SEC Filing | Amicus Therapeutics

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended June 30, 2013

o 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		71-0869350
(State or Other Jurisdiction of		(I.R.S. Employer
Incorporation or Organization)		Identification Number)

1 Cedar Brook Drive, Cranbury, NJ 08512

(Address of Principal Executive Offices and Zip Code)

Registrant’s Telephone Number, Including Area Code: (609) 662-2000

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 x No o

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 x No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller-reporting company. See definition of “large accelerated filer,” accelerated filer” and “smaller-reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer x		Accelerated filer o

Non-accelerated filer o		Smaller Reporting Company o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act): Yes o No x

The number of shares outstanding of the registrant’s common stock, $.01 par value per share, as of July 31, 2013 was 49,631,672 shares.

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AMICUS THERAPEUTICS, INC

Form 10-Q for the Quarterly Period Ended June 30, 2013

		Page

PART I. FINANCIAL INFORMATION		4

Item 1.	Financial Statements (unaudited)	4

	Consolidated Balance Sheets as of December 31, 2012 and June 30, 2013	4

	Consolidated Statements of Operations for the Three and Six Months Ended June 30, 2012 and 2013, and period February 4, 2002 (inception) to June 30, 2013	5

	Consolidated Statements of Comprehensive Loss for the Three and Six Months Ended June 30, 2012 and 2013, and period February 4, 2002 (inception) to June 30, 2013	6

	Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2012 and 2013, and period February 4, 2002 (inception) to June 30, 2013	7

	Notes to Consolidated Financial Statements	9

Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	20

Item 3.	Quantitative and Qualitative Disclosures about Market Risk	34

Item 4.	Controls and Procedures	34

PART II. OTHER INFORMATION		35

Item 1.	Legal Proceedings	35

Item 1A.	Risk Factors	35

Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	35

Item 3.	Defaults Upon Senior Securities	36

Item 4.	Mine Safety Disclosures	36

Item 5.	Other Information	36

Item 6.	Exhibits	37

SIGNATURES		38

INDEX TO EXHIBITS		39

We have registered or filed applications to register certain trademarks in the United States and abroad, including AMICUS™, AMICUS THERAPEUTICS™ (and design) and CHART™ (and design).

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This quarterly report on Form 10-Q contains forward-looking statements that involve substantial risks and uncertainties. All statements, other than statements of historical facts, included in this quarterly report on Form 10-Q 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,” “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 quarterly report on Form 10-Q include, among other things, statements about:

· the progress and results of our clinical trials of our drug candidates, including migalastat HCl;

· the continuation of our collaboration with GlaxoSmithKline PLC and GSK’s achievement of milestone payment thereunder;

· 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 diseases of neurodegeneration;

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

· the number and development requirements of other product candidates that we pursue;

· the costs of commercialization activities, including product marketing, sales and distribution;

· the emergence of competing technologies and other adverse market developments;

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

· the extent to which we acquire or invest in businesses, products and technologies; and

· 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 Part I Item 1A — “Risk Factors” of the Annual Report on Form 10-K for the year ended December 31, 2012 that we believe could cause actual results or events to differ materially from the forward-looking statements that we 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 quarterly report on Form 10-Q in conjunction with the documents that we reference herein. We do not assume any obligation to update any forward-looking statements.

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PART I. FINANCIAL INFORMATION

Item 1. Financial Statements (unaudited)

Amicus Therapeutics, Inc.

(a development stage company)

Consolidated Balance Sheets

(Unaudited)

(in thousands, except share and per share amounts)

	December 31,			June 30,
	2012			2013
Assets:
Current assets:
Cash and cash equivalents	$	33,971		$	23,476
Investments in marketable securities	65,151			50,700
Receivable due from GSK	3,225			1,024
Prepaid expenses and other current assets	2,270			1,978
Total current assets	104,617			77,178

Property and equipment, less accumulated depreciation and amortization of $8,501 and $9,321 at December 31, 2012 and June 30, 2013, respectively	5,029			4,715
Other non-current assets	442			442
Total Assets	$	110,088		$	82,335

Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable and accrued expenses	$	8,845		$	9,018
Current portion of secured loan	398			398
Warrant liability	—			551
Total current liabilities	9,243			9,967

Deferred reimbursements	30,418			32,709
Warrant liability, non-current	908			—
Secured loan, less current portion	299			100

Commitments and contingencies

Stockholders’ equity:
Common stock, $.01 par value, 125,000,000 shares authorized, 49,631,672 shares issued and outstanding at December 31, 2012, 125,000,000 shares authorized, 49,631,672 shares issued and outstanding at June 30, 2013	556			556
Additional paid-in capital	387,539			390,696
Accumulated other comprehensive income	14			3
Deficit accumulated during the development stage	(318,889		)	(351,696		)
Total stockholders’ equity	69,220			39,559
Total Liabilities and Stockholders’ Equity	$	110,088		$	82,335

See accompanying notes to consolidated financial statements

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Amicus Therapeutics, Inc.

(a development stage company)

Consolidated Statements of Operations

(Unaudited)

(in thousands, except share and per share amounts)

													Period from
													February 4,
													2002
	Three Months						Six Months						(inception)
	Ended June 30,						Ended June 30,						to June 30,
	2012			2013			2012			2013			2013
Revenue:
Research revenue	$	5,477		$	—		$	11,591		$	—		$	57,493
Collaboration and milestone revenue	5,160			—			6,820			—			64,382
Total revenue	$	10,637		$	—		$	18,411		$	—		$	121,875

Operating Expenses:
Research and development	$	13,723		$	10,725		$	27,727		$	22,714		$	338,607
General and administrative	5,819			4,830			9,914			9,653			142,266
Restructuring charges	—			—			—			—			1,522
Impairment of leasehold improvements	—			—			—			—			1,030
Depreciation and amortization	442			450			862			889			12,657
In-process research and development	—			—			—			—			418
Total operating expenses	19,984			16,005			38,503			33,256			496,500
Loss from operations	(9,347		)	(16,005		)	(20,092		)	(33,256		)	(374,625		)
Other income (expenses):
Interest income	116			46			143			111			14,500
Interest expense	(15		)	(9		)	(58		)	(19		)	(2,441		)
Change in fair value of warrant liability	(118		)	619			(2,494		)	357			1,910
Other income	21			—			21			—			252
Loss before tax benefit	(9,343		)	(15,349		)	(22,480		)	(32,807		)	(360,404		)
Income tax benefit	—			—			—			—			8,708
Net loss	(9,343		)	(15,349		)	(22,480		)	(32,807		)	(351,696		)
Deemed dividend	—			—			—			—			(19,424		)
Preferred stock accretion	—			—			—			—			(802		)
Net loss attributable to common stockholders	$	(9,343	)	$	(15,349	)	$	(22,480	)	$	(32,807	)	$	(371,922	)
Net loss attributable to common stockholders per common shares — basic and diluted	$	(0.20	)	$	(0.31	)	$	(0.53	)	$	(0.66	)
Weighted-average common shares outstanding — basic and diluted	46,870,067			49,621,188			42,103,642			49,621,188

See accompanying notes to consolidated financial statements

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Amicus Therapeutics, Inc.

(a development stage company)

Consolidated Statements of Comprehensive Loss

(Unaudited)

(in thousands, except share and per share amounts)

													Period from
													February 4,
													2002
	Three Months						Six Months						(inception)
	Ended June 30,						Ended June 30,						to June 30,
	2012			2013			2012			2013			2013

Net loss	$	(9,343	)	$	(15,349	)	$	(22,480	)	$	(32,807	)	$	(351,696	)

Other comprehensive (loss)/ income:

Unrealized (loss) gain on available- for-sale securities	(20		)	(12		)	13			(11		)	3

Other comprehensive (loss)/ income, before income taxes	(20		)	(12		)	13			(11		)	3

Provision for income taxes related to other (loss)/ comprehensive income items (a)	—			—			—			—			—

Other comprehensive (loss)/ income	$	(20	)	$	(12	)	$	13		$	(11	)	$	3

Comprehensive loss	$	(9,363	)	$	(15,361	)	$	(22,467	)	$	(32,818	)	$	(351,693	)

(a) — Taxes have not been accrued on unrealized gain on securities as the Company is in a loss position for all periods presented.

See accompanying notes to consolidated financial statements

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Amicus Therapeutics, Inc.

(a development stage company)

Consolidated Statements of Cash Flows

(Unaudited)

(in thousands)

							Period from
							February 4, 2002
	Six Months						(inception) to
	Ended June 30,						June 30,
	2012			2013			2013
Operating activities
Net loss	$	(22,480	)	$	(32,807	)	$	(351,696	)
Adjustments to reconcile net loss to net cash used in operating activities:
Non-cash interest expense	—			—			525
Depreciation and amortization	862			889			12,657
Amortization of non-cash compensation	—			—			522
Stock-based compensation - employees	3,145			3,157			45,086
Stock-based compensation - non-employees	—			—			853
Stock-based license payments	—			—			1,220
Change in fair value of warrant liability	2,494			(357		)	(1,910		)
Loss on disposal of asset	27			—			388
Impairment of leasehold improvements	—			—			1,030
Non-cash charge for in-process research and development	—			—			418
Beneficial conversion feature related to bridge financing	—			—			135
Changes in operating assets and liabilities:
Receivable from GSK	(2,194		)	2,201			(1,024		)
Prepaid expenses and other current assets	3,245			292			(1,978		)
Other non-current assets	267			—			(466		)
Accounts payable and accrued expenses	(641		)	173			9,018
Deferred reimbursements	(3,895		)	2,291			32,709
Net cash used in operating activities	(19,170		)	(24,161		)	(252,513		)
Investing activities
Sale and redemption of marketable securities	34,839			42,434			797,876
Purchases of marketable securities	(71,706		)	(27,994		)	(848,689		)
Purchases of property and equipment	(3,939		)	(575		)	(18,788		)
Net cash (used in)/ provided by investing activities	(40,806		)	13,865			(69,601		)
Financing activities
Proceeds from the issuance of preferred stock, net of issuance costs	—			—			143,022
Proceeds from the issuance of common stock and warrants, net of issuance costs	62,057			—			193,441
Proceeds from the issuance of convertible notes	—			—			5,000
Payments of capital lease obligations	—			—			(5,587		)
Payments of secured loan agreement	(726		)	(199		)	(4,255		)
Proceeds from exercise of stock options	840			—			3,341
Proceeds from exercise of warrants (common and preferred)	—			—			264
Proceeds from capital asset financing arrangement	—			—			5,611
Proceeds from secured loan arrangement	995			—			4,753
Net cash provided by/ (used in) financing activities	63,166			(199		)	345,590
Net increase/ (decrease) in cash and cash equivalents	3,190			(10,495		)	23,476
Cash and cash equivalents at beginning of period	25,668			33,971			—
Cash and cash equivalents at end of period	$	28,858		$	23,476		$	23,476

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Amicus Therapeutics, Inc.

(a development stage company)

Consolidated Statements of Cash Flows (continued)

(Unaudited)

(in thousands)

					Period from
					February 4, 2002
	Six Months				(inception) to
	Ended June 30,				June 30,
	2012		2013		2013
Supplemental disclosures of cash flow information
Cash paid during the period for interest	$	50	$	16	$	2,133
Non-cash activities
Conversion of warrants to common stock	$	—	$	—	$	386
Conversion of notes payable to Series B redeemable convertible preferred stock	$	—	$	—	$	5,000
Conversion of preferred stock to common stock	$	—	$	—	$	148,951
Accretion of redeemable convertible preferred stock	$	—	$	—	$	802
Beneficial conversion feature related to the issuance of Series C redeemable convertible preferred stock	$	—	$	—	$	19,424

See accompanying notes to consolidated financial statements

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Note 1. Description of Business and Significant Accounting Policies

Corporate Information, Status of Operations and Management Plans

Amicus Therapeutics, Inc. (the Company) was incorporated on February 4, 2002 in Delaware and is a biopharmaceutical company focused on the discovery, development and commercialization of next-generation medicines for a range of rare and orphan diseases, with a focus on improved therapies for lysosomal storage diseases (LSDs). The Company’s lead program is migalastat HCl for Fabry disease. Migalastat HCl is a novel, small molecule pharmacological chaperone in development as a monotherapy and in combination with enzyme replacement therapy (ERT) for Fabry disease. The Company is leveraging its Chaperone-Advanced Replacement Therapy, or (CHART™ ) platform to develop next-generation therapies that combine pharmacological chaperones with enzyme therapies for Pompe, Mucopolysaccharidosis Type I (MPS I) and Gaucher diseases. Current CHART™ programs for Pompe disease include the pharmacological chaperone AT2220 (duvoglustat HCl) co-administered with currently marketed Pompe ERTs (Myozyme®/Lumizyme®), as well as AT2220 co-formulated with a proprietary Pompe ERT. The Company’s activities since inception have consisted principally of raising capital, establishing facilities, and performing research and development. Accordingly, the Company is considered to be in the development stage.

On July 17, 2012, the Company entered into an Amended and Restated License and Expanded Collaboration Agreement (the “Expanded Collaboration Agreement”) with an affiliate of GlaxoSmithKline PLC (GSK) pursuant to which the Company and GSK continue to develop and commercialize migalastat HCl for the treatment of Fabry disease. The Expanded Collaboration Agreement amends and replaces in its entirety the License and Collaboration Agreement entered into between the Company and GSK on October 28, 2010 (the “Original Collaboration Agreement”) for the development and commercialization of migalastat HCl. Under the terms of the Expanded Collaboration Agreement, the Company and GSK are co-developing all formulations of migalastat HCl for Fabry disease, including migalastat HCl monotherapy, currently in Phase 3 development, as well as migalastat HCl co-formulated with an investigational ERT for Fabry disease (the “Co-formulated Product”). The Co-formulated Product is being developed by the Company and GSK in collaboration with JCR Pharmaceutical Co. Ltd. The Company will commercialize all migalastat HCl products for Fabry disease in the United States while GSK will commercialize all such products in the rest of the world.

The Company and GSK jointly fund development costs for all formulations of migalastat HCl in accordance with agreed upon development plans pursuant to which the Company and GSK fund 40% and 60% of such costs, respectively, for 2013 and through the end of the development plans. Additionally, simultaneous with entry into the Expanded Collaboration Agreement, the Company and GSK entered into a Stock Purchase Agreement (the “SPA”) pursuant to which GSK purchased approximately 2.9 million shares of Amicus common stock at a price of $6.30 per share. The total value of this equity investment to the Company is approximately $18.6 million. As of June 30, 2013, GSK’s ownership position in the Company is 19.8%.

For further information, see “— Note 7. Collaborative Agreements”

The Company had an accumulated deficit of approximately $351.7 million at June 30, 2013 and anticipates incurring losses through the year 2013 and beyond. The Company has not yet generated commercial sales revenue and has been able to fund its operating losses to date through the sale of its redeemable convertible preferred stock, issuance of convertible notes, net proceeds from its initial public offering (IPO) and subsequent stock offerings, payments from partners during the terms of the collaboration agreements and other financing arrangements. In March 2010, the Company sold 4.95 million shares of its common stock and warrants to purchase 1.9 million shares of common stock in a registered direct offering to a select group of institutional investors for net proceeds of $17.1 million. In October 2010, the Company sold 6.87 million shares of its common stock as part of the Original License and Collaboration Agreement with GSK for proceeds of $31 million. In March 2012, the Company sold 11.5 million shares of its common stock in a stock offering for net proceeds of $62.0 million. In July 2012, the Company sold 2.9 million shares of its common stock as part of the Expanded Collaboration Agreement with GSK for proceeds of $18.6 million. The Company believes that its existing cash and cash equivalents and short-term investments will be sufficient to cover its cash flow requirements into the fourth quarter of 2014.

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Basis of Presentation

The Company has prepared the accompanying unaudited consolidated financial statements in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) for interim financial information and with the instructions to Form 10-Q and Article 10-01 of Regulations S-X. Accordingly, they do not include all of the information and disclosures required by generally accepted accounting principles for complete financial statements. In the opinion of management, the accompanying unaudited financial statements reflect all adjustments, which include only normal recurring adjustments, necessary to present fairly the Company’s interim financial information.

The accompanying unaudited consolidated financial statements and related notes should be read in conjunction with the Company’s financial statements and related notes as contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012. For a complete description of the Company’s accounting policies, please refer to the Annual Report on Form 10-K for the fiscal year ended December 31, 2012.

Revenue Recognition

The Company recognizes revenue when amounts are realized or realizable and earned. Revenue is considered realizable and earned when the following criteria are met: (1) persuasive evidence of an arrangement exists; (2) delivery has occurred or services have been rendered; (3) the price is fixed or determinable; and (4) collection of the amounts due are reasonably assured.

In multiple element arrangements, revenue is allocated to each separate unit of accounting and each deliverable in an arrangement is evaluated to determine whether it represents separate units of accounting. A deliverable constitutes a separate unit of accounting when it has standalone value and there is no general right of return for the delivered elements. In instances when the aforementioned criteria are not met, the deliverable is combined with the undelivered elements and the allocation of the arrangement consideration and revenue recognition is determined for the combined unit as a single unit of accounting. Allocation of the consideration is determined at arrangement inception on the basis of each unit’s relative selling price. In instances where there is determined to be a single unit of accounting, the total consideration is applied as revenue for the single unit of accounting and is recognized over the period of inception through the date where the last deliverable within the single unit of accounting is expected to be delivered.

The Company’s current revenue recognition policies, which were applied in fiscal 2010, provide that, when a collaboration arrangement contains multiple deliverables, such as license and research and development services, the Company allocates revenue to each separate unit of accounting based on a selling price hierarchy. The selling price hierarchy for a deliverable is based on (i) its vendor specific objective evidence (VSOE) if available, (ii) third party evidence (TPE) if VSOE is not available, or (iii) best estimated selling price (BESP) if neither VSOE nor TPE is available. The Company would establish the VSOE of selling price using the price charged for a deliverable when sold separately. The TPE of selling price would be established by evaluating largely similar and interchangeable competitor products or services in standalone sales to similarly situated customers. The BESP would be established considering internal factors such as an internal pricing analysis or an income approach using a discounted cash flow model.

The Company also considers the impact of potential future payments it makes in its role as a vendor to its customers and evaluates if these potential future payments could be a reduction of revenue from that customer. If the potential future payments to the customer are:

· a payment for an identifiable benefit; and

· the identifiable benefit is separable from the existing relationship between the Company and its customer; and

· the identifiable benefit can be obtained from a party other than the customer; and

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· the Company can reasonably estimate the fair value of the identifiable benefit

then the payments are accounted for separate from the revenue received from that customer. If, however, all these criteria are not satisfied, then the payments are treated as a reduction of revenue from that customer.

If the Company determines that any potential future payments to its customers are to be considered as a reduction of revenue, it must evaluate if the total amount of revenue to be received under the arrangement is fixed and determinable. If the total amount of revenue is not fixed and determinable due to the uncertain nature of the potential future payments to the customer, then any customer payments cannot be recognized as revenue until the total arrangement consideration becomes fixed and determinable.

The reimbursements for research and development costs under collaboration agreements that meet the criteria for revenue recognition are included in Research Revenue and the costs associated with these reimbursable amounts are included in research and development expenses.

In order to determine the revenue recognition for contingent milestones, the Company evaluates the contingent milestones using the criteria as provided by the Financial Accounting Standards Boards (FASB) guidance on the milestone method of revenue recognition at the inception of a collaboration agreement. The criteria requires that (i) the Company determines if the milestone is commensurate with either its performance to achieve the milestone or the enhancement of value resulting from the Company’s activities to achieve the milestone, (ii) the milestone be related to past performance, and (iii) the milestone be reasonable relative to all deliverable and payment terms of the collaboration arrangement. If these criteria are met then the contingent milestones can be considered as substantive milestones and will be recognized as revenue in the period that the milestone is achieved.

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 are 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.

New Accounting Standards

In February 2013, the FASB amended its guidance to require an entity to present the effect of certain significant reclassifications out of accumulated other comprehensive income on the respective line items in net income. The new accounting guidance does not change the items that must be reported in other comprehensive income or when an item of other comprehensive income must be reclassified to net income. The guidance is effective prospectively for fiscal years beginning after December 15, 2012. The Company adopted these new provisions for the quarter

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beginning January 1, 2013. As the guidance requires additional presentation only, there was no impact to the Company’s consolidated results of operations or financial position.

Note 2. Cash, Money Market Funds and Marketable Securities

As of June 30, 2013, the Company held $23.5 million in cash and cash equivalents and $50.7 million of available-for-sale investment securities which are reported at fair value on the Company’s balance sheet. Unrealized holding 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.

Consistent with the Company’s investment policy, the Company does not use derivative financial instruments in its investment portfolio. 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.

Cash and available for sale securities consisted of the following as of December 31, 2012 and June 30, 2013 (in thousands):

	As of December 31, 2012
	Cost		Unrealized Gain		Unrealized Loss			Fair Value
Cash balances	$	33,971	$	—	$	—		$	33,971
Corporate debt securities	42,503		5		(11		)	42,497
Commercial paper	19,725		19		—			19,744
Certificate of deposit	2,909		1		—			2,910
	$	99,108	$	25	$	(11	)	$	99,122

Included in cash and cash equivalents	$	33,971	$	—	$	—		$	33,971
Included in marketable securities	65,137		25		(11		)	65,151
Total cash and available for sale securities	$	99,108	$	25	$	(11	)	$	99,122

	As of June 30, 2013
	Cost		Unrealized Gain		Unrealized Loss			Fair Value
Cash balances	$	23,476	$	—	$	—		$	23,476
Corporate debt securities	29,618		1		(15		)	29,604
Commercial paper	20,729		17		—			20,746
Certificate of deposit	350		—		—			350
	$	74,173	$	18	$	(15	)	$	74,176

Included in cash and cash equivalents	$	23,476	$	—	$	—		$	23,476
Included in marketable securities	50,697		18		(15		)	50,700
Total cash and available for sale securities	$	74,173	$	18	$	(15	)	$	74,176

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Unrealized gains and losses are reported as a component of other comprehensive income/(loss) in the statements of comprehensive loss. For the year ended December 31, 2012, unrealized holding gains included in the statement of comprehensive loss was $10 thousand. For the six months ended June 30, 2013, unrealized holding loss included in the statements of comprehensive loss was $11 thousand.

For the year ended December 31, 2012 and the six months ended June 30, 2013, 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, 2012 and June 30, 2013 reflect temporary impairments that have not been recognized and have been in a loss position for less than twelve months. The fair value of these available for sale securities in unrealized loss positions was $33.1 million and $20.8 million as of December 31, 2012 and June 30, 2013, respectively.

The Company holds available-for-sale investment securities which are reported at fair value on the Company’s balance sheet. Unrealized holding gains and losses are reported within accumulated other comprehensive income (“AOCI”) in the statements of comprehensive loss. The changes in AOCI associated with the unrealized holding gain on available-for-sale investments during the three and six months ended June 30, 2012 and 2013, were as follows (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2013			2012		2013

Balance, beginning	$	37		$	15		$	4	$	14
Current period changes in fair value, (a)	(20		)	(12		)	13		(11		)
Reclassification of earnings, (a)	—			—			—		—
Balance, ending	$	17		$	3		$	17	$	3

(a) — Taxes have not been accrued on the unrealized gain on securities as the Company is in a loss position for all periods presented.

Note 3. Basic and Diluted Net Loss Attributable to Common Stockholders 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 has a net loss for all periods presented; accordingly, the inclusion of common stock options and warrants would be anti-dilutive. Therefore, the weighted average shares used to calculate both basic and diluted earnings per share are the same.

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:

	Three Months Ended June 30,						Six Months Ended June 30,
(In thousands, except per share amounts)	2012			2013			2012			2013
Historical
Numerator:
Net loss attributable to common stockholders per common	$	(9,343	)	$	(15,349	)	$	(22,480	)	$	(32,807	)

Denominator
Weighted average common shares outstanding — basic and diluted	46,870,067			49,621,188			42,103,642			49,621,188

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Dilutive common stock equivalents would include the dilutive effect of common stock options and warrants for common stock equivalents. Potentially dilutive common stock equivalents totaled approximately 9.1 million and 11.6 million for the six months ended June 30, 2012 and 2013, respectively. Potentially dilutive common stock equivalents were excluded from the diluted earnings per share denominator for all periods because of their anti-dilutive effect.

Note 4. Stockholders’ Equity

Common Stock and Warrants

As of June 30, 2013, the Company was authorized to issue 125,000,000 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 and is entitled to one vote for each share held.

In July 2012, Amicus and GSK entered into the SPA pursuant to which GSK purchased 2.9 million unregistered shares of Amicus common stock at a price of $6.30 per share. The total purchase price for these shares was $18.6 million. The Company received all proceeds from the sale of such shares on July 26, 2012. As of June 30, 2013, GSK had a 19.8% ownership position in the Company.

In March 2012, the Company sold 11.5 million shares of its common stock at a public offering price of $5.70 through a Registration Statement on Form S-3 that was declared effective by the SEC on May 27, 2009. The aggregate offering proceeds were $65.6 million.

In October 2010, GSK purchased approximately 6.9 million shares of the Company’s common stock at $4.56 per share, in connection with the Original Collaboration Agreement. The total value of this equity investment was approximately $31 million.

In March 2010, the Company sold 4.9 million shares of its common stock and warrants to purchase 1.9 million shares of common stock in a registered direct offering to a selected group of institutional investors through a Registration Statement on Form S-3 that was declared effective by the SEC on May 27, 2009. The shares of common stock and warrants were sold in units consisting of one share of common stock and one warrant to purchase 0.375 shares of common stock at a price of $3.74 per unit. The warrants have a term of four years and are exercisable any time on or after the six month anniversary of the date they were issued, at an exercise price of $4.43 per share. The gross offering proceeds were $18.5 million. There were approximately 1.4 million warrants outstanding at June 30, 2013.

Stock Option Plans

During the three and six months ended June 30, 2013, the Company recorded stock based compensation expense of approximately $1.6 million and $3.2 million, respectively. The stock-based compensation expense had no impact on the Company’s cash flows from operations and financing activities. As of June 30, 2013, the total unrecognized compensation cost related to non-vested stock options granted was $11.4 million and is expected to be recognized over a weighted average period of 2.5 years. The following table summarizes information related to stock compensation expense recognized in the statements of operations (in thousands):

	Three Months				Six Months
	Ended June 30,				Ended June 30,
	2012		2013		2012		2013
Stock compensation expense recognized in:
Research and development expense	$	921	$	885	$	1,793	$	1,810
General and administrative expense	836		698		1,352		1,347
Total stock compensation expense	$	1,757	$	1,583	$	3,145	$	3,157

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The fair value of the options granted is estimated on the date of grant using a Black-Scholes option pricing model with the following weighted-average assumptions:

	Three Months						Six Months
	Ended June 30,						Ended June 30,
	2012			2013			2012			2013
Expected stock price volatility	77.0		%	82.0		%	77.5		%	82.0		%
Risk free interest rate	1.1		%	1.4		%	0.7		%	1.2		%
Expected life of options (years)	6.25			6.25			6.25			6.25
Expected annual dividend per share	$	0.00		$	0.00		$	0.00		$	0.00

A summary of option activities related to the Company’s stock options for the six months ended June 30, 2013 is as follows:

					Weighted
			Weighted		Average
	Number		Average		Remaining	Aggregate
	of		Exercise		Contractual	Intrinsic
	Shares		Price		Life	Value
	(in thousands)					(in thousands)

Balance at December 31, 2012	7,974.2		$	6.35
Options granted	2,458.8		$	3.04
Options exercised	—		$	—
Options forfeited	(280.9	)	$	5.09
Balance at June 30, 2013	10,152.1		$	5.58	7.6 years	$	38.1

Vested and unvested expected to vest, June 30, 2013	9,443.1		$	5.70	7.4 years	$	38.1
Exercisable at June 30, 2013	5,154.7		$	6.92	6.1 years	$	38.1

Note 5. Short-Term Borrowings and Long-Term Debt

In August 2011, the Company entered into a loan and security agreement (the “2011 Loan Agreement”) with Silicon Valley Bank (SVB), in order to finance certain capital expenditures anticipated to be made by the Company in connection with its move in March 2012 to new office and laboratory space in Cranbury, New Jersey. The 2011 Loan Agreement provides for up to $3 million of equipment financing through January 2014. Borrowings under the 2011 Loan Agreement are collateralized by equipment purchased with the proceeds of the loan and bear interest at a variable rate of SVB prime + 2.5%. The current SVB prime rate is 4.0%. In February 2012, the Company borrowed approximately $1.0 million from the 2011 Loan Agreement which will be repaid over the following 2.5 years. The 2011 Loan Agreement contains customary terms and conditions, including a financial covenant whereby the Company must maintain a minimum amount of liquidity measured at the end of each month where unrestricted cash, cash equivalents, and marketable securities, are greater than $20 million plus outstanding debt due to SVB. The Company has at all times been in compliance with these covenants during the term of the agreement.

At June 30, 2013, the total amount due under the 2011 Loan Agreement was $0.5 million. The carrying amount of the Company’s borrowings approximates fair value at June 30, 2013.

Note 6. 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:

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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.

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 three months ended June 30, 2013. No transfers of assets between Level 1 and Level 2 of the fair value measurement hierarchy occurred during the six months ended June 30, 2013.

Secured Debt

As disclosed in Note 5, the Company has a loan and security agreement with Silicon Valley Bank. The carrying amount of the Company’s borrowings approximates fair value at June 30, 2013. The Company’s secured debt is classified as Level 2 and the fair value is estimated using quoted prices for similar liabilities in active markets, as well as inputs that are observable for the liability (other than quoted prices), such as interest rates that are observable at commonly quoted intervals.

Warrants

The Company allocated $3.3 million of proceeds from its March 2010 registered direct offering to warrants issued in connection with the offering that was classified as a liability. The valuation of the warrants is determined using the Black-Scholes model. This model uses inputs such as the underlying price of the shares issued when the warrant is exercised, volatility, risk free interest rate and expected life of the instrument. The Company has determined that the warrant liability should be classified within Level 3 of the fair value hierarchy by evaluating each input for the Black-Scholes model against the fair value hierarchy criteria and using the lowest level of input as the basis for the fair value classification. There are six inputs: closing price of Amicus stock on the day of evaluation; the exercise price of the warrants; the remaining term of the warrants; the volatility of Amicus’ stock over that term; annual rate of dividends; and the riskless rate of return. Of those inputs, the exercise price of the warrants and the remaining term are readily observable in the warrant agreements. The annual rate of dividends is based on the Company’s historical practice of not granting dividends. The closing price of Amicus stock would fall under Level 1 of the fair value hierarchy as it is a quoted price in an active market. The riskless rate of return is a Level 2 input, while the historical volatility is a Level 3 input in accordance with the fair value accounting guidance. Since the lowest level input is a Level 3, the Company determined the warrant liability is most appropriately classified within Level 3 of the fair value hierarchy. This liability is subject to fair value mark-to-market adjustment each period and approximately 0.5 million warrants were exercised in 2012. The Company recognized the change in the fair value of the warrant liability as non-operating income of $0.6 million for the three months ended June 30, 2013 and the resulting fair value of the warrant liability at June 30, 2013 was $0.6 million. The weighted average assumptions used in the Black-Scholes valuation model for the warrants are as follows:

	Six Months Ended June 30,
	2012			2013
Expected stock price volatility	73.27		%	111.44		%
Risk free interest rate	0.29		%	0.11		%
Expected life of warrants (years)	1.67			0.67
Expected annual dividend per share	$	0.00		$	0.00

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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, 2012, are identified in the following table (in thousands):

	Balance as of December 31, 2012
	Level 1		Level 2		Total
*Assets:*
Cash/Money market funds	$	33,971	$	—	$	33,971
Corporate debt securities	—		42,497		42,497
Commercial paper	—		19,744		19,744
Certificate of deposit	—		2,910		2,910
	$	33,971	$	65,151	$	99,122

	Level 1		Level 2		Level 3		Total
*Liabilities:*
Secured debt	$	—	$	697	$	—	$	697
Warrants liability	—		—		908		908
	$	—	$	697	$	908	$	1,605

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 June 30, 2013, are identified in the following table (in thousands):

	Balance as of June 30, 2013
	Level 1		Level 2		Total
*Assets:*
Cash/Money market funds	$	23,476	$	—	$	23,476
Corporate debt securities	—		29,604		29,604
Commercial paper	—		20,746		20,746
Certificate of deposit	—		350		350
	$	23,476	$	50,700	$	74,176

	Level 1		Level 2		Level 3		Total
*Liabilities:*
Secured debt	$	—	$	498	$	—	$	498
Warrants liability	—		—		551		551
	$	—	$	498	$	551	$	1,049

The change in the fair value of the Level 3 liability was a decrease of $0.6 million and an increase of $0.1 million for the three months ended June 30, 2013, and 2012, respectively. The change in fair value for the Level 3 liability was a decrease of $0.4 million and an increase of $2.5 million for the six months ended June 30, 2013 and 2012, respectively.

Note 7. Collaborative Agreements

GSK

On October 28, 2010, the Company entered into the Original Collaboration Agreement with Glaxo Group Limited, an affiliate of GSK, to develop and commercialize migalastat HCl. Under the terms of the Original Collaboration Agreement, GSK received an exclusive worldwide license to develop, manufacture and commercialize migalastat HCl. In consideration of the license grant, the Company received an upfront, license payment of $30 million from GSK and was eligible to receive further payments of approximately $173.5 million upon the successful achievement of development, regulatory and commercialization milestones, as well as tiered

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double-digit royalties on global sales of migalastat HCl. Potential payments included up to (i) $13.5 million related to the attainment of certain clinical development objectives and the acceptance of regulatory filings in select worldwide markets, (ii) $80 million related to market approvals for migalastat HCl in selected territories throughout the world, and (iii) $80 million associated with the achievement of certain sales thresholds. GSK and the Company were jointly funding development costs in accordance with an agreed upon development plan. Additionally, GSK purchased approximately 6.9 million shares of the Company’s common stock at $4.56 per share, a 30% premium on the average price per share of the Company’s stock over a 60 day period preceding the closing date of the transaction. The total value of this equity investment to the Company was approximately $31 million.

On July 17, 2012, the Company entered into the Expanded Collaboration Agreement with GSK pursuant to which the Company and GSK continue to develop and commercialize migalastat HCl, currently in Phase 3 development for the treatment of Fabry disease. The Expanded Collaboration Agreement amends and replaces in its entirety the Original Collaboration Agreement. Under the terms of the Expanded Collaboration Agreement, the Company and GSK will co-develop all formulations of migalastat HCl for Fabry disease, including the development of migalastat HCl co-formulated with an investigational ERT for Fabry disease in collaboration with another GSK collaborator JCR Pharmaceutical Co. Ltd. The Company will commercialize all migalastat HCl products for Fabry disease in the United States while GSK will commercialize all such products in the rest of the world.

The exclusive license granted to GSK under the Original Collaboration Agreement to commercialize migalastat HCl worldwide was replaced under the Expanded Collaboration Agreement, which grants two exclusive licenses: (i) an exclusive license from GSK to the Company to commercialize migalastat HCl in the United States, and (ii) an exclusive license from the Company to GSK to commercialize migalastat HCl in the rest of world. Amicus and GSK each have a license to manufacture migalastat HCl for commercialization of monotherapy and chaperone-ERT co-administration migalastat HCl products while GSK maintains an exclusive license to manufacture such products for development purposes (subject to limited exceptions) and to manufacture the Co-formulated Product. In the event of a change of control in the Company during the term of the Expanded Collaboration Agreement, GSK has the option to purchase an exclusive license to develop, manufacture and commercialize migalastat HCl in the United States.

GSK is eligible to receive U.S. regulatory approval milestones totaling $20 million for migalastat HCl monotherapy and migalastat HCl-ERT co-administration, and additional regulatory approval and product launch milestone payments totaling up to $35 million within seven years following the launch of the Co-formulated Product. The Company will also be responsible for certain pass-through milestone payments and single-digit royalties on the net U.S. sales of the Co-formulated Product that GSK must pay to a third party. In addition, the Company is no longer eligible to receive any milestones or royalties it would have been eligible to receive under the Original Collaboration Agreement other than a $3.5 million clinical development milestone achieved in the second quarter of 2012 and paid by GSK to Amicus in the third quarter of 2012.

The Company and GSK will continue to jointly fund development costs for all formulations of migalastat HCl in accordance with agreed upon development plans pursuant to which the Company and GSK funded 25% and 75% of such costs, respectively, for the monotherapy and co-administration programs during 2012 and 40% and 60%, respectively, in 2013 and beyond. Effective upon entry into the Expanded Collaboration Agreement, costs for the development of the Co-formulated Product are also funded 40% and 60% between Amicus and GSK, respectively.

Additionally, simultaneous with entry into the Expanded Collaboration Agreement, Amicus and GSK entered into an SPA pursuant to which GSK purchased approximately 2.9 million shares of Amicus common stock at a price of $6.30 per share. The SPA provides GSK with customary registration rights for the shares purchased and includes a six-month lock-up provision. The total purchase price was $18.6 million and the Company received all proceeds from the sale of such shares on July 26, 2012. As of June 30, 2013, GSK had a 19.8% ownership position in the Company as a result of the Original and Expanded Collaboration Agreements.

Under the Original Collaboration Agreement, the upfront license fee, together with the premium received on the stock purchase, was being recognized as Collaboration Revenue over the original development period. In addition, the Company was receiving reimbursements of research expenditures under the cost sharing arrangement which was being accounted for as research revenue on the statement of operations. Under the Expanded Collaboration Agreement, the Company will continue to receive research expense reimbursements for the development of

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migalastat HCl but may be required to pay contingent milestones to GSK in the future related to the US commercial rights to migalastat HCl.

In accordance with the revenue recognition guidance related to multiple-element arrangements, the Company identified all of the deliverables at the inception of the Expanded Collaboration Agreement. The significant deliverables were determined to be the rest of world licensing rights to migalastat HCl, the research services to continue and complete the development of migalastat HCl and the delivery of the Company’s common stock. The Company determined that the rest of world licensing rights and the research services represent one unit of accounting as none of these deliverables on its own has standalone value separate from the other. The Company also determined that the delivery of the Company’s common stock does have standalone value separate from the rest of world licensing rights and the research services. As a result, the Company’s common stock was considered a separate unit of accounting and was accounted for as an issuance of common stock. However, as the Company’s common stock was sold at a premium to the market closing price, the premium amount paid over the market closing price was determined to be additional consideration paid to the Company for the collaboration agreement and was included as consideration for the single unit of accounting (rest of world licensing rights and research services) identified above.

In evaluating the impact of the Expanded Collaboration Agreement, the Company applied the accounting guidance regarding the impact of potential future payments it may make in its role as a vendor (Amicus) to its customer (GSK) and evaluated if these potential future payments could be a reduction of revenue from GSK. If the potential future payments to GSK are:

· a payment for an identifiable benefit, and

· the identifiable benefit is separable from the existing relationship between the Company and GSK, and

· the identifiable benefit can be obtained from a party other than GSK, and

· 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 does not believe that, for accounting purposes, the new US licensing rights to migalastat HCl obtained from GSK represent a separate, identifiable benefit from the licenses in the Original Collaboration Agreement. The contingent amounts payable to GSK are 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 US licensing rights to migalastat HCl.

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 recognizes any of the upfront license fee and premium 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.

The recognition of Research Revenue is also affected by the determination that the overall total arrangement consideration is no longer fixed and determinable, despite the fact that the research activities will continue and that the research expense reimbursements by GSK to Amicus will be received as the research activities related to the reimbursement would have already been completed. Therefore any research reimbursements from GSK are recorded as deferred reimbursements on the balance sheet and not recognized until the total arrangement consideration becomes fixed and determinable.

As a result, all revenue recognition was suspended until the total arrangement consideration becomes fixed and determinable. In addition, future milestone payments made by the Company will be applied against the balance of

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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.

Under the Original Collaboration Agreement, the Company evaluated the contingent milestones and determined that they were substantive milestones and would be recognized as revenue in the period that the milestone is achieved. The Company determined that the research based milestones were commensurate with the enhanced value of each delivered item as a result of the Company’s specific performance to achieve the milestones. The research based milestones would have related to past performances when achieved and were reasonable relative to the other payment terms within the Original Collaboration Agreement. In June 2012, the Company achieved a clinical development milestone and recognized $3.5 million of milestone revenue. Under the terms of the Expanded Collaboration Agreement, the Company is no longer entitled to receive any milestone payments from GSK.

Note 8. Subsequent Events

The Company evaluated events that occurred subsequent to June 30, 2013 through the date of issuance of these financial statements. The following event was noted:

On July 11, 2013, GSK notified the Company that a milestone event had been achieved under the Expanded Collaboration Agreement triggering a milestone payment to GSK. As discussed in Note 7 above, the Company is responsible for certain pass-through milestone payments that GSK must pay to a third party in connection with the development of the Co-formulated Product. As a result, the Company will pay approximately $0.8 million to GSK in August 2013 which will subsequently be paid to the third party. This payment will be reflected as a reduction of the deferred reimbursements in the consolidated balance sheet.

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Overview

Amicus Therapeutics, Inc. (Amicus) is a biopharmaceutical company at the forefront of therapies for rare and orphan diseases. We are developing novel, first-in-class treatments for a broad range of human genetic diseases, with a focus on delivering benefits to individuals with lysosomal storage diseases. Our development programs include novel small molecules as monotherapy treatments and in combination with the current standard treatment for Fabry and other lysosomal storage diseases, enzyme replacement therapy (ERT). Our Chaperone-Advanced Replacement Therapy, or CHART™, pharmacological programs include chaperones co-administered with currently marketed ERTs, as well as proprietary therapeutic enzymes co-formulated with our pharmacological chaperones as next-generation ERTs. We believe that our pharmacological chaperone and CHART™ platform technologies, our advanced product pipeline, a strong balance sheet and our strategic collaboration with GSK uniquely position us at the forefront of developing therapies for rare and orphan diseases.

We are developing our lead product candidate, migalastat HCl for Fabry disease, in collaboration with GSK as a monotherapy and in combination with ERT. Current development within our Fabry program includes two monotherapy Phase 3 global registration studies for patients with genetic mutations identified as amenable to this pharmacological chaperone in a cell-based assay (Study 011 and Study 012), a recently completed Phase 2 study investigating migalastat HCl co-administered with currently marketed ERTs (Study 013), and the preclinical development of migalastat HCl co-formulated with a proprietary investigational ERT.

Our current CHART™ programs for Pompe disease are investigating the pharmacological chaperone AT2220 (duvoglustat HCl) in combination with human recombinant GAA (rhGAA) enzymes. AT2220 co-administered with currently marketed rhGAA (Myozyme®/Lumizyme®) is in Phase 2 and AT2220 co-formulated with a proprietary rhGAA enzyme is in preclinical studies. In addition, we are engaged in preclinical development of a proprietary human recombinant IDUA (rhIDUA) enzyme co-formulated with a novel pharmacological chaperone as next generation therapy for Mucopolysaccharidosis Type I (MPS I).

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Program Status

Migalastat HCl for Fabry Disease as a Monotherapy: Phase 3 Global Registration Program

In Study 011, we are comparing migalastat HCl to placebo to potentially support the submission of a New Drug Application, or NDA, to the U.S. Food and Drug Administration (FDA) for marketing approval in the United States as well as to other regulatory agencies. Study 011 randomized 67 patients (24 males and 43 females) diagnosed with Fabry disease who had genetic mutations considered amenable to chaperone monotherapy in a cell-based assay. For the 6-month, double-blind period (Stage 1) patients were randomized to migalastat HCl 150 mg or placebo on an every-other-day (QOD) oral dosing schedule. During the 6-12 month period of Study 011 (Stage 2) patients continued treatment with migalastat HCl or switched from placebo to migalastat HCl.

The primary analysis compared the number of responders in the migalastat HCl versus placebo groups in Stage 1, based on a 50% or greater reduction in interstitial capillary globotriaosylceramide (GL-3) as measured in kidney biopsies. Pathologists blinded to biopsy sequence are using the published, quantitative Barisoni Lipid Inclusion Scoring System with virtual microscopy (BLISS-VM) for the histological evaluation of interstitial capillary GL-3 in kidney biopsies from baseline to month 6 Stage 1 and from baseline to month 12 Stage 2. Secondary endpoints for Study 011 include safety and tolerability, urine GL-3 and kidney function.

In December 2012, Amicus and GSK announced top-line six-month Stage 1 results from Study 011. In the primary responder analysis, 13/32 (41%) in the migalastat HCl group versus 9/32 (28%) in the placebo group demonstrated a 50% or greater reduction in kidney interstitial capillary GL-3 from baseline to month 6 which was not statistically significant (p=0.3). Taken alone a pre-specified secondary analysis of the absolute percent change in kidney interstitial capillary GL-3 from baseline to month 6 showed a median reduction of 41% in the migalastat HCl group versus a median reduction of 6% in the placebo group (p=0.093). Data from Stage 2 are anticipated in the fourth quarter of 2013.

A meeting with the FDA was held in the second quarter of 2013 to review the statistical analysis plan for Study 011 and to discuss the Stage 1 results. At this meeting, the FDA stated that the Stage 1 data alone would not be sufficient to support accelerated approval in the U.S. The FDA agreed to a follow-up meeting to review the full data from all Phase 2 and Phase 3 clinical studies of migalastat HCL. We expect to hold this meeting to discuss a U.S. marketing application for migalastat HCL in the second half of 2014.

Study 012 is a randomized, open-label 18-month study investigating the safety and efficacy of migalastat HCl (150 mg, every-other-day) to current standard of care ERTs (Fabrazyme® and Replagal®) to support global registration. In December 2012, this study achieved full enrollment of 60 patients, who were randomized 1.5:1 to switch from ERT to migalastat HCl or remain on ERT. The study recruited males and females with Fabry disease and genetic mutations shown to be amenable to migalastat HCl monotherapy in a cell-based assay. All subjects had been receiving ERT infusions for a minimum of 12 months (at least 3 months at the labeled dose). Data is anticipated in the second half of 2014 on the primary outcome measure, which is renal function assessed by iohexol Glomerular Filtration Rate (GFR) at 18 months.

Migalastat HCl Combination Programs for Fabry Disease

Study 013 is an open-label Phase 2 drug-drug interaction study that evaluated the effects of a single oral dose of migalastat HCl (150 mg or 450 mg) co-administered prior to the currently marketed ERTs for Fabry disease (Fabrazyme® or Replagal®) in males with Fabry disease. Results from this study presented in February 2013 demonstrated an increase in α-Gal A enzyme levels, the enzyme deficient in Fabry patients, in plasma and in tissue following co-administration of migalastat HCl with ERT versus ERT alone. Based on the results from this study, the next chaperone-ERT combination study for Fabry disease is being designed to investigate intravenous treatment of migalastat HCl co-formulated with JCR’s proprietary recombinant human α-Gal A enzyme (JR-051).

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AT2220 CHART ™ Programs for Pompe Disease

We also continue to advance our pharmacological chaperone AT2220 (duvoglustat HCl) co-administered with the only approved ERTs (Myozyme®/Lumizyme®) for Pompe disease. We recently completed a Phase 2 safety and PK study (Study 010) that investigated single ascending oral doses of AT2220 (50 mg, 100 mg, 250 mg, and 600 mg) co-administered with Myozyme® or Lumizyme® (alglucosidase alfa. or recombinant human GAA enzyme, rhGAA), in patients with Pompe disease. Each patient received one infusion of ERT alone, and then a single dose of AT2220 just prior to the next ERT infusion. Results from this study showed an increase in GAA enzyme activity in plasma and muscle compared to ERT alone. Based on these results, we expect to initiate a repeat-dose clinical study of a novel intravenous formulation of AT2220 (AT2220-IV) co-administered with Myozyme®/Lumizyme® in the second half of 2013.

In addition, we have initiated development of a co-formulated product which combines AT2220 (duvoglustat HCl) with our own proprietary recombinant human (rh) GAA enzyme as a next-generation ERT for Pompe disease. We believe this approach has the potential to improve the properties of the rhGAA enzyme itself while incorporating AT2220 as a small molecule stabilizer to increase exposure and tissue uptake of active enzyme, and reduce immunogenicity relative to currently marketed ERTs.

Collaboration with GSK

On July 17, 2012, we entered into the Expanded Collaboration Agreement with an affiliate of GlaxoSmithKline PLC (GSK) pursuant to which we and GSK continue to develop and commercialize migalastat HCl, currently in Phase 3 development for the treatment of Fabry disease. For further information, please see “—Note 7. Collaborative Agreements.”

Other Potential Alliances and Collaborations

We continually evaluate other potential collaborations and business development opportunities that would bolster our ability to develop and commercialize therapies for rare and orphan diseases including licensing agreements and acquisitions of businesses and assets. We believe such opportunities may be important to the advancement of our current product candidate pipeline, the expansion of the development of our current technology, gaining access to new technologies and in our transformation from a development stage company to a commercial biotechnology company.

Financial Operations Overview

We have generated significant losses to date and expect to continue to generate losses as we continue the clinical and preclinical development of our drug candidates. These activities are budgeted to expand over time and will require further resources if we are to be successful. From our inception in February 2002 through June 30, 2013, we have accumulated a deficit of $351.7 million. As we have not yet generated commercial sales revenue from any of our product candidates, our losses will continue and are likely to be substantial in the near term.

Revenue

The reimbursements for research and development costs under the Original License and Collaboration Agreement that met the criteria for revenue recognition were recognized as Research Revenue. For the three months

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and six months ended June 30, 2012, we recognized $5.5 million and $11.6 million, respectively, as Research Revenue for reimbursed research and development costs.

On July 17, 2012, we entered into the Expanded Collaboration Agreement with GSK. Due to a change in the accounting for revenue recognition for the Expanded Collaboration Agreement, all revenue recognition will be suspended until the total arrangement consideration becomes fixed and determinable. Starting on July 17, 2012, any payments received from GSK are recorded as deferred reimbursements on the balance sheet. In addition, future milestone payments we may pay GSK will be applied against the balance of this deferred reimbursements account. Revenue recognition would resume once the total arrangement consideration becomes fixed and determinable which would occur when the balance of the deferred reimbursements account is sufficient to cover all the remaining contingent milestone payments due to GSK. As a result, we no longer recognize any revenue related to Collaboration and Milestone Revenue or Research Revenue as of the date of the Expanded Collaboration Agreement. There is no cash effect of this change in accounting, and there is no scenario where Amicus would have to refund any of the upfront payment, milestone payments, or research reimbursement payments.

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. However, we will share future research and development costs related to migalastat HCl with GSK in accordance with the Expanded Collaboration Agreement. Research and development expense consists of:

· internal costs associated with our research and clinical development activities;

· payments we make to third party contract research organizations, contract manufacturers, investigative sites, and consultants;

· technology license costs;

· manufacturing development costs;

· personnel related expenses, including salaries, benefits, travel, and related costs for the personnel involved in drug discovery and development;

· activities relating to regulatory filings and the advancement of our product candidates through preclinical studies and clinical trials; and

· 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. From our inception in February 2002 through June 30, 2013, we have incurred research and development expense in the aggregate of $338.6 million.

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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).

									Period from
									February 4, 2002
	Three Months Ended				Six Months Ended				(inception) to
	June 30,				June 30,				June 30,
Projects	2012		2013		2012		2013		2013
Third party direct project expenses
Monotherapy Studies
Migalastat HCl (Fabry Disease — Phase 3)	$	4,560	$	2,010	$	10,269	$	4,352	$	84,405
Afegostat tartrate (Gaucher Disease — Phase 2*)	15		44		42		74		26,375
AT2220 (Pompe Disease — Phase 2)	3		—		—		—		13,252
Combination Studies
Migalastat HCl Co-Administration (Fabry Disease — Phase 2)	619		17		961		462		3,892
Migalastat HCl Co-Formulation (Fabry Disease — Preclinical)	56		—		301		76		530
Afegostat tartrate Co-Administration (Gaucher Disease — Preclinical)	—		—		—		21		55
AT2220 Co-Administration (Pompe Disease — Phase 2)	645		723		926		1,820		5,948
AT2220 Co-Formulation (Pompe Disease — Preclinical)	—		115		—		224		224
Neurodegenerative Diseases (Preclinical)	124		29		341		43		9,069

Total third party direct project expenses	6,022		2,938		12,840		7,072		143,750

Other project costs (1)
Personnel costs	5,203		5,589		10,645		11,477		125,814
Other costs (2)	2,498		2,198		4,242		4,165		69,043
Total other project costs	7,701		7,787		14,887		15,642		194,857

Total research and development costs	$	13,723	$	10,725	$	27,727	$	22,714	$	338,607

(1) Other project costs are leveraged across multiple projects.

(2) Other costs include facility, supply, overhead, and licensing costs that support multiple clinical and preclinical projects.

* We do not plan to advance afegostat tartrate monotherapy program into Phase 3 development at this time.

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 HCl 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:

· the number of clinical sites included in the trials;

· the length of time required to enroll suitable patients;

· the number of patients that ultimately participate in the trials;

· the results of our clinical trials; and

· any mandate by the FDA or other regulatory authority to conduct clinical trials beyond those currently anticipated.

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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. In addition, GSK has considerable influence over and decision-making authority related to our migalastat HCl program. 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 could be required to expend significant additional financial resources and time on the completion of clinical development. Drug development may take several years and millions of dollars in development costs.

General and Administrative Expense

General and administrative expense consists primarily of salaries and other related costs, including stock-based compensation expense, for persons serving in our executive, finance, accounting, legal, information technology and human resource functions. Other general and administrative expense includes facility-related costs not otherwise included in research and development expense, promotional expenses, costs associated with industry and trade shows, and professional fees for legal services, including patent-related expense and accounting services. From our inception in February 2002 through June 30, 2013, we spent $142.3 million on general and administrative expense.

Interest Income and Interest Expense

Interest income consists of interest earned on our cash and cash equivalents and marketable securities. Interest expense consists of interest incurred on our equipment financing agreement.

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. 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.

While there were no significant changes during the quarter ended June 30, 2013 to the items that we disclosed as our significant accounting policies and estimates described in Note 2 to the Company’s financial statements as contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012, we believe that the following accounting policies are the most critical to aid you in fully understanding and evaluating our financial condition and results of operations.

Revenue Recognition

We recognize revenue when amounts are realized or realizable and earned. Revenue is considered realizable and earned when the following criteria are met: (1) persuasive evidence of an arrangement exists; (2) delivery has occurred or services have been rendered; (3) the price is fixed or determinable; and (4) collection of the amounts due are reasonably assured.

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undelivered elements and the allocation of the arrangement consideration and revenue recognition is determined for the combined unit as a single unit of accounting. Allocation of the consideration is determined at arrangement inception on the basis of each unit’s relative selling price. In instances where there is determined to be a single unit of accounting, the total consideration is applied as revenue for the single unit of accounting and is recognized over the period of inception through the date where the last deliverable within the single unit of accounting is expected to be delivered.

Our current revenue recognition policies, which were applied in fiscal 2010, provide that, when a collaboration arrangement contains multiple deliverables, such as license and research and development services, we allocate revenue to each separate unit of accounting based on a selling price hierarchy. The selling price hierarchy for a deliverable is based on: (i) its vendor specific objective evidence (VSOE) if available, (ii) third party evidence (TPE) if VSOE is not available, or (iii) best estimated selling price (BESP) if neither VSOE nor TPE is available. We would establish the VSOE of selling price using the price charged for a deliverable when sold separately. The TPE of selling price would be established by evaluating largely similar and interchangeable competitor products or services in standalone sales to similarly situated customers. The BESP would be established considering internal factors such as an internal pricing analysis or an income approach using a discounted cash flow model.

We also consider the impact of potential future payments we make in our role as a vendor to our customers and evaluate if these potential future payments could be a reduction of revenue from that customer. If the potential future payments to the customer are:

· a payment for an identifiable benefit, and

· the identifiable benefit is separable from the existing relationship between us and our customer, and

· the identifiable benefit can be obtained from a party other than the customer, and

· the fair value of the identifiable benefit can be reasonably estimated,

then the payments are accounted for separately from the revenue received from that customer. If, however, all these criteria are not satisfied, then the payments are treated as a reduction of revenue from that customer.

If we determine that any potential future payments to our customers are to be considered as a reduction of revenue, we must evaluate if the total amount of revenue to be received under the arrangement is fixed and determinable. If the total amount of revenue is not fixed and determinable due to the uncertain nature of the potential future payments to the customer, then any customer payments cannot be recognized as revenue until the total arrangement consideration becomes fixed and determinable.

In order to determine the revenue recognition for contingent milestones, we evaluate the contingent milestones using the criteria as provided by the Financial Accounting Standards Board (FASB) guidance on the milestone method of revenue recognition at the inception of a collaboration agreement. The criteria requires that: (i) we determine if the milestone is commensurate with either our performance to achieve the milestone or the enhancement of value resulting from our activities to achieve the milestone, (ii) the milestone be related to past performance, and (iii) the milestone be reasonable relative to all deliverable and payment terms of the collaboration arrangement. If these criteria are met then the contingent milestones can be considered as substantive milestones and will be recognized as revenue in the period that the milestone is achieved.

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:

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· fees owed to contract research organizations in connection with preclinical and toxicology studies and clinical trials;

· fees owed to investigative sites in connection with clinical trials;

· fees owed to contract manufacturers in connection with the production of clinical trial materials;

· fees owed for professional services, and

· unpaid salaries, wages and benefits.

Stock-Based Compensation

In accordance with the applicable guidance, we measure stock-based compensation at a fair value, which is determine by measuring the cost of employee services received in exchange for an award of equity instruments based upon the grant-date fair value of the award. 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.

We use the Black-Scholes option pricing model when estimating the 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 calculated based on a blended weighted average of historical information of our stock and the weighted average of historical information of similar public entities for which historical information was available. We will continue to use a blended weighted average approach using our own historical volatility and other similar public entity volatility information until our historical volatility is relevant to measure expected volatility for future option grants. The average expected life was determined using a “simplified” method of estimating the expected exercise term which is the mid-point between the vesting date and the end of the contractual term. As our stock price volatility has been over 75% and we have experienced significant business transactions (Shire and GSK collaborations), we believe that we do not have sufficient reliable exercise data in order to justify a change from the use of the “simplified” method of estimating the expected exercise term of employee stock option grants. 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 expected turnover as well as a historical analysis of actual option forfeitures.

The following table summarizes information related to stock compensation expense recognized in the statements of operations (in thousands):

	Three Months				Six Months
	Ended June 30,				Ended June 30,
	2012		2013		2012		2013
Stock compensation expense recognized in:
Research and development expense	$	921	$	885	$	1,793	$	1,810
General and administrative expense	836		698		1,352		1,347
Total stock compensation expense	$	1,757	$	1,583	$	3,145	$	3,157

The weighted average assumptions used in the Black-Scholes option pricing model are as follows:

	Three Months						Six Months
	Ended June 30,						Ended June 30,
	2012			2013			2012			2013
Expected stock price volatility	77.0		%	82.0		%	77.5		%	82.0		%
Risk free interest rate	1.1		%	1.4		%	0.7		%	1.2		%
Expected life of options (years)	6.25			6.25			6.25			6.25
Expected annual dividend per share	$	0.00		$	0.00		$	0.00		$	0.00

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Warrants

The warrants issued in connection with the March 2010 registered direct offering are classified as a liability. The fair value of the warrants liability is evaluated at each balance sheet date using the Black-Scholes valuation model. This model uses inputs such as the underlying price of the shares issued when the warrant is exercised, volatility, risk free interest rate and expected life of the instrument. Any changes in the fair value of the warrants liability is recognized in the consolidated statement of operations. The weighted average assumptions used in the Black-Scholes valuation model for the warrants June 30, 2012 and June 30, 2013 are as follows:

	June 30, 2012			June 30, 2013
Expected stock price volatility	73.27		%	111.44		%
Risk free interest rate	0.29		%	0.11		%
Expected life of warrants (years)	1.67			0.67
Expected annual dividend per share	$	0.00		$	0.00

Basic and Diluted Net Loss Attributable to Common Stockholders per Common Share

We calculated 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. We had a net loss for all periods presented; accordingly, the inclusion of common stock options and warrants would be anti-dilutive. Therefore, the weighted average shares used to calculate both basic and diluted earnings per share are the same.

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 and pro forma net loss attributable to common stockholders per common share:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
(In thousands, except per share amount)	2012			2013			2012			2013
Historical
Numerator:
Net loss attributable to common stockholders	$	(9,343	)	$	(15,349	)	$	(22,480	)	$	(32,807	)

Denominator:
Weighted average common shares outstanding — basic and diluted	46,870,067			49,621,188			42,103,642			49,621,188

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Results of Operations

Three Months Ended June 30, 2013 Compared to Three Months Ended June 30, 2012

Revenue. For the three months ended June 30, 2012, we recognized $5.2 million as Collaboration and Milestone Revenue. The reimbursements for research and development costs under the Original License and Collaboration Agreement that met the criteria for revenue recognition were recognized as Research Revenue. For the three months ended June 30, 2012, we recognized $5.5 million as Research Revenue.

Under the Original License and Collaboration Agreement, GSK paid us an initial, non-refundable license fee of $30 million and a premium of $3.2 million related to GSK’s purchase of an equity investment in Amicus which was being recognized as Collaboration and Milestone Revenue on a straight-line basis over the development period until entry into the Expanded Collaboration Agreement. Due to a change in the accounting for revenue recognition for the Expanded Collaboration Agreement, all revenue recognition related to the collaboration will be suspended until the total arrangement consideration becomes fixed and determinable. Any payments received from GSK will be recorded as deferred reimbursements on the balance sheet. In addition, future milestone payments we may pay GSK will be applied against the balance of this deferred reimbursements account. Revenue recognition would resume once the total arrangement consideration becomes fixed and determinable which would occur when the balance of the deferred reimbursements account is sufficient to cover all the remaining contingent milestone payments. As a result, we no longer recognize any revenue related to Collaboration and Milestone Revenue or Research Revenue as of the date of the Expanded Collaboration Agreement. There is no cash effect of this change in accounting, and there is no scenario where Amicus would have to refund any of the upfront payment, milestone payments, or research reimbursement payments. We have not generated any commercial sales revenue since our inception. We have received cash payments from GSK related to the research reimbursement of $4.3 million and $1.3 million for the three months ended June 30, 2012, and 2013, respectively.

Research and Development Expense. Research and development expense was $10.7 million for the three months ended June 30, 2013, representing a decrease of $3.0 million or 21.9% from $13.7 million for the three months ended June 30, 2012. The variance was primarily attributable to a decrease in contract research and manufacturing costs due to the decreased activity within the Fabry program. The decreases were partially offset by higher personnel costs.

General and Administrative Expense. General and administrative expense was $4.8 million for the three months ended June 30, 2013, representing a decrease of $1.0 million or 17.2% from $5.8 million for the three months ended June 30, 2012. The decrease was primarily due to decrease in personnel costs and legal fees.

Interest Income and Interest Expense. Interest income was $0.04 million for the three months ended June 30, 2013, representing a decrease of $ 0.06 million or 60% from $0.1 million for the three months ended June 30, 2012. The decrease was due to lower cash and investment balances . Interest expense was approximately $9 thousand for the three months ended June 30, 2013 compared to $15 thousand for the three months ended June 30, 2012. The decrease was due to less outstanding debt during the period on the secured loan.

Change in Fair Value of Warrant Liability. In connection with the sale of our common stock and warrants from the registered direct offering in March 2010, we recorded the warrants as a liability at their fair value using a Black-Scholes model and remeasure the fair value at each reporting date until exercised or expired. Changes in the fair value of the warrants are reported in the statements of operations as non-operating income or expense. For the three months ended June 30, 2013, we reported income of $0.6 million related to the decrease in fair value of these warrants as compared to expense of $0.1 million for the three months ended June 30, 2012, representing an increase of $0.7 million. The market price of our common stock has been and may continue to be volatile. Consequently, future fluctuations in the price of our common stock may cause significant increases or decreases in the fair value of the warrant liability

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Results of Operations

Six Months Ended June 30, 2013 Compared to Six Months Ended June 30, 2012

Revenue. For the six months ended June 30, 2012, we recognized $3.5 million as milestone revenue upon achieving clinical development milestone and $3.3 million of the total upfront consideration received from GSK upon entry into the License and Collaboration Agreement as Collaboration Revenue. For the six months ended June 30, 2012, we recognized $11.6 million as Research Revenue. As a result of the Expanded Collaboration Agreement with GSK effective July 2012, we no longer recognize any revenue related to the Collaboration and Milestone Revenue or Research Revenue for 2013.

Research and Development Expense. Research and development expense was $22.7 million for the six months ended June 30, 2013, representing a decrease of $5.0 million or 18.1% from $27.7 million for the six months ended June 30, 2012. The variance was primarily attributable to a decrease in contract research and manufacturing costs due to decreased activity within the Fabry program.

General and Administrative Expense. General and administrative expense was $9.7 million for the six months ended June 30, 2013, representing a decrease of $0.2 million or 2% from $9.9 million for the six months ended June 30, 2012. The decrease was primarily due to decreases in personnel costs, legal fees and facilities.

Interest Income and Interest Expense. Interest income was $0.1 million for the six months ended June 30, 2013, and 2012. Interest expense was approximately $0.02 million for the six months ended June 30, 2013 compared to $0.06 million for the three months ended June 30, 2012. The decrease was due to less outstanding debt during the period on the secured loan.

Change in Fair Value of Warrant Liability. In connection with the sale of our common stock and warrants from the registered direct offering in March 2010, we recorded the warrants as a liability at their fair value using a Black-Scholes model and remeasure the fair value at each reporting date until exercised or expired. Changes in the fair value of the warrants are reported in the statements of operations as non-operating income or expense. For the six months ended June 30, 2013, we reported income of $0.4 million related to the increase in fair value of these warrants as compared to an expense of $2.5 million for the six months ended June 30, 2012, representing an increase of $2.9 million or 116%. The market price of our common stock has been and may continue to be volatile. Consequently, future fluctuations in the price of our common stock may cause significant increases or decreases in the fair value of the warrant liability.

Other Income/Expense. There was no other income or expense for the six months ended June 30, 2013. Other income for the six months ended June 30, 2012 was $0.02 million and represents cash received from the sale of property, plant and equipment.

Liquidity and Capital Resources

Source of Liquidity

As a result of our significant research and development expenditures and the lack of any approved products to generate product sales revenue, we have not been profitable and have generated operating losses since we were incorporated in 2002. We have funded our operations principally with $148.7 million of proceeds from redeemable convertible preferred stock offerings, $75.0 million of gross proceeds from our IPO in June 2007, $18.5 million of gross proceeds from our Registered Direct Offering in March 2010, $65.6 million of gross proceeds from our stock offering in March 2012, $49.9 million from GSK’s investments in the Company in October 2010 and July 2012, and $80.0 million from non-refundable license fees from collaborations. In the future, we expect to fund our operations, in part, through the receipt of cost-sharing payments from GSK. The following table summarizes our significant funding sources as of June 30, 2013:

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			Approximate
			Amount (1)
Funding (2)	Year	No. Shares	(in thousands)

Series A Redeemable Convertible Preferred Stock	2002	444,443	$	2,500
Series B Redeemable Convertible Preferred Stock	2004, 2005, 2006, 2007	4,917,853	31,189
Series C Redeemable Convertible Preferred Stock	2005, 2006	5,820,020	54,999
Series D Redeemable Convertible Preferred Stock	2006, 2007	4,930,405	60,000
Common Stock	2007	5,000,000	75,000
Upfront License Fee from Shire	2007	—	50,000
Registered Direct Offering	2010	4,946,524	18,500
Upfront License Fee from GSK	2010	—	30,000
Common Stock - GSK Purchase	2010	6,866,245	31,285
Common Stock Offering	2012	11,500,000	65,550
Common Stock - GSK Purchase	2012	2,949,581	18,582

		47,375,071	$	437,605

(1) Represents gross proceeds

(2) The Series , B, C,and D Redeemable Convertible Preferred Stock was converted to common stock upon the effectiveness of our IPO

In addition, we have received reimbursement of research and development expenditures from GSK beginning with entry into the Original Collaboration Agreement (October 28, 2010) through June 30, 2013 of $27.2 million. We also received $31.1million in reimbursement of research and development expenditures from the Shire collaboration from the date of the agreement (November 7, 2007) through year-end 2009.

As of June 30, 2013, we had cash, cash equivalents and marketable securities of $74.2 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.

Net Cash Used in Operating Activities

Net cash used in operations for the six months ended June 30, 2012 was $19.2 million, due primarily to the net loss for the six months ended June 30, 2012 of $22.5 million and the change in operating assets and liabilities of $3.2 million. The change in operating assets and liabilities consisted of a increase in receivables from GSK related to the collaboration agreement of $2.2 million; a decrease of $3.2 million in prepaid assets primarily related to a receivable from the sale of state net operating loss carry forwards, or NOLs; a decrease of $0.3 in non-current assets related to the return of the security deposit on the terminated lease; a decrease in deferred revenue of $3.9 million related to the recognition of the upfront payment from GSK for the collaboration agreement and a decrease in accounts payable and accrued expenses of $0.6 million related to program expenses.

Net cash used in operations for the six months ended June 30, 2013 was $24.2 million, due primarily to the net loss for the six months ended June 30, 2013 of $32.8 million and the change in operating assets and liabilities of $5.0 million. The change in operating assets and liabilities consisted of a decrease in receivables from GSK related to the collaboration agreement of $2.2 million; a decrease of $0.3 million in prepaid assets primarily related to a receivable from the sale of state net operating loss carry forwards, or NOLs; an increase in deferred revenue of $2.3 million related to the recognition of the upfront payment from GSK for the collaboration agreement and an increase in accounts payable and accrued expenses of $0.2 million related to program expenses.

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Net Cash (Used in)/ Provided By Investing Activities

Net cash used in investing activities for the six months ended June, 2012 was $40.8 million. Net cash used by investing activities reflects $71.7 million for the purchase of marketable securities and $3.9 million for the acquisition of property and equipment partially offset by $34.8 million for the sale and redemption of marketable securities.

Net cash provided by investing activities for the six months ended June, 2013 was $13.9 million. Net cash provided by investing activities reflects $42.4 million for the sale and redemption of marketable securities, partially offset by $28.0 million for the purchase of marketable securities and $0.5 million for the acquisition of property and equipment.

Net Cash Provided by/ (Used in) Financing Activities

Net cash provided by financing activities for the six months ended June 30, 2012 was $63.2 million, consisting of $62.1 million from the issuance of common stock, $1.0 million as proceeds from the new secured loan agreement with SVB and $0.8 million from the exercise of stock options. This was partially offset by the payments of our secured loan agreement of $0.7 million.

Net cash used in financing activities for the six months ended June 30, 2013 was $0.2 million, consisting of payments of our secured loan agreement.

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:

· the progress and results of our clinical trials of our drug candidates, including migalastat HCl;

· the continuation of our collaboration with GSK and GSK’s achievement of milestone payments thereunder;

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

· the number and development requirements of other product candidates that we pursue;

· the costs of commercialization activities, including product marketing, sales and distribution;

· the emergence of competing technologies and other adverse market developments;

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

· the extent to which we acquire or invest in businesses, products and technologies; and

· our ability to establish collaborations and obtain milestone, royalty or other payments from any such collaborators.

We do not anticipate that we will generate revenue from commercial sales until at least 2014, if at all. 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 believe that our existing cash and cash equivalents and short term investments will be sufficient to cover our cash flow requirements into the fourth quarter of 2014.

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Financial Uncertainties Related to Potential Future Payments

Milestone Payments

We have acquired rights to develop and commercialize our product candidates through licenses granted by various parties. While our license agreements for migalastat HCl and AT2220 do not contain milestone payment obligations, two of these agreements related to afegostat tartrate do require us to make such payments if certain specified pre-commercialization events occur. Upon the satisfaction of certain milestones and assuming successful development of afegostat tartrate, we may be obligated, under the agreements that we have in place, to make future milestone payments aggregating up to approximately $7.9 million. However, such potential milestone payments are subject to many uncertain variables that would cause such payments, if any, to vary in size.

Under the Expanded Collaboration Agreement, GSK is eligible to receive U.S. regulatory approval milestones totaling $20 million for migalastat HCl monotherapy and migalastat HCl co-administered with ERT, and additional regulatory approval and product launch milestone payments totaling up to $35 million within seven years following the launch of the Co-formulated Product. We will also be responsible for certain pass-through milestone payments and single-digit royalties on the net U.S. sales of the Co-formulated Product that GSK must pay to a third party. In addition, we are no longer eligible to receive any milestones or royalties we would have been eligible to receive under the Original Collaboration Agreement other than a $3.5 million clinical development milestone achieved in the second quarter of 2012 and paid by GSK to us in the third quarter of 2012.

Royalties

Under our license agreements, if we owe royalties on net sales for one of our products to more than one licensor, 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 HCl and AT2220, we will owe royalties only to Mt. Sinai School of Medicine (MSSM). We would expect to pay royalties to all three licensors with respect to afegostat tartrate should we advance it to commercialization. To date, we have not made any royalty payments on sales of our products and believe we are at least a couple years away from selling any products that would require us to make any such royalty payments.

In accordance with our license agreement with MSSM, in the third quarter of 2012, we paid $0.4 million of the $3.5 million milestone payment received from GSK to MSSM. In the fourth quarter of 2010, we paid $3 million of the $30 million upfront payment received from GSK to MSSM. We will also be obligated to pay MSSM royalties on worldwide net sales of migalastat HCl.

Whether we will be obligated to make milestone or royalty payments in the future is subject to the success of our product development efforts and, accordingly, is inherently uncertain.

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ITEM 3. 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. At June 30, 2013, we held $74.2 million in cash, cash equivalents and available for sale securities and due to the short-term maturities of our investments, we do not believe that a 10% change in average interest rates would have a significant impact on our interest income. 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., although we do conduct some clinical activities outside the U.S. While most expenses are paid in U.S. dollars, there are minimal payments made in local foreign currency. If exchange rates undergo a change of 10%, we do not believe that it would have a material impact on our results of operations or cash flows.

ITEM 4. CONTROLS AND PROCEDURES

As of the end of the period covered by this Quarterly Report on Form 10-Q, an evaluation of the effectiveness of our disclosure controls and procedures (pursuant to Rule 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the Exchange Act)) was carried out under the supervision of our Principal Executive Officer and Principal Financial Officer, with the participation of our management. Based on that evaluation, the Principal Executive Officer and the Principal Financial Officer concluded that, as of the end of such period, our disclosure controls and procedures are effective in recording, processing, summarizing and reporting, on a timely basis, information required to be disclosed by us in the reports that we file or submit under the Exchange Act and are effective in ensuring that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is accumulated and communicated to our management, including our Principal Executive Officer and Principal Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

During the fiscal quarter covered by this report, there has been no change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that occurred during the fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We are not a party to any material legal proceedings.

ITEM 1A. RISK FACTORS

There have been no material changes with respect to the Risk Factors disclosed in our Annual Report on Form 10-K for the year ended December 31, 2012.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Recent Sales of Unregistered Securities

None.

Use of Proceeds

March 2012 Stock Offering

In March 2012, the Company sold 11.5 million shares of its common stock at a public offering price of $5.70 per share through a Registration Statement on Form S-3 (File No. 333-158405) that was declared effective by the SEC on May 27, 2009. The aggregate offering proceeds were $65.6 million. Leerink Swann LLC and Cowen and Company served as underwriters for the offering.

We paid Leerink Swann LLC and Cowen and Company an underwriting fee equal to 5.0% of the aggregate offering proceeds, approximately $3.3 million. The net proceeds of the offering were approximately $62.0 million after deducting the underwriting fee and all other estimated offering expenses. No offering expenses were paid directly or indirectly to any of our directors or officers (or their associates) or persons owning ten percent or more of any class of our equity securities or to any other affiliates.

As of June 30, 2013, approximately $32.1 million in net proceeds from this stock offering were maintained in money market funds and in investment-grade, interest bearing instruments, pending their use. We have used the remaining proceeds from this offering to advance the clinical and preclinical pharmacological chaperone programs and for other general corporate purposes.

The foregoing represents our best estimate of our use of proceeds for the period indicated.

Issuer Purchases of Equity Securities

The Company did not purchase any shares of its common stock for the three months ended June 30, 2013.

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ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

None.

ITEM 5. OTHER INFORMATION

None.

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ITEM 6. EXHIBITS

Exhibit
Number		Description

3.1 (1)		Restated Certificate of Incorporation

3.2 (2)		Amended and Restated By-laws

10.1(3)		Amendment to Employment Agreement, dated as of April 18, 2013, between the Registrant and John F. Crowley

10.2(3)		Letter Agreement, dated as of April 18, 2013, between the Registrant and William D. Baird, III

10.3(3)		Letter Agreement, dated as of April 18, 2013, between the Registrant and Bradley L. Campbell

10.4(3)		Letter Agreement, dated as of April 18, 2013, between the Registrant and David J. Lockhart.

10.5		Letter Agreement, dated as of April 18, 2013, between the Registrant and Joan C. Winterbottom

10.6		Letter Agreement, dated as of June 5, 2013, between the Registrant and Jeffrey P. Castelli

10.7		Letter Agreement, dated as of June 5, 2013, between the Registrant and Jayne Gershkowitz

10.8		Letter Agreement, dated as of June 5, 2013, between the Registrant and Peter M. Macaluso

31.1*		Certification of Principal Executive Officer pursuant to Rules 13a-14 and 15d-14 promulgated pursuant to the Securities Exchange Act of 1934, as amended

31.2*		Certification of Principal Financial Officer pursuant to Rules 13a-14 and 15d-14 promulgated pursuant to the Securities Exchange Act of 1934, as amended

32.1*		Certification of Principal Executive Officer and Principal Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

101		The following financial information from this Quarterly Report on Form 10-Q for the quarter ended June 30, 2013, formatted in XBRL (Extensible Business Reporting Language) and filed electronically herewith: (i) the Consolidated Balance Sheets as of June 30, 2013 and December 31, 2012; (ii) the Consolidated Statements of Operations for the three and six months ended June 30, 2013 and 2012; (iii) the Consolidated Statements of Comprehensive Loss for the three and six months ended June 30, 2013 and 2012; (iv) the Consolidated Statements of Cash Flows for the six months ended June 30, 2013 and 2012; (v) and the Notes to the Consolidated Financial Statements.

(1)		Incorporated by reference to Exhibit 3.1 to our Annual Report on Form 10K filed on February 28, 2012

(2)		Incorporated by reference to Exhibit 3.4 to our Registration Statement on Form S-1
(3)		Incorporate by reference to our Current Report on Form 8-K dated April 24, 2013

*		These certifications are being furnished solely to accompany this quarterly report pursuant to 18 U.S.C. Section 1350, and are not being filed for purposes of Section 18 of the Securities Exchange Act of 1934 and are not to be incorporated by reference into any filing of Amicus Therapeutics, Inc., whether made before or after the date hereof, regardless of any general incorporation language in such filing.

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SIGNATURES

Pursuant to the requirements of the Securities and Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	AMICUS THERAPEUTICS, INC.

Date: August 7, 2013	By:	/s/ John F. Crowley

	John F. Crowley
	Chairman and Chief Executive Officer
	(Principal Executive Officer)

Date: August 7, 2013	By:	/s/ William D. Baird III

	William D. Baird III
	Chief Financial Officer
	(Principal Financial Officer)

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INDEX TO EXHIBITS

Exhibit
Number		Description

3.1 (1)		Restated Certificate of Incorporation

3.2 (2)		Amended and Restated By-laws

10.1(3)		Amendment to Employment Agreement, dated as of April 18, 2013, between the Registrant and John F. Crowley

10.2(3)		Letter Agreement, dated as of April 18, 2013, between the Registrant and William D. Baird, III

10.3(3)		Letter Agreement, dated as of April 18, 2013, between the Registrant and Bradley L. Campbell

10.4(3)		Letter Agreement, dated as of April 18, 2013, between the Registrant and David J. Lockhart.

10.5		Letter Agreement, dated as of April 18, 2013, between the Registrant and Joan C. Winterbottom

10.6		Letter Agreement, dated as of June 5, 2013, between the Registrant and Jeffrey P. Castelli

10.7		Letter Agreement, dated as of June 5, 2013, between the Registrant and Jayne Gershkowitz

10.8		Letter Agreement, dated as of June 5, 2013, between the Registrant and Peter M. Macaluso

31.1*		Certification of Principal Executive Officer pursuant to Rules 13a-14 and 15d-14 promulgated pursuant to the Securities Exchange Act of 1934, as amended

31.2*		Certification of Principal Financial Officer pursuant to Rules 13a-14 and 15d-14 promulgated pursuant to the Securities Exchange Act of 1934, as amended

32.1*		Certification of Principal Executive Officer and Principal Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

101		The following financial information from this Quarterly Report on Form 10-Q for the quarter ended June 30, 2013, formatted in XBRL (Extensible Business Reporting Language) and filed electronically herewith: (i) the Consolidated Balance Sheets as of June 30, 2013 and December 31, 2012; (ii) the Consolidated Statements of Operations for the three and six months ended June 30, 2013 and 2012; (iii) the Consolidated Statements of Comprehensive Loss for the three and six months ended June 30, 2013 and 2012; (iv) the Consolidated Statements of Cash Flows for the six months ended June 30, 2013 and 2012; (v) and the Notes to the Consolidated Financial Statements.

(1)		Incorporated by reference to Exhibit 3.1 to our Annual Report on Form 10K filed on February 28, 2012

(2)		Incorporated by reference to Exhibit 3.4 to our Registration Statement on Form S-1

(3)		Incorporate by reference to our Current Report on Form 8-K dated April 24, 2013

*		These certifications are being furnished solely to accompany this quarterly report pursuant to 18 U.S.C. Section 1350, and are not being filed for purposes of Section 18 of the Securities Exchange Act of 1934 and are not to be incorporated by reference into any filing of Amicus Therapeutics, Inc., whether made before or after the date hereof, regardless of any general incorporation language in such filing.

Exhibit 10.5

April 18, 2013

Joan Winterbottom

Senior Vice President, Human Resources

Amicus Therapeutics, Inc.

Dear Joan:

Reference is hereby made to that certain letter agreement by and between you and Amicus Therapeutics, Inc. (the “Company”) dated July 26, 2012 (the “Letter Agreement”).

You and the Company desire to modify the terms of the Letter Agreement as currently in effect to reflect certain changes to your severance entitlements and to eliminate a tax “gross-up” related to penalties under Section 409A of the Internal Revenue Code. Thus, in accordance with the terms of the Letter Agreement, the Letter Agreement is hereby modified as follows:

1. The eleventh paragraph of the Letter Agreement is amended and restated in its entirety to read as follows:

If there is a Change in Control Event (as defined below) and either you resign with Good Reason (as defined below) or are terminated without Cause, in either case within twelve months following such Change in Control Event, then you (1) will be entitled to receive 18 months of salary continuation, to be paid in accordance with the Company’s payroll practices; (2) if such resignation or termination occurs between June 30 and December 31, you will be entitled to a payment of a bonus equal to your bonus earned in the preceding year (if any) pro-rated for the number of months actually worked in the year of resignation or termination, payable within 2 ½ months following such termination or resignation; (3) you will be entitled to waiver of the applicable premiums otherwise payable for continuation of your health benefit coverage under COBRA for the 18 month period following such resignation or termination; and (4) all of your otherwise unvested stock options will have their remaining vesting schedule accelerated so that all stock options are fully vested.

2. The thirteenth paragraph of the Letter Agreement is amended and restated in its entirety to read as follows:

1 Cedar Brook Drive Cranbury, NJ 08512 T: 609-662-2000 F: 609-662-2001 www.amicusrx.com

payments and benefits that would otherwise be paid prior to the Release Deadline will accrue and be paid on the Release Deadline, provided the release has by then become irrevocable, and any remaining payment and benefits will thereafter be delivered as otherwise scheduled. However, if the Release Deadline is more than 30 days and your release becomes irrevocable before the Release Deadline, the Company may elect to pay (or commence to pay) such severance payments and benefits up to 30 days prior to the Release Deadline.

3. The fourteenth paragraph of the Letter Agreement is amended and restated in its entirety to read as follows:

It is the intention of the parties that compensation paid or delivered to you by the Company either is paid in compliance with, or is exempt from, Section 409A of the Internal Revenue Code of 1986, as amended, and the rules and regulations promulgated thereunder (collectively, “Section 409A”) and this letter agreement should be interpreted accordingly. However, the Company does not warrant the tax treatment of any amount payable to you.

The Letter Agreement, as amended by the foregoing changes, is hereby ratified and confirmed in all respects.

To acknowledge your agreement with the foregoing and your intent to be legally bound thereby, please sign this letter on the line provided below and return the executed version to me.

Sincerely,

Amicus Therapeutics, Inc.

By:	/s/ John F. Crowley
	Name:	John F. Crowley
	Title:	Chairman and Chief Executive Officer

	Accepted and Agreed:

	/s/ Joan Winterbottom

	Joan Winterbottom

	Dated: April 18, 2013

Exhibit 10.6

LETTER AGREEMENT

Jeffrey P. Castelli

Vice President, Program and Portfolio Management

Amicus Therapeutics, Inc.

1 Cedar Brook Drive

Cranbury, NJ 08512

Re: Severance and Change in Control Agreements

Dear Jeff:

On behalf of Amicus Therapeutics, Inc., (the “Company”), this Letter Agreement, dated as of June 5, 2013, shall serve to confirm our agreement in the event Amicus terminates your employment without cause or in the event of a Change in Control, Sale or Merger of the Company. By accepting the terms of this Letter Agreement, you agree that the rights identified in this Letter Agreement contain the complete understanding between you and the Company related to Severance and Change in Control payments and supersedes and replaces all previous agreements related to such payments. The May 19, 2005 Offer of Employment Letter countersigned by you, a copy of which is attached hereto, shall otherwise remain in full force and effect and is hereby confirmed and ratified.

Severance Pay

In the event that your employment is terminated by the Company, except for “Cause” as defined below, you will be eligible to receive the following:

1. six (6) months salary continuation to be paid in accordance with the Company’s payroll practices;

2. an additional six (6) months of option vesting;

3. in the event that your termination occurs after June 30th of the calendar year, you will be entitled to a payment of a bonus equal to the bonus earned in the preceding year pro-rated for the number of months actually worked in the year of termination, payable on the date of termination; and

4. you will be entitled to a continuation of your health benefit coverage under COBRA, premiums to be paid by the Company, for a period of twelve (12) months, which shall commence on the date of termination and run concurrently with the period of salary continuation.

For purposes of this Agreement, “Cause” means termination for any of the following reasons: (1) willful or deliberate misconduct by you that materially damages the Company; (2)

1 Cedar Brook Drive Cranbury, NJ 08512 T: 609-662-2000 F: 609-662-2001 www.amicustherapeutics.com

misappropriation of Company assets; (3) conviction of, or a plea of guilty or “no contest” to, a felony; or (4) any willful disobedience of the lawful and unambiguous instructions of the CEO of the Company; provided that the CEO has given you written notice of such disobedience or neglect and you have failed to cure such disobedience or neglect within a period reasonable under the circumstances.

Change in Control

If there is a Change in Control Event (as defined below) and either you resign with Good Reason (as defined below) or are terminated without Cause, in either case within twelve months following such Change in Control Event, then you (1) will be entitled to receive 12 months of salary continuation, to be paid in accordance with the Company’s payroll practices; (2) if such resignation or termination occurs between June 30 and December 31, you will be entitled to a payment of a bonus equal to your bonus earned in the preceding year (if any) pro-rated for the number of months actually worked in the year of resignation or termination, payable within 2 ½ months following such termination or resignation; (3) you will be entitled to waiver of the applicable premiums otherwise payable for continuation of your health benefit coverage under COBRA for the 12 month period following such resignation or termination; and (4) all of your otherwise unvested stock options will have their remaining vesting schedule accelerated so that all stock options are fully vested.

“Change in Control Event” means any of the following: (i) any person or entity (except for a current stockholder) becomes the beneficial owner of greater than 50% of the then outstanding voting power of the Company; (ii) a merger or consolidation with another entity where the voting securities of the Company outstanding immediately before the transaction constitute less than a majority of the voting power of the voting securities of the Company or the surviving entity outstanding immediately after the transaction, or (iii) the sale or disposition of all or substantially all of the Company’s assets. “Good Reason” means (i) a material diminution in your authorities, duties, or responsibilities, or (ii) a material change in the geographic location at which you must perform services; provided, however, that you must provide the Company with notice of the existence of the Good Reason condition within ninety (90) days of its initial existence after which the Company will have a period of thirty (30) days within which it may remedy the condition and not be required to pay the severance payment; and provided, further, that any Good Reason termination must occur within two (2) years of the initial existence of the Good Reason condition.

Notwithstanding any other provision of this letter agreement, your right to receive severance payments and benefits pursuant to this letter agreement shall be subject to the condition that you execute a full release and waiver of all claims against the Company and related parties in a form acceptable to the Company and that such release be delivered to the Company and become irrevocable by a deadline specified by the Company (the “Release Deadline”), which deadline will be no later than 60 days following the cessation of your employment. Any payments and benefits that would otherwise be paid prior to the Release Deadline will accrue and be paid on the Release Deadline, provided the release has by then become irrevocable, and any remaining payment and benefits will thereafter be delivered as otherwise scheduled. However, if the Release Deadline is more than 30 days and your release becomes irrevocable before the Release

Deadline, the Company may elect to pay (or commence to pay) such severance payments and benefits up to 30 days prior to the Release Deadline.

For the purposes of determining when amounts otherwise payable on account of your termination of employment will be paid, which amounts become due because of your termination of employment, “termination of employment” or words of similar import shall be construed as the date that you first incur a “separation from service” for purposes of Section 409A on or following termination of employment. Furthermore, if you are a “specified employee” of a public company as determined pursuant to Section 409A as of your termination of employment, any amounts payable on account of your termination of employment which constitute deferred compensation within the meaning of Section 409A and which are otherwise payable during the first six months following your termination (or prior to your death after termination) shall be paid to you in a cash lump-sum on the earlier of (1) the date of your death and (2) the first business day of the seventh calendar month immediately following the month in which your termination occurs.

In applying Section 409A to amounts paid pursuant to this letter, any right to a series of installment payments shall be treated as a right to a series of separate payments.

Employment “At-Will”

It is important that you understand that the Company does not guarantee employment for any specific period of time. You will continue to be employed on at “at-will” basis. This means that both the Company and you will have the right to terminate your employment at any time, for any reason, with or without prior notice or cause. Neither you nor the Company will have an express or implied contract limiting your right to resign or the Company’s right to terminate your employment at any time, for any reason, with or without prior notice or cause. The “at-will” relationship will apply to you throughout your employment and cannot be changed except by an express individual written employment agreement signed by you and the Chief Executive Officer of the Company.

It is understood and agreed that this Letter Agreement constitutes the full agreement between you and the Company on the subjects of Severance and Change in Control payments. By signing below, you agree that no other promises, express or implied, have been made to you either verbally or in writing and that no further modifications to these terms and conditions will be effective except by a written agreement signed by the Chief Executive Officer of the Company and you and as authorized by the Company’s Board of Directors or an authorized Committee thereof. This Letter Agreement may be executed in counterparts, each of which shall be deemed an original but all of which shall together constitute on and the same agreement.

[Signature Page Follows]

			Amicus Therapeutics, Inc.


				/s/ John F. Crowley
			By:		John F. Crowley
					Chairman and Chief Executive Officer

Accepted and Agreed:


By:	/s/ Jeffrey P. Castelli
		Jeffrey P. Castelli

Exhibit 10.7

LETTER AGREEMENT

Jayne Gershkowitz

Vice President, Patient Advocacy and Public Policy

Amicus Therapeutics, Inc.

1 Cedar Brook Drive

Cranbury, NJ 08512

Re: Severance and Change in Control Agreements

Dear Jayne:

On behalf of Amicus Therapeutics, Inc., (the “Company”), this Letter Agreement, dated as of June 5, 2013, shall serve to confirm our agreement in the event Amicus terminates your employment without cause or in the event of a Change in Control, Sale or Merger of the Company. By accepting the terms of this Letter Agreement, you agree that the rights identified in this Letter Agreement contain the complete understanding between you and the Company related to Severance and Change in Control payments and supersedes and replaces all previous agreements related to such payments. The May 12, 2006 Offer of Employment Letter countersigned by you, a copy of which is attached hereto, shall otherwise remain in full force and effect and is hereby confirmed and ratified.

Severance Pay

In the event that your employment is terminated by the Company, except for “Cause” as defined below, you will be eligible to receive the following:

1. six (6) months salary continuation to be paid in accordance with the Company’s payroll practices;

2. an additional six (6) months of option vesting;

For purposes of this Agreement, “Cause” means termination for any of the following reasons: (1) willful or deliberate misconduct by you that materially damages the Company; (2)

1 Cedar Brook Drive Cranbury, NJ 08512 T: 609-662-2000 F: 609-662-2001 www.amicustherapeutics.com

Change in Control

If there is a Change in Control Event (as defined below) and either you resign with Good Reason (as defined below) or are terminated without Cause, in either case within twelve months following such Change in Control Event, then you (1) will be entitled to receive 12 months of salary continuation, to be paid in accordance with the Company’s payroll practices; (2) if such resignation or termination occurs between June 30 and December 31, you will be entitled to a payment of a bonus equal to your bonus earned in the preceding year (if any) pro-rated for the number of months actually worked in the year of resignation or termination, payable within 2 ½ months following such termination or resignation; (3) you will be entitled to waiver of the applicable premiums otherwise payable for continuation of your health benefit coverage under COBRA for the 12 month period following such resignation or termination; and (4) all of your otherwise unvested stock options will have their remaining vesting schedule accelerated so that all stock options are fully vested.

Deadline, the Company may elect to pay (or commence to pay) such severance payments and benefits up to 30 days prior to the Release Deadline.

In applying Section 409A to amounts paid pursuant to this letter, any right to a series of installment payments shall be treated as a right to a series of separate payments.

Employment “At-Will”

[Signature Page Follows]

			Amicus Therapeutics, Inc.


				/s/ John F. Crowley
			By:		John F. Crowley
					Chairman and Chief Executive Officer

Accepted and Agreed:


By:	/s/ Jayne Gershkowitz
		Jayne Gershkowitz

Exhibit 10.8

LETTER AGREEMENT

Peter Macaluso

Vice President and Corporate Counsel

Amicus Therapeutics, Inc.

1 Cedar Brook Drive

Cranbury, NJ 08512

Re: Severance and Change in Control Agreements

Dear Peter:

On behalf of Amicus Therapeutics, Inc., (the “Company”), this Letter Agreement, dated as of June 5, 2013, shall serve to confirm our agreement in the event Amicus terminates your employment without cause or in the event of a Change in Control, Sale or Merger of the Company. By accepting the terms of this Letter Agreement, you agree that the rights identified in this Letter Agreement contain the complete understanding between you and the Company related to Severance and Change in Control payments and supersedes and replaces all previous agreements related to such payments. The June 17, 2008 Offer of Employment Letter countersigned by you, a copy of which is attached hereto, shall otherwise remain in full force and effect and is hereby confirmed and ratified.

Severance Pay

In the event that your employment is terminated by the Company, except for “Cause” as defined below, you will be eligible to receive the following:

1. six (6) months salary continuation to be paid in accordance with the Company’s payroll practices;

2. an additional six (6) months of option vesting;

For purposes of this Agreement, “Cause” means termination for any of the following reasons: (1) willful or deliberate misconduct by you that materially damages the Company; (2)

1 Cedar Brook Drive Cranbury, NJ 08512 T: 609-662-2000 F: 609-662-2001 www.amicustherapeutics.com

Change in Control

If there is a Change in Control Event (as defined below) and either you resign with Good Reason (as defined below) or are terminated without Cause, in either case within twelve months following such Change in Control Event, then you (1) will be entitled to receive 12 months of salary continuation, to be paid in accordance with the Company’s payroll practices; (2) if such resignation or termination occurs between June 30 and December 31, you will be entitled to a payment of a bonus equal to your bonus earned in the preceding year (if any) pro-rated for the number of months actually worked in the year of resignation or termination, payable within 2 ½ months following such termination or resignation; (3) you will be entitled to waiver of the applicable premiums otherwise payable for continuation of your health benefit coverage under COBRA for the 12 month period following such resignation or termination; and (4) all of your otherwise unvested stock options will have their remaining vesting schedule accelerated so that all stock options are fully vested.

Deadline, the Company may elect to pay (or commence to pay) such severance payments and benefits up to 30 days prior to the Release Deadline.

In applying Section 409A to amounts paid pursuant to this letter, any right to a series of installment payments shall be treated as a right to a series of separate payments.

Employment “At-Will”

[Signature Page Follows]

		Amicus Therapeutics, Inc.


			/s/ John F. Crowley
		By:		John F. Crowley
				Chairman and Chief Executive Officer

Accepted and Agreed:


By:	/s/ Peter Macaluso
	Peter Macaluso

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 quarterly report on Form 10-Q 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 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 preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 7, 2013		/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 quarterly report on Form 10-Q of Amicus Therapeutics, Inc.;

(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: August 7, 2013		/s/ William D. Baird III
		William D. Baird III
		Chief Financial Officer

Exhibit 32.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER AND

PRINCIPAL FINANCIAL OFFICER PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Each of the undersigned hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, in his capacity as an officer of Amicus Therapeutics, Inc. (the “Company”), that, to his knowledge, the Quarterly Report of the Company on Form 10-Q for the period ended June 30, 2013, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)) and that the information contained in such report fairly presents, in all material respects, the financial condition and results of operations of the Company. This written statement is being furnished to the Securities and Exchange Commission as an exhibit to such Form 10-Q. A signed original of this statement has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

Date: August 7, 2013	By:	/s/ John F. Crowley
		John F. Crowley
		Chairman and Chief Executive Officer

Date: August 7, 2013	By:	/s/ William D. Baird III
		William D. Baird III
		Chief Financial Officer