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Sarepta Therapeutics, Inc.

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FY2021 Annual Report · Sarepta Therapeutics, 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 

For the fiscal year ended December 31, 2021
OR 

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

TRANSITION PERIOD FROM                      TO                     

Commission File Number : 001-14895

Sarepta Therapeutics, Inc.

(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of
incorporation or organization)

215 First Street
Suite 415
Cambridge, MA
(Address of principal executive offices)

93-0797222
(I.R.S. Employer
Identification Number)

02142
(Zip Code)

Registrant’s telephone number, including area code: (617) 274-4000

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

Title of each class
Common Stock, $0.0001 par value

Trading
Symbol(s)
SRPT

Name of each exchange on which registered
The NASDAQ Stock Market LLC
(The 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 15(d) of the Act.  YES ☐ NO ☒ 
Indicate by check mark whether the Registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 
months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  YES ☒ NO ☐
Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of 
this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit such files).  YES ☒ NO ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See 
the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filer

Accelerated filer

☒

☐

Non-accelerated filer

☐

Smaller reporting company

☐

  ☐

Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial 
accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐
Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting 
under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.  ☐
Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  YES ☐ NO ☒
The aggregate market value of the voting and non-voting common equity held by non-affiliates of the Registrant, based on the closing price of the shares of common stock on The 
Nasdaq Global Select Market on June 30, 2021, was approximately $6,206,016,151. 

The number of shares of Registrant’s Common Stock outstanding as of February 24, 2022 was 87,149,589. 

DOCUMENTS INCORPORATED BY REFERENCE

The registrant has incorporated by reference into Part II and Part III of this Annual Report on Form 10-K portions of its definitive Proxy Statement for the 2022 Annual Meeting of 
Stockholders to be filed no later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K.

 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
Sarepta Therapeutics, Inc.
FORM 10-K INDEX

PART I

Item 1. Business
Item 1A. Risk Factors
Item 1B. Unresolved Staff Comments
Item 2. Properties
Item 3. Legal Proceedings
Item 4. Mine Safety Disclosures

PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity 
Securities
Item 6. Reserved
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations
Item 7A. Quantitative and Qualitative Disclosures About Market Risk
Item 8. Financial Statements and Supplementary Data
Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
Item 9A. Controls and Procedures
Item 9B. Other Information
Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

PART III

Item 10. Directors, Executive Officers and Corporate Governance
Item 11. Executive Compensation
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
Item 13. Certain Relationships and Related Transactions, and Director Independence
Item 14. Principal Accounting Fees and Services

PART IV

Item 15. Exhibits, Financial Statement Schedules
Item 16. Form 10-K Summary

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Forward-Looking Information

This Annual Report on Form 10-K, including the “Management’s Discussion and Analysis of Financial Condition and Results of Operations” 
section in Item 7, and other materials accompanying this Annual Report on Form 10-K contain forward-looking statements or incorporate by reference 
forward-looking statements. Statements that are not purely historical are forward-looking statements. Forward-looking statements are often identified by 
words such as “believe,” “anticipate,” “expect,” “intend,” “plan,” “will,” “may,” “estimate,” “could,” “continue,” “ongoing,” “predict,” “potential,” 
“likely,” “seek” and other similar expressions, as well as variations or negatives of these words. These statements address expectations, projections of 
future results of operations or financial condition, or other “forward-looking” information. These statements relate to our future plans, objectives, 
expectations, intentions and financial performance and the assumptions that underlie these statements. These forward-looking statements include, but are 
not limited to:

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the expected or potential impact of the ongoing COVID-19 pandemic on our business, including our commercial sales, ongoing and planned 
clinical trials, manufacturing and operations;

our belief that our proprietary technology platforms and collaborations can be used to develop potential therapeutic candidates to treat a 
broad range of diseases; 

our expectation that our partnerships with manufacturers will support our clinical and commercial manufacturing capacity for our micro-
dystrophin Duchenne muscular dystrophy gene therapy programs and Limb-girdle muscular dystrophy programs, while also acting as a 
manufacturing platform for potential future gene therapy programs, and our belief that our current network of manufacturing partners are 
able to fulfil the requirements of our commercial plan; 

our plan to continue building out our network for commercial distribution in jurisdictions in which our products are approved; 

estimated timelines and milestones for 2022 and beyond, including announcing additional data for SRP-9001 in 2022, completing GMP runs 
for SRP-9003 in 2022, and meeting with the U.S. Food and Drug Administration (“FDA”) in 2022 to discuss a pivotal trial for SRP-9003;

our plan to expand our pipeline through internal research and development and through strategic transactions;  

the timely completion and satisfactory outcome of our post-marketing requirements and commitments, including verification of a clinical 
benefit for our products;  

our plan to evaluate activities and future engagement with the European Medicines Agency (the “EMA”) and other regulatory authorities 
outside of the U.S. on potential next steps for our products and product candidates;

our ability to further secure long-term supply of our commercial products and our product candidates to satisfy our planned commercial, 
early access programs (“EAP”) and clinical needs; 

the possible impact of regulations and regulatory decisions by the FDA and other regulatory agencies on our business, as well as the 
development of our product candidates and our financial and contractual obligations;

the possible impact of any competing products on the commercial success of our products and our product candidates and our ability to 
compete against such products;

our ability to enter into research, development or commercialization alliances with universities, hospitals, independent research centers, non-
profit organizations, pharmaceutical and biotechnology companies and other entities for specific molecular targets or selected disease 
indications and our ability to selectively pursue opportunities to access certain intellectual property rights that complement our internal 
portfolio through license agreements or other arrangements;

our expectations regarding the potential benefits of the partnership, licensing and/or collaboration arrangements and other strategic 
arrangements and transactions we have entered into or may enter into in the future; 

the potential benefits of our technologies and programs, including those with strategic partners;

our plans and ability to file and progress to issue additional patent applications to enhance and protect our new and existing technologies 
and programs;

our estimates regarding how long our currently available cash and cash equivalents will be sufficient to finance our operations and business 
plans and statements about our future capital needs; 

our estimates regarding future revenues, research and development expenses, other expenses, capital requirements and payments to third 
parties;

our expectation regarding the impact of environmental laws and regulations on our business; and 

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•

our beliefs and expectations regarding milestone, royalty or other payments that could be due to third parties under existing agreements.

We undertake no obligation to update any of the forward-looking statements contained in this Annual Report on Form 10-K after the date of this report, 
except as required by law or the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”). We caution readers not to place undue 
reliance on forward-looking statements. Our actual results could differ materially from those discussed in this Annual Report on Form 10-K. The forward-
looking statements contained in this Annual Report on Form 10-K, and other written and oral forward-looking statements made by us from time to time, 
are subject to certain risks and uncertainties that could cause actual results to differ materially from those anticipated in the forward-looking statements, 
including the risks, uncertainties and assumptions identified under the heading “Risk Factors” in this Annual Report on Form 10-K.

Risk Factors Summary

Our business is subject to numerous risks and uncertainties, including those described in Item 1A “Risk Factors”. These risks include, but are not limited to 
the following:

• We are highly dependent on the commercial success of our products in the U.S. and we may not be able to meet expectations with respect to 

sales of our products or attain profitability and positive cash-flow from operations;

•

Even though EXONDYS 51, VYONDYS 53 and AMONDYS 45 have received accelerated approval by the FDA, they face future post-approval 
development and regulatory requirements, which will present additional challenges we will need to successfully navigate;

• We are subject to uncertainty relating to reimbursement policies which, if not favorable, could hinder or prevent the commercial success of our 

products and/or product candidates;

•

Our products may not be widely adopted by patients, payors or healthcare providers, which would adversely impact our potential profitability 
and future business prospects;

• We cannot predict whether historical revenues from eteplirsen, golodirsen and casimersen through our EAP outside the U.S. will continue or 

whether we will be able to continue to distribute our products through our EAP;

• We face intense competition and rapid technological change, which may result in other companies discovering, developing or commercializing 

competitive products;

• We have entered into multiple collaborations and strategic transactions, including our collaboration with Roche, and may seek or engage in 

future collaborations, strategic alliances, acquisitions or licensing agreements that complement or expand our business. We may not be able to 
complete such transactions, and such transactions, if executed, may increase our capital requirements, dilute our stockholders, cause us to incur 
debt or assume contingent liabilities and subject us to other risks;

• We may find it difficult to enroll patients in our clinical trials, which could delay or prevent clinical trials of our product candidates;

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Failures or delays in the commencement or completion of ongoing and planned clinical trials of our product candidates could negatively impact 
commercialization efforts; result in increased costs; and delay, prevent or limit our ability to gain regulatory approval of product candidates and 
to generate revenues and continue our business;

Clinical development is lengthy and uncertain; clinical trials of our novel gene therapy candidates may be delayed, including as a result of the 
COVID-19 pandemic, and certain programs may never advance in the clinic or may be more costly to conduct than we anticipate, any of which 
could have a material adverse impact on our business;

Results from pre-clinical and early‑stage clinical trials may not be indicative of efficacy in late‑stage clinical trials, and pre-clinical and clinical 
trials may fail to demonstrate acceptable levels of safety, efficacy, and quality of our product candidates, which could prevent or significantly 
delay their regulatory approval;

Our product candidates may cause undesirable side effects or have other properties that could delay or prevent regulatory approval of product 
candidates, limit the commercial potential or result in significant negative consequences following any 

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potential marketing approval;

•

If there are significant delays in obtaining or we are unable to obtain or maintain required regulatory approvals, we will not be able to 
commercialize our product candidates in a timely manner or at all, which could impair our ability to generate sufficient revenue and have a 
successful business;

• We are investing significant resources in the development of novel gene therapy product candidates. Only a few gene therapy products have been 
approved in the U.S. and the European Union (“EU”). If we are unable to show the safety and efficacy of these product candidates, experience 
delays in doing so or are unable to successfully commercialize at least one of these drugs, our business would be materially harmed;

•

Because we are developing product candidates for the treatment of certain diseases in which there is little clinical experience and we are using 
new endpoints or methodologies, there is increased risk that the FDA, the EMA or other regulatory authorities may not consider the endpoints of 
our clinical trials to provide clinically meaningful results and that these results may be difficult to analyze;

• We may not be able to advance all of our programs, and we may use our financial and human resources to pursue particular programs and fail to 

capitalize on programs that may be more profitable or for which there is a greater likelihood of success; 

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If we are unable to maintain our agreements with third parties to distribute our products to patients, our results of operations and business could 
be adversely affected;

• We rely on third parties to conduct some aspects of our early stage research and pre-clinical and clinical development. The inadequate 

performance by or loss of any of these third parties could affect the development and commercialization of our product candidate development. 
The third parties we use in the manufacturing process for our products and product candidates may fail to comply with cGMP regulations;

• We currently rely on third parties to manufacture our products and to produce our product candidates; our dependence on these parties, including 
failure on our part to accurately anticipate product demand and timely secure manufacturing capacity to meet commercial, EAP, clinical and pre-
clinical product demand may impair the availability of product to successfully support various programs, including research and development 
and the potential commercialization of additional product candidates in our pipeline;

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Products intended for use in gene therapies are novel, complex and difficult to manufacture. We could experience production problems that result 
in delays in our development or commercialization of gene therapy programs, limit the supply of our products or otherwise harm our business;

Our success, competitive position and future revenue depend in part on our ability and the abilities of our licensors and other collaborators to 
obtain, maintain and defend the patent protection for our products, product candidates, and platform technologies, to preserve our trade secrets, 
and to prevent third parties from infringing on our proprietary rights;

The COVID-19 pandemic has resulted and may continue to result in disruptions to our commercialization, clinical trials, manufacturing and 
other business operations, which could have a material adverse effect on our business, financial condition, operating results, cash flows and 
prospects;

• We have incurred operating losses since our inception and we may not achieve or sustain profitability;

• We will need to raise additional funding, which may not be available on acceptable terms, or at all. Failure to obtain this necessary capital when 

needed may force us to delay, limit or terminate our product development efforts or other operations;

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Our stock price is volatile and may fluctuate due to factors beyond our control;

Our revenues and operating results could fluctuate significantly, which may adversely affect our stock price; and

Our indebtedness resulting from our credit agreement could adversely affect our financial condition or restrict our future operations.

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Item 1. Business.

Overview

PART I

We are a commercial-stage biopharmaceutical company focused on helping patients through the discovery and development of unique RNA-

targeted therapeutics, gene therapy and other genetic therapeutic modalities for the treatment of rare diseases. Applying our proprietary, highly-
differentiated and innovative technologies, and through collaborations with our strategic partners, we are developing potential therapeutic candidates for a 
broad range of diseases and disorders, including Duchenne muscular dystrophy (“Duchenne”), Limb-girdle muscular dystrophies (“LGMDs”) and other 
neuromuscular and central nervous system (“CNS”) related disorders.

               We commercialize three products, all of which were granted accelerated approval by the FDA: 

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EXONDYS 51 (eteplirsen) Injection (“EXONDYS 51”), approved by the FDA on September 19, 2016, is indicated for the treatment of 
Duchenne in patients who have a confirmed mutation of the dystrophin gene that is amenable to exon 51 skipping. EXONDYS 51 uses our 
phosphorodiamidate morpholino oligomer (“PMO”) chemistry and exon-skipping technology to skip exon 51 of the dystrophin gene. 

VYONDYS 53 (golodirsen) Injection (“VYONDYS 53”), approved by the FDA on December 12, 2019, is indicated for the treatment of 
Duchenne in patients who have a confirmed mutation of the dystrophin gene that is amenable to exon 53 skipping. VYONDYS 53 uses our 
PMO chemistry and exon-skipping technology to skip exon 53 of the dystrophin gene. 

AMONDYS 45 (casimersen) Injection (“AMONDYS 45”), approved by the FDA on February 25, 2021, is indicated for the treatment of 
Duchenne in patients who have a confirmed mutation of the dystrophin gene that is amenable to exon 45 skipping. AMONDYS 45 uses our 
PMO chemistry and exon-skipping technology to skip exon 45 of the dystrophin gene. 

Exon skipping is intended to promote the production of an internally truncated but functional dystrophin protein. The original PMO structure and 

variations of this structure that are so-called PMO-based (collectively “PMO-based”) are central to our proprietary chemistry platform. PMO technologies 
can be used to selectively up-regulate or down-regulate the production of a target protein through pre-mRNA splice alteration. PMO-based compounds 
have the potential to be designed to create more, less, or none of certain proteins, or produce analogues of endogenous proteins. This technology can be 
used to correct disease-causing genetic errors by inducing the targeted expression of novel proteins.

The PMO chemistry platform is highly adaptable, and we have developed next-generation PMO-based chemistries for advancing RNA-targeted 

therapeutics. These next-generation chemistries are specifically designed to enhance tissue targeting, intracellular delivery, target selectivity and drug 
potency. One of these novel technologies is based on cell-penetrating peptide-conjugated PMO (“PPMO”). The PPMO features covalent attachment of a 
cell-penetrating peptide to a PMO with the goal of enhanced delivery into the cell. Our most advanced PPMO product candidate is SRP-5051, which is 
designed to treat Duchenne in patients with genetic mutations amenable to exon 51 skipping. 

As part of our multifaceted approach to Duchenne, we are also developing gene therapy technologies to treat Duchenne. We are clinically 

developing a product candidate, SRP-9001, that aims to express a smaller but still functional version of dystrophin (“micro-dystrophin”). We use a unique 
adeno-associated virus (“AAV”) vector called AAVrh.74 to transport the transgene – the genetic material that will make the protein of interest – to the 
target cells. Micro-dystrophin is used because naturally-occurring dystrophin is too large to fit in an AAV. 

We are also developing gene therapy programs for various forms of LGMDs. Our most advanced LGMD product candidate, SRP-9003, is 

designed to transfer a gene that codes for and restores beta-sarcoglycan protein with the goal of restoring the dystrophin associated protein complex. SRP-
9003 utilizes the AAVrh.74 vector, the same vector used in SRP-9001. 

Our pipeline includes more than 40 programs at various stages of discovery, pre-clinical and clinical development, reflecting our aspiration to 

apply our multifaceted approach and expertise in precision genetic medicine to make a profound difference in the lives of patients suffering from rare 
diseases.

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Objectives and Business Strategy

We believe that our proprietary technology platforms and collaborations can be used to develop novel pharmaceutical products to treat a broad 

range of diseases and address key currently-unmet medical needs. We intend to leverage our technology platforms, organizational capabilities, 
collaborations and resources to lead the field of precision genetic medicines, including the treatment of rare, neuromuscular and other diseases, with a 
diversified portfolio of product candidates. In pursuit of this objective, we intend to focus on the following activities:

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continuing to build our gene therapy engine, including developing gene therapy product candidates, operationalizing our manufacturing 
strategy and furthering our commercial capabilities in preparation for potential regulatory approvals;

advancing our RNA technologies (e.g., PMO and PPMO), launching potential approved products and supporting commercialization of 
approved products;

investing in next-generation precision medicine through internal research, strategic partnerships, collaborations and other potential 
opportunities; and  

continuing to nurture our culture, which is based on strong patient focus, bias to action, a self-starter mentality, smart and appropriate risk-
taking and high ethics.

Core Therapeutic Areas

Duchenne: We primarily focus on rapidly advancing the development of our potentially disease-modifying pipeline of exon-skipping, gene 
therapy and gene editing product candidates targeting Duchenne. Duchenne is a rare X-linked recessive genetic disorder affecting children (primarily 
males) that is characterized by progressive muscle deterioration and weakness. It is the most common type of muscular dystrophy. Duchenne is caused by 
an absence of dystrophin, a protein that protects muscle cells. The absence of dystrophin in muscle cells leads to significant cell damage and ultimately 
causes muscle cell death and fibrotic replacement. In the absence of dystrophin protein, affected individuals generally experience the following symptoms, 
although disease severity and life expectancy vary:

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muscle damage characterized by inflammation, fibrosis and loss of myofibers beginning at an early age;

muscle weakness and progressive loss of muscle function beginning in the first few years of life;

decline of ambulation and respiratory function after the age of seven;

total loss of ambulation in the pre-teenage or early teenage years;

progressive loss of upper extremity function during mid- to late-teens; and

respiratory and/or cardiac failure, resulting in death before the age of 30.

LGMDs are autosomal recessive, monogenic, rare neuromuscular diseases caused by missense and deletion mutations. These diseases affect 

males and females equally. Some types of LGMDs affect skeletal muscle and cardiac muscle. More severe forms of LGMDs mimic Duchenne. LGMDs as 
a class affect an estimated range of approximately 1 in every 14,500 to 1 in every 123,000 individuals. Currently, there are no available treatment options 
for LGMDs.

Charcot-Marie-Tooth (“CMT”) Disease is a group of hereditary, degenerative nerve diseases that are caused by mutations in genes that produce 

proteins involved in the structure and function of either the peripheral nerve axon or the myelin sheath. CMT can cause degeneration of motor skills, 
resulting in muscle weakness, and limiting patients’ ability to walk or use their hands, and in some cases, can cause degeneration of sensory nerves, 
resulting in a reduced ability to feel heat, cold, and pain. CMT affects approximately 1 in every 2,500 individuals, while CMT type 1A, which is most often 
caused by an extra copy of the PMP22 gene, affects approximately 50,000 patients in the U.S. Most patients are diagnosed at infancy, while other patients 
develop symptoms at adolescence. Currently, there are no available treatment options. 

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Our Commercial Products

EXONDYS 51, our first commercial product, approved by the FDA on September 19, 2016, is indicated for the treatment of Duchenne in patients 

who have a confirmed mutation of the dystrophin gene that is amenable to exon 51 skipping. EXONDYS 51 uses our PMO chemistry and exon-skipping 
technology to skip exon 51 of the dystrophin gene. PMO-based compounds are synthetic compounds that bind to complementary sequences of RNA by 
standard Watson-Crick nucleobase pairing. The two key structural differences between PMO-based compounds and naturally occurring RNA are that the 
PMO nucleobases are bound to synthetic morpholino rings instead of ribose rings, and the morpholino rings are linked by phosphorodiamidate groups 
instead of phosphodiester groups. Replacement of the negatively charged phosphodiester in RNA with the uncharged phosphorodiamidate group in PMO 
eliminates linkage ionization at physiological pH. Due to these modifications, PMO-based compounds are resistant to degradation by plasma and 
intracellular enzymes. Unlike the RNA-targeted technologies such as siRNAs and DNA gapmers, PMO-based compounds operate by steric blockade rather 
than by cellular enzymatic degradation to achieve their biological effects. Thus, PMOs use a fundamentally different mechanism from other RNA-targeted 
technologies.

EXONDYS 51 targets the most frequent series of mutations that cause Duchenne. Approximately 13% of Duchenne patients are amenable to 

exon 51 skipping.  

We are in the process of conducting various EXONDYS 51 clinical trials, including studies that are required to comply with our post-marketing 

FDA requirements and commitments to verify and describe the clinical benefit of EXONDYS 51. 

VYONDYS 53, our second commercial product, approved by the FDA on December 12, 2019, is indicated for the treatment of Duchenne in 

patients who have a confirmed mutation of the dystrophin gene that is amenable to exon 53 skipping. VYONDYS 53 uses our PMO chemistry and exon-
skipping technology to skip exon 53 of the dystrophin gene. VYONDYS 53 has the potential to offer treatment to up to 8% of Duchenne patients who are 
amenable to exon 53 skipping.

We are in the process of conducting various VYONDYS 53 clinical trials, including studies that are required to comply with our post-marketing 

FDA requirements and commitments to verify and describe the clinical benefit of VYONDYS 53. 

AMONDYS 45, our third commercial product, approved by the FDA on February 25, 2021, is indicated for the treatment of Duchenne in patients 

who have a confirmed mutation of the dystrophin gene that is amenable to exon 45 skipping. AMONDYS 45 uses our PMO chemistry and exon-skipping 
technology to skip exon 45 of the dystrophin gene. AMONDYS 45 has the potential to offer treatment to up to 8% of Duchenne patients who are amenable 
to exon 45 skipping.

We are in the process of conducting various AMONDYS 45 clinical trials, including studies that are required to comply with our post-marketing 

FDA requirements and commitments to verify and describe the clinical benefit of AMONDYS 45. 

For the years ended December 31, 2021, 2020 and 2019, the Company recorded net revenues of $612.4 million, $455.9 million and $380.8 

million, respectively, related to the sale of our products.

Our Pipeline – Key Programs      

SRP-5051 uses our next-generation chemistry platform, PPMO, and our exon-skipping technology to skip exon 51 of the dystrophin gene. The 

PPMO technology features covalent attachment of a cell-penetrating peptide to a PMO with the goal of enhanced delivery into the cell. In pre-clinical 
research, our proprietary class of PPMO compounds demonstrated an increase in dystrophin production and a more durable response compared to PMO. In 
addition, PPMO treatment in non-human primates results in high levels of exon-skipping in skeletal, cardiac and smooth muscle tissues. Pre-clinical trials 
also indicate that PPMOs may require less frequent dosing than PMOs, and that PPMOs could potentially be tailored to reach other organs beyond muscle.

In the fourth quarter of 2017, we commenced a first-in-human, single ascending dose, trial for the treatment of Duchenne using SRP-5051 in 

patients who are amenable to exon 51 skipping. In 2019, we commenced a multiple ascending dose study for the treatment of Duchenne with SRP-5051 in 
patients who are amenable to exon 51 skipping (“Study 5051-201”). In December 2020, we announced an interim analysis on clinical results from the 10 
mg/kg and 20 mg/kg dose cohorts of Part A of Study 5051-201. In May 2021, we announced results from the 30 mg/kg cohort of Part A of Study 5051-
201. We initiated Part B of Study 5051-201 in the fourth quarter of 2021 and are currently enrolling patients.

SRP-9001 (Duchenne, micro-dystrophin gene therapy program) aims to express micro-dystrophin – a smaller but still functional version of 

dystrophin.  A unique, engineered micro-dystrophin is used because naturally-occurring dystrophin is too large to fit in an AAV vector. SRP-9001 employs 
the AAVrh.74 vector, which is designed to be systemically and robustly delivered to skeletal, diaphragm and cardiac muscle without promiscuously 
crossing the blood brain barrier, which we believe makes it a strong candidate to treat peripheral neuromuscular diseases. An MHCK7 promoter was 
chosen for its ability to robustly express in the heart, 

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which is critically important for patients with Duchenne, who typically die from pulmonary or cardiac complications. Lastly, the transgene was designed to 
maintain spectrin-like repeats 2 and 3, which has been reported to be critical to maintaining muscle force.

In the fourth quarter of 2017, an investigational new drug (“IND”) application for the micro-dystrophin gene therapy program was cleared by the 

FDA, and a Phase 1/2a clinical trial in individuals with Duchenne was initiated (Study 101). In October 2018, Nationwide Children’s Hospital 
(“Nationwide”) presented updated results from Study 101 in four individuals with Duchenne enrolled in the trial. In March 2019, we presented nine-month 
functional and CK data from baseline from these four individuals, and twelve-month CK data from baseline from one of these individuals. In the fourth 
quarter of 2018, we commenced a randomized, double-blind, placebo-controlled trial of SRP-9001 with the goal to establish the functional benefits of 
micro-dystrophin expressions (Study 102). In January 2021, we released top-line results for Part 1 of Study 102 (the 48-week assessment of the 41 
participants) and interim expression results from Part 2 of Study 102 (the crossover phase). We announced topline results for Part 2 of Study 102 in January 
2022. In May 2021, we announced 12-week expression and safety results from the first 11 participants enrolled in Study 103, an open-label study 
evaluating the safety and expression of commercially representative material for SRP-9001 (Study 103). In October 2021, we announced functional data 
from the first 11 patients and tolerability data for all 32 patients enrolled in Study 103. We also initiated our pivotal trial of SRP-9001 for the treatment of 
Duchenne (Study 301) in October 2021 and are currently enrolling patients. We expect to announce additional data for SRP-9001 in 2022.

SRP-9003 (LGMD, gene therapy program). We are developing gene therapy programs for various types of LGMDs. Our LGMD programs use 

the AAVrh.74 vector, the same vector used in the micro-dystrophin gene therapy program, to transfect a restorative gene. The most advanced of our LGMD 
product candidates, SRP-9003, aims to treat LGMD2E, also known as beta-sarcoglycanopathy, a severe and debilitating form of LGMD characterized by 
progressive muscle fiber loss, inflammation and muscle fiber replacement with fat and fibrotic tissue. SRP-9003 is designed to transfect a gene that codes 
for and restores beta-sarcoglycan protein with the goal of restoring the dystrophin associated protein complex.  SRP-9003 has generated positive pre-
clinical safety and efficacy data utilizing the AAVrh.74 vector.  

A Phase 1/2a trial of SRP-9003 was commenced in the fourth quarter of 2018. In February 2019, we announced two-month biopsy data from the 

first three-patient cohort dosed in the SRP-9003 trial, and in October 2019, we announced nine-month functional data from these three patients.  In June 
2020, we announced safety and expression results from three clinical trial participants in the high-dose cohort measured at 60 days, and one-year functional 
data from three clinical trial participants in the high-dose cohort, and eighteen-month functional data from three clinical trial participants in the low-dose 
cohort.  We also announced one-year functional data in the high-dose cohort and two-year functional data in the low-dose cohort in March 2021. We expect 
to complete GMP runs for SRP-9003 in 2022. We also plan to meet with the FDA in 2022 to discuss our pivotal trial.

-8-

 
The chart below summarizes the status of our programs, including those with our strategic partners:

-9-

 
 
 
Manufacturing, Supply and Distribution

We have developed proprietary state-of-the-art Chemistry, Manufacturing and Controls (“CMC”) and manufacturing capabilities that allow 

manufacturing and testing of our products and product candidates to support both clinical development as well as commercialization. We continue to refine 
and optimize our manufacturing processes. We have entered into certain manufacturing and supply arrangements with third-party suppliers which will in 
part utilize these capabilities to support production of certain of our product candidates and their components. In 2017, we opened a facility in Andover, 
Massachusetts, which significantly enhanced our research and development manufacturing capabilities. However, we currently do not have internal large-
scale Good Manufacturing Practices (“GMP”) manufacturing capabilities to produce our products and product candidates for commercial and/or clinical 
use. For our current and future manufacturing needs, we have entered into supply agreements with specialized contract manufacturing organizations (each a 
“CMO”) to produce custom raw materials, the active pharmaceutical ingredients (“APIs”), drug product and finished goods for our products and product 
candidates for both commercial and clinical use. All of our CMO partners have extensive technical expertise, GMP experience and experience 
manufacturing our specific technology.

For our commercial Duchenne program, we have worked with our existing CMOs to increase product capacity from mid-scale to large-scale. 

While there are a limited number of companies that can produce raw materials and APIs in the quantities and with the quality and purity that we require for 
our commercial products, based on our diligence to date, we believe our current network of CMOs are able to fulfill these requirements, and are capable of 
expanding capacity as needed. Additionally, we have, and will continue to evaluate further relationships with additional suppliers to increase overall 
capacity as well as further reduce risks associated with reliance on a limited number of suppliers for manufacturing.  

Our commercial products are distributed in the U.S. through a limited network of home infusion specialty pharmacy providers that deliver the 

medication to patients and a specialty distributor that distributes our products to hospitals and hospital outpatient clinics. With respect to the pre-
commercial distribution of our products to patients outside of the U.S., we have contracted with third party distributors and service providers to distribute 
our products in certain countries through our EAPs. We plan to continue building out our network for commercial distribution in jurisdictions in which our 
products are approved.

Our gene therapy manufacturing capabilities have been greatly enhanced through partnerships with Thermo Fisher Scientific Inc. (“Thermo”), 

Catalent, Inc. (“Catalent”) and Aldevron LLC (“Aldevron”). We have adopted a hybrid development and manufacturing strategy in which we are building 
internal manufacturing expertise relative to all aspects of AAV-based manufacturing, including gene therapy and gene editing supply, while closely 
partnering with first-in-class manufacturing partners to expedite development and commercialization of our gene therapy programs. We expect that our 
partnerships with Thermo and Catalent will support our clinical and commercial manufacturing capacity for our micro-dystrophin Duchenne program and 
LGMD programs, while also acting as a manufacturing platform for potential future gene therapy programs. The collaboration integrates process 
development, clinical production and testing, and commercial manufacturing. Aldevron is expected to provide GMP-grade plasmid for our SRP-9001 
micro-dystrophin Duchenne program and LGMD programs, as well as plasmid source material for future gene therapy programs, such as CMT and other 
neuromuscular and CNS related disorders.

Manufacturers and suppliers of our commercial products and product candidates are subject to the FDA’s current GMP (“cGMP”) requirements 
and other rules and regulations prescribed by foreign regulatory authorities. We depend on our third-party partners for continued compliance with cGMP 
requirements and applicable foreign standards.

Material Agreements

We believe that our RNA-targeted and gene therapy technologies could be broadly applicable for the potential development of pharmaceutical 

products in many therapeutic areas. To enhance and further exploit our core technologies, we have and may continue to enter into research, development or 
commercialization alliances with universities, hospitals, independent research centers, non-profit organizations, pharmaceutical and biotechnology 
companies and other entities for new technologies, including for specific molecular targets or selected disease indications. We may also selectively pursue 
opportunities to access certain intellectual property rights that complement our internal portfolio through license agreements or other arrangements.

Roche

License, Collaboration, and Option Agreement 

On December 21, 2019, we entered into a License, Collaboration, and Option Agreement (the “Collaboration Agreement”) with F. Hoffman-La 

Roche Ltd (“Roche”) pursuant to which we granted Roche an exclusive license under certain of our intellectual property rights to develop, manufacture, 
and commercialize SRP-9001 in all countries outside of the U.S. We retained all rights to SRP-9001 in the U.S. The transaction closed on February 4, 
2020. We have entered into Amendments 1 through 8 to the Collaboration Agreement on: October 23, 2020, October 28, 2020, February 4, 2021, June 23, 
2021, August 31, 2021, November 30, 2021, January 5, 2022, and January 28, 2022, respectively.

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Also, under the terms of the Collaboration Agreement, Roche granted us a license to use certain of its intellectual property rights to perform 
development activities worldwide under a joint global development plan, commercialize SRP-9001 in the U.S., and perform certain manufacturing and 
medical affairs activities worldwide. Such license is non-exclusive under Roche’s background intellectual property rights, exclusive in the U.S. under 
intellectual property rights developed by Roche under the Collaboration Agreement, and non-exclusive outside the U.S. under intellectual property rights 
developed by Roche under the Collaboration Agreement. 

We intend to manufacture and supply all clinical and, upon approval in the relevant market, commercial supply of SRP-9001.

Roche Options and Negotiation Rights

Pursuant to the Collaboration Agreement, we granted Roche an exclusive option to obtain an exclusive license to develop, manufacture and 

commercialize the following products outside of the U.S.: (i) certain exon-skipping products that target the dystrophin gene to induce exon skipping, 
including eteplirsen, golodirsen, casimersen and SRP-5051; (ii) certain gene therapy products other than SRP-9001 that encode and directly express 
dystrophin or a derivative thereof; and (iii) certain gene-editing products that modify, repair, or activate an endogenous dysfunctional dystrophin gene. The 
products subject to Roche’s options are collectively referred to as the “Option Products.” Upon option exercise, the Option Product that is the subject of the 
option exercise will be included under the Collaboration Agreement as a product licensed to Roche subject to similar obligations, including with respect to 
development, manufacturing, commercialization, and cost-sharing as those that apply to SRP-9001. 

Pursuant to the Collaboration Agreement, Roche has a right of first negotiation if we seek to grant a third-party license to commercialize SRP-

9001 in the U.S. Roche had a similar right of first negotiation with respect to our LGMDs products, but such right has expired. 

Exclusivity 

Other than under the Collaboration Agreement, Roche may not perform any clinical trials for, or commercialize, any gene therapy product, gene-

editing product, or antisense oligonucleotide for Duchenne for a period of five years following the execution of the Collaboration Agreement. The 
exclusivity period for one or more types of products may be extended if Roche exercises its option with respect to one or more exon-skipping products, 
gene therapy products, or gene-editing products, in each case, for a period of five years from the time of option exercise. 

Development

The parties will use commercially reasonable efforts to conduct development activities with respect to SRP-9001 under the Collaboration 

Agreement pursuant to agreed-upon development plans. Subject to certain exceptions, we will perform all development activities directed to obtaining and 
maintaining regulatory approvals for SRP-9001 in the U.S. and the EU, as set forth in a joint global development plan. Subject to certain exceptions, the 
parties will share the costs of the development activities under such joint global development plan. Roche will have sole responsibility to perform all 
development activities set forth in a territory-specific development plan for SRP-9001, including additional activities not set forth in the joint global 
development plan that are specifically directed to obtaining and maintaining regulatory approvals for SRP-9001 outside of the U.S. Roche will be solely 
responsible for costs arising from the territory-specific development plan for SRP-9001.

Governance

Governing committees will facilitate collaboration between the parties with respect to development, manufacturing, medical affairs, intellectual 

property protection, and commercialization of SRP-9001 and any other licensed products. 

Financial Terms 

In consideration for the rights that we granted and for prepaid funding for development activities, in February 2020, Roche and Roche Finance 

Ltd, an affiliate of Roche (“Roche Finance”), together paid us an up-front payment of approximately $1.2 billion, comprised of $750.0 million in cash from 
Roche and approximately $400.0 million from Roche Finance in exchange for 2,522,227 shares of our common stock, priced at $158.59 per share under 
the Stock Purchase Agreement described below. Additionally, we are eligible to receive up to $1.7 billion in regulatory and sales milestone payments with 
respect to SRP-9001. 

In addition, the Collaboration Agreement provides that Roche will pay us royalties on net sales of SRP-9001, at a royalty rate anticipated to be in 

the mid-teens.

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In the event that Roche chooses to exercise its option with respect to one or more Option Products, we will be paid an option exercise fee upon 
each such exercise and the Option Products that are the subject of the option exercise will be subject to separate milestone payments and royalties on sales 
of such Option Product.

Term; Termination 

Unless earlier terminated as described below, the Collaboration Agreement will continue with respect to SRP-9001 or any Option Product for 

which Roche has exercised its option, on a product-by-product and country-by-country basis, until the end of the royalty term for such product in such 
country. The royalty term expires on the later of (a) twelve years after first commercial sale in such country, (b) loss of regulatory exclusivity in such 
country and (c) expiration of all valid claims of specific licensed patents in such country.

Either party may terminate the Collaboration Agreement for the other party’s material breach if such breach is not cured within a specified cure 

period. 

If Roche breaches its development or commercialization diligence obligations with respect to a licensed product or fails to develop or 
commercialize a particular licensed product in a particular region for a specified period of time, then we may terminate the Collaboration Agreement with 
respect to such licensed products in such regions. 

Roche may terminate the Collaboration Agreement if we fail to supply SRP-9001 to Roche in accordance with the terms of the Collaboration 

Agreement and the supply agreements to be entered into between the parties. Roche may also terminate the Collaboration Agreement for convenience with 
extended advance notice, in its entirety or on a licensed product-by-licensed product and region-by-region basis. 

The foregoing description of the terms of the Collaboration Agreement is not complete and is qualified in its entirety by reference to the text of 

the Collaboration Agreement, a copy of which is filed as an exhibit to this Annual Report.

Stock Purchase Agreement 

On December 21, 2019, pursuant to the Collaboration Agreement, we entered into a Stock Purchase Agreement with Roche Finance (the “Stock 

Purchase Agreement”) pursuant to which, in February 2020, we issued and sold 2,522,227 shares (the “Shares”) of common stock to Roche Finance in a 
private placement for an aggregate purchase price of approximately $400.0 million, or $158.59 per share, with a fair value of $316.3 million. 

The Stock Purchase Agreement contains other customary terms and conditions, including mutual representations, warranties, and covenants.

Myonexus

On May 3, 2018, we purchased from Myonexus, a privately-held Delaware corporation, a warrant to purchase common stock of Myonexus (the 
“Warrant”), which, in combination with amendments to the Myonexus certificate of incorporation, provided us with an exclusive option (the “Option”) to 
acquire Myonexus. In consideration for the Warrant, we made an up-front payment of $60.0 million to Myonexus. On February 27, 2019, we announced 
that we exercised the exclusive option to acquire Myonexus and, on April 4, 2019, we paid the Myonexus shareholders approximately $173.8 million and 
completed the acquisition of Myonexus.  We are required to make contingent payments to the former shareholders of Myonexus upon achievement of a 
threshold amount of net sales of Myonexus products and the receipt and subsequent sale of a Priority Review Voucher (“PRV”) with respect to a Myonexus 
product. 

BioMarin

License Agreement

On July 17, 2017, we executed a License Agreement (as amended on April 14, 2019 and November 17, 2021, the “License Agreement”) with 

BioMarin Leiden Holding BV, BioMarin Nederlands BV and BioMarin Technologies BV (collectively, “BioMarin”), pursuant to which BioMarin granted 
us a royalty-bearing, worldwide license under patent rights (“Licensed Patents”) and know-how (“Licensed Know-How”) controlled by BioMarin with 
respect to BioMarin’s Duchenne program, which are potentially necessary or useful for the treatment of Duchenne, to practice and exploit the Licensed 
Patents and Licensed Know-How in all fields of use and for all purposes, including to develop and commercialize antisense oligonucleotide products that 
target one or more exons of the dystrophin gene to induce exon skipping, including eteplirsen, golodirsen and casimersen (collectively, the “Products”). 

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The license granted to Sarepta by BioMarin is co-exclusive with BioMarin, with respect to the Licensed Patents, and is non-exclusive with 

respect to Licensed Know-How. Pursuant to the amendment to the License Agreement dated November 17, 2021 (“2021 Amendment”), BioMarin 
exercised its right to convert the exclusive license under the Licensed Patents to the current co-exclusive license.  

Under the terms of the License Agreement, we were required to pay BioMarin an up-front payment of $15.0 million. Pursuant to the 2021 

Amendment, BioMarin is eligible to receive up to $20.0 million from us per dystrophin gene exon (other than exon 51) targeted by one or more Products in 
specified regulatory milestones, as well as an additional $10.0 million milestone, payable following the regulatory approval of eteplirsen by the EMA. 
BioMarin is also eligible to receive through June 30, 2022 royalties segmented by specified geographic markets, in some jurisdictions dependent on the 
existence of a patent, ranging from 4% to 8% of net sales on a product-by-product and country-by-country basis. Beginning July 1, 2022, pursuant to the 
2021 Amendment, BioMarin is eligible to receive royalties of 4% in the U.S. and 5% outside the U.S. of net sales of Products covered by a Licensed Patent 
on a product-by-product and country-by-country basis.  

Milestones and royalties are payable with respect to eteplirsen (an exon 51 skipping Product), golodirsen (an exon 53 skipping Product), 

casimersen (an exon 45 skipping Product) through June 30, 2022. Beginning July 1, 2022, pursuant to the 2021 Amendment, milestones and royalties are 
payable only with respect to Products covered by a Licensed Patent. Beginning July 1, 2022, pursuant to the 2021 Amendment, the royalty term applicable 
to Products covered by a Licensed Patent will expire upon March 31, 2024 in the U.S. and December 31, 2024 outside the U.S.  The royalties for all 
Products covered by a Licensed Patent are subject to reductions, including for generic competition and, under specified conditions, for a specified portion 
of payments that we may become required to pay under third-party license agreements, subject to a maximum royalty reduction.

Unless earlier terminated, the License Agreement will expire upon the expiration of the last-to-expire royalty term. Either party may terminate 

the License Agreement in the event of the other party’s uncured material breach. BioMarin may also terminate the License Agreement on a Licensed 
Patent-by-Licensed Patent basis under specified circumstances relating to patent challenges by us.

Settlement Agreement

On July 17, 2017, Sarepta and The University of Western Australia (“UWA”) on the one hand, and the BioMarin Parties and Academisch 

Ziekenhuis Leiden (“AZL”) on the other hand (collectively, the “Settlement Parties”), executed a Settlement Agreement pursuant to which all legal actions 
in the U.S. and certain legal actions in Europe (the “Actions”) would be stopped or withdrawn as between the Settlement Parties. Specifically, the terms of 
the Settlement Agreement required that existing efforts pursuing ongoing litigation and opposition proceedings would be stopped as between the Settlement 
Parties, and the Settlement Parties would cooperate to withdraw the Actions before the European Patent Office (except for actions involving third parties), 
the U.S. Patent and Trademark Office (“USPTO”), the U.S. Court of Appeals for the Federal Circuit and the High Court of Justice of England and Wales, 
except for the cross-appeal of the Interlocutory Decision of the Opposition Division dated April 15, 2013 of the European Patent Office of EP 1619249B1 
(“EP ‘249 Appeal”) in which Sarepta agreed to withdraw its appeal and BioMarin/AZL agreed to continue with its appeal with Sarepta having oversight of 
the continued appeal by BioMarin/AZL. 

Additionally, under the terms of the Settlement Agreement, the Settlement Parties agreed to release each other and the customers, end-users, 
agents, suppliers, distributors, resellers, contractors, consultants, services and partners of Sarepta or BioMarin (as applicable) from claims and damages 
related to (i) the patent rights controlled by the releasing party that are involved in the Actions, (ii) with respect to Sarepta and UWA, its patent rights 
related to the patent rights involved in the Actions, and (iii) with respect to BioMarin and AZL, all of the Licensed Patents and Licensed Know-How. 

Under the terms of the Settlement Agreement, Sarepta made an up-front payment of $20.0 million to BioMarin.

University of Western Australia

In April 2013, we entered into an agreement with UWA under which an existing exclusive license agreement between the two parties was 

amended and restated and, in June 2016, we entered into the first amendment to the license agreement (the “UWA License Agreement”). The UWA License 
Agreement grants us specific rights to compounds for the treatment of Duchenne by inducing exon skipping. EXONDYS 51, VYONDYS 53 and 
AMONDYS 45 fall under the scope of the license agreement. Under the UWA License Agreement, we are required to make payments of up to $6.0 million 
in the aggregate to UWA based on the successful achievement of certain development and regulatory milestones relating to EXONDYS 51, VYONDYS 53, 
AMONDYS 45 and up to three additional product candidates. As of December 31, 2021, $4.2 million of the $6.0 million development and regulatory 
milestone payments had been made. We are also obligated to make payments to UWA of up to $20.0 million upon the achievement of certain 

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sales milestones. Additionally, we are required to pay a low-single-digit percentage royalty on net sales of products covered by issued patents licensed from 
UWA during the term of the UWA License Agreement. 

Currently, the latest date on which an issued patent covered by the UWA License Agreement expires is November 2030 (excluding any patent 

term extension, supplemental protection certificate or pediatric extensions that may be available); however, patents granted from pending patent 
applications could result in a later expiration date.

Key Strategic Alliances

In connection with our multi-front battle against Duchenne and other rare neuromuscular diseases, we have entered into multiple partnering 

opportunities, including the ones described below. We believe that these collaborations, taken along with our own programs, represent a comprehensive 
approach to treating these rare neuromuscular diseases.   

Nationwide Children’s Hospital

In December 2015, we entered into an exclusive license agreement with Nationwide to acquire exclusive rights to its GALGT2 gene therapy 

program for neuromuscular related disorders. 

In addition, in December 2016, we entered into an exclusive option agreement with Nationwide to acquire exclusive rights to their micro-

dystrophin gene therapy program as well as a sponsored research agreement to conduct pre-IND research and conduct the first clinical trial with the lead 
micro-dystrophin gene therapy. In October 2018, we exercised our exclusive license option and an option under the sponsored research agreement and 
entered into an exclusive license agreement with Nationwide to acquire exclusive rights to its micro-dystrophin gene therapy program, which provides us 
with exclusive rights to commercialize SRP-9001. 

Furthermore, in October 2018, we entered into an exclusive option agreement with Nationwide with respect to exclusive rights to its NT-3 gene 

therapy program for the treatment of certain CMT neuropathy subtypes, including CMT Type 1A.  The option agreement contains pre-determined 
economic terms for the exclusive license to be entered into upon us exercising our option.   

In addition, in March 2019, we entered into an exclusive option agreement with Nationwide with respect to exclusive rights to its calpain-3 gene 

therapy program for the treatment of LGMD Type 2A.   In July 2021, we exercised our option and entered into an exclusive license agreement with 
Nationwide to acquire exclusive rights to its calpain-3 gene therapy program for the treatment of LGMD Type 2A.

Duke University

In October 2017, we entered into a sponsored research and exclusive option agreement with Duke University, granting us an exclusive option to 

an exclusive license to intellectual property and technology related to certain CRISPR/Cas9 technology developed in the laboratory of Charles A. 
Gersbach, Ph.D. The underlying premise of Dr. Gersbach’s approach is to restore dystrophin expression by removing or “excising” exons from the 
dystrophin gene. This includes a strategy to excise exons potentially enabling treatment for a majority of the Duchenne patient population. 

Genethon

In May 2017, we entered into a sponsored research agreement with Genethon, under which we have been collaborating with Genethon on the 
pre-clinical development of its micro-dystrophin gene therapy products for the treatment of Duchenne. In November 2019, we entered into a license and 
collaboration agreement with Genethon, under which we will collaborate and share costs with Genethon on the clinical development of such products for 
the treatment of Duchenne. Under such agreement, we received the exclusive right to commercialize such products in the majority of the world (primarily 
excluding the EU).  For the rights we received under such agreement, we made an up-front payment of $28.0 million; may be required to pay up to $236.3 
million in development, regulatory and sales milestones; and upon commercialization, will be required to make tiered royalty payments based on net sales 
of licensed products.

StrideBio

On November 13, 2019, we entered into a collaboration and license agreement with StrideBio, Inc. (“StrideBio”), a leading developer of novel 

AAV capsids, to develop in vivo AAV-based therapies for up to eight CNS and neuromuscular targets. Pursuant to the agreement, we were granted an 
exclusive license on selected targets to leverage StrideBio’s capsid technology intended to enhance specific tropism to tissues of interest and evade 
neutralizing antibodies. StrideBio will conduct all IND enabling research, development and manufacturing for the first four CNS targets, which are MECP2 
(Rett syndrome), SCN1A (Dravet syndrome), UBE3A (Angelman syndrome), and NPC1 (Niemann-Pick). 

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Under the terms of the agreement, StrideBio will be responsible for AAV capsid development, non-clinical development and manufacturing of 

preclinical candidates to be selected for advancement into clinical studies. The parties will also share early clinical development activities for certain 
selected targets, with Sarepta responsible for late stage development and commercialization of all targets. StrideBio received up-front consideration of 
$46.9 million, of which $29.4 million was in the form of Sarepta common stock and the balance in cash. In addition, StrideBio will receive significant 
future development, regulatory and commercial milestones upon the achievement of specified milestone events for each of the four programs. StrideBio 
will also receive royalties on worldwide net sales of any commercial products developed through the collaboration. In addition, in March 2021, in 
accordance with the commitment made under the agreement, Sarepta invested in StrideBio’s Series B financing round.  

Patents and Proprietary Rights

Our success depends in part upon our ability to obtain and maintain exclusivity for our products, product candidates and platform technologies.  
We typically rely on a combination of patent protection and regulatory exclusivity to maintain exclusivity for our products and product candidates, whereas 
exclusivity for our platform technologies is generally based on patent protection and trade secret protection.  In addition to patent protection, regulatory 
exclusivity, and trade secret protection, we also protect our products, product candidates and platform technologies with copyrights, trademarks, and 
contractual protections.

We actively seek patent protection for our product candidates and certain of our proprietary technologies by filing patent applications in the U.S. 

and other countries as appropriate. These patent applications are directed to various inventions, including, but not limited to, active ingredients, 
pharmaceutical formulations, methods of use, and manufacturing methods.  In addition, we actively acquire exclusive rights to third party patents and 
patent applications to protect our in-licensed product candidates and corresponding platform technologies.

We do not have patents or patent applications in every jurisdiction where there is a potential commercial market for our product candidates. For 

each of our programs, our decision to seek patent protection in specific foreign markets, in addition to the U.S., is based on many factors, including:

•

•

•

•

•

•

our available resources;

the number and types of patents already filed or pending;

the likelihood of success of the product candidate;

the size of the commercial market;

the presence of a potential competitor in the market; and

whether the legal authorities in the market effectively enforce patent rights.

We continually evaluate our patent portfolio and patent strategy and believe our owned and licensed patents and patent applications provide us 

with a competitive advantage; however, if markets where we do not have patents or patent applications become commercially important, our business may 
be adversely affected. A discussion of certain risks and uncertainties that may affect our freedom to operate, patent position, regulatory exclusivities and 
other proprietary rights is set forth in Item 1A. Risk Factors included in this report, and a discussion of legal proceedings related to the key patents 
protecting our products and product candidates are set forth below in the footnotes to the tables in this section.

Certain of our product candidates are in therapeutic areas that have been the subject of many years of extensive research and development by 

academic organizations and third parties who may control patents or other intellectual property that they might assert against us, should one or more of our 
product candidates in these therapeutic areas succeed in obtaining regulatory approval and thereafter be commercialized. We continually evaluate the 
intellectual property rights of others in these areas in order to determine whether a claim of infringement may be made by others against us.  Should we 
determine that a third party has intellectual property rights that could impact our ability to freely market a compound, we consider a number of factors in 
determining how best to prepare for the commercialization of any such product candidate.  In making this determination we consider, among other things, 
the stage of development of our product candidate, the anticipated date of first regulatory approval, whether we believe the intellectual property rights of 
others are valid, whether we believe we infringe the intellectual property rights of others, whether a license is available upon commercially reasonable 
terms, whether we will seek to challenge the intellectual property rights of others, the term of the rights, and the likelihood of and liability resulting from an 
adverse outcome should we be found to infringe the intellectual property rights of others.

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Currently, U.S. patents, as well as most foreign patents, are generally effective for 20 years from the date the earliest regular application was 

filed.  In some countries, the patent term may be extended to recapture a portion of the term lost during regulatory review of the claimed therapeutic.  For 
example, in the U.S., under the Drug Price Competition and Patent Term Restoration Act of 1984, commonly known as the Hatch-Waxman Act, a patent 
that covers an FDA-approved drug may be eligible for patent term extension (for up to 5 years, but not beyond a total of 14 years from the date of product 
approval) as compensation for patent term lost during the FDA regulatory review process.  In the U.S., only one patent may be extended for any product 
based on FDA delay.  In addition to patent term extension, patents in the U.S. may be granted additional term due to delays at the USPTO during 
prosecution of a patent application.  We actively strive to maximize the potential for patent protection for our products and product candidates in 
accordance with the law. 

Key Patents & Regulatory Exclusivities

Our products, product candidates and our technologies are primarily protected by composition of matter and methods of use patents and patent 
applications. A summary of granted composition of matter and/or methods of use patents that we solely own or control (or in the case of BioMarin/AZL 
patents, control with BioMarin), which cover our products in the U.S. and Europe, is provided below. To the extent the product indicated above the tables 
that immediately follow the name of such product is covered by a patent that is licensed to Sarepta, we may owe milestones and/or royalties to the indicated 
licensor in connection with the development and/or commercial sale of the product.

Eteplirsen

Patent Number 

Country/Region*

Patent Type

Expiration Date**

1
U.S. RE47,751
U.S. 9,018,368
US 10,781,451
2
U.S. 9,243,245
3
U.S. RE48,468
4
U.S. RE47,769
U.S. 9,506,058
U.S. 10,364,431
U.S. 10,337,003

United States
United States
United States
United States
United States
United States
United States
United States
United States

Methods of Use
Composition of Matter
Composition of Matter
Methods of Use 
Methods of Use 
Composition of Matter
Methods of Use 
Methods of Use 
Methods of Use 

June 28, 2025
June 28, 2025
June 28, 2025
October 27, 2028
October 27, 2028
February 2, 2029
March 14, 2034
March 14, 2034
March 14, 2034

Owner/Licensor 
(if not Sarepta)
UWA
UWA
UWA
BioMarin/AZL
BioMarin/AZL
UWA
Sarepta
Sarepta
Sarepta

1.

2.

3.

4.

Reissue of U.S. 8,486,907, which previously was involved in U.S. Patent Interference No. 106,013 and ordered to be cancelled pursuant to 
Judgment dated September 29, 2015 (Decision dated December 29, 2015 denied our (UWA) Request for Rehearing.  Appeal by us (UWA) to the 
Court of Appeals for the Federal Circuit (Case Nos. 2016-1937, 2016-2086 (consolidated)) voluntarily dismissed July 27, 2017.)  
Reissue application of U.S. 9,243,245 pending.
Reissue of U.S. 9,243,245.
Reissue of U.S. 7,807,816, which previously was involved in U.S. Patent Interference No. 106,008 (Judgment dated September 20, 2016 ordered 
cancellation of all claims of U.S. Application No. 13/550,210 to BioMarin (AZL).  Appeal by BioMarin (AZL) to the Court of Appeals for the 
Federal Circuit (Case No. 2017-1078) voluntarily dismissed July 27, 2017.)  

Patent Number 

Country/Region*

Patent Type

Expiration Date**

EP 1 766 010 B1

Europe

Composition of Matter & 
Methods of Use

June 28, 2025

Owner/Licensor 
(if not Sarepta)
UWA

The various types of regulatory exclusivity for which our products have been granted and our product candidates are anticipated to be eligible to 
receive are generally discussed below, under ‘Government Regulation’ – ‘Data and Market Exclusivities’ and ‘Orphan Drug Designation and Exclusivity’.  
In connection with its FDA approval on September 19, 2016, EXONDYS 51 (eteplirsen) is protected with Orphan Drug Exclusivity until September 19, 
2023.

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Golodirsen

Patent Number 

Country/Region*

Patent Type

Expiration Date**

1
U.S. RE47,691
U.S. 9,024,007
2
U.S. 9,994,851
2
U.S. 10,266,827
2
U.S. 10,227,590
U.S. 10,421,966
U.S. 10,968,450
U.S. 10,995,337

United States
United States
United States
United States
United States
United States
United States
United States

Composition of Matter 
Composition of Matter
Composition of Matter
Methods of Use
Composition of Matter
Composition of Matter
Composition of Matter
Composition of Matter & 
Methods of Use

June 28, 2025
June 28, 2025
June 28, 2025
June 28, 2025
June 28, 2025
June 28, 2025
June 28, 2025
June 28, 2025

Owner/Licensor 
(if not Sarepta)
UWA
UWA
UWA
UWA
UWA
UWA
UWA
UWA

1.

2.

1.

Reissue of U.S. 8,455,636, which previously was involved in U.S. Patent Interference No. 106,007.  (Judgment dated April 29, 2016 ordered 
cancellation of (i) all claims, except claim 77, of U.S. Application No. 11/233,495 to BioMarin (AZL); and (ii) U.S. 8,455,636 to us (UWA).  Appeal 
by BioMarin (AZL) to the Court of Appeals for the Federal Circuit (Case No. 2016-2262) voluntarily dismissed July 27, 2017.)
Involved in Nippon Shinyaku Co., Ltd. v. Sarepta Therapeutics, Inc., C.A. No. 21-1015 (LPS) (D. Del. 2021) filed on July 13, 2021 in which Nippon 
Shinyaku is seeking a determination of invalidity and Sarepta is seeking counterclaims of infringement.

Patent Number 

Country/Region*

Patent Type

Expiration Date**

1
EP 2 206 781 B1

EP 2 970 964 B1

Europe

Europe

Composition of Matter & 
Methods of Use
Composition of Matter

June 28, 2025

March 14, 2034

Sarepta

Owner/Licensor 
(if not Sarepta)
UWA

Involved in Opposition proceedings initiated on August 25, 2016.  EPO ordered revocation of patent on December 19, 2017.  Appeal filed February 
19, 2018 is pending.

The various types of regulatory exclusivity for which our products have been granted and our product candidates are anticipated to be eligible to 
receive are generally discussed below, under ‘Government Regulation’ – ‘Data and Market Exclusivities’ and ‘Orphan Drug Designation and Exclusivity’.  
In connection with its FDA approval on December 12, 2019, the FDA granted VYONDYS 53 (golodirsen) NCE exclusivity until December 12, 2024, and 
Orphan Drug Exclusivity until December 12, 2026.

Casimersen 

Patent Number 

U.S. 9,447,415

1
U.S. 8,524,880

U.S. 9,228,187

U.S. 9,758,783
U.S. 10,287,586

U.S. 10,781,450

Owner/Licensor 
(if not Sarepta)
UWA

Country/Region*

Patent Type

Expiration Date**

United States

United States

United States

United States
United States

United States

Composition of 
Matter
Composition of 
Matter & 
Methods of Use
Composition of 
Matter
Methods of Use
Composition of 
Matter
Methods of Use

June 28, 2025

April 2, 2026

UWA

November 12, 2030

UWA

November 12, 2030
November 12, 2030

UWA
UWA

November 12, 2030

UWA

1.

Reissue application of U.S. 8,524,880 pending.

Patent Number 

Country/Region*

Patent Type

Expiration Date**

EP 2 499 249 B1

Europe

Composition of Matter & 
Methods of Use

November 12, 2030

Owner/Licensor 
(if not Sarepta)
UWA

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The various types of regulatory exclusivity for which our products have been granted and our product candidates are anticipated to be eligible to 
receive are generally discussed below, under ‘Government Regulation’ – ‘Data and Market Exclusivities’ and ‘Orphan Drug Designation and Exclusivity’. 
In connection with its FDA approval on February 25, 2021, the FDA granted AMONDYS 45 (casimersen) NCE exclusivity until February 25, 2026, and 
Orphan Drug Exclusivity until February 25, 2028.

*  Granted patents in the U.S. and Europe (EP) are shown here.  Additional patent protection in the U.S., Europe (EP) or other countries or 

regions through pending or granted foreign counterparts may be available.

**  Stated expiration dates do not account for any patent term extension, supplemental protection certificate or pediatric extensions that may be 

available.

In addition to the foregoing composition of matter and method of use patents that protect eteplirsen, casimersen and golodirsen, we either solely 

own or control (or in the case of BioMarin/AZL patents, control with BioMarin) patents and patent applications in the U.S. and in major foreign markets 
that, if granted, provide additional protection for eteplirsen, casimersen, and golodirsen, which cover the composition of matter, preparation and/or uses of 
the products. These patents, and patent applications, if granted, would expire through at least 2038, such expiration dates not accounting for any patent term 
extension, patent term adjustment, supplemental protection certificate or pediatric extensions that may be available.    

Platform Technologies

We separately own patents and patent applications in the U.S. and in major foreign markets that cover our proprietary PMO-based platform 

technologies (e.g., PPMO) relevant to our products. These patents, and patent applications, if granted, expire through at least 2038, such expiration dates 
not accounting for any patent term extension, supplemental protection certificate or pediatric extensions that may be available. 

Trademarks

Our trademarks are important to us and are generally filed to protect our corporate brand, our products and platform technologies.  We typically 

file trademark applications and pursue their registration in the U.S., Europe and other markets in which we anticipate using such trademarks.  We are the 
owner of multiple federal trademark registrations in the U.S. including, but not limited to, Sarepta, Sarepta Therapeutics, the double-helix logo, 
EXONDYS, EXONDYS 51, the EXONDYS 51 Logo, VYONDYS, VYONDYS 53, the VYONDYS 53 Logo, AMONDYS, AMONDYS 45, and the 
AMONDYS 45 Logo.   In addition, we have multiple pending trademark applications and registrations in the U.S. and in major foreign markets.  
Trademark protection varies in accordance with local law, and continues in some countries as long as the trademark is used and in other countries as long as 
the trademark is registered. Trademark registrations generally are for fixed but renewable terms.

Government Regulation

The testing, manufacturing, labeling, advertising, promotion, distribution, exportation and marketing of our products are subject to extensive 
regulation by governmental authorities in the U.S. and in other countries. In the U.S., the FDA, under the Federal Food, Drug and Cosmetic Act and its 
implementing regulations, regulates pharmaceutical products. Failure to comply with applicable U.S. requirements may subject us to administrative or 
judicial sanctions, such as FDA refusal to approve pending marketing applications, withdrawal of approval of approved products, warning letters, untitled 
letters, product recalls, product seizures, total or partial suspension of production or distribution, injunctions, civil penalties and/or criminal prosecution.

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U.S. Drug Approval Process

To obtain FDA approval of a product candidate, we must, among other things, submit clinical data providing substantial evidence of safety and 

efficacy of the product for its intended use, as well as detailed information on product composition, its manufacture and controls and proposed labeling. 
The testing and collection of data and the preparation of necessary applications are expensive and time-consuming. The FDA may not act quickly or 
favorably in reviewing these applications, and we may encounter significant difficulties or costs in our efforts to obtain FDA approvals that could delay or 
preclude us from marketing our products.

The steps required before a drug may be approved for marketing in the U.S. generally include the following:

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pre-clinical laboratory tests and animal toxicity testing;

submission of an IND for conducting human clinical testing to the FDA, which must become effective before human clinical trials 
commence; 

approval by an Institutional Review Board (“IRB”) or independent ethics committee at each clinical trial site before each trial may be 
initiated;

adequate and well-controlled human clinical trials to establish the safety and efficacy of the drug product for each indication, including 
controlled studies or comparison of treated group from clinical trials to data from natural history data or studies;

submission of a complete and compliant marketing application containing chemistry, manufacturing and control information for the drug 
substance and drug product, reports of nonclinical and clinical trials, product labeling and administrative information; 

satisfactory completion of an FDA inspection of the commercial manufacturing facilities at which the drug substance and drug product 
are made to assess compliance with cGMP;

satisfactory FDA audit of the clinical trial site(s) that generated the pivotal safety and efficacy data included in the marketing application 
and also potentially the nonclinical trial site(s) in the form of pre-approval inspections; and

FDA review and approval of the marketing application.

Pre-clinical trials may include laboratory evaluations of the product chemistry, pharmacology, toxicity and formulation, as well as animal studies 

to assess the pharmacokinetics, metabolism, bio-distribution, elimination and toxicity of the product candidate. The conduct of the pre-clinical tests and 
formulation of the compounds for testing must comply with federal regulations and requirements. The results of the pre-clinical trials, manufacturing 
information, analytical data and a proposed first in human clinical trial protocol are submitted to the FDA as part of the IND, which must become effective 
before clinical trials may be initiated. The IND will become effective 30 days after receipt by the FDA, unless the FDA raises concerns or questions about 
the supportive data, or the study design, particularly regarding potential safety issues with conducting the clinical trial as described in the protocol. In this 
situation, the trials are placed on clinical hold and the IND sponsor must resolve any outstanding FDA concerns before clinical trials can proceed.

Clinical trials involve the administration of the product candidate to healthy volunteers or patient participants under the supervision of a qualified 

principal investigator. Clinical trials are conducted under protocols detailing the objectives of the study, the administration of the investigational product, 
subject selection and exclusion criteria, study procedures, parameters to be used in monitoring safety and the effectiveness criteria to be evaluated. Each 
protocol must be submitted to the FDA as a submission to the IND. Clinical trials must be conducted and monitored in accordance with the FDA’s Good 
Clinical Practice (“GCP”) requirements and federal and state laws and regulations protecting study subjects. Further, each clinical trial must be reviewed 
and approved by the Institutional Review Board (“IRB”) at or servicing each institution in which the clinical trial will be conducted. The IRB will consider, 
among other things, rationale for conducting the trial, clinical trial design, participant informed consent, ethical factors, the safety and rights of human 
subjects and the possible liability of the institution. The FDA can temporarily or permanently halt a clinical trial at any time, or impose other sanctions, if it 
believes that the clinical trial is not being conducted in accordance with FDA requirements or presents an unacceptable risk to the clinical trial subjects. 
The IRB may also require the clinical trial at a particular site be halted, either temporarily or permanently, for failure to comply with GCP or the IRB’s 
requirements, or may impose other conditions.

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Clinical trials typically are conducted in three sequential drug development phases (Phases 1, 2 and 3) prior to approval, and a portion of these 

phases may overlap. A fourth post-approval phase (Phase 4) may include additional clinical trials. A general description of clinical trials conducted in each 
phase of development is provided below. However, the number of study subjects involved in each phase of drug development for rare diseases can be 
significantly less than typically expected for more common diseases with larger patient populations:

•

•

•

•

Phase 1. Phase 1 clinical trials involve the initial introduction of the drug into human subjects. These studies are usually designed to 
determine the safety of single and multiple doses of the compound and determine any dose limiting toxicities or intolerance, as well as the 
metabolism and pharmacokinetics of the drug in humans. Phase 1 studies usually involve less than 100 subjects and are conducted in 
healthy adult volunteers, unless it is unethical to administer the study drug to healthy volunteers, in which case they are tested in patients.

Phase 2. Phase 2 clinical trials are usually conducted in a limited patient population to evaluate the safety and efficacy of the drug for a 
specific indication to determine optimal dosage and to identify possible adverse effects and safety risks. Phase 2 studies usually involve 
patients with the disease under investigation and may vary in size from several dozen to several hundred.

Phase 3. If an investigational drug is found to be potentially effective and to have an acceptable safety profile in early phase studies, larger 
Phase 3 clinical trials are conducted to confirm clinical efficacy, dosage and safety in the intended patient population, which may involve 
geographically dispersed clinical trial sites. Generally, two adequate and well-controlled Phase 3 clinical trials which establish the safety 
and efficacy of the drug for a specific indication are required for approval of a marketing application. Phase 3 studies usually include 
several hundred to several thousand patients for larger, non-orphan drug indications/diseases. However, clinical trials for rare or orphan 
diseases generally have fewer patients due to their lower prevalence. For these orphan diseases, a company may also try to demonstrate 
efficacy and safety by comparing treated patients in clinical trials to untreated patients participating in placebo-controlled clinical trials or 
to observational natural history studies. 

Phase 4. Phase 4 trials are clinical trials conducted after the FDA has approved a product for marketing. Typically, there are two forms of 
Phase 4 trials: those that are conducted to fulfill mandatory conditions of product approval and those that are voluntarily conducted to 
gain additional experience from the treatment of patients in the intended therapeutic indication. The mandatory studies are used to confirm 
clinical benefit in the case of drugs approved under the accelerated approval regulations or to provide additional clinical safety or efficacy 
data for “full” approvals. Failure to promptly conduct and complete mandatory Phase 4 clinical trials could result in withdrawal of 
approval for products approved under accelerated approval regulations.

A company seeking marketing approval for a new drug in the U.S. must submit the results of the pre-clinical and clinical trials to the FDA in the 
form of a marketing application, together with, among other things, detailed information on the manufacture and composition of the product candidate and 
proposed labeling, including payment of a user fee for FDA review of the application. The user fee is waived for an application for a product intended to 
treat an Orphan Indication. The FDA assesses all submitted marketing applications for completeness before it accepts them for filing. In some cases, the 
FDA may request additional information before accepting a marketing application for filing. Once the submission is accepted for filing, the FDA begins an 
in-depth review of the marketing application. Applications receive either standard or priority review. Under the current goals mandated under the 
Prescription Drug User Fee Act (the “PDUFA”), the FDA has ten months in which to complete its initial review of a standard marketing application and 
respond to the applicant, and six months for a priority marketing application. The FDA does not always meet its PDUFA goal dates for standard or priority 
marketing applications. The review process and the PDUFA goal date may be extended by three months if the FDA requests or the marketing application 
sponsor otherwise provides additional information or clarification regarding information already provided in the submission within the last three months 
before the PDUFA goal date. The FDA may refer an application to an advisory committee for review, evaluation and recommendation as to whether the 
application should be approved. Though the FDA is not bound by such recommendations, it considers them carefully when making decisions. If the FDA’s 
evaluations of the marketing application and the clinical and manufacturing procedures and facilities are favorable, the FDA may issue an approval letter. If 
the FDA finds deficiencies in the marketing application, it may issue a complete response letter, which defines the conditions that must be met in order to 
secure final approval of the marketing application. If and when those conditions have been met to the FDA’s satisfaction, the FDA will issue an approval 
letter, authorizing commercial marketing of the drug. Sponsors that receive a complete response letter may submit to the FDA information that represents a 
complete response to the issues identified by the FDA. Resubmissions by the marketing application sponsor in response to a complete response letter 
trigger new review periods of varying length (typically two to six months) based on the content of the resubmission. If the FDA’s evaluation of the 
marketing application and the commercial manufacturing procedures and facilities is not favorable, the FDA may not approve the marketing application. 

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A sponsor may also seek designation of its drug candidates under programs designed to accelerate the FDA’s review and potential approval of 

marketing applications. For instance, a sponsor may seek FDA designation of a drug candidate as a “fast track product.” Fast track products are those 
products intended for the treatment of a serious or life-threatening disease or condition and which demonstrate the potential to address unmet medical needs 
for such disease or condition. If fast track designation is obtained, the FDA may initiate early and frequent communication and begin reviewing sections of 
a marketing application before the application is complete. This “rolling review” is available if the applicant provides, and the FDA approves, a schedule 
for the remaining information. Eteplirsen was granted fast track status in 2007.

The Food and Drug Administration Safety and Innovation Act (“FDASIA”) enacted and signed into law in 2012 amended the criteria for the fast 

track and accelerated approval pathways and, as a result, the pathways now share many common eligibility criteria. FDASIA provides both the sponsor 
companies and the FDA with greater flexibility and expedited regulatory mechanisms. The statute clarifies that a fast track product may be approved 
pursuant to an accelerated approval (Subpart – H) or under the traditional approval process. In addition, FDASIA codified the accelerated approval 
pathway as separate and apart from the fast track pathway, meaning that for drugs to be eligible for accelerated approval, they do not need to be designated 
under the fast track pathway. FDASIA reinforces the FDA’s authority to grant accelerated approval of a drug that treats a serious condition and generally 
provides a meaningful advantage over available therapies and demonstrates an effect on a surrogate endpoint that is reasonably likely to predict clinical 
benefit or on a clinical endpoint that can be measured earlier than irreversible morbidity or mortality (“IMM”) that is reasonably likely to predict an effect 
on IMM or other clinical benefit (i.e., an intermediate clinical endpoint). Approvals of this kind typically include requirements for appropriate post-
approval Phase 4 clinical trials to confirm clinical benefit. FDASIA retains this requirement and further requires those studies to verify and describe the 
predicted effect on irreversible morbidity or mortality or other clinical benefit. 

Additionally, FDASIA established a new, expedited regulatory mechanism referred to as breakthrough therapy designation. Breakthrough 

therapy designation, fast track, and accelerated approval are not mutually exclusive and are meant to serve different purposes. The breakthrough therapy 
designation is focused on expediting the development and review process and by itself does not create an alternate ground for product approval. A sponsor 
may seek FDA designation of a drug candidate as a breakthrough therapy if the drug is intended, alone or in combination with one or more other drugs, to 
treat a serious or life-threatening disease or condition and preliminary clinical evidence indicates that the drug may demonstrate substantial improvement 
over existing therapies on one or more clinically significant endpoints, such as substantial treatment effects observed early in clinical development. The 
FDA issued guidance entitled “Expedited Programs for Serious Conditions––Drugs and Biologics” in May 2014. 

Finally, if a drug candidate demonstrates a significant benefit over existing therapy, it may be eligible for priority review, which means it will be 
reviewed within a six-month timeframe from the date a complete marketing application is accepted for filing. A Regenerative Medicine Advanced Therapy 
(“RMAT”) designation is also designed to accelerate approval for regenerative advanced therapies such as our gene therapy product candidates, but the 
exact mechanisms have not yet been announced by FDA.

We cannot be sure that any of our drug candidates will qualify for any of these expedited development, review and approval programs, or that, if 
a drug does qualify, that the product candidates will be approved, will be accepted as part of any such program or that the review time will be shorter than a 
standard review. 

Holders of an approved marketing application are required to:

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report serious adverse drug reactions to the FDA;

submit annual and periodic reports summarizing product information and safety data;

comply with requirements concerning advertising and promotional labeling; 

continue to have quality control and manufacturing procedures conform to cGMP after approval; and

conduct any post-marketing study designated as a required condition of the marketing application approval.

The FDA periodically inspects the sponsor’s records related to safety reporting and/or manufacturing; this latter effort includes assessment of 

compliance with cGMP. Accordingly, manufacturers must continue to expend time, money and effort in the area of production and quality control to 
maintain cGMP compliance. Discovery of problems with a product after approval may result in restrictions on a product, manufacturer, or holder of an 
approved marketing application, including withdrawal of the product from the market.

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Foreign Regulatory Requirements

In November 2016, we submitted a marketing authorization application (“MAA”) for eteplirsen to the EMA and the application was validated in 
December 2016. As we announced on June 1, 2018, the Committee for Medicinal Products for Human Use (“CHMP”) within the EMA adopted a negative 
opinion for eteplirsen. In September 2018, the CHMP confirmed its negative opinion for eteplirsen, and the European Commission adopted the CHMP 
opinion in December 2018. 

As of the date of this Annual Report, EXONDYS 51, VYONDYS 53 and AMONDYS 45 have only been approved for sale and marketing in the 

U.S. by the FDA, and EXONDYS 51 has been approved in addition for sale and marketing in Israel by the Israeli Ministry of Health. 

Thus, in addition to regulations in the U.S., our business is subject to a variety of foreign regulations governing clinical trials and commercial 
sales and distribution of our products. Irrespective of whether it concerns an FDA approved or investigational drug, the commencement of clinical trials 
and the subsequent marketing of a drug product in foreign countries are subject to preliminary approvals from the corresponding regulatory authorities of 
such countries. For example, until the entry into application of the Clinical Trial Regulation 536/2014 and the end of the transition period (see below) the 
conduct of clinical trials in the EU is still governed by the Clinical Trials Directive 2001/20/EC and Directive 2005/28/EC laying down the requirements 
for the conduct of clinical trials in the EU and the principles and guidelines on GCP. Both Directives provide a system for the approval of clinical trials, 
which has been implemented through national legislation in the member states of the EU (“EU Member States”). Under this system, a sponsor must obtain 
approval from the competent national authority of an EU Member State in which the clinical trial is to be conducted, or in multiple EU Member States if 
the clinical trial is to be conducted in a number of countries. Furthermore, the sponsor may only start a clinical trial at a specific study site after the 
competent ethics committee has issued a favorable opinion. The Clinical Trials Application (“CTA”) must include the supporting information prescribed by 
Directive 2001/20/EC and Directive 2005/28/EC, corresponding national laws of the EU Member States, and as further detailed in the applicable guidance 
documents.  

In April 2014, the EU adopted a new Clinical Trials Regulation (EU) No 536/2014 to replace the current Clinical Trials Directive 2001/20/EC. 
Although the new Clinical Trials Regulation had been adopted and had entered into force in 2014, it would only come into application in the EU Member 
States six months after the EC has confirmed the functionality of the new Clinical Trials Information System (“CTIS”), which includes the centralized EU 
portal and database for clinical trials introduced by the Regulation. On July 31, 2021, the EC published a notice in the Official Journal of the European 
Union, confirming full functionality of the EU portal and database. The Regulation will hence enter into application on January 31, 2022. When the 
Regulation enters into application, it will repeal the currently applicable Clinical Trials Directive 2001/20/EC and its national implementation legislations. 
It will also apply to clinical trials that were authorized under the previous legislation if they are still ongoing three years after the Regulation has come into 
operation. There is a three-year transition period after entry into application of the Clinical Trials Regulation. During the first year, until January 31, 2023, 
sponsors of clinical trials will be able to choose whether to file a CTA under the regime of the Directive, using the EudraCT, or under the Regulation, using 
the CTIS. As of the second year, all new CTAs must be submitted under the Clinical Trials Regulation, via the CTIS. Clinical trials that were submitted 
under the Directive prior to January 31, 2023, will be allowed to continue under the old regime until the end of the transition period, but sponsors may also 
opt to transition ongoing trials on a voluntary basis. By January 31, 2025, all clinical trials that had been authorized under the Directive, must either have 
ended in the EU and European Economic Area (the “EEA”), or have been transitioned to the new regime. No legislation needs to be adopted to implement 
the new Regulation into national EU Member State law. The new Regulation provides an overhaul of the system, in order to harmonize the assessment of 
the submission and assessment of clinical trials conducted in EU Member States and to ensure greater consistency with the highest standards of patient 
safety in the EU. Specifically, the new legislation seeks to simplify and streamline approval of the clinical trials. Under the new coordinated procedure, the 
sponsor of a clinical trial is required to submit a single application to a reporting EU Member State via the centralized EU portal in the CTIS. The reporting 
EU Member State will consult and coordinate with all other EU Member States in which the clinical trial is planned to be conducted. If the application is 
rejected, it can be amended and resubmitted through the central EU portal in the CTIS. If an approval is issued, the sponsor can start the clinical trial in all 
EU Member States concerned. However, an EU Member State can in certain cases declare an “opt-out” from the approval. In such a case, the clinical trial 
cannot be conducted in such EU Member State(s). The Clinical Trials Regulation also aims to streamline and simplify the rules on safety reporting for 
clinical trials.

In order to obtain marketing authorization for a medicinal product in the EU, applicants are required to submit a MAA to either (a) the national 

competent authorities (through the decentralized, mutual recognition, or national procedures) or (b) the EMA (through the centralized authorization 
procedure). Applicants are required to demonstrate the quality, safety and efficacy of the medicinal product in the application for marketing authorization, 
which implies the requirement to conduct human clinical trials to generate the necessary clinical data. Furthermore, all applications for marketing 
authorization for new medicines have to include the results of studies as described in an agreed pediatric investigation plan (“PIP”) aimed at ensuring that 
the necessary data are obtained through studies in children, unless the medicine is exempt because of a deferral or waiver. Deferrals allow an applicant to 
delay development of the medicine in children until, for instance, there is enough information to demonstrate its effectiveness and safety in adults. Waivers, 
on the other hand, may be granted when the development of a medicine in children is not needed or is not appropriate, such as for diseases that only affect 
the adult population. Regulation (EC) No 726/2004 of the European Parliament and of the Council lays down the rules applicable to the centralized 
procedure for the authorization of medicinal products. The centralized procedure allows pharmaceutical companies to submit a single application to the 
EMA, which is followed by a single evaluation and which results in a single approval to market the medicinal product throughout the EEA, on the basis of 
a single market authorization. Approval via the centralized procedure is a two-step process whereby the CHMP first evaluates the MAA and issues an 
opinion on 

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whether the medicinal product may be authorized or not (step 1). The CHMP opinion is subsequently sent to the EC, which takes a legally binding decision 
to grant a marketing authorization (step 2). The marketing authorization is valid throughout the EU and is automatically recognized in three of the four 
European Free Trade Association states (Iceland, Liechtenstein and Norway). This allows the marketing authorization holder to market the medicine and 
make it available throughout the EEA. The timeframe for the first step of the centralized procedure (evaluation by the CHMP) opinion is 210 days from 
receipt of a valid application. However, the actual time needed to complete this first step is generally longer than the 210 days, since procedural clock stops 
are required in order for the applicant to respond to additional requests for information by the CHMP. Following a positive CHMP opinion, the EC has 67 
days to issue its decision to grant the marketing authorization or not.

Accelerated evaluation of the MAA under the centralized procedure is possible in exceptional cases, following a justified request from the 

applicant, when a medicinal product is of a major public health interest, particularly from the point of view of therapeutic innovation. The CHMP 
determines what constitutes a major public interest on a case-by-case basis. Justifications must include the major benefits expected and present the 
arguments to support the claim that the medicinal product introduces new methods of therapy or improves on existing methods, thereby addressing, to a 
significant extent, the greater unmet needs for maintaining and improving public health. If the applicant provides sufficient justification for an accelerated 
assessment, the CHMP can reduce the timeframe for review of a MAA to 150 days. The timeframe for the EC to issue its decision remains unaltered.

Article 3 of Regulation (EC) No 726/2004 defines in which cases the centralized application procedure must (mandatory scope) or may (optional 

scope) be followed. The centralized procedure is mandatory for medicinal products derived from biotechnological and other high-tech processes, orphan 
medicinal products, advanced therapy medicinal products and products indicated for the treatment of HIV/AIDS, cancer, diabetes, auto-immune and other 
immune dysfunctions, viral diseases and neurodegenerative diseases. For medicinal products that do not fall under any of the aforementioned categories, a 
submission via the centralized procedure is possible, provided that it concerns (i) a new active substance or (ii) product that can demonstrate a significant 
therapeutic, scientific or technical innovation and for which approval would be in the interest of public health. Given the foregoing, our portfolio of 
innovative orphan products for neurodegenerative diseases is subject to the mandatory centralized procedure.

Innovative medicinal products which have been authorized in accordance with the centralized procedure, benefit from an eight-year period of 

data protection/exclusivity and a ten-year period of marketing protection/exclusivity. During the data exclusivity period, applicants for approval of generics 
of these innovative products cannot reference or rely upon data contained in the marketing authorization dossier submitted for the innovative medicinal 
product. Furthermore, the marketing protection entails that even if the generic product is approved, it cannot be placed on the market until the full ten-year 
period of market protection has elapsed from the initial authorization of the reference medicinal product. The marketing protection period can be extended 
to a maximum of eleven years if, during the first eight years of those ten years, the marketing authorization holder for the innovative product 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. 

Similar to the U.S., marketing authorization holders and manufacturers of medicinal products are subject to comprehensive regulatory oversight 
by the EMA and/or the national competent authorities of the EU Member States. This oversight applies both before and after the granting of manufacturing 
and marketing authorizations. It includes compliance with EU GMP and GDP rules in relation to such activities as distribution, importing and exporting of 
medicinal products, rules governing conduct of pharmacovigilance (including good pharmacovigilance practices (“GVP”)) and requirements governing 
advertising, promotion and sale of medicinal products. 

Failure to comply with the EU Member State laws implementing the EU Community Code on medicinal products, and EU rules governing the 

promotion of medicinal products, interactions with physicians, misleading and comparative advertising and unfair commercial practices, with the EU 
Member State laws that apply to the promotion of medicinal products, statutory health insurance, bribery and anti-corruption or with other applicable 
regulatory requirements can result in enforcement action by the relevant EU Member State authorities. This may include any of the following sanctions: 
fines, imprisonment, orders forfeiting products or prohibiting or suspending their supply to the market, orders to suspend, vary, or withdraw the marketing 
authorization or requiring the manufacturer to issue public warnings, or to conduct a product recall. 

The approval process in other countries outside the U.S. and the EU varies from country to country, and the time may be longer or shorter than 

that required for the FDA approval. In addition, the requirements governing the conduct of clinical trials, product licensing, pricing and reimbursement for 
market access vary greatly from country to country. In all cases, clinical trials are conducted in accordance with GCP and the applicable regulatory 
requirements and the ethical principles that have their origin in the Declaration of Helsinki.

Data and Market Exclusivities

In addition to patent exclusivities, the FDA and certain other foreign health authorities may grant data or market exclusivity for a newly 

approved chemical entity or biologic, which runs in parallel to any patent protection. Regulatory data protection or 

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exclusivity prevents a potential generic competitor from relying on clinical trial data generated by the sponsor when establishing the safety and efficacy of 
its competing product. Market exclusivity prohibits any marketing of the same drug for the same indication.

In the U.S., the FDA will generally grant an NCE that is the subject of an NDA with five years of regulatory data exclusivity, during which time 
a competitor generally may not submit an application to the FDA based on a sponsor’s clinical data.  A competitor, however, may file an Abbreviated New 
Drug Application (“ANDA”) seeking approval of a generic drug four years from the date of approval of the innovative product if it is accompanied by a so-
called Paragraph IV certification. For a newly approved biologic that is the subject of a Biologics License Application (“BLA”), the FDA will generally 
grant 12 years of market exclusivity, during which time a competitor may not market the same drug for the same indication.  

In addition, the FDA may provide six months of pediatric exclusivity to a sponsor of a marketing application if the sponsor conducted a pediatric 

study or studies of a product. This process is applied to products developed for adult use and is initiated by the FDA as a written request for pediatric 
studies that applies to a sponsor’s product. If the sponsor conducts qualifying studies and the studies are accepted by the FDA, then an additional six 
months of pediatric exclusivity will be added to previously granted exclusivity, such as orphan drug exclusivity and NCE exclusivity, as well as certain 
patent-based exclusivities. 

Orphan Drug Designation and Exclusivity

In the U.S., the FDA may grant orphan drug designation to drugs intended to treat a rare disease or condition that affects fewer than 200,000 

individuals in the U.S., or more than 200,000 individuals in the U.S. for which there is no reasonable expectation that the cost of developing and making 
available in the U.S. a drug for this type of disease or condition will be recovered from sales in the U.S. for that drug. An orphan drug designation must be 
requested before submitting an application for marketing approval. An orphan drug designation does not shorten the duration of the regulatory review and 
approval process. The approval of an orphan designation request does not alter the regulatory requirements and process for obtaining marketing approval. 
Safety and efficacy of a compound must be established through adequate and well-controlled studies. If a chemical or biological product which has an 
orphan drug designation subsequently receives FDA approval for the indication for which it has such designation, the product is generally entitled to an 
orphan drug exclusivity period of seven years, which means the FDA may not grant approval to any other application to market the same chemical or 
biological product for the same indication for a period of seven years, except in limited circumstances, such as where an alternative product demonstrates 
clinical superiority to the product with orphan exclusivity. In addition, holders of exclusivity for orphan drugs are expected to assure the availability of 
sufficient quantities of their orphan drugs to meet the needs of patients. Failure to do so could result in the withdrawal of orphan exclusivity for the drug. 
Competitors may receive approval of different drugs or biologics for the indications for which a prior approved orphan drug has exclusivity.

Pharmaceutical companies can apply for the designation as an orphan medicine. In the EU, applications for orphan designation are evaluated by 
the EMA in accordance with Regulation (EC) No 141/2000. In order to qualify as an orphan medicine, the medicinal product must be intended to diagnose, 
prevent or treat a condition that is life-threatening or chronically debilitating, with a prevalence of no more than 5 in 10,000 people in the EU or for which 
it is unlikely that its sale would generate sufficient returns to justify the investment needed for its development. In addition, the sponsor is required to 
demonstrate that no satisfactory method of diagnosis, prevention or treatment of the condition has been be authorized in the EU or, if such method exists, 
the medicinal product is of significant benefit to those affected by the condition as compared to approved methods. The benefits of being granted orphan 
designation are significant, including up to ten years of market exclusivity. During this ten-year period, the EMA may not accept a new marketing 
application for a similar medicinal product for the same therapeutic indication as the approved orphan medicinal product. Pursuant to Regulation (EC) 
1901/2006 on medicinal products for pediatric use, the ten-year orphan market exclusivity can be extended to a maximum period of twelve years upon the 
satisfactory completion of all the key elements of the agreed PIP. We have been granted orphan drug designation for eteplirsen in the EU. 

Expanded / Early Access 

In certain countries, drug products approved in the U.S. or the EU can be accessed by patients before the drug has obtained marketing approval 
in such country. There are various forms of this access including, but not limited to, the actual purchase of product by the purchaser, which is often times 
the government for patients, on a named patient basis, and providing the product free of charge on a named patient basis for compassionate use. Each 
country has its own laws and regulations that apply to these forms of access and the extent and nature of such laws and regulations vary by country. For 
example, in 2018, the so-called Right to Try Act became law in the U.S. The law, among other things, allows eligible patients to access certain 
investigational new drug products that have completed a Phase I clinical trial and that are undergoing investigation for FDA approval without enrolling in 
clinical trials and without obtaining FDA permission under the FDA expanded access program. There is no obligation for a pharmaceutical manufacturer to 
make its drug products available to such eligible patients as a result of the Right to Try Act.

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We established a global EAP for eteplirsen, golodirsen and casimersen in some countries where eteplirsen, golodirsen and casimersen currently 
have not been approved. The EAP provides a mechanism through which physicians can prescribe our products, within their professional responsibility, to 
patients who meet pre-specified medical and other criteria and can secure funding.

Other Regulatory Requirements

In addition to regulations enforced by the FDA and foreign authorities relating to the clinical development and marketing of products, we are or 

may become subject to regulation under the Occupational Safety and Health Act, the Toxic Substances Control Act, the Resource Conservation and 
Recovery Act and other present and potential future foreign, federal, state and local laws and regulations. Although we believe that we are in material 
compliance with applicable environmental laws that apply to us, we cannot predict whether new regulatory restrictions will be imposed by state or federal 
regulators and agencies or whether existing laws and regulations will adversely affect us in the future. While it is impossible to accurately predict the future 
costs associated with environmental compliance and potential remediation activities, we understand the importance of complying with all current and future 
applicable environmental laws and regulations. Compliance with environmental laws is not expected to require significant capital expenditures and has not 
had, and is not expected to have, a material adverse effect on our operations.

Healthcare Fraud and Abuse Laws

We are subject to various federal, state and local laws targeting fraud and abuse in the healthcare industry, including anti-kickback and false 

claims laws. Violations of fraud and abuse laws may be punishable by crime or civil sanctions, including fines and civil monetary penalties, and/or 
exclusion from federal health care programs (including Medicare and Medicaid). Federal and state authorities are paying increased attention to enforcement 
of these laws within the pharmaceutical industry, and private individuals have been active in alleging violations of the laws and bringing suits on behalf of 
the government under the federal False Claims Act (“FCA”). Violations of international fraud and abuse laws could result in similar penalties, including 
exclusion from participation in health programs outside the U.S. Given the broad scope of these laws, our activities could be subject to scrutiny under the 
laws. If we were subject to allegations concerning, or were convicted of violating, these laws, our business could be harmed. 

The federal Anti-Kickback Statute generally prohibits, among other things, a pharmaceutical manufacturer from directly or indirectly soliciting, 
offering, receiving, or paying any remuneration in cash or in kind where one purpose is either to induce the referral of an individual for, or the purchase or 
prescription of, a particular drug that is payable by a federal health care program, including Medicare or Medicaid. A person or entity does not need to have 
actual knowledge of the statute or a specific intent to violate the statute. Violations of the federal Anti-Kickback Statute can result in exclusion from 
Medicare, Medicaid or other governmental programs as well as civil and criminal fines and penalties of up to $105,563 per violation and three times the 
amount of the unlawful remuneration. A claim arising from a violation of the federal Anti-Kickback Statute also constitutes a false or fraudulent claim for 
purposes of the FCA. A new federal anti-kickback statute enacted in 2018 prohibits certain payments related to referrals of patients to certain providers 
(such as clinical laboratories) and applies to services reimbursed by private health plans as well as government health care programs. 

Federal and state false claims laws generally prohibit anyone from knowingly and willfully, among other activities, presenting, or causing to be 

presented for payment to third party payors (including Medicare and Medicaid) claims for drugs or services that are false or fraudulent (which may include 
claims for services not provided as claimed or claims for medically unnecessary services). False or fraudulent claims for purposes of the FCA carry fines 
and civil penalties for violations ranging from $11,803 to $23,607 for each false claim, plus up to three times the amount of damages sustained by the 
federal government and, may provide the basis for exclusion from federally funded healthcare programs. There is also a criminal FCA statute by which 
individuals or entities that submit false claims can face criminal penalties. In addition, under the federal Civil Monetary Penalty Law, the Department of 
Health and Human Services (“HHS”) Office of Inspector General has the authority to exclude from participation in federal health care programs or to 
impose civil penalties against any person who, among other things, knowingly presents, or causes to be presented, certain false or otherwise improper 
claims. A federal healthcare fraud statute prohibits the knowing and willful execution, or attempt to execute, a scheme to defraud a health care benefit 
program, including private health plans, or obtain, through false or fraudulent pretenses, money or property owned by, or under the custody or control of, 
such a health care benefit program.

The majority of states also have anti-kickback, false claims, and similar fraud and abuse laws and although the specific provisions of these laws 

vary, their scope is generally broad, and there may not be regulations, guidance or court decisions that apply the laws to particular industry practices. 

Laws and regulations have also been enacted by the federal government and various states to regulate the sales and marketing practices of 

pharmaceutical manufacturers. The laws and regulations generally limit financial interactions between manufacturers and health care providers; require 
pharmaceutical companies to comply with the pharmaceutical industry’s voluntary compliance guidelines and the relevant compliance guidance 
promulgated by the U.S. federal government; and/or require disclosure to the government and/or public of financial interactions (so-called “sunshine 
laws”). State laws may also require disclosure of pharmaceutical pricing information and marketing expenditures. Manufacturers must also submit 
information to the FDA on the 

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identity and quantity of drug samples requested and distributed by a manufacturer during each year. Many of these laws and regulations contain ambiguous 
requirements or require administrative guidance for implementation. Given the lack of clarity in laws and their implementation, our activities could be 
subject to the penalty provisions of the pertinent federal and state laws and regulations.

Data Privacy and Security

We may be subject to privacy and security laws in the various jurisdictions in which we operate, obtain or store personally identifiable 

information.  The legislative and regulatory landscape for privacy and data protection continues to evolve, and there has been an increasing focus on 
privacy and data protection issues with the potential to affect our business. Our ongoing efforts to comply with evolving laws and regulations may be costly 
and require ongoing modifications to our policies, procedures and systems. Failure to comply with laws regarding data protection would expose us to risk 
of enforcement actions and penalties under such laws. 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.

Within the U.S., there are numerous federal and state laws and regulations related to the privacy and security of personal information. For 

example, at the federal level, the Health Insurance Portability and Accountability Act of 1996 (“HIPAA”), as amended, and its implementing regulations 
establish privacy and security standards that limit the use and disclosure 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. While we have 
determined that we are neither a “covered entity” nor a “business associate” directly subject to HIPAA, many of the U.S. health care providers with which 
we interact are subject to HIPAA, and we may have assumed obligations related to protecting the privacy of personal information. States are increasingly 
regulating the privacy and security of personal information. For example, the California Consumer Privacy Act (“CCPA”), which took effect on January 1, 
2020, gives California consumers (defined to include all California residents) certain rights, including the right to ask covered companies to disclose the 
types of personal information collected, the categories of sources from which such information was collected, the business purpose for collecting or selling 
the consumer’s personal information, the categories of third parties with whom a covered company shares personal information, and specific pieces of 
information collected by a covered company.  The CCPA imposes several obligations on covered companies to provide notice to California consumers 
regarding their data processing activities. The CCPA also gives California consumers the right to ask covered companies to delete a consumer’s personal 
information and it places limitations on a covered company’s ability to sell personal information, including providing consumers a right to opt out of sales 
of their personal information. Additionally, the recently passed California Privacy Rights Act (“CPRA”), which will become operational in 2023, will 
significantly modify the CCPA, including expanding consumers’ rights with respect to certain sensitive personal information, and creating a new state 
agency that will be vested with authority to implement and enforce the CCPA and CPRA. The Virginia Consumer Data Protection Act (“CDPA”) was 
signed into law on March 2, 2021 and will go into effect on January 1, 2023. The CDPA provides consumers with new rights to access, correct, delete and 
obtain a copy of the personal information a covered business holds about them, and to opt out of certain data processing activities.

In addition, we may be subject to privacy and security laws in the various jurisdictions in which we operate, obtain or store personally 

identifiable information. The legislative and regulatory landscape for privacy and data protection continues to evolve, and there has been an increasing 
focus on privacy and data protection issues with the potential to affect our business.  For example, the processing of personal data in the EEA, is subject to 
the General Data Protection Regulation (the “GDPR”), which took effect in May 2018. The GDPR increases obligations with respect to clinical trials 
conducted in the EEA, such as in relation to the provision of fair processing notices, responding to data subjects who exercise their rights and reporting 
certain data breaches to regulators and affected individuals. The GDPR also requires us to enter certain contractual arrangements with third parties that 
process GDPR-covered personal data on our behalf. The GDPR also increases the scrutiny applied to transfers of personal data from the EEA (including 
from clinical trial sites in the EEA) to countries that are considered by the EC to lack an adequate level of data protection, such as the U.S.   The July 2020 
invalidation by the Court of Justice of the EU of the EU-U.S. Privacy Shield framework, one of the mechanisms used to legitimize the transfer of personal 
data from the EEA to the U.S., has led to increased scrutiny on data transfers from the EEA to the U.S. generally and may increase our costs of compliance 
with data privacy legislation. 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 EURO 
20 million or up to 4% of the total worldwide annual turnover of the preceding financial year, whichever is higher, as well as claims by affected individuals, 
negative publicity, reputational harm and a potential loss of business and goodwill.

Pharmaceutical Pricing and Reimbursement

We have an ongoing dialogue with payors globally with the goal of obtaining broad coverage for our products. To date, payors’ policies on 

coverage for our products have varied widely, including policies that allow broad coverage per the respective product’s prescribing information, policies 
that provide limited coverage and policies that have denied coverage. The majority of payors have policies that provide for case-by-case coverage or 
restricted coverage. Our revenue depends, in part, upon the extent to 

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which payors provide coverage for our products and the amount that payors, including government authorities or programs, private health insurers and 
other organizations, reimburse patients and healthcare providers for the cost of our products. 

Third Party Reimbursement and Pricing in the U.S. 

Commercial Insurance. Coverage and reimbursement of our products vary from commercial payor to commercial payor. Many commercial 

payors, such as managed care plans, manage access to FDA approved products, and may use drug formularies and medical policies (which may include 
specific coverage requirements such as prior authorization, re-authorization and achieving performance metrics under value-based contracts) to control 
utilization. Exclusion from or restriction in coverage can reduce product usage.

Medicaid. Our products are eligible to be reimbursed by Medicaid. Medicaid is a joint federal and state program that is administered by the states 
for low income and disabled beneficiaries. Under the Medicaid Drug Rebate Program, participating manufacturers are required to pay a rebate for each unit 
of product reimbursed under the state Medicaid programs. The amount of the rebate for each product is set by law and depends in part on the prices at 
which our products are sold to certain other purchasers and may be subject to an additional discount if certain pricing increases more than inflation. State 
Medicaid programs and Medicaid managed care plans can seek additional “supplemental” rebates from manufacturers in connection with favorable 
positioning on formularies. 

Medicare. Medicare is a federal program that is administered by the federal government that covers individuals age 65 and over, disabled 

individuals and individuals with certain conditions. Our products are eligible for reimbursement under Medicare Part B. Medicare Part B generally covers 
drugs that are usually administered by physicians or other clinicians. Medicare Part B pays for such drugs under a payment methodology based on the 
average sales price (“ASP”) of the drugs. Reimbursement levels and reimbursement methodologies have come under scrutiny and may be subject to 
change. See “Government Regulation – Healthcare and Other Reform.” The Centers for Medicare & Medicaid Services (“CMS”) are also increasingly 
bundling drug reimbursement into procedure costs, which can severely decrease the reimbursement rates for some manufacturers’ drugs. 

Federal Purchasers. Drug products are subject to discounted pricing when purchased by federal agencies via the Federal Supply Schedule 
(“FSS”). FSS participation is required for a drug product to be covered and reimbursed by certain federal agencies and for coverage under Medicaid, 
Medicare Part B and the Public Health Service (“PHS”) 340B drug pricing program. FSS pricing is negotiated periodically with the Department of Veterans 
Affairs. FSS pricing is intended not to exceed the price that a manufacturer charges its most-favored non-federal customer for its product. In addition, 
prices for drugs purchased by the Veterans Administration, Department of Defense (including drugs purchased by military personnel and dependents 
through the TRICARE retail pharmacy program), Coast Guard, and PHS are subject to a cap on pricing (known as the “federal ceiling price”) and may be 
subject to an additional discount if pricing increases more than the rate of inflation.

PHS 340B Drug Pricing Program. To maintain coverage of drugs under the Medicaid Drug Rebate Program and Medicare Part B, manufacturers 

are required to extend discounts to certain purchasers under the PHS 340B drug pricing program. Purchasers eligible for discounts include hospitals that 
serve a disproportionate share of financially needy patients, community health clinics and other entities that receive health services grants from the PHS. 

Healthcare and Other Reform. In the U.S., federal and state governments continue to propose and pass legislation designed to reform delivery of, 

or payment for, health care, which include initiatives to reduce the cost of healthcare. For example, in March 2010, the U.S. Congress enacted the Patient 
Protection and Affordable Care Act and the Health Care and Education Reconciliation Act (the “Healthcare Reform Act”), which expanded health care 
coverage through Medicaid expansion, implemented the “individual mandate” for health insurance coverage (by imposing a tax penalty on individuals who 
did not obtain insurance) and changed the coverage and reimbursement of drug products under government healthcare programs. Under the Trump 
administration, there have been ongoing efforts to modify or repeal all or certain provisions of the Healthcare Reform Act.  For example, tax reform 
legislation was enacted at the end of 2017 that eliminated the tax penalty established under the Healthcare Reform Act for individuals who do not maintain 
mandated health insurance coverage beginning in 2019. The Healthcare Reform Act has also been subject to judicial challenge. On June 17, 2021, the U.S. 
Supreme Court dismissed the latest judicial challenge to the Healthcare Reform Act brought by several states without specifically ruling on the 
constitutionality of the Healthcare Reform Act.

Beyond the Healthcare Reform Act, there have been ongoing healthcare reform efforts. Some recent healthcare reform efforts have sought to 

address certain issues related to the COVID-19 pandemic, including an expansion of telehealth coverage under Medicare and accelerated or advanced 
Medicare payments to healthcare providers. Other reform efforts affect pricing or payment for drug products. For example, the Medicaid Drug Rebate 
Program has been subject to statutory and regulatory changes and the discount that manufacturers of Medicare Part D brand name drugs must provide to 
Medicare Part D beneficiaries during the coverage gap increased from 50% to 70%. Additional reform efforts are likely. The Biden administration has 
focused on reforms that would address the high cost of drugs. In response to an Executive Order from President Biden, the Secretary of HHS issued a 
comprehensive plan for addressing high drug prices that describes a number of legislative approaches and identifies administrative tools to address the high 

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cost of drugs. Democrats also included drug pricing reform provisions reflecting elements of the plan in a broader proposed spending package in late 2021 - 
such as capping Medicare Part D patients out-of-pocket costs; establishing penalties for drug prices that increase faster than inflation in Medicare; and 
authorizing the federal government to negotiate prices on certain, select high cost drugs under Medicare Parts B and D.

Healthcare reform efforts have been and may continue to be subject to scrutiny and legal challenge. For example, revisions to regulations under 
the federal anti-kickback statute would remove protection for traditional Medicare Part D discounts offered by pharmaceutical manufacturers to pharmacy 
benefit managers and health plans. Pursuant to court order, the removal was delayed and recent legislation imposed a moratorium on implementation of the 
rule until January 1, 2026.

Adoption of new healthcare reform legislation at the federal or state level could affect demand for, or pricing of, our products or product 

candidates if approved for sale. We cannot predict, however, the ultimate content, timing or effect of any healthcare reform legislation or action, or its 
impact on us, and healthcare reform could increase compliance costs and may adversely affect our future business and financial results.

There have also been efforts by government officials or legislators to implement measures to regulate prices or payment for pharmaceutical 

products, including legislation on drug importation. Recently, there has been considerable public and government scrutiny of pharmaceutical pricing and 
proposals to address the perceived high cost of pharmaceuticals. There have also been recent state legislative efforts to address drug costs, which generally 
have focused on increasing transparency around drug costs or limiting drug prices. Certain state legislation has been subject to legal challenges. Adoption 
of new legislation regulating drug pricing at the federal or state level could further affect demand for, or pricing of, our products.

General legislative cost control measures may also affect reimbursement for our products. The Budget Control Act of 2011, as amended, resulted 
in the imposition of 2% reductions in Medicare (but not Medicaid) payments to providers in 2013 and remains in effect through 2030 (except May 1, 2020 
to March 31, 2022) unless additional Congressional action is taken. Any significant spending reductions affecting Medicare, Medicaid or other publicly 
funded or subsidized health programs that may be implemented and/or any significant taxes or fees that may be imposed on us could have an adverse 
impact on our results of operations.

Third Party Reimbursement and Pricing outside the U.S.

We currently have no products approved for marketing outside the U.S., other than a marketing authorization for EXONDYS 51 in Israel. We 

may need to conduct long-term pharmacoeconomic studies in order to demonstrate the cost-effectiveness of our products. In the EU and certain other 
territories, price controls and Health Technology Assessments for new, highly priced medicines are expected. Uncertainty exists about the pricing and 
reimbursement status of newly approved products in the EU. Criteria such as cost-effectiveness, cost per quality-adjusted life year, budget impact, or 
others, in addition to the clinical benefit, are often required to demonstrate added value or benefit of a drug and vary by country. Third party reimbursement 
limits may reduce the demand for our products. The pace of the application process in some countries could also delay commercial product launches. 
Gaining acceptance of our product pipeline and an economically viable reimbursement terms in the EU and other markets will require strong education and 
awareness efforts around Duchenne as well as strong data supporting its effectiveness and cost-effectiveness.

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Competition

The pharmaceutical and biotechnology industries are intensely competitive, and any product candidate developed by us would likely compete 

with existing drugs and therapies. There are many pharmaceutical companies, biotechnology companies, public and private universities, government 
agencies and research organizations that compete with us in developing various approaches to the treatment of rare, neuromuscular and other diseases. 
Many of these organizations have substantially greater financial, technical, manufacturing and marketing resources than we have. Several of them have 
developed or are developing therapies that could be used for treatment of the same diseases that we are targeting. In addition, some of these competitors 
have significantly greater commercial infrastructures than we have. Our ability to compete successfully will depend largely on: 

•

•

•

•

•

•

•

•

•

•

•

•

our ability to complete clinical development and obtain regulatory approvals for our product candidates; 

the efficacy, safety and reliability of our products and product candidates; 

the dosing, strength, convenience and other product profile attributes of our products and product candidates;

the timing and scope of regulatory approvals; 

product acceptance by physicians and other health-care providers; 

protection of our proprietary rights and the level of generic or innovative competition; 

the ability to have freedom to operate to commercialize our products and product candidates; 

our ability to supply commercial quantities of a product meeting FDA specifications to the market; 

the cost of supplying our products and product candidates; 

obtaining reimbursement for product use in approved indications; 

our ability to recruit and retain skilled employees; and 

the availability of substantial capital resources to fund development and commercialization activities.

EXONDYS 51, VYONDYS 53 and AMONDYS 45 were the first three disease modifying therapeutics approved by FDA for the treatment of 

Duchenne for patients with a confirmed mutation that is amenable to exon 51 skipping, exon 53 skipping or exon 45 skipping, respectively. However, in the 
field of Duchenne alone, these products and those in our pipeline face a variety of competitors who either have FDA approval or are being clinically 
developed for the treatment of Duchenne. For example, Nippon Shinyaku Co. Ltd. (“Nippon”) announced on August 13, 2020 that the FDA approved 
VILTEPSO (viltolarsen) injection for patients with Duchenne who are amenable to exon 53 skipping therapy. On March 25, 2020, Nippon announced that 
the Japanese Ministry of Health, Labor, and Welfare (“MHLW”) approved Viltepso Intravenous Infusion 250 mg (viltolarsen) for the treatment of patients 
with Duchenne who are amendable to exon 53 skipping therapy making it the first non-steroidal treatment for Duchenne approved in Japan. Nippon has 
announced plans to pursue global registration for viltolarsen.  

In addition, there are many companies who have announced plans to transition pre-clinical candidates to clinical development for the treatment 

of Duchenne, including the following: 

•

•

•

•

Wave Life Sciences (“Wave”) is developing oligonucleotides for the treatment of Duchenne. Wave was developing an exon 51 skipping 
product candidate for Duchenne, suvodirsen (WVE-210201), until on December 16, 2019, Wave announced the discontinuation of WVE-
210201. Wave more recently announced in September 2021 that it initiated dosing in a Phase 1b/2a clinical trial evaluating WVE-N531, its 
exon 53 skipping product candidate.

Daiichi Sankyo (“Daiichi”) announced a phase 1/2 clinical trial conducted in Japan for its exon 45 skipping oligonucleotide candidate, DS-
5141b. In April 2018, Daiichi announced top-line results of the Phase 1/2 clinical trial of DS-5141 and that Daiichi will continue to develop 
DS-5141b.  Daiichi is sponsoring a Phase 2 clinical trial of DS-5141b.   

Solid Biosciences, LLC (“Solid”) is investigating its micro-dystrophin gene transfer product candidate for Duchenne, SGT-001, in clinical 
trials. 

Pfizer Inc. (“Pfizer”), presented initial Phase 1b clinical data for its AAV-9 / mini-dystrophin gene transfer product candidate for Duchenne, 
PF-06939926/BMB-D0016, in June 2019. In January 2021, Pfizer announced the first dose of its Phase 3 CIFFREO study that will evaluate 
the efficacy and safety of PF-06939926 in boys with Duchenne. In December 2021, the FDA imposed a clinical hold on the investigational 
new drug application.

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There are several companies in addition to those mentioned above that are pursuing disease modifying programs for Duchenne that are at the pre-

clinical stage or clinical stage. These companies are pursuing oligonucleotides, gene transfer therapy or gene editing. Other companies continue to pursue 
development and approval of products for the treatment of Duchenne and their products may or may not prove to be safer and/or more efficacious than the 
products and product candidates in our Duchenne pipeline.  Regarding any of these competitors, it is unknown if clinical development of these or other 
compounds is planned or would be continued.

Additionally, companies have product candidates with mechanisms of action distinct from ours in different stages of development or approval in 

Duchenne which we believe could be seen as complementary to exon skipping and not a direct replacement of our products or product candidates at this 
time.

Several companies and institutions have also entered into collaborations or other agreements for the development of product candidates, 

including mRNA, gene (CRISPR, AAV, etc.) or small molecule therapies that are potential competitors to therapies being developed by us in the muscular 
dystrophy, neuromuscular, CNS and rare disease space.

We also believe that other biotechnology and pharmaceutical companies share a focus on RNA-targeted drug discovery and development. 

For additional information on the various risks posed by competition, refer to Part I, Item 1A. Risk Factors of this Annual Report on Form 10-K.

Human Capital Resources

Our urgent mission – to engineer precision genetic medicine for rare diseases that devastate lives and cut futures short – is dependent on our 

ability to attract, develop and retain the industry’s best and brightest talent across all dimensions of diversity. This understanding informs our approach to 
managing our human capital resources. 

General Information. As of December 31, 2021, we had 840 employees globally, 463 of whom hold advanced degrees. Of these employees, 503 

are engaged directly in research and development activities and 337 are in selling and general and administration. None of our employees in the U.S. are 
covered by collective bargaining agreements and we consider relations with our employees to be good.

Equity, diversity, and inclusion.  We promote diversity, inclusion and equity across the organization. In the area of gender diversity, 
representation of women has increased over the past several years: in 2018 and 2019, women made up 51% and 54% of our workforce, respectively, and in 
2020, this percentage increased to 55%. As of December 31, 2021, women made up 56% of our workforce. The number of women in leadership positions 
has also consistently increased. In 2017, women represented 35% of the leadership positions at the Director level and above. This percentage increased to 
36% in 2018, 44% in 2019, 47% as of December 31, 2020 and 48% as of December 31, 2021. In addition, as of December 31, 2021, women held 28.6% of 
the seats of our Board of Directors, including the Chair of the Board.

Racial and ethnic diversity has also increased in the past few years, from 23% of our workforce being racially/ethnically diverse in 2017 and 

2018, to 26% in 2019.  As of December 31, 2020, this number increased to 29%, and again to 30% as of December 31, 2021. 

As of December 31, 2021, 50% of our Executive Committee, which represents the most senior leadership positions in the Company, is diverse 

based on gender and ethnicity.

Compensation, Benefits and Ongoing Professional Development. We are committed to rewarding, supporting, and developing the employees 
who make it possible to deliver on our strategy. To that end, we offer a comprehensive total rewards package that includes market-competitive pay, broad-
based equity grants and bonuses, healthcare benefits, retirement savings plans, paid time off and family leave, caregiving support, fitness subsidies, and an 
Employee Assistance Program. We also offer robust learning opportunities for employees at every stage in their career. For example, in 2020 we ran our 
leadership development program, ELEVATE, the participants of which reflect ethnic, racial and gender diversity. In 2021, we launched Pluma Coaching, 
which offers virtual, one on one professional development and executive coaching. 

We continue to adapt to the new challenges of the COVID-19 pandemic, with solutions such as remote work, flexible schedules, childcare 

assistance, paid time off for COVID-19 related health and family care needs, and sessions focused on resilience and happiness in uncertain times.  At the 
same time, we continue to protect our facility-dependent employees, including those needed 

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to maintain manufacturing and clinical research, by instituting strict protocols designed to ensure they remain healthy and feel supported and safe in our 
facilities.       

General Corporate Information

We were originally incorporated in the State of Oregon on July 22, 1980, and on June 6, 2013, we reincorporated in the State of Delaware. Our 

principal executive offices are located at 215 First Street, Suite 415, Cambridge, MA 02142 and our telephone number is (617) 274-4000. Our common 
stock is quoted on the Nasdaq Global Select Market under the symbol “SRPT”. 

While we achieve revenue from our products in the U.S. and through distribution of eteplirsen, golodirsen and casimersen through our EAP 
outside the U.S., we are likely to continue to incur operating losses in the near term associated with our ongoing operations, research and development 
activities and potential business development activities. For more information about our revenues and operating losses, see Item 7, Management’s 
Discussion and Analysis of Financial Condition and Results of Operations.

As of December 31, 2021, we had approximately $2,125.8 million of cash, cash equivalents and investments, consisting of $2,115.9 million of 

cash and cash equivalents and $9.9 million of long-term restricted cash and investments. We believe that our balance of cash, cash equivalents and 
investments is sufficient to fund our current operational plan for at least the next twelve months. In addition to pursuing additional cash resources through 
public or private financings, we may also seek to enter into contracts, including collaborations or licensing agreements with respect to our technologies, 
with third parties, including government entities.

Where You Can Find Additional Information

We make available free of charge through our corporate website, www.sarepta.com, our annual reports, quarterly reports, current reports, proxy 

statements and all amendments to those reports as soon as reasonably practicable after such material is electronically filed or furnished with the SEC. These 
reports may also be obtained without charge by submitting a written request via mail to Investor Relations, Sarepta Therapeutics, Inc., 215 First Street, 
Suite 415, Cambridge, MA 02142 or by e-mail to investorrelations@sarepta.com. Our internet website and the information contained therein or 
incorporated therein are not intended to be incorporated into this Annual Report on Form 10-K. In addition, the Securities and Exchange Commission (the 
“SEC”) maintains an Internet site that contains reports, proxy and information statements, and other information regarding reports that we file or furnish 
electronically with the SEC at www.sec.gov.

We have adopted a Code of Business Conduct and Ethics and written charters for our Audit Committee, Compensation Committee and 
Nominating and Corporate Governance Committee.  Each of the foregoing is available on our website at www.sarepta.com under “For Investors—
Corporate Governance.”  In accordance with SEC rules, we intend to disclose any amendment (other than any technical, administrative, or other non-
substantive amendment) to the above code, or any waiver of any provision thereof with respect to any of our executive officers, on our website within four 
business days following such amendment or waiver.  In addition, we may use our website as a means of disclosing material non-public information and for 
complying with our disclosure obligations under Regulation Fair Disclosure promulgated by the SEC. These disclosures will be included on our website 
under the “For Investors” section.

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Item 1A. Risk Factors.

Set forth below and elsewhere in this report and in other documents we file with the SEC are descriptions of risks and uncertainties that could 

cause actual results to differ materially from the results contemplated by the forward-looking statements contained in this report. Because of the following 
factors, as well as other variables affecting our operating results, past financial performance should not be considered a reliable indicator of future 
performance and investors should not use historical trends to anticipate results or trends in future periods. The risks and uncertainties described below are 
not the only ones facing us. Other events that we do not currently anticipate or that we currently deem immaterial also affect our results of operations and 
financial condition.

Risks Related to Our Business

We are highly dependent on the commercial success of our products in the U.S. and we may not be able to meet expectations with respect to 

sales of our products or attain profitability and positive cash-flow from operations.

The FDA granted accelerated approval for EXONDYS 51, VYONDYS 53 and AMONDYS 45, as therapeutic treatments for Duchenne in 

patients who have a confirmed mutation in the dystrophin gene that is amenable to exon 51, exon 53 and exon 45 skipping, respectively. EXONDYS 51 is 
currently commercially available in the U.S. and Israel only, and VYONDYS 53 and AMONDYS 45 are currently commercially available in the U.S. only, 
although they are available in additional countries through our EAP. The commercial success of our products continues to depend on a number of factors 
attributable to one of our products or the products of our competitors, including, but not limited to: 

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the effectiveness of our sales, managed markets, marketing efforts and support for our products;

the generation and dissemination of new data analyses and the consistency of any new data with prior results, whether they support a 
favorable safety, efficacy and effectiveness profile of our products and any potential impact on our FDA accelerated approval status 
and/or FDA package insert for our products;

the effectiveness of our ongoing commercialization activities, including negotiating and entering into any additional commercial, supply 
and distribution contracts, ongoing manufacturing efforts and hiring any additional personnel as needed to support commercial efforts;

our ability to timely comply with FDA post-marketing requirements and commitments, including through successfully conducting 
additional studies that confirm clinical efficacy, effectiveness and safety of our products and acceptance of the same by the FDA and 
medical community since continued approval may be contingent upon verification of a clinical benefit in confirmatory trials;

the occurrence of any side effects, adverse reactions or misuse, or any unfavorable publicity in these areas;

the generation of evidence describing payers, patients and/or societal value of our products; 

whether we can consistently manufacture our products and product candidates at acceptable costs;

the rate and consistency with which our products are prescribed by physicians, which depends on physicians’ views on the safety, 
effectiveness and efficacy of our products;

our ability to secure and maintain adequate reimbursement for our products, including the duration of the prior-authorization as well as 
the number and duration of re-authorization processes required for patients who initially obtained coverage by third parties, including by 
government payors, managed care organizations and private health insurers;

our ability to obtain and maintain patent protection for our products, to preserve our trade secrets, to prevent third parties from infringing 
on our proprietary rights and to operate without infringing on the proprietary rights of third parties;

the development, commercialization or pricing of competing products or therapies for the treatment of Duchenne, or its symptoms, and 
the existence of competing clinical trials;

our ability to increase awareness of the importance of genetic testing and knowing/understanding Duchenne mutations, and identifying 
and addressing procedural barriers to obtaining therapy;

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•

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our ability to remain compliant with laws and regulations that apply to us and our commercial activities;

the actual market-size, ability to identify patients and the demographics of patients eligible for our products, which may be different than 
expected;

the sufficiency of our drug supply to meet commercial and clinical demands and standards, which are negatively impacted by various 
factors, including when our projections on the potential number of amenable patients and their average weight are inaccurate; the potential 
impacts of the COVID-19 pandemic; if regulatory requirements increase our drug supply needs; if our current drug supply is destroyed or 
negatively impacted at our manufacturing sites, storage sites or in transit; failure to meet cGMP requirements; or if we encounter delays 
expanding the number of patients on our products and portions of our products’ supply expire before sale;

our ability to obtain regulatory approvals to commercialize our product candidates, and to commercialize our products in markets outside 
of the U.S.; 

the process leading to a patient’s first infusion of our products may be slower for certain patients. For example, the time to first infusion 
may take longer if a patient chooses to put in an intravenous port, which eases access to the vein. Delays in the process prior to first 
infusion could negatively impact the sales of our products; and

the exercise by Roche of its option to obtain an exclusive license to commercialize one or more of our Duchenne products beyond SRP-
9001 outside of the U.S. and Roche’s subsequent commercialization efforts. 

In addition, the ongoing COVID-19 pandemic has presented challenges and risks. For example, the response to COVID-19 by healthcare 

providers has made it difficult for some patients to receive infusions or initiate treatment with our commercial products.  The need to prioritize rated orders 
issued by the Federal Emergency Management Agency pursuant to the U.S. Defense Production Act could also impact the manufacturing, supply chain and 
distribution of our products and product candidates. For this and other reasons, such as delays in processing reauthorizations and modifications to program 
benefits by insurers, we expect that COVID-19 will reduce our revenue from commercial product sales. 

We experience significant fluctuations in sales of our products from period to period and, ultimately, we may never generate sufficient revenues 

from our products to reach or maintain profitability or sustain our anticipated levels of operations. 

Even though EXONDYS 51, VYONDYS 53 and AMONDYS 45 have received accelerated approval by the FDA, they face future post-

approval development and regulatory requirements, which will present additional challenges we will need to successfully navigate.

The accelerated approvals for EXONDYS 51, VYONDYS 53 and AMONDYS 45 granted by the FDA were based on an increase in the 

surrogate biomarker of dystrophin in skeletal muscles observed in some patients treated with these products. These products will be subject to ongoing 
FDA requirements governing labeling, packaging, storage, advertising, promotion and recordkeeping, and we are required to submit additional safety, 
efficacy and other post-marketing information to the FDA.

Under the accelerated approval pathway, continued approval may be contingent upon verification of a clinical benefit in confirmatory trials. 

These post-approval requirements and commitments may not be feasible and/or could impose significant burdens and costs on us; could negatively impact 
our development, manufacturing and supply of our products; and could negatively impact our financial results. Failure to meet post-approval commitments 
and requirements, including completion of enrollment and in particular, any failure to obtain positive safety and efficacy data from our ongoing and 
planned studies of our products, would lead to negative regulatory action from the FDA and/or withdrawal of regulatory approval of EXONDYS 51, 
VYONDYS 53 or AMONDYS 45. 

Manufacturers of drug products and their facilities are subject to continual review and periodic inspections by the FDA and other regulatory 

authorities for compliance with cGMP regulations. Drug product manufacturers are required to continuously monitor and report adverse events from 
clinical trials and commercial use of the product. If we or a regulatory agency discover previously unknown adverse events or events of unanticipated 
severity or frequency, a regulatory agency may require labeling changes, implementation of risk evaluation and mitigation strategy program, or additional 
post-marketing studies or clinical trials.  If we or a regulatory agency discover previously unknown problems with a product, such as problems with a 
facility where the API or drug product is manufactured or tested, a regulatory agency may impose restrictions on that product and/or the manufacturer, 
including removal of specific product lots from the market, withdrawal of the product from the market, suspension of manufacturing or suspension of 
clinical trials using the same manufacturing materials. Sponsors of drugs approved under FDA accelerated approval provisions also are required to submit 
to the FDA, at least 30 days before initial use, all promotional materials intended for use after the first 120 days following marketing approval. Failure by 
us or the manufacturing facilities for our products to comply with applicable regulatory requirements, may lead a regulatory agency to:

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issue warning letters or untitled letters;

seek an injunction or impose civil or criminal penalties or monetary fines;

suspend or withdraw or alter the conditions of our marketing approval;

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mandate modifications to promotional materials or require us to provide corrective information to healthcare practitioners;

suspend any ongoing clinical trials;

require us to enter into a consent decree, which can include imposition of various fines, reimbursements for inspection costs, required due 
dates for specific actions and penalties for noncompliance;

refuse to approve pending applications or supplements to applications submitted by us;

suspend or impose restrictions on operations, including costly new manufacturing requirements;

seize or detain products, refuse to permit the import or export of products or require us to initiate a product recall; or

refuse to allow us to enter into supply contracts, including government contracts.

We are subject to uncertainty relating to reimbursement policies which, if not favorable, could hinder or prevent the commercial success of 

our products and/or product candidates.

Our ability to successfully maintain and/or increase sales of our products in the U.S. depends in part on the coverage and reimbursement levels 
set by governmental authorities, private health insurers and other third-party payors. Third party payors are increasingly challenging the effectiveness of 
and prices charged for medical products and services. We may not be able to obtain or maintain adequate third-party coverage or reimbursement for our 
products, and/or we may be required to provide discounts or rebates on our products in order to obtain or maintain adequate coverage.

We expect that private insurers will continue to consider the efficacy, effectiveness, cost-effectiveness and safety of our products, including any 

new data and analyses that we are able to collect and make available in a compliant manner, in determining whether to approve reimbursement for our 
products and at what levels. If there are considerable delays in the generation of new evidence or if any new data and information we collect is not 
favorable, third party insurers may make coverage decisions that negatively impact sales of our products. We continue to have discussions with payors, 
some of which may eventually deny coverage. We may not receive approval for reimbursement of our products from additional insurers on a satisfactory 
rate or basis, in which case our business would be materially adversely affected. In addition, obtaining these approvals can be a time consuming and 
expensive process. Our business would be materially adversely affected if we are not able to maintain favorable coverage decisions and/or fail to receive 
additional favorable coverage decisions from third party insurers, in particular during re-authorization processes for patients that have already initiated 
therapy. Our business could also be adversely affected if government health programs, private health insurers, including managed care organizations, or 
other reimbursement bodies or payors limit the indications for which our products will be reimbursed or fail to recognize accelerated approval and 
surrogate endpoints as clinically meaningful.

In addition, the impact of the ongoing COVID-19 pandemic has resulted in delays in processing reauthorizations and modifications to program 
benefits by insurers, making it difficult for patients to obtain or maintain favorable coverage decisions for our products. Furthermore, we cannot predict to 
what extent the COVID-19 pandemic, depending on its scale and duration, may disrupt global healthcare systems and access to our products or result in a 
widespread loss of individual health insurance coverage due to unemployment, a shift from commercial payor coverage to government payor coverage, or 
an increase in demand for patient assistance and/or free drug programs, any of which would adversely affect access to our products and our net sales.

In some foreign countries, particularly Canada and the countries of Europe, Latin America and Asia Pacific, the pricing of prescription 
pharmaceuticals is subject to strict governmental control. In these countries, pricing negotiations with governmental authorities can take 12 to 24 months or 
longer after the receipt of regulatory approval and product launch. In order to obtain favorable reimbursement for the indications sought or pricing approval 
in some countries, we may be required to collect additional data, including conducting additional studies. Furthermore, several countries around the world 
have implemented government measures to either freeze or reduce pricing of pharmaceutical products. If reimbursement for our products is unavailable in 
any country in which reimbursement is sought, limited in scope or amount, or if pricing is set at unsatisfactory levels, our business could be materially 
harmed. In addition, many foreign countries are referencing to other countries’ official public list price, hence an unsatisfactory price level in one country 
could consequently impinge negatively upon overall revenue.

We expect to experience pricing pressures in connection with the sale of our current and future products due to a number of factors, including 

current and future healthcare reforms and initiatives by government health programs and private insurers (including managed care plans) to reduce 
healthcare costs, the scrutiny of pharmaceutical pricing, the ongoing debates on reducing government spending and additional legislative proposals. These 
healthcare reform efforts or any future legislation or regulatory actions aimed at controlling and reducing healthcare costs, including through measures 
designed to limit reimbursement, restrict access or impose 

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unfavorable pricing modifications on pharmaceutical products, could impact our and our partners’ ability to obtain or maintain reimbursement for our 
products at satisfactory levels, or at all, which could materially harm our business and financial results.

Additionally, our gene therapy product candidates represent novel approaches to treatment that will call for new levels of innovation in both 

pricing, reimbursement, payment and drug access strategies. Current reimbursement models may not accommodate the unique factors of our gene therapy 
product candidates, including high up-front costs, lack of long-term efficacy and safety data and fees associated with complex administration, dosing and 
patient monitoring requirements. Hence, it may be necessary to restructure approaches to payment, pricing strategies and traditional payment models to 
support these therapies. 

The downward pressure on healthcare costs in general has become intense. As a result, increasingly high barriers are being erected to the entry of 

new products. If we are unable to obtain adequate levels of reimbursement, our ability to successfully market and sell our products and product candidates 
will be harmed. The manner and level at which reimbursement is provided for services related to our products and product candidates (e.g., for 
administration of our products to patients) is also important. Inadequate reimbursement for such services may lead to physician resistance and limit our 
ability to market or sell our products.

Healthcare policy reform and other governmental and private payor initiatives may have an adverse effect upon, and could prevent 

commercial success of our products and product candidates.

The U.S. government and individual states continue to aggressively pursue healthcare reform, as evidenced by efforts in recent years to modify 

or repeal the Affordable Care Act and ongoing attempts to control and/or lower the cost of prescription drugs and biologics. The Affordable Care Act 
substantially changed the way healthcare is financed by both governmental and private insurers and contains a number of provisions that affect coverage 
and reimbursement of drug products and/or that could potentially reduce the demand for pharmaceutical products such as increasing drug rebates under 
state Medicaid programs for brand name prescription drugs and extending those rebates to Medicaid managed care and assessing a fee on manufacturers 
and importers of brand name prescription drugs reimbursed under certain government programs, including Medicare and Medicaid. Other aspects of 
healthcare reform, such as expanded government enforcement authority and heightened standards that could increase compliance-related costs, could also 
affect our business. The Affordable Care Act has been subject to modification and additional modifications may occur.  There are, and may continue to be, 
judicial challenges to those efforts. Legislative, Administrative, and private payor efforts to control drug costs span a range of proposals, including drug 
price negotiation, Medicare Part D redesign, drug price inflation rebates, international mechanisms, generic drug promotion and anticompetitive behavior, 
manufacturer reporting, and reforms that could impact therapies utilizing the accelerated approval pathway. We cannot predict the ultimate content, timing 
or effect of any changes to the Affordable Care Act or other federal and state healthcare policy reform efforts including those aimed at drug pricing. There 
is no assurance that federal or state health care reform will not adversely affect our future business and financial results, and we cannot predict how future 
federal or state legislative, judicial or administrative changes relating to healthcare policy will affect our business.

The U.S. government, state legislatures and foreign governments have shown significant interest in implementing cost-containment programs to 

limit the growth of government-paid healthcare costs, including price controls, waiver from Medicaid drug rebate law requirements, restrictions on 
reimbursement and requirements for substitution of generic products for branded prescription drugs and the introduction of international reference pricing 
in the U.S.  We anticipate that the U.S. Congress, state legislatures and the private sector will continue to consider and may adopt healthcare policies 
intended to curb rising healthcare costs. These cost containment measures may include implementation or modification of:

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controls on government funded reimbursement for drugs;

caps or mandatory discounts under certain government sponsored programs;

controls on healthcare providers;

challenges to the pricing of drugs or limits or prohibitions on reimbursement for specific products through other means;

reform of drug importation laws;

delegation of decision making to state Medicaid agencies and waiver of reimbursement requirements;

expansion of use of managed care systems in which healthcare providers contract to provide comprehensive healthcare for a fixed cost per 
person; and

prohibition on direct-to-consumer advertising or drug marketing practices.

We are unable to predict what additional legislation, regulations or policies, if any, relating to the healthcare industry or third party coverage and 

reimbursement may be enacted in the future or what effect such legislation, regulations or policies would have on 

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our business. Any cost containment measures, including those listed above, or other healthcare system reforms that are adopted, could significantly 
decrease the available coverage and the price we might establish for our products and product candidates, which would have an adverse effect on our net 
revenues and operating results.

Our products may not be widely adopted by patients, payors or healthcare providers, which would adversely impact our potential profitability 

and future business prospects.

The commercial success of our products, particularly in the U.S., depends upon the level of market adoption by patients, payors and healthcare 

providers. If our products do not achieve an adequate level of market adoption for any reason, or if market adoption does not persist, our potential 
profitability and our future business prospects will be severely adversely impacted. The degree of market acceptance of our products depends on a number 
of factors, including:

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our ability to demonstrate to the medical and payor community, including specialists who may purchase or prescribe our products, the 
clinical efficacy, effectiveness and safety of our products as the prescription products of choice for their respective indications;

the effectiveness of our sales and marketing organizations and distribution networks;

the ability of patients or providers to be adequately reimbursed for our products in a timely manner from government and private payors;

the ability to timely demonstrate to the satisfaction of payors real world effectiveness and the economic, humanistic and societal benefits 
of our products;

the actual and perceived efficacy and safety profile of our products, particularly if unanticipated adverse events related to our products’ 
treatment arise and create safety concerns among potential patients or prescribers or if new data and analyses we obtain for our products 
do not support, or are interpreted by some parties to not support, the efficacy of our products; and

the efficacy and safety of our other exon-skipping and gene therapy product candidates and third parties’ competitive therapies.

We may not be able to expand the global footprint of our products outside of the U.S.

Even though EXONDYS 51 was approved for marketing in the U.S. and in Israel, and VYONDYS 53 and AMONDYS 45 were approved for 

marketing in the U.S., we may not receive approval to commercialize these products in additional countries. In November 2016, we submitted a MAA for 
eteplirsen to the EMA and the application was validated in December 2016. As we announced on June 1, 2018, the CHMP of the EMA adopted a negative 
opinion for eteplirsen. In September 2018, the CHMP of the EMA confirmed its negative opinion for eteplirsen, and the EC adopted the CHMP opinion in 
December 2018.

In order to market any product in a country outside of the U.S., we must comply with numerous and varying regulatory requirements for 
approval in those countries regarding demonstration of evidence of the product’s safety and efficacy and governing, among other things, labeling, 
distribution, advertising, and promotion, as well as pricing and reimbursement of the product. Obtaining marketing approval in a country outside of the 
U.S. is an extensive, lengthy, expensive and uncertain process, and the regulatory authority may reject an application or delay, limit or deny approval of any 
of our products for many reasons, including:

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we may not be able to demonstrate to the satisfaction of regulatory authorities outside the U.S. the risk benefit of our products;

the results of clinical trials may not meet the level of statistical or clinical significance required for approval by regulatory authorities 
outside the U.S.;

regulatory authorities outside the U.S. may disagree with the adequacy (number, design, size, controls, conduct or implementation) of our 
clinical trials prior to granting approval, and we may not be able to generate the required data on a timely basis, or at all;

regulatory authorities outside the U.S. may conclude that data we submit to them fail to demonstrate an appropriate level of safety or 
efficacy of our products, or that our products’ respective clinical benefits outweigh their safety risks;

regulatory authorities outside the U.S. may not accept data generated at our clinical trial sites or require us to generate additional data or 
information;

regulatory authorities outside the U.S. may impose limitations or restrictions on the approved labeling of our products, thus limiting 
intended users or providing an additional hurdle for market acceptance of the product;

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regulatory authorities outside the U.S. may identify deficiencies in the manufacturing processes, or may require us to change our 
manufacturing process or specifications; and 

regulatory authorities outside the U.S. may adopt new or revised approval policies and regulations.

Approval procedures vary among countries and can involve additional product testing and additional administrative review periods. The time 

required to obtain approval in other countries might differ significantly from that required to obtain approval in the U.S. In particular, in many foreign 
countries, it is required that a product receives pricing and reimbursement approval before the product can be distributed commercially. Many foreign 
countries undertake cost-containment measures that could affect pricing or reimbursement of our products. This can result in substantial delays, and the 
price that is ultimately approved in some countries may be lower than the price for which we expect to offer our products.

Marketing approval in one country does not ensure marketing approval in another, but a failure or delay in obtaining marketing approval in one 

country may have a negative effect on the approval process in others. Failure to obtain marketing approval in other countries or any delay or setback in 
obtaining such approval would impair our ability to develop foreign markets for our products and could adversely affect our business and financial 
condition. In addition, failure to obtain approval in one country or area may affect sales under the EAP in other countries or areas. Even if we are successful 
in obtaining regulatory approval of our products in additional countries, our revenue earning capacity will depend on commercial and medical 
infrastructure, pricing and reimbursement negotiations and decisions with third party payors, including government payors.

In addition, we have granted Roche an exclusive option to obtain an exclusive license to commercialize certain products, including eteplirsen, 

golodirsen and casimersen, outside of the U.S.  If this option is exercised, Roche will have sole control over and decision-making authority with respect to 
the commercialization of such products outside the U.S.

We cannot predict whether historical revenues from eteplirsen, golodirsen and casimersen through our EAP outside the U.S. will continue or 

whether we will be able to continue to distribute eteplirsen, golodirsen and casimersen through our EAP.

We established a global EAP for eteplirsen, golodirsen and casimersen in some countries where these products currently have not been approved. 

While we generate revenue from the distribution of these products through our EAP, we cannot predict whether historical revenues from this program will 
continue, whether we will be able to continue to distribute our products through our EAP, or whether revenues will exceed revenues historically generated 
from sales through our EAP. Reimbursement through national EAPs may cease to be available if authorization for an EAP expires or is terminated. For 
example, healthcare providers in EAP jurisdictions may not be convinced that their patients benefit sufficiently from our products or alternatively, may 
prefer to wait until such time as our products are approved by a regulatory authority in their country before prescribing any of our products. Even if a 
healthcare provider is interested in obtaining access to our products for its patient through the EAP, the patient will not be able to obtain access to our 
products if funding for the drug is not secured.

Any failure to maintain revenues from sales of eteplirsen, golodirsen or casimersen through our EAP and/or to generate revenues from 

commercial sales of these products exceeding historical sales through our EAP could have a material adverse effect on our business, financial condition, 
results of operations and growth prospects.

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Failure to obtain or maintain regulatory exclusivity for our products could result in our inability to protect our products from competition 

and our business may be adversely impacted.  If a competitor obtains an authorization to market the same or substantially same product before a 
product of ours is authorized in a given country and is granted regulatory exclusivity, then our product may not be authorized for sale as a result of the 
competitor’s regulatory exclusivity and as a result, our investment in the development of that product may not be returned.

In addition to any patent protection, we rely on various forms of regulatory exclusivity to protect our products. During the development of our 
products, we anticipate any one form of regulatory exclusivities becoming available upon approval of our products. Implementation and enforcement of 
regulatory exclusivity, which may consist of regulatory data protection and market protection, varies widely from country to country.  Failure to qualify for 
regulatory exclusivity, or failure to obtain or maintain the extent or duration of such protections that we expect in each of the markets for our products due 
to challenges, changes or interpretations in the law or otherwise, could affect our revenues for our products or our decision on whether to market our 
products in a particular country or countries or could otherwise have an adverse impact on our results of operations.  We are not guaranteed to receive or 
maintain regulatory exclusivity for our current or future products, and if our products that are granted orphan status were to lose their status as orphan drugs 
or the data or marketing exclusivity provided for orphan drugs, our business and operations could be adversely affected.

Due to the nature of our products and product candidate pipeline, in addition to new chemical entity exclusivity and new biologic exclusivity, 

orphan drug exclusivity is especially important for our products that are eligible for orphan drug designation.  For eligible products, we plan to rely on 
orphan drug exclusivity to maintain a competitive position.  If we do not have adequate patent protection for our products, then the relative importance of 
obtaining regulatory exclusivity is even greater.  While orphan status for any of our products, if granted or maintained, would provide market exclusivity 
for the time periods specified above upon approval, we would not be able to exclude other companies from obtaining regulatory approval of products using 
the same or similar active ingredient for the same indication during or beyond the exclusivity period applicable to our product on the basis of orphan drug 
status (e.g., seven years in the U.S.).  For example, the exclusivity period for EXONDYS 51 will end in September 2023. Orphan drug designation neither 
shortens the development time or regulatory review time of a drug, nor gives the drug any advantage in the regulatory review or approval process.

In addition, we may face risks with maintaining regulatory exclusivities for our products, and our protection may be circumvented, even if 

maintained.  For instance, orphan drug exclusivity in the U.S. may be rescinded if (i) an alternative, competing product demonstrates clinical superiority to 
our product with orphan exclusivity; or (ii) we are unable to assure the availability of sufficient quantities of our orphan products to meet the needs of 
patients.  Moreover, competitors may receive approval of different drugs or biologics for indications for which our prior approved orphan products have 
exclusivity.  Orphan drug exclusivity in Europe may be modified for several reasons, including a significant change to the orphan medicinal product 
designations or status criteria after-market authorization of the orphan product (e.g., product profitability exceeds the criteria for orphan drug designation), 
problems with the production or supply of the orphan drug, or a competitor drug, although similar, is safer, more effective or otherwise clinically superior 
than the initial orphan drug.  Thus, other companies may have received, or could receive, approval to market a product candidate that is granted orphan 
drug exclusivity for the same drug or similar drug and same orphan indication as any of our product candidates for which we plan to file an NDA, BLA or 
MAA.   If that were to happen, our prior approved orphan products may face competition and any pending NDA, BLA or MAA for our product candidate 
for that indication may not be approved until the competing company’s period of exclusivity has expired in the U.S. or the EU, as applicable. For example, 
in September 2021, the FDA issued guidance concerning its position on interpreting when gene therapy products would be considered the “same” or 
“different” for purposes of orphan drug exclusivity. The guidance states that if two gene therapy products have or use different vectors, the FDA generally 
intends to consider them to be “different” drugs.  Further, according to the guidance, the FDA generally intends to consider vectors from the same viral 
group (e.g., adeno-associated virus 2 (AAV2) vs. adeno-associated virus 5 (AAV5)) to be different, when the differences between the vectors impact factors 
such as tropism, immune response avoidance, or potential insertional mutagenesis.  However, there is considerable uncertainty as to the interpretation of 
these guidelines.  As illustrated by this guidance, orphan drug exclusivity as applied to gene therapy products is an evolving area subject to change and 
interpretation by the FDA and therefore, we cannot be certain as to how the FDA will apply those rules to our products.

If we are unable to successfully maintain and further develop internal commercialization capabilities, sales of our products may be 

negatively impacted.

We have hired and trained a commercial team and put in the organizational infrastructure we believe we need to support the commercial success 

of our products in the U.S. Factors that may inhibit our efforts to maintain and further develop commercial capabilities include:

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an inability to retain an adequate number of effective commercial personnel;

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an inability to train sales personnel, who may have limited experience with our company or our products, to deliver a consistent message 
regarding our products and be effective in educating physicians on how to prescribe our products;

an inability to equip sales personnel with compliant and effective materials, including medical and sales literature to help them educate 
physicians and our healthcare providers regarding our products and their proper administration and educate payors on the safety, efficacy 
and effectiveness profile of our products to support favorable coverage decisions;

unforeseen costs and expenses associated with maintaining and further developing an independent sales and marketing organization; and

restrictions on the ability of our employees to perform their jobs due to the COVID-19 pandemic, such as quarantines and self-isolations.

If we are not successful in maintaining an effective commercial, sales and marketing infrastructure, we will encounter difficulty in achieving, 

maintaining or increasing projected sales of our products in the U.S., which would adversely affect our business and financial condition.

The patient population suffering from Duchenne, LGMDs, and CMT 1A is small and has not been established with precision. If the actual 

number of patients is smaller than we estimate, our revenue and ability to achieve profitability may be adversely affected.

Duchenne, LGMD, and CMT 1A are rare, fatal genetic disorders. Duchenne affects an estimated one in approximately every 3,500 to 5,000 

males born worldwide, of which up to 13% are estimated to be amenable to exon 51 skipping, up to 8% are estimated to be amenable to exon 53 skipping 
and up to 8% are estimated to be amenable to exon 45 skipping. LGMDs as a class affect an estimated range of approximately one in every 14,500 to one 
in every 123,000 individuals. CMT is a group of peripheral nerve disorders affecting approximately one in every 2,500 individuals. CMT type 1A affects 
approximately 50,000 patients in the U.S. Our estimates of the size of these patient populations are based on limited number of published studies as well as 
internal analyses. Various factors may decrease the market size of our products and product candidates, including the severity of the disease, patient 
demographics and the response of patients’ immune systems to our products and product candidates. If the results of these studies or our analysis of them 
do not accurately reflect the relevant patient population, our assessment of the market may be inaccurate, making it difficult or impossible for us to meet 
our revenue goals, or to obtain and maintain profitability.  

We face intense competition and rapid technological change, which may result in other companies discovering, developing or 

commercializing competitive products.

The biotechnology and pharmaceutical industries are highly competitive and subject to significant and rapid technological change. We are aware 

of many pharmaceutical and biotechnology companies that are actively engaged in research and development in areas in which our products and product 
candidates are aimed. Some of these competitors are developing or testing product candidates that now, or may in the future, compete directly with our 
products or product candidates. For example, we face competition in the field of Duchenne by third parties who are developing or who had once developed: 
(i) exon skipping product candidates, such as Wave Life Sciences (notably for exons 51 and 53), Nippon Shinyaku (notably for exon 44 and exon 53, for 
which it has received FDA approval for its product Viltepso (viltolarsen)), Daiichi Sankyo (notably for exon 45), Dyne Therapeutics pursuing antibody-
oligonucleotide conjugates for exons 44, 45, 51, and 53, Avidity Biosciences pursuing antibody-oligonucleotide conjugates for exons 44, 45 and 51),  
Entrada Therapeutics (notably for exon 44), Audentes Therapeutics, Inc. (acquired by Astellas Pharma) pursuing AAV vector delivery of oligonucleotides 
(for exons 2, 51 and 53), PepGen (notably for exon 51) and BioMarin (BMN-351 for exon 51); (ii) gene therapies that express micro-dystrophin or mini-
dystrophin, such as Pfizer, Solid Biosciences (in partnership with Ultragenyx), Regenxbio and Bristol-Myers Squibb; (iii) gene editing, including 
CRISPR/Cas 9 approaches, such as Vertex Pharmaceuticals, CRISPR Therapeutics, Editas Medicine and Precision Biosciences (in partnership with Eli 
Lilly); (iv) other disease modifying approaches, such as PTC Therapeutics, which has a small molecule candidate, ataluren, that targets nonsense mutations; 
and (v) other approaches that may be palliative in nature or potentially complementary with our products and product candidates and that are or were once 
being developed by Santhera, Catabasis, Fibrogen, ReveraGen, Capricor Therapeutics, BioPhytis, Mallinckrodt, Antisense Therapeutics and Edgewise 
Therapeutics.  Although BioMarin announced on May 31, 2016 its intent to discontinue clinical and regulatory development of drisapersen as well as its 
other clinical stage candidates, BMN 044, BMN 045 and BMN 053, then-currently in Phase 2 studies for distinct forms of Duchenne, it further announced 
in 2021 its plans to submit an IND for BMN-351, an oligonucleotide therapy.  In addition, while Wave announced its intention to discontinue development 
of suvodirsen and suspend development of WVE-N531, it has announced that it commenced clinical development for its exon 53 oligonucleotide, WVE-
N531.

In addition, we are aware of many pharmaceutical and biotechnology companies that are actively engaged in research and development using 
platform technologies that may be viewed as competing with ours including those companies mentioned immediately above, as well as other companies 
including, but not limited to Alnylam Pharmaceuticals, Inc., Tekmira Pharmaceuticals Corp., Deciphera Pharmaceuticals, Ionis Pharmaceuticals, Inc., 
Roche Innovation Center Copenhagen (formerly Santaris Pharma A/S), Takeda, Biogen, Moderna Therapeutics, Stoke Therapeutics, Fulcrum Therapeutics, 
Synthena AG, DTx Pharma, PYC Therapeutics, and Sanofi. Additionally, several companies and institutions have entered into collaborations or other 
agreements for the development of product candidates, including mRNA, gene therapy and gene editing (CRIPSR and AAV, among others) and small 
molecule therapies that are potential competitors for therapies being developed in the muscular dystrophy, neuromuscular and rare 

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disease space, including, but not limited to, Astellas Pharma, Biogen Inc., Arrowhead Pharmaceuticals, Ionis, Alexion Pharmaceuticals, Inc., Sanofi, 
Takeda, Eli Lilly, Alnylam Pharmaceuticals, Inc., Moderna Therapeutics, Inc., Akashi, Catabasis, Capricor Therapeutics, Oxford University, Vertex 
Pharmaceuticals, and Editas Medicine. 

If any of our competitors are successful in obtaining regulatory approval for any of their product candidates, it may limit our ability to enter into 

the market, gain market share or maintain market share in the Duchenne space or other diseases targeted by our platform technologies, products and 
product candidate pipeline.

It is possible that our competitors will succeed in developing technologies that, in addition to limiting the market size for our products or product 

candidates, impact the regulatory approval and post-marketing process for our products and product candidates, are more effective than our products or 
product candidates or would render our technologies obsolete or noncompetitive. Our competitors may, among other things, relative to our products or 
product candidates:

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develop safer or more effective products;

implement more effective approaches to sales and marketing;

develop less costly products;

have lower cost of goods;

receive more favorable reimbursement coverage;

obtain preferred formulary status;

obtain regulatory approval more quickly;

have access to more manufacturing capacity;

develop products that are more convenient and easier to administer;

form more advantageous strategic alliances; or

establish superior intellectual property positions.

Our revenue could face competitive pressures for any of the above reasons.  Moreover, if competing products are marketed in a territory in which 

we also have the authority to market our products, our sales may diminish, or our business could be otherwise materially adversely affected.

We have entered into multiple collaborations and strategic transactions, including our collaboration with Roche, and may seek or engage in 

future strategic collaborations, alliances, acquisitions, licensing agreements or other relationships that complement or expand our business. We may 
not be able to complete such transactions, and such transactions, if executed, may increase our capital requirements, dilute our stockholders, cause us 
to incur debt or assume contingent liabilities and subject us to other risks.

In order to achieve our long-term business objectives, we actively evaluate strategic opportunities on an ongoing basis, including licensing or 
acquiring products, technologies or businesses. We may face competition from other companies in pursuing such opportunities. This competition is most 
intense for approved drugs and late-stage drug candidates, which have the lowest risk in terms of probability of success but would have a higher risk and 
more immediate effect on our financial performance. Our ability to complete transactions may also be limited by applicable antitrust and trade regulation 
laws and regulations in the relevant U.S. and foreign jurisdictions. 

We have entered into multiple collaborations, including with Roche, Nationwide, Duke University, Genethon, StrideBio, University of Florida, 

Genevant Sciences, Dyno Therapeutics, Selecta Biosciences, GenEdit and Hansa Biopharma. We may not realize the anticipated benefits of such 
collaborations, and the anticipated benefits of any future collaborations or strategic relationships, each of which involves numerous risks, including:

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collaborators have significant discretion in determining the efforts and resources that they will apply to a collaboration;

collaborators may not pursue development and commercialization of our products or product candidates based on clinical trial results, 
changes in their strategic focus due to the acquisition of competitive products, availability of funding, or other internal or external factors, 
such as a business combination that diverts resources or creates competing priorities;

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collaborators may delay research activities including clinical trials, provide insufficient funding for research activities, stop research 
activities, abandon a product candidate, repeat or conduct new research activities including clinical trials, or require a new formulation of 
a product candidate for investigation including clinical testing;

collaborators could independently develop, or develop with third parties, products that compete directly or indirectly with our products or 
product candidates, or otherwise undermine or devalue the efforts of our collaboration;

collaborators may not properly maintain or defend our intellectual property rights or may use our intellectual property or proprietary 
information in a way that gives rise to actual or threatened litigation that could jeopardize or invalidate our intellectual property or 
proprietary information or expose us to potential liability;

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

collaborations may be terminated and, if terminated, may eliminate our rights to commercialize certain products or product candidates or 
may result in a need for additional capital;

failure to successfully develop the acquired or licensed products or technology or to achieve strategic objectives, including successfully 
developing and commercializing the products, product candidates or technologies that we acquire or license;

entry into markets in which we have no or limited direct prior experience or where competitors in such markets have stronger market 
positions;

disruption of our ongoing business, distraction of our management and employees from other opportunities and challenges and retention 
of key employees;

potential failure of the due diligence processes to identify significant problems, liabilities or other shortcomings or challenges of a 
strategic partner, or the relevant product or technology, including but not limited to, problems, liabilities or other shortcomings or 
challenges with respect to intellectual property, product quality, safety, accounting practices, employee, customer or third-party relations 
and other known and unknown liabilities; 

liability for activities of a strategic partner before the effective date of the relevant agreement, including intellectual property infringement 
claims, violations of laws, commercial disputes, tax liabilities, and other known and unknown liabilities;

exposure to litigation or other claims in connection with, or inheritance of claims or litigation risk as a result of a strategic transaction, 
including but not limited to, claims from terminated employees, customers, former equity holders or other third-parties;

difficulty in integrating the products, product candidates, technologies, business operations and personnel of an acquired asset or 
company; and

difficulties in the integration of the acquired company’s departments, systems, including accounting, human resource and other 
administrative systems, technologies, books and records, and procedures, as well as in maintaining uniform standards, controls, including 
internal control over financial reporting required by the Sarbanes-Oxley Act of 2002 and related procedures and policies.

For example, we will have limited influence and control over the development and commercialization activities of Roche in the territories in 

which it leads development and commercialization of SRP-9001, and if the exclusive option is exercised, in the territories in which it leads 
commercialization of certain other products or product candidates. Roche’s development and commercialization activities in the territories where it is the 
lead party may adversely impact our own efforts in the U.S. Failure by Roche to meet its obligations under the collaboration agreement, to apply sufficient 
efforts at developing and commercializing collaboration products, or to comply with applicable legal or regulatory requirements, may materially adversely 
affect our business and our results of operations. In addition, to the extent we rely on Roche to commercialize any products upon obtaining regulatory 
approval, we may receive less revenues than if we commercialized these products ourselves, which could materially harm our prospects. 

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Even if we achieve the long-term benefits associated with strategic transactions, our expenses and short-term costs may increase materially and 

adversely affect our liquidity and short-term net income (loss). Future strategic transactions could result in potentially dilutive issuances of our equity 
securities, the incurrence of debt, the creation of contingent liabilities, impairment or expenses related to goodwill, and impairment or amortization 
expenses related to other intangible assets, which could harm our financial condition. 

Risks Related to the Development of our Product Candidates

We may find it difficult to enroll patients in our clinical trials, which could delay or prevent clinical trials of our product candidates.

Identifying and qualifying patients to participate in clinical trials of our product candidates is critical to our success. The timing of our clinical 

trials depends on the speed at which we can recruit eligible patients to participate in testing our product candidates. We have experienced delays in some of 
our clinical trials, and we may experience similar delays in the future. These delays could result in increased costs, delays in advancing our product 
development, delays in testing the effectiveness of our technology or termination of the clinical trials altogether. 

We may not be able to identify, recruit and enroll a sufficient number of patients, or those with required or desired characteristics to achieve 

diversity in a study, to complete our clinical trials within the expected timeframe. Patient enrollment can be impacted by factors including, but not limited 
to:

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design and complexity and/or commitment of participation required in the study protocol;

size of the patient population;

diagnostic capabilities within patient population;

eligibility criteria for the study in question;

clinical supply availability;

delays in participating site identification, qualification and subsequent activation to enroll;

perceived risks and benefits of the product candidate under study, including as a result of adverse effects observed in similar or competing 
therapies;

proximity and availability of clinical trial sites for prospective patients;

availability of competing therapies and clinical trials;

competition of site efforts to facilitate timely enrollment in clinical trials;

participating site motivation;

patient referral practices of physicians; 

activities of patient advocacy groups;

ability to monitor patients adequately during and after treatment; and

severity of the disease under investigation.

In particular, each of the conditions for which we plan to evaluate our product candidates are rare genetic diseases with limited patient pools 

from which to draw for clinical trials. Further, because newborn screening for these diseases is not widely adopted, and it can be difficult to diagnose these 
diseases in the absence of a genetic screen, we may have difficulty finding patients who are eligible to participate in our studies. The eligibility criteria of 
our clinical trials will further limit the pool of available study participants. Additionally, the process of finding and diagnosing patients may prove costly. 
The treating physicians in our clinical trials may also use their medical discretion in advising patients enrolled in our clinical trials to withdraw from our 
studies to try alternative therapies. In addition, our ability to recruit and enroll patients in our clinical trials may be negatively impacted by the evolving 
COVID-19 pandemic, including patients’ ability and willingness to travel to clinical trial sites as a result of quarantines and other restrictions.

We may not be able to initiate or continue clinical trials if we cannot enroll the required eligible patients per protocol to participate in the clinical 

trials required by the FDA or the EMA or other regulatory agencies. Our ability to successfully initiate, 

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enroll and complete a clinical trial in any foreign country is subject to numerous risks unique to conducting business in foreign countries, including:

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difficulty in establishing or managing relationships with contract research organizations (“CROs”) and physicians;

different standards for the conduct of clinical trials;

our inability to locate qualified local consultants, physicians and partners; 

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

ability to procure and deliver necessary clinical trial materials needed to perform the study; and

inability to implement adequate training at participating sites remotely when in person training cannot be completed.

If we have difficulty enrolling a sufficient number of patients to conduct our clinical trials as planned, we may need to delay, limit or terminate 

ongoing or planned clinical trials, any of which would have an adverse effect on our business.

Failures or delays in the commencement or completion of ongoing and planned clinical trials of our product candidates could negatively 

impact commercialization efforts; result in increased costs; and delay, prevent or limit our ability to gain regulatory approval of product candidates and 
to generate revenues and continue our business.

Successful completion of clinical trials at each applicable stage of development is a prerequisite to submitting a marketing application to the 

regulatory agencies and, consequently, the ultimate approval and commercial marketing of any of our product candidates for the indications in which we 
develop them. We do not know whether any of our clinical trials will begin or be completed, and results announced, as planned or expected, if at all, as the 
commencement and completion of clinical trials and announcement of results is often delayed or prevented for a number of reasons, including, among 
others:

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denial by the regulatory agencies of permission to proceed with our planned clinical trials or any other clinical trials we may initiate, or 
placement of a clinical trial on hold;

delays in filing or receiving approvals of additional INDs that may be required;

negative and/or unanticipated results from our ongoing non-clinical trials or clinical trials;

challenges in identifying, recruiting, enrolling and retaining patients to participate in clinical trials;

challenges with subject compliance within clinical trials;

timely and effectively contract with (under reasonable terms), manage and work with investigators, institutions, hospitals and the CROs/ 
vendors involved in the clinical trial;

negotiate contracts and other related documents with clinical trial parties and institutional review boards, such as informed consents, CRO 
agreements and site agreements, which can be subject to extensive negotiations that could cause significant delays in the clinical trial 
process, with terms possibly varying significantly among different trial sites and CROs and possibly subjecting the Company to various 
risks;

inadequate quantity or quality of supplies of a product candidate or other materials necessary to conduct clinical trials, for example as a 
result of delays in defining and implementing the manufacturing process for materials used in pivotal trials or for the manufacture of 
larger quantities or other delays or issues arising in the manufacturing of sufficient supply of finished drug product;

difficulties obtaining institutional review board (“IRB”) approval, and equivalent (Ethics Committees or ECs) approval for sites outside 
the U.S., to conduct a clinical trial at a prospective site or sites;

ensure adherence to trial designs and protocols agreed upon and approved by regulatory authorities and applicable legal and regulatory 
guidelines;

delays or problems in analyzing data, or the need for additional analysis or data or the need to enroll additional patients;

the occurrence of serious adverse events or unexpected drug-related side effects experienced by patients in a clinical trial or unexpected 
results in ongoing non-clinical trials;

delays in validating endpoints utilized in a clinical trial;

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delays in validating outcome assessments needed in a clinical trial;

our inability to have formal meetings with the regulatory agencies or to interact with them on a regular basis;

our inability to satisfy the requirements of the regulatory agencies to commence clinical trials, such as developing potency assays and lot 
release specifications that correlate with the activity or response of the product candidate or other CMC requirements;

the regulatory agencies disagreeing with our clinical trial design and our interpretation of data from clinical trials, or changing the 
requirements for approval even after the regulatory authority has reviewed and commented on the design for our clinical trials;

reports from non-clinical or clinical testing of competing therapies that raise safety or efficacy concerns; and

the recruitment and retention of employees, consultants or contractors with the required level of expertise.

Any inability to complete successfully pre-clinical and clinical development could result in additional costs to us or impair our ability to generate 
revenues from product sales, regulatory and commercialization milestones and royalties. In addition, manufacturing or formulation changes to our product 
candidates often require additional studies to demonstrate comparability of the modified product candidates to earlier versions. Clinical study delays also 
shorten any periods during which we may have the exclusive right to commercialize our product candidates or allow our competitors to bring products to 
market before we do, which impairs our ability to successfully commercialize our product candidates and harms our business and results of operations.

 Clinical development is lengthy and uncertain. Clinical trials of our novel gene therapy candidates may be delayed, including as a result of 

the COVID-19 pandemic, and certain programs may never advance in the clinic or may be more costly to conduct than we anticipate, any of which 
could have a material adverse impact on our business.

Clinical testing is expensive and complex and can take many years to complete, and its outcome is inherently uncertain. We may not be able to 

initiate, may experience delays in, or may have to discontinue clinical trials for our product candidates as a result of numerous unforeseen events, 
including:

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the FDA, other regulators, IRBs, or ethics committees may not authorize us or our investigators to commence a clinical trial or conduct a 
clinical trial at a prospective trial site for any number of reasons, including concerns regarding safety and aspects of the clinical trial design;

we may experience delays in reaching, or fail to reach, agreement on favorable terms with prospective trial sites and prospective CROs, the 
terms of which can be subject to extensive negotiation and may vary significantly among different CROs and trial sites;

the outcome of our pre-clinical studies and our early clinical trials may not be predictive of the success of later clinical trials, and interim 
results of a clinical trial do not necessarily predict final results;

we may be unable to establish clinical endpoints that applicable regulatory authorities would consider clinically meaningful;

clinical trials of any product candidates may fail to show safety or efficacy, or produce negative or inconclusive results, and we may decide, 
or regulators may require us, to conduct additional nonclinical studies or clinical trials, or we may decide to abandon product development 
programs;

differences in trial design between early-stage clinical trials and later-stage clinical trials make it difficult to extrapolate the results of earlier 
clinical trials to later clinical trials;

pre-clinical and clinical data are often susceptible to varying interpretations and analyses, and many product candidates believed to have 
performed satisfactorily in pre-clinical studies and clinical trials have nonetheless failed to obtain marketing approval; and

regulators may elect to impose a clinical hold, or we or our investigators, IRBs, or ethics committees may elect to suspend or terminate 
clinical research or trials for various reasons, including noncompliance with regulatory requirements or a finding that the participants are 
being exposed to unacceptable benefit risk ratio. For example, in the past we have received clinical holds from the FDA. Although these 
holds have generally not materially affected our development timelines, there is no assurance that any future hold would not have a material 
adverse effect. A clinical hold, or any of the above factors, may be out of our control and could materially impair our development timelines, 
expenses and results of operations.

In addition, the impact of COVID-19 has caused disruptions and may cause delays in some of our clinical trials.  The recent responses to 

COVID-19 by healthcare providers and regulatory agencies could delay the commencement of clinical trials, site 

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initiation, protocol compliance, the completion of clinical trials, including the completion of post-marketing requirements and commitments, slow down 
enrollment, and make the ongoing collection of data for patients enrolled in studies more difficult or intermittent.  

Results from pre-clinical and early‑stage clinical trials may not be indicative of safety or efficacy in late‑stage clinical trials, and pre-clinical 

and clinical trials may fail to demonstrate acceptable levels of safety, efficacy, and quality of our product candidates, which could prevent or 
significantly delay their regulatory approval.

To obtain the requisite regulatory approvals to market and sell any of our product candidates, we must demonstrate, through extensive pre-
clinical and clinical trials, that the product candidate is safe and effective in humans. Ongoing and future pre-clinical and clinical trials of our product 
candidates may not show sufficient safety, efficacy or adequate quality to obtain or maintain regulatory approvals. For example, although we believe the 
data for SRP-9001, SRP-9003 and SRP-5051 collected to date are positive, the additional data we collect may not be consistent with the pre-clinical and/or 
early clinical data or show a safe benefit that warrants further development or pursuit of a regulatory approval for these product candidates. 

Furthermore, success in pre-clinical and early clinical trials does not ensure that the subsequent trials will be successful, nor does it predict final 

results of a confirmatory trial. Some of our clinical trials were conducted with small patient populations and were not blinded or placebo-controlled, 
making it difficult to predict whether the favorable results that we observed in such trials will be repeated in larger and more advanced clinical trials. For 
example, our most recent announcements for SRP-9001, SRP-9003 and SRP-5051 include: in January 2022, we announced topline results for Part 2 of 
Study 102 for SRP-9001; in May 2021, we announced results from the 30 mg/kg cohort of Part A of Study 5051-201 for SRP-5051; and in May 2021, we 
announced twelve-month functional data from three clinical trial participants in the high-dose cohort, and 24-month functional data from three clinical trial 
participants in the low-dose cohort for SRP-9003. These data are based on small patient samples, and, given the heterogeneity of Duchenne and LGMD 
patients and potential lot-to-lot variability, the data may not be predictive of future results. In addition, we cannot assure that the results of additional data or 
data from any future trial will yield results that are consistent with the data presented, that we will be able to demonstrate the safety and efficacy of these 
product candidates, that later trial results will support further development, or even if such later results are favorable, that we will be able to successfully 
complete the development of, obtain accelerated, conditional or standard regulatory approval for, or successfully commercialize any of such product 
candidates. Similarly, we cannot provide assurances that data from our ongoing and planned studies with respect to our commercially approved products 
and product candidates will be positive and consistent or that the interpretation by regulators, such as the FDA or EMA, of the data we collect for our 
products or product candidates will be consistent with our interpretations.

Our product candidates may cause undesirable side effects or have other properties that could delay or prevent regulatory approval of 

product candidates, limit the commercial potential or result in significant negative consequences following any potential marketing approval.

Our product candidates may cause undesirable side effects. In addition to side effects caused by our product candidates, the administration 

process or related procedures also can cause adverse side effects. If any such adverse events occur in our trials, we may decide, or the FDA, the EMA or 
other regulatory authorities could order us, to halt, delay or amend pre-clinical development or clinical development of our product candidates or we may 
be unable to receive regulatory approval of our product candidates for any or all targeted indications. Even if we are able to demonstrate that all future 
serious adverse events are not product-related, such occurrences could affect patient recruitment or the ability of enrolled patients to complete the trial. 
Moreover, if we elect, or are required, to delay, suspend or terminate any clinical trial of any of our product candidates, the commercial prospects of such 
product candidates may be harmed and our ability to generate product revenues from any of these product candidates may be delayed or eliminated. Any of 
these occurrences may harm our ability to develop other product candidates and may harm our business, financial condition and prospects significantly.

Our gene therapy product candidates may be perceived as unsafe or may result in unforeseen adverse events. Failure of other gene therapy 
programs, negative public opinion and increased regulatory scrutiny of gene therapy may damage public perception of the safety of our gene therapy 
product candidates and harm our ability to conduct our business or obtain regulatory approvals for our gene therapy product candidates.

Gene therapy remains a newly applied technology, with only a few gene therapy products approved to date in the U.S., the EU or elsewhere. 
Public perception may be influenced by claims that gene therapy is unsafe, and gene therapy may not gain the acceptance of the public or the medical 
community. In particular, our success will depend upon physicians who specialize in the treatment of genetic diseases targeted by our product candidates, 
prescribing treatments that involve the use of our product candidates in lieu of, or in addition to, existing treatments with which they are familiar and for 
which greater clinical data may be available. 

In addition, ethical, social and legal concerns about gene therapy, genetic testing and genetic research could result in additional regulations or 
prohibiting the processes we may use. Federal and state agencies, congressional committees and foreign governments have expressed their intentions to 
further regulate biotechnology. More restrictive regulations or claims that our product 

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candidates are unsafe or pose a hazard could prevent us from commercializing any products. New government requirements may be established that could 
delay or prevent regulatory approval of our product candidates under development. It is impossible to predict whether legislative changes will be enacted, 
regulations, policies or guidance changed, or interpretations by agencies or courts changed, or what the impact of such changes, if any, may be.

More restrictive government regulations or negative public opinion would harm our business, financial condition, results of operations and 

prospects and may delay or impair the development and commercialization of our gene therapy product candidates or demand for any products we may 
develop. For example, earlier gene therapy trials led to several well-publicized adverse events, including death. Lack of efficacy and/or serious adverse 
events related to clinical trials we, our strategic partners or other companies conduct, even if such adverse events are not ultimately attributable to the 
relevant product candidates or products, and/or failed commercialization of gene therapy products may result in increased government regulation, 
unfavorable public perception, potential regulatory delays in the testing or approval of our product candidates, stricter labeling requirements for those 
product candidates that are approved and a decrease in demand for any such product candidates.

If there are significant delays in obtaining or we are unable to obtain or maintain required regulatory approvals, we will not be able to 

commercialize our product candidates in a timely manner or at all, which could impair our ability to generate sufficient revenue and have a successful 
business.

The research, testing, manufacturing, labeling, approval, commercialization, marketing, selling and distribution of drug products are subject to 

extensive regulation by applicable local, regional and national regulatory authorities and regulations may differ from jurisdiction to jurisdiction. In the U.S., 
approvals and oversight from federal (e.g., FDA), state and other regulatory authorities are required for these activities. Sale and marketing of our product 
candidates in the U.S. or other countries is not permitted until we obtain the required approvals from the applicable regulatory authorities. Of the large 
number of drugs in development in the biopharmaceutical industry, only a small percentage result in the submission of a marketing application to the FDA 
or an MAA to the EMA and even fewer are approved for commercialization.

Our ability to obtain the government or regulatory approvals required to commercialize any of our product candidates in any jurisdiction, 

including in the U.S. or the EU, cannot be assured, may be significantly delayed or may never be achieved for various reasons including the following:

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Our non-clinical, clinical, chemistry, manufacturing and controls and other data and analyses from past, current and future studies for any 
of our product candidates may not be sufficient to meet regulatory requirements for marketing application approvals. The regulatory 
authorities could disagree with our interpretations and conclusions regarding data we provide in connection with NDA, BLA or MAA 
submissions for one or more of our product candidates, and may delay, reject or refuse to accept for review, or approve any submission we 
make or identify additional requirements for product approval to be submitted upon completion, if ever. In addition, in the U.S., an FDA 
advisory committee could determine that our data are insufficient to provide a positive recommendation for approval of any NDA or BLA 
we submit to the FDA. Even if we meet FDA requirements and an advisory committee votes to recommend approval of an NDA or BLA 
submission, the FDA could still disagree with the advisory committee’s recommendation and deny approval of a product candidate based 
on their review.

The regulatory approval process for product candidates targeting orphan diseases, such as Duchenne, that use new technologies and 
processes, such as antisense oligonucleotide therapies, gene therapy and other alternative approaches or endpoints for the determination of 
efficacy is uncertain due to, among other factors, evolving interpretations of a new therapeutic class, the broad discretion of regulatory 
authorities, lack of precedent, small safety databases, varying levels of applicable expertise of regulators or their advisory committees, 
scientific developments, changes in the competitor landscape, shifting political priorities and changes in applicable laws, rules or 
regulations and interpretations of the same. As a result of uncertainty in the approval process for products intended to treat serious rare 
diseases, we may not be able to anticipate, prepare for or satisfy requests or requirements from regulatory authorities, including 
completing and submitting planned NDAs, BLAs and MAAs for our product candidates, in a timely manner, or at all. Examples of such 
requests or requirements could include, but are not limited to, conducting additional or redesigned trials and procedures (e.g., additional 
safety data, patient muscle biopsies, dystrophin analyses and the use of assays), repeating or completing additional analysis of our data, or 
providing additional supportive data. In addition, in the U.S., an FDA advisory committee or regulators may disagree with our data 
analysis, interpretations and conclusions at any point in the approval process, which could negatively impact the approval of our NDA or 
BLA or result in a decision by the Company not to proceed with an NDA or BLA submission for a product candidate based on feedback 
from regulators.

We may not have the resources required to meet regulatory requirements and successfully navigate what is generally a lengthy, expensive 
and extensive approval process for commercialization of drug product candidates. 

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Any failure on our part to respond to these requirements in a timely and satisfactory manner could significantly delay or negatively impact 

confirmatory study timelines and/or the development plans we have for PMO, PPMO, gene therapy-based product candidates or other product candidates. 
Responding to requests from regulators and meeting requirements for clinical trials, submissions and approvals may require substantial personnel, financial 
or other resources, which, as a small biopharmaceutical company, we may not be able to obtain in a timely manner or at all. In addition, our ability to 
respond to requests from regulatory authorities that involve our agents, third party vendors and associates may be complicated by our own limitations and 
those of the parties we work with. It may be difficult or impossible for us to conform to regulatory guidance or successfully execute our product 
development plans in response to regulatory guidance, including guidance related to clinical trial design with respect to any NDA, BLA or MAA 
submissions.

Even if our product candidates demonstrate safety and efficacy in clinical studies, the regulatory agencies may not complete their review 

processes in a timely manner, or we may not be able to obtain regulatory approval. Additional delays may result if an FDA Advisory Committee or other 
regulatory advisory group or authority recommends non-approval or restrictions on approval. In addition, we may experience delays or rejections based 
upon additional government regulation from future legislation or administrative action, or changes in regulatory agency policy during the period of product 
development, clinical studies and the review process. Regulatory agencies also may approve a treatment candidate for fewer or more limited indications 
than requested or may grant approval subject to the performance of post-marketing studies. Furthermore, regulatory agencies may not approve the labeling 
claims that are necessary or desirable for the successful commercialization of our treatment candidates. Finally, some of our product candidates may require 
diagnostic tests to ensure we appropriately select patients suitable for treatment. If we are unable to successfully develop diagnostic tests for these product 
candidates, experience significant delays in doing so, or are unable to obtain required regulatory clearances or approvals for any diagnostic tests, the 
commercialization of our product candidates may be delayed or prevented. Even if we receive the required regulatory clearance or approvals for certain 
diagnostic tests, the commercial success of any of our product candidates that require such tests will be dependent upon the continued availability of such 
tests.

Even after approval and commercialization of a product candidate, we remain subject to ongoing regulatory compliance and oversight to 

maintain our approval. Conducting our post marketing commitments for our three commercialized products studies could take years to complete, could 
yield negative or uninterpretable results or could result in an FDA determination that the studies do not provide the safety and efficacy requirements to 
maintain regulatory approval. If we or any of our strategic partners are unable to develop, or obtain regulatory approval for, or, if approved, maintain 
regulatory compliance and successfully commercialize, our product candidates, our business will be materially harmed.

We are investing significant resources in the development of novel gene therapy product candidates. Only a few gene therapy products have 

been approved in the U.S. and EU. If we are unable to show the safety and efficacy of these product candidates, experience delays in doing so or are 
unable to successfully commercialize at least one of these drugs, our business would be materially harmed. 

We are investing significant resources in the development of our gene therapy product candidates. We believe that a significant portion of the 
long-term value attributed to our company by investors is based on the commercial potential of these product candidates. There can be no assurance that 
any development problems we experience in the future related to our gene therapy programs will not cause significant delays or unanticipated costs, or that 
such development problems can be solved. Development problems and delays in one program may delay the development of other programs. Early results 
from ongoing clinical trials may differ materially from final results from such clinical trials. The results from pre-clinical and early clinical studies do not 
always accurately predict results in later, large-scale clinical trials. We may also experience delays in developing a sustainable, reproducible and 
commercial-scale manufacturing process or transferring that process to commercial partners, which may prevent us from completing our clinical trials or 
commercializing our products on a timely or profitable basis, if at all. 

In addition, the clinical trial requirements of the FDA, the EMA, and other regulatory agencies and the criteria these regulators use to determine 

the safety and efficacy of a product candidate vary substantially according to the type, complexity, novelty and intended use and market of the potential 
products. The regulatory approval process for novel product candidates such as ours can be more expensive and take longer than for other, better known or 
more extensively studied pharmaceutical or other product candidates. Currently, only a few gene therapy products have been approved in the Western 
world. Given the few precedents of approved gene therapy products, it is difficult to determine how long it will take or how much it will cost to obtain 
regulatory approvals for our gene therapy product candidates in the U.S., the EU or other jurisdictions. Approvals by the EMA and the EC may not be 
indicative of what the FDA may require for approval. 

Regulatory requirements governing gene therapy products have evolved and may continue to change in the future. Within the FDA, the Center 
for Biologics Evaluation and Research (“CBER”) regulates gene therapy products.  Within the CBER, the review of gene therapy and related products is 
consolidated in the Office of Cellular, Tissue and Gene Therapies, and the FDA has established the Cellular, Tissue and Gene Therapies Advisory 
Committee to advise CBER on its reviews. The CBER works closely with the 

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National Institutes of Health (the “NIH”). The FDA and the NIH have published guidance documents with respect to the development and submission of 
gene therapy protocols. For example, on January 28, 2020, the FDA issued final guidance documents that updated draft guidance documents that were 
originally released in July 2018 to reflect recent advances in the field, and to set forth the framework for the development, review and approval of gene 
therapies. These final guidance documents pertain to the development of gene therapies for the treatment of specific disease categories, including rare 
diseases, and to manufacturing and long-term follow up issues relevant to gene therapy, among other topics. The FDA also issued a new guidance 
document in September 2021 describing the FDA’s approach for determining whether two gene therapy products were the same or different for the purpose 
of assessing orphan drug exclusivity. In addition, the FDA can put an IND on hold if the information in an IND is not sufficient to assess the risks in 
pediatric patients.  

These regulatory review agencies, committees and advisory groups and the new requirements and guidelines they promulgate may lengthen the 

regulatory review process, require us to perform additional or larger studies, increase our development costs, lead to changes in regulatory positions and 
interpretations, delay or prevent approval and commercialization of these treatment candidates or lead to significant post-approval studies, limitations or 
restrictions. As we advance our product candidates, we will be required to consult with these regulatory and advisory groups and comply with applicable 
requirements and guidelines, failure of which may lead to delayed or discontinued development of our product candidates. 

If the anticipated or actual timing of marketing approvals for our gene therapy product candidates, or the market acceptance of these product 

candidates, if approved, including treatment reimbursement levels agreed to by third-party payors, do not meet the expectations of investors or public 
market analysts, the market price of our common stock would likely decline.

Because we are developing product candidates for the treatment of certain diseases in which there is little clinical experience and we are 

using new endpoints or methodologies, there is increased risk that the FDA, the EMA or other regulatory authorities may not consider the endpoints of 
our clinical trials to provide clinically meaningful results and that these results may be difficult to analyze.

During the FDA review process, we will need to identify success criteria and endpoints such that the FDA will be able to determine the clinical 

efficacy and safety profile of our product candidates. As we are developing novel treatments for diseases in which there is little clinical experience with 
new endpoints and methodologies, such as gene therapy, there is heightened risk that the FDA, the EMA or other regulatory bodies may not consider the 
clinical trial endpoints to provide clinically meaningful results (reflecting a tangible benefit to patients). In addition, the resulting clinical data and results 
may be difficult to analyze. Even if the FDA does find our success criteria to be sufficiently validated and clinically meaningful, we may not achieve the 
pre-specified endpoints to a degree of statistical significance. Achieving appropriate statistical power may be challenging for some of the ultra-rare 
genetically defined diseases we are targeting in our programs, especially if the acceptance of descriptive data is not yet established. In addition, different 
methodologies, assumptions and applications we utilize to assess particular safety or efficacy parameters may yield different statistical results. Even if we 
believe the data collected from clinical trials of our product candidates are promising, these data may not be sufficient to support approval by the FDA or 
foreign regulatory authorities. Pre-clinical and clinical data can be interpreted in different ways. Accordingly, the FDA or foreign regulatory authorities 
could interpret these data in different ways from us or our partners, which could delay, limit or prevent full or accelerated regulatory approval.

If our study data do not consistently or sufficiently demonstrate the safety or efficacy of any of our product candidates, the regulatory approvals 

for such product candidates could be significantly delayed as we work to meet approval requirements, or, if we are not able to meet these requirements, 
such approvals could be withheld or withdrawn. 

Fast track product, breakthrough therapy, priority review, or Regenerative Medicine Advanced Therapy (“RMAT”) designation by the FDA, 

or access to the Priority Medicine scheme (“PRIME”) by the EMA, for our product candidates, if granted, may not lead to faster development or 
regulatory review or approval process, and it does not increase the likelihood that our product candidates will receive marketing approval. 

We may seek fast track, breakthrough therapy designation, RMAT designation, PRIME scheme access or priority review designation for our 

product candidates if supported by the results of clinical trials. A fast track product designation is designed to facilitate the clinical development and 
expedite the review of drugs intended to treat a serious or life-threatening condition which demonstrate the potential to address an unmet medical need. A 
breakthrough therapy is defined as a drug that is intended, alone or in combination with one or more other drugs, to treat a serious or life-threatening 
disease or condition, where preliminary clinical evidence indicates that the drug may demonstrate substantial improvement over existing therapies on one 
or more clinically significant endpoints, such as substantial treatment effects observed early in clinical development. A RMAT designation is designed to 
accelerate approval for regenerative advanced therapies such as our gene therapy product candidates. Priority review designation is intended to speed the 
FDA marketing application review timeframe for drugs that treat a serious condition and, if approved, would provide a 

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significant improvement in safety or effectiveness. PRIME is a scheme provided by the EMA to enhance support for the development of medicines that 
target an unmet medical need. 

For drugs and biologics that have been designated as fast track products or breakthrough therapies, or granted access to the PRIME scheme, 

interaction and communication between the regulatory agency and the sponsor of the trial can help to identify the most efficient path for clinical 
development. Sponsors of drugs with fast track products or breakthrough therapies may also be able to submit marketing applications on a rolling basis, 
meaning that the FDA may review portions of a marketing application before the sponsor submits the complete application to the FDA, if the sponsor pays 
the user fee upon submission of the first portion of the marketing application. For products that receive a priority review designation, the FDA's marketing 
application review goal is shortened to six months, as opposed to ten months under standard review. This review goal is based on the date the FDA accepts 
the marketing application for review, this application validation period typically adds approximately two months to the timeline for review and decision 
from the date of submission. RMAT designations will accelerate approval and will include all the benefits of fast track and breakthrough therapy 
designations, including early interactions with the FDA, but the exact mechanisms have not yet been announced by FDA.  

Designation as a fast track product, breakthrough therapy, RMAT, PRIME, or priority review product is within the discretion of the regulatory 

agency. Accordingly, even if we believe one of our product candidates meets the criteria for designation as a fast track product, breakthrough therapy, 
RMAT, PRIME, or priority review product, the agency may disagree and instead determine not to make such designation. In any event, the receipt of such a 
designation for a product candidate may not result in a faster development process, review or approval compared to drugs considered for approval under 
conventional regulatory procedures and does not assure ultimate marketing approval by the agency. In addition, regarding fast track products and 
breakthrough therapies, the FDA may later decide that the products no longer meet the conditions for qualification as either a fast track product, RMAT, or 
a breakthrough therapy or, for priority review products, decide that period for FDA review or approval will not be shortened.

We may not be able to advance all of our programs, and we may use our financial and human resources to pursue particular programs and 

fail to capitalize on programs that may be more profitable or for which there is a greater likelihood of success. 

Our pipeline includes more than 40 programs in various stages of development for a broad range of diseases and disorders. We plan to expand 

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

Risks Related to Third Parties 

If we are unable to maintain our agreements with third parties to distribute our products to patients, our results of operations and business 

could be adversely affected.

We rely on third parties to commercially distribute our products to patients in the U.S. We have contracted with a third-party logistics company 

to warehouse our products and with distributors and specialty pharmacies to sell and distribute our products to patients. A specialty pharmacy is a 
pharmacy that specializes in the dispensing of medications for complex or chronic conditions that require a high level of patient education and ongoing 
management.  

This distribution network requires significant coordination with our sales and marketing and finance organizations. In addition, failure to 

coordinate financial systems could negatively impact our ability to accurately report product revenue from our products. If we are unable to effectively 
manage the distribution process, the sales of our products, as well as any future products we may commercialize, could be delayed or severely 
compromised and our results of operations may be harmed. 

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In addition, the use of third parties involves certain risks, including, but not limited to, risks that these organizations will:

•

•

•

•

•

•

not provide us with accurate or timely information regarding their inventories, the number of patients who are using our products or 
serious adverse events and/or product complaints regarding our products;

not effectively sell or support our products;

reduce or discontinue their efforts to sell or support our products;

not devote the resources necessary to sell our products in the volumes and within the time frame we expect;

be unable to satisfy financial obligations to us or others; or

cease operations.

Any such events may result in decreased product sales, lower product revenue, loss of revenue, and/or reputational damage, which would harm 

our results of operations and business.

With respect to the pre-commercial distribution of our products to patients outside of the U.S., we have contracted with third party distributors 
and service providers to distribute our products in certain countries through our EAP. We will need to continue building out our network for commercial 
distribution in jurisdictions in which our products are approved, which will also require third party contracts. The use of distributors and service providers 
involves certain risks, including, but not limited to, risks that these organizations will not comply with applicable laws and regulations, or not provide us 
with accurate or timely information regarding serious adverse events and/or product complaints regarding our products. Any such events may result in 
regulatory actions that may include suspension or termination of the distribution and sale of our products in a certain country, loss of revenue, and/or 
reputational damage, which could harm our results of operations and business.

Furthermore, a significant outbreak of COVID-19 at one of our third-party logistics, distribution, or specialty pharmacy sites could lead to a 

delay in the commercial or pre-commercial shipments of our products to patients and hospitals.

We rely on third parties to conduct some aspects of our early stage research and pre-clinical and clinical development. The inadequate 

performance by or loss of any of these third parties could affect the development and commercialization of our product candidate development.

We have relied upon, and plan to continue to rely upon, third parties to conduct some aspects of our early stage research and pre-clinical and 

clinical development with respect to certain of our product candidates, including our follow-on exon-skipping product candidates, PPMO, gene therapy and 
gene editing product candidates. Our third-party collaborators may not commit sufficient resources or adequately develop our programs for these 
candidates. If our third-party collaborators fail to commit sufficient resources to any of our product candidates or to carry out their contractual duties or 
obligations, our programs related to any particular product candidate could be delayed, terminated, or unsuccessful. Furthermore, if we fail to make 
required payments to these third-party collaborators, including up-front, milestone, reimbursement or royalty payments, or to observe other obligations in 
our agreements with them, these third parties may not be required to perform their obligations under our respective agreements with them and may have the 
right to terminate such agreements. In addition, if our strategic partners experience regulatory delays for the development of their clinical product 
candidates, including clinical holds, our opportunities to commercialize products may be delayed.

We also have relied upon and plan to continue to rely upon third-party CROs to monitor and manage data completeness for our ongoing pre-
clinical and clinical programs. We rely on these parties for execution of our pre-clinical and clinical trials, and we control only certain aspects of their 
activities. Nevertheless, we are responsible for ensuring that each of our studies is conducted in accordance with the applicable protocol and legal, 
regulatory and scientific standards, and our reliance on collaborators and CROs does not relieve us of our regulatory responsibilities.

The individuals at our third-party collaborators and CROs who conduct work on our behalf, including their sub-contractors, are not always our 

employees, and although we participate in the planning of our early stage research and pre-clinical and clinical programs, we cannot control whether or not 
they devote sufficient time and resources or exercise appropriate oversight of these programs, except for remedies available to us under our agreements 
with such third parties. If our collaborators and CROs do not successfully carry out their contractual duties or obligations or if the quality or accuracy of the 
data they obtain is compromised due to the failure to adhere to our pre-clinical and clinical protocols, regulatory requirements or for other reasons, our 
clinical trials may be extended, delayed or terminated, and we may not be able to obtain regulatory approval for or successfully commercialize our product 
candidates. As a result, our results of operations and the commercial prospects for our product candidates would be harmed, our costs could increase and 
our ability to generate revenues could be delayed.

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Our reliance on third parties requires us to share our proprietary information, which increases the possibility that a competitor will discover 

them or that our proprietary information will be misappropriated or inadvertently disclosed.

Our reliance on third-party collaborators requires us to disclose our proprietary information to these parties, which could increase the risk that a 

competitor will discover this information or that this information will be misappropriated or disclosed without our intent to do so.  If any of these events 
were to occur, then our ability to obtain patent protection or other intellectual property rights could be irrevocably jeopardized, and costly, distracting 
litigation could ensue. Furthermore, if these third parties cease to continue operations and we are not able to quickly find a replacement provider or we lose 
information or items associated with our products or product candidates, our development programs may be delayed. Although we carefully manage our 
relationships with our third-party collaborators and CROs, there can be no assurance that we will not encounter challenges or delays in the future or that 
these delays or challenges will not have a material adverse impact on our business, financial condition and prospects.

Risks Related to Manufacturing

We currently rely on third parties to manufacture our products and to produce our product candidates; our dependence on these parties, 

including failure on our part to accurately anticipate product demand and timely secure manufacturing capacity to meet commercial, EAP, clinical and 
pre-clinical product demand may impair the availability of product for commercial supply or to successfully support various programs, including 
research and development and the potential commercialization of additional product candidates in our pipeline.

We currently do not have the internal capacity to manufacture our commercial products or product candidates in the quantities needed to meet 

commercial, clinical or EAPs demand for our products, or to conduct our research and development programs and conduct clinical trials. Therefore, we rely 
on, and expect to continue relying on for the foreseeable future, a limited number of third parties to manufacture and supply materials (including raw 
materials and subunits), API and drug product, as well as to perform additional steps in the manufacturing process, such as labeling and packaging of vials 
and storage of our products and product candidates. As of the date of this Annual Report, we have dual sourcing for the APIs and drug product for all three 
of our commercial products. The limited number of third parties with facilities and capabilities suited for the manufacturing process of our products and 
product candidates creates a risk that we may not be able to obtain materials and APIs in the quantity and purity that we require.  

In addition, the process for adding new manufacturing capacity is lengthy and often causes delays in development efforts. Any interruption of the 

development or operation of those facilities due to, among other reasons, events such as the ongoing COVID-19 pandemic, order delays for equipment or 
materials, equipment malfunctions, quality control and quality assurance issues, regulatory delays and possible negative effects of such delays on supply 
chains and expected timelines for product availability, production yield issues, shortages of qualified personnel, discontinuation of a facility or business or 
failure or damage to a facility by natural disasters, such as earthquakes or fires, could result in the cancellation of shipments, loss of product in the 
manufacturing process or a shortfall in supply of our products, product candidates or materials.

If these third parties cease providing quality manufacturing and related services to us, and we are not able to engage appropriate replacements in 
a timely manner, our ability to manufacture our products or product candidates in sufficient quality and quantity required for our planned commercial, pre-
clinical and clinical or EAPs, our various product research, development and commercialization efforts would be adversely affected. 

Furthermore, any problems in our manufacturing process or the facilities with which we contract make us a less attractive collaborator for 

potential partners, including larger pharmaceutical companies and academic research institutions, which could limit our access to additional attractive 
development programs. 

We, through our third-party manufacturers, seek to produce or produce supply of our products and product candidates. In light of the limited 

number of third parties with the expertise to produce our products and product candidates, the lead time needed to manufacture them, and the availability of 
underlying materials, we may not be able to, in a timely manner or at all, establish or maintain sufficient commercial and other manufacturing arrangements 
on the commercially reasonable terms necessary to provide adequate supply of our products and product candidates. Furthermore, we may not be able to 
obtain the significant financial capital that may be required in connection with such arrangements. Even after successfully engaging third parties to execute 
the manufacturing process for our products and product candidates, such parties may not comply with the terms and timelines they have agreed to for 
various reasons, some of which may be out of their or our control, which impacts our ability to execute our business plans on expected or required 
timelines in connection with the commercialization of our products and the continued development of our product candidates. When we enter into long-
term manufacturing agreements that contain exclusivity provisions and /or substantial termination penalties, we constrain our operational flexibility.

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The operations at one of our partner sites could also be disturbed by man-made or natural disasters or public health pandemics or epidemics or 

other business interrupts.  For example, a significant outbreak of COVID-19 at one of our partner sites could lead to delays in the manufacturing of our 
products and product candidates.  In addition, the need to prioritize rated orders issued by the Federal Emergency Management Agency pursuant to the U.S. 
Defense Production Act could impact the manufacturing, supply chain and distribution of our products and product candidates.

The third parties we use in the manufacturing process for our products and product candidates may fail to comply with cGMP regulations.

Our contract manufacturers are required to produce our materials, APIs and drug products under cGMP. We and our contract manufacturers are 

subject to periodic inspections by the FDA, EMA and corresponding state and foreign authorities to ensure strict compliance with cGMP and other 
applicable government regulations. In addition, before we can begin to commercially manufacture our product candidates in third-party or our own 
facilities, we must obtain regulatory approval from the FDA, which includes a review of the manufacturing process and facility. A manufacturing 
authorization also must be obtained from the appropriate EU regulatory authorities and may be required by other foreign regulatory authorities. The 
timeframe required to obtain such approval or authorization is uncertain. In order to obtain approval, we need to demonstrate that all of our processes, 
methods and equipment are compliant with cGMP, and perform extensive audits of vendors, contract laboratories and suppliers. In complying with cGMP, 
we are obligated to expend time, money and effort in production, record keeping and quality control to seek to assure that the product meets applicable 
specifications and other requirements. 

We do not have direct operational control over a third-party manufacturer’s compliance with regulations and requirements. In addition, changes 
in cGMP could negatively impact the ability of our contract manufacturers to complete the manufacturing process of our products and product candidates 
in a compliant manner on the schedule we require for commercial and clinical trial use, respectively. Failure to achieve and maintain compliance with 
cGMP and other applicable government regulations, including failure to detect or control anticipated or unanticipated manufacturing errors, results in 
product recalls, clinical holds, delayed or withheld approvals, patient injury or death. 

Failure by our contract manufacturers to adhere to applicable cGMP and other applicable government regulations, or our contract manufacturers 
experiencing manufacturing problems, may result in significant negative consequences, including product seizures or recalls, postponement or cancellation 
of clinical trials, loss or delay of product approval, fines and sanctions, loss of revenue, termination of the development of a product candidate, reputational 
damage, shipment delays, inventory shortages, inventory write-offs and other product-related charges and increased manufacturing costs. If we experience 
any of these consequences, the success of our commercialization of our products and/or our development efforts for our product candidates could be 
significantly delayed, fail or otherwise be negatively impacted.

We may not be able to successfully scale up manufacturing of our products or product candidates in sufficient quality and quantity or within 

targeted timelines, or be able to secure ownership of intellectual property rights developed in this process, which could negatively impact the 
commercial success of our products and/or the development of our product candidates.

We are working to increase manufacturing capacity and scale up production of some of the components of our drug products. Our focus remains 
on (i) achieving larger-scale manufacturing capacity for our products and product candidates throughout the manufacturing supply chain, (ii) continuing to 
increase material and API production capacity to provide the anticipated amounts of drug product needed for our planned studies for our product candidates 
and (iii) optimizing manufacturing for our follow-on exon skipping product candidates and other programs, including PPMO and gene therapy. We may not 
be able to successfully increase manufacturing capacity or scale up the production of materials, APIs and drug products, whether in collaboration with third 
party manufacturers or on our own, in a manner that is safe, compliant with cGMP conditions or other applicable legal or regulatory requirements, in a 
cost-effective manner, in a time frame required to meet our timeline for commercialization, clinical trials and other business plans, or at all. 

Challenges complying with cGMP requirements and other quality issues arise during efforts to increase manufacturing capacity and scale up 

production. We experience such issues in connection with manufacturing, packaging and storage of our products and product candidates, and during 
shipping and storage of the APIs or finished drug product. In addition, in order to release our products for commercial use and demonstrate stability of 
product candidates for use in clinical trials (and any subsequent drug products for commercial use), our manufacturing processes and analytical methods 
must be validated in accordance with regulatory guidelines. Failure to successfully validate, or maintain validation of, our manufacturing processes and 
analytical methods or demonstrate adequate purity, stability or comparability of our products or product candidates in a timely or cost-effective manner, or 
at all, may undermine our commercial efforts. Failure to successfully validate our manufacturing processes and analytical methods or to demonstrate 
adequate purity, stability or comparability, will negatively impact the commercial availability of our products and the continued development and/or 
regulatory approval of our product candidates, which could significantly harm our business.

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During our work with our third-party manufacturers to increase and optimize manufacturing capacity and scale up production, they may make 

proprietary improvements in the manufacturing and scale-up processes for our products or product candidates. We may not own or be able to secure 
ownership of such improvements or may have to share the intellectual property rights to those improvements. Additionally, we may need additional 
processes, technologies and validation studies, which could be costly and which we may not be able to develop or acquire from third parties. Failure to 
secure the intellectual property rights required for the manufacturing process needed for large-scale clinical trials or commercialization of our products or 
the continued development of our product candidates could cause significant delays in our business plans or otherwise negatively impact the 
commercialization of our products or the continued development of our product candidates.

Products intended for use in gene therapies are novel, complex and difficult to manufacture. We could experience production problems that 

result in delays in our development or commercialization of gene therapy programs, limit the supply of our products or otherwise harm our business.

We currently have development, manufacturing and testing agreements with third parties to manufacture supplies of our gene therapy product 

candidates. Several factors could cause production interruptions, including equipment malfunctions, facility contamination, raw material shortages or 
contamination, natural disasters, disruption in utility services, human error or disruptions in the operations of suppliers.

The physical and chemical properties of biologics such as ours generally cannot be fully characterized. As a result, assays of the finished product 

may not be sufficient to ensure that the product will perform in the intended manner. Accordingly, we employ multiple steps to control our manufacturing 
process to assure that the process works and the product candidate is made strictly and consistently in compliance with the process. Problems with the 
manufacturing process, even minor deviations from the normal process, could result in product defects or manufacturing failures that result in lot failures, 
product recalls, product liability claims or insufficient inventory. We may encounter problems achieving adequate quantities and quality of clinical and/or 
commercial-grade materials that meet FDA, EMA or other applicable foreign standards or specifications with consistent and acceptable production yields 
and costs.

In addition, the FDA, the EMA and other foreign regulatory authorities may require us to submit samples of any lot of any approved product 

together with the protocols showing the results of applicable tests at any time. Under some circumstances, the FDA, the EMA or other foreign regulatory 
authorities may require that we not distribute a lot until the competent authority authorizes its release. Slight deviations in the manufacturing process, 
including those affecting quality attributes and stability and deviations among different sites, may result in unacceptable changes in the product that could 
result in lot failures or product recalls. Lot failures or product recalls could cause us to delay clinical trials or product launches which could be costly to us 
and otherwise harm our business, financial condition, results of operations and prospects.

As our product candidates advance to later stage clinical trials, it is customary that various aspects of the development program, such as 

manufacturing, formulation and other processes, and methods of administration, may be altered to optimize the candidates and processes for scale-up 
necessary for later stage clinical trials and potential approval and commercialization. These changes may not produce the intended optimization, including 
production of drug substance and drug product of a quality and in a quantity sufficient for Phase 3 clinical stage development or for commercialization, 
which may cause delays in the initiation or completion of clinical trials and greater costs. We may also need to conduct additional studies to demonstrate 
comparability between newly manufactured drug substance and/or drug product for commercialization relative to previously manufactured drug substance 
and/or drug product for clinical trials. Demonstrating comparability may require us to incur additional costs or delay initiation or completion of clinical 
trials and, if unsuccessful, could require us to complete additional pre-clinical studies or clinical trials.

We also may encounter problems hiring and retaining the experienced scientific, quality control and manufacturing personnel needed to operate 
our manufacturing process which could result in delays in our production or difficulties in maintaining compliance with applicable regulatory requirements.

Furthermore, no manufacturer currently has the capacity and scalability to produce our vectors or gene therapy product candidates at commercial 

levels. Even if we timely develop a manufacturing process and successfully transfer it to the third-party vector and product manufacturers or successfully 
and timely develop our internal capacity, if we or such third-party manufacturers are unable to produce the necessary quantities of viral vectors and our 
product candidates, or in compliance with GMP or other pertinent regulatory requirements, and within our planned time frame and cost parameters, it may 
result in delays in our development plans or increased capital expenditures, and the development and sales of our products, if approved, may be materially 
harmed. 

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Risks Related to our Intellectual Property

Our success, competitive position and future revenue depend in part on our ability and the abilities of our licensors and other collaborators to 
obtain, maintain and defend the patent protection for our products, product candidates, and platform technologies, to preserve our trade secrets, and to 
prevent third parties from infringing on our proprietary rights.

We currently directly hold various issued patents and patent applications, or have exclusive license or option rights to issued patents and patent 

applications, in each case in the U.S. as well as other countries that protect our products, product candidates and platform technologies.  We anticipate 
filing additional patent applications both in the U.S. and in other countries. Our success will depend, in significant part, on our ability to obtain, maintain 
and defend our U.S. and foreign patents covering our products, product candidates and platform technologies as well as preserving our trade secrets for 
these assets. The patent process is subject to numerous risks and uncertainties, and we can provide no assurance that we will be successful in obtaining, 
maintaining, or defending our patents. Even when our patent claims are allowed, the claims may not issue, or in the event of issuance, may not be sufficient 
to protect our products, product candidates or platform technologies.  

The patent positions of pharmaceutical, biotechnology and other life sciences companies can be highly uncertain and involve complex legal and 

factual questions for which important legal principles remain unresolved.  This uncertainty is heightened for our PMO-based products and product 
candidates and gene therapy-based product candidates for which there has been little patent litigation involving such technologies. No consistent policy 
regarding the breadth of claims allowed in biotechnology patents has emerged to date in the U.S. and tests used for determining the patentability of patent 
claims in all technologies are in flux. The USPTO and patent offices in other jurisdictions have often required that patent applications concerning 
pharmaceutical and/or biotechnology-related inventions be limited or narrowed substantially to cover only the specific innovations exemplified in the 
patent application, thereby limiting the scope of protection against competitive challenges. Accordingly, even if we or our licensors are able to obtain 
patents, the patents might be substantially narrower than anticipated.  Thus, there is no assurance as to the degree and range of protections any of our 
patents, if issued, may afford us or whether patents will be issued.  Patents which may be issued to us may be subjected to further governmental review that 
may ultimately result in the reduction of their scope of protection, and pending patent applications may have their requested breadth of protection 
significantly limited before being issued, if issued at all. The pharmaceutical, biotechnology and other life sciences patent situation outside the U.S. can be 
even more uncertain.  

As a matter of public policy, there might be significant pressure on governmental bodies to limit the scope of patent protection or impose 

compulsory licenses for disease treatments that prove successful, particularly as a tactic to impose a price control.  Additionally, competitors may leverage 
such pressure to enhance their ability to exploit these laws to create, develop and market competing products.

We may be able to assert that certain activities engaged in by our competitors infringe on our current or future patent rights. To the extent that we 

enforce our patents, an alleged infringer may deny infringement and/or counter-claim that our patents are not valid, and if successful, could negatively 
impact our patent estate. We may not be able to successfully defend patents necessary to prevent competitors from developing or commercializing 
competing product candidates or products. To the extent we assert infringement of a patent that covers a competing product candidate or product as well as 
our own product candidate(s) or product(s), or such a patent is otherwise challenged without our initiation, the patent protection for our own product 
candidate(s) or product(s) could be materially adversely affected should an infringing competitor be successful challenging the validity of our patent.  Our 
patent rights might be challenged, invalidated, circumvented or otherwise not provide any competitive advantage. Defending our patent positions may 
require significant financial resources and could negatively impact other Company objectives. Even if we successfully enforce our patent rights against a 
competitor, we may not be able to recover adequate damages or obtain other desired relief.

Under the Hatch-Waxman Act, one or more motivated third parties may file an ANDA, seeking approval of a generic copy of an innovator 

product approved under the NDA pathway such as our PMO products, or an NDA under Section 505(b)(2), which may be for a new or improved version of 
the original innovator products. In certain circumstances, motivated third parties may file such an ANDA or NDA under Section 505(b)(2) as early as the 
so-called “NCE-1” date that is one year before the expiry of the five-year period of New Chemical Entity exclusivity or more generally four years after 
NDA approval. The third parties are allowed to rely on the safety and efficacy data of the innovator’s product, may not need to conduct clinical trials and 
can market a competing version of a product after the expiration or loss of patent exclusivity or the expiration or loss of regulatory exclusivity and often 
charge significantly lower prices. Upon the expiration or loss of patent protection or the expiration or loss of regulatory exclusivity for a product, the major 
portion of revenues for that product may be dramatically reduced in a very short period of time. If we are not successful in defending our patents and 
regulatory exclusivities, we will not derive the expected benefit from them.  As such, a third party could be positioned to market an ANDA or Section 
505(b)(2) product that competes with one of our products prior to the expiry of our patents if the third party successfully challenged the validity of our 
patents protecting the product.  

The patent landscape is continually evolving, and we may be able to assert that certain activities engaged in by third parties infringe our current 

or future patent rights. There has been, and we believe that there will continue to be, significant litigation in the biopharmaceutical and pharmaceutical 
industries regarding patent and other intellectual property rights. As such, the patents and patent applications that we own, license, have optioned, and rely 
on for exclusivity for our product candidates may be challenged.

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Uncertainty over intellectual property in the pharmaceutical and biotechnology industry has been the source of litigation and other disputes, 

which is inherently costly and unpredictable.

Litigation, interferences, oppositions, inter partes reviews, administrative challenges or other similar types of proceedings are, have been and 

may in the future be necessary in some instances to determine the validity and scope of certain of our proprietary rights, and in other instances to determine 
the validity, scope or non-infringement of certain patent rights claimed by third parties to be pertinent to the manufacture, use or sale of our product 
candidates or products. We may also face challenges to our patent and regulatory exclusivities covering our products by third parties, including 
manufacturers of generics and biosimilars that may choose to launch or attempt to launch their products before the expiration of our patent or regulatory 
exclusivity. Litigation, interferences, oppositions, inter partes reviews, administrative challenges or other similar types of proceedings are unpredictable and 
may be protracted, expensive and distracting to management. The outcomes of such proceedings could adversely affect the validity and scope of our 
patents or other proprietary rights, hinder our ability to manufacture and market our products, require us to seek a license for the infringed products or 
technology or result in the assessment of significant monetary damages against us that may exceed amounts, if any, accrued in our financial statements. An 
adverse determination in a judicial or administrative proceeding or a failure to obtain necessary licenses could prevent us from developing, manufacturing 
or selling our products. Furthermore, payments under any licenses that we are able to obtain would reduce our profits derived from our products. Any of 
these circumstances could result in financial, business or reputational harm to us or could cause a decline or volatility in our stock price.

On September 16, 2011, the Leahy-Smith America Invents Act (the “Leahy-Smith Act”), was signed into law. The Leahy-Smith Act includes a 

number of significant changes to U.S. patent law, including provisions that affect the way patent applications will be prosecuted, and may also affect patent 
litigation. The USPTO has issued regulations and procedures to govern administration of the Leahy-Smith Act. In view of the long timelines for 
interpreting legal provisions in the court system and the evolving nature of our laws, it is not clear what, if any, impact the Leahy-Smith Act will have on 
the operation of our business. However, the Leahy-Smith Act and its implementation could increase the uncertainties and costs surrounding the prosecution 
of our patent applications and the enforcement or defense of our issued patents, all of which could have a material adverse effect on our business and 
financial condition. For instance, a third party may petition the Patent Trial and Appeal Board (“PTAB”) seeking to challenge some or all of the claims in 
any of our patents through an inter partes review or other post-grant proceeding. Should the PTAB institute an inter partes review or other proceeding and 
decide that some or all of the claims in the challenged patent are unpatentable or invalid, such a decision, if upheld on appeal, could have a material adverse 
effect on our business and financial condition.

Our business prospects will be impaired if third parties successfully assert that our products, product candidates, or platform technologies 

infringe proprietary rights of such third parties.

Similar to us, competitors continually seek intellectual property protection for their technology. Several of our development programs, 
particularly gene therapy programs, focus on therapeutic areas that have been the subject of extensive research and development by third parties for many 
years and have been protected with third party patent rights.  Due to the amount of intellectual property in our various fields of technology, we cannot be 
certain that we do not infringe intellectual property rights of competitors or other third parties or that we will not infringe intellectual property rights of 
competitors or other third parties granted or created in the future. Moreover, activities we conduct or those conducted on our behalf in connection with the 
development of our product candidates may not be protected from infringement under the so-called Safe Harbor of the Hatch-Waxman Act and thus be 
found to infringe the patent rights of third parties.  Our competitors or other third parties might have obtained, or could obtain in the future, patents that 
threaten, limit, interfere with or eliminate our ability to make, use and sell our products, product candidates or platform technologies in important 
commercial markets.  

Due to the nature of our various partnerships, collaborators, licensors, CROs, CMOs and the like, we may be subjected to claims of infringement 

arising from activities conducted by these third parties in connection with our product candidates, whether or not such activities are authorized by us.  In 
addition, we may have contractual obligations to indemnify these partners from claims of infringement or declaratory relief.  As a result, we may be subject 
to substantial unforeseen costs, distraction, and financial liability if a third party making such a claim was successful in obtaining a final judgment of 
infringement and validity.

In order to maintain or obtain freedom to operate for our products and product candidates, we may incur significant expenses, including those 
associated with entering into agreements with third parties that require milestone and royalty payments.  Additionally, if we were to challenge the patent 
rights of our competitors or otherwise defend against allegations of infringement, misappropriation, breach of contract or related claims, we could incur 
substantial costs and ultimately might not be successful.

If our products, product candidates, or platform technologies are alleged to infringe or are determined to infringe enforceable proprietary rights 

of others, we could incur substantial costs and may have to:

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obtain rights or licenses from others, which might not be available on commercially reasonable terms or at all;

abandon development of an infringing product candidate, or cease commercialization of an infringing product;

redesign our products, product candidates or processes to avoid infringement;

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•

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pay damages; and/or

defend litigation or administrative proceedings which might be costly whether we win or lose, and which could result in a substantial 
diversion of financial and management resources.

Any of these events could result in product and product candidate development delays or cessation, and as such substantially harm our potential 

earnings, financial condition and operations. The patent landscape of our product candidates and products is continually evolving and multiple parties, 
including both commercial entities and academic institutions, may have rights to claims or may be pursuing additional claims that could provide these 
parties a basis to assert that our products, product candidates or platform technologies infringe on the intellectual property rights of such parties. There has 
been, and we believe that there will continue to be, significant litigation in the biopharmaceutical and pharmaceutical industries regarding patent and other 
intellectual property rights.

Risks Related to our Business Operations

Failure to comply with healthcare and other regulations is subject to substantial penalties and our business, operations and financial 

condition could be adversely affected.

As a manufacturer of pharmaceuticals, within the U.S., certain federal and state healthcare laws and regulations apply to or affect our business. 

The laws and regulations include:

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federal healthcare anti-kickback law, which prohibit, among other things, persons from soliciting, receiving or providing remuneration, 
directly or indirectly, to induce either the referral of an individual, for an item or service or the purchasing or ordering of a good or 
service, for which payment may be made under federal healthcare programs such as Medicare and Medicaid;

federal false claims laws which prohibit, among other things, individuals or entities from knowingly presenting, or causing to be 
presented, information or claims for payment from Medicare, Medicaid or other third-party payors that are false or fraudulent;

the Federal Food, Drug and Cosmetic Act, which among other things, strictly regulates drug product and medical device marketing, 
prohibits manufacturers from marketing such products for off-label use and regulates the distribution of samples;

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

the so-called “federal sunshine” law, which requires pharmaceutical and medical device companies to monitor and report certain financial 
interactions with teaching hospitals, physicians and certain non-physician practitioners to the federal government for re-disclosure to the 
public; and

state law equivalents of the above federal laws, such as anti-kickback and false claims laws which may apply to items or services 
reimbursed by any third party payor, including commercial insurers, state laws regulating interactions between pharmaceutical 
manufactures and healthcare providers, and state laws governing the privacy and security of health information in certain circumstances, 
many of which differ from each other in significant ways and often are not preempted by federal laws, thus complicating compliance 
efforts.

The number and complexity of both federal and state laws continues to increase; the laws contain ambiguous requirements or require 
administrative guidance for implementation; government interpretations of the laws continue to evolve; and additional governmental resources are being 
used to enforce these laws and to prosecute companies and individuals who are believed to be violating them. We anticipate that government scrutiny of 
pharmaceutical sales and marketing practices will continue for the foreseeable future and subject us to the risk of government investigations and 
enforcement actions. 

We have implemented a compliance program, which is based on industry best practices and is designed to ensure that our activities comply with 

all applicable laws, regulations and industry standards. While our compliance program is intended to detect and prevent potential non-compliance, we 
cannot be certain that compliance will be assured. If our operations are found to be in violation of any of the laws described above or any other laws, rules 
or regulations that apply to us, we will be subject to penalties, including civil and criminal penalties, damages, fines and the curtailment or restructuring of 
our operations. Any penalties, damages, fines, curtailment or restructuring of our operations could adversely affect our ability to operate our business and 
our financial results. Responding to government investigations, defending any claims raised, and any resulting fines, restitution, damages and penalties, 
settlement payments or administrative actions, as well as any related actions brought by stockholders or other third parties, could have a material impact on 
our reputation, business and financial condition and divert the attention of our management from operating our business. Even if we successfully defend 
against an action against us for violation of a law, the action and our defense could 

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nonetheless cause us to incur significant legal expenses and divert our management’s attention from the operation of our business. Moreover, achieving and 
sustaining compliance with applicable federal and state privacy, security, fraud and reporting laws may prove costly.

If we, our collaborators, or any third-party manufacturers engaged by us or our collaborators fail to comply with environmental, health and 

safety laws and regulations, we could become subject to fines or penalties or incur costs that could harm our business.

We, our collaborators, and any third-party manufacturers we engage are subject to numerous environmental, health and safety laws and 
regulations, including those governing laboratory procedures and the generation, handling, use, storage, treatment, manufacture, transportation and disposal 
of, and exposure to, hazardous materials and wastes, as well as laws and regulations relating to occupational health and safety, including those governing 
laboratory procedures, exposure to blood-borne pathogens and the handling of bio-hazardous materials. Our operations involve the use of hazardous 
materials, including organic and inorganic solvents and reagents. Although we believe that our activities conform in all material respects with such 
environmental laws, there can be no assurance that violations of these laws will not occur in the future as a result of human error, accident, equipment 
failure or other causes. Liability under environmental, health and safety laws can be joint and several and without regard to fault or negligence. The failure 
to comply with past, present or future laws could result in the imposition of substantial fines and penalties, remediation costs, property damage and 
personal injury claims, loss of permits or a cessation of operations, and any of these events could harm our business and financial condition. We expect that 
our operations will be affected by other new environmental, health and workplace safety laws on an ongoing basis, and although we cannot predict the 
ultimate impact of any such new laws, they may impose greater compliance costs or result in increased risks or penalties, which could harm our business. 

Further, with respect to the operations of any current or future collaborators or third party contract manufacturers, it is possible that if they fail to 

operate in compliance with applicable environmental, health and safety laws and regulations or properly dispose of wastes associated with our product or 
product candidates, we could be held liable for any resulting damages, suffer reputational harm or experience a disruption in the manufacture and supply of 
our product or product candidates.

Comprehensive tax reform in the U.S. and future guidance could adversely affect our business and financial condition.

The Tax Cuts and Jobs Act (the “TCJA”) was enacted on December 22, 2017 in the U.S. The TCJA contains significant changes to corporate 

taxation, including reduction of the U.S. corporate tax rate from 35% to 21%, elimination of U.S. tax on foreign earnings (subject to certain important 
exceptions), one-time taxation of offshore earnings at reduced rates regardless of whether they are repatriated, limitation of the tax deduction for interest 
expense, immediate deductions for certain new investments instead of deductions for depreciation expense over time, and modifying or repealing many 
business deductions and credits. On March 27, 2020, President Trump signed into law the “Coronavirus Aid, Relief, and Economic Security Act” or the 
CARES Act, which included certain changes in tax law intended to stimulate the U.S. economy in light of the COVID-19 outbreak, including temporary 
beneficial changes to the treatment of net operating losses, interest deductibility limitations and payroll tax matters.

We continue to monitor changes in tax laws in the U.S. and the impact of proposed and enacted legislation in the international jurisdictions in 

which the company operates. President Biden has provided informal guidance on tax law changes he may support. Among other things, his proposals 
would raise the rate on both domestic and foreign income. If any of these proposals are ultimately enacted into legislation, they could materially impact our 
tax provision, cash tax liability and effective tax rate.

The COVID-19 pandemic has resulted, and may continue to result in disruptions to our commercialization, clinical trials, manufacturing 

and other business operations, which could have a material adverse effect on our business, financial condition, operating results, cash flows and 
prospects.

The COVID-19 pandemic has presented a substantial public health and economic challenge around the world. The rapid spread of COVID-19 

has led to the implementation of various responses, including government-imposed quarantines, shelter-in-place mandates, sweeping restrictions on travel, 
mandatory shutdowns for non-essential businesses, requirements regarding social distancing, and other public health safety measures, as well as reported 
adverse impacts on healthcare resources, facilities and providers across the United States and in other countries. In response to the pandemic, healthcare 
providers have, and may need to further, reallocate resources, such as physicians, staff, hospital beds, and intensive care unit facilities, as they prioritize 
limited resources and personnel capacity to focus on the treatment of patients with COVID-19 and implement limitations on access to hospitals and other 
medical institutions due to concerns about the spread of COVID-19 in such settings. These responses may be extended by the duration of the outbreak, 
periodic spikes in infection rates due to new strains of the virus including Delta, Omicron or otherwise, local outbreaks of the virus, the broad availability 
of effective vaccines, new information that will emerge concerning the severity of the coronavirus and the actions to contain the coronavirus or treat its 
impact. These actions have and may continue to negatively impact commercialization, clinical trials, manufacturing and other business operations, 
including:

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Commercial: The response to COVID-19 by healthcare providers has made it difficult for some patients, especially those dependent on a 
hospital setting, to receive infusions or initiate treatment with our commercial products. In addition, as a result of the pandemic, some 
patients may choose to delay or stop treatment to avoid a visit to a hospital or a visit of a third party in their homes to minimize the risk of 
infection. In some cases, at home infusions have been delayed due to outbreaks of COVID-19 among trained personnel and staffing 
shortages. The impact of COVID-19 may also result in delays in processing reauthorizations and modifications to program benefits by 
insurers, making it difficult for patients to obtain or maintain favorable coverage decisions for our products. In addition, the increase in 
unemployment due to the pandemic has resulted in decreased insurance coverage for many individuals. These challenges may continue 
for the duration of the COVID-19 pandemic, which is uncertain, and are expected to reduce our revenue and cash flows.

Clinical trials: The impact of COVID-19 has caused disruptions and may cause delays in some of our clinical trials. Missing data could 
undermine data integrity and probability of success. The response to COVID-19 by healthcare providers and regulatory agencies could 
delay the commencement of trials, site initiation, compliance in the trials, the completion of trials, including the completion of post-
marketing requirements and commitments, slow down enrollment, and make the ongoing collection of data for patients enrolled in studies 
more difficult or intermittent. In addition, as COVID-19 continues to spread, some participants and clinical investigators may be unable or 
unwilling to comply with clinical trial protocols. For example, quarantines or other travel limitations (whether voluntary or required) were 
implemented in many countries during the past year, and may impede participant movement, affect sponsor access to study sites, or 
interrupt healthcare services, which may negatively impact the execution of clinical trials. Significant delays or disruptions to our clinical 
trials could adversely affect our ability to timely initiate studies, conduct successful studies, obtain or maintain regulatory approvals, or 
commercialize our product candidates. 

Manufacturing: A significant outbreak at one of our partner sites could lead to delays in the manufacturing of our products and product 
candidates.  In addition, the need to prioritize rated orders issued by the Federal Emergency Management Agency pursuant to the U.S. 
Defense Production Act could impact the manufacturing, supply chain and distribution of our products and product candidates. 

Operations: On March 13, 2020, to protect the health of our employees and their families, and our communities, and in accordance with 
direction from state and local government authorities, we instituted mandatory work-from-home for all employees and contingent workers 
other than those who are facility-dependent.  With increased availability of vaccines and public health guidelines evolving to reflect their 
availability, we have begun to re-open our offices to employees who are not facility-dependent and we are working toward the goal of 
fully re-opening our offices when permitted by applicable local, state and federal public health guidance. We will continue, however, to 
monitor and make adjustments in response to the public health environment, together with local, state and federal guidance regarding 
workplace protective measures, including travel restrictions, quarantines, and business shutdowns. If there is an increase in COVID-19 
infection rates or new outbreaks, our operations may be adversely impacted. Remote working increase our vulnerability to cyber security 
breaches. Further, if the spread of the COVID-19 pandemic continues and our operations are adversely impacted, including due to an 
outbreak in a facility, we risk a delay, default and/or nonperformance under existing agreements.

Any of the foregoing factors could have a material adverse impact on our business, financial condition, operating results, cash flows and 

prospects.  The extent to which COVID-19 impacts our operations and those of our third-party partners will depend on future developments, which are 
highly uncertain and cannot be predicted with confidence, including the duration of the pandemic, additional or modified government actions, new 
information which emerges concerning the severity of COVID-19 and the actions taken to contain the virus or treat its impact, among others.  In particular, 
the speed of the continued spread of COVID-19 globally, and the magnitude of interventions to contain the spread of the virus, will determine the impact of 
the pandemic on our operations.

Our ability to use net operating loss carryforwards and other tax attributes to offset future taxable income may be limited as a result of future 

transactions involving our common stock.

In general, under Section 382 of the Internal Revenue Code, a corporation that undergoes an "ownership change" is subject to limitations on its 
ability to utilize its pre-change net operating losses and certain other tax assets to offset future taxable income. In general, an ownership change occurs if 
the aggregate stock ownership of certain stockholders increases by more than 50 percentage points over such stockholders’ lowest percentage ownership 
during the testing period, which is generally three years. An ownership change could limit our ability to utilize our net operating loss and tax credit 
carryforwards for taxable years including or following such “ownership change.” Limitations imposed on the ability to use net operating losses and tax 
credits to offset future taxable income could require us to pay U.S. federal income taxes earlier than we estimated or than would have otherwise been 
required if such limitations were not in effect and could cause such net operating losses and tax credits to expire unused, in each case reducing or 
eliminating the benefit of such net operating losses and tax credits and potentially adversely affecting our financial position. Similar rules and limitations 
may apply for state income tax purposes.

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We are winding down our expired U.S. government contracts, and the U.S. government may deny payment of some or all of the currently 

outstanding amounts owed to us. In addition, further development of our infectious disease programs may be limited by the intellectual property and 
other rights retained by the U.S. government.

We have historically relied on U.S. government contracts and awards to fund and support certain infectious disease development programs. 

These contracts expired and we are currently involved in contract close-out activities. The U.S. government has the right to perform additional audits prior 
to making final payment of costs and fees. If we are not able to adequately support costs incurred or other government requirements, the government may 
deny payment of some or all of the currently outstanding amounts owed to us. In addition, the U.S. government may have the right to develop all or some 
parts of product candidates that we have developed under a U.S. government contract after such contract has terminated or expired.

Our employees, principal investigators, consultants and strategic partners may engage in misconduct or other improper activities, including 

non-compliance with regulatory standards and requirements and insider trading. 

We are exposed to the risk of fraud or other misconduct by our employees, principal investigators, consultants and strategic partners. Misconduct 

by these parties could include intentional failures to comply with the regulations of the FDA and non-U.S. regulators, provide accurate information to the 
FDA and non-U.S. regulators, comply with healthcare fraud and abuse laws and regulations in the U.S. and abroad, report financial information or data 
accurately or disclose unauthorized activities to us. We adopted a code of conduct applicable to all of our employees, 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 comply with these 
laws or regulations. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, those actions 
could have a significant impact on our business, including the imposition of significant fines or other sanctions.

Failure to retain our key personnel or an inability to attract and retain additional qualified personnel would cause our future growth and our 

ability to compete to suffer.

We are highly dependent on the efforts and abilities of the principal members of our senior management. Additionally, we have scientific 

personnel with significant and unique expertise in RNA-targeted therapeutics and gene therapy technologies. The loss of the services of any one of the 
principal members of our managerial team or staff may prevent us from achieving our business objectives.

The competition for qualified personnel in the biotechnology field is intense, and our future success depends upon our ability to attract, retain, 
motivate and support such personnel. The COVID-19 pandemic has exacerbated workforce competition and workforce shortages. In order to develop and 
commercialize our products successfully, we will be required to retain key management and scientific employees. In certain instances, we may also need to 
expand or replace our workforce and our management ranks. In addition, we rely on certain consultants and advisors, including scientific and clinical 
advisors, to assist us in the formulation and advancement of our research and development programs. Our consultants and advisors may be employed by 
other entities or have commitments under consulting or advisory contracts with third parties that limit their availability to us, or both. If we are unable to 
attract, assimilate or retain such key personnel, our ability to advance our programs would be adversely affected.

Turnover rates of key employees continues to vary substantially during the pandemic. Over the last two years, we have had several executive 

management changes. Leadership transitions can be inherently difficult to manage and may cause uncertainty or a disruption to our business or may 
increase the likelihood of turnover in other key officers and employees. If we lose the services of one or more of our senior management or key employees, 
or if one or more of them decides to join a competitor or otherwise to compete with us, our business could be harmed.

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Risks Related to our Financial Condition and Capital Requirements 

We have incurred operating losses since our inception and we may not achieve or sustain profitability.

We incurred an operating loss of $459.7 million for the year ended December 31, 2021. Our accumulated deficit was $3.2 billion as of December 
31, 2021. Although we currently have three commercially approved products in the U.S., we believe that it will take us some time to attain profitability and 
positive cash flow from operations. Since our products and product candidates target small patient populations, the per-patient drug pricing must be high in 
order to recover our development and manufacturing costs, fund adequate patient support programs, fund additional research and achieve profitability. We 
may be unable to maintain or obtain sufficient sales volumes at a price high enough to justify our product development efforts and our sales, marketing and 
manufacturing expenses. 

We have generally incurred expenses related to research and development of our technologies and product candidates and from general and 
administrative expenses that we have incurred while building our business infrastructure. We anticipate that our expenses will increase substantially if 
and/or as we:

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continue the commercialization of our products in the U.S.;

expand the global footprint of our products outside of the U.S.;

establish our sales, marketing and distribution capabilities;

continue our research, pre-clinical and clinical development of our product candidates;

respond to and satisfy requests and requirements from regulatory authorities in connection with development and potential approval of our 
product candidates;

initiate additional clinical trials for our product candidates;

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

acquire or in-license other product candidates;

maintain, expand and protect our intellectual property portfolio;

increase manufacturing capabilities, including capital expenditures related to our real estate facilities and entering into manufacturing 
agreements;

hire additional clinical, quality control and scientific personnel; and

add operational, financial and management information systems and personnel, including personnel to support our product development 
and planned future commercialization efforts.

As a result, we expect to continue to incur significant operating losses at least through 2021. Because of the numerous risks and uncertainties 

associated with developing biopharmaceutical products, we are unable to predict the extent of any future losses or when, or if, we will become profitable.

We will need to raise additional funding, which may not be available on acceptable terms, or at all. Failure to obtain this necessary capital 

when needed may force us to delay, limit or terminate our product development efforts or other operations.

We will likely require additional capital from time to time in the future in order to meet FDA post-marketing approval requirements and market 
and sell our products as well as to continue the development of product candidates in our pipeline, to prepare for potential commercialization of additional 
product candidates in our pipeline, to expand our product portfolio and to continue or enhance our business development efforts. The actual amount of 
funds that we may need and the sufficiency of the capital we have or are able to raise will be determined by many factors, some of which are in our control 
and others that are beyond our control.

While we are currently well capitalized, we may use available capital resources sooner than we expect under our current operating plan. In 

addition, our operating plan may change. We may need or choose to seek additional funds sooner than planned, through equity or debt financings, 
government or other third-party funding, marketing and distribution arrangements and other collaborations, strategic alliances, funded research and 
development arrangements and licensing arrangements or a combination of these approaches. In any event, we expect to require additional capital to 
expand future development efforts, obtain regulatory approval for, and to commercialize, our product candidates. Raising funds in the current economic 
environment may present additional challenges. Even if we believe we have sufficient funds for our current or future operating plans, we may seek 
additional capital if market conditions are favorable or in light of specific strategic considerations.

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Any additional fundraising efforts may divert our management from their day-to-day activities, which may adversely affect our ability to develop 

and commercialize our product candidates. In addition, we cannot guarantee that future financing will be available in sufficient amounts or on terms 
acceptable to us, if at all. In the event we receive negative data from our key clinical programs or encounter other major setbacks in our development, 
manufacturing or regulatory activities or in our commercialization efforts, our stock price is likely to decline, which would make a future financing more 
difficult.  Moreover, the terms of any financing may adversely affect the holdings or the rights of our stockholders.  The issuance of additional securities, 
whether equity or debt, by us, or the possibility of such issuance, may cause the market price of our shares to decline. The sale of additional equity or 
convertible securities may dilute all of our stockholders. The incurrence of indebtedness may result in increased fixed payment obligations and we may be 
required to agree to certain restrictive covenants, such as limitations on our ability to incur additional debt, limitations on our ability to acquire, sell or 
license intellectual property rights and other operating restrictions that could adversely impact our ability to conduct our business. We could also be 
required to seek funds through arrangements with collaborative partners or otherwise at an earlier stage than otherwise would be desirable and we may be 
required to relinquish rights to some of our technologies or product candidates or otherwise agree to terms unfavorable to us, any of which may have a 
material adverse effect on our business, operating results and prospects.

If we are unable to obtain funding on a timely basis, we may be required to significantly curtail, delay or discontinue one or more of our research 

or development programs or the commercialization of any product, if approved, or be unable to expand our operations or otherwise capitalize on our 
business opportunities, as desired, which could materially affect our business, financial condition and results of operations.

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

We may seek additional capital through a combination of private and public equity offerings, debt financings, collaborations and strategic and 

licensing arrangements. To the extent that we raise additional capital through the sale of common stock or securities convertible or exchangeable into 
common stock, the ownership interest of our stockholders in our company may be diluted. In addition, the terms of any such securities may include 
liquidation or other preferences that materially adversely affect the rights of our stockholders. Debt financing, if available, may increase our fixed payment 
obligations and may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, 
making capital expenditures or declaring dividends. If we raise additional funds through collaboration, strategic partnerships and licensing arrangements 
with third parties, we may have to relinquish valuable rights to our product candidates, our intellectual property, future revenue streams or grant licenses on 
terms that are not favorable to us.

The estimates and judgments we make, or the assumptions on which we rely, in preparing our consolidated financial statements could prove 

inaccurate.

Our consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the U.S. The 
preparation of these consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of our assets, liabilities, 
revenues and expenses, the amounts of charges accrued by us and related disclosure of contingent assets and liabilities. Such estimates and judgments 
include revenue recognition, inventory, valuation of stock-based awards, research and development expenses and income tax. We base our estimates on 
historical experience, facts and circumstances known to us and on various other assumptions that we believe to be reasonable under the circumstances. We 
cannot provide assurances, however, that our estimates, or the assumptions underlying them, will not change over time or otherwise prove inaccurate. If 
this is the case, we may be required to restate our consolidated financial statements, which could, in turn, subject us to securities class action litigation. 
Defending against such potential litigation relating to a restatement of our consolidated financial statements would be expensive and would require 
significant attention and resources of our management. Moreover, our insurance to cover our obligations with respect to the ultimate resolution of any such 
litigation may be inadequate. As a result of these factors, any such potential litigation could have a material adverse effect on our financial results and cause 
our stock price to decline, which could in turn subject us to securities class action litigation.

Risks Related to Our Common Stock

Our stock price is volatile and may fluctuate due to factors beyond our control.

The market prices for and trading volumes of securities of biotechnology companies, including our securities, has historically been volatile. Our 
stock has had significant swings in trading prices, in particular in connection with our public communications regarding feedback received from regulatory 
authorities. For example, over the last twelve months, as of the date of this report, our stock has increased as much as 16% in a single day or decreased as 
much as 13% in a single day. The market has from time to time 

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experienced significant price and volume fluctuations unrelated to the operating performance of particular companies. The market price of our common 
stock may fluctuate significantly due to a variety of factors, including but not limited to:

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the commercial performance of our products in the U.S.;

the timing of our submissions to regulatory authorities and regulatory decisions and developments;

positive or negative clinical trial results or regulatory interpretations of data collected in clinical trials conducted by us, our strategic 
partners, our competitors or other companies with investigational drugs targeting the same, similar or related diseases to those targeted by 
us;

delays in beginning and completing pre-clinical and clinical trials for potential product candidates;

delays in entering or failing to enter into strategic relationships with respect to development and/or commercialization of our products or 
product candidates or entry into strategic relationships on terms that are not deemed to be favorable to us;

technological innovations, product development or additional commercial product introductions by ourselves or competitors;

changes in applicable government regulations or regulatory requirements in the approval process;

developments concerning proprietary rights, including patents and patent litigation matters, such as developments in the interferences 
declared by the USPTO, including in the near term any outcomes of ongoing interference proceedings and over the longer term the 
outcomes from any related appeals;

public concern relating to the commercial value, efficacy or safety of any of our products;

our ability to obtain funds, through the issuance of equity or equity linked securities or incurrence of debt, or other corporate transactions;

comments by securities analysts;

developments in litigation against us;

changes in senior management; or

general market conditions in our industry or in the economy as a whole.

Broad market and industry factors may seriously affect the market price of a company’s stock, including ours, regardless of actual operating 
performance. For example, the trading prices of biopharmaceutical companies have been highly volatile as a result of the COVID-19 pandemic, which 
continues to rapidly evolve.  In addition, in the past, following periods of volatility in the overall market and the market price of a particular company’s 
securities, securities class action litigation has often been instituted against these companies. Such litigation could result in substantial costs and a diversion 
of our management’s attention and resources.

Our revenues and operating results could fluctuate significantly, which may adversely affect our stock price.

Our revenues and operating results may vary significantly from year-to-year and quarter-to-quarter as well as in comparison to the corresponding 

quarter of the preceding year. Variations my result from one or more factors, including, without limitation:

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timing of purchase orders;

changes in coverage and reimbursement policies of health plans and other health insurers, especially in relation to those products that are 
currently manufactured, under development or identified for future development by us;

re-authorizations processes that may be required for patients who initially obtained coverage by third parties, including government 
payors, managed care organizations and private health insurers;

transition from temporary billing codes established by the CMS to permanent medical codes;

timing of approval of applications filed with the FDA;

timing of product launches and market acceptance of products launched;

changes in the amounts spent to research, develop, acquire, license or promote new and existing products;

results of clinical trial programs;

serious or unexpected health or safety concerns with our product or product candidates and any resulting clinical holds;

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•

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introduction of new products by others that render one or more of our products obsolete or noncompetitive;

the ability to maintain selling prices and gross margins on our products;

increases in the cost of raw materials contained within our products and product candidates;

manufacturing and supply interruptions, including product rejections or recalls due to failure to comply with manufacturing 
specifications;

timing of revenue recognition relating to our distribution agreements;

the ability to protect our intellectual property from being acquired by other entities;

the ability to avoid infringing the intellectual property of others; 

the continued impact of the ongoing COVID-19 pandemic; and 

the addition or loss of customers.

In addition, in one or more future periods, our results of operations may fall below the expectations of securities analysts and investors. In that 

event, the market price of our common stock could decline.

Provisions of our certificate of incorporation, bylaws and Delaware law might deter acquisition bids for us that might be considered 

favorable and prevent or frustrate any attempt to replace or remove the then-current management and board of directors.

Certain provisions of our certificate of incorporation and bylaws may make it more difficult for a third party to acquire control of us or effect a 

change in our board of directors and management. These provisions include:

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when the board is comprised of six or more directors, classification of our board of directors into two classes, with one class elected each 
year;

directors may only be removed for cause by the affirmative vote of a majority of the voting power of all the then-outstanding shares of 
voting stock;

prohibition of cumulative voting of shares in the election of directors;

right of the board of directors to elect directors to fill a vacancy created by the expansion of the board of directors or the resignation, 
death, disqualification or removal of a director;

express authorization of the board of directors to make, alter or repeal our bylaws;

prohibition on stockholder action by written consent;

advance notice requirements for nominations for election to our board or for proposing matters that can be acted upon by stockholders at 
stockholder meetings;

the ability of our board of directors to authorize the issuance of undesignated preferred stock, the terms and rights of which may be 
established and shares of which may be issued without stockholder approval, including rights superior to the rights of the holders of 
common stock; and

a super-majority (66 2/3%) of the voting power of all of the then-outstanding shares of capital stock are required to amend, rescind, alter 
or repeal our bylaws and certain provisions of our certificate of incorporation.

In addition, we are governed by the provisions of Section 203 of the Delaware General Corporation Law, which may prohibit certain business 

combinations with stockholders owning 15% or more of our outstanding voting stock. These and other provisions in our certificate of incorporation and our 
bylaws and in the Delaware General Corporation Law could make it more difficult for stockholders or potential acquirers to obtain control of our board of 
directors or initiate actions that are opposed by the then-current board of directors.

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A significant number of shares of our common stock are issuable pursuant to outstanding stock awards, and we expect to issue additional 

stock awards and shares of common stock to attract and retain employees, directors and consultants. We may also issue shares of common stock to 
finance our operations and in connection with our strategic goals. Exercise of these awards and sales of shares will dilute the interests of existing 
security holders and may depress the price of our common stock.

Currently, our Amended and Restated Certificate of Incorporation authorizes the issuance of up to 198.0 million shares of common stock. As of 
December 31, 2021, there were approximately 87.1 million shares of common stock outstanding and outstanding awards to purchase 8.2 million shares of 
common stock under various incentive stock plans. Additionally, as of December 31, 2021, there were approximately 4.2 million shares of common stock 
available for future issuance under our 2018 Equity Incentive Plan, approximately 0.4 million shares of common stock available for issuance under our 
Amended and Restated 2013 Employee Stock Purchase Plan, and approximately 1.5 million shares of common stock available for issuance under our 2014 
Employment Commencement Incentive Plan.  

We may issue additional shares to grant equity awards to our employees, officers, directors and consultants under our 2018 Equity Incentive 

Plan, our 2013 Employee Stock Purchase Plan or our 2014 Employment Commencement Incentive Plan. We may also issue additional common stock and 
warrants from time to time to finance our operations and in connection with strategic transactions, such as acquisitions and licensing. For example, in 
February 2020, we issued and sold 2,522,227 shares of common stock to Roche Finance in connection with the entry into the collaboration agreement with 
Roche. 

The issuance of additional shares of common stock or warrants to purchase common stock and the perception that such issuances may occur or 

exercise of outstanding warrants or stock options may have a dilutive impact on other stockholders and could have a material negative effect on the market 
price of our common stock.

Future sales of our common stock in the public market could cause our share price to fall.

Sales of a substantial number of our common stock in the public market, including sales by members of our management or board of directors, or 

the perception that these sales might occur, could depress the market price of our common stock and could impair our ability to raise capital through the 
sale of additional equity or equity-related securities.

Risks Related to Our Credit Agreement and Convertible Senior Notes 

Our indebtedness resulting from our credit agreement could adversely affect our financial condition or restrict our future operations.

On December 13, 2019, we entered into a loan agreement (the “Credit Agreement”) with BioPharma Credit PLC, as the collateral agent and a 

lender (“BioPharma”), and BioPharma Credit Investments V (Master) LP, as a lender (together with BioPharma in its capacity as a lender, and each of their 
respective successors and assigns at any time party to the Credit Agreement, the “Lenders” and each a “Lender”) that provides for a senior secured term 
loan facility (the “Loan Facility”) of up to $500.0 million to be funded in two tranches: (i) a Tranche A Loan in an aggregate principal amount of $250.0 
million (the “Tranche A Loan”), which was funded on December 20, 2019; and (ii) a Tranche B Loan in an aggregate principal amount of up to $250.0 
million (the “Tranche B Loan”, and together with the Tranche A Loan, the “Term Loans”).  We drew the $250.0 million Tranche A Loan in full on 
December 20, 2019.  

On September 24, 2020, we entered into a first amendment to loan agreement (the “Amendment”) which amends the Credit Agreement. The 

Amendment increases the aggregate principal amount of the Tranche B Loan under the Loan Facility from $250.0 million to $300.0 million.  On November 
2, 2020, we drew the $300.0 million Tranche B Loan. In addition, the Amendment extends the maturity date for the Tranche B Loan to December 31, 2024 
and increases the funding fee payable to each Lender providing a portion of the Tranche B Loan on the date the Tranche B Loan is funded by 120 basis 
points to 2.95%.  

All obligations under the Credit Agreement are secured pursuant to the terms of a security agreement and subject to certain exceptions, by 

security interests in certain collateral (collectively, the “Collateral”), which includes the following: (1) any and all U.S. intellectual property owned by, and 
rights to U.S. intellectual property licensed to, us relating to any pharmaceutical composition in which eteplirsen or golodirsen is indicated to be 
administered for use in the treatment of Duchenne in patients who have a confirmed mutation of the dystrophin gene that is amenable to exon 51 or 53 
skipping, respectively, or for any other use approved by the FDA (the “Loan Products”), (2) 100% of the equity interests directly held by us in certain 
wholly owned domestic subsidiaries and 65% of the equity interests in certain other wholly owned domestic subsidiaries, and (3) all of our personal 
property, including, without limitation, cash held in all our deposit accounts.  Any non-U.S. intellectual property related to the Loan Products and 
intellectual property unrelated in any way to the Loan Products anywhere are not part of the Collateral.

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The Credit Agreement contains negative covenants that, among other things and subject to certain exceptions, restrict our ability to:

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sell or dispose of assets, including certain intellectual property;

amend, modify or waive certain material agreements or organizational documents;

consolidate or merge;

incur additional indebtedness;

incur additional liens on the Collateral;

pay dividends or make any distribution or payment on or redeem, retire or purchase any equity interests; and

make payments of certain subordinated indebtedness.

The Credit Agreement requires us to have consolidated liquidity of at least $100.0 million as of the last day of each month.  Additionally, the 

Credit Agreement contains certain representations and warranties, affirmative covenants and provisions relating to events of default, which include, but are 
not limited to, the following: (i) nonpayment of principal, interest and other amounts; (ii) failure to comply with covenants; (iii) the occurrence of a 
material adverse change in (A) our ability to fulfill the payment or performance obligations under the Credit Agreement and related documents or (B) the 
binding nature of the Credit Agreement and related documents; (iv) the rendering of judgments or orders or the acceleration or payment default by us in 
respect of other indebtedness in excess of $10.0 million; and (v) certain insolvency and ERISA events. A change of control triggers a mandatory 
prepayment of the Term Loans, and we may not have sufficient funds or the ability to raise the funds necessary to prepay them.

Servicing our Credit Agreement and 1.50% notes due 2024 (the “Notes”) requires a significant amount of cash, and we may not have 

sufficient cash flow to pay our debt. 

In 2017, we issued $570.0 million aggregate principal amount of Notes, pursuant to that certain indenture, dated as of November 14, 2019, 

between us, as issuer, and U.S. Bank National Association, as trustee. Our ability to make scheduled payments of the principal of, to pay interest on, or to 
refinance our indebtedness, including the Credit Agreement and the Notes, depends on our future performance, which is subject to many factors, including, 
economic, financial, competitive and other, beyond our control. We do not expect our business to be able to generate cash flow from operations in the 
foreseeable future, sufficient to service our debt and make necessary capital expenditures and we may therefore be required to adopt one or more 
alternatives, such as selling assets, restructuring debt or obtaining additional equity capital on terms that may be onerous or highly dilutive. Our ability to 
refinance the term loan under the Credit Agreement, which matures in 2023, and the Notes, which are non-callable and mature in 2024, will depend on the 
capital markets and our financial condition at such time. We may not be able to engage in any of these activities or engage in these activities on desirable 
terms, which could result in a default on our debt obligations, and limit our flexibility in planning for and reacting to changes in our business.

We may not have the ability to raise the funds necessary to repurchase the Notes as required upon a fundamental change, and our future 

debt may contain limitations on our ability to repurchase the Notes.

Holders of the Notes will have the right to require us to repurchase their Notes for cash upon the occurrence of a fundamental change at a 

fundamental change repurchase price equal to 100% of the principal amount of the Notes to be repurchased, plus accrued and unpaid interest, if any. A 
fundamental change may also constitute an event of default or prepayment under, and result in the acceleration of the maturity of, our then-existing 
indebtedness. We cannot assure you that we will have sufficient financial resources, or will be able to arrange financing, to pay the fundamental change 
repurchase price in cash with respect to any Notes surrendered by holders for repurchase upon a fundamental change. In addition, restrictions under our 
then existing credit facilities or other indebtedness, if any, may not allow us to repurchase the Notes upon a fundamental change. Our failure to repurchase 
the Notes upon a fundamental change when required would result in an event of default with respect to the Notes which could, in turn, constitute a default 
under the terms of our other indebtedness, if any. If the repayment of the related indebtedness were to be accelerated after any applicable notice or grace 
periods, we may not have sufficient funds to repay the indebtedness and repurchase the Notes.

Capped call transactions entered into in connection with the Notes may impact the value of our common stock.

In connection with the Notes, we entered into capped call transactions (the “Capped Call Transactions”) with certain financial institutions. The 

Capped Call Transactions are expected to generally reduce the potential dilution upon conversion of the Notes into shares of our common stock.

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In connection with establishing their initial hedges of the Capped Call Transactions, these financial institutions or their respective affiliates may 
have entered into various derivative transactions with respect to our common stock and/or purchased our common stock. The financial institutions, or their 
respective affiliates, may modify their hedge positions by entering into or unwinding various derivatives with respect to our common stock and/or 
purchasing or selling our common stock or other securities of ours in secondary market transactions prior to the maturity of the Notes. This activity may 
have an impact on the value of our common stock. 

General Risks

We may be subject to product liability claims and our insurance may not be adequate to cover damages.

The current and future use of our product candidates by us and our collaborators in clinical trials, expanded access programs, the sale of our 

products, or the use of our products under emergency use vehicles may expose us to liability claims inherent to the manufacture, clinical testing, marketing 
and sale of medical products. These claims might be made directly by consumers or healthcare providers or indirectly by pharmaceutical companies, our 
collaborators or others selling such products. Regardless of merit or eventual outcome, we may experience financial losses in the future due to such product 
liability claims. We have obtained commercial general liability insurance coverage for our clinical trials and the sale of commercial products. However, we 
may not be able to maintain insurance coverage at a reasonable cost or in sufficient amounts to protect us against all losses. If a successful product liability 
claim or series of claims is brought against us for uninsured liabilities or in excess of insured liabilities, our assets may not be sufficient to cover such 
claims and our business operations could be impaired.

Violation of the General Data Protection Regulation could subject us to significant fines.

The GDPR increases our obligations with respect to clinical trials conducted in the member states of the EEA by expanding the definition of 

personal data to include coded data and requiring changes to informed consent practices and more detailed notices for clinical trial subjects and 
investigators. In addition, the GDPR increases the scrutiny that clinical trial sites located in the EEA should apply to transfers of personal data from such 
sites to countries that are considered to lack an adequate level of data protection, such as the U.S. The GDPR imposes substantial fines for breaches of data 
protection requirements, which can be up to four percent of global revenue or 20 million Euros, whichever is greater, and it also confers a private right of 
action on data subjects for breaches of data protection requirements. Compliance with these directives will be a rigorous and time-intensive process that 
may increase our cost of doing business, and despite those efforts, there is a risk that we may be subject to fines and penalties, litigation and reputational 
harm in connection with our European activities.

We have expanded, and may continue to expand, our organization and may experience difficulties in managing this growth, which could 

disrupt our operations. 

To support the expansion of our business activities, we have expanded, and may continue to expand, our full-time employee base, as well as our 

consultant and contractor base. Our management may need to divert a disproportionate amount of its attention away from our day-to-day activities and 
devote a substantial amount of time to managing these growth activities. Our ability to manage our growth properly and maintain compliance with all 
applicable rules and regulations will require us to continue to improve our operational, legal, financial and management controls, as well as our reporting 
systems and procedures. We may not be able to effectively manage the expansion of our operations, which may result in weaknesses in our infrastructure, 
operational mistakes, loss of business opportunities, loss of employees and reduced productivity among remaining employees. Our growth could require 
significant capital expenditures and may divert financial resources from other projects, such as the development of additional product candidates. If our 
management is unable to effectively manage our growth, our expenses may increase more than expected, our ability to generate and/or grow revenues 
could be reduced, and we may not be able to implement our business strategy.

Our sales and operations are subject to the risks of doing business internationally.

We are increasing our presence in international markets, including emerging markets, subjecting us to many risks that could adversely affect our 

business and revenues, such as:

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the inability to obtain necessary foreign regulatory or pricing approvals of products in a timely manner;

uncertainties regarding the collectability of accounts receivable;

fluctuations in foreign currency exchange rates that may adversely impact our revenues, net income and value of certain of our 
investments;

difficulties in staffing and managing international operations;

the imposition of governmental controls;

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less favorable intellectual property or other applicable laws;

increasingly complex standards for complying with foreign laws and regulations that may differ substantially from country to country and 
may conflict with corresponding U.S. laws and regulations;  

the far-reaching anti-bribery and anti-corruption legislation in the U.K., including the U.K. Bribery Act 2010, and elsewhere and 
escalation of investigations and prosecutions pursuant to such laws;

compliance with complex import and export control laws;

restrictions on direct investments by foreign entities and trade restrictions; and 

changes in tax laws and tariffs.

In addition, our international operations are subject to regulation under U.S. law. For example, the Foreign Corrupt Practices Act (“FCPA”) 

prohibits U.S. companies and their representatives from paying, offering to pay, promising to pay or authorizing the payment of anything of value to any 
foreign government official, government staff member, political party or political candidate for the purpose of obtaining or retaining business or to 
otherwise obtain favorable treatment or influence a person working in an official capacity. In many countries, the healthcare professionals we regularly 
interact with may meet the FCPA's definition of a foreign government official. Failure to comply with domestic or foreign laws could result in various 
adverse consequences, including: possible delay in approval or refusal to approve a product, recalls, seizures or withdrawal of an approved product from 
the market, disruption in the supply or availability of our products or suspension of export or import privileges, the imposition of civil or criminal 
sanctions, the prosecution of executives overseeing our international operations and damage to our reputation. Any significant impairment of our ability to 
sell products outside of the U.S. could adversely impact our business and financial results.

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

Our results of operations could be harmed by general conditions in the global economy and in the global financial markets. A severe or 

prolonged economic downturn could result in a variety of risks to our business, including weakened demand for our product candidates and our ability to 
raise additional capital when needed on acceptable terms, if at all. A weak or declining economy could strain our manufacturers, possibly resulting in 
manufacturing disruption, or cause delays in payments for our services by third-party payors or our future collaborators. Any of the foregoing could harm 
our business and we cannot anticipate all of the ways in which the current economic climate and financial market conditions could harm our business.

Additionally, in June 2016, a majority of United Kingdom (“UK”) voters voted for the UK to exit the EU (Brexit) and, on January 31, 2020, the 
UK’s withdrawal became effective. A transition period applied until the end of 2020 during which the pre-Brexit legal regime continued to apply. Existing 
EU Treaties, EU free movement rights and the general principles of EU law now no longer apply in relation to the UK. EU regulations only continue to 
apply in UK domestic law (by virtue of the European Union Withdrawal Act of 2018) to the extent that they are not modified or revoked by regulations 
under that Act. The EU and the UK negotiating teams have agreed the terms of a detailed post-Brexit Trade and Cooperation Agreement which was applied 
provisionally as of January 1, 2021 and entered into force on May 1, 2021. The economic effects of Brexit will depend the implementation of this Trade 
and Cooperation Agreement. Brexit could adversely affect European and worldwide economic or market conditions and could contribute to instability in 
global financial markets. Brexit is likely to lead to legal uncertainty and potentially divergent national laws and regulations as the UK determines which EU 
laws to replace or replicate. We may face new regulatory costs and challenges as a result of Brexit that could have a material adverse effect on our 
operations. For example, as of January 1, 2021, the United Kingdom lost the benefits of global trade agreements negotiated by the EU on behalf of its 
members, which may result in increased trade barriers that could make our doing business in areas that are subject to such global trade agreements more 
difficult. Any of these effects of Brexit, and any other effects we cannot anticipate, could adversely affect our business, business opportunities, results of 
operations, financial condition and cash flows.

Moreover, the COVID-19 pandemic is impacting the global economy, and the U.S. economy in particular, with the potential for any economic 

downturn to be severe and prolonged.  A severe or prolonged economic downturn as a result of the COVID-19 pandemic could result in a variety of risks to 
our business, including disruptions in the financial markets, which could adversely impact our ability to raise additional capital when needed or on 
acceptable terms, if at all.

We rely significantly on information technology and any failure, inadequacy, interruption or security lapse of that technology, including any 

cyber security incidents, could harm our ability to operate our business effectively.

In the ordinary course of our business, we collect and store sensitive data, including intellectual property, our proprietary business information 

and that of our suppliers, as well as personally identifiable information of the patients using our commercially approved products, clinical trial participants 
and employees. Similarly, our third-party providers possess certain of our sensitive data. 

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The secure maintenance of this information is critical to our operations and business strategy. Our ongoing operating activities also depend on functioning 
computer systems. Despite our security measures, our information technology and infrastructure are subject to attacks or breaches. Any such breach could 
result in a material compromise of our networks, and the information stored there could be accessed, publicly disclosed, lost, stolen, or rendered, 
permanently or temporarily, inaccessible. Furthermore, we may not promptly discover a system intrusion. Attacks could have a material impact on our 
business, operations or financial results. Any such access, disclosure or other loss of information, including our data being breached at third party 
providers, could result in legal claims or proceedings, liability under laws that protect the privacy of personal information, disrupt our operations and 
damage our reputation, which could adversely affect our business. We also may need to pay “ransomware” to re-access our systems.  

In addition, privacy and data protection laws may be interpreted and applied differently from country to country and may create inconsistent or 
conflicting requirements, which increase the costs incurred by us in complying with such laws. The European Union’s GDPR, which greatly increases the 
jurisdictional reach of European Union law and became effective in May 2018, adds a broad array of requirements for handling personal data including the 
public disclosure of significant data breaches, and imposes substantial penalties for non-compliance of up to the greater of €20 million or 4% of global 
annual revenue for the preceding financial year. Our efforts to comply with GDPR and other privacy and data protection laws imposes significant costs and 
challenges that are likely to increase over time, and we are exposed to substantial penalties or litigation related to violations of existing or future data 
privacy laws and regulations.

Additionally, the CCPA, which became effective January 1, 2020, substantially expands privacy obligations of many businesses. The CCPA 

requires new disclosures to California consumers, imposes new rules for collecting or using information about minors, and affords consumers new abilities, 
such as the right to know whether the data is sold or disclosed and to whom, the right to request that a company delete personal information collected, the 
right to opt-out of the sale of personal information and the right to non-discrimination in terms of price or service when a consumer exercises a privacy 
right. Failure to comply with these regulations is subject to civil sanctions, including fines and penalties. The CCPA provides for civil penalties for 
violations, as well as a private right of action for data breaches that is expected to increase data breach litigation. Moreover, a newly passed ballot initiative, 
the California Privacy Rights Act (“CPRA”), which will become operational in 2023, expands on the CCPA, creating new consumer rights and protections, 
including the right to correct personal information, the right to opt out of the use of personal information in automated decision making, the right to opt out 
of “sharing” consumer’s personal information for cross-context behavioral advertising, and the right to restrict use of and disclosure of sensitive personal 
information, including geolocation data to third parties. We will need to evaluate and potentially update our privacy program to seek to comply with the 
CPRA and will incur additional costs and expenses in our effort to comply.

We may incur substantial costs in connection with litigation and other disputes.

In the ordinary course of business we may, and in some cases have, become involved in lawsuits and other disputes such as securities claims, 
intellectual property challenges, including interferences declared by the USPTO, and employee matters. It is possible that we may not prevail in claims 
made against us in such disputes even after expending significant amounts of money and company resources in defending our positions in such lawsuits 
and disputes. The outcome of such lawsuits and disputes is inherently uncertain and may have a negative impact on our business, financial condition and 
results of operations.

The increasing use of social media platforms presents new risks and challenges.

Social media is increasingly being used to communicate about our products, technologies and programs, and the diseases our product and 

product candidates are designed to treat. Social media practices in the biopharmaceutical industry continue to evolve and regulations relating to such use 
are not always clear. This evolution creates uncertainty and risk of noncompliance with regulations applicable to our business. For example, patients may 
use social media channels to comment on the effectiveness of a product or to report an alleged adverse event. When such disclosures occur, there is a risk 
that we fail to monitor and comply with applicable adverse event reporting obligations or we may not be able to defend ourselves or the public's legitimate 
interests in the face of the political and market pressures generated by social media due to restrictions on what we may say about our product and/or 
product candidates. There is also a risk of inappropriate disclosure of sensitive information or negative or inaccurate posts or comments about us on any 
social networking website. If any of these events were to occur or we otherwise fail to comply with applicable regulations, we could incur liability, face 
overly restrictive regulatory actions or incur other harm to our business.

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We or the third parties upon whom we depend may be adversely affected by natural disasters and/or terrorism attacks, and our business 

continuity and disaster recovery plans may not adequately protect us from a serious disaster.

Natural disasters could severely disrupt our operations, and have a material adverse effect on our business, results of operations, financial 

condition and prospects. If a natural disaster, power outage, terrorism attack or other event occurred that prevented us from using all or a significant portion 
of our office, manufacturing and/or lab spaces, that damaged critical infrastructure, such as the manufacturing facilities of our third-party contract 
manufacturers, or that otherwise disrupted operations, it may be difficult or, in certain cases, impossible for us to continue our business for a substantial 
period of time. 

The disaster recovery and business continuity plans we have in place may prove inadequate in the event of a serious disaster or similar event. We 
may incur substantial expenses as a result of the limited nature of our disaster recovery and business continuity plans, which could have a material adverse 
effect on our business.     

Item 1B. Unresolved Staff Comments.

None.

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Item 2. Properties.

A description of the facilities we own and/or occupy is included in the following table. We believe that our current facilities in Cambridge, 

Andover and Burlington, Massachusetts and Columbus, Ohio are suitable and will provide sufficient capacity to meet the projected needs of our business 
for the next 12 months. Except as noted below, all of our properties are currently being used in the operation of our business.

Location of Property
215 First Street, Cambridge, MA
100 Federal Street, Andover, MA
300 Federal Street, Andover, MA
55 Network Drive, Burlington, MA
5200 Blazer Parkway, Dublin, OH
2nd and 3rd Floor
3435 Stelzer Road, Columbus, OH
701 West Main Street, Suite 102, Durham, 
NC

Item 3. Legal Proceedings.

Square
Footage

Lease Expiration
Date

Purpose

170,929    
65,589    
23,102    
44,740    
45,200    

September 2025
  Laboratory and office space
N/A- facility is owned   Laboratory and office space
December 2023
January 2022
December 2022 and 
2023, respectively
June 2026

  Office space
  Laboratory and office space
  Laboratory and office space

  Laboratory and office space
  Laboratory and office space

77,679    
4,346     March 2024

Other Information
  Corporate headquarters
  Primarily laboratory space
  Office space
  Primarily laboratory space
  Primarily laboratory space

  Primarily laboratory space
  Primarily laboratory space

For material legal proceedings, please read Note 21, Commitments and Contingencies - Litigation to our consolidated financial statements 

included in this Annual Report.

Item 4. Mine Safety Disclosures.

Not applicable.

-70-

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

Market Information

Our common stock is quoted on the NASDAQ Global Select Market under the same symbol “SRPT”.

PART II

Holders

As of February 24, 2022, we had 169 stockholders of record of our common stock.

Dividends

We did not declare or pay cash dividends on our common stock in 2021, 2020 or 2019. We currently expect to retain future earnings, if any, to 

finance the operation and expansion of our business, and we do not anticipate paying any cash dividends in the foreseeable future. Any future 
determination related to our dividend policy will be made at the discretion of our board of directors.

Performance Graph

The following graph compares the performance of our Common Stock for the periods indicated with the performance of the NASDAQ 
Composite Index, NASDAQ Biotechnology Index and the NYSE ARCA Biotechnology Index. This graph assumes an investment of $100 after the market 
closed December 30, 2016 in each of our common stock, the NASDAQ Composite Index, NASDAQ Biotechnology Index and the NYSE ARCA 
Biotechnology Index, and assumes reinvestment of dividends, if any. The stock price performance shown on the graph below is not necessarily indicative 
of future stock price performance. This graph is not “soliciting material,” is not deemed “filed” with the SEC and is not to be incorporated by reference into 
any of our filings under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, whether made before or after the date 
hereof and irrespective of any general incorporation language in any such filing.

Recent Sales of Unregistered Securities.

None.

Purchases of Equity Securities by the Issuer and Affiliated Purchasers.

None.

Item 6. Reserved

-71-

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

The purpose of Management's Discussion and Analysis of Financial Condition and Results of Operations is to provide an understanding of the 

financial condition, changes in financial condition and results of operations of Sarepta Therapeutics, Inc. The following discussion and analysis of our 
financial condition and results of operations should be read in conjunction with our consolidated financial statements and related notes included elsewhere 
in this Annual Report on Form 10-K. This discussion contains forward-looking statements that involve risks and uncertainties. Please review our legend 
titled “Forward-Looking Information” at the beginning of this Annual Report on Form 10-K which is incorporated herein by reference. Our actual results 
could differ materially from those discussed below. Factors that could cause or contribute to such differences include, but are not limited to, those 
identified below, and those discussed in the section titled “Risk Factors” included elsewhere in this Annual Report on Form 10-K. Throughout this 
discussion, unless the context specifies or implies otherwise, the terms “Sarepta”, “we”, “us” and “our” refer to Sarepta Therapeutics, Inc. and its 
subsidiaries. 

This section discusses 2021 and 2020 items and year-to-year comparisons between 2021 and 2020. Discussions of 2019 items and year-to-year 
comparisons between 2020 and 2019 have been excluded from this Form 10-K and can be found in “Management’s Discussion and Analysis of Financial 
Condition and Results of Operations” in Part II, Item 7 of our Annual Report on Form 10-K for the fiscal year ended December 31, 2020.

Overview

We are a commercial-stage biopharmaceutical company focused on helping patients through the discovery and development of unique RNA-

targeted therapeutics, gene therapy and other genetic therapeutic modalities for the treatment of rare diseases. Applying our proprietary, highly-
differentiated and innovative technologies, and through collaborations with our strategic partners, we are developing potential therapeutic candidates for a 
broad range of diseases and disorders, including Duchenne, LGMDs, and other CNS related disorders. 

We commercialize three products, all of which were granted accelerated approval by the FDA: 

•

•

•

EXONDYS 51 (eteplirsen) Injection (“EXONDYS 51”), approved by the FDA on September 19, 2016, is indicated for the treatment of 
Duchenne in patients who have a confirmed mutation of the dystrophin gene that is amenable to exon 51 skipping. EXONDYS 51 uses 
our phosphorodiamidate morpholino oligomer (“PMO”) chemistry and exon-skipping technology to skip exon 51 of the dystrophin gene. 

VYONDYS 53 (golodirsen) Injection (“VYONDYS 53”), approved by the FDA on December 12, 2019, is indicated for the treatment of 
Duchenne in patients who have a confirmed mutation of the dystrophin gene that is amenable to exon 53 skipping. VYONDYS 53 uses 
our PMO chemistry and exon-skipping technology to skip exon 53 of the dystrophin gene. 

AMONDYS 45 (casimersen) Injection (“AMONDYS 45”), approved by the FDA on February 25, 2021, is indicated for the treatment of 
Duchenne in patients who have a confirmed mutation of the dystrophin gene that is amenable to exon 45 skipping. AMONDYS 45 uses 
our PMO chemistry and exon-skipping technology to skip exon 45 of the dystrophin gene. 

We are in the process of conducting various EXONDYS 51, VYONDYS 53 and AMONDYS 45 clinical trials, including studies that are required 

to comply with our post-marketing FDA requirements/commitments to verify and describe the clinical benefit of these products.

A summary description of our key product candidates, including those in collaboration with our strategic partners, is as follows:

•

•

SRP-5051 uses our next-generation chemistry platform, PPMO, and our exon-skipping technology to skip exon 51 of the dystrophin gene. 
SRP-5051, a peptide conjugated PMO, is designed to bind to exon 51 of dystrophin pre-mRNA, resulting in exclusion of this exon during 
mRNA processing in patients with genetic mutations that are amenable to exon 51 skipping. Exon skipping is intended to promote the 
production of an internally truncated but functional dystrophin protein. In the fourth quarter of 2017, we commenced a first-in-human, 
single ascending dose, study for the treatment of Duchenne in patients who are amenable to exon 51 skipping. In 2019, we commenced 
Study 5051-201.   In December 2020, we announced an interim analysis on clinical results from the 10 mg/kg and 20 mg/kg dose cohorts 
of Part A of Study 5051-201. In May 2021, we announced results from the 30 mg/kg cohort of Part A of Study 5051-201. We initiated 
Part B of Study 5051-201 in the fourth quarter of 2021 and are currently enrolling patients.

SRP-9001 (Duchenne, micro-dystrophin gene therapy program), aims to express micro-dystrophin – a smaller but still functional version 
of dystrophin. A unique, engineered micro-dystrophin is used because naturally-occurring dystrophin is too large to fit in an AAV vector. 
In the fourth quarter of 2017, an IND application for the micro-dystrophin gene therapy program was cleared by the FDA, and a Phase 
1/2a clinical trial in individuals with Duchenne 

-72-

 
 
was initiated (Study 101). In October 2018, Nationwide presented results from the Phase 1/2a clinical trial in four individuals with 
Duchenne enrolled in the trial. In March 2019, we presented nine-month functional and creatine kinase (“CK”) data from baseline from 
these four individuals, and twelve-month CK data from baseline from one of these individuals. In June 2020, we announced that 
functional, safety and tolerability data at twelve-months from baseline from these four individuals had been published in JAMA 
Neurology. In September 2020, we presented functional, safety and tolerability data at 24 months from these four individuals. In the 
fourth quarter of 2018, we commenced a randomized, double-blind, placebo-controlled trial of SRP-9001 with the goal to establish the 
functional benefits of micro-dystrophin expressions (Study 102). In January 2021, we released top-line results for Part 1 of Study 102 (the 
48-week assessment of 41 participants) and interim expression results from Part 2 of Study 102 (the crossover phase).  We announced 
topline results for Part 2 of Study 102 in January 2022. We have completed dosing in the first cohort in Study 103, an open-label study 
evaluating the safety and expression of commercially representative material for SRP-9001. In May 2021, we announced 12-week 
expression and safety results from the first 11 participants enrolled in Study 103. In October 2021, we announced functional data from the 
first 11 patients and tolerability data for all 32 patients enrolled in Study 103. We also initiated our pivotal trial (Study 301) in October 
2021 and are currently enrolling patients. We expect to announce additional data for SRP-9001 in 2022.

•

SRP-9003 (LGMD, gene therapy program). We are developing gene therapy programs for various forms of LGMDs. The most advanced 
of our LGMD product candidates, SRP-9003, is designed to transfer a gene that codes for and restores beta-sarcoglycan protein with the 
goal of restoring the dystrophin associated protein complex. It utilizes the AAVrh.74 vector system, the same vector used in the micro-
dystrophin gene therapy program we are developing with Nationwide. A Phase 1/2a trial of SRP-9003 was commenced in the fourth 
quarter of 2018. In February 2019, we announced positive two-month biopsy data from the first three-patient low-dose cohort dosed in the 
SRP-9003 trial, and in October 2019, we announced positive nine-month functional data from these three patients. We have recently 
dosed one additional cohort of three patients at a higher dose per the study protocol. In June 2020, we announced safety and expression 
results from three clinical trial participants in the high-dose cohort measured at 60 days, and one-year functional data from three clinical 
trial participants in the low-dose cohort. In September 2020, we announced six-month functional data from three clinical trial participants 
in the high-dose cohort, and eighteen-month functional data from three clinical trial participants in the low-dose cohort. We expect to 
complete GMP runs for SRP-9003 in 2022. We also plan to meet with the FDA in 2022 to discuss our pivotal trial.

Our pipeline includes more than 40 programs in various stages of pre-clinical and clinical development, reflecting our multifaceted approach and 

expertise in precision genetic medicine to make a profound difference in the lives of patients suffering from rare diseases. 

We have developed proprietary state-of-the-art CMC and manufacturing capabilities that allow synthesis and purification of our products and 
product candidates to support both clinical development as well as commercialization. Our current main focus in manufacturing is to continue scaling up 
production of our PMO-based therapies and optimizing manufacturing for PPMO and gene therapy-based product candidates. We have entered into certain 
manufacturing and supply arrangements with third-party suppliers and will utilize these capabilities to support production of certain of our products and 
product candidates and their components. In 2017, we opened a facility in Andover, Massachusetts, which significantly enhanced our research and 
development manufacturing capabilities. However, we currently do not have internal large scale GMP manufacturing capabilities to produce our products 
and product candidates for commercial and/or clinical use.

The likelihood of our long-term success must be considered in light of the expenses, difficulties and delays frequently encountered in the 

development and commercialization of new pharmaceutical products, competitive factors in the marketplace and the complex regulatory environment in 
which we operate. We may never achieve significant revenue or profitable operations.

COVID-19 Pandemic

The COVID-19 pandemic has presented a substantial public health and economic challenge around the world. Our business operations and 

financial condition and results have been impacted to varying degrees, and we expect the impact will continue in future quarters.

We are continuing to assess the potential impact of the COVID-19 pandemic on our business, operations and financial condition and results. 
Despite careful tracking and planning, however, we are unable to accurately predict the extent of the impact of the pandemic on our business, results of 
operations and financial condition due to the uncertainty of future developments. The full extent to which the COVID-19 pandemic will directly or 
indirectly impact our business, results of operations and financial condition will depend on future developments that are highly uncertain and cannot be 
accurately predicted, including new information that may emerge concerning COVID-19, the actions taken to contain it or treat its impact and the economic 
impact on local, regional, national and international markets. For additional information on the various risks posed by the COVID-19 pandemic, refer to 
Part I, Item 1A. Risk Factors of this Annual Report on Form 10-K. 

-73-

 
Critical Accounting Policies and Estimates

The discussion and analysis of our financial condition and results of operations is based upon our consolidated financial statements included 

elsewhere in this Annual Report on Form 10-K. The preparation of our consolidated financial statements in accordance with accounting principles 
generally accepted in the U.S. requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and 
related disclosure of contingent assets and liabilities for the periods presented. Some of these judgments can be subjective and complex, and, consequently, 
actual results may differ from these estimates. We believe that the estimates and judgments upon which we rely are reasonable based upon historical 
experience and information available to us at the time that we make these estimates and judgments. To the extent there are material differences between 
these estimates and actual results, our consolidated financial statements will be affected. Although we believe that our judgments and estimates are 
appropriate, actual results may differ from these estimates. We believe the following accounting policies to be most critical to the judgments and estimates 
used in the preparation of our consolidated financial statements:

•

•

inventory; and

income tax.

Inventory Valuation

Inventories are stated at the lower of cost and net realizable value with cost determined on a first-in, first-out basis. We capitalize inventory costs 
associated with products following regulatory approval when future commercialization is considered probable and the future economic benefit is expected 
to be realized. EXONDYS 51, VYONDYS 53 and AMONDYS 45 inventory that may be used in clinical development programs is charged to research and 
development expense when the product enters the research and development process and no longer can be used for commercial purposes. 

We periodically analyze our inventories for excess amounts or obsolescence and write down obsolete or otherwise unmarketable inventory to its 
estimated net realizable value based on assumptions about expected future demand and market conditions. Additionally, though our products are subject to 
strict quality control and monitoring, which we perform throughout the manufacturing processes, certain batches or units of product may not meet quality 
specifications. Expense incurred related to excess inventory, obsolete inventory, or inventories that do not meet our quality specifications are recorded as a 
component of cost of sales in the consolidated statement of operations.

Income Tax

We recognize the effect of income tax positions only if those positions are more likely than not of being sustained upon an examination. The 

calculation of our tax liabilities resulting from uncertain tax positions can involve significant judgment. Further, the calculation may involve the application 
of complex tax regulations in a foreign jurisdiction. Any significant impact as a result of changes in underlying facts, law, tax rates, tax audit, or review 
could lead to adjustments to our income tax expense, our effective tax rate, and/or our cash flow. Although we believe that we have adequately provided for 
tax liabilities resulting from uncertain tax positions, the actual amounts paid, if any, could have a material impact on our results of operations. Interest and 
penalties associated with uncertain tax positions are classified as a component of income tax expense.

Please read Note 2, Summary of Significant Accounting Policies and Recent Accounting Pronouncements to the consolidated financial statements 

included elsewhere in this Annual Report on Form 10-K for a further discussion of our critical accounting policies and estimates.

-74-

 
The following table sets forth selected consolidated statements of operations data for each of the periods indicated:

For the Year Ended December 31,
2020

2021

(in thousands, except per 
share amounts)

Change

  Change

$

  %

  $

  $

612,401  
89,486  
701,887  

  $

455,865  
84,234  
540,099  

156,536  
5,252  
161,788  

34 %
6 %
30 %

97,049  
771,182  
282,660  
10,000  
706  
1,161,597  
(459,710 )    

102,000  
7,200  
(68,438 )    
40,762  

(418,948 )    
(168 )    
(418,780 )   $

63,382  
722,343  
317,875  
—  
662  
1,104,262  
(564,163 )    

108,069  
(45,000 )    
(51,971 )    
11,098  

(553,065 )    
1,063  
(554,128 )   $

33,667  
48,839  
(35,215 )    
10,000  
44  
57,335  
104,453  

(6,069 )    
52,200  
(16,467 )    
29,664  

53 %
7 %
(11 )%

NM*

7 %
5 %
(19 )%

(6 )%
(116 )%
32 %

NM*

134,117  

(1,231 )    

135,348  

(24 )%
(116 )%
(24 )%

(5.15 )   $

(7.11 )   $

1.96  

(28 )%

Revenues:

Products, net
Collaboration and other

Total revenues

Cost and expenses:

Cost of sales (excluding amortization of in-licensed
   rights)
Research and development
Selling, general and administrative
Settlement and license charges
Amortization of in-licensed rights

Total cost and expenses
Operating loss
Other income:

Gain from sale of Priority Review Voucher
Gain (loss) on contingent consideration, net
Other expense, net

Total other income

Loss before income tax (benefit) expense

Income tax (benefit) expense

Net loss

Net loss per share — basic and diluted

  $

  $

* NM: not meaningful

Revenues

The following table summarizes the components of our net product revenues for the periods indicated:

EXONDYS 51
VYONDYS 53
AMONDYS 45

Products, net

For the Year Ended December 31,
2020

2021

  $

  $

(in thousands)

454,361  
89,511  
68,529  
612,401  

  $

  $

422,007  
33,858  
—  
455,865  

  $

  $

Change

$

  Change

%

32,354      
55,653      
68,529    
156,536      

8 %
164 %

NM*

34 %

Net product revenues for our products for 2021 increased by $156.5 million compared with 2020. The increase primarily reflects increasing 

demand for our products in the U.S. and the commercial launch of AMONDYS 45. 

Collaboration and other revenues primarily relate to our collaboration arrangement with Roche. For the years ended December 31, 2021 and 

December 31, 2020, we recognized $89.5 million and $84.2 million of collaboration and other revenues, respectively. For more information, please read 
Note 3, License and Collaboration Agreements. 

Cost of sales (excluding amortization of in-licensed rights)

Our cost of sales (excluding amortization of in-licensed rights) consists of royalty payments primarily to BioMarin and UWA and inventory costs 
that relate to sales of our products. Prior to receiving regulatory approval for EXONDYS 51, VYONDYS 53 and AMONDYS 45 by the FDA in September 
2016, December 2019 and February 2021, respectively, we expensed such manufacturing 

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and material costs as research and development expenses. For AMONDYS 45 sold in 2021 and VYONDYS 53 sold in 2020, the majority of related 
manufacturing costs incurred had previously been expensed as research and development expenses, as such costs were incurred prior to the FDA approval 
of the products. For VYONDYS sold in 2021 and EXONDYS 51 sold in 2021 and 2020, only part of the related manufacturing costs incurred had 
previously been expensed as research and development expenses. If product related costs had not previously been expensed as research and development 
expenses prior to FDA approval, the incremental inventory costs related to our products sold in 2021 and 2020 would have been approximately $22.0 
million and $25.9 million, respectively.  

The following table summarizes the components of our cost of sales for the periods indicated:

Inventory costs related to products sold
Royalty payments

Total cost of sales

  $

  $

For the Year Ended December 31,
2020

2021

(in thousands)

56,720  
40,329  
97,049  

  $

  $

Change

$

  Change

%

22,397      
11,270      
33,667      

65 %
39 %
53 %

34,323  
29,059  
63,382  

  $

  $

The cost of sales for 2021 increased $33.7 million, or 53%, compared with 2020. The change primarily reflects increasing demand for our 

products.

Research and development expenses

Research and development expenses consist of costs associated with research activities as well as costs associated with our product development 

efforts, conducting pre-clinical trials, clinical trials and manufacturing activities. Direct research and development expenses associated with our programs 
include clinical trial site costs, clinical manufacturing costs, costs incurred for consultants, up-front fees and milestones paid to third parties in connection 
with technologies that have not reached technological feasibility and do not have an alternative future use, and other external services, such as data 
management and statistical analysis support, and materials and supplies used in support of clinical programs. Indirect costs of our clinical programs include 
salaries, stock-based compensation and allocation of our facility- and technology-related costs.

Research and development expenses represent a substantial percentage of our total operating expenses. We do not maintain or evaluate and, 

therefore, do not allocate internal research and development costs on a project-by-project basis. As a result, a significant portion of our research and 
development expenses are not tracked on a project-by-project basis, as the costs may benefit multiple projects.

The following table summarizes our research and development expenses by project for each of the periods indicated:

Micro-dystrophin
Other gene therapies
Up-front, milestone, and other expenses
Eteplirsen (exon 51)
PPMO platform
Casimersen (exon 45)
Golodirsen (exon 53)
Collaboration cost-sharing
Other projects
Internal research and development expenses
Roche collaboration reimbursement
Total research and development expenses

* NM: not meaningful

For the Year Ended December 31,

2021

2020

(in thousands)

  $

320,214  
102,036  
40,267  
36,464  
35,652  
34,443  
28,898  
12,425  
17,302  
233,704  
(90,223 )    
  $
771,182  

  $

289,877  
67,650  
47,280  
32,371  
31,633  
58,179  
36,650  
13,105  
4,566  
206,912  
(65,880 )    
  $
722,343  

  $

  $

-76-

Change
$

  Change
  %

30,337  
34,386  
(7,013 )    
4,093  
4,019  
(23,736 )    
(7,752 )    
(680 )    

10 %
51 %
(15 )%
13 %
13 %
(41 )%
(21 )%
(5 )%

  NM*

12,736  
26,792  
(24,343 )    
48,839  

13 %
37 %
7 %

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
   
   
   
 
 
   
   
 
 
   
   
   
 
 
   
   
   
 
 
   
   
 
 
   
   
 
 
   
   
 
 
   
   
 
 
 
   
   
   
 
 
   
The following table summarizes our research and development expenses by category for each of the periods indicated:

Manufacturing expenses
Compensation and other personnel expenses
Clinical trial expenses
Facility- and technology-related expenses
Stock-based compensation
Up-front, milestone, and other expenses
Pre-clinical expenses
Professional services
Collaboration cost-sharing
Research and other
Roche collaboration reimbursement
Total research and development expenses

For the Year Ended December 31,

2021

2020

(in thousands)

384,700  
115,394  
104,732  
70,597  
50,526  
40,267  
21,410  
13,900  
12,425  
47,454  
(90,223 )
771,182  

  $

  $

  $

366,867  
107,149  
95,367  
55,372  
41,671  
47,280  
10,139  
18,325  
13,105  
32,948  
(65,880 )    
  $
722,343  

  $

  $

Change

$

  Change
  %

17,833  
8,245  
9,365  
15,225  
8,855  
(7,013 )    
11,271  
(4,425 )    
(680 )    

14,506  
(24,343 )    
48,839  

5 %
8 %
10 %
27 %
21 %
(15 )%
111 %
(24 )%
(5 )%
44 %
37 %
7 %

Research and development expenses for 2021 increased by $48.8 million, or 7%, compared with 2020. The increase was primarily driven by the 

following:

•

•

•

•

•

•

•

•

•

•

•

$17.8 million increase in manufacturing expenses primarily due to our accelerated amortization of nonrefundable advance payments due 
to capacity changes associated with the execution of the Third Amendment to our manufacturing and supply agreement with Thermo; 

$8.2 million increase in compensation and other personnel expenses primarily due to changes in headcount; 

$9.4 million increase in clinical trial expenses primarily due to increased patient enrollment for our ESSENCE and MOMENTUM 
programs as well as certain start-up activities and patient enrollment for our SRP-9001 micro-dystrophin program including for our 
EMBARK program; 

$15.2 million increase in facility- and technology-related expenses primarily due to our continuing expansion efforts;

$8.9 million increase in stock-based compensation expense primarily due to changes in headcount and stock price;

$7.0 million decrease in up-front, milestone and other expenses, primarily due to a $28.7 million increase of an accrued sublicense fee to 
Nationwide and $11.6 million of expense incurred as a result of up-front and milestone payments related to certain research and license 
agreements during 2021. This was offset primarily by $9.3 million of milestone expense related to payments accrued to an academic 
institution and $38.0 million of up-front payments as a result of the execution of certain research, option and license agreements during 
2020; 

$11.3 million increase in pre-clinical expenses primarily due to an increase of toxicology studies in our PPMO platforms;

$4.4 million decrease in professional service expenses primarily due to a decrease in reliance on third-party research and development 
contractors;

$0.7 million decrease in collaboration cost sharing expenses with Lysogene S.A. (“Lysogene”) on its MPS IIIA drug candidate offset by 
an increase in cost sharing expenses with Genethon on its micro-dystrophin drug candidate;

$14.5 million increase in research and other expenses primarily driven by an increase in sponsored research with academic institutions 
during 2021; and 

$24.3 million increase in the offset to expense associated with a collaboration reimbursement from Roche primarily due to continuing 
development of our SRP-9001 micro-dystrophin gene therapy.

Selling, general and administrative expenses  

Selling, general and administrative expenses consist of salaries, benefits, stock-based compensation and related costs for personnel in our 

executive, finance, legal, information technology, business development, human resources, commercial and other 

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general and administrative functions. Other general and administrative expenses include an allocation of our facility- and technology-related costs and 
professional fees for legal, consulting and accounting services.

The following table summarizes our selling, general and administrative expenses by category for each of the periods indicated:

Compensation and other personnel expenses
Professional services
Stock-based compensation
Facility- and technology-related expenses
Other
Roche collaboration reimbursement

Total selling, general and administrative expenses

For the Year Ended December 31,

2021

2020

(in thousands)

103,528  
73,605  
63,417  
31,113  
11,251  
(254 )
282,660  

  $

  $

  $

105,233  
106,571  
66,399  
28,615  
11,661  

(604 )    
  $

317,875  

  $

  $

Change

$

  Change
  %

(1,705 )    
(32,966 )    
(2,982 )    
2,498  
(410 )    
350  
(35,215 )    

(2 )%
(31 )%
(4 )%
9 %
(4 )%
(58 )%
(11 )%

Selling, general and administrative expenses for 2021 decreased by $35.2 million, or 11%, compared with 2020. This was primarily driven by the 

following:

•

•

•

•

$1.7 million decrease in compensation and other personnel expenses primarily due to changes in headcount; 

$33.0 million decrease in professional service expenses primarily due to a decrease in reliance on third-party selling, general and 
administrative contractors, as well as a transaction fee for the Roche transaction incurred during 2020, with no similar activity incurred 
during 2021;

$3.0 million decrease in stock-based compensation expense primarily due to changes in headcount and stock price; and

$2.5 million increase in facility- and technology-related expenses primarily due to our continuing expansion efforts.

Settlement and license charges

In February 2021, we recognized a $10.0 million settlement charge related to contingent settlement payments to BioMarin as a result of the 

approval of AMONDYS 45 in the U.S. This was a result of a settlement and license agreement with BioMarin executed in July 2017. This amount, which 
was expensed to operations as incurred, is separately presented as settlement and license charges in the Company's consolidated statement of operations and 
comprehensive loss for the year ended December 31, 2021. There was no such expense recognized during the same period of 2020. 

Amortization of in-licensed rights

Amortization of in-licensed rights relates to the agreements we entered into with BioMarin and UWA in July 2017 and April 2013, respectively. 

Each in-licensed right is being amortized on a straight-line basis over the remaining life of the patent from the first commercial sale of each product. For 
both the years ended December 31, 2021 and 2020, we recorded amortization of in-licensed rights of approximately $0.7 million. 

Gain from sale of Priority Review Voucher 

In February 2021, we entered into an agreement to sell the PRV (the "AMONDYS 45 PRV") we received from the FDA in connection with the 
approval of AMONDYS 45. Following the termination of the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, 
as amended, in April 2021, we completed our sale of the AMONDYS 45 PRV and received proceeds of $102.0 million, with no commission costs, which 
was recorded as a gain from sale of the PRV as it did not have a carrying value at the time of the sale.

In February 2020, we entered into an agreement to sell the PRV (the "VYONDYS 53 PRV") we received from the FDA in connection with the 
approval of VYONDYS 53. Following the early termination of the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 
1976, as amended, in March 2020, we completed our sale of the VYONDYS 53 PRV and received proceeds of $108.1 million, net of commission, which 
was recorded as a gain from sale of the PRV as it did not have a carrying value at the time of the sale. 

Gain (loss) on contingent consideration, net

The gain (loss) on contingent consideration, net, relates to the fair value adjustment of the Company’s contingent consideration derivative 

liability related to regulatory-related contingent payments to Myonexus selling shareholders as well as to two 

-78-

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
   
   
 
 
   
   
   
 
 
   
   
 
 
   
   
 
academic institutions under separate license agreements that meet the definition of a derivative. For the years ended December 31, 2021 and 2020, we 
recognized a $7.2 million net gain and $45.0 million net loss, respectively, to adjust the fair value of the contingent consideration liabilities. For further 
information on our contingent considerations, please read Note 5, Fair Value Measurements. 

Other expense, net

Other expense, net, primarily consists of interest income on our cash, cash equivalents and investments, interest expense on our debt facilities, 
amortization of investment discount, and unrealized gain or loss from our investment in our strategic investments. Our cash equivalents and investments 
consist of money market funds, government and government agency debt securities, and certificates of deposit. Interest expense includes interest accrued 
on our convertible notes and term loan.

Other expense, net, for 2021 increased by approximately $16.5 million compared with 2020. The increase primarily reflects an increase in 

interest expense incurred on our term loan debt facilities due to an increase in the outstanding balance as well as an impairment loss related to a strategic 
investment, partially offset by a decrease of $20.8 million in non-cash interest expense on our convertible debt in 2021 as compared to 2020. 

Income tax (benefit) expense

Income tax benefit for 2021 was approximately $0.2 million and income tax expense for 2020 was $1.1 million. Income tax (benefit) expense for 

all periods presented relates to state and foreign income taxes.

Liquidity and Capital Resources

The following table summarizes our financial condition for each of the periods indicated:

Financial assets:

Cash and cash equivalents
Short-term investments
Restricted cash and investments

Total cash, cash equivalents and
   investments

Borrowings:
Term loan
Convertible debt

Total borrowings

Working capital
Current assets
Current liabilities

Total working capital

For the Year Ended December 31,

2021

2020

(in thousands)

Change

$

  Change

%

2,115,869     $
—      
9,904      

1,502,648     $
435,923      
9,315      

613,221      
(435,923 )    
589      

41 %
(100 )%
6 %

2,125,773     $

1,947,886     $

177,887      

9 %

533,203     $
563,673      
1,096,876     $

527,731     $
464,762      
992,493     $

2,604,099     $
452,733      
2,151,366     $

2,485,196     $
416,026      
2,069,170     $

5,472      
98,911      
104,383      

118,903      
36,707      
82,196      

1 %
21 %
11 %

5 %
9 %
4 %

  $

 $

  $

 $

  $

 $

For the year ended December 31, 2021, our principal sources of liquidity were primarily derived from sales of our products, our collaboration 

arrangement with Roche, net proceeds from sale of the PRV, and net proceeds from our common stock offering. For the year ended December 31, 2020, our 
principal sources of liquidity were primarily derived from our collaboration arrangement with Roche, net proceeds from draw-down of our debt facility, net 
proceeds from sale of the PRV and product sales of our products. Our principal uses of cash are research and development expenses, selling, general and 
administrative expenses, investments, capital expenditures, business development transactions and other working capital requirements. The changes in our 
total borrowings primarily reflect the adoption of ASU 2020-06 as of January 1, 2021, which resulted in the convertible debt being accounted for as a 
single liability measured at its amortized cost. For more information on the adoption and impact of ASU 2020-06, please read Note 13, Indebtedness. The 
changes in our working capital primarily reflect use of cash in operating activities. While our contractual obligations, commitments and debt service 
requirements over the next several years are significant, we intend to continue to fund our short-term financing needs and working capital requirements 
from cash flows of operating activities as well as cash on hand, and such sources are anticipated to be adequate to fund working capital requirements for at 
least twelve months from the date these consolidated financial statements were issued.

Beyond 2022, our cash requirements will depend extensively on our ability to advance our research, development and commercialization 

programs. We expect to seek additional financings primarily from, but not limited to, the sale and issuance of 

-79-

 
 
 
 
 
   
     
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
   
     
     
     
 
   
   
 
 
     
     
     
 
 
   
     
     
     
 
   
 
 
     
     
     
 
 
 
 
    
    
     
 
   
 
equity and debt securities, the licensing or sale of our technologies, additional government contracts and/or funded research and development agreements. 
Our future expenditures and long-term capital requirements may be substantial and will depend on many factors, including but not limited to the following:

•

•

•

•

•

•

•

•

•

our ability to continue to generate revenues from sales of EXONDYS 51, VYONDYS 53, AMONDYS 45 and potential future products;

the timing and costs associated with our expansion efforts;

the timing and costs of building out our manufacturing capabilities;

the timing of advanced payments related to our future inventory commitments and manufacturing obligations;

the timing and costs associated with our existing lease obligations;

the timing and costs associated with our clinical trials and pre-clinical trials;

the attainment of milestones and our obligations to make milestone payments to Myonexus’s selling shareholders StrideBio, BioMarin, 
Lysogene, Lacerta Therapeutics, Inc., Nationwide, UWA and other institutions; 

repayment of outstanding debt; and

the costs of filing, prosecuting, defending and enforcing patent claims and our other intellectual property rights.

We cannot provide assurances that financing will be available when and as needed or that, if available, the financings will be on favorable or 
acceptable terms. If we are unable to obtain additional financing when and if we require, this would have a material adverse effect on our business and 
results of operations. To the extent we issue additional equity securities, our existing stockholders could experience substantial dilution.

Cash Flows

The following table summarizes our cash flow activity for each of the periods indicated: 

Cash (used in) provided by
Operating activities
Investing activities
Financing activities

Increase in cash and cash equivalents
* NM: not meaningful

Operating Activities

For the Year Ended December 31,
2020
2021

(in thousands)

Change

$

Change

%

 $

  $

(443,172 )
495,413  
561,569  
613,810  

  $

  $

107,466  
  $
(121,721 )    
682,323  
668,068  

  $

(550,638 )  
617,134  
(120,754 )    
(54,258 )    

NM*
NM*

(18 )%
(8 )%

Cash used in operating activities, which consists of our net loss adjusted for non-cash items and changes in net operating assets and liabilities, 

totaled $443.2 million in 2021. Operating activities provided $107.5 million of cash in 2020. The most significant contributor to the year-over-year change 
was the cash received in the prior year relating to the collaboration arrangement with Roche that was recorded as deferred revenue. Cash used in operating 
activities in 2021 was primarily driven by the net loss of $418.8 million, adjusted for following:

•

•

•

$113.9 million in stock-based compensation expense;

$38.0 million in depreciation and amortization expense; and

$23.8 million in other non-cash items.

These amounts were partially offset by the gain of $102.0 million recorded from the sale of the PRV. 

-80-

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
 
   
 
 
  
   
 
 
  
   
   
The net cash outflow from changes in our operating assets and liabilities was primarily driven by the following:

•

•

•

$89.2 million decrease in deferred revenue related to the collaboration with Roche;

$83.8 million increase in inventory due our continuing build-up of inventory purchased in 2021 as the demand for our products increased; 
and

$51.7 million increase in accounts receivable due to the launch of AMONDYS 45 in 2021 and an increase in demand for our products.

These amounts were partially offset by the following:

•

•

$23.3 million increase in accounts payable, accrued expenses, lease liabilities and other liabilities due to the timing and invoicing of 
payments; and

$103.2 million decrease in other assets primarily due to lower manufacturing-related deposits as a result of the accelerated amortization of 
nonrefundable advance payments due to capacity changes associated with the execution of the Third Amendment to our manufacturing 
and supply agreement with Thermo.

Cash provided by operating activities in 2020 was primarily driven by the net loss of $554.1 million, adjusted for: 

•

•

•

•

•

$108.1 million in stock-based compensation expense;

$45.0 million in loss on contingent consideration, driven by the mark-to-market adjustment of the contingent consideration liability;

$26.9 million in depreciation and amortization expense;

$25.5 million in non-cash interest expense associated with our debt facilities; and

$10.2 million in other non-cash items.

These amounts were partially offset by the gain of $108.1 million recorded from the sale of the PRV. 

The net cash inflow from changes in our operating assets and liabilities was primarily driven by the following:

•

•

$749.4 million increase in deferred revenue as a result of the collaboration with Roche; and

$42.0 million increase in accounts payable, accrued expenses, lease liabilities and other liabilities due to the timing and invoicing of 
payments.

These increases were partially offset by:

•

•

•

$166.3 million increase in other assets primarily due to greater manufacturing-related deposits and prepaids and the establishment of a 
collaboration receivable associated with the Roche agreement;

$60.6 million increase in inventory due our continuing build-up of inventory purchased in 2020 as the demand for our products increased; 
and

$10.5 million increase in accounts receivable due to increase in demand for our products.

Investing Activities

Cash provided by investing activities was $495.4 million in 2021 compared to $121.7 million of cash used in 2020. Cash provided by investing 

activities in 2021 primarily consisted of the following: 

•

•

$466.0 million of maturity and sales of available-for-sale securities; and

$102.0 million of net proceeds related to the sale of the PRV.

These amounts were partially offset by the following:

•

•

$38.5 million of purchases of property and equipment due to the continued build-out of our facilities; and

$30.0 million of purchases of available-for-sale securities.

Cash used in investing activities in 2020 primarily consisted of the following:

•

•

$1.3 billion of purchases of available-for-sale securities; and

$82.2 million of purchases of property and equipment due to the continued build-out of our facilities.

These amounts were partially offset by the following:

•

$1.2 billion of maturity and sales of available-for-sale securities; and

-81-

 
•

$108.1 million of net proceeds related to the sale of the PRV.

Financing Activities

Cash provided by financing activities was $561.6 million in 2021 compared to $682.3 million in 2020. Cash provided by financing activities in 

2021 consisted primarily of the following:

•

•

$548.5 million in proceeds from the issuance of common stock; and

$20.8 million in proceeds from exercise of options and our employee stock purchase program.

These amounts were partially offset by $7.8 million of taxes paid related to net share settlement of equity awards.

Cash provided by financing activities in 2020 primarily consisted of the following:

•

•

•

$312.1 million in proceeds from the issuance of common stock to Roche;

$291.2 million in proceeds from term loans, driven by the drawdown of our term loan; and

$84.0 million in proceeds from exercise of options and our employee stock purchase program.

These amounts were partially offset by $4.8 million of taxes paid related to net share settlement of equity awards.

Off-Balance Sheet Arrangements

During the periods presented, we did not have any relationships with unconsolidated entities or financial partnerships, such as entities often 

referred to as structured finance or special purpose entities, which would have been established for the purpose of facilitating off-balance sheet 
arrangements or for another contractually narrow or limited purpose. As such, we have no off-balance sheet arrangements as defined by Regulation S-K of 
the Securities Act of 1933.

Contractual Payment Obligations

In our continuing operations, we have entered into long-term contractual arrangements from time to time for our facilities, the provision of goods 
and services, and issuance of debt securities, among others. As of December 31, 2021, total obligations under debt, lease, and manufacturing arrangements 
were $1.3 billion, $64.2 million, and $1.2 billion, respectively. Additional information regarding our obligations under debt, lease, and manufacturing 
arrangements is provided in Note 13, Indebtedness, Note 19, Leases and Note 21, Commitments and Contingencies, respectively, to the consolidated 
financial statements contained in Item 8. Financial Statements and Supplementary Data.

Milestone Obligations

For products and product candidates that are currently in various research and development stages, we may be obligated to make up to $4.0 

billion of future development, regulatory, up-front royalty and sales milestone payments associated with our collaboration and license agreements. 
Payments under these agreements generally become due and payable upon achievement of certain development, regulatory or commercial milestones. 
Because the achievement of these milestones is not probable and payment is not required as of December 31, 2021, such contingencies have not been 
recorded in our consolidated financial statements. Amounts related to contingent milestone payments are not yet considered contractual obligations as they 
are contingent on the successful achievement of certain development, regulatory approval and commercial milestones.

Other Funding Commitments

We have several on-going clinical trials in various stages. Our most significant clinical trial expenditures are to CROs. The CRO contracts are 

generally cancellable at our option. As of December 31, 2021, we had approximately $378.5 million in cancellable future commitments based on existing 
CRO contracts.

Recent Accounting Pronouncements

Please read Note 2, Summary of Significant Accounting Policies and Recent Accounting Pronouncements to the consolidated financial statements 

included elsewhere in this Annual Report on Form 10-K.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk.

Our current investment policy is to maintain a diversified investment portfolio consisting of money market investments, commercial paper, 
government and government agency bonds and high-grade corporate bonds with maturities of 36 months or less. Our cash is deposited in and invested 
through highly rated financial institutions in the U.S. As of December 31, 2021, we had $2,125.8

-82-

 
  
 million of cash, cash equivalents and investments, comprised of $2,115.9 million of cash and cash equivalents and $9.9 million of restricted cash and 
investments. The Company did not hold any investments in interest rate sensitive instruments as of December 31, 2021.

Item 8. Financial Statements and Supplementary Data.

The information required by this Item 8 begins on page F-1 in Item 15 of Part IV of this Annual Report on Form 10-K and is incorporated into 

this item by reference.

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

None.

Item 9A. Controls and Procedures.

Disclosure Controls and Procedures

We carried out an evaluation as of the end of the period covered by this Annual Report on Form 10-K, under the supervision and with the 

participation of our management, including our principal executive officer and principal financial officer, of the effectiveness of our disclosure controls and 
procedures pursuant to paragraph (b) of Rule 13a-15 and 15d-15 under the Exchange Act. Based on that review, the principal executive officer and 
principal financial officer have concluded that our disclosure controls and procedures are effective to ensure that information required to be disclosed by us 
in the reports we file or submit under the Exchange Act (1) is recorded, processed, summarized, and reported within the time periods specified in the SEC 
rules and forms, and (2) 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.

We do not expect that our disclosure controls and procedures will prevent all errors and all fraud. A control procedure, no matter how well 

conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control procedure are met. Because of the inherent 
limitations in all control procedures, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within 
our Company have been detected. These inherent limitations include the realities that judgments in decision making can be faulty, and that breakdowns can 
occur because of simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more 
people, or by management override of the control. We considered these limitations during the development of our disclosure controls and procedures, and 
will continually reevaluate them to ensure they provide reasonable assurance that such controls and procedures are effective.

Internal Control over Financial Reporting

Management’s Annual Report on Internal Control over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting for our Company, as such term is 

defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act.

Our 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, and includes those policies 
and procedures that:

•

•

•

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

provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with 
generally accepted accounting principles, and that 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. 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. Management assessed the effectiveness of our internal control over financial reporting as of 
December 31, 2021. 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 this assessment, management has concluded that, as of December 31, 2021, our internal control over financial reporting was effective 

based on those criteria. 

-83-

 
The effectiveness of our internal control over financial reporting as of December 31, 2021, has been audited by KPMG LLP, an independent 

registered public accounting firm, as stated in their report which appears in this Annual Report on Form 10-K.

Changes in Internal Control over Financial Reporting

There have not been material changes in our internal control over financial reporting as defined in Rules 13a–15(f) and 15d–15(f) under the 
Exchange Act for the quarter ended December 31, 2021 that our certifying officers concluded materially affected, or are reasonably likely to materially 
affect, our internal control over financial reporting.

Item 9B. Other Information.

None.

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections.

Not applicable.

-84-

 
 
 
Item 10. Directors, Executive Officers and Corporate Governance.

PART III

The information regarding our directors and executive officers required by this item will be included in either an amendment to this Annual 

Report on Form 10-K or in our definitive proxy statement for our 2022 annual meeting of stockholders to be filed with the Commission not later than 120 
days after the end of the fiscal year covered by this Annual Report on Form 10-K and is incorporated herein by reference.

Item 11. Executive Compensation.

The information required by this item will be included in either an amendment to this Annual Report on Form 10-K or in our definitive proxy 
statement for our 2022 annual meeting of stockholders to be filed with the Commission not later than 120 days after the end of the fiscal year covered by 
this Annual Report on Form 10-K and is incorporated herein by reference.

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

The information required by this item will be included in either an amendment to this Annual Report on Form 10-K or in our definitive proxy 
statement for our 2022 annual meeting of stockholders to be filed with the Commission not later than 120 days after the end of the fiscal year covered by 
this Annual Report on Form 10-K and is incorporated herein by reference.

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

The information required by this item will be included in either an amendment to this Annual Report on Form 10-K or in our definitive proxy 
statement for our 2022 annual meeting of stockholders to be filed with the Commission not later than 120 days after the end of the fiscal year covered by 
this Annual Report on Form 10-K and is incorporated herein by reference.

Item 14. Principal Accounting Fees and Services.

The information required by this item will be included in either an amendment to this Annual Report on Form 10-K or in our definitive proxy 
statement for our 2022 annual meeting of stockholders to be filed with the Commission not later than 120 days after the end of the fiscal year covered by 
this Annual Report on Form 10-K and is incorporated herein by reference.

-85-

 
Item 15. Exhibits, Financial Statement Schedules.

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

PART IV

(1) Financial Statements

The following consolidated financial statements of the Company and the Report of KPMG LLP, Independent Registered Public Accounting 

Firm, are included in Part IV of this Annual Report on Form 10-K on the pages indicated:

Report of Independent Registered Public Accounting Firm (KPMG LLP, Boston, MA, Auditor Firm ID: 185)
Consolidated Balance Sheets
Consolidated Statements of Operations and Comprehensive Loss
Consolidated Statements of Stockholders’ Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements

F-2
F-4
F-5
F-6
F-7
F-8

(2) Financial Statement Schedules

All schedules are omitted because they are not applicable or the required information is shown in the consolidated financial statements or the 

notes thereto.

(3) Exhibits

The exhibits required by Item 601 of Regulation S-K are listed in paragraph (b) below.

(b) Exhibits.

The following exhibits are filed herewith or are incorporated by reference to exhibits filed with the SEC:

Description

Form

Incorporated by Reference to Filings Indicated
Filing
Date

File No.

Exhibit

Provided
Herewith

Exhibit
Number

   2.1

   2.2*

   3.1

   3.2

   3.3

   3.4

   3.5

 Agreement and Plan of Merger dated June 6, 2013 between 
Sarepta Therapeutics, Inc., a Delaware corporation, and 
Sarepta Therapeutics, Inc., an Oregon corporation.

 Warrant to Purchase Common Stock of Myonexus 
Therapeutics, Inc., issued by Myonexus Therapeutics, Inc. to 
Sarepta Therapeutics, Inc., dated as of May 3, 2018.

8-K12B

001-14895

10-Q

001-14895

 Amended and Restated Certificate of Incorporation.

8-K12B

001-14895

  Amendment to the Amended and Restated Certificate of 

Incorporation.

 Amended and Restated Bylaws.

 Amendment No. 1 to the Amended and Restated Bylaws.

 Certificate of Amendment to the Amended and Restated 
Certificate of Incorporation of Sarepta Therapeutics, Inc.

8-K

8-K

8-K

8-K

001-14895

001-14895

001-14895

001-14895

   4.1

 Form of Specimen Certificate for Common Stock.

10-Q

001-14895

-86-

2.1

2.1

3.1

3.1

3.1

3.1

3.1

4.1

6/6/13

8/8/18

6/6/13

6/30/15

9/25/14

1/13/20

6/8/2020

8/8/13

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   4.2

   4.3

   4.4

  10.1†

  10.2†

  10.3†

  10.4†

  10.5†

  10.6†

  10.7†

  10.8†

  10.9

  10.10*

  10.11*

  10.12

  10.13†

  10.14

  10.15†

  10.16†

  10.17†

  10.18†

  10.19†

 Indenture, dated as of November 14, 2017, by and between 
Sarepta Therapeutics, Inc. and U. S. Bank National 
Association (including the form of the 1.50% Convertible 
Senior Note due 2024).  

8-K

001-14895

4.1

11/14/17

 Form of Note (included in Exhibit 4.2) 

 Description of Registered Securities

8-K

10-K

001-14895

001-14895

4.1

4.4

11/14/17

2/26/20

 AVI BioPharma, Inc. 2002 Equity Incentive Plan.

  Schedule 14A  

001-14895

  Appendix A  

4/11/02

 Sarepta Therapeutics, Inc. Amended and Restated 2011 
Equity Incentive Plan.

 Form of Stock Option Award Agreement under the Amended 
and Restated 2011 Equity Incentive Plan.

 Form of Restricted Stock Agreement under the Amended and 
Restated 2011 Equity Incentive Plan.

 Form of Restricted Stock Unit Award Agreement under 2011 
Equity Incentive Plan.

 Form of Stock Appreciation Right Award Agreement under 
the 2011 Equity Incentive Plan.

 Sarepta Therapeutics, Inc. Amended and Restated 2013 
Employee Stock Purchase Plan.
 Sarepta Therapeutics, Inc. 2014 Employment Commencement 
Incentive Plan, as amended.

 Form of Stock Option Award Agreement under 2014 
Employment Commencement Incentive Plan

 Amended and Restated Exclusive License Agreement by and 
among The University of Western Australia, Sarepta 
Therapeutics, Inc., and Sarepta International CV dated April 
10, 2013.

 First Amendment to License Agreement by and among The 
University of Western Australia, Sarepta Therapeutics, Inc., 
and Sarepta International CV dated June 19, 2016.
 Lease Agreement dated June 25, 2013 by and between 
Sarepta Therapeutics, Inc. and ARE-MA Region No. 38, 
LLC.

8-K

10-K

10-K

10-K

10-K

8-K

S-8

10-K

10-Q

001-14895

10.1

7/1/16

001-14895

10.13

2/28/17

001-14895

10.14

2/28/17

001-14895

10.17

2/28/17

001-14895

10.18

2/28/17

001-14895

001-14895

10.2

4.4

7/1/16

2/25/16

001-14895

10.28

3/3/14

001-14895

10.1

5/9/13

10-Q

001-14895

8-K

001-14895

 Amendment No. 1 to the Sarepta Therapeutics, Inc. Amended 
and Restated 2011 Equity Incentive Plan

8-K

001-14895

 Asset Purchase Agreement dated February 20, 2017 by and 
between Sarepta Therapeutics Inc. and Gilead Sciences, Inc.

10-Q

001-14895

 Employment Agreement, dated as of June 26, 2017, between 
Sarepta Therapeutics, Inc. and Douglas S. Ingram

 Change in Control and Severance Agreement by and between 
Douglas S. Ingram and Sarepta Therapeutics, Inc., effective 
June 26, 2017

 Amendment No. 1 to the Sarepta Therapeutics, Inc. 2014 
Employment Commencement Incentive Plan

 Restricted Stock Agreement under the 2014 Employment 
Commencement Incentive Plan 

 Performance Stock Option Award Agreement under the 2014 
Employment Commencement Incentive Plan

8-K

8-K

8-K

8-K

8-K

001-14895

001-14895

001-14895

001-14895

001-14895

-87-

10.1

10.1

10.1

10.1

10.1

10.2

10.3

10.4

10.5

8/9/16

7/1/13

6/30/15

5/4/17

6/28/17

6/28/17

6/28/17

6/28/17

6/28/17

 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  10.20*

  10.21*

  10.22

  10.23

  10.24

  10.25

  10.26

 Settlement Agreement between Sarepta Therapeutics, Inc., 
Sarepta International C.V. and The University of Western 
Australia on the one hand, and BioMarin Leiden Holding BV, 
BioMarin Nederlands BV and BioMarin Technologies BV on 
the other hand dated July 17, 2017

 License Agreement between Sarepta Therapeutics, Inc. and 
Sarepta International C.V. on the one hand and BioMarin 
Leiden Holding BV, BioMarin Nederlands BV and BioMarin 
Technologies BV on the other hand dated July 17, 2017 

 Base Call Option Transaction Confirmation, dated as of 
November 8, 2017, between Sarepta Therapeutics, Inc. and 
JPMorgan Chase Bank, National Association, London 
Branch.  

 Base Call Option Transaction Confirmation, dated as of 
November 8, 2017, between Sarepta Therapeutics, Inc. and 
Goldman Sachs & Co. LLC.  

 Additional Call Option Transaction Confirmation, dated as of 
November 9, 2017, between Sarepta Therapeutics, Inc. and 
JPMorgan Chase Bank, National Association, London Branch 

 Additional Call Option Transaction Confirmation, dated as of 
November 9, 2017, between Sarepta Therapeutics, Inc. and 
Goldman Sachs & Co. LLC  

 Seventh Amendment to a Lease Agreement between the 
Company and ARE-MA Region No. 38, LLC dated April 27, 
2018

  10.27†

 Sarepta Therapeutics, Inc. 2018 Equity Incentive Plan

  10.28†

  10.29†

  10.30†

  10.31†

  10.32†

  10.33†

  10.34†

  10.35†

 Employment Agreement between Sarepta Therapeutics, Inc. 
and Gilmore O’Neill, M.D., effective as of June 7, 2018

 Change in Control and Severance Agreement between 
Sarepta Therapeutics, Inc. and Gilmore O’Neill, M.D., 
effective as of June 7, 2018

 Letter Agreement between Douglas S. Ingram and Sarepta 
Therapeutics, Inc. dated June 26, 2018

 Form of Restricted Stock Unit Award Agreement under 
Sarepta Therapeutics, Inc. 2014 Employment Commencement 
Incentive Plan

 Amendment No. 2 to the Sarepta Therapeutics, Inc. 2014 
Employment Commencement Incentive Plan

 Form of Stock Option Award Agreement under Sarepta 
Therapeutics, Inc. 2018 Equity Incentive Plan

 Form of Restricted Stock Award Agreement under Sarepta 
Therapeutics, Inc. 2018 Equity Incentive Plan

 Form of Restricted Stock Unit Award Agreement under 
Sarepta Therapeutics, Inc. 2018 Equity Incentive Plan

10-Q

001-14895

10.7

8/3/17

10-Q

001-14895

10.8

8/3/17

8-K

001-14895

10.1

11/14/17

8-K

001-14895

10.2

11/14/17

8-K

001-14895

10.3

11/14/17

8-K

001-14895

10.4

11/14/17

10-Q

001-14895

10.4

5/3/18

001-14895

001-14895

001-14895

001-14895

001-14895

001-14895

001-14895

001-14895

001-14895

10.1

10.2

10.3

10.4

10.5

10.6

10.1

10.2

10.3

8/8/18

8/8/18

8/8/18

8/8/18

8/8/18

8/8/18

10/31/18

10/31/18

10/31/18

10-Q

10-Q

10-Q

10-Q

10-Q

10-Q

10-Q

10-Q

10-Q

-88-

 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 Form of Stock Appreciation Right Award Agreement under 
Sarepta Therapeutics, Inc. 2018 Equity Incentive Plan

 Amendment to Restricted Stock Award Agreement between 
Douglas S. Ingram and Sarepta Therapeutics, Inc. dated 
December 17, 2018

10-Q

10-K

001-14895

10.4

10/31/18

001-14895

10.75

2/28/19

  10.36†

  10.37†

  10.38^

  10.39†

  10.40

  10.41†

  10.42†

  10.43^

  10.44

  10.45

  10.46

 Amendment No. 1 to License Agreement between Sarepta 
Therapeutics, Inc. and ST International Holdings Two, Inc. on 
the one hand and BioMarin Leiden Holding BV, BioMarin 
Nederlands BV and BioMarin Technologies BV on the other 
hand

 Amendment No. 1 to the Sarepta Therapeutics, Inc. Amended 
and Restated 2013 Employment Stock Purchase Plan (as 
Amended and Restated on June 27, 2016)

 Letter Agreement between Sarepta Therapeutics, Inc. and 
Myonexus Therapeutics, Inc. dated February 26, 2019

 Form of Executive Vice President Severance Letter 
Agreement

 Form of Executive Vice President Change in Control and 
Severance Agreement 

 License, Collaboration, and Option Agreement between 
Sarepta Therapeutics Three, LLC and F. Hoffman-La Roche 
Ltd dated December 21, 2019

 Stock Purchase Agreement between Sarepta Therapeutics, 
Inc. and Roche Finance Ltd dated December 21, 2019

 Loan Agreement among Sarepta Therapeutics, Inc., 
BioPharma Credit PLC and BioPharma Credit Investments V 
(Master) LP dated December 13, 2019

 Guaranty and Security Agreement between Sarepta 
Therapeutics, Inc. and BioPharma Credit PLC dated 
December 20, 2019

  10.47†

 Director Compensation Policy

  10.48†

  10.49†

  10.50†

  10.51†

  10.52

 Offer Letter dated November 11, 2019 by and between 
Sarepta Therapeutics, Inc. and William F. Ciambrone

 Amendment to Offer Letter by and between Sarepta 
Therapeutics, Inc. and William F. Ciambrone

 Amendment No. 2 to the Sarepta Therapeutics, Inc. 2014 
Employment Commencement Incentive Plan

 Amendment No. 1 to the Sarepta Therapeutics, Inc. 2018 
Equity Incentive Plan

 First Amendment dated September 24, 2020 to Loan 
Agreement among Sarepta Therapeutics, Inc., BioPharma 
Credit PLC and BioPharma Credit Investments V (Master) 
LP dated December 13, 2019

10-Q

001-14895

10.1

8/7/19

10-Q

001-14895

10.4

8/7/19

10-Q

10-Q

10-Q

10-K

10-K

10-K

001-14895

001-14895

001-14895

10.1

10.2

10.3

5/8/19

5/8/19

5/8/19

 001-14895

10.51

2/26/20

 001-14895

10.52

2/26/20

 001-14895

10.53

2/26/20

10-K

 001-14895

10.54

2/26/20

10-K

10-K

10-K

8-K

8-K

 001-14895

 001-14895

10.55

10.56

2/26/20

2/26/20

 001-14895

10.57

2/26/20

001-14895

001-14895

10.1

10.1

2/21/20

6/8/2020

10-Q

001-14895

10.1

11/5/2020    

  10.53†

 Promotion Letter dated December 14, 2020 by and between 
Sarepta Therapeutics, Inc. and Louise Rodino-Klapac

10-K

001-14895

10.59

3/1/2021

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  10.54†

 Offer Letter dated April 19, 2018 by and between Sarepta 
Therapeutics, Inc. and Louise Rodino-Klapac

10-K

001-14895

10.60

3/1/2021

  10.55†

 Promotion Letter dated December 14, 2020 by and between 
Sarepta Therapeutics, Inc. and Ian M. Estepan

10-K

001-14895

10.61

3/1/2021

  10.56†

 Offer Letter dated by December 18, 2014 and between 
Sarepta Therapeutics, Inc. and Ian M. Estepan

10-K

001-14895

10.62

3/1/2021

  10.57

  10.58

  10.59

  10.60

  10.61

  10.62

  10.63

  10.64

 Amendment no. 1 dated October 23, 2020 to the License, 
Collaboration, and Option Agreement between Sarepta 
Therapeutics Three, LLC and F. Hoffman-La Roche Ltd dated 
December 21, 2019

 Amendment no. 2 dated October 28, 2020 to the License, 
Collaboration, and Option Agreement between Sarepta 
Therapeutics Three, LLC and F. Hoffman-La Roche Ltd, 
dated December 21, 2019

 Amendment no. 3 dated February 4, 2021 to the License, 
Collaboration, and Option Agreement between Sarepta 
Therapeutics Three, LLC and F. Hoffman-La Roche Ltd, 
dated December 21, 2019

 Amendment no. 4 dated June 23, 2021 to the License, 
Collaboration, and Option Agreement between Sarepta 
Therapeutics Three, LLC and F. Hoffman-La Roche Ltd, 
dated December 21, 2019 

  Amendment no. 5 dated August 31, 2021 to the License, 
Collaboration, and Option Agreement between Sarepta 
Therapeutics Three, LLC and F. Hoffman-La Roche Ltd, 
dated December 21, 2019.

  Amendment no. 6 dated November 30, 2021 to the License, 

Collaboration, and Option Agreement between Sarepta 
Therapeutics Three, LLC and F. Hoffman-La Roche Ltd, 
dated December 21, 2019 

  Amendment no. 7 dated January 5, 2022 to the License, 
Collaboration, and Option Agreement between Sarepta 
Therapeutics Three, LLC and F. Hoffman-La Roche Ltd, 
dated December 21, 2019 

  Amendment no. 8 dated January 28, 2022 to the License, 
Collaboration, and Option Agreement between Sarepta 
Therapeutics Three, LLC and F. Hoffman-La Roche Ltd, 
dated December 21, 2019 

  10.65†

 Separation Agreement and General Release, signed 
November 15, 2021 between Sarepta Therapeutics, Inc. and 
Dr. Gilmore O'Neill

-90-

10-Q

001-14895

10.1

8/4/2021

10-Q

001-14895

10.2

8/4/2021

10-Q

001-14895

10.3

8/4/2021

10-Q

001-14895

10.4

8/4/2021

10-Q

001-14895

10.1

11/3/2021  

X

X

X

X

 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
  10.66^

  21.1

  23.1

  24.1

  31.1

  31.2

  32.1**

  32.2**

  101

 Amendment No. 2, dated November 17, 2021 to License 
Agreement between Sarepta Therapeutics, Inc. and ST 
International Holdings Two, Inc. on the one hand and 
BioMarin Leiden Holding BV, BioMarin Nederlands BV and 
BioMarin Technologies BV on the other hand

 Subsidiaries of the Registrant.

 Consent of Independent Registered Public Accounting Firm.

  Power of Attorney (contained on signature page).

 Certification of the Company’s President and Chief Executive 
Officer, Douglas S. Ingram, pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

 Certification of the Company’s Executive Vice President, 
Chief Financial Officer, Ian Estepan, pursuant to Section 302 
of the Sarbanes-Oxley Act of 2002.

 Certification of the Company’s President and Chief Executive 
Officer, Douglas S. Ingram, pursuant to Section 906 of the 
Sarbanes-Oxley Act of 2002.

 Certification of the Company’s Executive Vice President, 
Chief Financial Officer, Ian Estepan, pursuant to Section 906 
of the Sarbanes-Oxley Act of 2002.

 The following financial statements from the Annual Report 
on Form 10-K of Sarepta Therapeutics, Inc. for the year 
ended December 31, 2021, formatted in Inline XBRL: (i) 
Consolidated Balance Sheets; (ii) Consolidated Statements of 
Operations and Comprehensive Loss; (iii) Consolidated 
Statements of Stockholders’ Equity; (iv) Consolidated 
Statements of Cash Flows; and (v) Notes to Consolidated 
Financial Statements, tagged as blocks of text and including 
detailed tags.

  104

 The Cover page from the Annual Report on Form 10-K of 
Sarepta Therapeutics, Inc for the year ended December 31, 
2021, formatted in Inline XBRL.

X

X

X

X

X

X

X

X

X

X

† Indicates management contract or compensatory plan, contract or arrangement.
^ Certain identified information has been excluded from the exhibit because it is both (i) not material and (ii) would be competitively harmful if publicly 
disclosed.
* Confidential treatment has been granted for portions of this exhibit.
** Furnished herewith. This exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, or otherwise subject to 
the liability of that Section. Such exhibit shall not be deemed incorporated into any filing under the Securities Act of 1933 or the Securities Exchange Act 
of 1934.

Item 16. Form 10-K Summary.

Not applicable.

-91-

 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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.

Dated: March 1, 2022

  SAREPTA THERAPEUTICS, INC.

SIGNATURES

  By:

/s/ Douglas S. Ingram
Douglas S. Ingram
President and Chief Executive Officer

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Douglas S. Ingram 

and Ian M. Estepan, and each of them, with full power of substitution and resubstitution and full power to act without the other, as his or her true and lawful 
attorney-in-fact and agent to act in his or her name, place and stead and to execute in the name and on behalf of each person, individually and in each 
capacity stated below, and to file, any and all documents in connection therewith, with the Securities and Exchange Commission, granting unto said 
attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing, ratifying and confirming all that 
said attorneys-in-fact and agents or any of them or their and his or her substitute or substitutes, may lawfully do or cause to be done by virtue thereof.

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 indicated on March 1, 2022:

Signature

/s/ Douglas S. Ingram

Douglas S. Ingram

/s/ Ian M. Estepan

Ian M. Estepan

/s/ M. Kathleen Behrens

M. Kathleen Behrens, Ph.D.

/s/ Richard Barry

Richard Barry

/s/ Mary Ann Gray
Mary Ann Gray, Ph.D.

/s/ Stephen L. Mayo

Stephen L. Mayo, Ph.D.

President, Chief Executive Officer and Director (Principal Executive Officer)

Title

Executive Vice President, Chief Financial Officer (Principal Financial and Accounting 
Officer)

Chairwoman of the Board

Director

  Director

Director

/s/ Claude Nicaise

Director

Claude Nicaise, MD

/s/ Hans Wigzell

Director

Hans Wigzell, M.D., Ph.D.

-92-

 
  
  
    
  
  
 
   
 
   
 
 
  
  
     
 
 
 
 
  
     
 
 
 
 
  
     
 
 
 
 
  
  
     
 
 
 
 
  
 
     
   
 
   
 
 
 
 
  
  
     
 
 
 
 
  
  
     
 
 
 
 
  
 
   
 
SAREPTA THERAPEUTICS, INC.
CONSOLIDATED FINANCIAL STATEMENTS

Report of Independent Registered Public Accounting Firm (KPMG LLP, Boston, MA, Auditor Firm ID: 185)
Consolidated Balance Sheets
Consolidated Statements of Operations and Comprehensive Loss
Consolidated Statements of Stockholders’ Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements

F-1

Page
Number
F-2
F-4
F-5
F-6
F-7
F-8

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

Report of Independent Registered Public Accounting Firm

Opinions on the Consolidated Financial Statements and Internal Control Over Financial Reporting 

We have audited the accompanying consolidated balance sheets of Sarepta Therapeutics, Inc. and subsidiaries (the Company) as of December 31, 2021 and 
2020, the related consolidated statements of operations and comprehensive loss, stockholders’ equity, and cash flows for each of the years in the three-year 
period ended December 31, 2021, and the related notes (collectively, the consolidated financial statements). We also have audited the Company’s internal 
control over financial reporting as of December 31, 2021, based on criteria established in Internal Control – Integrated Framework (2013) issued by the 
Committee of Sponsoring Organizations of the Treadway Commission.  

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of 
December 31, 2021 and 2020, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2021, in 
conformity with U.S. generally accepted accounting principles. Also in our opinion, the Company maintained, in all material respects, effective internal 
control over financial reporting as of December 31, 2021 based on criteria established in Internal Control – Integrated Framework (2013) issued by the 
Committee of Sponsoring Organizations of the Treadway Commission.

Change in Accounting Principle

As discussed in Note 2 to the consolidated financial statements, the Company has changed its method of accounting for convertible debt as of January 1, 
2021 due to the adoption of Accounting Standards Update (ASU) No. 2020-06, Debt – Debt with Conversion and Other Options (Subtopic 470-20) and 
Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own 
Equity.

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 the accompanying Management’s Annual Report on 
Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s consolidated financial statements and an opinion 
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 (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly 
reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit 
preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are 
being made only in 

F-2

 
 
accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely 
detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

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

Critical Audit Matter

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

Evaluation of lower of cost or net realizable value of raw materials inventory

As described in Note 2 and Note 8 to the consolidated financial statements, approximately 19%, or $58.8 million, of the Company’s total 
inventory balance is comprised of raw materials. As discussed in Note 2, the Company periodically analyzes its raw materials inventories, and 
writes down obsolete or otherwise unmarketable inventory to its estimated net realizable value. 

We identified the evaluation of lower of cost or net realizable value of raw materials inventory as a critical audit matter. The estimate of expected 
future demand for raw materials inventory is difficult to assess and results in the application of greater auditor judgment. Specifically, 
challenging auditor judgment was required to assess the potential impact the Company’s gene therapy technologies and competitor RNA-targeted 
therapeutic or gene therapy products could have on existing raw materials inventory.  

The following are the primary procedures we performed to address this critical audit matter. We evaluated the design and tested the operating 
effectiveness of certain internal controls over the Company’s inventory valuation process, including controls related to the estimate of expected 
future demand for raw materials. We compared the Company’s prior period forecasted demand for raw materials to actual results to assess their 
ability to accurately estimate expected future demand. We evaluated clinical progress associated with the Company’s gene therapy technologies 
by inspecting internal meeting minutes and interviewing research and development personnel of the Company and assessed the potential impact 
of those technologies on expected future demand for raw materials inventory. We also read publicly available information to identify information 
regarding other competitor entities with RNA-targeted therapeutic or gene therapy products that could impact the Company’s estimates of 
expected future demand.

/s/ KPMG LLP

We have served as the Company’s auditor since 2002. 

Boston, Massachusetts
March 1, 2022

F-3

 
 
Sarepta Therapeutics, Inc.

Consolidated Balance Sheets

(in thousands, except share and per share amounts)

Assets
Current assets:

Cash and cash equivalents
Short-term investments
Accounts receivable
Inventory
Other current assets

Total current assets
Property and equipment, net
Intangible assets, net
Right of use assets
Other non-current assets

Total assets

Liabilities and Stockholders’ Equity
Current liabilities:

Accounts payable
Accrued expenses
Deferred revenue, current portion
Other current liabilities

Total current liabilities

Long-term debt
Lease liabilities, net of current portion
Deferred revenue, net of current portion
Contingent consideration
Other non-current liabilities

Total liabilities

Commitments and contingencies (Note 21)
Stockholders’ equity:
Preferred stock, $.0001 par value, 3,333,333 shares authorized; none issued and
   outstanding
Common stock, $.0001 par value, 198,000,000 shares authorized; 87,126,974
   and 79,374,247 issued and outstanding at December 31, 2021 and 2020, respectively
Additional paid-in capital
Accumulated other comprehensive (loss) income, net of tax
Accumulated deficit

Total stockholders’ equity
Total liabilities and stockholders’ equity

As of December 31,

2021

2020

  $

  $

  $

2,115,869  
—  
152,990  
186,212  
149,028  
2,604,099  
191,156  
14,239  
45,531  
292,949  
3,147,974  

76,741  
271,697  
89,244  
15,051  
452,733  
1,096,876  
41,512  
574,244  
43,600  
11,000  
2,219,965  

1,502,648  
435,923  
101,340  
231,961  
213,324  
2,485,196  
190,430  
13,628  
91,761  
203,703  
2,984,718  

111,090  
193,553  
89,244  
22,139  
416,026  
992,493  
80,367  
663,488  
50,800  
19,785  
2,222,959  

—  

—  

9  
4,134,768  
(20 )
(3,206,748 )
928,009  
3,147,974  

  $

8  
3,609,877  
3  
(2,848,129 )
761,759  
2,984,718  

  $

 $

  $

  $

See accompanying notes to consolidated financial statements.

F-4

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
   
   
   
   
   
   
   
  
   
   
   
   
   
   
   
   
   
 
 
   
 
   
 
   
 
   
 
   
 
   
   
   
   
   
   
   
  
   
   
   
   
   
   
   
   
   
   
   
  
   
 
   
 
   
 
   
 
   
   
   
   
   
   
   
   
   
   
   
   
   
 
Sarepta Therapeutics, Inc.

Consolidated Statements of Operations and Comprehensive Loss

(in thousands, except per share data)

For the Year Ended December 31,

2021

2020

2019

Revenues:

Products, net
Collaboration and other

Total revenues

Cost and expenses:

Cost of sales (excluding amortization of in-licensed rights)
Research and development
Selling, general and administrative
Settlement and license charges
Amortization of in-licensed rights
Acquired in-process research and development

Total cost and expenses
Operating loss

Other income (loss):

Gain from sale of Priority Review Voucher
Gain (loss) on contingent consideration, net
Other expense, net
Total other income (loss)

Loss before income tax (benefit) expense

Income tax (benefit) expense

Net loss

Other comprehensive loss:

Unrealized (losses) gains on investments, net of tax

Total other comprehensive (loss) income
Comprehensive loss

Net loss per share — basic and diluted

Weighted average number of shares of common stock used 
   in computing basic and diluted net loss per share

  $

  $

  $

612,401     $
89,486      
701,887      

97,049      
771,182      
282,660      
10,000      
706      
—      
1,161,597      
(459,710 )    

102,000      
7,200      
(68,438 )    
40,762      

(418,948 )    
(168 )    
(418,780 )    

(23 )    
(23 )    
(418,803 )   $

455,865     $
84,234      
540,099      

63,382      
722,343      
317,875      
—      
662      
—      
1,104,262      
(564,163 )    

108,069      
(45,000 )    
(51,971 )    
11,098      

(553,065 )    
1,063      
(554,128 )    

(47 )    
(47 )    
(554,175 )   $

(5.15 )   $

(7.11 )   $

380,833  
—  
380,833  

56,586  
560,909  
284,812  
10,000  
849  
173,240  
1,086,396  
(705,563 )

—  
—  
(8,317 )
(8,317 )

(713,880 )
1,195  
(715,075 )

149  
149  
(714,926 )

(9.71 )

81,262      

77,956      

73,615  

See accompanying notes to consolidated financial statements.

F-5

 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
   
   
   
  
 
     
     
   
 
     
     
   
   
  
   
  
   
  
   
   
  
 
     
     
   
 
     
     
   
   
  
   
   
  
 
     
     
   
   
   
   
  
 
     
     
   
 
     
     
   
  
   
  
 
     
     
   
  
   
     
     
 
  
 
Sarepta Therapeutics, Inc.

Consolidated Statements of Stockholders’ Equity

(in thousands)

   Additional

    Accumulated    
Other

Total

BALANCE AT DECEMBER 31, 2018

71,072  

  $

7     $

2,611,294  

  $

(99 )   $

Common Stock

Shares

    Amount

Paid-In
Capital

(Loss) Gain

    Comprehensive     Accumulated     Stockholders'

Deficit
(1,578,926 )   $

Equity

1,032,276  

Exercise of options and stock appreciation 
   rights for common stock
Grant of restricted stock awards and vest 
   of restricted stock units, net of cancellations
Shares withheld for taxes
Issuance of common stock for cash, net of 
   offering costs
Issuance of common stock for 
   collaboration agreement
Issuance of common stock under employee 
   stock purchase plan
Stock-based compensation
Unrealized gains from available-for-sale 
   securities, net of tax
Net loss

BALANCE AT DECEMBER 31, 2019

Exercise of options for common stock
Vest of restricted stock units/awards, net of 
   forfeitures
Shares withheld for taxes
Issuance of common stock to Roche, net of
   issuance costs
Issuance of common stock under employee
    stock purchase plan
Stock-based compensation
Unrealized losses from available-for-sale
    securities, net of tax
Net loss

BALANCE AT DECEMBER 31, 2020

Cumulative effect of accounting change to
    adopt ASU 2020-06
Exercise of options for common stock
Vest of restricted stock units/awards
Shares withheld for taxes
Issuance of common stock for cash, 
    net of offering costs
Issuance of common stock under employee
    stock purchase plan
Stock-based compensation
Unrealized losses from available-for-sale
    securities, net of tax
Net loss

BALANCE AT DECEMBER 31, 2021

1,125  

—      

31,522  

68  
(78 )    

—      
—      

—  
(9,135 )    

2,604  

1      

365,353  

302  

92  
—  

—  
—  
75,185  
1,443  

159  
(37 )    

2,522  

102  
—  

—  
—  
79,374  

—  
283  
277  
(18 )    

7,099  

112  
—  

—  
—  
87,127  

  $

—      

29,415  

—      
—      

—      
—      
8      
—      

—      
—      

5,079  
78,602  

—  
—  
3,112,130  
76,492  

—  
(6,333 )    

—      

312,053  

—      
—      

—      
—      
8      

—      
—      
—      
—      

7,465  
108,070  

—  
—  
3,609,877  

(156,953 )    
12,963  
—  
(1,432 )    

1      

548,531  

—      
—      

—      
—      
9     $

7,839  
113,943  

—  
—  
4,134,768  

  $

—  

—  
—  

—  

—  

—  
—  

149  
—  
50  
—  

—  
—  

—  

—  
—  

(47 )    
—  
3  

—  
—  
—  
—  

—  

—  
—  

(23 )    
—  
(20 )   $

—  

—  
—  

—  

—  

—  
—  

—  

(715,075 )    
(2,294,001 )    

—  

—  
—  

—  

—  
—  

—  

(554,128 )    
(2,848,129 )    

60,161  
—  
—  
—  

—  

—  
—  

—  

(418,780 )    
(3,206,748 )   $

31,522  

—  
(9,135 )

365,354  

29,415  

5,079  
78,602  

149  
(715,075 )
818,187  
76,492  

—  
(6,333 )

312,053  

7,465  
108,070  

(47 )
(554,128 )
761,759  

(96,792 )
12,963  
—  
(1,432 )

548,532  

7,839  
113,943  

(23 )
(418,780 )
928,009  

See accompanying notes to consolidated financial statements.

F-6

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

Cash flows from operating activities:
Net loss

Adjustments to reconcile net loss to cash flows in operating activities:

(Gain) loss on contingent consideration, net
Gain from sale of Priority Review Voucher, net of commission
Depreciation and amortization
Reduction in the carrying amounts of the right of use assets
Non-cash interest expense
Stock-based compensation
Impairment of equity investment
Acquired in-process research and development
Non-cash up-front payment to StrideBio
Other
Changes in operating assets and liabilities, net:

Net increase in accounts receivable
Net increase in inventory
Net decrease (increase) in other assets
Net (decrease) increase in deferred revenue
Net increase in accounts payable, accrued expenses,
   lease liabilities and other liabilities

Net cash (used in) provided by operating activities

Cash flows from investing activities:

Purchase of property and equipment
Proceeds from sale of Priority Review Voucher, net of commission
Purchase of available-for-sale securities
Maturity and sales of available-for-sale securities
Acquisition of Myonexus Therapeutics, Inc., net of cash acquired
Other

Net cash provided by (used in) investing activities

Cash flows from financing activities:

Proceeds from sales of common stock, net of offering costs
Proceeds from exercise of stock options and purchase of stock under the 
    Employee Stock Purchase Program
Taxes paid related to net share settlement of equity awards
Proceeds from issuance of common stock to Roche, net of offering costs
Proceeds from term loans
Debt issuance costs

Net cash provided by financing activities

Increase in cash and cash equivalents

Cash, cash equivalents and restricted cash:

Beginning of year
End of year

Reconciliation of cash, cash equivalents and restricted cash:

Cash and cash equivalents
Restricted cash in other assets

Total cash, cash equivalents and restricted cash

Supplemental disclosure of cash flow information:

Cash paid during the period for interest
Cash paid during the period for income taxes

Supplemental schedule of non-cash activities:

Lease liabilities arising from obtaining right of use assets
Lease liabilities terminated
Intangible assets and property and equipment included in accounts payable and accrued 
expenses
Shares withheld for tax included in accrued expenses
Accrued debt issuance costs

2021

For the Year Ended December 31,
2020

2019

  $

(418,780 )

  $

(554,128 )

  $

(715,075 )

(7,200 )
(102,000 )
38,017  
11,325  
7,581  
113,943  
4,488  
—  
—  
7,620  

(51,650 )
(83,772 )
103,203  
(89,244 )

23,297  
(443,172 )

(38,490 )
102,000  
(29,988 )
466,000  
—  
(4,109 )
495,413  

548,532  

20,802  
(7,765 )
—  
—  
—  
561,569  

613,810  

1,511,713  
2,125,523  

2,115,869  
9,654  
2,125,523  

55,949  
583  

13,225  
40,133  

4,162  
—  
—  

  $

  $

  $

  $
  $

  $
  $

  $
  $
  $

45,000  
(108,069 )
26,911  
12,828  
25,454  
108,070  
—  
—  
—  
(2,656 )

(10,461 )
(60,582 )
(166,328 )
749,429  

41,998  
107,466  

(82,202 )
108,069  
(1,333,568 )
1,189,480  
—  
(3,500 )
(121,721 )

—  

83,957  
(4,798 )
312,053  
291,150  
(39 )
682,323  

668,068  

843,645  
1,511,713  

1,502,648  
9,065  
1,511,713  

34,418  
2,510  

59,327  
—  

5,151  
6,333  
11,000  

  $

  $

  $

  $
  $

  $
  $

  $
  $
  $

—  
—  
24,500  
6,047  
21,444  
78,602  
—  
173,240  
29,415  
(7,755 )

(41,835 )
(45,934 )
(102,091 )
—  

122,979  
(456,463 )

(59,631 )
—  
(1,193,632 )
1,715,626  
(172,556 )
(3,082 )
286,725  

365,354  

36,601  
(4,337 )
—  
245,625  
(689 )
642,554  

472,816  

370,829  
843,645  

835,080  
8,565  
843,645  

8,550  
933  

—  
—  

1,309  
4,798  
5,000  

  $

  $

  $

  $
  $

  $
  $

  $
  $
  $

See accompanying notes to consolidated financial statements.

F-7

 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
 
   
 
   
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 
   
 
   
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 
 
   
 
   
 
   
 
   
 
   
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 
 
   
 
   
 
   
 
   
 
   
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 
 
   
 
   
 
   
   
   
   
 
 
   
 
   
 
   
 
   
 
   
 
   
   
   
   
 
 
   
 
   
 
   
 
   
 
   
 
   
   
   
   
 
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
 
Sarepta Therapeutics, Inc.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. ORGANIZATION AND NATURE OF BUSINESS

Sarepta Therapeutics, Inc. (together with its wholly-owned subsidiaries, “Sarepta” or the “Company”) is a commercial-stage biopharmaceutical 

company focused on helping patients through the discovery and development of unique RNA-targeted therapeutics, gene therapy and other genetic 
therapeutic modalities for the treatment of rare diseases. Applying its proprietary, highly-differentiated and innovative technologies, and through 
collaborations with its strategic partners, the Company is developing potential therapeutic candidates for a broad range of diseases and disorders, including 
Duchenne muscular dystrophy (“Duchenne”), Limb-girdle muscular dystrophies (“LGMDs”) and other neuromuscular and central nervous system (“CNS”) 
disorders. 

The Company's products in the U.S., EXONDYS 51 (eteplirsen) Injection (“EXONDYS 51”), VYONDYS 53 (golodirsen) Injection 

(“VYONDYS 53”) and AMONDYS 45 (casimersen) Injection (“AMONDYS 45”), were granted accelerated approval by the U.S. Food and Drug 
Administration (the “FDA”) on September 19, 2016, December 12, 2019 and February 25, 2021, respectively. Indicated for the treatment of Duchenne in 
patients who have a confirmed mutation of the dystrophin gene that is amenable to exon 51, exon 53 and exon 45 skipping, respectively, EXONDYS 51, 
VYONDYS 53 and AMONDYS 45 use the Company’s phosphorodiamidate morpholino oligomer (“PMO”) chemistry and exon-skipping technology to 
skip exon 51, exon 53 and exon 45 of the dystrophin gene. Exon skipping is intended to promote the production of an internally truncated but functional 
dystrophin protein.

As of December 31, 2021, the Company had approximately $2,125.8 million of cash, cash equivalents and investments, consisting of $2,115.9 
million of cash and cash equivalents and $9.9 million of restricted cash and investments. The Company believes that its balance of cash, cash equivalents 
and investments as of December 31, 2021 is sufficient to fund its current operational plan for at least the next twelve months, though it may pursue 
additional cash resources through public or private debt and equity financings, seek funded research and development arrangements and additional 
government contracts and establish collaborations with or license its technology to other companies.

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND RECENT ACCOUNTING PRONOUNCEMENTS

Basis of Presentation

The accompanying consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in 
the U.S. (“U.S. GAAP”), reflect the accounts of Sarepta Therapeutics, Inc. and its wholly-owned subsidiaries. All intercompany transactions between and 
among its consolidated subsidiaries have been eliminated. Management has determined that the Company operates in one segment: discovering, 
developing, manufacturing and delivering therapies to patients with rare diseases. The Company’s CEO, as the chief operating decision-maker, manages 
and allocates resources to the operations of the Company on a total company basis. The Company’s research and development organization is responsible 
for the research and discovery of new product candidates and supports development and registration efforts for potential future products. The Company’s 
supply chain organization manages the development of the manufacturing processes, clinical trial supply and commercial product supply. The Company’s 
commercial organization is responsible for commercialization of EXONDYS 51, VYONDYS 53 and AMONDYS 45 in the U.S. and internationally. The 
Company is supported by other back-office general and administration functions. Consistent with this decision-making process, the Company’s CEO uses 
consolidated, single-segment financial information for purposes of evaluating performance, forecasting future period financial results, allocating resources 
and setting incentive targets. In the opinion of the Company’s management, all adjustments of a normal recurring nature necessary for a fair presentation 
have been reflected.

Estimates and Uncertainties

The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and 
assumptions that affect the reported amounts of assets, liabilities, equity, revenue, expenses and the disclosure of contingent assets and liabilities. Actual 
results could differ from those estimates.

F-8

 
 
 
 
Fair Value Measurements

The Company has certain financial assets and liabilities that are recorded at fair value which have been classified as Level 1, 2 or 3 within the 

fair value hierarchy as described in the accounting standards for fair value measurements:

•

•

•

Level 1—quoted prices for identical instruments in active markets;

Level 2—quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not 
active, and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets; and

Level 3—valuations derived from valuation techniques in which one or more significant value drivers are unobservable.

The fair value of the majority of the Company’s financial assets is categorized as Level 1 within the fair value hierarchy. These assets include 

money market funds, and publicly traded debt and equity securities. For additional information related to fair value measurements, please read Note 5, Fair 
Value Measurements to the consolidated financial statements.

Cash Equivalents

Only investments that are highly liquid and readily convertible to cash and have original maturities of three months or less are considered cash 

equivalents.

Investments

Available-For-Sale Debt Securities

Available-for-sale debt securities are recorded at fair value and unrealized gains and losses are included in accumulated other comprehensive 

income in stockholder’s equity. Interest income and realized gains and losses are reported in other expense, net, on a specific identification basis.

Equity Investments

The Company’s equity investments include its investments in a publicly traded biotechnology company and several privately held biotechnology 

companies and are included in other non-current assets in the Company’s consolidated balance sheets. The equity investment in the publicly traded 
biotechnology company has a readily determinable fair value and is carried at fair value. The equity investments in the privately held biotechnology 
companies do not have readily determinable fair values and are measured at cost less any impairment, plus or minus changes resulting from observable 
price changes for the identical or a similar investment of the same issuer. Any change in the valuation of equity investments is recorded as a gain or loss on 
the Company’s consolidated statements of operations and comprehensive loss.

Accounts Receivable 

The Company’s accounts receivable primarily arise from product sales. They are generally stated at the invoiced amount and do not bear interest. 

Revenues from product sales are recorded at the net sales price (transaction price), which includes estimates of variable consideration for which reserves 
are established and which result from Medicaid rebates, governmental chargebacks including Public Health Services (“PHS”) chargebacks, prompt pay 
discounts, co-pay assistance and distribution fees. These reserves are based on the amounts earned or to be claimed on the related sales and are classified as 
reductions of accounts receivable (if no payments are required of the Company) for PHS chargebacks, prompt pay discounts and certain distribution fees, 
or a current liability (if a payment is required of the Company) for Medicaid rebates, co-pay assistance and certain distribution fees.

The accounts receivable from product sales represents receivables due from the Company’s specialty distributor and specialty pharmacies in the 

U.S. as well as certain distributors in the European Union (“EU”), Brazil, Israel and the Middle East. The Company has had no historical write-offs of its 
accounts receivable and its payment terms range from 60 to 91 days for sales within the U.S. and 45 and 150 days for the majority of product sales outside 
the U.S. The Company monitors the financial performance and creditworthiness of its customers so that it can properly assess and respond to changes in 
the customers’ credit profiles or any specific issues. The Company provides reserves against trade receivables for expected credit losses that may result 
from a customer’s inability to pay. Amounts determined to be uncollectible are written-off against the established reserve. As of December 31, 2021, the 
credit profiles for the Company’s customers are deemed to be in good standing and an allowance for credit losses is not considered necessary.

F-9

 
Concentration of Credit Risk 

Financial instruments that potentially subject the Company to concentrations of credit risk consist of accounts receivable from customers and 

cash.   

Three individual customers accounted for 48%, 39% and 10% of net product revenues for the year ended December 31, 2021, 47%, 39% and 
11% for the year ended December 31, 2020, and 43%, 41% and 13% for the year ended December 31, 2019. Three individual customers accounted for 
41%, 41% and 10% of accounts receivable from product sales for the year ended December 31, 2021 and 45%, 41% and 9% for the year ended December 
31, 2020. As of December 31, 2021, the Company believes that such customers are of high credit quality.

As of December 31, 2021, the Company’s cash was concentrated at three financial institutions, which potentially exposes the Company to credit 

risks. However, the Company does not believe that there is significant risk of non-performance by the financial institutions.

Inventories

Inventories are stated at the lower of cost and net realizable value with cost determined on a first-in, first-out basis. The Company capitalizes 
inventory costs associated with products following regulatory approval when future commercialization is considered probable and the future economic 
benefit is expected to be realized. EXONDYS 51, VYONDYS 53 and AMONDYS 45 inventory used in clinical development programs is charged to 
research and development expense when the product enters the research and development process and no longer can be used for commercial purposes. 

The Company periodically analyzes its inventories for excess amounts or obsolescence and writes down obsolete or otherwise unmarketable 

inventory to its estimated net realizable value. Additionally, though the Company’s products are subject to strict quality control and monitoring which the 
Company performs throughout the manufacturing processes, certain batches or units of product may not meet quality specifications. Expense incurred 
related to excess inventory, obsolete inventory, or inventories that do not meet the Company's quality specifications are recorded as a component of cost of 
sales in the Company's consolidated statements of operations and comprehensive loss.

For products which are under development and have not yet been approved by regulatory authorities, purchased drug product is charged to 

research and development expense upon delivery. Delivery occurs when the inventory passes quality inspection and ownership transfers to the Company. 
Nonrefundable advance payments for research and development activities, including production of purchased drug product, are deferred and capitalized 
until the goods are delivered. If the Company does not expect the goods to be delivered or services to be rendered, the advanced payment capitalized will 
be charged to expense.

Property and Equipment

Property and equipment are initially recorded at cost, including the acquisition cost and all costs necessarily incurred to bring the asset to the 
location and working condition necessary for their intended use. The cost of normal, recurring or periodic repairs and maintenance activities related to 
property and equipment are expensed as incurred. The cost for planned major maintenance activities, including the related acquisition or construction of 
assets, is capitalized if the repair will result in future economic benefits. Interest costs incurred during the construction period of major capital projects are 
periodically reviewed, and if determined to be material, capitalized until the asset is ready for its intended use, at which point the interest costs are 
amortized as depreciation expense over the life of the underlying asset. 

The Company generally depreciates the cost of its property and equipment using the straight-line method over the estimated useful lives of the 

respective assets, which are summarized as follows:

Asset Category

Lab and manufacturing equipment
Office equipment
Software and computer equipment
Furniture and fixtures

Leasehold improvements

Land improvements
Land
Building and improvements
Construction in progress

Useful lives

  5 years
  5 years
  3 - 5 years
  7 years
  Lesser of the useful life or the term of
  25 years
  Not depreciated
  30 years
  Not depreciated until put into service

   the respective lease

F-10

 
  
 
 
Intangible assets

The Company’s intangible assets consist of in-licensed rights, patent costs and software licenses, which are stated in the Company’s consolidated 

balance sheets, net of accumulated amortization and impairments, if applicable. 

The in-licensed rights primarily relate to agreements with BioMarin Pharmaceutical, Inc. (“BioMarin”) and the University of Western Australia 

(“UWA”). The in-licensed rights are being amortized on a straight-line basis over the remaining life of the related patents because the life of the related 
patents reflects the expected time period that the Company will benefit from the in-licensed rights. 

Patent costs consist primarily of external legal costs, filing fees incurred to file patent applications and renewal fees on proprietary technology 
developed or licensed by the Company. Patent costs associated with applying for a patent, being issued a patent and annual renewal fees are capitalized. 
Costs to defend a patent and costs to invalidate a competitor’s patent or patent application are expensed as incurred. Patent costs are amortized on a 
straight-line basis over the shorter of the estimated economic lives or the initial term of the patents, which is generally 20 years. 

Impairment of Long-Lived Assets

Long-lived assets held and used by the Company, intangible assets with definite lives and right of use (“ROU”) assets are reviewed for 
impairment whenever events or circumstances indicate that the carrying amount of assets may not be recoverable. The Company evaluates recoverability of 
assets to be held and used by comparing the carrying amount of an asset to future net undiscounted cash flows to be generated by the asset. If the asset is 
considered to be impaired, the impairment to be recognized is measured as the amount by which the carrying amount of the assets exceeds the fair value of 
the assets. Such reviews assess the fair value of the assets based upon estimates of future cash flows that the assets are expected to generate.

Convertible Debt 

As a result of adopting ASU 2020-06, “Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – 
Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity”, the Company 
accounts for the liability and equity components of convertible debt instruments that can be settled in cash as a single liability measured at its amortized 
cost, as long as no other features require bifurcation and recognition as derivatives under ASC Topic 815, Derivatives and Hedging (“ASC 815”). 
Simultaneously with the issuance of the 2024 Notes (defined below) in November 2017, the Company bought capped call options from certain 
counterparties to minimize the impact of potential dilution upon conversion. The premium for the capped call options was recorded as additional paid-in 
capital. For additional information related to the convertible debt transactions, please read Note 13, Indebtedness to the consolidated financial statements.

Revenue Recognition 

The Company recognizes revenue when a customer obtains control of promised goods or services, in an amount that reflects the consideration 

which the Company expects to receive in exchange for the goods or services provided. To determine revenue recognition for arrangements within the scope 
of ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”), the Company performs the following five steps: (1) identify the contract with the 
customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance 
obligations in the contract; and (5) recognize revenue when or as the Company satisfies a performance obligation. The Company only applies the five-step 
model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods or services it transfers or 
provides to the customer. At contract inception, the Company assesses the goods or services promised within each contract and determines those that are 
performance obligations, and assesses whether each promised good or service is distinct. The Company then recognizes as revenue the amount of the 
transaction price that is allocated to the respective performance obligation when or as the performance obligation is satisfied. The only performance 
obligation in the Company’s contracts with customers is to timely deliver drug products to the customer’s designated location.

Product revenues

The Company distributes its products principally through its customers. The customers subsequently resell the products to patients and health 

care providers. The Company provides no right of return to the customers except in cases of shipping error or product defect. Product revenues are 
recognized when the customers take control of the products, which typically occurs upon delivery to the customers. For the years ended December 31, 
2021, 2020 and 2019, the majority of the product revenues recognized were generated by the specialty distributor and specialty pharmacies in the U.S.

F-11

 
 
Variable Consideration

Product revenues are recorded at the net sales price (transaction price) which includes estimated reserves for variable consideration, such as 

Medicaid rebates, governmental chargebacks, including PHS chargebacks, prompt payment discounts, co-pay assistance and distribution fees. These 
reserves reflect the Company’s best estimates of the amount of consideration to which it is entitled based on the terms of the contracts. Additional details 
relating to variable consideration follows:

•

•

•

•

•

Medicaid rebates relate to the Company’s estimated obligations to states under established reimbursement arrangements. Medicaid rebate 
reserves are recorded in the same period the related revenue is recognized, resulting in a reduction of product revenue and the 
establishment of a liability which is included in accrued expenses.

Governmental chargebacks, including PHS chargebacks, relate to the Company’s estimated obligations resulting from contractual 
commitments to sell products to qualified healthcare providers at prices lower than the list prices that the Company charges to 
wholesalers. The wholesaler charges the Company for the difference between what the wholesaler pays for the products and the ultimate 
selling price to the qualified healthcare providers. Chargeback reserves are recorded in the same period the related revenue is recognized, 
resulting in a reduction of product revenue and accounts receivable. Chargeback amounts are generally determined at the time of resale to 
the qualified healthcare provider from the wholesaler, and the Company generally issues credits for such amounts within a few weeks of 
receiving notification of resale from the wholesaler.

Prompt payment discounts relate to the Company’s estimated obligations for credits to be granted to specialty pharmacies for remitting 
payment on their purchases within established incentive periods. Reserves for prompt payment discounts are recorded in the same period 
the related revenue is recognized, resulting in a reduction of product revenue and accounts receivable.

Co-pay assistance relates to financial assistance provided to qualified patients, whereby the Company may assist them with prescription 
drug co-payments required by the patient’s insurance provider. Reserves for co-pay assistance are recorded in the same period the related 
revenue is recognized, resulting in a reduction of product revenue and the establishment of a liability which is included in accrued 
expenses.

Distribution fees relate to fees paid to customers in the distribution channel that provide the Company with inventory management, data 
and distribution services and are generally accounted for as a reduction of revenue. To the extent that the services received are distinct 
from the Company’s sale of products to the customers, these payments are accounted for as selling, general and administrative expenses. 
Reserves for distribution fees result in an increase in a liability if payments are required of the Company or a reduction of accounts 
receivable if no payments are required of the Company. 

Collaboration revenue

The Company’s collaboration revenue is primarily generated from its collaboration arrangement with F. Hoffman-La Roche Ltd. (“Roche”). For 
more information, please read Note 3, Collaboration and License Agreements. At the inception of a collaboration arrangement, the Company first assesses 
whether the contractual arrangement is within the scope of ASC Topic 808, Collaborative Arrangements (“ASC 808”) to determine whether the 
arrangement involves a joint operating activity and involves two (or more) parties that are both active participants in the activity and exposed to significant 
risks and rewards dependent on the commercial success of such activity. Then the Company determines whether the collaboration arrangement in its 
entirety represents a contract with a customer as defined by ASC 606. If only a portion of the collaboration arrangement is potentially with a customer, the 
Company applies the distinct good or service unit-of-account guidance in ASC 606 to determine whether there is a unit of account that should be accounted 
for under ASC 606. For the units of account in the collaboration arrangement that do not represent a vendor-customer relationship, the Company will (i) 
consider applying other GAAP, including by analogy, or (ii) if there is no appropriate analogy, consistently apply a reasonable and rational accounting 
policy election. 

In general, by analogy to ASC 606, the Company identifies the performance obligations within the collaboration arrangement and identifies and 

allocates the transaction price the Company expects to receive on a relative standalone selling price basis to each performance obligation. Variable 
consideration, consisting of development and regulatory milestones, will be included in the transaction price only if the Company expects to receive such 
consideration and if it is probable that the inclusion of the variable consideration will not result in a significant reversal in the cumulative amount of 
revenue recognized under the arrangement. Sales-based royalty and milestone payments are excluded from the transaction price the Company expects to 
receive until the underlying sales occur because the license to the Company’s intellectual property is deemed to be the predominant item to which the 
royalties or milestones relate as it is the primary driver of value in its collaboration arrangement. 

F-12

 
For the recognition of revenue associated with each performance obligation, if the Company determines ASC 606 is not appropriate to apply by 

analogy, the Company will apply a reasonable, rational and consistently applied accounting policy election to faithfully depict the transfer of services to the 
collaboration partner over the estimated performance period. Up-front payments from a collaboration partner are recognized as deferred revenue when 
received and recognized as revenue over the estimated performance period. Reimbursement payments from a collaboration partner associated with cost 
sharing provisions in a collaboration arrangement are recognized as the related expense is incurred and classified as an offset to operating expenses.

Valuation of Product Options

The Company's collaboration arrangements may contain options which provide the collaboration partner with the right to obtain additional 
licenses. If an arrangement contains product options, by analogy to ASC 606, the Company evaluates the product options to determine whether they 
represent material rights, which may include options to acquire additional goods or services for free or at a discount. If the customer options are determined 
to represent material rights, they are recognized as a separate performance obligation at inception of the arrangement. The Company allocates a portion of 
the transaction price of the collaboration arrangement to material rights based on the relative standalone selling price. Amounts allocated to material rights 
are not recognized as revenue until related options are exercised or expire. Key assumptions to determine the standalone selling price of product options in 
a collaboration arrangement include, but are not limited to, forecasted revenues, development timelines, incremental costs related to the arrangement, 
discount rates and likelihood of technical and regulatory success.

Research and Development

Research and development expenses consist of costs associated with research activities as well as those with the Company’s product 

development efforts, conducting pre-clinical trials, clinical trials and manufacturing activities. Research and development expenses are expensed as 
incurred. Up-front fees and milestones paid to third parties in connection with technologies which have not reached technological feasibility and do not 
have an alternative future use are expensed when incurred. 

Direct research and development expenses associated with the Company’s programs include clinical trial site costs, clinical manufacturing costs, 

costs incurred for consultants and other external services, such as data management and statistical analysis support and materials and supplies used in 
support of clinical programs. Indirect costs of the Company’s clinical programs include salaries, stock-based compensation and an allocation of its facility 
and technology costs.

When third-party service providers’ billing terms do not coincide with the Company’s period-end, the Company is required to make estimates of 

its obligations to those third parties, including clinical trial and pharmaceutical development costs, contractual services costs and costs for supply of its 
drug candidates, incurred in a given accounting period and record accruals at the end of the period. The Company bases its estimates on its knowledge of 
the research and development programs, services performed for the period, past history for related activities and the expected duration of the third-party 
service contract, where applicable.

Stock-Based Compensation

The Company’s stock-based compensation programs include stock options, restricted stock awards (“RSAs”), restricted stock units (“RSUs”) 

and an employee stock purchase program (“ESPP”). The Company accounts for stock-based compensation using the fair value method.

The fair value of stock options are estimated on the date of grant using the Black-Scholes-Merton option-pricing model. The fair values of RSAs 

and RSUs are based on the fair market value of the Company’s common stock on the date of the grant. The fair value of stock awards, with consideration 
given to estimated forfeitures, is recognized as stock-based compensation expense on a straight-line basis over the vesting period of the grants. For stock 
awards with performance-vesting conditions, the Company does not recognize compensation expense until it is probable that the performance-vesting 
condition will be achieved.

Additionally, the Company granted its CEO options with service and market conditions. A market condition relates to the achievement of a 

specified price of the Company’s common stock, a specified amount of intrinsic value indexed to the Company’s common stock or a specified price of the 
Company’s common stock in terms of other similar equity shares. The grant date fair value for the options with service and market conditions is determined 
by a lattice model with Monte Carlo simulations and is recognized as stock-based compensation expense on a straight-line basis over the service period.

Under the Company’s ESPP, participating employees purchase common stock through payroll deductions. The purchase price is equal to 85% of 
the lower of the closing price of the Company’s common stock on the first business day and the last business day of the relevant purchase period. The fair 
value of stock purchase rights is estimated using the Black-Scholes-Merton option-pricing model. The fair value of the look-back provision with the 15% 
discount is recognized on a graded-vesting basis as stock-based compensation expense over the purchase period.

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Income Taxes

The Company follows the asset and liability method of accounting for income taxes, which requires the recognition of deferred tax assets and 

liabilities for expected future tax consequences attributable to differences between the consolidated financial statement carrying amounts of existing assets 
and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which the 
differences are expected to reverse. A valuation allowance is recorded to reduce the net deferred tax asset to zero when it is more likely than not that the net 
deferred tax asset will not be realized. 

The Company recognizes the effect of income tax positions only if those positions are more likely than not of being sustained upon an 
examination. The amount of the benefit that may be recognized in the financial statements is the largest amount that has a greater than 50% likelihood of 
being realized. The Company recognizes interest and penalties related to uncertain tax positions within income tax expense.

It is the intention of the Company to reinvest the earnings of its non-U.S. subsidiaries in those operations and not to repatriate the earnings to the 

U.S. Accordingly, the Company does not provide for deferred taxes on the excess of the financial reporting over the tax basis in its investments in foreign 
subsidiaries as they are considered permanent in duration. 

Leases

At the inception of an arrangement, the Company determines whether the arrangement is or contains a lease based on the unique facts and 

circumstances present in the arrangement. Leases with a term greater than 12 months are recognized on the consolidated balance sheets as right-of-use 
(“ROU”) assets and short-term and long-term lease liabilities, as applicable. The Company has elected not to recognize leases with terms of 12 months or 
less on the consolidated balance sheets. The Company typically only includes an initial lease term in its assessment of a lease arrangement. Options to 
renew a lease are not included in the Company’s assessment unless there is reasonable certainty that the Company will renew. The Company monitors its 
plans to renew its leases no less than on a quarterly basis. In addition, the Company’s lease agreements generally do not contain any residual value 
guarantees or restrictive covenants.

Operating lease liabilities and their corresponding ROU assets are recorded based on the present value of future lease payments over the 

expected remaining lease term at lease commencement. The initial measurement of the lease liability is determined based on the future lease payments, 
which may include lease payments that depend on an index or a rate (such as the consumer price index or other market index). The Company initially 
measures payments based on an index or rate by using the applicable rate at lease commencement and subsequent changes in such rates are recognized as 
variable lease costs. Variable payments that do not depend on a rate or index are not included in the lease liability and are recognized as they are incurred. 
Lease cost for operating leases is recognized on a straight-line basis over the lease term as an operating expense with unrecognized variable lease payments 
recognized as incurred. Certain adjustments to the ROU asset may be required for items such as lease prepayments or incentives received. The interest rate 
implicit in lease contracts is typically not readily determinable. As a result, the Company utilizes its incremental borrowing rate, which reflects the fixed 
rate at which the Company could borrow on a collateralized basis the amount of the lease payments in the same currency, for a similar term, in a similar 
economic environment. Components of a lease are bifurcated between lease components and non-lease components. The fixed and in-substance fixed 
contract consideration identified is then allocated based on the relative standalone price to the lease and non-lease components. However, ASC Topic 842, 
Leases, provides entities with a practical expedient that allows an accounting policy election to not separate lease and non-lease components by class of 
underlying asset. In using this expedient, entities would account for each lease component and the related non-lease component together as a single 
component. For new and amended real estate leases beginning after January 1, 2019, the Company elected to account for the lease and non-lease 
components together for existing classes of underlying assets and allocates the contract consideration to the lease component only. In contrast, the 
Company does not apply the practical expedient for leases embedded in manufacturing and supply agreements with certain of its contract manufacturing 
organizations and has instead allocated contract consideration between the lease and non-lease components based on their relative standalone price. 

Embedded Derivatives

The Company evaluates certain of its financial and business development transactions to determine if embedded components of these contracts 

meet the definition of derivative under ASC 815. In general, embedded derivatives are required to be bifurcated from the host instrument if (i) the 
embedded feature is not clearly and closely related to the host contract and (ii) the embedded feature, if considered a freestanding instrument, meets the 
definition of a derivative. The embedded derivative is reported on the consolidated balance sheets at its fair value. Any change in fair value, as determined 
at each measurement period, is recorded as a component of the consolidated statements of operations and comprehensive loss.

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Contingent Consideration

Certain of the Company’s license and collaboration agreements include future payments that are contingent upon the receipt, or receipt and 

subsequent sale, of a Priority Review Voucher (“PRV”). The Company has concluded that these contingent payments represent embedded derivatives. The 
Company records a liability for such contingent payments at fair value on the date the agreements are effective. The Company estimates the fair value of 
contingent consideration derivatives through a valuation model that includes an income approach based on the probability-weighted expected cash flows 
that incorporated industry-based probability adjusted assumptions relating to the achievement of the milestone and thus the likelihood of making the 
payments. Changes in the fair value of the contingent consideration derivatives can result from changes to one or multiple assumptions, including 
adjustments to the discount rates, the assumed development timeline and the probability of achievement of certain regulatory milestones. The Company 
revalues its contingent consideration derivatives upon a material change to one or more of the assumptions discussed above. Changes in the fair value of 
the Company’s contingent consideration derivatives are recognized in the Company’s consolidated statements of operations and comprehensive loss. Such 
changes are classified as other income (loss) which corresponds to the classification of any gain recognized upon the actual sale of a PRV.

Commitments and Contingencies

The Company records liabilities for legal and other contingencies when information available to the Company indicates that it is probable that a 

liability has been incurred and the amount of loss can be reasonably estimated. Legal costs in connection with legal and other contingencies are expensed as 
costs are incurred.

Recent Accounting Pronouncements

Recently adopted

In August 2020, the Financial Accounting Standards Board (“FASB”) issued ASU 2020-06, “Debt - Debt with Conversion and Other Options 

(Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and 
Contracts in an Entity's Own Equity.” This ASU simplifies the complexity associated with applying U.S. GAAP for certain financial instruments with 
characteristics of liabilities and equity. More specifically, the amendments focus on the guidance for convertible instruments and derivative scope 
exceptions for contracts in an entity’s own equity. Under ASU 2020-06, the embedded conversion features are no longer separated from the host contract 
for convertible instruments with conversion features that are not required to be accounted for as derivatives under ASC 815, or that do not result in 
substantial premiums accounted for as paid-in capital. Consequently, a convertible debt instrument, such as the Company’s senior notes due on November 
15, 2024 (the “2024 Notes”), will be accounted for as a single liability measured at its amortized cost, as long as no other features require bifurcation and 
recognition as derivatives. The new guidance also requires the if-converted method to be applied for all convertible instruments and requires additional 
disclosures. This guidance is required to be adopted by January 1, 2022, and early adoption is permitted, but no earlier than fiscal years beginning after 
December 15, 2020. The Company elected to early adopt this guidance on January 1, 2021, using the modified retrospective method. Under this transition 
method, the cumulative effect of the accounting change removed the impact of recognizing the equity component of the Company’s convertible notes (at 
issuance and the subsequent accounting impact of additional interest expense from debt discount amortization). The cumulative effect of the accounting 
change as of January 1, 2021 increased the carrying amount of the convertible notes by $96.8 million, reduced accumulated deficit by $60.2 million and 
reduced additional paid-in capital by $157.0 million. Interest expense of the 2024 Notes will be lower as a result of adoption of this guidance. The if-
converted method for such instruments will be used to compute diluted net earnings per share if and when profitability is achieved. As a result of the 
adoption of this guidance, interest expense and net loss was reduced by $22.4 million, or $0.28 per share, for the year ended December 31, 2021.  

In December 2019, the FASB issued ASU 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes”, which is 
intended to simplify the accounting for income taxes. This ASU removes certain exceptions to the general principles in Topic 740 and clarifies and amends 
existing guidance to improve consistent application. The new guidance was effective beginning January 1, 2021. The adoption of this guidance did not 
have a material effect on the Company’s consolidated financial statements. 

3. LICENSE AND COLLABORATION AGREEMENTS

F. Hoffman-La Roche Ltd.

On December 21, 2019, the Company entered into a license, collaboration and option agreement with Roche and a stock purchase agreement (the 

“Roche Agreement”) with Roche, providing Roche with exclusive commercial rights to SRP-9001, the Company’s investigational gene therapy for 
Duchenne, outside the U.S. The Company retains all rights to SRP-9001 in the U.S. and will perform all development activities within the joint global 
development plan necessary to obtain and maintain regulatory approvals for SRP-9001 in the U.S. and the EU, unless otherwise agreed to by the parties. 
Further: (i) research and development expenses incurred under the joint global development plan will be equally shared between the Company and Roche, 
(ii) Roche is solely responsible for all costs incurred in connection with any development activities (other than those within the joint global development 
plan) that are necessary to obtain or maintain regulatory approvals outside the U.S, and (iii) the Company will continue to be 

F-15

 
 
responsible for the manufacturing of clinical and commercial supplies of SRP-9001. The Company has also granted Roche options to acquire ex-U.S. rights 
to certain future Duchenne-specific programs (the “Options”) in exchange for separate option exercise payments, milestone and royalty considerations, and 
cost sharing provisions. The agreement became effective on February 4, 2020. The Roche Agreement is governed by a joint steering committee (“JSC”) 
formed by representatives from Roche and the Company. The JSC, among other activities, manages the overall strategic alignment between the parties, 
approves any material update to the joint global development plan and budget and oversees the operations of the subcommittees. 

The Company received an aggregate of approximately $1.2 billion in cash consideration from Roche, consisting of an up-front payment and an 

equity investment in the Company. The Company may receive up to $1.7 billion in development, regulatory and sales milestones related to SRP-9001. 
Upon commercialization, the Company is also eligible to receive tiered royalty payments based on net sales. Of the $1.2 billion cash received from Roche, 
(i) $312.1 million, net of issuance costs, was allocated to the approximately 2.5 million shares of the Company’s common stock issued to Roche based on 
the closing price when the shares were issued, (ii) $485.0 million was allocated to the Options, and (iii) $348.7 million was allocated to a single, combined 
performance obligation (“Combined Performance Obligation”) comprised of: (i) the license of IP relating to SRP-9001 transferred to Roche, (ii) the related 
research and development services provided under the joint global development plan, (iii) the services provided to manufacture clinical supplies of SRP-
9001, and (iv) the Company’s participation in the JSC, because the Company determined that the license of IP and related activities were not capable of 
being distinct from one another. 

The value assigned to the Options is reflected as deferred revenue and will not be recognized until an option is either: (i) exercised by Roche, or 
(ii) expires. If exercised, the value will be aggregated with the option exercise price and recognized over the applicable performance period. If expired, the 
value will be recognized immediately. The Company recognizes revenue related to the Combined Performance Obligation on a straight-line basis over the 
expected performance period of the joint global development plan, which is expected to extend through the fourth quarter of 2023. Revenue relating to 
future development, regulatory and sales milestones will be recognized when the milestone is probable of achievement (which is typically when the 
milestone has occurred). Any royalties payable by Roche in the future will be recognized in the period earned.

For the years ended December 31, 2021 and 2020, the Company recognized $89.5 million and $84.2 million of collaboration and other revenues, 
respectively, the majority of which relates to the Combined Performance Obligation. As of December 31, 2021, the Company has total deferred revenue of 
$663.5 million associated with the Roche Agreement, of which $89.2 million is classified as current. Through 2021, no Options were exercised or expired. 
As such, deferred revenue related to the separate material rights for the Options remained unchanged at $485.0 million as of December 31, 2021 and 2020.

The costs associated with co-development activities performed under the Roche Agreement are included in operating expenses, with any 

reimbursement of costs by Roche reflected as a reduction of such expenses when the related expense is incurred. For the years ended December 31, 2021 
and 2020, costs reimbursable by Roche and reflected as a reduction to operating expenses were $90.5 million and $66.5 million, respectively. As of 
December 31, 2021, there was $18.6 million of collaboration receivable included in other current assets. 

Genethon

The Company entered into a sponsored research agreement in May 2017 and subsequently entered into a license and collaboration agreement 

with Genethon in November 2019 (the “Genethon Collaboration Agreement”) for Genethon’s micro-dystrophin gene therapy program for the treatment of 
Duchenne. The Genethon Collaboration Agreement grants the Company with exclusive rights in the majority of the world (primarily excluding the EU) to 
Genethon’s micro-dystrophin gene therapy products (“Genethon Products”) and other micro-dystrophin gene therapy products (“Other Licensed 
Products”). The Company may be liable for up to $157.5 million and $78.8 million in development, regulatory and sales milestones for the Genethon 
Products and Other Licensed Products, respectively. Furthermore, upon commercialization, the Company will be required to make tiered royalty payments 
based on net sales of the Genethon Products and the Other Licensed Products. Under the Genethon Collaboration Agreement, a joint steering committee 
was established to plan, monitor and coordinate development activities for Genethon Products and Other Licensed Products. The Company and Genethon 
are responsible for 75% and 25%, respectively, of development costs related to both the Genethon Products and the Other Licensed Products. 

Upon signing the Genethon Collaboration Agreement, the Company made an up-front payment of $28.0 million, which was recorded as research 

and development expense in the Company’s consolidated statements of operations and comprehensive loss for the year ended December 31, 2019. 
Additionally, for the years ended December 31, 2021, 2020 and 2019, the Company recorded $11.7 million, $10.1 million and $9.0 million, respectively, of 
research and development expense related to reimbursable development costs incurred by Genethon for Genethon Products. For the year ended December 
31, 2021, the Company recorded $4.0 million of research and development expense related to milestone achievements. No additional development or 
regulatory milestones were deemed probable of being achieved and, accordingly, no additional expense has been recognized.

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StrideBio, Inc.

In November 2019, the Company entered into a collaboration and license agreement and a stock purchase agreement (collectively, the “StrideBio 

Agreements”) with StrideBio, Inc. (“StrideBio”). The StrideBio Agreements grant the Company exclusive worldwide licenses to develop, collaborate and 
commercialize StrideBio’s adeno-associated viral capsids for gene therapy with respect to multiple development targets, to which the Company will have 
the exclusive right to perform development activities (“Sarepta Development Targets”) and targets that the two parties will jointly develop through 
completion of Phase 1/2 clinical trials (“Joint Development Targets”). For Sarepta Development Targets and Joint Development Targets, respectively, the 
Company may be liable for up to $450.0 million and $835.0 million in development, regulatory and sales milestone payments per target. Additionally, upon 
commercialization, the Company may be required to make tiered royalty payments based on net sales of each target.

Upon signing the StrideBio Agreements, the Company made an up-front payment of $46.9 million, consisting of a cash payment of $17.5 million 

and 301,980 shares of the Company’s common stock delivered to StrideBio with a fair value of $29.4 million. The up-front payment was recorded as 
research and development expense in the Company’s consolidated statements of operations and comprehensive loss for the year ended December 31, 2019. 
As of December 31, 2021, no development or regulatory milestones were deemed probable of being achieved and, accordingly, no additional expense has 
been recognized. 

In March 2021, the Company participated in StrideBio’s Series B round of financing and purchased approximately 0.2 million shares of preferred 

stock. As of December 31, 2021, the equity investment in StrideBio’s Series B preferred stock was approximately $1.8 million. Please read Note 5, Fair 
Value Measurements for further information.

Myonexus Therapeutics

In April 2019, the Company completed its acquisition of Myonexus Therapeutics, Inc. (“Myonexus”), a clinical-stage gene therapy 

biotechnology company that was developing gene therapies for LGMD for $178.3 million. The Company may also be required to make up to $200.0 
million in additional payments to selling shareholders of Myonexus based on the achievement of certain sales-and regulatory- related milestones. The 
acquisition was accounted for as an asset acquisition as substantially all of the fair value of the gross assets acquired is concentrated in a group of similar 
identifiable assets (the five LGMD gene therapy programs). The Company determined that one regulatory-related milestone (not solely based on drug 
approval by the FDA) met the definition of a derivative and recorded a contingent consideration liability. As of December 31, 2021 and 2020, the 
contingent consideration liability was $42.0 million and $49.5 million, respectively. The changes in fair value are recorded as other expense in the 
Company’s consolidated statements of operations and comprehensive loss. Please read Note 5, Fair Value Measurements for further information on the 
change in fair value of the contingent consideration liability. 

Lysogene S.A.

In October 2018, the Company entered into a license and collaboration agreement to develop and commercialize LYS-SAF302, a gene therapy to 

treat Mucopolysaccharidosis type IIIA (“MPS IIIA”) as well as an equity investment agreement with Lysogene S.A. (“Lysogene”). Under the license and 
collaboration agreement, in addition to the payment of up-front fees, the Company may be liable for a total of $102.8 million in development, regulatory 
and sales milestones. Furthermore, the Company may be required to make tiered royalty payments based on net sales of the LYS-SAF302 product 
subsequent to its commercialization. Beginning January 1, 2020, the Company began to reimburse Lysogene for expenses incurred in connection with 
development activities of the MPS IIIA product candidate. As of December 31, 2021, the Company owns 1,140,728 shares of common stock issued by 
Lysogene and recorded $2.5 million of equity investment in Lysogene as an other non-current asset in the Company’s consolidated balance sheets.

The Company sent a termination notice to Lysogene on January 11, 2022 to notify them of the Company's intent to terminate the license and 

collaboration agreement. The termination will become effective July 11, 2022. The Company does not have to pay any early termination penalties to 
Lysogene but is liable for certain research and development reimbursements incurred in the six months following termination, which are not expected to be 
material. As of December 31, 2021, there was no accounting impact as a result of the termination of the license and collaboration agreement because the 
notice of termination did not occur until subsequent to year-end.

Lacerta Therapeutics

In August 2018, the Company entered into a license, development and option agreement (the “Lacerta License Agreement”) and a Series A 
Preferred Stock Purchase Agreement (the “Stock Purchase Agreement”) with Lacerta Therapeutics, Inc. (“Lacerta”). Pursuant to the Lacerta License 
Agreement, the Company licensed exclusive worldwide rights to develop, manufacture and commercialize a pre-clinical Pompe product candidate (the 
“Pompe License”). Lacerta also granted the Company exclusive options to enter into exclusive license agreements to develop, manufacture and 
commercialize other gene therapy product candidates for 

F-17

 
 
Sanfilipo syndrome and L-Amino Acid Decarboxylase Deficiency for additional consideration of $42.0 million (collectively, the “Options”) when (and if) 
the Options are exercised. Additionally, the Company may be liable for up to approximately $44.0 million in development, regulatory and sales milestones 
associated with the Pompe License and may be required to make tiered royalty payments based on net sales of the Pompe product subsequent to its 
commercialization. Under the Stock Purchase Agreement, the Company purchased approximately 4.5 million shares of Series A preferred stock issued by 
Lacerta. 

Under the agreements, the Company made an up-front payment of $38.0 million to Lacerta, of which $30.0 million was allocated to the Series A 

preferred stock investment and recorded as an other non-current asset in the accompanying consolidated balance sheets. Changes in the carrying value of 
the investment are reported as a component of earnings whenever there are triggering events that warrant impairment or observable price changes in orderly 
transactions for identical or similar investments of Lacerta in the future. For the years ended December 31, 2021, 2020 and 2019, the Company did not 
record any changes in carrying value of the investment as Lacerta did not issue identical or similar shares during the corresponding periods. As of 
December 31, 2021, no development or regulatory milestones were deemed probable of being achieved and, accordingly, no additional expense has been 
recognized.

Nationwide Children’s Hospital 

In December 2016, the Company entered into an exclusive option agreement with Nationwide Children’s Hospital (“Nationwide”) from which 

the Company obtained an exclusive right to acquire a worldwide license of the micro-dystrophin gene therapy technology for Duchenne and Becker 
muscular dystrophy. In October 2018, the Company exercised the option and entered into a license agreement with Nationwide, which granted the 
Company exclusive worldwide rights to develop, manufacture and commercialize a micro-dystrophin gene therapy product candidate. In July 2021, the 
Company entered into an agreement with Nationwide to settle a dispute relating to a sublicense payment owed by the Company resulting from the up-front 
payment received from Roche under the Roche Agreement. The total sublicense payment payable to Nationwide under the agreement is $38.0 million, 
which was paid in July 2021. Approximately $9.3 million of this amount was previously expensed during the year ended December 31, 2020 with the 
remaining $28.7 million expensed during the year ended December 31, 2021. The expense relating to this payment is recognized to research and 
development expense. As a result of this payment, the Company has no further financial obligations to Nationwide resulting from the up-front payment 
received under the Roche Agreement. As of December 31, 2021, no development or regulatory milestones were deemed probable of being achieved and, 
accordingly, no additional in-licensed rights or expenses have been recognized. 

BioMarin Pharmaceutical, Inc.

In July 2017, the Company and UWA entered into a settlement agreement with BioMarin. On the same day, the Company entered into a license 
agreement, which was subsequently amended in April 2019, with BioMarin and Academisch Ziekenhuis Leiden (“AZL”) (collectively with the Company, 
UWA and BioMarin, the “Settlement Parties”). Under these agreements and amendment, BioMarin agreed to provide the Company with an exclusive 
license to certain intellectual property with an option to convert the exclusive license into a co-exclusive license and the Settlement Parties agreed to stop 
most existing efforts to continue with ongoing litigation and opposition and other administrative proceedings concerning BioMarin’s intellectual property. 
BioMarin is also eligible to receive tiered royalty payments, ranging from 4% to 8%, based on the net sales for the three products and product candidates. 

In November 2021, the Company entered into a second settlement agreement and second amendment to the license agreement (the “Second 

Amendment”), which waived certain future milestone payments and altered royalty payment terms of the agreement. Under the Second Amendment, the 
Company may be liable for up to approximately $50.0 million in regulatory milestones for eteplirsen, casimersen and golodirsen. In addition, on and after 
July 1, 2022, the tiered royalty payments will range from 4% to 5%. The royalty terms under the license agreement will expire in March 2024 in the U.S., 
December 2024 in the EU and no later than December 2024 in other countries.

As a result of execution of the license agreement with BioMarin, the Company recorded an in-licensed right intangible asset of $6.6 million in its 

consolidated balance sheets as of December 31, 2017, representing the fair value of the U.S. license to BioMarin’s intellectual property. The intangible 
asset is being amortized on a straight-line basis over the remaining life of the patent and has a carrying value of $3.2 million as of December 31, 2021. 

The FDA approval of AMONDYS 45 and VYONDYS 53 in February 2021 and December 2019, respectively, resulted in settlement charges to 
BioMarin of $10.0 million during each period and each were expensed as incurred. For the years ended December 31, 2021, 2020 and 2019, the Company 
recognized royalty expense of $31.4 million, $23.2 million and $19.4 million, respectively. As of December 31, 2021, no other regulatory milestones were 
deemed probable of being achieved and, accordingly, no additional in-licensed rights or expenses have been recognized. 

University of Western Australia

In April 2013, the Company and UWA entered into an amendment to an existing exclusive license agreement relating to the treatment of 

Duchenne by inducing the skipping of certain exons. The agreement was further amended in June 2016. Under the amended agreement, the Company may 
be obligated to make payments to UWA totaling up to $26.0 million upon the achievement of 

F-18

 
certain development, regulatory and sales milestones. Additionally, the Company is required to pay a low-single-digit percentage royalty on net sales of 
products covered by issued patents licensed under the agreements with UWA. Corresponding to the FDA approval of EXONDYS 51 in 2016, VYONDYS 
53 in December 2019, and AMONDYS 45 in February 2021, the Company recorded milestone payments of $1.0 million, $0.5 million and $0.5 million as 
in-licensed right intangible assets in its consolidated balance sheets, respectively. Each in-licensed right is being amortized on a straight-line basis over the 
remaining life of the relevant patents and have a combined carrying value of $1.2 million as of December 31, 2021. For the years ended December 31, 
2021, 2020 and 2019, the Company recorded $7.7 million, $5.7 million and $3.5 million in royalty expense, respectively, which is included in cost of sales, 
related to agreements with UWA. As of December 31, 2021, no other development, regulatory or sales milestones were deemed probable of being achieved 
and, accordingly, no additional in-licensed rights or expenses have been recognized.

Research and Option Agreements

The Company has research and option agreements with third parties in order to develop various technologies and biologics that may be used in 

the administration of the Company’s genetic therapeutics. The agreements generally provide for research services related to pre-clinical development 
programs, and options to license the technology for clinical development. Prior to the options under these agreements being executed, the Company may be 
required to make up to $11.0 million in research milestone payments. Under these agreements, there are $187.0 million in potential option payments to be 
made by the Company upon the determination to exercise the options. Additionally, if the options for each agreement are executed, the Company would 
incur additional contingent obligations and may be required to make development, regulatory, and sales milestone payments and tiered royalty payments 
based on the sales of the developed products upon commercialization. For the year ended December 31, 2021, the Company recognized $3.0 million of 
research milestone expenses, with no similar activity for the years ended December 31, 2020 and 2019. As of December 31, 2021, the Company has not 
exercised any options nor have any additional research milestone payments become probable of occurring.  

Milestone Obligations

Including the agreements discussed above, the Company has license and collaboration agreements in place for which it could be obligated to pay, 

in addition to the payment of up-front fees upon execution of the agreements, certain milestone payments as a product candidate proceeds from the 
submission of an investigational new drug application through approval for commercial sale and beyond. As of December 31, 2021, the Company may be 
obligated to make up to $4.0 billion of future development, regulatory, commercial, and up-front royalty payments associated with its collaboration and 
license agreements. These obligations exclude potential future option and milestone payments for options that have yet to be exercised within agreements 
entered into by the Company as of December 31, 2021, which are discussed above. For the years ended December 31, 2021, 2020 and 2019, the Company 
recognized approximately $50.3 million, $47.3 million, $113.2 million relating to certain up-front, milestone, settlement and other payments as research 
and development expense, respectively, under these agreements. The Company is also obligated to pay royalties on net sales of certain of its products 
related to these collaboration and license agreements. The royalty rates range from the low-single-digit to high teens percentages for both inside and outside 
the U.S.  

4. GAIN FROM SALE OF PRIORITY REVIEW VOUCHER

In February 2021, the Company entered into an agreement to sell the rare pediatric disease PRV (the “AMONDYS 45 PRV”) it received from the 
FDA in connection with the approval of AMONDYS 45. Following the termination of the applicable waiting period under the Hart-Scott-Rodino Antitrust 
Improvements Act of 1976, as amended, in April 2021, the Company completed its sale of the AMONDYS 45 PRV and received proceeds of $102.0 
million, with no commission costs, which was recorded as a gain from sale of the PRV as it did not have a carrying value at the time of the sale.

In February 2020, the Company entered into an agreement to sell the rare pediatric disease PRV (the “VYONDYS 53 PRV”) it received from the 

FDA in connection with the approval of VYONDYS 53. Following the early termination of the applicable waiting period under the Hart-Scott-Rodino 
Antitrust Improvements Act of 1976, as amended, in March 2020, the Company completed its sale of the VYONDYS 53 PRV and received proceeds of 
$108.1 million, net of commission, which was recorded as a gain from sale of the PRV as it did not have a carrying value at the time of the sale.

F-19

 
5. FAIR VALUE MEASUREMENTS

There were no transfers between Levels 1, 2 and 3 during the year ended December 31, 2021. The tables below present information about the 

Company’s financial assets and liabilities that are measured and carried at fair value and indicate the level within the fair value hierarchy of the valuation 
techniques it utilizes to determine such fair value: 

Assets
Money market funds
Strategic equity investments
Certificates of deposit
Total assets

Liabilities
Contingent consideration
Total liabilities

Assets
Money market funds
Government and government agency 
   bonds
Strategic equity investments
Certificates of deposit
Total assets

Liabilities
Contingent consideration
Total liabilities

  $

  $

  $
  $

  $

  $

  $
  $

Fair Value Measurement as of December 31, 2021

Total

Level 1

Level 2

Level 3

1,562,358  
34,892  
250  
1,597,500  

  $

  $

(in thousands)

1,562,358     $
2,480      
250      
1,565,088     $

43,600  
43,600  

  $
  $

—     $
—     $

—     $
—      
—      
—     $

—     $
—     $

—  
32,412  
—  
32,412  

43,600  
43,600  

Fair Value Measurement as of December 31, 2020

Total

Level 1

Level 2

Level 3

(in thousands)

629,440  

  $

629,440     $

1,037,981  
38,799  
250  
1,706,470  

  $

1,037,981  

3,699      
250      
1,671,370     $

50,800  
50,800  

  $
  $

—     $
—     $

—     $

—  
—      
—      
—     $

—     $
—     $

—  

—  
35,100  
—  
35,100  

50,800  
50,800  

The Company’s assets with fair value categorized as Level 1 within the fair value hierarchy include money market funds, certificates of deposit 
and the Company’s strategic investment in Lysogene, a publicly traded company in France, as more fully described in Note 3, License and Collaboration 
Agreements. The Company did not hold any government and government agency bonds as of December 31, 2021. Certain of the government and 
government agency bonds are publicly traded fixed income securities and were presented as cash equivalents on the consolidated balance sheets as of 
December 31, 2020.

The Company’s assets with fair value categorized as Level 3 within the fair value hierarchy consists of a strategic investment in Series A 

preferred stock of Lacerta as more fully described in Note 3, License and Collaboration Agreements and strategic investments in another two private 
companies. At the end of each reporting period, the fair value of the Company's strategic investments will be adjusted if the issuers were to issue similar or 
identical equity securities or when there is a triggering event for impairment. During the year ended December 31, 2021, the Company recorded an 
impairment loss of $4.5 million related to its investment in one of the private companies.

The following table represents a roll-forward of the fair value of Level 3 financial assets for each of the periods indicated:

Fair value, beginning of year
Additions
Changes in estimated fair value
Fair value, end of year

$

$

F-20

As of December 31,

2021

2020

 $

(in thousands)
35,100  
1,800  
(4,488 )
32,412     $

30,000  
5,100  
—  
35,100  

 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
 
 
   
   
   
   
 
 
   
 
     
     
   
 
   
 
     
     
   
 
   
     
     
     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
 
 
   
 
     
     
   
 
   
 
     
     
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
The Company’s contingent consideration liability with fair value categorized as Level 3 within the fair value hierarchy relates to the regulatory-

related contingent payments to Myonexus selling shareholders as well as to two academic institutions under separate license agreements that meet the 
definition of a derivative. For more information related to Myonexus, please read Note 3, License and Collaboration Agreements. The contingent 
consideration liability was estimated using an income approach based on the probability-weighted expected cash flows that incorporated industry-based 
probability adjusted assumptions relating to the achievement of the milestone and thus the likelihood of making the payments. This fair value measurement 
was based upon significant inputs not observable in the market and therefore represented a Level 3 measurement. Significant changes which increase or 
decrease the probabilities of achieving the milestone or shorten or lengthen the time required to achieve the milestone would result in a corresponding 
increase or decrease in the fair value of the liability. At the end of each reporting period, the fair value is adjusted to reflect the most current assumptions 
through earnings. 

The following table represents a roll-forward of the fair value of Level 3 financial liabilities for each of the periods indicated:

Fair value, beginning of year
Additions
Changes in estimated fair value, net
Fair value, end of year

$

$

As of December 31,

2021

2020

(in thousands)
50,800  
—  
(7,200 )
43,600  

  $

  $

5,200  
600  
45,000  
50,800  

A net decrease of $7.2 million and net increase of $45.0 million was recorded during the years ended December 31, 2021 and December 31, 

2020, respectively, to account for the change in fair value of existing contingent consideration liabilities. These changes, which are recorded through 
earnings, were a result of updates made to certain inputs and assumptions impacting the probability-weighted expected cash flows, principally the 
probability of success of the underlying programs, the estimate of the year that the payments are expected to be made, the expected approval date of the 
underlying programs and the estimate of the amount of payments to be ultimately made. An increase of $0.6 million was recorded during the year ended 
December 31, 2020 to account for new contingent consideration liabilities associated with new license agreements with certain academic institutions that 
meet the definition of a derivative. As of December 31, 2021, the contingent consideration was recorded as a non-current liability on the Company's 
consolidated balance sheets.

The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents, accounts receivable and accounts payable 

approximate fair value because of the immediate or short-term maturity of these financial instruments. For fair value information related to the Company’s 
debt facilities, please read Note 13, Indebtedness.

6. CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES

The following table summarizes the Company’s financial assets with maturities of less than 90 days from the date of purchase included in cash 

equivalents in the consolidated balance sheets for each of the periods indicated:

Money market funds
Government and government agency bonds
Total

  $

  $

F-21

As of December 31,

2021

2020

(in thousands)

1,562,358     $
—      
1,562,358     $

629,440  
602,058  
1,231,498  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
It is the Company’s policy to mitigate credit risk in its financial assets by maintaining a well-diversified portfolio that limits the amount of 

exposure as to maturity and investment type. The Company did not hold any available-for-sale securities at December 31, 2021. The weighted average 
maturity of the Company’s available-for-sale securities as of December 31, 2020 was approximately two months. 

The following tables summarize the Company’s cash, cash equivalents and investments for each of the periods indicated:

Cash and money market funds
Total cash and cash equivalents
As reported:
Cash and cash equivalents
Total cash and cash equivalents

Cash and money market funds
Government and government agency bonds
Total cash, cash equivalents and investments
As reported:
Cash and cash equivalents
Short-term investments
Total cash, cash equivalents and investments

Amortized 
Cost

As of December 31, 2021
Gross 
Unrealized 
Gains

Gross 
Unrealized 
Losses

  $
  $

  $
  $

  $

  $

  $

  $

2,115,869  
2,115,869  

2,115,869  
2,115,869  

Amortized 
Cost

900,590  
1,037,959  
1,938,549  

1,502,639  
435,910  
1,938,549  

  $
  $

  $
  $

  $

  $

  $

  $

(in thousands)
  $
—  
  $
—  

—  
—  

  $
  $

As of December 31, 2020
Gross 
Unrealized 
Gains

Gross 
Unrealized 
Losses

(in thousands)
—  
  $
22  
22  

  $

9  
13  
22  

  $

  $

Fair 
Market
Value

2,115,869  
2,115,869  

2,115,869  
2,115,869  

Fair 
Market
Value

900,590  
1,037,981  
1,938,571  

1,502,648  
435,923  
1,938,571  

—  
—  

—  
—  

  $
  $

  $
  $

—  
—  
—  

—  
—  
—  

  $

  $

  $

  $

7. PRODUCT REVENUES, NET, ACCOUNTS RECEIVABLE AND RESERVES FOR PRODUCT REVENUES

The following table summarizes the Company's product revenues, net disaggregated by product for the periods indicated:

EXONDYS 51
VYONDYS 53
AMONDYS 45
Products, net

For the Year Ended December 31,

2021

2020

(in thousands)

2019

454,361     $
89,511      
68,529      
612,401     $

422,007     $
33,858   
—   
455,865    $

380,718  
115  
—  
380,833  

  $

  $

The following table summarizes the components of the Company’s accounts receivable for the periods indicated:

Product sales receivable, net of discounts and allowances
Government contract receivables
Total accounts receivable, net

  $

  $

As of December 31,

2021

2020

(in thousands)

  $

152,990  
—  
152,990     $

100,870  
470  
101,340  

The relevant government audit was completed and, as a result, the outstanding balance for government contract receivables was received as of 

December 31, 2021.

F-22

 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
 
   
 
 
   
 
   
 
   
 
   
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
 
   
 
   
 
   
 
   
   
   
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
The following table summarizes an analysis of the change in reserves for discounts and allowances for the periods indicated:

Balance, as of December 31, 2019
Provision
Payments/credits
Balance, as of December 31, 2020
Provision
Payments/credits
Balance, as of December 31, 2021

Chargebacks

Rebates

Prompt Pay

(in thousands)

Other Accruals

Total

  $

  $

  $

588     $

9,700    
(8,007 )  
2,281     $
13,308    
(14,790 )  

799     $

44,738     $
52,180    
(55,147 )  
41,771     $
78,637    
(59,902 )  
60,506     $

1,506     $
6,384      
(5,941 )    
1,949     $
9,400      
(8,551 )    
2,798     $

4,671     $
10,175      
(9,877 )    
4,969     $
16,107      
(14,713 )    
6,363     $

51,503  
78,439  
(78,972 )
50,970  
117,452  
(97,956 )
70,466  

The following table summarizes the total reserves above included in the Company’s consolidated balance sheets for the periods indicated:

Reduction to accounts receivable
Component of accrued expenses
Total reserves

  $

  $

As of December 31,

2021

2020

(in thousands)
8,321  
  $
62,145    
70,466     $

8,352  
42,618  
50,970  

8. INVENTORY

The following table summarizes the components of the Company’s inventory for each of the periods indicated:

Raw materials
Work in progress
Finished goods
Total inventory

As of December 31,

2021

2020

(in thousands)

58,822     $

230,194    
26,717    
315,733     $

71,717  
139,704  
20,540  
231,961  

  $

  $

No material inventory reserves existed as of December 31, 2021 or 2020. Non-current inventory, which consists of raw materials and work in 

progress, is included in other non-current assets in the Company's consolidated balance sheets. Non-current inventory is anticipated to be consumed beyond 
our normal operating cycle. As of December 31, 2020, we had no non-current inventory.

The following table summarizes the balance sheet classification of the Company's inventory for each of the periods indicated:

Balance sheet classification
Inventory
Other non-current assets
Total inventory

As of December 31,

2021

2020

(in thousands)

186,212     $
129,521      
315,733     $

231,961  
—  
231,961  

  $

  $

F-23

 
 
 
 
 
 
 
 
   
   
 
 
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
     
 
   
 
 
9. OTHER ASSETS

The following table summarizes the Company’s other current assets for each of the periods indicated:

As of December 31,

2021

2020

(in thousands)

Manufacturing-related deposits and prepaids
Collaboration receivable
Prepaid clinical and pre-clinical expenses
Prepaid maintenance services
Prepaid insurance
Prepaid research expenses
Prepaid income tax
Leasehold improvement receivable
Other

Total other current assets

  $

  $

93,656     $
18,647      
12,667      
8,452      
5,282      
3,082      
1,100      
—      
6,142      
149,028     $

The following table summarizes the Company’s other non-current assets for each of the periods indicated:

Non-current inventory
Manufacturing-related deposits and prepaids
Strategic investments
Restricted cash and investments
Prepaid clinical expenses
Other

Total other non-current assets

  $

  $

As of December 31,

2021

2020

(in thousands)

129,521  
  $
112,765      
34,892  
9,904  
2,007  
3,860  
292,949  

  $

134,430  
34,184  
16,224  
6,411  
4,158  
5,854  
4,939  
3,059  
4,065  
213,324  

—  
148,525  
38,799  
9,315  
3,395  
3,669  
203,703  

10. PROPERTY AND EQUIPMENT, NET

Property and equipment are recorded at historical cost, net of accumulated depreciation. The following table summarizes components of property 

and equipment, net, for each of the periods indicated:

Leasehold improvements
Lab and manufacturing equipment
Building and improvements
Software and computer equipment
Furniture and fixtures
Land
Land improvements
Office equipment
Construction in progress
Property and equipment, gross

Less: accumulated depreciation

Property and equipment, net

2021

As of December 31,

(in thousands)

2020

$

$

103,370     $
64,613    
47,605    
42,506    
9,242    
5,183    
4,921    
1,189    
25,159    
303,788    
(112,632 )  
191,156     $

55,019  
49,571  
39,397  
33,948  
7,010  
5,183  
3,610  
1,178  
71,541  
266,457  
(76,027 )
190,430  

For the years ended December 31, 2021, 2020 and 2019, depreciation expense totaled $36.6 million, $25.2 million and $22.8 million, 

respectively. 

F-24

 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
   
 
 
   
 
 
   
 
  
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
11. INTANGIBLE ASSETS, NET

The following table summarizes the components of the Company’s intangible assets for each of the periods indicated:

Patents
In-licensed rights
Software licenses
Intangible assets, gross
Less: accumulated amortization
Intangible assets, net

As of December 31,

2021

2020

(in thousands)

12,382    
8,573    
299    
21,254    
(7,015 )  
14,239    

$

$

11,210  
8,073  
1,554  
20,837  
(7,209 )
13,628  

$

$

The in-licensed rights relate to agreements with BioMarin and UWA. As a result of the FDA approval of EXONDYS 51, VYONDYS 53 and 

AMONDYS 45, the Company recorded in-licensed rights of $1.0 million, $0.5 million and $0.5 million, respectively. Following the execution of the 
settlement and license agreements with BioMarin in July 2017, the Company recorded a $6.6 million intangible asset related to EXONDYS 51 in the U.S. 
The in-licensed rights are being amortized on a straight-line basis over the remaining life of the related patent because the life of the related patent reflects 
the expected time period that the Company will benefit from the in-licensed right. For more information about the in-licensed rights, please read Note 3, 
License and Collaboration Agreements. For the years ended December 31, 2021, 2020 and 2019, the Company recorded $0.7 million, $0.7 million and $0.8 
million, respectively, of amortization related to the in-licensed rights. 

Patent amortization expense was $0.6 million, $0.6 million and $0.4 million for the years ended December 31, 2021, 2020 and 2019, 
respectively. The Company also expensed the remaining net book value of previously capitalized patents that were later abandoned of $0.5 million, $0.1 
million and $0.2 million for the years ended December 31, 2021, 2020 and 2019, respectively, which were included in research and development expenses 
on the consolidated statements of operations and comprehensive loss.

Amortization related to internal use software was less than $0.1 million, $0.5 million and $0.4 million for the years ended December 31, 2021, 

2020 and 2019, respectively.

The following table summarizes the estimated future amortization for intangible assets:

2022
2023
2024
2025
2026
Thereafter
Total

As of 
December 31, 2021

(in thousands)

1,395  
1,394  
1,391  
1,330  
1,200  
7,529  
14,239  

  $

  $

F-25

 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
12. ACCRUED EXPENSES

The following table summarizes the Company’s accrued expenses for each of the periods indicated:

Accrued contract manufacturing costs
Product revenue related reserves
Accrued employee compensation costs
Accrued clinical and pre-clinical costs
Accrued royalties
Accrued professional fees
Accrued collaboration cost-sharing
Accrued interest expense
Accrued milestone and license expense
Other

Total accrued expenses

As of December 31,

2021

2020

(in thousands)

104,311     $
62,145    
48,299    
25,955    
11,965    
9,381    
2,887    
1,045    
100    
5,609    
271,697     $

36,543  
42,618  
50,803  
22,169  
7,793  
10,221  
3,516  
1,045  
9,380  
9,465  
193,553  

  $

  $

13. INDEBTEDNESS

2024 Convertible Notes

On November 14, 2017, the Company issued $570.0 million senior notes due on November 15, 2024. The 2024 Notes were issued at face value 

and bear interest at the rate of 1.50% per annum, payable semi-annually in cash on each May 15 and November 15, commencing on May 15, 2018. The 
2024 Notes contain customary covenants and events of default, occurrence of which permits the certain holders to accelerate all outstanding obligations, 
including principal and interest. The Company incurred $10.6 million of offering costs, which represents the total debt discount on the 2024 Notes at 
issuance. The debt discount is amortized under the effective interest method and recorded as additional interest expense over the life of the 2024 Notes.

Upon conversion, the Company may pay cash, shares of its common stock or a combination of cash and stock, as determined by the Company in 
its discretion. The 2024 Notes may be convertible into 7,763,552 shares of the Company’s common stock under certain circumstances prior to maturity at a 
conversion rate of 13.621 shares per $1,000 principal amount of the 2024 Notes, which represents a conversion price of $73.42 per share, subject to 
adjustment under certain conditions.

To minimize the impact of potential dilution upon conversion of the 2024 Notes, the Company separately entered into capped call transactions 
with certain counterparties. The capped calls have a strike price of $73.42 and a cap price of $104.88 and are exercisable when and if the 2024 Notes are 
converted. If, upon conversion of the 2024 Notes, the price of the Company’s common stock is between the strike price and the cap price of the capped 
calls, the counterparties will deliver shares of the Company’s common stock and/or cash with an aggregate value equal to the difference between the price 
of the Company’s common stock at the conversion date and the strike price, multiplied by the number of shares of the Company’s common stock related to 
the capped calls being exercised. The Company paid $50.9 million for these capped calls transactions, which was recorded as additional paid-in capital.

Upon adoption of ASU 2020-06, the 2024 Notes are accounted for as a single liability measured at its amortized cost. The cumulative effect of 
the accounting change as of January 1, 2021 increased the carrying amount of the convertible notes by $96.8 million, reduced the accumulated deficit by 
$60.2 million and reduced additional paid-in capital by $157.0 million. Upon adoption of ASU 2020-06, the effective interest rate on the liability 
component of the 2024 Notes for the year ended December 31, 2021 was 1.9%. The effective interest rate on the liability component of the 2024 Notes for 
each of the years ended December 31, 2020 and 2019 was 6.9%. Interest expense of the 2024 Notes was reduced by $22.4 million for the year ended 
December 31, 2021 as a result of adoption of this guidance. For the years ended December 31, 2021, 2020 and 2019, the interest expense related to the 
2024 Notes was $10.7 million, $31.4 million and $29.9 million, respectively. 

December 2019 Term Loan

On December 13, 2019, the Company entered into a loan agreement (the “Credit Agreement”) which provides a term loan (“December 2019 

Term Loan”) of $500.0 million with Biopharma Credit PLC and Biopharma Credit Investments V (Master) LP (collectively, the “Lenders”). The December 
2019 Term Loan has two tranches: A and B, each of which had an initial loan amount of $250.0 million. On September 24, 2020, the Company entered into 
a first amendment to Credit Agreement (the “Amendment”),which increased the aggregate principal amount of tranche B of the December 2019 Term Loan 
from $250.0 million to $300.0 million and revised certain fees. Tranche A and B of the December 2019 Term Loan were drawn down on December 20, 
2019 and November 2, 2020 and will mature on December 20, 2023 and December 31, 2024, respectively, when the principal amount of the loan will 
become 

F-26

 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
due. Borrowings under the Credit Agreement bear interest at a rate per annum equal to 8.5%, which shall be payable quarterly in arrears. The Company 
may voluntarily prepay, in whole or in part, the outstanding balance under the December 2019 Term Loan at any time after the tranche A closed but may be 
obligated to make additional financial considerations to the Lenders.

Upon draw-down of tranche A and B, the Company received net proceeds of $244.9 million and $291.1 million, net of debt discounts of $9.4 

million and $14.9 million relating to fees payable to the Lenders, respectively. Of the fees payable to the Lenders related to tranche A and B, $5.0 million 
and $6.0 million are expected to be paid on December 20, 2023 and December 31, 2024, respectively. The debt discounts are being treated as a reduction to 
the carrying value of tranche A and B of the December 2019 Term Loan and amortized as interest expense over the term of the loan based on an effective 
interest method. Debt issuance costs associated with the draw-down of tranche A and B were $0.7 million and less than $0.1 million, respectively.

As of December 31, 2021, the Company recorded approximately $1,096.9 million as long-term debt on the consolidated balance sheets. For the 

years ended December 31, 2021, 2020 and 2019, the Company recorded $63.5 million, $59.9 million and $30.7 million of interest expense, respectively.

The following table summarizes the Company’s debt facilities for the periods indicated:

Principal amount of the 2024 Notes
Unamortized discount - equity component
Unamortized discount - debt issuance costs

Net carrying value of 2024 Notes

Principal amount of the 2019 Term Loan
Unamortized discounts

Net carrying value of 2019 Term Loan
Total carrying value of debt facilities

Fair value of 2024 Notes
Fair value of 2019 Term Loan
Total fair value of debt facilities

As of December 31,

2021

2020

(in thousands)

569,993     $
—      
(6,320 )    
563,673      
550,000      
(16,797 )    
533,203      
1,096,876     $

846,138     $
576,085      
1,422,223     $

569,993  
(98,721 )
(6,510 )
464,762  
550,000  
(22,269 )
527,731  
992,493  

1,394,249  
550,000  
1,944,249  

$

$

$

$

The fair value of the 2024 Notes is based on open market trades and is classified as Level 1 in the fair value hierarchy. The fair value of the 

December 2019 Term Loan is classified as Level 2 in the fair value hierarchy and is determined using a discounted cash flow analysis with market interest 
rates adjusted for credit risk as a significant input.

The following table summarizes the total gross payments due under the Company’s debt arrangements:

2022
2023
2024
2025
2026
Thereafter
Total payments

As of 
December 31, 2021
(in thousands)

—  
250,000  
869,993  
—  
—  
—  
1,119,993  

  $

  $

The aggregate annual maturities of long-term debt and interest during the years ending December 31, 2022, 2023 and 2024 are $55.9 million, 

$305.3 million and $903.4 million, respectively.  

14. EQUITY 

In October 2021, the Company issued approximately 7.1 million shares of common stock through an underwritten public offering. The offering 

price was $81.00 per share. The Company received net proceeds of approximately $548.5 million from the offering, net of commission and offering 
expenses of approximately $26.5 million.

F-27

 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
In February 2020, the Company issued approximately 2.5 million shares of common stock with a fair value of $312.1 million, net of direct 

transaction fees of $4.3 million as part of the Roche transaction (see Note 3, License and Collaboration Agreements).

In November 2019, the Company issued approximately 0.3 million shares of common stock with a fair value of $29.4 million as part of the up-

front consideration to StrideBio (see Note 3, License and Collaboration Agreements).   

In March 2019, the Company sold approximately 2.6 million shares of common stock through an underwritten public offering. The offering price 
was $140.41 per share. The Company received net proceeds of approximately $365.4 million from the offering, net of commission and offering expenses of 
approximately $0.3 million.    

15. STOCK-BASED COMPENSATION

In June 2013, the Company’s stockholders approved the 2013 Employee Stock Purchase Plan (the “2013 ESPP”) which authorized 0.3 million 

shares of common stock available to be issued. In June 2016 and 2019, the Company’s stockholders approved an additional 0.3 million and 0.5 million 
shares, respectively, of common stock available for issuance under the 2013 ESPP. As of December 31, 2021, 0.4 million shares of common stock remain 
available for future grant under the 2013 ESPP.

In September 2014, the Company initiated the 2014 Employment Commencement Incentive Plan (the “2014 Plan”). The 2014 Plan, which 

authorized 0.6 million shares of common stock to be issued and allows for the grant of stock options, SARs, RSAs, RSUs, performance shares and 
performance units. As of December 31, 2021, 7.0 million shares have been added to the Company's 2014 Plan. As of December 31, 2021, 1.5 million 
shares of common stock remain available for future grant under the 2014 Plan. 

In June 2018, the Company’s stockholders approved the 2018 Equity Incentive Plan (the “2018 Plan”). The 2018 Plan, which authorized 2.9 

million shares of common stock to be issued, allows for the grant of stock options, SARs, RSAs, RSUs, performance shares and performance units. In June 
2020, an additional 3.8 million shares of common stock were approved by the Company’s stockholders and added to the 2018 Plan. Together with the roll-
over shares from the Company’s 2011 Equity Incentive Plan, 4.2 million shares of common stock remain available for future grant under the 2018 Plan as 
of December 31, 2021.

Stock Options

In general, stock options have a ten-year term and vest over a four-year period, with one-fourth of the underlying shares vesting on the first 

anniversary of the grant and 1/48th of the underlying shares vesting monthly thereafter, such that the underlying shares will be fully vested on the fourth 
anniversary of the grant, subject to the terms of the applicable plan under which they were granted.

The fair values of stock options granted during the periods presented are measured on the date of grant using the Black-Scholes-Merton option-

pricing model, with the following assumptions: 

Risk-free interest rate (1)
Expected dividend yield (2)
Expected term (3)
Expected volatility (4)

2021
0.4 - 1.3%  
—    
4.99 years  
60.1 - 70.8%  

For the Year Ended December 31,
2020
0.1 - 1.3%  
—    
5.00 years  
57.3 - 68.2%  

2019
1.4 - 2.5%
—  
5.04 years
52.5 - 68.9%

(1)

(2)
(3)
(4)

The risk-free interest rate is estimated using an average of Treasury bill interest rates over a historical period commensurate with the expected term 
of the option that correlates to the prevailing interest rates at the time of grant.
The expected dividend yield is zero as the Company has not paid any dividends to date and does not expect to pay dividends in the future.
The expected term is estimated using historical exercise behavior. 
The expected volatility is the implied volatility in exchange-traded options of the Company’s common stock. 

The amounts estimated according to the Black-Scholes-Merton option-pricing model may not be indicative of the actual values realized upon the 

exercise of these options by the holders.

F-28

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The following tables summarize the Company’s stock option activity for each of the periods indicated:

Grants outstanding at beginning of
   the period
Granted
Exercised
Cancelled and forfeited

Grants outstanding at end of the period

Grants exercisable at end of the period
Grants vested and expected to vest at
   end of the period

For the Year Ended December 31,
2021

Shares

7,844,947     $
1,685,860    
(283,622 )  
(1,050,264 )  
8,196,921     $

2,532,438     $

7,867,722     $

Weighted
Average
Exercise
Price

70.61  
86.41  
45.71  
112.18  
69.39  

84.71  

68.17  

The weighted-average grant date fair value per share of stock options granted during the years ended December 31, 2021, 2020 and 2019 was 

$48.16, $61.38 and $70.93, respectively. 

Options outstanding at December 31, 2021
Options exercisable at December 31, 2021
Options vested and expected to vest at December 31, 2021

  $
  $
  $

248,479    
59,069    
247,434    

6.4  
5.6  
6.3  

Aggregate
Intrinsic
Value
(in thousands)

Weighted
Average
Remaining
Contractual
Life (Years)

The following table summarizes the Company’s stock options vested and exercised for each of the periods indicated:

Aggregate grant date fair value of stock options
   vested
Aggregate intrinsic value of stock options
   exercised

  $

  $

79,068  

10,622  

  $

  $

80,355     $

50,878  

144,750     $

109,707  

For the Year Ended December 31,

2021

2020

(in thousands)

2019

As of December 31, 2021, there were 3,300,000 options with service and market conditions included in the grants outstanding for the Company’s 
CEO, which have a five-year cliff vesting schedule and a grant date fair value of $13.48 determined by a lattice model with Monte Carlo simulations. These 
options have an exercise price of $34.65 and were granted in June 2017. 

F-29

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
 
 
 
   
 
 
 
   
 
 
 
   
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
Restricted Stock Awards

The Company has granted RSAs to members of its board of directors and certain employees. The following table summarizes the Company’s 

RSA activity for each of the periods indicated:

Grants outstanding at beginning of the
   period

Granted
Vested
Forfeited

Grants outstanding at end of the period

Restricted Stock Units

For the Year Ended December 31,
2021

Shares

48,875     $
—    
(48,875 )  
—    
—     $

Weighted
Average
Grant Date
Fair Value

50.11  
—  
50.11  
—  
—  

The Company grants RSUs to members of its board of directors and employees. The following table summarizes the Company’s RSU activity 

for the periods indicated:  

Grants outstanding at beginning of the
   period

Granted
Vested
Forfeited

Grants outstanding at end of the period

2013 Employee Stock Purchase Plan

For the Year Ended December 31,
2021

Shares

947,079     $
987,464    
(276,980 )  
(337,357 )  
1,320,206     $

Weighted
Average
Grant Date
Fair Value

121.46  
85.32  
119.54  
106.37  
98.69  

Under the Company’s 2013 ESPP, participating employees purchase common stock through payroll deductions. The purchase price is equal to 
85% of the lower of the closing price of the Company’s common stock on the first business day and the last business day of the relevant purchase period. 
The 24-month offering period will end on August 31, 2023. The following table summarizes the Company’s ESPP activity for each of the periods 
indicated:

Number of shares purchased
Proceeds received (in millions)

Stock-based Compensation Expense

2021

For the Year Ended December 31,
2020

2019

  $

111,171      
7.8     $

102,031      
7.5     $

92,086  
5.1  

The following table summarizes stock-based compensation expense by function included within the consolidated statements of operations and 

comprehensive loss:

Research and development
Selling, general and administrative

Total stock-based compensation

2021

For the Year Ended December 31,
2020

2019

(in thousands)

50,526     $
63,417      
113,943     $

41,671     $
66,399      
108,070     $

27,681  
50,921  
78,602  

  $

  $

F-30

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
The following table summarizes stock-based compensation expense by grant type included within the consolidated statements of operations and 

comprehensive loss:

 Stock options
 Restricted stock awards/units
 Employee stock purchase plan
 Total stock-based compensation

2021

For the Year Ended December 31,
2020
(in thousands)

2019

68,995     $
40,055      
4,893      
113,943     $

68,832     $
33,457      
5,781      
108,070     $

53,427  
20,103  
5,072  
78,602  

  $

  $

As of December 31, 2021, there was $175.7 million of total unrecognized stock-based compensation expense related to the Company’s stock-

based compensation plans. The expense is expected to be recognized over a weighted-average period of approximately 3 years. Of this amount, $92.4 
million relates to options with service conditions only, $4.3 million relates to awards with service and market conditions, and the remaining $79.0 million 
related to restricted stock units with service conditions only.

16. 401 (K) PLAN

The Company sponsors a 401(k) Plan (“the Plan”) in the U.S. and other retirement plans in the rest of the world, all of which are defined 

contribution plans. The Plan is available to all employees who are age 21 or older. Participants may make voluntary contributions and the Company makes 
matching contributions according to the Plan’s matching formula. Matching contributions fully vest after one year of service for all employees. The 
expense related to the Plan primarily consists of the Company’s matching contributions.

Expense related to the Plan totaled $5.3 million, $5.3 million and $3.4 million for the years ended December 31, 2021, 2020 and 2019, 

respectively.

17. OTHER INCOME (LOSS)

The following table summarizes other income (loss) for the periods indicated:

Interest expense
Interest income
Amortization of investment discount
Gain from sale of Priority Review Voucher
Gain (loss) on contingent consideration, net*
Impairment of equity investment
Other (expense) income
Total other income (loss)

2021

For the Year Ended December 31,
2020

2019

(in thousands)

  $

  $

(63,525 )   $
354    
157    
102,000    
7,200    
(4,488 )  
(936 )  
40,762     $

(59,947 )   $
2,970      
4,489      
108,069      
(45,000 )    
—      
517      
11,098     $

(30,669 )
7,238  
15,350  
—  
—  
—  
(236 )
(8,317 )

* The gain (loss) on contingent consideration, net is related to the fair value adjustment of the regulatory-related contingent payments that are accounted for 
as derivatives. Please see Note 5. Fair Value Measurements for further details.

18. INCOME TAXES

The following table summarizes the loss before the provision (benefit) for income taxes by jurisdiction for the periods indicated:

Domestic
Foreign
Total

2021

For the Year Ended December 31,
2020

2019

(in thousands)

(47,633 )   $
(371,315 )    
(418,948 )   $

(204,956 )   $
(348,109 )    
(553,065 )   $

(489,747 )
(224,133 )
(713,880 )

  $

  $

F-31

 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
The following table summarizes provision (benefit) for income taxes in the accompanying consolidated financial statements for the periods 

indicated:

Current provision:

Federal
State
Foreign

Total current provision
Deferred benefit:

Federal
State
Foreign

Total deferred benefit
Total income tax (benefit) expense

2021

For the Year Ended December 31,
2020

2019

(in thousands)

  $

  $

—     $
(40 )    
181      
141      

—      
—      
(309 )    
(309 )    
(168 )   $

4     $
624      
680      
1,308      

—      
—      
(245 )    
(245 )    
1,063     $

—  
521  
1,050  
1,571  

(15 )
(5 )
(356 )
(376 )
1,195  

The following table summarizes the reconciliation between the Company’s effective tax rate and the statutory income tax rate for each of the 

periods indicated:

Federal income tax rate
State taxes
Research and development and other tax
   credits
Valuation allowance
Permanent differences
Stock-based compensation
Basis difference in subsidiary
Foreign rate differential
Other

Effective tax rate

2021

For the Year Ended December 31,
2020

2019

21.0   %  
0.4    

10.0    
(9.8 )  
(0.3 )  
(3.0 )  
—    
(18.4 )  
0.1    
(0.0 ) %  

21.0   %   
0.6    

10.1    
(21.3 )  
(1.6 )  
3.5    
—    
(12.9 )  
0.4    
(0.2 ) %   

21.0   %
4.5    

5.1    
(16.8 )  
2.3    
(0.6 )  
(8.4 )  
(7.4 )  
0.1    
(0.2 ) %

Permanent differences affecting the Company’s effective tax rate primarily include excess stock-based compensation tax deductions, net of non-

deductible stock-based compensation and limitation on deductibility of officer compensations. 

In February 2019, the Company exercised its option to acquire Myonexus. Accumulated costs of $253.7 million, associated with the Myonexus 
acquisition, were expensed for U.S. GAAP purposes. Of the $253.7 million in accumulated costs, $85.0 million relates to up-front and milestone payments 
as a result of the execution of the Warrant Agreement in May 2018 as well as certain development milestones being achieved or becoming probable of 
being achieved and $168.7 million relates to the exercise of the exclusive option to acquire Myonexus in February 2019. For U.S. income tax purposes, 
these costs are considered to be an investment in the subsidiary and are not currently deductible for tax purposes. The permanent difference related to this 
acquisition is separately stated in the rate reconciliation above.

F-32

 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
     
     
 
 
 
 
 
 
 
 
 
     
     
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
   
 
   
 
   
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
   
 
 
 
 
   
 
 
 
 
   
 
 
 
 
   
 
 
 
 
   
 
 
 
 
   
 
 
 
 
The following table summarizes the analysis of the deferred tax assets and liabilities for each of the periods indicated: 

Deferred tax assets:

Net operating loss carryforwards
Difference in depreciation and amortization
Research and development tax credits
Stock-based compensation
Lease liabilities
Capitalized inventory
Debt discount
Other

Total deferred tax assets
Deferred tax liabilities:
Right of use asset
Debt discount

Total deferred tax liabilities
Valuation allowance
Net deferred tax assets

As of December 31,

2021

2020

(in thousands)

330,392     $
31,563      
201,512      
38,132      
10,890      
24,172      
5,875      
38,315      
680,851      

(7,405 )    
—      
(7,405 )    
(672,319 )    
1,127     $

333,703  
31,259  
159,917  
31,212  
13,120  
35,959  
—  
28,381  
633,551  

(8,772 )
(18,044 )
(26,816 )
(605,848 )
887  

  $

  $

The Company has evaluated the positive and negative evidence bearing upon the realizability of its U.S. net deferred tax assets, which are 

comprised principally of federal and state net operating loss carryforwards, research and development tax credit carryforwards, stock-based compensation 
expense, capitalized inventory, and intangibles. Under the applicable accounting standards, management has considered the Company’s history of losses 
and concluded that it is more likely than not that the Company will not recognize the benefits of net federal and state deferred tax assets. Accordingly, a full 
valuation allowance of the U.S. net deferred tax asset is maintained at December 31, 2021 and 2020. The net change in the valuation allowance for deferred 
tax assets was an increase of $66.5 million and $117.0 million for the years ended December 31, 2021 and 2020, respectively. This increase for the year 
ended December 31, 2021 was primarily due to the generation of federal and state income tax credits and a decrease in the debt discount deferred tax 
liability that was recorded through additional paid-in capital as a result of the Company's early adoption of ASU 2020-06.  

The Company generated foreign deferred tax assets mainly consisting of net operating loss carryforwards, stock-based compensation and 

unrealized gain/losses. Based upon the income projections in the majority of the foreign jurisdictions, the Company believes it will realize the benefit of its 
future deductible differences in these jurisdictions. As such, the Company has not recorded a valuation allowance against these foreign jurisdictions. Brazil, 
the Netherlands, Czech Republic and one of the entities in the United Kingdom have generated deferred tax assets, which consist of net operating loss 
carryforwards and stock-based compensation expense. The Company has concluded that it is more likely than not that we will not recognize the future 
benefits of the deferred tax assets, and accordingly, a full valuation allowance has been recorded against these foreign deferred tax assets. 

As of December 31, 2021, the Company had federal and state net operating loss carryforwards of $1,280.4 million and $841.2 million, 

respectively, available to reduce future taxable income. The federal and state net operating loss carry forwards of $577.2 million and $797.0 million will 
expire at various dates between 2022 and 2041. The federal and state net operating loss carryforwards of $703.2 million and $44.2 million, respectively, 
can be carried forward indefinitely. Utilization of these net operating losses could be limited under Section 382 of the Internal Revenue Code and similar 
state laws based on historical or future ownership changes and the value of the Company’s stock. Additionally, the Company has $139.2 million and $77.0 
million of federal and state research and development credits, respectively, available to offset future taxable income. These federal and state research and 
development credits begin to expire between 2022 and 2041 and between 2022 and 2036, respectively. The Company also has foreign net operating loss 
carryforwards of $13.6 million, mainly derived from the net operating loss generated by its subsidiary in Brazil, which may be carried forward indefinitely.

The Company, or one of its subsidiaries, files income tax returns in the U.S., and various state and foreign jurisdictions. The federal, state and 

foreign income tax returns are generally subject to tax examinations for the tax years ended December 31, 2018 through December 31, 2021. To the extent 
the Company has tax attribute carryforwards, the tax years in which the attribute was generated may still be adjusted upon examination by the Internal 
Revenue Service, state or foreign tax authorities to the extent utilized in a future period.

F-33

 
 
 
 
 
 
 
   
 
 
 
 
 
 
   
 
 
   
   
   
   
   
   
   
   
   
     
 
   
   
   
   
 
The follow table summarizes the reconciliation of the beginning and ending amount of total unrecognized tax benefits for each of the periods 

indicated:

2021

For the Year Ended December 31,
2020

2019

(in thousands)

Balance at beginning of the period

Increase related to current year tax positions
Increase related to prior year tax positions
Decrease related to prior year tax positions

Balance at end of the period

  $

  $

48,475     $
5,503      
—      
(163 )    
53,815     $

41,753     $
6,722      
—      
—      
48,475     $

37,544  
4,275  
109  
(175 )
41,753  

The balance of total unrecognized tax benefits at December 31, 2021, if recognized, would not affect the effective tax rate on income from 

continuing operations, due to a full valuation allowance against the Company’s U.S. deferred tax assets. The Company does not expect that the amount of 
unrecognized tax benefits to change significantly in the next twelve months. The Company’s policy is to recognize interest and/or penalties related to 
income tax matters in income tax expense. It had no accrual for interest or penalties on its consolidated balance sheets at December 31, 2021 or 2020. No 
interest and/or penalties were recognized in 2021 or 2020.

The Company’s intent is to only make distributions from non-U.S. subsidiaries in the future when they can be made at no net tax cost. Otherwise, 

the Company considers all of its foreign earnings to be permanently reinvested outside of the U.S. and has no plans to repatriate these foreign earnings to 
the U.S. The Company has no material unremitted earnings from its non-U.S. subsidiaries.

The Tax Cuts and Jobs Act created a new provision that certain income earned by foreign subsidiaries, known as global intangible low-tax 

income, must be included in the gross income of their U.S. shareholder. The Company has adopted a policy to account for this provision as a period cost.

19. LEASES

The Company has real estate operating leases in Cambridge, Andover and Burlington, Massachusetts, Dublin and Columbus, Ohio, and Durham, 

NC that provide for scheduled annual rent increases throughout each lease’s term. The Company has also identified leases embedded in certain of its 
manufacturing and supply agreements as the Company determined that it controls the use of the facilities and related equipment therein. For more 
information related to manufacturing and supply agreements with Thermo Fisher Scientific, Inc. (“Thermo”) and Catalent, Inc. (“Catalent”), please refer to 
Note 21, Commitments and Contingencies. 

As of December 31, 2021, ROU assets for operating leases were $45.5 million and operating lease liabilities were $56.6 million. The following 

table contains a summary of the lease costs recognized and other information pertaining to the Company’s operating leases for the periods indicated: 

Lease cost
Operating lease cost
Variable lease cost
Total lease cost

Other information
Operating lease payments
Operating lease liabilities arising from obtaining ROU 
assets
Weighted average remaining lease term
Weighted average discount rate

  $

  $

  $

F-34

For the Year Ended December 31,

2021

2020

(in thousands)

28,737  
18,742  
47,479  

  $

  $

24,449  

  $

13,225  
3.5 years

7.6 %    

18,978  
17,065  
36,043  

19,344  

59,327  
4.6 years

7.6 %

 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
   
 
   
 
   
 
   
 
   
 
   
   
 
   
 
   
 
The following table summarizes maturities of lease liabilities and the reconciliation of lease liabilities as of December 31, 2021:

2022
2023
2024
2025
2026
Thereafter
Total minimum lease payments
Less: imputed interest
Total operating lease liabilities
Included in the consolidated balance sheet:
Current portion of lease liabilities within other current liabilities
Lease liabilities
Total operating lease liabilities

For the Year Ended 
December 31, 2021

(in thousands)

18,702  
18,326  
17,582  
9,052  
571  
—  
64,233  
(7,672 )
56,561  

15,049  
41,512  
56,561  

  $

  $

  $

  $

20. NET LOSS PER SHARE

Basic net loss per share is computed by dividing net loss by the weighted-average number of shares of common stock outstanding. Diluted net 

loss per share is computed by dividing net loss by the weighted-average number of shares of common stock and dilutive common stock equivalents 
outstanding. Given that the Company recorded a net loss for each of the periods presented, there is no difference between basic and diluted net loss per 
share since the effect of common stock equivalents would be anti-dilutive and are, therefore, excluded from the diluted net loss per share calculation.

Net loss
Weighted-average common shares outstanding - basic
Effect of dilutive securities*
Weighted-average common shares outstanding - diluted
Net loss per share — basic and diluted

  $

  $

(418,780 )   $
81,262      
—      
81,262      
(5.15 )   $

(554,128 )   $
77,956      
—      
77,956      
(7.11 )   $

(715,075 )
73,615  
—  
73,615  
(9.71 )

For the Year Ended December 31,

2021

2020

2019

(in thousands, except per share amounts)

* For the years ended December 31, 2021, 2020 and 2019, stock options, RSAs, RSUs and ESPP to purchase approximately 9.7 million, 9.0 million and 
9.1 million shares of common stock, respectively, were excluded from the net loss per share calculation as their effect would have been anti-dilutive. The 
Company accounts for the effect of the 2024 Notes on diluted net earnings per share using the if-converted method as this obligation may be settled in cash 
or shares at the Company’s option. The effect of potential share settlement is included in the diluted net earnings per share calculation if the effect is more 
dilutive. During the year ended December 31, 2021, the inclusion of the potential share settlement of the 2024 Notes was anti-dilutive. Accordingly, the 
potential conversion of 7,763,552 shares has been excluded from the computation of diluted net earnings per share as of December 31, 2021.

21. COMMITMENTS AND CONTINGENCIES

Manufacturing Obligations

The Company has entered into long-term contractual arrangements from time to time for the provision of goods and services. 

Thermo Fisher Scientific, Inc.

The Company entered into a development, commercial manufacturing, and supply agreement in June 2018 and, subsequently, entered into the 

first and second amendments in May 2019 and July 2020, respectively, with Thermo, formerly Brammer Bio MA, LLC (collectively, the “Thermo 
Agreements”). Pursuant to the terms of the Thermo Agreements, the Company had access to substantially all of the facility’s eight clean room suites for the 
Company’s gene therapy programs, subject to certain minimum and maximum volume limitations. The Company determined that the Thermo Agreements 
contained a lease because the Company had the right to direct the use of the facility and related equipment therein. The lease on four of the eight dedicated 
clean 

F-35

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
   
   
   
 
room suites at Thermo commenced during 2020 and the remaining four commenced during 2021, which is when the dedicated clean room suites became 
available for use by the Company.

In October 2021, the Company executed a third amendment (the “Amendment”) that modified the terms of the Thermo Agreements. The 
modification significantly decreased the Company’s right of use of the facility’s capacity and significantly reduced the fixed and in-substance fixed 
payments due over the remaining term of the agreement. The modification was accounted for as a lease termination, resulting in: (i) the derecognition of 
right of use assets of $23.4 million, (ii) the derecognition of lease liabilities of $20.1 million, and (iii) the recognition of a loss of $3.3 million, which is 
included in research and development expense. In addition, as a result of the capacity changes associated with the Amendment, $21.1 million of accelerated 
amortization of nonrefundable advance payments made to Thermo that were previously recorded as other assets in the accompanying consolidated balance 
sheets were charged to research and development expense.

Under the Amendment, the Thermo Agreements will expire on December 31, 2028, or earlier if certain conditions are met. The Company has the 

ability to extend the term with an 18-months’ notice and an agreement between the two parties. The Company also has the ability to terminate the Thermo 
Agreements prior to expiration, subject to the payment of additional financial consideration. Further, the Company has committed to guaranteed purchases 
under the Amendment on a take-or-pay basis regardless of whether services or goods are ordered. As of December 31, 2021, the Company believes it is 
probable that the guaranteed purchase requirements will be met in the normal course of business throughout the term of the agreement.     

Catalent, Inc.

The Company entered into a manufacturing collaboration agreement and, subsequently, entered into a manufacturing and supply agreement with 

Catalent, formerly Paragon Biosciences, Inc. in October 2018 and February 2019, respectively (collectively, the “Catalent Agreements”). Pursuant to the 
terms of the Catalent Agreements, Catalent agreed to provide the Company with two dedicated clean room suites and an option to reserve two additional 
clean room suites for its gene therapy programs, subject to certain minimum and maximum volume limitations. In September 2019, the Company exercised 
the option to gain access to the two additional clean room suites. The Catalent Agreements will expire on December 31, 2024. The Company has the ability 
to terminate the Catalent Agreements prior to expiration, subject to the payment of additional financial consideration. The Company determined that the 
Catalent Agreements contained a lease because the Company had the right to direct the use of the facility and related equipment therein. The lease on all 
four dedicated clean room suites at Catalent commenced during 2020, which is when the dedicated clean room suites became available for use by the 
Company.

In March 2021, the Company modified the terms of the Catalent Agreements. The modification decreased the Company’s right of use of certain 

dedicated clean room suites and reduced the fixed and in-substance fixed payments due over the remaining term of the agreement. The modification was 
accounted for as a partial lease termination, resulting in: (i) the derecognition of right of use assets of $22.8 million, (ii) the derecognition of lease liabilities 
of $20.0 million, and (iii) the recognition of a loss of $2.8 million, which is included in research and development expense. 

Aldevron, LLC

The Company entered into a clinical and commercial supply agreement in December 2018, as subsequently amended in June 2020, with 

Aldevron LLC (“Aldevron”) for the supply of plasmid DNA to fulfill its needs for gene therapy clinical trials and commercial supply (collectively, the 
“Aldevron Agreements”). Pursuant to the terms of the Aldevron Agreements, Aldevron agreed to reserve a certain amount of manufacturing capacity on a 
quarterly basis. In return, the Company is required to make advance payments to Aldevron related to the manufacturing capacity. The term of the Aldevron 
Agreements will expire on December 31, 2026. The Company has the option to extend the term of the Aldevron Agreements by one year if the Company 
delivers a written notice of its intention to extend to Aldevron no later than June 1, 2025. Both parties have the right to early terminate without additional 
penalty. The Company has determined that the Aldevron Agreements do not contain an embedded lease because it does not convey the right to control the 
use of Aldevron’s facility or related equipment therein. 

The following table presents non-cancelable contractual obligations arising from long-term contractual arrangements, including obligations 

related to leases embedded in certain supply agreements:

2022
2023
2024
2025
2026
Thereafter
Total manufacturing commitments

F-36

As of 
December 31, 2021

(in thousands)

647,124  
178,345  
138,725  
100,838  
54,720  
109,440  
1,229,192  

  $

$

 
 
 
 
 
 
 
 
   
   
   
   
   
 
 
Additionally, should the Company obtain regulatory approval for any drug product candidate produced as a part of the Company’s manufacturing 

obligations above, additional minimum batch requirements with the respective manufacturing parties would be required.

Other Funding Commitments

The Company has several on-going clinical trials in various clinical trial stages. Its most significant clinical trial expenditures are to contract 
research organizations (“CROs”). The CRO contracts are generally cancellable at the Company’s option. As of December 31, 2021, the Company has 
approximately $378.5 million in cancellable future commitments based on existing CRO contracts. For the years ended December 31, 2021, 2020 and 
2019, the Company recognized approximately $47.9 million, $40.4 million and $31.6 million, respectively, for expenditures incurred by CROs. 

Litigation 

In the normal course of business, the Company may from time to time be named as a party to various legal claims, actions and complaints, 

including matters involving securities, employment, intellectual property, arising from the use of therapeutics utilizing its technology, or others. We record 
a loss contingency reserve for a legal proceeding when we consider the potential loss probable and we can reasonably estimate the amount of the loss or 
determine a probable range of loss. We provide disclosure when we consider a loss reasonably possible or when we determine that a loss in excess of a 
reserve is reasonably possible. We provide an estimate of such reasonably possible losses or an aggregate range of such reasonably possible losses, unless 
we believe that such an estimate cannot be made. The Company has not recorded any material accruals for loss contingencies and in management's opinion 
no material range of loss is estimable for the matters described below as of December 31, 2021.

On September 15, 2020, REGENXBIO INC. (“RegenX”) and the Trustees of the University of Pennsylvania filed a lawsuit against the Company 
and Sarepta Therapeutics Three, LLC (together, “Sarepta”), in the U.S. District Court for the District of Delaware. The plaintiffs assert patent infringement 
of U.S. Patent No. 10,526,617 (“the ‘617 Patent”) under 35 U.S.C.§§ 271(a)-(c) based on Sarepta’s alleged direct or indirect manufacture and use of the 
patented cultured host cell technology allegedly used to make adeno-associated virus (“AAV”) gene therapy products, including SRP-9001. Specifically, 
the Complaint essentially includes the allegation that Sarepta’s use, and the use by its contract manufacturers on its behalf, of a host cell containing a 
recombinant acid molecule that encodes a capsid protein having at least 95% amino acid identity to AAVrh10 infringes upon the ‘617 Patent asserted by 
RegenX. Plaintiffs seek injunctive relief, a judgment of infringement and willful infringement, an unspecified amount of damages that is no less than a 
reasonable royalty (treble damages), attorneys’ fees and costs, and such other relief as the court deems just and proper. On January 4, 2022, the Court 
denied Sarepta’s motion to dismiss the case pursuant to Federal Rule of Civil Procedure 12(b)(6) based on the Safe Harbor provision of non-infringement 
contained in 35 U.S.C. § 271(e)(1). Sarepta answered the Complaint on January 18, 2022, and a case schedule has been set with a trial commencing on 
January 29, 2024.  

On July 13, 2021, Nippon Shinyaku Co., Ltd. (“Nippon Shinyaku” or “NS”) filed a lawsuit against the Company in the U.S. District Court for 

the District of Delaware. NS asserts a claim for breach of contract arising from Sarepta filing seven petitions for Inter Partes Review (“IPR Petitions”) with 
the Patent Trial and Appeal Board at the USPTO (PTAB Case Nos. IPR2021-01134, IPR2021-01135, IPR2021-01136, IPR2021-01137, IPR2021-01138, 
IPR2021-01139, IPR2021-01140) in which Sarepta is seeking to invalidate certain NS patents concerning exon 53 skipping technology (U.S. Patent Nos. 
9,708,361, 10,385,092, 10,407,461, 10,487,106, 10,647,741, 10,662,217, and 10,683,322, respectively, and collectively the “NS Patents”). In addition, NS 
asserts claims for patent infringement and willful infringement of each of the NS Patents arising from Sarepta’s alleged activities concerning, including the 
sale of, its exon 53 skipping product, VYONDYS 53 (golodirsen). NS further seeks a determination of non-infringement by NS arising from NS’s alleged 
activities concerning, including the sale of, its exon 53 skipping product, Viltepso (viltolarsen) and invalidity of certain patents licensed to the Company 
from UWA (U.S. Patent Nos. 9,994,851, 10,227,590, and 10,266,827, collectively the “UWA Patents”). NS is seeking legal fees and costs, an unspecified 
amount of monetary relief (treble damages) attributed to Sarepta’s alleged infringement, and such other relief as the court deems just and proper. NS filed a 
motion for preliminary injunction solely seeking Sarepta’s withdrawal of the IPR Petitions. The district court denied NS’ motion for preliminary injunction 
on September 24, 2021, and the U.S. Court of Appeals for the Federal Circuit reversed and remanded the district court on February 8, 2022. The deadline 
for the Company to seek rehearing of the Federal Circuit decision is March 10, 2022. In January 2022, the PTAB granted institution of all claims of all NS 
Patents in response to Sarepta’s IPR Petitions and determined that Sarepta has demonstrated a reasonable likelihood of success in proving that the NS 
Patents are unpatentable. On December 27, 2021, the district court partially granted and denied the motion to dismiss by Sarepta and ordered NS to file a 
Second Amended Complaint (“SAC”), which it did on January 14, 2022. In the SAC, NS maintains all claims of the original complaint of July 13, 2021, 
except a determination of non-infringement of the UWA Patents. On January 28, 2022, Sarepta filed its answer to the SAC, with defenses and 
counterclaims against NS and NS Pharma Inc. that include infringement of the UWA Patents arising from their alleged activities concerning, including the 
sale of, its exon 53 skipping product, Viltepso (viltolarsen) and breach of contract. Sarepta is also seeking a determination of invalidity of the NS Patents. 
Sarepta is seeking an award of relief in its defenses to NS’ allegations, a judgment of breach of contract, a determination of invalidity of the NS Patents, a 
judgment of infringement and willful infringement of the UWA Patents, legal fees and costs, an unspecified amount of monetary relief (treble damages) 
attributed to NS’ alleged infringement, and such other relief as the court deems just and proper. Case scheduling in district court, including a trial date, will 
follow. 

F-37

 
  
    
DocuSign Envelope ID: D9277ED3-955A-426C-B021-BDA2E6B1CB05

Exhibit 10.62

SIXTH AMENDMENT TO LICENSE, COLLABORATION, AND OPTION AGREEMENT

This SIXTH AMENDMENT TO LICENSE, COLLABORATION, AND OPTION AGREEMENT (this
“Sixth  Amendment”)  is  made  and  entered  into  as  of  November  30,  2021  (the  “Sixth  Amendment  Effective  Date”) 
between Sarepta Therapeutics Three LLC, a limited liability company organized and existing under the laws of the State of 
Delaware, United States of America, with its principal offices at 215 First Street, Cambridge, MA, 02142 (“Sarepta”) and 
F. Hoffmann-La Roche Ltd, a company organized and existing under the laws of Switzerland, with its principal office at 
Grenzacherstrasse 124, 4070 Basel, Switzerland (“Roche”). Sarepta and Roche may be referred to herein individually as a 
“Party” and collectively as the “Parties.”

WHEREAS,  Sarepta  and  Roche  entered  into  that  certain  License,  Collaboration,  and  Option  Agreement  executed  on 
December 21, 2019 and effective as of February 4, 2020 and amended October 23, 2020,

October 28, 2020, February 4, 2021, June 23, 2021, and August 31, 2021 (the “Original Agreement”); and WHEREAS, the 

Parties desire to make certain further amendments to the Original Agreement;

NOW,  THEREFORE,  in  consideration  of  the  promises  and  covenants  contained  in  this  Amendment,  and  intending  to  be 
legally bound, the Parties hereby agree as follows:

1.

Interpretation.  Capitalized  terms  not  defined  in  this  Sixth  Amendment  have  the  meanings  given  such  terms  in  the 
Original  Agreement.  References  to  Sections  and  Schedules  herein  will  be  to  Sections  and  Schedules  of  the  Original 
Agreement, except as otherwise noted.

2. Amendments.

a.

Section 8.6.1 shall be deleted and replaced by the following:

Development Supply Agreement.  Unless otherwise agreed by the Parties, no later than
(a)January 31, 2022, with regards to the Lead Product, and (b) no later than nine months following the 
effective date of exercise of the Option with regards to every other Licensed Product to which this Article 
8 (Manufacturing and Supply) applies in accordance with Section 8.1, (or such other time as agreed by 
each Party), the Parties will negotiate in good faith and enter into a supply agreement on reasonable and 
customary terms for the supply of such Licensed Product by Sarepta to Roche in the Roche Territory at 
the  Supply  Price  (the  “Development  Supply  Agreement”),  and  a  related  quality  agreement,  which 
agreements  will  govern  the  terms  and  conditions  of  the  Manufacturing  of  such  Licensed  Product  for 
Development  purposes.  The  Parties  may  choose  to  combine  into  a  single  agreement  the  Development 
Supply Agreement and the Commercial Supply Agreement for a Licensed Product.

b.

Section 8.6.2 shall be deleted and replaced by the following:

Commercial Supply Agreement.  Unless otherwise agreed by the Parties, no later   than
(a)January  31,  2022,  with  regards  to  the  Lead  Product,  and  (b)  no  later  than  twelve  (12)  months 
following the effective date of the Option Exercise with regards to every other Licensed Product to which 
this Article 8 (Manufacturing and Supply) applies in accordance with Section 8.1, (or such other time as 
agreed  by  each  Party),  the  Parties  will  negotiate  in  good  faith  and  enter  into  a  commercial  supply 
agreement on reasonable and customary terms for the commercial-grade supply of such Licensed Product 
by Sarepta to Roche in 

1

 
 
 
 
 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: D9277ED3-955A-426C-B021-BDA2E6B1CB05

the Roche Territory at the Supply Price (the “Commercial Supply Agreement” and

2

 
 
 
DocuSign Envelope ID: D9277ED3-955A-426C-B021-BDA2E6B1CB05

together  with  the  Development  Supply  Agreement,  the  “Supply  Agreements”),  and  a  related  quality 
agreement, which agreements will govern the terms and conditions of the Manufacturing and supply of 
such  Licensed  Product  for  Commercialization  purposes.  As  noted  above,  the  Parties  may  choose  to 
combine  into  a  single  agreement  the  Development  Supply  Agreement  and  the  Commercial  Supply 
Agreement for a Licensed Product,

3. Effect on Original Agreement. Except as specifically amended by this Sixth Amendment, the Original Agreement will 
remain in full force and effect and is hereby ratified and confirmed. Each future reference to the Original Agreement 
will refer to the Original Agreement as amended by this Sixth Amendment. To the extent a conflict arises between the 
terms of the Original Agreement and this Sixth Amendment, the terms of this Sixth Amendment shall prevail but only 
to the extent necessary to accomplish their intended purpose.

4.

Incorporation. Article 17 of the Original Agreement is hereby incorporated mutatis mutandis into this Amendment.

5. Binding Effect. This Sixth Amendment will be binding upon and inure to the benefit of the Parties and their respective 

permitted successors and assigns.

6. Authority. As of the Sixth Amendment Effective Date, each Party hereby represents and warrants that

(a)  it  has  the  power  and  authority  to  execute  and  deliver  this  Sixth  Amendment,  (b)  the  execution,  delivery,  and 
performance of this Sixth Amendment by it has been duly authorized by all requisite corporate action, and (c) this Sixth 
Amendment has been duly executed and delivered on behalf of such Party and constitutes a legal, valid, and binding 
obligation of such Party and is enforceable against it in accordance with its terms.

7. Governing Law. This Sixth Amendment and all amendments, modifications, alterations, or supplements hereto, and the 
rights  of  the  Parties,  will  be  construed  under  and  governed  by  the  laws  of  the  State  of  New  York,  United  States, 
exclusive of its conflicts of laws principles.

8. Amendments.  This  Sixth  Amendment  may  not  be  modified  or  amended,  except  by  another  agreement  in  writing 

executed by duly authorized signatories of each Party.

9. Counterparts. This Sixth Amendment may be executed in two or more counterparts, all of which taken together will be 
regarded  as  one  and  the  same  instrument.  Each  Party  may  execute  this  Sixth  Amendment  in  Adobe™  Portable 
Document  Format  (PDF)  sent  by  electronic  mail.  PDF  signatures  of  authorized  signatories  of  the  Parties  will  be 
deemed  to  be  original  signatures,  will  be  valid  and  binding  upon  the  Parties,  and,  upon  delivery,  will  constitute  due 
execution of this Sixth Amendment.

[Signatures Follow]

IN WITNESS WHEREOF, the Parties have executed this Sixth Amendment to License, Collaboration, and Option Agreement 
through their duly authorized representatives.

3

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
DocuSign Envelope ID: D9277ED3-955A-426C-B021-BDA2E6B1CB05

Sarepta Therapeutics Three, LLC

By: /s/ Adam Hopkin
Name: Adam Hopkin
Title: Manager

F. Hoffmann-La Roche Ltd

By: /s/ Claire Steers
Name: Claire Steers
Title: Global Alliance Director

By: /s/ Franziska Baechler
Name: Franziska Baechler
Title: Attorney-at-Law

4

[Signature Page To Sixth Amendment To License, Collaboration, and Option Agreement]

 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: EA350C36-E900-4606-87D9-B0A4B2C2E752
Roche Draft 1/6/2021

Exhibit 10.63

SEVENTH AMENDMENT TO LICENSE, COLLABORATION, AND OPTION AGREEMENT

This SEVENTH AMENDMENT TO LICENSE, COLLABORATION, AND OPTION AGREEMENT
(this “Seventh Amendment”) is made and entered into as of January 5, 2022 (the “Seventh Amendment Effective Date”) 
between Sarepta Therapeutics Three LLC, a limited liability company organized and existing under the laws of the State of 
Delaware, United States of America, with its principal offices at 215 First Street, Cambridge, MA, 02142 (“Sarepta”) and 
F. Hoffmann-La Roche Ltd, a company organized and existing under the laws of Switzerland, with its principal office at 
Grenzacherstrasse 124, 4070 Basel, Switzerland (“Roche”). Sarepta and Roche may be referred to herein individually as a 
“Party” and collectively as the “Parties.”

WHEREAS, Sarepta and Roche entered into that certain License, Collaboration, and Option Agreement
dated December 21, 2019 (the “Original Agreement”); and

WHEREAS, the Parties desire to make certain amendments to the Original Agreement;

NOW, THEREFORE, in consideration of the promises and covenants contained in this Amendment, and intending to be 
legally bound, the Parties hereby agree as follows:

1.

Interpretation. Capitalized terms not defined in this Seventh Amendment have the meanings given such terms in the 
Original Agreement. References to Sections and Schedules herein will be to Sections and Schedules of the Original 
Agreement, except as otherwise noted.

2. Amendments.

Section 4.1 is hereby deleted in its entirety and replaced with the following:

As between the Parties and in accordance with this Agreement, (a) Sarepta will be the Party that performs all 
Development activities set forth in the Joint Global Development Plan for the Licensed Products and all Development 
activities for all Option Products worldwide, unless agreed otherwise by the Parties and (b) Roche will be the Party 
that performs all Development activities set forth in the Roche Territory Development Plan for the Licensed Products. 
Each Party will conduct all Development activities for which it is responsible under this Agreement in a good 
scientific manner, in accordance with GLP and GCP, as applicable, and in compliance with Professional Requirements 
and Applicable Law.

3. Effect on Original Agreement. Except as specifically amended by this Amendment, the Original Agreement will 

remain in full force and effect and is hereby ratified and confirmed. Each future reference to the Original 
Agreement will refer to the Original Agreement as amended by this Amendment. To the extent a conflict arises 
between the terms of the Original Agreement and this Amendment, the terms of this Amendment shall prevail but 
only to the extent necessary to accomplish their intended purpose.

4.

Incorporation. Article 17 of the Original Agreement is hereby incorporated mutatis mutandis into this Amendment.

5. Binding Effect. This Seventh Amendment will be binding upon and inure to the benefit of the Parties and their 

respective permitted successors and assigns.

1
87006015_2

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: EA350C36-E900-4606-87D9-B0A4B2C2E752
Roche Draft 1/6/2021

6. Authority. As of the Seventh Amendment Effective Date, each Party hereby represents and warrants that (a) it has the 
power and authority to execute and deliver this Seventh Amendment, (b) the execution, delivery, and performance of 
this Seventh Amendment by it has been duly authorized by all requisite corporate action, and (c) this Seventh 
Amendment has been duly executed and delivered on behalf of such Party and constitutes a legal, valid, and binding 
obligation of such Party and is enforceable against it in accordance with its terms.

7. Governing Law. This Seventh Amendment and all amendments, modifications, alterations, or supplements hereto, and 
the rights of the Parties, will be construed under and governed by the laws of the State of New York, United States, 
exclusive of its conflicts of laws principles.

8. Amendments. This Seventh Amendment may not be modified or amended, except by another agreement in 

writing executed by duly authorized signatories of each Party.

9. Counterparts. This Seventh Amendment may be executed in two or more counterparts, all of which taken together will 
be regarded as one and the same instrument. Each Party may execute this Seventh Amendment in Adobe™ Portable 
Document Format (PDF) sent by electronic mail.  PDF signatures of authorized signatories of the Parties will be 
deemed to be original signatures, will be valid and binding upon the Parties, and, upon delivery, will constitute due 
execution of this Seventh Amendment.

[Signatures Follow]

2
87006015_2

 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: EA350C36-E900-4606-87D9-B0A4B2C2E752

IN WITNESS WHEREOF, the Parties have executed this Seventh Amendment to License, Collaboration, and Option 
Agreement through their duly authorized representatives.

Sarepta Therapeutics Three, LLC

By: /s/ Adam Hopkin
Name: Adam Hopkin
Title: Manager

F. Hoffmann-La Roche Ltd

By: /s/ Claire Steers
Name: Claire Steers
Title: Global Alliance Director

By: /s/ Franziska Baechler
Name: Franziska Baechler
Title: Attorney-at-Law

[Signature Page To Seventh Amendment To License, Collaboration, and Option Agreement]

 
 
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
 
DocuSign Envelope ID: 118F1C3C-AB1A-4635-B0F9-E8EBF3E1D40D

Exhibit 10.64

EIGHTH AMENDMENT TO LICENSE, COLLABORATION, AND OPTION AGREEMENT

This EIGHTH AMENDMENT TO LICENSE, COLLABORATION, AND OPTION AGREEMENT (this
“Eighth  Amendment”)  is  made  and  entered  into  as  of  January  28,  2022  (the  “Eighth  Amendment  Effective  Date”) 
between Sarepta Therapeutics Three LLC, a limited liability company organized and existing under the laws of the State of 
Delaware, United States of America, with its principal offices at 215 First Street, Cambridge, MA, 02142 (“Sarepta”) and 
F. Hoffmann-La Roche Ltd, a company organized and existing under the laws of Switzerland, with its principal office at 
Grenzacherstrasse 124, 4070 Basel, Switzerland (“Roche”). Sarepta and Roche may be referred to herein individually as a 
“Party” and collectively as the “Parties.”

WHEREAS,  Sarepta  and  Roche  entered  into  that  certain  License,  Collaboration,  and  Option  Agreement  executed  on 
December 21, 2019 and effective as of February 4, 2020 and amended October 23, 2020,
October  28,  2020,  February  4,  2021,  June  23,  2021,  August  31,  2021,  November  30,  2021,  and  January  5,  2022  (the 
“Original Agreement”); and

WHEREAS, the Parties desire to make certain further amendments to the Original Agreement;

NOW, THEREFORE, in consideration of the promises and covenants contained in this Eighth Amendment, and intending to 
be legally bound, the Parties hereby agree as follows:

1.

Interpretation.  Capitalized  terms  not  defined  in  this  Eighth  Amendment  have  the  meanings  given  such  terms  in  the 
Original  Agreement.  References  to  Sections  and  Schedules  herein  will  be  to  Sections  and  Schedules  of  the  Original 
Agreement, except as otherwise noted.

2. Amendments.

a.

Section 8.6.1 shall be deleted and replaced by the following:

Development Supply Agreement.  Unless otherwise agreed by the Parties, no later than
(a)March  31,  2022,  with  regards  to  the  Lead  Product,  and  (b)  no  later  than  nine  months  following  the 
effective date of exercise of the Option with regards to every other Licensed Product to which this Article 
8 (Manufacturing and Supply) applies in accordance with Section 8.1, (or such other time as agreed by 
each Party), the Parties will negotiate in good faith and enter into a supply agreement on reasonable and 
customary terms for the supply of such Licensed Product by Sarepta to Roche in the Roche Territory at 
the  Supply  Price  (the  “Development  Supply  Agreement”),  and  a  related  quality  agreement,  which 
agreements  will  govern  the  terms  and  conditions  of  the  Manufacturing  of  such  Licensed  Product  for 
Development  purposes.  The  Parties  may  choose  to  combine  into  a  single  agreement  the  Development 
Supply Agreement and the Commercial Supply Agreement for a Licensed Product.

b.

Section 8.6.2 shall be deleted and replaced by the following:

Commercial Supply Agreement.  Unless otherwise agreed by the Parties, no later   than
(a)March 31, 2022, with regards to the Lead Product, and (b) no later than twelve (12) months following 
the  effective  date  of  the  Option  Exercise  with  regards  to  every  other  Licensed  Product  to  which  this 
Article  8  (Manufacturing  and  Supply)  applies  in  accordance  with  Section  8.1,  (or  such  other  time  as 
agreed  by  each  Party),  the  Parties  will  negotiate  in  good  faith  and  enter  into  a  commercial  supply 
agreement on reasonable and customary 

1

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: 118F1C3C-AB1A-4635-B0F9-E8EBF3E1D40D

terms for the commercial-grade supply of such Licensed Product by Sarepta to

Roche in the Roche Territory at the Supply Price (the “Commercial Supply Agreement”  and  together 
with the Development Supply Agreement, the “Supply Agreements”), and a related quality agreement, 
which  agreements  will  govern  the  terms  and  conditions  of  the  Manufacturing  and  supply  of  such 
Licensed Product for Commercialization purposes. As noted above, the Parties may choose to combine 
into a single agreement the Development Supply Agreement and the Commercial Supply Agreement for 
a Licensed Product,

3. Effect on Original Agreement. Except as specifically amended by this Eighth Amendment, the Original Agreement will 
remain in full force and effect and is hereby ratified and confirmed. Each future reference to the Original Agreement 
will refer to the Original Agreement as amended by this Eighth Amendment. To the extent a conflict arises between the 
terms of the Original Agreement and this Eighth Amendment, the terms of this Eighth Amendment shall prevail but 
only to the extent necessary to accomplish their intended purpose.

4.

Incorporation. Article 17 of the Original Agreement is hereby incorporated mutatis mutandis into this Amendment.

5. Binding Effect. This Eighth Amendment will be binding upon and inure to the benefit of the Parties and their respective 

permitted successors and assigns.

6. Authority. As of the Eighth Amendment Effective Date, each Party hereby represents and warrants that

(a)  it  has  the  power  and  authority  to  execute  and  deliver  this  Eighth  Amendment,  (b)  the  execution,  delivery,  and 
performance  of  this  Eighth  Amendment  by  it  has  been  duly  authorized  by  all  requisite  corporate  action,  and  (c)  this 
Eighth Amendment has been duly executed and delivered on behalf of such Party and constitutes a legal, valid, and 
binding obligation of such Party and is enforceable against it in accordance with its terms.

7. Governing Law. This Eighth Amendment and all amendments, modifications, alterations, or supplements hereto, and 
the rights of the Parties, will be construed under and governed by the laws of the State of New York, United States, 
exclusive of its conflicts of laws principles.

8. Amendments.  This  Eighth  Amendment  may  not  be  modified  or  amended,  except  by  another  agreement  in  writing 

executed by duly authorized signatories of each Party.

9. Counterparts. This Eighth Amendment may be executed in two or more counterparts, all of which taken together will 
be  regarded  as  one  and  the  same  instrument.  Each  Party  may  execute  this  Eighth  Amendment  in  Adobe™  Portable 
Document  Format  (PDF)  sent  by  electronic  mail.  PDF  signatures  of  authorized  signatories  of  the  Parties  will  be 
deemed  to  be  original  signatures,  will  be  valid  and  binding  upon  the  Parties,  and,  upon  delivery,  will  constitute  due 
execution of this Eighth Amendment.

[Signatures Follow]

2

 
 
 
 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: 118F1C3C-AB1A-4635-B0F9-E8EBF3E1D40D

IN WITNESS WHEREOF, the Parties have executed this Eighth Amendment to License, Collaboration, and Option 

Agreement through their duly authorized representatives.

Sarepta Therapeutics Three, LLC

By: /s/ Adam Hopkin
Name: Adam Hopkin
Title: Manager

F. Hoffmann-La Roche Ltd

By: /s/ Claire Steers
Name: Claire Steers
Title: Global Alliance Director

By: /s/ Franziska Baechler
Name: Franziska Baechler
Title: Attorney-at-Law

[Signature Page To Eighth Amendment To License, Collaboration, and Option Agreement]

 
 
 
 
  
  
  
  
 
 
 
 
 
DocuSign Envelope ID: 09DF38C8-DF3F-4CFE-A990-D755920F43B3

Exhibit 10.65

SEPARATION AGREEMENT AND GENERAL RELEASE

This Separation Agreement and General Release (the “Agreement”) by and

between Gilmore O’Neill (“Employee”) and Sarepta Therapeutics, Inc. (the “Company”), is made effective as of 
the date following Employee’s signature and the expiration of the seven (7) day revocation period without 
revocation (the “Effective Date”) with reference to the following facts:

A. Employee and Company entered into an Employment Agreement (“Employment Agreement”) 

dated June 7, 2018.

B. Pursuant to the Employment Agreement, Employee has been employed by the Company as Executive Vice 

President, Research and Development, Chief Medical Officer since 2018.

C. Employee’s period of employment is ending (without “Cause” as defined in Section 8 of the Employment 

Agreement) on November 30, 2021 (the “Separation Date”).

D. The  Company  wishes  to  continue  to  retain  Employee  as  a  consultant  after  the  Separation  Date,  and 
Employee is willing to provide, the Transition Services (as defined below) as set forth in this Agreement.

E. Employee and the Company want to end their relationship amicably and memorialize the respective 

rights and obligations of the parties including, without limitation, prompt payment of all amounts due 
and owing to the Employee.

NOW, THEREFORE, inconsideration of the agreements hereinafter set forth, and based upon the forgoing 
recitals, each of which are accepted as an integral part of this Agreement, the parties agree, as follows:

1.

2.

Separation Date. Employee acknowledges and agrees that his/her status as an employee of the Company ends 
on the Separation Date. Employee hereby agrees to execute such further document(s) as shall be determined 
by the Company as reasonably necessary or desirable to give effect to the termination of Employee’s status as 
an employee of the Company; provided that such documents shall not be inconsistent with any of the terms of 
this Agreement or any other written agreement signed by both parties.

Severance Benefits. The Company hereby agrees, subject to(i) Employee’s signing of this Agreement and 
not revoking this Agreement pursuant to Section 4(b) below, (ii) Employee’s performance of his/her 
continuing obligations under Sections 11 and 12 of the Employment Agreement, and under the Confidential 
Proprietary Rights and Non-Disclosure Agreement, to provide to Employee the following payments and 
benefits:

(a) Severance Payment. The Company shall pay Employee  severance in an amount equal to the 
aggregate of his i) current base salary for twelve (12) months paid (less applicable tax-related 
deductions and withholdings) paid as a lump sum within two payroll periods following Separation 
Date, and ii) 100% of his/her Target Bonus for FY2021 in the amount of $301,958.83, paid as a 
lump sum within two payroll  periods  following   Separation Date (collectively, the “Severance 
Pay”).

(b) Benefits. Employee will continue to be covered by the Company’s group medical,

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: 09DF38C8-DF3F-4CFE-A990-D755920F43B3

dental and/or vision insurance plans (“Health Plans”) as currently elected by Employee through the 
Separation Date. Regardless of whether Employee executes this Agreement, the Employee’s rights 
to continue coverage under the Health Plans following the Separation Date shall be governed by the 
federal law known as COBRA (the terms regarding COBRA will be set forth in a separate written 
notice). Subject to Employee’s eligibility for, entitlement to, and timely election of continued 
coverage in Health Plans under COBRA, then during the period between December 1, 2021 and 
November 29, 2022 (the “COBRA Support Period”), Employee will be entitled to continued 
participation in Company’s Health Plans and the Company will directly pay the entire COBRA 
premium on the Employee’s behalf. At the end of the COBRA Support Period, the Company will no 
longer be obligated to pay premiums as described, and coverage under the Health Plans will be 
continued only to the extent required by COBRA and only to the extent that Employee timely pays 
the full premium amount required for COBRA continuation coverage of the Health Plans. Employee 
should consult the COBRA materials that will be provided under separate cover for details 
regarding eligibility for, and election of, COBRA continuation coverage of the Health Plans.

(c) Equity. The outstanding equity awards (“Equity Awards”) issued to Employee  as of the Separation 

Date, as attached hereto in Exhibit A, shall continue to vest through the last day of the Transition 
Period (as defined below) in accordance with the Company’s 2018 Equity Incentive Plan, the 
Company’s Amended and Restated 2011 Equity Incentive Plan, and the Company’s 2014 
Employment Commencement Incentive Plan, as amended (collectively, the “Equity Agreement”). 
Employee shall have no less than 12 months from the Separation Date (but in no event beyond the 
remaining term of such Equity Awards) to exercise any Equity Awards already vested as of 
Separation Date. Equity Awards that vest during the Transition Period shall be exercisable during 
the 90-day period following the termination of the Transition Period.  All unvested Equity Awards 
as of the termination of the Consulting Period shall be immediately cancelled and forfeited. 
Employee’s rights with respect to Equity Awards giantdom/her shall be governed by the Equity 
Agreement, provided that nothing therein shall be construed in a manner that reduces the period of 
continued vesting or the period of exercisability identified in this Section 2(b). Employee 
acknowledges and agrees that except as otherwise stated in this paragraph, he/she does not now, and 
will not in the future, have   rights to vest in any other stock options or equity under any stock option 
or other equity plan (of whatever name or kind)  that Employee participated in, or was  eligible to 
participate in,  during his/her employment  with the Company.

(d) Outplacement Services. Should Employee choose to elect them, Company will provide 

outplacement services at a level commensurate with Employee’s position in accordance with the 
Company’s practices as in effect from time to time provided that the cost of such outplacement shall 
not exceed$20,000.00; and provided, further, that such outplacement benefits shall end not later 
than the last day of the second calendar year that begins after the Separation Date.

(e) Section 9(c) of the Employment Agreement. Employee acknowledges and agrees that the 

monetary and other benefits set forth in this Section 2, together with his rights under the 2014 
Employment Commencement Incentive Plan in respect of

 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: 09DF38C8-DF3F-4CFE-A990-D755920F43B3

Employee’s 12,000 Restricted Stock Units, which became fully vested on May 23, 2019, his 
rights as an option holder under the Equity Agreement, and his right to enhanced severance 
benefits in accordance with the Change in Control Severance Agreement, fully satisfy the 
Company’s obligations under Section 9(c) of the Employment Agreement.

3. Final Paycheck; Payment of Accrued Wages and Expenses

(a) Final Paycheck. Employee acknowledges that he is entitled to receive any and all
(a)unpaid regular wages plus any accrued but unused vacation time (totaling
139.12 hours) through the Separation Date; and(b) any other monies under any other form of 
compensation or benefit that was due to Employee in connection with his/her employment with, 
or separation of employment from, the Company, excluding any entitlement under this 
Agreement and the Equity Agreement in relation to his Equity Awards. Employee is entitled to 
these payments regardless of whether Employee executes this Agreement.

(b) Business Expenses. The Company shall reimburse Employee for all outstanding expenses 

incurred prior to the Separation Date that are consistent with the Company’s policies in effect 
from time to time with respect to travel and other business expenses, subject to the Company’s 
written requirements in effect at the time of the Separation Date with respect to reporting and 
documenting such expenses. Employee shall submit for reimbursement all outstanding expenses 
incurred by the Separation Date on or before November 30, 2021. Employee is entitled to these 
payments regardless of whether Employee executes this Agreement.

(c) “Accrued Benefits.”  Employee acknowledges that with the payments described in

(a) and (b) of this Section 3, he will have received all “Accrued Benefits” to which he
is entitled under Section 9(c)(I) of his Employment Agreement.

4. Employee’s Release of the Company. In exchange for Severance Benefits described in Section 2 above, the 

receipt and adequacy of which consideration is hereby acknowledged:

(a) Employee, on his/her own behalf and on behalf of his/her family members, heirs, executors, 

administrators, agents, and assigns, hereby and forever releases the Company and its current and 
former officers, directors, employees, agents, investors, attorneys, affiliates, divisions, and 
subsidiaries, and predecessor and successor corporations and assigns (collectively, the 
“Releasees”) from, and agrees not to sue concerning, or in any manner to institute, prosecute, or 
pursue, any claim, complaint, charge, duty, obligation, or cause of action relating to any matters of 
any kind, whether presently known or unknown, suspected or unsuspected, that Employee  may 
possess against any of the  Releasees arising from any omissions, acts, facts, or damages that have 
occurred up until and including the Effective Date of  this Agreement, including, without 
limitation:

i.

any and all claims relating to or arising from Employee’s employment relationship with the 
Company and the termination of that relationship; any and all claims for wrongful 
discharge of employment; termination in 

 
 
 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: 09DF38C8-DF3F-4CFE-A990-D755920F43B3

violation of public policy; discrimination; harassment; retaliation; breach of contract,

both express and implied; breach of covenant of good faith and fair dealing, both express 
and implied; promissory estoppel; negligent or intentional infliction of emotional distress; 
fraud; negligent or intentional misrepresentation; negligent or intentional interference with 
contract or prospective economic advantage; unfair business practices; defamation;
libel; slander; negligence; personal injury; assault; battery; invasion of privacy; false 
imprisonment; conversion; and disability benefits;
any and all claims for violation of any federal, state, or municipal statute, including, 
but not limited to, Title VII of the Civil Rights Act of 1964, 42
U.S.C. § 2000e et seq., the Americans With Disabilities Act of 1990, 42 U.S.C.
§ 12101 et seq., the Age Discrimination in Employment Act, 29 U.S.C. § 621 et seq. 
(“ADEA”), the Genetic Information Nondiscrimination Act of 2008, 42
U.S.C. § 2000ff et seq., the Family   and Medical Leave Act, 29 U.S.C. § 2601 et seq., 
the Worker Adjustment and Retraining Notification Act (“WARN”), 29 U.S.C. § 2101 et 
seq., the Rehabilitation Act of 1973, 29 U.S.C. § 701 et seq., Executive Order 11246, 
Executive Order 11141, the Fair Credit Reporting Act, 15 U.S.C. § 1681 et seq., and the 
Employee Retirement Income Security Act of 1974 (“ERISA”), 29 U.S.C. § 1001 et seq., 
all as amended; all claims arising out of the Massachusetts Fair Employment Practices 
Act, Mass. Gen. Laws ch. 151B, § 1 et seq., the Massachusetts Civil Rights Act, Mass. 
Gen. Laws ch. 12, §§ 11H and 11I, the Massachusetts Equal Rights Act, Mass. Gen. 
Laws. ch. 93, § 102 and Mass. Gen. Laws ch. 214, § 1C, the Massachusetts Payment of 
Wages Law, Mass. Gen. Laws ch. 149, § 148 et seq. (including, but not limited to, any 
and all claims for wages, bonuses, commissions, vacation pay or any other type of   
compensation), the Massachusetts Right of Privacy Law, Mass. Gen. Laws ch. 214, § 1B, 
the Massachusetts Parental Leave Act, Mass. Gen. Laws ch. 149, § 105D, and the 
Massachusetts Small Necessities Leave Act, Mass. Gen. Laws ch. 149, § 52D, and the 
Massachusetts Family and Medical Leave law, Mass. Gen Laws. ch. 175M, § 1 et seq., 
all as amended;
any and all claims for violation of the federal or any state constitution;
any and all claims arising out of any other laws and regulations relating to 
employment or employment discrimination;
any claim for any loss, cost, damage, or expense arising out of any dispute over the 
non-withholding or other tax treatment of any of the proceeds received by Employee 
as a result of this Agreement;
all claims for breach of contract or of the implied covenant of good faith and fair dealing 
inherent in any contract between the parties;
all claims arising out of the Employment Agreement (excluding any right to enforce the 
indemnification provisions set forth in Sections 20 and 21 thereof); and
any and all claims for reasonable attorneys’ fees and costs incurred in relation to 
this Agreement, not to exceed $7,500.

ii.

iii.

iv.
v.

vi.

vii.

viii.

ix.

(b) Employee acknowledges that he/she is waiving and releasing any rights he/she may have under 

the ADEA, and that this waiver and release is knowing and 

 
 
 
 
 
 
 
DocuSign Envelope ID: 09DF38C8-DF3F-4CFE-A990-D755920F43B3

voluntary. Employee acknowledges that this waiver and release does not apply to any rights or 
claims that may arise under the ADEA after the Effective Date of this Agreement. Employee 
acknowledges that the consideration given for this waiver and release is

in addition to anything of value to which Employee is entitled absent entering this Agreement. 
Employee further acknowledges that he/she has been advised by this writing that: (I) he/she should 
consult with an attorney prior to executing this Agreement; (ii) he/she has been given at least 
twenty-one (21) days within which to consider this Agreement; (iii) he/she has seven(7) days 
following  his/her execution of this Agreement in which to revoke it; (iv) this Agreement shall not 
be effective until after the revocation period has expired and Employee will not receive the benefits 
of Sections 1(a) or 2 of this Agreement until such period has expired  without revocation; and(v) 
nothing in this Agreement prevents or precludes Employee from challenging or seeking a 
determination in good faith of the validity of this waiver under the ADEA, nor does it impose any 
condition precedent, penalties, or costs for doing so, unless specifically authorized by federal law. 
To revoke his/her acceptance of this Agreement, Employee must contact Ryan Brown,
Senior Vice President and General Counsel, by email at RBrown@Sarepta.com
by no later than 5:00 P.M. Eastern Time on or before the seventh (7th) day following
Employee’s signature of this Agreement.

(c)

In giving this release, the Employee expressly waives and relinquishes all rights and benefits under 
any statute or other law, which provides that a general release does not extend to claims which the 
creditor/employee does not know or suspect to exist in his/her   favor at the time of executing the 
release, which if known by him/her must have materially affected his/her settlement with the 
debtor/employer.

(d) THISRELEASE CONTAINSA WAIVER OF RIGHTSUNDER THE MASSACHUSETTSWAGE 

ACT: Employee acknowledges, agrees and understands that employees have certain rights under the 
Massachusetts Wage Act, M.G.L. chapter 149 et seq. (the “MA Wage Act”) regarding when, how, 
and how much they must be paid, including  but not limited to the right to be paid wages earned 
within timeframes provided in the MA Wage Act; that wages include amounts payable to 
employees for hours worked, which may include  salaries, determined and due  commissions, 
overtime pay, tips, and earned vacation or holiday payments due to employees under oral or written 
agreements; and that employees have the right to bring private lawsuits for  violation of the MA 
Wage Act. Employee affirms that he/she has received all wages, including accrued unused vacation, 
and Employee voluntarily and knowingly waives all rights under the MA Wage Act.

(e) Notwithstanding anything in this Section 4 to the contrary, nothing in this Agreement is intended to 
release or waive Employee’s rights (i) under COBRA, (ii) to unemployment insurance and worker’s 
compensation benefits, (iii) to enforce any right under the Equity Agreement, which survives the 
termination of employment, including  the right to receive all vested retirement benefits, or vested 
Equity Awards in accordance with the terms and conditions of the applicable Equity Agreement, 
(iv) to commence an action or proceeding to enforce the terms of this Agreement, the Equity 
Agreement, or the Change in Control Severance Agreement, or (v) to indemnification for actions 
taken by Employee in the course and scope of 

 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: 09DF38C8-DF3F-4CFE-A990-D755920F43B3

employment to the extent provided for in Sections 20 and 21 of the Employment Agreement, in 
applicable  statutes, or the certificates of incorporation and by-laws  of the Company or its affiliates 
or subsidiaries.

 
 
DocuSign Envelope ID: 09DF38C8-DF3F-4CFE-A990-D755920F43B3

(f) Nothing in this Agreement will bar or prohibit Employee from filing   an administrative charge, 
contacting, seeking assistance from or participating in any proceeding before any federal or state 
administrative agency to the extent permitted by applicable federal, state and/or local law, including 
the Massachusetts Commission Against Discrimination and the Equal Employment Opportunity 
Commission. However, Employee nevertheless will be prohibited to the fullest
extent authorized by law from obtaining monetary damages in any proceeding in which Employee 
does so participate.

6. Promise Not to Sue. Employee agrees that he/she will not initiate or encourage any complaint or lawsuit in 
any court arising out of or relating to the claims released under this Agreement, whether on Employee’s 
behalf or in a representative capacity, and will not participate in any such action, whether individually or as a 
member of a class or other collective mechanism. Provided however, that nothing in this Agreement is 
intended to interfere with or discourage Employee from communicating with a governmental or regulatory 
body or official(s) or self-regulatory organization (collectively, “Agency” or “Agencies”) about possible 
violations of law or otherwise providing information to Agencies or participating in Agency investigations or 
proceedings. Except as otherwise prohibited by law (e.g., pursuant to Section 21F of the Securities Exchange 
Act and its corresponding regulations), Employee waives his/her rights to individual relief or monetary 
recovery based on a charge or complaint filed with an Agency.

7. Release of Claims by the Company. In consideration of the promises and undertakings made by 

Employee under this Agreement, including his agreement to provide  through the Transition Period, the 
Company, for itself and on behalf of the other Releasees, hereby and forever releases Employee and 
his/her family members, heirs, executors, administrators, agents, attorneys and assigns(“Employee 
Releasees”) from, and agrees not to sue concerning, or in any manner to institute, prosecute, or pursue, 
any claim, complaint,  charge, duty, obligation, or  cause of  action relating to any Matterson kind, 
whether presently known or unknown, suspected or unsuspected, that the Releasees may possess 
gainsayer the Employee Releasees arising from or relating to Employee’s employment with the Company 
up until and including the Effective Date of this Agreement.

8. Non-Disparagement; Transfer of Company Property. The Company and Employee further agree that:

(a) Non-Disparagement. Employee shall not disparage, criticize or defame the Company, its affiliates 

and their respective affiliates, directors, officers, agents, partners, stockholders, individuals who are 
known by Employee to be employees of the Company, products, services, technology or business, 
either publicly or privately. Nothing in this Section is intended or shall be construed to limit the 
disclosures referred to in Section 5 above. Intern, the Company agrees to direct the members of its 
Executive Committee and Board of Directors not to disparage Employee in any manner likely to be 
harmful to Employee, Employee’s business reputation or personal reputation.

(b) Transfer of Company Property. On or before the Separation Date, Employee shall return to the 
Company all files, memoranda, records, another documents, and any other physical or personal 
property which the property of the Company are and

 
 
 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: 09DF38C8-DF3F-4CFE-A990-D755920F43B3

which he/she has in his/her possession, custody or control at the Separation Date to the Company 
at 215 First Street, Cambridge, MA 02142 to the attention of Alison Nasisi, Vice-President, Chief 
People Officer. All data storage devices shall be returned without deletion, alteration or copying 
by Employee of Company information, data and files.

8. Employee Representations. Employee warrants and represents that (a) he/she has not filed or authorized the 
filing of any complaints, charges or lawsuits (that are subject to release under Section 4 of this Agreement) 
against the Releasees or any affiliate of any Releasee with any governmental agency or court, and that if, 
unbeknownst to Employee, such a complaint, charge or lawsuit has been filed on his/her behalf, he/she will 
use reasonable best efforts to immediately cause it to be withdrawn and dismissed, unless it has been filed 
with a Government Agency and such efforts are prohibited by law and (b) he/she has no known workplace 
injuries or occupational diseases and has been provided and/or has not been denied any leave requested 
under the Family and Medical Leave Act or any similar state law.

9.

Transition Services During the Transition Period. Beginning December 1, 2021, and ending on the earlier 
of March 31, 2022 or the date upon which either party commits a material breach of this Agreement, the 
Equity Agreement, and the Confidential Proprietary Rights and Non-Disclosure Agreement, or the Change 
in Control Severance Agreement (the “Transition Period”), Employee shall be retained by the Company as 
a Consultant, and shall make himself available during  normal business hours, subject to his individual 
commitments, to provide  the following  services to the Company (the “Transition Services”):

(a)

(i)  answer questions with respect to matters that were previously within the scope of Employee’s 
responsibilities, including without limitation, cooperate with assigned Company employees to locate 
files and other materials pertaining to his duties for the Company; and (ii) provide such other 
cooperation as is required of him under Section 12 of the Employment Agreement. For the 
avoidance of doubt, Employee will not be obligated to provide such cooperation in the event that his 
individual interests conflict with those of the Company in respect of the matter for which his 
cooperation is requested. Further in performing the Transition Services, Employee will not be given 
copies of or asked to review or comment on any Confidential Information (as defined in the 
Confidential Proprietary Rights and Non-Disclosure Agreement).

(b) The Company’s requests for Transition Services shall not be unduly burdensome and shall not 
require more than ten (10) hours a week of Employee’s time. The Company shall reimburse 
Employee for reasonable out-of-pocket expenses incurred in providing the Transition Services 
consistent with the Company’s published policies for consultants. Such expenses shall include, 
without limitation, travel costs and, to the extent Employee reasonably believes the separate 
representations warranted in connection   with any internal investigation or administrative, 
regulatory or judicial proceeding, reasonable legal fees.

(c) Consideration. In consideration for agreeing to provide the Transition Services, during the 

Consulting Period, the Employee shall be paid a consulting fee of $400

 
 
 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: 09DF38C8-DF3F-4CFE-A990-D755920F43B3

per hour for no more than ten (10) hours per week, payable monthly in arrears, with the first payment 
beginning thirty (30) days after the Separation Date.

10. Departure Announcements, Inquiries Regarding Employee. The parties agree that the internal statement 

and the external release (collectively, the “Statements”) will not be released until this Agreement has been 
signed by both parties. No other statements will be made by either party concerning the other party. To the 
extent either party receives inquiries from the media, clients, vendors, employees, or any other person 
regarding Employee or his departure from the Company, responses to such inquiries shall be consistent 
with the Statements. Any inquiries by a prospective employer will be directed to the head of Human 
Resources who, in keeping with Company policy, will only confirm the dates of employment and position 
held by Employee during his employment with the Company.

11. No Assignment by Employee. Employee warrants and represents that no portion of any of the matters 

released herein, and no portion of any recovery or settlement to which Employee might be entitled, has been 
assigned or transferred to any other person, firm or corporation not a party to this Agreement, in any 
manner, including by way of subrogation or operation of law or otherwise. If any claim, action, demand or 
suit should be made or instituted against the Company or any other Releasees because of any actual 
assignment, subrogation or transfer by Employee, Employee agrees to indemnify and hold harmless the 
Company and all other Releasees against such claim, action, suit or demand, including necessary expenses 
of investigation, attorneys’ fees and costs. In the event of Employee’s death, this Agreement shall inure to 
the benefit of Employee and Employee’s executors, administrators, heirs, distributees, devisees, and 
legatees. None of Employee’s rights or obligations maybe assigned or transferred by Employee, other than 
Employee’s rights to payments hereunder, which may be transferred only upon Employee’s death by will or 
operation of law.

12. Governing Law. This Agreement shall be construed and enforced in accordance with, and the rights of the 

parties shall be governed by, the laws of the Commonwealth of Massachusetts without regard to conflicts of 
laws principles, or where applicable, United States federal law. The Parties agree that the exclusive forum for 
any legal action arising out of or relating to this Agreement shall be in the state or federal courts located in 
the Commonwealth of Massachusetts.

13. Confidentiality of this Agreement. The parties understand and agree that, except as otherwise required by law, 
judicial order or the directive of a governmental agency, the terms and contents of this Agreement, and the 
contents of the negotiations and discussions resulting in this Agreement, shall be maintained by  both parties 
in confidence and shall not be disclosed to any third party; provided however, that Employee may disclose 
the terms and contents of  this Agreement to his/her spouse and his/her legal and financial advisors, on 
condition that those recipients agree not to disclose same to others.  The Company agrees to hold the terms 
and contents of this Agreement in confidence, and not disclose any of its terms or provisions, except as may 
be required by law, court order or the directive of a governmental agency, and except for a) its employees 
with a need to know for  the purpose of fulfilling the Company’s obligations hereunder, b) its Executive 
Committee and Board of Directors, and c) its legal and financial advisors, provided in each case that such 
recipients agree not to disclose the same to others.

 
 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: 09DF38C8-DF3F-4CFE-A990-D755920F43B3

14. Miscellaneous. This Agreement, together with the Parties’ post-termination rights and obligations set forth in 
Sections 11, 12, 20, 21, 23, 26 and 27 of the Employment Agreement, the Confidential Proprietary Rights and 
Non-Disclosure Agreement, and the Equity Agreement, and the Change in Control Severance Agreement, 
comprise the entire agreement between the parties withered the subject matter hereof and supersede, in their 
entirety, any other agreements between Employee and the Company with regard to the subject matter hereof. 
Employee acknowledges that there are no other agreements, written, oral or implied, and that he/she may not 
rely on any prior negotiations, discussions, representations or agreements. This Agreement may be modified 
only in writing, and such writing must be signed by both parties and recited that it is intended to modify this 
Agreement. This Agreement may be executed in separate counterparts, each of which is deemed to be an 
original and all of which taken together constitute one and the same agreement.

15. Company Assignment and Successors. The Company shall assign its rights and obligations under this 

Agreement to any successor to all or substantially all the business or the assets of the Company (by merger or 
otherwise). This Agreement shall be binding upon and inure to the benefit of the Company and its successors, 
assigns, personnel and legal representatives.

16. Code Section 409A. This Agreement is intended to comply with, or otherwise be exempt from, the applicable 
requirements under Internal Revenue Code Section 409A and the related regulations and guidance issued by 
the Department of the Treasury, as modified   from time to time, including exceptions and exemptions 
provided for therein (“Section 409A”). Accordingly, this Agreement shall be administered, construed, and 
interpreted in a manner consistent with such intent. Without   limiting the foregoing, to the extent required to 
avoid accelerated taxation and/or tax penalties under Section 409A, amounts  reimbursable to Employee 
under this Agreement shall be paid to Employee on or before the last day of the year following the year in 
which the expense was incurred, the amount of expenses eligible for reimbursement (and in-kind benefits 
provided to Employee) during one year may not   affect amounts reimbursable or provided in any subsequent 
year, and the right to reimbursement or in-kind benefits shall not be subject to liquidation or exchange for 
another benefit.

17. Compliance with Continuing Obligations. Employee reaffirms his/her continuing obligations under Sections 
11 and 12 of the Employment Agreement and under the Confidential Proprietary Rights and Non-Disclosure 
Agreement; Employee acknowledges and agrees that the payments and benefits provided by Section 2 of this 
Agreement shall be subject to Employee’s continued  compliance with these obligations; provided  however, 
for purposes of clarity, the Parties agree and acknowledge that the period  of Employee’s post- termination 
non-solicitation and non-competition obligations shall commence on the Separation Date without regard to 
the commencement or  duration of the Transition Period.

18. Defend Trade Secrets Act of 2016. Employee is hereby advised that in accordance with the Defend Trade 
Secrets Act of 2016 that Employee will not be held criminally or civilly liable under any federal or state 
trade secret law for the disclosure of a trade secret that: (a) is made (i) in confidence to a federal, state, or 
local government official, either directly or indirectly, or to an attorney; and (ii) solely for the purpose of 
reporting or  investigating  a

 
 
 
 
 
 
 
 
 
 
 
DocuSign Envelope ID: 09DF38C8-DF3F-4CFE-A990-D755920F43B3

suspected violation of law; or (b) is made in a complaint or other document that is filed under seal in a lawsuit 
or other proceeding.

19. Signatures. Employee and Company agree that this Agreement and any other documents to be delivered in 
connection herewith may be electronically signed, and that any electronic signatures appearing on this 
Agreement or such other documents are the same as handwritten signatures for the purposes of validity, 
enforceability, and admissibility.

To accept the terms of this Separation Agreement and Consulting Agreement and General Release, Employee must sign, date 
and return a copy to Ryan Brown, Senior Vice President and General Counsel, Sarepta Therapeutics, Inc., by email at 
RBrown@Sarepta.com within twenty-one (21) days.

IN WITNESS WHEREOF, the undersigned have caused this Separation Agreement and Consulting Agreement and General 
Release to be duly executed and delivered as of the date indicated next to their respective signatures below.

By: /s/ Dr. Gilmore O’Neill
Name: Dr. Gilmore O’Neill
Title: Executive Vice President, Research and Development, Chief 
Medical Officer

By: /s/ Ryan E. Brown
Name: Ryan E. Brown
Title: Senior Vice President and General Counsel

 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY [**], HAS BEEN OMITTED 
BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO SAREPTA THERAPEUTICS, INC. IF 
PUBLICLY DISCLOSED.

Exhibit 10.66

CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY [**], HAS BEEN OMITTED BECAUSE IT 
IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO SAREPTA THERAPEUTICS, INC. IF PUBLICLY 
DISCLOSED.

Execution Version HIGHLY 
CONFIDENTIAL
Subject to Federal Rules of Evidence 408

AMENDMENT NO. 2 TO LICENSE AGREEMENT

This AMENDMENT NO. 2 TO LICENSE AGREEMENT (“Amendment No. 2”) is

made  and  entered  effective  as  of  November  17,  2021  (the  “Amendment  No.  2  Effective  Date”),  by  and  between  Sarepta 
Therapeutics,  Inc.,  with  offices  at  215  First  Street,  Suite  415,  Cambridge,  MA  02142,  USA  and  ST  International  Holdings 
Two, Inc. (the successor entity to Sarepta International C.V.), with a registered office at 251 Little Falls Drive, Wilmington, DE 
19808,  USA  (collectively,  “Sarepta”)  on  the  one  hand,  and  BioMarin  Leiden  Holding  BV  and  its  subsidiaries,  BioMarin 
Nederlands  BV  and  BioMarin  Technologies  BV  (collectively,  “BioMarin”),  on  the  other  hand.  BioMarin  and  Sarepta  may, 
from time-to-time, be individually referred to as a “Party” and collectively referred to as the “Parties”.

WHEREAS, the Parties entered into that certain License Agreement between Sarepta and BioMarin, dated as of July 
17,  2017,  as  amended  by  that  certain  Amendment  No.  1  to  License  Agreement  dated  as  of  April  14,  2019  (the  “Current 
Agreement”);

WHEREAS,  the  Parties  have  been  engaged  in  certain  contract  disputes  and  proceedings  related  to  the  Current 
Agreement with respect to which Sarepta formally notified BioMarin on September 7, 2021 that Sarepta viewed BioMarin to 
be in material breach of the Current Agreement and commenced a lawsuit against BioMarin in the United States District Court 
for  the  Southern  District  of  New  York  on  September  9,  2021,  Docket  No.  1:21-cv-7534  (the  “Lawsuit”)  alleging  certain 
violations of the Current Agreement;

WHEREAS, pursuant to that certain Settlement Agreement, dated as of the Amendment No. 2 Effective Date, by and 
between the Parties (the “2021 Settlement Agreement”) pursuant to which the Parties have agreed to settle the Lawsuit, the 
Parties have agreed to simultaneously enter into this Amendment No. 2 pursuant to which, in the interest of amicably resolving 
the Lawsuit, BioMarin has agreed to exercise the BioMarin Co-Exclusive License Option, subject to the terms and conditions 
of the Current Agreement, as modified by this Amendment No. 2 (the “Agreement”);

WHEREAS, the Parties desire to amend the Current Agreement as set forth herein; and

WHEREAS, following the Amendment No. 2 Effective Date, the Agreement shall govern the relationship between 

the Parties with respect to the matters set forth herein and therein.

NOW, THEREFORE, in consideration of the foregoing recitals and of the conditions, covenants, and agreements set 
forth below and in the 2021 Settlement Agreement, the sufficiency of which is hereby acknowledged, the Parties hereto agree 
as follows:

120253029_3

 
 
 
 
 
 
 
 
 
 
CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY [**], HAS BEEN OMITTED 
BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO SAREPTA THERAPEUTICS, INC. IF 
PUBLICLY DISCLOSED.

HIGHLY CONFIDENTIAL
Subject to Federal Rules of Evidence 408
Defined Terms. Capitalized terms not otherwise defined in this Amendment No. 2 shall have the meaning ascribed to 
such terms in the Current Agreement or the 2021 Settlement Agreement.

Exercise of BioMarin Co-Exclusive License Option. The Parties hereby agree that, for purposes of the Agreement, 
(a) as of the Amendment No. 2 Effective Date, the BioMarin Co-Exclusive License Option has been irrevocably exercised, 
and  (b)  the  BioMarin  Option  Notice  is  deemed  to  have  been  provided  by  BioMarin  on  the  date  that  is  60  days  prior  to  the 
Amendment No. 2 Effective Date.

Conversion to Co-Exclusive License. Section 2.4.2 of the Current Agreement is hereby deleted in its entirety and 
replaced with the following:

1.

2.

3.

2.4.2. Co-Exclusive License. From and after the Amendment No. 2 Effective Date,
(a)  the  Sarepta  License  under  Section  2.1(b)  (License  Grant  to  Sarepta)  will  be  limited  by  and  subject  to 
BioMarin’s  co-exclusive  right  (co-exclusive  with  Sarepta)  to  practice  and  exploit  the  Licensed  IP  in  the 
Territory in all fields of use during the remainder of the Term, subject to the terms of this Agreement, (b) the 
royalties payable to BioMarin on Net Sales of Royalty Bearing Products will be reduced beginning on July 1, 
2022, as set forth in Section 4.4.1 (Royalty Rates), and (c) the definitions of “Royalty Bearing Product” in 
Section  1.77  (Royalty  Bearing  Product)  and  “Royalty  Term”  in  Section  1.78  (Royalty  Term)  will  be 
automatically replaced by the following definitions, respectively, beginning on July 1, 2022 for all purposes 
of this Agreement:

“Royalty  Bearing  Product”  means,  on  a  country-by-country  and  Product-  by-Product  basis,  all 
Products that are Covered by a Licensed Patent in the applicable country.

“Royalty Term” means, on a country-by-country and Royalty Bearing Product-by-Royalty Bearing 
Product  basis,  the  period  of  time  beginning  on  the  First  Commercial  Sale  Date  and  ending  on  the 
earlier  of  (i)  the  date  the  relevant  Royalty-Bearing  Product  is  no  longer  Covered  by  a  Licensed 
Patent in the applicable country or (ii) March 31, 2024 in the United States and December 31, 2024 
in all other countries in the Territory.

4.

BioMarin Right to License. Section 2.4.3 of the Current Agreement is hereby deleted in its entirety and replaced 
with the following:

1.1.3BioMarin Right to License. From and after the Amendment No. 2 Effective Date, BioMarin may grant 
licenses under the Licensed IP, through multiple tiers, only to any Third Party collaboration partner, regional 
licensee,  manufacturer  or  distributor,  provided  that  (a)  such  licenses  are  consistent  with  the  terms  and 
conditions of this Agreement, and (b) such licenses are limited to 

-2-

120253029_3

 
 
 
 
 
 
 
 
 
CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY [**], HAS BEEN OMITTED 
BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO SAREPTA THERAPEUTICS, INC. IF 
PUBLICLY DISCLOSED.

Products for which BioMarin retains the exclusive right to directly commercialize in the United States and 
the European Union.

HIGHLY CONFIDENTIAL
Subject to Federal Rules of Evidence 408

5.

Royalty-Bearing Products and Scope of Licensed Patents. Section 2.4 of the Current Agreement is hereby 
amended to add the following as a new Section 2.4.4:

1.1.4 Royalty-Bearing Products and Scope of Licensed Patents.

(a)

The Parties hereby agree that: (i) Schedule 1.77(a) sets forth a list of all Products that 
are  Royalty  Bearing  Products  and  have  Net  Sales  in  the  Territory  as  of  the  Amendment  No.  2 
Effective Date under the definition of Royalty Bearing Product that will be in effect through June 
30, 2022;   and
(ii) Schedule 1.77(b) sets forth a list of all Products that have Net Sales in the Territory that the 
Parties  agree  are  Covered  by  an  issued  or  allowed  Licensed  Patent  (as  well  as  the  issued  or 
allowed  Licensed  Patents  that  the  Parties  agree  Cover  such  Products)  on  a  country-by-country 
basis as of the Amendment No. 2 Effective Date and thus would be Royalty Bearing Products in 
such country under the definition of Royalty Bearing Products that will be in effect commencing 
July 1, 2022 if the scope of the issued or allowed Licensed Patents does not change between the 
Amendment No. 2 Effective Date and July 1, 2022.

(b)

The Parties hereby agree that: (i) the issued or allowed Licensed Patents identified at 
Schedule 1.77(b) Cover an Exon 51 Skipping Product, an Exon 53 Skipping Product or an Exon 
45 Skipping Product as of the Amendment No. 2 Effective Date; and (ii) for all purposes of this 
Agreement, no Licensed Patents claiming priority to [**], and issuing after the Amendment No. 2 
Effective  Date,  will  be  deemedto  Cover  an  Exon  51  Skipping  Product,an  Exon  53  Skipping 
Product or an Exon 45 Skipping Product, including, but not limited to [**] upon its issuance. Any 
disputes  regarding  whether  Licensed  Patents  (other  than  Licensed  Patents  claiming  priority  to 
[**],  including,  but  not  limited  to  [**]  upon  its  issuance)  issuing  or  allowed  before  or  after  the 
Amendment  No.  2  Effective  Date  Cover  an  Exon  51  Skipping  Product,  an  Exon  53  Skipping 
Product,  or  an  Exon  45  Skipping  Product  will  be  addressed  as  provided  in  Section  6.4  of  the 
Agreement (Patent Coverage Disputes).

6.

Royalty Rate Adjustments. Section 4.4.1 of the Current Agreement is hereby deleted in its entirety and replaced 
with the following:

4.4.1 Royalty Rates. Subject to the terms and conditions of this Agreement and commencing upon the beginning 

of the first Calendar Quarter, Sarepta will pay 

-3-

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CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY [**], HAS BEEN OMITTED 
BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO SAREPTA THERAPEUTICS, INC. IF 
PUBLICLY DISCLOSED.

to  BioMarin,  on  a  Royalty  Bearing  Product-by-Royalty  Bearing  Product  and  country-  by-country  basis, 
royalties  on  the  Net  Sales  of  Royalty  Bearing  Products  during  the  applicable  Royalty  Term  as  set  forth 
below:

HIGHLY CONFIDENTIAL
Subject to Federal Rules of Evidence 408

Prior to July 1, 2022:

(a) Net Sales of a Royalty Bearing Product in the United 
States in a Calendar Quarter prior to July 1, 2022

(b) Net Sales of a Royalty Bearing Product outside the 
United States in a Calendar Quarter prior to July 1, 2022

On and after July 1, 2022:

(c) Net Sales of a Royalty Bearing Product in the United 
States in a Calendar Quarter on and after July 1, 2022

(d) Net Sales of a Royalty Bearing Product outside the 
United States in a Calendar Quarter on and after July 1, 
2022

Royalty Rate

5%

8%

Royalty Rate

4%

5%

If the manufacture, use, performance or sale of any Royalty Bearing Product is Covered by more than one 
Valid Claim or Patent of the Licensed Patents, multiple royalties will not be due as a result of being so 
covered. Following the expiration of the applicable Royalty Term in a country in the Territory with respect 
to  a  Royalty  Bearing  Product  (but  not  following  an  earlier  termination  of  this  Agreement),  the  Sarepta 
License  with  respect  to  such  Royalty  Bearing  Product  in  such  country  will  be  fully-paid,  irrevocable, 
perpetual  and  royalty-free,  on  a  Royalty  Bearing  Product-by-Royalty  Bearing  Product  and  country-by-
country basis.

Addition  of  Schedules.  Schedule  1.77(a)  and  Schedule  1.77(b)  attached  to  this  Amendment  No.  2  are  hereby 
added to the Agreement as Schedule 1.77(a) and Schedule 1.77(b).

Deletion of Certain Definitions and Provisions.

7.

8.

a.

Section 1.12 of the Current Agreement is hereby deleted in its entirety and 

-4-

120253029_3

 
 
 
 
 
 
 
 
CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY [**], HAS BEEN OMITTED 
BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO SAREPTA THERAPEUTICS, INC. IF 
PUBLICLY DISCLOSED.

HIGHLY CONFIDENTIAL
Subject to Federal Rules of Evidence 408

replaced with the following:

1.12.   [Reserved.]

b.

Section 1.58 of the Current Agreement is hereby deleted in its entirety and replaced with the following:

“Milestone  Event”  means  any  milestone  event  set  forth  in  Section  4.2  (Development  Milestone 
Payments) corresponding to a Milestone Payment.

c.

Section 1.59 of the Current Agreement is hereby deleted in its entirety and replaced with the following:

“Milestone  Payment”  means  any  milestone  payment  set  forth  in  Section  4.2  (Development  Milestone 
Payments) corresponding to a Milestone Event.

d.

Section 4.3 of the Current Agreement is hereby deleted in its entirety and replaced with the following:

4.3.     [Reserved.]

e.

The  text  “[**]”  in  the  instance  where  it  is  used  in  Section  4.4.3(b)  of  the  Current  Agreement  is  hereby 
deleted and replaced with “same up-front and development milestone payments.” The text “[**],” in the 
instance where it is used in Section 4.4.3(b) of the Current Agreement is hereby deleted and replaced with 
“[**],”. The text “[**],” in each of the two instances where it is used in Section 4.4.3(b) of the Current 
Agreement,  is  hereby  deleted  in  each  instance  from  Section  4.4.3(b)  of  the  Current  Agreement  and 
replaced with [**].”

9.

Current Licensed Patents.

a.

b.

Effective as of the Amendment No. 2 Effective Date, Schedule 1.57 (Licensed Patent Rights) of the Current 
Agreement is hereby deleted in its entirety and replaced with the Schedule 1.57 attached to this Amendment 
No. 2.

BioMarin represents and warrants that Schedule 1.57 attached to this Amendment No. 2 includes all Patents 
in the Territory that are Controlled by BioMarin or its Affiliates as of the Amendment No. 2 Effective Date 
that  are  necessary  or  useful  (or,  with  respect  to  patent  applications,  would  be  necessary  or  useful  if  such 
patent applications were to issue as patents) to research, develop, make, have made, use, sell, offer for sale, 
have sold, import or export any Product in the Territory.

10.

Entire Agreement. Subsection 13.9, entitled “Entire Agreement” shall be deleted in its entirety and replaced by the 
following:

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-5-

 
 
 
 
 
 
 
 
 
 
 
 
 
 
CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY [**], HAS BEEN OMITTED 
BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO SAREPTA THERAPEUTICS, INC. IF 
PUBLICLY DISCLOSED.

HIGHLY CONFIDENTIAL
Subject to Federal Rules of Evidence 408

13.9. Entire Agreement. This Agreement and any amendment hereto, together with its Schedules, 
and the Settlement Agreement, the 2021 Settlement Agreement, and the CDA together set forth the 
entire agreement and understanding of the Parties as to the subject matter hereof and supersede all 
proposals,  oral  or  written,  and  all  other  prior  communications  between  the  Parties  with  respect  to 
such subject matter. In the event of any conflict between a material provision of this Agreement and 
any Exhibit or Schedule hereto, the Agreement and any amendment hereto will control. The Parties 
hereby agree and acknowledge that the letters of correspondence from Sarepta to BioMarin or their 
respective counsel dated September 13, 2018, July 2, 2021, and September 7, 2021, and the letters of 
correspondence from BioMarin to Sarepta dated October 1, 2018 and August 18, 2021, in each case, 
shall  have  no  legal  binding  effect,  and  in  the  event  of  any  conflict,  this  Agreement  and  any 
amendment hereto shall control.

11.

12.

13.

14.

No Other Effect. Except as expressly modified in this Amendment No. 2, the Agreement shall continue in full force 
and  effect  in  accordance  with  its  terms.  The  Parties  agree  and  acknowledge  that  nothing  in  this  Amendment  No.  2 
shall limit either Party’s rights under the Current Agreement.

Representations  and  Warranties.  Each  of  the  Parties  represents  to  the  other  Party  that  all  corporate  formalities 
required to enter into this Amendment No. 2 have been obtained and that each such party has the rights to grant the 
rights and take on the obligations provided in this Amendment No. 2.

Counterparts. This Amendment No. 2 may be executed in any number of counterparts, including by PDF signature 
pages,  each  of  which  shall  be  deemed  an  original,  but  all  of  which  together  shall  constitute  one  and  the  same 
instrument.

Binding Effect. This Amendment No. 2 shall inure to the benefit of and be binding upon the Parties hereto and their 
respective heirs, successors, trustees, transferees and assigns.

[Signatures on next page]

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-6-

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
IN WITNESS WHEREOF, the Parties intending to be bound have caused this Amendment No. 2 to be 

executed by their duly authorized representatives as of the Amendment No. 2 Effective Date.

HIGHLY CONFIDENTIAL
Subject to Federal Rules of Evidence 408

ST International Holdings Two, Inc.

BioMarin Leiden Holding BV

By: /s/ Peter Walsh
Name: Peter Walsh
Title: Sr. Director, Compliance

Sarepta Therapeutics, Inc.
By: /s/ Doug Ingram
Name: Doug Ingram
Title: President & CEO

By: /s/ G. Eric Davis
Name: G. Eric Davis
Title: Director

BioMarin Nederlands BV
By: /s/ G. Eric Davis
Name: G. Eric Davis
Title: Director

BioMarin Technologies BV

By: /s/ G. Eric Davis
Name: G. Eric Davis
Title: Director

Schedule 1.57 Licensed Patents

[**]

Schedule 1.77(a)

[**]

Schedule 1.77(b)

[**]

 
 
 
  
  
  
  
  
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
Sarepta Therapeutics, Inc.
Subsidiaries of the Registrant

Name 
Sarepta Securities Corp.
ST International Holdings Two, Inc.
Sarepta Therapeutics Three, LLC

Jurisdiction of Incorporation
Massachusetts, USA
Delaware, USA
Delaware, USA

EXHIBIT 21.1

 
 
 
 
Consent of Independent Registered Public Accounting Firm

EXHIBIT 23.1

  We consent to the incorporation by reference in the registration statements (No. 333-234698) on Form S-3ASR and (Nos. 333-101826, 333-172823, 
333-175031,  333-192287,  333-199037,  333-209710,  333-213022,  333-34047,  333-49994,  333-49996,  333-221271,  333-228719,  333-233715  and  333-
240996)  on  Form  S-8  of  our  report  dated  March  1,  2022,  with  respect  to  the  consolidated  financial  statements  of  Sarepta  Therapeutics,  Inc.  and  the 
effectiveness of internal control over financial reporting.

/s/ KPMG LLP

Boston, Massachusetts
March 1, 2022

  
 
 
 
 
EXHIBIT 31.1

I, Douglas S. Ingram, certify that:

1. I have reviewed this Annual Report on Form 10-K of Sarepta Therapeutics, Inc., (the “Registrant”);

CERTIFICATION

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the 

statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the 

financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in 

Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for 
the Registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to 

ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, 
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our 
supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes 
in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this report our conclusions about the 

effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent 
fiscal quarter (the Registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, 
the Registrant’s internal control over financial reporting; and

5. The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to 

the Registrant’s auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably 

likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control 

over financial reporting.

March 1, 2022

/s/ Douglas S. Ingram
Douglas S. Ingram
President and Chief Executive Officer
(Principal Executive Officer)

  
  
  
  
  
EXHIBIT 31.2

I, Ian M. Estepan, certify that:

1. I have reviewed this Annual Report on Form 10-K of Sarepta Therapeutics, Inc., (the “Registrant”);

CERTIFICATION

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the 

statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the 

financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in 

Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for 
the Registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to 

ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, 
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our 
supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes 
in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this report our conclusions about the 

effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent 
fiscal quarter (the Registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, 
the Registrant’s internal control over financial reporting; and

5. The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to 

the Registrant’s auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably 

likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control 

over financial reporting.

March 1, 2022

/s/  Ian M. Estepan 
Ian M. Estepan
Executive Vice President, Chief Financial Officer
(Principal Financial and Accounting Officer)

 
  
  
  
 
CERTIFICATION PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
(18 U.S.C. SECTION 1350)

EXHIBIT 32.1

I, Douglas S. Ingram, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the 
Annual Report of Sarepta Therapeutics, Inc. on Form 10-K for the fiscal year ended December 31, 2021, fully complies with the requirements of Section 
13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Annual Report on Form 10-K fairly presents, in all material 
respects, the financial condition and results of operations of Sarepta Therapeutics, Inc.

March 1, 2022

   /s/ Douglas S. Ingram
   Douglas S. Ingram
   President and Chief Executive Officer 
   (Principal Executive Officer)

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to Sarepta Therapeutics, 

Inc. and will be retained by Sarepta Therapeutics, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

This certification accompanies this Report on Form 10-K pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the 

extent required by such Act, be deemed filed by Sarepta Therapeutics, Inc. for purposes of Section 18 of the Securities Exchange Act of 1934, as amended 
(the “Exchange Act”). 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 that Sarepta Therapeutics, Inc. specifically incorporates it by reference.

 
 
  
  
  
 
 
CERTIFICATION PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
(18 U.S.C. SECTION 1350)

EXHIBIT 32.2

I, Ian M. Estepan, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the 

Annual Report of Sarepta Therapeutics, Inc. on Form 10-K for the fiscal year ended December 31, 2021, fully complies with the requirements of Section 
13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Annual Report on Form 10-K fairly presents, in all material 
respects, the financial condition and results of operations of Sarepta Therapeutics, Inc.

March 1, 2022

   /s/  Ian M. Estepan
   Ian M. Estepan
   Executive Vice President, Chief Financial Officer
   (Principal Financial and Accounting Officer)

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to Sarepta Therapeutics, 

Inc. and will be retained by Sarepta Therapeutics, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

This certification accompanies this Report on Form 10-K pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the 

extent required by such Act, be deemed filed by Sarepta Therapeutics, Inc. for purposes of Section 18 of the Securities Exchange Act of 1934, as amended 
(the “Exchange Act”). 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 that Sarepta Therapeutics, Inc. specifically incorporates it by reference.