.  The  final
guidance clarifies that CMS will consider only active designations/approvals when evaluating a drug for the exclusion, such that designations/indications
withdrawn before the selected drug publication date will not be considered. CMS also clarified that, if a drug loses its orphan drug exclusion status, the
agency will use the earliest date of approval/licensure to determine whether the product is a qualifying single source drug subject to price negotiations.

In June 2023, Merck filed a lawsuit against HHS and CMS asserting that, among other things, the IRA’s Drug Price Negotiation Program for Medicare
constitutes  an  uncompensated  taking  in  violation  of  the  Fifth  Amendment  of  the  Constitution.  Subsequently,  several  other  parties,  including  the  U.S.
Chamber  of  Commerce  and  pharmaceutical  companies,  also  filed  lawsuits  in  various  courts  with  similar  constitutional  claims  against  HHS  and  CMS.
Litigation involving these and other provisions of the IRA will continue with unpredictable and uncertain results.

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. Many states have
required drug manufacturers and other entities in the drug supply chain, including health carriers, pharmacy benefit managers and wholesale distributors, to
disclose information about pricing of pharmaceuticals. In addition, regional health care authorities and individual hospitals are increasingly using bidding
procedures to determine what pharmaceutical products and which suppliers will be included in their prescription drug and other health care programs.

Review and Approval of Medicinal Products in the European Union

In  order  to  market  any  product  outside  of  the  United  States,  a  sponsor  must  also  comply  with  numerous  and  varying  regulatory  requirements  of  other
countries and jurisdictions regarding quality, safety and efficacy, and governing, among other things, clinical trials, marketing authorization, commercial
sales  and  distribution  of  products.  Whether  or  not  it  obtains  FDA  approval  for  a  product,  a  sponsor  will  need  to  obtain  the  necessary  approvals  by  the
comparable  non-U.S.  regulatory  authorities  before  it  can  commence  clinical  trials  or  marketing  of  the  product  in  those  countries  or  jurisdictions.
Specifically, the process governing approval of medicinal products in the EU generally follows the same lines as in the United States. It entails satisfactory
completion  of  preclinical  studies  and  adequate  and  well-controlled  clinical  trials  to  establish  the  safety  and  efficacy  of  the  product  for  each  proposed
indication.  It  also  requires  the  submission  to  the  relevant  competent  authorities  of  a  marketing  authorization  application,  or  MAA,  and  granting  of  a
marketing authorization by these authorities before the product can be marketed and sold in the EU.

Clinical Trial Approval

On January 31, 2022, the Clinical Trials Regulation (EU) No 536/2014, or the Clinical Trials Regulation, became effective in the EU and replaced the prior
Clinical Trials Directive 2001/20/EC. The Clinical Trials Regulation aims to simplify and streamline the authorization, conduct and transparency of clinical
trials in the EU. 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 EU, 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.

Beyond streamlining the process, the Clinical Trials Regulation includes a single set of documents to be prepared and submitted for the application as well
as simplified reporting procedures for clinical trial sponsors; and a harmonized procedure for the assessment of applications for clinical trials, which is
divided in two parts. Part I is assessed by the competent authorities of all EU Member States in which an application for authorization of a clinical trial has
been submitted, or EU Member States

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concerned. Part II is assessed separately by each EU Member State concerned. Strict deadlines have been established for the assessment of clinical trial
applications. The role of the relevant ethics committees in the assessment procedure will continue to be governed by the national law of the EU Member
State concerned. However, overall related timelines will be defined by the Clinical Trials Regulation.

The Clinical Trials 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 clinical site after the applicable ethics committee has issued a favorable opinion.

Parties conducting certain clinical trials must, as in the United States, post clinical trial information in the EU at the EudraCT website.

Priority Medicines (PRIME) Designation in the EU

In March 2016, the EMA launched an initiative to facilitate development of product candidates in indications, often rare, for which few or no therapies
currently  exist.  The  priority  medicines,  or  PRIME,  scheme  is  intended  to  encourage  drug  development  in  areas  of  unmet  medical  need  and  provides
accelerated assessment of products representing substantial innovation reviewed under the centralized procedure. Products from small- and medium-sized
enterprises  may  qualify  for  earlier  entry  into  the  PRIME  scheme  than  larger  companies.  Many  benefits  accrue  to  sponsors  of  product  candidates  with
PRIME designation, including but not limited to, early and proactive regulatory dialogue with the EMA, frequent discussions on clinical trial designs and
other development program elements, and accelerated MAA assessment once a dossier has been submitted. Importantly, a dedicated agency contact and
rapporteur from the Committee for Human Medicinal Products, or CHMP, or Committee for Advanced Therapies are appointed early in the PRIME scheme
facilitating increased understanding of the product at EMA’s Committee level.

Marketing Authorization

To  obtain  a  marketing  authorization  for  a  product  under  EU  regulatory  systems,  a  sponsor  must  submit  an  MAA  either  under  a  centralized  procedure
administered  by  the  EMA,  or  one  of  the  procedures  administered  by  competent  authorities  in  the  EU  Member  States,  decentralized  procedure;  national
procedure; or mutual recognition procedure.

The centralized procedure provides for the grant of a single marketing authorization by the EMA that is valid in all EU Member States, as well as Iceland,
Liechtenstein and Norway. The centralized procedure is compulsory for specific products, including for medicines produced by certain biotechnological
processes, products designated as orphan medicinal products, advanced therapy medicinal products, and products with a new active substance indicated for
the  treatment  of  certain  diseases.  For  products  with  a  new  active  substance  indicated  for  the  treatment  of  other  diseases  and  products  that  are  highly
innovative or for which a centralized process is in the interest of patients, the centralized procedure may be optional. The centralized procedure may at the
request  of  the  sponsor  also  be  used  in  certain  other  cases.  The  centralized  procedure  is  optional  for  products  that  represent  a  significant  therapeutic,
scientific or technical innovation, or whose authorization would be in the interest of public health.

Under the centralized procedure, the maximum timeframe for the evaluation of an MAA is 210 days, excluding clock stops, when additional information or
written or oral explanation is to be provided by the sponsor in response to questions of the CHMP. Accelerated assessment might be granted by the CHMP
in  exceptional  cases,  when  a  medicinal  product  is  of  major  interest  from  the  point  of  view  of  public  health  and  from  the  viewpoint  of  therapeutic
innovation. The timeframe for the evaluation of an MAA under the accelerated assessment procedure is 150 days, excluding stop clocks.

There are also two other possible routes to authorize medicinal products in several EU countries, which are available for investigational medicinal products
that fall outside the scope of the centralized procedure:

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Decentralized procedure. Using the decentralized procedure, a sponsor may apply for simultaneous authorization in more than one EU country of
medicinal products that have not yet been authorized in any EU country and that do not fall within the mandatory scope of the centralized procedure.
The sponsor may choose a member state as the reference member state to lead the scientific evaluation of the application.

Mutual  recognition  procedure.  In  the  mutual  recognition  procedure,  a  medicine  is  first  authorized  in  one  EU  Member  State  (which  acts  as  the
reference  member  state),  in  accordance  with  the  national  procedures  of  that  country.  Following  this,  further  marketing  authorizations  can  be
progressively sought from other EU countries in a procedure whereby the countries concerned agree to recognize the validity of the original, national
marketing authorization produced by the reference member state.

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Under  the  above-described  procedures,  before  granting  the  marketing  authorization,  the  EMA  or  the  competent  authorities  of  the  Member  States  of  the
European Economic Area, or EEA, make an assessment of the risk-benefit balance of the product on the basis of scientific criteria concerning its quality,
safety and efficacy.

Conditional Approval

The European Commission may also grant a so-called “conditional marketing authorization” prior to obtaining the comprehensive clinical data required for
an application for a full marketing authorization. Such conditional marketing authorizations may be granted for product candidates (including medicines
designated as orphan medicinal products), if (i) the product candidate is intended for the treatment, prevention or medical diagnosis of seriously debilitating
or life-threatening diseases, (ii) the risk-benefit balance of the product candidate is positive; (iii) it is likely that the sponsor will be in a position to provide
the  required  comprehensive  clinical  trial  data;  (iv)  the  product  fulfills  an  unmet  medical  need;  and  (v)  the  benefit  to  public  health  of  the  immediate
availability on the market of the medicinal product concerned outweighs the risk inherent in the fact that additional data are still required. A conditional
marketing  authorization  may  contain  specific  obligations  to  be  fulfilled  by  the  marketing  authorization  holder,  including  obligations  with  respect  to  the
completion of ongoing or new clinical studies, and with respect to the collection of pharmacovigilance data. Conditional marketing authorizations are valid
for one year, and may be renewed annually, if the risk-benefit balance remains positive, and after an assessment of the need for additional or modified
conditions and/or specific obligations. The timelines for the centralized procedure described above also apply with respect to the review by the CHMP of
applications for a conditional marketing authorization, but applicants can also request the EMA to conduct an accelerated assessment, for instance in cases
of unmet medical needs.

Regulatory Data Protection in the EU

In  the  EU,  innovative  medicinal  products  approved  based  on  a  complete  independent  data  package  qualify  for  eight  years  of  data  exclusivity  upon
marketing authorization and an additional two years of market exclusivity pursuant to Directive 2001/83/EC. Regulation (EC) No 726/2004 repeats this
entitlement  for  medicinal  products  authorized  in  accordance  with  the  centralized  authorization  procedure.  Data  exclusivity  prevents  sponsors  for
authorization of generics of these innovative products from referencing the innovator’s data to assess a generic (abridged) application for a period of eight
years.  During  an  additional  two-year  period  of  market  exclusivity,  a  generic  MAA  can  be  submitted  and  authorized,  and  the  innovator’s  data  may  be
referenced, but no generic medicinal product can be placed on the EU market until the expiration of the market exclusivity. The overall ten-year period will
be extended to a maximum of 11 years if, during the first eight years of those ten years, the marketing authorization holder obtains an authorization for one
or more new therapeutic indications which, during the scientific evaluation prior to their authorization, are held to bring a significant clinical benefit in
comparison with existing therapies. Even if a compound is considered to be an NCE so that the innovator gains the prescribed period of data exclusivity,
another company nevertheless could also market another version of the product if such company obtained marketing authorization based on an MAA with a
complete independent data package of pharmaceutical, preclinical and clinical trials.

Periods of Authorization and Renewals

A marketing authorization has an initial validity for five years in principle. The marketing authorization may be renewed after five years based on a re-
evaluation of the risk-benefit balance by the EMA or by the competent authority of the EU Member State. To this end, the marketing authorization holder
must provide the EMA or the competent authority with a consolidated version of the file in respect of quality, safety and efficacy, including all variations
introduced  since  the  marketing  authorization  was  granted,  at  least  six  months  before  the  marketing  authorization  ceases  to  be  valid.  The  European
Commission or the competent authorities of the EU Member States may decide, on justified grounds relating to pharmacovigilance, to proceed with one
additional five-year period of marketing authorization. Once subsequently definitively renewed, the marketing authorization shall be valid for an unlimited
period. Any authorization which is not followed by the actual placing of the medicinal product on the EU market (in case of centralized procedure) or on
the market of the authorizing EU Member State within three years after authorization ceases to be valid (the so-called sunset clause).

Pediatric Studies and Exclusivity

Prior to obtaining a marketing authorization in the EU, sponsors must demonstrate compliance with all measures included in an EMA-approved Pediatric
Investigation  Plan,  or  PIP,  covering  all  subsets  of  the  pediatric  population,  unless  the  EMA  has  granted  a  product-specific  waiver,  a  class  waiver,  or  a
deferral  for  one  or  more  of  the  measures  included  in  the  PIP.  The  respective  requirements  for  all  marketing  authorization  procedures  are  laid  down  in
Regulation  (EC)  No  1901/2006,  the  so-called  Pediatric  Regulation.  This  requirement  also  applies  when  a  company  wants  to  add  a  new  indication,
pharmaceutical  form  or  route  of  administration  for  a  medicine  that  is  already  authorized.  The  Pediatric  Committee  of  the  EMA,  or  PDCO,  may  grant
deferrals for some medicines, allowing a company to delay development of the medicine for children until there is enough information to demonstrate its
effectiveness and safety in adults. The PDCO may also grant waivers when development of a medicine for children is not needed or not appropriate, such
as for diseases that only affect the adult population. Before an MAA can be filed or an existing marketing authorization can be amended, the EMA requests
that companies comply with the agreed studies and measures listed in each relevant PIP. If a sponsor obtains a marketing authorization in all EU Member
States,

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or  a  marketing  authorization  granted  in  the  centralized  procedure  by  the  European  Commission,  and  the  study  results  for  the  pediatric  population  are
included in the product information, even when negative, the medicine is then eligible for an additional six month period of qualifying patent protection
through  extension  of  the  term  of  the  Supplementary  Protection  Certificate,  or  SPC,  or  alternatively  a  one  year  extension  of  the  regulatory  market
exclusivity from ten to eleven years, as selected by the marketing authorization holder.

Orphan Drug Designation and Exclusivity

Regulation  (EC)  No.  141/2000,  as  implemented  by  Regulation  (EC)  No.  847/2000  provides  that  a  drug  can  be  designated  as  an  orphan  drug  by  the
European  Commission  if  its  sponsor  can  establish  that  the  product  is  intended  for  the  diagnosis,  prevention  or  treatment  of:  (1)  a  life-threatening  or
chronically debilitating condition affecting not more than five in 10,000 persons in the EU when the application is made; or (2) a life-threatening, seriously
debilitating or serious and chronic condition in the EU and that without incentives it is unlikely that the marketing of the drug in the EU would generate
sufficient return to justify the necessary investment. For either of these conditions, the sponsor must demonstrate that there exists no satisfactory method of
diagnosis, prevention or treatment of the condition in question that has been authorized in the EU or, if such method exists, the drug will be of significant
benefit to those affected by that condition.

Once authorized, orphan medicinal products are entitled to 10 years of market exclusivity in all EU Member States and a range of other benefits during the
development  and  regulatory  review  process,  including  scientific  assistance  for  study  protocols,  authorization  through  the  centralized  marketing
authorization  procedure  covering  all  member  countries,  and  a  reduction  or  elimination  of  registration  and  marketing  authorization  fees.  However,
marketing authorization may be granted to a similar medicinal product with the same orphan indication during the 10-year period with the consent of the
marketing authorization holder for the original orphan medicinal product or if the manufacturer of the original orphan medicinal product is unable to supply
sufficient quantities. Marketing authorization may also be granted to a similar medicinal product with the same orphan indication if this product is safer,
more effective or otherwise clinically superior to the original orphan medicinal product. The period of market exclusivity may, in addition, be reduced to
six  years  if  it  can  be  demonstrated  on  the  basis  of  available  evidence  that  the  original  orphan  medicinal  product  is  sufficiently  profitable  not  to  justify
maintenance of market exclusivity.

Patent Term Extensions

The EU also provides for patent term extension through SPCs. The rules and requirements for obtaining an SPC are similar to those in the United States.
An SPC may extend the term of a patent for up to five years after its originally scheduled expiration date and can provide up to a maximum of 15 years of
marketing exclusivity for a drug. In certain circumstances, these periods may be extended for six additional months if pediatric exclusivity is obtained.
Although SPCs are available throughout the EU, sponsors must apply on a country by country basis. Similar patent term extension rights exist in certain
other foreign jurisdictions outside the EU.

Regulatory Requirements after a Marketing Authorization has been Obtained

When  an  authorization  for  a  medicinal  product  in  the  EU  is  obtained,  the  holder  of  the  marketing  authorization  is  required  to  comply  with  a  range  of
requirements applicable to the manufacturing, marketing, promotion and sale of medicinal products. These include:

•

•

•

The EU’s pharmacovigilance or safety reporting rules, which can impose post-authorization studies and additional monitoring obligations.

The  manufacturing  of  authorized  medicinal  products,  for  which  a  separate  manufacturer’s  license  is  mandatory,  must  also  be  conducted  in  strict
compliance  with  the  applicable  EU  laws,  regulations  and  guidance,  including  Directive  2001/83/EC,  Directive  2003/94/EC,  Regulation  (EC)  No
726/2004  and  the  European  Commission  Guidelines  for  Good  Manufacturing  Practice.  These  requirements  include  compliance  with  EU  cGMP
standards when manufacturing medicinal products and API, including the manufacture of API outside of the EU with the intention to import the API
into the EU.

The marketing and promotion of authorized drugs, including industry-sponsored continuing medical education and advertising directed toward the
prescribers of drugs and/or the general public, are strictly regulated in the EU notably under Directive 2001/83EC, as amended, and EU Member
State laws. Direct-to-consumer advertising of prescription medicines is prohibited across the EU.

General Data Protection Regulation

Many  countries  outside  of  the  United  States  maintain  rigorous  laws  governing  the  privacy  and  security  of  personal  information.  The  collection,  use,
disclosure,  transfer,  or  other  processing  of  personal  data,  including  personal  health  data,  regarding  individuals  who  are  located  in  the  EEA,  and  the
processing of personal data that takes place in the EEA, is subject to the European Union 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

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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  EEA,  including  the  United  States,  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. There are ongoing concerns about the ability of companies to
transfer  personal  data  from  the  EU  to  other  countries.  In  July  2020,  the  Court  of  Justice  of  the  European  Union,  or  the  CJEU,  invalidated  the  EU-U.S.
Privacy Shield framework, one of the mechanisms used to legitimize the transfer of personal data from the EEA to the United States. The CJEU decision
also drew into question the long-term viability of an alternative means of data transfer, the standard contractual clauses, for transfers of personal data from
the EEA to the United States. This CJEU decision may lead to increased scrutiny on data transfers from the EU to the United States generally and increase
our costs of compliance with data privacy legislation as well as our costs of negotiating appropriate privacy and security agreements with our vendors and
business partners.

Additionally,  in  October  2022,  President  Biden  signed  an  executive  order  to  implement  the  EU-U.S.  Data  Privacy  Framework,  which  would  serve  as  a
replacement  to  the  EU-U.S.  Privacy  Shield.  The  EU  initiated  the  process  to  adopt  an  adequacy  decision  for  the  EU-U.S.  Data  Privacy  Framework  in
December 2022 and the European Commission adopted the adequacy decision on July 10, 2023. The adequacy decision permits U.S. companies who self-
certify  to  the  EU-U.S.  Data  Privacy  Framework  to  rely  on  it  as  a  valid  data  transfer  mechanism  for  data  transfers  from  the  EU  to  the  United  States.
However, some privacy advocacy groups have already suggested that they will be challenging the EU-U.S. Data Privacy Framework. If these challenges
are successful, they may not only impact the EU-U.S. Data Privacy Framework, but also further limit the viability of the standard contractual clauses and
other data transfer mechanisms. The uncertainty around this issue has the potential to impact our business.

As with other issues related to withdrawal of the United Kingdom from the EU, there are open questions about how personal data will be protected in the
United Kingdom and whether personal information can transfer from the EU to the United Kingdom. Following the withdrawal of the United Kingdom
from the EU, the UK Data Protection Act 2018 applies to the processing of personal data that takes place in the United Kingdom and includes parallel
obligations to those set forth by GDPR. While the Data Protection Act 2018 in the United Kingdom that “implements” and complements the GDPR has
achieved Royal Assent on May 23, 2018 and is now effective in the United Kingdom, it is still unclear whether transfer of data from the EEA to the United
Kingdom will remain lawful under GDPR. The UK government has already determined that it considers all EU and EEA member states to be adequate for
the purposes of data protection, ensuring that data flows from the United Kingdom to the EU/EEA remain unaffected. In addition, a recent decision from
the European Commission appears to deem the United Kingdom as being “essentially adequate” for purposes of data transfer from the EU to the United
Kingdom, although this decision may be re-evaluated in the future.

Beyond GDPR, there are privacy and data security laws in a growing number of countries around the world. While many loosely follow GDPR as a model,
other laws contain different or conflicting provisions. These laws will impact our ability to conduct our business activities, including both our clinical trials
and any eventual sale and distribution of commercial products.

Brexit and the Regulatory Framework in the United Kingdom

The United Kingdom’s withdrawal from the EU took place on January 31, 2020. The EU and the United Kingdom reached an agreement on their new
partnership in the Trade and Cooperation Agreement, which was applied provisionally beginning on January 1, 2021, and which entered into force on May
1, 2021. The Trade and Cooperation Agreement focuses primarily on free trade by ensuring no tariffs or quotas on trade in goods, including healthcare
products  such  as  medicinal  products.  The  EU  and  the  United  Kingdom  will  form  two  separate  markets  governed  by  two  distinct  regulatory  and  legal
regimes, except that Northern Ireland will continue to broadly follow EU laws as further described below. As such, the Trade and Cooperation Agreement
seeks to minimize barriers to trade in goods while accepting that border checks will become inevitable as a consequence that the United Kingdom is no
longer part of the single market. As of January 1, 2021, the Medicines and Healthcare products Regulatory Agency, or 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.

On  February  27,  2023,  the  United  Kingdom  government  and  the  European  Commission  announced  a  political  agreement  in  principle  to  replace  the
Northern Ireland Protocol with a new set of arrangements, known as the “Windsor Framework”. This new framework fundamentally changes the existing
system under the Northern Ireland Protocol, including with respect to the regulation of medicinal products in the United Kingdom. In particular, the MHRA
will be responsible for approving all

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medicinal  products  destined  for  the  United  Kingdom  market  (i.e.,  Great  Britain  and  Northern  Ireland),  and  the  EMA  will  no  longer  have  any  role  in
approving medicinal products destined for Northern Ireland. A single United Kingdom-wide marketing authorization will be granted by the MHRA for all
medicinal products to be sold in the United Kingdom, enabling products to be sold in a single pack and under a single authorization throughout the United
Kingdom. The Windsor Framework was approved by the EU-United Kingdom Joint Committee on March 24, 2023. The United Kingdom government and
the EU will enact legislative measures to bring it into law. On June 9, 2023, the MHRA announced that the medicines aspects of the Windsor Framework
will apply from January 1, 2025. The Human Medicines Regulations 2012 (SI 2012/1916) (as amended), or HMR, is the primary legal instrument for the
regulation of medicines in the United Kingdom. The HMR has incorporated into the domestic law the body of EU law instruments governing medicinal
products that pre-existed prior to the United Kingdom’s withdrawal from the EU.

EU laws which have been transposed into United Kingdom law through secondary legislation continue to be applicable as “retained EU law”. However,
new legislation such as the Clinical Trials Regulation will not be applicable in Great Britain. Since a significant proportion of the regulatory framework for
pharmaceutical  products  in  the  United  Kingdom  covering  the  quality,  safety,  and  efficacy  of  pharmaceutical  products,  clinical  trials,  marketing
authorizations, commercial sales, and distribution of pharmaceutical products is derived from EU directives and regulations, Brexit may have a material
impact upon the regulatory regime with respect to the development, manufacture, importation, approval, and commercialization of our product candidates
in  the  United  Kingdom.  For  example,  the  United  Kingdom  is  no  longer  covered  by  the  centralized  procedures  for  obtaining  EU-wide  marketing
authorizations from the EMA, and a separate marketing authorization will be required to market our product candidates in the United Kingdom. A new
international  recognition  framework  has  been  in  place  since  January  1,  2024,  whereby  the  MHRA  will  have  regard  to  decisions  on  the  approval  of
marketing authorizations made by the EMA and certain other regulators when determining an application for a new Great Britain marketing authorization.

Pricing Decisions for Approved Products

In the EU, pricing and reimbursement schemes vary widely from country to country. Some countries provide that products may be marketed only after a
reimbursement price has been agreed. Some countries may require the completion of additional studies that compare the cost-effectiveness of a particular
product candidate to currently available therapies or so-called health technology assessments, in order to obtain reimbursement or pricing approval. For
example,  the  EU  provides  options  for  its  Member  States  to  restrict  the  range  of  products  for  which  their  national  health  insurance  systems  provide
reimbursement and to control the prices of medicinal products for human use. Member States may approve a specific price for a product or it may instead
adopt a system of direct or indirect controls on the profitability of the company placing the product on the market. Other Member States allow companies
to fix their own prices for products, but monitor and control prescription volumes and issue guidance to physicians to limit prescriptions. Recently, many
countries in the EU have increased the amount of discounts required on pharmaceuticals, and these efforts could continue as countries attempt to manage
health care expenditures, especially in light of the severe fiscal and debt crises experienced by many countries in the EU. The downward pressure on health
care costs in general, particularly prescription products, has become intense. As a result, increasingly high barriers are being erected to the entry of new
products. Political, economic and regulatory developments may further complicate pricing negotiations, and negotiations may continue after reimbursement
has  been  obtained.  Reference  pricing  used  by  various  Member  States,  and  parallel  trade  (i.e.,  arbitrage  between  low-priced  and  high-priced  Member
States), can further reduce prices. There can be no assurance that any country with price controls or reimbursement limitations for pharmaceutical products
will allow favorable reimbursement and pricing arrangements for any products, if approved in those countries.

Segment Reporting and Geographical Information

We are engaged solely in the discovery and development of medicines in the field of cellular metabolism. Accordingly, we have determined that we operate
in one operating segment.

Employees and Human Capital

As  of  December  31,  2023,  we  had  383  full-time  employees  and  3  part-time  employees,  all  based  in  the  United  States  and  of  which  100  held  Ph.D.,
Pharm.D. or M.D. degrees. None of our employees are represented by a labor union or covered under a collective bargaining agreement. We also retain
independent  contractors  to  support  the  goals  of  our  organization.  We  prioritize  our  employee  experience  and  we  are  proud  of  our  strong  employee  and
contractor relations.

We understand that attracting, retaining, engaging and supporting our talented team and maintaining a diverse and inclusive organization is critical to our
success and our ability to increase the value we can provide for patients, shareholders and all stakeholders.

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We strive to cultivate a positive, respectful and fair work environment guided by the following three pillars:

•

•

Flexibility: We provide flexible work arrangements which result in happier, more engaged and more productive employees. We encourage a
culture that promotes different perspectives, different work styles, health and wellness, care of families and productivity.

Psychological safety: We aim to ensure our teams experience psychological safety – the belief that risk-taking and failure will not be punished,
which leads to higher performing teams, more creativity, candor and better results.

• Deliberate development: We emphasize providing ongoing opportunities for employees to grow professionally, whether through bringing in
external speakers, offering preceptorships in different departments, and providing tuition reimbursement and leadership skills training.

To incentivize and reward strong performance, we have adopted a pay for performance philosophy and we provide competitive and balanced compensation
and  benefits  package,  including  short-term  and  long-term  incentives,  discretionary  paid  time  off  policy,  generous  parental  and  family  leave  plans  and
premium medical benefits.

We  are  committed  to  fostering  a  welcoming  and  diverse  workplace  in  which  individuals  from  a  variety  of  backgrounds  can  thrive.  Our  diversity  and
inclusion program focuses on valuing three types of differences:

•

•

•

Representative differences (demographic diversity, such as gender, race, ethnicity, sexual orientation)

Experiential differences (identities based on life experiences that may change over time)

Cognitive differences (unique ways of understanding and interpreting the world)

We  set  goals  and  track  our  progress  to  ensure  that  we  continue  to  incorporate  different  voices  across  the  business.  We  have  an  active  cross-functional
diversity council that furthers our commitment to building a diverse and inclusive organization by:

•

•

Representing and reflecting the different voices in the Agios community

Furthering the work of diversity, equity and inclusion at Agios and in our communities

• Working  in  partnership  with  our  leadership,  human  resources  and  employee  resource  groups  to  share,  drive  and  lead  our  diversity,  equity  and

inclusion efforts

We are a majority female organization and maintain significant representation at all levels, including the Board of Directors. As of December 31, 2023,
59% of our workforce were women. Racial and ethnic diversity continues to be an area of focus at the Company. As of December 31, 2023, 33% of our
workforce  were  ethnically  diverse  and  47%  of  all  new  hires  that  joined  the  Company  in  2023  were  ethnically  diverse.  We  recognize  that  there  is  still
important progress to be made, particularly as it relates to Black and Latino representation at our company, and this remains an area of continued emphasis
for us.

We regularly evaluate the effectiveness of our human capital management practices through employee surveys and fostering a culture of ongoing feedback
and two-way dialogue. We received feedback from employees that helped to inform how we approach programs and opportunities to improve the employee
experience heading into 2024. In addition, we track important human capital metrics such as turnover rate. Voluntary and involuntary turnover rates across
all levels (executives/ senior managers, mid-level managers and professionals) are in alignment with the industry average.

We  are  committed  to  providing  employees  with  an  opportunity  to  choose  the  right  working  arrangement  for  them  based  on  their  role:  whether  remote,
hybrid, or onsite in our Cambridge office, and we continue to evaluate how we can enhance these arrangements for an optimal employee experience. The
opportunity to work remotely has enabled us to hire a more diverse team including individuals from different locations and backgrounds and with a variety
of responsibilities in their personal lives. In 2023, 84% of our new hires chose to work remotely and our overall organization now has a majority population
of remote workers representing 59% of all employees.

We believe our ability to evolve with the ever-changing environment, coupled with our long-standing culture and values around flexibility and connection,
continue to help us deliver for patients.

Our Corporate Information

Our executive offices are located at 88 Sidney Street, Cambridge, Massachusetts 02139, and our telephone number is (617) 649-8600. Our website address
is www.agios.com. References to our website are inactive textual references only and the content of our website should not be deemed incorporated by
reference into this Annual Report on Form 10-K.

Available Information

Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and any amendments to these reports filed or furnished
pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, are

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available free of charge on our website located at www.agios.com as soon as reasonably practicable after they are filed with or furnished to the Securities
and Exchange Commission, or SEC. These reports are also available at the SEC’s website at www.sec.gov.

A copy of our Corporate Governance Guidelines, Code of Business Conduct and Ethics and the charters of the Audit Committee, Compensation and People
Committee, Nominating and Corporate Governance Committee, and Science and Technology Committee are posted on our website, www.agios.com, under
the heading “Corporate Governance” and are available in print to any person who requests copies by contacting us by calling (617) 649-8600 or by writing
to Agios Pharmaceuticals, Inc., 88 Sidney Street, Cambridge, Massachusetts 02139.

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Item 1A. Risk Factors

The following risk factors and other information included in this Annual Report on Form 10-K should be carefully considered. The risks and uncertainties
described below are not the only risks and uncertainties we face. Additional risks and uncertainties not presently known to us or that we presently deem
less significant may also impair our business operations. Please see page 1 of this Annual Report on Form 10-K for a discussion of some of the forward-
looking statements that are qualified by these risk factors. If any of the following risks occur, our business, financial condition, results of operations and
future growth prospects could be materially and adversely affected.

Risks Related to the Discovery, Development, and Commercialization of our Products and Product Candidates

If we do not successfully commercialize PYRUKYND® and other products for which we receive approval, our prospects may be substantially harmed.

In February 2022, we obtained marketing approval from the FDA for PYRUKYND® (mitapivat) for the treatment of hemolytic anemia in adults with PK
deficiency  in  the  United  States.  In  November  2022,  we  received  marketing  authorization  from  the  European  Commission  for  PYRUKYND®  for  the
treatment of PK deficiency in adult patients in the EU and in December 2022 we received marketing authorization in Great Britain for PYRUKYND® for
the treatment of PK deficiency in adult patients under the European Commission Decision Reliance Procedure. PYRUKYND® is the first product in our
rare disease portfolio that has received marketing approval and is our first product following the sale of our oncology business to Servier in March 2021.
Our ability to generate meaningful revenue from PYRUKYND® will depend heavily on our successful development and commercialization of the product.
In connection with our regulatory approvals in the EU and Great Britain, we are currently providing access to PYRUKYND® free of charge for eligible
patients in those jurisdictions through a global managed access program.

The development and commercialization of PYRUKYND® could be unsuccessful if:

•

the medical community and third-party payors do not accept PYRUKYND® as safe, efficacious and cost-effective for the treatment of adults with
PK deficiency in the approved jurisdictions;

• we fail to maintain the necessary financial resources and expertise to manufacture, market and sell PYRUKYND®;

• we  fail  to  develop,  implement  and  maintain  effective  marketing,  sales  and  distribution  strategies  and  operations  for  the  development  and

commercialization of PYRUKYND®;

• we  fail  to  continue  to  develop,  validate  and  maintain  a  commercially  viable  manufacturing  process  for  PYRUKYND®  that  is  compliant  with

current good manufacturing practices, or cGMP;

• we fail to successfully obtain third party reimbursement and generate commercial demand that results in expected sales of PYRUKYND®;

•

PYRUKYND® may become subject to unfavorable pricing regulations and third-party reimbursement practices;

• we encounter any third-party patent interference, derivation, inter partes review, post-grant review, reexamination or patent infringement claims

with respect to PYRUKYND®;

• we fail to comply with regulatory and legal requirements applicable to the sale of PYRUKYND®;

•

•

•

•

•

competing drug products are approved for the same indications as PYRUKYND®;

significant safety, manufacturing and/or quality risks are identified;

PYRUKYND®  fails  to  gain  and/or  maintain  sufficient  market  acceptance  by  physicians,  patients,  healthcare  payors  and  others  in  the  medical
community;

a  significant  number  of  eligible  patients  with  PK  deficiency  are  not  prescribed  PYRUKYND®  and,  if  they  are,  such  patients  do  not  stay  on
treatment; or

PYRUKYND®  does  not  demonstrate  acceptable  safety  and  efficacy  in  current  or  future  clinical  trials,  or  otherwise  does  not  meet  applicable
regulatory standards for approval in other indications.

If we experience significant delays or an inability to successfully develop and commercialize PYRUKYND® our business would be materially harmed.

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We depend heavily on the success of our clinical-stage product candidates, including the potential approval of PYRUKYND® for use in indications
other than PK deficiency and in other jurisdictions. Clinical trials of our product candidates may not be successful for a number of important reasons.
If  we  or  our  collaborators  are  unable  to  commercialize  our  product  candidates  or  experience  significant  delays  in  doing  so,  our  business  will  be
materially harmed.

We have invested a significant portion of our efforts and financial resources in the identification of our product candidates and the development of our most
advanced clinical programs, including PYRUKYND®. Our ability to generate meaningful product revenue will depend heavily on the successful clinical
development and eventual commercialization of our current and any future product candidates, including PYRUKYND®. While we obtained marketing
approval  of  PYRUKYND®  for  the  treatment  of  hemolytic  anemia  in  adults  with  PK  deficiency  in  the  United  States  and  marketing  authorization  of
PYRUKYND® for the treatment of adults with PK deficiency in the EU and Great Britain, we cannot be certain that we will obtain marketing approval of
PYRUKYND® in indications other than PK deficiency or in other jurisdictions.

We,  and  any  collaborators,  are  not  permitted  to  commercialize,  market,  promote  or  sell  any  product  candidate  in  the  United  States  without  obtaining
marketing approval from the FDA. Foreign regulatory authorities, such as the EMA, impose similar requirements in foreign jurisdictions. Before obtaining
marketing  approval  from  regulatory  authorities  for  the  sale  of  our  product  candidates,  we  must  complete  preclinical  development  and  then  conduct
extensive clinical trials to demonstrate the safety and efficacy of our product candidates in humans.

Clinical testing is expensive, difficult to design and implement, can take many years to complete and is uncertain as to outcome. We cannot guarantee that
any clinical trials will be conducted as planned or completed on schedule, if at all. The clinical development of our product candidates is susceptible to the
risk of failure inherent at any stage of product development. Moreover, we, or any collaborators, may experience any of a number of possible unforeseen
adverse events in connection with clinical trials, many of which are beyond our control, including:

• we, or our collaborators, may fail to demonstrate efficacy in a clinical trial or across a broad population of patients;

•

•

•

•

•

it is possible that even if one or more of our product candidates has a beneficial effect, that effect will not be detected during clinical evaluation as
a  result  of  one  or  more  of  a  variety  of  factors,  including  the  size,  duration,  design,  measurements,  conduct  or  analysis  of  our  clinical  trials.
Conversely, as a result of the same factors, our clinical trials may indicate an apparent positive effect of a product candidate that is greater than the
actual positive effect, if any. For example, many compounds that initially showed promise in earlier stage testing for treating specific indications
have later been found to cause side effects that prevented further development of the compound;

our  product  candidates  may  have  undesirable  side  effects  or  other  unexpected  characteristics  or  otherwise  expose  participants  to  unacceptable
health risks, causing us, our collaborators or our investigators, regulators or institutional review boards or the data safety monitoring board for
such trial to halt, delay, interrupt, suspend or terminate the trials or cause us, or any collaborators, to abandon development or limit development of
that product candidate to certain uses or subpopulations in which the undesirable side effects or other characteristics are less prevalent, less severe
or more acceptable from a risk-benefit perspective;

if  our  product  candidates  have  undesirable  side  effects,  it  could  result  in  a  more  restrictive  label,  or  it  could  result  in  the  delay  or  denial  of
marketing approval by the FDA or comparable foreign regulatory authorities;

clinical trials of our product candidates may produce negative or inconclusive results, and we, or our collaborators, may decide, or regulators may
require us, to conduct additional clinical trials, including testing in more subjects, or abandon product development programs;

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

• we or our collaborators may have delays in reaching or fail to reach agreement on acceptable clinical trial contracts or clinical trial protocols with

prospective trial sites;

•

•

•

•

the number of patients required for clinical trials of our product candidates may be larger than we anticipate; enrollment in these clinical trials,
which may be particularly challenging for some of the orphan diseases we target in our rare disease programs, may be slower than we anticipate;
or participants may drop out of these clinical trials at a higher rate than we anticipate;

third-party contractors used by us or our collaborators may fail to comply with regulatory requirements or meet their contractual obligations in a
timely manner, or at all;

significant preclinical study or clinical trial delays could shorten any periods during which we, or any collaborators, may have the exclusive right
to commercialize our product candidates or allow our competitors, or the competitors of any collaborators, to bring products to market before we,
or any collaborators, do;

the cost of clinical trials of our product candidates may be greater than anticipated; and

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•

the supply or quality of our product candidates or other materials necessary to conduct clinical trials of our product candidates may be insufficient
or inadequate.

In December 2016, we withdrew our IND for AG-519, our second PK activator, following verbal notification of a clinical hold from the FDA relating to a
previously disclosed case of drug-induced cholestatic hepatitis which occurred in our phase 1 clinical trial of AG-519 in healthy volunteers. Although these
decisions and this hepatic adverse event finding do not affect our ongoing clinical trials for PYRUKYND®, our first PK activator, we cannot provide any
assurances  that  there  will  not  be  other  treatment-related  severe  adverse  events  in  our  other  clinical  trials,  or  that  our  other  trials  will  not  be  placed  on
clinical hold in the future.

Our  failure  to  successfully  begin  and  complete  clinical  trials  of  our  product  candidates  and  to  demonstrate  the  efficacy  and  safety  necessary  to  obtain
regulatory approval to market any of our product candidates could result in additional costs to us, or any collaborators, would impair our ability to generate
revenue from product sales, regulatory and commercialization milestones and royalties and would significantly harm our business.

We may engage in in-licensing transactions or acquisitions that could disrupt our business, cause dilution to our stockholders or reduce our financial
resources.

We have and may in the future enter into additional transactions to in-license products, technologies or assets or to acquire other products, technologies,
assets or businesses. As part of the evolution of our research organization, we plan to prioritize in-licensing or acquiring assets for future pipeline growth.
For  example,  in  July  2023,  we  entered  into  a  license  agreement  with  Alnylam  for  the  development  and  commercialization  of  products  containing  or
comprised  of  an  siRNA  development  candidate  discovered  by  Alnylam  and  targeting  the  TMPRSS6  gene,  and  we  intend  to  pursue  development  of  a
licensed product for the potential treatment of PV.

Our ability to successfully in-license or acquire assets and develop product candidates following such transactions is unproven. If we do identify additional
suitable candidates or assets for in-licensing transactions or acquisitions, we may not be able to make such transactions on favorable terms, or at all. Such
transactions may require us to relinquish rights to develop product candidates in certain indications, limit our ability to pursue certain targets or require us
to make significant milestone or royalty payments to third parties upon achievement of certain events. For example, we are responsible to pay up to $130.0
million in potential development and regulatory milestones, in addition to sales milestones as well as tiered royalties on annual net sales, if any, of any
licensed products, under the license agreement with Alnylam. Further, any in-licensing transaction or acquisitions we undertake may not strengthen our
competitive  position,  and  these  transactions  may  be  viewed  negatively  by  customers  or  investors.  We  may  decide  to  incur  debt  in  connection  with  an
acquisition or an in-licensing transaction or issue our common stock or other equity securities to the stockholders of the counterparty, which would reduce
the percentage ownership of our existing stockholders. We could incur losses resulting from undiscovered liabilities of the acquired business, product or
technology that are not covered by the indemnification we may obtain from the seller. In addition, we may not be able to successfully integrate the acquired
personnel,  technologies  and  operations  into  our  existing  business  in  an  effective,  timely  and  non-disruptive  manner.  Such  transactions  may  also  divert
management  attention  from  day-to-day  responsibilities,  increase  our  expenses  and  reduce  our  cash  available  for  operations  and  other  uses.  We  cannot
ensure that following any transaction we would achieve the expected synergies to justify the transactions. We cannot predict the number, timing or size of
future transactions or the effect that any such transactions might have on our operating results.

Public health epidemics or pandemics may affect our ability to initiate or continue our planned, ongoing and future preclinical studies and clinical
trials,  disrupt  regulatory  activities,  disrupt  our  ability  to  maintain  a  commercial  infrastructure  for  our  product  or  have  other  adverse  effects  on  our
business and operations.

Public health emergencies or pandemics could adversely affect our business, financial condition, results of operations, and prospects. We may face delays,
disruptions or shortages as a result of such pandemics that may affect our ability to initiate and complete preclinical studies and clinical trials or impact our
commercialization efforts. We have experienced disruptions to certain clinical and research activities at our contract research organizations, or CROs, due
to the recent COVID-19 pandemic. Any future pandemic or public health emergency could result in site initiation, participant recruitment and enrollment,
participant  dosing,  distribution  of  clinical  trial  materials,  study  monitoring  and  data  analysis  being  paused  or  delayed  due  to  changes  in  hospital  or
university policies, federal, state or local regulations, diversion of hospital resources or other reasons related to a public health emergency. If a pandemic or
public health emergency arises in the future, we may face difficulties recruiting or retaining patients in our ongoing clinical trials, and patients enrolled in
our clinical trials may be unable or unwilling to visit clinical trial sites which may impact the collection of important clinical trial data and may necessitate
remote data verification. In addition, limitations on the ability to visit sites may affect our enrollment timelines for our clinical trials, and may adversely
affect  the  timing  of  completion  of  our  clinical  trials  or  our  ability  to  complete  clinical  trials  in  a  fully  compliant  manner.  Additionally,  the  potential
suspension of clinical trial activity at clinical trial sites or reduced availability of CRO personnel may have an adverse impact on our clinical trial plans and
timelines.

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The  public  health  emergency  declarations  related  to  COVID-19  ended  on  May  11,  2023.  The  FDA  ended  a  number  of  COVID-19  related  policies  and
retained a number of COVID-19 related policies. It is unclear how, if at all, these developments will impact our efforts to develop and commercialize our
product candidates.

We cannot be certain what the overall impact of future health emergencies or pandemics will be on our business.

If we experience delays or difficulties in the enrollment of patients in clinical trials, our receipt of necessary regulatory approvals could be delayed or
prevented.

We or our collaborators may not be able to initiate, continue or complete clinical trials for our product candidates if we or they are unable to locate and
enroll a sufficient number of eligible patients to participate in these trials as required by the FDA or analogous regulatory authorities outside the United
States. Furthermore, enrollment had previously been particularly challenging in light of the recent COVID-19 pandemic.

Patient enrollment is also affected by other factors including:

•

•

•

•

•

•

•

•

prevalence and severity of the disease under investigation;

availability and efficacy of approved medications for the disease under investigation;

eligibility criteria for the study in question;

perceived risks and benefits of the product candidate under study;

efforts to facilitate timely enrollment in clinical trials;

patient referral practices of physicians;

the ability to monitor patients adequately during and after treatment; and

proximity and availability of clinical trial sites for prospective patients.

Utilizing  our  precision  medicine  approach,  we  generally  focus  our  development  activities  on  genetically  or  biomarker  defined  patients  most  likely  to
respond to our therapies. As a result, the potential patient populations for our clinical trials are narrowed, and we may experience difficulties in identifying
and enrolling a sufficient number of patients in our clinical trials.

In December 2022, with the passage of the Food and Drug Omnibus Reform Act, Congress required sponsors to develop and submit a diversity action plan
for each phase 3 clinical trial or any other "pivotal study" of a new drug product. These plans are meant to encourage enrollment of more diverse patient
populations in late-stage clinical trials of FDA-regulated products. If we are not able to adhere to these new requirements, our ability to conduct clinical
trials may be delayed or halted.

In addition, some of our competitors may have ongoing or planned clinical trials for product candidates that would treat the same indications as our product
candidates, and patients who would otherwise be eligible for our clinical trials may instead enroll in clinical trials of our competitors’ product candidates.
For example, Rocket Pharma is developing a gene therapy targeting PK deficiency; Novo Nordisk is developing molecules for the treatment of alpha and
beta thalassemia, SCD and LR MDS; Pfizer is developing molecules for the treatment of SCD; Fulcrum Therapeutics Inc., or Fulcrum, is developing a
treatment for SCD; Geron Corporation, or Geron, is developing imetelstat for the treatment of LR MDS (for which they have a Prescription Drug User Fee
Act goal date of June 16, 2024 for their new drug application); Keros Therapeutics, or Keros, is developing KER-050 for the treatment of anemia in LR
MDS; PTC Therapeutics, Inc., or PTC, and Jnana Therapeutics, Inc., or Jnana, and Homology Medicines Inc., or Homology, are developing therapies to
treat PKU; and Protagonist Therapeutics, or Protagonist, Ionis Pharmaceuticals, Inc., or Ionis, Silence Therapeutics, or Silence, and Merck are developing
therapies to treat PV. Competition for eligible patients may make it particularly difficult for us to enroll a sufficient number of patients to complete our
clinical trials for our product candidates in a timely and cost-effective manner.

In  addition,  we  have  a  small  number  of  clinical  trial  sites  for  certain  clinical  trials  in  the  Middle  East,  including  in  Lebanon  and  Israel,  that  could  be
affected by the current armed conflict in Israel and the Gaza Strip.

We  rely  on  CROs  and  clinical  trial  sites  to  ensure  the  proper  and  timely  conduct  of  our  clinical  trials  and  while  we  have  agreements  governing  their
committed activities, we have limited influence over their actual performance. Our or our collaborators’ inability to enroll a sufficient number of patients
for  our  clinical  trials  would  result  in  significant  delays  or  may  require  us  to  abandon  one  or  more  clinical  trials  altogether,  or  result  in  increased
development costs for our product candidates, which would cause the value of our company to decline and limit our ability to obtain additional financing.

Results of preclinical studies and early clinical trials may not be predictive of results of later-stage clinical trials.

The outcome of preclinical studies and early clinical trials may not be predictive of the success of later clinical trials, and interim results of clinical trials do
not necessarily predict success in future clinical trials. Many companies in the pharmaceutical

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and biotechnology industries have suffered significant setbacks in late-stage clinical trials after achieving positive results in earlier stages of development,
and we could face similar setbacks. The design of a clinical trial can determine whether its results will support approval of a product and flaws in the design
of a clinical trial may not become apparent until the clinical trial is well advanced. In addition, preclinical and clinical data are often susceptible to varying
interpretations and analyses. Many companies that believed their product candidates performed satisfactorily in preclinical studies and clinical trials have
nonetheless failed to obtain marketing approval for the product candidates. Even if we, or any collaborators, believe that the results of clinical trials for our
product candidates warrant marketing approval, the FDA or comparable foreign regulatory authorities may disagree and may not grant marketing approval
of our product candidates.

In  some  instances,  there  can  be  significant  variability  in  safety  or  efficacy  results  between  different  clinical  trials  of  the  same  product  candidate  due  to
numerous factors, including changes in trial procedures set forth in protocols, differences in the size and type of the patient populations, changes in and
adherence to the dosing regimen and other clinical trial protocols and the rate of dropout among clinical trial participants. While we obtained marketing
approval  of  PYRUKYND®  for  the  treatment  of  hemolytic  anemia  in  adults  with  PK  deficiency  in  the  United  States  and  marketing  authorization  of
PYRUKYND® for the treatment of adults with PK deficiency in the EU and Great Britain, we cannot be certain that we will obtain marketing approval of
PYRUKYND® in other indications. The results of clinical trials of PYRUKYND® for the treatment of PK deficiency do not predict that PYRUKYND®
will be efficacious in our ongoing clinical trials in other indications, such as thalassemia or SCD. If we fail to receive positive results in clinical trials of our
product  candidates,  the  development  timeline  and  regulatory  approval  and  commercialization  prospects  for  our  most  advanced  product  candidates,  and,
correspondingly, our business and financial prospects would be negatively impacted.

We may expend our limited resources to pursue a particular product candidate or indication and fail to capitalize on product candidates or indications
that may be more profitable or for which there is a greater likelihood of success.

Because  we  have  limited  financial  and  managerial  resources,  we  focus  on  research  programs  and  product  candidates  that  we  identify  for  specific
indications.  As  a  result,  we  may  forego  or  delay  pursuit  of  opportunities  with  other  product  candidates  or  for  other  indications  that  later  prove  to  have
greater commercial potential. We have decided to evolve our approach to exploratory research and drug discovery to prioritize investment in advancing our
late lead-optimization research, while continuing to progress our registration-enabling clinical programs in thalassemia, SCD and pediatric PK deficiency,
our phase 2a trial in LR MDS, our IND-enabling studies for AG-181, our PAH stabilizer for the potential treatment of PKU, and our development of a
licensed siRNA development candidate under our license agreement with Alnylam. Our resource allocation decisions may cause us to fail to capitalize on
viable  commercial  medicines  or  profitable  market  opportunities.  Our  spending  on  current  and  future  research  and  development  programs  and  product
candidates for specific indications may not yield any commercially viable medicines. If we do not accurately evaluate the commercial potential or target
market  for  a  particular  product  candidate,  we  may  relinquish  valuable  rights  to  that  product  candidate  through  collaboration,  licensing  or  other  royalty
arrangements  in  cases  in  which  it  would  have  been  more  advantageous  for  us  to  retain  sole  development  and  commercialization  rights  to  such  product
candidate.

We  or  others  may  later  discover  that  PYRUKYND®,  or  any  of  our  product  candidates  that  may  receive  marketing  approval  in  the  future,  is  less
effective than previously believed or causes undesirable side effects that were not previously identified, which could compromise our ability, or that of
any collaborators, to market the product.

It is possible that our clinical trials, or those of any collaborators, may indicate an apparent positive effect of a product candidate that is greater than the
actual  positive  effect,  if  any,  or  alternatively  fail  to  identify  undesirable  side  effects.  If,  following  approval  of  a  product  candidate,  including
PYRUKYND®, we, or others, discover that the product is less effective than previously believed or causes undesirable side effects that were not previously
identified, any of the following adverse events could occur:

•

regulatory authorities may withdraw their approval of the product or seize the product;

• we, or any collaborators, may be required to recall the product, change the way the product is administered or conduct additional clinical trials;

•

additional restrictions may be imposed on the marketing of, or the manufacturing processes for, the particular product;

• we may be subject to fines, injunctions or the imposition of civil or criminal penalties;

•

regulatory authorities may require the addition of labeling statements;

• we,  or  any  collaborators,  may  be  required  to  create  a  Medication  Guide  outlining  the  risks  of  the  previously  unidentified  side  effects  for

distribution to patients;

• we, or any collaborators, could be sued and held liable for harm caused to patients;

•

•

the product may become less competitive; and

our reputation may suffer.

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PYRUKYND®,  or  any  of  our  product  candidates  that  may  receive  marketing  approval  in  the  future,  may  fail  to  achieve  the  degree  of  market
acceptance by physicians, patients, healthcare payors and others in the medical community necessary for commercial success.

PYRUKYND®, or any of our product candidates that may receive marketing approval in the future, may fail to gain and/or maintain sufficient market
acceptance by physicians, patients, healthcare payors and others in the medical community. If PYRUKYND® or any of our product candidates that may
receive  marketing  approval  do  not  achieve  an  adequate  level  of  acceptance,  we  may  not  generate  significant  product  revenue  and  we  may  not  become
profitable.  The  degree  of  market  acceptance  of  PYRUKYND®  and  any  of  our  product  candidates,  if  approved  for  commercial  sale,  will  depend  on  a
number of factors, including:

•

•

•

•

•

•

•

•

efficacy and potential advantages compared to alternative treatments;

the ability to offer our medicines for sale at competitive prices;

convenience and ease of administration compared to alternative treatments;

the willingness of the target patient population to try new therapies and of physicians to prescribe these therapies;

ensuring uninterrupted product supply;

the strength of marketing and distribution support;

sufficient third-party coverage or reimbursement; and

the prevalence and severity of any side effects.

If we are unable to maintain sales and marketing capabilities or enter into agreements with third parties to sell and market our product candidates, we
may not be successful in commercializing PYRUKYND® or any of our product candidates if they are approved.

We have limited experience in the sale, marketing or distribution of pharmaceutical products. To achieve commercial success for approved medicines for
which we retain sales and marketing responsibilities, we must either develop a sales and marketing organization or outsource these functions to other third
parties. We have established sales and marketing capabilities to support our commercial launch of PYRUKYND® for the treatment of hemolytic anemia in
adults  with  PK  deficiency  in  the  United  States.  In  addition,  in  connection  with  our  regulatory  approvals  in  the  EU  and  Great  Britain,  we  are  currently
providing access to PYRUKYND® free of charge for eligible patients in those jurisdictions through a global managed access program. We may provide
access to PYRUKYND® for adult patients with PK deficiency in other jurisdictions upon request through the global managed access program, on either a
free  of  charge  or  for  charge  basis.  We  may  need  to  further  build  our  sales  and  marketing  infrastructure,  either  directly  or  with  third-party  partners,  to
maintain  our  ongoing  commercialization  efforts  and  to  commercialize  PYRUKYND®  in  other  indications  or  outside  of  the  United  States  or  to
commercialize any of our other product candidates for which we obtain marketing approval.

There are risks involved with both establishing our own sales and marketing capabilities and entering into arrangements with third parties to perform these
services. For example, recruiting and training a sales force is expensive and time consuming and could delay any product launch. If the commercial launch
of a product candidate for which we recruit a sales force and establish marketing capabilities is delayed or does not occur for any reason, we would have
prematurely  or  unnecessarily  incurred  these  commercialization  expenses.  This  may  be  costly,  and  our  investment  would  be  lost  if  we  cannot  retain  or
reposition our sales and marketing personnel.

Factors that may inhibit our efforts to commercialize our medicines on our own include:

•

•

•

•

our inability to recruit and retain adequate numbers of effective sales and marketing personnel;

the inability of sales personnel to obtain access to physicians or persuade adequate numbers of physicians to prescribe any future medicines;

the lack of complementary medicines to be offered by sales personnel, which may put us at a competitive disadvantage relative to companies with
more extensive product lines; and

unforeseen costs and expenses associated with creating an independent sales and marketing organization.

If we enter into arrangements with third parties to perform sales, marketing and distribution services, our product revenue or the profitability of product
revenue to us are likely to be lower than if we were to market and sell any medicines that we develop ourselves. In addition, we may not be successful in
entering into arrangements with third parties to sell and market our product candidates or may be unable to do so on terms that are favorable to us. We
likely will have little control over such third parties,

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and  any  of  them  may  fail  to  devote  the  necessary  resources  and  attention  to  sell  and  market  our  medicines  effectively.  If  we  do  not  establish  sales  and
marketing capabilities successfully, either on our own or in collaboration with third parties, we will not be successful in commercializing PYRUKYND®
or any of our product candidates for which we obtain marketing approval.

We provide certain development estimates related to the development of PYRUKYND® and our product candidates. If we do not achieve our projected
development estimates in the timeframes we announce and expect, the commercialization of our products may be delayed and, as a result, our stock
price may decline.

From time to time, we provide estimates related to the development of PYRUKYND® and our product candidates . We also estimate the timing of the
anticipated accomplishment of various scientific, preclinical, clinical, regulatory and other product development goals. These estimates may include the
commencement  or  completion  of  clinical  trials  and  the  submission  of  regulatory  filings.  From  time  to  time,  we  may  publicly  announce  our  estimates,
including the timing of certain milestones related to our product candidates. All of these estimates are and will be based on numerous assumptions. The
actual  results  and  timing  of  our  preclinical  and  clinical  trials  can  vary  dramatically  compared  to  our  estimates,  in  some  cases  for  reasons  beyond  our
control. If our estimates change or we do not meet the timing of our estimates as publicly announced, or at all, the commercialization of our products may
be delayed or never achieved and, as a result, our stock price may decline.

We face substantial competition, which may result in others discovering, developing or commercializing products before or more successfully than we
do.

We  face  competition  with  respect  to  PYRUKYND®  and  our  current  product  candidates,  and  we  will  face  competition  with  respect  to  any  product
candidates  that  we  may  seek  to  develop  or  commercialize  in  the  future.  Potential  competitors  may  include  major  pharmaceutical  companies,  specialty
pharmaceutical companies, biotechnology companies, academic institutions, government agencies and other public and private research organizations that
conduct research, seek patent protection and establish collaborative arrangements for research, development, manufacturing and commercialization. There
are a number of large pharmaceutical and biotechnology companies that currently market and sell products or are pursuing the development of products for
the treatment of the indications for which we are developing our product or our product candidates, such as PK deficiency, thalassemia, SCD, LR MDS,
PKU, and PV. For example, Merck and Bristol-Myers Squibb Company, or BMS, are marketing a therapy to treat beta thalassemia and LR MDS and are
conducting  clinical  trials  for  alpha  thalassemia  and  LR  MDS  patients  that  are  ESA  naïve  and  non-transfusion  dependent;  Novartis  International  AG,  or
Novartis, Emmaus Life Sciences, and Pfizer are each marketing therapies to treat SCD, with Pfizer continuing to conduct clinical trials for therapies in
SCD; BioMarin is marketing and conducting clinical trials for therapies to treat PKU; Novo is conducting clinical trials for the treatment of alpha and beta
thalassemia, SCD and LR MDS; bluebird is marketing a gene therapy to treat transfusion-dependent beta-thalassemia and SCD; Vertex, with CRISPR, is
marketing  a  gene  therapy  targeting  SCD  and  transfusion-dependent  beta-thalassemia;  Fulcrum  is  conducting  clinical  trials  for  a  potential  treatment  for
SCD; Geron and Keros are conducting clinical trials for potential treatments for LR MDS (for which Geron has a Prescription Drug User Fee Act goal date
of June 16, 2024 for their new drug application); PTC, Jnana and Homology are conducting clinical trials for potential treatments for PKU; PharmaEssentia
Corp,  or  PharmaEssentia,  and  Incyte  Corporation,  or  Incyte,  are  marketing  therapies  to  treat  PV,  with  Protagonist,  Ionis,  and  Silence  are  developing
therapies to treat PV; and a number of other biotechnology companies have product candidates in clinical development in similar indications as ours.

There are a variety of treatment options available, including a number of marketed ERTs, for treating patients with rare diseases. In addition to currently
marketed therapies, there are also a number of products that are either ERTs, gene therapies or PK activators in various stages of clinical development to
treat rare diseases. These products in development may provide efficacy, safety, convenience and other benefits that are not provided by currently marketed
therapies or for which there are no approved treatments. As a result, they may provide significant competition for any of our product candidates for which
we obtain marketing approval.

There are also a number of product candidates in preclinical or clinical development by third parties to treat rare diseases by targeting similar mechanisms
of action or target indications as our product candidates. These companies include large pharmaceutical companies, such as Novartis, Novo Nordisk, Pfizer,
BMS, Merck and Vertex as well as biotechnology companies of various sizes, such as BioMarin, bluebird, PTC and Rocket Pharma.

Our competitors may develop products that are more effective, safer, more convenient or less costly than PYRUKYND® or any product candidates that we
are  developing  or  that  would  render  PYRUKYND®  or  our  product  candidates  obsolete  or  non-competitive.  In  addition,  our  competitors  may  discover
biomarkers  that  more  efficiently  measure  metabolic  pathways  than  our  methods,  which  may  give  them  a  competitive  advantage  in  developing  potential
products. Our competitors may also obtain marketing approval from the FDA or other regulatory authorities 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  our  competitors  have  significantly  greater  financial  resources  and  expertise  in  research  and  development,  manufacturing,  preclinical  testing,
conducting clinical trials, obtaining regulatory approvals and globally marketing approved

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

If the FDA does not grant our products, if and when approved, appropriate periods of data exclusivity before approving generic or follow-on versions
of our products, the sales of our products could be adversely affected.

With FDA approval of an NDA, the product covered by the application is specified as a “reference-listed drug” in the FDA’s publication, “Approved Drug
Products with Therapeutic Equivalence Evaluations,” or the Orange Book. Manufacturers may seek approval of generic versions of reference-listed drugs
through submission of abbreviated new drug applications, or ANDAs, in the United States.

In support of an ANDA, a generic manufacturer need not conduct clinical trials. Rather, the sponsor generally must show that its product has the same
active ingredient(s), dosage form, strength, route of administration and conditions of use or labeling as the reference-listed drug and that the generic version
is  bioequivalent  to  the  reference-listed  drug,  meaning  it  is  absorbed  in  the  body  at  the  same  rate  and  to  the  same  extent.  Generic  products  may  be
significantly less costly to bring to market than the reference-listed drug and companies that produce generic products are generally able to offer them at
lower prices. Thus, following the introduction of a generic drug, a significant percentage of the sales of any reference-listed drug may be typically lost to
the generic product.

A manufacturer may also submit an NDA under section 505(b)(2) of the Federal Food, Drug and Cosmetic Act, or FDCA, that references the FDA’s prior
approval of the innovator product or preclinical studies and/or clinical trials that were not conducted by, or for, the sponsor and for which the sponsor has
not obtained a right of reference. A 505(b)(2) NDA product, or follow-product, may be for a new or improved version of the original reference listed drug.

The FDA may not approve an ANDA or 505(b)(2) NDA until any applicable period of non-patent exclusivity for the reference-listed drug has expired. The
FDCA provides a period of five years of new chemical entity exclusivity for a new drug containing a new active moiety. Specifically, in cases where such
exclusivity  has  been  granted,  an  ANDA  or  a  505(b)(2)  NDA  may  not  be  filed  with  the  FDA  until  the  expiration  of  five  years  unless  the  submission  is
accompanied by a Paragraph IV certification that a patent covering the reference-listed drug is either invalid or will not be infringed by the generic product,
in which case the sponsor may submit its application four years following approval of the reference-listed drug. The FDCA also provides a period of three
years of new clinical investigation data exclusivity in connection with the approval of a supplemental indication for the product for which a clinical trial is
deemed by the FDA as essential for approval.

In the event that a generic or follow-on manufacturer is somehow able to obtain FDA approval without adherence to these periods of data exclusivity, the
competition that our approved products may face from generic and follow-on versions could negatively impact our future revenue, profitability and cash
flows and substantially limit our ability to obtain a return on our investments in those product candidates.

In addition, if there are patents listed for our drug products in the Orange Book, ANDAs and 505(b)(2) NDAs would be required to include a certification
as to each listed patent indicating whether the sponsor intends to challenge the patent. We cannot predict which, if any, patents in our current portfolio or
patents we may obtain in the future will be eligible for listing in the Orange Book, how any generic or follow-on competitor would address such patents,
whether we would sue on any such patents or the outcome of any such suit.

Product  liability  lawsuits  against  us  or  any  collaborators  could  cause  us  or  our  collaborators  to  incur  substantial  liabilities  and  could  limit
commercialization of any medicines that we or they may develop.

We and any collaborators face a risk of product liability exposure related to our product candidates in human clinical trials and face an even greater risk as
we  or  they  commercially  sell  any  medicines,  including  PYRUKYND®.  If  we  or  any  collaborators  cannot  successfully  defend  ourselves  or  themselves
against  claims  that  our  product  candidates  or  medicines  caused  injuries,  we  or  they  could  incur  substantial  costs  and  liabilities.  Regardless  of  merit  or
eventual outcome, liability claims may also result in, among other things, decreased demand for any product candidates or medicines that we may develop,
reputational harm and lost revenue.

Although we maintain product liability insurance coverage, it may not be adequate to cover all liabilities that we may incur.

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Our internal information technology systems, or those of any third parties with which we contract, may fail or suffer security breaches, loss of data or
other disruptions which could result in a material disruption of our product development programs, compromise sensitive information related to our
business or prevent us from accessing critical information, trigger legal obligations, potentially exposing us to liability, competitive or reputational
harm or otherwise adversely affecting our business and financial results.

Despite  the  implementation  of  security  measures,  our  internal  information  technology  systems  and  those  of  third  parties  with  which  we  contract  are
vulnerable to damage from computer viruses, worms and other destructive or disruptive software, unauthorized access, natural disasters, terrorism, war and
telecommunication and electrical failures. Such systems are also vulnerable to service interruptions or to security breaches from inadvertent or intentional
actions  by  our  employees,  third-party  vendors  and/or  business  partners,  or  from  cyber  incidents  by  malicious  third  parties.  Cybersecurity  incidents  are
increasing  in  their  frequency,  sophistication  and  intensity,  and  have  become  increasingly  difficult  to  detect.  Cybersecurity  incidents  could  include  the
deployment of harmful malware, ransomware, denial-of-service attacks, unauthorized access to or deletion of files, social engineering and other means to
affect  service  reliability  and  threaten  the  confidentiality,  integrity  and  availability  of  information.  Cybersecurity  incidents  also  could  include  phishing
attempts  or  e-mail  fraud  to  cause  payments  or  information  to  be  transmitted  to  an  unintended  recipient.  Attackers  may  use  artificial  intelligence  and
machine  learning  to  launch  more  automated,  targeted  and  coordinated  attacks  against  targets.  We  could  be  subject  to  risks  caused  by  misappropriation,
misuse,  leakage,  falsification  or  intentional  or  accidental  release  or  loss  of  information  maintained  in  the  information  systems  and  networks  of  our
company,  including  personal  information  of  our  employees.  We  may  not  be  able  to  anticipate  all  types  of  security  threats,  and  we  may  not  be  able  to
implement  preventive  measures  effective  against  all  such  security  threats.  The  techniques  used  by  cyber  criminals  change  frequently,  may  not  be
recognized until launched, and can originate from a wide variety of sources, including outside groups such as external service providers, organized crime
affiliates, terrorist organizations or hostile foreign governments or agencies.

System failures, accidents, cybersecurity incidents or security breaches could cause interruptions in our operations, and could result in a material disruption
of our clinical and commercialization activities and business operations, whether due to a loss of our trade secrets or other proprietary information or other
similar  disruptions,  in  addition  to  possibly  requiring  substantial  expenditures  of  resources  to  remedy.  For  example,  the  loss  of  clinical  trial  data  from
completed or future trials could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the data. To
the extent that any disruption or security breach were to result in a loss of, or damage to, our data or applications, or inappropriate disclosure of confidential
or  proprietary  information,  we  could  incur  liability,  our  competitive  position  could  be  harmed  and  our  product  research,  development  and
commercialization efforts could be delayed. In addition, we may not have adequate insurance coverage to provide compensation for any losses associated
with such events.

If a material breach of our security or that of our vendors occurs, the market perception of the effectiveness of our security measures could be harmed, and,
as a result, we could lose business and our reputation and credibility could be damaged. We could be required to expend significant amounts of money and
other  resources  to  repair  or  replace  information  systems  or  networks.  Although  we  develop  and  maintain  processes,  systems  and  controls  designed  to
prevent these events from occurring, and we have a process to assess, identify and manage threats, the development and maintenance of these systems,
controls and processes is costly and requires ongoing monitoring and updating as technologies change and efforts to overcome security measures become
more  sophisticated.  Moreover,  despite  our  efforts,  the  possibility  of  these  events  occurring  cannot  be  eliminated  entirely.  We  cannot  guarantee  that  the
measures we have taken to date, and actions we may take in the future, will be sufficient to prevent any cyber-attacks or security breaches.

We are subject to stringent privacy laws, information security laws, regulations, policies and contractual obligations related to data privacy and security
and changes in such laws, regulations, policies, contractual obligations and failure to comply with such requirements could subject us to significant
fines and penalties, which may have a material adverse effect on our business, financial condition or results of operations.

We  are  subject  to  data  privacy  and  protection  laws  and  regulations  that  apply  to  the  collection,  transmission,  storage  and  use  of  personally-identifying
information, which among other things, impose certain requirements relating to the privacy, security and transmission of personal information, including
comprehensive regulatory systems in the United States, EU and United Kingdom. The legislative and regulatory landscape for privacy and data protection
continues to evolve in jurisdictions worldwide, and there has been an increasing focus on privacy and data protection issues with the potential to affect our
business. Failure to comply with any of these laws and regulations could result in enforcement action against us, including fines, imprisonment of company
officials and public censure, claims for damages by affected individuals, damage to our reputation and loss of goodwill, any of which could have a material
adverse effect on our business, financial condition, results of operations or prospects.

There  are  numerous  U.S.  federal  and  state  laws  and  regulations  related  to  the  privacy  and  security  of  personal  information.  In  particular,  regulations
promulgated pursuant to HIPAA establish privacy and security standards that limit the use and disclosure

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of  individually  identifiable  health  information,  or  protected  health  information,  and  require  the  implementation  of  administrative,  physical  and
technological  safeguards  to  protect  the  privacy  of  protected  health  information  and  ensure  the  confidentiality,  integrity  and  availability  of  electronic
protected health information. Determining whether protected health information has been handled in compliance with applicable privacy standards and our
contractual obligations can be complex and may be subject to changing interpretation. These obligations may be applicable to some or all of our business
activities now or in the future.

If we are unable to properly protect the privacy and security of protected health information, we could be found to have breached our contracts. Further, if
we fail to comply with applicable privacy laws, including applicable HIPAA privacy and security standards, we could face civil and criminal penalties.
Enforcement activity by the U.S. Department of Health & Human Services, or HHS, can result in financial liability and reputational harm, and responses to
such enforcement activity can consume significant internal resources. In addition, state attorneys general are authorized to bring civil actions seeking either
injunctions or damages in response to violations that threaten the privacy of state residents. We cannot be sure how these regulations will be interpreted,
enforced or applied to our operations. In addition to the risks associated with enforcement activities and potential contractual liabilities, our ongoing efforts
to comply with evolving laws and regulations at the federal and state level may be costly and require ongoing modifications to our policies, procedures and
systems.

In addition to potential enforcement by HHS, we are also potentially subject to privacy enforcement from the Federal Trade Commission, or FTC. The FTC
has been particularly focused on the unpermitted processing of health and genetic data through its recent enforcement actions and is expanding the types of
privacy violations that it interprets to be “unfair” under Section 5 of the FTC Act, as well as the types of activities it views to trigger the Health Breach
Notification  Rule  (which  the  FTC  also  has  the  authority  to  enforce).  The  agency  is  also  in  the  process  of  developing  rules  related  to  commercial
surveillance and data security that may impact our business. We will need to account for the FTC’s evolving rules and guidance for proper privacy and data
security practices in order to mitigate our risk for a potential enforcement action, which may be costly. If we are subject to a potential FTC enforcement
action,  we  may  be  subject  to  a  settlement  order  that  requires  us  to  adhere  to  very  specific  privacy  and  data  security  practices,  which  may  impact  our
business. We may also be required to pay fines as part of a settlement (depending on the nature of the alleged violations). If we violate any consent order
that we reach with the FTC, we may be subject to additional fines and compliance requirements.

States  are  also  active  in  creating  specific  rules  relating  to  the  processing  of  personal  information.  In  2018,  California  passed  into  law  the  California
Consumer  Privacy  Act,  or  CCPA,  which  took  effect  on  January  1,  2020  and  imposed  many  requirements  on  businesses  that  process  the  personal
information  of  California  residents.  Many  of  the  CCPA’s  requirements  are  similar  to  those  found  in  the  General  Data  Protection  Regulation,  or  GDPR,
including  requiring  businesses  to  provide  notice  to  data  subjects  regarding  the  information  collected  about  them  and  how  such  information  is  used  and
shared,  and  providing  data  subjects  the  right  to  request  access  to  such  personal  information  and,  in  certain  cases,  request  the  erasure  of  such  personal
information.  The  CCPA  also  affords  California  residents  the  right  to  opt-out  of  “sales”  of  their  personal  information.  The  CCPA  contains  significant
penalties for companies that violate its requirements. In November 2020, California voters passed a ballot initiative for the California Privacy Rights Act,
or  CPRA,  which  went  into  effect  on  January  1,  2023  and  significantly  expanded  the  CCPA  to  incorporate  additional  GDPR-like  provisions  including
requiring that the use, retention, and sharing of personal information of California residents be reasonably necessary and proportionate to the purposes of
collection or processing, granting additional protections for sensitive personal information, and requiring greater disclosures related to notice to residents
regarding  retention  of  information.  The  CPRA  also  created  a  new  enforcement  agency  –  the  California  Privacy  Protection  Agency  –  whose  sole
responsibility  is  to  enforce  the  CPRA,  which  will  further  increase  compliance  risk.  The  provisions  in  the  CPRA  may  apply  to  some  of  our  business
activities.

In addition to California, eleven other states have passed comprehensive privacy laws similar to the CCPA and CPRA. These laws are either in effect or
will  go  into  effect  sometime  before  the  end  of  2026.  Like  the  CCPA  and  CPRA,  these  laws  create  obligations  related  to  the  processing  of  personal
information, as well as special obligations for the processing of “sensitive” data (which includes health data in some cases). Some of the provisions of these
laws may apply to our business activities. There are also states that are strongly considering or are in the process of enacting privacy laws that will go into
effect in 2024 and beyond, including New Hampshire and New Jersey. Other states will be considering these laws in the future, and Congress has also been
debating passing a federal privacy law. There are also states that are specifically regulating health information that may affect our business. For example,
Washington state passed a health privacy law that will regulate the collection and sharing of health information, and the law also has a private right of
action, which further increases the relevant compliance risk. Connecticut and Nevada have also passed similar laws regulating consumer health data, and
more  states  are  considering  such  legislation  in  2024.  These  laws  may  impact  our  business  activities,  including  our  identification  of  research  subjects,
relationships with business partners and ultimately the marketing and distribution of our products.

Similar to the laws in the United States, there are significant privacy and data security laws that apply in Europe and other countries. The collection, use,
disclosure,  transfer,  or  other  processing  of  personal  data,  including  personal  health  data,  regarding  individuals  who  are  located  in  the  EEA,  and  the
processing of personal data that takes place in the EEA, is regulated

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by the GDPR, which went into effect in May 2018 and which imposes obligations on companies that operate in our industry with respect to the processing
of personal data and the cross-border transfer of such data. The GDPR imposes onerous accountability obligations requiring data controllers and processors
to maintain a record of their data processing and policies. If our or our partners’ or service providers’ privacy or data security measures fail to comply with
the GDPR requirements, we may be subject to litigation, regulatory investigations, enforcement notices requiring us to change the way we use personal
data and/or fines of up to 20 million Euros or up to 4% of the total worldwide annual turnover of the preceding financial year, whichever is higher, as well
as compensation claims by affected individuals, negative publicity, reputational harm and a potential loss of business and goodwill.

The GDPR places restrictions on the cross-border transfer of personal data from the EU to countries that have not been found by the European Commission
to offer adequate data protection legislation, such as the United States. There are ongoing concerns about the ability of companies to transfer personal data
from the EU to other countries. In July 2020, the Court of Justice of the European Union, or the CJEU, invalidated the EU-U.S. Privacy Shield, one of the
mechanisms used to legitimize the transfer of personal data from the EEA to the U.S. The CJEU decision also drew into question the long-term viability of
an  alternative  means  of  data  transfer,  the  standard  contractual  clauses,  for  transfers  of  personal  data  from  the  EEA  to  the  U.S.  This  CJEU  decision  has
resulted in increased scrutiny on data transfers generally and may increase our costs of compliance with data privacy legislation as well as our costs of
negotiating appropriate privacy and security agreements with our vendors and business partners.

Additionally,  in  October  2022,  President  Biden  signed  an  executive  order  to  implement  the  EU-U.S.  Data  Privacy  Framework,  which  would  serve  as  a
replacement to the EU-U.S. Privacy Shield. The European Commission initiated the process to adopt an adequacy decision for the EU-U.S. Data Privacy
Framework in December 2022, and the European Commission adopted the adequacy decision on July 10, 2023. The adequacy decision will permit U.S.
companies who self-certify to the EU-U.S. Data Privacy Framework to rely on it as a valid data transfer mechanism for data transfers from the EU to the
U.S.  However,  some  privacy  advocacy  groups  have  already  suggested  that  they  will  be  challenging  the  EU-U.S.  Data  Privacy  Framework.  If  these
challenges are successful, they may not only impact the EU-U.S. Data Privacy Framework, but also further limit the viability of the standard contractual
clauses and other data transfer mechanisms. The uncertainty around this issue has the potential to impact our business internationally.

Following Brexit, the UK Data Protection Act 2018 applies to the processing of personal data that takes place in the United Kingdom and includes parallel
obligations to those set forth by GDPR. In relation to data transfers, both the United Kingdom and the EU have determined, through separate “adequacy”
decisions, that data transfers between the two jurisdictions are in compliance with the UK Data Protection Act and the GDPR, respectively. The United
Kingdom and the U.S. are also in discussions to develop a US-UK “data bridge”, which would function similarly to the EU-U.S. Data Privacy Framework
and  provide  an  additional  legal  mechanism  for  companies  to  transfer  data  from  the  United  Kingdom  to  the  U.S.  In  addition  to  the  United  Kingdom,
Switzerland  is  also  in  the  process  of  approving  an  adequacy  decision  in  relation  to  the  Swiss-U.S.  Data  Privacy  Framework  (which  would  function
similarly to the EU-U.S. Data Privacy Framework and the U.S.-UK “data bridge” in relation to data transfers from Switzerland to the United States). Any
changes or updates to these developments have the potential to impact our business.

Beyond GDPR, there are privacy and data security laws in a growing number of countries around the world. While many loosely follow GDPR as a model,
other laws contain different or conflicting provisions. These laws will impact our ability to conduct our business activities, including both our clinical trials
and  the  sale  and  distribution  of  commercial  products,  through  increased  compliance  costs,  costs  associated  with  contracting  and  potential  enforcement
actions.

While we continue to address the implications of the recent changes to data privacy regulations, data privacy remains an evolving landscape at both the
domestic and international level, with new regulations coming into effect and continued legal challenges, and our efforts to comply with the evolving data
protection rules may be unsuccessful. It is possible that these laws may be interpreted and applied in a manner that is inconsistent with our practices. We
must  devote  significant  resources  to  understanding  and  complying  with  this  changing  landscape.  Failure  to  comply  with  laws  regarding  data  protection
would expose us to risk of enforcement actions taken by data protection authorities in the EEA and elsewhere and carries with it the potential for significant
penalties if we are found to be non-compliant. Similarly, failure to comply with federal and state laws in the United States regarding privacy and security of
personal  information  could  expose  us  to  penalties  under  such  laws.  Any  such  failure  to  comply  with  data  protection  and  privacy  laws  could  result  in
government-imposed  fines  or  orders  requiring  that  we  change  our  practices,  claims  for  damages  or  other  liabilities,  regulatory  investigations  and
enforcement action, litigation and significant costs for remediation, any of which could adversely affect our business. Even if we are not determined to have
violated these laws, government investigations into these issues typically require the expenditure of significant resources and generate negative publicity,
which could harm our business, financial condition, results of operations or prospects.

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Risks Related to Our Financial Position

We face new challenges as a smaller, less diversified company following the sale of our oncology business to Servier.

We developed most of our initial products and product candidates for the treatment of various types of cancer. The sale of our oncology business to Servier
in 2021, including our approved products at the time of sale, TIBSOVO® and IDHIFA®, has resulted in us being a smaller, less diversified company with a
more limited business concentrated on products and product candidates for the treatment of rare diseases. The success of the rare disease business is subject
to  various  risks  and  uncertainties,  including  the  possibility  that  we  may  not  be  able  to  successfully  commercialize  PYRUKYND®,  the  possibility  of
adverse  clinical  and  other  developments  in  respect  of  PYRUKYND®  or  our  other  product  candidates  of  the  rare  disease  business,  and  unanticipated
changes in applicable laws and regulations that may adversely affect the rare disease business.

We may be more susceptible to changing market conditions, including fluctuations and risks particular to the markets for patients with rare diseases, than a
more  diversified  company,  which  could  adversely  affect  our  business,  financial  condition  and  results  of  operations.  In  addition,  even  with  the  FDA
approval  of  PYRUKYND®,  the  diversification  of  our  revenues,  costs  and  cash  flows  has  diminished  following  the  sale  of  our  oncology  business.  Our
results  of  operations,  cash  flows,  working  capital  and  financing  requirements  may  be  subject  to  increased  volatility  and  our  ability  to  fund  capital
expenditures and investments or satisfy other financial commitments may be diminished.

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

Until  such  time,  if  ever,  as  we  can  generate  substantial  product  revenue,  including  from  sales  of  PYRUKYND®,  we  expect  to  finance  our  cash  needs
primarily through cash on hand, a potential milestone payment and royalties from Servier if a new drug application for vorasidenib is approved by the FDA
with a label that permits vorasidenib's use as a single agent for the adjuvant treatment of patients with Grade 2 glioma that have an isocitrate dehydrogenase
1 or 2 mutation, and, potentially, collaborations, strategic alliances, licensing arrangements and other nondilutive strategic transactions. In addition, we may
pursue opportunistic debt offerings, and equity or equity-linked offerings. We do not have any committed external source of funds other than the potential
milestone and royalty payments that we are eligible to receive with respect to vorasidenib under our purchase agreement with Servier. To the extent that we
raise additional capital through the sale of equity or convertible debt securities, the ownership interest 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 common stockholders. Debt financing, if available, may
require us to enter into agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, selling
or licensing our assets, making capital expenditures or declaring dividends. In addition, securing financing could require a substantial amount of time and
attention from our management and may divert a disproportionate amount of their attention away from day-to-day activities, which may adversely affect
our management’s ability to oversee the development of our product candidates.

If we raise funds through collaborations, strategic alliances or licensing arrangements with third parties, we may have to relinquish valuable rights to our
technologies, future revenue streams, research programs or product candidates or to grant licenses on terms that may not be favorable to us.

If our existing capital is insufficient to fund our operating expenses and capital expenditures, we will need to raise capital, and if we are unable to raise
capital when needed, we would be forced to delay, reduce or eliminate our product development programs or commercialization efforts.

We expect to incur significant expenses as we continue to advance our ongoing activities. Our estimate as to how long we expect our existing cash, cash
equivalents, and marketable securities to be available to fund our operating expenses and capital expenditures is based on assumptions that may prove to be
wrong, and we could use our available capital resources sooner than we currently expect. Further, changing circumstances, some of which may be beyond
our  control,  could  cause  us  to  consume  capital  significantly  faster  than  we  currently  anticipate,  and  we  may  need  to  seek  additional  funds.  Our  future
capital requirements will depend on many factors, including:

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the amount and timing of future revenue received from commercial sales of PYRUKYND® and any of our other product candidates for which we
may receive marketing approval;

the amount of contingent consideration we ultimately receive from Servier;

the  costs  and  timing  of  our  ongoing  commercialization  activities,  including  product  manufacturing,  sales,  marketing  and  distribution,  for
PYRUKYND® for the treatment of adults with PK deficiency in the approved jurisdictions;

the anticipated cost-savings associated with the evolution of our research organization;

the scope, progress, results and costs of preclinical development, laboratory testing and clinical trials for our product candidates;

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the  costs  associated  with  in-licensing  or  acquiring  assets  for  pipeline  growth,  including  the  amount  and  timing  of  future  milestone  and  royalty
payments payable to Alnylam pursuant to the license agreement;

the costs, timing and outcome of regulatory review of our product candidates;

the  costs  of  preparing,  filing  and  prosecuting  patent  applications,  maintaining  and  enforcing  our  intellectual  property  rights  and  defending
intellectual property-related claims;

the  costs  and  timing  of  future  commercialization  activities,  including  product  manufacturing,  sales,  marketing  and  distribution,  for  any  of  our
product candidates for which we may receive marketing approval;

our ability to establish and maintain collaborations on favorable terms, if at all;

our ability to successfully execute on our strategic plans;

operational delays due to public health epidemics, including the recent COVID-19 pandemic; and

operational  delays,  disruptions  and/or  increased  costs  associated  with  global  economic  developments,  rising  global  energy  prices  or  energy
shortages or rationing.

We have historically incurred operating losses. We expect to incur losses in the future and may never achieve or maintain profitability.

We have a history of incurring operating losses. Our net losses for the twelve months ended December 31, 2023 and 2022 were $352.1 million and $231.8
million, respectively. As of December 31, 2023, we had an accumulated deficit of $822.6 million. Prior to the sale of our oncology business to Servier in
March 2021, we had generated only modest revenue from sales of TIBSOVO® and, prior to our sale to Royalty Pharma of our royalty rights to IDHIFA®,
from royalties on sales of IDHIFA®. Following receipt of marketing approval in February 2022, we have begun to commercialize PYRUKYND® for the
treatment of hemolytic anemia in adults with PK deficiency in the United States. We are currently providing access to PYRUKYND® free of charge for
eligible patients in the EU and Great Britain through a global managed access program, and we may provide access to PYRUKYND® for adult patients
with PK deficiency in other jurisdictions through the global managed access program on either a free of charge or for charge basis. PYRUKYND® is the
first  product  we  have  received  marketing  approval  for  following  the  sale  of  our  oncology  business.  We  have  neither  obtained  marketing  approval  for
PYRUKYND® in any other indications nor have we obtained marketing approval for any of our other product candidates, all of which are in preclinical or
clinical development stages.

Following the sale of our oncology business, we have financed and expect to continue to finance our operations primarily through cash on hand, royalty
payments from Servier with respect to U.S. net sales of TIBSOVO® prior to the sale of these royalty rights to Sagard, proceeds from the sale of our rights
to  the  royalty  on  U.S.  net  sales  of  TIBSOVO®  to  Sagard,  a  potential  milestone  payment  and  royalties  from  Servier  if  a  new  drug  application  for
vorasidenib is approved by the FDA with a label that permits vorasidenib's use as a single agent for the adjuvant treatment of patients with Grade 2 glioma
that  have  an  isocitrate  dehydrogenase  1  or  2  mutation,  the  actual  and  potential  future  sales  of  PYRUKYND®  and,  potentially,  collaborations,  strategic
alliances, licensing arrangements and other nondilutive strategic transactions. In addition, we may pursue opportunistic debt offerings, and equity or equity-
linked offerings. We expect to continue to incur significant expenses and net losses until such time as we are able to report profitable results. The net losses
we incur may fluctuate significantly from quarter to quarter. We anticipate that we will incur significant expenses if and as we:

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commercially launch PYRUKYND® for approved indications in approved jurisdictions;

continue to establish and maintain a sales, marketing and distribution infrastructure to commercialize PYRUKYND® and other product candidates
for which we may obtain marketing approval;

initiate and continue clinical trials for our products and product candidates, including PYRUKYND® in other indications;

continue our research and preclinical development of our product candidates and seek to identify additional product candidates;

seek marketing approvals for our product candidates that successfully complete clinical trials;

require the manufacture of larger quantities of product candidates for clinical development and commercialization;

• maintain, expand and protect our intellectual property portfolio;

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add additional personnel to support our product research and development and planned future commercialization efforts and our operations;

add equipment and physical infrastructure to support our research and development; and

acquire or in-license other product candidates, medicines and technologies.

To become and remain profitable, we must develop and successfully commercialize medicines with significant market potential. This will require us to be
successful in a range of challenging activities, including completing preclinical testing and

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clinical trials of our product candidates, obtaining marketing approval for these product candidates, manufacturing, marketing and selling those medicines
for which we may obtain marketing approval and satisfying any post-marketing requirements. If we do achieve profitability, we may not be able to sustain
or increase profitability on a quarterly or annual basis. Our failure to become and remain profitable would decrease the value of our company and could
impair our ability to raise capital, maintain our research and development efforts, expand our business or continue our operations. A decline in the value of
our company could also cause our stockholders to lose all or part of their investment.

The amount of contingent consideration we will receive from the sale of our oncology business to Servier is subject to various risks and uncertainties.

Upon  closing  of  the  sale  of  our  oncology  business  to  Servier,  Servier  assumed  certain  liabilities  with  respect  to  the  oncology  business  and  paid  to  us:
approximately $1.8 billion in cash, net of certain adjustments for the working capital of the oncology business at the time of closing of the transaction and
amounts for a representation and warranty insurance policy. In addition, Servier agreed to pay to us:

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$200.0 million in cash if, prior to January 1, 2027, vorasidenib is granted approval for an NDA from the FDA with an approved label that permits
vorasidenib’s use as a single agent for the adjuvant treatment of patients with Grade 2 glioma that have an IDH1 or IDH2 mutation (and, to the
extent required by such approval, the vorasidenib companion diagnostic test is granted an FDA premarket approval);

a royalty payment of 5% of the U.S. net sales (as defined in the purchase agreement with Servier) of TIBSOVO® from the completion of the
transaction through loss of exclusivity of TIBSOVO®, which we sold to Sagard in October 2022; and

a royalty payment of 15% of the U.S. net sales (as defined in the purchase agreement with Servier) of vorasidenib from its first commercial sale
through loss of exclusivity of vorasidenib.

The contingent consideration described above is subject to various risks and uncertainties.

Prior to the sale to Sagard, we have received royalties from Servier on U.S. net sales of TIBSOVO®. We cannot however predict what success, if any,
Servier  may  have  in  the  United  States  with  respect  to  future  sales  of  vorasidenib,  if  approved,  and,  therefore,  we  cannot  predict  the  amount  of  royalty
payments  that  we  can  expect  to  receive  from  Servier  prior  to  the  loss  of  exclusivity  of  vorasidenib.  The  potential  royalty  payments  with  respect  to
vorasidenib are also subject to deductions and other adjustments under the terms of the purchase agreement, the amounts of which are uncertain as of the
date of this report. In addition, there is no guarantee that vorasidenib will be approved by the FDA, and that, as such we will receive the $200.0 million
regulatory milestone payment.

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 Cuts and Jobs
Act, or the Tax Act, which significantly reformed the U.S. Internal Revenue Code of 1986, as amended, or the Code. The Tax Act, among other things,
contained significant changes to corporate taxation.

As  part  of  Congress’  response  to  the  recent  COVID-19  pandemic,  economic  relief  legislation  was  enacted  in  2020  and  2021.  Such  legislation  contains
numerous  tax  provisions.  In  addition,  the  Inflation  Reduction  Act  of  2022,  or  IRA,  was  signed  into  law  in  August  2022. The  IRA  introduced  new  tax
provisions, including a 1% excise tax imposed on certain stock repurchases by publicly traded corporations. The 1% excise tax generally applies to any
acquisition  by  the  publicly  traded  corporation  (or  certain  of  its  affiliates)  of  stock  of  the  publicly  traded  corporation  in  exchange  for  money  or  other
property (other than stock of the corporation itself), subject to a de minimis exception. Thus, the excise tax could apply to certain transactions that are not
traditional stock repurchases. Regulatory guidance under the IRA, the Tax Act, and such additional legislation 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, it is uncertain if and to what extent
various states will conform to the IRA, the Tax Act, and additional tax legislation.

Risks Related to Our Dependence on Third Parties

We rely and expect to continue to rely on third parties to conduct our clinical trials and some aspects of our research and preclinical testing, and those
third parties may not perform satisfactorily, including failing to meet deadlines for the completion of such trials, research or testing.

We do not independently conduct clinical trials of any of our product candidates. We rely and expect to continue to rely on third parties, such as CROs,
clinical  data  management  organizations,  medical  institutions  and  clinical  investigators,  to  conduct  our  clinical  trials.  In  addition,  we  currently  rely  and
expect to continue to rely on third parties to conduct some aspects of our research and preclinical testing. Any of these third parties may terminate their
engagements with us, some in the event of an

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uncured  material  breach  and  some  at  any  time.  If  any  of  our  relationships  with  these  third  parties  terminate,  we  may  not  be  able  to  enter  into  similar
arrangements with alternative third-parties or to do so on commercially reasonable terms. Switching or adding additional third parties involves additional
cost and requires management time and focus. As a result, delays may occur in our product development activities. Although we seek to carefully manage
our  relationships  with  our  CROs,  we  could  encounter  such  challenges  or  delays  that  could  have  a  material  adverse  impact  on  our  business,  financial
condition and prospects.

Our reliance on third parties for research and development activities reduces our control over these activities but does not relieve us of our responsibilities.
For example, we are responsible for ensuring that each of our studies is conducted in accordance with the applicable protocol and legal, regulatory and
scientific standards, and our reliance on third parties does not relieve us of our responsibility to comply with any such standards. We and these third parties
are required to comply with current good clinical practices, or cGCP, which are regulations and guidelines enforced by the FDA, the Competent Authorities
of  the  Member  States  of  the  EEA  and  comparable  foreign  regulatory  authorities  for  all  of  our  product  candidates  in  clinical  development.  Regulatory
authorities enforce these cGCPs through periodic inspections of trial sponsors, principal investigators and trial sites. If we or any of these third parties fail
to comply with applicable cGCPs, the clinical data generated in our clinical trials may be deemed unreliable and the FDA, the EMA, or comparable foreign
regulatory  authorities  may  require  us  to  perform  additional  clinical  trials  before  approving  our  marketing  applications.  We  cannot  assure  you  a  given
regulatory authority will determine that any of our clinical trials comply with cGCP regulations. We also are required to register ongoing clinical trials and
post  the  results  of  completed  clinical  trials  on  a  U.S.  government-sponsored  database,  clinicaltrials.gov,  within  certain  timeframes.  Failure  to  do  so  can
result in fines, adverse publicity, and civil and criminal sanctions. We are exposed to risk of fraud or other misconduct by such third parties.

Furthermore, third parties on whom we rely may also have relationships with other entities, some of which may be our competitors. In addition, these third
parties are not our employees, and except for remedies available to us under our agreements with such third parties, we cannot control whether or not they
devote sufficient time and resources to our on-going clinical, nonclinical, and preclinical programs.

If these third parties do not successfully carry out their contractual duties or obligations or meet expected deadlines, if they need to be replaced or if the
quality or accuracy of the clinical data they obtain is compromised, our clinical trials may be extended, delayed or terminated and we may not be able to
obtain,  or  may  be  delayed  in  obtaining,  marketing  approvals  for  our  product  candidates  and  will  not  be  able  to,  or  may  be  delayed  in  our  efforts  to
successfully commercialize our medicines.

If either we or any third parties on which we rely are adversely impacted by rising global energy costs or energy shortages or rationing, delays may occur in
our product development activities, which delays could have a material adverse impact on our business, financial condition and prospects.

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

We contract with third parties for the manufacture of our product candidates for preclinical and clinical testing and for commercialization.

We do not have any manufacturing or supply chain related facilities. We currently rely, and expect to continue to rely, on third-party manufacturers for the
materials  and  manufacture  of  our  product  candidates  for  preclinical  and  clinical  testing  and  for  commercial  supply  of  PYRUKYND®  and  any  product
candidate for which we obtain marketing approval.

Although we have entered into long-term supply agreements for commercial supply of PYRUKYND® with third-party manufacturers, we may be unable
to  establish  similar  long-term  supply  agreements  with  third-party  manufacturers  with  respect  to  our  other  product  candidates  or  to  do  so  on  acceptable
terms. Even if we are able to establish agreements with third-party manufacturers, reliance on third-party manufacturers entails additional risks, including:

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reliance on the third party for regulatory compliance, quality assurance, environmental and safety and pharmacovigilance reporting;

the possible breach of the manufacturing agreement by the third party; and

the possible termination or nonrenewal of the agreement by the third party at a time that is costly or inconvenient for us.

Third-party manufacturers may not be able to comply with cGMPs, regulations or similar regulatory requirements on a global basis. Our failure, or the
failure of our third-party manufacturers, to comply with currently applicable regulations, or regulations or specifications to which we become subject in the
future, could result in sanctions being imposed on us, including fines,

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injunctions,  civil  penalties,  delays,  suspension  or  withdrawal  of  approvals,  license  revocation,  seizures  or  recalls  of  product  candidates  or  medicines,
operating restrictions and criminal prosecutions, any of which could significantly and adversely affect supplies of our medicines and harm our business and
results of operations.

If either we or any third parties on which we rely are adversely impacted by restrictions resulting from the recent COVID-19 pandemic, the emergence of
another public health epidemic, by rising global energy costs or energy shortages or rationing and/or the impacts of the Russia-Ukraine war, our supply
chain may be disrupted, limiting our ability to manufacture our product candidates for our clinical trials and research and development operations and our
product for commercialization.

Any performance failure on the part of our existing or future manufacturers could delay preclinical development, clinical development, marketing approval
or our commercialization efforts. Due to the volatility of the supply networks globally, we have obtained regulatory approval for redundant supply of raw
materials and active pharmaceutical ingredient for PYRUKYND®, and have an ongoing program to monitor supply, including establishing safety stocks.
While we maintain a broad safety stock of drug product, we do not currently have arrangements in place for redundant supply for drug product. If any one
of  our  current  contract  manufacturers  cannot  perform  as  agreed,  we  may  be  required  to  replace  that  manufacturer.  Although  we  believe  that  there  are
several  potential  alternative  manufacturers  who  could  manufacture  our  product  or  our  product  candidates,  we  may  incur  added  costs  and  delays  in
identifying and qualifying any such replacement.

Our current and anticipated future dependence upon others for the manufacture of our product candidates or medicines may adversely affect our future
profit margins and our ability to commercialize any medicines that receive marketing approval on a timely and competitive basis.

We may depend on collaborations with third parties for the development and commercialization of our product candidates. If those collaborations are
not successful, we may not be able to capitalize on the market potential of these product candidates.

We may seek collaborations for the development and commercialization of our product candidates with large and mid-size pharmaceutical companies and
biotechnology  companies.  We  face  significant  competition  in  seeking  appropriate  collaborators.  Collaborations  are  complex  and  time-consuming  to
negotiate  and  document.  Whether  we  reach  a  definitive  agreement  for  a  collaboration  will  depend,  among  other  things,  upon  our  assessment  of  the
collaborator’s resources and expertise, the terms and conditions of the proposed collaboration and the proposed collaborator’s evaluation of a number of
factors. We may not be able to negotiate collaborations on a timely basis, on acceptable terms, or at all. Collaborators may have rights that restrict us from
entering into future agreements on certain terms with potential collaborators.

If  we  enter  into  any  such  arrangements  with  collaborators,  we  will  likely  have  limited  control  over  the  amount  and  timing  of  resources  that  our
collaborators  dedicate  to  the  development  or  commercialization  of  our  product  candidates.  Collaborators  may  not  pursue  development  and
commercialization  of  our  product  candidates  or  may  elect  not  to  continue  or  renew  development  or  commercialization  programs  based  on  clinical  trial
results,  changes  in  the  collaborator’s  strategic  focus  or  available  funding  or  external  factors  such  as  an  acquisition  that  diverts  resources  or  creates
competing  priorities.  Collaborators  may  delay  clinical  trials,  provide  insufficient  funding  for  a  clinical  trial  program,  stop  a  clinical  trial  or  abandon  a
product candidate, repeat or conduct new clinical trials or require a new formulation of a product candidate for clinical testing, which may result in a need
for additional capital to pursue further development or commercialization of the applicable product candidate. Collaborators may not properly maintain or
defend our intellectual property rights or may use our proprietary information in such a way as to invite litigation that could jeopardize or invalidate our
proprietary information or expose us to potential litigation. Disputes may arise between the collaborators and us that result in the delay or termination of the
research, development or commercialization of our medicines or product candidates or that result in costly litigation or arbitration that diverts management
attention and resources. In addition, our ability to enter into arrangements with collaborators in specific regions, such as the Middle East, may be affected
by localized geopolitical unrest or military conflict, such as the current armed conflict in Israel and the Gaza Strip.

Our ability to generate revenue from these arrangements will depend on our collaborators’ abilities to successfully perform the functions assigned to them
in these arrangements.

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Risks Related to Our Intellectual Property

If we are unable to obtain and maintain patent or trade secret protection for our medicines and technology, or if the scope of the patent protection
obtained  is  not  sufficiently  broad,  our  competitors  could  develop  and  commercialize  medicines  and  technology  similar  or  identical  to  ours,  and  our
ability to successfully commercialize our medicines and technology may be adversely affected.

Our  success  depends  in  large  part  on  our  ability  to  obtain  and  maintain  patent  protection  in  the  United  States  and  other  countries  with  respect  to  our
proprietary medicines and technology. We seek to protect our proprietary position by filing patent applications in the United States and abroad related to
our novel technologies and medicines that are important to our business. We do not yet have issued patents for all our most advanced product candidates in
all markets in which we intend to commercialize but we continue to actively pursue patent protection for our assets around the world.

The patent prosecution process is costly and time-consuming, and we may not be able to file and prosecute all necessary or desirable patent applications at
a reasonable cost or in a timely manner. It is also possible that we will fail to identify and/or file patent applications on every aspect of our research and
development output that is or may be eligible for patent protection. Although we enter into non-disclosure and confidentiality agreements with parties who
may  have  access  to  patentable  aspects  of  our  research  and  development  output,  such  as  our  employees,  corporate  collaborators,  outside  scientific
collaborators,  contract  research  organizations,  contract  manufacturers,  consultants,  advisors  and  other  third  parties,  any  of  these  parties  may  breach  the
agreements  and  disclose  such  output  before  a  patent  application  is  filed,  thereby  jeopardizing  our  ability  to  seek  patent  protection.  There  is  also  the
possibility that loss or theft of data or records may jeopardize the ability to seek patent protection or impede the progress or drafting of patent applications.

We have licensed patent rights, and in the future may license additional patent rights, from third parties. Such licenses may be accompanied by milestone
and/or royalty payment obligations. These licensed patent rights may be valuable to our business, and we may not have the right to control the preparation,
filing and prosecution of patent applications, or to maintain the patents, covering technology or medicines underlying such licenses. We cannot be certain
that these patents and applications will be prosecuted and enforced in a manner consistent with the best interests of our business. If any such licensors fail
to  maintain  such  patents,  or  lose  rights  to  those  patents,  the  rights  we  have  licensed  may  be  reduced  or  eliminated  and  our  right  to  develop  and
commercialize any of our products that are the subject of such licensed rights could be adversely affected. In addition to the foregoing, the risks associated
with patent rights that we license from third parties also apply to patent rights we own.

The patent position of biotechnology and pharmaceutical companies generally is highly uncertain, involves complex legal and factual questions and has in
recent  years  been  the  subject  of  much  litigation.  As  a  result,  the  issuance,  scope,  validity,  enforceability  and  commercial  value  of  our  patent  rights  are
highly  uncertain.  Our  pending  and  future  patent  applications  may  not  result  in  patents  being  issued  that  protect  our  technology  or  medicines  or  that
effectively prevent others from commercializing competitive technologies and medicines. Changes in either the patent laws or interpretation of the patent
laws  in  the  United  States  and  other  countries  may  diminish  the  value  of  our  patents  or  narrow  the  scope  of  our  patent  protection.  The  laws  of  foreign
countries may not protect our rights to the same extent as the laws of the United States. Publications of discoveries in the scientific literature often lag
behind the actual discoveries, and patent applications in the United States and other jurisdictions are typically not published until 18 months after filing, or
in some cases not at all. Therefore, we cannot be certain that we were the first to make the inventions claimed in our owned or licensed patents or pending
patent applications, or that we were the first to file for patent protection of such inventions.

Assuming the other requirements for patentability are met, prior to March 2013, in the United States, the first to make the claimed invention was entitled to
the  patent,  while  outside  the  United  States,  the  first  to  file  a  patent  application  was  entitled  to  the  patent.  Beginning  in  March  2013,  the  United  States
transitioned  to  a  first  inventor  to  file  system  in  which,  assuming  the  other  requirements  for  patentability  are  met,  the  first  inventor  to  file  a  patent
application will be entitled to the patent. We may be subject to a third-party pre-issuance submission of prior art to the U.S. Patent and Trademark Office,
or  USPTO,  or  become  involved  in  opposition,  derivation,  revocation,  reexamination,  post-grant  and  inter  partes  review  or  interference  proceedings
challenging  our  patent  rights  or  the  patent  rights  of  others.  An  adverse  determination  in  any  such  submission,  proceeding  or  litigation  could  reduce  the
scope of, or invalidate, our patent rights, allow third parties to commercialize our technology or products and compete directly with us, without payment to
us, or result in our inability to manufacture or commercialize medicines without infringing third-party patent rights.

Even if our patent applications issue as patents, they may not issue in a form that will provide us with any meaningful protection, prevent competitors or
other third parties from competing with us or otherwise provide us with any competitive advantage. Our competitors or other third parties may be able to
circumvent our patents by developing similar or alternative technologies or products in a non-infringing manner.

The issuance of a patent is not conclusive as to its inventorship, scope, validity or enforceability, and our patents may be challenged in the courts or patent
offices in the United States and abroad. Such challenges may result in loss of the patent or in

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one or more patent claims being narrowed or invalidated, which could limit our ability to stop others from using or commercializing similar or identical
technology and products, or limit the duration of the patent protection of our technology and medicines. Given the significant amount of time required for
the  discovery,  development,  preclinical  and  clinical  testing  and  regulatory  review  and  approval  of  new  product  candidates,  patents  protecting  such
candidates might expire before or shortly after such candidates are commercialized. As a result, our intellectual property may not provide us with sufficient
rights to exclude others from commercializing products similar or identical to ours. In such circumstances we would be relying primarily on regulatory or
marketing exclusivity to exclude others from commercializing a generic version of our products.

We may become involved in lawsuits to protect or enforce our patents and other intellectual property rights, which could be expensive, time consuming
and unsuccessful.

Competitors  may  infringe  our  patents  and  other  intellectual  property  rights.  To  counter  infringement  or  unauthorized  use,  we  may  be  required  to  file
infringement claims, which can be expensive and time consuming. In addition, in an infringement proceeding, a court may decide that a patent of ours is
invalid  or  unenforceable,  or  may  refuse  to  stop  the  other  party  from  using  the  technology  at  issue  on  the  grounds  that  our  patents  do  not  cover  the
technology  in  question.  An  adverse  result  in  any  litigation  proceeding  could  put  one  or  more  of  our  patents  at  risk  of  being  invalidated  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 compromised by disclosure during this type of litigation.

Third parties may initiate legal proceedings alleging that we or our collaborators are infringing their intellectual property rights, the outcome of which
would be uncertain and could have a material adverse effect on the success of our business.

The  biotechnology  and  pharmaceutical  industries  are  characterized  by  extensive  litigation  regarding  patents  and  other  intellectual  property  rights.  Our
commercial  success  depends  upon  our  ability  and  the  ability  of  our  collaborators  to  develop,  manufacture,  market  and  sell  our  product  and  product
candidates and use our proprietary technologies without infringing the proprietary rights and intellectual property of third parties. We have in the past and
may  in  the  future  become  party  to,  or  threatened  with,  adversarial  proceedings  or  litigation  regarding  intellectual  property  rights  with  respect  to  our
medicines  and  technology,  including  opposition,  derivation,  revocation,  reexamination,  post-grant  and  inter  partes  review  or  interference  proceedings
before the USPTO or other patent offices around the world. We are not aware of any legal proceedings having been filed against us following the sale of
our oncology business to Servier. Third parties may assert infringement claims against us based on existing patents or patents that may be granted in the
future. If we or one of our collaborators are found to infringe a third party’s intellectual property rights, we or they could be required to obtain a license
from such third party to continue developing and marketing our medicines and technology. However, we or our collaborators may not be able to obtain any
required license on commercially reasonable terms or at all. Even if we or our collaborators 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. We or our collaborators could be forced, including by court
order,  to  cease  developing  and  commercializing  the  infringing  technology  or  medicine.  In  addition,  we  or  our  collaborators  could  be  found  liable  for
monetary damages. A finding of infringement could prevent us or our collaborators from commercializing our product and product candidates or force us
to  cease  some  of  our  business  operations,  which  could  materially  harm  our  business.  Claims  that  we  or  our  collaborators  have  misappropriated  the
confidential information or trade secrets of third parties could have a similar negative impact on our business.

We may be subject to claims that our employees have wrongfully used or disclosed alleged trade secrets of their former employers.

Many  of  our  employees,  consultants  or  advisors  are  currently  or  were  previously  employed  at  universities  or  other  biotechnology  or  pharmaceutical
companies,  including  our  competitors  or  potential  competitors.  Although  we  try  to  ensure  that  our  employees,  consultants  and  advisors  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  individuals  have  used  or  disclosed
intellectual  property,  including  trade  secrets  or  other  proprietary  information,  of  any  such  individual’s  current  or  former  employer.  Litigation  may  be
necessary to defend against these claims. If we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable

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intellectual property rights or personnel. Even if we are successful in defending against such claims, litigation could result in substantial costs and be a
distraction to our organization.

Intellectual property litigation could cause us to spend substantial resources and distract our personnel from their normal responsibilities.

Even if resolved in our favor, litigation or other legal proceedings relating to intellectual property claims may cause us to incur significant expenses, and
could distract our technical and management personnel from their normal responsibilities. In addition, there could be public announcements of the results
of hearings, motions or other interim proceedings or developments and if securities analysts or investors perceive these results to be negative, it could have
a substantial adverse effect on the price of our common stock. Such litigation or proceedings could substantially increase our operating losses and reduce
the resources available for development activities or any future sales, marketing or distribution activities. We may not have sufficient financial or other
resources to adequately conduct such litigation or proceedings. Some of our competitors may be able to sustain the costs of such litigation or proceedings
more  effectively  than  we  can  because  of  their  greater  financial  resources  and  more  mature  and  developed  intellectual  property  portfolios.  Uncertainties
resulting from the initiation and continuation of patent litigation or other proceedings could have a material adverse effect on our ability to compete in the
marketplace.

If we are unable to protect the confidentiality of our confidential information related to our proprietary platforms and technology, our business and
competitive position could be harmed.

In  addition  to  seeking  patents  for  some  of  our  technology  and  medicines,  we  also  rely  on  maintaining  the  confidentiality  of  unpatented  know-how,
technology and other proprietary information, to maintain our competitive position. For example, we consider the confidential information and know-how
related  to  our  cellular  metabolism  technology  platform  to  be  our  primary  intellectual  property  assets  in  this  space.  Unpatented  proprietary  technical
information and know-how can be difficult to protect.

We seek to protect this proprietary technical information and know-how, in part, by entering into non-disclosure and confidentiality agreements with parties
who  have  access  to  them,  such  as  our  employees,  corporate  collaborators,  outside  scientific  collaborators,  contract  research  organizations,  contract
manufacturers,  consultants,  advisors  and  other  third  parties.  We  also  enter  into  confidentiality  and  invention  or  patent  assignment  agreements  with  our
employees and consultants. Despite these efforts, any of these parties may breach the agreements and disclose our proprietary information, and we may not
be  able  to  obtain  adequate  remedies  for  such  breaches.  Enforcing  a  claim  that  a  party  illegally  disclosed  or  misappropriated  proprietary  information  is
difficult,  expensive  and  time-consuming,  and  the  outcome  is  unpredictable.  If  any  of  our  proprietary  technical  information  and  know-how  were  to  be
lawfully obtained or independently developed by a competitor or other third party, we would have no right to prevent them from using that technology or
information to compete with us. Moreover, we anticipate that with respect to this platform, at least some of this technical information and know-how will,
over time, be disseminated within the industry through independent development, the publication of journal articles describing the methodology, and the
movement of personnel skilled in the art from academic to industry scientific positions.

Risks Related to Regulatory Approval of Our Product Candidates and Other Legal Compliance Matters

Even if we complete necessary preclinical studies and clinical trials, the marketing approval process is expensive, time-consuming and uncertain and
may prevent us from obtaining approvals for the commercialization of some or all of our product candidates. If we or our collaborators are not able to
obtain,  or  if  there  are  delays  in  obtaining,  required  regulatory  approvals,  we  or  they  will  not  be  able  to  commercialize,  or  will  be  delayed  in
commercializing, our product candidates, and our ability to generate revenue will be materially impaired.

Our  product  candidates  and  the  activities  associated  with  their  development  and  commercialization,  including  their  design,  testing,  manufacture,  safety,
efficacy,  record  keeping,  labeling,  storage,  approval,  advertising,  promotion,  sale  and  distribution,  export  and  import,  are  subject  to  comprehensive
regulation by the FDA and other regulatory agencies in the United States and by the EMA and comparable regulatory authorities in other countries.

Securing  marketing  approval  requires  the  submission  of  extensive  preclinical  and  clinical  data  and  supporting  information  to  the  various  regulatory
authorities for each therapeutic indication to establish the product candidate’s safety and efficacy. Securing regulatory approval also requires the submission
of  information  about  the  product  manufacturing  process  to,  and  inspection  of  manufacturing  facilities  by,  the  relevant  regulatory  authority.  Our  product
candidates  may  not  be  effective,  may  be  only  moderately  effective  or  may  prove  to  have  undesirable  or  unintended  side  effects,  toxicities  or  other
characteristics that may preclude our obtaining marketing approval or prevent or limit commercial use.

In addition, varying interpretations of the data obtained from preclinical and clinical testing could delay, limit or prevent marketing approval of a product
candidate. Any marketing approval we or our collaborators ultimately obtain may be limited or subject to restrictions or post-approval commitments that
render the approved medicine not commercially viable.

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The FDA, EMA and other foreign regulatory authorities have substantial discretion in the approval process. Accordingly, it is possible that the FDA or
EMA may refuse to accept for substantive review any NDA, sNDA or MAA that we submit for our product candidates, or may conclude after review of
our  data  that  our  marketing  application  is  insufficient  to  obtain  marketing  approval  of  our  product  candidates.  If  the  FDA  or  EMA  does  not  accept  or
approve  our  applications  for  any  of  our  product  candidates,  the  applicable  regulator  may  require  that  we  conduct  additional  clinical  trials,  preclinical
studies or manufacturing validation studies and submit that data before reconsidering our applications. Depending on the extent of these or any other FDA-
or EMA-required trials or studies, approval of any marketing applications that we submit may be delayed by several years, or may require us to expend
more resources than we planned. It is also possible that additional trials or studies, if performed and completed, may not be considered sufficient by the
FDA or EMA to approve any marketing applications. We may not be successful in obtaining FDA or EMA approval of our product candidates on a timely
basis, or ever. We have limited experience in filing and supporting the applications necessary to gain marketing approvals and expect to rely on third-party
contract  research  organizations  to  assist  us  in  this  process,  and  failure  to  obtain  marketing  approval  for  our  product  candidates  will  prevent  us  from
commercializing the product candidate in the applicable jurisdictions.

Further, the process of obtaining marketing approvals, both in the United States and abroad, is expensive, may take many years if additional clinical trials
are required, if approval is obtained at all, and can vary substantially based upon a variety of factors, including the type, complexity and novelty of the
product candidates involved. Changes in marketing approval policies during the development period, changes in or the enactment of additional statutes or
regulations, or changes in regulatory review for each submitted product application, may cause delays in the approval or rejection of an application.

Disruptions at the FDA and other agencies may prolong the time necessary for regulatory submissions to be reviewed and/or new drugs to be approved by
necessary government agencies, which would adversely affect our business. For example, over the last several years, the U.S. government has shut down
several  times  and  certain  regulatory  agencies,  such  as  the  FDA,  have  had  to  furlough  critical  employees  and  stop  critical  activities.  If  a  prolonged
government shutdown were to occur, it could significantly impact the ability of the FDA to timely review and process our regulatory submissions, which
could have a material adverse effect on our business. For example, should the FDA determine that an inspection is necessary for approval of a regulatory
submission and an inspection cannot be completed during the review cycle, and the FDA does not determine a remote interactive evaluation to be adequate,
the  FDA  has  stated  that  it  generally  intends  to  issue  a  complete  response  letter  or  defer  action  on  the  regulatory  submission  until  an  inspection  can  be
completed.

Finally,  our  ability  to  develop  and  market  new  drug  products  may  be  threatened  by  the  results  of  ongoing  litigation  challenging  the  FDA’s  approval  of
another  company’s  drug.  Specifically,  in  April  2023,  the  U.S.  District  Court  for  the  Northern  District  of  Texas  invalidated  the  approval  by  the  FDA  of
mifepristone, a drug product which was originally approved in 2000 and whose distribution is governed by various measures adopted under a REMS. In
reaching that decision, the district court made a number of findings that may negatively impact the development, approval and distribution of new drug
products in the United States.

The  Court  of  Appeals  for  the  Fifth  Circuit  declined  to  order  the  removal  of  mifepristone  from  the  market,  finding  that  a  challenge  to  the  FDA’s  initial
approval in 2000 is barred by the statute of limitations. But the Court of Appeals for the Fifth Circuit did hold that plaintiffs were likely to prevail in their
claim that changes allowing for expanded access of mifepristone that the FDA authorized in 2016 and 2021 were arbitrary and capricious. In December
2023,  the  Supreme  Court  announced  that  it  will  review  the  appeals  court  decision.  Depending  on  the  outcome  of  this  litigation  and  the  regulatory
uncertainty it has engendered, our ability to develop new drug product candidates and to maintain approval of existing drug products and measures adopted
under a REMS is at risk and our efforts to develop and market new drug products could be delayed, undermined or subject to protracted litigation.

If  we  or  our  collaborators  experience  delays  in  obtaining  approval  or  if  we  or  they  fail  to  obtain  approval  of  our  product  candidates,  the  commercial
prospects for our product candidates may be harmed and our ability to generate revenue will be materially impaired.

Failure to obtain marketing approval in foreign jurisdictions would prevent our medicines from being marketed in such jurisdictions and any of our
medicines that are approved for marketing in such jurisdiction will be subject to risk associated with foreign operations.

In order to market and sell our medicines in the EU and many other foreign jurisdictions, we or our collaborators must obtain separate marketing approvals
and comply with numerous and varying regulatory requirements. The approval procedure varies among countries and can involve additional testing. The
time required to obtain approval may differ substantially from that required to obtain FDA approval. The regulatory approval process outside the United
States generally includes all of the risks associated with obtaining FDA approval. In addition, in many countries outside the United States, a product must
be  approved  for  reimbursement  before  the  product  can  be  approved  for  sale  in  that  country.  We  or  our  collaborators  may  not  obtain  approvals  from
regulatory  authorities  outside  the  United  States  on  a  timely  basis,  if  at  all.  Moreover,  approval  by  the  FDA  does  not  ensure  approval  by  regulatory
authorities in other countries or jurisdictions, and approval by one regulatory authority

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outside the United States does not ensure approval by regulatory authorities in other countries or jurisdictions or by the FDA. Although we have received
marketing  authorization  for  PYRUKYND®  for  the  treatment  of  adults  with  PK  deficiency  in  the  EU  and  Great  Britain,  we  may  not  be  able  to  file  for
additional marketing approvals and may not receive necessary approvals to commercialize our medicines in any other foreign market.

Additionally, we could face heightened risks with respect to seeking marketing approval in the United Kingdom as a result of the withdrawal of the United
Kingdom from the EU on December 31, 2020, commonly referred to as Brexit. Since the regulatory framework for pharmaceutical products in the United
Kingdom covering the quality, safety, and efficacy of pharmaceutical products, clinical trials, marketing authorization, commercial sales, and distribution of
pharmaceutical  products  is  derived  from  EU  directives  and  regulations,  the  consequences  of  Brexit  and  the  impact  on  the  future  regulatory  regime  that
applies to products and the approval of product candidates in the United Kingdom remains unclear. 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 will continue to be subject to EU rules under the Northern Ireland Protocol. The United
Kingdom  and  the  EU  have  however  agreed  to  the  Windsor  Framework  which  fundamentally  changes  the  existing  system  under  the  Northern  Ireland
Protocol, including with respect to the regulation of medicinal products in the United Kingdom. Once implemented, the changes introduced by the Windsor
Framework will result in the MHRA being responsible for approving all medicinal products destined for the United Kingdom market (Great Britain and
Northern Ireland), and the EMA will no longer have any role in approving medicinal products destined for Northern Ireland. Any delay in obtaining, or an
inability to obtain, any marketing approvals, as a result of Brexit or otherwise, may prevent us from commercializing any product candidates in the United
Kingdom and/or the EU and may force us to restrict or delay efforts to seek regulatory approval in the United Kingdom, which could significantly and
materially harm our business.

In  addition,  foreign  regulatory  authorities  may  change  their  approval  policies  and  new  regulations  may  be  enacted.  For  instance,  the  European  Union
pharmaceutical legislation is currently undergoing a complete review process, in the context of the Pharmaceutical Strategy for Europe initiative, launched
by the European Commission in November 2020. The European Commission’s proposal for revision of several legislative instruments related to medicinal
products (including potentially reducing the duration of regulatory data protection and revising the eligibility for expedited pathways) was published on
April  26,  2023.  The  proposed  revisions  remain  to  be  agreed  and  adopted  by  the  European  Parliament  and  European  Council  and  the  proposals  may
therefore be substantially revised before adoption, which is not anticipated before early 2026. The revisions may however have a significant impact on the
pharmaceutical industry and our business in the long term.

We expect that we will be subject to additional risks in commercializing any of our product candidates that receive marketing approval outside the United
States,  including  tariffs,  trade  barriers  and  regulatory  requirements;  economic  weakness,  including  inflation,  or  political  instability  in  particular  foreign
economies  and  markets;  compliance  with  tax,  employment,  immigration  and  labor  laws  for  employees  living  or  traveling  abroad;  foreign  currency
fluctuations, which could result in increased operating expenses and reduced revenue, and other obligations incident to doing business in another country;
and  workforce  uncertainty  in  countries  where  labor  unrest  is  more  common  than  in  the  United  States.  In  addition,  we  do  not  have  experience
commercializing products outside of the United States and such efforts may depend on our ability to find a suitable collaborator.

Fast track designation and/or priority review designation by the FDA or PRIME designation in the EU may not actually lead to a faster development or
regulatory review or approval process, nor does it assure approval of the product candidate by the FDA or the EMA.

We may seek fast track designation, priority review designation and/or PRIME designation for our product candidates.

If a product candidate is intended for the treatment of a serious or life-threatening disease or condition and the product candidate demonstrates the potential
to address unmet medical needs for this disease or condition, the drug sponsor may apply for FDA fast track designation.

Further, if the FDA determines that a product candidate offers major advances in treatment or provides a treatment where no adequate therapy exists, the
FDA may designate the product candidate for priority review. A priority review designation means that the goal for the FDA to review an application is six
months, rather than the standard review period of ten months. Receiving priority review from the FDA does not guarantee approval within the six-month
review cycle or thereafter.

The FDA has broad discretion on whether to grant fast track designation and/or priority review designation to a product candidate, so even if we believe a
particular product candidate is eligible for such designation or status, the FDA may decide not to grant it. Even if our product candidates receive fast track
designation and/or priority review designation, we may not experience a faster development process, review or approval, if at all, compared to conventional
FDA procedures. The FDA

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may withdraw fast track designation if it believes that the designation is no longer supported by data from our clinical development program.

In addition, in the EU, the PRIME designation program focuses on product candidates that target conditions for which there exists no satisfactory method
of treatment in the EU or product candidates that may offer a major therapeutic advantage over existing treatments. The benefits of a PRIME designation
include, among other things, the potential to qualify product for accelerated review, meaning reduction in the review time for an opinion on approvability to
be  issued  earlier  in  the  application  process.  PRIME  designation  enables  a  sponsor  to  request  parallel  EMA  scientific  advice  and  health  technology
assessment  advice  to  facilitate  timely  market  access.  Even  if  our  product  candidates  receive  PRIME  designation,  we  may  not  experience  a  faster
development process, review or approval compared to conventional EMA procedures and it does not assure or increase the likelihood of the EMA’s grant of
a marketing authorization.

We, or any collaborators, may not be able to obtain orphan drug designation or orphan drug exclusivity for our drug candidates and, even if we do, that
exclusivity may not prevent the FDA or the EMA from approving competing drugs.

Regulatory  authorities  in  some  jurisdictions,  including  the  United  States  and  Europe,  may  designate  drugs  and  biologics  for  relatively  small  patient
populations as orphan drugs. Under the Orphan Drug Act, the FDA may designate a product as an orphan drug if it is a drug or biologic intended to treat a
rare disease or condition, which is generally defined as a patient population of fewer than 200,000 individuals annually in the United States.

Generally,  if  a  product  with  an  orphan  drug  designation  subsequently  receives  the  first  marketing  approval  for  the  indication  for  which  it  has  such
designation,  the  product  is  entitled  to  a  period  of  marketing  exclusivity,  which  precludes  the  EMA  or  the  FDA  from  approving  another  marketing
application for the same product for that time period. The applicable period is seven years in the United States and ten years in Europe. The European
exclusivity period can be reduced to six years if a product no longer meets the criteria for orphan drug designation or if the product is sufficiently profitable
so that market exclusivity is no longer justified. Orphan drug exclusivity may be lost if the FDA or EMA determines that the request for designation was
materially  defective  or  if  the  manufacturer  is  unable  to  assure  sufficient  quantity  of  the  product  to  meet  the  needs  of  patients  with  the  rare  disease  or
condition.  Moreover,  even  after  an  orphan  drug  is  approved,  the  FDA  can  subsequently  approve  a  different  product  for  the  same  condition  if  the  FDA
concludes that the later product is clinically superior in that it is shown to be safer, more effective or makes a major contribution to patient care.

In addition, even after an orphan drug is approved, the FDA can subsequently approve a different product for the same condition if the FDA concludes that
the later product is clinically superior in that it is shown to be safer, more effective or makes a major contribution to patient care.

The FDA and Congress 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 11th 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 FDA to mean the “indication or use.” Although
there  have  been  legislative  proposals  to  overrule  this  decision,  they  have  not  been  enacted  into  law.  On  January  23,  2023,  the  FDA  announced  that,  in
matters beyond the scope of that court order, the FDA will continue to apply its existing regulations tying orphan-drug exclusivity to the uses or indications
for which the orphan drug was approved. We do not know if, when, or how the FDA or Congress 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.

Any product or product candidate for which we or our collaborators obtain marketing approval could be subject to restrictions or withdrawal from the
market and we may be subject to substantial penalties if we fail to comply with regulatory requirements or if we experience unanticipated problems with
our medicines, when and if any of them are approved.

Any  product  or  product  candidate  for  which  we  or  our  collaborators  obtain  marketing  approval,  along  with  the  manufacturing  processes,  post-approval
clinical data, labeling, advertising and promotional activities for such medicine, will be subject to continual requirements of and review by the FDA and
other regulatory authorities. These requirements include submissions of safety and other post-marketing information and reports, registration and listing
requirements,  cGMP  requirements  relating  to  quality  control  and  manufacturing,  quality  assurance  and  corresponding  maintenance  of  records  and
documents, and requirements regarding the distribution of samples to physicians and record keeping. Even if marketing approval of a product candidate is
granted,  the  approval  may  be  subject  to  limitations  on  the  indicated  uses  for  which  the  medicine  may  be  marketed  or  to  the  conditions  of  approval,  or
contain  requirements  for  costly  post-marketing  testing  and  surveillance  to  monitor  the  safety  or  efficacy  of  the  medicine,  including  the  requirement  to
implement a risk evaluation and mitigation strategy.

The FDA and other agencies, including the DOJ, closely regulate and monitor the post-approval marketing and promotion of products to ensure that they
are marketed and distributed only for the approved indications and in accordance with the provisions of the approved labeling. The FDA and DOJ impose
stringent  restrictions  on  manufacturers’  communications  regarding  off-label  use  and  if  we  market  our  medicines  for  uses  other  than  their  respective
approved indications, we may be

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subject to enforcement actions for off-label marketing. Violations of the FDCA and other statutes, including the False Claims Act, relating to the promotion
and advertising of prescription drugs may lead to investigations and enforcement actions alleging violations of federal and state health care fraud and abuse
laws, as well as state consumer protection laws, which violations may result in the imposition of significant administrative, civil and criminal penalties.

Our  relationships  with  healthcare  providers,  physicians  and  third-party  payors  are  subject  to  applicable  anti-kickback,  fraud  and  abuse  and  other
healthcare  laws  and  regulations,  which,  in  the  event  of  a  violation,  could  expose  us  to  criminal  sanctions,  civil  penalties,  contractual  damages,
reputational harm and diminished profits and future earnings.

Healthcare  providers,  physicians  and  third-party  payors  will  play  a  primary  role  in  the  recommendation  and  prescription  of  PYRUKYND®  and  any
product  candidates  for  which  we  obtain  marketing  approval.  Our  future  arrangements  with  healthcare  providers,  physicians  and  third-party  payors  may
expose us to broadly applicable fraud and abuse and other healthcare laws and regulations that may constrain the business or financial arrangements and
relationships through which we market, sell and distribute PYRUKYND® and any other medicines for which we obtain marketing approval. Restrictions
under applicable federal and state healthcare laws and regulations include the following:

•

•

•

the federal Anti-Kickback Statute prohibits, among other things, persons from knowingly and willfully soliciting, offering, receiving or providing
remuneration, directly or indirectly, in cash or in kind, to induce or reward, or in return for, either the referral of an individual for, or the purchase,
order  or  recommendation  or  arranging  of,  any  good  or  service,  for  which  payment  may  be  made  under  a  federal  healthcare  program  such  as
Medicare and Medicaid;

the federal False Claims Act imposes criminal and civil penalties, including through civil whistleblower or qui tam actions, against individuals or
entities for, among other things, knowingly presenting, or causing to be presented, false or fraudulent claims for payment by a federal healthcare
program or making a false statement or record material to payment of a false claim or avoiding, decreasing or concealing an obligation to pay
money to the federal government, with potential liability including mandatory treble damages and significant per-claim penalties;

the federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, imposes criminal and civil liability for executing a scheme to
defraud any healthcare benefit program or making false statements relating to healthcare matters;

• HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act and its implementing regulations, also imposes
obligations, including mandatory contractual terms, with respect to safeguarding the privacy, security and transmission of individually identifiable
health information;

•

•

the federal Physician Payments Sunshine Act requires applicable manufacturers of covered drugs to report payments and other transfers of value
to physicians and teaching hospitals and other covered recipients; and

analogous state and foreign laws and regulations, such as state anti-kickback and false claims laws and transparency statutes, may apply to sales or
marketing arrangements and claims involving healthcare items or services reimbursed by non-governmental third-party payors, including private
insurers.

Some  state  laws  require  pharmaceutical  companies  to  comply  with  the  pharmaceutical  industry’s  voluntary  compliance  guidelines  and  the  relevant
compliance  guidance  promulgated  by  the  federal  government  and  may  require  drug  manufacturers  to  report  information  related  to  payments  and  other
transfers of value to physicians and other healthcare providers or marketing expenditures. State and foreign laws also govern the privacy and security of
health  information  in  some  circumstances,  many  of  which  differ  from  each  other  in  significant  ways  and  often  are  not  preempted  by  HIPAA,  thus
complicating compliance efforts.

Efforts  to  ensure  that  our  business  arrangements  with  third  parties  will  comply  with  applicable  healthcare  laws  and  regulations  will  involve  substantial
costs. It is possible that governmental authorities will conclude that our business practices may not comply with current or future statutes, regulations or
case law involving applicable fraud and abuse or other healthcare laws and regulations. If our operations are found to be in violation of any of these laws or
any  other  governmental  regulations  that  may  apply  to  us,  we  may  be  subject  to  significant  civil,  criminal  and  administrative  penalties,  damages,  fines,
imprisonment, exclusion of products from government funded healthcare programs, such as Medicare and Medicaid, and the curtailment or restructuring of
our operations. If any of the physicians or other healthcare providers or entities with whom we expect to do business are found to be not in compliance with
applicable laws, they may be subject to criminal, civil or administrative sanctions, including exclusions from government funded healthcare programs.

The provision of benefits or advantages to physicians to induce or encourage the prescription, recommendation, endorsement, purchase, supply, order or
use of medicinal products is also prohibited in the EU. The provision of benefits or advantages to physicians is governed by the national anti-bribery laws
of EU Member States, such as the U.K. Bribery Act 2010. Infringement of these laws could result in substantial fines and imprisonment.

Payments made to physicians in certain EU Member States must be publicly disclosed. Moreover, agreements with physicians often must be the subject of
prior notification and approval by the physician’s employer, his or her competent professional

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organization and/or the regulatory authorities of the individual EU Member States. These requirements are provided in the national laws, industry codes or
professional  codes  of  conduct,  applicable  in  the  EU  Member  States.  Failure  to  comply  with  these  requirements  could  result  in  reputational  risk,  public
reprimands, administrative penalties, fines or imprisonment.

PYRUKYND® or any product candidate that we commercialize may become subject to unfavorable pricing regulations and third-party reimbursement
practices, which would harm our business.

We  have  built  our  commercial  infrastructure  to  support  the  commercial  launch  of  PYRUKYND®  in  adult  PK  deficiency  in  the  United  States.  We  are
providing access to PYRUKYND® free of charge for eligible patients in the EU and Great Britain through a global managed access program, and we may
provide access to PYRUKYND® for adult patients with PK deficiency in other jurisdictions through the global managed access program on either a free of
charge or for charge basis. The commercial success of PYRUKYND® or of any of our product candidates will depend substantially, both domestically and
abroad,  on  the  extent  to  which  the  costs  of  our  product  candidates  will  be  paid  by  third-party  payors,  including  government  health  administration
authorities and private health coverage insurers. If coverage and reimbursement is not available, or reimbursement is available only to limited levels, we, or
any collaborators, may not be able to successfully commercialize PYRUKYND® or our product candidates. Even if coverage is provided, the approved
reimbursement amount may not be high enough to allow us, or any future collaborators, to establish or maintain pricing sufficient to realize a sufficient
return on our or their investments. In the United States, no uniform policy of coverage and reimbursement for products exists among third-party payors and
coverage  and  reimbursement  for  products  can  differ  significantly  from  payor  to  payor.  As  a  result,  the  coverage  determination  process  is  often  a  time-
consuming and costly process that will require us to provide scientific and clinical support for the use of our products to each payor separately, with no
assurance that coverage and adequate reimbursement will be applied consistently or obtained in the first instance.

There  is  significant  uncertainty  related  to  third-party  payor  coverage  and  reimbursement  of  newly  approved  drugs.  Marketing  approvals,  pricing  and
reimbursement for new drug products vary widely from country to country. Some countries require approval of the sale price of a drug before it can be
marketed.  In  many  countries,  the  pricing  review  period  begins  after  marketing  or  product  licensing  approval  is  granted.  In  some  foreign  markets,
prescription pharmaceutical pricing remains subject to continuing governmental control even after initial approval is granted. In these countries, pricing
negotiations with governmental authorities can take considerable time after the receipt of marketing approval for a product. To obtain reimbursement or
pricing approval in some countries, we may be required to conduct a clinical trial that compares the cost effectiveness of our product candidates to other
available therapies. If reimbursement of our products is unavailable or limited in scope or amount, or if pricing is set at unsatisfactory levels, our ability to
generate revenues and become profitable could be impaired.

As a result, we, or any collaborators, might obtain marketing approval for a product in a particular country, but then be subject to price regulations that
delay commercial launch of the product, possibly for lengthy time periods, which may negatively impact the revenue we are able to generate from the sale
of the product in that country. Adverse pricing limitations may hinder our ability or the ability of any collaborators to recoup our or their investment in one
or more product candidates, even if our product candidates obtain marketing approval.

Patients who are provided medical treatment for their conditions generally rely on third-party payors to reimburse all or part of the costs associated with
their treatment. Therefore, our ability, and the ability of any collaborators, to commercialize PYRUKYND® or any of our product candidates will depend
in part on the extent to which coverage and reimbursement for these products and related treatments will be available from third-party payors. Third-party
payors decide which medications they will cover and establish reimbursement levels. The healthcare industry is acutely focused on cost containment, both
in  the  United  States  and  elsewhere.  Government  authorities  and  other  third-party  payors  have  attempted  to  control  costs  by  limiting  coverage  and  the
amount  of  reimbursement  for  particular  medications,  which  could  affect  our  ability  or  that  of  any  collaborators  to  sell  PYRUKYND®  or  our  product
candidates  profitably.  These  payors  may  not  view  our  products,  if  any,  as  cost-effective,  and  coverage  and  reimbursement  may  not  be  available  to  our
customers,  or  those  of  any  collaborators,  or  may  not  be  sufficient  to  allow  our  products,  if  any,  to  be  marketed  on  a  competitive  basis.  Cost-control
initiatives could cause us, or any collaborators, to decrease the price we, or they, might establish for products, which could result in lower than anticipated
product  revenue.  If  the  prices  for  our  products,  if  any,  decrease  or  if  governmental  and  other  third-party  payors  do  not  provide  coverage  or  adequate
reimbursement, our prospects for revenue and profitability will suffer.

In  addition,  increasingly,  third-party  payors  are  requiring  higher  levels  of  evidence  of  the  benefits  and  clinical  outcomes  of  new  technologies  and  are
challenging the prices charged. We cannot be sure that coverage will be available for PYRUKYND® or any product candidate that we, or any collaborator,
may commercialize and, if available, that the reimbursement rates will be adequate. Further, the net reimbursement for drug products may be subject to
additional reductions if there are changes to laws that presently restrict imports of drugs from countries where they may be sold at lower prices than in the
United States. An inability to promptly obtain coverage and adequate payment rates from both government-funded and private payors for PYRUKYND®
or any of our product candidates for which we, or any collaborator, may obtain marketing approval could

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significantly harm our operating results, our ability to raise capital needed to commercialize products and our overall financial condition.

Current  and  future  healthcare  reform  legislation  may  increase  the  difficulty  and  cost  for  us  and  any  collaborators  to  obtain  reimbursement  and
commercialize our drug candidates.

In  the  United  States  and  foreign  jurisdictions,  there  have  been  a  number  of  legislative  and  regulatory  changes  and  proposed  changes  regarding  the
healthcare  system  that  could  prevent  or  delay  marketing  approval  of  our  product  candidates,  restrict  or  regulate  post-approval  activities  and  affect  our
ability,  or  the  ability  of  any  collaborators,  to  profitably  sell  PYRUKYND®  or  any  other  product  for  which  we,  or  they,  obtain  marketing  approval.  We
expect that current laws, as well as other healthcare reform measures that may be adopted in the future, may result in more rigorous coverage criteria and in
additional  downward  pressure  on  the  price  that  we,  or  any  collaborators,  may  receive  for  any  approved  products.  If  reimbursement  of  our  products  is
unavailable or limited in scope, our business could be materially harmed.

In  March  2010,  President  Obama  signed  into  law  the  Patient  Protection  and  Affordable  Care  Act,  as  amended  by  the  Health  Care  and  Education
Affordability  Reconciliation  Act,  or  collectively,  the  ACA.  In  August  2011,  the  Budget  Control  Act  of  2011,  among  other  things,  created  measures  for
spending reductions by Congress. This legislation resulted in aggregate reductions to Medicare payments to providers of up to 2% per fiscal year, which
will remain in effect for six months into fiscal year 2032. The American Taxpayer Relief Act of 2012, among other things, reduced Medicare payments to
several providers and increased the statute of limitations period for the government to recover overpayments to providers from three to five years. These
laws may result in additional reductions in Medicare and other healthcare funding and otherwise affect the prices we may obtain for any of our product
candidates for which we may obtain regulatory approval or the frequency with which any such product candidate is prescribed or used.

Indeed, under current legislation, the actual reductions in Medicare payments may vary up to 4%. The Consolidated Appropriations Act, which was signed
into  law  by  President  Biden  in  December  2022,  made  several  changes  to  sequestration  of  the  Medicare  program.  Section  1001  of  the  Consolidated
Appropriations  Act  delays  the  4%  Statutory  Pay-As-You-Go  Act  of  2010,  or  PAYGO,  sequester  for  two  years,  through  the  end  of  calendar  year  2024.
Triggered by enactment of the American Rescue Plan Act of 2021, the 4% cut to the Medicare program would have taken effect in January 2023. The
Consolidated Appropriations Act’s health care offset title includes Section 4163, which extends the 2% Budget Control Act of 2011 Medicare sequester for
six months into fiscal year 2032 and lowers the payment reduction percentages in fiscal years 2030 and 2031.

Since enactment of the ACA, there have been, and continue to be, numerous legal challenges and Congressional actions to repeal and replace provisions of
the law. For example, in 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. On November 10, 2020, the Supreme Court heard oral arguments as to whether the individual mandate
portion of the ACA is an essential and inseverable feature of the ACA, and therefore because the mandate was repealed as part of the Tax Cuts and Jobs
Act, the remaining provisions of the ACA are invalid as well. On February 10, 2021, the Biden Administration withdrew the federal government’s support
for overturning the ACA. On June 17, 2021, the Supreme Court struck down the lower court rulings, finding that the plaintiffs did not have standing to
challenge the ACA’s minimum essential coverage provision at issue in the case.

The  Trump  Administration  also  took  executive  actions  to  undermine  or  delay  implementation  of  the  ACA,  including  directing  federal  agencies  with
authorities and responsibilities under the ACA to waive, defer, grant exemptions from, or delay the implementation of any provision of the ACA that would
impose a fiscal or regulatory burden on states, individuals, healthcare providers, health insurers, or manufacturers of pharmaceuticals or medical devices.
On January 28, 2021, however, President Biden revoked these Orders and issued a new Executive Order which directs federal agencies to reconsider rules
and other policies that limit Americans’ access to health care, and consider actions that will protect and strengthen that access. This Executive Order also
directs the U.S. Department of Health and Human Services to create a special enrollment period for the Health Insurance Marketplace in response to the
recent COVID-19 pandemic. We cannot predict how federal agencies will respond to such Executive Orders.

The prices of prescription pharmaceuticals in the United States and foreign jurisdictions are subject to considerable legislative and executive actions
and could impact the prices we obtain for our drug products, if and when approved, and/or the sustainability of those prices.

The prices of prescription pharmaceuticals have also been the subject of considerable discussion in the United States.

To date, there have been several recent U.S. congressional inquiries, as well as proposed and enacted state and federal legislation designed to, among other
things, bring more transparency to pharmaceutical pricing, review the relationship between pricing and manufacturer patient programs, reduce the costs of
drugs under Medicare and Medicaid. To those ends, President Trump issued several executive orders intended to lower the costs of prescription products.
Certain provisions of these orders

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have  been  reflected  in  promulgated  regulations,  including  an  interim  final  rule  implementing  a  most  favored  nation  model  for  prices,  which  would  tie
Medicare Part B payments for certain physician-administered pharmaceuticals to the lowest price paid in other economically advanced countries. Such final
rule has been subject to a nationwide preliminary injunction, and, on December 29, 2021, Centers for Medicare & Medicaid Services, or CMS, issued a
final rule to rescind it. With the issuance of this rule, CMS stated it will explore all options to incorporate value into payments for Medicare Part B drugs
and improve beneficiaries’ access to evidence-based care.

In addition, in October 2020, the HHS and the FDA published a final rule allowing states and other entities to develop a Section 804 Importation Program,
or SIP, to import certain prescription drugs from Canada into the United States. That regulation was challenged in a lawsuit by the Pharmaceutical Research
and Manufacturers of America, or PhRMA, but the case was dismissed by a federal district court in February 2023 after the court found that PhRMA did
not have standing to sue HHS. Nine states (Colorado, Florida, Maine, New Hampshire, New Mexico, North Dakota, Texas, Vermont and Wisconsin) have
passed laws allowing for the importation of drugs from Canada. Certain of these states have submitted Section 804 Importation Program proposals and are
awaiting  FDA  approval.  On  January  5,  2023,  the  FDA  approved  Florida’s  plan  for  Canadian  drug  importation.  Further,  on  November  20,  2020,  HHS
finalized a regulation removing safe harbor protection for price reductions from pharmaceutical manufacturers to plan sponsors under Part D, either directly
or through pharmacy benefit managers, unless the price reduction is required by law. The final rule would eliminate the current safe harbor for Medicare
drug rebates and create new safe harbors for beneficiary point-of-sale discounts and pharmacy benefit manager service fees. It originally was set to go into
effect on January 1, 2022, but with passage of the IRA, has been delayed by Congress to January 1, 2032.

The IRA has implications for Medicare Part D, which is a program available to individuals who are entitled to Medicare Part A or enrolled in Medicare
Part  B  to  give  them  the  option  of  paying  a  monthly  premium  for  outpatient  prescription  drug  coverage.  Among  other  things,  the  IRA  requires
manufacturers  of  certain  drugs  to  engage  in  price  negotiations  with  Medicare  (beginning  in  2026),  with  prices  that  can  be  negotiated  subject  to  a  cap;
imposes rebates under Medicare Part B and Medicare Part D to penalize price increases that outpace inflation (first due in 2023); and replaces the Part D
coverage gap discount program with a new discounting program (beginning in 2025). The IRA permits the Secretary of the HHS to implement many of
these provisions through guidance, as opposed to regulation, for the initial years.

Specifically, with respect to price negotiations, Congress authorized Medicare to negotiate lower prices for certain costly single-source drug and biologic
products that do not have competing generics or biosimilars and are reimbursed under Medicare Part B and Part D. CMS may negotiate prices for ten high-
cost drugs paid for by Medicare Part D starting in 2026, followed by 15 Medicare Part D drugs in 2027, 15 Medicare Part B or Part D drugs in 2028, and
20 Medicare Part B or Part D drugs in 2029 and beyond. This provision applies to drug products that have been approved for at least 9 years and biologics
that  have  been  licensed  for  13  years,  but  it  does  not  apply  to  drugs  and  biologics  that  have  been  approved  for  a  single  rare  disease  or  condition.
Nonetheless, since CMS may establish a maximum price for these products in price negotiations, we would be fully at risk of government action if our
products  are  the  subject  of  Medicare  price  negotiations.  Moreover,  given  the  risk  that  could  be  the  case,  these  provisions  of  the  IRA  may  also  further
heighten the risk that we would not be able to achieve the expected return on our drug products or full value of our patents protecting our products if prices
are set after such products have been on the market for nine years.

Further,  the  legislation  subjects  drug  manufacturers  to  civil  monetary  penalties  and  a  potential  excise  tax  for  failing  to  comply  with  the  legislation  by
offering a price that is not equal to or less than the negotiated “maximum fair price” under the law or for taking price increases that exceed inflation. The
legislation also requires manufacturers to pay rebates for drugs in Medicare Part D whose price increases exceed inflation. The new law also caps Medicare
out-of-pocket drug costs at an estimated $4,000 a year in 2024 and, thereafter beginning in 2025, at $2,000 a year. In addition, the IRA potentially raises
legal risks with respect to individuals participating in a Medicare Part D prescription drug plan who may experience a gap in coverage if they required
coverage  above  their  initial  annual  coverage  limit  before  they  reached  the  higher  threshold,  or  “catastrophic  period”  of  the  plan.  Individuals  requiring
services exceeding the initial annual coverage limit and below the catastrophic period, must pay 100% of the cost of their prescriptions until they reach the
catastrophic  period.  Among  other  things,  the  IRA  contains  many  provisions  aimed  at  reducing  this  financial  burden  on  individuals  by  reducing  the  co-
insurance  and  co-payment  costs,  expanding  eligibility  for  lower  income  subsidy  plans,  and  price  caps  on  annual  out-of-pocket  expenses,  each  of  which
could have potential pricing and reporting implications.

In June 2023, Merck filed a lawsuit against the HHS and CMS asserting that, among other things, the IRA’s Drug Price Negotiation Program for Medicare
constitutes an uncompensated taking in violation of the Fifth Amendment of the Constitution. Subsequently, a number of other parties, including the U.S.
Chamber of Commerce and pharmaceutical companies, also filed lawsuits in various courts with similar constitutional claims against HHS and CMS. We
expect that litigation involving these and other provisions of the IRA will continue, with unpredictable and uncertain results.

Accordingly, while it is currently unclear how the IRA will be effectuated, we cannot predict with certainty what impact any federal or state health reforms
will have on us, but such changes could impose new or more stringent regulatory requirements

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on our activities or result in reduced reimbursement for our products, any of which could adversely affect our business, results of operations and financial
condition.

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.  In  addition,
regional health care authorities and individual hospitals are increasingly using bidding procedures to determine what pharmaceutical products and which
suppliers will be included in their prescription drug and other health care programs. These measures could reduce the ultimate demand for our products,
once approved, or put pressure on our product pricing. 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 or product candidates or additional pricing pressures.

In the EU, similar political, economic and regulatory developments may affect our ability to profitably commercialize our product candidates, if approved.
In markets outside of the United States and the EU, reimbursement and healthcare payment systems vary significantly by country, and many countries have
instituted price ceilings on specific products and therapies. In many countries, including those of the EU, the pricing of prescription pharmaceuticals is
subject  to  governmental  control  and  access.  In  these  countries,  pricing  negotiations  with  governmental  authorities  can  take  considerable  time  after  the
receipt of marketing approval for a product. To obtain reimbursement or pricing approval in some countries, we or our collaborators may be required to
conduct a clinical trial that compares the cost-effectiveness of our product to other available therapies. If reimbursement of our product is unavailable or
limited in scope or amount, or if pricing is set at unsatisfactory levels, our business could be materially harmed.

We are subject to U.S. and foreign export control, import, sanctions, anti-corruption and anti-money laundering laws with respect to our operations
and non-compliance with such laws can subject us to criminal and/or civil liability and harm our business.

We are subject to export control and import laws and regulations, including the U.S. Export Administration Regulations, U.S. Customs regulations, various
economic  and  trade  sanctions  regulations  administered  by  the  U.S.  Treasury  Department’s  Office  of  Foreign  Assets  Control,  the  U.S.  Foreign  Corrupt
Practices Act of 1977, as amended, the U.S. domestic bribery statute contained in 18 U.S.C. § 201, the U.S. Travel Act, the USA PATRIOT Act, and other
state and national anti-bribery and anti-money laundering laws in countries in which we conduct activities. Anti-corruption laws are interpreted broadly and
prohibit companies and their employees, agents, third-party intermediaries, joint venture partners and collaborators from authorizing, promising, offering,
or providing, directly or indirectly, improper payments or benefits to recipients in the public or private sector. We may have direct or indirect interactions
with officials and employees of government agencies or government-affiliated hospitals, universities, and other organizations. In addition, we may engage
third party intermediaries to promote our clinical research activities abroad and/or to obtain necessary permits, licenses, and other regulatory approvals. We
can  be  held  liable  for  the  corrupt  or  other  illegal  activities  of  these  third-party  intermediaries,  our  employees,  representatives,  contractors,  partners,  and
agents, even if we do not explicitly authorize or have actual knowledge of such activities.

Noncompliance with such laws could subject us to whistleblower complaints, investigations, sanctions, settlements, prosecution, other enforcement actions,
disgorgement of profits, significant fines, damages, other civil and criminal penalties or injunctions, suspension and/or debarment from contracting with
certain  persons,  the  loss  of  export  privileges,  reputational  harm,  adverse  media  coverage,  and  other  collateral  consequences.  If  any  subpoenas,
investigations, or other enforcement actions are launched, or governmental or other sanctions are imposed, or if we do not prevail in any possible civil or
criminal litigation, our business, results of operations and financial condition could be materially harmed. In addition, responding to any action will likely
result in a materially significant diversion of management’s attention and resources and significant defense and compliance costs and other professional
fees.  In  certain  cases,  enforcement  authorities  may  even  cause  us  to  appoint  an  independent  compliance  monitor  which  can  result  in  added  costs  and
administrative burdens.

With the passage of the CREATES Act, we are exposed to possible litigation and damages by competitors who may claim that we are not providing
sufficient quantities of our approved products on commercially reasonable, market-based terms for testing in support of their ANDAs and 505(b)(2)
applications.

In  December  2019,  former  President  Trump  signed  legislation  intended  to  facilitate  the  development  of  generic  and  biosimilar  products.  The  bill,
previously known as the CREATES Act, authorizes sponsors of ANDAs and 505(b)(2) applications to file lawsuits against companies holding NDAs that
decline  to  provide  sufficient  quantities  of  an  approved  reference  drug  on  commercially  reasonable,  market-based  terms.  Drug  products  on  FDA’s  drug
shortage list are exempt from these new provisions unless the product has been on the list for more than six continuous months or the FDA determines that
the supply of the product will help alleviate or prevent a shortage. For the purposes of the statute, the term “commercially reasonable, market-

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based terms” is defined as (1) the nondiscriminatory price at or below the most recent wholesale acquisition cost for the product, (2) a delivery schedule
that meets the statutorily defined timetable, and (3) no additional conditions on the sale.

To bring an action under the statute, an ANDA or 505(b)(2) sponsor must take certain steps to request the reference product, which, in the case of products
covered by a Risk Evaluation and Mitigation Strategy with elements to assure safe use, include obtaining authorization from the FDA for the acquisition of
the reference product. If the sponsor does bring an action for failure to provide a reference product, there are certain affirmative defenses available to the
NDA holder, which must be shown by a preponderance of evidence. If the sponsor prevails in litigation, it is entitled to a court order directing the NDA
holder to provide, without delay, sufficient quantities of the applicable product on commercially reasonable, market-based terms, plus reasonable attorney
fees and costs.

Additionally,  the  statutory  provisions  authorize  a  federal  court  to  award  the  product  developer  an  amount  “sufficient  to  deter”  the  NDA  holder  from
refusing to provide sufficient product quantities on commercially reasonable, market-based terms if the court finds, by a preponderance of the evidence,
that the NDA holder did not have a legitimate business justification to delay providing the product or failed to comply with the court’s order.

Although  we  intend  to  comply  fully  with  the  terms  of  these  new  statutory  provisions,  we  are  still  exposed  to  potential  litigation  and  damages  by
competitors who may claim that we are not providing sufficient quantities of our approved products on commercially reasonable, market-based terms for
testing in support of ANDAs and 505(b)(2) applications. Such litigation would subject us to additional costs, damages and reputational harm, which could
lead to lower revenues. The CREATES Act may enable generic competition with PYRUKYND® and any of our product candidates, if approved, which
could impact our ability to maximize product revenue.

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.

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

Risks Related to Employee Matters and Managing Growth

Our future success depends on our ability to retain our key executives and scientific leadership and to attract, retain and motivate qualified personnel.

We are highly dependent on the principal members of our management and scientific teams, each of whom is employed “at will,” meaning we or they may
terminate the employment relationship at any time. We do not maintain “key person” insurance for any of our executives or other employees. The loss of
the services of any of these persons could impede the achievement of our research, development and commercialization objectives. We cannot predict the
likelihood, timing or effect of future transitions among our executive leadership.

Recruiting and retaining qualified scientific, clinical, manufacturing, regulatory and sales and marketing personnel will also be critical to our success. We
may  not  be  able  to  attract  and  retain  these  personnel  on  acceptable  terms  given  the  competition  among  numerous  pharmaceutical  and  biotechnology
companies and universities and research institutions for similar personnel. Our consultants and advisors, including our scientific co-founders, who assist us
in formulating our research and development and commercialization strategy may be employed by employers other than us and may have commitments
under  consulting  or  advisory  contracts  with  other  entities  that  may  limit  their  availability  to  us.  Furthermore,  the  recent  COVID-19  pandemic  and  our
flexible workplace policy allowing employees to work from home may make it difficult for us to maintain our corporate culture.

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In the future we may experience growth in the number of our development, regulatory and sales and marketing personnel. To manage any anticipated future
growth, we must continue to implement and improve our managerial, operational and financial systems, expand our facilities and continue to recruit and
train additional qualified personnel. Any inability to manage growth could delay the execution of our business plans or disrupt our operations.

Our employees may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements, which
could have a material adverse effect on our business.

We  are  exposed  to  the  risk  of  employee  fraud  or  other  misconduct.  Misconduct  by  employees  could  include  intentional  failures  to  comply  with  FDA
regulations  or  regulations  in  other  jurisdictions,  provide  accurate  information  to  the  FDA  or  other  regulatory  authorities,  comply  with  manufacturing
standards  we  have  established,  comply  with  federal  and  state  healthcare  fraud  and  abuse  laws  and  regulations,  report  financial  information  or  data
accurately, disclose unauthorized activities to us, or comply with securities laws. Employee misconduct could also involve the improper use of information
obtained in the course of clinical trials or interactions with the FDA or other regulatory authorities, including for illegal insider trading activities, which
could  result  in  regulatory  sanctions  and  serious  harm  to  our  reputation.  We  have  adopted  a  Code  of  Business  Conduct  and  Ethics,  but  it  is  not  always
possible  to  identify  and  deter  employee  misconduct,  and  the  precautions  we  take  to  detect  and  prevent  this  activity  may  not  be  effective  in  controlling
unknown or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits stemming from a failure to be in
compliance with such laws or regulations. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our
rights,  those  actions  could  have  a  significant  impact  on  our  business  and  results  of  operations,  including  the  imposition  of  significant  fines  or  other
sanctions.

Risks Related to Our Common Stock and Other Matters

Provisions in our corporate 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 corporate charter and our bylaws may discourage, delay or prevent a merger, acquisition or other change in control of us that stockholders
may consider favorable, including transactions in which you might otherwise receive a premium for your shares. These provisions could also limit the price
that investors might be willing to pay in the future for shares of our common stock, thereby depressing the market price of our common stock. In addition,
because our Board of Directors is responsible for appointing the members of our management team, 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. Among other things, these provisions:

•

•

•

•

•

•

•

•

establish a classified board of directors such that not all members of the board are elected at one time;

allow the authorized number of our directors to be changed only by resolution of our Board of Directors;

limit the manner in which stockholders can remove directors from our Board of Directors;

establish  advance  notice  requirements  for  stockholder  proposals  that  can  be  acted  on  at  stockholder  meetings  and  nominations  to  our  Board  of
Directors;

require that stockholder actions must be effected at a duly called stockholder meeting and prohibit actions by our stockholders by written consent;

limit who may call stockholder meetings;

authorize our Board of Directors to issue preferred stock without stockholder approval, which could be used to institute a shareholder rights plan,
or so-called “poison pill,” that would work to dilute the stock ownership of a potential hostile acquirer, effectively preventing acquisitions that
have not been approved by our Board of Directors; and

require  the  approval  of  the  holders  of  at  least  75%  of  the  votes  that  all  our  stockholders  would  be  entitled  to  cast  to  amend  or  repeal  certain
provisions of our charter or bylaws.

Moreover, because we are incorporated in Delaware, we are governed by the provisions of Section 203 of the Delaware General Corporation Law, which
prohibits a person who owns in excess of 15% of our outstanding voting stock from merging or combining with us for a period of three years after the date
of  the  transaction  in  which  the  person  acquired  in  excess  of  15%  of  our  outstanding  voting  stock,  unless  the  merger  or  combination  is  approved  in  a
prescribed manner.

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The price of our common stock is likely to be volatile, which could result in substantial losses for purchasers of our common stock.

The trading price of our common stock has been, and may continue to be, volatile and could be subject to wide fluctuations in response to various factors,
some of which are beyond our control. For example, since January 1, 2015 the closing price of our common stock on the Nasdaq Global Select Market has
ranged  from  $17.06  per  share  to  $135.01  per  share.  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. While the full extent of the economic
impact of the recent COVID-19 pandemic or recent increases in inflation rates (particularly as it relates to clinical- or manufacturing-related costs) may be
difficult to assess or predict, such impacts have already caused, and are likely to result in further, significant disruption of global financial markets, which
may reduce our ability to access capital either at all or on favorable terms. If we are unable to raise additional funds through equity or debt financings when
needed or on attractive terms, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts, or grant
rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.

The market price for our common stock may be influenced by many factors, including:

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•

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•

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•

•

•

our success in launching and commercializing PYRUKYND®;

the decision to focus our efforts on our rare disease business following the sale of our oncology business to Servier;

the evolution of our research organization;

announcements  by  us  or  our  competitors  of  significant  acquisitions,  in-licensing  arrangements,  strategic  partnerships,  joint  ventures,
collaborations or capital commitments;

the timing and results of clinical trials of product candidates, or our competitors’ product candidates;

regulatory actions with respect to our product or product candidates or our competitors’ products and product candidates;

commencement or termination of collaborations for our development programs;

failure or discontinuation of any of our development programs;

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 any of our products, product candidates or development programs;

the results of our efforts to develop additional product candidates and products;

actual or anticipated changes in estimates as to financial results or development timelines;

announcement or expectation of additional financing efforts;

sales of our common stock by us, our insiders or other stockholders, including shares issuable upon exercise of outstanding stock options and upon
vesting of stock units under our stock incentive plans;

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

changes in estimates, evaluations or recommendations by securities analysts, that cover our stock or the failure by one or more securities analysts
to continue to cover our stock;

changes in the structure of healthcare payment systems;

the societal and economic impact of public health epidemics or pandemics, such as the recent COVID-19 pandemic and any recession, depression
or sustained market event resulting from such epidemics or pandemics;

• market conditions in the pharmaceutical and biotechnology sectors;

•

•

general economic, industry and market conditions; and

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

In the past, following periods of volatility in the market price of a company's securities, securities class-action litigation often has been instituted against
that company. Such litigation, if instituted against us, could cause us to incur substantial costs to defend such claims and divert managements' attention and
resources, which could seriously harm our business, financial condition, results of operations and prospects.

We also cannot guarantee that an active trading market for our shares will be sustained. An inactive trading market for our common stock may impair our
ability to raise capital to continue to fund our operations by selling shares and may impair our ability to acquire other companies or technologies by using
our shares as consideration.

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Our financial condition and operating results also may fluctuate from quarter to quarter and year to year due to a variety of factors, many of which are
beyond our control. Accordingly, you should not rely upon the results of any quarterly or annual periods as indications of future operating performance.

Our  executive  officers,  directors  and  principal  stockholders  maintain  the  ability  to  significantly  influence  all  matters  submitted  to  stockholders  for
approval.

As  of  December  31,  2023,  our  executive  officers,  directors  and  principal  stockholders,  in  the  aggregate,  beneficially  owned  shares  representing  a
significant percentage of our capital stock. As a result, if these stockholders were to choose to act together, they would be able to significantly influence all
matters submitted to our stockholders for approval, as well as our management and affairs. For example, these persons could significantly influence the
election of directors and approval of any merger, consolidation or sale of all or substantially all of our assets. This concentration of voting power could
delay or prevent an acquisition of our company on terms that other stockholders may desire.

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

Under Section 382 of the Code and corresponding provisions of state law, if a company undergoes an “ownership change,” generally defined as a greater
than  50%  change  (by  value)  in  its  equity  ownership  by  certain  stockholders  over  a  three-year  period,  the  company’s  ability  to  use  its  pre-change  net
operating loss carryforwards and other pre-change tax attributes (such as research tax credits) to offset its post-change taxable income may be limited. Our
prior equity offerings and other changes in our stock ownership, some of which are outside of our control, may have resulted or could in the future result in
an ownership change. We completed a review of our changes in ownership through December 31, 2023, and determined that we did not have a qualified
ownership change since our last review as of December 31, 2022. Future ownership changes under Section 382 may limit the amount of net operating loss
and tax credit carryforwards that we could potentially utilize to reduce future tax liabilities.

There is also a risk that due to regulatory changes, such as suspensions on the use of net operating losses, or other unforeseen reasons, our existing net
operating losses could expire or otherwise become unavailable to offset future income tax liabilities. The Tax Act, as amended by the Coronavirus Aid,
Relief,  and  Economic  Security  Act  includes  changes  to  U.S.  federal  tax  rates  and  the  rules  governing  net  operating  loss  carryforwards  that  may
significantly impact our ability to utilize our net operating losses to offset taxable income in the future. In addition, state net operating losses generated in
one state cannot be used to offset income generated in another state. For these reasons we may be unable to use a material portion of our net operating
losses and other tax attributes.

Our effective tax rate may fluctuate, and we may incur obligations in tax jurisdictions in excess of accrued amounts.

We are subject to taxation in numerous U.S. states and territories. As a result, our effective tax rate is derived from a combination of applicable tax rates in
the various places that we operate. In preparing our financial statements, we estimate the amount of tax that will become payable in each of such places.
Nevertheless, our effective tax rate may be different from previous periods or our current expectations due to numerous factors, including as a result of
changes  in  the  mix  of  our  profitability  from  state  to  state,  the  results  of  examinations  and  audits  of  our  tax  filings,  our  inability  to  secure  or  sustain
acceptable  agreements  with  tax  authorities,  changes  in  accounting  for  income  taxes  and  changes  in  tax  laws.  Any  of  these  factors  may  result  in  tax
obligations in excess of amounts accrued in our financial statements.

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

We have incurred and will continue to incur significant legal, accounting and other expenses as a public company. The Sarbanes-Oxley Act of 2002, the
Dodd-Frank Wall Street Reform and Consumer Protection Act, the listing requirements of The Nasdaq Global Select Market and other applicable securities
rules  and  regulations  impose  various  requirements  on  public  companies,  including  establishment  and  maintenance  of  effective  disclosure  and  financial
controls and corporate governance practices. Stockholder activism, the current political environment and the current high level of government intervention
and  regulatory  reform  may  lead  to  substantial  new  regulations.  Our  management  and  other  personnel  devote,  and  will  need  to  continue  to  devote,  a
substantial  amount  of  time  to  these  compliance  initiatives.  Moreover,  these  rules  and  regulations  increase  our  legal  and  financial  compliance  costs  and
make some activities more time-consuming and costly.

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

We have never declared or paid cash dividends on our capital stock. We currently intend to retain all of our future earnings, if any, to finance the growth
and development of our business. As a result, capital appreciation, if any, of our common stock will be the sole source of gain for our stockholders for the
foreseeable future.

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Item 1B. Unresolved Staff Comments

None.

Item 1C. Cybersecurity

We have certain processes for assessing, identifying and managing cybersecurity risks, which are built into our overall information technology function and
are designed to help protect our information assets and operations from internal and external cyber threats, and protect employee, collaborator and patient
information  from  unauthorized  access  or  attack,  as  well  as  secure  our  networks  and  systems.  Such  processes  include  physical,  procedural  and  technical
safeguards, response plans, regular tests on our systems, incident simulations and routine review of our policies and procedures to identify risks and refine
our practices. We engage certain external parties, including consultants, computer security firms and risk management advisors, peer companies, industry
groups  and  governance  experts,  to  enhance  our  cybersecurity  oversight  including  by  gaining  valuable  insights  into  the  ever-evolving  cybersecurity
landscape.  We  consider  the  internal  risk  oversight  programs  of  third-party  service  providers  before  engaging  them  in  order  to  help  protect  us  from  any
related vulnerabilities.

We  do  not  believe  that  there  are  currently  any  known  risks  from  cybersecurity  threats  that  are  reasonably  likely  to  materially  affect  us  or  our  business
strategy, results of operations or financial condition.

The Audit Committee of our Board of Directors provides direct oversight over cybersecurity risk, and provides updates to the Board of Directors regarding
such oversight. The Audit Committee receives periodic updates from management regarding cybersecurity matters, and is notified between such updates
regarding significant new cybersecurity threats or incidents.

Our Vice President, Information Technology and Facilities, or the VP of IT, leads the operational oversight of company-wide cybersecurity strategy, policy,
standards and processes and works across relevant departments to assess and help prepare us and our employees to address cybersecurity risks. Our VP of
IT  has  worked  in  the  information  technology  field  for  over  20  years  at  both  biotechnology  companies  and  management  consulting  firms,  and  holds  a
Bachelor of Science in Management and a Masters of Business Administration. We also maintain a team of experienced senior level engineers who design,
implement and operate our information technology ecosystem, helping to implement cybersecurity best practices throughout our information technology
infrastructure and governance processes. We periodically assess our processes against cybersecurity frameworks, such as the National Institute of Standards
and Technology, or NIST, Cybersecurity Framework, Center for Internet Security, or CIS, Controls, and International Organization for Standardization, or
ISO, 27001.

In  an  effort  to  deter  and  detect  cyber  threats,  we  annually  provide  all  employees,  including  part-time  and  temporary  employees,  with  a  data  protection,
cybersecurity  and  incident  response  and  prevention  training  and  compliance  program,  which  covers  timely  and  relevant  topics,  including  social
engineering,  phishing,  password  protection,  confidential  data  protection,  asset  use  and  mobile  security,  and  educates  employees  on  the  importance  of
reporting all incidents immediately. We also use technology-based tools that are designed to mitigate cybersecurity risks and to bolster our employee-based
cybersecurity programs.

Item 2. Properties

We  currently  lease  approximately  146,000  square  feet  at  88  Sidney  Street,  43,000  square  feet  at  64  Sidney  Street,  and  13,000  square  feet  at  38  Sidney
Street, Cambridge, Massachusetts. All leases, as amended, expire on February 29, 2028. At the end of the initial lease period, we have the option to extend
the leases at all facilities for two consecutive five-year periods at the fair market rent at the time of the extension. In August 2021, we entered into a long-
term sublease agreement for the 13,000 square feet at 38 Sidney Street, Cambridge, Massachusetts, with the term of the lease running through December
2024. In April 2022, we entered into a long-term sublease agreement for 27,000 square feet of office space at 64 Sidney Street, Cambridge, Massachusetts,
with the term of the lease running through April 2025. In May 2023, we entered into a long-term sublease agreement for 7,407 square feet of office space
on the first floor of 64 Sidney Street, Cambridge, Massachusetts, with the term of the lease running through April 2025. We believe our existing facilities
are adequate for our current needs.

Item 3. Legal Proceedings

As  of  December  31,  2023,  we  were  not  a  party  to  any  material  legal  or  arbitration  proceedings.  No  governmental  proceedings  are  pending  or,  to  our
knowledge, contemplated against us. We are not a party to any material proceedings in which any director, member of senior management or affiliate of
ours is either a party adverse to us or our subsidiaries or has a material interest adverse to us or our subsidiaries.

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

Our common stock has been publicly traded on the Nasdaq Global Select Market under the symbol “AGIO” since July 24, 2013. Prior to that time, there
was no public market for our common stock.

Holders

As of February 9, 2024, there were approximately nine holders of record of our common stock. This number does not include beneficial owners whose
shares are held by nominees in street name.

Dividends

We  have  not  declared  or  paid  any  cash  dividends  on  our  capital  stock  since  our  inception.  We  intend  to  retain  future  earnings,  if  any,  to  finance  the
operation and expansion of our business and do not anticipate paying any cash dividends to holders of common stock in the foreseeable future.

Securities Authorized for Issuance under Equity Compensation Plans

Information about our equity compensation plans is incorporated herein by reference to Item 12, Security  Ownership  of  Certain  Beneficial  Owners  and
Management and Related Stockholder Matters, of this Annual Report on Form 10-K.

Performance Graph

The following performance graph and related information shall not be deemed to be “soliciting material” or to be “filed” with the Securities and Exchange
Commission, or SEC, for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or the Exchange Act, or otherwise subject to the
liabilities under that Section, nor shall such information be incorporated by reference into any future filing under the Exchange Act or the Securities Act of
1933, as amended, or the Securities Act, except to the extent that we specifically incorporate it by reference into such filing.

The  following  graph  compares  the  performance  of  our  common  stock  to  the  NASDAQ  Composite  Index  and  the  NASDAQ  Biotechnology  Index  from
December  31,  2018  through  December  31,  2023.  The  comparison  assumes  $100  was  invested  after  the  market  closed  on  December  31,  2018  in  our
common stock and in each of the foregoing indices, and it assumes reinvestment of dividends, if any. The stock price performance included in this graph is
not necessarily indicative of future stock price performance.

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Recent Sales of Unregistered Securities

None.

Purchases of Equity Securities by the Issuer or Affiliated Purchasers

None.

Item 6. Reserved.

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

You  should  read  the  following  discussion  and  analysis  of  our  financial  condition  and  results  of  operations  together  with  our  consolidated  financial
statements  and  the  related  notes  and  other  financial  information  included  elsewhere  in  this  Annual  Report  on  Form  10-K.  Some  of  the  information
contained in this discussion and analysis or set forth elsewhere in this Annual Report on Form 10-K, including information with respect to our plans and
strategy  for  our  business,  includes  forward-looking  statements  that  involve  risks  and  uncertainties.  You  should  review  "Item  1A,  Risk  Factors"  of  this
Annual  Report  on  Form  10-K  for  a  discussion  of  important  factors  that  could  cause  actual  results  to  differ  materially  from  the  results  described  in  or
implied by the forward-looking statements contained in the following discussion and analysis.

Overview

We  are  a  biopharmaceutical  company  committed  to  transforming  patients’  lives  through  leadership  in  the  field  of  cellular  metabolism,  with  the  goal  of
creating differentiated medicines for rare diseases, with a focus on classical hematology. With a history of focused study on cellular metabolism, we have a
deep and mature understanding of this biology, which is involved in the healthy functioning of nearly every system in the body. Building on this expertise,
these  learnings  can  be  rapidly  applied  to  our  clinical  trials  with  the  goal  of  developing  medicines  that  can  have  a  significant  impact  for  patients.  We
accelerate the impact of our portfolio by cultivating connections with patient communities, healthcare professionals, partners and colleagues to discover,
develop and deliver potential therapies for rare diseases.

The lead product candidate in our portfolio, PYRUKYND® (mitapivat), is an activator of both wild-type and mutant pyruvate kinase, or PK, enzymes for
the  potential  treatment  of  hemolytic  anemias.  In  February  2022,  the  U.S.  Food  and  Drug  Administration,  or  FDA,  approved  PYRUKYND®  for  the
treatment  of  hemolytic  anemia  in  adults  with  PK  deficiency  in  the  United  States.  In  November  2022,  we  received  marketing  authorization  from  the
European  Commission  for  PYRUKYND®  for  the  treatment  of  PK  deficiency  in  adult  patients  in  the  European  Union,  or  EU.  In  December  2022,  we
received marketing authorization in Great Britain for PYRUKYND® for the treatment of PK deficiency in adult patients under the European Commission
Decision Reliance Procedure. In addition, we are currently evaluating PYRUKYND® in clinical trials for the treatment of thalassemia, sickle cell disease,
or SCD, and in pediatric patients with PK deficiency. We are also developing (i) AG-946, a novel PK activator, for the potential treatment of lower-risk
myelodysplastic  syndrome,  or  LR  MDS,  and  hemolytic  anemias,  and  (ii)  AG-181,  our  phenylalanine  hydroxylase,  or  PAH,  stabilizer  for  the  potential
treatment of phenylketonuria, or PKU.

In  addition  to  the  aforementioned  development  programs,  in  July  2023  we  entered  into  a  license  agreement  with  Alnylam  Pharmaceuticals,  Inc.,  or
Alnylam for the development and commercialization of products containing or comprised of an siRNA preclinical development candidate discovered by
Alnylam  and  targeting  the  transmembrane  serine  protease  6,  or  TMPRSS6,  gene  and  we  intend  to  pursue  development  of  a  licensed  product  for  the
potential disease-modifying treatment of patients with polycythemia vera, or PV, a rare blood disorder.

Alnylam License Agreement

In accordance with the license agreement with Alnylam, in the year ended December 31, 2023, we made an up-front payment to Alnylam and recognized
in-process research and development of $17.5 million which was recorded in research and development expense within our Consolidated Statements of
Operations  and  classified  as  investing  activities  within  our  Consolidated  Statements  of  Cash  Flows.  We  will  also  pay  Alnylam  for  certain  expenses
associated with the development of the TMPRSS6 gene and these will be recorded in our Consolidated Statements of Operations as incurred. Additionally,
we are responsible to pay up to $130.0 million in potential development and regulatory milestones, in addition to sales milestones as well as tiered royalties
on annual net sales, if any, of licensed products, which may be subject to specified reductions and offsets. Because the acquired assets under the license
agreement with Alnylam do not meet the definition of a business in accordance with ASC 805, Business Combinations, we accounted for the agreement as
an asset acquisition.

Sale of Oncology Business to Servier Pharmaceuticals, LLC (Servier) and Sale of Contingent Payments

On  March  31,  2021,  we  completed  the  sale  of  our  oncology  business  to  Servier  Pharmaceuticals,  LLC,  or  Servier,  which  represented  a  discontinued
operation. The transaction included the sale of our oncology business, including TIBSOVO®, our clinical-stage product candidates vorasidenib, AG-270
and AG-636, and our oncology research programs for a payment of approximately $1.8 billion in cash at the closing, subject to certain adjustments, and a
payment of $200.0 million in cash, if, prior to January 1, 2027, vorasidenib is granted new drug application approval from the FDA with an approved label
that permits vorasidenib’s use as a single agent for the adjuvant treatment of patients with Grade 2 glioma that have an isocitrate dehydrogenase 1 or 2
mutation  (and,  to  the  extent  required  by  such  approval,  the  vorasidenib  companion  diagnostic  test  is  granted  an  FDA  premarket  approval),  as  well  as  a
royalty  of  5%  of  U.S.  net  sales  of  TIBSOVO®  from  the  close  of  the  transaction  through  loss  of  exclusivity,  and  a  royalty  of  15%  of  U.S.  net  sales  of
vorasidenib  from  the  first  commercial  sale  of  vorasidenib  through  loss  of  exclusivity,  with  these  royalties  referred  to  as  contingent  payments  and
recognized as income when

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realizable. Servier also acquired our co-commercialization rights for Bristol Myers Squibb’s IDHIFA® and the right to receive a $25.0 million potential
milestone payment under our prior collaboration agreement with Celgene Corporation, or Celgene, and Servier is responsible for conducting certain clinical
development activities within the IDHIFA® development program.

In October 2022, we sold our rights to future contingent payments associated with the royalty of 5% of U.S. net sales of TIBSOVO® from the close of the
transaction through the loss of exclusivity to entities affiliated with Sagard Healthcare Partners, or Sagard, and recognized income of $127.9 million within
the gain on sale of contingent payments line item in our consolidated statements of operations for the year ended December 31, 2022. We retain our rights
to the potential milestone payment and royalties from Servier if a new drug application for vorasidenib is approved by the FDA.

In November 2023, Servier announced that it was planning to submit a new drug application, or NDA, for vorasidenib for the treatment of IDH-mutant
diffuse glioma to the FDA by the end of 2023 and to the European Medicines Agency, or EMA, in early 2024.

The oncology business met the criteria within Accounting Standards Codification 205-20 to be reported as discontinued operations because the transaction
was a strategic shift in business that had a major effect on our operations and financial results. Therefore, we have reported the historical results of the
oncology  business  including  the  results  of  operations  and  cash  flows  as  discontinued  operations,  and  related  assets  and  liabilities  were  retrospectively
reclassified  as  assets  and  liabilities  of  discontinued  operations  for  all  periods  presented  herein.  Refer  to  Note  15,  Discontinued  Operations  of  our
consolidated financial statements included in this Annual Report on Form 10-K for additional information. A more complete description of our business
prior to the consummation of the transaction is included in Item 1. “Business”, in Part I of our Annual Report on Form 10-K for the year ended December
31, 2020 that was previously filed with the Securities and Exchange Commission, or SEC, on February 25, 2021.

Financial Operations Overview

General

Since  inception,  our  operations  have  primarily  focused  on  organizing  and  staffing  our  company,  business  planning,  raising  capital,  assembling  our  core
capabilities in cellular metabolism and classical hematology, identifying potential product candidates, undertaking preclinical studies, conducting clinical
trials,  establishing  a  commercial  infrastructure,  preparing  for  and  executing  on  the  commercial  launch  of  PYRUKYND®  and,  prior  to  the  sale  of  our
oncology business to Servier on March 31, 2021, marketing TIBSOVO® and IDHIFA®. Through March 31, 2021, we financed our operations primarily
through  proceeds  from  the  sale  of  our  royalty  rights,  commercial  sales  of  TIBSOVO®,  funding  received  from  our  collaboration  agreements,  private
placements of our preferred stock, our initial public offering of our common stock and concurrent private placement of common stock to an affiliate of
Celgene, and our follow-on public offerings. Following the sale of our oncology business to Servier on March 31, 2021, we have financed and expect to
continue to finance our operations primarily through cash on hand, royalty payments from Servier with respect to U.S. net sales of TIBSOVO® prior to the
sale of these contingent payments to Sagard, proceeds from the sale of contingent payments to Sagard, a potential milestone payment and royalties from
Servier  if  a  new  drug  application  for  vorasidenib  is  approved  by  the  FDA  with  a  label  that  permits  vorasidenib's  use  as  a  single  agent  for  the  adjuvant
treatment of patients with Grade 2 glioma that have an isocitrate dehydrogenase 1 or 2 mutation, the actual and potential future sales of PYRUKYND®
and,  potentially,  collaborations,  strategic  alliances,  licensing  arrangements  and  other  nondilutive  strategic  transactions.  In  addition,  we  may  pursue
opportunistic debt offerings, and equity or equity-linked offerings.

Additionally, since inception, we have incurred significant operating losses. Our net loss for the year ended December 31, 2023 was $352.1 million, our net
loss  for  the  year  ended  December  31,  2022  was  $231.8  million  and  our  net  income  for  the  year  ended  December  31,  2021  was  $1.6  billion.  As  of
December 31, 2023, we had an accumulated deficit of $822.6 million. The net income we generated in the year ended December 31, 2021 was due to the
sale of our oncology business to Servier. We expect to incur significant expenses and net losses until such time we are able to report profitable results. Our
net  losses  may  fluctuate  significantly  from  year  to  year.  We  expect  that  we  will  continue  to  incur  significant  expenses  as  we  continue  to  advance  and
expand  clinical  development  and  commercialization  activities  for  PYRUKYND®;  advance  and  expand  clinical  development  of  AG-946;  continue  to
prioritize advancement of AG-181, our PAH stabilizer; initiate preclinical development of a licensed siRNA development candidate pursuant to our license
agreement with Alnylam; expand and protect our intellectual property portfolio, including by in-licensing or acquiring assets for pipeline growth; and hire
additional commercial and development personnel.

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Revenues

Our wholly owned product, PYRUKYND®, received approval from the FDA on February 17, 2022, for the treatment of hemolytic anemia in adults with
PK  deficiency  in  the  United  States.  Upon  FDA  approval  of  PYRUKYND®  in  the  United  States,  we  began  generating  product  revenue  from  sales  of
PYRUKYND®.  We  sell  PYRUKYND®  to  a  limited  number  of  specialty  distributors  and  specialty  pharmacy  providers,  or  collectively,  the  Customers.
These Customers subsequently resell PYRUKYND® to pharmacies or dispense PYRUKYND® directly to patients. In addition to distribution agreements
with  Customers,  we  enter  into  arrangements  with  healthcare  providers  and  payors  that  provide  for  government-mandated  and/or  privately-negotiated
rebates, chargebacks and discounts with respect to the purchase of PYRUKYND®. For further discussion of our revenue recognition policy, see Note 2,
Summary of Significant Accounting Polices and Note 8, Product Revenue, to the consolidated financial statements in this Annual Report on Form 10-K.

In the future, we expect to continue to generate revenue from a combination of product sales, and we may potentially generate revenue from royalties on
product sales, milestone payments, and upfront payments under existing arrangements or future collaborations or licensing agreements.

Cost of Sales

Cost of sales consists primarily of manufacturing costs for sales of PYRUKYND®. Based on our policy to expense costs associated with the manufacturing
of our products prior to regulatory approval, certain of the manufacturing costs associated with product shipments of PYRUKYND® recorded during the
years ended December 31, 2023 and December 31, 2022 were expensed prior to February 17, 2022, and, therefore, are not included in costs of sales during
the years ended December 31, 2023 and December 31, 2022.

Research and Development Expenses

Research and development activities are central to our business model. Product candidates in later stages of clinical development generally have higher
development costs than those in earlier stages of clinical development, primarily due to the increased size and duration of later-stage clinical trials. We
expect  research  and  development  costs  related  to  our  portfolio  to  increase  as  our  product  candidate  development  programs  progress.  However,  the
successful development of our product candidates is highly uncertain. As such, 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 remainder of the development and to commercialize these product candidates. We are
unable to predict the amount of net cash inflows from PYRUKYND® or any of our product candidates. This is due to the numerous risks and uncertainties
associated with developing medicines, including the uncertainty of:

•

•

•

•

•

•

•

establishing  an  appropriate  safety  profile  with  an  investigational  new  drug  application,  or  IND,  and/or  new  drug  application,  or  NDA,  enabling
toxicology and clinical trials;

the successful enrollment in, and completion of, clinical trials;

the receipt of marketing approvals from applicable regulatory authorities;

establishing compliant commercial manufacturing capabilities or making arrangements with third-party manufacturers;

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

launching commercial sales of the products, if and when approved, whether alone or in collaboration with others; and

maintaining an acceptable safety profile 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
and timing associated with the development of that product candidate.

Research  and  development  expenses  consist  primarily  of  costs  incurred  for  our  research  activities,  including  our  drug  discovery  efforts,  and  the
development of our product candidates, which include:

•

•

•

•

employee-related expenses, including salaries, benefits and stock-based compensation expense;

expenses  incurred  under  agreements  with  third  parties,  including  CROs,  that  conduct  research  and  development  and  both  preclinical  and  clinical
activities on our behalf, and the cost of consultants;

the cost of lab supplies and acquiring, developing and manufacturing preclinical and clinical study materials; and

facilities,  depreciation,  and  other  expenses,  which  include  direct  and  allocated  expenses  for  rent  and  the  maintenance  of  facilities,  insurance  and
other operating costs.

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In  May  2022,  we  announced  our  determination  to  evolve  our  approach  to  exploratory  research  and  drug  discovery  to  focus  on  our  existing  late-lead
optimization programs and to prioritize in-licensing or acquiring assets for pipeline growth. We reduced approximately 45 roles focused on exploratory
research in connection with this evolution of our research organization, and retained an internal research team focused on roles critical to advancing our
current and future late-stage research and early clinical programs.

The following summarizes our most advanced programs:

PYRUKYND® (mitapivat): First-in-Class PK Activator

We are developing PYRUKYND® for the treatment of PK deficiency and other hemolytic anemias such as thalassemia and SCD. PYRUKYND® is an
orally available small molecule and a potent activator of the wild-type and mutated PK enzymes.

In February 2022, the FDA approved PYRUKYND® for the treatment of hemolytic anemia in adults with PK deficiency in the United States. In November
2022, we received marketing authorization from the European Commission for PYRUKYND® for the treatment of PK deficiency in adult patients in the
EU. In December 2022, we received marketing authorization in Great Britain for PYRUKYND® for the treatment of PK deficiency in adult patients under
the  European  Commission  Decision  Reliance  Procedure.  In  addition,  we  are  currently  evaluating  PYRUKYND®  in  clinical  trials  for  the  treatment  of
thalassemia, SCD, and in pediatric patients with PK deficiency. We have worldwide development and commercial rights to PYRUKYND® and expect to
fund  the  future  development  and  commercialization  costs  related  to  this  program.  PYRUKYND®  has  been  granted  orphan  drug  designation  for  the
treatment of PK deficiency by the FDA and the EMA. Additionally, PYRUKYND® has received orphan drug designation from the FDA for the treatment
of thalassemia and SCD.

We have built our commercial infrastructure to support the commercial launch of PYRUKYND® in adult PK deficiency in the United States. In connection
with our regulatory approvals in the EU and Great Britain, we are currently providing access to PYRUKYND® free of charge for eligible patients in those
jurisdictions  through  a  global  managed  access  program.  We  may  provide  access  to  PYRUKYND®  for  adult  patients  with  PK  deficiency  in  other
jurisdictions upon request through the global managed access program, on either a free of charge or for charge basis. Beyond the global managed access
program, we continue to evaluate options for the commercialization of PYRUKYND® outside of the United States, including through exploring potential
partnership opportunities.

We are evaluating PYRUKYND® in the following clinical trials:

•

•

•

An  extension  study  evaluating  the  long-term  safety,  tolerability  and  efficacy  of  treatment  with  PYRUKYND®  in  patients  from  ENERGIZE,  our
completed phase 3, double-blind, randomized, placebo-controlled multicenter study pivotal trial of PYRUKYND® in adults with non-transfusion-
dependent alpha- or beta-thalassemia. We announced topline data for ENERGIZE in January 2024. A total of 194 patients were enrolled in the study,
with 130 randomized to PYRUKYND® 100 mg twice-daily, and 64 randomized to matched placebo. 122 patients (93.8%) in the PYRUKYND®
arm and 62 patients (96.9%) in the placebo arm completed the 24-week double-blind period of the study. The study met the primary endpoint of
hemoglobin response, where treatment with PYRUKYND® demonstrated a statistically significant increase in hemoglobin response compared to
placebo, as 42.3% of patients in the PYRUKYND® arm achieved a hemoglobin response, compared to 1.6% of patients in the placebo arm (2-sided
p<0.0001).  Treatment  with  PYRUKYND®  also  demonstrated  statistically  significant  improvements  compared  to  placebo  for  both  key  secondary
endpoints: (i) change from baseline in average Functional Assessment of Chronic Illness Therapy-Fatigue, or FACIT-Fatigue, subscale score from
week 12 to week 24 and (ii) change from baseline in average emoglobin concentration from week 12 to week 24. During the 24-week double-blind
period, four (3.1%) subjects in the PYRUKYND® arm experienced adverse events, or AEs, leading to discontinuation, and there were no AEs in the
placebo arm leading to discontinuation. We plan to provide a more detailed analysis of the data from this trial at an upcoming medical meeting and
we aim to submit an NDA for PYRUKYND® in thalassemia to the FDA by the end of 2024.
ENERGIZE-T, a phase 3, double-blind, randomized, placebo-controlled multicenter study evaluating the efficacy and safety of PYRUKYND® as a
potential  treatment  for  adults  with  transfusion-dependent  alpha-  or  beta-thalassemia,  defined  as  6  to  20  RBC  units  transfused  and  ≤  six-week
transfusion-free period during the 24-week period before randomization. The primary endpoint of the trial is percentage of patients with transfusion
reduction response, defined as a ≥50% reduction in transfused RBC units with a reduction of ≥2 units of transfused RBCs in any consecutive 12-
week  period  through  week  48  compared  with  baseline.  Secondary  endpoints  include  additional  transfusion  reduction  measures  and  percentage  of
participants with transfusion-independence. This trial has completed enrollment and we plan to announce topline data from this trial in mid-2024.

RISE UP, a phase 2/3 study evaluating the efficacy and safety of PYRUKYND® in SCD patients who are 16 years of age or older, have had between
two and 10 sickle cell pain crises in the past 12 months, and have hemoglobin within the range of 5.5 to 10.5 g/dL during screening. We enrolled 79
patients in the phase 2 portion of the trial, with 26 patients in the 50 mg twice daily mitapivat arm, 26 patients in the 100 mg twice daily mitapivat
arm and 27 patients in the placebo arm. The primary endpoints of the phase 2 portion of the trial were hemoglobin response, defined as defined as ≥
1 g/dL

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increase in average hemoglobin concentration from week 10 to week 12 compared to baseline, and safety. In June 2023, we announced the phase 2
portion of this trial had achieved its primary endpoint of hemoglobin response in patients in both 50 mg and 100 mg twice daily mitapivat arms.
46.2% of patients (n=12) in the 50 mg twice daily mitapivat arm and 50.0% of patients (n=13) in the 100 mg twice daily mitapivat arm achieved a
hemoglobin response, compared to 3.7% of patients (n=1) in the placebo arm (2-sided p=0.0003 and 0.0001, respectively). In December 2023, we
announced  the  following  additional  results  of  the  phase  2  portion  of  the  trial:  (i)  the  least-squares  mean  (95%  confidence  interval)  for  average
change from baseline in hemoglobin levels, from week 10 through week 12, for patients in the 50 mg twice daily mitapivat, 100 mg twice daily
mitapivat,  and  placebo  arms,  respectively,  was  1.11  (0.77,  1.45)  g/dL,  1.13  (0.79,  1.47)  g/dL,  and  0.05  (−0.28,  0.39)  g/dL;  (ii)  we  observed
improvements in annualized rates of sickle cell pain crises as the annualized rate of sickle cell pain crises (95% confidence interval) for patients in
the 50 mg twice daily and 100 mg twice daily mitapivat arms, respectively, was 0.83 (0.34, 1.99) and 0.51 (0.16, 1.59), compared to 1.71 (0.95,
3.08)  for  patients  in  the  placebo  arm;  (iii)  we  observed  improvement  in  patient-reported  fatigue  scores  in  the  50  mg  twice  daily  mitapivat  arm
compared to the placebo arm, and the least-squares mean (95% confidence interval) for average changes from baseline in patient-reported fatigue
score, from week 10 through week 12, for patients in the 50 mg twice daily mitapivat, 100 mg twice daily mitapivat, and placebo arms, respectively,
was −3.80 (−7.16, −0.45), −0.10 (−3.27, 3.08), and −0.17 (−3.40, 3.07). The safety profile for mitapivat observed in the phase 2 portion of the trial
was generally consistent with previously reported data in other studies of SCD and other hemolytic anemias. The most common treatment-emergent
AEs in the 50 mg BID, 100 mg BID, and placebo arms, respectively, were: headache (n=6, 6, 7), arthralgia (n=3, 5, 9), dysmenorrhea (n=0, 3, 0),
pain (n=3, 3, 2), pain in extremity (n=1, 3, 6), back pain (n=4, 2, 3), nausea (n=1, 2, 4), fatigue (n=4, 1, 5), and influenza-like illness (n=1, 1, 3).
There  were  no  serious  treatment-emergent  adverse  events,  or  TEAEs,  attributed  to  mitapivat  and  there  were  no  adverse  events  leading  to  drug
reduction, discontinuation, interruption or death in either the mitapivat or the placebo arms. Of the 79 patients enrolled in the study, 73 continued
into the Phase 2 open-label extension period. In October 2023, we enrolled the first patient in the phase 3 portion of this trial. The phase 3 portion
includes a 52-week randomized, placebo-controlled period in which participants will be randomized in a 2:1 ratio to receive the recommended (100
mg twice daily) PYRUKYND® dose level or the placebo. The primary endpoints are hemoglobin response, defined as ≥1 g/dL increase in average
hemoglobin from baseline to week 52, and annualized rate of sickle cell pain crises. Participants who complete either the phase 2 or phase 3 portion
will  have  the  option  to  move  into  a  216-week  open-label  extension  period  to  continue  to  receive  PYRUKYND®.  We  anticipate  completing
enrollment by the end of 2024 and announcing topline data for this trial in 2025.

ACTIVATE-kids and ACTIVATE-kidsT, double-blind phase 3 studies evaluating the efficacy and safety of PYRUKYND® as a potential treatment
for PK deficiency in not regularly transfused and regularly transfused patients between one and 18 years old, respectively. The primary endpoint of
ACTIVATE-kids is percentage of patients with hemoglobin response, defined as ≥1.5 g/dL increase in hemoglobin concentration from baseline that
is sustained at two or more scheduled assessments at weeks 12, 16, and 20 during the double-blind period. The primary endpoint of ACTIVATE-
kidsT is transfusion reduction response, defined as ≥33% reduction in total RBC transfusion volume from week 9 through week 32 of the double-
blind period. ACTIVATE-kidsT has completed enrollment and we expect to announce topline data for this trial by the end of 2024. ACTIVATE-kids
is currently enrolling patients, we expect to complete enrollment for this trial by mid-2024, and we anticipate announcing topline data for this trial in
2025.

An  extension  study  evaluating  the  long-term  safety,  tolerability  and  efficacy  of  treatment  with  PYRUKYND®  in  patients  from  ACTIVATE  and
ACTIVATE-T, our completed pivotal trials of PYRUKYND® in not regularly transfused and regularly transfused adult patients with PK deficiency.

An  extension  study  evaluating  the  long-term  safety,  tolerability  and  efficacy  of  treatment  with  PYRUKYND®  in  patients  from  DRIVE  PK,  our
completed global phase 2, first-in-patient, open-label safety and efficacy clinical trial of PYRUKYND® in adult, not regularly transfused patients
with PK deficiency.

An extension study evaluating the safety, tolerability and efficacy of treatment with PYRUKYND® in patients from our completed phase 2, open-
label safety and efficacy clinical trial of PYRUKYND® in adults with non-transfusion-dependent alpha- and beta-thalassemia.

In collaboration with the Company, the National Institutes of Health, or NIH, is evaluating PYRUKYND® in a phase 1 trial in patients with SCD
pursuant to a cooperative research and development agreement. The core trial period has completed, and the long-term extension study is ongoing.
In June 2020, clinical proof of concept was established based on a preliminary analysis of the data from this trial.

In  collaboration  with  the  Company,  University  Medical  Center  Utrecht,  or  UMC  Utrecht,  is  evaluating  PYRUKYND®  in  patients  with  SCD
pursuant to an investigator sponsored trial agreement. The trial has completed enrollment and patient follow-up is ongoing, and a 2-year extension
study has been initiated for patients who complete the follow-up period.

•

•

•

•

•

•

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AG-946: Novel PK Activator

We are developing AG-946, a novel PK activator, for the potential treatment of LR MDS and hemolytic anemias. We are evaluating AG-946 in a phase 1
trial of AG-946 in healthy volunteers and in patients with SCD. We have presented data from the healthy volunteer cohorts, and we have initiated the SCD
patient cohort of this phase 1 trial.

We initiated a phase 2a clinical trial of AG-946 in adults with LR MDS in the third quarter of 2022, and the trial has completed enrollment with 22 patients,
including 12 patients classified as non-transfused and 10 patients classified as low transfusion burden. Patients received 5 mg of AG-946 once daily for up
to  16  weeks.  The  two  primary  endpoints  of  the  trial  were  transfusion  independence  (for  patients  classified  as  low  transfusion  burden),  defined  as
transfusion-free  for  ≥  eight  consecutive  weeks  during  the  16-week  treatment  period,  and  hemoglobin  response,  defined  as  a  ≥  1.5  g/dL  increase  from
baseline in the average hemoglobin concentration measured from week 8 through week 16.

In November 2023, we announced that we achieved clinical proof-of-concept in the phase 2a portion of the trial. We observed that four of the 10 patients
with low transfusion burden achieved the transfusion independence endpoint, and one of the 22 patients achieved the hemoglobin response endpoint in the
16-week treatment period. The safety profile observed was consistent with data reported in the healthy volunteer study of AG-946. 19 patients elected to
enroll in the extension period for up to 156 weeks. We intend to complete a full evaluation of the phase 2a trial results and assess the impact on the phase
2b portion of the protocol in 2024. We anticipate initiating a phase 2b trial of AG-946 in adults with LR MDS in mid-2024.

Other Programs

In addition to the aforementioned development programs, we are developing AG-181, a PAH stabilizer for the potential treatment of PKU, for which we
filed an investigational new drug, or IND, application in December 2023, and plan to initiate a phase 1 study in healthy volunteers in the first half of 2024.
Also, in July 2023, we entered into a license agreement with Alnylam for the development and commercialization of products containing or comprised of
an siRNA preclinical development candidate discovered by Alnylam and targeting the TMPRSS6 gene, and we intend to pursue development of a licensed
product for the potential treatment of patients with PV.

Selling, General and Administrative Expenses

Selling,  general  and  administrative  expenses  consist  primarily  of  salaries  and  other  related  costs,  including  stock-based  compensation,  for  personnel  in
executive,  finance,  business  development,  commercial,  legal,  information  technology  and  human  resources  functions.  Other  significant  costs  include
facility-related  costs  not  otherwise  included  in  research  and  development  expenses,  legal  fees  relating  to  patent  and  corporate  matters,  and  fees  for
accounting and consulting services.

We anticipate that our selling, general and administrative expenses will increase in the future to support continued research and development activities and
ongoing and future commercialization activities related to our portfolio, including the ongoing commercialization of PYRUKYND® and any of our other
product candidates, which may include the hiring of additional personnel.

Impact of COVID-19 on our Business

As of December 31, 2023, we have not experienced a significant financial or supply chain impact directly related to the recent COVID-19 pandemic, but
have  experienced  some  disruptions  to  clinical  operations  and  certain  clinical  and  research  activities  at  our  contract  research  organizations,  or  CROs.
Although the public health emergency declaration related to COVID-19 ended on May 11, 2023, the extent of the effect of any future pandemics or public
health emergencies on our operational and financial performance will depend in large part on future developments, which cannot be predicted and are out
of our control.

Critical Accounting Policies and Significant Judgments and Estimates

Our management’s discussion and analysis of our financial condition and results of operations are based on our consolidated financial statements, which we
have prepared in accordance with accounting principles generally accepted in the United States. The preparation of these consolidated financial statements
requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities
at  the  date  of  the  financial  statements,  as  well  as  the  reported  amounts  of  revenue  and  expenses  during  the  reporting  periods.  On  an  ongoing  basis,  we
evaluate our estimates and judgments. We base our estimates on historical experience and various other factors that we believe are reasonable under the
circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from
other sources. Actual results may differ from these estimates under different assumptions or conditions.

While our significant accounting policies are described in more detail in the notes to our consolidated financial statements included in this Annual Report
on Form 10-K, we believe that the following accounting policies are the most critical in fully understanding and evaluating our financial condition and
results of operations and are policies that require a significant level of judgment and estimates.

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Revenue recognition

Under Accounting Standards Codification 606, Revenue from Contracts with Customers, or ASC 606, revenue is recognized when the customer obtains
control of promised goods or services, in an amount that reflects the consideration that we expect to receive in exchange for those goods or services. To
determine revenue recognition for arrangements that have been determined to be within the scope of ASC 606, we perform the following five steps: (i)
identify  the  contract(s)  with  a  customer;  (ii)  identify  the  performance  obligations  in  the  contract;  (iii)  determine  the  transaction  price;  (iv)  allocate  the
transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) we satisfy a performance obligation. We only apply
the  five-step  model  to  contracts  when  it  is  probable  that  we  will  collect  the  consideration  we  are  entitled  to  in  exchange  for  the  goods  or  services  we
transfer to the customer.

This  standard  applies  to  all  contracts  with  customers,  except  for  contracts  that  are  within  the  scope  of  other  standards,  such  as  leases,  insurance,
collaboration arrangements and financial instruments.

Once the contract is determined to be within the scope of ASC 606, we assess the goods or services promised within each contract and determine those that
are performance obligations, and assess whether each promised good or service is distinct. We will 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.

Product Revenue

We generate product revenue from sales of PYRUKYND® to a limited number of specialty distributors and specialty pharmacy providers, or collectively,
the  Customers.  These  Customers  subsequently  resell  PYRUKYND®  to  pharmacies  or  dispense  PYRUKYND®  directly  to  patients.  In  addition  to
distribution agreements with Customers, we enter into arrangements with healthcare providers and payors that provide for government-mandated and/or
privately-negotiated rebates, chargebacks and discounts with respect to the purchase of PYRUKYND®.

The performance obligation related to the sale of PYRUKYND® is satisfied and revenue is recognized when the Customer obtains control of the product,
which occurs at a point in time, typically upon delivery to the Customer.

Revenues from product sales are recorded at the net sales price, or transaction price, which includes estimates of variable consideration for which reserves
are established and result from contractual adjustments, government rebates, returns and other allowances that are offered within the contracts with our
Customers, healthcare providers, payors and other indirect customers relating to the sale of our products.

Contractual Adjustments. We generally provide Customers with discounts, including prompt pay discounts, and allowances that are explicitly stated
in the contracts and are recorded as a reduction of revenue in the period the related product revenue is recognized. In addition, we receive sales order
management, data and distribution services from certain Customers.

Chargebacks  and  discounts  represent  the  estimated  obligations  resulting  from  contractual  commitments  to  sell  products  to  qualified  healthcare
providers at prices lower than the list prices charged to Customers who directly purchase the product from us. Customers charge us for the difference
between  what  they  pay  for  the  product  and  the  ultimate  selling  price  to  the  qualified  healthcare  providers.  These  reserves  are  estimated  using  the
expected value method, based upon a range of possible outcomes that are probability-weighted for the estimated channel mix and are established in
the same period that the related revenue is recognized, resulting in a reduction of product revenue.

Government Rebates.  Government  rebates  include  Medicare,  TriCare,  and  Medicaid  rebates,  which  we  estimate  using  the  expected  value  method,
based upon a range of possible outcomes that are probability-weighted for the estimated payor mix. These reserves are recorded in the same period
the  related  revenue  is  recognized,  resulting  in  a  reduction  of  product  revenue.  For  Medicare,  we  also  estimate  the  number  of  patients  in  the
prescription drug coverage gap for whom we will owe an additional liability under the Medicare Part D program.

Returns. We estimate the amount of product sales that may be returned by Customers and record this estimate as a reduction of revenue in the period
the  related  product  revenue  is  recognized.  We  currently  estimate  product  return  liabilities  using  the  expected  value  method,  based  on  available
industry data, including our visibility into the inventory remaining in the distribution channel.

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Accrued Research and Development Expenses

As  part  of  the  process  of  preparing  our  consolidated  financial  statements,  we  are  required  to  estimate  our  accrued  expenses.  This  process  involves
reviewing  quotations  and  contracts,  identifying  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. Certain service providers invoice us in
arrears for services performed or when contractual milestones are met. We make estimates of our accrued expenses as of each balance sheet date in our
financial statements based on facts and circumstances known to us at that time. We periodically confirm the accuracy of our estimates with the service
providers and make adjustments, if necessary. Examples of estimated accrued research and development expenses include fees paid to: (i) CROs and other
third parties in connection with clinical studies and preclinical development activities; (ii) investigative sites in connection with clinical studies; and (iii)
third parties related to product manufacturing, development and distribution of clinical supplies.

We base our expenses related to CROs on our estimates of the services received and efforts expended pursuant to quotes and contracts with CROs that
conduct research and development on our behalf. The financial terms of these agreements are subject to negotiation, vary from contract to contract and may
result in uneven payment flows. There may be instances in which payments made to our vendors will exceed the level of services provided and result in a
prepayment of the research and development expense. 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. If the actual timing of the performance of services or the level of effort varies from our estimate, we adjust the
accrual or prepaid accordingly. Although we do not expect our estimates to be materially different from amounts actually incurred, our understanding of the
status and timing of services performed relative to the actual status and timing of services performed may vary and could result in us reporting amounts that
are too high or too low in any particular period.

Stock-based Compensation

We account for stock-based compensation awards in accordance with ASC 718, Compensation –Stock Compensation, or ASC 718. For stock-based awards
granted to employees, non-employees and members of the board of directors for their services and for participation in our employee stock purchase plan,
we  estimate  the  grant  date  fair  value  of  each  option  award  using  the  Black-Scholes  option-pricing  model.  The  use  of  the  Black-Scholes  option-pricing
model requires us to make assumptions with respect to the expected term of the option, the expected volatility of the common stock consistent with the
expected life of the option, risk-free interest rates and expected dividend yields of the common stock.

Expected term. We use the “simplified method” as prescribed by the SEC Staff Accounting Bulletin No. 107, Share Based Payments, to estimate
the expected term of stock option grants. Under this approach, the weighted-average expected life is presumed to be the average of the contractual
term of ten years and the weighted-average vesting term of the stock options, taking into consideration multiple vesting tranches. We utilize this
method due to the plain-vanilla nature of our share-based awards.

Volatility. The  expected  volatility  has  been  determined  using  Agios'  historical  volatilities  for  a  period  equal  to  the  expected  term  of  the  option
grant.

Risk-free rate. The risk-free rate is based on the yield curve of U.S. Treasury securities with periods commensurate with the expected term of the
options being valued.

Dividends.  We  have  never  paid,  and  do  not  anticipate  paying,  any  cash  dividends  in  the  foreseeable  future,  and,  therefore,  use  an  expected
dividend yield of zero in the option-pricing model.

Forfeitures. We account for forfeitures as they occur and, therefore, do not estimate forfeitures.

For awards subject to service-based vesting conditions, we recognize stock-based compensation expense equal to the grant date fair value of stock options
on  a  straight-line  basis  over  the  requisite  service  period.  For  awards  subject  to  performance-based  vesting  conditions,  we  recognize  stock-based
compensation expense if the performance condition is considered probable of achievement using management’s best estimates.

Discontinued Operations

We accounted for the sale of our oncology business in the first quarter of 2021 in accordance with ASC 205, Discontinued Operations  and  Accounting
Standards Update, or ASU, No. 2014-08, Reporting of Discontinued Operations and Disclosures of Disposals of Components of an Entity. We followed the
held-for-sale criteria as defined in ASC 360, Property, Plant and Equipment, and ASC 205. ASC 205 requires that a component of an entity that has been
disposed of or is classified as held for sale and has operations and cash flows that can be clearly distinguished from the rest of the entity be reported as
assets held for sale and discontinued operations. In the period a component of an entity has been disposed of or classified as held for sale, the results of
operations  for  the  periods  presented  are  reclassified  into  separate  line  items  in  the  consolidated  statements  of  operations.  Assets  and  liabilities  are  also
reclassified into separate line items on the related consolidated balance sheets for the

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periods presented. The statements of cash flows for the periods presented are also reclassified to reflect the results of discontinued operations as separate
line items. ASU 2014-08 requires that only a disposal of a component of an entity, or a group of components of an entity, that represents a strategic shift
that  has,  or  will  have,  a  major  effect  on  the  reporting  entity’s  operations  and  financial  results  be  reported  in  the  financial  statements  as  discontinued
operations. ASU 2014-08 also provides guidance on the financial statement presentations and disclosures of discontinued operations.

Due  to  the  sale  of  our  oncology  business  during  the  first  quarter  of  2021,  in  accordance  with  ASC  205,  we  have  classified  the  results  of  the  oncology
business  as  discontinued  operations  in  our  consolidated  statements  of  operations  and  cash  flows  for  all  periods  presented,  and  refer  to  Note  15,
Discontinued Operations. All amounts included in the notes to the consolidated financial statements relate to continuing operations unless otherwise noted.

Results of Operations

Certain prior-year amounts have been reclassified to conform with current presentation.

Comparison of years ended December 31, 2023, 2022 and 2021

Revenues

(In thousands)
Revenues:

Product revenue, net
Milestone revenue
Total revenue

2023

2022

2021

$

$

26,823  $
— 
26,823  $

11,740  $
2,500 
14,240  $

— 
— 
— 

Total Revenue – 2023 vs. 2022 – The increase in total revenue of $12.6 million in 2023 compared to 2022 was due to increased product revenue associated
with PYRUKYND®, which was approved by the FDA in February 2022, partially offset by revenue recognized in 2022 associated with the licensing of
intellectual property for our Friedreich's Ataxia preclinical program.

Total Revenue – 2022 vs. 2021 – The increase in total revenue of $14.2 million in 2022 compared to 2021 was due to product revenue associated with
PYRUKYND®, which was approved in February 2022, and revenue recognized associated with the licensing of intellectual property for our Friedreich's
Ataxia preclinical program.

Total Operating Expenses
(In thousands)
Operating expenses
Cost of sales
Research and development
Selling, general and administrative

Total Operating Expenses

2023

2022

2021

$

$

2,881  $

295,526 
119,903 
418,310  $

1,704  $

279,910 
121,673 
403,287  $

— 
256,973 
121,445 
378,418 

Total Operating Expenses – 2023 vs. 2022 – The increase in total operating expenses of $15.0 million in 2023 compared to 2022 was primarily due to an
increase of $15.6 million in research and development expenses, which is described below under Research and Development Expenses.

Total Operating Expenses – 2022 vs 2021 – The increase in total operating expenses of $24.9 million in 2022 compared to 2021 was primarily due to an
increase of $22.9 million in research and development expenses, which is described below under Research and Development Expenses.

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Research and Development Expenses

Our research and development expenses, by major program, are outlined in the table below: 
(In thousands)
PK activator (PYRUKYND®)
Novel PK activator (AG-946)
In-process research and development
Other research and platform programs

Total direct research and development expenses

Compensation and related expenses
Facilities and IT related expenses & other
Other expenses - transition services

Total indirect research and development expenses

Total research and development expense

2023
101,322  $
18,267 
17,500 
11,492 
148,581 
108,484 
38,461 
— 
146,945 
295,526  $

2022

2021

83,271  $
15,747 
— 
26,837 
125,855 
109,248 
43,290 
1,517 
154,055 
279,910  $

73,999 
10,658 
— 
22,959 
107,616 
95,198 
44,767 
9,392 
149,357 
256,973 

$

$

Total Research and Development Expenses – 2023 vs. 2022 – The increase in research and development expenses of $15.6 million in 2023 compared to
2022 was due to a $22.7 million increase in our direct expense offset by a $7.1 million decrease in our indirect expenses. The increase in direct expenses
was primarily due to a $18.1 million increase in PYRUKYND® costs and in-process research and development from the $17.5 million up-front payment
associated with the license agreement with Alnylam discussed above under Overview, offset by a $15.3 million decrease in other research and platform
programs. The increase in PYRUKYND® costs was primarily due to increased costs for the phase 3 trials of PYRUKYND® in patients with thalassemia,
ENERGIZE and ENERGIZE-T, and increased process development and medical affairs expenses. The decrease in other research and platform programs
was  primarily  due  to  our  decision  to  evolve  our  approach  to  exploratory  research  and  drug  discovery  to  focus  on  our  existing  late-lead  optimization
programs. The decrease in indirect expenses was primarily due to a $4.8 million decrease in facilities and IT related expenses & other due to a reduction in
facility expenses associated with the evolution of our research organization, and the $1.5 million of reimbursable transition related services we provided to
Servier in 2022 related to the sale of the oncology business for discovery, clinical development, technical operations, and related activities, which were
completed during the three months ended March 31, 2022.

Total Research and Development Expenses – 2022 vs 2021 – The increase in research and development expenses of $22.9 million in 2022 compared to
2021 was due to an $18.2 million increase in our direct expenses and a $4.7 million increase in our indirect expenses. The increase in direct expenses was
due to a $9.3 million increase in PYRUKYND® costs, a $5.1 million increase in AG-946 costs, and a $3.9 million increase in other research and platform
programs. The increase in PYRUKYND® costs was primarily due to increased costs for the phase 3 trials of PYRUKYND® in patients with thalassemia,
ENERGIZE and ENERGIZE-T, the phase 3 trials of PYRUKYND® in pediatric patients with PK deficiency, ACTIVATE-kids and ACTIVATE-kidsT, and
the phase 2/3 trial of PYRUKYND® in patients with SCD, RISE UP, offset by closeouts of the ACTIVATE and ACTIVATE-T studies. The increase in AG-
946 costs was primarily due to start-up costs for the phase 2 trial of AG-946 in patients with LR MDS and increased spend for the phase 1 trial of AG-946
in healthy volunteers and in patients with SCD. The increase in other research and platform programs was primarily driven by increased activity associated
with our preclinical PAH program as well as increased activity on various other exploratory activities. The increase in indirect expenses was primarily due
to  a  $14.1  million  increase  in  compensation  and  related  expenses  primarily  due  to  increased  headcount,  as  well  as  certain  workforce-related  expenses
associated with the evolution of our research organization. This increase was partially offset by $7.9 million of additional reimbursable transition related
services  we  provided  to  Servier  in  2021  compared  to  2022  related  to  the  sale  of  the  oncology  business  for  discovery,  clinical  development,  technical
operations, and related activities, which were completed during the three months ended March 31, 2022.

Other Income and Expense
(In thousands)
Gain on sale of contingent payments
Royalty income from gain on sale of oncology business
Interest income, net
Other income, net

$

2023

—  $
— 
33,344 
6,055 

2022
127,853  $
9,851 
12,793 
6,749 

2021

— 
6,639 
836 
14,433 

Other Income and Expense – 2023 vs. 2022 –  The  decrease  in  gain  on  sale  of  contingent  payments  and  royalty  income  from  gain  on  sale  of  oncology
business in 2023 compared to 2022 was due to the sale to Sagard in the fourth quarter of 2022 of our rights to future contingent payments associated with
royalties on U.S. next sales of TIBSOVO®. The $20.6 million increase in

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interest income, net in 2023 compared to 2022 is primarily attributable to an increase in interest rates. The $0.7 million decrease in other income, net in
2023 compared to 2022 primarily related to approximately $2.6 million of reimbursable transition related services and fees for the sale of the oncology
business in 2022, partially offset by sublease income of $6.1 million in 2023 compared to $4.1 million in 2022.

Other Income and Expense – 2022 vs 2021 – The $127.9 million gain on sale of contingent payments in 2022 was due to the October 27, 2022 sale of
future contingent payments to entities affiliated with Sagard. The $12.0 million increase in interest income, net in 2022 compared to 2021 was primarily
attributable to an increase in interest rates. The $3.2 million increase in royalty income from gain on sale of oncology business related to higher income
from royalties on U.S. net sales of TIBSOVO® by Servier in 2022 compared to 2021. The $7.7 million decrease in other income, net in 2022 compared to
2021 primarily related to approximately $13.8 million of reimbursable transition related services and fees for the sale of the oncology business in 2021
compared to $2.6 million in 2022, partially offset by sublease income of $4.1 million in 2022 compared to $0.5 million in 2021.

Loss from Operations and Net (Loss) Income
(In thousands)
Net loss from continuing operations
Net income from discontinued operations, net of tax
Net (loss) income

2023
(352,088) $

2022
(231,801) $

$

— 
(352,088)

— 
(231,801)

2021
(356,510)
1,961,225 
1,604,715 

Loss from Operations and Net Loss – 2023 vs 2022 – The $120.3 million increase in net loss from continuing operations in 2023 compared to 2022 was
primarily  driven  by  the  gain  on  sale  of  contingent  payments  in  2022  described  above  in  Other  Income  and  Expense,  higher  research  and  development
expenses  discussed  above  under  Research  and  Development  Expenses,  which  includes  the  $17.5  million  up-front  payment  associated  with  the  license
agreement with Alnylam discussed above under Overview, and the decrease in royalty income from gain on sale of oncology business described above in
Other  Income  and  Expense.  These  were  partially  offset  by  the  increase  in  interest  income,  net  discussed  above  in  Other  Income  and  Expense  and  the
increase in revenue discussed above under Revenues.

Loss from Operations and Net (Loss) Income – 2022 vs 2021 – The $124.7 million decrease in net loss from continuing operations in 2022 compared to
2021 was primarily driven by the gain on sale of contingent payments in 2022 described above in Other Income and Expense, the increase in revenue in
2022  compared  to  2021  discussed  above  under  Revenues,  and  the  increase  in  interest  income,  net  and  royalty  income  from  gain  on  sale  of  oncology
business  discussed  above  under  Other  Income  and  Expense.  These  were  partially  offset  by  higher  research  and  development  expenses  discussed  above
under  Research  and  Development  Expenses  and  a  decrease  in  other  income,  net  discussed  above  under  Other  Income  and  Expense.  The  change  in  net
income from discontinued operations and net (loss) income in 2022 compared to 2021 was primarily driven by the sale of our oncology business to Servier
for approximately $1.8 billion in cash in the first quarter of 2021, which is included within net income from discontinued operations.

Liquidity and Capital Resources

Sources of Liquidity

Since our inception, and through March 31, 2021, we financed our operations primarily through proceeds from the sale of our royalty rights, commercial
sales  of  TIBSOVO®,  funding  received  from  our  collaboration  agreements,  private  placements  of  our  preferred  stock,  our  initial  public  offering  of  our
common stock and concurrent private placement of common stock to an affiliate of Celgene, and our follow-on public offerings. Following the sale of our
oncology  business  to  Servier  on  March  31,  2021,  we  have  financed  and  expect  to  continue  to  finance  our  operations  primarily  through  cash  on  hand,
royalty payments from Servier with respect to U.S. net sales of TIBSOVO® prior to the sale of these contingent payments to Sagard, proceeds from the
sale of contingent payments to Sagard, a potential milestone payment and royalties from Servier if a new drug application for vorasidenib is approved by
the FDA with a label that permits vorasidenib’s use as a single agent for the adjuvant treatment of patients with Grade 2 glioma that have an isocitrate
dehydrogenase  1  or  2  mutation,  the  actual  and  potential  future  sales  of  PYRUKYND®  and,  potentially,  collaborations,  strategic  alliances,  licensing
arrangements and other nondilutive strategic transactions. In addition, we may pursue opportunistic debt offerings, and equity or equity-linked offerings.

On  March  31,  2021,  we  completed  the  sale  of  our  oncology  business  to  Servier.  The  transaction  included  the  sale  of  our  oncology  business,  including
TIBSOVO®, our clinical-stage product candidates vorasidenib, AG-270 and AG-636, and our oncology research programs for a payment of approximately
$1.8  billion  in  cash  at  the  closing,  subject  to  certain  adjustments,  and  a  payment  of  $200.0  million  in  cash,  if,  prior  to  January  1,  2027,  vorasidenib  is
granted NDA approval from the FDA with an approved label that permits vorasidenib’s use as a single agent for the adjuvant treatment of patients with
Grade 2 glioma that have an isocitrate dehydrogenase 1 or 2 mutation (and, to the extent required by such approval, the vorasidenib companion

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diagnostic test is granted an FDA premarket approval), as well as a royalty of 5% of U.S. net sales of TIBSOVO® from the close of the transaction through
loss of exclusivity, and a royalty of 15% of U.S. net sales of vorasidenib from the first commercial sale of vorasidenib through loss of exclusivity. The
milestone payment for approval of vorasidenib and royalty payments related to vorasidenib and TIBSOVO® represent contingent consideration. Servier
also acquired our co-commercialization rights for Bristol Myers Squibb's IDHIFA® and the right to receive a $25.0 million potential milestone payment
under our prior collaboration agreement with Celgene, and following the sale Servier is responsible for conducting certain clinical development activities
within the IDHIFA® development program. As discussed below in Note 1, Nature of Business, in October 2022, we sold our rights to the royalty on U.S.
net sales of TIBSOVO® to Sagard for $131.8 million. We retained our rights to the potential milestone payment and royalties from Servier if a new drug
application for vorasidenib is approved by the FDA. In November 2023, Servier announced that it planned to submit a new drug application for vorasidenib
for the treatment of IDH-mutant diffuse glioma to the FDA by the end of 2023 and to the European Medicines Agency, or EMA, in early 2024.

Our cash, cash equivalents and marketable securities balance was $806.4 million at December 31, 2023. The $200.0 million milestone payment and royalty
payments discussed above are our only committed potential external sources of funds. Whether the regulatory approval milestone for vorasidenib will be
achieved is subject to various risks and uncertainties, which are outside our control. Furthermore, we cannot predict what success, if any, Servier may have
in the United States with respect to sales of vorasidenib, if approved, and consequently we cannot estimate the amount of royalty payments that we can
expect to receive from Servier prior to the loss of exclusivity of vorasidenib.

Cash Flows

The following table provides information regarding our cash flows for the years ended December 31, 2023, 2022 and 2021:

(In thousands)
Net cash used in operating activities
Net cash provided by investing activities
Net cash provided by (used in) financing activities
Net change in cash and cash equivalents

Net cash used in operating activities

2023
(296,062) $
239,575 
5,433 
(51,054) $

2022
(309,478) $
243,261 
2,350 
(63,867) $

2021
(407,320)
1,248,778 
(765,768)
75,690 

$

$

Cash  used  in  operating  activities  of  $296.1  million  during  the  year  ended  December  31,  2023,  of  which  all  was  used  by  continuing  operations,  was
primarily due to operating expenses driven by research and development costs described above under Research and Development Expenses, partially offset
by cash received related to interest income of $31.2 million and cash received from revenues of $28.6 million.

Cash  used  in  operating  activities  of  $309.5  million  during  the  year  ended  December  31,  2022,  of  which  all  was  used  by  continuing  operations,  was
primarily due to operating expenses driven by research and development costs described above under Research and Development Expenses, partially offset
by cash received from revenues of $13.3 million, cash received related to interest income of $11.6 million and cash received from royalties on U.S. net
sales of TIBSOVO® of $8.6 million.

Cash used in operating activities of $407.3 million during the year ended December 31, 2021, of which $314.1 million was used by continuing operations
and $93.2 million was used by discontinued operations, was primarily due to operating expenses driven by research and development costs described above
in  Research  and  Development  Expenses,  offset  by  cash  received  of  $39.5  million  from  sales  of  TIBSOVO®,  and  $1.2  million  in  cost  reimbursements
related to our collaboration agreements with Celgene.

Net cash provided by investing activities

The cash provided by investing activities for the year ended December 31, 2023, of which all was provided by continuing operations, was primarily due to
higher proceeds from maturities and sales of marketable securities than purchases of marketable securities, partially offset by the $17.5 million up-front
payment associated with the Alnylam license agreement discussed above under Overview.

The cash provided by investing activities for the year ended December 31, 2022, of which all was provided by continuing operations, was primarily due to
cash  received  of  $131.8  million  from  the  sale  of  future  contingent  payments  described  above  in  Other  Income  and  Expense  and  higher  proceeds  from
maturities and sales of marketable securities than purchases of marketable securities.

The cash provided by investing activities for the year ended December 31, 2021, of which $1,802.9 million was provided by discontinued operations and
$554.2 million was used by continuing operations was primarily due to the approximately $1.8

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billion  in  cash  proceeds  received  from  the  sale  of  our  oncology  business  to  Servier  that  was  completed  on  March  31,  2021,  and  the  result  of  higher
purchases of marketable securities than proceeds from maturities and sales of marketable securities.

Net cash provided by (used in) financing activities

The cash provided by financing activities for the year ended December 31, 2023 was due to $5.4 million of proceeds received from stock option exercises
and purchases made pursuant to our employee stock purchase plan.

The cash provided by financing activities for the year ended December 31, 2022 was primarily due to $2.7 million of proceeds received from stock option
exercises and purchases made pursuant to our employee stock purchase plan.

The cash used in financing activities for the year ended December 31, 2021 was primarily the due to the repurchase of common stock under our Repurchase
Program  of  $802.5  million,  partially  offset  by  $37.3  million  of  proceeds  received  from  stock  option  exercises  and  purchases  made  pursuant  to  our
employee stock purchase plan.

Funding Requirements

We expect our expenses to increase as we continue the research, development and clinical trials of, seek marketing approvals for, and commercialize our
product  candidates  in  our  portfolio,  including  as  we  continue  to  commercialize  PYRUKYND®.  If  we  obtain  additional  marketing  approvals  for
PYRUKYND® in other indications or outside of the United States or for any of our product candidates, we expect to incur significant commercialization
expenses related to product sales, marketing, manufacturing and distribution.

We expect that our existing cash, cash equivalents and marketable securities as of December 31, 2023, together with anticipated product revenue, interest
income  and  the  potential  vorasidenib  milestone  will  enable  us  to  fund  our  operating  expenses  and  capital  expenditures  through  several  value-creating
milestones  and  at  least  into  2026.  This  guidance  does  not  include  cash  inflows  from  potential  royalties  or  royalty  monetization  from  vorasidenib,
commercializing mitapivat outside of the United States through one or more partnerships, or other potential strategic business or financial agreements. Our
future capital requirements will depend on many factors, including:

•

•

•

•

•

•

•

•

•

•

•

•

the amount and timing of future revenue received from commercial sales of PYRUKYND® or any of our product candidates for which we may
receive marketing approval;

the amount of contingent consideration we ultimately receive from Servier;

the  costs  and  timing  of  our  ongoing  commercialization  activities,  including  product  manufacturing,  sales,  marketing  and  distribution  for
PYRUKYND® for the treatment of hemolytic anemia in adults with PK deficiency in approved jurisdictions;

the scope, progress, results and costs of preclinical development, laboratory testing and clinical trials for our product candidates;

the  costs  associated  with  in-licensing  or  acquiring  assets  for  pipeline  growth,  including  the  amount  and  timing  of  future  milestone  and  royalty
payments potentially payable to Alnylam pursuant to the license agreement;

the costs, timing and outcome of regulatory review of our product candidates;

the  costs  of  preparing,  filing  and  prosecuting  patent  applications,  maintaining  and  enforcing  our  intellectual  property  rights  and  defending
intellectual property-related claims;

the  costs  and  timing  of  future  commercialization  activities,  including  product  manufacturing,  sales,  marketing  and  distribution,  for  any  of  our
product candidates for which we may receive marketing approval;

our ability to establish and maintain collaborations on favorable terms, if at all;

our ability to successfully execute on our strategic plans;

operational delays due to public health epidemics, including the recent COVID-19 pandemic; and

operational delays, disruptions and/or increased costs associated with global economic developments, rising global energy prices or energy shortages
or rationing.

Until such time, if ever, as we can generate substantial product revenue, we expect to finance our cash needs primarily through cash on hand, the potential
milestone  payment  and  royalties  from  Servier  if  vorasidenib  is  approved  by  the  FDA,  the  actual  and  potential  future  sales  of  PYRUKYND®  and,
potentially, collaborations, strategic alliances, licensing arrangements and other nondilutive strategic transactions. In addition, we may pursue opportunistic
debt offerings, and equity or equity-linked offerings. We do not have any committed external source of funds other than the potential milestone and royalty
payments  that  we  are  eligible  to  receive  with  respect  to  vorasidenib  under  our  purchase  agreement  with  Servier.  To  the  extent  that  we  raise  additional
capital through the sale of equity or convertible debt securities, the ownership interest 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  common  stockholders.  Debt  financing,  if  available,  may  involve
agreements that include covenants limiting or restricting our

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ability to take specific actions, such as incurring additional debt, selling or licensing our assets, making capital expenditures or declaring dividends.

If we raise funds through collaborations, strategic alliances or licensing arrangements with third parties, we may have to relinquish valuable rights to our
technologies, future revenue streams, research programs 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 or on attractive terms, we may be required to delay, limit, reduce or terminate our
product  development  or  future  commercialization  efforts,  or  grant  rights  to  develop  and  market  product  candidates  that  we  would  otherwise  prefer  to
develop and market ourselves.

Off-Balance Sheet Arrangements

We did not have, during the periods presented, and we do not currently have, any off-balance sheet arrangements, as defined under applicable SEC rules.

Contractual Obligations

The following table summarizes our significant contractual obligations as of the payment due date by period at December 31, 2023:

(In thousands)
Operating lease obligations (1)
Manufacturing arrangements (2)
Service arrangements (3)

Payments due by period

$

Total

81,033  $
637 
8,143 

Less
than
1 year

1-3
years

3-5
years

More
than
5 years

17,142  $
318 
1,629 

39,657  $
319 
3,257 

24,234  $
— 
3,257 

— 
— 
— 

(1) Relates to payment obligations under lease agreements covering approximately 146,000 square feet at 88 Sidney Street, 43,000 square feet at 64 Sidney Street, and 13,000 square feet at 38
Sidney Street, Cambridge, Massachusetts. All leases, as amended, expire on February 29, 2028. At the end of the initial lease period, we have the option to extend the leases at all facilities for
two consecutive five-year periods at the fair market rent at the time of the extension.

(2) Relates to payment obligations under a packaging and supply agreement for drug product.

(3) Relates to payment obligations under a development and manufacturing services agreement for drug product. Arrangement is for a contractual term of five years, however, the total funds can
be allocated in any manner to meet the agreement terms. Amounts included assume equal payments each year.

We  also  enter  into  agreements  in  the  normal  course  of  business  with  CROs  for  clinical  trials  and  contract  manufacturing  organizations,  or  CMOs,  for
supply  manufacturing  and  with  vendors  for  preclinical  research  studies  and  other  services  and  products  for  operating  purposes.  These  contractual
obligations are cancelable at any time by us, generally upon prior written notice to the vendor, and are thus not included in the contractual obligations table.

In  July  2023,  we  entered  into  a  license  agreement  with  Alnylam  as  discussed  above  under  Overview  and  under  Note  1,  Nature  of  Business,  to  our
consolidated financial statements. Under the license agreement, we may be required to pay up to $130.0 million in potential development and regulatory
milestones, in addition to sales milestones as well as tiered royalties on annual net sales, if any, of licensed products, which may be subject to specified
reductions  and  offsets.  Such  payment  obligations  are  contingent  upon  the  occurrence  of  future  events  and  the  timing  and  likelihood  of  such  potential
obligations are not known.

Item 7A. Quantitative and Qualitative Disclosures about Market Risk

We are exposed to market risk related to changes in interest rates. As of December 31, 2023 and December 31, 2022, we had cash, cash equivalents and
marketable securities of $806.4 million and $1.1 billion, respectively, consisting primarily of investments in U.S. Treasuries, government securities and
corporate debt securities. Our primary exposure to market risk is interest rate sensitivity, which is affected by changes in the general level of U.S. interest
rates, particularly because our investments are primarily in short-term marketable securities. Our marketable securities are subject to interest rate risk and
could fall in value if market interest rates increase. Due to the short-term duration of our investment portfolio and the low risk profile of our investments,
we do not believe an immediate and uniform 100 basis point change in interest rates would have a material effect on the fair market value of our investment
portfolio.

We are also exposed to market risk related to changes in foreign currency exchange rates. We have contracts with CROs and CMOs that are located in Asia
and Europe and are denominated in foreign currencies. We are subject to fluctuations in foreign currency rates in connection with these agreements. We do
not  currently  hedge  our  foreign  currency  exchange  rate  risk.  As  of  December  31,  2023  and  December  31,  2022,  we  had  minimal  or  no  liabilities
denominated in foreign currencies.

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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 Item 15, Exhibits and Financial Statement Schedules, of this Annual Report on Form 10-K.

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, as of the end of the period covered
by this Annual Report on Form 10-K, the effectiveness of our disclosure controls and procedures. Based on that evaluation of our disclosure controls and
procedures as of December 31, 2023, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures as
of such date are effective at the reasonable assurance level. The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e)
under  the  Exchange  Act,  means  controls  and  other  procedures  of  a  company  that  are  designed  to  ensure  that  information  required  to  be  disclosed  by  a
company in the reports that it files or submits under the Exchange Act are recorded, processed, summarized and reported within the time periods specified
in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information
required to be disclosed by us in the reports we file or submit under the Exchange Act is accumulated and communicated to our management, including our
principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure. Management recognizes
that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and our
management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

Management’s Annual Report on Internal Control over Financial Reporting

Our  management  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  our  financial  reporting.  Internal  control  over  financial
reporting  is  defined  in  Rules  13a-15(f)  and  15d-15(f)  promulgated  under  the  Exchange  Act  as  a  process  designed  by,  or  under  the  supervision  of,  our
principal executive and principal financial officers and effected by our 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 U.S. GAAP. Our internal
control over financial reporting includes those policies and procedures that:

•

•

•

pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect our transactions and dispositions of our assets;

provide  reasonable  assurance  that  transactions  are  recorded  as  necessary  to  permit  preparation  of  financial  statements  in  accordance  with  U.S.
GAAP, and that our receipts and expenditures are being made only in accordance with authorizations of our 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 our 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.

Our  management  assessed  the  effectiveness  of  our  internal  control  over  financial  reporting  as  of  December  31,  2023.  In  making  this  assessment,
management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in its 2013 Internal Control –
  Integrated  Framework.  Based  on  our  assessment,  our  management  has  concluded  that,  as  of  December  31,  2023,  our  internal  control  over  financial
reporting is effective based on those criteria.

The  effectiveness  of  our  internal  control  over  financial  reporting  as  of  December  31,  2023,  has  been  audited  by  PricewaterhouseCoopers  LLP,  an
independent registered public accounting firm, as stated in their report, which is included herein.

82

Table of Contents

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the
fiscal  quarter  ended  December  31,  2023  that  have  materially  affected,  or  are  reasonably  likely  to  materially  affect,  our  internal  control  over  financial
reporting.

Item 9B. Other Information

(b) Director and Officer Trading Arrangements

None of our directors or officers adopted or terminated a Rule 10b5-1 trading arrangement or a non-Rule 10b5-1 trading arrangement (as defined in Item
408(c) of Regulation S-K) during the three months ended December 31, 2023.

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Not applicable.

83

Table of Contents

Item 10. Directors, Executive Officers and Corporate Governance

PART III

The information required by this Item 10 will be included in our definitive proxy statement to be filed with the Securities and Exchange Commission, or
SEC, with respect to our 2024 Annual Meeting of Stockholders and is incorporated herein by reference. 

Item 11. Executive Compensation

The  information  required  by  this  Item  11  will  be  included  in  our  definitive  proxy  statement  to  be  filed  with  the  SEC  with  respect  to  our  2024  Annual
Meeting of Stockholders and, other than the information required by Item 402(v) of Regulation S-K, is incorporated herein by reference.

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

The  information  required  by  this  Item  12  will  be  included  in  our  definitive  proxy  statement  to  be  filed  with  the  SEC  with  respect  to  our  2024  Annual
Meeting of Stockholders and 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  our  definitive  proxy  statement  to  be  filed  with  the  SEC  with  respect  to  our  2024  Annual
Meeting of Stockholders and is incorporated herein by reference.

Item 14. Principal Accountant Fees and Services

The  information  required  by  this  Item  14  will  be  included  in  our  definitive  proxy  statement  to  be  filed  with  the  SEC  with  respect  to  our  2024  Annual
Meeting of Stockholders and is incorporated herein by reference.

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Table of Contents

Item 15. Exhibits and Financial Statement Schedules

(1)   Financial Statements

PART IV

The following documents are included on pages F-1 through F-29 attached hereto and are filed as part of this Annual Report on Form 10-K.

2
4
5
6
7
8
9

Filed
Herewith

Report of Independent Registered Public Accounting Firm (PCAOB ID 238)
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive (Loss) Income
Consolidated Statements of Stockholders’ Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements

(2)   Financial Statement Schedules

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

(3)   Exhibits

Exhibit
Number

2.1

2.2**

3.1

3.2
4.1

4.2

10.1#
10.2#

10.3#

10.4#
10.5

Description of Exhibit

Incorporated by Reference

Purchase and Sale Agreement, dated as of
December 20, 2020, by and among the Registrant,
Servier Pharmaceuticals, LLC, and, solely for
purposes of guaranteeing certain obligations of the
Purchaser, Servier S.A.S
Purchase and Sale Agreement, dated October 27,
2022, by and among the Registrant, Sagard
Healthcare Royalty Partners, LP and Sagard
Healthcare Partners Co-Invest Designated Activity
Company

Restated Certificate of Incorporation of the
Registrant
Third Amended and Restated By-Laws
Specimen Stock Certificate evidencing the shares
of common stock
Description of Securities Registered Under Section
12 of the Securities Exchange Act of 1934
2013 Stock Incentive Plan
Form of Incentive Stock Option Agreement under
2013 Stock Incentive Plan
Form of Nonstatutory Stock Option Agreement
under 2013 Stock Incentive Plan
2013 Employee Stock Purchase Plan
Form of Indemnification Agreement between the
Registrant and each of its Executive Officers and
Directors

Form

8-K

File
Number
001-36014

Date of Filing

Exhibit
Number

December 22, 2020

2.1

10-K

001-36014

February 23, 2023

2.2

8-K

8-K
S-1

001-36014

July 30, 2013

001-36014
333-189216

March 3, 2023
June 24, 2013

10-K

001-36014

February 19, 2020

333-189216
333-189216

June 24, 2013
June 24, 2013

333-189216

June 24, 2013

333-189216
333-189216

June 24, 2013
July 11, 2013

S-1
S-1

S-1

S-1
S-1

85

3.1

3.1
4.1

4.3

10.4
10.5

10.6

10.7
10.12

 
Table of Contents

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

10.20

10.21

10.22#

10.23#

10.24#

Lease, dated as of September 15, 2014, between
the Registrant and Forest City 88 Sidney, LLC
First Amendment to Lease for 88 Sidney Street,
dated as of November 21, 2014, between the
Registrant and Forest City 88 Sidney, LLC
Summary Description of Annual Cash Incentive
Program
Second Amendment to Lease for 88 Sidney Street,
dated July 20, 2015, by and between the Registrant
and Forest City 88 Sidney Street, LLC
Form of Performance Share Unit Agreement under
2013 Stock Incentive Plan
Lease, dated as of November 17, 2017, between
the Registrant and UP 64 Sidney Street, LLC
Third Amendment to Lease for 88 Sidney Street,
dated November 17, 2017, by and between the
Registrant and Forest City 88 Sidney Street, LLC
First Amendment of Lease, dated April 11, 2018,
by and between UP 64 Sidney Street, LLC and
Agios Pharmaceuticals. Inc.
Form of Restricted Stock Unit Agreement under
2013 Stock Incentive Plan (for employees)
Form of Restricted Stock Unit Agreement under
2013 Stock Incentive Plan (for directors)
Lease, dated as of April 11, 2019, by and between
the Registrant and Thirty-Eight Sidney Street
Limited LLC
Fourth Amendment to Lease, dated as of April 11,
2019, by and between the Registrant and Forest
City 88 Sidney Street, LLC
Third Amendment of Lease, dated as of April 11,
2019, by and between the Registrant and UP 64
Sidney Street, LLC
Sublease Agreement, dated July 27, 2021, between
the Registrant and Prime Medicine, Inc. (38 Sidney
Street)
Sublease Agreement, dated July 27, 2021, between
the Registrant and Prime Medicine, Inc. (64 Sidney
Street)
Sublease Agreement, dated April 14, 2023,
between the Registrant and Watershed Informatics,
Inc.
Letter Agreement, dated July 8, 2022, between the
Registrant and Brian Goff
Form of Inducement Stock Option Agreement for
Brian Goff
Form of Inducement Restricted Stock Unit
Agreement for Brian Goff

8-K

8-K

10-Q

8-K

001-36014

September 19, 2014

001-36014

November 26, 2014

001-36014

May 11, 2015

001-36014

July 23, 2015

10.1

10.1

10.1

10.1

10-K

001-36014

February 26, 2016

10.25

8-K

8-K

8-K

10-Q

10-K

10-Q

001-36014

November 22, 2017

001-36014

November 22, 2017

001-36014

April 13, 2018

001-36014

May 4, 2018

001-36014

February 14, 2019

001-36014

August 1, 2019

10.1

10.2

10.1

10.1

10.32

10.1

10-Q

001-36014

August 1, 2019

10.2

10-Q

001-36014

August 1, 2019

10.3

10-Q

001-36014

November 3, 2021

10.2

10-K

001-36014

February 24, 2022

10.44

X

001-36014

August 4, 2022

001-36014

August 4, 2022

001-36014

August 4, 2022

10.2

10.3

10.4

10-Q

10-Q

10-Q

86

Table of Contents

10.25#**

10.26#

10.27#

10.28#

10.29#**

10.30#
10.31#

10.32#

10.33#

10.34#**

10.35#
10.36#

10.37#

10.38#

21.1
23.1

31.1

31.2

32.1*

32.2*

97.1

Form of Inducement Performance Stock Unit
Agreement for Brian Goff
Letter Agreement, dated as of September 16, 2022,
between the Registrant and Cecilia Jones
Form of Inducement Stock Option Agreement for
Cecilia Jones
Form of Inducement Restricted Stock Unit
Agreement for Cecilia Jones
Form of Inducement Performance Stock Unit
Agreement for Cecilia Jones
Amended and Restated Severance Benefits Plan
Letter Agreement, dated as of December 5, 2022,
between the Registrant and Tsveta Milanova
Form of Inducement Stock Option Agreement for
Tsveta Milanova
Form of Inducement Restricted Stock Unit
Agreement for Tsveta Milanova
Form of Inducement Performance Stock Unit
Agreement for Tsveta Milanova
2023 Stock Incentive Plan
Form of Stock Option Agreement Under 2023
Stock Incentive Plan
Form of Restricted Stock Unit Agreement Under
2023 Stock Incentive Plan
Form of Restricted Stock Unit Agreement
(Performance-Based) Under 2023 Stock Incentive
Plan
Subsidiaries of the Registrant

Consent of PricewaterhouseCoopers LLP, an
Independent Registered Public Accounting Firm
Certification of principal executive officer
pursuant to Rule 13a-14(a)/15d-14(a) of the
Securities Exchange Act of 1934, as amended
Certification of principal financial officer pursuant
to Rule 13a-14(a)/15d-14(a) of the Securities
Exchange Act of 1934, as amended.
Certification of principal executive officer
pursuant to 18 U.S.C. §1350, as adopted pursuant
to Section 906 of the Sarbanes-Oxley Act of 2002.
Certification of principal financial officer pursuant
to 18 U.S.C. §1350, as adopted pursuant to Section
906 of the Sarbanes-Oxley Act of 2002.
Dodd-Frank Compensation Recovery Policy

10-Q

10-Q

S-8

S-8

S-8

8-K
10-K

S-8

S-8

S-8

S-8
10-Q

10-Q

10-Q

87

001-36014

August 4, 2022

001-36014

November 3, 2022

333- 267624

September 26, 2022

333- 267624

September 26, 2022

333- 267624

September 26, 2022

10.5

10.5

99.1

99.2

99.3

001-36014
001-36014

October 7, 2022
February 23, 2023

10.1
10.38

333- 269018

January 3, 2023

333- 269108

January 3, 2023

333- 269108

January 3, 2023

333-272615
001-36014

June 13, 2023
August 3, 2023

001-36014

August 3, 2023

001-36014

August 3, 2023

99.1

99.2

99.3

99.1
10.2

10.3

10.4

X
X

X

X

X

X

X

Table of Contents

101.INS
101.SCH
101.CAL
101.DEF

101.LAB
101.PRE

104

XBRL Instance Document
XBRL Taxonomy Extension Schema Document
XBRL Taxonomy Calculation Linkbase Document
XBRL Taxonomy Extension Definition Linkbase
Document
XBRL Taxonomy Label Linkbase Document
XBRL Taxonomy Presentation Linkbase
Document
Cover Page Interactive Data File (formatted as
Inline XBRL and contained in Exhibit 101)

X
X
X
X

X
X

X

#
*

**

Indicates management contract or compensatory plan or arrangement.
This certification will not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or the
Exchange Act, or otherwise subject to the liability of that section. Such certification will not be deemed to be incorporated by reference into
any filing under the Securities Act of 1933, as amended, or the Exchange Act, except to the extent specifically incorporated by reference
into such filing.
Portions of this exhibit have been omitted pursuant to Item 601(b)(10)(iv) of Regulation S-K.

Item 16. Form 10-K Summary

None.

88

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

February 15, 2024

AGIOS PHARMACEUTICALS, INC.

By:

/s/ Brian Goff
Brian Goff
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/ Brian Goff
Brian Goff

/s/ Cecilia Jones
Cecilia Jones

/s/ T.J. Washburn
T.J. Washburn

/s/ Jacqualyn A. Fouse
Jacqualyn A. Fouse, Ph.D.

/s/ Rahul Ballal
Rahul Ballal, Ph.D.

/s/ Jeffrey Capello
Jeffrey Capello

/s/ Kaye Foster
Kaye Foster

/s/ Maykin Ho
Maykin Ho, Ph.D.

/s/ Catherine Owen
Catherine Owen

/s/ David Scadden
David Scadden, M.D.

/s/ David P. Schenkein
David P. Schenkein, M.D.

/s/ Cynthia Smith
Cynthia Smith

Title
Chief Executive Officer
(Principal executive officer)

Date
February 15, 2024

Chief Financial Officer
(Principal financial officer)

February 15, 2024

Vice President, Controller
(Principal accounting officer)

February 15, 2024

Chair of the Board of Directors

February 15, 2024

Director

February 15, 2024

Director

Director

February 15, 2024

February 15, 2024

Director

February 15, 2024

Director

Director

Director

February 15, 2024

February 15, 2024

February 15, 2024

Director

February 15, 2024

89

 
 
 
 
 
Table of Contents

Agios Pharmaceuticals, Inc.

Index to Consolidated Financial Statements

Report of Independent Registered Public Accounting Firm (PCAOB ID 238)
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive (Loss) Income
Consolidated Statements of Stockholders’ Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements

2
4
5
6
7
8
9

F-1

Table of Contents

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

Opinions on the Financial Statements and Internal Control over Financial Reporting

Report of Independent Registered Public Accounting Firm

We have audited the accompanying consolidated balance sheets of Agios Pharmaceuticals, Inc. and its subsidiaries (the “Company”) as of December 31,
2023 and 2022, and the related consolidated statements of operations, of comprehensive (loss) income, of stockholders’ equity and of cash flows for each
of the three years in the period ended December 31, 2023, including the related notes (collectively referred to as the “consolidated financial statements”).
We also have audited the Company's internal control over financial reporting as of December 31, 2023, based on criteria established in Internal Control -
Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of
December 31, 2023 and 2022, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2023 in
conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material
respects,  effective  internal  control  over  financial  reporting  as  of  December  31,  2023,  based  on  criteria  established  in  Internal  Control  -  Integrated
Framework (2013) issued by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting,
and for its assessment of the effectiveness of internal control over financial reporting, included in Management's Annual Report on Internal Control over
Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on the Company’s consolidated financial  statements  and  on  the
Company's internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting
Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities
laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable
assurance  about  whether  the  consolidated  financial  statements  are  free  of  material  misstatement,  whether  due  to  error  or  fraud,  and  whether  effective
internal control over financial reporting was maintained in all material respects.

Our  audits  of  the  consolidated  financial  statements  included  performing  procedures  to  assess  the  risks  of  material  misstatement  of  the  consolidated
financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test
basis,  evidence  regarding  the  amounts  and  disclosures  in  the  consolidated  financial  statements.  Our  audits  also  included  evaluating  the  accounting
principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our
audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a
material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also
included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our
opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting
and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control
over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly
reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit
preparation  of  financial  statements  in  accordance  with  generally  accepted  accounting  principles,  and  that  receipts  and  expenditures  of  the  company  are
being  made  only  in  accordance  with  authorizations  of  management  and  directors  of  the  company;  and  (iii)  provide  reasonable  assurance  regarding
prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial
statements.

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

Critical Audit Matters

The  critical  audit  matter  communicated  below  is  a  matter  arising  from  the  current  period  audit  of  the  consolidated  financial  statements  that  was
communicated or required to be communicated to the audit committee and that (i) relates to accounts or

F-2

Table of Contents

disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The
communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by
communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Revenue Recognition - PYRUKYND® Product Revenue

As described in Notes 2 and 8 to the consolidated financial statements, the Company generates product revenue from sales of PYRUKYND® to a limited
number of specialty distributors and specialty pharmacy providers, or collectively, the Customers. These Customers subsequently resell PYRUKYND® to
pharmacies or dispense directly to patients. The performance obligation related to the sale of PYRUKYND® is satisfied and revenue is recognized when
the Customer obtains control of the product, which occurs at a point in time, typically upon delivery to the Customer. Revenues from product sales are
recorded at the net sales price, or transaction price, which includes estimates of variable consideration for which reserves are established and result from
contractual adjustments, government rebates, returns and other allowances that are offered within the contracts with the Customers, healthcare providers,
payors and other indirect customers relating to the sale of its products. For the year ended December 31, 2023, the Company recognized $26.8 million of
net product revenue relating to the sale of PYRUKYND®.

The  principal  consideration  for  our  determination  that  performing  procedures  relating  to  PYRUKYND®  product  revenue  recognition  is  a  critical  audit
matter is a high degree of auditor effort in performing procedures related to the Company’s product revenue recognition.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated
financial statements. These procedures included testing the effectiveness of controls relating to the revenue recognition process, including controls over the
recording of PYRUKYND® product revenue at the transaction price once control passes to the customer. These procedures also included, among others, (i)
evaluating  management’s  revenue  recognition  policy  and  (ii)  testing  the  completeness,  accuracy,  and  occurrence  of  revenue  recognized  for  a  sample  of
product  revenue  transactions  by  obtaining  and  inspecting  source  documents,  such  as  purchase  orders,  invoices,  proof  of  delivery,  and  subsequent  cash
receipts.

/s/ PricewaterhouseCoopers LLP
Boston, Massachusetts
February 15, 2024

We have served as the Company’s auditor since 2017.

F-3

Agios Pharmaceuticals, Inc.

Consolidated Balance Sheets

Table of Contents

(In thousands, except share and per share data) December 31:
Assets
Current assets:

Cash and cash equivalents
Marketable securities
Accounts receivable, net
Inventory
Prepaid expenses and other current assets

Total current assets

Marketable securities
Operating lease assets
Property and equipment, net
Other non-current assets
Total assets

Liabilities and stockholders’ equity
Current liabilities:

Accounts payable
Accrued expenses
Operating lease liabilities
Total current liabilities

Operating lease liabilities, net of current portion
Other non-current liabilities
Total liabilities

Commitments and contingent liabilities (Note 16)
Stockholders’ equity:

Preferred stock, $0.001 par value; 25,000,000 shares authorized, no shares issued and outstanding at December
31, 2023 and 2022
Common stock, $0.001 par value; 125,000,000 shares authorized; 72,161,489 shares issued and 55,945,078
outstanding at December 31, 2023 and 71,256,118 shares issued and 55,039,707 outstanding at December 31,
2022
Additional paid-in capital
Accumulated other comprehensive loss
Accumulated deficit
Treasury stock, at cost (16,216,411 shares at December 31, 2023 and December 31, 2022)

Total stockholders’ equity
Total liabilities and stockholders’ equity

See accompanying Notes to Consolidated Financial Statements.

F-4

2023

2022

88,205  $
688,723 
2,810 
19,076 
35,021 
833,835 
29,435 
54,409 
15,382 
4,057 
937,118  $

9,780  $

43,167 
15,008 
67,955 
56,988 
1,156 
126,099 

139,259 
643,860 
2,206 
8,492 
38,955 
832,772 
313,874 
65,129 
22,987 
3,956 
1,238,718 

18,616 
30,350 
13,663 
62,629 
71,996 
3,279 
137,904 

— 
72 

— 
71 

2,436,523 
(441)
(822,649)
(802,486)
811,019 
937,118  $

2,386,325 
(12,535)
(470,561)
(802,486)
1,100,814 
1,238,718 

$

$

$

$

Table of Contents

Agios Pharmaceuticals, Inc.

Consolidated Statements of Operations

(In thousands, except share and per share data) Years Ended December 31:
Revenues:

Product revenue, net
Milestone revenue
Total revenue

Operating expenses
Cost of sales
Research and development
Selling, general and administrative

Total operating expenses
Loss from operations

Gain on sale of contingent payments
Royalty income from gain on sale of oncology business
Interest income, net
Other income, net
Net loss from continuing operations
Net income from discontinued operations, net of tax

Net (loss) income

Net loss from continuing operations per share - basic and diluted
Net income from discontinued operations per share - basic and diluted
Net (loss) income per share - basic and diluted
Weighted-average number of common shares used in computing net loss per share from
continuing operations, net income per share from discontinued operations and net (loss) income
per share – basic and diluted

$

$

$
$
$
$

2023

2022

2021

26,823  $
— 
26,823 

11,740  $
2,500 
14,240 

2,881  $

1,704  $

295,526 
119,903 
418,310 
(391,487)
— 
— 
33,344 
6,055 
(352,088)
— 

279,910 
121,673 
403,287 
(389,047)
127,853 
9,851 
12,793 
6,749 
(231,801)
— 

(352,088) $
(6.33) $
—  $
(6.33) $

(231,801) $
(4.23) $
—  $
(4.23) $

— 
— 
— 

— 
256,973 
121,445 
378,418 
(378,418)
— 
6,639 
836 
14,433 
(356,510)
1,961,225 
1,604,715 
(5.90)
32.45 
26.55 

55,651,487 

54,789,435 

60,447,346 

 See accompanying Notes to Consolidated Financial Statements.

F-5

 
Table of Contents

Agios Pharmaceuticals, Inc.

Consolidated Statements of Comprehensive (Loss) Income

(In thousands) Years Ended December 31:
Net (loss) income
Other comprehensive (loss) income

Unrealized gain (loss) on available-for-sale securities

Comprehensive (loss) income

2023
(352,088) $

2022
(231,801) $

2021
1,604,715 

12,094 
(339,994) $

(11,337)
(243,138) $

(1,303)
1,603,412 

$

$

See accompanying Notes to Consolidated Financial Statements.

F-6

 
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Agios Pharmaceuticals, Inc.

Consolidated Statements of Stockholders’ Equity

(In thousands, except share amounts)

Shares

Amount

Common Stock

Additional
Paid-In
Capital

Accumulated
Other
Comprehensive
Income (Loss)

Balance at December 31, 2020

69,293,920  $

69 

$

2,242,801 

$

105 

$

Unrealized loss on available-for-sale
securities
Net income
Stock-based compensation expense
Common stock issued under stock
incentive plan and ESPP
Repurchase of common stock
Disposition of oncology business

— 
— 
— 

1,256,711 
— 
— 

Balance at December 31, 2021

70,550,631  $

Unrealized loss on available-for-sale
securities
Net loss
Stock-based compensation expense
Common stock issued under stock
incentive plan and ESPP
Balance at December 31, 2022

Unrealized gain on available-for-sale
securities
Net loss
Stock-based compensation expense
Common stock issued under stock
incentive plan and ESPP
Balance at December 31, 2023

— 
— 
— 

705,487 

71,256,118  $

— 
— 
— 

905,371 

— 
— 
— 

2 
— 
— 

71 

— 
— 
— 

— 

71 

— 
— 
— 

1 

Accumulated
Deficit
(1,843,475)

— 
1,604,715 
— 

Treasury

Shares

Amount

Total
Stockholders’
Equity

—  $

—  $

399,500 

— 
— 
— 

— 
— 
— 

— 
— 
— 

— 
(16,216,411)
— 

— 
(802,486)
— 

(1,303)
1,604,715 
53,508 

37,296 
(802,486)
745 

— 
— 
53,508 

37,294 
— 
745 

(1,303)
— 
— 

— 
— 
— 

$

2,334,348 

$

(1,198)

$

(238,760)

(16,216,411) $

(802,486) $

1,291,975 

— 
— 
49,296 

2,681 

(11,337)
— 
— 

— 

— 
(231,801)
— 

— 

— 
— 
— 

— 

— 
— 
— 

— 

(11,337)
(231,801)
49,296 

2,681 

$

2,386,325 

$

(12,535)

$

(470,561)

(16,216,411) $

(802,486) $

1,100,814 

— 
— 
44,766 

5,432 

12,094 
— 
— 

— 

— 
(352,088)
— 

— 

— 
— 
— 

— 

— 
— 
— 

— 

12,094 
(352,088)
44,766 

5,433 

811,019 

72,161,489  $

72 

$

2,436,523 

$

(441)

$

(822,649)

(16,216,411) $

(802,486) $

See accompanying Notes to Consolidated Financial Statements.

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Agios Pharmaceuticals, Inc.

Consolidated Statements of Cash Flows

(In thousands) Years Ended December 31:

Operating activities
Net (loss) income
Less: Net income from discontinued operations
Net loss from continuing operations
Adjustments to reconcile net loss to net cash used in operating activities:

Depreciation and amortization
Stock-based compensation expense
Net (accretion of discount) amortization of premium on marketable securities
Gain on sale of contingent payments
Loss (gain) on disposal of property and equipment
Non-cash operating lease expense
Expense associated with license agreement
Realized gain on investments
Changes in operating assets and liabilities:

Accounts receivable, net
Inventory
Other receivables
Prepaid expenses and other current and non-current assets
Accounts payable
Accrued expenses
Operating lease liabilities
Other liabilities

Net cash used in operating activities - continuing operations
Net cash used in operating activities - discontinued operations
Net cash used in operating activities

Investing activities
Purchases of marketable securities
Proceeds from maturities and sales of marketable securities
Proceeds from sale of contingent payments
Payments associated with license agreement
Purchases of property and equipment
Proceeds from sale of equipment

Net cash provided by (used in) investing activities - continuing operations
Net cash provided by investing activities - discontinued operations
Net cash provided by investing activities

Financing activities
Payments on financing lease obligations
Purchase of treasury stock
Net proceeds from stock option exercises and employee stock purchase plan
Net cash provided by (used in) financing activities

Net change in cash and cash equivalents
Cash and cash equivalents at beginning of the period
Cash and cash equivalents at end of the period

Supplemental disclosure of non-cash investing and financing transactions:

Additions to property and equipment in accounts payable and accrued expenses
Net cash taxes paid
Financing lease liabilities arising from obtaining financing lease assets

2023

2022

2021

$

(352,088) $

(231,801) $

— 
(352,088)

6,623 
44,766 
(5,051)
— 
553 
10,720 
17,500 
(28)

(604)
(10,584)
— 
3,833 
(8,733)
12,817 
(13,663)
(2,123)
(296,062)
— 
(296,062)

(417,930)
674,679 
— 
(17,500)
(999)
1,325 
239,575 
— 
239,575 

— 
(231,801)

8,564 
49,296 
(1,198)
(127,853)
(48)
9,995 
— 
— 

(2,206)
(8,492)
447 
(176)
3,436 
(1,617)
(10,828)
3,003 
(309,478)
— 
(309,478)

(1,030,781)
1,146,175 
131,784 
— 
(4,881)
964 
243,261 
— 
243,261 

— 
— 
5,433 
5,433 
(51,054)
139,259 
88,205  $

55  $
1,569  $
—  $

(331)
— 
2,681 
2,350 
(63,867)
203,126 
139,259  $

158  $
—  $
—  $

$

$
$
$

1,604,715 
1,961,225 
(356,510)

9,240 
53,508 
6,949 
— 
12 
9,537 
— 
— 

— 
— 
(4,378)
(26,846)
1,863 
66 
(7,527)
— 
(314,086)
(93,234)
(407,320)

(1,378,221)
829,804 
— 
— 
(5,741)
— 
(554,158)
1,802,936 
1,248,778 

(578)
(802,486)
37,296 
(765,768)
75,690 
127,436 
203,126 

1,678 
16,078 
511 

See accompanying Notes to Consolidated Financial Statements.

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Note 1. Nature of Business

References to Agios

Agios Pharmaceuticals, Inc.

Notes to Consolidated Financial Statements

Throughout this Annual Report on Form 10-K, “the Company,” “Agios,” “we,” “us,” and “our,” and similar expressions, except where the context requires
otherwise,  refer  to  Agios  Pharmaceuticals,  Inc.  and  its  consolidated  subsidiaries,  and  “our  board  of  directors”  refers  to  the  board  of  directors  of  Agios
Pharmaceuticals, Inc.

Overview

We  are  a  biopharmaceutical  company  committed  to  transforming  patients’  lives  through  leadership  in  the  field  of  cellular  metabolism,  with  the  goal  of
creating differentiated medicines for rare diseases, with a focus on classical hematology. With a history of focused study on cellular metabolism, we have a
deep and mature understanding of this biology, which is involved in the healthy functioning of nearly every system in the body. Building on this expertise,
these  learnings  can  be  rapidly  applied  to  our  clinical  trials  with  the  goal  of  developing  medicines  that  can  have  a  significant  impact  for  patients.  We
accelerate the impact of our portfolio by cultivating connections with patient communities, healthcare professionals, partners and colleagues to discover,
develop and deliver potential therapies for rare diseases. We are located in Cambridge, Massachusetts.

The lead product candidate in our portfolio, PYRUKYND® (mitapivat), is an activator of both wild-type and mutant pyruvate kinase, or PK, enzymes for
the  potential  treatment  of  hemolytic  anemias.  In  February  2022,  the  U.S.  Food  and  Drug  Administration,  or  FDA,  approved  PYRUKYND®  for  the
treatment  of  hemolytic  anemia  in  adults  with  PK  deficiency  in  the  United  States.  In  November  2022,  we  received  marketing  authorization  from  the
European  Commission  for  PYRUKYND®  for  the  treatment  of  PK  deficiency  in  adult  patients  in  the  European  Union,  or  EU.  In  December  2022,  we
received marketing authorization in Great Britain for PYRUKYND® for the treatment of PK deficiency in adult patients under the European Commission
Decision Reliance Procedure. In addition, we are currently evaluating PYRUKYND® in clinical trials for the treatment of thalassemia, sickle cell disease,
or SCD, and in pediatric patients with PK deficiency. We are also developing (i) AG-946, a novel PK activator, for the potential treatment of lower-risk
myelodysplastic  syndrome,  or  LR  MDS,  and  hemolytic  anemias,  and  (ii)  AG-181,  our  phenylalanine  hydroxylase,  or  PAH,  stabilizer  for  the  potential
treatment of phenylketonuria, or PKU.

In  addition  to  the  aforementioned  development  programs,  in  July  2023  we  entered  into  a  license  agreement  with  Alnylam  Pharmaceuticals,  Inc.,  or
Alnylam for the development and commercialization of products containing or comprised of an siRNA preclinical development candidate discovered by
Alnylam  and  targeting  the  transmembrane  serine  protease  6,  or  TMPRSS6,  gene  and  we  intend  to  pursue  development  of  a  licensed  product  for  the
potential disease-modifying treatment of patients with polycythemia vera, or PV, a rare blood disorder.

We  are  subject  to  risks  common  to  companies  in  our  industry  including,  but  not  limited  to,  uncertainties  relating  to  conducting  preclinical  and  clinical
research and development, the manufacture and supply of products for clinical and commercial use, obtaining and maintaining regulatory approvals and
pricing  and  reimbursement  for  our  products,  market  acceptance,  managing  global  growth  and  operating  expenses,  availability  of  additional  capital,
competition, obtaining and enforcing patents, stock price volatility, dependence on collaborative relationships and third-party service providers, dependence
on key personnel, potential litigation, potential product liability claims and potential government investigations.

Alnylam License Agreement

On July 28, 2023, we entered into a license agreement with Alnylam under which we acquired the rights to develop and commercialize Alnylam’s novel
preclinical siRNA targeting the TMPRSS6 gene, as a potential disease-modifying treatment for patients with PV. Because the acquired assets do not meet
the definition of a business in accordance with ASC 805, Business Combinations, we will account for the agreement as an asset acquisition.

In accordance with the license agreement, in the twelve months ended December 31, 2023, we made an up-front payment to Alnylam and recognized in-
process  research  and  development  of  $17.5  million  which  was  recorded  in  research  and  development  expense  within  our  Consolidated  Statements  of
Operations  and  classified  as  investing  activities  within  our  Consolidated  Statements  of  Cash  Flows.  We  will  also  pay  Alnylam  for  certain  expenses
associated with the development of TMPRSS6 and these will be recorded in our Consolidated Statements of Operations as incurred. Additionally, we are
responsible to pay up to $130.0 million in potential development and regulatory milestones, in addition to sales milestones as well as tiered royalties on
annual net sales, if any, of licensed products, which may be subject to specified reductions and offsets.

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Sale of Oncology Business to Servier and Sale of Contingent Payments

On  March  31,  2021,  we  completed  the  sale  of  our  oncology  business  to  Servier  Pharmaceuticals,  LLC,  or  Servier,  which  represented  a  discontinued
operation. The transaction included the sale of our oncology business, including TIBSOVO®, our clinical-stage product candidates vorasidenib, AG-270
and AG-636, and our oncology research programs for a payment of approximately $1.8 billion in cash at the closing, subject to certain adjustments, and a
payment  of  $200.0  million  in  cash,  if,  prior  to  January  1,  2027,  vorasidenib  is  granted  new  drug  application,  or  NDA,  approval  from  the  FDA  with  an
approved  label  that  permits  vorasidenib’s  use  as  a  single  agent  for  the  adjuvant  treatment  of  patients  with  Grade  2  glioma  that  have  an  isocitrate
dehydrogenase  1  or  2  mutation  (and,  to  the  extent  required  by  such  approval,  the  vorasidenib  companion  diagnostic  test  is  granted  an  FDA  premarket
approval), as well as a royalty of 5% of U.S. net sales of TIBSOVO® from the close of the transaction through loss of exclusivity, and a royalty of 15% of
U.S.  net  sales  of  vorasidenib  from  the  first  commercial  sale  of  vorasidenib  through  loss  of  exclusivity.  Servier  also  acquired  our  co-commercialization
rights for Bristol Myers Squibb’s IDHIFA® and the right to receive a $25.0 million potential milestone payment under our prior collaboration agreement
with Celgene Corporation, or Celgene, and following the sale Servier will conduct certain clinical development activities within the IDHIFA® development
program.

In October 2022, we sold our rights to future contingent payments associated with the royalty of 5% of U.S. net sales of TIBSOVO® from the close of the
transaction through the loss of exclusivity to entities affiliated with Sagard Healthcare Partners, or Sagard, and recognized income of $127.9 million within
the gain on sale of contingent payments line item in our Consolidated Statements of Operations for the year ended December 31, 2022. We retain our rights
to the potential milestone payment and royalties from Servier if a new drug application for vorasidenib is approved by the FDA.

We recorded income from royalties of $9.9 million and $6.6 million on U.S. net sales of TIBSOVO® by Servier in the royalty income from gain on sale of
oncology business line item within the consolidated statements of operations for the years ended December 31, 2022 and December 31, 2021, respectively.

Reclassifications

Certain amounts in prior periods have been reclassified to reflect the impact of the discontinued operations treatment of the oncology business in order to
conform to the current period presentation.

Liquidity

As  of  December  31,  2023,  we  had  cash,  cash  equivalents  and  marketable  securities  of  $806.4  million.  Although  we  have  incurred  recurring  losses  and
expect to continue to incur losses for the foreseeable future, we expect our cash, cash equivalents and marketable securities to be sufficient to fund current
operations for at least the next twelve months from the issuance of the financial statements. If we are unable to raise additional funds through equity or debt
financings, we may be required to delay, limit, reduce or terminate product development or future commercialization efforts or grant rights to develop and
market products or product candidates that we would otherwise prefer to develop and market ourselves.

On April 30, 2020, we entered into an at-the-market sales agreement, or the 2020 sales agreement, with Cowen & Company LLC, or Cowen, pursuant to
which we may offer and sell shares of our common stock having an aggregate offering price of up to $250.0 million through Cowen pursuant to a universal
shelf  registration  statement  on  Form  S-3  filed  with  the  SEC  on  April  30,  2020.  As  of  December  31,  2022,  $250.0  million  in  common  stock  remained
available for future issuance under the 2020 sales agreement. On February 15, 2023, we delivered written notice to Cowen that we were terminating the
2020 sales agreement, effective on February 22, 2023. As of the termination of the 2020 sales agreement, we had not sold any shares of our common stock
under the 2020 sales agreement.

Note 2. Summary of Significant Accounting Policies

Principles of consolidation

The  consolidated  financial  statements  include  our  accounts  and  the  accounts  of  our  wholly  owned  subsidiaries,  Agios  Securities  Corporation,  Agios
International Sarl (GmbH), Agios Germany GmbH, Agios Netherlands B.V., Agios Italy S.R.L., Agios France SARL, and Agios Limited. All intercompany
transactions have been eliminated in consolidation. The consolidated financial statements have been prepared in conformity with U.S. generally accepted
accounting principles, or U.S. GAAP.

Use of estimates

The preparation of our consolidated financial statements requires us to make estimates, judgments and assumptions that may affect the reported amounts of
assets, liabilities, equity, revenues and expenses and related disclosure of contingent assets and liabilities. On an ongoing basis we evaluate our estimates,
judgments and methodologies. We base our estimates on historical experience and on various other assumptions that we believe are reasonable, the results
of which form the basis for making judgments about the carrying values of assets, liabilities and equity and the amount of revenues and expenses. The full
extent to

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which  the  recent  COVID-19  pandemic,  or  other  pandemics  or  public  health  emergencies,  may  in  the  future  directly  or  indirectly  impact  our  business,
results of operations and financial condition, including expenses, reserves and allowances, clinical trials, research and development costs and employee-
related amounts, will depend on future developments that are highly uncertain.

Cash and cash equivalents

We consider highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. Cash equivalents are stated at fair
value.

Accounts receivable, net

Our trade accounts receivable arise from product sales and represent amounts due from specialty distributors and specialty pharmacy providers in the U.S.
We monitor the financial performance and creditworthiness of our customers so that we can properly assess and respond to changes in their credit profile.
We reserve against these receivables for estimated losses that may arise from a customer’s inability to pay. Amounts determined to be uncollectible are
charged or written-off against the reserve.

Inventory

Inventory  is  stated  at  the  lower  of  cost  or  estimated  net  realizable  value  on  a  first-in,  first-out  basis.  Prior  to  the  regulatory  approval  of  our  product
candidates, we incur expenses for the manufacture of drug product that could potentially be available to support the commercial launch of those products.
Until the date at which regulatory approval has been received or is otherwise considered probable, we record all such costs as research and development
expenses. Upon approval of our wholly owned product, PYRUKYND®, by the FDA on February 17, 2022 for the treatment of hemolytic anemia in adults
with PK deficiency in the United States, we began to capitalize inventories of PYRUKYND®.

Revenue recognition

Under Accounting Standards Codification 606, Revenue from Contracts with Customers, or ASC 606, revenue is recognized when the customer obtains
control of promised goods or services, in an amount that reflects the consideration that we expect to receive in exchange for those goods or services. To
determine revenue recognition for arrangements that have been determined to be within the scope of ASC 606, we perform the following five steps: (i)
identify  the  contract(s)  with  a  customer;  (ii)  identify  the  performance  obligations  in  the  contract;  (iii)  determine  the  transaction  price;  (iv)  allocate  the
transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) we satisfy a performance obligation. We only apply
the  five-step  model  to  contracts  when  it  is  probable  that  we  will  collect  the  consideration  we  are  entitled  to  in  exchange  for  the  goods  or  services  we
transfer to the customer.

This  standard  applies  to  all  contracts  with  customers,  except  for  contracts  that  are  within  the  scope  of  other  standards,  such  as  leases,  insurance,
collaboration arrangements and financial instruments.

Once the contract is determined to be within the scope of ASC 606, we assess the goods or services promised within each contract and determine those that
are performance obligations, and assess whether each promised good or service is distinct. We will 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.

Product Revenue

We generate product revenue from sales of PYRUKYND® to a limited number of specialty distributors and specialty pharmacy providers, or collectively,
the  Customers.  These  Customers  subsequently  resell  PYRUKYND®  to  pharmacies  or  dispense  PYRUKYND®  directly  to  patients.  In  addition  to
distribution agreements with Customers, we enter into arrangements with healthcare providers and payors that provide for government-mandated and/or
privately-negotiated rebates, chargebacks and discounts with respect to the purchase of PYRUKYND®.

The performance obligation related to the sale of PYRUKYND® is satisfied and revenue is recognized when the Customer obtains control of the product,
which occurs at a point in time, typically upon delivery to the Customer.

Revenues from product sales are recorded at the net sales price, or transaction price, which includes estimates of variable consideration for which reserves
are established and result from contractual adjustments, government rebates, returns and other allowances that are offered within the contracts with our
Customers, healthcare providers, payors and other indirect customers relating to the sale of our products.

Contractual Adjustments. We generally provide Customers with discounts, including prompt pay discounts, and allowances that are explicitly stated
in the contracts and are recorded as a reduction of revenue in the period the related product revenue is recognized. In addition, we receive sales order
management, data and distribution services from certain Customers.

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Chargebacks  and  discounts  represent  the  estimated  obligations  resulting  from  contractual  commitments  to  sell  products  to  qualified  healthcare
providers at prices lower than the list prices charged to Customers who directly purchase the product from us. Customers charge us for the difference
between  what  they  pay  for  the  product  and  the  ultimate  selling  price  to  the  qualified  healthcare  providers.  These  reserves  are  estimated  using  the
expected value method, based upon a range of possible outcomes that are probability-weighted for the estimated channel mix and are established in
the same period that the related revenue is recognized, resulting in a reduction of product revenue.

Government Rebates.  Government  rebates  include  Medicare,  TriCare,  and  Medicaid  rebates,  which  we  estimate  using  the  expected  value  method,
based upon a range of possible outcomes that are probability-weighted for the estimated payor mix. These reserves are recorded in the same period
the  related  revenue  is  recognized,  resulting  in  a  reduction  of  product  revenue.  For  Medicare,  we  also  estimate  the  number  of  patients  in  the
prescription drug coverage gap for whom we will owe an additional liability under the Medicare Part D program.

Returns. We estimate the amount of product sales that may be returned by Customers and record this estimate as a reduction of revenue in the period
the  related  product  revenue  is  recognized.  We  currently  estimate  product  return  liabilities  using  the  expected  value  method,  based  on  available
industry data, including our visibility into the inventory remaining in the distribution channel.

Cost of sales

Cost of sales consists primarily of manufacturing costs for sales of PYRUKYND®. Based on our policy to expense costs associated with the manufacturing
of our products prior to regulatory approval, certain of the manufacturing costs associated with product shipments of PYRUKYND® recorded during the
twelve months ended December 31, 2023 and 2022 were expensed prior to February 17, 2022 and, therefore, are not included in costs of sales during the
twelve months ended December 31, 2023 and 2022.

Marketable securities

Marketable securities at December 31, 2023 and 2022 consisted of investments in U.S. Treasuries, government securities and corporate debt securities. We
determine  the  appropriate  classification  of  the  securities  at  the  time  they  are  acquired  and  evaluate  the  appropriateness  of  such  classifications  at  each
balance sheet date. We classify our marketable securities as available-for-sale pursuant to ASC 320, Investments – Debt and Equity Securities. Marketable
securities are recorded at fair value. Unrealized gains and losses are included as a component of accumulated other comprehensive (loss) income in the
consolidated balance sheets and statements of stockholders’ equity and a component of total comprehensive (loss) income in the consolidated statements of
comprehensive (loss) income, until realized. Realized gains and losses are included in investment income on a specific-identification basis.

At December 31, 2023 and 2022, we held both current and non-current investments. Investments classified as current are those that: (i) have a maturity of
less than one year, or (ii) have a maturity of one  to  two  years  but  we  intend  to  liquidate  within  the  next  twelve  months.  Investments  classified  as  non-
current are those that: (i) have a maturity of one  to  two  years,  and  (ii)  we  do  not  intend  to  liquidate  within  the  next  one  year,  although  these  funds  are
available for use and therefore classified as available-for-sale.

We review marketable securities for impairment whenever the fair value of a marketable security is less than the amortized cost and evidence indicates that
a marketable security’s carrying amount is not recoverable. Unrealized losses are evaluated for impairment under ASC 326, Financial Instruments - Credit
Losses, to determine if the impairment is credit-related or noncredit-related. Credit-related impairment is recognized as an allowance on the balance sheet
with a corresponding adjustment to earnings, and noncredit-related impairment is recognized in other comprehensive (loss) income, net of taxes. Evidence
considered in this assessment includes reasons for the impairment, compliance with our investment policy, the severity of the impairment, collectability of
the security, and any adverse conditions specifically related to the security, an industry, or geographic area.

Fair value measurements

We record cash equivalents and marketable securities at fair value. ASC 820, Fair Value Measurements and Disclosures, establishes a fair value hierarchy
for those instruments measured at fair value that distinguishes between assumptions based on market data (observable inputs) and our own assumptions
(unobservable inputs). The hierarchy consists of three levels:

Level 1 – Unadjusted quoted prices in active markets for identical assets or liabilities.

Level  2  –  Quoted  prices  for  similar  assets  and  liabilities  in  active  markets,  quoted  prices  in  markets  that  are  not  active,  or  inputs  which  are
observable, either directly or indirectly, for substantially the full term of the asset or liability.

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Level 3 – Unobservable inputs that reflect our own assumptions about the assumptions market participants would use in pricing the asset or liability
in which there is little, if any, market activity for the asset or liability at the measurement date.

Our  financial  assets,  which  include  cash  equivalents  and  marketable  securities,  have  been  initially  valued  at  the  transaction  price,  and  subsequently
revalued  at  the  end  of  each  reporting  period,  utilizing  third-party  pricing  services  or  other  observable  market  data.  The  pricing  services  utilize  industry
standard valuation models, including both income and market based approaches, and observable market inputs to determine value. After completing our
validation procedures, we did not adjust or override any fair value measurements provided by the pricing services as of December 31, 2023 or 2022. Fair
value information for these assets, including their classification in the fair value hierarchy is included in Note 3, Fair Value Measurements.

There have been no changes to the valuation methods during the years ended December 31, 2023 and 2022. We evaluate transfers between levels at the end
of each reporting period.

The carrying amounts of other receivables, prepaid expenses and other current assets, accounts payable, and accrued expenses approximate their fair values
due to their short-term maturities.

Concentrations of credit risk

Financial  instruments  which  potentially  subject  us  to  credit  risk  consist  primarily  of  cash,  cash  equivalents,  and  marketable  securities.  We  hold  these
investments in highly rated financial institutions, and, by policy, limit the amounts of credit exposure to any one financial institution. These amounts at
times may exceed federally insured limits. We have not experienced any credit losses in such accounts and do not believe we are exposed to any significant
credit risk on these funds. We have no off-balance sheet concentrations of credit risk, such as foreign currency exchange contracts, option contracts, or
other hedging arrangements.

Property and equipment

Property  and  equipment  consist  of  laboratory  equipment,  computer  equipment  and  software,  leasehold  improvements,  furniture  and  fixtures,  and  office
equipment. Costs of major additions and betterment are capitalized; maintenance and repairs, which do not improve or extend the life of the respective
assets, are charged to expense as incurred. Upon retirement or sale, the cost of the disposed asset and the related accumulated depreciation are removed
from the accounts and the resulting gain or loss is recognized.

Property and equipment is stated at cost, and depreciated using the straight-line method over the estimated useful lives of the respective assets:

Laboratory equipment
Computer equipment and software
Furniture and fixtures
Office equipment

Years
5
3
5
5

Leasehold improvements are amortized over the lesser of the remaining lease term or the estimated useful life of the improvement.

Impairment of long-lived assets

We periodically evaluate our long-lived assets for potential impairment in accordance with ASC 360, Property, Plant and Equipment. Potential impairment
is  assessed  when  there  is  evidence  that  events  or  changes  in  circumstances  indicate  that  the  carrying  amount  of  an  asset  may  not  be  recovered.
Recoverability of these assets is assessed based on the undiscounted expected future cash flows from the assets, considering a number of factors, including
past operating results, budgets and economic projections, market trends and product development cycles. If impairments are identified, assets are written
down to their estimated fair value. We did not recognize any impairment charges through December 31, 2023.

Leases

We determine if an arrangement is a lease at inception. An arrangement is determined to contain a lease if the contract conveys the right to control the use
of an identified property or equipment for a period of time in exchange for consideration. If we can benefit from the various underlying assets of a lease on
their  own  or  together  with  other  resources  that  are  readily  available,  or  if  the  various  underlying  assets  are  neither  highly  dependent  on  nor  highly
interrelated with other underlying assets in the

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arrangement,  they  are  considered  to  be  a  separate  lease  component.  In  the  event  multiple  underlying  assets  are  identified,  the  lease  consideration  is
allocated to the various components based on each of the component’s relative fair value.

Operating lease assets represent our right to use an underlying asset for the lease term and operating lease liabilities represent our obligation to make lease
payments arising from the leasing arrangement. Operating lease assets and operating lease liabilities are recognized at commencement date based on the
present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, in determining the operating lease liabilities we
use an estimate of our incremental borrowing rate. The incremental borrowing rate is determined using two alternative credit scoring models to estimate
our  credit  rating,  adjusted  for  collateralization.  The  calculation  of  the  operating  lease  assets  includes  any  lease  payments  made  and  excludes  any  lease
incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option.

For  operating  leases,  we  record  operating  lease  assets  and  lease  liabilities  in  our  consolidated  balance  sheets.  Lease  expense  for  lease  payments  is
recognized on a straight-line basis over the lease term. Short-term leases, or leases that have a lease term of 12 months or less at commencement date, are
excluded from this treatment and are recognized on a straight-line basis over the term of the lease.

We have not entered into any material short-term leases or financing leases as of December 31, 2023.

Research and development costs

Research  and  development  costs,  including  those  accrued  as  of  each  balance  sheet  date,  are  expensed  as  incurred.  These  costs  include  salaries  and
personnel-related  costs,  consulting  fees,  fees  paid  for  contract  research  services,  fees  paid  to  contract  research  organizations,  or  CROs,  and  other  third
parties in connection with clinical trials and preclinical development activities, fees paid to investigative sites in connection with clinical studies, the costs
associated with the product manufacturing, development, and distribution of clinical supplies, the costs of laboratory equipment and facilities, and other
external costs.

Nonrefundable  advance  payments  for  goods  or  services  to  be  received  in  the  future  for  use  in  research  and  development  activities  are  deferred  and
capitalized.  Additionally,  there  may  be  instances  in  which  payments  made  to  our  vendors  will  exceed  the  level  of  services  provided,  and  result  in  a
prepayment  of  the  research  and  development  expense.  The  capitalized  amounts  are  expensed  as  the  related  goods  are  delivered  or  the  services  are
performed. We estimate the time period over which services will be performed and the level of effort to be expended in each period. If the actual timing of
the performance of services or the level of effort varies from our estimate, we adjust the accrual or prepaid accordingly.

Stock-based compensation

We account for stock-based compensation awards in accordance with ASC 718, Compensation –Stock Compensation, or ASC 718. For stock-based awards
granted to employees, non-employees and members of the board of directors for their services and for participation in our employee stock purchase plan,
we  estimate  the  grant  date  fair  value  of  each  option  award  using  the  Black-Scholes  option-pricing  model.  The  use  of  the  Black-Scholes  option-pricing
model requires us to make assumptions with respect to the expected term of the option, the expected volatility of the common stock consistent with the
expected  life  of  the  option,  risk-free  interest  rates  and  expected  dividend  yields  of  the  common  stock.  For  awards  subject  to  service-based  vesting
conditions, we recognize stock-based compensation expense equal to the grant date fair value of stock options on a straight-line basis over the requisite
service period. For awards subject to performance-based vesting conditions, we recognize stock-based compensation expense if the performance condition
is considered probable of achievement using management’s best estimates.

Income taxes

Income taxes are recorded in accordance with ASC 740, Accounting for Income Taxes, or ASC 740, 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  our
financial statements or tax returns. We determine our deferred tax assets and liabilities based on differences between the financial reporting and tax bases of
assets and liabilities, which are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. Valuation
allowances are provided, if based upon the weight of available evidence, it is more likely than not that some or all of the deferred tax assets will not be
realized.

We also account for uncertain tax positions in accordance with the provisions of ASC 740. When uncertain tax positions exist, we recognize the tax benefit
of tax positions to the extent that the benefit will more likely than not be realized. The determination as to whether the tax benefit will more likely than not
be realized is based upon the technical merits of the tax position as well as consideration of the available facts and circumstances.

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Comprehensive (loss) income

Comprehensive  (loss)  income  is  defined  as  the  change  in  equity  of  a  business  enterprise  during  a  period  from  transactions,  and  other  events  and
circumstances, and currently consists of net loss and unrealized gains and losses on available-for-sale securities. Accumulated other comprehensive (loss)
income consists entirely of unrealized gains and losses from available-for-sale securities as of December 31, 2023 and 2022.

Net (loss) income per share

Basic  net  (loss)  income  per  share  is  calculated  by  dividing  net  (loss)  income  by  the  weighted-average  shares  outstanding  during  the  period,  without
consideration for common stock equivalents. Diluted net (loss) income per share is calculated by adjusting weighted-average shares outstanding for the
dilutive effect of common stock equivalents outstanding for the period, determined using the treasury-stock method. For purposes of the dilutive net (loss)
income  per  share  calculation,  stock  options,  restricted  stock  units,  or  RSUs,  performance-based  stock  units,  or  PSUs,  and  market-based  stock  units,  or
MSUs, for which the performance and market vesting conditions, respectively, have been deemed probable, and employee stock purchase plan shares are
considered  to  be  common  stock  equivalents  but  are  excluded  from  the  calculation  of  diluted  net  (loss)  income  per  share  as  their  effect  would  be  anti-
dilutive.

We  utilize  the  control  number  concept  in  the  computation  of  diluted  earnings  per  share  to  determine  whether  potential  common  stock  equivalents  are
dilutive. The control number used is loss from continuing operations. The control number concept requires that the same number of potentially dilutive
securities applied in computing diluted earnings per share from continuing operations be applied to all other categories of income or loss, regardless of their
anti-dilutive effect on such categories. Since we had a net loss from continuing operations for all periods presented, no dilutive effect has been recognized
in the calculation of income (loss) from discontinued operations per share or net (loss) income per share.

Segment and geographic information

Operating  segments  are  identified  as  components  of  an  enterprise  about  which  separate  discrete  financial  information  is  available  for  evaluation  by  the
chief operating decision maker or decision-making group in making decisions on how to allocate resources and assess performance. Our chief operating
decision maker is the chief executive officer. Our chief operating decision maker and we view our operations and manage our business as one operating
segment.

Discontinued operations

We accounted for the sale of our oncology business in the first quarter of 2021 in accordance with ASC 205, Discontinued Operations  and  Accounting
Standards Update, or ASU, No. 2014-08, Reporting of Discontinued Operations and Disclosures of Disposals of Components of an Entity. We followed the
held-for-sale criteria as defined in ASC 360, Property, Plant and Equipment, and ASC 205. ASC 205 requires that a component of an entity that has been
disposed of or is classified as held for sale and has operations and cash flows that can be clearly distinguished from the rest of the entity be reported as
assets held for sale and discontinued operations. In the period a component of an entity has been disposed of or classified as held for sale, the results of
operations  for  the  periods  presented  are  reclassified  into  separate  line  items  in  the  consolidated  statements  of  operations.  Assets  and  liabilities  are  also
reclassified  into  separate  line  items  on  the  related  consolidated  balance  sheets  for  the  periods  presented.  The  statements  of  cash  flows  for  the  periods
presented  are  also  reclassified  to  reflect  the  results  of  discontinued  operations  as  separate  line  items.  ASU  2014-08  requires  that  only  a  disposal  of  a
component of an entity, or a group of components of an entity, that represents a strategic shift that has, or will have, a major effect on the reporting entity’s
operations and financial results be reported in the financial statements as discontinued operations. ASU 2014-08 also provides guidance on the financial
statement presentations and disclosures of discontinued operations.

Due  to  the  sale  of  our  oncology  business  during  the  first  quarter  of  2021,  in  accordance  with  ASC  205,  we  have  classified  the  results  of  the  oncology
business  as  discontinued  operations  in  our  consolidated  statements  of  operations  and  cash  flows  for  all  periods  presented,  and  refer  to  Note  15,
Discontinued Operations. All amounts included in the notes to the consolidated financial statements relate to continuing operations unless otherwise noted.

Treasury stock

Treasury stock purchases are accounted for under the cost method whereby the entire cost of the acquired stock is recorded as treasury stock.

Recent accounting pronouncements

Accounting standards that have been issued by the Financial Accounting Standards Board or other standards-setting bodies that do not require adoption
until a future date are not expected to have a material impact on our financial statements upon adoption.

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Subsequent events

We considered events or transactions occurring after the balance sheet date, but prior to the issuance of the consolidated financial statements, for potential
recognition  or  disclosure  in  our  consolidated  financial  statements.  All  significant  subsequent  events  have  been  properly  disclosed  in  the  consolidated
financial statements.

Note 3. Fair Value Measurements

The following table summarizes our cash equivalents and marketable securities measured at fair value and by level (as described in Note 2, Summary of
Significant Accounting Policies) on a recurring basis as of December 31, 2023:
(In thousands)
Cash equivalents
Total cash equivalents

30,123  $
30,123 

—  $
— 

—  $
— 

Level 3

Level 2

Level 1

Total

$

30,123 
30,123 

Marketable securities:
U.S. Treasuries
Government securities
Corporate debt securities

Total marketable securities
Total cash equivalents and marketable securities

— 
— 
— 
— 
30,123  $

35,652 
257,020 
425,486 
718,158 
718,158  $

$

— 
— 
— 
— 
—  $

35,652 
257,020 
425,486 
718,158 
748,281 

There were no transfers between Level 1 and Level 2 and we had no financial assets or liabilities that were classified as Level 3 at any point during the year
ended December 31, 2023.

Note 4. Marketable Securities

Marketable securities at December 31, 2023 consisted of the following:

(In thousands)
Current:

U.S. Treasuries
Government securities
Corporate debt securities

Total Current

Non-current:

U.S. Treasuries
Government securities
Corporate debt securities

Total Non-current
Total marketable securities

Amortized
Cost

Unrealized
Gains

Unrealized
Losses

Fair
 Value

30,876  $
247,460 
411,045 
689,381 

4,802 
9,986 
14,430 
29,218 
718,599  $

—  $
194 
874 
1,068 

30 
75 
112 
217 
1,285  $

(56) $
(695)
(975)
(1,726)

— 
— 
— 
— 
(1,726) $

30,820 
246,959 
410,944 
688,723 

4,832 
10,061 
14,542 
29,435 
718,158 

$

$

F-16

 
 
 
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Marketable securities at December 31, 2022 consisted of the following:

(In thousands)
Current:

U.S. Treasuries
Government securities
Corporate debt securities

Total Current

Non-current:

U.S. Treasuries
Government securities
Corporate debt securities

Total Non-current
Total marketable securities

Amortized
Cost

Unrealized
Gains

Unrealized
Losses

Fair
Value

$

$

68,175  $
220,901 
363,263 
652,339 

17,418 
117,475 
183,037 
317,930 
970,269  $

3  $
8 
1 
12 

4 
7 
76 
87 
99  $

(811) $

(5,289)
(2,391)
(8,491)

(193)
(1,659)
(2,291)
(4,143)
(12,634) $

67,367 
215,620 
360,873 
643,860 

17,229 
115,823 
180,822 
313,874 
957,734 

There were no material realized gains or losses on marketable securities for the years ended December 31, 2023 and 2022.

At December 31, 2023 and 2022, we held 151 and 259 debt securities, respectively, that were in an unrealized loss position for less than one year. We did
not record an allowance for credit losses as of December 31, 2023 and 2022 related to these securities. The aggregate fair value of debt securities in an
unrealized loss position at December 31, 2023 and 2022 was $513.5 million and $868.2 million, respectively. There were no individual securities that were
in a significant unrealized loss position as of December 31, 2023 and 2022. We regularly review the securities in an unrealized loss position and evaluate
the current expected credit loss by considering factors such as historical experience, market data, issuer-specific factors, and current economic conditions.
We do not consider these marketable securities to be impaired as of December 31, 2023 and 2022.

Note 5. Inventory

Inventory, which consists of commercial supply of PYRUKYND®, consisted of the following:

(In thousands)
Raw materials
Work-in-process
Finished goods
Total inventory

Note 6. Leases

$

$

December 31, 2023

51  $

17,568 
1,457 
19,076  $

December 31, 2022
— 
7,550 
942 
8,492 

Our  building  leases  are  comprised  of  office  and  laboratory  space  under  non-cancelable  operating  leases.  These  lease  agreements  have  remaining  lease
terms of four years and contain various clauses for renewal at our option. The renewal options were not included in the calculation of the operating lease
assets and the operating lease liabilities as the renewal options are not reasonably certain of being exercised. The lease agreements do not contain residual
value guarantees.

We  currently  lease  approximately  146,000  square  feet  at  88  Sidney  Street,  43,000  square  feet  at  64  Sidney  Street,  and  13,000  square  feet  at  38  Sidney
Street, Cambridge, Massachusetts. All leases, as amended, expire on February 29, 2028. At the end of the initial lease period, we have the option to extend
the leases at all facilities for two consecutive five-year periods at the fair market rent at the time of the extension.

The components of lease expense and other information related to leases were as follows:
(In thousands)
Operating lease costs
Cash paid for amounts included in the measurement of operating lease liabilities

2023

2022

2021

$

15,227  $
18,170 

15,227  $
17,035 

15,229 
14,411 

We have not entered into any material short-term leases or financing leases as of December 31, 2023.

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Table of Contents

In arriving at the operating lease liabilities as of December 31, 2023, we applied the weighted-average incremental borrowing rate of 5.7% from inception
over a weighted-average remaining lease term of 4.2 years. In arriving at the operating lease liabilities as of December 31, 2022, we applied the weighted-
average incremental borrowing rate of 5.7% over a weighted-average remaining lease term of 5.2 years.

As of December 31, 2023, undiscounted minimum rental commitments under non-cancelable leases, for each of the next five years and total thereafter,
were as follows:
(In thousands)
2024
2025
2026
2027
2028
Thereafter
Undiscounted minimum rental commitments
Interest
Total operating lease liabilities

17,142 
19,506 
20,151 
20,755 
3,479 
— 
81,033 
(9,037)
71,996 

$

$

We provided our landlord a security deposit of $2.9 million as security for our leases, which is included within other non-current assets on our consolidated
balance sheet.

In August 2021, we entered into a long-term sublease agreement for 13,000 square feet of the office space at 38 Sidney Street, Cambridge, Massachusetts,
with the term of the lease running through December 2024. In April 2022, we entered into a long-term sublease agreement for 27,000 square feet of the
office  space  at  64  Sidney  Street,  Cambridge,  Massachusetts,  with  the  term  of  the  lease  running  through  April  2025.  At  the  end  of  the  initial  sublease
periods, the subtenant has the option to extend the leases for one additional 6-month period.

In  May  2023,  we  entered  into  a  long-term  sublease  agreement  for  7,407  square  feet  of  office  space  on  the  first  floor  of  64  Sidney  Street,  Cambridge,
Massachusetts, with the term of the lease running through April 2025. At the end of the initial sublease period, the subtenant has the option to extend the
lease for one additional year, followed by a second extension option for twenty-two additional months.

We recorded operating sublease income of $6.1 million and $4.1 million for the years ended December 31, 2023 and December 31, 2022, respectively, in
other income, net in the consolidated statements of operations. We received a security deposit from our sublessee of approximately $1.2 million which is
recorded within other non-current assets on our consolidated balance sheet.

As of December 31, 2023, the future minimum lease payments to be received under the long-term sublease agreements were as follows:
(In thousands)
2024
2025
Total

$

5,078 
1,310 
6,388 

Note 7. Accrued Expenses

Accrued expenses consisted of the following at December 31:
(In thousands)
Accrued compensation
Accrued research and development costs
Accrued professional fees
Accrued other
Total accrued expenses

F-18

2023

2022

$

$

23,232  $
15,463 
3,115 
1,357 
43,167  $

18,105 
8,425 
2,435 
1,385 
30,350 

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Note 8. Product Revenue

We generate product revenue from sales of PYRUKYND® to a limited number of specialty distributors and specialty pharmacy providers, or collectively,
the  Customers.  These  Customers  subsequently  resell  PYRUKYND®  to  pharmacies  or  dispense  PYRUKYND®  directly  to  patients.  In  addition  to
distribution agreements with Customers, we enter into arrangements with healthcare providers and payors that provide for government-mandated and/or
privately-negotiated rebates, chargebacks and discounts with respect to the purchase of PYRUKYND®.

The performance obligation related to the sale of PYRUKYND® is satisfied and revenue is recognized when the Customer obtains control of the product,
which occurs at a point in time, typically upon delivery to the Customer.

Product revenue, net, was as follows for the years ended December 31:

(In thousands)
Product revenue, net

Reserves for Variable Consideration

2023

2022

2021

$

26,823  $

11,740  $

— 

Revenues from product sales are recorded at the net sales price, or transaction price, which includes estimates of variable consideration for which reserves
are established and result from contractual adjustments, government rebates, returns and other allowances that are offered within the contracts with our
Customers, healthcare providers, payors and other indirect customers relating to the sale of our products.

The following tables summarize balances and activity in each of the product revenue allowance and reserve categories for the years ended December 31,
2023 and December 31, 2022:

(In thousands)
Balance at December 31, 2022

Current provisions relating to sales in the current year
Adjustments relating to prior years
Payments/returns relating to sales in the current year
Payments/returns relating to sales in the prior years

Balance at December 31, 2023

(In thousands)
Balance at December 31, 2021

Current provisions relating to sales in the current year
Adjustments relating to prior years
Payments/returns relating to sales in the current year
Payments/returns relating to sales in the prior years

Balance at December 31, 2022

Contractual
Adjustments

Government
Rebates

Returns

Total

65  $

1,079 
— 
(938)
(50)
156  $

573  $

2,086 
(237)
(1,003)
(335)
1,084  $

133  $

2,182 
(77)
(1,958)
(48)
232  $

771 
5,347 
(314)
(3,899)
(433)
1,472 

Contractual
Adjustments

Government
Rebates

Returns

Total

—  $
497 
— 
(432)
— 
65  $

—  $
912 
— 
(339)
— 
573  $

—  $
133 
— 
— 
— 
133  $

— 
1,542 
— 
(771)
— 
771 

$

$

$

$

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Table of Contents

Total revenue-related reserves above, included in our consolidated balance sheets, are summarized as follows:

(In thousands)
Reduction of accounts receivable
Component of accrued expenses
Total revenue-related reserves

December 31, 2023

December 31, 2022

$

$

151  $

1,321 
1,472  $

60 
711 
771 

The following table presents changes in our contract assets, which consisted of accounts receivable, net:

(In thousands)
Beginning balance
   Additions 
   Deductions 
Ending balance

(1)

(1)

December 31, 2023
$

2,206  $

31,855 
(31,251)

$

2,810  $

December 31, 2022
— 
13,283 
(11,077)
2,206 

(1) Additions to contract assets relate to amounts billed to Customers for product sales, and deductions to contract assets primarily relate to collection of receivables during the reporting period.

Note 9. Share-Based Payments

2023 Stock Incentive Plan and Inducement Grants

In June 2023, our stockholders approved the 2023 Stock Incentive Plan, or the 2023 Plan. The 2023 Plan provides for the grant of incentive stock options,
nonstatutory stock options, stock appreciation rights, restricted stock awards, restricted stock units, or RSUs, performance-based share units, or PSUs, and
other stock-based awards to employees, advisors, consultants and non-employee directors.

Following the adoption of the 2023 Plan, we ceased granting equity awards under the 2013 Stock Incentive Plan, or the 2013 Plan. Any outstanding equity
awards that were previously granted under the 2013 Plan continue to be governed by their terms. Following adoption of the 2013 Plan, we ceased granting
equity awards under the 2007 Stock Incentive Plan, or the 2007 Plan. There are no outstanding equity awards under the 2007 Plan.

In connection with the start of employment of our Chief Executive Officer and Chief Financial Officer in 2022, and our Chief Commercial Officer in 2023,
our  board  of  directors  granted  each  of  them  equity  awards  in  the  form  of  stock  options,  RSUs  and  PSUs,  which  awards  were  made  outside  our  equity
incentive plans as inducements material to their respective entry into employment with us in accordance with Nasdaq Listing Rule 5635(c)(4).

As of December 31, 2023, the maximum number of shares reserved under the 2013 Plan, the 2023 Plan and the inducement grants described above was
12,004,551, and we had 4,989,341 shares available for future issuance under the 2023 Plan.

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Table of Contents

Stock options

The following table summarizes the stock option activity of all stock incentive plans for the year ended December 31, 2023:

Outstanding at December 31, 2022

Granted
Exercised
Forfeited/Expired

Outstanding at December 31, 2023
Exercisable at December 31, 2023
Vested and expected to vest at December 31, 2023

Number of
Stock
Options

5,772,564  $
886,795 
(235,401)
(1,160,277)
5,263,681  $
3,344,010  $
5,263,681  $

Weighted-
Average
Exercise
Price

48.81 
25.84 
12.83 
56.10 
44.94 
53.55 
44.94 

Weighted-
Average
Remaining
Contractual
Term
(in years)

Aggregate
Intrinsic
Value (in
thousands)

6.50 $

5,362 

6.36 $
5.02 $
6.36 $

423 
398 
423 

The weighted-average grant date fair value of options granted was $14.32, $15.64 and $31.20 during the years ended December 31, 2023, 2022 and 2021,
respectively. The total intrinsic value of options exercised was $2.9 million, $0.3 million and $8.5 million during the years ended December 31, 2023, 2022
and 2021, respectively.

At  December  31,  2023,  the  total  unrecognized  compensation  expense  related  to  unvested  stock  option  awards  was  $27.8  million,  which  we  expect  to
recognize over a weighted-average period of approximately 2.40 years.

Restricted stock units

Upon vesting, each RSU entitles the holder to receive a specified number of shares of our common stock. The following table presents RSU activity for the
year ended December 31, 2023:

Unvested shares at December 31, 2022
Granted
Vested
Forfeited
Unvested shares at December 31, 2023

Number of
Stock Units

Weighted-Average
Grant Date
Fair Value

1,117,921  $
914,943 
(464,881)
(221,282)
1,346,701  $

38.30 
25.93 
41.36 
33.25 
29.67 

As of December 31, 2023, there was approximately $22.6 million of total unrecognized compensation expense related to RSUs, which we expect to be
recognized over a weighted-average period of 1.75 years.

Performance-based stock units

At the achievement of the performance-based and service-based vesting criteria, each PSU entitles the holder to receive a specified number of shares of our
common stock. The following table presents PSU activity for the year ended December 31, 2023:

Unvested shares at December 31, 2022
Granted
Vested
Forfeited
Unvested shares at December 31, 2023

Number of
Stock Units

Weighted-Average
Grant Date
Fair Value

430,243  $
125,897 
(92,257)
(101,750)
362,133  $

35.87 
25.23 
30.18 
46.39 
30.66 

Included in unvested shares were 145,023 shares with performance-based vesting criteria that were considered probable of achievement at December 31,
2023 and vested in January 2024. Stock-based compensation expense associated with these PSUs is recognized if the underlying performance condition is
considered probable of achievement using our management’s best estimates. As of December 31, 2023, there was no unrecognized compensation expense
related to PSUs with performance-

F-21

 
 
 
 
 
 
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based vesting criteria that are considered probable of achievement that we expect to recognize. There is $5.9 million of total unrecognized compensation
expense related to PSUs with performance-based vesting criteria that are considered not probable of achievement.

Market-based stock units

We have issued certain equity awards that contain market based vesting conditions, in which shares of stock are earned at vesting based on stock price
performance. The fair value of MSUs are estimated using a Monte Carlo simulation model. Assumptions and estimates utilized in the model include the
risk-free interest rate, dividend yield, expected stock volatility and the estimated period to achievement of the market condition.

The following table presents MSU activity for the year ended December 31, 2023:

Unvested shares at December 31, 2022
Granted
Unvested shares at December 31, 2023

Number of
Stock Units

Weighted-Average
Grant Date
Fair Value

42,695  $
— 
42,695  $

41.50 
— 
41.50 

As of December 31, 2023, there was no remaining unrecognized compensation expense related to MSUs.

2013 Employee Stock Purchase Plan

In June 2013, our Board of Directors adopted, and in July 2013 our stockholders approved, the 2013 Employee Stock Purchase Plan, or the 2013 ESPP. On
January 1, 2023, the annual increase for the 2013 ESPP resulted in an additional 509,091 shares authorized for issuance. We issued 112,832 shares and
104,867 shares during the years ended December 31, 2023 and 2022, respectively, under the 2013 ESPP. The 2013 ESPP provides participating employees
with  the  opportunity  to  purchase  up  to  an  aggregate  of  2,363,636  shares  of  our  common  stock.  As  of  December  31,  2023,  we  had  1,686,039  shares
available for future issuance under the 2013 ESPP.

Stock-based compensation expense

During  the  years  ended  December  31,  2023,  2022  and  2021,  we  recorded  stock-based  compensation  expense  for  employee  and  non-employee  stock
options, RSUs, PSUs, and ESPP shares. Stock-based compensation expense by award type included within the consolidated statements of operations is as
follows:

(In thousands)
Stock options
Restricted stock units
Performance-based stock units
Employee Stock Purchase Plan
Total stock-based compensation expense

2023

2022

2021

$

$

17,163  $
19,367 
7,368 
868 
44,766  $

23,731  $
21,670 
2,919 
976 
49,296  $

Expenses related to equity-based awards were allocated as follows in the consolidated statements of operations:
(In thousands)
Research and development expense
Selling, general and administrative expense
Total stock-based compensation expense

17,064  $
27,702 
44,766  $

2023

$

$

2022

2021

20,988  $
28,308 
49,296  $

30,985 
21,510 
— 
1,013 
53,508 

24,527 
28,981 
53,508 

No related tax benefits were recognized for the years ended December 31, 2023, 2022 and 2021.

F-22

 
Table of Contents

The  fair  value  of  each  stock  option  granted  to  employees  and  non-employees  is  estimated  on  the  date  of  grant  using  the  Black-Scholes  option-pricing
model. The following table summarizes the weighted average assumptions used in calculating the grant date fair value of the awards:

Risk-free interest rate
Expected dividend yield
Expected term (in years)
Expected volatility

Expected term

2023

2022

2021

4.05 %
— 
5.99
54.26 %

2.55 %
— 
6.03
55.30 %

0.72 %
— 
6.05
61.72 %

We use the “simplified method” as prescribed by the Securities and Exchange Commission Staff Accounting Bulletin No. 107, Share Based Payments, to
estimate the expected term of stock option grants. Under this approach, the weighted-average expected life is presumed to be the average of the contractual
term of ten years and the weighted-average vesting term of the stock options, taking into consideration multiple vesting tranches. We utilize this method
due to the plain-vanilla nature of our share-based awards.

Volatility

The expected volatility has been determined using our historical volatilities for a period equal to the expected term of the option grant.

Risk-free rate

The risk-free rate is based on the yield curve of U.S. Treasury securities with periods commensurate with the expected term of the options being valued.

Dividends

We have never paid, and do not anticipate paying, any cash dividends in the foreseeable future, and, therefore, use an expected dividend yield of zero in the
option-pricing model.

Forfeitures

We account for forfeitures as they occur and, therefore, do not estimate forfeitures.

Note 10. Net Income (Loss) per Share

Basic  net  income  (loss)  per  share  is  calculated  by  dividing  net  income  (loss)  by  the  weighted-average  shares  outstanding  during  the  period,  without
consideration for common stock equivalents. Diluted net income (loss) per share is calculated by adjusting the weighted-average shares outstanding for the
dilutive effect of common stock equivalents outstanding for the period, determined using the treasury stock method. For purposes of the dilutive net income
(loss)  per  share  calculation,  stock  options,  RSUs,  PSUs  and  MSUs  for  which  the  performance  and  market  vesting  conditions,  respectively,  have  been
deemed probable, and 2013 ESPP shares are considered to be common stock equivalents, while PSUs and MSUs with performance and market vesting
conditions, respectively, that were not deemed probable as of December 31, 2023 are not considered to be common stock equivalents.

We  utilize  the  control  number  concept  in  the  computation  of  diluted  earnings  per  share  to  determine  whether  potential  common  stock  equivalents  are
dilutive. The control number used is net loss from continuing operations. The control number concept requires that the same number of potentially dilutive
securities applied in computing diluted earnings per share from continuing operations be applied to all other categories of income or loss, regardless of their
anti-dilutive effect on such categories. Since we had a net loss from continuing operations for all periods presented, no dilutive effect has been recognized
in the calculation of income (loss) from discontinued operations per share or net income (loss) per share. Basic and diluted net income (loss) per share was
the same for all periods presented.

F-23

Table of Contents

The following common stock equivalents were excluded from the calculation of diluted net loss per share applicable to common stockholders for the
periods indicated because including them would have had an anti-dilutive effect:

Stock options
Restricted stock units
Performance-based stock units
Employee Stock Purchase Plan shares
Total

Note 11. Income Taxes

Years ended December 31,

2023

2022

2021

5,263,681 
1,346,701 
145,023 
48,713 
6,804,118 

5,772,564 
1,117,921 
— 
42,026 
6,932,511 

4,798,826 
1,002,924 
— 
39,864 
5,841,614 

The domestic and foreign components of loss from continuing operations before income taxes are as follows:
(In thousands)
Domestic
Foreign
Total

2023

$

$

(3)

(352,088) $

(352,085) $

2022

2021

(231,767) $
(34)
(231,801) $

(356,665)
155 
(356,510)

We did not have any provision for income taxes for the years ended December 31, 2023, 2022 and 2021.

A reconciliation of the expected income tax benefit (expense) computed using the federal statutory income tax rate to our effective income tax rate is as
follows for the years ended December 31, 2023, 2022 and 2021:

Income tax benefit computed at federal statutory tax rate
State taxes, net of federal benefit
Change in valuation allowance
General business credits and other credits
Permanent differences and other adjustments
Stock based compensation
Total

2023

2022

2021

21.0 %
1.9 %
(23.8)%
4.2 %
(2.8)%
(0.5)%
— %

21.0 %
2.9 %
(25.7)%
5.2 %
(2.3)%
(1.1)%
— %

21.0 %
2.6 %
(24.5)%
5.3 %
(3.9)%
(0.5)%
— %

F-24

Table of Contents

Deferred  income  taxes  reflect  the  net  tax  effects  of  temporary  differences  between  the  carrying  amount  of  assets  and  liabilities  for  financial  reporting
purposes and the amounts used for income tax purposes. Significant components of our deferred tax assets and liabilities for the years ended December 31,
2023 and 2022 are as follows:

(In thousands)
Deferred tax assets:

Net operating loss carryforwards
Tax credit carryforwards
Purchased intangible assets
Stock-based compensation
Operating lease liability
Non-deductible accruals and reserves, including inventory
Section 174 R&D expense

Total deferred tax assets
Depreciation and amortization
Operating lease right of use asset
Less: valuation allowance
Net deferred taxes

2023

2022

64,066  $
180,635 
14,155 
20,954 
16,780 
5,134 
93,333 
395,057 
(1,986)
(13,411)
(379,660)

—  $

32,907 
163,780 
11,583 
26,236 
21,042 
3,992 
56,565 
316,105 
(3,767)
(16,345)
(295,993)
— 

$

$

The  Tax  Cuts  and  Jobs  Act  (TCJA)  requires  taxpayers  to  capitalize  and  amortize  research  and  experimental  expenditures  under  Internal  Revenue  Code
section  174  for  tax  years  beginning  after  December  31,  2021.  The  Company  capitalized  research  and  experimental  costs  of  $232.7  million  and  $261.4
million for the years ended December 31, 2023 and December 31, 2022, respectively. We will amortize these costs for tax purposes over 5 years if the
research and experimentation was performed in the U.S. and over 15 years if the research and experimentation was performed outside the U.S.

As of December 31, 2023, we had net operating loss carryforwards, or NOLs, available to reduce federal, state and foreign income taxes of approximately
$131.7  million,  $502.4  million  and  $65.2  million,  respectively.  At  December  31,  2023,  we  also  had  available  research  and  development  tax  credits  for
federal and state income tax purposes of approximately $25.5 million and $28.1 million, respectively. If not utilized, the credits begin to expire in 2039 and
2027 for federal and state income tax purposes, respectively. We engaged in clinical testing activities and incurred expenses that qualify for the federal
orphan drug tax credit. At December 31, 2023, we had available orphan drug tax credits for federal purposes only of approximately $132.9 million. If not
utilized, the orphan drug credits begin to expire in 2035.

As  provided  by  Section  382  of  the  Internal  Revenue  Code  of  1986,  or  Section  382,  and  similar  state  provisions,  utilization  of  NOLs  and  tax  credit
carryforwards may be subject to substantial annual limitations due to ownership change limitations that have previously occurred or that could occur in the
future. Ownership changes may limit the amount of NOLs and tax credit carryforwards that can be utilized annually to offset future taxable income and tax,
respectively. In general, an ownership change, as defined by Section 382, results from transactions that increase the ownership of five percent stockholders
in the stock of a corporation by more than 50 percent in the aggregate over a three year period. We completed a review of our changes in ownership through
December  31,  2023  and  determined  that  transactions  have  resulted  in  no  ownership  changes  during  the  year  ended  December  31,  2023,  as  defined  by
Section 382. The impact of the historical ownership changes has been reflected in our deferred tax assets in the table above.

As  required  by  ASC  740,  we  have  evaluated  the  positive  and  negative  evidence  bearing  upon  the  realizability  of  our  deferred  tax  assets.  Based  on  the
weight of available evidence, both positive and negative, we recorded a valuation allowance of $379.7 million and $296.0 million as of December 31, 2023
and December 31, 2022, respectively, because we have determined that it is more likely than not that these assets will not be fully realized. The valuation
allowance increased by $83.7 million for the year ended December 31, 2023 and by $59.5 million for the year ended December 31, 2022 primarily due to
the Section 174 R&D expense capitalization.

F-25

Table of Contents

The following table presents our change in valuation allowance for the years ended December 31, 2023 and, 2022:
(In thousands)

Valuation allowance at the beginning of the year
Increase (decrease) for the current period
Valuation allowance at the end of the year

$

$

2023

2022

295,993  $
83,667 
379,660  $

236,478 
59,515 
295,993 

As of December 31, 2023, the unremitted earnings of our foreign subsidiaries are not material. We have not provided for U.S. income taxes or foreign
withholding taxes on these earnings as it is our current intention to permanently reinvest these earnings outside the U.S. The tax liability on these earnings
is also not material. Events that could trigger a tax liability include, but are not limited to, distributions, reorganizations or restructurings and/or tax law
changes.

We  apply  the  accounting  guidance  in  ASC  740  related  to  accounting  for  uncertainty  in  income  taxes.  Our  reserves  related  to  taxes  are  based  on  a
determination  of  whether,  and  how  much  of,  a  tax  benefit  taken  by  us  in  our  tax  filings  or  positions  is  more  likely  than  not  to  be  realized  following
resolution of any potential contingencies present related to the tax benefit.

The following table presents our unrecognized tax benefits activity for the years ended December 31, 2023 and 2022:

(In thousands)
Unrecognized tax benefits at the beginning of the year
Gross increases - current period tax positions
Unrecognized tax benefits at the end of the year

2023

2022

$

$

26,190  $
2,388 
28,578  $

24,220 
1,970 
26,190 

We will recognize interest and penalties related to uncertain tax positions above the line as an expense to continuing operations. As of December 31, 2023
and 2022, we had no accrued interest or penalties related to uncertain tax positions and no such amounts have been recognized. If all of the Company’s
unrecognized tax benefits as of December 31, 2023 were to become recognizable in the future, we would record $28.6 million of unrecognized tax benefits.
The uncertain tax position does not impact our effective income tax rate due to the full valuation allowance.

We are subject to taxation in the United States, Switzerland, Netherlands, Germany, Italy and France. The statute of limitations for assessment by the IRS
and state tax authorities is open for tax years ending December 31, 2023, 2022, 2021, and 2020, although carryforward attributes that were generated for
tax years prior to 2020 may still be adjusted upon examination by the IRS or state tax authorities if they either have been, or will be, used in a future period.
The  statute  of  limitations  for  assessment  in  Switzerland  remains  open  for  tax  years  ending  December  31,  2023,  2022,  2021,  2020  and  2019.  The
Company’s  subsidiaries  in  the  Netherlands  and  Germany  were  incorporated  in  2019  and  have  statute  of  limitations  for  5  and  4  years,  respectively,  for
assessment.  The  tax  years  that  remain  open  in  these  jurisdictions  are  for  the  tax  years  ending  December  31,  2023,  2022,  2021,  2020  and  2019.  The
Company’s subsidiaries in Italy and France were incorporated in 2020 and have statute of limitations for 5 and 3 years, respectively, for assessment. The
tax years that remain open in these jurisdictions are for the tax years ending December 31, 2023, 2022, 2021 and 2020. There are currently no federal, state
or foreign audits in progress.

As of December 31, 2023 and 2022, we had an income tax receivable of $1.1 million and $0.3 million, respectively, recorded within prepaid expenses and
other current assets.

F-26

Table of Contents

Note 12. Property and Equipment, net

Property and equipment, net consisted of the following at December 31:
(In thousands)
Laboratory equipment
Computer equipment and software
Leasehold improvements
Furniture and fixtures
Office equipment
Construction in progress
Total property and equipment
Less: accumulated depreciation
Total property and equipment, net

2023

2022

17,433  $
6,566 
37,277 
3,459 
2,268 
608 
67,611 
(52,229)
15,382  $

23,182 
6,179 
37,277 
3,514 
2,248 
657 
73,057 
(50,070)
22,987 

$

$

Depreciation expense for the years ended December 31, 2023, 2022 and 2021 was $6.6 million, $8.4 million and $8.8 million, respectively.

Note 13. Common Stock

We are authorized to issue 125,000,000 shares of our common stock. Holders of common stock are entitled to one vote per share. Additionally, holders of
common  stock  are  entitled  to  receive  dividends,  if  and  when  declared  by  our  board  of  directors,  and  to  share  ratably  in  our  assets  legally  available  for
distribution to our shareholders in the event of liquidation.

Note 14. Share Repurchase Program

On March 25, 2021, we announced that our board of directors authorized a repurchase program, or the Repurchase Program, for the repurchase of up to
$1.2 billion of our outstanding shares of common stock. On March 31, 2021, in connection with the Repurchase Program, we entered into a definitive share
repurchase agreement with BMS to repurchase 7.1 million shares of our common stock held by certain subsidiaries of BMS for an aggregate purchase price
of $344.5 million, or $48.38 per share. This repurchase was completed on April 5, 2021.

Further, on April 2, 2021, in connection with the Repurchase Program, we entered into a Rule 10b5-1 repurchase plan to which we may repurchase up to
$600.0 million of shares of our common stock. As of December 31, 2023, we repurchased approximately 9.1 million shares of common stock for $458.0
million, or $50.35 per share, under the Rule 10b5-1 repurchase plan. In total, as of December 31, 2023, we repurchased 16.2 million shares of common
stock for $802.5 million, or $49.49 per share, under the Repurchase Program. No common stock was purchased during the years ended December 31, 2023
or December 31, 2022.

On October 5, 2021, we terminated our Rule 10b5-1 share repurchase plan and on October 13, 2021, we entered into a Rule 10b-18 repurchase plan that
allows  us  to  conduct  open  market  repurchases  over  time  up  to  our  remaining  authorization  under  the  Repurchase  Program.  We  have  paused  our  share
repurchases for the foreseeable future.

Repurchased shares are held as treasury stock until they are retired or re-issued. Treasury stock purchases are accounted for under the cost method whereby
the entire cost of the acquired stock is recorded as treasury stock. Repurchases of our common stock are accounted for as of the settlement date. There were
no retirements or re-issuances of treasury stock during the year ended December 31, 2023.

Note 15. Discontinued Operations

On March 31, 2021, we completed the sale of our oncology business to Servier. We determined the sale of the oncology business represented a strategic
shift that had a major effect on our business and therefore met the criteria for classification as discontinued operations at March 31, 2021. Accordingly, the
oncology business was reported as discontinued operations in accordance with ASC 205-20, Discontinued Operations. The results of operations from the
oncology business were classified as discontinued operations in the consolidated statements of operations. We recognized a gain on the sale of the oncology
business upon closing.

F-27

Table of Contents

The following table presents the gain on the sale for the year ended December 31, 2021: 
(in thousands)
Cash proceeds
Less: transaction and insurance costs
Plus: net liabilities distributed, including working capital adjustment
Gain on sale, pre-tax
Income tax expense
Gain on sale, net of tax

As of December 31, 2023 and December 31, 2022, there were no assets or liabilities classified as discontinued operations.

The following table presents the financial results of the discontinued operations: 
(in thousands)
Revenues:

Product revenue, net
Collaboration revenue – related party
Collaboration revenue – other
Royalty revenue – related party

Total revenue

Cost and expenses:

Cost of sales
Research and development
Selling, general and administrative
Total cost and expenses
(Loss) income from discontinued operations

Non-cash interest expense for the sale of future revenue
Gain on the sale of the oncology business

Income from discontinued operations, pre-tax

Income tax expense

Net income from discontinued operations

December 31, 2021

1,802,936 
(53,573)
239,770 
1,989,133 
(12,799)
1,976,334 

2021

36,909 
1,350 
491 
2,659 
41,409 

706 
41,564 
8,551 
50,821 
(9,412)
(5,697)
1,989,133 
1,974,024 
(12,799)
1,961,225 

$

$

$

$

In  accordance  with  ASC  205-20,  only  expenses  specifically  identifiable  and  related  to  a  business  to  be  disposed  may  be  presented  in  discontinued
operations. As such, the research and development, marketing, selling and general and administrative expenses in discontinued operations include corporate
costs incurred directly to solely support our oncology business.

We  also  entered  into  a  Transition  Services  Agreement  with  Servier,  through  which  we  provided  transitional  services  related  to  discovery,  clinical
development, technical operations, commercial and general and administrative related activities through March 31, 2022.

The  milestone  payment  for  approval  of  vorasidenib  and  royalty  payments  related  to  vorasidenib  and  TIBSOVO®  represent  contingent  consideration.
Contingent consideration has been accounted for as a gain contingency in accordance with ASC 450, Contingencies, and will be recognized in earnings in
the period when realizable. As described in Note 1, Nature of Business, on October 27, 2022, we sold our rights to future contingent payments related to
TIBSOVO® royalties to entities affiliated with Sagard and recognized income of $127.9 million within the gain on sale of contingent payments line item in
our consolidated statements of operations for the year ended December 31, 2022.

F-28

Note 16. Commitments and Contingent Liabilities

Manufacturing Commitments

We are party to various agreements with contract manufacturing organizations that we are not contractually able to terminate for convenience and avoid
any and all future obligations to the vendors. Under such agreements, we are obligated to make certain minimum payments, with the exact amounts in the
event of termination to be based on the timing of the termination and the exact terms of the agreement.

Legal Contingencies

From time to time, we may be involved in disputes and legal proceedings in the ordinary course of business. These proceedings may include allegations of
infringement of intellectual property, employment or other matters. We do not have any ongoing legal proceedings that, based on our estimates, could have
a material effect on our consolidated financial statements.

Note 17. Defined Contribution Benefit Plan

We  sponsor  a  401(k)  retirement  plan,  in  which  substantially  all  of  our  full-time  employees  are  eligible  to  participate.  Participants  may  contribute  a
percentage  of  their  annual  compensation  to  this  plan,  subject  to  statutory  limitations.  We  will  make  matching  contributions  equal  to  100%  of  the
employee’s contributions, subject to a maximum of 4% of eligible compensation.

F-29

Ex. 10.21

        THIS  SUBLEASE  AGREEMENT  (the  “Sublease”)  is  made  as  of  the  14th  day  of  April,  2023,  by  and  between  Agios
Pharmaceuticals,  Inc.,  a  Delaware  corporation  (“Sublandlord”)  and  Watershed  Informatics,  Inc.,  a  Delaware  corporation
(“Subtenant”).

SUBLEASE AGREEMENT

RECITALS:

    WHEREAS, BRE-BMR 64 SIDNEY LLC, a Delaware limited liability company (“Landlord”), successor in interest to Up  64
Sidney  Street,  LLC,  a  Delaware  limited  liability  company,  as  landlord,  and  Sublandlord,  as  tenant,  are  parties  to  the  Lease
dated November 17, 2017 (the “Original Lease”), as amended by the First Amendment of Lease dated April 11, 2018 (the “First
Amendment”),  as  further  amended  by  the  Second  Amendment  to  Lease  dated  as  of  December  14,  2018  (the  “Second
Amendment”), and as further amended by the Third Amendment to Lease dated as of April 11, 2019 (the “Third Amendment”,
and  collectively  with  the  Original  Lease,  the  First  Amendment  and  the  Second  Amendment,  the  “Prime Lease”),  pursuant  to
which Landlord leased to Sublandlord certain premises including approximately 7,407 rentable square feet of office space (the
“Subleased  Premises”)  on  the  first  (1 )  floor  of  the  building  more  commonly  known  as  64  Sidney  Street,  Cambridge,
Massachusetts (the “Building”), and as further described on Exhibit A attached hereto. A redacted copy of the Prime Lease is
attached hereto as Exhibit E and is incorporated herein by reference; and

st

        WHEREAS,  Sublandlord  desires  to  sublease  to  Subtenant  and  Subtenant  desires  to  sublease  from  Sublandlord  the
Subleased Premises in accordance with the provisions of this Sublease.

    NOW THEREFORE, in consideration of the premises, the rents, and the mutual covenants herein contained, and other good
and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties, intending to be legally
bound, agree as follows:

1.

Sublease of Subleased Premises. Sublandlord does hereby sublease to Subtenant, and Subtenant does hereby
sublease  from  Sublandlord,  for  the  Term  (as  hereinafter  defined)  and  upon  the  conditions  hereafter  provided,  the  Subleased
Premises.  The  Subleased  Premises  being  sublet  to  Subtenant  by  Sublandlord  under  this  Sublease  are  part  of  the  premises
being leased by Sublandlord from Landlord under the Prime Lease.

2.

Term.

a.    The Term of this Sublease shall commence on the later of, (i) the date of full execution of this Sublease and
receipt  of  Landlord’s  written  consent  to  this  Sublease  as  provided  in  Section  27  herein,  and  (ii)  Sublandlord’s  delivery  to
Subtenant  of  exclusive  possession  of  the  Subleased  Premises  in  the  condition  required  herein  (such  later  date,  the
“Commencement Date”), and shall expire, absolutely and without the need for notice from either party to the other, on that date
which is two (2) years after the Commencement Date, unless the Commencement Date does not occur on the 1  calendar day
of a calendar month, in which case the Term shall end on the date which is two (2) years following the last day of the calendar
month in which the Commencement Date occurs (the “Term”), unless otherwise terminated as hereinafter provided. Subtenant
shall have early access to the Subleased Premises commencing on the date that is thirty (30) days prior to the Target Date, free
of charge, for the purpose of setting up and installing its furniture, fixtures and equipment in the Subleased Premises.

st

b.    The parties have targeted May 1, 2023 (the “Target Date”) as the anticipated Commencement Date. In the
event the Commencement Date has not occurred by the date (the “Outside Date”) that is thirty (30) days after the Target Date,
then at any time thereafter so long as the Commencement Date has not occurred, Subtenant and Sublandlord shall each have
the right to terminate this Sublease by written notice, in which event this

Sublease shall thereupon terminate and Sublandlord shall refund to Subtenant any rent paid in advance hereunder together with
Subtenant’s security deposit, unless Landlord’s consent shall have been obtained within ten (10) days after receipt of notice of
termination, in which case this Sublease shall not terminate.

3.

Rent.

        a.    Beginning on the Commencement Date (the “Rent Commencement Date”), Subtenant shall pay to Sublandlord, in
lawful  money  of  the  United  States,  base  annual  rent  (the  “Base Rent”)  during  the  first  year  of  the  Term  in  the  amount  of  Six
Hundred  Seven  Thousand  Three  Hundred  Seventy  Four  and  00/100  Dollars  ($607,374.00),  payable  in  equal  monthly
installments of Fifty Thousand Six Hundred Fourteen and 50/100 ($50,614.50) which are payable on or before the first (1 ) day
of  each  calendar  month  during  the  Term,  without  notice  or  demand  and  without  abatement,  set-off  or  deduction  (except  that
Subtenant  shall  pay  the  first  monthly  installment  on  the  execution  hereof),  which  Base  Rent  shall  be  adjusted  on  each
anniversary of the Commencement Date (unless the Commencement Date is other than the first day of a month, in which event
the Base Rent shall be adjusted on the anniversary of the first day of the calendar month following the Commencement Date) as
follows:

st

    Period        Base Annual Rent         Base Monthly Rent

    Year 1            $ 607,374.00            $ 50,614.50
    Year 2            $ 625,595.22            $ 52,132.94

b.        Subtenant  shall  also  pay  any  and  all  charges,  fees  or  expenses  payable  under  the  Prime  Lease  that  are
attributable  or  arises  out  of  the  Subtenant’s  use  or  occupancy  of  the  Subleased  Premises  as  follows:  (i)  Subtenant’s
Proportionate Share (as hereinafter defined) of the increase in Real Estate Taxes (as such term is defined in Section 3.2(d) of
the  Prime  Lease)  incurred  with  respect  to  the  current  year  over  and  above  the  amount  of  Real  Estate  Taxes  incurred  with
respect to the Base Year (as hereinafter defined); (ii) Subtenant’s Proportionate Share of the increase in Operating Expenses
(as  such  term  is  defined  in  Section  3.3(b)  of  the  Prime  Lease)  incurred  with  respect  to  the  current  year  over  and  above  the
amount  of  Operating  Expenses  incurred  with  respect  to  the  Base  Year;  (iii)  any  additional  rent  payable  on  account  of
Subtenant’s  use  of  excess  heating,  ventilation  and  air  conditioning  and  electricity,  but  in  no  event  shall  Subtenant  use  more
electricity in the Subleased Premises than that which the feeders, risers, panels and other electricity supply equipment serving
the Subleased Premises are capable of safely supplying; (iv) amounts payable to Landlord or Sublandlord for separately sub-
metered utilities and services pursuant to Section 3.4 of the Prime Lease; and (v) any additional rent payable on account of any
services provided by Landlord or Sublandlord to Subtenant or otherwise attributable to or arising out of the use or occupancy of
the Subleased Premises (collectively, “Additional Rent”). Subtenant agrees to pay the Additional Rent within thirty (30) days of
invoice  therefor.  “Subtenant’s  Proportionate  Share”  shall  mean  forty-seven  and  29/100  (47.29%)  percent  of  the  Operating
Expenses and Real Estate Taxes related to the 1  floor portion of Sublandlord’s Premises, which is calculated by dividing the
square footage of the Subleased Premises (7,407 sq. ft.) by the square footage of the 1  floor portion of Sublandlord’s Premises
(15,663  sq.  ft.)  “Base  Year”  shall  mean  calendar  year  2023  with  respect  to  Operating  Expenses,  and  fiscal  year  2024  with
respect to Real Estate Taxes.

st

st

c.    Sublandlord shall provide to Subtenant copies of any Operating Expenses budget for the Building, Premises
and Subleased Premises that Sublandlord receives from Landlord within thirty (30) days of receipt. Payments by the Subtenant
for  Subtenant’s  Proportionate  Share  of  the  Operating  Expenses  and  Real  Estate  Taxes  for  the  Subleased  Premises  shall  be
made  in  monthly  installments  of  one-twelfth  (1/12 )  of  Subtenant’s  Proportionate  Share  of  the  Operating  Expenses  and  Real
Estate  Taxes  as  further  described  in  Article  3  of  the  Prime  Lease.  The  amount  so  to  be  paid  to  the  Sublandlord  shall  be  an
amount from time to time reasonably estimated by the Sublandlord to be sufficient to aggregate a sum equal to the Subtenant’s
Proportionate  Share  of  the  Operating  Expenses  and  Real  Estate  Taxes  for  the  Subleased  Premises  for  each  calendar  year.
Following the end of each calendar year, as

th

2

soon  as  practically  possible  after  receipt  of  a  statement  from  Landlord  in  accordance  with  Article  3  of  the  Prime  Lease,
Sublandlord shall provide a statement to Subtenant for the previous calendar year. If at the time such statement is rendered it is
determined with respect to the previous calendar year, that the Subtenant has paid (i) less than the Subtenant’s Proportionate
Share of the Operating Expenses and Real Estate Taxes, or (ii) more than the Subtenant’s Proportionate Share of the Operating
Expenses  and  Real  Estate  Taxes,  then,  in  the  case  of  (i),  the  Subtenant  shall  pay  to  the  Landlord,  as  Additional  Rent,  within
thirty  (30)  days  of  such  statement  the  amounts  of  such  underpayment  or,  in  the  case  of  (ii),  the  Sublandlord  shall  credit  the
amount  of  such  overpayment  against  the  monthly  installments  of  the  Subtenant’s  Proportionate  Share  of  the  Operating
Expenses and Real Estate Taxes next thereafter coming due (or refund such overpayment within thirty (30) days if the Term has
expired and the Subtenant has no further obligation to the Sublandlord).

d.    During the Term, the Subtenant shall pay directly to the provider charges for all separately metered utilities
serving the Subleased Premises (if any), and shall pay to Sublandlord as Additional Rent Subtenant’s Proportionate Share of
water, sewer and other services and utilities.

Proportionate Share of any janitorial costs related to the Subleased Premises.

e.        Notwithstanding  anything  to  the  contrary  above,  Subtenant  shall  reimburse  Sublandlord  for  Subtenant’s

4.

Extension Option. On the conditions (which conditions Sublandlord may waive in its sole discretion by notice to
Tenant)  that,  both  at  the  time  Subtenant  exercises  an  Extension  Option  (as  defined  below)  or  at  any  time  thereafter  until  the
commencement of the corresponding Extension Term (as defined below), (i) there exists no event of default (beyond applicable
notice  and  cure  periods)  hereunder,  both  (1)  as  of  the  date  of  the  Extension  Notice  (hereinafter  defined),  and  (2)  at  the
commencement of the applicable Extension Term (hereinafter defined), and (ii) this Sublease is still in full force and effect and
Subtenant is in actual occupancy of the entire Subleased Premises and has not assigned its interest in this Sublease nor sublet
more  than  thirty  percent  (30%)  of  the  Subleased  Premises  to  anyone  other  than  an  affiliated  entity  and/or  a  successor  of
Subtenant,  Subtenant  may  extend  the  term  of  the  Sublease  for  one  (1)  initial  extension  term  of  one  (1)  year  (the  “Initial
Extension  Option”),  followed  by  one  (1)  additional  extension  term  through  the  expiration  of  the  Prime  Lease,  which  date  is
February 28, 2028 (the “Second Extension Option”, and collectively with the Initial Extension Option, the “Extension Option”),
by  delivering  written  notice  of  its  exercise  of  the  Extension  Option  no  later  than  nine  (9)  months  prior  to  the  expiration  of  the
applicable Term (the “Extension Notice”). The initial extension term along with the second extension term shall be collectively
referred to herein as the “Extension Term”. The Base Rent for each year of such Extension Term shall continue to increase by
three (3%) annually (on each anniversary of the Commencement Date) through the Extension Term.

5.

Condition of Subleased Premises. Sublandlord  shall  deliver  the  Subleased  Premises  to  Subtenant  in  its  “as  is,
where  is”  broom-clean  condition  and  “with  all  faults”  provided  that  the  Subleased  Premises  shall  be  demised  and  with  all
required base building systems, including, but not limited to, HVAC, electrical, life safety and plumbing systems in good working
condition.  Sublandlord  shall  be  responsible  for  maintaining  all  base  building  systems,  including,  but  not  limited  to,  HVAC,
electrical,  life  safety  and  plumbing  systems.  Subtenant’s  taking  possession  of  the  Subleased  Premises  shall  be  conclusive
evidence as against Subtenant that the Subleased Premises were in good order and satisfactory condition when Subtenant took
possession. No promise of Sublandlord to alter, remodel or improve the Subleased Premises and no representation respecting
the  condition  of  the  Subleased  Premises  or  the  Building  have  been  made  to  Subtenant.  Additionally,  throughout  the  Term,
Subtenant shall have the right to use, free of charge, the existing office furniture and IT and audiovisual equipment, as well as
monitors and wiring and cabling in the Subleased Premises; such existing furniture is listed herein in Exhibit B. Subtenant shall
have no obligations for the removal of the existing furniture and equipment at the end of the Term. Subtenant shall have the right
to remove furniture and IT

3

and audiovisual equipment during the Term but shall be obligated to replace such furniture and IT and audiovisual equipment
that has been removed at the end of the Term.

6.

Use.  Subtenant  will  use  and  occupy  the  Subleased  Premises  solely  for  general  business  and  administrative
offices  and  customary  accessory  uses  supporting  the  foregoing.  Subtenant  has  inspected  the  Subleased  Premises  and  will
accept the Subleased Premises in its condition existing on the date Subtenant takes occupancy of the Subleased Premises.

7.

Security  Deposit.  Simultaneously  with  the  execution  of  this  Sublease  by  Subtenant,  Subtenant  shall  deliver  to
Sublandlord, and that Sublandlord shall hold the same throughout the Term of this Sublease as security for the performance by
Subtenant of all obligations on the part of Subtenant hereunder, a security deposit in the amount of $101,229.00. Sublandlord
shall have the right from time to time, without prejudice to any other remedy Sublandlord may have on account thereof, to apply
such deposit, or any part thereof, to Sublandlord damages arising from, or to cure, any default by Subtenant. If Sublandlord shall
so apply any or all of such deposit, Subtenant shall immediately upon demand deposit with Sublandlord the amount so applied
to be held as security hereunder. Sublandlord shall return the deposit, or so much thereof as shall not have theretofore been
applied in accordance with the terms of this Section 7, to Subtenant on the expiration or earlier termination of the Term of this
Sublease and surrender of possession of the Subleased Premises by Subtenant to Sublandlord at such time, provided that there
is then existing no default of Subtenant (nor any circumstance which, with the passage of time or the giving of notice, or both,
would  constitute  a  default  of  Subtenant).  While  Sublandlord  holds  such  deposit,  Sublandlord  shall  have  no  obligation  to  pay
interest on the same and shall have the right to commingle the same with Sublandlord’s other funds.

8.

Default Under and/or Termination of the Prime Lease.

a.        If  for  any  reason  the  term  of  the  Prime  Lease  is  terminated  prior  to  the  anticipated  expiration  date  of  this
Sublease, this Sublease shall thereupon terminate without further notice and without further obligation or liability on the part of
the parties; provided, however, that if the Prime Lease terminates as a result of a default or breach by Sublandlord or Subtenant
under this Sublease and/or the Prime Lease, then the defaulting party shall be liable to the non-defaulting party for the actual
and  direct  damage  (specifically  excluding  consequential,  punitive  and  other  similar  damages)  suffered  as  a  result  of  such
termination or forfeiture, except that Sublandlord shall not be so liable to Subtenant for a default or breach by Sublandlord under
the Prime Lease resulting from any act or omission of Subtenant, and Sublandlord shall return to Subtenant the security deposit
as well as rent paid in advance by Subtenant, if any, prorated as of the date of the termination of the Prime Lease.

        b.    From and after the date of any default by Sublandlord resulting in a termination, reentry or dispossession under the
Prime  Lease,  until  the  date  that  this  Sublease  is  terminated  in  accordance  with  this  Section  8,  Subtenant  shall  pay  all  Base
Rent,  Additional  Rent  and  any  other  sums  due  by  Subtenant  under  the  Sublease  directly  to  Landlord  and  Subtenant  shall
continue to perform all of its obligations hereunder.

9.

Notice of Default. Sublandlord hereby agrees to provide to Subtenant, within five (5) business days after receipt
thereof, a copy of any notice of default under the Prime Lease which Sublandlord receives from Landlord. Subtenant shall have
the option, but not the obligation, of curing any monetary default which is not being contested by Sublandlord by forwarding to
Sublandlord sufficient funds to cure such default. Sublandlord hereby agrees to immediately remit such sums to Landlord.

10.

Subordination to and Incorporation of Terms of Prime Lease.

        a.    This Sublease is in all respects subject and subordinate to any mortgage, deed, deed of trust, ground lease or other
instrument now or hereafter encumbering the Building or the land on which it is located, to the terms and conditions of the Prime
Lease and to the

4

matters  to  which  the  Prime  Lease,  including  any  amendments  thereto,  is  or  shall  be  subordinate.  The  terms,  provisions,
covenants, stipulations, conditions, rights, obligations, remedies and agreements of the Prime Lease are incorporated into this
Sublease by reference and made a part hereof as if herein set forth at length, and shall, as between Sublandlord and Subtenant
(as if they were the landlord and the tenant, respectively, under the Prime Lease and as if the Subleased Premises were the
Premises demised under the Prime Lease), constitute the terms of this Sublease, except to the extent that they do not relate to
the  Subleased  Premises  or  are  inapplicable  to,  or  modified  or  eliminated  by,  the  terms  of  this  Sublease.  Sublandlord  and
Subtenant each agree to observe and be bound by each and every covenant, condition and provision of the Prime Lease insofar
as any such covenant, condition or provision affects the Subleased Premises or Subtenant’s use thereof. Notwithstanding  the
foregoing, or anything else to the contrary herein, the following provisions of the Prime Lease shall not be incorporated herein by
reference and are expressly excluded from the terms of this Sublease: Sections 2.3, 2.4, 2.5, 2.6, 2.7, 4.5, 12.8, 12.10, 12.13,
12.14  and  12.15  and  Exhibits  A  and  I  of  the  Original  Lease,  the  First  Amendment,  the  Second  Amendment  and  the  Third
Amendment; provided, however, that notwithstanding such non-incorporation, this Sublease remains subject and subordinate to
all of the foregoing provisions as provided above. Subtenant acknowledges that it has reviewed and is familiar with the Prime
Lease  (as  redacted).  In  confirmation  of  the  subordination  provided  for  in  this  paragraph,  Subtenant  shall,  at  Sublandlord’s
reasonable  request,  promptly  execute  any  reasonably  requested  or  appropriate  certificate  or  other  document  in  commercially
reasonable form.

        b.    To the extent that Sublandlord is entitled under the Prime Lease to any abatement of rent as a result of damage or
casualty to the Subleased Premises, then Subtenant shall have the right to a corresponding abatement of rent hereunder.

        c.     Subtenant hereby assumes and agrees to perform faithfully and be bound by, with respect to the Subleased Premises,
all  of  Sublandlord’s  obligations,  covenants,  agreements  and  liabilities  under  the  Prime  Lease  and  all  terms,  conditions,
provisions and restrictions contained in the Prime Lease except the following provisions of the Prime Lease:

(i)Section 2.6 – Extension Options;
(ii)Section 2.7 – Right of First Offer; and
(iii)Section 3.1 – Annual Fixed Rent.

The  reference  in  this  Sublease  to  any  particular  section  or  article  of  the  Prime  Lease  shall  not  in  any  way  be  deemed  or
construed  to  derogate  from  the  general  incorporation  by  reference  of  the  entire  Prime  Lease  (except  as  aforesaid)  into  this
Sublease.

        d.    Neither Sublandlord nor Subtenant shall do anything which could result in a default under the Prime Lease or permit
the Prime Lease to be cancelled or terminated.

        e.    It is expressly understood and agreed that Sublandlord does not assume and shall not have any of the obligations or
liabilities of Landlord under the Prime Lease and that Sublandlord is not making the representations or warranties, if any, made
by Landlord in the Prime Lease. With respect to work, services, repairs and restoration or the performance of other obligations
required  of  Landlord  under  the  Prime  Lease,  Sublandlord’s  sole  obligation  with  respect  thereto  shall  be  to  request  the  same,
upon  written  request  from  Subtenant,  and  to  use  reasonable  efforts  to  obtain  the  same  from  Landlord,  which  efforts  shall  not
require initiating any litigation. Sublandlord shall not be liable in damages, nor shall rent abate hereunder, for or on account of
any failure by Landlord to perform the obligations and duties imposed on it under the Prime Lease.

        f.    Whenever Subtenant desires to do any act or thing that requires the consent or approval of the Landlord pursuant to
the  Prime  Lease,  (i)  Subtenant  shall  not  do  such  act  or  thing  without  first  having  obtained  the  consent  or  approval  of  both
Landlord  and  Sublandlord  (and  Sublandlord’s  right  to  withhold  consent  or  approval  shall  be  independent  of  Landlord’s  right),
which consent of Sublandlord shall not be unreasonably withheld, conditioned

5

or delayed, and (ii) in no event shall Sublandlord be required to give its consent or approval prior to Landlord doing so, unless
required by Landlord.

11.

Signage.  Sublandlord,  at  its  sole  cost  and  expense,  shall  request  that  Landlord  provide  to  Subtenant  Building
standard signage on all tenant directories at the Building as well as at the entrance to the Subleased Premises. All signage to be
installed at the Subleased Premises shall be subject to the approval of Landlord and subject to the terms of the Prime Lease.
Subtenant shall not have any right to exterior Building signage.

12.

Building Rules and Regulations. Subtenant shall comply with all rules and regulations of the Building.

13.

Alterations. Notwithstanding anything to the contrary contained in the Prime Lease, Subtenant shall not make any
improvements,  alterations  or  changes  to  the  Subleased  Premises  whatsoever,  including  without  limitation,  structural  or  non-
structural  changes,  without  the  prior  written  consent  of  Sublandlord  (which  consent  of  Sublandlord  shall  not  be  unreasonably
withheld, conditioned or delayed) and Landlord and in accordance with the terms of the Prime Lease. Subtenant will not suffer or
permit to attach nor will it do any act or make any contract that may create the foundation of any mechanic’s or other lien for
work, labor, services or materials, or otherwise, and whenever any such lien shall be filed or shall attach Subtenant will, within
ten  (10)  days  thereafter,  secure  a  cancellation  thereof  by  paying  the  same  or  in  such  other  manner  prescribed  by  law.
Notwithstanding  anything  to  the  contrary  herein,  Subtenant  shall  have  access  to  the  existing  tel/data  closet  and  card  reader
systems  located  within  the  Subleased  Premises  for  the  purpose  of  installing,  maintaining  and/or  repairing  its  own  phone,  IT,
security  and  alarm  systems  at  Subtenant’s  sole  expense,  subject  to  written  consent  of  Sublandlord  (which  consent  of
Sublandlord shall not be unreasonably withheld, conditioned or delayed) and Landlord and in accordance with the terms of the
Prime Lease.

14.

Insurance.  Subtenant  shall  maintain  insurance  of  the  kinds  and  in  the  amounts  required  to  be  maintained  by
Sublandlord under the Prime Lease and in accordance with all other requirements therein. All policies of liability insurance shall
name as additional insureds the Landlord and Sublandlord and their respective officers, directors or partners, as the case may
be, and the respective agents and employees of each of them. Subtenant shall deliver certificates evidencing such insurance
with delivery of the first month’s rent. Before taking occupancy of the Subleased Premises, Subtenant shall provide Sublandlord
with proof of such insurance.

15.

Assignment and Further Sublease. Provided that both on the date on which Subtenant notifies Sublandlord of its
desire  to  enter  into  an  assignment  and  on  the  date  on  which  such  assignment  is  to  take  effect,  Subtenant  is  not  in  default
(beyond applicable notice and cure periods) of any of its obligations hereunder, during the term of the Sublease, Subtenant shall
have the right to sub-sublease all or portion of the Subleased Premises subject to (i) Sublandlord’s written consent, which shall
not be unreasonably withheld or delayed, (ii) Landlord’s written consent, which shall be subject to and in accordance with the
Prime Lease (including the right to terminate the Lease, and, accordingly the Sublease), and (iii) payment of any fee which is
required in accordance with the Prime Lease. Subtenant  will  remain  liable  for  all  obligations  under  the  Sublease.  Assignment
rights shall be pursuant the Prime Lease. Subtenant shall provide such financial and other information regarding the proposed
assignee  as  reasonably  requested  by  Sublandlord  and/or  Landlord  in  accordance  with  the  Prime  Lease.  In  the  event  that
Sublandlord and Landlord consent to any assignment or sublease of the Subleased Premises, as a condition of such consent,
Subtenant  shall  pay  to  Sublandlord  fifty  percent  (50%)  of  any  rent,  sum  or  other  consideration  to  be  paid  or  given  for  such
assignment  or  sublet  (after  first  deducting  Subtenant’s  reasonable  actual  costs  to  sub  sublet  the  Subleased  Premises),  either
initially or over time, in excess of Base Rent and Additional Rent hereunder, as if such amount were originally called for by the
terms of this Sublease as Additional Rent. Subtenant shall furnish Sublandlord with a sworn statement, certified by an officer of
Subtenant,  setting  forth  in  detail  the  computation  of  any  such  excess  rent  (which  computation  shall  be  based  upon  generally
accepted accounting principles, including an amortization of Subtenant’s

6

actual costs in such assignment or sublease (e.g., the cost of commissions, improvement allowance and any other reasonable
actual  out-of-pocket  transaction  cost)),  and  Sublandlord,  or  its  representatives,  shall  have  access  to  the  books,  records  and
papers of Subtenant in relation thereto, and to make copies thereof.

16.

Access. Subtenant shall be afforded access to the Subleased Premises 24 hours a day, 7 days a week, and 365
days a year, and on all dates and at all times permitted by applicable government rules and regulations, and in accordance with
the terms of the Prime Lease, excluding emergency events, which may cause the Building to limit access to tenants.

17.

Surrender. Upon expiration of the Term or other termination of this Sublease, Subtenant shall quit and surrender
to Sublandlord the Subleased Premises and remove all of its furniture, furnishings, personal property and equipment in order to
leave the Subleased Premises, broom clean and in as good order, repair and condition as they were on the date the Term of this
Sublease commenced, ordinary wear and tear excepted. The obligations of Subtenant to perform this covenant shall survive the
expiration or other termination of this Sublease. Notwithstanding anything in the Prime Lease or this Sublease to the contrary:
(i) Subtenant shall not be responsible for the cost or performance of the removal of any alterations, additions or improvements in
the  Subleased  Premises  performed  or  installed  by  prior  to  the  Commencement  Date  hereof  (collectively,  “Pre-Existing
Improvements”).  Any  removal  of  or  restoration  work  related  to  the  Pre-Existing  Improvements  shall  be  performed  after  the
expiration of the Term of this Sublease.

18.

Default; Remedies.

        a.    Sublandlord reserves the right to terminate this Sublease and Subtenant’s occupancy of the Subleased Premises in
the event that (i) Subtenant fails to make any Base Rent payment, Additional Rent or any other monetary amount due under this
Sublease on or before the date on which the same become due and payable, if such condition continues for five (5) business
days  after  written  notice  that  the  same  are  due;  provided,  however  if  Subtenant  shall  fail  to  pay  any  of  the  foregoing  (after
receipt  by  Subtenant  of  written  notice  from  Sublandlord)  when  due  two  (2)  times  in  any  period  of  twelve  (12)  consecutive
months, then Sublandlord shall not be required to give notice to Subtenant of any future failure to pay during the remainder of
the Term and any extension thereof, and such failure shall thereafter constitute an Event of Default if not cured within five (5)
business days after the same are due, or (ii) Subtenant fails to observe and perform any of its obligations under this Sublease
within twenty (20) days after written notice thereof from Sublandlord, except to the extent such default cannot be cured within
said twenty (20) day period, in which event Subtenant shall have such additional time as may be necessary to cure such default
so long as Subtenant has commenced cure within such twenty (20) day period and is diligently and continuously pursuing the
remedies  necessary  to  cure  such  default  within  thirty  (30)  days  after  notice  thereof.  The  acceptance  of  any  late  payments  of
Base  Rent  shall  not  be  deemed  a  waiver  of  Sublandlord’s  rights  under  this  section.  In  the  event  it  becomes  necessary  for
Sublandlord or Subtenant to enforce its rights against the other party hereunder by legal action the non-prevailing party shall pay
all of the prevailing party’s reasonable legal costs and expenses in connection therewith including reasonable legal fees.

        b.    In case of any such termination, Subtenant shall pay to and indemnify Sublandlord each month against all loss of rent
and  all  costs,  expenses,  or  obligations  which  Sublandlord  may  incur  by  reason  of  any  such  termination  between  the  time  of
termination and the end of the Term, or, at such election of Sublandlord, exercised at the time of the termination or at any time
thereafter, Subtenant shall pay to Sublandlord as damages, in a lump sum, the then present value of the aggregate amount of
rent  and  other  payments  provided  herein  to  be  paid  by  Subtenant  to  Sublandlord  through  the  time  when  the  Term  of  this
Sublease would have expired but for the default by Subtenant. It is understood and agreed that at the time of the termination or
at  any  time  thereafter  that  Subtenant  shall  be  liable  for  any  expenses  incurred  by  Sublandlord  in  connection  with  obtaining
possession  of  the  Subleased  Premises,  with  removing  from  the  Subleased  Premises  property  of  Subtenant  and  persons
claiming under Subtenant

7

(including warehouse charges), with putting the Subleased Premises into condition for delivery to Landlord or reletting and with
any reletting, including without limitation, attorneys’ fees and brokers’ fees, and that any monies collected from any reletting shall
be  applied  first  to  the  foregoing  expenses  and  then  to  the  payment  of  rent  and  all  other  payments  due  from  Subtenant  to
Sublandlord.

19.

Indemnification. Subtenant shall indemnify and hold harmless Sublandlord from and against any and all losses,
claims, damages, liabilities, actions, costs and expenses (including reasonable attorneys’ fees) incurred by Sublandlord arising
out  of  or  related  to  this  Sublease  or  Subtenant’s  use  and  occupancy  of  the  Subleased  Premises,  provided  that  the  foregoing
indemnity  shall  not  include  any  cost  or  damage  arising  from  any  act,  omission  or  negligence  of  the  Sublandlord,  or  the
Sublandlord’s contractors, licensees, invitees, agents, servants or employees. This indemnification shall survive termination of
this Sublease.

20.

Notices. Any notice required or permitted to be given hereunder shall be in writing and may be given by certified
mail, return receipt requested, personal delivery, Federal Express or other delivery service. If notice is given by certified mail,
return receipt requested, notice shall be deemed given three (3) days after the notice is deposited with the U.S. Mail, postage
prepaid, addressed to Subtenant or to Sublandlord at the address set forth below. If notice is given by personal delivery, Federal
Express or other delivery service, notice shall be deemed given on the date the notice is actually received by Sublandlord or
Subtenant. Either party may by notice to the other specify a different address for notice purposes.

    If to Sublandlord:    Agios Pharmaceuticals, Inc.
        88 Sidney Street
        Cambridge, MA 02139
        Attn: James Burns    

    With a copy to:    Eckert, Seamans, Cherin & Mellott, LLC
        Two International Place, 16  Floor
        Boston, MA 02110
        Attn: Stuart A. Offner, Esq.

th

    If to Subtenant:    Watershed Informatics, Inc.
        1 Broadway, 14  Floor
        Cambridge, MA 02142]
        Attn: Jonathan Wang, CEO

th

    With a copy to:    Langer & McLaughlin, LLP
        535 Boylston Street, 3  Floor
        Boston, MA 02116
        Attn: Watershed Informatics Matters    

rd

If Sublandlord receives any notice from Landlord which affects Subtenant or the Subleased Premises, Sublandlord shall provide
Subtenant with a copy thereof.

21.

Hold Over. If  Subtenant  holds  over  after  the  expiration  of  the  Term  or  earlier  termination  thereof,  such  tenancy
shall be a tenancy at sufferance, and shall not constitute a renewal hereof or an extension for any further term, and in such case
Base Rent shall be payable at a monthly rate equal to 150% of Base Rent and Additional Rent applicable during the last rental
period of the Term for the first two (2) months following the expiration of the Term, then at a monthly rate equal to 200% of Base
Rent and Additional Rent applicable during the last rental period of the Term during any further hold over period beyond two (2)
months.  Such  tenancy  shall  be  subject  to  every  other  applicable  term,  covenant  and  agreement  contained  herein.  Nothing
contained in this paragraph shall be construed as consent by Sublandlord to any holding over by Subtenant, and Sublandlord
expressly reserves the right to require Subtenant to surrender possession of the Subleased Premises to Landlord as provided in
the Sublease and Prime Lease upon the expiration or other termination of this Sublease. If

8

    
Subtenant  holds  over  without  Sublandlord’s  express  written  consent,  and  tenders  payment  of  rent  for  any  period  beyond  the
expiration of the Term by way of check (whether directly to Sublandlord, its agents, or to a lock box) or wire transfer, Subtenant
acknowledges and agrees that the cashing of such check or acceptance of such wire shall be considered inadvertent and not be
construed as creating a month-to-month tenancy. The provisions of this paragraph shall not be deemed to limit or constitute a
waiver of any other rights or remedies of Sublandlord provided herein or at law. If Subtenant fails to surrender the Subleased
Premises  upon  the  termination  or  expiration  of  this  Sublease,  in  addition  to  any  other  liabilities  to  Sublandlord  accruing
therefrom, Subtenant shall protect, defend, indemnify and hold Sublandlord harmless from all loss, costs (including reasonable
attorneys’  fees)  and  liability  resulting  from  such  failure,  including,  without  limiting  the  generality  of  the  foregoing,  any  claims
made by Landlord or any succeeding tenant founded upon such failure to surrender and any lost profits to Sublandlord resulting
therefrom.
22.

Brokerage Commissions. Each party hereby represents and warrants to the other that it has had no dealings with
any real estate broker or agent in connection with this Sublease, excepting only CBRE, which shall be paid in accordance with
an existing agreement with Sublandlord, and that it knows of no other real estate broker or agent who is or might be entitled to a
commission in connection with this Sublease. Each party agrees to protect, defend, indemnify and hold the other harmless from
and  against  any  and  all  claims  inconsistent  with  the  foregoing  representations  and  warranties  for  any  brokerage,  finder’s  or
similar fee or commission in connection with this Sublease, if such claims are based on or relate to any act of the indemnifying
party which is contrary to the foregoing representations and warranties.

23. Waiver of Jury Trial. THE PARTIES HEREBY WAIVE THEIR RESPECTIVE RIGHTS TO TRIAL BY JURY IN ANY
ACTION OR PROCEEDING INVOLVING THE SUBLEASED PREMISES, BUILDING OR ARISING OUT OF THIS SUBLEASE
OR THE PRIME LEASE.

24.

Modification. This Sublease may only be modified by written agreement signed by Sublandlord and Subtenant.

25.

Counterparts. This Sublease may be executed in counterparts, each of which shall be an original and all of which,

when assembled, shall constitute but one document.

26.
of Massachusetts.

Governing Law. The terms and provisions of this Sublease shall be governed by the laws of the Commonwealth

27.

Consent.  It  is  expressly  understood  and  agreed  that  this  Sublease,  and  the  parties’  rights  and  obligations
hereunder,  are  contingent  upon  the  Landlord’s  written  consent  of  this  Sublease,  substantially  in  the  form  attached  hereto  as
Exhibit D. If Landlord’s consent shall not have been obtained within thirty (30) days after the date of this Sublease, Sublandlord
and Subtenant shall each have the right to terminate this Sublease as set forth in Section 2(b) above.

28.

Subtenant Improvements.

a.        Subtenant  shall  have  the  right  to  hire  a  mutually  approved  architect,  construction  manager  and  project
manager for any construction relative to the Subleased Premises (the “Subtenant Improvements”). Prior to the performance of
any of the Subtenant Improvements, Subtenant shall submit to Sublandlord and Landlord for Sublandlord’s and Landlord’s prior
written  approval,  not  to  be  unreasonably  withheld  or  delayed,  Subtenant’s  plans  and  specifications  for  the  Subtenant
Improvements  on  the  Subleased  Premises.  Subtenant  may  commence  its  work  only  after:  (a)  receipt  of  Sublandlord’s  and
Landlord’s approval to perform the same; (b) Subtenant’s receipt of any and all required licenses, permits and approvals from

9

any local authority or any other governmental agency or authority; and (c) delivery to Sublandlord and Landlord certificates of
insurance naming the Sublandlord and Landlord as additional insured, evidencing the maintenance, by each contractor or other
worker  to  be  employed  in  the  performance  of  the  Subtenant  Improvements,  of  comprehensive  general  liability  insurance  with
limits in the amount of $1,000,000.00 per occurrence, property damage insurance with limits in the amount of $500,000.00 per
occurrence,  and  workers  compensation  insurance  to  statutory  limits.  All  insurance  policies  shall  be  issued  by  responsible
companies  qualified  to  conduct  business  in  the  Commonwealth  of  Massachusetts  and  such  insurance  policy  shall  provide  for
notification to Sublandlord and Landlord at least thirty (30) days prior to the cancellation of any such policy. Subtenant hereby
agrees  and  further  does  warrant  and  represent  to  Sublandlord  that  the  cost  of  performing  any  such  work  on  the  Subleased
Premises shall be the sole obligation of Subtenant.

b.        Subject  to  Sublandlord’s  review  and  approval  of  Subtenant’s  final  plans  and  specifications  therefor,  and
further  subject  to  the  terms  and  conditions  of  the  Prime  Lease,  including,  without  limitation,  Landlord’s  review  and  approval
thereof, Sublandlord approves the conceptual design of Subtenant Improvements as set forth on Exhibit C, and addition of one
(1) HVAC vent in Subtenant’s IT Room.

29.

Additional Access.

a.     Subtenant shall have temporary access to the kitchen area located in the 5,388 sq. ft. area shown on Exhibit
A on the first (1 ) floor of the Building for the period commencing on the Commencement Date and expiring on the earlier of,
(i)  the  date  Subtenant  has  completed  its  Subtenant  Improvements  which  shall  include  a  café  space  within  its  own  dedicated
Subleased Premises, and (ii) September 30, 2023 (subject to External Causes (as defined in the Prime Lease)).

st

st

b.    Subtenant shall have access to the gym area located in the 2,868 sq. ft. area shown on Exhibit A on the first
(1 )  floor  of  the  Building  for  a  fee  of  $50  per  user  per  month.  The  number  of  gym  passes  will  be  determined  and  agreed  to
between the parties on a monthly basis, and Sublandlord shall invoice Subtenant directly for the cost of all gym passes on an
annual or other periodic basis.

30.

Sublandlord’s Representations.  Sublandlord  represents  and  warrants  to  Subtenant,  and  covenants  and  agrees
with  Subtenant,  that:  (i)  Sublandlord  is  the  holder  of  the  interest  of  the  “Tenant”  under  the  Prime  Lease  with  respect  to  the
Subleased  Premises  and  such  interest  has  not  previously  been  assigned,  transferred  or  sublet,  (ii)  the  Prime  Lease  is  in  full
force and effect, (iii) Sublandlord has no actual knowledge of any default by it under the Prime Lease and Sublandlord has not
received  any  notices  of  default  from  Landlord  which  have  not  been  cured,  (iv)  to  Sublandlord’s  knowledge,  Landlord  is  not  in
default under the Prime Lease, (v) Exhibit E annexed hereto contains a true, correct and complete copy of the redacted Prime
Lease,  and  (vi)  Sublandlord  shall  not  amend  the  Prime  Lease  in  any  manner  that  will  result  in  a  material  increase  of  any
obligation of Subtenant or material decrease of any rights of Subtenant without Subtenant’s prior written consent, which consent
shall not be unreasonably withheld, conditioned or delayed.

31.

Parking. Subtenant shall have access to five (5) unreserved parking passes for the parking garage located at 80
Lansdowne Street, Cambridge, Massachusetts, upon the terms and conditions provided in the Prime Lease. Subtenant shall pay
to  Sublandlord  $400.00  per  month  for  each  parking  pass,  or  whatever  the  then  prevailing  rate  charged  by  Landlord  to
Sublandlord from time to time for such parking passes.

[SIGNATURES APPEAR ON FOLLOWING PAGE.]

10

        IN  WITNESS  WHEREOF,  the  Sublandlord  and  Subtenant  have  each  executed  this  Sublease  effective  as  of  the  date  first
above written.

SUBLANDLORD:

Agios Pharmaceuticals, Inc.,
a Delaware corporation

By:    /s/ Jim Burns
Name:    Jim Burns
Title:    Chief Legal Officer

SUBTENANT:

Watershed Informatics, Inc.,
a Delaware corporation

By:    /s/ Jonathan Wang
Name:    Jonathan Wang
Title:    Chief Executive Officer

11

Exhibit A

Subleased Premises

**Note: The 7,407 SF area shown above represents the Subleased Premises.

12

Exhibit B

Existing Furniture and Equipment

Comment
Universal USB Dock
(*w/DisplayLink Drivers)
2 Monitors Mounted /desk
(including offices)
Logitech Combo w/Unifying USB
receiver on dock

Comment
64-112 Huddle
64-117 Huddle
64-121 - Kallipolis
64-122 - Santorini
Locaon
64-112 Huddle
64-117 Huddle
64-121 - Kallipolis
64-122 - Santorini
Door Near 64-1 lobby (Digital
Signage

Serial#
FOC2330NS93
FOC2330NS6B
FOC2329P22R
FOC2330NS9T
Serial #
07YTHNFM800727Z
07YTHNFM800730F
08GXHNIM600335Z
07YKHNGM900325B

LH55QBREBGCXZA

61

122

61

Quanty
1
1
1
1
Quanty
1
1
1
1

1

IT Equipment:

Item Descripon

Quanty

ThinkPad USB 3.0 Ultra Dock

ThinkVision P24q-10 Monitor
Logitech Wireless Keyboard/Mouse
Combo

Conference/Huddle Room
Cisco Webex Room Kit
Cisco Webex Room Kit
Cisco Webex Room Kit Plus
Cisco Webex Room Kit
TV Displays
Samsung QB49R
Samsung QB49R
Samsung QB98R
Samsung QB65R

Samsung QB55R

Furniture:

Area

Large conference room

Item
Table
Chairs
Benches

Details
24" X 60"

Quanty
8
17
3

13

Small conference room

Huddle room

Common Area

Table
Chairs
Chairs

Table
Chairs

Table
Table
Chairs
Book case
Stools

42" X 96"
Black
Green

72" Horn Shape
Orange

48" X 96"
36" round glass
White
36" X 105"
Blue

Phone booths

Phone booth

Framery

Single office

Double office

Workstaons

Task Seang
Desk
Credenza
Dual monitor arms
Table
Side chairs

Task Seang
Desk
Credenza
Dual monitor arms

Task Seang
Desk
Credenza
Coat cubby
Dual monitor arms

Height adjustable

30" Round

Height adjustable

Height adjustable

14

1
5
4

2
8

1
1
4
1
6

2

1
1
1
1

2

12
12
11
12

46
48
48
48
48

Coat racks

Wellness room

Coat racks

Table

portable

7" round

7

1

15

Exhibit C

Subtenant Improvements

16

Exhibit D

Form of Consent to Sublease

CONSENT TO SUBLEASE

    This CONSENT TO SUBLEASE (this “Consent”) is entered into as of the 14th day of April, 2023, by and between
BRE-BMR  64  SIDNEY  LLC,  a  Delaware  limited  liability  company  (“Landlord”),  as  successor-in-interest  to  UP  64  SIDNEY
STREET, LLC, a Delaware limited liability company, AGIOS PHARMACEUTICALS, INC. a Delaware corporation (“Tenant”),
and WATERSHED INFORMATICS, INC. a Delaware corporation (“Subtenant”).

RECITALS

1.

WHEREAS, Landlord and Tenant are parties to that certain Lease dated as of November 17, 2017, as amended by
that certain First Amendment to Lease dated as of April 11, 2018, as amended by that certain Second Amendment to Lease dated
as of December 14, 2018, and as amended by that certain Third Amendment to Lease dated as of April 11, 2019 (as the same may
have been amended, amended and restated, supplemented or otherwise modified from time to time, the “Master Lease”), whereby
Tenant leases certain premises (the “Premises”) from Landlord at 64 Sidney Street, Cambridge, Massachusetts (the “Building”);
and

2.

WHEREAS, Tenant has applied to Landlord for its consent to that certain Sublease dated as of April 14, 2023 (the
“Sublease”),  by  and  between  Tenant  and  Subtenant,  whereby  Tenant  subleases  its  interest  in  a  portion  of  the  Premises  (such
portion, the “Subleased Premises”) to Subtenant.

AGREEMENT

NOW, THEREFORE, Landlord hereby consents to the Sublease, subject to and upon the following terms and conditions,

to each of which Tenant, Subtenant and Landlord expressly agree:

1.

Nothing contained in this Consent shall either:

(a)

operate  as  a  consent  to  or  approval  by  Landlord  of  any  of  the  provisions  of  the  Sublease  or  as  a
representation  or  warranty  by  Landlord,  and  Landlord  shall  not  be  bound  or  estopped  in  any  way  by  the  provisions  of  the
Sublease; or

(b)

be construed to modify, waive or affect any of the provisions, covenants or conditions of, or any rights or
remedies of Landlord under, the Master Lease. In the case of any conflict between the provisions of this Consent and those of the
Sublease, the provisions of this Consent shall prevail.

2.

Each of Tenant and Subtenant expressly assumes and agrees that during the term of the Sublease, it shall perform
and comply with each and every obligation of Tenant under the Master Lease; provided that, in the case of Subtenant, Subtenant
shall not violate the Master Lease but shall only be obligated to perform the affirmative obligations of Tenant under the Master
Lease to the extent of Subtenant’s obligations under the Sublease.

3.

If Landlord is entitled to a share of any portion of the rent or other payments that Subtenant is obligated to pay to

Tenant pursuant to the Sublease, Landlord hereby requests that

17

Tenant pay such portion to Landlord, and Tenant hereby acknowledges and agrees to pay such portion to Landlord on a timely
basis.

4.

Neither the Sublease nor this Consent shall release or discharge Tenant from any obligation or liability under the
Master  Lease,  and  Tenant  shall  remain  liable  and  responsible  for  the  full  performance  of  all  of  the  provisions,  obligations,
covenants and conditions set forth in the Master Lease. The acceptance of rent by Landlord from Subtenant or from any other
person shall not be deemed a waiver by Landlord of any provisions of the Master Lease. Tenant and Subtenant understand and
represent that by entering into the Sublease, Landlord’s rights, remedies and liabilities under the Master Lease have not in any
way been modified, diminished or waived.

5.

Tenant  and  Subtenant  warrant  that  the  copy  of  the  Sublease  attached  hereto  as  Exhibit  A  represents  the  entire
agreement between them. Subtenant further warrants that there was no compensation or consideration paid to either party as a
condition of this Consent or the Sublease other than as stated herein or therein.

6.

The Sublease shall be subject and subordinate at all times to the Master Lease and all of its provisions, covenants

and conditions. In case of a conflict, the provisions of the Master Lease shall prevail.

7.

This  Consent  shall  not  constitute  consent  to  any  subsequent  assignment  of  the  Master  Lease  or  the  Sublease  or
subletting of the Premises. Neither Tenant nor Subtenant shall voluntarily or by operation of law, directly or indirectly (whether
by merger or otherwise), assign, pledge, hypothecate, or otherwise transfer this Consent or any of such party’s rights, interests or
obligations  under  this  Consent,  in  whole  or  in  part,  without  the  prior  written  consent  of  Landlord  in  its  sole  and  absolute
discretion, and any such purported assignment, pledge, hypothecation, or transfer without the prior written consent of Landlord
shall be null and void.

8.

In  addition  to  and  without  limiting  any  indemnity  obligations  set  forth  in  the  Master  Lease,  Tenant  agrees  to
reimburse, indemnify, save, defend (at Landlord’s option and with counsel reasonably acceptable to Landlord) and hold harmless
Landlord and its affiliates and their respective shareholders, partners, directors, officers, employees, lenders and ground lessors
and their respective successors and assigns, and Landlord’s contractors and agents (collectively with Landlord, each a “Landlord
Indemnitee”)  for,  from  and  against  any  and  all  demands,  claims,  liabilities,  losses,  costs,  expenses,  actions,  causes  of  action,
damages,  suits  or  judgments,  and  all  reasonable  expenses  (including  reasonable  attorneys’  fees,  charges  and  disbursements,
regardless  of  whether  the  applicable  demand,  claim,  action,  cause  of  action  or  suit  is  voluntarily  withdrawn  or  dismissed)
incurred in investigating or resisting the same (collectively, “Claims”) of any kind or nature arising from Subtenant’s failure to
perform  or  comply  with  any  of  Tenant’s  or  Subtenant’s  obligations  under  the  Sublease  or  this  Consent,  except  to  the  extent
directly  caused  by  Landlord’s  negligence  or  willful  misconduct.  Subtenant  agrees  to  reimburse,  indemnify,  save,  defend  (at
Landlord’s  option  and  with  counsel  reasonably  acceptable  to  Landlord)  and  hold  harmless  the  Landlord  Indemnitees  for,  from
and against any and all Claims of any kind or nature arising from Tenant’s or Subtenant’s obligations under the Sublease or this
Consent,  except  to  the  extent  directly  caused  by  Landlord’s  negligence  or  willful  misconduct.  Tenant’s  and  Subtenant’s
obligations  under  this  Section  shall  not  be  affected,  reduced  or  limited  by  any  limitation  on  the  amount  or  type  of  damages,
compensation  or  benefits  payable  by  or  for  Tenant  or  Subtenant  under  workers’  compensation  acts,  disability  benefit  acts,
employee benefit acts or similar legislation. Tenant’s and Subtenant’s obligations under this Section shall survive the expiration
or earlier termination of this Consent.

9.

Subtenant shall reimburse, indemnify, save, defend (at Landlord’s option and with counsel reasonably acceptable

to Landlord) and hold harmless the Landlord Indemnitees for,

18

from  and  against  any  and  all  Claims  imposed  upon  or  incurred  by  or  asserted  against  a  Landlord  Indemnitee  and  directly  or
indirectly arising out of or in any way relating to Tenant’s or Subtenant’s obligations under the Sublease or this Consent.

10.

In the event of any default by Subtenant under the Master Lease, Landlord may proceed directly against any or all
of Tenant, Subtenant, any guarantors or anyone else liable under the Master Lease without first exhausting Landlord’s remedies
against any other person or entity liable therefor to Landlord.

11.

In the event that Tenant defaults in its obligations under the Master Lease or in the event that the Master Lease is
otherwise  terminated  prior  to  its  natural  expiration,  Landlord  may,  at  its  option  and  without  being  obligated  to  do  so,  require
Subtenant to attorn to Landlord with respect to the Subleased Premises. Upon Landlord’s notice to Subtenant, (a) Subtenant shall
thereafter make all payments otherwise due Tenant directly to Landlord, which payments shall be received by Landlord without
any liability being incurred by Landlord, except to credit such payment against amounts due by Tenant under the Lease and (b)
within  ten  (10)  days  after  such  notice,  Subtenant  shall  deposit  with  Landlord  the  entire  Security  Deposit  (as  defined  in  the
Sublease),  and  replenish  such  Security  Deposit  from  time  to  time,  as  necessary  to  maintain  the  amount  required  under  the
Sublease. If Landlord elects to require Subtenant to so attorn, then Landlord shall undertake the obligations of Tenant under the
Sublease  with  respect  to  the  Subleased  Premises  from  the  time  of  the  exercise  of  Landlord’s  option  under  this  Section  until
termination of the Sublease; provided, however,  that  Landlord  shall  not  be  liable  for  any  prepaid  rents  or  any  security  deposit
paid by Subtenant to Tenant, nor shall Landlord be liable for any other defaults of Tenant under the Sublease.

12.

Except as otherwise expressly set forth in this Consent, each party shall pay its own costs and expenses incurred in
connection  with  this  Consent  and  such  party’s  performance  under  this  Consent,  provided,  that  if  any  party  commences  a
proceeding,  demand,  claim,  action,  cause  of  action  or  suit  against  another  party(ies)  arising  out  of  or  in  connection  with  this
Consent,  then  the  substantially  prevailing  party(ies)  shall  be  reimbursed  by  the  other  party(ies)  for  all  reasonable  costs  and
expenses,  including  reasonable  attorneys’  fees  and  expenses,  incurred  by  the  substantially  prevailing  party(ies)  in  such
proceeding, demand, claim, action, cause of action or suit, and in any appeal in connection therewith (regardless of whether the
applicable proceeding, demand, claim, action, cause of action, suit or appeal is voluntarily withdrawn or dismissed).

13.

Each of Tenant and Subtenant represents and warrants that it has dealt with no broker, agent or other person in
connection with this transaction and that no broker, agent or other person brought about this transaction, other than CBRE, and
Tenant and Subtenant agree to reimburse, indemnify, save, defend (at Landlord’s option and with counsel reasonably acceptable
to Landlord) and hold harmless the Landlord Indemnitees for, from and against any Claims by this or any other broker, agent or
other  person  claiming  a  commission  or  other  form  of  compensation  by  virtue  of  having  dealt  with  Tenant  or  Subtenant  with
regard to the Sublease. The provisions of this Section shall survive the expiration or earlier termination of this Consent or the
Master Lease.

14.

Except  as  otherwise  stated  in  this  Consent,  any  notice,  consent,  demand,  invoice,  statement  or  other
communication  required  or  permitted  to  be  given  under  this  Consent  shall  be  in  writing  and  shall  be  given  by  (a)  personal
delivery, (b) overnight delivery with a reputable international overnight delivery service, such as FedEx, or (c) facsimile or email
transmission,  so  long  as  such  transmission  is  followed  within  one  (1)  business  day  by  delivery  utilizing  one  of  the  methods
described in (a) or (b). Any such notice, consent, demand, invoice, statement or other communication shall be deemed delivered
(x) upon receipt, if given in accordance with subsection (a); (y) one (1) business day after deposit with a reputable international
overnight

19

delivery service, if given in accordance with subsection (b); or (z) upon transmission, if given in accordance with subsection (c).
Any notice, consent, demand, invoice, statement or other communication required or permitted to be given under this Consent
shall be addressed to the parties at the following addresses:

Landlord:

BRE-BMR 64 SIDNEY LLC
4570 Executive Drive, Suite 400
San Diego, California 92121
Attn: Legal Department
Facsimile: (858) 485-9843
Email: legalreview@biomedrealty.com

Tenant:

Agios Pharmaceuticals, Inc.
88 Sidney Street
Cambridge, MA 02139
Attn: James Burns

20

Subtenant:

Watershed Informatics, Inc.
th
1 Broadway, 14  Floor
Cambridge, Massachusetts 02412
Attn: Jonathan Wang, CEO
Email: jonathan@watershed.ai

Either  party  may,  by  notice  to  the  other(s)  given  pursuant  to  this  Section,  specify  additional  or  different  addresses  for

notice purposes.

15. Where  applicable  in  this  Consent,  the  singular  includes  the  plural  and  the  masculine  or  neuter  includes  the
masculine,  feminine  and  neuter.  The  words  “include,”  “includes,”  “included”  and  “including”  mean  “‘include,’  etc.,  without
limitation.”  The  word  “shall”  is  mandatory  and  the  word  “may”  is  permissive.  Landlord,  Tenant  and  Subtenant  have  each
participated  in  the  drafting  and  negotiation  of  this  Consent,  and  the  language  in  all  parts  of  this  Consent  shall  be  in  all  cases
construed as a whole according to its fair meaning and not strictly for or against either Landlord, Tenant or Subtenant.

16.

Time is of the essence with respect to the performance of every provision of this Consent.

17.

The  terms  of  this  Consent  are  intended  by  the  parties  as  a  final,  complete  and  exclusive  expression  of  their
agreement with respect to the terms that are included in this Consent, and may not be contradicted or supplemented by evidence
of  any  other  prior  or  contemporaneous  agreement.  No  provision  of  this  Consent  may  be  modified,  amended  or  supplemented
except by an agreement in writing signed by Landlord, Tenant and Subtenant.

18.

Notwithstanding  anything  to  the  contrary  contained  in  this  Consent,  Tenant’s  and  Subtenant’s  obligations  under
this  Consent  are  independent  and  shall  not  be  conditioned  upon  performance  by  Landlord.  Each  provision  of  this  Consent
performable by Tenant or Subtenant shall be deemed both a covenant and a condition.

19.

Any  provision  of  this  Consent  that  shall  prove  to  be  invalid,  void  or  illegal  shall  in  no  way  affect,  impair  or
invalidate any other provision hereof, and all other provisions of this Consent shall remain in full force and effect and shall be
interpreted as if the invalid, void or illegal provision did not exist.

20.

Each of the covenants, conditions and agreements contained in this Consent shall inure to the benefit of and shall
apply  to  and  be  binding  upon  the  parties  hereto  and  their  respective  heirs,  legatees,  devisees,  executors,  administrators  and
permitted  successors  and  assigns.  Nothing  in  this  section  shall  in  any  way  alter  the  provisions  of  this  Consent  restricting
assignment.

21.

This  Consent  is  for  the  sole  benefit  of  the  parties  and  their  respective  heirs,  legatees,  devisees,  executors,
administrators  and  permitted  successors  and  assigns,  and  nothing  in  this  Consent  shall  give  or  be  construed  to  give  any  other
person or entity any legal or equitable rights.

22.

This Consent shall be governed by and construed and enforced in accordance with the laws of the Massachusetts,

without regard to Massachusetts’s conflict of law principles.

21

23.

Tenant and Subtenant guaranty, warrant and represent that the individual or individuals signing this Consent have
the  power,  authority  and  legal  capacity  to  sign  this  Consent  on  behalf  of  and  to  bind  all  entities,  corporations,  partnerships,
limited liability companies, joint venturers or other organizations and entities on whose behalf such individual or individuals have
signed.

24.

Tenant and Subtenant shall take all such actions and execute all such documents as are reasonable and necessary to

implement or evidence the transactions contemplated by this Consent.

25.

A  facsimile,  portable  document  format  (PDF)  signature  or  other  electronic  signature  on  this  Consent  shall  be
equivalent  to,  and  have  the  same  force  and  effect  as,  an  original  signature.  This  Consent  may  be  executed  in  one  or  more
counterparts, each of which, when taken together, shall constitute one and the same document.

26.

No waiver of any term, covenant or condition of this Consent shall be binding unless executed in writing by the
party entitled to the benefit of such term, covenant or condition. The waiver of any breach or default of any term, covenant or
condition contained in this Consent shall not be deemed to be a waiver of any preceding or subsequent breach or default of such
term,  covenant  or  condition  or  any  other  term,  covenant  or  condition  of  this  Consent.  Except  as  expressly  provided  in  this
Consent, the rights and remedies under this Consent are in addition to and not exclusive of any other rights, remedies, powers and
privileges under this Consent or available at law, in equity or otherwise. No failure to exercise or delay in exercising any right,
remedy,  power  or  privilege  shall  operate  as  a  waiver  thereof,  and  no  single  or  partial  exercise  of  any  right,  remedy,  power  or
privilege shall preclude the exercise of any other right, remedy, power or privilege.

27.

To  the  extent  permitted  by  applicable  laws,  the  parties  waive  trial  by  jury  in  any  action,  proceeding  or
counterclaim brought by the other party(ies) hereto related to matters arising out of or in any way connected with this Consent or
any claim of injury or damage related to this Consent.

[REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

22

IN  WITNESS  WHEREOF,  Tenant  and  Subtenant  have  affixed  their  respective  signatures  hereto  as  evidence  of
understanding of and agreement to the above, and Landlord has affixed its signature hereto to convey its consent to the Sublease.

LANDLORD:

BRE-BMR 64 SIDNEY LLC,
a Delaware limited liability company

By:                        
Name:                        
Title:                        

TENANT:

AGIOS PHARMACEUTICALS, INC.
a Delaware corporation

By:                        
Name:                        
Title:                        

SUBTENANT:

WATERSHED INFORMATICS, INC,
a Delaware corporation

By:                        
Name:    Jonathan Wang
Title:    CEO

EXHIBIT A

SUBLEASE

(See attached)

Exhibit E

Prime Lease

    25

109556800.13

Entity
Agios Securities Corporation
Agios Limited
Agios International Sarl (GmbH)
Agios Netherlands B.V.
Agios Germany GmbH
Agios Italy S.R.L.
Agios France SARL

Exhibit 21.1

SUBSIDIARIES

State or other Jurisdiction of Incorporation or Organization
Massachusetts
Bermuda
Switzerland
The Netherlands
Germany
Italy
France

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-272615, 333-269951, 333-262956, 333-266675,
333-267624, 333- 269108, 333-253498, 333-236523, 333-229669, 333-223031, 333-216106, 333-209755, 333-201796, 333-193802, and 333-190101) and
Form S-3 (No. 333-269949) of Agios Pharmaceuticals, Inc. of our report dated February 15, 2024 relating to the financial statements and the effectiveness
of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP
Boston, Massachusetts
February 15, 2024

1

 
 
Exhibit 31.1

I, Brian Goff, certify that:

CERTIFICATION

1.

2.

3.

4.

I have reviewed this Annual Report on Form 10-K of Agios Pharmaceuticals, Inc.;

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;

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;

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.

b.

c.

d.

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;

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;

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

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.

b.

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

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: February 15, 2024

/s/ Brian Goff
Brian Goff
Chief Executive Officer
(principal executive officer)

I, Cecilia Jones, certify that:

CERTIFICATION

Exhibit 31.2

1.

2.

3.

4.

I have reviewed this Annual Report on Form 10-K of Agios Pharmaceuticals, Inc.;

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;

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;

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.

b.

c.

d.

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;

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;

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

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.

b.

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

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: February 15, 2024

/s/ Cecilia Jones
Cecilia Jones
Chief Financial Officer
(principal financial officer)

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.1

In connection with this Annual Report on Form 10-K of Agios Pharmaceuticals, Inc. (the “Company”) for the fiscal year ended December 31, 2023, as
filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, Brian Goff, Chief Executive Officer of the
Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, that, to his knowledge on the date hereof:

1.

2.

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the
Company.

Date: February 15, 2024

/s/ Brian Goff
Brian Goff
Chief Executive Officer
(principal executive officer)

 
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.2

In connection with this Annual Report on Form 10-K of Agios Pharmaceuticals, Inc. (the “Company”) for the fiscal year ended December 31, 2023, as
filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, Cecilia Jones, Chief Financial Officer of the
Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, that, to her knowledge on the date hereof:

1.

2.

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the
Company.

Date: February 15, 2024

/s/ Cecilia Jones
Cecilia Jones
Chief Financial Officer
(principal financial officer)

 
Ex. 97.1

AGIOS PHARMACEUTICALS, INC.

Dodd-Frank Compensation Recovery Policy

This Compensation Recovery Policy (this “Policy”) is adopted by Agios Pharmaceuticals, Inc. (the “Company”) in accordance
with Nasdaq Listing Rule 5608 (“Rule 5608”), which implements Rule 10D-1 under the Securities Exchange Act of 1934, as
amended (the “Exchange Act”) (as promulgated pursuant to Section 954 of the Dodd-Frank Wall Street Reform and Consumer
Protection Act of 2010). This Policy is effective as of October 2, 2023 (the “Effective Date”).

1.

Definitions

(a)

“Accounting Restatement” means a requirement that the Company prepare an accounting restatement due to the

material noncompliance of the Company with any financial reporting requirement under the U.S. federal securities laws,
including any required accounting restatement to correct an error in previously issued financial statements that is material to the
previously issued financial statements, or that would result in a material misstatement if the error were corrected in the current
period or left uncorrected in the current period. Changes to the Company’s financial statements that do not represent error
corrections are not an Accounting Restatement, including: (A) retrospective application of a change in accounting principle; (B)
retrospective revision to reportable segment information due to a change in the structure of the Company’s internal organization;
(C) retrospective reclassification due to a discontinued operation; (D) retrospective application of a change in reporting entity,
such as from a reorganization of entities under common control; and (E) retrospective revision for stock splits, reverse stock
splits, stock dividends or other changes in capital structure.

(b)

(c)

“Committee” means the Compensation & People Committee of the Company’s Board of Directors (the “Board”).

“Covered Person” means a person who served as an Executive Officer at any time during the performance period

for the applicable Incentive-Based Compensation.

(d)

“Erroneously Awarded Compensation” means the amount of Incentive-Based Compensation that was Received

that exceeds the amount of Incentive-Based Compensation that otherwise would have been Received had the amount of
Incentive-Based Compensation been determined based on the restated amounts, computed without regard to any taxes paid by the
Covered Person or by the Company on the Covered Person’s behalf. For Incentive-Based Compensation based on stock price or
total shareholder return, where the amount of Erroneously Awarded Compensation is not subject to mathematical recalculation
directly from the information in an Accounting Restatement, the amount of Erroneously Awarded Compensation will be based on
a reasonable estimate by the Committee of the effect of the Accounting Restatement on the stock price or total shareholder return
upon which the Incentive-Based Compensation was Received. The Company will maintain documentation of the determination
of that reasonable estimate and provide such documentation to Nasdaq.

(e)

“Executive Officer” means the Company’s officers as defined in Rule 16a-1(f) under the Exchange Act.

(f)

“Financial Reporting Measures” means (A) measures that are determined and presented in accordance with the
accounting principles used in preparing the Company’s financial statements, and any measures that are derived wholly or in part
from such measures (whether or not such measures are presented within the Company’s financial statements or

    1

included in a filing made with the U.S. Securities and Exchange Commission), (B) stock price and (C) total shareholder return.

(g)

“Incentive-Based Compensation” means any compensation that is granted, earned, or vested based wholly or in

part upon the attainment of a Financial Reporting Measure.

Ex. 97.1

(h)

Incentive-Based Compensation is deemed to be “Received” in the Company’s fiscal period during which the

Financial Reporting Measure specified in the applicable Incentive-Based Compensation award is attained, even if the payment or
grant of the Incentive-Based Compensation occurs after the end of that period or is subject to additional time-based vesting
requirements.

(i)

“Recovery Period” means the three completed fiscal years immediately preceding the earlier of: (A) the date the

Board, a committee of the Board, or the officer or officers of the Company authorized to take such action if Board action is not
required, concludes, or reasonably should have concluded, that the Company is required to prepare an Accounting Restatement;
or (B) the date a court, regulator, or other legally authorized body directs the Company to prepare an Accounting Restatement. In
addition, if there is a change in the Company’s fiscal year end, the Recovery Period will also include any transition period to the
extent required by Rule 5608.

2.

Recovery of Erroneously Awarded Compensation

(a)

Application of Prior Policy. If the Company is required to prepare an Accounting Restatement and the provisions

of Section 2(b) of this Policy are inapplicable, the Clawback Policy previously adopted by the Board effective April 22, 2016 (the
“Prior Policy”) will apply in accordance with its terms. The Prior Policy will not apply when Section 2(b) of this Policy is
applicable.

(b)

Application of this Policy. Subject to the terms of this Policy and the requirements of Rule 5608, if, on or after the
Effective Date, the Company is required to prepare an Accounting Restatement, the Company will attempt to recover, reasonably
promptly from each Covered Person, any Erroneously Awarded Compensation that was Received by such Covered Person during
the Recovery Period pursuant to Incentive-Based Compensation that is subject to this Policy.

3.

Interpretation and Administration

(a)

Role of the Committee. This Policy will be interpreted by the Committee in a manner that is consistent with Rule

5608 and any other applicable law and will otherwise be interpreted in the business judgment of the Committee. All decisions
and interpretations of the Committee that are consistent with Rule 5608 will be final and binding.

(b)

Compensation Not Subject to this Policy. This Policy does not apply to Incentive-Based Compensation that was

Received before the Effective Date. With respect to any Covered Person, this Policy does not apply to Incentive-Based
Compensation that was Received by such Covered Person before beginning service as an Executive Officer.

(c)

Determination of Means of Recovery. Subject to the requirement that recovery be made reasonably promptly, the
Committee will determine the appropriate means of recovery, which may vary between Covered Persons or based on the nature
of the applicable Incentive-Based Compensation, and which may involve, without limitation, establishing a deferred repayment
plan or setting off against current or future compensation otherwise payable to the Covered Person. Recovery of Erroneously
Awarded Compensation will be made without regard

    2

to income taxes paid by the Covered Person or by the Company on the Covered Person’s behalf in connection with such
Erroneously Awarded Compensation.

Ex. 97.1

(d)

Determination That Recovery is Impracticable. The Company is not required to recover Erroneously Awarded

Compensation if a determination is made by the Committee that either (A) after the Company has made and documented a
reasonable attempt to recover such Erroneously Awarded Compensation, the direct expense paid to a third party to assist in
enforcing this Policy would exceed the amount to be recovered or (B) recovery of such Erroneously Awarded Compensation
would likely cause an otherwise tax-qualified retirement plan, under which benefits are broadly available to employees of the
registrant, to fail to meet the requirements of Section 401(a)(13) or 411(a) of the Internal Revenue Code and regulations
thereunder.

(e)

No Indemnification or Company-Paid Insurance. The Company will not indemnify any Covered Person against
the loss of Erroneously Awarded Compensation and will not pay or reimburse any Covered Person for the purchase of a third-
party insurance policy to fund potential recovery obligations.

(f)

Interaction with Other Clawback Provisions. The Company will be deemed to have recovered Erroneously

Awarded Compensation in accordance with this Policy to the extent the Company actually receives such amounts pursuant to any
other Company policy, program or agreement (including the Prior Policy), pursuant to Section 304 of the Sarbanes-Oxley Act or
otherwise.

(g)

No Limitation on Other Remedies. Nothing in this Policy will be deemed to limit the Company’s right to terminate

employment of any Covered Person, to seek recovery of other compensation paid to a Covered Person, or to pursue other rights
or remedies available to the Company under applicable law.

Adopted by the Board on September 21, 2023.

    3