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Q2 2024 Total Revenue of $126.7M, a 34% Increase Year-over-Year Galafold® Q2 Revenue of $110.8M, up 17% Year-over-Year Pombiliti® + Opfolda® Q2 Revenue of $15.9M, up 44% from Q1 2024 Raising 2024 Total Revenue Growth Guidance to 26%-31% at CER and 2024 Galafold Growth Guidance to 14%-18% at CER Narrowing non-GAAP Operating Expense Guidance to $345M to $360M Non-GAAP Profitability Achieved in Q2 and H1 2024 with Acceleration Expected in H2 Conference Call and Webcast Today at 8:30 a.m. ET PRINCETON, N.J., Aug. 08, 2024 (GLOBE NEWSWIRE) -- Amicus Therapeutics (Nasdaq: FOLD), a patient-dedicated global biotechnology company focused on developing and commercializing novel medicines for rare diseases, today announced financial results for the second quarter ended June 30, 2024. “In the first half of 2024 we demonstrated strong commercial execution, leading to robust revenue growth and achieving non-GAAP profitability for the period,” said Bradley Campbell, President and Chief Executive Officer of Amicus Therapeutics, Inc. “We are very pleased with the continued global uptake of Galafold and sustained patient demand leading to the increase of our 2024 guidance. The commercial launch of Pombiliti and Opfolda is performing exceptionally well with a steady addition of new patients in each of the approved markets. Looking ahead, we remain confident in our ability to deliver significant revenue growth, accomplish our objective of achieving full-year non-GAAP profitability and continuing to deliver on our mission for people living with rare diseases.” Financial and Corporate Highlights: Total revenue in the second quarter 2024 was $126.7 million, a year-over-year increase of 34% from total revenue of $94.5 million in the second quarter 2023. On a constant currency basis (CER)1, second quarter 2024 total revenue growth was 36%. Given strong performance in the first half 2024, the Company is raising its full year 2024 total revenue growth guidance to 26% to 31% on a constant currency basis (CER)1. (in thousands)Three Months Ended June 30, Year over Year % Growth Six Months Ended June 30, Year over Year % Growth 2024 2023 Reported at CER1 2024 2023 Reported at CER1Galafold®$110,817 $94,331 17% 19% $210,176 $180,443 16% 17% Pombiliti® + Opfolda®$15,852 $172 n/a n/a $26,896 $330 n/a n/aNet Product Revenues$126,669 $94,503 34% 36% $237,072 $180,773 31% 32% Galafold (migalastat) net product sales were $110.8 million in the second quarter 2024, a year-over-year increase of 17%, or 19% at constant exchange rates1, reflecting continued strong demand. As a result of strong performance in the first half 2024, the company is raising its revenue growth guidance for Galafold to 14% to 18% on a constant currency basis (CER)1.Pombiliti (cipaglucosidase alfa-atga) + Opfolda (miglustat) net product sales were $15.9 million in the second quarter 2024, a 44% increase from the first quarter of 2024. As of the end of July, 186 patients have been treated or are scheduled to be treated with commercial product in five markets (USA, Germany, UK, Spain and Austria). Given strong launch momentum, the company is well on-track to achieve full year 2024 revenue guidance for Pombiliti + Opfolda of $62 million to $67 million on a constant currency basis (CER)1.Swissmedic in Switzerland approved Pombiliti + Opfolda on July 4th as a long-term enzyme replacement therapy and enzyme stabilizer for adults with late-onset Pompe disease. Additional regulatory reviews are ongoing in Australia and Canada.Total GAAP operating expenses of $100.4 million for the second quarter 2024 decreased by 4% as compared to $104.2 million for the second quarter 2023. Total non-GAAP operating expenses of $82.1 million for the second quarter 2024 decreased by 2% as compared to $84.0 million for the second quarter 2023. Given our continued financial discipline in the first half of 2024, the Company enhances its non-GAAP Operating Expense guidance3 to $345 million to $360 million.GAAP net loss was $15.7 million, or $0.05 per share, for the second quarter 2024, and was reduced compared to a net loss of $43.2 million, or $0.15 per share, for the second quarter 2023.Non-GAAP net income was $18.5 million, or $0.06 per share, for the second quarter 2024, compared to a non-GAAP net loss of $20.3 million, or $0.07 per share, for second quarter 20232. Non-GAAP profitability was also achieved in the first half 2024. The Company expects non-GAAP profitability to accelerate in the second half 2024.Cash, cash equivalents, and marketable securities totaled $260.1 million at June 30, 2024, compared to $286.2 million at December 31, 2023. 2024 Financial Guidance: Previous Updated Total Revenue Growth125% to 30%→26% to 31% Galafold Revenue Growth113% to 17%→14% to 18% Pombiliti + Opfolda Revenue1$62M to $67M→$62M to $67M Non-GAAP Operating Expense3$345M to $365M→$345M to $360M Amicus is focused on the following key strategic priorities in 2024: Delivering double-digit Galafold revenue growthExecuting multiple successful launches of Pombiliti + OpfoldaAdvancing ongoing studies to support medical and scientific leadership in Fabry and Pompe diseasesAchieving full-year non-GAAP profitability4 1 At constant exchange rates (CER). In order to illustrate underlying performance, Amicus discusses its results in terms of CER growth. This represents growth calculated as if the exchange rates had remained unchanged from those used in the comparative period. Full-year revenue guidance utilizes actual exchange rate as of December 31, 2023.2 Full reconciliation of GAAP results to the Company’s non-GAAP adjusted measures for the reporting period(s) appear in the tables to this press release.3 A reconciliation of the differences between the non-GAAP expectation and the corresponding GAAP measure is not available without unreasonable effort due to high variability, complexity, and low visibility as to the items that would be excluded from the GAAP measure.4 Based on projections of Amicus’ non-GAAP Net (Loss) Income under current operating plans, which includes successful Pombiliti + Opfolda launch and continued Galafold growth. Amicus defines non-GAAP Net (Loss) Income as GAAP Net (Loss) Income excluding the impact of share-based compensation expense, changes in fair value of contingent consideration, loss on impairment of assets, depreciation and amortization, acquisition-related income (expense), loss on extinguishment of debt, restructuring charges and income taxes. Conference Call and Webcast Amicus Therapeutics will host a conference call and audio webcast today, August 8, 2024, at 8:30 a.m. ET to discuss the second quarter 2024 financial results and corporate updates. Participants and investors interested in accessing the call by phone will need to register using the online registration form. After registering, all phone participants will receive a dial-in number along with a PIN number to access the event. A live audio webcast and related presentation materials can also be accessed via the Investors section of the Amicus Therapeutics corporate website at ir.amicusrx.com. Web participants are encouraged to register on the website 15 minutes prior to the start of the call. An archived webcast and accompanying slides will be available on the Company's website shortly after the conclusion of the live event. About Galafold Galafold® (migalastat) 123 mg capsules is an oral pharmacological chaperone of alpha-Galactosidase A (alpha-Gal A) for the treatment of Fabry disease in adults who have amenable galactosidase alpha gene (GLA) variants. In these patients, Galafold works by stabilizing the body’s own dysfunctional enzyme so that it can clear the accumulation of disease substrate. Globally, Amicus Therapeutics estimates that approximately 35 to 50 percent of people living with Fabry disease may have amenable GLA variants, though amenability rates within this range vary by geography. Galafold is approved in more than 40 countries around the world, including the U.S., EU, U.K., and Japan. U.S. INDICATIONS AND USAGEGalafold is indicated for the treatment of adults with a confirmed diagnosis of Fabry disease and an amenable galactosidase alpha gene (GLA) variant based on in vitro assay data. This indication is approved under accelerated approval based on reduction in kidney interstitial capillary cell globotriaosylceramide (KIC GL-3) substrate. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials. U.S. IMPORTANT SAFETY INFORMATION ADVERSE REACTIONSThe most common adverse reactions reported with Galafold (≥10%) were headache, nasopharyngitis, urinary tract infection, nausea and pyrexia. USE IN SPECIFIC POPULATIONSThere is insufficient clinical data on Galafold use in pregnant women to inform a drug-associated risk for major birth defects and miscarriage. Advise women of the potential risk to a fetus. It is not known if Galafold is present in human milk. Therefore, the developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for Galafold and any potential adverse effects on the breastfed child from Galafold or from the underlying maternal condition. Galafold is not recommended for use in patients with severe renal impairment or end-stage renal disease requiring dialysis. The safety and effectiveness of Galafold have not been established in pediatric patients. To report Suspected Adverse Reactions, contact Amicus Therapeutics at 1-877-4AMICUS or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. For additional information about Galafold, including the full U.S. Prescribing Information, please visit https://www.amicusrx.com/pi/Galafold.pdf. About Pombiliti + OpfoldaPombiliti + Opfolda, is a two-component therapy that consists of cipaglucosidase alfa-atga, a bis-M6P-enriched rhGAA that facilitates high-affinity uptake through the M6P receptor while retaining its capacity for processing into the most active form of the enzyme, and the oral enzyme stabilizer, miglustat, that’s designed to reduce loss of enzyme activity in the blood. U.S. INDICATIONS AND USAGEPOMBILITI in combination with OPFOLDA is indicated for the treatment of adult patients with late-onset Pompe disease (lysosomal acid alpha-glucosidase [GAA] deficiency) weighing ≥40 kg and who are not improving on their current enzyme replacement therapy (ERT). SAFETY INFORMATION HYPERSENSITIVITY REACTIONS INCLUDING ANAPHYLAXIS: Appropriate medical support measures, including cardiopulmonary resuscitation equipment, should be readily available. If a severe hypersensitivity reaction occurs, POMBILITI should be discontinued immediately and appropriate medical treatment should be initiated. INFUSION-ASSOCIATED REACTIONS (IARs): If severe IARs occur, immediately discontinue POMBILITI and initiate appropriate medical treatment. RISK OF ACUTE CARDIORESPIRATORY FAILURE IN SUSCEPTIBLE PATIENTS: Patients susceptible to fluid volume overload, or those with acute underlying respiratory illness or compromised cardiac or respiratory function, may be at risk of serious exacerbation of their cardiac or respiratory status during POMBILITI infusion. See PI for complete Boxed Warning. CONTRAINDICATION: POMBILITI in combination with Opfolda is contraindicated in pregnancy. EMBRYO-FETAL TOXICITY: May cause embryo-fetal harm. Advise females of reproductive potential of the potential risk to a fetus and to use effective contraception during treatment and for at least 60 days after the last dose. Adverse Reactions: Most common adverse reactions ≥ 5% are headache, diarrhea, fatigue, nausea, abdominal pain, and pyrexia. Please see full PRESCRIBING INFORMATION, including BOXED WARNING, for POMBILITI (cipaglucosidase alfa-atga) LINK and full PRESCRIBING INFORMATION for OPFOLDA (miglustat) LINK. About Amicus Therapeutics Amicus Therapeutics (Nasdaq: FOLD) is a global, patient-dedicated biotechnology company focused on discovering, developing and delivering novel high-quality medicines for people living with rare diseases. With extraordinary patient focus, Amicus Therapeutics is committed to advancing and expanding a pipeline of cutting-edge, first- or best-in-class medicines for rare diseases. For more information, please visit the company’s website at www.amicusrx.com, and follow on X and LinkedIn. Non-GAAP Financial Measures In addition to financial information prepared in accordance with U.S. GAAP, this press release also contains adjusted financial measures that we believe provide investors and management with supplemental information relating to operating performance and trends that facilitate comparisons between periods and with respect to projected information. These adjusted financial measures are non-GAAP measures and should be considered in addition to, but not as a substitute for, the information prepared in accordance with U.S. GAAP. We use these non-GAAP measures as key performance measures for the purpose of evaluating operational performance and cash requirements internally. We typically exclude certain GAAP items that management does not believe affect our basic operations and that do not meet the GAAP definition of unusual or non-recurring items. Other companies may define these measures in different ways. When we provide our expectation for non-GAAP operating expenses and profitability on a forward-looking basis, a reconciliation of the differences between the non-GAAP expectation and the corresponding GAAP measure generally is not available without unreasonable effort due to potentially high variability, complexity and low visibility as to the items that would be excluded from the GAAP measure in the relevant future period, such as unusual gains or losses. The variability of the excluded items may have a significant, and potentially unpredictable, impact on our future GAAP results. Forward Looking Statement This press release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 relating to preclinical and clinical development of our product candidates, the timing and reporting of results from preclinical studies and clinical trials, the prospects and timing of the potential regulatory approval of our product candidates, commercialization plans, manufacturing and supply plans, financing plans, and the projected revenues and cash position for the Company. The inclusion of forward-looking statements should not be regarded as a representation by us that any of our plans will be achieved. Any or all of the forward-looking statements in this press release may turn out to be wrong and can be affected by inaccurate assumptions we might make or by known or unknown risks and uncertainties. For example, with respect to statements regarding the goals, progress, timing, and outcomes of discussions with regulatory authorities and pricing and reimbursement authorities, are based on current information. Actual results may differ materially from those set forth in this release due to the risks and uncertainties inherent in our business, including, without limitation: the potential that results of clinical or preclinical studies indicate that the product candidates are unsafe or ineffective; the potential that it may be difficult to enroll patients in our clinical trials; the potential that regulatory authorities may not grant or may delay approval for our product candidates; the potential that required regulatory inspections may be delayed or not be successful and delay or prevent product approval; the potential that we may not be successful in negotiations with pricing and reimbursement authorities; the potential that we may not be successful in commercializing Galafold and/or Pombiliti and Opfolda in Europe, the UK, the US and other geographies; the potential that preclinical and clinical studies could be delayed because we identify serious side effects or other safety issues; the potential that we may not be able to manufacture or supply sufficient clinical or commercial products; and the potential that we will need additional funding to complete all of our studies, the manufacturing, and commercialization of our products. With respect to statements regarding corporate financial guidance and financial goals and the expected attainment of such goals and projections of the Company's revenue, non-GAAP profitability and cash position, actual results may differ based on market factors and the Company's ability to execute its operational and budget plans. In addition, all forward-looking statements are subject to other risks detailed in our Annual Report on Form 10-K for the year ended December 31, 2023, and on Form 10-Q for the quarter ended June 30, 2024, to be filed today. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, and we undertake no obligation to revise or update this news release to reflect events or circumstances after the date hereof. CONTACT: Investors: Amicus Therapeutics Andrew Faughnan Vice President, Investor Relations afaughnan@amicusrx.com(609) 662-3809 Media: Amicus Therapeutics Diana Moore Head of Global Corporate Affairs and Communications dmoore@amicusrx.com(609) 662-5079 FOLD-G TABLE 1 Amicus Therapeutics, Inc.Consolidated Statements of Operations(Unaudited)(in thousands, except share and per share amounts) Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Net product sales$126,669 $94,503 $237,072 $180,773 Cost of goods sold 11,261 9,114 24,828 16,056 Gross profit 115,408 85,389 212,244 164,717 Operating expenses: Research and development 24,683 35,149 53,012 76,648 Selling, general, and administrative 73,576 65,423 161,605 139,380 Changes in fair value of contingent consideration payable — 337 — 588 Restructuring charges — — 6,045 — Loss on impairment of assets — 1,134 — 1,134 Depreciation and amortization 2,182 2,206 4,336 3,463 Total operating expenses 100,441 104,249 224,998 221,213 Income (loss) from operations 14,967 (18,860) (12,754) (56,496)Other expense: Interest income 1,370 1,737 2,910 3,936 Interest expense (12,512) (12,492) (24,948) (24,336)Other expense (3,717) (10,902) (8,683) (16,840)Income (loss) before income tax 108 (40,517) (43,475) (93,736)Income tax expense (15,805) (2,715) (20,641) (2,428)Net loss attributable to common stockholders$(15,697) $(43,232) $(64,116) $(96,164)Net loss attributable to common stockholders per common share — basic and diluted$(0.05) $(0.15) $(0.21) $(0.33)Weighted-average common shares outstanding — basic and diluted 303,773,922 292,797,002 303,336,787 292,071,201 TABLE 2 Amicus Therapeutics, Inc.Consolidated Balance Sheets(Unaudited)(in thousands, except share and per share amounts) June 30, 2024 December 31, 2023Assets Current assets: Cash and cash equivalents$209,335 $246,994 Investments in marketable securities 50,727 39,206 Accounts receivable 85,174 87,632 Inventories 81,320 59,696 Prepaid expenses and other current assets 35,145 49,533 Total current assets 461,701 483,061 Operating lease right-of-use assets, net 22,611 26,312 Property and equipment, less accumulated depreciation of $27,844 and $25,429 at June 30, 2024 and December 31, 2023, respectively 31,161 31,667 Intangible assets, less accumulated amortization of $4,147 and $2,510 at June 30, 2024 and December 31, 2023, respectively 18,853 20,490 Goodwill 197,797 197,797 Other non-current assets 17,361 18,553 Total Assets$749,484 $777,880 Liabilities and Stockholders’ Equity Current liabilities: Accounts payable$32,057 $15,120 Accrued expenses and other current liabilities 127,897 144,245 Operating lease liabilities 8,112 8,324 Total current liabilities 168,066 167,689 Long-term debt 388,939 387,858 Operating lease liabilities 47,007 48,877 Other non-current liabilities 12,949 13,282 Total liabilities 616,961 617,706 Commitments and contingencies Stockholders’ equity: Common stock, $0.01 par value, 500,000,000 shares authorized, 296,428,877 and 293,594,209 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively 2,923 2,918 Additional paid-in capital 2,868,925 2,836,018 Accumulated other comprehensive income (loss): Foreign currency translation adjustment 8,991 5,429 Unrealized loss on available-for-sale securities (197) (188)Warrants 71 71 Accumulated deficit (2,748,190) (2,684,074)Total stockholders’ equity 132,523 160,174 Total Liabilities and Stockholders’ Equity$749,484 $777,880 TABLE 3 Amicus Therapeutics, Inc.Reconciliation of Non-GAAP Financial Measures(in thousands)(Unaudited) Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Total operating expenses - as reported GAAP$ 100,441 $ 104,249 $ 224,998 $ 221,213 Research and development: Stock-based compensation 3,061 4,117 7,932 12,607 Selling, general and administrative: Stock-based compensation 13,136 12,460 39,068 38,864 Loss on impairment of assets — 1,134 — 1,134 Changes in fair value of contingent consideration payable — 337 — 588 Restructuring Charges — — 6,045 — Depreciation and amortization 2,182 2,206 4,336 3,463 Total operating expense adjustments to reported GAAP 18,379 20,254 57,381 56,656 Total operating expenses - as adjusted$82,062 $83,995 $167,617 $164,557 TABLE 4 Amicus Therapeutics, Inc.Reconciliation of Non-GAAP Financial Measures(in thousands, except share and per share amounts)(Unaudited) Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 GAAP net loss $(15,697) $(43,232) $(64,116) $(96,164)Share-based compensation 16,197 16,577 47,000 51,471 Changes in fair value of contingent consideration payable — 337 — 588 Depreciation and amortization 2,182 2,206 4,336 3,463 Loss on impairment of assets — 1,134 — 1,134 Restructuring charges — — 6,045 — Income tax expense 15,805 2,715 20,641 2,428 Non-GAAP net income (loss) $18,487 $(20,263) $13,906 $(37,080) Non-GAAP net income (loss) attributable to common stockholders per common share — basic and diluted $0.06 $(0.07) $0.05 $(0.13)Weighted-average common shares outstanding — basic and diluted 303,773,922 292,797,002 303,336,787 292,071,201

PRINCETON, N.J., June 04, 2024 (GLOBE NEWSWIRE) -- Amicus Therapeutics (Nasdaq: FOLD), a patient-dedicated global biotechnology company focused on developing and commercializing novel medicines for rare diseases, today announced that the Galien Foundation has awarded the 2024 Prix Galien U.K. Award for Best Pharmaceutical Product to Pombiliti® (cipaglucosidase alfa) + Opfolda® (miglustat). The prestigious Prix Galien is awarded to companies recognized for their outstanding advances in the discovery and development of innovative products that improve the overall human condition, and is regarded among the highest accolades for biopharmaceutical and medical technology research. “It is a great honor for Pombiliti + Opfolda to be awarded the prestigious Prix Galien U.K. Award for Best Pharmaceutical Product,” stated Bradley Campbell, President and Chief Executive Officer of Amicus Therapeutics, Inc. “We believe that this award embodies the dedication and continued success of our team at Amicus, together with patients, physicians and the broader Pompe community, to develop and deliver the first and only two-component therapy for eligible adults living with late-onset Pompe disease. This therapy is the realization of the hard work and efforts of so many individuals dedicated to the mission to make medicines that have a meaningful impact on the lives of people living with rare diseases like Pompe disease. We are grateful to the Galien Foundation for this very important recognition.” About the Galien FoundationThe Galien Foundation fosters, recognises and rewards excellence in scientific innovation to improve the state of human health. Our vision is to be the catalyst for the development of the next generation of innovative treatments and technologies that will impact the state of medical practice and save lives. The Foundation oversees and directs activities in the UK for the Prix Galien, an international awards programme dedicated to progress through innovative medicines development, with chapters in 14 countries, Africa and an inaugural chapter established in India in 2024. The Prix Galien was created in 1970 by Roland Mehl in honour of Galien, the father of medical science and modern pharmacology. Worldwide, the Prix Galien is regarded as the equivalent of the Nobel Prize in biopharmaceutical research. About Pombiliti + OpfoldaPombiliti + Opfolda, is a two-component therapy that consists of cipaglucosidase alfa, a bis-M6P-enriched rhGAA that facilitates high-affinity uptake through the M6P receptor while retaining its capacity for processing into the most active form of the enzyme, and the oral enzyme stabilizer, miglustat, that’s designed to reduce loss of enzyme activity in the blood. Important Safety InformationPombiliti (cipaglucosidase alfa) Important Safety InformationSummary of the safety profile: The most commonly reported adverse reactions only attributable to Pombiliti were chills (4.0%), dizziness (2.6%), flushing (2.0%), somnolence (2.0%), chest discomfort (1.3%), cough, (1.3%), infusion site swelling (1.3%), and pain (1.3%). Reported serious adverse reactions only attributable to Pombiliti were urticaria (2.0%), anaphylaxis (1.3%), pyrexia (0.7%), presyncope (0.7%), dyspnoea (0.7%), pharyngeal oedema (0.7%), wheezing (0.7%), and hypotension (0.7%). Refer to SmPC for full list. Contraindications: Life-threatening hypersensitivity to the active substance, or to any of the excipients. Contraindication to miglustat. Special warnings and precautions for use: Pombiliti must be used in combination with Opfolda 65 mg hard capsules. Anaphylaxis and infusion-associated reactions (IARs): Serious anaphylaxis and IARs have occurred in some patients during infusion and following infusion with Pombiliti. The risks and benefits of re-administering Pombiliti following anaphylaxis or severe allergic reaction should be carefully considered, and appropriate resuscitation measures made available. Risk of acute cardiorespiratory failure in susceptible patients: Patients with acute underlying respiratory illness or compromised cardiac and/or respiratory function may be at risk of serious exacerbation of their cardiac or respiratory compromise during infusions. Appropriate medical support and monitoring measures should be readily available during Pombiliti infusion. Immune complex-related reactions: Immune complex-related reactions have been reported with other ERTs in patients who had high IgG antibody titres, including severe cutaneous reactions and nephrotic syndrome. If immune complex-related reactions occur, discontinuation of the administration of Pombiliti should be considered and appropriate medical treatment should be initiated. The risks and benefits of re-administering Pombiliti following an immune complex-related reaction should be reconsidered for each individual patient. Opfolda (miglustat) 65 mg hard capsules Important Safety InformationSummary of the safety profile: The most commonly reported adverse reaction only attributable to Opfolda 65 mg was constipation (1.3%). Refer to SmPC for full list. Contraindications: Hypersensitivity to the active substance or to any of the excipients. Contraindication to cipaglucosidase alfa. Special warnings and precautions for use: Opfolda 65 mg hard capsules must be used in combination with Pombiliti. Food Interaction: Patients should fast for 2 hours before and 2 hours after taking Opfolda. About Pompe DiseasePompe disease is an inherited lysosomal disorder caused by deficiency of the enzyme acid alpha-glucosidase (GAA). Reduced or absent levels of GAA lead to accumulation of glycogen in cells, which is believed to result in the clinical manifestations of Pompe disease. Pompe disease ranges from a rapidly deteriorating infantile form with significant impact to heart function, to a late-onset form primarily affecting skeletal muscle and progressive respiratory involvement. Late-onset Pompe disease can be severe and debilitating with progressive muscle weakness throughout the body that worsens over time, particularly skeletal muscles and muscles controlling breathing. About Amicus Therapeutics Amicus Therapeutics (Nasdaq: FOLD) is a global, patient-dedicated biotechnology company focused on discovering, developing and delivering novel high-quality medicines for people living with rare diseases. With extraordinary patient focus, Amicus Therapeutics is committed to advancing and expanding a pipeline of cutting-edge, first- or best-in-class medicines for rare diseases. For more information, please visit the company’s website at www.amicusrx.com, and follow on X and LinkedIn. NP-AT-ALL-00020524 May 2024 CONTACT: Investors:Amicus TherapeuticsAndrew FaughnanVice President, Investor Relationsafaughnan@amicusrx.com(609) 662-3809 Media:Amicus TherapeuticsDiana MooreHead of Global Corporate Affairs and Communicationsdmoore@amicusrx.com(609) 662-5079 FOLD–G

1Q 2024 Total Revenue of $110.4M, a 28% Increase Year-over-Year Guiding to Full-Year 2024 Total Revenue Growth of 25%-30% at CER Raising Full-Year 2024 Galafold® Guidance on Continued Strong Demand Strong Pombiliti® + Opfolda® Launch with Increasing Rate of Commercial Patient Starts Reiterating Full-Year Non-GAAP Profitability Projected in 2024 Conference Call and Webcast Today at 8:30 a.m. ET PRINCETON, N.J., May 09, 2024 (GLOBE NEWSWIRE) -- Amicus Therapeutics (Nasdaq: FOLD), a patient-dedicated global biotechnology company focused on developing and commercializing novel medicines for rare diseases, today announced financial results for the first quarter ended March 31, 2024. “Amicus delivered a great start to the year across our global business,” said Bradley Campbell, President and Chief Executive Officer of Amicus Therapeutics, Inc. “In the first quarter, we continued to deliver excellent commercial performance. Once again, we have delivered mid-teen growth in global sales of Galafold, leading us to raise our product guidance for the year. We are also very pleased with the strong commercial launch of Pombiliti and Opfolda, which continues to build momentum with an increasing rate of commercial patient starts in the first months of the year. In 2024, we look to deliver significant total revenue growth of 25% to 30% coupled with continued expense management to deliver full year non-GAAP profitability. With these two therapies, we believe Amicus continues to make a profound difference in the lives of many individuals affected by rare diseases across the globe.” First Quarter 2024 Financial Highlights: Total revenue in the first quarter 2024 was $110.4 million, a year-over-year increase of 28% from total revenue of $86.3 million in the first quarter 2023. On a constant currency basis (CER)1, first-quarter 2024 total revenue growth was 28%. (in thousands)Three Months Ended March 31, Year-over-Year % Growth 2024 2023 Reported at CER1 Galafold® 99,359 86,112 15% 16% Pombiliti® + Opfolda® 11,044 158 n/a n/a Net Product Revenues $110,403 $86,270 28% 28% Galafold (migalastat) net product sales were $99.4 million in the first quarter 2024, a year-over-year increase of 15%, or 16% at constant exchange rates1.Pombiliti (cipaglucosidase alfa-atga) + Opfolda (miglustat) net product sales were $11.0 million in the first quarter 2024, a 30% increase from the fourth quarter of 2023. As of the end of April, over 155 patients are on treatment with commercial product or scheduled to be treated.Total GAAP operating expenses of $124.6 million for the first quarter 2024 increased by 6% as compared to $117.0 million for the first quarter 2023. Total non-GAAP operating expenses of $85.6 million for the first quarter 2024 increased by 6% as compared to $80.6 million for the first quarter 2023.GAAP net loss was $48.4 million, or $0.16 per share, for the first quarter 2024, and was reduced compared to a net loss of $52.9 million, or $0.18 per share, for the first quarter 2023. Non-GAAP net loss was $4.6 million, or $0.02 per share, for the first quarter 2024, and was reduced compared to a net loss of $16.8 million, or $0.06 per share, for first quarter 20232.Cash, cash equivalents, and marketable securities totaled $239.6 million at March 31, 2024, compared to $286.2 million at December 31, 2023. 2024 Financial Guidance: UpdatedPreviousTotal Revenue Growth125% to 30%n/aGalafold Revenue Growth113% to 17%11% to 16%Pombiliti + Opfolda Revenue1$62M to $67Mn/aNon-GAAP Operating Expense3$345M to $365M$345M to $365M Amicus is focused on the following key strategic priorities in 2024: Delivering double-digit Galafold revenue growthExecuting multiple successful launches of Pombiliti + OpfoldaAdvancing ongoing studies to support medical and scientific leadership in Fabry and Pompe diseasesAchieving full-year non-GAAP profitability4 1 At constant exchange rates (CER). In order to illustrate underlying performance, Amicus discusses its results in terms of constant exchange rate (CER) growth. This represents growth calculated as if the exchange rates had remained unchanged from those used in the comparative period. Full-year revenue guidance utilizes actual exchange rate as of December 31, 2023.2 Full reconciliation of GAAP results to the Company’s non-GAAP adjusted measures for the reporting period(s) appear in the tables to this press release.3 A reconciliation of the differences between the non-GAAP expectation and the corresponding GAAP measure is not available without unreasonable effort due to high variability, complexity, and low visibility as to the items that would be excluded from the GAAP measure.4 Based on projections of Amicus’ non-GAAP Net (Loss) Income under current operating plans, which includes successful Pombiliti + Opfolda launch and continued Galafold growth. Amicus defines non-GAAP Net (Loss) Income as GAAP Net (Loss) Income excluding the impact of share-based compensation expense, changes in fair value of contingent consideration, loss on impairment of assets, depreciation and amortization, acquisition-related income (Expense), loss on extinguishment of debt, restructuring charges and income taxes. Conference Call and WebcastAmicus Therapeutics will host a conference call and audio webcast today, May 9, 2024, at 8:30 a.m. ET to discuss the first quarter 2024 financial results and corporate updates. Participants and investors interested in accessing the call by phone will need to register using the online registration form. After registering, all phone participants will receive a dial-in number along with a PIN number to access the event. A live audio webcast and related presentation materials can also be accessed via the Investors section of the Amicus Therapeutics corporate website at ir.amicusrx.com. Web participants are encouraged to register on the website 15 minutes prior to the start of the call. An archived webcast and accompanying slides will be available on the Company's website shortly after the conclusion of the live event. About Galafold Galafold® (migalastat) 123 mg capsules is an oral pharmacological chaperone of alpha-Galactosidase A (alpha-Gal A) for the treatment of Fabry disease in adults who have amenable galactosidase alpha gene (GLA) variants. In these patients, Galafold works by stabilizing the body’s own dysfunctional enzyme so that it can clear the accumulation of disease substrate. Globally, Amicus Therapeutics estimates that approximately 35 to 50 percent of people living with Fabry disease may have amenable GLA variants, though amenability rates within this range vary by geography. Galafold is approved in more than 40 countries around the world, including the U.S., EU, U.K., and Japan. U.S. INDICATIONS AND USAGEGalafold is indicated for the treatment of adults with a confirmed diagnosis of Fabry disease and an amenable galactosidase alpha gene (GLA) variant based on in vitro assay data. This indication is approved under accelerated approval based on reduction in kidney interstitial capillary cell globotriaosylceramide (KIC GL-3) substrate. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials. U.S. IMPORTANT SAFETY INFORMATION ADVERSE REACTIONSThe most common adverse reactions reported with Galafold (≥10%) were headache, nasopharyngitis, urinary tract infection, nausea and pyrexia. USE IN SPECIFIC POPULATIONSThere is insufficient clinical data on Galafold use in pregnant women to inform a drug-associated risk for major birth defects and miscarriage. Advise women of the potential risk to a fetus. It is not known if Galafold is present in human milk. Therefore, the developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for Galafold and any potential adverse effects on the breastfed child from Galafold or from the underlying maternal condition. Galafold is not recommended for use in patients with severe renal impairment or end-stage renal disease requiring dialysis. The safety and effectiveness of Galafold have not been established in pediatric patients. To report Suspected Adverse Reactions, contact Amicus Therapeutics at 1-877-4AMICUS or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. For additional information about Galafold, including the full U.S. Prescribing Information, please visit https://www.amicusrx.com/pi/Galafold.pdf. About Pombiliti + OpfoldaPombiliti + Opfolda, is a two-component therapy that consists of cipaglucosidase alfa-atga, a bis-M6P-enriched rhGAA that facilitates high-affinity uptake through the M6P receptor while retaining its capacity for processing into the most active form of the enzyme, and the oral enzyme stabilizer, miglustat, that’s designed to reduce loss of enzyme activity in the blood. U.S. INDICATIONS AND USAGEPOMBILITI in combination with OPFOLDA is indicated for the treatment of adult patients with late-onset Pompe disease (lysosomal acid alpha-glucosidase [GAA] deficiency) weighing ≥40 kg and who are not improving on their current enzyme replacement therapy (ERT). SAFETY INFORMATION HYPERSENSITIVITY REACTIONS INCLUDING ANAPHYLAXIS: Appropriate medical support measures, including cardiopulmonary resuscitation equipment, should be readily available. If a severe hypersensitivity reaction occurs, POMBILITI should be discontinued immediately and appropriate medical treatment should be initiated. INFUSION-ASSOCIATED REACTIONS (IARs): If severe IARs occur, immediately discontinue POMBILITI and initiate appropriate medical treatment. RISK OF ACUTE CARDIORESPIRATORY FAILURE IN SUSCEPTIBLE PATIENTS: Patients susceptible to fluid volume overload, or those with acute underlying respiratory illness or compromised cardiac or respiratory function, may be at risk of serious exacerbation of their cardiac or respiratory status during POMBILITI infusion. See PI for complete Boxed Warning. CONTRAINDICATION: POMBILITI in combination with Opfolda is contraindicated in pregnancy. EMBRYO-FETAL TOXICITY: May cause embryo-fetal harm. Advise females of reproductive potential of the potential risk to a fetus and to use effective contraception during treatment and for at least 60 days after the last dose. Adverse Reactions: Most common adverse reactions ≥ 5% are headache, diarrhea, fatigue, nausea, abdominal pain, and pyrexia. Please see full PRESCRIBING INFORMATION, including BOXED WARNING, for POMBILITI (cipaglucosidase alfa-atga) LINK and full PRESCRIBING INFORMATION for OPFOLDA (miglustat) LINK. About Amicus Therapeutics Amicus Therapeutics (Nasdaq: FOLD) is a global, patient-dedicated biotechnology company focused on discovering, developing and delivering novel high-quality medicines for people living with rare diseases. With extraordinary patient focus, Amicus Therapeutics is committed to advancing and expanding a pipeline of cutting-edge, first- or best-in-class medicines for rare diseases. For more information, please visit the company’s website at www.amicusrx.com, and follow on X and LinkedIn. Non-GAAP Financial Measures In addition to financial information prepared in accordance with U.S. GAAP, this press release also contains adjusted financial measures that we believe provide investors and management with supplemental information relating to operating performance and trends that facilitate comparisons between periods and with respect to projected information. These adjusted financial measures are non-GAAP measures and should be considered in addition to, but not as a substitute for, the information prepared in accordance with U.S. GAAP. We use these non-GAAP measures as key performance measures for the purpose of evaluating operational performance and cash requirements internally. We typically exclude certain GAAP items that management does not believe affect our basic operations and that do not meet the GAAP definition of unusual or non-recurring items. Other companies may define these measures in different ways. When we provide our expectation for non-GAAP operating expenses and profitability on a forward-looking basis, a reconciliation of the differences between the non-GAAP expectation and the corresponding GAAP measure generally is not available without unreasonable effort due to potentially high variability, complexity and low visibility as to the items that would be excluded from the GAAP measure in the relevant future period, such as unusual gains or losses. The variability of the excluded items may have a significant, and potentially unpredictable, impact on our future GAAP results. Forward Looking StatementThis press release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 relating to preclinical and clinical development of our product candidates, the timing and reporting of results from preclinical studies and clinical trials, the prospects and timing of the potential regulatory approval of our product candidates, commercialization plans, manufacturing and supply plans, financing plans, and the projected revenues and cash position for the Company. The inclusion of forward-looking statements should not be regarded as a representation by us that any of our plans will be achieved. Any or all of the forward-looking statements in this press release may turn out to be wrong and can be affected by inaccurate assumptions we might make or by known or unknown risks and uncertainties. For example, with respect to statements regarding the goals, progress, timing, and outcomes of discussions with regulatory authorities and pricing and reimbursement authorities, are based on current information. Actual results may differ materially from those set forth in this release due to the risks and uncertainties inherent in our business, including, without limitation: the potential that results of clinical or preclinical studies indicate that the product candidates are unsafe or ineffective; the potential that it may be difficult to enroll patients in our clinical trials; the potential that regulatory authorities may not grant or may delay approval for our product candidates; the potential that required regulatory inspections may be delayed or not be successful and delay or prevent product approval; the potential that we may not be successful in negotiations with pricing and reimbursement authorities; the potential that we may not be successful in commercializing Galafold and/or Pombiliti and Opfolda in Europe, the UK, the US and other geographies; the potential that preclinical and clinical studies could be delayed because we identify serious side effects or other safety issues; the potential that we may not be able to manufacture or supply sufficient clinical or commercial products; and the potential that we will need additional funding to complete all of our studies, the manufacturing, and commercialization of our products. With respect to statements regarding corporate financial guidance and financial goals and the expected attainment of such goals and projections of the Company's revenue, non-GAAP profitability and cash position, actual results may differ based on market factors and the Company's ability to execute its operational and budget plans. In addition, all forward-looking statements are subject to other risks detailed in our Annual Report on Form 10-K for the year ended December 31, 2023, and on Form 10-Q for the quarter ended March 31, 2024, to be filed today. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, and we undertake no obligation to revise or update this news release to reflect events or circumstances after the date hereof. CONTACT: Investors: Amicus Therapeutics Andrew FaughnanVice President, Investor Relationsafaughnan@amicusrx.com(609) 662-3809 Media: Amicus Therapeutics Diana Moore Head of Global Corporate Affairs and Communicationsdmoore@amicusrx.com(609) 662-5079 FOLD-G TABLE 1 Amicus Therapeutics, Inc.Consolidated Statements of Operations(Unaudited)(in thousands, except share and per share amounts) Three Months Ended March 31, 2024 2023 Net product sales$110,403 $86,270 Cost of goods sold 13,567 6,942 Gross profit 96,836 79,328 Operating expenses: Research and development 28,329 41,499 Selling, general, and administrative 88,029 73,957 Changes in fair value of contingent consideration payable — 251 Restructuring charges 6,045 — Depreciation and amortization 2,154 1,257 Total operating expenses 124,557 116,964 Loss from operations (27,721) (37,636)Other expense: Interest income 1,540 2,199 Interest expense (12,436) (11,844)Other expense (4,966) (5,938)Loss before income tax (43,583) (53,219)Income tax (expense) benefit (4,836) 287 Net loss attributable to common stockholders$(48,419) $(52,932)Net loss attributable to common stockholders per common share — basic and diluted$(0.16) $(0.18)Weighted-average common shares outstanding — basic and diluted 302,903,009 291,336,750 TABLE 2 Amicus Therapeutics, Inc.Consolidated Balance Sheets(Unaudited)(in thousands, except share and per share amounts) March 31, 2024 December 31, 2023Assets Current assets: Cash and cash equivalents$209,761 $246,994 Investments in marketable securities 29,842 39,206 Accounts receivable 76,433 87,632 Inventories 60,759 59,696 Prepaid expenses and other current assets 54,444 49,533 Total current assets 431,239 483,061 Operating lease right-of-use assets, net 23,003 26,312 Property and equipment, less accumulated depreciation of $26,563 and $25,429 at March 31, 2024 and December 31, 2023, respectively 32,421 31,667 Intangible assets, less accumulated amortization of $3,328 and $2,510 at March 31, 2024 and December 31, 2023, respectively 19,672 20,490 Goodwill 197,797 197,797 Other non-current assets 17,657 18,553 Total Assets$721,789 $777,880 Liabilities and Stockholders’ Equity Current liabilities: Accounts payable$9,210 $15,120 Accrued expenses and other current liabilities 124,622 144,245 Operating lease liabilities 8,270 8,324 Total current liabilities 142,102 167,689 Long-term debt 388,391 387,858 Operating lease liabilities 47,831 48,877 Other non-current liabilities 12,771 13,282 Total liabilities 591,095 617,706 Commitments and contingencies Stockholders’ equity: Common stock, $0.01 par value, 500,000,000 shares authorized, 296,159,417 and 293,594,209 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively 2,922 2,918 Additional paid-in capital 2,853,550 2,836,018 Accumulated other comprehensive loss: Foreign currency translation adjustment 6,847 5,429 Unrealized loss on available-for-sale securities (203) (188)Warrants 71 71 Accumulated deficit (2,732,493) (2,684,074)Total stockholders’ equity 130,694 160,174 Total Liabilities and Stockholders’ Equity$721,789 $777,880 TABLE 3 Amicus Therapeutics, Inc.Reconciliation of Non-GAAP Financial Measures(in thousands)(Unaudited) Three Months Ended March 31, 2024 2023Total operating expenses - as reported GAAP $ 124,557 $ 116,964Research and development: Stock-based compensation 4,871 8,490Selling, general and administrative: Stock-based compensation 25,932 26,404Restructuring charges 6,045 —Changes in fair value of contingent consideration payable — 251Depreciation and amortization 2,154 1,257Total operating expense adjustments to reported GAAP 39,002 36,402Total operating expenses - as adjusted $85,555 $80,562 TABLE 4 Amicus Therapeutics, Inc.Reconciliation of Non-GAAP Financial Measures(in thousands, except share and per share amounts)(Unaudited) Three Months Ended March 31, 2024 2023 GAAP net loss $(48,419) $(52,932)Share-based compensation 30,803 34,894 Changes in fair value of contingent consideration payable — 251 Depreciation and amortization 2,154 1,257 Restructuring charges 6,045 — Income tax expense (benefit) 4,836 (287)Non-GAAP net loss $(4,581) $(16,817) Non-GAAP net loss attributable to common stockholders per common share — basic and diluted $(0.02) $(0.06)Weighted-average common shares outstanding — basic and diluted 302,903,009 291,336,750