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Amicus Therapeutics

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FY2017 Annual Report · Amicus Therapeutics
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A Rare Company: Patients are at the  
Heart of Everything We Do

A Perseverant Organization: We Encourage  
and Embrace Constant Innovation

Our  400+  employees  have  been  attracted  to  join  and 
stay  at  Amicus  because  of  our  programs  and  vision,  in 
addition  to  our  culture  and  mission.  During  this  time  of 
unprecedented  growth,  we  are  fully  committed  to  the 
investment  in  our  people,  and  we  have  never  been  in  a 
stronger  position  to  attract  and  develop  some  of  the 
most  passionate,  dedicated,  experienced  and  talented 
individuals  in  our  industry.  During  2017,  we  grew  our 
global organization by 23% with offices in 10 geographies. 
And our main corporate headquarters in Cranbury, NJ was 
named one of New Jersey’s 2018 Best Places to Work.

Throughout  our  company’s  history,  we  have  persevered 
through many setbacks and failures that are so common 
to our industry. We have ultimately succeeded in obtaining 
initial  regulatory  approvals  and  delivering  our  first 
innovative  product  to  patients.  Our  mission  is  to  repeat 
this success again (and again).

While  2017  was  a  great  year,  we  are  even  more  excited 
about  the  future  and  our  ability  to  make  a  profound 
impact on patients’ lives. With Galafold for Fabry disease 
and  ATB200/AT2221  for  Pompe  as  our  key  near-term 
value  drivers,  and  with  pipeline  expansion  opportunities 
within  the  rare  metabolic  diseases,  we  have  the  agility 
and  commitment  to  deliver  on  behalf  of  patients  and  to 
create significant value for shareholders, newer and better 
treatments,  and  some  day  soon,  cures.  Patients  deserve 
nothing less. 

Our  advantage  stems  from  our  commitment  to  patients 
as the voice that sparks and stewards our innovation. We 
were one of the first companies to incorporate a patient 
advisory  board  to  play  a  critical  role  in  advancing  our 
programs,  alongside  our  medical  and  scientific  advisory 
boards. We were also one of the first in industry to appoint 
a Chief Patient Advocate to ensure the voice of the patient 
is  represented  independently  at  the  C-suite  level  and 
reporting directly to me.

Today, collaborating with rare disease advocates, listening 
and  learning  from  patients  and  their  caregivers,  and 
gaining  insights  to  their  daily  lives  and  needs  –  is  what 
motivates all of us at Amicus. By championing and serving 
patient communities, we have created a sense of purpose 
that is rewarding, fulfilling, and inspirational.

Responsibility & Ethics: Our Passion  
for Making a Difference Unites Us

We believe that, in addition to our cutting-edge medicines, 
we can make the broadest possible global impact through 
the  strength  and  compassion  of  our  corporate  culture. 
As  we  look  to  develop  great  medicines  that  will  make  a 
difference  in  people’s  lives,  at  every  step  of  the  way  in 
our business journey we are applying the highest levels of 
business  ethics  and  social  responsibility  to  help  those  in 
our local, national, and global communities.

A Broader Responsibility:  
Healing Beyond Disease™

There are 7,000 rare diseases affecting an estimated 350 
million people globally. Many Amicus employees are living 
with  a  rare  disease,  or  caring  for  someone  living  with  a 
rare  disease.  This  “rare  is  common”  mindset  fuels  the 
Amicus mission and is integral to Healing Beyond Disease, 
our  unique  promise  to  further  serve  the  needs  of  the 
rare  disease  community  in  extraordinary  ways.  Our  core 
purpose  at  Amicus  is  to  make  great  medicines.  Healing 
Beyond  Disease  is  a  long-term  commitment  to  do  even 
more than that, and includes our philanthropic endeavors, 
our commitment to make our medicines fairly priced and 
broadly  accessible,  our  investment  in  next  generation 
treatments  within  our  current  therapeutic  areas,  and  our 
emerging  plans  to  make  our  medicines  accessible  to 
patients in every part of the world possible. 

JOHN F. CROWLEY

Chairman of the Board,  
Chief Executive Officer

As of December 31, 2017:

$2.39B 

MARKET CAPITALIZATION

$358.6M 

CASH

$36.9M 

NET PRODUCT SALES

GLOBAL
FOOTPRINT
IN 27 COUNTRIES

ROBUST
PIPELINE 

OF PRODUCTS FOR RARE 
METABOLIC DISEASES

FIRST ORAL 
PRECISION MEDICINE 
FOR FABRY DISEASE:

GALAFOLD

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We Believe

In the fi ght to remain at 
the forefront of therapies 
for rare and orphan diseases

We Believe

In our future to build long-term 
value for our stakeholders

We Believe

In each other to foster 
teamwork and respect for 
each individual’s contribution

 
 
 
 
 
 
 
E X P A N D E D   A C C E S S

Since the company’s earliest days, patients have been 

at the heart of everything we do at Amicus Therapeutics. 

Our mission is to transform the lives of those aff ected by 

rare  and  orphan  diseases  by  developing  fi rst-in-class  or 

best-in-class medicines that improve their health and well-

being.  With  the  development  of  medicines  that  will  be 

safe, eff ective and satisfy unmet medical need, comes the 

promise  that  these  medicines  will  be  broadly  accessible. 

Amicus is committed to carefully designed and considered 

paths to Expanded Access to our investigational drugs.

G L O B A L   F O O T P R I N T

400+ Employees Across the Globe Dedicated to Creating, Manufacturing, 
Testing, and Delivering Medicines for Rare Metabolic Diseases

INTERNATIONAL HQ
United Kingdom

GLOBAL HQ
Cranbury, NJ

Netherlands

Germany

Italy

China
(Manufacturing 
Operations)

Japan

Canada

Spain

France

ADDITIO NAL STAFF  PRESENCE IN:

Argentina

Australia

Austria 

Belgium 

Brazil 

Croatia

Czech Republic

Finland 

Greece 

Hungary

Ireland 

Israel 

Norway 

Portugal 

Sweden 

Switzerland 

Taiwan 

Turkey 

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A Uniquely 
Amicus Initiative

Strengthening Corporate 
Culture as We Grow:
To Impact as Many  People Living 
with  Rare Diseases  as Possible

Recognize and build upon the previous 
achievements and eff orts of all Amicus employees 

Drive, defi ne, and integrate patient centricity into 
the long-term fabric and culture of Amicus

Provide additional structure to allow all Amicus employees to go 
above and beyond in supporting the rare disease community

H E A L I N G   B E Y O N D   D I S E A S E   P I L L A R S

Healing Beyond Disease is inspired by and adaptive to rare disease 
communities and refl ects the existing generosity of our corporate culture. 

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UNITED STATES SECURITIES AND  EXCHANGE  COMMISSION
Washington, D.C. 20549
FORM 10-K

(cid:2) ANNUAL  REPORT  PURSUANT  TO  SECTION  13 OR 15(d)  OF THE

SECURITIES EXCHANGE  ACT  OF 1934 

For the fiscal year ended December 31, 2017
OR

(cid:3)

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

For the transition period from 

 to 
Commission File Number 001-33497

Amicus Therapeutics, Inc.

(Exact name of  registrant as  specified in  its charter)

Delaware
(State or other jurisdiction of
incorporation or organization)

71-0869350
(IRS Employer
Identification No.)

1 Cedar Brook Drive, Cranbury, NJ 08512
(Address of principal executive offices)
Telephone: (609) 662-2000
Securities registered pursuant to  Section  12(b)  of the Act:

Title of each class

Name of each exchange on which registered

Common Stock, par value $0.01 per share

The NASDAQ Stock Market LLC

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

Indicate by check mark if the registrant is a  well-known  seasoned issuer, as  defined in  Rule 405  of  the Securities

Act. Yes (cid:2) No (cid:3)

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 (cid:3) No (cid:2)

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 (cid:2) No (cid:3)
Indicate by check mark whether the registrant  has submitted  electronically and  posted  on its corporate  Web site,  if
any, every Interactive Data File required to be submitted and  posted  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
and post such files). Yes (cid:2) No (cid:3)

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405  of  Regulation  S-K  (§22.405) is  not

contained herein, and  will not be contained,  to  the  best  of the  registrant’s  knowledge,  in definitive  proxy  or information
statements  incorporated  by reference  in Part  III  of  this  Form 10-K  or  any  amendment  to  this  Form  10-K. (cid:3)

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 (cid:2)

Accelerated filer (cid:3)

Non-accelerated filer  (cid:3)
(Do  not check if  a
smaller reporting company)

Smaller Reporting Company (cid:3)
Emerging growth company (cid:3)

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. (cid:3)

Indicate by check mark if the registrant is a  shell company (as  defined in Rule  12b-2  of  the Act).  Yes (cid:3)  No (cid:2)
The aggregate market value of the 88,268,443  shares of  voting common  equity  held  by  non-affiliates  of the

registrant, computed by reference  to the  closing  price as  reported  on The NASDAQ  Global  Market, as  of  the last
business day of the registrant’s most  recently  completed  second  fiscal  quarter  (June  30,  2017)  was  approximately
$888,863,221. Shares of voting and non-voting  stock  held  by  executive officers,  directors  and holders  of  more  than  10%
of the outstanding stock have  been excluded  from  this  calculation because  such persons  or  institutions  may  be  deemed
affiliates. This determination of affiliate status  is not a conclusive  determination for other purposes.

As of February 23, 2018, there were 186,891,419 shares of common stock outstanding.
DOCUMENTS INCORPORATED BY REFERENCE:  Portions of  the Proxy  Statement  for  the  registrant’s  2018
Annual Meeting of Stockholders which  is  to  be  filed  subsequent to the date  hereof  are  incorporated by reference  into
Part III of this Annual Report on Form 10-K.

PART I

Item 1.
BUSINESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 1A. RISK FACTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 1B. UNRESOLVED STAFF  COMMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PROPERTIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 2.
LEGAL PROCEEDINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 3.
MINE SAFETY DISCLOSURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 4.

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PART II

Item 5.

Item 6.
Item 7.

MARKET FOR THE REGISTRANT’S COMMON EQUITY, RELATED
STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY
SECURITIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SELECTED FINANCIAL  DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MANAGEMENT’S DISCUSSION AND ANALYSIS  OF FINANCIAL
CONDITION AND RESULTS OF OPERATIONS . . . . . . . . . . . . . . . . . . . . . . . . .
Item 7A. QUANTITATIVE AND  QUALITATIVE DISCLOSURES  ABOUT MARKET RISK
FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA . . . . . . . . . . . . . . .
Item 8.
CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON
Item 9.
ACCOUNTING AND FINANCIAL DISCLOSURE . . . . . . . . . . . . . . . . . . . . . . . .
CONTROLS AND PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 9A.
Item 9B. OTHER INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PART III

Item 10.
Item 11.
Item 12.

Item 13.

Item 14.

DIRECTORS, EXECUTIVE  OFFICERS AND CORPORATE GOVERNANCE . . .
EXECUTIVE COMPENSATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND
MANAGEMENT AND RELATED STOCKHOLDER MATTERS . . . . . . . . . . . . .
CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND
DIRECTOR INDEPENDENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PRINCIPAL ACCOUNTING  FEES  AND SERVICES . . . . . . . . . . . . . . . . . . . . . .

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143

143

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Item 15.
EXHIBITS, FINANCIAL  STATEMENT  SCHEDULES . . . . . . . . . . . . . . . . . . . . . .
SIGNATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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PART IV

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This annual report on Form 10-K contains forward-looking  statements that  involve  substantial risks

and uncertainties. All statements, other  than  statements of historical facts, included in  this annual
report on Form 10-K regarding our strategy, future operations,  future financial  position, future
revenues, projected costs, prospects,  plans and objectives of management  are forward-looking
statements. The words ‘‘anticipate,’’ ‘‘believe,’’ ‘‘estimate,’’  ‘‘expect,’’ ‘‘potential,’’  ‘‘intend,’’ ‘‘may,’’
‘‘plan,’’ ‘‘predict,’’ ‘‘project,’’ ‘‘will,’’ ‘‘should,’’ ‘‘would’’ and similar  expressions  are intended  to  identify
forward-looking statements, although not  all  forward- looking  statements contain these identifying
words.

The forward-looking statements in this annual report  on Form 10-K include, among other things,

statements about:

(cid:129) the progress and results of our clinical trials  of our drug candidates;

(cid:129) the cost of manufacturing drug supply for our  clinical and  preclinical  studies, including the

significant cost of new Fabry enzyme replacement therapy (‘‘ERT’’) cell line development and
manufacturing as well as the cost of manufacturing  Pompe ERT;

(cid:129) the scope, progress, results and costs of preclinical development, laboratory testing  and clinical
trials for our product candidates including  those testing the use of pharmacological  chaperones
co-formulated and co-administered with ERT and for the treatment of lysosomal storage
disorders;

(cid:129) the future results of on-going preclinical research and subsequent clinical  trials for  cyclin-

dependent kinase-like 5 (‘‘CDKL5’’),  including our ability to  obtain regulatory approvals  and
commercialize CDKL5 and obtain market acceptance for CDKL5;

(cid:129) the costs, timing and outcome of regulatory  review of our product  candidates;

(cid:129) the number and development requirements of  other  product candidates that we pursue;

(cid:129) the costs of commercialization activities,  including product marketing, sales and  distribution;

(cid:129) the emergence of competing technologies and other  adverse  market  developments;

(cid:129) our ability to obtain reimbursement for migalastat HCl;

(cid:129) our ability to obtain market acceptance of migalastat HCl in the European Union;

(cid:129) the costs of preparing, filing and prosecuting patent applications and  maintaining, enforcing and

defending intellectual property-related claims;

(cid:129) the extent to which we acquire or  invest in  businesses, products and  technologies;

(cid:129) our ability to successfully integrate  our acquired products  and technologies into our business,

including the possibility that the expected  benefits of  the transactions will not be fully realized by
us or may take longer to realize than expected; and

(cid:129) our ability to establish collaborations and obtain milestone,  royalty or other payments from any

such collaborators.

We  may not actually achieve the plans, intentions or  expectations  disclosed in  our  forward-looking
statements, and you should not place undue reliance on our  forward-looking statements.  Actual results
or events could differ materially from  the plans, intentions and expectations disclosed in the forward-
looking statements we make. We have  included important factors in the cautionary statements included
in this annual report on Form 10-K,  particularly in Part I, Item 1A ‘‘Risk  Factors’’ that we believe
could cause actual results or events to  differ materially  from the forward-looking statements that we

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make. Our forward-looking statements  do not reflect the potential impact of  any future acquisitions,
mergers,  dispositions, joint ventures,  collaborations  or investments we may make.

You should read this annual report on  Form 10-K and the  documents that we  incorporate by
reference in this annual report on Form 10-K completely  and with the understanding that our  actual
future results may be materially different from  what we expect. We do not assume any obligation to
update any forward-looking statements.

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Item 1. BUSINESS.

Overview

PART I

We  are a global patient-centric biotechnology company engaged in the  discovery, development and

commercialization of a diverse set of novel high-quality treatments  for patients living  with rare
metabolic diseases. The cornerstone of the  Amicus  portfolio is migalastat  HCl,  an oral precision
medicine for people living with Fabry disease  who have  amenable genetic mutations. Migalastat  is
currently approved under the trade name  GALAFOLD in the  European  Union, with  additional
approvals granted and pending in several geographies.  For Fabry patients with non-amenable genetic
mutations, a novel proprietary enzyme  replacement  therapy (‘‘ERT’’) co-formulated with migalastat
HCl is currently in late preclinical development.

The future value driver of the Amicus pipeline is ATB200/AT2221, a  novel, late-stage,  potential

best-in-class treatment paradigm for  Pompe disease. ATB200/AT2221 leverages our Chaperone-
Advanced Replacement Therapy (‘‘CHART(cid:4)’’) platform technology to develop novel ERT products for
Pompe disease, Fabry disease, and potentially other lysosomal storage  disorders (‘‘LSDs’’). We are also
investigating preclinical and discovery  programs in other rare diseases  including cyclin-dependent
kinase-like 5 (‘‘CDKL5’’) deficiency.  We  believe that  our platform  technologies and our  product
pipeline uniquely position us and drive our commitment to advancing  and expanding a  robust pipeline
of cutting-edge, first- or best-in-class medicines for rare metabolic diseases.

We  were previously developing SD-101 in a Phase 3  study as  a  potential first-to-market  therapy for

the chronic, rare connective tissue disorder Epidermolysis  Bullosa (‘‘EB’’). On  September 13,  2017, we
reported that top-line data from a randomized, double-blind, placebo-controlled  Phase 3  clinical study
(‘‘ESSENCE’’ or ‘‘SD-005’’) to assess the efficacy  and safety of the novel  topical wound-healing  agent
SD-101 did not meet the primary endpoints or secondary  endpoints in participants with EB. We plan to
further analyze and share the Phase 3  ESSENCE  results with key stakeholders in the EB  community
including physicians, patient organizations  and  regulators. In the interim, in consultation with their
physicians, participants in the ongoing  extension studies (SD-004 and -006) will have  the opportunity to
continue being treated with SD-101.  Based on the top-line data, we  have no  current plans to invest in
any additional clinical studies or commercial preparation  activities for SD-101.

Our Strategy

Our strategy is to create, manufacture,  test and deliver the highest quality medicines for people
living with rare metabolic diseases through internal and in-licensed products and  product candidates
that have the potential to obsolete current  treatments, provide significant benefits  to  patients, and  be
first- or best-in-class. In addition to our  lead programs  in Fabry and  Pompe, we intend to leverage our
global  capabilities to develop and expand  our robust pipeline, with  the goal of entering the clinic with
one or more programs in 2019. Since the  beginning of our last fiscal year, we  made significant progress
toward fulfilling our vision to build a  leading global biotechnology company focused on rare metabolic
diseases.  Highlights of our progress in 2017  include:

(cid:129) Commercial success. Exceeded ‘‘Target 300’’ goal with more than 310 people treated  with

reimbursed GALAFOLD (migalastat) oral precision medicine for  Fabry  disease  at year-end
2017. Full-year 2017 GALAFOLD revenue totaled  approximately  $36.9 million  from non-US
countries only. There was no revenue from the US.

(cid:129) Regulatory progress. Completed global regulatory submissions  for migalastat  in Japan (J-NDA),

the U.S.  (NDA), and other key geographies.

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(cid:129) Pompe clinical study. Established important clinical proof-of-concept for novel, highly

differentiated Pompe treatment regimen ATB200/AT2221 on safety,  functional outcomes and key
disease biomarkers.

(cid:129) Manufacturing. Successfully scaled manufacture of Pompe biologic engineering batches at

commercial scale (1,000L) with capacity plans to ensure that  entire  Pompe population  can be
served as quickly as possible.

(cid:129) Financial strength. Strengthened balance sheet with total cash, cash  equivalents  and marketable
securities of $358.6 million at December  31, 2017. The current  cash position, including proceeds
from the recent equity offering and expected Galafold revenues,  is sufficient to fund ongoing
Fabry and Pompe program operations into at least 2021. Potential future business  development
collaborations, pipeline expansion, and  investment  in biologics manufacturing  capabilities  could
impact our future capital requirements.

(cid:129) Patient-centricity. We continued to focus on improving the  lives of patients living  with rare and
devastating diseases, which has always  been a critical component of the values of our corporate
culture. The needs of patients in the rare disease community are at the center of our innovative
science, our commercial organization,  and our clinical programs.

Our Product Candidates

We  are committed to continued innovation for all people living with Fabry disease. Our Fabry

franchise strategy is to develop migalastat  HCl  (which we  may refer to as  ‘‘migalastat’’)  as a
monotherapy for patients with amenable mutations, and to  advance next-generation therapies such  as
our  proprietary Fabry-ERT co-formulated with migalastat  for  all other patients.

We  previously completed two global Phase 3  registration studies of our  migalastat  HCl,  an orally
administered small molecule pharmacological chaperone  for the  treatment of Fabry disease, an LSD.
Migalastat is currently approved under the trade  name GALAFOLD in the  European Union, with
additional approvals granted and pending  in several  geographies  for long-term  treatment of adults and
adolescents aged 16 years and older with a  confirmed diagnosis  of Fabry disease and  who have an
amenable mutation. The label includes  331 Fabry-causing mutations, which represent between  35% and
50% of patients currently diagnosed  with Fabry  disease.  We commenced initial commercial shipments  in
the EU in the second quarter of 2016  and  recognized net  product sales of $36.9 million in  2017. For
patients with non-amenable mutations, we are leveraging our CHART(cid:4) technology and advanced
biologics capabilities to move forward with a  proprietary  Fabry ERT for co-formulation with migalastat
HCl. Master cell banking has been completed and process  development work  has commenced.

We  have also initiated a clinical study in patients with Pompe disease,  another LSD, to investigate
our  novel treatment paradigm that consists of ATB200,  a uniquely engineered recombinant human acid
alpha-glucosidase (‘‘rhGAA’’) enzyme with an optimized carbohydrate structure  to  enhance uptake,
co-administered with a pharmacological chaperone,  AT2221, to improve  activity and stability.
Leveraging our biologics capabilities  and  platform  technologies, we are also investigating preclinical and
discovery  programs in other rare diseases  including cyclin-dependent kinase-like  5 (‘‘CDKL5’’)
deficiency. We believe that our platform  technologies and our advanced  product pipeline uniquely
position us at the forefront of developing  therapies to potentially address significant  unmet needs for
rare metabolic diseases.

On a regular basis we consider potential collaborations,  alliances, licensing and  other  business
development opportunities to enhance  our strategic plan to develop  and provide therapies to patients
living with rare metabolic diseases and support our continued expansion as a  commercial biotechnology
company.

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Our Technology Platforms

Pharmacological Chaperone Technology

We  are leveraging our pharmacological  chaperone  technology to develop next-generation
treatments for human genetic diseases  by targeting mutated proteins that are unstable, unfolded, or
misfolded. In the human body, proteins are involved  in almost every  aspect  of  cellular  function.
Proteins are linear strings of amino acids that fold  and twist into specific three-dimensional shapes in
order to function properly.

Certain human diseases result from mutations  that cause  changes in  the amino acid sequence of a
protein, and these changes often reduce protein  stability and  may prevent  them from  folding properly.

Pharmacological chaperones are small  molecules designed to selectively bind to a  target protein,

increase its stability, and help keep it  folded in  the correct three-dimensional shape.  For LSDs,
pharmacological chaperones are designed  to bind to, stabilize, and  facilitate trafficking of  both
endogenous and exogenous enzymes to the  lysosome. This important feature has allowed us to develop
our  personalized medicine migalastat  (a  monotherapy) in addition to our  Chaperone-Advanced
Replacement Therapy (‘‘CHART(cid:4)’’) platform of pharmacological chaperones  in combination with  ERT.

Pharmacological Chaperone Monotherapy

Many natural proteins are made in the endoplasmic  reticulum  (‘‘ER’’) and sent  to  other parts  of

the cell. Unstable, unfolded, or misfolded proteins are generally  eliminated or  retained in  the ER
rather than being transported to the intended destination in the cell. The accumulation of unfolded  or
misfolded proteins in the ER and the  interruption of trafficking of important proteins  to  their proper
cellular  locations can cause several types of problems including:

(cid:129) Complete or partial loss of appropriate  protein function;

(cid:129) Accumulation of lipids and other substances that should be degraded; and

(cid:129) Disruption of cellular function and eventual cell death.

These defects may lead to various types of human genetic diseases, including LSDs. As
monotherapy agents for LSDs, pharmacological chaperones are designed to  bind  to  and stabilize
endogenous lysosomal enzymes for proper  trafficking to the  lysosome, which may  also alleviate the
buildup of mutant proteins in the ER.  Once in the lysosome,  the pharmacological  chaperone
disassociates and the enzyme is free to break down  substrate.  Based  on  this mechanism,  individuals
with certain genetic mutations (amenable  mutations)  that  result in  some residual biological activity are
potentially eligible for pharmacological chaperone monotherapy.

CHART(cid:4) Technology Platform

ERT is the standard of care for several LSDs, based on  the intravenous infusion of recombinant or
gene-activated human enzyme. The enzyme  is delivered into the blood in order to be taken  up by cells
and  then transported to the lysosome.  Upon  entering  the lysosome,  this  enzyme is intended  to  perform
the function of the absent or deficient endogenous enzyme. However, the pH in  the infusion bag and in
blood is higher than the enzyme’s natural acidic environment in  the lysosome. As a result,  the infused
enzyme may unfold and lose activity and may be misdirected  to  non-target  tissues or rapidly cleared
from the body. Exposure to high concentrations  of infused enzymes can  impact  efficacy  or cause
adverse effects.

Possible problems related to the instability of infused enzyme include:

(cid:129) Denaturation and reduced activity;

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(cid:129) Poor targeting and uptake into key tissues  of disease; and

(cid:129) Poor tolerability and increased immunogenicity.
In our CHART(cid:4) programs, each chaperone is designed to bind to and stabilize a  specific
therapeutic enzyme. Clinical studies of pharmacological chaperones  in combination with currently
marketed ERTs have established initial human proof of  concept that  a  chaperone  can stabilize enzyme
activity and potentially improve ERT  tolerability. We  believe this technology  may be able  to  improve
the stability, uptake, and activity of the  enzyme, and  may improve tolerability and lower
immunogenicity compared to administration of currently marketed ERTs alone. This combination
approach may benefit patients with LSDs,  including patients  with inactive endogenous proteins who are
not amenable to chaperone monotherapy.

Enzyme Targeting Technology

The uptake of ERTs into a patient’s  cells is  mediated  by a  particular carbohydrate called  mannose

6-phosphate (‘‘M6P’’). M6P enables  binding and delivery of therapeutic drug  to  lysosomes via M6P
receptors on cell surfaces. Many currently  approved ERTs have limited amounts of  M6P,  thereby
limiting the uptake of therapeutic drug into a  patient’s cells.

We  are developing novel ERTs, including ERTs with  significantly higher amounts of  M6P  for
improved lysosomal targeting compared to existing ERTs. We believe that this  technology to enhance
drug targeting, together with our CHART(cid:4) platform to improve enzyme stability, may  be  utilized to
develop a pipeline of more effective next-generation ERTs for LSDs.

Migalastat for Fabry Disease

Overview

Migalastat was approved for use in the EU  in May 2016 under the brand name GALAFOLD as a

first-line therapy for long-term treatment of  adults and adolescents aged 16 years and older with  a
confirmed diagnosis of Fabry disease and who have an amenable mutation. The approved  label includes
331 Fabry-causing mutations, which represent  up to half of all patients with Fabry disease. Approvals
have also been granted in Israel, Canada,  Australia, South  Korea, and Switzerland, with  additional
approvals pending in other geographies. In 2017,  we submitted  applications for  regulatory approval  in
Japan and the U.S. We expect final decisions on  approval from Japanese  and U.S. regulators in  2018.

We  have launched GALAFOLD in several European countries, including countries such as France,

Germany, Italy, Switzerland and the  UK,  on  a commercial basis, as well as in select  other  countries
through reimbursed EAPs. We have been granted pricing and reimbursement in  17 countries. We
expect to continue to launch GALAFOLD  in additional countries during 2018.

Key regulatory submissions in 2017 included  our  new drug  applications (‘‘NDAs’’)  in Japan and the
United States. We submitted an NDA  to  the FDA for migalastat  for Fabry disease in the fourth quarter
of 2017, following a series of discussions with and  written communication received from  the FDA  which
informed us that we may submit an NDA  for migalastat. The NDA  was based on existing data. An
additional Phase 3 study previously requested  by the  FDA to  assess GI  symptoms was no longer
required before an NDA submission.  The FDA has accepted the NDA for filing under priority  review,
and the Prescription Drug User Fee  Act  goal  date for the FDA decision  is August  13, 2018.

As an orally administered monotherapy,  migalastat is designed to bind to  and stabilize an
endogenous alpha-galactosidase A (‘‘alpha-Gal A’’)  enzyme in those  patients with genetic mutations
identified as amenable in a GLP cell-based amenability assay. Migalastat is  an oral precision  medicine
intended to treat Fabry disease in patients who have amenable  genetic mutations, and at this  time, it is
not intended for concomitant use with ERT. For patients with  non-amenable mutations we are

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developing the use of migalastat in combination  with a  novel Fabry ERT  for patients who  have
non-amenable genetic mutations.

Patients with Fabry disease have an inherited  deficiency of the  alpha-Gal A enzyme that would
normally degrade the lipid substrate globotriaosylceramide in  the lysosome. Genetic mutations  that
cause  changes in the amino acid sequence  of  alpha-Gal A result in an unstable  enzyme  that  does not
efficiently fold into its correct three-dimensional shape and cannot  be  trafficked properly  in the cell,
even if it has the potential for biological activity.  Migalastat is an oral small molecule pharmacological
chaperone that is designed to bind to  and  stabilize a  patient’s own endogenous target protein. This  is
considered a precision medicine because  migalastat targets only patients with amenable mutations.

We  have completed two Phase 3 global registration  studies of migalastat monotherapy. We  have

reported Phase 3 data in both treatment-na¨ıve patients (‘‘Study 011’’) and ERT-switch patients
(‘‘Study 012’’). Results from these studies have shown that treatment  with migalastat results in
reductions in disease substrate, stability of  kidney  function,  reductions in cardiac mass, and
improvement in gastrointestinal symptoms  in patients  with  amenable mutations in a validated GLP
amenability assay.

Next-Generation Therapies for Fabry Disease

We  are committed to continued innovation for all  people living with Fabry disease. For people

living with Fabry disease who have non-amenable mutations,  which are not suitable for migalastat as
monotherapy, our strategy is to advance next-generation  therapies such  as our proprietary  Fabry-ERT
co-formulated with migalastat or other innovative  technologies that we continue to evaluate.

We  are leveraging our CHART(cid:4) technology and advanced biologics capabilities to move forward

with a proprietary Fabry ERT for co-formulation  with  migalastat. Master cell  banking  has been
completed, process development work  has commenced, and initial preclinical studies  have been
completed to advance this novel co-formulation  toward the clinic in 2019.

Clinical Manifestations of Fabry Disease

Fabry disease is an X-linked disease caused by mutations in the GLA gene,  which encodes the

alpha-Gal A enzyme. These mutations can cause alpha-Gal A to be either absent or deficient. When
alpha-Gal A is absent or deficient the substrates,  GL-3 and lyso-Gb3 accumulate, leading to damage of
cells within affected parts of the individual’s  body and causing the  various pathologies seen in Fabry
disease.

Fabry disease leads to progressive, irreversible organ damage, typically involving  the nervous,
cardiac, and renal systems, as well as multiple other tissues. The symptoms can be severe, differ from
patient to patient, and begin at an early age, resulting  in significant clinical,  humanistic, and  healthcare
costs. Fabry disease requires lifelong medical intervention to manage the complications  of this
devastating disease across multiple organ  systems.

People with Fabry disease are generally categorized in a spectrum of disease severity  from a

classic-onset form to a more attenuated,  late-onset onset form of the disease. Heterozygous females  can
experience a variable presentation, ranging from asymptomatic or  mild symptoms,  to  symptoms that are
just  as severe as those experienced by  male patients. All  Fabry disease is progressive and leads to organ
damage  regardless of the time of symptom onset.

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People with Fabry disease may experience severe symptoms, or seemingly  none  at all, with a
variety of clinical presentations in between.  But even when  disease  presentation is  asymptomatic or
mild, disease  substrate can accumulate, contributing to long-term damage of organs and tissues.

Organ damage in Fabry disease is caused by  the accumulation of GL-3 and lyso-Gb3, leading to

dysfunction in affected cells. These deposits  can potentially affect multiple cell types, including:

21FEB201812092378

(cid:129) Endothelial cells: vascular and neurovascular

(cid:129) Cardiomyocytes

(cid:129) Smooth muscle cells

(cid:129) Neurons within the central and peripheral nervous  systems

(cid:129) Eccrine sweat glands

(cid:129) Epithelial cells: cornea, lens, airway

(cid:129) Perithelial cells: small intestine, colon, and rectum

(cid:129) Ganglion cells

Individuals with Fabry disease may experience a  shorter  lifespan compared with the  general
population. Lifespans for people with  Fabry disease may be shortened to approximately 50  years  for
men and 70 for women — 20-, and 10-year reductions, respectively. Cardiovascular disease is the  most
common cause of death for both men  and women.

With more than 800 known mutations of  the GLA gene, there is no single  genotypic  cause of
Fabry disease. A variety of mutation  types can give  rise to Fabry  disease, such as missense  mutations,
splicing mutations, small deletions and  insertions, and large deletions.  Many  genetic mutations are
specific  to individual families affected  by Fabry disease,  whereas some are  more widespread.

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Fabry Disease Prevalence and Market Opportunity

Fabry disease is a relatively rare disorder.  The annual incidence of Fabry disease  in newborn  males
has been estimated to be 1:40,000-1:60,000  (Journal of  the American Medical Association  January 1999
and The Metabolic and Molecular Bases of  Inherited Disease  8th edition 2001). The  current estimates
of approximately 12,200 diagnosed patients worldwide, excluding  India and China  are generally based
on a small number of studies in single ethnic  populations in  which people  were screened for  classic
Fabry disease (data on file).

Recent newborn screening studies in Italy, Taiwan, and Austria,  which screened more  than 263,000
newborns, found the incidence of Fabry disease  mutations to be between 1:2,400 to 1:3,859, more than
ten times higher than previous estimates  for classic patients. (American Journal of  Human Genetics
2006, Human Mutation 2009, and the  Lancet 2011).  This high  incidence was attributed to a large
number of newborn males with alpha-Gal  A  mutations often associated with late-onset symptoms of
Fabry disease, which may not have been  identified in  previous screening  studies that relied  on diagnosis
based on development of symptoms of  classic  Fabry disease.

We  also believe that many types of genetic mutations may result in misfolded alpha-Gal A and

therefore may also respond to treatment  with monotherapy  migalastat.  Based on this,  we believe  that
approximately 35-50% of the Fabry disease  patient population may benefit from treatment with
migalastat as a monotherapy. However, the  entire Fabry disease patient population has the  potential  to
benefit from migalastat in combination with ERT.

We  expect that as  awareness of late-onset symptoms of Fabry disease grows, the number of

patients diagnosed with the disease will  increase. Increased awareness of Fabry  disease,  particularly for
specialists not accustomed to treating Fabry  disease patients, may lead to increased testing  and
diagnosis of patients with the disease.

Existing Products for the Treatment of  Fabry Disease

Currently, two other products, both ERTs,  are approved for  the treatment  of  Fabry  disease:

agalsidase beta and agalsidase alfa. Agalsidase  beta is approved globally (conditionally  in the U.S.)  and
commercialized by Sanofi Aventis through Genzyme Corporation,  while agalsidase alfa is
commercialized by Shire and approved  in  the EU  and  other countries but  not  in the U.S. Orphan drug
exclusivity for both agalsidase beta and agalsidase alfa has expired  in the EU and for agalsidase beta in
the U.S.  as well. The net product sales  of agalsidase  beta and agalsidase alfa for 2017 were
approximately $816.0 million as publicly  reported by Sanofi  Aventis, and $472.0  million  as publicly
reported by Shire, respectively.

Novel ERT for Pompe Disease
We  are leveraging our biologics capabilities and CHART(cid:4) platform to develop a novel treatment

paradigm for Pompe disease. This ERT  consists of a uniquely engineered rhGAA enzyme, ATB200,
with an optimized carbohydrate structure to enhance  uptake, administered in  combination with a
pharmacological chaperone AT2221 to  improve activity and stability.  We acquired ATB200  as well as
our  enzyme targeting technology through  our purchase  of Callidus  Biopharma. ATB200  is our first
biologic to enter clinical development.

The pharmacological chaperone, AT2221 is not an  active ingredient  that contributes  directly  to
GAA  substrate reduction but instead acts  to stabilize ATB200. The small  molecule pharmacological
chaperone AT2221 binds and stabilizes ATB200 to improve  the uptake of active enzyme in key disease-
relevant tissues, resulting in increased clearance of accumulated substrate, glycogen.

In preclinical studies, ATB200/AT2221  demonstrated greater tissue enzyme levels and  further
substrate reduction compared to the currently approved  ERT for Pompe disease  (alglucosidase  alfa).

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Throughout 2017 we have reported a  cascade of data from a Phase  1/2 clinical  study, ATB200-02,

to investigate our novel Pompe treatment paradigm  in Pompe  patients. The primary objective  is to
evaluate  the safety, tolerability, pharmacokinetics (‘‘PK’’),  and pharmacodynamics (‘‘PD’’) of
ATB200/AT2221 for an 18-week primary treatment  period followed by a long-term  extension. The three
patient cohorts, enrolling 20 total patients across all cohorts,  are ambulatory ERT-switch patients
(Cohort 1), non-ambulatory ERT-switch patients (Cohort  2),  and  ERT-na¨ıve patients (Cohort 3).

As of our interim analysis reported in October 2017, patients  who completed six months  of
treatment with ATB200/AT2221 showed  improvements in  the 6MWT distance and  other  measures of
motor function, stability or increases in  FVC, and further  reductions in  biomarkers of muscle damage
and disease substrate, with consistent  results reported in  initial patients  who completed  nine months of
treatment.

On February 8, 2018 we reported additional data from  our  clinical study ATB200-02 at the
14th Annual WorldSymposium. Highlights  included safety and tolerability data in all 20 patients
(maximum of 20+ months of treatment) as well  as PD  data  (muscle damage biomarker  and disease
substrate biomarker) for all 20 patients (15 ERT-switch  patients and  5 ERT-na¨ıve patients). To date,
adverse events have been generally mild  and transient. ATB200/AT2221  has resulted in a low  rate of
infusion-associated reactions (IARs) following 550+ infusions (three  events of IARs in  two patients;
<1% of all 550+ infusions with an IAR). The clinical pharmacokinetic  profile has  been consistent  with
previously reported preclinical data. Treatment with ATB200/AT2221 resulted in  persistent and durable
reductions in creatine kinase, or CK, and  urine hexose tetrasaccharide,  or Hex4, across all patient
cohorts out to month 12.

As of the last interim analysis in February 2018, data  on functional outcomes are available for
19 of  the 20 patients enrolled (one patient dropped out of the extension study due to travel burden  and
family considerations). Muscle function improved  in 16 of 19  patients at  month 9.  Muscle function
improved in 10 out of 10 patients with  available data at month 12. Mean  six-minute walk  test (6MWT)
improved in both ERT-na¨ıve and ERT-switch patients with continued benefit observed  out to month 12.
All 5 ERT-na¨ıve patients showed increases in 6MWT distance  at all time points out to month 12. The
ERT-na¨ıve patients showed mean increases of  41.8  meters at  month 6 (n=5),  63.5 meters at month 9
(n=5),  and 86.8 meters at month 12 (n=2). Of the  10 ERT-switch  patients, 8 patients showed increases
in 6MWT distance and two patients showed  decreases at month 9. All eight  of the ERT-switch patients
with available data at month 12 showed increases in  6MWT distance. The ERT-switch patients showed
mean increases of 23.9 meters at month  6 (n=10), 24.5 meters at  month 9  (n=10), and  57.4 meters at
month 12 (n=8). Other motor function tests generally showed mean improvements consistent  with
6MWT distance. Three of the four non-ambulatory ERT-switch patients  showed improvements  in upper
extremity strength (which includes elbow and shoulder) from baseline to month 9, as  measured by
quantitative muscle testing (QMT) and manual muscle testing  (MMT).  Pulmonary function  improved in
ERT-na¨ıve patients and was generally stable in ERT-switch patients. In ERT-na¨ıve patients, mean
absolute change in forced vital capacity (FVC)  was  +4.2% at month  6 (n=5), +6.2% at month 9
(n=5), and +6.0% at month 12 (n=2).  In ERT-switch patients  mean  absolute change in FVC  was
(cid:5)1.3% at month 6 (n=9), (cid:5)1.7% at month 9 (n=9), and  (cid:5)3.1% at month  12 (n=7). Overall, other
pulmonary tests of maximal inspiratory  pressure (MIP), a  measure of inhalation, and maximal
expiratory pressure (MEP), a measure of exhalation, were stable or increased  in both ERT-na¨ıve and
ERT-switch patients.

Pompe Disease Background

Like Fabry disease, Pompe disease is an LSD that results  from a deficiency in an enzyme, GAA.
Signs and symptoms of Pompe disease  can  be  severe and debilitating and include progressive muscle
weakness throughout the body, particularly the heart and skeletal muscles. This leads to accumulation
of glycogen in cells, which is believed  to  result in the  clinical manifestations of Pompe disease. Pompe

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disease ranges from a rapidly fatal infantile  form with severe cardiac involvement to a  more slowly
progressive, late-onset form primarily affecting  skeletal muscle. All  forms are characterized by severe
muscle weakness that worsens over time. In  the early-onset form, patients are  usually diagnosed  shortly
after birth and often experience enlargement  of the heart and  severe muscle weakness. In late-onset
Pompe disease, symptoms may not appear  until late childhood or adulthood and  patients often
experience progressive muscle weakness.

According to reported estimates of the Acid Maltase Deficiency  Association, the United Pompe

Foundation, and the Lysosomal Disease  Program at  Massachusetts  General Hospital, there are
5,000-10,000 patients with Pompe disease worldwide.

CDKL5

We  are researching a potential first-in-class protein  replacement  therapy approach for  CDKL5

deficiency in preclinical studies. CDKL5 (cyclin-dependent kinase-like  5) is a gene  on the
X-chromosome encoding the CDKL5  protein that regulates the  expression  of  several essential proteins
for normal brain development. Genetic mutations in  the CDKL5 gene  result in CDKL5  protein
deficiency and the disorder manifests  clinically as  persistent seizures starting in  infancy, followed by
severe impairment in neurological development. Most  children affected by CDKL5  deficiency cannot
walk or care for themselves and may  also  suffer from  scoliosis, visual impairment,  sensory issues, and
gastrointestinal complications.

Acquisitions

MiaMed, Inc.

In July 2016, we acquired MiaMed, Inc.,  (‘‘MiaMed’’), which is a pre-clinical biotechnology
company focused on developing protein  replacement  therapy for CDKL5 and related diseases. Upon
closing of the transaction we paid the  former holders of  MiaMed’s capital stock an  aggregate of
$6.5 million, comprised of (i) approximately $1.8  million  in cash  (plus MiaMed’s cash and  cash
equivalents at closing and less any of  MiaMed’s unpaid third-party  fees  and expenses related  to  the
transaction), and (ii) 825,603 shares of our Company’s common stock. In addition, we also agreed to
pay up to an additional $83.0 million  in connection with the achievement of certain clinical, regulatory
and commercial milestones, for a potential  aggregate deal value of $89.5  million. We accounted  for this
transaction as an acquisition of an asset  as we  did not acquire any employees from MiaMed nor  did we
acquire any significant processes that  we  did not previously  perform or manage.

Callidus Biopharma, Inc.

In November 2013, we entered into a  merger agreement with Callidus, a privately held

biotechnology company that was engaged in developing a next-generation Pompe ERT. Callidus did  not
have complementary technologies but their  technology was complementary to our own pharmacological
chaperone technology.

In connection with our acquisition of  Callidus,  we agreed to issue an aggregate of 7.2  million
shares of our common stock to the former  stockholders  of Callidus. In  addition, we will be obligated to
make additional payments to the former  stockholders of Callidus upon the achievement of certain
clinical milestones of up to $35 million and  regulatory  milestones of up to  $105 million set forth in the
merger agreement, provided that the aggregate merger consideration shall not exceed $130 million. We
may, at our election, satisfy certain milestone payments identified in the  merger agreement aggregating
$40 million in shares of our common stock.  The  milestone payments not  permitted to be satisfied in
common stock (as well as any payments  that we are  permitted  to,  but chooses not to, satisfy in
common stock), as a result of the terms of the merger  agreement, will be  paid in cash.

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During  the second quarter of 2016, we reached the  first clinical milestone, which was  the dosing of

the first patient in a Phase 1 or 2 study. The milestone payment for this event was $6.0 million, which
was paid in common stock of the Company,  during the second quarter  of  2016.

Strategic Alliances and Arrangements

In November 2013, we entered into a  Revised Agreement  (‘‘the  Revised Agreement’’)  with

GlaxoSmithKline (‘‘GSK’’), pursuant  to which, we  obtained global rights to develop and  commercialize
migalastat as a monotherapy and in combination with ERT  for Fabry disease. The Revised Agreement
amends and replaces in its entirety the earlier agreement  entered into between us and GSK in July
2012. Under the terms of the Revised  Agreement, for migalastat monotherapy, GSK is eligible  to
receive post-approval and sales-based  milestones, as  well as tiered royalties  in the mid-teens in eight
major markets outside the U.S. There was  no other consideration  paid  to GSK as part of the Revised
Agreement. For the year ended December 31, 2017,  we recognized approximately $3.9  million of
royalty expense under the Revised Agreement.

We  will continue to evaluate other business development opportunities  as appropriate that build

stockholder value and provide us with  access  to  the financial, technical, clinical, and  commercial
resources necessary to develop and market  pharmacological chaperone therapeutics,  ERTs,  skin
treatments, and other technologies or  products. We are exploring  potential collaborations, alliances, and
other business development opportunities  on a  regular basis. These opportunities may include the
acquisition of preclinical-stage, clinical-stage, or marketed  products so  long as such transactions  are
consistent with our strategic plan to  develop and  provide therapies to patients living with rare and
orphan diseases, and support our continued transformation from a development-stage company into a
commercial biotechnology company.

Intellectual Property

Patents and Trade Secrets

Our success depends in part on our ability  to  maintain  proprietary protection surrounding our
product  candidates, technology, and know-how, to operate without infringing  the proprietary  rights of
others, and to prevent others from infringing  our  proprietary rights.  Our policy  is to seek to protect  our
proprietary position by filing U.S. and foreign patent applications related to our  proprietary technology,
including both new inventions and improvements of existing  technology, that are  important to the
development of our business, unless  this proprietary position would be better protected  using  trade
secrets. Our patent strategy includes  obtaining patent protection, where possible, on compositions  of
matter, methods of manufacture, methods of use,  combination therapies, dosing and administration
regimens, formulations, therapeutic monitoring, screening methods, and assays. We also rely on trade
secrets, know-how, continuing technological innovation,  in-licensing,  and partnership opportunities to
develop and maintain our proprietary  position. Lastly, we monitor third parties  for activities that may
infringe our proprietary rights, as well as  the progression of third party patent applications that may
have the potential to create blocks to our products  or otherwise  interfere  with the development  of our
business. We are aware, for example, of U.S. patents, and corresponding international counterparts,
owned by third parties that contain claims related  to  ERTs, and small  molecules  for stabilizing  enzymes.
If any of these patents were to be asserted against  us,  there is no assurance  that  a court  would find in
our  favor or that, if we choose or are  required  to  seek a license, a license  to  any of these patents would
be available to us on acceptable terms  or at  all.

We  own or license rights to several issued  patents  in the U.S., current member states  of  the
European Patent Convention and numerous pending and issued foreign applications, which are foreign
counterparts of many of our U.S. patents.  We also  own or license rights to several pending U.S.
applications. Our patent portfolio includes patents and patent  applications with claims relating to

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methods of increasing and/or stabilizing deficient enzyme activity to treat genetic diseases. The patent
positions for migalastat, and ATB200/AT2221 pharmacological chaperone/ERT combination therapy are
described below and include both patents and patent applications we  own or exclusively license:

(cid:129) We have an exclusive license to six  issued U.S. patents that cover the use  of migalastat to treat

Fabry disease, as well as corresponding  European, Japanese, and  Canadian patents.  These
exclusively licensed U.S. patents relating  to  migalastat expire in 2018 (not including the Hatch-
Waxman statutory extension, which is described below),  while the European, Japanese, and
Canadian patents will expire in 2019 (not including  the Supplemental Protection Certificates or
SPC extensions, which are described below). The patents include claims  covering methods of
increasing the activity of and preventing the degradation of alpha-Gal A, and methods for the
treatment of Fabry disease using migalastat. In addition, we own two  issued U.S.  patents
directed to dosing regimens with migalastat that expire in 2027  (not including any extensions), as
well as a pending application which,  if granted, may  result in a patent that also expires in 2027
(not  including any extensions). Foreign  counterpart patents are issued in Australia, Europe,
Hong Kong, Mexico, and Japan, and  foreign applications are pending in Australia,  Canada,
Europe, Hong Kong, Japan, and Mexico. Further, we  own an issued U.S. patent directed to
synthetic steps related to the commercial process for preparing migalastat,  which expires in 2026,
as well as issued patents in China, Europe, Hong Kong, India, Israel, and Japan. We jointly own
issued U.S., European, Hong Kong, and Mexican patents covering a method of determining
whether male Fabry disease patients are  likely  to  respond to treatment with migalastat  which
expires in 2027. We have two issued U.S. patents covering a  method of treating a patient
diagnosed with Fabry disease with migalastat wherein the  Fabry patient has one of several
alpha-Gal A mutations. These patents  will expire in 2029. We  also  have a pending U.S.
application covering a method of determining which alpha-Gal A mutations  are likely to be
amenable to therapy with migalastat which,  if  granted, will expire in 2029. Foreign counterpart
patents have also been issued in Europe, Japan,  Canada, Mexico,  and  Australia; all of  which will
also expire in 2029.

(cid:129) We have an exclusive license to pending patent applications  covering the co-administration  of
migalastat with ERT (recombinant alpha-Gal A). Patents covering specific combinations have
issued in the U.S., Europe, Canada, China, India, Israel, Hong Kong, Japan, and Mexico. These
issued patents will expire in 2024. Other applications from  this family are  pending in the U.S.,
Europe, Canada, Brazil, China, Hong Kong, India,  Israel, Japan,  and Mexico. If  patents  issue
from these applications, expiration will  be  in 2024. We also  own a U.S. patent application
covering specific doses and dosing regimens  of  migalastat to treat Fabry disease in  combination
with ERT (recombinant alpha-Gal A) in  the U.S. and foreign counterpart applications  in
Australia, Brazil, Canada, Chile, Eurasia, Europe, Hong Kong, Israel, India, Japan, South  Korea,
Mexico, Singapore, Taiwan, and South Africa, and issued patents in Australia,  China, New
Zealand, and South Africa. Any patents issuing from  these applications will  expire in  2032.

(cid:129) We own two issued U.S. patents covering a high concentration co-formulation of recombinant

acid alpha-glucosidase and pharmacological  chaperone,  as well as  pending  patent  applications in
the U.S.,  Canada, Europe, Japan, Mexico, and South Korea. If patents issue from these
applications, expiration will be in 2033.

(cid:129) We own a U.S. patent application covering a  co-formulation of recombinant alpha-Gal A and

migalastat. If a patent issues from this  application,  expiration will  be  in 2033. Foreign
counterpart applications are pending  in Canada, Europe, and  Hong Kong.  The Taiwanese
counterpart has been issued as a patent.

(cid:129) As part of the Callidus acquisition, we acquired  a portfolio of patent applications including an

application series covering reagents and methods for coupling targeting peptides to recombinant

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lysosomal enzymes, including recombinant acid alpha-glucosidase. Patents in this series  are
issued in the U.S. and European, and  applications are pending in the  U.S., Europe, Japan,
Brazil, Canada, China, and, South Korea.  If patents issue  from these  applications, expiration  will
be in 2032 to 2034 depending on the  specific application.

(cid:129) Another patent application portfolio related  to  a modified lysosomal enzyme  (acid alpha-

glucosidase) that binds more effectively to the receptor and more  potent  than conventional
recombinant enzymes. This is pending in the U.S., Australia, Brazil, Canada, China,  Eurasia,
Europe, Israel, India, Japan, South Korea,  Mexico, Singapore, Taiwan, South Africa, and other
countries. If patents issue from this series, they will expire in 2035,  2026, or 2037.

(cid:129) As part of the acquisition of MiaMed, we  acquired  an exclusive worldwide license to certain
patent rights held by the Universit`a di Bologna. These patent rights include an issued  U.S.
patent and a pending U.S. patent application directed  to  novel CDKL5 fusion proteins,  as well
as pending counterpart patent applications in several foreign countries. Expiration of the issued
U.S. patent and the patent applications, if and when the applications issue, will  be  in 2035.

Individual patents extend for varying  periods depending on the effective date of filing of the patent

application or the date of patent issuance,  and  the legal term of the patents in the countries in which
they are obtained. Generally, patents  issued in  the U.S. are effective for:

(cid:129) The longer of 17 years from the issue date or 20  years  from the earliest effective filing  date, if

the patent application was filed prior to June  8,  1995; and

(cid:129) 20 years from the earliest effective  filing date, if the patent application was filed on or after

June 8, 1995.

The term of foreign patents varies in accordance with provisions of applicable local law,  but

typically is 20 years from the earliest effective filing date.

The U.S. Drug Price Competition and Patent Term Restoration Act of  1984, and  amendments

thereto, more commonly known as the Hatch-Waxman Act, provides  for an extension of one patent,
known as a Hatch-Waxman statutory extension, for  each New Chemical Entity (‘‘NCE’’) to compensate
for a portion of the time spent in clinical development and regulatory review. However,  the maximum
extension is five years and the extension  cannot extend the patent beyond 14 years from  the new drug
application (‘‘NDA’’) approval. Similar extensions are  available in European countries, known as SPC
extensions, Japan and other countries. However, in the United States  we will not know what,  if any,
extensions are available until a drug  is  approved. In addition, in the  U.S., under provisions of the Best
Pharmaceuticals for Children Act, we may be entitled  to  an additional six  month period of patent
protection Market Exclusivity and Orphan Drug Exclusivity, for completing pediatric  clinical studies in
response to an FDA issued Pediatric  Written Request  before  said  exclusivities expire.

The patent positions of companies like ours are generally uncertain  and  involve complex legal,
technical, scientific, and factual questions. Our ability  to  maintain and solidify our proprietary position
for our  technology will depend on our  success in promptly  filing patent applications on new  discoveries,
and in obtaining effective claims and enforcing those claims  once granted. We focus special attention
on filing patent applications for formulations and delivery  regimens  for our products in development to
further enhance our patent exclusivity for  those products. We  seek to protect our proprietary
technology and processes, in part, by contracting  with our  employees, collaborators, scientific  advisors,
and our commercial consultants to ensure that any inventions resulting from the relationship  are
disclosed promptly, maintained in confidence until  a patent application is filed, and preferably until
publication of the patent application,  and  assigned to us or subject  to  a right to obtain a license. We do
not know whether any of our owned  patent  applications or those patent  applications that are licensed
to us will result in the issuance of any patents.  Our  issued patents and those that may  issue in the
future, or those licensed to us, may be challenged, narrowed, invalidated, circumvented, or  be  found to

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be invalid or unenforceable, which could limit our ability to stop competitors  from marketing related
products and reduce the term of patent protection that we may have for our products. Neither we nor
our  licensors can be certain that we were the  first  to  invent  the inventions claimed in  our owned or
licensed patents or patent applications.  In  addition, our competitors may independently develop similar
technologies or duplicate any technology  developed by  us and  the  rights granted under any issued
patents may not provide us with any meaningful competitive advantages against these competitors.
Furthermore, because of the extensive  time required for development, testing, and  regulatory review of
a potential product, it is possible that any related patent may expire prior  to  or shortly after
commencing commercialization, thereby reducing the advantage of the  patent  to  our  business  and
products.

We  may rely, in some circumstances, on trade secrets to protect  our technology. However, trade
secrets are difficult to protect. We seek to protect  our trade secret technology and processes,  in part,  by
entering into confidentiality agreements  with  commercial partners, collaborators, employees,
consultants, scientific advisors, and other contractors, and  by  contracting with our employees and some
of our commercial consultants to ensure  that any trade secrets  resulting from such  employment  or
consulting are owned by us. We also  seek  to  preserve the integrity and  confidentiality of  our data and
trade secrets by maintaining physical  security of our premises and  physical and electronic security of
our  information technology systems. While  we have  confidence in these individuals,  organizations, and
systems, agreements or security measures may be breached, and  we may not have  adequate remedies
for any breach. In addition, our trade  secrets may otherwise  become known  or be discovered
independently by others. To the extent that our consultants, contractors, or  collaborators  use intellectual
property owned by others in their work  for us,  disputes  may arise as  to  the rights in related or  resulting
know-how and inventions.

License Agreements

We  have acquired rights to develop and  commercialize our product  candidates through licenses
granted by various parties. For information regarding  our  migalastat collaboration with GSK, please see
‘‘Strategic Alliances and Arrangements’’. For our  other license agreements, the following summarizes
our  material rights and obligations under those  licenses:

Mt. Sinai School of Medicine

We  have acquired exclusive worldwide patent rights to develop and commercialize migalastat and

other pharmacological chaperones for  the prevention  or treatment of human diseases or clinical
conditions by increasing the activity of wild-type and mutant enzymes pursuant to a license agreement
with Mt. Sinai School of Medicine (‘‘MSSM’’)  of New  York University.  Under  this agreement,  to  date,
we have paid no upfront or annual license fees and we have no milestone or  future payments other
than royalties on net sales. This agreement  expires upon expiration of the last of the licensed  patent
rights, which will be in 2019, subject to any patent  term extension that  may  be  granted, or 2024 if we
develop a product for combination therapy (pharmacological chaperone plus/ERT)  and a  patent  issues
from the pending application covering the  combination therapy, subject to any patent term  extension
that may be granted.

Under our license  agreements, if we  owe royalties on net  sales  for one of  our products to more
than one of the above licensors, then we  have the  right to reduce  the royalties owed to one licensor for
royalties paid to another. The amount of  royalties  to  be  offset is generally limited in each  license and
can vary under each agreement. For  migalastat in 2017,  we  incurred $1.1 million of  royalty expense
under the agreement with MSSM. Our  rights with  respect to  these agreements to develop and
commercialize migalastat may terminate, in whole or in  part, if we fail  to meet certain development  or
commercialization requirements or if we do not meet our obligations  to  make royalty  payments.

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Trademarks

In addition to our patents and trade secrets,  we have  registrations  and/or filed applications to
register certain trademarks in the U.S.  and/or abroad, including  AMICUS  THERAPEUTICS and
design, AMICUS ASSIST and design, CHART and design, AT THE FOREFRONT  OF THERAPIES
FOR RARE AND ORPHAN DISEASES, HEALING  BEYOND DISEASE,  OUR GOOD  STUFF
and GALAFOLD and design. These  trademarks  are registered or filed with the U.S. Patent and
Trademark Office and corresponding government  agencies  in a number of other countries.

Manufacturing

We  continue to rely on contract manufacturers to supply  the active biopharmaceutical ingredients
and final drug product for migalastat, other pharmacological  chaperones,  and our  next-generation ERT
product  candidates. The active biopharmaceutical ingredients and final formulations for these products
are manufactured under current Good  Manufacturing Practice  (‘‘cGMP’’). The components in  the final
formulation for each product are commonly used in other biopharmaceutical products and are well
characterized ingredients. We have implemented appropriate controls  for assuring the quality of both
active  biopharmaceutical ingredients and final drug  products. Product  specifications will  be  established
in concurrence with regulatory bodies at  the time  of  product registration.

Competition

Overview

The biotechnology and pharmaceutical industries are characterized by  rapidly advancing

technologies, intense competition, and a  strong emphasis on proprietary products. In addition, several
large pharmaceutical companies are  increasingly focused on  developing  therapies  for the  treatment of
rare diseases, both through organic growth and acquisitions and partnerships.  While  we believe  that  our
technologies, knowledge, experience, and  scientific resources, provide us  with competitive advantages,
we face potential competition from many  different sources, including commercial enterprises,  academic
institutions, government agencies, and  private and public research institutions. Any product candidates
that we successfully develop and commercialize will compete with both existing  and new therapies that
may become available in the future.

Many of our competitors may have significantly  greater  financial resources and  expertise associated

with research and  development, regulatory approvals, and  marketing approved products. These
competitors also compete with us in  recruiting and retaining qualified scientific and  management
personnel, as well as in acquiring technologies  complementary to, or necessary for, our programs.
Smaller or early-stage companies may  also  prove to be significant competitors, particularly  through
collaborative arrangements with large  and  established companies.

Our commercial opportunities could be reduced or eliminated  if our  competitors develop and

commercialize products that are safer,  more  effective, have fewer side effects, are  more convenient,
and/or are less expensive than products  that we may develop. In addition,  our  ability  to  compete may
be affected because in some cases insurers or  other  third  party payors seek to encourage the  use of
generic products. This may have the effect of making branded products less attractive  to  buyers.

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Major Competitors

Our major competitors include pharmaceutical and biotechnology  companies in  the U.S.  and

abroad that have approved therapies  or  therapies in development for LSDs. Other competitors are
pharmaceutical and biotechnology companies  that have approved  therapies  or therapies  in development
for rare diseases for which pharmacological chaperone technology, or next-generation ERT may be
applicable. Additionally, we are aware of several early-stage, niche pharmaceutical and  biotechnology
companies whose core business revolves around protein  misfolding; however,  we are  not  aware  that  any
of these  companies is currently working to develop products that would directly  compete with ours. We
are also aware of several pharmaceutical  and biotechnology  companies who  are developing various
treatments for novel ERTs. The key competitive factors  affecting the success of our product  candidates
are likely to be their efficacy, safety,  convenience, and price.

Any product candidates that we successfully develop and commercialize will compete  with existing

therapies and new therapies that may  become  available in the  future. The following table lists our
principal competitors and publicly available information on the  status of  their  clinical-stage product
offerings (U.S. dollars in millions):

Competitor

Indication

Product

Class of Product

Status

Sanofi Aventis:

. . . . . . . . . . . . . . . . Fabry disease

Fabrazyme(cid:4)

Pompe disease Myozyme(cid:4)/ Lumizyme(cid:4)
Fabry disease
Pompe disease GZ402666 (‘‘neo GAA’’)

GZ402671

ERT
ERT
Oral  GCS Inhibitor
ERT

Marketed
Marketed
Phase 2
Phase 3

2017  Sales

in millions
$816
$892
N/A
N/A

Shire . . . . . . . . . . . . . . . . . . . . . . Fabry disease

Protalix Biotherapeutics . . . . . . . . . . Fabry disease

Audentes . . . . . . . . . . . . . . . . . . . . Pompe Disease

Sangamo . . . . . . . . . . . . . . . . . . . . Fabry disease

Avrobio . . . . . . . . . . . . . . . . . . . . . Fabry disease

Pompe disease

Replagal(cid:4)

PRX-102

AT982

ST-920

ERT

ERT

Marketed

$472

Phase 2/3

Gene Therapy

Preclinical

Gene Therapy

Preclinical

AVR-RD-01
AVR-RD-03

Gene Therapy
Gene Therapy

Phase 1
Preclinical

Spark . . . . . . . . . . . . . . . . . . . . . . Pompe disease

Gene Therapy

Preclinical

JCR Pharmaceuticals:

. . . . . . . . . . . Fabry disease

Pompe disease

JR-051
JR-162

Valerion Therapeutics . . . . . . . . . . . . Pompe disease

Val-1221

Greenovation . . . . . . . . . . . . . . . . . Fabry disease

Moss-Agal

ERT
ERT

ERT

ERT

Filed in Japan
Preclinical

Phase 1

Phase 1

N/A

N/A

N/A

N/A
N/A

N/A

N/A
N/A

N/A

N/A

Government Regulation

FDA Approval Process

In the U.S., biopharmaceutical products are  subject to extensive regulation by the FDA. The
Federal Food, Drug, and Cosmetic Act,  Public Health  Services Act, and other  federal and state statutes
and regulations, govern, among other  things, the research, development, testing, manufacture, storage,
recordkeeping, approval, labeling, promotion and marketing, distribution, post-approval monitoring and
reporting, sampling, and import and export of biopharmaceutical products. Failure to comply with
applicable U.S. requirements may subject a  company to a variety of  administrative or judicial  sanctions,
such as FDA refusal to file a marketing  application,  to  issue Complete  Response letters or to not
approve pending NDAs or biologic product license applications (‘‘BLAs’’), or  to  issue warning letters,
product  recalls, product seizures, total  or partial suspension of production or  distribution, injunctions,
fines, civil penalties, litigation, government investigation, and criminal prosecution.

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Biopharmaceutical product development in  the U.S. typically involves nonclinical laboratory and
animal tests, the submission to the FDA of an Investigational New  Drug  application  (‘‘IND’’), which
must become effective before clinical testing may commence, and adequate  and well-controlled clinical
trials to establish the safety and effectiveness  of  the drug for each indication for which FDA  approval is
sought. Satisfaction of FDA pre-market approval requirements  typically takes many years and the
actual time required varies substantially  based upon the type, complexity,  and novelty of  the product or
disease. Preclinical tests include laboratory evaluation of product  chemistry, formulation, and toxicity, as
well as animal studies to assess the characteristics, potential safety, and efficacy of the  product. The
conduct of the preclinical tests must comply with federal regulations and requirements including Good
Laboratory Practice (‘‘GLP’’). The results of preclinical  testing are  submitted to the FDA  as part  of an
IND along with other information including information about product chemistry, manufacturing and
controls, and at least one proposed clinical trial protocol. Long-term preclinical safety evaluations, such
as animal tests of reproductive toxicity  and  carcinogenicity, continue during the IND phase of
development. Reproductive toxicity studies are required to  allow inclusion of women  of child bearing
potential in clinical trials, whereas carcinogenicity  studies are  required for registration. The  results of
these long-term studies would eventually be described in  product labeling.

A 30-day review period after the submission and receipt of an IND is required prior to the
commencement of clinical testing in humans. The IND  becomes effective 30 days after its receipt  by
the FDA, and trials may begin at that point unless the  FDA  notifies the sponsor  that  the investigations
are subject to a clinical hold.

Clinical trials usually involve the administration of the investigational new drug  to  healthy
volunteers or patients under the supervision of a qualified investigator. Clinical trials must be
conducted in compliance with applicable government  regulations, Good Clinical Practice (‘‘GCP’’), as
well as under protocols detailing the objectives of the trial,  the parameters to be used in monitoring
safety, and the effectiveness criteria to be evaluated. Each  protocol  involving testing on  U.S. patients
and subsequent protocol amendments must  be  submitted to the FDA as part of the IND.

The FDA may order the temporary or permanent discontinuation  of a clinical trial at  any time or

impose other sanctions if it believes that the clinical trial is  not  being  conducted  in accordance with
FDA requirements or presents an unacceptable risk to the clinical  trial patients. The study protocol  and
informed consent information for patients  in clinical trials must also be submitted to an Institutional
Review Board (‘‘IRB’’), for approval. An  IRB  may  also require  the clinical  trial  at the  site to be halted,
either temporarily or permanently, for failure to comply with the IRB’s  requirements, or may  impose
other conditions.

Clinical trials to support an NDA or BLA  for  marketing  approval are  typically  conducted  in three

sequential phases, but the phases may overlap. In Phase 1, the initial introduction of the drug into
healthy human subjects or patients, the  drug is tested to assess metabolism, pharmacokinetics,
pharmacological actions, side effects  associated with increasing doses, and, if possible,  early evidence  on
pharmacodynamics effects and effectiveness.

Phase 2 usually involves trials in a limited patient  population to determine the effectiveness of the

drug for  a particular indication or indications, dosage tolerance,  and optimum  dosage, and identify
common adverse effects and safety risks. If  a compound demonstrates evidence  of  efficacy  and an
acceptable safety profile in Phase 2 evaluations, Phase 3 trials are undertaken to obtain the additional
information about clinical efficacy and safety in  a larger number  of  patients over longer treatment
periods, typically at geographically dispersed clinical trial  sites,  to  permit  the FDA to evaluate  the
overall benefit-risk relationship of the  drug and to provide  adequate information for  the labeling  of  the
drug.

After completion of the required clinical testing, an NDA  or  BLA is prepared  and submitted to
the FDA for the determination of efficacy  and safety. FDA approval  of the NDA or BLA  is required

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before marketing of the product may begin in the  U.S. The NDA or  BLA must include the results of
all preclinical, clinical, and other testing and a  compilation of data relating to the product’s
pharmacology, chemistry, manufacture, and controls. The  cost of preparing and submitting  an NDA  or
BLA is substantial. Under federal law,  the submission of most NDAs and BLAs  is additionally subject
to a substantial application user fee;  although for  orphan drugs these fees  are waived, and the holder of
an approved NDA or BLA may also  be subject to annual product  and establishment user fees. These
fees are typically increased annually.

The FDA has 60 days from its receipt of an NDA or BLA to determine  whether  the application

will be accepted for filing based on the agency’s  threshold determination that it is sufficiently complete
to permit substantive review. Once the  submission  is accepted for filing, the FDA  begins  an in-depth
review. The FDA has agreed to certain performance goals  in the review of NDAs.  Marketing
applications are assigned review status during the filing period. Review status could be either  standard
or priority. Most such applications for standard review are reviewed within 12 months under  PDUFA V
(two  months for filing plus ten months  for review).  The FDA attempts to review a  drug  candidate that
is eligible for priority review within six months, as discussed below.  The review process may be
extended by the FDA for three additional months to evaluate major amendments submitted  during the
pre-specified PDUFA V review clock.  The FDA may also refer applications for novel  drug products  or
drug products which present difficult  questions of  safety or efficacy to an  Advisory Committee for
public review, typically a panel that includes  clinicians  and other experts, for  review, evaluation, and a
recommendation as to whether the application should be approved. The FDA  is not bound by the
recommendation of an Advisory Committee, but it  generally  follows such recommendations. Before
approving an NDA or BLA, the FDA will  typically  inspect one or more clinical sites to assure
compliance with GCP. Additionally, the FDA  will inspect  the facility or the facilities at which the  drug
is manufactured. The FDA will not approve the  product unless  compliance with cGMP is satisfactory
and the NDA or BLA contains data that provide substantial  evidence that the drug  is safe and effective
in the indication studied and to be marketed.

After the FDA evaluates the NDA or BLA and the manufacturing facilities, it issues an approval

letter or  a complete response letter.  Complete response letters outline  the deficiencies  in the
submission that prevent approval and may require substantial additional  testing or information for the
FDA to reconsider the application. If and when those deficiencies have been  addressed to the FDA’s
satisfaction in an amendment submitted  to the NDA  or BLA, the  FDA will  then issue  an approval
letter. The FDA has committed to reviewing such  resubmissions  in two or six months  depending  on the
type and extent of information included.

An approval letter authorizes commercial marketing of the drug  with specific prescribing

information for specific indications. As  a  condition of NDA approval, the FDA  may require substantial
post-approval commitments or requirements  to  conduct additional testing and/or surveillance  to
monitor the drug’s safety or efficacy and may impose other conditions,  including  distribution and
labeling restrictions which can materially  affect the  potential  market  and profitability of the drug.  Once
granted, product approvals may be withdrawn  if compliance with regulatory  standards is not
maintained, problems are identified following initial  marketing, or post-marketing commitments  are not
met.

The Hatch-Waxman Act

In seeking approval for a drug through an NDA, applicants are required to  list with the FDA
certain patent(s) with claims that cover the applicant’s product or approved method of use.  Upon
approval of a drug, each of the patents listed in the  application  for  the drug is then  published in  the
FDA’s Approved Drug Products with  Therapeutic Equivalence Evaluations, commonly  known  as the
Orange Book. Drugs listed in the Orange  Book can,  in turn, be cited by potential competitors  in
support of approval of an Abbreviated New Drug Application  (‘‘ANDA’’). An ANDA provides  for

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marketing of a drug product that has the  same route  of administration, active ingredients strength, and
dosage  form as the listed drug and has  been  shown through  bioequivalence testing to be, in most cases,
therapeutically equivalent to the listed drug.  ANDA applicants are not required to conduct or submit
results of preclinical or clinical tests to  prove  the safety or  effectiveness of their drug product, other
than the requirement for bioequivalence  testing. Drugs  approved in  this  way are commonly referred  to
as ‘‘generic equivalents’’ to the listed drug  and can  often be substituted by  pharmacists under
prescriptions written for the original listed ‘‘innovator’’  drug.

The ANDA applicant is required to certify to the  FDA concerning any patents  listed for the
approved product in the FDA’s Orange Book. Specifically, the applicant must certify that:  (i) the
required patent information has not been filed;  (ii) the  listed patent has  expired; (iii)  the listed  patent
has not expired, but will expire on a particular  date and approval  is sought  after patent expiration; or
(iv) the  listed patent is invalid or will not be infringed by the  new product. A certification that the new
product  will not infringe the already  approved product’s listed patents or that such  patents  are invalid
is called a Paragraph 4 certification.  If  the applicant does not challenge the  listed patents, the  ANDA
application will not be approved until all  the listed patents claiming  the referenced product have
expired.

If the ANDA applicant submits a Paragraph  4 certification to the FDA,  the applicant  must  also

send notice of the Paragraph 4 certification  to  the NDA  and patent holders once the ANDA has been
accepted for filing by the FDA. The NDA  and  patent  holders may then initiate  a patent infringement
lawsuit in response to the notice of the Paragraph 4 certification.  The filing  of a patent infringement
lawsuit within 45 days of the receipt  of a  Paragraph  4 certification automatically  prevents the FDA
from approving the ANDA until the  earlier of 30  months, expiration of the patent, settlement of the
lawsuit or a decision in the infringement  case that is favorable to the ANDA applicant.

Patent term and data exclusivity run in parallel.  An ANDA  application  also will not be approved

until any non-patent exclusivity, such  as exclusivity for obtaining approval  of a NCE, listed in the
Orange Book for the referenced product  has expired (New Chemical  Entity Market  Exclusivity).
Federal law provides a period of five  years following approval  of a drug containing no previously
approved active ingredients, during which  ANDAs  for generic  versions  of  those drugs cannot  be
submitted unless the submission contains  a Paragraph 4 certification that challenges a listed patent, in
which  case the submission may be made four years following the  original  product approval.

Federal law provides for a period of  three years of  exclusivity  following approval of a  listed drug

that contains previously approved active  ingredients  but is  approved in  a new  dosage form,  route of
administration or combination, or for a  new  use, the approval of which  was  required to be supported
by new clinical trials conducted by or for  the  sponsor,  during which the  FDA cannot  grant effective
approval of an ANDA based on that listed  drug for  the same new  dosage form,  route of  administration
or combination, or new use.

Other  Regulatory Requirements

Once an NDA or BLA is approved, a product will be subject to certain post-approval

requirements. For instance, the FDA closely  regulates the post-approval marketing and promotion of
drugs, including standards and regulations  for direct-to-consumer advertising, communications  regarding
unindicated uses, industry-sponsored scientific and educational activities,  and promotional activities
involving the internet.

Drugs may be promoted only for approved indications and in accordance with the provisions of the
approved labeling. Changes to some  of the conditions established  in an  approved application, including
changes in indications, new safety information, labeling, or manufacturing processes or facilities, require
submission and FDA approval of a new  NDA, NDA supplement,  BLA,  or BLA supplement before the

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change can be implemented. New efficacy claims require  submission  and approval of an NDA
supplement and BLA supplement for each new  indication.

The efficacy claims typically require new clinical data similar to those  included  in the original
application. The FDA uses the same procedures and actions in  reviewing NDA and BLA supplements
as it does in reviewing NDAs and BLAs. Additional exclusivity  may  be  granted for new  efficacy  claims.
Generic ANDAs cannot be labeled for  these types of claims until  the new exclusivity period  expires.

Adverse event reporting and submission  of periodic reports is required following FDA  approval of

an NDA or BLA. The FDA also may require post-marketing testing, known as Phase 4 testing, risk
evaluation and mitigation strategies, and surveillance to monitor the  effects of an approved product,  or
place conditions on an approval that could restrict the  distribution or use of the product. In  addition,
quality control as well as drug manufacture, packaging, and labeling procedures must continue to
conform to cGMP, after approval. Drug  manufacturers  and certain  subcontractors are required to
register their establishments with FDA  and  certain state agencies, and are subject to routine  inspections
by the FDA during which the agency  inspects manufacturing facilities  to  access compliance with cGMP.
Accordingly, manufacturers must continue  to  expend time,  money, and effort  in the areas  of production
and quality control to maintain compliance with  cGMP.  Regulatory  authorities  may withdraw product
approvals or request product recalls  if a company fails to comply with regulatory standards, if  it
encounters problems following initial  marketing, or if previously  unrecognized problems are
subsequently discovered.

Orphan Drugs

Under the Orphan Drug Act, the FDA may grant orphan  drug  designation  to  drugs intended  to

treat a rare disease or condition, which is  generally a disease or condition  that  affects fewer  than
200,000 individuals in the U.S. Orphan  drug designation must be requested before submitting  an NDA
or BLA. After the FDA grants orphan drug designation, the  generic identity  of the drug and its
potential orphan use are disclosed publicly by the FDA.  Orphan drug designation does not convey any
advantage in or shorten the duration  of the regulatory review  and approval  process. The  first  NDA or
BLA applicant with FDA orphan drug  designation for a particular  active  ingredient  to  receive FDA
approval of the designated drug for the  disease indication for which  it has such designation, is entitled
to a seven-year exclusive marketing period (Orphan Drug Exclusivity) in the U.S. for that product,  for
that indication. During the seven-year  period, the FDA may  not  finally  approve any  other  applications
to market the same drug for the same disease, except  in limited circumstances, such  as a showing of
clinical superiority to the product with orphan drug exclusivity or if  the license holder cannot supply
sufficient quantities of the product. Orphan drug exclusivity does not prevent  the FDA from approving
a different drug for the same disease or  condition, or the  same  drug for  a different disease or
condition, provided that the sponsor has  conducted appropriate  clinical trials  required for approval.
Among the other benefits of orphan  drug designation are tax credits for certain research and a waiver
of the NDA or BLA application user  fee for the  orphan indication.

Pediatric Information

Under the Pediatric Research Equity Act of 2007 (‘‘PREA’’),  NDAs or supplements  to  NDAs must
contain data to assess the safety and  effectiveness  of  the drug for the claimed indications in  all  relevant
pediatric subpopulations and to support dosing and administration for each pediatric subpopulation for
which  the drug is safe and effective. The FDA may grant deferrals  for  submission  of data or full or
partial waivers. Unless otherwise required  by regulation, PREA does  not apply  to  any drug for an
indication for which orphan designation  has been  granted.

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Fast Track Designation

Under the Fast Track program, the sponsor of an IND  may request the FDA  to  designate the drug
candidate as a Fast Track drug if it is intended  to  treat a serious  condition and  fulfill an unmet medical
need. The FDA must determine if the  drug candidate qualifies for Fast Track designation within
60 days of receipt of the sponsor’s request.  Once the FDA designates a drug as  a Fast Track  candidate,
it is required to facilitate the development and expedite  the review of that drug  by  providing more
frequent communication with and guidance to the  sponsor.

In addition to other benefits such as greater interactions with the FDA, the FDA  may initiate
review of sections of a Fast Track drug’s  NDA or BLA  before the application is  complete. This  rolling
review is available if the applicant provides,  and  the FDA approves, a  schedule for the submission  of
the remaining information and the applicant  pays applicable user fees. However, the FDA’s review
period as specified under PDUFA V  for filing and reviewing  an application does not begin until the
last section of the NDA or BLA has been submitted.  Additionally, the  Fast Track designation may  be
withdrawn by the FDA if the FDA believes that the  designation  is no  longer supported  by  data
emerging in the clinical trial process.

Breakthrough Therapy Designation

Breakthrough Therapy designation is  intended to expedite  the development and review of a
candidate that is planned for use to treat  a serious or life-threatening  disease  or condition when
preliminary clinical evidence indicates that the  drug  may demonstrate  substantial  improvement over
existing therapies on one or more clinically  significant endpoints.  A  Breakthrough Therapy designation
conveys all of the Fast Track program  features, as  well as more  intensive FDA guidance on an efficient
drug development program. The FDA  also has an organizational commitment  to  involve  senior
management in such guidance.

Priority Review

Under FDA policies, a drug candidate  is eligible for priority review, or review  within six  months
from filing for a new molecular entity (‘‘NME’’) or six  months from submission for a non-NME if the
drug candidate provides a significant  improvement compared to marketed  drugs in the treatment,
diagnosis, or prevention of a disease. A Fast Track designated drug candidate  would ordinarily  meet the
FDA’s criteria for priority review. The  FDA makes its determination of priority or  standard review
during the 60-day filing period after an  initial  NDA or BLA submission.

Accelerated Approval

Under the FDA’s accelerated approval regulations,  the FDA may approve a  drug  for a  serious or

life-threatening illness that provides meaningful therapeutic  benefit  to  patients  over existing treatments
based upon a surrogate endpoint that  is  reasonably  likely to predict clinical benefit. This  approval
mechanism is provided for under 21CRF314 Subpart H and Subpart E.  In this case,  clinical trials  are
conducted in which a surrogate endpoint  is used as  the primary outcome for approval. A  surrogate
endpoint  is reasonably likely to predict  clinical  benefit, or an  effect on  a clinical  endpoint that can be
measured earlier than an effect on 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. This
surrogate endpoint substitutes for a direct measurement  of  how  a  patient  feels,  functions, or survives
and is considered reasonably likely to  predict  clinical  benefit. Such surrogate endpoints may be
measured more easily or more rapidly than clinical endpoints. A drug 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. When  the Phase 4

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commitment is successfully completed,  the  biomarker is  deemed  to  be  a surrogate  endpoint. Failure to
conduct required post-approval studies  or confirm a clinical benefit during post-marketing  studies,
could lead the FDA to withdraw the  drug from the market on an expedited basis. All promotional
materials for drug candidates approved  under accelerated regulations are subject to prior review by the
FDA.

Section 505(b) (2)  New Drug Applications

Most drug products obtain FDA marketing approval  pursuant to an NDA, an ANDA, or  a BLA. A

fourth alternative is a special type of NDA, commonly  referred to as a Section 505(b) (2) NDA, which
enables the applicant to rely, in part,  on  the safety and efficacy data of  an  existing product, or
published literature, in support of its  application.

505(b) (2) NDAs often provide an alternate  path  to  FDA approval for  new or  improved

formulations or new uses of previously approved  products. Section 505(b)(2)  permits  the submission of
a NDA for which at least some of the information required  for approval comes from studies not
conducted by or for the applicant and for  which the applicant has not obtained a right of reference.
The applicant may rely upon certain  preclinical or clinical studies  conducted for an approved product.
The FDA may also require companies  to  perform  additional  studies or measurements  to  support the
change from the approved product. The FDA may then approve the new  product  candidate for all or
some of the label indications for which the referenced product has been  approved, as  well as for any
new indication sought by the Section  505(b) (2) applicant.

To the extent that the Section 505(b)  (2) applicant  is relying on  studies conducted for  an already-
approved product, the applicant is required to certify to the  FDA concerning any patents listed  for the
approved product in the Orange Book  to  the same extent as an ANDA applicant. Thus approval  of a
505(b)(2) NDA can be stalled until all  the listed patents claiming the referenced  product have expired,
until any non-patent exclusivity, such  as exclusivity for obtaining approval  of an NCE, listed in the
Orange Book for the referenced product  has expired, and,  in the case  of  a Paragraph 4 certification
and subsequent patent infringement suit,  until the earlier of 30 months, settlement of the  lawsuit  or a
decision in the infringement case that is  favorable  to  the Section 505(b)(2) applicant.

Patient Protection and Affordable Care  Act of 2010

The Biologics Price Competition and Innovation Act  of 2009 (‘‘BPCIA’’), which  was  enacted as

part of the Patient Protection and Affordable Care Act of 2010, as  amended by the  Health Care  and
Education Reconciliation Act of 2010 (‘‘PPACA’’) created  an abbreviated  approval  pathway for
biological products that are demonstrated to be ‘‘biosimilar’’ or  ‘‘interchangeable’’  with an
FDA-licensed reference biological product via an  approved BLA. Biosimilarity to an approved
reference product requires that there  be  no differences in conditions of use, route of administration,
dosage  form, and strength, and no clinically meaningful differences between the  biological  product and
the reference product in terms of safety,  purity,  and potency. Biosimilarity is demonstrated in steps
beginning with rigorous analytical studies  or ‘‘fingerprinting’’, in vitro studies, in vivo animal studies,
and generally at least one clinical study, absent a waiver from  the Secretary of Health and Human
Services. The biosimilarity exercise tests the hypothesis  that the investigational product and  the
reference product are the same. If at any point in  the stepwise biosimilarity  process  a significant
difference is observed, then the products are not biosimilar,  and the development of a  stand-alone
NDA  or  BLA is necessary. In order  to  meet the higher hurdle  of interchangeability, a  sponsor must
demonstrate that the biosimilar product can be expected  to  produce  the  same clinical result as  the
reference product, and for a product that  is administered  more than once, that the  risk of switching
between the reference product and biosimilar  product is  not greater  than  the risk  of maintaining the
patient on the reference product. Complexities associated with the larger,  and often more  complex,
structures of biological products, as well  as the  process by  which such products are  manufactured, pose

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significant hurdles to implementation  that are still  being  evaluated by the FDA. Under  the BPCIA, a
reference biologic is granted 12 years  of exclusivity from  the time of  first licensure of the reference
product.

Anti-Kickback, False Claims Laws, & the Prescription  Drug Marketing Act

In addition to FDA restrictions on marketing of pharmaceutical products, several other types  of
state and federal laws have been applied  to  restrict certain marketing practices  in the pharmaceutical
industry in recent years. These laws include anti-kickback statutes and false claims statutes. The federal
healthcare program anti-kickback statute prohibits, among other  things, knowingly  and willfully  offering,
paying,  soliciting, or receiving remuneration 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. 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. Violations of the anti-kickback statute are punishable
by imprisonment, criminal fines, civil  monetary  penalties, and exclusion from participation in  federal
healthcare programs. Although there  are  a number  of statutory  exemptions  and regulatory safe harbors
protecting certain common activities  from prosecution or other  regulatory  sanctions, the exemptions
and safe harbors are drawn narrowly, and practices  that involve remuneration intended to induce
prescribing, purchases, or recommendations may be subject  to  scrutiny if they do not qualify for an
exemption or safe harbor.

Federal false claims laws prohibit any person from knowingly presenting, or causing  to  be

presented, a false claim for payment to  the federal  government, or knowingly making,  or causing to be
made, a false statement to have a false claim paid. Recently, several pharmaceutical and other
healthcare companies have been prosecuted under these laws  for  allegedly inflating drug  prices they
report to pricing services, which in turn  were used by the government to set Medicare and Medicaid
reimbursement rates, and for allegedly  providing free  product to customers with the  expectation that
the customers would bill federal programs  for  the product. In  addition, certain  marketing practices,
including off-label promotion, may also violate  false claims laws. 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 payor.

Physician Drug Samples

As part of the sales and marketing process, pharmaceutical companies frequently provide samples

of approved drugs to physicians. The  Prescription  Drug  Marketing Act (the ‘‘PDMA’’) imposes
requirements and limitations upon the provision  of  drug samples  to  physicians, as  well as prohibits
states from licensing distributors of prescription drugs unless the state licensing program meets certain
federal guidelines that include minimum standards  for storage, handling,  and record  keeping. In
addition, the PDMA sets forth civil and  criminal  penalties for  violations.

Regulation Outside the U.S.

In addition to regulations in the U.S.,  we will be subject  to  a  variety of regulations  in other
jurisdictions governing clinical studies,  commercial sales, and  distribution  of our  products. Most
countries outside the U.S. require that  clinical trial applications be submitted  to  and approved by the
local regulatory authority for each clinical  study. In addition, whether  or  not  we obtain FDA  approval
for a product, we must obtain approval  of  a product  by  the comparable regulatory authorities  of
countries outside the U.S. before we  can commence clinical studies or marketing  of  the product  in
those countries. The approval process  varies from country  to  country,  and  the time  may be longer or
shorter than that required for FDA approval.

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To obtain regulatory approval of an orphan  drug  under EU regulatory  systems, we are mandated
to submit MAAs in Centralized Procedure.  The  centralized  procedure, which came into operation in
1995, allows applicants to obtain a marketing authorization that is valid throughout the EU.  It is
compulsory for medicinal products manufactured using biotechnological processes, for orphan medicinal
products and for human products containing a  new  active substance which  was not authorized  in the
Community before 20 May 2004 (date  of  entry  into  force of Regulation (EC) No 726/2004)  and which
are intended for the treatment of AIDS,  cancer,  neurodegenerative disorder  or diabetes. The
centralized procedure is optional for any other products  containing new  active substances  not
authorized in the Community before  20 May 2004 or for  products which  constitute a significant
therapeutic, scientific or technical innovation  or for  which a Community authorization is in the  interests
of patients at Community level. When a  company  wishes to  place  on  the market  a medicinal product
that is eligible for the centralized procedure, it  sends an  application  directly  to  the European  Medicines
Agency, to be assessed by the Committee  for Medicinal Products for Human Use (‘‘CHMP’’). The
procedure results in a Commission decision, which is  valid  in all EU Member States. Centrally-
authorized products may be marketed  in  all  Member States. Centralized  procedure:  Full copies of the
MA application are sent to a rapporteur and a co-rapporteur designated by the  competent EMA
scientific committee. They coordinate the  EMA’s assessment  of  the medicinal product  and prepare draft
reports. Once the draft reports are prepared (other  experts might be called upon for this purpose), they
are sent to the CHMP, whose comments  or objections are communicated to the  applicant. The
rapporteur is therefore the privileged interlocutor  of  the applicant and continues to play this role, even
after the MA has been granted.

The rapporteur and co-rapporteur then assess the  applicant’s  replies, submit them  for discussion to

the CHMP and, taking into account the  conclusions of this debate, prepare  a final  assessment report.
Once the evaluation is completed, the CHMP gives a  favorable  or  unfavorable opinion  as to whether to
grant the authorization. When the opinion  is favorable, it  shall  include the draft  summary of the
product’s characteristics, the package leaflet and the texts  proposed for the various  packaging materials.
The time limit for the evaluation procedure is  210 days. The EMA then has  fifteen days  to  forward its
opinion to the Commission. This is the  start of  the second phase of  the  procedure: the decision-making
process. The Agency sends to the Commission  its  opinion and assessment report, together with annexes
containing: the SmPC (Annex 1); the particulars of the  MAH  responsible for batch release,  the
particulars of the manufacturer of the  active substance  and  the  conditions of the marketing
authorization (Annex 2); and the labelling and  the package leaflet (Annex 3). The annexes are
translated into the 22 other official languages of the EU. During the  decision-making process, the
Commission services verify that the marketing authorization complies with Union law.  The Commission
has fifteen days to prepare a draft decision. The  medicinal product is assigned a Community
registration number, which will be placed  on  its  packaging if the  marketing  authorization is granted.
During  this period, various Commission directorates-general are  consulted  on the draft  marketing
authorization decision.

The draft decision is then sent to the  Standing Committee on Medicinal Products for  Human Use,

(Member States have one representative each in  both of these  committees) for their opinions. The
Centralized Procedure, which is compulsory for medicines produced by certain biotechnological
processes and optional for those which  are highly  innovative,  provides  for  the grant of a single
marketing authorization that is valid  for all  EU member states. The Decentralized Procedure  provides
for approval by one or more other, or  concerned, member states of an assessment of an application
performed by one member state, known  as the reference member state. Under  this procedure, an
applicant submits an application, or dossier,  and related materials including a draft  summary  of product
characteristics, and draft labeling and  package leaflet, to the  reference member state and concerned
member states. The reference member state prepares a draft assessment  and drafts of the related
materials within 120 days after receipt  of a valid application. Within 90  days of receiving the reference
member state’s assessment report, each concerned member state  must decide whether to approve the

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assessment report and related materials. If a  member  state  cannot  approve the assessment  report and
related materials on the grounds of potential serious risk to the public health, the disputed  points may
eventually be referred to the European  Commission, whose decision is binding  on all member states.

We  have obtained an orphan medicinal  product designation in the  EU from the  EMA for
migalastat for the treatment of Fabry  disease  (‘‘FD’’),  Gaucher disease (‘‘GD’’). The combination
product,  ATB200/AT2221, for the treatment of Pompe disease has currently received orphan  drug
designation in the US with a pending  review in  the EU. Applications  from  persons or companies
seeking ‘‘orphan medicinal product designation’’ for products  they intend to develop for the diagnosis,
prevention, or treatment of life-threatening or very serious  conditions that  affect not more than 5 in
10,000 persons in the EU are reviewed  by the Committee for Orphan  Medicinal Products (‘‘COMP’’).
In addition, orphan drug designation  can be granted if the drug  is intended  for a  life threatening,
seriously debilitating, or serious and chronic condition  in the EU and that without incentives it  is
unlikely that sales of the drug in the  EU  would be sufficient to justify  developing  the drug. Orphan
drug designation is only available if there is no  other satisfactory method approved in the EU of
diagnosing, preventing, or treating the  condition, or  if such a method exists, the proposed orphan  drug
will be of significant benefit to patients.

Orphan  drug designation provides opportunities for fee reductions for protocol assistance and

access to the centralized regulatory procedures before and  during the first year after marketing
approval, which reductions are not limited to the first year after marketing  approval for small and
medium enterprises. In addition, if a  product which has an  orphan drug  designation  subsequently
receives EMA marketing approval for  the indication for which  it has  such designation, the product is
entitled to orphan drug exclusivity, which means the  EMA may  not approve  any other application to
market the same drug for the same indication  for  a period  of 10 years. The exclusivity  period may  be
reduced to six years if the designation criteria are no  longer met, including  where it is  shown that the
product  is sufficiently profitable not  to  justify maintenance of market exclusivity. Competitors may
receive marketing approval of different  drugs or biologics  for  the  indications  for which the orphan
product  has exclusivity. In order to do so, however, they must demonstrate that the new drugs or
biologics provide a significant benefit over the existing orphan  product. This demonstration of
significant benefit may be done at the time of  initial approval or in post-approval  studies, depending on
the type of marketing authorization granted.

We  have obtained a positive opinion for  our PIP in the  EU for  migalastat for the treatment  of
Fabry disease as well. In May 2016, we  announced that we had received full European Commission
approval for migalastat HC1, under the product name GALAFOLD, as  a first-line therapy  for
long-term treatment of adults and adolescents aged 16  years and older  with a confirmed diagnosis of
Fabry disease and who have an amenable mutation. A pediatric investigation plan is  a development
plan  aimed at ensuring that the necessary  data are obtained  to  support the authorization  of a medicine
for children, through studies in children. All  applications  for marketing  authorization for  new medicines
have to include the results of studies as  described  in an agreed  pediatric investigation plan, unless  the
medicine is exempt because of a deferral or waiver. This requirement  also applies when  a marketing-
authorization holder wants to add a new  indication, pharmaceutical form, or route of administration for
a medicine that is already authorized and covered  by  intellectual property rights. Several  rewards and
incentives for the development of pediatric medicines for children are  available  in the EU.  Medicines
authorized across the EU with the results  of studies from a pediatric investigation plan  included in the
product  information are eligible for an  extension of  their  supplementary protection certificate  by  six
months. This is the case even when the  studies’  results are  negative. For orphan  medicines,  the
incentive is an additional two years of market exclusivity. Scientific advice and protocol assistance at
the Agency are free of charge for questions relating to the development of pediatric  medicines.
Medicines developed specifically for  children that are already  authorized but are not protected  by  a
patent or supplementary protection certificate  are eligible for a pediatric-use  marketing authorization

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(‘‘PUMA’’). If a PUMA is granted, the  product will benefit from 10 years of market protection as an
incentive.

We  have obtained orphan drug designation in  Japan for  migalastat for  the treatment  of Fabry

Disease. Amicus has approval of migalastat in Switzerland and has followed all their applicable
regulations.

The Ministry of Health, Labor, and Welfare, based on the  opinion of the Pharmaceutical Affairs
and Food Sanitation Council, grants  orphan status to drugs intended to address  serious illnesses with
high unmet medical need that affect fewer than 50,000  patients in Japan. Orphan  designation  provides
certain benefits and incentives, including  priority review for marketing authorization  and a  period of
10 years of market exclusivity if the drug candidate is approved for the  designated indication.

Pharmaceutical Pricing and Reimbursement

In the U.S. and markets in other countries, sales of any products for which we receive regulatory
approval for commercial sale will depend  in part  on the  availability of reimbursement from third party
payors. Third party payors include government health administrative authorities, managed care
providers, private health insurers, and other organizations. These third party payors are increasingly
challenging the price and examining the cost-effectiveness  of medical  products and services. In addition,
significant uncertainty exists as to the reimbursement  status of  newly  approved healthcare  product
candidates. We may need to conduct  expensive pharmacoeconomic studies in  order to demonstrate the
cost-effectiveness of our products. Our  product  candidates may not be considered cost-effective.
Adequate third party reimbursement  may not be available  to  enable  us to maintain price levels
sufficient to realize an appropriate return  on our  investment in product development.

In 2003, the U.S. government enacted legislation providing a partial prescription drug benefit for

Medicare recipients that began in 2006. Government payment for some of  the costs of  prescription
drugs may increase demand for any products for which we receive marketing  approval. However,  to
obtain payments under this program,  we would  be  required to sell products to Medicare  recipients
through managed care organizations and other health care delivery  systems operating pursuant  to  this
legislation. These organizations would  negotiate prices for our products, which are  likely to be lower
than we might otherwise obtain. Federal,  state, and local governments in  the U.S.  continue to consider
legislation to limit the growth of healthcare  costs, including the cost of prescription drugs. Future
legislation could limit payments for biopharmaceuticals such as  the drug candidates  that  we are
developing.

The marketability of any products for  which  we receive regulatory approval for commercial sale

may suffer if the government and third party payors fail to provide adequate coverage and
reimbursement. In addition, an increasing emphasis  on managed care in the  U.S. has  increased  and will
continue to increase the pressure on pharmaceutical pricing.

Employees

As of December 31, 2017, we had 325  full-time employees, 184 of whom  were  primarily engaged in

research and development activities and 141  of  whom provided selling and administrative  services.
None of our employees were represented by a labor union. We have  not  experienced any work
stoppages and consider our employee relations to be good.

Our Corporate Information

We  were incorporated under the laws  of the  State  of  Delaware  on February  4, 2002. Our global
headquarters are located at 1 Cedar  Brook  Drive, Cranbury,  NJ 08512 and  our  telephone number is
(609) 662-2000. Our website address is  www.amicusrx.com. We  make available free of charge on our
website our annual, quarterly, and current reports, including amendments to such  reports, as soon as
reasonably practicable after we electronically file  such material with,  or furnish such material to, the
U.S. Securities and Exchange Commission.

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Information relating to our corporate governance, including  our Code  of  Business  Conduct  for

Employees, Executive Officers and Directors,  Corporate  Governance Guidelines,  and information
concerning our senior management team, Board of Directors,  including Board Committees and
Committee charters, and transactions in  our securities  by  directors and executive officers, is  available
on our website at www.amicusrx.com under the ‘‘Investors  — Corporate Governance’’ caption  and in
print to any stockholder upon request. Any waivers or material amendments  to  the Code will be posted
promptly on our website.

We  have filed applications to register certain  trademarks in the U.S. and  abroad, including

AMICUS THERAPEUTICS & design, AT THE FOREFRONT OF THERAPIES FOR RARE AND
ORPHAN DISEASES, ZORBLISA,  GALAFOLD, and AMIGAL, FABRAZYME,  MYOZYME,
LUMIZYME, AND REPLAGAL are the  property of their respective  owners.

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ITEM 1A. RISK FACTORS

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

Risks Related to our Products and the Regulatory  Approval  and Clinical Development of our Product

Candidates

We depend heavily on sales of our first  product, migalastat  HCl, in  the EU.  Moreover, if we are unable to
obtain approval from the FDA or other  foreign regulatory authorities,  or if we are unable to commercialize
migalastat HCl successfully, or experience significant delays in doing so, our business could be materially
harmed.

We  have invested a significant portion of our efforts and financial resources in the development of

migalastat HCl for the treatment of Fabry  disease and rely upon sales of migalastat HCl primarily in
the EU. Our ability to generate material  product  revenues,  which may not occur for  the foreseeable
future, if ever, will depend heavily on the  successful  development, regulatory  approval, and
commercialization of migalastat HCl.  We  began the commercial  launch of migalastat HCl in  the EU in
May 2016 and continue to seek commercial approval in  multiple jurisdictions, including the United
States and Japan. Any adverse market  event with respect  to migalastat HCl, including failure to obtain
sufficient market acceptance, could have  a material adverse effect on our business, financial  condition
and results of operations. If our sales of  migalastat HCl were to decrease, or such sales  were
substantially or completely displaced in  the market, if we are  unable to achieve sufficient  market
acceptance of migalastat HCl by physicians, patients, third party payors  and others in the medical
community, or if we fail to receive commercial  approval in any additional jurisdictions, it could have a
material adverse effect on our business, financial condition and results of operations. In addition, if
migalastat HCl or similar products from  our  competitors were to become the subject  of litigation
and/or an adverse governmental action requiring us or  such competitors, as  applicable,  to  cease sales of
migalastat HCl, such an event could  have a material  adverse effect on  our  business,  financial condition
and results of operations.

Any delay or impediment in our ability  to  obtain  regulatory approval in any region, such as  the
U.S. or Japan, to commercialize, or, if approved, obtain coverage and adequate  reimbursement from
third-parties, including government payors, for migalastat HCl may  cause us to be unable to meet our
revenue guidance or to generate the  revenues necessary to  continue our  research and development
pipeline activities, thereby adversely affecting our business and our prospects  for future growth.

Further, the success of migalastat HCl will  depend  on a  number of factors, including the following:

(cid:129) obtaining a sufficiently broad label in  each territory that would not  unduly restrict  patient  access;

(cid:129) FDA and PMDA approvals for migalastat HCl;

(cid:129) continuing to build and maintain an infrastructure capable  of supporting product sales,

marketing, and distribution of migalastat HCl in  the EU, US, Japan and other territories where
we pursue commercialization directly;

(cid:129) establishing commercial manufacturing arrangements with third party manufacturers;

(cid:129) establishing commercial distribution  agreements with  third party  distributors;

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(cid:129) launching commercial sales of migalastat HCl,  where approved, whether alone or in

collaboration with others;

(cid:129) acceptance of migalastat HCl, where approved,  by patients, the medical community and third

party payors;

(cid:129) the regulatory approval pathway that we pursue for migalastat  HCl in the U.S.;

(cid:129) effectively competing with other therapies;

(cid:129) a continued acceptable safety profile of migalastat HCl;

(cid:129) obtaining and maintaining patent and trade  secret  protection and regulatory  exclusivity;

(cid:129) protecting our rights in our intellectual property portfolio; and

(cid:129) obtaining a commercially viable price for our products.

If we  do not achieve one or more of  these factors in a timely  manner  or  at all, we could

experience significant delays or an inability to successfully commercialize migalastat HCl, which would
materially harm our business.

If we are not able to obtain, or if there are  delays in obtaining, required  regulatory approvals, we will not
be able to commercialize our product or product candidates, and  our ability to generate revenue will  be
materially impaired.

Our product and product candidates, including migalastat  HCl, and the activities associated with

their development and commercialization,  including their  testing, manufacture, safety, efficacy,
recordkeeping, labeling, storage, approval, advertising, promotion, sale, distribution,  commercialization
and reimbursement are subject to comprehensive regulation by  the EMA, the PMDA, the FDA,  and
other regulatory agencies in the United States  and  by comparable  authorities  in other countries. As of
December 31, 2017, we have obtained regulatory approval  to  market  migalastat  in the EU, Switzerland,
Israel, Iceland, Liechtenstein, South  Korea, Canada,  and  Australia. Failure to obtain regulatory
approval for our product and product candidates will prevent  us from commercializing our product in
jurisdictions beyond those in which we  have obtained regulatory approval for our product or  in any
jurisdictions for our product candidates.

We  have only limited experience in filing  and  supporting the applications necessary to obtain
marketing approvals for product candidates and  are and will need to rely  on third party contract
research organizations, or CROs, to assist us  in this process. Securing  marketing  approval requires the
submission of extensive preclinical and clinical data and supporting information to regulatory
authorities for each therapeutic indication to establish the  product candidate’s  safety and  efficacy.
Securing marketing approval also requires  the submission of  information about the product
manufacturing process to, and inspection  of  manufacturing facilities  by, the regulatory  authorities.
Regulatory authorities may determine  that  migalastat HCl or any of our  other  product candidates  are
not effective or only moderately effective, or  have undesirable or unintended side  effects, toxicities,
safety profiles or other characteristics  that preclude us from  obtaining  marketing  approval or that
prevent or limit commercial use.

Obtaining approval for our product candidates is highly uncertain and we may  fail to obtain
regulatory approval in any or all jurisdictions.  The  review processes and the  processes of regulatory
authorities, including the FDA, EMA  and PMDA,  are extensive, lengthy, expensive, and  uncertain, and

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such regulatory authorities may delay,  limit,  or deny approval  of  migalastat HCl or any of our other
product  candidates for many reasons,  including,  but not limited to:

(cid:129) our failure to demonstrate to the satisfaction of the applicable regulatory authorities that

migalastat HCl or any of our other product candidates  are safe and effective  for a  particular
indication;

(cid:129) the results of clinical trials may not meet the level of statistical significance or  other  efficacy  or

safety parameters required by the applicable regulatory authorities  for approval;

(cid:129) the applicable regulatory authority may  disagree with  the number,  design, size,  conduct,  or

implementation of our clinical trials or  conclude that  the data fail  to  meet statistical or clinical
significance;

(cid:129) the applicable regulatory authority may  not  find the data  from  preclinical studies  and clinical

trials sufficient to demonstrate that the product candidate’s clinical and  other  benefits outweigh
its  safety risks;

(cid:129) the applicable regulatory authority may  disagree with  our interpretation of data from  preclinical
studies  or clinical trials, and may reject conclusions  from preclinical studies or clinical trials, or
determine that primary or secondary endpoints from  clinical trials were  not  met, or  reject safety
conclusions from such studies or trials;

(cid:129) the applicable regulatory authority may  not  accept data generated  at one or more  of our  clinical

trial sites;

(cid:129) the applicable regulatory authority may  determine that  we did not properly oversee  our clinical

trials or follow the regulatory authority’s advice or  recommendations  in designing and
conducting our clinical trials;

(cid:129) an advisory committee, if convened  by the  applicable  regulatory authority, may  recommend

against approval of our application or may recommend  that the applicable regulatory authority
require, as a condition of approval, additional preclinical studies or  clinical trials, limitations on
approved labeling or distribution and use restrictions, or even if  an advisory committee,  if
convened, makes a favorable recommendation, the  respective regulatory  authority  may still  not
approve the product candidate; and

(cid:129) the applicable regulatory authority may  identify deficiencies in the  chemistry, manufacturing, and
control sections of our application, our manufacturing processes, facilities,  or analytical methods
or those of our third party contract  manufacturers, and this may  lead to significant delays in  the
approval of our product candidates or  to  the rejection of our applications altogether.

The process of obtaining marketing approvals  is expensive, may take many years, if approval  is

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

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If clinical trials of our product candidates  fail to  demonstrate safety  and efficacy to  the satisfaction of the
FDA, EMA, PMDA or other foreign regulatory authorities,  or do  not  otherwise produce favorable  results,
we may experience delays in completing, or ultimately be unable to  complete, the development and
commercialization of our product candidates.

In connection with seeking marketing approval from  regulatory authorities  for the  sale of  any
product  candidate, we must complete preclinical  development and  then conduct extensive clinical trials
to demonstrate the safety and efficacy of our product candidates in  humans. Clinical testing is
expensive, difficult to design and implement, can take many years to complete, and is uncertain as  to
outcome. A failure of one or more clinical  trials can occur at any stage of testing. The outcome  of
preclinical testing and early clinical trials may not  be  predictive of the success of later clinical  trials,
and interim results of a clinical trial do not necessarily  predict final results. Moreover, preclinical and
clinical data are often susceptible to varying interpretations  and analyses, and  many companies that
have believed their product candidates  performed  satisfactorily  in preclinical  studies and clinical trials
have nonetheless failed to obtain marketing approval of their products.

For example, if the FDA ultimately decides not  to  approve  migalastat HCI NDA, we  may need to

complete additional Phase 3 clinical  trial(s) and  may need  to expend significantly more capital  to
pursue FDA approval of migalastat HCl. Similarly, we  do  not have a defined regulatory pathway for
our  lead biologic product ATB200/AT2221, which could  include accelerated or standard pathways is the
US and EU. If we are required to conduct additional clinical trials or other testing  of migalastat HCl,
ATB200/AT2221 or any other product  candidate that  we develop  beyond those tests and trials that we
contemplate; if we are unable to successfully complete our clinical trials or other testing;  if the  results
of these  trials or tests are not positive or are only modestly  positive;  or if there are safety concerns,  we
may:

(cid:129) choose not to seek regulatory approval in the  U.S.;

(cid:129) be delayed in obtaining marketing  approval for our product candidates;

(cid:129) not obtain marketing approval at all;

(cid:129) obtain approval for indications or patient populations that are not  as broad as intended or

desired;

(cid:129) obtain approval with labeling that includes  significant use  or distribution  restrictions or  safety

warnings, including boxed warnings;

(cid:129) be subject to additional post-marketing  testing requirements, safety strategies or restrictions,

such as a requirement of a risk evaluation and mitigation strategy,  or  REMS; or

(cid:129) have the product removed from the market after  obtaining regulatory  approval.

If we experience any of a number of possible  unforeseen events in  connection with  our  clinical trials,
potential regulatory approval or commercialization  of  our product candidates could be delayed  or prevented.

We  may experience numerous unforeseen events during,  or  as a  result of, clinical trials that could

delay or prevent our ability to receive  regulatory approval or commercialize  our product candidates,
including:

(cid:129) clinical trials of our product candidates may produce  negative or inconclusive results, and  we
may decide, or regulators may require  us,  to  conduct additional clinical trials or  abandon
product development programs;

(cid:129) the number of patients required for  clinical trials  of our product  candidates may be larger than
we anticipate, enrollment in these clinical trials may be slower  than we anticipate, or  patients
may drop out of these clinical trials at  a higher  rate than we  anticipate;

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(cid:129) we may be unable to enroll a sufficient number of patients  in our trials to ensure adequate

statistical power to detect any statistically significant treatment  effects;

(cid:129) our third party contractors may fail  to  comply  with regulatory requirements or meet their

contractual obligations to us in a timely manner, or at all;

(cid:129) regulators, institutional review boards,  or independent ethics committees may not authorize us or
our  investigators to commence a clinical trial or conduct  a clinical  trial at a prospective  trial site;

(cid:129) we may have delays in reaching or fail to reach agreement on acceptable  clinical trial contracts

or clinical trial protocols with prospective trial sites;

(cid:129) we may have to suspend or terminate clinical trials of  our product candidates  for various

reasons, including a finding that the participants are being exposed to unacceptable health risks;

(cid:129) regulators, institutional review boards,  or independent ethics committees may require that we or

our  investigators suspend or terminate clinical  research for various reasons, including
noncompliance with regulatory requirements  or a finding  that the participants are being exposed
to unacceptable health risks;

(cid:129) the cost of clinical trials of our product candidates may be greater than we anticipate;

(cid:129) the supply or quality of our product candidates or other materials necessary to conduct clinical

trials of our product candidates may be insufficient or inadequate; or

(cid:129) our product candidates may have undesirable side  effects or other unexpected characteristics,
causing  us or our investigators, regulators, institutional review boards  or independent ethics
committees to suspend or terminate  the trials.

Our product development costs will increase if we  experience delays in testing  or regulatory
approvals. We do not know whether  any  preclinical tests  or clinical  trials will begin as planned, will
need to be restructured or will be completed  on schedule, or at all. Significant preclinical study or
clinical trial delays also could shorten  any periods during which we may have  the exclusive right to
commercialize our product candidates, allow our competitors to bring products to market before  we do,
or impair our ability to successfully commercialize our product  candidates, and so  may harm our
business and results of operations.

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

We  may not be able to initiate or continue  clinical trials  for  our product candidates  if we are
unable to locate and enroll a sufficient number  of  eligible patients to participate  in these trials. Each of
our  diseases that our lead product candidates  are intended to treat are  characterized by small patient
populations, which could result in slow  enrollment of clinical trial  participants. For example, the  entry
criteria for one of our Phase 3 clinical  trials in migalastat  HCl for  Fabry  disease  to  support approval in
the United States (Study 011) required  that patients must have a genetic mutation that we believe is
responsive to migalastat HCl, and may not have received  ERT  in the past  or must have stopped
treatment for at least six months prior  to  enrolling in  the study. As  a result, enrollment of the  clinical
trial lasted for over two years. In addition, our competitors have  ongoing  clinical trials  for product
candidates that could be competitive with our product candidates. As a result, potential clinical trial
sites may elect to dedicate their limited  resources to participation  in our competitors’ clinical trials and
not ours, and patients who would otherwise be eligible for our clinical trials may  instead enroll in
clinical trials of our competitors’ product candidates.

Patient enrollment is affected by other  factors including:

(cid:129) severity of the disease under investigation;

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(cid:129) eligibility criteria for the clinical trial in  question;

(cid:129) perceived risks and benefits of the  product candidate under study;

(cid:129) efforts to facilitate timely enrollment in  clinical trials;

(cid:129) patient referral practices of physicians;

(cid:129) the ability to monitor patients adequately  during  and  after treatment; and

(cid:129) proximity and availability of clinical trial sites for  prospective patients.

Enrollment delays  in our clinical trials may result in increased development costs for  our  product

candidates, which would cause the value  of the  company to  decline and limit our ability to obtain
additional financing. Our inability to  enroll a sufficient number  of patients in any of our clinical trials
would result in significant delays or may require us to abandon one or more clinical  trials altogether.

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

Because we have limited financial and  managerial  resources, we focus  on research programs and

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

We  have based our research and development efforts on our  Chaperone-Advanced  Replacement

Therapy (‘‘CHART’’) platform technologies to develop next-generation  ERT  products for Fabry,
Pompe, and other  LSDs. Notwithstanding our large investment to date  and anticipated future
expenditures in proprietary technologies,  we  have not yet developed, and may never successfully
develop, any marketed drugs using this approach. As a  result of  pursuing the development of our
product  and product candidates using  our  proprietary technologies,  we may fail to develop products  or
product  candidates or address indications  based on  other  scientific  approaches that may  offer greater
commercial potential or for which there is a greater likelihood of  success. Research  programs to
identify new product candidates require substantial technical, financial and human resources. These
research programs may initially show  promise in identifying potential  product candidates,  yet fail to
yield product candidates for clinical development.

Initial results from a clinical trial do not ensure that the trial will  be successful and success in early stage
clinical trials does not ensure success in later-stage clinical trials.

We  will only obtain regulatory approval to commercialize a product candidate if  we can

demonstrate to the satisfaction of the FDA  or the applicable non-U.S. regulatory authority, in
well-designed and conducted clinical  trials, that the  product candidate is safe and effective and
otherwise meets the appropriate standards required for  approval for a particular  indication. Clinical
trials are lengthy, complex and extremely expensive processes  with uncertain results. A failure of one  or
more of our clinical trials may occur  at  any  stage  of testing.

Success in preclinical testing and early  clinical trials  does not ensure that  later  clinical trials  will  be

successful, and initial results from a clinical trial do not necessarily predict final  results. We cannot  be
assured that these trials will ultimately  be  successful.  In  addition, patients  may not be compliant with
their dosing regimen or trial protocols  or  they  may withdraw from the clinical trial at  any time for any
reason. For example, we recently reported  preliminary data from a Phase 1/2  clinical trial  of

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ATB200/AT2221 in Pompe disease. The  preliminary data is based on  a small  patient  sample and
reported before completion of the study  and  therefore may not be predictive of  future results, that the
results of additional preliminary data or  data from the completed study or  any future study may  not
yield results that are consistent with the preliminary data presented, that  we may not be able to
demonstrate the safety and efficacy of ATB200/AT2221, that later study results may not support  further
development, or even if such later results are favorable, that  we will not be able to successfully
complete the development of, obtain  accelerated,  conditional or standard regulatory  approval for, or
successfully commercialize ATB200/AT2221.

In addition, while the clinical trials of  our product candidates are designed based on the  available
relevant information, in view of the uncertainties inherent in drug development, such clinical trials may
not be designed with focus on indications,  patient  populations, dosing regimens, safety or  efficacy
parameters or other variables that will  provide the  necessary safety or efficacy data to support
regulatory approval to commercialize the resulting product candidates. This  is particularly  the case for
ATB200/AT2221 where we do not yet have a defined regulatory pathway  and there can be no  assurance
that regulators in the US, EU, Japan  or  other jurisdictions will accept the existing  Ph1/2  clinical data
set for  approval and without additional  clinical trials  or that future  trials will support approvals. In
addition, individual patient responses to the dose  administered of  a product  candidate may vary in a
manner that is difficult to predict. Also,  the  methods we  select to assess  particular safety or efficacy
parameters may not yield statistical precision in estimating our  product candidates’ effects  on study
participants. Even if we believe the data collected  from clinical trials of our product candidates are
promising, these data may not be sufficient  to  support approval by  the  FDA or  foreign regulatory
authorities. Preclinical and clinical data  can  be  interpreted  in different ways.  Accordingly, the FDA  or
foreign regulatory  authorities could interpret these  data in different ways from us or our partners,
which  could delay, limit or prevent regulatory approval.

In addition, our product and certain of our product candidates are  based on  our  active-site

pharmacological chaperone technology. To date, we  are not aware that  any product based on active-site
pharmacological chaperone technology has been approved by  the  FDA. As a result, if  the FDA
requires different endpoints than the  endpoints we  anticipate using or have used in our clinical trials,
or a different analysis of those endpoints, it may be more  difficult for us  to  obtain,  or we  may be
delayed in obtaining, FDA approval of our product candidates. If we are not successful  in
commercializing any of our products or product candidates, or are significantly delayed in doing so, our
business will be materially harmed.

We have  limited experience in conducting  and managing the  preclinical development activities and clinical
trials necessary to obtain regulatory approvals,  including approval by the FDA, PMDA and EMA.

We  have limited experience in conducting  and  managing the  preclinical development activities and

clinical trials necessary to obtain regulatory  approvals, including approval by the  FDA, PMDA and
EMA. As of December 31, 2017, we have  obtained regulatory  approval  to market one product  in the
EU, Switzerland, Israel, Iceland, Liechtenstein, South Korea,  Canada, and Australia.  Our limited
experience might prevent us from successfully  designing or  implementing a  clinical trial for our product
candidates. We have limited experience in conducting  and managing the  application  process necessary
to obtain regulatory approvals and we might  not  be  able to  demonstrate  that our product candidates
meet the appropriate standards for regulatory approval.  If we  are not successful in conducting and
managing our preclinical development activities  or clinical trials or obtaining regulatory approvals, we
might not be able  to commercialize our  product candidates, or  might  be  significantly  delayed in  doing
so, which will materially harm our business.

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We may  not be able to obtain or maintain  orphan  drug exclusivity for our  product or product candidates. If
our competitors are able to obtain orphan  drug  exclusivity for their products, we may not  be  able to  have
competing products approved by the applicable regulatory authority for  a significant period of  time.

Regulatory authorities in some jurisdictions, including the EU  and the United States, may
designate drugs for relatively small patient  populations as orphan drugs. We obtained orphan drug
designations from the FDA for migalastat  HCl for  the treatment of Fabry  disease  in February  2004. We
also obtained orphan medicinal product designation in the EU  for migalastat  HCl  in May  2006.
ATB200/AT2221 has also received this designation from the  FDA. Generally, if a product  with an
orphan drug designation subsequently  receives  the first marketing approval for the indication for which
it has such designation, the product is entitled to a period of market exclusivity,  which, subject  to
certain exceptions, precludes the EMA  from approving  another  marketing application for  a similar
medicinal product or the FDA from  approving another marketing  application  for the  same drug for the
same indication for that time period.  The applicable market exclusivity period for orphan  drugs is ten
years in the EU and seven years in the  United  States. The EU exclusivity  period can be reduced to six
years if a drug no longer meets the criteria for orphan  drug  designation,  including if the  drug  is
sufficiently profitable so that market  exclusivity  is no  longer  justified.

In the EU, a ‘‘similar medicinal product’’ is a medicinal product  containing a similar  active

substance or substances as contained  in  a currently authorized orphan medicinal product, and which  is
intended for the same therapeutic indication. For  a drug such as migalastat HCl, which  is composed of
small molecules, the FDA defines ‘‘same  drug’’ as  a drug that contains the same active moiety and  is
intended for the same use. Obtaining orphan drug exclusivity for  migalastat  HCl  for these indications,
both in the EU and in the United States,  may be important to the product candidate’s and our
CHART program’s success. If a competitor obtains orphan drug exclusivity for and approval of a
product  with the same indication as migalastat HCl before we do  and if  the competitor’s product  is the
same drug or a similar medicinal product  as ours, we could  be  excluded from the market for a certain
period of time.

Even if we obtain orphan drug exclusivity for migalastat HCl for these  indications, we may  not  be
able to maintain it. For example, if a competitive  product that is  the same drug or a  similar medicinal
product  as our product or product candidate is shown to be clinically  superior to our product  or
product  candidate, as applicable, any orphan drug exclusivity we have  obtained  will  not  block the
approval of such competitive product.  In addition, orphan drug exclusivity  will not prevent the approval
of a product that is the same drug as our product or product candidate if the FDA finds  that  we
cannot assure the availability of sufficient  quantities of the drug to meet the needs of the persons with
the disease or condition for which the  drug was  designated.

The FDA Reauthorization Act, signed into law in August 2017,  authorizes FDA to impose
additional clinical trial requirements on  manufacturers  seeking orphan  drug designation and/or
pediatric indications. Migalastat HCl  and  ATB200/AT2221  have obtained  orphan  drug designations
from the FDA. The impact, however,  of  future regulations on other product candidates  is uncertain
and could result in the need for additional clinical  trials.

Failure to obtain or maintain regulatory  approval in  international  jurisdictions would prevent us from
marketing migalastat or our other products abroad.

In order to market and sell migalastat HCl and our other products in the EU  and many  other
jurisdictions, we must obtain separate marketing approvals and comply with numerous and varying
regulatory requirements. The approval procedure  varies among  countries and  can involve additional
testing. The time required to obtain approval may differ from that  required to obtain FDA approval.
The regulatory approval process outside the  United States generally includes all of the risks associated
with obtaining FDA approval. In addition,  some countries outside the United States require approval  of

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the sales price of a drug before it can  be  marketed. In many countries,  separate procedures must be
followed to obtain reimbursement. We  may  not  obtain marketing, pricing  or reimbursement approvals
outside the United States on a timely basis, if at  all.  Approval by the FDA does not ensure  approval by
regulatory authorities in other countries  or jurisdictions, and approval by one regulatory authority
outside the United States does not ensure approval by regulatory authorities in  other countries or
jurisdictions or by the FDA. We may  not  be able to file for marketing approvals  and may  not  receive
necessary approvals to commercialize  our products in any market. Regulatory approvals in countries
outside the United States do not ensure  pricing approvals  in those countries or in  any other  countries,
and regulatory approvals and pricing  approvals  do not ensure  that reimbursement will be obtained.

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

Undesirable side effects caused by our product  or product  candidates could interrupt, delay or  halt

clinical trials and could result in the  denial  of regulatory  approval by the FDA, EMA  or other
regulatory authorities for any or all targeted indications, and  in turn prevent us from  commercializing
our  product or product candidates and  generating  revenues from their sale. In addition, if we  or others
identify undesirable side effects caused  by our products or product  candidates after  receipt of
marketing approval:

(cid:129) regulatory authorities may require  the addition of restrictive  labeling  statements;

(cid:129) regulatory authorities may withdraw their approval of the product; and

(cid:129) we may be required to change the  way the  product is  administered  or  additional clinical trials

are conducted.

Any of these events could prevent us  from achieving  or maintaining market acceptance of the

affected product or product candidate  or could substantially increase the costs  and expenses of
commercializing the product or product  candidate, which in  turn  could delay or prevent us from
generating significant revenues from its  sale  or adversely affect  our reputation.

If we are unable to establish sales and  marketing  capabilities or  enter into agreements  with third parties to
market and sell our product or product candidates,  we may not be  successful in commercializing migalastat
HCl or any product candidate if and when they  are approved.

We  have only recently built our sales  and marketing infrastructure and have little experience in the

sale and  marketing of pharmaceutical products.  To  achieve commercial success for  any approved
product,  we must continue to develop and maintain a sales and marketing organization  or outsource
these functions to third parties. We are continuing  to  establish our own sales and marketing capabilities
and to promote migalastat HCl in the EU and other international geographies with a targeted sales
force, and will do the same in the United States if or when migalastat HCl  or any  other  product
candidate is approved in the United States.  There are risks involved  with establishing our  own sales
and marketing capabilities and entering  into  arrangements with  third  parties to perform these services.
For example, recruiting and training  a sales  force is expensive and time consuming  and could delay any
product  launch. If the commercial launch  of  a product candidate for  which we recruit  a sales  force and
establish marketing capabilities is delayed or does not occur for  any reason, we  would have prematurely
or unnecessarily incurred these commercialization  expenses. This  may be costly, and  our  investment
would be lost if we cannot retain or reposition our sales and marketing  personnel. Similarly,  if we enter
into agreements with third parties, including the out  licensing of our product  or product  candidates, we
may choose to reduce or eliminate our sales and marketing operations and thereby lose our
commercialization investment.

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Factors that may inhibit our efforts to  commercialize migalastat HCl and  our product  candidates, if

and when they are approved by regulatory  authorities, including  the FDA,  PMDA  and EMA, on  our
own include:

(cid:129) our inability to recruit, train and retain adequate numbers  of effective sales and marketing

personnel;

(cid:129) the inability of sales personnel to obtain access to adequate numbers of physicians to prescribe

any future products;

(cid:129) the lack of complementary products to be offered  by sales personnel, which may  put  us  at a

competitive disadvantage relative to companies with more extensive product lines;

(cid:129) unforeseen costs and expenses associated with  creating an independent sales and  marketing

organization; and

(cid:129) efforts by our competitors to commercialize  products at or about  the time when  our product

candidates would be coming to market.

We  may also co-promote or out license our product or product candidates in various  markets  with

pharmaceutical and biotechnology companies  in instances where we believe  that  a larger  sales  and
marketing presence will expand the market or accelerate penetration. If we do  enter into arrangements
with third parties to perform sales and marketing services, our product revenues  will be lower than if
we directly sold and marketed our products and any revenues received under  such arrangements will
depend  on the skills and efforts of others.

We  may not be successful in entering  into  distribution arrangements and  marketing alliances with

third parties. Our failure to enter into  these  arrangements on favorable terms could delay  or impair our
ability to commercialize our product and  product candidates  and  could increase  our  costs of
commercialization. Dependence on distribution arrangements and  marketing alliances to commercialize
our  products and product candidates  will subject us to a  number of risks,  including:

(cid:129) we may not be able to control the amount and  timing of resources that our distributors may

devote to the commercialization of our product candidates;

(cid:129) our distributors may experience financial difficulties;

(cid:129) our distributors may experience compliance related issues and associated government

investigations;

(cid:129) business combinations or significant changes in  a distributor’s business strategy  may also
adversely affect a distributor’s willingness or  ability to complete its obligations under  any
arrangement; and

(cid:129) these arrangements are often terminated or  allowed  to  expire, which could interrupt the

marketing and sales of a product and decrease our revenue.

If we  are unable to establish adequate  sales, marketing and distribution capabilities, whether
independently or with third parties, we  may  not  be  able  to generate product revenue  at our current
guidance and may not ever become profitable.

If the market opportunities for our product  or product candidates are smaller  than we  believe they  are, then
our revenues may be adversely affected and  our business may suffer.

Each  of the diseases that our product  and most  advanced product candidates are being developed

to address is rare. Our projections of  both the number of people who have  these diseases,  as well as

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the subset of people with these diseases  who  have the potential  to  benefit from treatment  with our
product  candidates, are based on estimates.

Currently, most reported estimates of the  prevalence of  these  diseases are based on studies  of

small subsets of the population of specific geographic areas,  which are  then extrapolated  to  estimate
the prevalence of the diseases in the  broader world population. In  addition,  as new  studies are
performed the estimated prevalence of  these  diseases may change. There can be no  assurance that the
prevalence of Fabry disease or Pompe  disease in the  study populations, particularly in these newer
studies,  accurately reflects the prevalence  of these  diseases  in the broader world  population. If  our
estimates of the prevalence of Fabry  disease or  Pompe  disease,  or  of the number of patients who  may
benefit from treatment with our product candidates  prove  to  be  incorrect, the market opportunities  for
our  product and product candidates may  be smaller than  we believe  they  are,  our  prospects for
generating revenue at our guidance levels may  be  adversely  affected and our business may suffer.

Migalastat HCl or any of our product candidates  that receive regulatory approval  may fail to achieve the
degree of market acceptance by physicians, patients, third party payors and others  in  the medical
community necessary for commercial success.

Migalastat HCl and any of our other products or product candidates that  receive regulatory
approval may nonetheless fail to gain sufficient market acceptance  by physicians, patients,  third party
payors and others in the medical community. If these products  do not achieve an adequate level  of
acceptance, we may not generate significant product revenues or any  profits  from operations. The
degree of market acceptance of our product  candidates, if approved for commercial sale,  will  depend
on a number  of factors, including:

(cid:129) the efficacy and potential advantages compared to alternative treatments;

(cid:129) the prevalence and severity of any  side effects;

(cid:129) the ability to offer our product and product candidates for sale at competitive prices;

(cid:129) convenience and ease of administration compared to alternative treatments;

(cid:129) the willingness of the target patient population to try  new  therapies and of physicians to

prescribe these therapies;

(cid:129) the strength of marketing and distribution  support and  timing of market introduction of

competitive products;

(cid:129) publicity concerning our products or competing  products and treatments; and

(cid:129) sufficient third party coverage or reimbursement.

Our ability to negotiate, secure and maintain third party coverage and reimbursement may  be

affected by political, economic and regulatory developments in  the United States,  the EU and other
jurisdictions. Governments continue to impose cost containment  measures, and  third  party payors are
increasingly challenging prices charged  for medicines and examining their cost  effectiveness,  in addition
to their safety and efficacy. These and other similar developments  could significantly limit the  degree of
market acceptance of migalastat HCl  or  any of our product candidates that receive marketing  approval
and we may fail to meet our revenue targets.

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

The development and commercialization of  new drug products is highly competitive. We  face
competition with respect to our current  product or  product candidates  and any products we  may seek
to develop or commercialize in the future  from major  pharmaceutical companies, specialty
pharmaceutical companies and biotechnology  companies worldwide. For example,  several large
pharmaceutical and biotechnology companies  currently  market and sell products  for the  treatment of
lysosomal storage disorders, including  Fabry  disease. These products include Sanofi  Aventis’
Fabrazyme(cid:4) and Shire plc’s Replagal(cid:4), as well as other Fabry treatment products in development. In
addition, Sanofi markets and sells Myozyme(cid:4) and Lumizyme(cid:4) for the treatment of Pompe disease. We
are also aware of other enzyme replacement and substrate reduction  therapies  in development by third
parties for Pompe, as well as potential  gene  therapies for both Fabry  and  Pompe.

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. Our competitors may
develop products that are more effective, safer,  more  convenient or less costly than  any that we are
developing or that would render our  product candidates  obsolete  or noncompetitive.  Our competitors
may also obtain FDA, EMA, or other  regulatory approval for  their products more  rapidly than we may
obtain approval for ours. We may also  face competition from off-label use  of  other approved therapies.
There can be no assurance that developments by others  will not  render our  product candidates or any
acquired products obsolete or noncompetitive either during the research phase or once  the products
reaches commercialization.

We  believe that many competitors, including  academic institutions, government agencies, public

and private research organizations, large  pharmaceutical companies and smaller more focused
companies, are attempting to develop therapies for many of  our target indications.  Many of  our
competitors have significantly greater  financial resources  and expertise in research and development,
manufacturing, preclinical testing, conducting  clinical trials,  obtaining regulatory approvals, prosecuting
intellectual property rights and marketing approved products than we do.  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
or advantageous to our business. In addition,  if we obtain regulatory approvals  for our products,
manufacturing efficiency and marketing capabilities are likely to be significant competitive factors.  We
currently relay on third party manufacturers for all our products and product candidates,  and a  limited
sales force and marketing infrastructure for  migalastat HCl. Further, many  of  our  competitors have
substantial resources and expertise in  conducting collaborative arrangements,  sourcing in-licensing
arrangements, manufacturing and acquiring  new business lines or businesses that are greater than our
own.

A variety of risks associated with international  operations could  materially  adversely  affect our business.

Migalastat HCl, and any of our other product candidates that may  be  approved in  the future  for

commercialization in the EU, or in other foreign  countries, are or will  be  subject to additional  risks
related to international operations or entering into international  business  relationships, including:

(cid:129) different regulatory requirements for maintaining approval  of drugs in foreign  countries;

(cid:129) reduced protection for contractual and intellectual property rights in some countries;

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(cid:129) unexpected changes in tariffs, trade barriers  and regulatory requirements;

(cid:129) economic weakness, including inflation, or political instability in particular foreign  economies

and markets;

(cid:129) compliance with tax, employment, immigration and labor  laws for employees living or traveling

abroad;

(cid:129) foreign currency fluctuations, which could result  in increased operating expenses and reduced

revenue, and other obligations incident to doing business in another  country;

(cid:129) workforce uncertainty in countries  where labor unrest is more common than  in the United

States;

(cid:129) noncompliance with the U.S. Foreign Corrupt  Practices Act, the U.K.  Bribery Act  2010 and

similar anti-bribery and anti-corruption laws in other  jurisdictions;

(cid:129) tighter restrictions on privacy and the collection  and use of patient data;  and

(cid:129) business interruptions resulting from geopolitical actions, including war and terrorism, or natural

disasters including earthquakes, typhoons,  floods  and fires.

We  have no prior experience in these areas. In addition, there are complex regulatory, tax,  labor

and other legal requirements imposed by both the  EU and many of the individual  countries in Europe,
Asia and Latin America with which we  will need  to  comply. Many U.S.-based biopharmaceutical
companies have found the process of  marketing their own products in Europe and other international
geographies to be very challenging.

Following the receipt of marketing approval of our product or  any product  candidates, the  products may
become subject to unfavorable pricing regulations, third party coverage and reimbursement practices or
healthcare reform initiatives, which would  harm our business.

The regulations and practices that govern marketing approvals,  pricing, commercialization,
coverage and reimbursement for new drug  products vary widely from country to country. Current and
future legislation may significantly change  the approval requirements in ways  that  could  involve
additional costs and cause delays in obtaining  approvals. Some countries,  including almost  all  of the
member states of the European Economic Area,  require approval  of  the sale  price of a drug before it
can be marketed. In many countries,  the pricing review period begins after marketing or product
licensing approval is granted. In some  foreign markets, including the European market, prescription
pharmaceutical pricing remains subject  to  continuing  governmental control  even after  initial approval  is
granted. As a result, we might obtain marketing approval for  a product  in a particular country, but then
be subject to price regulations that delay  our  commercial launch of  the  product, possibly for lengthy
time periods, and negatively impact any  revenues we are able to generate from the  sale of the  product
in that country. Adverse pricing limitations may hinder our ability  to  recoup  our  investment in one or
more product candidates, even if our product candidates obtain marketing approval.

Our ability to commercialize migalastat HCl or  any product candidate successfully also  will  depend

in part on the extent to which coverage and  reimbursement for these products  and related treatments
will be available from government health  administration  authorities, private health insurers and  other
organizations. Government authorities and other third party payors, such as private health insurers and
health maintenance organizations, decide which medications they will pay  for and establish
reimbursement levels. A primary trend  in the EU  and U.S. healthcare  industries and  elsewhere is cost
containment. It is currently unknown what  impact, if any, the current administration and  Congress in
the U.S.  will have on pricing and reimbursement, particularly with  respect to government  programs
such as Medicare and Medicaid.. For  the last several  years  government authorities and other third party

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payors have attempted to control costs  by  limiting coverage and the amount of reimbursement  for
particular medications. Prices at which  we  or  our  customers seek  reimbursement for  our products can
be subject to challenge, reduction or denial  by the  government and other payers. Increasingly,  third
party payors are requiring that drug  companies provide them  with predetermined discounts from list
prices and are challenging the prices  charged for medical products.  We cannot  be  sure that coverage
and reimbursement will be available  for migalastat  HCl  or any  product that we commercialize and, if
coverage and reimbursement are available, the  level of  reimbursement. Reimbursement  may impact the
demand for, or the price of, any product  candidate for  which we obtain marketing  approval. Obtaining
reimbursement for migalastat HCl and our  other product  candidates when approved may  be
particularly difficult because of the higher prices typically associated with drugs  directed at smaller
orphan populations of patients and the pricing and reimbursement of competitive products.  In addition,
third party payors are likely to impose strict  requirements  for reimbursement  of  a higher priced drug. If
reimbursement is not available or is available  only  to  limited levels, we may not be able to successfully
commercialize any product for which we  obtain  marketing  approval.

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

Any product or product candidate for which we obtain  marketing  approval, along  with the

manufacturing processes, post-approval  clinical data, labeling, advertising and  promotional  activities for
such product, will be subject to continual requirements of and review by the FDA,  EMA, PMDA and
other regulatory authorities. For example,  the FDA’s requirements  include submissions of  safety and
other post-marketing information and  reports, registration requirements, Current  Good Manufacturing
Practices, or cGMP, requirements relating  to manufacturing, quality control, quality assurance and
complaints and corresponding maintenance of  records and documents, requirements regarding the
distribution of samples to healthcare professionals  and recordkeeping. Even if marketing approval of  a
product  candidate is granted, the approval may be subject  to  limitations  on the indicated uses  for which
the product may be marketed or may  be  subject  to  significant conditions of  approval, including the
requirement of a REMS. The FDA also  may impose requirements for  costly post-marketing  studies or
clinical trials and surveillance to monitor  the  safety or efficacy of the  product. The labeling, advertising,
promotion, marketing and distribution of a drug  or biologic product  also must be in  compliance with
FDA requirements which include, among  others, promotional activities, standards  and regulations for
direct-to-consumer advertising, promotional activities involving  the internet,  and industry  sponsored
scientific and educational activities. In  general, all product  promotion must  be  consistent with  the
labeling approved by the FDA for such  product, contain a  balanced presentation of  information on the
product’s uses, benefits, risks, and important safety information and limitations  on use, and  otherwise
not be false or misleading. The FDA,  has  very  broad  enforcement authority, and failure to abide by
these regulations can result in penalties, including  the issuance of a warning letter directing  a company
to correct deviations from regulatory standards and enforcement  actions that can include seizures,
injunctions and criminal prosecution.  Failure  to  comply  with applicable FDA requirements  and
restrictions also may subject a company to adverse publicity and enforcement action  by  the FDA, the
U.S. Department of Justice (‘‘DOJ’’)  or the Office of the Inspector General of  the U.S.  Department of
Health and Human Services (‘‘HHS’’) as  well as state authorities.  This  could subject the company to a
range of penalties that could have a  significant commercial impact, including civil and  criminal fines
and agreements that materially restrict the manner in which a company promotes or distributes its
products.

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In addition, later discovery of previously unknown adverse events or  other  problems  with our
products, manufacturers or manufacturing  processes, or failure  to  comply with  regulatory requirements,
may yield various results, including:

(cid:129) restrictions on such products, manufacturers  or manufacturing processes;

(cid:129) changes to or restrictions on the labeling or marketing of  a  product;

(cid:129) restrictions on product distribution  or use;

(cid:129) requirements to implement a REMS;

(cid:129) requirements to conduct post-marketing studies or clinical trials;

(cid:129) warning or untitled letters;

(cid:129) withdrawal of the products from the  market;

(cid:129) refusal to approve pending applications or  supplements to approved  applications that we  submit;

(cid:129) recall of products;

(cid:129) fines, restitution or disgorgement of profits or revenues;

(cid:129) suspension or withdrawal of marketing approvals;

(cid:129) refusal to permit the import or export of our products;

(cid:129) product seizure;

(cid:129) injunctions; or

(cid:129) the imposition of civil or criminal penalties.

Non-compliance with EU requirements regarding  safety monitoring or pharmacovigilance, and with

requirements related to the development  of  products for the  pediatric  population, can also result in
significant financial penalties. Similarly,  failure to comply with the EU’s requirements regarding  the
protection of personal information, which  are  scheduled to be enforced beginning  May 25,  2018, can
also lead to significant penalties and sanctions and business restrictions.

If we,  or our suppliers, third party contractors, clinical investigators or collaborators are  slow to

adapt, or are unable to adapt, to changes in  existing regulatory requirements  or adoption of new
regulatory requirements or policies, we  or our collaborators may lose  marketing approval for  our
products when and if any of them are approved,  resulting in decreased revenue from milestones,
product  sales or royalties.

Our relationships with customers, healthcare  providers,  patients, patient organizations,  charitable
foundations and third party payors will  be  subject  to applicable anti-kickback, fraud and abuse, anti-bribery
and corruption and other healthcare laws and regulations, which could expose us  to criminal  sanctions,
civil penalties, contractual damages, reputational harm and diminished profits and  future earnings.

Healthcare providers, physicians and  payors play a  primary  role in  the recommendation  and
prescription of any product candidates for  which we may obtain marketing approval.  Increasingly,
patients, patient organizations and charitable foundations also can influence selection  of and  payment
for therapies. Our future arrangements with payors, healthcare providers, patient organizations,
charitable foundations and patients may  expose us to broadly applicable fraud  and abuse, anti-bribery
and corruption, and other healthcare  laws  and regulations that may constrain the business or financial
arrangements and relationships through which we market, sell and distribute any product  candidates for

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which  we may obtain marketing approval. Even though we do  not  and  will not control referrals of
healthcare services or bill directly to Medicare,  Medicaid or other  third party  payors, federal,  state and
foreign healthcare laws and regulations pertaining to fraud and abuse, anti-bribery and corruption,
interaction with patient organizations,  charitable foundations, and patients’  rights are  and will be
applicable to our business. Restrictions  under applicable federal,  state and foreign healthcare laws and
regulations may affect our ability to operate and expose us to areas of risk, including:

(cid:129) the U.S. federal Anti-Kickback Statute, which prohibits, among other  things, knowingly  and

willfully soliciting, offering, receiving or  providing remuneration,  directly or indirectly, in  cash or
in kind, to induce or reward either the referral of an individual for, or the  purchase,  order or
recommendation of, any good or service, for which  payment may be made under  federal and
state healthcare programs such as Medicare and Medicaid.  A  person or entity  does not need to
have actual knowledge of the statute or specific intent  to  violate it in  order to have  committed a
violation. Several other countries, including the  United Kingdom, have enacted  similar
anti-kickback, fraud and abuse, and healthcare laws and regulations;

(cid:129) the U.S. federal False Claims Act, which  imposes criminal and civil penalties,  including through
civil whistleblower or qui tam actions, against  individuals or entities  for knowingly  presenting,  or
causing  to be presented, to the federal government, claims for  payment that are false or
fraudulent or making a false statement to avoid,  decrease or conceal  an obligation to pay  money
to the  federal government. In addition, the government may  assert  that a claim including  items
and services resulting from a violation of the federal Anti-Kickback Statute constitutes a  false or
fraudulent claim for purposes of the False Claims  Act.  There is also a separate false claims
provision imposing criminal penalties.  Applicable regulations of  both the EMA  and EU  member
states also impose liability for failing  to  comply  with fraud and abuse  laws or  improperly using
information obtained in in the course of clinical trials with  the EMA or other regulatory
authorities;

(cid:129) The U.S. federal Health Insurance  Portability and Accountability  Act  of 1996 (‘‘HIPAA’’) which
imposes criminal and civil liability for executing a  scheme  to defraud any  healthcare benefit
program or making false statements relating to healthcare matters.  Similar to the  federal
Anti-Kickback Statute, a person or entity  does not need to have actual knowledge of  the statute
to defraud any healthcare benefit program  or specific  intent to violate it in order to have
committed a violation. This statute also may impose monetary  penalties on any offers  or
transfers of remuneration to Medicare or Medicaid  beneficiaries (patients) which is likely  to
influence the beneficiary’s selection of particular supplier of government payable items.  Similarly,
the collection and use of personal health data in  the EU is  governed  by the EU General Data
Protection Regulation (the ‘‘GDPR’’), with many requirements  mandated by the GDPR  for the
consent of the individuals to whom the personal data relates,  the  information  provided to the
individuals, transfer of personal data within and outside  of  the EU and the security and
confidentiality of the personal data. Enforcement of the  GDPR is scheduled to begin on
May 25, 2018, and failure to comply with the  requirements of the  GDPR may  result in
substantial fines and other administrative penalties.  The GDPR increases our responsibility and
liability in relation to personal data that we process  and  we may  be  required to put in place
additional mechanisms ensuring compliance  with the GDPR. This may be onerous  and adversely
affect our business, financial condition, results of operations and prospects;

(cid:129) HIPAA, as amended by the Health  Information Technology  for Economic and  Clinical  Health

Act of 2009, and its implementing regulations, which  also imposes obligations  on certain covered
entity healthcare providers, health plans, and healthcare  clearinghouses as well  as their business
associates that perform certain services involving  the use  or disclosure of individually identifiable

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health information, including mandatory contractual  terms, with  respect  to safeguarding the
privacy, security and transmission of individually identifiable  health  information;

(cid:129) U.S. federal laws requiring drug manufacturers to report  annually  information  related to certain
payments and other transfers of value  made to physicians (defined to include doctors,  dentists,
optometrists, podiatrists and chiropractors) and  teaching hospitals,  as well as ownership or
investment interests held by physicians and their immediate family members, including under  the
federal Open Payments program, commonly known as the Sunshine Act, as well as  other  state
and foreign laws regulating marketing activities and requiring manufacturers to report  marketing
expenditures, payments and other transfers of value to physicians and other healthcare providers.
Similarly, payments made to physicians in certain  EU member states must  be  publicly disclosed.
Moreover, agreements with physicians often must be the subject of prior notification and
approval by the physician’s employer,  his or her competent  professional organization and/or  the
regulatory authorities of the individual EU  member  states. These requirements are provided in
the national laws, industry codes or professional codes of conduct, applicable in the  EU member
states. In addition, the provision of benefits or advantages to physicians to induce  or encourage
the prescription, recommendation, endorsement, purchase, supply, order or  use of medicinal
products is prohibited in the EU. Failure to comply with these requirements  could  result in
reputational risk, public reprimands, administrative penalties, fines or imprisonment.

(cid:129) U.S. federal government price reporting  laws, which require us  to  calculate  and report  complex

pricing metrics to government programs, where such reported  prices may be used in the
calculation of reimbursement and/or discounts on our marketed drugs. Participation in  these
programs and compliance with the applicable  requirements may subject us to potentially
significant discounts on our products, increased infrastructure costs,  potential liability for  the
failure to report such prices in an accurate and timely manner, and  potentially limit our ability
to offer certain marketplace discounts;

(cid:129) US Foreign Corrupt Practices Act,  which prohibit us  and third parties  working on our  behalf

from making payments to foreign government officials to assist in  obtaining  or retaining
business. Specifically, the anti-bribery  provisions  of  the FCPA  prohibit  the willful use of  the
mails or any means of instrumentality of interstate  commerce corruptly  in furtherance of any
offer, payment, promise to pay, or authorization of the payment of money or anything  of  value
to any  person, while knowing that all or a portion  of such money  or  thing of  value will be
offered, given or promised, directly or indirectly, to a foreign  official to influence the  foreign
official in his or her official capacity,  induce the foreign  official to do  or omit to do  an act in
violation of his or her lawful duty, or  to  secure any improper advantage in  order  to  assist  in
obtaining or retaining business for or with,  or directing business  to,  any person; and

(cid:129) state and foreign equivalents of each  of  the above laws, including  foreign anti-bribery and
corruption laws and state anti-kickback and false claims  laws,  which may apply to sales or
marketing arrangements and claims involving  healthcare items or services reimbursed by
non-governmental payors, including private insurers;  state laws which require pharmaceutical
companies to comply with the pharmaceutical industry’s voluntary  compliance guidelines and the
relevant compliance guidance promulgated by the federal government or  otherwise restricting
payments that may be made to healthcare providers; and state and  foreign  laws  governing the
privacy  and security of health information in certain  circumstances, many of which  differ  from
each  other in significant ways and often  are not preempted  by HIPAA, thus  complicating
compliance efforts.

While we do not submit claims and our customers will make the ultimate  decision on how to
submit claims, we may provide reimbursement guidance and support regarding migalastat HCl, and our
product  candidates for which we receive regulatory approval, to our  customers and patients. If  a

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government authority were to conclude that we provided improper advice  to  our customers and
patients and/or encouraged the submission of  false claims for reimbursement, we  could  face action  by
government authorities. Similarly, if a government  authority were  to  conclude  that  our patient support
efforts or interactions with charitable  foundations were  improper,  we could face action by government
authorities. Efforts to ensure that our business arrangements with  third parties will  comply with
applicable healthcare laws and regulations  will involve substantial costs. Nonetheless, it is  possible that
governmental authorities will conclude  that our business practices may not comply  with current  or
future statutes, regulations or case law  involving applicable fraud and abuse or other healthcare  laws
and regulations. If our operations are found to be in  violation of  any of these laws or any other
governmental regulations that may apply  to  us, we may  be subject  to  significant civil,  criminal and
administrative penalties, damages, fines, imprisonment, exclusion  from  participation in government
funded healthcare  programs, such as Medicare  and  Medicaid, and  the  curtailment or restructuring  of
our  operations.

Recently enacted and future legislation may increase the difficulty and cost for us to  obtain marketing
approval of and commercialize our product  candidates and affect the prices  we may  obtain.

In the United States and some foreign jurisdictions, there have  been a  number of legislative and
regulatory changes and proposed changes regarding the healthcare  system that could prevent or  delay
marketing approval of migalastat HCl  or any of our  product candidates, restrict or regulate
post-approval activities and affect our ability to profitably sell any product candidates,  including
migalastat HCl, for which we obtain  marketing approval.

In the United States, the Medicare Prescription  Drug,  Improvement,  and  Modernization Act of

2003, or Medicare Modernization Act, changed the way Medicare  covers  and pays for  pharmaceutical
products. The legislation expanded Medicare coverage  for  drug purchases  by  the elderly  and introduced
a new reimbursement methodology based  on average sales prices for physician  administered drugs.  In
addition, this legislation provided authority for limiting the  number of drugs that will  be  covered in  any
therapeutic class. Cost reduction initiatives and  other provisions of this legislation could decrease the
coverage and price that we receive for  any approved  products. While the Medicare Modernization  Act
applies only to drug benefits for Medicare  beneficiaries, private payors  often follow Medicare coverage
policy and payment limitations in setting  their own reimbursement rates.  Therefore, any reduction in
reimbursement that results from the  Medicare Modernization  Act may  result in  a similar reduction in
payments from private payors.

The pricing of pharmaceutical products, in  general,  and specialty drugs, in particular, has also been

a topic of concern in the U.S. government, including  by  the current administration. There  can be no
assurance as to how this scrutiny on pricing  of  pharmaceutical products will impact future pricing  of
our  products or orphan drugs or pharmaceutical  products generally.

In March 2010, President Obama signed into law the Patient  Protection and  Affordable Care  Act,
as amended by the Health Care and Education Reconciliation Act, or collectively, the Affordable  Care
Act, a  sweeping law intended to broaden  access to health insurance,  reduce or constrain the  growth of
healthcare spending, enhance remedies against fraud and abuse, add new transparency  requirements for
health care and health insurance industries, impose new taxes and fees on  the health industry and
impose additional health policy reforms. Effective  October 1, 2010, the Affordable  Care  Act revised the
definition of ‘‘average manufacturer price’’ for reporting  purposes, which  could  increase the amount of
Medicaid drug rebates to states. Further,  the  new law imposes  a  significant annual fee on  companies
that manufacture or import branded  prescription  drug products. A significant  number of  provisions are
not yet, or have only recently become,  effective, but  the Affordable Care Act is  likely to continue the
downward pressure on pharmaceutical  pricing,  especially under  the Medicare  program, and may also
increase our regulatory burdens and  operating costs. We expect that the Affordable  Care  Act, as  well

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as other healthcare reform measures that  have been and may be adopted in  the future, may  result in
more rigorous coverage criteria, new  payment methodologies and in  additional downward pressure on
the price that we receive for any approved product, and could seriously harm our future revenues.  Any
reduction in reimbursement from Medicare or other government  programs  may result in a similar
reduction in payments from private payors.  The implementation  of cost containment measures or other
healthcare reforms may compromise  our  ability to generate revenue,  attain  profitability or
commercialize our products. Finally,  there  have been significant efforts  to  modify or eliminate the
ACA. For example, the Tax Cuts and  Jobs Act enacted on December 22,  2017 repealed the shared
responsibility payment for individuals  who fail to maintain minimum essential coverage under
section 5000A of the Internal Revenue  Code, commonly referred to as  the individual mandate,
beginning in 2019. The Joint Committee on  Taxation estimates  that the repeal will result  in over
13 million Americans losing their health  insurance coverage over  the  next ten years and is  likely to lead
to increases in insurance premiums. Further legislative changes  to  and regulatory changes under  the
ACA remain  possible. It is unknown what  form any such  changes  or any law proposed  to  replace the
ACA would take, and how or whether  it may affect our  business  in the future.

In August 2017, President Trump signed into law the  Food &  Drug  Administration Reauthorization

Act (FDARA). This legislation imposes  significant new  requirements for clinical trial sponsors which
will affect, among other things, obtaining orphan drug designation, and the development  of drugs and
biological products for pediatric use. Migalastat HCl and ATB200/AT2221 have obtained orphan drug
designations from the FDA, but this legislation may result  in new  regulations  which might materially
impact our business.

Legislative and regulatory proposals  have  been made to expand post-approval requirements  and

restrict sales and promotional activities for pharmaceutical products. We cannot be sure  whether
additional legislative changes will be enacted, or whether  the FDA  regulations, guidance  or
interpretations will be changed, or what the impact of such  changes  on  the marketing  approvals of our
product  candidates, if any, may be. In  addition, increased scrutiny by the U.S. Congress  of the FDA’s
approval process may significantly delay  or prevent marketing approval, as well  as subject us  to  more
stringent product labeling and post-marketing testing  and  other requirements.

In the EU, similar political, economic and regulatory developments may  affect our ability to

profitably commercialize our products. In  addition to continuing pressure on prices and cost
containment measures, legislative developments at  the EU or member state level  may result in
significant additional requirements or  obstacles that may increase our  operating costs.

The FDA and other regulatory agencies actively enforce the laws  and  regulations prohibiting  the promotion
of off-label uses. If we are found to have  promoted off-label uses, we may become subject to significant
liability.

The FDA and other regulatory agencies  strictly regulate the promotional  claims that may  be  made

about prescription  drug products. In  particular,  a product may  not  be  promoted in the United  States
for uses that are not approved by the FDA as reflected in the product’s approved  labeling. In
particular, any labeling approved by  the FDA  for migalastat HCl or any  of our other product
candidates may include restrictions on use.  The  FDA may impose further requirements  or restrictions
on the distribution or use of migalastat HCl  or any of our  other product  candidates as part of a  REMS
plan.  If we receive marketing approval  for migalastat HCl or any other product candidates, physicians
may nevertheless prescribe such products  to  their patients  in a manner that  is inconsistent  with the
approved label. If we are found to have promoted such off-label uses, we may  become subject  to
significant liability. The federal government has  levied large civil  and criminal fines and / or  other
penalties against companies for alleged improper promotion and  has investigated and / or  prosecuted
several companies in relation to off-label  promotion. The FDA  has also  requested  that  certain

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companies enter into consent decrees  or permanent  injunctions under which specified promotional
conduct is changed, curtailed or prohibited.

Product liability lawsuits against us could  cause us to  incur substantial liabilities  and to limit
commercialization of any products that we  may  develop.

We  face an inherent risk of product liability exposure related to the testing  of  our  product
candidates in human clinical trials and  will  face an even greater  risk  when we commercially  sell any
products that we develop, including those  which may arise  from  misuse or malfunction of, or design
flaws in, such products, whether or not such problems  directly relate  to  the products and  services we
have provided. 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:

(cid:129) reduced resources of our management to pursue  our  business  strategy;

(cid:129) decreased demand for any product candidates or products that  we may develop;

(cid:129) injury to our reputation and significant negative media  attention;

(cid:129) regulatory investigations, prosecutions or enforcement actions  that could require  costly  recalls or

product modifications

(cid:129) withdrawal of clinical trial participants;

(cid:129) significant costs to defend the related  litigation;

(cid:129) increased insurance costs, or an inability  to  maintain  appropriate insurance coverage;

(cid:129) substantial monetary awards to trial participants or patients, including awards that substantially
exceed our product liability insurance,  which we  would then be required to pay from  other
sources, if available, and would damage our ability to obtain liability insurance  at reasonable
costs, or at all, in the future;

(cid:129) loss of revenue; and

(cid:129) the inability to commercialize any  products that we  may develop.

The amount of insurance that we currently hold may  not  be  adequate to cover all liabilities that

we may incur. We have increased our  insurance coverage for the commercialization of migalastat HCl
and may increase insurance coverage when,  and if, we begin commercializing any  other product
candidate that receives marketing approval. 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. On occasion,  large judgments  have been  awarded in lawsuits based on drugs
that had unanticipated side effects. A successful product liability claim or a  series of claims brought
against us could cause our stock price  to  fall and, if judgments  exceed  our  insurance coverage, could
decrease our available cash and adversely  affect our business.

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If the FDA or other applicable regulatory  authorities  approve  generic or  biosimiliar products  with claims
that compete with our product or any of our product candidates,  it could reduce our sales of our product or
those product candidates.

In the United States, after an NDA is approved, the product covered thereby becomes a ‘‘listed
drug’’ which can, in turn, be cited by  potential competitors in support of approval of an abbreviated
NDA,  or ANDA. The Federal Food,  Drug,  and  Cosmetic Act, or the FD&C Act, FDA regulations and
other applicable regulations and policies provide incentives to manufacturers to create  modified,
non-infringing versions of a drug to facilitate the approval  of  an ANDA or other  application  for generic
substitutes. These manufacturers might only be required to conduct a relatively inexpensive  study to
show that their product has the same active ingredients, dosage  form,  strength, route of administration,
and conditions of use, or product labeling, as our product or product candidate and that the generic
product  is absorbed in the body at the same  rate and to the  same extent as,  or is bioequivalent to, our
product  or product candidate. These  generic equivalents would be significantly less costly  than ours to
bring to market and companies that produce generic equivalents are generally  able to offer their
products at lower prices. Thus, after the introduction  of a generic competitor,  a significant  percentage
of the sales of any branded product are typically  lost  to  the generic product. Accordingly, competition
from generic equivalents to our product  or product  candidates would substantially limit  our ability  to
generate revenues and therefore to obtain  a return on the investments we have made in  our product or
product  candidates.

The Biologics Price Competition and Innovation Act,  or BPCIA, was  enacted as part of the Patient

Protection and Affordable Care Act  of  2010, or the  ACA, Pub. L. No. 111-148 (2010).  The  BPCIA
authorizes the FDA to approve ‘‘abbreviated’’ BLAs  for products whose sponsors demonstrate they are
‘‘biosimilar’’ to reference products previously  approved under BLAs. The FDA may also separately
determine whether ‘‘biosimilar’’ products are ‘‘interchangeable’’ with  their reference products.  However,
the FDA may not  approve an ‘‘abbreviated’’ BLA for a biosimilar  product until  at least twelve years
after the date on which the BLA for  the reference  product was approved. FDA approval could be
further delayed if the reference products  are subject to unexpired and  otherwise valid  patents.

Prior to the enactment of the BPCIA,  information in approved BLAs could not be relied upon by

other manufacturers to establish the  safety and efficacy  of their  products for which they  were seeking
FDA approval. Accordingly, if our products are approved under  a  BLA, other manufacturers
potentially could develop and seek FDA  approval of ‘‘biosimilar’’ products  at some point  in the future.

Risks Related to Our Financial Position  and Need  for Additional  Capital

We have  incurred significant losses since  our inception and  anticipate that  we will continue to incur  losses
in  the future.

We  are an early commercial-stage pharmaceutical company. To date, we have  focused on
developing our first product, migalastat HCl.  Investment in  pharmaceutical  product development  is
highly speculative because it entails substantial upfront capital expenditures and significant risk  that  a
product  candidate will fail to gain regulatory approval or become  commercially viable. Since our
inception we have only generated limited revenue from  product sales.  Although  the European
Commission has granted full approval  for the  oral small molecule pharmacological chaperone
migalastat HCl as a first-line therapy  for long-term  treatment of adults and adolescents aged 16  years
and older with a confirmed diagnosis  of Fabry disease (alpha-galactosidase A  deficiency) and  who have
an amenable mutation, neither the FDA nor  Japan has granted regulatory approval  to  any of  our
product  candidates, and we continue to incur  significant research,  development, commercialization and
other expenses related to our ongoing  operations. As  a result,  we are  not  profitable  and have  incurred
losses in each period since our inception. For the year ended  December  31, 2017, we have a net  loss of
$284.0 million, and we have an accumulated deficit of $1.1 billion  at December 31, 2017.

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We  expect to continue to incur losses  for the foreseeable future,  and  we expect these  losses to

increase as we:

(cid:129) continue our development and commercialization  of, and seek regulatory  approvals for, our
product and product candidates in the  United States, the  European Union, Japan and  other
foreign countries, as applicable;

(cid:129) conduct additional clinical trials and/or  further analysis of pre-existing clinical data to support

the approval of migalastat HCl in the United States or any post-approval commitments or  trials,
should it be approved;

(cid:129) continue communicating with the EMA, as necessary, regarding post-marketing requirements

and clinical trials for migalastat HCl;

(cid:129) continue to or initiate the regulatory submission process for marketing approval of migalastat

HCl outside of the United States and EU,  as applicable; 

(cid:129) build our commercial infrastructure so  that  it  is capable of  supporting product  sales, marketing

and distribution of migalastat HCl in  the EU, Japan and the US or other  territories in which we
may receive regulatory approval;

(cid:129) continue wind-down of our Phase 3 clinical trial of  SD-101 for  the  treatment of epidermolysis

bullosa, or EB

(cid:129) continue our preclinical studies and  clinical trials on  the use  of  pharmacological chaperones

co-formulated or co-administered with enzyme replacement therapy,  or ERT, for  Fabry, Pompe,
and other lysosomal storage disorders, or LSDs; and

(cid:129) continue our preclinical studies of  and potentially conduct clinical studies  of CDKL5.

We  may encounter unforeseen expenses,  difficulties, complications, delays, and  other unknown
factors that may adversely affect our  business. The size of our future  losses will depend, in part, on  the
rate of future growth of our expenses  and  our ability  to  generate revenues. If  any of  our product
candidates fails in clinical trials or does not gain  regulatory approval, or if approved, fails  to  achieve
market acceptance, we may never become profitable. Even if  we achieve profitability in the future, we
may not be able to sustain profitability in  subsequent periods. Our prior losses  and expected future
losses have had and will continue to have  an adverse effect  on our stockholders’ equity and working
capital.

We currently generate limited revenue from the sale  of  products and may never become  profitable.

We  began the commercial launch of  our  first product, migalastat  HCl, in May 2016. Accordingly,
we have only generated limited revenue  from product  sales.  Our ability to generate material revenue
and become profitable depends upon  our  ability to successfully commercialize our  existing product and
product  candidates, or product candidates  that we may in-license or acquire in  the future. Even if  we
are able to successfully achieve regulatory approval for our product candidates, we  do not know when
any of these product candidates will generate revenue for us, if at all  and  we may not meet  our  current
revenue guidance.  Our ability to generate revenue from our current or future product  and product
candidates depends on a number of factors,  including our ability  to:

(cid:129) successfully complete development activities and obtain additional  regulatory  and pricing and

reimbursement approvals for, and successfully commercialize, migalastat HCl; 

(cid:129) develop a commercial organization  capable of sales, marketing, and distribution for migalastat
HCl and any product candidates we intend  to  market,  if we receive regulatory approval,  in the
countries where we have chosen to commercialize the product candidates ourselves  including the
US and Japan;

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(cid:129) manufacture commercial quantities of  our  products at acceptable cost levels;

(cid:129) obtaining a commercially viable price for our products;

(cid:129) obtain coverage and adequate reimbursement from  third-parties, including government payors;

(cid:129) successfully satisfy post-marketing requirements that the FDA, EMA,  or other foreign regulatory

authorities may impose if migalastat HCl  or any of our  other product  candidates receive
regulatory approval, including pediatric  trials and patient  registries;

(cid:129) successfully complete development activities, including the necessary  preclinical  studies and

clinical trials, with respect to product candidates,  including ATB200/ATB2221;

(cid:129) complete and submit regulatory submissions to the  FDA  and obtain  regulatory approval  for our

product candidates including migalastat  HCl  and  ATB200/AT2221;  and 

(cid:129) complete and submit applications to,  and  obtain  regulatory approval from, foreign regulatory

authorities.

In addition, because of the numerous risks and uncertainties associated with product development,
including that our product candidates may  not  advance  through development or  achieve  the safety and
efficacy endpoints of applicable clinical trials, we are unable to predict the  timing or amount of
increased expenses, or when or if we  will  be able to achieve or  maintain  profitability. Furthermore,  we
anticipate incurring significant costs associated with commercializing these  products.

Even if we are able to generate revenues from the sale of our products,  we may  not  become
profitable and may need to obtain additional funding to continue operations. If we fail to become
profitable or are unable to sustain profitability on  a continuing basis, then we may  be  unable to
continue our operations at planned levels  and be forced to reduce  our operations.

If we require substantial additional capital to fund our operations and  we fail to obtain necessary
financing, we may be unable to complete the  development  and  commercialization  of  our product and
development and commercialization of our product candidates.

Our operations have consumed substantial amounts  of cash.  We expect to continue  to  spend
substantial amounts to advance the clinical  development of our product candidates, and launch and
commercialize our product and product candidates for which we may  receive regulatory  approval,
including continuing to build our own commercial  organization. We believe that our  current cash
position, including proceeds from the  recent equity  offering  and  expected Galafold revenues, is
sufficient to fund ongoing Fabry and  Pompe  program  operations  into at least 2021.  Potential  future
business development collaborations,  pipeline expansion, and investment in biologics manufacturing
capabilities could impact our future capital  requirements. However, we may require substantial
additional capital for the development and  commercialization of  our product and  further development
and commercialization of our product candidates.

We  cannot be certain that additional  funding will be available  on acceptable terms, or  at all. If  we
are unable to raise additional capital in sufficient amounts,  when  required or  on acceptable terms, we
could also be required to:

(cid:129) significantly delay, scale back, or discontinue the development  or the commercialization  of our

product or product candidates or one or more of our  other research and development initiatives;

(cid:129) seek collaborators for migalastat HCl or one or more of our current  or future  product

candidates at an earlier stage than otherwise would be desirable, or on terms  that  are less
favorable than might otherwise be available;

(cid:129) relinquish or license on unfavorable terms our rights  to  our  technologies, product or product

candidates that we otherwise would seek to develop or commercialize  ourselves; or

(cid:129) significantly curtail operations.

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Our forecast of the period of time through which  our financial resources  will  be  adequate to
support our operations is a forward-looking statement and involves risks and uncertainties,  and actual
results could vary as a result of a number  of  factors, including the factors discussed elsewhere in this
‘‘Risk Factors’’ section. We have based this  estimate on assumptions that may prove to be wrong, and
we could utilize our available capital  resources sooner than we currently expect. Our future funding
requirements, both near and long-term,  will depend on many factors, including, but not limited  to:

(cid:129) the costs of commercialization activities,  including establishing sales, marketing, and distribution
capabilities for migalastat HCl and any product candidates for which we may  receive regulatory
approval in regions where we choose to commercialize our products on our own;

(cid:129) the scope, progress, results, and costs of preclinical development, laboratory testing,  and clinical
trials for our product candidates and  any other product candidates  that we may  in-license or
acquire;

(cid:129) the cost of manufacturing drug supply for our  preclinical studies  and clinical trials, including the
significant cost of new Fabry ERT cell line development and manufacturing as  well as the  cost of
manufacturing ATB200, our Pompe ERT;

(cid:129) the outcome, timing, and cost of the regulatory approval process by the FDA, EMA,  PMDA and
other foreign regulatory authorities, including the potential  for regulatory authorities to require
that we perform more studies than those that  we currently anticipate for our product and
product candidates;

(cid:129) the cost of filing, prosecuting, defending, and enforcing  any patent  claims  and other  intellectual

property rights; 

(cid:129) the cost and timing of completion of existing or expanded commercial-scale outsourced

manufacturing activities; 

(cid:129) the cost of defending any claims asserted against us; 

(cid:129) the emergence of competing technologies and other  adverse  market  developments;

(cid:129) the extent to which we acquire or  invest in  additional businesses, products, and technologies; and

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

We  may seek additional capital through  a combination of private and  public  equity offerings, debt

financings, receivables or royalty financings,  strategic collaborations and  alliances, and licensing
arrangements. To the extent that we raise additional  capital through the sale of equity  or convertible
debt securities, your ownership interest  will be diluted, and  the terms may include liquidation or other
preferences that adversely affect the rights  of existing stockholders.  Debt, receivables, and royalty
financings may be coupled with an equity component, such as warrants to purchase stock, which could
also result in dilution of our existing stockholders’  ownership.  For example, stockholders may
experience dilution if the holders of the  convertible notes issued in connection with our private
placement in December 2016 have their convertible notes  converted to equity. The incurrence of
additional indebtedness beyond our existing indebtedness  with the  convertible note  holders could also
result in increased fixed payment obligations and could also result in certain  restrictive covenants, such
as limitations on our ability to incur  further  debt, limitations on  our ability to acquire or license
intellectual property rights, and other  operating  restrictions  that could have  a material adverse effect on
our  ability to conduct our business and  may result in liens being placed on our  assets and intellectual
property. If we were to default on any of  our indebtedness, we could lose such  assets and intellectual
property. If we raise additional funds  through  strategic collaborations and alliances and licensing
arrangements with third parties, we may have to relinquish valuable rights to migalastat HCl or our

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product  candidates, or grant licenses on terms that are not favorable to us. If we are unable  to  raise
additional funds through equity or debt  financing  when needed, we may be required  to  delay, limit,
reduce or terminate our product development or  commercialization efforts  or grant rights  to  develop
and market our technologies that we  would otherwise  prefer to develop and market ourselves.

Servicing our debt requires a significant amount of cash, and we may not have sufficient cash flow from
our business to pay our substantial debt.

On December 21, 2016, we issued $250 million  aggregate principal amount of 3.00%  unsecured

Convertible Senior Notes due 2023 (the  ‘‘Convertible Notes’’),  in a  private offering to qualified
institutional buyers pursuant to Rule 144A under the  Securities Act. The Notes bear  interest at a fixed
rate of 3.00% per year, payable semiannually  on June 15 and December 15 of  each  year,  beginning  on
June 15, 2017. The Notes will mature on  December 15,  2023, unless  earlier repurchased, redeemed, or
converted in accordance with their terms. The Notes are convertible at the option of the holders,  under
certain circumstances and during certain periods, into cash, shares of  the Company’s  common stock,
par value $0.01 per share (‘‘Common Stock’’), or a combination thereof and may be settled  as
described below.

There can be no assurance that our cash and cash equivalents, together  with funds generated by
our  operations and any future financings,  will be sufficient  to  satisfy our debt payment obligations or
that we will have sufficient equity to satisfy these obligations.  Our inability to generate funds or  obtain
financing sufficient to satisfy our debt  payment  obligations may result  in such obligations  being
accelerated by our lenders, which would  likely have a material adverse effect on our business, financial
condition and results of operations.

The conditional conversion feature of the Convertible Notes, if triggered, may adversely affect  our financial
condition and operating results.

In the event the conditional conversion  feature of the  Convertible Notes is  triggered, holders of
such notes will be entitled to convert  the  notes at any time during specified periods  at their option,
which  are set forth in the applicable indenture. If one or more holders elect  to  convert  their
Convertible Notes, we have the option  to  settle conversions entirely in  cash, in common stock or a
combination thereof. In addition, even if  holders do not elect to convert their Convertible  Notes, we
could be required under applicable accounting rules to reclassify all or a portion of the outstanding
principal of the notes as a current rather than  long-term liability, which  would result in a material
reduction of our net working capital.

We have  a limited operating history, which  may  make it difficult  for you  to evaluate the  success of our
business to date and to assess our future  viability.

We  commenced operations in February 2002.  Our  operations  to  date have been limited to
organizing and staffing our company,  acquiring and developing our technology  and undertaking
preclinical studies and clinical trials of  our most advanced product candidates,  including our first
product,  migalastat HCl. We have not yet  generated any material commercial sales for any  of our
product  candidates. We have not yet demonstrated our ability to obtain global  regulatory approvals
(including the US), manufacture a commercial scale  biologic product,  or arrange for  a third  party to  do
so on our behalf, or conduct sales and marketing activities  necessary for successful product
commercialization. Consequently, any predictions about  our future success or viability  may not be as
accurate as they could be if we had a  longer operating history. In addition, because we were  successful
in obtaining from the European Union full approval for migalastat HCl,  we will need to continue the
transition from a company with a research focus to a company capable of supporting  commercial
activities. We are currently in the early  stages of  the commercial launch of GALAFOLD  in the

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European Union. We have not demonstrated an ability to commercialize a product  successfully  and
may not be successful in such a transition.

We may  acquire other assets or businesses,  or form  collaborations or make investments  in other companies
or technologies that could harm our operating results, dilute  our stockholders’ ownership, increase our debt,
or cause us to incur significant expense.

As part of our business strategy, we may  continue to pursue acquisitions or licenses  of assets or
businesses, or strategic alliances and  collaborations, to expand our existing technologies and operations.
We  may not identify or complete these transactions in a timely manner, on a  cost-effective  basis, or at
all, and we may not realize the anticipated benefits of  any such  transaction, any of which could have  a
detrimental effect on our financial condition, results of operations, and cash  flows. We  may not be able
to find suitable acquisition or licensing  candidates, and if we make any acquisitions, we may not be able
to integrate these acquisitions successfully  into our existing  business  and  we may incur additional debt
or assume unknown or contingent liabilities in connection  therewith. Integration of an acquired
company or assets may also disrupt ongoing operations, require  the hiring of additional personnel  and
the implementation of additional internal systems and infrastructure, especially  the acquisition of
commercial assets, and require management resources that would otherwise focus on developing our
existing business. We may not be able  to  find suitable collaboration  partners  or identify  other
investment opportunities, and we may  experience losses related to any such investments.

To finance any acquisitions, licenses or collaborations, we may choose to issue debt  or shares  of
our  common stock as consideration.  Any  such issuance of shares would  dilute  the ownership of our
stockholders. If the price of our common  stock is  low or volatile, we may not be able to acquire other
assets or companies or fund a transaction using our stock as consideration. Alternatively, it may be
necessary for us to raise additional funds for acquisitions through public or private financings.
Additional funds may not be available  on  terms that are  favorable  to  us, or at  all.

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

As of December 31, 2017, the Company had federal, state, and foreign net operating loss  carry
forwards (‘‘NOLs’’) of approximately  $777.6 million, $781.8 million,  and $47.1 million  respectively. The
federal carry forward will expire in 2030 through 2037.  Most of the state carry forwards generated prior
to 2009 have expired through 2016. The remaining state carry  forwards  including those generated in
2009 through 2017 will expire in 2030  through 2037. The foreign NOLs  have indefinite expiration.
Utilization of NOLs may be subject to  a  substantial  limitation pursuant  to  Section 382 of the  Code as
well as similar state statutes in the event  of an  ownership change. Such ownership changes have
occurred in the past, and could occur  again  in the future Under Section 382  of  the Internal Revenue
Code of 1986, as amended, or Section 382, if a  corporation undergoes an ‘‘ownership change,’’
generally defined as a greater than 50%  change  (by value)  in its equity ownership over  a three-year
period, the corporation’s ability to use its pre-change  NOLs and  other pre-change  tax attributes  (such
as research and development tax credits) to offset its post-change income may be limited. We  may
experience ownership changes in the future  as a result  of shifts in our stock ownership some  of which
are outside our control. We completed  a detailed study  of  our  NOLs and determined that there was
not an ownership change in excess of  50%.  Ownership  changes  in future periods may place  additional
limits on our ability to utilize net operating loss  and tax credit carry forwards. In addition, at  the state
level,  there may be periods during which the  use of NOLs is suspended or otherwise  limited, which
could accelerate or permanently increase  state taxes owed.

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Risks Related to our Intellectual Property

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 competitors could develop and  commercialize
technology and products similar or identical to ours, and  our ability to successfully commercialize our
technology and products may be adversely affected.

Our success depends in large part on our  ability to obtain and maintain patent protection  in the

United States and other countries with  respect  to  our proprietary technology and  products. We  seek  to
protect our proprietary position by filing patent applications in the United States and  in certain foreign
jurisdictions related to our novel technologies,  product and product  candidates that are  important  to
our  business. This process is expensive and time-consuming,  and  we may not be able to file and
prosecute all necessary or desirable patent  applications at a reasonable  cost or  in a timely manner. It  is
also possible that we will fail to identify patentable aspects of  our research and  development output
before it is too late to obtain patent protection. Moreover, if we license technology  or product
candidates from third parties in the future, these license  agreements may not permit us to control the
preparation, filing and prosecution of  patent applications, or to maintain  or enforce the patents,
covering this intellectual property. These agreements could also  give our licensors the  right to enforce
the licensed patents without our involvement,  or to decide not  to  enforce the patents at all. Therefore,
in these circumstances, these patents  and applications may not be prosecuted and  enforced in  a manner
consistent with the best interests of our  business.

The patent position of biotechnology and pharmaceutical  companies  generally is  highly uncertain,

involves complex legal and factual questions and has in recent years been  the subject of much litigation.
As a result, the issuance, scope, validity,  enforceability and commercial  value of our patent rights  are
highly uncertain. Our pending and future  patent applications  may  not  result in patents  being  issued
which  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 United States and other countries may  diminish the value of
our  patents or narrow the scope of our  patent protection.

The degree of future protection for our proprietary rights is uncertain, and we cannot  ensure that:

(cid:129) we or  our licensors were the first to make the inventions covered by each of our pending patent

applications; 

(cid:129) we or  our licensors were the first to file patent applications for  these inventions; 

(cid:129) others will not independently develop  similar or alternative  technologies or duplicate any of our

technologies; 

(cid:129) any patents issued to us or our licensors will provide a  basis for commercially  viable products,
will provide us with any competitive  advantages  or will not be challenged  by third  parties;

(cid:129) we will develop additional proprietary technologies that are patentable;

(cid:129) we will file patent applications for new proprietary technologies promptly or at all; 

(cid:129) our patents will not expire prior to  or shortly after  commencing commercialization  of  a product;

or 

(cid:129) the patents of others will not have a negative effect  on our ability  to  do business.

(cid:129) Patent authorities may identify deficiencies  in our patent applications and not grant our patents

In addition, we cannot be assured that any of our pending patent applications will result in issued

patents. In particular, we have filed patent  applications  in the United States, the European Patent
Office and other countries outside the United States that have not been issued as  patents.  These

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pending applications include, among others, patent applications for ATB200 and some of the patent
applications we license pursuant to a license agreement  with Mount Sinai School  of  Medicine of New
York University. If patents are not issued in  respect of our pending patent applications, we  may not be
able to stop competitors from marketing  similar products  in Europe  and other countries in which we
do not have issued patents.

The patents that we have licensed from  Mt. Sinai School  of  Medicine relating to use  of  migalastat
HCl to treat Fabry disease expire in 2018  in the United  States and 2019 in Europe, Japan, and Canada.
In addition to patent protection outside of the United States, we intend  to seek  orphan medicinal
product  designation and to rely on statutory data exclusivity  provisions in  jurisdictions outside  the
United States where such protections are available, including Europe. The patent rights that we own or
have licensed relating to our product candidates are limited in ways that may affect our ability to
exclude third parties from competing against us  if we obtain regulatory approval  to  market these
product  candidates. In particular:

(cid:129) We do not hold  composition of matter patents covering migalastat  HCl and we have composition
of matter patent applications pending for ATB200.  There can  be  no assurance  that  the pending
applications will be approved or that  the scope of such patents, if they issue, will  be  sufficient to
protect our product. Composition of matter  patents can provide  protection for pharmaceutical
products to the extent that the specifically covered compositions are important. For our  product
candidates for which we do not hold composition of matter patents, competitors who  obtain  the
requisite regulatory approval can offer products with  the same composition as our products so
long as the competitors do not infringe any method of use  patents that we may  hold. 

(cid:129) For some of our product candidates, including ATB200, the principal patent protection that

covers or those we expect will cover, our product candidate  is a method of  use patent. This type
of patent only protects the product when used or sold for the specified  method. However, this
type of  patent does not limit a competitor from  making and marketing a  product that is identical
to our product that is labeled for an indication that is outside of the patented method, or  for
which  there is a substantial use in commerce outside the patented method.

Moreover, physicians may prescribe such  a competitive identical product  for indications other than

the one for which the product has been approved, or off-label indications, that are covered by the
applicable patents. Although such off-label prescriptions  may infringe or  induce infringement of method
of use patents, the practice is common  and  such infringement is  difficult to prevent or  prosecute.

The laws of foreign countries may not protect our rights to  the same extent  as the laws of the
United States. For example, European patent law restricts the  patentability  of  methods of treatment of
the human body more than U.S. law  does. In addition, we may not pursue or obtain patent protection
in all major markets. Assuming the other  requirements  for patentability are met,  currently, the  first  to
file a patent application is generally entitled to the  patent.  However,  prior to March 16,  2013, in the
United States, the first to invent was entitled to the  patent.  Publications  of  discoveries in the scientific
literature often lag behind the actual discoveries,  and  patent  applications  in the United States and
other jurisdictions are typically not published until  18 months after filing, or in some cases  not  at all.
Therefore, we cannot know with certainty  whether we  were  the first  to  make  the inventions claimed in
our  patents or pending patent applications, or that we were the first to file for patent protection of
such inventions.

Moreover, we may be subject to a third party preissuance submission of prior art  to  the U.S.
Patent and Trademark Office or become involved  in opposition,  derivation, reexamination, inter  partes
review, post grant review, interference proceedings or other patent  office proceedings or litigation, in
the United States or elsewhere, challenging  our patent  rights or  the patent rights of others.  An adverse
determination in any such submission, proceeding or litigation  could reduce the scope of, or  invalidate,
our  patent rights, allow third parties  to commercialize our  technology or  products and compete directly

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with us, without payment to us, or result  in our inability to manufacture or commercialize products
without infringing third party patent rights. In addition,  if the breadth or strength of protection
provided by our patents and patent applications is  threatened, it could dissuade  companies from
collaborating with us to license, develop  or commercialize  current or future product candidates.

Even if our patent applications issue as patents, they may not issue in a form that will  provide us
with any meaningful protection, prevent competitors  from competing  with us or  otherwise provide us
with any competitive advantage. 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. In
addition, other companies may attempt  to  circumvent  any  regulatory data protection or market
exclusivity that we obtain under applicable legislation,  which may  require  us to allocate significant
resources to preventing such circumvention. Legal and regulatory developments in the EU and
elsewhere may also result in clinical trial  data submitted as part of an MAA becoming publicly
available. Such developments could enable other companies to circumvent our intellectual property
rights and use our clinical trial data to obtain  marketing  authorizations in  the EU and in other
jurisdictions. Such developments may also require us to allocate  significant resources  to  prevent other
companies from circumventing or violating  our  intellectual property rights. Our  attempts  to  prevent
third parties from circumventing our  intellectual property and other rights may ultimately be
unsuccessful. We may also fail to take  the required actions or pay the necessary fees to maintain our
patents.

The issuance of a patent is not conclusive as to its inventorship,  scope,  validity or  enforceability,
and our owned and licensed patents  may be challenged in the  courts or patent  offices in  the United
States and abroad. Such challenges 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. 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 patent portfolio may not  provide us with  sufficient rights to exclude  others from
commercializing products similar or identical to ours.

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

Competitors may infringe our patents, trademarks,  copyrights or other intellectual  property. To

counter infringement or unauthorized use,  we may  be  required to file claims, which can be expensive
and time consuming. Any claims we  assert against  perceived infringers could provoke  these  parties to
assert counterclaims against us alleging that we  infringe  their intellectual  property.  In addition, in  a
patent infringement proceeding, a court  may decide  that a patent of ours is  invalid or unenforceable, in
whole or in part, construe the patent’s  claims  narrowly or may  refuse  to  stop the  other  party from using
the technology at issue on the grounds that our patents do not cover the technology in question.

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.

Our research, development and commercialization activities, as  well as  any  product candidates  or

products resulting from these activities,  may  infringe or be accused of infringing  one or more claims of
an issued patent or may fall within the  scope of one  or more claims in  a  published patent application
that may subsequently issue and to which  we do not hold a  license or  other  rights. Third parties may
own or control these patents or patent applications in the  United States and abroad.  These third
parties could bring claims against us  that would  cause us to incur substantial expenses and,  if  successful

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against us, could cause us to pay substantial damages. Further, if  a patent infringement suit were
brought against us, we or they could  be  forced  to  stop or  delay research, development,  manufacturing
or sales of the product or product candidate that is  the subject of the suit.

No assurance can be given that patents do not exist,  have not been  filed, or  could  not  be  filed or
issued, which contain claims covering  our  product candidates,  technology or methods. Because of the
number of patents issued and patent  applications filed in our field, we believe  there is a  risk that third
parties may allege they have patent rights encompassing our  product candidates,  technology or
methods.

We  are aware, for example, of U.S. patents, and corresponding  international counterparts,  owned
by third parties that contain claims related to treating protein misfolding. If any of these patents were
to be asserted against us, while we do  not  believe that our product candidates would  be  found to
infringe any valid claim of such patents,  there is no assurance  that a court  would find in our  favor or
that, if we choose or are required to seek a license with  respect  to  such patents, such license  would be
available to us on acceptable terms or at all.  If we were  to  challenge the validity of  any issued  U.S.
patent in court, we would need to overcome a presumption of  validity  that attaches to every patent.
This burden is high and would require us  to  present clear and convincing evidence as  to  the invalidity
of the patent’s claims. There is no assurance that  a court  would  find in  our  favor  on infringement  or
validity.

In order to avoid or settle potential claims  with respect to any  of  the patent rights described above
or any other patent rights of third parties, we  may choose  or be required to seek a license from a third
party and be required to pay license fees or royalties or both.  These licenses may not be available on
acceptable terms, or at all. Even if we or  our collaborators were able to obtain a license, the rights  may
be nonexclusive, which could result in our  competitors gaining  access  to  the  same intellectual  property.
Ultimately, we could be prevented from commercializing a product,  or be forced to cease some  aspect
of our business operations, if, as a result of actual  or threatened patent  infringement claims, we  are
unable to enter into licenses on acceptable terms. This could harm  our business significantly. Others
may sue us for infringing their patent  or other intellectual  property  rights or file  nullity, opposition or
interference proceedings against our  patents, even if such claims are without merit, which  would
similarly harm our business. Furthermore,  during  the course of litigation, confidential information  may
be disclosed in the form of documents or  testimony in connection with  discovery requests,  depositions
or trial testimony. Disclosure of our  confidential information and our involvement in intellectual
property litigation could materially adversely  affect our business.

There has been substantial litigation  and  other  proceedings  regarding patent and other intellectual

property rights in the pharmaceutical and biotechnology  industries.  In  addition to infringement claims
against us, we may become a party to other patent  litigation and other proceedings,  including
interference proceedings declared by the  U.S. Patent and  Trademark Office and  opposition proceedings
in the European Patent Office, regarding  intellectual property  rights with  respect to our products  and
technology. Even if we prevail, the cost to us of  any patent litigation  or other proceeding could be
substantial.

Some of  our competitors may be able to sustain the  costs of  complex patent litigation more
effectively than we can because they  have substantially greater resources. In addition, any uncertainties
resulting from any litigation could significantly  limit  our  ability to continue our operations. Patent
litigation and other proceedings may  also  absorb significant  management time.

We may  be subject to claims by third parties asserting that we or our employees have misappropriated  their
intellectual property, or claiming ownership of what we  regard  as our own intellectual property.

Many of our employees were previously employed at  universities or other biotechnology  or
pharmaceutical companies, including  our competitors  or potential competitors. Although we try to

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ensure that our employees do not use the proprietary  information  or know-how of others in  their work
for us, we may be subject to claims that we or these employees  have used or disclosed  intellectual
property, including trade secrets or other proprietary information, of any such  employee’s former
employer. Litigation may be necessary to defend  against these claims.

In addition, while we typically require our employees and contractors who may  be  involved in  the
development of intellectual property to execute agreements assigning such  intellectual property  to  us,
we may be unsuccessful in executing such an agreement with each party who  in fact  develops
intellectual property that we regard as  our own. Our and their assignment agreements may not be
self-executing or may be breached, and we may be forced to bring  claims against third parties,  or
defend  claims they may bring against us, to determine the  ownership of what we regard as our
intellectual property.

If we  fail in prosecuting or defending any such claims, in  addition to paying  monetary  damages, we

may lose valuable intellectual property rights or personnel. Even if  we are  successful in  prosecuting or
defending against such claims, litigation could result in substantial costs and be a distraction to
management.

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

Even if resolved in our favor, litigation or  other  legal proceedings relating to intellectual property

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

If we are unable to protect the confidentiality of our trade  secrets,  our business and competitive  position
would be harmed.

In addition to seeking patents for some of  our  technology and products,  we also  rely on trade
secrets, including unpatented know-how,  technology and other proprietary information, to maintain our
competitive position. We seek to protect these trade secrets,  in part, by  entering into non-disclosure
and confidentiality agreements with parties who have access  to  them, such as our employees, corporate
collaborators, outside scientific collaborators, contract  manufacturers,  consultants, advisors  and other
third parties. We also enter into confidentiality  and invention  or  patent assignment agreements with  our
employees and consultants. However, we cannot guarantee that we have executed these agreements
with each party that may have or have  had access  to  our trade secrets  or that the agreements  we have
executed will provide adequate protection.  Any party with whom  we have executed such an agreement
may breach that agreement and disclose our proprietary information,  including our trade secrets, and
we may not be able to obtain adequate  remedies  for such breaches.  Enforcing  a claim that a party
illegally disclosed or misappropriated  a trade secret  is difficult, expensive and time-consuming, and the
outcome is unpredictable. In addition, some courts  inside and  outside the United States  are less willing
or unwilling to protect 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 to whom
they communicate it, from using that technology or information to compete with us. If any of our trade

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secrets were to be obtained or independently developed  by  a competitor, our competitive position
would be harmed.

If we fail to comply with our obligations in our intellectual property  licenses with third parties,  we could
lose license rights that are important to  our business.

We  are a party to a license agreement with the Mount Sinai  School of Medicine of New York

University, pursuant to which we license  key  intellectual  property  relating to our lead product
candidates. We expect to enter into additional licenses in the future. Under our existing license, we
have the right to enforce the licensed  patent  rights. Our existing license imposes, and we expect  that
future licenses will impose, various diligences, milestone payment, royalty, insurance  and other
obligations on us. If we fail to comply with these obligations, the licensor may have the  right to
terminate the license, in which event  we might not be able to market any product that is covered  by  the
licensed patents.

We have  not yet registered our trademarks in all of our potential  markets,  and  failure to  secure those
registrations could adversely affect our  business.

Our trademark applications may not  be  allowed  for registration, and our  registered trademarks

may not be maintained or enforced. During trademark registration proceedings, we  may receive
rejections. Although we are given an opportunity to respond  to  those rejections, we  may be unable to
overcome such rejections. In addition, in the  U.S. Patent and Trademark Office  and in  comparable
agencies in many foreign jurisdictions,  third  parties are  given an opportunity to oppose pending
trademark applications and to seek to  cancel registered trademarks. Opposition or cancellation
proceedings may be filed against our trademarks, and  our  trademarks may not survive such
proceedings. If we do not secure registrations for our trademarks, we may encounter more  difficulty in
enforcing them against third parties than we otherwise would.

Obtaining and maintaining our patent  protection depends on compliance with  various procedural, document
submissions, fee payment and other requirements imposed by governmental  patent  agencies, and our patent
protection could be reduced or eliminated  for non-compliance  with these requirements.

The U.S. Patent and Trademark Office  and  various foreign governmental patent agencies require
compliance with a number of procedural, documentary,  fee  payment and other similar  provisions during
the patent application process. In addition,  periodic maintenance fees on issued patents are  required to
be paid to the U.S. Patent and Trademark Office and foreign patent agencies in  several stages over  the
lifetime of the patents. While an inadvertent lapse can in many cases be cured by payment of  a late fee
or by other means in accordance with  the applicable rules, there  are  situations in which noncompliance
can result in abandonment or lapse of the  patent  or patent application, resulting  in partial or  complete
loss of patent rights in the relevant jurisdiction. Non-compliance  events that could result  in
abandonment or lapse of a patent or patent application include, but are not  limited to, failure to
respond to official actions within prescribed  time limits,  non-payment of fees and failure to properly
legalize and submit formal documents.  If we fail  to  maintain  the patents and patent applications
covering our product candidates, our competitive  position would  be  adversely affected.

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Risks Related to our Dependence on Third Parties

Use of third parties to manufacture our  product or product candidates may increase the  risk that we  will
not  have sufficient quantities of our product or  product candidates or such quantities at an acceptable cost,
which could delay, prevent or impair our  development or commercialization efforts.

We  do not currently own or operate  manufacturing facilities for  clinical or commercial production

of our product or product candidates.  We  currently lack the  resources and  the capabilities to
manufacture ourselves any of our product  or product candidates on a clinical or commercial  scale.  If
we choose in the future to manufacture  ourselves,  we would face  all of the risks and  uncertainties of
third party manufacture of our products. We currently outsource all  manufacturing and packaging  of
our  product and preclinical and clinical product  candidates to third parties. The manufacture  of
pharmaceutical products requires significant expertise  and capital investment, including the
development of advanced manufacturing  techniques and process  controls. In particular, the
manufacture of our biologic product  candidates, including ATB200 for  Pompe, are highly  complex and
we may encounter difficulties in production, particularly in scaling up  to  commercial  production.  These
problems include difficulties with production costs and yields and quality control, including stability  of
the product or product candidate, and  demonstrating comparability of small batches to commercial
scale batches. The occurrence of any of  these problems could significantly delay our  clinical trials  or
the commercial availability of our products.

We  may be unable to enter into agreements  for commercial supply  with third party  manufacturers,

or may be unable to do so on acceptable terms. Even if we  enter into these agreements, the
manufacturers of each product candidate  will be single source  suppliers to us for  a significant  period of
time.

Even if we are able to establish and maintain arrangements with third party manufacturers,

reliance on third party manufacturers entails additional risks, including:

(cid:129) reliance on the third party for regulatory compliance and quality  assurance;

(cid:129) limitations on supply availability resulting from  capacity  and scheduling constraints of the  third

parties;

(cid:129) inability to demonstrate comparability to GMP commercial scale  product for biologic products;

(cid:129) inability to manufacture batches that meet specifications and quality standards;

(cid:129) impact on our reputation in the marketplace if  manufacturers of our  products,  once

commercialized, fail to meet the demands of our customers;

(cid:129) the possible breach of the manufacturing agreement by the  third  party;

(cid:129) the possible misappropriation of our proprietary information, including  our  trade secrets and

know-how; and

(cid:129) the possible termination or nonrenewal of the  agreement by  the third party at a time that is

costly or inconvenient for us.

The failure of any of our contract manufacturers  to  maintain  high manufacturing standards could
result in injury or death of clinical trial participants or patients using products. Such failure could also
result in product liability claims, product  recalls, product seizures  or  withdrawals, delays  or failures in
testing or delivery, cost overruns or other  problems  that could seriously  harm our business or
profitability.

The FDA and regulatory authorities in other  jurisdictions  require our contract  manufacturers  to
comply  with regulations setting forth  cGMP. These regulations cover  all aspects  of the manufacturing,
testing, quality control and recordkeeping relating to our product  candidates and any  products that we

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may commercialize. Our manufacturers  may not be able to comply with cGMP regulations or similar
regulatory requirements outside the United States.  Our failure or the  failure of our third party
manufacturers, to comply with applicable regulations could significantly and adversely affect regulatory
approval and supplies of our product  candidates.

Our product candidates and any products  that we may  develop may compete with other  product

candidates and products for access to  manufacturing facilities. There are a limited  number of
manufacturers that operate under cGMP  regulations  and  that might be capable of manufacturing our
products.

If the third parties that we engage to  manufacture product for  our preclinical tests and  clinical
trials should cease to continue to do  so  for any reason, we  likely would experience delays  in advancing
these trials while we identify and qualify  replacement suppliers  and we may be unable to obtain
replacement supplies on terms that are  favorable  to  us. In  addition, if  we are not able to obtain
adequate supplies  of our product candidates  or the drug substances used to manufacture them, it will
be more difficult for us to develop our product  candidates and compete effectively.

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

We rely on third parties to conduct certain  preclinical  development activities and our clinical  trials, and
those third parties may not perform satisfactorily, including failing to meet deadlines for  the completion of
such  trials.

We  do not independently conduct clinical trials for our product  candidates or certain preclinical
development activities of our product  candidates,  such as  long-term safety studies  in animals.  We rely
on third parties, such as CROs, clinical data  management organizations, medical  institutions and
clinical investigators, to perform these  functions. Any of these third parties may  terminate their
engagements with us at any time. If we need to enter  into alternative arrangements,  it would  delay our
product  development activities.

Our reliance on these third parties for preclinical  and  clinical  development  activities reduces our

control over these activities but does not relieve us of our responsibilities. For  example, we remain
responsible for ensuring that each of  our clinical trials is  conducted  in accordance with  the general
investigational plan and protocols for the trial.  Moreover,  the FDA  requires us to comply with
standards, commonly referred to as Good  Clinical Practices,  or GCP, for conducting,  recording and
reporting the results of clinical trials  to  assure that data and reported results are  credible and accurate
and that the rights, integrity and confidentiality of trial participants  are  protected.  We also are required
to register certain ongoing clinical trials  and post  the results  of  completed clinical trials on a
government-sponsored database, ClinicalTrials.gov,  within particular timeframes. Failure  to  do so  can
result in fines, adverse publicity and civil and criminal sanctions. Similar  GCP and transparency
requirements apply in the EU. Failure to comply with such requirements, including with respect  to
clinical trials conducted outside the EU  and  United States, can also lead  regulatory authorities to
refuse to take into account clinical trial  data submitted as part of an MAA.

Furthermore, third parties that we rely on for our  clinical development activities  may also have

relationships with other entities, some  of  which may be our competitors. If these third parties  do  not
successfully carry out their contractual duties, meet expected deadlines or conduct our clinical trials in
accordance with regulatory requirements or our stated protocols, we will not be able  to  obtain,  or may
be delayed in obtaining, marketing approvals for our product candidates and will  not  be  able to, or  may
be delayed in our efforts to, successfully  commercialize our product candidates. Our product
development costs will increase if we  experience  delays in  testing or obtaining  marketing  approvals.

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We  also rely on other third parties to store and distribute drug supplies  for our preclinical

development activities and clinical trials. Any performance failure on the  part of our distributors could
delay clinical development or marketing  approval of our product candidates or  commercialization of
our  products, producing additional losses  and depriving us of potential product revenue.

Extensions, delays, suspensions or terminations of our preclinical  development activities  or our
clinical trials as a result of the performance of our independent clinical investigators and  CROs will
delay, and make more costly, regulatory approval for any  product candidates that we may  develop.  Any
change in a CRO during an ongoing  preclinical development  activity or clinical trial could seriously
delay that trial and potentially compromise  the results of  the activity or  trial.

We may  not be successful in maintaining  or establishing  collaborations, which could adversely affect our
ability to develop and, particularly in international  markets, commercialize products.

We  are collaborating with physicians, patient advocacy  groups, foundations and  government
agencies in order to assist with the development of our products  and each  of our  product candidates.
We  plan to pursue similar activities in future programs and plan to evaluate the merits of retaining
commercialization rights for ourselves  or entering into selective collaboration arrangements  with leading
pharmaceutical or biotechnology companies. We also  may seek to establish collaborations  for the  sales,
marketing and distribution of our products.  If we  elect  to  seek collaborators in the  future but  are
unable to reach agreements with suitable collaborators, we  may fail to meet  our  business  objectives  for
the affected product or program. We  face,  and will continue  to  face, significant competition  in seeking
appropriate collaborators. Moreover, collaboration arrangements  are  complex and time consuming to
negotiate, document and implement. We may not be successful in  our efforts, if any,  to  establish and
implement collaborations or other alternative  arrangements. The terms  of any collaboration or other
arrangements that we establish, if any,  may not be favorable to us.

Any collaboration that we enter into may not be successful. The success  of  our collaboration
arrangements, if any, will depend heavily  on the efforts and activities of our collaborators. It is  likely
that any collaborators of ours will have  significant discretion in determining  the efforts and resources
that they will apply to these collaborations. The risks that we may be subject to in  possible  future
collaborations include the following:

(cid:129) collaborators have significant discretion in determining  the efforts and resources that they will

apply  to these collaborations;

(cid:129) collaborators may not pursue development and commercialization  of  our  product or  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 diverts resources  or  creates  competing priorities;

(cid:129) 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;

(cid:129) collaborators could independently develop, or  develop  with third parties,  products that compete
directly or indirectly with our products or product candidates  if 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;

(cid:129) a collaborator with marketing and distribution rights to one or more products may  not  commit

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

(cid:129) 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

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invalidate our intellectual property or proprietary information or expose  us to potential
litigation;

(cid:129) collaborators may infringe the intellectual property rights of third  parties, which  may expose us

to litigation and potential liability;

(cid:129) disputes may arise between the collaborator  and  us  as to the ownership of  intellectual property

arising during the collaboration;

(cid:129) we may grant exclusive rights to our collaborators, which would prevent us from collaborating

with others;

(cid:129) disputes may arise between the collaborators and us  that result in  the delay  or termination  of
the research, development or commercialization of our products or product candidates or  that
result in costly litigation or arbitration  that  diverts  management attention  and resources; and

(cid:129) collaborations may be terminated and, if  terminated, may  result  in a need  for additional capital

to pursue further development or commercialization of the applicable product candidates.

Collaboration agreements may not lead  to  development or  commercialization of product
candidates in the most efficient manner  or at  all.  If a  collaborator of  ours  were to be involved in a
business combination, the continued pursuit and emphasis on  our product development or
commercialization program could be delayed, diminished or terminated.

Collaborations with pharmaceutical companies and other third parties often are  terminated or

allowed to expire by the other party.  Such terminations or expirations may adversely  affect us
financially and could harm our business reputation  in the event  we elect to pursue  collaborations that
ultimately expire or are terminated.

Our initial co-formulated product candidate for Fabry  Disease utilized migalastat HCl
co-formulated with a proprietary human  recombinant alpha-Gal  A  enzyme. We plan  to  continue
development of a co-formulated ERT  with migalastat HCl with an internally developed Fabry  cell  line
as a next-generation ERT for Fabry disease.

The risks involved with developing our  own internal cell line are in  addition  to  the risks  described

above with respect to securing and using third  party manufacturers and  it  could  significantly  and
adversely affect the overall cost of developing  the co-formulated product candidate and significantly
increase the timelines for development.

Materials necessary to manufacture our  product or product candidates may not  be available on
commercially reasonable terms, or at all,  which may  delay the development and commercialization of our
product or product candidates.

We  currently rely on the manufacturers of our product and  product candidates  to  purchase  from
third party suppliers the materials necessary to produce the compounds for our preclinical  studies and
clinical trials, and we rely, or will rely,  on  these  other  manufacturers for  commercial distribution  of  our
product  and, if we obtain marketing approval, for any of our product  candidates. Suppliers may not sell
these materials to  our manufacturers  at the  time we need them or on  commercially reasonable terms
and all such prices are susceptible to fluctuations in price and availability  due  to  transportation costs,
government regulations, price controls  and  changes in economic  climate or other foreseen
circumstances. We do not have any control over  the process or timing of the acquisition of these
materials by our manufacturers. Moreover,  we currently do not have any  agreements for  the
commercial production of these materials.  If  our manufacturers are unable  to  obtain  these materials  for
our  preclinical studies and clinical trials,  product testing  and  potential regulatory approval  of  our
product  candidates would be delayed, significantly  impacting our  ability to  develop  and commercialize
our  product candidates. If our manufacturers or  we are  unable to purchase these materials for

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commercial distribution of our product  or, after  regulatory approval has been obtained, our product
candidates, the commercial launch of  our product  and product candidates would  be  delayed or  there
would be a shortage in supply, which would materially affect our ability  to generate revenues from the
sale of our product or product candidates.

Manufacturing issues may arise that could  increase  product and regulatory approval costs or delay
commercialization.

As we scale up manufacturing of our product and  product candidates and  conduct  required

stability and comparability testing, we  may  encounter  product, packaging, equipment and process-
related issues that may require refinement  or resolution in order to proceed with our planned clinical
trials and obtain regulatory approval  for  commercial marketing. In the future,  we may  identify
impurities, which could result in increased  scrutiny  by regulatory authorities,  delays in  our  clinical
programs and regulatory approval, increases in our operating expenses or  failure to obtain or maintain
approval for our product or product  candidates.

We  currently rely on WuXi App Tec Biopharmaceuticals,  a  company based  in the People’s
Republic of China, as the sole supplier of our  biologic product,  ATB200.  Accordingly, there is a risk
that supplies of our product may be significantly delayed by  or  may become  unavailable as  a result of
manufacturing, equipment, process, or business-related  issues affecting that company.  We may also  face
additional manufacturing and supply-chain risks due to the regulatory and political  structure of the
PRC, or as a result of the international relationship between the  PRC and the  United States or  any of
the other countries in which our products  are  marketed.

Our business activities involve the use of  hazardous materials, which  require compliance with
environmental and occupational safety laws regulating the  use of  such materials. If we violate these laws, we
could be subject to significant fines, liabilities or  other  adverse consequences.

Our research and development programs involve the  controlled  use of hazardous materials,

including microbial agents, corrosive, explosive and flammable chemicals and  other hazardous
compounds in addition to certain biological hazardous waste.  Ultimately, the activities  of  our  third
party product manufacturers when a  product candidate  reaches commercialization will also  require the
use of hazardous materials. Accordingly, we  are subject to federal, state and  local laws governing  the
use, handling and disposal of these materials. Although we believe that our safety procedures for
handling and disposing of these materials  comply in  all  material  respects with the standards prescribed
by local, state and federal regulations,  we  cannot completely eliminate the risk  of  accidental
contamination or injury from these materials. In addition, our collaborators may not comply with these
laws. In the event of an accident or failure to comply with environmental laws, we could be held liable
for damages that result, and any such liability could  exceed  our assets  and  resources or we  could  be
subject to limitations or stoppages related to our use of these  materials which  may lead to an
interruption of our business operations  or those of our third party contractors. While we  believe that
our  existing insurance coverage is generally  adequate for our normal handling of these hazardous
materials, it may not be sufficient to  cover pollution conditions  or  other  extraordinary or unanticipated
events. Furthermore, an accident could  damage or force us to shut  down  our operations. Changes  in
environmental laws may impose costly compliance requirements on us  or  otherwise subject  us  to  future
liabilities and additional laws relating  to  the management,  handling, generation, manufacture,
transportation, storage, use and disposal  of  materials used in or generated by the manufacture  of  our
products or related to our clinical trials. In addition, we  cannot predict the  effect  that  these  potential
requirements may have on us, our suppliers and contractors or our  customers.

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Risks Related to our Business, Employee Matters and Managing Growth

Our future success depends on our ability to retain our  Chief Executive  Officer  and other key executives
and to attract, retain and motivate qualified personnel.

We  are highly dependent on John F. Crowley,  our  Chairman  and  Chief  Executive Officer,

Bradley L. Campbell, our President and Chief Operating Officer, and William D. Baird, III, our Chief
Financial Officer. These executives each have  significant pharmaceutical  industry  experience.  The  loss
of the services of any of these executives might  impede the  achievement of our research, development
and commercialization objectives and  materially adversely  affect our business and we may  not  be  able
to replace these executives with candidates with similar background and experience in the event of the
loss of their services. We do not maintain ‘‘key person’’ insurance on  Mr.  Crowley or on any  of our
other executive officers.

Recruiting and retaining qualified scientific, clinical  and  sales and marketing personnel will also be

critical to our success. In addition, maintaining a qualified finance and legal  department is key to our
ability to meet our regulatory obligations as a  public company and  important in  any potential capital
raising activities. Our industry has experienced a high  rate  of turnover in recent years. We may not be
able to attract and retain these personnel  on  acceptable  terms given the  competition among numerous
pharmaceutical and biotechnology companies  for similar  personnel, particularly in New Jersey and
surrounding areas. Although we believe  we offer competitive  salaries and  benefits, we may have to
increase spending in order to retain personnel. If  we fail to retain our remaining  qualified personnel  or
replace them when they leave, we may  be  unable  to  recruit replacements nor  continue our development
and commercialization activities.

In addition, we rely on consultants and  advisors, including scientific and  clinical advisors,  to  assist
us in formulating our research and development and commercialization  strategy. Our consultants and
advisors may be employed by employers  other than us and  may have commitments under consulting or
advisory contracts with other entities that may  limit their availability to us.

We expect to expand our development, regulatory and sales and marketing capabilities, and as a result, we
may encounter difficulties in managing our growth, which could disrupt our  operations.

As of December 31, 2017, we had 325  full-time employees. As our development and

commercialization strategies develop, we  will  need additional managerial, operational, sales, marketing,
financial, technical operations and other  resources. Our management, personnel  and systems currently
in place may not be adequate to support  this  future growth. We  may not be able to effectively manage
the expansion of our operations, which may result in  weaknesses in  our infrastructure, give  rise to
operational mistakes, loss of business  opportunities, loss  of  employees and reduced productivity among
remaining employees. Future growth  could require significant capital expenditures and  may divert
financial resources from other projects, such as the development  of  our existing or  future product
candidates and we may not be able to  replace key personnel in the  event of turnover. Future  growth
would impose significant added responsibilities on members of management, including:

(cid:129) managing the commercialization of  migalastat  HCl and any product  candidates approved for

marketing;

(cid:129) overseeing our ongoing preclinical studies and clinical  trials effectively;

(cid:129) identifying, recruiting, maintaining,  motivating and integrating  additional employees, including
any sales and marketing personnel engaged  in connection with the commercialization  of  any
approved product;

(cid:129) managing our internal development efforts effectively while complying with  our contractual

obligations to licensors, licensees, contractors and other third parties;

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(cid:129) improving our managerial, development, operational and financial systems and procedures;

(cid:129) developing our compliance infrastructure and  processes to ensure compliance with regulations

applicable to public companies;

(cid:129) developing biologics manufacturing expertise; and

(cid:129) expanding our facilities.

As our operations expand, we will need to manage  additional relationships with various strategic

collaborators, suppliers and other third parties. Our  future financial performance and our ability to
commercialize our product candidates and to compete effectively will depend, in  part, on our ability to
manage any future growth effectively. To  that end, we must be able to manage  our  development efforts
and clinical trials effectively and hire, train and integrate additional management,  administrative and
sales and marketing personnel. We may  not  be  able  to  accomplish  these tasks, and our  failure to
accomplish any of them could prevent us  from successfully growing our company.

We could be negatively impacted by securities  class  action complaints.

Since October 1, 2015, three purported securities class action  lawsuits were  filed in  the United
States District Court for New Jersey,  naming  as defendants the Company, its Chairman  and Chief
Executive Officer, and in one of the  actions,  its Chief Medical Officer. The lawsuits alleged  violations
of the Securities Exchange Act of 1934  in  connection  with allegedly false and misleading statements
made by the Company related to the regulatory approval path for migalastat. The  plaintiffs  sought,
among other things, damages for purchasers of the  Company’s Common Stock during different periods,
all of which fall between March 19, 2015 and October 1, 2015. It  is possible that additional  suits will be
filed, or allegations received from stockholders, with  respect to similar  matters and also naming the
Company and/or its officers and directors as defendants. On May 26, 2016, the Court consolidated
these lawsuits into a single action entitled  In  re  Amicus Therapeutics,  Inc. Shareholder  Litigation
(C.A. # 3:15-cv-07350) and appointed  a lead plaintiff.  The  lead plaintiff filed  a Consolidated Amended
Class Action Complaint on July 11, 2016.  On August 25, 2016, the Company and other defendants  filed
a motion to dismiss in response to the Consolidated Amended Class  Action Complaint. This motion  to
dismiss was fully briefed on October  28, 2016. Before the motion was decided, the  lead plaintiff and
defendants entered into a Stipulation and Agreement  of Settlement  dated April 14,  2017 (the
‘‘Settlement’’). Thereafter, on June 29, 2017,  the Court entered an  order  granting preliminary approval
of the Settlement. On November 9, 2017,  the Court  conducted  a  fairness hearing and on November 15,
2017, entered an Order and Final Judgment  approving the  Settlement. Among  other  provisions, the
Settlement provides defendants with a release of  all  claims and  involves the creation of a  Settlement
Fund for class members in the amount of  $3.8 million.  The majority of the  amount  was covered under
insurance and any out of pocket expenses were immaterial to the Company’s  consolidated  financial
statements.

On or about March 3, 2016, a derivative lawsuit  was  filed by  an  Amicus  shareholder purportedly

on Amicus’ behalf in the Superior Court of New Jersey, Middlesex County, Chancery Division, against
various officers and directors of the Company. Amicus itself is named  as a  nominal defendant.  The
derivative lawsuit alleges similar facts and circumstances as the three purported  securities class action
lawsuits described above and further  alleges claims  for  breach  of state  law fiduciary  duties, waste of
corporate assets, unjust enrichment, abuse of control, and gross  mismanagement  based on  allegedly
false and misleading statements made by  Amicus related  to the regulatory approval path for migalastat
HCl. The plaintiff seeks, among other things, to require  the Amicus Board to take certain actions  to
reform its corporate governance procedures, including greater  shareholder input and  a provision  to
permit shareholders to nominate candidates for election to the  Board, along  with restitution, costs of
suit and attorney’s fees. On February  7, 2017, the  complaint  was  dismissed by the  Court without
prejudice.

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These lawsuits and any other related lawsuits are  subject to  inherent uncertainties and the actual

cost will depend upon many unknown  factors. The outcome of  any litigation  is necessarily uncertain
and we could be forced to expend significant resources in the defense of these lawsuits, and we  may
not prevail.

We may  be exposed to employment-related  claims and losses which  could have  an  adverse effect  on our
business.

As we continue to increase the size of our workforce, the risk of potential  employment-related
claims will also increase. As such, we  may be subject to claims,  allegations or legal proceedings  related
to employment matters including, but not limited to, discrimination, harassment (sexual or otherwise),
wrongful termination or retaliation, local,  state  or federal labor law violations, injury, and  wage
violations. In the event we are subject to one  or more employment-related claims, allegations or legal
proceedings, we may incur substantial  costs,  losses  or other liabilities  in the defense, investigation,
settlement or other disposition of such claims. In addition  to  the economic  impact,  we may also suffer
reputational harm as a result of such claims, allegations and  legal proceedings  and the  investigation,
defense and prosecution of such claims, allegations and legal  proceedings could cause substantial
disruption in our business and operations.  While we  do have policies and procedures in place to reduce
our  exposure to these risks, there can  be  no assurance that such policies and  procedures  will be
effective or that we will not be exposed to such claims, allegations  or  legal proceedings.

Our employees, independent contractors, principal investigators, CROs, consultants and  vendors may  engage
in  misconduct or other improper activities, including noncompliance  with regulatory standards  and
requirements, which could cause significant liability  for us  and harm  our reputation.

We  are exposed to the risk that our employees, independent contractors, principal investigators,

CROs, consultants and vendors may  engage in  fraudulent  conduct or other illegal activity.  Misconduct
by these parties could include intentional,  reckless and/or negligent conduct or disclosure of
unauthorized activities to us that violates:

(cid:129) FDA, DEA or similar regulations of  foreign regulatory  authorities, including  those laws
requiring the reporting of true, complete and accurate information to such authorities;

(cid:129) manufacturing standards;

(cid:129) federal and state healthcare fraud  and abuse laws and regulations,  anti-bribery and  corruption

laws, and similar laws and regulations established  and enforced by foreign regulatory authorities;
or

(cid:129) laws that require the reporting of financial information or data accurately.

In particular, sales, marketing and business arrangements in the healthcare industry are subject to

extensive laws and regulations intended  to  prevent fraud, kickbacks, self-dealing, bribery and  corruption
and other abusive practices. These laws  and  regulations may restrict  or prohibit a  wide range of pricing,
discounting, marketing and promotion,  sales commission, customer incentive  programs  and other
business arrangements. Activities subject to these  laws also involve the  improper  use of information
obtained in the course of clinical trials, which could result in regulatory sanctions and serious  harm to
our  reputation. We have adopted a Code  of  Business Conduct and Ethics, but it  is not always possible
to identify and deter misconduct by employees and other third parties, and the precautions we  take to
detect and prevent this activity may not be effective  in controlling unknown or unmanaged  risks or
losses or in protecting us from governmental investigations  or other  actions or lawsuits stemming  from
a failure to be in compliance with such  laws or regulations. If any  such actions are instituted against us,
and we are not successful in defending ourselves or asserting our rights, those actions could have a
material adverse effect on our business and results of operations,  including  the imposition of civil,

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criminal and administrative penalties, damages,  monetary  fines, possible  exclusion from participation  in
healthcare programs, contractual damages, reputational harm, diminished profits and  future earnings,
and curtailment of our operations, any of  which  could have a  material adverse  effect  on our ability to
operate our business and our results of  operations.

Our business and operations would suffer  in the  event of computer  system failures or security breaches.

Despite the implementation of security  measures, our internal computer systems, and those of our
CROs, contract manufacturing organizations and other third parties on which we rely, are vulnerable to
damage  from computer viruses, unauthorized access,  security breaches, natural disasters, terrorism, war
and telecommunication and electrical  failures. System failures,  accidents or security breaches could
cause  interruptions in our operations,  and could result in a material disruption  of  our  clinical activities
and business operations, in addition  to  possibly requiring substantial expenditures of  resources  to
remedy. If such an event were to occur  and cause interruptions  in our operations,  it could result in a
material disruption of our commercialization of our product and our product candidate development
programs. For example, the loss of clinical trial  data  from completed or ongoing  clinical trials  could
result in delays in our regulatory approval  efforts and significantly  increase our costs to recover  or
reproduce the data. To the extent that any disruptions  or security breach was to result in a  loss or
damage  to our data or applications, or  inappropriate disclosure  of  confidential or proprietary
information, we could incur significant  unexpected losses,  expenses and  liabilities, we  could  face
litigation or suffer reputational harm  and  the further development of our  product candidates  could  be
delayed.

Risks Related to our Common Stock

Our executive officers, directors and principal stockholders  maintain the  ability  to exert  significant influence
and control over matters submitted to our stockholders for  approval.

Our executive officers, directors and affiliated  stockholders beneficially own  shares representing
approximately 23% of our common stock as  of December  31, 2017. As a  result, if  these  stockholders
were to choose to act together, they  would  be  able  to  exert significant influence  and control over
matters submitted to our stockholders  for approval, as  well as our management and  affairs. For
example, these persons, if they choose to act together, could influence the election of directors and
approval of any merger, consolidation,  sale of  all  or substantially all of our assets  or other business
combination or reorganization. This concentration of voting power could delay  or prevent an
acquisition of us on terms that other stockholders may  desire. The interests of this group  of
stockholders may not always coincide  with the  interests  of  other  stockholders, and  they may  act,
whether by meeting or written consent  of  stockholders,  in a manner that  advances  their  best interests
and not necessarily those of other stockholders, including obtaining a premium value for  their  common
stock, and might affect the prevailing market price  for our common stock.

Provisions in our corporate charter documents and under Delaware law could  make an acquisition  of  us,
which may be beneficial to our stockholders,  more difficult and may prevent attempts  by our stockholders to
replace or remove our current management.

Provisions in our corporate charter and our bylaws  may  discourage, delay  or prevent a merger,

acquisition or other change in control of us that  stockholders may  consider favorable, including
transactions in which our stockholders might otherwise receive  a  premium for their shares. These
provisions could also limit the price that  investors  might be willing to pay in  the future for shares of
our  common stock, thereby depressing  the market price  of  our common stock. In addition, these
provisions may frustrate or prevent any attempts by our stockholders to replace or remove our current
management by making it more difficult for  stockholders  to replace members  of  our  board of directors.
Because our board of directors is responsible for appointing  the members of our management  team,

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these provisions could in turn affect any  attempt by our stockholders  to  replace  current members of
our  management team. Among others,  these provisions:

(cid:129) establish a classified board of directors, and, as a  result, not all directors are elected at one time;

(cid:129) allow the authorized number of our  directors  to  be  changed only by resolution of our board of

directors;

(cid:129) limit the manner in which stockholders can remove directors  from our  board of directors;

(cid:129) establish advance notice requirements for  stockholder proposals that  can  be  acted  on at

stockholder meetings and nominations  to  our board of directors;

(cid:129) require that stockholder actions must be effected at a duly called  stockholder meeting  and

prohibit actions by our stockholders by written consent;

(cid:129) limit who may call stockholder meetings;

(cid:129) authorize our board of directors to  issue preferred  stock,  without  stockholder  approval, which
could be used to institute a ‘‘poison pill’’  that would work to dilute the  stock  ownership of a
potential hostile acquirer, effectively preventing acquisitions that have not been  approved by our
board of directors; and

(cid:129) require the approval of the holders of  at least 67% of the outstanding  voting stock to amend or

repeal certain provisions of our charter or bylaws.

Moreover, because we are incorporated in Delaware,  we are governed by the provisions of

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

The price of our common stock may be volatile and fluctuate  substantially,  which could  result in substantial
losses for purchasers of our common stock.

The market price of our common stock is highly volatile  and may  be  subject to wide fluctuations  in

response to numerous factors, some of which are beyond our control. In addition to the factors
discussed in this annual report on Form 10-K, these  factors include:

(cid:129) the success of competitive products  or technologies;

(cid:129) regulatory actions with respect to our  product or  product candidates  or our  competitors’

products or product candidates;

(cid:129) actual or anticipated changes in our  growth rate relative to our competitors;

(cid:129) the outcome of any patent infringement  or other litigation that  may  be  brought against  us;

(cid:129) announcements  by us or our competitors  of significant  acquisitions, strategic collaborations,  joint

ventures, collaborations or capital commitments;

(cid:129) results of clinical trials of our product candidates  or those of our competitors;

(cid:129) regulatory or legal developments in the EU,  United States and other countries;

(cid:129) developments or disputes concerning patent applications, issued patents or other  proprietary

rights;

(cid:129) the recruitment or departure of key personnel;

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(cid:129) the level of expenses related to our product  or any of our product candidates or clinical

development programs;

(cid:129) actual or anticipated variations in our  quarterly operating  results;

(cid:129) the number and characteristics of our  efforts to in-license or acquire additional product

candidates or products;

(cid:129) introduction of new products or services  by  us  or our competitors;

(cid:129) failure to meet the estimates and projections  of  the investment community  or that we may

otherwise provide to the public;

(cid:129) actual or anticipated changes in estimates as to financial results,  development timelines or

recommendations by securities analysts;

(cid:129) variations in our financial results or those  of companies  that are perceived to be similar to us;

(cid:129) fluctuations in the valuation of companies perceived  by  investors  to  be  comparable to us;

(cid:129) share price and volume fluctuations attributable  to  inconsistent trading volume  levels of our

shares;

(cid:129) announcement or expectation of additional  financing efforts;

(cid:129) sales of our common stock by us, our insiders or  our other stockholders;

(cid:129) changes in accounting practices;

(cid:129) lawsuits and other claims asserted  against  us;

(cid:129) changes in the structure of healthcare payment  systems;

(cid:129) market conditions in the pharmaceutical and biotechnology sectors;

(cid:129) general economic, industry and market conditions;

(cid:129) publication of research reports about us, our competitors or our  industry,  or positive  or negative

recommendations or withdrawal of research coverage by securities  or industry analysts;

(cid:129) other events or factors, many of which are beyond our control;  and

(cid:129) the other factors described in this ‘‘Risk Factors’’ section.

In addition, the stock market in general, and pharmaceutical  and biotechnology  companies in
particular, have experienced extreme  price and volume fluctuations  that have often been unrelated  or
disproportionate to the operating performance  of  these companies. Broad  market and industry factors
may negatively affect the market price of our  common stock, regardless of our actual  operating
performance. The realization of any  of  the  above risks or  any of a broad  range of other risks stated
above could have a material adverse effect on the market price  of our  common stock.

As we operate in the pharmaceutical and biotechnology industry, we are especially vulnerable  to

these factors to the extent that they affect  our industry or our products. In the past, securities class
action litigation has often been initiated against companies  following periods of volatility in their  stock
price. This type of  litigation could result in substantial costs and divert our management’s  attention and
resources, and could also require us to make substantial payments to satisfy  judgments  or to settle
litigation.

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The capped call transactions may affect the value of the  Convertible Notes and our  common  stock.

In connection with the issuance of the Convertible Notes, we entered into capped call transactions

with respect to the Convertible Notes  with certain hedge counterparties. The capped call transactions
will cover, subject to customary anti-dilution adjustments,  the aggregate number of shares  of common
stock underlying the Convertible Notes and are  expected generally to reduce potential dilution to the
common stock upon conversion of the  Convertible Notes in excess of the principal amount of such
converted Convertible Notes. In connection  with establishing  their initial hedges of the  capped call
transactions, the hedge counterparties (or their affiliates) entered  into  various derivative transactions
with respect to the common stock concurrently with,  and/or purchased the common stock shortly after,
the pricing of the Convertible Notes.  The hedge  counterparties (or their affiliates)  are likely to modify
their hedge positions by entering into or  unwinding  various derivative transactions  with respect to the
common stock and/or by purchasing or selling the common  stock  or other securities of ours in
secondary market transactions prior to  the maturity of the  Convertible Notes (and  are likely  to  do so
during the settlement averaging period under the capped  call transactions,  which precedes the maturity
date  of  the Convertible Notes, and on  or around any earlier  conversion  date related to a conversion of
the Convertible Notes). The effect, if any, of any of these transactions and activities on  the market
price of our common stock or the Convertible Notes will  depend in  part on market conditions and
cannot be ascertained at this time, but any of these activities could adversely  affect the value of our
common stock, which could affect the  value of the Convertible  Notes  and the value of our common
stock, if any, that the convertible noteholders receive  upon any conversion of the  Convertible Notes.

A significant portion of our total outstanding  shares  may  be  sold into the market. This could  cause the
market price of our common stock to drop significantly, even if our  business is doing  well.

Sales of a substantial number of shares  of our common stock in the  public  market could occur at

any time. These sales, or the perception in  the market that the holders of  a large number of shares
intend to sell shares, could reduce the market price of our common stock. Certain holders  of our
common stock have rights, subject to some conditions, to require  us to file registration statements
covering their shares or to include their shares in  registration statements that we  may file for ourselves
or other  stockholders. We also have registered on a Form  S-8 registration  statement  all  shares of
common stock that we may issue under our equity compensation  plans.  As a result,  these  shares can be
freely sold in the public market upon issuance, subject to volume limitations  applicable to affiliates. In
addition, certain of our employees, executive officers  and  directors have  entered into, or may  enter
into, Rule 10b5-1 plans providing for sales of shares of our common stock from  time to time. Under a
Rule 10b5-1 plan, a broker executes trades pursuant to parameters  established by the employee,
director or officer when entering into  the plan, without further direction from the employee, officer or
director. A Rule 10b5-1 plan may be amended or terminated in some circumstances. Our employees,
executive officers and directors may also  buy  or sell  additional  shares outside of a Rule 10b5-1 plan
when they are not in possession of material,  nonpublic information.

We may  fail to qualify for continued listing  on The NASDAQ Global Market which could  make it more
difficult for investors to sell their shares.

Our common stock is listed on The NASDAQ Global Market, or  NASDAQ. As a  NASDAQ listed
company, we are required to satisfy the  continued listing  requirements  of  NASDAQ  for inclusion in the
Global Market to maintain such listing, including,  among  other  things, the maintenance of  a minimum
closing bid price of $1.00 per share and stockholders’ equity of at least $10.0  million. There  can be no
assurance that we will be able to maintain  compliance with the continued listing requirements  or that
our  common stock will not be delisted  from NASDAQ  in the future. If  our common  stock  is delisted by
NASDAQ, we could face significant  material  adverse  consequences,  including:

(cid:129) a limited availability of market quotations  for our  securities;

-72-

(cid:129) reduced liquidity with respect to our  securities;

(cid:129) a determination that our shares are a ‘‘penny stock,’’ which will require brokers trading in our

shares to adhere to more stringent rules, possibly resulting in a reduced level of trading activity
in the secondary trading market for our shares;

(cid:129) a limited amount of news and analyst  coverage for  our  company; and

(cid:129) a decreased ability to issue additional securities  or obtain additional financing in the  future.

If securities or industry analysts do not publish research  or reports or  publish  unfavorable research  about
our business, the price of our common  stock and trading volume could decline.

The trading market for our common  stock depends  in part on the  research and  reports that
securities or industry analysts publish  about us or our business. If securities or industry  analysts  do not
initiate or continue coverage of us, the trading price for our common stock would  be  negatively
affected. In the event we obtain securities  or industry analyst  coverage,  if one  or more of the analysts
who covers us downgrades our common  stock, the price of our  common  stock would likely decline. If
one or more of these analysts ceases to cover us or  fails to  publish regular  reports on  us,  interest  in the
purchase of our common stock could  decrease,  which could cause the price  of our  common stock or
trading volume to decline.

We have  broad discretion in the use of  our cash and cash  equivalents and  may  not  use  them  effectively.

We  have broad discretion in the use of our cash  and cash equivalents, and investors  must  rely  on

the judgment of our management regarding the use  of our  cash  and cash equivalents. Our  management
may not use cash and cash equivalents  in ways  that ultimately increase  the value of your investment.
Our failure to use our cash and cash  equivalents  effectively could result  in financial losses that could
have a material adverse effect on our  business, cause the price  of our  common stock to decline and
delay the development of our product  and product candidates. Pending their use, we may  invest  our
cash and cash equivalents in short-term  or long-term, investment-grade, interest-bearing  securities.
These investments may not yield favorable  returns. If we do not invest or apply our  cash and cash
equivalents in ways that enhance stockholder value, we  may fail  to  achieve expected  financial  results,
which  could cause the price of our common stock to decline.

Our disclosure controls and procedures  may not prevent or  detect all  errors or acts  of fraud.

We  are subject to the periodic reporting  requirements of the  Exchange Act. Our  disclosure

controls and procedures are designed  to  reasonably  assure that information required  to  be  disclosed by
us in reports we file or submit under  the Exchange Act  is accumulated  and  communicated to
management, recorded, processed, summarized and reported within the time periods  specified in the
rules and forms of the Securities and Exchange  Commission. We  believe that any disclosure controls
and procedures, no matter how well  conceived and  operated, can provide only reasonable, not absolute,
assurance that the  objectives of the control system are met.

These inherent limitations reflect the reality that judgments can be faulty, and that breakdowns  can

occur because of simple error or mistake. Additionally, controls can be circumvented by the  individual
acts of some persons, by collusion of  two or more people or by an unauthorized override of the
controls. Accordingly, because of the  inherent limitations in our control system, misstatements  due  to
error or fraud may occur and not be detected.

-73-

If the common stock issued as consideration  in  our  recent acquisitions is sold,  such  sales could  cause our
common stock price to decline.

The issuance of our common stock in connection with the Scioderm  and MiaMed acquisitions

could have the effect of depressing the  market price for our common stock,  through dilution of
earnings per share or otherwise. All of  the shares of common stock issued  to  the former security
holders  of Scioderm and MiaMed in  connection  with the closings of  the acquisitions have been
registered under the Securities Act of 1933, as amended (the ‘‘Securities Act’’), pursuant to automatic
shelf registration statements on Form  S-3  (File  Nos.  333-207210  and 333-212414,  respectively for the
Scioderm and MiaMed acquisitions)  and  may now be resold  by the former security  holders of Scioderm
and MiaMed to investors in the general market.

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

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

Item 1B. UNRESOLVED STAFF COMMENTS.

None.

Item 2. PROPERTIES.

The following table contains information about our current  significant leased properties as of

December 31, 2017.

Location

Approximate
Square Feet

Use

Lease expiry  date

Cranbury, New Jersey, USA . . . . . . . . . . . . . . .
Durham, North Carolina, USA . . . . . . . . . . . . .
Buckinghamshire, United Kingdom . . . . . . . . .
Munich, Germany . . . . . . . . . . . . . . . . . . . . . .

90,000
5,603
9,821
4,751

Office and laboratory
Office
Office
Office

September 2025
June  2018
September 2020
April 2022

In addition to the above, we also maintain small offices  in Netherland, Italy, Spain, France, Japan,

Canada and Denmark. We believe that our current office  and  laboratory facilities are adequate and
suitable  for our current and anticipated needs. We believe that,  to  the extent required, we will  be  able
to lease or buy additional facilities at commercially reasonable rates.

Item 3. LEGAL PROCEEDINGS.

Since October 1, 2015, three purported  securities class action  lawsuits were  filed in  the United
States District Court for New Jersey,  naming as defendants the Company, its Chairman  and Chief
Executive Officer, and in one of the  actions, its Chief  Medical Officer. The lawsuits alleged  violations
of the Securities Exchange Act of 1934  in  connection with allegedly false and misleading statements
made by the Company related to the regulatory approval path for migalastat. The  plaintiffs  sought,
among other things, damages for purchasers  of the Company’s Common Stock during different periods,
all of which fall between March 19, 2015 and October 1,  2015. On May  26, 2016,  the Court
consolidated these lawsuits into a single action  entitled In  re Amicus Therapeutics, Inc.  Shareholder
Litigation (C.A. # 3:15-cv-07350) and appointed  a lead plaintiff. The lead plaintiff filed a Consolidated
Amended Class Action Complaint on  July  11, 2016. On August  25, 2016,  the Company and  other

-74-

defendants filed a motion to dismiss in  response to the Consolidated Amended Class Action
Complaint. This motion to dismiss was  fully briefed on October  28, 2016. Before the motion was
decided, the lead plaintiff and defendants  entered  into  a Stipulation  and Agreement of Settlement
dated April 14, 2017. Thereafter, on June 29, 2017,  the Court entered an order granting  preliminary
approval of the Settlement. On November 9,  2017, the Court conducted a fairness hearing  and on
November 15, 2017, entered an Order  and Final Judgment approving the Settlement. Among  other
provisions, the Settlement provides defendants with  a release of all  claims and  involves  the creation of
a Settlement Fund for class members in  the amount of $3.8 million. The majority  of the amount was
covered under insurance and any out  of pocket expenses  were immaterial to the Company’s
consolidated financial statements.

On or about March 3, 2016, a derivative lawsuit was filed by an Amicus shareholder  purportedly

on Amicus’ behalf in the Superior Court of New Jersey, Middlesex County, Chancery Division, against
various officers and directors of the Company. Amicus itself is named  as a  nominal defendant.  The
derivative lawsuit alleges similar facts and circumstances as the three purported  securities class action
lawsuits described above and further  alleges claims  for  breach  of state  law fiduciary  duties, waste of
corporate assets, unjust enrichment, abuse of control, and gross  mismanagement  based on  allegedly
false and misleading statements made by  Amicus related  to the regulatory approval path for migalastat
HCl. The plaintiff seeks, among other things, to require  the Amicus Board to take certain actions  to
reform its corporate governance procedures, including greater  shareholder input and  a provision  to
permit shareholders to nominate candidates for election to the  Board, along  with restitution, costs of
suit and attorney’s fees. On February 7, 2017, the  complaint  was  dismissed by the  Court without
prejudice.

These lawsuits and any other related lawsuits are  subject to  inherent uncertainties and the actual

cost will depend upon many unknown  factors. The outcome of  any litigation  is necessarily uncertain
and we could be forced to expend significant resources in the defense of these lawsuits, and we  may
not prevail.

Item 4. MINE SAFETY DISCLOSURES.

None.

-75-

PART II

Item 5. MARKET FOR THE REGISTRANT’S COMMON EQUITY, RELATED  STOCKHOLDER

MATTERS AND ISSUER PURCHASES OF EQUITY  SECURITIES.

Market For Our Common Stock

Our common stock has been traded on  the NASDAQ Global Market under the symbol ‘‘FOLD’’

since May 31, 2007. Prior to that time, there was  no public market for  our  common stock. The
following table sets forth the range of high and  low  closing sales  prices of our common  stock  as quoted
on the NASDAQ Global Market for  the  periods indicated.

2017
First  Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Second Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fourth Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

High

Low

$ 7.79
$10.44
$15.78
$16.24

$ 5.13
$ 6.65
$10.08
$12.51

High

Low

2016
First  Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Second Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fourth Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$9.21
$8.69
$7.94
$9.35

$5.16
$5.00
$5.58
$4.53

The closing price for our common stock  as reported by the NASDAQ  Global Market on

February 20, 2018 was $14.84 per share.  As of February 20,  2018, there were 24 holders  of record of
our  common stock.

Dividends

We  have never declared or paid any dividends on our  capital stock. We currently  intend to retain
any future earnings to finance our research  and development  efforts, the further development of our
pharmacological chaperone technology and the expansion  of  our business.  We do not intend to declare
or pay cash dividends to our stockholders in the  foreseeable future.

Recent  Sales of Unregistered Securities

We  did not sell any equity securities during the fiscal year ended December 31,  2017 in

transactions that were not registered  under the Securities Act.

Performance Graph

The following performance graph compares the cumulative total return on our common stock

during the last five fiscal years with the NASDAQ Composite Index (U.S.) and the NASDAQ
Biotechnology Index during the same  period.  The graph shows the value at  the end of each  of  the last
five fiscal years, of $100 invested in our  common stock. Pursuant to applicable SEC  rules, all values
assume reinvestment of the full amount of all dividends, however no dividends have  been declared on
our  common stock to date. The stockholder return shown  on the  graph below is not necessarily
indicative of future performance, and we do not make or  endorse any predictions as to future
stockholder returns.

-76-

$600

$500

$400

$300

$200

$100

$-

Amicus Therapeutics, Inc.

NASDAQ Composite

NASDAQ Biotechnology

12/31/2012

12/31/2013

12/31/2014

12/31/2015

12/31/2016

12/31/2017

Amicus Therapeutics, Inc.
NASDAQ Composite
NASDAQ Biotechnology

12/31/2012 12/31/2013 12/31/2014 12/31/2015 12/31/2016 12/31/2017
537
$
229
$
235
$

88
138
166

185
178
194

310
157
222

362
166
247

100
100
100

$
$
$

$
$
$

$
$
$

$
$
$

$
$
$

21FEB201815412584

The stock price performance included  in  this graph is not  necessarily  indicative  of  future stock  price

performance.

Issuer  Purchases of Equity Securities

We  did not repurchase any shares of  our Common Stock during the year ended  December 31,

2017. We have not announced any plans or programs for the repurchase of  our Common Stock.
However employees surrendered 176,194 shares  to  the Company, during the  year  ended December  31,
2017 at a weighted average price of $8.65 per share for the payment  of  the minimum  tax liability
withholding obligations upon the vesting  of RSUs. We do not consider this a share  buyback program.

-77-

Item 6. SELECTED FINANCIAL DATA.

Statement of Operations Data (in thousands except  share  and  per  share data)

2017

2016

2015

2014

2013

Revenue:
Net product sales . . . . . . . . . . . . . . . . . . . . . .
Research revenue . . . . . . . . . . . . . . . . . . . . ..

$

Total  revenue . . . . . . . . . . . . . . . . . . . . . . . . .
Total  cost of  goods sold . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . .

Gross  Profit
Operating  expenses:
Research and  development . . . . . . . . . . . . . . . .
Selling,  general and administrative . . . . . . . . . . .
Changes in fair value of contingent consideration

payable . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss on impairment of assets . . . . . . . . . . . . . . .
Restructuring charges . . . . . . . . . . . . . . . . . . . .
Depreciation and amortization . . . . . . . . . . . . . .

Total  operating expenses . . . . . . . . . . . . . . . . . .
Loss  from operations . . . . . . . . . . . . . . . . . . . .
Other income (expenses):
Interest  income . . . . . . . . . . . . . . . . . . . . . . .
Interest  expense . . . . . . . . . . . . . . . . . . . . . . .
Change in fair  value of warrant liability . . . . . . ..
Loss on extinguishment of debt
. . . . . . . . . . . . .
Other income (expense) . . . . . . . . . . . . . . . . . .

Loss  before tax benefit . . . . . . . . . . . . . . . . . . .
Income tax benefit
. . . . . . . . . . . . . . . . . . . . .

Net  loss . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Net  loss per  common share — basic and diluted . .
Weighted-average common shares outstanding —

$

$

$

36,930
—

36,930
6,236

30,694

149,310
88,671

(234,322)
465,427
—
3,593

472,679
(441,985)

4,096
(17,240)
—
—
6,008

(449,121)
165,119

(284,002)

(1.85)

$

$

4,958
—

4,958
833

4,125

104,793
71,151

6,760
—
69
3,242

186,015
(181,890)

1,602
(5,398)
—
(13,302)
(4,793)

(203,781)
3,739

(200,042)

(1.49)

$

— $
—

—
—

—

76,943
47,269

4,377
—
15
1,833

130,437
(130,437)

929
(1,578)
—
(952)
(80)

(132,118)
—

(132,118)

(1.20)

$

$

$

$

— $

1,224

1,224
—

1,224

47,624
20,717

100
—
(63)
1,547

69,925
(68,701)

223
(1,484)
—
—
(77)

(70,039)
1,113

(68,926)

(0.93)

—
363

363
—

363

41,944
18,893

—
—
1,988
1,719

64,544
(64,181)

174
(46)
9 08
—
—

(63,145)
3,512

(59,633)

1.16

$

$

basic and diluted . . . . . . . . . . . . . . . . . . . . .

153,355,144

134,401,588

109,923,815

74,444,157

51,286,059

Balance Sheet Data (in thousands)

2017

2016

2015

2014

2013

As of December 31,

Cash and cash equivalents and

marketable securities . . . . . . . . . . . . .
Working capital . . . . . . . . . . . . . . . . . .
Total assets . . . . . . . . . . . . . . . . . . . . .
Total liabilities . . . . . . . . . . . . . . . . . . .
Accumulated deficit . . . . . . . . . . . . . . .
Total stockholders’ equity . . . . . . . . . . .

$

$

358,562
321,925
627,024
274,174
(1,063,610)
352,850

$ 330,351
229,105
1,036,845
676,694
(779,608)
$ 360,151

$ 214,033
142,985
908,384
560,550
(579,566)
$ 347,834

$ 169,139
134,392
209,967
87,789
(447,448)
$ 122,178

$ 82,000
77,817
127,563
81,812
(378,522)
$ 45,751

-78-

Item 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS.

Overview

We are a global patient-centric biotechnology company  engaged in the  discovery, development and

commercialization of a diverse set of novel high-quality  treatments  for patients living  with rare
metabolic diseases. The cornerstone of the Amicus portfolio is migalastat  HCl,  an oral precision
medicine for people living with Fabry disease who have  amenable genetic mutations. Migalastat  is
currently approved under the trade name  GALAFOLD in the  European  Union, with  additional
approvals granted  and pending in several geographies.  For Fabry patients with non-amenable genetic
mutations, a novel proprietary enzyme replacement therapy (‘‘ERT’’) co-formulated with migalastat
HCl  is  currently in late preclinical development.

The future value driver of the Amicus  pipeline is ATB200/AT2221, a  novel, late-stage,  potential

best-in-class treatment paradigm for Pompe disease. ATB200/AT2221 leverages our Chaperone-
Advanced Replacement Therapy (‘‘CHART(cid:4)’’) platform  technology to develop novel ERT products for
Pompe disease, Fabry disease, and potentially other lysosomal storage  disorders (‘‘LSDs’’). We are also
investigating preclinical and discovery  programs in  other  rare diseases  including cyclin-dependent
kinase-like 5 (‘‘CDKL5’’) deficiency. We believe that our platform  technologies and our  product
pipeline uniquely position us and drive our commitment to advancing  and expanding a  robust pipeline
of cutting-edge, first- or best-in-class medicines for rare metabolic diseases.

We were previously developing SD-101 in a Phase 3 study as  a  potential first-to-market  therapy for
the chronic, rare connective tissue disorder EB. On September 13,  2017, we  reported that top-line  data
from a randomized, double-blind, placebo-controlled Phase 3 clinical study  (‘‘ESSENCE’’ or  ‘‘SD-005’’)
to assess the efficacy and safety of the  novel topical wound-healing  agent SD-101 did not meet the
primary endpoints or secondary endpoints in  participants with EB. We plan  to  further analyze and
share the Phase 3 ESSENCE results with key stakeholders in the EB community including  physicians,
patient organizations and regulators. In  the interim, in  consultation  with their physicians, participants in
the ongoing extension studies (SD-004 and -006) will  have  the opportunity to continue being treated
with SD-101. Based on the top-line data, we have no current  plans to invest in  any additional clinical
studies or commercial preparation activities for SD-101. This  event  led  to the need to assess the
carrying amount of the program’s tangible  and intangible assets against  their respective fair  values.
Based on the assessment, we recognized  in the Consolidated Statements  of Operations,  a loss  on
impairment of intangible assets in the amount of $463.7 million and $1.7 million in fixed assets
recorded within Loss on Impairment of  Assets. Since the  study  did not meet the  primary  and secondary
endpoints, we concluded that we will not make the potential milestone  payments indicated in the Asset
Purchase Agreement to the former Scioderm  holders. Accordingly, we  recognized  a gain of
$254.7 million in Changes in  Fair Value of Contingent Consideration Payable  in the Consolidated
Statements of Operations in the third quarter  of 2017. We  also  recognized  in the third quarter of 2017,
$0.4 million in selling, general and administrative costs and $8.1 million in research and development
expenses  related to the wind-down of  operations for the Phase 3 ESSENCE study and  ongoing
extension studies SD-004 and SD-006,  as well as  income  tax  benefit of $164.7  million due to the
reduction of the deferred tax liability related to Scioderm IPR&D, in  the Consolidated Statements  of
Operations.

In July 2017, we entered into an underwriting agreement  (the ‘‘Underwriting Agreement’’) with

J.P. Morgan Securities LLC and Goldman Sachs & Co. LLC, as representatives of the  several
underwriters set forth on Schedule 1 thereto,  relating  to  an underwritten public  offering of  the our
common stock (the ‘‘Offering’’). Under the  terms of this agreement, we issued and sold 21,122,449
shares at a price to the public of $12.25 per share, resulting in gross proceeds of $258.8  million, before
deducting underwriting discounts and commissions and  offering  expenses payable by the Company.  The

-79-

Offering closed on July 18, 2017 and we received  net proceeds  from the Offering, after deducting
underwriting discounts and commissions  and  offering  expenses payable by us, of $243.0  million.

On February 15, 2018, we announced  the pricing of an  underwritten offering of 19,354,839 shares

of its common stock at $15.50 per shares, resulting in gross proceeds  of $300.0 million, before
deducting underwriting discounts and  commissions and  offering  expenses payable by us. The offering
closed on February 21, 2018 and we received net  proceeds of  $282.0 million from  the Offering, after
deducting underwriting discounts and  commissions and  offering  expenses payable by us. J.P. Morgan
Securities LLC and Goldman Sachs & Co. LLC  were acting  as joint lead book-running managers,
Cowen and Leerink Partners were acting  as co-book-running managers, and BofA Merrill Lynch was
acting as lead co-manager for the offering.  We expect to use  the net proceeds of the  offering for
investment in the U.S. and international commercial infrastructure  for migalastat  HCl,  investment in
manufacturing capabilities for ATB200, the  continued clinical development of its product candidates,
research and development expenditures, clinical and pre-clinical trial expenditures, commercialization
expenditures and for other general corporate purposes. The securities described  above are  being
offered by us pursuant to a registration  statement previously filed with the  U.S. Securities and
Exchange Commission (the ‘‘SEC’’) on  April 29,  2016, which  became effective automatically upon  the
filing thereof.

Critical Accounting Policies and Significant  Judgments and  Estimates

The discussion and analysis of our financial condition and results  of operations  are based on our
financial statements, which we have prepared in accordance with  U.S.  generally  accepted accounting
principles (‘‘U.S. GAAP’’). The preparation of these  financial statements  requires us to make estimates
and assumptions that affect the reported amounts  of  assets and  liabilities and the disclosure of
contingent assets and liabilities at the  date of the financial statements, as  well as  the reported revenues
and expenses during the reporting periods.  On an ongoing basis, we evaluate our estimates  and
judgments, including those described in  greater  detail below. We base our  estimates on historical
experience and on various other factors that  we believe are reasonable  under the circumstances,  the
results of which form the basis for making  judgments about the carrying value  of  assets and liabilities
that are not readily apparent from other  sources.  Actual results may differ from these estimates under
different assumptions or conditions. We  believe that the following discussion  represents our  critical
accounting policies.

Revenue Recognition

We  recognize revenue when amounts are realized or realizable and  earned, which is typically  upon

receipt by the customer. Revenue is considered realizable  and earned when  persuasive evidence  an
arrangement exists, title to product and  associated risk of loss has passed  to  the customer,  the price is
fixed or determinable, collection of the  amounts due  are reasonably assured and the we  have no  further
performance obligations.

Net Product Sales

Our net  product sales consist solely of sales of GALAFOLD for the treatment of Fabry disease in

the EU. We have recorded revenue on  sales where GALAFOLD  is available either  on a commercial
basis or through a reimbursed early access program. Orders  for  GALAFOLD are generally received
from distributors and pharmacies.

We  record revenue net of estimated  third party  discounts and rebates.  Allowances  are recorded as

a reduction of revenue at the time revenues from product sales are recognized. These allowances  are
adjusted to reflect known changes in factors and may impact such allowances  in the quarter those
changes are known.

-80-

Inventories and Cost of Goods Sold

Until regulatory approval of GALAFOLD, the Company  expensed all manufacturing costs of
GALAFOLD as research and development expense.  Upon  regulatory approval, the Company  began
capitalizing costs related to the purchase  and manufacture  of  GALAFOLD.

Inventories are stated at the lower of  cost and net realizable value determined by the first-in,

first-out method. Inventories are reviewed  periodically to identify slow-moving or obsolete inventory
based on projected sales activity as well  as product shelf-life.  In  evaluating the recoverability  of
inventories produced, the probability that  revenue will  be  obtained from the future sale  of the related
inventory is considered and inventory  value is written  down for inventory  quantities in excess of
expected requirements. Expired inventory is disposed of and the related costs are recognized  as cost of
product  sales in the consolidated statements of operations.

Cost of goods sold includes the cost  of inventory sold, manufacturing and supply chain costs,
product  shipping and handling costs,  and provisions for excess and obsolete inventory, as  well as
royalties payable. A portion of the inventory available  for sale was  expensed as research and
development costs prior to regulatory approval and as such  the cost  of  goods sold and related  gross
margins are not necessarily indicative of future cost  of  goods sold and  gross margin.

Research and Development Expenses

We  expect to continue to incur substantial research and development  expenses as  we continue to
develop our product candidates and explore new  uses for our pharmacological chaperone technology.
Research and development expense consists of:

(cid:129) internal costs associated with our research and  clinical development activities;

(cid:129) payments we make to third party contract research organizations, contract manufacturers,

investigative sites, and consultants;

(cid:129) technology license costs;

(cid:129) manufacturing development costs;

(cid:129) personnel-related expenses, including  salaries, benefits,  travel,  and related costs for the

personnel involved in drug discovery and development;

(cid:129) activities relating to regulatory filings  and the  advancement of our product candidates through

preclinical studies and clinical trials;  and

(cid:129) facilities and other allocated expenses, which  include direct and  allocated expenses for rent,

facility maintenance, as well as laboratory and  other supplies.

We  have multiple research and development projects ongoing at any one time. We utilize our
internal resources, employees, and infrastructure  across multiple projects. We record and maintain
information regarding external, out-of-pocket research and development expenses on  a project-specific
basis.

We  expense research and development  costs as  incurred, including payments  made to date under

our  license agreements. We believe that significant investment in product development is a competitive
necessity and plan to continue these investments in order to realize the potential of our product
candidates.

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The following table summarizes our principal product development  programs,  including the  related

stages of development for each product  candidate  in development, and the out-of-pocket, third  party
expenses incurred with respect to each  product candidate (in thousands):

Years Ended December 31,

2017

2016

2015

Projects
Third party direct project expenses

Migalastat (Fabry Disease) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SD-101 (EB-Epidermolysis Bullosa) . . . . . . . . . . . . . . . . . . . . . .
ATB200 + AT2221 (Pompe Disease) . . . . . . . . . . . . . . . . . . . . . .
Fabry CHART (Fabry Disease) . . . . . . . . . . . . . . . . . . . . . . . . . .
CDKL5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 11,107
15,424
49,890
112
427

$ 14,055
9,530
20,548
435
6,504

$16,805
1,240
21,003
2,001
11

Total third party direct project expenses . . . . . . . . . . . . . . . . . . . .

76,960

51,072

41,060

Other project costs  (1)

Personnel costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other costs  (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total other project costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

50,095
22,255

72,350

36,624
17,097

53,721

25,659
10,224

35,883

Total research and development costs . . . . . . . . . . . . . . . . . . . . . . . . .

$149,310

$104,793

$76,943

(1) Other project costs are leveraged across  multiple projects.

(2) Other costs include facility, supply, overhead, and  licensing costs  that  support multiple  projects.

The successful development of our product candidates is highly uncertain. At this time, we  cannot

reasonably estimate or know the nature, timing, and costs of the  efforts that will be necessary to
complete the remainder of the development of  our product candidates. As a result, we are not able  to
reasonably estimate the period, if any, in  which material net  cash inflows may  commence from our
product  candidates, including migalastat  or any  of our other preclinical product candidates.  This
uncertainty is due to the numerous risks and uncertainties associated  with the conduct, duration, and
cost of clinical trials, which vary significantly over  the life of a project  as a result  of evolving events
during clinical development, including:

(cid:129) the number of clinical sites included  in the trials;

(cid:129) the length of time required to enroll suitable patients;

(cid:129) the number of patients that ultimately participate in  the trials;

(cid:129) the results of our clinical trials; and

(cid:129) any mandate by the FDA or other  regulatory authority to conduct  clinical  trials beyond those

currently anticipated.

Our expenditures are subject to additional  uncertainties, including the terms and  timing of

regulatory approvals, and the expense of  filing, prosecuting, defending, and enforcing  any patent claims
or other  intellectual property rights.  We  may obtain unexpected  results from our clinical trials. We may
elect to discontinue, delay, or modify  clinical trials of some product candidates or  focus on  others. A
change in the outcome of any of the foregoing variables with  respect to the development  of a product
candidate could mean a significant change  in the costs  and timing  associated with  the development,
regulatory approval, and commercialization of that product candidate. For example,  if  the FDA or
other regulatory authorities were to require us to conduct  clinical trials beyond those which we
currently anticipate, or if we experience significant  delays in  enrollment in any  of  our  clinical trials,  we

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could be required to expend significant additional financial resources  and time on  the completion of
clinical development. Drug development takes several years  and millions of dollars  in development
costs.

Stock Option Grants

In accordance with the applicable guidance,  we estimate the fair value of each equity award

granted. We chose the ‘‘straight-line’’  attribution method for allocating compensation costs and
recognized the fair value of each stock  option on a straight-line basis  over the vesting period of the
related awards.

The Company uses the Black-Scholes option pricing model when  estimating the grant date fair

value for stock-based awards. Use of a  valuation  model  requires management to make certain
assumptions with respect to selected model inputs. Expected volatility was  based on  our  historical
volatility since our initial public offering in  May  2007. Beginning  in the third quarter of 2017,  the
average expected life was determined using  our  actual historical data versus a ‘‘simplified’’ method  used
in prior quarters. The ‘‘simplified’’ method of estimating the  expected exercise term  uses the  mid-point
between the vesting date and the end  of  the contractual term. In earlier quarters,  we did  not  have
sufficient reliable exercise data to justify a  change from the  use of the  ‘‘simplified’’  method of
estimating the expected exercise term  of employee  stock option  grants. The impact from this change
was not material. The risk-free interest  rate is based  on U.S.  Treasury, zero-coupon issues with  a
remaining term equal to the expected life assumed at  the date of grant. Forfeitures  are estimated based
on historical analysis of actual option forfeitures.

The weighted average assumptions used in the  Black-Scholes option pricing  model  are as follows:

Years Ended December 31,

2017

2016

2015

Expected stock price volatility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Risk free interest rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected life of options (years) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected annual dividend per share . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

82.8% 81.3% 75.9%
1.7%
1.5%
2.0%
6.25
6.25
6.18
$0.00
$0.00
$0.00

Restricted Stock Units (‘‘RSUs’’) and Performance-Based Restricted Stock Units

The RSUs awarded are generally subject  to  graded vesting and are contingent  on an employee’s
continued service on such date. RSUs are generally subject to forfeiture if  employment terminates  prior
to the release of vesting restrictions. We expense the  cost of the  RSUs, which is determined to be the
fair market value of the shares of common stock  underlying  the RSUs  at  the  date of grant,  ratably over
the period during which the vesting restrictions lapse.

On December 30, 2016, the Compensation Committee approved a form of Performance-Based
Restricted Stock Unit Award Agreement (the ‘‘Performance-Based RSU  Agreement’’),  to  be  used for
performance-based RSUs granted to participants under the Amended and Restated  Amicus
Therapeutics, Inc. 2007 Equity Incentive  Plan, including named  executive officers. Certain awards under
the form of Performance-Based RSU  Agreement  were granted in January  2017. The award includes
401,413 market performance-based restricted stock units (‘‘MPRSUs’’) granted  to  executives.  Vesting  of
these awards  is contingent upon the Company meeting certain total shareholder return (‘‘TSR’’) levels
as compared to a select peer group over the next three years. The MPRSUs cliff vest  at the  end of the
three-year period and have a maximum potential to vest at  200%  (802,826 shares) based  on TSR
performance. The related share-based compensation expense is determined based on the estimated fair
value of the underlying shares on the  date of grant  and  is recognized straight-line  over the vesting term

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The awards also includes 401,413 performance based awards that will  vest  over the next three years
based on the Company achieving certain clinical milestones.

Warrants

In October 2015, we entered into the  October 2015 Purchase  Agreement with  Redmile, who
beneficially owned approximately 6.7% of the Common Stock as of  December 31,  2015, as set  forth in
the October 2015 Purchase Agreement,  whereby we sold, on  a  private placement  basis,
(a) $50.0 million aggregate principal amount of its unsecured promissory  notes and (b) 1.3 million
warrants that have a term of five-years.  The warrants are  classified as equity  and included in
stockholder’s equity. The fair value of  the warrants were  initially  measured at $8.8 million using the
Black-Scholes valuation model. In accordance with applicable guidance,  we allocated the proceeds
received based on the relative fair value  of the  notes and warrants, which resulted in $10.6  million
being recorded as a debt discount.

On February 19, 2016, we entered into a Note and Warrant Purchase  Agreement (the ‘‘February
2016 Purchase Agreement’’) with Redmile Capital fund, LP and certain  funds  and accounts managed or
advised by it (collectively referred to as  ‘‘Redmile’’)  whereby we  sold,  on  a private  placement basis,
(a) $50 million aggregate principal amount of unsecured promissory notes  and (b) five-year warrants to
purchase up to 37 shares of our Common  Stock for every $1,000 of  the principal amount of notes
purchased by each purchaser, for an  aggregate of  up to 1,850,000  shares of Common  Stock issuable
under the warrants. We agreed with Redmile  that in full consideration of the purchase price  for the
notes issued under the October 2015 Purchase Agreement, Redmile surrendered for  cancellation all
notes and warrants acquired from the October 2015 Purchase Agreement and we  paid Redmile  any
unpaid  interest accrued thereunder.

On June 30, 2016, following the marketing approval  for migalastat in Europe, we entered into a

Joinder to and Amendment of Note  and  Warrant Purchase  Agreement (the ‘‘Amended Purchase
Agreement’’) with Redmile. Such amendment  joined GCM Grosvenor Special  Opportunities Master
Fund, Ltd (‘‘GCM’’) to the February  2016 Purchase Agreement. There were no changes to the
previously issued debt. Pursuant to the  Amended Purchase Agreement, we  sold  an additional
$30 million unsecured promissory notes and five year warrants to purchase up  to  42 shares  of the our
Common Stock for every $1,000 of the principal  amount  of additional  Notes purchased,  for an
aggregate of up to 1,260,000 shares of  Common Stock  issuable under the additional  warrants.

On December 15, 2016, we entered into  a Note Purchase Agreement (‘‘Note  Purchase

Agreement’’) with GCM and RedMile,  pursuant  to  which we agreed to prepay all outstanding principal
and accrued and unpaid interest on the  notes  issued by  the Company and held  by  GCM and Redmile.
Such prepayment was made in December,  2016, which  resulted in  a  non-cash  loss of  $13.3 million and
is included as loss on extinguishment  in the  Consolidated  Statement of Operations for  the year ended
December 31, 2016. The Note Purchase  Agreement  did not cancel the  warrants under the Amended
Purchase Agreement described above.

Business Combinations

We  assign fair value to the tangible and intangible assets  acquired  and  liabilities  assumed based

upon their estimated fair values on the acquisition date of acquired businesses. The purchase price
allocation process  requires management  to  make  significant estimates and  assumptions,  especially at  the
acquisition date with respect to intangible assets and in-process research and development (‘‘IPR&D’’).
In connection with the purchase price allocations  for acquisitions, we estimate the fair  value of
contingent acquisition consideration payments utilizing a probability-based  income  approach inclusive of
an estimated discount rate.

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Although we believe the assumptions and estimates  made are reasonable, they are based in part on

historical experience and information obtained from  the management of the acquired businesses and
are inherently uncertain. Examples of critical estimates in valuing any contingent acquisition
consideration issued or which may be  issued and the intangible  assets we have acquired or may acquire
in the future include but are not limited to:

(cid:129) the feasibility and timing of achievement of development,  regulatory and commercial milestones;

(cid:129) expected costs to develop the in-process research and development into commercially  viable

products; and

(cid:129) future  expected cash flows from product  sales.

Unanticipated events and circumstances  may occur  which may  affect the accuracy or  validity  of

such assumptions, estimates or actual results.

Intangible Assets and Goodwill

We  record goodwill in a business combination when the total consideration  exceeds  the fair value

of the net tangible and identifiable intangible assets  acquired.  Purchased in-process research and
development is accounted for as an indefinite lived intangible asset  until  the underlying project is
completed, at which point the intangible  asset will  be  accounted for  as a  definite lived intangible asset,
or abandoned, at which point the intangible asset will  be  written  off or partially  impaired. Goodwill and
indefinite lived intangible assets are assessed annually for impairment on October  1 and whenever
events or circumstances indicate that  the carrying amount of an asset may not be recoverable.  If it  is
determined that the full carrying amount  of an  asset is not recoverable, an impairment loss is  recorded
in the amount by which the carrying amount of the asset exceeds its fair value.  No indicators of
impairment were noted during the year  ended December 31, 2016.

Valuation of Contingent Consideration Payable

Each  period we reassess the fair value  of the contingent acquisition consideration  payable
associated with certain acquisitions and  record changes in the fair value as contingent consideration
expense. Increases or decreases in the  fair value of the  contingent acquisition consideration payable  can
result from changes in estimated probability adjustments with  respect  to  regulatory  approval, changes in
the assumed timing of when milestones are likely to be achieved and  changes in  assumed discount
periods and rates. Significant judgment is employed in determining the  appropriateness of  these
assumptions each period. Accordingly,  future business and economic conditions, as well  as changes in
any of the assumptions described in the accounting for business combinations above can  materially
impact the amount of contingent consideration expense that we record in any  given period.

Accrued Expenses

When we are required to estimate accrued  expenses because  we  have not yet  been invoiced  or

otherwise notified of actual cost, we  identify services that  have been performed on our behalf and
estimate the level of service performed  and the associated cost incurred. The majority of our service
providers invoice us monthly in arrears  for services performed.  We make estimates of our accrued
expenses as of each balance sheet date  in our financial statements based on facts  and circumstances
known to us. Examples of estimated accrued expenses include:

(cid:129) fees owed to contract research organizations  in connection with preclinical and toxicology  studies

and clinical trials;

(cid:129) fees owed to investigative sites in connection with clinical trials;

(cid:129) fees owed to contract manufacturers in connection with the  production  of  clinical trial  materials;

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(cid:129) fees owed for professional services, and

(cid:129) unpaid salaries, wages and benefits.

Results of Operations

Year Ended December 31, 2017 Compared to Year  Ended  December 31, 2016

Revenue. Net product sales were $36.9 million for GALAFOLD for the year ended  December 31,

2017 as compared to $5.0 million for  the year ended December  31, 2016. GALAFOLD was approved
for sale in the EU in May 2016 and has been approved  for pricing and reimbursement in  18 countries,
as well as in select other European markets through reimbursed EAPs. We  began to recognize  revenue
in the  third quarter of 2016.

Cost of Goods Sold. Cost of goods sold includes manufacturing  costs as  well as  royalties

associated with sales of our product.  Cost of goods sold as  a  percentage of net sales was 16.9% for the
year ended December 31, 2017 as compared to 16.8% for the  year ended December  31, 2016.

Research and Development Expense. Research and development expense was  $149.3 million in
2017, representing an increase of $44.5  million or  42.5% from  $104.8 million  in 2016. The increase in
research and development costs was  primarily due to increases in clinical research and manufacturing
costs of $25.9 million, due to the advancement and enrollment of  clinical studies and  investments in
manufacturing, for Pompe of $29.4 million and EB of $5.9 million. Other increases were  in personnel
costs of $13.5 million.

Selling, General and Administrative Expense. Selling, general and administrative expense  was
$88.7 million in 2017, an increase of $17.5  million or 24.6% from $71.2 million in 2016.  The increase in
2017 was primarily from efforts to support the ongoing commercial launch of GALAFOLD.

Changes in Fair Value of Contingent Consideration Payable. For the year ended December 31,

2017, we recorded a gain of $234.3 million  representing  a change of $241.1 million from the
$6.8 million of expense for the year ended December 31, 2016. The  change in the  fair value  resulted
from a decrease in the change attributable to the  Scioderm,  Inc. (‘‘Scioderm’’)  contingent consideration
of $257.3 million and an increase in the change attributable  to  the Callidus contingent consideration of
$16.2 million. The fair value and change in fair value  are impacted by  updates to the  estimated
probability of achievement, assumed  timing of milestones and adjustments to the  discount periods and
rates. The decrease in Scioderm contingent consideration was due  to  the results  announced in
September 2017 that the study did not meet the primary endpoints  or  secondary endpoints in
participants, and, as a result, the contingent  consideration is  no  longer payable.

Loss  on Impairment of Assets. For the year ended December 31, 2017,  we recorded $465.4 million

as impairment charges to assets, which primarily  included $463.7 million in IPR&D. The impairment
was assessed after the announcement  of  the results  from the  Phase 3  ESSENCE  study.

Depreciation. Depreciation expense was $3.6 million in 2017,  representing an  increase of
$0.4 million as compared to $3.2 million in 2016.  Depreciation was higher due to increased asset
acquisitions, resulting in a higher depreciation base in 2016.

Interest  Income.

Interest income was $4.1 million for the  year ended December 31, 2017,

representing an increase of $2.5 million  from $1.6 million for the  year ended December 31, 2016.  The
increase in interest income was due to the overall  higher average cash and investment balances as  a
result of our financing transactions.

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Interest Expense.

Interest expense was $17.2 million in 2017 as compared to $5.4 million in 2016.
Interest expense in 2017 reflected a full year interest expense amounts as compared  only  a partial year
interest expense amount in 2016 as the  debt  was  secured in  December 2016.

Loss  from Extinguishment of Debt. For the year ended December 31, 2016, we recognized a
non-cash loss of $13.3 million arising from the  early  extinguishment  of the $80 million secured loan in
the fourth quarter of 2016. There was  no  such  event  in the year ended December 31,  2017.

Other Income/ expense. Other income was $6.0 million for the year ended December 31, 2017 as

compared to other expense of $4.8 million for the year ended December  31, 2016. The increase was
primarily due to unrealized gains on foreign exchange transactions.

Income Tax Benefit. For the year ended December 31, 2017, the Company recorded an income

tax benefit of $165.1 million, as compared  to  a benefit  of  $3.7  million in 2016. The increase  was
primarily due to the reduction of the deferred tax liability of $164.7 million related to Scioderm
IPR&D as a result of the announcement  of the  Phase 3  ESSENCE study.  The  Company recorded an
income tax benefit of $2.7 million in  the  Consolidated Statement of Operations, in connection  with the
reduction in the statutory corporate income tax  rate.

Year Ended December 31, 2016 Compared to Year Ended December 31, 2015

Revenue. Net product sales were $5.0 million for the year ended December 31, 2016 due to

marketing approval of GALAFOLD granted in  May  2016.

Cost of Goods Sold. Cost of goods sold includes manufacturing costs  as well  as royalties

associated with sales of our product.  Cost of goods  sold  as  a  percentage of net sales was 16.8% for the
year ended December 31, 2016.

Research and Development Expense. Research and development expense was $104.8 million in

2016, representing an increase of $27.9  million or 36.3%  from  $76.9 million  in 2015. The increase in
research and development costs was  primarily due to increases in clinical research costs  of
$11.3 million, due to the advancement  and enrollment of clinical  studies, primarily  for EB  program of
$8.3 million. Also included in the research  and development expenses was $6.5 million which represents
expense associated with the acquisition of the CDKL5  asset.  Other increases were in personnel costs of
$11.0 million.

Selling, General and Administrative Expense. Selling, general and administrative expense  was
$71.2 million in 2016, an increase of $23.9  million or 50.5% from $47.3 million in 2015.  The increase in
2016 was primarily from efforts to support the international  activities and commercial launch  of
GALAFOLD in May 2016. The increases  were seen in personnel costs of $16.2 million, legal and  audit
fees of  $3.2 million and travel related  expenses of  $1.7 million.

Changes in Fair Value of Contingent Consideration Payable. For the year ended December 31,

2016, we recorded expense of $6.8 million representing  an increase  of $2.4 million from  the
$4.4 million of expense for the year ended December 31, 2015. The  change in the  fair value  resulted
from an increase in the Scioderm contingent consideration  of $8.5 million and  a decrease to the
Callidus contingent consideration of  $6.1  million. The fair value is impacted by updates to the
estimated probability of achievement,  assumed timing of milestones  and adjustments to the  discount
periods and rates.

Depreciation. Depreciation expense was $3.2 million in 2016,  representing an  increase of
$1.4 million as compared to $1.8 million in 2015.  Depreciation was higher due to increased asset
acquisitions, resulting in a higher depreciation base in 2016.

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Interest Income.

Interest income was $1.6 million for the year ended December 31, 2016,

representing an increase of $0.7 million  from $0.9  million  for the  year ended December 31, 2015.  The
increase in interest income was due to the overall higher average cash and investment balances as  a
result of our financing transactions.

Interest Expense.

Interest expense was $5.4 million in 2016 as compared to $1.6 million in 2015.
Interest expense was higher due to the  $50 million notes  payable borrowed in  October 2015  and the
related revised agreement in February  2016, as well as the $250 million convertible debt  secured in
December 2016.

Loss  from Extinguishment of Debt. We recognized a non-cash loss of $13.3  million  for the  year
ended December 31, 2016 arising from the early extinguishment of the $80 million secured loan in  the
fourth quarter of 2016. For the year ended  December  31, 2015, we recognized a  loss of $1.0 million
arising from the early extinguishment  of the  $15  million secured loan in the first quarter of 2015.

Other Expense. Other expense was $4.8 million for the  year  ended December 31, 2016 as

compared to $0.1 million for the year  ended December 31, 2015.  The  change  was primarily  from losses
on foreign exchange transactions.

Tax Benefit. For the year ended December 31, 2016, the Company recorded an income tax  benefit
of $3.7 million, primarily consisting of $1.2 million from reduction in its valuation allowances to reflect
the income tax associated with the gain on foreign currency  translation, and $2.7 million in  connection
with the reduction in state tax rates in North Carolina.

Liquidity and Capital Resources

Sources of Liquidity

As a result of our significant research and  development expenditures as well  as expenditures  to
build a commercial organization to support the  launch of GALAFOLD, we have not been  profitable
and have generated operating losses since we were incorporated in  2002. We  have historically funded
our  operations principally through the issuance  and sale of stock, collaborations, debt  financings, grants
and non-refundable license fees.

On February 15, 2018, we announced  the pricing of an  underwritten offering of 19,354,839 shares

of its common stock at $15.50 per shares, resulting in gross proceeds  of $300.0 million, before
deducting underwriting discounts and  commissions and  offering  expenses payable by us. The offering
closed on February 21, 2018 and we received net  proceeds of  $282.0 million from  the Offering, after
deducting underwriting discounts and  commissions and  offering  expenses payable by us. J.P. Morgan
Securities LLC and Goldman Sachs & Co. LLC  were acting  as joint lead book-running managers,
Cowen and Leerink Partners were acting  as co-book-running managers, and BofA Merrill Lynch was
acting as lead co-manager for the offering.  We expect to use  the net proceeds of the  offering for
investment in the U.S. and international commercial infrastructure  for migalastat  HCl,  investment in
manufacturing capabilities for ATB200, the  continued clinical development of its product candidates,
research and development expenditures, clinical and pre-clinical trial expenditures, commercialization
expenditures and for other general corporate purposes.

In July 2017, the Company entered into an underwriting  agreement (‘‘the Underwriting

Agreement’’) with J.P. Morgan Securities LLC and Goldman Sachs & Co. LLC,  as representatives of
the several underwriters set forth on Schedule  1 thereto, relating to an underwritten public offering of
the Company’s common stock (the ‘‘Offering’’). Under the terms  of the Underwriting Agreement, the
Company issued and sold 21,122,449 shares at  a price to the  public of  $12.25 per share,  resulting in
gross  proceeds of $258.8 million, before  deducting underwriting discounts and commissions and  offering
expenses payable by the Company. The  Offering closed on July 18,  2017 and the Company received  net

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proceeds from the Offering, after deducting underwriting  discounts and commissions  and offering
expenses payable by the Company of $243.0 million.

In December 2016, we issued $250 million  aggregate principal amount of 3.00%  unsecured
Convertible Senior Notes due 2023 (the  ‘‘Convertible Notes’’),  in a  private offering to qualified
institutional buyers pursuant to Rule 144A under the  Securities Act. The Notes bear  interest at a fixed
rate of 3.00% per year, payable semiannually  on June 15 and December 15 of  each  year,  beginning  on
June 15, 2017. The Notes will mature on  December 15,  2023, unless  earlier repurchased, redeemed, or
converted in accordance with their terms. The net  proceeds from the Note  Offering were
$243.0 million, after deducting fees and  estimated expenses payable by  the  Company. The Company
also used approximately $13.5 million of the  net proceeds from the Note  Offering to pay the  cost of
the capped call transactions (‘‘Capped  Call Confirmations’’) that the  Company entered into in
connection with the Note Offering.

Beginning in April 2016 and through July  2016, we  sold  15.0 million shares  of  Common Stock
under an at-the-market (‘‘ATM’’) equity program with Cowen  and Company, LLC  (‘‘Cowen’’) acting as
sales agent. Cowen was compensated at a fixed commission rate up to 3.0%. The ATM sales agreement
resulted in net proceeds of $97.1 million, after Cowen’s commission of  $2.7 million  and other  expenses
of $0.2 million. We have completed all  sales under the  ATM equity program.

Cash flows

As of December 31, 2017, we had cash and cash  equivalents and marketable  securities of
$358.6 million. We invest cash in excess  of our immediate requirements  with regard to liquidity and
capital preservation in a variety of interest-bearing instruments, including obligations  of  U.S.
government agencies and money market  accounts. Wherever possible, we seek to minimize the
potential effects of concentration and  degrees  of risk.  Although we maintain cash balances with
financial institutions in excess of insured limits, we  do  not anticipate any losses with respect to such
cash balances. For more details on the cash,  cash equivalents and marketable securities, refer to
‘‘— Note 5. Cash, Money Market Funds  and Marketable Securities,’’  in our  Notes to Consolidated
Financial Statements.

Net Cash Used in Operating Activities

Net cash used in operations for the year ended  December 31, 2017 was $215.5 million. The

components of net cash used in operations  included the net  loss for the year ended  December 31, 2017
of $284.0 million, an increase in operating assets of  $26.5 million  and decrease in deferred
reimbursements of $12.6 million. The  increase in operating  assets was primarily due to the change  in
prepaid and other current assets of $15.3 million for spending  to  support commercial activities  for
GALAFOLD launch and a corresponding  increase in accounts receivable by $7.7 million due to
commercial sales of GALAFOLD. The decrease in  deferred reimbursements  was due to milestone
payments made to GSK. The net cash used in  operations was partially offset by an  increase in accounts
payable and accrued expenses of $12.6 million, mainly related  to  program expenses and support for the
commercial launch of GALAFOLD.

Net cash used in operations for the year ended  December 31, 2016 was $150.5 million. The

components of net cash used in operations  included the net  loss for the year ended  December 31, 2016
of $200.0 million and the increase in  operating  assets of $6.8 million.  The  increase in operating assets
was primarily driven by increases in inventories  of  $3.7 and  increase  in accounts receivable  by
$1.4 million due to increase in commercial sales. The net cash used in operations was partially offset by
an increase in operating liabilities of  $7.1 million for the increase in accounts  payable and accrued
expenses related to program expenses  and support for the commercial  launch of GALAFOLD.

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Net Cash Used in Investing Activities

Net cash used in investing activities for  the year ended December 31,  2017 was $171.2 million. Our

investing activities have consisted primarily of purchases and sales and maturities of investments and
capital expenditures. Net cash used in  investing activities reflects $490.5 million for the purchase of
marketable securities, $4.5 million for  the acquisition of property and equipment, partially offset by
$323.8 million for the sale and redemption of marketable securities.

Net cash used in investing activities for  the year ended December 31,  2016 was $4.5 million. Our
investing activities have consisted primarily of purchases and sales and maturities of investments and
capital expenditures. Net cash used in  investing activities reflects $219.9 million for the purchase of
marketable securities, $6.0 million for  the acquisition of property and equipment, partially offset by
$221.4 million for the sale and redemption of marketable securities.

Net Cash Provided by Financing Activities

Net cash provided by financing activities for the year ended  December 31, 2017 was $247.4  million.

Net cash provided by financing activities reflects $243.0 million from issuance of common stock,
$16.3 million from exercise of stock options,  partially offset by $10.0 million from  contingent
consideration payments, $1.6 million from vesting of RSUs and  $0.3 million from payments on  capital
lease arrangements.

Net cash provided by financing activities for the year ended  December 31, 2016 was $272.7  million.

Net cash provided by financing activities reflects $97.1 million from issuance of common stock,
$272.5 million from proceeds of financing arrangements, $3.0 million from exercise  of  stock options,
partially offset by $80.2 million from  payments on the secured loans and payments on capital  lease
arrangements, $13.5 million for capped  call fees related to securing debt and $1.3 million from  vesting
of RSUs.

Funding Requirements

We  expect to incur losses from operations for the  foreseeable future primarily due to research and

development expenses, including expenses related  to  conducting clinical trials.  Our future capital
requirements will depend on a number  of factors,  including:

(cid:129) the progress and results of our clinical trials  of our drug candidates;

(cid:129) the cost of manufacturing drug supply for our  clinical and  preclinical  studies, including the

significant cost of new Fabry ERT cell line development and manufacturing as  well as the  cost of
manufacturing Pompe ERT;

(cid:129) the scope, progress, results and costs of preclinical development, laboratory testing  and clinical
trials for our product candidates including  those testing the use of pharmacological  chaperones
co-formulated and co-administered with ERT and for the treatment of LSDs;

(cid:129) the future results of on-going preclinical research and subsequent clinical  trials for  CDKL5,
including our ability to obtain regulatory approvals  and  commercialize  CDKL5 and obtain
market acceptance for CDKL5;

(cid:129) the costs, timing and outcome of regulatory  review of our product  candidates;

(cid:129) the number and development requirements of  other  product candidates that we pursue;

(cid:129) the costs of commercialization activities,  including product marketing, sales and  distribution;

(cid:129) the emergence of competing technologies and other  adverse  market  developments;

(cid:129) our ability to obtain reimbursement for migalastat HCl;

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(cid:129) our ability to obtain market acceptance of migalastat HCl in the EU;

(cid:129) the costs of preparing, filing and prosecuting patent applications and  maintaining, enforcing and

defending intellectual property-related claims;

(cid:129) the extent to which we acquire or  invest in  businesses, products and  technologies;

(cid:129) our ability to successfully integrate  our acquired products  and technologies into our business,

including the possibility that the expected  benefits of  the transactions will not be fully realized by
us or may take longer to realize than expected; and

(cid:129) our ability to establish collaborations and obtain milestone,  royalty or other payments from any

such collaborators.

While we generated revenue from product sales in 2017, in the absence of additional funding, we

expect our continuing operating losses  to  result  in increases  in our  cash  used in operations over the
next several quarters and years. We may  seek additional funding through public or private financings of
debt or equity. We believe that our current  cash position, including proceeds  from the recent equity
offering and expected Galafold revenues,  is sufficient to fund ongoing Fabry and Pompe program
operations into at least 2021. Potential future  business  development collaborations, pipeline expansion,
and investment in biologics manufacturing capabilities could  impact our future capital requirements.

Financial Uncertainties Related to Potential Future Payments

Milestone Payments / Royalties

We  acquired exclusive worldwide patent rights  to  develop and commercialize  migalastat and  other

pharmacological chaperones for the prevention or  treatment of human diseases or clinical conditions by
increasing the activity of wild-type and mutant enzymes pursuant  to  a  license  agreement with MSSM.
This agreement expires upon expiration of the last of the  licensed  patent  rights, which  will  be  in 2018
in the U.S. and 2019 in Europe and Japan for monotherapy. If we develop a product for combination
therapy of specific pharmacological chaperone such  as migalastat  plus an ERT for certain Lysosomal
Storage Disorders such as Fabry disease  and a patent issues from the  pending MSSM applications
covering such a combination therapy(ies),  expiration for  the combination product(s) will be 2024.
Under this agreement, to date we have paid  no upfront  or  annual license fees and have no milestone
or future payments other than royalties  on net  sales.

Under our license  agreements, if we  owe royalties on net  sales  for one of  our products to more
than one of the above licensors, then we  have the  right to reduce  the royalties owed to one licensor for
royalties paid to another. The amount of  royalties  to  be  offset is generally limited in each  license and
can vary under each agreement. For  migalastat in 2017,  we  incurred $1.1 million of  royalty expense
under the agreement with MSSM.

In November 2013, we entered into the Revised Agreement with GlaxoSmithKline (‘‘GSK’’),

pursuant to which we have obtained  global rights to develop and commercialize migalastat  as a
monotherapy and in combination with ERT for  Fabry disease. The Revised Agreement  amends  and
replaces in its entirety the earlier agreement entered into between  us and  GSK  in July  2012. Under the
terms of the Revised Agreement, there was  no upfront  payment from  us to GSK. For  migalastat
monotherapy, GSK is eligible to receive post-approval and sales-based  milestones up to $40 million,  as
well as tiered royalties in the mid-teens in eight  major markets outside  the U.S. In addition,  because we
reacquired worldwide rights to migalastat,  we are  no longer eligible  to  receive any  milestones or
royalties we would have been eligible to receive under the  Original Collaboration Agreement. For  the
year ended December 31, 2017, we incurred  approximately  $3.9 million of royalty expense under  the
agreement with GSK.

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As part of the acquisition of Callidus, we will be obligated to make additional payments to the
former stockholders of Callidus upon  the achievement  by  the Company of certain  clinical milestones of
up to $35 million and regulatory approval milestones  of up  to  $105 million  as set forth in the merger
agreement. We may, at our election,  satisfy certain milestone payments identified in  the merger
agreement aggregating $40 million in shares of our Common Stock (calculated based on a  price per
share equal to the average of the last  closing bid price  per share for the Common  Stock on  The
NASDAQ Global Select Market for  the ten trading days immediately preceding the date of payment).
The milestone payments not permitted to be satisfied in Common Stock  (as  well as any payments that
we are permitted to, but choose not to, satisfy in  Common Stock), as a result of the  terms of the
merger agreement, the rules of The NASDAQ Global  Select Market, or otherwise, will be paid  in cash.
During  the second quarter of 2016, we reached the  first clinical milestone for  Callidus, which was the
dosing of the first patient in a Phase 1  or  2 study. The milestone  payment for this event was
$6.0 million which was paid in the Company’s stock during the  second quarter  of  2016. See ‘‘—Note  10.
Assets and Liabilities at Fair Value’’, in our  Notes to Consolidated Financial Statements  for more  details.

As part of the acquisition of MiaMed, we  will be obligated to make additional payments to the
former stockholders of MiaMed upon the  achievement by the  Company of certain clinical milestones  of
up to $8 million, regulatory approval milestones of up  to  $10  million,  and  commercial milestones up to
$65 million. Any milestone payment may  be satisfied in  cash, shares of Common  Stock, or a
combination of both. The milestone payments  not  permitted  to  be  satisfied in Common Stock (as well
as any payments that we are permitted to, but choose not to, satisfy in Common Stock), as a  result of
the terms of the merger agreement, the  rules of The NASDAQ  Global  Select Market, or otherwise, will
be paid in cash. No milestone payments in connection with the  acquisition  of MiaMed have been paid.

Contractual Obligations

The following table summarizes our significant contractual obligations and  commercial
commitments at December 31, 2017  and the  effects such obligations are expected to have on our
liquidity and cash flows in future periods (in thousands).

Operating lease obligations  (2) . . . . . . . . . .
Capital lease obligations, including

interest  (3) . . . . . . . . . . . . . . . . . . . . . . .
Debt obligations, including interest  (4)
. . . .
Total fixed contractual obligations  (1) . . . . .

Total

Less than 1 year

1-3 years

3-5 years Over 5 years

$ 18,516

$ 2,762

$ 5,047

$ 4,584

$

6,123

490
295,313

356
7,500

134
15,000

—
15,000

—
257,813

$314,319

$10,618

$20,181

$19,584

$263,936

(1) This table does not include (a) any milestone payments  which may become payable to third  parties
under license agreements as the timing and likelihood of  such payments are not known, (b) any
royalty payments to third parties as the  amounts  of such payments, timing and/or  the likelihood of
such payments are not known, (c) amounts, if  any, that  may  be  committed in  the future  to
construct additional facilities, (d) agreements  with clinical research organizations  and other outside
contractors who are partially responsible for conducting and monitoring our clinical trials for our
drug candidates including migalastat.  These contractual obligations  are  not reflected in the  table
above because we may terminate them  without penalty, and (e) contracts that are entered into in
the ordinary course of business which are not material in the  aggregate  in any period presented
above.

(2) Represents the future payments  on  operating leases for properties at the United States and
international locations. For more details, refer to ‘‘—  Note 12.  Leases,’’  in our Notes to
Consolidated Financial Statements.

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(3) Represents the future payments  of  principal and  interest  to  be  made on our capital leases. These

financing arrangements of $0.9 million have interest of approximately 0.2-5.7%, and lease terms  of
36-48 months. For more details, refer  to ‘‘— Note 12. Leases,’’ in our Notes to Consolidated
Financial Statements.

(4) Represents the future payments  of  principal and  interest  to  be  made on our $250 million 3%

unsecured Convertible Senior Notes due 2023  (the  ‘‘Convertible Notes’’). The Convertible  Notes
bear interest at a fixed rate of 3.00%  per  year, payable semiannually on June  15 and December  15
of each year, beginning on June 15, 2017 and will mature on December 15, 2023. For more details,
refer to ‘‘— Note 16. Debt Instruments and Related Party Transactions,’’  in our Notes to
Consolidated Financial Statements.

We  have no other lines of credit or other  committed sources of capital. To the  extent our  capital
resources are insufficient to meet future  capital requirements, we will  need to raise additional capital or
incur indebtedness to fund our operations. We cannot  assure you that additional debt or equity
financing will be available on acceptable  terms, if  at all.

Off-Balance Sheet Arrangements

We  had no off-balance sheet arrangements as of December 31, 2017 and 2016.

Recent  Accounting Pronouncements

Please refer to ‘‘— Note 2. Summary of Significant Accounting Policies,’’ in our Notes to

Consolidated Financial Statements.

Item 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

Market risk is the risk of change in fair value of a  financial instrument due to changes in  interest

rates, equity prices, creditworthiness, financing, exchange rates or other factors. Our primary market
risk exposure relates to changes in interest rates in our cash, cash equivalents  and marketable
securities. We place our investments  in high-quality financial instruments, primarily money market
funds,  corporate debt securities, asset backed  securities and U.S. government  agency notes with
maturities of less than one year, which  we  believe  are subject  to  limited  interest rate and credit  risk.
The securities in our investment portfolio  are  not  leveraged, are  classified as available-for-sale and, due
to the short-term nature, are subject to minimal interest rate  risk. We currently do not hedge interest
rate exposure and consistent with our investment policy, we do  not  use derivative financial  instruments
in our investment portfolio. We believe that a  1% (100 basis points) change in average  interest  rates
would either increase or decrease the market value  of our investment portfolio by $1.3  million. At
December 31, 2017, we held $358.6 million in  cash, cash equivalents  and  available for sale securities
and they were all due on demand or  within  one year.  Our outstanding debt has a fixed interest rate
and therefore, we have no exposure to interest rate fluctuations.

We  have operated primarily in the U.S. with international operations increasing since the  last
quarter of 2015. We do conduct some clinical  activities with vendors  outside  the U.S.  While  most
expenses are paid in U.S. dollars, we  now  have increased transactions of expenses and cash  flows  in
foreign currencies that are exposed to  changes in foreign  currency rates.

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Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

Management’s Report on Consolidated Financial  Statements  and
Internal Control over Financial Reporting

The management of Amicus Therapeutics,  Inc. has prepared, and is responsible for the Company’s

consolidated financial statements and related footnotes. These  consolidated financial  statements have
been prepared in conformity with U.S.  generally accepted accounting principles (‘‘U.S. GAAP’’).

We  are responsible for establishing and maintaining adequate internal control over financial

reporting. Internal control over financial  reporting is defined in Rule 13a-15(f) or 15d-15(f)
promulgated under the Securities Exchange Act  of  1934 as a process designed by, or  under the
supervision of the Company’s principal executive and principal financial officers and effected  by  the
Company’s board of directors, management, and  other  personnel, to provide reasonable assurance
regarding the reliability of financial reporting and the preparation of financial statements for external
purposes  in accordance with U.S. GAAP  and includes those  policies and procedures that:

(cid:129) pertain to the maintenance of records that in reasonable detail accurately and fairly  reflect the

transactions and dispositions of the assets of  Amicus  Therapeutics,  Inc.;

(cid:129) 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 Amicus therapeutics, Inc. are  being  made only in accordance with
authorizations of management and directors of Amicus therapeutics, Inc.; and

(cid:129) provide reasonable assurance regarding prevention or  timely detection of unauthorized

acquisition, use or disposition of the  assets of  Amicus  Therapeutics, Inc. 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.

We  assessed the effectiveness of our  internal control over financial reporting as of December  31,

2017. In making this assessment, we used the  criteria set forth by the Committee of Sponsoring
Organizations of the Treadway Commission (2013 framework) (‘‘COSO’’) in  Internal Control —
Integrated Framework. Based on our  assessment we believe that, as of December  31, 2017, our internal
control over financial reporting is effective based on those criteria.

The effectiveness of the Company’s internal control over  financial reporting  as of December 31,
2017 has been audited by Ernst & Young LLP, an independent registered  public accounting firm, as
stated in their report. This report appears on the following page.

Dated March 1, 2018

/s/ John F. Crowley

/s/ William D. Baird III

Chairman and Chief Executive Officer

Chief Financial Officer

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Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors  of
Amicus Therapeutics, Inc.

Opinion on Internal Control over Financial  Reporting

We  have audited Amicus Therapeutics, Inc.’s  internal control  over financial reporting  as of
December 31, 2017, based on criteria  established in Internal Control — Integrated Framework  issued
by the Committee  of Sponsoring Organizations of the Treadway Commission  (2013  framework), (the
‘‘COSO criteria’’). In our opinion, Amicus Therapeutics, Inc. (the Company) maintained, in all material
respects, effective control over financial  reporting as of December 31, 2017, based  on the COSO
criteria.

We  also have audited, in accordance  with the standards of  the Public Company Accounting

Oversight Board (United States) (PCAOB), the  consolidated  balance  sheets  of Amicus
Therapeutics, Inc. as of December 31, 2017 and 2016,  and the  related consolidated statements of
operations, comprehensive loss, changes in stockholders’  equity and cash  flows for each of the  three
years in the period ended December 31,  2017, and the related notes and our report  dated March 1,
2018 expressed an unqualified upon thereon.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over  financial
reporting and for its assessment of the  effectiveness  of  internal control  over financial reporting included
in the accompanying Management’s Report on  Consolidated  Financial  Statements and  Internal  Control
Over Financial Reporting. Our responsibility is to express an  opinion on  the Company’s  internal control
over financial reporting based on our audit. We are  a public  accounting firm registered with the
PCAOB and are required to be independent with respect to the  Company in accordance  with the U.S.
federal securities laws and the applicable rules and  regulations of  the Securities and  Exchange
Commission and the PCAOB.

We  conducted our audit in accordance with the standards of  the PCAOB. Those  standards require

that we plan and perform the audit to  obtain reasonable assurance  about whether  effective  internal
control over financial reporting was maintained in all material respects.

Our audit included obtaining an understanding  of internal  control over  financial reporting,

assessing the risk that a material weakness exists, testing  and  evaluating  the design and operating
effectiveness of internal control based  on the assessed risk,  and performing  such other procedures as
we considered necessary in the circumstances. We believe that  our audit  provides a reasonable basis for
our  opinion.

Definition and Limitations of Internal  Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide  reasonable

assurance regarding the reliability of  financial  reporting and the preparation  of  financial  statements  for
external  purposes in accordance with  generally accepted accounting  principles. A company’s internal
control over financial reporting includes those policies and procedures that (1) pertain to the
maintenance of records that, in reasonable  detail, accurately and fairly reflect the  transactions and
dispositions of the assets of the company; (2) provide reasonable assurance that transactions  are
recorded  as necessary to permit preparation of financial statements in  accordance with generally
accepted accounting principles, and that receipts and expenditures of the company are being made  only
in accordance with authorizations of management and directors of the company; and  (3) provide

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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.

Iselin,  New Jersey
March 1, 2018

/s/ Ernst & Young LLP

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Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors  of
Amicus Therapeutics, Inc.

Opinion on the Financial Statements

We  have audited the accompanying consolidated balance sheets of Amicus Therapeutics, Inc.  (the

Company) as of December 31, 2017 and 2016, and  the related consolidated  statements of operations,
comprehensive loss, changes in stockholders’ equity and cash  flows for each  of the three years in the
period ended December 31, 2017, and the related notes  (collectively  referred to as the ‘‘financial
statements’’). In our opinion, the financial  statements present fairly, in all material respects, the
consolidated financial position of Amicus  Therapeutics, Inc. at December  31, 2017 and 2016, and the
consolidated results of its operations and  its cash  flows  for  each  of the three years in the period ended
December 31, 2017 in conformity with  U.S.  generally accepted accounting  principles.

We  also have audited, in accordance  with the standards of  the Public Company Accounting
Oversight Board (United States) (PCAOB), the  Company’s internal control over financial reporting  as
of December 31, 2017, based on criteria established in Internal  Control — Integrated  Framework
issued by the Committee of Sponsoring  Organizations of the Treadway Commission (2013 framework)
and our report dated March 1, 2018  expressed  an unqualified  upon thereon.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our  responsibility
is to express an opinion on these financial  statements  based on  our audits. We are a  public accounting
firm registered with the PCAOB and are required to be independent  with respect  to  the Company in
accordance with the U.S. federal securities laws and the applicable rules and  regulations of the
Securities and Exchange Commission  and  the PCAOB.

We  conducted our audits in accordance with the standards  of  the PCAOB. Those  standards require

that we plan and perform the audit to  obtain reasonable assurance  about whether  the financial
statements are free of material misstatement,  whether due to error of fraud. Our audits included
performing procedures to assess the risks of material misstatement  of  the financial statements, whether
due to error of fraud, and performing procedures that respond to those risks.  Such  procedures  included
examining, on a test basis, evidence regarding the  amounts and  disclosures  in the financial statements.
Our audits also include evaluating the accounting  principles used and significant estimates  made by
management, as well as evaluating the  overall  presentation of the financial statements. We believe  that
our  audits provide  a reasonable basis  for  our  opinion.

We  have served as the Company’s auditor since  2003.

Iselin,  New Jersey
March 1, 2018

/s/ Ernst & Young LLP

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Amicus Therapeutics, Inc.

Consolidated Balance Sheets
(in thousands, except share and per share amounts)

Assets
Current assets:
Cash and  cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Investments in marketable securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accounts receivable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prepaid expenses and other current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

Total current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Property and equipment, less  accumulated  depreciation of $12,515 and  $12,495 at
December 31, 2017 and  2016, respectively . . . . . . . . . . . . . . . . . . . . . . . . . . .
In-process research &  development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other non-current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

December 31,

2017

2016

49,060
309,502
9,464
4,623
19,316

391,965

9,062
23,000
197,797
5,200

$ 187,026
143,325
1,304
3,416
4,993

340,064

9,816
486,700
197,797
2,468

Total Assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

627,024

$1,036,845

Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable, accrued expenses,  and  other  current liabilities . . . . . . . . . . . . .
Deferred reimbursements, current portion . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contingent consideration payable, current  portion . . . . . . . . . . . . . . . . . . . . . . .

$

Total current liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred reimbursements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convertible notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contingent consideration payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred income  taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other non-current liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Commitments and contingencies
Stockholders’ equity:
Common stock, $.01  par value, 250,000,000  shares  authorized,  166,989,790 shares
issued and outstanding  at December  31,  2017  Common stock,  $.01 par value,
250,000,000 shares authorized,  142,691,986  shares  issued  and outstanding  at
December 31, 2016 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Additional paid-in capital
Accumulated other comprehensive  loss:
Foreign currency  translation  adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unrealized gain/ (loss) on available-for  securities . . . . . . . . . . . . . . . . . . . . . . . .
Warrants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accumulated deficit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

53,890
7,750
8,400

70,040
14,156
164,167
17,000
6,465
2,346

$

41,008
13,850
56,101

110,959
21,906
154,464
213,621
173,771
1,973

1,721
1,400,758

1,480
1,120,156

(1,659)
(436)
16,076
(1,063,610)

1,945
102
16,076
(779,608)

Total stockholders’ equity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

352,850

360,151

Total Liabilities and  Stockholders’  Equity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

627,024

$1,036,845

See accompanying notes to consolidated financial statements

-98-

Amicus Therapeutics, Inc.

Consolidated Statements of Operations
(in thousands, except share and per share amounts)

Years Ended December 31,

2017

2016

2015

Revenue:
Net Product Sales . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of goods sold . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Gross  Profit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Expenses:
Research and development . . . . . . . . . . . . . . . . . . . . . . .
Selling, general and administrative . . . . . . . . . . . . . . . . .
Changes in fair value of contingent consideration  payable
Loss on impairment of assets . . . . . . . . . . . . . . . . . . . . .
Restructuring charges . . . . . . . . . . . . . . . . . . . . . . . . . . .
Depreciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total operating expenses . . . . . . . . . . . . . . . . . . . . . . . .
Loss from operations . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other income (expenses):
Interest income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss on extinguishment of debt
. . . . . . . . . . . . . . . . . . .
Other income (expense) . . . . . . . . . . . . . . . . . . . . . . . . .

Loss before income tax benefit . . . . . . . . . . . . . . . . . . . .
Income tax benefit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net loss attributable to common stockholders . . . . . . . . .

Net loss attributable to common stockholders per

common share — basic and diluted . . . . . . . . . . . . . . .

Weighted-average common shares outstanding  — basic

$

36,930

$

4,958

$

36,930
6,236

30,694

149,310
88,671
(234,322)
465,427
—
3,593

472,679
(441,985)

4,096
(17,240)
—
6,008

4,958
833

4,125

104,793
71,151
6,760
—
69
3,242

—

—
—

—

76,943
47,269
4,377
—
15
1,833

186,015
(181,890)

130,437
(130,437)

1,602
(5,398)
(13,302)
(4,793)

929
(1,578)
(952)
(80)

(449,121)
165,119
(284,002) $

(203,781)
3,739
(200,042) $

(132,118)
—
(132,118)

(1.85) $

(1.49) $

(1.20)

$

$

and diluted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

153,355,144

134,401,588

109,923,815

See accompanying notes to consolidated financial statements

-99-

Amicus Therapeutics, Inc.

Consolidated Statements of Comprehensive Loss
(in thousands, except share and per share amounts)

Years Ended December 31,

2017

2016

2015

Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$(284,002) $(200,042) $(132,118)

Other comprehensive gain/ (loss):

Foreign currency translation adjustment
. . . . . . . . . . . . . . . . . .
Unrealized (loss)/ gain on available-for-sale  securities . . . . . . . . .

Other comprehensive (loss)/ income . . . . . . . . . . . . . . . . . . . . . . .

(3,604)
(538)

(4,142)

1,945
217

2,162

—
17

17

Comprehensive loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$(288,144) $(197,880) $(132,101)

-100-

Amicus Therapeutics, Inc.

Consolidated Statements of Changes in  Stockholders’  Equity
(in thousands, except share amounts)

Common Stock

Shares

Amount

Additional
Paid-In
Capital Warrants Gain/(Loss)

Other

Comprehensive Accumulated Stockholders’
Deficit

Equity

Total

Balance  at  December 31, 2014 . .

95,556,277 $1,015 $ 568,743 $ —

$ (132)

$ (447,448)

$ 122,178

Stock  issued from  exercise  of

stock options, net

. . . . . . . . .

2,070,300

Stock  issued for Scioderm

acquisition . . . . . . . . . . . . . .

5,921,771

Stock  issued for Callidus

acquisition . . . . . . . . . . . . . .
Stock  issued from  financing . . . .
Stock  issued from  exercise  of

warrants . . . . . . . . . . . . . . . .
Restricted stock vesting . . . . . . .
Warrants issued in  debt  financing .
Stock-based compensation . . . . .
Unrealized  holding loss on

available-for-sale securities

. . .
Net loss . . . . . . . . . . . . . . . . .

25,762
19,528,302

1,600,000
324,622
—
—

—
—

21

59

—
195

16
—
—
—

—
—

11,165

82,787

—
242,847

—

—

—
—

3,984
(2,044)

—
—
— 8,755
—

9,972

—
—

—
—

—

—

—
—

—
—
—
—

17
—

—

—

—
—

—
—
—
—

11,186

82,846

—
243,042

4,000
(2,044)
8,755
9,972

—
(132,118)

17
(132,118)

Balance  at  December 31, 2015 . . 125,027,034 $1,306 $ 917,454 $ 8,755
Stock  issued from  exercise  of

$ (115)

$ (579,566)

$ 347,834

stock options, net
Stock  issued from  ATM

. . . . . . . . .

723,102

7

3,029

transactions . . . . . . . . . . . . .

14,989,027

150

96,918

Stock  issued for MiaMed

acquisition . . . . . . . . . . . . . .
Restricted stock tax vesting . . . . .
Stock  issued for  contingent

consideration . . . . . . . . . . . .
Receivable from investor . . . . . .
Warrants issued in debt financing .
Equity component of the

Convertible Notes issuance, net
of issuance costs  of $2,709 . . . .

Premium paid for  Capped  Call

Confirmations . . . . . . . . . . . .
Stock-based compensation . . . . .
Unrealized  holding  gain  on

available-for-sale securities
Foreign currency translation

. . .

adjustment . . . . . . . . . . . . . .
Net loss . . . . . . . . . . . . . . . . .

825,603
268,425

858,795
—
—

—

—

—

—
—

8
—

9
—
—

—

—

—

—
—

—

—

—
—

4,599
(1,282)

—
6,106
932
—
— 7,321

88,346

(13,450)
17,504

—

—
—

—

—
—

—

—
—

—

—

—
—

—
—
—

—

—

217

1,945
—

—

—

—
—

—
—
—

—

—

—

3,036

97,068

4,607
(1,282)

6,115
932
7,321

88,346

(13,450)
17,504

217

—
(200,042)

1,945
(200,042)

Balance  at  December 31, 2016 . . 142,691,986 $1,480 $1,120,156 $16,076
Stock  issued from  exercise  of

$ 2,047

$ (779,608)

$ 360,151

stock options, net

. . . . . . . . .
Stock  issued from equity financing
Restricted stock tax vesting . . . . .
Stock-based compensation . . . . .
Unrealized  holding  gain  on

available-for-sale securities
Foreign currency translation

. . .

adjustment . . . . . . . . . . . . . .
Net loss . . . . . . . . . . . . . . . . .

2,878,681
21,122,449
296,674
—

—

—
—

29
212
—
—

—

—
—

16,272
242,825
(1,596)
23,101

—

—
—

—
—
—
—

—

—
—

—
—
—
—

(538)

(3,604)
—

—
—
—
—

—

16,301
243,037
(1,596)
23,101

(538)

—
(284,002)

(3,604)
(284,002)

Balance  at  December 31, 2017 . . 166,989,790 $1,721 $1,400,758 $16,076

$(2,095)

$(1,063,610)

$ 352,850

-101-

Amicus Therapeutics, Inc.

Consolidated Statements of Cash Flows
(in thousands)

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Non-cash interest expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Depreciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stock-based compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Restructuring charges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Change in  fair value  of derivative liability . . . . . . . . . . . . . . . . . . . . . . . . . . .
Non-cash changes in the fair value  of contingent consideration payable . . . . . . .
Charges to research expense  for stock  issued  in asset acquisition . . . . . . . . . . . .
Loss on extinguishment of debt
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign currency remeasurement (gain)  loss . . . . . . . . . . . . . . . . . . . . . . . . .
Non-cash deferred taxes and other tax  benefits . . . . . . . . . . . . . . . . . . . . . . .
(Gain)  Loss on disposal of assets
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Impairment  of IPR&D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Changes  in operating assets and liabilities:

Accounts receivable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prepaid  expenses and other current assets . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other non-current  assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Account payable and accrued expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Non-current  liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred reimbursements

Years Ended December 31,

2017

2016

2015

$(284,002)

$(200,042)

$(132,118)

9,703
3,593
23,101
—
(265)
(234,322)
—
—
(5,620)
(167,305)
(8)
465,427

(7,725)
(897)
(15,329)
(2,519)
12,563
720
(12,600)

2,689
3,242
17,504
69
265
6,760
4,607
13,302
3,660
(3,742)
17
—

(1,419)
(3,651)
(394)
(1,357)
7,131
825
—

492
1,833
9,972
15
—
4,377
—
952
—
—
—
—

—
—
308
(666)
15,467
93
(864)

Net cash used in operating  activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(215,485)

(150,534)

(100,139)

Investing  activities
Sale and  redemption of  marketable securities . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchases of marketable securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquisitions, net of  cash acquired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchases of property and  equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

323,753
(490,468)
—
(4,526)

221,374
(219,932)

290,129
(289,595)
— (141,060)
(4,817)

(5,951)

Net cash used in investing activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(171,241)

(4,509)

(145,343)

Financing  activities
Proceeds  from issuance  of common stock  and  warrants, net of issuance costs . . . . .
Payments  of  secured  loan agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Payment of capital leases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchase  of  vested  restricted stock units . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds  from exercise of stock options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds  from exercise of warrants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Payment of contingent  consideration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds  from issuance  of convertible senior  notes, net of issuance costs . . . . . . . .
Premiums paid for Capped Call Confirmations . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds  from secured loan agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

243,037
—
(308)
(1,596)
16,301
—
(10,000)
—
—
—

97,068
(80,000)
(193)
(1,282)
3,036
—
(5,000)
242,536
(13,450)
30,000

243,042
(15,291)
—
(2,044)
11,186
4,000
—
—
—
50,000

Net cash provided  by financing activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

247,434

272,715

290,893

Effect  of exchange  rate changes on cash and  cash equivalents . . . . . . . . . . . . . . .

1,326

(131)

Net  (decrease)/ increase in cash and  cash equivalents . . . . . . . . . . . . . . . . . . . .
Cash  and cash equivalents at beginning  of  year/  period . . . . . . . . . . . . . . . . . . . .

(137,966)
187,026

117,541
69,485

—

45,411
24,074

Cash and cash equivalents  at end of year/period . . . . . . . . . . . . . . . . . . . . . . . .

$ 49,060

$ 187,026

$ 69,485

Supplemental disclosures of cash flow  information
Cash  paid during the period for interest
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contingent consideration paid  in  shares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Capital  expenditures funded by  capital  lease borrowings . . . . . . . . . . . . . . . . . . .

$
$
$

7,424

$
— $
— $

2,990
6,115
944

$
$
$

605
—
—

-102-

Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements

1. Description of Business

Corporate Information, Status of Operations, and Management  Plans

Amicus Therapeutics, Inc. (the ‘‘Company’’) is  a global patient-centric  biotechnology company
engaged in the discovery, development  and commercialization of a diverse set of novel high-quality
treatments for patients living with rare metabolic diseases. The cornerstone of the  Amicus portfolio is
migalastat HCl, an oral precision medicine  for  people living with Fabry disease who have amenable
genetic mutations. Migalastat is currently  approved under the trade  name  GALAFOLD in the
European Union, with additional approvals granted and pending  in several  geographies. For Fabry
patients with non-amenable genetic mutations, a novel  proprietary enzyme replacement therapy
(‘‘ERT’’) co-formulated with migalastat  HCl is  currently  in late preclinical development.

The future value driver of the Amicus pipeline is ATB200/AT2221, a  novel, late-stage,  potential

best-in-class treatment paradigm for  Pompe disease. ATB200/AT2221 leverages our Chaperone-
Advanced Replacement Therapy (‘‘CHART(cid:4)’’) platform technology to develop novel ERT products for
Pompe disease, Fabry disease, and potentially other lysosomal storage  disorders (‘‘LSDs’’). The
Company is also investigating preclinical  and  discovery programs in other  rare  diseases  including cyclin-
dependent kinase-like 5 (‘‘CDKL5’’)  deficiency. The Company believes that its platform technologies
and its product pipeline uniquely position  them and drive their commitment  to  advancing and
expanding a robust pipeline of cutting-edge, first- or best-in-class  medicines for rare metabolic diseases.

The Company was previously developing SD-101 in  late-stage development  as a potential

first-to-market therapy for the chronic,  rare  connective tissue disorder Epidermolysis Bullosa (‘‘EB’’).
On September 13, 2017, the Company reported that top-line data  from the randomized, double-blind,
placebo-controlled Phase 3 clinical study (‘‘ESSENCE’’  or ‘‘SD-005’’) to assess the  efficacy  and safety
of the novel topical wound-healing agent  SD-101 did not meet the primary endpoints or  secondary
endpoints in participants with EB. The Company plans to further  analyze  and share the Phase  3
ESSENCE results with key stakeholders  in the EB  community  including  physicians,  patient
organizations and regulators. In the interim, in consultation with their  physicians, participants in  the
ongoing extension studies (SD-004 and -006) will have the  opportunity  to continue being treated  with
SD-101. Based on the top-line data,  the Company has  no current plans to  invest  in any  additional
clinical studies or commercial preparation  activities for  SD-101. This event led  the Company to assess
the carrying amount of the program’s  tangible and  intangible assets against their respective fair values.
Based on the assessment, the Company  recognized  a loss  on impairment  of  intangible assets in  the
amount of $463.7 million and $1.7 million  in fixed assets recorded within  Loss on Impairment  of Assets
within the Consolidated Statements of  Operations. Since  the study did  not meet  the primary and
secondary endpoints, the Company has concluded  that  they will not make the  potential  milestone
payments indicated in the Asset Purchase Agreement to the former  Scioderm holders. Accordingly, the
Company recognized a gain of $254.7  million in Changes in Fair Value of Contingent  Consideration
Payable in the third quarter of 2017, in order  to  decrease the liability to zero. The Company also
recognized $0.4 million in selling, general  and  administrative costs  and $8.1 million  in research and
development expenses related to the  wind-down of operations for  the  Phase 3  ESSENCE  study and
ongoing extension studies SD-004 and SD-006, as well as income  tax benefit  of  $164.7 million due to
the reduction of the deferred tax liability related to Scioderm IPR&D,  in the Consolidated Statements
of Operations in the third quarter of  2017. See  ‘‘— Note  4. Goodwill and IPR&D’’  for more  details.

On February 15, 2018, the Company announced the pricing of an underwritten offering of

19,354,839 shares of its common stock  at $15.50 per shares,  resulting in gross proceeds of
$300.0 million, before deducting underwriting  discounts and  commissions and offering expenses  payable

-103-

Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

by the Company. The offering closed on February 21, 2018 and the Company received net  proceeds of
$282.0 million from the Offering, after deducting underwriting discounts  and  commissions and offering
expenses  payable by the Company. J.P.  Morgan Securities  LLC and Goldman Sachs & Co. LLC were
acting as joint lead book-running managers, Cowen and Leerink Partners were acting as
co-book-running managers, and BofA Merrill  Lynch was  acting as lead  co-manager  for the  offering.
The Company expects to use the net proceeds of the offering for investment in the U.S. and
international commercial infrastructure for migalastat HCl, investment  in manufacturing  capabilities  for
ATB200, the continued clinical development of its product candidates, research and development
expenditures, clinical and pre-clinical trial expenditures, commercialization expenditures and  for other
general corporate purposes.

In July 2017, the Company entered into an  underwriting  agreement (‘‘the Underwriting

Agreement’’) with J.P. Morgan Securities LLC and Goldman Sachs & Co. LLC,  as representatives of
the several underwriters set forth on Schedule  1 thereto,  relating to an underwritten public offering of
the Company’s common stock (the ‘‘Offering’’). Under  the terms  of the Underwriting Agreement, the
Company issued and sold 21,122,449 shares  at  a  price to the  public of  $12.25 per share,  resulting in
gross proceeds of $258.8 million, before  deducting underwriting discounts and commissions and  offering
expenses  payable by the Company. The Offering closed  on July 18,  2017 and the Company received  net
proceeds from the Offering, after deducting  underwriting  discounts and commissions  and offering
expenses  payable by the Company of $243.0  million. See ‘‘— Note 9. Equity’’ for  more details.

In December 2016, the Company issued  $250 million  aggregate principal amount of 3.00%

unsecured Convertible Senior Notes due 2023 (the  ‘‘Convertible Notes’’), in a private offering to
qualified institutional buyers pursuant to Rule 144A under the  Securities  Act of 1933,  as amended (the
‘‘Securities Act’’). Interest is payable  semiannually on June 15  and December 15  of each year,
beginning on June 15, 2017. The Notes will mature on December 15, 2023, unless  earlier repurchased,
redeemed, or converted in accordance with  their terms. The Notes  are  convertible at  the option  of  the
holders, under certain circumstances and during certain  periods, into cash,  shares of the  Company’s
common stock, par value $0.01 per share (‘‘Common Stock’’), or a combination thereof. The net
proceeds from the issuance of the Convertible  Note offering were  $243.0 million, after deducting fees
and  estimated expenses payable by the Company. In  addition, the Company  used approximately
$13.5 million of the net proceeds from the issuance of  the Convertible Notes to pay the cost of the
capped call transactions (‘‘Capped Call Confirmations’’) that the Company entered into in  connection
with the issuance of the Convertible Notes. For  additional information,  see ‘‘— Note 11. Debt
Instruments and Related Party Transactions.’’

In July 2016, the Company expanded its biologics  pipeline with a new preclinical program for
CDKL5 deficiency, a rare and devastating  genetic neurological disease for which there  is no currently
approved treatment. The Company has obtained the  rights and related intellectual property to a
preclinical CDKL5 program through its acquisition of MiaMed, Inc. (‘‘MiaMed’’).  The  aggregate value
of the deal was approximately $89.5 million, which included  an upfront payment of $6.5  million and
Company stock, cash and potential milestones of up  to  $83.0  million. For additional information, see
‘‘— Note 3. Acquisitions’’.

Beginning in April 2016 and through July  2016, the  Company sold 15.0 million shares of  Common

Stock under an at-the-market (‘‘ATM’’) equity program with  Cowen and Company, LLC (‘‘Cowen’’)
acting as sales agent. Cowen was compensated at a fixed commission  rate  up to 3.0%. The  ATM  sales
agreement resulted in net proceeds of $97.1 million,  after Cowen’s commission  of  $2.7 million and
other  expenses of $0.2 million. The Company  has completed all  sales  under the ATM equity  program.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

The Company had an accumulated deficit  of approximately $1.1 billion at December 31,  2017 and

anticipates incurring losses through the fiscal  year ending December 31, 2018 and  beyond. The
Company has been able to fund its operating losses to date through  stock offering, debt issuances, and
payments from partners during the terms  of  the collaboration agreements and other financing
arrangements.

The current cash position, including proceeds from  the recent equity offering and expected
Galafold revenues, is sufficient to fund  ongoing Fabry and Pompe program operations into at  least
2021. Potential future business development collaborations,  pipeline  expansion, and investment in
biologics manufacturing capabilities could  impact the Company’s future capital requirements.

2. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying consolidated financial statements have been prepared in accordance with U.S.
generally accepted accounting principles  (‘‘U.S.  GAAP’’) and include all adjustments necessary for the
fair presentation of the Company’s financial position for  the periods  presented.

Consolidation

The consolidated financial statements include the accounts of the Company and its subsidiaries.

Intercompany accounts and transactions are eliminated  in consolidation.

Foreign Currency Transactions

The functional currency for most of  the Company’s foreign subsidiaries is  their local currency. For

non-U.S.  subsidiaries that transact in a functional currency other than the U.S. dollar, assets  and
liabilities are translated at current rates of exchange at the balance sheet date.  Income and expense
items are translated at the average foreign  exchange rates for the period. Adjustments resulting from
the translation of the financial statements  of the Company’s foreign operations into U.S. dollars are
excluded from the determination of net income and are recorded  in accumulated other comprehensive
income, a separate component of equity.

Use of Estimates

The preparation of financial statements  in  conformity with  U.S. GAAP  requires management to
make estimates and assumptions that affect the reported amounts of assets and liabilities,  the disclosure
of contingent assets and liabilities at the date of the  financial statements, and  the reported amounts of
revenues and expenses during the reporting  periods. Actual results  could differ  from those estimates.

Cash, Money Market Funds, and Marketable  Securities

The Company considers all highly liquid investments purchased with  a maturity of three  months or

less  at the date of acquisition, to be cash  equivalents.

Marketable securities consist of fixed  income  investments with a maturity  of greater  than three
months and other highly liquid investments that  can be readily purchased or sold  using established
markets. These investments are classified as available-for-sale and are reported at  fair value on the
Company’s balance sheet. Unrealized  holding gains and  losses are reported within comprehensive
income/ (loss) in the statements of comprehensive loss. Fair value is based  on available market
information including quoted market prices, broker  or dealer quotations  or other observable inputs. See

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

‘‘— Note 5. Cash, Money Market Funds and Marketable Securities’’,  for a  summary  of
available-for-sale securities as of December 31,  2017 and 2016.

Concentration of Credit Risk

The Company’s financial instruments that  are  exposed  to  concentration  of credit  risk consist
primarily  of cash and cash equivalents and  marketable securities. The  Company maintains its cash and
cash equivalents in bank accounts, which,  at times, exceed federally insured limits. The Company
invests its marketable securities in high-quality commercial financial instruments. The Company has not
recognized any losses from credit risks on such accounts  during any of the periods presented. The
Company believes it is not exposed to significant credit risk  on  cash and cash equivalents  or its
marketable securities.

The Company is subject to credit risk from its accounts receivable  related to its product sales  of

GALAFOLD. The Company’s accounts receivable  at December  31, 2017 have  arisen from product
sales in the EU. The Company will periodically assess  the financial strength of its customers to
establish allowances for anticipated losses, if any. For accounts receivable that have arisen  from named
patient sales, the payment terms are predetermined and the Company evaluates the  creditworthiness of
each customer on a regular basis. To date, the Company  has not incurred  any credit losses.

Property and Equipment

Property and equipment are stated at  cost, less  accumulated  depreciation. Depreciation is

calculated over the estimated useful lives of the respective  assets, which  range from three  to  five  years,
or the lesser of the related initial term of the lease or useful life for leasehold improvements.

The initial cost of property and equipment consists of its purchase price and any directly
attributable costs of bringing the asset to its working condition and location for its intended use.
Expenditures incurred after the fixed assets have been put into operation, such as repairs and
maintenance, are charged to income in the period in  which the  costs are  incurred. Major replacements,
improvements and additions are capitalized in  accordance with  Company policy.

Revenue Recognition

The Company recognizes revenue when  amounts are realized  or realizable and earned,  which is
typically  upon receipt by the customer.  Revenue is  considered  realizable and earned when persuasive
evidence an arrangement exists, title to  product and  associated risk of loss has passed to the  customer,
the price is fixed or determinable, collection  of the  amounts due  are reasonably assured and the
Company has no further performance  obligations.

Net Product Sales

The Company’s net product sales consist solely of sales of GALAFOLD for the treatment  of Fabry
disease in the EU. The Company has recorded revenue on sales where  GALAFOLD is  available  either
on a commercial basis or through a reimbursed early  access  program. Orders for GALAFOLD  are
generally  received from pharmacies and  the ultimate payor is  typically a government authority.

The Company records revenue net of estimated third party discounts and rebates. Allowances are

recorded as a reduction of revenue at the  time revenues from product sales are recognized.  These
allowances are adjusted to reflect known  changes  in factors  and  may  impact such allowances in the
quarter those changes are known.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

Inventories and Cost of Goods Sold

Prior to  regulatory approval of GALAFOLD, the  Company expensed all manufacturing costs
related to GALAFOLD as research and development expense. Upon regulatory  approval, the Company
began capitalizing costs related to the purchase and manufacture of GALAFOLD.

Inventories are stated at the lower of  cost and net  realizable value, determined by the first-in,

first-out method. Inventories are reviewed periodically to identify slow-moving or obsolete inventory
based on  projected sales activity as well  as product shelf-life.  In  evaluating the recoverability  of
inventories produced, the probability that  revenue will be obtained from the future sale  of the related
inventory is considered and inventory value is written down for inventory  quantities in excess of
expected requirements. Expired inventory is disposed of  and the related costs are recognized  as cost of
product sales in the consolidated statements of operations.

Cost of goods sold includes the cost  of  inventory sold, manufacturing and supply chain costs,
product shipping and handling costs,  provisions for excess and  obsolete inventory, as  well as royalties
payable. A portion of the inventory available for sale  was expensed as research and development costs
prior to regulatory approval and as such the cost  of  goods sold and  related  gross margins  are not
necessarily indicative of future cost of goods sold and gross margin.

Fair Value Measurements

The Company records certain asset and  liability  balances under the fair value  measurements as

defined by the FASB guidance. Current  FASB  fair value guidance emphasizes that fair value  is a
market-based measurement, not an entity-specific measurement. Therefore, a fair  value measurement
should be determined based on the assumptions that market participants would use in pricing the asset
or liability. As a basis for considering  market  participant assumptions in fair value measurements,
current  FASB guidance establishes a  fair value  hierarchy that distinguishes between market participant
assumptions based on market data obtained  from sources independent of  the reporting entity
(observable inputs that are classified within Levels 1  and 2 of the  hierarchy) and the reporting  entity’s
own assumptions that market participants assumptions  would  use in pricing  assets or liabilities
(unobservable inputs classified within Level 3  of  the hierarchy).

Level 1 inputs utilize quoted prices (unadjusted) in active markets for  identical  assets or liabilities
that the Company has the ability to access  at  measurement date. Level 2  inputs are inputs other than
quoted prices included in Level 1 that are observable for  the asset or liability, either directly or
indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets,
as well as inputs that are observable for the asset or liability (other  than  quoted prices), such as interest
rates, foreign exchange rates, and yield curves that are observable  at  commonly quoted intervals.
Level 3 inputs are unobservable inputs  for the asset or liability, which  is typically based on an  entity’s
own assumptions, as there is little, if  any, related market activity.  In instances where the determination
of the fair value measurement is based on inputs from different  levels of  the fair value hierarchy, the
level in the fair value hierarchy within which the entire fair value  measurement falls is based on the
lowest level input that is significant to the fair value  measurement in its entirety. The Company’s
assessment of the significance of a particular  input  to  the fair  value measurement  in its entirety
requires judgment, and considers factors specific to the asset or  liability.

Contingent Liabilities

On an ongoing basis, the Company may be involved  in various claims, and legal proceedings.  On a

quarterly basis, the Company reviews the status of each significant matter  and assesses its potential

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

financial exposure. If the potential loss  from  any claim, asserted  or unasserted,  or legal proceeding is
considered probable and the amount can be reasonably estimated,  the Company will accrue a liability
for the estimated loss. Because of uncertainties related to claims and  litigation, accruals  will be based
on the Company’s best estimates based on available information. On a periodic basis, as additional
information becomes available, or based on specific events such as the  outcome of litigation or
settlement of claims, the Company may reassess  the potential liability related  to  these  matters and may
revise these estimates, which could result in material adverse adjustments  to  the Company’s  operating
results.

Research  and Development Costs

Research and development costs are expensed as  incurred.  Research and  development expense
consists  primarily of costs related to personnel, including salaries and other personnel related expenses,
consulting fees and the cost of facilities  and support  services used in drug development.  Assets acquired
that are used for research and development  and  have no future alternative use  are expensed as
in-process research and development.

Interest  Income and Interest Expense

Interest income consists of interest earned on the Company’s cash  and  cash equivalents and

marketable securities. Interest expense  consists of interest incurred  on  debt and capital leases.

Income Taxes

The Company accounts for income taxes  under  the liability method.  Under this method  deferred
income tax liabilities and assets are determined  based on the difference between the  financial  statement
carrying amounts and tax basis of assets  and liabilities and for operating losses and tax credit  carry
forwards, using enacted tax rates in effect in the years in which the differences are expected to reverse.
A valuation allowance is recorded if  it is  ‘‘more likely  than not’’ that a portion or all of  a deferred tax
asset will not be realized.

Other Comprehensive Income/ (Loss)

Components of other comprehensive  income/  (loss)  include unrealized  gains and losses on
available-for-sale securities and gain/ (loss) on foreign currency  transactions, and  are included in the
statements of comprehensive loss.

Leases

In the ordinary course of business, the Company enters into lease agreements  for office space  as
well as leases for certain property and equipment. The leases  have varying terms and expirations and
have  provisions to extend or renew the  lease agreement, among other terms and conditions, as
negotiated. Once the agreement is executed, the lease  is assessed to determine whether  the lease
qualifies as a capital or operating lease.

When a non-cancelable operating lease includes any fixed escalation clauses and lease incentives

for rent holidays or build-out contributions, rent expense is recognized  on  a straight-line  basis over  the
initial term of the lease. The excess between the average rental  amount charged  to  expense and
amounts payable under the lease is recorded  in accrued expenses.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

Nonqualified Cash Deferral Plan

The Company’s Cash Deferral Plan (the ‘‘Deferral Plan’’), provides  certain key employees  and

members of the Board of Directors as selected by  the Compensation Committee of the  Board of
Directors of the Company (the ‘‘Compensation Committee’’), with an  opportunity to defer the receipt
of such  participant’s base salary, bonus  and director’s  fees, as  applicable. The Deferral Plan is intended
to be a nonqualified deferred compensation plan  that complies with  the provisions  of Section 409A  of
the Internal Revenue Code (the ‘‘Code’’). All  of  the investments held in the Deferral Plan are
classified as investments held-to-maturity  and  recorded at fair value  with changes  in the investments’
fair value recognized as earnings in the period they occur. The  corresponding liability for  the Deferral
Plan is included in other non-current  liability  in the  consolidated  balance  sheets.

Equity-based Compensation

At December 31, 2017, the Company  had three equity-based employee compensation plans,  which

are described more fully in ‘‘— Note  9. Stockholders’ Equity.’’  The  Company applies the fair value
method of measuring equity-based compensation, which requires a public entity to measure the  cost of
employee services received in exchange for  an award of equity instruments based on the grant-date fair
value of the award.

Loss per Common Share

The Company calculates net loss per share as a measurement of the  Company’s performance while
giving effect to all dilutive potential common shares that were outstanding during the  reporting period.
The Company had a net loss for all periods presented; accordingly, the inclusion of common stock
options, unvested RSUs and warrants would be anti-dilutive.  Therefore,  the weighted average shares
used to calculate both basic and diluted earnings per share are the same.  See ‘‘—  Note 17.  Earnings
per Share’’ for further discussion on net loss  per  share.

Segment Information

The Company currently operates in one business  segment focused on the discovery, development
and  commercialization of advanced therapies to treat a range  of  devastating rare and orphan diseases.
The Company is not organized by market and is managed and operated as one business. A single
management team reports to the chief operating decision maker  who comprehensively manages the
entire business. The Company does not operate any separate lines of business or separate business
entities with respect to its products. Accordingly, the Company does not accumulate  discrete financial
information with respect to separate service lines and  does not  have separately reportable  segments.

Business Combinations

The Company assigns fair value to the tangible and intangible assets acquired and liabilities
assumed based upon their estimated fair values on the  acquisition  date from  acquired  businesses. The
purchase price allocation process requires management to make  significant  estimates and assumptions,
especially at the acquisition date with  respect  to  intangible assets and in-process  research  and
development (‘‘IPR&D’’). In connection with  the purchase price allocations for acquisitions, the
Company estimates the fair value of  contingent payments utilizing a probability-based income approach
inclusive of an estimated discount rate.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

Contingent Consideration Payable

The Company determines the fair value of contingent acquisition consideration payable on  the

acquisition date using a probability-based  income  approach utilizing an  appropriate  discount rate.
Contingent acquisition consideration payable is  shown as a non-current liability on the Company’s
consolidated balance sheets. The fair value  of the  contingent consideration payable will  be  determined
each period end and the resulting change  will be recorded on  the consolidated statements of
operations.

Intangible Assets and Goodwill

The Company records goodwill in a business combination when the total consideration exceeds the

fair value of the net tangible and identifiable intangible assets acquired. Purchased  IPR&D is
accounted for as an indefinite lived intangible asset until the underlying project is  completed, at which
point the intangible asset will be accounted for  as a  definite lived intangible asset, or abandoned, at
which point the intangible asset will be written off or partially  impaired.  Goodwill and indefinite lived
intangible assets are assessed annually for  impairment and whenever  events or circumstances  indicate
that the carrying amount of an asset may not  be  recoverable. If it is  determined that the full  carrying
amount of an asset is not recoverable, an  impairment loss is recorded in  the amount by which the
carrying amount of the asset exceeds its  fair value.

Recent Accounting Pronouncements

In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging  (Topic 815): Targeted
Improvements to Accounting for Hedging Activities.  The  amendments in this Update better align an
entity’s risk management activities and  financial reporting for hedging relationships through changes to
both the designation and measurement guidance for qualifying hedging  relationships and the
presentation of hedge results. To meet  that objective, the amendments expand and  refine hedge
accounting for both nonfinancial and financial risk  components and align the recognition and
presentation of the effects of the hedging instrument and the  hedged item  in the financial statements.
The amendments in this Update also  make certain targeted improvements to simplify the application of
hedge accounting guidance and ease  the administrative  burden of hedge documentation requirements
and  assessing hedge effectiveness. For public business  entities,  the  amendment is effective for fiscal
years beginning after December 15, 2018, and interim periods  within those fiscal years. Early adoption,
including adoption in an interim period, is permitted. The Company is currently assessing the impact
that this standard will have on its consolidated financial statements.

In July 2017, the FASB issued ASU 2017-11, Earnings Per  Share (Topic 260); Distinguishing
Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815):  (Part  I)  Accounting for Certain
Financial Instruments with Down Round Features, (Part II)  Replacement of the Indefinite Deferral for
Mandatorily Redeemable Financial Instruments of Certain Nonpublic  Entities and Certain Mandatorily
Redeemable Noncontrolling Interests with a Scope Exception. Part I  of  this Update addresses the
complexity of accounting for certain financial instruments with down round features. Down round
features are features of certain equity-linked  instruments (or embedded features)  that  result in  the
strike price being reduced on the basis of the pricing of future  equity offerings.  When  determining
whether certain financial instruments should be classified as liabilities or equity instruments, a  down
round feature no longer precludes equity  classification  when assessing whether the  instrument is
indexed to an entity’s own stock. Part II  of  this  Update addresses the difficulty of  navigating  Topic 480,
Distinguishing Liabilities from Equity, because of  the existence  of  extensive pending content in the
FASB Accounting Standards Codification(cid:4). For public business entities, the amendments in  Part I of

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

this Update are effective for fiscal years, and years, beginning after December 15, 2018. Early adoption
is permitted for all entities, including adoption  in an interim period. The Company  is currently
assessing the impact that this standard will  have on  its  consolidated financial statements.

In May 2017, the FASB issued ASU 2017-09, Compensation — Stock Compensation  (Topic  718):
Scope of Modification Accounting. The amendments provide guidance on determining which changes to
the terms and conditions of share-based payment awards  require an entity to apply modification
accounting under Topic 718 Compensation — Stock Compensation. An entity  should account  for the
effects of a modification unless all the following are met: 1. The  fair value (or calculated value or
intrinsic value, if such an alternative  measurement  method is  used) of the  modified award is the  same
as the fair value (or calculated value or intrinsic value, if such  an alternative measurement  method is
used) of the original award immediately before the  original  award is modified.  If the modification does
not affect any of the inputs to the valuation technique that the entity uses to value  the award, the
entity is not required to estimate the value immediately before and  after the  modification.  2. The
vesting conditions of the modified award are the same as  the vesting conditions of  the original award
immediately before the original award is modified. 3.  The classification  of  the modified award as an
equity instrument or a liability instrument is  the same as  the classification  of  the original award
immediately before the original award is modified. The ASU is effective for all entities  for annual
periods, including interim periods within those  annual periods, beginning after December 15, 2017.
Early adoption is permitted, including adoption in any interim period.  The Company  is currently
assessing the impact that this standard will  have on  its  consolidated financial statements.

In March 2017, the FASB issued ASU 2017-08,  Receivables — Nonrefundable Fees and Other Costs

(Subtopic 310-20), Premium Amortization on Purchased Callable  Debt Securities. The amendments
shorten the amortization period for certain callable debt securities  held  at  a premium. Specifically,  the
amendments require the premium to be amortized  to  the earliest call  date. The amendments  do  not
require an accounting change for securities held  at  a  discount; the discount continues to be amortized
to maturity. The ASU is effective for  public business  entities  for fiscal years, and interim  periods within
those fiscal years, beginning after December  15, 2018. For other  entities,  the amendments are effective
for fiscal years beginning after December 15, 2019, and interim periods  within fiscal years beginning
after December 15, 2020. Early adoption is permitted,  including adoption in an interim period. If  an
entity early adopts in an interim period, any adjustments should  be  reflected as  of  the beginning of the
fiscal year that includes that interim  period. The amendments should be applied on a modified
retrospective basis, with a cumulative-effect adjustment  directly to retained earnings  as of the beginning
of the period of adoption. The Company is currently assessing the  impact  that  this standard  will  have
on its consolidated financial statements.

In January 2017, the FASB issued ASU 2017-04,  Intangibles —  Goodwill and Other (Topic 350):

Simplifying the Test for Goodwill Impairment. To simplify the  subsequent measurement of goodwill,
ASU  2017-04 eliminates Step 2 from the goodwill impairment test.  The annual,  or interim, goodwill
impairment test is performed by comparing the  fair value of a reporting unit with its  carrying amount.
An impairment charge should be recognized for  the amount by which the  carrying amount exceeds the
reporting unit’s fair value; however, the loss recognized should  not exceed the  total  amount  of goodwill
allocated  to that reporting unit. In addition,  income tax effects from  any tax deductible goodwill on the
carrying amount of the reporting unit should be considered when  measuring the goodwill impairment
loss, if applicable. ASU 2017-04 also  eliminates the requirements for any  reporting unit with a zero  or
negative carrying amount to perform a qualitative assessment  and,  if it fails that qualitative test, to
perform Step 2 of the goodwill impairment  test. An entity still  has the option to perform the qualitative
assessment for a reporting unit to determine if the  quantitative impairment test is  necessary.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

ASU  2017-04 should be applied on a prospective  basis. The  nature of  and reason for  the change in
accounting principle should be disclosed upon transition. A public  business entity that is a  U.S. SEC
filer should adopt ASU 2017-04 for its annual or  any  interim goodwill impairment tests in fiscal years
beginning after December 15, 2019. Early adoption is  permitted for interim or annual goodwill
impairment tests performed on testing dates after  January 1, 2017.  The  Company is  currently assessing
the impact that this standard will have on its consolidated  financial  statements.

In January 2017, the FASB issued ASU 2017-01,  Business Combinations (Topic 805):  Clarifying the

Definition of a Business. This Accounting Standards Update  clarifies the definition of a business. The
amendments affect all companies and other reporting  organizations that  must determine  whether they
have  acquired or sold a business. The amendments in this Update are effective  for public companies
for annual periods beginning after December 15, 2017,  including interim periods within  those periods.
Early adoption is permitted under certain  circumstances. The amendments should be applied
prospectively as of the beginning of the period of adoption. The Company  is currently assessing the
impact  that this standard will have on its consolidated financial statements.

In October 2016, the FASB issued ASU  2016-16, Income Taxes  (Topic 740): Intra-Entity Transfers of

Assets Other Than Inventory. This Accounting Standards  Update requires an entity to recognize the
income tax consequences of an intra-entity  transfer of an asset other  than  inventory when the  transfer
occurs. The amendments eliminate the exception for an intra-entity transfer of an  asset other than
inventory. The amendments in this Update  are  effective for public business entities for annual  periods
beginning after December 15, 2017, including interim reporting periods within those annual  reporting
periods. Early adoption is permitted for all  entities in  the first interim period  if an  entity issues  interim
financial statements. The Company is currently assessing the impact that  this standard will have on its
consolidated financial statements and plans to adopt this ASU  in the first quarter of 2018 using a
modified retrospective approach with any adjustment, if any, to be recorded in  retained earnings as
January 1, 2018. The Company is completing the assessment of  the  impact,  if  any, of the  adoption of
this standard.

In March 2016, the FASB issued ASU 2016-09,  Compensation  — Stock  Compensation (Topic 718):
Improvements to Employee Share-Based Payment  Accounting.  The  amendments  are intended to improve
the accounting for employee share-based payments and affect all  organizations that issue share-based
payment awards to their employees. Several  aspects of  the accounting  for  share-based payment  award
transactions are simplified, including: (a) income tax  consequences; (b) classification of awards as  either
equity or liabilities; and (c) classification  on the statement of cash  flows. For public companies,  the
amendments are effective for annual  periods beginning after  December 15,  2016, and  interim periods
within those annual periods. Early adoption  is permitted for any  organization in  any interim or annual
period. The Company adopted ASU 2016-09  on  January 1, 2017.  The adoption resulted  in an increase
to the Company’s NOL and valuation allowance by  $4.0 million,  however there  was no impact on
Retained earnings and the classification of  excess  tax benefits on the  statement  of cash  flows for prior
periods have not been adjusted. In connection with  the adoption  of ASU  2016-9, the Company has
decided to continue its current policy and estimate forfeitures and  adjust  the estimate when it is likely
to change. This election will have no impact on the  Company’s consolidated financial statements

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic  842).  This update requires the

recognition of lease assets and lease  liabilities on the balance sheet for all lease obligations and
disclosing key information about leasing  arrangements. This update  requires the recognition of lease
assets and lease liabilities by lessees for those leases classified as  operating leases under previous
generally accepted accounting principles.  This update  will be effective for the Company for all annual
and interim periods beginning after December 15, 2018, including interim periods within those fiscal
years. Early application is permitted for  all  public business entities  and all nonpublic business entities
upon issuance. The Company is currently assessing the impact that this standard will have on  its
consolidated financial statements.

In January 2016, the FASB issued Accounting  Standards Update No. 2016-01, ‘‘Financial

Instruments — Overall: Recognition and Measurement of Financial Assets and Financial Liabilities’’
(ASU 2016-01). ASU 2016-01 changes accounting for equity  investments, financial liabilities under the
fair value option, and presentation and disclosure requirements for financial instruments. ASU 2016-01
does not apply to equity investments  in consolidated subsidiaries or those  accounted for  under the
equity method of accounting. In addition,  the FASB  clarified guidance  related to the valuation
allowance assessment when recognizing  deferred tax assets resulting from unrealized losses on
available-for-sale debt securities. Equity  investments with readily determinable fair values will be
measured at fair value with changes  in fair  value recognized in net income. Companies have the option
to either measure equity investments without readily determinable fair values at fair value or at cost
adjusted for changes in observable prices  minus  impairment. Companies that  elect  the fair value option
for financial liabilities must recognize changes in fair value related to instrument-specific credit risk in
other comprehensive income. Companies  must assess  valuation allowances for deferred tax assets
related to available-for-sale debt securities in  combination with their other deferred tax  assets.
ASU 2016-01 will be effective beginning  in the first  quarter of 2018. We will adopt this ASU in the first
quarter of 2018. We expect the implementation of  this standard to have  no impact on our Consolidated
Financial Statements and related disclosures, as  the Company does not have equity investments and
liabilities with credit risk and the guidance  relating to deferred tax assets is currently in  place at
Amicus even prior to the adoption of  the  ASU.

In November 2015, the FASB issued ASU  2015-17, Balance Sheet Classification of Deferred  Taxes.

ASU 2015-17 requiring companies to  classify  all deferred tax assets and liabilities as noncurrent on the
balance sheet instead of separating deferred taxes into current  and  noncurrent amounts. For public
business entities, the guidance is effective  for financial statements issued for annual periods  beginning
after 15 December 2016, and interim periods within those annual periods. The Company adopted  this
guidance as of January 1, 2017 and the  adoption did not have a material impact on its consolidated
financial statements.

In July 2015, the FASB issued ASU 2015-11, Inventory (Topic  330): Simplifying the Measurement of
Inventory, which requires an entity to measure in scope inventory at the lower  of cost and net realizable
value. Net realizable value is the estimated selling prices in the  ordinary  course of business, less
reasonably predictable costs of completion,  disposal, and transportation. The amendments  apply to
inventory that is measured using first-in,  first-out (FIFO)  or average  cost. The ASU is effective  for
public business entities for fiscal years beginning after December 15, 2016, including interim periods
within those fiscal years. A reporting entity should apply  the amendments prospectively with earlier
application permitted as of the beginning  of an  interim  or annual reporting period. The Company
adopted this guidance as of January 1, 2017 and the adoption  did not have any impact on  its
consolidated financial statements.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

In May 2014, FASB issued ASU 2014-09, Revenue  from Contracts with Customers which along with
amendments issued in 2015 and 2016, will replace substantially  all current US GAAP guidance on this
topic and eliminate industry-specific guidance. ASU 2014-09 also requires  additional disclosure  about
the nature, amount, timing and uncertainty of revenue  and cash flows arising from customer contracts,
including significant judgments and changes  in judgments and assets  recognized from costs incurred to
obtain or fulfill a contract. The guidance  permits two methods of adoption: full retrospective method
(retrospective application to each prior  reporting period  presented) or modified retrospective method
(retrospective application with the cumulative  effect of  initially applying the guidance recognized at the
date  of  initial application and providing  certain additional disclosures). The Company has elected to
adopt the new standard using the modified retrospective approach. ASU 2014-09 is effective for the
Company during the first quarter of 2018.

The Company’s implementation plan included a phased project plan, an understanding  of the new
standard and its requirements, assessment  of the  Company’s revenue streams and specific contracts in
the streams. Additionally, the Company continues  to  monitor modifications, clarifications and
interpretations issued by the FASB that  may impact its assessment. While the Company performed a
detailed review of representative contracts  and  assessed  the potential impacts the  standard may have on
previously reported revenues and future  revenues, the  Company is finalizing its assessment of the
adoption of the new standard.

Based on the adoption of the ASU 2014-09, the Company identified two revenue streams: sales to
distributors and pharmacies. The timing  of revenue recognition  and  treatment of contract costs remains
unchanged under the new standard. As such, the Company does not expect the adoption of
ASU 2014-09 to have a material impact on its consolidated financial statements.

The Company does expect the adoption of the new standard to impact  its financial reporting
disclosures and internal controls over  financial reporting. The Company has developed implementation
controls that allow the Company to properly  and timely adopt the new revenue accounting standard on
its  effective date.

3. Acquisitions

Acquisition of MiaMed, Inc.

In July 2016, the Company entered into an  Agreement and Plan of Merger (the ‘‘MiaMed
Agreement’’) with MiaMed, Inc., (‘‘MiaMed’’). MiaMed  is a pre-clinical biotechnology company
focused on developing protein replacement  therapy for CDKL5 and related diseases. Under the terms
of the MiaMed Agreement, the former  holders  of  MiaMed’s capital stock received an aggregate of
$6.5 million, comprised of (i) approximately $1.8 million  in cash (plus MiaMed’s cash and cash
equivalents at closing and less any of  MiaMed’s  unpaid  third-party  fees  and expenses related to the
transaction), and (ii) 825,603  shares of the Company’s  Common Stock. In addition, the Company also
agreed to pay up to an additional $83.0  million in connection with the achievement of certain  clinical,
regulatory and commercial milestones, for  a  potential aggregate deal  value of  $89.5 million. The
Company evaluated the transaction based on the guidance of Accounting  Standard Codification
(‘‘ASC’’) 805, Business Combinations and concluded  that it only acquired inputs and did not acquire any
processes. The Company will need to develop its own  processes in order to produce an output.
Therefore, the Company accounted for  the transaction as an asset acquisition and accordingly
$6.5 million was expensed to research  and  development.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

Acquisition of Scioderm, Inc.

In September 2015, the Company acquired Scioderm Inc., (‘‘Scioderm’’),  a privately-held
biopharmaceutical company focused on developing innovative therapies for treating the rare disease
EB. The acquisition potentially leveraged the  Scioderm development team’s EB expertise  with the
Company’s global clinical infrastructure to advance SD-101 toward regulatory approvals and the
Company’s commercial, patient advocacy,  and  medical affairs infrastructure  to  support a successful
global  launch. The acquisition of Scioderm was accounted for as a purchase of a  business  in accordance
with ASC 805 Business Combinations.

At the end of the first quarter of 2017, the Company achieved 100%  enrollment in the Phase 3
clinical study of SD-101 and the milestone  payment of $10 million due for this event, was paid in April
2017. On September 13, 2017, the Company reported that top-line data from  the randomized,  double-
blind, placebo-controlled Phase 3 clinical study (ESSENCE, SD-005)  to  assess the efficacy and safety of
the novel topical wound-healing agent SD-101  did not meet the primary endpoints  or secondary
endpoints in participants with EB. Based  on these top-line data, the Company has no current plans to
invest in any additional clinical studies or commercial  preparation activities for SD-101. For additional
information, see ‘‘— Note 1. Description of  Business.’’  The associated impairment of Scioderm IPR&D
is discussed in ‘‘— Note 4. Goodwill and Intangible Assets.’’

For additional information, see ‘‘— Note  4. Goodwill and Intangible Assets.’’

Acquisition of Callidus Biopharma, Inc.

In November 2013, the Company acquired  Callidus a  privately-held biologics company  focused on
developing best-in-class ERTs for LSDs  with  its lead ERT ATB200  for Pompe disease in late preclinical
development. The acquisition of the Callidus assets and technology complements Amicus’ CHART(cid:4)
platform for the development of next generation ERTs.

The fair value of the contingent acquisition consideration  payments was estimated by applying  a

probability-based income approach utilizing an appropriate discount rate. Key  assumptions  include
discount rate and various probability  factors. This estimation was based on  significant inputs that are
not observable in the market, referred  to  as Level 3  inputs. Some of the more  significant assumptions
used in the valuation include (i) the probability  and timing related to the achievement  of  certain
developmental milestones and (ii) and  the discount rate.  See ‘‘—  Note 10. Assets and Liabilities
Measured at Fair Value’’, for additional discussion regarding fair  value measurements of the  contingent
acquisition consideration payable. The  Company determined  the  fair value of the contingent
consideration to be $25.4 million at December 31, 2017, of  which $8.4 million is payable over the next
twelve months and $17.0 million is payable beyond the next twelve months, resulting in  an increase in
the contingent consideration payable  and  related expense  of $15.7 million  in the year ended
December 31, 2017. The expense is recorded in  the Consolidated Statement  of  Operations within the
changes in fair value of contingent consideration line item.

For further information, see ‘‘— Note 4.  Goodwill  and  Intangible Assets.’’

4. Goodwill and Intangible Assets

In connection with the acquisitions, the Company initially recognized IPR&D of  $486.7 million and

goodwill of $197.8 million. Intangible  assets related to IPR&D assets  are  considered to be indefinite-
lived until the completion or abandonment of the  associated research  and  development efforts. During
the period the assets are considered  indefinite-lived, they will not be amortized  but will be tested for

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

impairment on an annual basis and between  annual  tests if  the Company  becomes aware of any events
occurring or changes in circumstances that would indicate a reduction in the fair value  of  the IPR&D
assets below their respective carrying amounts.

Goodwill and intangible assets are assessed annually for impairment  on October 1 and whenever
events or circumstances indicate that  the carrying amount of an asset may not be recoverable.  If it  is
determined that the full carrying amount  of an  asset  is not recoverable, an impairment loss is  recorded
in the  amount by which the carrying amount of  the asset exceeds its fair value.  As discussed  in
‘‘— Note 1. Description of Business’’, in  September 2017, the  Company reported that top-line data
from the randomized, double-blind, placebo-controlled Phase 3  clinical  study (ESSENCE, SD-005)  to
assess the efficacy and safety of the novel topical wound-healing  agent SD-101 did  not  meet the
primary endpoints or secondary endpoints in participants with EB. This event led  to  an assessment  to
determine if an impairment had occurred for goodwill and IPR&D.  Based on tests for impairment, the
Company determined that IPR&D had been impaired, however goodwill was not impaired based  on
qualitative and market capitalization  tests performed. The loss  on impairment of  IPR&D is recorded
within Loss on Impairment of Assets within the Consolidated Statements of Operations.

The following table represents the changes in  IPR&D for  the year ended  December 31,  2017:

Balance at December 31, 2016 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Impairment in IPR&D related to Scioderm . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 486.7
(463.7)

Balance at December 31, 2017 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 23.0

(in millions)

The following table represents the changes in  Goodwill for the year ended  December 31,  2017:

Balance at December 31, 2016 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Change in goodwill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Balance at December 31, 2017 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(in millions)

$197.8
—

$197.8

5. Cash, Money Market Funds and Marketable  Securities

As of December 31, 2017, the Company held $49.1 million in cash and cash equivalents  and

$309.5 million of available-for-sale securities which are reported at  fair value on the Company’s
Consolidated Balance Sheets. Unrealized  gains and losses are reported  within accumulated other
comprehensive income/ (loss) in the statements of comprehensive loss.  If  a decline in the fair value of a
marketable security below the Company’s  cost  basis is  determined to be other than  temporary,  such
marketable security is written down to its  estimated  fair value as  a  new cost basis and  the amount of
the write-down is included in earnings  as an  impairment charge. To date, only temporary impairment
adjustments have been recorded.

The Company regularly invests excess operating  cash in deposits with major financial institutions,

money market funds, notes issued by the  U.S. government, as  well as  fixed income investments and
U.S. bond funds both of which can be readily purchased and  sold  using established markets. The
Company believes that the market risk arising  from its holdings  of these  financial instruments is
mitigated as many of these securities are either government backed or of the highest  credit rating.
Investments that have original maturities or  greater than  3 months but less than  1 year are classified as

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

short-term and investments with maturities that are greater than  1 year are classified  as long-term. As
of December 31, 2017, all the investments  were classified as short-term on the Company’s Consolidated
Balance Sheets.

The Company transacts business in various foreign  countries and therefore, is  subject to risk of
foreign currency exchange rate fluctuations. As  such,  in June 2016 the Company  entered into a forward
contract to economically hedge transactional exposure  associated with  commitments arising from  trade
accounts payable denominated in a currency other  than the functional currency of  the respective
operating entity. The Company does not  designate these forward contracts as hedging instruments
under applicable accounting guidance and, therefore, changes in  fair value are recorded  within other
income (expense) in the Consolidated  Statements of Operations, with the corresponding liability in
current  liabilities on the Consolidated Balance  Sheet. For the years ended  December 31, 2017 and
2016, we recognized a loss of $0.2 million and $0.3 million, respectively, related to the  foreign currency
forward contract not designated as hedging instruments in other expense in  the Consolidated
Statements of Operations. For the year ended  December  31,  2016, the  Company also  recognized a
corresponding liability of $0.3 million  as other current liability in the Consolidated Balance Sheets. As
the forward contract settled in June 2017, there  was  no liability for  the year  ended December 31, 2017.

Cash and available for sale securities consisted of the following as  of  December  31, 2017 and

December 31, 2016 (in thousands):

Cash balances . . . . . . . . . . . . . . . . . . . . . . . . . .
Corporate debt securities, current portion . . . . . .
Commercial paper . . . . . . . . . . . . . . . . . . . . . . .
Asset-backed securities . . . . . . . . . . . . . . . . . . .
Money market
. . . . . . . . . . . . . . . . . . . . . . . . .
Certificate of deposit . . . . . . . . . . . . . . . . . . . . .

Cost

$ 49,060
199,314
79,878
30,346
350
50

$358,998

Included in cash and cash equivalents . . . . . . . . .
Included in marketable securities . . . . . . . . . . . .

$ 49,060
309,938

Total cash and marketable securities . . . . . . . . . .

$358,998

As of December 31, 2017

Unrealized
Gain

Unrealized
Loss

Fair
Value

$—
1
—
—
—
—

$ 1

$—
1

$ 1

$ — $ 49,060
199,012
79,803
30,287
350
50

(303)
(75)
(59)
—
—

$(437)

$358,562

$ — $ 49,060
309,502

(437)

$(437)

$358,562

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

Cash balances . . . . . . . . . . . . . . . . . . . . . . . . . .
Corporate debt securities, current portion . . . . . .
Commercial paper . . . . . . . . . . . . . . . . . . . . . . .
Money market
. . . . . . . . . . . . . . . . . . . . . . . . .
Certificate of deposit . . . . . . . . . . . . . . . . . . . . .

Cost

$187,026
74,564
68,258
350
50

$330,248

Included in cash and cash equivalents . . . . . . . . .
Included in marketable securities . . . . . . . . . . . .

$187,026
143,222

Total cash and marketable securities . . . . . . . . . .

$330,248

As of December 31, 2016

Unrealized
Gain

Unrealized
Loss

Fair
Value

$ —
2
132
—
—

$134

$ —
134

$134

$ —
(31)
—
—
—

$(31)

$ —
(31)

$(31)

$187,026
74,535
68,390
350
50

$330,351

$187,026
143,325

$330,351

For the years ended December 31, 2017  and  2016, there were no realized gains or  losses. The cost

of securities sold is based on the specific  identification method.

Unrealized loss positions in the available for  sale securities as  of  December 31,  2017 and

December 31, 2016 reflect temporary impairments that  have been  in a  loss position for  less  than twelve
months and as such are recognized in  other  comprehensive gain/  (loss).  The fair value of these
available for sale securities in unrealized  loss positions was $295.1  million  and $58.7  million  as of
December 31, 2017 and 2016, respectively.

The Company holds available-for-sale  investment securities  which are reported  at fair  value on the

Company’s balance sheet. Unrealized  gains and losses are  reported within accumulated other
comprehensive income (‘‘AOCI’’) in the statements of  comprehensive loss.

6. Inventories

Inventories consist of work in process and finished goods related to the  manufacture of

GALAFOLD. The following table summarizes  the components of inventories  at December 31, 2017 (in
thousands):

Work-in-process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Finished goods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total  inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$3,843
780

$4,623

$3,308
108

$3,416

December 31, 2017

December 31, 2016

Inventory manufactured prior to approval was expensed to research and development. Inventories

are reviewed periodically to identify slow-moving or obsolete inventory  based on projected  sales  activity,
as well as product shelf-life. In evaluating the  recoverability  of  inventories produced, the Company
considers the probability that revenue will  be obtained from the  future sale of the  related inventory.
Inventory becomes obsolete when it has aged  past  its  shelf-life,  cannot be recertified and  is no longer
usable or able to be sold, or the inventory  has been damaged. In such instances, a full  reserve would be
taken against such inventory. Expired  inventory is disposed of and the related  costs are  recognized as
cost of product sales in the consolidated statement of operations. There  have been  no write-downs of
inventory from the time inventory was  first  capitalized nor have any inventory  reserves been recorded
to date.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

7. Property and Equipment

Property and equipment consist of the following (in  thousands):

Property and equipment consist of the  following:
Computer equipment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Computer software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Research equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Furniture and fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leasehold improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Construction in progress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Less accumulated depreciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

December 31,

2017

2016

$ 3,746
1,236
6,379
2,992
7,193
31

$ 3,511
1,347
7,465
3,018
6,970
—

21,577
(12,515)

22,311
(12,495)

$ 9,062

$ 9,816

Depreciation expense was $3.6 million and $3.2 million for the years ended  December 31, 2017

and 2016, respectively, and includes depreciation expenses  related to capital lease obligations.

8. Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses consist  of the following  (in thousands):

Accounts payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued professional fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued contract manufacturing & contract research costs . . . . . . . . . . . .
Accrued compensation and benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued facility costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued program fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign currency forward contract
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Capital lease, short term portion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Royalties payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued interest
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

December 31,

2017

2016

$ 7,867
5,845
4,632
19,620
1,665
5,707
—
307
2,529
313
5,405

$12,905
5,079
8,042
9,686
1,740
—
265
283
510
208
2,290

$53,890

$41,008

9. Stockholders’ Equity

Common Stock and Warrants

As of December 31, 2017, the Company was authorized  to  issue 250  million  shares of common
stock. Dividends on common stock will be paid when,  and  if, declared by  the  board of directors. Each
holder of common stock is entitled to vote on all matters that are appropriate for stockholder voting
and is entitled to one vote for each share held.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

As discussed in ‘‘— Note 1. Business,’’ On  February 15, 2018, the Company announced the pricing

of an underwritten offering of 19,354,839 shares  of its  common stock at $15.50 per shares, resulting in
gross  proceeds of $300.0 million, before  deducting underwriting discounts and commissions and offering
expenses payable by the Company. The  offering  closed on February 21, 2018 and the Company
received net proceeds of $282.0 million from  the Offering, after deducting underwriting discounts  and
commissions and offering expenses payable by the Company. The offering is expected to close on
February 21, 2018, subject to customary closing conditions. J.P. Morgan Securities LLC and Goldman
Sachs & Co. LLC were acting as joint  lead book-running managers, Cowen and Leerink Partners were
acting as co-book-running managers, and  BofA  Merrill Lynch was acting as lead co-manager for the
offering.

As discussed in ‘‘— Note 1. Business,’’ in July  2017, the Company entered into the  Underwriting

Agreement with J.P. Morgan Securities LLC and Goldman  Sachs & Co. LLC, as representatives of the
several underwriters set forth on Schedule 1 thereto,  relating  to  the Offering.  Under the terms of the
Underwriting Agreement, the Company  issued  and sold 21,122,449 shares at a price to the public of
$12.25 per share, resulting in gross proceeds of $258.8  million, before deducting underwriting  discounts
and commissions and offering expenses  payable by the Company. The Offering closed on July 18, 2017
and the Company received net proceeds from  the Offering, after deducting underwriting discounts and
commissions and offering expenses payable by the Company of $243.0 million.

As discussed in ‘‘— Note 11. Debt Instruments  and Related Party Transactions’’,  in December
2016, the Company issued $250 million  aggregate principal  amount  of 3.0% unsecured Convertible
Senior Notes due 2023 (the ‘‘Convertible Notes),  in a  private offering.  The Notes will mature on
December 15, 2023, unless earlier repurchased,  redeemed, or converted in accordance with  their terms.
The Notes are convertible at the option of the holders,  under certain circumstances and during certain
periods, into cash, shares of the Company’s common stock, par value $0.01 per share (‘‘Common
Stock’’), or a combination thereof. Prior to the close of business on  the business day immediately
preceding September 15, 2023, the Notes  are  convertible  at the option of the holders  of the Notes only
under certain conditions. On or after  September 15,  2023, until the close of business on the second
business day immediately preceding the  maturity date,  holders of the Notes may convert their Notes at
their option at the conversion rate then  in effect, irrespective  of  these  conditions. The Company will
settle conversions of the Notes by paying or delivering,  as the case may be,  cash, shares of Common
Stock, or a combination of cash and shares of Common Stock, at the Company’s election. The
conversion rate will initially be 163.3987  shares of  Common Stock per $1,000 principal amount of Notes
(equivalent to an initial conversion price  of approximately $6.12 per share of  Common Stock). The
conversion rate is subject to customary adjustments upon the occurrence of certain events.

Beginning in April 2016 and through July 2016, the  Company sold 15.0 million shares of  Common
Stock under an ATM equity program  with  Cowen and Company, LLC (‘‘Cowen’’) acting as sales agent.
Cowen was compensated at a fixed commission rate  up to 3.0%. The ATM  sales agreement resulted in
net proceeds of $97.1 million, after Cowen’s commission  of  $2.7 million  and other expenses of
$0.2 million. The Company has completed all  sales under the ATM equity program.

As discussed in ‘‘— Note 11. Debt instruments and  Related Party Transactions,’’ the Company

issued approximately 1.8 million and 1.3 million of  warrants in February 2016 and June 2016,
respectively. The closing balance of the  warrants  was  $16.1  million as of December 31, 2016  and is
recorded  within equity on the Consolidated Balance Sheets.

As discussed in ‘‘— Note 3. Acquisitions,  in  July 2016, the  Company entered into an Agreement

and Plan of Merger (the ‘‘MiaMed Agreement’’) with  MiaMed.  Under the terms of the  MiaMed

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

Agreement, the former holders of MiaMed’s capital stock received an  aggregate  of $6.5 million,
comprised of (i) approximately $1.8 million  in cash (plus MiaMed’s cash  and cash equivalents at closing
and  less any of MiaMed’s unpaid third-party  fees  and expenses related to the transaction), and
(ii) 825,603 shares of the Company’s Common  Stock.  In addition, the Company  also agreed  to  pay up
to an additional $83.0 million in connection with the achievement of certain clinical,  regulatory and
commercial milestones, for a potential aggregate deal value of $89.5  million.

In September 2015, the Company acquired Scioderm with cash  and stock.  As part of the
acquisition, the Company paid holders of Scioderm an amount equal to $223.9 million, of which
approximately $141.1 million was paid in cash and approximately  $82.8 million was paid through  the
issuance of 5.9 million newly issued shares.

Nonqualified Cash Plan

The Company’s Deferral Plan, (the ‘‘Deferral Plan’’) provides certain key employees and  members

of the Board of Directors as selected by the Compensation Committee, with an  opportunity to defer
the receipt of such participant’s base salary, bonus  and director’s fees, as  applicable. The Deferral Plan
is intended to be a nonqualified deferred compensation plan that complies with the provisions of
Section 409A of the Internal Revenue Code  of 1986 as amended.

The following table summarizes the deferred  compensation  amounts under the  Deferral  Plan  as  of

December 31, 2017 and 2016, respectively (in thousands):

Year ended
December 31,

2017

2016

Deferred compensation investment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred compensation liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Investment income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unrealized gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$2,248
$2,258
66
$
92
$

$1,469
$1,479
34
$
32
$

Deferral Plan investment assets are classified as  trading securities and are recorded at fair value

with changes in the investments’ fair  value recognized in AOCI in the  period they occur. Deferred
compensation liability amounts under  the Deferral Plan are  included in  other long-term liabilities.

Equity Incentive Plans

The Company’s Equity Incentive Plans consist of the Amended and Restated  2007 Equity

Incentive Plan (the ‘‘Plan’’) and the 2007  Director Option Plan (the ‘‘2007 Director  Plan’’). The Plan
provides for the granting of restricted stock and options  to purchase common stock in  the Company to
employees, advisors and consultants  at  a  price to be determined by the Company’s board of directors.
The Plan is intended to encourage ownership of  stock  by employees and consultants of the  Company
and to provide additional incentives for  them  to  promote the success of the Company’s business. The
2007 Director Plan is intended to promote the recruiting and retention  of highly  qualified eligible
directors and strengthen the commonality of  interest between  directors and stockholders by
encouraging ownership of common stock  of the  Company. Under the provisions of each plan, no
option will have a term in excess of 10 years.

The Board of Directors, or its committee, is  responsible for determining  the individuals to be
granted options, the number of options each individual will receive, the option price per share,  and the
exercise period of  each option. Options  granted pursuant to the Plan generally vest 25% on the first

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

year anniversary date of grant plus an  additional 1/48th for each month  thereafter and  may be
exercised in whole or in part for 100% of the  shares vested at  any time after  the date of  grant. Options
under the 2007 Director Plan may be granted to new directors  upon joining  the Board and vest in the
same manner as options under the Plan. In addition, options are automatically granted to all directors
at each annual meeting of stockholders and vest on the  date of the annual meeting of stockholders of
the Company in the year following the year during which the options were granted.

As of December 31, 2017, the Company has reserved up to 7,855,550 shares for  issuance  under the

Plan and the 2007 Director Plan.

Stock Option Grants

The Company adopted the fair value method  of  measuring stock-based compensation, using the
fair value of each equity award granted. The Company  chose the ‘‘straight-line’’ attribution method for
allocating compensation costs and recognized the  fair value of each stock option on  a straight-line  basis
over the vesting period of the related awards.

The Company uses the Black-Scholes option  pricing model when  estimating the grant date fair

value for stock-based awards. Use of a valuation  model requires management to make certain
assumptions with respect to selected model  inputs. Expected volatility was  based on  our  historical
volatility since our initial public offering in  May  2007. Beginning  in the third quarter of 2017,  the
average expected life was determined using our  actual  historical data versus a ‘‘simplified’’ method  used
in prior quarters. The ‘‘simplified’’ method  of  estimating the  expected exercise term  uses the  mid-point
between the vesting date and the end  of  the contractual term. In earlier quarters,  we did  not  have
sufficient reliable exercise data to justify a change from the  use of the  ‘‘simplified’’  method of
estimating the expected exercise term  of employee  stock option  grants. The impact from this change
was not material. The risk-free interest rate is based  on  U.S.  Treasury, zero-coupon issues with  a
remaining term equal to the expected life assumed at the date of grant. Forfeitures  are estimated based
on voluntary termination behavior, as  well as  a historical analysis of actual  option forfeitures.

The weighted average assumptions used  in the  Black-Scholes option pricing  model  are as follows:

Years Ended
December 31,

2017

2016

2015

Expected stock price volatility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Risk free interest rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected life of options (years) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expected annual dividend per share . . . . . . . . . . . . . . . . . . . . . . . . . .

82.8% 81.3% 75.9%
2.0% 1.5% 1.7%
6.18
$0.00

6.25
$0.00

6.25
$0.00

The weighted average grant-date fair  value per share of options  granted during 2017, 2016  and

2015 were $5.09, $5.28 and $7.51, respectively.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

The following table summarizes information about stock options outstanding:

Options outstanding, December 31, 2014 . . .
Granted . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exercised . . . . . . . . . . . . . . . . . . . . . . . . . .
Forfeited . . . . . . . . . . . . . . . . . . . . . . . . . .

Options outstanding, December 31, 2015 . . .
Granted . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exercised . . . . . . . . . . . . . . . . . . . . . . . . . .
Forfeited . . . . . . . . . . . . . . . . . . . . . . . . . .

Options outstanding, December 31, 2016 . . .
Granted . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exercised . . . . . . . . . . . . . . . . . . . . . . . . . .
Forfeited . . . . . . . . . . . . . . . . . . . . . . . . . .

Number of
Shares

(in thousands)
10,020.7
3,917.2
(2,070.3)
(138.4)

11,729.2
5,114.1
(723.1)
(622.7)

15,497.5
3,695.3
(2,878.7)
(1,133.0)

Weighted
Average
Exercise
Price

Weighted
Average
Remaining
Contractual
Life

Aggregate
Intrinsic
Value

(in millions)

$ 5.02
$11.61
$ 5.43
$ 7.76

$ 7.11
$ 7.67
$ 4.20
$ 8.62

$ 7.37
$ 7.17
$ 5.67
$ 9.55

Options outstanding, December 31, 2017 . . .

15,181.1

$ 7.48

7.2 years

$105.8

Vested and unvested expected to vest,

December 31, 2017 . . . . . . . . . . . . . . . . .
Exercisable at December 31, 2017 . . . . . . . .

14,398.5
7,985.6

$ 7.45
$ 7.05

7.1 years
6.0 years

$100.9
$ 59.1

The aggregate intrinsic value of options exercised during the years ended December 31, 2017,  2016

and 2015 was $20.8 million, $2.6 million and $14.7 million respectively. Cash proceeds  from stock
options exercised during the years ended December 31,  2017,  2016, and 2015 were  $16.3 million,
$3.0 million, and $11.2 million, respectively. As  of  December 31, 2017, the total unrecognized
compensation cost related to non-vested stock options granted was $31.9  million  and is expected  to  be
recognized over a weighted average period  of 2.5 years.

Restricted Stock Units (‘‘RSUs’’) and Performance-Based Restricted Stock Units

RSUs awarded under the Plan are generally  subject to graded vesting  and  are contingent on an

employee’s continued service. RSUs  are generally subject  to forfeiture if employment terminates prior
to the release of vesting restrictions. The Company expenses the  cost of the  RSUs,  which is  determined
to be the fair market value of the shares  of Common Stock underlying the  RSUs  at the  date of grant,
ratably over the period during which the  vesting restrictions  lapse.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

A summary of non-vested RSU activity under the Plan for the year  ended December 31, 2017 is as

follows:

Non-vested units as of December 31, 2015 . .
Granted . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vested . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Forfeited . . . . . . . . . . . . . . . . . . . . . . . . . . .

Number of
Share

(in thousands)
478.5
582.7
(281.9)
(34.9)

Non-vested units as of December 31, 2016 . .
Granted . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vested . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Forfeited . . . . . . . . . . . . . . . . . . . . . . . . . . .

744.4
2,348.7
(318.2)
(199.8)

Non-vested units as of December 31, 2017 . .

2,575.1

Weighted
Average Grant
Date Fair
Value

Weighted
Average
Remaining
Years

Aggregate
Intrinsic
Value

(in  millions)

$10.38
$ 6.21
$ 8.73
$ 7.71

$ 7.86
$ 5.69
$ 9.23
$ 6.24

$ 5.85

2.47

$37.1

On December 30, 2016, the Compensation Committee approved a form of Performance-Based
Restricted Stock Unit Award Agreement (the ‘‘Performance-Based RSU  Agreement’’),  to  be  used for
performance-based RSUs granted to participants under the Amended and Restated  Amicus
Therapeutics, Inc. 2007 Equity Incentive  Plan, including named  executive officers. Certain awards under
the form of Performance-Based RSU  Agreement  were granted in January  2017. The table above
includes 401,413 market performance-based  restricted stock units (‘‘MPRSUs’’)  granted to executives.
Vesting of these awards is contingent  upon the Company meeting certain total shareholder return
(‘‘TSR’’) levels as compared to a select  peer  group over the  next three  years. The MPRSUs cliff vest  at
the end of the three-year period and have a maximum potential to vest at  200% (802,826 shares) based
on TSR performance. The related share-based  compensation  expense is  determined based on the
estimated fair value of the underlying shares on the date  of  grant and is  recognized straight-line over
the vesting term. The estimated fair  value per share of the MPRSUs was $8.08 and was calculated
using a Monte Carlo simulation model.  The table  above also includes 401,413 performance based
awards that will vest over the next three  years based on the  Company achieving  certain clinical
milestones.

For the year ended December 31, 2017,  0.3 million of the RSUs vested and all non-vested units
are expected to vest over their normal term. As  of  December  31, 2017, there  was $11.4 million of total
unrecognized compensation cost related to unvested  RSUs with service-based vesting conditions. These
costs are expected to be recognized over  a weighted average  period of 2.47  years.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

Compensation Expense Related to Equity Awards

The following table summarizes the equity-based compensation expense recognized in the

statements of operations (in thousands):

Equity compensation expense recognized in:

Research and development expense . . . . . . . . . . . . . . . . . . . .
Selling, general and administrative expense . . . . . . . . . . . . . . .

$10,328
12,773

$ 8,071
9,433

$4,600
5,372

Total equity compensation expense . . . . . . . . . . . . . . . . . . . . .

$23,101

$17,504

$9,972

Years Ended December 31,

2017

2016

2015

10. Assets and Liabilities Measured at  Fair Value

The Company’s financial assets and liabilities are measured  at  fair value and  classified within the

fair value hierarchy which is defined  as  follows:

Level 1  — Quoted prices in active markets  for  identical  assets  or liabilities that the  Company
has the ability to access at the measurement  date.

Level 2  — Inputs other than quoted prices in  active markets  that are observable for the asset
or liability, either directly or indirectly.

Level 3  — Inputs that are unobservable  for the  asset or liability.

A summary of the fair value of the Company’s recurring assets and liabilities aggregated by the
level  in the fair value hierarchy within which  those measurements fall as of December  31, 2017 are
identified in the following table (in thousands):

Assets:
Commercial paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Asset-back securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Corporate debt securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Money market funds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Level 2

Total

$ 79,803
30,287
199,012
2,598

$ 79,803
30,287
199,012
2,598

$311,700

$311,700

Liabilities:
Contingent consideration payable . . . . . . . . . . . . . . . . . . . . . . .
Deferred compensation plan liability . . . . . . . . . . . . . . . . . . . . .

Level 2

Level 3

Total

$ — $25,400
—

2,258

$25,400
2,258

$2,258

$25,400

$27,658

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

A summary of the fair value of the Company’s assets and liabilities  aggregated by the level in the

fair value hierarchy within which those measurements fall  as  of  December 31, 2016 are identified in the
following table (in thousands):

Assets:
Commercial paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Corporate debt securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Money market funds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Level 2

Total

$ 68,390
74,535
1,829

$ 68,390
74,535
1,829

$144,754

$144,754

Liabilities:
Contingent consideration payable . . . . . . . . . . . . . . . . . . . . . .
Derivative liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred compensation plan liability . . . . . . . . . . . . . . . . . . .

Level 2

Level 3

Total

$ — $269,722
—
—

265
1,479

$269,722
265
1,479

$1,744

$269,722

$271,466

See ‘‘— Note 11. Debt Instruments and Related Party Transactions’’  for the carrying amount and
estimated fair value of the Company’s  Convertible Notes  due in 2023. The Company did not have any
Level 3 assets as of December 31, 2017 or 2016. The Company did not  have any  transfers  between the
Levels during the year ended December 31, 2017 and December 31, 2016.

Cash, Money Market Funds and Marketable Securities

The Company classifies its cash and money  market  funds  within the fair value hierarchy  as Level 1
as these assets are valued using quoted  prices in  active  market  for  identical assets at  the measurement
date.  The Company considers its investments in marketable securities as  available  for sale and classifies
these assets within the fair value hierarchy as Level  2 primarily utilizing broker quotes in  a non-active
market for valuation of these securities.  No  changes in  valuation  techniques or  inputs  occurred during
the year ended December 31, 2017. No transfers  of assets between Level  1 and Level 2 of  the fair
value measurement hierarchy occurred  during the  year  ended December 31, 2017.

Contingent Consideration Payable

As discussed in ‘‘— Note 1. Business,’’  on September  13, 2017, the  Company reported that top-line
data from the randomized, double-blind,  placebo-controlled  Phase 3  clinical study (ESSENCE, SD-005)
to assess the efficacy and safety of the  novel topical wound-healing  agent SD-101 did not meet the
primary endpoints or secondary endpoints in  participants with EB. Based  on these top-line data, the
Company has no current plans to invest in any additional clinical studies  or commercial preparation
activities for SD-101. As such, the contingent consideration  related  to  Scioderm is no longer  payable as
of September 30, 2017.

The contingent consideration payable  resulted  from the acquisition of Callidus, as discussed  in
‘‘— Note 3. Acquisitions.’’ The most recent valuation was determined using a  probability weighted
discounted cash flow valuation approach.  Using this approach,  expected future cash  flows  are calculated
over the expected life of the agreement,  are  discounted, and then exercise scenario probabilities are

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

applied. The valuation is performed quarterly.  Gains  and losses are included in  the statement of
operations.

As discussed in ‘‘— Note 3. Acquisitions,’’ on July 5,  2016,  the Company  entered into the MiaMed

Agreement with MiaMed. MiaMed is  a  pre-clinical biotechnology company focused  on developing
protein replacement for CDKL5 and related diseases. Under  the terms  of  the MiaMed Agreement,  the
Company agreed to pay up to an additional $83.0  million in  connection with  the achievement of  certain
clinical, regulatory and commercial milestones,  for a  potential  aggregate deal value of $89.5  million.
The MiaMed Agreement was accounted  for as an asset acquisition and as such  the Company
determined that a  liability for future milestone  payments is not required to be recorded until the  actual
contingencies are met and will be recorded to research  and development expenses  when the
contingency is resolved.

The contingent consideration payable for Callidus has been  classified as a Level 3 recurring
liability  as its valuation requires substantial judgment and estimation  of  factors that are not currently
observable in the market. If different assumptions were used for the various inputs to the valuation
approach the estimated fair value could  be  significantly higher  or  lower than the fair value the
Company determined. The Company may be required to record losses  in future periods, including
expenses  related to CDKL5.

As discussed in ‘‘— Note 1. Business,’’  on September  13, 2017, the  Company reported that top-line
data from the randomized, double-blind, placebo-controlled  Phase 3  clinical study (ESSENCE, SD-005)
to assess the efficacy and safety of the novel topical  wound-healing  agent SD-101 did not meet the
primary endpoints or secondary endpoints in participants with EB. Based  on these top-line data, the
Company has no current plans to invest in any additional clinical studies  or commercial preparation
activities for SD-101. As such, the contingent consideration  related  to  Scioderm is no longer  payable  as
of September 30, 2017.

On February 7, 2018, the Company announced positive  results from  the global Phase 1/2 clinical

study  (ATB200-02) to investigate ATB200/AT2221 in  patients with Pompe disease. As a result  of  these
positive results, the probability of success of ATB200 was  increased to 71%-100%  at December 31,
2017, which drove the increase in fair  value of the liability.  With these data,  the Company plans to
continue a series of collaborative discussions with regulators in  the US and EU.  This event  was
considered in the calculation of the Contingent Consideration as  of  December  31, 2017.

The following significant unobservable inputs were used in the valuation of  the contingent

consideration payable of Callidus for the ATB-200 Pompe program:

Contingent Consideration Liability

Fair value as of
December 31,
2017

Valuation Technique

Unobservable Input

Range

Discount rate

11.5%

Clinical and regulatory

milestones

$25.0 million Probability

weighted
discounted cash
flow

Probability of
achievement of
milestones

Projected year
of payments

71.0%  - 100.0%

2018 - 2022

Contingent consideration liabilities are remeasured  to  fair value each reporting  period using
projected revenues, discount rates, probabilities  of  payment and projected payment  dates. Projected

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

contingent payment amounts related to clinical and regulatory based milestones  are discounted  back to
the current period using a discounted cash flow model. Revenue-based payments are valued using  a
monte-carlo valuation model, which simulates future revenues during the earn out-period using
management’s best estimates. Projected revenues are based on our  most  recent  internal operational
budgets and long-range strategic plans. Increases in projected revenues and probabilities of payment
may result in higher fair value measurements. Increases in  discount rates  and the time to payment may
result in lower fair value measurements. Increases or decreases  in any of those  inputs  together,  or in
isolation, may result in a significantly lower or higher fair value measurement.  There is no assurance
that any of the conditions for the milestone payments  will be met.

The following table shows the change in the  balance of  contingent consideration payable for the

year ended December 31, 2017 and 2016, respectively (in  thousands):

Balance, beginning of the period . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Payment  of contingent consideration  in cash . . . . . . . . . . . . . . . . . . . .
Payment  of contingent consideration  in stock . . . . . . . . . . . . . . . . . . .
Unrealized change in fair value change during the  period, included in

Year ended December 31,

2017

2016

$ 269,722
(10,000)
—

$274,077
(5,000)
(6,115)

Statement of Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(234,322)

6,760

Balance, end of the period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 25,400

$269,722

Deferred Compensation Plan- Investment  and Liability

As disclosed in ‘‘— Note 9. Stockholders’ Equity,’’ the Deferral  Plan provides  certain key
employees and members of the Board  of  Directors with an opportunity to defer the receipt  of such
participant’s base salary, bonus and director’s fees, as applicable. Deferral  Plan assets are classified  as
trading securities and recorded at fair  value with changes  in the  investments’ fair value recognized in
the period they occur. The asset investments consist of market exchanged mutual funds. The  Company
considers its investments in marketable  securities,  as available-for-sale and classifies  these  assets and
related liability within the fair value hierarchy as  Level 2 primarily  utilizing broker quotes  in a
non-active market for valuation of these securities.

11. Debt Instruments and Related Party  Transactions

October 2015 and February 2016 Notes and Warrants Purchase Agreement

In October 2015, the Company entered into the October 2015 Purchase Agreement with Redmile,
who beneficially owned approximately  6.7%  of  the Common Stock as  of  December  31, 2015, whereby it
sold, on a private placement basis, (a)  $50.0 million aggregate principal amount of its unsecured
promissory notes (‘‘Notes’’) and (b) five-year  warrants (‘‘Warrants’’) for 1.3 million shares of Common
Stock. The payment terms under the purchase agreement contained two installments, the first
$15.0 million in October 2017 and the balance $35.0 million in October 2020. Interest  was payable at
4.1% on a monthly basis over the term of the loan. Due  to the  embedded redemption (put and/or call)
features in the note agreement, it was  determined  that the fair value  of the warrants should  be
bifurcated from the value of the notes payable and recorded as a debt discount. The relative  fair value
of the warrants and the debt discount as  related to the October 2015 purchase agreement was
determined to be $8.8 million.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

This Purchase Agreement was modified in February  2016 when the Company entered into a Note

and Warrant Purchase Agreement (the  ‘‘February 2016 Purchase Agreement’’) with  Redmile for an
aggregate amount of up to $75.0 million. The Company agreed with Redmile  that  in full consideration
of the purchase price for the notes issued under the October 2015 Purchase Agreement, Redmile
surrendered for cancellation all notes and  warrants acquired from the  October 2015 Purchase
Agreement and the Company paid Redmile  any unpaid interest accrued thereunder. Pursuant to the
February 2016 agreement, at closing, it  sold, on a private placement basis (a) $50.0 million aggregate
principal amount of unsecured promissory  notes (‘‘Initial Notes’’) and  (b) five year warrants  to
purchase up to 37 shares of the Company’s  Common Stock for every $1,000 of the principal amount of
Initial Notes purchased (‘‘Initial Warrants’’), for an aggregate of up to 1,850,000 shares of Common
Stock issuable under the Initial Warrants.  The payment terms contained two installments, the first
$15.0 million in October 2017 and the balance  $35.0 million in October 2021. The interest rate was
3.875% and payable upon of maturity. This transaction  was accounted for as a debt modification in
accordance with ASC 470-50. The incremental fair value  between the warrants that were  cancelled and
the February  issued warrants of $3.5 million was recorded  as additional unamortized debt discount on
the balance sheet and added to the prior  warrant balance within equity.

The Notes mentioned above were cancelled in December 2016. For more details, refer to section

December 2016 Note Purchase Agreement  below in this footnote.

June 2016 Amended Purchase Agreement

In June 2016, following the marketing approval  for migalastat in Europe, the Company entered

into the Amended Purchase Agreement  with  Redmile.  Such  amendment  joined GCM to the February
2016 Purchase Agreement. Pursuant to  the Amended Purchase Agreement, the Company sold an
additional $30 million unsecured promissory notes  and  five year warrants to purchase up to purchase
up to 42 shares of our Common Stock,  par value  $0.01 per share  for every  $1,000 of the principal
amount of additional notes purchased,  for an aggregate of up to 1,260,000 shares of Common Stock
issuable from the additional warrants. The payment was  due in October 2021. The  interest rate was
3.875% and payable upon of maturity. The  Notes mentioned above were cancelled in December 2016.
For more details, refer to section December  2016  Note  Purchase Agreement below in this footnote.

December 2016 Note Purchase Agreement

On December 15, 2016, the Company entered into a  Note Purchase Agreement (‘‘Note Purchase

Agreement’’) with GCM and RedMile,  pursuant to which the  Company agreed to prepay all
outstanding principal and accrued and  unpaid interest on the notes issued by the  Company and held by
GCM and Redmile. Such prepayment  was  made in December, 2016. The Note Purchase Agreement
did not cancel the warrants, under the Amended  Purchase  Agreement. The net loss on extinguishment
of the debt was $13.3 million and is included  as  loss  on extinguishment in the Consolidated Statement
of Operations for the year ended December 31, 2016.

2016 Convertible Debt

In December, 2016, the Company issued at  par value $250 million aggregate principal amount of
unsecured Convertible Senior Notes due 2023  (the ‘‘Convertible Notes’’), which included the exercise in
full of the $25 million over-allotment option granted to the initial purchasers of the Notes, in  a private
offering to qualified institutional buyers pursuant to Rule 144A  under the Securities Act. Interest is
payable semiannually on June 15 and  December 15  of each  year, beginning  on June 15, 2017. The
Notes will mature on December 15, 2023, unless earlier repurchased, redeemed, or converted in

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

accordance with their terms. The Notes are convertible at the option  of  the holders, under certain
circumstances and during certain periods, into cash, shares of the  Company’s common stock  or a
combination thereof and may be settled as  described  below. The  net proceeds  from the Note  Offering
were $243.0 million, after deducting fees and  estimated  expenses  payable by the Company. In addition,
the Company used approximately $13.5 million of the net  proceeds from  the issuance of the
Convertible Notes to pay the cost of the capped call  transactions (‘‘Capped Call Confirmations’’) that
the Company entered into in connection with the issuance of the Convertible Notes.

The Convertible Notes are governed by  an indenture dated December 21, 2016 (the ‘‘Indenture’’)

by and between Amicus and Wilmington Trust, National  Association, as  trustee.

The Convertible Notes are initially convertible into approximately 40,849,675  shares of the
Company’s common stock under certain circumstances prior to maturity at a conversion rate of
163.3987 shares per $1,000 principal amount  of Convertible Notes,  which represents  a conversion price
of approximately $6.12 per share of Common Stock, subject to adjustment under  certain conditions.
Holders may convert their Convertible  Notes at their  option at  specified times prior to the  maturity
date of December 15, 2023, only if:

(cid:129) during any fiscal quarter commencing  after March 31, 2017, if the  last reported sale price  of  the
Company’s common stock for at least 20 trading days  in the period of 30  consecutive  trading
days ending on the last trading day of the immediately preceding fiscal quarter is  equal to or
more than 130% of the conversion price of the Convertible Notes on  the last  day of such
preceding fiscal quarter;

(cid:129) a Holder submits its Convertible Notes for  conversion  during the five business day period

following any five consecutive trading  day period in which the trading price  for the  Convertible
Notes, per $1,000 principal amount of  the Convertible Notes, for each such trading day was less
than  98% of the product of the last reported  sale price of the Company’s common  stock  and the
conversion rate of the Convertible Notes  on  such  date; or

(cid:129) the Company issues to all or substantially all of the holders of common  stock  rights options or
warrants entitling then them for a period of not  more than 60  calendar days after the  date of
such  issuance to subscribe for or purchase shares  of  the Common  Stock, at a price per share less
than  the average of the Last Reported Sale Prices  of  the Common Stock  for the  10 consecutive
Trading Day period ending on, and including, the Trading Day immediately preceding the  date
of announcement of such issuance or distributes  to  all or substantially all holders of the
Common Stock the Company’s assets,  debt  securities or rights  to  purchase the Company’s
securities which distribution has a per share value of  exceeding 10% of the Last  Reported Sale
Price  of the Common Stock on the Trading Day  immediately preceding  the date  of
announcement of such distribution

(cid:129) the Company enters into specified  corporate transactions.

(cid:129) the Company has had a call for redemption, the holder can convert up until the second trading

day immediately preceding the redemption date

The Convertible Notes will be convertible,  at the  option of the note holders,  regardless of whether
any of the foregoing conditions have been satisfied, on or after  September 15, 2023  at any time  prior to
the close of business on the second scheduled trading  day immediately preceding  the stated maturity
date of December 15, 2023.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

The last reported sale price of the Company’s Common Stock was equal to or more than 130% of
the conversion price of the Convertible  Notes for at  least 20 trading days  of the 30 consecutive trading
days ending on the last day of the fourth  quarter of 2017. As a result, the Convertible  Notes are
currently convertible into the Company’s Common  stock as discussed above.

Upon the occurrence of a make-whole fundamental change or if the Company call all or any

portion of the Convertible Notes for redemption prior to July 1, 2020, the Company  will, in certain
circumstances, increase the conversion  rate  by a number  of additional  shares for a holder that elects to
convert its Convertible Notes in connection with such  make-whole fundamental change  or during the
related redemption period.

Upon conversion, the Company may  pay cash, shares of  the Company’s common  stock or a

combination of cash and stock, as determined by the Company in  its  discretion.

The Company accounts for the Convertible Notes as a  liability and equity component where the
carrying  value of the liability component will be valued based on a similar instrument. In accounting for
the issuance of the Convertible Notes,  the Company separated the Convertible Notes into liability and
equity components. The carrying amount of the liability component was calculated by measuring the
fair value of a similar liability that does  not  have an associated convertible feature. The carrying
amount of the equity component representing the conversion option was determined by deducting the
fair value of the liability component from the  par value of the Convertible Notes as a whole. The
excess of the principal amount of the liability component over its carrying  amount,  referred to as the
debt discount, is amortized to interest  expense over  the seven-year term of the Convertible Notes. The
equity component is not re-measured  as long as it continues to meet the conditions for equity
classification.

In accounting for the issuance of the Convertible Notes, the Company separated the Convertible
Notes into liability and equity components based on their relative values.  The carrying amount of the
liability component was calculated by measuring the  fair  value of a similar liability that does not have
an associated convertible feature. The  carrying amount of the  equity component, representing the
conversion option, was determined by  deducting  the fair  value of the liability component from the par
value of the Convertible Notes. The difference between the  principal amount of the Convertible Notes
and the liability component represents  the debt discount, which is recorded as a direct deduction from
the related debt liability in the Consolidated Balance Sheets  and amortized to interest expense using
the effective interest method  over the  seven-year term  of  the Convertible Notes. The equity component
of the Convertible Notes of approximately  $88.3 million is included in additional paid-in capital in  the
Consolidated Balance Sheets and is not  remeasured as  long as it continues to meet the conditions for
equity classification. Additionally, the Company  recorded  a deferred tax liability of $29.8 million in
relation to the Convertible Notes.

The Company incurred transaction costs of  approximately $7.5 million, including approximately
$6.9 million that was paid from the gross proceeds  of  the Convertible Notes offering. In  accounting for
the transaction costs, the Company allocated  the total  amount incurred to the liability and equity
components using the same proportions  as the  proceeds from the Convertible Notes. Transaction costs
attributable to the liability component  were recorded as a direct deduction from the related debt
liability in the Consolidated Balance Sheets and amortized to interest expense over  the seven-year term
of the Convertible Notes. Transaction  costs attributable to the equity component were netted with the
equity component in additional-paid-in-capital.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

The Convertible Notes consist of the following as of December 31, 2017 and 2016  (In thousands):

Liability component

2017

2016

Principal
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Less: debt discount  (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Less: deferred financing  (1)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$250,000
(81,566)
(4,267)

$250,000
(90,807)
(4,729)

Net carrying value of the debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$164,167

$154,464

(1) Included in the Consolidated Balance Sheets  within Convertible Senior Notes (due  2023)  and

amortized to interest expense over the  remaining life  of the Convertible Senior Notes using
the effective interest rate method.

The fair value of the debt at December 31, 2017 was approximately $633.4 million.

The following table sets forth total interest  expense recognized related  to  the Convertible  Notes

for the year ended December 31, 2017  and 2016 (In thousands):

Components

2017

2016

Contractual interest expense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization of deferred financing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization of debt discount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 7,528
470
9,241

$ 208
26
248

Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$17,239

$ 482

Effective interest rate of the liability  component . . . . . . . . . . . . . . . . . . . . .

10.85% 10.85%

The Capped Call Confirmations of $13.5 million are expected generally to reduce  the potential
dilution to the Common Stock upon  any conversion  of  the Convertible Notes  and/or offset  the cash
payments the Company is required to  make in  excess  of  the principal amount upon conversion of the
Notes in the event that the market price of the  Common Stock is greater than the  strike price  of the
Capped Call Confirmations (which initially corresponds to the  initial conversion price  of the
Convertible Notes and is subject to certain adjustments under the terms of the Capped Call
Confirmations), with such reduction  and/or offset  subject to a cap  based on  the cap price of  the
Capped Call Confirmations. The Capped Call  Confirmations have an initial cap price of $7.20 per
share, which represents a premium of  approximately 50% over  the closing price of the  Company’s
Common Stock on The NASDAQ Global Market on December  15, 2016,  and is subject to certain
adjustments under the terms of the Capped Call Confirmations.  The  Capped Call Confirmations will
cover, subject to anti-dilution adjustments  substantially similar to those applicable to the Convertible
Notes, the number of shares of Common Stock that will underlie the  Convertible Notes. The Capped
Call Confirmations do not meet the criteria for separate accounting as  a derivative as they are indexed
to the Company’s Common Stock. The  premiums paid for the Capped Call  Confirmations have been
included as a net reduction to additional  paid-in capital.

12. Leases

Operating Leases

The Company currently leases office  space  and  research  laboratory space in  various facilities under

operating agreements expiring at various dates  through 2025.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

The following table contains information about  our current  significant leased properties as of

December 31, 2017:

Location

Approximate
Square Feet

Use

Lease expiry  date

Cranbury, New Jersey . . . . . . . . . . . . . . . . . . .
Durham, North Carolina . . . . . . . . . . . . . . . . .
Buckinghamshire, United Kingdom . . . . . . . . .
Munich, Germany . . . . . . . . . . . . . . . . . . . . . .

90,000
5,603
9,821
4,751

Office and laboratory
Office
Office
Office

September 2025
June 2018
September  2020
April 2022

In addition to the above, we also maintain small offices  in the  Italy, France, Netherlands, Spain,

Japan, Canada and Denmark. We believe that our current office  and  laboratory facilities are  adequate
and suitable for our current and anticipated  needs.  We believe  that, to the extent required, we  will be
able to lease or buy additional facilities at commercially reasonable rates.

Rent expenses for the Company’s facilities  are recognized  over the term of the  lease. The
Company recognizes rent starting when possession  of  the facility is taken from the landlord. When a
lease contains a predetermined fixed  escalation  of the minimum rent, the Company recognizes the
related rent expense on a straight-line  basis  and  records the  difference between the  recognized rental
expense and the amounts payable under  the lease  as deferred rent liability. Tenant leasehold
improvement allowances are reflected  in  accrued expenses  on  the consolidated balance sheets and  are
amortized as a reduction to rent expense in the statement of operations  over the term of the lease.

At December 31, 2017, aggregate annual future minimum lease  payments under these leases are as

follows:

(in thousands)

2018

2019

2020

2021

2022 and
beyond

Total

Minimum lease payments . . . . . . . . . . . . . . . .

$2,762

$2,575

$2,472

$2,240

$8,467

$18,516

Rent expense, including fees for utilities  and common  area maintenances  for the years ended

December 31, 2017, 2016 and 2015 were  $3.9 million,  $3.5  million and $2.6 million, respectively.

Capital Leases

In 2016, the Company purchased equipment of  approximately $0.9  million through financing

arrangements. These financing arrangements include interest of approximately 0.2-5.7%, and  lease
terms of 36-48 months.

At December 31, 2017, aggregate annual future minimum lease  payments under these leases,

including interest, are as follows (in thousands):

Years ending December 31:

2018 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2019 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2020 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2021 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2022 and beyond . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$356
134
—
—
—

Total principal obligation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$490

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

13. Income Taxes

For financial reporting purposes, income (loss) before income taxes  includes the  following

components (in thousands):

Years Ended December 31,

2017

2016

2015

United States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$(440,696) $(174,913) $(123,697)
(8,421)
(28,868)

(8,425)

Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$(449,121) $(203,781) $(132,118)

Following were the components of income tax expense  (benefit)  for the  years  ending December 31,

2017 and December 31, 2016:

Current:

2017

2016

2015

State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

$

9
2,276

7
—

$ —
—

Deferred

Federal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(150,015)
(17,389)

(1,101) —
(2,645) —

Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$(165,119) $(3,739) $ —

A reconciliation of the statutory tax rates and  the effective  tax rates for the years ended

December 31, 2017, 2016 and 2015 are as  follows:

Statutory rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
State taxes, net of federal benefit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Permanent adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contingent consideration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R&D credit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign income tax rate differential
Impact of 2017 Act . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Valuation allowance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Years Ended
December 31,

2017

2016

2015

(34)% (34)% (34)%
(5)
(5)
3
(1)
—
(18)
(3)
(2)
2
5
—
27
(1)
5
36
(14)

(5)
2
—
(3)
1
—
2
37

Net

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(37)% (2)% (0)%

On December 22, 2017, the US government enacted the  Tax  Act. The  Tax  Act significantly revises

US tax law by, among other provisions, lowering  the US federal statutory income tax rate  to  21%,
imposing a mandatory one-time transition tax on previously deferred foreign earnings,  and eliminating
or reducing certain income tax deductions.

ASC 740, Income Taxes requires the  effects of  changes in tax laws to be recognized in the  period

in which the legislation is enacted. However, due to the complexity and  significance of  the Tax Act’s

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

provisions, the SEC staff issued SAB 118,  which allows  companies  to  record the tax effects of  the Tax
Act on a provisional basis based on a reasonable estimate, and then,  if necessary,  subsequently adjust
such  amounts during a limited measurement  period as more information becomes available. The
measurement period ends when a company has obtained, prepared, and  analyzed the information
necessary to finalize its accounting, but cannot extend beyond one year from enactment. The Tax Act
did not have a material impact on the  Company’s  financial  statements  because its  deferred temporary
differences are fully offset by a valuation  allowance  and  the Company does not have  any significant
offshore earnings from which to record the  mandatory transition tax. The Company  recorded an
income tax benefit of $2.7 million in the Consolidated Statement of Operations, in connection  with the
reduction in the statutory corporate income tax  rate. The  Company operates in a consolidated loss
position in its foreign operations, and does not have a one-time tax on accumulated earnings of  foreign
subsidiaries.

However, given the significant complexity of the  Tax Act,  anticipated guidance from the US
Treasury about implementing the Tax  Act, and the  potential  for additional guidance from the  SEC or
the FASB related to the Tax Act, these estimates  may  be  adjusted  during  the measurement period. The
Company continues to analyze the changes  in certain  income tax deductions, assess calculations of
earnings and profits in certain foreign subsidiaries, including  if those earnings are held in cash  or other
assets, and gather additional data to compute  the full impacts on the Company’s deferred and current
tax assets and liabilities.

For the year ended December 31, 2017,  the Company recorded an income tax  benefit of

$164.7 million due to the reduction of  the deferred  tax liability related to  Scioderm IPR&D as a  result
of the announcement of the Phase 3 ESSENCE study.

The Company recorded income tax expense of $2.3 million in  2017 for taxes in  foreign and  state

jurisdictions.

The Company did not recognize interest or  penalties related to income tax during the period
ended December 31, 2017 and did not  accrue for interest  or penalties  as of December 31, 2017.  The
Company does not have an accrual for uncertain tax positions as  of  December 31,  2017. Tax returns for
all years 2010 and thereafter are subject to future examination by tax  authorities.

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

Deferred income taxes reflect the net effect of temporary difference between the carrying amounts
of assets and liabilities for financial reporting purposes and the amounts used for income tax  purposes.
The significant components of the deferred tax  assets and liabilities are as follows (in thousands):

For Years Ended
December 31,

2017

2016

Deferred tax assets

Intellectual property . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization/depreciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Research tax credit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net operating loss carry forwards . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Non-cash stock issue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 44,573
3,082
43,382
221,912
6,158
10,751
7,328

$ 95,956
1,781
32,851
223,758
14,281
11,649
3,358

Gross deferred tax assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred tax liabilities
Business acquisition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Royalty payable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convertible notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Advanced R&D payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

337,186

383,634

(6,465)
(44,573)
(18,991)
(3,069)

(173,771)
(96,829)
(29,845)
—

83,189
(256,960)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total net deferred tax asset
Less valuation allowance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

264,088
(270,553)

Net deferred tax liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ (6,465) $(173,771)

The Company records a valuation allowance for temporary  differences for which  it is more likely

than not that the Company will not receive future tax  benefits. At December 31, 2017 and  2016, the
Company recorded valuation allowances  of  $270.6 million and $257.0 million, respectively, representing
an increase in the valuation allowance of  $13.6 million in 2017 due to the uncertainty regarding the
realization of such deferred tax assets,  to  offset the benefits of  net  operating losses  generated during
those years. The deferred tax liability related to business acquisitions  pertains to the basis  difference  in
IPR&D acquired by the Company. The  Company’s policy is  to  record a deferred tax liability related to
acquired IPR&D that may eventually  be  realized either  upon  amortization of the asset  when the
research is completed and a product is successfully launched  or the write-off of the  asset if it  is
abandoned or unsuccessful.

As of December 31, 2017, the Company had federal, state, and foreign net operating loss  carry
forwards (‘‘NOLs’’) of approximately  $777.6 million, $781.8 million,  and $47.1 million,  respectively. The
federal carry forward will expire in 2030 through 2037. Most of the state carry forwards generated prior
to 2009 have expired through 2016. The remaining state  carry  forwards  including those generated in
2010 through 2017 will expire in 2030  through 2037. The foreign NOLs  have indefinite expiration.
Utilization of NOLs may be subject to  a  substantial limitation pursuant  to  Section 382 of the  Code as
well as similar state statutes in the event  of an ownership change. Such ownership changes have
occurred in the past, and could occur  again in the  future As a result of these ownership  changes,
Section 382 places an annual limitation  on the amount of NOLs that  can be utilized to offset  future
taxable income each year, which is based on  the value  of the  company at  the change date.  This
limitation could result in expiration of those carry  forwards before utilization. In general, an ownership

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

change,  as defined by Section 382, results from  transactions that increase the ownership of certain
stockholders or public groups in the stock of a corporation by more  than 50  percentage points over a
three year period. The Company completed a detailed  study of its cumulative  ownership  changes for
2017 and determined that in 2017, there was no ownership change in excess of 50%; therefore there
was no  write-down to net realizable value of the federal  NOLs and research  and development  credits
subject  to the 382 limitations.

We also have research and experimentation and orphan drug credit carryforwards  of  approximately
$35.2 million and $8.2 million, respectively, which  will expire in the years 2023 through 2037. Deferred
tax assets for these carryforwards are subject to a full valuation allowance.

14. Licenses

The Company acquired rights to develop and commercialize its  product candidates  through
licenses granted by various parties. The  following  summarizes the  Company’s material rights  and
obligations under those licenses:

GSK — For discussion of the royalties and milestone  payments potentially due to GSK, see

‘‘— Note 15. Collaborative Agreements.’’

Mt. Sinai School of Medicine of New York  University (‘‘MSSM’’) — The  Company acquired exclusive
worldwide patent rights to develop and commercialize  migalastat and other pharmacological chaperones
for the prevention or treatment of human diseases  or clinical conditions  by increasing the activity of
wild-type and mutant enzymes pursuant  to  a  license agreement with  Mt. Sinai School of Medicine
(‘‘MSSM’’) of New York University. Under  this  agreement, to date, the Company  has paid no upfront
or annual license fees and there are no milestone  or  future payments  other than  royalties on net sales.
This agreement expires upon expiration of the last of the licensed  patent  rights, which  will  be  in 2019,
subject  to any patent term extension  that may be granted, or 2024 if the Company  develops  a product
for combination therapy (pharmacological chaperone plus/ERT) and  a patent issues from the  pending
application covering the combination therapy,  subject to any  patent term extension  that  may be
granted.

Under its license agreements, if the Company owes royalties on net  sales  for one of its products  to
more than one of the above licensors, then the Company has  the right to reduce the royalties  owed to
one licensor for royalties paid to another. The amount of royalties to be offset is generally limited in
each license and can vary under each agreement.  For migalastat, in  2017, the Company  incurred
$1.1 million of royalty expense under the agreement with MSSM.

The Company’s rights with respect to these agreements  to develop and commercialize migalastat

may terminate, in whole or in part, if the Company  fails to meet certain development or
commercialization requirements or if the Company does  not  meet its  obligations to make  royalty
payments.

15. Collaborative Agreements

GSK

In November 2013, Amicus entered into the  Revised Agreement  with GSK, pursuant to which

Amicus has obtained global rights to  develop and commercialize migalastat as a monotherapy and  in
combination with ERT for Fabry disease. The Revised  Agreement amends and replaces  in its entirety
the earlier agreement entered into between Amicus and GSK in  July 2012.  Under the  terms of the

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

Revised Agreement, there was no upfront payment from Amicus to GSK. For migalastat monotherapy,
GSK is eligible to receive post-approval and sales-based  milestones up to $40 million,  as well as tiered
royalties in the mid-teens in eight major  markets outside the  U.S.  For the year ended December 31,
2017, the Company incurred approximately  $3.9 million of royalty expenses  under the  revised
agreement with GSK.

Under the terms of the Revised Agreement, GSK will no  longer  jointly fund  development costs  for

all formulations of migalastat.

In evaluating the impact of both the  Expanded Collaboration Agreement and  the Revised
Agreement, the Company applied the  accounting guidance  regarding the impact of  potential  future
payments it may make in its role as a vendor (i.e., Amicus) to its  customer (i.e., GSK)  and evaluated if
these potential future payments could be a reduction of revenue from GSK. If  the potential future
payments to GSK are as follows:

(cid:129) a payment for an identifiable benefit, and

(cid:129) the identifiable benefit is separable from the existing relationship between  the Company and

GSK, and

(cid:129) the identifiable benefit can be obtained from a party other  than  GSK, and

(cid:129) the Company can reasonably estimate the fair value  of  the identifiable  benefit,

then  the potential future payments would be treated separately  from  the collaboration and research
revenue. However, if all these criteria  are  not satisfied, then the potential  future payments are treated
as a reduction of revenue.

Accordingly, the Company did not believe that, for accounting  purposes, the new U.S.  licensing
rights to migalastat obtained from GSK under the Expanded Collaboration  Agreement, nor the  ex  U.S.
licensing rights to migalastat obtained from GSK under the Revised Agreement, represented a
separate, identifiable benefit from the licenses in the Original Collaboration Agreement entered into
between Amicus and GSK in 2010. The contingent amounts  payable to GSK  were not sufficiently
separable from GSK’s original license and  the research and development  reimbursements such  that
Amicus could not have entered into  a similar  exchange transaction with another party. Additionally,  the
Company cannot reasonably estimate the fair  value of the worldwide licensing rights to migalastat.

The Company determined that the potential future payments to GSK  would be treated as a
reduction of revenue and that the total amount of revenue  to  be  received  under the arrangement  is no
longer fixed or determinable as the contingent milestone  payments are subject to significant
uncertainty.

As a  result, the Company no longer recognized any of the upfront license fees and premiums  on

the equity purchase from GSK until such time  as the  arrangement consideration becomes fixed or
determinable, because an indeterminable  amount may ultimately be payable  back to GSK. These
amounts (the balance of the unrecognized upfront license fee  and  the  premium on the equity
purchases) are classified as deferred reimbursements  on  the balance  sheet. As of December 31, 2017,
the Company recognized a liability of  $21.9 million  as deferred reimbursements, in  addition to
$1.3 million related to milestone payable to GSK in accounts payable, accrued expenses, and other
current  liabilities in the Consolidated Balance Sheets.

The recognition of Research Revenue was also affected by  the determination that the overall total

arrangement consideration was no longer  fixed  and determinable, despite the fact that the research

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

activities continued and that the research expense  reimbursements  by GSK to Amicus were received as
the research activities related to the reimbursement had  been completed. Therefore the research
reimbursements from GSK were recorded as deferred  reimbursements  on  the balance sheet  and would
not recognized until the total arrangement consideration becomes fixed and determinable.

As a  result, all revenue recognition was suspended  until the  total  arrangement consideration  would

become fixed and determinable. In addition, future  milestone  payments made by the Company  will be
applied against the balance of this deferred reimbursements  account. Revenue recognition for  research
expense reimbursements, the original  upfront license  fee, and the equity premiums will resume once
the total arrangement consideration becomes  fixed  and determinable which  will occur when  the balance
of the deferred reimbursements account is  sufficient to cover all the  remaining contingent  milestone
payments.

16. Earnings per Share

The following table provides a reconciliation  of the  numerator and  denominator used in  computing
basic  and diluted net loss attributable to common stockholders per common share  (in  thousands except
share amounts):

Historical

Numerator:
Net loss attributable to common stockholders . . . . . . . . .

Denominator:
Weighted average common shares outstanding —  basic

Years Ended December 31,

2017

2016

2015

$

(284,002) $

(200,042) $

(132,118)

and diluted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

153,355,144

134,401,588

109,923,815

Dilutive  common stock equivalents would  include the dilutive effect of common stock options,
convertible debt units, RSUs and warrants for common stock equivalents. Potentially  dilutive common
stock equivalents were excluded from the  diluted earnings  per  share denominator for all periods
because of their anti-dilutive effect. For the  year ended 2017 there was 40.9 million potential common
shares outstanding as a result of the  convertible debt that was excluded  from the diluted net loss per
share calculation because their effect would have  been anti-dilutive.

The table below presents potential shares  of common stock that were excluded  from the

computation as they were anti-dilutive using the treasury stock method (in  thousands):

Options to purchase common stock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convertible debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outstanding warrants, convertible to common stock . . . . . . . . . . . . . . . . . .
Unvested restricted stock units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vested restricted stock units, unissued . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15,181
40,850
3,110
2,575
50

15,528
40,850
3,110
744
—

11,729
—
1,350
479
—

Total number of potentially issuable shares . . . . . . . . . . . . . . . . . . . . . . .

61,766

60,232

13,558

Year ended December 31,

2017

2016

2015

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

17. Commitments and Contingencies

Since  October 1, 2015, three purported securities class action  lawsuits were  filed in  the United
States District Court for New Jersey, naming as defendants the Company, its Chairman  and Chief
Executive Officer, and in one of the actions,  its Chief Medical Officer. The lawsuits alleged  violations
of the Securities Exchange Act of 1934 in  connection  with allegedly false and misleading statements
made by the Company related to the regulatory approval path for migalastat. The  plaintiffs  sought,
among other things, damages for purchasers  of the  Company’s Common Stock during different periods,
all of which fall between March 19, 2015 and October 1, 2015. On May  26, 2016,  the Court
consolidated these lawsuits into a single action  entitled In  re Amicus Therapeutics, Inc.  Shareholder
Litigation (C.A. # 3:15-cv-07350) and appointed a lead  plaintiff. The lead plaintiff filed a Consolidated
Amended Class Action Complaint on  July  11, 2016. On August  25, 2016,  the Company and  other
defendants filed a motion to dismiss in  response to the Consolidated Amended Class Action
Complaint. This motion to dismiss was  fully briefed on October  28, 2016. Before the motion was
decided, the lead plaintiff and defendants entered  into  a  Stipulation  and Agreement of Settlement
dated April 14, 2017. Thereafter, on June 29,  2017, the Court entered an order granting  preliminary
approval of the Settlement. On November 9,  2017, the Court conducted a fairness hearing  and on
November 15, 2017, entered an Order and  Final Judgment approving the Settlement. Among  other
provisions, the Settlement provides defendants with  a  release of all  claims and  involves  the creation of
a Settlement Fund for class members in the amount of  $3.8  million. The majority  of the amount was
covered under insurance and any out of pocket expenses were immaterial to the Company’s
consolidated financial statements.

On or about March 3, 2016, a derivative  lawsuit was filed  by an Amicus shareholder  purportedly

on Amicus’ behalf in the Superior Court of New Jersey, Middlesex County, Chancery Division, against
various officers and directors of the Company.  Amicus  itself is named  as a  nominal defendant.  The
derivative lawsuit alleges similar facts and circumstances as the three purported  securities class action
lawsuits described above and further  alleges claims  for breach  of state  law fiduciary  duties, waste of
corporate assets, unjust enrichment, abuse of control, and gross  mismanagement  based on  allegedly
false  and misleading statements made by Amicus related to the regulatory approval path for migalastat
HCl.  The plaintiff seeks, among other things, to require the Amicus Board to take certain actions  to
reform its corporate governance procedures, including greater  shareholder input and  a provision  to
permit shareholders to nominate candidates for  election to the  Board, along  with restitution, costs of
suit and attorney’s fees. On February 7, 2017, the complaint  was  dismissed by the  Court without
prejudice.

These lawsuits and any other related lawsuits  are  subject to  inherent uncertainties and the actual

cost will depend upon many unknown factors.  The outcome of  any litigation  is necessarily uncertain
and  we could be forced to expend significant resources in the defense of these lawsuits, and we  may
not prevail.

18. Subsequent Events

On February 15, 2018, the Company announced the pricing of an underwritten offering of

19,354,839 shares of its common stock  at $15.50 per shares,  resulting in gross proceeds of
$300.0 million, before deducting underwriting discounts and  commissions and offering expenses  payable
by the Company. The offering closed on February 21, 2018 and the  Company received net proceeds of
$282.0 million from the Offering, after deducting underwriting discounts  and  commissions and offering
expenses  payable by the Company. J.P.  Morgan Securities  LLC and Goldman Sachs & Co. LLC were
acting as joint lead book-running managers, Cowen and Leerink Partners were acting as

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Amicus Therapeutics, Inc.

Notes To Consolidated Financial Statements — (Continued)

co-book-running managers, and BofA Merrill  Lynch was  acting as lead  co-manager  for the  offering.
The Company expects to use the net proceeds of the offering for investment in the U.S. and
international commercial infrastructure for migalastat HCl, investment  in manufacturing  capabilities  for
ATB200, the continued clinical development of its product candidates, research and development
expenditures, clinical and pre-clinical trial expenditures, commercialization expenditures and  for other
general corporate purposes. The securities described above are being offered by the Company pursuant
to a registration statement previously filed with the  U.S. Securities and Exchange Commission (the
‘‘SEC’’) on April 29, 2016, which became effective automatically  upon  the filing  thereof.

19. Selected Quarterly Financial Data (Unaudited — in  thousands except per share data)

Quarters Ended

March 31

June 30

September 30

December 31

2017
Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic and diluted net loss per common share  (1)
. . . . .
2016
Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic and diluted net loss per common share  (1)
. . . . .

$(54,992) $(48,136)
(0.34)
$

(0.39) $

$(111,666)
(0.69)
$

$(69,208)
(0.42)
$

$(43,691) $(51,050)
(0.40)

(0.35)

$ (46,654)
(0.33)

$(58,647)
(0.41)

(1) Per common share amounts for the  quarters and full years have been calculated separately.

Accordingly, quarterly amounts do not  add  to  the annual  amounts  because of  differences on  the
weighted-average common shares outstanding during each period  principally due to the  effect of
the Company issuing shares of its common  stock  during the year.

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Item 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING  AND

FINANCIAL DISCLOSURE.

None.

Item 9A. CONTROLS AND PROCEDURES.

Evaluation of Disclosure Controls and  Procedures

Our management, with the participation of our principal executive officer and principal financial

officer, evaluated the effectiveness of our disclosure controls and procedures  as of December 31, 2017.
The term ‘‘disclosure controls and procedures,’’ as defined in Rules 13a-15(e) and 15d-15(e) under the
Exchange Act, means controls and other  procedures  of a company that are designed  to  ensure that
information required to be disclosed  by  us  in the reports that  we  file  or submit under the Exchange Act
is recorded, processed, summarized and  reported within the time periods specified in the  SEC rules
and forms. Disclosure controls and procedures include, without limitation,  controls and  procedures
designed to ensure that information required  to  be  disclosed by  a company  in the reports  that  it files  or
submits under the Exchange Act is accumulated and communicated to the company’s management,
including its principal executive and principal financial officers, as appropriate to allow timely decisions
regarding required disclosure. Management recognizes that any controls and  procedures,  no matter how
well designed and operated, can provide  only  reasonable  assurance of achieving their objectives and
management necessarily applies its judgment in  evaluating the cost-benefit relationship of possible
controls and procedures. Based on the evaluation of  our disclosure  controls and procedures as of
December 31, 2017, our principal executive officer and principal financial officer  concluded that, as of
such date, our disclosure controls and  procedures were effective at the reasonable assurance  level.

There have been no changes in our internal controls over financial reporting during the  fourth
quarter of the year ended December 31,  2017 that have materially  affected,  or are reasonably likely to
materially affect, our internal controls over financial reporting.

Management’s Report on Internal Control Over  Financial Reporting

The information required by this section which includes the  ‘‘Management’s Report on

Consolidated Financial Statements and Internal  Control over Financial Reporting’’  and the  ‘‘Report  of
Independent Registered Public Accounting Firm’’  are incorporated  by reference from ‘‘Item 8.
Financial Statements and Supplementary Data.’’

Item 9B. OTHER INFORMATION.

None.

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PART III

Certain information required by Part III is  omitted  from this Annual Report on  Form 10-K as we
intend to file our definitive proxy statement for our 2018 annual  meeting  of  stockholders,  pursuant to
Regulation 14A of the Securities Exchange  Act, not later than 120 days  after the end of  the fiscal year
covered by this Annual Report on Form  10-K, and certain information to be included in the proxy
statement is incorporated herein by reference.

Item 10. DIRECTORS, EXECUTIVE OFFICERS OF THE REGISTRANT AND CORPORATE

GOVERNANCE.

The information required by this item  is incorporated by reference  from the Proxy Statement
under the caption ‘‘Management,’’ ‘‘Section 16(a) Beneficial  Ownership Reporting Compliance,’’ and
‘‘Proposal No. 1 — Election of Directors’’

We have adopted a Code of Business Ethics  and Conduct for  Employees, Executive  Officers  and
Directors that applies to our employees, officers  and directors and incorporate guidelines designed to
deter wrongdoing and to promote the honest and ethical conduct and compliance with applicable laws
and  regulations. In addition, the code  of  ethics incorporates our guidelines pertaining  to  topics  such as
conflicts of interest and workplace behavior. We have  posted the text of our code on our  website at
www.amicusrx.com in connection with ‘‘Investors/Corporate Governance’’ materials. In addition, we
intend to promptly disclose (1) the nature of  any amendment to our  code of ethics that applies to our
principal executive officer, principal financial  officer,  principal  accounting officer or controller,  or
persons performing similar functions and (2)  the  nature  of any waiver,  including an implicit waiver,
from provision of our code of ethics that is granted to one of these  specified officers, the  name of such
person who is granted the waiver and the date  the waiver on our website in the future.

Item 11. EXECUTIVE COMPENSATION.

The information required by this item is  incorporated by reference  from the Proxy Statement

under the caption ‘‘Compensation Discussion  and  Analysis.’’

Item 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL  OWNERS  AND MANAGEMENT  AND

RELATED STOCKHOLDER MATTERS.

The information required by this item  is incorporated by reference  from the Proxy Statement
under the captions ‘‘Security Ownership of Certain Beneficial  Owners and Management and Related
Stockholder Matters’’ and ‘‘Equity Compensation Plan Information.’’

Item 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND  DIRECTOR

INDEPENDENCE.

The information required by this item  is incorporated by reference  from the Proxy Statement

under the captions ‘‘Certain Relationships  and Related Transactions,’’ ‘‘Director  Independence,’’
‘‘Committee Compensation and Meetings  of the Board  of Directors,’’ and ‘‘Compensation Committee
Interlock and Insider Participation.’’

Item 14. PRINCIPAL ACCOUNTING FEES AND  SERVICES.

The information required by this item is  incorporated by reference  from the Proxy Statement.

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Item 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULE

(a) 1. Consolidated Financial Statements

PART IV

The Consolidated  Financial Statements are filed  as part  of this report.

2. Consolidated Financial Statement Schedules

All schedules are omitted because they  are  not  required or because the required information is

included in the Consolidated Financial Statements or notes  thereto.

3. Exhibits

Exhibit
No.

Filed Exhibit Description

Form

Date

Exhibit No.

Incorporated by Reference
to SEC Filing

Filed with this
Form 10-K

2.1 Agreement and Plan of Merger, dated Form 8-K

2/12/2014

2.1

November 19, 2013, by and among
Amicus Therapeutics, Inc., CB
Acquisition Corp., Callidus
BioPharma, Inc., and Cuong Do

+2.2 Agreement and Plan of Merger,  dated Form 8-K

9/3/15

2.1

August  30, 2015, by and among the
Registrant, Titan Merger Sub Corp.
and Scioderm, Inc.

2.3 Amendment to Agreement and Plan of Form 8-K

9/30/15

2.2

Merger, dated September 30, 2015, by
and among the Registrant, Titan
Merger Sub Corp. and Scioderm, Inc.

+2.4 Agreement and Plan of Merger,  dated Form 8-K

7/6/16

2.1

July 5, 2016, by and among
MiaMed, Inc., the Registrant and
Minervas Merger Sub, Inc.

3.1 Restated Certificate of Incorporation

Form 10-K

2/28/12

of the Registrant.

3.2 Restated By-laws of the Registrant.

S-1/A (333-141700)

4/27/07

3.3 Certificate of Amendment to the

Form 8-K

6/10/2015

Registrant’s Restated Certificate of
Incorporation, as amended.

4.1 Specimen Stock Certificate evidencing

S-1 (333-141700)

3/30/07

shares of common stock

4.2 Third Amended and Restated Investor S-1 (333-141700)

3/30/07

Rights Agreement, dated as of
September 13, 2006, as amended

4.4 Form of Warrant, issued on October  1, Form 8-K

2015

4.5 Form of Warrant to Purchase Common Form 8-K

Stock

10/1/15

2/22/16

3.1

3.4

3.1

4.1

4.2

4.1

4.1

-144-

Exhibit
No.

Filed Exhibit Description

Form

Date

Exhibit No.

Incorporated by Reference
to SEC Filing

Filed with this
Form 10-K

4.6 Form of Warrant to Purchase Common Form 8-K

7/1/16

Stock

4.7 Form of Indenture

4.8 Indenture, dated December 21, 2016,
by and between the Registrant and
Wilmington Trust, National Association

*10.1 2002 Equity Incentive Plan, as
amended, and forms of option
agreements thereunder

Form S-3ASR

Form 8-K

4/29/16

12/21/16

4.1

4.7

4.1

S-1/A (333-141700)

4/27/07

10.1

+10.2 Amended and Restated License

Form 10-K

2/6/09

10.3

Agreement, dated October, 31, 2008,
by and between the Registrant and
Mount Sinai School of Medicine of
New York University

+10.3 License Agreement, dated as of

S-1 (333-141700)

3/30/07

10.4

June 26, 2003, by and between the
Registrant and University of Maryland,
Baltimore County, as amended

+10.4 Exclusive License Agreement,  dated  as S-1  (333-141700)

3/30/07

10.5

of June 8, 2005, by and between the
Registrant and Novo Nordisk, A/S

10.6 Form of Director and Officer

S-1 (333-141700)

3/30/07

10.17

Indemnification Agreement

*10.7 Amended and Restated 2007 Director Form 8-K

6/18/10

10.2

Option Plan and form of option
agreement

*10.8 2007 Employee Stock Purchase  Plan

S-1/A (333-141700)

5/17/07

*10.11 Management Bonus Program Summary Form 8-K

*10.12 Letter Agreement, dated as of  May 10, Form 10-K

6/9/16

3/4/11

10.24

10.1

10.32

2010 by and between the Registrant
and Ken Valenzano

*10.14 Letter Agreement, dated as of

Form 10-K

3/4/11

10.34

January 3, 2011 by and between the
Registrant and Enrique Dilone

10.15 Lease Agreement dated August 16,

Form 8-K

8/16/11

10.1

2011 between the Registrant and
Cedar Brook 3 Corporate Center, L.P.

*10.18 Letter Agreement, dated as of  June 5, Form 10-Q

8/7/13

10.6

2013 by and between the Registrant
and Jeffrey P. Castelli

*10.19 Letter Agreement, dated as of  June 5, Form 10-Q

8/7/13

10.7

2013 by and between the Registrant
and Jayne Gershkowitz

-145-

Exhibit
No.

Filed Exhibit Description

Form

Date

Exhibit No.

Incorporated by Reference
to SEC Filing

Filed with this
Form 10-K

10.20 Securities Purchase Agreement,  dated
November 20, 2013 by and among the
Company and the purchasers identified
therein

Form 8-K

11/20/13

10.1

10.21 Credit and Security Agreement, by and Form 8-K

12/30/13

10.1

between MidCap Funding III, LLC, as
administrative agent, the Lenders listed
in the Credit Facility Schedule thereto,
the Registrant, and Callidus
Biopharma, Inc., dated as of
December 27, 2013

+10.23 Second Restated Agreement,  dated
November 19, 2013 by and between
the Registrant and Glaxo Group
Limited

Form 10-K

3/3/14

10.46

*10.24 Amicus Therapeutics, Inc. Cash

Form 8-K

7/2/14

10.1

Deferral Plan

10.25 Amendment No.1 to the Amicus

Form 8-K

10/16/14

10.1

Therapeutics, Inc. Cash Deferral Plan

*10.26 Employment Agreement dated

Form 8-K

4/25/14

10.1

April 23, 2014, between the Registrant
and John F. Crowley

*10.27 Employment Agreement dated

Form 8-K

4/25/14

10.2

April 23, 2014, between the Registrant
and William D. Baird, III

*10.28 Employment Agreement dated

Form 8-K

4/25/14

10.3

April 23, 2014, between the Registrant
and Bradley L. Campbell

*10.29 Employment Agreement dated

Form 10-Q

5/5/14

10.6

April 23, 2014, between the Registrant
and Jay Barth, M.D.

*10.30 Letter Agreement dated April 24,
2014, between the Registrant and
Julie Yu

*10.31 Letter Agreement dated April 30,
2014, between the Registrant and
Daphne Quimi

Form 10-Q

5/5/14

10.7

Form 10-Q

5/5/14

10.8

*10.32 Amended and Restated 2007 Equity

Form 8-K

6/13/16

10.1

Incentive Plan

*10.33 Amicus Therapeutics, Inc. Cash

Form 8-K

10/28/16

10.1

Deferral Plan

*10.34 Employment Agreement dated

Form 10-K

2/29/16

10.37

December 17, 2015 between the
Registrant and Hung Do

-146-

Exhibit
No.

Filed Exhibit Description

Form

Date

Exhibit No.

Incorporated by Reference
to SEC Filing

Filed with this
Form 10-K

*10.35 Employment Agreement dated

Form 10-K

2/29/16

10.38

December 17, 2015 between the
Registrant and Dipal Doshi

*10.36 Amendment No. 1 to the Amicus

Form 8-K

10/16/14

10.1

Therapeutics, Inc. Cash Deferral Plan

10.37 First Amendment to Credit and

Form 8-K

4/28/15

10.1

Security  Agreement by and between
MidCap Funding III, LLC, as
administrative agent, the Lenders listed
in the Credit Facility Schedule thereto,
the Registrant, and Callidus
Biopharma, Inc., dated as of April 27,
2015.

10.38 Note and Warrant Purchase

Form 8-K

10/1/15

10.1

Agreement by and among the
Registrant and the purchasers
identified on the signature pages
thereto, dated October 1, 2015

10.39 First Amendment to Lease, dated

Form 8-K

9/14/15

10.1

September 9, 2015, by and between
Cedar Brook 3 Corporate Center, L.P.
and the Registrant

10.40 Sales Agreement, dated February  26,
2016, by and between the Registrant
and Cowen and Company, LLC

Form 8-K

2/26/16

10.1

*10.41 Retention Bonus Letter, dated

Form 8-K

3/15/16

10.1

March 10, 2016, by and between the
Registrant and Jay Barth, M.D.

10.42 Note and Warrant Purchase

Form 8-K

2/22/16

10.1

Agreement by and among the
Registrant and the purchasers
identified on the signature pages
thereto, dated February 19, 2016.

10.43 Joinder to and Amendment of Note
and Warrant Purchase Agreement by
and among Amicus Therapeutics, Inc.,
Amicus Therapeutics UK Limited,
Amicus Therapeutics International
Holding LTD and the purchasers
identified on the signature pages
thereto, dated as of June 30, 2016

Form 8-K

7/1/16

10.2

*10.44 Amendment No. 1 to the Amended

Form 8-K

7/29/16

10.1

and Restated Amicus
Therapeutics, Inc. 2007 Equity
Incentive Plan

-147-

Exhibit
No.

Filed Exhibit Description

Form

Date

Exhibit No.

Incorporated by Reference
to SEC Filing

Filed with this
Form 10-K

*10.45 Secondment Letter, dated August 22,

Form  8-K

8/23/16

10.1

2016 by and between the Registrant
and Bradley Campbell

10.46 Base Capped Call Transaction, dated
December 15, 2016, by and between
the Registrant and Goldman,
Sachs & Co.

10.47 Base Capped Call Transaction, dated
December 15, 2016, by and between
the Registrant and JPMorgan Chase
Bank, National Association

10.48 Base Capped Call Transaction, dated
December 15, 2016, by and between
the Registrant and Royal Bank of
Canada

Form 8-K

12/21/16

10.1

Form 8-K

12/21/16

10.2

Form 8-K

12/21/16

10.3

10.49 Additional Capped Call Transaction,

Form 8-K

12/21/16

10.4

dated December 19, 2016, by and
between the Registrant and Goldman,
Sachs & Co.

10.50 Additional Capped Call Transaction,

Form 8-K

12/21/16

10.5

dated December 19, 2016, by and
between the Registrant and JPMorgan
Chase Bank, National Association

10.51 Additional Capped Call Transaction,

Form 8-K

12/21/16

10.6

dated December 19, 2016, by and
between the Registrant and Royal
Bank of Canada

10.52 Note Purchase Agreement, dated

Form 8-K

12/21/16

10.7

December 15, 2016, by and among the
Registrant, Amicus Therapeutics
International Holding LTD and
P Redmile Ltd.

10.53 Note Purchase Agreement, dated

Form 8-K

12/21/16

10.8

December 15, 2016, by and among the
Registrant, Amicus Therapeutics
International Holding LTD and
Redmile Capital Offshore Fund, Ltd.

10.54 Note Purchase Agreement, dated
December 15, 2016, by among the
Registrant, Amicus Therapeutics
International Holding LTD and
Redmile Capital Offshore Fund
II, Ltd.

Form 8-K

12/21/16

10.9

-148-

Exhibit
No.

Filed Exhibit Description

Form

Date

Exhibit No.

Incorporated by Reference
to SEC Filing

Filed with this
Form 10-K

10.55 Note Purchase Agreement, dated

Form 8-K

12/21/16

10.10

December 15, 2016, by and among the
Registrant, Amicus Therapeutics
International Holding LTD and
Redmile Special Opportunities
Fund, Ltd.

10.56 Note Purchase Agreement, dated

Form 8-K

12/21/16

10.11

December 15, 2016, by and among the
Registrant, Amicus Therapeutics
International Holding LTD and
Redmile Capital Fund, LP

10.57 Note Purchase Agreement, dated

Form 8-K

12/21/16

10.12

December 15, 2016, by and between
Amicus Therapeutics International
Holding LTD and GCM Grosvenor
Special Opportunities Master
Fund, Ltd.

*10.58 Form of Performance-Based Restricted Form 8-K

12/30/16

10.1

Stock Unit Award Agreement under
the Amended and Restated 2007
Equity Incentive Plan

21 List of Subsidiaries

23.1 Consent of Independent Registered

Public Accounting Firm.

31.1 Certification of Principal Executive

Officer Pursuant to Rule 13a-14(a) of
the Securities Exchange Act of 1934.

31.2 Certification of Principal Financial

Officer Pursuant to Rule 13a-14(a) of
the Securities Exchange Act of 1934.

32.1 Certificate of Principal Executive
Officer pursuant to 18 U.S.C.
Section  1350 and Section 906 of the
Sarbanes-Oxley Act of 2002.

32.2 Certificate of Principal Financial

Officer pursuant to 18 U.S.C.
Section  1350 and Section 906 of the
Sarbanes-Oxley Act of 2002.

-149-

X

X

X

X

X

X

Filed with this
Form 10-K

X

Exhibit
No.

Filed Exhibit Description

Form

Date

Exhibit No.

Incorporated by Reference
to SEC Filing

101 The following financial information

from this Annual Report on
Form 10-K for the year ended
December 31, 2017, formatted in
XBRL (Extensible Business Reporting
Language) and filed electronically
herewith: (i) the Consolidated Balance
Sheets; (ii) the Consolidated
Statements of Operations; (iii) the
Consolidated Statements of
Comprehensive Loss; (iv) the
Consolidated Statements of Cash
Flows; (v) and the Notes to the
Consolidated Financial Statements.

+ Confidential treatment has been  granted as to certain  portions of the document, which portions

have been omitted and filed separately with the  Securities and  Exchange Commission.

*

Indicates management contract or compensatory plan.

-150-

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 on March 1, 2018.

SIGNATURES

AMICUS THERAPEUTICS, INC.
(Registrant)

By: /s/

John F. Crowley

John F. Crowley
Chief Executive Officer

Pursuant to the requirements of the Securities Exchange  Act of 1934,  this Report has been  signed

below by the following persons on behalf of  the Registrant and in the capacities and on the dates
indicated.

Signature

Title

Date

/s/

John F. Crowley

(John F. Crowley)

/s/ William D. Baird III

(William D. Baird III)

/s/ Daphne Quimi

(Daphne Quimi)

/s/ Robert Essner

(Robert Essner)

/s/ Donald J. Hayden

(Donald J. Hayden)

/s/ Ted W. Love, M.D.

(Ted W. Love, M.D.)

Chairman and Chief Executive Officer March 1, 2018
(Principal Executive Officer)

Chief Financial Officer
(Principal Financial Officer)

March 1, 2018

Sr. Vice President, Finance
(Principal Accounting Officer)

March 1,  2018

Director

March 1, 2018

Director

March 1,  2018

Director

March 1, 2018

/s/ Margaret G. McGlynn, R.Ph.

Director

March 1, 2018

(Margaret G. McGlynn, R.Ph.)

-151-

Signature

Title

Date

/s/ Michael G. Raab

(Michael G. Raab)

/s/ Glenn Sblendorio

(Glenn  Sblendorio)

/s/ Craig Wheeler

(Craig  Wheeler)

Director

March 1, 2018

Director

March 1, 2018

Director

March 1,  2018

-152-

List of Subsidiaries of the Registrant

EXHIBIT 21

Amicus Therapeutics International Holding  Limited  (UK)
Amicus Therapeutics UK Limited (UK)
Amicus Therapeutics SAS (France)
Amicus Therapeutics B.V. (Netherlands)
Amicus Therapeutics GmbH (Germany)

Callidus Biopharma, Inc. (Delaware)
Scioderm, Inc. (Delaware)
Scioderm Limited (Ireland)

1.
2.
3.
4. MiaMed, Inc. (Delaware)
5.
6.
7.
8.
9.
10. Amicus Therapeutics S.L.U. (Spain)
11. Amicus Therapeutics S.r.l. (Italy)
12. Amicus Therapeutics K.K. (Japan)
13. Amicus Therapeutics Canada Inc. (Canada)
14. Amicus Therapeutics PTY LTD  (Australia)
15. Amicus Therapeutics US, Inc. (Delaware)

EXHIBIT 23.1

Consent of Independent Registered Public Accounting Firm

We  consent to the  incorporation by reference in  the following Registration Statements:

1. Registration Statement (Form S-3ASR No. 333-212414) pertaining  to  the Amicus

Therapeutics, Inc., Automatic shelf registration statement of securities  of well-known  seasoned
issuers

2. Registration Statement (Form S-3ASR No. 333-211005) pertaining  to  the Amicus

Therapeutics, Inc., Automatic shelf registration statement of securities  of well-known  seasoned
issuers

3. Registration Statement (Form S-3ASR No. 333-207210) pertaining  to  the Amicus

Therapeutics, Inc., Automatic shelf registration statement of securities  of well-known  seasoned
issuers

4. Registration Statement (Form S-8 No. 333-197202)  pertaining  to  the Amicus

Therapeutics, Inc. Cash Deferral Plan,

5. Registration Statement (Form S-8 No. 333-195194)  pertaining  to  the Amicus

Therapeutics, Inc. Restricted Stock Unit  Deferral Plan,

6. Registration Statement (Form S-8 No. 333-145305)  pertaining  to  the: 1) Amicus

Therapeutics, Inc. 2002 Equity Incentive Plan, as Amended, 2) Amicus Therapeutics, Inc. 2007
Equity Incentive Plan, 3) Amicus Therapeutics, Inc. 2007 Director Option Plan, 4) Amicus
Therapeutics, Inc. 2007 Employee Stock Purchase Plan,

7. Registration Statement (Form S-8 No. 333-157219)  pertaining  to  the: 1) Amicus

Therapeutics, Inc. Amended and Restated 2007 Equity Incentive Plan and 2) Amicus
Therapeutics, Inc. 2007 Director Option Plan,

8. Registration Statement (Form S-8 No. 333-174900)  pertaining  to  the: 1) Amicus

Therapeutics, Inc. Amended and Restated 2007 Equity Incentive Plan and 2) Amicus
Therapeutics, Inc. Amended and Restated 2007 Director Option Plan;

of our reports dated March 1, 2018 with  respect to the consolidated financial statements of
Amicus Therapeutics, Inc., and the effectiveness  of  internal control over financial reporting of
Amicus Therapeutics, Inc. included in this Annual Report (Form 10-K)  of Amicus
Therapeutics, Inc. for the year ended  December 31, 2017.

/s/ Ernst & Young LLP

Iselin,  New Jersey
March 1, 2018

EXHIBIT 31.1

CERTIFICATIONS PURSUANT TO  SECTION 302 OF
THE SARBANES-OXLEY ACT OF 2002
CERTIFICATION BY PRINCIPAL EXECUTIVE  OFFICER

I, John F. Crowley, certify that:

1. I have reviewed this annual report  on Form 10-K  of  Amicus Therapeutics, Inc.;

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(s) 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;

5. The registrant’s other certifying officer(s) 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.

Date: March 1, 2018

/s/ John F. Crowley

John F. Crowley
Chairman and Chief Executive Officer

EXHIBIT 31.2

CERTIFICATIONS PURSUANT TO  SECTION 302 OF
THE SARBANES-OXLEY ACT OF 2002
CERTIFICATION BY PRINCIPAL FINANCIAL OFFICER

I, William D. Baird III, certify that:

1. I have reviewed this annual report  on Form  10-K of Amicus Therapeutics, Inc.;

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(s) 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;

5. The registrant’s other certifying officer(s) 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.

Date: March 1, 2018

/s/ William D. Baird III

William D. Baird III
Chief Financial Officer

EXHIBIT 32.1

Certification by the Principal Executive Officer Pursuant to 18 U. S. C. Section 1350, as
Adopted Pursuant to Section 906 of the Sarbanes-Oxley  Act of 2002

Pursuant to 18 U. S. C. Section 1350, I,  John  F.  Crowley, hereby certify that,  to  the best of  my
knowledge, Amicus Therapeutics Inc., (the ‘‘Company’’)  Annual Report on Form 10-K  for the  year
ended December 31, 2016 (the ‘‘Report’’),  as filed with the  Securities and Exchange  Commission on
March 1, 2018, fully complies with the requirements of  Section 13(a) or Section 15(d) of  the Securities
Exchange Act of 1934, as amended, and that the information contained in  the Report fairly presents, in
all material respects, the financial condition and results  of  operations of the  Company.

/s/ John F. Crowley

John F. Crowley
Chairman and Chief Executive Officer
March 1, 2018

EXHIBIT 32.2

Certification by the Principal Financial Officer  Pursuant to 18 U. S. C.  Section 1350, as
Adopted Pursuant to Section 906 of  the Sarbanes-Oxley Act of 2002

Pursuant to 18 U. S. C. Section 1350, I,  William  D.  Baird  III, hereby certify that, to the  best of my
knowledge, the Amicus Therapeutics Inc. (the ‘‘Company’’) Annual  Report on Form  10-K for  the year
ended December 31, 2016 (the ‘‘Report’’),  as filed with the  Securities and Exchange  Commission on
March 1, 2018, fully complies with the requirements of  Section 13(a) or Section 15(d) of  the Securities
Exchange Act of 1934, as amended, and that the information contained in  the Report fairly presents, in
all material respects, the financial condition and results  of  operations of the  Company.

/s/ William D. Baird III

William D. Baird III
Chief Financial Officer
March 1, 2018