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uniQure N.V.

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FY2020 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, 2020

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 25a,
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. ☒

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, 2020 was $2,002.7 million, based on

the closing price reported as of June 30, 2020 on the NASDAQ Global Select Market.

As of February 25, 2021, the registrant had 44,993,987 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 2021 Annual Meeting of Shareholders to be filed with the Securities and Exchange Commission no later
than April 30, 2021 and to be delivered to shareholders in connection with the 2021 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
Selected Financial Data

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

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, statements related to the COVID-19 coronavirus pandemic, our collaboration and license agreement with
CSL  Behring  LLC  and  the  timing  of  the  completion  of  the  transactions  contemplated  thereby,  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 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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An investment in our ordinary shares involves significant risks. You should carefully consider the information set
forth under “Risk Factors” before deciding to invest in our ordinary shares. The following is a summary of the principal
risks associated with an investment in our ordinary shares:

Summary Risk Factors

● We and CSL Behring may be unable to close the transaction contemplated by the CSL Behring Agreement, and
any delay in closing the transaction could diminish the anticipated benefits of the transaction or result in increased
costs. Failure to close the transaction could adversely impact the market price of our ordinary shares as well as
our business and operating results, cash flows and results of operations.

● We  may  encounter  substantial  delays  in,  and  impediments  to  the  progress  of  our  clinical  trials  or  fail  to
demonstrate the safety and efficacy of our product candidates, and our clinical trials for AMT-061 are currently
on clinical hold and could remain on clinical hold indefinitely.

● Our business and operations have been, and may continue to be, materially and adversely affected by the ongoing

COVID-19 pandemic.

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

additional product candidates.

● We may not be successful in our efforts to in-license or acquire product candidates that align with our research

and development strategy.

● 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.

● Our resources might be adversely affected if we are unable to meet our product development and supply needs
and obligations, including our ability to complete the validation of our existing manufacturing processes as well
as to develop larger scale manufacturing processes, which could adversely affect our ability to sufficiently meet
our future production needs or regulatory filing timelines.

● Our resources might be adversely affected if we are unable to meet our product supply needs and obligations.

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

● 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 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, which could increase the possibility that a

competitor will discover them or that our trade secrets 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.

● Our relationships with customers and third-party payers will be subject to applicable anti-kickback, anti-bribery,
fraud and abuse and other laws and regulations, which, if we are found in violation thereof, could expose us to
criminal  sanctions,  civil  penalties,  contractual  damages,  reputational  harm  and  diminished  profits  and  future
earnings.

● 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.

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● 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.

● 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.

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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, seeking to develop single treatments with potentially curative results
for patients suffering from genetic and other devastating diseases. We are advancing a focused pipeline of innovative gene
therapies,  including  product  candidates  for  the  treatment  of  hemophilia  B,  which  we  intend  to  license  to  CSL  Behring
pursuant  to  the  CSL  Behring  Agreement  (as  defined  below),  and  Huntington’s  disease.  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 commercialization and license agreement

On  June  24,  2020,  uniQure  biopharma  B.V.,  a  wholly-owned  subsidiary  of  uniQure  N.V.,  entered  into  a
commercialization  and  license  agreement  (as  amended,  the  “CSL  Behring  Agreement”)  with  CSL  Behring  LLC  (“CSL
Behring”)  pursuant  to  which  CSL  Behring  will  receive  exclusive  global  rights  to  etranacogene  dezaparvovec,  our
investigational gene therapy for patients with hemophilia B (the “Product”).

Under the terms of the CSL Behring Agreement, we will receive a $450.0 million upfront cash payment upon the
closing  of  the  CSL  Behring  Agreement  and  be  eligible  to  receive  up  to  $1.6  billion  in  additional  payments  based  on
regulatory and commercial milestones. The CSL Behring agreement also provides that we 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.

 Pursuant to the CSL Behring Agreement, we will be responsible for the completion of the HOPE-B clinical trial,
manufacturing process validation, and the manufacturing supply of the Product until such time that these capabilities may
be transferred to CSL Behring or its designated contract manufacturing organization. Concurrently with the execution of
the CSL Behring Agreement, we and CSL Behring 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. Clinical development
and  regulatory  activities  performed  by  us  pursuant  to  the  CSL  Behring  Agreement  will  be  reimbursed  by  CSL  Behring.
CSL Behring will be responsible for global regulatory submissions and commercialization requirements for the Product.

Other than under the CSL Behring Agreement, neither we nor CSL Behring may perform any clinical trials, with
the  exception  of  trials  required  to  extend  the  label  or  gain  marketing  authorization  outside  the  United  States  or  the
European Union, for any gene therapy product, gene-editing product, or any other product comprising an AAV vector to
conduct  nucleotide  transfer  (including  deoxyribonucleic  acid  (“DNA”)  and  ribonucleic  acid  (“RNA”))  for  the  treatment,
prevention, or cure of hemophilia B for a period commencing on June 24, 2020 and continuing for a period of four years
following  the  first  commercial  sale  of  the  Product  in  the  United  States,  and  neither  we  nor  CSL  Behring  may
commercialize  such  a  product  for  a  period  commencing  as  of  June  24,  2020  and  continuing  for  a  period  of  seven  years
following the first commercial sale of the Product in the United States. This exclusivity commitment would not bind an
acquirer of us that owns or controls such a product so long as certain precautions are followed to ensure that CSL Behring’s
confidential  information  and  our  proprietary  technology  related  to  the  Product  are  not  used  or  accessed  by  personnel  of
such acquirer who are developing or commercializing such competing product.

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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.

The effectiveness of the transactions contemplated by the CSL Behring Agreement is contingent on completion of
review  under  antitrust  laws  in  the  United  States,  Australia,  and  the  United  Kingdom,  and  certain  provisions  of  the  CSL
Behring Agreement will not become effective until after we receive all such regulatory approvals.

On November 11, 2020, the Australian Competition and Consumer Commission (“ACCC”) determined, pursuant
to  section  50  of  the  Competition  and  Consumer  Act  2010  of  Australia,  that  it  will  not  intervene  in  the  CSL  Behring
Agreement. Thus, the ACCC has completed its review of the CSL Behring Agreement, and the transactions contemplated
by the CSL Behring Agreement may close from the perspective of the Australian competition authority.

On November 24, 2020, the Competition and Markets Authority in the United Kingdom (the “CMA”) adopted a
decision not to refer the CSL Behring Agreement for proceedings under section 33 of the Enterprise Act 2002 of the United
Kingdom. The decision was made public by the CMA on January 6, 2021. Thus, the CMA has completed its review of the
CSL  Behring  Agreement,  and  the  transactions  contemplated  by  the  CSL  Behring  Agreement  may  close  from  the
perspective of the United Kingdom competition authority.

On December 3, 2020, we and CSL Behring filed a premerger notification and report form under the Hart-Scott-
Rodino  Antitrust  Improvements  Act  of  1976  (the  “HSR  Act”).  On  January  4,  2021,  the  United  States  Federal  Trade
Commission  (“FTC”)  issued  to  us  a  request  for  additional  information  and  documentary  material  (a  “Second  Request”)
under the HSR Act. The FTC similarly issued a Second Request to CSL Behring also with respect to the antitrust review of
the CSL Behring Agreement. The effect of the Second Request is to extend the waiting period imposed under the HSR Act
until  30  days  after  all  parties  to  the  CSL  Behring  Agreement  have  substantially  complied  with  the  requests  unless  the
waiting period is terminated earlier by the FTC or voluntarily extended by the parties. We do not believe that the FTC will
determine that the consummation of the transaction will result in a violation of the HSR Act. However, there can be no
assurance as to the outcome of the Second Request.

Closing of the transaction is expected to materially impact our profitability and cash flows. Receipt of the $450.0
million payment due on closing would extend the funding of our operations into the second half of 2024 (assuming a full
repayment of funds borrowed from Hercules Capital Inc. (“Hercules”) under our term loan facility by 2023). However, we
expect to continue to incur losses and to generate negative cash flows beyond the fiscal year in which we would close the
transaction.

Hemophilia B program – Etranacogene dezaparvovec (AMT-061)

Etranacogene dezaparvovec is our lead gene therapy candidate and includes an Adeno-associated virus (“AAV”)
serotype  5  (together  “AAV-5”)  vector  incorporating  the  functional  human  Factor  IX  (“FIX”)  Padua  variant.  We  are
currently conducting a pivotal study in patients with severe and moderately-severe hemophilia B.

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In August 2018, we initiated a Phase IIb dose-confirmation study of etranacogene dezaparvovec and in September
2018,  we  completed  the  dosing  for  that  study.  In  February,  May,  July,  and  December  2019,  and  in  December  2020,  we
presented updated data from the Phase IIb dose-confirmation study of etranacogene dezaparvovec. The most recent data
that  we  announced  from  the  Phase  IIb  study  of  etranacogene  dezaparvovec  show  that  all  three  patients  experienced
increasing and sustained FIX levels after a one-time administration of etranacogene dezaparvovec. Mean FIX activity was
44.2%  of  normal  two  years  after  administration,  exceeding  threshold  FIX  levels  generally  considered  sufficient  to
significantly  reduce  the  risk  of  bleeding  events.  The  first  patient  achieved  FIX  activity  of  44.7%  of  normal,  the  second
patient  was  51.6%  of  normal  and  the  third  patient  was  36.3%  of  normal.  The  second  and  third  patients  had  previously
screen-failed and were excluded from another gene therapy study due to pre-existing neutralizing antibodies to a different
AAV vector. At two years after dosing, two of the three participants remain free from bleeds and use of FIX replacement
therapy. A single bleed has been reported in one participant, who has used a total of two FIX infusions (excluding surgery).
All patients have remained free of prophylaxis in the two years since receiving etranacogene dezaparvovec.

In  June  2018,  we  initiated  the  six-month  lead-in  period  of  our  Phase  III  HOPE-B  pivotal  trial  of  etranacogene
dezaparvovec  (the  “HOPE-B  trial”).  The  HOPE-B  trial  is  a  multinational,  multi-center,  open-label,  single-arm  study  to
evaluate  the  safety  and  efficacy  of  etranacogene  dezaparvovec.  After  the  six-month  lead-in  period,  patients  received  a
single intravenous administration of etranacogene dezaparvovec. Patients enrolled in the HOPE-B trial were tested for the
presence of pre-existing neutralizing antibodies to AAV5 but not excluded from the trial based on their titers.

The primary endpoints of the study are based on the FIX activity level achieved following the administration of
etranacogene dezaparvovec after 26 weeks and 52 weeks after dosing as well as annualized bleed rates during the 52 weeks
after dosing.

In March 2020, we completed dosing of the 54 patients in the HOPE-B trial. The targeted number of patients to be
dosed per the clinical trial protocol was 50. As set forth below, we have implemented and continue to implement various
measures to allow us to closely monitor the trial within the guidance provided by the U.S. Food and Drug Administration
(“FDA”) regarding the impact of the COVID-19 coronavirus pandemic (“COVID-19”) to minimize any risk or disruption
in patient follow-up visits.

In December 2020, we announced top-line data from the HOPE-B trial. The 26-week follow-up date from the trial
showed that FIX activity in the 54 patients increased after dosing from ≤ 2% to a mean of 37.2% at 26 weeks, meeting a
first primary endpoint of the HOPE-B trial. No correlation between pre-existing neutralizing antibodies and FIX activity
was  found  in  patients  with  neutralizing  antibody  titers  up  to  678.2,  a  range  expected  to  include  more  than  95%  of  the
general population; one patient with a neutralizing antibody titer of 3,212.3 did not show an increase in FIX activity. Less
than 1% of the general population is expected to have neutralizing antibody titers of greater than 3,000.

 During the 26-week period after dosing, 15 patients (28%) reported a total of 21 bleeding events, representing a
reduction  of  83%  compared  to  the  123  bleeding  events  reported  by  38  patients  (70%)  during  the  observational  lead-in
phase  of  the  trial.  Total  bleeds  include  any  bleeding  event  reported  after  the  treatment  of  etranacogene  dezaparvovec,
including spontaneous, traumatic, and those associated with unrelated medical procedures, whether or not FIX treatment
was required. Of the total bleeding events reported during the 26-week period after dosing, only three were classified as
spontaneous bleeds requiring treatment, representing a reduction of 92% compared to the 37 such bleeding events reported
during the observational lead-in phase. Mean annualized usage of FIX replacement therapy, a secondary endpoint in the
clinical  trial,  declined  by  96%  during  the  26-week  period  after  dosing  compared  to  the  observational  lead-in  phase.
Etranacogene dezaparvovec was generally well-tolerated. As of the November 2020 cut-off date, most adverse events were
classified as mild (81.5%). The most common events included transaminase elevation treated with steroids per protocol (9
patients;  17%),  infusion-related  reactions  (7  patients;  13%),  headache  (7  patients;  13%)  and  influenza-like  symptoms  (7
patients; 13%). Liver enzyme elevations resolved with a tapering course of corticosteroids and FIX activity remained in the
mild  range  in  the  steroid  treated  patients.  No  relationship  between  safety  and  neutralizing  antibody  titers  was  observed.
Based on interactions with the FDA and the European Medicines Agency (“EMA”), we plan to incorporate FIX activity
and bleeding rates at 52 weeks as additional co-primary endpoints in the study.

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On December 21, 2020, our clinical trials of etranacogene dezaparvovec, including our HOPE-B trial, were placed
on clinical hold by the FDA. The clinical hold was initiated following the submission of a safety report in mid-December
relating  to  a  possibly  related  serious  adverse  event  associated  with  a  preliminary  diagnosis  of  hepatocellular  carcinoma
(“HCC”), a form of liver cancer, in one patient in the HOPE-B trial that was treated with etranacogene dezaparvovec in
October 2019. The patient has multiple risk factors associated with HCC, including a twenty-five-year history of hepatitis
C (“HCV”), hepatitis B virus (“HBV”), evidence of non-alcoholic fatty liver disease and advanced age. Chronic infections
with hepatitis B and C have been associated with approximately 80% of HCC cases.

The  liver  lesion  was  detected  during  a  routine  abdominal  ultrasound  conducted  as  part  of  the  required  study
assessments in patients at one-year post dosing. A surgical resection of the lesion has occurred, and an analysis of the tissue
samples  was  initiated  in  early  2021.  On  February  19,  2021,  we  reported  initial  results  from  this  analysis  to  the  FDA  in
accordance with pharmacovigilance requirements. We are gathering final data from these molecular analyses and will be
preparing a detailed response to the FDA’s clinical hold questions regarding this event. Currently, we do not have adequate
data to determine a possible causal relationship, especially in the context of the other known risk factors. We currently do
not anticipate any impact on our regulatory submission timelines, including the filing of a BLA.

No other cases of HCC have been reported in our clinical trials conducted in more than 67 patients in hemophilia

B, with some patients dosed more than 5 years ago.

Etranacogene dezaparvovec has been granted Breakthrough Therapy Designation by the FDA and access to the

current priority medicines (“PRIME”) initiative by the EMA.

Huntington’s disease program (AMT-130)

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 an miRNA specifically designed to
silence the huntingtin gene and the potentially highly toxic exon 1 protein fragment. AMT-130 has received orphan drug
and Fast Track designations from the FDA and Orphan Medicinal Product Designation from the EMA.

In June 2020, we announced the completion of the first two patient procedures in the Phase I/II clinical trial of
AMT-130 for the treatment of Huntington’s disease. These procedures occurred after a postponement that resulted from the
COVID-19 pandemic and the associated states of emergency declarations in the United States. The Phase I/II protocol is a
randomized,  imitation  surgery-controlled,  double-blinded  study  conducted  at  three  surgical  sites,  and  multiple  referring,
non-surgical sites in the U.S. The primary objective of the study is to evaluate the safety, tolerability, and efficacy of AMT-
130 at two doses.

On September 25, 2020, we announced that the independent Data Safety Monitoring Board (“DSMB”) overseeing
the Phase I/II clinical trial of AMT-130 for the treatment of Huntington’s disease had met and reviewed 90-day safety data
from the first two patients enrolled in the trial. No significant safety concerns were noted to prevent further dosing.

On October 13, 2020, we announced the completion of the third and fourth patient procedures in the Phase I/II

clinical trial.

On February 8, 2021, we announced that the DSMB had met and reviewed the six-month safety data from the first
two  enrolled  patients  and  the  90-day  safety  data  from  the  next  two  enrolled  patients  in  the  study.  No  significant  safety
concerns were noted to prevent further dosing, and the final six patients in the first cohort are now cleared for enrollment.

BMS collaboration

We and Bristol-Myers Squibb (“BMS”) entered into a collaboration and license agreement in May 2015 (“BMS
CLA”).  BMS  had  initially  designated  four  Collaboration  Targets  in  2015  and  in  accordance  with  the  terms  of  the  BMS
CLA could have designated a fifth to tenth Collaboration Target.

In February 2019, BMS requested a one-year extension of the initial research term. In April 2019, following an
assessment of the progress of this collaboration and our expanding proprietary programs, we notified BMS that we did not
intend  to  agree  to  an  extension  of  the  initial  research  term.  Accordingly,  the  initial  four-year  research  term  under  the
collaboration terminated on May 21, 2019.

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On December 1, 2020, we and BMS amended the BMS CLA (“amended BMS CLA”). Following the amendment
BMS is no longer entitled to designate a fifth to tenth Collaboration Target and as such we are no longer entitled to receive
an aggregate $16.5 million in target designation payments for research, development, and regulatory milestone payments
related to the fifth and tenth Collaboration Targets. For a period of one-year from the effective date of the amended BMS
CLA,  BMS  may  replace  up  to  two  of  the  four  active  Collaboration  Targets  with  two  new  targets  in  the  field  of
cardiovascular disease. We continue to be entitled to receive up to $217.0 million for each of the four Collaboration Targets
if defined milestones are achieved, as well as royalties on net sales associated with any Collaboration Target. On December
17,  2020,  BMS  designated  one  of  the  four  Collaboration  Targets  as  a  candidate  to  advance  into  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
twelve-month period ended December 31, 2020.

The amended BMS CLA does not extend the initial research term. BMS may place purchase orders to provide
limited services primarily related to analytical and development efforts in respect of the four Collaboration Targets. BMS
may request such services for a period not to exceed the earlier of (i) the completion of all activities under a Research Plan
and  (ii)  either  (A)  three  years  after  the  last  replacement  target  has  been  designated  by  BMS  during  the  one-year
replacement  period  following  the  amended  BMS  CLA  effective  date  or  (B)  three  years  if  no  replacement  targets  are
designated during this one-year period and BMS continues to reimburse us for these services.

 For as long as any of the four Collaboration Targets are being advanced, BMS may place a purchase order to be
supplied with research, clinical and commercial supplies. Subject to the terms of the amended BMS CLA, BMS has the
right  to  terminate  the  research,  clinical  and  commercial  supply  relationships,  and  has  certain  remedies  for  failures  of
supply, up to and including technology transfer for any such failure that otherwise cannot be reasonably resolved. Both we
and  BMS  may  agree  to  a  technology  transfer  of  manufacturing  capabilities  pursuant  to  the  terms  of  the  amended  BMS
CLA.

We have agreed to certain restrictions on our ability to work independently of the collaboration, either directly or
indirectly through any affiliate or third party, on certain programs that would be competitive with a Collaboration Target.
We have agreed to indication exclusivity for the current four Collaboration Targets. BMS may add or change the exclusive
indications  in  the  process  of  replacing  Collaboration  Targets  as  described  above.  We  can  opt  out  of  the  indication
exclusivity by giving up certain economic rights under the amended BMS CLA for each such indication that is affected by
us  opting  out.  If  we  opt  out  of  an  exclusive  indication,  we  could  pursue  other  targets  for  such  indication  other  than  a
Collaboration Target.

The amended BMS CLA also terminated two warrants to increase BMS ownership in the Company up to 19.9%
through  purchasing  a  specific  number  of  our  ordinary  shares  following  the  designation  of  a  seventh,  and  a  tenth
Collaboration Target, respectively. 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,  uniQure  (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 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. We have not consummated any change of control transaction
as of December 31, 2020 that would obligate us to make a payment to BMS.

The  amended  BMS  CLA  did  not  change  any  of  the  provisions  of  the  Investor  Agreement  with  BMS  that  we
entered  into  in  2015.  We  have  granted  BMS  certain  registration  rights  that  allow  BMS  to  require  us  to  register  our
securities beneficially held by BMS under the U.S. Securities Exchange Act of 1934, as amended (“Exchange Act”). BMS
may make up to two such demands for us to register the shares, provided that we may deny such demand if (i) the market
value  of  the  shares  to  be  registered  is  less  than  $10.0  million  (provided  however,  if  BMS  holds  less  than  $10.0  million
worth of our shares, we must comply with their demand for registration), (ii) we certify to BMS that we plan to effect a
registration within 120 days of their demand or we are engaged in a transaction that would be required to be disclosed in a
registration statement and that is not reasonably practicable to be disclosed at that time, or (iii) we have already effected
one registration statement within the twelve months preceding BMS’s demand for registration. 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.

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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, 2020 BMS holds 5.3%). Without our prior consent, BMS may not
sell or dispose any of its current ordinary shares.

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,  the  closing  of  a  transaction  that  provides  BMS  exclusive  and
absolute discretion to vote our shares it beneficially holds, or the termination of the amended BMS CLA for breach by us.

Term loan facility

As of December 31, 2020, a $35.0 million term loan was outstanding in accordance with the Second Amended

and Restated Loan and Security Agreement (“2018 Amended Facility”) between us and Hercules.

On  January  29,  2021  we  and  Hercules  entered  into  amendments  to  the  2018  Amended  Facility  (the  “2021
Amended  Facility”).  Pursuant  to  the  2021  Amended  Facility,  Hercules  agreed  to  make  additional  term  loans  in  the
maximum aggregate amount of $100.0 million (the “2021 Term Loan”), increasing the aggregate principal amount of the
term  loan  facility  from  $35.0  million  to  up  to  $135.0  million.  On  January  29,  2021  we  drew  down  $35.0  million  of  the
2021 Term Loan. We may draw down the remaining $65.0 million under the 2021 Term Loan in a series of one or more
advances of not less than $20.0 million each until December 15, 2021. Advances under the 2021 Term Loan bear 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 and
all accrued but unpaid interest on advances under the 2021 Term Loan is due on June 1, 2023, which date may be extended
by us by up to two twelve-month periods. Advances under the 2021 Term Loan may not be prepaid until six-months after
the Closing Date, following which we may prepay all such advances without charge.

In  addition  to  the  2021  Term  Loan,  the  amendment  also  extends  the  interest  only  payment  period  of  the

previously funded $35.0 million term loan from January 1, 2022 to June l, 2023.

COVID-19 measures

The  coronavirus  disease  (“COVID-19)  caused  by  the  severe  acute  respiratory  syndrome  coronavirus  2  (“Sars-
CoV 2 virus) was characterized as a pandemic by the World Health Organization (“WHO”) on March 11, 2020. During late
2020 various, potentially more infectious, variants of the Sars-CoV 2 virus causing COVID-19 were identified.

Starting  March  2020,  we  implemented  measures  to  address  the  impact  of  COVID-19  on  our  business.  We
mandated a work-from-home policy for all non-essential employees at our Amsterdam and Lexington facilities when the
pandemic began. We implemented a series of protocols governing the operations of our Lexington facility to comply with
the requirements of the various orders and guidance from the Commonwealth of Massachusetts and other related orders,
guidance,  laws,  and  regulations.  We  supported  our  employees  in  setting  up  a  healthy  and  efficient  remote  working
environment. In conjunction with implementing this policy, we accelerated the roll-out of several information technology
security  measures,  such  as  dual  factor  authentication,  to  address  the  increased  risks  to  which  we  might  be  exposed  as  a
result  of  remote  working  conditions.  In  addition,  we  conducted  awareness  training  around  cybersecurity  for  critical
functions  involved  in  making  payments  to  vendors  such  as  finance  and  supply  chain.  We  continue  to  monitor  local
government rules and recommendations and office protocols will be aligned with these rules and recommendations.

We conduct frequent status video-meetings of local management at our two sites as well as leadership-team video
meetings to implement these measures and to monitor the evolving situation. In addition, we inform our employees through
periodic newsletters and have organized virtual local and global townhalls to share information and provide direction and
support to our employees.

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We started to reopen the Amsterdam and Lexington facilities in phases, in line with the reopening plans that are
prescribed  by  the  local  government.  Between  June  1,  2020  until  September  29,  2020,  we  encouraged  our  Amsterdam
employees to work a minimum of two days per week from the office, and approximately 50% of local staff worked on site
during that period. As of September 29, 2020, we reinstated the mandatory work-from-home policy that was initiated in
March in Amsterdam to align with the updated Dutch government’s measures. Employees based in Amsterdam who cannot
perform  their  duties  outside  of  our  Amsterdam  facility  will  continue  to  work  at  our  Amsterdam  facility.  We  adapted  to
operate  our  laboratories  at  our  Amsterdam  site  to  comply  with  social  distancing  rules  and  to  ensure  the  health  and
wellbeing  of  our  employees  under  the  current  circumstances.  All  other  employees  in  Amsterdam  will  work  from  home
through at least the end of August 2021, partly in conjunction with the ongoing expansion of our laboratory space.

As  a  biopharma  research  and  development  company,  we  were  deemed  to  provide  essential  services  under  the
“stay  at  home”  advisory  that  was  issued  by  the  Governor  of  Massachusetts  on  March  23,  2020  and  we  therefore  have
maintained  our  manufacturing  operations  at  our  Lexington  site.  To  ensure  adequate  social  distancing  in  our  Lexington
facility, our COVID-19 protocols generally have limited occupancy to numbers below those allowed by the Massachusetts
COVID-19 guidelines. In our Lexington facility, we currently have implemented an occupancy limitation of approximately
25%. Our employees that cannot perform their duties outside of our Lexington facility continue to work at our Lexington
facility.  All  other  employees  are  required  to  work  remotely  to  the  extent  possible  through  at  least  the  end  of  the  second
quarter  of  2021.  Our  actual  occupancy  at  the  Lexington  facility  has  been  less  than  approximately  25%  of  our  permitted
occupancy during all phases of the Massachusetts reopening plan. We have also implemented a mandatory COVID-19 PCR
testing  protocol  effective  February  11,  2021  that  requires  employees  to  have  tested  negative  for  COVID-19  prior  to
entering the Lexington facility.

We have adapted our ongoing clinical research activities based on the directions and flexibility provided by the
“FDA  Guidance  on  Conduct  of  Clinical  Trials  of  Medical  Products  during  COVID-19  Pandemic”  issued  on  March  18,
2020 and updated throughout the pandemic to minimize any risk, disruption, or delay in either patient dosing or follow-up
visits.  These  procedures  occurred  after  a  postponement  that  resulted  from  the  COVID-19  pandemic  and  the  associated
states of emergency declarations in the United States.

The  broader  implications  of  COVID-19  on  our  results  of  operations  and  overall  financial  performance  remain
uncertain. The COVID-19 pandemic and its adverse effects have become more prevalent in the locations where we, and
our third-party business partners conduct business. While we have experienced disruptions in our operations as a result of
COVID-19,  we  are  adapting  to  the  current  environment  to  minimize  the  effect  to  our  business.  However,  we  may
experience more pronounced disruptions in our operations in the future.

Organization

On September 14, 2020, we appointed Ricardo Dolmetsch, Ph.D. as President, Research and Development. Dr.
Dolmetsch  succeeded  Sander  van  Deventer,  M.D.,  Ph.D.,  our  former  Executive  Vice  President,  Research  and  Product
Development. On October 14, 2020, our Chief Medical Officer, Robert Gut, M.D., Ph.D., resigned to allow him to return
as a non-executive director on our Board of Directors. Dr. Gut was appointed to our Board of Directors as a non-executive
director at an extraordinary meeting of shareholders on December 1, 2020.

On  June  17,  2020,  our  shareholders  voted  to  approve  the  appointment  of  Leonard  E.  Post,  Ph.D.  as  a  non-
executive director of the Board of Directors. Dr. Post replaced Dr. David Schaffer, whose term as a non-executive director
of  the  Board  of  Directors  ended  on  the  same  date.  Dr.  Post  has  also  assumed  the  role  of  chair  of  our  Research  &
Development Committee of the Board of Directors.

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Our Mission and Strategy

Our  mission  is  to  build  an  industry-leading,  fully  integrated,  and  global  company  that  leverages  its  validated
technology  and  manufacturing  platform  to  deliver  transformative  gene  therapy  products  to  patients  with  serious  unmet
medical needs.

Our strategy to achieve this mission is to:

Advance  the  development  of  etranacogene  dezaparvovec  (AMT-061),  a  potentially  best-in-class  treatment  of
hemophilia  B.  Etranacogene  dezaparvovec  combines  the  potential  advantages  of  AAV5  with  an  enhanced  Padua-FIX
transgene, and may provide optimized clinical and tolerability benefits to all, or nearly all patients with hemophilia B. In
March 2020, we completed dosing of 54 patients in our Phase III HOPE-B pivotal study.

Maintain  our  leadership  position  in  commercial-scale  AAV  manufacturing.  We  have  established  cGMP,
commercial-scale  manufacturing  capabilities  for  AAV-based  gene 
in  our  state-of-the-art  Lexington,
Massachusetts  facility.  We  believe  the  modularity  of  our  platform  provides  us  with  distinct  advantages,  including  the
potential for reduced development risk and faster times to market.

therapies 

Build  a  pipeline  of  gene  therapy  programs  focused  on  rare  and  orphan  diseases  targeting  liver-directed  and
central-nervous  system  (“CNS”)  diseases.  Beyond  our  lead  clinical  program  for  hemophilia  B  and  our  Huntington’s
disease  program,  we  have  a  pipeline  of  additional  AAV-based  gene  therapy  programs  in  various  stages  of  preclinical
development.  We  are  leveraging  our  leading  technology  platform,  which  includes  novel  vectors,  promoters,  and
manufacturing  capabilities,  to  develop  gene  therapies  primarily  focused  on  rare,  monogenic  liver-directed,  and  CNS
disorders as well as cardiovascular diseases.

Leverage the favorable immunogenicity profile of AAV5-based gene therapies to develop multiple products. We
have developed extensive experience with our AAV5-based gene therapies, including in five clinical trials in multiple liver-
directed and CNS diseases. During these clinical trials, no patient treated with AAV5-based gene therapies experienced a
confirmed  immune  response  to  the  AAV5  capsid  or  complications  associated  with  T-cell  activation.  Additionally,  the
AAV5  capsid  has  demonstrated  a  low  avidity  to  pre-existing  neutralizing  antibodies  (“Nab”),  which  may  enable  all,  or
nearly all patients to be eligible for treatment with AAV5-based gene therapies.

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  proprietary  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 (i) miQURE, our one-time administered gene silencing platform,
(ii) tailored vectors, promoters, and other enhancers; (iii) optimized delivery and administration techniques; and (iv) novel
transgenes.  These  technologies  are  developed  both  in-house  by  our  experienced  research  team  in  Amsterdam,  the
Netherlands, as well as via collaborations with third parties.

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,  including  the  novel  Padua-FIX  gene  we  utilize  in
etranacogene dezaparvovec for hemophilia B; (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.

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Our Product Candidates

A summary of our key development programs is provided below:

Liver-directed diseases

Hemophilia B (etranacogene dezaparvovec)

Hemophilia B Disease and Market Background

Hemophilia  B  is  a  serious  and  rare  inherited  disease  in  males  characterized  by  insufficient  blood  clotting.  The
condition  can  lead  to  repeated  and  sometimes  life-threatening  episodes  of  external  and  internal  bleeding  following
accidental trauma or medical interventions. Severe hemophilia is characterized by recurrent episodes of spontaneous joint
bleeds that cause long-term damage to the joints resulting in disabling arthropathy. Bleeds may be fatal if they occur in the
brain. The deficient blood clotting results from the lack of functional human Factor IX (“hFIX”). Treatment of hemophilia
B  today  consists  of  prophylactic  or  on-demand  protein  replacement  therapy,  in  which  one  to  three  times  weekly
intravenous  administrations  of  plasma-derived  or  recombinant  hFIX  are  required  to  prevent  bleeding  and  once  daily
infusions in case bleeding occurs. Hemophilia B occurs in approximately 1 out of 30,000 live male births.

CSL Behring collaboration

On June 24, 2020, we entered into the CSL Behring Agreement pursuant to which CSL Behring would receive
exclusive global rights to etranacogene dezaparvovec. Pursuant to the CSL Behring Agreement, we would be responsible
for  the  completion  of  the  HOPE-B  clinical  trial,  manufacturing  process  validation,  and  the  manufacturing  supply  of
etranacogene  dezaparvovec  until  such  time  that  these  capabilities  may  be  transferred  to  CSL  Behring  or  its  designated
contract manufacturing organization. Concurrently with the execution of the CSL Behring Agreement we and CSL Behring
entered into a development and commercial supply agreement, pursuant to which, among other things, we would supply
etranacogene  dezaparvovec  to  CSL  Behring  at  an  agreed-upon  price.  Clinical  development  and  regulatory  activities
performed by us pursuant to the CSL Behring Agreement would be reimbursed by CSL Behring. CSL Behring would be
responsible  for  global  regulatory  submissions  and  commercialization  requirements  for  etranacogene  dezaparvovec.  The
CSL Behring Agreement continues to be subject to antitrust review in the U.S. and as such is not yet effective.

Our Development of etranacogene dezaparvovec for Hemophilia B

We  are  currently  developing  etranacogene  dezaparvovec,  a  gene  therapy  for  patients  with  hemophilia  B  that  is
designed  to  restore  FIX  activity,  an  essential  protein  for  blood  clotting.  Etranacogene  dezaparvovec  includes  an  AAV5
vector incorporating the FIX-Padua variant (“FIX-Padua”). Etranacogene dezaparvovec is identical in structure to our first-
generation hemophilia B product candidate, AMT-060, apart from two nucleotide substitutions in the coding sequence for
FIX. The FIX-Padua variant expresses a protein with a single amino acid substitution that has been reported in multiple
preclinical and nonclinical studies to provide an approximate eight-to nine-fold increase in FIX activity compared to the
wild-type FIX protein, which was incorporated in AMT-060. All other critical quality attributes of AMT-061 are expected
to  be  comparable  to  those  of  AMT-060,  as  AMT-061  utilizes  the  same  AAV5  capsid  and  proprietary  insect  cell-based
manufacturing platform.

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Etranacogene  dezaparvovec 

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.

Our goal for etranacogene dezaparvovec is to develop a gene therapy with the following profile:

-
-
-
-

long-term safety, including a favorable immunogenicity profile;
predictable, sustained and potentially curative increases in FIX activity;
significant reductions in both bleeding rates and the need for FIX replacement therapy; and
broad patient eligibility, including the potential to treat all or nearly all patients with hemophilia B.

AAV5-based gene therapies have been used in a multitude of clinical trials, including five clinical trials conducted
by  us  in  patients  with  hemophilia  B  and  other  disorders.  No  patient  treated  in  clinical  trials  with  our  AAV5-based  gene
therapies  has  experienced  any  confirmed,  cytotoxic  T-cell-mediated  immune  response  to  the  capsid.  An  independent
clinical  trial  has  demonstrated  that  AAV5  has  the  lowest  prevalence  of  pre-existing  neutralizing  antibodies  compared  to
other AAV vectors. Data from our clinical, preclinical, and nonclinical studies suggest that all, or nearly all patients may be
eligible for treatment with etranacogene dezaparvovec.

The  FDA  has  agreed  that  etranacogene  dezaparvovec  will  fall  under  the  existing  Breakthrough  Therapy
Designation  and  IND  for  AMT-060,  and  the  EMA  has  also  agreed  that  etranacogene  dezaparvovec  will  fall  under  the
PRIME designation.

In  June  2018,  we  initiated  our  Phase  III  HOPE-B  pivotal  trial  of  etranacogene  dezaparvovec.  The  trial  is  a
multinational, multi-center, open-label, single-arm study to evaluate the safety and efficacy of etranacogene dezaparvovec.

In March 2020, we completed dosing of the 54 patients in the HOPE-B trial. The targeted number of patients to be
dosed  per  the  clinical  trial  protocol  was  50.  As  set  forth  previously,  we  have  implemented  and  continue  to  implement
various measures to allow us to closely monitor the trial within the guidance provided by the FDA regarding the impact of
the COVID-19 coronavirus pandemic to minimize any risk or disruption in patient follow-up visits. The adult hemophilia B
patients,  who  were  classified  as  severe  or  moderately  severe,  were  enrolled  in  a  six-month  observational  period  prior  to
dosing during which time they continued to use their current standard of care to establish a baseline control. After the six-
month lead-in period, patients received a single IV-administration of etranacogene dezaparvovec. Patients enrolled in the
HOPE-B trial were tested for the presence of pre-existing neutralizing antibodies to AAV5 but not excluded from the trial
based  on  their  titers.  The  primary  endpoints  of  the  study  are  based  on  the  FIX  activity  level  achieved  following  the
administration of etranacogene dezaparvovec after 26 weeks and 52 weeks after dosing as well as annualized bleed rates
during the 52 weeks after dosing.

In December 2020, we announced top-line data from the HOPE-B trial. The 26-week follow-up date from the trial
showed that FIX activity in the 54 patients increased after dosing from ≤ 2% to a mean of 37.2% at 26 weeks, meeting a
first primary endpoint of the HOPE-B trial. No correlation between pre-existing neutralizing antibodies and FIX activity
was  found  in  patients  with  neutralizing  antibody  titers  up  to  678.2,  a  range  expected  to  include  more  than  95%  of  the
general population; one patient with a neutralizing antibody titer of 3,212.3 did not show an increase in FIX activity. Less
than 1% of the general population is expected to have neutralizing antibody titers of greater than 3,000.

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 During the 26-week period after dosing, 15 patients (28%) reported a total of 21 bleeding events, representing a
reduction  of  83%  compared  to  the  123  bleeding  events  reported  by  38  patients  (70%)  during  the  observational  lead-in
phase  of  the  trial.  Total  bleeds  include  any  bleeding  event  reported  after  the  treatment  of  etranacogene  dezaparvovec,
including spontaneous, traumatic, and those associated with unrelated medical procedures, whether or not FIX treatment
was required. Of the total bleeding events reported during the 26-week period after dosing, only three were classified as
spontaneous bleeds requiring treatment, representing a reduction of 92% compared to the 37 such bleeding events reported
during the observational lead-in phase. Mean annualized usage of FIX replacement therapy, a secondary endpoint in the
clinical  trial,  declined  by  96%  during  the  26-week  period  after  dosing  compared  to  the  observational  lead-in  phase.
Etranacogene dezaparvovec was generally well-tolerated. As of the November 2020 cut-off date, most adverse events were
classified as mild (81.5%). The most common events included transaminase elevation treated with steroids per protocol (9
patients;  17%),  infusion-related  reactions  (7  patients;  13%),  headache  (7  patients;  13%)  and  influenza-like  symptoms  (7
patients; 13%). Liver enzyme elevations resolved with a tapering course of corticosteroids and FIX activity remained in the
mild  range  in  the  steroid  treated  patients.  No  relationship  between  safety  and  neutralizing  antibody  titers  was  observed.
Based on interactions with the FDA and the EMA, we plan to incorporate FIX activity and bleeding rates at 52 weeks as
additional co-primary endpoints in the study.

On December 21, 2020, our clinical trials of etranacogene dezaparvovec, including our HOPE-B trial were placed
on clinical hold by the FDA. The clinical hold was initiated following the submission of a safety report in mid-December
relating to a possibly related serious adverse event associated with a preliminary diagnosis of HCC, a form of liver cancer,
in  one  patient  in  the  HOPE-B  trial  that  was  treated  with  etranacogene  dezaparvovec  in  October  2019.  The  patient  has
multiple risk factors associated with HCC, including a twenty-five-year history of HCV, HBV, evidence of non-alcoholic
fatty liver disease and advanced age. Chronic infections with hepatitis B and C have been associated with approximately
80% of HCC cases.

The  liver  lesion  was  detected  during  a  routine  abdominal  ultrasound  conducted  as  part  of  the  required  study
assessments in patients at one-year post dosing. A surgical resection of the lesion has occurred, and an analysis of the tissue
samples  was  initiated  in  early  2021.  On  February  19,  2021,  we  reported  initial  results  from  this  analysis  to  the  FDA  in
accordance with pharmacovigilance requirements. We are gathering final data from these molecular analyses and will be
preparing a detailed response to the FDA’s clinical hold questions regarding this event. Currently, we do not have adequate
data to determine a possible causal relationship, especially in the context of the other known risk factors. We currently do
not anticipate any impact on our regulatory submission timelines, including the filing of a BLA.

No other cases of HCC have been reported in our clinical trials conducted in more than 67 patients in hemophilia

B, with some patients dosed more than 5 years ago.

In  September  2018,  we  completed  the  dosing  of  a  Phase  IIb  dose-confirmation  study  of  etranacogene
dezaparvovec.  The  Phase  IIb  study  is  an  open-label,  single-dose,  single-arm,  multi-center  trial  being  conducted  in  the
United  States.  The  objective  of  the  study  was  to  evaluate  the  safety  and  tolerability  of  etranacogene  dezaparvovec  and
confirm  the  dose  based  on  FIX  activity  at  six  weeks  after  administration.    Three  patients  with  severe  hemophilia  were
enrolled in this study and received a single intravenous infusion of 2x1013 genome copies per kilogram (“gc/kg”). Patients
were evaluated for the presence of pre-existing neutralizing antibodies to AAV5 but were not excluded from the trial on
this basis. We have followed the patients for more than two years to assess FIX activity, bleeding rates and usage of FIX
replacement  therapy,  and  will  monitor  the  three  patients  for  a  total  of  five  years  to  evaluate  the  safety  of  etranacogene
dezaparvovec.

In  December  2018,  the  study’s  Data  Monitoring  Committee  evaluated  initial  data  from  the  Phase  IIb  study  and

confirmed the dose of 2x1013 gc/kg for the Phase III pivotal trial.

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In February, May, July, and December 2019, and in December 2020, we presented updated data from the Phase
IIb  dose-confirmation  study  of  etranacogene  dezaparvovec.  The  most  recent  data  that  we  announced  in  December  2020
from the Phase IIb study of etranacogene dezaparvovec show that all three patients experienced increasing and sustained
FIX  levels  after  a  one-time  administration  of  etranacogene  dezaparvovec.  Mean  FIX  activity  was  44.2%  of  normal  two
years after administration, exceeding threshold FIX levels generally considered sufficient to significantly reduce the risk of
bleeding events. The first patient achieved FIX activity of 44.7% of normal, the second patient was 51.6% of normal and
the third patient was 36.3% of normal. The second and third patients had previously screen-failed and were excluded from
another gene therapy study due to pre-existing neutralizing antibodies to a different AAV vector. At two years after dosing,
two of the three participants remain free from bleeds and use of FIX replacement therapy. A single bleed has been reported
in  one  participant,  who  has  used  a  total  of  two  FIX  infusions  (excluding  surgery).  All  patients  have  remained  free  of
prophylaxis in the two years since receiving etranacogene dezaparvovec.

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,  which  covers
compositions of FIX-Padua nucleic acids and polypeptides (proteins), as well as their therapeutic uses.

On  May  29,  2018,  the  U.S.  Patent  and  Trademark  Office  (“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. The FIX Padua variant is a FIX
protein carrying a leucine at the R338 position, often called the "FIX-Padua" or "Padua mutant".  

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  June  13,  2018,  we  were  granted  European  Patent  2337849  directed  to  a  FIX  polypeptide  protein.  The
opposition  period  with  respect  to  such  patent  expired  on  March  13,  2019,  by  which  time  five  parties  had  filed  an
opposition. On July 25, 2019, we submitted responses to such oppositions with the European Patent Office (“EPO”). Oral
proceedings  were  scheduled  for  June  and  July  2020  but  were  postponed  due  to  COVID-19.  New  dates  for  virtual  oral
proceedings  have  been  set  for  May  2021.  In  addition,  on  May  15,  2019,  a  divisional  European  patent  application  in  the
FIX-Padua family, EP 3252157, was refused. In September 2019, we filed a notice of appeal with respect to such refusal.
We  are  also  pursuing  a  European  divisional  patent  application  that  was  filed  on  May  14,  2019.  Both  in  the  U.S.  and  in
Europe,  we  have  pending  divisional  applications  still  in  prosecution  phases.  The  appeal  process  has  been  delayed  as  a
result of the COVID-19 pandemic, and we do not currently know when the appeal is likely to be resolved.

On January 4, 2020, a petition seeking Inter Partes Review of U.S. Patent No. 9,249,405 (the “’405 Patent”) was
filed  by  Pfizer,  Inc.  (the  “IPR  Proceeding”).  The  petition  sought  to  invalidate  claims  6  and  9-15  of  the  ‘405  Patent.  On
April  17,  2020,  we  filed  our  preliminary  response  to  the  petition,  disclaiming  claims  6  and  9-13  of  the  ‘405  patent  and
otherwise requesting the denial of the petition. On July 13, 2020, the United States Patent and Trademark Office issued its
decision to institute the Inter Partes Review. On October 13, 2020, we filed a motion to amend the patent claims at issue in
the proceeding. On January 13, 2021, Pfizer filed a brief in opposition to our motion to amend the claims. On February 3,
2021 the Patent Appeals Board of the USPTO (the “PTAB”) provided its preliminary guidance with respect to the proposed
amended claims, which stated among other things that the proposed amended claims were not anticipated but were obvious
in light of the cited prior art.  On February 16, 2021 and in response to the preliminary guidance, we moved to dismiss our
motion to amend the claims before the PTAB and requested an adverse judgement in the IPR Proceeding. As a result, we
expect to maintain the currently issued and unchallenged claims of the ‘405 Patent and pursue additional claims based on
our proposed amended claims in continuation applications before the USPTO.

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Phase I/II Clinical Trial of AMT-060

In the third quarter of 2015, we initiated a Phase I/II clinical trial of AMT-060, our first-generation hemophilia B
product  candidate,  in  patients  with  severe  or  moderately-severe  hemophilia  B.  AMT-060  consists  of  an  AAV5  vector
carrying a codon-optimized, wild-type, human FIX gene cassette licensed from St. Jude Children’s Research Hospital. The
study is a five-year, open-label, uncontrolled, single-dose, dose-ascending multi-center trial that includes two cohorts, with
the low-dose cohort using a treatment of 5x1012 gc/kg and the second-dose cohort using 2x1013 gc/kg. We enrolled five
patients into the low dose cohort in the third quarter of 2015. Another five patients were enrolled into the high dose cohort
between March and May 2016.

In December 2020, we presented five-year follow-up data related to this Phase I/II clinical trial. All 10 patients
enrolled continue to show long-term clinical benefit, including sustained increases in FIX activity, reduced usage of FIX
replacement therapy, and decreased bleeding frequency. At up to five years of follow-up, AMT-060 continues to be well-
tolerated, with no new treatment-related adverse events since the last reported data and no development of inhibitors during
the study.

All five patients in the second dose cohort of 2x1013 gc/kg (the same dose being studied in the Phase III HOPE-B
study of etranacogene dezaparvovec) continue to be free of routine FIX replacement therapy at four-and-a-half years after
treatment. Based on the six months of data collected during the fifth year of follow-up, the mean annualized bleeding rate
was zero compared to an average of four bleeds during the year prior to treatment, representing a 100% reduction. During
this  same  period,  the  usage  of  FIX  replacement  therapy  declined  to  zero  compared  to  354,800  IU  in  the  year  prior  to
treatment, representing a 100% reduction. Mean FIX activity over 4.5 years was 7.4% (compared to 7.5% at three and a
half years, 7.9% in the third year, 8.4% in the second year and 7.1% in the first year), while in the lower dose cohort, mean
FIX activity was 5.2% over 5 years since treatment.

Fabry disease program (AMT-190)

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.

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. 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.

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Our Development of AMT-190 for Fabry Disease

In September 2020, we selected a lead gene therapy candidate (AMT-190) for the treatment of Fabry disease to
advance into IND-enabling studies. 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-190 demonstrated the most robust and sustained
increases in GLA activity.

Hemophilia A program (AMT-180)

In  June  2020,  we  announced  that  we  plan  to  de-prioritize  our  research  program  of  AMT-180  for  patients  with
hemophilia  A,  as  part  of  our  effort  to  focus  on  those  gene  therapy  programs  that  have  the  greatest  potential  to  improve
patients’ lives and generate long-term value for shareholders.

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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  gene  therapy  candidate  targeting  Huntington’s  disease  that  utilizes  an  AAV  vector  carrying  an
engineered micro ribonucleic acid (“miRNA”) designed to silence HTT and exon 1 HTT, a potentially highly toxic protein
fragment  that  may  also  contribute  to  disease  pathology.  AMT-130  comprises  a  recombinant  AAV5  vector  carrying  a
deoxyribonucleic acid (“DNA”) cassette, encoding a miRNA that non-selectively lowers or knocks-down HTT and exon 1
HTT  in  Huntington’s  disease  patients.  AMT-130  was  developed  using  our  miQURE  technology,  a  proprietary,  one-time
administered  gene  silencing  platform.  AMT-130  has  received  orphan  drug  designation  from  the  FDA  and  Orphan
Medicinal  Product  Designation  from  the  EMA.  AMT-130  is  intended  to  be  administered  directly  into  the  brain  via  a
stereotactic, magnetic resonance imaging guided catheter.

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.

In  April  2018,  we  presented  an  overview  of  preclinical  data  establishing  proof-of-concept  for  AMT-130  at  the
2018  American  Academy  of  Neurology  Annual  Meeting  in  Los  Angeles,  California.  Data  from  multiple  studies  in
Huntington's disease animal models across three different species showed that a single intraparenchymal administration of
AMT-130 into the striatum, resulted in a dose-dependent and sustained reduction of mutant huntingtin protein (“mHTT”) in
both the deep structures of the brain and the cortex. Specifically, we presented data from the ongoing preclinical study in
transgenic minipigs, one of the largest Huntington's disease animal models available, demonstrating significant reductions
in  human  mHTT  by  a  median  of  68%  in  the  striatum  and  a  median  of  47%  in  the  frontal  cortex  at  6  months  after
administration of AMT-130.

In January 2019, our IND application for AMT-130 was cleared by the FDA and in the fourth quarter of 2019 we
initiated  patient  screening  for  a  Phase  I/II  study.  The  Phase  I/II  protocol  is  a  randomized,  imitation  surgery-controlled,
double-blinded study conducted at three surgical sites, and multiple referring, non-surgical sites in the U.S. The primary
objective of the study is to evaluate the safety, tolerability and efficacy of AMT-130 at two doses.

In February 2019, we presented new preclinical data at the 14th Annual CHDI Huntington’s disease Therapeutics
Conference  that  illustrate  the  therapeutic  potential  of  AMT-130  in  restoring  function  of  damaged  brain  cells  in
Huntington’s disease. In that study, AMT-130 was generally well-tolerated and resulted in a sustained reduction of mutant
huntingtin protein.

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In June 2020, we announced the completion of the first two patient procedures in the Phase I/II clinical trial of
AMT-130 for the treatment of Huntington’s disease. These procedures occurred after a postponement that resulted from the
COVID-19 pandemic and the associated states of emergency declarations in the United States. The Phase I/II protocol is a
randomized,  imitation  surgery-controlled,  double-blinded  study  conducted  at  three  surgical  sites,  and  multiple  referring,
non-surgical sites in the U.S. The primary objective of the study is to evaluate the safety, tolerability, and efficacy of AMT-
130 at two doses.

On  September  25,  2020,  we  announced  that  the  independent  DSMB  overseeing  the  Phase  I/II  clinical  trial  of
AMT-130 for the treatment of Huntington’s disease had met and reviewed 90-day safety data from the first two patients
enrolled in the trial. No significant safety concerns were noted to prevent further dosing.

On October 13, 2020, we announced the completion of the third and fourth patient procedures in the Phase I/II

clinical trial.

On February 8, 2021, we announced that the DSMB had met and reviewed the six-month safety data from the
first two enrolled patients and the 90-day safety data from the next two enrolled patients in the study. No significant safety
concerns were noted to prevent further dosing, and the final six patients in the first cohort are now cleared for enrollment.

Spinocerebellar Ataxia Type 3 program

Spinocerebellar Ataxia type 3 and Market Background

Spinocerebellar  Ataxia  type  3  (“SCA3”),  also  known  as  Machado-Joseph  disease,  is  a  central  nervous  system
disorder caused by a cytosine-adenine-guanine (“CAG”)-repeat expansion in the ATXN3 gene that results in an abnormal
form of the protein ataxin-3. Patients with SCA3 experience brain degeneration that results in movement disorders, rigidity,
muscular  atrophy,  and  paralysis.  There  is  currently  no  treatment  available  that  slows  the  progressive  course  of  this
potentially lethal disease.

Prevalence  of  SCA3  is  estimated  to  be  one  to  two  per  100,000  with  significant  geographical  and  ethnic
variations,  with  the  highest  prevalence  rates  observed  in  the  Azores  (Flores  Island  (1/239)),  the  intermediate  prevalence
rates  observed  in  Portugal,  Germany,  the  Netherlands,  China  and  Japan,  and  the  lower  prevalence  observed  in  North
America, Australia, and India. SCA3 is the most common form of autosomal dominant cerebellar ataxia (“ADCA”) type 1
in most genetically characterized populations.

Our preclinical SCA3 program (AMT-150)

AMT-150  is  a  one-time,  intrathecally-administered,  AAV  gene  therapy  incorporating  our  proprietary  miQURE
silencing  technology  that  is  designed  to  halt  ataxia  in  early  manifest  SCA3  patients.  In  an  in-vitro  study  with  human
induced pluripotent stem (“IPS”) derived neurons, AMT-150 has been shown to lower the human ataxin-3 protein by 65%,
without any off-target effects. We also performed a proof-of-concept in-life study in SCA3 mice demonstrating that AMT-
150 was able to lower toxic ataxin-3 protein by up to 53% in the cerebellum and up to 65% in the brain stem after a single
administration. Further studies in non-human primates (“NHP”) demonstrate the ability to distribute and express a reporter
gene  in  the  most  degenerated  brain  regions  in  SCA3.  In  these  preclinical  studies,  a  single  administration  of  AMT-150
resulted  in  sustained  expression  and  efficient  processing  with  on-target  engagement.  Additionally,  AMT-150  lacked  off-
target activity in these studies.

At  the  2019  American  Academy  of  Neurology  Annual  Meeting,  we  presented  preclinical  data  on  AMT-150
demonstrating  mechanistic  proof-of-concept  of  the  non-allele-specific  ataxin-3  protein-silencing  approach  by  using
artificial  miRNA  candidates  engineered  to  target  the  ataxin-3  gene  in  a  SCA3  knock-in  mouse  model.  In  this  proof-of-
concept  study,  a  single  AMT-150  injection  in  the  cerebrospinal  fluid  resulted  in  AAV  transduction  and  mutant  ataxin-3
lowering at the primary sites of disease neuropathology, the cerebellum (up to 53%) and the brainstem (up to 65%).

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In  May  2020,  we  presented  preclinical  data  at  the  American  Society  of  Gene  and  Cell  Therapy  (“ASGCT”)
Annual  Meeting,  on  our  gene  therapy  candidate  SCA3.  In  an  in  vivo  preclinical  study,  six  NHP  received  a  one-time
injection  of  AMT-150  via  the  cisterna  magna  to  assess  expression  and  distribution.  Samples  taken  after  eight  weeks
showed widespread transduction of the brain and spinal cord, with the highest genome copies found in the posterior fossa
and cortical regions. In other preclinical studies, researchers evaluated AMT-150 in SCA3 mouse models, as well as human
induced pluripotent stem cell (“iPSC”)-derived neurons and astrocytes, to investigate potential off-target effects of AAV5-
micro ataxin type 3 (“miATXN3”). The iPSC-derived cell cultures, which were derived from two SCA3 patients, represent
the most disease-relevant cell type for therapeutic targeting of AMT-150. A clear dose-dependent expression of miATXN3
was observed in the iPSC-derived neurons and astrocytes transduced with AMT-150. Mature miATXN3 molecules were
also associated with extracellular vesicles that strongly correlated with the dose and miATXN3 expression, suggesting the
potential  therapeutic  spread  of  the  engineered  miATXN3.  Additionally,  AMT-150  demonstrated  ATXN3  knockdown  in
human neurons and various SCA3 mouse models with subsequent neuropathology improvement.

In September 2020, we initiated a safety and toxicology study of AMT-150 in NHP.

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  DNA;  (ii)  the  promoter,  or  the  DNA
sequence that drives the expression of the transgene; and (iii) the transgene, or therapeutic gene.

We  dedicate  significant  effort  to  designing  and  screening  novel  AAV  capsids  with  the  potential  for  (i)  higher
biological potency; (ii) increased specificity and penetration of specific tissue types; and (iii) enhanced safety. We believe
we  have  significant  expertise  in  vector  engineering  and  have  created  promising  genetically  engineered  capsids  using  a
“rational design” approach.

In addition to the directed evolution approach where we screen a library of AAV mutants, we are also rationally
engineering the AAV capsids to target them to specific cells and/or tissues. Using such engineered AAV capsids will ensure
selected transduction of the targeted, desired cell type. The strategy will diminish potential off target effects.  

We  work  extensively  on  designing  synthetic  promoters  with  the  potential  of  enabling  higher  levels  of  protein
expression  in  specific  tissue  types.  A  “promoter”  is  an  essential  component  of  a  gene  therapy  construct  that  controls
expression of a therapeutic protein. Synthetic promoters, which do not exist in nature, are optimally tailored to drive gene
expression at a desired level and specificity.

To  further  tailor  gene  therapies  to  optimally  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.  

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.

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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.  We  produce  our  gene  therapies  at  our  state-of-the-art,  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.  By controlling our manufacturing, 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.    For  example,  in  transitioning  our  hemophilia  B
program  from  AMT-060  to  AMT-061,  we  were  able  to  rapidly  demonstrate  manufacturing  comparability  and
produce clinical material for our ongoing Phase III pivotal study, thereby accelerating our time to market.  

(4) High Purity. The baculovirus system eliminates the risk of introducing mammalian cell derived impurities.

(5) 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.

(6) 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.

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 United States, 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.

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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 United States 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 United
States. 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,  2020,  our  intellectual  property  portfolio  included  99  issued  or  granted  patents  and  121
pending patent applications. The geographic breakdown of our owned and exclusively in-licensed patent portfolio was as
follows:

● 26 issued U.S. patents;

● 13 granted European patents;

● 7 pending PCT patent applications;

● 18 pending U.S. patent applications;

● 20 pending European patent applications; and

● 83 pending and 60 granted patent applications in other jurisdictions.

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 Development Programs

Hemophilia B (AMT-061)

We own a patent family, including patents and patent applications, directed to the use of the Padua mutation in
hFIX  for  gene  therapy  in  etranacogene  dezaparvovec.  A  PCT  application  was  filed  on  September  15,  2009,  and  patents
have  been  issued  in  the  United  States,  Europe,  and  Canada.  Further  applications  are  pending  in  the  United  States  (three
issued patents), Europe, and Hong Kong. The issued patents include claims directed to FIX protein with a leucine at the
R338  position  of  the  protein  sequence,  nucleic  acid  sequences  coding  for  this  protein,  and  therapeutic  applications,
including gene therapy. The standard 20-year patent term of patents in this family will expire in 2029.

On June 13, 2018, we were granted European Patent 2337849 directed to a polypeptide protein. The opposition
period with respect to such patent expired on March 13, 2019, by which time five parties had filed an opposition. On July
25, 2019, we submitted responses to such oppositions with the EPO and oral proceedings with respect to such oppositions
were scheduled for June and July 2020 but were postponed due to COVID-19. New dates for virtual oral proceedings have
been set for May 2021. In addition, on May 15, 2019, a divisional European patent application in the FIX-Padua family, EP
3252157, was refused. In September 2019, we filed a notice of appeal with respect to such refusal. We are also pursuing a
European divisional patent application that was filed on May 14, 2019. Both in the U.S. and in Europe, we have pending
divisional  applications  still  in  prosecution  phases.  The  appeal  process  has  been  delayed  as  a  result  of  the  COVID-19
pandemic, and we do not currently know when the appeal is likely to be resolved.

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.

On January 4, 2020, the IPR Proceeding was filed by Pfizer, Inc. The petition sought to invalidate claims 6 and 9-
15 of the ‘405 Patent. On April 17, 2020, we filed our preliminary response to the petition, disclaiming claims 6 and 9-13
of  the  ‘405  patent  and  otherwise  requesting  the  denial  of  the  petition.  On  July  13,  2020,  the  United  States  Patent  and
Trademark Office issued its decision to institute the Inter Partes Review. On October 13, 2020, we filed a motion to amend
the patent claims at issue in the proceeding. On January 13, 2021, Pfizer filed its opposition to our motion to amend the
claims. On February 3, 2021 the PTAB provided its preliminary guidance with respect to the proposed amended claims,
which stated among other things that the proposed amended claims were not anticipated but were obvious in light of the
cited prior art.  On February 16, 2021 and in response to the preliminary guidance, we moved to dismiss our motion to
amend the claims before the PTAB and requested an adverse judgement in the IPR Proceeding. As a result, we expect to
maintain  the  currently  issued  and  unchallenged  claims  of  the  ‘405  Patent  and  pursue  additional  claims  based  on  our
proposed amended claims in continuation applications before the USPTO.

Huntington’s disease (AMT-130)

We own a patent family directed to gene therapy treatment of Huntington’s disease within AMT-130. This family
includes an issued patent in the United States and pending patent applications in the US, Europe, and other jurisdictions.
The standard 20-year term of patents in this family will expire in 2035.

In  May  2019,  we  announced  the  issuance  of  two  new  patents  covering  AMT-130,  U.S.  Patent  10,174,321  and
European Patent EP 3237618 B1.  The claims as granted cover the RNA constructs specifically designed to target exon1
and the embedding of these Huntington’s disease RNA sequences into the miR451 scaffold, which is exclusively licensed
to us from CSHL. The claims also cover certain expression cassettes comprising the RNA constructs and the use of gene
therapy vectors including AAV vectors encompassing the described expression cassettes. In addition, this patent family has
multiple pending family members, including pending applications in U.S. and Europe.

AMT-130  incorporates  our  proprietary  miQURE  gene  silencing  technology  platform,  which  is  designed  to
degrade disease-causing genes, without off-target toxicity, and induce silencing of the entire target organ through secondary
exosome-mediated delivery.  We have filed additional patent applications related to this technology generally and AMT-
130,  specifically  which  will  potentially  provide  further  patent  protection  for  our  Huntington’s  disease  clinical  candidate
AMT-130.

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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.
In addition, under the amended license agreement CSHL granted to us an exclusive license for a three-year term to develop
and  commercialize  therapeutic  products  for  the  additional  disease  classifications  in  the  Field  of  liver  diseases,
neuromuscular diseases, and cardiovascular diseases. If we meet certain diligence milestones during the initial three-year
development  term,  we  may  include  exclusively  additional  disease  classifications  within  the  additional  Fields  on  similar
terms and conditions as the CNS diseases. We are currently using the technology in our Huntington’s disease and SCA 3
programs.

Under this license agreement, 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.

Technology Used for Specific Development Programs

Hemophilia B

National Institutes of Health—AAV production

In 2007, we entered into a non-exclusive license agreement with the NIH, which we amended in 2009 and 2013.
The  patents  under  this  license  cover  technology  to  produce  AAV  vectors  in  insect  cells.  We  may  only  grant  sublicenses
under this agreement with the NIH’s consent, which may not be unreasonably withheld. The standard 20-year term for the
underlying patents will expire in 2022.

Payment obligations to the NIH under this license agreement include a low single-digit percentage royalty on the
net  sales  of  licensed  products  by  us  or  on  our  behalf;  development  and  regulatory  milestone  payments;  and  an  annual
maintenance fee creditable against royalties. We do not have to pay royalties or milestone fees under this agreement if we
must pay royalties or milestone fees under our 2011 agreement with the NIH, described below, for the same product. Under
the license agreement, we have agreed to meet benchmarks in our development efforts, including as to development events,
clinical trials, and marketing approval, within specified timeframes.

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The NIH may terminate this agreement in specified circumstances relating to our insolvency or bankruptcy. We

may terminate this agreement for any reason, in any territory, subject to a specified notice period.

National Institutes of Health—AAV5

In  2011,  we  entered  into  another  license  agreement  with  the  NIH,  superseding  an  earlier  agreement.  This
agreement  was  amended  in  2016.  Under  this  agreement,  the  NIH  granted  us  an  exclusive,  worldwide  license  to  patents
relating  to  AAV5  for  use  in  therapeutic  products  to  be  delivered  to  the  brain  or  liver  for  treatment  of  human  diseases
originating in the brain or liver but excluding arthritis-related diseases, and a non-exclusive, worldwide license to patents
relating to AAV5 for all other diseases. The license technology under the patents of this license is also used in connection
with the Huntington’s disease program. We refer to the products licensed under this agreement as AAV5 products. We may
grant  sublicenses  under  this  agreement  only  with  the  NIH’s  consent,  which  may  not  be  unreasonably  withheld.  The
standard 20-year term for the underlying patents expired in 2019, but there are U.S. patents still in force of which the latest
will expire in 2021.

Payment  obligations  to  the  NIH  under  this  license  agreement  include  royalties  equal  to  a  low  single-digit
percentage of net sales of AAV5 products; development and regulatory milestone payments; and an annual maintenance fee
creditable against royalties. If an AAV5 product is also covered by our 2007 agreement with the NIH, our obligation to pay
royalties  on  net  sales  and  our  obligation  to  pay  milestone  fees  only  apply  under  this  2011  agreement  and  not  the  2007
agreement. We have agreed to meet benchmarks in our development efforts, including as to development events, clinical
trials, and marketing approval, within specified timeframes.

The NIH may terminate this agreement in specified circumstances relating to our insolvency or bankruptcy. We

may terminate this agreement for any reason, in any country or territory, subject to a specified notice period.

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  right,  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 will provide Dr. Simioni with an initial
license fee and reimbursement of past expenses, as well as payments that may come due upon the achievement of certain
milestone  events  related  to  the  development  of  the  Padua  IP  and  may  also  include  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,  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. We have also agreed
to  pay  St.  Jude  one-time  milestone  fees  totaling  $6.5  million  upon  the  achievement  of  specified  development  and
regulatory milestones, and an annual maintenance fee creditable against royalties and milestones in the same year. We have
agreed  to  use  commercially  reasonable  efforts  to  diligently  develop  and  commercialize  products  licensed  under  this
agreement.

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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.

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  United  States  and  the  European  Union.  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  are  aware  of  numerous  companies  focused  on  developing  gene  therapies  in  various  indications,  including
Applied  Genetic  Technologies  Corp.,  Abbvie,  Abeona  Therapeutics,  Adverum  Biotechnologies,  Ally  Therapeutics,  Apic
Bio,  Asklepios  BioPharmaceutical,  Astellas,  AVROBIO,  Bayer,  Biogen,  BioMarin,  bluebird  bio,  CRISPR  Therapeutics,
Editas  Medicine,  Expression  Therapeutics,  Fate,  Freeline  Therapeutics,  Generation  Bio,  Genethon,  GlaxoSmithKline,
Homology  Medicines,  Intellia  Therapeutics,  Johnson  &  Johnson,  Krystal  Biotech,  Lexeo  Therapeutics,  LogicBio
Therapeutics,  Lysogene,  MeiraGTx,  Milo  Biotechnology,  Mustang  Bio,  Novartis,  Orchard  Therapeutics,  Oxford
Biomedica,  Passage  Bio,  Pfizer,  REGENXBIO,  Renova  Therapeutics,  Roche,  Rocket  Pharmaceuticals,  Sangamo
Therapeutics,  Sanofi,  Selecta  Biosciences,  Sarepta  Therapeutics,  Sio  Therapeutics,  Solid  Biosciences,  SwanBio,  Takeda,
Taysha  Gene  Therapies,  Ultragenyx,  Vivet  Therapeutics,  and  Voyager  Therapeutics,  as  well  as  several  companies
addressing other methods for modifying genes and regulating gene expression. We may also face competition with respect
to the treatment of some of the diseases that we are seeking to target with our gene therapies from protein, nucleic acid,
antisense,  RNAi  and  other  pharmaceuticals  under  development  or  commercialized  at  pharmaceutical  and  biotechnology
companies  such  as  Alnylam  Pharmaceuticals,  Bayer,  BioMarin,  CSL  Behring,  Dicerna  Pharmaceuticals,  Ionis
Pharmaceuticals,  Novartis,  Novo  Nordisk,  Pfizer,  Translate  Bio,  Roche,  Sanofi,  Sobi,  Takeda,  WaVe  Life  Sciences,  and
numerous other pharmaceutical and biotechnology firms.

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.

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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  United  States,  European  Union  and  other  countries  extensively  regulate,  among
other  things,  the  approval,  research,  development,  preclinical  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 United States and the European Union, 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,  fines,  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 United States, 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.  The  FDA  has  also  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 United States must typically undertake the following:

● completion  of  preclinical  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 United States

● approval  by  an  independent  institutional  review  board  (“IRB”)  and  Institutional  Biosafety  Committee

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

● performance of adequate and well-controlled human clinical trials in accordance with the FDA’s current good
clinical  practices  (“cGCP”)  to  establish  substantial  evidence  of  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 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.

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Human Clinical Studies in the United States under an IND

Before initiating clinical studies in the United States or under an IND, investigational product sponsors must first
complete  pre-clinical  studies.  Preclinical  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 Good Laboratory Practices (“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. A protocol for each clinical trial and any subsequent protocol amendments
must  be  submitted  to  the  FDA  as  part  of  an  IND.  INDs  include  preclinical  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  United  States  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 the trial may be put on clinical hold. 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 must 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. 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 requests. Investigators must also provide certain information to the clinical trial sponsors to allow the sponsors to
make certain financial disclosures to the FDA.

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.

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In addition, under the Pediatric Research Equity Act, or 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
United States are also subject to regulation by the FDA. Further, the export of investigational products outside of the
United States 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 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.

FDA Guidance Governing Gene Therapy Products

The FDA has issued various guidance documents regarding gene therapies that outline additional factors that the
FDA  will  consider  at  each  of  the  above  stages  of  development  and  which  relate  to,  among  other  things,  the  proper
preclinical assessment of gene therapies; the chemistry, manufacturing, and control information that should be included in
an  IND  application;  the  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.

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  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.

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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.

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. 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. All promotional materials for drug or biologic candidates approved under accelerated
regulations are subject to prior review by the FDA.

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  preclinical  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, 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  for  each.  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. 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 the facility or facilities where the product is manufactured, referred to as a Pre-Approval
Inspection.  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  one  or  more  clinical  trial  sites  to  assure  compliance  with
GCPs.

After  evaluating  the  marketing  application  and  all  related  information,  including  the  advisory  committee
recommendation, if any, and 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 IV 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 health care 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  BCPIA,  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  thereafter.  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  market  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.

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, in 2020 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 for reference and generic drug products.

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  United  States,  or  more  in
cases in which there is no reasonable expectation that the cost of developing and making a biological product available in
the  United  States  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.  If  a  product  with  orphan
designation receives the first FDA approval, it will 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.  Orphan  product
designation does not convey any advantage in or shorten the duration of the regulatory review and approval process. The
FDA  has  granted  orphan  drug  designation  to  AMT-130  for  the  treatment  of  Huntington’s  disease  as  well  as  for
etranacogene  dezaparvovec;  meaning  that  they  would  receive  orphan  drug  exclusivity  if  they  are  the  first  products
approved for their respective indications. Orphan product sameness decisions are an evolving space when it comes to gene
therapies. Specifically, the FDA has issued guidance regarding how it will determine whether a gene therapy product is the
same as another product for the purpose of the agency’s orphan drug regulations. 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.

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  exclusivity  against  biosimilars.  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.

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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 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 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
FDA’s post-market device requirements, 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;
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.

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.  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.

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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  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  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 contracts, 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 product. Certain reporting related to samples is also required
samples  and  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.  Sponsors  must  also  verify  that  purchasers  of  the  sponsors’  products  are
appropriately  licensed.  Further,  under  this  legislation,  manufactures  have  product  investigation,  quarantine,
disposition,  and  notification  responsibilities  related  to  counterfeit,  diverted,  stolen,  and  intentionally  adulterated
products that would result in serious adverse health consequences of 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  and  will  be  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,  fines,
consent decrees, corporate integrity agreements, suspension and debarment from government contracts, and refusal
of orders under existing government contracts, exclusion from participation in federal and state healthcare programs,
restitution,  disgorgement,  or  civil  or  criminal  penalties,  including  fines  and  imprisonment,  and  adverse  publicity,
among other adverse consequences.

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 United
States and between states.

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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.

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.  The  FDA  has  also  issued  guidance
with  respect  to  gene  therapies,  such  as  guidance  concerning  preclinical  studies,  chemistry  manufacturing  and
controls, potency testing, and long-term patient and clinical study subject follow up and regulatory reporting. The
FDA further issued a draft guidance specific to the development of gene therapy products for neurodegenerative diseases
as such products may face special challenges.

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  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.  This  statute  has  been
interpreted to apply to arrangements between pharmaceutical manufacturers on the one hand and prescribers, purchasers
and formulary managers on the other. 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
one  hand  and  prescribers,  purchasers,  formulary  managers,  and  beneficiaries  on  the  other.  There  are  certain  statutory
exceptions  and  regulatory  safe  harbors  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
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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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, as amended, effective January 1, 2023, 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  pharmacy  benefit
manager  will  not  be  protected  under  the  anti-kickback  discount  safe  harbor.  Several  courts  have  interpreted  the  statute’s
intent  requirement  to  mean  that  if  any  one  purpose  of  an  arrangement  involving  remuneration  is  to  induce  referrals  of
federal healthcare covered 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  payment  of  items  or  services  resulting  from  such  violation  constitutes  a  false  or  fraudulent  claim  for
purposes of the federal civil False Claims Act.

Federal civil false claims laws prohibit 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 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 fines 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  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, conviction, or civil judgment for violating
the  FCA  may  result  in  exclusion  from  federal  health  care  programs,  and  suspension  and  debarment  from  government
contracts, and refusal of orders under existing government contracts. The majority of states also have statutes or regulations
similar  to  the  federal  anti-kickback  law  and  false  claims  laws,  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 statute 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 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
products  approved  under  a  BLA  (including  biosimilars),  the  Veterans  Health  Care  Act,  (the  “VHCA”),  requires
sponsors  to  calculate  and  report  to  the  Veterans  Administration,  or  VA,  a  different  price  called  the  Non-Federal
Average Manufacturing 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  and  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  health  care  benefits,  knowingly  and
willfully embezzling or stealing from a health care benefit program, willfully obstructing a criminal investigation of a
health  care  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 payments and transfers of value
made  to  or  at  the  request  of  covered  recipients,  such  as,  but  not  limited  to,  physicians,  physician  assistants,  nurse
practitioners,  clinical  nurse  specialists,  and  certified  registered  nurse  anesthetists  and  teaching  hospitals,  as  well  as
ownership  and  investment  interests  held  by  physicians  and  their  immediate  family.  Payments  made  to  physicians  and
certain  research  institutions  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.  State  legislation  may  also  prohibit  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  individually  identifiable  health  information,
known as protected health information. Among other things, the HITECH Act, through its implementing regulations,
makes HIPAA’s security standards and certain privacy standards directly applicable to business associates, defined as a
person  or  organization,  other  than  a  member  of  a  covered  entity’s  workforce,  that  creates,  receives,  maintains,  or
transmits  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  penalties  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  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.  Recently,  states  have  enacted  or  are  considering
legislation intended to make drug prices more transparent and deter significant price increases. These laws may affect
our future sales, marketing, and other promotional activities by imposing administrative and compliance burdens.

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  criminal  and  significant  civil
monetary  penalties,  damages,  fines,  disgorgement,  imprisonment,  exclusion  from  participation  in  government  healthcare
programs,  corporate  integrity  agreements,  suspension  and  debarment  from  government  contracts,  and  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,  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 health care 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. 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 United States has increased and will continue to increase the pressure on drug pricing.
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 health
care 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.

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 United States. 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 Trials Directive 2001/20/EC,
as  amended  (“CTD”)  (and  to  be  replaced  by  the  Clinical  Trial  Regulation  EU  536/2014)  (“CTR”)  (it  is  anticipated  by
December 2021), provides a system for the approval of clinical trials in the European Union via (in the case of the CTD)
implementation  through  national  legislation  of  the  member  states.  The  CTR  is  directly  applicable  in  all  member  states
without the need for national implementation. Under this system, approval must be obtained from the competent national
authority of an EU member state in which the clinical trial is to be conducted. Once the CTR comes into effect however, it
will be possible within the EU 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”
(Directive2001/18/EC). This results in some EU member states, the GMO application must be approved before the Clinical
Trial Application (CTA) is submitted, in some after approval of the CTA and in some parallel.

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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.  When  the  CTR  comes  into  force  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.

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—currently 28—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 preclinical 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.

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.

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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.

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.

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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.

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.

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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.

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.

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Human Capital Resources

As  of  December  31,  2020,  we  had  a  total  of  332  employees,  162  of  whom  are  based  in  Amsterdam,  The
Netherlands,  and  170  in  Lexington,  Massachusetts,  United  States  of  America.  As  of  December  31,  2020,  62  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 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.

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.

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 25a, Amsterdam 1105 BP, the Netherlands and its telephone number is +31 20 240 6000.

From our initial public offering until December 31, 2018, we were an emerging growth company, as defined in the
Jumpstart  Our  Business  Startups  Act  of  2012.  On  the  last  business  day  of  our  second  quarter  in  fiscal  year  2018  the
aggregate worldwide market value of ordinary shares held by our non-affiliate shareholders exceeded $700.0 million. As a
result, as of December 31, 2018, we were considered a large accelerated filer and as a consequence lost our status as an
emerging growth company.

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 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 CSL Behring Collaboration and License Transaction

In June 2020, uniQure biopharma B.V., our wholly-owned subsidiary, entered into the CSL Behring Agreement

with CSL Behring providing CSL Behring exclusive global rights to etranacogene dezaparvovec.

We and CSL Behring may be unable to close the transaction contemplated by the CSL Behring Agreement, and
any delay in completing the transaction could diminish the anticipated benefits of the transaction or result in increased
costs. Failure to close the transaction could adversely impact the market price of our shares as well as our business and
operating results, cash flows and results of operations.

The closing of the transaction contemplated by the CSL Behring Agreement is contingent on completion of the
successful review by the FTC under antitrust laws in the United States, including the expiration of the waiting period under
the HSR Act by a certain date. On January 4, 2021, we received a Second Request from the FTC, the effect of which is the
extension of the waiting period imposed under the HSR Act until 30 days after all parties to the CSL Behring Agreement
have  substantially  complied  with  the  requests  (unless  the  waiting  period  is  terminated  earlier  by  the  FTC  or  voluntarily
extended by the parties). We cannot make any assurances as to the timing of the closing of the transaction or whether the
transaction will be closed at all, or that, as part of the regulatory review process, additional conditions or terms will not be
required.

The  requirement  to  receive  these  clearances  before  the  closing  of  the  transaction  could  delay  the  transaction  or
result in an inability to complete the transaction if such clearances are not timely obtained or not obtained at all. Any delay
in the completion of the transaction could diminish the anticipated benefits of the transaction, including a realization of the
expected  benefits  of  partnering,  or  result  in  additional  transaction  costs,  loss  of  revenue  or  other  effects  associated  with
uncertainty about the transaction and could disrupt our regular operations by diverting the attention of our workforce and
management team. Any such delay could also delay the timelines associated with our commercialization of etranacogene
dezaparvovec,  including  the  filing  of  a  biologics  licensing  application  with  the  FDA,  and  such  delays  could  cause  us  to
bring etranacogene dezaparvovec to market after a similar competitive product has emerged in the United States, Europe or
in other markets.

We will need to fund investments into the development and preparation of the commercial launch of etranacogene
dezaparvovec for as long as regulatory reviews continue. The completions of these reviews could require significant time
and/or  might  result  in  modifications  to  or  even  denial  of  the  transaction.  These  factors  could  adversely  impact  the  cash
flows and results that we are able to generate in relation to etranacogene dezaparvovec. Additionally, any uncertainty over
the  ability  of  us  and  CSL  Behring  to  complete  the  transaction  could  make  it  more  difficult  for  us  to  retain  certain  key
employees  or  attract  new  talent  or  to  pursue  business  strategies  and  parties  with  whom  we  have  business  relationships
related  to  etranacogene  dezaparvovec,  either  contractual  or  operational  in  nature,  may  experience  uncertainty  as  to  the
future or desirability of such relationships and may delay or defer certain business decisions, seek alternative relationships
with third parties or seek to alter their present business relationships with us.

To the extent that the market price of our ordinary shares reflects positive market assumptions that the transaction
will close within a certain time frame, or at all, or that the transaction is advantageous to us, the price of such shares may
decline if the transaction does not close for any reason or in a timely manner.

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Risks Related to the Current COVID-19 Pandemic

Our  business  and  operations  have  been,  and  may  continue  to  be,  materially  and  adversely  affected  by  the

ongoing COVID-19 pandemic.

The  ongoing  outbreak  of  COVID-19  originated  in  Wuhan,  China,  in  December  2019  and  has  since  spread  to
multiple countries, including the United States and the Netherlands. On March 11, 2020, the WHO declared the outbreak a
pandemic.  The  COVID-19  pandemic  is  affecting  the  United  States  and  global  economies  and  has  affected  and  may
continue to affect our operations and those of third parties on which we rely. The COVID-19 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-19  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.

As evidenced by the postponement of procedures for two patients in our Phase I/II clinical study of AMT-130, the
evolving COVID-19 pandemic has impacted the pace of enrollment and procedures in our clinical trials, as well as caused
challenges in scheduling follow-up visits and managing other aspects of our clinical trials. We may be affected by similar
delays as patients may avoid or may not be able to travel to healthcare facilities and physicians’ offices unless due to a
health  emergency  and  clinical  trial  staff  can  no  longer  get  to  the  clinic.  Such  facilities  and  offices  have  been  and  may
continue to be required to focus limited resources on non-clinical trial matters, including treatment of COVID-19 patients,
thereby decreasing availability, in whole or in part, for clinical trial services. In addition, employee disruptions and remote
working environments related to the COVID-19 pandemic, and federal, state, and local public health measures designed to
mitigate the spread of the virus, have impacted and could continue to negatively impact the efficiency and pace with which
we  work  and  develop  our  product  candidates  and  our  manufacturing  capabilities.  Further,  while  the  potential  economic
impact brought by, and the duration of, the COVID-19 pandemic is difficult to assess or predict, the impact of the COVID-
19 pandemic on global financial markets may reduce our ability to access capital, which could negatively impact our short-
term and long-term liquidity. The ultimate impact of the COVID-19 pandemic is highly uncertain and subject to change.
We do not yet know the full extent of potential delays or impacts on our business, financing, or clinical trial activities or on
healthcare systems or the global economy as a whole. However, these negative effects could have a material impact on our
liquidity, capital resources, operations, and business and those of the third parties on whom we rely.

Risks Related to the Development of Our Product Candidates

None of our product candidates have been approved for commercial sale and they might never receive
regulatory approval or become commercially viable. We have never generated any revenues from product sales and may
never be profitable.

All our product candidates are in research or development. We have not generated any revenues from the sale of
products or manufacturing of our product for a licensee and do not expect to generate any such revenue before 2022. Our
lead product candidates, etranacogene dezaparvovec (also known as AMT-061) and 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  may  encounter  substantial  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, on December 21, 2020, our clinical trials of etranacogene dezaparvovec, including
our  HOPE-B  trial,  were  put  on  clinical  hold  by  the  FDA.  The  clinical  hold  was  initiated  following  the  submission  of  a
safety  report  in  mid-December  2020  relating  to  a  possibly  related  serious  adverse  event  associated  with  a  preliminary
diagnosis  of  HCC,  a  form  of  liver  cancer,  in  one  patient  in  the  HOPE-B  trial  that  was  treated  with  the  etranacogene
dezaparvovec in October 2019. The clinical hold could be maintained for an extended period of time or indefinitely. We
cannot guarantee that any preclinical tests or clinical trials, including our clinical trials of etranacogene dezaparvovec, 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:

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● 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;
● 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;

● delays in obtaining or failure to obtain required approvals from a DSMB or other required approvals;
● 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;
● the impact of the COVID-19 pandemic on the healthcare system or any clinical trial sites;
● 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

emergency of new information about or impacting our product candidates;
● 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,  especially  in  light  of  the  change  in  the  United  States  administration,  that  require  amending  or
submitting  new  clinical  protocols,  undertaking  additional  new  tests  or  analyses,  or  submitting  new  types  or
amounts of clinical data.

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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 United States 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  of
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.

By example, our initial clinical trials in hemophilia B were conducted with AMT-060. Following these studies, we
made  modifications  to  AMT-060,  substituting  two  nucleotides  in  the  coding  sequence  for  FIX.  This  modified  product
candidate is etranacogene dezaparvovec. In 2017, we announced our plans to advance etranacogene dezaparvovec, which
includes  an  AAV5  vector  carrying  the  FIX-Padua  transgene,  into  a  pivotal  study.  While  we  believe  etranacogene
dezaparvovec  and  AMT-060,  our  product  candidate  that  was  previously  studied  in  a  Phase  I/II  study,  have  been
demonstrated to be materially comparable in nonclinical studies and manufacturing quality assessments, it is possible that
ongoing or future clinical studies of etranacogene dezaparvovec may show unexpected differences from AMT-060. Should
these  differences  have  an  unfavorable  impact  on  clinical  outcomes,  or  should  they  not  have  their  intended  effect  of
increasing  the  product  candidate’s  FIX  activity,  they  may  adversely  impact  our  ability  to  achieve  regulatory  approval  or
market acceptance of etranacogene dezaparvovec. We may also need to conduct additional or longer-term studies, which
may delay regulatory submissions or approvals and which the regulatory authorities may ultimately not accept or approve.

In  our  Phase  I/II  clinical  study  of  AMT-060,  we  screened  patients  for  pre-existing  anti-AAV5  antibodies  to
determine  their  eligibility  for  the  trial.  Three  of  the  ten  patients  screened  for  the  study  tested  positive  for  anti-AAV5
antibodies  on  reanalysis  using  a  more  sensitive  antibody  assay.  Since  we  did  not  observe  any  ill-effects  or  correlation
between the level of anti-AAV5 antibodies and clinical outcomes, patients who have anti-AAV5 antibodies are permitted to
enroll in our planned pivotal study of etranacogene dezaparvovec. Since we only have been able to test a limited number of
patients and have limited clinical and pre-clinical data, it is possible that ongoing or future clinical studies may not confirm
these results, and if so, negatively impact the outcome of our study.

In advance of treating patients in the pivotal study of etranacogene dezaparvovec, we conducted a short study to
confirm the dose expected to be used in the pivotal trial. The dose-confirmation study enrolled three patients, who were
administered a single dose of 2x1013 gc/kg. We have relied on the short-term data from this study, including FIX activity
and safety outcomes during the weeks following administration of etranacogene dezaparvovec, to confirm the dose to be
used in the pivotal study. Following the results of this study, our Data Monitoring Committee confirmed the dose of 2x1013
gc/kg for administration in the pivotal study. Given the limited number of patients and short follow-up period, data from
this study may differ materially from the future results of our planned pivotal study of etranacogene dezaparvovec.

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.

Additionally, where there are differences in the early-stage and late-stage trials, such as the differences between
AMT-060 and AMT-061, regulatory authorities may require additional or longer-term data in late-stage trials, which may
delay regulatory submissions or approvals and which the regulatory authorities may ultimately not accept or approve.

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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.

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.

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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) or etranacogene dezaparvovec. Any 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.  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.   This  may  result  in  our
product  candidates  being  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.

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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,
EMA, and other regulatory bodies to ensure compliance with current cGMP. Moreover, before approving a BLA for any
product candidate, the FDA will inspect our manufacturing facility and processes. 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, EMA, 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  approvals,  which  we  may  not  be  able  to
obtain.

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 our manufacturing processes, which may
result  in  delays  in  obtaining  regulatory  approvals  or  otherwise  adversely  affect  our  ability  to  manufacture  sufficient
quantities 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, or cases of force
majeure and acts of god (including the effects of the COVID-19 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.

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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  United  States  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 or develop

new processes to meet our product supply needs and obligations.

The  manufacture  of  our  AAV  gene  therapies,  including  etranacogene  dezaparvovec,  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  etranacogene  dezaparvovec,  and  other  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 etranacogene dezaparvovec, as well as other gene therapy product candidates,
we  will  need  to  complete  the  validation  of  our  existing  manufacturing  processes  as  well  as  to  develop  larger  scale
manufacturing processes. If we are unable to consistently manufacture etranacogene dezaparvovec, or other gene therapy
product candidates, in accordance with our pre-specified quality parameters and applicable regulatory standards, it could
adversely  impact  our  ability  to  validate  our  manufacturing  processes,  to  meet  our  production  needs,  to  file  our  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, including with CSL Behring in return for supplying etranacogene
dezaparvovec following regulatory approval.

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 United States, 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 United 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 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.

If we experience delays in obtaining marketing approval for any of our product candidates in the United States,
the European Union, or other countries, the commercial prospects of our other product candidates may be harmed and our
ability to generate revenues will be materially impaired.

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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 United 
States, 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  United  States  or  European  Union,  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 United States, there have been a number of recent changes
relating  to  gene  therapy  development.  By  example,  FDA  issued  a  number  of  new  guidance  documents  on  human  gene
therapy development, one of which was specific to human gene therapy for hemophilia 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 United States 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 United States 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 United States, 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 United States 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.

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.

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Additionally, regulatory criteria with respect to orphan products is evolving, especially in the area of gene therapy.
 By example, in the United States, whether two gene therapies are considered to be the same for the purpose of determining
clinical superiority is subject to change, and depends on a number of factors, including the expressed transgene, the vector,
and other product or product candidate features. Accordingly, whether any of our product candidates will be deemed to be
the same as another product or product candidate is uncertain.

As  appropriate,  we  intend  to  seek  all  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 United States, this could mean that a competing biosimilar product may be able to submit
an  application  to  the  FDA  and  obtain  approval.  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  judgement.  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  United  States  period  of
exclusivity  to  a  shorter  timeframe.  Future  proposed  budgets,  international  trade  agreements  and  other  arrangements  or
proposals may affect periods of exclusivity.

Risks Related to Commercialization

If we 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  product  revenues  will  depend  on  the  successful  development  and  eventual
commercialization  of  our  product  candidates.  The  success  of  our  product  candidates  will  depend  on  many  factors,
including:

● closing and successful execution of our transaction with CSL Behring for the commercialization of etranacogene

dezaparvovec;

● 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 our products according to required quality specifications;
● obtaining  and  maintaining  patent  and  trade  secret  protection  and  non-patent,  orphan  drug  exclusivity  for  our

product candidates;

● obtaining and 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;

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● 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;
● obtaining and maintaining healthcare coverage and adequate reimbursement;
● any price concessions, rebates, or discounts we may need to provide;
● complying with any applicable post-approval 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.

By  example,  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.
For  example,  etranacogene  dezaparvovec,  our  gene  therapy  candidate  for  hemophilia  B  patients,  incorporates  an  AAV5
capsid.  In  our  Phase  I/II  clinical  study  of  AMT-060,  we  screened  patients  for  pre-existing  anti-AAV5  antibodies  to
determine  their  eligibility  for  the  trial.  Three  of  the  ten  patients  screened  for  the  study  tested  positive  for  anti-AAV5
antibodies  on  reanalysis.  Although  we  did  not  observe  any  ill-effects  or  correlation  between  the  level  of  anti-AAV5
antibodies and clinical outcomes in these three patients, suggesting that patients who have anti-AAV5 antibodies may still
be  eligible  for  AAV5-based  gene  therapies,  since  we  only  have  been  able  to  test  a  limited  number  of  patients  and  have
limited clinical and pre-clinical data, we do not know if future clinical studies will confirm these results. This may limit the
addressable  market  for  etranacogene  dezaparvovec  and  any  future  revenues  derived  from  the  sale  of  the  product,  if
approved.

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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;
● 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  we  are  unable  to  expand  our  commercialization  capabilities  or  enter  into  agreements  with  third  parties  to
market and sell any of our product candidates for which we obtain marketing approval, we may be unable to generate
any product revenue.

To successfully commercialize any products that may result from our development programs, we need to continue
to  expand  our  commercialization  capabilities,  either  on  our  own  or  with  others.  The  development  of  our  own  market
development  effort  is,  and  will  continue  to  be,  expensive  and  time-consuming  and  could  delay  any  product  launch.
Moreover, we cannot be certain that we will be able to successfully develop this capability.

We  may  enter  into  collaborations  regarding  our  other  product  candidates  with  other  entities  to  utilize  their
established marketing and distribution capabilities, but we may be unable to enter into such agreements on favorable terms,
if at all. If any current or future collaborators do not commit sufficient resources to commercialize our products, or we are
unable to develop the necessary capabilities on our own, we will be unable to generate sufficient product revenue to sustain
our  business.  We  compete  with  many  companies  that  currently  have  extensive,  experienced  and  well-funded  medical
affairs, marketing, and sales operations to recruit, hire, train and retain marketing and sales personnel. We also may face
competition  in  any  search  for  third  parties  to  assist  us  with  the  sales  and  marketing  efforts  of  our  product  candidates.
Without an internal team or the support of a third party to perform marketing and sales functions, we may be unable to
compete successfully against these more established companies.

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  United  States,  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.

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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. In particular, our success
will  depend  upon  physicians  who  specialize  in  the  treatment  of  genetic  diseases  targeted  by  our  product  and  product
candidates, if approved, prescribing treatments that involve the use of our product and product candidates, if approved, 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.

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 obtain approval to commercialize any of our product candidates outside of the United States, 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

United States, 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 United States;

● 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;

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● workforce uncertainty in countries where labor unrest is more common than in the United States;
● 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.

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  are  aware  of  numerous  companies  focused  on  developing  gene  therapies  in  various  indications,  including
Applied  Genetic  Technologies  Corp.,  Abbvie,  Abeona  Therapeutics,  Adverum  Biotechnologies,  Ally  Therapeutics,  Apic
Bio,  Asklepios  BioPharmaceutical,  Astellas,  AVROBIO,  Bayer,  Biogen,  BioMarin,  bluebird  bio,  CRISPR  Therapeutics,
Editas  Medicine,  Expression  Therapeutics,  Fate,  Freeline  Therapeutics,  Generation  Bio,  Genethon,  GlaxoSmithKline,
Homology  Medicines,  Intellia  Therapeutics,  Johnson  &  Johnson,  Krystal  Biotech,  Lexeo  Therapeutics,  LogicBio
Therapeutics,  Lysogene,  MeiraGTx,  Milo  Biotechnology,  Mustang  Bio,  Novartis,  Orchard  Therapeutics,  Oxford
Biomedica,  Passage  Bio,  Pfizer,  REGENXBIO,  Renova  Therapeutics,  Roche,  Rocket  Pharmaceuticals,  Sangamo
Therapeutics,  Sanofi,  Selecta  Biosciences,  Sarepta  Therapeutics,  Sio  Therapeutics,  Solid  Biosciences,  SwanBio,  Takeda,
Taysha  Gene  Therapies,  Ultragenyx,  Vivet  Therapeutics,  and  Voyager  Therapeutics,  as  well  as  several  companies
addressing other methods for modifying genes and regulating gene expression. We may also face competition with respect
to the treatment of some of the diseases that we are seeking to target with our gene therapies from protein, nucleic acid,
antisense,  RNAi  and  other  pharmaceuticals  under  development  or  commercialized  at  pharmaceutical  and  biotechnology
companies  such  as  Alnylam  Pharmaceuticals,  Bayer,  BioMarin,  CSL  Behring,  Dicerna  Pharmaceuticals,  Ionis
Pharmaceuticals,  Novartis,  Novo  Nordisk,  Pfizer,  Translate  Bio,  Roche,  Sanofi,  Sobi,  Takeda,  WaVe  Life  Sciences,  and
numerous other pharmaceutical and biotechnology firms.

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.

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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.

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.

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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.

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;

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● 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.

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.

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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  United  States,  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. For example, patents we own
currently are and may become subject to future patent opposition or similar proceedings, which 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.

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 United States. 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 United States 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 United States 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.

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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  United  States  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.

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  United  States  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.

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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 United States 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.

Risks Related to Pricing and Reimbursement

We face uncertainty related to insurance coverage of, and pricing and reimbursement for 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 United States 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 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.

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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.

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 these 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 have incurred significant losses to date, expect to incur losses over the next several years and may never

achieve or maintain profitability.

We  had  a  net  loss  of  $125.0  million  in  the  year  ended  December  31,  2020,  $124.2  million  in  2019  and  $83.3
million in 2018. As of December 31, 2020, we had an accumulated deficit of $784.7 million. To date, 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
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. Our losses will be materially impacted by the
amount  of  license  revenue  that  we  will  recognize  in  accordance  with  ASC  606  in  the  event  of  the  closing  of  the
transactions contemplated by the CSL Behring Agreement.

We anticipate that our expenses will increase substantially as we:
● Advance the clinical development of AMT-130, our Huntington’s disease gene therapy program;
● Build-out  our  commercial  and  medical  affairs  infrastructure  and  seek  marketing  approval  for  any  product
candidates (including etranacogene dezaparvovec in the event that the transactions contemplated by the CSL
Behring Agreement do not close) that successfully complete clinical trials;

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● Advance  multiple  research  programs  related  to  gene  therapy  candidates  targeting  liver-directed  and  CNS

diseases;

● Continue  to  expand,  enhance,  and  optimize  our  technology  platform,  including  our  manufacturing

capabilities, next-generation viral vectors and promoters, and other enabling technologies;

● Continue  to  expand  our  employee  base  to  support  research  and  development,  as  well  as  general  and

administrative functions;

● Acquire or in-license rights to new therapeutic targets or product candidates; and
● Maintain, expand, and protect our intellectual property portfolio, including in-licensing additional intellectual

property rights from third parties.

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.

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  particular  if  the  CSL  Behring
transaction does not close. 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 Second Amended and Restated Loan and
Security Agreement (as amended, the “2018 Amended Facility”) and our 2021 Amended Facility with Hercules 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, 2020, we had $35.0 million of outstanding principal of borrowings under the 2018 Amended
Facility, which following our January 2021 amendment we are required to repay in June 2023. In January 2021 we drew
down  a  further  $35.0  million  from  Hercules.  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.

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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 2018 Amended Facility as well as the 2021
Amended 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  customers  and  third-party  payers  will  be  subject  to  applicable  anti-kickback,  anti-
bribery, fraud and abuse and other laws and regulations, which, if we are found in violation thereof, could expose us to
criminal sanctions, civil penalties, contractual damages, reputational harm and diminished profits and future earnings.

Healthcare  providers,  physicians  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 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.

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
of products from government funded healthcare programs and the curtailment or restructuring of our operations. The costs
associated with any of these actions 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 6,500,000 per occurrence and per clinical trial. 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  United
States, 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 and,
following  passage  of  the  Bipartisan  Budget  Act  of  2018,  will  remain  in  effect  through  2027  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.

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  the  reimbursement  our  customers  may
receive for our products. 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.

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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-19 might increase our vulnerability to the
above risk.

While 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, we have experienced and addressed recent system failures, cyber-attacks,
and security breaches. 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.

Risks Related to Employee Matters and Managing Growth

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

motivate qualified personnel.

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.

If we are unable to continue to attract and retain high quality personnel, our ability to pursue our growth strategy

will be limited.

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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 25, 2021, 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 25, 2021, was $37.00 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 European Union, the United States, and other countries;
● developments or disputes concerning patent applications, issued patents or other proprietary rights;
● the recruitment or departure of key personnel;
● the level of expenses related to any of our 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 50.3% of our issued shares (including such shares to be issued in relation
to  exercisable  options  to  purchase  ordinary  shares)  as  at  December  31,  2020.  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.

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.

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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 but not in 2017, 2018,
2019  or  2020.  A  corporation  organized  outside  the  United  States  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.

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

Although we now 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 United States. As a result,
it may not be possible for shareholders to effect service of process within the United States 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 United States. 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.

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The United States 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 United States, 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 United States 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  now  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. 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.

Amsterdam / The Netherlands

In 2016, we entered into leases for a total of approximately 111,000 square feet facility in Amsterdam. The lease

for 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.

We believe that our existing 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.

On  or  about  February  22,  2021,  Pavlina  Konstantinova,  VectorY  B.V.,  and  Forbion  International  Management
B.V.  commenced  a  summary  proceeding  in  the  Netherlands  primarily  seeking  an  order:  (i)  allowing  VectorY  and  Dr.
Konstantinova to continue their employment relationship; (ii) suspending the non-competition agreement between uniQure
biopharma  B.V.  and  Dr.  Konstantinova;  and  (iii)  precluding  any  monetary  penalties  pursuant  to  that  non-competition
agreement. The complaint also seeks payment of the costs of legal proceedings and a monetary monthly payment to Dr.
Konstantinova in lieu of a promise by uniQure biopharma B.V. to release Dr. Konstantinova from her obligations under the
non-competition  agreement.  The  proceeding  stems  from  a  dispute  between  us,  Dr.  Konstantinova,  VectorY  and  Forbion
International  Management  B.V.  over  the  hiring  by  VectorY  of  Dr.  Konstantinova  and  several  other  former  uniQure
employees,  which  we  believe  is  in  violation  of  the  employment  agreements  of  those  employees  and  involves  the
misappropriation of our proprietary resources. We believe that Forbion International Management B.V. is an affiliate of the
Forbion  group  of  companies  that  collectively  own  more  than  five  percent  of  our  outstanding  ordinary  shares.    We  are
unable to express a view as to the likely outcome of this proceeding at this time.

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.

Issuer Share Repurchases

We did not make any purchases of our ordinary shares during the year ended December 31, 2020. Our affiliates

made purchases of our ordinary shares as described in “Unregistered Sales of Equity Securities” above.

Holders

As  of  February  25,  2021,  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.

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  closed  December  31,  2015  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 is not to be incorporated by
reference  into  any  of  our  filings  under  the  Securities  Act,  or  the  Exchange  Act,  whether  made  before  or  after  the  date
hereof and irrespective of any general incorporation language in any such filing.

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Item 6.  Selected Financial Data

Not applicable.

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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 United States (“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, seeking to develop single treatments with potentially curative results
for patients suffering from genetic and other devastating diseases. We are advancing a focused pipeline of innovative gene
therapies,  including  product  candidates  for  the  treatment  of  hemophilia  B,  which  we  intend  to  license  to  CSL  Behring
pursuant  to  the  CSL  Behring  Agreement,  and  Huntington’s  disease.  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.

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Business developments

Below is a summary of our recent significant business developments:

CSL Behring commercialization and license agreement

On  June  24,  2020,  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 will receive exclusive global rights to etranacogene
dezaparvovec, the Product.

Under the terms of the CSL Behring Agreement, we will receive a $450.0 million upfront cash payment upon the
closing  of  the  CSL  Behring  Agreement  and  be  eligible  to  receive  up  to  $1.6  billion  in  additional  payments  based  on
regulatory and commercial milestones. The CSL Behring agreement also provides that we 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.

 Pursuant to the CSL Behring Agreement, we will be responsible for the completion of the HOPE-B clinical trial,
manufacturing process validation, and the manufacturing supply of the Product until such time that these capabilities may
be transferred to CSL Behring or its designated contract manufacturing organization. Concurrently with the execution of
the CSL Behring Agreement, we and CSL Behring 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. Clinical development
and  regulatory  activities  performed  by  us  pursuant  to  the  CSL  Behring  Agreement  will  be  reimbursed  by  CSL  Behring.
CSL Behring will be responsible for global regulatory submissions and commercialization requirements for the Product.

Other than under the CSL Behring Agreement, neither we nor CSL Behring may perform any clinical trials, with
the  exception  of  trials  required  to  extend  the  label  or  gain  marketing  authorization  outside  the  United  States  or  the
European Union, for any gene therapy product, gene-editing product, or any other product comprising an AAV vector to
conduct nucleotide transfer (including DNA and RNA) for the treatment, prevention, or cure of hemophilia B for a period
commencing on June 24, 2020 and continuing for a period of four years following the first commercial sale of the Product
in the United States, and neither we nor CSL Behring may commercialize such a product for a period commencing as of
June 24, 2020 and continuing for a period of seven years following the first commercial sale of the Product in the United
States.  This  exclusivity  commitment  would  not  bind  an  acquirer  of  us  that  owns  or  controls  such  a  product  so  long  as
certain  precautions  are  followed  to  ensure  that  CSL  Behring’s  confidential  information  and  our  proprietary  technology
related to the Product are not used or accessed by personnel of such acquirer who are developing or commercializing such
competing product.

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 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.

On  November  11,  2020,  the  ACCC  determined,  pursuant  to  section  50  of  the  Competition  and  Consumer  Act
2010 of Australia, that it will not intervene in the CSL Behring Agreement. Thus, the ACCC has completed its review of
the  CSL  Behring  Agreement,  and  the  transactions  contemplated  by  the  CSL  Behring  Agreement  may  close  from  the
perspective of the Australian competition authority.

On November 24, 2020, the Competition and Markets Authority in the United Kingdom (the “CMA”) adopted a
decision not to refer the CSL Behring Agreement for proceedings under section 33 of the Enterprise Act 2002 of the United
Kingdom. The decision was made public by the CMA on January 6, 2021. Thus, the CMA has completed its review of the
CSL  Behring  Agreement,  and  the  transactions  contemplated  by  the  CSL  Behring  Agreement  may  close  from  the
perspective of the United Kingdom competition authority.

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On December 3, 2020, we and CSL Behring filed a premerger notification and report form under the HSR Act. On
January 4, 2021, the FTC issued a Second Request under the HSR Act. The FTC similarly issued a Second Request to CSL
Behring also with respect to the antitrust review of the CSL Behring Agreement. The effect of the Second Requests is to
extend the waiting period imposed under the HSR Act until 30 days after all parties to the CSL Behring Agreement have
substantially complied with the requests unless the waiting period is terminated earlier by the FTC or voluntarily extended
by the parties.  

The effectiveness of the transactions contemplated by the CSL Behring Agreement is contingent on completion of
review  under  antitrust  laws  in  the  United  States,  Australia,  and  the  United  Kingdom  and  certain  provisions  of  the  CSL
Behring Agreement will not become effective until after we receive such regulatory approvals. Regulatory approval in the
United States has not occurred to date.

Closing of the transaction is expected to materially impact our profitability and cash flows. Receipt of the $450.0
million payment due on closing would extend the funding of our operations from the second half of 2022 into the second
half of 2024 (assuming a full repayment of funds borrowed from Hercules under our term loan facility by 2023). However,
we expect to continue to incur losses and to generate negative cash flows beyond the fiscal year in which we would close
the transaction.

BMS collaboration

We  and  Bristol-Myers  Squibb  entered  into  a  collaboration  and  license  agreement  in  May  2015.  BMS  initially
designated four Collaboration Targets in 2015 and in accordance with the terms of the BMS CLA could have designated a
fifth to tenth Collaboration Target.

 In February 2019, BMS requested a one-year extension of the initial research term. In April 2019, following an
assessment of the progress of this collaboration and our expanding proprietary programs, we notified BMS that we did not
intend  to  agree  to  an  extension  of  the  initial  research  term.  Accordingly,  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.  Following  the  amendment  BMS  is  no  longer
entitled  to  designate  a  fifth  to  tenth  Collaboration  Target  and  as  such  we  are  no  longer  entitled  to  receive  an  aggregate
$16.5 million in target designation payments for the research, development, and regulatory milestone payments related to
the fifth to tenth Collaboration Targets. For a period of one year from the effective date of the amended BMS CLA, BMS
may replace up to two of the four active Collaboration Targets with two new targets in the field of cardiovascular disease.
We continue to be entitled to receive up to $217.0 million for each of the four Collaboration Targets if defined milestones
are  achieved,  as  well  as  royalties  on  net  sales  associated  with  any  Collaboration  Target.  On  December  17,  2020,  BMS
designated  one  of  the  four  Collaboration  Targets  as  a  candidate  to  advance  into  IND-enabling  studies  entitling  the
Company  to  receive  a  $4.4  million  research  milestone  payment.  The  Company  recorded  the  $4.4  million  as  License
Revenue in the twelve-month period ended December 31, 2020.

The amended BMS CLA does not extend the initial research term. BMS may place purchase orders to provide
limited services primarily related to analytical and development efforts in respect of the four Collaboration Targets. BMS
may request such services for a period not to exceed the earlier of (i) the completion of all activities under a Research Plan
and  (ii)  either  (A)  three  years  after  the  last  replacement  target  has  been  designated  by  BMS  during  the  one-year
replacement  period  following  the  amended  BMS  CLA  effective  date  or  (B)  three  years  if  no  replacement  targets  are
designated during this one-year period and BMS continues to reimburse us for these services.

 For as long as any of the four Collaboration Targets are being advanced, BMS may place a purchase order to be
supplied with research, clinical and commercial supplies. Subject to the terms of the amended BMS CLA, BMS has the
right  to  terminate  the  research,  clinical  and  commercial  supply  relationships,  and  has  certain  remedies  for  failures  of
supply, up to and including technology transfer for any such failure that otherwise cannot be reasonably resolved. Both we
and  BMS  may  agree  to  a  technology  transfer  of  manufacturing  capabilities  pursuant  to  the  terms  of  the  amended  BMS
CLA.

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The  amended  BMS  CLA  also  terminated  two  warrants  to  increase  BMS  ownership  in  the  Company  to  up  to
19.9%  through  purchasing  a  specific  number  of  our  ordinary  shares  following  the  designation  of  a  seventh  and  a  tenth
Collaboration Target, respectively. 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) 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  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. We have not consummated any change of control transaction
as of December 31, 2020 that would obligate us to make a payment to BMS.

Hemophilia B program – Etranacogene dezaparvovec (AMT-061)

In  August  2018,  we  initiated  a  Phase  IIb  dose-confirmation  study  of  etranacogene  dezaparvovec  and  in
September 2018, we completed the dosing for that study. In February, May, July, and December 2019, and in December
2020,  we  presented  updated  data  from  the  Phase  IIb  dose-confirmation  study  of  etranacogene  dezaparvovec.  The  most
recent  data  that  we  announced  from  the  Phase  IIb  study  of  etranacogene  dezaparvovec  show  that  all  three  patients
experienced increasing and sustained FIX levels after a one-time administration of etranacogene dezaparvovec. Mean FIX
activity  was  44.2%  of  normal  two  years  after  administration,  exceeding  threshold  FIX  levels  generally  considered
sufficient to significantly reduce the risk of bleeding events. The first patient achieved FIX activity of 44.7% of normal, the
second  patient  was  51.6%  of  normal  and  the  third  patient  was  36.3%  of  normal.  The  second  and  third  patients  had
previously screen-failed and were excluded from another gene therapy study due to pre-existing neutralizing antibodies to a
different  AAV  vector.  At  two  years  after  dosing,  two  of  the  three  participants  remain  free  from  bleeds  and  use  of  FIX
replacement  therapy.  A  single  bleed  has  been  reported  in  one  participant,  who  has  used  a  total  of  two  FIX  infusions
(excluding  surgery).  All  patients  have  remained  free  of  prophylaxis  in  the  two  years  since  receiving  etranacogene
dezaparvovec.

In June 2018, we initiated the six-month lead-in period of our HOPE-B trial. The HOPE-B trial is a multinational,
multi-center, open-label, single-arm study to evaluate the safety and efficacy of etranacogene dezaparvovec. After the six-
month lead-in period, patients received a single intravenous administration of etranacogene dezaparvovec. Patients enrolled
in the HOPE-B trial were tested for the presence of pre-existing neutralizing antibodies to AAV5 but not excluded from the
trial based on their titers.

The primary endpoints of the study are based on the FIX activity level achieved following the administration of
etranacogene dezaparvovec after 26 weeks and 52 weeks after dosing as well annualized bleed rates during the 52 weeks
after dosing.

In March 2020, we completed dosing of the 54 patients in the HOPE-B trial. The targeted number of patients to be
dosed per the clinical trial protocol was 50. In December 2020, we announced top-line data from the HOPE-B trial. The
26-week follow-up date from the trial showed that FIX activity in the 54 patients increased after dosing from ≤ 2% to a
mean of 37.2% at 26 weeks, meeting a first primary endpoint of the HOPE-B trial. No correlation between pre-existing
neutralizing  antibodies  and  FIX  activity  was  found  in  patients  with  neutralizing  antibody  titers  up  to  678.2,  a  range
expected to include more than 95% of the general population; one patient with a neutralizing antibody titer of 3,212.3 did
not show an increase in FIX activity. Less than 1% of the general population is expected to have neutralizing antibody titers
of greater than 3,000.

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 During the 26-week period after dosing, 15 patients (28%) reported a total of 21 bleeding events, representing a
reduction  of  83%  compared  to  the  123  bleeding  events  reported  by  38  patients  (70%)  during  the  observational  lead-in
phase  of  the  trial.  Total  bleeds  include  any  bleeding  event  reported  after  the  treatment  of  etranacogene  dezaparvovec,
including spontaneous, traumatic, and those associated with unrelated medical procedures, whether or not FIX treatment
was required. Of the total bleeding events reported during the 26-week period after dosing, only three were classified as
spontaneous bleeds requiring treatment, representing a reduction of 92% compared to the 37 such bleeding events reported
during the observational lead-in phase. Mean annualized usage of FIX replacement therapy, a secondary endpoint in the
clinical  trial,  declined  by  96%  during  the  26-week  period  after  dosing  compared  to  the  observational  lead-in  phase.
Etranacogene dezaparvovec was generally well-tolerated. As of the November 2020 cut-off date, most adverse events were
classified as mild (81.5%). The most common events included transaminase elevation treated with steroids per protocol (9
patients;  17%),  infusion-related  reactions  (7  patients;  13%),  headache  (7  patients;  13%)  and  influenza-like  symptoms  (7
patients; 13%). Liver enzyme elevations resolved with a tapering course of corticosteroids and FIX activity remained in the
mild  range  in  the  steroid  treated  patients.  No  relationship  between  safety  and  neutralizing  antibody  titers  was  observed.
Based on interactions with the FDA and the EMA, we plan to incorporate FIX activity and bleeding rates at 52 weeks as
additional co-primary endpoints in the study.

On December 21, 2020, our clinical trials of etranacogene dezaparvovec, including our HOPE-B trial were placed
on clinical hold by the FDA. The clinical hold was initiated following the submission of a safety report in mid-December
relating to a possibly related serious adverse event associated with a preliminary diagnosis of HCC, a form of liver cancer,
in  one  patient  in  the  HOPE-B  trial  that  was  treated  with  etranacogene  dezaparvovec  in  October  2019.  The  patient  has
multiple risk factors associated with HCC, including a twenty-five-year history of HCV, HBV, evidence of non-alcoholic
fatty liver disease and advanced age. Chronic infections with hepatitis B and C have been associated with approximately
80% of HCC cases.

The  liver  lesion  was  detected  during  a  routine  abdominal  ultrasound  conducted  as  part  of  the  required  study
assessments in patients at one-year post dosing. A surgical resection of the lesion has occurred, and an analysis of the tissue
samples  was  initiated  in  early  2021.  On  February  19,  2021,  we  reported  initial  results  from  this  analysis  to  the  FDA  in
accordance with pharmacovigilance requirements. We are gathering final data from these molecular analyses and will be
preparing a detailed response to the FDA’s clinical hold questions regarding this event. Currently, we do not have adequate
data to determine a possible causal relationship, especially in the context of the other known risk factors. We currently do
not anticipate any impact on our regulatory submission timelines, including the filing of a BLA.

No other cases of HCC have been reported in our clinical trials conducted in more than 67 patients in hemophilia

B, with some patients dosed more than 5 years ago.

Phase I/II Clinical Trial of AMT-060

In the third quarter of 2015, we initiated a Phase I/II clinical trial of AMT-060, our first-generation hemophilia B
product candidate, in patients with severe or moderately-severe hemophilia B. We enrolled five patients into a low dose
cohort in the third quarter 2015. Another five patients were enrolled into a high dose cohort between March and May 2016.

In December 2020, we presented five-year follow-up data related to this Phase I/II clinical trial. All 10 patients
enrolled continue to show long-term clinical benefit, including sustained increases in FIX activity, reduced usage of FIX
replacement therapy, and decreased bleeding frequency. At up to five years of follow-up, AMT-060 continues to be well-
tolerated, with no new treatment-related adverse events since the last reported data and no development of inhibitors during
the study.

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Huntington’s disease program (AMT-130)

AMT-130  is  our  gene  therapy  candidate  targeting  Huntington’s  disease  that  utilizes  an  AAV  vector  carrying  an
engineered miRNA designed to silence HTT and exon 1 HTT, a potentially highly toxic protein fragment that may also
contribute  to  disease  pathology.  AMT-130  comprises  a  recombinant  AAV5  vector  carrying  a  DNA  cassette,  encoding  a
miRNA that non-selectively lowers or knocks-down HTT and exon 1 HTT in Huntington’s disease patients.

In January 2019, our IND application for AMT-130 was cleared by the FDA, thereby enabling us to initiate our
planned Phase I/II clinical study. The primary objective of the study is to evaluate the safety, tolerability, and efficacy of
AMT-130 at two doses.

In June 2020, we announced the completion of the first two patient procedures in the Phase I/II clinical trial of
AMT-130 for the treatment of Huntington’s disease. These procedures occurred after a postponement that resulted from the
COVID-19 pandemic and the associated states of emergency declarations in the United States. The Phase I/II protocol is a
randomized,  imitation  surgery-controlled,  double-blinded  study  conducted  at  three  surgical  sites,  and  multiple  referring,
non-surgical sites in the U.S. The primary objective of the study is to evaluate the safety, tolerability, and efficacy of AMT-
130 at two doses.

On September 25, 2020, we announced that the independent Data Safety Monitoring Board (DSMB) overseeing
the Phase I/II clinical trial of AMT-130 for the treatment of Huntington’s disease has met and reviewed 90-day safety data
from the first two patients enrolled in the trial. No significant safety concerns were noted to prevent further dosing.

On October 13, 2020, we announced the completion of the third and fourth patient procedures in the Phase I/II

clinical trial.

On February 8, 2021, we announced that the DSMB met and reviewed the six-month safety data from the first
two  enrolled  patients  and  the  90-day  safety  data  from  the  next  two  enrolled  patients  in  the  study.  No  significant  safety
concerns were noted to prevent further dosing, and the final six patients in the first cohort are now cleared for enrollment.

Preclinical programs

Spinocerebellar Ataxia Type 3 program (AMT-150)

AMT-150 is our novel gene therapy candidate for the treatment of SCA3, also known as Machado-Joseph disease,
which is caused by a CAG-repeat expansion in the ATXN3 gene that results in an abnormal form of the protein ataxin-3.
 AMT-150 is a one-time, intrathecally-administered, AAV gene therapy incorporating our proprietary miQURE silencing
technology that is designed to halt ataxia in early manifest SCA3 patients.

  At  the  2019  American  Academy  of  Neurology  Annual  Meeting,  we  presented  preclinical  data  on  AMT-150
demonstrating  mechanistic  proof-of-concept  of  the  non-allele-specific  ataxin-3  protein-silencing  approach  by  using
artificial  miRNA  candidates  engineered  to  target  the  ataxin-3  gene  in  a  SCA3  knock-in  mouse  model.  In  this  proof-of-
concept  study,  a  single  AMT-150  injection  in  the  cerebrospinal  fluid  resulted  in  AAV  transduction  and  mutant  ataxin-3
lowering at the primary sites of disease neuropathology, the cerebellum (up to 53%) and the brainstem (up to 65%).  

In May 2020, we presented preclinical data at the ASGCT Annual Meeting, on our gene therapy candidate SCA3.
In  an  in  vivo  preclinical  study,  six  NHP  received  a  one-time  injection  of  AMT-150  via  the  cisterna  magna  to  assess
expression and distribution. Samples taken after eight weeks showed widespread transduction of the brain and spinal cord,
with the highest genome copies found in the posterior fossa and cortical regions. In other preclinical studies, researchers
evaluated  AMT-150  in  SCA3  mouse  models,  as  well  as  human  iPSC-derived  neurons  and  astrocytes,  to  investigate
potential  off-target  effects  of  AAV5-miATXN3.  The  iPSC-derived  cell  cultures,  which  were  derived  from  two  SCA3
patients,  represent  the  most  disease-relevant  cell  type  for  therapeutic  targeting  of  AMT-150.  A  clear  dose-dependent
expression  of  miATXN3  was  observed  in  the  iPSC-derived  neurons  and  astrocytes  transduced  with  AMT-150.  Mature
miATXN3 molecules were also associated with extracellular vesicles that strongly correlated with the dose and miATXN3
expression, suggesting the potential therapeutic spread of the engineered miATXN3. Additionally, AMT-150 demonstrated
ATXN3 knockdown in human neurons and various SCA3 mouse models with subsequent neuropathology improvement.

In September 2020, we initiated a safety and toxicology study of AMT-150 in NHP.

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Fabry disease program (AMT-190)

AMT-190  is  our  novel  gene  therapy  candidate  for  the  treatment  of  Fabry  disease.  AMT-190  is  a  one-time,  IV-

administered, AAV5-based gene therapy.

In September 2020, we selected a lead gene therapy candidate (AMT-190) for the treatment of Fabry disease to
advance into IND-enabling studies. The lead candidate is a one-time administered AAV5 gene therapy incorporating the α-
galactosidase  A  (GLA)  transgene.  In  preclinical  studies  comparing  multiple  product  candidates,  including  constructs
incorporating  a  modified  alpha-N-acetylgalactosaminidase  transgene  (modNAGA),  AMT-190  demonstrated  the  most
robust and sustained increases in GLA activity.

Hemophilia A program (AMT-180)

In  June  2020,  we  announced  that  we  plan  to  de-prioritize  our  research  program  of  AMT-180  for  patients  with
hemophilia  A,  as  part  of  our  effort  to  focus  on  those  gene  therapy  programs  that  have  the  greatest  potential  to  improve
patients’ lives and generate long-term value for shareholders.

Term loan facility

As  of  December  31,  2020,  a  $35.0  million  term  loan  was  outstanding  in  accordance  with  the  2018  Amended

Facility between us and Hercules.

On January 29, 2021 we and Hercules entered into the 2021 Amended Facility. Pursuant to the 2021 Amended
Facility, Hercules agreed to the 2021 Term Loan, increasing the aggregate principal amount of the term loan facility from
$35.0 million to up to $135.0 million. On January 29, 2021 we drew down $35.0 million of the 2021 Term Loan. We may
draw down the remaining $65.0 million under the 2021 Term Loan in a series of one or more advances of not less than
$20.0  million  each  until  December  15,  2021.  Advances  under  the  2021  Term  Loan  bear  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  and  all  accrued  but
unpaid interest on advances under the 2021 Term Loan is due on June 1, 2023, which date may be extended by us by up to
two  twelve-month  periods.  Advances  under  the  2021  Term  Loan  may  not  be  prepaid  until  six  months  after  the  Closing
Date, following which we may prepay all such advances without charge.

In addition to the 2021 Term Loan, the amendment also extends the interest only payment period of the previously
funded $35.0 million term loan from January 1, 2022 to June l, 2023. End of term charges in respect of advances under the
2021 Term Loan range from 1.65% to 6.85%, depending on the maturity date.

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COVID-19 measures

Starting  March  2020,  we  implemented  measures  to  address  the  impact  of  COVID-19  on  our  business.  We
mandated a work-from-home policy for all non-essential employees at our Amsterdam and Lexington facilities when the
pandemic began. We implemented a series of protocols governing the operations of our Lexington facility to comply with
the requirements of the various orders and guidance from the Commonwealth of Massachusetts and other related orders,
guidance,  laws,  and  regulations.  We  supported  our  employees  in  setting  up  a  healthy  and  efficient  remote  working
environment. In conjunction with implementing this policy, we accelerated the roll-out of several information technology
security measures such as dual factor authentication, to address the increased risks that to which we might be exposed as a
result  of  remote  working  conditions.  In  addition,  we  conducted  awareness  training  around  cybersecurity  for  critical
functions  involved  in  making  payments  to  vendors  such  as  finance  and  supply  chain.  We  continue  to  monitor  local
government rules and recommendations and office protocols will be aligned with these rules and recommendations.

We conduct frequent status video-meetings of local management at our two sites as well as leadership-team video
meetings to implement these measures and to monitor the evolving situation. In addition, we inform our employees through
periodic newsletters and have organized virtual local and global townhalls to share information and provide direction and
support to our employees.

We started to reopen the Amsterdam and Lexington facilities in phases, in line with the reopening plans that are
prescribed  by  the  local  government.  Between  June  1,  2020  until  September  29,  2020,  we  encouraged  our  Amsterdam
employees to work a minimum of two days per week from the office, and approximately 50% of local staff worked on site
during that period. As of September 29, 2020, we reinstated the mandatory work-from-home policy that was initiated in
March in Amsterdam to align with the updated Dutch government’s measures. Employees based in Amsterdam who cannot
perform  their  duties  outside  of  our  Amsterdam  facility  will  continue  to  work  at  our  Amsterdam  facility.  We  adapted  to
operate  our  laboratories  at  our  Amsterdam  site  to  comply  with  social  distancing  rules  and  to  ensure  the  health  and
wellbeing  of  our  employees  under  the  current  circumstances.  All  other  employees  in  Amsterdam  will  work  from  home
through at least the end of August 2021, partly in conjunction with the ongoing expansion of our laboratory space.

As  a  biopharma  research  and  development  company,  we  were  deemed  to  provide  essential  services  under  the
“stay  at  home”  advisory  that  was  issued  by  the  Governor  of  Massachusetts  on  March  23,  2020  and  we  therefore  have
maintained  our  manufacturing  operations  at  our  Lexington  site.  To  ensure  adequate  social  distancing  in  our  Lexington
facility, our COVID-19 protocols generally have limited occupancy to numbers below those allowed by the Massachusetts
COVID-19 guidelines. In our Lexington facility, we currently have implemented an occupancy limitation of approximately
25%. Our employees that cannot perform their duties outside of our Lexington facility continue to work at our Lexington
facility.  All  other  employees  are  required  to  work  remotely  to  the  extent  possible  through  at  least  the  end  of  the  second
quarter  of  2021.  Our  actual  occupancy  at  the  Lexington  facility  has  been  less  than  approximately  25%  of  our  permitted
occupancy during all phases of the Massachusetts reopening plan. We have also implemented a mandatory COVID-19 PCR
testing  protocol  effective  February  11,  2021  that  requires  employees  to  have  tested  negative  for  COVID-19  prior  to
entering the Lexington facility.

We have adapted our ongoing clinical research activities based on the directions and flexibility provided by the
“FDA  Guidance  on  Conduct  of  Clinical  Trials  of  Medical  Products  during  COVID-19  Pandemic”  issued  on  March  18,
2020 and updated throughout the pandemic to minimize any risk, disruption or delay in either patient dosing or follow-up
visits.  These  procedures  occurred  after  a  postponement  that  resulted  from  the  COVID-19  pandemic  and  the  associated
states of emergency declarations in the United States.

The  broader  implications  of  COVID-19  on  our  results  of  operations  and  overall  financial  performance  remain
uncertain. The COVID-19 pandemic and its adverse effects have become more prevalent in the locations where we, and
our third-party business partners conduct business. While we have experienced disruptions in our operations as a result of
COVID-19,  we  are  adapting  to  the  current  environment  to  minimize  the  effect  to  our  business.  However,  we  may
experience more pronounced disruptions in our operations in the future.

Related party transaction

On  December  1,  2020,  we  and  BMS  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.

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2020 Financial Highlights

Key components of our results of operations include the following:

2020

Total revenues
Research and development expenses
Selling, general and administrative expenses
Net loss

2018

Year ended December 31, 
2019
(in thousands)
 7,281
$
 (94,737)
 (33,544)
 (124,201)

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

$  11,284
 (74,809)
 (25,305)
 (83,304)

As  of  December  31,  2020,  we  had  cash  and  cash  equivalents  of  $244.9  million  (December  31,  2019:
$377.8  million).  We  had  a  net  loss  of  $125.0  million  in  2020,  $124.2  million  in  2019  and  $83.3  million  in  2018.  As  of
December 31, 2020, we had an accumulated deficit of $784.7 million (December 31, 2019: $659.7 million).

We anticipate that our expenses will increase substantially as we:

● Advance the clinical development of AMT-130 for our Huntington’s disease gene therapy program;
● Build-out  our  commercial  and  medical  affairs  infrastructure  and  seek  marketing  approval  for  any  product
candidates (including etranacogene dezaparvovec in the event that the transactions contemplated by the CSL
Behring Agreement do not close) that successfully complete clinical trials;

● Advance  multiple  research  programs  related  to  gene  therapy  candidates  targeting  liver-directed  and  CNS

diseases;

● Continue  to  expand,  enhance,  and  optimize  our  technology  platform,  including  our  manufacturing

capabilities, next-generation viral vectors and promoters, and other enabling technologies;

● Acquire or in-license rights to new therapeutic targets or product candidates; and
● Maintain, expand, and protect our intellectual property portfolio, including in-licensing additional intellectual

property rights from third parties.

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

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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  income/loss  and  affect  the  reported  amounts  of  certain  assets,  liabilities,  revenue  and  expenses,  and  related
disclosures. On an ongoing basis, we evaluate our estimates and judgments, including those related to the treatment of the
CSL  Behring  Agreement,  the  amended  BMS  CLA,  share-based  payments,  corporate  income  taxes  related  to  valuation
allowance  and  accounting  for  operating  leases  under  ASC  842.  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 or conditions. In making estimates and
judgments,  management  employs  critical  accounting  policies.  We  also  discuss  our  critical  accounting  policies  and
estimates with the Audit Committee of our Board of Directors.

We  believe  that  the  assumptions,  judgments,  and  estimates  involved  in  the  treatment  of  the  CSL  Behring
Agreement,  the  amended  BMS  CLA,  share-based  payments,  corporate  income  taxes  related  to  valuation  allowance  and
accounting  for  operating  leases  under  ASC  842  to  be  our  critical  accounting  policies.  Historically,  our  assumptions,
judgments and estimates relative to our critical accounting policies have not differed materially from actual results.

CSL Behring Agreement

The effectiveness of the transactions contemplated by the CSL Behring Agreement is contingent on completion of
review  under  antitrust  laws  in  the  United  States,  Australia,  and  the  United  Kingdom  and  certain  provisions  of  the  CSL
Behring Agreement will not become effective until after we receive all such regulatory approvals. We obtained regulatory
approvals in Australia and the United Kingdom prior to January 6, 2021. We received a Second Request from the FTC on
January 4, 2021, and as such, regulatory approval in the United States has not occurred to date. We do not believe that the
FTC will determine that the consummation of the transaction will result in a violation of the HSR Act. However, there can
be no assurance as to the outcome of the Second Request.

As of December 31, 2020, we concluded that we have no enforceable right to receive the $450.0 million upfront
payment,  in  accordance  with  the  CSL  Behring  Agreement  as  payment  is  contingent  upon  the  successful  completion  of
reviews  under  the  HSR  Act.  Therefore,  we  determined  we  will  not  recognize  any  revenue  in  relation  to  the  upfront
payment,  the  regulatory  and  sale  milestone  payments,  or  the  royalties  (together  “CSL  Behring  License  Revenue”)  in
accordance  with  ASC  606.  We  incurred  $2.1  million  of  expenses  related  to  obligations  related  to  the  CSL  Behring
Agreement that had not been satisfied as of December 31, 2020. We capitalized these expenses as we believe these qualify
as contract fulfillment costs. As of December 31, 2020, we also recognized a $2.1 million receivable from CSL Behring for
expenses for which we have a right of reimbursement as well as a contract liability for the same amount. In accordance
with ASC 606, we cannot recognize any revenue in connection with the CSL Behring Agreement as of this date.

In accordance with our existing license and other agreements, we are contractually required to pay in total a low to
high single digit percentage of any upfront payment to our licensors and financial advisor (“License Fees”). We did not
record any License Fees in the year ended December 31, 2020, as we had not recognized the upfront payment as of this
date.

Amended BMS CLA

In May 2015, we entered into a collaboration and license agreement and various related agreements with BMS,
which  we  collectively  refer  to  as  the  BMS  CLA,  which  provided  BMS  with  exclusive  access  to  our  gene  therapy
technology  platform  for  the  research,  development  and  commercialization  of  therapeutics  aimed  at  multiple  targets  in
cardiovascular and other diseases. The BMS CLA provided that we and BMS could have potentially collaborated on up to
ten Collaboration Targets in total. The initial four-year research term under the collaboration terminated on May 21, 2019.
During the initial research term of the BMS CLA, BMS, at its option, could purchase non-clinical, analytical and process
development  effort  services.  For  any  Collaboration  Targets  that  might  have  been  advanced,  BMS  could  have  purchased
clinical and commercial supplies from us. BMS reimbursed us for the services in support of the collaboration during the
initial research term, and leads the development, regulatory and commercial activities for any Collaboration Targets that are
advanced.

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On  December  1,  2020,  we  and  BMS  amended  the  BMS  CLA.  Following  the  amendment  BMS  is  no  longer
entitled  to  designate  a  fifth  to  tenth  Collaboration  Target  and  as  such  we  are  no  longer  entitled  to  receive  an  aggregate
$16.5 million in target designation payments or research, development, and regulatory milestone payments related to the
fifth and tenth Collaboration Targets. For a period of one year from the effective date of the amended BMS CLA, BMS
may replace up to two of the four active Collaboration Targets with two new targets in the field of cardiovascular disease.
We continue to be entitled to receive up to $217.0 million for each of the four Collaboration Targets if defined milestones
are achieved, as well as royalties on net sales associated with any Collaboration Target.

We evaluated the impact of the amendment of the BMS CLA in relation to our performance obligation related to:

-

providing  access  to  our  technology  and  know-how  in  the  field  of  gene  therapy  and  participating  in  joint
steering  committee  and  other  governing  bodies  (materially  satisfied  as  of  December  1,  2020)  (“License
Revenue”).

We  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.  We evaluated the effect the modification has on our measure of
progress towards the completion of our performance obligation in relation to License Revenue and recorded an adjustment
to License Revenue as of December 1, 2020. The estimation of total services at the end of each reporting period involves
considerable judgement.

The amount of services we expect to provide is significantly impacted by the number of Collaboration Targets that
we  estimate  BMS  would  pursue.  We  considered  that  BMS  may  no  longer  designate  potentially  up  to  six  Collaboration
Targets in addition to the currently four active targets. We evaluated our obligations with respect to the two replacement
cardiovascular indications that BMS might potentially designate until November 30, 2021, and the services we expected to
perform in relation to participating in joint steering committee and other governing bodies as well as the effort required to
actively  contribute  to  the  target  selection  process  or  the  collaboration  as  a  whole.  Based  on  this  we  concluded  that  our
remaining performance obligation is immaterial and adjusted our measure of progress accordingly. As such we 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.

In  2015  we  granted  BMS  two  warrants,  which  were  terminated  in  connection  with  the  amendment  to  the  BMS

CLA. We granted to BMS:

● A warrant that allowed BMS to purchase a specific number of our 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 we 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).

● A warrant that allowed BMS to purchase a specific number of our ordinary shares such that its ownership
would have equaled 19.9% immediately after such purchase (“2nd warrant” and together with the 1st warrant,
the “warrants”). The warrant could have been exercised on the later of (i) the date on which we 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).

Pursuant to the terms of the BMS CLA the exercise price in respect of each warrant was equal to the greater of (i)
the  product  of  (A)  $33.84,  multiplied  by  (B)  a  compounded  annual  growth  rate  of  10%  (or  approximately  $57.32  as  of
November 30, 2020) and (ii) the product of (A) 1.10 multiplied by (B) the volume weighted average price (“VWAP”) for
the 20 trading days ending on the date that is five trading days prior to the date of a notice of exercise delivered by BMS.

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We used Monte-Carlo simulations to determine the fair market value of the BMS warrants. The valuation model
incorporated several inputs, the risk-free rate adjusted for the period affected, an expected volatility based on our historical
volatility, the expected yield on any dividends and management’s expectations on the timelines of reaching certain defined
trigger events for the exercising of the warrants, as well as management’s expectations regarding the number of ordinary
shares that would be issued upon exercise of the warrants. All of these represent Level 3 inputs. Additionally, the model
assumed BMS would exercise the warrants only if it were financially rational to do so. The warrants could only have been
exercised  following  the  occurrence  of  events  contractually  defined  in  the  warrant  agreements.  The  probability  of  the
occurrence of these events represented another significant unobservable input used in the calculation of the fair value of the
warrants. The fair value of the warrants as of December 31, 2019 was $3.1 million. During the year ended December 31,
2020,  we  recognized  a  $3.1  million  gain  in  non-operating  income  /  expense  (December  31,  2019:  $2.3  million  loss;
December 31, 2018: $0.5 million gain) related to fair value changes of the BMS warrants. The gain recognized in the year
ended December 31, 2020 includes $0.8 million from the derecognition of the BMS warrants on December 1, 2020.

On December 1, 2020, we and BMS terminated the BMS warrants and 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, uniQure (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”). We have not
consummated any change of control transaction as of December 31, 2020 that would obligate us to make a CoC-payment.
We determined that the CoC-payment should be recorded as a derivative financial liability as of December 1, 2020 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 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.  We  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  event  within  the  biotechnology
industry. We estimated this unobservable input using the best information available as of December 1, 2020 and December
31,  2020.  We  obtained  reasonably  available  market  information  that  we  believe  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 judgement and uncertainty. Based on all such information and our
judgment we estimated that the fair market value of the derivative financial liability (presented within “Other non-current
liabilities”)  as  of  December  1,  2020  and  December  31,  2020  was  $2.6  million.  We  recorded  a  $2.6  million  loss  within
“other non-operating expenses” in the twelve-month period ended December 31, 2020 related to the initial recognition of
this derivative financial liability.

Share-based payments

We issue share-based compensation awards, in the form of options to purchase ordinary shares, restricted share
units  and  performance  share  units,  to  certain  of  our  employees,  executive  and  non-executive  board  members,  and
consultants. We measure share-based compensation expense related to these awards by reference to the estimated fair value
of the award at the date of grant. The awards are subject to service and/or performance-based vesting conditions. The total
amount of the awards is expensed on a straight-line basis over the requisite vesting period.

We  use  a  Hull  &  White  option  model  to  determine  the  fair  value  of  option  awards.  The  model  captures  early
exercises by assuming that the likelihood of exercise will increase when the share-price reaches defined multiples of the
strike price. This analysis is made over the full contractual term.

At  each  balance  sheet  date,  we  revise  our  estimate  of  the  number  of  options  that  are  expected  to  become
exercisable.  We  recognize  the  impact  of  the  revision  of  original  estimates,  if  any,  in  the  statements  of  operations  and
comprehensive  loss  and  a  corresponding  adjustment  to  equity.  We  expect  all  vested  options  to  be  exercised  over  the
remainder of their contractual life. We consider the expected life of the options to be in line with the average remaining
term of the options post vesting.

We  account  for  share  options  as  an  expense  in  the  statements  of  operations  and  comprehensive  loss  over  the

estimated vesting period, with a corresponding contribution to equity, as they are all equity-classified.

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Corporate income taxes

We are subject to corporate taxes in the Netherlands and the United States of America. Significant judgment is
required  in  determining  the  valuation  allowance  in  relation  to  our  net  operating  loss  carry  forwards.  We  have  been
incurring net operating losses in accordance with the respective corporate tax laws in almost all years since we founded our
business. As of December 31, 2020, the total amount of net operating losses carried forward under the Dutch tax regime
was $588.2 million and $42.3 million in the United States of America.

We  reassessed  the  need  for  a  full  valuation  allowance  in  conjunction  with  entering  into  the  CSL  Behring
Agreement.  The  effectiveness  of  the  transactions  contemplated  by  the  CSL  Behring  Agreement  is  contingent  on
completion of review under antitrust laws in the United States, Australia, and the United Kingdom. Regulatory approval in
the United States has not occurred to date. We recognize deferred tax assets to the extent that we determine that these assets
are  more  likely  than  not  to  be  realized.  In  making  such  a  determination,  we  weighed  all  available  positive  and  negative
evidence, including future income projections from the CSL Behring Agreement, and concluded that it is more likely than
not that the deferred tax assets will not be realized. Accordingly, we continued to record a full valuation allowance as of
December  31,  2020  in  the  Netherlands.  As  of  December  31,  2020,  our  valuation  allowance  amounted  to  $150.1  million
(2019: $109.9 million).

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 United States as of December 31, 2020. Our U.S. entity has
generated  taxable  income  in  the  fiscal  years  2018,  2019  and  2020.  Based  on  the  current  design  of  our  worldwide
operations,  we  expect  to  continue  to  generate  taxable  income  in  the  U.S.  during  the  foreseeable  future  and  therefore
determined that it is more likely than not that our U.S. deferred tax assets will be realized. Our U.S. deferred tax assets as
of December 31, 2020 amount to $16.4 million.

Leases

On  January  1,  2019,  we  adopted  ASC  842,  “Leases  (Topic  842)”.  We  adopted  the  standard  using  the  modified
retrospective approach with an effective date as of the beginning of our fiscal year, January 1, 2019, to operating leases that
existed  on  that  date.  Comparative  financial  information  related  to  profit  and  loss  and  cash  flows  for  the  twelve-month
period ended December 31, 2018, was not recast under the new standard, and continues to be presented under ASC 840.

We measured the lease liability at the present value of the future lease payments as of January 1, 2019. We used an
incremental borrowing rate to discount the lease payments. We derived the discount rate, adjusted for differences such as in
the  term  and  payment  patterns,  from  our  loan  from  Hercules  Capital,  which  was  refinanced  immediately  prior  to  the
January  1,  2019  adoption  date  in  December  2018.  We  valued  the  right-of-use  asset  at  the  amount  of  the  lease  liability
reduced  by  the  remaining  December  31,  2018  balance  of  lease  incentives  received.  The  lease  liability  is  subsequently
measured at the present value of the future lease payments as of the reporting date with a corresponding adjustment to the
right-to-use asset. Absent a lease modification, we will continue to utilize the January 1, 2019, incremental borrowing rate.

We  recognize  lease  cost  on  a  straight-line  basis  and  present  these  costs  as  operating  expenses  within  our
Consolidated  statements  of  operations  and  comprehensive  loss.  We  present  lease  payments  and  landlord  incentive
payments within cash flows from operations within our Consolidated statements of cash flows.

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Recent Accounting Pronouncements

ASU 2018-13: Fair Value Measurement

In  August  2018,  the  FASB  issued  ASU  2018-13,  Fair  Value  Measurement  (Topic  820)  which  modifies  the
disclosure  requirements  on  fair  value  measurements.  The  effective  date  for  the  standard  is  fiscal  years  beginning  after
December  15,  2019,  which  for  us  is  January  1,  2020.  Early  adoption  is  permitted.  The  new  disclosure  requirements  for
changes in unrealized gains and losses in other comprehensive income for recurring Level 3 measurements, the range and
weighted  average  of  significant  unobservable  inputs  and  the  amended  requirements  for  the  narrative  description  of
measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the
initial  fiscal  year  of  adoption.  All  other  amendments  should  be  applied  retrospectively.  ASU  2018-13  did  not  have  a
material impact on our consolidated financial statements.

Recent Accounting Pronouncements Not Yet Effective

None.

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Results of Operations

The following table presents a comparison of the twelve months ended December 31, 2020, 2019 and 2018.

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

Revenue

Year ended December 31, 

2020

2019

2018
(in thousands)

2020 vs 2019

2019 vs 2018

$

 37,514 $

 7,281 $

 11,284 $  30,233

$

 (4,003)

 (122,400)
 (42,580)
 (164,980)
 3,342
 (1,302)
 (125,426)
 (16,017)

 (94,737)
 (33,544)
 (128,281)
 1,888
 (2,028)
 (121,140)
 (3,061)

 (74,809)
 (25,305)
 (100,114)
 2,146
 (1,548)
 (88,232)
 5,159
$  (141,443) $  (124,201) $  (83,073)
 (231)

 16,419

 —

$  (125,024) $  (124,201) $  (83,304) $

 (27,663)
 (9,036)
 (36,699)
 1,454
 726
 (4,286)
 (12,956)
 (17,242)
 16,419

 (19,928)
 (8,239)
 (28,167)
 (258)
 (480)
 (32,908)
 (8,220)
 (41,128)
 231
 (823) $  (40,897)

We  recognize  collaboration  revenues  associated  with  Collaboration  Target-specific  pre-clinical  analytical
development  and  process  development  activities  that  are  reimbursable  by  BMS  under  the  BMS  CLA  and  the  amended
BMLS CLA as well as other related agreements. Collaboration Revenue related to these contracted services is recognized
when performance obligations are satisfied.

We  recognized  license  revenues  associated  with  the  amortization  of  the  non-refundable  upfront  payment  and
target designation fees we received from BMS in 2015. 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  as  of  December  1,  2020.  In  accordance  with  the  amended  BMS  CLA,  we  continue  to  be  eligible  to  receive
research, development, and regulatory milestone payments as well as sales milestone payments and royalties for each of
the  four  active  Collaboration  Targets  if  defined  milestones  are  achieved  in  relation  to  the  license  to  our  technology  and
know-how. We will recognize revenue from these payments when earned or as sales occur.

Our revenue for the years ended December 31, 2020, 2019 and 2018 was as follows:

License revenue
Collaboration revenue
Total revenues

Year ended December 31, 

2020

2019

2018

2020 vs 2019 2019 vs 2018

$  37,319
 195
$  37,514

$

$

 4,988
 2,293
 7,281

(in thousands)
$

 7,528
 3,756
$  11,284

$  32,331
 (2,098)
$  30,233

$

$

 (2,540)
 (1,463)
 (4,003)

We recognized $37.3 million, $5.0 million, and $7.5 million of license revenue for the year ended December 31,
2020, 2019 and 2018, respectively. The increase in license revenue in 2020 of $32.2 million compared to 2019 primarily
resulted  from  $27.8  million  of  license  revenue  that  we  recognized  as  of  the  December  1,  2020  effective  date  of  the
amended BMS CLA as well as $4.4 million research milestone payment that we recorded in December 2020 following the
designation of one of the four Collaboration Targets as a candidate to advance into IND-enabling studies. The decrease in
license  revenue  in  2019  of  $2.5  million  compared  to  2018  resulted  from  the  termination  of  the  S100A1  Collaboration
Target and subsequent designation of a replacement target in 2019.

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We recognized $0.2 million, $2.3 million, and $3.8 million of collaboration revenue for the years ended December
31, 2020, 2019 and 2018, respectively. The decrease in collaboration revenue in 2020 of $2.1 million compared to 2019
was  primarily  related  to  the  reduction  of  activities  following  the  termination  of  the  initial  research  term  under  the  BMS
CLA  in  May  2019.  The  decrease  in  collaboration  revenue  in  2019  of  $1.5  million  compared  to  2018  resulted  from  the
termination  of  the  initial  research  term  in  May  2019  as  well  as  the  discontinuation  of  the  S100A1  program  in  October
2018.

Research and development expenses

We expense research and development costs (“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 validation of our Lexington facility;
● Costs incurred for the development and improvement of our manufacturing processes and methods;
● Costs associated with our research activities for our next-generation vector and promoter platform;
● Changes in the fair value of the contingent consideration related to our acquisition of InoCard (up to September
30, 2018) as well as the impairment of in process research and development acquired in the three-month period
ended September 30, 2018;

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

maintenance of facilities, insurance, and other supplies; and

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

product candidates, which include:

● Etranacogene dezaparvovec (hemophilia B). We have incurred costs related to the research, development, and
production of etranacogene dezaparvovec for the treatment of hemophilia B. In June 2018, we initiated a pivotal
study. We completed enrollment of the lead-in phase of the pivotal study in September 2019 and dosed a total of
54 patients between January 2019 and March 2020. Following the completion of dosing we initiated activities
related to the preparation of marketing authorization applications in the U.S. and EU, as well as other related
undertakings. In September 2018, we completed patient dosing in our Phase IIb dose-confirmation study;

● 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;

● Preclinical  research  programs.  We  incur  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  incur  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 judgement 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.

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A change in the outcome of any of these variables with respect to our product candidates that we may develop,
including as a result of the COVID-19 pandemic, 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,  2020  were  $122.4  million,  compared  to
$94.7  million  and  $74.8  million  for  the  years  ended  December  31,  2019  and  2018,  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.

Etranacogene dezaparvovec (AMT-060/061)
Huntington's disease (AMT-130)
Programs in preclinical development and platform related
expenses
Total direct research and development expenses

Employee and contractor-related expenses
Share-based compensation expense
Facility expenses
Disposables
Other expenses
Termination benefits
Changes in fair value of contingent consideration
Impairment loss in process research and development
asset
Total other research and development expenses

2020

2019

2020 vs 2019

Year ended December 31, 
2018
(in thousands)
$

$

 8,677
 5,862

 4,605
 2,779

$  21,458
 6,905

$  16,853
 4,126

 6,518
$  34,881

 5,710
$  26,689

 2,491
$  17,030

$

 808
 8,192

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

 34,030
 8,094
 15,181
 8,765
 1,978
 —
 —

 28,948
 3,968
 12,961
 9,461
 646
 96
 (3,800)

 7,664
 3,901
 2,209
 1,438
 4,259
 —
 —

2019 vs 2018

$

$

 8,176
 (1,736)

 3,219
 9,659

 5,082
 4,126
 2,220
 (696)
 1,332
 (96)
 3,800

 —
$  87,519

 —
$  68,048

 5,499
$  57,779

 —
$  19,471

 (5,499)
$  10,269

Total research and development expenses

$  122,400

$  94,737

$  74,809

$  27,663

$  19,928

Direct research and development expenses

Hemophilia B (AMT-060/061)

In the year ended December 31, 2020, the external costs for our hemophilia B program were primarily related to
the  execution  of  our  Phase  III  clinical  trial  and  the  preparations  related  to  submissions  of  marketing  authorization
applications in the U.S. and EU. We enrolled patients into a six-month lead in phase between January 2018 and September
2019  and  dosed  a  total  of  54  patients  between  January  2019  and  March  2020.  Our  expenses  related  to  etranacogene
dezaparvovec were largely unaffected by the COVID-19 pandemic as we completed enrollment prior to the lockdowns in
those countries that we enroll patients. We implemented additional measures to minimize any risk, disruption, or delay on
follow-up visits, and as of September 2020, we completed almost all follow-up visits according to our initial plan.

In  addition,  we  continue  to  incur  costs  for  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. In the years ended December 31, 2018 and 2019, our external costs for our
hemophilia B program were primarily related to the planning and execution of our Phase III and Phase IIb clinical trials.

Following the completion of patient enrollment into our HOPE-B trial we also started incurring costs related to

preparation of a BLA and MAA and for commercialization of etranacogene dezaparvovec.

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Huntington disease (AMT-130)

In  the  year  ended  December  31,  2020,  our  external  costs  for  the  development  of  Huntington’s  disease  were
primarily related to the execution of our Phase I/II clinical trial as well as expenses related to the procedures of the first two
patients  in  June  2020.  In  the  year  ended  December  31,  2019,  our  external  costs  for  the  development  of  Huntington’s
disease were primarily related to the preparation of our Phase I/II clinical trial. During 2018, the majority of costs were
related to the planning and execution of a GLP toxicology study. In addition, we incurred cost related to the filing of our
IND in late 2018 and early 2019.

Preclinical programs & platform development

In  the  year  ended  December  31,  2020,  we  incurred  $6.5  million  of  costs  related  to  related  to  our  preclinical
activities for product candidates including Hemophilia A (AMT-180), SCA3 (AMT-150) and Fabry disease (AMT-190), as
well  as  various  other  research  programs  and  technology  innovation  projects  compared  to  $5.7  million  in  2019  and  $2.5
million in 2018.

Other research & development expenses

● We  incurred  $41.7  million  in  employee  and  contractor  expenses  in  the  year  ended  December  31,  2020
compared to $34.0 million in 2019 and $28.9 million in 2018. Our cost increased in 2020 by $7.7 million
compared  to  2019  as  a  result  of  the  recruitment  of  personnel  to  support  the  preclinical  and  clinical
development  of  our  product  candidates.  For  the  same  reason  our  costs  increased  by  $5.1  million  in  2019
compared to 2018;

● We  incurred  $12.0  million  in  share-based  compensation  expenses  in  the  year  ended  December  31,  2020
compared to $8.1 million in 2019 and $4.0 million in 2018. The increase in 2020 compared to 2019 of $3.9
million  was  primarily  driven  by  grants  to  newly  recruited  personnel  as  well  as  share-based  compensation
expenses recorded in relation to the termination of one of our executives. The increase in 2019 compared to
2018 of $4.1 million was driven primarily by the appreciation of our share price and increase in number of
grants;

● We incurred $17.4 million in operating expenses and depreciation expenses related to our rented facilities in
the  year  ended  December  31,  2020  compared  to  $15.2  million  in  2019  and  $13.0  million  in  2018.  The
increase in 2020 compared to 2019 of $2.2 million primarily relates to extending and expanding (as of June
2019)  the  lease  of  our  Lexington  facility.  The  increase  in  2019  compared  to  2018  of  $2.2  million  also
primarily relates to extending and expanding (as of June 2019) the lease of our Lexington facility;

● We incurred $10.2 million in costs in the year ended December 31, 2020 compared to $8.8 million in the year
ended December 31, 2019 and $9.5 million in the year ended December 31, 2018 related to miscellaneous
other costs we incur as a result of expanding our organization;

● We incurred $6.2 million in other expenses in the year ended December 31, 2020 compared to $2.0 million in
2019 and $0.6 million in 2018. The increase in 2020 compared to 2019 of $4.2 million primarily relates to
license  payments  of  $3.4  million  that  we  determined  during  2020  to  have  no  alternative  future  use.  The
increase in 2019 compared to 2018 of $1.4 million primarily relates to extending and expanding (as of June
2019) the lease of our Lexington facility;

● We recorded no results related to a change in the fair value of the contingent consideration owed to the sellers
of the InoCard business in the years ended December 31, 2020 and 2019 compared to a gain of $3.8 million
in 2018; and

● We  incurred  no  impairment  losses  in  the  years  ended  December  31,  2020  and  2019  compared  to  an
impairment loss of $5.4 million on the in-process research and development asset acquired in the InoCard
business combination in 2018.

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Selling, general and administrative expenses

Our  general  and  administrative  expenses  consist  principally  of  employee,  office,  consulting,  legal  and  other
professional  and  administrative  expenses.  We  incur  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.

Selling, general and administrative expenses for the year ended December 31, 2020 were $42.6 million, compared

to $33.5 million and $25.3 million for the years ended December 31, 2019 and 2018, respectively.

● We incurred $13.6 million in personnel and consulting expenses in 2020 compared to $10.5 million in 2019
and $8.9 million in 2018. The increase of $3.1 million in 2020 compared to 2019 and the increase of $1.6
million in 2019 compared to 2018 was primarily driven by an increase in personnel and consulting related
expenses to support our growth;

● We incurred $9.8 million of share-based compensation expenses in 2020 compared to $9.4 million in 2019
and $6.7 million in 2018. The increase in 2020 compared to 2019 of $0.4 million was primarily driven by
newly recruited personnel and the increase in 2019 compared to 2018 of $2.7 million was primarily driven by
the appreciation of our share price and increase in number of grants;

● We incurred $8.0 million in professional fees in 2020 compared to $6.0 million in 2019 and $4.2 million in
2018.  We  regularly  incur  accounting,  audit  and  legal  fees  associated  with  operating  as  a  public  company.
Additionally, in the year ended December 31, 2020, we incurred professional fees in relation to our licensing
transaction with CSL Behring.

Other items, net

In  2020,  we  recognized  $1.9  million  in  income  related  to  payments  received  from  European  authorities  to
subsidize our research and development efforts in the Netherlands compared to $0.7 million in 2019 and $1.0 million in
2018.

In January 2018, we began recognizing other 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

We recognize interest income associated with our cash and cash equivalents.

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.

We  issued  warrants  to  Hercules  in  2013  and  to  BMS  in  2015.  We  recognize  changes  in  the  fair  value  of  these
warrants within other non-operating income / (expense).  Following the termination of the BMS warrants on December 1,
2020, we no longer recognize changes in the fair value of these warrants within other non-operating (expense) / income. As
of the same date, we recognized a derivative financial liability related to the CoC-payment. Following the exercise of the
warrants  by  Hercules  in  February  2019  we  no  longer  recognize  changes  in  the  fair  value  of  these  warrants  within  other
non-operating (expense) / income.

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Our non-operating items, net, for the years ended December 31, 2020, 2019 and 2018 were as follows:

Year ended December 31, 

2020

2019

2018

2020 vs 2019

2019 vs 2018

(in thousands)

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

    $

 938     $  3,547     $  2,729     $  (2,609)    $

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

 (3,810)
 (268)
 (2,530)
$ (3,061)

 (2,160)
 4,382
 208
$  5,159

 (15)
 (13,345)
 3,013
$  (12,956)

 818
 (1,650)
 (4,650)
 (2,738)
$  (8,220)

We recognized $0.9 million interest income in 2020, $3.5 million in 2019 and $2.7 million in 2018. Our interest
income in 2020 decreased by $2.6 million compared to 2019 due to a reduction in market interest rates in 2020 as well as a
reduction in cash and cash equivalents. Our interest income in 2019 increased by $0.8 million as a result of an increase in
our cash and cash equivalents through our September 2019 $242.7 million public follow-on offering.

We recognized $3.8 million interest expense in 2020, $3.8 million in 2019 and $2.2 million in 2018. Our interest
income in 2020 was unchanged compared to 2019 as our outstanding debt remained unchanged. Our interest expense in
2019 increased by $1.6 million as we increased our outstanding debt from $20.0 million to $35.0 million on December 6,
2018.

In 2020, we recognized a net foreign currency loss of $13.6 million related to our borrowings from Hercules and
our  cash  and  cash  equivalents  as  well  as  loans  between  entities  within  the  uniQure  group,  compared  to  a  net  loss  of
$0.3 million in 2019 and a net gain of $4.4 million in 2018.

In 2020, we recognized a $0.5 million net gain related to fair value changes of derivative financial instruments,
compared to a net loss of $2.5 million in 2019 and a gain of $0.2 million in 2018. The changes in 2020 compared to 2019
result from a $3.1 million gain that we recognized related to fair value changes of the BMS warrants (compared to $2.5
million  loss  in  2019),  which  includes  an  $0.8  million  gain  that  we  recognized  related  to  the  termination  of  the  BMS
warrants in December 2020, and a loss of $2.6 million to recognize the derivative financial liability for the CoC-payment
on December 1, 2020.

Income tax

We recognized $16.4 million of deferred tax income in 2020, $0.0 million in 2019 and income tax expense of $0.2
million in 2018. 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. We did not record changes in valuation allowances in 2019 and 2018.

Financial Position, Liquidity and Capital Resources

As of December 31, 2020, we had cash, cash equivalents and restricted cash of $247.7 million. We believe our
cash and cash equivalents as of December 31, 2020, combined with the $100.0 million 2021 Amended Facility will enable
us to fund our operating expenses, including our debt repayment obligations, as they become due and capital expenditure
requirements into the second half of 2022. In the event that we receive the $450.0 million payment due on the closing of
the CSL Behring Agreement, we expect that our cash and cash equivalents will be sufficient to fund operations into the
second half of 2024 (assuming a full repayment of funds borrowed from Hercules under our term loan facility by 2023).
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 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

99

2020

2018

Year ended December 31, 
2019
(in thousands)
$  237,342
 (98,684)
 (6,647)
 248,821
 (106)
$  380,726

$  161,851
 (76,037)
 (4,245)
 157,961
 (2,187)
$  237,342

$  380,726
 (134,828)
 (9,484)
 7,444
 3,822
$  247,680

    
    
    
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We have incurred losses and cumulative negative cash flows from operations since our business was founded by
our  predecessor  entity  AMT  in  1998.  We  had  a  net  loss  of  $125.0  million  in  2020,  $124.2  million  in  2019,  and
$83.3 million in 2018. As of December 31, 2020, we had an accumulated deficit of $784.7 million.

Sources of liquidity

From our first institutional venture capital financing in 2006 through 2019, we funded our operations primarily
through private placements and public offerings of equity securities, convertible, and other debt securities and to a lesser
extent upfront, target designation or similar payments from our collaboration partners.

On  September  10,  2019,  we  completed  a  follow-on  public  offering  of  4,891,305  ordinary  shares  at  a  public
offering price of $46.00 per ordinary share, and on September 13, 2019, we completed the sale of an additional 733,695
ordinary shares at a public offering price of $46.00 per ordinary share pursuant to the exercise by the underwriters of the
option to purchase additional ordinary shares, resulting in total gross proceeds to us of $258.8 million. The net proceeds
from  this  offering  were  $242.7  million,  after  deducting  underwriting  discounts  and  commissions  and  other  offering
expenses  payable  by  us.  We  deducted  $0.6  million  of  expenses  incurred  related  to  this  offering  from  additional  paid-in
capital  in  the  accompanying  consolidated  balance  sheets  and  reflected  this  within  the  proceeds  from  public  offering  of
shares, net of issuance costs within the cash flows from financing activities.

On  December  6,  2018,  we  signed  an  amendment  to  the  Second  Amended  and  Restated  Loan  and  Security
Agreement  (the  “2018  Amended  Facility”)  with  Hercules  that  both  refinanced  our  then-existing  $20.0  million  credit
facility  and  provided  us  with  an  additional  unconditional  commitment  of  $15.0  million  as  well  as  a  conditional
commitment of $15.0 million that expired on June 30, 2020. At signing, we drew down an additional $15.0 million, for a
total outstanding amount of $35.0 million.

The  2018  Amended  Facility  extended  the  loan’s  maturity  date  until  June  1,  2023.  The  interest-only  period  was
initially  extended  from  November  2018  to  January  1,  2021.  The  interest-only  period  was  further  extended  to  January  1,
2022 as a result of raising more than $90.0 million in equity financing in September 2019. As of December 31, 2020, $35.0
million was outstanding under the 2018 Amended Facility (December 31, 2019: $35.0 million). We are required to repay
the  facility  in  equal  monthly  installments  of  principal  and  interest  between  the  end  of  the  interest-only  period  and  the
maturity date. The variable interest rate is equal to the greater of (i) 8.85% or (ii) 8.85% plus the prime rate less 5.50%.
Under the 2018 Amended Facility, we paid a facility fee equal to 0.50% of the $35,000,000 loan outstanding and will owe
a back-end fee of 4.95% of the outstanding debt.

On January 29, 2021 we and Hercules entered into the 2021 Amended Facility. Pursuant to the 2021 Amended
Facility, Hercules agreed to the 2021 Term Loan, increasing the aggregate principal amount of the term loan facility from
$35.0 million to up to $135.0 million. On January 29, 2021 we drew down $35.0 million of the 2021 Term Loan. We may
draw down the remaining $65.0 million under the 2021 Term Loan in a series of one or more advances of not less than
$20.0  million  each  until  December  15,  2021.  Advances  under  the  2021  Term  Loan  bear  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  and  all  accrued  but
unpaid interest on advances under the 2021 Term Loan is due on June 1, 2023, which date may be extended by us by up to
two  twelve-month  periods.  Advances  under  the  2021  Term  Loan  may  not  be  prepaid  until  six-months  after  the  Closing
Date, following which we may prepay all such advances without charge.

On May 7, 2018, we completed a follow-on public offering of 5,175,000 ordinary shares at a public offering price
of $28.50 per ordinary share, resulting in gross proceeds to us of $147.5 million. The net proceeds from this offering were
$138.4  million,  after  deducting  underwriting  discounts  and  commissions  and  other  offering  expenses  payable  by  us.  We
deducted  $0.2  million  of  expenses  incurred  related  to  this  offering  from  additional  paid-in  capital  in  the  accompanying
consolidated balance sheet and reflected this within the proceeds from public offering of shares, net of issuance costs with
the cash flows from financing activities.

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The $450.0 million upfront payment we expect to receive on the closing of the CSL Behring Agreement would
fund operations into the second half of 2024 (assuming a full repayment of funds borrowed from Hercules under our term
loan facility by 2023). The closing of the transaction is expected to materially impact our profitability and cash flows. We
expect  to  generate  positive  cash  flows  in  the  period  of  closing  and  to  recognize  material  revenue  related  to  the  CSL
Behring Agreement. However, we expect to continue to incur losses and to generate negative cash flows beyond the fiscal
year in which we close the transaction. 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  are  subject  to  the  same  covenants  under  our  2018  Amended  Facility  and  2021  Amended  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  2018  Amended
Facility and 2021 Amended Facility may limit our ability to obtain debt financing. 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.

Net Cash used in operating activities

Cash flows from operating activities
Net loss
Adjustments to reconcile net loss to net cash used in operating activities:

Depreciation, amortization, and impairment losses
Share-based compensation expense
Change in fair value of derivative financial instruments and contingent
consideration
Unrealized foreign exchange losses / (gains)
Deferred tax (income) / expense
Change in lease incentives
Change in deferred revenue

Changes in operating assets and liabilities:

Accounts receivable and accrued income, prepaid expenses, and other
current assets
Accounts payable
Accrued expenses, other liabilities, and operating leases

Net cash used in operating activities

2020

Year ended December 31, 
2019
(in thousands)

2018

$ (125,024)

$ (124,201)

$ (83,304)

 10,648
 21,831

 (483)
 14,730
 (16,419)
 -
 (33,642)

 6,669
 17,533

 2,530
 891
 -
 -
 (4,999)

 12,415
 10,708

 (4,054)
 (5,502)
 231
 (330)
 (8,462)

 (6,967)
 (2,701)
 3,199
$ (134,828)

 (4,769)
 1,652
 6,010
$  (98,684)

 1,578
 1,065
 (382)
$ (76,037)

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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 operating activities was $98.7 million for the annual period ended December 31, 2019, and
consisted of a net loss of $124.2 million adjusted for non-cash items, including depreciation and amortization expense of
$6.7 million, share-based compensation expense of $17.5 million, fair value loss of derivative financial instruments of $2.5
million, unrealized foreign exchange loss of $0.9 million, and a decrease in unamortized deferred revenue of $5.0 million.
Net cash used in operating activities also included changes in operating assets and liabilities of $2.9 million. These changes
primarily related to a net increase in accounts receivable and accrued income, prepaid expenses, and other current assets of
$4.8 million and a net increase in accounts payable, accrued expenses, other liabilities, and operating leases of $7.7 million
primarily related to our clinical trials and facilities.

Net cash used in operating activities was $76.0 million for the annual period ended December 31, 2018, and
consisted of a net loss of $83.3 million adjusted for non-cash items, including depreciation and amortization expense of
$12.4 million, share-based compensation expense of $10.7 million, fair value gain of derivative financial instruments and
contingent consideration of $4.1 million, unrealized foreign exchange loss of $5.5 million, deferred tax of $0.2 million, an
increase in lease incentives of $0.3 million, and a decrease in unamortized deferred revenue of $8.5 million. Net cash used
in operating activities also included changes in operating assets and liabilities of $2.3 million net.

Net cash used in investing activities

In  2020,  we  used  $9.5  million  in  our  investing  activities  compared  to  $6.6  million  in  2019  and  $4.2  million  in

2018.

Build out of Lexington site
Build out of Amsterdam site
Acquisition of licenses, patents and other rights
Total investments

2018

2020

Year ended December 31, 
2019
(in thousands)
$  (2,737) $  (4,164) $  (1,596)
 (1,487)
 (788)
 (1,861)
 (996)
$  (9,484) $  (6,647) $  (4,245)

 (4,534)
 (2,213)

In 2020, we invested $2.7 million in our facility in Lexington compared to $4.2 million in 2019 and $1.6 million
in 2018. Our investments in 2019 primarily relate to improvements we made to the additional space rented from June 1,
2019.

In 2020, we invested $4.5 million in our facility in Amsterdam compared to $1.5 million in 2019 and $0.8 million
in 2018. Our investments in 2020 primarily relate to the construction of additional laboratories to support the expansion of
our preclinical activities.

Net cash generated from financing activities

We received net proceeds of $242.7 million associated with our public follow-on offering in September 2019 and

$138.4 million associated with our public follow-on offering in May 2018.

We  received  net  proceeds  of  $0.5  million  associated  with  the  exercise  of  the  Hercules  warrants  by  Hercules  in

February 2019.

We received net proceeds of $14.8 million associated with the 2018 Amended Facility in December 2018.

In 2020, we received $7.4 million from the exercise of options to purchase ordinary shares issued in accordance

with our share incentive plans, compared to $5.6 million in 2019 and $4.8 million in 2018.

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Funding requirements

We  believe  our  cash  and  cash  equivalents  as  of  December  31,  2020,  combined  with  the  $100.0  million  2021
Amended Facility, will enable us to fund our operating expenses, including our debt repayment obligations, as they become
due  and  capital  expenditure  requirements  into  the  second  half  of  2022.  In  the  event  that  we  receive  the  $450.0  million
payment  due  on  the  closing  of  the  CSL  Behring  Agreement,  we  expect  that  our  cash  and  cash  equivalents  would  be
sufficient  to  fund  operations  into  the  second  half  of  2024  (assuming  a  full  repayment  of  funds  borrowed  from  Hercules
under  our  term  loan  facility  by  2023).  Our  future  capital  requirements  will  depend  on  many  factors,  including  but  not
limited to:

● the closing of the transaction contemplated by the CSL Behring Agreement as well as achieving the milestones

and royalties as defined therein;

● the  cost  and  timing  of  future  commercialization  activities,  including  product  manufacturing,  marketing,  sales,

and distribution of any of our product candidates for which we receive marketing approval in the future;

● the amount and timing of revenue, if any, we receive from commercial sales of any product candidates for which

we, or our collaboration partner, receives marketing approval in the future;

● the scope, timing, results, and costs of our current and planned clinical trials, including those for etranacogene

dezaparvovec in hemophilia B and AMT-130 in Huntington’s disease;

● 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  repayments  of  the  principal  and  other  fees  associated  with  our  venture  debt  loan  with  Hercules,  which

following the January 29, 2021 amendment will be due in June 2023;

● the extent to which we acquire or in-license other businesses, products, product candidates or technologies;
● the costs associated with maintaining quality compliance and optimizing our manufacturing processes, including

the operating costs associated with our Lexington, Massachusetts manufacturing facility;

● the costs associated with increasing the scale and capacity of our manufacturing capabilities; and
● the  costs  associated  in  preparing  for  the  BLA  submission  of  etranacogene  dezaparvovec,  including  process
validation,  inspection  readiness  and  other  regulatory  expenses  in  the  event  that  our  collaboration  and  license
agreement with CSL Behring does not close.

Contractual obligations and commitments

The  table  below  sets  forth  our  contractual  obligations  and  commercial  commitments  as  of  December  31,  2020,
that  are  expected  to  have  an  impact  on  liquidity  and  cash  flows  in  future  periods.  The  obligations  to  repay  debt  do  not
reflect the extension of the interest-only period that we and Hercules agreed upon on January 29, 2021.

Less than 1
year

Between 1
and 3 years

Between 3
and 5 years
(in thousands)

Over 5 years

Total

Debt obligations (including $7.4
million interest payments)
Operating lease obligations
Total

$

$

 3,141
 5,637
 8,778

$

$

 39,271
 11,566
 50,837

$

$

 — $

 12,977
 12,977

$

 — $

 29,192
 29,192

$

 42,412
 59,372
 101,784

103

  
  
  
  
  
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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  Biologics
License Application, approval by the FDA or product launch). We have not included these commitments on our balance
sheet or in the table above because the achievement and timing of these milestones is not fixed and determinable. We will
also have obligations to make future payments that become due and payable if we collect the upfront payment or milestone
payments from CSL Behring. We have not included these commitments on our balance sheet or in the table above because
these payments only become due and payable upon the closing of the transaction with CSL Behring.

We enter into contracts in the normal course of business with CROs for preclinical research studies and clinical
trials,  research  supplies  and  other  services  and  products  for  operating  purposes.  These  contracts  generally  provide  for
termination on notice, and therefore are cancelable contracts and not included in the table of contractual obligations and
commitments.

Off-Balance Sheet Arrangements

As  of  December  31,  2020,  we  did  not  have  any  off-balance  sheet  arrangement  as  defined  in  Item  303(a)(4)  of

Regulation S-K.

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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. As our U.S. operating entity primarily conducts its operations in U.S.
dollars, its exposure to changes in foreign currency is insignificant.

Our Dutch entities hold significant amounts of U.S. dollars in cash and cash equivalents, 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. On December 31, 2020, if the
euro had weakened 10% against the U.S. dollar with all other variables held constant, pre-tax earnings for the year would
have been $13.0 million higher (December 31, 2019: $24.7 million higher), and other comprehensive income would have
been $5.2 million higher (December 31, 2019: $31.9 million lower). Conversely, if the euro had strengthened 10% against
the U.S. dollar with all other variables held constant, pre-tax earnings for the year would have been $13.0 million lower
(December  31,  2019:  $24.7  million  lower),  and  other  comprehensive  income  would  have  been  $8.3  million  lower
(December 31, 2019: $31.8 million higher).

We  strive  to  mitigate  foreign  exchange  risk  through  holding  sufficient  funds  in  euro  and  dollars  to  finance

budgeted cash flows for the next year.

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.  In  June  2013,  we  entered  into  the  Hercules
Agreement,  which  was  last  amended  and  restated  in  December  2018,  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, 2020, the loan bore an interest rate of 8.85%.

As  of  December  31,  2020,  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 $0.3 million (2019: $0.3 million; 2018: $0.2 million) lower.

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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.

We deposited funds as security to our landlords related to our facility in Lexington, Massachusetts, and 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. Cash, cash equivalents and restricted cash were placed at the following banks:

As of December 31,

2020

2019

Amount

Credit rating

Amount

Credit rating

Bank
Bank of America
Rabobank
Citizens Bank
Total

$

$

 73,922  
 173,758

 —  

 247,680

(in thousands)

Aa2
Aa3
-

$

$

 315,720  
 63,262

 1,744  

 380,726

Aa2
Aa3
A1

Ratings are by Moody’s.

Liquidity Risk

We  believe  our  cash  and  cash  equivalents  as  of  December  31,  2020,  combined  with  the  $100.0  million  2021
Amended Facility will enable us to fund our operating expenses, including our debt repayment obligations, as they become
due  and  capital  expenditure  requirements  into  the  second  half  of  2022.  In  the  event  that  we  receive  the  $450.0  million
payment due on the closing of the CSL Behring Agreement, we expect that our cash and cash equivalents will be sufficient
to fund operations into the second half of 2024 (assuming a full repayment of funds borrowed from Hercules under our
term loan facility by 2023). We manage liquidity through a rolling forecast of our liquidity reserve based on expected cash
flows and raise cash if needed, either through the issuance of shares or credit facilities.

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.

At December 31, 2019
Long-term debt
Accounts payable, accrued expenses and
other current liabilities
Derivative financial instruments
Total
At December 31, 2020
Long-term debt
Accounts payable, accrued expenses and
other current liabilities
Derivative financial instruments
Total

$

$

$

$

Undefined

Less than
1 year

Between
1 - 3 years
(in thousands)

Between
3 - 5 years

Over 5 years

 — $

 4,119

$

 28,143

$

 14,269

$

—  

 18,138

 3,075
 3,075

$

 —  
$

 22,257

 —  
 —  
$

 28,143

 —  
 —  
$

 14,269

 — $

 3,141

$

 39,271

$

 — $

 —  

 21,810

 2,645
 2,645

$

 —  
$

 24,951

 —  
 —  
$

 39,271

 —  
 —  
 — $

 —

 —
 —
 —

 —

 —
 —
 —

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Due to uncertainty of timing of exercise of warrants by BMS, the amount owed to derivative financial instruments
was classified as undefined in time as of December 31, 2019. We derecognized the warrants on December 1, 2020 when
these  were  terminated  by  the  amended  BMS  CLA.  On  December  1,  2020  we  recognized  a  derivative  financial  liability
related to the CoC-payment. Generally, the CoC-payment would be 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 has no contractual maturity date.

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.

Selected quarterly financial data (unaudited)

You should read the following tables presenting our unaudited quarterly results of operations in conjunction with
the consolidated financial statements and related notes contained elsewhere in this Annual Report on Form 10-K. We have
prepared  this  unaudited  information  on  the  same  basis  as  our  audited  consolidated  financial  statements.  Our  quarterly
operating results have fluctuated in the past and may continue to do so in the future as a result of several factors, including,
but not limited to, the timing and nature of research and development activities.

Summarized quarterly information for the two fiscal years ended December 31, 2020 and 2019, respectively, is as

follows:

For the Quarter Ended
(unaudited)

December 31,
2020

September 30,
2020

June 30,
2020

March 31,
2020

(in thousands, except per share data)

Revenue
Net loss
Basic net loss per ordinary share

    $  34,086     $

 1,789     $  1,535     $

 (699)
 (0.02)

 (53,775)
 (1.21)

   (42,551)
 (0.96)
$

$

$

 104
   (27,999)
 (0.63)
$

Note: basic net loss per ordinary share for the four quarters in 2020 does not equal the annual reported amount due

to rounding.

For the Quarter Ended
(unaudited)

December 31,
2019

September 30,
2019

June 30,
2019

March 31,
2019

(in thousands, except per share data)

Revenue
Net loss
Basic net loss per ordinary share

    $

 2,625     $

 (41,426)
 (0.95)

$

$

 1,046     $  2,474     $  1,136
   (27,772)
 (0.74)
$

   (31,399)
 (0.83)
$

 (23,604)
 (0.58)

Note: basic net loss per ordinary share for the four quarters in 2019 does not equal the annual reported amount due

to rounding.

Item 9.  Changes in and Disagreements With Accountants on Accounting and Financial Disclosure

None.

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Item 9A.  Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our  management,  with  the  participation  of  our  chief  executive  officer  (“CEO”),  who  also  serves  as  our  chief
financial officer, evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and
15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) as of December 31, 2020. Based
on such evaluation, our CEO has concluded that as of December 31, 2020, 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,  2020.  This
assessment  was  performed  under  the  direction  and  supervision  of  our  CEO  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, 2020, 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, 2020. Their report is filed within this Annual Report on Form 10-K.

Inherent Limitations of Internal Controls

Our management, including our CEO, 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.

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Changes in internal control over financial reporting

During the fourth quarter of 2020, 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.  We  have  not  experienced  any  material  impact  to  our  internal  controls  over
financial reporting even though a large group of our employees are working remotely due to the COVID-19 pandemic. We
are continually monitoring and assessing the impact COVID-19 has on the operating effectiveness of our internal controls.  

Item 9B.  Other Information

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 2021 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 2021 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 2021 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  2021  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 2021 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.
Report of Independent Registered Public Accounting Firm – PricewaterhouseCoopers Accountants N.V.
Consolidated Balance Sheets as of December 31, 2020 and 2019
Consolidated Statements of Operations and Comprehensive Loss for the Years Ended December 31, 2020, 2019

and 2018

Consolidated Statements of Shareholders’ Equity for the Years Ended December 31, 2020, 2019 and 2018
Consolidated Statements of Cash Flows for the Years Ended December 31, 2020, 2019 and 2018
Notes to Consolidated Financial Statements for the Years Ended December 31, 2020, 2019 and 2018

Page

113
116
117

118
119
120
121

(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, 2020, 2019 AND 2018

Report of Independent Registered Public Accounting Firm – KPMG Accountants N.V.
Report of Independent Registered Public Accounting Firm – PricewaterhouseCoopers Accountants N.V.
Consolidated Balance Sheets as of December 31, 2020 and 2019
Consolidated Statements of Operations and Comprehensive Loss for the Years Ended December 31, 2020, 2019

and 2018

Consolidated Statements of Shareholders’ Equity for the Years Ended December 31, 2020, 2019 and 2018
Consolidated Statements of Cash Flows for the Years Ended December 31, 2020, 2019 and 2018
Notes to Consolidated Financial Statements

Page

113
116
117

118
119
120
121

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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, 2020 and 2019, the related consolidated statements of operations and comprehensive loss,
shareholders’ equity, and cash flows for the years then ended, 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, 2020, 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, 2020 and 2019, and the results of its operations and its cash flows
for the years then ended, 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, 2020
based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring
Organizations of the Treadway Commission.

Change in Accounting Principle

As discussed in Note 6, to the consolidated financial statements, the Company changed its method of accounting

for leases as of January 1, 2019 due to the adoption of ASC 842, Leases.

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

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated
financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to
accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially
challenging, subjective, or complex judgments. The communication of a critical audit matter does not alter in any way our
opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit
matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Assessment of the satisfaction of the license revenue performance obligation within the BMS collaboration and license
agreement

As discussed in Notes 2.3.18 and 3 to the consolidated financial statements, uniQure biopharma B.V., a subsidiary

of uniQure N.V. (the Company) entered into an amended collaboration and license agreement (CLA) with Bristol-Myers
Squibb Company (BMS) on December 1, 2020. Based on the terms of the amended agreement, the Company determined
that it materially satisfied its performance obligation in relation to the license revenue as of December 1, 2020, and as such
recorded the residual balance of unrecognized license revenue of $27.8 million in profit and loss as license revenues from
related party.

We identified the assessment of the satisfaction of the license revenue performance obligation as a critical audit
matter. A high degree of subjective, complex auditor judgement was required in assessing if the remaining rights of the
license revenue performance obligation were materially satisfied as of December 1, 2020.

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The following are the primary procedures we performed to address this critical audit matter:

- We evaluated the design and tested the operating effectiveness of an internal control related to the evaluation of

the performance obligation and when it was materially satisfied.

- In order to assess that the remaining rights of the license revenue performance obligation were materially

satisfied, we examined the amended collaboration and license agreement between the Company and BMS.

- In order to assess the satisfaction of the performance obligation, we examined minutes of joint steering committee
meetings between the Company and BMS, evaluated the services delivered and performed interviews with the Company’s
finance and business operations department.

/s/ KPMG Accountants N.V.

We have served as the Company’s auditor since 2019.

Amstelveen, The Netherlands
March 1, 2021

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Report of Independent Registered Public Accounting Firm

To the Management Board and Shareholders of uniQure N.V.:

Opinion on the Financial Statements

We have audited the consolidated statements of operations and comprehensive loss, of shareholders’ equity and of 

cash flows of uniQure N.V. and its subsidiaries (the “Company”) for the year ended December 31, 2018, including the 
related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial 
statements present fairly, in all material respects, the results of operations and cash flows of the Company for the year 
ended December 31, 2018 in conformity with accounting principles generally accepted in the United States of America.    

Basis for Opinion

These consolidated financial statements are the responsibility of the Company's management. Our responsibility is 
to express an opinion on the Company’s consolidated financial statements based on our audit. 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 audit of these consolidated financial statements in accordance with the standards of the PCAOB.
Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated
financial statements are free of material misstatement, whether due to error or fraud.

Our audit 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
audit 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. We believe that our audit provides a reasonable
basis for our opinion.

/s/ R.M.N. Admiraal RA

PricewaterhouseCoopers Accountants N.V.
Amsterdam, the Netherlands

February 28, 2019

We served as the Company's auditor from 2006 to 2019.

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uniQure N.V.

CONSOLIDATED BALANCE SHEETS

December 31, 
2020

December 31, 
2019

(in thousands, except share and per share amounts)

Current assets
Cash and cash equivalents
Accounts receivables
Accounts receivable from related party
Prepaid expenses
Other current assets
Total current assets
Non-current assets
Property, plant and equipment, net
Operating lease right-of-use assets
Intangible assets, net
Goodwill
Restricted cash
Deferred tax asset
Total non-current assets
Total assets
Current liabilities
Accounts payable
Accrued expenses and other current liabilities
Current portion of operating lease liabilities
Current portion of deferred revenue
Total current liabilities
Non-current liabilities
Long-term debt
Operating lease liabilities, net of current portion
Deferred revenue, net of current portion
Derivative financial instruments related party
Other non-current liabilities
Total non-current liabilities
Total liabilities
Commitments and contingencies
Shareholders' equity
Ordinary shares, €0.05 par value: 60,000,000 shares authorized at
December 31, 2020 and December 31, 2019 and 44,777,799 and
43,711,954 ordinary shares issued and outstanding at December 31, 2020
and December 31, 2019, respectively
Additional paid-in-capital
Accumulated other comprehensive income / (loss)
Accumulated deficit
Total shareholders' equity
Total liabilities and shareholders' equity

$

$

$

$

$

$

$

244,932
6,618
—
4,337
3,024
258,911

32,328
26,086
3,361
542
2,748
16,419
81,484
340,395

3,772
18,038
5,524
—
27,334

35,617
30,403
—
—
3,136
69,156
96,490

377,793
—
947
4,718
748
384,206

28,771
26,797
5,427
496
2,933
—
64,424
448,630

5,681
12,457
5,865
7,627
31,630

36,062
31,133
23,138
3,075
534
93,942
125,572

2,711
1,016,018
9,907
(784,731)
243,905
340,395

$

2,651
986,803
(6,689)
(659,707)
323,058
448,630

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.

Year ended December 31, 
2019
(in thousands, except share and per share amounts)

2018

2020

License revenues
License revenues from related party
Collaboration revenues
Collaboration revenues from related party
Total revenues
Operating expenses:
Research and development expenses
Selling, general and administrative expenses
Total operating expenses
Other income
Other expense
Loss from operations
Interest income
Interest expense
Foreign currency (losses) / gains, net
Other non-operating gains / (losses), net
Loss before income tax income / (expense)
Income tax income / (expense)
Net loss
Other comprehensive income / (loss):
Foreign currency translation adjustments net of tax impact of nil for the
year ended December 31, 2020 (2019: nil and 2018: $(0.2) million)
Total comprehensive loss

Basic and diluted net loss per ordinary share
Weighted average shares used in computing basic and diluted net loss
per ordinary share

$

$

$

$

4,352
32,967
59
136
37,514

(122,400)
(42,580)
(164,980)
3,342
(1,302)
(125,426)
938
(3,825)
(13,613)
483
(141,443) $
16,419
(125,024) $

—
4,988
—
2,293
7,281

(94,737)
(33,544)
(128,281)
1,888
(2,028)
(121,140)
3,547
(3,810)
(268)
(2,530)
(124,201)
—
(124,201)

16,596
(108,428) $

570
(123,631)

(2.81) $

(3.11)

$

$

$

$

—
7,528
—
3,756
11,284

(74,809)
(25,305)
(100,114)
2,146
(1,548)
(88,232)
2,729
(2,160)
4,382
208
(83,073)
(231)
(83,304)

(5,261)
(88,565)

(2.34)

44,466,365

39,999,450

35,639,745

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

No. of shares        Amount       

31,339,040

$ 1,947

     (loss)/income     
(in thousands, except share data)
$
$

566,530

(3,800) $ (475,318) $

deficit

Additional
paid-in
capital

Accumulated
other

comprehensive Accumulated 

Total
shareholders’
equity

89,359

24,918
(83,304)
(5,261)
138,361
4,760

23,116
(83,304)
—
—
—

1,802
—
(5,261)
—
—

—
—

—
—

—
10,708

—

—

65
(7,259) $ (535,506) $ 179,606
(124,201)
(124,201)
—
570
242,674
—
1,273
—
5,235
—

—
570
—
—
—

—
—

—
—

—
17,533

—

—

368
(6,689) $ (659,707) $ 323,058
(125,024)
(125,024)
16,596
—
7,198
—

—
16,596
—

—
—
—
5,175,000
425,074

409,948
—

—
—
—
309
19

24
—

2,591
37,351,653
—
—
5,625,000
37,175
453,232

—
$ 2,299
—
—
311
2
25

235,692
—

14
—

9,202
43,711,954
—
—
498,678

—
$ 2,651
—
—
29

$

$

—
—
—
138,052
4,741

(24)
10,708

65
720,072
—
—
242,363
1,271
5,210

(14)
17,533

368
986,803
—
—
7,169

$

$

Balance at December 31, 2017
Cumulative effect of retroactive
implementation of ASC 606 Revenue
recognition
Loss for the period
Other comprehensive loss
Follow-on public offering
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, 2018
Loss for the period
Other comprehensive income
Follow-on public offering
Hercules warrants exercise
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, 2019
Loss for the period
Other comprehensive income
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, 2020

560,986
—

31
—

(31)
21,831

—
—

—
—

—
21,831

6,181
44,777,799

—
$ 2,711

246
$ 1,016,018

$

—
9,907

—

246
$ (784,731) $ 243,905

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
Adjustments to reconcile net loss to net cash used in operating activities:

Depreciation, amortization, and impairment losses
Share-based compensation expense
Change in fair value of derivative financial instruments and contingent
consideration
Unrealized foreign exchange losses / (gains)
Deferred tax (income) / expense
Change in lease incentives
Change in deferred revenue

Changes in operating assets and liabilities:

Accounts receivable and accrued income, prepaid expenses, and other current
assets
Accounts payable
Accrued expenses, other liabilities, and operating leases

Net cash used in operating activities
Cash flows from investing activities
Purchases of intangible assets
Purchases of property, plant, and equipment
Net cash used in investing activities
Cash flows from financing activities
Proceeds from issuance of shares related to employee stock option and purchase
plans
Proceeds from public offering of shares, net of issuance costs
Proceeds from loan increment
Proceeds from exercise of warrants
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 increase / (decrease) in accounts payables and accrued expenses and
other current liabilities related to purchases of intangible assets and property,
plant, and equipment

2020

Year ended December 31, 
2019
(in thousands)

2018

$ (125,024)

$ (124,201)

$ (83,304)

10,648
21,831

(483)
14,730
(16,419)
-
(33,642)

(6,967)
(2,701)
3,199
(134,828)

(2,213)
(7,271)
(9,484)

6,669
17,533

2,530
891
-
-
(4,999)

(4,769)
1,652
6,010
(98,684)

(996)
(5,651)
(6,647)

12,415
10,708

(4,054)
(5,502)
231
(330)
(8,462)

1,578
1,065
(382)
(76,037)

(1,861)
(2,384)
(4,245)

7,444
-
-
-
7,444
3,822
(133,046)
380,726
$ 247,680
$ 244,932
2,748
$ 247,680

5,603
242,718
-
500
248,821
(106)
143,384
237,342
$ 380,726
$ 377,793
2,933
$ 380,726

4,825
138,361
14,775
-
157,961
(2,187)
75,491
161,851
$ 237,342
$ 234,898
2,444
$ 237,342

$

$

(4,131)

$

(3,117)

$

(2,141)

630

$

313

$

(48)

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)
under  number  54385229.  The  Company’s  headquarters  are  in  Amsterdam,  the  Netherlands,  and  its  registered  office  is
located at Paasheuvelweg 25a, 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  trades  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  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,  2020  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 the treatment of the commercialization and license agreement entered into
between the Company and CSL Behring LLC (“CSL Behring Agreement”), the December 1, 2020, amendment (“amended
BMS  CLA”)  of  the  2015  collaboration  and  license  agreement  (“BMS  CLA”)  between  the  Company  and  Bristol-Myers
Squibb (“BMS”), share-based payments, valuation allowances for deferred tax assets, and accounting for operating leases
under ASC 842. 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.)  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 ($). 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
4, “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      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.

2.3.6      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.

2.3.7      Net loss per share

The Company follows the provisions of ASC 260, Earnings Per Share. In accordance with these provisions, loss
per  share  is  calculated  by  dividing  net  loss  by  the  weighted  average  number  of  ordinary  shares  outstanding  during  the
period.

Diluted  net  loss  per  share  reflects  the  dilution  that  would  occur  if  share  options  or  warrants  to  issue  ordinary
shares  were  exercised,  or  performance  or  restricted  share  units  were  distributed.  However,  potential  ordinary  shares  are
excluded if their effect is anti-dilutive. The Company currently has no dilutive securities due to the net loss position and as
such, basic and diluted net loss per share are the same for the periods presented.

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2.3.8      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. 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.

Goodwill  is  not  amortized  but  is  evaluated  for  impairment  within  the  Company’s  single  reporting  unit  on  an
annual basis, during the fourth quarter, or more frequently if an event occurs or circumstances change that would more-
likely-than-not reduce the fair value of the Company’s reporting unit below its carrying amount. The Company performs
the same quantitative analysis discussed above for long-lived assets and finite-lived intangible assets.

2.3.9    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

2.3.10    Leases

The  Company  adopted  ASC  842  using  the  modified  retrospective  approach  with  an  effective  date  as  of  the
beginning  of  the  Company’s  fiscal  year,  January  1,  2019,  to  operating  leases  that  existed  on  that  date.  Comparative
financial information related to profit and loss and cash flows for the twelve-month period ended December 31, 2018, was
not recast under the new standard, and continues to be presented under ASC 840.

The Company measured lease liabilities at the present value of the future lease payments as of January 1, 2019.
The Company used an incremental borrowing rate to discount the lease payments. The Company derived the discount rate,
adjusted  for  differences  such  as  in  the  term  and  payment  patterns,  from  the  Company’s  loan  from  Hercules  Technology
Growth Capital, Inc (“Hercules Capital”), which was refinanced immediately prior to the January 1, 2019 adoption date in
December 2018. The right-of-use asset is valued at the amount of the lease liability reduced by the remaining December
31, 2018 balance of lease incentives received. The lease liability is subsequently measured at the present value of the future
lease  payments  as  of  the  reporting  date  with  a  corresponding  adjustment  to  the  right-to-use  asset.  Absent  a  lease
modification, the Company will continue to utilize the January 1, 2019, incremental borrowing rate.

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  and  landlord
incentive payments within cash flows from operations within the Consolidated statements of cash flows.

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The financial results for the years ended December 31, 2020 and 2019 are presented in accordance with ASC 842,
while  the  financial  results  for  the  year  ended  December  31,  2018  are  presented  in  accordance  with  the  Company’s
historical accounting policy based on ASC 840.

2.3.11    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 other current assets or as other non-current assets based on the timing of the right

to consideration.

2.3.12    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.

2.3.13 Accounts receivable

Accounts receivables include amounts due from services provided to the Company’s collaboration partner as well

as unconditional rights to consideration from its collaboration partners.

2.3.14    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 are presented in accounts payable and accrued expenses.

2.3.15    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.

2.3.16    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.

Starting in 2016, the Company adopted a qualified 401(k) Plan for all employees at its Lexington facility in the
USA, which offers both a pre-tax and post-tax (Roth) component. Employees may contribute up to 50% of their pre-tax
compensation, which is subject to IRS statutory limits for 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.

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2.3.17    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. 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.

2.3.18    Revenue recognition

The  Company  primarily  generates  revenue  from  its  collaboration,  research,  and  license  agreements  with  its
collaboration  partner  BMS  for  the  development  and  commercialization  of  product  candidates.  The  Company  initially
entered into these agreements in 2015 and amended them in 2020.

On January 1, 2018, the Company adopted new revenue recognition policies in accordance with ASC 606 using
the modified retrospective approach. The Company evaluated the initial BMS CLA and determined that its performance
obligations were as follows:

● 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 3, “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.  The  Company  may  still  be  required  to
provide pre-clinical research activities or clinical and commercial manufacturing services when BMS exercises its options
for those services.

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 3, “Collaboration arrangements and concentration of
credit risk”, for a detailed discussion).

Collaboration and Manufacturing Revenue

The  Company  recognizes  Collaboration  Revenues  associated  to  optional  work  orders  it  receives  from  BMS  to
provide analytical development and process development activities that are reimbursable by BMS in accordance with the
BMS CLA as well as the amended BMS CLA.

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BMS  and  the  Company  entered  into  a  Master  Clinical  Supply  Agreement  in  April  2017  for  the  Company  to
supply gene therapy products during the clinical phase as well as into a binding term sheet to supply gene therapy products
during  the  commercial  phase  to  BMS.  In  December  2020,  BMS  and  the  Company  also  entered  into  a  Research  Supply
Agreement. Revenues from product sales will be recognized when earned. The Company will provide these services as it
receives optional work orders from BMS in relation to such services.

2.3.19    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 income from the subleasing of the Amsterdam facility while other

expense consists of expenses incurred in relation to the subleasing income.

2.3.20    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.

2.3.21    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, 2020, and 2019, the Company did not have any significant unrecognized tax
benefits.

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2.3.22 Recently Adopted Accounting Pronouncements

ASU 2018-13: Fair Value Measurement

In  August  2018,  the  FASB  issued  ASU  2018-13,  Fair  Value  Measurement  (Topic  820)  which  modifies  the
disclosure requirements on fair value measurements. ASU 2018-13 is effective for fiscal years beginning after December
15, 2019, which for the Company was January 1, 2020. The new disclosure requirements for changes in unrealized gains
and  losses  in  other  comprehensive  income  for  recurring  Level  3  measurements,  the  range  and  weighted  average  of
significant  unobservable  inputs  and  the  amended  requirements  for  the  narrative  description  of  measurement  uncertainty
should  be  applied  prospectively  for  only  the  most  recent  interim  or  annual  period  presented  in  the  initial  fiscal  year  of
adoption.  All  other  amendments  should  be  applied  retrospectively.  ASU  2018-13  did  not  have  a  material  impact  on  the
Company’s consolidated financial statements.

Recent Accounting Pronouncements Not Yet Effective

None.

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3.            Collaboration arrangements and concentration of credit risk

CSL Behring collaboration

On  June  24,  2020,  uniQure  biopharma  B.V.,  a  wholly-owned  subsidiary  of  uniQure  N.V.,  entered  into  the  CSL
Behring  Agreement  with  CSL  Behring  LLC,  (“CSL  Behring”),  pursuant  to  which  CSL  Behring  will  receive  exclusive
global rights to etranacogene dezaparvovec, the Company’s investigational gene therapy for patients with hemophilia B,
(the “Product”).

Under the terms of the CSL Behring Agreement, the Company will receive a $450.0 million upfront cash payment
upon the closing of the CSL Behring Agreement and be eligible to receive up to $1.6 billion in additional payments based
on regulatory and 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.

 Pursuant to the CSL Behring Agreement, the Company will be responsible for the completion of the HOPE-B
clinical  trial,  manufacturing  process  validation,  and  the  manufacturing  supply  of  the  Product  until  such  time  that  these
capabilities may be transferred to CSL Behring or its designated contract manufacturing organization. Concurrently with
the execution of the CSL Behring Agreement, 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. Clinical development and regulatory activities performed by the Company pursuant to the CSL Behring
Agreement will be reimbursed by CSL Behring. CSL Behring will be responsible for global regulatory submissions and
commercialization requirements for the Product.

The effectiveness of the transactions contemplated by the CSL Behring Agreement is contingent on completion of
review  under  antitrust  laws  in  the  United  States,  Australia,  and  the  United  Kingdom,  and  certain  provisions  of  the  CSL
Behring  Agreement  will  not  become  effective  until  after  we  receive  all  such  regulatory  approvals.  As  of  December  31,
2020, such regulatory approvals had not been received in all jurisdictions.

As  of  December  31,  2020,  the  Company  concluded  it  has  no  enforceable  right  to  the  upfront  payment,  the
regulatory and sale milestone payments, or the royalties (together “CSL Behring License Revenue”) that the Company may
receive in accordance with the CSL Behring Agreement, as all payments are contingent upon the successful completion of
reviews under the Hart-Scott-Rodino Antitrust Improvements Act of 1976. Therefore, the Company determined it will not
recognize any revenue in relation to the CSL Behring License Revenue, in accordance with ASC 606 during the year ended
December 31, 2020. In accordance with its existing license and other agreements, the Company is contractually required to
pay in total a low to high single digit percentage of any upfront payment to its licensors and financial advisor (“License
Fees”).  The  Company  did  not  record  any  License  Fees  in  the  year  ended  December  31,  2020,  as  the  Company  had  not
recognized the upfront payment as this date.

The Company incurred $2.1 million of expenses related to the obligations related to the CSL Behring Agreement
that had not been satisfied as of December 31, 2020. The Company capitalized these expenses as contract fulfillment costs
(presented within Other current assets). As of December 31, 2020, the Company also recognized a $2.1 million receivable
(presented within Accounts receivable) from CSL Behring for expenses for which it has a right of reimbursement as well
as a contract liability (presented within Accrued expenses and other current liabilities) for the same amount. In accordance
with ASC 606 it cannot recognize any CSL Behring License Revenue as of this date.

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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. During the
initial  research  term  of  the  BMS  CLA,  the  Company  supported  BMS  in  discovery,  non-clinical,  analytical  and  process
development  efforts  in  respect  of  the  Collaboration  Targets.  For  any  Collaboration  Targets  that  may  be  advanced,  the
Company will be responsible for manufacturing of clinical and commercial supplies. BMS reimbursed the Company for all
its research and development costs in support of the collaboration, and will lead development, regulatory and commercial
activities  for  any  Collaboration  Targets  that  may  be  advanced.  The  BMS  CLA  initially  provided  that  the  Company  and
BMS could potentially have collaborated on up to ten Collaboration Targets in total.

BMS initially designated four Collaboration Targets, including S100A1 for congestive heart failure (“AMT-126”).
In October 2018, the Company and BMS completed a heart function proof-of-concept study of AMT-126 in a pre-clinical,
diseased  animal  model.  The  data  did  not  show  a  benefit  on  heart  function  at  six  months  and,  consequently,  work  on
S100A1 was discontinued. The Company impaired a $5.4 million acquired research and development asset associated with
the program and released a contingent liability of $3.8 million related to the acquisition of the asset to income in the year
ended December 31, 2018. In April 2019, BMS designated a new cardiovascular Collaboration Target to replace S100A1.
As a result, BMS had designated a total of four Collaboration Targets as of December 31, 2019.

2020 Amendment

In February 2019, BMS requested a one-year extension of the initial research term. In April 2019, following an
assessment of the progress of the collaboration and the Company’s expanding proprietary programs, the Company notified
BMS that the Company did not intend to agree to an extension of the initial research term but rather preferred to restructure
or amend the collaboration to reduce or eliminate certain of the Company’s obligations under it.

On December 1, 2020, the Company and BMS entered into the amended BMS CLA. Under the amended BMS
CLA, BMS is limited to four Collaboration Targets. For a period of one-year from the effective date of the amended BMS
CLA,  BMS  may  replace  up  to  two  of  these  four  Collaboration  Targets  with  up  to  two  new  targets  in  the  field  of
cardiovascular disease. The Company continues to be eligible to receive research, development, and regulatory milestone
payments of up to $217.0 million for each Collaboration Target, if defined milestones are achieved.

BMS  is  no  longer  entitled  to  designate  the  fifth  to  tenth  Collaboration  Targets  and  as  such  the  Company’s
remaining  obligations  under  the  amended  BMS  CLA  are  substantially  reduced.  The  Company  is  no  longer  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 are being advanced, BMS may place a purchase order to be
supplied with research, clinical and commercial supplies. Subject to the terms of the amended BMS CLA, BMS has the
right  to  terminate  the  research,  clinical  and  commercial  supply  relationships,  and  has  certain  remedies  for  failures  of
supply,  up  to  and  including  technology  transfer  for  any  such  failure  that  otherwise  cannot  be  reasonably  resolved.  Both
BMS  and  the  Company  may  agree  to  a  technology  transfer  of  manufacturing  capabilities  pursuant  to  the  terms  of  the
amended BMS CLA.

The  amended  BMS  CLA  does  not  extend  the  initial  research  term.  BMS  may  place  purchase  orders  to  provide
limited services primarily related to analytical and development efforts in respect of the four Collaboration Targets. BMS
may request such services for a period not to exceed the earlier of (i) the completion of all activities under a Research Plan
and  (ii)  either  (A)  three  years  after  the  last  replacement  target  has  been  designated  by  BMS  during  the  one  year
replacement  period  following  the  amended  BMS  CLA  effective  date  or  (B)  three  years  if  no  replacement  targets  are
designated during this one year period and BMS continues to reimburse the Company for these services.

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The Company evaluated the impact of the amendment of the BMS CLA in relation to its performance obligation

related to:

–    Providing access to its technology and know-how in the field of gene therapy and participating in joint steering

committee and other governing bodies (materially satisfied as of December 1, 2020) (“License Revenue”).

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 has
on its measure of progress towards the completion of its performance obligation related to License Revenue and recorded
an adjustment to License Revenue as of December 1, 2020.

Services  to  BMS  are  rendered  by  the  Dutch  operating  entity.  Total  collaboration  and  license  revenue  generated
with  BMS  are  as  follows  (presented  as  revenue  from  a  related  party  until  November  30,  2020,  and  as  revenue  from
December 1, 2020 onwards):

Bristol Myers Squibb
Total

$
$

2020

Years ended December 31, 
2019
(in thousands)
7,281
$
7,281
$

$
$

37,514
37,514

2018

11,284
11,284

Amounts  owed  by  BMS  in  relation  to  the  Collaboration  and  License  Revenue  are  as  follows  (presented  as
“Accounts  receivables”  as  of  December  31,  2020  and  as  “Accounts  receivable  from  related  party”  as  of  December  31,
2019):

Bristol Myers Squibb
Total

Collaboration Revenue

December 31, 
2020

December 31, 
2019

(in thousands)

4,536
4,536

$
$

947
947

$
$

The  Company  recognizes  collaboration  revenues  associated  with  Collaboration  Target-specific  pre-clinical
analytical  development  and  process  development  activities  that  are  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  is
recognized when performance obligations are satisfied.

The Company generated $0.2 million collaboration revenue for the year ended December 31, 2020 (December 31,

2019: $2.3 million; December 31, 2018: $3.8 million).

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License Revenue

The Company recognized $33.0 million of License Revenue for the year ended December 31, 2020 (December

31, 2019: $5.0 million, December 31, 2018: $7.5 million).

On May 21, 2015, the Company recorded a $60.1 million upfront payment and in August 2015 it recorded a $15.0
million payment it received from BMS in relation to the designation of the second, third and fourth Collaboration Targets.
The Company recognizes 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 determines such progress by comparing activities
performed at the end of each reporting period with total activities expected to be performed. The Company estimates total
expected  activities  using  several  unobservable  inputs,  such  as  the  probability  of  BMS  designating  additional  targets,  the
probability  of  successfully  completing  each  phase  and  estimated  time  required  to  provide  services  during  the  various
development stages. The estimation of total services at the end of each reporting period involves considerable judgement.

The amount of services the Company expects to provide is significantly impacted by the number of Collaboration
Targets  that  it  estimates  BMS  would  pursue.  As  a  result  of  the  December  1,  2020  amendment  of  the  BMS  CLA  the
Company no longer is required to potentially provide any services in relation to six additional targets that BMS might have
designated.  The  Company  determined  its  remaining  performance  obligation  is  immaterial.  The  Company  adjusted  its
measure of progress towards the completion of its activities related to its services as of the December 1, 2020 modification
date accordingly. The Company 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.

The  Company  includes  variable  consideration  related  to  any  research,  development,  and  regulatory  milestone
payments,  in  the  transaction  price  once  it  is  considered  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
does not currently (with below exception) consider this probable.

On December 17, 2020 BMS designated one of the four Collaboration Targets as a candidate to advance into IND-
enabling studies entitling the Company to receive a $4.4 million research milestone payment. The Company recorded the
$4.4 million as License Revenue in the twelve-month period ended December 31, 2020.

The Company recognizes License Revenue related to product sales by BMS from any of the Collaboration Targets
when the sales occur. The Company is eligible to receive net sales-based milestone payments and tiered mid-single to low
double-digit  royalties  on  product  sales.  The  royalty  term  is  determined  on  a  licensed-product-by-licensed-product  and
country-by-country  basis  and  begins  on  the  first  commercial  sale  of  a  licensed  product  in  a  country  and  ends  on  the
expiration of the last to expire of specified patents or regulatory exclusivity covering such licensed product in such country
or, with a customary royalty reduction, ten years after the first commercial sale if there is no such exclusivity.

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4.            Fair value measurement

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  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.

The  Company’s  only  material  financial  assets  measured  at  fair  value  using  Level  1  inputs  is  cash  and  cash

equivalents.

The  liability  measured  at  fair  value  using  Level  3  inputs  as  of  December  31,  2020  was  the  derivative  financial
instrument. The Company had recorded derivative financial instruments as of December 31, 2019, that were measured at
fair value using Level 3 inputs. Changes in Level 3 items during the years ended December 31, 2020, 2019 and 2018 are as
follows:

Contingent

Derivative
financial

     consideration      instruments     

Total

Balance at December 31, 2017
Net gains recognized in profit or loss
Currency translation effects
Balance at December 31, 2018
Net losses recognized in profit or loss
Exercise of Hercules warrants
Currency translation effects
Balance at December 31, 2019
Net gains recognized in profit or loss
Derecognition of warrants
Recognition of derivative financial liability of CoC-payment
Currency translation effects
Balance at December 31, 2020

Derivative financial instruments

$

$

$

$

3,964
(3,846)
(118)

(in thousands)
1,635
$
(208)
(52)
1,375
2,530
(770)
(60)
3,075
(2,300)
(796)
2,613
53
2,645

— $
—
—
—
— $
—
—
—
—
— $

$

$

$

$

5,599
(4,054)
(170)
1,375
2,530
(770)
(60)
3,075
(2,300)
(796)
2,613
53
2,645

The Company issued derivative financial instruments related to its collaboration with BMS and in relation to the

issuance of the Hercules loan facility.

Derivative financial instruments BMS

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

● 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).

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On December 1, 2020, the Company derecognized the warrants when these were terminated in accordance with

the amended BMS CLA.

Pursuant to the terms of the BMS CLA the exercise price in respect of each warrant was equal to the greater of (i)
the  product  of  (A)  $33.84,  multiplied  by  (B)  a  compounded  annual  growth  rate  of  10% (or approximately $57.32  as  of
November 30, 2020) and (ii) the product of (A) 1.10 multiplied by (B) the weighted average volume price (“VWAP”) for
the 20 trading days ending on the date that is five trading days prior to the date of a notice of exercise delivered by BMS.

The fair value of the warrants as of December 31, 2019 was $3.1 million. During the year ended December 31,
2020, the Company recognized a $3.1 million gain in non-operating income / expense (December 31, 2019: $2.3 million
loss; December 31, 2018: $0.5 million gain) related to fair value changes of the BMS warrants. The gain recognized in the
year ended December 31, 2020 includes $0.8 million from the derecognition of the BMS warrants on December 1, 2020.

The  Company  used  Monte-Carlo  simulations  to  determine  the  fair  market  value  of  the  BMS  warrants.  The
valuation model incorporated several inputs, the risk-free rate adjusted for the period affected, an expected volatility based
on historical Company volatility, the expected yield on any dividends and management’s expectations on the timelines of
reaching certain defined trigger events for the exercising of the warrants, as well as management’s expectations regarding
the number of ordinary shares that would be issued upon exercise of the warrants. All of these represent Level 3 inputs.
Additionally, the model assumed BMS would exercise the warrants only if it was financially rational to do so.

The  warrants  could  only  have  been  exercised  following  the  occurrence  of  events  contractually  defined  in  the
warrant agreements. The probability of the occurrence of these events represented another significant unobservable input
used in the calculation of the fair value of the warrants.

On  December  1,  2020,  the  Company  and  BMS  terminated  the  BMS  warrants  and  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, uniQure (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
has not consummated any change of control transaction as of December 31, 2020 that would obligate it to make a CoC-
payment.  The  Company  determined  that  the  CoC-payment  should  be  recorded  as  a  derivative  financial  liability  as  of
December  1,  2020  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 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  event  within  the  biotechnology  industry.  The  Company  estimated  this  unobservable  input  using  the  best
information  available  as  of  December  1,  2020  and  December  31,  2020.  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 judgement 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 1,
2020 and December 31, 2020 was $2.6 million. The Company recorded a $2.6 million loss within “Other non-operating
expenses”  in  the  twelve-month  period  ended  December  31,  2020  related  to  the  initial  recognition  of  this  derivative
financial liability.

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Hercules loan facility

On June 14, 2013, the Company entered into a venture debt loan facility (the “Original Facility”) with Hercules
(see  Note  8,  “Long-term  debt”)  pursuant  to  a  Loan  and  Security  Agreement  (the  “Loan  Agreement”),  which  included  a
warrant  maturing  on  February  5,  2019.  The  warrant  was  not  closely  related  to  the  host  contract  and  was  accounted  for
separately  as  a  derivative  financial  liability  measured  at  fair  value  though  profit  or  loss.  The  warrant  included  in  the
Original  Facility  remained  in  place  following  the  2014,  2016  and  2018  amendments  of  the  loan.  The  Hercules  warrants
were exercised as of February 1, 2019. The Company issued 37,175 ordinary shares at $34.25 following the exercise of all
Hercules  warrants  and  receipt  of  $0.5  million  from  Hercules.  During  the  year  ended  December  31,  2020,  the  Company
recognized  no  more  gains  or  losses  in  other  non-operating  income  /  (expense)  (December  31,  2019:  $0.2  million  loss;
December 31, 2018: $0.3 million loss) related to fair value changes of the Hercules warrants.

Contingent consideration

In  connection  with  the  Company’s  acquisition  of  the  InoCard  business  (“InoCard”)  in  2014,  the  Company
recorded contingent consideration related to amounts potentially payable to InoCard’s former shareholders. The amounts
payable  in  accordance  with  the  sale  and  purchase  agreement  (as  amended  in  August  2017)  were  contingent  upon
realization  of  milestones  associated  with  its  S100A1  protein  research  program.  Following  the  discontinuation  of  the
research program the Company since 2018 no longer expects to realize those milestones and recorded a $3.8 million gain
within research and development expenses for the year ended December 31, 2018, to release the liability to profit and loss.

5.            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, 
2020

December 31, 
2019

(in thousands)

$

$

37,849
22,106
5,025
2,574
67,554
(35,226)
32,328

$

$

34,611
18,232
4,212
341
57,396
(28,625)
28,771

Total  depreciation  expense  was  $5.7  million  for  the  year  ended  December  31,  2020  (December  31,  2019:  $6.0
million, December 31, 2018: $6.5 million). Depreciation expense is allocated to research and development expenses 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)
Total

135

     December 31, 

     December 31, 

2020

2019

(in thousands)

$

$

15,949
16,379
32,328

$

$

15,490
13,281
28,771

    
    
 
 
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6.         Right-of-use asset and lease liabilities

The  Company  adopted  ASU  2016-02  “Leases  (Topic  842)”  as  well  as  ASU  2018-10  and  ASU  2018-11,  which
both relate to improvements to ASC 842. The Company adopted the standard using the modified retrospective approach
with an effective date as of the beginning of the Company’s fiscal year, January 1, 2019 (“new lease accounting standard”).
The  standard  requires  the  balance  sheet  recognition  for  leases.  Prior  years  were  not  recast  under  the  new  standard  and
therefore, those amounts are presented in accordance with the requirements of the previously effective lease standard ASC
840  (“historic  lease  accounting  standard”).  The  Company  elected  to  utilize  practical  expedients  available  for  expired  or
existing  contracts  which  allowed  the  Company  to  carryforward  historical  assessments  of  (1)  whether  contracts  are  or
contain leases, (2) lease classification, and (3) initial direct costs.

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.

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 Company consolidated its three Amsterdam sites into the new site at the end of
May 2017. The lease for the new 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 $6.6 million (EUR 5.4 million) as of December 31, 2020.

Operating lease liabilities

The components of lease cost in accordance with the new lease accounting standard were as follows:

Operating lease cost
Variable lease cost
Sublease income
Total lease cost

136

Year ended December 31, 
2019
2020

(in thousands)

5,052
607
(904)
4,755

$

$

4,474
507
(1,053)
3,928

$

$

    
    
    
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The  rent  expense  in  accordance  with  the  historical  lease  accounting  standard  for  the  year  ended  December  31,
2018, was calculated on a straight-line basis over the term of the lease and considered $12.2 million of lease incentives
received. Aggregate rent expense was as follows:

Rent expense - Lexington
Rent expense - Amsterdam
Total lease cost

     Year ended December 31, 

2018
(in thousands)

$

$

1,583
1,667
3,250

The  table  below  presents  the  lease-related  assets  and  liabilities  recorded  on  the  Consolidate  balance  sheets  in

accordance with the new lease accounting standard.

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,

2020

2019

(in thousands)

$

26,086

26,797

5,524

5,865

30,403
35,927

$

31,133
36,998

The weighted-average remaining lease term as of December 31, 2020, is 9.4 years, compared to 10.3 years as of
December 31, 2019, and the weighted-average discount rate as of December 31, 2020, is 11.37%, compared to 11.33% as
of December 31, 2019. The Company derived the weighted-average discount rate, adjusted for differences such as in the
term and payment patterns, from the Company’s loan from Hercules capital which was refinanced immediately prior to the
January 1, 2019, adoption date in December 2018.

The  table  below  presents  supplemental  cash  flow  and  non-cash  information  related  to  leases  required  in

accordance with the new lease accounting standard.

Operating cash flows for operating leases (1)

Year ended December 31, 

2020

2019

(in thousands)

$

5,769

$

4,717

(1) The  Company  has  received  $1.5  million  of  landlord  incentive  payments  for  the  year  ended  December  31,

2019, which are not included in the cash paid amounts.)

The Company did not obtain any right-of-use assets in exchange for the lease obligations during the year ended
December 31, 2020. Besides the initial recognition of operating right-of-use assets of $19.0 million upon adoption of the
new lease standards on January 1, 2019, the Company obtained $9.0 million of additional right-of-use assets in exchange
for lease obligations during the year ended December 31, 2019.

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Undiscounted cash flows

The table below reconciles the undiscounted cash flows as of December 31, 2020, 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, 2020 in accordance with the new lease accounting standard.

2021
2022
2023
2024
2025
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

Lexington

3,455
3,552
3,650
4,146
4,465
16,279
35,547

Amsterdam(1)
(in thousands)
2,069
$
2,069
2,069
2,069
2,069
12,239
22,584

$

(12,576)
22,971
(3,455)
19,516

$

(9,628)
12,956
(2,069)
10,887

$

$

$

Total

5,524
5,621
5,719
6,215
6,534
28,518
58,131

(22,204)
35,927
(5,524)
30,403

$

$

$

(1) Payments are due in EUR and have been translated at the foreign exchange rate as of December 31, 2020, of

$1.23 / €1.00)

7.            Intangible assets

a.            Acquired licenses

The following table presents the Company’s acquired licenses as of December 31:

Licenses
Less accumulated amortization and impairment
Licenses, net

    December 31,     December 31, 

2020

2019

(in thousands)

$

$

5,660
(2,299)
3,361

$

$

8,317
(2,890)
5,427

All intangible assets are owned by uniQure biopharma B.V, a subsidiary of the Company. The acquired licenses

have a weighted average remaining life of 8.5 years as of December 31, 2020.

During the year ended December 31, 2020, the Company capitalized $2.2 million of expenditures related to costs
incurred  in  relation  to  rights  to  exclusively  evaluate  certain  technologies  during  a  two-year  period  that  commenced  on
February  1,  2020.  During  the  same  period,  the  Company  disposed  of  a  number  of  licenses  determined  to  have  no
alternative future use. During the year ended December 31, 2019, the Company capitalized $1.0 million of expenditures
related to contractual milestone payments under existing license agreements.

As of December 31, 2020, the estimated future amortization expense for each of the five succeeding years and the

period thereafter is as follows:

Years

2021
2022
2023
2024
2025
Thereafter
Total

Amount
(in thousands)
1,277
427
144
144
144
1,225
3,361

$

$

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The amortization expense related to licenses for the year ended December 31, 2020 was $4.6 million (December
31, 2019: $0.6 million; December 31, 2018: $0.4 million). The impairment expense related to licenses for the year ended
December 31, 2020 was $0.3 million (December 31, 2019: $0.0 million; December 31, 2018 $0.1 million).

b.            Acquired research and development

The Company acquired research and development assets as part of its acquisition of InoCard in July 2014. Based
on  the  review  of  pre-clinical  data  associated  with  those  assets,  the  Company  does  not  expect  that  it  will  pursue  further
research related to those assets. Accordingly, the Company recorded a $5.4 million impairment loss within research and
development expenses in the year ended December 31, 2018, to reduce the asset’s carrying amount to its fair value of nil.

8.            Accrued expenses and other current liabilities

Accrued expenses and other current liabilities include the following items:

Accruals for services provided by vendors-not yet billed
Personnel related accruals and liabilities
Contract liability (see Note 3. Collaboration arrangements)
Total

9.           Long-term debt

December 31,  December 31, 

2020

2019

(in thousands)

$

$

8,269
7,687
2,082
18,038

$

$

5,425
7,032
—
12,457

On June 14, 2013, the Company entered into a venture debt loan facility with 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 to the Second Amended and Restated Loan and Security Agreement that both refinanced the then-
existing $20.0 million 2016 Amended Facility and provided an additional unconditional commitment of $15.0 million as
well  as  a  conditional  commitment  of  $15.0  million  that  expired  on  June  30,  2020  (the  “2018  Amended  Facility”).  At
signing of the 2018 Amended Facility, the Company drew down an additional $15.0 million for a total of $35.0 million
outstanding.  The  2018  Amended  Facility  extended  the  loan’s  maturity  date  from  May  1,  2020  until  June  1,  2023.  The
interest-only period was initially extended from November 2018 to January 1, 2021, and was further extended to January 1,
2022,  as  a  result  of  meeting  the  provision  in  the  2018  Amended  Facility  of  raising  more  than  $90.0  million  in  equity
financing in September 2019. The Company is required to repay the facility in equal monthly installments of principal and
interest between the end of the interest-only period and the maturity date. The interest rate continues to be adjustable and is
the greater of (i) 8.85% or (ii) 8.85% plus the prime rate less 5.50% per annum.

Under the 2018 Amended Facility, the Company paid a facility fee of 0.50% of the $35.0 million outstanding as of
signing and owes a back-end fee of 4.95% of the outstanding debt. In addition, in May 2020 the Company paid a back-end
fee of $1.0 million in relation to the 2016 Amended Facility.

The amortized cost (including interest due presented as part of accrued expenses and other current liabilities) of
the 2018 Amended Facility was $35.9 million as of December 31, 2020, compared to $36.3 million as of December 31,
2019, and is recorded net of discount and debt issuance costs. The foreign currency gain on the loan was $3.1 million in
2020 (2019: loss of $0.7 million; 2018: loss of $0.9 million). The fair value of the loan approximates its carrying amount.
Inputs to the fair value of the loan are considered Level 3 inputs.

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Interest expense recorded during the years ended December 31 was as follows:

Years

2020
2019
2018

$

Amount
(in millions)

3.7
3.7
2.0

As a covenant in the 2018 Amended 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. In combination with other covenants, the 2018 Amended 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.  The  Company  secured  the  facilities  by
directly  or  indirectly  pledging  its  total  assets  of  $340.4  million  with  the  exception  of  $115.2  million  of  cash  and  cash
equivalents and other current assets held by uniQure N.V.

The  2018  Amended  Facility  contains  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,  2020,  the  Company  was  in  compliance  with  all  covenants  and
provisions.

The aggregate maturities of the loan, including $7.4 million of coupon interest payments and financing fees, for
each of the 29 months after December 31, 2020, are as follows (prior to the January 2021 loan amendment – see Note 18,
“Subsequent events”):

Years

2021
2022
2023
Total

10.          Shareholders’ equity

Amount
(in thousands)

3,141
25,002
14,269
42,412

$

$

As of December 31, 2020, the Company’s authorized share capital is €3.0 million (or $3.7 million when translated
at  an  exchange  rate  as  of  December  31,  2020,  of  $1.23  /  €1.00),  divided  into  60,000,000  ordinary  shares,  each  with  a
nominal value of €0.05. Under Dutch law, the authorized share capital is the maximum capital that the Company may issue
without amending its articles of association.

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, 2020, and 2019 and 2018 the Company’s reserves were restricted for payment of dividends
for an accumulated foreign currency translation gain of $9.9 million in 2020 and accumulated foreign currency translation
losses of $6.7 million and $7.3 million in 2019 and 2018, respectively.

On  September  10,  2019,  the  Company  completed  a  follow-on  public  offering  of  4,891,305  ordinary  shares  at  a
public  offering  price  of  $46.00  per  ordinary  share,  and  on  September  13,  2019,  the  Company  completed  the  sale  of  an
additional 733,695 ordinary shares at a public offering price of $46.00 per ordinary share pursuant to the exercise by the
underwriters  of  the  option  to  purchase  additional  ordinary  shares,  resulting  in  total  gross  proceeds  to  the  Company  of
$258.8  million.  The  net  proceeds  to  the  Company  from  this  offering  were  $242.7  million,  after  deducting  underwriting
discounts and commissions and other offering expenses payable by the Company. The Company deducted $0.6 million of
expenses incurred related to this offering from additional paid-in capital in the accompanying consolidated balance sheets
and  reflected  this  within  the  proceeds  from  public  offering  of  shares,  net  of  issuance  costs  within  the  cash  flows  from
financing activities.

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On  May  7,  2018,  the  Company  completed  a  follow-on  public  offering  of  5,175,000  ordinary  shares  at  a  public
offering price of $28.50 per ordinary share, resulting in gross proceeds to the Company of $147.5 million. The net proceeds
to the Company from this offering were $138.4 million, after deducting underwriting discounts and commissions and other
offering  expenses  payable  by  the  Company.  The  Company  deducted  $0.2  million  of  expenses  incurred  related  to  this
offering  from  additional  paid-in  capital  in  the  accompanying  consolidated  balance  sheet  and  reflected  this  within  the
proceeds from public offering of shares, net of issuance costs within the cash flows from financing activities.

In February 2019, the Company issued 37,175 ordinary shares to Hercules pursuant to exercised warrants for $0.5
million  in  aggregate  cash  consideration.  The  Company  deemed  the  sale  and  issuance  of  these  shares  to  be  exempt  from
registration under the Securities Act in reliance on Regulation S of the Securities Act, as an offshore offering of securities
and  such  shares  were  issued  as  restricted  shares.  Hercules  represented  to  us  that  they  were  in  compliance  with  the
requirements of Regulation S.

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11.          Share-based compensation

Share-based  compensation  expense  recognized  by  classification  included  in  the  consolidated  statements  of

operations and comprehensive loss was as follows:

Research and development
Selling, general and administrative
Total

$

$

2020

Year ended December 31, 
2019
(in thousands)
8,029
$
9,439
17,468

$

$

$

11,965
9,823
21,788

2018

3,994
6,699
10,693

Share-based compensation expense recognized by award type was as follows:

Award type
Share options
Restricted share units
Performance share units
Total

2020

Year ended December 31, 
2019
(in thousands)

2018

$

$

11,434
7,364
2,990
21,788

$

$

7,896
4,117
5,455
17,468

$

$

4,766
3,020
2,907
10,693

As  of  December  31,  2020,  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)

$

$

23,492
14,489
1,763
39,744

2.78
2.09
1.03
2.45

The  Company  satisfies  the  exercise  of  share  options  and  vesting  of  Restricted  Share  Units  (“RSUs”)  and

Performance Share Units (“PSUs”) through newly issued 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, 2020, 14,000 fully vested share options are outstanding (December 31, 2019: 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  and  2018,  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 and 3,000,000 shares in 2018, for a total of 8,601,471 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,

2019:

Number of
     ordinary shares     

Weighted average
exercise price

Weighted average
     remaining contractual life     

Aggregate intrinsic
value

Options

Outstanding at December 31, 2019
Granted
Forfeited
Expired
Exercised
Outstanding at December 31, 2020
Thereof, fully vested and exercisable at
December 31, 2020
Thereof, outstanding and expected to vest
after December 31, 2020

$
2,683,104
653,852
$
(172,548) $
(6,451) $
(498,678) $
2,659,279
$

1,542,405

1,116,874

$

$

21.29
49.63
42.03
45.76
14.43
28.13

18.05

42.06

Outstanding and expected to vest at
December 31, 2019

1,346,337

$

28.76

in years

7.46

$

(in thousands)
135,238

7.18

6.15

8.61

32,729

29,161

3,568

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)

209,254

$

$
$

18.4

5.7
7.2

The following table summarizes information about the weighted average grant-date fair value of options during

the years ended December 31:

Granted, 2020
Granted, 2019
Granted, 2018
Vested, 2020
Forfeited, 2020

     Weighted average

Options
653,852
647,526
937,832
713,924
(172,548)

grant‑date fair value
28.08
$
23.57
15.90
14.04
24.63

The  following  table  summarizes  information  about  the  weighted  average  grant-date  fair  value  of  options  at

December 31:

Outstanding and expected to vest, 2020
Outstanding and expected to vest, 2019

Options
1,116,874
1,346,337

     Weighted average

grant‑date fair value
24.25
$
17.05

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

143

2020
70%
10 years

Year ended December 31, 
2019
70% - 75%
10 years
0.76% - 1.44% 1.92% - 2.87% 2.67% - 3.20%
0%

2018
75% - 80%
10 years

0%

0%

    
 
 
 
    
 
 
    
    
Table of Contents

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:

2020
2019
2018

Restricted Share Units

Exercised
during the year

498,678
434,665
388,203

$

Intrinsic value
(in thousands)
11,927
17,700
7,515

The following table summarizes the RSU activity for the year ended December 31, 2020:

RSU
     Weighted average

Non-vested at December 31, 2019
Granted
Vested
Forfeited
Non-vested at December 31, 2020

Number of
ordinary shares
370,830
376,799
(206,881)
(73,404)
467,344

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)

158,623

grant-date fair
value

28.62
48.18
24.18
46.41
43.56

18.2
7.4

$
$
$
$
$

$
$

The  following  table  summarizes  information  about  the  weighted  average  grant-date  fair  value  of  RSUs  granted

during the years ended December 31:

2020
2019
2018

Granted
during the year
376,799
198,504
262,599

     Weighted average

grant‑date fair value
48.18
$
38.63
23.61

The following table summarizes information about the total fair value of RSUs that vested during the years ended

December 31:

2020
2019
2018

$

Total fair value
(in thousands)
12,156
10,152
8,546

RSUs generally vest over one to three years. RSUs granted to non-executive directors will vest one year from the

date of grant.

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Performance Share Units

The following table summarizes the PSU activity for the year ended December 31, 2020:

Non-vested at December 31, 2019
Granted
Vested
Forfeited
Non-vested at December 31, 2020

PSU
    Weighted average

Number of
ordinary shares
479,422
$
$
91,003
(354,105) $
(3,706) $
$

212,614

grant-date fair
value

21.17
57.56
17.44
57.56
42.32

Total weighted average grant date fair value of PSUs granted
during the period (in $ millions)

$

5.2

In  January  2019,  the  Company  awarded  PSUs  to  its  executives  and  other  members  of  senior  management.
These PSUs were earned in January 2020 based on the Board’s assessment of the level of achievement of agreed upon
performance targets through December 31, 2019. The PSUs awarded for the year ended December 31, 2019 will vest on
the third anniversary of the grant, subject to the grantee’s continued employment.

The following table summarizes information about the weighted average grant-date fair value, determined at of

the date these were earned, of PSUs granted during the years ended December 31:

2020
2019
2018

     Granted

     Weighted average

during the year
91,003
132,362

grant‑date fair value
57.56
$
31.71
$
—
— $

The following table summarizes information about the total fair value of PSUs that vested during the years ended

December 31:

2020
2019
2018

$

Total fair value
(in thousands)
21,852
1,056
1,350

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, 2020, 6,181 shares have been issued (December 31, 2019: 9,202 and December 31, 2018: 2,591). As of
December 31, 2020, a total of 132,026 ordinary shares remains available for issuance under the ESPP plan.

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12.          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
Depreciation, amortization, and impairment expenses
Patent and license expenses
Other operating expenses
Total

2018

2020

Years ended December 31, 
2019
(in thousands)
59,130
$
30,130
10,588
11,297
6,669
1,654
8,813
$ 128,281

$

75,926
35,977
13,388
17,370
10,648
2,899
8,772
$ 164,980

$ 46,254
23,596
7,281
7,748
12,415
1,202
1,618
$ 100,114

Details of employee-related expenses for the years ended December 31 are as follows:

Wages and salaries
Share-based compensation expenses
Consultant expenses
Social security costs
Health insurance
Pension costs - defined contribution plans
Other employee expenses
Total

13.          Other non-operating income / (expense)

$

$

2020

2018

Years ended December 31, 
2019
(in thousands)
32,029
$
17,533
2,464
2,727
1,933
1,052
1,392
59,130

40,919
21,831
2,423
4,068
2,271
1,779
2,635
75,926

$

$ 26,646
10,708
2,974
2,231
1,471
907
1,317
$ 46,254

Other non-operating income / (expense) consists of changes in the fair value of derivative financial instruments

(see Note 4, “Fair value measurement”).

Other non-operating income:
Derivative gains
Total other non-operating income:
Other non-operating expense:
Derivative losses
Total other non-operating expense:
Other non-operating income / (expense), net

2020

Years ended December 31, 
2019
(in thousands)

2018

$

$

483
483

—
—
483

$

$

— $
—

(2,530)
(2,530)
(2,530) $

208
208

—
—
208

The Company recorded a net gain of $0.5 million for the year ended December 31, 2020, compared to a net loss
of $2.3 million and a net gain of $0.5 million for the years ended December 31, 2019 and December 31, 2018, respectively,
related to the derivative financial instruments issued as part of its collaboration with BMS. The $0.5 million gain for the
year ended December 31, 2020 includes a $2.3 million gain related to the reduction of the fair market value of the BMS
warrants, a $0.8 million gain related to the derecognition of the BMS warrants on December 1, 2020 and a $2.6 million
loss  related  to  the  initial  recognition  of  the  derivative  financial  liability  related  to  the  CoC-payment.  The  Company
recorded  a  net  loss  of  $0.2  million  and  $0.3  million  for  the  years  ended  December  31,  2019  and  December  31,  2018,
respectively, related to warrants issued to Hercules.

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14.         Income taxes

a.           Income tax benefit / (expense)

No current tax expense or liabilities were recorded in 2020 by the Company’s Dutch and U.S entities. Due to the
uncertainty  surrounding  the  realization  of  favorable  tax  attributes  in  future  tax  returns,  the  Company  has  recorded  a  full
valuation  allowance  against  the  Company’s  net  deferred  tax  assets  in  the  Netherlands.  The  Company  released  the  full
valuation allowance against the Company’s net deferred tax assets in the United States as of December 31, 2020.

There are no significant unrecognized tax benefits as of December 31, 2020 and 2019.

For the years ended December 31, 2020, 2019 and 2018, loss before income taxes consists of the following:

Dutch operations
U.S. operations
Foreign operations
Total

2020

Years ended December 31, 
2019
(in thousands)

2018

$

$

(130,493) $
(10,950)

—  
(141,443) $

(111,820) $
(12,381)

—  
(124,201) $

(85,721)
2,646
3
(83,073)

The  income  tax  benefit  /  (expense)  for  the  years  ended  December  31,  2020,  2019  and  2018,  consists  of  the

following:

Current tax expense
Dutch operations
U.S. operations
Foreign operations
     Total current tax expense
Deferred tax benefit / (expense)

Dutch operations
U.S. operations
Foreign operations
     Total deferred tax benefit / (expense)

Total income tax benefit / (expense)

b.           Tax rate reconciliation

2020

Years ended December 31, 
2019
(in thousands)

2018

$

$

$

$
$

— $
—  
—
— $

— $

16,419

—  
$
$

16,419
16,419

— $
—  
—  
— $

— $
—  
—  
— $
— $

—
—
(22)
(22)

(209)
—
—
(209)
(231)

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  income  tax  benefit  /  (expense)  for  the  years  ended
December 31, 2020, 2019 and 2018, is as follows:

Loss before income tax income / (expense) for the period
Expected income tax benefit at the tax rate enacted in the Netherlands (25%)
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
Other net change in valuation allowance
Nondeductible expenses
Change in fair value of contingent consideration
Income tax benefit / (expense)

147

2020

Years ended December 31, 
2019
(in thousands)
$ (141,443) $ (124,201) $ (83,073)
31,050   20,768

35,361  

2018

247  

(495)  

(106)

16,419
(30,568)  
(5,041)  
—  
16,419 $

—

—
(25,583)   (19,207)
(2,648)
(4,972)  
962
—  
(231)
— $

$

    
    
    
 
 
 
 
    
    
    
 
 
 
 
 
 
 
 
    
 
 
 
 
 
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Nondeductible expenses predominantly relate to share-based compensation expenses and affected the effective tax
rate  by  an  amount  of  $5.8  million  in  2020  (2019:  $4.4  million;  2018:  $2.7  million).  Derivative  financial  instruments
affected the effective tax rate by income of $0.8 million in 2020 (expense of $0.6 million in 2019; $0.0 million in 2018),
which reduced the nondeductible expenses resulting from share-based compensation expenses.

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 at December 31, 2020 and 2019 are as follows:

     Years ended December 31, 

2020

2019

(in thousands)

Deferred tax assets:
Net operating loss carryforwards
Lease liabilities
Intangible assets
Interest carryforwards
Accrued expenses and other current liabilities
Property, plant and equipment
Derivative financial instrument
Deferred revenue
Gross deferred tax asset
Less valuation allowance
Net deferred tax asset
Right-of-use asset
Prepaid expenses
Deferred tax liability
Net deferred tax asset

$ 158,614
9,515
1,702
1,597
1,118
1,072
661
—  

$

$ 174,279
(150,113)
24,166
(7,702)
(45)
(7,747)
16,419

$
$

$

99,644
7,861
770
—
628
761
-
6,676
$ 116,340
(109,856)
6,484
(6,484)
—
(6,484)
—

$
$

$

Changes in the valuation allowance were as follows:

January 1,
Changes related to reduction of deferred revenue recorded in equity upon
implementation of ASC 606 Revenue recognition as of January 1, 2018
Changes recorded in profit and loss
Increase/(reduction) related to 2020, 2019 and 2018 Dutch tax reforms
Release of valuation allowance related to expected current year and future
periods recorded in profit and loss
Other changes including currency translation effects
December 31,

Years ended December 31, 
2019

2020

2018

$

109,856

(in thousands)
85,100
$

$

93,682

—
30,568
18,287

—
25,583
4,059

(6,229)
19,207
(15,670)

(16,419)
7,821
150,113

—
(4,886)
$ 109,856

$

—
(5,890)
85,100

$

Included within changes recorded in profit and loss for the year ended December 31, 2020 are benefits of $1.2
million from the utilization of U.S. net operating loss carryforwards ($0.8 million for the year ended December 31, 2019
and $0.9 million for the year ended December 31, 2018).

The valuation allowance as of December 31, 2020 is primarily related to net operating loss carryforwards in the
Netherlands  that,  in  the  judgment  of  management,  are  not  more-likely  than-not  to  be  realized.  In  addition,  the  valuation
allowance  as  of  December  31,  2019  included  deferred  tax  assets  for  net  operating  loss  carryforwards  and  temporary
differences  in  the  United  States  of  America.  Management  considered  projected  future  taxable  income  and  tax-planning
strategies in making this assessment. A valuation allowance will be recorded against deferred tax assets if it is more likely
than not that some or all the deferred tax assets will not be realized.

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Netherlands

The  Company  determined  that  in  accordance  with  Dutch  tax  law  it  would  recognize  the  CSL  Behring  License
Revenue as well as the License Fees as taxable results as of the date on which the Company is contractually entitled to
receive (or obligated to make) a payment under the CSL Behring Agreement. The Company expects to continue to incur
taxable losses in the Netherlands except for the period in which it would receive the $450.0 million upfront payment under
the CSL Behring Agreement. In the event that the Company recognizes the $450.0 million upfront payment in 2021, such
payment  is  expected  to  be  subject  to  Dutch  corporate  income  tax  at  a  rate  of  25.0%.  However,  the  Company  does  not
expect  that  it  will  be  required  to  pay  any  income  taxes  in  the  period  in  which  it  recognizes  the  $450.0  million  upfront
payment as taxable revenue, as such payment is not expected to exceed the net operating losses that it carries forward in the
Netherlands. The Company specifically assessed the impact of the CSL Behring agreement with respect to retaining a full
valuation  allowance  as  of  December  31,  2020.  Closing  of  the  CSL  Behring  Agreement  is  contingent  on  the  successful
completion of reviews under the antitrust laws in the United States, Australia, and the United Kingdom. The transactions
have not closed as of December 31, 2020 as the Company received a Second Request from the United States Federal Trade
Commission, on January 4, 2021. Closing of the transaction is dependent on the timing, extent, and result of the Second
Request.  In  its  assessment  of  whether  or  not  it  was  more  likely  than  not  that  the  Company’s  deferred  tax  assets  in  the
Netherlands  will  be  realized,  the  Company  considered  all  relevant  facts  and  circumstances,  including  similar  regulatory
reviews as well as the five-year cumulative losses reported by the Company in the Netherlands. The Company concluded
that it should continue to record a full valuation allowance as of December 31, 2020 in relation to its Dutch net operating
loss carryforwards.

A portion of the valuation allowance for deferred tax assets relates to follow-on offering costs. Any subsequently
recognized tax benefits will be credited directly to contributed capital. As of December 31, 2020, that amount was $7.7
million ($6.9 million as of December 31, 2019). The change is attributable to changes in the foreign currency rate.

The Dutch corporate tax rate for fiscal years 2018, 2019 and 2020 was 25%. During the years 2018 and 2019, the
Dutch government enacted various changes to the corporate income tax rate applicable to future fiscal years. In September
2020, further changes were enacted that retain the corporate rate at 25% from 2021 onwards.

A tax reform in December 2018 limited the carryforward of tax losses arising from January 1, 2019, to six years
after the end of the respective period. Tax losses incurred prior to this date continue to expire nine years after the end of the
respective period.

As  of  December  31,  2020,  new  loss  compensation  rules  were  accepted  by  the  Dutch  Senate.  However,  the  bill
includes a provision that the new compensation rules will be effective by a separate Governmental Decree, which has not
been  introduced  as  of  December  31,  2020.  Hence,  the  new  loss  compensation  rules  are  not  enacted  as  of  December  31,
2020. If enacted, the rules allow losses to be carried forward indefinitely, but from fiscal year 2022 onwards would limit
offsetting taxable profit in excess of EUR 1.0 million to 50% of the taxable profit.

The  Dutch  fiscal  unity  as  of  December  31,  2020  has  an  estimated  $588.2  million  (2019:  $414.0  million;  2018:
$311.7 million) of taxable losses that can be offset in the following six to seven years. The expiration dates of these Dutch
losses  are  summarized  in  the  following  table.  In  the  year  ended  December  31,  2020  unused  tax  losses  of  $18.5  million
(December 31, 2019: $20.7 million) expired.

Loss expiring

2021

2022

$ 15,206

$ 25,878

2023
(in thousands)
$
$ 25,202

2024

     2025-2027

— $ 521,931

The fiscal periods after 2017 are still open for inspection by the Dutch tax authorities.

United States of America

The federal corporate tax rate in the U.S. is 21%. In addition, the Company is subject to state taxes resulting in a
combined tax rate of 27.32% for its U.S. operation. As of December 31, 2020, an estimated $42.3 million of net operating
losses remain to be carried forward. These losses will expire between 2035 and 2037.

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The Company’s U.S. operations generated taxable income in the fiscal years 2018, 2019 and 2020. Based on the
current design of the Company’s worldwide operations, the Company expects to continue to generate taxable income in the
U.S. during the foreseeable future. As of December 31, 2020, the Company considers it more likely than not that it will
utilize  its  net  deferred  tax  assets  in  the  U.S.  and  therefore  released  the  remaining  valuation  allowance  of  $16.4  million
through profit and loss as of this date.

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  after  2017  are  still  open  for  inspection  by  the  Internal  Revenue  Service.  The  Company  is

currently not under examination by the IRS for any tax years.

15.          Basic and diluted earnings per share

Diluted earnings per share is calculated by adjusting the weighted average number of ordinary shares outstanding,
assuming conversion of all potentially dilutive ordinary shares. As the Company has incurred a loss in the years presented,
all potentially dilutive ordinary shares would have an antidilutive effect, if converted, and thus have been excluded from
the computation of loss per share. The shares are presented without giving effect to the application of the treasury method
or exercise prices that would be above the share price as of December 31, 2020, December 31, 2019, and December 31,
2018, respectively. In addition, the BMS warrants were not exercisable as of December 31, 2019, and December 31, 2018,
since this would have required the prior designation of Collaboration Targets by BMS. This would generally have resulted
in a lower number of potentially dilutive ordinary shares as some stock option grants as well as the BMS warrants would
have been excluded.

The potentially dilutive ordinary shares are summarized below:

2020

Years ended December 31, 
2019
(ordinary shares)

2018

BMS warrants (derecognized as of December 1, 2020 - see Note 4, "Fair value
measurement")
Stock options under 2014 Plans
Non-vested RSUs and earned PSUs
Stock options under previous option plan
Hercules warrants (exercised February 1, 2019)
Employee share purchase plan
Total potential dilutive ordinary shares

16.          Commitments and contingencies

— 8,893,000
2,683,104
850,252
14,000
—
485

8,575,000
2,673,712
789,490
32,567
37,175
1,012
12,440,841 12,108,956

2,659,279
679,958
14,000
—
560
3,353,797

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.

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17.        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 (December 31, 2020: 2.4 million ordinary shares or 5.3% of outstanding ordinary shares), 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 3 “Collaboration arrangements and concentration of credit risk”) as well as the elimination
of the BMS warrants (see Note 4, “Fair value measurement”).

On  September  14,  2020,  the  Company  appointed  Ricardo  Dolmetsch,  Ph.D.  as  President,  Research  and
Development. Dr. Dolmetsch succeeded Sander van Deventer, M.D., Ph.D., the former Executive Vice President, Research
and Product Development. On August 25, 2020, the Company entered into a separation agreement with Robert Gut, M.D.,
Ph.D., pursuant to which Dr. Gut transitioned from his role as Chief Medical Officer on October 14, 2020, to be appointed
a  non-executive  director  of  the  Board  of  Directors.  On  December  1,  2020,  at  an  extraordinary  general  meeting,  the
Company’s  shareholders  voted  to  approve  the  appointment  of  Dr.  Gut  as  a  non-executive  director  on  the  Board  of
Directors. Dr. Gut had previously been appointed as a non-executive director on the Board of Directors on June 13, 2018
by the Company’s shareholders and had resigned as a non-executive director on August 20, 2018, to be appointed as the
Company’s Chief Medical Officer. On October 24, 2018, at an extraordinary general meeting, the Company’s shareholders
voted to approve the appointment of Dr. Gut as an executive director on the Board of Directors.

On June 17, 2020, the Company’s shareholders voted to approve the appointment of Leonard E. Post, Ph.D., as a
non-executive  director  of  the  Board  of  Directors.  Dr.  Post  replaced  Dr.  David  Schaffer,  whose  term  as  a  non-executive
director of the Board of Directors ended on the same date. Dr. Post has also assumed the role of chair of the Company’s
Research and Development Committee of the Board of Directors.

On August 20, 2019, the Company promoted Alex Kuta, Ph.D., to Executive Vice President, Operations. Dr. Kuta,
in addition to regulatory affairs, became responsible for global quality as well as GMP manufacturing at the Company’s
facility in Lexington, Massachusetts. As of the same date Sander van Deventer, M.D., Ph.D., was promoted to Executive
Vice President, Research and Product Development, and Dr. van Deventer, in addition to his responsibilities for research,
also  became  responsible  for  the  Company’s  product  development.  As  a  result  of  these  changes  Scott  McMillan,  Ph.D.
retired from uniQure. The employment of Dr. van Deventer terminated on September 14, 2020.

In  August  2019,  the  Company  entered  into  an  Amended  and  Restated  Agreement  Collaboration  and  License
Agreement (“Amended CLA”) as well as an additional new Collaboration and License Agreement (“New CLA”) with its
related party 4DMT Molecular Therapeutics, Inc. (“4DMT”). In the Amended CLA, the Company received from 4DMT an
exclusive,  sublicensable,  worldwide  license  under  certain  4DMT  intellectual  property  rights  to  research,  develop,  make,
use,  and  commercialize  previously  selected  Adeno-associated  virus  (“AAV”)  capsid  variants  and  certain  associated
products using 4DMT proprietary AAV technology for delivery of gene therapy constructs to cells in the central nervous
system and the liver (“the Field”). In the New CLA, the parties agreed to research and develop, at 4DMT’s cost, new AAV
capsid variants using 4DMT proprietary AAV technology for delivery of up to six additional transgene constructs in the
Field that will be selected by the Company. As of June 2020, 4DMT is no longer considered a related party as a result of
David Schaffer no longer being a non-executive member of the Company’s Board of Directors.

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18.         Subsequent events

Amendment Loan Facility

As  of  December  31,  2020,  a  $35.0  million  term  loan  was  outstanding  in  accordance  with  the  2018  Amended

Facility between the Company and Hercules.

On January 29, 2021, the Company and Hercules amended the Company’s loan facility with Hercules Capital Inc.
entered,  (“2021  Amended  Facility”).  Pursuant  to  the  2021  Amended  Facility,  Hercules  agreed  to  the  2021  Term  Loan,
increasing the aggregate principal amount of the term loan facility from $35.0 million to $135.0 million. On January 29,
2021, the Company drew down $35.0 million of the 2021 Term Loan. The Company may draw down the remaining $65.0
million under the 2021 Term Loan in a series of one or more advances of not less than $20.0 million each until December
15, 2021. Advances under the 2021 Term Loan bear 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 and all accrued but unpaid interest on advances under 2021 Term
Loan is due on June 1, 2023, which date may be extended by the Company by up to two twelve-month periods. Advances
under the 2021 Term Loan may not be prepaid until six months after the Closing Date, following which the Company may
prepay all such advances without charge.

In addition to the 2021 Term Loan, the amendment also extends the interest-only payment period of the previously

funded $35.0 million term loan from January 1, 2022 to June 1, 2023.

The Company paid a $0.4 million facility charge on January 29, 2021. End of term charges in respect of advances

under the 2021 Term Loan range from 1.65% to 6.85% depending on the maturity date.

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Exhibit
No.

EXHIBIT INDEX

Description

3.1 Amended Articles of Association of the Company (incorporated by reference to Exhibit 3.1 of the Company’s
annual  report  on  Form  10-K  for  the  year  ended  December  31,  2018  (file  no.  0001-36294)  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 (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).

10.5t Form  of  Performance  Stock  Unit  Award  under  the  2014  Share  Incentive  Plan  (incorporated  by  reference  to
Exhibit  10.5  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).

10.10 Patent License Agreement (L-107-2007), effective as of May 2, 2007, by and between the Company and the
National  Institutes  of  Health,  as  amended  on  December  31,  2009,  May  31,  2013,  and  November  11,  2013
(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, 2017 filed with the Securities and Exchange Commission).

10.11 Patent  License  Agreement  (L-116-2011),  effective  as  of  August  10,  2011,  by  and  between  the  Company  and
National Institutes of Health, as amended on May 31, 2013 and November 11, 2013 (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
March 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).

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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).

10.21 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).

10.26 Second Amended and Restated Loan and Security Agreement, dated as of May 6, 2016 by and among uniQure
Biopharma  B.V.,  uniQure,  Inc.,  uniQure  IP  B.V.,  the  Company's  subsidiaries  listed  therein,  and  Hercules
Technology Growth Capital, Inc (incorporated by reference to Exhibit 10.30 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.

10.27† 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).

10.29† 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).

10.32 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).

10.34t Employment  Agreement  dated  August  4,  2017  between  uniQure  biopharma  B.V.  and  Sander  van  Deventer
(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, 2017 filed with the Securities and Exchange Commission).
10.36t 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).

10.37† 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).

10.38t  Employment Agreement dated August 20, 2018 by and between uniQure, Inc. and Dr. Robert Gut (incorporated
by reference to Exhibit 10.38 of the Company’s annual report on Form 10-K for the year ended December 31,
2018 (file no. 0001-36294) filed with the Securities and Exchange commission).

10.39 Amendment No. 1 to Second Amended and Restated Loan and Security Agreement dates as of December 6,
2018  by  and  among  uniQure  Biopharma  B.V.,  uniQure,  Inc.,  uniQure  IP  B.V.,  the  Company,  and  Hercules
Technology Growth Capital, Inc (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  December  10,
2018.

10.40 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.

10.41t 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.

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10.42

10.43

10.44t

10.45t

10.47

10.48

10.49t

10.50t

10.51t

10.52t

10.53†

10.54t

10.55t

10.56t

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.

Employment Agreement, executed September 17, 2019, by and between the Company and Dr. Sander van
Deventer (incorporated by reference to Exhibit 10.2 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 Collaboration and License Agreement by and between 4D Molecular Therapeutics,
Inc  and  uniQure  biopharma  B.V.,  dated  August  6,  2019  (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 September 30, 2019
filed with the Securities and Exchange Commission).

Collaboration  and  License  Agreement  by  and  between  4D  Molecular  Therapeutics,  Inc  and  uniQure
biopharma B.V., dates August 6, 2019 (incorporated by reference to Exhibit 10.5 of the Company’s quarterly
report  on  Form  10-Q  (file  no.  001-36294)  for  the  period  ending  on  September  30,  2019  filed  with  the
Securities and Exchange Commission).

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).

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).

Amended and Restated Employment Agreement, executed March 1, 2020 by and between uniQure Inc. and
Maria Cantor (incorporated by reference to Exhibit 10.51 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).

Amended and Restated Employment Agreement, executed March 1, 2020 by and between uniQure Inc. and
Jonathan Garen (incorporated by reference to Exhibit 10.52 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).

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10.57*†

10.58*

14.1

21.1*

23.1*

23.2*

24.1*

31.1*

31.2*

32.1*

101*

Amendment to Collaboration and License Agreement by and between uniQure Biopharma B.V. and Bristol-
Myers Squibb Company dated December 1, 2020.

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.

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.

Consent of Independent Registered Public Accounting Firm – PricewaterhouseCoopers 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.

Section 1350 Certification.

The following materials from the Company’s Annual Report on Form 10-K for the year ended December 31,
2020,  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.

104*

The cover page from the Company’s Annual Report on Form 10-K for the year ended December 31, 2020,
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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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

UNIQURE, N.V.

By:

/s/ MATTHEW KAPUSTA
Matthew Kapusta
Chief Executive Officer
(Principal Executive and 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, Chief Financial Officer
and Director (Principal Executive and Financial
Officer)

March 1, 2021

/s/ CHRISTIAN KLEMT
Christian Klemt

Chief Accounting Officer

March 1, 2021

/s/ PHILIP ASTLEY SPARKE
Philip Astley Sparke

Director

/s/ MADHAVAN BALACHANDRAN
Madhavan Balachandran

Director

/s/ ROBERT GUT
Robert Gut

/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

Director

Director

Director

Director

Director

Director

157

March 1, 2021

March 1, 2021

March 1, 2021

March 1, 2021

March 1, 2021

March 1, 2021

March 1, 2021

March 1, 2021

    
    
Exhibit 4.1

DESCRIPTION OF THE REGISTRANT’S SECURITIES
REGISTERED PURSUANT TO SECTION 12 OF THE
SECURITIES EXCHANGE ACT OF 1934

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 60,000,000 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 may subsequently be reappointed for a
term of a maximum of two years, which reappointment may be extended by at most 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 17, 2020, 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  17,  2020,  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.

Exhibit 10.57

Confidential
Execution Version

*Portions of this exhibit have been omitted for confidential treatment pursuant to Item 601(b)(10)(iv) of
Regulation S-K.

AMENDMENT TO COLLABORATION AND LICENSE AGREEMENT

(the
This  AMENDMENT  TO  THE  COLLABORATION  AND  LICENSE  AGREEMENT 
“Amendment”)  is  effective  as  of  December  1,  2020  (the  “Amendment  Effective  Date”),  by  and  between
UNIQURE BIOPHARMA B.V., a corporation organized under the laws of the Netherlands, having its principal
place  of  business  at  Paasheuvelweg  25a,  1105  BP  Amsterdam,  The  Netherlands  (“uniQure”),  and  BRISTOL-
MYERS SQUIBB COMPANY, a Delaware corporation headquartered at  430  E.  29  Street,  14  Floor, New York,
New York, USA 10016.  UNIQURE N.V. is a party to this Agreement solely for purposes of Section 2.  uniQure
and BMS are sometimes referred to herein individually as a “Party” and collectively as the “Parties”.

RECITALS

A.

uniQure and BMS are parties to that certain Collaboration and License Agreement, dated April 6,
2015 (the “Agreement”),  pursuant  to  which  the  Parties  are  collaborating  to  discover  and  develop  gene  therapy
products for the treatment of cardiovascular diseases.

B.

BMS  and  uniQure  N.V.,  an  Affiliate  of  uniQure,  have  also  entered  into  that  certain  Investor
Agreement  (the  “Investor  Agreement”),  that  certain  Share  Subscription  Agreement  (the  “Subscription
Agreement”),  that  certain  Seventh  Collaboration  Warrant  Agreement,  and  that  certain  Tenth  Collaboration
Warrant Agreement (collectively, the “Warrant Agreements”), each one dated April 6, 2015.

C.

The  Parties  now  wish  to  concurrently  amend  the  Agreement,  in  accordance  with  Section  17.1
thereof,  to  limit  the  number  of  Collaboration  Targets  and  to  modify  the  indication  exclusivity  provisions  and
certain financial terms, among other changes, and to terminate the Warrant Agreements.

NOW, THEREFORE, in consideration of the foregoing premises and the mutual promises, covenants and

conditions contained in this Amendment, uniQure and BMS, intending to be legally bound, agree as follows.

1.

DEFINITIONS

Capitalized terms used in this Amendment that are not otherwise defined herein shall have the meanings

such terms are given in the Agreement

2.

TERMINATION OF WARRANT AGREEMENTS; CHANGE OF CONTROL PAYMENT

2.1 Warrant  Agreements.    BMS  and  uniQure  N.V.  hereby  agree  that  on  the  Amendment  Effective
Date, each of the Warrant Agreements shall terminate and be of no further force and effect, without any exercise
by BMS of its right to subscribe for and acquire from uniQure N.V. the Warrant Shares (as defined thereunder).

2.2

Payment  upon  Change  of  Control  of  uniQure.    Subject  to  the  provisions  of  this  Section  2.2,
substantially  simultaneously  with  the  consummation  of  the  first  Change  of  Control  Transaction  of  uniQure  that
occurs  prior  to  the  earlier  of  (i)  [*]  anniversary  of  the  Amendment  Effective  Date  and  (ii)  BMS’  delivery  of  a
Target Cessation Notice for all four (4) Collaboration Targets, uniQure (or its Third Party acquirer) shall pay to
BMS in Dollars via electronic funds transfer to an account designated by BMS a one-time, non-refundable, non-
creditable cash payment (the “Change of Control Payment”) of seventy million dollars ($70,000,000), provided
that (x) if seventy million dollars ($70,000,000) is greater than five percent (5.0%) of the Net Proceeds from such
Change of Control Transaction, the Change of Control Payment shall be an amount equal to five percent (5.0%) of
such Net Proceeds, and (y) if seventy million dollars ($70,000,000) is less than one percent (1.0%) of such Net
Proceeds, the Change of Control Payment shall be an amount equal to one percent (1.0%) of such Net Proceeds.
 For the avoidance of doubt, the sale or transfer of uniQure N.V. constitutes a Change of Control Transaction as
set forth in subsection (3) of the definition of Change of Control Transaction (set forth in the Agreement).  [*].
Net Proceeds shall be calculated as set forth in Schedule 2.2.  For clarity, (a) the foregoing payment shall apply
only  to  the  first  Change  of  Control  Transaction  of  uniQure  and  not  to  any  subsequent  Change  of  Control
Transaction  and  (b)  the  foregoing  payment  shall  be  in  addition  to  any  amounts  paid  or  payable  to  BMS  in
connection  with  a  Change  of  Control  Transaction  in  respect  of  any  equity  securities  of  uniQure  (or  any  of  its
Affiliates) held by BMS at such time or in respect of any other agreement, understanding or arrangement between
uniQure and BMS, or their respective Affiliates, at such time.

Target Cessation Notice.    With  respect  to  each  Collaboration  Target,  BMS  shall,  in  good  faith,
2.3
notify  uniQure 
termination  of  all  research,  Development  and
Commercialization (if applicable) of all Target Therapeutics for such Collaboration Target (such notice, a “Target
Cessation Notice”).

in  writing  promptly  following  BMS’ 

3.

AMENDMENT OF THE AGREEMENT

3.1

Research  Program.    The  Parties  agree  that,  notwithstanding  anything  in  the  Agreement  to  the

contrary:

(a)

the Research Term expired at the end of the Initial Research Term on May 21, 2019;

(b)

notwithstanding such expiration of the Research Term, the Parties shall continue to conduct
the Research Program under the Research Plan in accordance with the terms of the Agreement, until the earlier of
 [*];

(c)

from  and  after  the  Amendment  Effective  Date,  there  shall  be  no  more  than  four  (4)

Collaboration Targets;

(d)

as  of  the  Amendment  Effective  Date,  the  Collaboration  Targets  and  the  Exclusive
Indications that BMS is pursuing are those set forth in Schedule 3.1 (such Targets, the “Existing Collaboration
Targets”), and all of the Existing Collaboration Targets are BMS Proprietary Targets;

(e)

as of the Amendment Effective Date, there are no Reserved Targets and no Targets in which

BMS is potentially interested that are subject to the terms of Section 3.4(d) of the Agreement;

2

(f)

from and after the Amendment Effective Date, BMS shall have no rights to designate new

Collaboration Targets under Section 3.3(a) or 3.3(c)(i) of the Agreement;

(g)

during the Replacement Period, BMS shall have the right to designate  [*] Reserved Targets
for one or more Cardiovascular Disease(s) using the process in Section 3.4 of the Agreement, Section 3.3(b) of the
Agreement  will  not  apply  to  the  designation  of  such  Reserved  Targets,  such  Reserved  Targets  shall  be  BMS
Proprietary Targets, and during the Replacement Period, uniQure shall have no right to, directly or indirectly, have
any discussions or engage in any other activities with any Third Party regarding a possible collaboration or license
with respect to any Reserved Target or any Variant thereof nor any right to initiate or engage in any other activities
with respect to an internal program for any Reserved Target or any Variant thereof; and

(h)

from  and  after  the  Amendment  Effective  Date,  BMS  shall  have  the  right  to  replace  [*]
Collaboration  Targets  with  Replacement  Targets  pursuant  to  Section  3.3(c)(ii)  of  the  Agreement,  as  amended
below.

For clarity, (A) in the event that BMS designates any Target as a Reserved Target during the Replacement Period,
at the end of the Replacement Period, any Reserved Target will cease to be a Reserved Target, and (B) BMS will
have no right to designate any Target as a Reserved Target after the Replacement Period.

3.2

Amendment of Article 1; Certain Defined Terms.

(a)

The definition of “Therapeutic” in Section 1.175 of the Agreement is hereby deleted and

replaced with the following:

“Therapeutic” means (a) any Target Therapeutic discovered, owned or Controlled by or for uniQure or
any of its Affiliates as part of the performance of the Research Program, (b) any Target Therapeutic for a
Collaboration Target discovered by or for uniQure or any of its Affiliates (i.e., whether or not as part of the
performance  of  the  Research  Program)  as  of  the  Effective  Date  or  thereafter  during  the  Term,  (c)  any
peptide or any AAV derived vector with a Collaboration Target that is generically or specifically claimed
by  a  Valid  Claim  of  the  uniQure  Patents,  (d)  any  Target  Therapeutic  discovered  by  BMS  or  any  other
Related Party as part of the performance of the Research Program, and (e) any Target Therapeutic for a
Collaboration Target which BMS’ manufacture, approved use or sale thereof would infringe a Valid Claim
of the uniQure Patents but for the exclusive license granted to BMS under this Agreement.  For clarity, the
inclusion of “Collaboration Target” in clause (c) does not limit the AAV derived vectors that are included
in the uniQure Technology licensed to BMS under this Agreement.

New Defined Terms.  Article 1 of the Agreement is hereby amended to add the following new definitions:

“CoC  Opt-Out  Period”  has  the  meaning  set  forth  in  the  definition  of  Indication  Exclusivity  Opt-Out
Period.

“Exclusive Indication” means [*].

“Non-Exclusive Indication” means  [*].

3

“Indication  Exclusivity  Opt-Out  Period”  means  (a)  the  period  commencing  on  the  Amendment
Effective Date and ending on [*] anniversary of the Amendment Effective Date, and (b) if the first Change
of Control Transaction of uniQure occurs after  [*] anniversary of the Amendment Effective Date, the [*]
period following the effective date of such Change of Control Transaction (such [*] period, the “CoC Opt-
Out Period”).

“Replacement Period” has the meaning set forth in Section 3.3(c)(ii).

3.3
following:

Replacement Targets.  Section 3.3(c)(ii) of the Agreement is hereby deleted and replaced with the

(ii) Replacing a Collaboration Target.  During the period from the Amendment Effective Date until  [*]
anniversary thereof (the “Replacement Period”), BMS shall have the right to replace any of the Existing
Collaboration Targets, and after the first such replacement, any then-current Collaboration Target, with a
new Target for one or more Cardiovascular Disease(s) (a “Replacement Target”) in accordance with and
subject to the Excluded Target process as described in Section 3.4; provided however, that (A) BMS may
replace a Collaboration Target hereunder no more than  [*], and (B) if BMS is replacing a Collaboration
Target  with  a  Reserved  Target,  BMS  may  do  so  by  written  notice  to  the  JSC  without  following  the
Excluded Target process in Section 3.4.  For the avoidance of doubt, no Target Designation Fee is due or
payable for a Replacement Target.

3.4

Excluded  Targets  and  Non-Exclusive  Indications.    Section  3.4  of  the  Agreement  is  hereby

deleted and replaced with the following:

Excluded  Target  and  Non-Exclusive  Indication  Process;  Designation  of  Reserved  Targets  and
Replacement Targets for Collaboration Targets.

(a)

Target Reviewer.

(i)

If,  during  the  Replacement  Period,  BMS  desires  to  add  a  Reserved  Target
(which BMS may do  [*]) or propose a new Target as a Replacement Target for a Collaboration Target,
BMS  shall  notify  uniQure  through  the  Joint  Discovery  Working  Group  of  (A)  such  Target,  (B)  the
Collaboration Target that is being replaced (if applicable), and (C) the proposed Exclusive Indication(s) for
which  BMS  intends  to  Develop  Therapeutics,  which  Exclusive  Indications  may  be  Cardiovascular
Diseases only.  Within  [*] after such notification, uniQure shall provide an independent reviewer mutually
agreed  to  by  BMS  and  uniQure  (the  “Target  Reviewer”)  with  an  updated  Excluded  Target  list  (which
shall include the Target identification information for each Excluded Target) and Non-Exclusive Indication
list.  Within  [*] after uniQure has provided the Target Reviewer with such updated Excluded Target list
and Non-Exclusive Indication list, BMS shall provide to the Target Reviewer the Target BMS proposes to
become  a  Replacement  Target  (and  thereby,  a  Collaboration  Target)  or  Reserved  Target  and  the
corresponding proposed Exclusive Indication(s).  Within  [*] thereafter, the Target Reviewer shall notify
BMS  whether  or  not  the  proposed  Target  is  an  Excluded  Target  and,  if  such  proposed  Target  is  not  an
Excluded Target, whether or not each of the proposed Exclusive Indications is a Non-Exclusive Indication.
 If the proposed Target is not an Excluded Target, BMS shall then

4

have the right to designate such Target as a Collaboration Target or Reserved Target, as the case may be, in
accordance with Section 3.4(b).   [*].

(ii)

In  the  case  where  BMS  is  considering  a  Target  as  a  potential  Replacement
Target  or  potential  Reserved  Target  and  does  not  want  to  bring  such  Target  to  the  attention  of  uniQure
through  the  Joint  Discovery  Working  Group  before  determining  whether  such  Target  is  an  Excluded
Target,  then  BMS  shall  request  uniQure  to  provide  an  updated  Excluded  Target  list  and  updated  Non-
Exclusive Indication list to the Target Reviewer within  [*] after such request without obligation to specify
the  Target  or  proposed  Exclusive  Indication  for  which  the  Target  Reviewer  process  shall  be  initiated.
Within  [*] after uniQure has provided the Target Reviewer with such updated lists, BMS shall provide to
the Target Reviewer the Target BMS proposes to become a Replacement Target or Reserved Target and the
proposed Exclusive Indication(s).  Within  [*] thereafter, the Target Reviewer shall notify BMS whether or
not  the  proposed  Target  is  an  Excluded  Target  and,  if  such  proposed  Target  is  not  an  Excluded  Target,
whether or not each of the proposed indications is a Non-Exclusive Indication.  If the proposed Target is
not  an  Excluded  Target,  BMS  shall  have  the  right  to  designate  such  Target  as  a  Collaboration  Target  or
Reserved Target, as the case may be, in accordance with Section 3.4(b).  BMS  [*] and shall not be obliged
to disclose to uniQure for which Target the Target Reviewer function was performed.

(b)

Consultation  with  uniQure;  Designation  of  Reserved  Target  or  Replacement
Target for a Collaboration Target and any Exclusive Indication(s).  Promptly after the Target Reviewer
has indicated that the proposed Target is not an Excluded Target, BMS shall notify uniQure through the
Joint  Discovery  Working  Group  with  respect  to  such  proposed  Target,  including  providing  the  Joint
Discovery Working Group the Target identification information with respect to such Target and proposed
Exclusive  Indications  for  such  Target.    The  Joint  Discovery  Working  Group  shall  discuss  the  proposed
Collaboration Target or Reserved Target, as the case may be, and the proposed Exclusive Indications for
such Target; provided however, that BMS shall have the final decision making authority with respect to the
designation  of  a  proposed  Target  as  a  Collaboration  Target  or  Reserved  Target,  as  the  case  may  be,
provided that such Target is not an Excluded Target.  BMS may designate such Target as a Collaboration
Target or Reserved Target, as the case may be, by written notification to uniQure, and in conjunction with
the  designation  of  such  proposed  Target  as  a  Collaboration  Target  by  BMS,  uniQure  shall  deliver  a
certificate  for  such  proposed  Target  substantially  in  the  form  attached  to  this  Agreement  as  Exhibit  G.
  Where  a  proposed  indication  is  a  Non-Exclusive  Indication  at  the  time  such  Target  is  designated  as  a
Collaboration  Target,  or  if  there  is  no  scientific  rationale  or  therapeutic  applicability  for  such  proposed
Exclusive  Indication,  then  such  indication  will  not  be  an  Exclusive  Indication.    Where  a  proposed
indication is a Non-Exclusive Indication at the time such Target is designated as a Reserved Target, or if
there is no scientific rationale or therapeutic applicability for such indication, when and if such Reserved
Target  is  subsequently  designated  by  BMS  as  a  Replacement  Target,  such  indication  will  not  be  an
Exclusive Indication.

(c)

Adding  a  New  Exclusive  Indication.    If,  during  the  Replacement  Period,  BMS

desires to propose a new potential Exclusive Indication for

5

any Collaboration Target, BMS shall notify uniQure of such potential Exclusive Indication for which BMS
intends  to  Develop  Therapeutics  through  the  Joint  Discovery  Working  Group.    Within    [*]  after  such
notification,  uniQure  shall  provide  a  Target  Reviewer  with  an  updated  Non-Exclusive  Indication  list.
 Within  [*] after uniQure has provided the Target Reviewer with such updated Non-Exclusive Indication
list,  BMS  shall  provide  to  the  Target  Reviewer  the  proposed  Non-Exclusive  Indication.    Within    [*]
thereafter,  the  Target  Reviewer  shall  notify  BMS  whether  or  not  the  proposed  Exclusive  Indication  is  a
Non-Exclusive  Indication.    If  the  proposed  Exclusive  Indication  is  not  a  Non-Exclusive  Indication  and
there is a scientific rationale and therapeutic applicability for such indication, it will become an Exclusive
Indication,  and  BMS  will  promptly  thereafter  provide  an  updated  Development  Plan  including
Development activities for such Exclusive Indication to the JSC.  BMS shall pay all fees and expenses of
the  Target  Reviewer  for  performing  this  Target  Reviewer  function.    For  clarity,  BMS  shall  not  have  the
right to add an Exclusive Indication after the Replacement Period.

(d)

Alternative Procedure.  For purposes of the designation of any particular Target as
a Replacement Target or Reserved Target or the designation of any indication as an Exclusive Indication,
the Parties may mutually agree to not utilize the Target Reviewer, and instead allow the Joint Discovery
Working  Group  to  consider  any  particular  Target  as  a  Replacement  Target  or  Reserved  Target  and  any
indication as an Exclusive Indication, and allow BMS to designate such particular Target as a Replacement
Target  or  Reserved  Target  or  such  indication  as  an  Exclusive  Indication  without  utilizing  the  Target
Reviewer.

3.5 Manufacturing.  Section 6.2 of the Agreement is hereby deleted and replaced with the following:

Manufacturing Overview.

(a)  Within  the  scope  of  the  licenses  granted  in  Section  7.1(a)  and  (b)  and  subject  to  the  payment
obligations  of  BMS  pursuant  to  Article  8  and  the  provisions  set  forth  in  Section  6.3,  BMS  shall,
notwithstanding anything to the contrary herein, have (i) the exclusive right and will be solely responsible
for the manufacture of Therapeutics that are not for Gene Therapy (e.g., peptides) and Products containing
such  Therapeutics  (“Non-Gene  Therapy  Therapeutics”  and  “Non-Gene  Therapy  Products”,
respectively) itself or through one or more Affiliates or Third Parties selected by BMS, and (ii) the right,
but not the obligation, to manufacture Therapeutics that are for Gene Therapy and any Products containing
any such Therapeutics itself or through one or more Affiliates or Third Parties selected by BMS.  Where
BMS exercises its right to so manufacture any amount of any Therapeutic that is for Gene Therapy and
any  Product  containing  any  such  Therapeutic,  uniQure  shall  have  no  obligations  in  connection  with  the
manufacture of such amount of such Therapeutic and such Product manufactured by BMS or its Affiliate
or any Third Party.

(b)  For  all  Therapeutics  and  Products  that  are  for  Gene  Therapy,  uniQure  shall  be  responsible  for  the
manufacture and supply of such Therapeutics and Products.  Supply of Therapeutics for research and pre-
clinical  purposes  will  be  conducted  under  Schedule  3.5  to  the  Amendment.    Clinical  supply  will  be
conducted pursuant to that certain Master Clinical Supply Agreement, dated April 25, 2017, as amended
on the Amendment Effective Date, between uniQure and E.R. Squibb and Sons, LLC, an Affiliate of BMS
(the  “Clinical  Supply  Agreement”).    The  Parties  (or  their  respective  Affiliates)  shall  enter  into  a
commercial  supply  agreement  that  shall  contain  the  provisions  set  forth  in  Exhibit  J  except  for  those
pertaining to clinical supply and the termination provisions, which shall be modified to permit BMS (or
the  Applicable  Affiliate(s))  to  terminate  such  commercial  supply  agreement  in  its  entirety  or  on  a
Collaboration  Target-by-Collaboration  Target,  Therapeutic-by-Therapeutic  or  Product-by-Product  basis
and to terminate any statement of work under such commercial supply agreement at any time without

6

cause on  [*] prior  written  notice,  in  each  case  subject  to  payments,  if  any,  to uniQure set forth in such
agreement  (the  “Commercial  Supply  Agreement”),  and  shall  enter  into  the  Commercial  Supply
Agreement no later than  [*].  Schedule 3.5 of the Amendment, the Clinical Supply Agreement and the
Commercial Supply Agreement are hereinafter, individually and collectively, the “Supply Agreement(s)”.
  Notwithstanding  anything  to  the  contrary  in  this  Agreement  or  any  Supply  Agreement,  BMS  (or  the
applicable Affiliate(s)) may terminate any Supply Agreement in its entirety or on a Collaboration Target-
by-Collaboration Target, Therapeutic-by-Therapeutic or Product-by-Product basis and may terminate any
statement of work under any Supply Agreement at any time without cause on  [*] prior written notice, in
each case subject to payments, if any, to uniQure set forth in the applicable Supply Agreement. For clarity,
nothing contained herein will limit any of BMS’ rights hereunder, including BMS’ right to manufacture
Therapeutics  that  are  for  Gene  Therapy  and  any  Products  containing  any  such  Therapeutics  itself  or
through one or more Affiliates or Third Parties selected by BMS as set out in Section 6.2(a).

(c)  Notwithstanding  anything  to  the  contrary  herein  or  in  any  of  the  Supply  Agreement(s),  (i)  uniQure
shall conduct its manufacture and supply obligations hereunder and under the Supply Agreement(s) using
  [*],  and  (ii)  if  BMS  desires  that  any  Therapeutic  be  manufactured  and  supplied  using    [*],  the  “Other
Platforms”), BMS shall have the right to manufacture and supply, or have manufactured and supplied, any
or all of its requirements of any such Therapeutic using any Other Platform and shall be solely responsible
for  such  manufacture  and  supply,  at  its  sole  expense,  and  uniQure  shall  have  no  rights  or  obligations  in
connection with such manufacture and supply (and, for clarity, (A) neither BMS nor any of its Affiliates
will have any obligations to uniQure hereunder or otherwise with respect to such manufacture and supply
of any Therapeutic using any such Other Platform, and (B) for as long as a Collaboration Target remains a
Collaboration  Target,  any  Therapeutics  and  Products  manufactured  for  such  Collaboration  Target  using
any Other Platform will be subject to all other terms of the Agreement, including all payment obligations
of BMS, except that there will be no payment obligation for the Manufacturing Cost-Based Component of
Supply Price).

3.6

Third Party Manufacturing.  Section 6.3 of the Agreement is hereby deleted and replaced with

the following:

Third  Party  Manufacturing.  Within  the  scope  of  the  licenses  granted  in  Section  7.1(a)  and  (b)  and
subject to the payment obligations of BMS pursuant to Article 8 and the provisions set forth in Section 6.2,
BMS may exercise any of its manufacturing rights (including any have made rights) with respect to any (i)
Non-Gene Therapy Therapeutics and Non-Gene Therapy Products, and (ii) Therapeutics and Products for
Gene Therapy, in each case, through one or more Third Party manufacturers; provided however, that the
Third  Party  manufacturer  undertakes  in  writing  obligations  of  confidentiality  and  non-use  regarding
Confidential  Information  of  uniQure  (including  uniQure  Manufacturing  Technology  received  by  such
Third Party manufacturer) that are consistent with those undertaken by the Parties pursuant to Article 12
hereof; provided further, that  [*].  Such Third Party manufacturers shall be obligated in writing not to use
the uniQure Know-How and uniQure Manufacturing Technology for any use, other than [*].

3.7

Restatement of Exclusive License and Limitations.  Sections 7.1(a) and 7.1(e) of the Agreement

are hereby restated as the following Section 7.1(a):

(a)

Exclusive License Grant.  Subject to the terms and conditions of this Agreement and the
terms and conditions of any Third Party agreement that are applicable to a sublicensee under such Third
Party agreement (including the Existing License Agreements), uniQure hereby grants to BMS an exclusive
(even as to uniQure, except as provided in Section 7.3) license, with the right to grant sublicenses (through

7

multiple tiers) as provided in Section 7.2, under the uniQure Technology to research, develop, make, have
made,  use,  sell,  offer  for  sale,  export  and  import  (including  the  exclusive  right  to  Develop  and
Commercialize)  Collaboration  Targets,  Therapeutics  and  Products  in  the  Field  in  the  Territory.   Without
limiting the generality of the foregoing terms of this Section 7.1(a), the license granted by uniQure to BMS
pursuant to this Section 7.1(a) shall include, subject to the terms and conditions of this Agreement and the
terms and conditions of any Third Party agreement that are applicable to a sublicensee under such Third
Party agreement (including the Existing License Agreements), an exclusive (even as to uniQure, except as
provided in Section 7.3) sublicense, with the right to grant sublicenses (through multiple tiers) as provided
in  Section  7.2,  under  the  Information  and  Patents  included  in  the  uniQure  Technology  and  licensed  to
uniQure under any Third Party Agreements to which uniQure is a party, to research, develop, make, have
made,  use,  sell,  offer  for  sale,  export  and  import  (including  the  exclusive  right  to  Develop  and
Commercialize) Collaboration Targets, Therapeutics and Products in the Field in the Territory.  For clarity,
BMS’ licenses under this Section 7.1(a) and Sections 7.1(b) and (c) shall cover only Collaboration Targets,
and Therapeutics and Products with respect to the applicable Collaboration Target, and only for so long as
the  applicable  Collaboration  Target  remains  a  Collaboration  Target  (i.e.,  has  not  been  replaced  or
terminated).   Accordingly,  the  licenses  under  this  Section  7.1  with  respect  to  a  particular  Collaboration
Target,  and  Therapeutics  and  Products  with  respect  to  such  Collaboration  Target,  shall  terminate  when
such Collaboration Target is terminated or replaced and is therefore no longer a Collaboration Target.  For
further clarity, subject to the terms of this Agreement and any Supply Agreement, BMS and its Affiliates
shall have the right to use Third Parties to assist with, and/or to conduct, discovery, research, development,
pre-clinical, clinical, commercial and other activities with respect to the Therapeutics for the Collaboration
Targets,  including  studies,  testing  and  validation,  and  the  right  for  BMS  to  make  and  have  made
Therapeutics and research grade and other materials (including uniQure Materials) (itself or by any of its
Affiliates  or  any  Third  Parties  selected  by  BMS)  to  conduct  research,  pre-clinical,  development,
commercial and other activities.

3.8

Indication Exclusivity.  Section 11.1(d) of the Agreement (which for clarity includes only the first

clause thereof and not the subsequent paragraphs) is hereby deleted and replaced with the following:

“for as long as BMS is pursuing the Development of or is Commercializing a Therapeutic or Product for
any  Exclusive  Indication,  with  respect  to  discovery,  research,  Development  or  Commercialization
activities for such Exclusive Indication in the Field in the Territory (including with respect to discovery or
research activities for the purpose of identifying Target Therapeutics for such Exclusive Indication).”

3.9

Indication  Exclusivity  Opt-Out.    A  new  Section  11.2  is  hereby  added  to  the  Agreement  as

follows:

Indication Exclusivity Opt-Out.  At any time during the Indication Exclusivity Opt-Out Period, uniQure
(or as the case may be, its successor in interest) may opt out of the exclusivity obligations under Section
11.1(d)  with  respect  to  a  particular  indication  by  written  notice  to  BMS  (such  notice,  the  “Opt-Out
Notice” and such indication, the “Opt-Out Indication”).  uniQure may exercise such right to opt out up to
 [*].  Upon BMS’ receipt of the Opt-Out Notice (the “Opt-Out Exercise”), the following will apply:

All  payments  under  Sections  8.3,  8.4  and  8.5  will  be  reduced  by    [*]  of  the  amounts
(a)
otherwise  payable  under  such  sections  and,  in  addition,  if  the  Opt-Out  Exercise  occurs  during  the  CoC
Opt-Out Period, uniQure shall refund to BMS  [*] of all amounts previously paid by BMS under Sections
8.3,  8.4  and  8.5.    Such  reduction  will  apply  for  each  Opt-Out  Exercise.    For  example,  [*].  For  the
avoidance  of  doubt,  and  notwithstanding  anything  contained  herein  to  the  contrary,  for  each  Opt-Out
Exercise, payments under Sections 8.3, 8.4 and 8.5 will be reduced for all of the Collaboration Targets, not
just the Collaboration Target(s) for which the Opt-Out Indication is being worked on by BMS.

8

(b)
BMS shall not be obligated to inform the JSC or any subcommittees or working groups of
its Development activities with respect to Therapeutics and Products for the Collaboration Target to which
the  Opt-Out  Indication  relates,  to  the  extent  such  activities  are  for  the  Opt-Out  Indication,  except  to  the
extent necessary for uniQure to conduct its obligations under this Agreement or any separate agreement
for  the  supply  of  Therapeutics  and  Products  for  Gene  Therapy  for  research  purposes  or  any  Supply
Agreement.

(c)
uniQure  shall  establish  and  maintain  appropriate  firewalls  to  segregate  its  independent
activities  on  the  Opt-Out  Indication  and  its  personnel  (and,  if  applicable,  those  of  its  Third  Party
collaborator) conducting such activities from activities performed by or on behalf of BMS or its Affiliates
under this Agreement or any Supply Agreement, in each case for the Collaboration Target(s) to which such
Opt-Out  Indication  relates  and  the  personnel  performing  such  activities,  (A)  to  ensure  that  no  BMS
Confidential Information and no Information generated under this Agreement or any Supply Agreement is
disclosed to any of such personnel performing such independent activities or used in connection with such
independent activities, other than  [*], and (B) to ensure that any and all intellectual property (including
know-how,  patents,  copyright,  trademarks  and  trade  secrets),  regulatory  materials,  regulatory  filings  and
approvals,  materials  and  other  proprietary  Information  generated  in  connection  with  such  independent
activities  on  the  Opt-Out  Indication  [*]  will  be  segregated  from  activities  performed  pursuant  to  this
Agreement  or  any  Supply  Agreement.    Without  limiting  the  foregoing,  such  firewalls  will  include  all
personnel  conducting  manufacturing  activities,  including  manufacturing  development  (e.g.,  analytical
development and process development) [*].

For clarity, the Opt-Out Exercise applies only to exclusivity with respect to the Opt-Out Indication under
Section  11.1(d),  and  will  not  affect  exclusivity  under  Section  11.1(c)  with  respect  to  any  Collaboration
Target.  For further clarity, when uniQure exercises an Opt-Out Exercise, uniQure shall have no right to
work on any Collaboration Target or Variant thereof, including on any Therapeutic for any Collaboration
Target  for  any  indication,  except  as  permitted  under  the  paragraphs  of  Section  11.1  that  follow  Section
11.1(d).

4.

MISCELLANEOUS

4.1

Full  Force  and  Effect.  This  Amendment  amends  the  terms  of  the  Agreement  and  is  deemed
incorporated into the Agreement.  The provisions of the Agreement, as amended by this Amendment, remain in
full force and effect.

4.2

Counterparts. This Amendment may be executed in one or more counterparts, each of which will
be an original and all of which together will constitute one instrument and may be executed and delivered through
the use of facsimiles or email of pdf copies of this executed Amendment, and each such scanned or pdf copy of
this Amendment that includes a Party’s signature will be deemed an original.

9

IN WITNESS WHEREOF, BMS, uniQure and uniQure N.V. have executed this Amendment, effective

as of the Amendment Effective Date.

BRISTOL-MYERS SQUIBB COMPANY

    UNIQURE BIOPHARMA B.V.

By:

/s/ Christian Klemt

Name: Christian Klemt

Title: Chief Accounting Officer & Director

By:

/s/ [*]

Name:[*]

Title: [*]

Solely for purposes of Section 2:

UNIQURE N.V.

By:

/s/ Matthew Kapusta

Name:Matthew Kapusta

Title: Chief Executive Officer & Executive Director

Schedule 2.2
Net Proceeds; Calculation of Change of Control Payment

[*]

Schedule 3.1
Existing Collaboration Targets and Exclusive Indications

The four Existing Collaboration Targets and Exclusive Indications are:

 [*]

2

Schedule 3.5
Research Supply Terms

This Schedule 3.5 includes terms and conditions for the supply of research materials by uniQure to BMS.

 [*]

Exhibit 10.58

EXECUTION VERSION

*Portions of this exhibit have been omitted for confidential treatment pursuant to Item 601(b)(10)(iv) of
Regulation S-K.

AMENDMENT NO. 2 TO SECOND AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT

This  AMENDMENT  NO.  2  TO  SECOND  AMENDED  AND  RESTATED  LOAN  AND  SECURITY
AGREEMENT (this “Amendment”), is dated as of January 29, 2021 and is entered into by and among (a) (i) UNIQURE
BIOPHARMA B.V., a private limited liability company incorporated and existing under the laws of the Netherlands, having
its  corporate  seat  at  Amsterdam,  the  Netherlands  and  registered  at  the  trade  register  of  the  Chamber  of  Commerce  for
Amsterdam under number 34275365 (“uniQure Bio”), (ii) UNIQURE, INC., a Delaware corporation (“US Borrower” and
together with uniQure Bio hereinafter collectively referred to as “Borrower”),  (iii)  UNIQURE  IP  B.V.,  a  private  limited
liability company incorporated and existing under the laws of the Netherlands, having its corporate seat at Amsterdam, the
Netherlands  and  registered  at  the  trade  register  of  the  Chamber  of  Commerce  for  Amsterdam  under  number  34275369
(“uniQure IP”),  and  (iv)  UNIQURE  N.V.  (formerly  uniQure  B.V.),  a  public  limited  company  incorporated  and  existing
under  the  laws  of  the  Netherlands,  having  its  corporate  seat  at  Amsterdam,  the  Netherlands  and  registered  at  the  trade
register  of  the  Chamber  of  Commerce  for  Amsterdam  under  number  54385229  (“uniQure  Holdings”  and  together  with
Borrower and uniQure IP, the “Obligors”), (b) HERCULES  CAPITAL,  INC.,  a  Maryland  corporation  in  its  capacity  as
administrative agent for itself and the Lender (as defined herein) (in such capacity, the “Agent”), and (c) the several banks
and  other  financial  institutions  or  entities  from  time  to  time  parties  to  the  Loan  Agreement  (collectively,  referred  to  as
“Lender”).    Capitalized  terms  used  herein  without  definition  shall  have  the  same  meanings  given  them  in  the  Amended
Loan Agreement (as defined below).

RECITALS

A.

WHEREAS,  Obligors,  Agent  and  Lender  have  entered  into  that  certain  Second  Amended  and  Restated
Loan and Security Agreement, dated as of May 6, 2016, as amended by Amendment No. 1 to Second Amended and Restated
Loan  and  Security  Agreement  dated  as  of  December  6,  2018  (as  so  amended  and  as  may  further  be  amended,  restated,
amended and restated, supplemented or otherwise modified from time to time, the “Loan Agreement”), pursuant to which
Lender has agreed to extend and make available to Borrower certain advances of money;

B.

WHEREAS, under the Loan Agreement, there are 2018 Term Loan Advances outstanding in the aggregate
principal amount of Thirty-Five Million Dollars ($35,000,000) and Lender has not made any 2018 Term B Loan Advance to
Borrower;

C.

WHEREAS,  Borrower  has  requested  Lender  to  make  available  to  Borrower  term  loans  in  an  aggregate

principal amount of up to One Hundred Million Dollars ($100,000,000); and

D.

WHEREAS,  Obligors  and  Lender  have  agreed  to  amend  the  Loan  Agreement  upon  the  terms  and

conditions more fully set forth herein.

AGREEMENT

NOW  THEREFORE,  in  consideration  of  the  foregoing  Recitals  and  intending  to  be  legally  bound,  the  parties

hereto agree as follows:

1

1.

AMENDMENTS.

1.1.

Subject  to  and  upon  the  satisfaction  of  the  conditions  specified  in  Section  4  hereof,  the  Loan
Agreement and certain schedules thereto are hereby amended to reflect the changes which are attached as Exhibit
A hereto [*].

1.2.

Each  reference  in  the  Loan  Agreement  to  “this  Agreement”  and  the  words  “hereof,”  “herein,”
“hereunder,” or words of like import, shall mean and be a reference to the Loan Agreement as amended by this
Amendment (the “Amended Loan Agreement”).

2.

BORROWER’S REPRESENTATIONS AND WARRANTIES.  Borrower represents and warrants that:

2.1.

Immediately upon giving effect to this Amendment (i) the representations and warranties contained
in  the  Loan  Documents  are  true,  accurate  and  complete  in  all  material  respects  except  to  the  extent  such
representations  and  warranties  relate  to  an  earlier  date,  in  which  case  they  are  true  and  correct  in  all  material
respects as of such date (in all cases without duplication of any standard(s) of materiality contained in the Loan
Documents as to such representations and warranties) and (ii) no Event of Default has occurred and is continuing
with respect to which Borrower has not been notified in writing by Agent or Lender.

2.2.

Borrower has the corporate or other applicable company power and authority to execute and deliver

this Amendment and to perform its obligations under the Amended Loan Agreement.

2.3.

[Reserved.]

2.4.

The execution and delivery by Borrower of this Amendment and the performance by Borrower of
its obligations under the Amended Loan Agreement have been duly authorized by all necessary corporate or other
applicable company action on the part of Borrower.

2.5.

Subject  to  any  matters  which  are  set  out  as  qualifications  or  reservations  as  to  matters  of  law  of
general application in the legal opinions delivered to the Lender pursuant to Section 4, this Amendment has been
duly  executed  and  delivered  by  Borrower  and  is  the  binding  obligation  of  Borrower,  enforceable  against  it  in
accordance with its terms, except as such enforceability may be limited by bankruptcy, insolvency, reorganization,
liquidation,  moratorium  or  other  similar  laws  of  general  application  and  equitable  principles  relating  to  or
affecting creditors’ rights; and

2.6.

As  of  the  date  hereof,  it  has  no  defenses  against  the  obligations  to  pay  any  amounts  under  the
Secured  Obligations.    Borrower  acknowledges  that  each  of  Agent  and  Lender  has  acted  in  good  faith  and  has
conducted  in  a  commercially  reasonable  manner  its  relationships  with  Borrower  in  connection  with  this
Amendment and in connection with the Loan Documents.

Borrower understands and acknowledges that each of Agent and Lender is entering into this Amendment in reliance
upon, and in partial consideration for, the above representations and warranties, and agrees that such reliance is reasonable
and appropriate.

3.

LIMITATION.  The amendments set forth in this Amendment shall be limited precisely as written and shall not

be deemed (a) to be a waiver or modification of any other term or condition of the

2

Loan Agreement or of any other instrument or agreement referred to therein or to prejudice any right or remedy which Agent
and/or Lender may now have or may have in the future under or in connection with the Amended Loan Agreement or any
instrument or agreement referred to therein; or (b) to be a consent to any future amendment or modification or waiver to any
instrument  or  agreement  the  execution  and  delivery  of  which  is  consented  to  hereby,  or  to  any  waiver  of  any  of  the
provisions thereof.  Except as expressly amended hereby, the Loan Agreement shall continue in full force and effect.

4.

EFFECTIVENESS.    This  Amendment  shall  become  effective  upon  the  satisfaction  of  all  the  following

conditions precedent (the date of satisfaction of all such conditions precedent, the “Second Amendment Effective Date”):

4.1.
to Lender.

Amendment.  Obligors, Agent and Lender shall have duly executed and delivered this Amendment

4.2.

Certificates  of  Authority  and  Incumbency.    Each  Obligor  shall  have  delivered  to  Agent  a
certificate,  dated  the  Second  Amendment  Effective  Date  and  executed  by  the  secretary  or  equivalent  officer  of
such Obligor, with appropriate insertions and attachments, including:

4.2.1.
a  copy  of  its  respective  certificate  or  deed  of  incorporation  and  current  articles  of
association and bylaws, and for uniQure Bio an extract of its registration in the Trade Register of the
Dutch Chamber of Commerce;

4.2.2.
a  copy  of  resolutions  of  its  Board  and  general  meeting  of  shareholders  (to  the  extent
required)  evidencing  approval  of  (a)  this  Amendment  and  the  transactions  contemplated  thereby
including  the  2021  Term  Loan  Advances  and  (b)  other  transactions  evidenced  by  the  Loan
Documents;

4.2.3.
the names, titles, incumbency and signature specimens of those respective representatives of
such Obligor who have been authorized by such resolutions and/or written consents to execute Loan
Documents on behalf of such Person; and

4.2.4.
for  uniQure  US,  a  certificate  of  good  standing  from  its  state  of  incorporation  and  similar
certificates from all other jurisdictions in which such Borrower does business and where the failure
to be qualified would have a Material Adverse Effect.

4.3.

Searches. Agent shall have received the results of searches in Delaware, the District of Columbia
and Massachusetts with respect to the applicable Obligors, and such searches shall reveal no liens on any of the
assets of such Person except for Permitted Liens or Liens to be discharged on or prior to the Second Amendment
Effective Date (which liens shall be discharged pursuant to documentation reasonably satisfactory to Agent).

4.4.
certificate.

Perfection  Certification.    Each  Obligor  shall  have  delivered  to  Agent  an  updated  perfection

4.5.

Opinion Letters. Agent shall have received a legal opinion of Lender’s Dutch counsel.

3

4.6.

Advance Request. An Advance Request in respect of the 2021 Term Loan Advance to be requested
under  Section  2.1.2(a)(i)  of  the  Amended  Loan  Agreement  as  described  in  Section  4.2  of  the  Amended  Loan
Agreement.

4.7.

Facility Charge.  Borrower shall have paid to Agent a facility fee of three hundred fifty thousand

dollars ($350,000).

4.8.

Payment  of  Lender  Expenses.    Borrower  shall  have  paid  all  reasonable  and  invoiced  Lender
expenses (including all reasonable and invoiced attorneys’ fees and reasonable expenses) incurred through the date
of this Amendment.

5.

RELEASE.  In consideration of the agreements of Agent and each Lender contained herein and for other good
and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Borrower, on behalf of itself and
its successors, assigns, and other legal representatives, hereby to the extent possible under applicable law fully, absolutely,
unconditionally  and  irrevocably  releases,  remises  and  forever  discharges  Agent  and  each  Lender,  and  its  successors  and
assigns, and its present and former shareholders, affiliates, subsidiaries, divisions, predecessors, directors, officers, attorneys,
employees,  agents  and  other  representatives  (Agent,  Lenders  and  all  such  other  persons  being  hereinafter  referred  to
collectively as the “Releasees” and individually as a “Releasee”), of and from all demands, actions, causes of action, suits,
covenants, contracts, controversies, agreements, promises, sums of money, accounts, bills, reckonings, damages and any and
all  other  claims,  counterclaims,  defenses,  rights  of  set-off,  demands  and  liabilities  whatsoever  of  every  name  and  nature,
known or unknown, suspected or unsuspected, both at law and in equity, which Borrower, or any of its successors, assigns,
or other legal representatives may now or hereafter own, hold, have or claim to have against the Releasees or any of them
for, upon, or by reason of any circumstance, action, cause or thing whatsoever which arises at any time on or prior to the day
and date of this Amendment, for or on account of, or in relation to, or in any way in connection with the Loan Agreement, or
any of the other Loan Documents or transactions thereunder or related thereto.  Borrower understands, acknowledges and
agrees  that  the  release  set  forth  above  may  be  pleaded  as  a  full  and  complete  defense  and  may  be  used  as  a  basis  for  an
injunction  against  any  action,  suit  or  other  proceeding  which  may  be  instituted,  prosecuted  or  attempted  in  breach  of  the
provisions of such release.  Borrower agrees that no fact, event, circumstance, evidence or transaction which could now be
asserted or which may hereafter be discovered shall affect in any manner the final, absolute and unconditional nature of the
release set forth above.

6.

COUNTERPARTS.    This  Amendment  may  be  signed  in  any  number  of  counterparts,  and  by  different  parties
hereto  in  separate  counterparts,  with  the  same  effect  as  if  the  signatures  to  each  such  counterpart  were  upon  a  single
instrument.    All  counterparts  shall  be  deemed  an  original  of  this  Amendment.    This  Amendment  may  be  executed  by
facsimile, portable document format (.pdf) or similar technology signature, and such signature shall constitute an original for
all purposes.

7.

INCORPORATION BY REFERENCE.  The provisions of Section 10 (Miscellaneous) of the Loan Agreement shall

be deemed incorporated herein by reference, mutatis mutandis.

8.

LOAN DOCUMENTS.  This Amendment shall constitute a Loan Document.

[Remainder of this page intentionally left blank]

4

IN WITNESS WHEREOF, the parties have duly authorized and caused this Amendment to be executed as of the

date first written above.

BORROWER:

UNIQURE BIOPHARMA B.V.

Signature:

/s/ Christian Klemt

Print Name:

Christian Klemt

Title:

Chief Accounting Officer Director

UNIQURE, INC.

Signature:

/s/ Matt Kapusta

Print Name:

Matt Kapusta

Title:

Chief Executive Officer

OBLIGOR:

UNIQURE N.V. (formerly uniQure B.V.)

Signature:

/s/ Matt Kapusta

Print Name:

Matt Kapusta

Title:

Chief Executive Officer

UNIQURE IP B.V.

Signature:

/s/ Christian Klemt

Print Name:

Christian Klemt

Title:

Chief Accounting Officer Director

Signature Page to Amendment No. 2 to Loan and Security Agreement

Accepted in Palo Alto, California:

AGENT:

HERCULES CAPITAL, INC.

By:
Name:
Its:

/s/ [*]
[*]
[*]

LENDER:

HERCULES CAPITAL FUNDING TRUST 2018-1

By:
Name:
Its:

/s/ [*]
[*]
[*]

HERCULES CAPITAL FUNDING TRUST 2019-1

By:
Name:
Its:

/s/ [*]
[*]
[*]

HERCULES CAPITAL, INC.

By:
Name:
Its:

/s/ [*]
[*]
[*]

Signature Page to Amendment No. 2 to Loan and Security Agreement

EXHIBIT A

UNIQURE

SECOND AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT

THIS  SECOND  AMENDED  AND  RESTATED  LOAN  AND  SECURITY  AGREEMENT  is  made  and
dated as of May 6, 2016 and is entered into by and among (i) UNIQURE BIOPHARMA B.V., a private limited
liability  company  incorporated  and  existing  under  the  laws  of  the  Netherlands,  having  its  corporate  seat  at
Amsterdam,  the  Netherlands  and  registered  at  the  trade  register  of  the  Chamber  of  Commerce  for  Amsterdam
under  number  34275365  (“uniQure  Bio”),  (ii)  UNIQURE,  Inc.,  a  Delaware  corporation  (“US  Borrower”  and
together with uniQure Bio hereinafter collectively referred to as “Borrower”), (iii) UNIQURE IP B.V., a private
limited liability company incorporated and existing under the laws of the Netherlands, having its corporate seat at
Amsterdam,  the  Netherlands  and  registered  at  the  trade  register  of  the  Chamber  of  Commerce  for  Amsterdam
under  number  34275369  (“uniQure IP”),  (iv)  each  of  the  subsidiaries  of  uniQure  identified  on  the  Schedule  1
hereto and the signature pages hereof (“uniQure Subsidiaries”), (v) UNIQURE N.V. (formerly uniQure B.V.), a
public limited company incorporated and existing under the laws of the Netherlands, having its corporate seat at
Amsterdam,  the  Netherlands  and  registered  at  the  trade  register  of  the  Chamber  of  Commerce  for  Amsterdam
under  number  54385229  (“uniQure  Holdings”  and  together  with  uniQure  IP,  the  uniQure  Subsidiaries,  and
Borrower, the “Obligors”),  (vi)  the  several  banks  and  other  financial    institutions  or  entities  from  time  to  time
parties  to  this  Agreement  (collectively  referred  to  as  “Lender”),  and  (vii)  HERCULES  CAPITAL,  INC.,  a
Maryland corporation, in its capacity as administrative agent and collateral agent for itself and the Lender (and in
such capacity, the “Agent”), and as amended by (a) Amendment No. 1 to Second Amended and Restated Loan
and  Security  Agreement,  dated  as  of  the  First  Amendment  Closing  Date  (as  defined  below)  (the  “Amendment
No.  1”),  by  and  among  the  Obligors,  Agent  and  Lender  and  (b)  Amendment  No.  2  to  Second  Amended  and
Restated Loan and Security Agreement, dated as of the Second Amendment Closing Date (as defined below) (the
“Amendment  No.  2”),  by  and  among  the  Obligors,  Agent  and  Lender  (as  so  amended  and  as  may  be  further
amended,  restated,  amended  and  restated,  supplemented  or  otherwise  modified  from  time  to  time,  the
“Agreement”).

RECITALS

A.

WHEREAS, following the execution of this Agreement on May 6, 2016, the parties hereto entered
into Amendment No. 1 whereby Lender made available 2018 Term Loan Commitments in respect of a 2018 Term
A  Loan  Advance  and  a  2018  Term  B  Loan  Advance  (in  each  case  as  defined  below)  in  an  aggregate  principal
amount of up to Fifty Million Dollars ($50,000,000).

B.

WHEREAS, immediately prior to the Second Amendment Closing Date (as defined below), there
are  2018  Term  Loan  Advances  outstanding  hereunder  in  the  aggregate  principal  amount  of  Thirty-Five  Million
Dollars ($35,000,000) and Lender has not made any 2018 Term B Loan Advance to Borrower.

C.

WHEREAS,  Borrower  desires  to  obtain  additional  term  loan  commitments  in  an  aggregate
principal  amount  of  One  Hundred  Million  Dollars  ($100,000,000)  for  general  corporate  purposes  permitted
pursuant to the terms of this Agreement.

D.

WHEREAS, the parties hereto desire to further amend this Agreement upon the terms and subject
to  the  conditions  set  forth  herein  and  in  Amendment  No.  2  to  inter  alia  provide  for  such  additional  term  loan
commitments and to reduce the 2018 Term Loan Commitment to zero ($0).

NOW,  THEREFORE,  in  consideration  of  the  mutual  conditions  and  agreements  set  forth  in  this
Agreement  and  the  other  Loan  Documents  and  for  other  good  and  valuable  consideration,  the  receipt  and
sufficiency of which are hereby acknowledged, the parties hereto hereby agree as follows:

DEFINITIONS AND RULES OF CONSTRUCTION

Unless otherwise defined herein, the following capitalized terms shall have the following meanings:

“2018 End of Term Charge” shall have the meaning assigned to such term in Section 2.6.

“2018 Prepayment Charge” shall have the meaning assigned to such term in Section 2.4.

“2018 Term A Loan Advance” shall have the meaning assigned to such term in Section 2.1.1(a).

“2018 Term B Loan Advance” shall have the meaning assigned to such term in Section 2.1.1(a).

“2018 Term Commitment” means as to any Lender, the obligation of such Lender, if any, to make a 2018
Term Loan Advance to the Borrower in a principal amount not to exceed the amount set forth under the heading
“2018 Term Loan Advances” under the heading “Commitment” opposite such Lender’s name on Schedule 1.1.

“2018 Term Loan Advance” and “2018 Term Loan Advances” shall have the meaning assigned to such

terms in Section 2.1.1(a).

“2018  Term  Loan  Interest  Rate”  means  for  any  day,  a  floating  per  annum  rate  equal  to  the  greater  of
either  (a)  8.85%,  or  (b)  the  sum  of  (i)  8.85%,  plus  (ii)  the  Prime  Rate  minus  five  and  one  half  of  one  percent
(5.50%).

“2018 Term Loan Maturity Date” means June 1, 2023.

“2021 End of Term Charge” shall have the meaning assigned to such term in Section 2.6.

8

“2021 Term Commitment” means as to any Lender, the obligation of such Lender, if any, to make a 2021
Term Loan Advance to the Borrower in a principal amount not to exceed the amount set forth under the heading
“2021 Term Loan Advances” under the heading “Commitment” opposite such Lender’s name on Schedule 1.1.

“2021 Term Loan Advance” and “2021 Term Loan Advances” shall have the meaning assigned to such

terms in Section 2.1.2(a).

“2021  Term  Loan  Interest  Rate”  means  for  any  day,  a  floating  per  annum  rate  equal  to  the  greater  of
either (a) 8.25%, or (b) the sum of (i) 8.25%, plus (ii) the Prime Rate minus three and one quarter of one percent
(3.25%).

“2021 Term Loan Maturity Date” means June 1, 2023; provided, however, that if Borrower duly extends
the  2021  Term  Loan  Maturity  Date  pursuant  to  Section  2.1.2(e),  then  the  2021  Term  Loan  Maturity  Date  shall
mean June 1, 2024 or June 1, 2025, as applicable.

“Account Control Agreement(s)” means any agreement entered into by and among Agent, Borrower and
a third party bank or other institution (including a Securities Intermediary) in which Borrower maintains a Deposit
Account  or  an  account  holding  Investment  Property  and  which  grants  Agent  a  perfected  first  priority  security
interest in the subject account or accounts.

“Accounting Standards” means accounting principles used by uniQure Holdings in the preparation of its
consolidated  financial  statements  for  U.S.  Securities  Exchange  Commission  filings,  being  IFRS  or  GAAP,  as
applicable.

“ACH  Authorization”  means  the  ACH  Debit  Authorization  Agreement  in  substantially  the  form  of

Exhibit H.

“Advance” means a Term Loan Advance, a 2018 Term Loan Advance or a 2021 Term Loan Advance.

“Advance Date” means the funding date of an Advance.

“Advance Request” means a request for an Advance submitted by a Borrower to Lender in substantially

the form of Exhibit A.

“Affiliate” means (a) any Person that directly or indirectly controls, is controlled by, or is under common
control  with  the  Person  in  question,  (b)  any  Person  directly  or  indirectly  owning,  controlling  or  holding  with
power to vote twenty percent (20%) or more of the outstanding voting securities of another Person, (c) any Person
twenty percent (20%) or more of whose outstanding voting securities are directly or indirectly owned, controlled
or held by another Person with power to vote such securities, or (d) any Person related by blood or marriage to
any Person described in subsection (a), (b) or (c) of this paragraph.  As used in the definition of “Affiliate,” the
term  “control”  means  the  possession,  directly  or  indirectly,  of  the  power  to  direct  or  cause  the  direction  of  the
management and policies of a Person, whether through ownership of voting securities, by contract or otherwise.

“Agreement” has the meaning given to it in the preamble to this Agreement.

9

“Amendment No. 1” has the meaning given to it in the preamble to this Agreement.

“Amendment No. 2” has the meaning given to it in the preamble to this Agreement.

“Anti-Corruption  Laws”  shall  mean  all  laws,  rules,  and  regulations  of  any  jurisdiction  applicable  to
Borrower  or  any  of  its  Affiliates  from  time  to  time  concerning  or  relating  to  bribery  or  corruption,  including
without limitation the United States Foreign Corrupt Practices Act of 1977, as amended, the UK Bribery Act 2010
and other similar legislation in any other jurisdictions.

“Anti-Terrorism  Laws”  means  any  laws,  rules,  regulations  or  orders  relating  to  terrorism  or  money
laundering,  including  without  limitation  Executive  Order  No.  13224  (effective  September  24,  2001),  the  USA
PATRIOT Act, the laws comprising or implementing the Bank Secrecy Act, and the laws administered by OFAC.

“Assignee” has the meaning given to it in Section 11.12.

“Blocked Person” means any Person:  (a) listed in the annex to, or is otherwise subject to the provisions
of, Executive Order No. 13224, (b) a Person owned or controlled by, or acting for or on behalf of, any Person that
is listed in the annex to, or is otherwise subject to the provisions of, Executive Order No. 13224, (c) a Person with
which any Lender is prohibited from dealing or otherwise engaging in any transaction by any Anti-Terrorism Law,
(d) a Person that commits, threatens or conspires to commit or supports “terrorism” as defined in Executive Order
No. 13224, or (e) a Person that is named a “specially designated national” or “blocked person” on the most current
list published by OFAC or other similar list.

“Board” means the supervisory board or the single board of directors of uniQure Holdings in place from

time to time.

“Borrower  Products”  means  all  products,  software,  service  offerings,  technical  data  or  technology
currently  being  designed,  manufactured  or  sold  by  Borrower  or  which  Borrower    intends  to  sell,  license,  or
distribute in the future including any products or service offerings under development, collectively, together with
all products, software, service offerings, technical data or technology that have been sold, licensed or distributed
by Borrower since its incorporation.

“Business Day” is any day other than a Saturday or Sunday, a day on which Lender is closed or a day on

which banks are closed for general business in the Netherlands.

“Cash” means all cash and liquid funds.

“Change in Control”  means any (i) reorganization,  recapitalization,  consolidation  or  merger  (or  similar
transaction  or  series  of  related  transactions)  of  uniQure  Holdings  or  Borrower  sale  or  exchange  of  outstanding
shares  (or  similar  transaction  or  series  of  related  transactions)  of  uniQure  Holdings’  or  Borrower’s  outstanding
shares immediately before consummation of such transaction or series of related transactions do not, immediately
after consummation of such transaction or series of related transactions, retain shares representing more than fifty
percent (50%) of the voting power of the surviving entity of such transaction or series of related

10

transactions (or the parent of such surviving entity if such surviving entity is wholly owned by such parent), in
each case without regard to whether uniQure Holdings or Borrower is the surviving entity, or (ii) sale or issuance
by  uniQure  Holdings  or  Borrower  of  new  shares  of  Preferred  Securities  of  uniQure  Holdings  or  Borrower  to
investors,  none  of  whom  are  current  investors  in  uniQure  Holdings  or  Borrower,  and  such  new  Preferred
Securities are senior to all existing Preferred Securities and ordinary shares or common stock of uniQure Holdings
or  Borrower,  as  applicable,  with  respect  to  liquidation  preferences,  and  the  aggregate  liquidation  preference  of
such new Preferred Securities is more than fifty percent (50%) of the aggregate liquidation preference of all shares
of Preferred Securities of uniQure Holdings or Borrower, as applicable.

“Collateral” means the property described in Section 3.

“Collateral Documents” means the security documents described in Section 3.

“Commitment”  means  as  to  any  Lender,  such  Lender’s  2018  Term  Commitment  or  2021  Term

Commitment, as the case may be.

“Confidential Information” has the meaning given to it in Section 10.11.

“Contingent Obligation”  means,  as  applied  to  any  Person,  any  direct  or  indirect  liability,  contingent  or
otherwise, of that Person with respect to (i) any indebtedness, lease, dividend, letter of credit or other obligation of
another, including any such obligation directly or indirectly guaranteed, endorsed, co-made or discounted or sold
with recourse by that Person, or in respect of which that Person is otherwise directly or indirectly liable; (ii) any
obligations  with  respect  to  undrawn  letters  of  credit,  corporate  credit  cards  or  merchant  services  issued  for  the
account  of  that  Person;  and  (iii)  all  obligations  arising  under  any  interest  rate,  currency  or  commodity  swap
agreement,  interest  rate  cap  agreement,  interest  rate  collar  agreement,  or  other  agreement  or  arrangement
designated to protect a Person against fluctuation in interest rates, currency exchange rates or commodity prices;
provided, however, that the term “Contingent Obligation” shall not include endorsements for collection or deposit
in the ordinary course of business.  The amount of any Contingent Obligation shall be deemed to be an amount
equal to the stated or determined amount of the primary obligation in respect of which such Contingent Obligation
is  made  or,  if  not  stated  or  determinable,  the  maximum  reasonably  anticipated  liability  in  respect  thereof  as
determined by such Person in good faith; provided, however, that such amount shall not in any event exceed the
maximum amount of the obligations under the guarantee or other support arrangement.

“continuing” means, with respect to an Event of Default, an Event of Default that has not been remedied

or waived.

“Copyright License” means any written agreement granting any right to use any Copyright or Copyright
registration, now owned or hereafter acquired by Borrower or in which Borrower now holds or hereafter acquires
any interest.

“Copyrights” means all copyrights, whether registered or unregistered, held by the Borrower pursuant to

the laws of the Netherlands, or of any other country.

11

“CSL Licenses” is defined in the definition of “Permitted Liens”.

“Deposit Accounts” means any “deposit accounts,” including any checking account, savings account, or

certificate of deposit and any deposit account as defined in the UCC.

“End of Term Charge” means collectively, the charges set forth in Sections 2.5 and 2.6.

“Equity  Interests”  means,  with  respect  to  any  Person,  the  capital  stock,  partnership  or  limited  liability

company interest, or other equity securities or equity ownership interests of such Person.

“Event of Default” has the meaning given to it in Section 8.

“Existing 2021 Term Loan Maturity Date” has the meaning given to it in Section 2.1.2(e).

“Existing Loan and Security Agreement” means that certain Amended and Restated Loan and Security
Agreement dated as of June 26, 2014 (as the same may have been amended, modified, supplemented or restated
and in effect from time to time).

“Extera Judgment” means any settlement or judgment in connection with the currently pending dispute
with Extera Partners so long as such settlement or judgment is limited to monetary damages and does not exceed
$15,000,000 in the aggregate and no payment is made if an Event of Default has occurred and is continuing.

“Facility Charge” means one and one-quarter of one percent (1.25%) of the original principal amount of

the Term Loan advanced on the Original Closing Date.

“Financial Statements” has the meaning given to it in Section 7.1.

“First Amendment Closing Date” means December 6, 2018.

“Funding Documents” means the following: (i) a certificate of good standing for US Borrower from its
state of incorporation and from all other US jurisdictions in which it does business to the extent that the failure to
be qualified to do business would have a Material Adverse Effect and for uniQure Bio an extract of its registration
in the Trade Register of the Dutch Chamber of Commerce, a copy of the deed of incorporation and, if amended
after incorporation, the articles of association currently in force and effect; (ii) completed Schedules and Exhibits
to this Agreement; (iii) executed originals of the following: (x) the Account Control Agreements, and any other
documents executed in connection with the Secured Obligations or the transactions contemplated hereby, as the
same may from time to time be amended, modified, supplemented or restated and (y) the Perfection Certificate;
(iv)  legal  opinion  of  Lender’s  counsel;  (v)  the  insurance  policies  and/or  endorsements  required  pursuant  to
Section 6.1 hereof; (vi) documents, releases, terminations, and other instruments as may be necessary or proper to
 release any creditor’s Lien in the Intellectual Property of Borrower including, without limitation, UCC financing
statement amendments and appropriate filings with any appropriate register or authority in any jurisdiction; and
(vii)  and  all  other  documents  and  instruments  reasonably  required  by  Lender  to  effectuate  the  transactions
contemplated hereby or to create and perfect the

12

Liens of Lender with respect to all Collateral, in all cases in form and substance reasonably acceptable to Lender.

“GAAP” means generally accepted accounting principles in the United States of America.

“IFRS” are the International Financial Reporting Standards, a collection of guidelines and rules set by the
International Accounting Standards Board (www.iasb.org) which are applicable to the circumstances as of the date
of determination.

“Indebtedness” means indebtedness of any kind, including (a) all indebtedness for borrowed money or the
deferred  purchase  price  of  property  or  services  (excluding  trade  credit  entered  into  in  the  ordinary  course  of
business due within sixty (60) days), including reimbursement and other obligations with respect to surety bonds
and letters of credit, (b) all obligations evidenced by notes, bonds, debentures or similar instruments, (c) all capital
lease obligations (as such term is understood under GAAP), and (d) all Contingent Obligations.

“Insolvency Proceeding” is any proceeding by or against any Person under the Dutch Bankruptcy Act, or
any  other  bankruptcy  or  insolvency  law,  including  assignments  for  the  benefit  of  creditors,  compositions,
extensions generally with its creditors, or proceedings seeking reorganization, arrangement, or other relief.

“Intellectual  Property”  means  any  and  all  intellectual  property  rights  in  any  country  or  jurisdiction,
including  but  not  limited  to  all  of  Borrower’s  Copyrights;  Trademarks;  Patents;  Licenses;  trade  secrets  and
inventions; mask works, utility models, layout-designs (topographies) of integrated circuits, know-how, industrial
designs, neighboring rights, database rights or other rights in compilations of data, trade names, internet domain
names,  plant  variety  rights  and  any  and  all  rights  of  a  similar  nature,  either  (i)  now  known,  contemplated  or
unforeseen,  (ii)  having  a  statutory  basis  or  existing  under  equity,  common  law  or  otherwise,  or  (iii)  registered,
deposited, filed or not, and including any and all rights in connection with applications for or rights to apply for or
acquire any and all of such rights.

“Intra-Group Loans” means the liabilities owed by any Obligor to any other Obligor.

“Investment” means any beneficial ownership (including stock, partnership or limited liability company
interests) of or in any Person, or any loan, advance or capital contribution to any Person or the acquisition of all,
or substantially all, of the assets of another Person,

“Joinder  Agreements”  means  for  each  Subsidiary,  a  completed  and  executed  Joinder  Agreement  in

substantially the form attached hereto as Exhibit G.

“Leasehold Financing” means any financing entered into by Borrower in respect of improvements of its

facilities and/or financed equipment in any location in an aggregate amount of up to $10,000,000.

“Lender” has the meaning given to it in the preamble to this Agreement.

13

“License” means any Copyright License, Patent License, Trademark License or other license of rights or

interests.

“Lien”  means  any  mortgage,  deed  of  trust,  pledge,  hypothecation,  assignment  for  security,  security
interest, encumbrance, levy, lien or charge of any kind, whether voluntarily incurred or arising by operation of law
or  otherwise,  against  any  property,  any  conditional  sale  or  other  title  retention  agreement,  and  any  lease  in  the
nature of a security interest.

“Loan  Documents”  means  this  Agreement,  the  Notes  (if  any),  the  ACH  Authorization,  the  Account
Control  Agreements,  any  reaffirmations,  the  Joinder  Agreements,  all  UCC  Financing  Statements,  the  Warrant
Agreement,  any  intellectual  property  security  agreement,  and  any  other  documents  executed  in  connection  with
the Secured Obligations or the transactions contemplated hereby, as the same may from time to time be amended,
modified, supplemented or restated.

“Material Adverse Effect” means a material adverse effect upon: (i) the business, operations, properties,
assets or condition (financial or otherwise) of the Obligors, taken as a whole, other than in and of itself (x) the
expenditure of cash in the ordinary course, or (y) adverse results of a preclinical or clinical trial or program or the
denial, delay or limitation of approval of, or taking of any other regulatory action by, the United States Food and
Drug  Administration  or  any  other  governmental  entity  with  respect  to  any  biologic  product  or  drug;  or  (ii)  the
ability  of  an  Obligor  to  perform  the  Secured  Obligations  when  due  in  accordance  with  the  terms  of  the  Loan
Documents,  or  the  ability  of  Lender  to  enforce  any  of  its  rights  or  remedies  with  respect  to  the  Secured
Obligations; or (iii) the Collateral or Lender’s Liens on the Collateral or the priority of such Liens.

“Maximum  2021  Term  Loan  Amount”  means  an  aggregate  principal  amount  of  up  to  One  Hundred

Million Dollars ($100,000,000).

“Maximum Rate” shall have the meaning assigned to such term in Section 2.2.

“Note(s)” means a promissory note or promissory notes to evidence an Advance made by a Lender.

“OFAC” is the U.S. Department of Treasury Office of Foreign Assets Control.

“OFAC Lists” are, collectively, the Specially Designated Nationals and Blocked Persons List maintained
by OFAC pursuant to Executive Order No. 13224, 66 Fed. Reg. 49079 (Sept. 25, 2001) and/or any other list of
terrorists or other restricted Persons maintained pursuant to any of the rules and regulations of OFAC or pursuant
to any other applicable Executive Orders.

“Ordinary Shares” means the Ordinary Shares, €1 par value per share, of uniQure Bio.

“Original Closing Date” means June 13, 2013.

“Original Term Loan Advances” has the meaning given to it in Section 2.1.1(a).

14

“Patent License” means any written agreement granting any right with respect to any invention on which
a Patent is in existence or a Patent application is pending, in which agreement Borrower now holds or hereafter
acquires any interest.

“Patents”  means  any  patent  in  the  Netherlands  or  in  any  other  country,  all  registrations  and  recordings
thereof,  and  all  applications  for  patents  of,  or  rights  corresponding  thereto,  in  the  Netherlands  or  any  other
country.

“Permitted Convertible Debt” means Indebtedness of Borrower consisting of one or more series of notes
and notes issued in exchange therefor, that are in each case convertible into Ordinary Shares (or other securities or
property following a merger event or other change of the Ordinary Shares), or cash or any combination of cash
and  Ordinary  Shares;  provided,  however,  that  such  Indebtedness  shall  (a)  be  either  unsecured  or  Subordinated
Indebtedness, (b) not require any mandatory redemption, prepayment, repurchase, “put”, “call”, or conversion for
cash  prior  to  stated  maturity  other  than  any  customary  provision  requiring  an  offer  to  purchase  such  notes  as  a
result of a “change of control”, fundamental change, delisting or termination of trading or similar provision, (c)
mature  after,  and  not  require  any  scheduled  amortization  or  other  scheduled  payments  of  principal  prior  to,  the
date that is 181 days after the latest 2021 Term Loan Maturity Date (after giving effect to all possible extensions
thereof under Section 2.1.2(e)), and (d) not be guaranteed by any Subsidiary of Borrower.

“Permitted  Indebtedness”  means:  (i)  Indebtedness  of  Borrower  in  favor  of  Lender  arising  under  this
Agreement or any other Loan Document; (ii) Indebtedness existing on the Restatement Date which is disclosed in
Schedule  1A;  (iii)  Indebtedness  of  up  to  $250,000  outstanding  at  any  time  secured  by  a  Lien  described  in
clause (vii) of the defined term “Permitted Liens,” provided such Indebtedness does not exceed the lesser of the
cost or fair market value of the equipment financed with such Indebtedness; (iv) Indebtedness to trade creditors
incurred  in  the  ordinary  course  of  business,  including  Indebtedness  incurred  in  the  ordinary  course  of  business
with  corporate  credit  cards;  (v)  Indebtedness  that  also  constitutes  a  Permitted  Investment;  (vi)  Subordinated
Indebtedness; (vii) reimbursement obligations in connection with letters of credit that are secured by cash or cash
equivalents and issued on behalf of the Borrower or a Subsidiary thereof in an amount not to exceed $200,000 at
any time outstanding, (viii) the Leasehold Financing; (ix) any contingent consideration payable in connection with
the acquisition of InoCard in an amount not to exceed €15,000,000 in accordance with the term of the Sale and
Purchase  Agreement  dated  as  of  July  15,  2014  by  any  among  Prof.    Hugo  Katus,  Prof.    Patrick  Most,  uniQure
Holdings and uniQure Bio (as amended from time to time) (provided however, no cash payments may be made if
an  Event  of  Default  has  occurred  and  is  continuing);  (x)  any  operating  leases;  (xi)  any  Intra-Group  Loans;
(xii)  any  liability  arising  pursuant  to  any  guarantee  in  the  form  of  a  declaration  of  joint  and  several  liability
(hoofdelijke aansprakelijkheid) as referred to in article 2:403 Dutch civil code in respect of a member of the group
and  any  residual  liability  with  respect  to  such  declaration  arising  pursuant  to  article  2:404  Dutch  civil  code;
(xiii)  any  joint  and  several  liability  arising  as  a  result  of  (the  establishment)  of  a  fiscal  unity  (fiscale  eenheid)
between members of the group incorporated in the Netherlands; (xiv) Permitted Convertible Debt not to exceed
Five Hundred Million Dollars ($500,000,000) in aggregate principal amount at any time outstanding; (xv) other
Indebtedness  in  an  aggregate  amount  not  to  exceed  $100,000  at  any  time  outstanding,  and  (xvi)  extensions,
refinancings and renewals of any items of Permitted Indebtedness, provided that the principal amount is not

15

increased or the terms modified to impose materially more burdensome terms upon Borrower or its Subsidiary, as
the case may be.

“Permitted Investment” means: (i) Investments existing on the Restatement Date which are disclosed in
Schedule  1B;  (ii)  (a)  marketable  direct  obligations  issued  or  unconditionally  guaranteed  by  any  agency  or  any
country thereof maturing within two-years from the date of acquisition thereof, (b) commercial paper maturing no
more than two-years from the date of creation thereof and currently having a rating of at least A-2 or P-2 from
either Standard & Poor’s Corporation or Moody’s Investors Service, (c) certificates of deposit issued by any bank
with  assets  of  at  least  $500,000,000  maturing  no  more  than  two-years  from  the  date  of  investment  therein,  and
(d)  money  market  accounts;  (iii)  repurchases  of  stock  from  former  employees,  directors,  or  consultants  of
Borrower under the terms of applicable repurchase agreements at the original issuance price of such securities in
an aggregate amount not to exceed $500,000 in any fiscal year, provided that no Event of Default has occurred, is
continuing  or  would  exist  after  giving  effect  to  the  repurchases;  (iv)  Investments  accepted  in  connection  with
Permitted Transfers; (v) Investments (including debt obligations) received in connection with the bankruptcy or
reorganization of customers or suppliers and in settlement of delinquent obligations of; and other disputes with,
customers or suppliers arising in the ordinary course of Borrower’s business; (vi) Investments consisting of notes
receivable of, or prepaid royalties and other credit extensions, to customers and suppliers who are not affiliates, in
the ordinary course of business, provided that this subparagraph (vi) shall not apply to Investments of Borrower in
any  Subsidiary;  (vii)  Investments  consisting  of  loans  not  involving  the  net  transfer  on  a  substantially
contemporaneous  basis  of  cash  proceeds  to  employees,  officers  or  directors  relating  to  the  purchase  of  capital
stock of Borrower pursuant to employee stock purchase plans or other similar agreements approved by the Board;
(viii)  Investments  consisting  of  employee  travel  advances,  employee  relocation  loans  and  other  employee  loans
and advances in the ordinary course of business; (ix) Investments in newly-formed Subsidiaries organized in the
Netherlands or any other country, provided that such Subsidiaries enter into a Joinder Agreement promptly after
their  formation  by  Borrower  and  execute  such  other  documents  as  shall  be  reasonably  requested  by  Lender;
(x)  joint  ventures  or  strategic  alliances  in  the  ordinary  course  of  Borrower’s  business  consisting  of  the
nonexclusive  licensing  of  technology,  the  development  of  technology  or  the  providing  of  technical  support;
(xi) any Intra-Group Loans; and (xii) other Investments that do not exceed $1,000,000 in the aggregate.

“Permitted Liens” means any and all of the following: (i) Liens in favor of Lender; (ii) Liens existing on
the Second Amendment Closing Date which are disclosed in Schedule 1C; (iii) Liens for taxes, fees, assessments
or  other  governmental  charges  or  levies,  either  not  delinquent  or  being  contested  in  good  faith  by  appropriate
proceedings;  provided,  that  Borrower  maintains  adequate  reserves  therefor  in  accordance  with  Accounting
Standards;  (iv)  Liens  securing  claims  or  demands  of  materialmen,  artisans,  mechanics,  carriers,  warehousemen,
landlords and other like Persons arising in the ordinary course of Borrower’s business and imposed without action
of such parties; provided, that the payment thereof is not yet required; (v) Liens arising from judgments, decrees
or  attachments  in  circumstances  which  do  not  constitute  an  Event  of  Default  hereunder;  (vi)  the  following
deposits,  to  the  extent  made  in  the  ordinary  course  of  business:  deposits  under  worker’s  compensation,
unemployment insurance, social security and other similar laws, or to secure the performance of bids, tenders or
contracts (other than for the repayment of borrowed money) or to secure indemnity, performance or other

16

similar bonds for the performance of bids, tenders or contracts (other than for the repayment of borrowed money)
or to secure statutory obligations (other than liens arising under environmental liens) or surety or appeal bonds, or
to secure indemnity, performance or other similar bonds; (vii) Liens on equipment or software or other intellectual
property  constituting  purchase  money  liens  and  liens  in  connection  with  capital  leases  securing  Indebtedness
permitted  in  clause  (iii)  of  “Permitted  Indebtedness”;  (viii)  Liens  incurred  in  connection  with  Subordinated
Indebtedness; (ix) leasehold interests in leases or subleases and licenses granted in the ordinary course of business
and  not  interfering  in  any  material  respect  with  the  business  of  the  licensor;  (x)  Liens  in  favor  of  customs  and
revenue  authorities  arising  as  a  matter  of  law  to  secure  payment  of  custom  duties  that  are  promptly  paid  on  or
before  the  date  they  become  due;  (xi)  Liens  on  insurance  proceeds  securing  the  payment  of  financed  insurance
premiums that are promptly paid on or before the date they become due (provided that such Liens extend only to
such insurance proceeds and not to any other property or assets); (xii) statutory and common law rights of set-off
and other similar rights as to deposits of cash and securities in favor of banks, other depository institutions and
brokerage firms and any Lien, netting or set-off arrangement granted or entered into by any Obligor under or in
connection with the ordinary banking arrangements of such Obligor as a result of the applicable general terms and
conditions of the relevant account bank where the Obligor maintains a bank account (including, in respect of an
account  bank  in  the  Netherlands,  the  general  banking  terms  and  conditions  (algemene  bankvoorwaarden));
(xiii) easements, zoning restrictions, rights-of-way and similar encumbrances on real property imposed by law or
arising in the ordinary course of business so long as they do not materially impair the value or marketability of the
related property; (xiv) Liens on cash or cash equivalents securing obligations permitted under clause (vii) of the
definition of Permitted Indebtedness; (xv) Liens incurred in connection with the Leasehold Financing which are
limited  to  the  improvements  and  equipment  financed  in  respect  of  Borrower’s  property  located  thereon;
(xvi)  licenses  granted  by  Borrower  or  its  affiliates  pursuant  to  the  terms  of  that  certain  Commercialization  and
License Agreement, dated June 24, 2020, by and between uniQure Bio and CSL Berhing LLC, as amended and in
effect  from  time  to  time  (the  “CSL  Licenses”);  and  (xvii)  Liens  incurred  in  connection  with  the  extension,
renewal or refinancing of the indebtedness secured by Liens of the type described in clauses (i) through (xi) and
(xv) above; provided, that any extension, renewal or replacement Lien shall be limited to the property encumbered
by the existing Lien and the principal amount of the indebtedness being extended, renewed or refinanced (as may
have been reduced by any payment thereon) does not increase.

“Permitted  Transfers”  means  (i)  sales  of  inventory  in  the  normal  course  of  business;  (ii)  exclusive
licenses and similar arrangements for the use of Intellectual Property in the ordinary course of business that could
not  result  in  a  legal  transfer  of  title  of  the  licensed  property;  (iii)  dispositions  of  worn-out,  obsolete  or  surplus
equipment  that  is,  in  the  reasonable  judgment  of  Borrower,  no  longer  economically  practicable  to  maintain  or
useful in the ordinary course of business of Borrower; (iv) other Transfers of assets having a fair market value of
not  more  than  $250,000  in  the  aggregate  in  any  fiscal  year;  (v)  the  entering  into  of  commercialization,  co-
development or license agreements with development or collaboration partners in the ordinary course of business;
and (vi) the CSL Licenses.

“Person”  means  any  individual,  sole  proprietorship,  partnership,  joint  venture,  trust,  unincorporated

organization, association, corporation, limited liability company, institution, other entity or government.

17

“Preferred Securities” means at any given time any equity issued by uniQure Holdings or Borrowers, as
applicable, that has any rights, preferences or privileges senior to uniQure Holdings’ or Borrower’ ordinary shares
or common stock, as applicable.

“Prime Rate” means the “prime rate” as reported in The Wall Street Journal, and if not reported, then the

prime rate most recently reported in The Wall Street Journal.

“Restatement Date” shall mean May 6, 2016.

“Sanctioned Country” shall mean, at any time, a country or territory which is the subject or target of any

Sanctions.

“Sanctioned  Person”  shall  mean,  at  any  time,  (a)  any  Person  listed  in  any  Sanctions-related  list  of
designated Persons maintained by the Office of Foreign Assets Control of the U.S. Department of the Treasury or
the U.S. Department of State, or by the United Nations Security Council, the European Union or any EU member
state, (b) any Person operating, organized or resident in a Sanctioned Country or (c) any Person controlled by any
such Person.

“Sanctions”  shall  mean  economic  or  financial  sanctions  or  trade  embargoes  imposed,  administered  or
enforced  from  time  to  time  by  (a)  the  U.S.  government,  including  those  administered  by  the  Office  of  Foreign
Assets Control of the U.S. Department of the Treasury or the U.S. Department of State, or (b) the United Nations
Security Council, the European Union or Her Majesty’s Treasury of the United Kingdom.

“Second Advance End of Term Charge” is defined in Section 2.6.

“Second Amendment Closing Date” means January 29, 2021.

“Secured  Obligations”  means  Borrower’s  obligations  under  this  Agreement  and  any  Loan  Document,

including any obligation to pay any amount now owing or later arising.

“Subordinated Indebtedness”  means  Indebtedness  subordinated  to  the  Secured  Obligations  in  amounts

and on terms and conditions satisfactory to Lender in its sole discretion.

“Subsequent  Financing”  means  any  equity  financing  involving  the  sale  and  issuance  of  Borrower’s
Equity  Interests  that  is  broadly  marketed  to  multiple  investors  and  consummated  after  the  Second  Amendment
Closing Date, provided, however, that in no event shall the sale and issuance of Borrower’s Equity Interests in any
“at-the-market offering” (as defined in Rule 415 promulgated under the Securities Act of 1933, as amended) be
deemed a “Subsequent Financing”.

“Subsidiary” means an entity, whether corporate, partnership, limited liability company, joint venture or
otherwise,  in  which  uniQure  Holdings  owns  or  controls  directly  or  indirectly  50%  or  more  of  the  outstanding
voting securities, including each entity listed on Schedule 1 hereto.

18

“Term Loan” shall mean the term loans in an aggregate principal amount of up to Fifty Million Dollars

($50,000,000) made available under this Agreement as described in Section 2.1.1.

“Term  Loan  Advance”  means  an  advance  of  a  Term  Loan  by  a  Lender  to  Borrower  pursuant  to  this

Agreement.

“Term Loan Maturity Date” means May 1, 2020.

“Third  Advance  Facility  Charge”  means  0.75%  of  the  original  principal  amount  of  the  aggregate

principal amount of the Term Loans advanced pursuant to the Loan Documents.

“Trademark  License”  means  any  written  agreement  granting  any  right  to  use  any  Trademark  or
Trademark  registration,  now  owned  or  hereafter  acquired  by  Borrower  or  in  which  Borrower  now  holds  or
hereafter acquires any interest.

“Trademarks”  means  all  trademarks  (registered,  common  law  or  otherwise)  and  any  applications  in
connection  therewith,  including  registrations,  recordings  and  applications  with  any  appropriate  register  or
authority in any jurisdiction.

“UCC” means the Uniform Commercial Code as the same is, from time to time, in effect in the State of
California; provided, that in the event that, by reason of mandatory provisions of law, any or all of the attachment,
perfection or priority of, or remedies with respect to, Lender’s Lien on any Collateral is governed by the Uniform
Commercial Code as the same is, from time to time, in effect in a jurisdiction other than the State of California,
then  the  term  “UCC”  shall  mean  the  Uniform  Commercial  Code  as  in  effect,  from  time  to  time,  in  such  other
jurisdiction  solely  for  purposes  of  the  provisions  thereof  relating  to  such  attachment,  perfection,  priority  or
remedies and for purposes of definitions related to such provisions.

“Warrant Agreement”  means  the  Warrant  Agreement  dated  as  of  September  20,  2013  by  and  between

uniQure Holdings and Hercules Capital, Inc. (formerly known as Hercules Technology Growth Capital, Inc.).

Unless  otherwise  specified,  all  references  in  this  Agreement  or  any  Annex  or  Schedule  hereto  to  a
“Section,” “subsection,” “Exhibit,” “Annex,” or “Schedule” shall refer to the corresponding Section, subsection,
Exhibit,  Annex,  or  Schedule  in  or  to  this  Agreement.    Unless  otherwise  specifically  provided  herein,  any
accounting term used in this Agreement or the other Loan Documents shall have the meaning customarily given
such term in accordance with Accounting Standards, and all financial computations hereunder shall be computed
in accordance with Accounting Standards, consistently applied.  Unless otherwise defined herein or in the other
Loan Documents, terms that are used herein or in the other Loan Documents and defined in the UCC shall have
the meanings given to them in the UCC.

THE LOANS

Reserved.

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2018 Term Loan.

(a)

First Amendment Closing Date.  Pursuant to the transactions described in this Agreement as 

amended by Amendment No. 1, on the First Amendment Closing Date, Twenty Million Dollars ($20,000,000) of 
the principal amount of the Original Term Loan Advances was deemed to constitute and refer to, and was 
converted into, the 2018 Term A Loan Advance hereunder, without constituting a novation. Such conversion of 
the Original Term Loan Advances into the 2018 Term A Loan Advance hereunder was deemed an Advance on the 
First Amendment Closing Date for purposes of this Agreement. In furtherance thereof, the Lenders severally (and 
not jointly) made, in an amount not exceeding their respective 2018 Term Commitment as in effect on the First 
Amendment Closing Date, and Borrower agreed to draw, one (1) 2018 Term Loan Advance in an aggregate 
principal amount of Thirty-Five Million Dollars ($35,000,000) (inclusive of the Original Term Loan Advances) on 
the First Amendment Closing Date (the “2018 Term A Loan Advance”).  Furthermore, pursuant to the 
transactions described in this Agreement as amended by Amendment No. 1, on the First Amendment Closing 
Date, Lender provided severally (and not jointly) its respective 2018 Term Commitment to make one (1) 2018 
Term Loan Advance in a principal amount of Fifteen Million Dollars ($15,000,000) (the “2018 Term B Loan 
Advance”, and together with the 2018 Term A Loan Advance, the “2018 Term Loan Advances”).

Outstanding Principal Amount; Termination of Commitments.  The parties hereto acknowledge and
agree that as of the Second Amendment Closing Date: (i) Lender has not made any 2018 Term B Loan Advance to
Borrower, (ii) the aggregate outstanding principal amount of the 2018 Term Loan Advances is Thirty-Five Million
Dollars ($35,000,000) and (iii) Borrower shall not be permitted to draw, and Lender shall not make, any further
2018 Term Loan Advances.

Interest.  The principal balance of each 2018 Term Loan Advance shall bear interest thereon from
such  Advance  Date  at  the  2018  Term  Loan  Interest  Rate  based  on  a  year  consisting  of  360  days,  with  interest
computed  daily  based  on  the  actual  number  of  days  elapsed.   The  2018  Term  Loan  Interest  Rate  will  float  and
change on the day the Prime Rate changes from time to time.

Payment.  Borrower will pay interest on each 2018 Term Loan Advance on the first (1st) Business
Day of each month, beginning the month after the Advance Date.  The entire 2018 Term Loan Advances principal
balance and all accrued but unpaid interest thereon hereunder, shall be due and payable on the 2018 Term Loan
Maturity Date. Borrower shall make all payments under this Agreement without setoff, recoupment or deduction
and  regardless  of  any  counterclaim  or  defense.  Lender  will  initiate  debit  entries  to  the  Borrower’s  account  as
authorized on the ACH Authorization on each payment date of all periodic obligations payable to Lender under
each 2018 Term Loan Advance.  Once repaid, the 2018 Term Loan Advances or any portion thereof may not be
reborrowed.

1.1.2 2021 Term Loan.

(a)

2021 Term Loan Advances. Subject to the terms and conditions of this Agreement, the

Lenders agree severally (and not jointly) to make, in an amount not to exceed

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their respective 2021 Term Commitment, at the Borrower’s request in accordance with clause (b) below, (i) one 
(1) term loan in an aggregate principal amount of Thirty-Five Million Dollars ($35,000,000) on the Second 
Amendment Closing Date and (ii) after the Second Amendment Closing Date but on or prior to December 15, 
2021, additional term loans in an aggregate principal amount not to exceed Sixty-Five Million Dollars 
($65,000,000) (each advance of the term loans referred to in Section 2.1.2(a)(i) or (ii), a “2021 Term Loan 
Advance” and collectively, the “2021 Term Loan Advances”).  The amount of any proposed 2021 Term Loan 
Advance pursuant to Section 2.1.2(a)(ii) must be a minimum amount of Twenty Million Dollars ($20,000,000).  
Only one 2021 Term Loan Advance may be requested in each Advance Request and the aggregate outstanding 
2021 Term Loan Advances shall not exceed the Maximum 2021 Term Loan Amount.  Proceeds of each 2021 
Term Loan Advance shall be deposited into an account that is subject to a first priority perfected security interest 
in favor of Agent perfected by an Account Control Agreement.

Advance  Request.    To  obtain  a  2021  Term  Loan  Advance,  Borrower  shall  complete,  sign  and
deliver an Advance Request (at least (i) in the case of any 2021 Term Loan Advance to be advanced under Section
2.1.2(a)(i), one (1) Business Day before the Advance Date, and (ii) in the case of any 2021 Term Loan Advance to
be advanced under Section 2.1.2(a)(ii), at least five (5) Business Days before the Advance Date) to Agent.  Lender
shall fund its ratable portion of each 2021 Term Loan Advance in the manner requested by the Advance Request
provided that each of the conditions precedent to such 2021 Term Loan Advance is satisfied as of the requested
Advance Date.

Interest.  The principal balance of each 2021 Term Loan Advance shall bear interest thereon from
such  Advance  Date  at  the  2021  Term  Loan  Interest  Rate  based  on  a  year  consisting  of  360  days,  with  interest
computed  daily  based  on  the  actual  number  of  days  elapsed.   The  2021  Term  Loan  Interest  Rate  will  float  and
change on the day the Prime Rate changes from time to time.

Payment.  Borrower will pay interest on each 2021 Term Loan Advance on the first (1st) Business
Day of each month, beginning the month after the Advance Date. The entire 2021 Term Loan Advances principal
balance and all accrued but unpaid interest thereon hereunder, shall be due and payable on the 2021 Term Loan
Maturity Date. Borrower shall make all payments under this Agreement without setoff, recoupment or deduction
and  regardless  of  any  counterclaim  or  defense.  Lender  will  initiate  debit  entries  to  the  Borrower’s  account  as
authorized on the ACH Authorization on each payment date of all periodic obligations payable to Lender under
each 2021 Term Loan Advance.  Once repaid, the 2021 Term Loan Advances or any portion thereof may not be
reborrowed.

Extension of 2021 Term Loan Maturity Date.

(i)

Subject to the terms and conditions set forth in clause (ii) below, Borrower may give
Agent written notice not later than the date that is thirty (30) days prior to the 2021 Term Loan Maturity Date then
in effect hereunder (such 2021 Term Loan Maturity Date then in effect, the “Existing 2021 Term Loan Maturity
Date”), that it has elected to extend the 2021 Term Loan Maturity Date by an additional twelve (12) months from
the Existing 2021 Term Loan Maturity Date; provided that Borrower may deliver only two (2) such notices of

21

extension so that the total number of months by which the 2021 Term Loan Maturity Date may be extended under
this Section 2.1.2(e) shall not exceed twenty-four (24).

pursuant to this Section 2.1.2(e) shall be effective unless:

(ii)

Notwithstanding the foregoing, no extension of the 2021 Term Loan Maturity Date

(A)  immediately  prior  to  and  upon  giving  effect  to  such  extension  (1)  the
representations and warranties contained in the Loan Documents are true, accurate and complete in all material
respects except to the extent such representations and warranties relate to an earlier date, in which case they are
true  and  correct  in  all  material  respects  as  of  such  date  (in  all  cases  without  giving  effect  to  any  standard(s)  of
materiality contained in such Loan Documents as to such representations and warranties), (2) no fact or condition
exists that would (or would, with the passage of time, the giving of notice, or both) constitute an Event of Default
and (3) no event that has had or could reasonably be expected to have a Material Adverse Effect has occurred and
is continuing; and

(B)  Agent  shall  have  received,  without  limitation,  such  other  documents,
agreements,  certificates,  notices,  reports,  filings,  opinions,  financial  statements  and  other  writings  reasonably
requested by Agent in connection therewith.

Maximum Interest.  Notwithstanding any provision in this Agreement or any other Loan Document, it is
the  parties’  intent  not  to  contract  for,  charge  or  receive  interest  at  a  rate  that  is  greater  than  the  maximum  rate
permissible by law that a court of competent jurisdiction shall deem applicable hereto (which under the laws of
the State of California shall be deemed to be the laws relating to permissible rates of interest on commercial loans)
(the “Maximum Rate”).  If a court of competent jurisdiction shall finally determine that Borrower has actually
paid to Lender an amount of interest in excess of the amount that would have been payable if all of the Secured
Obligations  had  at  all  times  borne  interest  at  the  Maximum  Rate,  then  such  excess  interest  actually  paid  by
Borrower  shall  be  applied  as  follows:  first,  to  the  payment  of  the  Secured  Obligations  consisting  of  the
outstanding  principal  of  the  Term  Loan  Advances,  the  2018  Term  Loan  Advances  and  the  2021  Term  Loan
Advances;  second,  after  all  principal  is  repaid,  to  the  payment  of  Lender's  accrued  interest,  costs,  expenses,
professional fees and any other Secured Obligations; and third, after all Secured Obligations are repaid, the excess
(if any) shall be refunded to Borrower.

Default Interest.  In the event any payment is not paid on the scheduled payment date, an amount equal to
five  percent  (5%)  of  the  past  due  amount  shall  be  payable  on  demand.    In  addition,  upon  the  occurrence  and
during  the  continuation  of  an  Event  of  Default  hereunder,  all  Secured  Obligations,  including  principal,  interest,
compounded interest, and professional fees, shall bear interest at a rate per annum equal to the rate set forth in
Section  2.1(d),  plus  five  percent  (5%)  per  annum.  In  the  event  any  interest  is  not  paid  when  due  hereunder,
delinquent interest shall be added to principal and shall bear interest on interest, compounded at the rate set forth
in Section 2.1(d).

Prepayment.    At  its  option,  Borrower  may  prepay  the  whole  or  part  (but  in  an  amount  not  less  than

$10,000,000 or less if the applicable amount of outstanding Advances are less than $10,000,000 at such time) of:

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Upon at least five (5) Business Days prior written notice to Agent, the outstanding 2018 Term Loan
Advances including all accrued and unpaid interest thereon, all unpaid Lender's fees and expenses accrued to the
date of the repayment (including, without limitation, the Third Advance End of Term Charge and the 2018 End of
Term  Charge)  together  with  a  prepayment  charge  equal  to  the  following  percentage  of  the  amount  of  the  2018
Term  Loan  Advances  being  prepaid:  if  such  2018  Term  Loan  Advance  amounts  are  prepaid  in  any  of  the  first
twelve  (12)  months  following  the  First  Amendment  Closing  Date,  two  percent  (2%);  after  twelve  (12)  months
following the First Amendment Closing Date but prior to twenty four (24) months following the First Amendment
Closing Date, one and one half percent (1.5%); and after twenty four (24) months following the First Amendment
Closing  Date  but  prior  to  the  2018  Term  Loan  Maturity  Date,  one  percent  (1%)  (each,  a  “2018  Prepayment
Charge”).  Borrower agrees that the 2018 Prepayment Charge is a reasonable calculation of Lender's lost profits in
view of the difficulties and impracticality of determining actual damages resulting from an early repayment of the
2018  Term  Loan  Advances.    For  the  avoidance  of  doubt,  Lender  and  Agent  agree  that  the  2018  Term  A  Loan
Advances made hereunder does not constitute prepayment of the Original Term Loan Advances.

Upon at least thirty (30) days prior written notice to Agent and only after the date is six months
after the Second Amendment Closing Date, the outstanding 2021 Term Loan Advances including all accrued and
unpaid  interest  thereon,  all  unpaid  Lender's  fees  and  expenses  accrued  to  the  date  of  the  repayment  (including,
without limitation, the 2021 End of Term Charge).

Upon  the  occurrence  of  a  Change  in  Control,  Borrower  shall  immediately  prepay  the  aggregate  outstanding
amount of all principal of all Advances and accrued interest thereon through the prepayment date and all unpaid
Lender's  fees  and  expenses  accrued  to  the  date  of  the  prepayment  (including,  without  limitation,  the  Third
Advance End of Term Charge, the 2018 End of Term Charge and the 2021 End of Term Charge) together with a
2018 Prepayment Charge.

Original End of Term Charge.  On the earliest to occur of (i) October 1, 2016, (ii) the date that Borrower
prepays  the  outstanding  Secured  Obligations,  or  (iii)  the  date  that  the  Secured  Obligations  become  due  and
payable, Borrower shall pay Lender a charge equal to $345,000.  Notwithstanding the required payment date of
such charge, it shall be deemed earned by Lender as of the Original Closing Date.

Additional End of Term Charges.

On  the  earliest  to  occur  of  (i)  June  30,  2018,  (ii)  the  date  that  Borrower  prepays  the  outstanding
Secured  Obligations,  or  (iii)  the  date  that  the  Secured  Obligations  become  due  and  payable,  Borrower  shall
immediately pay Lender an additional charge equal to $250,000 (the “Second Advance End of Term Charge”).
 Notwithstanding the required payment date of such charge, it shall be deemed earned by Lender as of June 26,
2014.

On the earliest to occur of (i) the Term Loan Maturity Date, (ii) the date that Borrower prepays the
outstanding  Secured  Obligations  in  full,  or  (iii)  the  date  that  the  Secured  Obligations  become  due  and  payable,
Borrower  shall  immediately  pay  Lender  an  additional  charge  equal  to  $970,000  (the  “Third  Advance  End  of
Term Charge”).  Notwithstanding the

23

required payment date of such charge, it shall be deemed earned by Lender as of the Restatement Date.

On  the  earliest  to  occur  of  (i)  the  2018  Term  Loan  Maturity  Date,  (ii)  the  date  that  Borrower
prepays the outstanding Secured Obligations in full, or (iii) the date that the Secured Obligations become due and
payable,  Borrower  shall  immediately  pay  Lender  One  Million  Seven  Hundred  Thirty-Two  Thousand  Five
Hundred Dollars ($1,732,500) (the “2018 End of Term Charge”). Notwithstanding the required payment date of
such charge, the 2018 End of Term Charge shall be deemed earned by Lender as of the First Amendment Closing
Date.

On  the  earliest  to  occur  of  (i)  the  2021  Term  Loan  Maturity  Date,  (ii)  the  date  that  Borrower
prepays the outstanding Secured Obligations in respect of the 2021 Term Loan Advances in full, or (iii) the date
that the Secured Obligations become due and payable, Borrower shall immediately pay Lender with respect to the
2021 Term Loan Advances a charge equal to following percentages multiplied by the aggregate original principal
amount of all 2021 Term Loan Advances extended by Lender (the “2021 End of Term Charge”): (A) 1.65% if
the  date  such  payment  is  required  to  be  made  occurs  after  six  (6)  months  following  the  Second  Amendment
Closing Date but prior to nine (9) months following the Second Amendment Closing Date, (B) 2.25% if the date
such payment is required to be made occurs after nine (9) months following the Second Amendment Closing Date
but  prior  to  twelve  (12)  months  following  the  Second  Amendment  Closing  Date,  (C)  3.85%  if  the  date  such
payment is required to be made occurs after twelve (12) months following the Second Amendment Closing Date
but prior to twenty-four (24) months following the Second Amendment Closing Date and (4) 4.85% if the date
such  payment  is  required  to  be  made  occurs  after  twenty-four  (24)  months  following  the  Second  Amendment
Closing  Date;  provided,  however  that  immediately  upon  the  effectiveness  of  each  separate  twelve  (12)  month
extension of the 2021 Term Loan Maturity Date pursuant to Section 2.1.2(e), each of the foregoing percentages
shall  be  increased  by  one  percent  (1%).    For  the  avoidance  of  doubt,  if  the  2021  Term  Loan  Maturity  Date  is
extended twice under Section 2.1.2(e), then each of the foregoing percentages used to calculate the 2021 End of
Term Charge shall be increased by two percent (2%) in total.  Notwithstanding the required payment date of such
charge, the 2021 End of Term Charge shall be deemed earned by Lender, as to such 2021 Term Loan Advance, as
of each date a 2021 Term Loan Advance is made.

Notes.  If so requested by Lender by written notice to Borrower, then Borrower shall execute and deliver
to  Lender  (and/or,  if  applicable  and  if  so  specified  in  such  notice,  to  any  person  who  is  an  assignee  of  Lender
pursuant to Section 11.12) (promptly after the Borrower’s receipt of such notice) a Note or Notes to evidence an
Advance made by a Lender.

Commitment Fee; Facility Charge.  The parties acknowledge and agree that Borrower paid to Lender (i) a
commitment fee of $45,000 on or before the Original Closing Date, and such commitment fee was fully earned on
the  Original  Closing  Date  and  non-refundable  regardless  of  the  early  termination  of  this  Agreement,  (ii)  the
Facility Charge of $125,000 on the Original Closing Date, and that such Facility Charge was fully earned on the
Original Closing Date and non-refundable regardless of the early termination of this Agreement, (iii) the facility
charge  of  $200,000  on  June  26,  2014,  and  such  facility  charge  was  fully  earned  on  June  26,  2014  and  non-
refundable regardless of the early termination of this Agreement, (iv) the Third Advance Facility

24

Charge of $150,000 on the Restatement Date, and such facility charge was fully earned on the Restatement Date
and non-refundable regardless of the early termination of this Agreement, (v) the facility charge of $175,000 on
the  First  Amendment  Closing  Date,  and  such  facility  charge  was  fully  earned  on  the  First  Amendment  Closing
Date  and  non-refundable  regardless  of  the  early  termination  of  this  Agreement  and  (vi)  the  facility  charge  of
$350,000  on  the  Second  Amendment  Closing  Date,  and  such  facility  charge  was  fully  earned  on  the  Second
Amendment Closing Date and non-refundable regardless of the early termination of this Agreement.

Pro Rata Treatment.  Each payment (including prepayment) on account of any fee and any reduction of the
2018 Term Loan Advances shall be made pro rata according to the 2018 Term A Loan Advance of the relevant
Lender.  Each payment (including prepayment) on account of any fee and any reduction of the 2021 Term Loan
Advances shall be made pro rata according to such 2021 Term Loan Advance of the relevant Lender.

SECURITY INTEREST

As security for the prompt, complete and indefeasible payment when due (whether on the payment dates

or otherwise) of all the Secured Obligations:

uniQure Holdings grants to Lender a first ranking right of pledge on its shares in uniQure Bio and

uniQure IP;

uniQure Bio grants to Lender a first ranking right of pledge on its shares in its Dutch subsidiaries

identified on the Schedule 1 hereto and a security interest in 100% of the capital stock of US Borrower;

Obligor (excluding US Borrower) grants to Lender a first ranking right of pledge on its (a) trade,

intercompany and insurance receivables; (b) movable assets and (c) Deposit Accounts; and

US Borrower grants to Lender a security interest in all of US Borrower’s right, title, and interest in
and to the following personal property whether now owned or hereafter acquired: (a) receivables; (b) equipment;
(c)  fixtures;  (d)  general  intangibles  (except  as  described  below);  (e)  inventory;  (f)  Investment  Property;
(g) Deposit Accounts; (h) Cash; (i) Goods; and all other tangible and intangible personal property of US Borrower
whether  now  or  hereafter  owned  or  existing,  leased,  consigned  by  or  to,  or  acquired  by,  US  Borrower  and
wherever located, and any of US Borrower’s property in the possession or under the control of Lender; and, to the
extent  not  otherwise  included,  all  proceeds  of  each  of  the  foregoing  and  all  accessions  to,  substitutions  and
replacements  for,  and  rents,  profits  and  products  of  each  of  the  foregoing,  (a),  (b),  (c)  and  (d)  collectively,  the
“Collateral”.

Notwithstanding anything in this Agreement or any other Loan Document to the contrary, in no event shall
the Collateral include, and the Obligor shall not be deemed to have granted a security interest in: (i) Intellectual
Property; provided, however, that the Collateral shall include all accounts and general intangibles that consist of
rights  to  payment  and  proceeds  from  the  sale,  licensing  or  disposition  of  all  or  any  part,  or  rights  in,  the
Intellectual Property (the “Rights to Payment”); or (ii) any of the Borrower’s rights or interests in or under, any
license, contract, permit, instrument, security or franchise to which the Borrower is a party or any of its rights or

25

interests thereunder to the extent, but only to the extent, that such a grant would, under the terms of such license,
contract, permit, instrument, security or franchise, result in a breach of the terms of, or constitute a default under,
such license, contract, permit, instrument, security or franchise (other than to the extent that any such term would
be  rendered  ineffective  pursuant  to  the  UCC  or  any  other  applicable  law  (including  the  Dutch  and  the  United
States  Bankruptcy  Code)  or  principles  of  equity);  provided,  that  immediately  upon  the  ineffectiveness,  lapse  or
termination of any such provision the Collateral shall include, and the Borrower shall be deemed to have granted a
security interest in, all the rights and interests described in the foregoing clause (ii) as if such provision had never
been in effect.  Notwithstanding the foregoing, if a judicial authority (including a U.S. Bankruptcy Court) holds
that a security interest in the underlying Intellectual Property is necessary to have a security interest in the Rights
to  Payment,  then  the  Collateral  shall  automatically,  and  effective  as  of  the  date  of  this  Agreement,  include  the
Intellectual  Property  to  the  extent  necessary  to  permit  perfection  of  Lender’s  security  interest  in  the  Rights  to
Payment.

CONDITIONS PRECEDENT TO ADVANCES

The obligation of Lender to make the 2021 Term Loan Advances hereunder is subject to the satisfaction by

Borrower of the following conditions:

Closing Documents.  On or prior to the Advance of the 2021 Term Loan Advances under Section 2.1.2(a)
(i)  only,  Borrower  shall  have  delivered  to  Lender  each  of  the  documents,  certificates  and  other  items  required
pursuant to Section 4 of the Amendment No. 2 and satisfaction of all conditions precedent thereto.

Advance Request.  Borrower shall have delivered to Lender the following: (a) an Advance Request for the
relevant  Advance  as  required  by  2.1.2(b),  duly  executed  by  uniQure  Holdings’  Chief  Executive  Officer,  Chief
Financial Officer or Chief Accounting Officer and (b) any other documents Lender may reasonably request.

Other conditions to Advances.

The representations and warranties set forth in this Agreement and in Section 5 shall be true and
correct in all material respects on and as of the relevant Advance Date with the same effect as though made on and
as of such date, except to the extent such representations and warranties expressly relate to an earlier date.

Borrower shall be in compliance with all the terms and provisions set forth herein and in each other

Loan Document on its part to be observed or performed.

The Advance Request shall be deemed to constitute a representation and warranty by Borrower on
the relevant Advance Date as to the matters specified in Section 4.4 and as to the matters set forth in the Advance
Request.

No Default.  As of the relevant Advance Date, (i) no fact or condition exists that would (or would, with the
passage of time, the giving of notice, or both) constitute an Event of Default and (ii) no event that has had or could
reasonably be expected to have a Material Adverse Effect has occurred and is continuing.

26

REPRESENTATIONS AND WARRANTIES OF BORROWER

Borrower represents and warrants that:

Corporate Status.  uniQure Bio is a private limited liability company duly incorporated and existing under
the laws of the Netherlands, and is duly qualified as a foreign corporation in all jurisdictions in which the nature
of its business or location of its properties require such qualifications and where the failure to be qualified could
reasonably be expected to have a Material Adverse Effect.  uniQure Bio’s present name, former names (if any),
locations,  place  of  formation,  tax  identification  number,  organizational  identification  number  and  other
information are correctly set forth in Exhibit C, as may be updated by uniQure Bio in a written notice (including
any Compliance Certificate) provided to Lender after the Restatement Date.  US Borrower is a corporation duly
organized, legally existing and in good standing under the laws of the State of Delaware, and is duly qualified as a
foreign corporation in all jurisdictions in which the nature of its business or location of its properties require such
qualifications  and  where  the  failure  to  be  qualified  could  reasonably  be  expected  to  have  a  Material  Adverse
Effect.

Collateral.  The relevant Obligor owns the Collateral and the Intellectual Property, free of all Liens, except
for  Permitted  Liens.    Each  Obligor  has  the  power  and  authority  to  grant  to  Lender  a  Lien  in  the  Collateral  as
security for the Secured Obligations.

Consents.  Borrower’s execution, delivery and performance of the Notes (if any), this Agreement and all
other Loan Documents, (i) have been duly authorized by all necessary corporate action of Borrower, (ii) will not
result  in  the  creation  or  imposition  of  any  Lien  upon  the  Collateral,  other  than  Permitted  Liens  and  the  Liens
created  by  this  Agreement  and  the  other  Loan  Documents,  (iii)  do  not  violate  any  provisions  of  Borrower’s
articles  of  association,  or  any,  law,  regulation,  order,  injunction,  judgment,  decree  or  writ  to  which  Borrower  is
subject  and  (iv)  except  as  described  on  Schedule  5.3,  do  not  violate  any  contract  or  agreement  or  require  the
consent  or  approval  of  any  other  Person  which  has  not  already  been  obtained.    The  individual  or  individuals
executing the Loan Documents are duly authorized to do so.

Material  Adverse  Effect.    No  event  that  has  had  or  could  reasonably  be  expected  to  have  a  Material
Adverse  Effect  has  occurred  and  is  continuing.    Borrower  is  not  aware  of  any  event  likely  to  occur  that  is
reasonably expected to result in a Material Adverse Effect.

Actions Before Governmental Authorities.  Except as described on Schedule 5.5, there are no actions, suits
or proceedings at law or in equity or by or before any governmental authority now pending or, to the knowledge
of uniQure Holdings, threatened against or affecting Borrower or its property (i) which seek to prevent, enjoin,
hinder  or  delay  the  transactions  contemplated  by  the  Loan  Documents  or  (ii)  as  to  which  there  is  a  reasonable
possibility  of  an  adverse  determination  and  which,  if  adversely  determined,  would  reasonably  be  expected  to,
individually or in the aggregate, have a Material Adverse Effect on Borrower’s business.

Laws.    Borrower,  to  its  knowledge,  is  not  in  violation  of  any  law,  rule  or  regulation,  or  in  default  with
respect to any judgment, writ, injunction or decree of any governmental authority, where such violation or default
is reasonably expected to result in a Material Adverse Effect.  Borrower, to its knowledge, is not in default in any
manner under any provision of any

27

agreement  or  instrument  evidencing  indebtedness,  or  any  other  material  agreement  to  which  it  is  a  party  or  by
which it is bound and for which such default would reasonably be expected to have a Material Adverse Effect on
Borrower’s business.

Neither Borrower nor any of its Subsidiaries is an “investment company” or a company “controlled” by an
“investment company” under the Investment Company Act of 1940, as amended, as applicable.  Neither Borrower
nor any of its Subsidiaries is engaged as one of its important activities in extending credit for margin stock (under
Regulations  X,  T  and  U  of  the  Federal  Reserve  Board  of  Governors,  as  applicable).    Borrower  and  each  of  its
Subsidiaries  has  complied  in  all  material  respects  with  the  Federal  Fair  Labor  Standards  Act,  as  applicable.
 Neither Borrower nor any of its Subsidiaries is a “holding company” or an “affiliate” of a “holding company” or
a “subsidiary company” of a “holding company” as each term is defined and used in the Public Utility Holding
Company Act of 2005, as applicable.  Neither Borrower’s nor any of its Subsidiaries’ properties or assets has been
used by Borrower or such Subsidiary or, to Borrower’s knowledge, by previous Persons, in disposing, producing,
storing, treating, or transporting any hazardous substance other than in material compliance with applicable laws.
  Borrower  and  each  of  its  Subsidiaries  has  obtained  all  consents,  approvals  and  authorizations  of,  made  all
declarations or filings with, and given all notices to, all Governmental Authorities that are necessary to continue
their respective businesses as currently conducted.

None of Borrower, any of its Subsidiaries, or any of Borrower’s or its Subsidiaries’ Affiliates or any of
their respective agents acting or benefiting in any capacity in connection with the transactions contemplated by
this  Agreement  is  (i)  in  violation  of  any  Anti-Terrorism  Law,  (ii)  engaging  in  or  conspiring  to  engage  in  any
transaction  that  evades  or  avoids,  or  has  the  purpose  of  evading  or  avoiding  or  attempts  to  violate,  any  of  the
prohibitions  set  forth  in  any  Anti-Terrorism  Law,  or  (iii)  is  a  Blocked  Person.    None  of  Borrower,  any  of  its
Subsidiaries,  or  to  the  knowledge  of  Borrower  and  any  of  their  Affiliates  or  agents,  acting  or  benefiting  in  any
capacity  in  connection  with  the  transactions  contemplated  by  this  Agreement,  (x)  conducts  any  business  or
engages in making or receiving any contribution of funds, goods or services to or for the benefit of any Blocked
Person,  or  (y)  deals  in,  or  otherwise  engages  in  any  transaction  relating  to,  any  property  or  interest  in  property
blocked pursuant to Executive Order No. 13224, any similar executive order or other Anti-Terrorism Law.  None
of  the  funds  to  be  provided  under  this  Agreement  will  be  used,  directly  or  indirectly,  (a)  for  any  activities  in
violation of any applicable anti-money laundering, economic sanctions and anti-bribery laws and regulations laws
and  regulations  or  (b)  for  any  payment  to  any  governmental  official  or  employee,  political  party,  official  of  a
political party, candidate for political office, or anyone else acting in an official capacity, in order to obtain, retain
or direct business or obtain any improper advantage, in violation of the United States Foreign Corrupt Practices
Act of 1977, as amended.

Information Correct and Current.  No information, report, Advance Request, financial statement, exhibit or
schedule furnished, by or on behalf of Borrower to Lender in connection with any Loan Document or included
therein  or  delivered  pursuant  thereto  contained,  contains  or  will  contain  any  material  misstatement  of  fact  or
omitted, omits or will omit to state any material fact necessary to make the statements therein, in the light of the
circumstances under which they were, are or will be made, not misleading at the time such statement was made or
deemed made.  Additionally, any and all financial or business projections provided by Borrower to Lender shall be
(i) provided in good faith and based on the most current data and information available to

28

Borrower,  (ii)  the  most  current  of  such  projections  provided  to  the  Board,  and  (iii)  are  based  on  reasonable
assumptions not viewed as facts and that actual results during the period or periods covered by such projections
and forecast may differ from the projected or forecasted results.

Tax Matters.  Except as described on Schedule 5.8, (a) Borrower has filed all federal, state and local tax
returns that it is required to file, (b) Borrower has duly paid or fully reserved for all taxes or installments thereof
(including any interest or penalties) as and when due, which have or may become due pursuant to such returns,
and (c) Borrower has paid or fully reserved for any tax assessment received by Borrower for the three (3) years
preceding  the  Restatement  Date,  if  any  (including  any  taxes  being  contested  in  good  faith  and  by  appropriate
proceedings).

Intellectual  Property  Claims.    Borrower  is  the  sole  owner  of,  or  otherwise  has  the  right  to  use,  the
Intellectual Property.  Except as described on Schedule 5.9, (i) each of the material Copyrights, Trademarks and
Patents  is  valid  and  enforceable,  (ii)  no  material  part  of  the  Intellectual  Property  has  been  judged  invalid  or
unenforceable, in whole or in part, and (iii) no claim has been made in writing to Borrower that any material part
of the Intellectual Property violates the rights of any third party.  Exhibit D is a true, correct and complete list of
each of Borrower’s Patents, registered Trademarks, registered Copyrights, and material agreements under which
Borrower  licenses  Intellectual  Property  from  third  parties  (other  than  shrink-wrap  software  licenses  and  other
licenses for over-the-counter software), together with application or registration numbers, as applicable, owned by
Borrower or any Subsidiary, in each case as of the Restatement Date.  Borrower is not in material breach of, nor
has  Borrower  failed  to  perform  any  material  obligations  under,  any  of  the  foregoing  contracts,  licenses  or
agreements and, to uniQure Holdings’ knowledge, no third party to any such contract, license or agreement is in
material breach thereof or has failed to perform any material obligations thereunder.

Intellectual Property.  Except as described on Schedule 5.10, Borrower has, or in the case of any proposed
business, will have, all material rights with respect to Intellectual Property necessary in the operation or conduct
of Borrower’s business as currently conducted and proposed to be conducted by Borrower, Without limiting the
generality  of  the  foregoing,  and  in  the  case  of  Licenses,  except  for  restrictions  that  are  unenforceable  under
Division 9 of the UCC, Borrower has the right, to the extent required to operate Borrower’s business, to freely
transfer, license or assign Intellectual Property without condition, restriction or payment of any kind (other than
license payments in the ordinary course of business) to any third party, and Borrower owns or has the right to use,
pursuant  to  valid  licenses,  all  software  development  tools,  library  functions,  compilers  and  all  other  third-party
software  and  other  items  that  are  necessary  in  the  design,  development,  promotion,  sale,  license,  manufacture,
import, export, use or distribution of Borrower Products.

Borrower Products.  Except as described on Schedule 5.11, no Intellectual Property owned by Borrower or
Borrower  Product  has  been  or  is  subject  to  any  actual  or,  to  the  knowledge  of  Borrower,  threatened  litigation,
proceeding  or  outstanding  decree,  order,  judgment,  settlement  agreement  or  stipulation  that  restricts  in  any
material  manner  Borrower’s  use,  transfer  or  licensing  thereof  or  that  may  materially  affect  the  validity,  use  or
enforceability  thereof.    There  is  no  decree,  order,  judgment,  agreement,  stipulation,  arbitral  award  or  other
provision entered into in connection with any litigation or proceeding that obligates Borrower to grant licenses or
ownership interest in any future Intellectual Property related to the operation or

29

conduct  of  the  business  of  Borrower  or  Borrower  Products.    Borrower  has  not  received  any  written  notice  or
claim, or, to the knowledge of Borrower, oral notice or claim, challenging or questioning Borrower’s ownership in
any Intellectual Property (or written notice of any claim challenging or questioning the ownership in any licensed
Intellectual Property of the owner thereof) or suggesting that any third party has any claim of legal or beneficial
ownership with respect thereto nor, to Borrower’s knowledge, is there a reasonable basis for any such claim.  To
Borrower’s knowledge, neither Borrower’s use of its Intellectual Property nor the production and sale of Borrower
Products infringes the Intellectual Property or other rights of others.

Financial Accounts.  Exhibit E, as may be updated by the Borrower in a written notice provided to Lender
after the Restatement Date, is a true, correct and complete list of (a) all banks and other financial institutions at
which Borrower or any Subsidiary maintains Deposit Accounts and (b) all institutions at which Borrower or any
Subsidiary  maintains  an  account  holding  Investment  Property,  and  such  exhibit  correctly  identifies  the  name,
address  and  telephone  number  of  each  bank  or  other  institution,  the  name  in  which  the  account  is  held,  a
description of the purpose of the account, and the complete account number therefor.

Employee Loans.  Borrower has no outstanding loans to any employee, officer or director of the Borrower
nor has Borrower guaranteed the payment of any loan made to an employee, officer or director of the Borrower by
a third party.

Capitalization and Subsidiaries.  uniQure Holdings’ capitalization as of the Restatement Date is set forth
on  Schedule  5.14  annexed  hereto.    uniQure  Holdings  does  not  own  any  stock,  partnership  interest  or  other
securities  of  any  Person,  except  for  Permitted  Investments.   Attached  as  Schedule  5.14,  as  may  be  updated  by
uniQure Holdings in a written notice provided after the Restatement Date, is a true, correct and complete list of
each Subsidiary.

Centre of main interests and establishments.  uniQure Bio has its “centre of main interests” (as that term is
used in article 3(1) of The Council of the European Union Regulation No.  1346/2000 on Insolvency Proceedings)
in the Netherlands.

  INSURANCE; INDEMNIFICATION

Coverage.    uniQure  Holdings  shall  cause  to  be  carried  and  maintained  (by  itself  or  its  Subsidiaries)
commercial  general  liability  insurance,  on  an  occurrence  form,  against  risks  customarily  insured  against  in
uniQure Holdings’s line of business.  Such risks shall include the risks of bodily injury, including death, property
damage,  personal  injury,  advertising  injury,  and  contractual  liability  per  the  terms  of  the  indemnification
agreement found in Section 6.3.  uniQure Holdings or its Subsidiaries must maintain a minimum of $1,000,000 of
commercial general liability insurance for each occurrence and $2,000,000 in the aggregate.  uniQure Holdings or
its Subsidiaries has and agrees to maintain a minimum of $2,000,000 of directors’ and officers’ insurance for each
occurrence and $5,000,000 in the aggregate.  So long as there are any Secured Obligations outstanding, uniQure
Holdings shall also cause or procure that its Subsidiaries cause to be carried and maintained insurance upon the
Collateral, insuring against all risks of physical loss or damage howsoever caused, in an amount not less than the
full replacement cost of the Collateral, provided that such insurance may be subject to standard

30

exceptions and deductibles.  uniQure Holdings or its Subsidiaries shall also carry and maintain a fidelity insurance
policy in an amount not less than $100,000.

Certificates.    uniQure  Holdings  shall  deliver  to  Lender  certificates  of  insurance  that  evidence  uniQure
Holdings or its Subsidiaries compliance with its insurance obligations in Section 6.1 and the obligations contained
in this Section 6.2.  uniQure Holding’s (or its Subsidiaries) insurance certificate shall state Lender is an additional
insured  for  commercial  general  liability,  a  loss  payee  for  all  risk  property  damage  insurance,  subject  to  the
insurer’s  approval,  a  loss  payee  for  fidelity  insurance,  and  a  loss  payee  for  property  insurance  and  additional
insured for liability insurance for any future insurance that uniQure Holdings or its Subsidiaries may acquire from
such insurer, unless any right under the liability insurance is restricted from being pledged under Section 7:954(4)
of  the  Dutch  Civil  Code.   Attached  to  the  certificates  of  insurance  will  be  additional  insured  endorsements  for
liability  and  lender’s  loss  payable  endorsements  for  all  risk  property  damage  insurance  and  fidelity.    Unless  an
Event  of  Default  shall  have  occurred  and  be  continuing,  all  insurance  proceeds  shall  be  paid  or  turned  over  to
uniQure Holdings or its Subsidiaries, as applicable.  All certificates of insurance will provide for a minimum of
thirty (30) days advance written notice to Lender of cancellation or any other change adverse to Lender’s interests.
 Any failure of Lender to scrutinize such insurance certificates for compliance is not a waiver of any of Lender’s
rights, all of which are reserved.  Borrower shall provide Agent with copies of each insurance policy, and upon
entering or amending any insurance policy required hereunder, Borrower shall provide Agent with copies of such
policies and shall promptly deliver to Agent updated insurance certificates with respect to such policies.

Indemnity.  Borrower agrees to indemnify and hold Lender and its officers, directors, employees, agents,
in-house  attorneys,  representatives  and  shareholders  harmless  from  and  against  any  and  all  claims,  costs,
expenses,  damages  and  liabilities  (including  such  claims,  costs,  expenses,  damages  and  liabilities  based  on
liability  in  tort:,  including  strict  liability  in  tort),  including  reasonable  documented  attorneys’  fees  and
disbursements and other costs of investigation or defense (including those incurred upon any appeal), that may be
instituted  or  asserted  against  or  incurred  by  Lender  or  any  such  Person  as  the  result  of  credit  having  been
extended, suspended or terminated under this Agreement and the other Loan Documents or the administration of
such credit, or in connection with or arising out of the transactions contemplated hereunder and thereunder, or any
actions or failures to act in connection therewith, or arising out of the disposition or utilization of the Collateral,
excluding  in  all  cases  claims  resulting  solely  from  Lender’s  gross  negligence  or  willful  misconduct  Borrower
agrees to pay, and to save Lender harmless from, any and all liabilities with respect to, or resulting from any delay
in  paying,  any  and  all  excise,  sales  or  other  similar  taxes  (excluding  taxes  imposed  on  or  measured  by  the  net
income of Lender) that may be payable or determined to be payable with respect to any of the Collateral or this
Agreement.  This Section 6.3 shall survive the repayment of indebtedness under, and otherwise shall survive the
expiration or other termination of, the Agreement.

31

COVENANTS OF BORROWER

Borrower agrees as follows:

Financial Reports.    uniQure  Holdings  shall  furnish  to  Lender  the  financial  statements  and  reports  listed

hereinafter (the “Financial Statements”):

as soon as practicable (and in any event within 30 days) after the end of each month, its unaudited
interim  and  year-to-date  financial  statements  as  of  the  end  of  such  month  (prepared  on  a  consolidated  and
consolidating  basis,  if  applicable),  including  balance  sheet  and  related  statements  of  income  accompanied  by  a
report detailing any material contingencies (including the commencement of any material litigation by or against
the Obligors) or any other occurrence that would reasonably be expected to have a Material Adverse Effect, all
certified  by  uniQure  Holdings’  Chief  Executive  Officer,  Chief  Financial  Officer,  Chief  Accounting  Officer  or
Global  Controller  to  the  effect  that  they  have  been  prepared  in  accordance  with  Accounting  Standards,  except
(i)  for  the  absence  of  footnotes,  (ii)  that  they  are  subject  to  normal  year-end  adjustments,  and  (iii)  they  do  not
contain certain non-cash items that are customarily included in quarterly and annual financial statements;

as  soon  as  practicable  (and  in  any  event  within  60  days)  after  the  end  of  each  calendar  quarter,
unaudited  interim  and  year-to-date  financial  statements  as  of  the  end  of  such  calendar  quarter  (prepared  on  a
consolidated and consolidating basis, if applicable), including balance sheet and related statements of income and
cash  flows  accompanied  by  a  report  detailing  any  material  contingencies  (including  the  commencement  of  any
material litigation by or against Borrower) or any other occurrence that would reasonably be expected to have a
Material Adverse Effect, certified by uniQure Holdings’ Chief Executive Officer, Chief Financial Officer, Chief
Accounting Officer or Global Controller to the effect that they have been prepared in accordance with Accounting
Standards, except (i) for the absence of footnotes, and (ii) that they are subject to normal year-end adjustments; as
well  as  the  most  recent  capitalization  table  for  the  Obligors,  including  the  weighted  average  exercise  price  of
employee stock options;

as soon as practicable (and in any event within one hundred and eighty (180 days)) after the end of
each fiscal year, unqualified audited financial statements as of the end of such year (prepared on a consolidated
and consolidating basis, if applicable), including balance sheet and related statements of income and cash flows,
and setting forth in comparative form the corresponding figures for the preceding fiscal year, certified by a firm of
independent  certified  public  accountants  selected  by  uniQure  Holdings  and  reasonably  acceptable  to  Lender,
accompanied by any management report from such accountants;

as soon as practicable (and in any event within 30 days) after the end of each month, a Compliance

Certificate in the form of Exhibit F;

promptly  after  the  sending  or  filing  thereof,  as  the  case  may  be,  copies  of  any  proxy  statements,
financial statements or reports that US Borrower has made available to holders of its capital stock and copies of
any regular, periodic and special reports or registration statements that US Borrower files with the Securities and
Exchange Commission or any governmental authority that may be substituted therefor, or any national securities
exchange;

32

notify Lender in writing at least two (2) weeks in advance of the time and place of any regularly
scheduled  meeting  of  the  Board  (including  without  limitation  telephone,  conference  call  and  video  meetings).
 uniQure Holdings shall give Lender copies of all notices, minutes, consents and other materials uniQure Holdings
provides to its directors in connection with said meetings if reasonably requested by Lender;

Borrower  at  all  times  shall  maintain  Cash  and/or  cash  equivalents  on  deposit  in  a  deposit  or
security account located in the United States that is subject to an Account Control Agreement of at least the lesser
of (i) 65% of the outstanding principal balance of the Advances or (ii) 100% of all of the worldwide Cash and
cash equivalents of the Borrower;

as soon as practicable (and in any event within 30 days) of approval by the Board an annual budget
for  each  financial  year  as  well  as  budgets,  operating  plans  and  other  financial  information  with  respect  to  the
Obligors reasonably requested by Lender; and

uniQure  Holdings  shall  not  make  any  change  in  its  (a)  accounting  policies  or  reporting  practices
except in accordance with Accounting Standards, or (b) fiscal years or fiscal quarters.  The fiscal year of Borrower
shall end on December 31.

The filing of any financial statements, reports or registration statements by uniQure Holdings with the U.S.
Securities  Exchange  Commission  (or  foreign  equivalent  thereof)  through  its  electronic  filing  system  shall
constitute delivery of such materials to Lender for purposes hereof so long as Borrower timely emails a link of
such filings to Lender.

The executed Compliance Certificate may be sent via facsimile to Lender at [*].  All Financial Statements
required to be delivered pursuant to clauses (a), (b) and (c) shall be sent via e-mail to [*] provided, that if e-mail is
not available or sending such Financial Statements via e-mail is not possible, they shall be sent via facsimile to
Lender at: [*], attention Chief Credit Officer.

Management  Rights.    Borrower  shall  permit  any  representative  that  Lender  authorizes,  including  its
attorneys and accountants, to inspect the Collateral and examine and make copies and abstracts of the books of
account and records of Borrower at reasonable times and upon reasonable notice during normal business hours.  In
addition,  any  such  representative  shall  have  the  right  to  meet  with  management  and  officers  of  Borrower  to
discuss such books of account and records.  In addition, Lender shall be entitled at reasonable times and intervals
to  consult  with  and  advise  the  management  and  officers  of  Borrower  concerning  significant  business  issues
affecting Borrower.  Such consultations shall not unreasonably interfere with Borrower’s business operations.  The
parties intend that the rights granted Lender shall constitute “management rights” within the meaning of 29 C.F.R
Section 2510.3-101(d)(3)(ii), but that any advice, recommendations or participation by Lender with respect to any
business  issues  shall  not  be  deemed  to  give  Lender,  nor  be  deemed  an  exercise  by  Lender  of,  control  over
Borrower’s management or policies.

Further Assurances.  Borrower shall from time to time execute, deliver and file, alone or with Lender, any
financing statements, security agreements, collateral assignments, notices, control agreements, or other documents
to perfect or give the highest priority to Lender’s Lien on

33

the  Collateral.    Borrower  shall  from  time  to  time  procure  any  instruments  or  documents  as  may  reasonably  be
requested by Lender, and take all further action that may be necessary or desirable, or that Lender may reasonably
request,  to  perfect  and  protect  the  Liens  granted  hereby  and  thereby.    In  addition,  and  for  such  purposes  only,
Borrower  hereby  authorizes  Lender  to  execute  and  deliver  on  behalf  of  Borrower  and  to  file  such  financing
statements,  collateral  assignments,  notices,  control  agreements,  security  agreements  and  other  documents
necessary to grant, perfect and give the highest priority to Lender’s Lien on the Collateral without the signature of
Borrower either in Lender’s name or in the name of Lender as agent and attorney-in-fact for Borrower.  Borrower
shall protect and defend Borrower’s title to the Collateral and Lender’s Lien thereon against all Persons claiming
any interest adverse to Borrower or Lender other than Permitted Liens.

Indebtedness.  Borrower shall not create, incur, assume, guarantee or be or remain liable with respect to
any  Indebtedness,  or  permit  any  Subsidiary  so  to  do,  other  than  Permitted  Indebtedness,  or  prepay  any
Indebtedness or take any actions which impose on Borrower an obligation to prepay any Indebtedness, except for
the  conversion  of  Indebtedness  into  equity  securities  and  the  payment  of  cash  in  lieu  of  fractional  shares  in
connection  with  such  conversion.    Borrower  shall  not  make  any  payments  under  the  Leasehold  Financing  if  an
Event of Default has occurred and is continuing.

Collateral.  Borrower shall at all times keep the Collateral, the Intellectual Property and all other property
and assets used in Borrower’s business or in which Borrower now or hereafter holds any interest free and clear
from any legal process or Liens whatsoever (except for Permitted Liens), and shall give Lender prompt written
notice of any legal process affecting the Collateral, the Intellectual Property, such other property and assets, or any
Liens thereon.  Borrower shall cause its Subsidiaries to protect and defend such Subsidiary’s title to its assets from
and against all Persons claiming any interest adverse to such Subsidiary, and Borrower shall cause its Subsidiaries
at  all  times  to  keep  such  Subsidiary’s  property  and  assets  free  and  clear  from  any  legal  process  or  Liens
whatsoever  (except  for  Permitted  Liens),  and  shall  give  Lender  prompt  written  notice  of  any  legal  process
affecting such Subsidiary’s assets.  Borrower shall not agree with any Person other than Lender not to encumber
its property.

Investments.  Borrower shall not directly or indirectly acquire or own, or make any Investment in or to any

Person, or permit any of its Subsidiaries so to do, other than Permitted Investments.

Distributions.    Borrower  shall  not,  and  shall  not  allow  any  Subsidiary  to,  (a)  repurchase  or  redeem  any
class of stock or other equity interest other than (i) pursuant to employee, director or consultant repurchase plans,
stock option plans or agreements, restricted stock agreements or other similar agreements, provided, however, in
each  case  the  repurchase  or  redemption  price  does  not  exceed  the  original  consideration  paid  for  such  stock  or
equity  interest  or  (ii)  the  delivery  of  its  Ordinary  Shares  upon  conversion  of  Permitted  Convertible  Debt;
(b)  declare  or  pay  any  cash  dividend  or  make  a  cash  distribution  on  any  class  of  stock  or  other  equity  interest,
except  that  (i)  a  Subsidiary  may  pay  dividends  or  make  distributions  to  Borrower  and  (ii)  Borrower  may  make
cash payments in lieu of issuing fractional shares in connection with a conversion of Permitted Convertible Debt
into Ordinary Shares; (c) lend money to any employees, officers or directors or guarantee the payment of any such
loans granted by a third

34

party  in  excess  of  $250,000  in  the  aggregate;  or  (d)  waive,  release  or  forgive  any  indebtedness  owed  by  any
employees, officers or directors in excess of $250,000 in the aggregate.

Transfers.    Except  for  Permitted  Transfers,  Borrower  shall  not  voluntarily  or  involuntarily  transfer,  sell,
lease,  license,  lend  or  in  any  other  manner  convey  any  equitable,  beneficial  or  legal  interest  in  any  material
portion of their assets.

Mergers  or  Acquisitions.    uniQure  Holdings  shall  not  merge  or  consolidate,  or  permit  any  of  its
Subsidiaries  to  merge  or  consolidate,  with  or  into  any  other  business  organization  (other  than  mergers  or
consolidations  of  (i)  a  Subsidiary  into  an  Obligor,  or  (ii)  of  a  Subsidiary  which  is  not  an  Obligor  into  any
Subsidiary or into an Obligor, provided, in each case, that with respect to any merger into an Obligor, Obligor is
the surviving entity) or acquire, or permit any of its Subsidiaries to acquire, all or substantially all of the capital
stock or property of another Person.

Taxes.    Borrower  and  its  Subsidiaries  shall  pay  when  due  all  taxes,  fees  or  other  charges  of  any  nature
whatsoever  (together  with  any  related  interest  or  penalties)  now  or  hereafter  imposed  or  assessed  against
Borrower,  Lender  or  the  Collateral  or  upon  Borrower’s  ownership,  possession,  use,  operation  or  disposition
thereof or upon Borrower’s rents, receipts or earnings arising therefrom.  Borrower shall file on or before the due
date  therefor  all  personal  property  tax  returns  in  respect  of  the  Collateral.    Notwithstanding  the  foregoing,
Borrower  may  contest,  in  good  faith  and  by  appropriate  proceedings,  taxes  for  which  Borrower  maintains
adequate reserves therefor in accordance with Accounting Standards.

Corporate Changes.  Neither Borrower nor any Subsidiary shall change its corporate name, legal form or
jurisdiction  of  formation  without  twenty  (20)  days’  prior  written  notice  to  Lender.    Neither  Borrower  nor  any
Subsidiary shall relocate its principal place of business unless it has provided prior written notice to Lender and
such relocation is within the Netherlands or the United States or within the same country as its previous location.
 Neither Borrower nor any Subsidiary shall relocate any item of Collateral (other than (x) sales of movable assets
in the ordinary course of business, (y) relocations of movable assets having an aggregate value of up to $250,000
in  any  fiscal  year,  and  (z)  relocations  of  Collateral  from  a  location  described  on  Exhibit  C  to  another  location
described on Exhibit C) unless (i) it has provided prompt written notice to Lender, (ii) such relocation is within
the Netherlands or the United States or within the same country as its previous location, and (iii) if such relocation
is  to  a  third  party  bailee  in  the  United  States,  it  has  used  commercially  reasonable  efforts  to  deliver  a  bailee
agreement in form and substance reasonably acceptable to Lender.

Deposit Accounts.  No Obligor shall maintain any Deposit Accounts (other than (i) accounts consisting of
the  proceeds  from  the  Leasehold  Financing  so  long  as  the  aggregate  amount  in  such  accounts  do  not  exceed
$10,000,000  and  (ii)  payroll,  trust  or  escrow  accounts),  or  accounts  holding  Investment  Property,  except  with
respect to which Lender has an Account Control Agreement and/or a right of pledge (subject only to a Lien under
clause  (xii)  of  the  definition  of  Permitted  Liens);  provided  however,  Obligor  shall  (a)  obtain  Account  Control
Agreements  for  its  respective  accounts  at  Rabobank  National  Association  and  (b)  deliver  a  completed  and
executed Perfection Certificate, in each case, no later than 30 Business Days after the Restatement Date.

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Subsidiaries.  Borrower shall notify Lender of each Subsidiary formed subsequent to the Restatement Date
and,  within  15  days  of  formation,  shall  cause  any  such  Subsidiary  to  execute  and  deliver  to  Lender  a  Joinder
Agreement.

Pensions.    Borrower  shall  ensure  that  all  pension  schemes  operated  by  or  maintained  for  the  benefit  of
members of the Borrower and/or any of their employees are funded to the extent required by applicable law and
regulations where failure to do so would be reasonably likely to have a Material Adverse Effect.

Non-Obligors.    The  revenue  of  Subsidiaries  which  are  not  Obligors  shall  not  exceed  €250,000  in  the
aggregate on an annual basis.  The fair market value of the assets of Subsidiaries which are not Obligors shall not
exceed €500,000 in the aggregate at any given time.

Use of Proceeds.  Borrower agrees that the proceeds of the Loans shall be used solely to pay related fees
and  expenses  in  connection  with  this  Agreement  and  for  working  capital  and  general  corporate  purposes.   The
proceeds of the Loans will not be used in violation of applicable Anti-Corruption Laws or applicable Sanctions.

Compliance with Laws.

Borrower  shall  maintain,  and  shall  cause  its  Subsidiaries  to  maintain,  compliance  in  all  material  respect
with all applicable laws, rules or regulations (including any law, rule or regulation with respect to the making or
brokering of loans or financial accommodations), and shall, or cause its Subsidiaries to, obtain and maintain all
required  governmental  authorizations,  approvals,  licenses,  franchises,  permits  or  registrations  reasonably
necessary in connection with the conduct of Borrower’s business.

Neither Borrower nor any of its Subsidiaries shall, nor shall Borrower or any of its Subsidiaries permit any
Affiliate to, directly or indirectly, knowingly enter into any documents, instruments, agreements or contracts with
any Person listed on the OFAC Lists.  Neither Borrower nor any of its Subsidiaries shall, nor shall Borrower or
any  of  its  Subsidiaries,  permit  any  Affiliate  to,  directly  or  indirectly,  (i)  conduct  any  business  or  engage  in  any
transaction  or  dealing  with  any  Blocked  Person,  including,  without  limitation,  the  making  or  receiving  of  any
contribution  of  funds,  goods  or  services  to  or  for  the  benefit  of  any  Blocked  Person,  (ii)  deal  in,  or  otherwise
engage in any transaction relating to, any property or interests in property blocked pursuant to Executive Order
No. 13224 or any similar executive order or other Anti-Terrorism Law, or (iii) engage in or conspire to engage in
any transaction that evades or avoids, or has the purpose of evading or avoiding, or attempts to violate, any of the
prohibitions set forth in Executive Order No. 13224 or other Anti-Terrorism Law.

Borrower has implemented and maintains in effect policies and procedures designed to ensure compliance
by  the  Borrower,  its  Subsidiaries  and  their  respective  directors,  officers,  employees  and  agents  with  applicable
Anti-Corruption Laws and applicable Sanctions, and Borrower, its Subsidiaries and their respective officers and
employees  and  to  the  knowledge  of  Borrower  its  directors  and  agents,  are  in  compliance  with  applicable  Anti-
Corruption Laws and applicable Sanctions in all material respects.

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None of Borrower, any of its Subsidiaries or any of their respective directors, officers or employees, or to
the knowledge of Borrower, any agent for Borrower or its Subsidiaries that will act in any capacity in connection
with or benefit from the credit facility established hereby, is a Sanctioned Person.  No Loan, use of proceeds or
other  transaction  contemplated  by  this  Agreement  will  violate  applicable  Anti-Corruption  Laws  or  applicable
Sanctions.

Transactions  with  Affiliates.    Borrower  shall  not  and  shall  not  permit  any  Subsidiary  to,  directly  or
indirectly,  enter  into  or  permit  to  exist  any  transaction  of  any  kind  with  any  Affiliate  of  Borrower  or  such
Subsidiary on terms that are less favorable to Borrower or such Subsidiary, as the case may be, than those that
might  be  obtained  in  an  arm’s  length  transaction  from  a  Person  who  is  not  an  Affiliate  of  Borrower  or  such
Subsidiary; provided that no such restriction shall apply where the value of any transaction with any Affiliate of
Borrower is less than Five Hundred Thousand Dollars ($500,000).

Right to Invest.    Borrower  agrees  that,  prior  to  the  repayment  in  full  of  all  2021  Term  Loan  Advances,
Lender,  any  of  its  affiliates  and/or  (subject  to  Borrower's  consent,  which  consent  shall  not  be  unreasonably
withheld,  conditioned  or  delayed)  any  other  assignees  or  nominees,  shall  have  the  right,  in  their  discretion,  to
invest up to an aggregate amount of $2,000,000 in any Subsequent Financing on the same terms, conditions and
pricing afforded to others participating in any such Subsequent Financing, provided, however, that such aggregate
amount  for  any  such  Subsequent  Financing  may  be  reduced  to  an  amount  determined  in  good  faith  by  the
managing  underwriter  of  any  such  Subsequent  Financing  if  such  managing  underwriter  determines,  in  its
reasonable  discretion,  that  such  reduction  is  required  as  a  result  of  bona  fide  marketing  factors.  Borrower  shall
notify Lender within twenty-four (24) hours of the public announcement of any such Subsequent Financing and
Lender  shall  notify  Borrower  of  its  intention  to  participate  in  such  Subsequent  Financing  as  soon  as  possible
thereafter, but in any event, not later than eight (8) hours prior to the pricing of such Subsequent Financing.

EVENTS OF DEFAULT

The occurrence of any one or more of the following events shall be an Event of Default:

Payments.    Borrower  fails  to  pay  any  amount  when  due  under  this  Agreement  or  any  of  the  other  Loan
Documents  unless  its  failure  to  pay  is  caused  by  administrative  or  technical  error  and  payment  is  made  within
three Business Days of its due date; or

Covenants.    Borrower  breaches  or  defaults  in  the  performance  of  any  covenant  or  Secured  Obligation
under  this  Agreement,  or  any  of  the  other  Loan  Documents  (other  than  a  breach  or  default  covered  by
Section  8.1),  and  (a)  with  respect  to  a  default  under  any  covenant  under  this  Agreement  (other  than  under
Sections  6,  7.1(g),  7.5,  7.6,  7.7,  7.8,  7.9,  7.15,  7.16,  7.17  or  7.19)  such  default  continues  for  more  than  15
Business  Days  after  the  earlier  of  the  date  on  which  (i)  Agent  or  Lender  has  given  notice  of  such  default  to
Borrower  and  (ii)  Borrower  has  actual  knowledge  of  such  default  or  (b)  with  respect  to  a  default  under  any  of
Sections 6, 7.1(g), 7.5, 7.6, 7.7, 7.8, 7.9, 7.15, 7.16, 7.17 or 7.19, the occurrence of such default; or

Material  Adverse  Effect.    A  circumstance  (other  than  the  Extera  Judgment)  has  occurred  that  would

reasonably be expected to have a Material Adverse Effect; or

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Other  Loan  Documents.    The  occurrence  of  any  default  under  any  Loan  Document  and  such  default
continues  for  more  than  15  Business  Days  after  the  earlier  of  (a)  Lender  has  given  notice  of  such  default  to
Borrower, or (b) Borrower has actual knowledge of such default; or

Representations.  Any material representation or warranty made by Borrower in any Loan Document shall

have been false or misleading in any material respect; or

Insolvency.  Borrower (A) (i) shall make an assignment for the benefit of creditors; or (ii) shall be unable
to pay its debts as they become due, or be unable to pay or perform under the Loan Documents, or shall become
insolvent; or (iii) shall file a voluntary petition in bankruptcy; or (iv) shall file any petition, answer, or document
seeking for itself any reorganization, arrangement, composition, readjustment, liquidation, dissolution or similar
relief under any present or future statute, law or regulation pertinent to such circumstances; or (v) shall seek or
consent  to  or  acquiesce  in  the  appointment  of  any  trustee,  receiver,  or  liquidator  of  Borrower  or  of  all  or  any
substantial part (i.e., 33-1/3% or more) of the assets or property of Borrower; or (vi) shall cease operations of its
business  as  its  business  has  normally  been  conducted,  or  terminate  substantially  all  of  its  employees;
(vii) Borrower or its directors or majority shareholders shall take any action initiating any of the foregoing actions
described  in  clauses  (i)  through  (vi);  or  (B)  either  (i)  forty-five  (45)  days  shall  have  expired  after  the
commencement  of  an  involuntary  action  against  Borrower  seeking  reorganization,  arrangement,  composition,
readjustment,  liquidation,  dissolution  or  similar  relief  under  any  present  or  future  statute,  law  or  regulation,
without  such  action  being  dismissed  or  all  orders  or  proceedings  thereunder  affecting  the  operations  or  the
business of Borrower being stayed; or (ii) a stay of any such order or proceedings shall thereafter be set aside and
the  action  setting  it  aside  shall  not  be  timely  appealed;  or  (iii)  Borrower  shall  file  any  answer  admitting  or  not
contesting the material allegations of a petition filed against Borrower in any such proceedings; or (iv) the court in
which  such  proceedings  are  pending  shall  enter  a  decree  or  order  granting  the  relief  sought  in  any  such
proceedings; or (v) thirty (30) days shall have expired after the appointment, without the consent or acquiescence
of Borrower, of any trustee, receiver or liquidator of Borrower or of all or any substantial part of the properties of
Borrower without such appointment being vacated; or

Attachments; Judgments.  Any portion of Borrower’s assets is attached or seized, or a levy is filed against
any such assets (and such attachment, seizure or levy is not lifted or released within 30 days), or a judgment or
judgments (no longer subject to appeal) (excluding the Extera Judgment) is/are entered for the payment of money,
individually  or  in  the  aggregate,  of  at  least  $2,000,000,  unless  otherwise  waived  by  Lender  in  its  reasonable
discretion,  or  Borrower  is  enjoined  or  in  any  way  prevented  by  court  order  from  conducting  any  part  of  its
business; or

Other Obligations.  The occurrence of any default (beyond any applicable grace, appeal or cure periods)
under  any  agreement  or  obligation  of  Borrower  involving  any  Indebtedness  in  excess  of  $1,000,000,  or  the
occurrence of any default by the Borrower under any agreement or obligation of Borrower that could reasonably
be expected to have a Material Adverse Effect.

REMEDIES

General.  On and at any time after the occurrence of an Event of Default which is continuing (i) Lender

may, at its option, accelerate and demand payment of all or any part of the

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Secured  Obligations  and  the  2018  Prepayment  Charge  and  declare  them  to  be  immediately  due  and  payable
(provided, that upon the occurrence of an Event of Default of the type described in Section 8.6, all of the Secured
Obligations shall automatically be accelerated and made due and payable, in each case without any further notice
or  act),  and  (ii)  Lender  may  notify  any  of  Borrower's  account  debtors  to  make  payment  directly  to  Lender,
compromise the amount of any such account on Borrower's behalf and endorse Lender's name without recourse on
any such payment for deposit directly to Lender's account.

Collection; Foreclosure.  Unless otherwise agreed in the Collateral Documents, on and at any time after the
occurrence  of  an  Events  of  Default  which  is  continuing,  Lender  may,  at  any  time  or  from  time  to  time,  apply,
collect, liquidate, sell in one or more sales, lease or otherwise dispose of, any or all of the Collateral, in its then
condition or following any commercially reasonable preparation or processing, in such order as Lender may elect,
in each case to the extent permitted under applicable law.  Any such sale may be made either at public or private
sale at its place of business or elsewhere.  Borrower agrees that any such public or private sale may occur upon ten
(10) calendar days’ prior written notice to Borrower.  Lender may require Borrower to assemble the Collateral and
make it available to Lender at a place designated by Lender that is reasonably convenient to Lender and Borrower.
 The proceeds of any sale, disposition or other realization upon all or any part of the Collateral shall be applied by
Lender in the following order of priorities:

First,  to  Lender  in  an  amount  sufficient  to  pay  in  full  Lender’s  costs  and  professionals’  and
advisors’ fees and expenses as described in Section 11.11;

Second,  to  Lender  in  an  amount  equal  to  the  then  unpaid  amount  of  the  Secured  Obligations
(including principal, interest, and the Default Rate interest), in such order and priority as Lender
may choose in its sole discretion; and

Finally, after the full, final, and indefeasible payment in Cash of all of the Secured Obligations, to
any creditor holding a junior Lien on the Collateral, or to Borrower or its representatives or as a
court of competent jurisdiction may direct.

Lender shall be deemed to have acted reasonably in the custody, preservation and disposition of any of the

Collateral if it complies with the obligations of a secured party under the UCC.

No  Waiver.    Lender  shall  be  under  no  obligation  to  marshal  any  of  the  Collateral  for  the  benefit  of
Borrower or any other Person, and Borrower expressly waives all rights, if any, to require Lender to marshal any
Collateral.

Cumulative Remedies.   The  rights,  powers  and  remedies  of  Lender  hereunder  shall  be  in  addition  to  all
rights, powers and remedies given by statute or rule of law and are cumulative.  The exercise of any one or more
of the rights, powers and remedies provided herein shall not be construed as a waiver of or election of remedies
with respect to any other rights, powers and remedies of Lender.

39

MISCELLANEOUS

Severability.  Whenever possible, each provision of this Agreement shall be interpreted in such manner as
to be effective and valid under applicable law, but if any provision of this Agreement shall be prohibited by or
invalid under such law, such provision shall be ineffective only to the extent and duration of such prohibition or
invalidity, without invalidating the remainder of such provision or the remaining provisions of this Agreement.

Notice.  Except as otherwise provided herein, any notice, demand, request, consent, approval, declaration,
service  of  process  or  other  communication  (including  the  delivery  of  Financial  Statements)  that  is  required,
contemplated,  or  permitted  under  the  Loan  Documents  or  with  respect  to  the  subject  matter  hereof  shall  be  in
writing, and shall be deemed to have been validly served, given, delivered, and received upon the earlier of: (i) the
day of transmission by facsimile or hand delivery or delivery by an overnight express service or overnight mail
delivery  service;  or  (ii)  the  third  calendar  day  after  deposit  in  the  United  States  mails,  with  proper  first  class
postage prepaid, in each case addressed to the party to be notified as follows:

[*]

or to such other address as each party may designate for itself by like notice.

Entire  Agreement;  Amendments.    This  Agreement  and  the  other  Loan  Documents  constitute  the  entire
agreement  and  understanding  of  the  parties  hereto  in  respect  of  the  subject  matter  hereof  and  thereof,  and
supersede  and  replace  in  their  entirety  any  prior  proposals,  term  sheets,  non-disclosure  or  confidentiality
agreements,  letters,  negotiations  or  other  documents  or  agreements,  whether  written  or  oral,  with  respect  to  the
subject matter hereof or thereof (including Lender’s proposal letter dated November 8, 2018).  None of the terms
of  this  Agreement  or  any  of  the  other  Loan  Documents  may  be  amended  except  by  an  instrument  executed  by
each of the parties hereto.

No Strict Construction.  The parties hereto have participated jointly in the negotiation and drafting of this
Agreement.    In  the  event  an  ambiguity  or  question  of  intent  or  interpretation  arises,  this  Agreement  shall  be
construed as if drafted jointly by the parties hereto and no presumption or burden of proof shall arise favoring or
disfavoring any party by virtue of the authorship of any provisions of this Agreement.

No  Waiver.    The  powers  conferred  upon  Lender  by  this  Agreement  are  solely  to  protect  its  rights
hereunder and under the other Loan Documents and its interest in the Collateral and shall not impose any duty
upon Lender to exercise any such powers.  No omission or delay by Lender at any time to enforce any right or
remedy reserved to it, or to require performance of any of the terms, covenants or provisions hereof by Borrower
at any time designated, shall be a waiver of any such right or remedy to which Lender is entitled, nor shall it in
any way affect the right of Lender to enforce such provisions thereafter.

Survival.  All agreements, representations and warranties contained in this Agreement and the other Loan

Documents or in any document delivered pursuant hereto or thereto shall be

40

for  the  benefit  of  Lender  and  shall  survive  the  execution  and  delivery  of  this  Agreement  and  the  expiration  or
other termination of this Agreement.

Successors and Assigns.  The provisions of this Agreement and the other Loan Documents shall inure to
the  benefit  of  and  be  binding  on  Borrower  and  its  permitted  assigns  (if  any).    Borrower  shall  not  assign  its
obligations  under  this  Agreement  or  any  of  the  other  Loan  Documents  without  Lender’s  express  prior  written
consent,  and  any  such  attempted  assignment  shall  be  void  and  of  no  effect.    Lender  may  assign,  transfer,  or
endorse its rights hereunder and under the other Loan Documents without prior notice to Borrower, and all of such
rights shall inure to the benefit of Lender’s successors and assigns.

Governing Law.  This Agreement and the other Loan Documents shall be governed by, and construed and

enforced in accordance with, the laws of the Netherlands.

Jurisdiction.  The courts (Rechtbank) of Amsterdam, the Netherlands, subject to ordinary appeal and final
appeal  shall  have  exclusive  jurisdiction  to  hear  and  determine  any  suit,  action  or  proceeding  and  to  settle  any
disputes arising out of or in connection with this Agreement and the other Loan Documents (including a dispute
regarding the existence, validity or termination of this Agreement or the consequences of its nullity) and, for such
purposes,  each  of  the  parties  hereto  irrevocably  submits  to  the  exclusive  jurisdiction  of  such  courts.    This
Section is for the benefit of the Lender only.  As a result, the Lender may take proceedings relating to a dispute in
any other courts with jurisdiction.  To the extent allowed by law, the Lender may take concurrent proceedings in
any number of jurisdictions.

Professional  Fees.    Borrower  promises  to  pay  Lender’s  documented  out-of-pocket  fees  and  expenses
necessary to finalize the loan documentation, including but not limited to reasonable documented attorneys’ fees,
UCC  searches,  filing  costs,  and  other  miscellaneous  expenses  up  to  a  maximum  amount  of  $10,000  and  Agent
confirms  as  of  the  Restatement  Date  that  there  are  no  other  legal  fees  owing  as  of  such  date.    In  addition,
Borrower  promises  to  pay  any  and  all  reasonable  documented  attorneys’  and  other  professionals’  fees  and
expenses  (including  fees  and  expenses  of  in-house  counsel)  incurred  by  Lender  after  the  Restatement  Date  in
connection with or related to: (a) the Loan; (b) the administration, collection, or enforcement of the Loan; (c) the
amendment  or  modification  of  the  Loan  Documents;  (d)  any  waiver,  consent,  release,  or  termination  under  the
Loan  Documents;  (e)  the  protection,  preservation,  sale,  lease,  liquidation,  or  disposition  of  Collateral  or  the
exercise of remedies with respect to the Collateral; (f) any legal, litigation, administrative, arbitration, or out of
court proceeding in connection with or related to Borrower or the Collateral, and any appeal or review thereof;
and  (g)  any  bankruptcy,  restructuring,  reorganization,  assignment  for  the  benefit  of  creditors,  workout,
foreclosure,  or  other  action  related  to  Borrower,  the  Collateral,  the  Loan  Documents,  including  representing
Lender in any adversary proceeding or contested matter commenced or continued by or on behalf of Borrower’s
estate, and any appeal or review thereof.

Confidentiality.  Lender acknowledges that all financial statements provided to Lender by Borrower and
certain  items  of  Collateral  and  information  provided  to  Lender  by  Borrower  are  confidential  and  proprietary
information of Borrower, if and to the extent such information either (x) is marked as confidential by Borrower at
the  time  of  disclosure,  or  (y)  should  reasonably  be  understood  to  be  confidential  (the  “Confidential
Information”).  Accordingly, Lender agrees

41

that any Confidential Information it may obtain in the course of acquiring, administering, or perfecting Lender’s
security interest in the Collateral shall not be disclosed to any other person or entity in any manner whatsoever, in
whole  or  in  part,  without  the  prior  written  consent  of  Borrower,  except  that  Lender  may  disclose  any  such
information: (a) to its own directors, officers, employees, accountants, counsel and other professional advisors and
to  its  affiliates  if  Lender  in  its  sole  discretion  determines  that  any  such  party  should  have  access  to  such
information in connection with such party’s responsibilities in connection with the Loan or this Agreement and,
provided that such recipient of such Confidential Information either (i) agrees to be bound by the confidentiality
provisions  of  this  paragraph  or  (ii)  is  otherwise  subject  to  confidentiality  restrictions  that  reasonably  protect
against  the  disclosure  of  Confidential  Information;  (b)  if  such  information  is  generally  available  to  the  public;
(c)  if  required  or  appropriate  in  any  report,  statement  or  testimony  submitted  to  any  governmental  authority
having or claiming to have jurisdiction over Lender; (d) if required or appropriate in response to any summons or
subpoena or in connection with any litigation, to the extent permitted or deemed advisable by Lender’s counsel;
(e) to comply with any legal requirement or law applicable to Lender; (f) to the extent reasonably necessary in
connection with the exercise of any right or remedy under any Loan Document, including Lender’s sale, lease, or
other disposition of Collateral after the occurrence and during the continuance of an Event of Default; (g) to any
participant  or  assignee  of  Lender  or  any  prospective  participant  or  assignee;  provided,  that  such  participant  or
assignee or prospective participant or assignee agrees in writing to be bound by this Section prior to disclosure; or
(h)  otherwise  with  the  prior  consent  of  Borrower;  provided,  that  any  disclosure  made  in  violation  of  this
Agreement  shall  not  affect  the  obligations  of  Borrower  or  any  of  its  affiliates  or  any  guarantor  under  this
Agreement or the other Loan Documents.

Assignment of Rights.    Borrower  acknowledges  and  understands  that  Lender  may  sell  and  assign  all  or
part of its interest hereunder and under the Loan Documents to any person or entity (an “Assignee”).  After such
assignment the term “Lender” as used in the Loan Documents shall mean and include such Assignee, and such
Assignee shall be vested with all rights, powers and remedies of Lender hereunder with respect to the interest so
assigned;  but  with  respect  to  any  such  interest  not  so  transferred,  Lender  shall  retain  all  rights,  powers  and
remedies hereby given.  No such assignment by Lender shall relieve Borrower of any of its obligations hereunder.
 Lender agrees that in the event of any transfer by it of the Note(s) (if any), it will endorse thereon a notation as to
the portion of the principal of the Note(s), which shall have been paid at the time of such transfer and as to the
date to which interest shall have been last paid thereon.

Revival of Secured Obligations.  This Agreement and the Loan Documents shall remain in full force and
effect and continue to be effective if any petition is filed by or against Borrower for liquidation or reorganization,
if  Borrower  becomes  insolvent  or  makes  an  assignment  for  the  benefit  of  creditors,  if  a  receiver  or  trustee  is
appointed  for  all  or  any  significant  part  of  Borrower’s  assets,  or  if  any  payment  or  transfer  of  Collateral  is
recovered from Lender.  The Loan Documents and the Secured Obligations and Collateral security shall continue
to be effective, or shall be revived or reinstated, as the case may be, if at any time payment and performance of the
Secured Obligations or any transfer of Collateral to Lender, or any part thereof is rescinded, avoided or avoidable,
reduced in amount, or must otherwise be restored or returned by, or is recovered from, Lender or by any obligee
of  the  Secured  Obligations,  whether  as  a  “voidable  preference,”  “fraudulent  conveyance,”  or  otherwise,  all  as
though such payment,

42

performance, or transfer of Collateral had not been made.  In the event that any payment, or any part thereof, is
rescinded,  reduced,  avoided,  avoidable,  restored,  returned,  or  recovered,  the  Loan  Documents  and  the  Secured
Obligations  shall  be  deemed,  without  any  further  action  or  documentation,  to  have  been  revived  and  reinstated
except to the extent of the full, final, and indefeasible payment to Lender in Cash.

Counterparts.    This  Agreement  and  any  amendments,  waivers,  consents  or  supplements  hereto  may  be
executed  in  any  number  of  counterparts,  and  by  different  parties  hereto  in  separate  counterparts,  each  of  which
when so delivered shall be deemed an original, but all of which counterparts shall constitute but one and the same
instrument.

Publicity.

Borrower  consents  to  the  publication  and  use  by  Lender  and  any  of  its  member  businesses  and
affiliates of (i) Borrower’s name (including a brief description of the relationship between Borrower and Lender)
and logo for use on Lender’s website and as required for the purposes of filings with or reports to governmental
authorities required by law, and (ii) after review and approval by Borrower (a) Borrower’s name and a hyperlink
to  Borrower’s  web  site,  separately  or  together,  in  written  and  oral  presentations,  advertising,  promotional  and
marketing  materials,  client  lists,  public  relations  materials  or  on  its  web  site  (together,  the  “Lender  Publicity
Materials”); (b) the names of officers of Borrower in the Lender Publicity Materials; and (c) Borrower’s name,
trademarks or servicemarks in any news release concerning Lender.

Neither Borrower nor any of its member businesses and affiliates shall, without Lender’s consent,
publicize or use, for any purpose other than filings with or reports to governmental authorities required by law and
the  rules  of  any  applicable  securities  commission  or  securities  exchange,  (i)  Lender’s  name  (including  a  brief
description of the relationship between Borrower and Lender), logo or hyperlink to Lender’s web site, separately
or together, in written and oral presentations, advertising, promotional and marketing materials, client lists, public
relations materials or on its web site (together, the “Borrower Publicity Materials”); (ii) the names of officers of
Lender  in  the  Borrower  Publicity  Materials;  and  (iii)  Lender’s  name,  trademarks,  servicemarks  in  any  news
release concerning Borrower.

Existing  Loan  and  Security  Agreement  Amended  and  Restated.    Upon  satisfaction  of  the  conditions
precedent to the effectiveness of this Agreement, (a) this Agreement shall amend and restate the Existing Loan
and Security Agreement in its entirety (except to the extent that definitions from the Existing Loan and Security
Agreement  are  incorporated  herein  by  reference)  and  (b)  the  rights  and  obligations  of  the  parties  under  the
Existing Loan and Security Agreement shall be subsumed within, and be governed by, this Agreement; provided,
however, that the Borrower hereby agrees that all Secured Obligations of the Borrower under, and as defined in,
the  Existing  Loan  and  Security  Agreement  and  the  other  Loan  Documents  shall  remain  outstanding,  shall
constitute continuing Secured Obligations secured by the Collateral, and this Agreement shall not be deemed to
evidence or result in a novation or repayment and re-borrowing of such obligations and other liabilities.  Borrower
hereby acknowledges and reaffirms each and every Loan Document entered into in connection with the Existing
Loan and Security Agreement and acknowledges that each such Loan Document remains in full force and effect
and enforceable against Borrower in accordance with its respective terms after giving

43

effect to the execution and delivery of this Agreement without further action by Lender, Borrower or any other
Person.  All reference to the “Loan and Security Agreement” in each such Loan Document shall be deemed to be a
reference to this Agreement.

Agency.  Lender hereby irrevocably appoints HERCULES CAPITAL, INC. to act on its behalf as agent
hereunder and under the other Loan Documents and authorizes the agent to take such actions on its behalf and to
exercise such powers as are delegated to the agent by the terms hereof or thereof, together with such actions and
powers as are reasonably incidental thereto.

(SIGNATURES TO FOLLOW)

44

LENDER:

HERCULES CAPITAL, INC.

Signature:

Print Name:

Title:

IN  WITNESS  WHEREOF,  the  Obligors  and  Lender  have  duly  executed  and  delivered  this  Loan  and

Security Agreement as of the day and year first above written.

BORROWER:

UNIQURE BIOPHARMA B.V.
by: uniQure N.V., its Managing Director

Signature: 
Print Name:  Matt Kapusta
Title:  Managing Director

UNIQURE, INC. 

Signature: 
Print Name:  Matt Kapusta
Title:  President and Secretary

OBLIGORS:

UNIQURE N.V. (formerly uniQure B.V.)

Signature: 
Print Name: Matt Kapusta
Title: Managing Director

UNIQURE RESEARCH B.V.
by: uniQure Biopharma RV.,
the Company’s Managing Director
by: uniQure N.V., its Managing Director

Signature: 
Print Name: Matt Kapusta
Title:  Managing Director

  
 
  
 
  
 
  
 
UNIQURE ASSAY DEVELOPMENT 
by: uniQure Biopharma B.V.,
the Company’s Managing Director
by: uniQure N.V., its Managing Director

Signature:
Print Name: Matt Kapusta
Title: Managing Director

UNIQURE QA B.V.
by: uniQure Biopharma B.V.,
the Company’s Managing Director
by: uniQure N.V., its Managing Director
Print Name:  Matt Kapusta
Title:  Managing Director

UNIQURE PROCESS DEVELOPMENT B.V.
by: uniQure .Biopharma B.V.,
the Company’s Managing Director
by: uniQure N.V., its Managing Director

Signature: 
Print Name:  Matt Kapusta
Title: Managing Director

UNIQURE, NON CLINICAL B.V.
by: uniQure Biopharma B.V.,
the Company’s Managing Director
by: uniQure N.V., its Managing Director

Signature: 
Print Name:  Matt Kapusta
Title: Managing Director

UNIQURE CLINICAL B.V.
by: uniQure Biopharma B.V.,
the Company’s Managing Director
Signature: 
Print Name:  Matt Kapusta
Title: Managing Director

  
 
  
 
  
 
  
 
UNIQURE IP B.V.
by uniQure N.V. ,
the Company’s Managing Director
Signature: 

Print Name:  Matt Kapusta
Title:  Managing Director

  
 
IN  WITNESS  WHEREOF,  the  Obligors  and  Lender  have  duly  executed  and  delivered  this  Loan  and

Security Agreement as of the day and year first above written.

UNIQURE GmbH 

Signature: 
Print Name: Christian Klemt 
Title: Managing Director

  
 
Table of Addenda, Exhibits and Schedules

Exhibit A:

Exhibit B:

Exhibit C:

Advance Request
Attachment to Advance Request

Note

Name, Locations, and Other Information for Borrower

Exhibit D:

Borrower’s Patents, Trademarks, Copyrights and Licenses

Exhibit E:

Exhibit F:

Exhibit G:

Exhibit H:

Borrower’s Deposit Accounts and Investment Accounts

Compliance Certificate

Joinder Agreement

ACH Debit Authorization Agreement

Schedule 1

Subsidiaries

Schedule 1.1

Commitments

Schedule 1A

Existing Permitted Indebtedness

Schedule 1B

Existing Permitted Investments

Schedule 1C

Existing Permitted Liens

Schedule 5.3

Consents, Etc.

Schedule 5.5

Actions Before Governmental Authorities

Schedule 5.8

Tax Matters

Schedule 5.9

Intellectual Property Claims

Schedule 5.10

Intellectual Property

Schedule 5.11 Borrower Products

Schedule 5.14 Capitalization

To: Lender:

Date                                      , 20    

EXHIBIT A
ADVANCE REQUEST

HERCULES CAPITAL, INC.
400 Hamilton Avenue, Suite 310
Palo Alto, CA 94301
Facsimile: [*]
Email: [*]
Attn: Chief Legal Officer and [*]

UNIQURE  BIOPHARMA  B.V.,  and  UNIQURE,  INC.,  (hereinafter  collectively  referred  to  as
“Borrower”) hereby requests from HERCULES CAPITAL, INC. (“Lender”) a 2021 Term Loan Advance in the
amount of _________________Dollars ($_______________) on                                       (the “Advance Date”)
pursuant to the Second Amended and Restated Loan and Security Agreement between, among others, Borrower
and Lender (the “Agreement”).  Capitalized words and other terms used but not otherwise defined herein are used
with the same meanings as defined in the Agreement.

SECTION 1. Please:

Issue a check payable to Borrower                                      

(a)

or

(h) Wire Funds to Borrower’s account                                      

Bank:
Address:
ABA Number:
Account Number:
Account Name:

Borrower represents that the conditions precedent to the Advance set forth in the Agreement are satisfied
and shall be satisfied upon the making of such Advance, including but not limited to: (i) that no event that has had
or could reasonably be expected to have a Material Adverse Effect has occurred and is continuing; (ii) that the
representations and warranties set forth in the Agreement are and shall be true and correct in all material respects
on and as of the Advance Date with the same effect as though made on and as of such date, except to the extent
such representations and warranties expressly relate to an earlier date; (iii) that Borrower is in compliance with all
the terms and provisions set forth in each Loan Document on its part to be observed or performed; and (iv) that as
of  the  Advance  Date,  no  fact  or  condition  exists  that  would  (or  would,  with  the  passage  of  time,  the  giving  of
notice,  or  both)  constitute  an  Event  of  Default  under  the  Loan  Documents.    Borrower  understands  and
acknowledges  that  Lender  has  the  right  to  review  the  financial  information  supporting  this  representation  and,
based upon such review in its sole discretion, Lender may decline to fund the requested Advance.

Borrower  hereby  represents  that  Borrower’s  corporate  status  and  principal  place  of  business  have  not
changed since the date of the Agreement or, if the Attachment to this Advance Request is completed, are as set
forth in the Attachment to this Advance Request.

Borrower agrees to notify Lender promptly before the funding of the Advance if any of the matters which
have been represented above shall not be true and correct on the Advance Date and if Lender has received no such
notice before the Advance Date then the statements set forth above shall be deemed to have been made and shall
be deemed to be true and correct as of the Advance Date.

Executed as of [                                     ], 2021

BORROWER:

UNIQURE BIOPHARMA B.V.
by: uniQure N.V., its Managing Director

Signature: 
Print Name:  Matt Kapusta
Title:  Managing Director

UNIQURE, INC. 

Signature: 
Print Name:  Matt Kapusta
Title:  President and Secretary

ATTACHMENT TO ADVANCE REQUEST

Dated: __________

  
 
  
 
Borrower hereby represents and warrants to Lender that Borrower’s current name and organizational status

is as follows:

Name:

Type of organization:

State of organization:

Organization file number:

Borrower hereby represents and warrants to Lender that the street addresses, cities, states and postal codes

of its current locations are as follows:

EXHIBIT B
SECOND AMENDED AND RESTATED PROMISSORY NOTE

SECTION 2. $                                      

Maturity Date                                      , 20    

FOR  VALUE  RECEIVED,  (i)  UNIQURE  BIOPHARMA  B.V.,  a  private  limited  liability  company
incorporated  and  existing  under  the  laws  of  the  Netherlands,  having  its  corporate  seat  at  Amsterdam,  the
Netherlands  and  registered  at  the  trade  register  of  the  Chamber  of  Commerce  for  Amsterdam  under  number
34275365  (“uniQure  Bio”),  (ii)  UNIQURE,  Inc.,  a  Delaware  corporation  (“US  Borrower”  and  together  with
uniQure  Bio  hereinafter  collectively  referred  to  as  “Borrower”)  hereby  promises  to  pay  to  the  order  of
[HERCULES CAPITAL FUNDING TRUST 2014-1, a Delaware statutory trust][ HERCULES CAPITAL, INC., a
Maryland corporation] (the “Lender”) or the holder of this Second Amended and Restated Promissory Note (this
“Promissory Note”) at 400 Hamilton Avenue, Suite 310, Palo Alto, CA 94301 or such other place of payment as
the holder of this Promissory Note may specify from time to time in writing, in lawful money of the United States
of  America,  the  principal  amount  of  _____________________  Dollars  ($______________)  or  such  other
principal amount as Lender has advanced to

Borrower,  together  with  interest  at  a  floating  rate  as  set  forth  in  Section  [2.1.1(d)][2.1.2(d)]  of  the  Loan

Agreement referenced below.

This  Promissory  Note  is  the  Note  referred  to  in,  and  is  executed  and  delivered  in  connection  with,  that
certain Second Amended and Restated Loan and Security Agreement dated May 6, 2016, by and between, among
others,  Borrower  and  Lender  (as  the  same  may  from  time  to  time  be  amended,  modified  or  supplemented  in
accordance  with  its  terms,  the  “Loan  Agreement”),  and  is  entitled  to  the  benefit  and  security  of  the  Loan
Agreement and the other Loan Documents (as defined in the Loan Agreement), to which reference is made for a
statement  of  all  of  the  terms  and  conditions  thereof.   All  payments  shall  be  made  in  accordance  with  the  Loan
Agreement.  All terms defined in the Loan Agreement shall have the same definitions when used herein, unless
otherwise  defined  herein.   An  Event  of  Default  under  the  Loan  Agreement  shall  constitute  a  default  under  this
Promissory Note.

Borrower  agrees  to  make  all  payments  under  this  Promissory  Note  without  setoff,  recoupment  or
deduction and regardless of any counterclaim or defense.  This Promissory Note has been negotiated and delivered
to Lender and is payable in the State of California.  This Promissory Note shall be governed by and construed and
enforced in accordance with, the laws of the Netherlands, excluding any conflicts of law rules or principles that
would cause the application of the laws of any other jurisdiction.

BORROWER:

UNIQURE BIOPHARMA B.V.
by: uniQure N.V., its Managing Director

Signature: 
Print Name:  Matt Kapusta
Title:  Managing Director

UNIQURE, INC. 

Signature: 
Print Name:  Matt Kapusta
Title:  President and Secretary

  
 
  
 
EXHIBIT C
NAME, LOCATIONS, AND OTHER INFORMATION FOR BORROWER

1.

uniQure US represents and warrants to Agent that its current name and organizational status as of

the First Amendment Closing Date is as follows:

Name:
Type of organization:
State of organization:
Organization file number:

UNIQURE, INC.
Corporation
Delaware
5330494

2.

uniQure represents and warrants to Agent that its current name and organizational status as of the

First Amendment Closing Date is as follows:

Name:
Type of organization:
State of organization:
Organization file number:

UNIQURE BIOPHARMA B.V.
Private Limited Company
The Netherlands
34275365

3.

Borrower  represents  and  warrants  to  Agent  that  for  five  (5)  years  prior  to  the  First  Amendment

Closing Date, Borrower did not do business under any other name or organization or form.

4.

Borrower represents and warrants to Agent that its principal executive office is at Paasheuvelweg

25a, 1105 BP Amsterdam, the Netherlands.

EXHIBIT D
BORROWER’S PATENTS, TRADEMARKS, COPYRIGHTS AND LICENSES

[PROVIDED SEPARATELY]

EXHIBIT E
BORROWER’S DEPOSIT ACCOUNTS AND INVESTMENT ACCOUNTS

[*]

EXHIBIT F
COMPLIANCE CERTIFICATE

SECTION 3. Hercules Capital, Inc. (as “Agent”)
400 Hamilton Avenue, Suite 310
Palo Alto, CA 94301
SECTION 4. Facsimile: [*]
SECTION 5. Email: [*]
SECTION 6. Attn: [*]

Reference is made to that certain Second Amended and Restated Loan and Security Agreement dated May
6, 2016 and the Loan Documents (as defined therein) entered into in connection with such Second Amended and
Restated  Loan  and  Security  Agreement  all  as  may  be  amended  from  time  to  time  (hereinafter  referred  to
collectively as the “Loan Agreement”) by and among Hercules Capital, Inc. (the “Agent”), the several banks and
other  financial  institutions  or  entities  from  time  to  time  party  thereto  (collectively,  the  “Lender”)  and  Hercules
Capital,  Inc.,  as  agent  for  the  Lender  (the  “Agent”)  and  UNIQURE  BIOPHARMA  B.V.  and  UNIQURE,  Inc.,
(hereinafter  collectively  referred  to  as  "Borrower"),  as  Borrower.  All  capitalized  terms  not  defined  herein  shall
have the same meaning as defined in the Loan Agreement.

The  undersigned  is  an  Officer  of  UNIQURE  N.V.,  knowledgeable  of  all  UNIQURE  N.V.'s  financial
matters, and is authorized to provide certification of information regarding UNIQURE N.V.; hereby certifies that
in  accordance  with  the  terms  and  conditions  of  the  Loan  Agreement,  UNIQURE  N.V.  is  in  compliance  for  the
period  ending  _______________  of  all  covenants,  conditions  and  terms  and  hereby  reaffirms  that  all
representations and warranties contained therein are true and correct in all material respects on and as of the date
of this Compliance Certificate with the same effect as though made on and as of such date, except to the extent
such  representations  and  warranties  expressly  relate  to  an  earlier  date,  after  giving  effect  in  all  cases  to  any
standard(s) of materiality contained in the Loan Agreement as to such representations and warranties. Attached
are  the  required  documents  supporting  the  above  certification.  The  undersigned  further  certifies  that  these  are
prepared in accordance with Accounting Standards (except for the absence of footnotes with respect to unaudited
financial  statement  and  subject  to  normal  year-end  adjustments)  and  are  consistent  from  one  period  to  the  next
except as explained below.

SECTION 7. REPORTING REQUIREMENT

REQUIRED CHECK IF ATTACHED

SECTION 8. Interim Financial Statements

Monthly within 30 days

SECTION 9. Interim Financial Statements

Quarterly within 60 days

SECTION 10. Audited Financial Statements

FYE within 180 days

SECTION 11. Total Cash Balance      $                                     

SECTION 12. US Accounts Balance  $                                     

Very Truly Yours,

UNIQURE N.V. 

Signature: 

Print Name: 

Title:

  
 
  
 
EXHIBIT G
FORM OF JOINDER AGREEMENT

This Joinder Agreement (the “Joinder Agreement”) is made and dated as of [                   ], 20[        ], and
is entered into by and between                                      , a                                       corporation (“Subsidiary”), and
HERCULES CAPITAL FUNDING TRUST 2014-1, a Delaware statutory trust, as agent on behalf itself and other
lenders (collectively, “Lender”).

RECITALS

A.

Subsidiary’s  Affiliates,  (i)  UNIQURE  BIOPHARMA  B.V.,  and  UNIQURE,  INC.,  (hereinafter
collectively  referred  to  as  “Borrower”)  have,  among  others,  entered  into  that  certain  Second  Amended  and
Restated Loan and Security Agreement dated May 6, 2016, with the lenders party thereto, as such agreement may
be amended (the “Loan Agreement”), together with the other agreements executed and delivered in connection
therewith;

B.

Subsidiary  acknowledges  and  agrees  that  it  will  benefit  both  directly  and  indirectly  from
Borrower’s  execution  of  the  Loan  Agreement  and  the  other  agreements  executed  and  delivered  in  connection
therewith;

NOW THEREFORE, Subsidiary and Lender agree as follows:

AGREEMENT

1.

The  recitals  set  forth  above  are  incorporated  into  and  made  part  of  this  Joinder  Agreement.

 Capitalized terms not defined herein shall have the meaning provided in the Loan Agreement.

2.

By signing this Joinder Agreement, Subsidiary shall be bound by the terms and conditions of the
Loan  Agreement  the  same  as  if  it  were  the  Borrower  (as  defined  in  the  Loan  Agreement)  under  the  Loan
Agreement, mutatis mutandis, provided however, that Lender shall have no duties, responsibilities or obligations
to Subsidiary arising under or related to the Loan Agreement or the other agreements executed and delivered in
connection therewith.  Rather, to the extent that Lender has any duties, responsibilities or obligations arising under
or related to the Loan Agreement or the other agreements executed and delivered in connection therewith, those
duties,  responsibilities  or  obligations  shall  flow  only  to  Borrower  and  not  to  Subsidiary  or  any  other  person  or
entity.  By way of example (and not an exclusive list): (a) Lender’s providing notice to Borrower in accordance
with  the  Loan  Agreement  or  as  otherwise  agreed  between  Borrower  and  Lender  shall  be  deemed  provided  to
Subsidiary;  (b)  a  Lender’s  providing  an  Advance  to  Borrower  shall  be  deemed  an  Advance  to  Subsidiary;  and
(c) Subsidiary shall have no right to request an Advance or make any other demand on Lender.

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

[SIGNATURE PAGE TO JOINDER AGREEMENT]

SECTION 13. SUBSIDIARY:

By: 
Name: 
Title: 
Address: 
Telephone: 
Facsimile: 

SECTION 14. HERCULES CAPITAL, INC., as agent for Lender

By: 
Name: 
Title: 

Address: 
400 Hamilton Ave., Suite 310 
Palo Alto, CA 94301 
Facsimile:  [*] 
Telephone: [*]
SECTION 15. [*]

  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
EXHIBIT H
ACH DEBIT AUTHORIZATION AGREEMENT

SECTION 16. Hercules Capital, Inc. (as “Agent”)
400 Hamilton Avenue, Suite 310
Palo Alto, CA 94301
SECTION 17. Facsimile: [*]
SECTION 18. Email: [*]
SECTION 19. Attn: [*]

SECTION 20. Re:

Second Amended and Restated Loan and Security Agreement dated May 2016 between,

among others, (i) UNIQURE BIOPHARMA B.V., and UNIQURE, INC., (hereinafter collectively referred
to as “Borrower”), the lenders party thereto and HERCULES CAPITAL FUNDING TRUST 2014-1 as
agent for itself and the lenders (collectively, “Lender”) (the “Agreement”)

SECTION 21. In connection with the above referenced Agreement, Borrower hereby authorizes the Lender to 
initiate debit entries for the periodic payments due under the Agreement to Borrower’s account indicated below.  
Borrower authorizes the depository institution named below to debit to such account.

DEPOSITORY NAME

BRANCH

CITY

STATE AND ZIP CODE

TRANSIT/ABA NUMBER

ACCOUNT NUMBER

SECTION 22. This authority will remain in full force and effect so long as any amounts are due under the
Agreement.

SECTION 23.
(Borrower)(Please Print)

By:
Date:

                                                                          
                                                                          
                                                                          
                                                                          
                                                                          
                                                                          
[*]

SCHEDULE 1
LIST OF SUBSIDIARIES

Exhibit A to Amendment No. 2 to Loan and Security Agreement

SCHEDULE 1.1
COMMITMENTS

2018 TERM LOAN ADVANCES

LENDER

TRANCHE

COMMITMENT ADVANCES

HERCULES CAPITAL,
INC.
HERCULES CAPITAL
FUNDING TRUST 2018-
1
HERCULES CAPITAL
FUNDING TRUST 2019-
1

TOTAL

2018 Term A Loan
Advance
2018 Term A Loan
Advance

2018 Term A Loan
Advance

$0

$0

$0

$0

OUTSTANDING AS OF
SECOND
AMENDMENT
CLOSING DATE
$7,000,000

$13,000,000

$15,000,000

$35,000,000

2021 TERM LOAN ADVANCES

LENDER
HERCULES CAPITAL, INC.

COMMITMENT
$100,000,000
TOTAL COMMITMENTS $100,000,000

SECTION 24.

Exhibit A to Amendment No. 2 to Loan and Security Agreement

[*]

SCHEDULE 1A
INDEBTEDNESS

Exhibit A to Amendment No. 2 to Loan and Security Agreement

[*]

SCHEDULE 1B
INVESTMENTS

Exhibit A to Amendment No. 2 to Loan and Security Agreement

[*]

SCHEDULE 1C
LIENS

Exhibit A to Amendment No. 2 to Loan and Security Agreement

[*]

SCHEDULE 5.3
CONSENTS, ETC.

Exhibit A to Amendment No. 2 to Loan and Security Agreement

SCHEDULE 5.5
ACTIONS BEFORE GOVERNMENTAL AUTHORITIES

[*]

Exhibit A to Amendment No. 2 to Loan and Security Agreement

[*]

SCHEDULE 5.8
TAX MATTERS

Exhibit A to Amendment No. 2 to Loan and Security Agreement

SCHEDULE 5.9
INTELLECTUAL PROPERTY CLAIMS

[*]

Exhibit A to Amendment No. 2 to Loan and Security Agreement

SCHEDULE 5.10
INTELLECTUAL PROPERTY

[*]

Exhibit A to Amendment No. 2 to Loan and Security Agreement

[*]

SCHEDULE 5.11
BORROWER PRODUCTS

Exhibit A to Amendment No. 2 to Loan and Security Agreement

SCHEDULE 5.14
CAPITALIZATION

Capitalization – see SEC Form 20-F published on 4 April 2016 or Dutch annual accounts

Subsidiaries – see Schedule 1

Exhibit A to Amendment No. 2 to Loan and Security Agreement

March 1, 2021

Name of Subsidiary
uniQure biopharma B.V.
uniQure IP B.V.
uniQure Inc.

SUBSIDIARIES OF UNIQURE N.V.

Jurisdiction of Organization

The Netherlands
The Netherlands
Delaware

Exhibit 21.1

    
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Exhibit 23.1

The Board of Directors
uniQure N.V.:

We consent to the incorporation by reference in the registration statements (No. 333-225636) on Form S-3 and (No. 333-
225629, No. 333-222051, No. 333-218005 and No. 333-197887) on Form S-8 of uniQure N.V. of our report dated March 1,
2021,  with  respect  to  the  consolidated  balance  sheets  of  uniQure  N.V.  as  of  December  31,  2020  and  2019,  the  related
consolidated  statements  of  operations  and  comprehensive  loss,  shareholders’  equity,  and  cash  flows  for  the  years  then
ended, and the related notes, and the effectiveness of internal control over financial reporting as of December 31, 2020,
which report appears in the 2020 Annual Report on Form 10-K of uniQure N.V. Our report refers to a change in accounting
for leases due to the adoption of ASC Topic 842 Leases.

/s/ KPMG Accountants N.V.

Amstelveen, the Netherlands
March 1, 2021

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 333-225636) and
Form S-8 (No. 333-225629, No. 333-222051, No. 333-218005 and No. 333-197887) of uniQure N.V. of our report dated
February 28, 2019 relating to the financial statements, which appears in this Form 10-K.

Exhibit 23.2

/s/ R.M.N. Admiraal RA

PricewaterhouseCoopers Accountants N.V.
Amsterdam, the Netherlands

March 1, 2021

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
March 1, 2021

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 31.2

Certification of Chief Financial 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
Principal Financial Officer
March 1, 2021

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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,
2020, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, Matthew
Kapusta, Chief Executive Officer and Chief Financial Officer of the Company, hereby certifies, pursuant to 18 U.S.C.
Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

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 and
Principal Financial Officer
March 1, 2021

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.