Quarterlytics / Healthcare / Biotechnology / CRISPR

CRISPR

crsp · NASDAQ Healthcare
Claim this profile
Ticker crsp
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Employees 201-500
← All annual reports
FY2021 Annual Report · CRISPR
Sign in to download
Loading PDF…
Transformative Gene-Based Medicines 

For Serious Human Diseases

2021 AN N UAL R E P O RT

We are rapidly translating our specific,  

efficient and versatile CRISPR/Cas9  

gene-editing platform into therapies  

to treat hemoglobinopathies, cancer,  

diabetes and other diseases

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 001-37923 

CRISPR THERAPEUTICS AG

(Exact name of Registrant as specified in its Charter) 

Switzerland
(State or other jurisdiction of
incorporation or organization)
Baarerstrasse 14
6300 Zug, Switzerland
(Address of principal executive offices)

Not Applicable
(Zip Code)
Registrant’s telephone number, including area code: +41 (0)41 561 32 77

Not Applicable
(I.R.S. Employer
Identification No.)

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

Title of each class
Common Shares, nominal value CHF 0.03

Trading
Symbol(s)
CRSP

Name of each exchange on which registered
The Nasdaq Global 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

☐
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 common shares held by non-affiliates of the Registrant was approximately $11.4 billion, based on the closing price 
on the Nasdaq Global Market of the Registrant’s common shares on June 30, 2021 (the last trading day of the Registrant’s second fiscal quarter of 
2021).
The number of the Registrant’s common shares outstanding as of February 11, 2022 was 77,067,587. 

   Smaller reporting company ☐

   
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the Registrant’s Definitive Proxy Statement relating to the 2022 Annual General Meeting of Shareholders, which the Registrant intends to
file with the Securities and Exchange Commission pursuant to Regulation 14A within 120 days after the end of the Registrant’s fiscal year ended 
December 31, 2021, are incorporated by reference into Part III of this Report.

Table of Contents

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

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

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

Exhibits, Financial Statement Schedules
Form 10-K Summary

Page

1
56
108
108
108
108

109
110
110
122
122
122
123
125
125

126
126
126
126
126

127
131

PART I
Item 1.
Item 1A.
Item 1B.
Item 2.
Item 3.
Item 4.

PART II
Item 5.

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

PART III
Item 10.
Item 11.
Item 12.
Item 13.
Item 14.

PART IV
Item 15.
Item 16.

i

Risk Factor Summary 

Our business is subject to a number of risks and uncertainties of which you should be aware before making an investment 
decision in our business. These risks are discussed more fully in the “Risk Factors” section of this Annual Report on Form 10-K. 
These risks include, but are not limited to, the following:

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

We have incurred significant operating losses since our inception and anticipate that we will incur continued losses for the
foreseeable future.

We will need to raise substantial additional funding, which will dilute our shareholders. If we are unable to raise capital 
when needed, we would be forced to delay, reduce or eliminate some of our product development programs or 
commercialization efforts.

We are early in our development efforts. It will be many years before we or our collaborators commercialize a product 
candidate, if ever. If we are unable to advance our product candidates to clinical development, obtain regulatory approval
and ultimately commercialize our product candidates, or experience significant delays in doing so, our business will be
materially harmed.

Our CRISPR/Cas9 gene editing product candidates are based on a new gene-editing technology, which makes it difficult 
to predict the time and cost of development and of subsequently obtaining regulatory approval, if at all. There have only 
been a limited number of clinical trials of product candidates based on gene editing technology and no gene editing 
products have been approved in the United States or in the European Union.

The U.S. Food and Drug Administration, or FDA, the National Institutes of Health, or NIH, and the European Medicines 
Agency, or EMA, have demonstrated caution in their regulation of gene therapy treatments, and ethical and legal concerns 
about gene therapy and genetic testing may result in additional regulations or restrictions on the development and 
commercialization of our product candidates, which may be difficult to predict.

If any of the product candidates we may develop or the delivery modes we rely on cause undesirable side effects, it could 
delay or prevent their regulatory approval, limit the commercial potential or result in significant negative consequences 
following any potential marketing approval. 

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

Our business may be adversely affected by the ongoing coronavirus pandemic, including the emergence of additional 
variants. 

Positive results from early preclinical studies or preliminary results from clinical trials of our product candidates are not 
necessarily predictive of the results of later preclinical studies and any future clinical trials of our product candidates. If 
we cannot replicate the positive results from our earlier preclinical studies of our product candidates in our later 
preclinical studies, clinical trials and future clinical trials, we may be unable to successfully develop, obtain regulatory 
approval for and commercialize our product candidates.

Adverse public perception of gene editing and cellular therapy products may negatively impact demand for, or regulatory
approval of, our product candidates.

The commercial success of any of our product candidates will depend upon its degree of market acceptance by physicians, 
patients, third-party payors and others in the medical community.

We face significant competition in an environment of rapid technological change. Our competitors may achieve regulatory
approval before us or develop therapies that are more advanced or effective than ours, which may harm our business and 
financial condition, and our ability to successfully market or commercialize our product candidates.

Our collaborators and strategic partners may control aspects of our clinical trials, which could result in delays and other 
obstacles in the commercialization of our proposed products and materially harm our results of operations.

Gene-editing products are novel and may be complex and difficult to manufacture. We could experience manufacturing
problems that result in delays in the development or commercialization of our product candidates or otherwise harm our 
business.

If we are unable to obtain or protect intellectual property rights related to our proprietary gene-editing technology and 
product candidates, we may not be able to compete effectively in our markets.

The intellectual property landscape around gene editing technology, including CRISPR/Cas9, is highly dynamic, and third 
parties may initiate legal proceedings alleging that the patents that we in-license or own are invalid or that we are 
infringing, misappropriating, or otherwise violating their intellectual property rights, the outcome of which would be
uncertain and could have a material adverse effect on the success of our business.

ii

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

“CRISPR Therapeutics®” standard character mark and design logo, “CTX001TM,” “CTX110TM,” “CTX120TM,” “CTX130TM,” 

and “CRISPR TXTM” are trademarks and registered trademarks of CRISPR Therapeutics AG. All other trademarks and registered 
trademarks contained in this Annual Report on Form 10-K are the property of their respective owners. Solely for convenience, 
trademarks, service marks and trade names referred to in this Annual Report on Form 10-K may appear without the ® or ™ symbols
and any such omission is not intended to indicate waiver of any such rights.

Special Note Regarding Forward-Looking Statements and Industry Data

This Annual Report on Form 10-K contains “forward-looking statements” that involve substantial risks and uncertainties. All 
statements, other than statements of historical facts, contained in this Annual Report on Form 10-K are forward-looking statements.
These statements are often identified by the use of words such as “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” 
“intend,” “may,” “plan,” “predict,” “project,” “potential,” “will,” “would” or the negative or plural of these words or similar 
expressions or variations, although not all forward-looking statements contain these identifying words. Forward-looking statements in
this Annual Report on Form 10-K include, but are not limited to, statements about:

•

•

•

•

•

•

•

•

•

•

•

•

the safety, efficacy and clinical progress of our various clinical programs, including those for CTX001TM, CTX110 TM, 
CTX120 TM and CTX130 TM;

the status of clinical trials, development timelines and discussions with regulatory authorities related to product candidates
under development by us and our collaborators;

the initiation, timing, progress and results of our preclinical studies and clinical trials, including our ongoing clinical trials 
and any planned clinical trials for CTX001, CTX110, CTX120, CTX130 and VCTX210, and our research and 
development programs, including delays or disruptions in clinical trials, non-clinical experiments and investigational new
drug application-enabling studies;

the actual or potential benefits of FDA designations, such as orphan drug, fast track and regenerative medicine advanced 
therapy, or such European equivalents, including the PRIority MEdicines, or PRIME, designation; 

our ability to advance product candidates into, and successfully complete, clinical trials;

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

the rate and degree of market acceptance of our product candidates and the success of competing therapies that are or 
become available;

our plan to consolidate our various office and laboratory locations in the greater Boston area into a single location and to 
validate our cell therapy manufacturing facility to enable us to produce clinical cell therapy product supply in the future;

our intellectual property coverage and positions, including those of our licensors and third parties as well as the status and 
potential outcome of proceedings involving any such intellectual property;

our anticipated expenses, ability to obtain funding for our operations and the sufficiency of our cash resources; 

the therapeutic value, development, and commercial potential of CRISPR/Cas9 gene-editing technologies and therapies;
and

potential impacts due to the coronavirus pandemic such as delays, interruptions or other adverse effects to clinical trials, 
delays in regulatory review, manufacturing and supply chain interruptions, adverse effects on healthcare systems and 
disruption of the global economy, and the overall impact of the coronavirus pandemic on our business, financial condition 
and results of operations.

Any forward-looking statements in this Annual Report on Form 10-K reflect our current views with respect to future events or 
to our future financial performance and involve known and unknown risks, uncertainties and assumptions that could cause our actual
results and the timing of certain events to differ materially from future results expressed or implied by the forward-looking statements.
Factors that could cause or contribute to such differences include, but are not limited to, those identified herein, and those discussed in
the section titled “Risk Factors,” set forth in Part I, Item 1A of this Annual Report on Form 10-K. You should not rely upon forward-
looking statements as predictions of future events. Such forward-looking statements speak only as of the date of this report. Our 
forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures or 
investments we may make or enter into.

iii

You should read this Annual Report on Form 10-K and the documents that we have filed as exhibits to this Annual Report on

Form 10-K completely and with the understanding that our actual future results, performance or achievements may be materially
different from what we expect. Except as required by law, we undertake no obligation to update any forward-looking statements to
reflect events or circumstances after the date of such statements. 

This Annual Report on Form 10-K includes statistical and other industry and market data, which we obtained from our own 
internal estimates and research, as well as from industry and general publications and research, surveys, and studies conducted by third 
parties. Industry publications, studies, and surveys generally state that they have been obtained from sources believed to be reliable, 
although they do not guarantee the accuracy or completeness of such information. While we believe that each of these studies and 
publications is reliable, we have not independently verified market and industry data from third-party sources. While we believe our 
internal company research is reliable and the market definitions are appropriate, neither such research nor these definitions have been 
verified by any independent source.

iv

Item 1. Business.

Overview

PART I

BUSINESS

We are a leading gene editing company focused on the development of CRISPR/Cas9-based therapeutics. CRISPR/Cas9 stands 
for Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)/CRISPR-associated protein 9 (Cas9) and is a revolutionary 
technology for gene editing, the process of precisely altering specific sequences of genomic DNA. We aim to apply this technology to
disrupt, delete, correct and insert genes to treat genetically-defined diseases and to engineer advanced cellular therapies. We believe 
that our scientific expertise, together with our gene-editing approach, may enable an entirely new class of highly effective and 
potentially curative therapies for patients with both rare and common diseases for whom current biopharmaceutical approaches have 
had limited success. Our most advanced programs target the genetically-defined diseases transfusion-dependent beta thalassemia, or 
TDT, and severe sickle cell disease, or SCD, two hemoglobinopathies with high unmet medical need. We are also progressing several
gene-edited allogeneic cell therapy programs, beginning with three allogeneic chimeric antigen receptor T cell, or CAR-T candidates 
for the treatment of hematological and solid tumor cancers, as well as an investigational, allogeneic, gene-edited, immune-evasive, 
stem cell-derived therapy for the treatment of type 1 diabetes, or T1D. In addition, we are advancing several programs leveraging in
vivo editing approaches.

The use of CRISPR/Cas9 for gene editing was derived from a naturally occurring viral defense mechanism in bacteria and was 
pioneered by one of our scientific founders, Dr. Emmanuelle Charpentier, the Acting and Founding Director of the Max Planck Unit 
for the Science of Pathogens in Berlin, Germany. Dr. Charpentier and her collaborators published work elucidating the mechanism by 
which the Cas9 endonuclease, a key component of CRISPR/Cas9, can be programmed to cut double-stranded DNA at specific
locations. Dr. Charpentier and her collaborator, Dr. Jennifer Doudna of the University of California, Berkeley, shared the 2020 Nobel 
Prize in Chemistry for their groundbreaking work. We have acquired rights to the intellectual property encompassing CRISPR/Cas9 
and related technologies from Dr. Charpentier and continue to strengthen our intellectual property estate through our own research and 
additional in-licensing efforts, furthering our leadership in the development of CRISPR/Cas9-based therapeutics. 

Our product development and partnership strategies are designed to exploit the full potential of the CRISPR/Cas9 platform 

while maximizing the probability of successfully developing our product candidates. For our most advanced product candidates, we 
have taken an ex vivo approach in which we edit cells outside of the human body using CRISPR/Cas9 before administering them to
the patient. We are also pursuing select in vivo applications, in which we deliver the CRISPR/Cas9-based therapeutic directly to target 
cells within the human body.

Hemoglobinopathies

Our lead product candidate, CTX001, is an investigational ex vivo CRISPR gene-edited therapy that is being evaluated for 

patients suffering from TDT or severe SCD in which a patient’s hematopoietic stem cells are engineered to produce high levels of 
fetal hemoglobin (HbF; hemoglobin F) in red blood cells. HbF is a form of the oxygen-carrying hemoglobin that is naturally present at 
birth and is then replaced by the adult form of hemoglobin. The elevation of HbF by CTX001 has the potential to eliminate transfusion 
requirements for TDT patients and painful and debilitating vaso-occlusive crises for SCD patients. CTX001 is being developed under 
a joint development and commercialization agreement between us and Vertex Pharmaceuticals Incorporated, or Vertex. 

Beta Thalassemia

We and Vertex are investigating CTX001 in a Phase 3 open-label clinical trial, CLIMB THAL-111, that is designed to assess
the safety and efficacy of a single dose of CTX001 in patients ages 12 to 35 with TDT, including beta zero/beta zero subtypes. The 
first two patients in the trial were treated sequentially and, following data from the initial two patients indicating successful
engraftment and an acceptable safety profile, the trial opened for concurrent dosing. CLIMB THAL-111 is designed to follow patients 
for approximately two years after infusion. Each patient will be asked to participate in a long-term, open-label follow-up trial,
CLIMB-131, to evaluate the safety and efficacy of CTX001 in patients who received CTX001. CLIMB-131 is designed to follow 
participants for up to 15 years after CTX001 infusion. Enrollment is complete for CLIMB THAL-111.

In the second quarter of 2021, at the European Hematology Association Congress, we presented updated clinical data from the 

first fifteen patients with TDT treated with CTX001 who had reached at least three months of follow-up after CTX001 dosing. For 
additional information regarding the clinical data, please see “Business—Our Lead Hemoglobinopathies Product Candidate—
CTX001.”

1

Sickle Cell Disease

We and Vertex are also investigating CTX001 in a Phase 3 open-label clinical trial, CLIMB SCD-121, that is designed to assess 
the safety and efficacy of a single dose of CTX001 in patients ages 12 to 35 with severe SCD. Similar to the trial in TDT, the first two 
patients in the trial were treated sequentially and, following data from the initial two patients indicating successful engraftment and an
acceptable safety profile, the trial opened for concurrent dosing. CLIMB SCD-121 is designed to follow patients for approximately 
two years after infusion. Each patient will be asked to participate in a long-term, open-label follow-up trial, CLIMB-131, to evaluate
the safety and efficacy of CTX001 in patients who received CTX001. CLIMB-131 is designed to follow participants for up to 15 years 
after CTX001 infusion. Enrollment is complete for CLIMB SCD-111.

In the second quarter of 2021, at the European Hematology Association Congress, we presented updated clinical data from the 

first seven patients with SCD treated with CTX001 who had reached at least three months of follow-up after CTX001 dosing. For 
additional information regarding the clinical data, please see “Business—Our Lead Hemoglobinopathies Product Candidate—
CTX001.”

Regulatory Designations— CTX001

CTX001 has been granted a number of regulatory designations from the FDA, including Regenerative Medicine Advanced 
Therapy, or RMAT, Fast Track, Orphan Drug, and Rare Pediatric Disease designations for the treatment of both TDT and SCD. 
CTX001 has also been granted Orphan Drug Designation from the European Commission, as well as the PRIority MEdicines, or 
PRIME, designation from EMA for the treatment of both TDT and SCD. For additional information regarding the impact of 
regulatory designations, please see “Business—Government Regulations.”

Immuno-Oncology

We believe CRISPR/Cas9 has the potential to create the next generation of CAR-T cell therapies that may have a superior 
product profile compared to current autologous therapies and allow accessibility to broader patient populations. Drawing from the ex 
vivo gene-editing capabilities gained through our lead programs, we are advancing several immuno-oncology cell therapy programs,
including three programs in clinical trials. 

CTX110. Our lead immuno-oncology product candidate, CTX110, is a healthy donor-derived gene-edited allogeneic CAR-T 

investigational therapy targeting Cluster of Differentiation 19, or CD19. CTX110 is being investigated in an ongoing Phase 1 single-
arm, multi-center, open-label clinical trial, CARBON, that is designed to assess the safety and efficacy of several dose levels of 
CTX110 in adult patients with relapsed or refractory B-cell malignancies who have received at least two prior lines of therapy. 
CTX110 has been granted RMAT designation by the FDA.

In the fourth quarter of 2021, we released updated clinical data from the ongoing CARBON trial for 26 patients treated with 

CTX110 who had reached at least 28 days of follow-up. For additional information regarding the clinical data, please see “Business—
Our Lead Immuno-Oncology Product Candidate—CTX110.”

CTX120. CTX120 is a healthy donor-derived gene-edited allogeneic CAR-T investigational therapy targeting B-cell maturation 

antigen, or BCMA. CTX120 is being investigated in an ongoing Phase 1 single-arm, multi-center, open-label clinical trial that is
designed to assess the safety and efficacy of several dose levels of CTX120 for the treatment of relapsed or refractory multiple 
myeloma. CTX120 has received Orphan Drug Designation from the FDA.

CTX130. CTX130 is a healthy donor-derived gene-edited allogeneic CAR-T investigational therapy targeting Cluster of 
Differentiation 70, or CD70, an antigen expressed on various solid tumors and hematologic malignancies. CTX130 is being developed 
for the treatment of both solid tumors, such as renal cell carcinoma, and T-cell and B-cell hematologic malignancies. CTX130 is being 
investigated in two ongoing independent Phase 1 single-arm, multi-center, open-label clinical trials that are designed to assess the
safety and efficacy of several dose levels of CTX130 for the treatment of relapsed or refractory renal cell carcinoma and various types
of lymphoma, respectively. CTX130 for the treatment of T-cell lymphoma has received Orphan Drug Designation from the FDA.

Regenerative Medicine

To further expand the applications of our ex vivo gene-editing expertise, we have increased our efforts in the field of 

regenerative medicine. Regenerative medicine, or the use of stem cells to repair or replace tissue or organ function lost due to disease,
damage or age, holds the potential to treat both rare and common diseases. We are pursuing gene-editing approaches to allow 
allogeneic use of stem cell-derived therapies by enabling immune evasion, improving existing cell function and directing cell fate
using CRISPR/Cas9.

2

Our first major effort in this area is in diabetes, and we and ViaCyte, Inc., or ViaCyte, are advancing multiple programs as part 
of a strategic collaboration for the discovery, development and commercialization of gene-edited stem cell therapies for the treatment 
of diabetes. We believe the combination of ViaCyte’s stem cell capabilities and our gene-editing capabilities has the potential to
enable a beta-cell replacement product candidate that may deliver durable benefit to patients without requiring concurrent immune 
suppression.

VCTX210. VCTX210 is an investigational, allogeneic, gene-edited, immune-evasive, stem cell-derived product candidate for the 
treatment of T1D developed by applying our gene-editing technology to ViaCyte’s proprietary stem cell capabilities. We and ViaCyte 
are investigating VCTX210 in an ongoing Phase 1 clinical trial that is designed to assess VCTX210’s safety, tolerability, and immune 
evasion in patients with T1D.

In Vivo

In addition to our ex vivo programs, we are pursuing a number of in vivo gene-editing programs. Our initial in vivo applications

target diseases of the liver, lung, muscle and central nervous system and leverage well-established delivery technologies for gene-
based therapeutics, such as lipid nanoparticle-based delivery vehicles, or LNPs, and adeno-associated viral vectors, or AAV vectors.

Partnerships

Given the numerous potential therapeutic applications for CRISPR/Cas9, we have partnered strategically to broaden the 
indications we can pursue and accelerate development of programs by accessing specific technologies and/or disease-area expertise.
We have formed broad strategic partnerships to develop gene editing-based therapeutics in specific disease areas. For additional 
information regarding certain of these partnerships, please see “Business—Strategic Partnerships and Collaborations.”

Vertex. We established our initial collaboration agreement in 2015 with Vertex, which focused on TDT, SCD, cystic fibrosis and 

select additional indications. In December 2017, we entered into a joint development and commercialization agreement with Vertex 
pursuant to which, among other things, we are co-developing and preparing to co-commercialize CTX001 for TDT and SCD. In April
2021, we and Vertex agreed to amend and restate our existing joint development and commercialization agreement, pursuant to which, 
among other things, we will continue to develop and prepare to commercialize CTX001 for TDT and SCD in partnership with Vertex. 
We also entered into a strategic collaboration and license agreement with Vertex in June 2019 for the development and 
commercialization of products for the treatment of Duchenne muscular dystrophy, or DMD, and myotonic dystrophy type 1, or DM1. 

ViaCyte. We entered into a research and collaboration agreement in September 2018 with ViaCyte to pursue the discovery, 

development and commercialization of gene-edited allogeneic stem cell therapies for the treatment of diabetes and in July 2021, we
entered into a joint development and commercialization agreement with ViaCyte. Under the joint development and commercialization
agreement, we and ViaCyte will jointly develop and commercialize product candidates and shared products for use in the treatment of 
diabetes type 1, diabetes type 2 and insulin dependent/requiring diabetes throughout the world.

Bayer. In the fourth quarter of 2019, we entered into a series of transactions pursuant to which we and Bayer Healthcare LLC, or 

Bayer, terminated our 2015 agreement, which had created the joint venture Casebia Therapeutics Limited Liability Partnership, or 
Casebia, to discover, develop and commercialize CRISPR/Cas9 gene-editing therapeutics to treat the genetic causes of bleeding
disorders, autoimmune disease, blindness, hearing loss and heart disease. In connection thereto, Casebia became a wholly-owned 
subsidiary of ours. We and Bayer also entered into a new option agreement pursuant to which Bayer has an option to co-develop and 
co-commercialize two products for the diagnosis, treatment, or prevention of certain autoimmune disorders, eye disorders or 
hemophilia A disorders for a specified period of time, or, under certain circumstances, exclusively license such optioned products.

Nkarta. In the second quarter of 2021, we entered into a research and collaboration agreement with Nkarta, Inc., or Nkarta, to

bring together our gene editing technology and T-cell expertise with Nkarta’s leading natural killer, or NK, cell discovery,
development and manufacturing capabilities. Under the collaboration, we and Nkarta are co-developing and co-commercializing two
donor-derived, gene-edited CAR-NK cell product candidates, one of which targets CD70, and a product candidate combining NK and 
T cells.

Capsida. In the second quarter of 2021, we entered into a strategic collaboration agreement with Capsida Biotherapeutics, Inc., 
or Capsida, to develop in vivo gene editing therapies delivered with engineered AAV vectors for the treatment of amyotrophic lateral 
sclerosis, or ALS, and Friedreich’s ataxia. Under the agreement, we lead research and development of the Friedreich’s ataxia program 
and perform gene-editing activities for both programs, and Capsida leads research and development of the ALS program and conducts 
capsid engineering for both programs. Capsida’s high-throughput AAV engineering platform aims to generate capsids optimized to 
target specific tissue types and limits transduction of tissues and cell types that are not relevant to the target disease, potentially 

3

improving the activity and tolerability of our gene editing investigational therapies. We and Capsida each have the option to co-
develop and co-commercialize the program that the other leads.

Our mission is to create transformative gene-based medicines for serious human diseases. We believe that our highly

experienced team, together with our scientific expertise, product development strategy, partnerships and intellectual property, position 
us as a leader in the development of CRISPR-based therapeutics.

Gene Editing Background

There are thousands of diseases caused by aberrant DNA sequences. Traditional small molecule and biologic therapies have had 

limited success in treating many of these diseases because they fail to address the underlying genetic causes. Newer approaches such
as RNA therapeutics and viral gene therapy more directly target the genes related to disease, but each has clear limitations. RNA-
based therapies, such as mRNA and siRNA, face challenges with repeat dosing and related toxicities. Non-integrating viral gene
therapy platforms, such as AAV, may have limited durability because they do not permanently change the genome and have limited 
efficacy upon re-administration due to resulting immune responses. Integrating viral gene therapy platforms, such as lentivirus,
permanently alter the genome but do so randomly, which leads to the potential for undesirable mutations. Additionally, cells may
recognize the transduced genes as foreign and respond by reducing their expression, limiting their efficacy. Thus, while our 
understanding of genetic diseases has increased tremendously since the mapping of the human genome, our ability to treat them
effectively has been limited.

We believe gene editing has the potential to enable a next generation of therapeutics and provide potentially curative therapies

to many genetic diseases through precise gene modification. Furthermore, the ability to alter DNA sequences precisely has 
applications beyond the treatment of genetically-defined diseases. CRISPR/Cas9 gene editing could also enable the engineering of 
cell-based therapies to make them more efficacious, safer and available to a broader group of patients. Cell therapies have already 
begun to make a meaningful impact in certain diseases and gene editing could help accelerate that progress across diverse disease
areas, including oncology and diabetes.

The process of gene editing involves precisely altering DNA sequences within the genomes of cells using enzymes to cut the

DNA at specific locations. After a cut is made, natural cellular processes repair the DNA to either silence or correct undesirable
sequences, potentially reversing their negative effects. Importantly, because the genome itself is modified in this process, the change is 
permanent in the patient. Earlier generations of gene-editing technologies, such as zinc finger nucleases, or ZFNs, transcription-
activator like effector nucleases, or TALENs, and meganucleases, rely on engineered protein-DNA interactions to govern the location
of editing. While these systems were an important first step to demonstrate the potential of gene editing, their development has been
challenging in practice due to the complexity of engineering protein-DNA interactions. In contrast, CRISPR/Cas9 is guided by RNA-
DNA interactions, which are more predictable and straightforward to engineer and apply. As a result, we have continued to invest in 
broadening our CRISPR platform so we can employ a variety of technologies as appropriate.

The CRISPR/Cas9 Technology

CRISPR/Cas9 evolved as a naturally occurring defense mechanism that protects bacteria against viral infections. Dr.

Charpentier and her collaborators elucidated this mechanism and developed ways to adapt and simplify it for use in gene editing. In 
recognition of this groundbreaking work, Dr. Charpentier was awarded the 2020 Nobel Prize in Chemistry along with her collaborator, 
Dr. Jennifer Doudna of the University of California, Berkeley. The CRISPR/Cas9 technology they described consists of three basic 
components: CRISPR-associated protein 9, or Cas9, CRISPR RNA, or crRNA, and trans-activating CRISPR RNA, or tracrRNA. 
Cas9, in combination with these two RNA molecules, is described as “molecular scissors” that can make specific cuts and edits in
selected double-stranded DNA.

Dr. Charpentier and her collaborators further simplified the system for use in gene editing by combining the crRNA and 
tracrRNA into a single RNA molecule called a guide RNA. The guide RNA binds to Cas9 and can be programmed to direct the Cas9
enzyme to a specific DNA sequence based on Watson-Crick base pairing rules. The CRISPR/Cas9 technology can be used to make
cuts in DNA at specific sites of targeted genes, providing a powerful tool for developing gene editing-based therapeutics. 

Once the DNA is cut, the cell uses naturally occurring DNA repair mechanisms to rejoin the cut ends. If a single cut is made, a 
process called non-homologous end joining can result in the addition or deletion of base pairs, disrupting the original DNA sequence 
and causing gene inactivation. A larger fragment of DNA can also be deleted by using two guide RNAs that target separate sites. After 
cleavage at each site, non-homologous end joining unites the separate ends, deleting the intervening sequence. Alternatively, if a DNA 
template is added alongside the CRISPR/Cas9 machinery, the cell can correct a gene or even insert a new gene through a process
called homology directed repair.

4

CRISPR/Cas9 gene editing

We believe that CRISPR/Cas9 is a versatile technology that can be used to disrupt, delete, correct or insert genes. We intend to

take advantage of the versatility and modularity of the CRISPR/Cas9 system to adapt and rapidly customize individual components for 
specific disease applications. Consequently, we believe that CRISPR/Cas9 may form the basis of a new class of therapeutics with the 
potential to treat both rare and common diseases. Given the advantages of CRISPR/Cas systems, multiple academic groups have 
developed new technologies based on CRISPR/Cas9, such as base editing and prime editing. While still nascent, such new 
CRISPR/Cas-based technologies could have advantages over existing gene-editing technologies, including CRISPR/Cas9 
technologies, in select applications.

5

Our Pipeline

The following table summarizes the status of our product development pipeline: 

Hematopoietic Programs

Background 

We are primarily utilizing ex vivo approaches to treat diseases related to the hematopoietic system, which is the system of 
organs and tissues, such as bone marrow, the spleen and lymph nodes, involved in the production of blood. Today, many of the
hematopoietic system diseases we are targeting are treated with allogeneic hematopoietic stem cell transplants, or allo-HSCT. In
performing allo-HSCT, physicians replace a patient’s blood-forming cells that contain the defective gene with cells obtained from a
different person that contain the normal gene. Unfortunately, not all patients are able to be matched with suitable donors. Patients who
do undergo allo-HSCT face a high risk of complications such as infections related to immunosuppression, transplant rejection and 
graft-versus-host disease, where immune cells in the transplanted tissue (the graft) recognize the recipient (the host) as “foreign” and 
begin to attack the host’s cells.

In contrast to allo-HSCT, our approach is to harvest stem cells directly from the patient, edit the target gene ex vivo, and 
reintroduce those same cells back into the patient. We believe this ex vivo gene-editing approach, which uses the patient’s own cells,
may provide better results than allo-HSCT. 

Our Lead Programs—Hemoglobinopathies

Hemoglobinopathies are a diverse group of inherited blood disorders that result from variations in the synthesis or structure of 

hemoglobin. Our lead program in hemoglobinopathies, for which we have partnered with Vertex, aims to develop a single, potentially 
curative CRISPR/Cas9-based therapy to treat both beta thalassemia and SCD. These diseases are caused by mutations in the gene 
encoding the beta globin protein. Beta globin is an essential component of hemoglobin, a protein in red blood cells that delivers 
oxygen and removes carbon dioxide throughout the body. Several factors make these attractive lead indications, including: (i) high 
unmet medical need, (ii) compelling market potential, (iii) well-understood genetics and (iv) the ability to employ an ex vivo gene 
disruption strategy. 

6

Beta Thalassemia

Overview

Beta thalassemia is a blood disorder that is associated with a reduction in the production of hemoglobin. This disease is caused 

by mutations that give rise to the insufficient expression of the beta globin protein, which can lead to symptoms related not only to the 
lack of hemoglobin, but also to the buildup of unpaired alpha globin proteins in red blood cells. The severity of symptoms associated 
with beta thalassemia varies depending on the levels of functional beta globin present in the blood cells. The unpaired alpha globin
chains are toxic to red blood cells and reduce red blood cell lifespan. In the most severe cases, described as beta thalassemia major, 
functional beta globin is either completely absent or reduced, resulting in severe anemia. In these patients, the bone marrow cannot 
keep pace with the destruction of red blood cells, and thus these patients require regular blood transfusions. While chronic blood 
transfusions can be effective at addressing symptoms, they often lead to iron overload, progressive heart and liver failure, and 
eventually early death. Patients with mild forms of beta thalassemia may experience some mild anemia or even be asymptomatic. The 
total worldwide incidence of beta thalassemia is estimated to be 60,000 births annually, the total prevalence in the United States and 
the EU is estimated to be approximately 16,000 and there are over 200,000 people worldwide who are alive and registered as 
receiving treatment for the disease. 

Limitations of current treatment options

The most common treatment for beta thalassemia is chronic blood transfusions. Transfusion-dependent patients typically receive 

transfusions every two to four weeks and chronic administration of blood often leads to elevated levels of iron in the body, which can
cause organ damage over a relatively short period of time. Patients are often given iron chelators, or medicines to reduce iron levels in 
the blood, which are associated with their own significant toxicities. In developing countries, where chronic transfusions are not 
available, most patients die in early childhood. Also, a disease-modifying therapy for beta thalassemia, Reblozyl (luspatercept-aamt), 
received FDA approval in 2019.

A potentially curative therapy for this disease is allo-HSCT, but few patients elect to have this procedure given its associated 

morbidity and mortality and the lack of matched and willing donors. In addition, the EMA gave a conditional marketing authorization 
to Zynteglo (autologous CD34+ cells encoding βA-T87Q-globin gene), a lentiviral gene therapy developed by bluebird bio, for the 
treatment of certain patients with TDT in 2019, but in 2021 bluebird bio withdrew Zynteglo from the European market. We believe 
that our therapeutic approach could offer a potentially curative therapy for this devastating disease. 

Sickle Cell Disease

Overview

SCD is an inherited disorder of red blood cells resulting from a specific mutation in the beta globin gene that causes abnormal 
red blood cell function. Under conditions of low oxygen concentration, the abnormal hemoglobin proteins aggregate within the red 
blood cells causing them to become sickled in shape and inflexible. These sickled cells obstruct blood vessels, restricting blood flow
to organs, ultimately resulting in severe pain, infections, stroke, overall poor quality of life and early death. Patients also experience 
increased hemolysis, leading to anemia. The worldwide incidence of SCD is estimated to be 300,000 births annually and there are 20-
25 million people worldwide with the disease. In the United States and the European Union, the total prevalence is estimated to be 
150,000 individuals.

Limitations of current treatment options

As with beta thalassemia, in regions where medical infrastructure can support it, standard treatment for patients with SCD who 
have high levels of hemolysis involves chronic blood transfusions, which has the same associated risks of iron overload and toxicities
associated with chelation therapy. The FDA and/or EMA have approved several disease-modifying therapies for SCD as well, 
including hydroxyurea, Adakveo (crizanlizumab-tmca) and Oxbryta (voxelotor). Allo-HSCT is another potential treatment option.
While allo-HSCT provides the only potentially curative therapeutic path for SCD, it is often avoided given the significant risk of 
transplant-related morbidity and mortality in these patients and the lack of matched and willing donors. 

7

Our Gene-Editing Approach

Our therapeutic approach to treating beta thalassemia and SCD employs gene editing to upregulate the expression of the gamma 

globin protein, a hemoglobin subunit that is commonly present only in newborn infants. Hemoglobin that contains gamma globin
instead of beta globin protein is referred to as fetal hemoglobin, or HbF. In most individuals HbF disappears in infancy as gamma
globin is replaced by beta globin through naturally occurring suppression of the gamma globin gene. The symptoms of beta 
thalassemia and SCD typically do not manifest until several months after birth, when the levels of HbF have declined considerably. 
Some patients with beta thalassemia or SCD have elevated levels of HbF that persist into adulthood, a condition known as hereditary 
persistence of fetal hemoglobin, or HPFH. Patients with HPFH are often asymptomatic, or experience much milder forms of disease.
This protective HPFH condition has been shown to result from specific changes to these patients’ genomic DNA, either in the region 
of the globin genes or in certain genetic regulatory elements that control the expression levels of the globin genes. 

Relationship between level of HbF and morbidity in sickle cell disease and beta thalassemia 

An alternative CRISPR/Cas9 approach to treating hemoglobinopathies would be to correct the mutated beta globin gene. We

have chosen the HbF upregulation strategy as our initial approach given the efficiency and consistency of the gene disruption strategy 
involved, the ability of this strategy to counteract a wide variety of different beta globin mutations, including patients with beta
thalassemia, and the natural history data supporting absence of symptoms in patients with HPFH.

Our Lead Hemoglobinopathies Product Candidate—CTX001

Our lead product candidate, CTX001, uses CRISPR/Cas9 to mimic the high levels of HbF that occur naturally in HPFH patients.
To achieve this effect, CTX001 uses CRISPR/Cas9 to disrupt the erythroid specific enhancer of the BCL11A gene. This gene encodes
the BCL11A protein, a critical factor that keeps HbF levels low in most individuals. Disrupting the BCL11A erythroid specific 
enhancer reduces BCL11A expression specifically in erythroid lineage cells, thereby upregulating expression of gamma globin and 
increasing HbF levels.

Our therapeutic approach involves isolating hematopoietic stem cells, or HSCs, which give rise to red blood cells, from a
patient, treating those cells ex vivo with CRISPR/Cas9 to disrupt the BCL11A erythroid specific enhancer and reintroducing the edited 
cells back into the patient. We believe that once reintroduced into the patient, these genetically modified stem cells will produce red 
blood cells that contain high levels of HbF. In beta thalassemia, elevating HbF may reduce the toxicity of unpaired alpha globin 
chains, thereby increasing red blood cell lifespan. Consequently, CTX001 has the potential to reduce or even eliminate the need for 
transfusions in these patients. In SCD, elevated HbF may prevent a cell from sickling, and so achieving sufficiently high HbF in most 
red blood cells could significantly reduce or eliminate the symptoms associated with the disease.

We believe our CRISPR/Cas9 gene-editing strategy may have significant advantages over other gene therapies in development 
for the treatment of hemoglobinopathies. For example, lentivirus-based treatments involve a random integration of one or more copies 
of the globin gene throughout the genome. The expression levels of the newly introduced gene can vary depending on the exact 
location of the DNA in the genome, leading to inconsistent and variable levels of expression. We believe our strategy may lead to 
more uniform globin expression across a high percentage of cells. In addition, with each random lentiviral integration, a mutation may 
be created, which may have an associated safety concern, including the potential to cause cancer. In contrast, CRISPR/Cas9 targets a
specific genomic site for editing, and to date we have detected no off-target activity for our CTX001 guide RNA.

8

Preclinical studies

In preclinical studies using CTX001, our CRISPR/Cas9 gene-editing process demonstrated the ability to edit HSCs with
approximately 80% allelic editing efficiency at clinical scale in a bulk population of cells. We observed this high editing efficiency
across all stem cell subsets, including in long-term repopulating HSCs. After in vitro erythroid differentiation, this editing resulted in 
HbF accounting for greater than 30% of total hemoglobin in edited cells, compared to approximately 10% HbF in the control arm of 
the study. On a per cell basis, more than 90% of cells had modifications at the desired location, with 76% of the cells having edits in
both copies of the target gene and 16% of the cells having edits made on one copy of the target gene. We estimate that after in vitro
erythroid differentiation this editing rate results in HbF expression levels of greater than 35% in cells that have edits on both copies of 
the target gene, and over 20% for cells edited at one gene.

Editing efficiency in human CD34+ cells and resulting HbF ratio after in vitro erythroid differentiation

In preclinical mouse models designed to test the safety of CTX001, gene-edited HSCs maintained the ability to engraft long

term and to differentiate into multiple lineages. Toxicology studies revealed no significant findings and no difference in the 
biodistribution of edited cells compared to controls. Finally, no off-target activity was detectable for the CTX001 guide RNA after 
assessing over 5,000 homology-based sites and over 2,000 homology-independent sites.

CTX001 engraftment in vivo in mice1

9

Clinical Trials

We and Vertex are investigating CTX001 in two Phase 3 open-label clinical trials designed to assess the safety and efficacy of a 
single dose of CTX001 in patients ages 12 to 35 with TDT, CLIMB THAL-111, and severe SCD, CLIMB SCD-121, respectively. The 
first two patients in each clinical trial were treated sequentially and, following data from the initial two patients in each clinical trial
indicating successful engraftment and an acceptable safety profile, that clinical trial opened for concurrent dosing. Both clinical trials
are designed to follow patients for approximately two years after infusion. Each patient will be asked to participate in a long-term,
open-label follow-up trial, CLIMB-131, to evaluate the safety and efficacy of CTX001 in patients who received CTX001 in CLIMB 
THAL-111 or CLIMB SCD-121. CLIMB-131 is designed to follow participants for up to 15 years after CTX001 infusion.

These clinical trials are ongoing. More than 70 patients have been dosed with CTX001 across both studies to date and 

enrollment is complete.

CTX001 has been granted a number of regulatory designations from the FDA, including RMAT, Fast Track, Orphan Drug, and 
Rare Pediatric Disease designations for the treatment of both TDT and SCD. CTX001 has also been granted Orphan Drug Designation 
from the European Commission, as well as PRIME designation from the EMA for the treatment of both TDT and SCD.

Schematic of study procedures for the CLIMB THAL-111 and CLIMB SCD-121 Phase 3 trials

We and Vertex previously published results on the first patient treated in each clinical trial in the New England Journal of 
Medicine. In the second quarter of 2021 at the European Hematology Association Congress, we presented updated clinical data from 
the first 15 patients with TDT treated with CTX001 who had reached at least three months of follow-up after CTX001 dosing (range: 
4 to 26.2 months) as of the March 30, 2021 data cutoff and therefore could be assessed for initial safety and efficacy results. All 15 
patients showed a similar pattern of response, with rapid and sustained increases in total hemoglobin and HbF. These patients all had 
clinically meaningful improvements in total hemoglobin levels, which ranged from 8.9 to 16.9 g/dL at last visit, driven by increased 
HbF levels, which ranged from 67.3% to 99.6% at last visit. The elevation of HbF translated into transfusion independence in all 
patients. All 15 patients ceased receiving packed RBC, or pRBC, transfusions soon after CTX001 infusion, with the last pRBC 
transfusion occurring between 0.7 and 2.0 months after CTX001 infusion. All patients, including six who have the beta zero/beta zero 
or other severe genotypes, were transfusion-free at last follow-up. Across the ten patients with at least six months of follow-up, more 
than 98% of red blood cells, or RBCs, expressed HbF, indicating pancellular distribution of HbF. In addition, the available bone
marrow allelic editing data, encompassing ten patients with at least six months of follow-up, of which five patients had at least 12
months of follow-up and one patient had at least 24 months of follow-up, demonstrated a durable effect. Consistent with this bone
marrow allelic editing data, all five patients with greater than one year of follow-up as of the data cutoff date demonstrate a stable and 
durable response to treatment, including the first patient treated with CTX001, who had a total hemoglobin level of 14.7 g/dL and HbF 
level of 14.1 g/dL at last visit, 24 months after CTX001 dosing. 

10

Clinically Meaningful HbF and Total Hb Were Achieved Early and Maintained in TDT

11

Duration of Transfusion Independence After CTX001 Infusion

The safety data from all fifteen patients were generally consistent with an autologous stem cell transplant and myeloablative 

conditioning. The majority of adverse events, or AEs, occurred within the first 60 days after CTX001 infusion. Three patients 
experienced serious AEs, or SAEs, assessed as related or possibly related to busulfan only: venoocclusive liver disease (two patients),
febrile neutropenia (one patient), colitis (one patient) and pneumonia (one patient); all of these resolved. One patient experienced four 
SAEs assessed by the investigator as related or possibly related to CTX001: headache, haemophagocytic lymphohistiocytosis, or 
HLH, acute respiratory distress syndrome and idiopathic pneumonia syndrome (the latter also related to busulfan). All SAEs occurred 
in the context of HLH and have resolved. No SAEs related to CTX001 were reported in the other patients. The majority of non-serious
adverse events were considered mild to moderate. In addition to the data described above as of the data cutoff, a TDT patient with less
than three months of follow-up, and therefore not included in the data cut, experienced an SAE of cerebellar hemorrhage that was
considered related to busulfan conditioning and has resolved.

CLIMB-121 Trial in Severe SCD

In the second quarter of 2021, at the European Hematology Association Congress, we presented updated clinical data from the 
first seven patients with SCD treated with CTX001 who had reached at least three months of follow-up after CTX001 dosing (range: 
4.9 to 22.4 months) as of the March 30, 2021 data cutoff and therefore could be assessed for initial safety and efficacy results. All 
seven patients showed a similar pattern of response, with rapid and sustained increases in total hemoglobin and HbF, as well as
elimination of vaso-occlusive crises, or VOCs, through last analysis. All seven patients remained VOC-free after CTX001 infusion
and had clinically meaningful improvements in total hemoglobin with normal to near normal total hemoglobin levels at last visit, 
including total hemoglobin levels from 11 to 15.9 g/dL and HbF levels from 39.6% to 49.6% at last visit. Improvements in markers of 
hemolysis, such as serum lactate dehydrogenase and haptoglobin, were observed, and all four patients with haptoglobin data at six 
months had detectable haptoglobin by their six-month visit. In addition, bone marrow allelic editing data collected from four patients
with at least six months of follow-up, of which two had 12 months of follow-up after CTX001 infusion, demonstrated a durable effect.
As of the data cutoff date, two patients with SCD have had follow-up of greater than one year, and both demonstrate a stable and 
durable response to treatment.

12

Clinically Meaningful HbF and Total Hb Were Achieved Early and Maintained in SCD

13

Duration of Freedom from VOCs after CTX001 Infusion

The safety data from seven patients were generally consistent with an autologous stem cell transplant and myeloablative
conditioning. There were no SAEs considered related to CTX001, and the majority of non-serious adverse events were considered 
mild to moderate. The majority of AEs occurred within the first sixty days of CTX001 infusion. After CTX001 infusion, one patient 
experienced an SAE of sepsis related to busulfan, which resolved.  

Immuno-Oncology Programs

Over the past several years, interest in the oncology community has grown rapidly in the field of immuno-oncology, or 
treatments that harness the immune system to attack cancer cells. Engineered immune cell therapy is one such approach, in which 
immune system cells such as T cells are genetically modified to enable them to recognize and attack cancerous cells.

Engineered cell therapy has demonstrated encouraging results leading to three approvals for autologous CD19-targeted CAR-T 

products, and may become an entirely new class of oncology therapeutics; however, realizing this full potential will require 
overcoming some key challenges. Most engineered cell therapies in development require unique products to be created for each 
patient treated, an approach that has in the past proven challenging and cost prohibitive in the field of oncology. This bespoke 
manufacturing process takes time during which a patient’s disease can progress and sometimes fails to produce a viable product at all.
Additionally, these versions of engineered cell therapies appear limited in their ability to treat solid tumors and have demonstrated a 
high rate of toxicities that require complicated management protocols. In contrast, allogeneic engineered T-cell therapies can be 
administered “off-the-shelf” and thus could have immediate availability, improved access, simpler logistics, greater consistency since
each batch yields many doses, and flexible dosing, whether through dose titration or re-dosing.

We expect that the cellular engineering strategies that are ultimately successful in immuno-oncology will involve multiple 
genetic modifications, an application for which we believe CRISPR/Cas9 will play a central role. While other gene-editing platforms
could potentially be used for these purposes, CRISPR/Cas9 is particularly well-suited for multiplexed editing, which is the
modification and/or insertion of multiple genes within a single cell. Current gene-editing techniques that require different protein
enzymes for each genetic modification may be limited in the number of edits they can make concurrently due to efficiency, 
cytotoxicity and/or manufacturing challenges. In contrast, CRISPR/Cas9 has the potential to efficiently make multiple edits using a 
single Cas9 protein and multiple small guide RNA molecules.

14

In our immuno-oncology cell therapies, we are using the multiplexing ability of CRISPR/Cas9 both to enable allogeneic 
administration and to introduce additional genetic edits that aim to improve the efficacy or safety profile of these product candidates.
Furthermore, we are leveraging our CRISPR platform to enable a process of continuous innovation in which we incorporate 
incremental edits into next-generation products to try to increase treatment benefit further. We continue to expand our multiplexing 
capabilities to help us realize the full potential of engineered cell therapy in immuno-oncology across all tumor types, including solid 
tumors. Given the important role we believe CRISPR/Cas9 will play in engineered cell therapy going forward we have thus far elected 
to retain full ownership of our allogeneic CAR-T cell programs.

In addition, multiple groups have begun to demonstrate the utility of other immune cells, such as natural killer, or NK, cells, in 
immuno-oncology therapy. To expand our efforts in gene-edited immune cell therapy beyond T cells, we formed a collaboration with
Nkarta that brings together our gene editing technology and cell therapy expertise with Nkarta’s leading NK cell discovery, 
development and manufacturing capabilities. We and Nkarta are co-developing and co-commercializing two donor-derived, gene-
edited CAR-NK cell product candidates, one of which targets CD70. Additionally, we are co-developing and co-commercializing a 
product candidate combining NK and T cells to harness the unique advantages of both cell types.

Our Lead Immuno-Oncology Product Candidate—CTX110

Our lead immuno-oncology product candidate, CTX110, is a healthy donor-derived gene-edited allogeneic CAR-T 

investigational therapy targeting CD19-positive malignancies, such as certain lymphomas and leukemias. A primary aim of CTX110
is to overcome the inefficiency and cost of creating a unique product for each patient with a given tumor type by treating many 
different patients from a single batch, which we refer to as being an “off-the-shelf” therapy. To generate CTX110, we make three 
modifications to T cells taken from healthy donors using our gene-editing technology: (i) the T-cell receptor, or TCR, is eliminated to
reduce the risk of Graft versus Host Disease, or GvHD, from the product candidate, (ii) a CD19-directed CAR is inserted site-
specifically into the TRAC gene and (iii) the class I major histocompatibility complex, MHC I, is removed from the cell surface in 
order to improve the persistence of the CAR-T cells in an “off-the-shelf” setting. We believe this approach will have advantages over 
other allogeneic CAR-T products in development that semi-randomly insert the CAR using an integrating virus and do not include the 
MHC I knockout to increase persistence.

C

Preclinical studies

As shown in the figure below, we have demonstrated the ability to perform the edits necessary to generate CTX110 at high 
efficiency, and that in preclinical testing CTX110 prolonged the survival of mice with a CD19-positive xenograft tumor model that is
comparable to what is seen with the current generation CAR-T products.

Efficient production of CTX110 via multiplexed editing and prolonged survival of CTX110-treated mice in a disseminated
Nalm6 xenograft tumor model

15

Clinical Trials

We are currently investigating CTX110 in a Phase 1 single-arm, multi-center, open-label clinical trial, CARBON, that is 
designed to assess the safety and efficacy of several dose levels of CTX110 in adult patients with relapsed or refractory B-cell 
malignancies who have received at least two prior lines of therapy. The CARBON clinical trial is ongoing, and we have expanded it 
into a pivotal trial that incorporates consolidation dosing and have begun dosing patients in this pivotal arm. CTX110 has been granted 
RMAT designation by the FDA.

CARBON Trial Design

In October 2021, we shared updated clinical data from our CARBON trial. As of the August 26, 2021 data cutoff, 30 patients 

with large B-cell lymphoma, or LBCL, had been enrolled, of which 26 patients had received CTX110 with at least 28 days of follow-
up and were included in the analysis. All 26 patients had aggressive LBCL, including diffuse large B-cell lymphoma, or DLBCL, not 
otherwise specified (NOS), high grade lymphoma (e.g., triple hit) and transformed follicular lymphoma, or tFL. The majority of 
patients had Stage IV lymphoma and were refractory to their last line of therapy before entering the trial. Approximately 31% of 
patients had progressed through two or more lines of therapy and received CTX110 within nine months of their first lymphoma 
treatment, indicative of rapidly progressive disease. Patients were infused with a single CTX110 infusion following three days of a 
standard lymphodepletion regimen consisting of fludarabine (30 mg/m2/day) and cyclophosphamide (500 mg/m2/day). Dose escalation
began at 30 million CAR-positive T cells (Dose Level 1; DL1) and escalated to the highest dose of 600 million CAR-positive T cells
(Dose Level 4; DL4). Patients could be re-dosed with CTX110 following disease progression.

16

CARBON Patient Flow

17

CARBON Patient Baseline Characteristics

18

Data are shown below for the 26 patients that received CTX110 and had at least 28 days of follow-up. The overall response rate, 

or ORR, and complete response, or CR, rate for patients treated at Dose Level 2, or DL2, and above are shown both on an intent-to-
treat, or ITT, and modified ITT, or mITT, basis. ITT includes all enrolled patients (n=24 at DL2 and above) whereas mITT includes
only those patients who received an infusion of CTX110 (n=23 at DL2 and above). Historically, autologous CAR-T studies have 
reported primary efficacy results using an mITT approach. This methodology excluded up to one-third of enrolled patients in some 
trials—primarily those who experienced rapid disease progression or death during the manufacturing period, or for whom autologous 
CAR-T cell manufacturing was unsuccessful— from the efficacy analysis. In contrast, because CTX110 is “off the shelf” and does not 
require patient-specific manufacturing, nearly all patients enrolled in CARBON could receive CTX110 infusion.

Dose-Dependent Responses Observed with CTX110

19

Durable Responses Observed with CTX110

Dose-dependent responses and durable complete responses were seen with CTX110. A single dose of CTX110 at DL2 and 
above resulted in a 58% ORR and 38% CR rate on an ITT basis. Responses were seen in a variety of patients, including patients who 
had refractory disease, bulky disease, or who had progressed after prior autologous stem cell transplant. Disease assessment was
performed by investigator review according to the 2014 Lugano response criteria. The data also demonstrate the potential for CTX110 
to produce durable remissions, as evidenced by a 21% six-month CR rate (4 of the 9 patients who achieved CR at Day 28, remained in 
CR at 6 months; 5 additional patients had not reached their 6-month evaluation point).

Furthermore, we believe consolidation dosing can improve on an already competitive profile for CTX110, based on the 

pharmacokinetic, or PK, profile and clear dose response observed. The PK profile for CTX110 showed significant and consistent 
expansion, with peak expansion in the blood typically occurring 8 to 10 days following infusion. In most patients, levels of CTX110 in
the blood decreased over the following two to three weeks and approached the limit of detection near Day 28. CTX110 exhibited a 
similar expansion profile when re-administered, with no evidence that anti-HLA or antidrug antibodies accelerated the clearance of 
CAR-T cells. These data indicate that a standard dose of lymphodepleting chemotherapy creates a window for CTX110 activity, and 
support consolidation dosing at one month. In addition, CTX110 had a clear dose response, which we believe is driven by the effector 
to target, or E:T, ratio. As seen in the below plot showing a correlation between clinical response and E:T ratio, an apparent threshold 
existed (shown by the dotted line) that, if exceeded, resulted in 64% (7/11) of patients achieving complete response. Below this
threshold, only 17% (2/12) achieved complete response. The likelihood of complete response rose significantly when CTX110 was 
administered when tumor volume was low. These data support a consolidation dosing strategy, where a second dose of CTX110 is
administered at one month, when tumor volume is lower. We believe this strategy has the potential to lead to a higher rate of durable 
complete responses by eliminating any residual tumor in patients who did not achieve complete elimination from a single dose.

20

CTX110 Showed a Dose Response, with Better Responses Achieved with Higher “Effector:Target” Ratios

21

CTX110 Was Well Tolerated Across All Dose Levels

CTX110 was well tolerated across all dose levels. The adverse events of interest for all evaluable patients are shown in the table
above. There were no cases of Graft versus Host Disease, or GvHD. No infusion reactions to either lymphodepleting chemotherapy or 
CTX110 were observed. All cases of cytokine release syndrome, or CRS, were Grade 1 or 2 per the American Society for 
Transplantation and Cellular Therapy (ASTCT) criteria and either required no specific intervention or resolved following standard 
CRS management. Neither the frequency nor severity of CRS has increased in patients who were re-dosed with CTX110. The only 
case of Grade 3 or higher immune effector cell-associated neurotoxicity syndrome, or ICANS, was in a patient with concurrent HHV-
6 encephalitis. This patient was treated with CTX110 at DL4 and achieved a complete response by PET/CT assessment at Day 25. The
following day, the patient was hospitalized with febrile neutropenia and developed symptoms of short-term memory loss and 
confusion, which eventually progressed to significant obtundation that required intubation. He was initially treated for ICANS with 
steroids, anakinra and intrathecal chemotherapy without improvement. The patient was later found to have reactivation of HHV-6 and 
HHV-6 encephalitis and treated with antiviral therapy. The decision was made to withdraw supportive care and the patient died 52 
days after CTX110 infusion. There have been no cases of ICANS in any other patients treated at Dose Level 3 through DL4. One 
patient (4%) treated at DL2 had Grade 2 ICANS that improved within 24 hours with standard interventions. Only two patients (9%) 
experienced Grade 3 or higher infections: the patient with HHV-6 encephalitis discussed above, and one patient who developed 
pseudomonal sepsis that resolved in four days. Two additional serious adverse events (periorbital cellulitis and febrile neutropenia) 
occurred after CTX110 infusion, both of which resolved and were determined to be unrelated to disease progression or CTX110.

22

CTX120

Our second immuno-oncology candidate, CTX120, is a healthy donor-derived gene-edited allogeneic CAR-T investigational 
therapy targeting BCMA and is in development for the treatment of relapsed or refractory multiple myeloma. BCMA has attractive 
properties for CAR-T cell therapy, namely expression on the surface of B-lineage cells, especially the plasma cells involved in 
multiple myeloma, and absence from other tissues and cell types. As a result, BCMA has become a promising target for autologous 
CAR-T cell therapy. We believe an allogeneic approach may have distinct advantages over autologous CAR-T in multiple myeloma
given the poor health of patient T cells following many lines of prior therapy.

Preclinical Studies

To generate CTX120, we make the same three modifications to healthy-donor T cells as we do for CTX110 but insert a BCMA-

specific CAR. CTX120 leverages many of the capabilities and reagents developed for CTX110, accelerating its path into 
development. As depicted in the figure below, in preclinical studies of CTX120, we observed complete elimination of a xenograft 
multiple myeloma tumor model in all mice treated with CTX120.

Elimination of a subcutaneous RPMI-8226 multiple myeloma model by CTX120

Clinical Trials

We are currently investigating CTX120 in a Phase 1 single-arm, multi-center, open-label clinical trial that is designed to assess

the safety and efficacy of several dose levels of CTX120 for the treatment of relapsed or refractory multiple myeloma. CTX120 for the
treatment of multiple myeloma has received Orphan Drug Designation from the FDA.

23

CTX130

Our third immuno-oncology candidate, CTX130, is a healthy donor-derived gene-edited allogeneic CAR-T investigational 
therapy targeting CD70, an antigen expressed on various solid tumors and hematologic malignancies. CTX130 is in development for 
the treatment of both solid tumors, such as renal cell carcinoma, and T-cell and B-cell hematologic malignancies. Several cancers
express CD70, including non-Hodgkin’s lymphoma, certain T-cell lymphomas, renal cell carcinoma, glioblastoma and pancreatic, 
lung and ovarian cancers, while normal tissues do not express or show extremely limited expression of CD70. This target enables us to 
transition from hematological cancers, such as non-Hodgkin’s lymphoma, to solid tumor cancers, such as renal cell carcinoma.

Preclinical Studies

To generate CTX130, we include the same three modifications used in CTX110 and CTX120, plus knockout of the CD70 gene 

in the T cells to increase CAR-T cell function. As shown in the figure below, in preclinical studies, CTX130 eliminated or severely 
reduced growth of a xenograft model of renal cell carcinoma in all mice treated, both initially and upon re-challenge. In addition, 
CTX130 showed improved function over CAR-T cells where the CD70 gene remains intact.

Additional edit improved the performance of CTX130 against a subcutaneous A498 renal cell carcinoma model

Clinical Trials

We are currently investigating CTX130 in two ongoing independent Phase 1, single-arm, multi-center, open-label clinical trials 

that are designed to assess the safety and efficacy of several dose levels of CTX130 for the treatment of relapsed or refractory renal
cell carcinoma and various types of lymphoma, respectively. CTX130 for the treatment of T-cell lymphoma has received Orphan Drug
Designation from the FDA.

24

Regenerative Medicine Programs

Regenerative medicine, or the use of stem cells to repair or replace tissue or organ function lost due to disease, damage or age,

holds potential to treat both rare and common diseases. The field is approaching the point where clinical proofs of concept have begun 
to emerge. Most of these efforts use unmodified stem cells, and the potential to genetically engineer these cells via gene editing is
large. We are pursuing gene-editing approaches to allow allogeneic use of stem cell-derived therapies by enabling immune evasion, 
improving existing cell function and directing cell fate using CRISPR/Cas9. Our first major effort in this area is in diabetes together 
with our partner, ViaCyte.

ViaCyte Collaboration in Diabetes

Clinical data with islet transplants indicate that beta-cell replacement approaches may offer benefit to patients with insulin-

requiring diabetes. ViaCyte has pioneered the approach of generating pancreatic-lineage cells from stem cells and delivering them 
safely and efficiently to patients. PEC-Direct, ViaCyte’s lead product candidate currently being evaluated in the clinic, uses a non-
immunoprotective delivery device that permits direct vascularization of the cell therapy. This approach has the potential to deliver 
durable benefit; ViaCyte has published promising proof-of-concept data that its stem cell-derived therapy can produce insulin in 
people with T1D. However, because a patient’s immune system will identify these cells as foreign, PEC-Direct will require long-term 
immunosuppression to avoid rejection. As a result, PEC-Direct is being developed as a therapy for the subset of patients with T1D at 
high risk for complications.

Our gene-editing technology offers the potential to protect the transplanted cells from the patient’s immune system by ex vivo

editing of immuno-modulatory genes within the stem cell line used to produce the pancreatic-lineage cells. We believe that the speed,
specificity and multiplexing efficiency of CRISPR/Cas9 make our technology well suited to this task. In addition, our CRISPR 
platform enables a process of continuous innovation, with incremental edits incorporated into next-generation product candidates with
the aim of increasing treatment benefit further.

Together with our partner ViaCyte, we are advancing our first joint program, VCTX210, an investigational, allogeneic, gene-
edited, immune-evasive, stem cell-derived therapy. VCTX210 is the first gene-edited cell replacement therapy for the treatment of 
T1D to enter clinical trials. We believe the combination of our immune-evasive gene-editing capabilities and ViaCyte’s stem cell 
capabilities has the potential to enable a beta-cell replacement product candidate that may deliver durable benefit to patients without 
requiring concurrent immune suppression.

Clinical Trials

We and ViaCyte are currently investigating VCTX210 in an ongoing Phase 1 clinical trial that is designed to assess VCTX210’s

safety, tolerability, and immune evasion in patients with T1D.

25

In Vivo Programs

We believe that in vivo gene editing, or delivery of a CRISPR/Cas9-based therapeutic directly to tissues within the human body,

has reached a threshold for clinical translation, and we are therefore advancing multiple in vivo gene editing investigational therapies
rapidly towards clinical trials. Our initial in vivo applications leverage well-established delivery technologies, such as LNPs and AAV
vectors.

d

Our most advanced in vivo 

programs target the liver because delivery of nucleic acid therapies into the liver has been clinically 
established and validated delivery technologies are now available. We believe this proof of concept reduces the challenges associated 
with delivering CRISPR/Cas9-based therapeutics in vivo to the liver. Within the liver we are pursuing diseases that have well 
understood genetic linkages, such as Glycogen Storage Disease Type Ia, or GSDIa, and Hemophilia A.

Glycogen Storage Disease Ia

GSDIa, also known as Von Gierke disease, is an autosomal recessive inborn error of glucose metabolism caused by a mutation
in the G6PC gene, which encodes the glucose-6-phosphatase protein, or G6Pase. In patients with GSDIa, the lack of G6Pase prevents
the release of glucose from the liver, resulting in accumulation of a large chain form of glucose known as glycogen. The inability of 
patients with GSDIa to regulate glucose levels leads to hypoglycemia, or low blood glucose, and high levels of lactic acid when 
patients are not eating, requiring patients to adhere to burdensome dietary regimes. GSDIa patients also face long-term risks such as
growth delay, neuropathy and kidney stones. Additionally, due to the accumulation of glycogen in the liver, 70% to 80% of patients 
over 25 years of age will develop hepatocellular adenomas, a type of non-cancerous growth in the liver, of which approximately 10%
will progress to hepatocellular carcinoma, a potentially fatal liver cancer. There are approximately 1,000 new cases of GSDIa per year 
worldwide.

There are currently no disease-modifying treatment options for patients with GSDIa. Any disruption in carbohydrate delivery
may lead to low blood sugar levels, which can cause life-threatening consequences including seizure, coma and death. To minimize
the risk of acute complications, patients are required to adhere to highly burdensome, lifelong dietary regimens such as overnight 
administration of uncooked cornstarch or a slow-release carbohydrate product such as Glycosade. These regimens have a high rate of 
non-compliance, leading to increased risk of serious long-term complications.

We are developing a CRISPR/Cas9 product candidate to correct the mutation in GSDIa patients. Animal model experiments 

have demonstrated that the addition of functional copies of the G6PC gene can correct the deficiency of G6Pase protein in GSDIa and 
that as little as 3% of normal levels of G6Pase can restore the equilibrium of glucose and glycogen in the bloodstream and liver. This 
evidence suggests that correction of the mutant gene in only a small percentage of liver cells may have a significant therapeutic effect 
in this disease, which makes a gene correction strategy feasible. Our approach is to correct the G6PC gene directly in its native
location, which we believe will result in appropriate expression of the G6Pase protein. Other methods rely on adding copies of the
gene through viral delivery methods, which we believe may lead to overexpression of the G6Pase protein and ineffective control of 
glucose levels. 

Hemophilia A

Hemophilia A is a rare, typically X-linked, recessive bleeding disorder caused by insufficient or nonfunctioning coagulation 

protein, factor VIII (FVIII). Hemophilia A is the most common type of hemophilia disorder comprising 80-85% of the total 
hemophilia population and accounting for 900,000 people worldwide, including 1 in every 4-10,000 male births. In patients with 
hemophilia A, lack of effective clotting due to deficient functional FVIII activity may present in patients as: easy bruising and 
swelling, prolonged bleeding after injuries, surgeries, or recurrent bleeding prior to wound healing and, in moderate and severe 
hemophilia, spontaneous hemorrhage.

Severity of disease has traditionally been defined based on the residual amount of FVIII in the blood with mild defined as >5-

40%, moderate as 1-5%, and severe as <1%. Normal values for FVIII are between 50-150%. Individuals with severe hemophilia A are 
typically diagnosed within the first two years of life. Without prophylactic treatment, patients suffering severe disease may average up
to two to five spontaneous bleeding episodes per month, including joint bleeding and deep muscle hematomas. Patients with moderate 
disease are usually diagnosed by age five and have spontaneous bleeding at a rate of once a month to once a year and suffer from 
prolonged bleeding after injuries. Individuals with mild disease are diagnosed later in life and do not have spontaneous bleeding but 
exhibit abnormal bleeding after surgeries and other procedures.

26

There are currently no approved curative treatment options for patients with hemophilia A. Current standard of care includes the 

use of plasma-derived or recombinant clotting factor concentrate to prevent uncontrolled bleeding. Several gene therapies are being 
investigated in clinical trials, most of which aim to deliver a functional copy of the FVIII gene into target cells using AAV vectors.
However, because AAV vectors do not integrate into a patient’s genome, transduced cells may lose episomal AAV as they divide,
leading to declining FVIII levels and waning therapeutic benefit. In addition, the immunogenic nature of AAV vectors means that in
most cases patients cannot receive additional infusions of the therapy. In contrast, we are developing a gene-edited product candidate
to treat hemophilia A that uses CRISPR/Cas9 to insert a functional FVIII gene into a specific location in a patient’s genome. This
approach is intended as a one-time curative therapy where direct insertion of the FVIII gene will lead to lifelong production of 
functional FVIII protein.

Additional In Vivo Programs

In addition to our in vivo programs that target the liver, we also are developing in vivo therapies targeted to other organ systems, 
most of which make use of engineered AAV vectors. AAV vectors have become a well-established delivery vehicle, but have certain 
disadvantages for gene-editing applications, including immunogenicity and small packaging size. As a result, we are working with
experts in the AAV field to improve the properties of these vectors through engineering. For instance, in collaboration with Capsida,
we are developing in vivo gene editing therapies delivered with engineered AAV vectors for the treatment of ALS and Friedreich’s
ataxia. Capsida’s high-throughput AAV engineering platform aims to generate capsids optimized to target specific tissue types and 
limits transduction of tissues and cell types that are not relevant to the target disease, potentially improving the activity and tolerability 
of our gene editing investigational therapies. The combination of our technologies could thereby enable best-in-class therapies for 
these devastating neurodegenerative diseases. We lead research and development of the Friedreich’s ataxia program and perform 
gene-editing activities for both programs, while Capsida leads research and development of the ALS program and conducts capsid 
engineering for both programs. We and Capsida each have the option to co-develop and co-commercialize the program that the other 
leads.

Vertex Partnered Programs

We have partnered certain of our programs in other disease areas, such as Duchenne muscular dystrophy, or DMD, myotonic 

dystrophy type 1, or DM1, and cystic fibrosis, or CF. We have entered into collaboration agreements with respect to these three 
programs with Vertex, a global leader in rare diseases with extensive disease area expertise in CF, and we retain the option to co-
develop and co-commercialize products for the treatment of DM1. We believe that our CRISPR/Cas9 gene-editing technology is well 
suited to address DMD, DM1 and CF, all of which have significant patient populations with high unmet medical need.

Duchenne Muscular Dystrophy (DMD)

DMD is an X-linked recessive genetic disease caused by mutations in the dystrophin gene, which results in a lack of the
dystrophin protein. Because dystrophin plays a key structural role in muscle fiber function, the absence of this protein in muscle cells
leads to significant cell damage and ultimately causes muscle cell death and fibrosis. Patients with the disease experience muscle 
degeneration, loss of mobility and premature death. DMD is among the most prevalent severe genetic diseases, occurring in one in 
3,300 male births worldwide. There are currently two approved disease-modifying therapies in the United States for the treatment of 
DMD, one for patients who have confirmed mutations of the dystrophin gene amenable to exon 51 skipping and one for patients who 
have confirmed mutations of the dystrophin gene amenable to exon 53 skipping. These mutations affect about 13% and 8% of the 
DMD population, respectively.

Myotonic dystrophy type 1 (DM1)

DM1 is an autosomal genetic disease caused by the expansion of a CTG trinucleotide repeat in the noncoding region of the
DMPK gene. The disease affects the skeletal and smooth muscle, as well as other organ systems, such as the eye, heart, endocrine
K
system, and central nervous system. The clinical manifestations of DM1 span a continuum from mild to severe. Based on these
phenotypes, DM1 is classified into three somewhat overlapping forms: mild, classic and congenital. Patients with mild DM1 have 
normal lifespans and typically develop cataracts and experience mild sustained muscle contractions, or myotonia. Those with classic 
DM1 tend to have muscle weakness and wasting, myotonia, cataracts and often abnormalities in cardiac conduction, and may become 
physically disabled and have shortened lifespans. Patients with congenital DM1 commonly have intellectual disability and typically
have hypotonia and severe generalized weakness at birth, often with respiratory insufficiency and early death. DM1 affects around 1
in 8,000 people worldwide. No approved therapies exist to treat the underlying disease; instead, most interventions to date aim to
address specific symptoms of the disease.

27

Cystic Fibrosis (CF)

CF is a progressive disease caused by mutations in the cystic fibrosis transmembrane regulator, or CFTR, gene resulting in the

loss or reduced function of the CFTR protein. Patients with CF develop thick mucus in vital organs, particularly in the lungs, pancreas
and gastrointestinal tract. As a result, CF patients experience chronic severe respiratory infections, chronic lung inflammation, poor 
absorption of nutrients, progressive respiratory failure and early mortality. The median age of death from CF in the United States was
31 years in 2017, with most deaths resulting from respiratory failure. CF is an orphan disease that is estimated to effect more than
70,000 patients in the United States and Europe. CF patients require lifelong treatment with multiple daily medications and hours of 
self-care. They often require frequent hospitalizations and sometimes even lung transplantation, which can prolong survival but is not 
curative.

Bayer Partnered Programs

We are also investigating programs for the diagnosis, treatment, or prevention of certain autoimmune disorders and eye 
disorders. From these and the program for hemophilia A disorders described above, Bayer has options to either co-develop and co-
commercialize two products with us or, under certain circumstances, exclusively license such optioned products.

Further Unlocking the Potential of Our CRISPR/Cas9 Platform

We are working to optimize our CRISPR/Cas9 platform. Our key areas of focus are described below. 

Nuclease Engineering

The Cas9 nucleases found in nature are highly efficient and specific. We believe that for many gene-editing applications, the 
naturally occurring Cas9 variants have all the properties required to support an effective therapeutic. However, we also see potential in 
certain disease areas and organ systems where modified versions of Cas9 may be more effective, and we are working internally and 
through our external collaborations to engineer Cas9. 

Our research and development efforts seek to enhance several characteristics of Cas9, including size, specificity, 

immunogenicity and ability to support different types of editing strategies. We believe that the process of optimizing these different 
parameters may yield novel Cas9 versions with different properties, each of which may be best suited to a certain disease area or type 
of genetic editing. 

Guide RNA Optimization

Selecting the sequence for guide RNAs is a critical step in the process of designing our product candidates. Once we have
chosen a gene-editing strategy, we seek to identify guide RNAs that will perform the desired edit with high efficiency and with 
undetectable or extremely low off-target cutting. While computational models can predict efficiency and off-target effects with

28

reasonable accuracy, we believe that a combination of computation and experimental approaches is necessary to reliably select the 
best possible guide RNAs.

Our guide RNA selection process combines bioinformatics and experimental assays to enable the screening of large numbers of 
guide RNAs in each experiment. This process starts with proprietary bioinformatics algorithms that select a large pool of guide RNAs
that are predicted to have desired properties. These guides are then tested for target site cutting efficiency using a high-throughput 
screening platform in a model cell line. The most efficient guides are then put through two screening processes for possible off-target 
effects. First, bioinformatics algorithms are used to identify the 10 to 20 sites in the genome that are most likely to show off-target 
effects, and these sites are examined through high-throughput assays for empirical off-target cutting. Second, homology-independent 
screening is performed to identify any potential off-target cutting, even at unpredicted locations. Finally, a small subset of guides with
the highest efficiency and lowest off-target potential are tested in the cell type of therapeutic interest before choosing a lead guide or 
guides for our program.

Advanced Editing 

While gene correction is achievable today using CRISPR/Cas9, it is more difficult and has lower efficacy than the more 
straightforward gene disruption strategy. Our initial gene correction programs target diseases in which therapeutic efficacy can be 
achieved through correction of only a small percentage of cells, while other potential indications may require correction of a
significantly higher percentage of cells. We are working to increase the efficiency of gene correction to facilitate the potential
treatment of these additional indications. 

A central focus of our development efforts is to optimize the correction rates in cell types where rates of correction are typically 

low. Some of this optimization is being done internally, to test the influence of different parameters of the CRISPR/Cas9 system on 
correction efficiency. We are also collaborating more broadly with leaders in the DNA repair field, to explore other approaches to
optimize correction rates.

We are also focused on expanding our ability to perform multiple edits simultaneously. In contrast to other gene-editing 
technologies, which require extensive protein engineering and an additional construct for each new genetic target, CRISPR/Cas9 only
requires a new guide RNA using simple Watson-Crick base pairing to target a new genetic locus. As a result, one can easily perform 
many edits at once using CRISPR/Cas9, a process known as multiplexing. We believe multiplexing holds promise in cell therapies, 
where making several modifications may lead to a safer and more efficacious therapy. Our research efforts in this area emphasize 
developing strategies to keep editing rates high while multiplexing without increasing the risk of off-target activity.

Synthetic Biology

The application of engineering principles to biological systems, broadly known as synthetic biology, could facilitate the

development of improved cellular therapeutics. Novel strategies and tools in this area, such genetic circuits to regulate gene expression
based on Boolean logic, may allow us to control specific cellular activity, such as the secretion of a protein, in response to a selected 
input, such as an administered small molecule or a marker sensed on a cell surface. We believe synthetic biology holds promise when 
combined with CRISPR/Cas9 gene editing because CRISPR/Cas9 enables the precise engineering of such circuits into the genomes of 
cell therapies in order to improve their therapeutic properties. Given this potential, we have active efforts to develop and test such
synthetic biology tools for incorporation into future immuno-oncology and regenerative medicine cell therapies.

Strategic Partnerships and Collaborations 

We intend to develop CRISPR/Cas9-based therapeutics both independently and in collaboration with current and potential
future corporate partners. We view strategic partnerships as a core component of our strategy, allowing us to access capabilities and 
resources in support of our therapeutic programs. We have established three broad strategic partnerships to develop gene editing-based 
therapeutics in specific disease areas.

Vertex

We have entered into a series of agreements with Vertex that contemplate certain research, development, manufacturing and 
commercialization activities involving various targets. Since October 2015, we have entered into a Strategic Collaboration, Option and 
License Agreement, as amended in 2017 and 2019, or the 2015 Collaboration Agreement; a Joint Development and 
Commercialization Agreement, or the Vertex JDA, which was amended and restated in April 2021, or the A&R Vertex JDCA; and a 
Strategic Collaboration and License Agreement, as amended in 2021, or the 2019 Collaboration Agreement.

29

2015 Collaboration Agreement

Pursuant to the 2015 Collaboration Agreement, we agreed to provide technology and options to obtain licenses relating to our 

CRISPR/Cas technology to Vertex in exchange for a $75.0 million upfront payment. In 2015, in connection with the initial entry into 
the 2015 Collaboration Agreement, Vertex also made a $30.0 million equity investment in us.

The initial focus of the 2015 Vertex collaboration was to use CRISPR/Cas9 technology to discover and develop gene-based 

treatments for hemoglobinopathies and cystic fibrosis. In 2017, Vertex exercised its option to co-develop and co-commercialize the 
hemoglobinopathies program. Matters relating to hemoglobinopathies targets are governed by the A&R Vertex JDCA, as summarized 
below. Further discovery efforts focused on a specified number of other genetic targets. Under the 2015 Collaboration Agreement, 
Vertex had the option to exclusively license treatments for a specified number of collaboration targets that emerged from the four-year 
research collaboration under certain of our platform and background intellectual property to develop, manufacture, commercialize, sell
and use therapeutics directed to each such collaboration target. We were responsible for discovery activities, and the related expenses
were fully funded by Vertex.

In October 2019, Vertex exercised the remaining options granted to it under the 2015 Collaboration Agreement to exclusively 

in-license three additional targets for the development of gene-based treatments using CRISPR-based gene editing. The targets include 
the cystic fibrosis transmembrane conductance regulator gene and two undisclosed targets. Under the terms of the 2015 Collaboration 
Agreement, we received an upfront payment of $30.0 million in connection with the option exercise and have the potential to receive 
up to $410.0 million in development, regulatory and commercial milestones, as well as royalty payments in the single digits to low
teens on net product sales for each of the three targets. The milestone and royalty payments are each subject to reduction under certain 
specified conditions set forth in the 2015 Collaboration Agreement. For these targets, Vertex is solely responsible for all research, 
development, manufacturing and global commercialization activities and Vertex received exclusive rights to develop and 
commercialize products related to these targets globally. The research term of the 2015 Collaboration Agreement has expired, and 
Vertex no longer holds rights to in-license additional targets under the 2015 Collaboration Agreement. 

Either party can terminate the 2015 Collaboration Agreement upon the other party’s material breach, subject to specified notice 

and cure provisions. Vertex also has the right to terminate the 2015 Collaboration Agreement for convenience at any time upon 90
days’ written notice prior to any product receiving marketing approval and upon 270 days’ notice after a product has received 
marketing approval. We may also terminate the 2015 Collaboration Agreement in the event Vertex challenges any of our patent rights.

Absent early termination, the 2015 Collaboration Agreement will continue until the expiration of the Vertex’s payment 

obligations under the 2015 Collaboration Agreement. 

Joint Development Agreement

In December 2017, we entered into the Vertex JDA with Vertex pursuant to which the parties agreed to, among other things, co-

develop and co-commercialize CTX001 and other product candidates specified in the Vertex JDA. In April 2021, we and Vertex 
agreed to amend and restate the Vertex JDA and entered into the A&R Vertex JDCA, pursuant to which the parties agreed to, among 
other things, (a) adjust the governance structure for the collaboration and adjust the responsibilities of each party thereunder; (b) adjust 
the allocation of net profits and net losses between the parties with respect to CTX001 only; and (c) exclusively license (subject to our 
reserved rights to conduct certain activities) certain intellectual property rights to Vertex relating to the specified product candidates
and products (including CTX001) that may be researched, developed, manufactured and commercialized under such agreement.

The A&R Vertex JDCA includes, among other things, provisions relating to the following:

Governance; Activities. We and Vertex disbanded the previously established collaboration strategy team and all working groups
established by such team and established the following committees: (i) a joint oversight committee to provide high-level oversight and 
(ii) a transition committee to provide for forum planning, discussing and sharing information regarding certain transition activities
until completion of such activities. Each of the new committees contain an equal number of representatives from each of CRISPR and 
Vertex. The A&R Vertex JDCA provides that, subject to the terms and conditions of such agreement, Vertex has the right to conduct 
all research, development, manufacturing and commercialization activities relating to the specified product candidates and products
(including CTX001) throughout the world subject to our reserved right to conduct certain activities. We will continue to participate in
certain aspects of such activities in an observer capacity unless and to the extent otherwise agreed to by the parties.

Financial Terms. In the second quarter of 2021, in connection with the closing of the transaction contemplated by the A&R 
Vertex JDCA, we received a $900 million up-front payment from Vertex. Additionally, we are eligible to receive a one-time $200
million milestone payment upon receipt by Vertex of the first marketing approval of the initial product candidate from the FDA or the
European Commission. The net profits and net losses, as applicable, incurred under the A&R Vertex JDCA with respect to all product 

30

candidates and products specified in the A&R Vertex JDCA other than CTX001 shall be shared equally between us and Vertex. With
respect to CTX001 only, the net profits and net losses, as applicable, incurred under the A&R Vertex JDCA through July 1, 2021 in
connection with the initial shared product (i.e., CTX001) were shared equally between us and Vertex, and beginning July 1, 2021, the 
net profits and net losses, as applicable, incurred under the A&R Vertex JDCA are allocated 40% to CRISPR and 60% to Vertex. 

Termination. Either party can terminate the A&R Vertex JDCA upon the other party’s material breach, subject to specified 
notice and cure provisions, or, in the case of Vertex, in the event that we become subject to specified bankruptcy, winding up or 
similar circumstances. Either party may terminate the A&R Vertex JDCA in the event the other party commences or participates in 
any action or proceeding challenging the validity or enforceability of any patent that is licensed to such challenging party pursuant to
the A&R Vertex JDCA. Vertex also has the right to terminate the A&R Vertex JDCA for convenience at any time after giving prior 
written notice.

If circumstances arise pursuant to which a party would have the right to terminate the A&R Vertex JDCA on account of an 
uncured material breach, such party may elect to keep the A&R Vertex JDCA in effect and cause such breaching party to be treated as 
if it had exercised its opt-out rights with respect to the products associated with such uncured material breach (described below) and 
the royalties payable to the breaching party would be reduced by a specified percentage.

Opt-Out Rights. Either party may opt out of the development of a product candidate under the A&R Vertex JDCA after 
predetermined points in the development of the product candidate, on a candidate-by-candidate basis. In the event of such opt-out, the 
party opting-out will no longer share in the net profits and net losses associated with such product candidate and, instead, the opting-
out party will be entitled to high single to mid-teen percentage royalties on the net sales of such product, if commercialized.

2019 Collaboration Agreement 

In June 2019, we and Vertex entered the 2019 Collaboration Agreement, pursuant to which we and Vertex agreed to collaborate 

to develop and commercialize products for the treatment of DMD and DM1. We and Vertex amended the 2019 Collaboration 
Agreement in April 2021.

The 2019 Collaboration Agreement includes, among other things, provisions relating to the following:

Governance. We and Vertex will form a joint advisory committee to provide high-level oversight and coordination of the 

activities covered by the 2019 Collaboration Agreement.

Development and Commercialization. The 2019 Collaboration Agreement provides that Vertex will be responsible for 

development and commercialization activities, subject to our option, exercisable during a specified exercise period, to co-develop and 
co-commercialize products for the treatment of DM1.

Financial Terms. In connection with entering into the 2019 Collaboration Agreement, we received a $175.0 million up-front 

payment from Vertex. We are eligible to receive milestone payments from Vertex of up to $775.0 million in the aggregate, depending
on the numbers and types of products that achieve pre-determined development and commercial milestones. We are also eligible to 
receive royalties on the sales of products ranging from the low single digits to the low double digits.  

Co-Development and Co-Commercialization Option. If we elect to co-develop and co-commercialize products for the treatment 

of DM1, we would reimburse Vertex for fifty percent (50%) of the DM1 research and development costs incurred by Vertex and 
would be responsible for fifty percent (50%) of such costs going forward. We would receive, in lieu of further milestone or royalty
payments associated with DM1 development and commercialization activities, fifty percent (50%) of all profits from sales of such
products and would be responsible for fifty percent (50%) of all losses.

Termination. Either party may terminate the 2019 Collaboration Agreement upon the other party’s material breach, subject to
specified notice and cure provisions. We may also terminate the 2019 Collaboration Agreement in the event Vertex commences or 
participates in any action or proceeding challenging the validity or enforceability of any patent that is licensed to Vertex pursuant to
the 2019 Collaboration Agreement. Vertex may also terminate the 2019 Collaboration Agreement upon our bankruptcy or insolvency, 
or for convenience at any time, after giving written notice.

If circumstances arise pursuant to which Vertex would have the right to terminate the 2019 Collaboration Agreement on account 

of an uncured material breach, Vertex may elect to keep the 2019 Collaboration Agreement in effect and reduce by a specified 
percentage the applicable royalties payable in respect of the product(s) that are the subject of the breach.

31

Bayer

In December 2015, we and Bayer entered into a joint venture agreement, or the Joint Venture Agreement, pursuant to which we

and Bayer established Casebia to discover, develop and commercialize CRISPR/Cas9 gene-editing therapeutics to treat the genetic 
causes of bleeding disorders, autoimmune disease, blindness, hearing loss and heart disease. Under the Joint Venture Agreement, 
Bayer made available its protein engineering expertise and relevant disease know-how and we made available our proprietary 
CRISPR/Cas9 gene-editing technology and intellectual property. We and Bayer each held a 50% partnership interest in Casebia.

In December 2019, we, Bayer, certain subsidiaries and affiliates of us and Bayer, and Casebia entered into a series of 
transactions by which, among other things, Casebia became a wholly-owned subsidiary of ours; we and Bayer terminated the joint 
venture; and we and Bayer entered into a new option agreement, or the 2019 Option Agreement.

Retirement Agreement

On December 13, 2019, we, Bayer and Casebia entered into an agreement, or the Retirement Agreement, pursuant to which 
Casebia retired Bayer’s outstanding partnership interests in exchange for up to $22.0 million returned from Casebia operating cash
less certain estimated interim operating expenses, subject to potential post-closing adjustments, or the Retirement.

In connection with the Retirement, our wholly-owned subsidiary simultaneously acquired a 1% partnership interest in Casebia 

in exchange for a capital contribution in an amount equal to 1% of the fair market value of Casebia. Accordingly, after effecting the
Retirement, we and our wholly-owned subsidiary own 100% of the partnership interests in Casebia. The completion of the Retirement 
occurred simultaneously with the signing of the Retirement Agreement.  

The Retirement Agreement contains customary representations and warranties and other customary terms for a transaction of 

this type. 

In connection with the Retirement, the parties also entered into certain other ancillary agreements, including a joint venture 

termination agreement and option agreement, each summarized below.

Joint Venture Termination Agreement

In connection with entering into the Retirement Agreement, we, Bayer, certain subsidiaries and affiliates of us and Bayer, and 

Casebia entered into an agreement, or the Joint Venture Termination Agreement, pursuant to which we and Bayer agreed to terminate 
the Joint Venture Agreement consistent with the terms of such agreement.

Under the Joint Venture Termination Agreement, Casebia-owned patents, know-how and technology are now co-owned by us 
and Bayer, subject to certain exclusive licenses granted therein. In addition, the parties modified their rights and obligations under an
amended and restated intellectual property management agreement and terminated other agreements between the parties related to the 
joint venture, including the CRISPR IP Contribution Agreement with Casebia, dated as of March 16, 2016, pursuant to which we and 
certain of our affiliated entities granted Casebia an exclusive, worldwide, fully paid-up, royalty-free license, including the right to 
sublicense, to the use of our CRISPR/Cas technology to research, develop, produce, commercialize and sell products in certain fields
and the existing Option Agreement, dated as of March 16, 2016, by and between us, Bayer and Casebia.

2019 Option Agreement

In connection with entering into the Retirement Agreement and the Joint Venture Termination Agreement, we and Bayer also 
entered into the 2019 Option Agreement pursuant to which Bayer obtained an option (exercisable during a specified exercise period 
defined by future events, but in no event longer than five years after the effective date of the 2019 Option Agreement) to co-develop 
and co-commercialize two products for the diagnosis, treatment, or prevention of certain autoimmune disorders, eye disorders, or 
hemophilia A disorders. In the event Bayer elects to co-develop and co-commercialize a product, the parties will negotiate and enter 
into a co-development and co-commercialization agreement, or a Co-Commercialization Agreement, for such product, and Bayer 
would be responsible for 50% of the research and development costs incurred by us for such product going forward. Bayer would 
receive 50% of all profits from sales of such product and would be responsible for 50% of all losses.

If Bayer elects to exercise its option to co-develop and co-commercialize a product, Bayer will make a one-time $20.0 million 
payment, or the Option Payment, to us that will become non-refundable once the parties execute a Co-Commercialization Agreement 
with respect to such optioned product. The Option Payment is payable only once with respect to the first time Bayer exercises an
option under the 2019 Option Agreement.

32

In addition, following Bayer’s exercise of its option and/or the execution of a Co-Commercialization Agreement for an optioned 

product, for a period beginning on the effective date of such Co-Commercialization Agreement and ending on the earlier of the three-
month anniversary of such effective date or during the 90-day negotiation process of such Co-Commercialization Agreement, Bayer 
has a right to negotiate an exclusive license to develop and commercialize such optioned product. If Bayer exercises such right, the
parties will enter into an exclusive license agreement for such optioned product on terms mutually agreeable to the parties. Further, the 
Option Payment paid for such optioned product would become credited against payments due under such exclusive license or any
other exclusive license entered into in connection with the 2019 Option Agreement.

Either party may terminate the 2019 Option Agreement upon the other party’s material breach, subject to specified notice and 
cure provisions. We may also terminate the 2019 Option Agreement in the event Bayer commences or participates in any action or 
proceeding challenging the validity or enforceability of any CRISPR patent necessary or useful for the research, development, 
manufacture or commercialization of a product that is the subject of the 2019 Option Agreement. Bayer may also terminate the 2019 
Option Agreement upon our bankruptcy or insolvency, or for convenience at any time, after giving written notice.

Intellectual Property

We strive to protect and enhance the proprietary technology, inventions, know-how and improvements that we believe are 
commercially important to our business by seeking, maintaining, and defending patent rights, whether developed internally or licensed 
from third parties, that cover our gene-editing technology, and existing and planned therapeutic programs. We also rely on trade secret 
protection and confidentiality agreements to protect our proprietary technologies and know-how to protect aspects of our business that 
are not amenable to, or that we do not consider appropriate for, patent protection, as well as continuing technological innovation and 
seeking in-licensing opportunities to develop, strengthen and maintain our proprietary position in the field of gene editing. We 
additionally rely on trademark protection, copyright protection and regulatory protection available via orphan drug designations, data
exclusivity, market exclusivity, and patent term extensions. Our success will depend significantly on our ability to obtain and maintain 
patent and other proprietary protection for our technology, our ability to defend and enforce our intellectual property rights and our 
ability to operate without infringing any valid and enforceable patents and proprietary rights of third parties. We also protect the 
integrity and confidentiality of our data, know-how and trade secrets by maintaining physical security of our premises and physical 
and electronic security of our information systems.

In-Licensed Intellectual Property from Dr. Charpentier

In April 2014, pursuant to an exclusive license with Dr. Charpentier, we licensed certain rights to a worldwide patent portfolio 

which covers various aspects of our genome editing platform technology including, for example, compositions of matter, including 
additional CRISPR/TRACR/Cas9 complexes, and methods of use, including their use in targeting or cutting DNA. We refer to this
worldwide patent portfolio as the “Patent Portfolio”. This Patent Portfolio to-date includes, for example, more than eighty-five (85) 
granted or allowed patents in the United States, United Kingdom, Germany, Europe, Japan, China, Ukraine, New Zealand, Singapore, 
Australia, Mexico, Tunisia, Hong Kong, Israel, Peru, the Philippines, and South Africa and pending patent applications in the United 
States, Europe, Canada, Mexico, Australia and other selected countries in Central America, South America, Asia and Africa. This 
license is limited to therapeutic products such as pharmaceuticals and biologics and any associated companion diagnostics, for the
treatment or prevention of human diseases, disorders, or conditions. For further information about this license, please see “Business – 
CRISPR License with Dr. Charpentier.”

In addition to Dr. Charpentier, the Patent Portfolio has named inventors who assigned their rights either to the Regents of the 
University of California, or California, or the University of Vienna, or Vienna. California’s rights are subject to certain overriding 
obligations to the sponsors of its research, including the Howard Hughes Medical Institute and the U.S. Government. Caribou
Biosciences, or Caribou, had reported that it had an exclusive license to patent rights from California and Vienna, subject to a retained 
right to allow non-profit entities to use the inventions for research and educational purposes. Intellia Therapeutics, Inc., or Intellia 
Therapeutics, had reported that it had an exclusive license to such rights from Caribou in certain fields. We refer collectively to Dr.
Charpentier, California, and Vienna as the “CVC Group”. We are subject to quasi-litigation, inter partes administrative proceedings in
the U.S. Patent and Trademark Office, or USPTO, and the European Patent Office involving the Patent Portfolio. For further 
information regarding risks regarding these proceedings, please see “Risk Factors—Risks Related to Intellectual Property.”

On December 15, 2016, we entered into a Consent to Assignments, Licensing and Common Ownership and Invention

Management Agreement, or the IMA, with California, Vienna, Dr. Charpentier, Intellia Therapeutics, Caribou, ERS Genomics Ltd., or 
ERS, and our wholly-owned subsidiary TRACR Hematology Ltd., or TRACR. Under the IMA, California and Vienna retroactively 
consent to Dr. Charpentier’s licensing of her rights to the CRISPR/Cas9 intellectual property, pursuant to our license with Dr. 
Charpentier, to us, TRACR, and ERS, in the United States and globally. The IMA also provides retroactive consent of co-owners to 
sublicenses granted by us, TRACR and other licensees, prospective consent to sublicenses they may grant in future, retroactive

33

approval of prior assignments by certain parties, and provides for, among other things, (i) good faith cooperation among the parties 
regarding patent maintenance, defense and prosecution, (ii) cost-sharing arrangements, and (iii) notice of and coordination in the event 
of third-party infringement of the subject patents and with respect to certain adverse claimants of the CRISPR/Cas9 intellectual 
property. Unless earlier terminated by the parties, the IMA will continue in effect until the later of the last expiration date of the 
patents underlying the gene-editing technology, or the date on which the last underlying patent application is abandoned. For further 
information regarding the effects of joint ownership in the United States and in other jurisdictions worldwide, please see “Risk Factor 
– The Intellectual Property That Protects Our Core Gene-Editing Technology Is Jointly Owned, And Our License Is From Only One
Of The Joint Owners, Materially Limiting Our Rights In The United States And In Other Jurisdictions.”  

CRISPR-Owned Intellectual Property

In addition to the Patent Portfolio, we have a broad intellectual property estate that includes numerous patent families covering 
key aspects of our CRISPR/Cas9 technologies and development programs which is intended to provide multiple layers of protection.  
These patent families encompass filings covering our development programs (such as composition of matter, method of use, 
manufacturing processes, dosing and formulations), the use and improvement modifications of CRISPR/Cas9 systems for gene editing
(such as improvements to component systems including nucleases and single or modified guide RNAs), technologies for delivering
protein/nucleic acid complexes and RNA into cells (such as improved viral vector systems and self-inactivating systems), and 
technology relevant to stem cell-based therapies.

Overall, our intellectual property estate includes over ninety (90) active patent families and over forty (40) granted or allowed 

patents in the United States, China, Europe, and South Africa, and pending patent applications in the United States, Europe, Australia, 
Canada, China, Japan, Mexico and other selected countries in Central America, South America, the Middle East, Asia and Africa. The 
granted patents and any other patents that may ultimately issue from these patent families are expected to expire starting in 2033, not 
including any applicable patent term extensions.

Our U.S. trademark estate consists of ten (10) pending applications, including for CTX001, CTX110, CTX120, CTX130, 

CRISPR TX, and CRISPR THERAPEUTICS, as well as five U.S. registrations, including for CRISPR THERAPEUTICS and the 
CRISPR THERAPEUTICS logo. Our international trademark estate consists of multiple pending applications and registrations, 
including two pending applications for CRISPR THERAPEUTICS in Germany and Italy and three registrations in UK, Spain and 
Benelux, and thirteen (13) registrations for CRISPR THERAPEUTICS & DESIGN in Brazil, Benelux and Hong Kong, Italy, South 
Africa and Spain. We also have five International Registrations, including for CTX001 designating the EU, Switzerland, and UK, and 
CRISPR THERAPEUTICS logo designating Australia, Canada, Switzerland, Japan, Korea, Mexico, Russia, Singapore, Vietnam and 
UK.

Patent Assignment Agreement 

In November 2014, we entered into a patent assignment agreement with Dr. Charpentier, Dr. Ines Fonfara and Vienna, or the

Patent Assignment Agreement. Under the Patent Assignment Agreement, Dr. Charpentier, Dr. Fonfara and Vienna assigned to us all 
rights to a family of patent applications relating to certain compositions of matter, including additional CRISPR/TRACR/Cas9
complexes, and methods of use, including their use in targeting or cutting DNA. 

As consideration for the patent rights assigned to us, we agreed to pay an upfront payment, milestone payments beginning with
the filing of a U.S. Investigational New Drug application or its equivalent in another country, a minimum annual royalty, a low single-
digit royalty on net sales of products whose manufacture, use, sale, or importation is covered by the assigned patent rights, and a low
single-digit percentage of licensing revenues. 

We are obligated to use commercially reasonable efforts to obtain regulatory approval to market a product whose manufacture,

use, sale, or importation is covered by the assigned patent rights, including but not limited to an obligation to use commercially 
reasonable efforts to file a U.S. Investigational New Drug application (or its equivalent in a major market country) by November 
2021. 

34

License Agreements

CRISPR License With Dr. Charpentier 

In April 2014, we entered into a license agreement, or the Charpentier License Agreement, with Dr. Charpentier, one of our co-
founders, pursuant to which we received an exclusive license under Dr. Charpentier’s joint ownership interest in the Patent Portfolio,
to research, develop and commercialize therapeutic products such as pharmaceuticals or biological preparations, and any associated 
companion diagnostics, for the treatment or prevention of human diseases, disorders, or conditions, other than hemoglobinopathies,
which we refer to as the CRISPR Field. The license is exclusive, even as to Dr. Charpentier, except that she retains a non-transferable 
right to use the technology for her own research purposes and in research collaborations with academic and non-profit partners. The 
exclusive license is granted only under Dr. Charpentier’s interest in the patent applications and the exclusivity is not granted under any 
other joint owner’s interest. Additionally, the Charpentier License Agreement granted us an exclusive, worldwide, royalty-free 
sublicense, including the right to sublicense, to research, develop, produce, commercialize and sell therapeutic products relating to the 
CRISPR Field which incorporate any intellectual property that TRACR develops under its license with Dr. Charpentier. In turn, we 
granted to Dr. Charpentier an exclusive license with the obligation to sublicense to TRACR any intellectual property we develop 
under the license with Dr. Charpentier for treatment and prevention of hemoglobinopathies in humans, including, without limitation, 
sickle cell disease and thalassemia.

Under the terms of the Charpentier License Agreement, as consideration for the license, Dr. Charpentier received a technology 

transfer fee, an immaterial annual maintenance fee, immaterial milestone payments that will be due after the initiation of clinical trials,
a low single digit percentage royalty on net sales of licensed products, and a low single digit percentage royalties of sublicensing
revenue. We are obligated to use commercially reasonable efforts to obtain regulatory approval to market a licensed therapeutic
product. We must use commercially reasonable efforts to file a U.S. Investigational New Drug application (or its equivalent in a major 
market country for a therapeutic product in the CRISPR field) by April 2021. In addition, we must use commercially reasonable
efforts to file a U.S. Investigational New Drug application (or its equivalent in a major market country) for a therapeutic product in the
CRISPR field by April 2024.

Unless terminated earlier, the term of the Charpentier License Agreement will expire on a country-by-country basis, upon the

expiration of the last to expire valid claim of the Patent Portfolio in such country. We have the right to terminate the agreement at will 
upon 60 days’ written notice to Dr. Charpentier. We and Dr. Charpentier may terminate the agreement upon 90 days’ notice in the 
event of a material breach by the other party, which is not cured during the 90-day notice period. Dr. Charpentier may terminate the 
license agreement immediately if we challenge the enforceability, validity, or scope of any Patent Portfolio. 

TRACR License With Dr. Charpentier 

In April 2014, concurrently with our license agreement with Dr. Charpentier, TRACR entered into a license agreement, or the

TRACR License Agreement, with Dr. Charpentier, a minority shareholder of TRACR, under the Patent Portfolio. Pursuant to the 
TRACR License Agreement, TRACR was granted an exclusive, worldwide, royalty-bearing license, including the right to sublicense, 
to research, develop, produce, commercialize and sell therapeutic and diagnostic products for the treatment and prevention of 
hemoglobinopathies in humans, including sickle cell disease and thalassemia, or the TRACR Field. TRACR also received a non-
exclusive, worldwide, royalty-free license, including the right to sublicense, to carry out internal pharmaceutical research for 
therapeutic products outside of the TRACR Field and an exclusive, worldwide, royalty-free sublicense, including the right to 
sublicense, to research, develop, produce, commercialize and sell therapeutic products relating to the TRACR Field which incorporate 
any intellectual property that CRISPR develops under its license with Dr. Charpentier. In turn, TRACR granted to Dr. Charpentier an
exclusive license to sublicense to CRISPR any intellectual property that TRACR develops under the license with Dr. Charpentier for 
use in the CRISPR Field.

TRACR is obligated to use commercially reasonable efforts to research, develop, and commercialize at least one therapeutic 
product for the prevention or treatment of human disease under the license agreement. TRACR must use commercially reasonable 
efforts to file a U.S. Investigational New Drug application (or its equivalent in a major market country) for a therapeutic product in the
TRACR field by April 2021. In addition, TRACR must use commercially reasonable efforts to file a U.S. Investigational New Drug 
application (or its equivalent in a major market country) for a therapeutic product in the TRACR field by April 2024. TRACR is solely
responsible for all clinical, regulatory and development costs. 

Under the TRACR License Agreement, Dr. Charpentier is entitled to receive immaterial clinical and regulatory milestone 
payments per product that TRACR commercializes. TRACR is also required to pay Dr. Charpentier low single digit percentage
royalties on the net sales of any approved therapeutic or diagnostic products, made by it, its affiliates, or its sublicensees and low 
single-digit percentage royalties on sublicensing revenue. 

35

Unless terminated earlier, the term of the license agreement will expire on a country-by-country basis, upon the expiration of the 

last to expire valid claim of the Patent Portfolio in such country. TRACR has the right to terminate the agreement at will upon 60
days’ written notice to Dr. Charpentier. TRACR and Dr. Charpentier may terminate the agreement upon 90 days’ notice in the event 
of a material breach by the other party, which is not cured during the 90-day notice period. Dr. Charpentier may terminate the license
agreement immediately if TRACR challenges the enforceability, validity, or scope of any Patent Right. 

Enabling Technologies

We have entered into a number of additional collaborations and license agreements in support of our ex vivo and in vivo
programs, including agreements related to: technologies to deliver CRISPR/Cas9 ex vivo and in vivo; additions to our hematopoietic
stem cell and in vivo programs, including a grant to advance gene-editing therapies for HIV; and enhancements to our immuno-
oncology and regenerative medicine cell therapy programs and platform. For example, we have entered into agreements, including
with MaxCyte Incorporated on ex vivo delivery for our hemoglobinopathy and immuno-oncology programs, CureVac AG on
optimized mRNA constructs and manufacturing for certain in vivo programs, ProBioGen AG on the development of novel in vivo
delivery modalities, KSQ Therapeutics Incorporated on intellectual property for our allogeneic immuno-oncology programs and 
University Health Network on regenerative medicine cell therapies for a number of different diseases.

Manufacturing

The manufacturing processes for cell and genetic therapies are complex and require customized systems, equipment, facilities 

and expertise for each program and therapy. In the second quarter of 2020, we announced an investment to construct our own cell 
therapy manufacturing facility for clinical and commercial production of our cell therapy product candidates in Framingham,
Massachusetts. In the fourth quarter of 2021, we began the regulatory validation activities, including compliance with current Good 
Manufacturing Practice, or cGMP, for this facility to enable us to produce clinical cell therapy product supply in the future. The
facility comprises approximately 50,249 square feet.

We will continue to rely on external manufacturing capabilities realized via contract manufacturing organization relationships in

the United States and abroad. We have entered into certain manufacturing and supply arrangements with third-party suppliers to 
support production of our product candidates and their components. We plan to continue to rely on qualified third-party organizations
to produce or process bulk compounds, formulated compounds, viral vectors or engineered cells for IND-supporting activities and 
early stage clinical trials. We expect that commercial quantities of any compound, vector, or engineered cells that we may seek to
develop will be manufactured in facilities and by processes that comply with FDA and other regulations. At the appropriate time in the 
product development process, we will determine whether to utilize our own manufacturing facility or continue to rely on third parties 
to manufacture commercial quantities of any products that we may successfully develop. 

We continue to expect to make significant investment in our manufacturing capabilities in Framingham, Massachusetts and in

partnerships with third-party organizations for our gene-editing programs in order to continue to advance and, in the future,
commercialize these programs.

In addition, as product candidates advance through our pipeline, our commercial plans may change. In particular, some of our 
research programs target potentially larger indications. Data, the size of the development programs, the size of the target market, the
size of a commercial infrastructure and manufacturing needs may all influence our strategies in the United States, Europe and the rest 
of the world. Outside of the United States and Europe, where appropriate, we may elect in the future to utilize strategic partners, 
distributors or contract sales forces to assist in the commercialization of our products. In certain instances, we may consider building 
our own commercial infrastructure.

Competition

The biotechnology and pharmaceutical industries, including in the gene editing, gene therapy and cell therapy fields, are 
characterized by rapidly advancing technologies, intense competition and a strong emphasis on intellectual property and proprietary 
products. While we believe that our technology, development experience and scientific knowledge provide us with competitive 
advantages, we currently face, and will continue to face, substantial competition from many different sources, including large 
pharmaceutical, specialty pharmaceutical and biotechnology companies; academic institutions and governmental agencies; and public
and private research institutions, some or all of which may have greater access to capital or resources than we do. For any products
that we may ultimately commercialize, not only will we compete with any existing therapies and those therapies currently in 
development, but we will also have to compete with new therapies that may become available in the future. 

36

We compete in the segments of the pharmaceutical, biotechnology and other related markets that utilize technologies

encompassing genomic medicines to create therapies, including gene editing, gene therapy and cell therapy. In addition, we compete 
with companies working to develop therapies in areas related to our specific research and development programs. 

Our platform and product focus is on the development of therapies using CRISPR/Cas9 gene-editing technology. We are aware 

of several companies focused on developing therapies in various indications using CRISPR/Cas9 gene-editing technology, including
Intellia Therapeutics and Editas Medicine. In addition, several academic groups have developed new gene-editing technologies based 
on CRISPR/Cas9, such as base editing and prime editing, that may have utility in therapeutic development. Companies seeking to 
develop therapies based on these technologies include Beam Therapeutics and Prime Medicine.

There are also companies developing therapies using additional gene-editing technologies, such as TALENs, meganucleases and 

ZFNs. These companies include 2seventy bio, Allogene Therapeutics, Cellectis, Precision BioSciences and Sangamo Therapeutics.

We are also aware of companies developing therapies in various areas related to our specific research and development 
programs. In hemoglobinopathies, these companies include Acceleron Pharma, Aruvant Therapeutics, Beam Therapeutics, bluebird 
bio, Editas Medicine, Global Blood Therapeutics, Novartis Pharmaceuticals, and Sangamo Therapeutics. In immuno-oncology, these 
companies include 2seventy bio, Allogene Therapeutics, Bristol Myers Squibb, Caribou Biosciences, Cellectis, Fate Therapeutics, 
Gilead Sciences, Legend Biotech, Novartis Pharmaceuticals, Poseida Therapeutics and Precision BioSciences. In regenerative 
medicine, these companies include BlueRock Therapeutics (acquired by Bayer in 2019), Sana Biotechnology and Semma
Therapeutics (acquired by Vertex in 2019). In in vivo, these companies include Editas Medicine, Intellia Therapeutics, Sarepta
Therapeutics, Ultragenyx and Verve Therapeutics.

Gene editing is a highly active field of research and new technologies, related or unrelated to CRISPR, may be discovered and 

create new competition. These new technologies could have advantages over CRISPR/Cas9 gene editing in some applications and 
there can be no certainty that other gene-editing technologies will not be considered better or more attractive than our technology for 
the development of products. For example, Cas9 may be determined to be less attractive than other CRISPR proteins, such as Cas12a
or novel Cas enzymes that have yet to be discovered, or other CRISPR-associated nuclease variants that can edit human DNA, such as 
base editors and prime editors.

In addition to competition from other gene-editing therapies or gene or cell therapies, any product we may develop may also 

face competition from other types of therapies, such as small molecule, antibody or protein therapies. In addition, new scientific
discoveries may cause CRISPR/Cas9 technology, or gene editing as a whole, to be considered an inferior form of therapy. 

In addition, many of our current or potential competitors, either alone or with their collaboration partners, have significantly
greater financial resources and expertise in research and development, manufacturing, preclinical testing, conducting clinical trials,
obtaining regulatory approvals and marketing approved products than we do. Mergers and acquisitions in the pharmaceutical, 
biotechnology, and gene and cell therapy industries may result in even more resources being concentrated among a smaller number of 
our competitors. Smaller or early-stage companies may also prove to be significant competitors, particularly through collaborative 
arrangements with large and established companies. These competitors also compete with us in recruiting and retaining qualified 
scientific and management personnel and establishing clinical trial sites and patient registration for clinical trials, as well as in
acquiring technologies complementary to, or necessary for, our programs. Our commercial opportunity could be reduced or eliminated 
if our competitors develop and commercialize products that are safer, more effective, have fewer or less severe side effects, are more 
convenient, have broader acceptance and higher rates of reimbursement by third-party payors or are less expensive than any products
that we may develop. Our competitors also may obtain FDA or other regulatory approval for their products more rapidly than we may
obtain approval for ours, which could result in our competitors establishing a strong market position before we are able to enter the
market. Additionally, technologies developed by our competitors may render our potential product candidates uneconomical or 
obsolete, and we may not be successful in marketing any product candidates we may develop against competitors. The key
competitive factors affecting the success of all of our programs are likely to be their efficacy, safety, convenience, and availability of 
reimbursement.

If our current programs are approved for the indications for which we are currently planning clinical trials, they may compete
with other products currently under development, including gene editing, gene therapy, and cell therapy products. Competition with 
other related products currently under development may include competition for clinical trial sites, patient recruitment, and product 
sales. In addition, due to the intense research and development taking place in the gene-editing field, including by us and our 
competitors, the intellectual property landscape is in flux and highly competitive. There may be significant intellectual property 
related litigation and proceedings relating to our owned and in-licensed, and other third-party, intellectual property and proprietary 
rights in the future. For example, see our discussion of the ‘048 interference, the ‘115 interference and European opposition
proceedings in “Risk Factors – Risks Related to Intellectual Property - Third-party Claims Of Intellectual Property Infringement 
Against Us, Our Licensors Or Our Collaborators May Prevent Or Delay Our Product Discovery and Development Efforts.”

37

Government Regulation

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

Licensure and Regulation of Biologics in the United States

In the United States, our product candidates are regulated as biological products, or biologics, under the Public Health Service 
Act, or PHSA, and the Federal Food, Drug, and Cosmetic Act, or FDCA, and their implementing regulations. The failure to comply 
with the applicable U.S. requirements at any time during the product development process, including nonclinical testing, clinical
testing, the approval process or post-approval process, may subject an applicant to delays in the conduct of a study, regulatory review 
and approval, and/or administrative or judicial sanctions. These sanctions may include, but are not limited to, the FDA’s refusal to
allow an applicant to proceed with clinical testing, refusal to approve pending applications, license suspension or revocation, 
withdrawal of an approval, untitled or warning letters, adverse publicity, product recalls, product seizures, total or partial suspension 
of production or distribution, injunctions, fines, and civil or criminal investigations and penalties brought by the FDA or the 
Department of Justice or other governmental entities. 

An applicant seeking approval to market and distribute a new biologic in the United States generally must satisfactorily 

complete each of the following steps: 

•

•

•

•

•

•

•

•

•

•

preclinical laboratory tests, animal studies and formulation studies all performed in accordance with the FDA’s Good 
Laboratory Practice, or GLP, regulations; 

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

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

performance of adequate and well-controlled human clinical trials to establish the safety, potency, and purity of the 
product candidate for each proposed indication, in accordance with the FDA’s Good Clinical Practice, or GCP, 
regulations; 

preparation and submission to the FDA of a Biologics License Application, or BLA, for a biologic product requesting 
marketing for one or more proposed indications, including submission of detailed information on the manufacture and 
composition of the product and proposed labeling; 

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

satisfactory completion of one or more FDA inspections of the manufacturing facility or facilities, including those of third 
parties, at which the product, or components thereof, are produced to assess compliance with cGMP requirements and to 
assure that the facilities, methods, and controls are adequate to preserve the product’s identity, strength, quality, and 
purity, and, if applicable, the FDA’s current good tissue practice, or CGTP, for the use of human cellular and tissue 
products;

satisfactory completion of any FDA audits of the nonclinical study and clinical trial sites to assure compliance with GLPs
and GCPs, respectively, and the integrity of clinical data in support of the BLA; 

payment of user fees and securing FDA approval of the BLA; and 

compliance with any post-approval requirements, including the potential requirement to implement a Risk Evaluation and 
Mitigation Strategy, or REMS, adverse event reporting, and compliance with any post-approval studies required by the 
FDA. 

38

Preclinical Studies and Investigational New Drug Application

Before testing any biologic product candidate in humans, including a gene therapy product candidate, the product candidate 
must undergo preclinical testing. Preclinical tests include laboratory evaluations of product chemistry, formulation and stability, as
well as studies to evaluate the potential for efficacy and toxicity in animals. The conduct of the preclinical tests and formulation of the 
compounds for testing must comply with federal regulations and requirements. The results of the preclinical tests, together with 
manufacturing information and analytical data, are submitted to the FDA as part of an IND application. The IND automatically
becomes effective 30 days after receipt by the FDA, unless before that time the FDA imposes a clinical hold based on concerns or 
questions about the product or conduct of the proposed clinical trial, including concerns that human research subjects would be 
exposed to unreasonable and significant health risks. In that case, the IND sponsor and the FDA must resolve any outstanding FDA 
concerns before the clinical trials can begin. 

As a result, submission of the IND may result in the FDA not allowing the trials to commence or not allowing the trial to 
commence on the terms originally specified by the sponsor in the IND. If the FDA raises concerns or questions either during this
initial 30-day period, or at any time during the conduct of the IND study, including safety concerns or concerns due to non-
compliance, it may impose a partial or complete clinical hold. This order issued by the FDA would either delay a proposed clinical 
study or cause suspension of an ongoing study, or in the case of a partial clinical hold limit a study, until all outstanding concerns have 
been adequately addressed and the FDA has notified the company that investigations may proceed or recommence but only under 
terms authorized by the FDA. This could cause significant delays or difficulties in completing planned clinical studies in a timely
manner. 

Human Clinical Trials in Support of a BLA

Clinical trials involve the administration of the investigational product candidate to healthy volunteers or patients with the 

disease to be treated under the supervision of a qualified principal investigator in accordance with GCP requirements. Clinical trials 
are conducted under study protocols detailing, among other things, the objectives of the study, inclusion and exclusion criteria, the 
parameters to be used in monitoring safety, and the effectiveness criteria to be evaluated. A protocol for each clinical trial and 
subsequent protocol amendments must be submitted to the FDA as part of the IND.

A sponsor who wishes to conduct a clinical trial outside the United States may, but need not, obtain FDA authorization to
conduct the clinical trial under an IND. If a non-U.S. clinical trial is not conducted under an IND, the sponsor may submit data from a
well-designed and well-conducted clinical trial to the FDA in support of the BLA so long as the clinical trial is conducted in 
compliance with GCP and the FDA is able to validate the data from the study through an onsite inspection if the FDA deems it 
necessary. 

Further, each clinical trial must be reviewed and approved by an IRB either centrally or individually at each institution at which
the clinical trial will be conducted. The IRB will consider, among other things, clinical trial design, subject informed consent, ethical 
factors, and the safety of human subjects. An IRB must operate in compliance with FDA regulations. The FDA or the clinical trial
sponsor may suspend or terminate a clinical trial at any time for various reasons, including a finding that the clinical trial is not being 
conducted in accordance with FDA requirements or the subjects or patients are being exposed to an unacceptable health risk. 
Similarly, an IRB can suspend or terminate approval of a clinical trial at its institution if the clinical trial is not being conducted in 
accordance with the IRB’s requirements or if the drug has been associated with unexpected serious harm to patients. Clinical testing
also must satisfy extensive GCP rules and the requirements for informed consent. Additionally, some clinical trials are overseen by an
independent group of qualified experts organized by the clinical trial sponsor, known as a data safety monitoring board or committee.
This group may recommend continuation of the study as planned, changes in study conduct, or cessation of the study at designated 
check points based on access to certain data from the study.

In addition to the submission of an IND to the FDA before initiation of a clinical trial in the United States, certain human 
clinical trials involving recombinant or synthetic nucleic acid molecules are subject to oversight of institutional biosafety committees, 
or IBCs, as set forth in the NIH Guidelines for Research Involving Recombinant or Synthetic Nucleic Acid Molecules, or NIH 
Guidelines. Under the NIH Guidelines, recombinant and synthetic nucleic acids are defined as: (i) molecules that are constructed by 
joining nucleic acid molecules and that can replicate in a living cell (i.e., recombinant nucleic acids); (ii) nucleic acid molecules that 
are chemically or by other means synthesized or amplified, including those that are chemically or otherwise modified but can base pair 
with naturally occurring nucleic acid molecules (i.e., synthetic nucleic acids); or (iii) molecules that result from the replication of those 
described in (i) or (ii). Specifically, under the NIH Guidelines, supervision of human gene transfer trials includes evaluation and 
assessment by an IBC, a local institutional committee that reviews and oversees research utilizing recombinant or synthetic nucleic 
acid molecules at that institution. The IBC assesses the safety of the research and identifies any potential risk to public health or the 
environment, and such review may result in some delay before initiation of a clinical trial. While the NIH Guidelines are not 
mandatory unless the research in question is being conducted at or sponsored by institutions receiving NIH funding of recombinant or 

39

synthetic nucleic acid molecule research, many companies and other institutions not otherwise subject to the NIH Guidelines
voluntarily follow them.

Clinical trials typically are conducted in three sequential phases, but the phases may overlap or be combined. Additional studies

may be required after approval. 

•

•

•

Phase 1 clinical trials are initially conducted in a limited population to test the product candidate for safety, including 
adverse effects, dose tolerance, absorption, metabolism, distribution, excretion, and pharmacodynamics in healthy humans
or, on occasion, in patients, such as cancer patients.

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

Phase 3 clinical trials are undertaken within an expanded patient population to further evaluate dosage and gather the 
additional information about effectiveness and safety that is needed to evaluate the overall benefit-risk relationship of the 
drug and to provide an adequate basis for physician labeling.

Progress reports detailing the results, if known, of the clinical trials must be submitted at least annually to the FDA. Written IND 

safety reports must be submitted to the FDA and the investigators within 15 calendar days of receipt by the sponsor or its agents after 
determining that the information qualifies for such expedited reporting. IND safety reports are required for serious and unexpected 
suspected adverse events, findings from other studies or animal or in vitro testing that suggest a significant risk to humans exposed to
the drug, and any clinically important increase in the rate of a serious suspected adverse reaction over that listed in the protocol or 
investigator brochure. Additionally, a sponsor must notify FDA within 7 calendar days after receiving information concerning any 
unexpected fatal or life-threatening suspected adverse reaction. 

In some cases, the FDA may approve a BLA for a product candidate but require the sponsor to conduct additional clinical trials 

to further assess the product candidate’s safety and effectiveness after approval. Such post-approval trials are typically referred to as
Phase 4 clinical trials. These studies are used to gain additional experience from the treatment of patients in the intended therapeutic 
indication and to document a clinical benefit in the case of biologics approved under accelerated approval regulations. Failure to
exhibit due diligence with regard to conducting Phase 4 clinical trials could result in withdrawal of approval for products. 

Guidance Governing Gene Therapy Products

The FDA has defined a gene therapy product as one that mediates its effects by transcription and/or translation of transferred 
genetic material or by specifically altering host (human) genetic sequences. Examples of gene therapy products include nucleic acids
(e.g., plasmids, in vitro transcribed ribonucleic acid), genetically modified microorganisms (e.g., viruses, bacteria, fungi), engineered 
site specific nucleases used for human genome editing and ex vivo
 genetically modified human cells. The products may be used to 
modify cells in vivo or transferred to cells ex vivo prior to administration to the recipient. Within the FDA, the Center for Biologics 
Evaluation and Research, or CBER, regulates gene therapy products. Within the CBER, the review of gene therapy and related 
products is consolidated in the Office of Tissues and Advanced Therapies, and the FDA has established the Cellular, Tissue and Gene
Therapies Advisory Committee to advise CBER on its reviews. The FDA and the NIH have published guidance documents with
respect to the development and submission of gene therapy protocols.

d

Although the FDA has indicated that its guidance documents regarding gene therapies are not legally binding, we believe that 
our compliance with them is likely necessary to gain approval for any product candidate we may develop. The guidance documents 
provide additional factors that the FDA will consider at each of the above stages of development and relate to, among other things, the
proper preclinical assessment of gene therapies; the chemistry, manufacturing, and control information that should be included in an 
IND application; the proper design of tests to measure product potency in support of an IND or BLA application; and measures to 
observe delayed adverse effects in subjects who have been exposed to investigational gene therapies when the risk of such effects is 
high. Further, the FDA usually recommends that sponsors observe subjects for potential gene therapy-related delayed adverse events.
Depending on the product type, long term follow up can be up to 15 years or as little as five years. 

Compliance with cGMP and CGTP Requirements

Before approving a BLA, the FDA typically will inspect the facility or facilities where the product is manufactured. The FDA
will not approve an application unless it determines that the manufacturing processes and facilities are in full compliance with cGMP
requirements and adequate to assure consistent production of the product within required specifications. The PHSA emphasizes the 
importance of manufacturing control for products like biologics whose attributes cannot be precisely defined. 

40

For a gene therapy product, the FDA also will not approve the product if the manufacturer is not in compliance with CGTP. 

These requirements are found in FDA regulations that govern the methods used in, and the facilities and controls used for, the 
manufacture of human cells, tissues, and cellular and tissue-based products, or HCT/Ps, which are human cells or tissue intended for 
implantation, transplant, infusion, or transfer into a human recipient. The primary intent of the CGTP requirements is to ensure that 
cell and tissue-based products are manufactured in a manner designed to prevent the introduction, transmission, and spread of 
communicable disease. FDA regulations also require tissue establishments to register and list their HCT/Ps with the FDA and, when
applicable, to evaluate donors through screening and testing. 

Manufacturers and others involved in the manufacture and distribution of products must also register their establishments with 

the FDA and certain state agencies for products intended for the U.S. market, and with analogous health regulatory agencies for 
products intended for other markets globally. Both U.S. and non-U.S. manufacturing establishments must register and provide 
additional information to the FDA and/or other health regulatory agencies upon their initial participation in the manufacturing process. 
Any product manufactured by or imported from a facility that has not registered, whether U.S. or non-U.S., is deemed misbranded 
under the FDCA, and could be affected by similar as well as additional compliance issues in other jurisdictions. Establishments may 
be subject to periodic unannounced inspections by government authorities to ensure compliance with cGMPs and other laws.
Manufacturers may also have to provide, on request, electronic or physical records regarding their establishments. Delaying, denying,
limiting, or refusing inspection by the FDA or other governing health regulatory agency may lead to a product being deemed to be
adulterated.

Review and Approval of a BLA 

The results of product candidate development, preclinical testing, and clinical trials, including negative or ambiguous results as

well as positive findings, are submitted to the FDA as part of a BLA requesting a license to market the product. The BLA must contain 
extensive manufacturing information and detailed information on the composition of the product and proposed labeling as well as 
payment of a user fee. 

The FDA has 60 days after submission of the application to conduct an initial review to determine whether it is sufficient to 

accept for filing based on the agency’s threshold determination that it is sufficiently complete to permit substantive review. Once the 
submission has been accepted for filing, the FDA begins an in-depth review of the application. Under the goals and policies agreed to 
by the FDA under the Prescription Drug User Fee Act, or the PDUFA, the FDA has ten months in which to complete its initial review 
of a standard application and respond to the applicant, and six months for a priority review of the application. The FDA does not 
always meet its PDUFA goal dates for standard and priority BLAs. The review process may often be significantly extended by FDA 
requests for additional information or clarification. The review process and the PDUFA goal date may be extended by three months if 
the FDA requests or if the applicant otherwise provides through the submission of a major amendment additional information or 
clarification regarding information already provided in the submission within the last three months before the PDUFA goal date. 

Under the PHSA, the FDA may approve a BLA if it determines that the product is safe, pure, and potent and the facility where 

the product will be manufactured meets standards designed to ensure that it continues to be safe, pure, and potent.

On the basis of the FDA’s evaluation of the application and accompanying information, including the results of the inspection of 
the manufacturing facilities and any FDA audits of nonclinical study and clinical trial sites to assure compliance with GLPs and GCPs,
respectively, the FDA may issue an approval letter or a complete response letter. An approval letter authorizes commercial marketing
of the product with specific prescribing information for specific indications. If the application is not approved, the FDA will issue a 
complete response letter, which will contain the conditions that must be met in order to secure final approval of the application, and 
when possible will outline recommended actions the sponsor might take to obtain approval of the application. 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. 
Such resubmissions are classified under PDUFA as either Class 1 or Class 2. The classification of a resubmission is based on the 
information submitted by an applicant in response to an action letter. Under the goals and policies agreed to by the FDA under 
PDUFA, the FDA has two months to review a Class 1 resubmission and six months to review a Class 2 resubmission. The FDA will 
not approve an application until issues identified in the complete response letter have been addressed. Alternatively, sponsors that 
receive a complete response letter may either withdraw the application or request a hearing.

The FDA may also refer the application to an advisory committee for review, evaluation, and recommendation as to whether the 

application should be approved. In particular, the FDA may refer applications for novel biologic products or biologic products that 
present difficult questions of safety or efficacy to an advisory committee. Typically, an advisory committee is a panel of independent 
experts, including clinicians and other scientific experts, that reviews, evaluates, and provides a recommendation as to whether the 
application should be approved and under what conditions. The FDA is not bound by the recommendations of an advisory committee, 
but it considers such recommendations carefully when making decisions.

41

If the FDA approves a new product, it may limit the approved indications for use of the product. It may also require that 
contraindications, warnings or precautions be included in the product labeling. In addition, the FDA may call for post-approval 
studies, including Phase 4 clinical trials, to further assess the product’s safety after approval. The agency may also require testing and 
surveillance programs to monitor the product after commercialization, or impose other conditions, including distribution restrictions or 
other risk management mechanisms, including REMS, to help ensure that the benefits of the product outweigh the potential risks. 
REMS can include medication guides, communication plans for healthcare professionals, and elements to assure safe use, or ETASU. 
ETASU can include, but are not limited to, specific or special training or certification for prescribing or dispensing, dispensing only
under certain circumstances, special monitoring, and the use of patent registries. The FDA may prevent or limit further marketing of a 
product based on the results of post-market studies or surveillance programs. After approval, many types of changes to the approved 
product, such as adding new indications, certain manufacturing changes and additional labeling claims, are subject to further testing 
requirements and FDA review and approval. 

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

The FDA is authorized to designate certain products for expedited review if they are intended to address an unmet medical need 

in the treatment of a serious or life-threatening disease or condition. These programs are referred to as fast track designation, 
breakthrough therapy designation, priority review, and regenerative advanced therapy designation. 

Specifically, the FDA may designate a product for fast track review if it is intended, whether alone or in combination with one 

or more other products, for the treatment of a serious or life-threatening disease or condition, and it demonstrates the potential to
address unmet medical needs for such a disease or condition. For fast track products, sponsors may have greater interactions with the 
FDA and the FDA may initiate review of sections of a fast track product’s application before the application is complete. This rolling 
review may be available if the FDA determines, after preliminary evaluation of clinical data submitted by the sponsor, that a fast track 
product may be effective. The sponsor must also provide, and the FDA must approve, a schedule for the submission of the remaining 
information and the sponsor must pay applicable user fees. However, the FDA’s time period goal for reviewing a fast track application
does not begin until the last section of the application is submitted. In addition, the fast track designation may be withdrawn by the
FDA if the FDA believes that the designation is no longer supported by data emerging in the clinical trial process, or if the designated 
drug development program is no longer being pursued. 

Second, FDA has a regulatory scheme allowing for expedited review of products designated as “breakthrough therapies.” A 

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

Third, the FDA may designate a product for priority review if it is a product that treats a serious condition and, if approved, 

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

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

Accelerated Approval Pathway 

The FDA may grant accelerated approval to a product for a serious or life-threatening condition that provides meaningful

therapeutic advantage to patients over existing treatments based upon a determination that the product has an effect on a surrogate 
endpoint that is reasonably likely to predict clinical benefit. The FDA may also grant accelerated approval for such a condition when 

42

the product has an effect on an intermediate clinical endpoint that can be measured earlier than an effect on irreversible morbidity or 
mortality, or IMM, and that is reasonably likely to predict an effect on IMM or other clinical benefit, taking into account the severity,
rarity, or prevalence of the condition and the availability or lack of alternative treatments. Products granted accelerated approval must 
meet the same statutory standards for safety and effectiveness as those granted traditional approval. 

For the purposes of accelerated approval, a surrogate endpoint is a marker, such as a laboratory measurement, radiographic
image, physical sign, or other measure that is thought to predict clinical benefit but is not itself a measure of clinical benefit. Surrogate 
endpoints can often be measured more easily or more rapidly than clinical endpoints. An intermediate clinical endpoint is a 
measurement of a therapeutic effect that is considered reasonably likely to predict the clinical benefit of a product, such as an effect on 
IMM. The FDA has limited experience with accelerated approvals based on intermediate clinical endpoints but has indicated that such
endpoints generally could support accelerated approval where a study demonstrates a relatively short-term clinical benefit in a chronic 
disease setting in which assessing durability of the clinical benefit is essential for traditional approval, but the short-term benefit is 
considered reasonably likely to predict long-term benefit. 

The accelerated approval pathway is most often used in settings in which the course of a disease is long and an extended period 

of time is required to measure the intended clinical benefit of a product, even if the effect on the surrogate or intermediate clinical 
endpoint occurs rapidly. Thus, accelerated approval has been used extensively in the development and approval of products for 
treatment of a variety of cancers in which the goal of therapy is generally to improve survival or decrease morbidity and the duration 
of the typical disease course requires lengthy and sometimes large trials to demonstrate a clinical or survival benefit. 

The accelerated approval pathway is usually contingent on a sponsor’s agreement to conduct, in a diligent manner, additional 
post-approval confirmatory studies to verify and describe the product’s clinical benefit. As a result, a product candidate approved on
this basis is subject to rigorous post-marketing compliance requirements, including the completion of Phase 4 or post-approval clinical
trials to confirm the effect on the clinical endpoint. Failure to conduct required post-approval studies, or confirm a clinical benefit 
during post-marketing studies, would allow the FDA to withdraw the product from the market on an expedited basis. All promotional 
materials for product candidates approved under accelerated regulations are subject to prior review by the FDA. 

Post-Approval Regulation 

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

A product may also be subject to official lot release, meaning that the manufacturer is required to perform certain tests on each

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

Once an approval is granted, the FDA may withdraw the approval if compliance with regulatory requirements is not maintained 

or if problems occur after the product reaches the market. Later discovery of previously unknown problems with a product, including
adverse events of unanticipated severity or frequency, or with manufacturing processes, or failure to comply with regulatory
requirements, may result in revisions to the approved labeling to add new safety information; imposition of post-market studies or 
clinical trials to assess new safety risks; or imposition of distribution or other restrictions under a REMS program. Other potential
consequences of a failure to comply with regulatory requirements include, among other things: 

•

•

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

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

43

•

•

•

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

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

injunctions or the imposition of civil or criminal penalties. 

The FDA strictly regulates marketing, labeling, advertising and promotion of licensed and approved products that are placed on 
the market. Pharmaceutical products may be promoted only for the approved indications and in accordance with the provisions of the 
approved label. The FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off-label uses, and 
a company that is found to have improperly promoted off-label uses may be subject to significant liability. 

Orphan Drug Designation

Orphan drug designation in the United States is designed to encourage sponsors to develop products intended for rare diseases

or conditions. In the United States, a rare disease or condition is statutorily defined as a condition that affects fewer than 200,000 
individuals in the United States or that affects more than 200,000 individuals in the United States and for which there is no reasonable
expectation that the cost of developing and making available the biologic for the disease or condition will be recovered from sales of 
the product in the United States. 

Orphan drug designation qualifies a company for tax credits and market exclusivity for seven years following the date of the 

product’s marketing approval if granted by the FDA. An application for designation as an orphan product can be made any time prior 
to the filing of an application for approval to market the product. A product becomes an orphan when it receives orphan drug
designation from the Office of Orphan Products Development, or OOPD, at the FDA based on acceptable confidential requests made 
under the regulatory provisions. The product must then go through the review and approval process for commercial distribution like
any other product. 

A sponsor may request orphan drug designation of a previously unapproved product or new orphan indication for an already
marketed product. In addition, a sponsor of a product that is otherwise the same product as an already approved orphan drug may seek 
and obtain orphan drug designation for the subsequent product for the same rare disease or condition if it can present a plausible
hypothesis that its product may be clinically superior to the first drug. More than one sponsor may receive orphan drug designation for 
the same product for the same rare disease or condition, but each sponsor seeking orphan drug designation must file a complete 
request for designation. 

The period of exclusivity begins on the date that the marketing application is approved by the FDA and applies only to the 
indication for which the product has been designated. The FDA may approve a second application for the same product for a different 
use or a second application for a clinically superior version of the product for the same use. The FDA cannot, however, approve the
same product made by another manufacturer for the same indication during the market exclusivity period unless it has the consent of 
the sponsor or the sponsor is unable to provide sufficient quantities.

Pediatric Studies and Exclusivity

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

The FDA may, on its own initiative or at the request of the applicant, grant deferrals for submission of some or all pediatric data

until after approval of the product for use in adults, or full or partial waivers from the pediatric data requirements. Unless otherwise 
required by regulation, the pediatric data requirements do not apply to products with orphan designation; however, they will apply to a 
BLA for a new active ingredient that is orphan-designated if the biologic is a molecularly targeted cancer product intended for the 
treatment of an adult cancer and is directed at a molecular target that the FDA determines to be substantially relevant to the growth or 
progression of a pediatric cancer. 

Pediatric exclusivity is another type of non-patent marketing exclusivity in the United States and, if granted, provides for the 
attachment of an additional six months of marketing protection to the term of any existing regulatory exclusivity, including the non-
patent and orphan exclusivity. This six-month exclusivity may be granted if a BLA sponsor submits pediatric data that fairly respond 

44

to a written request from the FDA for such data. The data do not need to show the product to be effective in the pediatric population
studied; rather, if the clinical trial is deemed to fairly respond to the FDA’s request, the additional protection is granted. If reports of 
requested pediatric studies are submitted to and accepted by the FDA within the statutory time limits, whatever statutory or regulatory 
periods of exclusivity or patent protection cover the product are extended by six months. This is not a patent term extension, but it 
effectively extends the regulatory period during which the FDA cannot approve another application.

Biosimilars and Exclusivity

The Patient Protection and Affordable Care Act, or ACA, which was signed into law in March 2010, included a subtitle called 
the Biologics Price Competition and Innovation Act of 2009 or BPCIA. The BPCIA established a regulatory scheme authorizing the 
FDA to approve biosimilars and interchangeable biosimilars. The FDA has issued several guidance documents outlining an approach 
to review and approval of biosimilars. 

Under the BPCIA, a manufacturer may submit an application for licensure of a biologic product that is “biosimilar to” or 
“interchangeable with” a previously approved biological product or “reference product.” In order for the FDA to approve a biosimilar 
product, it must find that there are no clinically meaningful differences between the reference product and proposed biosimilar product 
in terms of safety, purity, and potency. For the FDA to approve a biosimilar product as interchangeable with a reference product, the
agency must find that the biosimilar product can be expected to produce the same clinical results as the reference product, and (for 
products administered multiple times) that the biologic and the reference biologic may be switched after one has been previously 
administered without increasing safety risks or risks of diminished efficacy relative to exclusive use of the reference biologic. 

Under the BPCIA, an application for a biosimilar product may not be submitted to the FDA until four years following the date 

of approval of the reference product. The FDA may not approve a biosimilar product until 12 years from the date on which the
reference product was approved. Even if a product is considered to be a reference product eligible for exclusivity, another company 
could market a competing version of that product if the FDA approves a full BLA for such product containing the sponsor’s own 
preclinical data and data from adequate and well-controlled clinical trials to demonstrate the safety, purity, and potency of their 
product. The BPCIA also created certain exclusivity periods for biosimilars approved as interchangeable products. At this juncture, it 
is unclear whether products deemed “interchangeable” by the FDA will, in fact, be readily substituted by pharmacies, which are 
governed by state pharmacy law. 

Patent Term Restoration and Extension

A patent claiming a new biologic product may be eligible for a limited patent term extension under the Drug Price Competition 
and Patent Term Restoration Act of 1984, or Hatch-Waxman Amendments, which permits a patent restoration of up to five years for 
patent term lost during product development and FDA regulatory review. The restoration period granted on a patent covering a
product is typically one-half the time between the effective date of an IND and the submission date of a marketing application, plus 
the time between the submission date of the marketing application and the ultimate approval date, less any time the applicant failed to 
act with due diligence. Patent term restoration cannot be used to extend the remaining term of a patent past a total of 14 years from the 
product’s approval date. Only one patent applicable to an approved product is eligible for the extension, and the application for the 
extension must be submitted prior to the expiration of the patent in question. A patent that covers multiple products for which approval 
is sought can only be extended in connection with one of the approvals. The USPTO reviews and approves the application for any 
patent term extension or restoration in consultation with the FDA. 

Regulation And Procedures Governing Approval Of Medicinal Products In Europe

In order to market any product outside of the United States, a company must also comply with numerous and varying regulatory 

requirements of other countries and jurisdictions regarding quality, safety and efficacy and governing, among other things, clinical
trials, marketing authorization, commercial sales and distribution of products. Whether or not it obtains FDA approval for a product,
an applicant will need to obtain the necessary approvals by the comparable health regulatory authorities before it can commence 
clinical trials or marketing of the product in those countries or jurisdictions. Specifically, the process governing approval of medicinal 
products in Europe generally follows the same lines as in the United States, although the approval of a medicinal product in the United 
States is no guarantee of approval of the same product in Europe, either at all or within the same timescale as approval may be granted 
in the United States. The process entails satisfactory completion of preclinical studies and adequate and well-controlled clinical trials
to establish the safety and efficacy of the product for each proposed indication. It also requires the submission to the EMA, or the
relevant competent authorities of a marketing authorization application, or MAA, and granting of a marketing authorization by the 
EMA or these authorities before the product can be marketed and sold in Europe.  

45

Clinical Trial Approval 

An applicant for a clinical trial authorization in the EU must obtain approval from the national competent authority, or NCA, of 
an EU Member State in which the clinical trial is to be conducted, or in multiple Member States if the clinical trial is to be conducted 
in a number of Member States. Furthermore, the applicant may only start a clinical trial at a specific study site after the ethics
committee, or EC, has issued a favorable opinion in relation to the clinical trial.

In April 2014, the EU adopted a new Clinical Trials Regulation (EU) No 536/2014, which replace the Clinical Trials Directive

2001/20/EC on 31 January 2022. It overhauls the current system of approvals for clinical trials in the EU. Specifically, the new 
legislation, which is directly applicable in all EU Member States (meaning that no national implementing legislation in each EU 
Member State is required), aims at simplifying and streamlining the approval of clinical trials in the EU. For instance, the new Clinical
Trials Regulation provides for a streamlined application procedure via a single-entry point and strictly defined deadlines for the
assessment of clinical trial applications.

Marketing Authorization

To obtain a marketing authorization for a product in the EU, an applicant must submit an MAA, either under a centralized 

procedure administered by the EU or one of the procedures administered by competent authorities in the EU Member States 
(decentralized procedure, national procedure, or mutual recognition procedure). A marketing authorization may be granted only to an
applicant established in the EEA (comprising the EU Member States plus Iceland, Norway and Liechtenstein). Regulation (EC) No 
1901/2006 provides that prior to obtaining a marketing authorization in the EEA, an applicant must demonstrate compliance with all 
measures included in an EMA-approved pediatric investigation plan, or PIP, covering all subsets of the pediatric population, unless
the EMA has granted a product-specific waiver, class waiver, or a deferral for one or more of the measures included in the PIP. 

The centralized procedure provides for the grant of a single marketing authorization by the European Commission that is valid 

throughout the EEA. Pursuant to Regulation (EC) No. 726/2004, the centralized procedure is compulsory for specific products,
including for medicines produced by certain biotechnological processes, products designated as orphan medicinal products, advanced 
therapy medicinal products, or ATMPs, and products with a new active substance indicated for the treatment of certain diseases, 
including products for the treatment of cancer, HIV or AIDS, diabetes, neurodegenerative disorders, auto-immune and other immune 
dysfunctions and viral diseases. For those products for which the use of the centralized procedure is not mandatory, applicants may 
elect to use the centralized procedure where either the product contains a new active substance indicated for the treatment of other 
diseases, or where the applicant can show that the product constitutes a significant therapeutic, scientific or technical innovation or for 
which a centralized process is in the interest of patients at an EU level. 

Specifically, the grant of marketing authorization in the EU for products containing viable human tissues or cells such as gene 

therapy medicinal products is governed by Regulation (EC) No 1394/2007 on ATMPs, read in combination with Directive 
2001/83/EC of the European Parliament and of the Council, commonly known as the Community code on medicinal products. 
Regulation (EC) No 1394/2007 lays down specific rules concerning the authorization, supervision, and pharmacovigilance of gene 
therapy medicinal products, somatic cell therapy medicinal products, and tissue engineered products. Manufacturers of advanced 
therapy medicinal products must demonstrate the quality, safety, and efficacy of their products to the Committee for Advanced 
Therapies, or CAT, at the EMA, which conducts a scientific assessment of the MAA and provides an opinion regarding the MAA for 
an ATMP. The European Commission grants or refuses marketing authorization in light of the opinion delivered by EMA. 

The Committee for Medicinal Products for Human Use, or the CHMP, established at the EMA is responsible for issuing a final

opinion on whether an ATMP meets the required quality, safety and efficacy requirements, and whether a product has a positive 
benefit/risk profile. Under the centralized procedure in the EU, the maximum timeframe for the evaluation of an MAA by the EMA is
210 days from receipt of a valid MAA, excluding clock stops when additional information or written or oral explanation is to be 
provided by the applicant in response to questions of the CHMP. Clock stops may extend the timeframe of evaluation of an MAA
considerably beyond 210 days. Where the CHMP gives a positive opinion, it provides the opinion, together with supporting
documentation, to the European Commission, who make the final decision to grant a marketing authorization, which is issued within
67 days of receipt of the EMA's recommendation. Accelerated evaluation may be granted by the CHMP in exceptional cases, when a 
medicinal product is expected to be of major interest from the point of view of public health and, in particular, from the viewpoint of 
therapeutic innovation. If the CHMP accepts such a request, the time frame of 210 days for assessment will be reduced to 150 days
(excluding clock stops), but it is possible that the CHMP may revert to the standard time limit for the centralized procedure if it 
determines that the application is no longer appropriate to conduct an accelerated assessment.

46

Now that the UK (which comprises Great Britain and Northern Ireland) has left the EU, Great Britain will no longer be covered 
by centralized marketing authorizations (under the Northern Ireland Protocol, centralized marketing authorizations will continue to be 
recognized in Northern Ireland). All medicinal products with a current centralized marketing authorization were automatically
converted to Great Britain marketing authorizations on January, 1 2021. For a period of two years from January 1, 2021, the
Medicines and Healthcare products Regulatory Agency, or MHRA, the UK medicines regulator, may rely on a decision taken by the
European Commission on the approval of a new marketing authorization in the centralized procedure, in order to more quickly grant a
new Great Britain marketing authorization. A separate application will, however, still be required.

PRIME scheme

In March 2016, the EMA launched an initiative to facilitate development of product candidates in indications, often rare, for 
which few or no therapies currently exist, by, amongst other things, offering early dialogue with, and regulatory support from, the 
EMA. The scheme is intended to stimulate innovation, optimize development and enable accelerated assessment of PRIority
Medicines, or PRIME, by building upon the scientific advice scheme and accelerated assessment procedure offered by EMA. The 
scheme is voluntary and eligibility criteria must be met for a medicine to qualify for PRIME.

The PRIME scheme is open to medicines under development and for which the applicant intends to apply for an initial 
marketing authorization application through the centralized procedure. Eligible products must target conditions for which there is an 
unmet medical need (meaning there is no satisfactory method of diagnosis, prevention or treatment in the EU or, if there is, the new
medicine will bring a major therapeutic advantage) and they must demonstrate the potential to address the unmet medical need by 
introducing new methods or therapy or improving existing ones. Applicants will typically be at the exploratory clinical trial phase of 
development, and will have preliminary clinical evidence in patients to demonstrate the promising activity of the medicine and its
potential to address, to a significant extent, an unmet medical need. In exceptional cases, applicants from the academic sector or SMEs
(small and medium sized enterprises) may submit an eligibility request at an earlier stage of development if compelling non-clinical 
data in a relevant model provide early evidence of promising activity, and first in man studies indicate adequate exposure for the
desired pharmacotherapeutic effects and tolerability.

If a medicine is selected for the PRIME scheme, the EMA:

•

•

•

•

•

appoints a rapporteur from the CHMP or from the CAT to provide continuous support and to build up knowledge of the 
medicine in advance of the filing of a marketing authorization application;

issues guidance on the applicant’s overall development plan and regulatory strategy;

organizes a kick-off meeting with the rapporteur and experts from relevant EMA committees and working groups;

provides a dedicated EMA contact person; and

provides scientific advice at key development milestones, involving additional stakeholders, such as health technology
assessment bodies and patients, as needed.

Medicines that are selected for the PRIME scheme are also expected to benefit from the EMA’s accelerated assessment 

procedure at the time of application for marketing authorization. Where, during the course of development, a medicine no longer 
meets the eligibility criteria, support under the PRIME scheme may be withdrawn.

Data and Market Exclusivity 

In the EU, innovate medicinal products approved on the basis of a complete independent data package qualify for eight years of 

data exclusivity upon grant of a marketing authorization and an additional two years of market exclusivity pursuant to Regulation 
(EC) No 726/2004, as amended, and Directive 2001/83/EC, as amended. Data exclusivity prevents applicants for authorizations of 
generics or biosimilars from referencing the innovator’s preclinical and clinical data contained in the dossier of the reference product 
when applying for a generic or biosimilar marketing authorization in the EU, during a period of eight years from the date on which the 
reference product was first authorized in the EU. During the additional two-year period of market exclusivity, a generic or biosimilar 
MAA can be submitted and the innovator’s data may be referenced, but no generic or biosimilar medicinal product can be marketed in 
the EU until the expiration of the market exclusivity period. The overall ten-year period will be extended to a maximum of eleven
years if, during the first eight years of those ten years, the marketing authorization holder obtains an authorization for one or more new
therapeutic indications which, during the scientific evaluation prior to authorization, are held to bring a significant clinical benefit in 
comparison with existing therapies. There is no guarantee that a product will be considered by the EMA to be an innovative medicinal 
product, and products may qualify for data exclusivity. Even if a product is considered to be an innovative medicinal product so that 
the innovator gains the prescribed period of data exclusivity, another company nevertheless could also market another version of the 

47

product if such company obtained a marketing authorization based on an MAA with a completely independent data package of 
pharmaceutical tests, preclinical tests and clinical trials.

Periods of Authorization and Renewals

A centralized marketing authorization is valid for five years, in principle, and it may be renewed after five years on the basis of 

a reevaluation of the risk-benefit balance by the EMA or by the competent authority of the authorizing EU Member State for a
nationally authorized product. Once renewed, the marketing authorization is valid for an unlimited period, unless the European
Commission or the competent authority decides, on justified grounds relating to pharmacovigilance, to proceed with one additional 
five-year renewal period. Any authorization that is not followed by the actual placement of the drug on the EU market (in the case of 
the centralized procedure), or on the market of the authorizing EU Member State, within three years after authorization ceases, to be
valid (the so-called sunset clause).

Orphan Drug Designation and Exclusivity

Regulation (EC) No 141/2000 and Regulation (EC) No 847/2000 provide that a product can be designated as an orphan drug by 

the European Commission if its sponsor can establish that: (1) the product is intended for the diagnosis, prevention or treatment of  a 
life-threatening or chronically debilitating condition; (2) either (a) such condition affects no more than five (5) in ten thousand 
(10,000) persons in the EU when the application is made; or (b) it is unlikely that the product, without benefits derived from orphan
status, would generate sufficient return in the EU to justify the necessary investment in its development; (3) there exists no satisfactory 
method of diagnosis, prevention, or treatment of such condition authorized for marketing in the EU or, if such method exists, the
product will be of significant benefit to those affected by that condition. 

An orphan drug designation provides a number of benefits, including fee reductions, regulatory assistance, and the ability to 
apply for a centralized EEA-wide marketing authorization. The grant of a marketing authorization for an orphan drug leads to a ten-
year period of market exclusivity. During this market exclusivity period, neither the European Commission nor the Member States can 
accept an application or grant a marketing authorization in respect of a “similar medicinal product.” A “similar medicinal product” is
defined as a medicinal product containing a similar active substance or substances as contained in an authorized orphan medicinal
product, and which is intended for the same therapeutic indication. The market exclusivity period for the authorized therapeutic
indication may, however, be reduced to six years if, at the end of the fifth year, it is established that the product no longer meets the
criteria for orphan drug designation because, for example, the product is sufficiently profitable not to justify market exclusivity. There 
are a few limited of derogations from the ten-year period of market exclusivity pursuant to which the European Commission may
grant a marketing authorization for a similar medicinal product in the same therapeutic indication, which are:

• where the second applicant can establish that although their product is similar to the orphan medicinal product already 

authorized, the second product is safer, more effective or otherwise clinically superior;

• where the marketing authorization holder consent to the second orphan medicinal product application; or

• where the marketing authorization holder cannot supply enough orphan medicinal product.

Regulatory Requirements after Marketing Authorization has been obtained

If an authorization for a medicinal product in the EU is obtained, the holder of the marketing authorization is required to comply
with a range of requirements applicable to the manufacturing, marketing, promotion and sale of the medicinal product. These include 
compliance with the EU’s stringent pharmacovigilance or safety reporting rules, pursuant to which post-authorization studies and 
additional monitoring obligations can be imposed. In addition, the manufacturing of authorized products, for which a separate 
manufacturer’s license is mandatory, must also be conducted in strict compliance with the applicable EU laws, regulations and 
guidance, including Directive 2001/83/EC, Directive 2003/94/EC, Regulation (EC) No 726/2004 and the European Commission 
Guidelines for Good Manufacturing Practice. These requirements include compliance with EU cGMP standards when manufacturing 
medicinal products and active pharmaceutical ingredients, including the manufacture of active pharmaceutical ingredients outside of 
the EU with the intention to import the active pharmaceutical ingredients into the EU. Finally, the marketing and promotion of 
authorized products, including industry-sponsored continuing medical education and advertising directed toward the prescribers of 
drugs and/or the general public, are strictly regulated in the EU. The advertising of prescription-only medicines to the general public is
not permitted in the EU.

The aforementioned EU rules are generally applicable in the EEA, which consists of the EU Member States, plus Norway, 

Liechtenstein and Iceland.

48

For other markets in which we might in the future seek to obtain marketing approval for the commercialization of products,
there are other health regulatory regimes for seeking approval, and we would need to ensure ongoing compliance with applicable 
health regulatory procedures and standards, as well as other governing laws and regulations for each applicable jurisdiction.

General Data Protection Regulation

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

Brexit and the Regulatory Framework in the United Kingdom

On June 23, 2016, the electorate in the UK voted in favor of leaving the EU (commonly referred to as “Brexit”), and the UK 
formally left the EU on January 31, 2020. There was a transition period during which EU pharmaceutical laws continued to apply to
the UK, which expired on December 31, 2020. However, the EU and the UK have concluded a trade and cooperation agreement, or 
TCA, which was provisionally applicable since January 1, 2021 and has been formally applicable since May 1, 2021. The TCA
includes specific provisions concerning pharmaceuticals, which include the mutual recognition of GMP, inspections of manufacturing 
facilities for medicinal products and GMP documents issued, but does not foresee wholesale mutual recognition of UK and EU 
pharmaceutical regulations. At present, Great Britain has implemented EU legislation on the marketing, promotion and sale of 
medicinal products through the Human Medicines Regulations 2012 (as amended) (under the Northern Ireland Protocol, the EU 
regulatory framework will continue to apply in Northern Ireland). The regulatory regime in Great Britain therefore currently aligns
with EU regulations, however it is possible that these regimes will diverge in future now that Great Britain’s regulatory system is
independent from the EU and the TCA does not provide for mutual recognition of UK and EU pharmaceutical legislation.

Furthermore, the Data Protection Act of 2018 in the United Kingdom “implements” and complements the EU’s GDPR, and is 

effective in the United Kingdom, On June 28, 2021, the European Commission adopted an adequacy decision in respect of transfers of 
personal data to the United Kingdom for a four-year period (until 27 June 2025). Similarly, the United Kingdom has determined that it 
considers all of the EU and EEA Member States to be adequate for the purposes of data protection. This ensures data flows between
the United Kingdom and the EU and EEA remain unaffected. 

Coverage, Pricing and Reimbursement 

Significant uncertainty exists as to the coverage and reimbursement status of any product candidates for which we may seek 

regulatory approval by the FDA or other government authorities. In the United States and markets in other countries, patients who are 
prescribed treatments for their conditions and providers performing the prescribed services generally rely on third-party payors to 
reimburse all or part of the associated healthcare costs. Patients are unlikely to use any product candidates we may develop unless
coverage is provided and reimbursement is adequate to cover a significant portion of the cost of such product candidates. Even if any 
product candidates we may develop are approved, sales of such product candidates will depend, in part, on the extent to which third-
party payors, including government health programs in the United States such as Medicare and Medicaid, commercial health insurers, 
and managed care organizations, provide coverage, and establish adequate reimbursement levels for, such product candidates. Factors 
a payor considers in determining reimbursement are based on whether the product is:

•

•

•

•

•

a covered benefit under its health plan;

safe, effective and medically necessary;

appropriate for the specific patient;

cost-effective; and

neither experimental nor investigational.

49

The process for determining whether a payor will provide coverage for a product may be separate from the process for setting

the price or reimbursement rate that the payor will pay for the product once coverage is approved. Third-party payors are increasingly
challenging the prices charged, examining the medical necessity, and reviewing the cost-effectiveness of medical products and 
services and imposing controls to manage costs. Third-party payors may limit coverage to specific products on an approved list, also
known as a formulary, which might not include all of the approved products for a particular indication.

In order to secure coverage and reimbursement for any product that might be approved for sale, a company may need to conduct 

expensive pharmacoeconomic studies in order to demonstrate the medical necessity and cost-effectiveness of the product, in addition 
to the costs required to obtain FDA or other comparable marketing approvals. Nonetheless, product candidates may not be considered 
medically necessary or cost effective. A decision by a third-party payor not to cover any product candidates we may develop could 
reduce physician utilization of such product candidates once approved and have a material adverse effect on our sales, results of 
operations and financial condition. Additionally, a payor’s decision to provide coverage for a product does not imply that an adequate
reimbursement rate will be approved. Further, one payor’s determination to provide coverage for a product does not assure that other 
payors will also provide coverage and reimbursement for the product, and the level of coverage and reimbursement can differ 
significantly from payor to payor. Third-party reimbursement and coverage may not be available to enable us to maintain price levels
sufficient to realize an appropriate return on our investment in product development.

The containment of healthcare costs also has become a priority of various federal, state and/or local governments, as well as 

other payors, within the U.S. and in other countries globally, and the prices of pharmaceuticals have been a focus in these efforts.
Governments and other payors have shown significant interest in implementing cost-containment programs, including price controls,
restrictions on reimbursement, and requirements for substitution of generic products. Adoption of price controls and cost-containment 
measures, and adoption of more restrictive policies in jurisdictions with existing controls and measures, could further limit a 
company’s revenue generated from the sale of any approved products. Coverage policies and third-party reimbursement rates may
change at any time. Even if favorable coverage and reimbursement status is attained for one or more products for which a company or 
its collaborators receive marketing approval, less favorable coverage policies and reimbursement rates may be implemented in the 
future.

Outside the United States, ensuring adequate coverage and payment for any product candidates we may develop will face 

challenges. Pricing of prescription pharmaceuticals is subject to governmental control in many countries. Pricing negotiations with
governmental authorities can extend well beyond the receipt of regulatory marketing approval for a product and may require us to
conduct a clinical trial that compares the cost effectiveness of any product candidates we may develop to other available therapies.
The conduct of such a clinical trial could be expensive and result in delays in our commercialization efforts. 

In the EU, pricing and reimbursement schemes vary widely from country to country. Some countries provide that products may

be marketed only after a reimbursement price has been agreed. Some countries may require the completion of additional studies that 
compare the cost-effectiveness of a particular product candidate to currently available therapies (so called health technology 
assessments, or HTAs) in order to obtain reimbursement or pricing approval. For example, the EU provides options for its Member 
States to restrict the range of products for which their national health insurance systems provide reimbursement and to control the 
prices of medicinal products for human use. EU Member States may approve a specific price for a product or it may instead adopt a
system of direct or indirect controls on the profitability of the company placing the product on the market. Other EU Member States 
allow companies to fix their own prices for products, but monitor and control prescription volumes and issue guidance to physicians to
limit prescriptions. Recently, many countries in the EU have increased the level of discounting required in relation to the pricing of 
pharmaceuticals and these efforts could continue as countries attempt to manage healthcare expenditures, especially in light of the 
severe fiscal and debt crises experienced by many countries in the EU. The downward pressure on health care costs in general, 
particularly prescription products, has become intense. 

As a result, increasingly high barriers are being erected to the entry of new products. Political, economic, and regulatory 

developments may further complicate pricing negotiations, and pricing negotiations may continue after reimbursement has been 
obtained. Reference pricing used by various EU Member States, and parallel trade (arbitrage between low-priced and high-priced 
Member States), can further reduce prices. Special pricing and reimbursement rules may apply to orphan drugs. Inclusion of orphan
drugs in reimbursement systems tend to focus on the medical usefulness, need, quality and economic benefits to patients and the
healthcare system as for any drug. Acceptance of any medicinal product for reimbursement may come with cost, use and often volume 
restrictions, which again can vary by country. In addition, results-based rules of reimbursement may apply. There can be no assurance
that any country that has price controls or reimbursement limitations for pharmaceutical products will allow favorable reimbursement 
and pricing arrangements for any of our products, if approved in those countries.

50

Healthcare Law and Regulation

Healthcare providers and third-party payors play a primary role in the recommendation and prescription of pharmaceutical
products that are granted marketing approval. Arrangements with providers, consultants, third-party payors, and customers are subject 
to broadly applicable fraud and abuse, anti-kickback, false claims laws, reporting of payments to physicians and teaching physicians
and patient privacy laws and regulations and other healthcare laws and regulations that may constrain our business and/or financial
arrangements. Restrictions under applicable federal and state healthcare laws and regulations, include the following: 

•

•

•

•

•

•

•

•

•

•

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

the federal civil and criminal false claims laws, including the civil U.S. False Claims Act, and civil monetary penalties
laws, which prohibit individuals or entities from, among other things, knowingly presenting, or causing to be presented, to 
the federal government, claims for payment that are false, fictitious, or fraudulent or knowingly making, using, or causing
to be made or used a false record or statement to avoid, decrease, or conceal an obligation to pay money to the federal 
government. In addition, the government may assert that a claim including items and services resulting from a violation of 
the U.S. federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the U.S. False Claims Act; 

the federal false statements statute prohibits knowingly and willfully falsifying, concealing, or covering up a material fact 
or making any materially false statement in connection with the delivery of or payment for healthcare benefits, items, or 
services; similar to the federal Anti-Kickback Statute, a person or entity does not need to have actual knowledge of the 
statute or specific intent to violate it in order to have committed a violation; 

the anti-inducement law, which prohibits, among other things, the offering or giving of remuneration, which includes, 
without limitation, any transfer of items or services for free or for less than fair market value (with limited exceptions), to 
a Medicare or Medicaid beneficiary that the person knows or should know is likely to influence the beneficiary’s selection 
of a particular supplier of items or services reimbursable by a federal or state governmental program;

the federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, as amended by the Health 
Information Technology for Economic and Clinical Health Act of 2009, or HITECH, and their respective implementing
regulations, collectively HIPAA, which imposes criminal and civil liability for knowingly and willfully executing, or 
attempting to execute, a scheme to defraud any healthcare benefit program (including private payors) or obtain, by means
of false or fraudulent pretenses, representations, or promises, any of the money or property owned by, or under the
custody or control of, any healthcare benefit program, regardless of the payor (e.g., public or private) and knowingly and 
willfully falsifying, concealing or covering up by any trick or device a material fact or making any materially false
statements in connection with the delivery of, or payment for, healthcare benefits, items or services; 

HIPAA, which impose obligations with respect to safeguarding the privacy, security, and transmission of individually 
identifiable information that constitutes protected health information, including mandatory contractual terms and 
restrictions on the use and/or disclosure of such information without proper authorization; 

the federal transparency requirements known as the federal Physician Payments Sunshine Act, under the ACA, which 
requires certain manufacturers of drugs, devices, biologics and medical supplies to report annually to the Centers for 
Medicare & Medicaid Services, or CMS, within the U.S. Department of Health and Human Services, or HHS, information 
related to payments and other transfers of value made by that entity to physicians (currently defined to include doctors, 
dentists, optometrists, podiatrists and chiropractors) and teaching hospitals, and requires certain manufacturers and 
applicable group purchasing organizations to report ownership and investment interests held by physicians or their 
immediate family members, effective January 1, 2022, these reporting obligations will extend to include transfers of value 
made to certain non-physician providers such as physician assistants and nurse practitioners;

federal government price reporting laws, which require us to calculate and report complex pricing metrics in an accurate
and timely manner to government programs; 

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

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

51

•

analogous laws and regulations in other national jurisdictions and states, such as state anti-kickback and false claims laws, 
which may apply to healthcare items or services that are reimbursed by non-governmental third-party payors, including 
private insurers. 

Some state and other laws require pharmaceutical companies to comply with the pharmaceutical industry’s voluntary 

compliance guidelines and the relevant compliance guidance promulgated by the federal government in addition to requiring 
pharmaceutical manufacturers to report information related to payments to physicians and other health care providers or marketing
expenditures. State and other laws also govern the privacy and security of health information in some circumstances, many of which 
differ from each other in significant ways and often are not preempted by HIPAA, thus complicating compliance efforts. For example, 
in California, the California Consumer Protection Act, or CCPA, which went into effect on January 1, 2020, establishes a new privacy 
framework for covered businesses by creating an expanded definition of personal information, establishing new data privacy rights for 
consumers in the State of California, imposing special rules on the collection of consumer data from minors, and creating a new and 
potentially severe statutory damages framework for violations of the CCPA and for businesses that fail to implement reasonable 
security procedures and practices to prevent data breaches. While clinical trial data and information governed by HIPAA are currently 
exempt from the current version of the CCPA, other personal information may be applicable and possible changes to the CCPA may 
broaden its scope. In addition, a new California ballot initiative, the California Privacy Rights Act, or CPRA, was passed in November 
2020. Effective starting on January 1, 2023, the CPRA imposes additional obligations on companies covered by the legislation and 
will significantly modify the CCPA, including by expanding consumers’ rights with respect to certain sensitive personal information. 
Further data privacy and security laws and regulations in foreign jurisdictions that may be more stringent than those in the U.S. (such 
as the European Union, which adopted the GDPR, which became effective in May 2018). Analogous state laws may additionally
govern the privacy and security of health information in certain circumstances, many of which differ from each other in significant 
ways and may not have the same effect.  

Healthcare Reform

A primary trend in the U.S. healthcare industry and elsewhere is cost containment. There have been a number of federal and 
state proposals during the last few years regarding the pricing of pharmaceutical and biopharmaceutical products, limiting coverage 
and reimbursement for drugs and other medical products, government control and other changes to the healthcare system in the United 
States. 

By way of example, the United States and state governments continue to propose and pass legislation designed to reduce the

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

•

•

•

•

•

•

•

an annual, nondeductible fee on any entity that manufactures or imports specified branded prescription drugs and biologic 
products, apportioned among these entities according to their market share in certain government healthcare programs, 
although this fee would not apply to sales of certain products approved exclusively for orphan indications; 

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

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

addressed a new methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are 
calculated for products that are inhaled, infused, instilled, implanted or injected; 

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

established the Medicare Part D coverage gap discount program by requiring manufacturers to provide a 70% point-of-
sale-discount off the negotiated price of applicable products to eligible beneficiaries during their coverage gap period as a 
condition for the manufacturers’ outpatient products to be covered under Medicare Part D, increased pursuant to the 
Bipartisan Budget Act of 2018 which became effective as of 2019; 

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

52

•

established the Center for Medicare and Medicaid Innovation within CMS to test innovative payment and service delivery
models to lower Medicare and Medicaid spending, potentially including prescription product spending.

Other legislative changes have been proposed and adopted in the United States since the ACA was enacted. For example, in
August 2011, the Budget Control Act of 2011, among other things, created measures for spending reductions by Congress. A Joint 
Select Committee on Deficit Reduction, tasked with recommending a targeted deficit reduction of at least $1.2 trillion for the years
2012 through 2021, was unable to reach required goals, thereby triggering the legislation’s automatic reduction to several government 
programs. This includes aggregate reductions of Medicare payments to providers of up to 2% per fiscal year. These reductions went 
into effect on April 1, 2013 and, due to subsequent legislative amendments to the statute, will remain in effect through 2030, with the
exception of a temporary suspension from May 1, 2020 through March 31, 2022 due to the COVID-19 pandemic. Following the 
temporary suspension, a 1% payment reduction will occur beginning April 1, 2022 through June 30, 2022, and the 2% payment 
reduction will resume on July 1, 2022. In January 2013, President Obama signed into law the American Taxpayer Relief Act of 2012, 
which, among other things, further reduced Medicare payments to several providers, including hospitals, imaging centers, and cancer 
treatment centers, and increased the statute of limitations period for the government to recover overpayments to providers from three 
to five years. 

Since its enactment, there have been numerous judicial, administrative, executive, and legislative challenges to certain aspects of 

the ACA, and we expect there will be additional challenges and amendments to the ACA in the future. On June 17, 2021, the U.S.
Supreme Court dismissed the most recent judicial challenge to the ACA brought by several states without specifically ruling on the 
constitutionality of the ACA. Prior to the Supreme Court’s decision, President Biden issued an executive order to initiate a special
enrollment period from February 15, 2021 through August 15, 2021 for purposes of obtaining health insurance coverage through the 
ACA marketplace. The executive order also instructed certain governmental agencies to review and reconsider their existing policies
and rules that limit access to healthcare, including among others, reexamining Medicaid demonstration projects and waiver programs
that include work requirements, and policies that create unnecessary barriers to obtaining access to health insurance coverage through 
Medicaid or the ACA. It is unclear how other healthcare reform measures of the Biden administration or other efforts, if any, to
challenge, repeal or replace the ACA will impact our business. 

At the federal level, President Biden signed an Executive Order on July 9, 2021 affirming the administration’s policy to (i) 
support legislative reforms that would lower the prices of prescription drug and biologics, including by allowing Medicare to negotiate
drug prices, by imposing inflation caps, and, by supporting the development and market entry of lower-cost generic drugs and 
biosimilars; and (ii) support the enactment of a public health insurance option. Among other things, the Executive Order also directs 
HHS to provide a report on actions to combat excessive pricing of prescription drugs, enhance the domestic drug supply chain, reduce
the price that the Federal government pays for drugs, and address price gouging in the industry; and directs the FDA to work with 
states and Indian Tribes that propose to develop section 804 Importation Programs in accordance with the Medicare Prescription Drug, 
Improvement, and Modernization Act of 2003, and the FDA’s implementing regulations. FDA released such implementing regulations 
on September 24, 2020, which went into effect on November 30, 2020, providing guidance for states to build and submit importation 
plans for drugs from Canada. On September 25, 2020, CMS stated drugs imported by states under this rule will not be eligible for 
federal rebates under Section 1927 of the Social Security Act and manufacturers would not report these drugs for “best price” or 
Average Manufacturer Price purposes. Since these drugs are not considered covered outpatient drugs, CMS further stated it will not 
publish a National Average Drug Acquisition Cost for these drugs. If implemented, importation of drugs from Canada may materially 
and adversely affect the price we receive for any of our product candidates. Further, on November 20, 2020 CMS issued an Interim 
Final Rule implementing the Most Favored Nation, or MFN, Model under which Medicare Part B reimbursement rates would have
been be calculated for certain drugs and biologicals based on the lowest price drug manufacturers receive in Organization for 
Economic Cooperation and Development countries with a similar gross domestic product per capita.  However, on December 29, 2021 
CMS rescinded the Most Favored Nations rule. Additionally, on November 30, 2020, HHS published a regulation removing safe
harbor protection for price reductions from pharmaceutical manufacturers to plan sponsors under Part D, either directly or through 
pharmacy benefit managers, unless the price reduction is required by law. The rule also creates a new safe harbor for price reductions
reflected at the point-of-sale, as well as a safe harbor for certain fixed fee arrangements between pharmacy benefit managers and 
manufacturers. Pursuant to court order, the removal and addition of the aforementioned safe harbors were delayed and recent 
legislation imposed a moratorium on implementation of the rule until January 1, 2026. Further, CMS recently finalized regulations
that give states greater flexibility in setting benchmarks for insurers in the individual and small group marketplaces, which may have
the effect of relaxing the essential health benefits required under the ACA for plans sold through such marketplaces. For example, in
May 2019, CMS issued a final rule to allow Medicare Advantage Plans the option of using step therapy, a type of prior authorization, 
for Part B drugs beginning January 1, 2020. It is unclear what type of impact, if any, efforts such as this will have on our business.

There has also been heightened governmental scrutiny over the manner in which manufacturers set prices for their marketed 

products, which has resulted in several recent Congressional inquiries and proposed bills designed to, among other things, bring more 
transparency to product pricing, review the relationship between pricing and manufacturer patient programs, and reform government 
program reimbursement methodologies for pharmaceutical products. Individual states in the United States have also become 

53

increasingly active in enacting legislation and implementing regulations designed to control pharmaceutical product pricing, including 
price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and 
transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing. Beyond 
challenges to the ACA, other legislative measures have also been enacted that may impose additional pricing and product 
development pressures on our business. For example, on May 30, 2018, the Right to Try Act, was signed into law. The law, among
other things, provides a federal framework for certain patients to access certain investigational new drug products that have completed 
a Phase 1 clinical trial and that are undergoing investigation for FDA approval. Under certain circumstances, eligible patients can seek 
treatment without enrolling in clinical trials and without obtaining FDA permission under the FDA expanded access program. There is
no obligation for a drug manufacturer to make its drug products available to eligible patients as a result of the Right to Try Act, but the
manufacturer must develop an internal policy and respond to patient requests according to that policy. We expect that additional 
foreign, federal and state healthcare reform measures will be adopted in the future, any of which could limit the amounts that federal 
and state governments will pay for healthcare products and services, which could result in limited coverage and reimbursement and 
reduced demand for our products, once approved, or additional pricing pressures.

At the state level, individual states are increasingly aggressive in passing legislation and implementing regulations designed to 
control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on
certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage
importation from other countries and bulk purchasing. In addition, regional health care authorities and individual hospitals are 
increasingly using bidding procedures to determine what pharmaceutical products and which suppliers will be included in their 
prescription drug and other health care programs. These measures could reduce the ultimate demand for our products, once approved, 
or put pressure on our product pricing. We expect that additional state and federal healthcare reform measures will be adopted in the 
future, any of which could limit the amounts that federal and state governments will pay for healthcare products and services, which 
could result in reduced demand for our product candidates or additional pricing pressures.

There have been, and likely will continue to be, legislative and regulatory proposals at the national level in the U.S. and other 

jurisdictions globally, as well as at some regional, state and/or local levels within the U.S. or other jurisdictions, directed at broadening 
the availability of healthcare and containing or lowering the cost of healthcare. Such reforms could have an adverse effect on
anticipated revenues from product candidates that we may successfully develop and for which we may obtain marketing approval and 
may affect our overall financial condition and ability to develop product candidates.

Additional Regulation

In addition to the foregoing, state, and federal laws regarding environmental protection and hazardous substances, including the 
Occupational Safety and Health Act, the Resource Conservation and Recovery Act, and the Toxic Substances Control Act, affect our 
business. These and other laws govern the use, handling, and disposal of various biologic, chemical, and radioactive substances used 
in, and wastes generated by, operations. If our operations result in contamination of the environment or expose individuals to 
hazardous substances, we could be liable for damages and governmental fines. Equivalent laws have been adopted in third countries
that impose similar obligations.

Human Capital

As of December 31, 2021, we had 473 full-time employees. No employees were represented by labor unions or subject to 

collective bargaining agreements. The majority of employees were based in Cambridge, Massachusetts with additional employees
based in Framingham, Massachusetts, Mission Bay, California, Switzerland and the United Kingdom. 169 employees held Ph.D., 
Pharm. D., or M.D. degrees. 399 engaged primarily in research and development or technical operations, and 74 engaged in business
development, finance, information systems, facilities, human resources, legal functions, or administrative support. We consider our 
employee relations to be good.

We are dedicated to conducting business with the highest standards of corporate responsibility. Our goal is to build a culture of 
diverse and passionate people striving to positively impact patients, our communities, and broader society. Our human capital resource
priorities include attracting, recruiting, retaining, incentivizing and integrating our existing and new employees. We believe that a 
diverse, equitable, and inclusive workplace allows our company to best fulfill our mission. We are committed to continuing our efforts 
to increase diversity throughout our company and foster an inclusive work environment that supports our employees and the 
communities we serve. We have established a Diversity, Equity and Inclusion Committee that is working to amplify this focus at the 
company. In all the countries in which we operate, it is our policy to fully comply with all applicable laws regarding discrimination in
the workplace. We are committed to recruiting the best people for the job regardless of gender, race, ethnicity, age, disability, sexual
orientation, gender identity, cultural background, or religious belief. 

54

The principal purposes of our comprehensive equity and cash compensation and benefits programs are to attract, motivate, 
retain, and reward new and existing employees. We do this by using a mix of compensation elements that balance achievement of our 
short-term goals with our long-term performance. In addition, employees are eligible to participate in our standard employee benefit 
plans, such as our retirement, health and welfare benefits plans, including medical, dental, and life and disability insurance plans. We
also offer our employees the opportunity to participate in a tax-qualified retirement plan, or the 401(k) Plan, and have the ability to 
make matching contributions under the 401(k) Plan, which is competitive with other companies in our industry. 

We consider our human capital resources strategy to be comprehensive and is built around our core way of working: 

collaborative, undaunted, entrepreneurial, and results-oriented. We foster a strong relationship with and among our employees with 
ongoing efforts such as employee surveys, training and development programs, and other programs, including skill development 
courses, manager training, leadership development opportunities, tuition reimbursement and robust online course training libraries for 
reference on a myriad of development topics. We also support cross-functional career development pathways, in addition to traditional 
promotions within functions in the organization. We plan to continue to evolve and add to our suite of human capital resources as we 
grow.

Information Available on the Internet

Investors and others should note that we announce material information to our investors using our investor relations website 
(https://crisprtx.gcs-web.com/), SEC filings, press releases, public conference calls and webcasts. We use these channels as well as
social media to communicate with the public about our company, our business, our product candidates and other matters. It is possible
that the information we post on social media could be deemed to be material information. Therefore, we encourage investors, the 
media, and others interested in our company to review the information we post on the social media channels listed on our investor 
relations website. Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, including
exhibits, proxy and information statements and amendments to those reports filed or furnished pursuant to Sections 13(a) and 15(d) of 
the Exchange Act are available on our website free of charge as soon as reasonably practicable after we electronically file such
material with, or furnish it to, the SEC at its website (https://www.sec.gov).

55

Item 1A. Risk Factors. 

This report contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially 

from those discussed in this report. Factors that could cause or contribute to these differences include, but are not limited to, those 
discussed below and elsewhere in this report and in any documents incorporated in this report by reference.

You should carefully consider the following risk factors, together with all other information in this report, including our 
financial statements and notes thereto, and in our other filings with the Securities and Exchange Commission. If any of the following 
risks, or other risks not presently known to us or that we currently believe to not be significant, develop into actual events, then our 
business, financial condition, results of operations or prospects could be materially adversely affected. If that happens, the market 
price of our common shares could decline, and shareholders may lose all or part of their investment.

Risks Related to Our Financial Position and Need for Additional Capital 

We Have Incurred Significant Operating Losses Since Our Inception And Anticipate That We Will Incur Continued Losses For 

The Foreseeable Future.

We have funded our operations through public and private offerings of our equity securities, private placements of our preferred 
shares, convertible loans and collaboration agreements with strategic partners. While we were profitable for the years ended December 
31, 2019 and December 31, 2021 due to upfront payments associated with our collaboration with Vertex, we do not expect to be 
profitable in future years. Our prior losses, combined with expected future losses, have had and will continue to have an adverse effect 
on our shareholders’ deficit and working capital. We anticipate that our expenses will increase substantially if and as we: 

•

•

•

•

•

•

•

•

•

•

•

•

•

continue our clinical trials for our various programs;

continue our current research programs and our preclinical and clinical development of product candidates;

seek to identify additional research programs and additional product candidates; 

conduct IND supporting preclinical studies and initiate clinical trials for our product candidates; 

initiate preclinical studies and clinical trials for any other product candidates we identify and choose to develop; 

expand, maintain, enforce and/or defend our intellectual property estate; 

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

further develop our gene-editing technology; 

hire additional clinical, quality control and scientific personnel; 

establish, expand or contract for manufacturing capabilities;

add operational, financial and management information systems and personnel, including personnel to support our product 
candidate development; 

acquire or in-license other technologies; and,

ultimately establish a sales, marketing, and distribution infrastructure to commercialize any products for which we may 
obtain marketing approval. 

As a result, we expect to continue to incur significant and increasing operating losses for the foreseeable future. Because of the 

numerous risks and uncertainties associated with developing gene-editing product candidates, we are unable to predict the extent of 
any future losses or when we will become profitable, if at all. Even if we do become profitable, we may not be able to sustain or 
increase our profitability on a quarterly or annual basis. 

56

We Will Need To Raise Substantial Additional Funding, Which Will Dilute Our Shareholders. If We Are Unable To Raise 
Capital When Needed, We Would Be Forced To Delay, Reduce Or Eliminate Some Of Our Product Development Programs Or 
Commercialization Efforts.

The development of gene-editing product candidates is capital intensive. We expect our expenses to increase in connection with 

our ongoing activities, particularly as we continue the research and development of, initiate preclinical studies and clinical trials for 
and seek marketing approval for our product candidates. In addition, if we obtain marketing approval for any of our product 
candidates, we expect to incur significant commercialization expenses related to product sales, marketing, manufacturing and 
distribution to the extent that such sales, marketing, manufacturing and distribution are not the responsibility of Bayer, Vertex or other 
future collaborators. We may also need to raise additional funds sooner if we choose to pursue additional indications or geographies 
for our product candidates or otherwise expand more rapidly than we presently anticipate. Accordingly, we will need to obtain 
substantial additional funding in connection with our continuing operations. If we are unable to raise capital when needed or on
attractive terms, we would be forced to delay, reduce or eliminate certain of our research and development programs or future
commercialization efforts. 

As of December 31, 2021 and 2020, we had cash, cash equivalents and marketable securities of approximately $2,379.1 million 

and $1,690.3 million, respectively. With our cash, cash equivalents and marketable securities on hand as of December 31, 2021, we 
expect cash, cash equivalents and marketable securities to be sufficient to fund our current operating plan through at least the next 24 
months.

Our future capital requirements will depend on, and could increase significantly as a result of, many factors, including: 

•

•

•

•

•

•

•

•

•

•

•

•

•

•

the scope, progress, results and costs of clinical trials, drug discovery, preclinical development, and laboratory testing for 
our wholly owned and partnered product candidates; 

the scope, prioritization and number of our research and development programs; 

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

the costs of establishing and maintaining a supply chain for the development and manufacture of our product candidates; 

the success of our collaborations with Vertex and ViaCyte;

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

the achievement of milestones or occurrence of other developments that trigger payments under any additional 
collaboration agreements we obtain; 

the extent to which we are obligated to reimburse, or entitled to reimbursement of, clinical trial costs under future 
collaboration agreements, if any; 

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

the costs of fulfilling our obligations under the Consent to Assignments, Licensing and Common Ownership and 
Invention Management Agreement to reimburse other parties for costs incurred in connection with the prosecution and 
maintenance of associated patent rights; 

the extent to which we acquire or in-license other product candidates and technologies; 

the costs of establishing or contracting for manufacturing capabilities if we obtain regulatory approvals to manufacture our 
product candidates;

the costs of establishing or contracting for sales and marketing capabilities if we obtain regulatory approvals to market our 
product candidates; and 

our ability to establish and maintain healthcare coverage and adequate reimbursement. 

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. We cannot guarantee that future financing will be available in sufficient 
amounts or on terms acceptable to us, if at all. For example, the trading prices for our common shares and other biopharmaceutical 
companies have been highly volatile as a result of the coronavirus pandemic. Moreover, the terms of any financing may adversely 
affect the holdings or the rights of our shareholders and 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
would dilute all of our shareholders and the terms of these securities may include liquidation or other preferences that adversely affect 

57

your rights as a shareholder. The incurrence of indebtedness would 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 collaborators 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 candidate, 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. 

We Have A Limited Operating History, Which May Make It Difficult To Evaluate Our Technology And Product Development 

Capabilities And Predict Our Future Performance.

We were formed in October 2013, have no products approved for commercial sale and have not generated any revenue from
product sales. Our ability to generate product revenue or profits, which we do not expect will occur for several years, if ever, will 
depend heavily on the successful development and eventual commercialization of our product candidates, which may never occur. We 
may never be able to develop or commercialize a marketable product. 

We are early in our overall development efforts and the first clinical trial for any of our product candidates was initiated at the 
end of 2018. Our programs require preclinical and clinical development; regulatory and marketing approval in multiple jurisdictions;
obtaining manufacturing supply, capacity, and expertise; building of a commercial organization; substantial investment and significant 
marketing efforts before we generate any revenue from product sales. Our product candidates must be approved for marketing by the 
FDA or certain other health regulatory agencies, including the EMA, before we may commercialize any product.

Our limited operating history, particularly in light of the rapidly evolving gene-editing field, may make it difficult to evaluate 

our technology and industry and predict our future performance. Our short history as an operating company makes any assessment of 
our future success or viability subject to significant uncertainty. We will encounter risks and difficulties frequently experienced by 
early stage companies in rapidly evolving fields. If we do not address these risks successfully, our business will suffer. Similarly, we 
expect that our financial condition and operating results will fluctuate significantly from quarter to quarter and year to year due to a
variety of factors, many of which are beyond our control. As a result, our shareholders should not rely upon the results of any 
quarterly or annual period as an indicator of future operating performance.

In addition, as an early stage company, we have encountered unforeseen expenses, difficulties, complications, delays and other 

known and unknown circumstances. As we advance our product candidates, we will need to continue to transition from a company 
with a research focus to a company capable of supporting clinical development and if successful, commercial activities. We may not 
be successful in such a transition.

Our Ability To Use Tax Loss Carryforwards In Switzerland May Be Limited.

Under Swiss law, we are entitled to carry forward losses we incur for a period of seven years and we can offset future profits, if 
any, against such losses. Tax losses are only finally assessed by the tax authorities when offset with taxable profit (which will not be 
the case if we are loss making). If not used, these tax losses will expire seven years after the year in which they occurred. Due to our 
limited income, there is a high risk that the tax loss carry forwards will expire partly or entirely and as a result they would not be 
applied to reduce future cash tax payments.  

As of January 1, 2020, the Canton of Zug introduced its new law on the Swiss corporate tax reform. According to this new law, 

the ordinary effective corporate income tax rate amount was reduced to 11.91% (federal, cantonal and communal) in 2020 and was
subsequently reduced to 11.85% in 2021. 

58

Risks Related to Our Business, Technology and Industry 

We Are Early In Our Overall Development Efforts. It Will Be Many Years Before We Or Our Collaborators Commercialize A

Product Candidate, If Ever. If We Are Unable To Advance Our Product Candidates To Clinical Development, Obtain Regulatory
Approval And Ultimately Commercialize Our Product Candidates, Or Experience Significant Delays In Doing So, Our Business Will 
Be Materially Harmed. 

We are early in our overall development efforts and have focused our research and development efforts to date on

CRISPR/Cas9, gene-editing technology, identifying our initial targeted disease indications and our initial product candidates. Our 
future success depends heavily on the successful development of our CRISPR/Cas9 gene-editing product candidates. We have
invested substantially all of our efforts and financial resources in the identification and development of our current product candidates. 
Our ability to generate product revenue, which we do not expect will occur for several years, if ever, will depend heavily on the 
successful development and eventual commercialization of our product candidates, which may never occur. For example, our research
programs, including those subject to our collaboration agreements with Vertex and ViaCyte and option agreement with Bayer, may 
fail to identify potential product candidates for clinical development for a number of reasons or may fail to successfully advance any 
product candidates through clinical development. Our research methodology may be unsuccessful in identifying potential product 
candidates, or our potential product candidates may be shown to have harmful side effects or may have other characteristics that may 
make the product candidates impractical to manufacture, unmarketable, or unlikely to receive marketing approval. We currently
generate no revenue from sales of any product and we may never be able to develop or commercialize a marketable product.

We must file U.S. investigational new drug applications, or INDs, clinical trial applications, or CTAs, or their equivalents with

regulatory authorities to commence clinical trials. The filing of future CTAs or INDs for any other product candidate we develop is
subject to the identification and selection of one or more guide RNAs with acceptable efficiency, among other activities. In addition, 
commencing any of our clinical trials is also subject to acceptance by the European regulatory authorities, or its equivalent, of our 
CTAs, or the FDA of our INDs, and finalizing the trial design based on discussions with the applicable regulatory authorities. In the 
event that the European regulatory authorities, FDA or their equivalent requires us to complete additional preclinical studies or we are 
required to satisfy other requests, our clinical trials may be delayed. Even after we receive and incorporate guidance from these
regulatory authorities, they could disagree that we have satisfied their requirements to commence our clinical trial or change their 
position on the acceptability of our trial design or the clinical endpoints selected, which may require us to complete additional 
preclinical studies or clinical trials or impose stricter approval conditions than we currently expect. 

To become and remain profitable, we must develop and eventually commercialize product candidates with significant market 

potential, which will require us to be successful in a range of challenging activities. Our product candidates will require additional 
preclinical and clinical development; regulatory and marketing approval in multiple jurisdictions; obtaining manufacturing supply, 
capacity, and expertise; building of a commercial organization; substantial investment and significant marketing efforts before we 
generate any revenue from product sales. In addition, our product development programs must be approved for marketing by the FDA,
EMA or certain other health regulatory agencies, before we may commercialize our product candidates. We may never succeed in any
or all of these activities and, even if we do, we may never generate revenues that are significant or large enough to achieve 
profitability. If we do achieve profitability, we may not be able to sustain or increase profitability on a quarterly or annual basis. Our 
failure to become and remain profitable would decrease our value and could impair our ability to raise capital, maintain our research 
and development efforts, expand our business or continue our operations. A decline in our value also could cause shareholders to lose
all or part of their investment.

The success of our product candidates will depend on several factors, including the following: 

•

•

•

•

•

successful completion of clinical trials and preclinical studies;

sufficiency of our financial and other resources to complete the necessary clinical trials and preclinical studies; 

ability to develop safe and effective delivery mechanisms for our in vivo therapeutic programs; 

ability to identify optimal RNA sequences to guide genomic editing;

entry into collaborations to further the development of our product candidates; 

59

•

•

•

•

•

•

•

•

•

•

•

•

•

•

approval of CTAs or INDs for our product candidates to commence clinical trials; 

successful enrollment in, and completion of, clinical trials and preclinical studies;

successful data from our clinical program that supports an acceptable risk-benefit profile of our product candidates for the
intended patient populations;

receipt of regulatory and marketing approvals from applicable regulatory authorities;

establishment of arrangements with third-party manufacturers for clinical supply and commercial manufacturing and,
where applicable, commercial manufacturing capabilities; 

successful development of our internal manufacturing processes and transfer to larger-scale facilities operated by either a 
contract manufacturing organization or by us; 

establishment and maintenance of patent and trade secret protection or regulatory exclusivity for our product candidates; 

commercial launch of our product candidates, if and when approved, whether alone or in collaboration with others;

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

effective competition with other therapies and treatment options; 

establishment and maintenance of healthcare coverage and adequate reimbursement; 

enforcement and defense of intellectual property rights and claims; 

maintenance of a continued acceptable safety profile of the product candidates following approval; and 

achieving desirable medicinal properties for the intended indications. 

Additionally, because our technology involves gene editing across multiple cell and tissue types, we are subject to many of the 

challenges and risks that gene therapies face, including:

•

•

•

•

regulatory requirements governing gene and cell therapy products have changed frequently and may continue to change in 
the future; to date a limited number of products that involve the genetic modification of patient cells have been approved 
in the United States and the EU; 

the administration processes or related procedures for our product candidates (e.g., treatment with myeloablative busulfan 
conditioning prior to receiving CTX001 or undergoing a lymphodepletion regimen prior to receiving our immunotherapy
product candidates);

improper insertion of a gene sequence into a patient’s chromosome could lead to lymphoma, leukemia or other cancers, or 
other aberrantly functioning cells; and 

the FDA recommends a follow-up observation period of 15 years or longer for all patients who receive treatment using
gene therapies, and we may need to adopt and support, and have adopted and are supporting for certain of our trials, such 
an observation period for our product candidates. 

If we do not succeed in one or more of these factors in a timely manner or at all, we could experience significant delays or an

inability to successfully commercialize our product candidates, which would materially harm our business. If we do not receive 
regulatory approvals for our product candidates, we may not be able to continue our operations. 

60

Our CRISPR/Cas9 Gene-Editing Product Candidates Are Based On A New Gene-Editing Technology, Which Makes It Difficult 
To Predict The Time And Cost Of Development And Of Subsequently Obtaining Regulatory Approval, If At All. There Have Only Been 
A Limited Number Of Clinical Trials Of Product Candidates Based On Gene-Editing Technology And No Gene-Editing Products
Have Been Approved In The United States Or In The EU. 

CRISPR/Cas9 gene-editing technology is relatively new, and no products based on CRISPR/Cas9 or other similar gene-editing

technologies have been approved in the United States or the EU and only a limited number of clinical trials of product candidates
based on gene-editing technologies have been commenced. As such it is difficult to accurately predict the developmental challenges
we may incur for our product candidates as they proceed through product discovery or identification, preclinical studies and clinical
trials. For example, because we have only limited data from clinical trials in CTX001 and CTX110, we have not yet been able to fully 
assess safety in humans. In addition, because we have only recently commenced clinical trials for certain of our other product 
candidates, we have not yet been able to assess safety in humans. There may be long-term effects from treatment with any product 
candidates that we develop that we cannot predict at this time. Any product candidates we may develop will act at the level of DNA,
and, because animal DNA differs from human DNA, testing of our product candidates in animal models may not be predictive of the 
results we observe in human clinical trials of our product candidates for either safety or efficacy. Also, animal models may not exist 
for some of the diseases we choose to pursue in our programs. As a result of these factors, it is more difficult for us to predict the time 
and cost of product candidate development, and we cannot predict whether the application of our gene-editing technology, or any
similar or competitive gene-editing technologies, will result in the identification, development, and regulatory approval of any
products. There can be no assurance that any development problems we experience in the future related to our gene-editing technology 
or any of our research programs will not cause significant delays or unanticipated costs, or that such development problems can be 
solved. Any of these factors may prevent us from completing our preclinical studies or any clinical trials that we may initiate or 
commercializing any product candidates we may develop on a timely or profitable basis, if at all. 

The clinical trial requirements of the FDA, the EMA and other regulatory authorities 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 product candidate. No products based on gene-editing technologies have been approved by regulators. As a result, 
the regulatory approval process for product candidates such as ours is uncertain and may be more expensive and take longer than the 
approval process for product candidates based on other, better known or more extensively studied technologies. It is difficult to 
determine how long it will take or how much it will cost to obtain regulatory approvals for our product candidates in either the United 
States or the EU or how long it will take to commercialize our product candidates. Delay or failure to obtain, or unexpected costs in 
obtaining, the regulatory approval necessary to bring a potential product candidate to market could decrease our ability to generate 
sufficient product revenue, and our business, financial condition, results of operations and prospects may be harmed. 

The FDA, The NIH And The EMA Have Demonstrated Caution In Their Regulation Of Gene Therapy Treatments, And Ethical 

And Legal Concerns About Gene Therapy And Genetic Testing May Result In Additional Regulations Or Restrictions On The
Development And Commercialization Of Our Product Candidates, Which May Be Difficult To Predict.

The FDA, NIH and the EMA have each expressed interest in further regulating biotechnology, including gene therapy and 

genetic testing. For example, the EMA advocates a risk-based approach to the development of a gene therapy product. Agencies at 
both the federal and state level in the United States, as well as the U.S. congressional committees and other governments or governing
agencies, have also expressed interest in further regulating the biotechnology industry. Such action may delay or prevent 
commercialization of some or all of our product candidates. 

Regulatory requirements in the United States and in other jurisdictions governing gene therapy products have changed 

frequently and may continue to change in the future. The FDA has issued several guidance documents on gene therapy products. The 
FDA established the Office of Tissues and Advanced Therapies within its Center for Biologics Evaluation and Research to consolidate
the review of gene therapy and related products, and established the Cellular, Tissue and Gene Therapies Advisory Committee to 
advise this review. In addition to the government regulators, the IBC and IRB of each institution at which we conduct clinical trials of 
our product candidates, or a central IRB if appropriate, would need to review the proposed clinical trial to assess the safety of the trial.
In addition, adverse developments in clinical trials of gene therapy product candidates conducted by others may cause the FDA or 
other oversight bodies to change the requirements for approval of any of our product candidates. Similarly, the EMA governs the
development of gene therapies in the EU and may issue new guidelines concerning the development and marketing authorization for 
gene therapy products and require that we comply with these new guidelines. These regulatory review agencies and committees and 
the new requirements or guidelines they promulgate may lengthen the regulatory review process, require us to perform additional 
studies or trials, increase our development costs, lead to changes in regulatory positions and interpretations, delay or prevent approval 
and commercialization of our product candidates or lead to significant post-approval limitations or restrictions. As we advance our 
product candidates, we will be required to consult with these regulatory agencies and committees and comply with applicable 
requirements and guidelines. If we fail to do so, we may be required to delay or discontinue development of such product candidates.
These additional processes may result in a review and approval process that is longer than we otherwise would have expected. Delays

61

as a result of an increased or lengthier regulatory approval process or further restrictions on the development of our product candidates
can be costly and could negatively impact our or our collaborators’ ability to complete clinical trials and commercialize our current 
and future product candidates in a timely manner, if at all. 

If Any Of The Product Candidates We May Develop Or Administration Processes We Rely On Causes Undesirable Side Effects, 

It Could Delay Or Prevent Their Regulatory Approval, Limit The Commercial Potential Or Result In Significant Negative
Consequences Following Any Potential Marketing Approval.

Product candidates we may develop may be associated with undesirable or unacceptable side effects, unexpected characteristics

or other serious adverse events, including death or off-target cuts of DNA, or the introduction of cuts in DNA at locations other than
the target sequence. These off-target cuts could lead to disruption of a gene or a genetic regulatory sequence at an unintended site in
the DNA, or, in those instances where we also provide a segment of DNA to serve as a repair template, it is possible that following
off-target cut events, DNA from such repair template could be integrated into the genome at an unintended site, potentially disrupting 
another important gene or genomic element.

There also is the potential risk of delayed adverse events following exposure to gene-editing therapy due to persistent biologic 
activity of the genetic material or other components of products used to carry the genetic material. Possible adverse side effects that 
could occur with treatment with gene-editing products include an immunologic reaction after administration which could substantially
limit the effectiveness of the treatment. 

Immunotherapy, and its method of action of harnessing the body’s immune system, is powerful and could lead to serious side
effects that we only discover in clinical trials. Unforeseen side effects could arise either during clinical development or, if such side
effects are rare, after our product candidates have been approved by regulatory authorities and the approved product has been
marketed, resulting in the exposure of additional patients. If our CRISPR/Cas9 gene-editing technology demonstrates a similar effect, 
we may decide or be required to halt or delay preclinical development or clinical development of our product candidates.

In addition to serious adverse events or side effects caused by any product candidate we may develop, the administration process

or related procedures also can cause undesirable side effects. Patients who enroll in our CTX001 clinical trials have their own 
CRISPR/Cas9 edited-hematopoietic stem and progenitor cells, CTX001, infused back into the patient as part of a stem cell transplant, 
a process which involves, among other things, a patient being treated with myeloablative busulfan conditioning. Patients undergoing
stem cell transplants may also encounter side effects (ranging from mild to severe) that are unrelated to the administration of CTX001. 
Patients who enroll in our immunotherapy trials undergo a lymphodepletion regimen, which generally includes fludarabine and 
cyclophosphamide that may cause serious adverse events. Because these regimens will cause a transient and sometimes prolonged 
immune suppression, patients will have an increased risk of certain infections that may be unable to be cleared by the patient and 
could ultimately lead to death. Any side effects may not be appropriately recognized or managed by the treating medical staff. We or 
our collaborators expect to have to educate medical personnel using any product candidates we may develop to understand the side
effect profiles for our clinical trials and upon any commercialization of such product candidates. Inadequate recognition or 
management of the potential side effects of such product candidates could result in patient injury or death.

If any undesirable or unacceptable side effects, unexpected characteristics or other serious adverse events occur, our clinical 

trials or commercial distribution of any product candidates or products we develop alone or with collaborators could be suspended or 
terminated, and our business and reputation could suffer substantial harm.  

If in the future we are unable to demonstrate that such adverse events were caused by factors other than our product candidate,
the FDA, EMA or other comparable health regulatory authorities could order us to cease further clinical studies of, or deny approval 
of, any product candidates we are able to develop 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 product candidate we 
may develop, 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 identify and develop 
product candidates, and may harm our business, financial condition, result of operations and prospects significantly. 

Additionally, if we successfully develop a product candidate and it receives marketing approval, the FDA could require us to 

adopt a Risk Evaluation and Mitigation Strategy, or REMS, to ensure that the benefits of treatment with such product candidate 
outweighs the risks for each potential patient, which may include, among other things, a medication guide outlining the risks of the
product for distribution to patients, a communication plan to health care practitioners, extensive patient monitoring, or distribution
systems and processes that are highly controlled, restrictive, and more costly than what is typical for the industry. Furthermore, if we 

62

or others later identify undesirable side effects caused by any product candidate that we develop, several potentially significant 
negative consequences could result, including:

•

•

•

•

•

regulatory authorities may revoke licenses or suspend, vary or withdraw approvals of such product candidate; 

regulatory authorities may require additional warnings on the label; 

we may be required to change the way a product candidate is administered or conduct additional clinical trials; 

we could be sued and held liable for harm caused to patients; and 

our reputation may suffer. 

Moreover, gene therapy product candidates investigated by other parties have resulted in serious adverse events, including
deaths, and it is possible that the FDA or other regulatory authorities could impose a clinical hold on clinical trials of our product 
candidates after becoming aware of adverse events with products or product candidates in the same class as our product candidates.

Any of these events could prevent us from achieving or maintaining market acceptance of our gene-editing technology and any 
product candidates we may identify and develop and could have a material adverse effect on our business, financial condition, results 
of operations and prospects. 

Our Engineered Allogeneic T cell Product Candidates Represent A Novel Approach To Cancer Treatment That Creates 

Significant Challenges For Us.

For our immuno-oncology programs, we are developing a pipeline of allogeneic T cell product candidates (which currently

includes CTX110, CTX120 and CTX130) that are engineered from healthy donor T cells to express chimeric antigen receptors, or 
CARs, and are intended for use in any patient with certain cancers. Unlike for autologous CAR-T therapies, for allogeneic CAR-T 
therapies, we are reliant on receiving healthy donor material to manufacture our product candidates. Healthy donor T cells vary in type 
and quality, and this variation makes producing standardized allogeneic CAR-T product candidates challenging and makes the
development and commercialization pathway of those product candidates uncertain. 

We have developed screening processes designed to enhance the quality and consistency of T cells used in the manufacture of 

our CAR-T cell product candidates, but our screening processes may fail to identify suitable donor material and we may discover 
failures with the material after production. We may also have to update our specifications for new risks that may emerge, such as to
screen for new viruses.

We have strict specifications for donor material, which include specifications required by regulatory authorities. If we are
unable to identify and obtain donor material that satisfy specifications, agree with regulatory authorities on appropriate specifications,
or address variability in donor T cells, there may be inconsistencies in the product candidates we produce or we may be unable to 
initiate or continue ongoing clinical trials on the timelines we expect, which could harm our reputation and adversely impact our 
business and prospects.

In addition, approved autologous CAR-T therapies and those under development have shown frequent rates of cytokine release 
syndrome, neurotoxicity, serious infections, prolonged cytopenia and hypogammaglobulinemia, and other serious adverse events that 
have resulted in patient deaths. We expect similar adverse events for our allogeneic CAR-T product candidates. Moreover, patients
eligible for allogeneic CAR-T cell therapies but ineligible for autologous CAR-T cell therapies due to aggressive cancer and inability 
to wait for autologous CAR-T cell therapies may be at greater risk for complications and death from therapy. Our allogeneic CAR-T 
cell product candidates may also cause unique adverse events related to the differences between the donor and patients, such as Graft 
versus Host Disease, or GvHD, or infusion reactions. GvHD results when allogeneic T cells start recognizing the patient’s normal 
tissue as foreign. 

We have designed our CRISPR/Cas9 gene-editing technology to eliminate the T-cell receptor from the healthy donor T cells to 
reduce the risk of GvHD from our product candidates, as well as to remove the class I major histocompatibility complex from the cell
surface in order to limit the patient’s immune system from attacking the allogeneic T cells and to improve the persistence of the CAR-
T cells. However, the gene-editing of our product candidates may not be successful in limiting the risk of GvHD or premature 
rejection by the patient. In addition, results of our immuno-oncology clinical trials could reveal a high and unacceptable severity and 
prevalence of side effects or unexpected characteristics.

If significant GvHD or other adverse events are observed with the administration of our product candidates, or if any of the
product candidates is viewed as less safe or effective than autologous therapies or other allogenic therapies, our ability to develop 
allogeneic therapies may be adversely affected.

63

If We Experience Delays Or Difficulties In The Enrollment Of Patients In Clinical Trials, Our Receipt Of Necessary Regulatory 

Approvals Could Be Delayed Or Prevented.

We or our collaborators may not be able to initiate or continue clinical trials for any product candidates we identify or develop if 

we are unable to locate and enroll a sufficient number of eligible patients to participate in these trials as required by the FDA or 
analogous regulatory authorities outside the United States, or as needed to provide appropriate statistical power for a given trial. 
Enrollment may be particularly challenging for any rare genetically defined diseases we may target in the future. In addition, if 
patients are unwilling to participate in our gene-editing trials because of negative publicity from adverse events related to the
biotechnology, gene therapy or gene-editing fields, competitive clinical trials for similar patient populations, clinical trials with
competing products, or for other reasons, the timeline for recruiting patients, conducting studies and obtaining regulatory approval of 
any product candidates we may develop may be delayed. Moreover, some of our competitors may have ongoing clinical trials for 
product candidates that would treat the same indications as any product candidates we may develop, and patients who would otherwise
be eligible for our clinical trials may instead enroll in clinical trials of our competitors’ product candidates. 

Patient enrollment is also affected by other factors, including: 

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

severity of the disease under investigation;

size of the patient population and process for identifying subjects; 

design of the trial protocol; 

availability of eligible prospective patients that are otherwise eligible patients for competitive clinical trials;

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

availability of genetic testing for potential patients; 

ability to obtain and maintain subject consent;

risk that enrolled subjects will drop out before completion of the trial; 

eligibility and exclusion criteria for the trial in question; 

perceived risks and benefits of the product candidate under trial; 

perceived risks and benefits of gene editing and cellular therapies as therapeutic approaches; 

efforts to facilitate timely enrollment in clinical trials; 

patient referral practices of physicians; 

ability to monitor patients adequately during and after treatment;

proximity and availability of clinical trial sites for prospective patients; and

the coronavirus pandemic. 

Enrollment delays in our clinical trials may result in increased development costs for any product candidates we may develop, 
which would cause our value to decline and limit our ability to obtain additional financing. If we or our collaborators 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, financial condition, results of operations, and 
prospects. 

Our Business May Be Adversely Affected By The Ongoing Coronavirus Pandemic, Including The Emergence of Additional 

Variants.

Our business could be adversely affected by health epidemics in regions where we have concentrations of clinical trial sites 
or other business activities and could cause significant disruption in the operations of third-party manufacturers and CROs upon whom 
we rely, as well as our ability to recruit patients for our clinical trials. For example, beginning in late 2019, the outbreak of coronavirus
has evolved into a global pandemic. As of late March 2020, the coronavirus had spread to most regions of the world, and the 
coronavirus pandemic has persisted as a result of the spread of additional variants of the virus leading to additional "waves" and 
resurgence of infections. Since March 2020, we have been evaluating the actual and potential business impacts related to the
coronavirus pandemic.

64

As a result of the coronavirus pandemic, we have experienced, and may further experience, disruptions, pauses and/or 

delays that have and could further adversely impact our business, operations, and/or associated timelines, including:

•

•

•

d

We are conducting a number of clinical trials for product candidates in the fields of severe hemoglobinopathies and 
immuno-oncology in geographies which are affected by the coronavirus pandemic. We believe that the coronavirus 
pandemic has had, and will likely continue to have, an impact on various aspects of our clinical trials. For example, with
respect to our CTX001 clinical trials for severe hemoglobinopathies (specifically, transfusion-dependent beta thalassemia 
and severe sickle cell disease), since ICU beds and related healthcare resources were significantly constrained, we elected 
to pause patient dosing in the early stages of the pandemic and may elect to pause patient dosing in certain of our trials
again if ICU beds and related healthcare resources become significantly constrained again or governmental authorities 
impose additional business or travel restrictions. And, for example, with respect to our immuno-oncology clinical trials, 
investigators participating in our clinical trials may not want to take the risk of exposing cancer patients to the coronavirus 
since the dosing of patients is conducted within an in-patient setting. Other potential impacts of the coronavirus pandemic
on our various clinical trials include patient dosing and study monitoring, which may be paused or delayed due to changes
in policies at various clinical sites, federal, state, local or foreign laws, rules and regulations, including quarantines or 
other travel restrictions, prioritization of healthcare resources toward pandemic efforts, including diminished attention of 
physicians serving as our clinical trial investigators and reduced availability of site staff supporting the conduct of our 
clinical trials, interruption or delays in the operations of the FDA, or other reasons related to the coronavirus pandemic. In 
addition, the FDA published guidance on manufacturing investigational cellular and gene therapy products during the 
coronavirus pandemic and provided risk-based recommendations to minimize potential transmission of the coronavirus to 
patients and facility personnel. The FDA expects manufacturers to evaluate whether the coronavirus poses new risks in the 
context of their specific products, facilities, processes, and manufacturing controls, and identify and mitigate factors that 
may allow for transmission of the coronavirus to patients and facility personnel and include a description of the risk 
assessment and mitigation strategies in any IND and any Biologics License Application, or BLA. If the coronavirus
pandemic continues, other aspects of our clinical trials may be adversely affected, delayed or interrupted, including, for 
example, site initiation, patient recruitment and enrollment, availability of clinical trial materials, and data analysis. Some 
patients and clinical investigators may not be able to comply with clinical trial protocols and patients may choose to
withdraw from our studies or we may have to pause enrollment or we may choose to or be required to pause enrollment 
and or patient dosing in our ongoing clinical trials in order to preserve health resources and protect trial participants. It is
unknown how long these pauses or disruptions could continue.

We currently rely on third parties to, among other things, manufacture raw materials, manufacture our product candidates
for our clinical trials, ship investigational drugs and clinical trial samples, perform quality testing and supply other goods
and services to run our business. Certain of our third-party manufacturers and suppliers paused their operations in the 
early stages of the pandemic, and some have paused their operations again as additional waves of the coronavirus
pandemic have impacted local communities and/or as a result of national and local regulations. Other of our third-party 
manufacturers and suppliers have otherwise encountered delays in providing their services. As a result, we may not be 
able to manufacture our product candidates for our clinical trials and conduct other research and development operations
and maintain current clinical and pre-clinical timelines. In addition, if additional third parties in our supply chain for 
materials are adversely impacted by restrictions resulting from the coronavirus pandemic, including staffing shortages, 
production slowdowns and disruptions in delivery systems, our supply chain may be disrupted in other ways, further 
limiting our ability to manufacture our product candidates for our clinical trials and conduct our research and development 
operations.

We maintain temporary work-from-home procedures for all employees other than for those personnel and contractors who
perform essential activities that must be completed on-site. If negative developments relating to the coronavirus pandemic 
continue, including periodic resurgence and additional “waves”, we may be required to restrict on-site staff at our offices 
and laboratories again. For example, in March 2020, we closed our offices and requested that most of our personnel, 
including all of our administrative employees, work remotely, restricted on-site staff to only those personnel and 
contractors who must perform essential activities that must be completed on-site and limited the number of staff in any 
given research and development laboratory. Our increased reliance on personnel working from home may negatively
impact productivity, or disrupt, delay, or otherwise adversely impact our business. In addition, this could increase our 
cyber-security risk, create data accessibility concerns, and make us more susceptible to communication disruptions, any of 
which could adversely impact our business operations or delay necessary interactions with local and federal regulators, 
ethics committees, manufacturing sites, research or clinical trial sites and other important agencies and contractors. We 
will continue to evaluate our return to work protocols in accordance with state and local regulations.

65

•

•

Our employees and contractors conducting research and development activities may not be able to access our laboratory 
for an extended period of time or as frequently as needed as a result of restrictions for on-site staff and reduced access to 
our offices and the possibility that governmental authorities further modify current restrictions now, or in the future, if 
additional waves of coronavirus infections (including as a result of new coronavirus variants) were to occur. As a result, 
this could delay timely completion of preclinical activities, including completing IND/CTA-enabling studies or our ability 
to select future development candidates, and initiation of additional clinical trials for other of our development programs. 
In addition, when we re-open our facilities, we could encounter delays in connection with implementing precautionary 
measures to mitigate the risk of exposing our facilities and employees to the coronavirus (for example, implementing 
screening procedures or procuring appropriate non-medical personal protective equipment for use while in our facilities)
or otherwise in connection with addressing an actual or potential exposure to the coronavirus (for example, temporarily 
closing all or a portion of a facility or disinfecting all or a portion of a facility that may have been exposed to the
coronavirus).

Health regulatory agencies globally may experience disruptions in their operations as a result of the coronavirus 
pandemic. The FDA and comparable foreign regulatory agencies may have slower response times or be under-resourced 
and, as a result, review, inspection, and other timelines may be materially delayed. Since March 2020, when foreign and 
domestic inspections by the FDA were largely placed on hold, the FDA has been working to resume routine surveillance,
bioresearch monitoring and pre-approval inspections on a prioritized basis. Since April 2021, the FDA has conducted 
limited inspections and employed remote interactive evaluations, using risk management methods, to meet user fee
commitments and goal dates. Ongoing travel restrictions and other uncertainties continue to impact oversight operations
both domestic and abroad and it is unclear when standard operational levels will resume. The FDA is continuing to
complete mission-critical work, prioritize other higher-tiered inspectional needs (e.g., for-cause inspections), and carry out 
surveillance inspections using risk-based approaches for evaluating public health. Should the FDA determine that an
inspection is necessary for approval of a marketing application and an inspection cannot be completed during the review 
cycle due to restrictions on travel, the FDA has stated that it generally intends to issue, depending on the circumstances, a
complete response letter or defer action on the application until an inspection can be completed. In 2020 and 2021, several 
companies announced receipt of complete response letters due to the FDA's inability to complete required inspections for 
their applications. Regulatory authorities outside the United States may adopt similar restrictions or other policy measures
in response to the coronavirus pandemic and may experience delays in their regulatory activities. It is unknown how long 
these disruptions could continue, were they to occur. Any elongation or de-prioritization of our clinical trials or delay in 
regulatory review resulting from such disruptions could materially affect the development and study of our product 
candidates. For example, regulatory authorities may require that we not distribute a product candidate lot until the relevant 
agency authorizes its release. Such release authorization may be delayed as a result of the coronavirus pandemic and could 
result in delays to our clinical trials.

•

The trading prices for our common shares and other biopharmaceutical companies have been highly volatile as a result of 
the coronavirus pandemic. As a result, we may face difficulties raising capital through sales of our common shares or such 
sales may be on unfavorable terms. In addition, a recession, depression or other sustained adverse market event resulting 
from the spread of the coronavirus could materially and adversely affect our business and the value of our common shares.

The coronavirus pandemic continues to rapidly evolve. The ultimate impact of the coronavirus pandemic on our business 
operations is highly uncertain and subject to change and will depend on future developments, which cannot be accurately predicted, 
including the duration of the pandemic, the emergence of additional variants of the coronavirus, additional or modified government 
actions, new information that will emerge concerning the severity and impact of COVID-19 and the coronavirus and the actions taken 
to contain coronavirus or address its impact in the short and long term, among others. We do not yet know the full extent of potential
delays or impacts on our business, our clinical trials, our research programs, healthcare systems or the global economy. We will 
continue to monitor the situation closely.

66

Positive Results From Early Preclinical Studies Or Preliminary Results from Clinical Trials Of Our Product Candidates Are 

Not Necessarily Predictive Of The Results Of Later Preclinical Studies And Any Future Clinical Trials Of Our Product Candidates. If 
We Cannot Replicate The Positive Results From Our Earlier Preclinical Studies Of Our Product Candidates In Our Later Preclinical 
Studies, Clinical Trials And Future Clinical Trials, We May Be Unable To Successfully Develop, Obtain Regulatory Approval For 
And Commercialize Our Product Candidates.

Any positive results from our preclinical studies or preliminary results from our clinical trials of our product candidates may not 

necessarily be predictive of the results from required later preclinical studies and clinical trials. Preliminary, interim and top-line data
from our clinical trials may change as more patient data become available. Preliminary, interim or top-line data from our clinical trials 
are not necessarily predictive of final results. Interim, top-line and preliminary data remain subject to audit and verification procedures 
that may result in the final data being materially different from the preliminary data we previously announced. As a result,
preliminary, interim and top-line data should be viewed with caution until the final data are available. Material adverse changes in the 
final data compared to the interim data could significantly harm our business prospects. Moreover, preliminary, interim and top-line 
data are subject to the risk that one or more of the clinical outcomes may materially change as more patient data become available
when patients mature on study, patient enrollment continues or as other ongoing or future clinical trials with a product candidate 
further develop. Past results of clinical trials may not be predictive of future results. In addition, the information we choose to publicly
disclose regarding a particular study or clinical trial is based on what is typically more extensive information, and you or others may
not agree with what we determine is the material or otherwise appropriate information to include in our disclosure. Any information
we determine not to disclose may ultimately be deemed significant with respect to future decisions, conclusions, views, activities or 
otherwise regarding a particular product candidate or our business. Similarly, even if we are able to complete our planned preclinical 
studies or any future clinical trials of our product candidates according to our current development timeline, the positive results from 
such preclinical studies and clinical trials of our product candidates may not be replicated in subsequent preclinical studies or clinical
trial results. 

Many companies in the pharmaceutical and biotechnology industries have suffered significant setbacks in late-stage clinical
trials after achieving positive results in early-stage development and we cannot be certain that we will not face similar setbacks. These
setbacks have been caused by, among other things, preclinical and other nonclinical findings made while clinical trials were underway 
or safety or efficacy observations made in preclinical studies and clinical trials, including previously unreported adverse events. 
Moreover, preclinical, nonclinical and clinical data are often susceptible to varying interpretations and analyses and many companies
that believed their product candidates performed satisfactorily in preclinical studies and clinical trials nonetheless failed to obtain FDA 
or EMA approval. 

Even If We Complete The Necessary Preclinical Studies And Clinical Trials, The Marketing Approval Process Is Expensive, 

Time-Consuming, And Uncertain And May Prevent Us From Obtaining Approvals For The Commercialization Of Any Product 
Candidates We May Develop. If We Are Not Able To Obtain, Or If There Are Delays In Obtaining, Required Regulatory Approvals,
We Will Not Be Able To Commercialize, Or Will Be Delayed In Commercializing, Product Candidates We May Develop, And Our 
Ability To Generate Revenue Will Be Materially Impaired. 

Any product candidates we may develop and the activities associated with their development and commercialization, including

their design, testing, manufacture, safety, efficacy, recordkeeping, labeling, storage, approval, advertising, promotion, sale, and 
distribution, are subject to comprehensive regulation by the FDA and other regulatory authorities in the United States, by EMA in the 
EU and by comparable authorities in other countries. Failure to obtain marketing approval for a product candidate will prevent us from 
commercializing the product candidate in a given jurisdiction. We have not received approval or clearance to market any product 
candidates from regulatory authorities in any jurisdiction and it is possible that none of our product candidates or any product 
candidates we may seek to develop in the future will ever obtain regulatory approval or clearance. We have only limited experience in 
filing and supporting the applications necessary to gain marketing approvals and expect to rely on third-party contract research
organizations, or CROs, or regulatory consultants to assist us in this process.

While we have multiple product candidates in clinical development and advanced pre-clinical development for a range of 

diseases, we have not yet submitted BLAs for any of our wholly-owned allogeneic CAR-T product candidates or our 
hemoglobinopathies product candidates in conjunction with Vertex to the FDA, or similar marketing applications to comparable 
foreign authorities. We have limited experience in submitting and supporting the applications necessary to gain regulatory approvals
and expect to rely on third-party CROs and/or regulatory consultants to assist us in this process. Submission of a BLA or other similar 
marketing applications to comparable foreign authorities and securing regulatory approval requires the submission of extensive 
preclinical and clinical data and supporting information to the various regulatory authorities for each therapeutic indication to establish 
the biologic product candidate’s safety, purity, efficacy and potency, also known as safety and effectiveness, for each desired 
therapeutic indication. A BLA must also include significant information regarding the chemistry, manufacturing and controls for the
product candidate. Securing regulatory approval also requires the submission of information about the product manufacturing process 
to, and inspection of manufacturing facilities by, the relevant regulatory authority. Should the FDA determine that an inspection is

67

necessary for approval of a marketing application and an inspection cannot be completed during the review cycle due to restrictions on
travel as a result of the coronavirus pandemic, the FDA has stated that it generally intends to issue a complete response letter. Further, 
if there is inadequate information to make a determination on the acceptability of a facility, the FDA may defer action on the
application until an inspection can be completed.

In general, the FDA requires the successful completion of two pivotal trials to support approval of a BLA, but in certain 
circumstances, will approve a BLA based on only one pivotal trial. Our ability to submit and obtain approval of a BLA is ultimately 
an FDA review decision, which will be dependent upon the data available at such time, and the available data may not be sufficiently
robust from a safety and/or efficacy perspective to support the submission or approval of a BLA.  For example, there is no assurance 
that data obtained at the completion of any of our clinical trials, including the ongoing CARBON clinical trial or ongoing CLIMB
THAL-111 and CLIMB SCD-121 clinical trials will indicate clinically meaningful benefit or support submission of a BLA, or will be 
sufficiently robust from a safety and/or efficacy perspective to support either conditional approval or full approval. Depending on the
outcome of these ongoing clinical trials, the FDA may require that we conduct additional or larger pivotal trials before we can submit 
or obtain approval of a BLA. Furthermore, if any undesirable or unacceptable side effects, unexpected characteristics or other serious
adverse events occur, and if we are unable to demonstrate such adverse events were caused by factors other than our product 
candidate, the FDA, EMA or other comparable health regulatory authorities could suspend our clinical trial until we are able to gather 
sufficient information or order us to cease further clinical studies of our product candidate. If this were to occur this would likely
result in delays in our ability to submit a BLA for regulatory approval.

Furthermore, failure of one or more clinical trials can occur at any stage in the clinical trial process. Any product candidates we

develop may not be effective, may be only moderately effective, or may prove to have undesirable or unintended side effects,
toxicities or other characteristics that may preclude our obtaining marketing approval or prevent or limit commercial use. Accordingly, 
the regulatory pathway for our product candidates is still uncertain, complex, and lengthy, and ultimately, approval may not be 
obtained. Even if our product candidates demonstrate safety and efficacy in clinical studies, regulatory delays or rejections may be
encountered as a result of many factors, including changes in regulatory policy during the period of product development. 

The process of obtaining marketing approvals, both in the United States and in other jurisdictions, is expensive, may take many 
years if additional clinical trials are required, if approval is obtained at all, and can vary substantially based upon a variety of factors, 
including the type, complexity, and novelty of the product candidates involved. Changes in marketing approval policies during the 
development period, changes in or the enactment of additional statutes or regulations, or changes in regulatory review for each 
submitted product application, may cause delays in the approval or rejection of an application. The FDA and comparable authorities in 
other countries have substantial discretion in the approval process and may refuse to accept any application or may decide that our 
data are insufficient for approval and require additional preclinical, clinical or other studies. In addition, varying interpretations of the 
data obtained from preclinical and clinical testing could delay, limit, or prevent marketing approval of a product candidate. Any 
marketing approval we ultimately obtain may be limited or subject to restrictions or post-approval commitments that render the 
approved product not commercially viable. 

If we experience delays in obtaining approval or if we fail to obtain approval of any product candidates we may develop, the

commercial prospects for those product candidates may be harmed, and our ability to generate revenues will be materially impaired. 

We May Never Obtain FDA Approval For Any Of Our Product Candidates In The United States, And Even If We Do, We May
Never Obtain Approval For Or Commercialize Any Of Our Product Candidates In Any Other Jurisdiction, Which Would Limit Our 
Ability To Realize Their Full Market Potential. 

In order to eventually market any of our product candidates in any particular jurisdiction, we must establish and comply with 
numerous and varying regulatory requirements on a jurisdiction-by-jurisdiction basis regarding safety and efficacy. Approval by the 
FDA in the United States, if obtained, does not ensure approval by regulatory authorities in other countries or jurisdictions. In
addition, clinical trials conducted in one country may not be accepted by regulatory authorities in other countries, and regulatory 
approval in one country does not guarantee regulatory approval in any other country. Approval processes vary among countries and 
can involve additional product testing and validation and additional administrative review periods. Seeking regulatory approval in 
multiple jurisdictions could result in difficulties and costs for us and require additional preclinical studies or clinical trials which could 
be costly and time-consuming. Regulatory requirements can vary widely from country to country and could delay or prevent the 
introduction of our products in certain countries. Regulatory approval processes outside the United States involve all of the risks
associated with FDA approval. We do not have any product candidates approved for sale in any jurisdiction, including international 
markets, and, as a company, do not have experience in obtaining regulatory approval in international markets. If we fail to comply
with regulatory requirements in international markets or to obtain and maintain required approvals, or if regulatory approvals in

68

international markets are delayed, our target market will be reduced and our ability to realize the full market potential of our products
will be unrealized. 

Breakthrough Therapy Designation, Fast Track Designation, Regenerative Medicine Advanced Therapy Designation or Priority 

Review by the FDA, or PRIME Scheme by the EMA, Even If Granted for Any of Our Product Candidates, May Not Lead to a Faster 
Development, Regulatory Review or Approval Process, and It May Not Increase the Likelihood That Any of Our Product Candidates
Will Receive Marking Approval.

We may seek a Breakthrough Therapy Designation for some of our product candidates. A breakthrough therapy is defined as a 

therapy that is intended, alone or in combination with one or more other therapies, to treat a serious or life-threatening disease or 
condition, and preliminary clinical evidence indicates that the therapy may demonstrate substantial improvement over existing 
therapies on one or more clinically significant endpoints, such as substantial treatment effects observed early in clinical development.
For therapies that have been designated as breakthrough therapies, interaction and communication between the FDA and the sponsor 
of the trial can help to identify the most efficient path for clinical development while minimizing the number of patients placed in
ineffective control regimens. Therapies designated as breakthrough therapies by the FDA may also be eligible for priority review and 
accelerated approval. Designation as a breakthrough therapy is within the discretion of the FDA. Accordingly, even if we believe one
of our product candidates meets the criteria for designation as a breakthrough therapy, the FDA may disagree and instead determine 
not to make such designation. In any event, the receipt of a Breakthrough Therapy Designation for a product candidate may not result 
in a faster development process, review or approval compared to therapies considered for approval under conventional FDA
procedures and does not assure ultimate approval by the FDA. In addition, even if one or more of our product candidates qualify as 
breakthrough therapies, the FDA may later decide that such product candidates no longer meet the conditions for qualification or 
decide that the time period for FDA review or approval will not be shortened.

We have obtained and may seek Fast Track Designation for some of our product candidates. For instance, CTX001 has been 

granted Fast Track Designation by the FDA for the treatment of TDT and SCD. If a therapy is intended for the treatment of a serious
or life-threatening condition and the therapy demonstrates the potential to address unmet medical needs for this condition, the therapy 
sponsor may apply for Fast Track Designation. The FDA has broad discretion whether or not to grant this designation, so even if we 
believe a particular product candidate is eligible for this designation; we cannot assure you that the FDA would decide to grant it.
Even if we do receive Fast Track Designation, we may not experience a faster development process, review or approval compared to
conventional FDA procedures. For Fast Track products, sponsors may have greater interactions with the FDA and the FDA may 
initiate review of sections of a Fast Track product's marketing application before the application is complete. This rolling review may
be available if the FDA determines, after preliminary evaluation of clinical data submitted by the sponsor, that a Fast Track product 
may be effective. The sponsor must also provide, and the FDA must approve, a schedule for the submission of the remaining 
information and the sponsor must pay applicable user fees. However, the FDA's time period goal for reviewing an application does not 
begin until the last section of the application is submitted. The FDA may withdraw Fast Track Designation if it believes that the 
designation is no longer supported by data from our clinical development program. Fast Track Designation alone does not guarantee 
qualification for the FDA's priority review procedures.

We have obtained and may seek RMAT designation for some of our product candidates. For instance, CTX001 has been granted 

RMAT designation by the FDA for the treatment of TDT and SCD, as well as CTX110 for the treatment of relapsed or refractory B-
cell lymphoma. In 2017, the FDA established the RMAT designation as part of its implementation of the 21st Century Cures Act to 
expedite review of any drug that meets the following criteria: it qualifies as a RMAT, which is defined as a cell therapy, therapeutic
tissue engineering product, human cell and tissue product, or any combination product using such therapies or products, with limited 
exceptions; it is intended to treat, modify, reverse, or cure a serious or life-threatening disease or condition; and preliminary clinical
evidence indicates that the drug has the potential to address unmet medical needs for such a disease or condition. Like Breakthrough
Therapy Designation, RMAT designation provides potential benefits that include more frequent meetings with FDA to discuss the
development plan for the product candidate, and eligibility for rolling review and priority review. Products granted RMAT designation
may also be eligible for accelerated approval on the basis of a surrogate or intermediate endpoint reasonably likely to predict long-
term clinical benefit, or reliance upon data obtained from a meaningful number of sites, including through expansion to additional
sites. RMAT-designated products that receive accelerated approval may, as appropriate, fulfill their post-approval requirements 
through the submission of clinical evidence, clinical trials, patient registries, or other sources of real world evidence, such as electronic 
health records; through the collection of larger confirmatory data sets; or via post-approval monitoring of all patients treated with such
therapy prior to approval of the therapy. There is no assurance that we will be able to obtain RMAT designation for other of our 
product candidates. RMAT designation does not change the FDA's standards for product approval, and there is no assurance that such
designation will result in expedited review or approval or that the approved indication will not be narrower than the indication covered 
by the designation. Additionally, RMAT designation can be revoked if the criteria for eligibility cease to be met as clinical data 
emerges.

69

If the FDA determines that a product candidate offers a treatment for a serious condition and, if approved, the product would 

provide a significant improvement in safety or effectiveness, the FDA may designate the product candidate for priority review. A
priority review designation means that the goal for the FDA to review an application is six months, rather than the standard review 
period of ten months. The FDA has broad discretion with respect to whether or not to grant priority review status to a product 
candidate, so even if we believe a particular product candidate is eligible for such designation or status, the FDA may decide not to 
grant it. Moreover, a priority review designation does not necessarily result in expedited regulatory review or approval process or 
necessarily confer any advantage with respect to approval compared to conventional FDA procedures. Receiving priority review from 
the FDA does not guarantee approval within the six-month review cycle or at all.

Finally, we have obtained and may seek to qualify our product candidates under the PRIME scheme from the EMA. For 
instance, CTX001 has been granted PRIME designation for the treatment of TDT and SCD. The PRIME scheme is open to medicines 
under development and for which the applicant intends to apply for an initial MAA through the centralized procedure. Eligible 
products must target conditions for which where is an unmet medical need (there is no satisfactory method of diagnosis, prevention or 
treatment in the EU or, if there is, the new medicine will bring a major therapeutic advantage) and they must demonstrate the potential 
to address the unmet medical need by introducing new methods or therapy or improving existing ones. There is no assurance that we 
will be able to obtain PRIME qualification for other of our product candidates. PRIME does not change the standards for product 
approval, and there is no assurance that such qualification will result in expedited review or approval. Moreover, where, during the 
course of development, a medicine no longer meets the eligibility criteria, support under the PRIME scheme may be withdrawn.

We May Be Unable To Obtain Orphan Drug Designation Or Exclusivity. If Our Competitors Are Able To Obtain Orphan Drug 
Exclusivity For Products That Constitute The Same Drug And Treat The Same Indications As Our Product Candidates, We May Not 
Be Able To Have Competing Products Approved By The Applicable Regulatory Authority For A Significant Period Of Time.

We have received orphan drug designation in the United States from the FDA for certain of our programs, including for 

CTX120 for the treatment of multiple myeloma and for CTX130 for the treatment of T-cell lymphomas. We also have received 
orphan drug designation from the FDA and the European Commission for CTX001 for the treatment of TDT and SCD. We may in the
future seek orphan drug designation for certain of our other product candidates, but we may be unable to maintain orphan drug
designation or obtain any benefits associated with orphan drug designation, including market exclusivity. Regulatory authorities in
some jurisdictions, including the United States and the European Union, may designate drugs and biologics intended to treat relatively
small patient populations as orphan drugs. Under the Orphan Drug Act of 1983, FDA may designate a product candidate as an orphan
drug if it is intended to treat a rare disease or condition, which is defined as a disease or condition having a patient population of fewer 
than 200,000 individuals in the United States, or a patient population greater than 200,000 in the United States where there is no
reasonable expectation that the cost of developing the drug will be recovered from sales in the United States. In the European Union, 
the European Commission after recommendation from the EMA’s Committee for Orphan Medicinal Products grants orphan drug 
designation to promote the development of products that are intended for the diagnosis, prevention or treatment of a life-threatening or 
chronically debilitating condition affecting not more than 5 in 10,000 persons in the European Union. Additionally, orphan 
designation is granted for products intended for the diagnosis, prevention or treatment of a life-threatening, seriously debilitating or 
serious and chronic condition and when, without incentives, it is unlikely that sales of the drug in the European Union would be 
sufficient to justify the necessary investment in developing the drug or biologic product. An orphan drug designation provides a 
number of benefits, including fee reductions, regulatory assistance, and in the European Union the ability to apply for a centralized EU
marketing authorization.

Certain of our current product candidates and our future product candidates may target patient populations that are smaller than
the numbers described above. If we request orphan drug designation for our product candidates, there can be no assurances that FDA 
or the European Commission will grant any of our product candidates such designation. Additionally, the designation of any of our 
product candidates as an orphan product does not guarantee that any regulatory agency will accelerate regulatory review of, or 
ultimately approve, that product candidate, nor does it limit the ability of any regulatory agency to grant orphan drug designation to
product candidates of other companies that treat the same indications as our product candidates prior to our product candidates 
receiving exclusive marketing approval.

Generally, if a product candidate with an orphan drug designation receives the first marketing approval for the indication for 

which it has such designation, the product is entitled to a period of marketing exclusivity, which precludes the FDA or the European 
Commission from approving another marketing application for a product that constitutes the same drug treating the same indication 
for that marketing exclusivity period, except in limited circumstances. If another sponsor receives such approval before we do 
(regardless of our orphan drug designation), we will be precluded from receiving marketing approval for our product for the applicable 
exclusivity period. The applicable period is seven years in the United States and 10 years in the European Union. The exclusivity 
period in the United States can be extended by six months if the sponsor submits pediatric data that fairly respond to a written request 
from the FDA for such data. The exclusivity period in the European Union can be reduced to six years if, at the end of the fifth year, it 
is established that the product no longer meets the criteria for orphan drug designation, because, for example, the product is 

70

sufficiently profitable so that market exclusivity is no longer justified. Orphan drug exclusivity may be revoked if any regulatory
agency determines that the request for designation was materially defective or if the manufacturer is unable to assure sufficient 
quantity of the product to meet the needs of patients with the rare disease or condition.

Even if we obtain orphan drug exclusivity for a product candidate, that exclusivity may not effectively protect the product 
candidate from competition because different drugs can be approved for the same condition. In the United States, even after an orphan
drug is approved, the FDA may subsequently approve another drug for the same condition if the FDA concludes that the latter drug is 
not the same drug, including if it is clinically superior in that it is shown to be safer, more effective or makes a major contribution to 
patient care. In the European Union, marketing authorization may be granted to a similar medicinal product for the same orphan
indication if:

•

•

•

the second applicant can establish in its application that its medicinal product, although similar to the orphan medicinal
product already authorized, is safer, more effective or otherwise clinically superior;

the holder of the marketing authorization for the original orphan medicinal product consents to a second orphan medicinal 
product application; or

the holder of the marketing authorization for the original orphan medicinal product cannot supply sufficient quantities of 
orphan medicinal product.

There is no assurance that we will be able to obtain orphan drug designation for other of our other product candidates. Orphan

drug designation does not change the standards for product approval, and there is no assurance that such designation will result in
expedited review or approval.

Adverse Public Perception Of Gene Editing And Cellular Therapy Products May Negatively Impact Demand For, Or 

Regulatory Approval Of, Our Product Candidates.

Our product candidates involve editing the human genome. The clinical and commercial success of our product candidates will 

depend in part on public acceptance of the use of gene-editing therapies for the prevention or treatment of human diseases. Public 
attitudes may be influenced by claims that gene editing is unsafe, unethical, or immoral, and, consequently, our products may not gain
the acceptance of the public or the medical community. Negative public reaction to gene therapy in general could result in greater 
government regulation and stricter labeling requirements of gene-editing products, including any of our product candidates, and could 
cause a decrease in the demand for any products we may develop. Adverse public attitudes may adversely impact our ability to enroll 
clinical trials. Moreover, our success will depend upon physicians prescribing, and their patients being willing to receive, treatments
that involve the use of product candidates we may develop in lieu of, or in addition to, existing treatments with which they are already 
familiar and for which greater clinical data may be available. 

In particular, gene-editing technology is subject to public debate and heightened regulatory scrutiny due to ethical concerns 

relating to the application of gene-editing technology to human embryos or the human germline. For example, in April 2016, a group 
of scientists reported on their attempts to edit the genome of human embryos to modify the gene for hemoglobin beta. This is the gene 
in which a mutation occurs in patients with the inherited blood disorder beta thalassemia. Although this research was purposefully 
conducted in embryos that were not viable, the work prompted calls for a moratorium or other types of restrictions on gene editing of 
human eggs, sperm, and embryos. Additionally, in November 2018, Dr. Jiankui He, a biophysics researcher who was an associate
professor in the Department of Biology of the Southern University of Science and Technology in Shenzhen, China, reportedly claimed 
he had created the first human genetically edited babies, twin girls. This claim, and another that Dr. He had helped create a second 
gene-edited pregnancy, was subsequently confirmed by Chinese authorities and was negatively received by the public, in particular by 
those in the scientific community. News reports indicate that Dr. He was sentenced to three years in prison and fined $430,000 in 
December 2019 by the Chinese government for illegal medical practice in connection with such activities. In the wake of the claim, 
the World Health Organization established a new advisory committee to create global governance and oversight standards for human 
gene editing. The Alliance for Regenerative Medicine in Washington, D.C. has called for a voluntary moratorium on the use of gene-
editing technologies, including CRISPR/Cas9, in research that involves altering human embryos or human germline cells and has also 
released principles for the use of gene editing in therapeutic applications endorsed by a number of companies that use gene-editing 
technologies. Similarly, the NIH has announced that it would not fund any use of gene-editing technologies in human embryos, noting 
that there are multiple existing legislative and regulatory prohibitions against such work, including the Dickey-Wicker Amendment, 
which prohibits the use of appropriated funds for the creation of human embryos for research purposes or for research in which human
embryos are destroyed. Laws in the United Kingdom prohibit genetically modified embryos from being implanted into women, but 
embryos can be altered in research labs under license from the Human Fertilisation and Embryology Authority. Research on embryos
is more tightly controlled in many other European countries.

71

Although we do not use our technologies to edit human embryos or the human germline, such public debate about the use of 

gene-editing technologies in human embryos and heightened regulatory scrutiny could prevent or delay our development of product 
candidates. More restrictive government regulations or negative public opinion would have a negative effect on our business or 
financial condition and may delay or impair our development and commercialization of product candidates or demand for any
products we may develop. Adverse events in our preclinical studies or clinical trials or those of our competitors or of academic 
researchers utilizing gene-editing technologies, even if not ultimately attributable to product candidates we may identify and develop, 
and the resulting publicity could result in increased governmental regulation, unfavorable public perception, potential regulatory 
delays in the testing or approval of potential product candidates we may identify and develop, stricter labeling requirements for those
product candidates that are approved, and a decrease in demand for any such product candidates. 

If, In The Future, We Are Unable To Establish Sales And Marketing Capabilities Or Enter Into Agreements With Third Parties
To Sell And Market Products Based On Our Technologies, We May Not Be Successful In Commercializing Our Products If And When
Any Products Candidates Are Approved And We May Not Be Able To Generate Any Revenue. 

We do not currently have a sales or marketing infrastructure and, as a company, have no experience in the sale, marketing or 

distribution of therapeutic products. To achieve commercial success for any approved product candidate for which we retain sales and 
marketing responsibilities, we must build our sales, marketing, managerial and other non-technical capabilities or make arrangements
with third parties to perform these services. In the future, we may choose to build a focused sales and marketing infrastructure to sell,
or participate in sales activities with our collaborators for, some of our product candidates if any are approved. 

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

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

•

•

•

•

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

the inability of sales personnel to obtain access to physicians or persuade adequate numbers of physicians to prescribe any
future product that we may develop; 

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

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

If we enter into arrangements with third parties to perform sales, marketing and distribution services, our product revenue or the

profitability to us from these revenue streams is likely to be lower than if we were to market and sell any product candidates that we
develop ourselves. In addition, we may not be successful in entering into arrangements with third parties to sell and market our 
product candidates or may be unable to do so on terms that are favorable to us. We likely will have little control over such third parties 
and any of them may fail to devote the necessary resources and attention to sell and market our product candidates effectively. If we 
do not establish sales and marketing capabilities successfully, either on our own or in collaboration with third parties, we may not be 
successful in commercializing our product candidates. Further, our business, results of operations, financial condition and prospects
will be materially adversely affected. 

Even If We, Or Any Collaborators We May Have, Obtain Marketing Approvals For Any Product Candidates We Develop, The 

Terms Of Approvals And Ongoing Regulation Of Our Products Could Require The Substantial Expenditure Of Resources And May
Limit How We, Or They, Manufacture And Market Our Products, Which Could Materially Impair Our Ability To Generate Revenue.

Any product candidate for which we obtain marketing approval, along with the manufacturing processes, post-approval clinical 
data, labeling, advertising, and promotional activities for such product, will be subject to continual requirements of and review by the 
FDA and other regulatory authorities. These requirements include submissions of safety and other post-marketing information and 
reports, registration and listing requirements, current Good Manufacturing Practice, or cGMP, requirements relating to quality control, 
quality assurance and corresponding maintenance of records and documents and requirements regarding recordkeeping. Even if 
marketing approval of a product candidate is granted, the approval may be subject to limitations on the indicated uses for which the 
product may be marketed or to the conditions of approval, or contain requirements for costly post-marketing testing and surveillance 
to monitor the safety or efficacy of the product. The FDA also may place other conditions on approvals including the requirement for 
a REMS to assure the safe use of the product. If the FDA concludes a REMS is needed, the sponsor of the BLA, must submit a

72

proposed REMS before it can obtain approval. A REMS could include medication guides, physician communication plans, or 
elements to assure safe use, such as restricted distribution methods, patient registries and other risk minimization tools.

Accordingly, assuming we, or any collaborators we may have, receive marketing approval for one or more product candidates
we develop, we, and such collaborators, and our and their contract manufacturers will continue to expend time, money, and effort in
all areas of regulatory compliance, including manufacturing, production, product surveillance, and quality control. In addition, the
holder of an approved BLA is obligated to monitor and report adverse events and any failure of a product to meet the specifications in
the BLA. The holder of an approved BLA must also submit new or supplemental applications and obtain FDA approval for certain 
changes to the approved product, product labeling or manufacturing process. Advertising and promotional materials must comply with 
FDA rules and are subject to FDA review, in addition to other potentially applicable federal and state laws. 

If we and such collaborators are not able to comply with post-approval regulatory requirements, we and such collaborators could 

have the marketing approvals for our products withdrawn by regulatory authorities and our, or such collaborators’, ability to market 
any future products could be limited, which could adversely affect our ability to achieve or sustain profitability. Further, the cost of 
compliance with post-approval regulations may have a negative effect on our business, operating results, financial condition, and 
prospects. 

Any Product Candidate For Which We, Or Any Collaborators We May Have, Obtain Marketing Approval Could Be Subject To 

Restrictions Or Withdrawal From The Market, And We Or They May Be Subject To Substantial Penalties If We Or They Fail To
Comply With Regulatory Requirements Or If We Or They Experience Unanticipated Problems With Our Products, When And If Any 
Of Them Are Approved. 

The FDA and other regulatory agencies closely regulate the post-approval marketing and promotion of biologics to ensure that 

they are marketed only for the approved indications and in accordance with the provisions of the approved labeling. The FDA and 
other regulatory agencies impose stringent restrictions on manufacturers’ communications regarding off-label use, and if we, or any
collaborators we may have, do not market our products for their approved indications, we or they may be subject to enforcement 
action for off-label marketing by the FDA and other federal and state enforcement agencies, including the United States Department of 
Justice. Violation of the Federal Food, Drug, and Cosmetic Act and other statutes, including the False Claims Act, relating to the
promotion and advertising of prescription products may also lead to investigations or allegations of violations of federal and state 
health care fraud and abuse laws and state consumer protection laws.

In addition, later discovery of previously unknown problems with a product candidate, including adverse events of unanticipated 

severity or frequency, or with our or other collaborators’ manufacturing processes, or failure to comply with regulatory requirements,
may result in, among other things: 

•

•

•

•

•

•

•

•

•

•

•

•

•

restrictions on such products, manufacturers, or manufacturing processes; 

restrictions on the labeling or marketing of a product; 

restrictions on the distribution or use of a product; 

requirements to conduct post-marketing clinical trials; 

receipt of warning or untitled letters; 

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

refusal to approve pending applications or supplements to approved applications that we or our collaborators submit; 

fines, restitution, or disgorgement of profits or revenue; 

suspension or withdrawal of marketing approvals or revocation of biologics licenses; 

suspension of any ongoing clinical trials;

refusal to permit the import or export of our products; 

product seizure or detention; and 

injunctions or the imposition of civil or criminal penalties. 

The FDA’s policies may change and additional government regulations may be enacted that could prevent, limit or delay 

regulatory approval of our product candidates. If we or our collaborators are slow or unable to adapt to changes in existing

73

requirements or the adoption of new requirements or policies, or if we or our collaborators are not able to maintain regulatory 
compliance, we or our collaborators may lose any marketing approval that we or our collaborators may have obtained, which would 
adversely affect our business, prospects and ability to achieve or sustain profitability.

Any government investigation of alleged violations of law, including investigations of any of our vendors, could require us to 

expend significant time and resources in response and could generate negative publicity. The occurrence of any event or penalty 
described above may also inhibit our or our collaborators’ ability to commercialize any product candidates we may develop and 
adversely affect our business, financial condition, results of operations, and prospects.

The Commercial Success Of Any Of Our Product Candidates Will Depend Upon Its Degree Of Market Acceptance By

Physicians, Patients, Third-party Payors And Others In The Medical Community.

Ethical, social and legal concerns about gene therapy could result in additional regulations restricting or prohibiting our 

products. Even with the requisite approvals from FDA in the United States, the EMA in the EU and other regulatory authorities 
internationally, the commercial success of our product candidates will depend, in significant part, on the acceptance of physicians,
patients and health care payors of gene therapy products in general, and our product candidates in particular, as medically necessary,
cost-effective and safe. Any product that we commercialize may not gain acceptance by physicians, patients, health care payors and 
others in the medical community. The degree of market acceptance of gene therapy products and, in particular, our product candidates,
if approved for commercial sale, will depend on several factors, including: 

•

•

•

•

•

•

•

•

•

•

•

•

•

•

the efficacy, durability and safety of such product candidates as demonstrated in any future clinical trials; 

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

the cost of treatment relative to alternative treatments; 

the clinical indications for which the product candidate is approved by FDA, the EMA or other regulatory authorities;

patient awareness of, and willingness to seek, genotyping;

the willingness of physicians to prescribe new therapies;

the willingness of the target patient population to try new therapies; 

the prevalence and severity of any side effects; 

product labeling or product insert requirements of FDA, the EMA or other regulatory authorities, including any limitations
or warnings contained in a product’s approved labeling; 

relative convenience and ease of administration; 

the strength of marketing and distribution support; 

the timing of market introduction of competitive products; 

publicity concerning our products or competing products and treatments; and 

sufficient third-party payor coverage and reimbursement. 

Even if a potential product displays a favorable efficacy and safety profile in preclinical studies and future clinical trials, market 
acceptance of the product will not be fully known until after it is launched. If our product candidates do not achieve an adequate level
of acceptance following regulatory approval, if ever, we may not generate significant product revenue and may not become profitable. 

We May Expend Our Limited Resources To Pursue A Particular Product Candidate Or Indication And Fail To Capitalize On

Product Candidates Or Indications That May Be More Profitable Or For Which There Is A Greater Likelihood Of Success.

We have limited financial and managerial resources. As a result, we may forego or delay pursuit of opportunities with other 
product candidates or for other indications that later prove to have greater commercial potential. Our resource allocation decisions
may cause us to fail to timely capitalize on viable commercial products or profitable market opportunities. Our spending on current 
and future research and development programs and product candidates for specific indications may not yield any commercially viable 
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 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. 

74

We Face Significant Competition In An Environment Of Rapid Technological Change, And The Possibility That Our 

Competitors May Achieve Regulatory Approval Before Us Or Develop Therapies That Are More Advanced Or Effective Than Ours, 
Which May Harm Our Business And Financial Condition And Our Ability To Successfully Market Or Commercialize Our Product 
Candidates. 

The biotechnology and pharmaceutical industries, including in the gene-editing, gene therapy and cell therapy fields, are 
characterized by rapidly advancing technologies, intense competition and a strong emphasis on intellectual property and proprietary 
products. While we believe that our technology, development experience and scientific knowledge provide us with competitive 
advantages, we currently face, and will continue to face, substantial competition from many different sources, including large 
pharmaceutical, specialty pharmaceutical and biotechnology companies; academic institutions and governmental agencies; and public
and private research institutions, some or all of which may have greater access to capital or resources than we do. For any products
that we may ultimately commercialize, not only will we compete with any existing therapies and those therapies currently in 
development, but we will also have to compete with new therapies that may become available in the future. 

We compete in the segments of the pharmaceutical, biotechnology and other related markets that utilize technologies

encompassing genomic medicines to create therapies, including gene editing, gene therapy and cell therapy. In addition, we compete 
with companies working to develop therapies in areas related to our specific research and development programs. 

Our platform and product focus is on the development of therapies using CRISPR/Cas9 gene-editing technology. We are aware 

of several companies focused on developing therapies in various indications using CRISPR/Cas9 gene-editing technology, including
Intellia Therapeutics and Editas Medicine. In addition, several academic groups have developed new gene-editing technologies based 
on CRISPR/Cas9, such as base editing and prime editing, that may have utility in therapeutic development. Companies seeking to 
develop therapies based on these technologies include Beam Therapeutics and Prime Medicine

There are also companies developing therapies using additional gene-editing technologies, such as TALENs, meganucleases and 

ZFNs. These companies include 2seventy bio, Allogene Therapeutics, Cellectis, Precision BioSciences and Sangamo Therapeutics.

We are also aware of companies developing therapies in various areas related to our specific research and development 
programs. In hemoglobinopathies, these companies include Acceleron Pharma, Aruvant Therapeutics, Beam Therapeutics, bluebird 
bio, Editas Medicine, Global Blood Therapeutics, Novartis Pharmaceuticals and Sangamo Therapeutics. In immuno-oncology, these 
companies include 2seventy bio, Allogene Therapeutics, Bristol Myers Squibb, Caribou Biosciences, Cellectis, Fate Therapeutics, 
Gilead Sciences, Legend Biotech, Novartis Pharmaceuticals, Poseida Therapeutics and Precision BioSciences. In regenerative 
medicine, these companies include BlueRock Therapeutics (acquired by Bayer in 2019), Sana Biotechnology and Semma
Therapeutics (acquired by Vertex in 2019). In in vivo, these companies include Editas Medicine, Intellia Therapeutics, Sarepta
Therapeutics, Ultragenyx and Verve Therapeutics.

Gene editing is a highly active field of research and new technologies, related or unrelated to CRISPR, may be discovered and 

create new competition. These new technologies could have advantages over CRISPR/Cas9 gene editing in some applications and 
there can be no certainty that other gene-editing technologies will not be considered better or more attractive than our technology for 
the development of products. For example, Cas9 may be determined to be less attractive than other CRISPR proteins, such as Cas12a
or novel Cas enzymes that have yet to be discovered, or other CRISPR-associated nuclease variants that can edit human DNA, such as 
base editors and prime editors.

In addition to competition from other gene-editing therapies or gene or cell therapies, any product we may develop may also 

face competition from other types of therapies, such as small molecule, antibody or protein therapies. In addition, new scientific
discoveries may cause CRISPR/Cas9 technology, or gene editing as a whole, to be considered an inferior form of therapy. 

In addition, many of our current or potential competitors, either alone or with their collaboration partners, have significantly
greater financial resources and expertise in research and development, manufacturing, preclinical testing, conducting clinical trials,
obtaining regulatory approvals and marketing approved products than we do. Mergers and acquisitions in the pharmaceutical, 
biotechnology, and gene and cell therapy industries may result in even more resources being concentrated among a smaller number of 
our competitors. Smaller or early-stage companies may also prove to be significant competitors, particularly through collaborative 
arrangements with large and established companies. These competitors also compete with us in recruiting and retaining qualified 
scientific and management personnel and establishing clinical trial sites and patient registration for clinical trials, as well as in
acquiring technologies complementary to, or necessary for, our programs. Our commercial opportunity could be reduced or eliminated 
if our competitors develop and commercialize products that are safer, more effective, have fewer or less severe side effects, are more 
convenient, have broader acceptance and higher rates of reimbursement by third-party payors or are less expensive than any products
that we may develop. Our competitors also may obtain FDA or other regulatory approval for their products more rapidly than we may
obtain approval for ours, which could result in our competitors establishing a strong market position before we are able to enter the

75

market. Additionally, technologies developed by our competitors may render our potential product candidates uneconomical or 
obsolete, and we may not be successful in marketing any product candidates we may develop against competitors. The key
competitive factors affecting the success of all of our programs are likely to be their efficacy, safety, convenience, and availability of 
reimbursement.

If our current programs are approved for the indications for which we are currently planning clinical trials, they may compete
with other products currently under development, including gene-editing, gene therapy, and cell therapy products. Competition with 
other related products currently under development may include competition for clinical trial sites, patient recruitment, and product 
sales. In addition, due to the intense research and development taking place in the gene-editing field, including by us and our 
competitors, the intellectual property landscape is in flux and highly competitive. There may be significant intellectual property 
related litigation and proceedings relating to our owned and in-licensed, and other third-party, intellectual property and proprietary 
rights in the future. For example, see our discussion of the ‘048 interference, the ‘115 interference and European opposition
proceedings in “Risk Factors – Risks Related to Intellectual Property - Third-party Claims Of Intellectual Property Infringement 
Against Us, Our Licensors Or Our Collaborators May Prevent Or Delay Our Product Discovery and Development Efforts.”

Moreover, as a result of the expiration or successful challenge of our patent rights, we could face more litigation with respect to

the validity and/or scope of patents relating to our competitors’ products and our patents may not be sufficient to prevent our 
competitors from commercializing competing products. The availability of our competitors’ products could limit the demand, and the
price we are able to charge, for any products that we may develop and commercialize. 

Even If We Are Able To Commercialize Any Product Candidates, Such Products May Become Subject To Unfavorable Pricing 

Regulations, Third-party Reimbursement Practices, Or Healthcare Reform Initiatives, Which Would Harm Our Business. 

The regulations that govern marketing approvals, pricing, and reimbursement for new biologic products vary widely from

country to country. Some countries require approval of the sale price of a product before it can be marketed. In many countries, the
pricing review period begins after marketing or product licensing approval is granted. In some non-U.S. markets, prescription
pharmaceutical pricing remains subject to continuing governmental control even after initial approval is granted. As a result, we might 
obtain marketing approval for a product in a particular country, but then be subject to price regulations that delay our commercial 
launch of the product, possibly for lengthy time periods, and negatively impact the revenues we are able to generate from the sale of 
the product in that country. Adverse pricing limitations may hinder our ability to recoup our investment in one or more product 
candidates, even if any product candidates we may develop obtain marketing approval. 

Our ability to commercialize any products successfully also will depend in part on the extent to which reimbursement for these 
products and related treatments will be available from government health administration authorities, private health insurers, and other 
organizations. Third-party payors, such as private health insurers, health maintenance organizations, and governmental programs such
as Medicare and Medicaid, decide which medications they will pay for and establish reimbursement levels. A primary trend in the 
U.S. healthcare industry and elsewhere is cost containment. Governmental and private third-party payors have attempted to control 
costs by limiting coverage and the amount of reimbursement for particular medications. Increasingly, third-party payors are requiring 
that drug companies provide them with predetermined discounts from list prices and are challenging the prices charged for medical 
products. We cannot be sure that reimbursement will be available for any product that we commercialize and, if reimbursement is 
available, the level of reimbursement. Reimbursement may impact the demand for, or the price of, any product candidate for which we 
obtain marketing approval. If reimbursement is not available or is available only to limited levels, we may not be able to successfully 
commercialize any product candidate for which we obtain marketing approval. See the sections entitled “Business – Coverage,
Pricing and Reimbursement” and “Business – Healthcare Reform.”

There may be significant delays in obtaining reimbursement for newly approved products, and reimbursement coverage may be 

more limited than the purposes for which the product is approved by the FDA or similar regulatory authorities outside the United 
States. Moreover, eligibility for reimbursement does not imply that any product will be paid for in all cases or at a rate that covers our 
costs, including research, development, manufacture, sale, and distribution. Interim reimbursement levels for new products, if 
applicable, may also not be sufficient to cover our costs and may not be made permanent. Reimbursement rates may vary according to 
the use of the product and the clinical setting in which it is used, may be based on reimbursement levels already set for lower cost 
products and may be incorporated into existing payments for other services. Net prices for products may be reduced by mandatory 
discounts or rebates required by government healthcare programs or private payors and by any future relaxation of laws that presently
restrict imports of products from countries where they may be sold at lower prices than in the United States. Third-party payors often 
rely upon Medicare coverage policy and payment limitations in setting their own reimbursement policies. Our inability to promptly 
obtain coverage and profitable payment rates from both government-funded and private payors for any approved products we may
develop could have a material adverse effect on our operating results, our ability to raise capital needed to commercialize products,
and our overall financial condition. 

76

Risks Related to Our Relationships with Third Parties 

Our Collaborators And Strategic Partners May Control Aspects Of Our Clinical Trials and Commercialization Efforts, Which

Could Result In Delays And Other Obstacles In The Commercialization Of Our Proposed Products And Materially Harm Our Results 
Of Operations.

We have entered into strategic collaborations and licenses, including with Vertex, Bayer, ViaCyte, Nkarta and Capsida, and may

enter into additional collaborations and licenses with other third parties in the future. For some programs, we also depend on, or may 
in the future depend on, third-party collaborators and strategic partners to design and conduct our clinical trials, and for any approved 
products, the commercialization of such products. Some of these collaborations provide us with important technologies in order to 
more fully develop our product candidates and we may enter into collaborations with other companies to provide us with important 
technologies or funding for our programs. The success of these arrangements will depend heavily on the efforts and activities of our 
collaborators and licensing partners.

Collaborators generally have significant discretion in determining the efforts and resources that they will apply to these 
collaborations and collaborators may not perform their obligations as expected. In some situations, we may not be able to influence 
our collaboration partners’ decisions regarding the development and commercialization of our partnered product candidates, and as a
result, our collaboration partners may not pursue or prioritize the development and commercialization of those partnered product 
candidates in a manner that is in our best interest. In addition, collaborators could independently develop, or develop with third parties, 
products that compete directly or indirectly with our product candidates if the collaborators believe that the competitive products are
more likely to be successfully developed or can be commercialized under terms that are more economically attractive than ours. 
Disagreements between parties to a collaboration arrangement regarding clinical development and commercialization matters can lead 
to delays in the development process or commercializing the applicable product candidate and, in some cases, termination of the 
collaboration arrangement or result in litigation or arbitration, which would be time-consuming and expensive. Collaborators may also
fail to comply with applicable regulatory requirements regarding the development, manufacture, distribution or marketing of a product 
candidate or product. Licensors generally have sole discretion in determining the efforts and resources that they will apply to the
licensed products.

As a result, we may not be able to conduct any of our partnered programs in the manner or on the time schedule we currently 

contemplate, which may negatively impact our business operations. In addition, if any of these collaborators or strategic partners 
withdraw support for our programs or proposed products or otherwise impair their development or commercialization, our business 
could be negatively affected. Additionally, if one of our collaborators terminates its agreement with us, we may find it more difficult 
to attract new collaborators and our perception in the business and financial communities could be adversely affected.

We Have Partnered With Vertex On Our Lead Program CTX001; Vertex Has Significant Control Over The CTX001 Program.

We have entered into a series of agreements with Vertex that contemplate certain research, development, manufacturing and 

commercialization activities involving various targets. Pursuant to these agreements, Vertex has sole authority to conduct certain
activities. For example, under our 2015 Collaboration Agreement with Vertex to research, develop and commercialize new treatments
aimed at the underlying genetic causes of human diseases, Vertex had sole authority to select genetic targets to pursue and we do not 
have control over the development of any product candidates for the selected genetic targets. In addition, under our 2019
Collaboration Agreement with Vertex, Vertex has sole authority to develop and commercialize products for the treatment of DMD and 
DM1 under the agreement (subject to our option to co-develop and co-commercialize products for the treatment of DM1).

Additionally, we are developing and preparing to commercialize CTX001 for TDT and SCD in partnership with Vertex under a

joint development and commercialization agreement, which we amended in the second quarter of 2021. Under the A&R Vertex 
JDCA, subject to the terms and conditions of such agreement, Vertex will have the right to conduct all research, development, 
manufacturing and commercialization activities relating to the specified product candidates and products (including CTX001) 
throughout the world subject to our reserved right to conduct certain activities. While we will continue to participate in certain aspects
of such activities in an observer capacity unless and to the extent otherwise agreed to by the parties, and we and Vertex have an equal 
number of representatives on the joint oversight committee and transition committee, Vertex controls the development of CTX001 or 
any future product candidates subject to the A&R Vertex JDCA.

Our lack of control over the clinical development, manufacturing, regulatory submission and commercialization activities in 
certain of our agreements with Vertex could cause delays or other difficulties in the development and commercialization of product 
candidates, which may prevent among other things, completion of intended IND filings in a timely fashion, if at all, or the completion
or delay in BLA filings. For example, there is no assurance that data obtained from our partnered CTX001 programs will indicate 

77

clinically meaningful benefit or support submission of a BLA, and we cannot be certain that data from CLIMB THAL-111 and 
CLIMB SCD-121 clinical trials will be sufficiently robust from a safety and/or efficacy perspective to support either conditional
approval or full approval. The FDA may require that we and Vertex conduct additional or larger pivotal trials before we and Vertex
can submit or obtain approval of a BLA. Furthermore, we are required to submit data relating to certain release assays designed to
confirm the quality, purity and strength (including potency) of CTX001 as a condition for completing the BLA submission. Under the 
A&R Vertex JDCA, Vertex is responsible for such clinical trials and manufacturing. If Vertex is unable to submit the required data in
a timely manner, there is the potential for further delaying the completion of our BLA submission, with the potential consequence of 
delaying any approval and commercial launch of CTX001 in the United States.

In addition, the termination of our agreements with Vertex would prevent us from receiving any milestone, royalty payments

and other benefits under that agreement, which may have a materially adverse effect on our results of operations. 

If Conflicts Arise Between Us And Our Collaborators Or Strategic Partners, These Parties May Act In A Manner Adverse To Us 

And Could Limit Our Ability To Implement Our Strategies.

If conflicts arise between our corporate or academic collaborators or strategic partners and us, the other party may act in a
manner adverse to us and could limit our ability to implement our strategies. Some of our academic collaborators and strategic 
partners are conducting multiple product development efforts within each area that is the subject of the collaboration with us. Our 
collaborators or strategic partners, however, may develop, either alone or with others, products in related fields that are competitive
with the products or potential products that are the subject of these collaborations. Competing products, either developed by the
collaborators or strategic partners or to which the collaborators or strategic partners have rights, may result in the withdrawal of 
partner support for our product candidates. 

Some of our collaborators or strategic partners could also become our competitors in the future. Our collaborators or strategic 
partners could develop competing products, preclude us from entering into collaborations with their competitors, fail to obtain timely
regulatory approvals, terminate their agreements with us prematurely, or fail to devote sufficient resources to the development and 
commercialization of products. Any of these developments could harm our product development efforts. 

Our Collaborators Or Strategic Partners May Decide To Adopt Alternative Technologies Or May Be Unable To Develop 
Commercially Viable Products With Our Technology, Which Would Negatively Impact Our Revenues And Our Strategy To Develop
These Products.

Our collaborators or strategic partners may adopt alternative technologies, which could decrease the marketability of our 
CRISPR/Cas9 gene-editing technology. Additionally, because our current collaborators or strategic partners are and we anticipate that 
any future collaborators or strategic partners will be working on more than one development project, they could choose to shift their 
resources to projects other than those they are working on with us. If they do so, this would delay our ability to test our technology and 
would delay or terminate the development of potential products based on our CRISPR/Cas9 gene-editing technology. Further, our 
collaborators and strategic partners may elect not to develop products arising out of our collaborative and strategic partnering
arrangements or to devote sufficient resources to the development, manufacturing, marketing or sale of these products. The failure to 
develop and commercialize a product candidate pursuant to our agreements with our current or future collaborators would prevent us 
from receiving future milestone and royalty payments which would negatively impact our revenues.

We May Seek To Establish Additional Collaborations And, If We Are Not Able To Establish Them On Commercially Reasonable

Terms, We May Have To Alter Our Development And Commercialization Plans.

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

We face significant competition in seeking appropriate collaborators. Whether we reach a definitive agreement for any

additional collaborations will depend, among other things, upon our assessment of the collaborator’s resources and expertise, the terms
and conditions of the proposed collaboration and the proposed collaborator’s evaluation of a number of factors. Those factors may 
include the design or results of clinical trials, the likelihood of approval by FDA or similar regulatory authorities outside the United 
States, the potential market for the subject product candidate, the costs and complexities of manufacturing and delivering such product 
candidate to patients, the potential of competing drugs, the existence of uncertainty with respect to our ownership of technology,
which can exist if there is a challenge to such ownership without regard to the merits of the challenge and industry and market 
conditions generally. The collaborator may also consider alternative product candidates or technologies for similar indications that 

78

may be available to collaborate on and whether such a collaboration could be more attractive than the one with us for our product 
candidate. The terms of any additional collaborations or other arrangements that we may establish may not be favorable to us. 

We may also be restricted under existing collaboration agreements from entering into future agreements on certain terms with 

potential collaborators. For example, we have granted exclusive rights to Vertex for certain genetic targets, and during the term of the 
collaboration agreements, we will be restricted from granting rights to other parties to use our gene-editing technology to pursue
therapies that address these genetic targets. The non-competition provisions in this agreement could limit our ability to enter into
strategic collaborations with future collaborators. 

We may not be able to negotiate additional collaborations on a timely basis, on acceptable terms, or at all. Collaborations are 

complex and time-consuming to negotiate and document. In addition, there have been a significant number of recent business 
combinations among large pharmaceutical companies that have resulted in a reduced number of potential future collaborators. If we 
are unable to negotiate and enter into new collaborations, we may have to curtail the development of the product candidate for which
we are seeking to collaborate, reduce or delay its development program or one or more of our other development programs, delay its
potential commercialization or reduce the scope of any sales or marketing activities, or increase our expenditures and undertake 
development or commercialization activities at our own expense. If we elect to increase our expenditures to fund development or 
commercialization activities on our own, we may need to obtain additional capital, which may not be available to us on acceptable
terms or at all. If we do not have sufficient funds, we may not be able to further develop our product candidates or bring them to 
market and generate product revenue. 

We Expect To Rely On Third Parties To Conduct Our Clinical Trials And Certain Aspects Of Our Preclinical Studies For Our 

Product Candidates. If These Third Parties Do Not Successfully Carry Out Their Contractual Duties, Comply With Regulatory
Requirements Or Meet Expected Deadlines, We May Not Be Able To Obtain Regulatory Approval For Or Commercialize Our Product 
Candidates And Our Business Could Be Substantially Harmed.

We expect to rely on medical institutions, clinical investigators, contract laboratories and other third parties, such as CROs, to 

conduct future clinical trials and we currently rely on third parties to conduct certain aspects of our preclinical studies for our product 
candidates. Nevertheless, we are responsible for ensuring that each of our preclinical studies and any future clinical trials we sponsor 
are conducted in accordance with the applicable protocol, legal and regulatory requirements and scientific standards and our reliance 
on CROs will not relieve us of our regulatory responsibilities. For example, we will remain responsible for ensuring that each of our 
clinical trials is conducted in accordance with the general investigational plan and protocols for the trial. Moreover, the FDA requires 
us to comply with regulations, commonly referred to as Good Clinical Practices, or GCPs, for conducting, recording, and reporting the
results of clinical trials to assure that data and reported results are credible and accurate and that the rights, integrity, and 
confidentiality of trial participants are protected. We also are required to register ongoing clinical trials and post the results of 
completed clinical trials on a government-sponsored database, ClinicalTrials.gov, within certain timeframes. Failure to do so can
result in fines, adverse publicity, and civil and criminal sanctions. For any violations of laws and regulations during the conduct of our 
preclinical studies and clinical trials, we could be subject to warning letters or enforcement action that may include civil penalties up
to and including criminal prosecution. 

We and our CROs will be required to comply with regulations, including GCPs, for conducting, monitoring, recording and 

reporting the results of preclinical studies and clinical trials to ensure that the data and results are scientifically credible and accurate 
and that the trial patients are adequately informed, among other things, of the potential risks of participating in clinical trials and their 
rights are protected. These regulations are enforced by the FDA, the Competent Authorities of the Member States of the European 
Economic Area and comparable health regulatory authorities for any drugs in clinical development. The FDA enforces GCP
regulations through periodic inspections of clinical trial sponsors, principal investigators and trial sites. If we or our CROs fail to
comply with applicable GCPs, the clinical data generated in our clinical trials may be deemed unreliable and FDA or comparable 
health regulatory authorities may require us to perform additional clinical trials before approving our marketing applications. We
cannot assure you that, upon inspection, the FDA will determine that any of our future clinical trials will comply with GCPs. In
addition, our future clinical trials must be conducted with product candidates produced in accordance with the requirements in cGMP
regulations. Our failure or the failure of our CROs to comply with these regulations may require us to repeat clinical trials, which
would delay the regulatory approval process and could also subject us to enforcement action and require significantly greater 
expenditures.

Although we intend to design the clinical trials for our product candidates, CROs will conduct all of the clinical trials. As a 
result, many important aspects of our development programs, including their conduct and timing, will be outside of our direct control.
Our reliance on third parties to conduct future preclinical studies and clinical trials will also result in less direct control over the 
management of data developed through preclinical studies and clinical trials than would be the case if we were relying entirely upon 

79

our own staff. Communicating with outside parties can also be challenging, potentially leading to mistakes as well as difficulties in
coordinating activities. Outside parties may:

•

•

•

•

•

have staffing difficulties; 

fail to comply with contractual obligations; 

experience regulatory compliance issues;

undergo changes in priorities or become financially distressed; or 

form relationships with other entities, some of which may be our competitors.

These factors may materially adversely affect the willingness or ability of third parties to conduct our preclinical studies and 
clinical trials and may subject us to unexpected cost increases that are beyond our control. If the CROs do not perform preclinical 
studies and future clinical trials in a satisfactory manner, breach their obligations to us or fail to comply with regulatory requirements,
the development, regulatory approval and commercialization of our product candidates may be delayed, we may not be able to obtain
regulatory approval and commercialize our product candidates, or our development programs may be materially and irreversibly
harmed. If we are unable to rely on preclinical and clinical data collected by our CROs, we could be required to repeat, extend the 
duration of, or increase the size of any clinical trials we conduct and this could significantly delay commercialization and require 
significantly greater expenditures. 

Our Relationships With Healthcare Providers, Physicians, And Third-party Payors Will Be Subject To Applicable Anti-

kickback, Fraud And Abuse And Other Healthcare Laws And Regulations, Which Could Expose Us To Criminal Sanctions, Civil 
Penalties, Exclusion From Government Healthcare Programs, Contractual Damages, Reputational Harm And Diminished Profits And 
Future Earnings.

Although we do not currently have any products on the market, once we begin commercializing our product candidates, if ever, 
we will be subject to additional healthcare statutory and regulatory requirements and enforcement by the U.S. federal government and 
states as well as other national, regional or local governments in other jurisdictions in which we conduct our business.

Healthcare providers, physicians and third-party payors play a primary role in the recommendation and prescription of any
product candidates that we may develop for which we obtain marketing approval. Our future arrangements with third-party payors and 
customers may expose us to broadly applicable fraud and abuse and other healthcare laws and regulations that may constrain the
business or financial arrangements and relationships through which we market, sell, and distribute our product candidates for which
we obtain marketing approval. See the section entitled “Business – Healthcare Law and Regulation.”

The provision of benefits or advantages to physicians to induce or encourage the prescription, recommendation, endorsement, 

purchase, supply, order, or use of medicinal products is prohibited in the EU. The provision of benefits or advantages to induce or 
reward improper performance generally is also governed by the national anti-bribery laws of EU Member States, and the Bribery Act 
2010 in the UK. Infringement of these laws could result in substantial fines and imprisonment. EU Directive 2001/83/EC, which is the 
EU Directive governing medicinal products for human use, further provides that, where medicinal products are being promoted to
persons qualified to prescribe or supply them, no gifts, pecuniary advantages or benefits in kind may be supplied, offered or promised 
to such persons unless they are inexpensive and relevant to the practice of medicine or pharmacy. This provision has been transposed 
into the Human Medicines Regulations 2012 and so remains applicable in the UK despite its departure from the EU.

Payments made to physicians in certain EU Member States must be publicly disclosed. Moreover, agreements with physicians 

often must be the subject of prior notification and approval by the physician’s employer, his or her competent professional 
organization, and/or the regulatory authorities of the individual EU Member States. These requirements are provided in the national 
laws, industry codes, or professional codes of conduct applicable in the EU Member States. Failure to comply with these requirements
could result in reputational risk, public reprimands, administrative penalties, fines, or imprisonment. 

Efforts to ensure that our business arrangements with third parties will comply with applicable healthcare laws and regulations 

will involve substantial costs. It is possible that governmental authorities will conclude that our business practices may not comply
with current or future statutes, regulations, or case law involving applicable fraud and abuse or other healthcare laws and regulations.
Because of the breadth of these laws and the narrowness of the statutory exceptions and safe harbors available, it is possible that some
of our business activities could be subject to challenge under one or more of such laws. If our operations, including activities that may 
be conducted by sales and marketing team we establish, are found to be in violation of any of these laws or any other governmental
regulations that may apply to us, we may be subject to significant civil, criminal, and administrative penalties, damages, fines, 
exclusion from government funded healthcare programs, such as Medicare and Medicaid, and the curtailment or restructuring of our 
operations. If any of the physicians or other providers or entities with whom we expect to do business is found to be not in compliance

80

with applicable laws, they may be subject to criminal, civil, or administrative sanctions, including exclusions from government funded 
healthcare programs. Liabilities they incur pursuant to these laws could result in significant costs or an interruption in operations,
which could have a material adverse effect on our business, financial condition, results of operations, and prospects. 

Risks Related to Manufacturing 

Gene-Editing Products Are Novel And May Be Complex And Difficult To Manufacture. We Could Experience Manufacturing 

Problems That Result In Delays In The Development Or Commercialization Of Our Product Candidates Or Otherwise Harm Our 
Business.

The manufacturing process used to produce CRISPR/Cas9-based product candidates may be complex, as they are novel and 

have not been validated for clinical and commercial production. Several factors could cause production interruptions, including 
inability to develop novel manufacturing processes, equipment malfunctions, facility contamination, raw material shortages or 
contamination, natural disasters, including the coronavirus pandemic, disruption in utility services, human error or disruptions in the 
operations of our suppliers, including acquisition of the supplier by a third party or declaration of bankruptcy. The expertise required 
to manufacture these product candidates may be unique to a particular contract manufacturing organizations, and as a result, it would 
be difficult and time consuming to find an alternative contract manufacturing organization. Failure or process defects in any of the 
interrelated systems at either our manufacturing facility, once validated, or those of our third-party manufacturers, could adversely 
impact our ability to manufacture and supply cell therapy product candidates and certain components thereof intended for research, 
clinical and, if approved, commercial production. For additional information regarding the impact of the coronavirus pandemic, please
see “Risk Factor— Our Business May Be Adversely Affected By The Ongoing Coronavirus Pandemic, Including the Emergence of 
Additional Variants.”

—

Our product candidates will require processing steps that are more complex than those required for most small molecule drugs. 

Moreover, unlike small molecules, the physical and chemical properties of biologics 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 will employ multiple steps to control the 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 
grade materials that meet FDA, the EMA or other applicable standards or specifications with consistent and acceptable production 
yields and costs. 

In addition, the FDA, the EMA and other health 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 health regulatory authorities may require that we not distribute a lot until the relevant agency authorizes its release.
Slight deviations in the manufacturing process, including those affecting quality attributes and stability, may result in unacceptable
changes in the product that could result in lot failures or product recalls. Lot failures could cause us to delay product launches or 
clinical trials and we may need to conduct product recalls, all of which could be costly to us and otherwise harm our business, 
financial condition, results of operations and prospects. Problems in our manufacturing process could restrict our ability to meet 
market demand for our products. 

We also may encounter problems hiring and retaining directly or through contract manufacturing organizations the experienced 
scientific, quality assurance, quality control and manufacturing personnel needed to operate our manufacturing processes, which could 
result in delays in production or difficulties in maintaining compliance with applicable regulatory requirements. Any problems in our 
supply chain, manufacturing process or facilities could result in delays in planned clinical trials and increased costs, and could 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. Problems in our manufacturing process could restrict our 
ability to meet potential future market demand for products.

The Manufacturing Facilities For Our Product Candidates Are Subject To Rigorous Regulations And Failure To Obtain Or 

Maintain Regulatory Approvals Or Operate In Line With Established cGMPs And International Best Practices Could Delay Or 
Impair Our Ability To Commercialize Our Product Candidates.

We and the third-party manufacturers of our product candidates are subject to applicable cGMPs prescribed by the FDA and 
other rules and regulations prescribed by the EMA and other regulatory authorities. To obtain FDA and EMA approval for our product 
candidates in the United States and Europe, we need to undergo strict pre-approval inspections of our or our third-party manufacturing 
facilities. When inspecting our or our contractors' manufacturing facilities, the FDA or EMA might cite cGMP deficiencies, both 

81

minor and significant, which we may not be required to disclose. Remediating deficiencies can be laborious and costly and consume 
significant periods of time. Moreover, if the FDA or EMA notes deficiencies as a result of its inspection, it will generally reinspect the
facility to determine if the deficiency has been remediated to its satisfaction. The FDA or EMA may note further deficiencies as a
result of its reinspection, either related to the previously identified deficiency or otherwise. If we or the manufacturers of our product 
candidates cannot satisfy the FDA and EMA as to compliance with cGMP in a timely basis, marketing approval for our product 
candidates could be seriously delayed, which in turn would delay commercialization of our product candidates.

We Are Subject To Regulatory And Operational Risks Associated With Our Internal Manufacturing Facility And At Those Of 

Our Third-party Contract Manufacturing Partners.

In the fourth quarter of 2021, we completed construction of a new cell therapy manufacturing facility in Framingham,

Massachusetts, that, among other things, once validated, will be capable of supporting research, clinical and commercial production of 
our cell therapy product candidates and certain components thereof for certain of our programs. We have begun the regulatory
validation activities required to bring this facility into cGMP compliance and to enable us to produce cell therapy product supply 
suitable for human administration in the future. We can provide no assurances that we will be able to build out our internal 
manufacturing capacity or achieve required validation of our Framingham facility. While the design of the facility is based on current 
standards for biotechnology facilities, it has not yet been reviewed or pre-approved by any regulatory agency, nor has the facility been
inspected by any regulatory agency such as the FDA. We could incur delays in implementing the full operational state of the facility, 
causing delays to clinical supply or extended use of our third-party contract manufacturing partners, resulting in unplanned expenses.
In constructing our facility in Framingham, Massachusetts, we have incurred substantial expenditures, and expect to incur significant 
additional expenditures in validating and operating the facility in the future.

We Expect To Rely On Third Parties To Manufacture Our Clinical Product Supplies, And We Intend To Rely On Third Parties 

For At Least A Portion Of The Manufacturing Process Of Our Product Candidates. Our Business Could Be Harmed If The Third 
Parties Experience Supply Chain Shortages, Fail To Provide Us With Sufficient Quantities Of Product Inputs Or Fail To Do So At 
Acceptable Quality Levels Or Prices.

Although we have completed construction of our facility in Framingham, Massachusetts, we have not yet completed regulatory 

validation activities and we do not own any facility that currently may be used as our clinical-scale manufacturing and processing
facility and must rely on outside vendors to manufacture supplies and process our product candidates in connection with any clinical 
trial we undertake of such product candidates. We have not yet caused any product candidates to be manufactured or processed on a 
commercial scale and may not be able to do so for any of our product candidates. We will make changes as we work to optimize the 
manufacturing process, and we cannot be sure that even minor changes in the process will result in therapies that are safe and 
effective. 

The facilities used to manufacture our product candidates must be evaluated by the FDA, or other health regulatory agencies in 
other jurisdictions, pursuant to inspections that will be conducted after we submit an application to the FDA or other health regulatory 
agencies. We will not control the manufacturing process of, and will be completely dependent on, our contract manufacturing partners
for compliance with regulatory requirements, known as cGMP requirements, for manufacture of our product candidates. If our 
contract manufacturers cannot successfully manufacture material that conforms to our specifications and the strict regulatory 
requirements of the FDA or other regulatory authorities, they will not be able to secure and/or maintain regulatory approval for their 
manufacturing facilities or regulatory authorities may cite them for deficiencies, and we may not be able to obtain or may be delayed 
in obtaining regulatory approval from the FDA or other regulatory authorities for our product candidates. In addition, we have no 
direct control over the ability of our contract manufacturers to maintain adequate quality control, quality assurance and qualified 
personnel. If the FDA or a comparable health regulatory authority does not approve these facilities or cites these facilities for 
deficiencies for the manufacture of our product candidates or if it withdraws any such approval or cites deficiencies in the future, we 
may need to find alternative manufacturing facilities, which would significantly impact our ability to develop, obtain regulatory
approval for or market our product candidates, if approved. In addition, if our contract manufacturers are unable to timely perform or 
become distracted as a result of actions taken by the FDA or a comparable health regulatory authority or as a result of the coronavirus 
pandemic, we may experience manufacturing delays or may need to find alternative manufacturing facilities, which in each case, 
would significantly impact our ability to develop, obtain regulatory approval for or market our product candidates, if approved.

Our reliance on a limited number of third-party manufacturers exposes us to a number of risks, including the following:

•

•

we may be unable to identify manufacturers on acceptable terms or at all because the number of potential manufacturers is 
limited;

a new manufacturer would have to be educated in, or develop substantially equivalent processes for, the production of our 
product candidates;

82

•

•

•

•

•

•

•

•

•

•

a change in manufacturers or certain changes in manufacturing processes/procedures will require that we conduct a 
manufacturing comparability study to verify that any new manufacturer or manufacturing process/procedures will produce
our product candidate according to the specifications previously submitted to the FDA or other regulatory authority, and 
such study may be unsuccessful;

our third-party manufacturers might be unable to timely manufacture our product candidates or produce the quantity and 
quality required to meet our clinical and commercial needs, if any;

contract manufacturers may not be able to execute our manufacturing procedures and other logistical support requirements
appropriately;

our contract manufacturers may not perform as agreed, may not devote sufficient resources to our product candidates or 
may not remain in the contract manufacturing business for the time required to supply our clinical trials;

manufacturers are subject to ongoing periodic unannounced inspection by the FDA and corresponding state agencies to 
ensure strict compliance with cGMP and other government regulations and corresponding foreign standards and we have 
no control over third-party manufacturers’ compliance with these regulations and standards;

we may not own, or may have to share, the intellectual property rights to any improvements made by our third-party
manufacturers in the manufacturing process for our product candidates;

our third-party manufacturers could breach or terminate their agreements with us;

raw materials and components used in the manufacturing process, particularly those for which we have no other source or 
supplier, may not be available or may not be suitable or acceptable for use due to material or component defects;

our contract manufacturers and critical reagent suppliers may be subject to inclement weather, as well as natural or man-
made disasters; and

our contract manufacturers may have unacceptable or inconsistent product quality success rates and yields, and we have
no direct control over our contract manufacturers’ ability to maintain adequate quality control, quality assurance and 
qualified personnel.

Each of these risks could delay or prevent the completion of our clinical trials or the approval of any of our product candidates
by the FDA, result in higher costs or adversely impact commercialization of our product candidates, if approved. In addition, we will 
rely on third parties to perform certain specification tests on our product candidates prior to delivery to patients. If these tests are not 
appropriately done and test data are not reliable, patients could be put at risk of serious harm and the FDA could place significant 
restrictions on our company until deficiencies are remedied.

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

Our Future Success Depends On Our Ability To Retain Key Executives And To Attract, Retain And Motivate Qualified 

Personnel. 

We are highly dependent on the research and development, clinical, commercial and business development expertise of Dr. 
Samarth Kulkarni, our Chief Executive Officer, as well as the other principal members of our management, scientific and clinical 
team. Although we have entered into employment agreements with our executive officers, each of them may terminate their 
employment with us at any time. We do not maintain “key person” insurance for any of our executives or other employees. In 
addition, we rely on consultants and advisors, including scientific and clinical advisors, to assist us in formulating our research and 
development and commercialization strategy. Our consultants and advisors may be employed by employers other than us and may
have commitments under consulting or advisory contracts with other entities that may limit their availability to us. The loss of the 
services of our executive officers or other key employees or consultants could impede the achievement of our research, development 
and commercialization objectives and seriously harm our ability to successfully implement our business strategy. If we are unable to
retain high quality personnel, our ability to pursue our growth strategy will be limited.

We will also need to recruit and retain qualified scientific, clinical and commercial personnel as we advance the development of 

our product candidates and product pipeline. We may be unable to hire, train, retain or motivate these key personnel on acceptable 
terms given the competition among numerous pharmaceutical and biotechnology companies for similar personnel. We also experience 
competition for the hiring of scientific, clinical and commercial personnel from universities and research institutions. Failure to 
succeed in clinical trials may make it more challenging to recruit and retain qualified scientific personnel. 

83

Swiss Corporate Governance With Respect To Executive Compensation May Affect Our Business.

The Swiss Federal Council Ordinance Against Excessive Compensation at Public Companies, or the Ordinance, among other 

things, (a) requires a binding shareholder “say on pay” vote with respect to the compensation of members of our executive 
management and board of directors, (b) generally prohibits the making of severance, advance, transaction premiums and similar 
payments to members of our executive management and board of directors and (c) requires companies to specify various 
compensation-related matters in their articles of association, thus requiring them to be approved by a shareholders’ vote. At our annual 
general meetings, our shareholders are required to approve the maximum aggregate compensation of our board of directors and our 
executive management team. The Ordinance further provides for criminal penalties against directors and members of executive 
management in case of non-compliance with certain of its requirements. The Ordinance may negatively affect our ability to attract and 
retain executive management and members of our board of directors.

We Will Need To Develop And Expand Our Company, And We May Encounter Difficulties In Managing This Development And 

Expansion, Which Could Disrupt Our Operations.

As of December 31, 2021, we had 473 full-time employees and we expect to continue to increase our number of employees and 

the scope of our operations in 2022 and beyond as we seek to advance development and if successful, commercialization, of our 
product candidates. To manage our anticipated development and expansion, we must continue to implement and improve our 
managerial, operational and financial systems, expand our facilities and continue to recruit and train additional qualified personnel.
Also, our management may need to divert a disproportionate amount of its attention away from its day-to-day activities and devote a
substantial amount of time to managing these expansion activities. Due to our limited resources, we may not be able to effectively
manage the expansion of our operations or recruit and train additional qualified personnel. This may result in weaknesses in our 
infrastructure, give rise to operational mistakes, loss of business opportunities, loss of employees and reduced productivity among
remaining employees. The physical expansion of our operations may lead to significant costs and may divert financial resources from 
other projects, such as the development of our product candidates. If our management is unable to effectively manage our expected 
expansion, our expenses may increase more than expected, our ability to generate or increase our revenue could be reduced and we 
may not be able to implement our business strategy. Our future financial performance and our ability to commercialize our product 
candidates, if approved, and compete effectively will depend, in part, on our ability to effectively manage the future development and 
expansion of our company. 

Our Employees, Principal Investigators, Consultants And Commercial 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, consultants, commercial partners, and principal 

investigators. Misconduct by these parties could include intentional failures to comply with FDA regulations or the regulations 
applicable in the EU and other jurisdictions, provide accurate information to the FDA, the European Commission, and other regulatory 
authorities, comply with healthcare fraud and abuse laws and regulations in the United States and in other jurisdictions, report 
financial information or data accurately or disclose unauthorized activities to us. In particular, sales, marketing and business
arrangements in the healthcare industry are subject to extensive laws and regulations intended to prevent fraud, misconduct, 
kickbacks, self-dealing and other abusive practices. These laws and regulations restrict or prohibit a wide range of pricing, 
discounting, marketing and promotion, sales commission, customer incentive programs, and other business arrangements. Such
misconduct also could involve the improper use of information obtained in the course of clinical trials or interactions with the FDA or 
other regulatory authorities, which could result in regulatory sanctions and cause serious harm to our reputation. We have 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 government investigations or other actions or lawsuits stemming from a failure to comply with these laws or 
regulations. Additionally, we are subject to the risk that a person could allege such fraud or other misconduct, even if none occurred. If 
any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, those actions could 
have a significant impact on our business, financial condition, results of operations, and prospects, including the imposition of civil,
criminal and administrative penalties, damages, monetary fines, possible exclusion from participation in Medicare, Medicaid and other 
federal healthcare programs, contractual damages, reputational harm, diminished profits and future earnings and curtailment of our 
operations, any of which could adversely affect our ability to operate our business and our results of operations. 

84

If We Fail To Comply With Environmental, Health And Safety Laws And Regulations, We Could Become Subject To Fines Or 

Penalties Or Incur Costs That Could Harm Our Business. 

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

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

Product Liability Lawsuits Against Us Could Cause Us To Incur Substantial Liabilities And Could Limit Commercialization Of 

Any Product Candidates That We May Develop. 

We will face an inherent risk of product liability exposure related to the testing of our product candidates in human clinical trials

and will face an even greater risk if we commercially sell any product candidates that we may develop. If we cannot successfully
defend ourselves against claims that our product candidates caused injuries, we could incur substantial liabilities. Regardless of merit 
or eventual outcome, liability claims may result in: 

•

•

•

•

•

•

•

decreased demand for any product candidates that we may develop; 

injury to our reputation and significant negative media attention; 

withdrawal of clinical trial participants; 

significant costs to defend the related litigation; 

substantial monetary awards to trial participants or patients; 

loss of revenue; and 

the inability to commercialize any product candidates that we may develop. 

Although we have obtained product liability insurance coverage, it may not be adequate to cover all liabilities that we may 
incur. Further, we anticipate that we will need to increase our insurance coverage if we successfully commercialize any product 
candidate. Insurance coverage is increasingly expensive. We may not be able to maintain insurance coverage at a reasonable cost or in
an amount adequate to satisfy any liability that may arise.

If We Fail To Establish And Maintain Proper And Effective Internal Control Over Financial Reporting, Our Operating Results 

And Our Ability To Operate Our Business Could Be Harmed.

Ensuring that we have adequate internal financial and accounting controls and procedures in place so that we can produce 
accurate financial statements on a timely basis is a costly and time-consuming effort that needs to be re-evaluated frequently. We are 
required to comply with the requirements of The Sarbanes-Oxley Act of 2002, which requires that we maintain effective internal
control over financial reporting and disclosure controls and procedures. In particular, we must perform system and process evaluation, 
document our controls and perform testing of our key control over financial reporting to allow management and our independent 
public accounting firm to report on the effectiveness of our internal control over financial reporting, as required by Section 404 of the
Sarbanes-Oxley Act. Our testing, or the subsequent testing by our independent public accounting firm, may reveal deficiencies in our 
internal control over financial reporting that are deemed to be material weaknesses. If we are not able to comply with the requirements 
of Section 404 in a timely manner, or if we or our accounting firm identify deficiencies in our internal control over financial reporting
that are deemed to be material weaknesses, the market price of our stock would likely decline and we could be subject to lawsuits,
sanctions or investigations by regulatory authorities, which would require additional financial and management resources. 

We continue to invest in more robust technology and in more resources in order to manage those reporting requirements. 
Implementing the appropriate changes to our internal controls may distract our officers and employees, result in substantial costs if we
implement new processes or modify our existing processes and require significant time to complete. Any difficulties or delays in 
implementing these controls could impact our ability to timely report our financial results. In addition, we currently rely on a manual 
process in some areas which increases our exposure to human error or intervention in reporting our financial results. For these reasons,
we may encounter difficulties in the timely and accurate reporting of our financial results, which would impact our ability to provide

85

our investors with information in a timely manner. As a result, our investors could lose confidence in our reported financial 
information, and our stock price could decline. 

In addition, any such changes do not guarantee that we will be effective in maintaining the adequacy of our internal controls, 

and any failure to maintain that adequacy could prevent us from accurately reporting our financial results. 

We May Fail To Comply With Evolving European And Other Privacy Laws.

We currently conduct clinical trials in the EEA. As a result, we are subject to additional privacy laws. The GDPR became 
effective on May 25, 2018, and deals with the processing of personal data and on the free movement of such data. The GDPR imposes
a broad range of strict requirements on companies subject to the GDPR, including requirements relating to having legal bases for 
processing personal information relating to identifiable individuals and transferring such information outside the EEA, including to the 
United States, providing details to those individuals regarding the processing of their personal information, keeping personal 
information secure, having data processing agreements with third parties who process personal information, responding to individuals’
requests to exercise their rights in respect of their personal information, reporting security breaches involving personal data to the 
competent national data protection authority and affected individuals, appointing data protection officers, conducting data protection 
impact assessments, and record-keeping. The GDPR increases substantially the penalties to which we could be subject in the event of 
any non-compliance, including fines of up to €10,000,000 or up to 2% of our total worldwide annual turnover for certain
comparatively minor offenses, or up to €20,000,000 or up to 4% of our total worldwide annual turnover for more serious offenses. 

In particular, national laws of Member States of the EU have implemented national laws which may partially deviate from the 
GDPR and impose different and more restrictive obligations from country to country, so that we do not expect to operate in a uniform
legal landscape in the EU. Also, as it relates to processing and transfer of genetic data, the GDPR specifically allows EU Member 
State nations to enact laws that impose additional and more specific requirements or restrictions, and European laws have historically 
differed quite substantially in this field, leading to additional uncertainty. 

In addition, further to the UK’s exit from the EU on January 31, 2020, the GDPR ceased to apply in the UK at the end of the 

transition period on December 31, 2020. However, as of January 1, 2021, the UK’s European Union (Withdrawal) Act 2018
incorporated the GDPR (as it existed on December 31, 2020 but subject to certain UK specific amendments) into UK law, referred to
as the UK GDPR. The UK GDPR and the UK Data Protection Act 2018 set out the UK’s data protection regime, which is independent 
from but aligned to the EU’s data protection regime. Non-compliance with the UK GDPR may result in monetary penalties of up to 
£17.5 million or 4% of worldwide revenue, whichever is higher. Although the UK is regarded as a third country under the EU’s
GDPR, the European Commission (“EC”) has now issued a decision recognizing the UK as providing adequate protection under the
EU GDPR and, therefore, transfers of personal data originating in the EU to the UK remain unrestricted. Like the EU GDPR, the UK 
GDPR restricts personal data transfers outside the UK to countries not regarded by the UK as providing adequate protection. The UK 
government has confirmed that personal data transfers from the UK to the EEA remain free flowing.

The EU-U.S. and the Swiss-U.S. Privacy Shield frameworks allowed U.S. companies that self-certify to the U.S. Department of 
Commerce and publicly commit to comply with specified requirements to import personal data from the EU and Switzerland. In 2020,
the Court of Justice of the EU ruled that the EU-U.S. Privacy Shield is an invalid transfer mechanism, which was one of the primary 
mechanisms used by U.S. companies to import personal information from Europe in compliance with the GDPR’s cross-border data 
transfer restrictions, and raised questions about whether the European Commission’s Standard Contractual Clauses, or SCCs, one of 
the primary alternatives to the Privacy Shield, can lawfully be used for personal information transfers from Europe to the United 
States or most other countries. Similarly, the Swiss Federal Data Protection and Information Commissioner has opined that the Swiss-
U.S. Privacy Shield is inadequate for transfers of data from Switzerland to the U.S. and the UK Information Commissioner’s Office 
has stated that the Privacy Shield framework is inadequate for transfers from the UK to the U.S. Furthermore, on June 4, 2021, the
European Commission issued new forms of standard contractual clauses for data transfers from controllers or processors in the EEA 
(or otherwise subject to the GDPR) to controllers or processors established outside the EEA. The new forms of standard contractual 
clauses have replaced the standard contractual clauses that were adopted previously under the Data Protection Directive. We will be 
required to transition to the new forms of standard contractual clauses and doing so may require significant effort and cost. The new 
standard contractual clauses may also impact our business as companies based in Europe may be reluctant to utilize the new clauses to 
legitimize transfers of personal information to third countries given the burdensome requirements of transfer impact assessments and 
the substantial obligations that the new standard contractual clauses impose upon exporters. If we are investigated by a European data 
protection authority, we may face fines and other penalties. Any such investigation or charges by European data protection authorities
could have a negative effect on our existing business and on our ability to attract and retain new clients or pharmaceutical partners. 
We may also experience hesitancy, reluctance, or refusal by European or multi-national clients or pharmaceutical partners to continue 
to use our products due to the potential risk exposure as a result of the current (and, in particular, future) data protection obligations
imposed on them by certain data protection authorities in interpretation of current law, including the GDPR. Such clients or 
pharmaceutical partners may also view any alternative approaches to compliance as being too costly, too burdensome, too legally

86

uncertain, or otherwise objectionable and therefore decide not to do business with us. Any of the foregoing could materially harm our 
business, prospects, financial condition, and results of operations.

Our Internal Computer Systems, Or Those Of Our Collaborators Or Other Contractors Or Consultants, May Fail Or Suffer 

Security Breaches, Which Could Result In A Material Disruption Of Our Product Development Programs.

Our internal computer systems and those of our current and any future collaborators and other contractors or consultants are

vulnerable to damage from computer viruses, unauthorized access, natural disasters, terrorism, war and telecommunication and 
electrical failures. While we have not experienced any such material system failure, accident or security breach to date, if such an
event were to occur and cause interruptions in our operations, it could result in a disruption of our development programs and our 
business operations, whether due to a loss of our trade secrets or other proprietary information or other similar disruptions. For 
example, the loss of clinical trial data from future clinical trials could result in delays in our regulatory approval efforts and 
significantly increase our costs to recover or reproduce the data. To the extent that any disruption or security breach were to result in a
loss of, or damage to, our data or applications, or inappropriate disclosure of confidential or proprietary information, we could incur 
liability, our competitive position could be harmed and the further development and commercialization of our product candidates
could be delayed.

We could be subject to risks caused by misappropriation, misuse, leakage, falsification or intentional or accidental release or 

loss of information maintained in the information systems and networks of our company and our vendors, including personal 
information of our employees and study subjects, and company and vendor confidential data. In addition, outside parties may attempt 
to penetrate our systems or those of our vendors or fraudulently induce our personnel or the personnel of our vendors to disclose
sensitive information in order to gain access to our data and/or systems. We may experience threats to our data and systems, including 
malicious codes and viruses, phishing and other cyber-attacks. The number and complexity of these threats continue to increase over 
time. If a material breach of our information technology systems or those of our vendors occurs, the market perception of the
effectiveness of our security measures could be harmed and our reputation and credibility could be damaged. We could be required to
expend significant amounts of money and other resources to repair or replace information systems or networks. In addition, we could 
be subject to regulatory actions and/or claims made by individuals and groups in private litigation involving privacy issues related to 
data collection and use practices and other data privacy laws and regulations, including claims for misuse or inappropriate disclosure 
of data, as well as unfair or deceptive practices. Although we develop and maintain systems and controls designed to prevent these
events from occurring, and we have a process to identify and mitigate threats, the development and maintenance of these systems,
controls and processes is costly and requires ongoing monitoring and updating as technologies change and efforts to overcome
security measures become increasingly sophisticated. Moreover, despite our efforts, the possibility of these events occurring cannot be 
eliminated entirely. As we outsource more of our information systems to vendors, engage in more electronic transactions with payors 
and patients, and rely more on cloud-based information systems, the related security risks will increase and we will need to expend 
additional resources to protect our technology and information systems. In addition, there can be no assurance that our internal 
information technology systems or those of our third-party contractors, or our consultants’ efforts to implement adequate security and 
control measures, will be sufficient to protect us against breakdowns, service disruption, data deterioration or loss in the event of a 
system malfunction, or prevent data from being stolen or corrupted in the event of a cyberattack, security breach, industrial espionage
attacks or insider threat attacks which could result in financial, legal, business or reputational harm.

Our Business Is Subject To Economic, Political, Regulatory And Other Risks Associated With International Operations.

Our business is subject to risks associated with conducting business internationally. We and a number of our suppliers and 
collaborative and clinical study relationships are located outside the United States. Accordingly, our future results could be harmed by 
a variety of factors, including: 

•

•

•

•

•

•

•

•

•

economic weakness, including inflation, or political instability in particular non-U.S. economies and markets; 

differing regulatory requirements for drug approvals in non-U.S. countries;

potentially reduced protection for intellectual property rights; 

difficulties in compliance with non-U.S. laws and regulations; 

changes in non-U.S. regulations and customs, tariffs and trade barriers; 

changes in non-U.S. currency exchange rates and currency controls; 

changes in a specific country’s or region’s political or economic environment; 

trade protection measures, import or export licensing requirements or other restrictive actions by U.S. or non-U.S.
governments;

negative consequences from changes in tax laws;

87

•

•

•

•

•

•

compliance with tax, employment, immigration and labor laws for employees living or traveling outside the United States; 

workforce uncertainty in countries where labor unrest is more common than in the United States; 

difficulties associated with staffing and managing international operations, including differing labor relations; 

production shortages resulting from any events affecting raw material supply or manufacturing capabilities outside the 
United States;

business interruptions resulting from geo-political actions, including war and terrorism, or natural disasters including 
floods and fires; and

adverse effects and instability in global financial markets, political institutions and regulatory agencies resulting from the 
United Kingdom’s June 23, 2016 vote to leave the EU, subsequent invocation of Article 50 of the Lisbon Treaty on March 
29, 2017, and the United Kingdom is formally leaving the EU on January 31, 2020. 

Our Business And Operations May Be Negatively Impacted By The United Kingdom’s Withdrawal From The EU

On June 23, 2016, the UK held a referendum in which a majority of the eligible members of the electorate voted to leave the 

EU, commonly referred to as Brexit. The UK formally left the EU on January 31, 2020, however there was an initial transition period 
until December 31, 2020 during which EU rules and legislation continued to apply. The UK and EU have signed a EU-UK Trade and 
Cooperation Agreement, or the TCA, which became provisionally applicable on January 1, 2021 and has been formally applicable 
since May 1, 2021. The TCA includes specific provisions concerning pharmaceuticals, which include the mutual recognition of Good 
Manufacturing Practice, or GMP, inspections of manufacturing facilities for medicinal products and GMP documents issued, but does
not foresee wholesale mutual recognition of UK and EU pharmaceutical regulations. At present, Great Britain has implemented EU 
legislation on the marketing, promotion and sale of medicinal products through the Human Medicines Regulations 2012 (as amended) 
(under the Northern Ireland Protocol, the EU regulatory framework will continue to apply in Northern Ireland). The regulatory regime 
in Great Britain therefore currently aligns with EU regulations, however it is possible that these regimes will diverge in future now
that Great Britain’s regulatory system is independent from the EU and the TCA does not provide for mutual recognition of UK and 
EU pharmaceutical legislation. It remains to be seen how Brexit will impact regulatory requirements for medicinal products and 
devices in the UK in the long-term.

Since the expiry of the transition period, Great Britain is no longer covered by centralized marketing authorizations (under the 
Northern Ireland Protocol, centralized marketing authorizations will continue to be recognized in Northern Ireland). For a period of 
two years from January 1, 2021, the Medicines and Healthcare products Regulatory Agency, or MHRA, the UK medicines regulator, 
may rely on a decision taken by the European Commission on the approval of a new marketing authorization in the centralized 
procedure, in order to more quickly grant a new Great Britain marketing authorization. A separate application will, however, still be
required. Any new divergent regulations in Great Britain and the EU could add time and expense to the conduct of our business, as
well as the process by which our products receive regulatory approval in the UK, the EU and elsewhere. Any of these longer-term 
effects of Brexit, and others we cannot anticipate, could negatively impact our business and results of operations. In addition, such a
withdrawal from the EU is unprecedented, and it is unclear how the restrictions on the UK’s access to the European single market for 
goods, capital, services and labor within the EU, or single market, and the wider commercial, legal and regulatory environment, will 
impact our future operations (including business activities conducted by third parties and contract manufacturers on our behalf) and 
clinical activities (including, without limitation, clinical activities for CTX001) in the UK. Our UK operations support our current and 
future operations and clinical activities (including, without limitation, clinical activities for CTX001) in other countries in the EU and 
European Economic Area, or EEA, and these operations and clinical activities could be disrupted by the longer term effects of Brexit.

Our Business Operations Have a Substantial International Footprint and We May Further Expand In The Future, Which

Presents Challenges In Managing Our Business Operations.

We are headquartered in Zug, Switzerland and have offices in the United States and the United Kingdom. In addition, we may 

expand our international operations into other countries in the future. While we have acquired significant management and other 
personnel with substantial experience, conducting our business in multiple countries subjects us to a variety of risks and complexities
that may materially and adversely affect our business, results of operations, financial condition and growth prospects, including,
among other things:

•

•

•

the increased complexity and costs inherent in managing international operations;

diverse regulatory, financial and legal requirements, and any future changes to such requirements, in one or more 
countries where we are located or do business;

country-specific tax, labor and employment laws and regulations;

88

•

•

•

•

challenges inherent in efficiently managing employees in diverse geographies, including the need to adapt systems,
policies, benefits and compliance programs to differing labor and other regulations;

liabilities for activities of, or related to, our international operations or product candidates;

changes in currency rates; and

regulations relating to data security and the unauthorized use of, or access to, commercial and personal information.

We continue to expand our operations, and our corporate structure and tax structure is complex. In connection with our current 

and future potential partnerships, we are actively engaged in developing and applying technologies and intellectual property with a
view toward commercialization of products globally, often with commercialization partners. In connection with those activities, we
already have and will likely continue to engage in complex cross-border and global transactions involving our technology, intellectual 
property and other assets, between us and other entities such as partners and licensees, and between us and our subsidiaries. Such
cross-border and global arrangements are both difficult to manage and can potentially give rise to complexities in areas such as tax
treatment, particularly since we are subject to multiple tax regimes and different tax authorities can also take different views from each 
other, even as regards the same cross-border transaction or arrangement. There can be no assurance that we will effectively manage
this increased complexity without experiencing operating inefficiencies, control deficiencies or tax liabilities. Significant management 
time and effort is required to effectively manage the increased complexity of our company, and our failure to successfully do so could 
have a material adverse effect on our business, financial condition, results of operations and growth prospects.

Risks Related to Intellectual Property 

If We Are Unable To Obtain Or Protect Intellectual Property Rights Related to Our Proprietary Gene-Editing Technology And 

Product Candidates, We May Not Be Able To Compete Effectively In Our Markets. 

Our success depends in large part on our ability to obtain and maintain proprietary or intellectual property protection in the

United States and other jurisdictions with respect to our CRISPR/Cas9 platform technology and any proprietary product candidates
and technology we develop. We rely upon a combination of intellectual property rights, including patent rights, trade secret protection
and confidentiality agreements to protect the intellectual property related to our gene-editing technology and product candidates.
Presently we have rights to certain intellectual property, through licenses from third parties and under patent rights that we own, to 
develop our gene-editing technology and/or product candidates. For example, through our 2014 exclusive license with Dr. 
Charpentier, we exclusively license certain rights to a worldwide patent portfolio, including more than eighty-five (85) granted or 
allowed patents, as well as pending patent applications, which covers various aspects of our genome editing platform technology,
including, for example, compositions of matter, including additional CRISPR/TRACR/Cas9 complexes, and methods of use, including 
their use in targeting or cutting DNA. We refer to this worldwide patent portfolio as the “Patent Portfolio”. In addition, we have filed 
numerous patent applications covering our product candidates, which cover various aspects of our product candidates, including, for 
example, compositions of matter, as well as methods of making and using.

We seek to protect our proprietary position by in-licensing intellectual property to cover our platform technology and filing
patent applications in the United States and in other jurisdictions related to our technologies and product candidates that are important 
to our business. We also rely on trade secrets, know-how and continuing technological innovation to develop and maintain our 
proprietary and intellectual property position. If we or our licensors are unable to obtain or maintain patent protection with respect to
our CRISPR/Cas9 platform technology and any proprietary products and technology we develop, our business, financial condition, 
results of operations and prospects could be materially harmed. 

However, the strength of patents in the biotechnology and pharmaceutical field generally, and the genome-editing field in 

particular, involves complex legal and scientific questions and can be uncertain and we cannot offer any assurances about which, if 
any, patent rights that we own or in-license will issue, the breadth of any such patent rights or whether any issued patents will be 
found invalid and unenforceable or will be threatened by third parties. For example, the scope of patent protection that will be
available to us in the United States and in other countries is uncertain. Changes in either the patent laws or their interpretation in the 
United States and other countries may diminish our ability to protect our intellectual property, obtain, maintain, defend and enforce
our intellectual property rights and, more generally, could affect the value of our intellectual property or narrow the scope of our 
owned and in-licensed patents. With respect to both in-licensed and owned intellectual property, we cannot predict whether the patent 
applications we and our licensors are currently pursuing will issue as patents in any particular jurisdiction or whether the claims of any 
issued patents will provide sufficient protection from competitors, or if any such patents will be found invalid, unenforceable or not 
infringed if challenged by our competitors.

The patent prosecution process is expensive, time-consuming, and complex, and we may not be able to file, prosecute, maintain,

enforce, or license all necessary or desirable patent applications at a reasonable cost or in a timely manner. It is also possible that we 

89

will fail to identify patentable aspects of our research and development output in time to obtain patent protection. Although we enter 
into non-disclosure and confidentiality agreements with parties who have access to confidential or patentable aspects of our research
and development output, such as our employees, corporate collaborators, outside scientific collaborators, CROs, contract 
manufacturers, consultants advisors, and other third parties, any of these parties may breach the agreements and disclose such output 
before a patent application is filed, thereby jeopardizing our ability to seek patent protection. In addition, numerous U.S. and foreign
issued patents and pending patent applications owned by third parties exist in the fields in which we are developing our gene-editing
technology and/or product candidates. It is possible that we have failed to identify relevant third-party patents or applications. 
Furthermore, publications of discoveries in the scientific literature often lag behind the actual discoveries and patent applications in
the United States and other jurisdictions are typically not published until 18 months after filing, or in some cases not at all. Therefore, 
we cannot know with any degree of certainty whether the inventors of our licensed patents and applications were the first to make the
inventions claimed in our owned or any licensed patents or pending patent applications, or that we were the first to file for patent 
protection of such inventions. Moreover, there is no assurance that all of the potentially relevant prior art relating to our owned and in-
licensed patents and patent applications has been found, which can invalidate a patent or prevent a patent from issuing from a pending
patent application.

The ultimate outcome of any pending or allowed patent application or granted patent is uncertain and the coverage claimed in a 

patent application can be significantly reduced before the patent is issued, and its scope can be reinterpreted after issuance. Even if 
patent applications we license or own currently in the future issue as patents, they may not issue in a form that will provide us with
any meaningful protection, prevent competitors or other third parties from competing with us, or otherwise provide us with any
competitive advantage. 

Additionally, the issuance of a patent is not conclusive as to its inventorship, scope, validity or enforceability and our owned and 

in-licensed patents may be challenged in the courts or patent offices in the United States and in other jurisdictions. There is a 
substantial amount of litigation as well as administrative proceedings for challenging patents, including interference, derivation,
reexamination, and other post-grant proceedings before the USPTO and oppositions and other comparable proceedings in foreign
jurisdictions, involving patents and other intellectual property rights in the biotechnology and pharmaceutical industries, and we
expect this to be true for the CRISPR/Cas9 space as well. See Risk Factor - Third-party claims of intellectual property infringement 
against us, our licensors or our collaborators may prevent or delay our product discovery and development efforts for more 
information. Such challenges may result in loss of exclusivity or freedom to operate or in patent claims being narrowed, revoked, 
invalidated or held unenforceable, in whole or in part, which could limit our ability to practice the invention or stop others from using
or commercializing similar or identical technology and products, or limit the duration of the patent protection of our technology and 
products. Given the amount of time required for the development, testing and regulatory review of new product candidates, patents 
protecting such candidates might expire before or shortly after such candidates are commercialized. As a result, our owned and in-
licensed patent portfolio may not provide us with sufficient rights to exclude others from commercializing products similar or identical 
to ours.

Competitors may also claim that they invented the inventions claimed in such issued patents or patent applications prior to our 

inventors, or may have filed patent applications before our inventors did. A competitor may also claim that our products and 
technology infringe its patents and that we therefore cannot practice our technology as claimed under our patent applications, if issued.
An adverse determination in any such claim may result in our inability to manufacture or commercialize products without infringing
third-party patent rights. Competitors may also contest our patents, if issued, by showing that the invention was not patent-eligible,
was not novel, was obvious or that the patent claims failed any other requirement for patentability. An adverse determination in any 
such submission, proceeding or litigation could reduce the scope of, or invalidate, our patent rights or allow third parties to 
commercialize our technology or products and compete directly with us, without payment to us. 

Moreover, we, or one of our licensors, may have to participate in additional interference proceedings declared by the USPTO to
determine priority of invention or in post-grant challenge proceedings, such as oppositions in a non-U.S. patent office, that challenge
priority of invention or other features of patentability. Such challenges may result in loss of patent rights, loss of exclusivity or 
freedom to operate, or in patent claims being narrowed, revoked, invalidated or held unenforceable, in whole or in part, which could 
limit our ability to stop others from using or commercializing similar or identical technology and products, or limit the duration of the 
patent protection of our technology and product candidates. Such proceedings also may result in substantial cost and require 
significant time from our scientists and management, even if the eventual outcome is favorable to us.

Further, even if they are unchallenged, our owned and in-licensed patents and patent applications may not adequately protect our 
intellectual property, provide exclusivity for our product candidates or prevent others from designing around our claims. If the breadth 
or strength of protection provided by the patent applications we hold is threatened, this could dissuade companies from collaborating
with us to develop, and could threaten our ability to commercialize, product candidates. Consequently, we do not know whether any of 
our genome-editing platform advances and product candidates will be protectable or remain protected by valid and enforceable
patents. Our competitors or other third parties may be able to circumvent our patents by developing similar or alternative technologies

90

or products in a non-infringing manner. For example, we are aware that third parties have suggested the use of the CRISPR 
technology in conjunction with a protein other than Cas9. Our owned and in-licensed patents may not cover such technology. If our 
competitors commercialize the CRISPR technology in conjunction with a protein other than Cas9, our business, financial condition, 
results of operations, and prospects could be materially adversely affected. Further, if we encounter delays in our clinical trials, the
period of time during which we could market product candidates under patent protection would be reduced. 

Because our gene-editing technology and product candidates could require the use of proprietary rights held by third parties, the 

growth of our business could depend in part on our ability to acquire, in-license, or use these proprietary rights. We may be unable to
acquire or in-license such intellectual property rights from third parties that we identify. In addition, companies that perceive us to be a 
competitor may be unwilling to assign or license rights to us. We also may be unable to license or acquire third-party intellectual
property rights on terms that would allow us to make an appropriate return on our investment. Furthermore, as industry, government,
academia and other biotechnology and pharmaceutical research expands and more patents are issued, the risk increases that our 
product candidates may give rise to claims of infringement of the patent rights of others. We cannot guarantee that our gene-editing
technology, product candidates or the use of such product candidates do not infringe third-party patents. Because patent rights are 
granted jurisdiction-by-jurisdiction, our freedom to practice certain technologies, including our ability to research, develop and 
commercialize our product candidates, may differ by country.

Any of these outcomes could impair our ability to prevent competition from third parties, which may have an adverse impact on 

our business. Our pending and future patent applications or the patent applications that we obtain rights to through in-licensing 
arrangements may not result in patents being issued which protect our technology or future product candidates, in whole or in part, or 
which effectively prevent others from commercializing competitive technologies and products.

In addition to the protection afforded by patents, we rely on trade secret protection and confidentiality agreements to protect 

proprietary know-how that is not patentable or that we elect not to patent, processes for which patents are difficult to enforce and any
other elements of our product candidate discovery and development processes that involve proprietary know-how, information or 
technology that is not covered by patents. However, trade secrets can be difficult to protect. We seek to protect our proprietary
technology and processes, in part, by entering into confidentiality agreements with our employees, consultants, scientific advisors and 
contractors. We also seek to preserve the integrity and confidentiality of our data and trade secrets by maintaining physical security of 
our premises and physical and electronic security of our information technology systems. While we have confidence in these
individuals, organizations and systems, agreements or security measures may be breached, and we may not have adequate remedies
for any breach. In addition, our trade secrets may otherwise become known or be independently discovered by competitors. 

Although we expect all of our employees and consultants to assign their inventions to us, and all of our employees, consultants, 

advisors and any third parties who have access to our proprietary know-how, information or technology to enter into confidentiality 
agreements, we cannot provide any assurances that all such agreements have been duly executed or that our trade secrets and other 
confidential proprietary information will not be disclosed or that competitors will not otherwise gain access to our trade secrets or 
independently develop substantially equivalent information and techniques. Misappropriation or unauthorized disclosure of our trade 
secrets could impair our competitive position and may have a material adverse effect on our business. Additionally, if the steps taken
to maintain our trade secrets are deemed inadequate, we may have insufficient recourse against third parties for misappropriating the
trade secret. In addition, others may independently discover our trade secrets and proprietary information. For example, the FDA, as
part of its Transparency Initiative, is currently considering whether to make additional information publicly available on a routine
basis, including information that we may consider to be trade secrets or other proprietary information, and it is not clear at the present 
time how the FDA’s disclosure policies may change in the future, if at all. 

Further, the laws of some foreign countries do not protect proprietary rights to the same extent or in the same manner as the laws

of the United States. As a result, we may encounter significant problems in protecting and defending our intellectual property both in 
the United States and abroad. If we are unable to prevent material disclosure of the non-patented intellectual property related to our 
technologies to third parties, and there is no guarantee that we will have any such enforceable trade secret protection, we may not be 
able to establish or maintain a competitive advantage in our market, which could materially adversely affect our business.

91

Third-party Claims Of Intellectual Property Infringement Against Us, Our Licensors Or Our Collaborators May Prevent Or 

Delay Our Product Discovery and Development Efforts.

Our commercial success depends in part on our avoiding infringement of the valid patents and proprietary rights of third parties.

Numerous U.S. and foreign issued patents and pending patent applications owned by third parties exist in the fields in which we 

are developing our product candidates. As industry, government, academia and other biotechnology and pharmaceutical research 
expands and more patents are issued, the risk increases that our product candidates may give rise to claims of infringement of the
patent rights of others. We cannot guarantee that our technology, future product candidates or the use of such product candidates do
not infringe third-party patents. It is also possible that we have failed to identify relevant third-party patents or applications. Because
patent rights are granted jurisdiction-by-jurisdiction, our freedom to practice certain technologies, including our ability to research, 
develop and commercialize our product candidates, may differ by country.

Third parties may assert that we infringe their patents or that we are otherwise employing their proprietary technology without 

authorization, and may sue us. There may be third-party patents of which we are currently unaware with claims to compositions, 
formulations, methods of manufacture or methods of use or treatment that cover product candidates we discover and develop. Because 
patent applications can take many years to issue, there may be currently pending patent applications that may later result in issued 
patents that our product candidates may infringe. In addition, third parties may obtain patents in the future and claim that use of our 
technologies or the manufacture, use or sale of our product candidates infringes upon these patents. If any such third-party patents
were held by a court of competent jurisdiction to cover our technologies or product candidates, the holders of any such patents may be
able to block our ability to commercialize the applicable product candidate unless we obtain a license under the applicable patents, or 
until such patents expire or are finally determined to be held invalid or unenforceable. Such a license may not be available on 
commercially reasonable terms or at all. If we are unable to obtain a necessary license to a third-party patent on commercially 
reasonable terms, our ability to commercialize our product candidates may be impaired or delayed, which could in turn significantly
harm our business.

Third-party Claims Of Intellectual Property May Prevent Or Delay Our Product Discovery and Development Efforts.

Third parties may seek to claim intellectual property rights that encompass or overlap with intellectual property that we own or 
license from them or others. Legal proceedings may be initiated to determine the scope and ownership of these rights, and could result 
in our loss of rights, including injunctions or other equitable relief that could effectively block our ability to further develop and 
commercialize our product candidates. Interference or derivation proceedings provoked by third parties or brought by the USPTO may
be necessary to determine the priority of inventions with respect to, or the correct inventorship of, our patents or patent applications or 
those of our licensors. An unfavorable outcome could result in a loss of our current patent rights and could require us to cease using 
the related technology or to attempt to license rights to it from the prevailing party. Our business could be harmed if the prevailing
party does not offer us a license on commercially reasonable terms. Litigation, interference or derivation proceedings may result in a
decision adverse to our interests and, even if we are successful, may result in substantial costs and distract our management and other 
employees.

For example, third parties could assert that we do not have rights to certain CRISPR/Cas9 technologies, or could assert and have 

asserted in the past, that the CVC Group does not have rights to certain CRISPR/Cas9 technologies, including inventorship and 
ownership rights to some of the CVC Group’s patents, or that such rights are limited.

Specifically, the Broad Institute and Massachusetts Institute of Technology and, in some instances, the President and Fellows of 

Harvard College, which we refer to individually and collectively as the “Broad” owns a patent family that includes issued patents in
the United States and Europe that claim certain aspects of CRISPR/Cas9 systems to edit DNA in eukaryotic cells, including human
cells. In January 2016, the USPTO declared an interference (Interference No. 106,048, or ’048 interference) between one of the then
pending U.S. patent applications (now issued as U.S. Patent No. 10,266,850) included in the Patent Portfolio and twelve issued U.S.
patents owned jointly by the Broad to determine which set of inventors invented first and, thus, is entitled to patents on the invention 
in the United States. The PTAB concluded that the declared interference should be discontinued because the involved claim sets were 
considered patentably distinct from each other. Following appeal by the CVC Group, on September 10, 2018, the Federal Circuit 
affirmed the PTAB’s decision to terminate the interference proceeding without determining which inventors actually invented the use
of the CRISPR/Cas9 genome editing technology in eukaryotic cells.

Further, in June 2019, the USPTO declared another interference (Interference No. 106,115, or ‘115 interference) between 

fourteen (14) pending U.S. patent applications co-owned by the CVC Group and thirteen (13) patents and a patent application co-
owned by the Broad. The Broad patents include those that were the subject of the ’048 interference. In September 2020, the PTAB 
issued an order that, among other matters, advanced the proceeding to the priority phase, where both the CVC Group, which will have 
the burden of proof, and the Broad will present their respective evidence seeking to prove that they, invented first. This interference is 

92

ongoing and will remain pending through the PTAB’s judgment on priority-of-invention. The PTAB’s judgment may be appealed to
the Federal Circuit, and thru to the Supreme Court. 

In addition to the Broad, other third parties, such as Vilnius University, ToolGen, Inc., MilliporeSigma (a subsidiary of Merck 

KGaA and formerly known as “Sigma-Aldrich”) and Harvard University, filed patent applications claiming CRISPR/Cas9-related 
inventions around or within a year after the CVC Group application was filed and allege (or may allege) that they invented one or 
more of the inventions claimed by the CVC Group before the CVC Group. If the USPTO deems the scope of the claims of one or 
more of these parties to sufficiently overlap with the allowable claims from the CVC Group application, the USPTO could declare 
other interference proceedings to determine the actual inventor of such claims. For example, in December 2020, the USPTO declared 
an interference (Interference No. 106,127, or ‘127 interference) between a ToolGen patent application that claims certain aspects of 
CRISPR/Cas9 systems to edit DNA in eukaryotic cells, including human cells, and the same fourteen pending U.S. patent applications 
co-owned by the CVC Group that are involved in the ’115 interference. This interference is ongoing and will remain pending through 
the PTAB’s judgment on priority-of-invention. The PTAB’s judgment may be appealed to the Federal Circuit, and thru to the
Supreme Court. In addition, in June 2021, the USPTO declared an interference (Interference No. 106,132, or ‘132 interference) 
between a MilliporeSigma patent application that claims certain aspects of CRISPR/Cas9 systems to edit DNA in eukaryotic cells, 
including human cells, and the same fourteen pending U.S. patent applications co-owned by the CVC Group that are involved in the 
’115 interference. This interference is ongoing and will remain pending through the PTAB’s judgment on priority-of-invention. The 
PTAB’s judgment may be appealed to the Federal Circuit, and thru to the Supreme Court.

Each of the CVC Group, the Broad, ToolGen, Vilnius University, MilliporeSigma and Harvard University can pursue existing 
or new patent applications in the United States and elsewhere. Because the CVC Group and these other third parties all allege owning 
intellectual property claiming overlapping aspects of CRISPR/Cas9 systems and methods to edit DNA in eukaryotic cells, including 
human cells, our ability to market and sell CRISPR/Cas9-based human therapeutics may be adversely impacted depending on the
scope and actual ownership over the inventions claimed in the competing patent portfolios.

Going forward, the USPTO could declare new interferences with the CVC Group, or us individually, related to the uses of the 

CRISPR/Cas9 technologies. Furthermore, we and the CVC Group continue to prosecute other patent claims covering the
CRISPR/Cas9 inventions, which could also result in allowable or issued patents in the United States. Certain of the claims being 
prosecuted by the CVC Group and us, if found allowable by the USPTO, could lead to interference proceedings against patents or 
patent applications owned by third parties, including those listed above. If the USPTO deems the scope of the claims of one or more of 
these parties to sufficiently overlap with the allowable claims from a patent or patent application within the Patent Portfolio or our 
portfolio of patents, the USPTO could declare other interference proceedings to determine the first inventor of such claims. We cannot 
be certain which of these results, if any, will actually occur. If there are additional interferences, either party to the interference could 
again appeal an adverse decision to the Federal Circuit. Additionally, any of the CVC Group’s existing or new patents or our existing
or new patents could be the subject of other challenges to their validity or enforceability. The effects that any such results may have on
us and our intellectual property position are currently unknown. 

If any third party were to succeed in its interference and prevail in their inventorship claims or obtain patent claims that cover 
our product candidates or related activities through these various legal proceedings, such party could seek to assert its issued patents
against us based on our CRISPR/Cas9-based activities, including commercialization. Third parties asserting their patent rights against 
us may seek and obtain injunctive or other equitable relief, which could effectively limit or block our ability to further develop and 
commercialize our product candidates. If we are found to infringe a third party’s valid intellectual property rights, we could be 
required to obtain a license from such third party to continue developing and marketing our products and technology, or avoid or 
invalidate such third party’s intellectual property. These third parties would be under no obligation to grant to us any such license and 
such licenses may not be available on commercially reasonable terms or at all, or may be non-exclusive. If we are unable to obtain and 
maintain such licenses, we and our partners may need to cease the practice of our core gene editing, and the development, 
manufacture, and commercialization of one or more of the product candidates we may develop. In addition, we could be found liable 
for monetary damages, including treble damages and attorneys’ fees if we are found to have willfully infringed a patent. A finding of 
infringement could prevent us from commercializing one or more of our product candidates, force us to redesign our infringing
products or force us to cease some or all of our business operations, any of which could materially harm our business and could 
prevent us from further developing and commercializing our proposed future product candidates thereby causing us significant harm. 
The loss of exclusivity or the narrowing of our patent claims could limit our ability to stop others from using or commercializing
similar or identical technology and products. Claims that we have misappropriated the confidential information or trade secrets of 
third parties could have a similar negative impact on our business. Any of the foregoing could result in a material adverse effect on our 
business, financial condition, results of operations, or prospects. Defense of these claims, regardless of their merit, would involve 
substantial litigation expense, would be a substantial diversion of management and other employee resources from our business and 
may impact our reputation. 

93

In any case, it may be years before there is a final determination on priority. Pursuant to the terms of the license agreement with 

Dr. Charpentier, we are responsible for covering or reimbursing Dr. Charpentier’s patent prosecution, defense and related costs 
associated with our in-licensed technology.

Third-party owned IP relating to CRISPR/Cas9 or other related technologies necessary to develop, manufacture and 
commercialize viable CRISPR/Cas9 therapeutics – such as compositions of the products or components, methods of treatment,
delivery technologies, chemical modifications, and analytical and manufacturing methods – could adversely impact our ability to 
ultimately market and sell products. Third parties may own intellectual property, including patents, that cover all or aspects of our 
technologies and potential products, and may be necessary for us to develop or commercialize viable products. If we are unable to
successfully license, avoid or challenge such third-party intellectual property, we may not be able to develop and commercialize viable 
products in all or certain jurisdictions. In addition, if the intellectual property covering our products or technologies that we own or 
license were to be legally impaired or lost, we may be unable to realize sufficient financial returns to support the development or 
commercialization of our products.

Further, third parties routinely file international counterparts of their U.S. applications, some of which have been granted or 
could in the future be granted in Europe and/or other non-U.S. jurisdictions. We, as well as other parties have initiated opposition 
proceedings against some of these grants, and we may in the future oppose other grants to these or other applicants. Similarly, our 
intellectual property is and may in the future become involved in opposition proceedings in Europe or other jurisdictions. These 
oppositions could lead to the revocation of the patents in whole or in part, or could lead to the claims being narrowed in a way that 
could impair or preclude our ability to enforce the patents against competitors in Europe. For example, in February 2018, several
parties filed oppositions in the European Patent Office to the grant of our first in-licensed European patent. Later in 2018 and in 2019, 
several parties filed oppositions in the European Patent Office to the grant of both our second and third in-licensed European patents. 
Opposition proceedings can lead to the revocation of a patent in its entirety; the maintenance of the patent as granted, or the 
maintenance of a patent in amended form. Opposition proceedings typically take years to resolve, including the time taken by appeals
that can be filed by any of the parties. We cannot guarantee the outcome of the oppositions to our in-licensed European patent, and an 
adverse result could preclude us from enforcing our rights in Europe against third parties. For example, in early 2020, the European 
Patent Office upheld our first in-licensed European patent in amended form; in late 2021, they revoked our second European patent, 
and the decision is pending appeal.

We are unable to predict the outcome of these matters and are unable to make a meaningful estimate of the amount or range of 
loss, if any, that could result from an unfavorable outcome. In the future, we may become party to legal matters and claims arising in
the ordinary course of business, the resolution of which we do not anticipate would have a material adverse impact on our financial 
position, results of operations or cash flows.

Our Rights To Develop And Commercialize Our Technology And Product Candidates Are Subject, In Part, To The Terms And 

Conditions Of Licenses Granted To Us By Others. 

We are reliant upon licenses to certain intellectual property from third parties that are important or necessary to the development 

of our gene-editing technology and product candidates. These and other licenses may not provide exclusive rights to use such
intellectual property and technology in all relevant fields of use or cover all territories in which we may wish to develop or 
commercialize our technology and products in the future. As a result, we may not be able to prevent competitors from developing and 
commercializing competitive products in territories included in all of our licenses.  

Moreover, under our in-license agreements, including our 2014 exclusive license agreement with Dr. Charpentier, we will be 

required to pay royalties based on our revenues from sales of our products utilizing the licensed technologies and these royalty 
payments could adversely affect the overall profitability for us of any products that we may seek to commercialize. Under each of our 
in-license agreements with Dr. Charpentier, we have an obligation to use commercially reasonable efforts to develop and obtain 
regulatory approval to market a licensed therapeutic product. Our in-license agreements with Dr. Charpentier also include an 
obligation to file an IND (or its equivalent in a major market country) by April 2021 and an obligation to file an IND (or its equivalent 
in a major market country) by April 2024. While we met the obligation to file an IND by April 2021, we may not be successful in 
meeting other remaining obligations in the future on a timely basis or at all. Our failure to meet the remaining obligations may give
Dr. Charpentier the right to terminate our license rights. We will need to outsource and rely on third parties for many aspects of the
clinical development of the products covered under our license agreements. Delay or failure by these third parties could adversely 
affect our ability to meet our diligence obligations and the continuation of our license agreements with third-party licensors. 

In spite of our best efforts, our licensors might conclude that we have materially breached our license agreements and might 

therefore terminate the license agreements, thereby removing our ability to develop and commercialize products and technology 
covered by these license agreements. If these in-licenses are terminated, or if the underlying patents fail to provide the intended 
exclusivity, competitors would have the freedom to seek regulatory approval of, and to market, products identical to ours. In addition, 

94

we may seek to obtain additional licenses from our licensors and, in connection with obtaining such licenses, we may agree to amend 
our existing licenses in a manner that may be more favorable to the licensors, including by agreeing to terms that could enable third 
parties (potentially including our competitors) to receive licenses to a portion of the intellectual property that is subject to our existing
licenses. Any of these events could have a material adverse effect on our competitive position, business, financial conditions, results
of operations, and prospects.

The Intellectual Property That Protects Our Core Gene-Editing Technology Is Jointly Owned, And Our License Is From Only

One Of The Joint Owners, Materially Limiting Our Rights In The United States And In Other Jurisdictions

The Patent Portfolio we have exclusively licensed from Dr. Charpentier is the core patent protection for our gene-editing
technology. However, that family includes other named inventors who assigned their rights either to California or Vienna. As such, 
the Patent Portfolio is currently co-owned by Dr. Charpentier, California, and Vienna. On December 15, 2016, we entered into a
Consent to Assignments, Licensing and Common Ownership and Invention Management Agreement, or IMA, with California, Vienna
and their licensees including Caribou and Caribou’s licensee Intellia Therapeutics. Under the IMA, the co-owners provided reciprocal
worldwide cross-consents to each of the other co-owners’ licensees and sublicensees, and agreed to a number of other commitments
and obligations with respect to supporting and managing the underlying CRISPR/Cas9 gene-editing intellectual property, including a 
cost-sharing agreement. As explained more fully below, that leaves us in a position of holding only non-exclusive or co-exclusive
rights to the patent rights that protect our core gene-editing technology, and we must continue to satisfy our contractual obligations
under the IMA in order to maintain the effectiveness of the consents by California and Vienna to our license from Dr. Charpentier. 

In the United States, each co-owner has the freedom to license and exploit the technology. As a result, we do not have exclusive
access to any intellectual property rights that Dr. Charpentier co-owns with another entity, such as California and Vienna. Our license
with Dr. Charpentier is therefore non-exclusive with respect to such co-owned rights. Furthermore, in the United States each co-owner 
is required to be joined as a party to any claim or action we may wish to bring to enforce those patent rights. Moreover, in the United 
States, non-exclusive licenses have no standing to bring a patent infringement action before a court. Therefore, for the patents owned 
with California and Vienna we have no ability to pursue third-party infringement claims without cooperation of California and Vienna 
and potentially their licensees. Although we have entered into the IMA with Vienna and California and their licensees, which provides
for, among other things, notice of and coordination in the event of third-party infringement of the patent rights within the Patent 
Portfolio, there can be no assurance that Vienna and California will cooperate with us in any future infringement. If we are unable to 
enforce our core patent rights licensed from Dr. Charpentier, we may be unable to prevent third parties from competing with us and 
may be unable to persuade companies to sublicense our technology, either of which could have a material adverse effect on our 
business. 

If We Experience Disputes With The Third Parties That We In-license Intellectual Property Rights From, We Could Lose

License Rights That Are Important To Our Business

We license the intellectual property that covers our gene-editing technology from a third party, and we expect to continue to in-
license additional third-party intellectual property rights as we expand our gene-editing technology. Disputes may arise with the third 
parties from whom we license our intellectual property rights from for a variety of reasons, including:

•

•

•

•

•

•

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

the extent to which our technology and processes infringe on, or derive from, intellectual property of the licensor that is 
not subject to the licensing agreement;

the sublicensing of patent and other rights under our collaborative development relationships and obligations associated 
with sublicensing;

our diligence obligations under the license agreement and what activities satisfy those diligence obligations;

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

the priority of invention of patented technology. 

In addition, the agreements under which we currently license intellectual property or technology from third parties, or maintain

consents under the IMA, are complex, and certain provisions in such agreements may be susceptible to multiple interpretations, or 
may conflict in such a way that puts us in breach of one or more agreements, which would make us susceptible to lengthy and 
expensive disputes with one or more of our licensing partners or the parties to the IMA. The resolution of any contract interpretation
disagreement that may arise could narrow what we believe to be the scope of our rights to the relevant intellectual property or 
technology, or increase what we believe to be our financial or other obligations under the relevant agreement, either of which could 

95

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

We May Not Be Successful In Obtaining Or Maintaining Necessary Rights To Any Product Candidates or Other Technologies

We May Develop Through Acquisitions And In-Licenses. 

We currently have rights to intellectual property, through in-licenses from third parties, to identify and develop product 
candidates, as well as use other technologies. Many pharmaceutical companies, biotechnology companies, and academic institutions
are competing with us in the field of gene-editing technology and filing patent applications potentially relevant to our business. For 
example, we are aware of several third-party patent applications that, if issued, may be construed to cover our gene-editing technology 
and product candidates. In order to avoid infringing these third-party patents, we may find it necessary or prudent to obtain licenses 
from such third-party intellectual property holders. We may also require licenses from third parties for certain modified or improved 
components of gene-editing technology, such as modified nucleic acids, as well as non-CRISPR/Cas9 technologies such as delivery 
methods that we are evaluating for use with product candidates we may develop. In addition, with respect to any patents we co-own 
with third parties, we may require licenses to such co-owners’ interest to such patents. However, we may be unable to secure such 
licenses or otherwise acquire or in-license any compositions, methods of use, processes, or other intellectual property rights from third 
parties that we identify as necessary for product candidates we may develop and gene-editing technology. The licensing or acquisition
of third-party intellectual property rights is a competitive area, and companies that may be more established, or have greater resources 
than we do may be pursuing strategies to license or acquire third-party intellectual property rights that we may consider attractive or 
necessary. More established companies may have a competitive advantage over us due to their size, capital resources and greater 
clinical development and commercialization capabilities. In addition, companies that perceive us to be a competitor may be unwilling
to assign or license rights to us. We also may be unable to license or acquire third party intellectual property rights on terms that 
would allow us to make an appropriate return on our investment or at all. There can be no assurance that we will be able to 
successfully complete such negotiations and ultimately acquire the rights to the intellectual property surrounding the additional 
product candidates or technology that we may seek to acquire. If we are unable to successfully obtain rights to required third-party 
intellectual property rights or maintain the existing intellectual property rights we have, we may have to abandon development of the
relevant program, technology, or product candidate, or discontinue the practice of our core CRISPR/Cas9 gene-editing technology, 
which could have a material adverse effect on our business, financial condition, results of operations, and prospects. 

Issued Patents Covering Our Technology And Product Candidates Could Be Found Invalid Or Unenforceable If Challenged In

Court or before the USPTO or comparable foreign authority. 

If we or one of our licensors initiated legal proceedings against a third party to enforce a patent covering a product candidate we 

may develop or our technology, including CRISPR/Cas9, the defendant could counterclaim that such patent is invalid or 
unenforceable. In patent litigation in the United States, defendant counterclaims alleging invalidity or unenforceability are
commonplace. Grounds for a validity challenge could be an alleged failure to meet any of several statutory requirements, including 
lack of novelty, obviousness, or non-enablement. Grounds for an unenforceability assertion could be an allegation that someone 
connected with prosecution of the patent withheld relevant information from the USPTO, or made a misleading statement, during 
prosecution.

Third parties have raised challenges to the validity of certain of our in-licensed patent applications, such as our in-licensed 
CRISPR/Cas9 patent applications in the context of third-party observations and oppositions filed in Europe and Australia, and may in 
the future raise similar claims related to our in-licensed and owned patent applications and patents before administrative bodies in the
United States or in other jurisdictions, even outside the context of litigation. Mechanisms for challenging the validity of patents in
patent offices include re-examination, post-grant review, inter partes review, interference proceedings, derivation proceedings, and 
equivalent proceedings in non-U.S. jurisdictions (e.g., opposition proceedings). Such proceedings could – after exhausting available
appeals – result in the loss of our patent applications or patents, or their narrowing in such a way that they no longer cover our 
technology or platform, or any product candidates that we may develop. The outcome following legal assertions of invalidity and 
unenforceability is unpredictable. With respect to the validity question, for example, we cannot be certain that there is no invalidating 
prior art. If a third party were to prevail on a legal assertion of invalidity or unenforceability, we would lose at least part, and perhaps
all, of the patent protection on our technology or platform, or any product candidates that we may develop. Such a loss of patent 
protection would have a material adverse impact on our business, financial condition, results of operations, and prospects.

96

The Intellectual Property Landscape Around Gene-Editing Technology, Including CRISPR/Cas9, Is Highly Dynamic, And Third 

Parties May Initiate And Prevail In Legal Proceedings Alleging That The Patents That We In-License Or Own Are Invalid Or That 
We Are Infringing, Misappropriating, Or Otherwise Violating Their Intellectual Property Rights, The Outcome Of Which Would Be
Uncertain And Could Have A Material Adverse Effect On The Success Of Our Business.

The field of gene editing, especially in the area of gene-editing technology, is still in its infancy, and no such products have 
reached the market. Due to the intense research and development that is taking place by several companies, including us and our 
competitors, in this field, the intellectual property landscape is in flux, and it may remain uncertain for the coming years. There may 
be significant intellectual property related litigation and proceedings relating to our owned and in-licensed, and other third party,
intellectual property and proprietary rights in the future.

Our commercial success depends upon our ability and the ability of our collaborators to develop, manufacture, market, and sell 

any product candidates that we may develop and use our proprietary technologies without infringing, misappropriating, or otherwise
violating the intellectual property and proprietary rights of third parties. The biotechnology and pharmaceutical industries are 
characterized by extensive litigation regarding patents and other intellectual property rights. We are subject to and may in the future 
become party to, or threatened with, adversarial proceedings or litigation regarding intellectual property rights with respect to our 
technology and any product candidates we may develop, including re-examination interference proceedings, post-grant review, inter 
partes review, and derivation proceedings before the USPTO and similar proceedings in other jurisdictions such as oppositions before 
the European Patent Office. Third parties may assert infringement claims against us based on existing patents or patents that may be 
granted in the future, regardless of their merit. If we are unable to prove that these patents are invalid and we are not able to obtain or 
maintain a license on commercially reasonable terms, such patents could have a material adverse effect on the conduct of our business.
If we are found to infringe such third-party patents, we and our partners may be required to pay damages, cease commercialization of 
the infringing technology, including our core CRISPR/Cas9 gene-editing technology, or obtain a license from such third parties, which 
may not be available on commercially reasonable terms or at all. 

Even if we believe third-party intellectual property claims are without merit, there is no assurance that a court would find in our 

favor on questions of infringement, validity, enforceability, ownership, or priority. A court of competent jurisdiction could hold that 
these third-party patents are valid, enforceable, and infringed, which could materially and adversely affect our ability to commercialize 
any product candidates we may develop and any other product candidates or technologies covered by the asserted third-party patents.
In order to successfully challenge the validity of any such U.S. patent in federal court, we would need to overcome a presumption of 
validity. As this burden is a high one requiring us to present clear and convincing evidence as to the invalidity of any such U.S. patent 
claim, there is no assurance that a court of competent jurisdiction would invalidate the claims of any such U.S. patent. If we are found 
to infringe a third party’s intellectual property rights, and we are unsuccessful in demonstrating that such patents are invalid or 
unenforceable, we could be required to obtain a license from such third party to continue developing, manufacturing, and marketing
any product candidates we may develop and our technology. However, we may not be able to obtain any required license on 
commercially reasonable terms or at all. Even if we were able to obtain a license, it could be non-exclusive, thereby giving our 
competitors and other third parties access to the same technologies licensed to us, and it could require us to make substantial licensing 
and royalty payments. We also could be forced, including by court order, to cease developing, manufacturing, and commercializing
the infringing technology or product candidates. In addition, we could be found liable for significant monetary damages, including
treble damages and attorneys’ fees, if we are found to have willfully infringed a patent or other intellectual property right. Claims that 
we have misappropriated the confidential information or trade secrets of third parties could have a similar material adverse effect on 
our business, financial condition, results of operations, and prospects.

 Intellectual Property Litigation Could Cause Us To Spend Substantial Resources And Distract Our Personnel From Their 

Normal Responsibilities.

Litigation or other legal proceedings relating to intellectual property claims, with or without merit, is unpredictable and 
generally expensive and time-consuming and is likely to divert significant resources from our core business, including distracting our 
technical and management personnel from their normal responsibilities and generally harm our business. Furthermore, because of the
substantial amount of discovery required in connection with intellectual property litigation in certain countries, including the United 
States, there is a risk that some of our confidential information could be compromised by disclosure during this type of litigation. In 
addition, there could be public announcements of the results of hearings, motions or other interim proceedings or developments and if 
securities analysts or investors perceive these results to be negative, it could have a substantial adverse effect on the price of our 
common shares. Such litigation or proceedings could substantially increase our operating losses and reduce the resources available for 
development activities or any future sales, marketing or distribution activities. 

We may not have sufficient financial or other resources to adequately conduct such litigation or proceedings. Some of our 

competitors may be able to sustain the costs of such litigation or proceedings more effectively than we can because of their greater 
financial resources. Accordingly, despite our efforts, we may not be able to prevent third parties from infringing or misappropriating 

97

or successfully challenging our intellectual property rights. Uncertainties resulting from the initiation and continuation of patent 
litigation or other proceedings could have a material adverse effect on our ability to compete in the marketplace. 

Some Intellectual Property Which We Have In-licensed May Have Been Discovered Through Government Funded Programs
And Thus May Be Subject To Federal Regulations Such As “march-in” Rights, Certain Reporting Requirements And A Preference 
For U.S.-based Manufacturers. Compliance With Such Regulations May Limit Our Exclusive Rights, And Limit Our Ability To
Contract With Non-U.S. Manufacturers.

The intellectual property rights to which we have in-licensed under Dr. Charpentier’s joint interest are co-owned by California,
which has indicated that one or more of the inventions were made under Grant No. GM081879 awarded by the National Institute of 
Health. These rights are therefore subject to certain federal regulations. The U.S. government has certain rights pursuant to the Bayh-
Dole Act of 1980, or Bayh-Dole Act, to patents covering government rights in certain inventions developed under a government-
funded program. These rights include a non-exclusive, non-transferable, irrevocable worldwide license to use inventions for any
governmental purpose. In addition, the U.S. government has the right to require us to grant exclusive, partially exclusive, or non-
exclusive licenses to any of these inventions to a third party if it determines that: (i) adequate steps have not been taken to 
commercialize the invention; (ii) government action is necessary to meet public health or safety needs; or (iii) government action is
necessary to meet requirements for public use under federal regulations, also referred to as “march-in rights.” The U.S. government 
also has the right to take title to these inventions if we, or the applicable contractor, fail to disclose the invention to the government 
and fail to file an application to register the intellectual property within specified time limits. Intellectual property generated under a 
government funded program is also subject to certain reporting requirements, compliance with which may require us or the applicable
contractor to expend substantial resources. In addition, the U.S. government requires that any products embodying the subject 
invention or produced through the use of the subject invention be manufactured substantially in the United States. The manufacturing 
preference requirement can be waived if the owner of the intellectual property can show that reasonable but unsuccessful efforts have
been made to grant licenses on similar terms to potential licensees that would be likely to manufacture substantially in the United 
States or that under the circumstances domestic manufacture is not commercially feasible. This preference for U.S. manufacturers may 
limit our ability to contract with non-U.S. product manufacturers for products covered by such intellectual property. To the extent any
of our current or future patents covering inventions is generated through the use of U.S. government funding, the provisions of the
Bayh-Dole Act may similarly apply. 

We May Not Be Able To Protect Our Intellectual Property And Proprietary Rights Throughout The World. 

Filing, prosecuting and defending patents on our product candidates in all countries throughout the world would be prohibitively 

expensive. The requirements for patentability may differ in certain countries, particularly in developing countries. Moreover, our 
ability to protect and enforce our intellectual property rights may be adversely affected by unforeseen changes in intellectual property 
laws various jurisdictions worldwide. Additionally, the patent laws of some countries do not afford intellectual property protection to 
the same extent as the laws of the United States. For example, unlike patent law in the United States, the patent law in Europe and 
many other jurisdictions precludes the patentability of methods of treatment of the human body and imposes substantial restrictions on
the scope of claims it will grant if broader than specifically disclosed embodiments.

Many companies have encountered significant problems in protecting and defending intellectual property rights in various 
jurisdictions globally. Consequently, we may not be able to prevent third parties from practicing our inventions in all countries outside
the United States, or from selling or importing products made using our inventions in and into the United States or other jurisdictions.
Competitors may use our technologies in jurisdictions where we have not pursued and obtained patent protection to develop their own 
products and, further, may export otherwise infringing products to territories where we have patent protection but enforcement is not 
as strong as that in the United States. These products may compete with our product candidates, and our patents or other intellectual
property rights may not be effective or sufficient to prevent them from competing. The legal systems of certain countries, particularly 
certain developing countries, do not favor the enforcement of patents, trade secrets, and other intellectual property protection, 
particularly those relating to biotechnology products, which could make it difficult for us to stop the infringement of our patents or 
marketing of competing products in violation of our intellectual property and proprietary rights generally. Proceedings to enforce our 
intellectual property and proprietary rights in various jurisdictions globally could result in substantial costs and divert our efforts and 
attention from other aspects of our business, could put our patents at risk of being invalidated or interpreted narrowly, could put our 
patent applications at risk of not issuing, and could provoke third parties to assert claims against us. We may not prevail in any 
lawsuits that we initiate, and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our 
efforts to enforce our intellectual property and proprietary rights around the world may be inadequate to obtain a significant 
commercial advantage from the intellectual property that we develop or license. 

Many countries have compulsory licensing laws under which a patent owner may be compelled to grant licenses to third parties.

In addition, many countries limit the enforceability of patents against third parties, including government agencies or government 
contractors. In these countries, the patent owner may have limited remedies, which could materially diminish the value of such patent. 

98

If we or any of our licensors is forced to grant a license to third parties with respect to any patents relevant to our business, our 
competitive position may be impaired, and our business, financial condition, results of operations, and prospects may be adversely
affected. Patent protection must ultimately be sought on a country-by-country basis, which is an expensive and time-consuming 
process with uncertain outcomes. Accordingly, we may choose not to seek patent protection in certain countries, and we will not have 
the benefit of patent protection in such countries. 

Changes To The Patent Law In The United States And Other Jurisdictions Could Diminish The Value Of Patents In General,

Thereby Impairing Our Ability To Protect Our Product Candidates.

As is the case with other biopharmaceutical companies, our success is heavily dependent on intellectual property, particularly
patents. Obtaining and enforcing patents in the biopharmaceutical industry involves both technological and legal complexity and is 
therefore costly, time consuming and inherently uncertain. Recent patent reform legislation in the United States and other countries, 
including the Leahy-Smith America Invents Act, or Leahy-Smith Act, signed into law on September 16, 2011, could increase those 
uncertainties and costs. The Leahy-Smith Act includes a number of significant changes to U.S. patent law. These include provisions 
that affect the way patent applications are prosecuted, redefine prior art and provide more efficient and cost-effective avenues for 
competitors to challenge the validity of patents. In addition, the Leahy-Smith Act has transformed the U.S. patent system into a “first 
to file” system. The first-to-file provisions, however, only became effective on March 16, 2013. Accordingly, it is not yet 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 make it more difficult to obtain patent protection for our inventions and 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 harm our business, 
results of operations and financial condition. 

The U.S. Supreme Court has ruled on several patent cases in recent years, either narrowing the scope of patent protection 
available in certain circumstances or weakening the rights of patent owners in certain situations. For example, in Association for 
Molecular Pathology v. Myriad Genetics, Inc., the Supreme Court ruled that a “naturally occurring DNA segment is a product of 
nature and not patent eligible merely because it has been isolated,” and invalidated Myriad Genetics’ claims on the isolated BRCA1
and BRCA2 genes. Certain claims of our patents relate to CRISPR/Cas9 gene-editing technology as well as guide components that are 
directed to naturally occurring DNA sequences. To the extent that such claims are deemed to be directed to natural products, or to lack 
an inventive concept above and beyond an isolated natural product, a court may decide the claims are invalid under Myriad.
Additionally, there have been recent proposals for additional changes to the patent laws of the United States and other countries that, if 
adopted, could impact our ability to obtain patent protection for our proprietary technology or our ability to enforce our proprietary 
technology. Depending on future actions by the U.S. Congress, the U.S. courts, the USPTO and the relevant law-making bodies in 
other countries, the laws and regulations governing patents could change in unpredictable ways that would weaken our ability to 
obtain new patents or to enforce our existing patents and patents that we might obtain in the future. Europe’s planned Unified Patent 
Court may particularly present uncertainties for our ability to protect and enforce our patent rights against competitors in Europe. 
While that new court is being implemented to provide more certainty and efficiency to patent enforcement throughout Europe, it will 
also provide our competitors with a new forum to use to centrally revoke our European patents. It will be several years before we will
understand the scope of patent rights that will be recognized and the strength of patent remedies that will be provided by that court. 
We will have the right to opt our patents out of that system over the first seven years of the court, but doing so may preclude us from 
realizing the benefits of the new unified court. 

Obtaining And Maintaining Our Patent Protection Depends On Compliance with Various Procedural, Document Submission,
Fee Payment and Other Requirements Imposed by Governmental Patent Agencies, And Our Patent Protection Could be Reduced or 
Eliminated For Non-Compliance With These Requirements.

Periodic maintenance fees on any issued patent are due to be paid to the USPTO and foreign patent agencies in several stages 
over the lifetime of the patent. The USPTO and various foreign governmental patent agencies require compliance with a number of 
procedural, documentary, fee payment and other similar provisions during the patent application process. Although an inadvertent 
lapse can in many cases be cured by payment of a late fee or by other means in accordance with the applicable rules, there are 
situations in which noncompliance can result in abandonment or lapse of the patent or patent application, resulting in partial or 
complete loss of patent rights in the relevant jurisdiction. Noncompliance events that could result in abandonment or lapse of a patent 
or patent application include failure to respond to official actions within prescribed time limits, non-payment of fees, and failure to
properly legalize and submit formal documents. In any such event, our competitors might be able to enter the market, which would 
have a material adverse effect on our business.

99

If We Are Unable To Protect The Confidentiality Of Our Trade Secrets, Our Business And Competitive Position Would Be

Harmed. 

In addition to seeking patents for some of our technology and product candidates, we also rely on trade secrets and 

confidentiality agreements to protect our unpatented know-how, technology, and other proprietary and confidential information and to
maintain our competitive position. Trade secrets and know-how can be difficult to protect. In particular, we anticipate that with respect 
to our technology platform, these trade secrets and know-how will over time be disseminated within the industry through independent 
development, the publication of journal articles describing the methodology, and the movement of personnel from academic to 
industry scientific positions.

We seek to protect these trade secrets and other proprietary technology, in part, by entering into non-disclosure and 

confidentiality agreements with parties who have access to them, such as our employees, corporate collaborators, outside scientific 
collaborators, CROs, contract manufacturers, consultants, advisors, and other third parties. We also enter into confidentiality and 
invention or patent assignment agreements with our employees and consultants. We cannot guarantee that we have entered into such
agreements with each party that may have or have had access to our trade secrets or proprietary technology and processes. Despite
these efforts, any of these parties may breach the agreements and disclose our proprietary information, including our trade secrets, and 
we may not be able to obtain adequate remedies for such breaches. Enforcing a claim that a party illegally disclosed or 
misappropriated a trade secret is difficult, expensive, and time-consuming, and the outcome is unpredictable. In addition, some courts
inside and outside the United States are less willing or unwilling to protect proprietary information. If we are unable to prevent 
unauthorized material disclosure of our intellectual property to third parties, or misappropriation of our intellectual property by third 
parties, we may not be able to establish or maintain a competitive advantage in our market, which could materially adversely affect 
our business, operating results, and financial condition. If any of our trade secrets were to be lawfully obtained or independently 
developed by a competitor or other third party, we would have no right to prevent them, or those to whom they communicate it, from 
using that technology or information to compete with us. If any of our trade secrets were to be disclosed to or independently 
developed by a competitor or other third party, our competitive position would be materially and adversely harmed. 

If We Do Not Obtain Patent Term Extension And Data Exclusivity For Any Product Candidates We May Develop, Our Business 

May Be Materially Harmed. 

Depending upon the timing, duration and specifics of any FDA marketing approval of any product candidates we may develop, 

one or more of our U.S. patents may be eligible for limited patent term extension under the Drug Price Competition and Patent Term
Restoration Action of 1984, or Hatch-Waxman Amendments. The Hatch-Waxman Amendments permit a patent extension term of up 
to five years as compensation for patent term lost during the FDA regulatory review process. A patent term extension cannot extend 
the remaining term of a patent beyond a total of 14 years from the date of product approval, only one patent may be extended and only
those claims covering the approved drug, a method for using it, or a method for manufacturing it may be extended. However, we may
not be granted an extension because of, for example, failing to exercise due diligence during the testing phase or regulatory review 
process, failing to apply within applicable deadlines, failing to apply prior to expiration of relevant patents, or otherwise failing to
satisfy applicable requirements. Moreover, the applicable time period or the scope of patent protection afforded could be less than we 
request. If we are unable to obtain patent term extension or if the term of any such extension is less than we request, we will be unable 
to rely on our patent position to forestall the marketing of competing products following our patent expiration, and our business, 
financial condition, results of operations, and prospects could be materially harmed. 

Intellectual Property Rights Do Not Necessarily Address All Potential Threats. 

The degree of future protection afforded by our intellectual property rights is uncertain because intellectual property rights have 

limitations and may not adequately protect our business or permit us to maintain our competitive advantage. For example: 

•

•

•

•

others may be able to make gene therapy products that are similar to any product candidates we may develop or utilize 
similar gene therapy technology but that are not covered by the claims of the patents that we license or may own in the 
future; 

we, or our license partners or current or future collaborators, might not have been the first to make the inventions covered 
by the issued patent or pending patent application that we license or may own in the future; 

we, or our license partners or current or future collaborators, might not have been the first to file patent applications
covering certain of our or their inventions; 

others may independently develop similar or alternative technologies or duplicate any of our technologies without 
infringing our owned or licensed intellectual property rights; 

100

•

•

•

•

•

•

it is possible that our pending licensed patent applications or those that we may own in the future will not lead to issued 
patents;

issued patents that we hold rights to may be held invalid or unenforceable, including as a result of legal challenges by our 
competitors;

our competitors might conduct research and development activities in countries where we do not have patent rights and 
then use the information learned from such activities to develop competitive products for sale in our major commercial 
markets; 

we may not develop additional proprietary technologies that are patentable; 

the patents of others may harm our business; and 

we may choose not to file a patent in order to maintain certain trade secrets or know-how, and a third party may
subsequently file a patent covering such intellectual property. 

Should any of these events occur, they could have a material adverse effect on our business, financial condition, results of 

operations, and prospects.

We May Be Subject To Claims That Our Employees, Consultants, Or Advisors Have Wrongfully Used Or Disclosed 

Confidential Information Of Their Current Or Former Employers Or Other Third Parties Or Claims Asserting Ownership Of What 
We Regard As Our Own Intellectual Property.

Many of our employees, consultants, and advisors are currently or were previously employed at universities or other 

biotechnology or pharmaceutical companies. Although we try to ensure that our employees, consultants, and advisors do not use the
proprietary information or know-how of others in their work for us, we may be subject to claims that we or these individuals have
used or disclosed confidential information or intellectual property, including trade secrets or other proprietary information, of any such 
individual’s current or former employer or other third party. Litigation may be necessary to defend against these claims. If we fail in
defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights or personnel.
Even if we are successful in defending against such claims, litigation could result in substantial costs and be a distraction to our 
management and employees.

In addition, while it is our policy to require our employees and contractors who may be involved in the conception or 
development of intellectual property to execute agreements assigning such intellectual property to us, we may be unsuccessful in
executing such an agreement with each party who, in fact, conceives or develops intellectual property that we regard as our own. The 
assignment of intellectual property rights may not be self-executing, or the assignment agreements may be breached, and we may be 
forced to bring claims against third parties, or defend claims that they may bring against us, to determine the ownership of what we 
regard as our intellectual property. Such claims could have a material adverse effect on our business, financial condition, results of 
operations, and prospects.

If Our Trademarks Are Not Adequately Protected, Then We May Not Be Able To Build Name Recognition In Our Markets Of 

Interest And Our Business May Be Adversely Affected.

If our trademarks are not adequately protected, then we may not be able to build name recognition in our markets of interest and 

our business may be adversely affected. Our unregistered trademarks may be challenged, infringed, circumvented or declared generic
or determined to be infringing on other marks. We may not be able to protect our rights to these trademarks, which we need to build 
name recognition among potential partners or customers in our markets of interest. At times, competitors may adopt trademarks 
similar to ours, thereby impeding our ability to build brand identity and possibly leading to market confusion. In addition, there could 
be potential trademark infringement claims brought by owners of other registered trademarks or trademarks that incorporate variations
of our unregistered trademarks. Over the long term, if we are unable to successfully register our trademarks and establish name 
recognition based on our trademarks, then we may not be able to compete effectively and our business may be adversely affected. Our 
efforts to enforce or protect our proprietary rights related to trademarks, trade secrets, domain names, copyrights or other intellectual
property may be ineffective and could result in substantial costs and diversion of resources and could adversely impact our financial 
condition or results of operations.

101

Risks Related to The Ownership of Our Common Shares 

We Incur Significant Costs As A Result Of Operating As A Public Company And Our Management Is Required To Devote

Substantial Time To Compliance Initiatives And Corporate Governance Practices.

As a public company, we incur significant legal, accounting and other expenses. The Sarbanes-Oxley Act, or SOX, the Dodd-

Frank Wall Street Reform and Consumer Protection Act, the listing requirements of The Nasdaq Global Market, and other applicable 
securities rules and regulations impose various requirements on public companies, including establishment and maintenance of 
effective disclosure and financial controls and corporate governance practices. Our management and other personnel devote a 
substantial amount of time towards maintaining compliance with these requirements. Moreover, these requirements increase our legal 
and financial compliance costs and make some activities more time-consuming and costly.

Pursuant to SOX Section 404, we are required to furnish a report by our management on our internal control over financial
reporting, including an attestation report on internal control over financial reporting issued by our independent registered public
accounting firm. In this regard, we incur substantial accounting expenses and expend significant management efforts.  Our testing may
reveal deficiencies in our internal control over financial reporting that are deemed to be material weaknesses or significant 
deficiencies. If we identify one or more material weaknesses, or significant deficiencies that we cannot remediate in a timely manner, 
it could result in an adverse reaction in the financial markets due to a loss of confidence in the reliability of our financial statements.

The Market Price Of Our Common Shares Has Been Volatile and Fluctuate Substantially, Which Could Result In Substantial 

Losses For Shareholders.

Our share price has been, and in the future may be, subject to substantial volatility. In addition, the stock market in general, and 
Nasdaq listed biopharmaceutical companies in particular have experienced extreme price and volume fluctuations that have often been 
unrelated or disproportionate to the operating performance of these companies. For example, our shares traded within a range of a high 
price of $220.20 and a low price of $11.63 per share for the period beginning on October 19, 2016, our first day of trading on the 
Nasdaq Global Market, through December 31, 2021. As a result of this volatility, our shareholders could incur substantial losses. In 
addition, the market price for our common shares may be influenced by many factors, including:

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

the success of existing or new competitive products or technologies;

the timing and results of any product candidates that we may develop;

commencement or termination of collaborations for our product development and research programs;

failure or discontinuation of any of our product development and research programs;

results of preclinical studies, clinical trials, or regulatory approvals of product candidates of our competitors, or 
announcements about new research programs or product candidates of our competitors; 

developments or changing views regarding the use of genomic products, including those that involve gene editing; 

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

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

the recruitment or departure of key personnel; 

the level of expenses related to any of our research programs, clinical development programs, or product candidates that 
we may develop; 

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

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

announcement or expectation of additional financing efforts; 

sales of our common shares by us, our insiders, or other shareholders;

expiration of market stand-off or lock-up agreements; 

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

changes in estimates or recommendations by securities analysts, if any, that cover our common shares;

changes in the structure of healthcare payment systems;

102

•

•

•

market conditions in the pharmaceutical and biotechnology sectors;

general economic, industry and market conditions; and 

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

These and other market and industry factors may cause the market price and demand for our common shares to fluctuate 
substantially, regardless of our actual operating performance, which may limit or prevent investors from readily selling their common 
shares and may otherwise negatively affect the liquidity of our common shares. In the past, when the market price of a stock has been
volatile, holders of that stock have instituted securities class action litigation against the company that issued the stock. If any of our 
shareholders brought a lawsuit against us, we could incur substantial costs defending the lawsuit. Such a lawsuit could also divert the
time and attention of our management.

If Securities Analysts Do Not Publish Research Or Reports About Our Business Or If They Publish Negative Evaluations Of Our 

Common Shares, The Price Of Our Common Shares Could Decline. 

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

Our Executive Officers, Directors, Principal Shareholders And Their Affiliates Maintain The Ability To Exercise Significant 

Influence Over Our Company And All Matters Submitted To Shareholders For Approval.

The holdings of our executive officers, directors and shareholders who own more than 5% of our outstanding common shares, 

together with their affiliates and related persons, represent beneficial ownership, in the aggregate, of approximately 26.0% of our 
common shares, based on the number of common shares outstanding as of February 11, 2022. As a result, these shareholders, if they
choose to act together, will be able to influence our management and affairs and the outcome of matters submitted to our shareholders
for approval, including the election of directors and any sale, merger, consolidation, or sale of all or substantially all of our assets. This 
concentration of voting power could delay or prevent an acquisition of our company on terms that other shareholders may desire.

In addition, this concentration of ownership might adversely affect the market price of our common shares by:

•

•

•

delaying, deferring or preventing a change of control of us;

impeding a merger, consolidation, takeover or other business combination involving us; or

discouraging a potential acquirer from making a tender offer or otherwise attempting to obtain control of us

We Have Broad Discretion In The Use Of Our Cash Reserves And May Not Use Such Cash Reserves Effectively.yy

Our management has broad discretion to use our cash reserves and could use our cash reserves in ways that do not improve our 

results of operations or enhance the value of our common shares. The failure by our management to apply these funds effectively 
could result in financial losses that could have a material adverse effect on our business, cause the price of our common shares to
decline, and delay the development of our product candidates. Pending their use, we may invest our cash reserves in a manner that 
does not produce income or that loses value.

Sales Of A Substantial Number Of Our Common Shares In The Public Market Could Cause Our Share Price To Fall.

Sales of a substantial number of our common shares in the public market or the perception that these sales might occur could 
depress the market price of our common shares, could make it more difficult for you to sell your common shares at a time and price 
that you deem appropriate and could impair our ability to raise capital through the sale of additional equity securities. We are unable 
to predict the effect that sales may have on the prevailing market price of our common shares.

103

We Do Not Expect To Pay Dividends In The Foreseeable Future. 

We have not paid any dividends since our incorporation. Even if future operations lead to significant levels of distributable 
profits, we currently intend that any earnings will be reinvested in our business and that no dividends will be paid prior to the time we 
have an established revenue stream to support continuing dividends. The proposal to pay future dividends to shareholders will in
addition effectively be at the discretion of our board of directors and shareholders after taking into account various factors including 
our business prospects, cash requirements, financial performance and new product development. In addition, payment of future 
dividends is subject to certain limitations pursuant to Swiss law or by our articles of association. Accordingly, investors cannot rely on 
dividend income from our common shares and any returns on an investment in our common shares will likely depend entirely upon 
any future appreciation in the price of our common shares. Dividends, if any, paid on our common shares are subject to Swiss federal 
withholding tax, except if paid out of reserves from capital contributions, or Kapitaleinlagen.

We Are A Swiss Corporation. The Rights Of Our Shareholders May Be Different From The Rights Of Shareholders In 

Companies Governed By The Laws Of U.S. Jurisdictions. 

We are a Swiss corporation. Our corporate affairs are governed by our articles of association and by Swiss law. The rights of our 

shareholders and the responsibilities of members of our board of directors may be different from the rights and obligations of 
shareholders and directors of companies governed by the laws of U.S. jurisdictions. In the performance of its duties, our board of 
directors is required by Swiss law to consider the interests of our Company, our shareholders and our employees with due observation
of the principles of reasonableness and fairness. It is possible that the board of directors will consider interests that are different from, 
or in addition to, your interests as a shareholder. Swiss corporate law limits the ability of our shareholders to challenge resolutions 
made or other actions taken by our board of directors in court. Our shareholders generally are not permitted to file a suit to reverse a 
decision or an action taken by our board of directors but are instead only permitted to seek damages for breaches of the duty of care
and loyalty. As a matter of Swiss law, shareholder claims against a member of our board of directors for breach of the duty of care and 
loyalty would have to be brought in Zug, Switzerland, or where the relevant member of our board of directors is domiciled. In
addition, under Swiss law, any claims by our shareholders against us must be brought exclusively in Zug, Switzerland.

As A Swiss Corporation, We Are Subject To Swiss Legal Provisions That May Limit Our Flexibility To Swiftly Implement 

Certain Initiatives Or Strategies.

We are required, from time to time, to evaluate the carrying amount of our investments in affiliates, as presented on our Swiss 

standalone balance sheet. If we determine that the carrying amount of any such investment exceeds its fair value, we may conclude
that such investment is impaired. The recognized loss associated with such a non-cash impairment could result in our net assets no 
longer covering our statutory share capital and statutory capital reserves. Under Swiss law, if our net assets cover less than 50 percent 
of our statutory share capital and statutory capital reserves, the board of directors must convene a general meeting of shareholders and 
propose measures to remedy such a capital loss. The appropriate measures depend on the relevant circumstances and the magnitude of 
the recognized loss and may include seeking shareholder approval for offsetting the aggregate loss, or a portion thereof, with our 
statutory capital reserves including qualifying additional paid-in capital otherwise available for distributions to shareholders or raising 
new equity. Depending on the circumstances, we may also need to use qualifying additional paid-in capital available for distributions
in order to reduce our accumulated net loss and such use might reduce our ability to make distributions without subjecting our 
shareholders to Swiss withholding tax. These Swiss law requirements could limit our flexibility to swiftly implement certain initiatives
or strategies.

Anti-takeover Provisions In Our Articles Of Association Could Make An Acquisition Of Our Company, Which May Be

Beneficial To Our Shareholders, More Difficult And May Prevent Attempts By Our Shareholders To Replace Or Remove Our Current 
Management.

Provisions in our articles of association may discourage, delay or prevent an acquisition of our Company or changes in the 
composition of our board of directors. Among other things, these provisions require the approval of at least two thirds of represented 
shares present or voting at a shareholder meeting for the removal of a member of our board of directors and to increase the maximum 
number of members of our board of directors; limit the accumulated voting rights of any person or entity to 15% of our registered 
share capital; limit the voting rights of an acquirer of more than 5% of our registered share capital in a transaction or series of 
transactions in which our board of directors did not provide for an exemption, which could prevent or delay a change in control of our 
Company; provide that the board of directors is authorized, subject to obtaining shareholder approval every two years, at any time 
during a maximum two-year period, which under our current authorized share capital will expire on June 10, 2023, to issue a specified 
number of shares, which under our current authorized share capital is approximately forty-nine percent of the share capital registered 
in the commercial register, and to limit or withdraw the preemptive rights of existing shareholders in various circumstances; provide
for a conditional share capital that authorizes the issuance of additional shares up to a maximum amount of approximately thirty-two 
percent of the share capital registered in the commercial register, without obtaining additional shareholder approval, (i) through the 

104

exercise of conversion and/or option rights granted in connection with bonds or similar instruments, including convertible debt 
instruments, and (ii) in connection with the exercise of options granted to employees or other service providers of the Company or any 
of its subsidiaries; and provide that a merger or demerger transaction requires the affirmative vote of at least two thirds of the shares
represented at a shareholders’ meeting.

Although we believe these provisions collectively provide for an opportunity to obtain greater value for shareholders by 
requiring potential acquirors to negotiate with our board of directors, they would apply even if an offer rejected by our board were 
considered beneficial by some shareholders. In addition, these provisions may frustrate or prevent any attempts by our shareholders to
replace or remove our current management by making it more difficult for shareholders to replace members of our board of directors, 
which is responsible for appointing the members of our management.

Our Common Shares Are Issued Under The Laws Of Switzerland, Which May Not Protect Investors In A Similar Fashion 

Afforded By Incorporation In A U.S. State. 

We are organized under the laws of Switzerland. However, there can be no assurance that Swiss law will not change in the 

future or that it will serve to protect investors in a similar fashion afforded under corporate law principles in the U.S., which could 
adversely affect the rights of investors. 

Our Status As A Swiss Corporation May Limit Our Flexibility With Respect To Certain Aspects Of Capital Management And 

May Cause Us To Be Unable To Make Distributions Without Subjecting Our Shareholders To Swiss Withholding Tax.

Swiss law allows our shareholders to authorize share capital that can be issued by the board of directors without additional

shareholder approval. This authorization is limited to 50% of the existing registered share capital and must be renewed by the 
shareholders every two years. The authorized share capital approved by our shareholders will expire on June 10, 2023 and is limited to 
approximately forty-nine percent of our registered share capital pursuant to the articles of association in force. Subject to specified 
exceptions, Swiss law grants preemptive rights to existing shareholders to subscribe to any new issuance of shares. Swiss law also
does not provide as much flexibility in the various terms that can attach to different classes of shares as the laws of some other 
jurisdictions. Swiss law also reserves for approval by shareholders certain corporate actions over which a board of directors would 
have authority in some other jurisdictions. For example, the payment of dividends and the cancellation of treasury shares must be
approved by shareholders. These Swiss law requirements relating to our capital management may limit our flexibility, and situations 
may arise where greater flexibility would have provided substantial benefits to our shareholders. 

Under Swiss law, a Swiss corporation may pay dividends only if the corporation has sufficient distributable profits from 
previous fiscal years, or if the corporation has distributable reserves, each as evidenced by its audited standalone statutory balance 
sheet, and after allocations to reserves required by Swiss law and our articles of association have been deducted. Freely distributable
reserves are generally booked either as “free reserves” or as “capital contributions” (Kapitaleinlagen
shareholders) in the “reserve from capital contributions.” Distributions may be made out of registered share capital—the aggregate par 
value of a company’s registered shares—only by way of a capital reduction. We will not be able to pay dividends or make other 
distributions to shareholders on a Swiss withholding tax-free basis in excess of our aggregate qualifying contributions and registered 
share capital unless we increase our share capital or our reserves from capital contributions. We would also be able to pay dividends
out of distributable profits or freely distributable reserves, but such dividends would be subject to Swiss withholding taxes. There can 
be no assurance that we will have sufficient distributable profits, free reserves, reserves from capital contributions or registered share 
capital to pay a dividend or effect a capital reduction, that our shareholders will approve dividends or capital reductions proposed by
us or that we will be able to meet the other legal requirements for dividend payments or distributions as a result of capital reductions.

, contributions received from 

((

Dividends and similar cash or in-kind distributions made by the Company to a shareholder (including liquidation proceeds and 

((

stock dividends) are subject to Swiss withholding tax (Verrechnungssteuer), currently at a rate of 35% (applicable to the gross amount 
of the taxable distribution). The Company is obliged to deduct the Swiss withholding tax from the gross amount of any taxable 
distribution and to pay the tax to the Swiss Federal Tax Administration within 30 calendar days of the due date of such distribution. 
However, the repayment of the nominal value of the shares and any repayment of qualifying additional paid-in capital (capital
contribution reserves (Reserven aus Kapitaleinlagen
)) are not subject to Swiss withholding tax. The Swiss withholding tax will also
apply to payments (exceeding the respective share capital and used capital contribution reserves) upon a repurchase of shares by the
Company, (i) if the Company’s share capital is reduced upon such repurchase (redemption of shares), (ii) if the total of repurchased 
shares exceeds 10% of the Company’s share capital or (iii) if the repurchased shares are not resold within six years after the 
repurchase. This six-year deadline to resell the repurchased shares is suspended for so long as the shares are reserved to cover 
obligations under convertible bonds, option bonds or employee stock option plans (in the case of employee stock option plans, the
maximum suspension is six years). In the event of a taxable share repurchase, Swiss withholding tax is imposed on the difference 
between the repurchase price and the sum of the nominal value of the repurchased shares and capita contribution reserves paid back 
upon the repurchase. 

105

Swiss resident individuals who hold their shares as private assets, or Resident Private Shareholders, are in principle eligible for a 

full refund or credit against income tax of the Swiss withholding tax if they duly report the underlying income in their income tax 
return. In addition, (i) corporate and individual shareholders who are resident in Switzerland for tax purposes, (ii) corporate and 
individual shareholders who are not resident in Switzerland, and who, in each case, hold their shares as part of a trade or business
carried on in Switzerland through a permanent establishment with fixed place of business situated in Switzerland for tax purposes and 
(iii) Swiss resident private individuals who, for income tax purposes, are classified as “professional securities dealers” for reasons of, 
inter alia, frequent dealing, or leveraged investments, in shares and other securities (collectively, “Domestic Commercial 
Shareholders”) are in principle eligible for a full refund or credit against income tax of the Swiss withholding tax if they duly report 
the underlying income in their income statements or income tax return, as the case may be. 

Shareholders who are not resident in Switzerland for tax purposes, and who, during the respective taxation year, have not 
engaged in a trade or business carried on through a permanent establishment with fixed place of business situated in Switzerland for 
tax purposes, and who are not subject to corporate or individual income taxation in Switzerland for any other reason (collectively,
“Non-Resident Shareholders”) may be entitled to a total or partial refund of the Swiss withholding tax if the country in which such
recipient resides for tax purposes maintains a bilateral treaty, or Tax Treaty, for the avoidance of double taxation with Switzerland and 
further conditions of such Tax Treaty are met.

A U.S. shareholder that qualifies for benefits under the U.S.-Swiss Tax Treaty, may apply for a refund of the tax withheld in
excess of the 15% treaty rate (or in excess of the 5% reduced treaty rate for qualifying corporate shareholders with at least 10% voting 
rights, or for a full refund in the case of qualified pension funds). Non-Resident Shareholders should be aware that the procedures for 
claiming treaty benefits (and the time required for obtaining a refund) may differ from country to country. Non-Resident Shareholders
should consult their own legal, financial or tax advisors regarding receipt, ownership, purchases, sale or other dispositions of shares 
and the procedures for claiming a refund of the Swiss withholding tax. 

Certain U.S. Shareholders May Be Subject To Adverse U.S. Federal Income Tax Consequences If We Are A Controlled Foreign

Corporation.

Each “Ten Percent Shareholder" (as defined below) in a non-U.S. corporation that is classified as a “controlled foreign
corporation,” or a CFC, for United States federal income tax purposes generally is required to include in income for U.S. federal tax 
purposes such Ten Percent Shareholder’s pro rata share of the CFC’s “Subpart F income” and investment of earnings in U.S. property,
even if the CFC has made no distributions to its shareholders. Subpart F income generally includes dividends, interest, rents and 
royalties, gains from the sale of securities and income from certain transactions with related parties. For tax years beginning after 
December 31, 2017, each Ten Percent Shareholder of a CFC is also required to include in income such Ten Percent Shareholder’s 
share of “global intangible low-taxed income” with respect to such CFC. In addition, a Ten Percent Shareholder that realizes gain
from the sale or exchange of shares in a CFC may be required to classify a portion of such gain as dividend income rather than capital 
gain. A non-U.S. corporation generally will be classified as a CFC for United States federal income tax purposes if Ten Percent 
Shareholders own, directly or indirectly, more than 50% of either the total combined voting power of all classes of stock of such
corporation entitled to vote or of the total value of the stock of such corporation. A “Ten Percent Shareholder” is a United States
person (as defined by the U.S. Internal Revenue Code of 1986, as amended, or the Code, who owns or is considered to own 10% or 
more of (1) the total combined voting power of all classes of stock entitled to vote or (2) the value of all classes of stock of such 
corporation. The determination of CFC status is complex and includes attribution rules, the application of which is not entirely certain. 

During our 2021 taxable year we believe that we had certain shareholders that were Ten Percent Shareholders for U.S. federal

income tax purposes. However, our CFC status for the taxable year ending on December 31, 2021 and our current taxable year is 
unknown and we may be a CFC for the taxable year ending on December 31, 2021, our current taxable year or a following year. In
addition, recent changes to the attribution rules relation to the determination of CFC status may make it difficult to determine our CFC 
status for any taxable year. Furthermore, it is possible that our non-United States subsidiaries will be CFCs for the current taxable year 
or a future taxable year even if we are not a CFC for such taxable year(s). U.S. holders should consult their own tax advisors with 
respect to the potential adverse U.S. tax consequences of becoming a Ten Percent Shareholder in a CFC. If we are classified as both a 
CFC and a passive foreign investment company, or PFIC, we generally will not be treated as a PFIC with respect to those U.S. holders 
that meet the definition of a Ten Percent Shareholder during the period in which we are a CFC. 

106

Certain U.S. Shareholders May Suffer Adverse Tax Consequences If We Are Characterized As A Passive Foreign Investment 

Company.

Generally, if, for any taxable year, at least 75% of our gross income is passive income, or at least 50% of the value of our assets

is attributable to assets that produce passive income or are held for the production of passive income, including cash, we would be 
characterized as a PFIC for U.S. federal income tax purposes. For purposes of these tests, passive income includes dividends, interest,
and gains from the sale or exchange of investment property and rents and royalties other than rents and royalties which are received 
from unrelated parties in connection with the active conduct of a trade or business. If we are characterized as a PFIC, U.S. holders of 
our common shares may suffer adverse tax consequences, including having gains realized on the sale of the common shares treated as
ordinary income, rather than capital gain, the loss of the preferential rate applicable to dividends received on the common shares by 
individuals who are U.S. holders, and having interest charges apply to distributions by us and the proceeds of sales of the common
shares. 

Our status as a PFIC will depend on the composition of our income and the composition and value of our assets which may be

determined in part by reference to the quarterly market value of our common shares, which may be volatile. Our status may also 
depend, in part, on how, and how quickly, we utilize the cash proceeds from prior offerings in our business. Our status as a PFIC is a
fact-intensive determination made on an annual basis and we cannot provide any assurances regarding our PFIC status for any past,
current or future taxable years.

Because it is possible we were a PFIC for the 2020 taxable year, we provided information necessary for our shareholders to 

make a qualified electing fund, or QEF, election with respect to us for the 2020 taxable year. We provided such information on our 
website (www.crisprtx.com). A U.S. holder that makes a QEF election with respect to our shares is required to include a pro rata share 
of our income on a current basis, whether or not we make distributions. For the 2020 taxable year, the amount of our ordinary earnings
and net capital gain for purposes of the QEF inclusion rules was $0.0 million of ordinary earnings and $0.0 net capital gain, and we
may have material amounts of ordinary earnings and/or net capital gain for purposes of the QEF inclusion rules in the 2021 taxable 
year or future taxable years. Although we have not yet determined whether we are a PFIC for the 2021 taxable year or the current 
taxable year, it is possible that we may be a PFIC for the 2021 taxable year and / or current taxable year as well. We will endeavor to 
provide to you, for each taxable year that we are or may be a PFIC, a PFIC Annual Information Statement containing information
necessary for you to make a QEF election with respect to us. Alternatively, a U.S. holder may be able to make a mark-to-market 
election, assuming that our shares constitute “marketable” securities under the Code, which generally avoids the adverse consequences
of PFIC status discussed above, but would require a U.S. holder to annually report as ordinary income any increase in value of our 
shares during the year (as well as generally allowing deductions for any decrease in the value of our shares).

If we are determined to be a PFIC, a U.S. holder will generally be treated as owning a proportionate amount (by value) of shares

owned by us in any of our direct or indirect subsidiaries that are also PFICs, each a lower-tier PFIC, and will be subject to similar 
adverse rules with respect to distributions from, or dispositions of, such lower-tier PFICs, in each case as if such U.S. holder held such
shares directly (even if such U.S. holder does not receive the proceeds of such distributions or dispositions directly). We have not 
determined whether any of our subsidiaries (including TRACR and CRISPR Therapeutics Ltd.) are or may be lower-tier PFICs for 
any prior taxable year, the current taxable year or future taxable years, and we do not intend to do so. We also do not intend to make
available the information necessary for U.S. holders to make a QEF election with respect to any lower-tier PFICs and therefore you 
should expect that you will not be able to make a QEF election with respect to them.  You are urged to consult your own tax advisors
regarding our PFIC status and the tax considerations relevant to an investment in a PFIC, including the availability, and advisability, 
of, and procedure for making, a QEF election or a mark to market election with respect to us, and the application of the PFIC rules to
any of our subsidiaries.  See “Risk Factor—Comprehensive Tax Reform Legislation Could Adversely Affect Our Business And 
Financial Condition.”

U.S. Shareholders May Not Be Able To Obtain Judgments Or Enforce Civil Liabilities Against Us Or Our Executive Officers Or 

Members Of Our Board Of Directors.

We are organized under the laws of Switzerland and our registered office and domicile is located in Zug, Switzerland.

Moreover, certain of our directors and executive officers and a number of directors of each of our subsidiaries are not residents of the
United States, and all or a substantial portion of the assets of such persons are located outside the United States. As a result, it may not 
be possible for investors to effect service of process within the United States upon us or upon such persons or to enforce against them
judgments obtained in U.S. courts, including judgments in actions predicated upon the civil liability provisions of the federal securities
laws of the United States. We have been advised by our Swiss counsel that there is doubt as to the enforceability in Switzerland of 
original actions, or in actions for enforcement of judgments of U.S. courts, of civil liabilities to the extent solely predicated upon the 
federal and state securities laws of the United States. Original actions against persons in Switzerland based solely upon the U.S.
federal or state securities laws are governed, among other things, by the principles set forth in the Swiss Federal Act on Private
International Law. This statute provides that the application of provisions of non-Swiss law by the courts in Switzerland shall be 

107

precluded if the result is incompatible with Swiss public policy. Also, mandatory provisions of Swiss law may be applicable
regardless of any other law that would otherwise apply.

Switzerland and the United States do not have a treaty providing for reciprocal recognition and enforcement of judgments in
civil and commercial matters. The recognition and enforcement of a judgment of the courts of the United States in Switzerland is 
governed by the principles set forth in the Swiss Federal Act on Private International Law. This statute provides in principle that a 
judgment rendered by a non-Swiss court may be enforced in Switzerland only if: 

•

•

•

•

•

the non-Swiss court had jurisdiction pursuant to the Swiss Federal Act on Private International Law; 

the judgment of such non-Swiss court has become final and non-appealable; 

the judgment does not contravene Swiss public policy;

the court procedures and the service of documents leading to the judgment were in accordance with the due process of 
law; and 

no proceeding involving the same position and the same subject matter was first brought in Switzerland, or adjudicated in 
Switzerland, or was earlier adjudicated in a third state and this decision is recognizable in Switzerland. 

Item 1B. Unresolved Staff Comments. 

None.

Item 2. Properties. 

Our principal executive offices are located in Zug, Switzerland pursuant to a real estate lease agreement with a term that renews 

every three months. Our U.S. headquarters are located at 610 Main Street, Cambridge, Massachusetts where we lease approximately 
98,064 square feet of laboratory and office space under two separate subleases, which expire in 2022.

In July 2020, we entered into a lease agreement for approximately 263,500 square feet of office and laboratory space in a to-be-

constructed building in Boston, Massachusetts, or the 2020 Boston Lease. We intend for the new facility to be our new U.S.
headquarters for research and development and plan to consolidate our various office and laboratory locations in the greater Boston
area into this single location. The facility is leased through October 2034 with an option to extend the term of the lease for two 
additional five-year periods.

In May 2020, we entered into a lease agreement for a 50,249 square foot building in Framingham, Massachusetts, which we

plan to use as a cell therapy manufacturing facility for clinical and commercial production of our investigational cell therapy product 
candidates. This facility is leased through March 2036 with an option to extend the term of the lease for two additional seven-year 
periods.

We also lease business offices elsewhere in Cambridge, Massachusetts, San Francisco, California and London, United 
Kingdom. We believe that our facilities are adequate for our current needs and that suitable additional or substitute space would be
available if needed.

Item 3. Legal Proceedings.

In the ordinary course of business, we are from time to time involved in lawsuits, investigations, proceedings and threats of 
litigation related to, among other things, our intellectual property estate (including the Patent Portfolio), commercial arrangements and 
other matters.  Such proceedings may include quasi-litigation, inter partes administrative proceedings in the U.S. Patent and 
Trademark Office and the European Patent Office involving our intellectual property estate including the Patent Portfolio. The 
outcome of any of the foregoing, regardless of the merits, is inherently uncertain. In addition, litigation and related matters are costly
and may divert the attention of our management and other resources that would otherwise be engaged in other activities.  If we were
unable to prevail in any such proceedings, our business, results of operations, liquidity and financial condition could be adversely
affected.  For further information regarding risks involving our intellectual property estate including the Patent Portfolio, please see
“Risk Factors—Risks Related to Intellectual Property” contained in Item 1A of this report.

Item 4. Mine Safety Disclosures.

Not applicable.

108

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

PART II

Market Information

Our common shares are traded on The Nasdaq Global Market under the symbol “CRSP.” 

Stock Performance Graph

The following performance graph and related information shall not be deemed to be “soliciting material” or to be “filed” with

the Securities and Exchange Commission, or SEC, for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or 
the Exchange Act, nor shall such information be incorporated by reference into any future filing under the Exchange Act or Securities 
Act of 1933, as amended, or the Securities Act, except to the extent that we specifically incorporate it by reference into such filing.

The graph set forth below compares the cumulative total stockholder return on our shares between October 19, 2016 (the date of 
our initial public offering) and December 31, 2021, with the cumulative total return of (a) the Nasdaq Biotechnology Index and (b) the 
Nasdaq Composite Index, over the same period. This graph assumes the investment of $100 on October 19, 2016 in our common
shares, the Nasdaq Biotechnology Index and the Nasdaq Composite Index and assumes the reinvestment of dividends, if any. The
graph assumes our closing sales price on October 19, 2016 of $14.09 per share as the initial value of our common shares and not the 
initial offering price to the public of $14.00 per share. The comparisons shown in the graph below are based upon historical data. The
stock price performance included in this graph is not necessarily indicative of future stock price performance.

Comparison of Total Return Among CRISPR Therapeutics AG, the NASDAQ Biotechnology Index and the NASDAQ
Composite Index

1600

1400

1200

1000

800

600

400

200

0

-200

D ec-3 1-20 16

Holders

D ec-3 1-20 17

D ec-3 1-20 18

D ec-3 1-20 19

D ec-3 1-20 20

D ec-3 1-20 21

CRISPR Therape utics AG (Nasda qGM:CRSP ) - Share Pricing

NASDAQ B iotectt hnolog y Ind ex (^NBI) - Ind ex Value

NASDAQ Compositett

In dex (^COMP) - Index Va lue

As of February 11, 2022, we had approximately 15 holders of record of our common shares. This number does not include 

beneficial owners whose shares were held in street name.

Dividends

We have not paid any cash dividends on our common shares since inception and do not anticipate paying cash dividends in the

foreseeable future.

109

Securities authorized for issuance under equity compensation plans 

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

on Form 10-K.

Item 6. Reserved

Not applicable.

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

You should read the following discussion and analysis of our financial condition and results of operations together with the
section entitled “Selected Consolidated Financial Data” and our consolidated financial statements and related notes appearing 
elsewhere in this Annual Report on Form 10-K. Some of the information contained in this discussion and analysis or set forth 
elsewhere in this Annual Report on Form 10-K, including information with respect to our plans and strategy for our business and 
related financing, includes forward-looking statements that involve risks and uncertainties. As a result of many factors, including 
those factors set forth in the "Risk Factors" section of this Annual Report on Form 10-K, our actual results could differ materially 
from the results described in or implied by the forward-looking statements contained in the following discussion and analysis.

Special Note About Coronavirus (COVID-19)

Since March 2020, we have been evaluating the actual and potential business impacts related to the outbreak of a novel strain of 
virus named SARS-CoV-2 (severe acute respiratory syndrome 2), or coronavirus, which causes coronavirus disease, or COVID-19. As 
a result of the coronavirus pandemic, we have experienced, and may further experience, disruptions, pauses and/or delays that have
and could further adversely impact our business, operations, and/or associated timelines. As we gradually return to work in accordance
with state and local regulations, we maintain temporary work-from-home procedures for all employees other than for those personnel
and contractors who perform essential activities that must be completed on-site. If negative developments relating to the coronavirus
pandemic continue, including “periodic resurgence” and additional “waves”, we may be required to restrict on-site staff at our offices
and laboratories again and at times have limited access to our offices on a temporary and intermittent basis; with respect to our 
hemoglobinopathies clinical trials, we may elect to pause patient dosing in certain of our trials again if ICU beds and related 
healthcare resources become significantly constrained again or governmental authorities impose additional business or travel 
restrictions; with respect to our immuno-oncology clinical trials, investigators participating in our clinical trials may not want to take 
the risk of exposing cancer patients to the coronavirus since the dosing of patients is conducted within an in-patient setting; and certain 
aspects of our supply chain could be disrupted if our third party suppliers and manufacturers paused their operations again in response
to such negative developments and/or as a result of national and local regulations. The ultimate impact of the coronavirus pandemic on
our business operations remains uncertain and subject to change and will depend on future developments, which cannot be accurately
predicted. We will continue to monitor the situation closely. Please refer to our Risk Factors in Part I, Item IA of this Annual Report 
on Form 10-K for a discussion of the risks related to the coronavirus pandemic.

d

Overview

We are a leading gene editing company focused on the development of CRISPR/Cas9-based therapeutics. CRISPR/Cas9 is a 
revolutionary gene editing technology that allows for precise, directed changes to genomic DNA. The application of CRISPR/Cas9 for 
gene editing was co-invented by one of our scientific founders, Dr. Emmanuelle Charpentier, who, along with her collaborators, 
published work elucidating how CRISPR/Cas9, a naturally occurring viral defense mechanism found in bacteria, can be adapted for 
use in gene editing. We are applying this technology to potentially treat a broad set of rare and common diseases by disrupting, 
correcting or regulating the genes related to such diseases. We believe that our scientific expertise, together with our approach, may 
enable an entirely new class of highly active and potentially curative therapies for patients for whom current biopharmaceutical 
approaches have had limited success.

We have established a portfolio of therapeutic programs across a broad range of disease areas including hemoglobinopathies, 

oncology, regenerative medicine and rare diseases. 

Our lead product candidate, CTX001, is an investigational, autologous, gene-edited hematopoietic stem cell therapy that is being

evaluated for the treatment of transfusion-dependent beta thalassemia, or TDT, and severe sickle cell disease, or SCD. CTX001 is 
being developed under a joint development and commercialization agreement between us and Vertex. 

We and Vertex are investigating CTX001 in ongoing Phase 3 open-label clinical trials that are designed to assess the safety and 

efficacy of a single dose of CTX001 in patients ages 12 to 35 with TDT (CLIMB THAL-111) or SCD (CLIMB SCD-121), 
respectively. The first two patients in each trial were treated sequentially and, following data from the initial two patients indicating 

110

successful engraftment and an acceptable safety profile, the corresponding trial opened for concurrent dosing. CLIMB THAL-111 and 
CLIMB SCD-121 are designed to follow patients for approximately two years after infusion. Each patient will be asked to participate
in a long-term, open-label follow-up trial, CLIMB-131, to evaluate the safety and efficacy of CTX001 in patients who received 
CTX001. CLIMB-131 is designed to follow participants for up to 15 years after CTX001 infusion. Enrollment is complete for both 
CLIMB THAL-111 and CLIMB SCD-121.

 In the second quarter of 2021, at the European Hematology Association Congress, we presented updated clinical data from the 

first fifteen patients with TDT and first seven patients with SCD treated with CTX001 who had reached at least three months of 
follow-up after CTX001 dosing.

CTX001 has been granted a number of regulatory designations from the FDA, including RMAT, Fast Track, Orphan Drug, and 
Rare Pediatric Disease designations for the treatment of both TDT and SCD. CTX001 has also been granted Orphan Drug Designation 
from the European Commission, as well as PRIME designation from the EMA, for the treatment of both TDT and SCD. 

Immuno-Oncology

In addition, we are developing our own portfolio of CAR-T cell product candidates based on our gene-editing technology.

CTX110. Our lead immuno-oncology product candidate, CTX110, is a healthy donor-derived gene-edited allogeneic CAR-T 

investigational therapy targeting Cluster of Differentiation 19, or CD19. CTX110 is being investigated in an ongoing Phase 1 single-
arm, multi-center, open-label clinical trial, CARBON, that is designed to assess the safety and efficacy of several dose levels of 
CTX110 in adult patients with relapsed or refractory B-cell malignancies who have received at least two prior lines of therapy. 
CTX110 has been granted RMAT designation by the FDA.

In the fourth quarter of 2021, we released updated clinical data from the ongoing CARBON trial for 26 patients treated with 

CTX110 who had reached at least 28 days of follow-up. 

CTX120. CTX120 is a healthy donor-derived gene-edited allogeneic CAR-T investigational therapy targeting B-cell maturation 

antigen. CTX120 is being investigated in an ongoing Phase 1 single-arm, multi-center, open-label clinical trial that is designed to
assess the safety and efficacy of several dose levels of CTX120 for the treatment of relapsed or refractory multiple myeloma. CTX120
has received Orphan Drug Designation from the FDA.

CTX130. CTX130 is a healthy donor-derived gene-edited allogeneic CAR-T investigational therapy targeting Cluster of 
Differentiation 70, or CD70, an antigen expressed on various solid tumors and hematologic malignancies. CTX130 is being developed 
for the treatment of both solid tumors, such as renal cell carcinoma, and T-cell and B-cell hematologic malignancies. CTX130 is being 
investigated in two ongoing independent Phase 1 single-arm, multi-center, open-label clinical trials that are designed to assess the
safety and efficacy of several dose levels of CTX130 for the treatment of relapsed or refractory renal cell carcinoma and various types
of lymphoma, respectively. CTX130 for the treatment of T-cell lymphoma has received Orphan Drug Designation from the FDA.

Regenerative Medicine

Regenerative medicine, or the use of stem cells to repair or replace tissue or organ function lost due to disease, damage or age,
holds the potential to treat both rare and common diseases. We are pursuing gene-editing approaches to allow allogeneic use of stem
cell-derived therapies by enabling immune evasion, improving existing cell function and directing cell fate using CRISPR/Cas9.

Our first major effort in this area is in diabetes, and we and ViaCyte are advancing a program as part of a strategic collaboration 

for the discovery, development, and commercialization of gene-edited stem cell therapies for the treatment of diabetes. 

VCTX210. VCTX210 is an investigational, allogeneic, gene-edited, immune-evasive, stem cell-derived product candidate for the 
treatment of T1D developed by applying our gene-editing technology to ViaCyte’s proprietary stem cell capabilities. We and ViaCyte 
are investigating VCTX210 in an ongoing Phase 1 clinical trial that is designed to assess VCTX210’s safety, tolerability, and immune 
evasion in patients with T1D.

Partnerships

Given the numerous potential therapeutic applications for CRISPR/Cas9, we have partnered strategically to broaden the 
indications we can pursue and accelerate development of programs by accessing specific technologies and/or disease-area expertise.
We maintain three broad strategic partnerships to develop gene editing-based therapeutics in specific disease areas.

111

Vertex. We established our initial collaboration agreement in 2015 with Vertex, which focused on TDT, SCD, cystic fibrosis and 

select additional indications. In December 2017, we entered into a joint development and commercialization agreement with Vertex 
pursuant to which, among other things, we are co-developing and preparing to co-commercialize CTX001 for TDT and SCD. In April
2021, we and Vertex agreed to amend and restate our existing joint development and commercialization agreement, pursuant to which, 
among other things, we will continue to develop and prepare to commercialize CTX001 for TDT and SCD in partnership with Vertex. 
We also entered into a strategic collaboration and license agreement with Vertex in June 2019 for the development and 
commercialization of products for the treatment of Duchenne muscular dystrophy and myotonic dystrophy type 1. 

ViaCyte. We entered into a research and collaboration agreement in September 2018 with ViaCyte to pursue the discovery, 

development and commercialization of gene-edited allogeneic stem cell therapies for the treatment of diabetes and in July 2021, we
entered into a joint development and commercialization agreement with ViaCyte. Under the joint development and commercialization
agreement, we and ViaCyte will jointly develop and commercialize product candidates and shared products for use in the treatment of 
diabetes type 1, diabetes type 2 and insulin dependent/requiring diabetes throughout the world. 

Bayer. In the fourth quarter of 2019, we entered into a series of transactions, or the Bayer Transaction, pursuant to which we and 

Bayer terminated our 2015 agreement, which had created the joint venture, Casebia, to discover, develop and commercialize 
CRISPR/Cas9 gene-editing therapeutics to treat the genetic causes of bleeding disorders, autoimmune disease, blindness, hearing loss
and heart disease. In connection thereto, Casebia became a wholly-owned subsidiary of ours. We and Bayer also entered into a new 
option agreement pursuant to which Bayer has an option to co-develop and co-commercialize two products for the diagnosis, 
treatment or prevention of certain autoimmune disorders, eye disorders, or hemophilia A disorders for a specified period of time, or, 
under certain circumstances, exclusively license such optioned products.

Nkarta. In the second quarter of 2021, we entered into a research and collaboration agreement with Nkarta, Inc., or Nkarta, to

bring together our gene editing technology and T-cell expertise with Nkarta’s leading natural killer, or NK, cell discovery,
development and manufacturing capabilities. Under the collaboration, we and Nkarta are co-developing and co-commercializing two
donor-derived, gene-edited CAR-NK cell product candidates, one of which targets CD70, and a product candidate combining NK and 
T cells.

Capsida. In the second quarter of 2021, we entered into a strategic collaboration agreement with Capsida Biotherapeutics, Inc., 

or Capsida, to develop in vivo gene editing therapies delivered with engineered AAV vectors for the treatment of ALS and 
Friedreich’s ataxia. Under the agreement, we lead research and development of the Friedreich’s ataxia program and perform gene-
editing activities for both programs, and Capsida leads research and development of the ALS program and conducts capsid 
engineering for both programs. Capsida’s high-throughput AAV engineering platform aims to generate capsids optimized to target 
specific tissue types and limits transduction of tissues and cell types that are not relevant to the target disease, potentially improving
the activity and tolerability of our gene editing investigational therapies. We and Capsida each have the option to co-develop and co-
commercialize the program that the other leads.

For additional information regarding the key terms of these arrangements, please see "Business – Strategic Partnerships and 

Collaborations".

Financial Overview  

Since our inception in October 2013, we have devoted substantially all of our resources to our research and development efforts, 

identifying potential product candidates, undertaking drug discovery and preclinical development activities, building and protecting
our intellectual property estate, organizing and staffing our company, business planning, raising capital and providing general and 
administrative support for these operations. To date, we have primarily financed our operations through private placements of our 
preferred shares, common share issuances, convertible loans and collaboration agreements with strategic partners.

While we were in a net income position in the current and certain previous years due to upfronts associated with our 

collaborations with Vertex, we have a history of recurring losses and expect to continue to incur losses for the foreseeable future. Our 
net losses may fluctuate significantly from quarter to quarter and year to year. We anticipate that our expenses will increase 
significantly as we continue our current research programs and development activities; seek to identify additional research programs
and additional product candidates; conduct initial drug application supporting preclinical studies and initiate clinical trials for our 
product candidates; initiate preclinical testing and clinical trials for any other product candidates we identify and develop; maintain, 
expand and protect our intellectual property estate; further develop our gene editing platform; hire additional research, clinical and 
scientific personnel; incur facilities costs associated with such personnel growth; develop manufacturing infrastructure, including 
regulatory validation activities; and incur additional costs associated with operating as a public company.

112

Revenue Recognition

We have not generated any revenue to date from product sales and do not expect to do so in the near future. During the years 
ended December 31, 2021, 2020 and 2019, we recognized $913.1 million, $0.5 million and $289.6 million, respectively, of revenue 
related to our collaboration agreements with Vertex, as well as certain arrangements with Casebia prior to the Bayer Transaction.

For the years ended December 31, 2021 and 2020, we generated $1.9 million and $0.2 million, respectively, of grant revenue 

related to certain contracts with not-for-profit entities. No grant revenue was generated in prior years.

For additional information about our revenue recognition policy, see Note 2 and Note 9 of the notes to our audited consolidated 

financial statements included in this Annual Report on Form 10-K. 

Research and Development Expenses 

Research and development expenses consist primarily of costs incurred for our research activities, including our product 

discovery efforts and the development of our product candidates, which include: 

•

•

•

•

•

•

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

costs of services performed by third parties that conduct research and development and preclinical activities on our behalf; 

costs of purchasing lab supplies and non-capital equipment used in our preclinical activities and in manufacturing 
preclinical study materials; 

consultant fees;

facility costs, including rent, depreciation and maintenance expenses; and 

fees and other payments related to acquiring and maintaining licenses under our third-party licensing agreements. 

Research and development costs are expensed as incurred. Nonrefundable advance payments for research and development 

goods or services to be received in the future are deferred and capitalized. The capitalized amounts are expensed as the related goods 
are delivered or the services are performed. At this time, we cannot reasonably estimate or know the nature, timing or estimated costs
of the efforts that will be necessary to complete the development of any product candidates we may identify and develop. This is due 
to the numerous risks and uncertainties associated with developing such product candidates, including the uncertainty of:

•

•

•

•

•

•

•

•

•

•

•

successful completion of preclinical studies and IND-enabling studies;

successful enrollment in, and completion of, clinical trials; 

receipt of marketing approvals from applicable regulatory authorities;

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

obtaining and maintaining patent and trade secret protection and non-patent exclusivity; 

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

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

effectively competing with other therapies and treatment options; 

a continued acceptable safety profile following approval; 

enforcing and defending intellectual property and proprietary rights and claims; and 

achieving desirable medicinal properties for the intended indications. 

A change in the outcome of any of these variables with respect to the development of any product candidates or the subsequent 
commercialization of any product candidates we may successfully develop could significantly change the costs, timing and viability 
associated with the development of that product candidate. 

Except for activities we perform in connection with our collaborations with Vertex and ViaCyte, as well in connection with the 

Bayer Transaction, we do not track research and development costs on a program-by-program basis. 

Research and development activities are central to our business model. We expect our research and development costs to
increase significantly for the foreseeable future as our current development programs progress, new programs are added and as we 

113

continue to prepare regulatory filings. These increases will likely include the costs related to the implementation and expansion of 
clinical trial sites and related patient enrollment, monitoring, program management and manufacturing expenses for current and future 
clinical trials. 

General and Administrative Expenses 

General and administrative expenses consist primarily of employee related expenses, including salaries, benefits and equity-
based compensation, for personnel in executive, finance, accounting, business development and human resources functions. Other 
significant costs include facility costs not otherwise included in research and development expenses, legal fees relating to patent and 
corporate matters and fees for accounting and consulting services.

We anticipate that our general and administrative expenses will increase in the future to support continued research and 

development activities, and potential commercialization of our product candidates. In addition, we anticipate increased expenses
related to the reimbursements of third-party patent related expenses in connection with certain of our in-licensed intellectual property.

Other income, net

Other income, net consists primarily of interest income earned on investments, the gain resulting from the consolidation of 
Casebia following the Bayer Transaction in 2019 and the loss from equity method investment from stock-based compensation awards 
granted to employees of Casebia, prior to consolidation in 2019. 

Critical Accounting Policies and Significant Judgments and Estimates

This discussion and analysis of our financial condition and results of operations is based on our financial statements, which we 

have prepared in accordance with U.S. generally accepted accounting principles. We believe that several accounting policies are 
important to understanding our historical and future performance. We refer to these policies as critical because these specific areas 
generally require us to make judgments and estimates about matters that are uncertain at the time we make the estimate, and different 
estimates—which also would have been reasonable—could have been used. On an ongoing basis, we evaluate our estimates and 
judgments, including those described in greater detail below. We base our estimates on historical experience and other market-specific 
or other relevant assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making 
judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ 
from these estimates under different assumptions or conditions.

While our significant accounting policies are described in more detail in the notes to our financial statements included elsewhere 

in this Annual Report on Form 10-K, we believe that the following accounting policies are the most critical to aid you in fully 
understanding and evaluating our financial condition and results of operations.

Revenue

Accounting Standards Codification Topic 606, Revenue from Contracts with Customers, or ASC 606, applies to all contracts
with customers, except for contracts that are within the scope of other standards, such as leases and collaboration arrangements. To
determine revenue recognition for arrangements that an entity determines are within the scope of ASC 606, the entity performs the 
following five steps: 

1) Identify the contract with the customer

A contract with a customer exists when (i) we enter into an enforceable contract with a customer that defines each party’s rights

regarding the goods or services to be transferred and identifies the related payment terms, (ii) the contract has commercial substance
and (iii) we determine that collection of substantially all consideration for goods and services that are transferred is probable based on
the customer’s intent and ability to pay the promised consideration.

2) Identify the performance obligations in the contract

Performance obligations promised in a contract are identified based on the goods and services that will be transferred to the 

customer that are both capable of being distinct, whereby the customer can benefit from the good or service either on its own or 
together with other available resources, and are distinct in the context of the contract, whereby the transfer of the good or service is 
separately identifiable from other promises in the contract. To the extent a contract includes multiple promised goods and services, we

114

must apply judgment to determine whether promised goods and services are capable of being distinct and distinct in the context of the
contract. If these criteria are not met, the promised goods and services are accounted for as a combined performance obligation.

3) Determine the transaction price

The transaction price is determined based on the consideration to which we will be entitled in exchange for transferring goods 

and services to the customer. To the extent the transaction price includes variable consideration, such as research, development, 
regulatory and commercial milestones, we determine if it is probable that we will receive such amounts and there is no risk of a
significant revenue reversal. When we cannot conclude that receipt of such amounts is probable, we constrain the related variable 
consideration resulting in its exclusion from transaction consideration. In determining the portion of the transaction consideration to be 
constrained, we consider the probability and uncertainty that the related research, developmental, regulatory and commercial 
milestones will be achieved given the nature of research and clinical development and the stage of the underlying programs. This
assessment is performed at each reporting period. In making this evaluation, we consider both internal and external information 
available, including information from industry publications and other relevant factors. Changes to the constraint of variable
consideration can have a material effect on the amount of revenue recognized in the period. 

4) Allocate the transaction consideration to performance obligations in the contract

If the contract contains a single performance obligation, the entire transaction consideration is allocated to the single 

performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction consideration
to each performance obligation on a relative standalone selling price basis unless the transaction consideration is variable and meets
the criteria to be allocated entirely to a performance obligation or to a distinct service that forms part of a single performance 
obligation. The consideration to be received is allocated among the separate performance obligations based on relative standalone 
selling prices. In determining these estimated standalone selling prices, we make a number of significant judgements including, for 
licenses, management’s assumptions regarding probability weighted projected discounted cash flows for each of the collaboration 
development programs. The estimated standalone selling prices are sensitive to changes in assumptions, such as probabilities of 
scientific success, discount rate and certain assumptions that form the basis of forecasted cash flows. In developing these assumptions,
management considers both internal and external information available, including information from other guideline companies within
the same industry and other relevant factors. Changes to these assumptions can have a material effect on the allocation of the
transaction consideration to performance obligations, as well as the amount and timing of revenue recognized. 

5) Recognize revenue when or as we satisfy a performance obligation

We satisfy performance obligations over time or at a point in time, depending on the nature of the performance obligation.

Revenue is recognized over time if the customer simultaneously receives and consumes the benefits provided by the entity’s
performance, the entity’s performance creates or enhances an asset that the customer controls as the asset is created or enhanced, or 
the entity’s performance does not create an asset with an alternative use to the entity and the entity has an enforceable right to payment 
for performance completed to date. If the entity does not satisfy a performance obligation over time, the related performance 
obligation is satisfied at a point in time by transferring the control of a promised good or service to a customer. 

Collaboration Arrangements

We record the elements of our collaboration agreements that represent joint operating activities in accordance with ASC 808, 

Collaborative arrangements, or ASC 808. Accordingly, the elements of the collaboration agreements that represent activities in which 
both parties are active participants and to which both parties are exposed to the significant risks and rewards that are dependent on the
commercial success of the activities, are recorded as collaborative arrangements. 

We evaluate the proper presentation of the commercial activities and the profit and loss sharing associated with the collaboration

t

agreements. ASC 808 states that when payments between parties in a collaborative arrangement are not within the scope of other 
authoritative accounting literature, the income statement classification should be based on the nature of the arrangement, the nature of 
its business operations and the contractual terms of the arrangement. To the extent that these payments are not within the scope of 
other authoritative accounting literature, the income statement classification for the payments shall be based on an analogy to 
authoritative accounting literature or if there is no appropriate analogy, a reasonable, rational, and consistently applied accounting
policy election.

Accrued research and development expenses

As part of the process of preparing our financial statements, we are required to estimate our accrued expenses. This process 

involves reviewing open contracts and purchase orders, communicating with our personnel to identify services that have been 

115

performed on our behalf and estimating the level of service performed and the associated cost incurred for the service when we have
not yet been invoiced or otherwise notified of the actual cost. The majority of our service providers invoice us monthly in arrears for 
services performed or when contractual milestones are met. We make estimates of our accrued expenses as of each balance sheet date 
in our financial statements based on facts and circumstances known to us at that time.  Examples of estimated accrued research and 
development expenses include fees paid to:

•

•

•

•

CROs in connection with clinical studies;

investigative sites in connection with clinical studies;

vendors in connection with preclinical development activities; and

vendors related to development, manufacturing and distribution of clinical trial materials.

We base our expenses related to clinical studies on our estimates of the services received and efforts expended pursuant to

contracts with multiple CROs that conduct and manage clinical studies on our behalf. The financial terms of these agreements are
subject to negotiation, vary from contract to contract and may result in uneven payment flows. There may be instances in which 
payments made to our vendors will exceed the level of services provided and result in a prepayment of the clinical expense. Payments
under some of these contracts depend on factors such as the successful enrollment of subjects and the completion of clinical study
milestones. In accruing service fees, we estimate the time period over which services will be performed and the level of effort to be
expended in each period and adjust accordingly.

Variable Interest Entities 

We review each legal entity formed by parties related to us to determine whether or not the entity is a variable interest entity, or 

VIE, in accordance with ASC Topic 810, Consolidation. If the entity is a VIE, we assess whether or not we are the primary 
beneficiary of that VIE based on a number of factors, including (i) which party has the power to direct the activities that most 
significantly affect the VIE’s economic performance, (ii) the parties’ contractual rights and responsibilities pursuant to any contractual 
agreements and (iii) which party has the obligation to absorb losses or the right to receive benefits from the VIE. If we determine that 
we are the primary beneficiary of a VIE, we treat the VIE as a business combination and consolidate the financial statements of the 
VIE into our consolidated financial statements at the time that determination is made. On a quarterly basis, we evaluate whether it 
continues to be the primary beneficiary of any consolidated VIEs. If we determine that we are no longer the primary beneficiary of a 
consolidated VIE, or no longer have a variable interest in the VIE, we deconsolidate the VIE in the period that the determination is
made. 

If we determine that we are the primary beneficiary of a VIE that meets the definition of a business, we measure the assets, 
liabilities and non-controlling interests of the newly consolidated entity at fair value in accordance with ASC Topic 805, Business
Combinations, on the date we become the primary beneficiary. 

We determined that Casebia was a VIE and concluded that we were not the primary beneficiary of the VIE prior to December 

13, 2019. As such, we did not consolidate Casebia’s results into the consolidated financial statements prior to December 13, 2019.
Instead, we accounted for our 50% investment in Casebia under the equity method. On December 13, 2019, Casebia became a fully-
owned subsidiary of us and, as a result, we consolidated Casebia’s financial results from that date forward.

Equity-Based Compensation

Our share-based compensation programs grant awards that have included stock options, restricted stock units and restricted 

stock awards. Grants are awarded to employees and non-employees, including directors. 

We account for our stock-based compensation awards in accordance with ASC Topic 718, Compensation—Stock Compensation, 

or ASC 718. ASC 718 requires all stock-based payments to employees and non-employee directors, including grants of employee 
stock options and restricted stock units and modifications to existing stock options, to be recognized in the consolidated statements of 
operations and comprehensive loss based on their fair values. We use the Black-Scholes option pricing model to determine the fair 
value of options granted.

We account for forfeitures as they occur instead of estimating forfeitures at the time of grant and revising those estimates in 

subsequent periods if actual forfeitures differ from its estimates. Stock-based compensation expense recognized in the financial 
statements is based on awards for which performance or service conditions are expected to be satisfied.

116

Our stock-based awards are subject to service or performance-based vesting conditions. Compensation expense related to
awards to employees, directors and non-employees with service-based vesting conditions is recognized on a straight-line basis based 
on the grant date fair value over the associated service period of the award, which is generally the vesting term. Compensation 
expense related to awards to employees with performance-based vesting conditions is recognized based on the grant date fair value 
over the requisite service period using the accelerated attribution method to the extent achievement of the performance condition is 
probable.

We expense restricted stock unit awards to employees based on the fair value of the award on a straight-line basis over the 

associated service period of the award.

We estimate the fair value of our option awards to employees, directors and non-employees using the Black-Scholes option 

pricing model, which requires the input of subjective assumptions, including (i) the expected stock price volatility, (ii) the calculation
of expected term of the award, (iii) the risk-free interest rate and (iv) expected dividends. Due to the lack of complete company-
specific historical and implied volatility data for the full expected term of the stock-based awards, we base our estimate of expected 
volatility on a representative group of publicly traded companies in addition to our own volatility data. For these analyses, we selected 
companies with comparable characteristics to our own, including enterprise value, risk profiles, position within the industry and with 
historical share price information sufficient to meet the expected life of the stock-based awards. We compute historical volatility data
using the daily closing prices for the selected companies’ shares during the equivalent period of the calculated expected term of the
stock-based awards. We will continue to apply this process until a sufficient amount of historical information regarding the volatility
of our own stock price becomes available. We have estimated the expected term of our employee stock options using the “simplified” 
method, whereby, the expected term equals the arithmetic average of the vesting term and the original contractual term of the option
due to its lack of sufficient historical data. The risk-free interest rates for periods within the expected term of the option are based on
the U.S. Treasury securities with a maturity date commensurate with the expected term of the associated award. We have never paid,
and do not expect to pay, dividends in the foreseeable future. 

Recent Accounting Pronouncements 

Refer to Note 2 of the notes to our consolidated financial statements included in this Annual Report on Form 10-K for a 

discussion of recent accounting pronouncements.

Results of Operations 

The following is a discussion of the components of results of operations. This section generally 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 that are not included in this Form 10-K can be found in “Management’s Discussion and Analysis of Financial Condition and 
Results of Operations” Part II, Item 7 of our Annual Report on Form 10-K for the fiscal year ended December 31, 2020 filed on
February 16, 2021. 

Comparison of Years Ended December 31, 2021 and 2020

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

dollar change in those items:

Revenue:

Collaboration revenue
Grant revenue

Total revenue
Operating expenses:

Research and development
General and administrative

Total operating expenses
Income (loss) from operations
Other income, net
Net income (loss) before income taxes
Provision for income taxes
Net income (loss)

Years Ended December 31,

2021

2020
(in thousands)

Period-to-
Period Change

$

913,081 $
1,882
914,963

543 $
176
719

912,538
1,706
914,244

438,633
102,802
541,435
373,528
6,003
379,531
(1,870)
377,661 $

266,946
88,208
355,154
(354,435)
6,379
(348,056)
(809)
(348,865) $

171,687
14,594
186,281
727,963
(376)
727,587
(1,061)
726,526

$

117

Collaboration Revenue

Collaboration revenue was $913.1 million for the year ended December 31, 2021, compared to $0.5 million for the year ended 

December 31, 2020. The increase of $912.6 million was primarily due to a $900.0 million upfront payment in connection with the 
A&R Vertex JDCA, as well as the achievement of a $12.5 million milestone under the 2019 Collaboration Agreement with Vertex, of 
which $12.0 million was recorded as revenue in 2021. Refer to Note 9 of the notes to our consolidated financial statements included in
this Annual Report on Form 10-K for a description of revenue recognized related to Vertex.  

Grant Revenue

Grant revenue was $1.9 million and $0.2 million, respectively, for the years ended December 31, 2021 and 2020.  

Research and Development Expenses

Research and development expenses were $438.6 million for the year ended December 31, 2021, compared to $266.9 million 

for the year ended December 31, 2020. The increase of $171.7 million was primarily attributable to the following:

•

•

•

•

$93.9 million of increased variable research and development costs;

$32.0 million of increased facility-related expenses;

$47.0 million of increased employee compensation, benefit and other headcount related expenses, of which $24.6 million 
is increased stock-based compensation expense, primarily due to an increase in headcount to support overall growth; 
offset by

$5.0 million of incentives and credits.

General and Administrative Expenses

General and administrative expenses were $102.8 million for the year ended December 31, 2021, compared to $88.2 million for 

the year ended December 31, 2020.  The increase of $14.6 million was primarily attributable to the following: 

•

•

•

$13.5 million of increased employee compensation, benefit and other headcount related expenses, of which $11.8 million 
is increased stock-based compensation expense, primarily due to an increase in headcount to support overall growth;  

$2.2 million of increased intellectual property costs; offset by

$0.9 million of incentives and credits.   

Other income, net

Other income, net, was $6.0 million for the year ended December 31, 2021, compared to $6.4 million for the year ended 
December 31, 2020. Other income, net, for the year ended December 31, 2021 consisted primarily of interest income earned on cash, 
cash equivalents and marketable securities during the year. 

Liquidity and Capital Resources

Sources of Liquidity

As of December 31, 2021, we had cash, cash equivalents and marketable securities of approximately $2,379.1 million, of which 

$434.0 million was held outside of the United States.

With our cash on hand as of December 31, 2021, we expect cash and cash equivalents to be sufficient to fund our current 

operating plan through at least the next 24 months. 

We have predominantly incurred losses and cumulative negative cash flows from operations since our inception, and as of 
December 31, 2021, we had an accumulated deficit of $195.9 million. We anticipate that we will continue to incur losses for at least 
the next several years. We expect that our research and development and general and administrative expenses will continue to increase 
and, as a result, we will need additional capital to fund our operations, which we may raise through public or private equity or debt 
financings, strategic collaborations, or other sources.

118

Since our initial public offering, we have primarily financed our operations through common share issuances and collaboration

agreements with strategic partners. Recent sources of equity financing include:

Public Offerings

•

•

In November 2019, we sold 4.9 million common shares through an underwritten public offering (inclusive of shares sold 
pursuant to the exercise of the underwriters’ option to purchase additional shares) at a public offering price of $64.50 per 
share for aggregate net proceeds of $297.4 million, which were net of equity issuance costs of $17.8 million.  Additional 
equity issuance costs of $3.0 million for stamp taxes were also paid in 2019. 

In July 2020, we sold 7.4 million common shares through an underwritten public offering (inclusive of shares sold 
pursuant to the exercise of the underwriters’ option to purchase additional shares) at a public offering price of $70.00 per 
share for aggregate net proceeds of $489.7 million, which were net of equity issuance costs of $27.6 million. Additional 
equity issuance costs of $4.9 million for stamp taxes were accrued as of December 31, 2020 and paid in 2021. 

At-the-Market Offerings

•

•

•

•

•

In the first quarter of 2019, we began to issue and sell securities under an Open Market Sale AgreementSM entered into 
with Jefferies LLC, or Jefferies, in August 2018 under which we were able to offer and sell, from time to time, common
shares having aggregate gross proceeds of up to $125.0 million, or the 2018 ATM. During the year ended December 31, 
2019, we issued and sold an aggregate of 2.8 million common shares at an average price of $44.38 per share for aggregate 
net proceeds of $120.6 million, which were net of equity issuance costs of $4.4 million. In addition, we paid 
approximately $0.9 million in stamp taxes during the year ended December 31, 2019 and accrued an additional $0.3 
million for stamp taxes as of December 31, 2019, which were paid in 2020.

In August 2019, we entered into a new Open Market Sale AgreementSM with Jefferies under which we are able to offer 
and sell, from time to time at our sole discretion through Jefferies, as our sales agent, our common shares, or the August 
2019 Sales Agreement. In August 2019, we filed a prospectus supplement with the SEC to offer and sell, from time to 
time, common shares having aggregate gross proceeds of up to $200.0 million, or the 2019 ATM. In connection with our 
entry into the August 2019 Sales Agreement, our August 2018 Open Market Sale AgreementSM with Jefferies was 
mutually terminated by us and Jefferies. During the year ended December 31, 2020, we issued and sold an aggregate of 
2.2 million common shares under the 2019 ATM at an average price of $89.47 per share for aggregate proceeds of $195.5
million, which were net of equity issuance costs of $4.5 million.

In December 2020, in connection with the August 2019 Sales Agreement, we filed a prospectus supplement with the SEC 
to offer and sell from time to time common shares having aggregate gross proceeds of up to $350.0 million, or the 2020 
ATM. During the year ended December 31, 2020, we issued and sold an aggregate of 1.8 million common shares under 
the 2020 ATM at an average price of $169.57 per share for aggregate proceeds of $298.0 million, which were net of 
equity issuance costs of $4.5 million. Additional equity issuance costs for stamp taxes related to shares sold in 2020 
related to the 2019 and 2020 ATM were $4.9 million, of which $4.0 million was accrued as of December 31, 2020 and 
paid in 2021.

In January 2021, we issued and sold under the 2020 ATM an aggregate of 0.3 million common shares at an average price 
of $162.46 per share with aggregate proceeds of $46.7 million, which were net of equity issuance costs of $0.7 million. 
An additional $0.5 million of stamp taxes on this amount was paid in 2021.   

In January 2021, in connection with the August 2019 Sales Agreement, we filed a prospectus supplement with the SEC to
offer and sell from time to time common shares having aggregate gross proceeds of up to $600.0 million.  As of 
December 31, 2021, we have issued and sold an aggregate of 1.1 million common shares under the 2021 ATM at an 
average price of $169.82 per share for aggregate proceeds of $177.8 million, which were net of equity issuance costs of 
$2.4 million. An additional $1.8 million of stamp taxes on this amount was paid in 2021.

119

Sources of Liquidity 

Cash Flows

Discussions of 2019 items and year-to-year comparisons between 2020 and 2019 that are not included in this Form 10-K can be 

found in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” Part II, Item 7 of our Annual
Report on Form 10-K for the fiscal year ended December 31, 2020 filed on February 16, 2021.

The following table provides information regarding our cash flows for each of the periods below:

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

(Decrease) increase in cash and restricted cash

Years Ended December 31,
2020
2021

(in thousands)

$

$

$

538,972
(1,035,430)
250,945
(11)

(245,524) $

(238,366)
(541,170)
1,016,152
40
236,656

Operating Activities

Net cash provided by operating activities was $538.9 million for the year ended December 31, 2021, compared to cash used in 

operating activities of $238.4 million for the year ended December 31, 2020.  The $777.3 million increase in cash provided by
operating activities was primarily driven by an increase in net income of $726.5 million, from a net loss of $348.9 million for the year 
ended December 31, 2020 to net income of $377.7 million for the year ended December 31, 2021.  The increase in net income is 
primarily driven by a $900.0 million upfront payment from Vertex in connection with the A&R Vertex JDCA, which, among other 
things, granted Vertex an exclusive worldwide license and an additional 10% economic interest in the CTX001 program and the right 
to control development and commercialization of CTX001, as well as a $12.5 million payment from Vertex related to a milestone 
under the 2019 Collaboration Agreements which was achieved in the fourth quarter of 2021. Additionally, non-cash expense increased 
$57.4 million, primarily related to stock-based compensation expense, depreciation and net amortization of premiums and discounts 
on marketable securities. The increase was offset by increased spending in our clinical and pre-clinical programs and increased payroll 
and payroll-related expenses to support overall growth.

Investing Activities

Net cash used in investing activities for the year ended December 31, 2021 was $1,035.4 million and consisted of purchases of 
marketable securities, net of maturities, of $953.7 million, as well as $81.7 million in purchases of property and equipment for use in
research and development activities.

Financing Activities 

Net cash provided by financing activities for the year ended December 31, 2021 was $250.9 million and consisted of net 
proceeds of $213.2 million from the issuance of common shares in connection with our 2021 ATM, as well as net proceeds of $37.7 
million from stock option exercises and ESPP contributions.

Funding Requirements 

Our primary uses of capital are, and we expect will continue to be, research and development activities, compensation and 
related expenses, laboratory and related supplies, legal and other regulatory expenses, patent prosecution filing and maintenance costs
for our licensed intellectual property and general overhead costs, including costs associated with operating as a public company. We 
expect our expenses to increase compared to prior periods in connection with our ongoing activities, particularly as we continue 
research and development and preclinical and clinical activities and initiate preclinical studies to support initial drug applications. We
also anticipate that we will incur significant capital expenditures as we develop our manufacturing infrastructure and facilities.

Because our research programs are still in early stages of development and the outcome of these efforts is uncertain, we cannot 

estimate the actual amounts necessary to successfully complete the development and commercialization of any current or future 
product candidates, if approved, or whether, or when, we may achieve profitability. Until such time as we can generate substantial 
product revenues, if ever, we expect to finance our cash needs through a combination of equity financings, debt financings and 
payments received in connection with our collaboration agreements. We are eligible to earn payments, in each case, on a per-product 

120

basis under our collaboration with Vertex. Except for this source of funding, we do not have any committed external source of 
liquidity. We intend to consider opportunities to raise additional funds through the sale of equity or debt securities when market 
conditions are favorable to us to do so. However, including as a result of the coronavirus pandemic, the trading prices for our common 
shares and other biopharmaceutical companies have been highly volatile. As a result, we may face difficulties raising capital through
sales of our common shares or such sales may be on unfavorable terms. In addition, a recession, depression or other sustained adverse 
market event, including resulting from the spread of the coronavirus, could materially and adversely affect our business and the value 
of our common shares. To the extent that we raise additional capital through the future sale of equity or debt securities, the ownership
interests of our shareholders will be diluted, and the terms of these securities may include liquidation or other preferences that 
adversely affect the rights of our existing shareholders. If we raise additional funds through collaboration arrangements in the future, 
we may have to relinquish valuable rights to our technologies, future revenue streams or product candidates or grant licenses on terms 
that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings when needed, we may be
required to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop
and market product candidates that we would otherwise prefer to develop and market ourselves.

Outlook 

Based on our research and development plans and our timing expectations related to the progress of our programs, we expect 

our existing cash will enable us to fund our operating expenses and capital expenditures for at least the next 24 months without giving
effect to any additional proceeds we may receive under our collaboration with Vertex and any other capital raising transactions we
may complete. We have based this estimate on assumptions that may prove to be wrong, and we could use our capital resources
sooner than we expect. Given our need for additional financing to support the long-term clinical development of our programs, we
intend to consider additional financing opportunities when market terms are favorable to us.

Our ability to generate revenue and achieve profitability depends significantly on our success in many areas, including: 
developing our delivery technologies and our gene-editing technology platform; selecting appropriate product candidates to develop; 
completing research and preclinical and clinical development of selected product candidates; obtaining regulatory approvals and 
marketing authorizations for product candidates for which we complete clinical trials; developing a sustainable and scalable 
manufacturing process for product candidates; launching and commercializing product candidates for which we obtain regulatory 
approvals and marketing authorizations, either directly or with a collaborator or distributor; obtaining market acceptance of our 
product candidates, if approved; addressing any competing technological and market developments; negotiating favorable terms in any 
collaboration, licensing or other arrangements into which we may enter; maintaining good relationships with our collaborators and 
licensors; maintaining, protecting and expanding our estate of intellectual property rights, including patents, trade secrets and know-
how; and attracting, hiring and retaining qualified personnel.

Contractual and Other Obligations

Operating lease and sublease obligations

Our operating lease obligations primarily consist of lease payments on our research and office facilities in Cambridge, 

Massachusetts, as well as lease payments on our cell manufacturing facility in Framingham, Massachusetts, and lease payments on an 
office and laboratory facility in Boston, Massachusetts, which are described in further detail in Note 7 of our consolidated financial 
statements included in this Annual Report on Form 10-K. Future contractual payments on operating lease and sublease obligations due 
within one year of December 31, 2021 are $18.3 million, and future contractual payments on operating lease and sublease obligations 
due greater than one year from December 31, 2021 are $333.5 million.

Other obligations

Under the Invention Management Agreement signed on December 15, 2016, we are obligated to share costs related to patent 

maintenance, defense and prosecution for the CRISPR/Cas9 gene-editing intellectual property with California, Vienna and their 
licensees including Caribou, and Caribou’s licensee Intellia Therapeutics. Such costs are not quantifiable at this time.

In the normal course of business, we enter into agreements with contract research organizations for clinical trials and clinical 

supply manufacturing and with vendors for pre-clinical research studies and other services and products for operating purposes.  These
contracts are generally cancelable at any time by us upon less than 180 days’ prior written notice. Certain of these agreements require 
us to pay milestones to such third parties upon achievement of certain development, regulatory or commercial milestones as further 
described in Note 8 of our consolidated financial statements included in this Annual Report on Form 10-K. Amounts related to 
contingent milestone payments are not considered contractual obligations as they are contingent on the successful achievement of 
certain development, regulatory approval and commercial milestones, which may not be achieved.

121

We also have obligations to make future payments to third parties that become due and payable on the achievement of certain 

milestones, including future payments to third parties with whom we have entered into research, development and commercialization 
agreements. We have not included these commitments on our balance sheet because the achievement and timing of these milestones is 
not fixed and determinable.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk. 

Interest Rate Sensitivity

We are exposed to market risk related to changes in interest rates. As of December 31, 2021, we had cash, cash equivalents and 

marketable securities of $2,379.1 million, primarily invested in U.S. treasury securities and government agency securities, corporate 
bonds, commercial paper and money market accounts invested in U.S. government agency securities. Due to the conservative nature
of these instruments, we do not believe that we have a material exposure to interest rate risk. If interest rates were to increase or 
decrease by 1%, the fair value of our investment portfolio would increase or decrease by an immaterial amount.

Foreign Currency Exchange Rate Risk 

As a result of our foreign operations, we face exposure to movements in foreign currency exchange rates, primarily the Swiss

Franc and British Pound, against the U.S. dollar. The current exposures arise primarily from cash, accounts payable and intercompany 
receivables and payables. Changes in foreign exchange rates affect our consolidated statement of operations and distort comparisons
between periods. To date, foreign currency transaction gains and losses have not been material to our financial statements, and we 
have not engaged in any foreign currency hedging transactions.

Item 8. Financial Statements and Supplementary Data.

The consolidated financial statements required to be filed pursuant to this Item 8 are appended to this report. An index of those

financial statements is found in Item 15. 

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

None.

122

Item 9A. Controls and Procedures. 

Evaluation of Disclosure Controls and Procedures

Our chief executive officer and chief financial officer, after evaluating the effectiveness of our disclosure controls and 

procedures (as defined in Rule 13a-15(e) and Rule 15d-15(e) promulgated under the Securities Exchange Act of 1934, as amended) as
of the end of the period covered by this Annual Report on Form 10-K, have concluded that, based on such evaluation, our disclosure 
controls and procedures were effective. In designing and evaluating the disclosure controls and procedures, our management 
recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of 
achieving the desired control objectives, and our management necessarily was required to apply its judgment in evaluating the cost-
benefit relationship of possible controls and procedures.

Management's Annual Report on Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control 

over financial reporting is defined in Rule 13a-15(f) and Rule 15d-15(f) promulgated under the Securities Exchange Act of 1934, as
amended, as a process designed by, or under the supervision of, our principal executive and principal financial officers and effected by 
our Board of Directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial
reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting
principles. Our internal control over financial reporting includes those policies and procedures that:

•

•

•

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

Our management assessed the effectiveness of the Company’s internal control over financial reporting as of December 31, 2021. 

In making this assessment, it used the criteria set forth in the Internal Control—Integrated Framework issued by the Committee of 
Sponsoring Organizations of the Treadway Commission (2013 framework)(COSO). Based on its assessment, our management has
concluded that, as of December 31, 2021, the Company’s internal control over financial reporting is effective based on those criteria.

Our independent registered public accounting firm, Ernst & Young LLP, issued an attestation report on our internal control over 

financial reporting.  See below.

Changes in Internal Control Over Financial Reporting

There have been no changes in our internal control over financial reporting, as such term is defined in Rules 13a-15(f) and 
15(d)-15(f) promulgated under the Securities Exchange Act of 1934, during the fourth quarter of 2021 that have materially affected, or 
are reasonably likely to materially affect, our internal control over financial reporting.

123

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Shareholders and the Board of Directors of CRISPR Therapeutics AG

Opinion on Internal Control Over Financial Reporting 

We  have  audited  CRISPR  Therapeutics  AG’s  internal  control  over  financial  reporting  as  of  December  31,  2021,  based  on  criteria
established  in  Internal  Control—Integrated  Framework  issued  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway 
Commission (2013 framework) (the COSO criteria). In our opinion, CRISPR Therapeutics AG (the Company) maintained, in all material
respects, effective internal control over financial reporting as of December 31, 2021, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), 
the consolidated balance sheets of the Company as of December 31, 2021 and 2020, the related consolidated statements of operations 
and comprehensive income (loss), shareholders’ equity and cash flows for each of the three years in the period ended December 31, 
2021, and the related notes and our report dated February 15, 2022 expressed an unqualified opinion thereon.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of 
the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control 
over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based 
on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company 
in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission
and the PCAOB. 

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to
obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.
Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness
exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such 
other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion. 

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of 
financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting 
principles.  A  company’s  internal  control  over  financial  reporting  includes  those  policies  and  procedures  that  (1)  pertain  to  the 
maintenance  of  records  that,  in  reasonable  detail,  accurately  and  fairly  reflect  the  transactions  and  dispositions  of  the  assets  of  the
company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in
accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in 
accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention 
or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the
financial statements.

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

/s/ Ernst & Young LLP

Boston, Massachusetts

February 15, 2022

124

Item 9B. Other Information. 

None.

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections. 

Not applicable.

125

Item 10. Directors, Executive Officers and Corporate Governance. 

PART III

The information required by this item is incorporated by reference to our Proxy Statement for our 2022 Annual General Meeting

of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2021.

Item 11. Executive Compensation. 

The information required by this item is incorporated by reference to our Proxy Statement for our 2022 Annual General Meeting

of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2021.

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

The information required by this item is incorporated by reference to our Proxy Statement for our 2022 Annual Meeting of 

Stockholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2021.

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

The information required by this item is incorporated by reference to our Proxy Statement for our 2022 Annual General Meeting

of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2021.

Item 14. Principal Accounting Fees and Services. 

The information required by this item is incorporated by reference to our Proxy Statement for our 2022 Annual General Meeting

of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2021.

126

Item 15. Exhibits, Financial Statement Schedules.

(a)(1) Financial Statements.

PART IV

See the “Index to Consolidated Financial Statements” on page F-1 below for the list of financial statements filed as part of this

report.

Schedules other than that listed above have been omitted because of the absence of conditions under which they are required or 

because the required information is included in the financial statements or the notes thereto.

(a)(2) Exhibits.

The exhibits listed in the Exhibit Index below are filed or incorporated by reference as part of this Annual Report on Form 10-K.

Exhibit
Number

3.1

4.1*

10.1†

10.2†

10.3†

10.4

10.5#

10.6#

10.7#

Exhibit Index 

Description

Amended and Restated Articles of Association of CRISPR Therapeutics AG, dated June 10, 2021 (incorporated herein 
by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed on June 14, 2021).

Description of Capital Shares

License Agreement, dated April 15, 2014, by and between CRISPR Therapeutics AG and Emmanuelle Marie 
Charpentier (incorporated herein by reference to Exhibit 10.5 to the Company’s Registration Statement on Form S-1
filed on October 7, 2016).

License Agreement, dated April 15, 2014, by and between TRACR Hematology Limited and Emmanuelle Marie 
Charpentier (incorporated herein by reference to Exhibit 10.6 to the Company’s Registration Statement on Form S-1
filed on October 7, 2016).

Patent Assignment Agreement, dated November 7, 2014, by and between CRISPR Therapeutics AG, Emmanuelle 
Marie Charpentier, the University of Vienna and Ines Fonfara (incorporated herein by reference to Exhibit 10.7 to the
Company’s Registration Statement on Form S-1 filed on October 7, 2016).

Form of Indemnification Agreement (incorporated herein by reference to Exhibit 10.8 to the Company’s Registration
Statement on Form S-1 filed on October 7, 2016).

Employment Agreement, dated December 1, 2017, by and between CRISPR Therapeutics AG and Rodger Novak 
(incorporated herein by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed on December 21,
2017).

Mandate Agreement, dated December 27, 2019, by and between CRISPR Therapeutics AG and Oriolus Consulting
LLC (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on 
December 27, 2019).

Termination Agreement, dated December 27, 2019, by and between CRISPR Therapeutics AG and Rodger Novak 
(incorporated herein by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed on December 27,
2019).

127

10.8#

10.9#

10.10#

10.11#

10.12#

10.13#

10.14#

10.14.1#

10.14.2#

10.14.3#

10.14.4#

10.14.5#

10.14.6#

10.15#

10.15.1#

10.15.2#

10.15.3#

Second Amended and Restated Employment Agreement, dated October 2, 2017, by and between CRISPR Therapeutics, 
Inc. and Samarth Kulkarni (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form
8-K filed on October 2, 2017).

Employment Agreement, dated May 31, 2017, by and between CRISPR Therapeutics, Inc. and James R. Kasinger 
(incorporated herein by reference to Exhibit 10.16 to the Company’s Annual Report on Form 10-K filed on March 8,
2018).

Employment Agreement, dated January 2, 2019, by and between CRISPR Therapeutics, Inc. and Lawrence Klein 
(incorporated herein by reference to Exhibit 10.16 to the Company’s Annual Report on Form 10-K filed on February
25, 2019).

Employment Agreement, dated October 14, 2021, by and between CRISPR Therapeutics, Inc. and Brendan Smith 
(incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on October 14,
2021).

Senior Executive Cash Incentive Bonus Plan (incorporated herein by reference to Exhibit 10.26 to the Company’s 
Annual Report on Form 10-K filed on March 8, 2018).

CRISPR Therapeutics AG 2015 Stock Option and Grant Plan (incorporated herein by reference to Exhibit 10.14 to the 
Company’s Registration Statement on Form S-1 filed on September 9, 2016).

CRISPR Therapeutics AG Amended and Restated 2016 Stock Option and Incentive Plan (incorporated herein by 
reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on June 2, 2017).

Form of Incentive Stock Option Agreement under CRISPR Therapeutics AG’s Amended and Restated 2016 Stock 
Option and Incentive Plan (incorporated herein by reference to Exhibit 10.2 to the Company’s Current Report on Form
10-Q filed on November 8, 2017).

Form of Non-Qualified Stock Option Agreement for Company Employees under CRISPR Therapeutics AG’s Amended 
and Restated 2016 Stock Option and Incentive Plan (incorporated herein by reference to Exhibit 10.3 to the Company’s 
Current Report on Form 10-Q filed on November 8, 2017).

Form of Non-Qualified Stock Option Agreement for Non-Employee Directors under CRISPR Therapeutics AG’s
Amended and Restated 2016 Stock Option and Incentive Plan (incorporated herein by reference to Exhibit 10.4 to the
Company’s Current Report on Form 10-Q filed on November 8, 2017).

Form of Restricted Stock Award Agreement under CRISPR Therapeutics AG’s Amended and Restated 2016 Stock 
Option and Incentive Plan (incorporated herein by reference to Exhibit 10.5 to the Company’s Current Report on Form
10-Q filed on November 8, 2017).

Form of Restricted Stock Award Agreement for Company Employees under CRISPR Therapeutics AG’s Amended and 
Restated 2016 Stock Option and Incentive Plan (incorporated herein by reference to Exhibit 10.6 to the Company’s 
Current Report on Form 10-Q filed on November 8, 2017).

Form of Restricted Stock Award Agreement for Non-Employee Directors under CRISPR Therapeutics AG’s Amended 
and Restated 2016 Stock Option and Incentive Plan (incorporated herein by reference to Exhibit 10.7 to the Company’s 
Current Report on Form 10-Q filed on November 8, 2017).

CRISPR Therapeutics AG 2018 Stock Option and Incentive Plan and forms of agreements thereunder (incorporated 
herein by reference to Exhibit 99.1 to the Company’s Registration Statement on Form S-8 filed on June 1, 2018).

Form of Incentive Stock Option Agreement under CRISPR Therapeutics AG’s 2018 Stock Option and Incentive Plan 
(incorporated herein by reference to Exhibit 99.2 to the Company’s Registration Statement on Form S-8 filed on June 1,
2018).

Form of Non-Qualified Stock Option Agreement for Company Employees under CRISPR Therapeutics AG’s 2018 
Stock Option and Incentive Plan (incorporated herein by reference to Exhibit 99.3 to the Company’s Registration 
Statement on Form S-8 filed on June 1, 2018).

Form of Non-Qualified Stock Option Agreement for Non-Employee Directors under CRISPR Therapeutics AG’s 2018
Stock Option and Incentive Plan (incorporated herein by reference to Exhibit 99.4 to the Company’s Registration 
Statement on Form S-8 filed on June 1, 2018).

128

10.15.4#

10.15.5#

10.15.6#

10.16#

10.17#

10.18#

10.19†

10.20†

10.21†

10.22†

10.23†

10.24†

10.25†^

10.26†

Form of Restricted Stock Award under CRISPR Therapeutics AG’s 2018 Stock Option and Incentive Plan (incorporated 
herein by reference to Exhibit 99.5 to the Company’s Registration Statement on Form S-8 filed on June 1, 2018).

Form of Restricted Stock Award Agreement for Company Employees under CRISPR Therapeutics AG’s 2018 Stock 
Option and Incentive Plan (incorporated herein by reference to Exhibit 99.6 to the Company’s Registration Statement 
on Form S-8 filed on June 1, 2018).

Form of Restricted Stock Award for Non-Employee Directors under CRISPR Therapeutics AG’s 2018 Stock Option
and Incentive Plan (incorporated herein by reference to Exhibit 99.7 to the Company’s Registration Statement on Form 
S-8 filed on June 1, 2018).

Amendment No.1 to the 2018 Stock Option and Incentive Plan (incorporated herein by reference to Appendix A to the 
Company’s Definitive Proxy Statement on Schedule 14A filed on April 30, 2019).

Amendment No.2 to the 2018 Stock Option and Incentive Plan (incorporated herein by reference to Appendix A to the 
Company’s Definitive Proxy Statement on Schedule 14A filed on April 24, 2020).

CRISPR Therapeutics AG 2016 Employee Stock Purchase Plan (incorporated herein by reference to Exhibit 10.16 to
the Company’s Registration Statement on Form S-1 filed on September 9, 2016).

Consent to Assignments, Licensing and Common Ownership and Invention Management Agreement for a
Programmable DNA Restriction Enzyme for Genome Editing, dated December 15, 2016, by and among CRISPR 
Therapeutics AG, The Regents of the University of California, University of Vienna, Dr. Emmanuelle Charpentier,
Intellia Therapeutics, Inc., Caribou Biosciences, Inc., ERS Genomics Ltd., and TRACR Hematology Ltd. (incorporated 
herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on December 16, 2016).

Strategic Collaboration, Option and License Agreement, dated October 26, 2015, by and among CRISPR Therapeutics 
AG, CRISPR Therapeutics Limited, CRISPR Therapeutics, Inc., TRACR Hematology Limited, Vertex 
Pharmaceuticals, Incorporated and Vertex Pharmaceuticals (Europe) Limited (incorporated herein by reference to 
Exhibit 10.4 to the Company’s Registration Statement on Form S-1 filed on October 7, 2016).

Amendment No. 1 to the Strategic Collaboration, Option and License Agreement by and between, on the one hand, 
Vertex Pharmaceuticals Incorporated and Vertex Pharmaceuticals (Europe) Limited, and on the other hand, CRISPR 
Therapeutics AG, CRISPR Therapeutics, Inc., CRISPR Therapeutics Limited and TRACR Hematology Ltd., dated as of 
December 12, 2017 (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed on
December 18, 2017).

Amendment No. 2 to the Strategic Collaboration, Option and License Agreement by and between, on the one hand, 
Vertex Pharmaceuticals Incorporated and Vertex Pharmaceuticals (Europe) Limited, and on the other hand, CRISPR 
Therapeutics AG, CRISPR Therapeutics, Inc., CRISPR Therapeutics Limited and TRACR Hematology Ltd., dated as of 
June 6, 2019 (incorporated herein by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q filed 
on July 29, 2019).

Strategic Collaboration and License Agreement dated June 6, 2019, between CRISPR Therapeutics AG and Vertex 
Pharmaceuticals Incorporated (incorporated herein by reference to Exhibit 10.2 to the Company’s Quarterly Report on
Form 10-Q filed on July 29, 2019).

First Amendment to the Strategic Collaboration and License Agreement dated March 17, 2021, between CRISPR 
Therapeutics AG and Vertex Pharmaceuticals Incorporated (incorporated herein by reference to Exhibit 10.3 to the
Company’s Quarterly Report on Form 10-Q filed on April 27, 2021).

Amended and Restated Joint Development and Commercialization Agreement between, on the one hand, Vertex
Pharmaceuticals Incorporated and Vertex Pharmaceuticals (Europe) Limited, and on the other hand, CRISPR 
Therapeutics AG, CRISPR Therapeutics Limited, CRISPR Therapeutics, Inc., and TRACR Hematology Ltd., dated as
of April 16, 2021 (incorporated herein by reference to Exhibit 10.4 to the Company’s Quarterly Report on Form 10-Q
filed on April 27, 2021).

Joint Venture Termination Agreement, dated December 13, 2019, among Bayer Healthcare LLC (and certain affiliates
of Bayer Healthcare LLC for purposes of Article II), CRISPR Therapeutics AG (and certain subsidiaries of CRISPR 
Therapeutics AG for purposes of Article II), and Casebia Therapeutics Limited Liability Partnership (incorporated 
herein by reference to Exhibit 10.29 to the Company’s Annual Report on Form 10-K filed on February 12, 2020).

129

10.27†

10.28†

10.29

10.30†

Retirement Agreement, dated December 13, 2019, among Casebia Therapeutics Limited Liability Partnership, Bayer 
HealthCare LLC, CRISPR Therapeutics AG and CRISPR Therapeutics, Inc. (incorporated herein by reference to
Exhibit 10.30 to the Company’s Annual Report on Form 10-K filed on February 12, 2020).

Option Agreement, dated December 13, 2019, between CRISPR Therapeutics AG and Bayer HealthCare LLC 
(incorporated herein by reference to Exhibit 10.31 to the Company’s Annual Report on Form 10-K filed on February
12, 2020).

Consent to Sublease, dated May 16, 2016, by and between CRISPR Therapeutics, Inc. and Pfizer Inc. (incorporated 
herein by reference to Exhibit 10.17 to the Company’s Registration Statement on Form S-1 filed on September 9, 2016).

Assignment of Sublease and Sub-Sublease, dated December 13, 2019, between Casebia Therapeutics LLC and CRISPR 
Therapeutics, Inc. (incorporated herein by reference to Exhibit 10.32 to the Company’s Annual Report on Form 10-K 
filed on February 12, 2020).

10.31†^

Letter Agreement dated April 29, 2021 by and between CRISPR Therapeutics, Inc. and Pfizer Inc. (incorporated herein
by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q filed on July 29, 2021).

10.32†*

Letter Agreement dated December 16, 2021 by and between CRISPR Therapeutics, Inc. and Pfizer Inc.

10.33^

10.34^

10.35^

10.36†

10.37*

21.1*

23.1*

31.1*

31.2*

32.1+

Lease, dated May 5, 2020, by and between CRISPR Therapeutics, Inc. and CRP/KING 33 NY AVE. OWNER, L.L.C. 
(incorporated herein by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q filed on April 27, 
2021).

First Amendment to Lease dated December 2, 2020, by and between CRISPR Therapeutics, Inc. and CRP/KING 33 NY 
AVE. OWNER, L.L.C. (incorporated herein by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form
10-Q filed on April 27, 2021).

Second Amendment to Lease dated April __, 2021, by and between CRISPR Therapeutics, Inc. and 33 NYA OWNER 
(DE) LLC, as successor in interest to CRP/KING 33 NY AVE. OWNER, L.L.C. (incorporated herein by reference to
Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q filed on July 29, 2021).

Lease, dated July 24, 2020, by and between CRISPR Therapeutics, Inc. and 105 W First Street Owner, L.L.C. 
(incorporated herein by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q filed on July 27,
2020).

Letter Agreement dated January 6, 2022, by and between CRISPR Therapeutics, Inc. and 105 W First Street Owner, 
L.L.C.

Subsidiaries of the Registrant

Consent of Ernst & Young LLP

Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange
Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange
Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Certification of Principal Executive Officer and Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as
Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

130

101.INS

Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because XBRL
tags are embedded within the Inline XBRL document.

101.SCH

Inline XBRL Taxonomy Extension Schema Document

101.CAL

Inline XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF

Inline XBRL Taxonomy Extension Definition Linkbase Document

101.LAB

Inline XBRL Taxonomy Extension Label Linkbase Document

101.PRE

Inline XBRL Taxonomy Extension Presentation Linkbase Document

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

* Filed herewith.
+ Furnished herewith.
† Certain portions of this exhibit have been omitted because they are not material and the registrant customarily and actually treats that 
information as private or confidential.
# A management contract or compensatory plan or arrangement required to be filed as an exhibit pursuant to Item 15(a)(3) of Form 
10-K.
^ Certain exhibits and schedules to these agreements have been omitted pursuant to Item 601 of Regulation S-K. The registrant will 
furnish copies of any of the exhibits and schedules to the Securities and Exchange Commission upon request.

Item 16. Form 10-K Summary

None.

131

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this 

Report to be signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Date: February 15, 2022

CRISPR Therapeutics AG

By:

/s/ Samarth Kulkarni
Samarth Kulkarni
Chief Executive Officer

SIGNATURES AND POWER OF ATTORNEY

We, the undersigned directors and officers of CRISPR Therapeutics AG (the “Company”), hereby severally constitute and 

appoint Rodger Novak, Samarth Kulkarni, Brendan Smith and James R. Kasinger, and each of them singly, our true and lawful 
attorneys, with full power to them, and to each of them singly, to sign for us and in our names in the capacities indicated below, any 
and all amendments to this Annual Report on Form 10-K, and to file or cause to be filed the same, with all exhibits thereto and other 
documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys, and each of them,
full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as
fully to all intents and purposes as each of us might or could do in person, and hereby ratifying and confirming all that said attorneys,
and each of them, or their substitute or substitutes, shall do or cause to be done by virtue of this Power of Attorney. 

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this Report has been signed below by the 

following persons on behalf of the Registrant in the capacities and on the dates indicated.

Name

Title

/s/ Samarth Kulkarni
Samarth Kulkarni

Chief Executive Officer and Director
(Principal Executive Officer)

/s/ Brendan Smith
Brendan Smith

/s/ Rodger Novak
Rodger Novak

/s/ Ali Behbahani
Ali Behbahani

/s/ Bradley Bolzon
Bradley Bolzon

/s/ H. Edward Fleming, Jr.
H. Edward Fleming, Jr.

/s/ Simeon J. George
Simeon J. George

/s/ John Greene
John Greene

/s/ Katherine High
Katherine High

/s/ Douglas Treco
Douglas Treco

/s/ Brendan Smith
Brendan Smith

Chief Financial Officer
(Principal Financial and Accounting Officer)

President and Director

Director

Director

Director

Director

Director

Director

Director

Date

February 15, 2022

February 15, 2022

February 15, 2022

February 15, 2022

February 15, 2022

February 15, 2022

February 15, 2022

February 15, 2022

February 15, 2022

February 15, 2022

Authorized Representative in the United States

February 15, 2022

132

CRISPR Therapeutics AG

Index to Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm (PCAOB ID No. 42)
Consolidated Balance Sheets
Consolidated Statements of Operations and Comprehensive Income (Loss)
Consolidated Statements of Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements

Pages

F-1
F-4
F-5
F-6
F-7
F-8

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Shareholders and the Board of Directors of CRISPR Therapeutics AG

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of CRISPR Therapeutics AG (the Company) as of December 31, 2021
and 2020, the related consolidated statements of operations and comprehensive income (loss), shareholders’ equity and cash flows for 
each  of  the  three  years  in  the  period  ended  December  31,  2021,  and  the  related  notes  (collectively  referred  to  as  the  “consolidated 
financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position
of the Company at December 31, 2021 and 2020, and the results of its operations and its cash flows for each of the three years in the
period ended December 31, 2021, in conformity with U.S. generally accepted accounting principles. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), 
the Company’s internal control over financial reporting as of December 31, 2021, based on criteria established in Internal Control—
Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) and our 
report dated February 15, 2022 expressed an unqualified opinion thereon.

Basis for Opinion

These  financial  statements  are  the  responsibility  of  the  Company’s  management.  Our  responsibility  is  to  express  an  opinion  on  the 
Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to 
be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations
of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit 
to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error 
or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding 
the  amounts  and  disclosures  in  the  financial  statements.  Our  audits  also  included  evaluating  the  accounting  principles  used  and 
significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that 
our audits provide a reasonable basis for our opinion.

Critical Audit Matters

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

F-1

Description of the 
Matter

Estimation of Variable Consideration for ongoing Collaboration Agreements  
As discussed in Note 9 to the consolidated financial statements, the Company has multiple ongoing collaboration
agreements which include rights to future payments totaling up to approximately $2.2 billion as of December 31, 
2021 that are payable upon the achievement of various developmental, regulatory and commercial milestones related
to certain programs under development. These future payments represent variable consideration that is included in
the transaction price for these collaboration agreements to the extent that the Company determines it is probable that 
a  significant  revenue  reversal  of  cumulative  revenue  recognized  under  the  contract  will  not  occur.  When  the
Company cannot conclude that it is probable that a significant revenue reversal of cumulative revenue under the 
contract will not occur, the Company constrains the related variable consideration resulting in its exclusion from the
transaction  price.  The  Company’s  estimation  of  variable  consideration  to  be  constrained  impacts  the  reported 
amounts of revenue and deferred revenue within the consolidated financial statements. 

In  determining  the  portion  of  the  transaction  price  to  be  constrained,  management  considers  the  probability  and 
uncertainty of whether the related developmental, regulatory and commercial milestones will be achieved given the 
nature  of  clinical  development  and  the  stage  of  the  underlying  programs.  This  assessment  is  performed  at  each 
reporting period. In making this evaluation, management considers both internal and external information available 
including information from industry publications, the stage of development of the underlying programs and other 
relevant factors. Changes to the constraint of variable consideration can have a material effect on the amount of 
revenue  recognized  in  the  financial  reporting  period.  As  a  result,  auditing  the  accounting  for  the  application  of 
constraint to variable consideration required complex auditor judgement.

How We Addressed 
the Matter in Our 
Audit

We  obtained  an  understanding,  evaluated  the  design  and  tested  the  operating  effectiveness  of  controls  over  the 
Company’s revenue recognition process. For example, we tested controls over management's estimation of the total
transaction price for its collaboration agreements including those related to the application of constraint to variable
consideration associated with future developmental, regulatory and commercial milestones.

To audit the Company’s judgements related to the application of constraint to variable consideration, we performed 
audit procedures that included, among others, evaluating the Company’s judgements related to the probability of 
achieving  the  related  future  developmental,  regulatory  and  commercial  milestones.  To  evaluate  the  Company’s 
estimated probability of achieving developmental, regulatory and commercial milestones, we considered the nature
of clinical development and the stage of development of the underlying programs in relation to relevant external
data and compared the probabilities of achieving the milestones to current industry trends and available information 
from  other  guideline  companies  within  the  same  industry  and  other  relevant  factors.  We  also  discussed  the
probability of achieving the milestones in relation to each program’s phase of development with the Company’s 
research and development managers.

Description of the 
Matter

Revenue  Recognition  for  Collaboration  and  Joint  Development  Agreement  with  Vertex  Pharmaceuticals 
Incorporated
As discussed in Note 9 to the consolidated financial statements, on April 16, 2021 the Company entered into an
amendment to its joint development agreement with Vertex Pharmaceuticals Inc., referred to as the “A&R Vertex
JDCA”, which resulted in a payment of $900 million and the recognition of $900 million of revenue by the Company 
for the year ended December 31, 2021. 

Accounting for the A&R Vertex JDCA required the Company to make certain significant judgements, including the
determination  of  the  standalone  selling  price  of  an  identified  performance  obligation.  The  estimated  standalone 
selling  price  for  an  identified  performance  obligation  reflect  management’s  assumptions  regarding  probability
weighted  projected  discounted  cash  flows  for  an  underlying  collaboration  development  program.  The  estimated 
standalone selling price was sensitive to changes in certain assumptions within the discounted cash flow model such
as the discount rate, and certain assumptions that form the basis of the forecasted cash flows (e.g., price per patient).
In developing these assumptions, management considered both internal and external information available including
information from other guideline companies within the same industry and other relevant factors. Changes to these 
assumptions  can  have  a  material  effect  on  the  estimated  standalone  selling  price  of  the  performance  obligation, 
impacting the amount and timing of revenue recognized. As a result, auditing the estimate of the standalone selling
price for an identified performance obligation required especially complex auditor judgement.

F-2

How We Addressed 
the Matter in Our 
Audit

We  obtained  an  understanding,  evaluated  the  design  and  tested  the  operating  effectiveness  of  controls  over  the 
Company’s revenue recognition process. For example, we tested controls over management's process to determine 
the  significant  assumptions  described  above  with  respect  to  the  estimation  of  the  standalone  selling  price  of  a
performance obligation.

To audit the Company’s revenue recognition related to the A&R Vertex JDCA, we performed audit procedures that 
included,  among  others,  evaluating  management’s  estimate  of  the  standalone  selling  price  of  an  identified 
performance  obligation.  For  example,  we  evaluated  the  probability  weighted  projected  discounted  cash  flow
assumptions used by the Company in developing the estimated standalone selling price by comparing the significant
assumptions described above to current industry trends using available information from other guideline companies 
within  the  same  industry  and  other  relevant  factors.  We  also  performed  a  sensitivity  analysis  of  the  significant 
assumptions  to  evaluate  the  impact  that  the  change  in  the  estimated  standalone  selling  price  of  an  identified 
performance obligation resulting from changes in the significant assumptions would have on the amount and timing 
of revenue recognized during the period. We involved our valuation professionals to assist in the assessment of the
estimation  methodology  and  the  significant  valuation  assumptions  used  in  determining  the  estimated  standalone
selling price of an identified performance obligation.

/s/ Ernst & Young LLP

We have served as the Company’s auditor since 2015.
Boston, Massachusetts
February 15, 2022

F-3

CRISPR Therapeutics AG
Consolidated Balance Sheets
(in thousands, except share and per share data) 

Assets
Current assets:

Cash and cash equivalents
Marketable securities
Accounts receivable
Prepaid expenses and other current assets

Total current assets

Property and equipment, net
Intangible assets, net
Restricted cash
Operating lease assets
Other non-current assets

Total assets

Liabilities and Shareholders’ Equity
Current liabilities:

Accounts payable
Accrued expenses
Deferred revenue, current
Accrued tax liabilities
Operating lease liabilities
Other current liabilities

Total current liabilities

Deferred revenue, non-current
Operating lease liabilities, net of current portion
Other non-current liabilities
Total liabilities

Commitments and contingencies (Note 8)
Shareholders’ equity:

Common shares, CHF 0.03 par value, 145,364,335 and 115,172,786 shares
   authorized at December 31, 2021 and 2020, respectively, 77,170,382 and 
   74,110,160 shares issued at December 31, 2021 and 2020, respectively,
   76,990,066 and 73,914,844 shares outstanding at December 31, 2021 and 2020,
   respectively.
Treasury shares, at cost, 180,316 and 195,316 shares at December 31, 2021
   and 2020, respectively

Additional paid-in capital
Accumulated deficit
Accumulated other comprehensive loss
Total shareholders’ equity
Total liabilities and shareholders’ equity

December 31,

2021

2020

$

$

$

923,031
1,456,098
305
38,079
2,417,513
137,575
125
16,913
174,460
5,291
2,751,877

14,816
91,003
1,011
724
12,158
171
119,883
12,323
212,872
7,339
352,417

1,168,620
521,713
144
26,143
1,716,620
42,160
180
16,848
50,865
1,293
1,827,966

9,094
53,782
2,341
10,473
11,362
7,207
94,259
11,776
50,067
7,630
163,732

2,391

2,277

(63)
2,598,114
(195,915)
(5,067)
2,399,460
2,751,877

$

(63)
2,235,679
(573,576)
(83)
1,664,234
1,827,966

$

$

$

$

See accompanying notes to these consolidated financial statements.

F-4

CRISPR Therapeutics AG
Consolidated Statements of Operations and Comprehensive Income (Loss)
(In thousands, except share and per share data) 

Revenue:

Collaboration revenue (1)
Grant revenue
Total revenue

Operating expenses:

Research and development (2)
General and administrative
Total operating expenses
Income (loss) from operations
Other income (expense):

Loss from equity method investment
Other income, net
Total other income, net

Net income (loss) before income taxes
Provision for income taxes

Net income (loss)

Foreign currency translation adjustment
Unrealized loss on marketable securities

Comprehensive income (loss)

Net income (loss) per common share — basic
Basic weighted-average common shares outstanding
Net income (loss) per common share — diluted
Diluted weighted-average common shares outstanding

(1)  Including the following amounts of revenue from a related party,
see Note 9
(2)  Including the following amounts of research and development from a 
related party, see Note 9

2021

Years Ended December 31,
2020

2019

913,081
1,882
914,963

438,633
102,802
541,435
373,528

—
6,003
6,003
379,531
(1,870)
377,661
(11)
(4,973)
372,677

4.97
75,948,686
4.70
80,393,496

$

$

$

$

$

543
176
719

266,946
88,208
355,154
(354,435)

—
6,379
6,379
(348,056)
(809)
(348,865)
40
(130)
(348,955) $

289,590
—
289,590

179,362
63,488
242,850
46,740

(5,467)
26,033
20,566
67,306
(448)
66,858
15
—
66,873

(5.29) $

65,949,672

(5.29) $

65,949,672

1.23
54,392,304
1.17
56,932,798

— $

— $

— $

746

— $

14,459

$

$

$

$

$

$

See accompanying notes to these consolidated financial statements.

F-5

y
t
i
u
q
E

'
s
r
e
d
l
o
h
e
r
a
h
S
l
a
t
o
T

3
4

5
9
1
,
2
9
3

9
8
7
,
4
1
4

5
1

1
0
0
,
6
1

4
2
5
,
9
4

8
5
8
,
6
6

5
2
4
,
9
3
9

1
8
3
,
3
7
9

7

5
7
7
,
2
3

4
9
6

8
1
0
,
6
6

)
0
9
(

9
8
8

)
5
6
8
,
8
4
3
(

4
3
2
,
4
6
6
,
1

5
1

5
9
0
,
2

4
7
8
,
5
3

5
7
1
,
2
2
2

0
9
3
,
2
0
1

)
4
8
9
,
4
(

1
6
6
,
7
7
3

0
6
4
,
9
9
3
,
2

$
)
8
(

—

—

—

—

5
1

—

$

7

—

—

—

—

—

—

)
0
9
(

—

$
)
3
8
(

—

—

—

—

—

—

)
4
8
9
,
4
(

$
)
7
6
0
,
5
(

d
e
t
a
l
u
m
u
c
c
A

r
e
h
t
O

e
v
i
s
n
e
h
e
r
p
m
o
C

)
s
s
o
L

(

e
m
o
c
n
I

d
e
t
a
l
u
m
u
c
c
A

t
i
c
i
f
e
D

l
a
n
o
i
t
i

d
d
A

n

i
-
d
i
a
P

l
a
t
i

p
a
C

$
)
9
6
5
,
1
9
2
(

$

5
4
2
,
2
8
6

$
)
7
5
(

,
t
n
u
o
m
A

t
s
o
c

t
a

s
e
r
a
h
S

3
0
.
0
F
H
C

e
u
l
a
V
r
a
P

s
e
r
a
h
S
y
r
u
s
a
e
r
T

s
e
r
a
h
S
n
o
m
m
o
C

—

—

—

—

—

8
5
8
,
6
6

$
)
1
1
7
,
4
2
2
(

—

—

—

—

—

—

—

$
)
6
7
5
,
3
7
5
(

)
5
6
8
,
8
4
3
(

—

—

—

—

—

—

$
)
5
1
9
,
5
9
1
(

1
6
6
,
7
7
3

—

—

1
4

6
7
9
,
5
1

4
2
5
,
9
4

9
5
5
,
4
1
4

—

—

)
6
(

—

—

—

$

6
3
9
,
7
0
3

)
7
9
2
,
7
4
(

—

)
3
1
4
,
0
1
(

—

—

—

$

5
4
3
,
2
6
1
,
1

$
)
3
6
(

$

6
2
2
,
0
5
2

—

8
1
7
,
2
3

4
9
6

8
1
0
,
6
6

5
1
0
,
3
7
9

——

—

9
8
8

—

—

—

—

—

—

—

—

—

—

)
0
8
0
,
7
3
(

—

—

—

—

)
0
3
8
,
7
1
(

2

1
3

—

—

—

0
3
2

4
8
5
,
1

6
6
3

7
4
8
,
1

7

7
5

—

—

—

—

—

$

2
6
8
,
2
5
8
,
1
5

8
6
0
,
4
0
7
,
7

9
0
0
,
8
6

0
6
8
,
8
5
1
,
1

s
e
r
a
h
S

—

—

—

$

9
9
7
,
3
8
7
,
0
6

0
5
6
,
4
0
2

6
3
6
,
2
8
4
,
1

9
1
5
,
2
1
4
,
1
1

—

—

—

0
1
4
,
3
1

0
3
8
,
7
1

$

9
7
6
,
5
3
2
,
2

$
)
3
6
(

$

6
1
3
,
5
9
1

7
7
2
,
2

$

4
4
8
,
4
1
9
,
3
7

——

—

0
3
1
,
2
2
2

—

5
9
0
,
2

0
2
8
,
5
3

0
9
3
,
2
0
1

—

—

—

—

—

—

—

—

—

—

—

—

—

)
0
0
0
,
5
1
(

5
4

5
1

4
5

—

—

—

—

—

—

—

0
9
5
,
1
2

1
2
1
,
3
5
3
,
1

0
4
4
,
5
5
4

1
7
0
,
5
4
2
,
1

$

4
1
1
,
8
9
5
,
2

$
)
3
6
(

$

6
1
3
,
0
8
1

1
9
3
,
2

$

6
6
0
,
0
9
9
,
6
7

.
s
t
n
e
m
e
t
a
t
s

l
a
i
c
n
a
n
i
f

d
e
t
a
d
i
l
o
s
n
o
c

e
s
e
h
t

o
t

s
e
t
o
n

g
n
i
y
n
a
p
m
o
c
c
a

e
e
S

G
A
s
c
i
t
u
e
p
a
r
e
h
T
R
P
S
I
R
C

y
t
i

u
q
E

’
s
r
e
d

l
o
h
e
r
a
h
S
f
o

s
t
n
e
m
e
t
a
t
S
d
e
t
a
d

i
l
o
s
n
o
C

)
a
t
a
d
e
r
a
h
s

r
e
p
d
n
a

e
r
a
h
s

t
p
e
c
x
e

,
s
d
n
a
s
u
o
h
t
n
I
(

n
o
i
l
l
i

m
1
5
2
$

.

f
o

s
t
s
o
c

e
c
n
a
u
s
s
i

f
o
t
e
n
,
s
e
r
a
h
s

n
o
m
m
o
c

f
o

e
c
n
a
u
s
s
I

n
o
i
l
l
i

m
3

.

0
$

f
o
s
t
s
o
c

e
c
n
a
u
s
s
i

f
o

t
e
n

,
s
n
o
i
t
p
o

d
e
t
s
e
v

f
o

e
s
i
c
r
e
x
E

s
e
r
a
h
s

d
e
t
c
i
r
t
s
e
r

f
o

g
n
i
t
s
e
V

8
1
0
2
,
1
3

r
e
b
m
e
c
e
D

t
a
e
c
n
a
l
a
B

e
s
n
e
p
x
e

n
o
i
t
a
s
n
e
p
m
o
c

d
e
s
a
b
-
k
c
o
t
S

e
m
o
c
n
i

e
v
i
s
n
e
h
e
r
p
m
o
c

r
e
h
t
O

9
1
0
2
,
1
3

r
e
b
m
e
c
e
D

t
a
e
c
n
a
l
a
B

e
m
o
c
n
i

t
e
N

n
o
i
l
l
i

m
4
6
4
$

.

f
o

s
t
s
o
c

e
c
n
a
u
s
s
i

f
o
t
e
n
,
s
e
r
a
h
s

n
o
m
m
o
c

f
o

e
c
n
a
u
s
s
I

n
o
i
l
l
i

m
2

.

1
$

f
o
s
t
s
o
c

e
c
n
a
u
s
s
i

f
o

t
e
n

,
s
n
o
i
t
p
o

d
e
t
s
e
v

f
o

e
s
i
c
r
e
x
E

s
e
r
a
h
s

d
e
t
c
i
r
t
s
e
r

f
o

g
n
i
t
s
e
V

s
t
n
e
m
e
e
r
g
a

e
s
n
e
c
i
l

r
o
f

k
c
o
t
s

n
o
m
m
o
c

f
o

e
c
n
a
u
s
s
I

P
P
S
E
r
e
d
n
u

k
c
o
t
s

n
o
m
m
o
c

f
o

e
s
a
h
c
r
u
P

e
s
n
e
p
x
e

n
o
i
t
a
s
n
e
p
m
o
c

d
e
s
a
b
-
k
c
o
t
S

s
s
o
l

e
v
i
s
n
e
h
e
r
p
m
o
c

r
e
h
t
O

s
s
o
l

t
e
N

0
2
0
2
,
1
3

r
e
b
m
e
c
e
D

t
a
e
c
n
a
l
a
B

n
o
i
l
l
i

m
4

.

5
$

f
o

s
t
s
o
c

e
c
n
a
u
s
s
i

f
o
t
e
n
,
s
e
r
a
h
s

n
o
m
m
o
c

f
o

e
c
n
a
u
s
s
I

n
o
i
l
l
i

m
6

.

2
$

f
o
s
t
s
o
c

e
c
n
a
u
s
s
i

f
o

t
e
n

,
s
n
o
i
t
p
o

d
e
t
s
e
v

f
o

e
s
i
c
r
e
x
E

s
e
r
a
h
s

d
e
t
c
i
r
t
s
e
r

f
o

g
n
i
t
s
e
V

P
P
S
E
r
e
d
n
u

k
c
o
t
s

n
o
m
m
o
c

f
o

e
s
a
h
c
r
u
P

e
s
n
e
p
x
e

n
o
i
t
a
s
n
e
p
m
o
c

d
e
s
a
b
-
k
c
o
t
S

s
s
o
l

e
v
i
s
n
e
h
e
r
p
m
o
c

r
e
h
t
O

e
m
o
c
n
i

t
e
N

1
2
0
2
,
1
3

r
e
b
m
e
c
e
D

t
a
e
c
n
a
l
a
B

F-6

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CRISPR Therapeutics AG
Consolidated Statements of Cash Flows 
(In thousands) 

Operating activities
Net income (loss)
Reconciliation of net income (loss) to net cash used in operating activities:

Depreciation and amortization
Equity-based compensation
Loss from equity method investment in Casebia
Gain from consolidation of Casebia
Net amortization of premiums and discounts on marketable securities

Changes in:

Accounts receivable
Prepaid expenses and other assets
Accounts payable and accrued expenses
Deferred revenue
Operating lease assets and liabilities
Other liabilities, net

Net cash provided by (used in) operating activities

Investing activities

Purchase of property, plant and equipment
Net cash and restricted cash received in connection with the acquisition
  of Casebia
Purchases of marketable securities
Maturities of marketable securities

Net cash (used in) provided by investing activities

Financing activities

Proceeds from issuance of common shares, net of issuance costs
Proceeds from exercise of options and ESPP contributions, net of issuance costs

Net cash provided by financing activities

Effect of exchange rate changes on cash

(Decrease) increase in cash

Cash, cash equivalents and restricted cash, beginning of period
Cash, cash equivalents and restricted cash, end of period

Supplemental disclosure of non-cash investing and financing activities
Property and equipment purchases in accounts payable and accrued expenses
Equity issuance costs in accounts payable and accrued expenses

Reconciliation to amounts within the consolidated balance sheets

Cash and cash equivalents
Restricted Cash

Total

2021

Years Ended December 31,
2020

2019

$

377,661

$

(348,865) $

66,858

17,953
102,390
—
—
14,109

(161)
(13,912)
37,514
(783)
9,506
(5,305)
538,972

(81,705)

—
(1,509,327)
555,602
(1,035,430)

213,267
37,678
250,945
(11)
(245,524)
1,185,468
939,944

8,348
334

$

$
$

9,184
66,018
—
—
1,857

(45)
17,338
25,747
1,381
(473)
(10,508)
(238,366)

(18,358)

—
(593,998)
71,186
(541,170)

982,289
33,863
1,016,152
40
236,656
948,812
1,185,468

3,412
9,590

2021

923,031
16,913
939,944

As of December 31,
2020
1,168,620
16,848
1,185,468

$

$

$
$

$

4,725
44,057
5,467
(16,000)
—

(11)
(32,618)
5,025
(45,146)
(663)
24,983
56,677

(6,684)

8,009
—
—
1,325

415,019
15,964
430,983
15
489,000
459,812
948,812

1,811
295

2019

943,771
5,041
948,812

$

$
$

$

See accompanying notes to these consolidated financial statements.

F-7

CRISPR Therapeutics AG
Notes to Consolidated Financial Statements 

1. Organization and Operations 

CRISPR Therapeutics AG (“CRISPR” or the “Company”) was incorporated on October 31, 2013 in Basel, Switzerland. The 

Company was established to translate CRISPR/Cas9, a genome editing technology, into transformative gene-based medicines for the
treatment of serious human diseases. The foundational intellectual property underlying the Company’s operations was licensed to the
Company in April 2014. The Company devotes substantially all of its efforts to product research and development activities, initial 
market development and raising capital. The Company’s principal offices are in Zug, Switzerland and operations are in Cambridge,
Massachusetts.

The Company is subject to risks common to companies in the biotechnology industry, including but not limited to, risks of 
failure of preclinical studies and clinical trials, the need to obtain marketing approval for any drug product candidate that it may 
identify and develop, the need to successfully commercialize and gain market acceptance of its product candidates, dependence on key
personnel, protection of proprietary technology, compliance with government regulations, development by competitors of 
technological innovations and ability to transition from pilot-scale manufacturing to large-scale production of products. 

The Company had an accumulated deficit of $195.9 million as of December 31, 2021 and has financed its operations to date 

from a series of preferred shares and convertible loan issuances, proceeds obtained from its initial public offering, subsequent public 
offerings of its common shares, as well as upfront fees and milestones received under its collaboration and joint venture arrangements.
The Company will require substantial additional capital to fund its research and development and ongoing operating expenses. 

As of December 31, 2021, the Company had cash, cash equivalents and marketable securities of $2,379.1 million. While the

Company was in a net income position in the current and certain previous years due to upfronts associated with the Company's
collaborations with Vertex Pharmaceuticals Incorporated and certain of its subsidiaries, or Vertex, the Company has a history of 
recurring losses and expects to continue to incur losses for the foreseeable future. The Company expects its cash and cash equivalents
will be sufficient to fund current planned operations for at least the next twenty-four months.

The full extent of the impact of the coronavirus pandemic on the Company’s business, operations and financial results will 

depend on numerous evolving factors that we may not be able to accurately predict. See Item 1A: "Risk Factors" section set forth in
this Annual Report on Form 10-K for additional details. At this stage, the impact on the Company’s results has not been significant. 

2. Summary of Significant Accounting Policies and Basis of Presentation

Basis of Presentation and Use of Estimates

The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally 
accepted in the United States of America, or GAAP, and include the accounts of the Company and its wholly-owned subsidiaries as of 
December 31, 2021. All intercompany accounts and transactions have been eliminated. Any reference in these notes to applicable 
guidance is meant to refer to the authoritative United States generally accepted accounting principles as found in the Accounting 
Standards Codification, or ASC, and Accounting Standards Updates, or ASUs, of the Financial Accounting Standards Board. 

Prior to December 13, 2019, the Company accounted for its 50% investment in Casebia Therapeutics, Limited Liability 
Partnership, or Casebia, under the equity method. As described in Note 9, on December 13, 2019, Casebia became a wholly-owned 
subsidiary and, as a result, the Company consolidated Casebia’s financial results from that date forward. 

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that 

affect the amounts reported in the financial statements and accompanying notes. On an ongoing basis, the Company’s management 
evaluates its estimates, which include, but are not limited to, revenue recognition, equity-based compensation expense and reported 
amounts of research and development expenses during the period. Significant estimates in these consolidated financial statements
have been made in connection with revenue recognition and equity-based compensation expense. The Company bases its estimates on 
historical experience and other market-specific or other relevant assumptions that it believes to be reasonable under the circumstances.
Actual results may differ from those estimates or assumptions.

F-8

Segment Information

The Company and the Company’s chief operating decision maker, namely, the chief executive officer, view the Company’s 

operations and manage its business in one operating segment, which is the business of discovering, developing and commercializing 
therapies derived from or incorporating genome-editing technology.

Foreign Currency Translation and Transactions 

The majority of the Company’s operations occur in entities that have the U.S. dollar as their functional currency. Non-U.S. 
dollar denominated functional currency subsidiaries have assets and liabilities translated into U.S. dollars at rates of exchange in effect 
at the end of the year. Revenue and expense amounts are translated using the average exchange rates for the period. Net unrealized 
gains and losses resulting from foreign currency translation are included in “Accumulated other comprehensive income (loss).” Net 
foreign currency exchange transaction gains or losses are included in “Other income (expense), net” on the Company’s consolidated 
statement of operations, the impact of which is not significant.

Cash and Cash Equivalents

The Company considers all highly liquid investments with maturities of three months or less from the purchase date to be cash
equivalents. As of December 31, 2021 and 2020, the Company had $923.0 million and $1,168.6 million in cash and cash equivalents,
respectively. 

Restricted Cash

As of December 31, 2021, the Company had $16.9 million in restricted cash representing letters of credit securing the 

Company’s obligations under certain leased facilities, as well as certain credit card arrangements, which was unchanged from 
December 31, 2020. The letters of credit are secured by cash held in a restricted depository account and recorded in restricted cash in
the accompanying consolidated balance sheet as of December 31, 2021.

Marketable Securities

As of December 31, 2021 and 2020, the Company had $1,456.1 million and $521.7 million, respectively in marketable 
securities. The Company’s investment strategy is focused on capital preservation. The Company invests in instruments that meet the 
credit quality standards outlined in the Company’s investment policy. The Company classifies marketable securities with a remaining
maturity, when purchased, of greater than three months as available-for-sale. Marketable securities are classified as current assets on
the consolidated balance sheets if the marketable securities are available to be converted into cash to fund current operations. As a
result, the Company classified all of these securities as current assets even though the stated maturity of some individual securities 
may be one year or more beyond the balance sheet date. 

Marketable securities classified as Level 2 within the valuation hierarchy generally consist of U.S. treasury securities and 

government agency securities, corporate bonds, and commercial paper. Debt securities are carried at fair value with the unrealized 
gains and losses included in other comprehensive income (loss) as a component of stockholders’ equity until realized. Any premium 
arising at purchase is amortized to interest expense over the period of the earliest call date, and any discount arising at purchase is
accreted to interest income over the life of the instrument. Realized gains and losses on debt securities are determined using the
specific identification method and are included in other income (expense), net.

Effective January 1, 2020, the Company adopted ASU 2016-13, Financial Instruments – Credit Losses (Topic 326):

Measurement of Credit Losses on Financial Statements, or ASC 326. As the Company did not hold available-for-sale debt securities
upon adoption, no related transition provisions were applicable to the Company upon adoption.

The Company assesses its available-for-sale debt securities under the available-for-sale debt security impairment model in ASC

326 as of each reporting date in order to determine if a portion of any decline in fair value below carrying value recognized on its 
available-for-sale debt securities is the result of a credit loss. The Company records credit losses in the consolidated statements of 
operations and comprehensive loss as credit loss expense within other expense, net, which is limited to the difference between the fair 
value and the amortized cost of the security. To date, the Company has not recorded any credit losses on its available-for-sale debt 
securities. 

F-9

Other Receivables

 Amounts due from collaboration partners where an arrangement is accounted for under ASC 808, Collaborative
Arrangements, or ASC 808, are considered other receivables and are included within prepaid and other current assets in the 
consolidated balance sheet. Other receivables consisted of $8.4 million and $10.7 million as of December 31, 2021 and 2020,
respectively and are due from Vertex. Other receivables are recorded at invoiced amounts due under the Vertex collaboration
agreement, as described further in Note 9. Vertex is a creditworthy entity that maintains an ongoing relationship with the Company 
and as such, the Company does not have an allowance for estimated credit losses recorded related to these other receivables. 

Concentrations of Credit Risk and Off-balance Sheet Risk 

Financial instruments that potentially subject the Company to concentrations of credit risk are primarily cash, cash equivalents

and marketable securities. The Company’s cash is held in accounts with financial institutions that management believes are
creditworthy. The Company has not experienced any credit losses in such accounts and does not believe it is exposed to any
significant credit risk on these funds. The Company has no financial instruments with off-balance sheet risk of loss. 

Fair Value of Financial Instruments

The Company has certain financial assets and liabilities 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 in active markets that are accessible at the market date for identical unrestricted assets or liabilities.

Level 2 — Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or 
liabilities; quoted prices in markets that are not active; or other inputs for which all significant inputs are observable or can be
corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the
assets or liabilities.

To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the

determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining 
fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on 
the lowest level of any input that is significant to the fair value measurement.

Items measured at fair value on a recurring basis include marketable securities (see Note 3, Marketable Securities, and Note 4, 
Fair Value Measurement). The carrying amount of accounts receivable, other receivables, accounts payable and accrued expenses as 
reported on the consolidated balance sheets as of December 31, 2021 and 2020, approximate fair value, due to the short-term duration 
of these instruments.

Property and Equipment 

Property and equipment are recorded at cost, less accumulated depreciation. Maintenance and repairs that do not improve or 

extend the lives of the respective assets are expensed to operations as incurred. Upon disposal, the related cost and accumulated 
depreciation is removed from the accounts and any resulting gain or loss is included in the results of operations. Depreciation is
recorded using the straight-line method over the estimated useful lives of the respective assets, which are as follows:

Asset
Computer equipment
Furniture, fixtures and other
Laboratory equipment
Leasehold improvements

Impairment of Long-lived Assets

Estimated useful life
3 years
5 years
5 years
Shorter of useful life or remaining lease term

The Company reviews long-lived assets when events or changes in circumstances indicate the carrying value of the assets may
not be recoverable. Recoverability is measured by comparison of the book values of the assets to future net undiscounted cash flows
that the assets are expected to generate. If such assets are considered to be impaired, the impairment to be recognized is measured by
the amount by which the book value of the assets exceed their fair value, which is measured based on the projected discounted future 
net cash flows arising from the assets.

F-10

Revenue Recognition

The Company records revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers, or ASC 606. ASC

606 applies to all contracts with customers, except for contracts that are within the scope of other standards, such as leases and 
collaboration arrangements. To determine revenue recognition for arrangements that an entity determines are within the scope of ASC
606, the entity performs the following five steps: 

1) Identify the contract with the customer

A contract with a customer exists when (i) the Company enters into an enforceable contract with a customer that defines each 

party’s rights regarding the goods or services to be transferred and identifies the related payment terms, (ii) the contract has 
commercial substance and (iii) the Company determines that collection of substantially all consideration for goods and services that 
are transferred is probable based on the customer’s intent and ability to pay the promised consideration.

2) Identify the performance obligations in the contract

Performance obligations promised in a contract are identified based on the goods and services that will be transferred to the 

customer that are both capable of being distinct, whereby the customer can benefit from the good or service either on its own or 
together with other available resources, and are distinct in the context of the contract, whereby the transfer of the good or service is 
separately identifiable from other promises in the contract. To the extent a contract includes multiple promised goods and services, the
Company must apply judgment to determine whether promised goods and services are capable of being distinct and distinct in the
context of the contract. If these criteria are not met, the promised goods and services are accounted for as a combined performance
obligation.

3) Determine the transaction price

The transaction price is determined based on the consideration to which the Company will be entitled in exchange for 
transferring goods and services to the customer. To the extent the transaction price includes variable consideration such as research, 
development, regulatory and commercial milestones, the Company determines if it is probable that it will receive such amounts and 
there is no risk of a significant revenue reversal. When the Company cannot conclude that receipt of such amounts is probable, the 
Company constrains the related variable consideration resulting in its exclusion from transaction consideration. In determining the 
portion of the transaction consideration to be constrained, the Company considers the probability and uncertainty that the related 
research, developmental, regulatory and commercial milestones will be achieved given the nature of research and clinical development 
and the stage of the underlying programs. This assessment is performed at each reporting period. In making this evaluation, the 
Company considers both internal and external information available, including information from industry publications and other 
relevant factors. Changes to the constraint of variable consideration can have a material effect on the amount of revenue recognized in
the period. 

4) Allocate the transaction consideration to performance obligations in the contract

If the contract contains a single performance obligation, the entire transaction consideration is allocated to the single 

performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction consideration
to each performance obligation on a relative standalone selling price basis unless the transaction consideration is variable and meets
the criteria to be allocated entirely to a performance obligation or to a distinct service that forms part of a single performance 
obligation. The consideration to be received is allocated among the separate performance obligations based on relative standalone 
selling prices. In determining these estimated standalone selling prices, the Company makes a number of significant judgements
including, for licenses, management’s assumptions regarding probability weighted projected discounted cash flows for each of the 
collaboration development programs. The estimated standalone selling prices are sensitive to changes in assumptions, such as 
probabilities of scientific success, discount rate and certain assumptions that form the basis of forecasted cash flows. In developing
these assumptions, management considers both internal and external information available, including information from other guideline
companies within the same industry and other relevant factors. Changes to these assumptions can have a material effect on the
allocation of the transaction consideration to performance obligations, as well as the amount and timing of revenue recognized. 

5) Recognize revenue when or as the Company satisfies a performance obligation

The Company satisfies performance obligations over time or at a point in time, depending on the nature of the performance

obligation. Revenue is recognized over time if the customer simultaneously receives and consumes the benefits provided by the
entity’s performance, the entity’s performance creates or enhances an asset that the customer controls as the asset is created or 
enhanced, or the entity’s performance does not create an asset with an alternative use to the entity and the entity has an enforceable 
right to payment for performance completed to date. If the entity does not satisfy a performance obligation over time, the related 
performance obligation is satisfied at a point in time by transferring the control of a promised good or service to a customer. 

F-11

Contract Balances

The Company recognizes a contract asset when the Company transfers goods or services to a customer before the customer pays

consideration or before payment is due, excluding any amounts presented as an account or other receivable. A contract asset is an 
entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer. The contract liabilities, or 
deferred revenue, primarily relate to contracts where we have received payment, but we have not yet satisfied the related performance 
obligations. Contract assets are not significant as of December 31, 2021 and 2020. Contract liabilities recorded as deferred revenue as
of December 31, 2021 and 2020 are $12.3 million and $12.2 million, respectively. The change in contract assets and contract 
liabilities recorded as deferred revenue is related to the collaboration agreement with Vertex described in Note 9. 

Collaboration Arrangements

The Company records the elements of its collaboration agreements that represent joint operating activities in accordance with 

ASC 808, Collaborative arrangements, or ASC 808. Accordingly, the elements of the collaboration agreements that represent 
activities in which both parties are active participants and to which both parties are exposed to the significant risks and rewards that 
are dependent on the commercial success of the activities, are recorded as collaborative arrangements. 

The Company evaluates the proper presentation of the commercial activities and the profit and loss sharing associated with the

t

collaboration agreements. ASC 808 states that when payments between parties in a collaborative arrangement are not within the scope 
of other authoritative accounting literature, the income statement classification should be based on the nature of the arrangement, the
nature of its business operations and the contractual terms of the arrangement. To the extent that these payments are not within the
scope of other authoritative accounting literature, the income statement classification for the payments shall be based on an analogy to
authoritative accounting literature or if there is no appropriate analogy, a reasonable, rational and consistently applied accounting 
policy election.

Research and Development Expenses 

Research and development costs are charged to expense as costs are incurred in performing research and development activities, 

including salaries and benefits, facilities costs, overhead costs, clinical study and related clinical manufacturing costs, license and 
milestone fees, contract services and other related costs. Research and development costs, including up-front fees and milestones paid 
to collaborators, are also expensed as incurred. In circumstances where amounts have been paid in excess of costs incurred, the 
Company records a prepaid expense. The Company accrues costs for clinical trial activities based upon estimates of the services
received and related expenses incurred that have yet to be invoiced by the contract research organizations, clinical study sites,
laboratories, consultants or other clinical trial vendors that perform the activities. The Company recognizes the reimbursement 
associated with collaborative activities to its collaborative partners as a reduction to research and development expense in the period 
the services are provided.

Leases

The Company accounts for its leases in accordance with ASC 842, Leases, or ASC 842. At the inception of an arrangement, the 

Company determines whether the arrangement is or contains a lease based on the unique facts and circumstances present in the
arrangement. Leases with a term greater than one year are recognized on the balance sheet as right-of-use assets and short-term and 
long-term lease liabilities, as applicable. The Company does not have financing leases.

Operating lease liabilities and their corresponding right-of-use assets are initially recorded based on the present value of lease

payments over the expected remaining lease term. Certain adjustments to the right-of-use asset may be required for items such as
incentives received. The interest rate implicit in lease contracts is typically not readily determinable. As a result, the Company utilizes
its incremental borrowing rate to discount lease payments, 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. 
Prospectively, the Company will adjust the right-of-use assets for straight-line rent expense or any incentives received and remeasure
the lease liability at the net present value using the same incremental borrowing rate that was in effect as of the lease commencement 
or transition date.

The Company has elected not to recognize leases with an original term of one year or less on the balance sheet. 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 of renewal.

F-12

Assumptions made by the Company at the commencement date are re-evaluated upon occurrence of certain events, including a 

lease modification. A lease modification results in a separate contract when the modification grants the lessee an additional right of 
use not included in the original lease and when lease payments increase commensurate with the standalone price for the additional 
right of use. When a lease modification results in a separate contract, it is accounted for in the same manner as a new lease.

Equity Based Compensation Expense 

The Company’s share-based compensation programs grant awards that have included stock options, restricted stock units and 

restricted stock awards. Grants are awarded to employees and non-employees, including directors. 

The Company accounts for its stock-based compensation awards in accordance with ASC Topic 718, Compensation—Stock 

Compensation, or ASC 718. ASC 718 requires all stock-based payments to employees and non-employee directors, including grants
of employee stock options and restricted stock units and modifications to existing stock options, to be recognized in the consolidated 
statements of operations and comprehensive income (loss) based on their fair values. The Company uses the Black-Scholes option
pricing model to determine the fair value of options granted.

The Company accounts for forfeitures as they occur instead of estimating forfeitures at the time of grant and revising those 
estimates in subsequent periods if actual forfeitures differ from its estimates. Stock-based compensation expense recognized in the
financial statements is based on awards for which performance or service conditions are expected to be satisfied.

The Company’s stock-based awards are subject to service or performance-based vesting conditions. Compensation expense
related to awards to employees, directors and non-employees with service-based vesting conditions is recognized on a straight-line
basis based on the grant date fair value over the associated service period of the award, which is generally the vesting term. 
Compensation expense related to awards to employees with performance-based vesting conditions is recognized based on the grant 
date fair value over the requisite service period using the accelerated attribution method to the extent achievement of the performance
condition is probable.

The Company expenses restricted stock unit awards to employees based on the fair value of the award on a straight-line basis

over the associated service period of the award.

The Company estimates the fair value of its option awards to employees, directors and non-employees using the Black-Scholes

option pricing model, which requires the input of subjective assumptions, including (i) the expected stock price volatility, (ii) the 
calculation of expected term of the award, (iii) the risk-free interest rate and (iv) expected dividends. Due to the lack of complete 
company-specific historical and implied volatility data for the full expected term of the stock-based awards, the Company bases its
estimate of expected volatility on a representative group of publicly traded companies in addition to its own volatility data. For these 
analyses, the Company selected companies with comparable characteristics to its own, including enterprise value, risk profiles, 
position within the industry, and with historical share price information sufficient to meet the expected life of the stock-based awards. 
The Company computes historical volatility data using the daily closing prices for the selected companies’ shares during the
equivalent period of the calculated expected term of the stock-based awards. The Company will continue to apply this process until a 
sufficient amount of historical information regarding the volatility of its own stock price becomes available. The Company has 
estimated the expected term of its employee stock options using the “simplified” method, whereby the expected term equals the
arithmetic average of the vesting term and the original contractual term of the option, due to its lack of sufficient historical data. The 
risk-free interest rates for periods within the expected term of the option are based on the U.S. Treasury securities with a maturity date 
commensurate with the expected term of the associated award. The Company has never paid, and does not expect to pay, dividends in 
the foreseeable future.

Patent Costs 

Costs to secure and prosecute patent applications and other legal costs related to the protection of the Company’s intellectual
property are expensed as incurred and are classified as general and administrative expenses in the Company’s consolidated statements 
of operations.

F-13

Income Taxes 

Income taxes are recorded in accordance with ASC Topic 740, Income Taxes, or ASC 740, which provides for deferred taxes 

using an asset and liability approach. Under this method, deferred tax assets and liabilities are determined based on the difference 
between the financial reporting and tax reporting basis of assets and liabilities and are measured using enacted tax rates and laws that 
are expected to be in effect when the differences are expected to reverse. Valuation allowances are provided if, based upon the weight 
of available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. The Company has 
evaluated available evidence and concluded that the Company may not realize all the benefit of its deferred tax assets; therefore, a 
valuation allowance has been established for the amount of the deferred tax assets that the Company does not believe is more likely
than not to be realized.

The Company accounts for uncertain tax positions in accordance with the provisions of ASC 740. When uncertain tax positions
exist, the Company recognizes the tax benefit of tax positions to the extent that the benefit will more likely than not be realized. The 
determination as to whether the tax benefit will more likely than not be realized is based upon the technical merits of the tax position
as well as consideration of the available facts and circumstances. As of December 31, 2021 and 2020, the Company does not have any 
significant uncertain tax positions. The Company’s practice is to recognize interest and/or penalties related to income tax matters in
income tax expense. See Note 14 for further details. 

Comprehensive Income (Loss) 

Comprehensive income (loss) consists of net income or loss and other comprehensive income (loss).  Other comprehensive

income (loss) consists of foreign currency translation adjustments and unrealized losses on marketable securities. 

Variable Interest Entities 

The Company reviews each legal entity formed by parties related to the Company to determine whether or not the Company has 

a variable interest in the entity and whether or not the entity would meet the definition of a variable interest entity, or VIE, in
accordance with ASC Topic 810, Consolidation, or ASC 810. If the entity is a VIE, the Company assesses whether or not the
Company is the primary beneficiary of that VIE based on a number of factors, including (i) which party has the power to direct the 
activities that most significantly affect the VIE’s economic performance, (ii) the parties’ contractual rights and responsibilities
pursuant to any contractual agreements and (iii) which party has the obligation to absorb losses or the right to receive benefits from the
VIE. If the Company determines it is the primary beneficiary of a VIE, the Company consolidates the financial statements of the VIE
into the Company’s consolidated financial statements at the time that determination is made. The Company evaluates whether it 
continues to be the primary beneficiary of any consolidated VIEs on a quarterly basis. If the Company were to determine that it is no
longer the primary beneficiary of a consolidated VIE, or no longer has a variable interest in the VIE, it would deconsolidate the VIE in 
the period that the determination is made. 

If the Company determines it is the primary beneficiary of a VIE that meets the definition of a business, the Company measures 

the assets, liabilities and noncontrolling interests of the newly consolidated entity at fair value in accordance with ASC Topic 805, 
Business Combinations, or ASC 805, at the date the reporting entity first becomes the primary beneficiary.

In February 2016, Casebia, was formed in the United Kingdom. In March 2016, upon consummation of the joint venture (“JV”), 

Bayer Healthcare LLC and certain of its affiliates (“Bayer”) and the Company each received a 50% equity interest in the entity in
exchange for their contributions to the entity. The Company determined that Casebia was considered a VIE and concluded that it is not 
the primary beneficiary of the VIE. As such, the Company has not historically consolidated Casebia’s results into the consolidated 
financial statements.

As described in Note 9, on December 13, 2019, Casebia became a fully-owned subsidiary and, as a result, the Company

consolidated Casebia’s financial results accordingly from that point forward. 

Net Income (Loss) Per Share Attributable to Common Shareholders 

Basic net income (loss) per share is calculated by dividing net income (loss) attributable to common shareholders by the

weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share is calculated by 
dividing the net income (loss) attributable to common shareholders by the weighted-average number of common equivalent shares 
outstanding for the period, including any dilutive effect from outstanding stock options and restricted stock units using the treasury
stock method. See Note 12 for further details. 

F-14

New Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies that the Company

adopts as of the specified effective date. Unless otherwise discussed below, the Company does not believe that the adoption of 
recently issued standards have or may have a material impact on its consolidated financial statements and disclosures.

ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, or 
ASU 2019-12, which is intended to simplify the accounting for income taxes. ASU 2019-12 removes certain exceptions to the general 
principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. The Company adopted 
ASU 2019-12 on January 1, 2021. The adoption of ASU 2019-12 did not have a material impact on the Company’s financial position 
or results of operations upon adoption.

3. Marketable Securities

A summary of the Company’s cash equivalents and marketable securities as of December 31, 2021 and 2020, which are
recorded at fair value (and excludes $405.6 million and $395.1 million of cash at December 31, 2021 and 2020, respectively) is shown
below (in thousands):

December 31, 2021
Cash equivalents:

Money market funds
Corporate debt securities
Certificates of deposit
Commercial paper

Total cash equivalents

Marketable securities:

U.S. Treasury securities
Corporate debt securities
Certificates of deposit
Government-sponsored enterprise securities
Commercial paper

Total marketable securities
Total cash equivalents and marketable securities

December 31, 2020

Cash equivalents:

Money market funds
Corporate debt securities
Certificates of deposit
Commercial paper

Total cash equivalents

Marketable securities:

U.S. Treasury securities
Corporate debt securities
Certificates of deposit
Government-sponsored enterprise securities
Commercial paper

Total marketable securities
Total cash equivalents and marketable securities

Amortized
Cost

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Fair Value

$

$

$

$

507,386
—
—
9,997
517,383

16,238
1,173,659
45,164
13,334
212,805
1,461,200
1,978,583

Amortized
Cost

742,958
2,526
12,527
15,549
773,560

47,976
324,569
25,162
33,738
90,375
521,820
1,295,380

$

$

$

$

— $
—
—
—
—

6
10
—
—
—
16
16

$

— $
—
—
(1)
(1)

(52)
(4,903)
—
(77)
(86)
(5,118)
(5,119)

$

507,386
—
—
9,996
517,382

16,192
1,168,766
45,164
13,257
212,719
1,456,098
1,973,480

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Fair Value

— $
1
—
—
1

3
43
—
5
—
51
52

$

— $
(24)
—
—
(24)

—
(156)
—
(2)
—
(158)
(182) $

742,958
2,503
12,527
15,549
773,537

47,979
324,456
25,162
33,741
90,375
521,713
1,295,250

As of December 31, 2021 and 2020, the aggregate fair value of marketable securities that were in an unrealized loss position for 
less than twelve months was $1,311.6 million and $280.3 million, respectively. As of December 31, 2021, the aggregate fair value of 
marketable securities that were in an unrealized loss position for more than twelve months was $4.6 million. As of December 31, 

F-15

2020, no marketable securities were in an unrealized loss position for more than twelve months. The Company has recorded a net 
unrealized loss of $5.0 million and $0.1 million, respectively, during the years ended December 31, 2021 and 2020 related to its 
marketable securities, which is included in comprehensive income (loss) on the consolidated statements of operations and 
comprehensive income (loss). No net unrealized loss was recorded related to its marketable securities for the year ended December 31, 
2019. 

The Company determined that there was no material credit risk of the above investments as of December 31, 2021. The 
Company has the intent and ability to hold such securities until recovery. As a result, the Company did not record any charges for 
credit-related impairments for its marketable securities for the years ended December 31, 2021 and 2020.

4. Fair Value Measurement

The following tables present information about the Company’s financial assets measured at fair value on a recurring basis and 

indicate the fair value hierarchy classification of such fair values as of December 31, 2021 and 2020 (in thousands): 

Cash and cash equivalents:

Cash
Money market funds
Corporate debt securities
Certificates of deposit
Commercial paper
Marketable securities:

U.S. Treasury securities
Corporate debt securities
Certificates of deposit
Government-sponsored enterprise securities
Commercial paper

Other non-current assets

Total

Cash and cash equivalents:

Cash
Money market funds
Corporate debt securities
Certificates of deposit
Commercial paper
Marketable securities:

U.S. Treasury securities
Corporate debt securities
Certificates of deposit
Government-sponsored enterprise securities
Commercial paper

Other non-current assets

Total

Total

405,648
507,386
—
—
9,997

16,192
1,168,766
45,164
13,257
212,719
2,212
2,381,341

Total

395,083
742,958
2,503
12,527
15,549

47,979
324,456
25,162
33,741
90,375
600
1,690,933

$

$

$

$

$

$

$

$

Fair Value Measurements at
December 31, 2021

Level 1

Level 2

Level 3

405,648
507,386
—
—
—

—
—
—
—
—
—
913,034

$

$

— $
—
—
—
9,997

16,192
1,168,766
45,164
13,257
212,719
—
1,466,095

$

Fair Value Measurements at
December 31, 2020

Level 1

Level 2

Level 3

395,083
742,958
—
—
—

—
—
—
—
—
—
1,138,041

$

$

— $
—
2,503
12,527
15,549

47,979
324,456
25,162
33,741
90,375
—
552,292

$

—
—
—
—
—

—
—
—
—
—
2,212
2,212

—
—
—
—
—

—
—
—
—
—
600
600

Marketable securities classified as Level 2 within the valuation hierarchy generally consist of U.S. treasury securities and 

government agency securities, corporate bonds, and commercial paper. The Company estimates the fair values of these marketable 
securities by taking into consideration valuations obtained from third-party pricing sources. 

The Company holds equity securities classified as Level 3 which are not material to the Company’s financial position.

F-16

5. Property and Equipment, net 

Property and equipment, net, consists of the following (in thousands): 

Computer equipment
Furniture, fixtures, and other
Laboratory equipment
Leasehold improvements
Construction work in process

Total property and equipment, gross

Accumulated Depreciation

Total property and equipment, net

As of December 31,

2021

2020

$

$

1,757
4,371
30,123
86,735
52,396
175,382
(37,807)
137,575

$

$

727
3,416
25,353
25,473
8,366
63,335
(21,175)
42,160

Depreciation expense for the year ended December 31, 2021, 2020 and 2019 was $17.9 million, $9.1 million, and $4.7 million, 

respectively. 

6. Accrued Expenses

Accrued expenses consist of the following (in thousands):

Payroll and employee-related costs
Research costs
Licensing fees
Professional fees
Intellectual property costs
Accrued property and equipment
Other

Total

7. Leases

As of December 31,

2021

2020

23,661
47,986
138
4,720
6,120
7,113
1,265
91,003

$

$

22,402
21,684
1,401
1,670
3,625
2,835
165
53,782

$

$

In June 2015, the Company entered into a lease agreement for the lease of research facility space in Cambridge, Massachusetts,

with a commencement date of November 15, 2015, or the 2015 Lease. The lease was subsequently amended in both 2017 and 2020 
and now expires in 2022 with no further option to extend. The 2015 Lease contains escalating rent clauses, which require higher rent 
payments in future years. 

In May 2016, the Company entered into a sublease agreement for its primary office and research facility in Cambridge, 
Massachusetts, with a commencement date of December 23, 2016, or the 2016 Sublease. The sublease was subsequently amended in 
2021 and now expires in 2022. The right-of-use assets and right-of-use liabilities were adjusted in the second quarter of 2021, 
accordingly. The 2016 Sublease contains escalating rent clauses, which require higher rent payments in future years.

In May 2019, the Company entered into a lease agreement for office facility space in Cambridge, Massachusetts, with a
commencement date of June 1, 2019, or the 2019 Lease. The lease expires in November 2026, and the Company has an option to 
extend the term of the lease for an additional five-year period based on certain conditions within the Company’s control. The 2019
Lease contains escalating rent clauses which require higher rent payments in future years. The right-of-use asset and corresponding 
lease liability does not include the additional five-year period under the renewal option as the Company is not reasonably certain to
exercise that option.

In December 2019, Casebia became a wholly-owned subsidiary of the Company. In connection therewith, Casebia assigned its

sublease for an office and research facility in Cambridge, Massachusetts, or the 2019 Sublease, to the Company. The sublease was
subsequently amended in 2021 and now expires in 2022 with no further option to extend. The right-of-use assets and right-of-use 
liabilities were adjusted in the second quarter of 2021, accordingly. The 2019 Sublease contains escalating rent clauses which require 
higher rent payments in future years. 

F-17

In May 2020, the Company entered into a lease agreement for a cell therapy manufacturing facility in Framingham, 
Massachusetts, or the Framingham Lease, for clinical and commercial production of the Company’s investigational cell therapy 
product candidates. The Framingham Lease expires in March 2036 and the Company has an option to extend the term of the lease for 
two additional seven-year periods. The right-of-use asset and corresponding lease liability does not include the additional seven-year 
periods under the renewal option as the Company is not reasonably certain to exercise that option.

In July 2020, the Company entered into a lease agreement for an office and laboratory facility in Boston, Massachusetts, or the 
2020 Lease. The 2020 Lease commenced in the second quarter of 2021, and at lease commencement, the Company recorded a right-
of-use asset of $149.8 million and a corresponding operating lease liability of $147.9 million. Tenant incentives of $49.2 million were 
recorded as a reduction to the operating lease asset and liability at lease commencement. The right-of-use asset and corresponding 
lease liability does not include the additional five-year periods under the renewal option as the Company is not reasonably certain to 
exercise that option. The lease expires in March 2034 and the Company has an option to extend the term of the lease for two 
additional five-year periods.

In addition, the Company rents certain office space in Zug, Switzerland, on a short-term basis for which a right-of-use asset and 

liability are not recorded, in accordance with the practical expedient elected.

The Company has embedded leases in certain research and license agreements for which the Company has recorded a right of 

use asset and liability. These arrangements are not significant in comparison to the Company’s total operating lease assets and 
liabilities. In addition, the Company has identified certain short-term leases embedded within its manufacturing contracts which are 
not recorded on the Company’s balance sheet in accordance with the practical expedient elected. 

The Company identified and assessed the following estimates in recognizing the right-of-use asset and corresponding liability:

•

•

Expected lease term: The expected lease term for those leases commencing prior to January 1, 2019 did not change with 
the adoption of ASC 842. The expected lease term for leases commencing after the adoption of ASC 842 includes 
noncancelable lease periods and, when applicable, periods covered by an option to extend the lease if the Company is
reasonably certain to exercise that option, as well as periods covered by an option to terminate the lease if the Company is
reasonably certain not to exercise that option.  

Incremental borrowing rate: As the discount rates in the Company’s leases are not implicit, the Company estimated the
incremental borrowing rate based on the rate of interest the Company would have to pay to borrow a similar amount on a 
collateralized basis over a similar term.  

The following table summarizes the lease assets and liabilities as of December 31, 2021 and 2020 (in thousands):

Assets
Operating lease assets
Total lease assets
Liabilities
Current

Operating lease liabilities

Non-current

Operating lease liabilities, net of current portion

Total lease liabilities

As of December 31,

2021

2020

$

$

174,460
174,460

$

12,158

212,872
225,030

$

50,865
50,865

11,362

50,067
61,429

The following table summarizes operating lease costs included in research and development and general and administrative 

expense, as well as sublease income for the twelve months ended December 31, 2021, 2020 and 2019 (in thousands):

F-18

Operating lease costs
Short-term lease costs
Variable lease costs
Sublease income
Net lease cost

2021

Years Ended December 31,
2020

2019

22,520 $
11,087
8,402
(5,253)
36,756 $

14,342 $
7,339
6,368
(587)
27,462 $

8,067
4,554
4,282
(525)
16,378

$

$

The following table summarizes the maturity of undiscounted payments due under lease liabilities and the present value of those 

liabilities as of December 31, 2021 (in thousands):

2022
2023
2024
2025
2026
Thereafter
Total
Present value adjustment
Present value of lease liabilities

Total

18,256
26,633
26,137
26,347
26,844
227,528
351,745
(126,715)
225,030

$

$

The following table summarizes the lease term (in years) and discount rate for operating leases as of December 31, 2021 and 

2020:

Weighted-average remaining lease term
Weighted-average discount rate

As of December 31,

2021

2020

12.4
5.9%

9.1
9.3%

The following table summarizes the cash paid for amounts included in the measurement of lease liabilities for the year ended 

December 31, 2021 and 2020 (in thousands):

2021

Years Ended December 31,
2020

2019

Cash paid for amounts included in measurement of lease
liabilities:
Operating cash flows used in operating leases
Operating lease non-cash items:
Right-of-use assets (decreased) increased through lease 
modifications and reassessments
Right-of-use assets obtained in exchange for operating 
lease liabilities
Leasehold improvements paid directly by landlord

$

(19,753) $

(13,161) $

(8,420)

(14,230)

152,486

30,500

3,169

13,956

—

826

18,088

—

8. Commitments and Contingencies 

Intellectual Property Agreements

Charpentier License Agreements

In April 2014, the Company entered into certain technology license agreements with Dr. Emmanuelle Charpentier pursuant to 

which the Company licensed certain intellectual property rights under joint ownership from Dr. Charpentier to develop and 
commercialize products for the treatment or prevention of human diseases. In connection therewith, Dr. Charpentier is entitled to
receive nominal clinical milestone payments, low single digit percentage of sublicensing payments received under any sublicense 
agreement with a third party, and low single-digit percentage royalties based on annual net sales of licensed products and services by
the Company and its affiliates and sublicensees.

F-19

    
Patent Assignment Agreement 

In November 2014, the Company entered into a patent assignment agreement with Dr. Charpentier, Dr. Ines Fonfara, and 

Vienna (collectively, the “Assignors”), pursuant to which the Company was assigned all rights, title and interest in and to certain 
patent rights claimed in the U.S. Patent Application No.61/905,835. As a result, the Assignors are entitled to receive certain low single
digit clinical milestone payments and low single digit royalties based on annual net sales of licensed products and licensed services by
the Company, its affiliates and sublicensees.

During the years ended December 31, 2021, 2020 and 2019, the Company paid an immaterial amount of fees to Dr. Charpentier 

under the Charpentier License Agreements and the Assignors under the Patent Assignment Agreement, which were recorded as 
research and development expense.  

Research, Manufacturing and License Agreements

The Company has engaged several research institutions and companies to identify new delivery strategies and applications of 
the Company’s gene-editing technology. The Company is also a party to a number of license agreements which require significant 
upfront payments and may be required to make future royalty payments and potential milestone payments from time to time. In 
addition, the Company is also a party to intellectual property agreements, which require maintenance and milestone payments from 
time to time. Further, the Company is a party to a number of manufacturing agreements that require upfront payments for the future 
performance of services. 

In association with these agreements, on a product-by-product basis, the counterparties are eligible to receive up to low eight-
digit potential payments upon specified research, development and regulatory milestones. In addition, on a product-by-product basis,
the counterparties are eligible to receive potential commercial milestone payments based on specified annual sales thresholds. The 
potential payments are low-single digit percentages of the specified annual sales thresholds. The counterparties are also eligible to 
receive low single-digit royalties on future net sales.  

Under certain circumstances and if certain contingent future events occur, Vertex is eligible to receive up to $395.0 million in

potential specified research, development, regulatory and commercial milestones and tiered single-digit percentage royalties on future 
net sales related to a specified target under an amendment to the 2015 Collaboration Agreement defined in Note 9 below. In addition,
Vertex has the option to conduct research at their own cost in certain defined areas that, if beneficial to the CTX001 program and 
ultimately achieves regulatory approval, then the Company could owe Vertex certain milestone payments aggregating to high eight 
digits, subject to certain limitations on the profitability of the CTX001 program. Refer to Note 9 for further discussion on the 
Company’s arrangements with Vertex.

Other Matters 

  On December 15, 2016, the Company entered into a Consent to Assignments, Licensing and Common Ownership and 

Invention Management Agreement (the “Invention Management Agreement”) with UC, Vienna, Dr. Charpentier, Intellia 
Therapeutics, Inc., Caribou Biosciences, Inc., ERS Genomics Ltd. and one of the Company’s subsidiaries. Under the Invention 
Management Agreement, the Company is obligated to share costs related to patent maintenance, defense and prosecution. For the
years ended December 31, 2021, 2020 and 2019, the Company incurred $5.8 million, $4.5 million and $2.9 million, respectively, in
shared costs. The Company recorded accrued legal costs from the cost sharing of $4.0 million and $2.5 million as of December 31, 
2021 and 2020, respectively. The Company is unable to predict the outcome of these matters and is unable to make a meaningful 
estimate of the amount or range of loss, if any, that could result from an unfavorable outcome.

Litigation

In the ordinary course of business, the Company is from time to time involved in lawsuits, investigations, proceedings and 
threats of litigation related to, among other things, the Company’s intellectual property estate (including certain in-licensed intellectual 
property), commercial arrangements and other matters.  Such proceedings may include quasi-litigation, inter partes administrative
proceedings in the U.S. Patent and Trademark Office and the European Patent Office involving the Company’s intellectual property
estate including certain in-licensed intellectual property. The outcome of any of the foregoing, regardless of the merits, is inherently 
uncertain. In addition, litigation and related matters are costly and may divert the attention of Company’s management and other 
resources that would otherwise be engaged in other activities.  If the Company is unable to prevail in any such proceedings, the 
Company’s business, results of operations, liquidity and financial condition could be adversely affected.

F-20

9. Significant Contracts

Agreements with Vertex Pharmaceuticals Incorporated and certain of its subsidiaries

Summary 

On October 26, 2015, the Company entered into a strategic collaboration, option and license agreement, or the 2015 
Collaboration Agreement, with Vertex. The 2015 Collaboration Agreement is focused on the use of the Company’s CRISPR/Cas9
gene-editing technology to discover and develop potential new treatments aimed at the underlying genetic causes of human disease. 

On December 12, 2017, the Company and Vertex entered into Amendment No. 1 to the 2015 Collaboration Agreement, or 
Amendment No. 1, and the Joint Development Agreement, or the JDA. Amendment No. 1, among other things, modified certain 
definitions and provisions of the 2015 Collaboration Agreement to make them consistent with the JDA and clarified how many 
options are exercised (or deemed exercised) in connection with certain targets specified under the 2015 Collaboration Agreement. 
Amendment No. 1 also amended other provisions of the 2015 Collaboration Agreement, including the expiration terms. 

In connection with the 2015 Collaboration Agreement, Vertex made a nonrefundable upfront payment of $75.0 million. Under 

the 2015 Collaboration Agreement, Vertex agreed to fund the discovery activities conducted pursuant to the agreement while retaining 
options to co-exclusive and exclusive licenses. In December 2017, upon execution of the JDA and Amendment No. 1, Vertex
exercised its option to obtain a co-exclusive license to develop and commercialize hemoglobinopathy and beta-globin targets. As such,
for potential hemoglobinopathy treatments, including treatments for sickle cell disease, the Company and Vertex agreed to share 
equally all research and development costs and worldwide revenues. In connection with the JDA, the Company received a $7.0 
million up-front payment from Vertex and subsequently received a one-time low seven-digit milestone payment upon the dosing of 
the second patient in a clinical trial with the initial product candidate. In addition, upon execution of the JDA and Amendment No. 1, 
it was clarified that Vertex may elect to license up to four remaining targets, for which it will lead global development and 
commercialization activities, and the Company received the right to receive up to $420.0 million in development, regulatory and 
commercial milestones and royalties on net product sales for each of the targets (inclusive of $10 million due upon exercise of each 
exclusive option).

In June 2019, the Company and Vertex entered into a series of agreements, which closed on July 23, 2019, including a strategic

collaboration and license agreement, or the 2019 Collaboration Agreement, for the development and commercialization of products
for the treatment of Duchenne muscular dystrophy, or DMD, and Myotonic Dystrophy Type 1, or DM1. Under the terms of the 2019 
Collaboration Agreement, the Company received an upfront, nonrefundable payment of $175.0 million. In addition, the Company was 
initially eligible to receive potential aggregate payments of up to $825.0 million based upon the successful achievement of specified 
research, development, regulatory and commercial milestones for the DMD and DM1 programs.

The Company is also eligible to receive tiered royalties on future net sales on any products that may result from this 
collaboration. For the DMD program, Vertex is responsible for all research, development, manufacturing and commercialization
activities and all related costs. For the DM1 program, the Company performed specified guide RNA research and Vertex is 
responsible for all other research, development, manufacturing and commercialization costs. Upon Investigational New Drug, or IND, 
application filing, the Company has the option to forego the DM1 milestones and royalties, and instead, co-develop and co-
commercialize all DM1 products globally in exchange for payment of 50% of research and development costs incurred by Vertex 
from the effective date of the agreement through IND filing.

In connection with the execution of the 2019 Collaboration Agreement, the Company and Vertex entered into a second 
amendment to the 2015 Collaboration Agreement, or Amendment No. 2. Among other things, Amendment No. 2 modified certain 
definitions and provisions of the 2015 Collaboration Agreement to make them consistent with the 2019 Collaboration Agreement and 
set forth the number and identity of the collaboration targets under the 2015 Collaboration Agreement. The Company and Vertex 
agreed that one of the four remaining options under the 2015 Collaboration Agreement, as amended, would not be exercised; instead, 
the Company reacquired the exclusive rights and agreed to conduct research and development activities for the specified target. Vertex 
will have the option to co-develop and co-commercialize the specified target upon IND filing in exchange for payment of 50% of 
research and development costs incurred by the Company from the effective date of the agreement through IND filing. If Vertex does
not exercise its option to co-develop and co-commercialize the specified target, Vertex is eligible to receive up to $395.0 million in 
potential specified research, development, regulatory and commercial milestones and tiered single-digit royalties on future net sales.

F-21

In October 2019, Vertex exercised the remaining three options granted to it under the 2015 Collaboration Agreement to 

exclusively license the collaboration targets developed under the 2015 Collaboration Agreement, resulting in a payment of $30.0 
million to the Company in the fourth quarter of 2019. In addition, the Company achieved the first milestone under the 2019 
Collaboration Agreement in the first quarter of 2020 and, in connection therewith, received a payment of $25.0 million in April 2020.
The Company achieved the second milestone under the 2019 Collaboration Agreement in the fourth quarter of 2021 and, in 
connection therewith, received a payment of $12.5 million in December 2021. As of December 31, 2021, the Company is eligible to 
receive remaining potential future milestones of $775.0 under the 2019 Collaboration Agreement.   

In April 2021, the Company and Vertex agreed to amend and restate the JDA and entered into an Amended and Restated Joint 
Development and Commercialization Agreement, or the “A&R Vertex JDCA,” pursuant to which the parties agreed to, among other 
things, (a) adjust the governance structure for the collaboration and adjust the responsibilities of each party thereunder, whereby
Vertex shall lead and have all decision making (i.e., control) in relation to the CTX001 program prospectively; (b) adjust the 
allocation of net profits and net losses between the parties with respect to CTX001 only, which will be allocated 40% to the Company 
and 60% to Vertex, prospectively; and (c) exclusively license (subject to the Company’s reserved rights to conduct certain activities) 
certain intellectual property rights to Vertex relating to the specified product candidates and products (including CTX001) that may be
researched, developed, manufactured and commercialized on a worldwide basis under such agreement. The transaction contemplated 
by the A&R Vertex JDCA closed in the second quarter of 2021. The Company will provide certain specified transition services to 
Vertex in connection with the agreement. 

In connection with the closing of the transaction contemplated by the A&R Vertex JDCA, the Company received a $900.0
million up-front payment from Vertex. Additionally, the Company is eligible to receive a one-time $200.0 million milestone payment 
upon receipt by Vertex of the first marketing approval of the initial product candidate from the U.S. Food and Drug Administration or 
the European Commission. With respect to CTX001 only, the net profits and net losses, as applicable, incurred under the A&R Vertex 
JDCA through July 1, 2021 in connection with the initial shared product (i.e., CTX001) were shared equally between the Company 
and Vertex, and beginning July 1, 2021, the net profits and net losses, as applicable, incurred under the A&R Vertex JDCA are
allocated 40% to the Company and 60% to Vertex. Additionally, the A&R Vertex JDCA allows the Company to defer a portion of its 
share of costs under the arrangement if spending on the CTX001 program exceeds specified amounts. Any deferred amounts are only 
payable to Vertex as an offset against future profitability of the CTX001 program and the amounts payable are capped at a specified 
maximum amount per year.   

Accounting for the Vertex Agreements

The 2015 Collaboration Agreement, Amendment No. 1, and JDA are collectively the “2015 Agreements” and the 2019 

Collaboration Agreement and Amendment No. 2.  are collectively the “2019 Agreements.” The 2015 Collaboration Agreement, 
Amendment No. 1, Amendment No. 2, JDA, A&R Vertex JDCA and 2019 Collaboration Agreement are collectively the “Vertex 
Agreements.”

The Vertex Agreements include components of a customer-vendor relationship as defined under ASC 606, collaborative 
arrangements as defined under ASC 808 and research and development costs as defined under ASC 730, Research and Development,
or ASC 730. Additionally, the A&R Vertex JDCA allows the Company to defer a portion of its share of costs under the arrangement if 
spending on the CTX001 program exceeds specified amounts, which are only payable to Vertex as an offset against future profitability 
of the CTX001 program up to a maximum amount per year.

Accounting Analysis Under ASC 606

Accounting for the A&R Vertex JDCA 

Identification of the Contract

The A&R Vertex JDCA represented a contractual modification to the JDA. For accounting purposes, the A&R Vertex JDCA

was treated as a separate contract.   

Identification of Performance Obligations

The Company concluded the A&R Vertex JDCA contained a single material promise, an exclusive worldwide license granting
Vertex an additional 10% economic interest in the CTX001 program and the right to control development and commercialization of 
CTX001, or the “CTX001 Exclusive License.” The Company concluded the CTX001 Exclusive License was both capable of being 
distinct and distinct within the context of the A&R Vertex JDCA, and the CTX001 Exclusive License was sold at its estimated 
standalone selling price, or “ESSP.” As such, the CTX001 Exclusive License represented a separate performance obligation. 

F-22

Determination of Transaction Price

The transaction price was comprised of the upfront payment of $900.0 million. The Company determined that all other possible 
variable consideration resulting from milestones and royalties discussed above was fully constrained at the time of the transaction. The 
Company will reevaluate the transaction price in each reporting period.

Allocation of Transaction Price to Performance Obligations

The selling price of the performance obligation was determined based on the Company’s ESSP. The Company developed the 
ESSP for the CTX001 Exclusive License with the objective of determining the price at which it would sell such an item if it were to
be sold regularly on a standalone basis.

The ESSP for the CTX001 Exclusive License was determined to be approximately $900.0 million. The ESSP was determined 

based on 10% of the probability and present value adjusted cash flows from projected worldwide net profit for CTX001 based on
probability assessments, projections based on internal forecasts, industry data, and information from other guideline companies within
the same industry and other relevant factors. As the Company determined the CTX001 Exclusive License was the only performance 
obligation, the entire transaction price was allocated to the CTX001 Exclusive License. The aforementioned ESSP reflects the level of 
risk and expected probability of success inherent in the nature of the associated research area. 

Recognition of Revenue

The Company determined that the CTX001 Exclusive License represented functional intellectual property, as the intellectual 
property provides Vertex with the ability to perform a function or task in the form of research and development, manufacturing and 
commercialization. As such, the revenue related to the CTX001 Exclusive License was recognized at the point in time, which was 
upon transfer in the second quarter of 2021. 

Accounting for the 2019 Agreements

Identification of the Contract

The 2019 Agreements represented a contract modification to the 2015 Agreements. As a result, the 2019 Agreements and the 

2015 Agreements are combined for accounting purposes and treated as a single arrangement.  

Identification of Performance Obligations

The Company concluded the following material promises were both capable of being distinct and distinct within the context of 
the 2019 Agreements and represented separate performance obligations: (i) an exclusive license for worldwide rights for DMD gene 
editing products, or DMD License; (ii) an exclusive license for worldwide rights for DM1 gene editing products, or DM1 License; (iii) 
the performance of specified guide RNA research for DM1, or DM1 R&D Services; (iv) a material right representing the option to
obtain a co-exclusive development and commercialization license for a specified target, or Specified Target Option; (v) three material 
rights representing the option for up to three exclusive licenses to develop and commercialize the collaboration targets, or 
Collaboration Target Options; and (vi) the waiving of Vertex’s material right associated with its option to a fourth exclusive license in
connection with the Company’s reacquisition of exclusive rights to the specified target.

Determination of Transaction Price

The initial overall transaction price was determined based on the remaining transaction price from the 2015 Agreements, as well 

as the transaction price from the 2019 Agreements. The initial transaction price included variable consideration estimated using the 
most likely amount methodology. The Company determined the initial transaction price totaling $268.6 million was comprised of: (i) 
$57.8 million of pre-existing deferred revenue from the 2015 Agreements; (ii) non-cash consideration of $10.0 million related to the
waiving of Vertex’s material right associated with its option to a fourth exclusive license in connection with the Company’s 
reacquisition of exclusive rights to the specified target; (iii) an upfront payment of $175.0 million; (iv) variable consideration of $25.0 
million which represented the Company’s estimate related to a near-term research and development milestone for which the Company
determined that it is not probable that a significant reversal of cumulative consideration will occur at the onset of the transaction; and 
(v) variable consideration of $0.8 million which represents the Company’s estimate of payments from Vertex for DM1 R&D Services. 

F-23

In December 2021, the Company achieved a milestone under the 2019 Collaboration Agreement. In connection therewith, the 
Company adjusted the transaction price to include $12.5 million in previously constrained variable consideration. The milestone was
allocated to the performance obligations using the relative standalone selling price method, and revenue of $12.0 million was 
recognized for amounts allocated to fully satisfied performance obligations. Amounts allocated to unsatisfied performance obligations
of $0.5 million were included in deferred revenue.

The Company determined that all other possible variable consideration resulting from milestones and royalties discussed above

was fully constrained as of December 31, 2021. The Company will re-evaluate the transaction price in each reporting period.

Allocation of Transaction Price to Performance Obligations

The selling price of each performance obligation was determined based on the Company’s ESSP. The Company developed the 

ESSP for all the performance obligations included in the Vertex Agreements with the objective of determining the price at which it 
would sell such an item if it were to be sold regularly on a standalone basis. The Company then allocated the transaction price to each
performance obligation on a relative standalone selling price basis. 

The ESSP for the DMD License and DM1 License was determined to be $224.6 million and $76.2 million, respectively. The 

ESSP was determined based on probability and present value adjusted cash flows from projected worldwide net profit for each of the 
respective programs based on probability assessments, projections based on internal forecasts, industry data, and information from 
other guideline companies within the same industry and other relevant factors. On a relative basis, $151.1 million and $51.3 million of 
the initial transaction price was allocated to the DMD License and DM1 License, respectively.

The ESSP for the Specified Target Option material right was determined to be $17.5 million, which was based on the

incremental discount between (i) the value of the probability and present value adjusted cash flows from the equal sharing of projected 
worldwide net profit increased by the value of the option provided to Vertex less (ii) the expected exercise price at the time of option
exercise. The present value adjusted cash flows also considered projections based on internal forecasts, industry data, and information
from other guideline companies within the same industry and other relevant factors. On a relative basis $11.8 million of the initial 
transaction price was allocated to the Specified Target Option material right.

The ESSP for each of the three Collaboration Target Option material rights was determined to be $25.0 million, $22.2 million

and $22.2 million, respectively, which was determined based on the probability and present value adjusted cash flows from milestone 
payments owed for exclusive licenses, less the price paid to exercise each option. On a relative basis, $46.7 million of the initial
transaction price was allocated to the Collaboration Target Option material rights.  

The aforementioned ESSPs reflect the level of risk and expected probability of success inherent in the nature of the associated 

research area.  

The ESSP for the waiving of Vertex’s material right associated with its option to a fourth exclusive license under the 2015 
Agreements was determined to be $10.0 million, or the contractual value of the option. On a relative basis, $6.7 million of the initial 
transaction price was allocated to the waiving of Vertex’s material right associated with its option to a fourth exclusive license under 
the 2015 Agreements. 

The ESSP for the DM1 R&D Services was determined to be $1.7 million, which was based on estimates of the associated effort 

and cost of the services, adjusted for a reasonable profit margin that would be expected to be realized under similar contracts. On a 
relative basis, $1.1 million of the initial transaction price was allocated to the DM1 R&D Services.

As discussed above, in December 2021, the Company adjusted the transaction price of the 2019 Collaboration Agreement to

include $12.5 million of previously constrained variable consideration associated with a research milestone. The milestone was
allocated to the performance obligations using the relative standalone selling price method based on the ESSP's described herein. As a
result, revenue of $12.0 million was recognized for amounts allocated to fully satisfied performance obligations. Amounts allocated to 
unsatisfied performance obligations of $0.5 million were included in deferred revenue.

Recognition of Revenue

The Company determined that the DMD License and DM1 License represent functional intellectual property, as the intellectual 
property provides Vertex with the ability to perform a function or task in the form of research and development. As such, the revenue
related to the licenses was recognized at the point in time in which they were delivered during the third quarter of 2019. 

F-24

The revenue allocated to the waiving of Vertex’s material right associated with its option to a fourth exclusive license in 
connection with Company’s reacquisition of exclusive rights to the specified target was recognized at the point in time in which the
option was waived, on the effective date of the 2019 Agreements.  

The Company concluded that the Specified Target Option and Collaboration Target Options were considered material rights 

under the Vertex Agreements. Revenue related to the three Collaboration Target Options material right was recognized at the point in 
time in which Vertex exercised the Collaboration Target Options, which occurred in the fourth quarter of 2019.   

The Company recognized revenue related to the DM1 R&D Services over time as the services were rendered, which concluded 

in the fourth quarter of 2021. 

Revenue recognized in connection with the Vertex Agreements

Revenue recognized under the Vertex Agreements for the year ended December 31, 2021 was $913.1 million and was 
comprised of (i) revenue related to the exclusive worldwide license for CTX001 of $900.0 million, (ii) revenue related to the second 
DM1 milestone  under the 2019 Agreements of $12.0 million, and (iii) revenue recognized in connection with research and 
development services. Revenue recognized under the Vertex Agreements for the year ended December 31, 2020 was not material. 

Revenue recognized under the Vertex Agreements for the year ended December 31, 2019 was $289.1 million. The $289.1 
million of revenue recognized for the year-ended December 31, 2019 was comprised of (i) revenue related to the DMD License and 
DM1 License of $202.4 million, which was recognized at the point in time in which the licenses were delivered, (ii) revenue related to 
the Collaboration Target Options material right of $76.7 million, which was recognized upon the exercise of the Collaboration Target 
Options by Vertex and is inclusive of the $30.0 million payment made by Vertex to exercise those options, (iii) revenue allocated to 
the waiving of Vertex’s material right associated with its option to a fourth exclusive license in connection with the Company’s
reacquisition of exclusive rights to the specified target of $6.7 million, which was recognized at the point in time in which the option 
was waived, (iv) revenue recognized in connection with DM1 R&D Services of $0.1 million and (v) revenue recognized of $0.1 
million related to both research and development services as well as the amortization of the non-exclusive research license under the 
2015 Agreements. Additionally, the Company recognized revenue related to a one-time low seven-digit milestone payment upon the 
dosing of the second patient in a clinical trial with the initial product candidate in the third quarter of 2019. 

As of December 31, 2021 and 2020 there was $0.0 million and $0.4 million of current deferred revenue related to the

collaboration with Vertex, respectively. As of December 31, 2021 and 2020, there was $12.3 million and $11.8 million of non-current 
deferred revenue, respectively, related to the collaboration with Vertex. The transaction price allocated to the remaining performance
obligations was $12.3 million. 

Future Milestones under the Vertex Agreements

The Company has evaluated the milestones that may be received in connection with the Vertex Agreements. As discussed 
above, the Company is eligible to receive up to $410.0 million in additional development, regulatory and commercial milestones and 
royalties on net product sales for each of the three collaboration targets that Vertex licensed in the fourth quarter of 2019. Each 
milestone is payable only once per collaboration target, regardless of the number of products directed to such collaboration target that 
achieve the relevant milestone event.

The Company is eligible to receive additional potential future payments of up to $775.0 million based upon the successful
achievement of specified development, regulatory and commercial milestones for the DMD and DM1 programs. The Company is also 
eligible to receive tiered royalties on future net sales on any products that may result from this collaboration; however, the Company 
has the option to forego the DM1 milestones and royalties to co-develop and co-commercialize all DM1 products globally. 

The Company is eligible to receive additional potential future payments of up to $200.0 million upon receipt by Vertex of the 

first marketing approval of the initial product candidate from the U.S. Food and Drug Administration or the European Commission. In
addition, the Company has the option to conduct research at their own cost in certain defined areas that, if beneficial to the CTX001 
program and CTX001 ultimately achieves regulatory approval in such areas, then the Company could be entitled to certain milestone 
payments aggregating to high eight digits from Vertex.

F-25

Each of the remaining milestones are fully constrained as of December 31, 2021. There is uncertainty that the events to obtain 

the research and developmental milestones will be achieved given the nature of clinical development and the stage of the 
CRISPR/Cas9 technology. The remaining research, development and regulatory milestones will be constrained until it is probable that 
a significant revenue reversal will not occur. Commercial milestones and royalties relate predominantly to a license of intellectual 
property and are determined by sales or usage-based thresholds. The commercial milestones and royalties are accounted for under the 
royalty recognition constraint and will be accounted for as constrained variable consideration. The Company applies the royalty 
recognition constraint for each commercial milestone and will not recognize revenue for each until the subsequent sale of a licensed 
product (achievement of each) occurs.  

Accounting Analysis under ASC 808

In connection with the Vertex Agreements, the Company identified the following collaborative elements, which are accounted 
for under ASC 808: (i) development and commercialization services for shared products, including any transition services related to 
CTX001 under the A&R JDCA; (ii) R&D Services for follow-on products; and (iii) committee participation. The related impact of the
cost sharing associated with research and development is included in research and development expense. Expenses related to services
performed by the Company are classified as research and development expense. Payments received from Vertex for partial 
reimbursement of expenses are recorded as a reduction of research and development expense. 

During the years ended December 31, 2021, 2020 and 2019, the Company recognized $111.6 million, $48.6 million, and $29.2 
million of research and development expense related to the Vertex Agreements, respectively. Research and development expense for 
the years ended December 31, 2021, 2020 and 2019 is net of $47.4 million, $28.2 million, and $15.9 million of reimbursements from
Vertex, respectively. 

Accounting Analysis under ASC 730

In connection with the 2019 Agreements, the Company and Vertex agreed that one of the four remaining options under the 2015 

Agreements, as amended, would not be exercised; instead, the Company will conduct research and development activities for a
specified target. Vertex will have the option to co-develop and co-commercialize the specified target upon IND filing in exchange for 
payment of 50% of research and development costs incurred by the Company from the effective date of the agreement through IND
filing. If Vertex does not exercise its option to do so within a specified time period, Vertex is eligible to receive up to $395.0 million 
in potential specified research, development, regulatory and commercial milestones and tiered single-digit royalties on future net sales.

In connection therewith, the Company determined that in order for the Company to obtain the right to conduct research and 

development activities on the specified target, the Company had waived its right to receive an option exercise payment of $10.0 
million from Vertex, which was included as non-cash consideration in the transaction price for the 2019 Agreements described above.
The Company then subsequently reacquired its rights to the specified target by waiving payment owed by Vertex of $10.0 million for 
a license that represents in-process research and development and therefore, $10.0 million of non-cash consideration was fully 
expensed upon the execution of the 2019 Agreements. The Company also determined that research and development services through 
IND for the specified target and any payment of future development and commercialization milestones, as well as sales-based 
milestones and royalties for the specified target, would be accounted for as research and development costs under ASC 730 and 
expensed as incurred.  In addition, the Company also determined that should the Company elect its option to co-develop and co-
commercialize all DM1 products globally, it will record the option fee as research and development expense upon exercise.  

In connection with the A&R Vertex JDCA, Vertex has the option to conduct research at their own cost in certain defined areas 

that, if beneficial to the CTX001 program and CTX001 ultimately achieves regulatory approval in such areas, then the Company could 
owe Vertex certain milestone payments aggregating to high eight digits, subject to certain limitations on the profitability of the
CTX001 program.

Agreements with Bayer Healthcare LLC

Summary

On December 19, 2015, the Company entered into an agreement with Bayer, to establish a joint venture to focus on the research 

and the development of new therapeutics to cure blood disorders, blindness and congenital heart disease. On February 12, 2016, the
Company and Bayer completed the formation of the joint venture entity, Casebia. Bayer and the Company each received a 50% equity 
interest in the entity in exchange for their respective contributions to the entity. At that time, the Company also entered into a separate 
service agreement with Casebia, under which the Company agreed to provide compensated research and development services.
Collectively, these agreements are referred to as the “2015 Casebia Agreements.”  

F-26

On December 13, 2019, the Company, Bayer and Casebia entered into a series of transactions by which, among other things, the

Company acquired 100% of the partnership interests in Casebia, or the Retirement Agreement, the Company and Bayer terminated 
their joint venture, or the Joint Venture Termination Agreement, and the Company and Bayer entered into a new option agreement, or 
the 2019 Option Agreement. Collectively, these agreements are referred to as the “2019 Casebia Agreements.”

In connection with the Retirement Agreement, Casebia retired Bayer’s outstanding partnership interests in exchange for $22.0 
million less certain estimated interim operating expenses of $6.0 million, and the Company acquired 100% of the partnership interests
in Casebia.

In connection with entering into the Retirement Agreement, the Company, Bayer and Casebia entered into the Joint Venture 

Termination Agreement. In connection therewith, the Company and Bayer agreed to terminate the Joint Venture Agreement from
December 2015. Under the Joint Venture Termination Agreement, Casebia-owned patents are now co-owned by the Company and 
Bayer, subject to certain exclusive licenses granted therein. Under the Joint Venture Termination Agreement, the Company and Bayer 
each retained rights to their respective contributed intellectual property.  

In connection with entering into the Retirement Agreement and the Joint Venture Termination Agreement, the Company and 

Bayer also entered into the 2019 Option Agreement, under which, among other things, the Company committed to invest a specified 
amount in certain research and development activities as described under “Accounting Analysis – Accounting for 2019 Casebia
Agreements”. In addition, Bayer has an option (exercisable during a specified exercise period defined by future events, but in no event 
longer than 5 years after the effective date of the 2019 Option Agreement) to co-develop and co-commercialize two products for the 
diagnosis, treatment or prevention of certain autoimmune disorders, eye disorders, or hemophilia A disorders. In the event Bayer 
elects to co-develop and co-commercialize a product, the parties will negotiate and enter into a co-development and co-
commercialization agreement, or the Co-Commercialization Agreement, for such product, and Bayer would be responsible for 50% of 
the research and development costs incurred by the Company for such product going forward. Bayer would receive 50% of all profits
from sales of such product and would be responsible for 50% of all losses.

If Bayer elects to exercise its option to co-develop and co-commercialize a product, Bayer will make a one-time $20.0 million 
payment, or the Option Payment, to the Company that will become non-refundable once the parties execute a Co-Commercialization 
Agreement with respect to such optioned product. The Option Payment is payable only once with respect to the first time Bayer 
exercises an option under the 2019 Option Agreement.

In addition, following Bayer’s exercise of its option and/or the execution of the Co-Commercialization Agreement for an 
optioned product, for a period beginning on the effective date of such Co-Commercialization Agreement and ending on the earlier of 
the three month anniversary of such effective date or during the 90-day negotiation process of such Co-Commercialization Agreement, 
Bayer has a right to negotiate an exclusive license to develop and commercialize such optioned product. If Bayer exercises such right, 
the parties will enter into an exclusive license agreement for such optioned product on terms mutually agreeable to the parties. Further, 
the Option Payment paid for such optioned product would become credited against payments due under such exclusive license or any
other exclusive license entered into in connection with the 2019 Option Agreement.

Either party may terminate the 2019 Option Agreement upon the other party’s material breach, subject to specified notice and 
cure provisions. The Company may also terminate the 2019 Option Agreement in the event Bayer commences or participates in any 
action or proceeding challenging the validity or enforceability of any Company patent necessary or useful for the research, 
development, manufacture or commercialization of a product that is the subject of the 2019 Option Agreement. Bayer may also 
terminate the 2019 Option Agreement upon the Company’s bankruptcy or insolvency, or for convenience at any time, after giving
written notice.

Accounting Analysis

Accounting for the 2015 Casebia Agreements

Transactions under the 2015 Casebia Agreements ceased on the effective date of the 2019 Casebia Agreements. There was no

financial impact of the 2015 Casebia Agreements for the years ended December 31, 2021 and 2020. 

For the year ended December 31, 2019, the only element of the 2015 Casebia Agreements accounted for in accordance with 
ASC 808 was the cost sharing activity with Casebia with respect to shared research and technology licenses with other vendors for 
which the Company determined the arrangement was a cost/profit sharing arrangement and not a revenue arrangement. The related 
impact of the cost sharing included in R&D expense for the year ended December 31, 2019 was not material. Cost sharing activity 
ceased with the execution of the 2019 Casebia Agreements.

F-27

For the year ended December 31, 2019, the only element of 2015 Casebia Agreements accounted for in accordance with ASC 

606 was the obligation to perform research and development services for Casebia. Revenue recognized for research and development 
was not material for the year ended December 31, 2019. This performance obligation was terminated upon the execution of the 2019
Casebia Agreements.

Loss from Equity Method Investment

During the year ended December 31, 2019, the Company recognized $5.5 million of stock-based compensation expense related 

to Casebia employees. Unrecognized equity method losses in excess of the Company’s equity investment in Casebia was $72.0 
million as of December 31, 2019. Total net loss of Casebia for the period ending December 13, 2019 (prior to the Company’s 
consolidation of Casebia) was $58.8 million.

Accounting for the 2019 Casebia Agreements

The Company determined that the Retirement Agreement and Joint Venture Termination Agreement resulted in the Company 
obtaining a controlling interest in Casebia and should be accounted for as a separate component from the 2019 Option Agreement. In 
doing so, the Company allocated the consideration transferred of $41.0 million (consisting of $16.0 million of assets acquired net of 
the purchase price, as displayed in the table below, and $25.0 million of cash allocated to the 2019 Option Agreement) between the 
two components using a relative fair value approach. The Company determined the relative fair value related to obtaining a controlling 
interest in Casebia was $32.0 million and the relative fair value of the consideration transferred related to the 2019 Option Agreement 
was $25.0 million, which is comprised of $20.2 million related to certain research and development activities and $4.8 million related 
to certain options as described above.  

As a result of the Retirement Agreement, the Company determined that it had obtained a controlling interest in a VIE, for which 
it became the primary beneficiary. As such, under ASC 810, Consolidation, the Company accounted for the net assets obtained under 
ASC 805, Business Combinations. In accordance therewith, the Company determined the set of acquired assets and assumed liabilities
did not meet the definition of a business, as the Company did not acquire an assembled workforce and thus the Company did not 
acquire substantive processes capable of producing outputs. As such, no goodwill was recorded. The Company measured the fair 
value of the assets and liabilities received, determining the relative fair value was $16.0 million (after paying the $16.0 million for 
Bayer’s 50% interest) and recorded the difference between that amount and the Company’s carrying amount, which was zero, as a
gain within other income (expense). The relative fair value of the assets and liabilities received (exclusive of the $16.0 million paid 
from Casebia to Bayer to retire Bayer’s interest in the JV) was determined as follows (in thousands):   

Fair value
Cash and cash equivalents
Prepaid expenses and other current assets
Property, plant and equipment, net
Operating lease assets
Restricted cash
Accrued expenses and other current liabilities
Operating lease liabilities
Net assets

$

$

Amount

6,784
2,565
9,340
11,003
1,226
(3,915)
(11,003)
16,000

The value of the reacquired rights related to the intellectual property was determined to be insignificant.

The Company determined that the 2019 Option Agreement should be accounted for under ASC 730-20. This determination was 

based on the fact that the financial risk associated with the research and development has been transferred to the Company because
repayment of any of the funds provided by Bayer depends solely on the results of the research and development having a future 
economic benefit. The Company further determined that it had two separate obligations under the 2019 Option Agreements, which 
consist of (i) research and development services and (ii) future delivery of up to two options for products in defined fields. The 
relative fair value of the obligations was determined to be $20.2 million and $4.8 million, respectively. As the Company has accounted 
for its obligations as a contract to perform research and development for others, with respect to the obligation to perform research and 
development services the Company will recognize an offset to research and development expense as the research is performed and, 
with respect to the future delivery of up to two option for products in defined fields, at the earlier of option exercise (at or near IND 
application filing), expiration, or when commercially reasonable efforts to progress the program have been exhausted.

During the years ended December 31, 2021 and 2020, the Company recorded a benefit of $7.0 million and $13.2 million to 
research and development expense for qualifying expenses incurred under the 2019 Option Agreement. As of December 31, 2021, the 

F-28

Company has recorded $4.8 million in other long-term liabilities consisting of the relative fair value of the options, which was 
unchanged from December 31, 2020. As of December 31, 2020, the Company recorded $7.0 million in other current liabilities relating 
to certain research and development obligations to be satisfied within one year of the balance sheet date. All research and development 
obligations under the 2019 Option Agreement were satisfied as of December 31, 2021.        

10. Share Capital 

The Company had 145,364,335 and 115,172,786 authorized common shares as of December 31, 2021 and 2020, respectively, 

with a par value of CHF 0.03 per share. Share Capital consisted of the following: 

Type of Share Capital
Common shares
Common shares
Common shares
Common shares

Conditional Capital
Registered share capital
Authorized share capital
Conditional share capital - Bonds or similar debt instruments
Conditional share capital - Employee benefit plans

Total

As of December 31,

2021
80,321,227
39,316,975
4,919,700
20,806,433
145,364,335

2020
75,133,951
17,625,426
4,919,700
17,493,709
115,172,786

Included in registered share capital are 5,038,262 shares registered, which are held by the Company and its subsidiaries and are 

reserved for future issuance for financings.

Common Share Issuances

Recent Public Offerings

In November 2019, the Company sold 4.9 million common shares through an underwritten public offering (inclusive of shares 
sold pursuant to the exercise of the underwriters’ option to purchase additional shares) at a public offering price of $64.50 per share 
for aggregate net proceeds of $297.4 million, which were net of equity issuance costs of $17.8 million. Additional equity issuance 
costs of $3.0 million for stamp taxes were also paid in 2019.

In July 2020, the Company sold 7.4 million common shares through an underwritten public offering (inclusive of shares sold 
pursuant to the exercise of the underwriters’ option to purchase additional shares) at a public offering price of $70.00 per share for 
aggregate net proceeds of $484.8 million, which were net of equity issuance costs and stamp tax of $32.5 million. 

At-the-Market Offerings

In the first quarter of 2019, the Company began to issue and sell securities under an Open Market Sale AgreementSM entered 

into with Jefferies LLC, or Jefferies, in August 2018, under which the Company was able to offer and sell, from time to time, common
shares having aggregate gross proceeds of up to $125.0 million, or the 2018 ATM. During the year ended December 31, 2019, the 
Company issued and sold an aggregate of 2.8 million common shares at an average price of $44.38 per share for aggregate net 
proceeds of $120.6 million, which were net of equity issuance costs of $4.4 million. In addition, the Company paid approximately 
$0.9 million in stamp taxes during the year ended December 31, 2019 and accrued an additional $0.3 million for stamp taxes as of 
December 31, 2019.  The Company paid the $0.3 million for stamp taxes in 2020.

In August 2019, the Company entered into an Open Market Sale AgreementSM with Jefferies under which the Company was able 

to offer and sell, from time to time at its sole discretion through Jefferies, as its sales agent, its common shares, or the August 2019
Sales Agreement. In August 2019, the Company filed a prospectus supplement with the SEC to offer and sell, from time to time, 
common shares having aggregate gross proceeds of up to $200.0 million, or the 2019 ATM. During the year ended December 31, 
2020, the Company issued and sold an aggregate of 2.2 million common shares under the 2019 ATM at an average price of $89.47 per 
share for aggregate proceeds of $195.5 million, which were net of equity issuance costs of $4.5 million.

In December 2020, in connection with the August 2019 Sales Agreement, the Company filed a prospectus supplement with the
SEC to offer and sell, from time to time, common shares having aggregate gross proceeds of up to $350.0 million, or the 2020 ATM.
During the year ended December 31, 2020, the Company issued and sold an aggregate of 1.8 million common shares under the 2020 
ATM at an average price of $169.57 per share for aggregate proceeds of $298.0 million, which were net of equity issuance costs of 
$4.5 million. Additional equity issuance costs for stamp taxes related to shares sold in 2020 related to the 2019 ATM and 2020 ATM
were $4.9 million, of which $4.0 million was accrued as of December 31, 2020 and paid in 2021. 

In January 2021, the Company issued and sold under the 2020 ATM an aggregate of 0.3 million common shares at an average 

price of $162.46 per share with aggregate proceeds of $46.7 million, which were net of equity issuance costs of $0.7 million. An 
additional $0.5 million of stamp taxes related to this amount was paid in 2021.

F-29

In January 2021, in connection with the August 2019 Sales Agreement, the Company filed a prospectus supplement with the

SEC to offer and sell, from time to time, common shares having aggregate gross proceeds of up to $600.0 million, or the 2021 ATM. 
As of December 31, 2021, the Company has issued and sold an aggregate of 1.1 million common shares under the 2021 ATM at an
average price of $169.82 per share for aggregate proceeds of $177.8 million, which were net of equity issuance costs of $2.4 million. 
An additional $1.8 million of stamp taxes related to this amount was paid in 2021.

The Common Shares have the following characteristics:

Voting Rights 

The holders of common shares are entitled to one vote for each common share held at all meetings of shareholders. 

Dividends

The holders of common shares are entitled to receive dividends, if and when resolved upon by the general meeting of 
shareholders based on a respective proposal by the Board of Directors and provided that the Company disposes of sufficient freely 
distributable reserves. As of December 31, 2021, no dividends have been declared or paid since the Company’s inception.

Liquidation

The holders of the common shares are entitled to share ratably in the Company’s assets available for distribution to shareholders 

in the event of any voluntary or involuntary liquidation, dissolution or winding up of the Company or upon the occurrence of a
deemed liquidation event. 

11. Equity-based Compensation 

Option and Grant Plans

In April 2015, the Company’s shareholders approved the 2015 Stock Option and Grant Plan, or the 2015 Plan, and in July 2016, 

the Company’s shareholders approved the 2016 Stock Option and Incentive Plan, or the 2016 Plan.  In May 2018, the Company’s 
shareholders approved the 2018 Stock Option and Incentive Plan, or the 2018 Plan (collectively, the “Plans”). Subsequent to the IPO, 
no further options were granted under the 2015 Plan. The Plans provide for the issuance of equity awards in the form of restricted 
shares, options to purchase common shares which may constitute incentive stock options, or ISOs, or non-statutory stock options, or 
NSOs, unrestricted stock unit grants, and qualified performance and market-based awards to eligible employees, officers, directors, 
non-employee consultants and other key personnel. Terms of the equity awards, including vesting requirements, are determined by the 
Company’s board of directors, subject to the provisions of the Plans. Options granted by the Company typically vest over four years
and have a contractual life of ten years. Restricted stock unit grants typically vest over two to three years. At December 31, 2021, the 
Company had 25,005,365 common shares authorized for issuance under the 2018 Plan and 10,298,664 common shares available for 
future grant under the 2018 Plan.

Equity-Based Compensation Expense

The Company recognized stock-based compensation expense totaling $102.4 million, $66.0 million, and $49.5 million during 

the years ended December 31, 2021, 2020 and 2019, respectively. Stock-based compensation expense by classification within the
consolidated statements of operations and comprehensive income (loss) is as follows (in thousands):

Research and development
General and administrative
Loss from equity method investment

Total

2021

Years Ended December 31,
2020

2019

$

$

59,683
42,707
—
102,390

$

$

35,120
30,898
—
66,018

$

$

23,273
20,784
5,467
49,524

As of December 31, 2021, there was $150.6 million and $71.4 million of unrecognized compensation expense related to 
unvested stock options and restricted stock units, respectively, that is expected to be recognized over a weighted-average period of 2.7
and 2.5 years, respectively.

F-30

Stock Options

The fair value of each option issued to employees was estimated at the date of grant using the Black-Scholes option pricing 

model with the following weighted-average assumptions:  

Options granted
Weighted-average exercise price
Weighted-average grant date fair value
Assumptions:

Expected volatility
Expected term (in years)
Risk-free interest rate
Expected dividend yield

Years Ended December 31,

2021
1,616,255
124.32
77.38

$
$

2020
2,182,773
68.91
42.28

$
$

2019
2,832,784
39.16
24.57

$
$

70.3%
6.0
1.0%
0.0%

69.2%
6.0
0.6%
0.0%

68.9%
6.0
2.2%
0.0%

The following table summarizes stock option activity under the Company’s equity award plans (intrinsic value in thousands): 

Outstanding at December 31, 2020

Granted
Exercised
Cancelled or forfeited

Outstanding at December 31, 2021
Exercisable at December 31, 2021
Vested and expected to vest at December 31,
2021

Shares

$
8,101,980
1,616,255
$
(1,245,071) $
(660,182) $
$
7,812,982
$
4,598,353

Weighted-
Average
Exercise Price

42.44
124.32
30.96
79.54
58.07
40.86

7,812,982

$

58.07

Weighted-
Average
Remaining
Contractual
Term (years)

Aggregate
Intrinsic
Value

7.8

$

896,666

7.4
6.6

7.4

$

$

219,103
174,056

219,103

During 2021 and 2020, the Company did not grant stock option awards subject to performance-based or market-based vesting 
conditions. As of December 31, 2021, options to purchase 998,504 common shares subject to performance-based vesting conditions
were vested, as performance conditions were achieved, and there were 123,057 options to purchase common shares subject to 
performance-based vesting conditions outstanding. Activity related to stock options subject to performance-based vesting conditions is
included in the table above. 

During 2017, the Company granted 150,000 options with market-based vesting conditions, of which 75% vest at the end of a 
three-year service period and 25% vest at the end of a four-year service period. Upon achieving a specified average stock price in prior 
years, the market conditions were satisfied. Expense for the options is being recognized over the requisite service period. As of 
December 31, 2021, 150,000 of the stock options had vested.    

The total intrinsic value (the amount by which the fair market value exceeded the exercise price) of stock options exercised 

during the year ended December 31, 2021, 2020 and 2019 was $119.5 million, $104.2 million, and $42.2 million, respectively.

F-31

Restricted Stock

The following table summarizes the restricted stock activity under the Company’s equity award plans: 

Unvested balance at December 31, 2020

Granted
Vested
Cancelled or forfeited

Unvested balance at December 31, 2021

Shares

894,092
628,175
(455,440)
(132,652)
934,175

$

$

Weighted-
Average
Grant Date
Fair Value

70.55
111.73
58.00
100.25
100.14

During the years ended December 31, 2021, 2020 and 2019, the total fair value of restricted stock vested was $45.3 million, 

$21.6 million, and $3.6 million, respectively.

Award modifications

Equity award modifications for certain equity awards held by departing employees and non-employees for the years ended 

December 31, 2021, 2020 and 2019 were not material to the Company's stock-based compensation expense.

Employee Stock Purchase Plan

On July 19, 2016, the Company’s board of directors adopted its 2016 Employee Stock Purchase Plan, or the ESPP Plan, which 

was subsequently approved by its shareholders and became effective on October 19, 2016. The ESPP Plan authorizes the initial 
issuance of up to a total of 0.4 million shares of the Company’s common stock to participating employees. The Company activated its
ESPP Plan on January 1, 2020.  The Company issued 21,590 and 13,410 shares under the ESPP during the years ended December 31, 
2021 and 2020, respectively.   

12. Net Income (Loss) Per Share Attributable to Common Shareholders

Basic net income (loss) per share is calculated by dividing net income (loss) attributable to common shareholders by the

weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share is calculated by 
dividing the net income (loss) attributable to common shareholders by the weighted-average number of common share equivalents 
outstanding for the period, including any dilutive effect from outstanding stock options and warrants using the treasury stock method. 
The Company’s net income (loss) is net income (loss) attributable to common shareholders for all periods presented.

The following table sets forth the computation of basic and diluted net income (loss) per share for the periods ended (in 

thousands, except share and per share amounts):

Year ended December 31,
2020

2021

2019

Net income (loss)
Basic weighted-average common shares outstanding
Effect of potentially dilutive securities:
Outstanding options
Unvested restricted common shares

Diluted weighted-average common shares outstanding
Net income (loss) per common share — basic
Net income (loss) per common share — diluted

$

377,661 $

(348,865) $

75,948,686

65,949,672

66,858
54,392,304

3,990,579
454,231
80,393,496

—
—
65,949,672

$
$

4.97 $
4.70 $

(5.29) $
(5.29) $

2,406,962
133,532
56,932,798
1.23
1.17

F-32

The Company did not include the securities in the following table in the computation of the net income (loss) per share 

calculations because the effect would have been anti-dilutive during each period:

Outstanding options
Unvested restricted common shares
ESPP
Total

13. 401(k) Savings Plan

Year ended December 31,
2020

2021
1,765,881
225,904
6,671
1,998,456

8,101,980
894,092
11,257
9,007,329

2019
3,789,129
108,625
—
3,897,754

The Company established a defined-contribution savings plan under Section 401(k) of the Internal Revenue Code (the “401(k) 

Plan”) in November 2016. The 401(k) Plan covers all employees who meet defined minimum age and service requirements and allows 
participants to defer a portion of their annual compensation on a pretax basis. The Company contributed $3.4 million, $1.9 million, 
and $1.1 million to the 401(k) Plan for the year ended December 31, 2021, 2020 and 2019, respectively.

14. Income Taxes

The Company is subject to U.S. federal and various state corporate income taxes as well as taxes in foreign jurisdictions for the

foreign parent and where foreign subsidiaries have been established. 

Net income (loss) before taxes

For the years ended December 31, 2021, 2020 and 2019, the income (loss) before provision for income taxes consist of the 

following (in thousands):

Domestic
Foreign
Total

Years Ended December 31,
2020

2019

2021

$

$

4,569 $

374,962
379,531 $

$

7,630
(355,686)
(348,056) $

9,155
58,151
67,306

The (provision for) benefit from income taxes consist of the following (in thousands):

Current income taxes:

Federal
State
Foreign

Total current income taxes
Deferred income taxes:

Federal
State
Foreign

Total deferred income taxes
Total income tax (provision) benefit

Years Ended December 31,
2020

2019

2021

$

$

(80) $
(42)
—
(122)

(1,748)
—
—
(1,748)
(1,870) $

(248) $
(151)
(1)
(400)

(409)
—
—
(409)
(809) $

(423)
(59)
0
(482)

34
—
—
34
(448)

F-33

A reconciliation of income tax expense computed at the statutory corporate income tax rate to the effective income tax rate for 

the years ended December 31, 2021, 2020 and 2019 is as follows:

Income tax expense at statutory rate
State income tax, net of federal benefit
Nondeductible expenses
Foreign rate differential
Statutory to US GAAP permanent differences
Stock-based compensation
Impact of deferred rate change
Research credits
Change in valuation allowance
Effective income tax rate

Years Ended December 31,
2020

2019

2021

11.9%
(1.0)%
0.7%
0.6%
0.0%
(2.5)%
0.0%
(4.2)%
(5.0)%
0.5%

11.9%
1.0%
0.1%
(0.1)%
0.0%
2.3%
0.0%
3.3%
(18.7)%
(0.2%)

9.3%
(2.1)%
(0.1)%
2.0%
0.1%
(2.0)%
(12.2)%
(5.2)%
10.9%
0.7%

The federal statutory rate reflects the Switzerland mixed company service rate. 

Deferred taxes are recognized for temporary differences between the basis of assets and liabilities for financial statement and 

income tax purposes. The significant components of the Company’s deferred tax assets are comprised of the following (in thousands): 

Deferred tax assets:

Net operating loss carryforwards
Accruals and reserves
Operating lease liabilities
Other deferred tax assets
Stock-based compensation
Deferred revenue
Research credit

Total deferred tax assets
Less valuation allowance
Net deferred tax assets
Deferred tax liabilities:

Depreciation
Operating lease assets
Intangible assets
Other deferred tax liabilities

Total deferred tax liabilities
Long term deferred taxes

Years Ended December 31,

2021

2020

$

$

47,190 $
5,878
61,476
6,362
14,042
—
37,878
172,826
(98,649)
74,177

(28,579)
(47,521)
(31)
(192)
(76,323)
(2,146) $

84,531
4,785
16,782
1,517
9,605
86
19,526
136,832
(116,640)
20,192

(6,778)
(13,776)
(31)
(4)
(20,589)
(397)

The Company has evaluated the positive and negative evidence bearing upon the realizability of its deferred tax assets. Based on
the Company’s history of worldwide operating losses, the Company has concluded that it is more-likely-than-not that the benefit of its
U.S. and non-U.S. deferred tax assets will not be realized. Accordingly, as of December 31, 2021 and 2020, the Company has 
provided a full valuation allowance against its net deferred tax assets in Switzerland and the United Kingdom. The Company has also
provided a valuation allowance against the U.S. deferred tax assets that cannot be realized by existing deferred tax liabilities based 
upon when they are scheduled to reverse. The valuation allowance decreased by $18.0 million during 2021, which is primarily 
attributable to decreases in net operating loss carryforwards as a result of current year net income. 

As of December 31, 2021, the Company had available U.S. federal net operating loss carryforwards of $3.3 million. The U.S.
federal net operating losses can be carried forward indefinitely. As of December 31, 2021, the Company had available non-U.S. net 
operating loss carryforwards of $772.9 million of which $385.2 million relate to Switzerland, $385.2 million relate to the Canton of 
Zug, and $2.5 million relate to the Company’s wholly-owned subsidiary in the United Kingdom. The net operating losses generated in 
Switzerland and the Canton of Zug begin to expire in 2027 and the net operating losses generated in the United Kingdom can be 
carried forward indefinitely.

F-34

As of December 31, 2021, the Company had U.S. domestic federal research and development credit carryforwards of $19.4
million begin to expire in 2039 for federal purposes, which are net of uncertain tax positions of $9.9 million. As of December 31,
2021, the Company had U.S. domestic federal orphan drug credit carryforwards of $10.6 million which begin to expire in 2040 for 
federal purposes, which are net of uncertain tax positions of $4.5 million. As of December 31, 2021, the Company had U.S. domestic 
state research and development credit carryforwards of $10.0 million which begin to expire in 2035, which are net of uncertain tax 
positions of $7.0 million.

ASC 740 clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statement by 
prescribing the minimum recognition threshold and measurement of a tax position taken or expected to be taken in a tax return. 

As of December 31, 2021, the Company had gross unrecognized tax benefits of $21.4 million of which $19.9 million would 

favorably impact the effective tax rate if recognized. The Company will recognize interest and penalties related to uncertain tax
positions in income tax expense. As of December 31, 2021, 2020 and 2019, the Company had no accrued interest or penalties related 
to uncertain tax positions and no amounts have been recognized in the Company’s consolidated statements of operations and 
comprehensive loss.

The aggregate changes in gross unrecognized tax benefits were as follows (in thousands):

Balance at beginning of year
Increases for tax positions taken during current period
Increases for tax positions taken in prior periods
Decreases for tax positions taken during current period
Decreases for tax positions taken in prior periods
Balance at end of year

Years Ended December 31,
2020

2019

2021

$

$

11,967
9,911
—
—
(483)
21,395

$

$

5,231
7,004
—
—
(268)
11,967

$

$

1,595
2,754
882
—
—
5,231

The Company files income tax returns in the U.S. federal jurisdiction, Massachusetts, California and certain non-U.S. 

jurisdictions. The Company is subject to U.S. federal, Massachusetts, California and non-U.S. income tax examinations by authorities
for tax years ending after December 31, 2017. Research credits generated in prior tax years that are closed for examination may still be
adjusted upon future examination if they have or will be used in a future period. The Company is subject to income tax examinations
by authorities in its non-U.S. jurisdictions for all years.  

15. Related Party Transactions

Casebia

Prior to the termination of the joint venture, Casebia was a related party under ASC 850, Related Party Disclosures (“ASC 

850”). Refer to Note 9, “Agreements with Bayer Healthcare LLC”. 

Vertex

In the fourth quarter of 2018, upon becoming owners of record of more than 10% of the voting interest of the Company, Vertex 
became a related party under ASC 850. As of July 2, 2019, upon becoming owners of record of less than 10% of the voting interest of 
the Company, Vertex was no longer a related party under ASC 850.  Refer to Note 9, “Agreements with Vertex Pharmaceuticals 
Incorporated and certain of its subsidiaries”.

F-35

[THIS PAGE INTENTIONALLY LEFT BLANK]

[THIS PAGE INTENTIONALLY LEFT BLANK]

[THIS PAGE INTENTIONALLY LEFT BLANK]

BOARD OF DIRECTORS

EXECUTIVE COMMITTEE

CORPORATE HEADQUARTERS

Baarerstrasse 14
14
a
6300 Zug
630
Switzerland

US OFFICES

610 Main Street
Cambridge, MA 02139

455 Mission Bay Boulevard Southh
San Francisco, CA 94158

UK OFFICES

85 Tottenham Court Road
London
W1T 4QT

 Ro

Dr. Rodger Novak
Chairman, Founder & President

Dr. Samarth Kulkarni
Chief Executive Officer

ve O

e
Dr. Rodger Novak
Founder & President

Pres

James R. Kasingerer
General Counsel

Dr. Lawrence Klein
Chief Operating Officer

Brendan Smith
Chief Financial Officer

Dr. Samarth Kulkarni
Chief Executive Officer

Dr. Ali Behbahani
General Partner, New Enterprise
Associates

Dr. Bradley Bolzon
Managing Director, Versant Ventures

Dr. H. Edward Fleming, Jr.
Senior Partner, McKinsey and Company

Dr. Simeon J. George
Chief Executive Officer
SR One Capital Management, LP

John T. Greene
Executive Vice President and Chief
Financial Officer, Discover Financial
Services

Dr. Katherine A. High
President, Therapeutics of Asklepios
BioPharmaceutical, Inc.

Dr. Douglas A. Treco
Lead Independent Director

TRANSFER AGENT AND REGISTRAR

INDEPENDENT AUDITORS

LEGAL COUNSEL

American Stock Transfer & Trust 
Company, LLC
6201 15th Avenue
Brooklyn, NY 11219
Phone: +1.800.937.5449
www.amstock.com

ANNUAL GENERAL MEETING

Ernst & Young Ltd.
Basel, Switzerland
Boston, MA

W
Walder Wyss AG
Zurich, Switzerlandland

Wyss

urich

Goodwin Procter, LLP
Boston, MA

n Pr

The Annual General Meeting of Shareholders will be June 9, 2022 at 8:00 A.M. CET at the offices of Walder Wyss Ltd.,
D-19
Seefeldstrasse 123, 8008 Zurich, Switzerland. Due to the ongoing spread of the SARS-CoV-2 virus (coronavirus) and the COVID-19
pandemic in Switzerland and globally, in-person attendance of shareholders at the 2022 Annual General Meeting will not be
possible. Please read the “Important Notice Regarding COVID-19 (Coronavirus) in Switzerland” on page 6 of the Notice ofof
Invitation to 2022 Annual General Meeting of Shareholders.

not b

and 

INVESTOR INFORMATION

Copies of our annual reports on Form 10-K, proxy statements, quarterly reports on Form 10-Q, and current reports on Form 8-K
are available to shareholders upon request without charge. Please visit our website at www.crisprtx.com, send requests by e-mail
to ir@crisprtx.com or send a written request to:

CRISPR Therapeutics, Inc., 610 Main Street, Cambridge, MA 02139, ATTN: Investor Relations

STOCK INFORMATION

Our common shares are traded on the Nasdaq Global Market under the symbol “CRSP”.

FORWARD LOOKING STATEMENTS

This annual report contains “forward-looking statements” which are made pursuant to the safe harbor provisions of the Private
Securities Litigation Reform Act of 1995, as amended. The forward-looking statements in this annual report do not constitute
guarantees of future performance. Investors are cautioned that statements in this annual report that are not strictly historical
statements, including, but not limited to, statements concerning: the status of clinical trials, including the safety, efficacy and
clinical progress of our product candidates; the therapeutic value, development, and commercial potential of CRISPR/Cas-9 gene
editing technologies; the expected benefits of our collaborations and therapies; the potential impacts due to the coronavirus
pandemic; and the intellectual property protection of our technology and therapies. You are cautioned that forward-looking
statements are inherently uncertain. Such forward-looking statements are subject to a number of risks and uncertainties that
could cause actual results to differ materially from those anticipated, including, without limitation, the risks identified in our annual
report on Form 10-K and our other filings with the Securities and Exchange Commission. We assume no obligation to update any
forward-looking information contained in this annual report.

 
CRISPR Therapeutics AG
Baarerstrasse 14
6300 Zug
Switzerland

www.crisprtx.com