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uniQure N.V.

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FY2022 Annual Report · uniQure N.V.
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington D.C. 20549

FORM 10-K

(Mark One)
☒

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

☐

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

For the fiscal year ended December 31, 2022
OR

For the transition period from                to                

Commission file number: 001-36294

uniQure N.V.
(Exact name of Registrant as specified in its charter)

The Netherlands
(Jurisdiction of incorporation or organization)

Paasheuvelweg 25,
1105 BP Amsterdam, The Netherlands
(Address of principal executive offices) (Zip Code)

+31-20-240-6000
 (Registrant’s telephone number, including area code)

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

Title of Each Class

Ordinary shares, par value €0.05 per share

Trading Symbol(s)
QURE   

Name of Each Exchange on Which Registered
The Nasdaq Stock Market LLC (The Nasdaq Global Select Market)

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

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

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

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

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

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

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging
growth  company.  See  the  definitions  of  “large  accelerated  filer”,  “accelerated  filer”,  “smaller  reporting  company”  and  “emerging  growth  company”  in  Rule  12b-2  of  the
Exchange Act.

Large accelerated filer ☒

Accelerated filer ☐

Non-accelerated filer ☐

Smaller reporting company ☐

Emerging growth company ☐

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

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

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

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

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

the correction of an error to previously issued financial statements. ☐

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

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

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

The aggregate market value of the voting and non-voting ordinary shares held by non-affiliates of the registrant as of June 30, 2022 was $870.2 million, based on the

closing price reported as of June 30, 2022 on the Nasdaq Global Select Market.

As of February 23, 2023, the registrant had 46,982,485 ordinary shares, par value €0.05, outstanding.

The documents incorporated by reference are as follows:

Portions of the registrant's definitive Proxy Statement for its 2023 Annual Meeting of Shareholders to be filed with the Securities and Exchange Commission no later
than April 30, 2023 and to be delivered to shareholders in connection with the 2023 Annual Meeting of Shareholders, are herein incorporated by reference in Part III of this
Annual Report on Form 10-K.

    
Table of Contents

TABLE OF CONTENTS

PART I

SPECIAL CAUTIONARY NOTICE REGARDING FORWARD-LOOKING STATEMENTS
Business

Item 1
Item 1A Risk Factors
Item 1B Unresolved Staff Comments
Item 2
Item 3
Item 4 Mine Safety Disclosures

Properties
Legal Proceedings

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

PART II

Equity Securities
Reserved

Item 6
Item 7 Management’s Discussion and Analysis of Financial Condition and Results of Operations
Item 7A Quantitative and Qualitative Disclosures About Market Risk
Item 8
Item 9
Item 9A Controls and Procedures
Item 9B Other Information
Item 9C Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Financial Statements and Supplementary Data
Changes in and Disagreements With Accountants on Accounting and Financial Disclosure

PART III

Item 10 Directors, Executive Officers and Corporate Governance
Item 11
Item 12

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

Item 13 Certain Relationships and Related Transactions, and Director Independence
Item 14

Principal Accounting Fees and Services

Item 15 Exhibits, Financial Statement Schedules
Item 16

Form 10-K Summary

PART IV

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SPECIAL CAUTIONARY NOTICE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K contains “forward-looking statements” as defined under federal securities laws.
Forward-looking statements are based on our current expectations of future events and many of these statements can be
identified using terminology such as “believes,” “expects,” “anticipates,” “plans,” “may,” “will,” “projects,” “continues,”
“estimates,” “potential,” “opportunity” and similar expressions. These forward-looking statements, which include, but are
not limited to, our collaboration and license agreements, our beliefs about our competitive advantage and the capabilities of
our manufacturing facility, our cash runway, the advancement of our clinical trials, our intellectual property portfolio, and
the impact of regulatory actions on our regulatory submission timelines, may be found in Part I, Item 1 “Business,” Part 1,
Item  1A  “Risk  Factors,”  Part  II,  Item  7  “Management’s  Discussion  and  Analysis  of  Financial  Condition  and  Results  of
Operations” and other sections of this Annual Report on Form 10-K.

Forward-looking  statements  are  only  predictions  based  on  management’s  current  views  and  assumptions  and
involve  risks  and  uncertainties,  and  actual  results  could  differ  materially  from  those  projected  or  implied.  The  most
significant factors known to us that could materially adversely affect our business, operations, industry, financial position
or future financial performance include those discussed in Part I, Item 1A “Risk Factors,” as well as those discussed in Part
II, Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and elsewhere in this
Annual Report on Form 10-K, as well as other factors which may be identified from time to time in our other filings with
the  Securities  and  Exchange  Commission  (“SEC”),  or  in  the  documents  where  such  forward-looking  statements  appear.
You should carefully consider that information before you make an investment decision.

You  should  not  place  undue  reliance  on  these  forward-looking  statements,  which  speak  only  as  of  the  date  that
they were made. Our actual results or experience could differ significantly from those anticipated in the forward-looking
statements  and  from  historical  results,  due  to  the  risks  and  uncertainties  described  in  this  Annual  Report  on  Form  10-K
including in Part I, Item 1A. “Risk Factors,” as well as others that we may consider immaterial or do not anticipate at this
time. These cautionary statements should be considered in connection with any written or oral forward-looking statements
that we may make in the future or may file or furnish with the SEC. We do not undertake any obligation to release publicly
any revisions to these forward-looking statements after completion of the filing of this Annual Report on Form 10-K to
reflect later events or circumstances or to reflect the occurrence of unanticipated events. All forward-looking statements
attributable to us are expressly qualified in their entirety by these cautionary statements.

In  addition,  with  respect  to  all  our  forward-looking  statements,  we  claim  the  protection  of  the  safe  harbor  for

forward-looking statements contained in the Private Securities Litigation Reform Act of 1995.

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Summary Risk Factors

The following is a summary of the principal risks associated with an investment in our ordinary shares:

● We have encountered, and may continue to encounter, delays in, and impediments to the progress of our clinical

trials or fail to demonstrate the safety and efficacy of our product candidates.

● We  may  not  be  successful  in  our  efforts  to  use  our  gene  therapy  technology  platform  to  build  a  pipeline  of
additional  product  candidates,  and  we  may  not  be  successful  in  our  efforts  to  create  innovative  programs,
platform technologies or other technologies to be competitive with others.

● We may not be successful in our efforts to in-license or acquire product candidates that align with our research
and development strategy, and any such transactions may not achieve the expected cash flows or could result in
additional costs and challenges.

● Our manufacturing facility is subject to significant government regulations and approvals. If we fail to comply

with these regulations or to maintain these approvals our business could be materially harmed.

● We  are  exposed  to  a  number  of  external  factors  such  as  competition,  insurance  coverage  of  and  pricing  and
reimbursement for our product candidates that may adversely affect our product revenue and that may cause our
business  to  suffer.  We  also  have  experienced  and  could  continue  to  experience  increased  competition  for  and
compensation  expenses  associated  with  employee  recruiting  and  employee  retention,  which  could  adversely
affect our business.

● We rely, and expect to continue to rely, on third parties to conduct, supervise, and monitor our preclinical studies
and clinical trials, and those third parties may not perform satisfactorily, including failing to meet deadlines for
the completion of such trials or failing to comply with regulatory requirements.

● We rely on licenses of intellectual property from third parties, and such licenses may not provide adequate rights
or may not be available in the future on commercially reasonable terms or at all, and our licensors may be unable
to obtain and maintain patent protection for the technology or products that we license from them.

● If we are unable to obtain and maintain patent protection for our technology and products, or if the scope of the
patent  protection  is  not  sufficiently  broad,  our  ability  to  successfully  commercialize  our  products  may  be
impaired.

● Our  reliance  on  third  parties  may  require  us  to  share  our  trade  secrets  and  other  proprietary  technology,  which
could increase the possibility that a competitor will discover them or that our trade secrets and other proprietary
technology will be misappropriated or disclosed.

● We will likely need to raise additional funding, which may not be available on acceptable terms, or at all. Failure
to obtain capital when needed may force us to delay, limit or terminate our product development efforts or other
operations which could have a material adverse effect on our business, financial condition, results of operations,
and  cash  flows.  The  amount  of  capital  we  will  be  required  to  raise  will  depend  in  part  on  a  $75.0  million
milestone payment that CSL Behring would owe on occurrence of a first sale of HEMGENIXÔ in the European
Union prior to July 2, 2023, as well as the royalties we will receive from sales of HEMGENIXÔ.

● Our relationships with employees, customers, and third-parties is subject to applicable laws and regulations, the
non-compliance of any of which could have a material adverse effect on our business, financial condition, and
results of operations.

● We  are  subject  to  laws  governing  data  protection  in  the  different  jurisdictions  in  which  we  operate.  The
implementation  of  such  data  protection  regimes  is  complex,  and  should  we  fail  to  fully  comply,  we  may  be
subject to penalties that may have an adverse effect on our business, 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  or  other  errors  or  disruptions,  which  could  result  in  a  material  disruption  of  our  product
development programs, such as potential issues with data integrity or loss of data.

● If we fail to maintain an effective system of internal controls, we may be unable to accurately report our results of
operations or prevent fraud or fail to meet our reporting obligations, and investor confidence and the market price
of our ordinary shares may be materially and adversely affected.

● Our business, operations and supply chain have been, and may continue to be, materially and adversely affected

by the ongoing Covid pandemic.

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Unless the context requires otherwise, references in this report to “uniQure,” “Company,” “we,” “us” and “our”

and similar designations refer to uniQure N.V. and our subsidiaries.

Part I

Item 1.  Business.

Overview

We  are  a  leader  in  the  field  of  gene  therapy  and  seek  to  deliver  to  patients  suffering  from  rare  and  other
devastating  diseases  single  treatments  with  potentially  curative  results.  We  are  advancing  a  pipeline  of  innovative  gene
therapies,  including  our  clinical  candidate  for  the  treatment  of  Huntington’s  disease  and  amyotrophic  lateral  sclerosis
(“ALS”)  as  well  as  preclinical  product  candidates,  including  candidates  for  the  treatment  of  refractory  temporal  lobe
epilepsy  (“rTLE”) and Fabry disease. In November 2022 and February 2023, our internally-developed HEMGENIXÔ, a
gene therapy for the treatment of hemophilia B, was approved for commercialization by the United States Food and Drug
Administration (“FDA”) and the European Medicines Agency (“EMA”), respectively. In June 2020, we agreed to license
HEMGENIXÔ  to  CSL  Behring  LLC  (“CSL  Behring”),  which  is  now  responsible  for  the  commercialization  of
HEMGENIXÔ. We are manufacturing HEMGENIXÔ for CSL Behring and are entitled to specific milestone payments and
royalties  on  net  sales.  We  believe  our  validated  technology  platform  and  manufacturing  capabilities  provide  us  distinct
competitive  advantages,  including  the  potential  to  reduce  development  risk,  cost,  and  time  to  market.  We  produce  our
Adeno-associated virus (“AAV”) -based gene therapies in our own facilities with a proprietary, commercial-scale, current
good  manufacturing  practices  (“cGMP”)-compliant,  manufacturing  process.  We  believe  our  Lexington,  Massachusetts-
based facility is one of the world’s most versatile gene therapy manufacturing facilities.

Key events

CSL Behring collaboration

On  June  24,  2020  (the  “Signing  Date”),  uniQure  biopharma  B.V.,  a  wholly  owned  subsidiary  of  uniQure  N.V.,
entered into a commercialization and license agreement (the “CSL Behring Agreement”) with CSL Behring, pursuant to
which  CSL  Behring  received  exclusive  global  rights  to  etranacogene  dezaparvovec  (the  “Product”).  The  transaction
became fully effective in May 2021 (the “Closing”).

In  March  and  April  2022,  CSL  Behring  submitted  marketing  applications  for  the  Product  in  the  United  States
(“U.S.”) and European Union (“EU”). In March and April 2022, we received the $55.0 million owed to us by CSL Behring
related to the submission of these marketing applications.

In  November  2022,  the  FDA  approved  the  marketing  application  for  the  U.S.,  and  in  February  2023  the  EMA
approved  the  marketing  application  for  the  EU.  We  are  eligible  to  receive  a  $100.0  million  payment  from  CSL  Behring
following  the  first  sale  of  the  Product  in  the  U.S.  We  are  also  eligible  to  receive  a  $75.0  million  payment  from  CSL
Behring following the first sale of the Product in any of five major European countries, namely France, Germany, Italy,
Spain,  and  the  United  Kingdom,  provided  the  first  sale  occurs  prior  to  July  2,  2023.  We  recorded  the  $100.0  million
milestone payment we are eligible to receive from CSL Behring associated with the first sale in the U.S. as license revenue
in the year ended December 31, 2022, as we expect this event to occur in 2023. We did not record license revenue related
to a $75.0 million payment in the year ended December 31, 2022, as the accomplishment of this milestone prior to July 2,
2023 is contingent on factors outside our control.

We are eligible to receive up to $1.3 billion in additional commercial milestones, and tiered double-digit royalties

of up to a low-twenties percentage of net product sales arising from the Product.

Huntington’s disease program (AMT-130)

AMT-130 is our novel gene therapy candidate for the treatment of Huntington’s disease.

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We are currently conducting a randomized, controlled and blinded Phase I/II clinical trial for AMT-130 in the U.S.
The lower-dose cohort of this trial includes 10 patients, of which six patients received treatment with AMT-130 and four
patients received imitation surgery. The higher-dose cohort includes 16 patients, of which 10 patients received treatment
with  AMT-130  and  six  patients  received  imitation  surgery.  Patients  receiving  imitation  surgery  have  the  option  to  cross
over  after  12  months  if  they  meet  the  inclusion  criteria  for  the  study.  We  are  also  conducting  an  open-label  Phase  Ib/II
study in the EU, which includes six patients in the lower-dose cohort and nine patients in the higher-dose cohort. All 15
patients in the EU study will receive AMT-130.

On March 21, 2022, we announced that we completed the enrollment of all 26 patients in the first two cohorts of
our  Phase  I/II  clinical  trial  of  AMT-130  in  the  U.S.  In  July  2022,  we  began  crossing  over  patients  who  received  the
imitation surgical procedure.

On June 23, 2022, we announced safety and biomarker data from the 10 patients enrolled in the low-dose cohort.

At 12 months of follow-up on the patients in the low-dose cohort:

● AMT-130 was generally well-tolerated with no serious adverse events related to AMT-130 reported in
the treated patients. There were two serious adverse events unrelated to AMT-130, including a deep-vein
thrombosis in the elbow of one patient that was resolved with anticoagulants and transient post-operative
delirium in the second patient that was resolved through supportive care.

● In the four treated patients with evaluable data, mean levels of mutant Huntingtin protein in the cerebral
spinal fluid (“CSF mHTT”) declined at all timepoints compared to baseline, and decreased by 53.8% at
12 months of follow-up (range from 44% decrease to 71% decrease). In the three control patients with
evaluable data, mean levels of CSF mHTT showed an increase compared to baseline at one, three, six
and nine months of follow-up, and decreased by 16.8% compared at 12 months of follow-up (range 35%
increase to 47% decrease).

● In the six treated patients, measurements of neurofilament light chain in the cerebral spinal fluid (“CSF
NfL”), a biomarker of neuronal damage, initially increased as expected following the AMT-130 surgical
procedure and declined thereafter, nearing baseline at 12 months of follow-up. At 12 months, mean CSF
NfL showed an 8% increase compared to baseline (range 46% increase to 14% decrease). Two of the six
treated patients were at or below baseline at 12 months of follow-up, with an additional patient below
baseline at 15 and 18 months of follow-up. In the four control patients, mean CSF NfL remained stable
or slightly declined over 12 months (range 1% increase to 35% decrease).

Also on June 23, 2022, we announced that 10 patients in our Phase Ib/II study in the EU had been treated with

AMT-130.

In August 2022, we announced a voluntary postponement of AMT-130 higher-dose procedures due to suspected
unexpected severe adverse reactions (“SUSARs”) reported in three of the 14 patients that were treated with the higher dose
of AMT-130. In October 2022, after completing a comprehensive safety investigation, the Data Safety Monitoring Board
(“DSMB”) recommended resuming treatment at the higher dose of AMT-130 for the remaining five European patients and
any patients in the U.S. trial eligible to cross over from the control arm to the treatment. All three patients have experienced
full resolution of the reported SUSARs.

Preclinical programs

In  May  2022,  we  presented  certain  preclinical  findings  on  our  gene  therapy  candidates  for  refractory  temporal
lobe epilepsy, Fabry disease, Parkinson’s disease, Amyotrophic lateral sclerosis, and Alzheimer’s disease at the American
Society of Gene and Cell Therapy Hybrid Congress.

In July and August 2022, respectively, we initiated Investigational New Drug-enabling (“IND-enabling”), Good
Laboratory Practice (“GLP”) toxicology studies in non-human primates for our gene therapy candidates in rTLE and Fabry
disease.

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In  November  2022,  we  hosted  a  virtual  investor  event  focused  on  the  target  candidate  for  the  treatment  of
temporal lobe epilepsy (“AMT-260”). The presentation highlighted preclinical data on AMT-260 and our initial plans for
clinical development, as well as our miQURE™ and linQURE™ technology platforms that utilize micro ribonucleic acids
(“miRNAs”) to reduce the expression of abhorrent genes. We also highlighted our progress in developing a commercial-
scale AAV manufacturing platform.

Termination of Bristol-Myers Squibb Agreement

We entered into a collaboration and license agreement with Bristol-Myers Squibb (“BMS”) in May 2015 (“BMS
CLA”).  BMS  had  initially  designated  four  Collaboration  Targets  in  2015.  The  initial  four-year  research  term  under  the
collaboration terminated on May 21, 2019.

On December 1, 2020, we and BMS amended the BMS CLA (the “Amended BMS CLA”). The Amended BMS

CLA did not extend the initial research term, and BMS did not replace any of the active Collaboration Targets.

On  November  21,  2022,  we  received  written  notice  that  BMS  was  terminating  the  BMS  CLA  as  amended
(“Termination Notice”), effective on February 21, 2023 (“Termination Date”). As a result of the termination of the BMS
CLA, the contractually defined payment set for in the Amended BMS CLA that would have required us to make a payment
to BMS in the event of a change of control transaction is of no further force or effect.

The  Investor  Agreement  dated  April  2015  between  the  Company  and  BMS  remains  in  force  according  to  its

terms, but various provisions of the Investor Agreement have been terminated.  

Amyotrophic Lateral Sclerosis (AMT-162)

On  January  31,  2023,  we  announced  that  we  have  entered  into  a  global  licensing  agreement  for  a  one-time,
intrathecally  administered  gene  therapy  for  ALS  with  Apic  Bio.  With  this  agreement,  we  have  added  to  our  pipeline  of
gene therapies to treat neurological disorders. We made an initial cash payment of $10.0 million. In addition, we will pay
Apic  Bio  up  to  $43.0  million  in  milestones  upon  achievement  of  regulatory  approvals  in  the  U.S.  and  Europe  and  pre-
specified annual net sales, and a tiered royalty on net sales ranging from the mid-single digits to low double digits.

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Our Mission and Strategy

Our mission is to deliver curative, one-time administered genomic medicines that transform the lives of patients.
We  aim  to  build  an  industry-leading,  fully  integrated,  and  global  company  that  leverages  its  technology  and  proprietary
manufacturing platform to deliver these medicines to patients with serious unmet medical needs.

Our strategy to achieve this mission is to:

Advance  the  development  of  AMT-130,  a  potential  one-time  gene-therapy  approach  for  the  treatment  of
Huntington’s  disease.  AMT-130  is  the  first  AAV-based  gene  therapy  to  enter  clinical  development  for  Huntington’s
disease. It consists of an AAV5 vector carrying an artificial miRNA specifically tailored to silence the huntingtin gene and
leverages our proprietary miQURE™ silencing technology. The therapeutic goal of AMT-130 is to inhibit the production
of  the  mutant  HTT  protein.  In  June  2022,  we  announced  initial  data  from  patients  in  the  lower-dose  cohort  of  the  U.S.
Phase I/II study. Patient enrollment is ongoing in the U.S. Phase I/II study as well as an EU Phase Ib/II study.

Support the commercialization and global expansion of HEMGENIXÔ . HEMGENIXÔ is an FDA and EMA
approved one-time administered gene therapy for the treatment of patients with severe and moderately severe hemophilia
B. In 2020 we licensed the commercial rights to HEMGENIXÔ to CSL Behring. We will be supplying CSL Behring with
HEMGENIXÔ  for a number of years. We are eligible to receive up to $1.3 billion in additional commercial milestones,
and tiered double-digit royalties of up to a low-twenties percentage of net product sales arising from HEMGENIXÔ.

Advance our pipeline of other preclinical and clinical-stage gene therapy candidates into first-in-human trials.
We  expect  to  advance  additional  one-time  administered  gene  therapy  product  candidates  into  clinical  studies,  including
AMT-260 for the treatment of rTLE, AMT-162 for the treatment of superoxide dismutase 1 (“SOD1”)-ALS, and AMT-191
for  the  treatment  of  Fabry  disease.  AMT-260  and  AMT-162  utilize  an  AAV9  vector  to  deliver  customized  miRNAs  to
suppress  the  expression  of  the  glutamate  inotropic  receptor  kainate  type  subunit  2  (“GRIK2”)  and  SOD1  genes,
respectively. AMT-191 is an AAV5 gene therapy incorporating the α-galactosidase A (“GLA”) transgene.

Initiate  additional  gene  therapy  programs  leveraging  validated  technologies  and  focused  on  central-nervous
system (“CNS”) and other debilitating disorders. We are leveraging proven enabling technologies, including AAV vectors,
promoters,  and  manufacturing  capabilities,  to  develop  gene  therapies  that  have  the  potential  to  be  best  or  first-in-class.
Many of our gene therapy product candidates incorporate AAV5 or AAV9 vectors, which are currently being utilized in
commercially available, approved gene therapies, as well as extensively studied in the clinical setting. We believe AAV5
may potentially offer a favorable immunogenicity profile and the ability to confer therapeutic effect in patients with pre-
existing  antibodies.  We  have  also  developed  substantial  know-how  around  optimizing  delivery  of  gene  therapies  to  the
central nervous system and the liver, which can be leveraged across multiple product candidates.

Maintain  our  leadership  position  in  commercial-scale  AAV  manufacturing.  We  have  established  cGMP,
commercial-scale  manufacturing  capabilities  for  AAV-based  gene  therapies  in  our  commercially-licensed  Lexington,
Massachusetts  facility  and  completed  construction  of  a  second  cGMP  manufacturing  facility  in  Amsterdam,  the
Netherlands  that  complements  our  work  in  Lexington.  We  believe  our  manufacturing  platform  enables  us  to  rapidly
produce new products for clinical investigation, minimize time between clinical phases and complete scale-up as product
candidates advance into late-stage development and commercialization.

Invest  in  next-generation  technologies  with  the  goal  of  enhancing  safety,  improving  efficacy,  and  expanding
the applicability of gene therapy to patients. We are developing technologies that have the potential to augment the safety
and efficacy of our product candidates and broaden the applicability of our gene therapies to a wider range of diseases and
patients. These technologies include next-generation delivery approaches, such as smart AAV capsids potentially capable
of improved CNS transduction and crossing the blood-brain barrier, as well as novel cargo technologies such as miQURE,
our  one-time  administered  gene  silencing  platform.  We  are  expanding  our  cargo  platforms  to  include  additional
technologies,  such  as  linkQURE  to  combine  multiple  miRNAs  to  suppress  different  genes,  goQURE  for  simultaneous
silencing of a disease gene and replacement with a healthy gene, and abQURE for the delivery of therapeutic antibodies.
We  are  also  developing  novel  administration  approaches,  such  as  QUREDose,  to  enable  dosing  through  neutralizing
antibodies  and  re-dosing.  These  various  technologies  are  developed  both  in-house  by  our  experienced  research  team  in
Amsterdam, the Netherlands, as well as via collaborations with third parties.

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Continue  to  expand  our  intellectual  property  portfolio.  We  have  established  what  we  believe  is  a  leading
intellectual property portfolio covering various aspects of our technology and programs, including (i) elements of our gene
therapy  constructs,  such  as  AAV  vectors,  promoters  and  transgenes;  (ii)  innovative  delivery  technologies,  such  as  re-
administration  of  AAV  gene  therapy;  and  (iii)  proprietary  manufacturing  processes  covering  key  components  of  our
upstream and downstream capabilities. We expect to continue to expand our intellectual property portfolio by aggressively
seeking patent protection for promising aspects of our technology platform and product candidates.

Our Product Candidates

A summary of our key development programs is provided below:

Liver-directed diseases

Hemophilia B (HEMGENIX™ or etranacogene dezaparvovec)

Hemophilia B Disease and Market Background

Hemophilia  B  is  a  rare,  lifelong  bleeding  disorder  caused  by  a  single  gene  defect,  resulting  in  insufficient
production of factor IX, a protein primarily produced by the liver that helps blood clots form. Treatments for moderate to
severe hemophilia B include prophylactic infusions of factor IX replacement therapy to temporarily replace or supplement
low levels of blood-clotting factor and, while these therapies are effective, those with hemophilia B must adhere to strict,
lifelong infusion schedules. They may also still experience spontaneous bleeding episodes as well as limited mobility, joint
damage  or  severe  pain  as  a  result  of  the  disease.  For  appropriate  patients,  HEMGENIX™  allows  people  living  with
hemophilia B to produce their own factor IX, which can lower the risk of bleeding.

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CSL Behring collaboration

On  June  24,  2020,  we  entered  into  the  CSL  Behring  Agreement  pursuant  to  which  CSL  Behring  received
exclusive  global  rights  to  HEMGENIX™.  The  transaction  became  fully  effective  on  May  6,  2021,  one  day  after  the
waiting period under the HSR Act expired on May 5, 2021.

Unless earlier terminated as described below, the CSL Behring Agreement will continue on a country-by-country
basis until expiration of the royalty term in a country. The royalty term expires in a country on the later of (a) 15 years after
the  first  commercial  sale  of  the  Product  in  such  country,  (b)  expiration  of  regulatory  exclusivity  for  the  Product  in  such
country and (c) expiration of all valid claims of specific licensed patents covering the Product in such country. Either we or
CSL Behring may terminate the CSL Behring Agreement for the other party’s material breach if such breach is not cured
within a specified cure period. In addition, if CSL Behring fails to commercialize the Product in any of a group of major
countries  for  an  extended  period  of  time  following  the  first  regulatory  approval  of  the  Product  in  any  of  such  group  of
countries (other than due to certain specified reasons) and such failure has not been cured within a specified cure period,
then  we  may  terminate  the  CSL  Behring  Agreement.  CSL  Behring  may  also  terminate  the  CSL  Behring  Agreement  for
convenience.

In  March  and  April  2022,  we  received  the  total  $55.0  million  owed  to  us  by  CSL  Behring  related  to  CSL

Behring’s submissions of marketing applications for HEMGENIX™ in the EU in March 2022 and the U.S. in April 2022.

In  November  2022  the  FDA  approved  the  marketing  application  for  the  U.S.  and  in  February  2023  the  EMA
approved  the  marketing  application  for  the  EU.  We  are  eligible  to  receive  a  $100.0  million  payment  from  CSL  Behring
following  the  first  sale  of  the  Product  in  the  U.S.  We  are  also  eligible  to  receive  a  $75.0  million  payment  from  CSL
Behring following the first sale of the Product in any of five major European countries, namely France, Germany, Italy,
Spain,  and  the  United  Kingdom,  provided  the  first  sale  occurs  prior  to  July  2,  2023.  We  recorded  the  $100.0  million
payment associated with the first sale in the U.S. as license revenue in the year ended December 31, 2022 as we expect this
event to occur in 2023. We did not record license revenue related to a $75.0 million payment in the year ended December
31, 2022, as the accomplishment of this milestone prior to July 2, 2023 is contingent on factors outside our control.

We  and  CSL  Behring  also  entered  into  a  development  and  commercial  supply  agreement,  pursuant  to  which,
among other things, we will supply the Product to CSL Behring. We are contractually obligated to supply the Product until
such time that these capabilities are transferred to CSL Behring or its designated contract manufacturing organization. On
September 6, 2022, CSL Behring notified us of its intent to transfer manufacturing technology in the coming years related
to HEMGENIX™ to a third-party contract manufacturer designated by CSL Behring. CSL Behring also informed us of its
intent to retain us as a source for manufacturing after the completion of the technology transfer.

Development of HEMGENIX™ (etranacogene dezaparvovec) for Hemophilia B

HEMGENIX™  is  approved  for  adults  18  years  or  older  with  hemophilia  B  who  currently  use  factor  IX
prophylaxis  therapy  or  have  current  or  historical  life-threatening  hemorrhage  or  have  repeated,  serious  spontaneous
bleeding  episodes.  HEMGENIX™  includes  an  AAV5  vector  incorporating  the  FIX-Padua  variant  (“FIX-Padua”).  The
product  is  intended  to  be  delivered  by  intravenous  (“IV”)-infusion,  without  immunosuppressant  therapy,  through  the
peripheral vein in a single treatment session for approximately 30 minutes.

The  approvals  were  based  in  part  on  data  from  our  Phase  III  HOPE-B  pivotal  trial  to  evaluate  the  safety  and
efficacy of HEMGENIX™. In the open-label, single arm, HOPE-B study, 54 adult male hemophilia B patients with severe
or moderately severe hemophilia B, with or without pre-existing AAV5 neutralizing antibodies, were infused with a single
dose of HEMGENIX™. HEMGENIX™ produced mean factor IX activity of 39.0 IU/dL at six months and 36.9 IU/dL at
18 months post infusion, which was sustained at 36.7 IU/dL in the long-term follow-up data at two years. In addition, 94
percent  (51  out  of  54)  of  patients  treated  with  HEMGENIX™  discontinued  use  of  prophylaxis  and  remained  free  of
previous continuous routine prophylaxis therapy.

The data demonstrate the annualized bleeding rate (“ABR”) for all bleeds was reduced by 64% during months 7-
24 of the study (mean ABR 1.51 vs. 4.18 during the lead-in period; p=0.0002), sustaining the same bleed reduction that
satisfied the study's primary endpoint. The FDA-approved prescribing information for HEMGENIX™ shows that ABR for
all  bleeds  was  reduced  by  54%  during  months  7-18  of  the  study.  Treatment  with  HEMGENIX™  also  reduced  mean
unadjusted annualized factor IX consumption by 96% from the lead-in period (257,339 IU/year/participant) to months 19–
24 (9751 IU/year/participant; p<0.0001).

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Of the 557 treatment-emergent adverse events reported 24-months post-infusion, 424 (76%) were mild, 115 (21%)
were  moderate  and  18  (3%)  were  severe.  A  total  of  38  participants  (70.4%)  experienced  93  treatment-related  adverse
events, with only one occurring during months 18-24. There were no serious adverse effects related to treatment and the
most  common  side  effects  (incidence  ≥5%)  were  liver  enzyme  elevations,  headache,  elevated  levels  of  a  certain  blood
enzyme, flu-like symptoms, infusion-related reactions, fatigue, nausea and feeling unwell.

Intellectual Property for etranacogene dezaparvovec

In 2017, we acquired intellectual property from Professor Paolo Simioni (“Dr. Simioni”), a hemophilia expert at
the University of Padua, Italy. The intellectual property includes U.S. Patent Number 9,249,405, (the “‘405 Patent”). The
‘405 Patent was subject to Inter Partes Review (“IPR”) proceedings at the Patent Trials and Appeal Board (“PTAB”) of the
United States Patent & Trademark Office (“USPTO”). Ultimately, the challenged claims of the ‘405 Patent were withdrawn
but the unchanged claims remain in force. The ‘405 Patent thus covers compositions of FIX-Padua polypeptides (proteins),
their  therapeutic  uses  as  well  as  nucleic  acid  sequences  encoding  FIX-Padua.  The  FIX  Padua  variant  is  a  FIX  protein
carrying a leucine at the R338 position, often called the “FIX-Padua” or “Padua mutant.”

On May 29, 2018, the USPTO granted us a second patent, U.S. Patent Number 9,982,248, which covers methods
of treating coagulopathies (bleeding disorders), including hemophilia B, using AAV-based gene therapy with nucleic acid
encoding the hyperactive FIX Padua variant. 

On November 5, 2019, the USPTO granted us a third patent, U.S. Patent Number 10,465,180, which covers any
AAV  comprising  a  nucleic  acid  encoding  a  FIX-Padua  protein,  and  promoter  sequences,  transcription  termination  and
control elements. The claims also cover FIX-Padua variants with at least 70% sequence identity to FIX-R338L.

In addition to the U.S. patents, on February 20, 2018, the Canadian Intellectual Property Office granted Patent
Number 2,737,094, which covers FIX-Padua nucleic acids for use in gene therapy and FIX-Padua polypeptides for use in
FIX replacement therapy.

On October 14, 2022, Pfizer filed a Statement of Claim at the Federal Court in Canada to impeach our Canadian

Patent CA 2,737,094. We are currently defending this case.

On  December  28,  2022,  the  European  Patent  Office  granted  Patent  Number  EP  3581650,  which  covers  FIX-
Padua nucleic acids and its uses in gene therapy. That same day, Pfizer filed a Claim at the UK High Court, Patent Court
seeking revocation of the UK part of EP 3581650. We are currently defending this case.

Both in the U.S. and in Europe, we have pending divisional applications still in prosecution phases.

On May 11, 2021, Pfizer, Inc. filed three petitions at the USPTO seeking Inter Partes Review of U.S. Patent Nos.
9,982,248  (the  “‘248  Patent”)  and  10,465,180  (the  “‘180  Patent”  and  together  with  the  ‘248  Patent,  the  “Patents”).  On
November 15, 2022, the PTAB issued three Final Written Decisions (“FWD”) finding the claims of the challenged patents
invalid.  On  January  17,  2023,  Notices  of  Appeal  were  filed  at  the  Court  of  Appeal  of  the  Federal  Circuit  (“CAFC”)
contesting these FWDs.

Fabry disease program (AMT-191)

Fabry Disease and Market Background

Fabry  disease  is  a  progressive,  inherited,  multisystemic  lysosomal  storage  disease  characterized  by  specific
neurological,  cutaneous,  renal,  cardiovascular,  cochleo-vestibular,  and  cerebrovascular  manifestations.  Fabry  disease  is
caused by a defect in a gene that encodes for a protein called α-galactosidase A (“GLA”). The GLA protein is an essential
enzyme  required  to  breakdown  globotriaosylsphingosine  (“Gb3”)  and  lyso-globotriaosylsphingosine  (“lyso-Gb3”).  In
patients living with Fabry disease, Gb3 and lyso-Gb3 accumulate in various cells throughout the body causing progressive
clinical  signs  and  symptoms  of  the  disease.  Current  treatment  options,  which  consist  of  bi-weekly  intravenous  enzyme
replacement therapy, typically have no therapeutic benefit in patients with advanced renal or cardiac disease. Studies have
also shown that a majority of male patients develop antibodies that inhibit the GLA protein and interfere with therapeutic
efficacy.

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Fabry disease has two major disease phenotypes: the type 1 “classic” and type 2 “later-onset” subtypes. Both lead
to  renal  failure,  and/or  cardiac  disease,  and  early  death.  Type  1  males  have  little  or  no  functional  a-Gal  A  enzymatic
activity  (<1%  of  normal  mean)  and  marked  accumulation  of  GL-3/Gb3  and  related  glycolipids  in  capillaries  and  small
blood  vessels  which  cause  the  major  symptoms  in  childhood  or  adolescence.  In  contrast,  males  with  the  type  2  “later-
onset” phenotype (previously called cardiac or renal variants) have residual a-Gal A activity, lack GL-3/Gb3 accumulation
in capillaries and small blood vessels, and do not manifest the early manifestations of type 1 males. They experience an
essentially  normal  childhood  and  adolescence.  They  typically  present  with  renal  and/or  cardiac  disease  in  the  third  to
seventh decades of life. Most type 2 later-onset patients have been identified by enzyme screening of patients in cardiac,
hemodialysis, renal transplant, and stroke clinics and recently by newborn screening. Fabry disease occurs in all racial and
ethnic populations and affects males and females. It is estimated that type 1 classic Fabry disease affects approximately one
in 40,000 males and approximately one in 20,000 females. The type 2 later-onset phenotype is more frequent, and in some
populations may occur as frequently as about 1 in 1,500 to 4,000 males.

Our Development of AMT-191 for Fabry Disease

In September 2020, we selected a lead gene therapy candidate (AMT-191) for the treatment of Fabry disease. The
lead  candidate  is  a  one-time  administered  AAV5  gene  therapy  incorporating  the  GLA  transgene.  In  preclinical  studies
comparing  multiple  product  candidates,  including  constructs  incorporating  a  modified  alpha-N-acetylgalactosaminidase
transgene (“modNAGA”), AMT-191 demonstrated the most robust and sustained increases in GLA activity and subsequent
functional improvement.

In October 2021, we presented preclinical data for AMT-191 at the European Society of Gene and Cell Therapy
(“ESGCT”), confirming efficiency and cross correction in a Fabry mouse model, with increased gamma-linolenic acid in
the liver, kidney, heart, and brain and normalized lysoglobotriaosylceramide-3 levels in main target organs.

In  August  2022,  we  initiated  IND-enabling,  GLP  toxicology  studies  in  non-human  primates  for  our  lead

candidate.

Central Nervous System diseases

Huntington’s Disease

Huntington’s Disease and Market Background

Huntington’s  disease  is  a  severe  genetic  neurodegenerative  disorder  causing  loss  of  muscle  coordination,
behavioral abnormalities, and cognitive decline, often resulting in complete physical and mental deterioration over a 12 to
15-year  period.  The  median  survival  time  after  onset  is  15  to  18  years  (range:  5  to  >25  years).  Huntington’s  disease  is
caused  by  an  inherited  defect  in  a  single  gene  that  codes  for  a  protein  called  Huntingtin  (“HTT”).  The  prevalence  of
Huntington’s disease is three to seven per 100,000 in the general population, similar in men and women, and it is therefore
considered a rare disease. Despite the ability to identify Huntington’s disease mutation carriers decades before onset, there
is  currently  no  available  therapy  that  can  delay  onset  or  slow  progression  of  the  disease.  Although  some  symptomatic
treatments are available, they only are transiently effective despite significant side effects.

Our Development of AMT-130 for Huntington’s Disease

AMT-130  is  our  novel  gene  therapy  candidate  for  the  treatment  of  Huntington’s  disease.  AMT-130  utilizes  our
proprietary, gene-silencing miQURE platform and incorporates an AAV vector carrying a miRNA specifically designed to
silence the huntingtin gene and the potentially highly toxic exon 1 protein fragment. We are currently conducting a Phase
I/II  clinical  trial  for  AMT-130  in  the  U.S.  and  a  Phase  Ib/II  study  in  the  EU.  Together,  these  studies  are  intended  to
establish safety, proof of concept, and the optimal dose of AMT-130 to take forward into Phase III development or into a
confirmatory study should an accelerated registration pathway be feasible. AMT-130 has received Orphan Drug and Fast
Track designations from the FDA and Orphan Medicinal Product Designation from the EMA.

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Our goal for AMT-130 is to develop a gene therapy with the following profile:

(1) one-time  administration  of  disease-modifying  therapy  into  the  striatum,  the  area  of  the  brain  where

Huntington’s disease is known to manifest;

(2) biodistribution of the therapy in both the deep and cortical structures of the brain via transport of the AAV

vector and through secondary exosome-mediated delivery; and

(3) safe, on-target and durable knockdown of HTT and exon 1 HTT.

On March 21, 2022, we announced that we completed the enrollment of all 26 patients in the first two cohorts of
our  randomized,  double-blinded,  Phase  I/II  clinical  trial  of  AMT-130  taking  place  in  the  U.S.  In  the  study,  patients  are
randomized to either treatment with AMT-130 or to an imitation surgical procedure. The treated patients have received a
single administration of AMT-130 using MRI-guided, convection-enhanced stereotactic neurosurgical delivery directly into
the  striatum  (caudate  and  putamen).  The  trial  consists  of  a  blinded  12-month  period  followed  by  unblinded  long-term
follow-up for five years. The lower-dose cohort includes 10 patients, of which six patients received treatment with AMT-
130 and four patients received imitation surgery between June 19, 2020 and April 5, 2021. The higher-dose cohort includes
16  patients,  of  which  10  patients  received  treatment  with  AMT-130  and  six  patients  received  imitation  surgery  between
June 13, 2021 and March 21, 2022. In July 2022, we initiated dosing in patients crossing over from the imitation surgical
procedure arm to treatment. A third cohort, which will include up to 18 additional randomized patients receiving the higher
dose,  is  intended  to  explore  the  use  of  alternative  stereotactic  navigation  systems  to  simplify  placement  of  catheters  for
infusions of AMT-130.

On  June  23,  2022,  we  announced  safety  and  biomarker  data  from  the  10  patients  enrolled  in  the  lower-dose

cohort. At 12 months of follow-up on the patients in the lower-dose cohort:

● AMT-130 was generally well-tolerated with no serious adverse events related to AMT-130 reported in
the treated patients. There were two serious adverse events unrelated to AMT-130, including a deep-vein
thrombosis in the elbow of one patient that was resolved with anticoagulants and transient post-operative
delirium in the second patient that was resolved through supportive care.

● In  the  four  treated  patients  with  evaluable  data,  mean  levels  of  CSF  mHTT  declined  at  all  timepoints
compared to baseline and decreased by 53.8% at 12 months of follow-up (range 44% decrease to 71%
decrease).  In  the  three  control  patients  with  evaluable  data,  mean  levels  of  CSF  mHTT  showed  an
increase compared to baseline at one, three, six and nine months of follow-up, and decreased by 16.8%
compared at 12 months of follow-up (range 35% increase to 47% decrease).

● In  the  six  treated  patients,  measurements  of  CSF  NfL,  a  biomarker  of  neuronal  damage,  initially
increased  as  expected  following  the  AMT-130  surgical  procedure  and  declined  thereafter,  nearing
baseline at 12 months of follow-up. At 12 months, mean CSF NfL showed an 8% increase compared to
baseline (range 46% increase to 14% decrease). Two of the six treated patients were at or below baseline
at 12 months of follow-up, with an additional patient below baseline at 15 and 18 months of follow-up.
In the four control patients, mean CSF NfL remained stable or slightly declined over 12 months (range
1% increase to 35% decrease).

On June 23, 2022, we announced that in our open-label, Phase Ib/II study in the EU all six patients in the lower-

dose cohort and five out of the nine patients in the higher-dose cohort had been treated with AMT-130.

In August 2022, we announced a voluntary postponement of AMT-130 higher-dose procedures due to SUSARs

reported in three of the 14 patients that were treated with the higher dose of AMT-130. Two patients experienced localized
inflammatory responses and related symptoms shortly after the procedure, while the third patient experienced severe
headaches and other related symptoms. In October 2022, after completing a comprehensive safety investigation, the DSMB
recommended resuming treatment at the higher dose of AMT-130 for the remaining five European patients and any patients
in the U.S. trial who are eligible to cross over from the control arm to the treatment. All three patients have experienced
full resolution of the reported SUSARs.

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We  have  added  additional  risk  mitigation  procedures  including  closer  patient  monitoring  during  the  first  two
weeks after the administration of AMT-130 and a seven-day, post-surgical in-person visit. The DSMB recommended that
the use of immunosuppression remain at the discretion of the treating physician.

Temporal Lobe Epilepsy Program (AMT-260)

Temporal Lobe Epilepsy Disease and Market Background

TLE  affects  approximately  1.3  million  people  in  the  U.S.  and  EU  alone,  of  which  approximately  0.8  million
patients  are  unable  to  adequately  control  acute  seizures  with  currently  approved  anti-epileptic  therapies.  Patients  with
refractory TLE experience increased morbidity, excess mortality, and poor quality of life.

Our Development of AMT-260 for Temporal Lobe Epilepsy

In July 2021, we acquired Corlieve Therapeutics (“Corlieve”) and its lead program, now known as AMT-260, to
treat temporal lobe epilepsy. AMT-260 is being developed based on exclusive licenses to certain patents Corlieve obtained
in 2020 from two French research institutions that continue to collaborate with us.

AMT-260  is  a  gene  therapy  using  an  AAV9  vector.  The  use  of  AAV9  to  deliver  any  sequence  that  affects  the
expression  of  the  GRIK2  gene  in  humans  has  been  exclusively  licensed  from  Regenxbio  Inc  (“Regenxbio”).  Regenxbio
provides  contractually  agreed  research  and  development  services  up  to  the  transfer  of  manufacturing  activities  to  a
designated contract manufacturer.

AMT-260, employs miRNA silencing technology to target suppression of aberrantly expressed GluK2 containing

kainate receptors in the hippocampus of patients with rTLE.

In October 2021, we presented preclinical data for AMT-260 at the ESGCT. AMT-260 reduces the expression of
GluK2 in cortical neurons, reduces epileptiform activity and hyperlocomotion in a preclinical model of epilepsy and blocks
epileptiform discharges in organotypic slices from patients with TLE.

In  July  2022,  we  initiated  IND-enabling,  GLP  toxicology  studies  in  non-human  primates  for  our  gene  therapy

candidate in rTLE.

Parkinson’s Disease (AMT-210)

AMT-210  is  our  preclinical  product  candidate  for  the  treatment  of  α-synucleinopathies,  a  group  of
neurodegenerative  diseases  characterized  by  anormal  accumulation  of  insoluble  α-synuclein  in  neurons  and  glial  cells,
including Parkinson’s disease, dementia with Lewy bodies and multiple systems atrophy. Although varying in prevalence,
symptom patterns, and severity among disorders, all α-synucleinopathies have in common the loss of neurons that affects
longevity and quality of life.

AMT-210  is  a  one-time,  brain-target  AAV  gene  therapy  incorporating  uniQure’s  miQURE  gene  silencing
technology.  It  is  designed  to  reduce  the  amount  of  misfolded  alpha-synuclein  protein  and  subsequent  fibril  formation  in
patients with familial and sporadic disease.

Alzheimer’s Disease (AMT-240)

AMT-240 

is  our  preclinical  product  candidate  for 

treatment  autosomal  dominant  Alzheimer’s
disease. Alzheimer’s  disease  causes  loss  of  memory  and  dementia  and  is  the  most  common  neurodegenerative  disease.
Human  genetic  studies  suggest  that  the  Apolipoprotein  E  (APOE)  gene  is  an  important  factor  in  the  pathogenesis  of
Alzheimer’s  disease.  APOE  consists  of  3  major  isoforms  that  are  structurally  and  functionally  different.  The  APOE4
isoform is associated with earlier onset of Alzheimer’s disease while APOE2 and variants of APOE3 are protective.

the 

AMT-240  is  a  one-time  gene  therapy  using  uniQure's  miQURE  gene-silencing  technology  to  silence  the  toxic
APOE4 variant while expressing a protective APOE variant. It is initially targeted as a treatment for autosomal dominant
Alzheimer’s disease patients but may be effective for a broader population of patients.

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Amyotrophic Lateral Sclerosis Caused by Mutations in C9ORF72 (AMT-161)

AMT-161 is our preclinical product candidate that uses our miQURE gene silencing technology to target a toxic

allele of C9ORF72 as a potential treatment for ALS. 

ALS is caused by degeneration of upper and lower motor neurons, resulting in muscle weakness and atrophy. This
rapid progressive loss of motor neurons typically starts at mid-life and progresses over the course of 2-8 years, leading to
loss of movement and death.

About  20%  of  ALS  has  a  genetic  cause.  The  most  common  genetic  mutation  that  causes  ALS  is  a  G4C2
hexanucleotide repeat expansion in the C9ORF72 gene. The hexanucleotide expansion causes the formation of ribonucleic
acid (“RNA”) aggregates and the production of toxic dipeptides that ultimately lead to neuronal death. AMT-161 is a one-
time, intrathecally-administered AAV gene therapy that targets the repeat-expanded C9ORF72 allele to lower toxic RNA
aggregates and prevent dipeptide protein formation.

Amyotrophic Lateral Sclerosis caused by mutations in SOD1(AMT-162)

On January 31, 2023, we announced that we entered into a global licensing agreement with Apic Bio for a novel,
one-time,  intrathecally  administered  gene  therapy  for  ALS  caused  by  mutations  in  superoxide  dismutase  1  (“SOD1”),  a
rapidly progressing, rare motor neuron disease that leads to loss of everyday functions and is uniformly fatal (previously
known as APB-102). With this agreement, we have added AMT-162 to our pipeline of gene therapies to treat neurological
disorders. The FDA has cleared the investigational new drug application for APB-102 and has granted Orphan Drug and
Fast Track designation. Mutations in the SOD1 gene of ALS account for approximately one-fifth of all inherited forms of
this  fatal  disease.  APB-102  is  comprised  of  a  recombinant  AAVrh10  vector  that  expresses  a  miRNA  designed  to  knock
down the expression of SOD1 with the goal of slowing down or potentially reversing the progression of ALS in patients
with SOD1 mutations. We plan to initiate a Phase I/II trial of AMT-162 in the second half of 2023.

New Technology Development

We are seeking to develop next-generation technologies with the goal of further improving the potential of AAV-

based gene therapies to treat patients suffering from debilitating diseases.

We  are  focused  on  innovative  technologies  across  each  of  the  key  components  of  an  AAV-based  gene  therapy,
including:  (i)  the  capsid,  or  the  outer  viral  protein  shell  that  encloses  the  target  deoxyribonucleic  acid  (“DNA”);  (ii)  the
cargo, including the transgene or therapeutic gene, and promoters, or the DNA sequence that drives the expression of the
transgene; and (iii) administration techniques.

We  dedicate  significant  effort  to  designing  and  screening  novel  AAV  capsids  with  the  potential  for  (i)  higher
biological potency; (ii) improved biodistribution including greater cell transduction and increased cellular specificity; and
(iii)  enhanced  safety.  We  believe  we  have  significant  expertise  in  vector  engineering  and  have  created  promising
genetically engineered capsids using both rational and directed evolution approaches.

We  also  work  on  designing  synthetic  promoters  that  enable  high  levels  of  tissue  or  disease  specific  gene
expression. A “promoter” is an essential component of a gene therapy construct that controls expression of a therapeutic
protein. Synthetic promoters, that do not exist in nature, are optimally tailored to drive gene expression at a desired level
and specificity.

To  further  tailor  and  optimize  gene  therapies  to  address  certain  disorders  we  may  also  incorporate  specific
modifications into the transgenes of our gene therapy constructs. For example, we incorporated the Padua-FIX variant into
our  hemophilia  B  gene  therapy  to  substantially  increase  the  resulting  FIX  activity  and  potentially  improve  clinical
outcomes.  For  other  programs,  such  as  our  gene  therapy  construct  for  Fabry  disease,  we  have  also  utilized  modified
transgenes with the goal of enhancing efficacy, durability, and safety, as well as expanding the access of gene therapies to
patients with inhibitors.

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We are developing methods for delivering multiple doses of a gene therapy to a patient using a combination of
immune  modulation  and  antibody  neutralization.  The  ability  to  deliver  multiple  doses  of  an  AAV  to  a  patient  could
potentially increase our ability to deliver the correct dose of a virus to a patient and might enable us to re-administer our
gene therapies to patients that have lost expression of a transgene.

We have also demonstrated the ability to deliver engineered DNA constructs that can silence or suppress disease-
causing genes. Our miQURE gene silencing platform, based on exclusively licensed technology from Cold Spring Harbor
Laboratory (“CSHL”), is designed to degrade mutated genes without off-target toxicity and induce silencing of the mutated
gene  in  the  entire  target  organ  through  secondary  exosome-mediated  delivery.  miQURE-based  gene  therapy  candidates,
such as AMT-130, incorporate proprietary, therapeutic miRNA constructs that can be delivered using AAVs to potentially
provide  long-lasting  activity.  Preclinical  studies  of  miQURE-based  gene  therapies  have  demonstrated  several  important
advantages,  including  enhanced  tissue-specificity,  improved  nuclear  and  cytoplasmic  gene  lowering  and  no  off-target
effects associated with impact to the cellular miRNA or messenger RNA transcriptome.

Commercial-Scale Manufacturing Capabilities

The ability to reliably produce at a high quality and at commercial scale is a critical success factor in AAV gene
therapy. With the exception of AMT-260 we produce our gene therapies either at our Amsterdam, the Netherlands or our
commercially-licensed, Lexington, Massachusetts-based manufacturing facility using a proprietary baculovirus expression
vector system.

We believe our integrated manufacturing capabilities provide us several potential advantages, including:

(1) Know-how. Since our founding in 1998, we have invested heavily in developing optimized processes and methods
to  reliably  and  reproducibly  manufacture  AAV-based  gene  therapies  at  commercial  scale.  During  this  time,  we
have  accumulated  significant  internal  experience  and  knowledge  of  the  underlying  production  technology  and
critical  quality  attributes  of  our  products.  These  learnings  have  been  essential  in  developing  a  modular,  third
generation production system that can be used to produce all our gene therapy products.

(2) Flexibility.  Controlling  cGMP  manufacturing  allows  us  to  rapidly  adapt  our  production  schedule  to  meet  the
needs  of  our  business.  With  the  exception  of  AMT-260  and  AMT-161  programs,  we  do  not  rely  on  contract
manufacturers, nor do we require costly and time-consuming technology transfers to third parties. Our facility is
designed  to  commercially  supply  multiple  products  and  are  flexibly  designed  to  accommodate  expansion  and
scale up as our needs change.

(3) Faster Path to Market. We believe our manufacturing platform enables us to rapidly produce new products for
clinical  investigation,  minimize  time  between  clinical  phases  and  complete  scale-up  as  product  candidates
advance into late-stage development and commercialization.

(4) Scalability. We have demonstrated our manufacturing process is reproducible at volumes ranging from 2 liters to
500 liters and believe it is possible to achieve higher scale production with our insect-cell, baculovirus system.

(5) Low Cost of Goods. We believe our ability to scale production has the potential to significantly reduce unit costs.
Our  manufacturing  process  also  utilizes  fully  disposable  components,  which  enables  faster  change-over  times
between batches and lower costs associated with cleaning and sterilization. Additionally, our production system
does not require the use of plasmids, which can be a costly raw material.

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Intellectual Property

Introduction

We strive to protect the proprietary technologies that we believe are important to our business, including seeking
and  maintaining  patent  protection  in  the  U.S.,  Europe,  and  other  countries  for  novel  components  of  gene  therapies,  the
chemistries,  and  processes  for  manufacturing  these  gene  therapies,  the  use  of  these  components  in  gene  therapies,  our
technology  platform,  and  other  inventions  and  related  technology.  We  also  rely  on  trade  secrets,  security  measures  and
careful monitoring of our proprietary information to protect aspects of our business that are not amenable to, or that we do
not consider appropriate for, patent protection.

We  expect  that  our  probability  of  success  will  be  significantly  enhanced  by  our  ability  to  obtain  and  maintain
patent  and  other  proprietary  protection  for  commercially  important  technology,  inventions  and  know-how  related  to  our
business, defend and enforce our patents, maintain our licenses to use intellectual property owned by third parties, preserve
the  confidentiality  of  our  trade  secrets  and  operate  without  infringing  the  valid  and  enforceable  patents  and  other
proprietary  rights  of  third  parties.  We  also  rely  on  know-how,  continuing  technological  innovation  and  in-licensing
opportunities to develop, strengthen and maintain our proprietary position in the field of AAV-based gene therapies.

In  some  cases,  we  are  dependent  on  the  patented  or  proprietary  technology  of  third  parties  to  develop  and
commercialize  our  products.  We  must  obtain  licenses  from  such  third  parties  on  commercially  reasonable  terms,  or  our
business could be harmed, possibly materially. For example, we license from third parties essential parts of the therapeutic
gene cassettes as well as the principal AAV vectors we use and key elements of our manufacturing process. We anticipate
that we will require additional licenses in the future.

Because most patent applications throughout the world are confidential for 18 months after the earliest claimed
priority date, and since the publication of discoveries in the scientific and patent literature often lags actual discoveries, we
cannot  be  certain  that  we  were  the  first  to  invent  or  file  applications  for  the  inventions  covered  by  our  pending  patent
applications. Moreover, we may have to participate in post-grant proceedings in the patent offices of the U.S. or foreign
jurisdictions, such as oppositions, reexaminations, or interferences, in which the patentability or priority of our inventions
are challenged. Such proceedings could result in substantial cost, even if the eventual outcome is favorable to us.

Our  intellectual  property  portfolio  consists  of  owned  and  in-licensed  patents,  copyrights,  licenses,  trademarks,

trade secrets and other intellectual property rights.

Patent Portfolio

Our  gene  therapy  programs  are  protected  by  patents  and  patent  applications  directed  to  various  aspects  of  our
technology. For example, our gene therapy programs are protected by patents and patent applications with composition-of-
matter or method of use claims that cover the therapeutic gene, the promoter, the viral vector capsid, or other specific parts
of  these  technologies.  We  also  seek  protection  of  core  aspects  of  our  manufacturing  process,  particularly  regarding  our
baculovirus expression system for AAV vectors in insect cells. In addition, we have filed manufacturing patent applications
with  claims  directed  to  alternative  compositions-of-matter  and  manufacturing  processes  to  seek  better  protection  from
competitors.

We file the initial patent applications for our commercially important technologies in both Europe and the U.S..
For the same technologies, we typically file international patent applications under the PCT within a year. We also may
seek, usually on a case-by-case basis, local patent protection in Canada, Australia, Japan, China, India, Israel, South Africa,
New Zealand, South Korea, and Eurasia, as well as South American jurisdictions such as Brazil and Mexico.

As  of  December  31,  2022,  our  intellectual  property  portfolio  included  120  issued  patents  (including  30  U.S.
patents and 14 patents granted by the European Patent Office (“EPO”)) and 160 pending patent applications (including 29
U.S. patent applications and 36 EPO patent applications).

These patents relate to a variety of technologies including our product candidates that are in development and our

manufacturing and technology platform.

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Our Patent Portfolio Related to Certain Programs

Hemophilia B (AMT-061)

We own a patent family, including patents and patent applications, directed to the use of the Padua mutation in

human Factor IX (“hFIX”) for gene therapy in etranacogene dezaparvovec.

Huntington’s disease (AMT-130)

We own two patent families directed to gene therapy treatment of Huntington’s disease, including with AMT-130.
This miQURE gene silencing technology platform is designed to degrade disease-causing genes, without off-target toxicity,
and induce silencing of the entire target organ through secondary exosome-mediated delivery.

Licenses

We  have  obtained  exclusive  or  non-exclusive  rights  from  third  parties  under  a  range  of  patents  and  other
technology  that  we  use  in  our  product  and  development  programs,  as  described  below.  Our  agreements  with  these  third
parties generally grant us a license to make, use, sell, offer to sell, and import products covered by the licensed patent rights
in exchange for our payment of some combination of an upfront amount, annual fees, royalties, a percentage of amounts
we  receive  from  our  licensees  and  payments  upon  the  achievement  of  specified  development,  regulatory  or  commercial
milestones. Some of the agreements specify the extent of the efforts we must use to develop and commercialize licensed
products. The agreements generally expire upon expiration of the last-to-expire valid claim of the licensed patents. Each
licensor may terminate the applicable agreement if we materially breach our obligations and fail to cure the breach within a
specified cure period.

Technology Used for Multiple Programs

We are exploiting technology from third-party sources described below in more than one of our programs.

Cold Spring Harbor Laboratory

In 2015, we entered into a license agreement with CSHL in which CSHL granted to us an exclusive, sublicensable
license to develop and commercialize certain of CSHL’s patented RNAi-related technology for use in connection with the
treatment or prevention of Huntington’s disease. The standard 20-year patent term for the licensed patents expires in 2031.

In 2018, we entered into an amendment of the license agreement with CSHL that expanded the license to include
the diagnosis, treatment, or prevention of all CNS diseases in the Field, including but not limited to Huntington’s disease.
Under the amended license agreement CSHL granted to us an exclusive license to develop and commercialize therapeutic
products for the additional disease classifications in the Field of liver diseases, neuromuscular diseases, and cardiovascular
diseases and we have subsequently added such products to our pipeline.

Under this license agreement, as amended, annual fees, development milestone payments and future single-digit

royalties on net sales of a licensed product are payable to CSHL.

Protein Sciences

In 2016, we revised our existing license contract with Protein Sciences Corporation for the use of its expresSF+
insect  cell  line  and  associated  technology  for  human  therapeutic  and  prophylactic  uses  (except  influenza)  to  provide  us
with a royalty free, perpetual right and license to the licensed technology in the field of AAV-based gene therapy.

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Technology Used for Specific Development Programs

Hemophilia B

Padua

On  April  17,  2017,  we  entered  into  an  Assignment  and  License  Agreement  with  Dr.  Simioni  (the  “Padua
Assignment”).  Pursuant  to  the  Padua  Assignment,  we  acquired  from  Dr.  Simioni  all  rights,  title  and  interest  in  a  patent
family  covering  the  variant  of  the  FIX  gene,  carrying  an  R338L  mutation  (FIX-Padua;  “Padua  IP”).  Under  the  Padua
Assignment,  we  have  also  licensed  certain  know-how  included  in  the  Padua  IP.  We  have  provided  Dr.  Simioni  with  an
initial license fee and reimbursement of past expenses. Under the agreement, additional payments may come due upon the
achievement  of  certain  milestone  events  related  to  the  development  of  the  Padua  IP  or  as  royalties  on  a  percentage  of
certain  revenues.  We  have  granted  a  license  of  the  Padua  IP  back  to  Dr.  Simioni  for  therapeutic  or  diagnostic  use  of  a
modified Factor IX protein (other than in connection with gene therapy) and any application for non-commercial research
purposes.  We  have  agreed  to  indemnify  Dr.  Simioni  for  claims  arising  from  our  research,  development,  manufacture,  or
commercialization of any product making use of the Padua IP, subject to certain conditions. The Padua Assignment will
remain  in  effect,  unless  otherwise  terminated  pursuant  to  the  terms  of  the  Padua  Assignment,  until  the  later  of  (i)  the
expiration date of the last of the patents within the Padua IP and (ii) the expiration of the payment obligations under the
Padua Assignment.

St. Jude Children’s Research Hospital

In 2008, we entered into a license agreement with St. Jude Children’s Research Hospital (“St. Jude”), which we
amended in 2012. Under this license agreement, St. Jude has granted us an exclusive license, with a right to sublicense, to
patent rights relating to expression of hFIX in gene therapy vectors, to make, import, distribute, use, and commercialize
products  containing  hFIX  covered  by  a  valid  patent  claim  in  the  field  of  gene  therapy  for  treatment  or  prophylaxis  of
hemophilia B. In addition, we have a first right of negotiation regarding any patent applications that are filed by St. Jude
for  any  improvements  to  the  patent  rights  licensed  to  us.  The  U.S.  patent  rights  will  expire  in  2028  and  the  European
patents will expire in 2025.

We have agreed to pay St. Jude a royalty equal to a low single-digit percentage of net sales, if any, by us or our
sublicensees  of  products  covered  by  the  licensed  patent  rights,  and  a  portion  of  certain  amounts  we  receive  from
sublicensees ranging from a mid-single digit to a mid-teen double-digit percentage of such amounts. With respect to our
collaboration with CSL Behring, we have agreed with St. Jude on an apportionment of certain amounts we receive from
CSL Behring as sublicensing revenue that is equivalent to a low-single digit percentage of such amounts.

The  agreement  will  remain  in  effect  until  no  further  payment  is  due  relating  to  any  licensed  product  under  this
agreement or either we or St. Jude exercise our rights to terminate it. St. Jude may terminate the agreement in specified
circumstances  relating  to  our  insolvency.  We  may  terminate  the  agreement  for  convenience  at  any  time  subject  to  a
specified notice period.

Temporal Lobe Epilepsy

Regenxbio

In  June  2020,  Corlieve  entered  into  an  agreement,  subsequently  amended  in  June  2021,  with  Regenxbio  for  an
exclusive (in the field of using AAV9 to expression of the GRIK2 gene in humans (the “Field”)), sublicensable, royalty-
bearing,  worldwide  license  under  Regenxbio’s  interest  in  EU  patent  application  19185533.7  (the  “Foreground  Patents”)
and  related  patents,  as  well  as  patents  covering  inventions  developed  during  the  collaboration  and  certain  patents  and
know-how relating to AAV9. The license also includes non-exclusive rights to exploit the licensed Foreground Patents and
certain  related  patents  know-how  developed  in  collaboration  pursuant  to  the  license  agreement  outside  the  Field.  The
license also includes retained and license back rights that permit Regenxbio and its upstream licensors to exploit for any
research,  development,  commercialization,  or  other  purposes  certain  patents,  inventions  and  know-how  (other  than  the
Foreground Patents) subject to or created pursuant to the license agreement.

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Payment obligations under the agreement provide for royalty payments on net sales in the mid-single digit to low-
double  digits,  and  milestone  payments  to  Regenxbio  in  the  mid-tens  of  millions  of  dollars  related  to  clinical  trials,
commercialization, and net sales. The agreement also calls for sublicense fees in the low-double digit range. The royalty is
paid  on  sales  of  license  products  using  any  of  licensed  patents  or  know-how  for  as  long  as  the  agreement  is  in  effect.
Royalty  and  milestone  payments  may  continue  to  be  owed  under  the  license  following  termination  of  the  agreement  if
licensed  products  are  sold  following  termination  of  the  license.  Under  the  agreement,  Corlieve  has  certain  diligence
obligations and Regenxbio has certain obligations related to the pre-clinical development of manufacturing technology.

Inserm Transfert

In January 2020, Corlieve entered into license agreement with Inserm Transfert SA (also acting as a delegate for
the  French  National  Institute  of  Health  and  Medical  Research)  and  La  societe  SATT  Aquitaine  (the  counterparties
collectively  referred  to  as  “Inserm  Transfert”).  Under  the  license  agreement,  Corlieve  is  granted  an  exclusive,
sublicensable, royalty-bearing, worldwide license under European Patent (“EP”) patent application 13306265.3 in the field
of the prevention and treatment of epilepsy, and in Inserm Transfert’s share in EP patent application 19185533.7 (which is
co-owned  by  Regenxbio)  in  the  field  of  all  human  use.  Corlieve  also  is  granted  a  non-exclusive,  sublicensable,  royalty-
bearing,  worldwide  license  under  certain  know-how  in  the  fields  that  may  be  developed  by  Inserm  pursuant  to  the
agreements. Under the agreements, Inserm retains certain rights for teaching, academic and/or research purposes.

Payment obligations under the agreements include a royalty on the net sales of license products in the low single
digits, milestone payments associated with clinical trial and regulatory approval milestones of multiple licensed products
totaling in the low-single digit millions of Euros. The agreement also calls for sublicense fees in the low to mid double-
digit  range  depending  on  the  timing  of  such  sublicense.  The  obligation  to  pay  royalties  extends  until  the  later  of  the
expiration of the patent rights, any regulatory exclusivity period, and 10 years from the first commercial sale of a licensed
product.

Trade Secrets

In  addition  to  patents  and  licenses,  we  rely  on  trade  secrets  and  know-how  to  develop  and  maintain  our
competitive  position.  For  example,  significant  aspects  of  the  process  by  which  we  manufacture  our  gene  therapies  are
based on unpatented trade secrets and know-how. We seek to protect our proprietary technology and processes and obtain
and  maintain  ownership  of  certain  technologies,  in  part,  through  confidentiality  agreements  and  invention  assignment
agreements with our employees, consultants, scientific advisors, contractors and commercial collaborator. We also seek to
preserve the integrity and confidentiality of our data, trade secrets and know-how by maintaining physical security of our
premises and physical and electronic security of our information technology systems.

Trademarks

We  have  a  number  of  material  registered  trademarks,  including  “uniQure”,  that  we  have  registered  in  various
jurisdictions  including  the  U.S.  and  the  EU.  We  may  seek  trademark  protection  for  other  product  candidates  and
technologies as and when appropriate.

Competition

The biotechnology and pharmaceutical industries, including in the gene therapy field, are characterized by rapidly
advancing  technologies,  intense  competition,  and  a  strong  emphasis  on  intellectual  property.  We  face  substantial
competition  from  many  different  sources,  including  large  and  specialty  pharmaceutical  and  biotechnology  companies,
academic research institutions and governmental agencies and public and private research institutions.

We face worldwide competition from larger pharmaceutical companies, specialty pharmaceutical companies and
biotechnology  firms,  universities  and  other  research  institutions  and  government  agencies  that  are  developing  and
commercializing  pharmaceutical  products.  Our  key  competitors  focused  on  developing  therapies  in  various  indications,
include  among  others,  Pfizer,  Freeline  Therapeutics,  Intellia  Therapeutics,  Sangamo  Biosciences,  Voyager  Therapeutics,
Passage  Bio,  Roche,  PTC  Therapeutics,  Prilenia  Therapeutics,  CombiGene,  Caritas  Therapeutics,  Alnylam,  Wave  Life
Sciences, Bayer AG, Amicus Therapeutics and 4D Molecular Therapeutics.

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We  also  compete  with  existing  standards  of  care,  therapies,  and  symptomatic  treatments,  as  well  as  any  new

therapies that may become available in the future for the indications we are targeting.

Many of our current or potential competitors, either alone or with their collaborators, have significantly greater
financial resources and expertise in research and development, manufacturing, preclinical testing, conducting clinical trials
and  marketing  approved  products  than  we  do.  Mergers  and  acquisitions  in  the  pharmaceutical,  biotechnology  and  gene
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.

The  key  competitive  factors  affecting  the  success  of  all  our  programs  are  likely  to  be  their  efficacy,  safety,
convenience, price, and the availability of reimbursement from government and other third-party payers. We also believe
that,  due  to  the  small  size  of  the  patient  populations  in  the  orphan  indications  we  target,  being  first  to  market  will  be  a
significant competitive advantage. We believe that our advantages in vector and manufacturing technology will allow us to
reach market in a number of indications ahead of our competitors, and to capture the markets in these indications.

Government Regulation and Reimbursement

Government  authorities  in  the  U.S.,  EU  and  other  countries  extensively  regulate,  among  other  things,  the
approval,  research,  development,  nonclinical  and  clinical  testing,  manufacture  (including  any  manufacturing  changes),
packaging, storage, recordkeeping, labeling, advertising, promotion, distribution, marketing, post-approval monitoring and
reporting, reimbursement, and import and export of pharmaceutical products, biological products, and medical devices. We
believe  that  all  our  product  candidates  will  be  regulated  as  biological  products,  or  biologics,  and  in  particular,  as  gene
therapies, and will be subject to such requirements and regulations under U.S. and foreign laws. For other countries outside
of the U.S. and the EU, marketing approval and pricing and reimbursement requirements vary from country to country. If
we  fail  to  comply  with  applicable  regulatory  requirements,  we  may  be  subject  to,  among  other  things,  civil  penalties,
refusal  to  approve  pending  applications,  suspension  or  withdrawal  of  regulatory  approvals,  product  recalls,  seizure  of
products, operating restrictions, and criminal prosecution.

Regulation in the United States

In  the  U.S.,  the  FDA  regulates  biologics  under  the  Public  Health  Service  Act  (“PHSA”)  and  the  Federal  Food,
Drug,  and  Cosmetic  Act  (“FDCA”)  and  regulations  and  guidance  implementing  these  laws.  These  laws  and  regulatory
guidance are continually evolving. By example, in March 2020, the U.S. Congress passed the Coronavirus Aid, Relief, and
Economic  Security  Act,  or  CARES  Act,  which  includes  various  provisions  regarding  FDA  drug  shortage  reporting
requirements, as well as provisions regarding supply chain security, such as risk management plan requirements, and the
promotion of supply chain redundancy and domestic manufacturing. Executive actions have also been issued to encourage
domestic manufacturing and the Consolidated Appropriations Act, 2023, was passed at the end of 2022, which included a
number  of  updates  to  the  FDCA.  FDA  has  issued  a  number  of  guidance  documents  concerning  how  sponsors  and
investigators  may  address  COVID-19  challenges,  including  challenges  specific  to  gene  therapies.  These  guidance
documents are continually evolving.

Obtaining  regulatory  approvals  and  ensuring  compliance  with  applicable  statutes  and  regulatory  requirements
entails the expenditure of substantial time and financial resources, including payment of user fees for applications to the
FDA. All our current product candidates are subject to regulation by the FDA as biologics. An applicant seeking approval
to market and distribute a new biologic in the U.S. must typically undertake the following:

● completion  of  nonclinical  laboratory  tests,  animal  studies  and  formulation  studies  in  compliance  with  the

FDA’s current Good Laboratory Practice regulations;

● submission to the FDA of an IND application which allows human clinical trials to begin unless the FDA

objects within 30 days; the sponsor of an IND or its legal representative must be based in the U.S.;

● approval by an independent institutional review board (“IRB”) and, for some studies, Institutional Biosafety

Committee (“IBC”) before each clinical trial may be initiated;

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● performance  of  adequate  and  well-controlled  human  clinical  trials  in  accordance  with  the  FDA’s  cGCP  to
establish  substantial  evidence  of  the  safety  and  efficacy  for  the  proposed  biological  product  for  each
indication;

● preparation and submission to the FDA of a Biologics License Application (“BLA”);

● satisfactory  completion  of  one  or  more  FDA  inspections  or  remote  regulatory  assessments  of  the
manufacturing  facility  or  facilities  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,  as  well  as  selected  clinical  trial  sites  and
investigators to determine cGCP compliance;

● approval of the BLA by the FDA, in consultation with an FDA advisory committee, if deemed appropriate by

the FDA; and

● compliance  with  any  post-approval  commitments,  including  Risk  Evaluation  and  Mitigation  Strategies

(“REMS”), and post-approval studies required by the FDA.

Human Clinical Studies in the United States under an IND

Before initiating clinical studies in the U.S. or under an IND, investigational product sponsors must first complete
nonclinical  studies.  Nonclinical  studies  include  laboratory  evaluation  of  chemistry,  pharmacology,  toxicity,  and  product
formulation, as well as animal studies to assess potential safety and efficacy. Such studies must generally be conducted in
accordance with the FDA’s GLPs.

Clinical trials involve the administration of the investigational biologic to human subjects under the supervision of
qualified investigators in accordance with current GCP requirements, which includes requirements for informed consent,
study conduct, and IRB review and approval. Special clinical trial ethical considerations also must be taken into account if
a study involves children. A protocol for each clinical trial and any subsequent protocol amendments must be submitted to
the FDA as part of an IND. Sponsors must also provide FDA with diversity action plans. INDs include nonclinical study
reports,  together  with  manufacturing  information,  analytical  data,  any  available  clinical  data,  or  literature,  and  proposed
clinical study protocols among other things. A clinical trial may not proceed in the U.S. unless and until an IND becomes
effective, which is 30 days after its receipt by the FDA. The FDA may raise concerns or questions related to one or more
components  of  an  IND  and  place  the  IND  on  clinical  hold  if  during  its  review  the  FDA  determines  that  study  subjects
would be exposed to significant risk of illness or injury. In such a case, the IND sponsor and the FDA must resolve any
outstanding concerns before the clinical trial can begin. Clinical holds also may be imposed by the FDA at any time before
or during trials due to safety concerns or non-compliance.

The protocol and informed consent documents, as well as other subject communications must also be approved by
an IRB that continues to oversee that trial. In the case of gene therapy studies, an IBC at the local level may also review
and maintain oversight over the particular study, in addition to the IRB. The FDA, an IRB, and IBC, or the sponsor may
suspend or terminate a clinical trial at any time on various grounds, including a finding that the research subjects are being
exposed to an unacceptable health risk or that research requirements are not being met.

Additionally,  some  clinical  trials  are  overseen  by  an  independent  group  of  qualified  experts  organized  by  the
clinical trial sponsor that regularly reviews accumulated data and advises the study sponsor regarding the continuing safety
of the trial. This group may also review interim data to assess the continuing validity and scientific merit of the clinical
trial.  This  group  receives  special  access  to  unblinded  data  during  the  clinical  trial  and  may  advise  the  sponsor  to  halt,
pause, or otherwise modify the clinical trial.

Information about certain clinical trials, including results, must be submitted within specific timeframes for listing
on  the  ClinicalTrials.gov  website.  Sponsors  or  distributors  of  investigational  products  for  the  diagnosis,  monitoring,  or
treatment  of  one  or  more  serious  diseases  or  conditions  must  also  have  a  publicly  available  policy  on  evaluating  and
responding  to  requests  for  expanded  access.  Investigators  must  also  provide  certain  information  to  the  clinical  trial
sponsors to allow the sponsors to make certain financial disclosures to the FDA.

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Subsequent clinical protocols and amendments must also be submitted to an active IND but are not subject to the
30-day review period imposed on an original IND. Progress reports detailing the results of the clinical trials must also be
submitted at least annually to the FDA and the IRB and more frequently if serious adverse events or other significant safety
information is found. There is a risk that once a new protocol or amendment is submitted to an active IND there may be an
extended  period  before  the  FDA  may  comment  or  provide  feedback.  This  may  result  in  a  need  to  modify  an  ongoing
clinical trial to incorporate this feedback or even a clinical hold of the trial. There is also risk that FDA may not provide
comments or feedback but may ultimately disagree with the design of the study once a BLA is submitted.

Human clinical trials are typically conducted in three sequential phases, which may overlap or be combined:

● Phase I: The biological product is initially introduced into healthy human subjects or patients with the target
disease or condition and tested for safety, dosage tolerance, absorption, metabolism, distribution, excretion
and, if possible, to gain an early understanding of its effectiveness.

● Phase II: The biological product is administered to a limited patient population to further identify possible
adverse  effects  and  safety  risks,  to  preliminarily  evaluate  the  efficacy  of  the  product  for  specific  targeted
diseases and to determine dosage tolerance and optimal dosage.

● Phase  III:  The  biological  product  is  administered  to  an  expanded  patient  population,  generally  at
geographically  dispersed  clinical  trial  sites,  in  adequate  and  well-controlled  clinical  trials  to  generate
sufficient  data  to  statistically  confirm  the  potency  and  safety  of  the  product  for  approval,  to  establish  the
overall  risk-benefit  profile  of  the  product  and  to  provide  adequate  information  for  the  labelling  of  the
product.  Typically,  two  Phase  3  trials  are  required  by  the  FDA  for  product  approval.  Under  some  limited
circumstances,  however,  the  FDA  may  approve  a  BLA  based  upon  a  single  Phase  3  clinical  study  plus
confirmatory evidence or a single large multicenter trial without confirmatory evidence.

Recent legislation further established a new program that may be used to facilitate future marketing applications

and development programs following a first product approval. Specifically, the Consolidated Appropriations Act, 2023
established a program whereby a platform technology that is incorporated within or utilized by an approved drug or
biologic product may be designated as a platform technology, provided that certain conditions are met, in which case
development and approval of subsequent products using such technology may be expedited.

In addition, under the Pediatric Research Equity Act (the “PREA”), a BLA or BLA supplement for a new active

ingredient, indication, dosage form, dosage regimen, or route of administration, 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. 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. Orphan
products are also exempt from the PREA requirements.

The manufacture of investigational drugs and biologics for the conduct of human clinical trials is subject to cGMP

requirements. Investigational drugs and biologics and active ingredients and therapeutic substances imported into the U.S.
are also subject to regulation by the FDA. Further, the export of investigational products outside of the U.S. is subject to
regulatory requirements of the receiving country as well as U.S. export requirements under the FDCA.

Concurrent with clinical trials, companies usually complete additional nonclinical animal studies and must also

develop additional information about the chemistry and physical characteristics of the product candidate as well as finalize
a process for manufacturing the product in commercial quantities in accordance with cGMP requirements. The
manufacturing process must be capable of consistently producing quality batches of the product candidate and, among
other things, manufacturers must develop methods for testing the identity, strength, quality, potency, and purity of the final
product. Additionally, appropriate packaging must be selected and tested, and stability studies must be conducted to
demonstrate that the product candidate does not undergo unacceptable deterioration over its shelf life.

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Regulation and FDA Guidance Governing Gene Therapy Products

The  FDA  has  and  continues  to  issue  various  guidance  documents  with  respect  to  the  development  and
commercialization of gene therapies. These include guidance on, among other things, the proper preclinical and nonclinical
assessment  of  gene  therapies;  the  chemistry,  manufacturing,  and  controls;  the  design  and  conduct  of  clinical  trials;  the
design and analysis of shedding studies for virus or bacteria based gene therapies; 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 and
patients who have been exposed to gene therapies via long-term follow-up with associated regulatory reporting. The FDA
has also issued guidance documents specific to gene therapies during the COVID-19 public health emergency, including
one on manufacturing considerations and the conduct of risk assessments. FDA has further issued guidance focused on the
development  of  gene  therapies  for  the  treatment  of  neurodegenerative  diseases,  rare  diseases,  and  hemophilia,  as  such
products may face special challenges.

Certain  gene  therapy  studies  are  also  subject  to  the  National  Institutes  of  Health’s  Guidelines  for  Research
Involving Recombinant DNA Molecules, (“NIH Guidelines”). The NIH Guidelines include the review of the study by an
IBC.  The  IBC  assesses  the  compliance  of  the  research  with  the  NIH  Guidelines,  assesses  the  safety  of  the  research  and
identifies any potential risk to public health or the environment.

Compliance with cGMP Requirements

Manufacturers of biologics must comply with applicable cGMP regulations, including quality control and quality
assurance  and  maintenance  of  records  and  documentation.  Manufacturers  and  others  involved  in  the  manufacture  and
distribution of such products must also register their establishments with the FDA and certain state agencies, and provide
the  FDA  a  list  of  products  manufactured  at  the  facilities.  Recently,  the  information  that  must  be  submitted  to  the  FDA
regarding manufactured products was expanded through the Coronavirus Aid, Relief, and Economic Security, or CARES,
Act to include the volume of drugs produced during the prior year. Establishments may be subject to periodic unannounced
inspections  and  remote  regulatory  assessments  by  government  authorities  to  ensure  compliance  with  cGMPs  and  other
laws. Discovery of non-compliance may result in the FDA placing restrictions on a product, manufacturer, or holder of an
approved BLA, and may extend to requiring withdrawal of the product from the market, among other consequences. The
FDA will not approve an application unless it determines that the manufacturing processes and facilities are in compliance
with cGMP requirements and adequate to assure consistent production of the product within required specifications.

FDA Programs to Expedite Product Development

The  FDA  has  several  programs  to  expedite  product  development,  including  fast  track  designation  and
breakthrough therapy designation. These are outlined in specific FDA guidance. Under the fast track program, the sponsor
of  a  biologic  candidate  may  request  the  FDA  to  designate  the  product  for  a  specific  indication  as  a  fast  track  product
concurrent with or after the filing of the IND for the product candidate. To be eligible for a fast track designation, the FDA
must  determine  that  a  product  candidate  is  intended  to  treat  a  serious  or  life-threatening  disease  or  condition  and
demonstrates the potential to address an unmet medical need. This may be demonstrated by clinical or nonclinical data. If
granted, the benefits include greater interactions with the FDA and rolling review of sections of the BLA. In some cases, a
fast track product may be eligible for accelerated approval or priority review.

Moreover, under the provisions of the Food and Drug Administration Safety and Innovation Act, enacted in 2012,
a sponsor can request designation of a product candidate as a breakthrough therapy. A breakthrough therapy is defined as a
product  that  is  intended,  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. Products designated as breakthrough therapies are eligible for rolling review, intensive guidance
on  an  efficient  development  program  beginning  as  early  as  Phase  1  trials,  and  a  commitment  from  the  FDA  to  involve
senior managers and experienced review staff in a proactive collaborative, cross disciplinary review.

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Biologics studied for their safety and effectiveness in treating serious or life-threatening illnesses and that provide
meaningful  therapeutic  benefit  over  existing  treatments  may  receive  accelerated  approval,  which  means  the  FDA  may
approve the product based upon a surrogate endpoint that is reasonably likely to predict clinical benefit, or on a clinical
endpoint that can be measured earlier than irreversible morbidity or mortality, that is reasonably likely to predict an effect
on irreversible morbidity or mortality or other clinical benefit, taking into account the severity, rarity, or prevalence of the
condition and the availability or lack of alternative treatments. A biologic 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. By the date of approval of an accelerated approval product, FDA must specify
the  conditions  for  the  required  post  approval  studies,  including  enrollment  targets,  the  study  protocol,  milestones,  and
target completion dates. FDA may also require that the confirmatory Phase 4 studies be commenced prior to FDA granting
a product accelerated approval. Reports on the progress of the required Phase 4 confirmatory studies must be submitted to
FDA every 180 days after approval. Failure to conduct required post-approval studies, or confirm a clinical benefit during
post-marketing studies, will allow the FDA to withdraw the drug or biologic from the market on an expedited basis using a
statutorily  defined  streamlined  process.  Failure  to  conduct  the  required  Phase  4  confirmatory  studies  or  to  conduct  such
studies with due diligence, as well as failure to submit the required update reports can subject a sponsor to penalties.. All
promotional materials for drug or biologic candidates approved under accelerated regulations are subject to prior review by
the  FDA.  In  recent  years,  the  accelerated  approval  pathway  has  come  under  significant  FDA  and  public  scrutiny.
Accordingly,  the  FDA  may  be  more  conservative  in  granting  accelerated  approval  or,  if  granted,  may  be  more  apt  to
withdrawal  approval  if  clinical  benefit  is  not  confirmed.  FDA  may  also  require  that  the  confirmatory  Phase  4  study  be
commenced prior to FDA granting a product accelerated approval.

Even  if  a  product  qualifies  for  one  or  more  of  these  programs,  the  FDA  may  later  decide  that  the  product  no
longer  meets  the  conditions  for  qualification  or  decide  that  the  time  period  for  FDA  review  or  approval  will  not  be
shortened.

Submission of a BLA

The  results  of  the  nonclinical  and  clinical  studies,  together  with  detailed  information  relating  to  the  product’s
chemistry, manufacture, controls, and proposed labeling, among other things, are submitted to the FDA as part of a BLA
requesting  a  license  to  market  the  product  for  one  or  more  indications.  The  submission  of  a  BLA  is  subject  to  an
application  user  fee,  though  products  with  orphan  designation  are  exempt  from  the  BLA  filing  fee.  The  sponsor  of  an
approved  BLA  is  also  subject  to  annual  program  user  fees.  Orphan  products  may  also  be  exempt  from  program  fees
provided that certain criteria are met. These fees are typically increased annually. Under the Prescription Drug User Fee
Act (“PDUFA”) the FDA has agreed to specified performance goals in the review of BLAs.

Most  such  applications  are  meant  to  be  reviewed  within  ten  months  from  the  filing  acceptance  date  (typically
60 days after date of filing), and most applications for priority review products are meant to be reviewed within six months
of the filing acceptance date (typically 60 days after date of filing). Priority review designation may be assigned to product
candidates  that  are  intended  to  treat  serious  conditions  and,  if  approved,  would  provide  significant  improvements  in  the
safety or effectiveness of the treatment, diagnosis, or prevention of the serious condition.

The FDA may refuse to file an application and request additional information. In this event, the application must
be refiled with the additional information. The refiled application is also subject to assessment of content before the FDA
accepts  it  for  review.  Once  the  submission  is  accepted,  the  FDA  begins  an  in-depth  substantive  review.  The  FDA  will
assign a date for its final decision for the product (the “PDUFA action date”) but can extend this date to complete review of
a  product  application  or  to  consider  additional  information  submitted  during  the  application  review  period.  The  PDUFA
action date is only a goal, thus, the FDA does not always meet its PDUFA dates.

The FDA may also refer certain applications to an advisory committee. Before approving a product candidate for
which no active ingredient (including any ester or salt of active ingredients) has previously been approved by the FDA, the
FDA must either refer that product candidate to an external advisory committee or provide in an action letter, a summary of
the  reasons  why  the  FDA  did  not  refer  the  product  candidate  to  an  advisory  committee.  The  FDA  may  also  refer  other
product  candidates  to  an  advisory  committee  if  the  FDA  believes  that  the  advisory  committee’s  expertise  would  be
beneficial. An advisory committee is typically a panel that includes clinicians and other experts, which review, evaluate,
and make 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.

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The FDA reviews applications to determine, among other things, whether a product candidate meets the agency’s
approval standards and whether the manufacturing methods and controls are adequate to assure and preserve the product’s
identity, strength, quality, potency, and purity. Before approving a marketing application, the FDA typically will inspect or
conduct remote regulatory assessments of 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,  including  contract
manufacturers  and  subcontractors,  are  in  compliance  with  cGMP  requirements  and  adequate  to  assure  consistent
production of the product within required specifications. Additionally, before approving a marketing application the FDA
will  inspect  or  conduct  remote  regulatory  assessments  one  or  more  clinical  trial  sites  to  assure  compliance  with  good
clinical practices (“GCPs”).

After  evaluating  the  marketing  application  and  all  related  information,  including  the  advisory  committee
recommendation, if any, and inspection and remote regulatory inspection reports regarding the manufacturing facilities and
clinical  trial  sites,  the  FDA  may  issue  an  approval  letter  or  a  complete  response  letter.  An  approval  letter  authorizes
commercial marketing of the biological product with specific prescribing information for specific indications. A complete
response  letter  generally  outlines  the  deficiencies  in  the  submission  and  may  require  substantial  additional  testing  or
information  for  the  FDA  to  reconsider  the  application.  Even  with  submission  of  this  additional  information,  the  FDA
ultimately  may  decide  that  the  application  does  not  satisfy  the  regulatory  criteria  for  approval.  If  and  when  those
deficiencies have been addressed to the FDA’s satisfaction in a resubmission of the BLA, the FDA will issue an approval
letter. Many drug applications receive complete response letters from the FDA during their first cycle of FDA review.

If  the  FDA  approves  a  product,  it  may  limit  the  approved  indications  for  use  of  the  product;  require  that
contraindications,  warnings,  or  precautions  be  included  in  the  product  labeling,  including  boxed  warnings;  require  that
post-approval studies, including Phase 4 clinical trials, be conducted to further assess a biologic’s efficacy and safety after
approval;  or  require  testing  and  surveillance  programs  to  monitor  the  product  after  commercialization.  The  FDA  may
prevent or limit further marketing of a product based on the results of post-market studies or surveillance programs. The
FDA may also not approve label statements that are necessary for successful commercialization and marketing.

In addition to the above conditions of approval, the FDA also may require submission of a REMS to ensure that
the  benefits  of  the  product  candidate  outweigh  the  risks.  The  REMS  plan  could  include  medication  guides,  physician
communication plans, and elements to assure safe use, such as restricted distribution methods, patient registries, or other
risk minimization tools. An assessment of the REMS must also be conducted at set intervals. Following product approval, a
REMS may also be required by the FDA if new safety information is discovered, and the FDA determines that a REMS is
necessary to ensure that the benefits of the product outweigh the risks. In guidance, FDA stated that during the review of a
BLA  for  a  gene  therapy,  it  will  assess  whether  a  REMS  is  necessary.  Several  gene  therapy  products  that  have  been
approved  by  FDA  have  required  substantial  REMS,  which  included  requirements  for  dispensing  hospital  and  clinic
certification, training, adverse event reporting, documentation, and audits and monitoring conducted by the sponsor, among
other  conditions.  REMS,  such  as  these,  can  be  expensive  and  burdensome  to  implement,  and  burdensome  for  hospitals,
clinics, and healthcare providers to comply with.

Biosimilars and Exclusivity

The Biologics Price Competition and Innovation Act of 2009 (“BPCIA”) which amended the PHSA authorized
the  FDA  to  approve  biosimilars  under  Section  351(k)  of  the  PHSA.  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.  For  the  FDA  to  approve  a  biosimilar  product,  it  must  find  that  it  is  highly  similar  to  the
reference  product  notwithstanding  minor  differences  in  clinically  inactive  components  and  that  there  are  no  clinically
meaningful  differences  between  the  reference  product  and  proposed  biosimilar  product  in  safety,  purity  or  potency.  A
finding of interchangeability requires that a product is determined to be biosimilar to the reference product, and that the
product  can  be  expected  to  produce  the  same  clinical  results  as  the  reference  product  and,  for  products  administered
multiple times, 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.

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An application for a biosimilar product may not be submitted to the FDA until four years following approval of
the  reference  product,  and  it  may  not  be  approved  until  12  years  following  approval  of  the  reference  product.  These
exclusivity  provisions  only  apply  to  biosimilar  companies  and  not  companies  that  rely  on  their  own  data  and  file  a  full
BLA.  Moreover,  this  exclusivity  is  not  without  limitation.  Certain  changes  and  supplements  to  an  approved  BLA,  and
subsequent applications filed by the same sponsor, manufacturer, licensor, predecessor in interest, or other related entity do
not qualify for the twelve-year exclusivity period. Further, the twelve-year exclusivity period in the U.S. for biologics has
been controversial and may be shortened in the future.

The  PHSA  also  includes  provisions  to  protect  reference  products  that  have  patent  protection.  The  biosimilar
product  sponsor  and  reference  product  sponsor  may  exchange  certain  patent  and  product  information  for  the  purpose  of
determining  whether  there  should  be  a  legal  patent  challenge.  Based  on  the  outcome  of  negotiations  surrounding  the
exchanged  information,  the  reference  product  sponsor  may  bring  a  patent  infringement  suit  and  injunction  proceedings
against  the  biosimilar  product  sponsor.  The  biosimilar  applicant  may  also  be  able  to  bring  an  action  for  declaratory
judgment concerning the patent.

The  FDA  maintains  a  list  of  approved  biological  products,  which  is  commonly  referred  to  as  the  Purple  Book.
This list includes product names, the date of licensure, and any periods of regulatory exclusivity. Following the exchange
of  patent  information  between  the  biosimilar  and  reference  product  sponsor,  the  reference  product  sponsor  must  also
provide the exchanged patent information and patent expiry dates to the FDA. The FDA then publishes this information in
the Purple Book.

To  increase  competition  in  the  drug  and  biologic  product  marketplace,  Congress,  the  executive  branch,  and  the
FDA have taken certain legislative and regulatory steps. By example, the FDA finalized a guidance to facilitate biologic
product  importation.  Moreover,  the  2020  Further  Consolidated  Appropriations  Act  included  provisions  requiring  that
sponsors  of  approved  biologic  products,  including  those  subject  to  REMS,  provide  samples  of  the  approved  products  to
persons  developing  biosimilar  products  within  specified  timeframes,  in  sufficient  quantities,  and  on  commercially
reasonable market-based terms. Failure to do so can subject the approved product sponsor to civil actions, penalties, and
responsibility for attorney’s fees and costs of the civil action. This same bill also includes provisions with respect to shared
and separate REMS programs.

Orphan Drug Exclusivity

Under  the  Orphan  Drug  Act  of  1983,  the  FDA  may  designate  a  biological  product  as  an  orphan  drug  if  it  is
intended  to  treat  a  rare  disease  or  condition  that  affects  fewer  than  200,000  individuals  in  the  U.S.,  or  more  in  cases  in
which there is no reasonable expectation that the cost of developing and making a biological product available in the U.S.
for treatment of the disease or condition will be recovered from sales of the product. Additionally, sponsors must present a
plausible hypothesis for clinical superiority to obtain orphan drug designation if there is a product already approved by the
FDA that is considered by the FDA to be the same as the already approved product and is intended for the same indication.
This hypothesis must be demonstrated to obtain orphan exclusivity. With respect to gene therapies, the FDA has issued a
specific guidance on how the agency interprets its sameness regulations. Specifically, whether two products are deemed to
be  the  same  by  the  FDA  will  depend  on  the  products’  transgene  expression,  viral  vectors  groups  and  variants,  and
additional product features that may contribute to therapeutic effect. Minor product differences will not, generally, result in
a finding that two products are different and there are some factors that FDA will consider on a case by case basis. Any of
the FDA sameness determinations could impact our ability to receive approval for our product candidates and to obtain or
retain orphan drug exclusivity.

If a product with orphan designation receives the first FDA approval, it may be granted seven years of marketing
exclusivity,  which  means  that  the  FDA  may  not  approve  any  other  applications  for  the  same  product  for  the  same
indication  for  seven  years,  unless  clinical  superiority  is  demonstrated.  Competitors  may  receive  approval  of  different
products for the indication for which the orphan product has exclusivity and may obtain approval for the same product but
for a different indication. Notably, a 2021 judicial decision, Catalyst Pharms., Inc. v. Becerra, challenged and reversed an
FDA  decision  on  the  scope  of  orphan  product  exclusivity  for  the  drug,  Firdapse.  Under  this  decision,  orphan  drug
exclusivity  for  Firdapse  blocked  approval  of  another  company’s  application  for  the  same  drug  for  the  entire  disease  or
condition  for  which  orphan  drug  designation  was  granted,  not  just  the  disease  or  condition  for  which  approval  was
received. In a January 2023 Federal Register notice, however, FDA stated that it intends to continue to apply its regulations
tying  the  scope  of  orphan-drug  exclusivity  to  the  uses  or  indications  for  which  a  drug  is  approved.  The  exact  scope  of
orphan drug exclusivity will likely be an evolving area.

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Pediatric Exclusivity

Under  the  Pediatric  Research  Equity  Act  of  2003,  pediatric  exclusivity  provides  for  the  attachment  of  an
additional six months of marketing protection to the term of any existing regulatory exclusivity in the US, including orphan
exclusivity  and  reference  biologic  exclusivity.  This  six-month  exclusivity  may  be  granted  if  the  FDA  issues  a  written
request to the sponsor for the pediatric study, the sponsor submits a final study report after receipt of the written request
and meets the terms and timelines in the FDA’s written request.

Regenerative Advanced Therapy Designation

The 21st  Century  Cures  Act  became  law  in  December  2016  and  created  a  new  program  under  Section  3033  in
which  the  FDA  has  authority  to  designate  a  product  as  a  regenerative  medicine  advanced  therapy  (“RMAT”).  A  drug  is
eligible  for  a  RMAT  designation  if:  1)  it  is  a  regenerative  medicine  therapy  which  is  a  cell  therapy,  therapeutic  tissue
engineering product, human cell and tissue product, or any combination product using such therapies or products, except
those products already regulated under Section 361 of the PHSA; 2) the drug is intended to treat, modify, reverse, or cure a
serious or life-threatening disease or condition; and 3) preliminary clinical evidence indicates that the drug has the potential
to  address  unmet  medical  needs  for  such  disease  or  condition.  A  RMAT  designation  request  must  be  made  with  the
submission  of  an  IND  or  as  an  amendment  to  an  existing  IND.  FDA  will  determine  if  a  product  is  eligible  for  RMAT
designation within 60 days of submission. Advantages of the RMAT designation include all the benefits of the fast track
and breakthrough therapy designation programs, including early interactions with the FDA. These early interactions may
be used to discuss potential surrogate or intermediate endpoints to support accelerated approval. In 2019 the FDA stated in
guidance that human gene therapies, including genetically modified cells, that lead to a sustained effect on cells or tissues,
may meet the definition of a regenerative therapy.

FDA Regulation of Companion Diagnostics and Other Combination Products

We may seek to develop companion diagnostics for use in identifying patients that we believe will respond to our
gene therapies. Similarly, our product candidates may require delivery devices. A biologic product may be regulated as a
combination product if it is intended for use in conjunction with a medical device, such as a drug delivery device or an in
vitro diagnostic device. For combination products, the biologic and device components must, when used together, be safe
and effective and the product labeling must reflect their combined use. In some cases, the medical device component may
require  a  separate  premarket  submission.  Moreover,  clinical  trial  sponsors  using  investigational  devices  in  their  studies
must comply with FDA’s investigational device exemption regulations. Once approved or cleared, the device component
sponsor (or the combination product sponsor, if both components are covered by one application) must comply with the
remaining  FDA  general  controls,  including  establishment  registration,  device  listing,  device  labeling,  unique  device
identifier, quality system regulation, medical device reporting, and reporting of corrections and removals requirements.

If  the  safety  or  effectiveness  of  a  biologic  product  is  dependent  on  the  results  of  a  diagnostic,  the  FDA  may
require that the in vitro companion diagnostic device and biologic product be contemporaneously approved, with labeling
that describes the use of the two products together. The type of premarket submission required for a companion diagnostic
device will depend on the FDA device classification. A premarket approval (“PMA”), application is required for high risk
devices classified as Class III; a 510(k) premarket notification is required for moderate risk devices classified as Class II A
de novo request may be used for devices not previously classified by the FDA (and hence are automatically Class III) but
are  low  or  moderate  risk  (due  to  the  application  of  special  controls)  and  thus  are  classified  as  Class  II.  and  a  de  novo
request may be used for novel devices not previously classified by the FDA that are low or moderate risk. Except in some
limited  circumstances,  the  FDA  generally  will  not  approve  a  biologic  that  is  dependent  upon  the  use  of  a  companion
diagnostic device if the device is not contemporaneously FDA-approved or -cleared.

Post-approval Requirements

Any products manufactured or distributed pursuant to the FDA approvals are subject to pervasive and continuing
regulation  by  the  FDA,  including,  among  other  things,  requirements  related  to  manufacturing,  recordkeeping,  and
reporting, including adverse experience reporting, deviation reporting, shortage reporting, and periodic reporting, product
sampling and distribution, advertising, marketing, promotion, certain electronic records and signatures, and post-approval
obligations imposed as a condition of approval, such as Phase 4 clinical trials, REMS, and surveillance to assess safety
and effectiveness after commercialization.

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After approval, most changes to the approved product, such as adding new indications or other labeling claims,
are  subject  to  prior  FDA  review  and  approval.  There  also  are  continuing  annual  program  user  fee  requirements  for
approved products, excluding orphan products provided that certain criteria are met. Regulatory authorities may withdraw
product  approvals,  require  label  modifications,  or  request  product  recalls,  among  other  actions,  if  a  company  fails  to
comply  with  regulatory  standards,  if  it  encounters  problems  following  initial  marketing,  or  if  previously  unrecognized
problems are subsequently discovered.

Changes to the manufacturing process are strictly regulated and often require prior FDA approval or notification
before being implemented. FDA regulations also require investigation and correction of any deviations from cGMP and
specifications and impose reporting and documentation requirements upon the sponsor and any third-party manufacturers
that  the  sponsor  may  decide  to  use.  Accordingly,  manufacturers  must  continue  to  expend  time,  money,  and  effort  in
production and quality control to maintain cGMP compliance.

The FDA also strictly regulates marketing, labeling, advertising, and promotion of products that are placed on the
market. A company can make only those claims relating to a product that are approved by the FDA. Physicians, in their
independent professional medical judgment, may prescribe legally available products for unapproved indications that are
not  described  in  the  product’s  labeling  and  that  differ  from  those  tested  and  that  have  been  approved  by  the  FDA.
Biopharmaceutical  companies,  however,  are  required  to  promote  their  products  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, including, but not limited to, criminal fines and civil penalties under the FDCA
and False Claims Act, exclusion from participation in federal healthcare programs, mandatory compliance programs under
corporate integrity agreements, suspension and debarment from government procurement and non-procurement programs,
and refusal of orders under existing government contracts.

In  addition,  the  distribution  of  prescription  biopharmaceutical  samples  is  subject  to  the  Prescription  Drug
Marketing Act (the “PDMA”), which regulates the distribution of samples at the federal level. Both the PDMA and state
laws limit the distribution of prescription biopharmaceutical products. Certain reporting related to samples is also required
under federal and state laws and regulations, some of which impose requirements to ensure accountability in distribution.
Free  trial  or  starter  prescriptions  provided  through  pharmacies  are  also  subject  to  regulations  under  the  Medicaid  Drug
Rebate Program and potential liability under anti-kickback and false claims laws.

Moreover,  the  enacted  Drug  Quality  and  Security  Act  (“DQSA”),  imposes  obligations  on  sponsors  of
biopharmaceutical products related to product tracking and tracing. Among the requirements of this legislation, sponsors
are required to provide certain information regarding the products to individuals and entities to which product ownership is
transferred, are required to label products with a product identifier, and are required to keep certain records regarding the
product. The transfer of information to subsequent product owners by sponsors is also required to be done electronically
and will be required to allow interoperable electronic product tracing at the package level by November 2023. Sponsors
must  also  verify  that  purchasers  of  the  sponsors’  products  are  appropriately  licensed.  Further,  under  this  legislation,
manufactures  have  product  verification  responsibilities,  as  well  as  investigation,  quarantine,  disposition,  and  notification
responsibilities  related  to  counterfeit,  diverted,  stolen,  and  intentionally  adulterated  products  that  would  result  in  serious
adverse health consequences or death to humans, as well as products that are the subject of fraudulent transactions or which
are otherwise unfit for distribution such that they would be reasonably likely to result in serious health consequences or
death.  Similar  requirements  additionally  are  also  imposed  through  this  legislation  on  other  companies  within  the
biopharmaceutical  product  supply  chain,  such  as  distributors  and  dispensers,  as  well  as  certain  sponsor  licensees  and
affiliates.

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 before or after
approval, may result in significant regulatory actions. Such actions may include refusal to approve pending applications,
license or approval suspension or revocation, imposition of a clinical hold or termination of clinical trials, warning letters,
untitled  letters,  cyber  letters,  modification  of  promotional  materials  or  labeling,  provision  of  corrective  information,
imposition  of  post-market  requirements  including  the  need  for  additional  testing,  imposition  of  distribution  or  other
restrictions  under  a  REMS,  product  recalls,  product  seizures  or  detentions,  refusal  to  allow  imports  or  exports,  total  or
partial  suspension  of  production  or  distribution,  FDA  debarment,  injunctions,  consent  decrees,  corporate  integrity
agreements, suspension and debarment from government procurement and non-procurement programs, refusal of orders
under  existing  government  contracts,  exclusion  from  participation  in  federal  and  state  healthcare  programs,  restitution,
disgorgement, civil penalties, criminal prosecution, including fines and imprisonment, and adverse publicity, among other
adverse consequences.

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Additional controls for biologics

To help reduce the increased risk of the introduction of adventitious agents, the PHSA emphasizes the importance
of manufacturing controls for products whose attributes cannot be precisely defined. The PHSA also provides authority to
the FDA to immediately suspend licenses in situations where there exists a danger to public health, to prepare or procure
products  in  the  event  of  shortages  and  critical  public  health  needs,  and  to  authorize  the  creation  and  enforcement  of
regulations to prevent the introduction or spread of communicable diseases in the U.S. and between states.

After a BLA is approved, the product may also be subject to official lot release as a condition of approval. As part
of the manufacturing process, the manufacturer is required to perform certain tests on each lot of the product before it is
released for distribution. If the product is subject to official release by the FDA, the manufacturer submits samples of each
lot of product to the FDA together with a release protocol showing the results of all the manufacturer’s tests performed on
the  lot.  The  FDA  may  also  perform  certain  confirmatory  tests  on  lots  of  some  products  before  releasing  the  lots  for
distribution by the manufacturer.

In addition, the FDA conducts laboratory research related to the regulatory standards on the safety, purity,

potency, and effectiveness of biological products.

Patent Term Restoration

If approved, biologic products may also be eligible for periods of U.S. patent term restoration. If granted, patent
term restoration extends the patent life of a single unexpired patent, that has not previously been extended, for a maximum
of five years. The total patent life of the product with the extension also cannot exceed fourteen years from the product’s
approval date. Subject to the prior limitations, the period of the extension is calculated by adding half of the time from the
effective date of an IND to the initial submission of a marketing application, and all the time between the submission of the
marketing application and its approval. This period may also be reduced by any time that the applicant did not act with due
diligence.

Anti-Kickback Provisions and other Fraud and Abuse Requirements

The federal Anti-Kickback Statute is a criminal statute that prohibits, among other things, knowingly and willfully
offering, paying, soliciting, or receiving remuneration directly or indirectly, overtly or covertly, in cash or in kind, to induce
or in return for purchasing, leasing, ordering, or arranging for the purchase, lease or order of any healthcare item or service
reimbursable  under  Medicare,  Medicaid  or  other  federally  financed  healthcare  programs,  in  whole  or  in  part.  The  term
“remuneration” has been interpreted broadly to include anything of value. The Anti-Kickback Statute has been interpreted
to apply to arrangements between biopharmaceutical industry members on the one hand and prescribers, purchasers, and
formulary managers on the other. The Beneficiary Inducement Civil Monetary Penalties Law imposes similar restrictions
on  interactions  between  the  biopharmaceutical  industry  and  federal  healthcare  program  beneficiaries.  There  are  certain
statutory  exceptions  and  regulatory  safe  harbors  to  the  Anti-Kickback  Statute  protecting  some  common  activities  from
prosecution.  The  exceptions  and  safe  harbors  are  drawn  narrowly,  and  practices  that  involve  remuneration  that  may  be
alleged to be intended to induce or reward prescribing, purchases, or recommendations may be subject to scrutiny if they
do  not  qualify  for  an  exception  or  safe  harbor.  Failure  to  meet  all  the  requirements  of  a  particular  applicable  statutory
exception or regulatory safe harbor does not make the conduct per se illegal under the Anti-Kickback Statute. Instead, the
legality  of  the  arrangement  will  be  evaluated  on  a  case-by-case  basis  based  on  a  cumulative  review  of  all  its  facts  and
circumstances.

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Several courts have interpreted the statute’s intent requirement to mean that if any one purpose of an arrangement
involving  remuneration  is  to  induce  or  reward  referrals  of  federal  healthcare  program  business,  including  purchases  of
products  paid  by  federal  healthcare  programs,  the  statute  has  been  violated.  The  Patient  Protection  and  Affordable  Care
Act,  of  2010,  as  amended,  (the  “ACA”)  modified  the  intent  requirement  under  the  Anti-Kickback  Statute  to  a  stricter
standard, such that a person or entity no longer needs to have actual knowledge of the statute or specific intent to violate it
to have committed a violation. In addition, the ACA also provided that a violation of the federal Anti-Kickback Statute is
grounds for the government or a whistleblower to assert that a claim for reimbursement submitted to a federal healthcare
program for payment of items or services resulting from such violation constitutes a per se false or fraudulent claim for
purposes  of  the  federal  civil  False  Claims  Act.  The  Department  of  Health  and  Human  Services  (“HHS”)  recently
promulgated a regulation with respect to the safe harbors that is effective in two phases. First, the regulation excludes from
the definition of “remuneration” limited categories of (a) Pharmacy Benefit Manager (“PBM”) rebates or other reductions
in price to a plan sponsor under Medicare Part D or a Medicaid Managed Care Organization plan reflected in point-of-sale
reductions in price and (b) PBM service fees. Second, the regulation expressly provides that rebates to plan sponsors under
Medicare  Part  D,  either  directly  to  the  plan  sponsor  under  Medicare  Part  D  or  indirectly  through  a  PBM,  will  not  be
protected under the Anti-Kickback Statute discount safe harbor. Recent legislation delayed implementation of this portion
of the rule until January 1, 2026, and further proposed legislation would permanently prohibit implementation of the rule
beginning in 2026.

The federal civil False Claims Act prohibits any person from knowingly presenting, or causing to be presented, a
false or fraudulent claim for payment to, or approval by, the federal government, knowingly making, using, or causing to
be made or used a false record or statement material to a false or fraudulent claim to the federal government, or avoiding,
decreasing, or concealing an obligation to pay money to the federal government. A claim includes “any request or demand”
for money or property presented to the U.S. government. The civil False Claims Act has been used to assert liability on the
basis  of  kickbacks  and  other  improper  referrals,  improperly  reported  government  pricing  metrics  such  as  Best  Price  or
Average Manufacturer Price, improper use of Medicare provider or supplier numbers when detailing a provider of services,
improper  promotion  of  off-label  uses  not  expressly  approved  by  the  FDA  in  a  product’s  label,  and  allegations  as  to
misrepresentations with respect to products, contract requirements, and services rendered. In addition, private payers have
been filing follow-on lawsuits alleging fraudulent misrepresentation, although establishing liability and damages in these
cases  is  more  difficult  than  under  the  FCA.  Intent  to  deceive  is  not  required  to  establish  liability  under  the  civil  False
Claims Act. Rather, a claim may be false for deliberate ignorance of the truth or falsity of the information provided or for
acts in reckless disregard of the truth or falsity of that information. Civil False Claims Act actions may be brought by the
government  or  may  be  brought  by  private  individuals  on  behalf  of  the  government,  called  “qui  tam”  actions.  If  the
government decides to intervene in a qui tam action and prevails in the lawsuit, the individual will share in the proceeds
from any damages, penalties or settlement funds. If the government declines to intervene, the individual may pursue the
case  alone.  The  civil  FCA  provides  for  treble  damages  and  a  civil  penalty  for  each  false  claim,  such  as  an  invoice  or
pharmacy  claim  for  reimbursement,  which  can  aggregate  into  tens  and  even  hundreds  of  millions  of  dollars.  For  these
reasons,  since  2004,  False  Claims  Act  lawsuits  against  biopharmaceutical  companies  have  increased  significantly  in
volume and breadth, leading to several substantial civil and criminal settlements, as much as $3.0 billion, regarding certain
sales practices and promoting off label uses. Civil False Claims Act liability may further be imposed for known Medicare
or Medicaid overpayments, for example, overpayments caused by understated rebate amounts, that are not refunded within
60 days of discovering the overpayment, even if the overpayment was not caused by a false or fraudulent act. In addition,
civil judgment for violating the FCA may result in exclusion from federal healthcare programs, suspension and debarment
from government procurement and non-procurement programs, and refusal of orders under existing government contracts.
The  majority  of  states  also  have  statutes  similar  to  the  federal  Anti-Kickback  Statute  and  civil  False  Claims  Act,  which
apply to items and services reimbursed under Medicaid and other state programs, or, in several states, apply regardless of
the payer.

The  government  may  further  prosecute  conduct  constituting  a  false  claim  under  the  criminal  False  Claims  Act.
The criminal False Claims Act prohibits the making or presenting of a claim to the government knowing such claim to be
false, fictitious, or fraudulent and, unlike the civil False Claims Act, requires proof of intent to submit a false claim.

The Civil Monetary Penalties Law is another potential statute under which biopharmaceutical companies may be
subject to enforcement. Among other things, the civil monetary penalties statue imposes fines against any person who is
determined to have knowingly presented, or caused to be presented, claims to a federal healthcare program that the person
knows, or should know, is for an item or service that was not provided as claimed or is false or fraudulent.

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Payment  or  reimbursement  of  prescription  therapeutics  by  Medicaid  or  Medicare  requires  sponsors  to  submit
certified pricing information to Centers of Medicare and Medicaid Services (“CMS”). The Medicaid Drug Rebate statute
requires sponsors to calculate and report price points, which are used to determine Medicaid manufacturer rebate payments
shared between the states and the federal government and Medicaid payment rates for certain therapeutics. For therapeutics
paid under Medicare Part B, sponsors must also calculate and report their Average Sales Price, which is used to determine
the  Medicare  Part  B  payment  rate.  In  addition,  therapeutics  covered  by  Medicaid  are  subject  to  an  additional  inflation
penalty  which  can  substantially  increase  rebate  payments.  For  certain  products,  including  those  approved  under  a  BLA
(including  biosimilars),  the  Veterans  Health  Care  Act  (the  “VHCA”)  requires  sponsors  to  calculate  and  report  to  the
Department of Veterans Affairs (“VA”) a different price called the Non-Federal Average Manufacturer Price, which is used
to determine the maximum price that can be charged to certain federal agencies, referred to as the Federal Ceiling Price
(“FCP”).  Like  the  Medicaid  rebate  amount,  the  FCP  includes  an  inflation  penalty.  A  Department  of  Defense  regulation
requires  sponsors  to  provide  this  discount  on  therapeutics  dispensed  by  retail  pharmacies  when  paid  by  the  TRICARE
Program.  All  these  price  reporting  requirements  create  risk  of  submitting  false  information  to  the  government,  potential
FCA liability and exclusion from certain of these programs.

The  VHCA  also  requires  sponsors  of  covered  therapeutics  participating  in  the  Medicaid  program  to  enter  into
Federal Supply Schedule contracts with the VA through which their covered therapeutics must be sold to certain federal
agencies  at  FCP.  This  necessitates  compliance  with  applicable  federal  procurement  laws  and  regulations,  including
submission  of  commercial  sales  and  pricing  information,  and  subjects  companies  to  contractual  remedies  as  well  as
administrative, civil, and criminal sanctions. In addition, the VHCA requires sponsors participating in Medicaid to agree to
provide different mandatory discounts to certain Public Health Service grantees and other safety net hospitals and clinics
under  the  340B  program  based  on  the  sponsor’s  reported  Medicaid  pricing  information.  The  340B  program  has  its  own
regulatory  authority  to  impose  sanctions  for  non-compliance,  adjudicate  overcharge  claims  against  sponsors  by  the
purchasing entities, and impose civil monetary penalties for instances of overcharging.

The federal Health Insurance Portability and Accountability Act of 1996, (“HIPAA”), also created federal criminal
statutes  that  prohibit,  among  other  actions,  knowingly  and  willfully  executing,  or  attempting  to  execute,  a  scheme  to
defraud or to obtain, by means of false or fraudulent pretenses, representations or promises, any of the money or property
owned by, or under the custody or control of, a healthcare benefit program, regardless of whether the payor is public or
private, in connection with the delivery or payment for healthcare benefits, knowingly and willfully embezzling or stealing
from a healthcare benefit program, willfully obstructing a criminal investigation of a healthcare offense and knowingly and
willfully  falsifying,  concealing,  or  covering  up  by  any  trick  or  device  a  material  fact  or  making  any  materially  false
statements in connection with the delivery of, or payment for, healthcare benefits, items, or services relating to healthcare
matters. Additionally, the ACA amended the intent requirement of certain of these criminal statutes under HIPAA so that a
person  or  entity  no  longer  needs  to  have  actual  knowledge  of  the  statute,  or  the  specific  intent  to  violate  it,  to  have
committed a violation.

In  addition,  as  part  of  the  ACA,  the  federal  government  enacted  the  Physician  Payment  Sunshine  Act.
Manufacturers of drugs, biologics and devices for which payment is available under Medicare, Medicaid, or the Children’s
Health  Insurance  Program  (with  certain  exceptions)  are  required  to  annually  report  to  CMS  certain  payments  and  other
transfers  of  value  made  to  or  at  the  request  of  covered  recipients,  which  are  physicians  (as  defined  under  the  Social
Security Act), physician assistants, nurse practitioners, clinical nurse specialists, certified registered nurse anesthetists and
certified  nurse  midwifes  licensed  in  the  U.S.  and  U.S.  teaching  hospitals,  as  well  as  ownership  and  investment  interests
held  by  physicians  and  members  of  their  immediate  family.  Payments  made  to  principal  investigators  and  research
institutions at teaching hospitals for clinical trials are also included within this law. Reported information is made publicly
available by CMS. Failure to submit required information may result in civil monetary penalties. If not preempted by this
federal  law,  several  states  currently  also  require  reporting  of  marketing  and  promotion  expenses,  as  well  as  gifts  and
payments  to  healthcare  professionals  and  organizations.  State  legislation  may  also  prohibit  gifts  and  various  other
marketing related activities or require the public posting of information. Certain states also require companies to implement
compliance programs.

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Further, we may be subject to data privacy and security regulation by both the federal government and the states in
which  we  conduct  our  business.  HIPAA,  as  amended  by  the  Health  Information  Technology  for  Economic  and  Clinical
Health  Act,  (“HITECH  Act”),  and  their  respective  implementing  regulations  impose  certain  requirements  on  covered
entities relating to the privacy, security, and transmission of certain individually identifiable health information known as
protected  health  information.  Among  other  things,  the  HITECH  Act,  and  its  implementing  regulations,  made  HIPAA’s
security  standards  and  certain  privacy  standards  directly  applicable  to  business  associates,  defined  as  persons  or
organizations,  other  than  members  of  a  covered  entity’s  workforce,  that  create,  receive,  maintain,  or  transmit  protected
health  information  on  behalf  of  a  covered  entity  for  a  function  or  activity  regulated  by  HIPAA.  The  HITECH  Act  also
strengthened  the  civil  and  criminal  sanctions  that  may  be  imposed  against  covered  entities,  business  associates,  and
individuals, and gave state attorneys general new authority to file civil actions for damages or injunctions in federal courts
to  enforce  the  federal  HIPAA  laws  and  seek  attorneys’  fees  and  costs  associated  with  pursuing  federal  civil  actions.  In
addition, other federal and state laws, such as the California Consumer Privacy Act, may govern the privacy and security of
health and other information in certain circumstances, many of which differ from each other in significant ways and may
not be preempted by HIPAA, thus complicating compliance efforts.

Many states have also adopted laws similar to each of the above federal laws, which may be broader in scope and
apply  to  items  or  services  reimbursed  by  any  third-party  payor,  including  commercial  insurers.  Certain  state  laws  also
regulate sponsors’ use of prescriber-identifiable data. Certain states also require implementation of commercial compliance
programs  and  compliance  with  the  pharmaceutical  industry’s  voluntary  compliance  guidelines  and  the  applicable
compliance program guidance promulgated by the federal government, or otherwise restrict payments or the provision of
other items of value that may be made to healthcare providers and other potential referral sources; impose restrictions on
marketing practices; or require sponsors to track and report information related to payments, gifts, and other items of value
to  physicians  and  other  healthcare  providers  and  entities.  Recently,  states  have  enacted  or  are  considering  legislation
intended to make drug prices more transparent and deter significant price increases that impose reporting requirements on
biopharmaceutical  companies.  These  laws  may  affect  our  future  sales,  marketing,  and  other  promotional  activities  by
imposing administrative and compliance burdens. Such laws also typically impose significant civil monetary penalties for
each instance of reporting noncompliance that can quickly aggregate into the tens of millions of dollars.

If our operations are found to be in violation of any of the laws or regulations described above or any other laws
that apply to us, we may be subject to penalties or other enforcement actions, including significant civil monetary penalties,
damages,  criminal  fines,  disgorgement,  imprisonment,  exclusion  from  participation  in  government  healthcare  programs,
corporate integrity agreements, suspension and debarment from government procurement and non-procurement programs,
refusal of orders under existing government contracts, reputational harm, diminished profits and future earnings, and the
curtailment or restructuring of our operations, any of which could adversely affect our business.

U.S. Foreign Corrupt Practices Act

The U.S. Foreign Corrupt Practices Act, to which we are subject, imposes certain recordkeeping requirements and
prohibits  corporations  and  individuals  from  engaging  in  certain  activities  to  obtain  or  retain  business  or  to  influence  a
person working in an official capacity. It is illegal to pay, offer to pay or authorize the payment of anything of value to any
foreign  government  official,  government  staff  member,  political  party,  or  political  candidate  in  an  attempt  to  obtain  or
retain business or to otherwise influence a person working in an official capacity.

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Coverage, Pricing and Reimbursement

The  containment  of  healthcare  costs  has  become  a  priority  of  federal,  state,  and  foreign  governments,  and  the
prices  of  drugs  have  been  a  focus  in  this  effort.  Third-party  payers  and  independent  non-profit  healthcare  research
organizations such as the Institute for Clinical and Economic Review are also increasingly challenging the prices charged
for medical products and services and examining the medical necessity, budget-impact, and cost-effectiveness of medical
products and services, in addition to their safety and efficacy. If these third-party payers do not consider a product to be
cost-effective  compared  to  other  available  therapies  and/or  the  standard  of  care,  they  may  not  cover  the  product  after
approval as a benefit under their plans or, if they do, measures including prior authorization and step-throughs could be
required, manufacturer rebates may be negotiated or required and/or the level of payment may not be sufficient to allow a
company  to  sell  its  products  at  a  profit.  The  U.S.  federal  and  state  governments  and  foreign  governments  have  shown
significant  interest  in  implementing  cost  containment  programs  to  limit  the  growth  of  government-paid  healthcare  costs,
including price controls, restrictions on coverage and reimbursement and requirements for substitution of generic products
for  branded  prescription  drugs.  In  this  regard,  for  example,  on  November  27,  2020,  CMS  issued  an  interim  final  rule
implementing a Most Favored Nation payment model under which reimbursement for certain Medicare Part B drugs and
biologicals will be based on a price that reflects the lowest per capital Gross Domestic Product-adjusted (“GDP-adjusted”)
price of any non-U.S. member country of the Organization for Economic Co-operation and Development (“OECD”) with a
GDP  per  capita  that  is  at  least  sixty  percent  of  the  U.S.  GDP  per  capita.  While  this  rule  now  has  been  rescinded,
government  negotiation  of  certain  Medicare  drug  pricing  continues  to  be  the  focus  of  recent  proposed  legislation.  The
Budget  Control  Act  of  2011,  among  other  things,  created  measures  for  spending  reductions  by  Congress.  Failure  of  the
Joint Select Committee on Deficit Reduction to reach required deficit reduction goals triggered the legislation’s automatic
reduction to several government programs. This includes aggregate reductions of Medicare payments to providers up to 2%
per  fiscal  year.  While  President  Biden  previously  signed  legislation  to  eliminate  this  reduction  through  the  end  of  2021,
recent  legislation  will  restart  the  reductions,  which  will  thereafter  remain  in  effect  through  2031  unless  additional
congressional action is taken. Adoption of additional healthcare reform controls and measures and tightening of restrictive
policies in jurisdictions with existing controls and measures, could limit payments for pharmaceuticals.

As a result, the marketability of any product which receives regulatory approval for commercial sale may suffer if
the  government  and  third-party  payers  choose  to  provide  low  coverage  and  reimbursement.  In  addition,  an  increasing
emphasis on managed care in the U.S. has increased and will continue to increase the pressure on drug pricing. Decisions
regarding whether to cover any of our products, the extent of coverage and amount of reimbursement to be provided are
made on a plan-by-plan basis. Further, no uniform policy for coverage and reimbursement exists in the U.S., and coverage
and  reimbursement  can  differ  significantly  from  payor  to  payor.  Coverage  policies,  third  party  reimbursement  rates  and
drug  pricing  regulation  may  change  at  any  time.  In  particular,  the  ACA  contains  provisions  that  may  reduce  the
profitability of drug products, including, for example, increased rebates for drugs sold to Medicaid programs, extension of
Medicaid  rebates  to  Medicaid  managed  care  plans,  mandatory  discounts  for  certain  Medicare  Part  D  beneficiaries  and
annual fees based on pharmaceutical companies’ share of sales to federal healthcare programs. Multiple other current and
proposed legislative and regulatory efforts require and likely will in the future require payment of increased manufacturer
rebates and implement mechanisms to reduce drug prices. Even if favorable coverage and reimbursement status is attained
for one or more products that receive regulatory approval, less favorable coverage policies and reimbursement rates may be
implemented in the future.

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Regulation in the European Union

Product  development,  the  regulatory  approval  process  and  safety  monitoring  of  medicinal  products  and  their
manufacturers  in  the  European  Union  proceed  broadly  in  the  same  way  as  they  do  in  the  U.S..  Therefore,  many  of  the
issues discussed above apply similarly in the context of the European Union. In addition, drugs are subject to the extensive
price  and  reimbursement  regulations  of  the  various  EU  member  states.  The  Clinical  Trial  Regulation  EU  536/2014
(“CTR”), which replaced the Clinical Trials Directive 2001/20/EC, as amended (“CTD”), on January 31, 2022, provides a
system  for  the  approval  of  clinical  trials  in  the  European  Union.  The  CTR  is  directly  applicable  in  all  member  states
without the need for national implementation. Whilst, for trials conducted in only one country, approval has to be obtained
from the competent national authority of an EU member state in which the clinical trial is to be conducted before cross-
border trials within the EU, it is possible to make a single harmonized electronic submission and have a single assessment
process  for  clinical  trials  conducted  in  multiple  member  states.  Furthermore,  a  clinical  trial  may  only  be  started  after  a
competent  ethics  committee  has  issued  a  favorable  opinion  on  the  Clinical  Trial  Application  (“CTA”),  which  must  be
supported  by  an  investigational  medicinal  product  dossier  with  supporting  information  prescribed  by  the  CTD  and
corresponding  national  laws  of  the  member  states  and  further  detailed  in  applicable  guidance  documents.  In  the  case  of
Advanced  Therapy  Investigational  Medical  Products  (“ATIMPs”)  consisting  of  or  containing  Genetically  Modified
Organisms  (“GMOs”),  as  is  the  case  for  uniQure’s  products,  an  additional  approval  for  the  environmental  and  biosafety
aspects of the use and release of the GMO is required by the GMO competent authorities and GMO directives have been
implemented  in  different  ways  by  Member  States;  either  following  the  directive  for  “Contained  use”  (Directive
2009/41/EC)  or  “deliberate  release”  (Directive  2001/18/EC).  As  a  consequence,  in  some  EU  member  states  the  GMO
application must be approved before the CTA is submitted, in some after approval of the CTA, and in some, in parallel.

The sponsor of a clinical trial, or its legal representative, must be based in the European Economic Area (“EEA”).
European regulators and ethics committees also require the submission of adverse event reports during a study and a copy
of the final study report. Under the CTR, member states may dispense with the requirement for a legal representative for a
non-EU resident sponsor provided there is a contact person based in the EEA.

Under  the  CTR,  the  introduction  of  a  new  databased  called  the  Clinical  Trial  Information  System  (“CTIS”),
requires sponsors to upload and submit all data, including initial clinical trial application data and documentation, to the
CTIS,  with  such  data  being  publicly  available,  with  few  exceptions.  This  means  data  transparency  throughout  the
development process with the onus on sponsors to protect patient confidentiality at the point of submission.

Marketing approval

Marketing  approvals  under  the  European  Union  regulatory  system  may  be  obtained  through  a  centralized  or
decentralized procedure. The centralized procedure results in the grant of a single marketing authorization that is valid for
all 27 EU member states. Pursuant to Regulation (EC) No 726/2004, as amended, the centralized procedure is mandatory
for drugs developed by means of specified biotechnological processes, and advanced therapy medicinal products as defined
in  Regulation  (EC)  No  1394/2007,  as  amended.  Drugs  for  human  use  containing  a  new  active  substance  for  which  the
therapeutic  indication  is  the  treatment  of  specified  diseases,  including  but  not  limited  to  acquired  immune  deficiency
syndrome, neurodegenerative disorders, auto-immune diseases and other immune dysfunctions, as well as drugs designated
as  orphan  drugs  pursuant  to  Regulation  (EC)  No  141/2000,  as  amended,  also  fall  within  the  mandatory  scope  of  the
centralized  procedure.  Because  of  our  focus  on  gene  therapies,  which  fall  within  the  category  of  advanced  therapy
medicinal products (“ATMPs”) and orphan indications, our products and product candidates will need to go through the
centralized procedure.

In the marketing authorization application (“MAA”) the applicant must properly and sufficiently demonstrate the
quality, safety, and efficacy of the drug. Guidance on the factors that the EMA will consider in relation to the development
and  evaluation  of  ATMPs  have  been  issued  and  include,  among  other  things,  the  nonclinical  studies  required  to
characterize  ATMPs;  the  manufacturing  and  control  information  that  should  be  submitted  in  a  MAA;  and  post-approval
measures  required  to  monitor  patients  and  evaluate  the  long-term  efficacy  and  potential  adverse  reactions  of  ATMPs.
Although these guidelines are not legally binding, we believe that our compliance will effectively be necessary to gain and
maintain approval for any of our product candidates. The maximum timeframe for the evaluation of an MAA under the
centralized procedure is 210 days after receipt of a valid application subject to clock stops during which the applicant deals
with EMA questions.

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Market access can be expedited through the grant of conditional authorization for a medicine that may fulfil unmet
needs which may be granted provided that the benefit-risk balance of the product is positive. The benefit-risk balance is
likely  to  be  positive  if  the  applicant  can  provide  comprehensive  data  and  the  benefit  to  public  health  of  the  medicinal
product's  immediate  availability  on  the  market  outweighs  the  risks  due  to  need  for  further  data.  Such  authorizations  are
valid for one year and can be renewed annually. The holder will be required to complete specific obligations (ongoing or
new  studies,  and  in  some  cases  additional  activities)  with  a  view  to  providing  comprehensive  data  confirming  that  the
benefit-risk balance is positive. Once comprehensive data on the product have been obtained, the marketing authorization
may be converted into a standard marketing authorization (not subject to specific obligations). Initially, this is valid for 5
years, but can be renewed for unlimited validity. Applicants for conditional authorizations can benefit from early dialogue
with  EMA  through  scientific  advice  or  protocol  assistance  and  discuss  their  development  plan  well  in  advance  of  the
submission of a marketing-authorization application. Other stakeholders (e.g., health technology assessment bodies) can be
included.

In addition, the priority medicines (“PRIME”) scheme for medicines that may offer a major therapeutic advantage
over existing treatments, or benefit patients without treatment options based on early clinical data, is intended to support
the development of medicines that target an unmet medical need. This voluntary scheme is based on enhanced interaction
and  early  dialogue  with  developers  of  promising  medicines,  to  optimize  development  plans  and  speed  up  evaluation  so
these medicines can reach patients earlier. Early dialogue and scientific advice also ensure that patients only participate in
trials designed to provide the data necessary for an application, making the best use of limited resources.

The  European  Union  also  provides  for  a  system  of  regulatory  data  and  market  exclusivity.  According  to
Article 14(11) of Regulation (EC) No 726/2004, as amended, and Article 10 of Directive 2001/83/EC, as amended, upon
receiving  marketing  authorization,  new  chemical  entities  approved  on  the  basis  of  complete  independent  data  package
benefit from eight years of data exclusivity and an additional two years of market exclusivity. Data exclusivity prevents
regulatory  authorities  in  the  European  Union  from  referencing  the  innovator’s  data  to  assess  a  generic  (abbreviated)
application  during  the  eight-year  period  from  when  the  first  placement  of  the  product  on  the  EEA  market.  During  the
additional two-year period of market exclusivity, a generic marketing authorization can be submitted, and the innovator’s
data may be referenced, but no generic medicinal product can be marketed until the expiration of the market exclusivity.
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  their  authorization,  are  held  to  bring  a  significant  clinical  benefit  in  comparison
with existing therapies. Even if a compound is considered to be a new chemical entity and the innovator can gain the period
of data exclusivity, another company nevertheless could also market another version of the drug if such company obtained
marketing authorization based on an MAA with a complete independent data package of pharmaceutical test, preclinical
tests, and clinical trials. The EMA has also issued guidelines for a comprehensive comparability exercise for biosimilars,
and for specific classes of biological products.

Under  Regulation  (EC)  No  141/2000  article  3  as  amended  (Orphan  Drug  Regulation,  (“ODR”))  a  product  can
benefit  from  orphan  drug  status  if  it  is  intended  for  the  diagnosis,  prevention,  or  treatment  of  a  life-threatening  or
chronically debilitating condition affecting not more than five in 10,000 people in the European Community (EC) when the
application is made. The principal benefit of such status is 10 years’ market exclusivity once they are approved preventing
the  subsequent  approval  of  similar  medicines  with  similar  indications  although  this  may  be  reduced  to  six  years  under
certain circumstances including if the product is sufficiently profitable not to justify maintenance of market exclusivity.

Additional rules apply to medicinal products for pediatric use under Regulation (EC) No 1901/2006, as amended.
Potential  incentives  include  a  six-month  extension  of  any  supplementary  protection  certificate  granted  pursuant  to
Regulation (EC) No 469/2009, however not in cases in which the relevant product is designated as an orphan medicinal
product pursuant to the ODR. Instead, medicinal products designated as orphan medicinal product may enjoy an extension
of the ten-year market exclusivity period granted under Regulation (EC) No 141/2000, as amended, to twelve years subject
to the conditions applicable to orphan drugs.

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Manufacturing and promotion

Pursuant  to  Commission  Directive  2003/94/EC  as  transposed  into  the  national  laws  of  the  member  states,  the
manufacturing of investigational medicinal products and approved drugs is subject to a separate manufacturer’s license and
must be conducted in strict compliance with cGMP requirements, which mandate the methods, facilities, and controls used
in manufacturing, processing, and packing of drugs to assure their safety and identity. Manufacturers must have at least one
qualified  person  permanently  and  continuously  at  their  disposal.  The  qualified  person  is  ultimately  responsible  for
certifying that each batch of finished product released onto the market has been manufactured in accordance with cGMP
and  the  specifications  set  out  in  the  marketing  authorization  or  investigational  medicinal  product  dossier.  cGMP
requirements are enforced through mandatory registration of facilities and inspections of those facilities. Failure to comply
with these requirements could interrupt supply and result in delays, unanticipated costs, and lost revenues, and subject the
applicant to potential legal or regulatory action, including but not limited to warning letters, suspension of manufacturing,
seizure of product, injunctive action, or possible civil and criminal penalties.

Advertising

In  the  European  Union,  the  promotion  of  prescription  medicines  is  subject  to  intense  regulation  and  control,
including a prohibition on direct-to-consumer advertising. All medicines advertising must be consistent with the product’s
approved  summary  of  products  characteristics,  factual,  accurate,  balanced  and  not  misleading.  Advertising  of  medicines
pre-approval or off-label is prohibited. Some jurisdictions require that all promotional materials for prescription medicines
be subjected to either prior internal or regulatory review & approval.

Other Regulatory Requirements

A holder of a marketing authorization for a medicinal product is legally obliged to fulfill several obligations by
virtue of its status as a marketing authorization holder (“MAH”). The MAH can delegate the performance of related tasks
to third parties, such as distributors or marketing collaborators, provided that this delegation is appropriately documented
and the MAH maintains legal responsibility and liability.

The obligations of an MAH include:

● Manufacturing and Batch Release. MAHs should guarantee that all manufacturing operations comply with
relevant laws and regulations, applicable good manufacturing practices, with the product specifications and
manufacturing conditions set out in the marketing authorization and that each batch of product is subject to
appropriate release formalities.

● Pharmacovigilance. MAHs  are  obliged  to  establish  and  maintain  a  pharmacovigilance  system,  including  a
qualified  person  responsible  for  oversight,  to  submit  safety  reports  to  the  regulators  and  comply  with  the
good pharmacovigilance practice guidelines adopted by the EMA.

● Advertising and Promotion. MAHs  remain  responsible  for  all  advertising  and  promotion  of  their  products,
including promotional activities by other companies or individuals on their behalf and in some cases, must
conduct internal or regulatory pre-approval of promotional materials.

● Medical Affairs/Scientific Service. MAHs are required to disseminate scientific and medical information on

their medicinal products to healthcare professionals, regulators, and patients.

● Legal  Representation  and  Distributor  Issues.  MAHs  are  responsible  for  regulatory  actions  or  inactions  of

their distributors and agents.

● Preparation,  Filing  and  Maintenance  of  the  Application  and  Subsequent  Marketing  Authorization.  MAHs
must  maintain  appropriate  records,  comply  with  the  marketing  authorization’s  terms  and  conditions,  fulfill
reporting obligations to regulators, submit renewal applications and pay all appropriate fees to the authorities.

We may hold any future marketing authorizations granted for our product candidates in our own name or appoint
an affiliate or a collaborator to hold marketing authorizations on our behalf. Any failure by an MAH to comply with these
obligations  may  result  in  regulatory  action  against  an  MAH  and  ultimately  threaten  our  ability  to  commercialize  our
products.

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Reimbursement

In  the  European  Union,  the  pricing  and  reimbursement  mechanisms  by  private  and  public  health  insurers  vary
largely  by  country  and  even  within  countries.  In  respect  of  the  public  systems,  reimbursement  for  standard  drugs  is
determined  by  guidelines  established  by  the  legislature  or  responsible  national  authority.  Some  jurisdictions  operate
positive  and  negative  list  systems  under  which  products  may  only  be  marketed  once  a  reimbursement  price  has  been
agreed. Other member states allow companies to determine the prices for their medicines but monitor and control company
profits and may limit or restrict reimbursement and can include retrospective rebates to the Government. The downward
pressure on healthcare costs in general, particularly prescription drugs, has become very intense. As a result, increasingly
high barriers are being erected to the entry of new products and some of EU countries require the completion of studies that
compare the cost-effectiveness of a particular product candidate to currently available therapies to obtain reimbursement or
pricing approval. 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  or  agreements  on  reimbursement  may  apply.  Recently,  a  process  has  been  formalized  that  allows
sponsors  to  receive  parallel  advice  from  EMA  and  relevant  national  health  technology  assessment  (“HTA”)  bodies  for
pivotal clinical studies designed to support marketing approval. This process was followed for etranacogene dezaparvovec.

Orphan Drug Regulation

We have been granted orphan drug exclusivity for etranacogene dezaparvovec for the treatment of hemophilia B
as  well  as  for  AMT-130  for  the  treatment  of  Huntington’s  disease  subject  to  the  conditions  applicable  to  orphan  drug
exclusivity in the European Union. Regulation (EC) No 141/2000, as amended, states that a drug will be designated as an
orphan drug if its sponsor can establish:

● that it is intended for the diagnosis, prevention or treatment of a life-threatening or chronically debilitating
condition  affecting  not  more  than  five  in  ten  thousand  persons  in  the  Community  when  the  application  is
made,  or  that  it  is  intended  for  the  diagnosis,  prevention  or  treatment  of  a  life-threatening,  seriously
debilitating or serious and chronic condition in the European Union and that without incentives it is unlikely
that the marketing of the drug in the European Union would generate sufficient return to justify the necessary
investment; and

● that there exists no satisfactory method of diagnosis, prevention, or treatment of the condition in question that
has  been  authorized  in  the  European  Union  or,  if  such  method  exists,  that  the  drug  will  be  of  significant
benefit to those affected by that condition.

Regulation (EC) No 847/2000 sets out further provisions for implementation of the criteria for designation of a
drug as an orphan drug. An application for the designation of a drug as an orphan drug must be submitted at any stage of
development of the drug before filing of a marketing authorization application.

If an EU-wide community marketing authorization in respect of an orphan drug is granted pursuant to Regulation
(EC)  No  726/2004,  as  amended,  the  European  Union  and  the  member  states  will  not,  for  a  period  of  10  years,  accept
another application for a marketing authorization, or grant a marketing authorization or accept an application to extend an
existing marketing authorization, for the same therapeutic indication, in respect of a similar drug.

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This period may however be reduced to six years if, at the end of the fifth year, it is established, in respect of the
drug concerned, that the criteria for orphan drug designation are no longer met, in other words, when it is shown on the
basis  of  available  evidence  that  the  product  is  sufficiently  profitable  not  to  justify  maintenance  of  market  exclusivity.
Notwithstanding the foregoing, a marketing authorization may be granted, for the same therapeutic indication, to a similar
drug if:

● the  holder  of  the  marketing  authorization  for  the  original  orphan  drug  has  given  its  consent  to  the  second

applicant;

● the holder of the marketing authorization for the original orphan drug is unable to supply sufficient quantities

of the drug; or

● the second applicant can establish in the application that the second drug, although similar to the orphan drug

already authorized, is safer, more effective, or otherwise clinically superior.

Regulation (EC) No 847/2000 lays down definitions of the concepts similar drug and clinical superiority, which
concepts have been expanded upon in subsequent Commission guidance. Other incentives available to orphan drugs in the
European  Union  include  financial  incentives  such  as  a  reduction  of  fees  or  fee  waivers  and  protocol  assistance.  Orphan
drug designation does not shorten the duration of the regulatory review and approval process.

Human Capital Resources

As of December 31, 2022, we had a total of 501 employees, 290 of whom are based in The Netherlands, 199 in
the  U.S.,  and  12  in  other  European  countries.  As  of  December  31,  2022,  110  of  our  employees  had  an  M.D.  or  Ph.D.
degree, or the foreign equivalent. During 2017, we established a works council in the Netherlands. None of our employees
are subject to collective bargaining agreements or other labor organizations. We believe that we have good relations with
all our employees and with the works council in the Netherlands.

Our values are to:
● Be passionate about the patient;
● Act with integrity and respect;
● Take ownership and act with urgency;
● Collaborate for success;
● Innovate every day; and
● Focus relentlessly on quality.

Our people are a critical component in our continued success. We strive to maximize the potential of our human
capital resources by creating a respectful, rewarding and inclusive work environment that enables our employees to further
our values. Development of our culture is reflected as part of our annual corporate goals. We invest in numerous learning
opportunities focused on individual, management and team development and other initiatives to support our employees and
build  our  culture.  In  2021  and  2022,  we  initiated  activities  to  coordinate  our  various  ongoing  activities  and  initiatives
within an environmental, social and governance (“ESG”) framework.

Corporate Information

uniQure B.V. (the “Company”) was incorporated on January 9, 2012 as a private company with limited liability
(besloten vennootschap met beperkte aansprakelijkheid) under the laws of the Netherlands. We are a leader in the field of
gene  therapy  and  seek  to  deliver  to  patients  suffering  from  rare  and  other  devastating  diseases  single  treatments  with
potentially curative results. Our business was founded in 1998 and was initially operated through our predecessor company,
Amsterdam Molecular Therapeutics Holding N.V (“AMT”). In 2012, AMT undertook a corporate reorganization, pursuant
to which uniQure B.V. acquired the entire business and assets of AMT and completed a share-for-share exchange with the
shareholders  of  AMT.  Effective  February  10,  2014,  in  connection  with  the  initial  public  offering,  we  converted  into  a
public company with limited liability (naamloze vennootschap) and changed its legal name from uniQure B.V. to uniQure
N.V.

We  are  registered  in  the  trade  register  of  the  Dutch  Chamber  of  Commerce  (Kamer  van  Koophandel)  under
number  54385229.  Our  headquarters  are  in  Amsterdam,  the  Netherlands,  and  its  registered  office  is  located  at
Paasheuvelweg 25, Amsterdam 1105 BP, the Netherlands and its telephone number is +31 20 240 6000.

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Our  website  address  is  www.uniqure.com.  We  make  available  free  of  charge  through  our  Internet  website  our
annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K, and any amendments to
these reports, as soon as reasonably practicable after we electronically file such material with, or furnish such material to,
the SEC. Also available through our website’s “Investors & Newsroom: Corporate Governance” page are charters for the
Audit, Compensation and Nominations and Corporate Governance committees of our board of directors (the “Board”) and
our  Code  of  Business  Conduct  and  Ethics.  We  are  not  including  the  information  on  our  website  as  a  part  of,  nor
incorporating it by reference into, this report.

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Item 1A.  Risk Factors

An investment in our ordinary shares involves a high degree of risk. You should carefully consider the following
information about these risks, together with the other information appearing elsewhere in this Annual Report on Form 10-
K,  including  our  financial  statements  and  related  notes  thereto,  before  deciding  to  invest  in  our  ordinary  shares.  We
operate  in  a  dynamic  and  rapidly  changing  industry  that  involves  numerous  risks  and  uncertainties.  The  risks  and
uncertainties described below are not the only ones we face. Other risks and uncertainties, including those that we do not
currently  consider  material,  may  impair  our  business.  If  any  of  the  risks  discussed  below  actually  occur,  our  business,
financial condition, operating results, or cash flows could be materially adversely affected. This could cause the value of
our securities to decline, and you may lose all or part of your investment.

Risks Related to the Current Covid Pandemic

Our business, operations, human resources and supply chain have been, and may continue to be, materially

and adversely affected by the ongoing Covid pandemic.

On  March  11,  2020,  the  World  Health  Organization  (“WHO”)  declared  the  ongoing  outbreak  of  coronavirus
disease (“Covid”) a pandemic. The Covid pandemic is affecting the U.S. and global economies and has affected and may
continue  to  affect  our  operations  and  those  of  third  parties  on  which  we  rely.  The  Covid  pandemic  has  caused  and  may
continue to cause disruptions in our raw material supply, our commercial-scale manufacturing capabilities for AAV-based
gene therapies, the development of our product candidates, employee productivity and the conduct of current and future
clinical trials. In addition, the Covid pandemic has affected and may continue to affect the operations of the FDA, EMA,
and other health authorities, which could result in delays of reviews and approvals, including with respect to our product
candidates.

Global supply chains have been disrupted, causing shortages, which could further impact our clinical trials. This
disruption  of  our  employees,  distributors  and  suppliers  has  historically  impacted  and  may  continue  to  impact  our  future
operating  results.  Additionally,  to  the  extent  that  inspections  of  facilities  by  governmental  authorities  are  required,  the
review of our marketing applications or supplements may further be delayed as regulatory authorities, such as FDA, have
significantly limited facility inspections during the pandemic.

We  may  also  be  subject  to  further  laws,  regulations,  guidelines,  executive  orders  and  other  requirements  at  the
federal,  state  and  local  levels  related  to  the  pandemic,  which  we  may  be  required  to  undertake  or  that  we  choose  to
undertake. Any such requirements or guidelines that we adopt could have a material impact on our business operations.

Risks Related to the Development of Our Product Candidates

Our product candidates in development have not yet been approved for commercial sale and they might never

receive regulatory approval or become commercially viable. We have never generated any significant revenue from
product sales and may never be profitable.

Our  pipeline  consists  of  product  candidates  in  research  or  development  that  have  not  been  approved  for
commercial sale. We have not generated any revenues from the sale of products or manufacturing of a product for a third
party and do not expect to generate any such revenue until this year, at the earliest. Our product candidates including AMT-
130 and any of our other potential product candidates will require extensive preclinical and/or clinical testing, manufacture
development  and  regulatory  approval  prior  to  commercial  use.  Our  research  and  development  efforts  may  not  be
successful.  Even  if  our  clinical  development  efforts  result  in  positive  data,  our  product  candidates  may  not  receive
regulatory approval or be successfully introduced and marketed at prices that would permit us to operate profitably.

We have encountered and may encounter future delays in and impediments to the progress of our clinical trials

or fail to demonstrate the safety and efficacy of our product candidates.

Clinical  and  non-clinical  development  is  expensive,  time-consuming,  and  uncertain  as  to  outcome.  Our  product
candidates are in different stages of clinical or preclinical development, and there is a significant risk of failure or delay in
each of these programs.

For example, we experienced an immaterial but unexpected delay when our clinical trials of HEMGENIX™ were

placed on clinical hold by the FDA from December 2020 to April 2021, following a preliminary diagnosis of
hepatocellular carcinoma in one patient. Similarly, we experienced an unexpected delay in the enrollment of our Phase Ib/II
clinical trial for Huntington’s disease between July and October 2022 as a result of our voluntary postponement and
comprehensive safety investigation into suspected unexpected serious adverse reactions in three patients.

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We  cannot  guarantee  that  any  preclinical  tests  or  clinical  trials  will  be  completed  as  planned  or  completed  on

schedule, if at all.

A  failure  of  one  or  more  preclinical  tests  or  clinical  trials  can  occur  at  any  stage  of  testing.  Events  that  may
prevent successful or timely completion of clinical development, as well as product candidate approval, include, but are not
limited to:

● occurrence  of  serious  adverse  events  associated  with  a  product  candidate  that  are  viewed  to  outweigh  its

potential benefits;

● delays in reaching a consensus with regulatory agencies on study design;
● delays in reaching agreement on acceptable terms with prospective clinical research organizations (“CROs”) and

clinical trial sites;

● delays in receiving regulatory authorization to conduct the clinical trials or a regulatory authority decision that

the clinical trial should not proceed;

● delays in obtaining or failure to obtain required IRB and IBC approval at each clinical trial site;
● requirements of regulatory authorities, IRBs, or IBCs to modify a study in such a way that it makes the study

impracticable to conduct;

● regulatory authority requirements to perform additional or unanticipated clinical trials;
● changes in standards of care which may necessitate the modification of our clinical trials or the conduct of new

trials;

● regulatory authority refusal to accept data from foreign clinical study sites;
● disagreements with regulatory authorities regarding our study design, including endpoints, our chosen indication,
or  our  interpretation  of  data  from  preclinical  studies  and  clinical  trials  or  a  finding  that  a  product  candidate’s
benefits do not outweigh its safety risks;

● recommendations from DSMBs to discontinue, pause, or modify the trial;
● imposition  of  a  clinical  hold  by  regulatory  agencies  after  an  inspection  of  our  clinical  trial  operations  or  trial

sites;

● suspension  or  termination  of  clinical  research  for  various  reasons,  including  noncompliance  with  regulatory
requirements or a finding that the participants are being exposed to unacceptable health risks, undesirable side
effects,  or  other  unexpected  characteristics  (alone  or  in  combination  with  other  products)  of  the  product
candidate, or due to findings of undesirable effects caused by a chemically or mechanistically similar therapeutic
or therapeutic candidate;

● failure by CROs, other third parties or us to adhere to clinical trial requirements or otherwise properly manage
the clinical trial process, including meeting applicable timelines, properly documenting case files, including the
retention of proper case files, and properly monitoring and auditing clinical sites;

● failure  of  sites  or  clinical  investigators  to  perform  in  accordance  with  Good  Clinical  Practice  or  applicable

regulatory guidelines in other countries;

● failure of patients to abide by clinical trial requirements;
● difficulty or delays in patient recruiting into clinical trials or in the addition of new investigators;
● delays  or  deviations  in  the  testing,  validation,  manufacturing,  and  delivery  of  our  product  candidates  to  the

clinical sites;

● delays in having patients complete participation in a study or return for post-treatment follow-up;
● clinical trial sites or patients dropping out of a study;
● the number of patients required for clinical trials of our product candidates being larger than we anticipate;
● clinical  trials  producing  negative  or  inconclusive  results,  or  our  studies  failing  to  reach  the  necessary  level  of
statistical  significance,  requiring  that  we  conduct  additional  clinical  trials  or  abandon  product  development
programs;

● interruptions  in  manufacturing  clinical  supply  of  our  product  candidates  or  issues  with  manufacturing  product

candidates that meet the necessary quality requirements;

● unanticipated clinical trial costs or insufficient funding, including to pay substantial application user fees;
● occurrence of serious adverse events or other undesirable side effects associated with a product candidate that are

viewed to outweigh its potential benefits;

● disagreements with regulatory authorities regarding the interpretation of our clinical trial data and results, or the

emergence of new information about or impacting our product candidates;

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● determinations that there are issues with our manufacturing facility or process; or
● changes  in  regulatory  requirements  and  guidance,  as  well  as  new,  revised,  postponed,  or  frozen  regulatory
requirements  (such  as  the  EU  Clinical  Trials  Regulation),  that  require  amending  or  submitting  new  clinical
protocols, undertaking additional new tests or analyses, or submitting new types or amounts of clinical data.

Before obtaining marketing approval from regulatory authorities for the sale of our product candidates, we must
conduct extensive clinical trials to demonstrate the safety and efficacy of the product candidates in humans. Such trials and
regulatory  review  and  approval  take  many  years.  It  is  impossible  to  predict  when  or  if  any  of  our  clinical  trials  will
demonstrate that product candidates are effective or safe in humans.

If the results of our clinical trials are inconclusive, or fail to meet the level of statistical significance required for

approval or if there are safety concerns or adverse events associated with our product candidates, we may:

● be delayed in or altogether prevented from obtaining marketing approval for our product candidates;
● obtain approval for indications or patient populations that are not as broad as intended or desired;
● obtain approval with labeling that includes significant use or distribution restrictions or safety warnings;
● be subject to changes with the way the product is administered;
● be  required  to  perform  additional  clinical  trials  to  support  approval  or  be  subject  to  additional  post-marketing

testing requirements;

● have regulatory authorities withdraw their approval of the product or impose restrictions on its distribution in the

form of a modified risk evaluation and mitigation strategy;

● be subject to the addition of labeling statements, such as warnings or contraindications;
● be sued; or
● experience damage to our reputation.

Because of the nature of the gene therapies we are developing, regulators may also require us to demonstrate long-
term gene expression, clinical efficacy and safety, which may require additional or longer clinical trials, and which may not
be able to be demonstrated to the regulatory authorities’ standards.

Our ability to recruit patients for our trials is often reliant on third parties, such as clinical trial sites. Clinical trial
sites may not have the adequate infrastructure established to handle gene therapy products or may have difficulty finding
eligible patients to enroll into a trial.

In addition, we, or any collaborators we may have may not be able to locate and enroll enough eligible patients to
participate  in  these  trials  as  required  by  the  FDA,  the  EMA  or  similar  regulatory  authorities  outside  the  U.S.  and  the
European Union. This may result in our failure to initiate or continue clinical trials for our product candidates or may cause
us to abandon one or more clinical trials altogether. Because our programs are focused on the treatment of patients with
rare or orphan or ultra-orphan diseases, our ability to enroll eligible patients in these trials may be limited or slower than
we  anticipate  considering  the  small  patient  populations  involved  and  the  specific  age  range  required  for  treatment
eligibility  in  some  indications.  In  addition,  our  potential  competitors,  including  major  pharmaceutical,  specialty
pharmaceutical  and  biotechnology  companies,  academic  institutions  and  governmental  agencies  and  public  and  private
research institutions, may seek to develop competing therapies, which would further limit the small patient pool available
for our studies. Also, patients may be reluctant to enroll in gene therapy trials where there are other therapeutic alternatives
available  or  that  may  become  available,  which  may  be  for  various  reasons  including  uncertainty  about  the  safety  or
effectiveness of a new therapeutic such as a gene therapy and the possibility that treatment with a gene therapy therapeutic
could  preclude  future  gene  therapy  treatments  due  to  the  formation  of  antibodies  following  and  in  response  to  the
treatment.

Any inability to successfully initiate or complete preclinical and clinical development could result in additional
costs to us or impair our ability to receive marketing approval, to generate revenues from product sales or obtain regulatory
and  commercialization  milestones  and  royalties.  In  addition,  if  we  make  manufacturing  or  formulation  changes  to  our
product  candidates,  including  changes  in  the  vector  or  manufacturing  process  used,  we  may  need  to  conduct  additional
studies  to  bridge  our  modified  product  candidates  to  earlier  versions.  It  is  also  possible  that  any  such  manufacturing  or
formulation changes may have an adverse impact on the performance of the product candidate. Clinical trial delays could
also shorten any periods during which we may have the exclusive right to commercialize our product candidates or allow
our competitors to bring products to market before we do, which could impair our ability to successfully commercialize our
product candidates and may materially harm our business, financial condition, and results of operations.

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Our  progress  in  early-stage  clinical  trials  may  not  be  indicative  of  long-term  efficacy  in  late-stage  clinical
trials, and our progress in trials for one product candidate may not be indicative of progress in trials for other product
candidates.

Study designs and results from previous studies are not necessarily predictive of our future clinical study designs
or results, and initial, top-line, or interim results may not be confirmed upon full analysis of the complete study data. Our
product candidates may fail to show the required level of safety and efficacy in later stages of clinical development despite
having  successfully  advanced  through  initial  clinical  studies.  Changes  to  product  candidates  may  also  impact  their
performance in subsequent studies.

A number of companies in the pharmaceutical and biotechnology industries have suffered significant setbacks in
later-stage  clinical  trials  even  after  achieving  promising  results  in  early-stage  clinical  trials.  If  a  larger  population  of
patients does not experience positive results during clinical trials, if these results are not reproducible or if our products
show  diminishing  activity  over  time,  our  product  candidates  may  not  receive  approval  from  the  FDA  or  EMA.  Data
obtained from preclinical and clinical activities are subject to varying interpretations, which may delay, limit, or prevent
regulatory  approval.  In  addition,  we  may  encounter  regulatory  delays  or  rejections  because  of  many  factors,  including
changes in regulatory policy during the period of product development. Failure to confirm favorable results from earlier
trials  by  demonstrating  the  safety  and  effectiveness  of  our  products  in  later-stage  clinical  trials  with  larger  patient
populations could have a material adverse effect on our business, financial condition, and results of operations.

Fast track product, breakthrough therapy, priority review, or RMAT designation by the FDA, or access to the
PRIME  scheme  by  the  EMA,  for  our  product  candidates  may  not  lead  to  faster  development  or  regulatory  review  or
approval process, and it does not increase the likelihood that our product candidates will receive marketing approval.

We  have  obtained  and  may  in  the  future  seek  one  or  more  of  fast  track  designation,  breakthrough  therapy
designation, RMAT designation, PRIME scheme access or priority review designation for our product candidates. A fast
track product designation is designed to facilitate the clinical development and expedite the review of drugs intended to
treat  a  serious  or  life-threatening  condition  and  which  demonstrate  the  potential  to  address  an  unmet  medical  need.  A
breakthrough therapy is defined as a drug that is intended, alone or in combination with one or more other drugs, to treat a
serious  or  life-threatening  disease  or  condition,  where  preliminary  clinical  evidence  indicates  that  the  drug  may
demonstrate  substantial  improvement  over  existing  therapies  on  one  or  more  clinically  significant  endpoints,  such  as
substantial  treatment  effects  observed  early  in  clinical  development.  A  RMAT  designation  is  designed  to  accelerate
approval  for  regenerative  advanced  therapies.  Priority  review  designation  is  intended  to  speed  the  FDA  marketing
application  review  timeframe  for  drugs  that  treat  a  serious  condition  and,  if  approved,  would  provide  a  significant
improvement  in  safety  or  effectiveness.  PRIME  is  a  scheme  provided  by  the  EMA,  similar  to  the  FDA’s  breakthrough
therapy designation, to enhance support for the development of medicines that target an unmet medical need.

For  drugs  and  biologics  that  have  been  designated  as  fast  track  products,  RMAT,  or  breakthrough  therapies,  or
granted access to the PRIME scheme, interaction and communication between the regulatory agency and the sponsor of the
trial can help to identify the most efficient path for clinical development. Sponsors of fast track products, RMAT products,
or breakthrough therapies may also be able to submit marketing applications on a rolling basis, meaning that the FDA may
review portions of a marketing application before the sponsor submits the complete application to the FDA, if the sponsor
pays the user fee upon submission of the first portion of the marketing application and the FDA approves a schedule for the
submission  of  the  remaining  sections.  For  products  that  receive  a  priority  review  designation,  the  FDA's  marketing
application review goal is shortened to six months, as opposed to ten months under standard review.

Designation as a fast track product, breakthrough therapy, RMAT, PRIME, or priority review product is within the
discretion  of  the  regulatory  agency.  Accordingly,  even  if  we  believe  one  of  our  product  candidates  meets  the  relevant
criteria, the agency may disagree and instead determine not to make such designation. In any event, the receipt of such a
designation for a product candidate may not result in a faster development process, review or approval compared to drugs
considered for approval under conventional regulatory procedures and does not assure ultimate marketing approval by the
agency. In addition, the FDA may later decide that the products no longer meet the applicable conditions for qualification
as either a fast track product, RMAT, or a breakthrough therapy or, for priority review products, decide that the period for
FDA review or approval will not be shortened. Moreover, in the U.S., FDA expects that sponsors with products under these
programs  will  be  prepared  for  a  more  rapid  pace  of  development,  including  with  respect  to  manufacturing  or  any
combination medical devices, such as companion diagnostics.  If we are unable to meet these expectations, we may not be
able to fully avail ourselves of certain advantages of these programs.

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We  may  not  be  successful  in  our  efforts  to  use  our  gene  therapy  technology  platform  to  build  a  pipeline  of

additional product candidates.

An element of our strategy is to use our gene therapy technology platform to expand our product pipeline and to
progress these candidates through preclinical and clinical development ourselves or together with collaborators. Although
we  currently  have  a  pipeline  of  programs  at  various  stages  of  development,  we  may  not  be  able  to  identify  or  develop
product candidates that are safe and effective. Even if we are successful in continuing to build our pipeline, the potential
product  candidates  that  we  identify  may  not  be  suitable  for  clinical  development.  Research  programs  to  identify  new
product candidates require substantial technical, financial, and human resources. We or any collaborators may focus our
efforts and resources on potential programs or product candidates that ultimately prove to be unsuccessful. If we do not
continue to successfully develop and commercialize product candidates based upon our technology, we may face difficulty
in obtaining product revenues in future periods, which could result in significant harm to our business, results of operations
and financial position and materially adversely affect our share price.

Our strategy of obtaining rights to key technologies through in-licenses may not be successful.

We seek to expand our product pipeline from time to time in part by in-licensing the rights to key technologies,
including  those  related  to  gene  delivery,  genes,  and  gene  cassettes.  The  future  growth  of  our  business  will  depend  in
significant part on our ability to in-license or otherwise acquire the rights to additional product candidates or technologies,
particularly  through  our  collaborations  with  academic  research  institutions.  However,  we  may  be  unable  to  in-license  or
acquire the rights to any such product candidates or technologies from third parties on acceptable terms or at all. The in-
licensing  and  acquisition  of  these  technologies  is  a  competitive  area,  and  many  more  established  companies  are  also
pursuing  strategies  to  license  or  acquire  product  candidates  or  technologies  that  we  may  consider  attractive.  These
established  companies  may  have  a  competitive  advantage  over  us  due  to  their  size,  cash  resources  and  greater  clinical
development  and  commercialization  capabilities.  In  addition,  companies  that  perceive  us  to  be  competitors  may  be
unwilling  to  license  rights  to  us.  Furthermore,  we  may  be  unable  to  identify  suitable  product  candidates  or  technologies
within our areas of focus. If we are unable to successfully obtain rights to suitable product candidates or technologies, our
business, financial condition, and prospects could suffer.

Negative public opinion and increased regulatory scrutiny of gene therapy and genetic research may damage
public perception of our product candidates or adversely affect our ability to conduct our business or obtain marketing
approvals for our product candidates.

Public  perception  may  be  influenced  by  claims  that  gene  therapy  is  unsafe,  and  gene  therapy  may  not  gain  the
acceptance of the public or the medical community. The risk of cancer remains a concern for gene therapy, and we cannot
assure that it will not occur in any of our planned or future clinical studies. In addition, there is the potential risk of delayed
adverse events following exposure to gene therapy products due to persistent biological activity of the genetic material or
other components of products used to carry the genetic material.

A small number of patients have experienced serious adverse events during our clinical trials of either AMT-060
(our first-generation hemophilia B gene therapy), etranacogene dezaparvovec, and AMT-130. However, adverse events in
our clinical trials or those conducted by other parties (even if not ultimately attributable to our product candidates), and the
resulting  publicity,  could  result  in  delay,  a  hold  or  termination  of  our  clinical  trials,  increased  governmental  regulation,
unfavorable public perception, failure of the medical community to accept and prescribe gene therapy treatments, potential
regulatory  delays  in  the  testing  or  approval  of  our  product  candidates,  stricter  labeling  requirements  for  those  product
candidates  that  are  approved  and  a  decrease  in  demand  for  any  such  product  candidates.  If  any  of  these  events  should
occur, it may have a material adverse effect on our business, financial condition and results of operations.

Certain of our product candidates may require medical devices for product administration and/or diagnostics,
resulting in our product candidates being deemed combination products or otherwise being dependent upon additional
regulatory approvals. This may result in the need to comply with additional regulatory requirements. If we are unable to
meet these regulatory requirements, we may be delayed or not be able to obtain product approval.

Certain  of  our  product  candidates,  such  as  AMT-130,  require  medical  devices,  such  as  a  stereotactic,  magnetic
resonance imaging guided catheter, for product administration. Other of our product candidates may also require the use of
a companion diagnostic device to confirm the presence of specific genetic or other biomarkers.

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It is possible that our product candidates would be deemed to be combination products, potentially necessitating
compliance with the FDA’s investigational device regulations, separate marketing application submissions for the medical
device component, a demonstration that our product candidates are safe and effective when used in combination with the
medical devices, cross labeling with the medical device, and compliance with certain of the FDA’s device regulations. If
we are not able to comply with the FDA’s device regulations, if we are not able to effectively partner with the applicable
medical device manufacturers, if we or any partners are not able to obtain any required FDA clearances or approvals of the
applicable medical devices, or if we are not able to demonstrate that our product candidates are safe and efficacious when
used  with  the  applicable  medical  devices,  we  may  be  delayed  in  or  may  never  obtain  FDA  approval  for  our  product
candidates, which would materially harm our business.

Moreover,  certain  of  our  delivery  modalities,  such  as  direct  delivery  of  product  candidates  to  the  brain,  may
require significant physician ability and skill. If physicians are not able to effectively deliver our product candidates to the
applicable site of action or if delivery modalities are too difficult, we may never be able to obtain approval for our product
candidates,  may  be  delayed  in  obtaining  approval,  or,  following  approval,  physicians  may  not  adopt  our  product
candidates, any of which may materially harm our business.

Risks Related to Our Manufacturing

Our manufacturing facility is subject to significant government regulations and approvals. If we fail to comply

with these regulations or maintain these approvals our business could be materially harmed.

Our manufacturing facility in Lexington is subject to ongoing regulation and periodic inspection by the FDA, EU
member state, and other regulatory bodies to ensure compliance with current cGMP requirements. Any failure to follow
and document our adherence to such cGMP regulations or other regulatory requirements may lead to significant delays in
the availability of products for commercial sale or clinical study, may result in the termination of or a hold on a clinical
study, or may delay or prevent filing or approval of marketing applications for our products.

Failure to comply with applicable regulations could also result in the FDA, EU member state, or other applicable
authorities  taking  various  actions,  including  levying  fines  and  other  civil  penalties;  imposing  consent  decrees  or
injunctions; requiring us to suspend or put on hold one or more of our clinical trials; suspending or withdrawing regulatory
approvals; delaying or refusing to approve pending applications or supplements to approved applications; requiring us to
suspend  manufacturing  activities  or  product  sales,  imports  or  exports;  requiring  us  to  communicate  with  physicians  and
other  customers  about  concerns  related  to  actual  or  potential  safety,  efficacy,  and  other  issues  involving  our  products;
mandating  or  recommending  product  recalls  or  seizing  products;  imposing  operating  restrictions;  and  seeking  criminal
prosecutions, among other outcomes. Poor control of production processes can also lead to the introduction of adventitious
agents or other contaminants, or to inadvertent changes in the properties or stability of a product candidate that may not be
detectable in final product testing and that could have an adverse effect on clinical studies, or patient safety or efficacy.
Moreover, if our manufacturing facility is not able to follow regulatory requirements, we may need to implement costly and
time-consuming remedial actions. Any of the foregoing could materially harm our business, financial condition, and results
of operations.

Moreover, if we are not able to manufacture a sufficient amount of our product candidates for clinical studies or
eventual  commercialization,  our  development  program  and  eventual  commercial  prospects  will  be  harmed.  If  we  cannot
produce an adequate amount of our product candidates in compliance with the applicable regulatory requirements, we may
need to contract with a third party to do so, in which case third party manufacturers may not be available or available on
favorable  terms.  The  addition  of  a  new  manufacturer  may  also  require  FDA,  EMA,  EU  and  other  regulatory  authority
approvals, which we may not be able to obtain.

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Gene  therapies  are  complex  and  difficult  to  manufacture.  We  could  experience  capacity,  production  or
technology  transfer  problems  that  result  in  delays  in  our  development  or  commercialization  schedules  or  otherwise
adversely affect our business.

The  insect-cell  based  manufacturing  process  we  use  to  produce  our  products  and  product  candidates  is  highly
complex and in the normal course is subject to variation or production difficulties. Issues with any of our manufacturing
processes,  even  minor  deviations  from  the  normal  process,  could  result  in  insufficient  yield,  product  deficiencies  or
manufacturing  failures  that  result  in  adverse  patient  reactions,  lot  failures,  insufficient  inventory,  product  recalls  and
product liability claims. Additionally, we may not be able to scale up some or all of our manufacturing processes, that may
result  in  delays  in  regulatory  approvals,  inability  to  produce  sufficient  amounts  of  commercial  product,  or  otherwise
adversely affect our ability to manufacture sufficient amounts of our products.

Many  factors  common  to  the  manufacturing  of  most  biologics  and  drugs  could  also  cause  production
interruptions,  including  raw  materials  shortages,  raw  material  failures,  growth  media  failures,  equipment  malfunctions,
facility contamination, labor problems, natural disasters, disruption in utility services, terrorist activities, war or cases of
force majeure and acts of god (including the effects of the Covid pandemic) beyond our control. We also may encounter
problems in hiring and retaining the experienced specialized personnel needed to operate our manufacturing process, which
could result in delays in our production or difficulties in maintaining compliance with applicable regulatory requirements.

Any  problems  in  our  manufacturing  processes  or  facilities  could  make  us  a  less  attractive  collaborator  for
academic  research  institutions  and  other  parties,  which  could  limit  our  access  to  additional  attractive  development
programs, result in delays in our clinical development or marketing schedules and materially harm our business.

Our  use  of  viruses,  chemicals  and  other  hazardous  materials  requires  us  to  comply  with  regulatory

requirements and exposes us to significant potential liabilities.

Our development and manufacturing processes involve the use of viruses, chemicals, other (potentially) hazardous
materials and produce waste products. Accordingly, we are subject to national, federal, state, and local laws and regulations
in the U.S. and the Netherlands governing the use, manufacture, distribution, storage, handling, treatment, and disposal of
these  materials.  In  addition  to  ensuring  the  safe  handling  of  these  materials,  applicable  requirements  require  increased
safeguards  and  security  measures  for  many  of  these  agents,  including  controlling  access  and  screening  of  entities  and
personnel who have access to them, and establishing a comprehensive national database of registered entities. In the event
of  an  accident  or  failure  to  comply  with  environmental,  occupational  health  and  safety  and  export  control  laws  and
regulations, we could be held liable for damages that result, and any such liability could exceed our assets and resources,
and could result in material harm to our business, financial condition, and results of operations.

Our  resources  might  be  adversely  affected  if  we  are  unable  to  validate  our  manufacturing  processes  and

methods, or develop new processes and methods to meet our product supply needs and obligations.

The manufacture of our AAV gene therapies is complex and requires significant expertise. Even with the relevant
experience and expertise, manufacturers of gene therapy products often encounter difficulties in production, particularly in
scaling out and validating initial production, and ensuring that the product meets required specifications. These problems
include difficulties with production costs and yields, quality control, including stability and potency of the product, quality
assurance testing, operator error, shortages of qualified personnel, as well as compliance with strictly enforced federal, state
and foreign regulations. In the past, we have manufactured certain batches of product candidates, intended for nonclinical,
clinical and process validation purposes that have not met all of our pre-specified quality parameters. To meet our expected
future production needs and our regulatory filing timelines for gene therapy product candidates we will need to complete
the validation of our manufacturing processes and methods, and we may need to develop and validate new or larger scale
manufacturing processes and methods. If we are unable to consistently manufacture our gene therapy product candidates or
any  approved  products  in  accordance  with  our  pre-specified  quality  parameters  and  applicable  regulatory  standards,  it
could adversely impact our ability to validate our manufacturing processes and methods, to meet our production needs, to
file a BLA or other regulatory submissions, to develop our other proprietary programs, to conserve our cash, or to receive
financial payments pursuant to our agreements with third parties.

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Risks Related to Regulatory Approval of Our Products

We cannot predict when or if we will obtain marketing approval to commercialize a product candidate.

The development and commercialization of our product candidates, including their design, testing, manufacture,
safety, efficacy, purity, recordkeeping, labeling, storage, approval, advertising, promotion, sale, and distribution, are subject
to comprehensive regulation by the FDA and other regulatory agencies in the U.S., the EMA, and other regulatory agencies
of  the  member  states  of  the  European  Union,  and  similar  regulatory  authorities  in  other  jurisdictions.  Failure  to  obtain
marketing  approval  for  a  product  candidate  in  a  specific  jurisdiction  will  prevent  us  from  commercializing  the  product
candidate in that jurisdiction.

The process of obtaining marketing approval for our product candidates in the U.S. States, the European Union,
and other countries is expensive and may take many years, if approval is obtained at all. 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.
Regulatory authorities may also be delayed in completing their review of any marketing applications submitted by us or
our  partners.  Regulatory  authorities  have  substantial  discretion  in  the  approval  process  and  may  refuse  to  accept  any
application,  may  decide  that  our  data  are  insufficient  for  approval,  may  require  additional  preclinical,  clinical,  or  other
studies and may not complete their review in a timely manner. Further, any marketing approval we ultimately obtain may
be for only limited indications or be subject to stringent labeling or other restrictions or post-approval commitments that
render the approved product not commercially viable.

The risks associated with the marketing approval process are heightened by the status of our products as gene

therapies.

We believe that all our current product candidates will be viewed as gene therapy products by the applicable

regulatory authorities. While there are a number of gene therapy product candidates under development, in the U.S., the
FDA has only approved a limited number of gene therapy products, to date. Accordingly, regulators, like the FDA, may
have limited experience with the review and approval of marketing applications for gene therapy products.

Both the FDA 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 that are difficult to predict. The FDA and the EMA have
issued  various  guidance  documents  pertaining  to  gene  therapy  products,  with  which  we  likely  must  comply  to  gain
regulatory approval of any of our product candidates in the U.S. or EU, respectively. The close regulatory scrutiny of gene
therapy products may result in delays and increased costs and may ultimately lead to the failure to obtain approval for any
gene therapy product.

Regulatory requirements affecting gene therapy have changed frequently and continue to evolve, and agencies at
both  the  U.S.  federal  and  state  level,  as  well  as  congressional  committees  and  foreign  governments,  have  sometimes
expressed interest in further regulating biotechnology. In the U.S., there have been a number of recent changes relating to
gene  therapy  development.  By  example,  FDA  issued  a  number  of  new  guidance  documents,  and  continues  to  issue
guidance  documents,  on  human  gene  therapy  development,  one  of  which  was  specific  to  human  gene  therapy  for
hemophilia,  one  that  was  specific  to  neurodegenerative  diseases,  and  another  of  which  was  specific  to  rare  diseases.
Moreover, the European Commission conducted a public consultation in early 2013 on the application of EU legislation
that governs advanced therapy medicinal products, including gene therapy products, which could result in changes in the
data we need to submit to the EMA for our product candidates to gain regulatory approval or change the requirements for
tracking,  handling  and  distribution  of  the  products  which  may  be  associated  with  increased  costs.  In  addition,  divergent
scientific  opinions  among  the  various  bodies  involved  in  the  review  process  may  result  in  delays,  require  additional
resources, and ultimately result in rejection. The FDA, EMA, and other regulatory authorities will likely continue to revise
and  further  update  their  approaches  to  gene  therapies  in  the  coming  years.  These  regulatory  agencies,  committees  and
advisory  groups  and  the  new  regulations  and  guidelines  they  promulgate  may  lengthen  the  regulatory  review  process,
require  us  to  perform  additional  studies,  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.  Delay  or  failure  to  obtain,  or  unexpected  costs  in  obtaining,  the  regulatory  approval
necessary  to  bring  a  potential  product  to  market  could  decrease  our  ability  to  generate  sufficient  product  revenues  to
maintain our business.

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Our failure to obtain or maintain orphan product exclusivity for any of our product candidates for which we
seek  this  status  could  limit  our  commercial  opportunity,  and  if  our  competitors  are  able  to  obtain  orphan  product
exclusivity before we do, we may not be able to obtain approval for our competing products for a significant period.

Regulatory authorities in some jurisdictions, including the U.S. and the European Union, may designate drugs for
relatively small patient populations as orphan drugs. While certain of our product candidates have received orphan drug
designation,  there  is  no  guarantee  that  we  will  be  able  to  receive  such  designations  in  the  future.  The  FDA  may  grant
orphan designation to multiple sponsors for the same compound or active molecule and for the same indication. If another
sponsor receives FDA approval for such product before we do, we would be prevented from launching our product in the
U.S. for the orphan indication for a period of at least seven years unless we can demonstrate clinical superiority.

Moreover, while orphan drug designation neither shortens the development or regulatory review time, nor gives
the product candidate advantages in the regulatory review or approval process, generally, if a product with an orphan drug
designation subsequently receives the first marketing approval for the relevant indication, the product is entitled to a period
of market exclusivity, which precludes the FDA or the EMA from approving another marketing application for the same
drug for the same indication for that period. The FDA and the EMA, however, may subsequently approve a similar drug or
same drug, in the case of the U.S., for the same indication during the first product's market exclusivity period if the FDA or
the  EMA  concludes  that  the  later  drug  is  clinically  superior  in  that  it  is  shown  to  be  safer  or  more  effective  or  makes  a
major contribution to patient care. Orphan exclusivity in the U.S. also does not prevent the FDA from approving another
product that is considered to be the same as our product candidates for a different indication or a different product for the
same orphan indication. If another product that is the same as ours is approved for a different indication, it is possible that
third-party  payors  will  reimburse  for  products  off-label  even  if  not  indicated  for  the  orphan  condition.  Moreover,  in  the
U.S. the exact scope of orphan exclusivity is currently uncertain and evolving due to a recent court decision.

Orphan  drug  exclusivity  may  be  lost  if  the  FDA  or  the  EMA  determines  that  the  request  for  designation  was
materially defective, or if the manufacturer is unable to assure sufficient quantity of the drug to meet the needs of patients
with the rare disease or condition or if the incidence and prevalence of patients who are eligible to receive the drug in these
markets  materially  increase.  The  inability  to  obtain  or  failure  to  maintain  adequate  product  exclusivity  for  our  product
candidates could have a material adverse effect on our business prospects, results of operations and financial condition.

Additionally, regulatory criteria with respect to orphan products is evolving, especially in the area of gene therapy.
By example, in the U.S., whether two gene therapies are considered to be the same for the purpose of determining clinical
superiority  was  recently  updated  via  a  final  guidance  document  specific  to  gene  therapies,  and  depends  on  a  number  of
factors, including the expressed transgene, the vector, and other product or product candidate features. Depending on the
products, whether two products are ultimately considered to be the same may be determined by FDA on a case-by-case
basis,  making  it  difficult  to  make  predictions  regarding  when  FDA  might  be  able  to  make  an  approval  of  a  product
effective and whether periods of exclusivity will effectively block competitors seeking to market products that are the same
or similar to ours for the same intended use. Accordingly, whether any of our product candidates will be deemed to be the
same as another product or product candidate is uncertain.

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As  appropriate,  we  intend  to  seek  available  periods  of  regulatory  exclusivity  for  our  product  candidates.
However, there is no guarantee that we will be granted these periods of regulatory exclusivity or that we will be able to
maintain these periods of exclusivity.

The  FDA  grants  product  sponsors  certain  periods  of  regulatory  exclusivity,  during  which  the  agency  may  not
approve,  and  in  certain  instances,  may  not  accept,  certain  marketing  applications  for  competing  drugs.  For  example,
biologic  product  sponsors  may  be  eligible  for  twelve  years  of  exclusivity  from  the  date  of  approval,  seven  years  of
exclusivity for drugs that are designated to be orphan drugs, and/or a six-month period of exclusivity added to any existing
exclusivity period for the submission of FDA requested pediatric data. While we intend to apply for all periods of market
exclusivity that we may be eligible for, there is no guarantee that we will be granted any such periods of market exclusivity.
By  example,  regulatory  authorities  may  determine  that  our  product  candidates  are  not  eligible  for  periods  of  regulatory
exclusivity  for  various  reasons,  including  a  determination  by  the  FDA  that  a  BLA  approval  does  not  constitute  a  first
licensure of the product. Additionally, under certain circumstances, the FDA may revoke the period of market exclusivity.
Thus, there is no guarantee that we will be able to maintain a period of market exclusivity, even if granted. In the case of
orphan designation, other benefits, such as tax credits and exemption from user fees may be available. If we are not able to
obtain or maintain orphan drug designation or any period of market exclusivity to which we may be entitled, we could be
materially  harmed,  as  we  will  potentially  be  subject  to  greater  market  competition  and  may  lose  the  benefits  associated
with  programs.  It  is  also  possible  that  periods  of  exclusivity  will  not  adequately  protect  our  product  candidates  from
competition. For instance, even if we receive twelve years of exclusivity from the FDA, other applicants will still be able to
submit and receive approvals for versions of our product candidates through a full BLA.

If  we  do  not  obtain  or  maintain  periods  of  market  exclusivity,  we  may  face  competition  sooner  than  otherwise
anticipated.  For  instance,  in  the  U.S.,  this  could  mean  that  a  competing  biosimilar  product  may  be  able  to  submit  an
application  to  the  FDA  and  obtain  approval  either  as  a  biosimilar  to  one  of  our  products  or  even  as  an  interchangeable
product. This may require that we undertake costly and time-consuming patent litigation, to the extent available, or defend
actions  brought  by  the  biosimilar  applicant  for  declaratory  judgment.  If  a  biosimilar  product  does  enter  the  market,  it  is
possible that it could be substituted for one of our product candidates, especially if it is available at a lower price.

It  is  also  possible  that,  at  the  time  we  obtain  approval  of  our  product  candidates,  regulatory  laws  and  policies
around exclusivities may have changed. For instance, there have been efforts to decrease the U.S. period of exclusivity to a
shorter timeframe. Future proposed budgets, international trade agreements and other arrangements or proposals may affect
periods of exclusivity.

If  any  of  our  product  candidates  receive  regulatory  approval,  we  and/or  our  partners  will  be  subject  to
extensive  regulatory  requirements.  Failure  to  fulfill  and  comply  with  the  applicable  regulatory  requirements  could
result in regulatory enforcement actions that would be detrimental to our business.

Following any regulatory approval, the FDA and the EMA may impose certain post-approval requirements related
to a product. Specifically, any approved products will be subject to continuing and comprehensive regulation concerning
the  product’s  design,  testing,  manufacture,  safety,  efficacy,  recordkeeping,  labeling,  storage,  approval,  advertising,
promotion, sale and distribution. Regulatory authorities may also require post-marketing testing, known as Phase 4 testing,
a risk evaluation and mitigation strategy, and surveillance to monitor the effects of an approved product or place conditions
on an approval that could restrict the distribution or use of the product. Failure to comply with any of these requirements
could result in regulatory, administrative, or other enforcement action, that would be detrimental to our business.

For instance, the FDA and other government agencies closely regulate the post-approval marketing and promotion
of  approved  products,  including  off-label  promotion,  industry-sponsored  scientific  and  educational  activities,  and  the
Internet and social media. Approved products may be marketed only for the approved indications and in accordance with
the  provisions  of  the  approved  labeling.  Failure  to  comply  with  regulatory  promotional  standards  could  result  in  actions
being brought against us by these agencies.

Moreover, if a company obtains FDA approval for a product via the accelerated approval pathway, the company
would be required to conduct a post-marketing confirmatory trial to verify and describe the clinical benefit in support of
full  approval.  FDA  can  require  that  this  confirmatory  trial  be  commenced  prior  to  FDA  granting  a  product  accelerated
approval.  An  unsuccessful  post-marketing  study  or  failure  to  complete  such  a  study  could  result  in  the  expedited
withdrawal of the FDA’s marketing approval for a product using a statutorily defined streamlined process.

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Changes  to  some  of  the  conditions  established  in  an  approved  application,  including  changes  in  labeling,
indications, manufacturing processes or facilities, may require a submission to and approval by the FDA or the EMA, as
applicable, before the change can be implemented. A New Drug Application (“NDA”)/BLA or MAA supplement for a new
indication typically requires clinical data similar to that in the original application. The applicable regulatory authorities
would review such supplement using similar procedures and actions as in reviewing NDAs/BLAs and MAAs.  

Adverse event reporting and submission of periodic reports is required following marketing approval. Regulatory
authorities may withdraw product approvals or request product recalls, as well as impose other enforcement actions, if a
company fails to comply with regulatory standards, if it encounters problems following initial marketing, or if previously
unrecognized problems are subsequently discovered.

In addition, the manufacture, testing, packaging, labeling, and distribution of products after approval will need to
continue to conform to cGMPs. Drug and biological product manufacturers and certain of their subcontractors are subject
to  periodic  unannounced  inspections  by  the  FDA  or  the  EMA  for  compliance  with  cGMPs.  Accordingly,  manufacturers
must continue to expend time, money and effort in the areas of production and quality control to maintain compliance with
cGMPs.  In  addition,  prescription  drug  manufacturers  in  the  U.S.  must  comply  with  applicable  provisions  of  the  Drug
Supply Chain Security Act and provide and receive product tracing information, maintain appropriate licenses, ensure they
only work with other properly licensed entities and have procedures in place to identify and properly handle suspect and
illegitimate products.

Where we partner with third parties for the development, approval, and marketing of a product, such third parties
will be subject to the same regulatory obligations as we will. However, as we will not control the actions of the applicable
third parties, we will be reliant on them to meet their contractual and regulatory obligations. Accordingly, actions taken by
any of our partners could materially and adversely impact our business.

Risks Related to Commercialization

If  we,  or  our  commercial  partner,  are  unable  to  successfully  commercialize  our  product  candidates  or

experience significant delays in doing so, our business could be materially harmed.

Our  ability  to  generate  revenues  from  HEMGENIX™  or  any  other  product  will  depend  on  the  successful
development and eventual commercialization of our product candidates. The success of HEMGENIX™ or other product
candidates will depend on many factors, including:

● successful  execution  of  our  contractual  relationship  with  CSL  Behring  for  the  commercialization  of

HEMGENIX™;

● successful completion of preclinical studies and clinical trials, and other work required by regulators;
● receipt and maintenance of marketing approvals from applicable regulatory authorities;
● our ability to timely manufacture sufficient quantities of HEMGENIX™ and other products according to required

quality specifications;

● obtaining  and  maintaining  patent  and  trade  secret  protection  and  non-patent  exclusivities  for  our  product

candidates;

● maintaining regulatory approvals using our manufacturing facility in Lexington, Massachusetts;
● launch and commercialization of our products, if approved, whether alone or in collaboration with others;
● identifying and engaging effective distributors or resellers on acceptable terms in jurisdictions where we plan to

utilize third parties for the marketing and sales of our product candidates;

● acceptance of our products, if approved, by patients, the medical community, and third-party payers;
● effectively competing with existing therapies and gene therapies based on safety and efficacy profiles;
● the strength of our marketing and distribution;
● achieve optimal pricing based on durability of expression, safety, and efficacy;
● the ultimate content of the regulatory authority approved label, including the approved clinical indications, and

any limitations or warnings;

● any distribution or use restrictions imposed by regulatory authorities;
● the interaction of our products with any other medicines that patients may be taking or the restriction on the use

of our products with other medicines;

● the standard of care at the time of product approval;
● the relative convenience and ease of administration of our products;

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● obtaining  and  maintaining  healthcare  coverage  and  adequate  reimbursement  for  HEMGENIX™  and  other

products;

● any price concessions, rebates, or discounts we may need to provide;
● complying  with  any  applicable  post-approval  commitments  and  requirements,  and  maintaining  a  continued

acceptable overall safety profile; and

● obtaining  adequate  reimbursement  for  the  total  patient  population  and  each  subgroup  to  sustain  a  viable

commercial business model in U.S. and EU markets.

CSL Behring may not receive a conditional marketing authorization based on an accelerated assessment by the
EMA for AMT-061 product candidate to facilitate a first commercial sale in the European Union prior to July 2, 2023, and
we,  thus,  may  not  receive  the  $75.0  million  first  commercial  sale  milestone  in  any  of  the  five  contractually  defined
European countries prior to July 2, 2023 under the CSL Behring Agreement.

Even  if  our  product  candidates  are  approved,  they  may  be  subject  to  limitations  that  make  commercialization
difficult. There may be limitations on the indicated uses and populations for which the products may be marketed. They
may also be subject to other conditions of approval, may contain significant safety warnings, including boxed warnings,
contraindications,  and  precautions,  may  not  be  approved  with  label  statements  necessary  or  desirable  for  successful
commercialization,  or  may  contain  requirements  for  costly  post-market  testing  and  surveillance,  or  other  requirements,
including  the  submission  of  a  risk  evaluation  and  mitigation  strategy,  or  REMS,  to  monitor  the  safety  or  efficacy  of  the
products.  Failure  to  achieve  or  implement  any  of  the  above  elements  could  result  in  significant  delays  or  an  inability  to
successfully commercialize our product candidates, which could materially harm our business.

The  affected  populations  for  our  gene  therapies  may  be  smaller  than  we  or  third  parties  currently  project,

which may affect the size of our addressable markets.

Our projections of the number of people who have the diseases we are seeking to treat, as well as the subset of
people with these diseases who have the potential to benefit from treatment with our therapies, are estimates based on our
knowledge  and  understanding  of  these  diseases.  The  total  addressable  market  opportunities  for  these  therapies  will
ultimately depend upon many factors, including the diagnosis and treatment criteria included in the final label, if approved
for sale in specified indications, acceptance by the medical community, patient consent, patient access and product pricing
and reimbursement.

Prevalence  estimates  are  frequently  based  on  information  and  assumptions  that  are  not  exact  and  may  not  be
appropriate, and the methodology is forward-looking and speculative. The use of such data involves risks and uncertainties
and is subject to change based on various factors. Our estimates may prove to be incorrect and new studies may change the
estimated  incidence  or  prevalence  of  the  diseases  we  seek  to  address.  The  number  of  patients  with  the  diseases  we  are
targeting  may  turn  out  to  be  lower  than  expected  or  may  not  be  otherwise  amenable  to  treatment  with  our  products,
reimbursement may not be sufficient to sustain a viable business for all sub populations being studied, or new patients may
become increasingly difficult to identify or access, any of which could adversely affect our results of operations and our
business.

The  addressable  markets  for  AAV-based  gene  therapies  may  be  impacted  by  the  prevalence  of  neutralizing
antibodies to the capsids, which are an integral component of our gene therapy constructs. Patients that have pre-existing
antibodies to a particular capsid may not be eligible for administration of a gene therapy that includes this particular capsid.

Any approved gene therapy we seek to offer may fail to achieve the degree of market acceptance by physicians,

patients, third party payers and others in the medical community necessary for commercial success.

Doctors may be reluctant to accept a gene therapy as a treatment option or, where available, choose to continue to
rely  on  existing  treatments.  The  degree  of  market  acceptance  of  any  of  our  product  candidates  that  receive  marketing
approval in the future will depend on many factors, including:

● the efficacy and potential advantages of our therapies compared with alternative treatments;
● our  ability  to  convince  payers  of  the  long-term  cost-effectiveness  of  our  therapies  and,  consequently,  the

availability of third-party coverage and adequate reimbursement;

● the  cost  of  treatment  with  gene  therapies,  including  ours,  in  comparison  to  traditional  chemical  and  small-

molecule treatments;

● the limitations on use and label requirements imposed by regulators;
● the convenience and ease of administration of our gene therapies compared with alternative treatments;

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● the willingness of the target patient population to try new therapies, especially a gene therapy, and of physicians

to administer these therapies;

● the strength of marketing and distribution support;
● the prevalence and severity of any side effects;
● limited access to site of service that can perform the product preparation and administer the infusion; and
● any restrictions by regulators on the use of our products.

A  failure  to  gain  market  acceptance  for  any  of  the  above  reasons,  or  any  reasons  at  all,  by  a  gene  therapy  for
which we receive regulatory approval would likely hinder our ability to recapture our substantial investments in that and
other gene therapies and could have a material adverse effect on our business, financial condition, and results of operation.

If  the  market  opportunities  for  our  product  candidates  are  smaller  than  we  believe  they  are,  our  product

revenues may be adversely affected, and our business may suffer.

We  focus  our  research  and  product  development  on  treatments  for  severe  genetic  and  orphan  diseases.  Our
understanding of both the number of people who have these diseases, as well as the subset of people with these diseases
who have the potential to benefit from treatment with our product candidates, are based on estimates. These estimates may
prove to be incorrect and new studies may reduce the estimated incidence or prevalence of these diseases. The number of
patients  in  the  U.S.,  the  EU  and  elsewhere  may  turn  out  to  be  lower  than  expected,  may  not  be  otherwise  amenable  to
treatment  with  our  products  or  patients  may  become  increasingly  difficult  to  identify  and  access,  any  of  which  could
adversely affect our business, financial condition, results of operations and prospects.

Further, there are several factors that could contribute to making the actual number of patients who receive other
potential products less than the potentially addressable market. These include the lack of widespread availability of, and
limited  reimbursement  for,  new  therapies  in  many  underdeveloped  markets.  Further,  the  severity  of  the  progression  of  a
disease  up  to  the  time  of  treatment,  especially  in  certain  degenerative  conditions,  could  diminish  the  therapeutic  benefit
conferred by a gene therapy. Lastly, certain patients’ immune systems might prohibit the successful delivery of certain gene
therapy products to the target tissue, thereby limiting the treatment outcomes.

Our  gene  therapy  approach  utilizes  vectors  derived  from  viruses,  which  may  be  perceived  as  unsafe  or  may
result  in  unforeseen  adverse  events.  Negative  public  opinion  and  increased  regulatory  scrutiny  of  gene  therapy  may
damage public perception of the safety of our product and product candidates and adversely affect our ability to conduct
our business or obtain regulatory approvals for our product candidates.

Gene  therapy  remains  a  novel  technology.  Public  perception  may  be  influenced  by  claims  that  gene  therapy  is
unsafe,  and  gene  therapy  may  not  gain  the  acceptance  of  the  public  or  the  medical  community.  Public  and  medical
community  adoption  of  any  of  our  gene  therapies  will  also  depend  on  factors  including  the  ease  of  administration  in
comparison to other therapeutics. By example, the need for complex surgeries for the administration of a product candidate
may impact the acceptance of a product.

In particular, our success will depend upon physicians who specialize in the treatment of genetic diseases targeted
by our product and product candidates, prescribing treatments that involve the use of our product and product candidates,
in  lieu  of,  or  in  addition  to,  existing  treatments  with  which  they  are  familiar  and  for  which  greater  clinical  data  may  be
available.  More  restrictive  government  regulations  or  negative  public  opinion  would  have  an  adverse  effect  on  our
business,  financial  condition,  results  of  operations  and  prospects  and  may  delay  or  impair  the  development  and
commercialization  of  our  product  candidates  or  demand  for  any  products  we  may  develop.  For  example,  earlier  gene
therapy trials led to several well-publicized adverse events, including cases of leukemia and death seen in other trials using
other vectors. Serious adverse events in our clinical trials, or other clinical trials involving gene therapy products or our
competitors’  products,  even  if  not  ultimately  attributable  to  the  relevant  product  candidates,  and  the  resulting  publicity,
could result in increased government regulation, unfavorable public perception, potential regulatory delays in the testing or
approval  of  our  product  candidates,  stricter  labeling  requirements  for  those  product  candidates  that  are  approved  and  a
decrease in demand for any products for which we obtain marketing approval.

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Ethical,  legal,  and  social  issues  may  reduce  demand  for  any  gene  therapy  products  for  which  we  obtain

marketing approval.

Prior to receiving certain gene therapies, patients may be required to undergo genetic testing. Genetic testing has
raised  concerns  regarding  the  appropriate  utilization  and  the  confidentiality  of  information  provided  by  genetic  testing.
Genetic tests for assessing a person’s likelihood of developing a chronic disease have focused public attention on the need
to  protect  the  privacy  of  genetic  information.  For  example,  concerns  have  been  expressed  that  insurance  carriers  and
employers may use these tests to discriminate on the basis of genetic information, resulting in barriers to the acceptance of
genetic tests by consumers. This could lead to governmental authorities restricting genetic testing or calling for limits on or
regulating  the  use  of  genetic  testing,  particularly  for  diseases  for  which  there  is  no  known  cure.  Any  of  these  scenarios
could decrease demand for any products for which we obtain marketing approval.

If we, or our commercial partner, obtain approval to commercialize any of our product candidates outside of

the U.S., a variety of risks associated with international operations could materially adversely affect our business.

We expect that we will be subject to additional risks in commercializing any of our product candidates outside the

U. S., including:

● different regulatory requirements for approval of drugs and biologics in foreign countries;
● reduced protection for intellectual property rights;
● unexpected  changes  in  tariffs,  trade  barriers  and  regulatory  requirements  which  may  make  it  more  difficult  or

expensive to export or import products and supplies to or from the U.S.;

● economic weakness, including inflation, or political instability in particular foreign economies and markets;
● compliance with tax, employment, immigration, and labor laws for employees living or traveling abroad;
● foreign currency fluctuations, which could result in increased operating expenses and reduced revenues, and other

obligations incident to doing business in another country;

● workforce uncertainty in countries where labor unrest is more common than in the U.S.;
● production  shortages  resulting  from  any  events  affecting  raw  material  supply  or  manufacturing  capabilities

abroad; and

● business  interruptions  resulting  from  geopolitical  actions,  including  war  and  terrorism  or  natural  disasters

including earthquakes, typhoons, floods, and fires.

In February 2022, armed conflict escalated between Russia and Ukraine. The sanctions announced by the U.S. and
other countries following Russia’s invasion of Ukraine against Russia to date include restrictions on selling or importing
goods, services or technology in or from affected regions and travel bans and asset freezes impacting connected individuals
and  political,  military,  business  and  financial  organizations  in  Russia.  The  U.S.  and  other  countries  could  impose  wider
sanctions and take other actions should the conflict further escalate. It is not possible to predict the broader consequences
of  this  conflict,  which  could  include  further  sanctions,  embargoes,  regional  instability,  geopolitical  shifts  and  adverse
effects  on  macroeconomic  conditions,  currency  exchange  rates  and  financial  markets,  all  of  which  could  impact  our
business, financial condition and results of operations.

We may be adversely affected by the effects of inflation.

Inflation has the potential to adversely affect our liquidity, business, financial condition and results of operations
by  increasing  our  overall  cost  structure.  The  existence  of  inflation  in  the  economy  has  resulted  in,  and  may  continue  to
result  in,  higher  interest  rates  and  capital  costs,  shipping  costs,  supply  shortages,  increased  costs  of  labor,  weakening
exchange rates and other similar effects. As a result of inflation, we have experienced and may continue to experience, cost
increases. Although we may take measures to mitigate the impact of this inflation, if these measures are not effective our
business,  financial  condition,  results  of  operations  and  liquidity  could  be  materially  adversely  affected.  Even  if  such
measures are effective, there could be a difference between the timing of when these beneficial actions impact our results
of operations and when the cost inflation is incurred.

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We face substantial competition, and others may discover, develop, or commercialize competing products before

or more successfully than we do.

The  development  and  commercialization  of  new  biotechnology  and  biopharmaceutical  products,  including  gene
therapies, is highly competitive. We may face intense competition with respect to our product candidates, as well as with
respect  to  any  product  candidates  that  we  may  seek  to  develop  or  commercialize  in  the  future,  from  large  and  specialty
pharmaceutical  companies  and  biotechnology  companies  worldwide,  who  currently  market  and  sell  products  or  are
pursuing the development of products for the treatment of many of the disease indications for which we are developing our
product  candidates.  Potential  competitors  also  include  academic  institutions,  government  agencies  and  other  public  and
private research organizations that conduct research, seek patent protection, and establish collaborative arrangements for
research,  development,  manufacturing,  and  commercialization.  In  recent  years,  there  has  been  a  significant  increase  in
commercial and scientific interest and financial investment in gene therapy as a therapeutic approach, which has intensified
the competition in this area.

We face worldwide competition from larger pharmaceutical companies, specialty pharmaceutical companies and
biotechnology  firms,  universities  and  other  research  institutions  and  government  agencies  that  are  developing  and
commercializing  pharmaceutical  products.  Our  key  competitors  focused  on  developing  therapies  in  various  indications,
include  among  others,  Pfizer,  Freeline  Therapeutics,  Intellia  Therapeutics,  Sangamo  Biosciences,  Voyager  Therapeutics,
Passage  Bio,  Roche,  PTC  Therapeutics,  Prilenia  Therapeutics,  CombiGene,  Caritas  Therapeutics,  Alnylam,  Wave  Life
Sciences, Bayer AG, Amicus Therapeutics and 4D Molecular Therapeutics.

Our  commercial  opportunity  could  be  reduced  or  eliminated  if  our  competitors  develop  and  commercialize
products that are safer, more effective, have fewer or less severe side effects, are more convenient or are less expensive
than  the  products  that  we  develop.  Our  competitors  also  may  obtain  FDA,  EMA,  or  other  regulatory  approval  for  their
products more rapidly than we do, which could result in our competitors establishing a strong market position before we
are able to enter the market. A competitor approval may also prevent us from entering the market if the competitor receives
any regulatory exclusivities that block our product candidates. Because we expect that gene therapy patients may generally
require  only  a  single  administration,  we  believe  that  the  first  gene  therapy  product  to  enter  the  market  for  a  particular
indication will likely enjoy a significant commercial advantage and may also obtain market exclusivity under applicable
orphan drug regimes.

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

If  we  do  not  achieve  our  projected  development  goals  in  the  timeframes  we  announce  and  expect,  the

commercialization of our product candidates may be delayed and, as a result, our stock price may decline.

For  planning  purposes,  we  estimate  the  timing  of  the  accomplishment  of  various  scientific,  clinical,  regulatory,
and  other  product  development  goals,  or  development  milestones.  These  development  milestones  may  include  the
commencement  or  completion  of  scientific  studies,  clinical  trials,  the  submission  of  regulatory  filings,  and  approval  for
commercial  sale.  From  time  to  time,  we  publicly  announce  the  expected  timing  of  some  of  these  milestones.  All  these
milestones are based on a variety of assumptions. The actual timing of these milestones can vary dramatically compared to
our estimates, in many cases for reasons beyond our control. If we do not meet these milestones, including those that are
publicly announced, the commercialization of our products may be delayed and, as a result, our stock price may decline.

Risks Related to Our Dependence on Third Parties

We  rely,  and  expect  to  continue  to  rely,  on  third  parties  to  conduct,  supervise,  and  monitor  our  preclinical
studies and clinical trials, and those third parties may not perform satisfactorily, including failing to meet deadlines for
the completion of such trials or failing to comply with regulatory requirements.

We  rely  on  third  parties,  study  sites,  and  others  to  conduct,  supervise,  and  monitor  our  preclinical  and  clinical
trials  for  our  product  candidates  and  do  not  currently  plan  to  independently  conduct  clinical  or  preclinical  trials  of  any
other potential product candidates. We expect to continue to rely on third parties, such as CROs, clinical data management
organizations,  medical  and  scientific  institutions,  and  clinical  and  preclinical  investigators,  to  conduct  our  preclinical
studies and clinical trials.

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While we have agreements governing the activities of such third parties, we have limited influence and control
over  their  actual  performance  and  activities.  For  instance,  our  third-party  service  providers  are  not  our  employees,  and
except  for  remedies  available  to  us  under  our  agreements  with  such  third  parties  we  cannot  control  whether  or  not  they
devote sufficient time and resources to our ongoing clinical, non-clinical, and preclinical programs. If these third parties do
not  successfully  carry  out  their  contractual  duties,  meet  expected  deadlines  or  conduct  our  preclinical  studies  or  clinical
trials  in  accordance  with  regulatory  requirements  or  our  stated  protocols,  if  they  need  to  be  replaced  or  if  the  quality  or
accuracy of the data they obtain is compromised due to the failure to adhere to our protocols, regulatory requirements or
for other reasons, our trials may be repeated, extended, delayed, or terminated, we may not be able to obtain, or may be
delayed  in  obtaining,  marketing  approvals  for  our  product  candidates,  we  may  not  be  able  to,  or  may  be  delayed  in  our
efforts  to,  successfully  commercialize  our  product  candidates,  or  we  or  they  may  be  subject  to  regulatory  enforcement
actions. As a result, our results of operations and the commercial prospects for our product candidates would be harmed,
our costs could increase and our ability to generate revenues could be delayed. To the extent we are unable to successfully
identify  and  manage  the  performance  of  third-party  service  providers  in  the  future,  our  business  may  be  materially  and
adversely affected. Our third-party service providers may also have relationships with other entities, some of which may be
our competitors, for whom they may also be conducting trials or other therapeutic development activities that could harm
our competitive position.

Our  reliance  on  these  third-parties  for  development  activities  will  reduce  our  control  over  these  activities.
Nevertheless,  we  are  responsible  for  ensuring  that  each  of  our  studies  is  conducted  in  accordance  with  the  applicable
protocol, legal, regulatory, and scientific standards, and our reliance on third parties does not relieve us of our regulatory
responsibilities. For example, we will remain responsible for ensuring that each of our trials is conducted in accordance
with  the  general  investigational  plan  and  protocols  for  the  trial.  We  must  also  ensure  that  our  preclinical  trials  are
conducted  in  accordance  with  GLPs,  as  appropriate.  Moreover,  the  FDA  and  comparable  foreign  regulatory  authorities
require us to comply with 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.
Regulatory  authorities  enforce  these  requirements  through  periodic  inspections  of  trial  sponsors,  clinical  and  preclinical
investigators, and trial sites. If we or any of our third-party service providers fail to comply with applicable GCPs or other
regulatory requirements, we or they may be subject to enforcement or other legal actions, the data generated in our trials
may be deemed unreliable and the FDA or comparable foreign regulatory authorities may require us to perform additional
studies.

In  addition,  we  will  be  required  to  report  certain  financial  interests  of  our  third-party  investigators  if  these
relationships  exceed  certain  financial  thresholds  or  meet  other  criteria.  The  FDA  or  comparable  foreign  regulatory
authorities  may  question  the  integrity  of  the  data  from  those  clinical  trials  conducted  by  investigators  who  may  have
conflicts of interest.

We cannot assure that upon inspection by a given regulatory authority, such regulatory authority will determine
that  any  of  our  trials  complies  with  the  applicable  regulatory  requirements.  In  addition,  our  clinical  trials  must  be
conducted  with  product  candidates  that  were  produced  under  GMP  conditions.  Failure  to  comply  with  these  regulations
may require us to repeat clinical trials, which would delay the regulatory approval process. We also are required to register
certain  clinical  trials  and  post  the  results  of  certain  completed  clinical  trials  on  a  government-sponsored  database,
ClinicalTrials.gov, within specified timeframes. Failure to do so can result in enforcement actions and adverse publicity.

Agreements  with  third  parties  conducting  or  otherwise  assisting  with  our  clinical  or  preclinical  studies  might
terminate for a variety of reasons, including a failure to perform by the third parties. If any of our relationships with these
third  parties  terminate,  we  may  not  be  able  to  enter  into  arrangements  with  alternative  providers  or  to  do  so  on
commercially  reasonable  terms.  Switching  or  adding  additional  third  parties  involves  additional  cost  and  requires
management time and focus. In addition, there is a natural transition period when a new third party commences work. As a
result, if we need to enter into alternative arrangements, it could delay our product development activities and adversely
affect our business. Though we carefully manage our relationships with our third parties, there can be no assurance that we
will  not  encounter  challenges  or  delays  in  the  future  or  that  these  delays  or  challenges  will  not  have  a  material  adverse
impact on our business, financial condition and prospects, and results of operations.

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

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We  rely  on  third  parties  for  important  aspects  of  our  development  programs.  If  these  parties  do  not  perform
successfully  or  if  we  are  unable  to  enter  into  or  maintain  key  collaboration  or  other  contractual  arrangements,  our
business could be adversely affected.

We have in the past entered into, and expect in the future to enter into, collaborations with other companies and

academic research institutions with respect to important elements of our development programs.

Any collaboration may pose several risks, including the following:

● collaborators  have  significant  discretion  in  determining  the  efforts  and  resources  that  they  will  apply  to  these

collaborations;

● we may have limited or no control over the design or conduct of clinical trials sponsored by collaborators;
● we may be hampered from entering into collaboration arrangements if we are unable to obtain consent from our

licensors to enter into sublicensing arrangements of technology we have in-licensed;

● if any collaborator does not conduct the clinical trials they sponsor in accordance with regulatory requirements or
stated protocols, we will not be able to rely on the data produced in such trials in our further development efforts;

● collaborators may not perform their obligations as expected;
● collaborators may also have relationships with other entities, some of which may be our competitors;
● collaborators may not pursue development and commercialization of any product candidates or may elect not to
continue  or  renew  development  or  commercialization  programs  based  on  clinical  trial  results,  changes  in  the
collaborators' strategic focus or available funding, or external factors, such as an acquisition, that divert resources
or create competing priorities;

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

● collaborators could develop, independently or with third parties, products that compete directly or indirectly with
our products or product candidates, if, for instance, the collaborators believe that competitive products are more
likely to be successfully developed or can be commercialized under terms that are more economically attractive
than ours;

● our collaboration arrangements may impose restrictions on our ability to undertake other development efforts that

may appear to be attractive to us;

● product candidates discovered in collaboration with us may be viewed by our collaborators as competitive with
their  own  product  candidates  or  products,  which  may  cause  collaborators  to  cease  to  devote  resources  to  the
commercialization of our product candidates;

● a collaborator with marketing and distribution rights that achieves regulatory approval may not commit sufficient

resources to the marketing and distribution of such product or products;

● disagreements with collaborators, including over proprietary rights, contract interpretation or the preferred course
of development, could cause delays or termination of the research, development or commercialization of product
candidates, lead to additional responsibilities for us, delay or impede reimbursement of certain expenses or result
in litigation or arbitration, any of which would be time-consuming and expensive;

● collaborators  may  not  properly  maintain  or  defend  our  intellectual  property  rights  or  may  use  our  proprietary
information  in  such  a  way  as  to  invite  litigation  that  could  jeopardize  or  invalidate  our  rights  or  expose  us  to
potential litigation;

● collaborators may infringe the intellectual property rights of third parties, which may expose us to litigation and

potential liability; and

● collaborations  may  in  some  cases  be  terminated  for  the  convenience  of  the  collaborator  and,  if  terminated,  we
could  be  required  to  expend  additional  funds  to  pursue  further  development  or  commercialization  of  the
applicable product or product candidates.

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If  any  collaboration  does  not  result  in  the  successful  development  and  commercialization  of  products  or  if  a
collaborator were to terminate an agreement with us, we may not receive future research funding or milestone or royalty
payments under that collaboration, and we may lose access to important technologies and capabilities of the collaboration.
All the risks relating to product development, regulatory approval and commercialization described herein also apply to the
activities of any development collaborators.

Risks Related to Our Intellectual Property

We  rely  on  licenses  of  intellectual  property  from  third  parties,  and  such  licenses  may  not  provide  adequate
rights or may not be available in the future on commercially reasonable terms or at all, and our licensors may be unable
to obtain and maintain patent protection for the technology or products that we license from them.

We  currently  are  heavily  reliant  upon  licenses  of  proprietary  technology  from  third  parties  that  is  important  or
necessary to the development of our technology and products, including technology related to our manufacturing process,
our vector platform, our gene cassettes and the therapeutic genes of interest we are using. These and other licenses may not
provide adequate rights to use such technology in all relevant fields of use. Licenses to additional third-party technology
that  may  be  required  for  our  development  programs  may  not  be  available  in  the  future  or  may  not  be  available  on
commercially reasonable terms, which could have a material adverse effect on our business and financial condition.

In  some  circumstances,  we  may  not  have  the  right  to  control  the  preparation,  filing  and  prosecution  of  patent
applications, or to maintain the patents, covering technology that we license from third parties. In addition, some of our
agreements with our licensors require us to obtain consent from the licensor before we can enforce patent rights, and our
licensor  may  withhold  such  consent  or  may  not  provide  it  on  a  timely  basis.  Therefore,  we  cannot  be  certain  that  these
patents and applications will be prosecuted and enforced in a manner consistent with the best interests of our business. In
addition, if third parties who license patents to us fail to maintain such patents, or lose rights to those patents, the rights we
have licensed may be reduced or eliminated.

Our  intellectual  property  licenses  with  third  parties  may  be  subject  to  disagreements  over  contract
interpretation, which could narrow the scope of our rights to the relevant intellectual property or technology or increase
our financial or other obligations to our licensors.

The agreements under which we license intellectual property or technology from third parties are complex, and
certain  provisions  in  such  agreements  may  be  susceptible  to  multiple  interpretations.  The  resolution  of  any  contract
interpretation  disagreement  that  may  arise  could  narrow  what  we  believe  to  be  the  scope  of  our  rights  to  the  relevant
intellectual property or technology, or increase what we believe to be our financial or other obligations under the relevant
agreement, either of which could have a material adverse effect on our business and financial condition.

If we fail to comply with our obligations in our intellectual property licenses with third parties, we could lose

rights that are important to our business.

Our  licensing  arrangements  with  third  parties  may  impose  diligence,  development  and  commercialization
timelines, milestone payment, royalty, insurance, and other obligations on us. If we fail to comply with these obligations,
our counterparties may have the right to terminate these agreements either in part or in whole, in which case we might not
be  able  to  develop,  manufacture  or  market  any  product  that  is  covered  by  these  agreements  or  may  face  other  penalties
under  the  agreements.  Such  an  occurrence  could  materially  adversely  affect  the  value  of  the  product  candidate  being
developed under any such agreement. Termination of these agreements or reduction or elimination of our rights under these
agreements may result in our having to negotiate new or amended agreements with less favorable terms or cause us to lose
our rights under these agreements, including our rights to important intellectual property or technology.

If we are unable to obtain and maintain patent protection for our technology and products, or if the scope of

the patent protection is not sufficiently broad, our ability to successfully commercialize our products may be impaired.
We rely, in part, upon a combination of forms of intellectual property, including in-licensed and owned patents to protect
our intellectual property. Our success depends in a large part on our ability to obtain and maintain this protection in the
U.S., the European Union, and other countries, in part by filing patent applications related to our novel technologies and
product candidates. Our patents may not provide us with any meaningful commercial protection, prevent competitors from
competing with us or otherwise provide us with any competitive advantage. Patents we own currently are and may become
subject to future patent opposition or similar proceedings. For example, we are currently defending a patent case in each of
Canada, the United Kingdom, and the US and have filed Notices of Appeal at the CAFC contesting three FWDs. These
oppositions and future patent oppositions may result in loss of scope of some claims or the entire patent. Our competitors
may be able to circumvent our owned or licensed patents by developing similar or alternative technologies or products in a
non-infringing manner.

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Successful  challenges  to  our  patents  may  result  in  loss  of  exclusivity  or  freedom  to  operate  or  in  patent  claims
being narrowed, 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 products.

The patent prosecution process is expensive, time-consuming, and uncertain, and we may not be able to file and
prosecute all necessary or desirable patent applications at a reasonable cost or in a timely manner. It is also possible that we
will  fail  to  identify  patentable  aspects  of  our  research  and  development  output  before  it  is  too  late  to  obtain  patent
protection.  Additionally,  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 licensed patent portfolio may not provide us with sufficient rights to exclude
others from commercializing products similar or identical to ours.

The  patent  position  of  biotechnology  and  pharmaceutical  companies  generally  is  highly  uncertain,  involves
complex legal and factual questions and has in recent years been the subject of much litigation. In addition, the laws of
foreign countries may not protect our rights to the same extent as the laws of the U.S.. For example, EU patent law with
respect  to  the  patentability  of  methods  of  treatment  of  the  human  body  is  more  limited  than  U.S.  law.  Publications  of
discoveries  in  the  scientific  literature  often  lag  the  actual  discoveries,  and  patent  applications  in  the  U.S.  and  other
jurisdictions  are  typically  not  published  until  18  months  after  their  priority  date,  or  in  some  cases  at  all.  Therefore,  we
cannot  know  with  certainty  whether  we  were  the  first  to  make  the  inventions  or  that  we  were  the  first  to  file  for  patent
protection  of  the  inventions  claimed  in  our  owned  or  licensed  patents  or  pending  patent  applications.  As  a  result,  the
issuance, scope, validity, enforceability, and commercial value of our patent rights are highly uncertain. Our pending and
future patent applications may not result in patents being issued that protect our technology or products, in whole or in part,
or  which  effectively  prevent  others  from  commercializing  competitive  technologies  and  products.  Changes  in  either  the
patent laws or interpretation of the patent laws in the European Union, the U.S. or other countries may diminish the value
of  our  patents  or  narrow  the  scope  of  our  patent  protection.  Our  inability  to  obtain  and  maintain  appropriate  patent
protection for any one of our products could have a material adverse effect on our business, financial condition, and results
of operations.

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

Competitors may infringe our owned or licensed patents or other intellectual property. To counter infringement or
unauthorized  use,  we  may  be  required  to  file  infringement  claims,  which  can  be  expensive  and  time  consuming.  An
adverse result in any litigation proceeding could put one or more of our patents at risk of being invalidated, maintained in
more narrowly amended form or interpreted narrowly.

Even  if  resolved  in  our  favor,  litigation  or  other  legal  proceedings  relating  to  intellectual  property  claims  may
cause  us  to  incur  significant  expenses,  increase  our  operating  losses,  reduce  available  resources,  and  could  distract  our
technical and management personnel from their normal responsibilities. In addition, there could be public announcements
of the results of hearings, motions or other interim proceedings or developments, which could have an adverse effect on the
price of our ordinary shares.

Third parties may initiate legal proceedings alleging that we are infringing their intellectual property rights, the
outcome  of  which  would  be  uncertain  and  could  have  a  material  adverse  effect  on  the  success  of  our  business.  For
example, outside of the U.S. two of the patents we own are subject to patent opposition. If these or future oppositions are
successful or if we are found to otherwise infringe a third party's intellectual property rights, we could be required to obtain
a license from such third party to continue developing and marketing our products and technology. We may not be able to
obtain the required license on commercially reasonable terms or at all. Even if we could obtain a license, it could be non-
exclusive, thereby giving our competitors access to the same technologies licensed to us. We could be forced, including by
court  order,  to  cease  commercializing  the  infringing  technology  or  product  or  otherwise  to  cease  using  the  relevant
intellectual property. 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
our product candidates or force us to cease or materially modify some of our business operations, which could materially
harm our business. Claims that we have misappropriated the confidential information or trade secrets of third parties could
have a similar negative impact on our business.

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For example, we are aware of patents owned by third parties that relate to some aspects of our programs that are
still  in  development.  In  some  cases,  because  we  have  not  determined  the  final  methods  of  manufacture,  the  method  of
administration or the therapeutic compositions for these programs, we cannot determine whether rights under such third-
party  patents  will  be  needed.  In  addition,  in  some  cases,  we  believe  that  the  claims  of  these  patents  are  invalid  or  not
infringed or will expire before commercialization. However, if such patents are needed and found to be valid and infringed,
we could be required to obtain licenses, which might not be available on commercially reasonable terms, or to cease or
delay commercializing certain product candidates, or to change our programs to avoid infringement.

If we are unable to protect the confidentiality of our proprietary information and know-how, the value of our

technology and products could be adversely affected.

In  addition  to  seeking  patent  protection,  we  also  rely  on  other  proprietary  rights,  including  protection  of  trade
secrets, know-how and confidential and proprietary information. To maintain the confidentiality of our trade secrets and
proprietary information, we enter into confidentiality agreements with our employees, consultants, collaborators and other
third  parties  who  have  access  to  our  trade  secrets.  Our  agreements  with  employees  also  provide  that  any  inventions
conceived  by  the  individual  while  rendering  services  to  us  will  be  our  exclusive  property.  However,  we  may  not  obtain
these agreements in all circumstances, and individuals with whom we have these agreements may not comply with their
terms.  The  assignment  of  intellectual  property  rights  may  not  be  self-executing,  or  the  assignment  agreements  may  be
breached, and we may be forced to bring claims against third parties, or defend claims that they may bring against us, to
determine the ownership of what we regard as our intellectual property. In addition, in the event of unauthorized use or
disclosure of our trade secrets or proprietary information, these agreements, even if obtained, may not provide meaningful
protection,  particularly  for  our  trade  secrets  or  other  confidential  information.  To  the  extent  that  our  employees,
consultants,  or  contractors  use  technology  or  know-how  owned  by  third  parties  in  their  work  for  us,  disputes  may  arise
between us and those third parties as to the rights in related inventions.

 Adequate remedies may not exist in the event of unauthorized use or disclosure of our confidential information
including a breach of our confidentiality agreements. 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 in and
outside  of  the  U.S.  are  less  willing  or  unwilling  to  protect  trade  secrets.  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 from
using  that  technology  or  information  to  compete  with  us.  The  disclosure  of  our  trade  secrets  or  the  independent
development  of  our  trade  secrets  by  a  competitor  or  other  third  party  would  impair  our  competitive  position  and  may
materially harm our business, financial condition, results of operations, stock price and prospects.

Our reliance on third parties may require us to share our trade secrets, which could increase the possibility that

a competitor will discover them or that our trade secrets will be misappropriated or disclosed.

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

In addition, these agreements typically restrict the ability of our collaborators, advisors, and consultants to publish
data  potentially  relating  to  our  trade  secrets.  Our  academic  collaborators  typically  have  rights  to  publish  data,  if  we  are
notified in advance and may delay publication for a specified time to secure our intellectual property rights arising from the
collaboration.  In  other  cases,  publication  rights  are  controlled  exclusively  by  us,  although  in  some  cases  we  may  share
these rights with other parties. We also conduct joint research and development programs that may require us to share trade
secrets under the terms of our research and development partnerships or similar agreements.

Some courts inside and outside the U.S. are less willing or unwilling to protect trade secrets. If any of our trade
secrets were to be lawfully obtained or independently developed by a competitor, we would have no right to prevent them,
or those with whom they communicate, from using that technology or information to compete with us.

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Risks Related to Business Development

Our business development strategy may not produce the cash flows expected or could result in additional costs

and challenges.

Any  business  development  transaction  could  expose  us  to  unknown  liabilities  and  risks,  and  we  may  incur
additional costs and expenses necessary to address an acquired company’s failure to comply with laws and governmental
rules and regulations. We could incur additional costs related to resources to align our business practices and operations.
Moreover, we cannot assure that the anticipated benefits of any acquisition would be realized in a timely manner, if at all.

Risks Related to Pricing and Reimbursement

We,  and  our  commercial  partner,  face  uncertainty  related  to  insurance  coverage  of,  and  pricing  and

reimbursement for HEMGENIX™ and other product candidates for which we may receive marketing approval.

We  anticipate  that  the  cost  of  treatment  using  our  product  candidates  will  be  significant.  We  expect  that  most
patients and their families will not be capable of paying for our products themselves. There will be no commercially viable
market  for  our  product  candidates  without  reimbursement  from  third  party  payers,  such  as  government  health
administration authorities, private health insurers and other organizations. Even if there is a commercially viable market, if
the level of third-party reimbursement is below our expectations, most patients may not be able to afford treatment with our
products and our revenues and gross margins will be adversely affected, and our business will be harmed.

Government  authorities  and  other  third-party  payers,  such  as  private  health  insurers  and  health  maintenance
organizations,  decide  for  which  medications  they  will  pay  and,  subsequently,  establish  reimbursement  levels.
Reimbursement systems vary significantly by country and by region, and reimbursement approvals must be obtained on a
country-by-country  basis.  Government  authorities  and  third-party  payers  have  attempted  to  control  costs  by  limiting
coverage and the amount of reimbursement for particular medications and procedures and negotiating or requiring payment
of  manufacturer  rebates.  Increasingly,  third  party  payers  require  drug  companies  to  provide  them  with  predetermined
discounts from list prices, are exerting influence on decisions regarding the use of particular treatments and are limiting
covered indications. Additionally, in the U.S. and some foreign jurisdictions, pending or potential legislative and regulatory
changes  regarding  the  healthcare  system  and  insurance  coverage  could  result  in  more  rigorous  coverage  criteria  and
downward pressure on drug prices, and may affect our ability to profitably sell any products for which we obtain marketing
approval.  For  example,  on  November  27,  2020,  CMS  issued  an  interim  final  rule  implementing  a  Most  Favored  Nation
(“MFN”) payment model under which reimbursement for certain Medicare Part B drugs and biologicals will be based on a
price that reflects the lowest per capita GDP-adjusted price of any non-U.S. member country of the OECD with a GDP per
capita  that  is  at  least  sixty  percent  of  the  U.S.  GDP  per  capita.  While  this  rule  now  has  been  rescinded,  government
negotiation of certain Medicare drug pricing continues to be the focus of recent proposed legislation.

The pricing review period and pricing negotiations for new medicines take considerable time and have uncertain
results.  Pricing  review  and  negotiation  usually  begins  only  after  the  receipt  of  regulatory  marketing  approval,  and  some
authorities  require  approval  of  the  sale  price  of  a  product  before  it  can  be  marketed.  In  some  markets,  particularly  the
countries  of  the  European  Union,  prescription  pharmaceutical  pricing  remains  subject  to  continuing  direct  governmental
control and to drug reimbursement programs even after initial approval is granted and price reductions may be imposed.
Prices of medical products may also be subject to varying price control mechanisms or limitations as part of national health
systems if products are considered not cost-effective or where a drug company's profits are deemed excessive. In addition,
pricing  and  reimbursement  decisions  in  certain  countries  can  lead  to  mandatory  price  reductions  or  additional
reimbursement  restrictions  in  other  countries.  Because  of  these  restrictions,  any  product  candidates  for  which  we  may
obtain marketing approval may be subject to price regulations that delay or prohibit our or our partners' commercial launch
of the product in a particular jurisdiction. In addition, we or any collaborator may elect to reduce the price of our products
to  increase  the  likelihood  of  obtaining  reimbursement  approvals.  If  countries  impose  prices,  which  are  not  sufficient  to
allow us or any collaborator to generate a profit, we or any collaborator may refuse to launch the product in such countries
or withdraw the product from the market. If pricing is set at unsatisfactory levels, or if the price decreases, our business
could be harmed, possibly materially. If we fail to obtain and sustain an adequate level of coverage and reimbursement for
our products by third party payers, our ability to market and sell our products could be adversely affected and our business
could be harmed.

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Due  to  the  generally  limited  addressable  market  for  our  target  orphan  indications  and  the  potential  for  our
therapies  to  offer  therapeutic  benefit  in  a  single  administration,  we  face  uncertainty  related  to  pricing  and
reimbursement for HEMGENIX™ and other product candidates.

The relatively small market size for orphan indications and the potential for long-term therapeutic benefit from a
single  administration  present  challenges  to  pricing  review  and  negotiation  of  our  product  candidates  for  which  we  may
obtain  marketing  authorization.  Most  of  our  product  candidates  target  rare  diseases  with  relatively  small  patient
populations.  If  we  are  unable  to  obtain  adequate  levels  of  reimbursement  relative  to  these  small  markets,  our  ability  to
support  our  development  and  commercial  infrastructure  and  to  successfully  market  and  sell  our  product  candidates  for
which we may obtain marketing approval could be adversely affected.

We also anticipate that many or all our gene therapy product candidates may provide long-term, and potentially
curative  benefit,  with  a  single  administration.  This  is  a  different  paradigm  than  that  of  other  pharmaceutical  therapies,
which often require an extended course of treatment or frequent administration. As a result, governments and other payers
may be reluctant to provide the significant level of reimbursement that we seek at the time of administration of our gene
therapies or may seek to tie reimbursement to clinical evidence of continuing therapeutic benefit over time. Additionally,
there may be situations in which our product candidates will need to be administered more than once, which may further
complicate  the  pricing  and  reimbursement  for  these  treatments.  In  addition,  considering  the  anticipated  cost  of  these
therapies, governments and other payers may be particularly restrictive in making coverage decisions. These factors could
limit our commercial success and materially harm our business.

Risks Related to Our Financial Position and Need for Additional Capital

We had a loss in the current year, gain in the year ended December 31, 2021, but incurred significant losses in

previous years and expect to incur losses over the next several years and may never achieve or maintain profitability.

We had net loss of $126.8 million in the year ended December 31, 2022, incurred a gain of $329.6 million in 2021
and  incurred  a  net  loss  of  $125.0  million  in  2020.  As  of  December  31,  2022,  we  had  an  accumulated  deficit  of  $581.9
million. In the past, we have financed our operations primarily through the sale of equity securities and convertible debt,
venture  loans,  upfront  payments  from  our  collaboration  partners  and,  to  a  lesser  extent,  subsidies  and  grants  from
governmental agencies and fees for services. We expect to finance our operations in 2023 primarily from our existing cash
resources  including  payments  we  collected  and  expect  to  collect  in  relation  to  the  CSL  Behring  Agreement.  We  have
devoted substantially all our financial resources and efforts to research and development, including preclinical studies and
clinical trials. We expect to continue to incur significant expenses and losses over the next several years, and our net losses
may fluctuate significantly from quarter to quarter and year to year.

We anticipate that our expenses will increase for the foreseeable future and will include costs related to:
● advancing AMT-130 for our Huntington’s disease gene therapy program into phase III clinical study;
● advancing  our  gene  therapy  programs  for  rTLE,  SOD1-ALS  and  Fabry  disease  into  Phase  I/II  clinical

studies;

● potentially acquiring or in-licensing rights to new therapeutic targets, product candidates and technologies;
● making potential future milestone payments related to the acquisition of Corlieve, if any;
● advancing preclinical research and development for gene therapy product candidates targeting other diseases;

and

● continuing  to  invest  in  expanding,  developing  and  optimizing  our  manufacturing  capabilities  and  other

enabling technologies, such as next-generation viral vectors, promoters and re-dosing.

We may never succeed in these activities and, even if we do, may never generate revenues that are sufficient to
achieve or sustain profitability. Our failure to become and remain profitable would depress the value of our company and
could  impair  our  ability  to  expand  our  business,  maintain  our  research  and  development  efforts,  diversify  our  product
offerings, or even continue our operations.

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We  will  likely  need  to  raise  additional  funding,  which  may  not  be  available  on  acceptable  terms,  or  at  all.
Failure to obtain capital when needed may force us to delay, limit or terminate our product development efforts or other
operations which could have a material adverse effect on our business, financial condition, results of operations and
cash flows.

We expect to incur significant expenses in connection with our on-going activities and that we will likely need to
obtain substantial additional funding in connection with our continuing operations. In addition, we have based our estimate
of our financing requirements on assumptions that may prove to be wrong, and we could use our capital resources sooner
than we currently expect.

Adequate capital may not be available to us when needed or may not be available on acceptable terms. Our ability
to  obtain  debt  financing  may  be  limited  by  covenants  we  have  made  under  our  2021  Restated  Facility  with  Hercules
Capital  Inc.  (“Hercules”)  that  we  entered  into  on  December  15,  2021  when  the  Company  and  Hercules  amended  and
restated the 2021 Amended Facility (the “2021 Restated Facility”) and our pledge to Hercules of substantially all our assets
as  collateral.  If  we  raise  additional  capital  through  the  sale  of  equity  or  convertible  debt  securities,  our  shareholders'
ownership  interest  could  be  diluted,  and  the  terms  of  these  securities  may  include  liquidation  or  other  preferences  that
adversely affect the rights of holders of our ordinary shares.

If  we  raise  additional  funds  through  collaborations,  strategic  alliances,  or  marketing,  distribution,  or  licensing
arrangements  with  third  parties,  we  may  have  to  issue  additional  equity,  relinquish  valuable  rights  to  our  technologies,
future revenue streams, products, or product candidates, or grant licenses on terms that may not be favorable to us. If we
are  unable  to  raise  capital  when  needed  or  on  attractive  terms,  we  could  be  forced  to  delay,  reduce,  or  eliminate  our
research and development programs or any future commercialization efforts, which would have a negative impact on our
financial condition, results of operations and cash flows.

Our existing and any future indebtedness could adversely affect our ability to operate our business.

As of December 31, 2022, we had $100.0 million of outstanding principal of borrowings under the 2021 Restated
Facility, which we are required to repay in full in December 2025. We could in the future incur additional debt obligations
beyond our borrowings from Hercules. Our existing loan obligations, together with other similar obligations that we may
incur in the future, could have significant adverse consequences, including:

● requiring us to dedicate a portion of our cash resources to the payment of interest and principal, reducing money
available  to  fund  working  capital,  capital  expenditures,  research  and  development  and  other  general  corporate
purposes;

● increasing our vulnerability to adverse changes in general economic, industry and market conditions;
● subjecting us to restrictive covenants that may reduce our ability to take certain corporate actions or obtain further

debt or equity financing;

● limiting  our  flexibility  in  planning  for,  or  reacting  to,  changes  in  our  business  and  the  industry  in  which  we

compete; and

● placing us at a disadvantage compared to our competitors that have less debt or better debt servicing options.

We may not have sufficient funds, and may be unable to arrange for additional financing, to pay the amounts due
under  our  existing  loan  obligations.  Failure  to  make  payments  or  comply  with  other  covenants  under  our  existing  debt
could result in an event of default and acceleration of amounts due. Under the 2021 Restated Facility, the occurrence of an
event that would reasonably be expected to have a material adverse effect on our business, operations, assets, or condition
is an event of default. If an event of default occurs and the lender accelerates the amounts due, we may not be able to make
accelerated payments, and the lender could seek to enforce security interests in the collateral securing such indebtedness,
which includes substantially all our assets.

Risks Related to Other Legal Compliance Matters

Our relationships with employees, customers and third-parties is subject to applicable laws and regulations, the
non-compliance of any of which could have a material adverse effect on our business, financial condition, and results
of operations.

Healthcare  providers,  physicians,  other  practitioners,  and  third-party  payers  will  play  a  primary  role  in  the
recommendation and prescription of any products for which we obtain marketing approval. Our future arrangements with
third  party  payers  and  customers  may  expose  us  to  broadly  applicable  anti-bribery  laws,  including  the  Foreign  Corrupt
Practices  Act,  as  well  as  fraud  and  abuse  and  other  U.S.  and  international  healthcare  laws  and  regulations  that  may
constrain  the  business  or  financial  arrangements  and  relationships  through  which  we  would  be  able  to  market,  sell  and
distribute any products for which we obtain marketing approval.

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Efforts  to  ensure  that  our  business  arrangements  with  third  parties  will  comply  with  applicable  laws  and
regulations  could  involve  substantial  costs.  If  our  operations,  or  the  activities  of  our  collaborators,  distributors  or  other
third-party agents are found to be in violation of any of these laws or any other governmental regulations that may apply to
us, we may be subject to significant civil, criminal, and administrative penalties, damages, fines, imprisonment, exclusion
from participation in government funded healthcare programs and the curtailment or restructuring of our operations.

Additionally, we are subject to various labor and employment laws and regulations. These laws and regulations
relate to matters such as employment discrimination, wage and hour laws, requirements to provide meal and rest periods or
other  benefits,  family  leave  mandates,  employee  and  independent  contractor  classification  rules,  requirements  regarding
working conditions and accommodations to certain employees, citizenship or work authorization and related requirements,
insurance and workers’ compensation rules, healthcare laws, scheduling notification requirements and anti-discrimination
and anti-harassment laws. Complying with these laws and regulations, including ongoing changes thereto, subjects us to
substantial expense and non-compliance could expose us to significant liabilities. In particular, we are subject to allegations
of Sarbanes-Oxley whistleblower retaliation and employment discrimination and retaliation, and we may in the future be
subject to additional claims of non-compliance of similar or other Laws and regulations.

The costs associated with a violation of any of the foregoing could be substantial and could cause irreparable harm
to our reputation or otherwise have a material adverse effect on our business, financial condition, and results of operations.

We  are  subject  to  laws  governing  data  protection  in  the  different  jurisdictions  in  which  we  operate.  The
implementation of such data protection regimes is complex, and should we fail to fully comply, we may be subject to
penalties that may have an adverse effect on our business, financial condition, and results of operations.

Many national and state laws govern the privacy and security of health information and other personal and private
information. They often differ from each other in significant ways. For instance, the EU has adopted a comprehensive data
protection law called the General Data Protection Regulation (“GDPR”) that took effect in May 2018. The GDPR, together
with the national legislation of the EU member states governing the processing of personal data, impose strict obligations
and restrictions on the ability to collect, analyze and transfer personal data, including health data from clinical trials and
adverse event reporting. In particular, these obligations and restrictions concern the consent of the individuals to whom the
personal  data  relates,  the  information  provided  to  the  individuals,  the  transfer  of  personal  data  out  of  the  EU,  security
breach  notifications,  security  and  confidentiality  of  the  personal  data,  and  imposition  of  substantial  potential  fines  for
breaches of the data protection obligations. The GDPR imposes penalties for non-compliance of up to the greater of EUR
20.0 million or 4% of worldwide revenue. Data protection authorities from the different EU member states may interpret
the GDPR and national laws differently and impose additional requirements, which add to the complexity of processing
personal data in the EU. Guidance on implementation and compliance practices are often updated or otherwise revised. The
significant costs of compliance with risk of regulatory enforcement actions under, and other burdens imposed by the GDPR
as well as under other regulatory schemes throughout the world related to privacy and security of health information and
other personal and private data could have an adverse impact on our business, financial condition, and results of operations.

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Product liability lawsuits could cause us to incur substantial liabilities and to limit commercialization of our

therapies.

We face an inherent risk of product liability related to the testing of our product candidates in human clinical trials
and in connection with product sales. If we cannot successfully defend ourselves against claims that our product candidates
or products caused injuries, we will incur substantial liabilities. Regardless of merit or eventual outcome, liability claims
may result in:

● decreased demand for any product candidates or products that we develop or sell;
● injury to our reputation and significant negative media attention;
● negative publicity or public opinion surrounding gene therapy;
● withdrawal of clinical trial participants or sites, or discontinuation of development programs;
● significant costs to defend the related litigation;
● substantial monetary awards to trial participants or patients;
● loss of revenue;
● initiation of investigations, and enforcement actions by regulators; and product recalls, withdrawals, revocation of

approvals, or labeling, marketing, or promotional restrictions;

● reduced resources of our management to pursue our business strategy; and
● the inability to further develop or commercialize any products that we develop.

Dependent upon the country where the clinical trial is conducted, we currently hold coverages ranging from EUR
500,000 to EUR 10,000,000 per occurrence. Such coverage may not be adequate to cover all liabilities that we may incur.
We  may  need  to  increase  our  insurance  coverage  as  we  expand  our  clinical  trials.  In  addition,  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. In the event insurance coverage is insufficient to cover liabilities that we may incur, it
could have a material adverse effect on our business, financial condition, and results of operations.

Healthcare  legislative  and  regulatory  reform  measures  may  have  a  material  adverse  effect  on  our  financial

operations.

Our industry is highly regulated and changes in law may adversely impact our business, operations, or financial
results. The Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act,
or  the  PPACA,  is  a  sweeping  measure  intended  to,  among  other  things,  expand  healthcare  coverage  within  the  U.S.,
primarily  through  the  imposition  of  health  insurance  mandates  on  employers  and  individuals  and  expansion  of  the
Medicaid program. Several provisions of the law may affect us and increase certain of our costs.

In  addition,  other  legislative  changes  have  been  adopted  since  the  PPACA  was  enacted.  These  changes  include
aggregate reductions in Medicare payments to providers of 2% per fiscal year, which went into effect on April 1, 2013,
Congress subsequently has extended the period over which these reductions are in effect. While President Biden previously
signed  legislation  temporarily  to  eliminate  this  reduction  through  the  end  of  2021,  recent  legislation  will  restart  the
reductions, which will thereafter remain in effect through 2031 unless additional congressional action is taken. In January
2013,  President  Obama  signed  into  law  the  American  Taxpayer  Relief  Act  of  2012,  which,  among  other  things,  further
reduced Medicare payments to several types of providers and increased the statute of limitations period for the government
to recover overpayments to providers from three to five years. These laws may result in additional reductions in Medicare
and other healthcare funding, which could have a material adverse effect on our customers and, accordingly, our financial
operations.

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We anticipate that the PPACA, as well as other healthcare reform measures that may be adopted in the future, may
result  in  more  rigorous  coverage  criteria  and  additional  downward  pressure  on  pricing  and  the  reimbursement  our
customers  may  receive  for  our  products,  and  increased  manufacturer  rebates.  Further,  there  have  been,  and  there  may
continue to be, judicial and Congressional challenges to certain aspects of the PPACA. For example, the U.S. Tax Cuts and
Jobs  Act  of  2017  includes  a  provision  repealing,  effective  January  1,  2019,  the  tax-based  shared  responsibility  payment
imposed by the Affordable Care Act on certain individuals who fail to maintain qualifying health coverage for all or part of
a  year  that  is  commonly  referred  to  as  the  "individual  mandate".  Additional  legislative  and  regulatory  changes  to  the
PPACA, its implementing regulations and guidance and its policies, remain possible in the 117th U.S. Congress and under
the Biden Administration. However, it remains unclear how any new legislation or regulation might affect the prices we
may obtain for any of our product candidates for which regulatory approval is obtained. Any reduction in reimbursement
from  Medicare  and  other  government  programs  may  result  in  a  similar  reduction  in  payments  from  private  payers.  The
implementation  of  cost  containment  measures  or  other  healthcare  reforms  may  prevent  us  from  being  able  to  generate
revenue, attain profitability or commercialize our products.

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. The size and complexity of our information technology systems, and those of
our collaborators, contractors and consultants, and the large amounts of confidential information stored on those systems,
make such systems vulnerable to service interruptions or to security breaches from inadvertent or intentional actions by our
employees, third-party vendors and/or business partners, or from cyber-attacks by malicious third parties. Cyber-attacks are
increasing in their frequency, sophistication, and intensity, and have become increasingly difficult to detect. Cyber-attacks
could  include  the  deployment  of  harmful  malware,  ransomware,  denial-of-service  attacks,  social  engineering,  and  other
means to affect service reliability and threaten the confidentiality, integrity, and availability of information. Cyber-attacks
also could include phishing attempts or e-mail fraud to cause payments or information to be transmitted to an unintended
recipient. The increased number of employees working remotely due to Covid might increase our vulnerability to the above
risk.

While  we  have  experienced  and  addressed  system  failures,  cyber-attacks,  and  security  breaches  in  the  past,  we
have not experienced a system failure, accident, cyber-attack, or security breach that has resulted in a material interruption
in our operations to date. In the future, such events could result in a material disruption of our development programs and
our business operations, whether due to a loss of our trade secrets, data, or other proprietary information or other similar
disruptions.  Additionally,  any  such  event  that  leads  to  unauthorized  access,  use  or  disclosure  of  personal  information,
including  personal  information  regarding  our  patients  or  employees,  could  harm  our  reputation,  cause  us  not  to  comply
with federal and/or state breach notification laws and foreign law equivalents and otherwise subject us to liability under
laws  and  regulations  that  protect  the  privacy  and  security  of  personal  information.  Security  breaches  and  other
inappropriate access can be difficult to detect, and any delay in identifying them may lead to increased harm of the type
described  above.  While  we  have  implemented  security  measures  to  protect  our  information  technology  systems  and
infrastructure,  there  can  be  no  assurance  that  such  measures  will  prevent  service  interruptions  or  security  breaches  that
could  adversely  affect  our  business  and  the  further  development  and  commercialization  of  our  product  and  product
candidates could be delayed.

Climate change, environmental, social and governance and sustainability initiatives may result in regulatory or
structural industry changes that could require significant operational changes and expenditures, reduce demand for the
Company’s products and adversely affect our business, financial condition, and results of operations.

Greenhouse  gases  may  have  an  adverse  effect  on  global  temperatures,  weather  patterns,  and  the  frequency  and
severity of extreme weather and natural disasters. Such events could have a negative effect on our business. Concern over
climate change may result in new or additional legislative and regulatory requirements to reduce or mitigate the effects of
climate change on the environment, which could result in future tax, transportation cost, and utility increases. Moreover,
natural disasters and extreme weather conditions may impact the productivity of our facilities, the operation of our supply
chain, or consumer buying patterns. Any of these risks could have a material adverse effect on our business.

Climate  change,  environmental,  social  and  governance  and  sustainability  initiatives  may  result  in  regulatory  or
structural  industry  changes  that  could  require  significant  operational  changes  and  expenditures,  reduce  demand  for  the
Company’s products and adversely affect our business, financial condition, and results of operations.

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Climate  change,  environmental,  social  and  governance  and  sustainability  are  a  growing  global  movement.
Continuing political and social attention to these issues has resulted in both existing and pending international agreements
and national, regional and local legislation, regulatory measures, reporting obligations and policy changes. Also, there is
increasing  societal  pressure  in  some  of  the  areas  where  we  operate,  to  limit  greenhouse  gas  emissions  as  well  as  other
global  initiatives.  These  agreements  and  measures,  including  the  Paris  Climate  Accord,  may  require,  or  could  result  in
future  legislation,  regulatory  measures  or  policy  changes  that  would  require  operational  changes,  taxes,  or  purchases  of
emission  credits  to  reduce  emission  of  greenhouse  gases  from  our  operations,  which  may  result  in  substantial  capital
expenditures.

Furthermore,  increasing  attention  to  climate  change,  ESG  and  sustainability  has  resulted  in  governmental
investigations, and public and private litigation, which could increase our costs or otherwise adversely affect our business
or  results  of  operations.  In  addition,  organizations  that  provide  information  to  investors  on  corporate  governance  and
related matters have developed ratings processes for evaluating companies on their approach to ESG matters. Such ratings
are  used  by  some  investors  to  inform  their  investment  and  voting  decisions.  Unfavorable  ESG  ratings  may  lead  to
increased negative investor sentiment toward us, which could have a negative impact on the price of our securities and our
access to and costs of capital.

Any  or  all  of  these  ESG  and  sustainability  initiatives  may  result  in  significant  operational  changes  and
expenditures,  reduced  demand  for  our  products,  cause  us  reputational  harm,  and  could  materially  adversely  affect  our
business, financial condition, and results of operations.

Risks Related to Employee Matters and Managing Growth

Our future success depends on our ability to retain key executives, technical staff, and other employees and to

attract, retain and motivate qualified personnel.

Our  future  growth  and  success  will  depend  in  large  part  on  our  continued  ability  to  attract,  retain,  manage  and
motivate our employees. The loss of the services of any member of our senior management or the inability to hire or retain
experienced management personnel could adversely affect our ability to execute our business plan and harm our operating
results.  We  are  highly  dependent  on  hiring,  training,  retaining  and  motivating  key  personnel  to  lead  our  research  and
development, clinical operations, and manufacturing efforts. Although we have entered into employment agreements with
our key personnel, each of them may terminate their employment on short notice. We do not maintain key person insurance
for any of our senior management or employees.

The  loss  of  the  services  of  our  key  employees  could  impede  the  achievement  of  our  research  and  development
objectives  and  seriously  harm  our  ability  to  successfully  implement  our  business  strategy.  Furthermore,  replacing  senior
management  and  key  employees  may  be  difficult  and  may  take  an  extended  period  because  of  the  limited  number  of
individuals  in  our  industry  with  the  breadth  and  depth  of  skills  and  experience  required  to  successfully  develop  gene
therapy  products.  Competition  to  hire  from  this  limited  pool  is  intense,  and  we  may  be  unable  to  hire,  train,  retain  or
motivate these key personnel on acceptable terms.

The  competition  for  qualified  personnel  in  the  pharmaceutical  field  is  intense,  and  there  is  a  limited  pool  of
qualified potential employees to recruit. Due to this intense competition, we may be unable to continue to attract and retain
qualified personnel necessary for the development of our business or to recruit suitable replacement personnel. If we are
unable to continue to attract and retain high quality personnel, our ability to pursue our business may be harmed and our
growth strategy may be limited.

Additionally, we are reliant on our employees, contractors, consultants, vendors and other parties with whom we
have relationships to behave ethically and within the requirements of the law. The failure of any employee or other such
third parties to act within the bounds of the applicable laws, regulations, agreements, codes and other requirements, or any
misconduct or illegal actions or omissions by such persons, could materially damage our business.

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Risks Related to Our Ordinary Shares

The price of our ordinary shares has been and may in the future be volatile and fluctuate substantially.

Our share price has been and may in the future be volatile. From the start of trading of our ordinary shares on the
Nasdaq Global Select Market on February 4, 2014 through February 23, 2023, the sale price of our ordinary shares ranged
from a high of $82.49 to a low of $4.72. The closing price on February 23, 2022, was $20.06 per ordinary share. The stock
market  in  general  and  the  market  for  smaller  biopharmaceutical  companies  in  particular,  have  experienced  extreme
volatility  that  has  often  been  unrelated  to  the  operating  performance  of  particular  companies.  The  market  price  for  our
ordinary shares may be influenced by many factors, including:

● the success of competitive products or technologies;
● results of clinical trials of our product candidates or those of our competitors;
● public perception of gene therapy;
● regulatory delays and greater government regulation of potential products due to adverse events;
● regulatory or legal developments in the EU, the U.S., 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 product candidates or clinical development programs;
● 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;

● variations in our financial results or those of companies that are perceived to be similar to us;
● changes in the structure of healthcare payment systems;
● market conditions in the pharmaceutical and biotechnology sectors;
● mergers, acquisitions, licensing, and collaboration activity among our peer companies in the pharmaceutical and

biotechnology sectors; and

● general economic, industry and market conditions.

Our directors, executive officers, and major shareholders, if they choose to act together, will continue to have a

significant degree of control with respect to matters submitted to shareholders for approval.

Our directors, executive officers and major shareholders holding more than 5% of our outstanding ordinary shares,
in the aggregate, beneficially own approximately 39.4% of our issued shares (including such shares to be issued in relation
to  exercisable  options  to  purchase  ordinary  shares)  as  at  December  31,  2022.  As  a  result,  if  these  shareholders  were  to
choose to act together, they may be able, as a practical matter, to control many matters submitted to our shareholders for
approval, as well as our management and affairs. For example, these persons, if they choose to act together, could control
the  election  of  the  board  directors  and  the  approval  of  any  merger,  consolidation,  or  sale  of  all  or  substantially  all  our
assets. These shareholders may have interests that differ from those of other of our shareholders and conflicts of interest
may arise.

Provisions of our articles of association or Dutch corporate law might deter acquisition bids for us that might

be considered favorable and prevent or frustrate any attempt to replace our board.

Certain provisions of our articles of association may make it more difficult for a third party to acquire control of

us or effect a change in our board. These provisions include:

● staggered terms of our directors;
● a provision that our directors may only be removed at a general meeting of shareholders by a two-thirds majority

of votes cast representing more than half of the issued share capital of the Company; and

● a requirement that certain matters, including an amendment of our articles of association, may only be brought to

our shareholders for a vote upon a proposal by our board.

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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 earnings, if any, will be reinvested in our business and that dividends will not
be paid until we have an established revenue stream to support continuing dividends. Accordingly, shareholders cannot rely
on dividend income from our ordinary shares and any returns on an investment in our ordinary shares will likely depend
entirely upon any future appreciation in the price of our ordinary shares.

If we fail to maintain an effective system of internal controls, we may be unable to accurately report our results
of operations or prevent fraud or fail to meet our reporting obligations, and investor confidence and the market price of
our ordinary shares may be materially and adversely affected.

If we fail to maintain the adequacy of our internal control over financial reporting, we may not be able to conclude
on an ongoing basis that we have effective internal control over financial reporting. If we fail to maintain effective internal
control over financial reporting, we could experience material misstatements in our financial statements and fail to meet
our reporting obligations, which would likely cause investors to lose confidence in our reported financial information. This
could in turn limit our access to capital markets, harm our results of operations, and lead to a decline in the trading price of
our ordinary shares. Additionally, ineffective internal control over financial reporting could expose us to increased risk of
fraud or misuse of corporate assets and subject us to potential delisting from The Nasdaq Global Select Market, regulatory
investigations and civil or criminal sanctions. Our reporting and compliance obligations may place a significant strain on
our management, operational and financial resources and systems for the foreseeable future.

Risks for U.S. Holders

We have in the past qualified and in the future may qualify as a passive foreign investment company, which

may result in adverse U.S. federal income tax consequence to U.S. holders.

Based on our average value of our gross assets, our cash and cash equivalents as well as the price of our shares we
qualified  as  a  passive  foreign  investment  company  (“PFIC”)  for  U.S.  federal  income  tax  for  2016  and  2022  but  not  for
2017 through 2021. A corporation organized outside the U.S. generally will be classified as a PFIC for U.S. federal income
tax purposes in any taxable year in which at least 75% of its gross income is passive income or on average at least 50% of
the  gross  value  of  its  assets  is  attributable  to  assets  that  produce  passive  income  or  are  held  to  produce  passive  income.
Passive  income  for  this  purpose  generally  includes  dividends,  interest,  royalties,  rents  and  gains  from  commodities  and
securities transactions. Our status in any taxable year will depend on our assets and activities in each year, and because this
is a factual determination made annually after the end of each taxable year, there can be no assurance that we will continue
to qualify as a PFIC in future taxable years. The market value of our assets may be determined in large part by reference to
the  market  price  of  our  ordinary  shares,  which  is  likely  to  fluctuate,  and  may  fluctuate  considerably  given  that  market
prices of biotechnology companies have been especially volatile. If we were considered a PFIC for the current taxable year
or any future taxable year, a U.S. holder would be required to file annual information returns for such year, whether the
U.S. holder disposed of any ordinary shares or received any distributions in respect of ordinary shares during such year. In
certain circumstances a U.S. holder may be able to make certain tax elections that would lessen the adverse impact of PFIC
status;  however,  to  make  such  elections  the  U.S.  holder  will  usually  have  to  have  been  provided  information  about  the
company by us, and we do not intend to provide such information.

The  U.S.  federal  income  tax  rules  relating  to  PFICs  are  complex.  U.S.  holders  are  urged  to  consult  their  tax
advisors  with  respect  to  the  purchase,  ownership  and  disposition  of  our  shares,  the  possible  implications  to  them  of  us
being  treated  as  a  PFIC  (including  the  availability  of  applicable  election,  whether  making  any  such  election  would  be
advisable in their particular circumstances) as well as the federal, state, local and foreign tax considerations applicable to
such holders in connection with the purchase, ownership, and disposition of our shares.

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Any U.S. or other foreign judgments may be difficult to enforce against us in the Netherlands.

Although we report as a U.S. domestic filer for SEC reporting purposes, we are incorporated under the laws of the
Netherlands. Some of the members of our board and senior management reside outside the U.S.. As a result, it may not be
possible for shareholders to effect service of process within the U.S. upon such persons or to enforce judgments against
them or us in U.S. courts, including judgments predicated upon the civil liability provisions of the federal securities laws of
the U.S.. In addition, it is not clear whether a Dutch court would impose civil liability on us or any of our Board members
in  an  original  action  based  solely  upon  the  federal  securities  laws  of  the  United  States  brought  in  a  court  of  competent
jurisdiction in the Netherlands.

The  U.S.  and  the  Netherlands  currently  do  not  have  a  treaty  providing  for  the  reciprocal  recognition  and
enforcement of judgments, other than arbitration awards, in civil and commercial matters. Consequently, a final judgment
for  payment  given  by  a  court  in  the  U.S.,  whether  or  not  predicated  solely  upon  U.S.  securities  laws,  would  not
automatically  be  recognized  or  enforceable  in  the  Netherlands.  To  obtain  a  judgment  which  is  enforceable  in  the
Netherlands, the party in whose favor a final and conclusive judgment of the U.S. court has been rendered will be required
to file its claim with a court of competent jurisdiction in the Netherlands. Such party may submit to the Dutch court the
final judgment rendered by the U.S. court. If and to the extent that the Dutch court finds that the jurisdiction of the U.S.
court has been based on grounds which are internationally acceptable and that proper legal procedures have been observed,
the Dutch court will, in principle, give binding effect to the judgment of the U.S. court, unless such judgment contravenes
principles  of  public  policy  of  the  Netherlands.  Dutch  courts  may  deny  the  recognition  and  enforcement  of  punitive
damages  or  other  awards.  Moreover,  a  Dutch  court  may  reduce  the  amount  of  damages  granted  by  a  U.S.  court  and
recognize  damages  only  to  the  extent  that  they  are  necessary  to  compensate  actual  losses  or  damages.  Enforcement  and
recognition  of  judgments  of  U.S.  courts  in  the  Netherlands  are  solely  governed  by  the  provisions  of  the  Dutch  Civil
Procedure Code.

Therefore U.S. shareholders may not be able to enforce against us or our board members or senior management
who are residents of the Netherlands or countries other than the U.S. any judgments obtained in U.S. courts in civil and
commercial matters, including judgments under the U.S. federal securities laws.

The rights and responsibilities of our shareholders and directors are governed by Dutch law and differ in some

important respects from the rights and responsibilities of shareholders under U.S. law.

Although we report as a U.S. domestic filer for SEC purposes, our corporate affairs are governed by our articles of
association and by the laws governing companies incorporated in the Netherlands. The rights of our shareholders and the
responsibilities of members of our board under Dutch law are different than under the laws of some U.S. jurisdictions. In
the  performance  of  their  duties,  our  board  members  are  required  by  Dutch  law  to  consider  the  interests  of  uniQure,  its
shareholders, its employees, and other stakeholders and not only those of our shareholders (as would be required under the
law of most U.S. jurisdictions). As a result of these considerations our directors may take action that would be different
than those that would be taken by a company organized under the law of some U.S. jurisdictions.

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Item 1B.  Unresolved Staff Comments.

None.

Item 2.  Properties.

Lexington, Massachusetts / United States

We  operate  an  83,998  square  feet  GMP  qualified  manufacturing  facility  that  we  lease  in  Lexington,
Massachusetts, U.S. In November 2018, we extended and expanded the facility by leasing an additional 30,655 square feet
(as from June 1, 2019 onwards) of the same building. The expanded and extended lease for the facility terminates in June
2029, and subject to the provisions of the lease, may be renewed for two subsequent five-year terms.

In  December  2021,  we  entered  into  a  new  lease  for  an  additional  laboratory  and  office  facility  in  Lexington,
Massachusetts,  U.S.  of  approximately  13,501  square  feet  of  space.  The  lease  commenced  in  May  2022,  is  set  for  seven
years and is non-cancellable. The lease is renewable for one five-year term.

In February 2022, we also entered into a new lease for a multi user office-building in Lexington, Massachusetts,
U.S. of approximately 12,716 square feet. The lease commenced in November 2022 and is set for a non-cancellable period
of seven years and four months. The lease is renewable for one five-year term.

Amsterdam / The Netherlands

In  2016,  we  entered  into  leases  for  a  total  of  approximately  111,000  square  feet  multi-tenant  facility  in
Amsterdam.  The  lease  for  parts  of  this  facility  terminates  in  2032,  with  an  option  to  extend  in  increments  of  five-year
periods.

In December 2017, we entered into an agreement to sub-lease three of the seven floors of our Amsterdam facility
for a ten-year term ending on December 31, 2027, with an option for the sub-lessee to extend until December 31, 2031 as
well as an option that has expired to break the lease prior to December 31, 2020 subject to the lessee paying a penalty and
breaking certain financial covenants. In February 2020, we amended the sub-lease agreement to take back one of the three
floors effective March 1, 2020.

In  May  2021,  we  entered  into  a  sublease  agreement  to  let  an  additional  approximately  1,080  square  meters  of
office  space  in  the  multi-tenant  facility.  The  lease  expires  in  October  2028  and  includes  an  option  to  break  the  lease  on
October 31, 2023.

Basel / Switzerland

In May 2022, we entered into a sublease agreement to let approximately 81 square meters comprising of four co-
workers  spaces  in  a  multi  user  office-building  to  accommodate  our  employees  in  Basel,  Switzerland.  We  subleased  an
additional room beginning in December 2022 for a total of approximately 100 square meters. The lease expires on June 30,
2032.

We  believe  that  our  facilities  are  adequate  to  meet  current  needs  and  that  suitable  alternative  spaces  will  be

available in the future on commercially reasonable terms.

Item 3.  Legal Proceedings.

None.

Item 4.  Mine Safety Disclosures.

Not applicable.

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Part II

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

Our  ordinary  shares  are  listed  on  the  Nasdaq  Global  Select  Market  under  the  symbol  “QURE”.  We  have  never
paid any cash dividends on our ordinary shares, and we do not anticipate paying cash dividends in the foreseeable future.
We anticipate that we will retain all earnings, if any, to support operations and to finance the growth and development of
our business for the foreseeable future.

Unregistered Sales of Equity Securities

During the period covered by this Annual Report on Form 10-K, we have not issued any securities that were not

registered under the Securities Act of 1933, as amended (the “Securities Act”).

Issuer Share Repurchases

We did not make any purchases of our ordinary shares during the period covered by this Annual Report on Form

10-K.

Holders

As  of  February  23,  2023,  there  were  approximately  seven  holders  of  record  of  our  ordinary  shares.  The  actual
number of shareholders is greater than this number of record holders, and includes shareholders who are beneficial owners,
but whose shares are held in street name by brokers and other nominees. This number of holders of record also does not
include shareholders whose shares may be held in trust by other entities.

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Share Performance Graph

The following graph compares the performance of our ordinary shares (“QURE”) for the periods indicated with
the performance of the NASDAQ Composite Index (“˄IXIC”) and the Nasdaq biotechnology index (“˄NBI”). This graph
assumes an investment of $100 after market close on December 31, 2017 in each of our ordinary shares, the NASDAQ
Composite  Index,  and  the  NASDAQ  Biotechnology  Index,  and  assumes  reinvestment  of  dividends,  if  any.  The
performance of our ordinary shares shown on the graph below is not necessarily indicative of the future performance of our
ordinary  shares.  This  graph  is  not  “soliciting  material,”  is  not  deemed  “filed”  with  the  SEC  and,  except  to  the  extent
incorporated by reference, is not to be incorporated by reference into any of our filings under the Securities Act, or the U.S.
Securities  Exchange  Act  of  1934,  as  amended  (the  “Exchange  Act”),  whether  made  before  or  after  the  date  hereof  and
irrespective of any general incorporation language in any such filing.

Item 6.  Reserved

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

The  following  Management’s  Discussion  and  Analysis  of  Financial  Condition  and  Results  of  Operations
(“MD&A”)  is  intended  to  help  the  reader  understand  our  results  of  operations  and  financial  condition.  This  MD&A  is
provided as a supplement to, and should be read in conjunction with, our audited consolidated financial statements and the
accompanying notes thereto and other disclosures included in this Annual Report on Form 10-K, including the disclosures
under “Risk Factors.” Our consolidated financial statements have been prepared in accordance with generally accepted
accounting principles in the U.S. (“U.S. GAAP”) and unless otherwise indicated are presented in U.S. dollars.

Except for the historical information contained herein, the matters discussed in this MD&A may be deemed to be
forward-looking  statements.  Forward-looking  statement  are  only  predictions  based  on  management’s  current  views  and
assumptions and involve risks and uncertainties, and actual results could differ materially from those projected or implied.
We  make  such  forward-looking  statements  pursuant  to  the  safe  harbor  provisions  of  the  Private  Securities  Litigation
Reform Act of 1995 and other federal securities laws. Words such as “may,” “expect,” “anticipate,” “estimate,” “intend,”
and similar expressions (as well as other words or expressions referencing future events, conditions or circumstances) are
intended to identify forward-looking statements.

Our  actual  results  and  the  timing  of  certain  events  may  differ  materially  from  the  results  discussed,  projected,
anticipated,  or  indicated  in  any  forward-looking  statements.  We  caution  you  that  forward-looking  statements  are  not
guarantees  of  future  performance  and  that  our  actual  results  of  operations,  financial  condition  and  liquidity,  and  the
development of the industry in which we operate may differ materially from the forward-looking statements contained in
this  MD&A.  In  addition,  even  if  our  results  of  operations,  financial  condition  and  liquidity,  and  the  development  of  the
industry in which we operate are consistent with the forward-looking statements contained in this MD&A, they may not be
predictive of results or developments in future periods.

We caution readers not to place undue reliance on any forward-looking statements made by us, which speak only
as of the date they are made. We disclaim any obligation, except as specifically required by law and the rules of the SEC, to
publicly  update  or  revise  any  such  statements  to  reflect  any  change  in  our  expectations  or  in  events,  conditions,  or
circumstances on which any such statements may be based, or that may affect the likelihood that actual results will differ
from those set forth in the forward-looking statements.

Overview

We  are  a  leader  in  the  field  of  gene  therapy  and  seek  to  deliver  to  patients  suffering  from  rare  and  other
devastating  diseases  single  treatments  with  potentially  curative  results.  We  are  advancing  a  pipeline  of  innovative  gene
therapies,  including  our  clinical  candidates  for  the  treatment  of  Huntington’s  disease  and  ALS,  as  well  as  preclinical
product  candidates  including  candidates  for  the  treatment  of  rTLE  and  Fabry  disease.  In  November  2022  and  February
2023,  our  internally-developed  HEMGENIXÔ,  a  gene  therapy  for  the  treatment  of  hemophilia  B,  was  approved  for
commercialization  by  the  FDA  and  the  EMA,  respectively.  In  June  2020,  we  agreed  to  license  HEMGENIXÔ  to  CSL
Behring,  which  is  now  responsible  for  commercialization  of  HEMGENIXÔ.  We  are  manufacturing  HEMGENIXÔ  for
CSL  Behring  and  are  entitled  to  specific  milestone  payments  and  royalties  on  net  sales.  We  believe  our  validated
technology platform and manufacturing capabilities provide us distinct competitive advantages, including the potential to
reduce development risk, cost, and time to market. We produce our AAV-based gene therapies in our own facilities with a
proprietary, commercial-scale, cGMP-compliant, manufacturing process. We believe our Lexington, Massachusetts-based
facility is one of the world’s most versatile gene therapy manufacturing facilities.

Business developments

Below is a summary of our recent significant business developments:

CSL Behring collaboration

In  June  2020  we  entered  into  the  CSL  Behring  Agreement  pursuant  to  which  CSL  Behring  received  exclusive

global rights to the Product. The transaction became fully effective in May 2021.

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In March and April 2022, CSL Behring submitted marketing applications for HEMGENIXÔ in the U.S. and the
EU. In March and April 2022, we received the $55.0 million owed to us by CSL Behring related to submission of these
marketing applications.

In  November  2022,  the  FDA  approved  the  marketing  application  for  the  U.S.  and  in  February  2023  the  EMA
approved  the  marketing  application  for  the  EU.  We  are  eligible  to  receive  a  $100.0  million  payment  from  CSL  Behring
following  the  first  sale  of  the  Product  in  the  U.S.  We  are  also  eligible  to  receive  a  $75.0  million  payment  from  CSL
Behring following the first sale of the Product in any of five major European countries, namely France, Germany, Italy,
Spain,  and  the  United  Kingdom,  provided  the  first  sale  occurs  prior  to  July  2,  2023.  We  recorded  the  $100.0  million
payment associated with the first sale in the U.S. as license revenue in the year ended December 31, 2022 as we expect this
event to occur in 2023. We did not record license revenue related to a $75.0 million payment in the year ended December
31, 2022 as the accomplishment of this milestone prior to July 2, 2023 is contingent on factors outside of our control.

Concurrently  with  the  execution  of  the  CSL  Behring  Agreement,  we  and  CSL  Behring  also  entered  into  a
development and commercial supply agreement, pursuant to which, among other things, we will supply the Product to CSL
Behring  at  an  agreed-upon  price  commensurate  with  the  stand-alone  selling  price  (“SSP”)  until  such  time  that  these
capabilities  are  transferred  to  CSL  Behring  or  its  designated  contract  manufacturing  organization.  We  completed  the
validation of the current manufacturing process and in July 2022, following a comprehensive multi-day facility inspection,
the EMA notified us that GMP certification can be issued for our Lexington, Massachusetts-based manufacturing site to
produce  commercial  supply  of  HEMGENIXÔ.  In  August  2022,  we  completed  the  FDA  pre-license  inspection  of  the
Lexington  facility.  On  September  6,  2022  CSL  Behring  notified  us  of  its  intent  to  transfer  manufacturing  technology
related to the Product in the coming years to a third-party contract manufacturer designated by CSL Behring. CSL Behring
also informed us of its intent to retain us as a source for manufacturing after the completion of the technology transfer.

In August 2022, the GMP certification for the Amsterdam facility was amended to include release testing of the

Product in the European Union following inspection by the IGJ.

We recorded $1.7 million in revenue related to manufacturing the Product in the year ended December 31, 2022.

Huntington’s disease program (AMT-130)

On  March  21,  2022,  we  announced  that  we  have  completed  the  enrollment  of  all  26  patients  in  the  first  two
cohorts of our Phase I/II clinical trial of AMT-130 taking place in the U.S. The low-dose cohort includes 10 patients, of
which six patients received treatment with AMT-130 and four patients received imitation surgery. The higher-dose cohort
includes 16 patients, of which 10 patients received treatment with AMT-130 and six patients received imitation surgery. In
July 2022 we crossed over one of these six patients and treated the patient with the lower dose of AMT-130.

On June 23, 2022, we announced encouraging safety and biomarker data from the 10 patients enrolled in the low-
dose U.S. cohort. AMT-130 was generally well-tolerated with no serious adverse events related to AMT-130 reported in the
treated  patients.  In  the  four  treated  patients  with  evaluable  data,  mean  levels  of  CSF  mHTT  declined  at  all  timepoints
compared to baseline and decreased by 53.8% at 12 months of follow-up. In the six treated patients, measurements of CSF
NfL initially increased as expected following the AMT-130 surgical procedure and declined thereafter, nearing baseline at
12 months of follow-up.

In August 2022, we announced a voluntary postponement of AMT-130 higher-dose procedures due to SUSARs
reported in three of the 14 patients that were treated with the higher dose of AMT-130. In October 2022, after completing a
comprehensive safety investigation, the DSMB recommended resuming treatment at the higher dose of AMT-130 for the
remaining  five  European  patients  and  any  patients  in  the  U.S.  trial  eligible  to  cross  over  from  the  control  arm  to  the
treatment. All three patients have experienced full resolution of the reported SUSARs.

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Acquisition of Corlieve Therapeutics

On June 21, 2021, we entered into a Sale and Purchase Agreement (“SPA”) to acquire all outstanding ordinary
shares of Corlieve SAS (“Corlieve”), a privately held French gene therapy company (the “Corlieve Transaction”). Upon the
closing  of  the  Corlieve  Transaction  on  July  30,  2021  (the  “Acquisition  Date”),  we  acquired  97.7%  of  the  outstanding
ordinary shares of Corlieve in return for EUR 44.9 million ($53.3 million as of the Acquisition Date). We paid EUR 1.8
million ($1.9 million) to acquire the remaining shares of Corlieve in 2022. We financed the Corlieve Transaction from cash
on hand.

In addition to the payments to acquire 100% of the outstanding ordinary shares, Corlieve’s former and remaining
shareholders  are  eligible  to  receive  up  to  EUR  40.0  million  (or  $42.8  million  as  of  December  31,  2022)  upon  the
achievement of development milestones through Phase I/II and EUR 160.0 million (or $171.3 million as of December 31,
2022) upon the achievement of milestones associated with Phase III development and obtaining approval to commercialize
AMT-260 in the U.S. and the EU. We expect these obligations will become payable between 2023 and 2031. If and when
due, we may elect to pay up to 25% of such milestone payments through the issuance of our ordinary shares.

Termination of Bristol-Myers Squibb Agreement

In  May  2015  we  and  BMS  entered  the  BMS  CLA.  The  initial  four-year  research  term  under  the  collaboration
terminated in May 2019. On December 1, 2020, we and BMS amended the BMS CLA. As a result of the Amended BMS
CLA, we recognized the remaining balance of license revenue of $27.8 million not previously recognized during the year
ended December 31, 2020. The Amended BMS CLA did not extend the initial research term. For a period of one-year from
the effective date of the Amended BMS CLA, BMS was able to replace up to two of the four active collaboration targets
with two new targets in the field of cardiovascular disease. BMS did not replace any of the active collaboration targets. On
December 17, 2020, BMS designated one of the four collaboration targets as a candidate to advance into Investigational
New Drug-enabling studies (“IND-enabling studies”) entitling us to receive a $4.4 million research milestone payment. We
recorded the $4.4 million as license revenue in the year ended December 31, 2020.

On  November  21,  2022  we  received  the  Termination  Notice  whereby  the  Amended  BMS  CLA  terminated  on

February 21, 2023.

The Amended BMS CLA terminated two warrants that, when in effect, provided BMS the right to increase its
ownership  in  the  Company  up  to  19.9%  upon  the  exercise  of  both  warrants,  with  the  exercise  of  such  warrants  being
conditioned on the designation of a seventh, and a tenth Collaboration Target, respectively. In the Amended BMS CLA, we
and BMS agreed that upon the consummation of a change of control transaction of uniQure that occurs prior to the earlier
of (i) December 1, 2026 and (ii) BMS’ delivery of a target cessation notice for all four Collaboration Targets, we (or our
third  party  acquirer)  would  pay  to  BMS  a  one-time,  non-refundable,  non-creditable  cash  payment  of  $70.0  million,
provided  that  (x)  if  $70.0  million  is  greater  than  five  percent  of  the  net  proceeds  (as  contractually  defined)  from  such
change of control transaction, the payment would be an amount equal to five percent of such net proceeds, and (y) if $70.0
million  is  less  than  one  percent  of  such  net  proceeds,  the  change  of  control  payment  would  be  an  amount  equal  to  one
percent of such net proceeds. We had not consummated any change of control transaction as of the Termination Notice and
as  of  December  31,  2022,  assessed  the  probability  as  of  the  Termination  Date  and  released  the  liability  related  to  the
change of control payment to other income during the year ended December 31, 2022.

The  Termination  Notice  did  not  change  any  of  the  provisions  of  the  Investor  Agreement  with  BMS  that  we
entered  into  in  2015,  but  various  provisions  of  the  Investor  Agreement  have  been  terminated.  We  have  granted  BMS
certain  registration  rights  that  allow  BMS  to  require  us  to  register  our  securities  beneficially  held  by  BMS  under  the
Securities Act. BMS may make up to two such demands for us to register the shares, subject to customary limitations. In
addition, independent of their demand registration rights, upon the occurrence of certain events, we must also provide BMS
the opportunity to include their ordinary shares in any registration statement that we effect.

We  also  continue  to  grant  BMS  certain  information  rights  under  the  Investor  Agreement,  although  these

requirements may be satisfied by our public filings required by U.S. securities laws.

BMS also continues to be subject to a lock up pursuant to the Investor Agreement for as long as BMS holds more
than 4.9% of our ordinary shares (as of December 31, 2022 BMS held 5.08%). Without our prior consent, BMS may not
sell or dispose any of its current ordinary shares.

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The Investor Agreement also continues to require BMS to vote all of our ordinary shares it beneficially holds in
favor of all items on the agenda for the relevant general meeting of shareholders of our company as proposed on behalf of
our  company,  unless,  in  the  context  of  a  change  of  control  or  similar  transaction,  BMS  has  itself  made  an  offer  to  our
company or our board in connection with the transaction that is the subject of the vote, in which case it is free to vote its
shares at its discretion. This voting provision will terminate upon the later of the date on which BMS no longer beneficially
owns  at  least  4.9%  of  our  outstanding  ordinary  shares  or  the  closing  of  a  transaction  that  provides  BMS  exclusive  and
absolute discretion to vote our shares it beneficially holds.

Investment in debt securities

In December 2022, we invested $100.0 million and EUR 80.0 million (or total of $183.9 million as of investment
date)  of  our  cash  on  hand  into  short-term  and  long-term  euro  and  dollar  denominated  sovereign  bonds.  The  bonds  have
remaining  maturities  ranging  from  two  to  14  months.  We  classify  these  bonds  as  held-to-maturity.  We  made  no  such
investments in 2021 and 2020.

Covid pandemic

The coronavirus disease (“Covid”) caused by the severe acute respiratory syndrome coronavirus 2 (“Sars-CoV 2
virus”) was characterized as a pandemic by the WHO on March 11, 2020. Since then, various variants of the Sars-CoV 2
virus causing Covid have been identified.

The broader implications of Covid, including the implications from the various variants, on our results of

operations and overall financial performance remain uncertain. We have experienced and continue to experience increased
lead times in the delivery of equipment and disposables that we use to manufacture materials for our various programs.
Currently, these have not materially impacted our development timelines and we continue to adapt to the current
environment to minimize the effect to our business. However, we may experience more pronounced disruptions in our
operations in the future.

Russian-Ukrainian war

Our business is not directly impacted by the war as we do not operate in either Russia or the Ukraine. However,

the war might potentially amplify the disruptive impact of the Covid pandemic.

Financial Highlights

Key components of our results of operations include the following:

2022

Total revenues
Cost of revenues
Research and development expenses
Selling, general and administrative expenses
Net (loss) / income

2020

Year ended December 31, 
2021
(in thousands)
$  524,002
 (24,976)
 (143,548)
 (56,290)
 329,589

$

$  106,483
 (3,343)
 (197,591)
 (55,059)
 (126,789)

 37,514
 —
 (122,400)
 (42,580)
 (125,024)

As  of  December  31,  2022,  we  had  $392.8  million  in  cash  and  cash  equivalents  and  investment  securities
(December  31,  2021:  $556.3  million  cash  and  cash  equivalents).  We  had  a  net  loss  of  $126.8  million  in  2022,  and  net
income  of  $329.6  million  in  2021  and  a  net  loss  of  $125.0  million  in  2020.  As  of  December  31,  2022,  we  had  an
accumulated deficit of $581.9 million (December 31, 2021: $455.1 million).

We anticipate that our expenses will increase for the foreseeable future and will include costs related to:
● advancing AMT-130 for our Huntington’s disease gene therapy program into phase III clinical study;
● advancing our gene therapy programs rTLE, SOD1-ALS and Fabry disease into Phase I/II clinical studies;
● potentially acquiring or in-licensing rights to new therapeutic targets, product candidates and technologies;
● making potential future milestone payments related to the acquisition of Corlieve, if any;

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● advancing preclinical research and development for gene therapy product candidates targeting other diseases;

and

● continuing  to  invest  in  expanding,  developing  and  optimizing  our  manufacturing  capabilities  and  other

enabling technologies, such as next-generation viral vectors, promoters and re-dosing.

See “Results of Operations” below for a discussion of the detailed components and analysis of the amounts above.

Critical Accounting Policies and Estimates

In preparing our consolidated financial statements in accordance with U.S. GAAP and pursuant to the rules and
regulations promulgated by the SEC we make assumptions, judgments and estimates that can have a significant impact on
our  net  loss/income  and  affect  the  reported  amounts  of  certain  assets,  liabilities,  revenue  and  expenses,  and  related
disclosures. On an ongoing basis, we evaluate our assumptions, estimates and judgments, including those related to what
we  believe  to  be  our  critical  accounting  policies.  Refer  to  Note  2  “Summary  of  significant  accounting  policies”  for  a
summary of our significant accounting policies.

We  base  our  assumptions,  judgments  and  estimates  on  historical  experience  and  various  other  factors  that  we
believe  to  be  reasonable  under  the  circumstances,  the  results  of  which  form  the  basis  for  making  judgments  about  the
carrying values of assets and liabilities that are not clear from other sources. Actual results may differ from these estimates
under  different  assumptions,  judgments  or  estimates.  We  also  discuss  our  critical  accounting  estimates  with  the  Audit
Committee of our Board of Directors.

We consider the following to be our critical accounting estimates:

● Recognition  of  revenue  including  the  CSL  Behring  milestones  in  relation  to  the  CSL  Behring

Agreement;

● Contingent consideration recorded in relation to the Corlieve business combination; and
● Valuation allowance related to Dutch and U.S. deferred tax assets.

Revenue recognition related to CSL Behring milestones

On the Signing Date we entered into the CSL Behring Agreement. The transaction became effective on Closing.

As of Closing, we identified two material performance obligations related to the CSL Behring Agreement:

(i)

(ii)

Sale of the exclusive global rights to the Product (“License Sale”); and

Generate  information  to  support  the  regulatory  approval  of  the  current  and  next  generation  manufacturing
process  of  Product  and  to  provide  any  such  information  generated  to  CSL  Behring  (“Manufacturing
Development”).

We determined that the fixed upfront payment of $450.0 million and the $12.4 million that we received in relation
to  the  certain  reimbursable  activities  to  fulfill  the  transfer  of  global  rights  (“Additional  Covenants”)  in  the  year  ended
December  31,  2021  should  be  allocated  to  the  License  Sale.  In  addition,  we  concluded  that  $255.0  million  of  variable
milestone payments, sales milestone payments and royalties should be allocated to the License Sale performance obligation
as well. We determined that the License Sale was completed on May 6, 2021, when we transferred the license and CSL
Behring  assumed  full  responsibility  for  the  development  and  commercialization  of  the  Product.  Upon  the  Closing,  we
evaluated the amounts of potential payments and the likelihood that the payments will be received. We utilized the most
likely amount method to estimate the variable consideration to be included in the transaction price. Since we cannot control
the  achievement  of  regulatory  and  first  commercial  sales  milestones,  we  concluded  that  all  potential  payments  were
constrained as of Closing. We determined that we would recognize revenue related to these payments, only to the extent
that  it  becomes  probable  that  no  significant  reversal  of  recognized  cumulative  revenue  will  occur  thereafter.  We  will
include  payments  related  to  sales  milestones  in  the  transaction  price  when  their  achievement  becomes  probable,  and  we
will include royalties on the sale of Product once these have been earned.

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In  March  and  April  2022,  we  collected  the  $55.0  million  of  variable  milestone  payments  related  to  the
submissions of a BLA and MAA which we had recorded as license revenue in the year ended December 31, 2021. During
the  year  ended  December  31,  2022,  we  recorded  $100.0  million  of  variable  milestone  revenue  related  to  a  first  sale  of
HEMGENIX™  in  the  U.S.  as  we  consider  this  to  be  probable  following  the  November  2022  FDA  approval  of
HEMGENIX™. Despite the approval of the MAA for HEMGENIX™ by the EMA in February 2023, we did not record
the $75.0 million variable milestone payment related to a first sale of HEMGENIX™ in the one of five major European
countries, namely France, Germany, Italy, Spain, and the United Kingdom, as license revenue in the year ended December
31, 2022 as the payment is contingent on the milestone being achieved prior to July 2, 2023, which is contingent on factors
outside our control.

Contingent consideration

On the Acquisition Date of Corlieve we recorded contingent consideration related to amounts potentially payable
to  Corlieve’s  former  shareholders.  The  amounts  payable  in  accordance  with  the  SPA  are  contingent  upon  realization  of
certain milestones associated with the TLE research program. Contingent consideration was measured at fair value at the
Acquisition  Date  with  changes  in  fair  value  recognized  in  the  consolidated  statements  of  operations  in  research  and
development expenses.

Changes in contingent consideration can result from changes in the assumed achievement and timing of estimated

milestones and the discount rate used to estimate the fair value of the liability:

● We had used discount rates ranging from 10.9% to 11.9% to calculate the contingent consideration as of
December  31,  2021.  As  of  December  31,  2022  we  increased  the  interest  rates  to  a  range  of  14.0%  to
14.4% to reflect increases in market interest rates. An increase in the discount rate reduces the fair value
of the contingent consideration liability whereas a decrease in the discount rate increases the fair market
value of the contingent consideration liability.

● As of December 31, 2021, we had estimated that AMT-260 would advance into the clinical development
by early 2024, and as of December 31, 2022, we revised that estimate to late 2023. An achievement of a
milestone at a later than currently expected date reduces the fair value of the contingent consideration
liability whereas an achievement at an earlier than currently expected date increases the fair value of the
contingent consideration liability.

● We  initially  recorded  the  contingent  consideration  liability  on  the  Acquisition  Date  assuming  a  40%
probability  of  advancing  the  TLE  research  program  into  clinical  development.  We  developed  this
estimate  using  data  from  an  external  study  regarding  the  average  likelihood  of  advancing  into  clinical
development at a certain stage or preclinical development. For the year ended December 31, 2021, we
had  increased  the  probability  to  55.0%  following  the  designation  of  a  lead  candidate  by  us  in  late
October  2021.  During  the  year  ended  December  31,  2022  we  increased  the  probability  to  66.0%
following the commencement of toxicology studies for the TLE program. The increase in probabilities
resulted in a $4.4 million expense in the year ended December 31, 2022 and a $5.8 million expense in
the year ended December 31, 2021.

The  fair  value  of  the  contingent  consideration  liability  as  of  December  31,  2022  was  $35.3  million  and  as  of
December  31,  2021  was  $29.5  million.  The  increase  was  primarily  driven  by  an  increase  in  the  probability  of  the  TLE
program advancing into clinical development. If as of December 31, 2022 we had assumed TLE was certain (i.e. 100%
probability) to advance into clinical development, then the fair value of the contingent consideration liability would have
increased  from  $35.3  million  to  $48.8  million.  If  as  of  December  31,  2022  we  had  assumed  that  we  would  discontinue
development of the TLE program, then we could have released the contingent consideration liability to income.

Valuation allowance related to Dutch and U.S. deferred tax assets

We are subject to corporate taxes in the Netherlands. We have been incurring net operating losses in accordance

with the corporate tax laws in almost all years since we founded our business.

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As of December 31, 2022, the total amount of net operating losses carried forward under the Dutch tax regime
was  $264.0  million  (December  31,  2021:  $228.5  million).  We  have  historically  recorded  a  full  valuation  allowance.  We
evaluate  all  positive  and  negative  evidence  including  future  income  from  the  CSL  Behring  Agreement  in  assessing  the
need for such a full valuation allowance. We concluded that as of December 31, 2022 it is more likely than not that the
remaining deferred tax assets will not be realized. If we would have released the full valuation allowance as of December
31, 2022, then we would have recorded up to $74.5 million of deferred tax income during the year ended December 31,
2022.

We are also subject to corporate taxes in the U.S.. While our operations in the U.S. had initially been incurring net
operating tax losses, our subsidiary in the U.S. generated taxable income in the past few years starting with 2018. Based on
the design of our worldwide operations, we determined as of December 31, 2020 that we expect to continue to generate
taxable income in the U.S. during the foreseeable future and therefore determined that it had become more likely than not
that our U.S. deferred tax assets will be realized. Accordingly, we recorded $16.4 million of deferred tax income in the year
ended December 31, 2020 from releasing the full valuation allowance against our net deferred tax assets in the U.S.. We
generated  taxable  income  in  the  U.S.  during  the  years  ended  December  31,  2021  and  December  31,  2022  and  therefore
continue to expect that it is more likely than not that our U.S. deferred tax assets will be realized. We would be required to
record deferred tax expense to recognize a valuation allowance on a portion of or possibly even our full U.S. deferred tax
asset of $21.1 million as of December 31, 2022, if we would expect not to meet the above threshold.

Recently Adopted Accounting Pronouncements

ASU 2021-10: Government Assistance

In  November  2018,  the  Financial  Accounting  Standards  Board  (“FASB”)  issued  ASU  2021-10,  Government
Assistance  (Topic  832)  which  discussed  the  requirements  for  disclosures,  to  be  applied  prospectively  or  retrospectively,
related to transactions with a government. ASU 2021-10 is effective for fiscal years beginning after December 15, 2021.
The new disclosure requirements required disclosures around 1) information about the nature of the transactions and the
related accounting policy used to account for the transactions, 2) the line items on the balance sheet and income statement
that are affected by the transactions, and the amounts applicable to each financial statement line item, and 3) significant
terms  and  conditions  of  the  transactions,  including  commitments  and  contingencies.  The  Company  currently  includes
information on government grants and the adoption of ASU 2021-10 on January 1, 2022 has not had a material impact on
the Company’s consolidated financial statements.

Results of Operations

The following table presents a comparison of the twelve months ended December 31, 2022, 2021 and 2020.

Year ended December 31, 

Total revenues
Operating expenses:
Cost of revenues
Research and development expenses
Selling, general and administrative expenses
Total operating expenses
Other income
Other expense
(Loss) / income from operations
Non-operating items, net
(Loss) / income before income tax benefit / (expense)
Income tax benefit / (expense)
Net (loss) / income

2022

2020
(in thousands)
$  106,483 $  524,002 $  37,514 $  (417,519) $  486,488

2022 vs 2021

2021 vs 2020

2021

 21,633
 (54,043)

 (3,343)
 (197,591)
 (55,059)
 (255,993)
 7,171
 (820)
 (143,159)
 14,900

 (24,976)
 (143,548)
 (56,290)
 (224,814)
 12,306
 (876)
 310,618
 22,188

 (24,976)
 —
 (21,148)
 (122,400)
 1,231       (13,710)
 (42,580)
 (59,834)
 (164,980)
 8,964
 3,342
 426
 (1,302)
 436,044
 (125,426)
 38,205
 (16,017)
 474,249
$ (128,259) $  332,806 $ (141,443)
 (19,636)
 16,419
$ (126,789) $  329,589 $ (125,024) $  (456,378) $  454,613

 (31,179)
 (5,135)
 56
 (453,777)
 (7,288)
 (461,065)
 4,687

 (3,217)

 1,470

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Revenues and cost of revenues

Our revenue and associated costs for the years ended December 31, 2022, 2021 and 2020 was as follows:

License revenues
Collaboration revenues
Contract manufacturing revenues
Total revenues

Year ended December 31, 

2022

2021

2020

     2022 vs 2021      2021 vs 2020

$  100,000
 4,766
 1,717
$  106,483

$  517,400
 6,602
 —
$  524,002

(in thousands)
 37,319
$
 195
 —
 37,514

$

$  (417,400) $  480,081
 6,407
 —
$  (417,519) $  486,488

 (1,836)
 1,717

Cost of license revenues
Cost of contract manufacturing revenues
Total cost

 (1,254)
 (2,089)
 (3,343)

$

 (24,976)
 —

$  (24,976) $

 —
 —
 — $

 23,722
 (2,089)
 21,633

 (24,976)
 —
$  (24,976)

CSL Behring

We recognize license revenue in relation to the License Sale when it becomes probable that regulatory and sales
milestone events will be achieved as well as when royalties on sales of Product have been earned. We recognized $100.0
million and $517.4 million of license revenue for the years ended December 31, 2022 and 2021. We recognized $100.0
million  of  license  revenue  in  2022  related  to  a  milestone  payment  we  expect  to  collect  following  the  first  sale  of
HEMGENIX™  in  the  U.S.  in  2023.  We  recognized  $517.4  million  license  revenue  in  2021  related  to  the  fixed  upfront
payment of $450.0 million and the $12.4 million we received in relation to the Additional Covenants after the Closing as
well as a total of $55.0 million of payments related to milestone payments owed on submission of the MAA in March 2022
and the BLA in April 2022, which we had considered probable as of the February 25, 2022 filing of the 2021 financial
statements.

We  expense  contract  fulfillment  costs  associated  with  license  revenue  recognized  as  costs  of  license  contract
revenues. These expenses primarily consist of payments we owe to our licensors in relation to license payments we receive
from CSL Behring. We incurred $1.3 million and $25.0 million of such cost in the years ended December 31, 2022 and
2021, respectively. We did not incur such costs in the years ended December 31, 2020.

We  recognize  collaboration  revenues  associated  with  services  rendered  in  relation  to  completing  the  HOPE-B
clinical  trial  on  behalf  of  CSL  Behring  between  Closing  and  December  2022,  when  CSL  Behring  fully  assumed  these
activities as well as in relation to additional development services that CSL Behring requests. These services are provided
by  our  employees.  Collaboration  revenue  related  to  these  contracted  services  is  recognized  when  the  performance
obligations are satisfied.

We  recognized  $3.0  million,  $2.4  million,  and  nil  of  collaboration  revenue  for  the  years  ended  December  31,
2022, 2021 and 2020, respectively. The increase in collaboration revenue in 2022 of $0.6 million compared to 2021 was
primarily  related  to  revenues  related  to  full-time-employee  (“FTE”)  recharges  of  $3.0  million  recognized  from  the  CSL
Behring agreement as a result of additional development services that CSL Behring requested.

We recognize contract manufacturing revenue related to contract manufacturing HEMGENIXTM for CSL Behring.
Contract  manufacturing  revenue  is  realized  when  earned  upon  sales  of  HEMGENIXTM to  CSL  Behring.  We  recognized
$1.7 million contract manufacturing revenues in the year ended December 31, 2022. We did not recognize such revenues in
2021  and  2020,  as  we  started  contract  manufacturing  activities  to  supply  CSL  Behring  with  launch  supplies  of
HEMGENIXTM following their submission of a BLA and MAA in the spring of 2022.

We incurred $2.1 million of cost of contract manufacturing revenues related to the manufacture of the Product in
the year ended December 31, 2022, compared to nil cost of contract manufacturing revenues in the years ended December
31, 2021 and 2022, respectively.

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BMS

We recognized license revenues associated with the amortization of the non-refundable upfront payment and target
designation  fees  we  received  from  BMS  in  2015  until  December  1,  2020.  We  evaluated  our  outstanding  performance
obligation  following  the  amendment  of  the  BMS  CLA  on  December  1,  2020  and  determined  that  our  remaining
performance  obligation  is  immaterial.  We  updated  our  measure  of  progress  accordingly  and  amortized  the  remaining
balance  of  unrecognized  revenue  of  $27.8  million  as  of  December  1,  2020  as  license  revenue  from  a  related  party.  On
December 17, 2020 BMS designated one of the four Collaboration Targets as a candidate to advance into IND-enabling
studies under the amended BMS CLA entitling us to receive a $4.4 million research milestone payment, which we recorded
as license revenue in the year ended December 31, 2020. We recognized no license revenues in the years ended December
31, 2022 and December 31, 2021.

We  recognized  collaboration  revenues  associated  with  Collaboration  Target-specific  pre-clinical  analytical
development and process development activities that were reimbursable by BMS under the BMS CLA and the amended
BMS CLA as well as other related agreements. Collaboration revenue related to these contracted services were recognized
when performance obligations were satisfied. We recognized $1.8 million, $4.2 million and, $0.2 million of collaboration
revenue for the years ended December 31, 2022, 2021 and 2020, respectively.

Following  the  termination  of  the  amended  BMS  CLA  on  February  22,  2023  we  do  not  expect  to  recognize  any

further revenue for services rendered in accordance with the BMS CLA.

Research and development expenses

We expense R&D as incurred. Our R&D expenses generally consist of costs incurred for the development of our

target candidates, which include:

● employee-related expenses, including salaries, benefits, travel, and share-based compensation expense;
● costs incurred for laboratory research, preclinical and nonclinical studies, clinical trials, statistical analysis and
report  writing,  and  regulatory  compliance  costs  incurred  with  clinical  research  organizations  and  other  third-
party vendors;

● costs incurred to conduct consistency and comparability studies;
● costs incurred for the development and improvement of our manufacturing processes and methods;
● costs  associated  with  research  activities  for  enabling  technology  platforms,  such  as  next-generation  vectors,

promoters and re-administration of gene therapies;

● costs  associated  with  the  rendering  of  collaboration  services  as  well  as  the  continued  development  of  the

Product;

● payments related to identifiable intangible assets without an alternative future use;
● payments to our licensors for milestones that have been achieved related to our product candidates, including

approval of the BLA;

● facilities,  depreciation,  and  other  expenses,  which  include  direct  and  allocated  expenses  for  rent  and

maintenance of facilities, insurance, and other supplies; and

● changes in the fair value of liabilities recorded in relation to our acquisition of Corlieve.

Our research and development expenses primarily consist of costs incurred for the research and development of our

product candidates, which include:

● AMT-130 (Huntington’s disease). We have incurred costs related to preclinical and nonclinical studies of AMT-
130 and have been incurring costs related to our Phase I/II trial since February 2019. Since 2021, we have also
incurred costs related to our Phase Ib/II clinical trial in Europe;

● AMT-260 (Temporal lobe epilepsy). We have incurred costs related the preclinical development of temporal lobe

epilepsy, which we acquired from Corlieve on July 30, 2021;

● AMT-191 (Fabry disease). We have incurred costs related to the preclinical development of Fabry disease;

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● Etranacogene dezaparvovec (hemophilia B). We have incurred costs related to the research, development, and
production of etranacogene dezaparvovec for the treatment of hemophilia B. During 2020 and up to the Closing
of  the  CSL  Behring  Agreement  we  incurred  costs  related  to  the  preparation  of  a  BLA  and  MAA  and  for
commercialization  of  the  Product.  We  also  incurred  costs  for  manufacturing  development.  After  the  Closing,
CSL Behring is responsible for the clinical and regulatory development and commercialization of the Product;
● Preclinical  research  programs.  We  incurred  costs  related  to  the  research  of  multiple  preclinical  gene  therapy

product candidates with the potential to treat certain rare and other serious medical conditions; and

● Technology platform development and other related research. We incurred significant research and development

costs related to manufacturing and other enabling technologies that are applicable across all our programs.

Our research and development expenses may vary substantially from period to period based on the timing of our
research  and  development  activities,  including  manufacturing  campaigns,  regulatory  submissions,  and  enrollment  of
patients in clinical trials. The successful development of our product candidates is highly uncertain. Estimating the nature,
timing, or cost of the development of any of our product candidates involves considerable judgment due to numerous risks
and uncertainties associated with developing gene therapies, including the uncertainty of:

● the scope, rate of progress and expense of our research and development activities;
● our ability to successfully manufacture and scale-up production;
● clinical trial protocols, speed of enrollment and resulting data;
● the effectiveness and safety of our product candidates;
● the timing of regulatory approvals; and
● our  ability  to  agree  to  ongoing  development  budgets  with  collaborators  who  share  the  costs  of  our

development programs.

A change in the outcome of any of these variables with respect to our product candidates that we may develop,

could mean a significant change in the expenses and timing associated with the development of such product candidate.

Research  and  development  expenses  for  the  year  ended  December  31,  2022  were  $197.6  million,  compared  to
$143.5  million  and  $122.4  million  for  the  years  ended  December  31,  2021  and  2020,  respectively.  Other  research  and
development  expenses  are  separately  classified  in  the  table  below.  These  are  not  allocated  as  they  are  deployed  across
multiple projects under development.

Huntington's disease (AMT-130)
Temporal lobe epilepsy (AMT-260)
Fabry disease (AMT-191)
Hemophilia B (AMT-060/061)
Programs in preclinical development and platform
related expenses
Total direct research and development expenses

2022

2021

2022 vs 2021

Year ended December 31, 
2020
(in thousands)
 6,905
$
 —
 749
 21,458

$

 9,317
 15,286
 2,003
 (6,264)

2021 vs 2020

$

 3,624
 913
 110
 (12,720)

$  19,846
 16,199
 2,862
 2,474

$  10,529
 913
 859
 8,738

 7,157
$  48,538

 7,986
$  29,025

 5,769
$  34,881

 (829)
$  19,513

$

 2,217
 (5,856)

Employee and contractor-related expenses
Facility expenses
Share-based compensation expenses
Disposables
Other expenses
Fair value changes related to contingent consideration
Total other research and development expenses

 64,935
 23,582
 18,402
 17,830
 17,223
 7,081
$  149,053

 55,725
 18,796
 12,822
 14,679
 5,818
 6,683
$  114,523

 41,694
 17,390
 11,995
 10,203
 6,237
 —
$  87,519

 9,210
 4,786
 5,580
 3,151
 11,405
 398
$  34,530

 14,031
 1,406
 827
 4,476
 (419)
 6,683
$  27,004

Total research and development expenses

$  197,591

$  143,548

$  122,400

$  54,043

$  21,148

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Direct research and development expenses

Huntington disease (AMT-130)

We  incurred  $19.8  million,  $10.5  million  and  $6.9  million  in  the  years  ended  December  2022,  2021  and  2020
respectively.  In  the  year  ended  December  31,  2022,  our  external  costs  for  the  development  of  AMT-130  were  primarily
related to the execution of our Phase I/II clinical trial in the U.S. and in Europe. In the years ended December 31, 2021 and
December  31,  2020  our  external  costs  for  the  development  of  AMT-130  were  primarily  related  to  the  execution  of  our
Phase I/II clinical trial in the U.S. and in the year ended December 31, 2021, costs were incurred for the preparation of the
Phase I/IIb clinical trial in Europe.

Temporal lobe epilepsy (AMT-260)

In years ended December 31, 2022, December 31, 2021 and December 31, 2020, we incurred $16.2 million, $0.9
million and nil, respectively, for the preclinical development of temporal lobe epilepsy, which we acquired from Corlieve
on  July  30,  2021.  The  increase  in  development  cost  in  the  year  ended  December  31,  2022  related  to  cost  incurred  in
relation to a toxicology study as well as manufacturing supplies for clinical development.

Fabry disease (AMT-191)

In  the  years  ended  December  31,  2022  December  31,  2021  and  December  31,  2020,  we  incurred  $2.9  million,
$0.9 million and $0.7 million, respectively, primarily related to our preclinical activities for the treatment of Fabry disease
(AMT-191).

Hemophilia B (AMT-060/061)

In the years ended December 31, 2022, December 31, 2021 and December 31, 2020, the external costs for our
hemophilia  B  program  were  primarily  related  to  the  execution  of  our  Phase  III  clinical  trial  and  Manufacturing
Development.  During  2020  and  up  to  the  Closing  of  the  CSL  Behring  Agreement  in  May  2021,  we  also  incurred  costs
related to the preparation of the global regulatory submissions and to prepare for commercialization of the Product. After
the Closing, CSL Behring is responsible for the clinical and regulatory activities and commercialization of the Product. We
managed the existing trials on behalf of CSL Behring until December 2022, at which point the trials began to be managed
by  CSL  Behring.  Direct  research  and  development  expenses  related  to  clinical  development  incurred  in  the  year  ended
December 31, 2022 and 2021 are presented net of reimbursements due from CSL Behring.

In the same periods, we also incurred costs related to the long-term follow-up of patients in our Phase I/II clinical
trial of AMT-060 and our Phase IIb clinical trial of etranacogene dezaparvovec. Our Phase IIb dose-confirmation study was
initiated  in  January  2018  and  dosing  occurred  in  July  and  August  2018.  Patients  were  dosed  as  part  of  our  Phase  I/II
clinical trial of AMT-060 in 2015 and 2016. These costs are presented net of reimbursements due from CSL Behring.

Preclinical programs & platform development

In  the  year  ended  December  31,  2022,  we  incurred  $7.2  million  of  costs  primarily  related  to  our  preclinical

activities associated with product candidates for various other research programs and technology innovation projects.

In  the  year  ended  December  31,  2021,  we  incurred  $8.0  million  of  costs  related  to  related  to  our  preclinical
activities for product candidates including SCA3 (AMT-150) as well as various other research programs and technology
innovation projects compared to $5.8 million in 2020. Costs for the year ended December 31, 2020 also include costs for
Hemophilia A (AMT-180), which was deprioritized in June 2020.

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Other research & development expenses

● We  incurred  $64.9  million  in  employee  and  contractor  expenses  in  the  year  ended  December  31,  2022
compared to $55.7 million in 2021 and $41.7 million in 2020. Our cost increased in 2022 by $9.2 million
compared to 2021 primarily as a result of an increase in personnel and contractor related expenses to support
our  growth.  Costs  increased  by  $14.0  million  in  2021  compared  to  2020  as  a  result  of  the  recruitment  of
personnel to support the preclinical and clinical trial development of our product candidates;

● We incurred $23.6 million in operating expenses and depreciation expenses related to our rented facilities in
the  year  ended  December  31,  2022  compared  to  $18.8  million  in  2021  and  $17.4  million  in  2020.  The
increase  in  2022  compared  to  2021  of  $4.8  million  primarily  related  to  additional  sites  in  Lexington  and
increased depreciation expense related to the expansion of the Amsterdam facility in prior year. The increase
in 2021 compared to 2020 of $1.4 million primarily related to expansion of the Amsterdam facility;

● We  incurred  $17.8  million  in  disposables  costs  in  the  year  ended  December  31,  2022  compared  to  $14.7
million in the year ended December 31, 2021 and $10.2 million in the year ended December 31, 2020. The
increases are primarily related to the expansion of our activities to support the development of our product
candidates;  

● We  incurred  $18.4  million  in  share-based  compensation  expenses  in  the  year  ended  December  31,  2022
compared  to  $12.8  million  in  2021  and  $12.0  million  in  2020.  The  increase  in  2022  compared  to  2021  of
$5.6  million  was  primarily  driven  by  the  increase  in  awards  granted,  including  those  to  newly  recruited
personnel as well as an increase in expense related to performance share units that were deemed probable.
The  increase  in  2021  compared  to  2020  of  $0.8  million  was  driven  primarily  by  grants  to  newly  recruited
personnel offset by share-based compensation expenses recorded in relation to the termination of one of our
executives in 2020;

● We incurred $17.2 million in other expenses in the year ended December 31, 2022 compared to $5.8 million
in 2021 and $6.2 million in 2020. The increase in 2022 compared to 2021 of $11.4 million is primarily due to
$7.0 million of contractual payments we owed to licensors upon FDA approval of HEMGENIX™ and $1.1
million owed to a licensor for a valid patent claim granted within the EU. The decrease in 2021 compared to
2020 of $0.4 million is a combination of not incurring any expenses related to license payments without an
alternative  future  use  like  in  2020  ($3.4  million)  offset  by  various  increases,  including  increases  in
professional  fees  as  a  result  of  expanding  the  organization  and  to  support  the  cGMP  validation  of  our
Lexington facility; and

● We incurred $7.1 million of expenses for the year ended December 31, 2022 related to an increase in the fair
value of contingent consideration associated with the Corlieve Transaction, compared to $6.7 million and nil
for the same periods in 2021 and 2020.

Selling, general and administrative expenses

Our  general  and  administrative  expenses  consist  principally  of  employee,  office,  consulting,  legal  and  other
professional and administrative expenses. We incurred expenses associated with operating as a public company, including
expenses for personnel, legal, accounting and audit fees, board of directors’ costs, directors' and officers' liability insurance
premiums,  Nasdaq  listing  fees,  expenses  related  to  investor  relations  and  fees  related  to  business  development  and
maintaining  our  patent  and  license  portfolio.  Our  selling  costs  include  employee  expenses  as  well  as  professional  fees
related to the preparation of a commercial launch of etranacogene dezaparvovec and advisory fees related to obtaining the
CSL Behring Agreement.

Selling, general and administrative expenses for the year ended December 31, 2022 were $55.1 million, compared

to $56.3 million and $42.6 million for the years ended December 31, 2021 and 2020, respectively.

● We incurred $21.1 million in personnel and contractor expenses in 2022 compared to $16.0 million in 2021
and $13.6 million in 2020. The increase in 2022 of $5.0 million, compared to 2021, and the increase in 2021
compared  to  2020  of  $2.4  million  was  primarily  driven  by  an  increase  in  personnel  and  contractor  related
expenses to support our growth;

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● We incurred $15.5 million of share-based compensation expenses in 2022 compared to $12.8 million in 2021
and $9.8 million in 2020. The increase in 2022 compared to 2021 of $2.7 million was primarily related to the
increase in awards granted, including those to newly recruited personnel as well as an increase in expense
related  to  performance  share  units  that  were  deemed  probable.  The  increase  in  2021  compared  to  2020  of
$3.0 million was also primarily driven by the increase in awards granted including those to newly recruited
personnel;

● We incurred $7.1 million in professional fees in 2022 compared to $9.4 million in 2021 and $8.0 million in
2020.  We  regularly  incur  accounting,  audit  and  legal  fees  associated  with  operating  as  a  public  company.
Additionally, in the years ended December 31, 2021 and December 31, 2020, we incurred professional fees
in relation to our licensing transaction with CSL Behring and our acquisition of Corlieve; and

● We  incurred  $1.0  million,  $5.1  million  and  nil  in  financial  advisory  fees  in  relation  to  our  licensing
transaction with CSL Behring in the years ended December 31, 2022, December 31, 2021 and December 31,
2020.  These  fees  are  calculated  as  a  percentage  of  license  revenue  recognized  under  the  CSL  Behring
Agreement.

Other items, net

We  recognized  $0.3  million,  $3.0  million  and  nil  in  other  income  in  relation  to  the  equity  stake  received  in
VectorY B.V. in conjunction with a settlement agreement that the Company and VectorY B.V. entered into in April 2021
for the years ended December 31, 2022, 2021 and 2020, respectively.

We  recognized  nil  in  other  income  of  employee  retention  credit  under  the  U.S.  CARES  Act  in  the  year  ended

December 31, 2022, compared to $2.6 million and nil such income for the same periods in 2021 and 2020, respectively.

In  2022,  we  recognized  $5.6  million  in  income  related  to  payments  received  from  European  authorities  to
subsidize our research and development efforts in the Netherlands compared to $5.3 million in 2021 and $1.9 million in
2020.

Other income for the years ended December 31, 2022, 2021 and 2020 also includes income from the subleasing of

a portion of our Amsterdam facility. We present expenses related to such income as other expense.

Other non-operating items, net

Our non-operating items, net, for the years ended December 31, 2022, 2021 and 2020 were as follows:

Year ended December 31, 

2022

2021

2020

2022 vs 2021

2021 vs 2020

Interest income
Interest expense
Foreign currency gains / (losses), net
Other non-operating gains / (losses)
Total non-operating income, net

    $

 609     $

 162     $

 938     $

(in thousands)

 447     $

 (11,704)
 23,235
 2,760
$  14,900

 (7,474)
 29,660
 (160)
$ 22,188

 (3,825)
 (13,613)
 483
$ (16,017)

 (4,230)
 (6,425)
 2,920
$  (7,288)

 (776)
 (3,649)
 43,273
 (643)
$  38,205

We  recognize  interest  income  associated  with  our  cash  and  cash  equivalents  and  investment  securities.  We
recognized  $0.6  million  interest  income  in  2022,  $0.2  million  in  2021  and  $0.9  million  in  2020.  Our  interest  income
increased in 2022 by $0.4 million compared to 2021 primarily due to the interest income earned on investment securities.
Interest income decreased by $0.7 million in 2021 compared to 2020 due to a changes in market interest rates during 2021.

We recognized $11.7 million interest expense in 2022, $7.5 million in 2021 and $3.8 million in 2020. Our interest
expense in 2022 primarily increased by $4.2 million compared to 2021 due to an increase in market interest rates in 2022.
Our interest expense in 2021 primarily increased by $3.6 million compared to 2020 due to the additional $35.0 million we
drew down on our loan facility from Hercules in January 2021.

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We hold monetary items and enter into transactions in foreign currencies, predominantly in euros and U.S. dollars.
We recognize foreign exchange results related to changes in these foreign currencies. In 2022, we recognized a net foreign
currency gain of $23.2 million related to our borrowings from Hercules and our cash and cash equivalents and investment
securities as well as loans between entities within the uniQure group, compared to a net gain of $29.7 million in 2021 and a
net loss of $13.6 million in 2020.

In 2022, we recognized a $2.8 million net gain within Other non-operating gains / (losses) related to a decrease in
the  fair  value  market  value  of  derivative  financial  liability  related  to  the  change  of  control  payment  (“CoC-payment”)
compared to a net loss of $0.2 million in 2021 and a net gain of $0.5 million in 2020. We recorded the net gain in 2022 as
no change of control event had occurred as of the February 22, 2023 Termination Date of the amended BMS CLA. We had
recorded  a  net  loss  in  2021  of  $0.2  million  in  2021  for  the  increase  in  the  fair  market  value  of  the  derivative  financial
liability  related  to  the  CoC-payment.  We  recorded  a  net  gain  $0.5  million  in  2020  within  Other  non-operating  gains  /
(losses) related to the net impact of terminating the BMS warrants and recognizing a derivative financial liability for the
CoC-payment.  

Income tax

We recognized $1.5 million of deferred tax income in 2022, compared to $3.2 million of deferred tax expense in
2021 and $16.4 million of deferred tax income in 2020. Deferred tax income recorded in 2022 results from deferred tax
benefits recorded related to the buildup of net operating losses by the French entity which are partially offset by deferred
tax  expense  recorded  in  the  U.S.  as  a  result  of  the  consumption  of  net  operating  losses  as  well  as  deferred  tax  expense
resulting  from  the  release  of  valuation  allowance  for  the  tax  benefit  of  share  issuance  costs  within  the  Netherlands.
Deferred tax expense recorded in 2021 results from the consumption of net operating tax losses by our U.S. entity as well
as deferred tax expense resulting from the release of valuation allowance for the tax benefit of share issuance costs within
the Netherlands. Deferred tax income recorded in 2020 results from the release of the valuation allowance recorded for our
net deferred tax assets by our U.S. entity.

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Financial Position, Liquidity and Capital Resources

As  of  December  31,  2022,  we  had  cash  and  cash  equivalents,  restricted  cash  and  investment  securities  of
$396.0 million. Until such time, if ever, as we can generate substantial cash flows from successfully commercializing our
proprietary  product  candidates,  we  expect  to  finance  our  cash  needs  through  a  combination  of  equity  offerings,  debt
financings, collaborations, strategic alliances and marketing, distribution, and licensing arrangements. We believe that our
cash and cash equivalents and investment securities will fund our operations into 2025 assuming the achievement of $100.0
million of first commercial sale milestone in the U.S. and into the first half of 2025 if the $75.0 million first commercial
sale milestone in any of the five contractually defined European countries would be achieved prior to July 2, 2023 under
the CSL Behring Agreement. Our material cash requirements include the following contractual and other obligations:

Debt

As  of  December  31,  2022,  we  had  an  outstanding  loan  amount  owed  to  Hercules  for  an  aggregate  principal
amount of $100.0 million. Future interest payments and financing fees associated with the loan total $44.5 million, with
$14.9  million  payable  within  12  months.  We  are  contractually  required  to  repay  the  $100.0  million  in  full  in  December
2025.

Leases

We  entered  into  lease  arrangements  for  facilities,  including  corporate,  manufacturing  and  office  space.  As  of
December 31, 2022, we had fixed lease payment obligations of $60.6 million, with $8.3 million payable within 12 months.

Commitments related to Corlieve acquisition (nominal amounts)

In  relation  to  the  Corlieve  Transaction,  we  entered  into  commitments  to  make  payments  to  the  former
shareholders upon the achievement of certain contractual milestones. The commitments include payments related to post-
acquisition services that we agreed to as part of the SPA. As of December 31, 2022, our commitment amounts include up to
$42.8 million in potential milestone payments through Phase I/II development and $171.3 million in potential milestone
payments  associated  with  Phase  III  development  and  the  approvals  of  AMT-260  in  the  U.S.  and  EU.  The  timing  of
achieving these milestones and consequently the timing of payments, as well as whether the milestone will be achieved at
all, is generally uncertain. These payments are owed in Euro and have been translated at the foreign exchange rate as of
December 31, 2022, of $1.07/€1.00. As of December 31, 2022, we expect these obligations will become payable between
2023 and 2031. If and when due, up to 25% of the milestone payments can be settled with our ordinary shares.

Commitments related to licensors and financial advisors

We have obligations to make future payments to third parties that become due and payable on the achievement of
certain development, regulatory and commercial milestones (such as the start of a clinical trial, filing of a BLA, approval
by the FDA or product launch) or as a result of collecting payments related to our License Sale to CSL Behring. We also
owe payments to a financial advisor related to any payments we will collect under the CSL Behring Agreement.

The table below summarizes our consolidated cash flow data for the years ended December 31:

Cash, cash equivalents and restricted cash at the beginning of the
period

Net cash (used in) / generated from operating activities
Net cash used in investing activities
Net cash generated from financing activities

Foreign exchange impact
Cash, cash equivalents and restricted cash at the end of period

88

2022

Year ended December 31, 
2021
(in thousands)

2020

$

$

 559,353
 (145,060)
 (182,734)
 1,445
 (1,831)
 231,173

$

$

 247,680
 287,959
 (67,387)
 94,858
 (3,757)
 559,353

$

$

 380,726
 (134,828)
 (9,484)
 7,444
 3,822
 247,680

    
    
    
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We  had  previously  incurred  losses  and  cumulative  negative  cash  flows  from  operations  since  our  business  was
founded  by  our  predecessor  entity  AMT  Holding  N.V.  in  1998,  with  the  exception  of  generating  income  in  2021  after
receiving  the  upfront  payment  upon  Closing  of  the  CSL  Behring  Agreement.  We  continue  to  incur  losses  in  the  current
period. We recorded a net loss of $126.8 million for the year ended December 31, 2022, and net income of $329.6 million
in  2021,  and  a  net  loss  of  $125.0  million  in  2020.  As  of  December  31,  2022,  we  had  an  accumulated  deficit  of  $581.9
million.

Sources of liquidity

From  our  first  institutional  venture  capital  financing  in  2006  through  May  2021,  we  funded  our  operations
primarily  through  private  and  public  placements  of  equity  securities  and  convertible  and  other  debt  securities  as  well  as
payments  from  our  collaboration  partners.  In  May  2021,  we  received  a  $462.4  million  cash  payment  due  from  CSL
Behring upon Closing. During 2022 we collected the $55.0 million related to CSL Behring’s global regulatory submissions
for etranacogene dezaparvovec in March and April 2022 and are eligible to receive additional milestone payments, as well
as royalties on net sales, from CSL Behring.

On March 1, 2021, we entered into a Sales Agreement with SVB Leerink LLC (“SVB Leerink”) with respect to an
at-the-market  (“ATM”)  offering  program,  under  which  we  may,  from  time  to  time  in  our  sole  discretion,  offer  and  sell
through SVB Leerink, acting as agent, our ordinary shares, up to an aggregate offering price of $200.0 million. We will pay
SVB Leerink a commission equal to 3% of the gross proceeds of the sales price of all ordinary shares sold through it as a
sales agent under the Sales Agreement. In the year ended December 30, 2021, we received net proceeds of $29.6 million
from the issuance of 921,730 ordinary shares under the Sales Agreement that took place during March and April of that
year. We did not issue in ordinary shares under the Sales Agreement for the 12 month period ended December 31, 2022.

On  January  29,  2021,  we  drew  down  $35  million  under  a  facility  agreement  with  Hercules.  We  drew  down  a

further $30 million under our 2021 Restated Facility with Hercules in December 2021.

We are subject to certain covenants under our 2021 Restated Facility and may become subject to covenants under
any  future  indebtedness  that  could  limit  our  ability  to  take  specific  actions,  such  as  incurring  additional  debt,  making
capital expenditures, or declaring dividends, which could adversely impact our ability to conduct our business. In addition,
our pledge of assets as collateral to secure our obligations under the 2021 Restated Facility may limit our ability to obtain
debt financing. The 2021 Restated Facility permits us to issue up to $500.0 million of convertible debt as well as to enter
into a transaction to sell the royalties under the CSL Behring agreement subject to certain conditions.

To the extent we need to finance our cash needs through equity offerings or debt financings, such financing may
be subject to unfavorable terms including without limitation, the negotiation and execution of definitive documentation, as
well as credit and debt market conditions, and we may not be able to obtain such financing on terms acceptable to us or at
all.  If  financing  is  not  available  when  needed,  including  through  debt  or  equity  financings,  or  is  available  only  on
unfavorable terms, we may be unable to meet our cash needs. If we raise additional funds through collaborations, strategic
alliances or marketing, distribution, or licensing arrangements with third parties, 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, which could have a material
adverse effect on our business, financial conditions, results of operations and cash flows.

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Net Cash used in / generated from operating activities

Cash flows from operating activities
Net (loss) / income
Adjustments to reconcile net (loss) /income to net cash (used in) / generated
from operating activities:

Depreciation and amortization
Share-based compensation expenses
Deferred tax (income) / expense
Change in fair value of contingent consideration and derivative financial
instruments, net
Unrealized foreign exchange (gains) / losses, net
Change in deferred revenue
Other non-cash items, net

Changes in operating assets and liabilities:

Accounts receivable, prepaid expenses, and other current assets and
receivables
Contract asset related to CSL Behring milestone payments
Inventories
Accounts payable
Accrued expenses, other liabilities, and operating leases
Net cash (used in) / generated from operating activities

2022

Year ended December 31, 
2021
(in thousands)

2020

$ (126,789)

$ 329,589

$  (125,024)

 8,537
 34,204
 (1,470)

 4,320
 (22,083)
 -
 1,605

 7,299
 25,635
 3,210

 6,843
 (31,335)
 -
 (2,800)

 10,648
 21,831
 (16,419)

 (483)
 14,730
 (33,642)
 -

 (4,083)
 (45,000)
 (6,924)
 9,238
 3,385
$ (145,060)

 (3,959)
 (55,000)
 -
 (727)
 9,204
$ 287,959

 (6,967)
-
 -
 (2,701)
 3,199
$  (134,828)

Net cash used in operating activities was $145.1 million for the year ended December 31, 2022, and consisted of a
net loss of $126.8 million adjusted for non-cash items, including depreciation and amortization expense of $8.5 million,
share-based  compensation  expense  of  $34.2  million,  changes  in  the  fair  value  of  contingent  consideration  and  the
derivative financial liability of $4.3 million, unrealized foreign exchange gains of $22.1 million and a change in deferred
taxes of $1.5 million. Net cash generated from operating activities also included unfavorable changes in operating assets
and liabilities of $43.4 million. There was a net increase in accounts receivable, prepaid expenses, and other current assets
and receivables of $4.1 million. There was a net increase in contract assets related to CSL Behring milestone payments of
$45.0 million. The net increase related to $100.0 million recognized as a contract asset in the current period and collection
of $55.0 million of the contract asset related to the CSL milestones of $55.0 million in March 2022 and April 2022. There
was  an  increase  in  inventories  of  $6.9  million  related  to  the  production  of  HEMGENIXTM  under  the  CSL  Behring
Agreement.  These  changes  also  relate  to  a  net  increase  in  accounts  payable,  accrued  expenses,  other  liabilities,  and
operating leases of $12.6 million, primarily related to an increase in accounts payable.

Net  cash  generated  from  operating  activities  was  $288.0  million  for  the  year  ended  December  31,  2021,  and
consisted of net income of $329.6 million adjusted for non-cash items, including depreciation and amortization expense of
$7.3 million, share-based compensation expense of $25.6 million, a change in fair value of contingent consideration of $6.8
million, unrealized foreign exchange gains of $31.3 million, a change in deferred taxes of $3.2 million and other non-cash
items,  net,  of  $2.8  million.  Net  cash  generated  from  operating  activities  also  included  unfavorable  changes  in  operating
assets and liabilities of $50.3 million, which includes $55.0 million recognized as a contract asset related to probable CSL
Behring  milestone  payments.  Additionally,  these  changes  also  related  to  a  net  increase  in  accounts  receivable,  prepaid
expenses,  and  other  current  assets  and  receivables  of  $4.0  million  primarily  related  to  an  increase  in  various  prepaids,
including  those  related  to  clinical  trials,  partially  offset  by  decrease  in  receivables  as  a  result  of  collection  of  the  BMS
milestone  that  was  recorded  as  of  December  31,  2020  and  collection  of  the  CSL  Behring  receivables  recorded  as  of
December  31,  2020  for  expenses  for  which  we  had  a  right  of  reimbursement  and  a  net  increase  in  accounts  payable,
accrued expenses, other liabilities, and operating leases of $8.5 million primarily related to an increase in various accruals
for  goods  received  from  and  services  provided  by  vendors  and  an  increase  in  personnel  accruals. Net income primarily
consisted  of  $462.4  million  license  revenue  recognized  on  Closing  and  $55.0  million  license  revenue  related  to  CSL
Behring’s global regulatory submissions for etranacogene dezaparvovec that occurred in March and April 2022 and were
considered probable on December 31, 2021.

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Net  cash  used  in  operating  activities  was  $134.8  million  for  the  annual  period  ended  December  31,  2020,  and
consisted of a net loss of $125.0 million adjusted for non-cash items, including depreciation and amortization expense of
$10.6 million, share-based compensation expense of $21.8 million, fair value gain of derivative financial instruments of
$0.5 million, unrealized foreign exchange loss of $14.7 million, a change in deferred tax income of $16.4 million and a
decrease in unamortized deferred revenue of $33.6 million. Net cash used in operating activities also included unfavorable
changes  in  operating  assets  and  liabilities  of  $6.5  million.  These  changes  primarily  related  to  a  net  increase  in  accounts
receivable and accrued income, prepaid expenses, and other current assets of $7.0 million and a net increase in accounts
payable, accrued expenses, other liabilities, and operating leases of $0.5 million.

Net cash used in investing activities

In 2022, we used $182.7 million in our investing activities compared to $67.4 million in 2021 and $9.5 million in

2020.

Investment in investment securities
Build out of Amsterdam site
Build out of Lexington site
Acquisition of Corlieve, net of cash acquired
Acquisition of licenses, patents, and other rights
Total investments

2022

Year ended December 31, 
2021
(in thousands)

2020

$  (163,146) $
 (11,904)
 (5,784)
 (1,900)
 —

 — $

 (12,412)
 (5,026)
 (49,949)
 —

$  (182,734) $  (67,387) $

 —
 (4,534)
 (2,737)
 —
 (2,213)
 (9,484)

In 2022, we invested $163.1 million of our cash on hand into euro and dollar denominated government bonds. We

made no such investments in 2021 and 2020.

In 2022, we invested $11.9 million in the build out of our Amsterdam site compared to $12.4 million in 2021 and
$4.5 million in 2020. Our investments in 2022 related to investments into equipment while in 2021 investments primarily
related to the construction of additional laboratories to support the expansion of our research and development activities as
well as the construction of a cleanroom designed to be capable of manufacturing cGMP materials at a 500-liter scale.

In 2022, we invested $5.8 million in our facility in Lexington compared to $5.0 million in 2021 and $2.7 million

in 2020. Our investments in 2022 increased as a result of the two new Lexington sites, which commenced in 2022.

We paid EUR 1.8 million ($1.9 million) to acquire the remaining outstanding shares of Corlieve in February, July
and September 2022. We paid EUR 42.1 million ($49.9 million), net of EUR 2.8 million ($3.3 million) of cash acquired,
during  the  year  ended  December  31,  2021  to  acquire  97.7%  of  the  outstanding  ordinary  shares  of  Corlieve  on  July  30,
2021.

Net cash generated from financing activities

Cash flows from financing activities
Proceeds from issuance of shares related to employee stock option and
purchase plans
Proceeds from loan increment, net of debt issuance costs
Proceeds from issuance of ordinary shares, net of issuance costs
Repayment of debt assumed through Corlieve Transaction
Net cash generated from financing activities

2022

Year ended December 31, 
2021
(in thousands)

2020

$

$

 1,445
 -
 -
 -
 1,445

$

$

 2,798
 64,067
 29,565
 (1,572)
 94,858

$

$

 7,444
-
 -
-
 7,444

In 2022, we received $1.4 million from the exercise of options to purchase ordinary shares issued in accordance

with our share incentive plans, compared to $2.8 million in 2021 and $7.4 million in 2020.

In January 2021, we received $34.6 million net proceeds from the 2021 Amended Facility and in December 2021
we received $29.5 million net proceeds from the 2021 Restated Facility for combined net proceeds of $64.1 million (nil in
2020 and 2022).

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We received net proceeds of $29.6 million associated with our ATM offering in March and April 2021. No such

proceeds were received in 2022 or 2020.

Upon the acquisition of Corlieve, Corlieve held loans with an outstanding amount equal to EUR 1.4 million ($1.6

million). During the year ended December 31, 2021, the loans were repaid in their entirety.

Funding requirements

We  believe  that  our  cash  and  cash  equivalents  and  investment  securities  will  fund  our  operations  into  2025
assuming the achievement of $100.0 million of first commercial sale milestone in the U.S. and into the first half of 2025 if
the  $75.0  million  first  commercial  sale  milestone  in  any  of  the  five  contractually  defined  European  countries  would  be
achieved prior to July 2, 2023 under the CSL Behring Agreement. Our future capital requirements will depend on many
factors, including but not limited to:

● contractual  milestone  payments  and  royalties  we  might  be  owed  in  accordance  with  the  CSL  Behring

Agreement;

● earnout payments we might owe the former shareholders of Corlieve, which are subject to the achievement of

specific development and regulatory milestones;

● the scope, timing, results, and costs of our current and planned clinical trials, including those for AMT-130 in

Huntington’s disease;

● the extent to which we acquire or in-license other businesses, products, product candidates or technologies;
● the amount and timing of revenue, if any, we receive from manufacturing products for CSL Behring;
● the scope, timing, results and costs of preclinical development and laboratory testing of our additional product

candidates;

● the need for additional resources and related recruitment costs to support the preclinical and clinical development

of our product candidates;

● the  need  for  any  additional  tests,  studies,  or  trials  beyond  those  originally  anticipated  to  confirm  the  safety  or

efficacy of our product candidates and technologies;

● the cost, timing and outcome of regulatory reviews associated with our product candidates;
● our ability to enter into collaboration arrangements in the future;
● the costs and timing of preparing, filing, expanding, acquiring, licensing, maintaining, enforcing, and prosecuting

patents and patent applications, as well as defending any intellectual property-related claims;

● the costs associated with maintaining quality compliance and optimizing our manufacturing processes, including

the operating costs associated with our Lexington, Massachusetts manufacturing facility; and
● the costs associated with increasing the scale and capacity of our manufacturing capabilities.

Item 7A.  Quantitative and Qualitative Disclosures About Market Risk

We  are  exposed  to  a  variety  of  financial  risks  in  the  normal  course  of  our  business,  including  market  risk
(including  currency,  price,  and  interest  rate  risk),  credit  risk  and  liquidity  risk.  Our  overall  risk  management  program
focuses  on  preservation  of  capital  and  the  unpredictability  of  financial  markets  and  has  sought  to  minimize  potential
adverse effects on our financial performance and position.

Market Risk

Currency risk

We are exposed to foreign exchange risk arising from various currencies, primarily with respect to the U.S. dollar
and euro and to a lesser extent to the British pound and the Swiss Franc. As our U.S. operating entity primarily conducts its
operations in U.S. dollars, its exposure to changes in foreign currency is insignificant. Similarly, the exposure to changes in
foreign currencies of our Swiss and French entities are insignificant as well.

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Our Dutch entities hold significant amounts of U.S. dollars in cash and cash equivalents and investment securities,
have debt and interest obligations to Hercules denominated in U.S. dollars, generate collaboration revenue denominated in
U.S.  dollars,  receive  services  from  vendors  denominated  in  U.S.  dollars  and  occasionally  British  Pounds  and  fund  the
operations  of  our  U.S.  operating  entity  in  U.S.  dollars.  Foreign  currency  denominated  account  receivables  and  account
payables are short-term in nature (generally 30 to 45 days).

Variations  in  exchange  rates  will  impact  earnings  and  other  comprehensive  income  or  loss.  On  December  31,
2022, if the euro had weakened 10% against the U.S. dollar with all other variables held constant, pre-tax loss for the year
would have been $20.4 million lower (December 31, 2021: pre-tax income $42.2 million higher), and other comprehensive
income or loss would have been $24.4 million higher (December 31, 2021: $23.5 million higher). Conversely, if the euro
had strengthened 10% against the U.S. dollar with all other variables held constant, pre-tax loss for the year would have
been $20.4 million higher (December 31, 2021: pre-tax income $42.2 million lower), and other comprehensive income or
loss would have been $32.1 million lower (December 31, 2021: $31.6 million lower).

We  strive  to  mitigate  foreign  exchange  risk  through  holding  sufficient  funds  in  euro  and  dollars  to  finance

budgeted cash flows for generally 18 months.

The sensitivity in other comprehensive income to fluctuations in exchange rates primarily relates to the translation

of the net assets of our Dutch entities from their functional currency euro into our reporting currency U.S. dollar.

Price risk

The  market  prices  for  the  provision  of  preclinical  and  clinical  materials  and  services,  as  well  as  external

contracted research, may vary over time.

The commercial prices of any of our products or product candidates are currently uncertain.

We are not exposed to commodity price risk.

We do not hold investments classified as available-for-sale or at fair value through profit or loss; therefore, we are

not exposed to equity securities price risk.

Interest rate risk

Our interest rate risk arises from short- and long-term debt and investment securities.

In June 2013, we entered into the Hercules Agreement, which was last amended and restated in December 2021,
under which our borrowings bear interest at a variable rate with a fixed floor. Long-term debt issued at fixed rates expose
us to fair value interest rate risk. As of December 31, 2022, the loan bore an interest rate of 12.2%.

As  of  December  31,  2022,  if  interest  rates  on  borrowings  had  been  1.0%  higher  with  all  other  variables  held
constant, pre-tax earnings for the year would have been $1.0 million lower (2021: $0.7 million lower; 2020: $0.3 million
lower.)

We invest in government debt in accordance with our investment policy. We are exposed to interest rate risk as
market interest rates could differ from the interest rates that we fix at the time of acquiring these investment securities. As
we intend to hold these to maturity, we do not recognize changes in the fair value of our investment which are caused by
changes in market interest rates.

This means that a change in prevailing interest rates may cause the fair value of the investment to fluctuate. For
example, if we hold a security that was issued at a fixed interest rate at the then-prevailing rate and the prevailing interest
rate later rises, the fair value of our investment will probably decline.

The average duration of all of our investment securities held as of December 31, 2022, was less than 14 months.
Due to the relatively short-term nature of these financial instruments and our ability and intention to hold these investments
to maturity, we believe there is no material exposure to interest rate risk.

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Credit Risk

Credit risk is managed on a consolidated basis. Credit risk arises from cash and cash equivalents and deposits with
banks  and  financial  institutions,  outstanding  receivables  and  committed  transactions  with  collaboration  partners  and
security deposits paid to landlords. We currently have no wholesale debtors other than BMS and CSL Behring.

We deposited funds as security to our landlord related to our facility in Amsterdam. We also deposited funds to the

provider of our U.S. corporate credit cards. The deposits are neither impaired nor past due.

Our  cash  and  cash  equivalents  include  bank  balances,  demand  deposits  and  other  short-term  highly  liquid
investments (with maturities of less than three months at the time of purchase) that are readily convertible into a known
amount of cash and are subject to an insignificant risk of fluctuation in value. Restricted cash includes deposits made in
relation to facility leases. We also have short- and long-term investment securities in U.S. and European government bonds
maturing  within  three  to  14  months.  Our  investment  policy  requires  us  to  invest  with  counterparties  with  the  highest
investment credit rating. Due to the high credit quality of our counterparties, we believe there is no material exposure to
credit risk in our portfolio of investment securities.

Liquidity Risk

We  believe  that  our  cash  and  cash  equivalents  and  investment  securities  will  fund  our  operations  into  2025
assuming the achievement of $100.0 million of first commercial sale milestone in the U.S. and into the first half of 2025 if
the  $75.0  million  first  commercial  sale  milestone  in  any  of  the  five  contractually  defined  European  countries  would  be
achieved  prior  to  July  2,  2023  under  the  CSL  Behring  Agreement.  The  table  below  analyzes  our  financial  liabilities  in
relevant maturity groupings based on the length of time until the contractual maturity date, as of the balance sheet date.
Disclosed  in  the  table  below  are  the  contractual  undiscounted  cash  flows.  Balances  due  within  12  months  equal  their
carrying value as the impact of discounting is not significant.

Undefined

Less than
1 year

Between
1 - 3 years
(in thousands)

Between
3 - 5 years

Over 5 years

At December 31, 2022
Long-term debt
Accounts payable, accrued expenses and
other current liabilities
Commitments related to Corlieve
acquisition (maximum nominal amounts)
Total
At December 31, 2021
Long-term debt
Accounts payable, accrued expenses and
other current liabilities
Derivative financial instruments
Commitments related to Corlieve
acquisition (maximum nominal amounts)
Total

$

$

$

$

 — $

 14,870

$

 129,622

$

 — $

 —  

 41,555

 —  

 —  

 214,070
 214,070

$

 —  
$

 56,425

 —  
$

 129,622

 —  
 — $

 — $

 7,984

$

 26,054

$

 101,549

$

 —  

 30,989

 2,805

 —  

 —  
 —  

 —  
 —  

 226,862
 229,667

$

 2,269
 41,242

$

 —  
$

 26,054

 —  
$

 101,549

 —

 —

 —
 —

 —

 —
 —

 —
 —

During the year ended December 31, 2021, we recorded an amount for the derivative financial liability related to
the  CoC-payment  under  the  amended  BMS  CLA.  Generally,  the  CoC-payment  would  have  been  due  to  BMS  upon  the
consummation of a change in control transaction prior to November 30, 2026 or BMS’s delivery of cessation notices for all
four active Collaboration Targets. The derivative financial liability therefore had no contractual maturity date for the year
ended  December  31,  2021.  We  released  the  derivative  financial  liability  during  the  year  ended  December  31,  2022  as  a
result of the termination of the amended BMS CLA as of February 22, 2023.

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In  relation  to  the  Corlieve  Transaction,  we  entered  into  commitments  to  make  payments  to  the  former
shareholders upon the achievement of certain contractual milestones. The commitments include payments related to post-
acquisition services that we agreed to as part of the SPA. The timing of achieving these milestones, as well as whether the
milestone  will  be  achieved  at  all,  and  consequently  the  timing  of  payments  is  generally  uncertain  with  the  exception  of
  payments  we  owed  upon  acquiring  the  remaining  outstanding  shares  as  well  as  certain  payments  for  post-acquisition
services made in 2022. We expect these obligations will become payable between 2023 and 2031. If and when due, up to
25% of the milestone payments can be settled with our ordinary shares.

Item 8.  Financial Statements and Supplementary Data

Our  consolidated  financial  statements  and  the  notes  thereto,  included  in  Part  IV,  Item  15,  are  incorporated  by

reference into this Item 8.

Item 9.  Changes in and Disagreements With Accountants on Accounting and Financial Disclosure

None.

Item 9A.  Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our  management,  with  the  participation  of  our  chief  executive  officer  (“CEO”,  our  principal  executive  officer)
and chief financial officer (“CFO”, our principal financial officer), evaluated the effectiveness of our disclosure controls
and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of December 31, 2022. Based on
such evaluation, our CEO and CFO have concluded that as of December 31, 2022, our disclosure controls and procedures
were effective.

Management’s Annual Report on Internal Control Over Financial Reporting

Our  management  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial
reporting,  as  defined  in  Rules  13a-15(f)  and  15d-15(f)  under  the  Exchange  Act.  This  rule  defines  internal  control  over
financial  reporting  as  a  process  designed  by,  or  under  the  supervision  of,  a  company’s  chief  executive  officer  and  chief
financial officer 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 and 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 our assets that could have a material effect on the financial statements.

We  assessed  the  effectiveness  of  our  internal  control  over  financial  reporting  as  of  December  31,  2022.  This
assessment was performed under the direction and supervision of our CEO and CFO and based on criteria established in
Internal  Control  -  Integrated  Framework  (2013)  issued  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway
Commission (“COSO”). Our management’s assessment of the effectiveness of our internal control over financial reporting
included  testing  and  evaluating  the  design  and  operating  effectiveness  of  our  internal  controls.  In  our  management’s
opinion, we have maintained effective internal control over financial reporting as of December 31, 2022, based on criteria
established in the COSO 2013 framework.

Our  independent  registered  public  accounting  firm,  which  has  audited  the  consolidated  financial  statements
included in this Annual Report on Form 10-K, has also issued an audit report on the effectiveness of our internal control
over financial reporting as of December 31, 2022. Their report is filed within this Annual Report on Form 10-K.

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Inherent Limitations of Internal Controls

Our management, including our CEO and CFO, does not expect that our disclosure controls and procedures or our
internal controls will prevent all errors and all fraud. A control system, no matter how well conceived and operated, can
provide only reasonable, not absolute, assurance that the objectives of the control system are met. Because of the inherent
limitations  in  all  control  systems,  no  evaluation  of  controls  can  provide  absolute  assurance  that  all  control  issues  and
instances  of  fraud,  if  any,  within  the  Company  have  been  detected.  These  inherent  limitations  include  the  realities  that
judgments  in  decision-making  can  be  faulty,  and  that  breakdowns  can  occur  because  of  a  simple  error  or  mistake.
Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or
by management override of the control. The design of any system of controls also is based in part upon certain assumptions
about  the  likelihood  of  future  events,  and  there  can  be  no  assurance  that  any  design  will  succeed  in  achieving  its  stated
goals under all potential future conditions. Over time, controls may become inadequate because of changes in conditions,
or the degree of compliance with the policies or procedures may deteriorate. 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. Because of its inherent limitations, internal control
over financial reporting may not prevent or detect misstatements due to error or fraud.

Changes in internal control over financial reporting

During the fourth quarter of 2022, there were no changes in our internal control over financial reporting (as defined
in  Rule  13a-15(f)  under  the  Exchange  Act)  that  materially  affected,  or  are  reasonably  likely  to  materially  affect,  our
internal control over financial reporting.  

Item 9B.  Other Information

None.

Item 9C.  Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

None.

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Item 10.  Directors, Executive Officers and Corporate Governance

Part III

The  information  required  by  this  Item  regarding  our  directors,  executive  directors  and  corporate  governance  is
incorporated into this section by reference to our Proxy Statement for our 2023 Annual Meeting of Shareholders or will be
included in an amendment to this Annual Report on Form 10-K.

Item 11.  Executive Compensation

The  information  required  by  this  Item  regarding  executive  compensation  is  incorporated  into  this  section  by
reference to our Proxy Statement for our 2023 Annual Meeting of Shareholders or will be included in an amendment to this
Annual Report on Form 10-K.

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

The information required by this Item regarding security ownership of certain beneficial owners, management and
related  stockholder  matters,  our  equity  compensation  plans  and  securities  under  our  equity  compensation  plans,  is
incorporated into this section by reference to our Proxy Statement for our 2023 Annual Meeting of Shareholders or will be
included in an amendment to this Annual Report on Form 10-K.

Item 13.  Certain Relationships and Related Transactions, and Director Independence

The  information  required  by  this  Item  regarding  certain  relationships  and  related  transactions  and  director
independence  is  incorporated  into  this  section  by  reference  to  our  Proxy  Statement  for  our  2023  Annual  Meeting  of
Shareholders or will be included in an amendment to this Annual Report on Form 10-K.

Item 14.  Principal Accounting Fees and Services

The  information  required  by  this  Item  regarding  our  principal  accountant  fees  and  services  is  incorporated  into
this section by reference to our Proxy Statement for our 2023 Annual Meeting of Shareholders or will be included in an
amendment to this Annual Report on Form 10-K.

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Item 15.  Exhibits, Financial Statements Schedules

Exhibits, Financial Statements Schedules

Part IV

(a)

Financial Statements. The following consolidated financial statements of uniQure N.V. are filed as part
of this report:

Report of Independent Registered Public Accounting Firm – KPMG Accountants N.V.
Consolidated Balance Sheets as of December 31, 2022 and 2021
Consolidated Statements of Operations and Comprehensive Loss for the Years Ended December 31, 2022, 2021

and 2020

Consolidated Statements of Shareholders’ Equity for the Years Ended December 31, 2022, 2021 and 2020
Consolidated Statements of Cash Flows for the Years Ended December 31, 2022, 2021 and 2020
Notes to Consolidated Financial Statements for the Years Ended December 31, 2022, 2021 and 2020

Page

100
102

103
104
105
106

(b)

(c)

Financial  Statements  Schedules.  Financial  Statement  Schedules  have  been  omitted  because  of  the
absence of conditions under which they are required or because the required information, where material,
is shown in the financial statements or notes.

Other Exhibits.  The  Exhibit  Index  immediately  preceding  the  signature  page  of  this  Annual  Report  on
Form 10-K is incorporated herein by reference.

Item 16.  Form 10-K Summary

Not applicable.

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INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
FOR THE YEARS ENDED DECEMBER 31, 2022, 2021 AND 2020

Report of Independent Registered Public Accounting Firm - KPMG Accountants N.V., Amstelveen, The

Netherlands (PCAOB ID 1012)

Consolidated Balance Sheets as of December 31, 2022 and 2021
Consolidated Statements of Operations and Comprehensive Loss for the Years Ended December 31, 2022, 2021

and 2020

Consolidated Statements of Shareholders’ Equity for the Years Ended December 31, 2022, 2021 and 2020
Consolidated Statements of Cash Flows for the Years Ended December 31, 2022, 2021 and 2020
Notes to Consolidated Financial Statements

Page

100
102

103
104
105
106

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Report of Independent Registered Public Accounting Firm

To the Shareholders and Board of Directors
uniQure N.V.:

Opinions on the Consolidated Financial Statements and Internal Control Over Financial Reporting

We have audited the accompanying consolidated balance sheets of uniQure N.V. and subsidiaries (the Company) as

of December 31, 2022 and 2021, the related consolidated statements of operations and comprehensive loss, shareholders’
equity, and cash flows for each of the years in the three-year period ended December 31, 2022, and the related notes
(collectively, the consolidated financial statements). We also have audited the Company’s internal control over financial
reporting as of December 31, 2022, based on criteria established in Internal Control – Integrated Framework (2013) issued
by the Committee of Sponsoring Organizations of the Treadway Commission.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the
financial position of the Company as of December 31, 2022 and 2021, and the results of its operations and its cash flows
for  each  of  the  years  in  the  three  year-period  ended  December  31,  2022,  in  conformity  with  U.S.  generally  accepted
accounting principles. Also in our opinion, the Company maintained, in all material respects, effective internal control over
financial  reporting  as  of  December  31,  2022  based  on  criteria  established  in  Internal  Control  –  Integrated  Framework
(2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

Basis for Opinions

The Company’s management is responsible for these consolidated financial statements, for maintaining effective
internal  control  over  financial  reporting,  and  for  its  assessment  of  the  effectiveness  of  internal  control  over  financial
reporting, included in the accompanying Management’s Annual Report on Internal Control Over Financial Reporting. Our
responsibility  is  to  express  an  opinion  on  the  Company’s  consolidated  financial  statements  and  an  opinion  on  the
Company’s internal control over financial reporting based on our audits. We are a public accounting firm registered with
the  Public  Company  Accounting  Oversight  Board  (United  States)  (PCAOB)  and  are  required  to  be  independent  with
respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the
Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan
and  perform  the  audits  to  obtain  reasonable  assurance  about  whether  the  consolidated  financial  statements  are  free  of
material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was
maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material
misstatement  of  the  consolidated  financial  statements,  whether  due  to  error  or  fraud,  and  performing  procedures  that
respond  to  those  risks.  Such  procedures  included  examining,  on  a  test  basis,  evidence  regarding  the  amounts  and
disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and
significant  estimates  made  by  management,  as  well  as  evaluating  the  overall  presentation  of  the  consolidated  financial
statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control
over  financial  reporting,  assessing  the  risk  that  a  material  weakness  exists,  and  testing  and  evaluating  the  design  and
operating  effectiveness  of  internal  control  based  on  the  assessed  risk.  Our  audits  also  included  performing  such  other
procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our
opinions.

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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.

Critical Audit Matters

Critical audit matters 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  consolidated  financial  statements  and  (2)  involved  our  especially  challenging,  subjective,  or
complex judgments. We determined that there are no critical audit matters.

/s/ KPMG Accountants N.V.

We have served as the Company’s auditor since 2019.

Amstelveen, the Netherlands
February 27, 2023

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uniQure N.V.

CONSOLIDATED BALANCE SHEETS

December 31, 
2022

December 31, 
2021

(in thousands, except share and per share amounts)

Current assets
Cash and cash equivalents
Current investment securities
Accounts receivable and contract asset
Inventories
Prepaid expenses
Other current assets and receivables
Total current assets
Non-current assets
Property, plant and equipment, net
Non-current investment securities
Operating lease right-of-use assets
Intangible assets, net
Goodwill
Deferred tax assets, net
Other non-current assets
Total non-current assets
Total assets
Current liabilities
Accounts payable
Accrued expenses and other current liabilities
Current portion of contingent consideration
Current portion of operating lease liabilities
Total current liabilities
Non-current liabilities
Long-term debt
Operating lease liabilities, net of current portion
Contingent consideration, net of current portion
Deferred tax liability, net
Other non-current liabilities
Total non-current liabilities
Total liabilities
Commitments and contingencies
Shareholders' equity
Ordinary shares, €0.05 par value: 80,000,000 shares authorized as of
December 31, 2022 and December 31, 2021 and 46,968,032 and
46,298,635 ordinary shares issued and outstanding as of
December 31, 2022 and December 31, 2021, respectively
Additional paid-in-capital
Accumulated other comprehensive loss
Accumulated deficit
Total shareholders' equity
Total liabilities and shareholders' equity

$

$

$

$

$

$

$

228,012
124,831
102,376
6,924
11,817
2,814
476,774

50,532
39,984
32,726
58,778
25,581
14,528
6,061
228,190
704,964

10,984
30,571
25,982
8,382
75,919

102,791
31,719
9,334
8,257
935
153,036
228,955

556,256
—
58,768
-
10,540
2,675
628,239

43,505
—
25,573
62,686
27,633
15,647
5,897
180,941
809,180

2,502
28,487
—
5,774
36,763

100,963
28,987
29,542
12,913
4,236
176,641
213,404

2,838
1,113,393
(58,291)
(581,931)
476,009
704,964

$

2,802
1,076,972
(28,856)
(455,142)
595,776
809,180

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

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CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS

uniQure N.V.

License revenues
License revenues from related parties
Contract manufacturing revenues
Collaboration revenues
Collaboration revenues from related parties
Total revenues
Operating expenses:
Cost of license revenues
Cost of contract manufacturing revenues
Research and development expenses
Selling, general and administrative expenses
Total operating expenses
Other income
Other expense
(Loss) / income from operations
Interest income
Interest expense
Foreign currency gains / (losses), net
Other non-operating gains / (losses), net
(Loss) / income before income tax benefit / (expense)
Income tax benefit / (expense)
Net (loss) / income
Other comprehensive loss:
Foreign currency translation adjustments
Total comprehensive (loss) / gain
Earnings per ordinary share - basic
Basic net (loss) / income per ordinary share
Earnings per ordinary share - diluted
Diluted net (loss) / income per ordinary share
Weighted average shares - basic
Weighted average shares - diluted

$

$

$

$

$

$

$

2022

2020

517,400 $

Year ended December 31, 
2021
(in thousands, except share and per share amounts)
4,352
32,967
—
59
136
37,514

100,000
—
1,717
4,766
—
106,483

—
—
6,602
—
524,002

(1,254)
(2,089)
(197,591)
(55,059)
(255,993)
7,171
(820)
(143,159)
609
(11,704)
23,235
2,760
(128,259) $
1,470
(126,789) $

(24,976)
—
(143,548)
(56,290)
(224,814)
12,306
(876)
310,618
162
(7,474)
29,660
(160)
332,806 $
(3,217)
329,589 $

—
—
(122,400)
(42,580)
(164,980)
3,342
(1,302)
(125,426)
938
(3,825)
(13,613)
483
(141,443)
16,419
(125,024)

(29,435)
(156,224) $

(38,763)
290,826 $

16,596
(108,428)

(2.71) $

7.17 $

(2.81)

(2.71) $

7.04 $

46,735,045
46,735,045

45,986,467
46,840,972

(2.81)
44,466,365
44,466,365

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

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uniQure N.V.

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

Ordinary shares

Additional
paid-in

Accumulated
other

comprehensive Accumulated 

No. of shares        Amount             capital            income / (loss)     

deficit

Total
shareholders’
equity

Balance at December 31, 2019
Loss for the period
Other comprehensive income
Exercises of share options
Restricted and performance share units
distributed during the period
Share-based compensation expense
Issuance of ordinary shares relating to
employee stock purchase plan
Balance at December 31, 2020
Income for the period
Other comprehensive loss
Issuance of ordinary shares
Income tax benefit of past share issuance
cost
Exercises of share options
Restricted and performance share units
distributed during the period
Share-based compensation expense
Issuance of ordinary shares relating to
employee stock purchase plan
Balance at December 31, 2021
Loss for the period
Other comprehensive loss
Income tax benefit of past share issuance
cost
Exercise of share options
Restricted and performance share units
distributed during the period
Share-based compensation expense
Issuance of ordinary shares relating to
employee stock purchase plan
Balance at December 31, 2022

(in thousands, except share and per share amounts)
$

$

43,711,954
—
—
498,678

$ 2,651
—
—
29

986,803
—
—
7,169

(6,689) $ (659,707) $ 323,058
(125,024)
(125,024)
16,596
—
7,198
—

—
16,596
—

560,986
—

31
—

(31)
21,831

6,181
44,777,799
—
—
921,730

—
$ 2,711
—
—
55

246
$ 1,016,018
—
—
29,509

—
241,496

352,886
—

—
15

21
—

3,047
2,638

(21)
25,635

4,724
46,298,635
—
—

—
$ 2,802
—
—

146
$ 1,076,972
—
—

$

$

—
—

—
9,907
—
(38,763)
—

—
—

—
—

—
—

—
21,831

—

246
$ (784,731) $ 243,905
329,589
(38,763)
29,564

329,589
—
—

—
—

—
—

3,047
2,653

—
25,635

—

—

146
(28,856) $ (455,142) $ 595,776
(126,789)
(126,789)
(29,435)
—

—
(29,435)

—
152,356

505,799
—

—
8

27
—

808
1,272

(27)
34,204

—
—

—
—

—
—

—
—

808
1,280

—
34,204

11,242
46,968,032

1
$ 2,838

164
$ 1,113,393

$

165
(58,291) $ (581,931) $ 476,009

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

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uniQure N.V.

CONSOLIDATED STATEMENTS OF CASH FLOWS

Cash flows from operating activities
Net (loss) / income
Adjustments to reconcile net (loss) / income to net cash (used in) / generated
from operating activities:

Depreciation and amortization expense
Share-based compensation expense
Deferred tax (income) / expense
Changes in fair value of contingent consideration and derivative financial
instrument, net
Unrealized foreign exchange (gains) / losses, net
Change in deferred revenue
Other non-cash items, net

Changes in operating assets and liabilities:

Accounts receivable, prepaid expenses, and other current assets and
receivables
Contract asset related to CSL Behring milestone payments
Inventories
Accounts payable
Accrued expenses, other liabilities, and operating leases

Net cash (used in) / generated from operating activities
Cash flows from investing activities
Investment in investment securities
Purchases of property, plant, and equipment
Acquisition of Corlieve, net of cash acquired
Purchases of intangible assets
Net cash used in investing activities
Cash flows from financing activities
Proceeds from issuance of ordinary shares related to employee stock option
and purchase plans
Proceeds from loan increment, net of debt issuance costs
Proceeds from issuance of ordinary shares
Share issuance costs from issuance of ordinary shares
Repayment of debt acquired through acquisition of Corlieve
Net cash generated from financing activities
Currency effect on cash, cash equivalents and restricted cash
Net (decrease) / increase in cash, cash equivalents and restricted cash
Cash, cash equivalents and restricted cash at beginning of period
Cash, cash equivalents and restricted cash at the end of period
Cash and cash equivalents
Restricted cash related to leasehold and other deposits
Total cash, cash equivalents and restricted cash
Supplemental cash flow disclosures:
Cash paid for interest
Non-cash (decrease) / increase in accounts payables and accrued expenses
and other current liabilities related to purchases of property, plant, and
equipment

2022

Year ended December 31, 
2021
(in thousands)

2020

$ (126,789)

$ 329,589

$ (125,024)

8,537
34,204
(1,470)

4,320
(22,083)
-
1,605

(4,083)
(45,000)
(6,924)
9,238
3,385
(145,060)

(163,146)
(17,688)
(1,900)
-
(182,734)

7,299
25,635
3,210

6,843
(31,335)
-
(2,800)

(3,959)
(55,000)
-
(727)
9,204
287,959

-
(17,438)
(49,949)
-
(67,387)

10,648
21,831
(16,419)

(483)
14,730
(33,642)
-

(6,967)
-
-
(2,701)
3,199
(134,828)

-
(7,271)
-
(2,213)
(9,484)

1,445
-
-
-
-
1,445
(1,831)
(328,180)
559,353
$ 231,173
$ 228,012
3,161
$ 231,173

2,798
64,067
30,899
(1,334)
(1,572)
94,858
(3,757)
311,673
247,680
$ 559,353
$ 556,256
3,097
$ 559,353

$

$

(9,247)

$ (6,539)

(964)

$

1,488

7,444
-
-
-
-
7,444
3,822
(133,046)
380,726
$ 247,680
$ 244,932
2,748
$ 247,680

$

$

(4,131)

630

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

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uniQure N.V.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1.

General business information

uniQure  (the  “Company”)  was  incorporated  on  January  9,  2012  as  a  private  company  with  limited  liability
(besloten vennootschap met beperkte aansprakelijkheid) under the laws of the Netherlands. The Company is a leader in the
field of gene therapy and seeks to deliver to patients suffering from rare and other devastating diseases single treatments
with  potentially  curative  results.  The  Company’s  business  was  founded  in  1998  and  was  initially  operated  through  its
predecessor company, Amsterdam Molecular Therapeutics Holding N.V (“AMT”). In 2012, AMT undertook a corporate
reorganization, pursuant to which uniQure B.V. acquired the entire business and assets of AMT and completed a share-for-
share exchange with the shareholders of AMT. Effective February 10, 2014, in connection with its initial public offering,
the Company converted into a public company with limited liability (naamloze vennootschap) and changed its legal name
from uniQure B.V. to uniQure N.V.

The Company is registered in the trade register of the Dutch Chamber of Commerce (Kamer van Koophandel) in
Amsterdam, the Netherlands under number 54385229. The Company’s headquarters are in Amsterdam, the Netherlands,
and its registered office is located at Paasheuvelweg 25, Amsterdam 1105 BP, the Netherlands and its telephone number is
+31 20 240 6000. The Company’s website address is www.uniqure.com.

The  Company’s  ordinary  shares  are  listed  on  the  Nasdaq  Global  Select  Market  and  trade  under  the  symbol

“QURE.”

2.

Summary of significant accounting policies

2.1         Basis of preparation

The  Company  prepared  its  consolidated  financial  statements  in  compliance  with  generally  accepted  accounting
principles  in  the  United  States  (“U.S.  GAAP”).  Any  reference  in  these  notes  to  applicable  guidance  is  meant  to  refer  to
authoritative U.S. GAAP as found in the Accounting Standards Codification (“ASC”) and Accounting Standards Update
(“ASU”) of the Financial Accounting Standards Board (“FASB”).

The  consolidated  financial  statements  have  been  prepared  under  the  historical  cost  convention,  except  for

derivative financial instruments and contingent consideration, which are recorded at fair value through profit or loss.

The consolidated financial statements are presented in United States (“U.S.”) dollars ($), except where otherwise
indicated. Transactions denominated in currencies other than U.S. dollars are presented in the transaction currency with the
U.S. dollar amount included in parenthesis, converted at the foreign exchange rate as of the transaction date.

The  consolidated  financial  statements  presented  have  been  prepared  on  a  going  concern  basis  based  on  the
Company’s  cash  and  cash  equivalents  as  of  December  31,  2022  and  the  Company’s  budgeted  cash  flows  for  the  twelve
months following the issuance date.

2.2         Use of estimates

The preparation of consolidated financial statements, in conformity with U.S. GAAP and Securities and Exchange
Commission  (“SEC”)  rules  and  regulations,  requires  management  to  make  estimates  and  assumptions  that  affect  the
reported  amounts  of  assets  and  liabilities,  disclosure  of  contingent  assets  and  liabilities  at  the  date  of  the  consolidated
financial  statements  and  reported  amounts  of  revenues  and  expenses  during  the  reporting  period.  Estimates  and
assumptions are primarily made in relation to contingent consideration related to the acquisition of Corlieve Therapeutics
SAS (“Corlieve”), the treatment of revenue to be recognized under the commercialization and license agreement entered
into (“CSL Behring Agreement”) between the Company and CSL Behring LLC (“CSL Behring”), and the assessment of a
valuation allowance on the Company’s deferred tax assets in the Netherlands and the U.S. If actual results differ from the
Company’s estimates, or to the extent these estimates are adjusted in future periods, the Company’s results of operations
could either benefit from, or be adversely affected by, any such change in estimate.

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2.3         Accounting policies

The principal accounting policies applied in the preparation of these consolidated financial statements are set out

below. These policies have been consistently applied to all the years presented, unless otherwise stated.

2.3.1      Consolidation

The  consolidated  financial  statements  comprise  the  financial  statements  of  the  Company  and  its  subsidiaries.
Subsidiaries are all entities over which the Company has a controlling financial interest either through variable interest or
through voting interest. Currently, the Company has no involvement with variable interest entities.

Inter-company  transactions,  balances,  income,  and  expenses  on  transactions  between  uniQure  entities  are
eliminated in consolidation. Profits and losses resulting from inter-company transactions that are recognized in assets are
also  eliminated.  Accounting  policies  of  subsidiaries  have  been  changed  where  necessary  to  ensure  consistency  with  the
policies adopted by the Company.

2.3.2      Current versus non-current classification

The Company presents assets and liabilities in the consolidated balance sheets based on current and non-current

classification.

The term current assets is used to designate cash and other assets, or resources commonly identified as those that
are reasonably expected to be realized in cash or sold or consumed during the normal operating cycle of the business. The
Company’s normal operating cycle is twelve months. All other assets are classified as non-current.

The term current liabilities is used principally to designate obligations whose liquidation is reasonably expected to
require  the  use  of  existing  resources  properly  classifiable  as  current  assets,  or  the  creation  of  other  current  liabilities.
Current liabilities are expected to be settled in the normal operating cycle. The Company classifies all other liabilities as
non-current.

Deferred tax assets and liabilities are classified as non-current assets and liabilities, if any.

2.3.3      Foreign currency translation

The functional currency of the Company and each of its entities (except for uniQure Inc. and Corlieve AG) is the
euro (€). This represents the currency of the primary economic environment in which the entities operate. The functional
currency of uniQure Inc. is the U.S. dollar ($) and the functional currency of Corlieve AG is the Swiss Franc (CHF). The
consolidated financial statements are presented in U.S. dollars.

Foreign  currency  transactions  are  measured  and  recorded  in  the  functional  currency  using  the  exchange  rates
prevailing  at  the  dates  of  the  transactions.  Foreign  exchange  gains  and  losses  resulting  from  the  settlement  of  such
transactions and from the re-measurement of monetary assets and liabilities denominated in foreign currencies at exchange
rates prevailing at balance sheet date are recognized in profit and loss.

Upon consolidation, the assets and liabilities of foreign operations are translated into the functional currency of
the  shareholding  entity  at  the  exchange  rates  prevailing  at  the  balance  sheet  date;  items  of  income  and  expense  are
translated  at  monthly  average  exchange  rates.  The  consolidated  assets  and  liabilities  are  translated  from  uniQure  N.V.’s
functional currency, euro, into the reporting currency U.S. dollar at the exchange rates prevailing at the balance sheet date;
items of income and expense are translated at monthly average exchange rates. Issued capital and additional paid-in capital
are translated at historical rates with differences to the balance sheet date rate recorded as translation adjustments in other
comprehensive  income  /  loss.  The  exchange  differences  arising  on  translation  for  consolidation  are  recognized  in
“accumulated  other  comprehensive  income  /  loss”.  On  disposal  of  a  foreign  operation,  the  component  of  other
comprehensive income / loss relating to that foreign operation is recognized in profit or loss.

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2.3.4      Fair value measurement

The Company measures certain assets and liabilities at fair value, either upon initial recognition or for subsequent
accounting or reporting. ASC 820, Fair Value Measurements and Disclosures requires disclosure of methodologies used in
determining the reported fair values and establishes a hierarchy of inputs used when available. The three levels of the fair
value hierarchy are described below:

● Level 1 - Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that

the Company can access at the measurement date.

● Level 2 - Valuations based on quoted prices for similar assets or liabilities in markets that are not active or

models for which the inputs are observable, either directly or indirectly.

● Level 3 - Valuations that require inputs that reflect the Company’s own assumptions that are both significant

to the fair value measurement and are unobservable.

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 as 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 financial instruments and contingent consideration (Note
7, “Fair value measurement”). The carrying amount of cash and cash equivalents, accounts receivable from collaborators,
prepaid expenses, other assets, accounts payable, accrued expenses and other current liabilities reflected in the consolidated
balance sheets approximate their fair values due to their short-term maturities.

2.3.5      Corlieve transaction

On June 21, 2021, we entered into a share and purchase agreement (“SPA”) to acquire all of outstanding ordinary
shares  of  Corlieve,  a  privately  held  French  gene  therapy  company  (“Corlieve  Transaction”).  On  July  30,  2021
(“Acquisition Date”), the Company acquired Corlieve. The Company evaluated the Corlieve transaction as to whether or
not  the  transaction  should  be  accounted  for  as  a  business  combination  or  asset  acquisition.  Refer  to  Note  3  “Corlieve
transaction” for further detail.

a. Goodwill

Goodwill  represents  the  excess  of  the  fair  value  of  the  consideration  transferred  over  the  fair  value  of  the  net
assets assumed in a business combination. Goodwill is not amortized but is evaluated for impairment on an annual basis
and between annual tests if we become aware of any events occurring or changes in circumstances that would more likely
than  not  reduce  the  fair  value  of  the  reporting  unit  below  its  carrying  amount.  As  of  December  31,  2022  and  2021,  the
Company has not recognized any impairment charges related to goodwill.

Refer to Note 3 “Corlieve transaction” for further detail.

b. Acquired research and development

The Company identified various licenses that combined with the results of the research and development activities
conducted in relation to its target candidate for the treatment of temporal lobe epilepsy (“AMT-260”) since incorporation of
Corlieve  in  2019  constitute  an  In-process  research  and  development  intangible  asset  (“IPR&D  Intangible  Asset”).  The
IPR&D Intangible Asset is considered to be indefinite-lived until the completion or abandonment of the associated research
and  development  efforts  and  is  not  amortized.  If  and  when  development  is  completed,  which  generally  occurs  when
regulatory approval to market a product is obtained, the associated asset would be deemed finite-lived and would then be
amortized based on its respective useful life at that point in time. As of December 31, 2022 and 2021, the Company has not
recognized any impairment charges related to the IPR&D Intangible Asset.

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In case of abandonment, the IPR&D Intangible Asset will be written-off. In accordance with ASC 350, Intangibles
– Goodwill and Other, the Company tests indefinite-lived intangible assets for impairment on an annual basis and between
annual tests if the Company becomes aware of any events occurring or changes in circumstances that would indicate the
fair value of the IPR&D Intangible Asset is below its carrying amount.

Refer to Note 3 “Corlieve transaction” for further detail.

c. Contingent consideration

Each  reporting  period,  the  Company  revalues  the  contingent  consideration  obligations  associated  with  the
Corlieve  transaction  to  their  fair  value  and  records  changes  in  the  fair  value  within  research  and  development  expenses.
Changes  in  contingent  consideration  result  from  changes  in  assumptions  regarding  the  probabilities  of  achieving  the
relevant milestones, or probability of success (“POS”), the estimated timing of achieving such milestones, and the interest
rate to discount the payments. Payments made soon after the acquisition date are recorded as cash flows from financing
activities, and payments, or the portion of the payments, not made soon after the acquisition date are recorded as cash flows
from operating activities.

Refer to Note 3 “Corlieve transaction” for further detail.

2.3.6      Notes to the consolidated statements of cash flows

The consolidated statements of cash flows have been prepared using the indirect method. The cash disclosed in
the  consolidated  statements  of  cash  flows  is  comprised  of  cash  and  cash  equivalents.  Cash  and  cash  equivalents  include
bank balances, demand deposits and other short-term highly liquid investments (with maturities of less than three months at
the time of purchase) that are readily convertible into a known amount of cash and are subject to an insignificant risk of
fluctuation in value.

Cash  flows  denominated  in  foreign  currencies  have  been  translated  at  the  average  exchange  rates.  Exchange
differences, if any, affecting cash and cash equivalents are shown separately in the consolidated statements of cash flows.
Interest paid and received, and income taxes are included in net cash (used in) provided by operating activities.

2.3.7      Segment information

Operating  segments  are  identified  as  a  component  of  an  enterprise  for  which  separate  discrete  financial
information  is  available  for  evaluation  by  the  chief  operating  decision  maker,  or  decision-making  group,  in  making
decisions  on  how  to  allocate  resources  and  assess  performance.  The  Company  views  its  operations  and  manages  its
business  as  one  operating  segment,  which  comprises  the  discovery,  development,  and  commercialization  of  innovative
gene therapies.

2.3.8      Net (loss) / income per share

The Company follows the provisions of ASC 260, Earnings Per Share. In accordance with these provisions, net
(loss) / income per share is calculated by dividing net (loss) / income by the weighted average number of ordinary shares
outstanding during the period.

Diluted net (loss) / income per share reflects the dilution that would occur if share options or warrants to issue
ordinary shares were exercised, performance or restricted share units were distributed, or shares under the employee share
purchase plan were issued. However, potential ordinary shares are excluded if their effect is anti-dilutive.

Refer to Note 18 “Basic and diluted earnings per share” for further information.

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2.3.9      Impairment of long-lived assets

Long-lived  assets,  which  include  property,  plant,  and  equipment  and  finite-lived  intangible  assets,  are  reviewed
for impairment whenever events or changes in circumstances indicate that the carrying value of an asset or asset group may
not be recoverable. Right-of-use assets are also reviewed for impairment in accordance with ASC 360, Property, Plant, and
Equipment. The recoverability of the carrying value of an asset or asset group depends on the successful execution of the
Company’s business initiatives and its ability to earn sufficient returns on approved products and product candidates. When
such events or changes in circumstances occur, the Company assesses recoverability by determining whether the carrying
value of such assets will be recovered through the undiscounted expected future cash flows. If the future undiscounted cash
flows are less than the carrying amount of these assets, the Company recognizes an impairment loss based on the excess of
the carrying value over the fair value of the assets. Fair value is determined through various valuation techniques, including
discounted cash flow models, quoted market values, and third-party independent appraisals, as considered necessary.

Refer to Note 2.3.5 “Corlieve transaction” for information on impairment testing related to goodwill and acquired

research and development intangible assets.

2.3.10    Investment securities

Investment  securities  consist  of  sovereign  debt  with  residual  maturities  of  less  than  12  months  (presented  as
current)  and  beyond  (presented  as  non-current).  The  Company  classifies  these  securities  as  held-to-maturity.  Held-to-
maturity securities are those securities in which the Company has the ability and intent to hold the security until maturity.
Held-to-maturity  securities  are  recorded  at  amortized  cost,  adjusted  for  the  amortization  or  accretion  of  premiums  or
discounts. Premiums and discounts are amortized or accreted over the term of the related held-to-maturity security as an
adjustment to yield using the effective interest rate method.

Investments securities with original maturities of less than three months when purchased are presented within cash

and cash equivalents (December 13, 2022: $21.2 million, December 31, 2021: nil).

A decline in the market value of any investment security below cost that is deemed to be other than temporary
results in a reduction in the carrying amount to fair value. The impairment is charged to operations and a new cost base for
the security is established. Other-than-temporary impairment charges are included in interest and other income (expense),
net. Interest income is recognized when earned.

Refer to Note 5 “Investment securities” for further information.

2.3.11    Accounts receivable

Accounts receivables include amounts due from services provided to the Company’s licensing and collaboration

partners as well as unconditional rights to consideration from its licensing and collaboration partners.

2.3.12    Inventories

The Company started producing commercial materials in April 2022 to supply CSL Behring with the Product in
accordance with the June 2020 Development and Commercial Supply Agreement between the Company and CSL Behring.
From this date onwards, the Company presents the costs associated with the aforementioned activities as cost of contract
manufacturing. Refer to Note 4, “Collaboration arrangements and concentration of credit risk” for further detail.

Per  ASC  330,  Inventory,  inventory  is  stated  at  the  lower  of  cost  or  estimated  net  realizable  value,  on  a  first-in,
first-out basis. The Company capitalizes raw materials to the extent these can be used in the manufacturing of the Product.
The  Company  uses  standard  costs,  approximating  average  costs  to  determine  its  cost  basis  for  work  in  progress  and
finished goods. The Company’s assessment of recoverability value requires the use of estimates regarding the net realizable
value  of  its  inventory  balances,  including  an  assessment  of  excess  or  obsolete  inventory.  As  applicable,  write-downs
resulting from adjustments to net realizable value will be recorded to cost of contract manufacturing.

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2.3.13    Prepaid expenses

Prepaid  expenses  are  amounts  paid  in  the  period,  for  which  the  benefit  has  not  been  realized,  and  include
payments made for insurance and research and clinical contracts. The related expense will be recognized in the subsequent
period as incurred.

2.3.14 Other (non) current assets

Deposits paid are either presented as other current assets or as other non-current assets based on duration of the

underlying contractual arrangement. Deposits are classified as restricted cash and primarily relate to facility leases.

Contract  assets  are  presented  in  current  assets  or  as  non-current  assets  based  on  the  timing  of  the  right  to

consideration.

2.3.15    Property, plant, and equipment

Property,  plant,  and  equipment  is  comprised  mainly  of  laboratory  equipment,  leasehold  improvements,
construction-in-progress (“CIP”) and office equipment. All property, plant and equipment is stated at cost less accumulated
depreciation.  CIP  consists  of  capitalized  expenses  associated  with  construction  of  assets  not  yet  placed  into  service.
Depreciation commences on CIP once the asset is placed into service based on its useful life determined at that time.

Maintenance and repairs that do not improve or extend the lives of the respective assets are expensed as incurred.
Upon disposal, the related cost and accumulated depreciation is removed from the accounts and any resulting gain or loss
on the transaction is recognized in the consolidated statements of operations and comprehensive loss.

Depreciation  is  calculated  using  the  straight-line  method  over  the  estimated  useful  lives  of  the  assets  (or  in  the

case of leasehold improvements a shorter lease term), which are as follows:

·    Leasehold improvements
·    Laboratory equipment
·    Office equipment

    Between 10 – 15 years

5 years
Between 3 – 5 years

2.3.16    Leases

The Company records leases in accordance with ASC 842, Leases and determines if an arrangement is a lease at
inception.  Operating  lease  right-of-use  assets  and  lease  liabilities  are  initially  recognized  based  on  the  present  value  of
future minimum lease payments over the lease term at commencement date calculated using an incremental borrowing rate
applicable  to  the  lease  asset,  unless  the  implicit  rate  is  readily  available.  Lease  terms  may  include  options  to  extend  or
terminate the lease when it is reasonably certain that the Company will exercise that option. Leases with a term of twelve
months or less are not recognized on the consolidated balance sheets.

 The Company recognizes lease cost on a straight-line basis and presents these costs as operating expenses within
the  Consolidated  statements  of  operations  and  comprehensive  loss.  The  Company  presents  lease  payments  within  cash
flows from operations within the Consolidated statements of cash flows.

2.3.17    Accounts payable and accrued expenses

Accounts  payables  are  invoiced  amounts  related  to  obligations  to  pay  for  goods  or  services  that  have  been
acquired in the ordinary course of business from suppliers. Accounts payables are recognized at the amounts invoiced by
suppliers.

Accrued expenses are recognized for goods or services that have been acquired in the ordinary course of business.

Contract liabilities, if any, are presented in accrued expenses.

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2.3.18    Long-term debt

Long-term debt is initially recognized at cost and presented net of original issue discount or premium and debt
issuance costs on the consolidated balance sheets. Amortization of debt discount and debt issuance costs is recognized as
interest expense in profit and loss over the period of the debt, using the effective interest rate method.

2.3.19    Pensions and other post-retirement benefit plans

The  Company  has  a  defined  contribution  pension  plan  for  all  employees  at  its  Amsterdam  facility  in  the
Netherlands, which is funded by the Company through payments to an insurance company, with individual accounts for
each participants’ assets. The Company has no legal or constructive obligation to pay further contributions if the plan does
not hold sufficient assets to pay all employees the benefits relating to services rendered in the current and prior periods.
The contributions are expensed as incurred. Prepaid contributions are recognized as an asset to the extent that a cash refund
or a reduction in the future payments is available.

In 2016, the Company adopted a qualified 401(k) Plan for all employees located in the United States. The 401(k)
Plan  offers  both  a  pre-tax  and  post-tax  (Roth)  component.  Employees  may  contribute  up  to  the  IRS  statutory  limit  each
calendar  year.  The  Company  matches  $0.50  for  every  $1.00  contributed  to  the  plan  by  participants  up  to  6%  of  base
compensation. Employer contributions are recognized as they are contributed, as long as the employee is rendering services
in that period. If employer contributions are made in periods after an individual retires or terminates, the estimated cost is
accrued during the employee’s service period.

2.3.20    Share-based compensation

The  Company  accounts  for  its  share-based  compensation  awards  in  accordance  with  ASC  718,  Compensation-

Stock Compensation.

All  the  Company’s  share-based  compensation  plans  for  employees  are  equity-classified.  ASC  718  requires  all
share-based  compensation  to  employees,  including  grants  of  employee  options,  restricted  share  units,  performance  share
units  and  modifications  to  existing  instruments,  to  be  recognized  in  the  consolidated  statements  of  operations  and
comprehensive  loss  based  on  their  grant-date  fair  values,  net  of  an  estimated  forfeiture  rate,  over  the  requisite  service
period. Forfeitures of employee options are recognized as they occur. Compensation expense related to Performance Share
Units is recognized when the Company considers achievement of the milestones to be probable. The requirements of ASC
718 are also applied to nonemployee share-based payment transactions except for specific guidance on certain inputs to an
option-pricing model and the attribution of cost.

The Company uses a Hull & White option model to determine the fair value of option awards. The model captures
early exercises by assuming that the likelihood of exercises will increase when the share-price reaches defined multiples of
the strike price. This analysis is performed over the full contractual term.

2.3.21    Revenue recognition

The Company primarily generates revenue from its commercialization and license agreement with CSL Behring
and its collaboration, research, and license agreements with BMS for the development and commercialization of product
candidates.

CSL Behring collaboration

On  June  24,  2020  (“Signing  Date”),  the  Company  entered  into  a  commercialization  and  license  agreement
pursuant to which CSL Behring received exclusive global rights to etranacogene dezaparvovec (“Product”). The Company
concluded  that  CSL  Behring  is  a  customer  in  accordance  with  ASC  606,  Revenue  from  Contracts  with  Customers  and
identified two material performance obligations related to the CSL Behring Agreement:

(i) Sale  of  the  exclusive  global  rights  to  etranacogene  dezaparvovec,  our  investigational  gene  therapy  for

patients with hemophilia B (the “Product”) (“License Sale”); and

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(ii) Generate  information  to  support  the  regulatory  approval  of  the  current  and  next  generation  manufacturing
process  of  the  Product  and  to  provide  any  such  information  generated  to  CSL  Behring  (“Manufacturing
Development”).

These  performance  obligations  are  considered  distinct  from  one  another,  as  CSL  Behring  can  benefit  from  the
identified service either on its own or together with other resources that are readily available to CSL Behring, and as the
performance obligations are separately identifiable from other performance obligations in the CSL Behring Agreement.

Refer to Note 4 “Collaboration arrangements and concentration of credit risk” for further detail.

Bristol-Myers Squib collaboration

The  Company  initially  entered  into  collaboration,  research,  and  license  agreements  with  Bristol-Myers  Squibb
(“BMS”)  in  2015  (“BMS  CLA”)  and  amended  them  in  2020  (“amended  BMS  CLA”).  The  agreement  terminated  on
February 21, 2023 (“Termination Date”).

The Company evaluated the initial BMS CLA and determined that its performance obligations were as follows as

of the amended BMS CLA:

● Providing pre-clinical research activities (“Collaboration Revenue”);

● Providing clinical and commercial manufacturing services for products (“Manufacturing Revenue”); and

● Providing access to its technology and know-how in the field of gene therapy as well as actively contributing
to  the  target  selection,  the  collaboration  as  a  whole,  the  development  during  the  target  selection,  the  pre-
clinical and the clinical phase through participating in joint steering committee and other governing bodies
(“License Revenue”).

As further discussed in Note 4, “Collaboration arrangements and concentration of credit risk”, as a result of the
December 2020 amended BMS CLA, the Company’s performance obligation related to License Revenues was materially
completed as of the date of the amendment effective date of December 1, 2020.

License Revenue

Until  the  December  2020  amendment  of  the  BMS  CLA  the  Company  recognized  License  Revenue  over  the
expected  performance  period  based  on  its  measure  of  progress  towards  the  completion  of  certain  activities  related  to  its
services.  Following  the  December  2020  amendment  of  the  BMS  CLA  the  Company’s  performance  was  materially
completed and it had satisfied its performance obligation (see Note 4, “Collaboration arrangements and concentration of
credit risk”, for a detailed discussion).

Collaboration and Manufacturing Revenue

The Company recognized Collaboration Revenue associated with optional work orders it received from BMS to
provide analytical development and process development activities that were reimbursable by BMS in accordance with the
BMS CLA as well as the amended BMS CLA.

2.3.22    Other income, other expense

The  Company  receives  certain  government  and  regional  grants,  which  support  its  research  efforts  in  defined
projects,  and  include  contributions  towards  the  cost  of  research  and  development.  These  grants  generally  provide  for
reimbursement  of  approved  costs  incurred  as  defined  in  the  respective  grants  and  are  deferred  and  recognized  in  the
statements of operations and comprehensive loss over the period necessary to match them with the costs they are intended
to  compensate,  when  it  is  probable  that  the  Company  has  complied  with  any  conditions  attached  to  the  grant  and  will
receive the reimbursement.

The  Company’s  other  income  also  consists  of  employee  retention  credits  received  under  the  U.S.  Coronavirus
Aid,  Relief,  and  Economic  Security  Act,  income  related  to  a  settlement  agreement  that  the  Company  and  VectorY  B.V.
entered into in April 2021, as well as income from subleasing part of the Company’s Amsterdam facility. Other expense
consists of expenses incurred in relation to the subleasing income.

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2.3.23    Research and development expenses

Research and development costs are expensed as incurred. Research and development expenses generally consist
of  laboratory  research,  clinical  trials,  statistical  analysis,  and  report  writing,  regulatory  compliance  costs  incurred  with
clinical research organizations and other third-party vendors (including post-approval commitments to conduct consistency
and comparability studies). In addition, research and development expenses consist of start-up and validation costs related
to  the  Company’s  Lexington  facility  and  the  development  and  improvement  of  the  Company’s  manufacturing  processes
and  methods.  Furthermore,  research  and  development  costs  include  costs  of  materials  and  costs  of  intangible  assets
purchased  from  others  for  use  in  research  and  development  activities.  The  costs  of  intangibles  that  are  purchased  from
others  for  a  particular  research  and  development  project  and  that  have  no  alternative  future  uses  (in  other  research  and
development projects or otherwise) are expensed as research and development costs at the time the costs are incurred or at
the time when no alternative future use is identified.

2.3.24    Income taxes

Income taxes are recorded in accordance with ASC 740, Income Taxes, which provides for deferred taxes using an
asset  and  liability  approach.  The  Company  recognizes  deferred  tax  assets  and  liabilities  for  the  expected  future  tax
consequences of events that have been included in the financial statements or tax returns. Deferred tax assets and liabilities
are determined based on the difference between the financial statement carrying amount and the tax bases of assets and
liabilities  using  enacted  tax  rates  in  effect  for  the  year  in  which  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  the
deferred tax assets will not be realized.

The benefits of tax positions are recognized only if those positions are more likely than not, based on the technical
merits, to be sustained upon examination. Recognized tax positions are measured at the largest amount of tax benefit that is
greater than 50 percent likely of being realized upon settlement. 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, 2022, and 2021, the Company did not have any significant unrecognized tax
benefits.

2.3.25 Recently Adopted Accounting Pronouncements

ASU 2021-10: Government Assistance

In  November  2018,  the  FASB  issued  ASU  2021-10,  Government  Assistance  (Topic  832)  which  discussed  the
requirements for disclosures, to be applied prospectively or retrospectively, related to transactions with a government. ASU
2021-10  is  effective  for  fiscal  years  beginning  after  December  15,  2021.  The  new  disclosure  requirements  required
disclosures around 1) information about the nature of the transactions and the related accounting policy used to account for
the transactions, 2) the line items on the balance sheet and income statement that are affected by the transactions, and the
amounts  applicable  to  each  financial  statement  line  item,  and  3)  significant  terms  and  conditions  of  the  transactions,
including  commitments  and  contingencies.  The  Company  currently  includes  information  on  government  grants  and  the
adoption  of  ASU  2021-10  on  January  1,  2022  has  not  had  a  material  impact  on  the  Company’s  consolidated  financial
statements.

Recent Accounting Pronouncements Not Yet Effective

None.

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3.

Corlieve transaction

At  the  Acquisition  Date,  the  Company  acquired  Corlieve.  Following  Corlieve’s  formation  in  November  2019,
Corlieve obtained exclusive licenses to certain patents from two French research institutions that continue to collaborate
with the Company. Corlieve also obtained an exclusive license from Regenxbio Inc. (“Regenxbio”) to use AAV9 to deliver
any  sequence  that  affects  the  expression  of  the  Glutamate  inotropic  receptor  kainate  type  subunit  2  (“GRIK2”)  gene
sequence  in  humans.  Corlieve  and  Regenxbio  simultaneously  entered  into  a  collaboration  plan  related  to  agreed  joint
preclinical  research  and  development  activities.  At  the  Acquisition  Date,  Corlieve  and  its  Swiss  subsidiary,  Corlieve
Therapeutics AG, employed seven employees. Corlieve’s result for the full year 2021 was a $7.3 million loss of which $4.1
million was included in the Company’s consolidated results.

The Company evaluated the Corlieve transaction as to whether or not the transaction should be accounted for as a
business combination or asset acquisition by first applying a screen test to determine if substantially all of the fair value of
the gross assets acquired is concentrated in a single identifiable asset or group of similar identifiable assets. Based on the
fair  values  of  the  gross  assets  acquired,  the  Company  determined  the  screen  test  was  not  met.  The  Company  further
analyzed whether or not the acquired inputs and processes that have the ability to create outputs would meet the definition
of a business. Significant judgment is required in the application of the screen test to determine whether an acquisition is a
business combination or an acquisition of assets.

Identifiable  assets  and  liabilities  of  Corlieve,  including  identifiable  intangible  assets,  were  recorded  at  their  fair
values as of the Acquisition Date, when the Company obtained control. The excess of the fair value of the consideration
transferred over the fair value of the net assets acquired was recorded as goodwill.

Consideration

On the Acquisition Date, the Company acquired 97.7% of the outstanding ordinary shares of Corlieve in return for
EUR  44.9  million  ($53.3  million  as  of  the  Acquisition  Date).  The  Company  financed  the  Corlieve  Transaction  from  its
cash on hand. The Company acquired the remaining outstanding ordinary shares in February, July and September 2022 for
a total of EUR 1.8 million ($1.9 million).

In addition to the payments to acquire 100% of the outstanding ordinary shares, Corlieve’s former shareholders
are  eligible  to  receive  up  to  EUR  40.0  million  ($42.8  million  as  of  December  31,  2022)  upon  achievement  of  certain
development  milestones  through  Phase  I/II  and  EUR  160.0  million  ($171.3  million  as  of  December  31,  2022)  upon
achievement  of  certain  milestones  associated  with  Phase  III  development  and  obtaining  approval  to  commercialize
Corlieve’s  target  candidate  for  the  treatment  of  temporal  lobe  epilepsy  (“AMT-260”  or  “TLE”)  in  the  United  States  of
America  and  the  European  Union.  The  Company  may  elect  to  pay  up  to  25%  of  such  milestone  payments  through  the
issuance of the Company’s ordinary shares.

As  of  the  Acquisition  Date,  the  Company  recorded  EUR  20.2  million  ($24.0  million)  as  a  contingent  liability

(presented as “Non-current liability”) for the fair value of these milestone payments.

Identified intangible assets

The Company identified various licenses that combined with the results of the research and development activities

conducted in relation to AMT-260 since incorporation of Corlieve in 2019 constitute an IPR&D Intangible Asset.

The  Company  determined  the  fair  value  of  the  IPR&D  Intangible  Asset  using  a  present  value  model  based  on
expected cash flows. Estimating the amounts and timing of cash flows required to complete the development of AMT-260
as well as net sales, cost of goods sold, and sales and marketing costs involved considerable judgment and uncertainty. The
expected  cash  flows  are  materially  impacted  by  the  probability  of  successfully  completing  the  various  stages  of
development  (i.e.,  dosing  of  first  patient  in  clinical  trial,  advancing  into  late-stage  clinical  development  and  obtaining
approval to commercialize a product candidate) as well as the weighted average cost of capital of 10.4% used to discount
the  expected  cash  flows.  Based  on  all  such  information  and  its  judgment  the  Company  estimated  the  fair  value  of  the
IPR&D Intangible Asset at EUR 53.6 million ($63.6 million) as of the Acquisition Date.

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Deferred tax liability, net

Corlieve’s deferred tax assets at the time of acquisition amounted to EUR 1.5 million ($1.7 million). Recognition
of  the  IPR&D  Intangible  Asset  gave  rise  to  a  deferred  tax  liability  of  EUR  13.4  million  ($15.9  million)  at  the  enacted
French corporate income tax rate of 25.0%. The Company consequently recorded a net deferred tax liability of EUR 11.9
million ($14.2 million as of the Acquisition Date). Changes in the net deferred tax liability after the Acquisition Date will
be recorded in income tax expense in the consolidated statements of operations.

Goodwill

Goodwill  represents  the  excess  of  total  consideration  over  the  estimated  fair  value  of  net  assets  acquired.  The
Company recorded EUR 23.9 million ($28.4 million) of goodwill in the consolidated balance sheet as of the Acquisition
Date. The goodwill primarily relates to the recognition of a deferred tax liability recognized in association with the IPR&D
Intangible  asset  of  EUR  13.4  million  ($15.9  million  as  of  Acquisition  Date)  as  well  as  the  fair  market  value  of  the
experienced workforce and potential synergies from the acquisition. The Company allocated the goodwill to its reporting
unit. The Company does not expect any portion of this goodwill to be deductible for income tax purposes.

Debt

As of the Acquisition Date, Corlieve held a loan with outstanding amount equal to EUR 1.0 million ($1.2 million),
which  loan  was  repaid  in  its  entirety  in  September  2021.  As  of  the  Acquisition  Date,  Corlieve  also  held  a  loan  with
outstanding amount equal to EUR 0.4 million ($0.4 million), which was repaid in its entirety in December 2021.

Other

As of the Acquisition Date, the Company also acquired other assets and assumed other liabilities, which included
among others, EUR 2.9 million ($3.4 million) of current assets, which consisted of EUR 2.8 million ($3.3 million) of cash,
and EUR 1.1 million ($1.3 million) of current liabilities.

4.            Collaboration arrangements and concentration of credit risk

CSL Behring collaboration

On the Signing Date, uniQure biopharma B.V., a wholly-owned subsidiary of uniQure N.V., entered into the CSL
Behring Agreement with CSL Behring, pursuant to which CSL Behring received exclusive global rights to the Product. On
May 6, 2021, a day after the expiration of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of
1976, the CSL Behring Agreement became fully effective (“Closing”).

The Company concluded that CSL Behring is a customer in accordance with Topic 606.

The Company identified two material performance obligations related to the CSL Behring Agreement:

(i)

(ii)

License Sale; and

Manufacturing Development.

These  performance  obligations  are  considered  distinct  from  one  another,  as  CSL  Behring  can  benefit  from  the
identified service either on its own or together with other resources that are readily available to CSL Behring, and as the
performance  obligations  are  separately  identifiable  from  other  performance  obligations  in  the  CSL  Behring  Agreement.
The Company continued to develop the Product between the Signing Date and Closing and performed certain reimbursable
activities  to  fulfill  the  transfer  of  the  global  rights  (“Additional  Covenants”  and  together  with  the  License  the  “License
Sale”). The Additional Covenants are not considered distinct from the performance obligation to sell the license to CSL
Behring  as  CSL  Behring  could  not  benefit  from  the  Additional  Covenants  on  their  own,  or  have  these  activities  be
performed with readily available resources.

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License Sale

The  Company  determined  that  the  fixed  upfront  payment  of  $450.0  million  and  the  $12.4  million  that  the
Company  received  in  May  2021  in  relation  to  the  Additional  Covenants  should  be  allocated  to  the  License  Sale.  In
addition,  the  Company  concluded  that  variable  milestone  payments,  sales  milestone  payments  and  royalties  should  be
allocated  to  the  License  Sale  performance  obligation  as  well.  The  Company  determined  that  the  License  Sale  was
completed  on  May  6,  2021,  when  it  transferred  the  license  and  CSL  Behring  assumed  full  responsibility  for  the
development and commercialization of the Product. At Closing, the Company evaluated the amounts of potential payments
and the likelihood that the payments will be received. The Company utilized the most likely amount method to estimate the
variable  consideration  to  be  included  in  the  transaction  price.  Since  the  Company  cannot  control  the  achievement  of
regulatory and first commercial sales milestones, the Company concluded that the potential payments were constrained as
of Closing. The Company determined that it would recognize revenue related to these payments only to the extent that it
becomes probable that no significant reversal of recognized cumulative revenue will occur thereafter.

The  Company  determined  that  achievement  of  a  total  of  $55.0  million  of  milestone  payments  related  to  the
submissions of a biologics license application (“BLA”) and market authorization application (“MAA”) was probable as of
February 25, 2022, the time of filing the 2021 financial statements, and hence recorded these as license revenue in the year
ended December 31, 2021. In March and April 2022, the global regulatory submissions were submitted and the Company
received the $55.0 million owed to it from CSL Behring.

The Company recorded $100.0 million in variable milestone revenue related to a first sale of HEMGENIX™ in
the U.S. during the year ended December 31, 2022 as the Company considers the occurrence of this event to be probable
following the November 2022 BLA approval of HEMGENIX™. Despite the approval of the MAA for HEMGENIX™ by
the  Europeans  Medicines  Agency  (“EMA”)  in  February  2023,  the  Company  did  not  record  the  $75.0  million  variable
milestone payment related to a first sale of HEMGENIX™ in the one of five major European countries, namely France,
Germany, Italy, Spain, and the United Kingdom, as license revenue in the year ended December 31, 2022. The Company
considers  that  the  milestone  is  only  owed  if  achieved  prior  to  July  2,  2023,  which  is  contingent  on  factors  outside  the
Company’s control and thus the Company determined that occurrence was not probable as of December 31, 2022.

The  Company  is  also  eligible  to  receive  up  to  $1.3  billion  in  additional  payments  based  on  the  achievement  of
commercial  milestones.  The  CSL  Behring  Agreement  also  provides  that  the  Company  will  be  eligible  to  receive  tiered
double-digit royalties in a range of up to a low-twenties percent of net sales of the Product based on sales thresholds. The
Company  will  include  payments  related  to  sales  milestones  in  the  transaction  price  when  their  achievement  becomes
probable, and it will include royalties on the sale of Product once these have been earned.

The Company recognized $100.0 million and $517.4 million of revenues related to the License Sale in the years

ended December 31, 2022 and December 31, 2021, respectively (nil in 2020).

The Company records expenses related to its existing license and other agreements as well as its financial advisor

for a high single digit percentage of any such revenue recognized associated to meeting a milestone.

Manufacturing Development

The  Company  determined  that  the  $50.0  million  variable  milestone  payment  related  to  Manufacturing
Development  should  be  allocated  to  the  Manufacturing  Development  performance  obligation.  The  Company  concluded
that this milestone payment represents the stand-alone selling price (“SSP”) of the services based on the estimated cost of
providing  the  services  including  a  reasonable  margin.  Manufacturing  Development  includes  providing  information
regarding  a  next  generation  manufacturing  process  of  the  Product  to  CSL  Behring.  CSL  Behring  did  not  request  such
services during the year ended December 31, 2022.

The  variable  consideration  will  be  reduced  if  the  Company  does  not  complete  the  development  by  pre-agreed
dates following BLA, respectively MAA approval. The Company utilized the most likely amount method to estimate the
variable consideration to be included in the transaction price. As of December 31, 2022, the Company has not recognized
any revenue related to the Manufacturing Development milestone.

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Contract manufacturing

On  the  Signing  Date,  the  Company  and  CSL  Behring  entered  into  a  development  and  commercial  supply
agreement, pursuant to which, among other things, the Company will supply the Product to CSL Behring at an agreed-upon
price commensurate with the SSP. The Company will be responsible for supplying development and commercial Product
until  such  time  that  these  capabilities  may  be  transferred  to  CSL  Behring  or  a  designated  contract  manufacturing
organization. On September 6, 2022, CSL Behring notified the Company of its intent to transfer manufacturing technology
related to the Product in the coming years to a third-party contract manufacturer designated by CSL Behring. CSL Behring
also  requested  that  the  Company  continue  to  serve  as  a  manufacturer  of  the  Product  after  the  Company  completes  the
technology  transfer  to  a  third  party.  The  Company  and  CSL  Behring  are  in  the  process  of  negotiating  the  terms  of  the
transfer of manufacturing responsibility pursuant to the CSL Behring Agreement.

The Company generated $1.7 million contract manufacturing revenue from sales to CSL Behring. The Company
recognizes contract manufacturing revenue when CSL Behring obtains control of the Product. The Company incurred $2.1
million of cost in relation to its contract manufacturing activities during the year ended December 31, 2022.

Collaboration services

Following Closing, the Company was facilitating the completion of the HOPE-B clinical trial on behalf of CSL
Behring until CSL Behring took over the execution of the clinical trials in December 2022. Activities related to on-demand
development  services  as  well  as  activities  related  to  the  completing  the  HOPE-B  clinical  trial  are  reimbursed  by  CSL
Behring at an agreed full-time-employee rate (“FTE-rate”) and CSL Behring also reimburses agreed third-party expenses
incurred  in  relation  to  performing  these  activities.  The  Company  concluded  that  these  rights  at  Closing  do  not  represent
material rights.

The Company recognized $3.0 million of collaboration revenue in the year ended December 31, 2022, compared

to $2.4 million and nil in the same periods in 2021 and 2020.

Accounts receivable and contract asset

As of December 31, 2022, the Company recorded accounts receivable of $2.2 million from CSL Behring related
to collaboration services as well as a contract asset of $100.0 million expected to be received from CSL Behring following
the first sale of HEMGENIX™ in the U.S in 2023.

As of December 31, 2021, the Company recorded accounts receivable of $2.9 million from CSL Behring related
to collaboration services as well as a contract asset of $55.0 million associated with milestone payments due upon CSL
Behring’s global regulatory submissions for HEMGENIX™.

Bristol-Myers Squibb collaboration

2015 agreement

In  May  2015,  the  Company  entered  into  the  BMS  CLA  and  various  related  agreements  with  BMS,  which  the
Company  collectively  refers  to  as  the  BMS  CLA,  which  provided  BMS  with  exclusive  access  to  the  Company’s  gene
therapy  technology  platform  for  the  research,  development  and  commercialization  of  therapeutics  aimed  at  multiple
Collaboration Targets. The initial four-year research term under the collaboration terminated on May 21, 2019.

2020 amendment

On December 1, 2020, the Company and BMS entered into the amended BMS CLA. Under the amended BMS
CLA,  BMS  was  limited  to  four  Collaboration  Targets.  For  a  period  of  one-year  from  the  effective  date  of  the  amended
BMS CLA, BMS was able to replace up to two of the four active Collaboration Targets with two new targets in the field of
cardiovascular disease. The Company continued to be eligible to receive research, development, and regulatory milestone
payments of up to $217.0 million for each Collaboration Target, if defined milestones had been achieved.

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Since  the  December  2020  amendment,  BMS  no  longer  was  entitled  to  designate  a  fifth  to  tenth  Collaboration
Targets and as such the Company’s remaining obligations under the amended BMS CLA were substantially reduced. The
Company also no longer was entitled to receive up to an aggregate $16.5 million in target designation payments for the
research, development and regulatory milestone payments associated with the fifth to tenth Collaboration Targets.

For as long as any of the four Collaboration Targets were being advanced, BMS might have placed a purchase

order to be supplied with research, clinical and commercial supplies.

The amended BMS CLA did not extend the initial four-year research term that expired in May 2019. BMS could
place purchase orders to be provided with limited services primarily related to analytical and development efforts in respect
of the four Collaboration Targets. BMS could have requested such services for a period not to exceed the earlier of (i) the
completion of all activities under a Research Plan and (ii) November 30, 2023. BMS continued to reimburse the Company
for these services.

2022 Termination

On November 21, 2022, the Company received written notice that BMS is terminating the BMS CLA as amended

 effective February 21, 2023.

Services to BMS were rendered by the Dutch operating entity. Total collaboration and license revenue generated
with BMS are as follows (presented as revenue from a related party up until the effective date of the amended BMS CLA
and presented as revenue after the effective date):

Bristol Myers Squibb

Years ended December 31, 

2022

$
$

1,752
1,752

2021
(in thousands)
4,176
$
4,176
$

2020

$
$

37,514
37,514

Amounts  owed  by  BMS  in  relation  to  the  Collaboration  and  License  Revenue  are  as  follows  (presented  as

“Accounts receivables” as of December 31, 2022 and 2021:

Bristol Myers Squibb
Total

License Revenue

December 31, 
2022

December 31, 
2021

$
$

(in thousands)
136
136

$
$

914
914

The Company recognized no License Revenue for the year ended December 31, 2022 (December 31, 2021: nil

million, December 31, 2020: $33.0 million).

In  2015  the  Company  received  $75.1  million  of  payments  that  it  allocated  to  License  Revenue.  The  Company
recognized  License  Revenue  over  the  expected  performance  period  based  on  its  measure  of  progress  towards  the
completion of certain activities related to its services.

 The Company did not identify any new distinct performance obligations and determined the amended BMS CLA
did not represent a separate contract in accordance with ASC 606. The Company evaluated the effect the modification had
on  its  measure  of  progress  towards  the  completion  of  its  performance  obligation  related  to  License  Revenue  and
determined that its remaining performance obligation under the amended BMS CLA was immaterial and recognized the
remaining balance of unrecognized License Revenue as of November 30, 2020 of $27.8 million in profit and loss during
the year ended December 31, 2020 as License Revenue from a related party.

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The  Company  included  variable  consideration  related  to  any  research,  development,  and  regulatory  milestone
payments,  in  the  transaction  price  once  it  considered  it  probable  that  including  these  payments  in  the  transaction  price
would  not  result  in  the  reversal  of  cumulative  revenue  recognized.  Due  to  the  significant  uncertainty  surrounding  the
development of gene-therapy product candidates and the dependence on BMS’s performance and decisions, the Company
with the exception of a $4.4 million research milestone payment received and recorded as License Revenue in December
2020  did  not  consider  this  probable  as  of  December  31,  2021.  No  variable  consideration  became  due  prior  to  the
termination of the amended BMS CLA on February 21, 2023.

Under the amended BMS CLA, the Company would have recognized License Revenue related to product sales by
BMS from any of the Collaboration Targets when the sales would have occurred. The Company was eligible to receive net
sales-based milestone payments and tiered mid-single to low double-digit royalties on product sales.

Collaboration Revenue

The  Company  recognized  collaboration  revenues  associated  with  Collaboration  Target-specific  pre-clinical
analytical development and process development activities that were reimbursable by BMS under the BMS CLA and the
amended BMS CLA as well as other related agreements. Collaboration Revenue related to these contracted services was
recognized when performance obligations were satisfied.

The Company generated $1.8 million collaboration revenue for the year ended December 31, 2022 (December 31,

2021: $4.2 million; December 31, 2020: $0.2 million).

5.

Investment securities

The following table summarizes the Company’s investments into sovereign debt as of December 31, 2022:

Current investments:

Obligations of governmental agencies (held-to-
maturity)

Non-current investments:

Obligations of governmental agencies (held-to-
maturity)

Total

Amortized cost, as
adjusted

Gross unrealized
holding gains

Gross unrealized
holding losses

Estimated fair
value

At December 31, 2022

(in thousands)

$

124,831

$

— $

(283) $

124,548

39,984
164,815

$

$

—
— $

(43)
(326) $

39,941
164,489

No  investments  classified  as  held-to-maturity  were  purchased  in  the  prior  years.  Inputs  to  the  fair  value  of  the

investments are considered Level 2 inputs.

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6.

Inventories

The following table summarizes the inventory balances as of December 31, 2022:

Raw materials
Work in progress
Finished goods
Inventories

December 31, 
2022

December 31, 
2021

(in thousands)

$

$

3,584
1,874
1,466
6,924

$

$

—
—
—
—

7.            Fair value measurement and Other non-operating (losses) / gains

The Company measures certain financial assets and liabilities at fair value, either upon initial recognition or for

subsequent accounting or reporting.

The carrying amount of cash and cash equivalents, accounts receivable from licensing and collaboration partners,
prepaid expenses, other assets, accounts payable, accrued expenses and other current liabilities reflected in the consolidated
balance sheets approximate their fair values due to their short-term maturities.

The  Company’s  material  financial  assets  include  cash  and  cash  equivalents,  restricted  cash  and  investment
securities. Cash and cash equivalents and restricted cash are measured at fair value using Level 1 inputs. Restricted cash is
included within “Other non-current assets” within the consolidated balance sheets. Investment securities are measured at
amortized cost.

The following table sets forth the balances and changes in fair values of liabilities that are measured at fair value

using Level 3 inputs:

Contingent

Derivative
financial

     consideration      instruments     

Total

Balance at December 31, 2019
Net gains recognized in profit or loss
Derecognition of BMS warrants
Recognition of derivative financial liability of CoC-payment
Currency translation effects
Balance at December 31, 2020
Amount recorded for contingent consideration on Acquisition Date of Corlieve
Net losses recognized in profit or loss
Currency translation effects
Balance at December 31, 2021
Net losses recognized in profit or loss
Currency translation effects
Balance at December 31, 2022

$

$

$

$

121

— $
—
—
—
—
— $

$

$

(in thousands)
3,075
(2,300)
(796)
2,613
53
2,645
—
160
—
2,805
(2,760)
(45)
— $

$

$

$

23,950
6,683
(1,091)
29,542
7,080
(1,306)
35,316

3,075
(2,300)
(796)
2,613
53
2,645
23,950
6,843
(1,091)
32,347
4,320
(1,351)
35,316

    
    
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Contingent consideration

The  Company  is  required  to  pay  up  to  EUR  178.8  million  ($191.4  million  at  the  December  31,  2022  foreign
exchange  rate)  to  the  former  shareholders  of  Corlieve  upon  the  achievement  of  contractually  defined  milestones  in
connection with the Company’s acquisition of Corlieve (refer to Note 3 “Corlieve transaction”). The Company recorded a
liability for the fair market value of the contingent consideration of EUR 20.2 million ($24.0 million) at the Acquisition
Date.  The  fair  market  value  was  determined  using  unobservable  initial  inputs  with  respect  to  (i)  the  probability  of
achieving the relevant milestones, or POS, (ii) the estimated timing of achieving such milestones, and (iii) the interest rate
used  to  discount  the  payments.  The  Company  determined  the  fair  market  value  of  the  contingent  consideration  by
calculating  the  probability-adjusted  payments  based  on  each  milestone’s  probability  of  achievement.  The  probability-
adjusted payments were then discounted to present value using a discount rate representing the Company’s credit risk. This
discount rate was determined using the effective interest rate of the Company’s existing debt facility adjusted for difference
in maturity dates based on market data on effective yields for U.S. bonds with a CCC credit rating.

The fair value of the contingent consideration as of December 31, 2022 was $35.3 million (2021: $29.5 million)
using discount rates ranging from 14.0% to 14.4% (December 31, 2021: 10.9% to 11.9%) as well as a 66.0% (December
31, 2021: 55.0%) likelihood of AMT-260 advancing into clinical development by no later than late 2023. If as of December
31,  2022  the  Company  had  assumed  a  100%  likelihood  of  AMT-260  advancing  into  clinical  development,  then  the  fair
value  of  the  contingent  consideration  would  have  increased  to  $48.8  million.  If  as  of  December  31,  2022  the  Company
assumed  that  it  would  discontinue  development  of  the  AMT-260  program,  then  the  contingent  consideration  would  be
released  to  income.  Changes  in  fair  value  of  the  contingent  liability  are  recognized  within  research  and  development
expenses in the consolidated statements of operations.

As  of  December  31,  2022,  the  Company  classified  $26.0  million  of  the  total  contingent  consideration  of  $35.3
million as current liabilities. The balance sheet classification between current and non-current liabilities is based upon the
Company’s best estimate of the timing of settlement of the remaining relevant milestones.  

Derivative financial instruments

The Company recorded the following results in other non-operating (losses) / gains related to the changes in the

fair value of derivative financial instruments.

Other non-operating gains:
Derivative gains
Total other non-operating gains:
Other non-operating losses:
Derivative losses
Other non-operating (losses) / gains, net

Derivative financial instruments BMS

2022

Years ended December 31, 
2021
(in thousands)

2020

$

$

2,760
2,760

—
2,760

$

$

— $
—

(160)
(160) $

483
483

—
483

Pursuant to the BMS CLA, the Company in 2015 granted BMS two warrants that were subsequently terminated in

connection with the amendment to the BMS CLA on December 1, 2020. The Company granted to BMS:

● A warrant that allowed BMS to purchase a specific number of the Company’s ordinary shares such that its
ownership would have equaled 14.9% immediately after such purchase (“1st warrant”). The 1st warrant could
have  been  exercised  on  the  later  of  (i)  the  date  on  which  the  Company  received  from  BMS  the  Target
Designation  Fees  (as  defined  in  the  BMS  CLA)  associated  with  the  first  six  new  targets  (a  total  of  seven
Collaboration  Targets);  and  (ii)  the  date  on  which  BMS  designated  the  sixth  new  target  (the  seventh
Collaboration Target); and

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● A warrant that allowed BMS to purchase a specific number of the Company’s ordinary shares such that its
ownership would have equaled 19.9% immediately after such purchase (“2nd warrant” and together with 1st
warrant,  the  “warrants”).  The  warrant  could  have  been  exercised  on  the  later  of  (i)  the  date  on  which  the
Company received from BMS the Target Designation Fees associated with the first nine new targets (a total
of ten  Collaboration  Targets);  and  (ii)  the  date  on  which  BMS  designated  the  ninth  new  target  (the  tenth
Collaboration Target).

On December 1, 2020, the Company derecognized the warrants when these were terminated in accordance with
the amended BMS CLA. During the year ended December 31, 2020, the Company recognized a $3.1 million gain in non-
operating  (losses)  /  gains  related  to  the  fair  value  changes  of  the  BMS  warrants,  which  includes  $0.8  million  from  the
derecognition of the BMS warrants on December 1, 2020.

On  December  1,  2020,  as  part  of  the  amended  BMS  CLA,  the  Company  and  BMS  agreed  that  upon  the
consummation of a change of control transaction of uniQure that occurs prior to December 1, 2026 or BMS’ delivery of a
target cessation notice for all four Collaboration Targets, the Company (or its third party acquirer) shall pay to BMS a one-
time, non-refundable, non-creditable cash payment of $70.0 million, provided that (x) if $70.0 million is greater than five
percent (5.0%) of the net proceeds (as contractually defined) from such change of control transaction, the payment shall be
an amount equal to five percent of such net proceeds, and (y) if $70.0 million is less than one percent of such net proceeds,
the change of control payment shall be an amount equal to one percent of such net proceeds (“CoC-payment”).

The  Company  determined  that  the  CoC-payment  should  be  recorded  as  a  derivative  financial  liability  as  of  the
December  1,  2020  initial  recognition  and  that  subsequent  changes  in  the  fair  market  value  of  this  derivative  financial
liability  should  be  recorded  in  profit  and  loss.  The  fair  market  value  of  the  derivative  financial  liability  is  materially
impacted  by  the  probability  that  market  participants  assign  to  the  likelihood  of  the  occurrence  of  a  change  of  control
transaction  that  would  give  rise  to  a  CoC-payment.  This  probability  represents  an  unobservable  input.  The  Company
determined the fair market value of the derivative financial liability by using a present value model based on expected cash
flow. The expected cash flows are materially impacted by the probability that market participants assign to the likelihood of
the  occurrence  of  a  change  of  control  transaction  within  the  biotechnology  industry.  The  Company  estimated  this
unobservable input using the best information available as of December 2021. The Company obtained reasonably available
market  information  that  it  believed  market  participants  would  use  in  determining  the  likelihood  of  the  occurrence  of  a
change-of  control  transaction  within  the  biotechnology  industry.  Selecting  and  evaluating  market  information  involves
considerable judgment and uncertainty. Based on all such information and its judgment, the Company estimated that the
fair market value of the derivative financial liability (presented within “Other non-current liabilities”) as of December 31,
2021  was  $2.8  million.  The  Company  recorded  a  $0.2  million  loss  in  the  year  ended  December  31,  2021  related  to  an
increase in the fair market value of the derivative financial liability and a $2.6 million loss in the year ended December 31,
2020 related to the initial recognition of this derivative financial liability

The Company determined the fair market value of the derivative financial liability to be nil as of December 31,
2022 as no change of control transaction had been consummated prior to the termination of the amended BMS CLA on
February 21, 2023. The Company considered the probability of a change of control transaction occurring before the
Termination Date to be remote. This resulted in the derecognition of the derivative financial liability for the year ended
December 31, 2022.

Accordingly, the Company recorded a $2.8 million gain within “Other non-operating (losses) / gains” in the year

ended December 31, 2022

Other

As  of  December  31,  2022,  the  Company  recorded  $0.3  million  liability  related  to  consideration  for  post-
acquisition  services,  presented  within  Other  non-current  liabilities  in  connection  with  the  Company’s  acquisition  of
Corlieve (December 31, 2021: $0.8 million).

Investment securities

Refer to Note 5 “Investment securities” for the fair value of the investment securities as of December 31, 2022.

Other

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8.         Property, plant, and equipment, net

The following table presents the Company’s property, plant, and equipment as of December 31:

Leasehold improvements
Laboratory equipment
Office equipment
Construction-in-progress
Total property, plant, and equipment
Less accumulated depreciation
Property, plant and equipment, net

December 31, 
2022

December 31, 
2021

(in thousands)

$

$

44,871
39,393
4,985
5,409
94,658
(44,126)
50,532

$

$

45,372
25,499
4,465
5,069
80,405
(36,900)
43,505

Total  depreciation  expense  was  $8.2  million  for  the  year  ended  December  31,  2022  (December  31,  2021:  $6.1
million, December 31, 2020: $5.7 million). Depreciation expense is allocated to research and development expenses and
cost  of  contract  manufacturing  to  the  extent  it  relates  to  the  Company’s  manufacturing  facility  and  equipment  and
laboratory equipment. All other depreciation expenses are allocated to selling, general and administrative expense.

The following table summarizes property, plant, and equipment by geographic region.

Lexington, Massachusetts (United States of America)
Amsterdam (the Netherlands)
Other
Total

9.         Right-of-use asset and lease liabilities

    December 31,     December 31, 

2022

2021

(in thousands)

$

$

20,258
30,252
22
50,532

$

$

17,311
26,160
34
43,505

The Company’s most significant leases relate to office and laboratory space under the following operating lease

agreements:

Lexington, Massachusetts / United States

In July 2013, the Company entered into a lease for a facility in Lexington, Massachusetts, United States. The term
of the lease commenced in November 2013, was set for 10 years starting from the 2014 rent commencement date and is
non-cancellable.  Originally,  the  lease  for  this  facility  had  a  termination  date  of  2024.  In  November  2018,  the  term  was
expanded  by  five  years  to  June  2029.  The  lease  continues  to  be  renewable  for  two  subsequent  five-year  terms.
Additionally, the lease was expanded to include an additional 30,655 square feet within the same facility and for the same
term. The lease of the expansion space commenced on June 1, 2019.

The  contractually  fixed  annual  increase  of  lease  payments  through  2029  for  both  the  extension  and  expansion

lease have been included in the lease payments.

In December 2021, the Company entered into a new lease for an additional facility in Lexington, Massachusetts,
United States of approximately 13,501 square feet of space. The lease commenced in May 2022, is set for seven years and
is non-cancellable. The lease is renewable for one five-year term.

In  February  2022,  the  Company  also  entered  into  a  new  lease  for  an  additional  facility  in  Lexington,
Massachusetts, United States of approximately 12,716 square feet. The lease commenced in November 2022 and is set for
a non-cancellable period of seven years and four months. The lease is renewable for one five-year term.

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Amsterdam / The Netherlands

In  March  2016,  the  Company  entered  into  a  16-year  lease  for  a  facility  in  Amsterdam,  the  Netherlands  and
amended this agreement in June 2016. The lease for the facility terminates in 2032, with an option to extend in increments
of five-year periods. The lease contract includes variable lease payments related to annual increases in payments based on a
consumer price index.

On  December  1,  2017,  the  Company  entered  into  an  agreement  to  sub-lease  three  of  the  seven  floors  of  its
Amsterdam  facility  for  a  ten-year  term  ending  on  December  31,  2027,  with  an  option  for  the  sub-lessee  to  extend  until
December  31,  2031.  In  February  2020,  the  Company  amended  the  agreement  to  sub-lease  to  take  back  one  of  the  three
floors effective March 1, 2020. The fixed lease payments to be received during the remaining term under the agreement to
sub-lease amount to $4.8 million (EUR 4.5 million) as of December 31, 2022.

In  May  2021,  the  Company  entered  into  a  sublease  agreement  to  let  an  additional  approximately  1,080  square
meters of office space to accommodate the hiring of additional full-time employees. The lease expires in October 2028 and
includes an option to break the lease on October 31, 2023.

Operating lease liabilities

The components of lease cost were as follows:

Operating lease cost
Variable lease cost
Sublease income
Total lease cost

Year ended December 31, 
2021

2020

2022

(in thousands)

$

$

5,932
785
(849)
5,868

$

$

5,306
698
(907)
5,097

$

$

5,052
607
(904)
4,755

The table below presents the lease-related assets and liabilities recorded on the Consolidated balance sheets.

Assets

Operating lease right-of-use assets

Liabilities
Current

Current operating lease liabilities

Non-current

Non-current operating lease liabilities

Total lease liabilities

Other information

     December 31, 

December 31,

2022

2021

(in thousands)

$

32,726

25,573

8,382

5,774

31,719
40,101

$

28,987
34,761

The weighted-average remaining lease term as of December 31, 2022, is 7.2 years, compared to 8.3 years as of
December 31, 2021, and the weighted-average discount rate as of December 31, 2022 is 11.2%, compared to 11.3% as of
December 31, 2021. The Company uses an incremental borrowing rate applicable to the lease asset.

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The table below presents supplemental cash flow and non-cash information related to leases.

Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows for operating leases

Right-of-use asset obtained in exchange for lease obligation
Operating lease

Year ended December 31, 

2022

2021

2020

(in thousands)

$

$

7,532

9,824

$

$

5,738

1,699

$

$

5,769

—

Undiscounted cash flows

The table below reconciles the undiscounted cash flows as of December 31, 2022, for each of the first five years
and  the  total  of  the  remaining  years  to  the  operating  lease  liabilities  recorded  on  the  Consolidated  balance  sheet  as  of
December 31, 2022.

Lexington

Amsterdam(1)

Other

Total

2023
2024
2025
2026
2027
Thereafter
Total lease payments

Less: amount of lease payments representing interest payments
Present value of lease payments
Less: current operating lease liabilities
Non-current operating lease liabilities

$

5,236
5,504
5,859
6,031
6,207
9,343
$ 38,180

(10,611)
27,569
(5,236)
$ 22,333

$

$

$

$

(in thousands)
3,042
1,993
1,993
1,993
1,997
7,190
18,208

$

104
104
104
104
104
469
989

$

8,382
7,601
7,956
8,128
8,308
17,002
$ 57,377

(6,268)
11,940
(3,042)
8,898

$

(397)
592
(104)
488

(17,276)
40,101
(8,382)
$ 31,719

(1) Payments are due in EUR and have been translated at the foreign exchange rate as of December 31, 2022, of $1.07 / €1.00)

10.            Intangible assets, net and Goodwill

The following table presents the Company’s acquired licenses and acquired IPR&D as of December 31:

Acquired licenses
Less accumulated amortization
Acquired licenses, net
Acquired IPR&D Intangible Asset
Intangibles, net

a. Acquired licenses

     December 31,       December 31, 

2022

2021

(in thousands)

$

$

$

2,346
(900)
1,446
57,332
58,778

$

$

$

4,755
(2,827)
1,928
60,758
62,686

All  acquired  licenses  are  owned  by  uniQure  biopharma  B.V,  a  subsidiary  of  the  Company.  The  remaining

 weighted average life is 11.5 years as of December 31, 2022. (December 31 , 2021 10.8 years.)

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As of December 31, 2022, the estimated future amortization expense for each of the five succeeding years and the

period thereafter is as follows:

Years

2023
2024
2025
2026
2027
Thereafter
Total

Amount
(in thousands)
126
126
126
126
126
816
1,446

$

$

The amortization expense related to licenses for the year ended December 31, 2022 was $0.4 million (December
31,  2021:  $1.2  million;  December  31,  2020:  $4.6  million).  In  2020,  the  Company  disposed  of  a  number  of  licenses
determined to have no alternative future use. The impairment expense related to licenses for the year ended December 31,
2022 was $0.0 million (December 31, 2021: $0.0 million; December 31, 2020 $0.3 million).

b. Acquired in-process research and development

As part of its acquisition of Corlieve as of July 30, 2021, the Company identified certain intangible assets related

to an IPR&D Intangible Asset. Refer to Note 3 “Corlieve transaction”.

c. Goodwill

As  part  of  its  acquisition  of  Corlieve  as  of  July  30,  2021,  the  Company  recorded  goodwill.  Refer  to  Note  3

“Corlieve transaction”.

11.            Accrued expenses and other current liabilities

Accrued expenses and other current liabilities include the following items:

Accruals for goods received from and services provided by vendors-
not yet billed
Personnel related accruals and liabilities
Accrued contract fulfillment costs and costs to obtain a contract
Total

December 31,  December 31, 

2022

2021

(in thousands)

$

$

11,120
17,201
2,250
30,571

$

$

13,012
12,603
2,872
28,487

12.           Long-term debt

On  June  14,  2013,  the  Company  entered  into  a  venture  debt  loan  facility  with  Hercules  Capital,  Inc.  (formerly
known as Hercules Technology Growth Capital, Inc.) (“Hercules”), which was amended and restated on June 26, 2014, and
again on May 6, 2016 (“2016 Amended Facility”). On December 6, 2018, the Company signed an amendment that both
refinanced the then-existing $20.0 million 2016 Amended Facility and allowed the Company to draw down an additional
$15.0 million (“2018 Amended Facility”). The 2018 Amended Facility extended the loan’s maturity date from May 1, 2020
until June 1, 2023. The interest rate was adjustable and was the greater of (i) 8.85% and (ii) 8.85% plus the prime rate less
5.50% per annum. In May 2020 the Company paid a back-end fee of $1.0 million in relation to the 2016 Amended Facility.

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On  January  29,  2021,  the  Company  and  Hercules  amended  the  2018  Amended  Facility  (“2021  Amended
Facility”). Pursuant to the 2021 Amended Facility, Hercules agreed to an additional Facility of $100.0 million (“Tranche
B”) increasing the aggregate principal amount of the term loan facilities from $35.0 million to up to $135.0 million. On
January 29, 2021, the Company drew down $35.0 million of the Tranche B. Advances under Tranche B bore interest at a
rate  equal  to  the  greater  of  (i)  8.25%  or  (ii)  8.25%  plus  the  prime  rate,  less  3.25%  per  annum.  The  principal  balance  of
$70.0 million and all accrued but unpaid interest on advances under Tranche B was due on June 1, 2023, which date could
had been extended by the Company by up to two twelve-month periods. Advances under the 2021 Amended Facility could
have been prepaid without charge after July 29, 2021. The back-end fee in respect of advances under the 2021 Amended
Facility  ranged  from  1.65%  to  6.85%,  depending  on  the  repayment  date.  In  addition  to  Tranche  B,  the  2021  Amended
Facility had also extended the interest only payment period of the previously funded $35.0 million term loan (“Tranche A”)
from January 1, 2022 to June l, 2023.

On  December  15,  2021,  the  Company  and  Hercules  amended  and  restated  the  2021  Amended  Facility  (“2021
Restated Facility”). Pursuant to the 2021 Restated Facility, Tranche A and Tranche B of the 2021 Amended Facility with a
total outstanding balance of $70.0 million were consolidated into one tranche with a total commitment of $100.0 million.
The Company drew down an additional $30.0 million, resulting in total principal outstanding as of December 31, 2021 of
$100.0 million. The 2021 Restated Facility extended the loan’s maturity date from June 1, 2023 until December 1, 2025.
The interest-only period was extended from January 1, 2023 to December 1, 2024, or December 1, 2025 if, prior to June
30, 2024, either (a) the BLA for AMT-061 is approved by the U.S. Food and Drug Administration (“FDA”) or (b) AMT-
130  is  advanced  into  a  pivotal  trial.  On  November  22,  2022,  the  FDA  approved  the  BLA  for  AMT-061  resulting  in  the
extension of the interest-only period to December 1, 2025. The Company is required to repay the entire principal balance
on the maturity date. The interest rate is adjustable and is the greater of (i) 7.95% and (ii) 7.95% plus the prime rate less
3.25% per annum. Under the 2021 Restated Facility, the Company owes a back-end fee of $2.5 million on June 1, 2023 and
a back-end fee of $4.85 million on the maturity date.

The amortized cost (including interest due presented as part of accrued expenses and other current liabilities) of
the 2021 Restated Facility was $103.8 million as of December 31, 2022, compared to an amortized cost of $101.6 million
for  the  2021  Restated  Facility  as  of  December  31,  2021,  and  is  recorded  net  of  discount  and  debt  issuance  costs.  The
foreign currency loss on the loan was $5.8 million in 2022 (2021: loss of $5.3 million; 2020: gain of $3.1 million). The fair
value of the loan approximates its carrying amount. Inputs to the fair value of the loan are considered Level 3 inputs.

Interest expense recorded during the years ended December 31 was as follows:

Years

2022
2021
2020

$

Amount
(in millions)

11.5
7.2
3.7

As a covenant in the 2021 Restated Facility the Company has periodic reporting requirements and is required to
keep a minimum cash balance deposited in bank accounts in the United States, equivalent to the lesser of (i) 65% of the
outstanding balance of principal due or (ii) 100% of worldwide cash and cash equivalents. This restriction on cash and cash
equivalents only relates to the location of the cash and cash equivalents, and such cash and cash equivalents can be used at
the  discretion  of  the  Company.  Following  the  approval  of  the  BLA  by  the  FDA  for  AMT-061  in  November  2022,  the
Company,  beginning  on  April  1,  2024,  is  required  to  keep  a  minimum  of  unrestricted  cash  of  at  least  30%  of  the  loan
amount  outstanding.  In  combination  with  other  covenants,  the  2021  Restated  Facility  restricts  the  Company’s  ability  to,
among other things, incur future indebtedness and obtain additional debt financing, to make investments in securities or in
other  companies,  to  transfer  assets,  to  perform  certain  corporate  changes,  to  make  loans  to  employees,  officers,  and
directors, and to make dividend payments and other distributions to its shareholders. The Company secured the facilities by
directly  or  indirectly  pledging  its  total  assets  of  $705.0  million  with  the  exception  of  $63.7  million  of  cash  and  cash
equivalents and other current assets held by uniQure N.V and $85.2 million of other current assets and investment held by
Corlieve Therapeutics SAS.

The 2021 Restated Facility contain provisions that include the occurrence of a material adverse effect, as defined
therein,  which  would  entitle  Hercules  to  declare  all  principal,  interest  and  other  amounts  owed  by  the  Company
immediately due and payable. As of December 31, 2022, the Company was in material compliance with all covenants and
provisions.

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The aggregate maturities of the loans, including $44.5 million of coupon interest payments and financing fees, for

each of the 35 months after December 31, 2022, are as follows:

Years

2023
2024
2025
Total

13.          Shareholders’ equity

Amount
(in thousands)

14,870
12,403
117,219
144,492

$

$

As of December 31, 2022, the Company’s authorized share capital is €4.0 million (or $4.3 million when translated
at  an  exchange  rate  as  of  December  31,  2022,  of  $1.07  /  €1.00),  divided  into  80,000,000  ordinary  shares,  each  with  a
nominal value of €0.05. The Company’s shareholders, at the 2021 Annual General Meeting of Stockholders held on June
16, 2021, approved an increase in the number of authorized ordinary shares by 20,000,000 to 80,000,000.

All ordinary shares issued by the Company were fully paid. Besides the minimum amount of share capital to be

held under Dutch law, there are no distribution restrictions applicable to the equity of the Company.

As  of  December  31,  2022,  and  2021  and  2020  the  Company’s  other  comprehensive  result  was  restricted  for
payment  of  dividends  for  an  accumulated  other  comprehensive  loss  of  $58.3  million  in  2022,  an  accumulated  other
comprehensive loss of $28.9 million in 2021, and an accumulated other comprehensive gain of $9.9 million in 2020.

On March 1, 2021, the Company entered into a Sales Agreement with SVB Leerink LLC (“SVB Leerink”) with
respect  to  an  at-the-market  (“ATM”)  offering  program,  under  which  the  Company  may,  from  time  to  time  in  its  sole
discretion,  offer  and  sell  through  SVB  Leerink,  acting  as  agent,  its  ordinary  shares,  up  to  an  aggregate  offering  price  of
$200.0 million. The Company will pay SVB Leerink a commission equal to 3% of the gross proceeds of the sales price of
all ordinary shares sold through it as sales agent under the Sales Agreement. In March and April 2021, the Company issued
an  aggregate  of  921,730  ordinary  shares  at  a  weighted  average  price  of  $33.52  per  ordinary  share,  with  net  proceeds  of
$29.6  million,  after  deducting  underwriting  discounts  and  net  of  offering  expenses.  The  Company  defers  direct,
incremental  costs  associated  to  this  offering,  except  for  the  commission  costs  to  SVB  Leerink,  which  are  a  reduction  to
additional  paid-in  capital,  and  will  deduct  these  costs  from  additional  paid-in  capital  in  the  consolidated  balance  sheets
proportionately  to  the  amount  of  proceeds  raised.  During  the  year  ended  December  31,  2021,  $1.3  million  of  direct,
incremental costs were deducted from additional paid-in capital (nil for the year ended December 31, 2022).

Following  the  Closing  of  the  CSL  Behring  transaction,  the  Company  consumed  its  tax  net  operating  loss
carryforwards  from  the  years  2011  to  2018.  The  Company  allocated  the  tax  benefit  from  the  release  of  the  valuation
allowance related to net operating loss carryforwards generated by share issuance costs incurred in 2014, 2015, 2017 and
2018 to additional paid-in capital. This resulted is an increase of additional paid-in capital of $3.0 million in the year ended
December 31, 2021.

The Company recorded $0.8 million increase of additional paid-in capital in the year ended December 31, 2022
resulting  from  the  release  of  valuation  allowance  for  the  tax  benefit  of  share  issuance  costs  incurred  in  2018,  2019  and
2021 within the Netherlands.

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14.          Share-based compensation

Share-based  compensation  expense  recognized  by  classification  included  in  the  consolidated  statements  of

operations and comprehensive loss was as follows:

Cost of manufacturing services revenue
Research and development
Selling, general and administrative
Total

$

$

2022

323
18,402
15,479
34,204

Year ended December 31, 
2021
(in thousands)
$

— $

12,834
12,801
25,635

$

$

2020

—
11,995
9,836
21,831

Share-based compensation expense recognized by award type was as follows:

Award type/ESPP
Share options
Restricted share units
Performance share units
Employee share purchase plan
Total

2022

Year ended December 31, 
2021
(in thousands)

2020

$

$

13,425
15,486
5,267
26
34,204

$

$

12,477
11,347
1,783
28
25,635

$

$

11,434
7,364
2,990
43
21,831

As  of  December  31,  2022,  the  unrecognized  compensation  cost  related  to  unvested  awards  under  the  various

share-based compensation plans were:

Award type
Share options
Restricted share units
Performance share units
Total

     Unrecognized    Weighted average

share-based     
compensation
expense

remaining
period for
     recognition     

(in thousands)

(in years)

$

$

24,420
24,924
184
49,528

2.48
1.90
0.14
2.18

The  Company  satisfies  the  exercise  of  share  options  and  vesting  of  Restricted  Share  Units  (“RSUs”)  and

Performance Share Units (“PSUs”) through newly issued ordinary shares.

The Company’s share-based compensation plans include the 2014 Amended and Restated Share Option Plan (the
“2014 Plan”) and inducement grants under Rule 5653(c)(4) of The Nasdaq Global Select Market with terms similar to the
2014 Plan (together the “2014 Plans”). The Company previously had a 2012 Equity Incentive Plan (the “2012 Plan”). As of
December 31, 2022, no fully vested share options are outstanding (December 31, 2021: 14,000) under the 2012 Plan.

At the general meeting of shareholders on January 9, 2014, the Company’s shareholders approved the adoption of
the 2014 Plan. At the annual general meetings of shareholders in June 2015, 2016, 2018 and 2021, uniQure shareholders
approved  amendments  of  the  2014  Plan,  increasing  the  shares  authorized  for  issuance  by  1,070,000  shares  in  2015,
3,000,000 in 2016, 3,000,000 shares in 2018 and 4,000,000 shares in 2021 for a total of 12,601,471 shares.

Share options

Share options are priced on the date of grant and, except for certain grants made to non-executive directors, vest
over a period of four years. The first 25% vests after one year from the initial grant date and the remainder vests in equal
quarterly installments over years two, three and four. Certain grants to non-executive directors vest in full after one year.
Any options that vest must be exercised by the tenth anniversary of the initial grant date.

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2014 Plan

The following tables summarize option activity under the Company’s 2014 Plans for the year ended December 31,

2022:

Number of
     ordinary shares     

Weighted average
exercise price

Weighted average
     remaining contractual life     

Aggregate intrinsic
value

Options

Outstanding at December 31, 2021
Granted
Forfeited
Expired
Exercised
Outstanding at December 31, 2022
Thereof, fully vested and exercisable on
December 31, 2022
Thereof, outstanding and expected to vest
after December 31, 2022
Outstanding and expected to vest after
December 31, 2021

$
3,308,325
1,426,966
$
(204,224) $
(154,794) $
(138,356) $
4,237,917
$

2,139,360

2,098,557

1,521,500

$

$

$

31.02
15.90
38.29
36.86
7.81
26.13

28.82

23.38

38.71

in years

7.05

$

(in thousands)
8,660

7.14

5.45

8.86

17,848

8,339

9,509

Total weighted average grant date fair value of options issued
during the period (in $ millions)
Granted to directors and officers during the period (options,
grant date fair value $ in millions)
Proceeds from option sales during the period (in $ millions)

672,908

$

$
$

12.9

5.9
1.3

The following table summarizes information about the weighted average grant-date fair value of options during

the years ended December 31:

Granted, 2022
Granted, 2021
Granted, 2020
Vested, 2022
Forfeited, 2022

     Weighted average

Options
1,426,966
1,174,893
653,852
652,635
(204,224)

grant‑date fair value
9.04
$
20.95
28.08
22.27
22.17

The  following  table  summarizes  information  about  the  weighted  average  grant-date  fair  value  of  options  at

December 31:

Outstanding and expected to vest, 2022
Outstanding and expected to vest, 2021

Options
2,098,557
1,521,500

     Weighted average

grant‑date fair value
13.46
$
22.52

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The fair value of each option issued is estimated at the respective grant date using the Hull & White option pricing

model with the following weighted-average assumptions:

Assumptions
Expected volatility
Expected terms
Risk free interest rate
Expected dividend yield

2022
70%
10 years
2.12% - 4.16%
0%

Year ended December 31, 
2021
75%
10 years
1.21 - 1.86%
0%

2020
70%
10 years
0.76% - 1.44%
0%

The Hull & White option model captures early exercises by assuming that the likelihood of exercises will increase
when the share price reaches defined multiples of the strike price. This analysis is performed over the full contractual term.

The following table summarizes information about options exercised during the years ended December 31:

2022
2021
2020

Restricted Share Units

     Exercised

during the year

138,356
241,496
498,678

Intrinsic value
(in thousands)
1,848
$
5,046
11,927

The following table summarizes the RSU activity for the year ended December 31, 2022:

RSU
     Weighted average

Non-vested at December 31, 2021
Granted
Vested
Forfeited
Non-vested at December 31, 2022

Number of
ordinary shares
710,617
1,604,533
(292,688)
(203,688)
1,818,774

Total weighted average grant date fair value of RSUs granted during the period (in $
millions)
Granted to directors and officers during the period (shares, $ in millions)

380,288

grant-date fair
value

$
$
$
$
$

$
$

38.89
16.10
39.31
23.39
20.46

25.8
6.0

The  following  table  summarizes  information  about  the  weighted  average  grant-date  fair  value  of  RSUs  granted

during the years ended December 31:

2022
2021
2020

Granted
during the year
1,604,533
574,921
376,799

     Weighted average

grant‑date fair value
16.10
$
36.14
48.18

The following table summarizes information about the total fair value of RSUs that vested during the years ended

December 31:

2022
2021
2020

$

Total fair value
(in thousands)
5,104
8,063
12,156

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RSUs generally vest over one to three years. RSUs granted to non-executive directors will vest one year from the

date of grant.

Performance Share Units

The following table summarizes the PSU activity for the year ended December 31, 2022:

Non-vested at December 31, 2021
Granted
Vested
Forfeited
Non-vested at December 31, 2022

PSU
     Weighted average

Number of
ordinary shares
$
632,930
34,700
$
(213,145) $
(53,795) $
400,690
$

grant-date fair
value

33.54
15.11
40.46
29.35
28.82

Total weighted average grant date fair value of PSUs granted
during the period (in $ millions)

$

0.5

The Company granted shares to certain employees in September and December 2021 and various dates during the
year ended December 31, 2022 that will be earned upon achievement of defined milestones. Earned shares will vest upon
the later of a minimum service period of one year or three years, or the achievement of defined milestones, subject to the
grantee’s continued employment. In addition, portions of the December 2021 granted to executives and other members of
senior  management  are  subject  to  achieving  a  minimum  total  shareholder  return  relative  to  the  Nasdaq  biotechnology
index. The Company recognizes the compensation cost related to these grants to the extent it considers achievement of the
milestones to be probable. Achievement of one of the total five defined milestones was met and one of the five defined
milestones was considered probable as of December 31, 2022.

In January 2018 and January and February 2019, the Company awarded PSUs to its executives and other members
of senior management. These PSUs were earned in January 2019 and January 2020, based on the Board of Directors’ (the
“Board”)  assessment  of  the  level  of  achievement  of  agreed  upon  performance  targets  through  December  31,  2018,  and
December 31, 2019, respectively. The PSUs awarded for the year ended December 31, 2018 vested in February 2021 and
the PSUs awarded for the year ended December 31, 2019 vested in January 2022.

The  following  table  summarizes  information  about  the  weighted  average  grant-date  fair  value  of  the  PSUs

determined as of the date those were earned for the 2019 PSUs, and the date of the grant for the 2021 and 2022 PSUs:

2022
2021
2020

     Granted

     Weighted average

during the year
34,700
555,600
91,003

grant‑date fair value
15.11
$
30.19
$
57.56
$

The following table summarizes information about the total fair value of PSUs that vested during the years ended

December 31:

2022
2021
2020

$

Total fair value
(in thousands)
4,450
5,074
21,852

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Employee Share Purchase Plan (“ESPP”)

In June 2018, the Company’s shareholders adopted and approved an ESPP allowing the Company to issue up to
150,000 ordinary shares. The ESPP is intended to qualify under Section 423 of the Internal Revenue Code of 1986. Under
the ESPP, employees are eligible to purchase ordinary shares through payroll deductions, subject to any plan limitations.
The purchase price of the shares on each purchase date is equal to 85% of the lower of the closing market price on the
offering date or the closing market price on the purchase date of each three-month offering period. During the year ended
December 31, 2022, 11,242 shares have been issued (December 31, 2021: 4,724 and December 31, 2020: 6,181). As of
December 31, 2022, a total of 116,060 ordinary shares remain available for issuance under the ESPP plan.

15.          Expenses by nature

Operating expenses excluding expenses presented in other expenses included the following expenses by nature:

Employee-related expenses
Laboratory and development expenses
Office and housing expenses
Legal and advisory expenses
Other operating expenses
Patent and license expenses
Depreciation and amortization expenses
Fair value loss - Corlieve contingent consideration
Total

$

2020

2022

Years ended December 31, 
2021
(in thousands)
96,161
$
36,014
14,638
24,767
10,528
3,748
7,299
6,683
$ 199,838

75,926
35,977
13,388
17,370
8,772
2,899
10,648
-
$ 164,980

$ 119,903
65,964
17,612
15,782
8,510
9,548
8,250
7,081
$ 252,650

Details of employee-related expenses for the years ended December 31 are as follows:

Wages and salaries
Share-based compensation expenses
Social security costs
Health insurance
Contractor expenses
Other employee expenses
Pension costs - defined contribution plans
Total

16.

Other income

$

$

2022

Years ended December 31, 
2021
(in thousands)
53,078
$
25,635
4,496
3,161
3,170
4,570
2,051
96,161

63,704
33,881
5,179
4,148
3,959
6,365
2,667
$ 119,903

$

$

2020

40,919
21,831
4,068
2,271
2,423
2,635
1,779
75,926

Other  income  during  the  year  ended  December  31,  2022  was $7.2  million  compared  to  $12.3  million  and  $3.3

million during the same periods in 2021 and 2020, respectively.

Other  income  in  2022,  2021  and  2020  includes  income  from  payments  received  from  European  authorities  to
subsidize the Company’s research and development efforts in the Netherlands. The amount recognized in the year ended
December 31, 2022 was $5.6 million compared to $5.3 million in 2021 and $1.9 million in 2020.

In addition, other income included $2.6 million of employee retention credits received under the U.S. Coronavirus
Aid, Relief, and Economic Security Act, during the year ended December 31, 2021. No such income was received in the
years ended December 31, 2022 or December 31, 2020.

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An  additional  $3.0  million  of  other  income  was  recorded  in  the  year  ended  December  31,  2021,  related  to  the
receipt by the Company of 69,899 shares of VectorY B.V. in conjunction with a settlement agreement that the Company
and VectorY B.V. entered into in April 2021. In the year ended December 31, 2022, the Company recognized $0.3 million
of other income related to the equity stake received in VectorY. No such income was recorded in the year ending December
31, 2020.

In 2022, 2021 and 2020 the Company’s other income also consisted of income from the subleasing of a portion of

the Amsterdam facility while other expense consists of expenses incurred in relation to the subleasing income.

17.         Income taxes

a.           Income tax (benefit) / expense

Due to the uncertainty surrounding the realization of favorable tax attributes in future tax returns, the Company
has  recorded  a  valuation  allowance  against  the  Company’s  net  deferred  tax  assets  in  the  Netherlands.  The  Company
released a full valuation allowance against the Company’s net deferred tax assets in the United States as of December 31,
2020.

In connection with the Corlieve acquisition, the Company recognized a deferred tax liability related to acquired
identifiable intangible assets and a deferred tax asset for net operating tax loss carryforwards for a net of EUR 11.9 million
($14.2 million) as of the Acquisition Date.

There are no significant unrecognized tax benefits as of December 31, 2022 and 2021.

For  the  years  ended  December  31,  2022,  2021  and  2020,  (loss)  /  income  before  income  tax  benefit  /  (expense)

consists of the following:

Dutch operations
U.S. operations
Other
Total

$

$

2022

Years ended December 31, 
2021
(in thousands)
348,400
(12,737)
(2,857)
332,806

(96,872) $
(14,934)
(16,453)
(128,259) $

$

$

2020

(130,493)
(10,950)
—
(141,443)

The  income  tax  benefit  /  (expense)  for  the  years  ended  December  31,  2022,  2021  and  2020,  consists  of  the

following:

2022

Years ended December 31, 
2021
(in thousands)

2020

Current tax (expense)

Other
     Total current tax (expense)
Deferred tax benefit / (expense)

Dutch operations
U.S. operations
Other
     Total deferred tax benefit / 
(expense)

Total income tax benefit /
(expense)

$
$

$

$

$

(24)
(24)

(808)
(1,075)
3,377

1,494

1,470

$
$

$

$

$

135

(7)
(7)

(3,047)
(771)
608

(3,210)

(3,217)

$
$

$

$

$

—
—

—
16,419
—

16,419

16,419

    
    
    
 
 
 
    
    
    
 
 
 
 
 
 
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b.           Tax rate reconciliation

The  reconciliation  of  the  amount  of  income  tax  benefit  /  (expense)  that  would  result  from  applying  the  Dutch
statutory income tax rate to the Company’s reported amount of (loss) / income before income tax benefit / (expense) for the
years ended December 31, 2022, 2021 and 2020, is as follows:

(Loss) / income before income tax benefit / (expense) for the period
Expected income tax benefit / (expense) at the tax rate enacted in the Netherlands
(2022: 25.8%, 2021: 25.0%, 2020: 25.0%)
Non-deductible expenses
Other net change in valuation allowance
Difference in tax rates between the Netherlands and the U.S. as well as other
foreign countries
Release of valuation allowance related to expected future taxable income of U.S.
operations
Income tax benefit / (expense)

2022

Years ended December 31, 
2021
(in thousands)
$ (128,259) $ 332,806 $ (141,443)

2020

33,091  
(11,129)  
(20,591)  

(83,201)  
(9,182)  
88,857  

35,361
(5,041)
(30,568)

99  

309  

247

—

—

$

1,470 $ (3,217) $

16,419
16,419

Non-deductible  expenses  predominantly  relate  to  share-based  compensation  expenses.  These  expenses  affected
the effective tax rate by an amount of $8.5 million in 2022 (2021: $6.7 million; 2020: $5.8 million). The fair value loss on
contingent consideration affected the effective tax rate by an amount of $1.9 million in 2022 ($2.0 million and nil in 2021
and 2020, respectively).

c.           Significant components of deferred taxes

The  tax  effects  of  temporary  differences  and  carryforwards  that  give  rise  to  significant  portions  of  deferred  tax

assets and deferred tax liabilities as of December 31, 2022 and 2021 are as follows:

     Years ended December 31, 

2022

2021

(in thousands)

Deferred tax assets:
Net operating loss carryforwards
Operating lease liabilities
Intangible assets
Accrued expenses and other current liabilities
Property, plant and equipment
Inventory
Research and development tax credit carryforwards
Interest carryforwards
Total deferred tax assets
Less valuation allowance
Deferred tax assets, net of valuation allowance
Acquired IPR&D Intangible Asset
Operating lease right-of-use assets
Other current assets and receivables
Deferred tax liability
Net deferred tax asset

136

$

84,633
10,612
3,826
1,862
510
—
144
3,697
$ 105,284
(74,547)
30,737
(15,033)
(9,323)
(110)
$ (24,466)
6,271
$

$

$

71,917
9,300
2,039
1,312
971
148
105
—
85,792
(60,289)
25,503
(15,189)
(7,493)
(87)
$ (22,769)
2,734
$

$

$

    
 
 
 
 
 
   
  
 
 
 
 
 
 
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Changes in the valuation allowance were as follows:

Years ended December 31, 

2022

2021

2020

January 1,
Changes recorded in the statement of operations
Changes recorded in equity
Increase related to 2021 and 2020 Dutch tax reforms
Valuation allowance assumed in Corlieve acquisition
Release of valuation allowance related to expected current year and future
periods recorded in profit and loss
Other changes including currency translation adjustments
December 31,

$

$

60,289
20,593
(972)

(in thousands)
150,113
$
(88,858)
—
1,897
545

—  
—

—
(5,363)
74,547

$

—
(3,408)
60,289

$

$

109,856
30,568
—
18,287
—

(16,419)
7,821
150,113

The Company released the full valuation allowance against the Company’s net deferred assets in the United States
as of December 31, 2020. Included within changes recorded in the statement of operations for the year ended December 31,
2020 are benefits of $1.2 million from the utilization of U.S. net operating loss carryforwards.

The valuation allowance as of December 31, 2022 is primarily related to net operating loss carryforwards in the

Netherlands.

Netherlands

As of December 31, 2022, the total amount of net operating losses carried forward under the Dutch tax regime
was $264.0 million (December 31, 2021: $228.5 million, 2020: $588.2 million). The Company has historically recorded a
full valuation allowance. The Company evaluates all positive and negative evidence including future income from the CSL
Behring Agreement in assessing the need for such a full valuation allowance. Management considered reversing taxable
temporary  differences,  projected  future  taxable  income  and  tax-planning  strategies  in  making  this  assessment.  The
Company concluded that as of December 31, 2022, December 31, 2021 and December 31, 2020 it is more likely than not
that the remaining deferred tax assets will not be realized.

The  Company  recorded  $462.4  million  of  license  revenue  in  May  2021  after  the  Closing  of  the  CSL  Behring
transaction. The Company recorded such revenue in its Dutch tax return related to the 12-month period ended December
31,  2020,  which  it  filed  on  February  10,  2022.  As  such,  the  Company  filed  a  return  showing  a  taxable  profit  in  the
Netherlands in 2020, which resulted in the consumption of substantially all of its Dutch net operating losses for the years
2011  to  2018.  The  Company’s  remaining  Dutch  net  operating  tax  losses  carried  forward  relate  to  2019  and  2022.  The
Company allocated the tax benefit from the release of the valuation allowance related to net operating loss carryforwards
generated by share issuance cost incurred in 2014, 2015, 2017 and 2018 to additional paid-in capital. This resulted in an
increase of additional paid-in capital as well as deferred tax expenses of $3.0 million during the year ended December 31,
2021.

The Company recorded $0.8 million increase of additional paid-in capital in the year ended December 31, 2022
resulting  from  the  release  of  valuation  allowance  for  the  tax  benefit  of  share  issuance  costs  incurred  in  2018,  2019  and
2021.

A portion of the valuation allowance for deferred tax assets recorded as of December 31, 2022 continues to relate
to  follow-on  offering  costs  incurred  in  2019.  Any  subsequently  recognized  tax  benefits  will  be  credited  directly  to
contributed capital. As of December 31, 2022, that amount was $3.3 million ($4.5 million as of December 31, 2021).

The Dutch corporate tax rate for fiscal years 2020 and 2021 was 25.0%. In December 2021, further changes were

enacted that raised the corporate income tax rate from 25.0% to 25.8% from 2022 onwards.

In  June  2021  legislation  was  enacted  allowing  for  an  indefinite  carryforward  from  fiscal  year  2022  onwards  of
existing  and  future  net  operating  loss  carryforwards  subject  to  a  limit  of  offsetting  taxable  profit  in  excess  of  EUR  1.0
million to 50% of the taxable profit.

The fiscal periods from 2020 onwards are still open for inspection by the Dutch tax authorities.

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United States of America

The  federal  corporate  tax  rate  in  the  U.S.  is  21.0%.  In  addition,  the  Company  is  subject  to  state  income  taxes
resulting in a combined tax rate of 27.32% for its U.S. operation. As of December 31, 2022, an estimated $38.5 million of
net operating losses remain to be carried forward. These losses will expire between 2035 and 2037.

The Company’s U.S. operations generated taxable income in the fiscal years 2018 to 2022. The Company expects

to continue to generate taxable income in the U.S. during the foreseeable future.

Under the provision of the Internal Revenue Code, the U.S. net operating losses may become subject to an annual
limitation in the event of certain cumulative exchange in the ownership interest of significant shareholders over a three-
year period in excess of 50 percent, as defined under Section 382 and 383 of the Internal Revenue Code. This could limit
the amount of tax attributes that can be utilized annually to offset future taxable income or tax liabilities. The amount of the
annual limitation is determined based on the value of the Company immediately prior to the ownership change. Subsequent
ownership changes may further affect the limitation.

The fiscal periods from 2019 are still open for inspection by the Internal Revenue Service (“IRS”). To the extent
the Company has tax attribute carryforwards, the tax years in which the attribute was generated may still be adjusted upon
examination by the IRS or Massachusetts Department of Revenue to the extent utilized in a future period. The Company is
currently not under examination by the IRS for any tax years.

France

The French corporate tax rate for fiscal year 2022 was 25%. In addition, the Company is subject to a surcharge of

3.3% of the 25.0% standard corporate tax rate resulting in a combined rate of 25.8%.

The Company’s French operation has incurred losses since incorporation and is expected to continue incurring tax

losses for the foreseeable future.

The French operation as of December 31, 2022 has an estimated $23.3 million of taxable losses that are available

for carry forward indefinitely.

18.          Basic and diluted earnings per share

Basic  net  (loss)  /  income  per  ordinary  share  is  computed  by  dividing  net  (loss)  /  income  for  the  period  by  the
weighted  average  number  of  ordinary  shares  outstanding  during  the  period.  Diluted  earnings  per  ordinary  share  are
calculated by adjusting the weighted average number of ordinary shares outstanding, assuming conversion of all potentially
dilutive ordinary shares. For the year ended December 31, 2021, dilutive net income / (loss) per ordinary share is computed
using the treasury method. As the Company has incurred a loss in the years ended December 31, 2022 and December 31,
2020, all potentially dilutive ordinary shares for these years would have an antidilutive effect, if converted, and thus have
been excluded from the computation of loss per share for the years ended December 31, 2022 and December 31, 2020.  

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Numerator:
Net (loss) / income attributable to ordinary shares

Denominator:
Weighted-average number of ordinary shares outstanding - basic

Stock options under 2014 Plans and previous plan
Non-vested RSUs and PSUs
Employee share purchase plan

Weighted-average number of ordinary shares outstanding - diluted

2022

Year ended December 31, 
2021
(in thousands, except 
share amounts)

2020

$

(126,789) $
(126,789)

329,589
329,589

$

(125,024)

46,735,045
—
—
—
46,735,045

45,986,467
746,044
107,162
1,299
46,840,972

44,466,365
—
—
—
44,466,365

The  following  table  presents  ordinary  share  equivalents  that  were  excluded  from  the  calculation  of  diluted  net
income / (loss) per ordinary share for the years ended December 31, 2022, 2021 and 2020 as the effect of their inclusion
would have been anti-dilutive:

Anti-dilutive ordinary share equivalents

Stock options under 2014 Plans and previous plan
Non-vested RSUs and PSUs
Employee share purchase plan

Total anti-dilutive ordinary share equivalents

2022

Year ended December 31, 
2021

2020

4,237,917
2,219,464
1,048
6,458,429

2,576,281
1,236,385
1,842
3,814,508

2,673,279
679,958
560
3,353,797

The anti-dilutive ordinary shares are presented without giving effect to the application of the treasury method or
exercise prices that exceeded the price of the Company’s ordinary shares as of December 31, 2022 and December 31, 2020.

19.          Commitments and contingencies

In  the  course  of  its  business,  the  Company  enters  as  a  licensee  into  contracts  with  other  parties  regarding  the
development and marketing of its pipeline products. Among other payment obligations, the Company is obligated to pay
royalties to the licensors based on future sales levels and milestone payments whenever specified development, regulatory
and  commercial  milestones  are  met.  As  both  future  sales  levels  and  the  timing  and  achievement  of  milestones  are
uncertain, the financial effect of these agreements cannot be estimated reliably. The Company also has obligations to make
future  payments  that  become  due  and  payable  upon  the  collection  of  milestone  payments  from  CSL  Behring.  The
achievement and timing of these milestones is not fixed and determinable. Relevant commitments and contingencies are
further discussed in other sections of this form 10-K, such as, Note 3 “Corlieve transaction” and Note 4 “Collaboration
arrangements and concentration of credit risk”, amongst others.

20.        Related party transaction

Between June 2015 and December 2020, BMS was considered a related party due to the combination of its equity
investment in the Company, the warrants as well as the potential obligations arising from the expansion of collaboration
targets.  On  December  1,  2020,  the  Company  entered  into  the  amended  BMS  CLA.  All  transactions  subsequent  to  the
effective date of the amended BMS CLA are considered to no longer be with a related party due to the elimination of the
potential  obligations  related  to  additional  Collaboration  Targets  (see  Note  4  “Collaboration  arrangements  and
concentration of credit risk”) as well as the elimination of the BMS warrants (see Note 7, “Fair value measurement”).

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21.         Subsequent events

On  January  31,  2023,  the  Company  announced  that  it  had  entered  into  a  global  licensing  agreement  for  a  gene
therapy  for  amyotrophic  lateral  sclerosis  caused  by  mutations  in  superoxide  dismutase  1  with  Apic  Bio.  The  Company
made  an  initial  cash  payment  of  $10.0  million.  In  addition,  the  Company  will  pay  Apic  Bio  up  to  $43.0  million  in
milestones  upon  achievement  of  regulatory  approvals  in  the  U.S.  and  Europe  and  pre-specified  annual  net  sales,  and  a
tiered royalty on net sales ranging from the mid-single digits to low double digits.

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Exhibit
No.

EXHIBIT INDEX

Description

2.1† Sale  and  Purchase  Agreement,  executed  June  21,  2021,  by  and  between  uniQure  N.V.  and  Corlieve
Therapeutics SAS (incorporated by reference to Exhibit 2.1 of the Company’s quarterly report on Form
10-Q (file no. 001-36294) for the period ending on June 30, 2021 filed with the Securities and Exchange
Commission).

3.1 Amended  Articles  of  Association  of  the  Company  (incorporated  by  reference  to  Exhibit  3.1  of  the
Company’s quarterly report on Form 10-Q (file no. 001-36294) for the period ending on June 30, 2021
filed with the Securities and Exchange Commission).

4.1* Description  of  the  Registrant’s  Securities  Registered  Pursuant  to  Section  12  of  the  Securities  Exchange

Act of 1934.

10.1t 2014  Share  Incentive  Plan  (incorporated  by  reference  to  Exhibit  4.3  of  the  Company's  registration
statement on Form S-8 (file no. 333-225629) filed with the Securities and Exchange Commission).

10.2t Form  of  Inducement  Share  Option  Agreement  under  2014  Share  Incentive  Plan  (incorporated  by
reference  to  Exhibit  10.2  of  the  Company's  annual  report  on  Form  10-K  (file  no.  001-36294)  for  the
period ending December 31, 2016 filed with the Securities and Exchange Commission).

10.3t Form of Share Option Agreement under 2014 Share Incentive Plan (incorporated by reference to Exhibit
10.3 of the Company's annual report on Form 10-K (file no. 001-36294) for the period ending December
31, 2016 filed with the Securities and Exchange Commission).

10.4t Form of Restricted Stock Unit Award under the 2014 Share Incentive Plan (incorporated by reference to
Exhibit  10.4  of  the  Company's  annual  report  on  Form  10-K  (file  no.  001-36294)  for  the  period  ending
December 31, 2017 filed with the Securities and Exchange Commission).

10.6t Employment  Agreement  dated  December  9,  2014  between  uniQure,  Inc.  and  Matthew  Kapusta
(incorporated by reference to Exhibit 10.6 of the Company's annual report on Form 10-K (file no. 001-
36294) for the period ending December 31, 2016 filed with the Securities and Exchange Commission).

10.7t Amendment  to  the  Employment  Agreement  between  uniQure,  Inc.  and  Matthew  Kapusta,  dated  March
14, 2017 (incorporated by reference to Exhibit 10.7 of the Company's annual report on Form 10-K (file
no.  001-36294)  for  the  period  ending  December  31,  2016  filed  with  the  Securities  and  Exchange
Commission).

10.8t Amendment to the Employment Agreement between uniQure, Inc. and Matthew Kapusta, dated October
26, 2017 (incorporated by reference to Exhibit 10.1 of the Company’s quarterly report on Form 10-Q (file
no.  001-36294)  for  the  period  ending  on  September  31,  2017  filed  with  the  Securities  and  Exchange
Commission).

10.18 Lease  relating  to  113  Hartwell  Avenue,  Lexington,  Massachusetts,  dated  as  of  July  24,  2013,  by  and
between  the  Company  and  King113  Hartwell  LLC  (incorporated  by  reference  to  Exhibit  10.28  of  the
Company's  registration  statement  on  Form  F-1  (file  no.  333-193158)  filed  with  the  Securities  and
Exchange Commission).

10.19 Business  Acquisition  Agreement,  dated  as  of  February  16,  2012,  by  and  among  Amsterdam  Molecular
Therapeutics  (AMT)  Holding  N.V.,  the  Company  and  the  other  Parties  listed  therein  (incorporated  by
reference  to  Exhibit  10.29  of  the  Company's  registration  statement  on  Form  F-1  (file  no.  333-193158)
filed with the Securities and Exchange Commission).

10.20 Deed  of  Assignment  of  Certain  Assets  and  Liabilities  of  Amsterdam  Molecular  Therapeutics  (AMT)
Holding  N.V.,  dated  as  of  April  5,  2012,  by  and  among  Amsterdam  Molecular  Therapeutics  (AMT)
Holding  B.V.,  Amsterdam  Molecular  Therapeutics  (AMT)  Holding  IP  B.V.  and  Amsterdam  Molecular
Therapeutics  (AMT)  Holding  N.V.  (incorporated  by  reference  to  Exhibit  10.30  of  the  Company's
registration  statement  on  Form  F-1  (file  no.  333-193158)  filed  with  the  Securities  and  Exchange
Commission).

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10.21

10.27†

10.29†

10.32

10.36t

10.37†

10.40

10.41t

10.42

10.43

10.44t

10.49t

Agreement for Transfer of Certain Assets and Liabilities of Amsterdam Molecular Therapeutics
(AMT)  Holding  N.V.,  dated  as  of  February  16,  2012,  by  and  among  Amsterdam  Molecular
Therapeutics  (AMT)  Holding  B.V.,  Amsterdam  Molecular  Therapeutics  (AMT)  Holding  IP
B.V. and Amsterdam Molecular Therapeutics (AMT) Holding N.V. (incorporated by reference
to  Exhibit  10.31  of  the  Company's  registration  statement  on  Form  F-1  (file  no.  333-193158)
filed with the Securities and Exchange Commission).

Collaboration  and  License  Agreement  by  and  between  uniQure  Biopharma  B.V.  and  Bristol-
Myers Squibb Company dated April 6, 2015 (incorporated by reference to Exhibit 4.30 of the
Company's  annual  report  on  Form  20-F  (file  no.  001-36294)  filed  with  the  Securities  and
Exchange Commission).

Investor  Agreement  by  and  between  uniQure  Biopharma  B.V.  and  Bristol-Myers  Squibb
Company  dated  April  6,  2015  (incorporated  by  reference  to  Exhibit  4.32  of  the  Company's
annual  report  on  Form  20-F  (file  no.  001-36294)  filed  with  the  Securities  and  Exchange
Commission).

Lease relating to Paasheuvelweg 25, dated as of March 7, 2016, by and between 52 IFH GmbH
&  Co.  KG  and  uniQure  biopharma  B.V.  (incorporated  by  reference  to  Exhibit  10.36  of  the
Company's annual report on Form 10-K (file no. 001-36294) for the period ending December
31, 2016 filed with the Securities and Exchange Commission).

Employment  Agreement  dated  July  15,  2017  between  uniQure  biopharma  B.V.  and  Christian
Klemt (incorporated by reference to Exhibit 10.4 of the Company’s quarterly report on Form
10-Q (file no. 001-36294) for the period ending on June 30, 2017 filed with the Securities and
Exchange Commission).

Assignment and License Agreement dated April 17, 2017 between Professor Paolo Simioni and
uniQure biopharma B.V. (incorporated by reference to Exhibit 10.1 of the Company’s periodic
report  on  Form  8-K  (file  no.  001-36294)  filed  on  October  19,  2017  with  the  Securities  and
Exchange Commission).

First Amendment Lease relating to 113 Hartwell Avenue, Lexington, Massachusetts, dated as of
July  24,  2013,  by  and  between  the  Company  and  King113  Hartwell  LLC  (incorporated  by
reference  to  Exhibit  10.1  of  the  Company's  current  report  on  form  8-K  (file  no.  001-36294)
filed with the Securities and Exchange Commission) filed on November 15, 2018.

Employee  Share  Purchase  Plan  (incorporated  by  reference  to  Exhibit  4.2  of  the  Company's
registration  statement  on  Form  S-8  (file  no.  333-225629)  filed  with  the  Securities  and
Exchange Commission) filed on June 14, 2018.

Second Amendment Lease relating to 113 Hartwell Avenue, Lexington Massachusetts, dated as
of June 17, 2019, by and between the Company and King 113 Hartwell LLC (incorporated by
reference  to  Exhibit  10.42  of  the  Company’s  quarterly  report  on  Form  10-Q  (file  no.  001-
36294)  for  the  period  ending  on  June  30,  2019  filed  with  the  Securities  and  Exchange
Commission).

Form of Share Option Agreement, effective June 18, 2019, under the 2014 Share Incentive Plan
(incorporated by reference to Exhibit 10.43 of the Company’s quarterly report on Form 10-Q
(file  no.  001-36294)  for  the  period  ending  on  June  30,  2019  filed  with  the  Securities  and
Exchange Commission).

Amended  and  Restated  Employment  Agreement,  executed  September  17,  2019,  by  and
between  the  Company  and  Dr.  Kuta  (incorporated  by  reference  to  Exhibit  10.1  of  the
Company’s  current  report  on  Form  8-K  (file  no.  001-36294)  filed  with  the  Securities  and
Exchange Commission) filed on September 20, 2019.

Amended  and  Restated  Employment  Agreement,  executed  March  1,  2020  by  and  between
uniQure biopharma B.V. and Christian Klemt (incorporated by reference to Exhibit 10.49 of the
Company’s annual report on Form 10-K for the year ended December 31, 2019 (file no. 0001-
36294) filed with the Securities and Exchange commission).

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10.50t

10.53†

10.54t

10.55t

10.56t

10.57†

10.58

10.59

10.60t

10.61t

10.62t

10.63t

Amended  and  Restated  Employment  Agreement,  executed  March  1,  2020  by  and  between
uniQure Inc. and Dr. Robert Gut (incorporated by reference to Exhibit 10.50 of the Company’s
annual report on Form 10-K for the year ended December 31, 2019 (file no. 0001-36294) filed
with the Securities and Exchange commission).

Commercialization and License Agreement by and between uniQure biopharma B.V. and CSL
Behring LLC dated June 24, 2020 (incorporated by reference to Exhibit 10.1 of the Company’s
quarterly report on Form 10-Q (file no. 001-36294) for the period ending on June 30, 2020 filed
with the Securities and Exchange Commission).

Separation agreement, executed August 25, 2020, by and between uniQure biopharma B.V. and
Sander  van  Deventer (incorporated  by  reference  to  Exhibit  10.1  of  the  Company’s  quarterly
report on Form 10-Q (file no. 001-36294) for the period ending on September 30, 2020 filed
with the Securities and Exchange Commission).

Separation agreement, executed August 25, 2020, by and between uniQure Inc. and Robert Gut
(incorporated  by  reference  to  Exhibit  10.2  of  the  Company’s  quarterly  report  on  Form  10-Q
(file no. 001-36294) for the period ending on September 30, 2020 filed with the Securities and
Exchange Commission).

Employment  agreement,  executed  September  14,  2020,  by  and  between  uniQure  Inc.  and
Ricardo  Dolmetsch  (incorporated  by  reference  to  Exhibit  10.3  of  the  Company’s  quarterly
report on Form 10-Q (file no. 001-36294) for the period ending on September 30, 2020 filed
with the Securities and Exchange Commission).

Amendment to Collaboration and License Agreement by and between uniQure biopharma B.V.
and  Bristol-Myers  Squibb  Company  dated  December  1,  2020  (incorporated  by  reference  to
Exhibit 10.57 of the Company’s annual report on Form 10-K for the year ended December 31,
2020 (file no. 0001-36294) filed with the Securities and Exchange commission).

Amendment  No.  2  to  Second  Amended  and  Restated  Loan  and  Security  Agreement  as  of
January 29, 2021, by and among uniQure biopharma B.V., uniQure Inc., uniQure IP B.V., the
Company  and  Hercules  Capital  Inc.  (incorporated  by  reference  to  Exhibit  10.58  of  the
Company’s annual report on Form 10-K for the year ended December 31, 2020 (file no. 0001-
36294) filed with the Securities and Exchange commission).

Cooperation Agreement, dated as of April 16, 2021, by and among uniQure N.V., ForUniqure
B.V.,  Forbion  1  Management  B.V.,  Forbion  International  Management  B.V.,  and  Forbion
Capital Partners Management Holding B.V. (incorporated  by  reference  to  Exhibit  10.1  of  the
Company’s quarterly report on Form 10-Q (file no. 001-36294) for the period ending on March
31, 2021 filed with the Securities and Exchange Commission).

2014 Share Incentive Plan, Amended and Restated, effective as of June 16, 2021 (incorporated
by  reference  to  Exhibit  4.1  of  the  Company’s  quarterly  report  on  Form  10-Q  (file  no.  001-
36294)  for  the  period  ending  on  June  30,  2021  filed  with  the  Securities  and  Exchange
Commission).

Employment Agreement, effective May 17, 2021, by and between uniQure biopharma B.V. and
Pierre Caloz (incorporated by reference to Exhibit 10.1 of the Company’s quarterly report on
Form 10-Q (file no. 001-36294) for the period ending on June 30, 2021 filed with the Securities
and Exchange Commission).

Equity  Side  Letter,  effective  May  17,  2021,  by  and  between  uniQure  N.V.  and  Pierre  Caloz
(incorporated  by  reference  to  Exhibit  10.2  of  the  Company’s  quarterly  report  on  Form  10-Q
(file  no.  001-36294)  for  the  period  ending  on  June  30,  2021  filed  with  the  Securities  and
Exchange Commission).

Amended  and  Restated  Employment  Agreement,  effective  June  15,  2021,  by  and  between
uniQure biopharma B.V. and Christian Klemt (incorporated by reference to Exhibit 10.3 of the
Company’s quarterly report on Form 10-Q (file no. 001-36294) for the period ending on June
30, 2021 filed with the Securities and Exchange Commission).

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10.64

10.65t

10.66t

10.67†t

10.68†

10.69†

10.70†

14.1

21.1*

23.1*

24.1*

31.1*

31.2*

32.1*

Consent  and  Amendment  No.  3  to  Second  Amended  and  Restated  Loan  and  Security
Agreement, dated July 30, 2021, by and among the Registrant, Hercules Capital Inc., and the
other  parties  named  therein  (incorporated  by  reference  to  Exhibit  10.1  of  the  Company’s
quarterly  report  on  Form  10-Q  (file  no.  001-36294)  for  the  period  ending  on  September  30,
2021 filed with the Securities and Exchange Commission).

Form of Share Option Agreement, effective December 8, 2021, under the 2014 Share Incentive
Plan (incorporated by reference to Exhibit 10.65 of the Company’s annual report on Form 10-K
for  the  year  ended  December  31,  2021  (file  no.  001-36294)  filed  with  the  Securities  and
Exchange Commission).

Form  of  Restricted  Stock  Unit  Award,  effective  December  8,  2021,  under  the  2014  Share
Incentive Plan (incorporated by reference to Exhibit 10.66 of the Company’s annual report on
Form 10-K for the year ended December 31, 2021 (file no. 001-36294) filed with the Securities
and Exchange Commission).

Form  of  Performance  Stock  Unit  Award,  effective  December  8,  2021  under  the  2014  Share
Incentive Plan (incorporated by reference to Exhibit 10.67 of the Company’s annual report on
Form 10-K for the year ended December 31, 2021 (file no. 001-36294) filed with the Securities
and Exchange Commission).

Third Amended and Restated Loan and Security Agreement as of December 15, 2021, by and
among  uniQure  biopharma  B.V.,  uniQure  Inc.,  uniQure  IP  B.V.,  the  Company  and  Hercules
Capital  Inc  (incorporated  by  reference  to  Exhibit  10.68  of  the  Company’s  annual  report  on
Form 10-K for the year ended December 31, 2021 (file no. 001-36294) filed with the Securities
and Exchange Commission).

Lease  Agreement  relating  to  20  Maguire  Road,  Lexington,  Massachusetts,  dated  as  of
December  22,  2021,  by  and  between  uniQure  Inc.  and  G&I  IX/GP4  20  Maguire  LLC
(incorporated by reference to Exhibit 10.69 of the Company’s annual report on Form 10-K for
the year ended December 31, 2021 (file no. 001-36294) filed with the Securities and Exchange
Commission).

Lease  Agreement  relating  to  91  Hartwell  Avenue,  Lexington,  Massachusetts,  dated  as  of
February  1,  2022,  by  and  between  uniQure  Inc.  and  NRL  91  Hartwell  LLC  (incorporated  by
reference  to  Exhibit  10.70  of  the  Company’s  annual  report  on  Form  10-K  for  the  year  ended
December 31, 2021 (file no. 001-36294) filed with the Securities and Exchange Commission).

Code of Ethics (incorporated by reference to Exhibit 14.1 of the Company's annual report on
Form  10-K  (file  no.  001-36294)  for  the  period  ending  December  31,  2016  filed  with  the
Securities and Exchange Commission).

Subsidiaries of the Company.

Consent of Independent Registered Public Accounting Firm – KPMG Accountants N.V.

Power of Attorney (incorporated by reference to the signature page of this Annual Report on
Form 10-K).

Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer.

Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer.

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.

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101*

104*

The following materials from the Company’s Annual Report on Form 10-K for the year ended
December  31,  2022,  formatted  in  Inline  XBRL  (eXtensible  Business  Reporting  Language):
(i)  Consolidated  Balance  Sheets, 
(ii)  Consolidated  Statements  of  Operations  and
Comprehensive  Income  (Loss),  (iii)  Consolidated  Statements  of  Shareholders’  Equity,
(iv)  Consolidated  Statements  of  Cash  Flows  and  (v)  Notes  to  Consolidated  Financial
Statements.

The  cover  page  from  the  Company’s  Annual  Report  on  Form  10-K  for  the  year  ended
December 31, 2022, has been formatted in Inline XBRL.

† Confidential treatment requested as to certain portions, which portions have been omitted and filed separately with the

Securities and Exchange Commission

Filed herewith

Indicates a management contract or compensatory plan or arrangement.

*

t

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Table of Contents

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly

caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Date: February 27, 2023

Date: February 27, 2023

UNIQURE, N.V.

By:

By:

/s/ MATTHEW KAPUSTA
Matthew Kapusta
Chief Executive Officer (Principal Executive Officer)

/s/ CHRISTIAN KLEMT
Christian Klemt
Chief Financial Officer (Principal Financial Officer)

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and
appoints  Matthew  Kapusta  and  Christian  Klemt,  jointly  and  severally,  his  or  her  attorney-in-fact,  with  the  power  of
substitution, for him or her in any and all capacities, to sign any amendments to this Annual Report on Form 10-K and to
file  the  same,  with  exhibits  thereto  and  other  documents  in  connection  therewith,  with  the  Securities  and  Exchange
Commission, hereby ratifying and confirming all that each of said attorneys-in-fact, or his or her substitute or substitutes,
may do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this Annual Report on Form 10-K has been

signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

Signatures

Title

Date

/s/ MATTHEW KAPUSTA
Matthew Kapusta

Chief Executive Officer and Director (Principal
Executive Officer)

February 27, 2023

/s/ CHRISTIAN KLEMT
Christian Klemt

/s/ MADHAVAN BALACHANDRAN
Madhavan Balachandran

/s/ ROBERT GUT
Robert Gut

/s/ RACHELLE JACQUES
Rachelle Jacques

/s/ JACK KAYE
Jack Kaye

/s/ DAVID MEEK
David Meek

/s/ LEONARD POST
Leonard Post

/s/ PAULA SOTEROPOULOS
Paula Soteropoulos

/s/ JEREMY P. SPRINGHORN
Jeremy P. Springhorn

Chief Financial Officer (Principal Financial Officer)

February 27, 2023

Director

Director

Director

Director

Director

Director

Director

Director

146

February 27, 2023

February 27, 2023

February 27, 2023

February 27, 2023

February 27, 2023

February 27, 2023

February 27, 2023

February 27, 2023

    
    
DESCRIPTION OF THE REGISTRANT’S SECURITIES
REGISTERED PURSUANT TO SECTION 12 OF THE
SECURITIES EXCHANGE ACT OF 1934

Exhibit 4.1

The following description sets forth certain material terms and provisions of uniQure N.V.’s (“uniQure N.V.”, “we,” “us,” and “our”)
securities  that  are  registered  under  Section  12  of  the  Securities  Exchange  Act  of  1934,  as  amended.  The  description  below  of  our
ordinary shares and provisions of our articles of association are summaries and are qualified by reference to our articles of association
and the applicable provisions of Dutch law.

DESCRIPTION OF CAPITAL STOCK

The  following  description  of  the  general  terms  and  provisions  of  our  ordinary  shares  is  a  summary  only  and  therefore  is  not
complete and is subject to, and qualified in its entirety by reference to, the terms and provisions of our articles of association. Our articles
of association have been filed with the SEC as an exhibit to the Annual Report on Form 10-K of which this Exhibit 4.1 is a part and you
should read the articles for provisions that may be important to you.

Authorized Ordinary Shares

Our articles of association provide an authorized share capital of 80,000,000 ordinary shares, each with a nominal value per share of

€0.05.

Form of Ordinary Shares

We issue our ordinary shares in registered book-entry form and such shares are not certificated.

NASDAQ Global Market Listing

Our ordinary shares are listed on The NASDAQ Global Market under the symbol "QURE."

Comparison of Dutch corporate law and our Articles of Association and Delaware corporate law

The  following  comparison  between  Dutch  corporate  law,  which  applies  to  us,  and  Delaware  corporate  law,  the  law  under  which
many publicly listed companies in the United States are incorporated, discusses additional matters not otherwise described in this exhibit.
This summary is subject to Dutch law, including Book 2 of the Dutch Civil Code and Delaware corporation law, including the Delaware
General Corporation Law.

Corporate governance

Duties of directors

The Netherlands.    We have a one tier board structure consisting of our executive directors and non-executive directors. Under the
one-tier board structure, both the executive and non-executive directors will be collectively responsible for the management performed
by the one-tier board and for the general policy and strategy of a company. The executive directors are responsible for the day-to-day
management  of  a  company.  The  non-executive  directors  are  responsible  for  supervising  the  conduct  of,  and  providing  advice  to,  the
executive directors and for providing supervision with respect to the company's general state of affairs. Each executive director and non-
executive  director  has  a  duty  to  act  in  the  corporate  interest  of  the  company.  Under  Dutch  law,  the  corporate  interest  extends  to  the
interests  of  all  corporate  stakeholders,  such  as  shareholders,  creditors,  employees,  customers  and  suppliers.  The  duty  to  act  in  the
corporate  interest  of  the  company  also  applies  in  the  event  of  a  proposed  sale  or  split-up  of  a  company,  whereby  the  circumstances
generally dictate how such duty is to be applied. Any resolution of the board regarding a significant change in the identity or character of
a company requires shareholders' approval.

Delaware.        The  board  of  directors  bears  the  ultimate  responsibility  for  managing  the  business  and  affairs  of  a  corporation.  In
discharging  this  function,  directors  of  a  Delaware  corporation  owe  fiduciary  duties  of  care  and  loyalty  to  the  corporation  and  to  its
stockholders.  Delaware  courts  have  decided  that  the  directors  of  a  Delaware  corporation  are  required  to  exercise  informed  business
judgment  in  the  performance  of  their  duties.  Informed  business  judgment  means  that  the  directors  have  informed  themselves  of  all
material information reasonably available to them. Delaware courts have also imposed a heightened standard of conduct upon directors
of a Delaware corporation who take any action designed to defeat a threatened change in control of the corporation. In addition, under
Delaware  law,  when  the  board  of  directors  of  a  Delaware  corporation  approves  the  sale  or  break-up  of  a  corporation,  the  board  of
directors may, in certain circumstances, have a duty to obtain the highest value reasonably available to the stockholders.

Director terms

The Netherlands.    Under Dutch law, executive directors of a listed company are generally appointed for a term of a maximum of
four years and reappointed for a term of a maximum of four years at a time. Non-executive directors of a listed company are generally
appointed for a term of a maximum of four years and reappointed once for another term of a maximum of four years.  Non-executive
directors of a listed company subsequently are typically reappointed for a term of a maximum of two years, which reappointment may be
extended by two years. Our executive and non-executive directors are, in principle, appointed by the general meeting of shareholders
upon the binding nomination of the non-executive directors.

The general meeting of shareholders is entitled at all times to suspend or dismiss a director. The general meeting of shareholders
may  only  adopt  a  resolution  to  suspend  or  dismiss  such  director  by  at  least  a  two-thirds  majority  of  the  votes  cast,  if  such  majority
represents more than half of the issued share capital of the company.

Delaware.    The Delaware General Corporation Law generally provides for a one-year term for directors, but permits directorships
to be divided into up to three classes with up to three-year terms, with the years for each class expiring in different years, if permitted by
a company's certificate of incorporation, an initial bylaw or a bylaw adopted by the stockholders. A director elected to serve a term on
such a classified board may not be removed by stockholders without cause. There is no limit in the number of terms a director may serve.

Director vacancies

The  Netherlands.        Under  Dutch  law,  directors  are  appointed  by  the  general  meeting  of  shareholders.  Under  our  articles  of
association,  directors  are,  in  principle,  appointed  by  the  general  meeting  of  shareholders  upon  the  binding  nomination  by  the  non-
executive  directors.  However,  the  general  meeting  of  shareholders  may  at  all  times  overrule  such  binding  nomination  by  a  resolution
adopted by at least a two-thirds majority of the votes cast, provided such majority represents more than half of the issued share capital of
our  company.  If  the  general  meeting  of  shareholders  overrules  the  binding  nomination,  the  non-executive  directors  must  make  a  new
nomination.

Delaware.    The Delaware General Corporation Law provides that vacancies and newly created directorships may be filled by a
majority of the directors then in office (even though less than a quorum) unless (1) otherwise provided in the certificate of incorporation
or bylaws of the corporation or (2) the certificate of incorporation directs that a particular class of stock is to elect such director, in which
case any other directors elected by such class, or a sole remaining director elected by such class, will fill such vacancy.

Conflict-of-interest transactions

The Netherlands.    Pursuant to Dutch law and our articles of association, directors may not take part in any discussion or decision-
making that involves a subject or transaction in relation to which they have a personal direct or indirect conflict of interest with us. Our
articles of association provide that if as a result thereof, the board is unable to act the resolution will be adopted by the general meeting of
shareholders.

Delaware.        The  Delaware  General  Corporation  Law  generally  permits  transactions  involving  a  Delaware  corporation  and  an

interested director of that corporation if:

·
·

·

the material facts as to the director's relationship or interest are disclosed and a majority of disinterested directors consent;
the  material  facts  are  disclosed  as  to  the  director's  relationship  or  interest  and  a  majority  of  shares  entitled  to  vote  thereon
consent; or
the  transaction  is  fair  to  the  corporation  at  the  time  it  is  authorized  by  the  board  of  directors,  a  committee  of  the  board  of
directors or the stockholders.

Shareholder rights

Voting rights

The Netherlands.    In accordance with Dutch law and our articles of association, each issued ordinary share confers the right to cast
one vote at the general meeting of shareholders. Each holder of ordinary shares may cast as many votes as it holds shares. Shares that are
held  by  us  or  our  direct  or  indirect  subsidiaries  do  not  confer  the  right  to  vote.  Dutch  law  does  not  permit  cumulative  voting  for  the
election of executive directors and non-executive directors.

For each general meeting of shareholders, a record date will be applied with respect to ordinary shares in order to establish which
shareholders are entitled to attend and vote at a specific general meeting of shareholders. Such record date is set by the board. The record
date and the manner in which shareholders can register and exercise their rights will be set out in the convocation notice of the meeting.

Delaware.    Under the Delaware General Corporation Law, each stockholder is entitled to one vote per share of stock, unless the
certificate  of  incorporation  provides  otherwise.  In  addition,  the  certificate  of  incorporation  may  provide  for  cumulative  voting  at  all
elections of directors of the corporation, or at elections held under specified circumstances. Either the certificate of incorporation or the
bylaws  may  specify  the  number  of  shares  and/or  the  amount  of  other  securities  that  must  be  represented  at  a  meeting  in  order  to
constitute a quorum, but in no event will a quorum consist of less than one third of the shares entitled to vote at a meeting.

Stockholders as of the record date for the meeting are entitled to vote at the meeting, and the board of directors may fix a record date
that is no more than 60 nor less than ten days before the date of the meeting, and if no record date is set then the record date is the close
of business on the day next preceding the day on which notice is given, or if notice is waived then the record date is the close of business
on the day next preceding the day on which the meeting is held. The determination of the stockholders of record entitled to notice or to
vote at a meeting of stockholders shall apply to any adjournment of the meeting, but the board of directors may fix a new record date for
the adjourned meeting.

Shareholder proposals

The Netherlands.    Pursuant to our articles of association, extraordinary general meetings of shareholders will be convened by the
board  or  by  those  who  are  authorized  by  law  or  pursuant  to  our  articles  of  association  to  do  so.  Pursuant  to  Dutch  law,  one  or  more
shareholders representing at least one-tenth of the issued share capital of the company may request the Dutch courts to order that they be
authorized by the court to convene a general meeting of shareholders. The court shall disallow the request if it does not appear that the
applicants have previously requested the board to convene a general meeting of shareholders and the board has taken the necessary steps
so that the general meeting of shareholders could be held within six weeks after the request.

The agenda for a general meeting of shareholders must include such items requested by one or more shareholders representing at
least 3% of the issued share capital of a company or such lower percentage as the articles of association may provide. Our articles of
association do not state such lower percentage.

Delaware.    Delaware law does not specifically grant stockholders the right to bring business before an annual or special meeting.
However, if a Delaware corporation is subject to the SEC's proxy rules, a stockholder who owns at least $2,000 in market value, or 1% of
the corporation's securities entitled to vote, may propose a matter for a vote at an annual or special meeting in accordance with those
rules.

Action by written consent

The Netherlands.    Under Dutch law, the articles of association of a company may provide that shareholders' resolutions may be
adopted  in  writing  without  holding  a  general  meeting  of  shareholders,  provided  that  the  resolution  is  adopted  unanimously  by  all
shareholders that are entitled to vote. For a listed company, this method of adopting resolutions is not feasible.

Delaware.    Although permitted by Delaware law, publicly listed companies do not typically permit stockholders of a corporation to

take action by written consent.

Appraisal rights

The Netherlands.    The concept of appraisal rights does not exist under Dutch law. However, pursuant to Dutch law a shareholder
who for its own account contributes at least 95% of our issued share capital may initiate proceedings against our minority shareholders
jointly  for  the  transfer  of  their  shares  to  it.  The  proceedings  are  held  before  the  Enterprise  Chamber  (Ondernemingskamer).  The
Enterprise Chamber may grant the claim for squeeze-out in relation to all minority shareholders and will determine the price to be paid
for the shares, if necessary after appointment of one or three experts who will offer an opinion to the Enterprise Chamber on the value to
be paid for the shares of the minority shareholders.

Furthermore, in accordance with Directive 2005/56/EC of the European Parliament and the Council of October 26, 2005 on cross-
border mergers of limited liability companies, Dutch law provides that, to the extent the acquiring company in a cross-border merger is
organized under the laws of another EU member state, a shareholder of a Dutch disappearing company who has voted against the cross-
border  merger  may  file  a  claim  with  the  Dutch  company  for  compensation.  The  compensation  is  to  be  determined  by  one  or  more
independent experts.

Delaware.    The Delaware General Corporation Law provides for stockholder appraisal rights, or the right to demand payment in

cash of the judicially determined fair value of the stockholder's shares, in connection with certain mergers and consolidations.

Shareholder suits

The Netherlands.    In the event a third party is liable to a Dutch company, only a company itself can bring a civil action against that
third party. An individual shareholder does not have the right to bring an action on behalf of a company. This individual shareholder may,
in its own name, have an individual right to take action against such third party in the event that the cause for the liability of that third
party  also  constitutes  a  tortious  act  directly  against  that  individual  shareholder.  The  Dutch  Civil  Code  provides  for  the  possibility  to
initiate such action collectively. A collective action can be instituted by a foundation or an association whose objective is to protect the
rights  of  a  group  of  persons  having  similar  interests.  The  collective  action  itself  cannot  result  in  an  order  for  payment  of  monetary
damages  but  may  only  result  in  a  declaratory  judgment  (verklaring  voor  recht).  In  order  to  obtain  compensation  for  damages,  the
foundation or association and the defendant may reach—often on the basis of such declaratory judgment—a settlement. A Dutch court
may  declare  the  settlement  agreement  binding  upon  all  the  injured  parties  with  an  opt-out  choice  for  an  individual  injured  party.  An
individual injured party may also itself—outside the collective action—institute a civil claim for damages.

Delaware.    Under the Delaware General Corporation Law, a stockholder may bring a derivative action on behalf of the corporation
to enforce the rights of the corporation. An individual also may commence a class action suit on behalf of himself and other similarly
situated stockholders where the requirements for maintaining a class action under Delaware law have been met. A person may institute
and maintain such a suit only if that person was a stockholder at the time of the transaction which is the subject of the suit. In addition,
under Delaware case law, the plaintiff normally must be a stockholder at the time of the transaction that is the subject of the suit and
throughout the duration of the derivative suit. Delaware law also requires that the derivative plaintiff make a demand on the directors of
the corporation to assert the corporate claim before the suit may be prosecuted by the derivative plaintiff in court, unless such a demand
would be futile.

Repurchase of shares

The Netherlands.    Under Dutch law, a company such as ours may not subscribe for newly issued shares in its own share capital.
Such  company  may,  however,  subject  to  certain  restrictions  under  Dutch  law  and  its  articles  of  association,  acquire  shares  in  its  own
share  capital.  We  may  acquire  fully  paid-up  shares  in  our  own  share  capital  at  any  time  for  no  valuable  consideration.  Furthermore,
subject  to  certain  provisions  of  Dutch  law  and  our  articles  of  association,  we  may  repurchase  fully  paid-up  shares  in  our  own  share
capital  if  (1) such  repurchase  would  not  cause  our  shareholders'  equity  to  fall  below  an  amount  equal  to  the  sum  of  the  paid-up  and
called-up part of the issued share capital and the reserves we are required to maintain pursuant to applicable law and (2) we would not as
a result of such repurchase hold more than 50% of our own issued share capital.

Other than shares acquired for no valuable consideration, ordinary shares may only be acquired following a resolution of our board,
acting pursuant to an authorization for the repurchase of shares granted by the general meeting of shareholders. An authorization by the
general  meeting  of  shareholders  for  the  repurchase  of  shares  can  be  granted  for  a  maximum  period  of  18 months.  Such  authorization
must specify the number of shares that may be acquired, the manner in which these shares may be acquired and the price range within
which the shares may be acquired. Our board has been authorized, for a period of 18 months to be calculated from the date of the annual
general meeting of shareholders held on June 14, 2022, to cause the repurchase of ordinary shares by us of up to 10% of our issued share
capital, for a price per share between the nominal value of the ordinary shares and an amount of 110% of the highest price of the ordinary
shares  officially  quoted  on  any  of  the  official  stock  markets  we  are  listed  on  during  any  of  30  banking  days  preceding  the  date  the
repurchase is effected or proposed.

No  authorization  of  the  general  meeting  of  shareholders  is  required  if  fully  paid-up  ordinary  shares  are  acquired  by  us  with  the
intention  of  transferring  such  ordinary  shares  to  our  employees  under  an  applicable  employee  stock  purchase  plan,  provided  such
ordinary shares are officially quoted on any of the official stock markets.

Delaware.    Under the Delaware General Corporation Law, a corporation may purchase or redeem its own shares unless the capital
of the corporation is impaired or the purchase or redemption would cause an impairment of the capital of the corporation. A Delaware
corporation may, however, purchase or redeem out of capital any of its preferred shares or, if no preferred shares are outstanding, any of
its  own  shares  if  such  shares  will  be  retired  upon  acquisition  and  the  capital  of  the  corporation  will  be  reduced  in  accordance  with
specified limitations.

Anti-takeover provisions

The Netherlands.    Under Dutch law, various protective measures are possible and permissible within the boundaries set by Dutch
statutory law and Dutch case law. We have adopted several provisions that may have the effect of making a takeover of our company
more difficult or less attractive, including:

·

·

·

the staggered four-year terms of our directors, as a result of which only approximately one-fourth of our non-executive directors
will be subject to election in any one year;
a provision that our directors may only be removed at the general meeting of shareholders by a two-thirds majority of votes cast
representing more than half of our issued share capital; and
requirements  that  certain  matters,  including  an  amendment  of  our  articles  of  association,  may  only  be  brought  to  our
shareholders for a vote upon a proposal by our board.

Delaware.    In  addition  to  other  aspects  of  Delaware  law  governing  fiduciary  duties  of  directors  during  a  potential  takeover,  the
Delaware  General  Corporation  Law  also  contains  a  business  combination  statute  that  protects  Delaware  companies  from  hostile
takeovers and from actions following the takeover by prohibiting some transactions once an acquirer has gained a significant holding in
the corporation.

·

·

·

Section 203 of the Delaware General Corporation Law prohibits "business combinations," including mergers, sales and leases of
assets,  issuances  of  securities  and  similar  transactions  by  a  corporation  or  a  subsidiary  with  an  interested  stockholder  that
beneficially  owns  15%  or  more  of  a  corporation's  voting  stock,  within  three  years  after  the  person  becomes  an  interested
stockholder, unless: the transaction that will cause the person to become an interested stockholder is approved by the board of
directors of the target prior to the transactions;
after the completion of the transaction in which the person becomes an interested stockholder, the interested stockholder holds at
least 85% of the voting stock of the corporation not including shares owned by persons who are directors and representatives of
interested stockholders and shares owned by specified employee benefit plans; or
after  the  person  becomes  an  interested  stockholder,  the  business  combination  is  approved  by  the  board  of  directors  of  the
corporation and holders of at least 66.67% of the outstanding voting stock, excluding shares held by the interested stockholder.

A  Delaware  corporation  may  elect  not  to  be  governed  by  Section  203  by  a  provision  contained  in  the  original  certificate  of
incorporation  of  the  corporation  or  an  amendment  to  the  original  certificate  of  incorporation  or  to  the  bylaws  of  the  company,  which
amendment must be approved by a majority of the shares entitled to vote and may not be further amended by the board of directors of the
corporation. Such an amendment is not effective until twelve months following its adoption.

Inspection of books and records

The  Netherlands.        Our  board  provides  the  shareholders,  at  the  general  meeting  of  shareholders,  with  all  information  that  the
shareholders require for the exercise of their powers, unless doing so would be contrary to an overriding interest of ours. Our board must
give reason for electing not to provide such information on the basis of an overriding interest.

Delaware.        Under  the  Delaware  General  Corporation  Law,  any  stockholder  may  inspect  certain  of  the  corporation's  books  and

records, for any proper purpose, during the corporation's usual hours of business.

Removal of directors

The Netherlands.        Under  our  articles  of  association,  the  general  meeting  of  shareholders  is  at  all  times  entitled  to  suspend  or
dismiss a director. The general meeting of shareholders may only adopt a resolution to suspend or dismiss such a member by at least a
two-thirds majority of the votes cast, provided such majority represents more than half of the issued share capital of our company.

Delaware.    Under the Delaware General Corporation Law, any director or the entire board of directors may be removed, with or
without cause, by the holders of a majority of the shares then entitled to vote at an election of directors, except (1) unless the certificate
of incorporation provides otherwise, in the case of a corporation whose board is classified, stockholders may effect such removal only for
cause, or (2) in the case of a corporation having cumulative voting, if less than the entire board is to be removed, no director may be
removed without cause if the votes cast against his removal would be sufficient to elect him if then cumulatively voted at an election of
the entire board of directors, or, if there are classes of directors, at an election of the class of directors of which he is a part.

Preemptive rights

The Netherlands.    Under Dutch law, in the event of an issuance of ordinary shares, each shareholder will have a pro rata preemptive
right in proportion to the aggregate nominal value of the ordinary shares held by such holder (with the exception of ordinary shares to be
issued to employees or ordinary shares issued against a contribution other than in cash). Under our articles of association, the preemptive
rights in respect of newly issued ordinary shares may be restricted or excluded by a resolution of the general meeting of shareholders
upon proposal of our board. The general meeting of shareholders may designate our board to restrict or exclude the preemptive rights in
respect  of  newly  issued  ordinary  shares.  Such  designation  can  be  granted  for  a  period  not  exceeding  five  years.  A  resolution  of  the
general meeting of shareholders to restrict or exclude the preemptive rights or to designate the board as the authorized body to do so
requires a two-thirds majority of the votes cast, if less than one half of our issued share capital is represented at the meeting.

At our annual general meeting of shareholders held on June 14, 2022, the general meeting of shareholders resolved to authorize our
board for a period of 18 months with effect from the date of the meeting to restrict or exclude preemptive rights accruing to shareholders
in connection with the issue of ordinary shares or rights to subscribe for ordinary shares.

Delaware.    Under the Delaware General Corporation Law, stockholders have no preemptive rights to subscribe for additional issues
of  stock  or  to  any  security  convertible  into  such  stock  unless,  and  to  the  extent  that,  such  rights  are  expressly  provided  for  in  the
certificate of incorporation.

Dividends

The Netherlands.        Dutch  law  provides  that  dividends  may  be  distributed  after  adoption  of  the  annual  accounts  by  the  general
meeting of shareholders from which it appears that such dividend distribution is allowed. Moreover, dividends may be distributed only to
the extent that the shareholders' equity exceeds the amount of the paid-up and called-up part of the issued share capital of the company
and the reserves that must be maintained under the law or the articles of association. Interim dividends may be declared as provided in
the articles of association and may be distributed to the extent that the shareholders' equity exceeds the amount of the paid-up and called-
up part of the issued share capital of the company and the reserves that must be maintained under the law or the articles of association, as
apparent from an interim statement of assets and liabilities.

Under our articles of association, any amount of profit may be carried to a reserve as our board determines. After reservation by our
board of any profit, the remaining profit will be at the disposal of the shareholders. Our corporate policy is to only make a distribution of
dividends  to  our  shareholders  after  the  adoption  of  our  annual  accounts  demonstrating  that  such  distribution  is  legally  permitted.
However, our board is permitted to declare interim dividends without the approval of the general meeting of shareholders.

Dividends will be made payable not later than thirty days after the date they were declared unless the body declaring the dividend
determines  a  different  date.  Claims  to  dividends  not  made  within  five  years  and  one  day  from  the  date  that  such  dividends  became
payable will lapse and any such amounts will be considered to have been forfeited to us (verjaring).

Delaware.    Under the Delaware General Corporation Law, a Delaware corporation may pay dividends out of its surplus (the excess
of net assets over capital), or in case there is no surplus, out of its net profits for the fiscal year in which the dividend is declared and/or
the preceding fiscal year (provided that the amount of the capital of the corporation is not less than the aggregate amount of the capital
represented  by  the  issued  and  outstanding  stock  of  all  classes  having  a  preference  upon  the  distribution  of  assets).  In  determining  the
amount  of  surplus  of  a  Delaware  corporation,  the  assets  of  the  corporation,  including  stock  of  subsidiaries  owned  by  the  corporation,
must be valued at their fair market value as determined by the board of directors, without regard to their historical book value. Dividends
may be paid in the form of shares, property or cash.

Shareholder vote on certain reorganizations

The  Netherlands.        Under  Dutch  law,  the  general  meeting  of  shareholders  must  approve  resolutions  of  the  board  relating  to  a

significant change in the identity or the character of the company or the business of the company, which includes:

·
·

·

a transfer of the business or virtually the entire business to a third party;
the entry into or termination of a long-term cooperation of the company or a subsidiary with another legal entity or company or
as a fully liable partner in a limited partnership or general partnership, if such cooperation or termination is of a far-reaching
significance for the company; and
the acquisition or divestment by the company or a subsidiary of a participating interest in the capital of a company having a
value of at least one third of the amount of its assets according to its balance sheet and explanatory notes or, if the company
prepares a consolidated balance sheet, according to its consolidated balance sheet and explanatory notes, according to the last
adopted annual accounts of the company.

Delaware.    Under the Delaware General Corporation Law, the vote of a majority of the outstanding shares of capital stock entitled
to  vote  thereon  generally  is  necessary  to  approve  a  merger  or  consolidation  or  the  sale  of  all  or  substantially  all  of  the  assets  of  a
corporation.  The  Delaware  General  Corporation  Law  permits  a  corporation  to  include  in  its  certificate  of  incorporation  a  provision
requiring  for  any  corporate  action  the  vote  of  a  larger  portion  of  the  stock  or  of  any  class  or  series  of  stock  than  would  otherwise  be
required.

Under  the  Delaware  General  Corporation  Law,  no  vote  of  the  stockholders  of  a  surviving  corporation  to  a  merger  is  needed,
however, unless required by the certificate of incorporation, if (1) the agreement of merger does not amend in any respect the certificate
of  incorporation  of  the  surviving  corporation,  (2) the  shares  of  stock  of  the  surviving  corporation  are  not  changed  in  the  merger  and
(3) the number of shares of common stock of the surviving corporation into which any other shares, securities or obligations to be issued
in the merger may be converted does not exceed 20% of the surviving corporation's common stock outstanding immediately prior to the
effective date of the merger. In addition, stockholders may not be entitled to vote in certain mergers with other corporations that own
90% or more of the outstanding shares of each class of stock of such corporation, but the stockholders will be entitled to appraisal rights.

Remuneration of directors

The Netherlands.    Under Dutch law and our articles of association, we must adopt a remuneration policy for our directors. Such
remuneration  policy  shall  be  adopted  by  the  general  meeting  of  shareholders  upon  the  proposal  of  our  non-executive  directors.  The
remuneration  of  our  executive  directors  will  be  determined  by  our  non-executive  directors  with  due  observance  of  our  remuneration
policy; the remuneration of our non-executive directors will be determined by the board with due observance of our remuneration policy.

Delaware.        Under  the  Delaware  General  Corporation  Law,  the  stockholders  do  not  generally  have  the  right  to  approve  the
compensation policy for directors or the senior management of the corporation, although certain aspects of executive compensation may
be subject to binding or advisory stockholder votes due to the provisions of U.S. federal securities and tax law, as well as stock exchange
requirements.

Transfer Agent and Registrar

Computershare Trust Company, N.A. serves as transfer agent and registrar for our ordinary shares.

February 27, 2023

Name of Subsidiary
uniQure biopharma B.V.
uniQure IP B.V.
uniQure Inc.
Corlieve Therapeutics SAS
Corlieve Therapeutics AG

SUBSIDIARIES OF UNIQURE N.V.

     Jurisdiction of Organization

The Netherlands
The Netherlands
Delaware
France
Switzerland

Exhibit 21.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the registration statements (No. 333-253749) on Form S-3 and (No. 333-
258036,  No.  333-225629,  No.  333-222051,  No.  333-218005  and  No.  333-197887)  on  Form  S-8  of  our  report  dated
February 27, 2023, with respect to the consolidated financial statements of uniQure N.V. and the effectiveness of internal
control over financial reporting.

/s/ KPMG Accountants N.V.

Exhibit 23.1

Amstelveen, The Netherlands

February 27, 2023

Exhibit 31.1

Certification of Chief Executive Officer

I, Matthew Kapusta, certify that:

1.                                      I have reviewed this Annual Report on Form 10-K of uniQure N.V.;

2.                                      Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in light of the circumstances under which such statements were made,
not misleading with respect to the period covered by this report;

3.                                      Based on my knowledge, the financial statements, and other financial information included in this report, fairly
present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for,
the periods presented in this report;

4.                                 The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls
and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting
(as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)                            Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being
prepared;

(b)                            Designed such internal control over financial reporting, or caused such internal control over financial reporting to
be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the
preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)                             Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our
conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this
report based on such evaluation; and

(d)                            Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during
the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has
materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.                                 The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal
control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or
persons performing the equivalent functions):

(a)                            All significant deficiencies and material weaknesses in the design or operation of internal control over financial
reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report
financial information; and

(b)                            Any fraud, whether or not material, that involves management or other employees who have a significant role in
the registrant’s internal control over financial reporting.

By: /s/ MATTHEW KAPUSTA

Matthew Kapusta
Chief Executive Officer
(Principal Executive Officer)
February 27, 2023

 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
Exhibit 31.2

Certification of Chief Financial Officer

I, Christian Klemt, certify that:

1.                                      I have reviewed this Annual Report on Form 10-K of uniQure N.V.;

2.                                      Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in light of the circumstances under which such statements were made,
not misleading with respect to the period covered by this report;

3.                                      Based on my knowledge, the financial statements, and other financial information included in this report, fairly
present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for,
the periods presented in this report;

4.                                 The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls
and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting
(as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)                            Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being
prepared;

(b)                            Designed such internal control over financial reporting, or caused such internal control over financial reporting to
be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the
preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)                             Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our
conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this
report based on such evaluation; and

(d)                            Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during
the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has
materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.                                 The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal
control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or
persons performing the equivalent functions):

(a)                            All significant deficiencies and material weaknesses in the design or operation of internal control over financial
reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report
financial information; and

(b)                            Any fraud, whether or not material, that involves management or other employees who have a significant role in
the registrant’s internal control over financial reporting.

By: /s/ CHRISTIAN KLEMT

Christian Klemt
Chief Financial Officer
(Principal Financial Officer)
February 27, 2023

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350
AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with this Annual Report of uniQure N.V. (the “Company”) on Form 10-K for the period ended December 31,
2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, Matthew
Kapusta, Chief Executive Officer, and Christian Klemt, Chief Financial Officer of the Company, hereby certify, pursuant to
18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1                                                   the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of
1934; and

2                                                   the information contained in the Report fairly presents, in all material respects, the financial condition and
results of operations of the Company.

By: /s/ MATTHEW KAPUSTA

Matthew Kapusta
Chief Executive Officer
(Principal Executive Officer)
February 27, 2023

By: /s/ CHRISTIAN KLEMT

Christian Klemt
Chief Financial Officer
(Principal Financial Officer)
February 27, 2023

A signed original of this written statement required by Section 906 has been provided to uniQure N.V. and will be retained
by uniQure N.V. and furnished to the SEC or its staff upon request.