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Alkermes

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FY2024 Annual Report · Alkermes
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form 10-K
	
(Mark One)
☒
 
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
for the fiscal year ended December 31, 2024
OR
☐
 
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: 001-35299
ALKERMES PUBLIC LIMITED COMPANY
(Exact name of registrant as specified in its charter)
 
 
 
 
Ireland
(State or other jurisdiction of incorporation or organization)
 
98-1007018
(I.R.S. Employer Identification No.)
Connaught House
1 Burlington Road
Dublin 4, Ireland

(Address of principal executive offices)
 
D04 C5Y6
(Zip code)
 
 
+353-1-772-8000
(Registrant’s telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
 
Title of each class
 
Trading Symbol(s)
 
Name of each exchange on which registered
Ordinary shares, $0.01 par value
 
ALKS
 
Nasdaq Global Select Market
 
Securities registered pursuant to Section 12(g) of the Act: None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☒  No ☐
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes ☐  No ☒
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 
12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒  No ☐
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 
232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒  No ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth 
company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
 
Large Accelerated Filer ☒
 
                  Accelerated Filer ☐
Non-Accelerated Filer ☐
 
Smaller Reporting Company ☐
 
 
Emerging Growth Company ☐
 
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial 
accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ 
Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial 
reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒
If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the 
correction of an error to previously issued financial statements.  ☐
Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the 
registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b).  ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ☐  No ☒
The aggregate market value of the registrant’s ordinary shares held by non-affiliates of the registrant (without admitting that any person whose shares are not included in such 
calculation is an affiliate) computed by reference to the price at which the ordinary shares were last sold as of the last business day of the registrant’s most recently completed second 
fiscal quarter was $3,943,314,276.
As of February 7, 2025, 162,614,067 ordinary shares were outstanding. 
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the definitive proxy statement for our 2025 Annual General Meeting of Shareholders are incorporated by reference into Part III of this report.
 

 
2
ALKERMES PLC AND
SUBSIDIARIES
ANNUAL REPORT ON FORM 10-K
FOR THE YEAR ENDED DECEMBER 31, 2024
INDEX
 
 
  
 
 
 
 
 
 
 
PART I
    
    
    
 
Item 1.
 
Business
 
6
Item 1A.
 
Risk Factors
 
30
Item 1B.
 
Unresolved Staff Comments
 
51
Item 1C.
 
Cybersecurity
 
51
Item 2.
 
Properties
 
52
Item 3.
 
Legal Proceedings
 
52
Item 4.
 
Mine Safety Disclosures
 
52
PART II
 
 
 
 
Item 5.
 
Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
 
53
Item 6.
 
[Reserved]
 
55
Item 7.
 
Management’s Discussion and Analysis of Financial Condition and Results of Operations
 
56
Item 7A.
 
Quantitative and Qualitative Disclosures about Market Risk
 
66
Item 8.
 
Financial Statements and Supplementary Data
 
67
Item 9.
 
Changes in and Disagreements with Accountants on Accounting and Financial Disclosures
 
68
Item 9A.
 
Controls and Procedures
 
68
Item 9B.
 
Other Information
 
69
Item 9C.
 
Disclosure Regarding Foreign Jurisdictions that Prevent Inspections
 
69
PART III
 
 
 
 
Item 10.
 
Directors, Executive Officers and Corporate Governance
 
70
Item 11.
 
Executive Compensation
 
70
Item 12.
 
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
 
70
Item 13.
 
Certain Relationships and Related Transactions, and Director Independence
 
70
Item 14.
 
Principal Accounting Fees and Services
 
70
PART IV
 
 
 
 
Item 15.
 
Exhibits and Financial Statement Schedules
 
71
Item 16. 
 
Form 10-K Summary
 
77
SIGNATURES
 
78
 
 
 
 

 
3
CAUTIONARY NOTE CONCERNING FORWARD-LOOKING STATEMENTS
This document contains and incorporates by reference “forward-looking statements” within the meaning of Section 27A of the Securities Act of 
1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). In some cases, these 
statements can be identified by the use of forward-looking terminology such as “may,” “will,” “could,” “should,” “would,” “expect,” “anticipate,” 
“continue,” “believe,” “plan,” “estimate,” “intend,” or other similar words. These statements discuss future expectations and contain projections of results 
of operations or of financial condition, or state trends and known uncertainties or other forward-looking information. Forward-looking statements in this 
Annual Report on Form 10-K (this “Annual Report”) may include, without limitation, statements regarding:
•
our expectations regarding our financial performance, including revenues, expenses, liquidity, capital expenditures, income taxes and 
profitability;
•
our expectations regarding our products, including expectations related to product development, regulatory filings, approvals and timelines; 
therapeutic and commercial value, scope and potential; and the costs and expenses related to such activities and expectations;
•
our expectations regarding the initiation, timing and results of clinical trials of our products; 
•
our expectations regarding the competitive, payer, legislative, regulatory and policy landscape, and changes therein, related to our products, 
including competition from generic forms of our products or competitive products and development programs; barriers to access or coverage of 
our products and potential changes in reimbursement of our products; and legislation, regulations, executive orders, guidance or other measures 
that may impact pricing and reimbursement of, and access to, our products;
•
our expectations regarding the financial impact of currency exchange rate fluctuations and valuations;
•
our expectations regarding acquisitions, collaborations, licensing arrangements and other significant agreements with third parties, including 
those related to our products, development programs, and other business development opportunities; 
•
our expectations regarding the impacts of new legislation, rules and regulations, the adoption of new accounting pronouncements, potential 
government shutdowns, or other global, political or economic changes, instability or disruptions;
•
our expectations regarding near-term changes in the nature of our market risk exposures or in our management’s objectives and strategies with 
respect to managing such exposures;
•
our expectations regarding future capital requirements and expenditures for our operations and our ability to finance such capital requirements 
and expenditures;
•
our expectations regarding the timing, outcome and impact of administrative, regulatory, legal and other proceedings related to our products and 
intellectual property (“IP”), including our patents, know-how, and related rights or obligations; 
•
our expectations regarding the tax treatment and other anticipated benefits of the completed separation of our oncology business; and
•
other expectations discussed elsewhere in this Annual Report.
Actual results might differ materially from those expressed or implied by these forward-looking statements because these forward-looking 
statements are subject to risks, assumptions and uncertainties. In light of these risks, assumptions and uncertainties, the forward-looking expectations 
discussed in this Annual Report might not occur. You are cautioned not to place undue reliance on the forward-looking statements in this Annual Report, 
which speak only as of the date of this Annual Report. All subsequent written and oral forward-looking statements concerning the matters addressed in this 
Annual Report and attributable to us or any person acting on our behalf are expressly qualified in their entirety by the cautionary statements contained or 
referred to in this section. Except as required by applicable law or regulation, we do not undertake any obligation to update publicly or revise any forward-
looking statements, whether as a result of new information, future events or otherwise. For information about the risks, assumptions and uncertainties of 
our business, see “Item 1A—Risk Factors” in this Annual Report.
This Annual Report may include data that we obtained from industry publications and third-party research, surveys and studies. Industry 
publications and third-party research, surveys and studies generally indicate that their information has been obtained from sources believed to be reliable, 
although they do not guarantee the accuracy or completeness of such information. While we believe that any industry publications and third-party research, 
surveys and studies from which data is included in this Annual Report are reliable, we have not independently verified any such data. This Annual Report 
may also include data based on our own internal estimates and research. Our internal estimates and research have not been verified by any independent 
source and are necessarily subject to a high degree of uncertainty and risk due to a variety of factors, including those described in “Item 1A—Risk Factors” 
in this Annual Report. These and other factors could cause our results to differ materially from those expressed or implied in this Annual Report.
 

 
4
SUMMARY OF MATERIAL RISKS ASSOCIATED WITH OUR BUSINESS
Our business is subject to numerous material and other risks and uncertainties that you should be aware of. These risks and uncertainties are 
described more fully in “Item 1A—Risk Factors” in this Annual Report, and include, but are not limited to, the following:
•
we receive substantial revenue from our key proprietary products, and our success depends on our ability to successfully manufacture and 
commercialize such products;
•
we face competition in the biopharmaceutical industry; 
•
our revenues from sales of our products may decrease or grow at a slower than expected rate due to many factors;
•
revenues generated by sales of our products depend, in part, on the availability from third-party payers of reimbursement for our products and the 
extent of cost-sharing arrangements for patients (e.g., patient co-payment, co-insurance, deductible obligations) and cost-control measures 
imposed, and any reductions in payment rate or reimbursement or increases in our or in patients’ financial obligation to payers could result in 
decreased sales of our products and/or decreased revenues;
•
if there are changes in, or we fail to comply with, the extensive legal and regulatory requirements affecting the healthcare industry, we could be 
subject to investigations, litigation, costs, penalties and business losses;
•
we rely heavily on our licensees in the commercialization and continued development of products from which we receive revenue and, if our 
licensees are not effective, or if disputes arise in respect of our contractual arrangements, our revenues could be materially adversely affected;
•
clinical trials for our product candidates are expensive, may take several years to complete, and their outcomes are uncertain;
•
preliminary, topline or interim data from our clinical trials that we may announce, publish or report from time to time may change as more 
patient data become available or based on subsequent audit and verification procedures, and may not be indicative of final data from such trials, 
data from future trials or real-world results;
•
our success depends, in part, on our ability to successfully obtain and maintain regulatory approval for our products;
•
disruptions at the United States (“U.S.”) Food and Drug Administration (the “FDA”), the U.S. Securities and Exchange Commission (“SEC”) 
and other government agencies could negatively impact our business;
•
we may not be able to successfully expand our research and development (“R&D”) pipeline or our commercial product portfolio, which could 
limit our growth potential;
•
we are subject to risks related to the manufacture of our products;
•
we rely on third parties to provide goods and services in connection with the manufacture and distribution of the products we manufacture;
•
our success largely depends upon our ability to attract, recognize and retain key personnel, and the loss of key personnel may materially and 
adversely impact our business;
•
patent and other IP protection for our products is key to our business and our competitive position but is uncertain;
•
uncertainty over IP in the biopharmaceutical industry has been the source of litigation and other legal proceedings, and we or our licensees may 
face claims against IP rights covering our products and competition from generic drug manufacturers;
•
litigation or arbitration filed against us, including securities litigation, or actions (such as citizens petitions) filed against regulatory agencies in 
respect of our products, may result in financial losses, harm our reputation, divert management resources, negatively impact the approval of our 
products, or otherwise negatively impact our business;
•
we may not be able to maintain profitability on a sustained basis;
•
the U.S. Internal Revenue Service (“IRS”) may not agree with our conclusion that we should be treated as a foreign corporation for U.S. federal 
income tax purposes;
•
if the separation of our oncology business completed in November 2023 does not ultimately qualify as a transaction that is generally tax-free for 
U.S. federal and Irish tax purposes as we anticipate, we and/or our shareholders could be subject to significant tax liabilities; 

 
5
•
the market price of our ordinary shares has been volatile and may continue to be volatile in the future, and could decline significantly;
•
our business could be negatively affected as a result of the actions of activist shareholders; and
•
information security breaches and other disruptions could compromise our information and expose us to liability, which could cause our business 
and reputation to suffer. 
The material and other risks and uncertainties summarized above should be read together with the text of the full risk factors in “Item 1A—Risk 
Factors” in this Annual Report and the other information set forth in this Annual Report, including our consolidated financial statements and the related 
notes, and in other documents that we file with the SEC. If any such material or other risks and uncertainties actually occur, our business, financial 
condition, cash flows or results of operations could be materially and adversely affected. The risks and uncertainties summarized above or described below 
are not the only risks and uncertainties that we face. Additional risks and uncertainties not currently known to us, or that we currently deem to be 
immaterial may also materially adversely affect our business, financial condition, cash flows or results of operations.
NOTE REGARDING COMPANY AND PRODUCT REFERENCES
Use of terms such as “us,” “we,” “our,” “Alkermes” or the “Company” in this Annual Report is meant to refer to Alkermes plc and its consolidated 
subsidiaries. Except as otherwise suggested by the context, (a) references to “products” or “our products” in this Annual Report include our marketed 
products, marketed products using our proprietary technologies, our licensed products, our product candidates and product candidates using our proprietary 
technologies, (b) references to the “biopharmaceutical industry” in this Annual Report are intended to include reference to the “biotechnology industry” 
and/or the “pharmaceutical industry” and (c) references to “licensees” in this Annual Report are used interchangeably with references to “partners.”
NOTE REGARDING TRADEMARKS
We are the owner of various U.S. federal trademark registrations (“®”) and other trademarks (“TM”), including ALKERMES®, ARISTADA®, 
ARISTADA INITIO®, LinkeRx®, LYBALVI®, NanoCrystal®, and VIVITROL®.
The following are trademarks of the respective companies listed: ABILIFY®, ABILIFY ASIMTUFII® and ABILIFY MAINTENA®—Otsuka 
Pharmaceutical Co., Ltd. (“Otsuka Pharm. Co.”); AMPYRA®—Acorda Therapeutics, Inc. (“Acorda”); ANJESO®—Baudax Bio, Inc.; ANTABUSE®—
Teva Women’s Health, Inc.; AUBAGIO® and LEMTRADA®—Sanofi Societe Anonyme France; AVONEX®, PLEGRIDY®, TECFIDERA®, TYSABRI® 
and VUMERITY®—Biogen MA Inc. (together with its affiliates, “Biogen”); BETASERON®—Bayer Pharma AG; BRIXADI®—Braeburn Inc.; 
BRIUMVI®—TG Therapeutics, Inc.; BUNAVAILTM—BioDelivery Sciences; CAMPRAL®—Merck Sante; CAPLYTA®—Intra-Cellular Therapies, Inc.; 
COPAXONE® and UZEDY®—Teva Pharmaceutical Industries Ltd. (together with its affiliates, “Teva”) ; EXTAVIA®, GILENYA®, and MAYZENT®—
Novartis AG; BYANNLI®, CABENUVA®, INVEGA®, INVEGA HAFYERA®, INVEGA SUSTENNA®, INVEGA TRINZA®, PONVORY®, 
RISPERDAL CONSTA®, TREVICTA® and XEPLION®—Johnson & Johnson or its affiliated companies; FAMPYRATM—Merz Pharmaceuticals, LLC; 
MAVENCLAD®—Merck KGaA, REBIF®—Ares Trading S.A.; OCREVUS®—Genentech, Inc. (“Genentech”); REXULTI®—H. Lundbeck A/S plc; 
PERSERIS®, SUBOXONE®, SUBUTEX® and SUBLOCADE®—Indivior plc (or its affiliates); RYKINDO®—Luye Pharma Group; VRAYLAR®— Forest 
Laboratories, LLC; COBENFY® and ZEPOSIA®—Bristol-Myers Squibb Company; ZUBSOLV®—Orexo US, Inc.; and ZYPREXA® and ZYPREXA 
RELPREVV®—Eli Lilly and Company (“Lilly”). Other trademarks, trade names and service marks appearing in this Annual Report are the property of 
their respective owners. Solely for convenience, the trademarks and trade names in this Annual Report are referred to without the ® or ™ symbols, but such 
references should not be construed as any indicator that their respective owners will not assert, to the fullest extent under applicable law, their rights 
thereto.

 
6
PART I
Item 1.	 Business
The following discussion contains forward-looking statements. Actual results may differ significantly from those expressed or implied in the 
forward-looking statements. See “Cautionary Note Concerning Forward-Looking Statements” on page 3 of this Annual Report. Factors that might cause 
future results to differ materially from those expressed or implied in the forward-looking statements include, but are not limited to, those discussed in “Item 
1A—Risk Factors” and elsewhere in this Annual Report.
Overview
Alkermes plc is a global biopharmaceutical company that seeks to develop innovative medicines in the field of neuroscience. We have a portfolio of 
proprietary commercial products for the treatment of alcohol dependence, opioid dependence, schizophrenia and bipolar I disorder, and a pipeline of 
clinical and preclinical candidates in development for neurological disorders, including narcolepsy and idiopathic hypersomnia. Headquartered in Ireland, 
we also have a corporate office and R&D center in Massachusetts and a manufacturing facility in Ohio.
Marketed Products
The key marketed products discussed below have generated, or are expected to generate, significant revenues for us. See the section entitled 
“Patents and Proprietary Rights” in “Item 1—Business” in this Annual Report for information with respect to the IP protection for these marketed 
products. 
The following provides summary information regarding our proprietary products that we commercialize:
Proprietary Products
 
 
 
 
 
 
 
Product
 
Indication(s)
   
Territory
 
 
 
   
 
  Initiation or re-initiation of 
ARISTADA for the treatment of 
Schizophrenia
   
U.S.
  Schizophrenia
   
U.S.

 
7
 
 
 
   
 
 
 
 
   
 
  Schizophrenia;
Bipolar I disorder 
 
   
U.S.
 
 
 
   
 
 
 
 
   
 
  Alcohol dependence;
Opioid dependence
   
U.S.

 
8
The following provides summary information regarding certain key third-party products using our proprietary technologies under license and our 
key licensed product, that are commercialized by our licensees:
 
Key Third-Party Products Using Our Proprietary Technologies
 
 
 
 
 
 
 
 
Product
 
Indication(s)
 
Licensee
 
Licensed Territory
 
 
 
 
 
 
 
RISPERDAL CONSTA
  Schizophrenia; 
Bipolar I disorder
  Janssen
Pharmaceuticals, Inc. and 
Janssen Pharmaceutica 
International, a division of 
Cilag International AG 
(“Janssen International”)
 
  Worldwide
INVEGA SUSTENNA / XEPLION
  INVEGA SUSTENNA:
Schizophrenia; 
Schizoaffective disorder
 
XEPLION:
Schizophrenia
 
  Janssen Pharmaceutica N.V. 
(together with Janssen 
Pharmaceuticals, Inc., 
Janssen International and 
their affiliates “Janssen”)
 
  Worldwide
 
 
INVEGA TRINZA / TREVICTA
  Schizophrenia
  Janssen
  Worldwide
 
INVEGA HAFYERA / BYANNLI
  Schizophrenia
  Janssen
  Worldwide
 
 
Our Key Licensed Product
 
Product
 
Indication(s)
 
Licensee
 
Licensed Territory
 
 
 
 
 
 
 
VUMERITY
  Multiple sclerosis
  Biogen
  Worldwide
Proprietary Products
We have developed and now commercialize products designed to help address the unmet needs of people living with opioid dependence, alcohol 
dependence, schizophrenia and bipolar I disorder. See the section entitled “Patents and Proprietary Rights” in “Item 1—Business” in this Annual Report 
for information with respect to the IP protection for our proprietary products.
ARISTADA and ARISTADA INITIO
ARISTADA (aripiprazole lauroxil) is an extended-release intramuscular injectable suspension approved in the U.S. for the treatment of 
schizophrenia. ARISTADA utilizes our proprietary LinkeRx technology. ARISTADA is a prodrug; once in the body, ARISTADA is likely converted by 
enzyme-mediated hydrolysis to N-hydroxymethyl aripiprazole, which is then hydrolyzed to aripiprazole. ARISTADA is available in four dose strengths 
with once-monthly dosing options (441 mg, 662 mg and 882 mg), a six-week dosing option (882 mg) and a two-month dosing option (1064 mg). 
ARISTADA is packaged in a ready-to-use, pre-filled syringe product format. We exclusively manufacture and commercialize ARISTADA in the U.S.
ARISTADA INITIO (aripiprazole lauroxil) leverages our proprietary LinkeRx and NanoCrystal technologies and provides an extended-release 
formulation of aripiprazole lauroxil in a smaller particle size compared to ARISTADA, thereby enabling faster dissolution and more rapid achievement of 
relevant levels of aripiprazole in the body. ARISTADA INITIO, combined with a single 30 mg dose of oral aripiprazole, is indicated for the initiation of 
ARISTADA when used for the treatment of schizophrenia in adults. The first ARISTADA dose may be administered on the same day as the ARISTADA 
INITIO regimen or up to 10 days thereafter. We exclusively manufacture and commercialize ARISTADA INITIO in the U.S.

 
9
In December 2024, U.S. Patent No. 12,180,164 relating to ARISTADA and ARISTADA INITIO was granted. The patent has claims to the 
metabolite N-hydroxymethyl aripiprazole and expires in 2030.
What is schizophrenia?
Schizophrenia is a serious brain disorder marked by positive symptoms (hallucinations and delusions, disorganized speech and thoughts, and 
agitated or repeated movements) and negative symptoms (depression, blunted emotions and social withdrawal). Schizophrenia affects approximately 1.1% 
of the U.S. population.
LYBALVI 
LYBALVI (olanzapine and samidorphan) is a once-daily, oral atypical antipsychotic drug approved in the U.S. for the treatment of adults with 
schizophrenia and for the treatment of adults with bipolar I disorder, as a maintenance monotherapy or for the acute treatment of manic or mixed episodes, 
as monotherapy or an adjunct to lithium or valproate. LYBALVI is a combination of olanzapine, an atypical antipsychotic, and samidorphan, an opioid 
antagonist, in a single bilayer tablet. LYBALVI is available in fixed dosage strengths composed of 10 mg of samidorphan and 5 mg, 10 mg, 15 mg or 20 
mg of olanzapine. We exclusively manufacture and commercialize LYBALVI in the U.S.
In January 2025, U.S. Patent No. 12,194,035 relating to LYBALVI was granted. The patent has claims to methods of treatment that cover 
LYBALVI and expires in 2031.
What is schizophrenia?
See the disease state description in the section entitled “ARISTADA and ARISTADA INITIO” in “Item 1—Business” in this Annual Report.
What is bipolar I disorder?
Bipolar disorder is a brain disorder that is marked by extreme changes in a person’s mood, energy and ability to function. Individuals with this brain 
disorder may experience debilitating mood states, including extreme highs (mania) and extreme lows (depression). Bipolar I disorder is characterized by 
the occurrence of at least one manic episode, with or without the occurrence of a major depressive episode, and affects approximately 1% of the adult 
population in the U.S. in any given year.
VIVITROL 
VIVITROL (naltrexone for extended-release injectable suspension) is a once-monthly, non-narcotic, injectable medication approved in the U.S. for 
the treatment of alcohol dependence in patients able to abstain from alcohol in an outpatient setting prior to initiation of treatment with VIVITROL and for 
the prevention of relapse to opioid dependence, following opioid detoxification. VIVITROL uses our polymer-based microsphere injectable extended-
release technology to deliver and maintain therapeutic medication levels in the body through one intramuscular injection every four weeks. We exclusively 
manufacture and commercialize VIVITROL in the U.S.
What are opioid dependence and alcohol dependence?
Opioid dependence is a serious and chronic brain disease characterized by compulsive, prolonged self-administration of opioid substances that are 
not used for a medical purpose. According to the 2023 U.S. National Survey on Drug Use and Health, an estimated 5.4 million people aged 18 or older in 
the U.S. had an opioid use disorder* in the prior year. Alcohol dependence is a serious and chronic brain disease characterized by cravings for alcohol, loss 
of control over drinking, withdrawal symptoms and an increased tolerance for alcohol. According to the 2023 U.S. National Survey on Drug Use and 
Health, an estimated 28.1 million people aged 18 or older in the U.S. had an alcohol use disorder* in the prior year. Adherence to medication is particularly 
challenging with these disease states.
 
*
In 2013, with the publication of the Diagnostic Statistical Manual (“DSM”) 5, the DSM-IV diagnoses of substance use disorders as either dependence or abuse (i.e., opioid 
dependence or alcohol dependence), which reflects the approved indications of VIVITROL, were subsumed under a new diagnostic category of “substance use disorders” (i.e., 
opioid use disorder or alcohol use disorder) with three categories of disorder severity—mild, moderate or severe. In determining the applicability of treatments for DSM-IV 
conditions to persons diagnosed according to DSM-5, one study found agreement between the DSM-IV diagnoses of alcohol dependence and opioid dependence and moderate to 
severe alcohol use disorder and opioid use disorder, respectively, under DSM-5.
 

 
10
Licensed Products and Products Using Our Proprietary Technologies
We have licensed products to third parties for commercialization and have licensed our proprietary technologies to third parties to enable them to 
develop, commercialize and/or manufacture products. See the section entitled “Proprietary Technology Platforms” and “Patents and Proprietary Rights” in 
“Item 1—Business” in this Annual Report for information with respect to our proprietary technologies and the IP protection for these products. We receive 
royalties and/or manufacturing and other revenues from the commercialization of these products under our collaborative arrangements with these third 
parties. Such arrangements include, among others, the following:
Products Using Our Proprietary Technologies
INVEGA SUSTENNA/XEPLION, INVEGA TRINZA/TREVICTA and INVEGA HAFYERA/BYANNLI 
 INVEGA SUSTENNA/XEPLION (paliperidone palmitate), INVEGA TRINZA/TREVICTA (paliperidone palmitate) and INVEGA 
HAFYERA/BYANNLI (paliperidone palmitate) (collectively, the “long-acting INVEGA products”) are long-acting atypical antipsychotics owned and 
commercialized worldwide by Janssen. We believe that these products incorporate our technologies. 
INVEGA SUSTENNA is approved in the U.S. for the treatment of schizophrenia and for the treatment of schizoaffective disorder as either a 
monotherapy or adjunctive therapy. Paliperidone palmitate extended-release injectable suspension is approved in the European Union (“EU”) and other 
countries outside of the U.S. for the treatment of schizophrenia and is marketed and sold under the trade name XEPLION. INVEGA 
SUSTENNA/XEPLION is manufactured by Janssen.
INVEGA TRINZA is approved in the U.S. for the treatment of schizophrenia in patients who have been adequately treated with INVEGA 
SUSTENNA for at least four months. TREVICTA is approved in the EU for the maintenance treatment of schizophrenia in adult patients who are clinically 
stable on XEPLION. INVEGA TRINZA/TREVICTA is manufactured by Janssen.  
INVEGA HAFYERA is approved in the U.S. for the treatment of schizophrenia in patients who have been adequately treated with INVEGA 
SUSTENNA for at least four months or INVEGA TRINZA for at least three months. BYANNLI is approved in the EU for the maintenance treatment of 
schizophrenia in adult patients who are clinically stable on XEPLION or TREVICTA. INVEGA HAFYERA/BYANNLI is manufactured by Janssen. 
For a discussion of legal proceedings related to certain of the patents covering INVEGA TRINZA, see Note 19, Commitments and Contingent 
Liabilities in the “Notes to Consolidated Financial Statements” in this Annual Report and for information about risks relating to such legal proceedings, see 
“Item 1A—Risk Factors” in this Annual Report and specifically the section entitled “Uncertainty over IP in the biopharmaceutical industry has been the 
source of litigation and other legal proceedings, and we or our licensees may face claims against IP rights covering our products and competition from 
generic drug manufacturers.”
What is schizophrenia?
See the disease state description in the section entitled “ARISTADA and ARISTADA INITIO” in “Item 1—Business” in this Annual Report.
What is schizoaffective disorder?
Schizoaffective disorder is a condition in which a person experiences a combination of schizophrenia symptoms, such as delusions, hallucinations or 
other symptoms characteristic of schizophrenia, and mood disorder symptoms, such as mania or depression. Schizoaffective disorder is a serious mental 
illness that affects about one in 300 people.
RISPERDAL CONSTA
RISPERDAL CONSTA (risperidone long-acting injection) is a long-acting atypical antipsychotic owned and commercialized worldwide by Janssen 
that incorporates our proprietary technologies. RISPERDAL CONSTA is approved in the U.S. for the treatment of schizophrenia and as both monotherapy 
and adjunctive therapy to lithium or valproate in the maintenance treatment of bipolar I disorder. RISPERDAL CONSTA is approved in numerous 
countries outside of the U.S. for the treatment of schizophrenia and the maintenance treatment of bipolar I disorder. RISPERDAL CONSTA uses our 
polymer-based microsphere injectable extended-release technology to deliver and maintain therapeutic medication levels in the body through just one 
intramuscular injection every two weeks. RISPERDAL CONSTA microspheres are exclusively manufactured by us. 
What is schizophrenia?
See the disease state description in the section entitled “ARISTADA and ARISTADA INITIO” in “Item 1—Business” in this Annual Report.

 
11
Licensed Product
VUMERITY 
VUMERITY (diroximel fumarate) is a novel, oral fumarate with a distinct chemical structure that is approved in the U.S., the EU and several other 
countries for the treatment of relapsing forms of multiple sclerosis in adults, including clinically isolated syndrome, relapsing-remitting disease and active 
secondary progressive disease. 
Under our license and collaboration agreement with Biogen, Biogen holds the exclusive, worldwide license to develop and commercialize 
VUMERITY. For more information about the license and collaboration agreement with Biogen, see the section entitled “Collaborative Arrangements—
Biogen” in “Item 1—Business” in this Annual Report. For a discussion of legal proceedings related to certain of the patents covering VUMERITY, see 
Note 19, Commitments and Contingent Liabilities in the “Notes to Consolidated Financial Statements” in this Annual Report and for information about 
risks relating to such legal proceedings, see “Item 1A—Risk Factors” in this Annual Report and specifically the section entitled “Uncertainty over IP in the 
biopharmaceutical industry has been the source of litigation and other legal proceedings, and we or our licensees may face claims against IP rights covering 
our products and competition from generic drug manufacturers.”
What is multiple sclerosis?
Multiple sclerosis (“MS”) is an unpredictable, often disabling disease of the central nervous system (“CNS”), which interrupts the flow of 
information within the brain, and between the brain and body. MS symptoms can vary over time and from person to person. Symptoms may include 
extreme fatigue, impaired vision, problems with balance and walking, numbness or pain and other sensory changes, bladder and bowel symptoms, tremors, 
problems with memory and concentration and mood changes, among others. Approximately 2.5 million people worldwide have MS, and most are 
diagnosed between the ages of 15 and 50.
Key Development Program
Our R&D is focused on the development of innovative medicines in the field of neuroscience that are designed to address unmet patient needs. As 
part of our ongoing R&D efforts, we have devoted, and will continue to devote, significant resources to conducting preclinical work and clinical studies to 
advance the development of new pharmaceutical products. The discussion below highlights our current key development program. Drug development 
involves a high degree of risk and investment, and the status, timing and scope of our development programs are subject to change. Important factors that 
could adversely affect our drug development efforts are discussed in “Item 1A—Risk Factors” in this Annual Report. See the section entitled “Patents and 
Proprietary Rights” in “Item 1—Business” in this Annual Report for information with respect to the IP protection for our key development program. 
ALKS 2680
ALKS 2680 is a novel, investigational, oral, selective orexin 2 receptor agonist in development as a once-daily treatment for narcolepsy type 1, 
narcolepsy type 2 and idiopathic hypersomnia. Orexin, a neuropeptide produced in the lateral hypothalamus, is considered to be the master regulator of 
wakefulness due to its activation of multiple, downstream wake-promoting pathways that project widely throughout the brain. Targeting the orexin system 
may address excessive daytime sleepiness across hypersomnolence disorders, whether or not deficient orexin signaling is the underlying cause of disease. 
Once-daily oral administration of ALKS 2680 was previously evaluated in a phase 1 study in healthy volunteers and patients with narcolepsy type 1, 
narcolepsy type 2 and idiopathic hypersomnia and is currently being evaluated in two phase 2 studies: Vibrance-1 in patients with narcolepsy type 1 and 
Vibrance-2 in patients with narcolepsy type 2. We expect to initiate Vibrance-3, a phase 2 study in patients with idiopathic hypersomnia, in the first half of 
2025.
Collaborative Arrangements
We have entered into several collaborative arrangements to develop and commercialize products and, in connection with such arrangements, to 
access or provide access to, technological, financial, marketing, manufacturing and other resources, including the arrangements described below.
Janssen
INVEGA SUSTENNA/XEPLION, INVEGA TRINZA/TREVICTA and INVEGA HAFYERA/BYANNLI
Under an exclusive license agreement with Janssen, we provided Janssen with rights to, and know-how, training and technical assistance in respect 
of, our small particle pharmaceutical compound technology, known as NanoCrystal technology, which was used to develop the long-acting INVEGA 
products, and we received milestone payments from Janssen upon the achievement of certain development goals. There are no further milestones to be 
earned under this agreement. The agreement also provides for royalty 

 
12
payments, which consist of a patent royalty and a know-how royalty, both of which are determined on a country-by-country basis. The patent royalty, 
which equals 1.5% of net sales, is payable in each country until the expiration of the last of the patents with valid claims applicable to the product in such 
country. The know-how royalty is a tiered royalty of 3.5% on calendar year net sales up to $250 million; 5.5% on calendar year net sales of between $250 
million and $500 million; and 7.5% on calendar year net sales exceeding $500 million. The know-how royalty rate resets to 3.5% at the beginning of each 
calendar year and is payable until 15 years from the first commercial sale of a product in each individual country, subject to expiry of the agreement. These 
royalty payments may be reduced in any country based on patent litigation or on competing products achieving certain minimum sales thresholds. The 
license agreement, unless earlier terminated, terminates upon the expiration of the last of the patents subject to the agreement. After expiration, Janssen 
retains a non-exclusive, royalty free license to develop, manufacture and commercialize the products subject to certain surviving obligations.
Janssen may terminate the license agreement in whole or in part upon three months’ notice to us. We and Janssen have the right to terminate the 
agreement upon a material breach of the other party which is not cured within a certain time period, or upon the other party’s bankruptcy or insolvency. In 
November 2021, we received notice from Janssen of partial termination of the license agreement, following which Janssen ceased paying us royalties 
related to U.S. sales of INVEGA SUSTENNA, INVEGA TRINZA and INVEGA HAFYERA. In April 2022, we commenced binding arbitration 
proceedings related to, among other things, Janssen’s partial termination of this license agreement and Janssen’s royalty and other obligations under the 
agreement. In May 2023, the arbitral tribunal (the “Tribunal”) in the arbitration proceedings issued a final award (the “Final Award”) that served to 
reinstate the Janssen royalties and required payment by Janssen of back royalties and interest for amounts owed but not yet paid since the effective date of 
the partial termination. The Final Award also provided, among other things, that we were entitled to royalty revenues from Janssen related to net sales of 
INVEGA SUSTENNA through August 20, 2024, INVEGA TRINZA through the second quarter of 2030 (but no later than May 2030 when the license 
agreement expires) and INVEGA HAFYERA through May 2030 (when the license agreement expires).
RISPERDAL CONSTA
Under a product development agreement, we collaborated with Janssen on the development of RISPERDAL CONSTA. Under the development 
agreement, Janssen provided funding to us for the development of RISPERDAL CONSTA, and Janssen is responsible for securing all necessary regulatory 
approvals for the product.
Under two license agreements, we granted Janssen and an affiliate of Janssen exclusive worldwide licenses to use and sell RISPERDAL CONSTA. 
Under our license agreements with Janssen, we receive royalty payments equal to 2.5% of Janssen’s end-market net sales of RISPERDAL CONSTA in 
each country where the license is in effect based on the quarter when the product is sold by Janssen. This royalty may be reduced in any country based on 
lack of patent coverage and significant competition from generic versions of the product. Janssen can terminate the license agreements upon 30 days’ prior 
written notice to us. Either party may terminate the license agreements by written notice following a breach which continues for 90 days after the delivery 
of written notice thereof or upon the other party’s insolvency. The licenses granted to Janssen expire on a country-by-country basis upon the later of (i) the 
expiration of the last patent claiming the product in such country or (ii) 15 years after the date of the first commercial sale of the product in such country, 
provided that in no event will the license granted to Janssen expire later than the twentieth anniversary of the first commercial sale of the product in each 
such country, with the exception of Canada, France, Germany, Italy, Japan, Spain and the United Kingdom, in each case, where the 15-year minimum shall 
pertain regardless. After expiration, Janssen retains a non-exclusive, royalty-free license to manufacture, use and sell RISPERDAL CONSTA.
We exclusively manufacture RISPERDAL CONSTA at our Wilmington, Ohio facility for commercial sale. Under our manufacturing and supply 
agreement with Janssen, we receive manufacturing revenue based on a percentage of Janssen’s net unit sales price for RISPERDAL CONSTA for the 
applicable calendar year. This percentage is determined based on Janssen’s unit demand for such calendar year and varies based on the volume of units 
shipped, with a minimum manufacturing fee of 7.5%. Either party may terminate the manufacturing and supply agreement upon a material breach by the 
other party, which is not resolved within 60 days after receipt of a written notice specifying the material breach or upon written notice in the event of the 
other party’s insolvency or bankruptcy. Janssen may terminate the agreement upon six months’ written notice to us. In the event that Janssen terminates the 
manufacturing and supply agreement without terminating the license agreements, the royalty rate payable to us on Janssen’s net sales of RISPERDAL 
CONSTA would increase from 2.5% to 5.0%.
Revenues from our collaborative arrangements with Janssen accounted for approximately 17%, 31% and 15% of our consolidated revenues for the 
years ended December 31, 2024, 2023 and 2022, respectively.

 
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Biogen
Under a license and collaboration agreement with Biogen, we granted Biogen a worldwide, exclusive, sublicensable license to develop, manufacture 
and commercialize VUMERITY and other products covered by patents licensed to Biogen under that agreement. 
Under this license and collaboration agreement, we received an upfront cash payment and milestone payments related to the achievement of certain 
milestones. We are also eligible to receive additional payments upon achievement of certain milestones, including milestones relating to the first two 
products other than VUMERITY covered by patents licensed to Biogen under the license and collaboration agreement.
In addition, we receive a 15% royalty, subject to increases for VUMERITY manufactured and/or packaged by Biogen or its designees, on 
worldwide net sales of VUMERITY. We are also entitled to receive royalties on net sales of products other than VUMERITY covered by patents licensed 
to Biogen under the license and collaboration agreement, at tiered royalty rates calculated as percentages of net sales ranging from high-single digits to sub-
teen double digits. All royalties are payable on a product-by-product and country-by-country basis until the later of (i) the last-to-expire patent right 
covering the applicable product in the applicable country and (ii) a specified period of time from the first commercial sale of the applicable product in the 
applicable country. Royalties for all products are subject to customary reductions, as set forth in the license and collaboration agreement.
Following FDA approval of VUMERITY and except for the manufacturing responsibilities discussed below, Biogen is now responsible for all 
development and commercialization activities for VUMERITY and all other products covered by the patents that we licensed to Biogen. 
Under the license and collaboration agreement, Biogen appointed us as the toll manufacturer of clinical and commercial supplies of VUMERITY, 
subject to Biogen’s right to manufacture or have manufactured commercial supplies as a back-up manufacturer. In October 2019, we entered into a 
commercial supply agreement with Biogen for the commercial supply of VUMERITY, an amendment to such commercial supply agreement and an 
amendment to the license and collaboration agreement with Biogen, pursuant to which Biogen has conducted a technology transfer and, following an 
agreed manufacturing transition period, has elected to assume responsibility for the manufacture (itself or through a designee) of clinical and commercial 
supplies of VUMERITY in exchange for an increase in the royalty rate to be paid by Biogen to us on net sales of product that is manufactured by Biogen or 
its designee. In May 2024, we completed the sale of our research and development business and manufacturing facility in Athlone, Ireland (the “Athlone 
Facility”) where VUMERITY is manufactured. In connection with the sale of the Athlone Facility, we have entered into a subcontracting arrangement with 
the purchaser of the Athlone Facility for the manufacture of VUMERITY through the manufacturing transition period, which may continue through the end 
of 2025.
Unless earlier terminated, the license and collaboration agreement will remain in effect until the expiry of all royalty obligations. Biogen has the 
right to terminate the license and collaboration agreement at will, on a product-by-product basis or in its entirety upon 180 days’ prior notice to us. Either 
party has the right to terminate the license and collaboration agreement following any governmental prohibition of the transactions effected by the 
agreement, or in connection with an insolvency event involving the other party. Upon termination of the license and collaboration agreement by either 
party, then, at our request, the VUMERITY program will revert to us.
Revenues from Biogen related to this license and collaboration agreement accounted for approximately 9%, 8% and 10% of our consolidated 
revenues for the years ended December 31, 2024, 2023 and 2022, respectively.
Proprietary Technology Platforms
We have used our proprietary technology platforms, which include technologies owned and exclusively licensed to us, to establish drug 
development, clinical development and regulatory expertise and in the development of our products.
Injectable Extended-Release Microsphere Technology
Our injectable extended-release microsphere technology allows us to encapsulate small-molecule pharmaceuticals, peptides and proteins in 
microspheres made of common medical polymers. The technology is designed to enable novel formulations of pharmaceuticals by providing controlled, 
extended release of drugs over time. Drug release from the microsphere is controlled by diffusion of the drug through the microsphere and by 
biodegradation of the polymer. These processes can be modulated through a number of formulation and fabrication variables, including drug substance and 
microsphere particle sizing and choice of polymers and excipients.

 
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LinkeRx Technology
Our long-acting LinkeRx technology platform is designed to enable the creation of extended-release injectable versions of antipsychotic therapies 
and may also be useful in other disease areas in which extended duration of action may provide therapeutic benefits. The technology uses proprietary 
linker-tail chemistry to create new molecular entities derived from known agents.
NanoCrystal Technology
Our NanoCrystal technology is applicable to poorly water-soluble compounds and involves formulating and stabilizing drugs into particles that are 
nanometers in size. A drug in NanoCrystal form can be incorporated into a range of common dosage forms, including tablets, capsules, inhalation devices 
and sterile forms for injection, with the potential for enhanced oral bioavailability, increased therapeutic effectiveness, reduced/eliminated fed/fasted 
variability and sustained duration of intravenous/intramuscular release.
Oral Controlled Release Technology
Our oral controlled release (“OCR”) technologies are used to formulate, develop and manufacture oral dosage forms of pharmaceutical products 
with varied drug release profiles. 
Manufacturing and Product Supply
We own and occupy a manufacturing facility in Wilmington, Ohio. We either purchase active pharmaceutical ingredient (“API”) from third parties 
or receive it from our third-party licensees to manufacture products using our technologies. The manufacture of our products for clinical trials and 
commercial use is subject to Current Good Manufacturing Practices (“cGMP”) regulations and other regulations. Our manufacturing and development 
capabilities include formulation through process development, scale-up and full-scale commercial manufacturing and specialized capabilities for the 
development and manufacture of controlled substances.
Although some materials and related services for our products are currently only available from a single source or a limited number of qualified 
sources, we attempt to acquire an adequate inventory of such materials, establish alternative sources for such materials and related services and/or negotiate 
long-term supply arrangements. However, we cannot be certain that we will continue to be able to obtain long-term supplies of our manufacturing materials 
or long-term provision of related services.
Our supply chain includes an external network of third-party service providers involved in the manufacture of our products whose manufacturing 
facilities and processes are, like ours, subject to inspection by the FDA or comparable agencies in other jurisdictions. Any delay, interruption or other 
issues that arise in the acquisition of API, raw materials, or components, or in the manufacture, fill-finish, packaging, or storage of our marketed or 
development products, including as a result of a failure of our facilities or the facilities or operations of third parties to pass any regulatory agency 
inspection, could significantly impair our ability to manufacture and market our products or advance our development efforts, as the case may be. 
In May 2024, we completed the sale of our Athlone Facility and related business to Novo Nordisk (“Novo”) and entered into subcontracting 
arrangements to continue certain development and manufacturing activities performed at the Athlone Facility for a period of time after the closing of the 
transaction, which may continue through the end of 2025. For information about risks relating to the manufacture of our marketed products and product 
candidates, see “Item 1A—Risk Factors” in this Annual Report and specifically those sections entitled “We rely on third parties to provide goods and 
services in connection with the manufacture and distribution of the products we manufacture” and “We are subject to risks related to the manufacture of our 
products.”
Marketed Products
We manufacture ARISTADA, ARISTADA INITIO, LYBALVI, VIVITROL and microspheres for RISPERDAL CONSTA at our Wilmington, 
Ohio facility. We outsource our packaging operations for ARISTADA, ARISTADA INITIO, LYBALVI and VIVITROL to third-party contractors. Janssen 
is responsible for packaging operations for RISPERDAL CONSTA. Our Wilmington, Ohio facility has been inspected by U.S., European (including the 
UK Medicines and Healthcare products Regulatory Agency), Chinese, Japanese, Brazilian, Turkish, Russian and Saudi Arabian regulatory authorities for 
compliance with required cGMP standards for continued commercial manufacturing. For more information about our Wilmington, Ohio manufacturing 
facility, see “Item 2—Properties” in this Annual Report.
We have entered into subcontracting arrangements for the manufacture of several products in the Athlone Facility that are marketed by third parties, 
including VUMERITY. This facility has been inspected by regulatory authorities of numerous jurisdictions for compliance with required cGMP standards 
for continued commercial manufacturing. 

 
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Clinical Products 
We manufacture clinical supplies of injectable extended-release products and solid dosage form products at our Wilmington, Ohio facility. We have 
also contracted with third-party manufacturers to formulate certain products for clinical use. We require that our contract manufacturers adhere to cGMP in 
the manufacture of our products or components of our products for clinical use.
Research & Development
We devote significant resources to R&D programs. We focus our R&D efforts on developing novel therapeutics in areas of high unmet medical 
need. Our R&D efforts include, but are not limited to, areas such as pharmaceutical formulation, analytical chemistry, process development, engineering, 
scale-up and drug optimization/delivery. Please see “Item 7—Management’s Discussion and Analysis of Financial Condition and Results of Operations” in 
this Annual Report for additional information relating to our R&D expenditures. 
Permits and Regulatory Approvals
We hold various permits, registrations, approvals and/or licenses in respect of our manufacturing and related activities. The primary licenses held in 
this regard are FDA Registrations of Drug Establishment, and licenses from the Drug Enforcement Administration of the U.S. Department of Justice (the 
“DEA”). We also hold various authorizations, licenses and certificates from the Health Products Regulatory Authority in Ireland, including an 
Investigational Medicinal Products Manufacturers Authorization (No. IMP074/00002) and a Manufacturers Authorization (No. M13297/00001) in respect 
of our offices located in Dublin, Ireland, and a Manufacturers Authorization (No. M13297/00002), in respect of the Athlone Facility, pending completion 
of updates to applicable product filings. We also hold current GMP certificates associated with each of these authorizations. Due to certain U.S. state law 
requirements, we also hold state licenses to cover distribution activities conducted in certain states where required. Additional Manufacturer Authorizations 
that we previously held in respect of the Athlone Facility were transferred to Novo with the sale of the facility and related business in May 2024. 
We do not generally act as the marketing authorization holder for products incorporating our technologies that have been developed on behalf of a 
licensee of such technologies. In such cases, our licensee usually holds the relevant marketing authorization from the FDA or other relevant regulatory 
authority, and we support this authorization as needed, including by furnishing a copy of the product’s Drug Master File, or chemistry, manufacturing and 
controls data, to the relevant regulator. We generally update this information annually with the relevant regulator. In other cases where we have developed 
proprietary products, such as VIVITROL, ARISTADA, ARISTADA INITIO and LYBALVI, we hold the marketing authorization and related regulatory 
documentation ourselves.
Marketing, Sales and Distribution
We are responsible for the marketing of VIVITROL, ARISTADA, ARISTADA INITIO, and LYBALVI in the U.S. We focus our sales and 
marketing efforts on physicians in private practice and in public treatment systems. We believe that we use customary pharmaceutical company practices to 
market our products, including through advertisements, professional symposia, selling initiatives and other methods, and to educate individual physicians, 
nurses, social workers, counselors and other stakeholders involved in the treatment of opioid dependence, alcohol dependence, schizophrenia and bipolar I 
disorder. We provide, and contract with third-party vendors to provide, customer services and other related programs for our products, such as product-
specific websites, insurance research services and order, delivery and fulfillment services.
Our sales force for VIVITROL in the U.S. consisted of approximately 105 individuals as of December 31, 2024. VIVITROL is primarily sold to 
pharmaceutical wholesalers, pharmacies, specialty distributors and treatment providers. Product sales of VIVITROL during the year ended December 31, 
2024 to McKesson Corporation, Cardinal Health and Cencora, Inc. (formerly known as Amerisource Bergen, “Cencora”) represented approximately 34%, 
21% and 16%, respectively, of total VIVITROL gross sales.
Our sales force for ARISTADA, ARISTADA INITIO and LYBALVI in the U.S. consisted of approximately 355 individuals as of December 31, 
2024. ARISTADA, ARISTADA INITIO and LYBALVI are primarily sold to pharmaceutical wholesalers. Product sales of ARISTADA and ARISTADA 
INITIO during the year ended December 31, 2024 to McKesson Corporation, Cardinal Health and Cencora represented approximately 38%, 32% and 23%, 
respectively, of total ARISTADA and ARISTADA INITIO gross sales. Product sales of LYBALVI during the year ended December 31, 2024 to 
McKesson Corporation, Cardinal Health and Cencora represented approximately 35%, 32% and 29%, respectively, of total LYBALVI gross sales.
ICS, a division of Cencora, provides warehousing, shipping and administrative services for VIVITROL, ARISTADA, ARISTADA INITIO and 
LYBALVI.

 
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Under our license agreements with Janssen, Biogen and other licensees and sublicensees, the licensees and sublicensees are typically responsible for 
the commercialization of any products developed under their respective agreements if and when regulatory approval is obtained.
Competition
We face intense competition in the development, manufacture, marketing and commercialization of our products from many and varied sources, 
such as research institutions and biopharmaceutical companies, including other companies with similar technologies. Some of these competitors are also 
our licensees, who control the commercialization of products from which we receive manufacturing and/or royalty revenues. In some cases, these 
competitors may be working to develop and market other products, systems, or other methods of preventing or reducing disease, or new small-molecule or 
other classes of drugs.
The biopharmaceutical industry is characterized by intensive research, development and commercialization efforts and rapid and significant 
technological change. In many cases, there are already products on the market that may be in direct competition with our commercial products or products 
in development. In addition, there are many companies developing products for use in similar indications or with similar technologies to ours with whom 
we and our licensees compete, many of whom are larger and have significantly greater financial, operational and other resources than we do. Other smaller 
or earlier stage companies may also prove to be significant competitors, whether through focused or more abbreviated development programs, or 
collaborative arrangements with large, established companies. Some of the products being developed by our competitors are being designed to work 
differently than our products and may prove to be safer or more effective than our products or achieve regulatory approval and be commercialized earlier 
than our products, which may render our products or technology platforms obsolete or noncompetitive or make it more challenging for us to commercialize 
our products. With respect to our products, we believe that our ability to successfully compete will depend on, among other things, the existence of 
competing or alternative products in the marketplace, including generic competition, and the relative price of those products; the efficacy, safety and 
reliability of our products compared to competing or alternative products; product acceptance by, and preferences of, physicians, other healthcare providers 
and patients; our ability to comply with applicable laws, regulations and regulatory requirements with respect to the manufacture and/or commercialization 
of our products, including any changes or increases to regulatory restrictions; protection of our proprietary rights relating to our products; our ability to 
obtain reimbursement for our products; our ability to complete clinical development and obtain regulatory approvals for our products, and the timing and 
scope of any such regulatory approvals; our ability to successfully manufacture and provide a reliable supply of commercial quantities of a product to the 
market; and our ability to recruit, retain and develop skilled employees.
With respect to our proprietary injectable product platform, we are aware that there are other companies developing extended-release delivery 
systems for pharmaceutical products, including but not limited to technology from Pharmathen S.A., which underpins aripiprazole formulations in 
development, and technology underpinning Teva’s once every two weeks injectable microsphere formulation, each for the treatment of schizophrenia. In 
the treatment of schizophrenia, ARISTADA, the long-acting INVEGA products and RISPERDAL CONSTA compete with each other and a number of 
other injectable products, including ZYPREXA RELPREVV ((olanzapine) For Extended Release Injectable Suspension), which is marketed and sold by 
Lilly; ABILIFY MAINTENA (aripiprazole for extended release injectable suspension), a once-monthly injectable formulation of ABILIFY (aripiprazole) 
developed by Otsuka Pharm. Co.; ABILIFY ASIMTUFII (aripiprazole), a once-every-two-months injectable formulation of ABILIFY (aripiprazole) 
developed by Otsuka Pharm. Co.; PERSERIS (risperidone for extended release injectable suspension), a once-monthly formulation of risperidone marketed 
by Indivior plc; RYKINDO (risperidone), a once-every-two-weeks injectable formulation of risperidone developed by Luye Pharma Group; UZEDY 
(risperidone) extended-release injectable suspension, for subcutaneous use, developed and marketed by MedinCell S.A. and Teva; and generic versions of 
branded injectable products.
In the treatment of schizophrenia, LYBALVI competes with other oral antipsychotic products, including CAPLYTA (lumateperone) developed and 
marketed by Intra-Cellular Therapies, Inc.; REXULTI (brexpiprazole), which is co-marketed by Otsuka Pharm Co. and H. Lundbeck A/S plc; VRAYLAR 
(cariprazine), which is marketed and sold by Abbvie Inc.; COBENFY (xanomeline and trospium chloride), which is marketed and sold by Bristol-Myers 
Squibb Company; other oral compounds currently on the market; and generic versions of branded oral products. Other pharmaceutical companies are 
developing products for the treatment of schizophrenia that, if approved by the FDA, would compete with LYBALVI. 
In the treatment of bipolar I disorder, LYBALVI and RISPERDAL CONSTA compete with antipsychotics such as oral aripiprazole; VRAYLAR; 
ABILIFY MAINTENA; ABILIFY ASIMTUFII; CAPLYTA; RYKINDO; risperidone; quetiapine; olanzapine; and ziprasidone. Other pharmaceutical 
companies are developing products for the treatment of bipolar I disorder that, if approved by the FDA, would compete with LYBALVI. 

 
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In the treatment of alcohol dependence, VIVITROL competes with generic acamprosate calcium (also known as CAMPRAL) and generic 
disulfiram (also known as ANTABUSE) as well as currently marketed drugs, including generic drugs, also formulated from naltrexone. Other 
pharmaceutical companies are developing products that have shown some potential in treating alcohol dependence that, if approved by the FDA, would 
compete with VIVITROL.
In the treatment of opioid dependence, VIVITROL competes with SUBOXONE (buprenorphine HCl/naloxone HCl dehydrate sublingual tablets), 
SUBOXONE (buprenorphine/naloxone) Sublingual Film, SUBUTEX (buprenorphine HCl sublingual tablets) and SUBLOCADE (once-monthly 
buprenorphine extended-release injection), each of which is marketed and sold by Indivior plc; BUNAVAIL buccal film (buprenorphine and naloxone) 
marketed by BioDelivery Sciences; ZUBSOLV (buprenorphine and naloxone) marketed by Orexo US, Inc.; and BRIXADI (buprenorphine) extended-
release injection for subcutaneous use (CIII), marketed by Braeburn Inc. VIVITROL also competes with methadone, oral naltrexone and generic versions 
of SUBUTEX and SUBOXONE sublingual tablets. Other pharmaceutical companies are developing products that have shown potential in treating opioid 
dependence that, if approved by the FDA, would compete with VIVITROL. 
In the treatment of MS, VUMERITY competes with AVONEX (interferon beta-1a), TYSABRI (natalizumab), TECFIDERA (dimethyl fumarate), 
and PLEGRIDY (peginterferon beta-1a) from Biogen; OCREVUS (ocrelizumab) from Genentech; BETASERON (interferon beta-1b) from Bayer 
HealthCare Pharmaceuticals; COPAXONE (glatiramer acetate) from Teva; REBIF (interferon beta-1a) and MAVENCLAD (cladribine) from EMD 
Serono, Inc.; GILENYA (fingolimod), EXTAVIA (interferon beta-1b) and MAYZENT (siponimod) from Novartis AG; AUBAGIO (teriflunomide) and 
LEMTRADA (alemtuzumab) from Sanofi-Aventis; ZEPOSIA (ozanimod) from Bristol-Myers Squibb Company; PONVORY (ponesimod) from Janssen; 
and BRIUMVI (ublituximab-xiiy) from TG Therapeutics, Inc. 
With respect to our NanoCrystal technology, we are aware that other technology approaches similarly address poorly water-soluble drugs. These 
approaches include nanoparticles, cyclodextrins, lipid-based self-emulsifying drug delivery systems, dendrimers and micelles, among others, any of which 
could limit the potential success and growth prospects of products incorporating our NanoCrystal technology. In addition, there are many competing 
technologies to our OCR technology, some of which are owned by large pharmaceutical companies with drug delivery divisions or other, smaller drug-
delivery-specific companies.
Patents and Proprietary Rights
Our success depends, in part, on our ability to obtain and maintain patent protection for our products, including those marketed and sold by our 
licensees, to maintain trade secret protection and to operate without infringing upon the proprietary rights of others. We have a proprietary portfolio of 
patent rights and exclusive licenses to patents and patent applications, which includes numerous patents in the U.S. and in other countries directed to 
compositions of matter, methods of treatment and formulations, and processes of preparation. In the future, we plan to file additional patent applications in 
the U.S. and in other countries directed to new or improved products and processes, and we intend to continue to vigorously defend our patent positions. In 
addition, our licensees may own additional patents that cover those products from which we receive royalties.

 
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ARISTADA and ARISTADA INITIO
We have several U.S. patents and patent applications, and a number of corresponding non-U.S. counterparts, that cover ARISTADA and/or 
ARISTADA INITIO. Our principal U.S. patents for ARISTADA and/or ARISTADA INITIO and their expiration dates are as follows:
 
U.S. Patent No.
  Product(s) Covered
Expiration Date
 
8,431,576  
ARISTADA;

ARISTADA INITIO
2030
 
8,796,276  
ARISTADA;

ARISTADA INITIO
2030
 
10,112,903  
ARISTADA;

ARISTADA INITIO
2030
 
10,023,537  
ARISTADA
2030
 
10,351,529  
ARISTADA;

ARISTADA INITIO
2030
 
11,518,745  
ARISTADA;

ARISTADA INITIO
2030
 
12,180,164  
ARISTADA;

ARISTADA INITIO
2030
 
11,273,158  
ARISTADA;

ARISTADA INITIO
2039
 
9,034,867  
ARISTADA
2032
 
10,226,458  
ARISTADA
2032
 
9,193,685  
ARISTADA
2033
 
9,861,699  
ARISTADA
2033
 
10,342,877  
ARISTADA
2033
 
10,639,376  
ARISTADA
2033
 
11,097,006  
ARISTADA
2033
 
11,969,469  
ARISTADA
2033
 
9,452,131  
ARISTADA
2035
 
9,526,726  
ARISTADA
2035
 
10,064,859  
ARISTADA
2035
 
10,238,651  
ARISTADA
2035
 
10,478,434  
ARISTADA
2035
 
10,813,928  
ARISTADA
2035
 
10,973,816  
ARISTADA
2035
 
11,406,632  
ARISTADA
2035
 
11,883,394  
ARISTADA
2035
 
10,016,415  
ARISTADA INITIO
2035
 
10,688,091  
ARISTADA INITIO
2035
 
10,849,894  
ARISTADA INITIO
2035
 
11,115,552  
ARISTADA INITIO
2035
VIVITROL
We have a number of patents and pending patent applications covering our microsphere technology throughout the world, which, to some extent, 
cover VIVITROL. 
We own one unexpired Orange-Book listed U.S. patent covering VIVITROL, which expires in the U.S. in 2029. Pursuant to the terms of a 
confidential settlement and license agreement entered into in August 2023 with Teva, we granted Teva a non-exclusive, royalty-free, non-transferable, non-
sublicensable limited license under the remaining patent covering VIVITROL to market and sell a generic version of VIVITROL in the U.S. beginning on 
January 15, 2027 (the “First Entry Date”), or earlier under certain circumstances. Under the terms of a settlement and license agreement entered into in July 
2019 with Amneal Pharmaceuticals LLC (“Amneal”), we granted Amneal a non-exclusive license under certain patents covering VIVITROL, including the 
remaining patent covering VIVITROL in the U.S., to market and sell a generic formulation of VIVITROL in the U.S. beginning on the earlier of the First 
Entry Date, sometime in 2028 or earlier under certain circumstances. 

 
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INVEGA SUSTENNA/XEPLION, INVEGA TRINZA/TREVICTA and INVEGA HAFYERA/BYANNLI
Our NanoCrystal technology patent portfolio, licensed to Janssen, contains a number of granted patents and pending patent applications throughout 
the world, including in the U.S. and in countries outside of the U.S. The latest to expire of the patents subject to our license agreement expires in 2030 in 
the U.S., the EU and certain other countries. In addition, Janssen has other patents not subject to our license agreement, including, among others, one that 
covers INVEGA TRINZA in the U.S. and expires in 2036 and two that cover INVEGA HAFYERA in the U.S. and expire in 2041. For a discussion of 
legal proceedings related to patents covering INVEGA TRINZA, see Note 19, Commitments and Contingent Liabilities in the “Notes to Consolidated 
Financial Statements” in this Annual Report.
VUMERITY
We have U.S. patents and patent applications, and a number of corresponding non-U.S. counterparts, that cover VUMERITY. U.S. Patent Nos. 
8,669,281, 9,090,558 and 10,080,733, each expiring in 2033, cover compositions of, or methods of treatment for, VUMERITY. For a discussion of legal 
proceedings related to patents covering VUMERITY, see Note 19, Commitments and Contingent Liabilities in the “Notes to Consolidated Financial 
Statements” in this Annual Report.
LYBALVI 
We own or have a license to U.S. and worldwide patents and patent applications that cover a class of compounds that includes the opioid modulators 
in LYBALVI. In addition, we own U.S. and worldwide patents and patent applications that claim formulations and methods of treatment that cover 
LYBALVI. The principal owned or licensed U.S. patents for LYBALVI and their expiration dates are as follows:
 
U.S. Patent No.
  Product Covered
Expiration Date
 
7,262,298  
LYBALVI
2025
 
8,680,112  
LYBALVI
2030
 
9,119,848  
LYBALVI
2031
 
10,005,790  
LYBALVI
2031
 
9,126,977  
LYBALVI
2031
 
9,517,235  
LYBALVI
2031
 
9,943,514  
LYBALVI
2031
 
10,300,054  
LYBALVI
2031
 
10,716,785  
LYBALVI
2031
 
11,185,541  
LYBALVI
2031
 
11,241,425  
LYBALVI
2031
 
11,351,166  
LYBALVI
2031
 
11,793,805  
LYBALVI
2031
 
12,194,035  
LYBALVI
2031
 
8,778,960  
LYBALVI
2032
 
11,707,466  
LYBALVI
2041
 
11,951,111  
LYBALVI
2041
ALKS 2680
We have U.S. patent protection that extends to 2041, several U.S. patent applications, and a number of corresponding non-U.S. counterparts, that 
cover ALKS 2680. 
Protection of Proprietary Rights and Competitive Position
We have exclusive rights through licensing agreements with third parties to issued U.S. patents, pending patent applications and corresponding 
patents or patent applications in countries outside the U.S, subject in certain instances to the rights of the U.S. government to use the technology covered by 
such patents and patent applications. Under certain licensing agreements, we are responsible for patent expenses, and we pay annual license fees and/or 
minimum annual royalties. In addition, under these licensing agreements, we are typically obligated to pay royalties on future sales of products, if any, 
covered by the licensed patents.

 
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There may be patents issued to third parties that relate to our products or technologies. The manufacture, use, offer for sale, sale or import of some 
of our products might be found to infringe on the claims of these patents. A third party might file an infringement action against us. The cost of defending 
such an action is likely to be high, and we might not receive a favorable ruling. There may also be patent applications filed by third parties that relate to 
some of our products if issued in their present form. The patent laws of the U.S. and other countries are distinct, and decisions as to patenting, validity of 
patents and infringement of patents may be resolved differently in different countries. 
If patents exist or are issued that cover our products or technologies, we or our licensees may not be able to manufacture, use, offer for sale, sell or 
import some of our products without first getting a license from the patent holder. The patent holder may not grant us a license on reasonable terms, or it 
may refuse to grant us a license at all. This could delay or prevent us from developing, manufacturing, selling or importing those of our products that would 
require the license.
We try to protect our proprietary position by filing patent applications in the U.S. and in other countries related to our proprietary technologies, 
inventions and improvements that are important to the development of our business. Because the patent position of biopharmaceutical companies involves 
complex legal and factual questions, enforceability of patents cannot be predicted with certainty. The ultimate degree of patent protection that will be 
afforded to products and processes, including ours, in the U.S. and in other important markets, remains uncertain and is dependent upon the scope of 
protection decided upon by the patent offices, courts and lawmakers in these countries. Patents, if issued, may be challenged, invalidated or circumvented. 
Thus, any patents that we own or license from others may not provide any protection against competitors. Our pending patent applications, those we may 
file in the future, or those we may license from third parties, may not result in patents being issued. If issued, such patents may not provide us with 
proprietary protection or competitive advantages against competitors with similar technology. Furthermore, others may independently develop similar 
technologies or duplicate any technology that we have developed outside the scope of our patents. The laws of certain countries do not protect our IP rights 
to the same extent as the laws of the U.S.
We also rely on trade secrets, know-how and inventions, which are not protected by patents, to maintain our competitive position. We try to protect 
this information by entering into confidentiality agreements with parties that have access to such information, such as our corporate partners, collaborators, 
licensees, employees and consultants. However, any of these parties may breach such agreements and may disclose our confidential information or our 
competitors might learn of the information in some other way. If any trade secret, know-how or other invention not protected by a patent were to be 
disclosed to, or independently developed by, a competitor, such event could materially adversely affect our business, financial condition, cash flows and 
results of operations. For more information, see “Item 1A—Risk Factors” in this Annual Report.
Our trademarks, including VIVITROL, ARISTADA, ARISTADA INITIO and LYBALVI, are important to us and are generally covered by 
trademark applications or registrations with the U.S. Patent and Trademark Office (the “USPTO”) and the patent or trademark offices of other countries. 
Our licensed products and products using our proprietary technologies also use trademarks that are owned by our licensees, such as the trademarks for 
INVEGA SUSTENNA/XEPLION, INVEGA TRINZA/TREVICTA, INVEGA HAFYERA/BYANNLI and RISPERDAL CONSTA, which are registered 
trademarks of Johnson & Johnson or its affiliated companies and VUMERITY, which is a registered trademark of Biogen (and used by us under license). 
Trademark protection varies in accordance with local law and continues in some countries as long as the trademark is used and in other countries as long as 
the trademark is registered. Trademark registrations generally are for fixed but renewable terms.
Regulatory
Regulation of Pharmaceutical Products
United States
Our current and contemplated activities, and the products and processes that result from such activities, are subject to substantial government 
regulation. Before new pharmaceutical products may be sold in the U.S., preclinical studies and clinical trials of the products must be conducted and the 
results submitted to the FDA for approval. Clinical trial programs must determine an appropriate dose and regimen, establish substantial evidence of 
effectiveness and define the conditions for safe use. This is a high-risk process that requires stepwise clinical studies in which the product must successfully 
meet pre-specified endpoints.
Preclinical Testing: Before beginning testing of any compounds with potential therapeutic value in human subjects in the U.S., stringent 
government requirements for preclinical data must be satisfied. Preclinical testing includes both in vitro, or in an artificial environment outside of a living 
organism, and in vivo, or within a living organism, laboratory evaluation and characterization of the safety and efficacy of a drug and its formulation.

 
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Investigational New Drug Application: All available data from animal pharmacology and toxicology studies are included in an Investigational New 
Drug application (“IND”) submitted to the FDA and are reviewed by the FDA prior to commencement of first-in-human clinical trials. The preclinical data 
must provide an adequate basis for evaluating both the safety and the scientific rationale for the initial clinical studies in human subjects. In certain cases 
where human clinical data from ex-U.S. studies are available prior to submitting the IND, these data would also be included in the IND for review by the 
FDA prior to commencing clinical trials in the U.S. In addition, information pertaining to the composition, manufacturer, stability, and controls used for 
manufacturing the drug substance and the drug product are included in the IND to support identification, quality, purity, and strength of the investigational 
drug product.
Clinical Trials: Clinical trials involve the administration of an investigational drug to healthy human volunteers or to patients under the supervision 
of a qualified investigator pursuant to an FDA-reviewed protocol. Human clinical trials are typically conducted in three sequential phases, although the 
phases may overlap with one another and, depending upon the nature of the clinical program, a specific phase or phases may be skipped altogether. Clinical 
trials must be conducted under protocols that detail the objectives of the study, the parameters to be used to monitor safety, and the efficacy criteria, if any, 
to be evaluated. Each protocol must be submitted to the FDA as part of the applicable IND.
•
Phase 1 clinical trials—test for safety, tolerability, absorption, bio-distribution, metabolism, excretion and clinical pharmacology and, if 
possible, to gain early evidence regarding efficacy.
•
Phase 2 clinical trials—involve a relatively small sample of the intended patient population and seek to assess the efficacy of the drug for 
targeted indications, to determine dose-response and the optimal dose range and to gather additional information relating to the safety profile.
•
Phase 3 clinical trials—consist of expanded, large-scale studies of patients with the target disease or disorder to obtain definitive statistical 
evidence of the efficacy and safety of the proposed product and dosing regimen.
In the U.S., the results of the preclinical and clinical testing of a product are then submitted to the FDA in the form of a New Drug Application 
(“NDA”) or a Biologics License Application (“BLA”), depending on the nature of the product. The NDA or BLA also include information pertaining to the 
chemistry, manufacturing and controls (“CMC”) of the product as well as the proposed product packaging and labeling. The submission of an application is 
not a guarantee that the FDA will find the application complete and accept it for filing. The FDA may refuse to file the application if it is not considered 
sufficiently complete to permit a review and will inform the applicant of the reason for the refusal. The applicant may then resubmit the application and 
include supplemental information.
Once an NDA or BLA is accepted for filing, the FDA has 10 months, under its standard review process, within which to review the application (for 
some applications, the review process is longer than 10 months). For drugs that, if approved, would represent a significant improvement in the safety or 
effectiveness of the treatment, diagnosis, or prevention of serious conditions when compared to standard applications, the FDA may assign “priority 
review” designation and review the application within six months of filing. The FDA has additional review pathways to expedite development and review 
of new drugs that are intended to treat serious or life-threatening conditions and demonstrate the potential to address unmet medical needs, including: “Fast 
Track,” “Breakthrough Therapy,” and “Accelerated Approval.” However, none of these expedited pathways ensure that a product will receive FDA 
approval in a timely manner or at all.
As part of its review, the FDA may refer the application to an advisory committee for independent advice on questions related to the development of 
the drug, recommendation as to whether the application should be approved or other guidance that the FDA may seek. The FDA is not bound by the 
recommendation of an advisory committee; however, historically, it has often followed such recommendations. The FDA may determine that a Risk 
Evaluation and Mitigation Strategy (“REMS”) is necessary to ensure that the benefits of a new product outweigh its risks. If required, a REMS may include 
various elements, such as publication of a medication guide, a patient package insert, a communication plan to educate healthcare providers of the drug’s 
risks, limitations on who may prescribe or dispense the drug, or other measures that the FDA deems necessary to support the safe use of the drug.
In reviewing an NDA or BLA, the FDA may grant marketing approval, or issue a complete response letter to communicate to the applicant the 
reasons the application cannot be approved in its then-current form and provide input on the additional information that the FDA requires and/or changes 
that must be made before an application can be approved. Even if such additional information is submitted to the FDA or such changes made, the FDA may 
ultimately decide that the NDA or BLA still does not satisfy the FDA’s criteria for approval. The receipt of regulatory approval often takes a number of 
years, involves the expenditure of substantial resources and depends on a number of factors, including the severity of the disease in question, the 
availability of alternative treatments, efficacy and potential safety signals observed in preclinical tests or clinical trials, and the risks and benefits 
demonstrated in clinical trials. It is impossible to predict with any certainty whether and when the FDA will grant marketing approval for a given product. 
Even if a product is approved, the approval may be subject to limitations based on the FDA’s interpretation of the data. For example, the FDA may require, 
as a condition of approval, restricted distribution and use, enhanced labeling, special packaging or 

 
22
labeling, expedited reporting of certain adverse events, pre-approval of promotional materials or restrictions on direct-to-consumer advertising, any of 
which could negatively impact the commercial success of a drug. The FDA may also require a sponsor to conduct additional post-marketing studies as a 
condition of approval to provide data on safety and effectiveness. In addition, prior to commercialization, products that may be deemed controlled 
substances are subject to review and scheduling by the DEA.
The FDA tracks information on side effects and adverse events reported during clinical studies and after marketing approval. Non-compliance with 
safety reporting requirements may result in civil or criminal penalties. Side effects or adverse events that are identified during clinical trials can delay, 
impede or prevent marketing approval. Based on new safety information that emerges after approval, the FDA can mandate product labeling changes, 
impose a REMS or the addition of elements to an existing REMS, require new post-marketing studies (including additional clinical trials), or suspend or 
withdraw approval of the product. 
If we seek to make certain types of changes to an approved product, such as adding a new indication, making certain manufacturing changes, or 
changing manufacturers or suppliers of certain ingredients or components, the FDA will need to review and approve such changes in advance. In the case 
of adding a new indication, we would be required to demonstrate with additional clinical data that the product is safe and effective for the new intended 
use. Such regulatory reviews can result in denial or modification of the planned changes, or requirements to conduct additional tests or evaluations that can 
substantially delay or increase the cost of the planned changes.
In addition, the FDA regulates all advertising and promotional activities for products under its jurisdiction. A company can make only those claims 
relating to safety and efficacy that are consistent with FDA regulation and guidance, and the product’s approved label. However, physicians may prescribe 
legally available drugs for uses that are not described in the drug’s labeling. Such off-label uses are common across certain medical specialties and often 
reflect a physician’s belief that the off-label use is the best treatment for a particular patient. The FDA does not regulate the behavior of physicians in their 
choice of treatments, but the FDA regulations do impose stringent restrictions on manufacturers’ communications regarding off-label uses. Failure to 
comply with applicable FDA requirements may subject a company to adverse publicity, enforcement action by the FDA and the U.S. Department of 
Justice, corrective advertising and the full range of civil and criminal penalties available to the FDA and the U.S. Department of Justice.
Controlled Substances Act: The DEA regulates pharmaceutical products that are controlled substances. Controlled substances are those drugs that 
appear on one of the five schedules promulgated and administered by the DEA under the Controlled Substances Act (the “CSA”). The CSA governs, 
among other things, the inventory, distribution, recordkeeping, handling, security and disposal of controlled substances. For example, pharmaceutical 
products that act on the CNS are often evaluated for abuse potential; if a product is then classified as a controlled substance, it must undergo scheduling by 
the DEA, which is a separate process that may delay the commercial launch of such product even after FDA approval of the NDA for such product. 
Further, companies with a scheduled pharmaceutical product are subject to periodic and ongoing inspections by the DEA and similar state drug 
enforcement authorities to assess ongoing compliance with the DEA’s regulations. Any failure to comply with these regulations could lead to a variety of 
sanctions, including the revocation, or a denial of renewal, of any DEA registration and injunctions, or civil or criminal penalties.
Outside the United States
Certain of our products are commercialized by our licensees in numerous jurisdictions outside the U.S. Most of these jurisdictions have product 
approval and post-approval regulatory processes that are similar in principle to those in the U.S. In Europe, there are several mechanisms for marketing 
approval, depending on the type of product for which approval is sought. Under the centralized procedure, a company submits a single application to the 
European Medicines Agency (“EMA”). The marketing application is evaluated by the Committee for Medicinal Products for Human Use (“CHMP”), the 
expert scientific committee of the EMA. If the CHMP determines that the marketing application fulfills the requirements for quality, safety, and efficacy, it 
will submit a favorable opinion to the European Commission (“EC”). The CHMP opinion is not binding, but is typically adopted by the EC. A marketing 
application approved by the EC is valid in all EU member states.
In addition to the centralized procedure, Europe also has: (i) a nationalized procedure, which requires a separate application to, and approval 
determination by, each country; (ii) a decentralized procedure, whereby applicants submit identical applications to several countries and receive 
simultaneous approval; and (iii) a mutual recognition procedure, where applicants submit an application to one country for review and other countries may 
accept or reject the initial decision. Regardless of the approval process employed, various parties share responsibilities for the monitoring, detection and 
evaluation of adverse events post-approval, including national authorities, the EMA, the EC, other relevant regulatory authorities and the marketing 
authorization holder.
Good Manufacturing Practices
The FDA, the EMA, the competent authorities of the EU member states and other regulatory agencies regulate and inspect equipment, facilities and 
processes used in the manufacturing of pharmaceutical products prior to approving a product. Once approval from a regulatory agency is obtained, if a 
company makes a material change in manufacturing equipment, location or process, 

 
23
additional regulatory review and approval may be required. Companies also must adhere to cGMP and product-specific regulations enforced by the FDA 
and other regulatory agencies both in the manufacture of clinical product and following product approval. The FDA, the EMA and other regulatory 
agencies also conduct regular, periodic visits to re-inspect equipment, facilities and processes following the initial approval of a product and may also 
request that certain information or records be provided in writing for review in lieu of an on-site visit. If, as a result of these inspections or records reviews, 
it is determined that our equipment, facilities or processes do not comply with applicable regulations and conditions of product approval, regulatory 
agencies may seek civil, criminal or administrative sanctions and/or remedies against us, including the suspension of our manufacturing operations.
Good Clinical Practices
The FDA, the EMA and other regulatory agencies promulgate regulations and standards, commonly referred to as Good Clinical Practices (“GCP”), 
for designing, conducting, monitoring, auditing and reporting the results of clinical trials to ensure that the data and results are accurate and that the trial 
participants are adequately protected. The FDA, the EMA and other regulatory agencies enforce GCP through periodic inspections of trial sponsors, 
principal investigators, trial sites, contract research organizations (“CROs”) and institutional review boards. If our studies fail to comply with applicable 
GCP, patient safety and well-being could be impacted, the clinical data generated in our clinical trials may be deemed unreliable, and relevant regulatory 
agencies may require us to perform additional clinical trials before approving our marketing applications. Noncompliance can also result in civil or criminal 
sanctions. We rely on third parties, including CROs, to carry out many of our clinical trial-related activities. Failure of such third parties to comply with 
GCP can likewise result in rejection of our clinical trial data or other sanctions.
Hatch-Waxman Act
Under the U.S. Drug Price Competition and Patent Term Restoration Act of 1984 (the “Hatch-Waxman Act”), Congress created an abbreviated 
FDA review process for generic versions of pioneer, or brand-name, drug products. The law also provides incentives by awarding, in certain circumstances, 
non-patent related marketing exclusivities to pioneer drug manufacturers. Newly approved drug products and changes to the conditions of use of approved 
products may benefit from periods of non-patent-related marketing exclusivity in addition to any patent protection the drug product may have. The Hatch-
Waxman Act provides five years of new chemical entity (“NCE”) marketing exclusivity to the first applicant to gain approval of an NDA for a product that 
contains an active ingredient, known as the active drug moiety, not found in any other approved product. The FDA is prohibited from accepting any 
abbreviated new drug application (“ANDA”) for a generic drug or 505(b)(2) application referencing the NCE for five years from the date of approval of the 
NCE, or four years in the case of an ANDA or 505(b)(2) application containing a patent challenge, and in both cases may not approve such generic drug or 
505(b)(2) application until expiration of NCE marketing exclusivity. A 505(b)(2) application is an NDA in which the applicant relies, in part, on data and 
the FDA’s findings of safety and efficacy from studies not conducted by or for the applicant and for which the applicant has not obtained a right of 
reference. Hatch-Waxman Act exclusivities will not prevent the submission or approval of a full NDA (e.g., under 505(b)(1)), as opposed to an ANDA or 
505(b)(2) application, for any drug, including, for example, a drug with the same active ingredient, dosage form, route of administration, strength and 
conditions of use.
The Hatch-Waxman Act also provides three years of exclusivity for applications containing the results of new clinical investigations, other than 
bioavailability studies, essential to the FDA’s approval of new uses of approved products, such as new indications, dosage forms, strengths, or conditions 
of use. However, this exclusivity only protects against the approval of ANDAs and 505(b)(2) applications for the protected use and will not prohibit the 
FDA from accepting or approving ANDAs or 505(b)(2) applications for other products containing the same active ingredient.
The Hatch-Waxman Act requires NDA applicants and NDA holders to provide certain information about patents related to the drug for listing in the 
FDA’s Approved Drugs Product List, commonly referred to as the Orange Book. ANDA and 505(b)(2) applicants must then certify regarding each of the 
patents listed with the FDA for the reference product. A certification that a listed patent is invalid or will not be infringed by the marketing of the 
applicant’s product is called a “Paragraph IV certification.” If the ANDA or 505(b)(2) applicant provides such a notification of patent invalidity or 
noninfringement, then the FDA may accept the ANDA or 505(b)(2) application four years after approval of the NDA for an NCE. If a Paragraph IV 
certification is filed and the ANDA or 505(b)(2) application has been accepted as a reviewable filing by the FDA, the ANDA or 505(b)(2) applicant must 
then, within 20 days, provide notice to the NDA holder and patent owner stating that the application has been submitted and providing the factual and legal 
basis for the applicant’s opinion that the patent is invalid or not infringed. The NDA holder or patent owner may file suit against the ANDA or 505(b)(2) 
applicant for patent infringement. If this is done within 45 days of receiving notice of the Paragraph IV certification, a one-time, 30-month stay of the 
FDA’s ability to approve the ANDA or 505(b)(2) application is triggered. The 30-month stay begins at the end of the NDA holder’s data exclusivity 
period, or, if data exclusivity has expired, on the date that the patent holder is notified. The FDA may approve the proposed product before the expiration of 
the 30-month stay if a court finds the patent invalid or not infringed, or if the court shortens the period because the parties have failed to cooperate in 
expediting the litigation.

 
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Orphan Drug Act
Under the Orphan Drug Act, the FDA may designate drugs or biologics for relatively small patient populations as orphan drugs. FDA grants orphan 
drug designation to drugs intended to treat a rare disease or condition, which is one that affects fewer than 200,000 individuals in the U.S., or more than 
200,000 individuals, but for which there is no reasonable expectation that the cost of developing the product and making it available in the U.S. for the 
disease or condition will be recovered from U.S. sales of the product. Orphan drug designation does not shorten the duration of the regulatory review 
process or lower the approval standards, but can provide important benefits, including consultation with the FDA. If a product is approved for its orphan 
designated use, it may be entitled to Orphan Drug Exclusivity (“ODE”), which blocks the FDA from approving for seven years any other application for a 
product that is the same drug for the same indication. ODE does not prevent approval of another sponsor’s application for different indications or uses of 
the same drug, or for different drugs for the same indication.
 
Sales and Marketing
We are subject to various U.S. federal and state laws pertaining to healthcare fraud and abuse, including anti-kickback laws and false claims laws. 
Anti-kickback laws make it illegal for a prescription drug manufacturer to solicit, offer, receive, or pay any remuneration in exchange for, or to induce, the 
referral of business, including the purchase or prescription of a particular drug. Due to the broad scope of the U.S. statutory provisions, the general absence 
of guidance in the form of regulations, and few court decisions addressing industry practices, it is possible that our practices might be challenged under 
anti-kickback or similar laws. False claims laws prohibit anyone from knowingly and willingly presenting, or causing to be presented, for payment to third-
party payers (including Medicare and Medicaid) claims for reimbursed drugs or services that are false or fraudulent, claims for items or services not 
provided as claimed or claims for medically unnecessary items or services. Activities relating to the sale and marketing of our products may be subject to 
scrutiny under these laws. Violations of fraud and abuse laws may be punishable by criminal and/or civil sanctions, including fines and civil monetary 
penalties, as well as the possibility of exclusion from federal healthcare programs (including Medicare and Medicaid). In addition, federal and state 
authorities are paying increased attention to enforcement of these laws within the pharmaceutical industry and private individuals have been active in 
alleging violations of the laws and bringing suits on behalf of the U.S. government under the False Claims Act. If we were subject to allegations 
concerning, or were convicted of violating, these laws, our business could be harmed. See “Item 1A—Risk Factors” in this Annual Report and specifically 
those sections entitled “If there are changes in, or we fail to comply with, the extensive legal and regulatory requirements affecting the healthcare industry, 
we could be subject to investigations, litigation, costs, penalties and business losses,” “Revenues generated by sales of our products depend, in part, on the 
availability from third-party payers of reimbursement for our products and the extent of cost-sharing arrangements for patients (e.g., patient co-payment, 
co-insurance, deductible obligations) and cost-control measures imposed, and any reductions in payment rate or reimbursement or increases in our or in 
patients’ financial obligation to payers could result in decreased sales of our products and/or decreased revenues” and “The clinical study or commercial 
use of our products may cause unintended side effects or adverse reactions, or incidents of misuse may occur, which could adversely affect our products, 
business and share price.”
Laws and regulations have been enacted by the U.S. federal government and various states to regulate the sales and marketing practices of 
pharmaceutical manufacturers. The laws and regulations generally limit financial interactions between manufacturers and healthcare providers and require 
disclosure to the government and public of such interactions. The laws include federal “sunshine”, or open payments, provisions enacted in 2010 as part of 
the comprehensive federal healthcare reform legislation and supplemented as part of the Substance Use-Disorder Prevention that Promotes Opioid 
Recovery and Treatment for Patients and Communities Act. Such provisions apply to pharmaceutical manufacturers with products reimbursed under 
certain government programs and require those manufacturers to disclose annually to the federal government (for re-disclosure to the public) certain 
payments made to, or at the request of, or on behalf of, physicians or to teaching hospitals and certain payments made to physicians assistants, nurse 
practitioners, clinical nurse specialists, certified registered nurse anesthetists and certified nurse-midwives. Certain state laws also require disclosure of 
pharmaceutical pricing information and marketing expenditures. Given the ambiguity found in many of these laws and their implementation, our reporting 
actions could be subject to the penalty provisions of the pertinent U.S. federal and state laws and regulations.
Pricing and Reimbursement
United States
In the U.S., sales of our products, including those sold by our licensees, and our ability to generate revenues on such sales are dependent, in 
significant part, on the availability and level of reimbursement from third-party payers such as state and federal governments, including Medicare and 
Medicaid, managed care providers and private insurance plans. Third-party payers are increasingly challenging the prices charged for medical products and 
examining the medical necessity and cost-effectiveness of medical products, in addition to their safety and efficacy.

 
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Medicaid is a joint federal and state program that is administered by the states for low-income and disabled beneficiaries. Under the Medicaid rebate 
program, we are required to pay a rebate for each unit of product reimbursed by the state Medicaid programs. The amount of the rebate for each product is 
set by law as the greater of 23.1% of average manufacturer price (“AMP”) or the difference between AMP and the best price available from us to any 
commercial or non-federal governmental customer. The rebate amount must be adjusted upward where the AMP for a product’s first full quarter of sales, 
when adjusted for increases in the Consumer Price Index—Urban, is less than the AMP for the current quarter, with this difference being the amount by 
which the rebate is adjusted upwards. The rebate amount is required to be recomputed each quarter based on our report of current AMP and best price for 
each of our products to the Centers for Medicare & Medicaid Services (“CMS”). The terms of our participation in the rebate program impose a requirement 
on us to report revisions to AMP or best price within a period not to exceed 12 quarters from the quarter in which the data was originally due. Any such 
revisions could have the impact of increasing or decreasing our rebate liability for prior quarters, depending on the direction of the revision. In addition, if 
we were found to have knowingly submitted false information to the government, the statute provides for civil monetary penalties per item of false 
information in addition to other penalties available to the government. 
Medicare is a federal program that is administered by the federal government that covers individuals age 65 and over as well as those with certain 
disabilities. Medicare Part B pays physicians who administer our products under a payment methodology using average sales price (“ASP”) information. 
Manufacturers, including us, are required to provide ASP information to CMS on a quarterly basis. This information is used to compute Medicare payment 
rates, with rates for Medicare Part B drugs outside the hospital outpatient setting and in the hospital outpatient setting consisting of ASP plus a specified 
percentage. These rates are adjusted periodically. If a manufacturer is found to have made a misrepresentation in the reporting of ASP, the statute provides 
for civil monetary penalties for each misrepresentation and for each day in which the misrepresentation was applied.
Medicare Part D provides coverage to enrolled Medicare patients for self-administered drugs (i.e., drugs that do not need to be injected or otherwise 
administered by a physician) and certain physician-administered drugs reimbursed under a pharmacy benefit. Medicare Part D also covers the prescription 
drug benefit for dual eligible beneficiaries. Medicare Part D is administered by private prescription drug plans approved by the U.S. government and each 
drug plan establishes its own Medicare Part D formulary for prescription drug coverage and pricing, which the drug plan may modify from time-to-time. 
The prescription drug plans negotiate pricing with manufacturers and may condition formulary placement on the availability of manufacturer discounts. 
The Medicare Part D benefit has distinct phases, where the share of drug costs paid by Medicare Part D enrollees, the Medicare Part D prescription drug 
plan, drug manufacturers and Medicare varies. Prior to 2025, the phases consisted of the deductible phase, the initial coverage phase, the coverage gap and 
the catastrophic coverage phase and, except for dual eligible Medicare Part D beneficiaries who qualified for low-income subsidies, drug manufacturers, 
including us, were required to provide a seventy percent (70%) discount on our brand name prescription drugs utilized by Medicare Part D beneficiaries 
when those beneficiaries reached the coverage gap in their drug benefits. The Inflation Reduction Act of 2022 (the “Inflation Reduction Act”) made 
substantial changes to the Medicare Part D benefit design and replaced the manufacturer coverage-gap discount program with a new manufacturer discount 
program that took effect in January 2025. Under the new discount program, the Medicare Part D benefit phases consist of the deductible phase, the 
coverage phase and the catastrophic coverage phase, and drug manufacturers must provide a ten percent (10%) discount on their brand name prescription 
drugs utilized by Medicare Part D beneficiaries during the initial coverage phase and a twenty percent (20%) discount during the catastrophic coverage 
phase. For manufacturers that meet the definition of a “specified manufacturer,” the Inflation Reduction Act provides for Medicare Part D discounts to be 
phased in over time, starting with a one percent (1%) discount in the initial coverage phase and a one percent (1%) discount in the catastrophic coverage 
phase in 2025. These discount amounts increase each year, stepping up to a ten percent (10%) discount in the initial coverage phase in 2029 and a twenty 
percent (20%) discount in the catastrophic coverage phase in 2031. Alkermes meets the criteria of a “specified manufacturer” and, therefore, will follow the 
phase-in schedule for discounts to the Medicare Part D program.
Federal law also requires that any company that participates in the Medicaid Drug Rebate Program (“MDRP”) also participate in the Public Health 
Services’ (including the Indian Health Services, “PHS”) pharmaceutical pricing program (the “340B program”), in order for federal funds to be available 
for the manufacturer’s drugs under Medicaid and Medicare Part B. The 340B program, which is administered by the Health Resources and Services 
Administration (“HRSA”), requires participating manufacturers to agree to charge statutorily defined covered entities no more than the 340B “ceiling 
price” for the manufacturer’s covered drugs. These 340B covered entities include certain qualifying community health clinics, a variety of entities that 
receive health services grants from the Public Health Service, and multiple categories of hospitals, including children’s hospitals, critical access hospitals, 
free standing cancer hospitals and hospitals that serve a disproportionate share of low-income patients. The 340B ceiling price is calculated using a 
statutory formula, which is based on the average manufacturer price and rebate amount for the covered outpatient drug as calculated under the MDRP. A 
regulation regarding the calculation of the 340B ceiling price and the imposition of civil monetary penalties on manufacturers that knowingly and 
intentionally overcharge covered entities became effective on January 1, 2019. The scope and implementation of the 340B program continue to be the 
subject of legislative and regulatory interest and ongoing litigation, the outcomes of which are difficult to predict.

 
26
We also make our products available for purchase by authorized users of the Federal Supply Schedule (“FSS”) of the General Services 
Administration pursuant to our FSS contract with the Department of Veterans Affairs. Under the Veterans Health Care Act of 1992 (the “VHC Act”), we 
are required to offer deeply discounted FSS contract pricing to four federal agencies: the Department of Veterans Affairs; the Department of Defense; the 
Coast Guard; and the PHS, in order for federal funding to be made available for reimbursement of any of our products by such federal agencies and certain 
federal grantees. Coverage under Medicaid, the Medicare Part B program and the PHS pharmaceutical pricing program is also conditioned upon FSS 
participation. FSS pricing is negotiated periodically with the Department of Veterans Affairs. FSS pricing is intended not to exceed the price that we charge 
our most-favored, non-federal customer for a product. In addition, prices for drugs purchased by the Department of Veterans Affairs, Department of 
Defense (including drugs purchased by military personnel and dependents through the Tricare Retail Pharmacy (“Tricare”) program), Coast Guard and 
PHS are subject to a cap on pricing equal to 76% of the non-federal average manufacturer price (“non-FAMP”). An additional discount applies if non-
FAMP increases more than inflation (measured by the Consumer Price Index—Urban). In addition, if we are found to have knowingly submitted false 
information to the government, the VHC Act provides for civil monetary penalties per false item of information in addition to other penalties available to 
the government.
In addition, in January 2016, CMS released the final Medicaid covered outpatient drug regulation, which became effective in April 2016. This 
regulation implements those changes made by the Patient Protection and Affordable Care Act (the “PPACA”) to the Medicaid drug rebate statute in 2010 
and addresses a number of other issues with respect to the Medicaid program, including, but not limited to, the eligibility and calculation methodologies for 
AMP and best price, and the expansion of Medicaid rebate liability to include Medicaid managed care organizations. The final Medicaid covered outpatient 
drug regulation established two calculation methodologies for AMP: one for drugs generally dispensed through retail community pharmacies (“RCP”) and 
one for so-called “5i drugs” (inhaled, infused, instilled, implanted or injectable drugs) “not generally dispensed” through RCPs. The regulation further 
made clear that 5i drugs would qualify as “not generally dispensed” and, therefore, able to use the alternative AMP calculation, if not more than thirty 
percent (30%) of their sales were to RCPs or to wholesalers for RCPs. The primary difference between the two AMP calculations is the requirement to 
include in AMP, for those qualifying 5i drugs not generally dispensed through RCPs, certain payments, rebates and discounts related to sales to non-RCPs; 
such inclusion often leads to a lower AMP. The decision of which AMP calculation a product is eligible to use must be made and applied on a monthly 
basis based on the percentage of sales of such product to RCPs or to wholesalers for RCPs.
In September 2024, CMS released a final rule titled “Medicaid Program: Misclassification of Drugs, Program Administration and Program Integrity 
Updates Under the Medicaid Drug Rebate Program,” the provisions of which generally took effect in November 2024. The rule includes several provisions 
affecting manufacturers that participate in the MDRP, including, but not limited to, addressing manufacturer misclassification of their products in reports 
required by the MDRP, imposing a 12-quarter deadline for manufacturer disputes or audits of state rebate invoices, and modifying the definition of 
“covered outpatient drugs” for which manufacturers are required to pay rebates to include certain drugs administered in inpatient settings where the drug is 
part of an inclusive payment, such inclusive payment includes an amount attributable to the drug and the number of units of the drug administered to the 
patient, and where the amount paid that is attributable to the drug is based on a reimbursement methodology included in the applicable state plan.
U.S. federal and state governments regularly consider reforming healthcare coverage and lessening healthcare costs. Such reforms may include price 
controls, value-based pricing and changes to the coverage and reimbursement of our products, which may have a significant impact on our business. In 
August 2022, the Inflation Reduction Act was signed into law. The Inflation Reduction Act includes several provisions that will impact our business to 
varying degrees, including those that impose new manufacturer financial liability on all drugs in Medicare Part D beginning in 2025, allow the U.S. 
government to negotiate prices for some drugs covered under Medicare Part D beginning in 2026 and Medicare Part B beginning in 2028, and require 
companies to pay rebates to Medicare for drug prices that increase faster than inflation. In addition, emphasis on managed care in the U.S. has increased 
and we expect will continue to increase the pressure on drug pricing. Private insurers regularly seek to manage drug cost and utilization by implementing 
coverage and reimbursement limitations through means including, but not limited to, formularies, increased out of pocket obligations and various prior 
authorization requirements. Even if favorable coverage and reimbursement status is attained for one or more products for which we have received 
regulatory approval, less favorable coverage policies and reimbursement rates may be implemented in the future.
Outside the United States
Within the EU, products are paid for by a variety of payers, with governments being the primary source of payment. Governments may determine or 
influence reimbursement of products. Governments may also set prices or otherwise regulate pricing. Negotiating prices with governmental authorities can 
delay commercialization of products. Governments may use a variety of cost-containment measures to control the cost of products, including price cuts, 
mandatory rebates, value-based pricing and reference pricing (i.e., referencing prices in other countries and using those reference prices to set a price). 
Recent budgetary pressures in many EU countries are causing governments to consider or implement various cost-containment measures, such as price 
freezes, increased price cuts and rebates, and expanded generic substitution and patient cost-sharing. If budget pressures continue, governments may 
implement additional cost-containment measures.

 
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Other Regulations
Foreign Corrupt Practices Act: We are subject to the U.S. Foreign Corrupt Practices Act (the “FCPA”) and its Irish equivalent, which prohibits 
corporations and their representatives from paying, offering to pay, promising, authorizing, or making payments of anything of value to any foreign 
government official, government staff member, political party, or political candidate in an attempt to obtain or retain business or to otherwise influence a 
person working in an official capacity. In many countries, the healthcare professionals with whom we regularly interact may meet the FCPA’s definition of 
a foreign government official. The FCPA also requires public companies to make and keep books and records that accurately and fairly reflect their 
transactions and to devise and maintain an adequate system of internal accounting controls.
Environmental, Health and Safety Laws: Our operations are subject to complex and increasingly stringent environmental, health and safety laws and 
regulations in the countries where we operate and, in particular, where we have manufacturing facilities, namely the U.S. and Ireland. Environmental and 
health and safety authorities in the relevant jurisdictions, including the Environmental Protection Agency and the Occupational Safety and Health 
Administration in the U.S. and the Environmental Protection Agency and the Health and Safety Authority in Ireland, administer laws which regulate, 
among other matters, the emission of pollutants into the air (including the workplace), the discharge of pollutants into bodies of water, the storage, use, 
handling and disposal of hazardous substances, the exposure of persons to hazardous substances, and the general health, safety and welfare of employees 
and members of the public. In certain cases, these laws and regulations may impose strict liability for pollution of the environment and contamination 
resulting from spills, disposals or other releases of hazardous substances or waste and/or any migration of such hazardous substances or waste. Costs, 
damages and/or fines may result from the presence, investigation and remediation of contamination at properties currently or formerly owned, leased or 
operated by us and/or off-site locations, including where we have arranged for the disposal of hazardous substances or waste. In addition, we may be 
subject to third-party claims, including for natural resource damages, personal injury and property damage, in connection with such contamination.
The General Data Protection Regulation (“GDPR”): The GDPR became effective in May 2018 and replaced the previous EU Data Protection 
Directive (95/46). The GDPR, which governs the processing of personal data (including personal health data), applies to the Company and any of its 
subsidiaries that are established in the EU to the extent that they process personal data as well as any of its subsidiaries that are established outside the EU 
to the extent that they process personal data relating to EU residents for certain purposes, including any such data relating to clinical trial participants in the 
EU. The GDPR imposes significant obligations on controllers and processors of personal data, including high standards for obtaining consent from 
individuals to process their personal data, robust notification requirements to individuals about the processing of their personal data, a strong individual 
data rights regime, mandatory data breach notifications, limitations on the retention of personal data, stringent requirements pertaining to health data, and 
strict rules and restrictions on the transfer of personal data outside of the EU, including to the U.S. The GDPR also imposes additional obligations on, and 
required contractual provisions to be included in, contracts between companies subject to the GDPR and their third-party processors that relate to the 
processing of personal data. The GDPR allows EU member states to make additional laws and regulations in order to introduce further conditions, 
including limitations, with regard to the processing of genetic, biometric or health data.
Other Laws: We are subject to a variety of financial disclosures, securities trading regulations and U.S. and Irish or EU governmental regulations as 
an Irish-incorporated company publicly-listed in the U.S., including laws relating to the oversight activities of the SEC, the Irish Companies Act 2014, and 
the regulations of the Nasdaq Stock Market (“Nasdaq”), on which our shares are traded. We are also subject to various laws, regulations and 
recommendations relating to safe working conditions, laboratory practices, the experimental use of animals, and the purchase, storage, movement, import 
and export and use and environmental matters, including disposal of hazardous or potentially hazardous substances used in connection with our research 
work.
Human Capital Resources
As a global biopharmaceutical company focused on developing innovative medicines in the field of neuroscience, we have built, and continue to 
devote significant resources to further develop and enhance, a comprehensive cross-functional infrastructure designed to support product development from 
discovery through commercialization and lifecycle management. We seek to attract, hire, develop, recognize and retain qualified and highly skilled 
employees with experience in areas such as R&D, including early discovery, medicinal chemistry, translational medicine, formulation development, and 
clinical trials operations capabilities; IP prosecution, enforcement and defense; medical affairs; manufacturing operations; U.S. federal and state 
government affairs; sales and marketing; and market access, among other areas. Competition for such personnel in our industry and the geographic regions 
in which we operate is intense, with numerous companies also developing, launching or marketing products, including products against which our products 
directly compete. We are committed to supporting our employees’ well-being in a transparent, diverse, inclusive, and collaborative environment and to 
providing them with access to training, support and resources intended to help them succeed professionally, while balancing their professional and personal 
lives.

 
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As of February 7, 2025, we had approximately 1,800 full time employees, of which approximately 1,700 were based in the U.S. and 100 were based 
in Ireland. Our 2024 global voluntary attrition rate of 9.6% was below industry benchmarks. None of our employees are covered by a collective bargaining 
agreement, and we consider our relations with our employees to be good.
We are an equal opportunity employer and fundamentally committed to creating and maintaining a work environment in which employees are 
treated with respect and dignity. All human resources policies, practices and actions related to hiring, promotion, compensation, benefits and termination 
are administered in accordance with the principles of equal employment opportunity and other legitimate criteria without regard to race, color, religion, sex, 
sexual orientation, gender expression or identity, ethnicity, national origin, ancestry, age, mental or physical disability, genetic information, any veteran 
status, any military status or application for military service, or membership in any other category protected under applicable laws. 
In recognition of the value of our employees and their important contributions to the achievement of our business objectives, we offer market-
competitive comprehensive total rewards packages, including bonus opportunities at all levels tied to individual and company performance, and for 
employees at certain levels, company equity opportunities. We are committed to designing and managing our pay programs and decisions to support 
equitable pay for all employees. We have established our compensation programs based on market and benchmark data and strive to pay all employees 
equitably, taking into consideration factors such as their role, skills, abilities and relevant experience. We routinely monitor our pay programs in order to 
respond to market trends and maintain equity within our workforce. We offer our employees healthcare and retirement savings plan benefits, paid time off, 
tuition reimbursement and other benefits designed to support healthy lifestyle choices, financial well-being and work-life balance. 
In support of our business, we seek to cultivate a work environment that reflects collaboration, respect for each voice, and unwavering commitment, 
and strengthens the sense of belonging among our employees. Reflecting the needs of our employees, we have established a global steering committee, 
comprised of representatives from all of our locations (including field-based employees), focused on creating connections, fostering conversations, and 
helping to support alignment of our efforts across the range of perspectives within our organization. We have collaborated with our employees to create 
five employee resource groups, or ERGs: Limitless, a network to support people impacted by disability or illness; MOSAIC, a multicultural network; 
Operation Salute, a network to support active duty military members, veterans and their families; Pride@Work, an LGBTQ+ and allies network; and 
Women Inspired Network (WIN), a women’s network. These ERGs, which are open to all employees, share a common purpose of supporting and 
enhancing the inclusiveness of our company culture and providing opportunities for professional development, networking, learning and building deeper 
connections within Alkermes.
We encourage active employee engagement to help ensure that employees feel part of our mission and that they have a voice in the Alkermes 
community. Since 2017, we have conducted periodic employee engagement surveys to understand employee sentiment regarding, and satisfaction with, 
their work and experience at Alkermes, and have used, and plan to continue to use, the data collected to help inform and evolve our human capital 
management strategy and initiatives. We survey employees at least annually, which allows our employees to share their insights on a regular basis and 
provides us with opportunities to regularly assess and address employee feedback. As many of our office-based employees have adapted to a hybrid work 
model, we have continued to implement our expanded employee communications strategies to keep all employees connected and informed. 
We are committed to the professional growth and development of our employees. We conduct a comprehensive on-boarding experience that 
connects newly hired employees to our business, values, culture, and people. We encourage and support our employees in their adoption of Individual 
Development Plans designed to identify professional development and growth opportunities to help support their career aspirations. We frequently offer 
Company-hosted trainings that cover topics including performance management, problem-solving, leadership development, diversity, communication and 
mentorship, and as appropriate, more specialized skills-based programs. We also provide all employees access to our LinkedIn Learning platform, which 
provides on-demand learning opportunities. 
We ask our employees to help us promote and sustain workplace environments that are safe, productive and protective of the health and well-being 
of our people and in compliance with applicable laws, rules and regulations. We maintain extensive corporate environmental, health, safety and security 
policies, adhere to all health and safety standards set by regulators in the locations in which we operate, and routinely assess workplace risks, conduct 
employee trainings and monitor our sites to reduce the risk of workplace accidents. In 2024, employee health, safety and wellness continued to be of 
particular focus and importance for the Company. 

 
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Available Information and Website Disclosure
Our principal executive offices are located at Connaught House, 1 Burlington Road, Dublin 4, Ireland D04 C5Y6. Our telephone number is +353-1-
772-8000 and our website address is www.alkermes.com. Information found on, or accessible through, our website is not incorporated into, and does not 
form a part of, this Annual Report. We make available free of charge through the Investors section of our website our Annual Reports on Form 10-K, 
Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and all amendments to those reports as soon as reasonably practicable after such material is 
electronically filed with, or furnished to, the SEC. We also make available on the Corporate Governance page of the Investors section of our website at 
www.alkermes.com (i) the charters for the standing committees of our board of directors, including the audit and risk committee, compensation committee, 
and nominating and corporate governance committee, and (ii) our Code of Business Conduct and Ethics governing our directors, officers and employees. 
We intend to disclose on our website any amendments to, or waivers from, our Code of Business Conduct and Ethics that are required to be disclosed 
pursuant to the rules of the SEC. 
From time to time, we may use our website to distribute material information. Our financial and other material information is routinely posted to and 
accessible on the Investors section of our website, available at www.alkermes.com. Investors are encouraged to review the Investors section of our website 
because we may post material information on that site that is not otherwise disseminated by us. 

 
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Item 1A. Risk Factors 
You should consider carefully the risks described below in addition to the financial and other information contained in this Annual Report, including our 
financial statements and related notes thereto and the matters addressed under the caption “Cautionary Note Concerning Forward-Looking Statements,” 
and in our other public filings with the SEC. If any events described by the following risks actually occur, such events could materially adversely affect our 
business, financial condition, cash flows or results of operations. This could cause the market price of our ordinary shares to materially decline. The risks 
described below are not intended to be exhaustive and are not the only risks that we face. New risk factors can emerge from time to time, and it is not 
possible to predict the impact that any factor or combination of factors may have on our business, prospects, financial condition and results of operations.
Risks Related to Our Business and Our Industry
We receive substantial revenue from our key proprietary products and our success depends on our ability to successfully manufacture and 
commercialize such products. 
Sales of our proprietary products comprise a significant portion of our revenues. We developed and exclusively manufacture VIVITROL for the 
treatment of adults with alcohol dependence and opioid dependence, ARISTADA for the treatment of adults with schizophrenia, ARISTADA INITIO for 
initiation onto ARISTADA for the treatment of adults with schizophrenia, and LYBALVI for the treatment of adults with schizophrenia and for the 
treatment of adults with bipolar I disorder, and we exclusively commercialize these products in the U.S. Our success depends in large part on our ability to 
continue to successfully manufacture and commercialize such products in the complex markets into which they are sold. Any significant negative 
developments relating to these products could have a material adverse effect on our revenues from these products and, in turn, on our business, financial 
condition, cash flows and results of operations and the market price of our ordinary shares. 
We face competition in the biopharmaceutical industry. 
We face intense competition in the development, manufacture, marketing and commercialization of our products from many and varied sources, 
such as research institutions and other biopharmaceutical companies, including companies with similar technologies or medicines, and manufacturers of 
generic drugs. Some of these competitors are also our licensees, who control the commercialization of products from which we receive manufacturing 
and/or royalty revenues. For example, our proprietary products ARISTADA and LYBALVI compete with the long-acting INVEGA products and 
RISPERDAL CONSTA, products from which we receive manufacturing and/or royalty revenues. 
The biopharmaceutical industry is characterized by intensive research, development and commercialization efforts and rapid and significant 
technological change. In many cases, there are already products on the market that may be in direct competition with our commercial products or products 
in development. In addition, there are many companies with which we and our licensees compete that are developing generic versions of our products, or 
products with similar technologies to ours or for use in similar indications, and many of these competitors are larger and have significantly greater 
financial, operational and other resources than we do. Smaller or earlier stage companies may also prove to be significant competitors, whether through 
focused or more abbreviated development programs or collaborative arrangements with large, established companies. Some of the products being 
developed by our competitors are being designed to work differently than our products and may prove to be safer or more effective than our products or 
achieve regulatory approval and be commercialized earlier than our products, which may render our products or technologies obsolete or noncompetitive or 
make it more challenging for us to successfully commercialize our products. For a detailed discussion of the competition that we face with respect to our 
current marketed products, technologies and product indications, please see the section entitled “Competition” in “Item 1—Business” in this Annual 
Report. If we are unable to compete successfully in the highly competitive biopharmaceutical industry, our business, financial condition, cash flows and 
results of operations could be materially adversely affected. 
Our revenues from sales of our products may decrease or grow at a slower than expected rate due to many factors.
We cannot be assured that our products will be, or will continue to be, accepted in the U.S. or markets outside the U.S. or that we will be able to 
maintain or increase sales of our products. Factors that may cause revenues from our products to grow at a slower than expected rate, decrease or cease all 
together, include, among others:
•
the perception of physicians and other members of the healthcare community as to our products’ safety and efficacy relative to that of current 
or future competing products and the willingness or ability of physicians and other members of the healthcare community to prescribe, 
dispense and/or administer, and patients to use, our products;
•
unfavorable publicity concerning us, our licensees, our products, similar classes of drugs or our industry generally;

 
31
•
the cost-effectiveness of our products and reimbursement policies of government and third-party payers that may impact use of our products; 
•
the cost and availability of raw materials necessary for the manufacture of our products; 
•
the successful manufacture of our products on a timely and cost-effective basis; 
•
the size of the markets for our products, and patient and physician satisfaction with our products; 
•
significant changes in the competitive landscape for our products, including any approvals of generic versions of our products or other 
branded products that may compete with our products;
•
adverse event information relating to our products or to similar classes of drugs; 
•
changes to the product labels of our products, or of products within the same drug classes, to add new significant warnings or restrictions on 
use; 
•
our ability to engage third parties to manufacture, package and/or distribute our products on acceptable terms, or at all; 
•
the unfavorable outcome of investigations, arbitrations, litigation or other legal proceedings, including government requests for information 
related to one or more of our products, securities litigation, IP litigation, including so-called “Paragraph IV” litigation relating to products 
from which we receive revenue, litigation or other proceedings before the USPTO Patent Trial and Appeal Board (the “PTAB”) or its 
equivalent in other jurisdictions outside of the U.S., and any other litigation or arbitration related to any of our products; 
•
regulatory developments and actions related to the manufacture, commercialization or continued use of our products, including FDA actions 
such as the issuance of a REMS or warning letter, or conduct of an audit by the FDA or another regulatory authority in which a 
manufacturing or quality deficiency is identified; 
•
the extent and effectiveness of the sales, marketing and distribution support for our products, including the size of our and our licensees’ sales 
forces and investments in marketing strategies, and our and our licensees’ decisions as to the timing and volume of product orders and 
shipments, the timing of product launches, and product pricing and discounting; 
•
disputes with our licensees relating to the use of our technology in, and marketing and sale of, products from which we received, or currently 
receive, manufacturing and/or royalty revenue and the amounts and duration of payments to be made with respect to such products; 
•
exchange rate valuations and fluctuations; 
•
U.S. and global political and administrative changes, conflicts and/or instability, public health matters, economic conditions and/or any 
related changes in applicable laws and regulations or federal and state policy efforts, that may impact resources and markets for our products 
or the systems and environments in which we operate; and
•
any other material adverse developments with respect to the commercialization of our products.
Revenues generated by sales of our products depend, in part, on the availability from third-party payers of reimbursement for our products and the 
extent of cost-sharing arrangements for patients (e.g., patient co-payment, co-insurance, deductible obligations) and cost-control measures imposed, 
and any reductions in payment rate or reimbursement or increases in our or in patients’ financial obligation to payers could result in decreased sales of 
our products and/or decreased revenues. 
In both U.S. and non-U.S. markets, sales of our products depend, in part, on adequate coverage, pricing and reimbursement from third-party payers 
such as state and federal governments, including Medicare and Medicaid in the U.S. and similar programs in other countries, managed care providers and 
private insurance plans. Deterioration in the timeliness, certainty and amount of reimbursement for our products, the existence of barriers to coverage of 
our products (such as prior authorization, criteria for use or other requirements), increases in our financial obligation to payers, including government 
payers, limitations by healthcare providers on how much, or under what circumstances, they will prescribe or administer our products or unwillingness by 
patients to pay any required co-payments, or deductible amounts, could reduce the use of, and revenues generated from, our products and could have a 
material adverse effect on our business, financial condition, cash flows and results of operations. 
The availability of government and private reimbursement for our products and coverage restrictions that may be imposed for our products are 
uncertain, as is the amount for which our products will be reimbursed. Pricing and reimbursement for our products may be adversely affected by a number 
of factors, including: changes in, and implementation of, federal or state government regulations or private third-party payors’ reimbursement policies; 
pressure by employers on private health insurance plans to reduce costs; and consolidation and increasing assertiveness of payors and pharmacy benefit 
managers (“PBMs”) seeking price discounts or 

 
32
rebates in connection with the placement of our products on their formularies and, in some cases, the imposition of restrictions on access or coverage of 
particular drugs or pricing determined based on perceived value. We cannot predict the availability, amount, or consistency of reimbursement for, or the 
prevalence and extent of other access barriers to, our products.
In the U.S., federal and state legislatures, health agencies and third-party payers continue to focus on containing the cost of healthcare. The Inflation 
Reduction Act includes several provisions that will impact our business to varying degrees, including the Drug Price Negotiation Program applicable to 
Medicare Parts D and B and those provisions that impose new manufacturer financial liability on all drugs in Medicare Part D beginning in 2025, and 
require companies to pay rebates to Medicare for drug prices that increase faster than inflation. The Drug Price Negotiation Program is subject to ongoing 
litigation, the outcome of which is difficult to predict.
In addition, economic pressure on state budgets may result in states increasingly seeking to achieve budget savings through mechanisms that limit 
coverage or payment for drugs, including but not limited to price control initiatives, discounts and other pricing-related actions. State Medicaid programs 
are increasingly requesting that manufacturers pay supplemental rebates and are requiring prior authorization by the state program for use of any drug. 
Managed care organizations continue to seek price discounts and, in some cases, to impose restrictions on the coverage of particular drugs. U.S. 
government efforts to reduce Medicaid expenses may lead to increased use of managed care organizations by Medicaid programs. This may result in 
managed care organizations influencing prescription decisions for a larger segment of the population and a corresponding constraint on prices and 
reimbursement for our products.
Furthermore, we may face uncertainties as a result of efforts to repeal, substantially modify or invalidate some or all of the provisions of the 
PPACA, the Inflation Reduction Act and other legislation that impacts us, whether by legislative means or through litigation, and further potential reforms 
to government negotiation or regulation of drug pricing. The PPACA significantly expanded coverage of mental health and substance use disorders and 
provided federal parity protections to such coverage benefits. If efforts to reform or repeal PPACA, or to implement differently certain of its provisions, are 
successful, such efforts and proposed legislation or other future federal or state legislative or administrative changes relating to healthcare reform and drug 
pricing could adversely affect our business and financial results. Additional discounts, rebates, coverage or plan changes, restrictions or exclusions as 
described above could have a material adverse effect on sales of our affected products. Our failure to obtain or maintain adequate coverage, pricing or 
reimbursement for our products could have an adverse effect on our business, reputation, revenue, results of operations, financial condition and cash flows.
Many payors continue to adopt benefit plan changes that shift a greater portion of prescription costs to patients, including more limited benefit plan 
designs, higher patient co-pay or co-insurance obligations and limitations on patients' use of commercial manufacturer co-pay payment assistance programs 
(including through co-pay accumulator adjustment or maximization programs). Significant consolidation in the health insurance industry has resulted in a 
few large insurers and pharmacy benefit managers exerting greater pressure in pricing and usage negotiations with drug manufacturers, significantly 
increasing discounts and rebates required of manufacturers and limiting patient access and usage. In addition, pharmacy benefit managers have merged 
with or acquired specialty and mail order pharmacies and provider groups. This consolidation, and any further consolidation, among insurers, pharmacy 
benefit managers, other entities in the pharmaceutical supply chain and other payors has increased and will increase, respectively, the negotiating leverage 
such entities have over us and other drug manufacturers.
In the U.S., to help patients afford our approved products, we may utilize programs to assist them, including patient assistance programs and co-pay 
programs for eligible patients. Government enforcement agencies have shown increased interest in pharmaceutical companies' product and patient 
assistance programs, including reimbursement support services, and a number of investigations into these programs have resulted in significant civil and 
criminal settlements. Our payment support programs could become the target of similar actions. In addition, in November 2013, CMS issued guidance to 
the issuers of qualified health plans sold through the PPACA’s marketplaces encouraging such plans to reject patient cost-sharing support from third parties 
and indicating that CMS intends to monitor the provision of such support and may take regulatory action to limit it in the future. CMS subsequently issued 
a rule requiring individual market qualified health plans to accept third-party premium and cost-sharing payments from certain government-related entities. 
In September 2014, the Office of Inspector General of the U.S. Department of Health and Human Services issued a Special Advisory Bulletin warning 
manufacturers that they may be subject to sanctions under the federal anti-kickback statute and/or civil monetary penalty laws if they do not take 
appropriate steps to exclude Part D beneficiaries from using co-pay programs. It is possible that changes in insurer policies regarding co-pay programs 
and/or the introduction and enactment of new legislation or regulatory action could restrict or otherwise negatively affect these patient support programs, 
which could result in fewer patients using affected products, and therefore could have a material adverse effect on our sales, business, and financial 
condition.

 
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If there are changes in, or we fail to comply with, the extensive legal and regulatory requirements affecting the healthcare industry, we could be subject 
to investigations, litigation, costs, penalties and business losses. 
Our activities, and the activities of our licensees and third-party providers, are subject to extensive government regulation. Government regulation 
by various national, state and local agencies includes detailed inspections of, and controls over, research and laboratory procedures, clinical investigations, 
product approvals and manufacturing, marketing and promotion, adverse event reporting, sampling, distribution, recordkeeping, storage, and disposal 
practices, among others. Achieving and maintaining compliance with these regulations substantially increases the time, difficulty and costs incurred in 
obtaining and maintaining approvals to market newly developed and existing products. Government regulatory actions, including audits, records requests 
and inspections of manufacturing facilities, can result in delay in the release of products, seizure or recall of products, suspension or revocation of the 
authority necessary for the manufacture and sale of products, and other regulatory enforcement actions, including the levying of civil fines or criminal 
penalties, the issuance of a warning letter, or the imposition of an injunction. 
Biopharmaceutical companies have also been the target of government lawsuits and investigations alleging violations of government regulation, 
including claims asserting submission of incorrect pricing information, impermissible promotion of pharmaceutical products, improper payments intended 
to influence the referral of healthcare business, submission of false claims for government reimbursement, antitrust violations, violations related to anti-
corruption and anti-bribery laws, and violations related to environmental matters. We have been, and may continue to be, the subject of certain government 
inquiries or requests for documentation. For example, we have received a subpoena and civil investigative demands from U.S. state and federal authorities 
for documents related to VIVITROL, and have cooperated with the government in each instance. If, as a result of government requests, proceedings are 
initiated, including under the U.S. federal Anti-Kickback Statute or False Claims Act, or under state False Claims Acts or other laws, and we are found to 
have violated one or more applicable laws, we may be subject to significant liability, including without limitation, civil fines, criminal fines and penalties, 
civil damages and exclusion from U.S. federal funded healthcare programs such as Medicare and Medicaid, any of which could materially affect our 
reputation, business, financial condition, cash flows and results of operations. Conduct giving rise to such liability could also form the basis for private civil 
litigation by third-party payers or other persons allegedly harmed by such conduct. Additionally, regardless of whether or not there is merit to claims 
underlying any investigation or legal proceedings to which we are subject, or whether or not we are found as a result of such investigations or lawsuits to 
have violated any applicable laws, such lawsuits and inquiries can be expensive to defend or respond to, may divert the attention of our management and 
other resources that would otherwise be engaged in managing our business, and may further cause significant and potentially irreparable harm to our public 
reputation. While we have implemented numerous risk mitigation measures, we cannot guarantee that we, our employees, our licensees, our consultants or 
our contractors are, or will be, in compliance with all applicable laws or regulations. If we or our agents fail to comply with any of those laws or 
regulations, a range of actions could result, including the suspension or termination of clinical trials, the failure to approve a product, restrictions on sales of 
our products or our manufacturing processes, withdrawal of our products from the market, significant fines, exclusion from government healthcare 
programs or other sanctions or litigation.
Changes affecting the healthcare industry, including new laws, regulations or judicial decisions, or new interpretations of existing laws, regulations 
or decisions, related to patent protection and enforcement, access to healthcare, environmental issues or product pricing and marketing, could also 
adversely affect our revenues, our public reputation or our potential to be profitable. For example, and as discussed above, the Inflation Reduction Act 
includes several provisions that will impact our business to varying degrees, including those that impose new manufacturer financial liability on all drugs in 
Medicare Part D beginning in 2025, allow the U.S. government to negotiate prices for some drugs covered under Medicare Part B and Part D with effect 
beginning in 2026, and require companies to pay rebates to Medicare for drug prices that increase faster than inflation. Additionally, in its 2024 decision in 
Loper Bright Enterprises v. Raimondo, the U.S. Supreme Court overruled the “Chevron doctrine,” which gave deference to regulatory agencies’ statutory 
interpretations in litigation against federal government agencies, such as the FDA, where the law was ambiguous. This U.S. Supreme Court decision may 
lead to challenges of longstanding decisions and policies of the FDA, and other federal agencies, which could lead to uncertainties in the industry and 
disrupt or alter such federal agencies’ operations. Any further changes in laws, regulations or decisions or in the interpretation of existing laws, regulations 
and decisions, could have a material adverse effect on our business, financial condition, cash flows and results of operations.
We rely heavily on our licensees in the commercialization and continued development of products from which we receive revenue and, if our licensees 
are not effective, or if disputes arise in respect of our contractual arrangements, our revenues could be materially adversely affected. 
Our arrangements with licensees are critical to bringing to market and/or successfully commercializing products using our proprietary technologies 
and from which we receive manufacturing and/or royalty revenue. We rely on these licensees in various respects, including commercializing such products, 
conducting development activities with respect to new formulations or new indications for such products, and/or managing the regulatory approval process 
for such products. 

 
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We earn significant royalty revenue from sales by our licensees of our licensed products and third-party products incorporating our proprietary 
technologies. We also earn manufacturing revenues for products that we currently manufacture on behalf of other parties. The revenues we receive from 
such products depend primarily upon the success of our licensees in commercializing such products. For example, we receive substantial revenue from 
Janssen’s sales of XEPLION, INVEGA TRINZA/TREVICTA, INVEGA HAFYERA/BYANNLI and RISPERDAL CONSTA, and from Biogen’s sales of 
VUMERITY. We have no involvement in the commercialization efforts for these and other products sold by third parties from which we receive revenue 
and cannot control the extent or effectiveness of such commercialization efforts. In addition, certain of these products are currently subject to ANDA 
litigation proceedings to which we are not a party and, if such proceedings are not resolved favorably or are settled by our licensees, generic versions of 
these products could be launched and there may be an adverse impact on the commercialization of these products and therefore on the revenue that we 
receive from sales of these products.
Disputes may also arise between us and a licensee involving the ownership of technology developed under a license, the use of our technology, 
including know-how, in third-party products, the terms and amounts of royalty payments to be paid under a license, or other issues arising out of any 
licenses or other collaborative agreements. Such disputes may delay related development programs, impact commercialization or manufacturing activities 
for the related products, impact the timing or amount of revenue that we receive in respect of such products, or result in expensive arbitration, litigation or 
other dispute resolution, which may not be resolved in our favor and may adversely impact our financial condition. 
Further, certain of our license agreements may be terminated, with or without cause, or assigned in connection with a change in control or other 
event, and we cannot guarantee that any of these licensing relationships will continue or that our licensees will be able or willing to continue to perform 
their obligations, including development, commercialization or payment obligations, under such agreements. Any significant negative developments 
relating to our relationships with our licensees could have a material adverse effect on our business, financial condition, cash flows and results of 
operations and on the market price of our ordinary shares. 
For example, in November 2021 we received notice of partial termination of an exclusive license agreement with Janssen. Under this license 
agreement, we provided Janssen with rights to, and know-how, training and technical assistance in respect of, our small particle pharmaceutical compound 
technology, known as NanoCrystal technology, which was used to develop INVEGA SUSTENNA/XEPLION, INVEGA TRINZA/TREVICTA, INVEGA 
HAFYERA/BYANNLI, and CABENUVA. While we ultimately prevailed in arbitration proceedings related to, among other things, this partial termination 
and Janssen’s royalty and other obligations under the license agreement, the announcement of the partial termination, expectations regarding the loss of 
royalty revenues, actual delays in receipt of royalty revenues that resulted from such termination, and the ultimate announcement of the resumption of 
payment of such royalty revenues, caused the market price of our ordinary shares to fluctuate significantly. 
For these and other reasons that may be outside of our control, our revenues from products sold by our licensees, and any related commercial 
milestone payments, may fall below our expectations, the expectations of our licensees or those of our shareholders, which could have a material adverse 
effect on our results of operations and the market price of our ordinary shares.
Clinical trials for our products are expensive, may take several years to complete, and their outcomes are uncertain.
In order to obtain regulatory approvals for the commercial sale of any product, we or our licensees must demonstrate, through preclinical testing and 
clinical trials, that such product is safe and effective for use in humans. Designing, conducting and completing a clinical development program is often a 
lengthy, time-consuming and expensive process and the risk of a product not successfully completing full clinical development and receiving marketing 
approval is high. We have incurred, and we will continue to incur, substantial expenses for preclinical testing, clinical trials and other activities related to 
our clinical development programs. 
Our preclinical and clinical development efforts may take several years or more, varying substantially with the type, complexity, novelty and 
intended use of the product and the clinical study designs and methodologies employed, and may not be successfully completed in a timely manner or at 
all. Timelines for the initiation, conduct and completion of clinical trials may be delayed by many factors, including:
•
issues with the opening, operation or inspection of a new or ongoing clinical trial site, including those located in or near geographic areas of 
conflict or areas impacted by political, environmental, public health or economic events;
•
delays or failures of third-party CROs and other third-party service providers and clinical investigators to manage and conduct the trials, 
perform oversight of the trials, including data audit and verification procedures, or to meet expected timelines; 
•
an inability to recruit, enroll and retain clinical trial participants at the expected rate or at all, or to adequately follow participants after 
treatment; 
•
safety or tolerability issues that may arise during clinical trials; 
•
an inability to manufacture or obtain sufficient quantities of materials used for clinical trials; and

 
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•
unforeseen governmental or regulatory issues or concerns, including those of the FDA and other regulatory agencies, that may impact the 
strategies for, and design, timelines or feasibility of, our clinical development programs.
In addition, we are currently conducting and enrolling patients in clinical studies in a number of countries where our experience is more limited and 
in disease areas in which we have not previously conducted clinical trials. In these instances, we must depend on third parties, including independent 
clinical investigators, CROs and other third-party service providers, to successfully conduct our clinical trials and to audit, verify and accurately report 
results from such trials. Though we do not have much control over many aspects of such third-party activities, we are responsible for ensuring that each of 
our clinical trials is conducted in accordance with the general investigational plan and protocols for the trial. Third parties may not complete planned 
activities on schedule or conduct our trials in accordance with regulatory requirements or our stated protocols. 
The outcome of our clinical trials is uncertain. The results from preclinical testing and early clinical trials often have not predicted results of later 
clinical trials. A number of products have shown promising results in early clinical trials but subsequently failed to establish sufficient safety and/or 
efficacy data in later clinical trials to obtain necessary regulatory approvals.
If we and/or third parties fail to manage or conduct clinical trials in a timely manner or in accordance with study protocols or obligations or if a 
product fails to demonstrate clinical safety and efficacy or to possess features that may give such product a competitive commercial advantage over other 
products for the same indication, the development, approval and/or commercialization of our products may be delayed or prevented or less successful than 
anticipated, and such events could materially adversely affect our business, financial condition, cash flows and results of operations. 
Preliminary, topline or interim data from our clinical trials that we may announce, publish or report from time to time may change as more patient 
data become available or based on subsequent audit and verification procedures, and may not be indicative of final data from such trials, data from 
future trials or real-world results.
From time to time, we may announce, publish or report preliminary, topline or interim data from our clinical trials. Such data are subject to the risk 
that one or more of the clinical outcomes may materially change as patients continue progressing through the study, as patient enrollment continues and/or 
as more patient data become available, and such data may not be indicative of final data from such trials, data from future trials or real-world results. In 
addition, such data may remain subject to audit confirmation and verification procedures that may result in the final data being materially different from the 
preliminary, topline or interim data disclosed. As a result, all preliminary, topline and interim data, and data from early clinical trials with a small number 
of participants, should be viewed with caution until the final data or more extensive datasets are available, as applicable. Material adverse differences 
between preliminary, topline or interim data and final data, or initial proof-of-concept data and data from later or larger trials, could significantly harm our 
business, financial condition, cash flows and results of operations.
Our success depends, in part, on our ability to successfully obtain and maintain regulatory approval for our products.
We must obtain government approvals before marketing or selling our products. The FDA in the U.S., and comparable regulatory agencies in other 
jurisdictions, impose substantial and rigorous requirements for the development, manufacture and commercialization of medicines, the satisfaction of 
which can take a significant number of years and can vary substantially based upon the type, complexity and novelty of the product.
In addition, regulation is not static, and regulatory agencies, including the FDA, evolve in their staff, interpretations and practices, including as a 
result of changes in government, and may impose different or more stringent requirements than currently in effect, which may adversely affect our plans 
for product development, manufacture and/or commercialization. The approval procedures and the time and requirements necessary to obtain and maintain 
approvals may also vary among countries. Regulatory agencies may have varying interpretations of the same data, and approval by one regulatory agency 
does not ensure approval by regulatory agencies in other jurisdictions. In addition, the FDA or other regulatory agencies may choose not to communicate 
with or update us during clinical testing and regulatory review periods and the ultimate decision by the FDA or other regulatory agencies regarding drug 
approval or post-approval requirements may not be consistent with prior discussions with or communications from such agencies. 
The product approval process can last many years, be very costly and still be unsuccessful. Regulatory approval by the FDA or other regulatory 
agencies can be delayed, limited or not granted at all for many reasons, including:
•
a product may not demonstrate sufficient safety and efficacy or a sufficiently favorable benefit/risk profile for each target indication in 
accordance with applicable regulatory agencies’ standards;
•
data from preclinical testing and clinical trials may be interpreted by applicable regulatory agencies in different ways than we or our licensees 
interpret it; 

 
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•
regulatory agencies may not agree with our or our licensees’ regulatory approval strategies, plans for accelerated development timelines, 
components of our or our licensees’ filings such as clinical trial designs, conduct and methodologies, or the sufficiency of our or our 
licensees’ submitted data to meet their requirements for product approval; 
•
regulatory agencies might not approve our or our licensees’ manufacturing processes or facilities, or those of the CROs and contract 
manufacturing organizations who conduct research or manufacturing work on our or our licensees’ behalf; 
•
failure by our clinical investigational sites and the records kept at such sites, including any clinical trial data, to be in compliance with the 
FDA’s GCP, or EU legislation governing GCP, or to pass FDA, EMA or EU member state inspections of clinical trials; 
•
regulatory agencies may change their requirements for approval or post-approval marketing; and
•
adverse medical events during our clinical trials or during clinical trials of other product candidates in the same class could lead to 
requirements that trials be repeated or extended, or that a development program be terminated or placed on clinical hold, even if other studies 
or trials relating to the program are successful.
In addition, disruptions at the FDA and other regulatory agencies that are unrelated to our company or our products, including those relating to a 
prolonged U.S. government shutdown, or other global, political or economic conditions, could cause delays to the regulatory approval process for our 
products. 
Any failure to obtain, or delay in obtaining, regulatory approval for our products will prevent or delay their commercialization and could have a 
material adverse effect on our business, financial condition, cash flows and results of operations. In addition, any failure to obtain, or delay in obtaining, 
approval for our products could have a material impact on our shareholders’ confidence in the strength of our development capabilities and/or our ability to 
generate significant revenue from our development programs and could result in a significant decline in our share price. 
Even if regulatory approval to market a product is granted by the FDA or other regulatory agencies, the approved label for the product may not be 
consistent with our initial expectations or commercial plans. For example, the FDA or other regulatory agencies may impose limitations on the clinical data 
that may be included in the label for the product or the indicated uses for which, or the manner in which, the product may be marketed, or may impose 
additional post-approval requirements, such as a REMS, with which we would need to comply in order to maintain the approval of such product. Our 
business could be seriously harmed if we do not complete these post-approval requirements and, as a result, the FDA or other regulatory agencies require 
us to change the label for such product, or if such post-approval requirements significantly restrict the marketing, sale or use of such product.
In addition, legislation and regulatory policies relating to post-approval requirements and restrictions on promotional activities for pharmaceutical 
products, or FDA or other regulatory agency regulations, guidance or interpretations with respect to such legislation or regulatory policy may change, 
which may impact the development and commercialization of our products.
Disruptions at the FDA, the SEC and other government agencies could negatively impact our business. 
Disruptions at the FDA and other regulatory agencies that are unrelated to our company or our products, including due to changes in government, 
could increase the time required for new drugs to be reviewed and approved, or otherwise cause delays to the regulatory approval or post-approval 
processes for our products, which could adversely affect our business. The ability of the FDA or other regulatory agencies to review and approve new 
products or manage post-approval requirements for marketed products can be affected by a variety of factors, including government budget and funding 
levels, ability to hire and retain key personnel and accept the payment of user fees, and statutory, regulatory, and policy changes. Average review times for 
product submissions have fluctuated in recent years as a result. In addition, government funding of the SEC and other government agencies on which our 
operations may rely is subject to the impacts of political events, which are inherently fluid and unpredictable. 
For example, over the last several years, the U.S. government has shut down several times and certain regulatory agencies, such as the FDA and the 
SEC, have had to furlough critical FDA, SEC and other government employees and stop critical activities. If a prolonged government shutdown occurs, or 
if other global, political or economic conditions impact the regulatory agencies with which we interact, it could significantly impact the ability of the FDA 
and the SEC or other agencies to timely review and process our submissions, which could have a material adverse effect on our business.

 
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We may not be able to successfully expand our R&D pipeline or our commercial product portfolio, which could limit our growth potential.
Our business is focused on the development and commercialization of medicines in the field of neuroscience, and we invest substantial resources 
toward the research and development of new potential product candidates to advance into clinical trials. Notwithstanding this investment, our development 
programs may not yield viable product candidates in a timely manner or at all, and our product candidates may not obtain regulatory approval, which could 
limit our growth potential.
In addition to our internal development programs, our strategy for pipeline and commercial portfolio expansion includes identifying and evaluating 
potential transactional opportunities, including mergers and acquisitions, licenses and collaborations, and development and supply, commercialization or 
co-promotion arrangements, among others, to acquire or license additional products, product candidates, or technologies that could be additive to our 
business and to our strategy to create value for our shareholders. However, such transactions are highly competitive, and many other companies may pursue 
the same or similar assets to those that we may consider attractive. In particular, larger companies with greater financial resources or development or 
commercialization capabilities may have a competitive advantage over us. Furthermore, companies that perceive us to be a competitor may be unwilling to 
assign or license rights to us. We may also be unable to enter into transactions on acceptable terms that would allow us to realize an appropriate return on 
our investment. Even if we succeed in our efforts to obtain rights to suitable products, product candidates, or technologies, the competitive business 
environment may result in high transaction costs, and our investment in these potential assets would remain subject to the inherent risks associated with the 
development and commercialization of new medicines and may not yield the growth or success that we anticipate, which could have a material adverse 
effect on our business and financial results and the market price of our ordinary shares.
We are subject to risks related to the manufacture of our products. 
The manufacture of pharmaceutical products is a highly complex process in which a variety of difficulties may arise from time to time. We have in 
the past, and may in the future, face unanticipated interruptions or delays in manufacturing through our internal or external supply chain and resources. 
Such disruptions can occur for many reasons, including, but not limited to, the supply and quality of API, drug product and other product components and 
any potential shortages of such materials; regulatory actions; failures relating to materials, manufacturing equipment or processes, quality deviations or 
safety issues, vendor error, operator error, labor shortages or disputes, utility or transportation disruptions, or physical or electronic security breaches; site-
specific incidents (such as fires), environmental incidents, natural disasters and other severe weather events, including those that may occur as a result of 
climate change; global disruptions such as the COVID-19 pandemic and ongoing conflicts in various regions of the world; and many other factors. 
Any such problems with manufacturing processes, whether at our facilities or those of our licensees or other third parties that manufacture or 
package products or components of products on our behalf, could result in product defects or shortages, manufacturing failures or products not being 
manufactured to their applicable specifications, which could require us to delay shipment of products or recall products previously shipped, or could impair 
our or our licensees’ ability to receive regulatory approval for a product, commercially launch a product, expand into new markets or supply products in 
existing markets. We may not be able to resolve any such issues in a timely manner, or at all, which could result in declines in sales and reputational 
damage as well as significant remediation costs to address any issues that arise.
We rely solely on our manufacturing facility in Wilmington, Ohio for the manufacture of VIVITROL, ARISTADA, ARISTADA INITIO, 
LYBALVI and RISPERDAL CONSTA. Due to regulatory and technical requirements, we have limited ability to shift production within our facility or to 
outsource any portions of our manufacturing to third parties in the event of an interruption in manufacturing or demand for manufacturing that exceeds our 
capacity. Any need to transition our manufacturing processes, or portions thereof, to a third party, whether due to an interruption in our manufacturing or 
due to demand for a product that exceeds our manufacturing capacity or otherwise, could take a significant amount of time and resources, may not be 
successful, and could cause significant interruption or delay in our ability to supply products. 
VUMERITY and other products using our NanoCrystal or OCR technologies are currently manufactured through subcontracting arrangements at 
the Athlone Facility, which we previously owned and sold to Novo in May 2024. Any interruption or delay in supply from the Athlone Facility, whether 
resulting from issues with equipment, materials, personnel, manufacturing processes, or internal or external quality audits or reviews, or issues related to 
the subcontracting arrangements under which these products are manufactured, could result in delays in meeting our contractual obligations and could 
damage our reputation and relationships with our licensees, and result in potential loss of revenues.
Manufacturing facilities also require specialized personnel and are expensive to operate and maintain. Any interruption in manufacturing, delay in a 
regulatory approval or commercial launch, or recall or suspension of sales of products manufactured in our facilities, may cause operating losses as we 
continue to operate our facilities and retain the required specialized personnel. In addition, any significant personnel shortages at our manufacturing 
facilities or the Athlone Facility, whether temporary or prolonged, including shortages related to the labor market, may cause significant interruptions to 
our supply of products. 

 
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We are also dependent in certain cases on third parties who manufacture or distribute certain products from which we receive revenue. Supply or 
manufacturing issues related to such products could materially and adversely affect sales of such products, and in turn our revenue from such products. 
We rely on third parties to provide goods and services in connection with the manufacture and distribution of the products we manufacture. 
We rely on third parties for the timely supply of goods and services that play a role in our manufacturing activities, including, among others, 
specified raw materials, equipment, contract manufacturing, formulation and packaging services, storage and product distribution services, customer 
service activities and product returns processing, and some of these goods and services for our products are currently only available from a single source or 
a limited number of qualified sources. Although we actively manage these third-party relationships to support continuity, quality and compliance with 
applicable regulations, events beyond our control, including natural disasters and other severe weather events, including those that may occur as a result of 
climate change, or global disruptions such as the COVID-19 pandemic and ongoing conflicts in various regions in the world, could negatively impact the 
continuity of supply of such materials and/or services, their quality and their compliance with applicable standards. Any such failure could materially 
adversely affect our business, financial condition, cash flows and results of operations. 
The manufacture of products and product components, including the procurement of bulk drug product and other materials used in the manufacture, 
packaging, storage and distribution of our products, requires successful coordination among us and multiple third-party providers. Lack of capacity 
available at such third-party providers or any other issues with the quality or operations of these third-party providers, including any issues related to 
regulatory permits, audits or requirements, could require us to delay shipment of saleable products, recall products previously shipped or impair our ability 
to supply products at all. 
We endeavor to qualify and register new vendors and to develop contingency plans so that production is not materially impacted by third-party 
provider issues. Nonetheless, any such third-party provider issues could increase our costs, cause us to lose revenue or market share and damage our 
reputation, and may have a material adverse effect on our business, financial condition, cash flows and results of operations. 
In addition, we rely heavily on the three largest pharmaceutical wholesalers in the U.S. market—Cardinal Health Inc., Cencora, and McKesson Corp
—in the distribution of the products that we market and sell in the U.S. If we are unable to maintain our business relationships with these wholesalers on 
commercially acceptable terms, if these wholesalers experience prolonged business disruptions, if the buying patterns of these wholesalers fluctuate due to 
seasonality or any other reason or if wholesaler buying decisions or other factors outside of our control change, our business, financial condition, cash 
flows and results of operations could be materially adversely affected.
If we or our third-party providers fail to meet the stringent requirements of governmental regulation in the manufacture of our products, we could 
incur substantial remedial costs and experience a reduction in sales and/or revenues. 
We and the third-party providers involved in our manufacturing activities are generally required to comply with cGMP regulations and other 
applicable non-U.S. standards in the manufacture of our products or components of our products. Additionally, if any of our products or components of our 
products in the U.S. are scheduled by the DEA as controlled substances, we would also be subject to DEA regulations. We and our third-party providers are 
subject to unannounced inspections by the FDA and other governmental agencies to confirm compliance with all applicable laws. Any changes to our 
suppliers or modifications of methods of manufacturing require submission of amendments to our marketing applications to the FDA or other applicable 
regulatory agencies, and ultimate acceptance by such agencies of such amendments, prior to release of product to the applicable marketplace. Our inability, 
or the inability of our third-party providers, to demonstrate ongoing compliance with cGMP or other regulatory requirements could require us to withdraw 
or recall products and interrupt clinical and commercial supply of our products. Any delay, interruption or other issues that may arise in the manufacture, 
formulation, packaging or storage of our products as a result of a failure of our facilities or operations or the facilities or operations of third-party providers 
to pass any regulatory agency inspection could significantly impair our ability to develop, obtain and maintain regulatory approval of, and commercialize 
or supply, products. This interruption could increase our costs, cause us to lose revenue or market share and damage our reputation with our collaboration 
partners or in the market generally. 
In March 2020, in response to the COVID-19 pandemic, the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) was signed 
into law in the U.S., and served to increase the FDA’s existing authority with respect to drug shortage measures. Under the CARES Act, for each facility 
where marketed products for certain serious diseases or conditions are manufactured, or where components of such products are manufactured, we are 
required to have a risk management plan in place that identifies and evaluates risks to the supply of such products or product components, which plans may 
be subject to review during any FDA inspection. Each of our facilities operates in accordance with a comprehensive quality management system, which 
includes risk assessment, preventive actions and regular review of inventory levels for each of the marketed products that we manufacture; however, the 
FDA may not consider our risk management program to be sufficient upon inspection and we may still experience 

 
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shortages in the supply of marketed products that we manufacture, which could materially adversely affect the patients who rely on such marketed products 
and our business, financial condition, cash flows and results of operations. The FDA and various regulatory agencies outside the U.S. have inspected and 
approved our commercial manufacturing facilities. However, the FDA and any other regulatory agencies may not approve any other facility that we or our 
third-party providers may operate and, once approved, any of these facilities may not remain in compliance with cGMP and other regulations. Any third 
party we use to manufacture bulk drug product for use in the U.S. must be licensed by the FDA. Failure by us or our third-party providers to gain or 
maintain regulatory compliance with and approvals from the FDA or other regulatory agencies could materially adversely affect our business, financial 
condition, cash flows and results of operations. 
Our success largely depends upon our ability to attract, recognize and retain key personnel. 
Our ability to compete and succeed in the highly competitive biopharmaceutical industry and in the disease states in which we market and sell 
products depends largely upon our ability to attract, recognize and retain highly skilled technical, scientific, manufacturing, management, regulatory, legal, 
compliance and selling and marketing personnel. Each of our executive officers and all of our employees are employed “at will,” meaning we or each 
officer or employee may terminate the employment relationship at any time. We face intense competition for employees due to, among many factors, the 
geographic locations in which we operate and the competitive benefits and compensation practices in our industry, and in recent years, new competition as 
employees are increasingly able to work remotely. The loss of key personnel due to any of these factors or our inability to hire and retain personnel who 
have technical, scientific, manufacturing, management, regulatory, legal, compliance or commercial backgrounds could materially adversely impact our 
business, including the achievement of our manufacturing, research and development, commercial, financial and other operational and strategic business 
objectives.
Risks Related to Intellectual Property 
Patent and other IP protection for our products is key to our business and our competitive position but is uncertain.
Receiving and maintaining patent and/or trademark protection for our products and technologies, including those that are subject to our licensing 
arrangements, maintaining our trade secrets, not infringing the proprietary rights of others, and preventing others from infringing our proprietary rights are 
each key to our success and our competitive position. 
Patent protection provides rights of exclusivity for the term of the patent. We are able to protect our proprietary rights from unauthorized use by 
third parties only to the extent that our proprietary rights are covered by valid and enforceable patents or are effectively maintained as trade secrets. In this 
regard, we try to protect our proprietary position by filing patent applications in the U.S. and elsewhere related to our proprietary product inventions and 
improvements that are important to our business and products. Our pending patent applications, together with those we may file in the future, or those we 
may license to or from third parties, may not result in patents being issued. Even if issued, such patents may not provide us with sufficient proprietary 
protection or competitive advantages against competitors with similar products or technology. Because the patent positions of biopharmaceutical 
companies involve complex legal and factual questions, enforceability of patents cannot be predicted with certainty. The ultimate degree of patent 
protection that will be afforded to products and processes, including ours and those of our licensees, in the U.S. and in other important markets, remains 
uncertain and is dependent upon the scope of protection decided upon by the patent offices, courts and lawmakers in these countries. The development of 
new technologies or products may take a number of years, and there can be no assurance that any patents which may be granted in respect of such 
technologies or products will not have expired or be due to expire by the time such products are commercialized, or that such patents will successfully 
withstand any challenges during their respective terms.
Although we make reasonable efforts to protect our IP rights and to ensure that our proprietary products and technologies do not infringe the IP 
rights of third parties, we cannot ascertain the existence of all potentially conflicting IP claims. Therefore, there is a risk that third parties may make claims 
of infringement against our products or technologies. If patents exist or are issued that cover our products or technologies, we may not be able to 
manufacture, use, offer for sale, sell or import such products without first getting a license from the patent holder. The patent holder may not grant us a 
license on reasonable terms, or it may refuse to grant us a license at all. This could delay or prevent us from developing, manufacturing, selling or 
importing those of our products that would require the license. Claims of IP infringement may also require that we redesign affected products, enter into 
costly settlement or license agreements, pay costly damage awards, or face a temporary or permanent injunction prohibiting us from marketing or selling 
certain of our products. Even if we have an agreement that may serve to indemnify us against such costs, the indemnifying party may be unable to uphold 
its contractual obligations. If we cannot, or do not, license the infringed IP on reasonable terms or at all, or substitute similar IP from another source, our 
business, financial condition, cash flows and results of operations could be materially adversely affected.

 
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The laws of certain countries may not protect our IP rights to the same extent as the laws of the U.S., and any patents that we own or license from 
others may not provide any protection against competitors. In addition, in the case of certain of our licensed products or products incorporating our licensed 
technology, our licensees are responsible for prosecuting, maintaining, enforcing and defending the IP related to the product(s) from which we derive 
revenue. Their failure to secure, maintain, enforce and defend this IP could materially and adversely affect our business, financial condition, cash flows, 
and results of operations. 
We also rely on trade secrets, know-how and inventions, which are not protected by patents, to maintain our competitive position. We try to protect 
this information by entering into confidentiality agreements with parties that have access to it, such as our licensees, licensors, contract manufacturers, 
potential business partners, employees and consultants. However, any of these parties may breach such agreements and may disclose our confidential 
information, or our competitors might learn of the information in some other way. To the extent that our employees, consultants or contractors use IP 
owned by others in their work for us, disputes may arise as to the rights in related or resulting know-how and inventions. If any trade secret, know-how or 
other invention not protected by a patent were to be disclosed to, or independently developed by, a competitor, such event could materially and adversely 
affect our business, financial condition, cash flows and results of operations. 
Uncertainty over IP in the biopharmaceutical industry has been the source of litigation and other legal proceedings, and we or our licensees may face 
claims against IP rights covering our products and competition from generic drug manufacturers.
There is considerable uncertainty within the biopharmaceutical industry about the validity, scope and enforceability of many issued patents in the 
U.S. and elsewhere in the world. We cannot currently determine the ultimate scope, validity and enforceability of patents which may be granted to third 
parties in the future or which patents third parties may assert are infringed by the manufacture, use or sale of our products. 
Patents, if issued, may be challenged, invalidated or circumvented. As our products achieve greater commercial sales, potential competitors are more 
likely to seek to challenge our patents. In the biopharmaceutical industry, there has been, and we expect that there may continue to be, significant litigation, 
inter partes reviews (“IPRs”), post-grant reviews (“PGRs”) and administrative proceedings regarding patents and other IP rights. A third party may file an 
IPR, PGR, interference and/or infringement action against us, including in response to patent certifications required under the Hatch-Waxman Act, 
claiming that certain claims of one or more of our issued patents are invalid or that the manufacture, use, offer for sale, sale or import of our products 
infringed one or more of such party’s patents. For example, in December 2024, Argentum Pharmaceuticals LLC filed a request with the USPTO for ex 
parte reexamination of the validity of certain claims of our U.S. Patent No. 7,919,499 that covers VIVITROL, which request was granted in January 2025 
and is pending. And in January 2025, Apotex Inc. filed with the USPTO a petition for IPR of certain claims of U.S. Patent No. 7,919,499 that cover 
VIVITROL, which petition has not yet been instituted.
In addition, we may need to enforce our IP rights against third parties who infringe on our patents and other IP or challenge our patents, patent 
applications or trademark applications. In the U.S., generic manufacturers of innovator drug products may file ANDAs and, in connection with such filings, 
certify that their products do not infringe the innovator’s patents or that the innovator’s patents are invalid. This often results in litigation between the 
innovator and the ANDA applicant, commonly known in the U.S. as “Paragraph IV” litigation, which can be expensive, protracted and distracting to 
management, with no certainty of success. For example, Teva entities filed an ANDA seeking approval to engage in the commercial manufacture, use or 
sale of a generic version of VIVITROL and alleged that one of our Orange-Book patents related to VIVITROL is invalid, unenforceable and/or will not be 
infringed by Teva’s proposed product. In response, we initiated a Paragraph IV lawsuit against Teva in September 2020 to dispute such claims.
We may have to expend considerable time, effort and resources to defend such actions, and litigation may be necessary in some instances to 
determine the validity and scope of certain of our proprietary rights. In order to avoid or resolve timely and costly IP litigation or IPR, PGR or other 
administrative proceedings, we may enter into settlement agreements in which we grant an adverse party certain rights with respect to our IP. For example, 
in August 2023, following a trial in the Teva patent infringement lawsuit discussed above, we entered into a confidential settlement and license agreement 
(the “Settlement Agreement”) with Teva in August 2023 to resolve the proceedings between the parties. Pursuant to the terms of the Settlement Agreement, 
we granted Teva a non-exclusive, royalty-free, non-transferable, non-sublicensable limited license to market and sell a generic version of VIVITROL in the 
U.S. beginning on January 15, 2027, or earlier under certain circumstances. And in July 2019, in order to resolve an IPR instituted by Amneal with the 
PTAB, we granted Amneal a non-exclusive license under certain patents covering VIVITROL, including the latest to expire patent covering VIVITROL in 
the U.S., to market and sell a generic formulation of VIVITROL in the U.S. beginning sometime in 2027 or earlier under certain circumstances.
There can be no assurance that we or our licensees will prevail or settle any IP legal proceedings or disputes on favorable terms. Our and our 
licensees’ existing patents could be invalidated, found unenforceable or found not to cover generic forms of our or our licensees’ products. If any ANDA 
filers were to receive FDA approval to sell generic versions of our products or the products from which we receive revenue and/or prevail in any patent 
litigation with respect to such products, our business, financial condition, cash flows and results of operations could be materially adversely affected.

 
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Risks Related to Regulatory or Legal Matters
Litigation or arbitration filed against Alkermes, including securities litigation, or actions (such as citizens petitions) filed against regulatory agencies in 
respect of our products, may result in financial losses, harm our reputation, divert management resources, negatively impact the approval of our 
products, or otherwise negatively impact our business.
We are, and may in the future become, involved in various legal proceedings, including those asserting violations of securities and/or fraud and 
abuse laws and those asserting claims related to product liability, IP and/or contractual arrangements. Such proceedings may include claims for, or the 
possibility of, damages or fines and penalties involving substantial amounts of money or other relief, including but not limited to civil or criminal fines and 
penalties. Such legal proceedings and the preparation therefor may result in substantial costs to us and diversion of management’s attention and resources, 
which in turn could harm our business. Moreover, if any of such legal proceedings were to result in an adverse outcome, such outcome could have a 
material adverse effect on our business, financial condition, cash flows and results of operations.
Further, our liability insurance coverage may not be sufficient to satisfy, or may not cover, any expenses or liabilities that may arise. Additionally, 
regardless of whether or not there is merit to the claims underlying any legal proceedings to which we are subject, or whether or not we are found as a 
result of such lawsuits to have violated any applicable laws, such lawsuits and inquiries can be expensive to defend or respond to, may divert the attention 
of our management and other resources that would otherwise be engaged in managing our business, and may further cause significant and potentially 
irreparable harm to our public reputation. 
We have been, and may again be, the subject of citizen petitions or litigation that request that the FDA refuse to approve, delay or withdraw 
approval of, or impose additional approval requirements on our marketing applications. If successful, such petitions can significantly delay, or even 
prevent, the approval of the marketing application in question or cause such marketing application approval to be withdrawn. Even if the FDA ultimately 
denies such a petition, the FDA may substantially delay approval while it considers and responds to the petition, or may impose additional approval or 
post-approval requirements as a result of such petition. These outcomes and others could adversely affect our share price as well as our ability to generate 
revenues from the commercialization and sale of our products and products using our proprietary technologies.
The clinical study or commercial use of our products may cause unintended side effects or adverse reactions, or incidents of misuse may occur, which 
could adversely affect our products, business and share price.
We cannot predict whether the clinical or commercial use of our products will produce undesirable or unintended side effects that have not been 
evident in the use of, or in clinical trials conducted for, such products to date. The administration of drugs in humans carries the inherent risk of product 
liability claims whether or not the drugs are actually the cause of an injury. Our products may cause, may appear to have caused or may be claimed to have 
caused, injury or dangerous drug interactions, and we may not learn about or understand those claims or effects until the products have been administered 
to patients for a prolonged period of time. Additionally, incidents of product misuse may occur.
These events, among others, could result in product recalls or additional regulatory controls (including additional regulatory scrutiny, REMS 
programs, and/or requirements for additional labeling) or product liability actions. As our development activities progress and we continue to have 
commercial sales, our product liability insurance coverage may be inadequate to satisfy liabilities that arise, we may be unable to obtain adequate coverage 
at an acceptable cost or at all, or our insurer may disclaim coverage as to a future claim. This could prevent or limit the development or commercialization 
of our products. In addition, the reporting of adverse safety events involving our products, including instances of product misuse, and public perceptions 
about such events, could cause our product sales or share price to decline or experience periods of volatility. These types of events could have a material 
adverse effect on our business, financial condition, cash flows and results of operations.
If we fail to comply with our reporting and payment obligations under the Medicaid Drug Rebate Program or other governmental pricing programs, we 
could be subject to additional reimbursement requirements, penalties, sanctions and fines, which could have a material adverse effect on our business, 
financial condition, results of operations and growth prospects.
We participate in the Medicaid Drug Rebate Program, the 340B program, the U.S. Department of Veterans Affairs’ FSS pricing program, and the 
Tricare program, and have obligations to report the average sales price for certain of our drugs to the Medicare program.
Pricing and rebate calculations vary across products and programs, are complex, and are often subject to interpretation by us, governmental or 
regulatory agencies and the courts, which can change and evolve over time. In the case of our Medicaid pricing data, if we become aware that our reporting 
for a prior quarter was incorrect, or has changed as a result of recalculation of the pricing data, we are generally obligated to resubmit the corrected data for 
up to three years after those data originally were due. Such restatements and recalculations increase our costs for complying with the laws and regulations 
governing the Medicaid Drug Rebate Program and could result in an overage or underage in our rebate liability for past quarters. Price recalculations also 
may affect the ceiling price at which we are required to offer our products under the 340B program and give rise to an obligation to refund entities 
participating in the 340B program for overcharges during past quarters impacted by a price recalculation.

 
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Civil monetary penalties can be applied if we are found to have knowingly submitted any false price or product information to the government, if we 
are found to have made a misrepresentation in the reporting of our average sales price, if we fail to submit the required price data on a timely basis, or if we 
are found to have charged 340B covered entities more than the statutorily mandated ceiling price. CMS could also decide to terminate our Medicaid drug 
rebate agreement, in which case federal payments may not be available under Medicaid or Medicare Part B for our covered outpatient drugs. We cannot 
assure you that our submissions will not be found by CMS to be incomplete or incorrect.
Our failure to comply with our reporting and payment obligations under the Medicaid Drug Rebate Program and other governmental programs could 
negatively impact our financial results. CMS issued a final regulation, which became effective in April 2016, to implement the changes to the Medicaid 
Drug Rebate Program under the Affordable Care Act. Since that time, CMS has issued multiple proposed and final rules that change the Medicaid Drug 
Rebate Program. Regulatory and legislative changes, and judicial rulings relating to the Medicaid Drug Rebate Program and related policies, have 
increased and will continue to increase our costs and the complexity of compliance, have been and will continue to be time-consuming to implement, and 
could have a material adverse effect on our results of operations, particularly if CMS or another agency challenges the approach we take in our 
implementation.
HRSA issued a final regulation regarding the calculation of the 340B ceiling price and the imposition of civil monetary penalties on manufacturers 
that knowingly and intentionally overcharge covered entities, which became effective in January 2019. Implementation of this regulation could affect our 
obligations and potential liability under the 340B program in ways we cannot anticipate. We are also required to report the 340B ceiling prices for our 
covered outpatient drugs to HRSA, which then publishes them to 340B covered entities. Any charge by HRSA that we have violated this regulation or 
other requirements of the program could negatively impact our financial results. Moreover, HRSA has established an administrative dispute resolution 
(“ADR”) process, which is governed by a final regulation effective June 2024, for claims by covered entities that a manufacturer engaged in overcharging, 
including claims that a manufacturer limited the ability of a covered entity to purchase the manufacturer’s drugs at the 340B ceiling price, and by 
manufacturers that a covered entity violated the prohibitions against diversion or duplicate discounts. Such claims are to be resolved through an ADR panel 
of government officials rendering a decision that could be appealed only in federal court. An ADR proceeding could potentially subject us to discovery by 
covered entities and other onerous procedural requirements and could result in additional liability. HRSA could also decide to terminate a manufacturer’s 
agreement to participate in the 340B program for a violation of that agreement or other good cause shown, in which case the manufacturer’s covered 
outpatient drugs may no longer be eligible for federal payment under the Medicaid or Medicare Part B program.
Further, legislation may be introduced that, if passed, would, among other things, further expand the 340B program to additional covered entities or 
would require participating manufacturers to agree to provide 340B discounted pricing on drugs used in an inpatient setting, and any additional future 
changes to the definition of average manufacturer price or the Medicaid rebate amount could affect our 340B ceiling price calculations and negatively 
impact our results of operations. Additionally, we have implemented a policy governing the eligibility of covered entities to purchase our products at the 
340B price for shipment to a contract pharmacy. We implemented this policy out of concern that contract pharmacy arrangements are diverting the benefits 
of the 340B program from patients to contract pharmacies and contributing to the pervasive lack of transparency within the 340B program, rendering it 
difficult to identify inappropriate duplicate discounts and product diversion. Certain pharmaceutical manufacturers and the industry group, Pharmaceutical 
Research and Manufacturers of America (“PhRMA”) are involved in ongoing litigation with the HRSA regarding manufacturer initiatives that restrict 
covered entities’ ability to purchase products at the 340B program price for shipment through an unlimited number of contract pharmacies. Additionally, 
several states have enacted, and many other states are considering, laws that prohibit manufacturer restrictions on contract pharmacies. Certain 
pharmaceutical manufacturers and PhRMA have initiated litigation challenging these state laws. The outcome of pending judicial proceedings and the 
potential impact on the way in which manufacturers extend discounts to covered entities through contract pharmacies remain uncertain and negative legal 
rulings, or the passage of legislation in respect of this topic, may materially adversely impact our results of operations.
We have obligations to report the average sales price for certain of our drugs to the Medicare program. In addition, we are required to report the best 
price for our drugs, as defined under the Medicaid Drug Rebate Program, to CMS. Statutory or regulatory changes or changes in CMS guidance could 
affect the average sales price or best price calculations for our products and the resulting Medicare payment rate or rebates we owe to state Medicaid 
programs. Such changes could negatively impact our results of operations.
Pursuant to applicable law, knowing provision of false information in connection with price reporting under the U.S. Department of Veterans 
Affairs, FSS or Tricare programs can subject a manufacturer to civil monetary penalties. These program obligations also contain extensive disclosure and 
certification requirements. If we overcharge the government in connection with our arrangements with FSS or Tricare, we are required to refund the 
difference to the government. Failure to make necessary disclosures and/or to identify contract overcharges can result in allegations against us under the 
False Claims Act and other laws and regulations. Unexpected refunds to the government, and responding to a government investigation or enforcement 
action, would be expensive and time-consuming, and could have a material adverse effect on our business, financial condition, results of operations and 
growth prospects.

 
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Our business involves environmental, health and safety risks.
Our business involves the use of hazardous materials and chemicals and is subject to numerous environmental, health and safety laws and 
regulations and to periodic inspections for possible violations of these laws and regulations. Under certain of these laws and regulations, we could be liable 
for any contamination at our current or former properties or third-party waste disposal sites. In addition to significant remediation costs, contamination can 
give rise to third-party claims for fines, penalties, natural resource damages, personal injury and damage (including property damage). The costs of 
compliance with environmental, health and safety laws and regulations are significant. We have developed and implemented a proprietary risk mitigation 
program to preemptively identify and address environmental, health, safety and security risks; however, there can be no assurance that a violation of 
current or future environmental, health or safety laws or regulations will not occur. Any violations, even if inadvertent or accidental, or the cost of 
compliance with any resulting order, fine or liability that may be imposed, could materially adversely affect our business, financial condition, cash flows 
and results of operations.
Risks Related to our Financial Condition and Tax Matters
We may not be able to maintain profitability on a sustained basis. 
At December 31, 2024, our accumulated deficit was $1.0 billion, which was primarily the result of net losses incurred from continuing operations 
from 1987, the year Alkermes, Inc. was founded, through December 31, 2022, partially offset by net income from continuing operations over certain fiscal 
periods, including net income earned during the years ended December 31, 2024 and December 31, 2023.
Our ability to maintain profitability on a sustained basis will depend on our ability to continue to grow and diversify our revenue and to effectively 
and efficiently manage our costs. Factors that may impact our future revenue, and in turn our future profitability, include, among others, our or our 
licensees’ (as applicable) ability to:
•
successfully commercialize VIVITROL, the ARISTADA product family, LYBALVI, VUMERITY, XEPLION, INVEGA 
TRINZA/TREVICTA and INVEGA HAFYERA/BYANNLI and any other marketed products from which we earn revenue in the countries 
in which such products are approved;
•
successfully develop, and obtain and maintain regulatory approval for, products in the U.S. and/or in other countries; 
•
successfully manufacture our products and third-party products efficiently and in a cost-effective manner;
•
obtain adequate reimbursement coverage for our products and third-party products from insurance companies, government programs and 
other third-party payers;
•
successfully protect and defend our confidential information and IP rights related to our technologies and our products;
•
achieve product development or sales milestones under our collaborative arrangements; and
•
resolve favorably any commercial disputes that may arise in respect of collaborative arrangements from which we receive revenues. 
Factors that may impact our future spend, and in turn our future profitability, include, among others:
•
the scope of our research and development activities, including the number of programs, products, indications or new technologies that we 
may pursue, and our ability, if sought, to share development costs through potential collaborations;
•
the time and expense required to pursue FDA and/or other regulatory approvals for our products; 
•
the time and expense required to prosecute, enforce, defend and/or challenge patent and other IP rights; 
•
the costs of operating and maintaining our manufacturing and research facilities, including the costs and availability of raw materials or 
components of our products; 
•
the costs of doing business with third-party vendors, including suppliers, manufacturers, packagers and distributors and CROs; 
•
the scope and costs of our commercial activities, including expansion of our sales force and our investment in direct-to-consumer campaigns 
and other initiatives;
•
the cost of possible business development activities, including licenses or acquisitions of technologies, compounds or product rights or the 
potential acquisition of other assets, including equipment, facilities or businesses; 
•
the costs related to potential litigation, arbitration or other legal proceedings or government requests for information; 
•
the costs of defending against potential or actual proxy contests or other activist shareholder actions; 

 
44
•
the costs of compliance with new regulations applicable to us, including those related to the measurement, reporting and assurance of 
environmental performance data and other sustainability matters; and 
•
the costs associated with recruiting, compensating and retaining a highly-skilled workforce in an environment where competition for highly-
skilled employees is intense. 
We have broad discretion regarding use of our cash and cash equivalents and we may not allocate our cash in ways that ultimately increase the value 
of our ordinary shares. 
We have broad discretion in the allocation of our cash and cash equivalents and we may not allocate our cash in ways that ultimately increase the 
value of our ordinary shares. We could make capital allocation decisions to utilize such funds in a way that our shareholders do not agree with or that do 
not ultimately generate shareholder value in the manner they, or we, anticipate or at all. If our cash and cash equivalents are not deployed effectively or do 
not generate shareholder value, we may fail to achieve expected financial results or other business objectives, which could have a material negative impact 
on our financial condition, results of operations or the market price of our ordinary shares.
Certain U.S. holders of our ordinary shares may suffer adverse tax consequences if any of our non-U.S. subsidiaries are characterized as a “controlled 
foreign corporation”.
In December 2017, the Tax Cuts and Jobs Act of 2017 (the “Tax Cuts and Jobs Act”) was signed into law. This legislation significantly changed 
U.S. tax law by, among other things, changing the rules which determine whether a foreign corporation is treated for U.S. tax purposes as a controlled 
foreign corporation (“CFC”) for taxable years ended December 31, 2017 and onwards. The impact of this change on certain holders of our ordinary shares 
is uncertain and could be adverse, including potential income inclusions and reporting requirements for U.S. persons (as defined in the U.S. Internal 
Revenue Code of 1986, as amended (the “Code”)) who are treated as owning (directly or indirectly) at least 10% of the value or voting power of our shares. 
The determination of CFC status is complex and includes attribution rules, the application of which are not entirely certain. These changes to the attribution 
rules relating to the determination of CFC status make it possible that one or more of our non-U.S. subsidiaries will be classified as a CFC. Existing and 
prospective investors should consult their tax advisers regarding the potential application of these rules to their investments in our securities.
See “Certain Irish and United States Federal Income Tax Considerations – United States Federal Income Tax Considerations” in our Form S-1/A, 
filed with the SEC on February 29, 2012, for additional discussion with respect to other potential U.S. federal income tax consequences of investments in 
us.
If goodwill becomes impaired, we may have to take significant charges against earnings. 
At December 31, 2024, we had $83.0 million of goodwill. Under accounting principles generally accepted in the U.S. (“GAAP”), we must assess, at 
least annually and potentially more frequently, whether the value of goodwill has been impaired. Any reduction or impairment of the value of goodwill will 
result in a charge against earnings, which could materially adversely affect our results of operations and shareholders’ equity in future periods. 
Our effective tax rate may increase. 
As a global biopharmaceutical company, we are subject to taxation in a number of different jurisdictions. As a result, our effective tax rate is derived 
from a combination of applicable tax rates in the various places that we operate. In preparing our financial statements, we estimate the amount of tax that 
will become payable in each of these places. Our effective tax rate may fluctuate depending on a number of factors, including, but not limited to, the 
distribution of our profits or losses between the jurisdictions where we operate and differences in interpretation of tax laws. In addition, the tax laws of any 
jurisdiction in which we operate may change in the future, which could impact our effective tax rate. Tax authorities in the jurisdictions in which we 
operate may audit us. If we are unsuccessful in defending any tax positions adopted in our submitted tax returns, we may be required to pay taxes for prior 
periods, interest, fines or penalties, and may be obligated to pay increased taxes in the future, any of which could have a material adverse effect on our 
business, financial condition, cash flows and results of operations. 
Changes in tax rules and regulations, or interpretations thereof, may adversely affect our financial condition.
The U.S. Congress, the EU, the Organization for Economic Co-operation and Development (“OECD”), and other government agencies in 
jurisdictions where we and our affiliates do business are focused on the taxation of multinational corporations. As a result of this focus, the tax laws in 
Ireland and the U.S. could change on a prospective or retroactive basis, and any such changes could adversely affect us.

 
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The Tax Cuts and Jobs Act amended Section 174 of the Code (“Section 174”) and, with effect from January 2022, eliminated the option to deduct 
R&D expenses in the year incurred and instead requires taxpayers to capitalize, and subsequently amortize such expenses over five years for research 
activities conducted in the U.S., and over fifteen years for research activities conducted outside of the U.S. As such, we expect a material decrease in cash 
flows provided from operations and a material increase in our net U.S. deferred tax assets over the next number of years, which could have a material 
adverse effect on our business, financial condition, cash flows and results of operations.
In December 2022, the EU implemented a new corporate minimum tax rate of 15% on companies with combined annual revenue of at least €750.0 
million, which was transposed into Irish law effective as of January 1, 2024. We do not expect such rules to have a material effect on our business in 2025; 
however, such minimum tax rate rules or other similar rules could have a material adverse effect on our business, financial condition, cash flows and results 
of operations in future years. 
Our deferred tax assets may not be realized. 
As of December 31, 2024, we had $121.6 million of net deferred tax assets in the U.S. It is possible that some or all of the deferred tax assets will 
not be realized, especially if we incur losses in the U.S. in the future. Losses may arise from operating events (including clinical program progression), or 
the occurrence of significant excess tax benefits arising from the exercise of stock options and/or the vesting of restricted stock unit awards. Unless we are 
able to generate sufficient taxable income in the future, a substantial valuation allowance to reduce the carrying value of our U.S. deferred tax assets may 
be required, which would materially increase our expenses in the period the valuation allowance is recognized and materially adversely affect our financial 
condition and results of operations. 
Furthermore, we have included within our U.S. net deferred tax assets of $121.6 million an amount of $30.0 million relating to employee share-
based compensation expense. It is possible that a significant portion of this deferred tax asset will not be realized, especially if the price of our ordinary 
shares remains at its current level (see “Item 5—Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity 
Securities” in this Annual Report for details of the price of our ordinary shares). Unless the price of our ordinary shares increases, we will incur a deferred 
tax expense as our U.S.-based employees exercise or forfeit their stock options and their restricted stock unit awards vest. This could significantly increase 
our tax expense and may adversely affect our financial condition and results of operations.
The disposition of the Athlone Facility may limit our ability to use our net operating losses and result in unanticipated tax liabilities.
As of December 31, 2023, we had $94.7 million of net deferred tax assets in Ireland, including $87.5 million relating to net operating losses 
(“NOLs”). These NOLs can be carried forward, without time limit, against trading income of the same trade in future accounting periods. In May 2024, we 
completed the sale of the Athlone Facility to Novo. The disposition of the Athlone Facility may be deemed to result in (i) a significant change to the 
existing trade such that the same trade is no longer continued, and (ii) a complete discontinuance of the existing trade and the commencement of a new 
trade. We do not believe that the disposition of the Athlone Facility would amount to a significant change or a discontinuance of our existing trade; 
however, the Irish Tax Authority could assert a contrary position, in which case we could become involved in tax controversy with the Irish Tax Authority 
regarding possible additional tax liabilities. If we were to be unsuccessful in resolving any such tax controversy in our favor, we could be liable for 
significant additional tax liabilities than that which we anticipate, which would materially adversely affect our financial condition, cash flows and results of 
operations.
The IRS may not agree with our conclusion that we should be treated as a foreign corporation for U.S. federal income tax purposes.
In September 2011, the business of Alkermes, Inc., a U.S. corporation, and the drug technology business of Elan Corporation, plc, an Irish-
incorporated public limited company, were combined under Alkermes plc, an Irish-incorporated public limited company (the “Business Combination”). 
For U.S. federal income tax purposes, a corporation is generally considered tax resident in the place of its incorporation. Because we are incorporated in 
Ireland, we should be classified as an Irish corporation under these general rules. However, Section 7874 of the Code generally provides that a corporation 
organized outside the U.S. that acquires substantially all of the assets of a corporation organized in the U.S. will be treated as a U.S. corporation (and, 
therefore, a U.S. tax resident) for U.S. federal income tax purposes if shareholders of the acquired U.S. corporation own at least 80% (of either the voting 
power or the value) of the stock of the acquiring foreign corporation after the acquisition by reason of holding stock in the domestic corporation, and the 
“expanded affiliated group” (as defined in Section 7874) that includes the acquiring corporation does not have substantial business activities in the country 
in which it is organized. 

 
46
We believe that Alkermes plc should be classified as an Irish tax resident corporation and should not be treated as a U.S. corporation for U.S. federal 
income tax purposes. However, the IRS could assert a contrary position, in which case we could become involved in tax controversy with the IRS 
regarding possible additional U.S. tax liability. If we were to be unsuccessful in resolving any such tax controversy in our favor, we could be liable for 
significant additional U.S. federal and state income tax than those we anticipate, which would materially adversely affect our financial condition, cash 
flows and results of operations.
If the separation of our oncology business completed in November 2023 does not ultimately qualify as a transaction that is generally tax-free for U.S. 
federal and Irish tax purposes as we anticipate, we and/or our shareholders could be subject to significant tax liabilities. 
In connection with the separation of our oncology business into Mural Oncology plc completed in November 2023, we sought and received a private 
letter ruling from the IRS (the “IRS Ruling”) and an opinion from our U.S. tax advisor (the “U.S. Tax Opinion”) regarding U.S. federal income tax 
consequences of the separation, including that, among other things, the separation would be expected to generally qualify as tax-free for U.S. federal 
income tax purposes under Sections 368(a)(1)(D) and 355 of the Code. The IRS Ruling and/or the U.S. Tax Opinion were based on and relied on, among 
other things, certain facts, assumptions, representations, and undertakings from us and Mural Oncology plc, including those relating to past and future 
conduct of the companies’ respective business operations and other matters. If any of these facts, assumptions, representations, statements or undertakings 
are, or become, inaccurate or incomplete, or if we or Mural Oncology plc breach any of our respective covenants in the separation documents, the IRS 
Ruling and/or the U.S. Tax Opinion may be invalid and the conclusions reached therein could be jeopardized. Notwithstanding the U.S. Tax Opinion or 
IRS Ruling, the IRS could determine that a distribution or any related transaction is taxable for U.S. federal income tax purposes if it determines that any of 
these facts, assumptions, representations or undertakings are not correct or have been violated, or that the distribution should be taxable for other reasons, 
including if the IRS were to disagree with the conclusions in the U.S. Tax Opinion. The U.S. Tax Opinion will not be binding on the IRS or the courts. 
Accordingly, the IRS or the courts may challenge the conclusions stated in the U.S. Tax Opinion and such challenge could prevail. If the separation 
transaction is ultimately determined to be taxable, we and/or our shareholders that are subject to U.S. federal income tax could incur significant tax 
liabilities. 
Furthermore, in connection with the separation, we sought and received an opinion from our Irish tax advisor (the “Irish Tax Opinion”) regarding 
the Irish tax consequences of the separation. The Irish Tax Opinion was based on and relied on, among other things, certain facts, assumptions, 
representations, and undertakings from us, including those relating to past and future conduct of our business operations and other matters. If any of these 
facts, assumptions, representations, statements or undertakings are, or become, inaccurate or incomplete the Irish Tax Opinion may be invalid and the 
conclusions reached therein could be jeopardized. The Irish Tax Opinion will not be binding on the Irish Tax Authority or the Irish courts. Accordingly, the 
Irish Tax Authority or the Irish courts may challenge the conclusions stated in the Irish Tax Opinion and such challenge could prevail. In such an event, we 
and/or our shareholders could incur significant tax liabilities. 
Our business strategy may involve future transactions which may harm the market price of our ordinary shares or require us to seek additional funds, 
and such funding may not be available on commercially favorable terms or at all and may cause dilution to our existing shareholders.
In order to achieve our business strategy, we regularly review potential transactions related to technologies, products or product rights or other 
assets, and businesses that are complementary to our business, including mergers and acquisitions, licenses and collaborations, and development and 
supply, commercialization or co-promotion arrangements, among others. We may choose to enter into one or more of these or other transactions at any 
time, which may cause substantial fluctuations in the market price of our ordinary shares. Moreover, depending upon the nature of any transaction, we may 
experience a charge to earnings, which could also materially adversely affect our results of operations and could harm the market price of our ordinary 
shares. 
In order to finance such transactions, we may require additional funds, and we may seek such funds through various sources, including debt and 
equity offerings, corporate collaborations, bank borrowings, arrangements relating to assets, monetization of royalty streams or other financing methods or 
structures. The source, timing and availability of any financing will depend on global economic conditions, credit and financial market conditions, interest 
rates and other factors. If we issue additional equity securities or securities convertible into equity securities, our shareholders would suffer dilution of their 
investment, and it may adversely affect the market price of our ordinary shares. In addition, under Irish law, the directors of an Irish public limited 
company must have specific authority, as approved by the company’s shareholders, to allot and issue any ordinary shares (other than pursuant to employee 
equity plans) and, if such directors desire to allot and issue ordinary shares for cash, such shares must first be offered on the same or more favorable terms 
to the Company’s existing shareholders on a pro-rata basis, unless this statutory pre-emption right is disapplied by approval of the company’s shareholders. 
In May 2024, our shareholders renewed our board of directors’ general authority to allot and issue ordinary shares in an amount equal to approximately 
20% of our issued ordinary share capital (as of April 10, 2024), and to issue ordinary shares for cash on a non-pre-emptive basis in an amount equal to 
approximately 20% of our issued share capital (as of April 10, 2024); however, these share issuance authorities were granted for eighteen months only, at 
which point they will lapse unless renewed by our shareholders. If we are unable to obtain renewal of share issuance authorities from our shareholders, or 
are otherwise 

 
47
limited by the terms of new share issuance authorities approved by our shareholders, our ability to use our authorized but unissued share capital to effect or 
to fund acquisition or other transaction opportunities, or to otherwise raise capital, could be adversely affected.
In addition, future investors or lenders may demand, and may be granted, rights superior to those of existing shareholders. If we issue debt 
securities, we would likely be subject to restrictive covenants and debt service obligations that may impact our operations and financial condition. We 
cannot be certain that additional financing will be available from any of these sources when needed or, if available, will be on acceptable terms. If we fail to 
obtain additional capital if needed, we may not be able to execute our business strategy successfully.
Even if we are able to finance potential transactions without seeking any external financing, expenditure of a significant amount of cash on such 
transactions may require difficult capital allocation decisions and may limit our ability to pursue other important business and strategic objectives, may 
significantly impact our financial condition and profitability and limit our potential to return capital to shareholders. As a result of these and other potential 
impacts, the market price of our ordinary shares may fluctuate significantly.
Currency exchange rates may affect revenues and expenses. 
We conduct a large portion of our business in international markets. For example, we derive all of our XEPLION, TREVICTA and BYANNLI 
revenues from sales in countries other than the U.S., and these sales are denominated in non-U.S. dollar (“USD”) currencies. We also incur substantial 
operating costs in Ireland and face exposure to changes in the exchange ratio of the USD and the euro arising from expenses and payables at our Irish 
operations that are settled in euro. Our efforts to mitigate the impact of fluctuating currency exchange rates may not be successful. As a result, currency 
fluctuations among our reporting currency, USD, and the currencies in which we do business will affect our results of operations, often in unpredictable 
ways. See “Item 7A—Quantitative and Qualitative Disclosures about Market Risk” in this Annual Report for additional information relating to our foreign 
currency exchange rate risk. 
Risks Related to our Ordinary Shares 
The market price of our ordinary shares has been volatile and may continue to be volatile in the future, and could decline significantly.
The market price of our ordinary shares has fluctuated significantly from time to time. During the year ended December 31, 2024, the closing price 
of our ordinary shares on the Nasdaq Global Select Market ranged from $23.01 to $32.56 per share. The market price of our ordinary shares is likely to 
continue to be volatile and subject to significant price and volume fluctuations in response to market and industry factors, our results of operations, our 
ability to maintain and increase sales of our products, the success of our key development programs and expansion of our development pipeline and 
commercial portfolio, our ability to achieve and sustain profitability, the outcomes of business development transactions in which we may participate, our 
capital allocation decisions, and other factors, including the risk factors described in this Annual Report. We have also experienced significant volatility in 
the market price of our ordinary shares based on our business performance, including in relation to our commercial sales and the financial guidance that we 
issue for such sales, results from our clinical development programs, and events relating to regulatory actions and interactions related to our product 
candidates and commercial products.
In addition, the stock market in general, including the market for biopharmaceutical companies, has experienced extreme price and trading volume 
fluctuations that have often been unrelated or disproportionate to the operating performance of those companies. In particular, negative publicity regarding 
pricing and price increases by pharmaceutical companies, and potential legislation to regulate drug pricing, has negatively impacted, and may continue to 
negatively impact, the market for biopharmaceutical companies. These broad market and industry factors have harmed, and in the future may harm, the 
market price of our ordinary shares, regardless of our operating performance.
Our business could be negatively affected as a result of the actions of activist shareholders. 
Proxy contests and other actions by activist shareholders have been waged against many companies in our industry over the last several years. 
Activist shareholders may agitate, either publicly or privately, for changes to a company’s board of directors, management, structure, spend or strategic 
direction, among other things. 
Proxy contests and other actions by activist shareholders can be costly and time-consuming, disrupting operations and diverting the attention of 
management and employees, and can lead to perceived uncertainties as to the future direction of the Company or its business that may result in the loss of 
potential acquisitions, collaborations or in-licensing opportunities and make it more difficult to attract and retain qualified personnel and business partners. 
In addition, if individuals are elected to our board of directors with a specific agenda, it may adversely affect our ability to effectively implement our 
strategic plan in a timely manner and create additional value for our shareholders.

 
48
In recent years, we engaged in extensive dialogue with principals of Elliot Investment Management L.P. and Sarissa Capital Offshore Master Fund 
LP and their affiliates, resulting in negotiation of settlement arrangements in 2020 and 2021 pursuant to which directors were elected to our Board and a 
contested election in 2023. The extensive interactions and activities related to our engagement with activist shareholders required the expenditure of time, 
energy and expense by management and our board of directors and diverted employee and management attention from business operations.
Any future activist shareholder interactions, contests, actions or requests, or the mere public presence of activist shareholders among our shareholder 
base, could cause the market price of our ordinary shares to experience periods of significant volatility. 
Risks Related to Information Security and Data Privacy
Information security breaches and other disruptions could compromise our information and expose us to liability, which would cause our business and 
reputation to suffer. 
In the ordinary course of our business, we and our third-party service providers collect, store, maintain and transmit sensitive data, including IP, 
proprietary business information of ours and that of our suppliers and partners, as well as personally identifiable information of persons who use our 
medicines, clinical trial participants and employees. In addition, we outsource some of our operations to a number of third-party vendors who may have, or 
could gain, access to our confidential information. The secure maintenance of all such information and the secure performance of our information 
technology (“IT”) systems are critical to our operations and business strategy. 
As our dependency on, and the complexity of, our IT systems increases, the confidentiality, integrity and availability of our IT systems and the data 
that they store is critical to managing our business. While we take prudent measures to secure our IT systems, the risk still exists that such systems may 
become compromised by successful breaches, malfeasance, human error or technological fault. Moreover, the prevalent use of mobile devices to access 
confidential information, remote working practices, and the increased use of artificial intelligence present new and increased risk of security breaches. 
Cyber-attacks have increased in frequency, persistence, sophistication and intensity, often conducted by sophisticated and organized groups and individuals 
with a wide range of motives (including, but not limited to, industrial espionage, hacktivists and organized crime). In addition to the extraction of important 
information, such attacks could include the deployment of harmful malware, ransomware, denial-of-service attacks, social engineering and other means to 
affect service reliability and threaten the confidentiality, integrity and availability of our information. Certain types of attacks or breaches on our IT systems 
or infrastructure, or those of our licensees and third-party providers, may go undetected for a prolonged period. Although to our knowledge we have not 
experienced any material incident or interruption to date, any breakdown, invasion, corruption, destruction or breach of our, our partners’ or our third-party 
providers’ technology systems could compromise such IT systems, and the information stored there could be accessed, modified, publicly disclosed, lost or 
stolen. This could result in legal claims or proceedings and liability under laws that protect the privacy of personal information, demands for ransom or 
other forms of blackmail, disruptions to our development programs or commercial operations, damage to our reputation and adverse effects on our 
business. We retain cybersecurity insurance to cover costs and expenses related to a breach or similar event; however, there is no guarantee that such costs 
and expenses would not exceed the insurance that we retain.
We may be subject to numerous and varying privacy and security laws, and our failure to comply could result in penalties and reputational damage.
In the ordinary course of business, we may process personal data and other sensitive information, including proprietary and confidential business 
data, trade secrets, intellectual property, data we collect about trial participants in connection with clinical trials, patient data and sensitive third-party data. 
Our data processing activities subjects us to laws and regulations covering data privacy and the protection of personal information, including health 
information. The legislative and regulatory landscape for privacy and data protection continues to evolve, and there has been an increasing focus on privacy 
and data protection issues which may affect our business.
In the U.S., numerous federal and state laws and regulations, including state security breach notification laws, federal and state consumer protection 
laws, and state health information privacy laws (for example, the California Consumer Privacy Act of 2018 and the California Privacy Rights Act of 2020), 
govern the collection, use, disclosure, and protection of personal information. Such federal and state laws and regulations may require businesses to provide 
specific disclosures and implement processes to permit individuals to exercise certain privacy rights, which in each case could increase our potential 
liability, increase our compliance costs, and affect our ability to collect and use personal information. The privacy regulation landscape is rapidly evolving, 
and any changes to existing legislation or adoption of new state or federal regulations may further complicate compliance efforts and further increase legal 
risk and compliance costs for us and the third parties upon whom we rely. In addition, each of these current and potential future laws may be subject to 
varying interpretations by courts and government agencies, creating complex compliance issues for us and the third parties upon whom we rely. If we fail 
to comply with applicable laws and regulations, we could be subject to penalties or sanctions, including criminal penalties if we knowingly obtain or 
disclose individually identifiable health information from a covered entity in a manner that is not authorized or permitted by the Health Insurance 
Portability and Accountability Act of 1996, as amended by the Health Information Technology for Economic and Clinical Health Act (HIPAA).

 
49
Numerous other countries have, or are developing, laws governing the collection, use and transmission of personal information as well. The EU and 
other jurisdictions have adopted data protection laws and regulations, which impose significant compliance obligations. In the EU, for example, the GDPR 
governs the processing of personal data. The GDPR imposes significant obligations on controllers and processors of personal data, including high standards 
for obtaining consent from individuals to process their personal data, robust notification requirements to individuals about the processing of their personal 
data, a strong individual data rights regime, mandatory data breach notifications, limitations on the retention of personal data and stringent requirements 
pertaining to health data, and strict rules and restrictions on the transfer of personal data outside of the EU, including to the U.S. The GDPR also imposes 
additional obligations on, and required contractual provisions to be included in, contracts between companies subject to the GDPR and their third-party 
processors that relate to the processing of personal data. The GDPR allows EU member states to adopt additional laws and regulations in order to introduce 
further conditions, including limitations, with regard to the processing of genetic, biometric or health data.
Adoption of the GDPR increased our responsibility and liability in relation to personal data that we process and may require us to put in place 
additional mechanisms to ensure compliance. Any failure to comply with the requirements of GDPR and applicable national data protection laws of EU 
member states could lead to regulatory enforcement actions and significant administrative and/or financial penalties against us (fines of up to €20,000,000 
or up to 4% of the total worldwide annual turnover of the preceding financial year, whichever is higher), and could adversely affect our business, financial 
condition, cash flows and results of operations.
General Risk Factors
A future pandemic, epidemic or outbreak of an infectious disease, may materially and adversely affect our business, financial condition and results of 
operations.
Outbreaks of contagious diseases and other adverse public health developments affecting us and/or the third parties on which we rely could have a 
material and adverse effect on our business, financial condition and results of operations. For example, the COVID-19 pandemic, which impacted the 
operation of healthcare systems, global travel, supply and labor markets and other business and economic activity worldwide, had a disruptive and adverse 
impact on our financial condition and results of operations and on those of many of the third parties on which we rely.
Although the acute COVID-19 public health emergency has lapsed, we will continue to monitor its long-term impacts, including impacts on market 
practices and on the labor market, and adjust our policies and practices as needed to mitigate any adverse impacts to our business operations and financial 
condition. We will also work with our internal teams and the third-parties on which we rely to assess, and seek to mitigate, the potential impacts on our 
business operations and financial condition of any future outbreaks of contagious diseases or other adverse public health developments that may emerge 
from time to time.
If we identify a material weakness in our internal control over financial reporting, our ability to meet our reporting obligations and the trading price of 
our ordinary shares could be negatively affected. 
A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable 
possibility that a material misstatement of our financial statements will not be prevented or detected on a timely basis. Accordingly, a material weakness 
increases the risk that the financial information we report contains material errors. 
We regularly review and update our internal controls, disclosure controls and procedures, and corporate governance policies. In addition, we are 
required under the Sarbanes-Oxley Act of 2002 to report annually on our internal control over financial reporting. Any system of internal controls, however 
well designed and operated, is based in part on certain assumptions and can provide only reasonable, not absolute, assurances that the objectives of the 
system are met. If we, or our independent registered public accounting firm, determine that our internal controls over financial reporting are not effective, 
or we discover areas that need improvement in the future, these shortcomings could have an adverse effect on our business and financial results, and the 
price of our ordinary shares could be negatively affected. 
If we cannot conclude that we have effective internal control over our financial reporting, or if our independent registered public accounting firm is 
unable to provide an unqualified opinion regarding the effectiveness of our internal control over financial reporting, investors could lose confidence in the 
reliability of our financial statements, which could lead to a decline in the trading price of our ordinary shares. Failure to comply with reporting 
requirements could also subject us to sanctions and/or investigations by Nasdaq or the SEC or other regulatory authorities.

 
50
The increasing use of social media platforms and artificial intelligence tools present new risks and challenges. 
Social media is increasingly being used as a means of corporate communications and for purposes of social networking and commentary. We use 
social media tools to communicate certain information about our business, our employees, our company values and initiatives, to support disease state 
education in our areas of focus, and to provide information about our products or development programs. Additionally, the use of artificial intelligence 
tools (“AI”) is increasing in the biopharmaceutical industry and, as with many developing technologies, presents risks and challenges that could affect its 
further development, adoption and use. Despite our efforts to monitor evolving guidance regarding use of social media and AI and to comply with 
applicable rules, regulations and regulatory guidance, such practices are evolving and can be unclear. There is a risk that the use of social media and AI by 
us or our employees to communicate about our products or business or for other business purposes may cause us to be found in violation of applicable 
requirements and could result in regulatory actions or legal claims against us related to off-label marketing or other prohibited activities. In addition, our 
employees may knowingly or inadvertently engage on social media and with AI in ways that may not comply with our social media policy or guidelines 
with respect to AI or other legal, contractual or regulatory requirements. Any misuse of social media or AI may give rise to liability, lead to the loss of 
trade secrets and other IP, result in public disclosure of personal information of our employees, clinical trial participants, customers, patients using our 
products, or others, result in reputational harm or lead to other consequences. Negative or inaccurate posts or comments about us or our products on any 
social media or other public platforms could also damage our reputation, brand image and goodwill. Any of these events, if they were to occur, could cause 
us to incur liability, face overly restrictive regulatory actions or suffer reputational or other harm to our business.
 

 
51
Item 1B. Unresolved Staff Comments
None.
Item 1C. Cybersecurity
Risk Management and Strategy 
In the ordinary course of our business, we collect and store sensitive data, including IP, proprietary business information of ours and that of our 
suppliers and licensees, and personally identifiable information of persons who use our medicines, clinical trial participants and employees. Our licensees 
and third-party providers also possess certain of our sensitive data. The secure maintenance of such information and the secure performance of our 
information technology (“IT”) systems are critical to our operations and business strategy. As our dependency on, and the complexity of, our IT systems 
increases, the confidentiality, integrity and availability of our IT systems and the data that they store is critical to managing our business.
Our Information Security Management System (“ISMS”) is a key element of our information security program, designed to identify, assess, help 
mitigate, and monitor IT risks across our organization, including information security risks. The ISMS is informed by the structured principles of 
International Standard- ISO/IEC27001:2022 (Information security, cybersecurity, and privacy protection), which outlines guidance for the establishment, 
implementation, maintenance, and improvement of information security management systems. Our ISMS is comprised of processes designed to identify 
cybersecurity risks, safeguard information assets and preserve the confidentiality, integrity, and availability of information owned, managed and maintained 
by us. Our ISMS includes formal written policies and procedures, technical security controls, such as automated tools designed to detect and prevent 
cybersecurity incidents, and programs designed to promote internal and third-party IT risk management, audit management, incident response and security 
awareness, including employee awareness trainings and other initiatives. Our ISMS includes periodic security audits, vulnerability assessments and 
penetration testing to proactively identify potential system vulnerabilities. Our ISMS is periodically assessed by third-party assessors and the results of such 
assessments, including any cybersecurity risks and related mitigations identified, are reported to the audit and risk committee of our board of directors, as 
described below, and are used by us to improve our ISMS and our broader information security program. 
As part of our information security program, we also have processes in place for management of cybersecurity risks associated with third-party 
handling of our confidential information, including in such third parties’ provision of critical services on our behalf. We conduct due diligence of our third-
party vendors through an assessment of their security practices and overall risk profile, including through their completion of vendor assessment 
questionnaires and ongoing monitoring of such third parties, utilizing tools such as security ratings services and periodic reassessment questionnaires. 
As of the date of this Annual Report, we have not experienced any information security incidents that have materially affected, or are reasonably 
likely to materially affect, our business strategy, results of operations, or financial condition, and we have not identified any current cybersecurity threats 
that we believe are reasonably likely to materially affect our business strategy, results of operations, or financial condition. 
Governance and Oversight
We have a multi-layered information security governance framework in place to provide oversight of our information security program and strategy, 
our ISMS, and related risks and opportunities. This governance framework includes procedures for escalation of identified information security risks, 
threats or incidents through various management levels, including up to our Information Security Governing Body, which is comprised of our Chief 
Executive Officer, Chief Information Officer, Chief Operating Officer, Chief Financial Officer, Chief Legal Officer and other members of management, 
and as appropriate, up to our board of directors. 
Our information security team is responsible for developing, implementing and overseeing our Company-wide information security strategy and 
related policies and practices. This team works cross-functionally throughout our organization to assess and prepare the Company for identification and 
mitigation of, and if necessary respond to, information security risks. The information security team is led by our Chief Information Officer, who has over 
35 years of experience in various information technology roles, including 18 years at the Company serving in roles with increasing levels of responsibility. 
Our Vice President of Information Security and Technology, a Certified Information Systems Security Professional, with over 20 years of global 
experience in various information security roles, including 14 years of experience at the Company, is responsible for day-to-day management of 
information security team initiatives. The other members of the information security team have extensive IT, IT security and cloud industry experience, as 
well as certifications pertaining to information security and privacy (such as Certified Information Security Manager, Certified Information Privacy 
Technologist, GIAC Security Essentials and GIAC Information Security Professional certifications). 

 
52
Our board of directors, as a whole and through its committees, has responsibility for the oversight of risk management. The audit and risk committee 
of our board of directors specifically oversees critical risks and opportunities facing the Company and, in this context, reviews and provides feedback on 
our company-wide enterprise risk management program, which encompasses risks related to IT and cybersecurity and mitigations put in place, or to be put 
in place, in response to such risks and opportunities. The audit and risk committee periodically reports to the full board of directors regarding its oversight 
of the Company’s enterprise risk management program and periodic risk assessment results. In addition, our board of directors receives periodic updates 
from our CIO and Vice President of Information Security on our ISMS and other information security initiatives, and on our information security 
governance framework.
Item 2. Properties
We lease an approximately 14,600 square foot corporate office space in Dublin, Ireland, which is our corporate headquarters. This lease expires in 
2027 and does not include an additional tenant option to further extend the term. 
We lease an approximately 231,000 square foot corporate office and R&D center in Waltham, Massachusetts. This lease, which commenced in 
January 2020, expires in 2035 and includes a tenant option to extend the term for an additional ten-year period. We serve as the guarantor of a lease 
assigned to Mural Oncology, Inc., a subsidiary of Mural Oncology plc, for a facility in Waltham, Massachusetts with approximately 180,000 square feet of 
corporate offices, administrative areas and laboratories. This lease expires in 2026 and includes a tenant option to extend the term for an additional five-
year period.
 We lease an approximately 7,000 square foot corporate office and administrative space in Washington, DC. This lease expires in 2029 and includes 
a tenant option to extend the term for an additional five-year period. 
We own an approximately 375,000 square foot manufacturing facility in Wilmington, Ohio. 
We believe that our current facilities are suitable and adequate for our current and near-term preclinical, clinical and commercial requirements.
Item 3. Legal Proceedings
For information regarding legal proceedings, refer to the discussion under the heading “Litigation” in Note 19, Commitments and Contingent 
Liabilities in the “Notes to Consolidated Financial Statements” in this Annual Report, which discussion is incorporated, in relevant part, into this Item 3 by 
reference.
Item 4. Mine Safety Disclosures
Not Applicable.

 
53
PART II
Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
Market and shareholder information
Our ordinary shares are traded on the Nasdaq Global Select Market under the symbol “ALKS.” There were 87 shareholders of record of our 
ordinary shares on February 7, 2025.
Dividends
No dividends have been paid on our ordinary shares to date, and we do not expect to pay cash dividends thereon in the foreseeable future. We 
anticipate that we will generally retain a significant portion of our earnings to support our operations and our proprietary drug development programs. Any 
future determination as to the payment of dividends, if at all, will be at the sole discretion of our board of directors and will depend on our financial 
condition, results of operations, capital requirements and other factors that our board of directors and management deem relevant.
Repurchase of equity securities
In February 2024, our board of directors authorized a share repurchase program to repurchase ordinary shares of the Company in an aggregate 
amount of up to $400.0 million (exclusive of any fees, commissions or other expenses related to such repurchases) from time to time on the open market 
(the “Repurchase Program”). The timing and amount of any share repurchases under the Repurchase Program will be based on a variety of factors, 
including but not limited to ongoing assessments of our capital needs, alternative investment opportunities, the market price of our ordinary shares and 
general market conditions. The Repurchase Program has no set expiration date and may be suspended or discontinued at any time. During the year ended 
December 31, 2024, we repurchased approximately 7.9 million of our ordinary shares under the Repurchase Program at an average price of $25.33, 
resulting in a total cost, exclusive of any fees, commissions or other expenses related to such repurchase, of $200.0 million. All ordinary shares repurchased 
were returned to treasury. As of December 31, 2024, the remaining amount authorized under the Repurchase Program was $200.0 million, exclusive of any 
fees, commissions or other related expenses.
The following table sets forth our share repurchase activity for the three months ended December 31, 2024:
 
Period
 
Total Number of 
Ordinary Shares 
Purchased

(a)
 
 
Average Price Paid per 
Ordinary Share

(b)
   
Total Number of 
Ordinary Shares 
Purchased as Part of 
Publicly Announced 
Program

(c)
   
Approximate Dollar 
Value (in millions) of 
Ordinary Shares that 
May Yet Be Purchased 
Under the Program 

(d)
 
October 1, 2024 – October 31, 2024
   
4,686  
   
28.74  
   
—    
$
200.0  
November 1, 2024 – November 30, 2024
   
3,727  
   
27.41  
   
—    
$
200.0  
December 1, 2024 – December 31, 2024
   
3,413  
   
31.43  
   
—    
$
200.0  
Totals
   
11,826    
$
29.10    
 
—    
   
 
(1)
Consists of ordinary shares acquired during the three months ended December 31, 2024 to satisfy tax withholding obligations related to the vesting of equity awards.
(2)
In February 2024, we announced approval by our board of directors of the Repurchase Program, which authorized the repurchase of our ordinary shares in an aggregate amount of 
up to $400.0 million (exclusive of any fees, commissions or other expenses related to such repurchases) from time to time. The specific timing and amounts of repurchases under 
the Repurchase Program will depend on a variety of factors, including but not limited to ongoing assessments of our needs, alternative investment opportunities, the market price 
of our ordinary shares and general market conditions. The Repurchase Program has no set expiration date and may be suspended or discontinued at any time.
Irish taxes applicable to U.S. holders
The following is a general summary of the main Irish tax considerations applicable to the purchase, ownership and disposition of our ordinary shares 
by U.S. holders. It is based on existing Irish law and practices in effect on January 6, 2025, and on discussions and correspondence with the Irish Revenue 
Commissioners. Legislative, administrative or judicial changes may modify the tax consequences described below.
(1)
(2)
(2)

 
54
The statements do not constitute tax advice and are intended only as a general guide. Furthermore, this information applies only to our ordinary 
shares held as capital assets and does not apply to all categories of shareholders, such as dealers in securities, trustees, insurance companies, collective 
investment schemes and shareholders who acquire, or who are deemed to acquire, their ordinary shares by virtue of an office or employment. The 
statements are in reference to individuals who are considered non-resident and non-ordinarily resident of Ireland for tax purposes. This summary is not 
exhaustive and shareholders should consult their own tax advisers as to the tax consequences in Ireland, or other relevant jurisdictions where we operate, 
including the acquisition, ownership and disposition of ordinary shares.
Withholding tax on dividends
While we have no current plans to pay dividends, dividends on our ordinary shares would generally be subject to Irish dividend withholding tax 
(“DWT”) at 25%, unless an exemption applies. Dividends on our ordinary shares that are owned by residents of the U.S. and held beneficially through the 
Depositary Trust Company (“DTC”) will not be subject to DWT provided that the address of the beneficial owner of the ordinary shares in the records of 
the broker is in the U.S.
Dividends on our ordinary shares that are owned by residents of the U.S. and held directly (outside of DTC) will not be subject to DWT provided 
that the shareholder that is the beneficial owner of such ordinary shares has completed the appropriate Irish DWT form and this form remains valid. Such 
shareholders must provide the appropriate Irish DWT form to our transfer agent at least seven business days before the record date for the first dividend 
payment to which they are entitled.
If any shareholder who is resident in the U.S. receives a dividend subject to DWT, they should generally be able to make an application for a refund 
from the Irish Revenue Commissioners on the prescribed form.
Income tax on dividends
Irish income tax, if any, may arise in respect of dividends paid by us. However, a shareholder who is neither resident nor ordinarily resident in 
Ireland and who is entitled to an exemption from DWT, generally has no liability for Irish income tax or to the universal social charge on a dividend from 
us, unless they holds their ordinary shares through a branch or agency in Ireland which carries out a trade on their behalf.
Irish tax on capital gains
A shareholder who is neither resident nor ordinarily resident in Ireland and does not hold our ordinary shares in connection with a trade or business 
carried on by such shareholder in Ireland through a branch or agency, should not be within the scope of the charge to Irish tax on capital gains on a disposal 
of our ordinary shares. A shareholder who is an individual and who is temporarily not resident in Ireland may, under Irish anti-avoidance legislation, still 
be liable for Irish tax on capital gains on any chargeable gain realized upon the disposal of our ordinary shares during the period in which such individual is 
a non-resident.
Capital acquisitions tax
Irish capital acquisitions tax (“CAT”) is comprised principally of gift tax and inheritance tax. CAT could apply to a gift or inheritance of our 
ordinary shares irrespective of the place of residence, ordinary residence or domicile of the parties. This is because our ordinary shares are regarded as 
property situated in Ireland as our share register must be held in Ireland. The person who receives the gift or inheritance has primary liability for CAT.
CAT is levied at a rate of 33% above certain tax-free thresholds. The appropriate tax-free threshold is dependent upon (i) the relationship between 
the donor and the recipient, and (ii) the aggregation of the values of previous gifts and inheritances received by the recipient from persons within the same 
category of relationship for CAT purposes. Gifts and inheritances passing between spouses are exempt from CAT. Our shareholders should consult their 
own tax advisers as to whether CAT is creditable or deductible in computing any domestic tax liabilities.
Stamp duty
Irish stamp duty, if any, may become payable in respect of ordinary share transfers. However, a transfer of our ordinary shares effected by means of 
book-entry interests in DTC will not be subject to Irish stamp duty.  A transfer of our ordinary shares (i) by a seller who holds ordinary shares outside of 
DTC to any buyer, or (ii) by a seller who holds the ordinary shares through DTC to a buyer who holds the acquired ordinary shares outside of DTC, may be 
subject to Irish stamp duty, which is currently at the rate of 1% of the price paid or the market value of the ordinary shares acquired, if greater. The person 
accountable for payment of stamp duty is the buyer or, in the case of a transfer by way of a gift or for less than market value, all parties to the transfer.
A shareholder who holds ordinary shares outside of DTC may transfer those ordinary shares into DTC without giving rise to Irish stamp duty 
provided that the shareholder would be the beneficial owner of the related book-entry interest in those ordinary shares recorded in the systems of DTC, and 
in exactly the same proportions, as a result of the transfer and at the time of the transfer into DTC there is no sale of those book-entry interests to a third 
party being contemplated by the shareholder. Similarly, a shareholder who 

 
55
holds ordinary shares through DTC may transfer those ordinary shares out of DTC without giving rise to Irish stamp duty provided that the shareholder 
would be the beneficial owner of the ordinary shares, and in exactly the same proportions, as a result of the transfer, and at the time of the transfer out of 
DTC there is no sale of those ordinary shares to a third party being contemplated by the shareholder.
In order for the share registrar to be satisfied as to the application of this Irish stamp duty treatment where relevant, the shareholder must confirm to 
us that the shareholder would be the beneficial owner of the related book-entry interest in those ordinary shares recorded in the systems of DTC, and in 
exactly the same proportions or vice-versa, as a result of the transfer and there is no agreement for the sale of the related book-entry interest or the ordinary 
shares or an interest in the ordinary shares, as the case may be, by the shareholder to a third party being contemplated.
Stock performance graph
The information contained in the performance graph and related information below shall not be deemed to be “soliciting material” or to be “filed” 
with the SEC, and such information shall not be incorporated by reference into any future filing under the Securities Act or the Exchange Act, except to the 
extent that we specifically incorporate it by reference into such filing.
The following graph compares the cumulative total shareholder return on our ordinary shares from December 31, 2019 through December 31, 2024 
with the cumulative returns of the Nasdaq Composite Total Return Index and the Nasdaq Biotechnology Index. The comparison assumes $100 was 
invested on December 31, 2019 in our ordinary shares and in each of the foregoing indices and further assumes reinvestment of any dividends. We did not 
declare or pay any dividends on our ordinary shares during the comparison period.
 
 
 
 
 
Year Ended December 31,
 
 
 
2019
 
2020
   
2021
   
2022
   
2023
   
2024
 
Alkermes
 
100    
98      
114      
128      
136      
141  
Nasdaq Composite Total Return
 
100    
145      
177      
119      
173      
224  
Nasdaq Biotechnology Index
 
100    
126      
126      
114      
119      
118  
Item 6. [Reserved]
Not applicable. 
 

 
56
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations
The following should be read in conjunction with our consolidated financial statements and related notes beginning on page F-1 of this Annual 
Report. The following discussion contains forward-looking statements. Actual results may differ significantly from those projected in the forward-looking 
statements. See “Cautionary Note Concerning Forward-Looking Statements” on page 3 of this Annual Report. Factors that might cause future results to 
differ materially from those projected in the forward-looking statements also include, but are not limited to, those discussed in “Item 1A—Risk Factors” 
and elsewhere in this Annual Report. A detailed discussion of our 2022 financial condition and results of operations, and of 2023 year-over-year changes as 
compared to 2022, can be found in “Item 7—Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Annual 
Report on Form 10-K for the year ended December 31, 2023, which was filed with the SEC on February 21, 2024.
Overview
We have a portfolio of proprietary products that we manufacture, market and sell in the U.S.—VIVITROL, ARISTADA, ARISTADA INITIO and 
LYBALVI. We also earn manufacturing and/or royalty revenues on net sales of products commercialized by our licensees, the most significant of which in 
2024 were the long-acting INVEGA products and VUMERITY. We expect VIVITROL, ARISTADA, ARISTADA INITIO, LYBALVI and VUMERITY 
to generate significant revenues for us in the near- and medium-term as we believe these products are singular or competitively advantaged products in 
their classes.
In 2024, our net income from continuing operations was $372.1 million, as compared to $519.2 million in 2023. The decrease in net income from 
continuing operations was primarily due to two significant one-time events in 2023, which were the receipt in June 2023 of back royalties and interest in 
respect of 2022 U.S. sales of the long-acting INVEGA products, following the successful outcome of the arbitration proceedings related to such products, 
and the partial release of our valuation allowance maintained against certain Irish deferred tax assets. These events were partially offset by an increase in 
our product sales, net and a decrease in our operating expenses in 2024. These items are discussed in further detail within the “Results of Operations” 
section below.
Business Update
In May 2024, we completed the sale of the Athlone Facility to Novo and entered into subcontracting arrangements to continue certain development 
and manufacturing activities performed at the Athlone Facility, which may continue through the end of 2025. 
In November 2023, we completed the separation of our former oncology business into a new, independent, publicly-traded company (the 
“Separation”), which is more fully described in Note 3, Discontinued Operations, in the “Notes to Consolidated Financial Statements” in this Annual 
Report. 
Results of Operations
As a result of the Separation, the historical results of our former oncology business have been reflected as discontinued operations in our 
consolidated financial statements through November 15, 2023, the date of the Separation. Prior period results of operations and balance sheet information 
have been recast to reflect this presentation. 
Product Sales, Net
Our product sales, net, consist of sales of VIVITROL, ARISTADA, ARISTADA INITIO, and LYBALVI, primarily to wholesalers, specialty 
distributors and pharmacies. The following table presents the adjustments deducted from product sales, gross to arrive at product sales, net, for sales of 
these products during the years ended December 31, 2024 and 2023:
 
 
Year Ended
   
 
December 31,
   
(In millions, except for % of Sales)
2024
   
% of Sales
   
 
2023
   
% of Sales
   
Product sales, gross
$
2,119.5      
100.0   %   $
1,855.4      
100.0   %
Adjustments to product sales, gross:
 
     
   
   
     
   
Medicaid rebates
 
(454.0 )    
(21.4 ) %    
(426.4 )    
(23.0 ) %
Chargebacks
 
(231.5 )    
(10.9 ) %    
(189.1 )    
(10.2 ) %
Product discounts
 
(155.1 )    
(7.3 ) %    
(137.7 )    
(7.4 ) %
Medicare Part D
 
(83.0 )    
(3.9 ) %    
(74.4 )    
(4.0 ) %
Other
 
(112.4 )    
(5.4 ) %    
(107.8 )    
(5.8 ) %
Total adjustments
 
(1,036.0 )    
(48.9 ) %    
(935.4 )    
(50.4 ) %
Product sales, net
$
1,083.5      
51.1   %   $
920.0      
49.6   %
 

 
57
VIVITROL product sales, gross, increased by 10%, which was primarily due to a 7% increase in the number of units sold and a 3.2% increase in the 
selling price that went into effect in January 2024. ARISTADA and ARISTADA INITIO product sales, gross, increased by 5%, which was primarily due to 
a 3% increase in the number of units sold and a 3.0% increase in the selling price that went into effect in January 2024. LYBALVI product sales, gross, 
increased by 52%, which was primarily due to a 45% increase in the number of units sold and increases of 3.8% and 2.0% in the selling price that went into 
effect in January 2024 and July 2024, respectively.
The decrease in Medicaid rebates as a percentage of sales was primarily due to the increase in sales of LYBALVI, which has lower Medicaid 
utilization than VIVITROL, ARISTADA and ARISTADA INITIO, and actual Medicaid utilization rates related to VIVITROL being lower than original 
estimates, due, in part, to $8.7 million in actual credits received in the fourth quarter of 2024 from certain states related to duplicate Medicaid billings.
The following table compares product sales, net earned during the years ended December 31, 2024 and 2023:
 
 
Year Ended December 31,
   
 
 
(In millions)
2024
    
2023
    
Change
 
VIVITROL
$
457.3     $
400.4     $
56.9  
ARISTADA and ARISTADA INITIO
 
346.2      
327.7      
18.5  
LYBALVI
 
280.0      
191.9      
88.1  
Product sales, net
$
1,083.5     $
920.0     $
163.5  
A number of companies currently market and/or are developing products to treat addiction, including alcohol and opioid dependence, that may 
compete with, and negatively impact, future sales of VIVITROL. Increased competition may lead to reduced unit sales of VIVITROL and increased pricing 
pressure. The latest to expire of our patents covering VIVITROL will expire in 2029 in the U.S. Pursuant to the terms of a confidential settlement and 
license agreement entered into in August 2023 with Teva, we granted Teva a non-exclusive, royalty-free, non-transferable, non-sublicensable limited 
license under the remaining patent covering VIVITROL to market and sell a generic version of VIVITROL in the U.S. beginning on the First Entry Date, 
or earlier under certain circumstances. Under the terms of a settlement and license agreement entered into in July 2019 with Amneal, we granted Amneal a 
non-exclusive license under certain patents covering VIVITROL, including the remaining patent covering VIVITROL in the U.S., to market and sell a 
generic formulation of VIVITROL in the U.S. beginning on the earlier of the First Entry Date, sometime in 2028 or earlier under certain circumstances. 
A number of companies currently market and/or are developing products to treat schizophrenia and/or bipolar I disorder that may compete with and 
negatively impact future sales of ARISTADA, ARISTADA INITIO and LYBALVI. Increased competition may lead to reduced unit sales of ARISTADA, 
ARISTADA INITIO and LYBALVI and increased pricing pressure. The latest to expire of our patents covering ARISTADA, ARISTADA INITIO and 
LYBALVI in the U.S. will expire in 2039, 2039 and 2041, respectively; and, as such, we do not anticipate any generic versions of these products to enter 
the market in the near term. 
Manufacturing and Royalty Revenues
Manufacturing revenue from RISPERDAL CONSTA and VUMERITY are recognized at the point in time that the product has been fully 
manufactured. Royalties earned on our licensees’ net sales of products using our proprietary technologies are recognized in the period such products are 
sold by our licensees. The following table compares manufacturing and royalty revenues earned in the years ended December 31, 2024 and 2023:
 
 
 
   
 
 
 
Year Ended December 31,
   
 
 
(In millions)
2024
    
2023
    
Change
 
Manufacturing and royalty revenues:
 
   
 
   
 
 
Long-acting INVEGA products
$
236.5    
$
486.1    
$
(249.6 )
VUMERITY
 
134.0    
 
129.3    
 
4.7  
RISPERDAL CONSTA
 
23.5    
 
37.3    
 
(13.8 )
Other
 
80.1  
   
90.7  
   
(10.6 )
Manufacturing and royalty revenues
$
474.1    
$
743.4    
$
(269.3 )
 
The decrease in royalty revenues related to the long-acting INVEGA products was primarily due to the receipt in June 2023 of back royalties of 
$195.4 million, inclusive of $8.1 million in late-payment interest, related to 2022 U.S. sales of the long-acting INVEGA products following the successful 
outcome of the arbitration proceedings related to such products and the expiration of our royalty on U.S. net sales of INVEGA SUSTENNA in August 
2024. Pursuant to the Final Award issued in the arbitration proceedings, 

 
58
we are entitled to royalty revenues from Janssen related to U.S. net sales of INVEGA TRINZA and INVEGA HAFYERA through certain specified dates in 
2030. We expect royalty revenues from net sales of the long-acting INVEGA products to decrease further in 2025, as the royalty revenues related to U.S. 
net sales of INVEGA SUSTENNA comprised a significant portion of the overall royalty revenues for the long-acting INVEGA products.
 
For additional discussion of our agreements with Janssen related to the long-acting INVEGA products, including the royalty provisions set forth 
therein and the related arbitration proceedings and outcome, see the section entitled “Collaborative Arrangements—Janssen” in “Item 1—Business” in this 
Annual Report.
 
In addition, each of INVEGA SUSTENNA and INVEGA TRINZA is currently subject to Paragraph IV litigation in response to companies seeking 
to market generic versions of such product. Increased competition from new products or generic versions of any one or more of the long-acting INVEGA 
products may lead to reduced unit sales of the long-acting INVEGA products, including those not yet genericized, and increased pricing pressure. For a 
discussion of legal proceedings related to INVEGA TRINZA, see Note 19, Commitments and Contingent Liabilities in the “Notes to Consolidated 
Financial Statements” in this Annual Report, and for information about risks relating to these legal proceedings, see “Item 1A—Risk Factors” in this 
Annual Report, and specifically the section entitled “Uncertainty over IP in the biopharmaceutical industry has been the source of litigation and other legal 
proceedings, and we or our licensees may face claims against IP rights covering our products and competition from generic drug manufacturers.”
The increase in VUMERITY revenue was due to an $8.3 million increase in royalty revenue, partially offset by a $3.6 million decrease in 
manufacturing revenue. The increase in royalty revenue was primarily due to an increase in end-market sales of VUMERITY to $628.0 million in 2024, as 
compared to $576.3 million in 2023. The decrease in manufacturing revenue was primarily due to a reduction in the selling price. The manufacturing fee 
we earn is based on our cost to produce VUMERITY. As the assets used to manufacture VUMERITY were classified as held for sale and transferred to 
Novo in connection with the sale of the Athlone Facility, depreciation expense was removed from the manufacturing cost base, which had a negative 
impact on our manufacturing fee. For a discussion of our agreements with Biogen related to VUMERITY, including the manufacturing and royalty revenue 
provisions set forth therein, see the section entitled “Collaborative Arrangements—Biogen” in “Item 1—Business” in this Annual Report. 
The decrease in revenue from RISPERDAL CONSTA was primarily due to a decrease of $13.0 million in manufacturing revenue, which was 
primarily due to a decrease in the number of batches made available to Janssen. The decrease in royalty revenue was due to expirations of the patents 
covering RISPERDAL CONSTA, which expired in the U.S. in January 2023 and in the EU in 2021. We expect revenues from RISPERDAL CONSTA to 
continue to decrease as patents covering RISPERDAL CONSTA continue to expire in markets where end-market net sales of RISPERDAL CONSTA 
occur. We are aware of potential generic and other competition to RISPERDAL CONSTA that may lead to reduced unit sales and increased pricing 
pressure. For a discussion of our agreements with Janssen related to RISPERDAL CONSTA, including the manufacturing provisions set forth therein, see 
the section entitled “Collaborative Arrangements—Janssen” in “Item 1—Business” in this Annual Report.
During the years ended December 31, 2024 and 2023, we recognized $36.6 million and $49.9 million, respectively, in manufacturing and royalty 
revenue related to FAMPYRA which is included within “Other” in the table above. As of December 31, 2024, our manufacturing obligations related to 
FAMPYRA concluded. Accordingly, we do not expect to recognize any revenues related to FAMPYRA going forward.
Certain of our manufacturing and royalty revenues are earned in countries outside of the U.S. and are denominated in currencies in which the 
product is sold. See “Item 7A—Quantitative and Qualitative Disclosures about Market Risk” in this Annual Report for information on currency exchange 
rate risk related to our revenues and “Item 1A—Risk Factors” in this Annual Report, and specifically the section entitled “Currency exchange rates may 
affect revenues and expenses” for risks related to currency exchange rates. 
Costs and Expenses
Cost of Goods Manufactured and Sold
 
 
 
   
 
 
 
Year Ended December 31,
   
 
 
(In millions)
2024
   
2023
   
Change
 
Cost of goods manufactured and sold
$
245.3     $
253.0     $
(7.7 )
 

 
59
The decrease in cost of goods manufactured and sold was primarily due to lower cost of goods manufactured for certain legacy products due to a 
decrease in volumes of such products. This includes RISPERDAL CONSTA as well as products manufactured at the Athlone Facility. This decrease was 
partially offset by an increase in the cost of goods sold for certain of our proprietary products due to increases in the number of units sold as discussed 
above, and an increase in costs related to VIVITROL out-of-specification batches and subsequent investigation costs. 
Research and Development Expenses
For each of our R&D programs, we incur both external and internal expenses. External R&D expenses include fees for clinical and preclinical 
activities performed by CROs, consulting fees, and costs related to laboratory services, the purchase of drug product materials and third-party 
manufacturing development activities. Internal R&D expenses include employee-related expenses, occupancy costs, depreciation and general overhead. We 
track external R&D expenses for each of our development programs; however, internal R&D expenses are not tracked by individual program as they can 
benefit multiple development programs or our products or technologies in general. 
The following table sets forth our external R&D expenses for the years ended December 31, 2024 and 2023 relating to our then-current development 
programs and our internal R&D expenses, listed by the nature of such expenses:
 
 
 
 
   
 
 
 
 
Year Ended December 31,
   
 
 
(In millions)
 
2024
   
2023
   
Change
 
External R&D expenses:
   
     
     
 
Development programs:
   
     
     
 
ALKS 2680
  $
46.0     $
31.3     $
14.7  
LYBALVI
   
18.7      
15.4      
3.3  
Other external R&D expenses
   
36.6      
51.7      
(15.1 )
Total external R&D expenses
   
101.3      
98.4      
2.9  
Internal R&D expenses:
   
     
     
 
Employee-related
   
114.5      
128.3      
(13.8 )
Occupancy
   
11.2      
12.3      
(1.1 )
Depreciation
   
5.7      
9.6      
(3.9 )
Other
   
12.6      
22.2      
(9.6 )
Total internal R&D expenses
   
144.0      
172.4      
(28.4 )
Research and development expenses
  $
245.3     $
270.8     $
(25.5 )
 
These amounts are not necessarily predictive of future R&D expenses. In an effort to allocate our spending most effectively, we continually evaluate 
our products under development based on the performance of such products in preclinical and/or clinical trials, our expectations regarding the likelihood of 
their regulatory approval and our view of their future potential commercial viability, among other factors.
 
The increase in expenses related to ALKS 2680 was primarily due to an increase in spend related to the advancement of the development programs 
for the product, including completion of our phase 1b proof-of-concept studies, initiation of our phase 2 clinical studies, Vibrance-1 and Vibrance-2 and 
preparatory spend in advance of initiation of our phase 2 study for IH. The increase in expenses related to LYBALVI was primarily due to increased spend 
on our pediatric studies related to the product, partially offset by decreased spend following the completion of our long-term safety and tolerability studies. 
The decrease in other external R&D expenses was primarily due to identifying cost-effective resourcing options for clinical programming and outsourced 
data management services and decreases in spend on activities associated with certain of our research programs. The decrease in employee-related 
expenses was primarily due to a decrease in salaries and benefits related to a 10% reduction in R&D-related headcount during 2024. 
 
Selling, General and Administrative Expenses
 
 
 
 
   
 
 
 
 
Year Ended December 31,
   
 
 
(In millions)
 
2024
   
2023
   
Change
 
Selling and marketing expense
  $
446.2     $
490.2     $
(44.0 )
General and administrative expense
   
199.0      
199.6      
(0.6 )
Selling, general and administrative expense
  $
645.2     $
689.8     $
(44.6 )
 

 
60
 
The decrease in selling and marketing expense was primarily due to a $34.6 million decrease in marketing expense related primarily to decreased 
media spend and free goods, a $7.1 million decrease in professional services, primarily due to the decrease in media spend, and a $3.6 million decrease in 
employee related expenses, primarily due to a 7% decrease in sales and marketing headcount.
Amortization of Acquired Intangible Assets
 
 
 
Year Ended
   
 
 
 
 
December 31,
   
 
 
(In millions)
 
2024
   
2023
   
Change
 
Amortization of acquired intangible assets
  $
1.1     $
35.7     $
(34.6 )
 
Our amortizable intangible assets primarily consisted of technology and collaborative arrangements acquired as part of the acquisition of Elan Drug 
Technologies (“EDT”) in September 2011. These intangible assets were amortized over 12 to 13 years using the economic use method, which reflects the 
pattern that the economic benefits of the intangible assets are consumed as revenue is generated from the underlying patent or contract, and became fully 
amortized during 2024. 
Other Income, Net
 
 
 
 
   
 
 
 
 
Year Ended December 31,
   
 
 
(In millions)
 
2024
   
2023
   
Change
 
Interest income
  $
42.5     $
30.9     $
11.6  
Interest expense
   
(22.6 )    
(23.0 )    
0.4  
Other income (expense), net
   
3.2      
(0.5 )    
3.7  
Total other income, net
  $
23.1     $
7.4     $
15.7  
 
Interest income consists of interest earned on our cash and available-for-sale investments. The increase in interest income was due to an increase in 
our cash and investments and increases in interest rates due to the rising interest rate environment. Interest expense consists of interest incurred on our 
previously outstanding term loans scheduled to become due in 2026 (the “Former Term Loans”) under our former amended and restated credit agreement 
(the “Former Credit Agreement”), which we prepaid in full and terminated on December 19, 2024.
 
The increase in other income (expense), net was primarily due to the gain on the sale of the Athlone Facility of approximately $1.5 million, 
following the completion of the sale in May 2024.
Income Tax Provision (Benefit) 
 
 
 
 
   
 
 
 
 
Year Ended December 31,
   
 
 
(In millions)
 
2024
   
2023
   
Change
 
Income tax provision (benefit)
  $
71.6     $
(97.6 )   $
169.2  
The income tax provision in 2024 was primarily due to taxes on income earned in Ireland. The income tax benefit in 2023 was primarily attributable 
to the partial release of the valuation allowance maintained against certain Irish deferred tax assets, partially offset by taxes on income earned in the U.S. 
and Ireland. Our effective tax rate during the year ended December 31, 2024 was 16.1%, which exceeds the Irish statutory tax rate of 12.5%, primarily due 
to non-deductible expenses and income that was taxable at rates higher than the Irish statutory tax rate. The new corporate minimum tax rate of 15.0% did 
not have a material impact on our business in 2024.
Cumulative unremitted earnings of U.S. subsidiaries totaled approximately $933.5 million as of December 31, 2024. In the event of a repatriation of 
those earnings in the form of dividends or otherwise, we may be liable for income taxes, subject to adjustment, if any, for foreign tax credits and foreign 
withholding taxes payable to foreign tax authorities. We estimate that approximately $72.0 million of income taxes would be payable on the repatriation of 
the unremitted earnings to Ireland.
As of December 31, 2024, we had $393.9 million of Irish NOL carryforwards, $14.1 million of U.S. federal NOL carryforwards, $43.2 million of 
state NOL carryforwards and $34.0 million of state tax credits which will either expire on various dates through 2039 or can be carried forward 
indefinitely. These loss and credit carryforwards are available to reduce certain future Irish and foreign taxable income and tax. These loss and credit 
carryforwards are subject to review and possible adjustment by the appropriate taxing authorities, and may be subject to limitations based upon changes in 
the ownership of our ordinary shares. Included within these loss and credit carryforwards are $14.1 million of U.S. federal NOL carryforwards and $5.8 
million of state NOL 

 
61
carryforwards, acquired as part of the acquisition of Rodin Therapeutics, Inc. (“Rodin”) in November 2019, each of which are subject to a $0.5 million 
annual limitation.
Liquidity and Capital Resources
Our financial condition is summarized as follows:
 
 
 
December 31, 2024
   
December 31, 2023
 
(In millions)
 
U.S.
   
Ireland
   
Total
   
U.S.
   
Ireland
   
Total
 
Cash and cash equivalents
  $
70.3     $
220.8     $
291.1     $
317.8     $
139.7     $
457.5  
Investments—short-term
   
203.6      
256.9      
460.5      
187.6      
128.4      
316.0  
Investments—long-term
   
24.6      
48.5      
73.1      
18.0      
21.9      
39.9  
Total cash and investments
  $
298.5     $
526.2     $
824.7     $
523.4     $
290.0     $
813.4  
Outstanding borrowings—short and long-term
  $
—     $
—     $
—     $
290.7     $
—     $
290.7  
 
At December 31, 2024, our investments consisted of the following:
 
 
 
 
   
Gross
   
 
   
 
 
 
 
Amortized
   
Unrealized
    Allowance for
   
Estimated
 
(In millions)
 
Cost
   
Gains
   
Losses
   
Credit Losses
   
Fair Value
 
Investments—short-term available-for-sale
  $
459.1     $
1.5     $
(0.1 )   $
—     $
460.5  
Investments—long-term available-for-sale
   
73.3      
—      
(0.3 )    
—      
73.0  
Investments—long-term held-to-maturity
   
0.1      
—      
—      
—      
0.1  
Total
  $
532.5     $
1.5     $
(0.4 )   $
—     $
533.6  
Sources and Uses of Cash
We generated $439.1 million and $401.4 million of cash from operating activities during the years ended December 31, 2024 and 2023, 
respectively. In December 2024, we prepaid our previously outstanding long-term debt without penalty in the amount of $289.5 million and, during the 
course of 2024, repurchased approximately $200.0 million of our ordinary shares. We expect that our existing cash, cash equivalents and investments will 
be sufficient to finance our anticipated working capital and other cash requirements, including capital expenditures, for at least the twelve months following 
the date from which our financial statements were issued. Subject to market conditions, interest rates and other factors, we may pursue opportunities to 
obtain financing in the future, including debt and equity offerings, corporate collaborations, bank borrowings, arrangements relating to assets or other 
financing methods or structures.
Our investment objectives are, first, to preserve liquidity and conserve capital and, second, to generate investment income. We mitigate credit risk in 
our cash reserves by maintaining a well-diversified portfolio that limits the amount of investment exposure as to institution, maturity and investment type. 
Our available-for-sale investments consist primarily of short and long-term U.S. government and agency debt securities and corporate debt securities. Our 
held-to-maturity investments consist of investments that are held as collateral under certain letters of credit related to certain of our lease agreements.
We classify available-for-sale investments in an unrealized loss position that do not mature within 12 months as long-term investments. We have the 
intent and ability to hold these investments until recovery, which may be at maturity, and it is more-likely-than-not that we would not be required to sell 
these securities before recovery of their amortized cost. 
We have no off-balance sheet arrangements that are reasonably likely to have a material effect on our financial condition, changes in financial 
condition, revenues or expenses, results of operations, liquidity, capital expenditures, or capital resources in the next 12 months. In connection with our 
acquisition of Rodin, we may become obligated to make up to $825.0 million in future milestone payments to the former shareholders of Rodin, $200.0 
million of which would be triggered upon achievement of certain specified clinical milestones, $300.0 million of which would be triggered by the 
achievement of certain regulatory milestones and $325.0 million of which would be triggered upon the attainment of certain sales thresholds. At December 
31, 2024, we had not recorded a liability related to these milestone payments as none of the future events that would trigger a milestone payment were 
considered probable of occurring. 

 
62
Information about our cash flows, by category, is presented in the accompanying consolidated statements of cash flows. The discussion of our cash 
flows that follows does not include the impact of any adjustments to remove discontinued operations and is stated on a total company consolidated basis. 
The following table summarizes our cash flows for the years ended December 31, 2024 and 2023:
 
 
 
Year Ended December 31,
 
(In millions)
 
2024
   
2023
 
Cash and cash equivalents, beginning of period
  $
457.5     $
292.5  
Cash flows provided by operating activities
   
439.1      
401.4  
Cash flows (used in) provided by investing activities
   
(111.3 )    
53.3  
Cash flows used in financing activities
   
(494.1 )    
(289.7 )
Cash and cash equivalents, end of period
  $
291.2     $
457.5  
Operating Activities
Cash flows provided by operating activities represent the cash receipts and disbursements related to all of our activities other than investing and 
financing activities. Operating cash flow is derived by adjusting our net income (loss) for non-cash operating items such as depreciation, amortization and 
share-based compensation and changes in operating assets and liabilities, which reflect timing differences between the receipt and payment of cash 
associated with transactions and when they are recognized in our results of operations.
Cash flows provided by operating activities during 2024 primarily consisted of net income of $367.1 million, adjusted for non-cash items, including 
share-based compensation of $96.6 million and depreciation and amortization of $28.5 million and deferred income taxes of $40.5 million. 
Cash flows provided by operating activities during 2023 primarily consisted of net income of $355.8 million, adjusted for non-cash items, including 
share-based compensation of $100.9 million and depreciation and amortization of $74.9 million, partially offset by changes in working capital of $36.7 
million and deferred income taxes of $99.9 million. During 2023, net income included receipt of $195.4 million from Janssen, inclusive of $8.1 million in 
late-payment interest, related to 2022 U.S. net sales of the long-acting INVEGA products following the successful outcome of the arbitration proceedings 
in respect of such products.
Investing Activities
Cash flows used in investing activities during 2024 primarily consisted of $176.2 million in net purchases of investments and the purchase of $33.5 
million of property, plant and equipment. These outflows were offset by proceeds from the sale of the Athlone Facility and related business of $97.9 
million. Cash flows provided by investing activities during 2023 primarily consisted of $101.1 million in net sales of investments and offset by the 
purchase of $48.0 million of property, plant and equipment.
We expect to spend approximately $45.0 million to $50.0 million during the year ending December 31, 2025 for capital expenditures. We continue 
to evaluate our manufacturing capacity based on expectations of demand for the products that we manufacture and will continue to record such amounts 
within construction in progress until such time as the underlying assets are placed into service, or we determine we have sufficient existing capacity and the 
assets are no longer required, at which time we would recognize an impairment charge. We continue to periodically evaluate whether facts and 
circumstances indicate that the carrying value of these long-lived assets to be held and used may not be recoverable.
Financing Activities
Cash flows used in financing activities during 2024 primarily related to the prepayment of our previously outstanding long-term debt in the full 
amount of $289.5 million, payment for the repurchase of our ordinary shares and related expenses in the amount of $200.3 million, and $29.6 million of 
employee taxes paid related to net share settlements of equity awards, partially offset by $27.6 million of cash that we received upon exercises of employee 
stock options. Cash flows used in financing activities during 2023 primarily related to $275.0 million in cash distributed to Mural Oncology plc in 
connection with the Separation and $28.5 million of employee taxes paid related to net share settlements of equity awards, partially offset by $16.8 million 
of cash that we received upon exercises of employee stock options.
Debt 
In December 2024, we prepaid in full all Former Term Loans under the Former Credit Agreement for a total of $289.5 million. The Company did 
not incur any early termination penalties in connection with the termination of the Former Credit Agreement (other than customary breakage costs). All 
liens on the collateral securing the obligations under the Former Credit Agreement were released in connection with the termination. Such prepayment was 
accounted for as a debt extinguishment. See Note 12, Long-Term Debt, in the “Notes to Consolidated Financial Statements” in this Annual Report for 
additional discussion related to our Former Term Loans. 

 
63
Discontinued Operations
Net loss from discontinued operations consists of the results of our former oncology business and is reported as a separate component of income. 
For additional information, see Note 3, Discontinued Operations, in the “Notes to Consolidated Financial Statements” in this Annual Report. 
Critical Accounting Estimates
Our consolidated financial statements are prepared in accordance with GAAP. In connection with the preparation of our financial statements, we are 
required to make assumptions and estimates about future events, and apply judgments based on historical experience, current trends and other factors that 
management believes to be relevant at the time our consolidated financial statements are prepared. On a regular basis, we review these accounting policies, 
assumptions, estimates and judgments to ensure that our financial statements are presented fairly and in accordance with GAAP. However, because future 
events and their effects cannot be determined with certainty, actual results could differ from our assumptions and estimates, and such differences could be 
material.
Our significant accounting policies are discussed in Note 2, Summary of Significant Accounting Policies, of the “Notes to Consolidated Financial 
Statements” in this Annual Report. We believe that the following accounting estimates are the most critical to aid in fully understanding and evaluating our 
reported financial results, and they require our most difficult, subjective or complex judgments, resulting from the need to make estimates about the effects 
of matters that are inherently uncertain. We have reviewed these critical accounting estimates and related disclosures with the audit and risk committee of 
our board of directors.
Revenue from Contracts with Customers
We recognize revenue when our customer obtains control of promised goods or services, in an amount that reflects the consideration which we 
expect to receive in exchange for those goods or services. We recognize revenue following the five-step model prescribed under Financial Accounting 
Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 606, Revenue from Contracts with Customers, (“Topic 606”): (i) identify 
contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price 
to the performance obligations in the contract; and (v) recognize revenue when (or as) we satisfy the performance obligations.
Product Sales, Net
Our product sales, net consist of sales in the U.S. of VIVITROL, ARISTADA, ARISTADA INITIO and LYBALVI, primarily to wholesalers, 
specialty distributors and pharmacies. Product sales, net are recognized when the customer obtains control of the product, which is when the product has 
been received by the customer. 
Revenues from product sales are recorded net of reserves established for applicable discounts and allowances that are offered within contracts with 
our customers, healthcare providers or payers. Our process for estimating reserves established for these variable consideration components does not differ 
materially from historical practices. The transaction price, which includes variable consideration reflecting the impact of discounts and allowances, may be 
subject to constraint and is included in the net sales price only to the extent that it is probable that a significant reversal of the amount of the cumulative 
revenues recognized will not occur in a future period. Actual amounts may ultimately differ from our estimates. If actual results vary, we adjust these 
estimates, which could have an effect on earnings in the period of adjustment. The following are our significant categories of sales discounts and 
allowances:
•
Medicaid Rebates—we record accruals for rebates to U.S. states under the Medicaid Drug Rebate Program as a reduction of sales when the 
product is shipped into the distribution channel using the expected value. We rebate individual U.S. states for all eligible units purchased 
under the Medicaid program based on a rebate per unit calculation, which is based on our average manufacturer prices. We estimate expected 
unit sales to individuals covered by Medicaid and rebates per unit under the Medicaid program and adjust our rebate accrual based on actual 
unit sales and rebates per unit and changes in trends in Medicaid utilization. In 2024, actual Medicaid utilization rates related to VIVITROL 
were lower than original estimates, due, in part, to $8.7 million in actual credits received in the fourth quarter of 2024 from certain states 
related to duplicate Medicaid billings. Medicaid rebates for our other products have not differed materially from our estimates; 
•
Chargebacks—discounts that occur when contracted indirect customers purchase directly from wholesalers and specialty distributors. 
Contracted customers generally purchase a product at its contracted price. The wholesaler or specialty distributor, in turn, then generally 
charges back to us the difference between the wholesale acquisition cost and the contracted price paid to the wholesaler or specialty 
distributor by the customer. The allowance for chargebacks is made using the expected value and is based on actual and expected utilization 
of these programs. Chargebacks could exceed historical experience and our estimates of future participation in these programs. To date, 
actual chargebacks have not differed materially from our estimates;

 
64
•
Product Discounts—cash consideration, including sales incentives, given by us under agreements with a number of wholesaler, distributor, 
pharmacy, and treatment provider customers that provide them with a discount on the purchase price of products. The reserve is made using 
the expected value and to date, actual product discounts have not differed materially from our estimates; 
•
Product Returns—we record an estimate for product returns at the time our customers take control of our product. We estimate this liability 
using the expected returns of product sold based on our historical return levels and specifically identified anticipated returns due to known 
business conditions and product expiry dates. Return amounts are recorded as a reduction of sales. Once product is returned, it is destroyed. 
Actual product returns have not differed materially from our estimates; and
•
Medicare Part D—we record accruals for Medicare Part D liabilities under the Medicare Coverage Gap Discount Program (“CGDP”) as a 
reduction of sales. Under the CGDP, patients reaching the annual coverage gap threshold are eligible for reimbursement coverage for out-of-
pocket costs for covered prescription drugs. Under an agreement with the Centers for Medicare and Medicaid Services, manufacturers are 
responsible for reimbursement of prescription plan sponsors for the portion of out-of-pocket expenses not covered under their Medicare 
plans. Actual Medicaid Part D rebates have not differed materially from our estimates.
A rollforward of our provisions for sales and allowances is as follows:
 
(In millions)
 
Contractual 
Adjustments 
   
Discounts 
   
Product Returns
   
Other
   
Total
 
Balance, December 31, 2022
  $
226.7     $
26.2     $
29.7     $
7.9     $
290.5  
Provision:
   
     
     
     
     
 
Current year
   
509.7      
326.9      
33.4      
71.5      
941.5  
Prior year
   
(8.8 )    
—      
2.8      
—      
(6.0 )
Total
   
500.9      
326.9      
36.2      
71.5      
935.5  
Payments and credits related to:
   
     
     
     
     
 
Current year sales
   
(308.4 )    
(293.8 )    
—      
(56.2 )    
(658.4 )
Prior year sales
   
(184.8 )    
(30.6 )    
(24.8 )    
(13.0 )    
(253.2 )
Total
   
(493.2 )    
(324.4 )    
(24.8 )    
(69.2 )    
(911.6 )
Balance, December 31, 2023
  $
234.4     $
28.7     $
41.1     $
10.2     $
314.4  
Provision:
   
     
     
     
     
 
Current year
   
557.7      
386.6      
28.6      
87.4      
1,060.3  
Prior year
   
(20.6 )    
—      
(3.7 )    
—      
(24.3 )
Total
   
537.1      
386.6      
24.9      
87.4      
1,036.0  
Payments and credits related to:
   
     
     
     
     
 
Current year sales
   
(369.9 )    
(353.6 )    
—      
(70.8 )    
(794.3 )
Prior year sales
   
(172.6 )    
(18.1 )    
(15.5 )    
(13.5 )    
(219.7 )
Total
   
(542.5 )    
(371.7 )    
(15.5 )    
(84.3 )    
(1,014.0 )
Balance, December 31, 2024
  $
229.0     $
43.6     $
50.5     $
13.3     $
336.4  
 
(1)
“Contractual Adjustments” include “Medicaid Rebates” and “Medicare Part D” accruals
(2)
“Discounts” include “Chargebacks” and “Product Discounts”
Manufacturing Revenue
We recognize manufacturing revenues from the sale of products we manufacture for resale by our licensees. Substantially all of our manufacturing 
revenues are recognized at a point in time when control of the product passes to the licensee. The sales price for certain of our manufacturing revenues is 
based on the end-market sales price earned by our licensees. As end-market sales generally occur after we have recorded manufacturing revenue, we 
estimate the sales price for such products based on information supplied to us by our licensees, our historical transaction experience and other third-party 
data. Differences between actual manufacturing revenues and estimated manufacturing revenues are reconciled and adjusted for in the period in which they 
become known, which is generally within the same quarter. The differences between our actual and estimated manufacturing revenues have not been 
material to date.
Royalty Revenue
We recognize royalty revenues related to the sale by our licensees of products that incorporate our technology. All of our royalties qualify for the 
sales-and-usage exemption under Topic 606 as (i) such royalties are based strictly on the sales-and-usage by 
(1)
(2)

 
65
the licensee; and (ii) a license of IP is the sole or predominant item to which such royalties relate. Based on this exemption, such royalties are earned in the 
period the products are sold by our licensees and we have a present right to payment.
Certain of our royalty revenues are recognized based on information supplied to us by our licensees and require estimates to be made. Differences 
between actual royalty revenues and estimated royalty revenues are reconciled and adjusted for in the period in which they become known, which is 
generally within the same quarter. The differences between our actual and estimated royalty revenues have not been material to date.
Discontinued operations
We determined that the separation of our former oncology business, which was completed on November 15, 2023, represented a disposal plan that 
met the criteria for classification of the oncology business as a discontinued operation in accordance with ASC 205-20, Discontinued Operations. 
Accordingly, the accompanying consolidated financial statements for all periods have been updated to present the assets and liabilities associated with the 
oncology business separately as discontinued operations on the consolidated balance sheet and the results of such discontinued operations reported as a 
separate component of income in the consolidated statements of operations and comprehensive income (loss).
For additional information related to discontinued operations, see Note 3, Discontinued Operations, in our “Notes to Consolidated Financial 
Statements” in this Annual Report.
Impairment of Long-Lived Assets
Long-lived assets, other than goodwill which is separately tested for impairment, are evaluated for impairment whenever events or changes in 
circumstances indicate the carrying value of an asset may not be recoverable. When evaluating long-lived assets for potential impairment, we first compare 
the carrying value of the asset to the asset’s estimated future cash flows (undiscounted and without interest charges). If the estimated future cash flows are 
less than the carrying value of the asset, we calculate an impairment loss. The impairment loss calculation compares the carrying value of the asset to the 
asset’s estimated fair value, which may be based on estimated future cash flows (discounted and with interest charges). We recognize an impairment loss if 
the amount of the asset’s carrying value exceeds the asset’s estimated fair value. If we recognize an impairment loss, the adjusted carrying amount of the 
asset becomes its new cost basis. For a depreciable long-lived asset, the new cost basis will be depreciated over the remaining useful life of that asset.
When reviewing long-lived assets for impairment, we group long-lived assets with other assets and liabilities at the lowest level for which 
identifiable cash flows are largely independent of the cash flows of other assets and liabilities. Our impairment loss calculations contain uncertainties 
because they require management to make assumptions and to apply judgment to estimate future cash flows and asset fair values, including forecasting 
useful lives of the assets and selecting the discount rate that reflects the risk inherent in future cash flows.
Goodwill
We evaluate goodwill for impairment for our reporting units annually, as of October 31, and whenever events or changes in circumstances indicate 
the carrying value of the reporting units may not be recoverable. A reporting unit is an operating segment, as defined by GAAP, or a component of an 
operating segment. A component of an operating segment is a reporting unit if the component constitutes a business for which discrete financial 
information is available and is reviewed by management. Two or more components of an operating segment may be aggregated and deemed a single 
reporting unit for goodwill impairment testing purposes if the components have similar economic characteristics. As of December 31, 2024, we have one 
operating segment and two reporting units. Our goodwill, which solely relates to the Business Combination, has been assigned to one reporting unit which 
consists of the former EDT business.
We have the option to first assess qualitative factors to determine whether it is necessary to perform a quantitative impairment test. If we elect this 
option and determine, as a result of the qualitative assessment, that it is more likely than not that the fair value of a reporting unit is less than its carrying 
amount, the quantitative impairment test is required; otherwise, no further testing is required. Among other relevant events and circumstances that affect the 
fair value of reporting units, we consider individual factors, such as microeconomic conditions, changes in the industry and the markets in which we 
operate as well as historical and expected future financial performance. Alternatively, we may elect to not first assess qualitative factors and instead 
immediately perform the quantitative impairment test.
On October 31, 2024, we elected to perform a qualitative impairment test and determined that, based on the weight of all available evidence, the fair 
value of the reporting unit more-likely-than-not exceeded its carrying value. 

 
66
Valuation of Deferred Tax Assets
We evaluate the need for deferred tax asset valuation allowances based on a more-likely-than-not standard. The ability to realize deferred tax assets 
depends on the ability to generate sufficient taxable income within the carryback or carryforward periods provided for in the tax law for each applicable tax 
jurisdiction. We consider the following possible sources of taxable income when assessing the realization of deferred tax assets:
•
future reversals of existing taxable temporary differences;
•
future taxable income exclusive of reversing temporary differences and carryforwards;
•
taxable income in prior carryback years; and
•
tax-planning strategies.
The assessment regarding whether a valuation allowance is required or should be adjusted also considers all available positive and negative evidence 
factors including, but not limited to:
•
nature, frequency and severity of recent losses;
•
duration of statutory carryforward periods;
•
historical experience with tax attributes expiring unused; and
•
near- and medium-term financial outlook.
We utilize a rolling three years of actual and current year anticipated results as the primary measures of cumulative income (losses) in recent years. 
For additional information related to our assessment of our valuation allowance, see Note 17, Income Taxes in the “Notes to Consolidated Financial 
Statements” in this Annual Report. 
The evaluation of deferred tax assets requires judgment in assessing the likely future tax consequences of events that have been recognized in our 
financial statements or tax returns and future profitability. Our accounting for deferred tax consequences represents our best estimate of those future events. 
Changes in our current estimates, due to unanticipated events or otherwise, could have a material effect on our financial condition and results of operations. 
For information related to risks surrounding our deferred tax assets, see “Item 1A—Risk Factors” in this Annual Report and specifically the section entitled 
“Our deferred tax assets may not be realized.”
Recent Accounting Pronouncements
See Note 2, Summary of Significant Accounting Policies, “New Accounting Pronouncements” in our “Notes to Consolidated Financial Statements” 
in this Annual Report for discussion, if any, of new accounting standards.
Item 7A. Quantitative and Qualitative Disclosures about Market Risk
We hold securities in our investment portfolio that are sensitive to market risks. Our securities with fixed interest rates may have their market value 
adversely impacted by a rise in interest rates, while floating rate securities may produce less income than expected if interest rates fall. Due in part to these 
factors, our future investment income may fall short of expectations due to a fall in interest rates or we may suffer losses in principal if we are forced to sell 
securities that decline in market value due to changes in interest rates. However, because we classify our investments in debt securities as available-for-
sale, no gains or losses are recognized due to changes in interest rates unless such securities are sold prior to maturity or declines in fair value are 
determined to be other-than-temporary. Should interest rates fluctuate by 10%, our interest income would change by an immaterial amount over an annual 
period. We do not believe that we have a material exposure to interest rate risk as our investment policies specify credit quality standards for our 
investments and limit the amount of credit exposure from any single issue, issuer or type of investment.
We do not believe our exposure to liquidity and credit risk to be significant as approximately 41% and 59% of our investments at December 31, 
2024 are in corporate debt securities with a minimum rating of A2 (Moody’s)/A (Standard and Poor’s) and debt securities issued by the U.S. government or 
its agencies, respectively. We have the intent and ability to hold these securities until recovery, which may be at maturity. 

 
67
Currency Exchange Rate Risk
Manufacturing and royalty revenues that we receive on certain of our products and services are a percentage of the net sales made by our licensees, 
and a portion of these sales are made in countries outside the U.S. and are denominated in currencies in which the product is sold, which is predominantly 
the euro. The manufacturing and royalty payments on these non-U.S. sales are calculated initially in the currency in which the sale is made and are then 
converted into USD to determine the amount that our licensees pay us for manufacturing and royalty revenues. Fluctuations in the exchange ratio of the 
USD and these non-U.S. currencies will have the effect of increasing or decreasing our revenues even if there is a constant amount of sales in non-U.S. 
currencies. For example, if the USD weakens against a non-U.S. currency, then our revenues will increase given a constant amount of sales in such non-
U.S. currency. For the year ended December 31, 2024, an average 10% strengthening of the USD relative to the currencies in which these products are sold 
would have resulted in revenues being reduced by approximately $8.9 million, as compared to a reduction in revenues of approximately $10.3 million for 
the year ended December 31, 2023. 
We incur significant operating costs in Ireland and face exposure to changes in the exchange ratio of the USD and the euro arising from expenses 
and payables at our Irish operations that are settled in euro. The impact of changes in the exchange ratio of the USD and the euro on our USD-denominated 
revenues earned in countries other than the U.S. is partially offset by the opposite impact of changes in the exchange ratio of the USD and the euro on 
operating expenses and payables incurred at our Irish operations that are settled in euro. For the year ended December 31, 2024, an average 10% weakening 
in the USD relative to the euro would have resulted in an increase to our expenses denominated in euro of approximately $3.9 million, as compared to an 
increase in our expenses of approximately $7.7 million for the year ended December 31, 2023.
Item 8. Financial Statements and Supplementary Data
 
Selected Quarterly Financial Data (unaudited)
 
 
 
First 

Quarter
   
Second 

Quarter
   
Third 

Quarter
   
Fourth 

Quarter
   
Total

2024
 
 
 
(In thousands, except per share data)
 
Year Ended December 31, 2024
 
 
   
 
   
 
   
 
   
 
 
Total revenues
  $
350,372     $
399,131     $
378,143     $
429,986     $
1,557,632  
Total operating expenses
   
307,063      
289,248      
273,387      
267,298      
1,136,996  
Operating income from continuing operations
   
43,309      
109,883      
104,756      
162,688      
420,636  
 
   
     
     
     
     
 
Net income from continuing operations
  $
38,948     $
94,658     $
92,795     $
145,737     $
372,138  
Net (loss) income from discontinued operations
   
(2,120 )    
(3,300 )    
(414 )    
766      
(5,068 )
Net income
  $
36,828     $
91,358     $
92,381     $
146,503     $
367,070  
 
   
     
     
     
     
 
Earnings (loss) per share—basic:
   
     
     
     
     
 
From continuing operations
  $
0.23     $
0.56     $
0.57     $
0.90     $
2.24  
From discontinued operations
  $
(0.01 )   $
(0.02 )   $
(0.00 )   $
0.00     $
(0.03 )
From net income
  $
0.22     $
0.54     $
0.57     $
0.90     $
2.21  
 
   
     
     
     
     
 
Earnings (loss) per share—diluted:
   
     
     
     
     
 
From continuing operations
  $
0.23     $
0.55     $
0.56     $
0.88     $
2.19  
From discontinued operations
  $
(0.01 )   $
(0.02 )   $
(0.00 )   $
0.00     $
(0.03 )
From net income
  $
0.21     $
0.53     $
0.55     $
0.88     $
2.16  
 

 
68
 
 
First 

Quarter
   
Second 

Quarter
   
Third 

Quarter
   
Fourth 

Quarter
   
Total

2023
 
 
 
(In thousands, except per share data)
 
Year Ended December 31, 2023
 
 
   
 
   
 
   
 
   
 
 
Total revenues from continuing operations
  $
287,595     $
617,397     $
380,938     $
377,475     $
1,663,405  
Total operating expenses from continuing operations
   
298,567      
336,128      
291,744      
322,844      
1,249,283  
Operating (loss) income from continuing operations
   
(10,972 )    
281,269      
89,194      
54,631      
414,122  
 
   
     
     
     
     
 
Net (loss) income from continuing operations
  $
(12,050 )   $
279,101     $
91,554     $
160,552     $
519,157  
Net loss from discontinued operations
   
(29,795 )    
(42,036 )    
(43,796 )    
(47,773 )    
(163,400 )
Net (loss) income
  $
(41,845 )   $
237,065     $
47,758     $
112,779     $
355,757  
 
   
     
     
     
     
 
(Loss) earnings per share—basic:
   
     
     
     
     
 
From continuing operations
  $
(0.07 )   $
1.68     $
0.55     $
0.96     $
3.12  
From discontinued operations
  $
(0.18 )   $
(0.25 )   $
(0.26 )   $
(0.29 )   $
(0.98 )
From net (loss) income
  $
(0.25 )   $
1.43     $
0.29     $
0.68     $
2.14  
 
   
     
     
     
     
 
(Loss) earnings per share—diluted:
   
     
     
     
     
 
From continuing operations
  $
(0.07 )   $
1.63     $
0.53     $
0.94     $
3.06  
From discontinued operations
  $
(0.18 )   $
(0.25 )   $
(0.25 )   $
(0.28 )   $
(0.96 )
From net (loss) income
  $
(0.25 )   $
1.38     $
0.28     $
0.66     $
2.10  
 
Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
Not applicable.
Item 9A. Controls and Procedures
Disclosure Controls and Procedures and Internal Control Over Financial Reporting
Controls and Procedures
Our management has evaluated, with the participation of our principal executive officer and principal financial officer, the effectiveness of our 
disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act), as of December 31, 2024. Based upon that 
evaluation, our principal executive officer and principal financial officer concluded that, as of the end of the period covered by this report, our disclosure 
controls and procedures were effective to provide reasonable assurance that (a) the information required to be disclosed by us in the reports that we file or 
submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and (b) 
such information 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. In designing and evaluating our disclosure controls and procedures, our management 
recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired 
control objectives, and our management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and 
procedures.
Changes in Internal Control over Financial Reporting
There were no changes in our internal control over financial reporting during the quarter ended December 31, 2024 that have materially affected, or 
are reasonably likely to materially affect, our internal control over financial reporting.
Management’s Annual Report on Internal Control over Financial Reporting
Our management is responsible for establishing and maintaining adequate internal control over our financial reporting as defined in Rules 13a-15(f) 
and 15d-15(f). Internal control over financial reporting is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act as a process designed by, or 
under the supervision of, the issuer’s principal executive and principal financial officers, or persons performing similar functions, and effected by the 
issuer’s board of directors, management and other personnel to provide reasonable assurance regarding the reliability of financial reporting and the 
preparation of financial statements for external purposes in accordance with GAAP and includes those policies and procedures that:
•
pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect our transactions and dispositions of the assets of the issuer;

 
69
•
provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with GAAP, and 
that receipts and expenditures of the issuer are being made only in accordance with authorizations of management and directors of the issuer; and
•
provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the issuer’s assets that could 
have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation 
of effectiveness for future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of 
compliance with the policies or procedures may deteriorate.
Our management assessed the effectiveness of our internal control over financial reporting as of December 31, 2024. In making this assessment, 
management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”) in its 2013 Internal Control
—Integrated Framework.
Based on this assessment, our management has concluded that, as of December 31, 2024, our internal control over financial reporting was effective.
The effectiveness of our internal control over financial reporting as of December 31, 2024 has been audited by PricewaterhouseCoopers LLP, an 
independent registered public accounting firm, as stated in their report, which is included in this Annual Report, beginning on page F-1.
Item 9B. Other Information
Trading Plans 
During the three months ended December 31, 2024, no officer (as defined in Rule 16a-1(f) under the Exchange Act) or director of the Company 
adopted, modified or terminated a contract, instruction or written plan for the purchase or sale of securities of the Company that were intended to satisfy the 
affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act or a trading plan not intended to satisfy the affirmative defense conditions of 
Rule 10b5-1(c) under the Exchange Act.
Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections
Not applicable.

 
70
PART III
Item 10. Directors, Executive Officers and Corporate Governance
The information required by this item is incorporated herein by reference to our definitive proxy statement for our 2025 annual general meeting of 
shareholders. We expect this information will be provided under sections of the proxy statement entitled “Proposal 1—Election of Directors,” “The Role of 
the Board and Its Committees,” “Executive Officers,” “Other Corporate Governance Matters” and “Board Nominations, Evaluations and Refreshment” 
and, if required, “Delinquent Section 16(a) Reports”.
Item 11. Executive Compensation
The information required by this item (excluding, for clarity, the information required by Item 402(v) of Regulation S-K) is incorporated herein by 
reference to our definitive proxy statement for our 2025 annual general meeting of shareholders. We expect this information will be provided under 
sections of the proxy statement entitled “The Role of the Board and Its Committees,” “Director Compensation,” “Executive Compensation—Compensation 
Discussion and Analysis,” “Executive Compensation Tables,” “Additional Compensation Information,” “Compensation Committee Report” and “Pay 
Ratio”.
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
The information required by this item is incorporated herein by reference to our definitive proxy statement for our 2025 annual general meeting of 
shareholders. We expect this information will be provided under sections of the proxy statement entitled “Ownership of the Company’s Ordinary Shares” 
and “Equity Compensation Plan Information”.
Item 13. Certain Relationships and Related Transactions, and Director Independence
The information required by this item is incorporated herein by reference to our definitive proxy statement for our 2025 annual general meeting of 
shareholders. We expect this information will be provided under sections of the proxy statement entitled “Certain Relationships and Related Party 
Transactions” and “The Board of Directors”.
Item 14. Principal Accounting Fees and Services
The information required by this item is incorporated herein by reference to our definitive proxy statement for our 2025 annual general meeting of 
shareholders. We expect this information will be provided under a section of the proxy statement entitled “Audit Fees”.

 
71
PART IV
Item 15. Exhibits and Financial Statement Schedules
(a)(1)	
Consolidated Financial Statements—The consolidated financial statements of Alkermes plc, as required by this item, are submitted in a 
separate section beginning on page F-1 of this Annual Report, as follows:
 
Financial Statement
 
Page Number
Report of Independent Registered Public Accounting Firm (PCAOB ID: 238)
 
F-1
Consolidated Balance Sheets
 
F-3
Consolidated Statements of Operations and Comprehensive Income (Loss)
 
F-4
Consolidated Statements of Shareholders’ Equity
 
F-5
Consolidated Statements of Cash Flows
 
F-6
Notes to the Consolidated Financial Statements
 
F-7
(2)	 Financial Statement Schedules—All schedules have been omitted because the absence of conditions under which they are required or because 
the required information is included in the consolidated financial statements or notes thereto.
(3)	 The exhibits listed in the below Exhibit Index are filed or furnished as part of this Annual Report or are incorporated into this Annual Report 
by reference. 
EXHIBIT INDEX
 
 
 
 
 
 
 
 
 
 
Incorporated by reference herein
Exhibit No.
 
Description of Exhibit
 
Form
 
Date
2.2 ** §
 
Agreement and Plan of Merger, dated November 14, 2019 by and among 
Alkermes, Inc., Thinker Merger Sub, Inc., Alkermes plc, Rodin 
Therapeutics, Inc., and Shareholder Representative Services LLC, as 
Company Equityholder Representative.
 
Exhibit 2.1 to the Alkermes plc 
Current Report on Form 8-K (File 
No. 001-35299)
 
November 25, 2019
2.3 §
 
Separation Agreement, dated as of November 13, 2023, by and between 
Alkermes plc and Mural Oncology plc.
 
Exhibit 2.1 to the Alkermes plc 
Current Report on Form 8-K (File 
No. 001-35299)
 
November 15, 2023
3.1
 
Memorandum and Articles of Association of Alkermes plc.
 
Exhibit 3.1 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
May 1, 2024
4.1 #
 
Description of Securities.
 
 
 
 
10.1
 
Lease between Alkermes, Inc. and PDM Unit 850, LLC, dated as of April 
22, 2009.
 
Exhibit 10.5 to the Alkermes, Inc. 
Annual Report on Form 10-K 
(File No. 001-14131)
 
May 28, 2009
10.1A
 
First Amendment to Lease between Alkermes, Inc. and PDM Unit 850, 
LLC, dated as of June 18, 2009.
 
Exhibit 10.2 to the Alkermes, Inc. 
Quarterly Report on Form 10-Q 
(File No. 001-14131)
 
August 6, 2009
10.1B
 
Second Amendment to Lease between Alkermes, Inc. and PDM Unit 850, 
LLC, dated as of November 12, 2013.
 
Exhibit 10.74 to the Alkermes plc 
Transition Report on Form 10-KT 
(File No. 001-35299)
 
February 27, 2014
10.1C
 
Third Amendment to Lease between Alkermes, Inc. and PDM 850 Unit, 
LLC, dated as of May 15, 2014.
 
Exhibit 10.2 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
July 31, 2014
10.1D
 
Fourth Amendment to Lease between Alkermes, Inc. and GI TC 850 
Winter Street, LLC, dated as of December 30, 2014.
 
Exhibit 10.7 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
July 30, 2015
10.1E
 
Fifth Amendment to Lease between Alkermes, Inc. and GI TC 850 Winter 
Street, LLC, dated as of October 31, 2018.
 
Exhibit 10.1.5 to the Alkermes plc 
Annual Report on Form 10-K 
(File No. 001-35299)
 
February 15, 2019
10.1F
 
Sixth Amendment to Lease between Alkermes, Inc. and GI TC 850 
Winter Street, LLC, dated as of July 24, 2020.
 
Exhibit 10.1 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
October 29, 2020

 
72
 
 
 
 
 
 
 
 
 
Incorporated by reference herein
Exhibit No.
 
Description of Exhibit
 
Form
 
Date
10.2 
 
License Agreement, dated as of February 13, 1996, between Medisorb 
Technologies International L.P. and Janssen Pharmaceutica Inc. (United 
States) (assigned to Alkermes, Inc. in July 2006).
 
Exhibit 10.2 to the Alkermes plc 
Annual Report on Form 10-K 
(File No. 001-35299)
 
 
February 25, 2016
10.2A *
 
Third Amendment to Development Agreement, Second Amendment to 
Manufacturing and Supply Agreement and First Amendment to License 
Agreements by and between Janssen Pharmaceutica International, Janssen 
Pharmaceutica Inc. and Alkermes Controlled Therapeutics Inc. II, dated 
April 1, 2000 (assigned to Alkermes, Inc. in July 2006).
 
Exhibit 10.5 to the Alkermes, Inc. 
Quarterly Report on Form 10-Q 
(File No. 001-14131)
 
February 8, 2005
10.2B *
 
Second Amendment, dated as of August 16, 2012, to the License 
Agreement, dated as of February 13, 1996, as amended, by and between 
Alkermes, Inc. and Janssen Pharmaceutica Inc. and the License 
Agreement, dated as of February 21, 1996, as amended, by and between 
Alkermes, Inc. and JPI Pharmaceutica International, and the Fifth 
Amendment, dated as of August 16, 2012, to the Manufacturing and 
Supply Agreement, dated as of August 6, 1997, as amended, by and 
between Alkermes, Inc., Janssen Pharmaceutica Inc. and JPI 
Pharmaceutica International.
 
Exhibit 10.3 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
November 1, 2012
10.3 
 
License Agreement, dated as of February 21, 1996, between Medisorb 
Technologies International L.P. and Janssen Pharmaceutica International 
(worldwide except United States) (assigned to Alkermes, Inc. in July 
2006).
 
Exhibit 10.3 to the Alkermes plc 
Annual Report on Form 10-K 
(File No. 001-35299)
 
February 25, 2016
10.4 
 
Manufacturing and Supply Agreement, dated August 6, 1997, by and 
among JPI Pharmaceutica International, Janssen Pharmaceutica, Inc. and 
Alkermes Controlled Therapeutics Inc. II (assigned to Alkermes, Inc. in 
July 2006).
 
Exhibit 10.4 to the Alkermes plc 
Annual Report on Form 10-K 
(File No. 001-35299)
 
February 25, 2016
10.4A *
 
Fourth Amendment to Development Agreement and First Amendment to 
Manufacturing and Supply Agreement by and between Janssen 
Pharmaceutica International, Janssen Pharmaceutica Products, L.P. and 
Alkermes Controlled Therapeutics Inc. II, dated December 20, 2000 
(assigned to Alkermes, Inc. in July 2006).
 
Exhibit 10.4 to the Alkermes, Inc. 
Quarterly Report on Form 10-Q 
(File No. 001-14131)
 
February 8, 2005
10.4B 
 
Addendum to the Manufacturing and Supply Agreement by and among 
JPI Pharmaceutica International, Janssen Pharmaceutica Inc. and 
Alkermes Controlled Therapeutics Inc. II, dated August 1, 2001.
 
Exhibit 10.4.2 to the Alkermes plc 
Annual Report on Form 10-K 
(File No. 001-35299)
 
February 25, 2016
10.4C  
 
Letter Agreement and Exhibits to Manufacturing and Supply Agreement, 
dated February 1, 2002, by and among JPI Pharmaceutica International, 
Janssen Pharmaceutica Inc. and Alkermes Controlled Therapeutics Inc. II 
(assigned to Alkermes, Inc. in July 2006).
 
Exhibit 10.4.3 to the Alkermes plc 
Annual Report on Form 10-K 
(File No. 001-35299)
 
February 25, 2016
10.4D *
 
Amendment to Manufacturing and Supply Agreement by and between JPI 
Pharmaceutica International, Janssen Pharmaceutica Inc. and Alkermes 
Controlled Therapeutics Inc. II, dated December 22, 2003 (assigned to 
Alkermes, Inc. in July 2006).
 
Exhibit 10.6 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 011-35299)
 
July 30, 2015
10.4E *
 
Fourth Amendment to Manufacturing and Supply Agreement by and 
between JPI Pharmaceutica International, Janssen Pharmaceutica Inc. and 
Alkermes Controlled Therapeutics Inc. II, dated January 10, 2005 
(assigned to Alkermes, Inc. in July 2006).
 
Exhibit 10.9 to the Alkermes, Inc. 
Quarterly Report on Form 10-Q 
(File No. 001-14131)
 
February 8, 2005
10.4F *
 
Sixth Amendment to Manufacturing and Supply Agreement by and 
between JPI Pharmaceutica International, Janssen Pharmaceutica Inc. and 
Alkermes Controlled Therapeutics Inc. II (assigned to Alkermes, Inc. in 
July 2006), effective as of July 1, 2018.
 
Exhibit 10.11 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 011-35299)
 
October 23, 2018

 
73
 
 
 
 
 
 
 
 
 
Incorporated by reference herein
Exhibit No.
 
Description of Exhibit
 
Form
 
Date
10.5 *
 
Agreement by and between JPI Pharmaceutica International, Janssen 
Pharmaceutica Inc. and Alkermes Controlled Therapeutics Inc. II, dated 
December 21, 2002 (assigned to Alkermes, Inc. in July 2006).
 
Exhibit 10.6 to the Alkermes, Inc. 
Quarterly Report on Form 10-Q 
(File No. 001-14131)
 
February 8, 2005
10.5A *
 
Amendment to Agreement by and between JPI Pharmaceutica 
International, Janssen Pharmaceutica Inc. and Alkermes Controlled 
Therapeutics Inc. II, dated December 16, 2003 (assigned to Alkermes, Inc. 
in July 2006).
 
Exhibit 10.7 to the Alkermes, Inc. 
Quarterly Report on Form 10-Q 
(File No. 001-14131)
 
February 8, 2005
10.6 **
 
License Agreement by and among Elan Pharmaceutical Research Corp., 
d/b/a Nanosystems and Elan Pharma International Limited and Janssen 
Pharmaceutica N.V. dated as of March 31, 1999.
 
Exhibit 10.1 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
April 26, 2023
10.6A
 
First Amendment, dated as of July 31, 2003, to the License Agreement by 
and among Elan Drug Delivery, Inc. (formerly Elan Pharmaceutical 
Research Corp.) and Elan Pharma International Limited and Janssen 
Pharmaceutica NV dated March 31, 1999.
 
Exhibit 10.24 to the Alkermes plc 
Annual Report on Form 10-K 
(File No. 001-35299)
 
May 23, 2013
10.6B **
 
Agreement Amendment No. 2, dated as of July 31, 2009, to the License 
Agreement by and among Elan Pharmaceutical Research Corp., d/b/a 
Nanosystems and Elan Pharma International Limited and Janssen 
Pharmaceutica N.V. dated as of March 31, 1999, as amended by the First 
Amendment, dated as of July 31, 2003.
 
Exhibit 10.2 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
April 26, 2023
10.7 *
 
License and Collaboration Agreement, dated November 27, 2017, by and 
between Alkermes Pharma Ireland Limited and Biogen International 
GmbH (as successor to Biogen Swiss Manufacturing GmbH).
 
Exhibit 10.10 to the Alkermes plc 
Annual Report on Form 10-K 
(File No. 011-35299)
 
February 16, 2018
10.7A *
 
First Amendment to License and Collaboration Agreement between 
Alkermes Pharma Ireland Limited and Biogen International GmbH (as 
successor to Biogen Swiss Manufacturing GmbH), effective as of October 
3, 2018.
 
Exhibit 10.12 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 011-35299)
 
October 23, 2018
10.7B 
 
Second Amendment to License and Collaboration Agreement between 
Alkermes Pharma Ireland Limited and Biogen International GmbH (as 
successor to Biogen Swiss Manufacturing GmbH), effective as of January 
31, 2019.
 
Exhibit 10.1 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 011-35299)
 
April 25, 2019
10.7C **
 
Third Amendment to License and Collaboration Agreement between 
Alkermes Pharma Ireland Limited and Biogen International GmbH (as 
successor to Biogen Swiss Manufacturing GmbH), effective as of October 
30, 2019.
 
Exhibit 10.10.3 to the Alkermes 
plc Annual Report on Form 10-K 
(File No. 011-35299)
 
February 13, 2020
10.7D **
 
Fourth Amendment to License and Collaboration Agreement between 
Alkermes Pharma Ireland Limited and Biogen International GmbH (as 
successor to Biogen Swiss Manufacturing GmbH), effective as of August 
25, 2022.
 
Exhibit 10.1 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 011-35299)
 
November 2, 2022
10.7E **
 
Fifth Amendment to License and Collaboration Agreement between 
Alkermes Pharma Ireland Limited and Biogen International GmbH (as 
successor to Biogen Swiss Manufacturing GmbH), effective as of June 7, 
2024.
 
Exhibit 10.1 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 011-35299)
 
July 24, 2024
10.8
 
Lease, dated March 23, 2018, by and between Alkermes, Inc. and PDM 
900 Unit, LLC.
 
Exhibit 10.4 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 011-35299)
 
April 26, 2018
10.8A
 
First Amendment to Lease, dated June 21, 2018, by and between 
Alkermes, Inc. and PDM 900 Unit, LLC.
 
Exhibit 10.2 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
July 26, 2018
10.8B
 
Second Amendment to Lease, dated May 10, 2019, by and between 
Alkermes, Inc. and PDM 900 Unit, LLC.
 
Exhibit 10.2 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
July 25, 2019

 
74
 
 
 
 
 
 
 
 
 
Incorporated by reference herein
Exhibit No.
 
Description of Exhibit
 
Form
 
Date
10.9 **
 
Confidential Settlement and License Agreement, dated August 29, 2023, 
by and among Alkermes, Inc., Alkermes Pharma Ireland Limited and 
Teva Pharmaceuticals USA, Inc. 
 
Exhibit 10.1 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
October 25, 2023
10.10 §
 
Tax Matters Agreement, dated November 13, 2023, by and between 
Alkermes plc and Mural Oncology plc. 
 
Exhibit 10.1 to the Alkermes plc 
Current Report on Form 8-K (File 
No. 001-35299)
 
November 15, 2023
10.11 ** §
 
Asset Purchase Agreement, dated December 13, 2023, by and between 
Alkermes Pharma Ireland Limited, Novo Nordisk Production Ireland 
Limited and Novo Nordisk A/S.
 
Exhibit 10.16 to the Alkermes plc 
Annual Report on Form 10-K 
(File No. 001-35299)
 
February 21, 2024
10.12 † 
 
Employment Agreement, dated as of December 12, 2007, by and between 
Richard F. Pops and Alkermes, Inc.
 
Exhibit 10.1 to the Alkermes, Inc. 
Quarterly Report on Form 10-Q 
(File No. 001-14131)
 
February 11, 2008
10.12A †
 
Amendment to Employment Agreement, dated as of October 7, 2008, by 
and between Alkermes, Inc. and Richard F. Pops.
 
Exhibit 10.5 to the Alkermes, Inc. 
Current Report on Form 8-K (File 
No. 001-14131)
 
October 7, 2008
10.12B †
 
Amendment No. 2 to Employment Agreement, dated as of September 10, 
2009 by and between Richard F. Pops and Alkermes, Inc.
 
Exhibit 10.2 to the Alkermes, Inc. 
Current Report on Form 8-K (File 
No. 001-14131)
 
September 11, 2009
10.13 †
 
Form of Employment Agreement, as amended by the Form of 
Amendment to Employment Agreement set forth in 10.12.1, entered into 
by and between Alkermes, Inc. and Blair C. Jackson.
 
Exhibit 10.3 to the Alkermes, Inc. 
Quarterly Report on Form 10-Q 
(File No. 001-14131)
 
February 11, 2008
10.13A †
 
Form of Amendment to Employment Agreement with Alkermes, Inc. 
 
Exhibit 10.7 to the Alkermes, Inc. 
Current Report on Form 8-K (File 
No. 001-14131)
 
October 7, 2008
10.14 †
 
Form of Employment Agreement entered into by and between Alkermes, 
Inc. and each of Iain M. Brown, David J. Gaffin, Craig C. Hopkinson, 
M.D. and Christian Todd Nichols.
 
Exhibit 10.1 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 011-35299)
 
November 2, 2016
10.14A†
 
Offer Letter by and between Alkermes, Inc. and Craig C. Hopkinson 
M.D., effective as of April 24, 2017.
 
Exhibit 10.17.1 to the Alkermes 
plc Annual Report on Form 10-K 
(File No. 011-35299)
 
February 16, 2018
10.14B †
 
Offer Letter, dated March 29, 2019, by and between Alkermes, Inc. and 
Christian Todd Nichols.
 
Exhibit 10.1 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 011-35299)
 
July 29, 2020
10.15 †
 
Form of Indemnification Agreement entered into by and between 
Alkermes, Inc. and each of the Directors and Secretaries of Alkermes plc 
and its Irish subsidiaries.
 
Exhibit 10.2 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
April 29, 2020
10.16 †
 
Form of Deed of Indemnification entered into by and between each of the 
Directors, Secretaries and executive officers of Alkermes plc and its 
subsidiaries.
 
Exhibit 10.1 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
April 29, 2020
10.17†
 
Alkermes plc Amended and Restated 2008 Stock Option and Incentive 
Plan, as amended.
 
Exhibit 10.1 to the Alkermes plc 
Quarterly Report on Form 10-Q 
for the quarter ended March 31, 
2017 (File No. 001-35299)
 
April 27, 2017
10.17A †
 
Form of Stock Option Award Certificate (Non-Employee Director) under 
the Alkermes plc Amended and Restated 2008 Stock Option and Incentive 
Plan, as amended.
 
Exhibit 10.4 to the Alkermes plc 
Quarterly Report on Form 10-Q 
for the quarter ended March 31, 
2016 (File No. 001-35299)
 
April 28, 2016
10.17B †
 
Form of Restricted Stock Unit Award Certificate (Time Vesting Only – 
Irish) under the Alkermes plc Amended and Restated 2008 Stock Option 
and Incentive Plan, as amended.
 
Exhibit 10.5 to the Alkermes plc 
Quarterly Report on Form 10-Q 
for the quarter ended 
 
April 28, 2016

 
75
 
 
 
 
 
 
 
 
 
Incorporated by reference herein
Exhibit No.
 
Description of Exhibit
 
Form
 
Date
 
 
 
 
March 31, 2016 (File No. 001-
35299)
 
 
10.17C †
 
Form of Restricted Stock Unit Award Certificate (Time Vesting Only – 
U.S.) under the Alkermes plc Amended and Restated 2008 Stock Option 
and Incentive Plan, as amended.
 
Exhibit 10.6 to the Alkermes plc 
Quarterly Report on Form 10-Q 
for the quarter ended March 31, 
2016 (File No. 001-35299)
 
April 28, 2016
10.17D †
 
Form of Stock Option Award Certificate (Time Vesting Non-Qualified 
Option – Irish) under the Alkermes plc Amended and Restated 2008 Stock 
Option and Incentive Plan, as amended.
 
Exhibit 10.7 to the Alkermes plc 
Quarterly Report on Form 10-Q 
for the quarter ended March 31, 
2016 (File No. 001-35299)
 
April 28, 2016
10.17E †
 
Form Stock Option Award Certificate (Time Vesting Non-Qualified 
Option – U.S.) under the Alkermes plc Amended and Restated 2008 Stock 
Option and Incentive Plan, as amended.
 
Exhibit 10.8 to the Alkermes plc 
Quarterly Report on Form 10-Q 
for the quarter ended March 31, 
2016 (File No. 001-35299)
 
April 28, 2016
10.17F †
 
Form of Stock Option Award Certificate (Incentive Stock Option – U.S.) 
under the Alkermes plc Amended and Restated 2008 Stock Option and 
Incentive Plan, as amended.
 
Exhibit 10.9 to the Alkermes plc 
Quarterly Report on Form 10-Q 
for the quarter ended March 31, 
2016 (File No. 001-35299)
 
April 28, 2016
10.17G †
 
Form of 2008 Restricted Stock Unit Award Certificate (Performance 
Vesting Only) under the Alkermes plc Amended and Restated 2008 Stock 
Option and Incentive Plan, as amended.
 
Exhibit 10.2 to the Alkermes, Inc. 
Current Report on Form 8-K (File 
No. 001-14131)
 
May 22, 2009
10.18†
 
Alkermes plc 2011 Stock Option and Incentive Plan, as amended.
 
Exhibit 10.1 to the Alkermes plc 
Current Report on Form 8-K (File 
No. 011-35299)
 
May 24, 2017
10.18A †
 
Form of Incentive Stock Option Award Certificate under the Alkermes plc 
2011 Stock Option and Incentive Plan, as amended.
 
Exhibit 10.1 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
October 23, 2018
10.18B †
 
Form of Non-Qualified Stock Option (Employee) Award Certificate under 
the Alkermes plc 2011 Stock Option and Incentive Plan, as amended.
 
Exhibit 10.2 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
October 23, 2018
10.18C †
 
Form of Restricted Stock Unit (Time-Vesting) Award Certificate under 
the Alkermes plc 2011 Stock Option and Incentive Plan, as amended.
 
Exhibit 10.3 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
October 23, 2018
10.18D †
 
Form of Restricted Stock Unit (Performance-Vesting) Award Certificate 
under the Alkermes plc 2011 Stock Option and Incentive Plan, as 
amended.
 
Exhibit 10.4 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
October 23, 2018
10.18E †
 
Form of Non-Qualified Stock Option (Non-Employee Director) Award 
Certificate under the Alkermes plc 2011 Stock Option and Incentive Plan, 
as amended.
 
Exhibit 10.5 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
October 23, 2018
10.19 †
 
Alkermes plc 2018 Stock Option and Incentive Plan, as amended.
 
Exhibit 10.1 to the Alkermes plc 
Current Report on Form 8-K (File 
No. 001-35299)
 
May 31, 2024
10.19A †
 
Form of Incentive Stock Option Award Certificate under the Alkermes plc 
2018 Stock Option and Incentive Plan, as amended.
 
Exhibit 10.6 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
October 23, 2018
10.19B †
 
Form of Non-Qualified Stock Option (Employee) Award Certificate under 
the Alkermes plc 2018 Stock Option and Incentive Plan, as amended.
 
Exhibit 10.7 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
October 23, 2018
10.19C †
 
Form of Restricted Stock Unit (Time-Vesting) Award Certificate under 
the Alkermes plc 2018 Stock Option and Incentive Plan, as amended.
 
Exhibit 10.8 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
October 23, 2018

 
76
 
 
 
 
 
 
 
 
 
Incorporated by reference herein
Exhibit No.
 
Description of Exhibit
 
Form
 
Date
10.19D †
 
Form of Restricted Stock Unit (Performance-Vesting) Award Certificate 
under the Alkermes plc 2018 Stock Option and Incentive Plan, as 
amended.
 
Exhibit 10.6 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
July 29, 2020
10.19E †
 
Form of Non-Qualified Stock Option (Non-Employee Director) Award 
Certificate under the Alkermes plc 2018 Stock Option and Incentive Plan, 
as amended.
 
Exhibit 10.4 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
July 29, 2020
10.19F †
 
Form of Non-Employee Director Restricted Stock Unit (Time-Vesting) 
Award Certificate under the Alkermes plc 2018 Stock Option and 
Incentive Plan, as amended.
 
Exhibit 10.5 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
July 29, 2020
10.19G †
 
Form of Non-Employee Director New Director Grant Non-Qualified 
Stock Option Award Certificate under the Alkermes plc 2018 Stock 
Option and Incentive Plan, as amended.
 
Exhibit 10.1.1 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
July 27, 2022
10.19H †
 
Form of Non-Employee Director New Director Grant Restricted Stock 
Unit (Time-Vesting) Award Certificate under the Alkermes plc 2018 
Stock Option and Incentive Plan, as amended.
 
Exhibit 10.1.2 to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
July 27, 2022
10.19I †
 
Form of Incentive Stock Option Award Certificate for Reporting Officers 
under the Alkermes plc 2018 Stock Option and Incentive Plan, as 
amended.
 
Exhibit 10.19-9 to the Alkermes 
plc Annual Report on Form 10-K 
(File No. 001-35299)
 
February 16, 2023
10.19J †
 
Form of Non-Qualified Stock Option Award Certificate for Reporting 
Officers under the Alkermes plc 2018 Stock Option and Incentive Plan, as 
amended.
 
Exhibit 10.19-10 to the Alkermes 
plc Annual Report on Form 10-K 
(File No. 001-35299)
 
February 16, 2023
10.19K †
 
Form of Restricted Stock Unit (Time-Vesting) Award Certificate for 
Reporting Officers under the Alkermes plc 2018 Stock Option and 
Incentive Plan, as amended.
 
Exhibit 10.19-11 to the Alkermes 
plc Annual Report on Form 10-K 
(File No. 001-35299)
 
February 16, 2023
10.19L †
 
Form of Restricted Stock Unit (Performance-Vesting) Award Certificate 
for Reporting Officers under the Alkermes plc 2018 Stock Option and 
Incentive Plan, as amended.
 
Exhibit 10.19-12 to the Alkermes 
plc Annual Report on Form 10-K 
(File No. 001-35299)
 
February 16, 2023
10.19M †
 
Form of Restricted Stock Unit (Performance-Vesting) Award Certificate 
(rev. 2024) for Reporting Officers under the Alkermes plc 2018 Stock 
Option and Incentive Plan, as amended.
 
Exhibit 10.25M to the Alkermes 
plc Annual Report on Form 10-K 
(File No. 001-35299)
 
February 21, 2024
10.19N †
 
Form of Restricted Stock Unit (Performance-Vesting) Award Certificate 
(rev. 2024) under the Alkermes plc 2018 Stock Option and Incentive Plan, 
as amended.
 
Exhibit 10.25N to the Alkermes 
plc Annual Report on Form 10-K 
(File No. 001-35299)
 
February 21, 2024
10.19O †
 
Form of Non-Employee Director Non-Qualified Stock Option Award 
Certificate (rev. 2024) under the Alkermes plc 2018 Stock Option and 
Incentive Plan, as amended.
 
Exhibit 10.2A to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
July 24, 2024
10.19P †
 
Form of Non-Employee Director Restricted Stock Unit Award (Time-
Vesting) Award Certificate (rev. 2024) under the Alkermes plc 2018 
Stock Option and Incentive Plan, as amended.
 
Exhibit 10.2A to the Alkermes plc 
Quarterly Report on Form 10-Q 
(File No. 001-35299)
 
July 24, 2024
19.1 #
 
Alkermes plc Insider Trading Policy.
 
 
 
 
21.1 #
 
List of subsidiaries.
 
 
 
 
23.1 #
 
Consent of PricewaterhouseCoopers LLP, an independent registered 
public accounting firm.
 
 
 
 
24.1 #
 
Power of Attorney (included on the signature pages hereto).
 
 
 
 
31.1 #
 
Certification Pursuant to Rule 13a-14(a) or Rule 15d-14(a) of the 
Securities Exchange Act of 1934.
 
 
 
 

 
77
 
 
 
 
 
 
 
 
 
Incorporated by reference herein
Exhibit No.
 
Description of Exhibit
 
Form
 
Date
31.2 #
 
Certification Pursuant to Rule 13a-14(a) or Rule 15d-14(a) of the 
Securities Exchange Act of 1934.
 
 
 
 
32.1 ‡
 
Certification Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.
 
 
 
 
97 †
 
Alkermes plc Incentive Compensation Recoupment Policy. 
 
Exhibit 97 to the Alkermes plc 
Annual Report on Form 10-K 
(File No. 001-35299)
 
February 21, 2024
101.SCH #
 
Inline XBRL Taxonomy Extension Schema with Embedded Linkbases 
Document. 
 
 
 
 
104
 
Cover Page Interactive Data File (formatted as Inline XBRL with 
applicable taxonomy extension information contained in Exhibits 101).
 
 
 
 
 
 
 
†
 
Indicates a management contract or any compensatory plan, contract or arrangement.
#
 
Filed herewith.
‡
 
Furnished herewith.
*
  Confidential treatment has been granted or requested for certain portions of this exhibit. Such portions have been filed separately with the 
SEC pursuant to a confidential treatment request.
**
  Portions of this exhibit (indicated by “[**]”) have been omitted pursuant to Item 601(b) of Regulation S-K. The Company undertakes to 
furnish an unredacted copy of this exhibit upon request by the U.S. Securities and Exchange Commission.
§
  Schedules and similar attachments to this exhibit have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The Company 
undertakes to furnish copies of any omitted schedules and similar attachments upon request by the U.S. Securities and Exchange 
Commission.
Item 16. Form 10-K Summary
None. 
 

 
78
SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed 
on its behalf by the undersigned, thereunto duly authorized.
 
 
ALKERMES PLC
 
 
 
 
By:
/s/ Richard F. Pops
Richard F. Pops
Chairman and Chief Executive Officer
 
 
 
February 12, 2025
 
 
 
POWER OF ATTORNEY
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the 
Registrant and in the capacities and on the dates indicated.
Each person whose signature appears below in so signing also makes, constitutes and appoints Richard F. Pops and Blair C. Jackson, and each of 
them, his true and lawful attorney-in-fact, with full power of substitution, for him in any and all capacities, to execute and cause to be filed with the 
Securities and Exchange Commission any and all amendments to this Annual Report, with exhibits thereto and other documents in connection therewith, 
and hereby ratifies and confirms all that said attorney-in-fact or his substitute or substitutes may do or cause to be done by virtue hereof.
 
Signature
 
Title
 
Date
 
 
 
 
 
/s/ Richard F. Pops
Richard F. Pops
 
Chairman and Chief Executive Officer (Principal Executive Officer)
 
February 12, 2025
 
 
 
 
 
/s/ Blair C. Jackson
Blair C. Jackson
 
Executive Vice President, Chief Operating Officer (Interim Principal 
Financial Officer)
 
February 12, 2025
 
 
 
 
 
/s/ Samuel J. Parisi
Samuel J. Parisi
 
Vice President, Finance (Interim Principal Accounting Officer)
 
February 12, 2025
 
 
 
 
 
/s/ Emily Peterson Alva
Emily Peterson Alva
 
Director
 
February 12, 2025
 
 
 
 
 
/s/ Shane M. Cooke
Shane M. Cooke
 
Director
 
February 12, 2025
 
 
 
 
 
/s/ David A. Daglio, Jr.
 
Director
 
February 12, 2025
David A. Daglio, Jr.
 
 
 
 
 
/s/ Richard B. Gaynor
Richard B. Gaynor
 
Director
 
February 12, 2025
 
 
 
 
 
/s/ Cato T. Laurencin
 
Director
 
February 12, 2025
Cato T. Laurencin
 
 
 
 
 
/s/ Nancy S. Lurker
Nancy S. Lurker
 
Director
 
February 12, 2025
 
 
 
 
 
/s/ Brian P. McKeon
Brian P. McKeon
 
Director
 
February 12, 2025
 
 
 
 
 
/s/ Nancy L. Snyderman
Nancy L. Snyderman
 
Director
 
February 12, 2025
 
 
 
 
 
/s/ Frank Anders Wilson
Frank Anders Wilson
 
Director
 
February 12, 2025
 
 
 
 
 
/s/ Christopher I. Wright
Christopher I. Wright
 
Director
 
February 12, 2025
 

 
F-1
Report of Independent Registered Public Accounting Firm
 
To the Board of Directors and Shareholders of Alkermes plc
Opinions on the Financial Statements and Internal Control over Financial Reporting
We have audited the accompanying consolidated balance sheets of Alkermes plc and its subsidiaries (the “Company”) as of December 31, 
2024 and 2023, and the related consolidated statements of operations and comprehensive income (loss), of shareholders’ equity and of cash 
flows for each of the three years in the period ended December 31, 2024, including the related notes (collectively referred to as the 
“consolidated financial statements”). We also have audited the Company's internal control over financial reporting as of December 31, 2024, 
based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the 
Treadway Commission (COSO). 
In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the 
Company as of December 31, 2024 and 2023, and the results of its operations and its cash flows for each of the three years in the period 
ended December 31, 2024 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, 
the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2024, based on 
criteria established in Internal Control - Integrated Framework (2013) issued by the COSO.
Basis for Opinions
The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over 
financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in Management’s Annual 
Report on Internal Control over Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on the Company’s 
consolidated financial statements and on the Company's internal control over financial reporting based on our audits. We are a public 
accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be 
independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the 
Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to 
obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or 
fraud, and whether effective internal control over financial reporting was maintained in all material respects.
Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the 
consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures 
included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also 
included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall 
presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an 
understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the 
design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures 
as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.
Definition and Limitations of Internal Control over Financial Reporting
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of 
financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting 
principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of 
records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide 
reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally 
accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of 
management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized 
acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements. 

 
F-2
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any 
evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or 
that the degree of compliance with the policies or procedures may deteriorate.
Critical Audit Matters
The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that 
was communicated or required to be communicated to the audit committee and that (i) relates to accounts or disclosures that are material to 
the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The communication of 
critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by 
communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to 
which it relates.
Rebate Accruals – Medicaid Drug Rebate Program
As described in Notes 2 and 11 to the consolidated financial statements, the Company’s revenues from product sales are recorded net of 
reserves established for applicable discounts and allowances that are offered within contracts with the Company’s customers, health care 
providers or payers. The Company records accruals for rebates to U.S. states under the Medicaid Drug Rebate Program as a reduction of sales 
when the product is shipped into the distribution channel using the expected value method. As of December 31, 2024, accrued Medicaid 
rebates were $202.0 million, of which a significant amount related to the Medicaid Drug Rebate Program. The Company rebates individual 
U.S. states for all eligible units purchased under the Medicaid program based on a rebate per unit calculation, which is based on the 
Company’s average manufacturer prices. The Company estimates expected unit sales to individuals covered by Medicaid and rebates per unit 
under the Medicaid program and adjusts its rebate accrual based on actual unit sales and rebates per unit and changes in trends in Medicaid 
utilization.
The principal considerations for our determination that performing procedures relating to rebate accruals for the Medicaid Drug Rebate 
Program is a critical audit matter are (i) the significant judgment by management due to significant measurement uncertainty involved in 
developing the reserves, as the reserves are based on assumptions developed using historical experience, current contractual requirements, 
specific known market events and payment patterns and (ii) a high degree of auditor judgment, subjectivity and effort in applying procedures 
and evaluating evidence related to these assumptions.
Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the 
consolidated financial statements. These procedures included testing the effectiveness of controls relating to rebate accruals for the Medicaid 
Drug Rebate Program, including controls over the assumptions used to estimate the rebate accruals. These procedures also included, among 
others, (i) developing an independent estimate of the rebate accruals by utilizing third-party data related to product sales, the historical trend 
of actual rebate claims paid and consideration of contractual requirement changes and market events; (ii) comparing the independent 
estimate to management’s estimate; and (iii) testing rebate claims processed by the Company.
 
 
/s/ PricewaterhouseCoopers LLP
 
Boston, Massachusetts
February 12, 2025
 
We have served as the Company’s auditor since 2007.

 
F-3
ALKERMES PLC AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
December 31, 2024 and 2023
 
 
 
December 31, 2024
   
December 31, 2023
 
 
 
(In thousands, except share and per share amounts)
 
ASSETS
   
     
 
CURRENT ASSETS:
 
      
 
Cash and cash equivalents
  $
291,146     $
457,469  
Investments—short-term
   
460,522      
316,022  
Receivables, net
   
384,528      
332,477  
Inventory
   
182,887      
186,406  
Prepaid expenses and other current assets
   
91,282      
98,166  
Contract assets
   
4,990      
706  
Assets held for sale
   
—      
94,260  
Total current assets
   
1,415,355      
1,485,506  
PROPERTY, PLANT AND EQUIPMENT, NET
   
227,564      
226,943  
INVESTMENTS—LONG-TERM
   
73,148      
39,887  
RIGHT-OF-USE ASSETS
   
84,245      
91,460  
INTANGIBLE ASSETS, NET AND GOODWILL
   
83,917      
85,018  
DEFERRED TAX ASSETS
   
154,835      
195,888  
OTHER ASSETS
   
16,503      
11,521  
TOTAL ASSETS
  $
2,055,567     $
2,136,223  
LIABILITIES AND SHAREHOLDERS’ EQUITY
 
    
   
CURRENT LIABILITIES:
 
    
   
Accounts payable and accrued expenses
  $
185,332     $
240,561  
Accrued sales discounts, allowances and reserves
   
272,452      
263,641  
Operating lease liabilities—short-term
   
6,166      
5,746  
Contract liabilities—short-term
   
1,249      
2,730  
Current portion of long-term debt
   
—      
3,000  
Liabilities related to discontinued operations
   
—      
4,542  
Total current liabilities
   
465,199      
520,220  
LONG-TERM DEBT
   
—      
287,730  
OPERATING LEASE LIABILITIES—LONG-TERM
   
69,372      
75,709  
OTHER LONG-TERM LIABILITIES
   
56,019      
49,878  
Total liabilities
   
590,590      
933,537  
COMMITMENTS AND CONTINGENT LIABILITIES (Note 19)
 
    
   
SHAREHOLDERS’ EQUITY:
 
    
   
Preferred shares, par value, $0.01 per share; 50,000,000 shares authorized; and zero issued and 
outstanding at December 31, 2024 and 2023
   
—      
—  
Ordinary shares, par value, $0.01 per share; 450,000,000 shares authorized; 176,670,785 and 
172,569,051 shares issued; and 162,176,994 and 166,979,833 shares outstanding at December 31, 
2024 and 2023, respectively
   
1,767      
1,726  
Treasury shares, at cost (14,493,791 and 5,589,218 shares at December 31, 2024 and 2023, 
respectively)
   
(419,255 )    
(189,336 )
Additional paid-in capital
   
2,860,890      
2,736,934  
Accumulated other comprehensive loss
   
(1,967 )    
(3,110 )
Accumulated deficit
   
(976,458 )    
(1,343,528 )
Total shareholders’ equity
   
1,464,977      
1,202,686  
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY
  $
2,055,567     $
2,136,223  
 
The accompanying notes are an integral part of these consolidated financial statements.

 
F-4
ALKERMES PLC AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)
Years Ended December 31, 2024, 2023 and 2022
 
 
 
 
 
Year Ended December 31,
 
 
2024
   
2023
   
2022
 
 
(In thousands, except per share amounts)
 
REVENUES:
 
     
     
 
Product sales, net
$
1,083,534     $
919,998     $
777,552  
Manufacturing and royalty revenues
 
474,095      
743,388      
331,983  
License revenue
 
—      
—      
2,000  
Research and development revenue
 
3      
19      
260  
Total revenues
 
1,557,632      
1,663,405      
1,111,795  
EXPENSES:
 
     
     
 
Cost of goods manufactured and sold (exclusive of amortization of acquired intangible 
assets shown below)
 
245,331      
253,037      
218,068  
Research and development
 
245,326      
270,806      
272,702  
Selling, general and administrative
 
645,238      
689,751      
590,751  
Amortization of acquired intangible assets
 
1,101      
35,689      
36,363  
Total expenses
 
1,136,996      
1,249,283      
1,117,884  
OPERATING INCOME FROM CONTINUING OPERATIONS
 
420,636      
414,122      
(6,089 )
OTHER INCOME (EXPENSE), NET:
 
     
     
 
Interest income
 
42,450      
30,854      
7,629  
Interest expense
 
(22,578 )    
(23,032 )    
(13,040 )
Change in the fair value of contingent consideration
 
—      
—      
(21,750 )
Other income (expense), net
 
3,242      
(425 )    
2,122  
Total other income (expense), net
 
23,114      
7,397      
(25,039 )
INCOME (LOSS) BEFORE INCOME TAXES
 
443,750      
421,519      
(31,128 )
INCOME TAX PROVISION (BENEFIT)
 
71,612      
(97,638 )    
2,024  
NET INCOME (LOSS) FROM CONTINUING OPERATIONS
 
372,138      
519,157      
(33,152 )
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAX
 
(5,068 )    
(163,400 )    
(125,115 )
NET INCOME (LOSS)
$
367,070     $
355,757     $
(158,267 )
 
 
     
     
 
EARNINGS (LOSS) PER ORDINARY SHARE:
 
     
     
 
Earnings (loss) per ordinary share from continuing operations - basic
$
2.25     $
3.12     $
(0.20 )
Loss per ordinary share from discontinued operations - basic
$
(0.03 )   $
(0.98 )   $
(0.76 )
Earnings (loss) per ordinary share - basic
$
2.22     $
2.14     $
(0.97 )
 
     
     
   
Earnings (loss) per ordinary share from continuing operations - diluted
$
2.20     $
3.06     $
(0.20 )
Loss per ordinary share from discontinued operations - diluted
$
(0.03 )   $
(0.96 )   $
(0.76 )
Earnings (loss) per ordinary share - diluted
$
2.17     $
2.10     $
(0.97 )
WEIGHTED AVERAGE NUMBER OF ORDINARY SHARES OUTSTANDING:
 
     
     
 
Basic
 
165,392      
166,223      
163,742  
Diluted
 
169,198      
169,730      
163,742  
COMPREHENSIVE INCOME (LOSS):
 
     
     
 
Net income (loss)
$
367,070     $
355,757     $
(158,267 )
Holding gain (loss), net of a tax provision (benefit) of $292, $1,195 and $(973), respectively  
1,143      
7,779      
(7,166 )
COMPREHENSIVE INCOME (LOSS)
$
368,213     $
363,536     $
(165,433 )
 
The accompanying notes are an integral part of these consolidated financial statements.
 

 
F-5
ALKERMES PLC AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY
Years Ended December 31, 2024, 2023 and 2022
 
 
 
 
   
 
   
 
   
Accumulate
d
   
 
   
 
   
 
   
 
 
 
 
 
   
 
    Additional    
Other
   
 
   
 
   
 
   
 
 
 
 
Ordinary Shares
   
Paid-In
   
Comprehen
sive
   
Accumulat
ed
   
Treasury Stock
   
 
 
 
 
Shares
   
Amount
   
Capital
   
Loss
   
Deficit
   
Shares
   
Amount
   
Total
 
 
 
(In thousands, except share data)
 
BALANCE — December 31, 2021
   
165,790,54
9     $
1,658     $ 2,798,325     $
(3,723 )   $
(1,541,01
8 )     (3,853,222 )   $
(142,658 )   $
1,112,584  
Issuance of ordinary shares under employee stock 
plans
   
3,160,644      
32      
19,598      
—      
—      
—      
—      
19,630  
Receipt of Alkermes' ordinary shares for the purchase 
of stock options or to satisfy minimum tax 
withholding obligations related to share-based awards    
—      
—      
—      
—      
—      
(720,962 )    
(18,204 )    
(18,204 )
Share-based compensation
   
—      
—      
95,176      
—      
—      
—      
—      
95,176  
Unrealized loss on marketable securities, net of tax 
benefit of $973
   
—      
—      
—      
(7,166 )    
—      
—      
—      
(7,166 )
Net loss
   
—      
—      
—      
—      
(158,267 )    
—      
—      
(158,267 )
BALANCE — December 31, 2022
   
168,951,19
3     $
1,690     $ 2,913,099     $
(10,889 )   $
(1,699,28
5 )     (4,574,184 )   $
(160,862 )   $
1,043,753  
Issuance of ordinary shares under employee stock 
plans
   
3,617,858      
36      
16,724      
—      
—      
—      
—      
16,760  
Receipt of Alkermes' ordinary shares for the purchase 
of stock options or to satisfy minimum tax 
withholding obligations related to share-based awards    
—      
—      
—      
—      
—       (1,015,034 )    
(28,474 )    
(28,474 )
Share-based compensation
   
—      
—      
100,871      
—      
—      
—      
—      
100,871  
Unrealized gain on marketable securities, net of tax 
provision of $1,195
   
—      
—      
—      
7,779      
—      
—      
—      
7,779  
Distribution of Mural Oncology plc
   
—      
—      
(293,760 )    
—      
—      
—      
—      
(293,760 )
Net income
   
—      
—      
—      
—      
355,757      
—      
—      
355,757  
BALANCE —December 31, 2023
   
172,569,05
1     $
1,726     $ 2,736,934     $
(3,110 )   $
(1,343,52
8 )     (5,589,218 )   $
(189,336 )   $
1,202,686  
Issuance of ordinary shares under employee stock 
plans
   
4,101,734      
41      
27,531      
—      
—      
—      
—      
27,572  
Receipt of Alkermes' ordinary shares for the purchase 
of stock options or to satisfy minimum tax 
withholding obligations related to share-based awards    
—      
—      
—      
—      
—       (1,010,156 )    
(29,637 )    
(29,637 )
Repurchase of Alkermes' ordinary shares
   
—      
—      
—      
—      
—       (7,894,417 )    
(200,282 )    
(200,282 )
Share-based compensation
   
—      
—      
96,425      
—      
—      
—      
—      
96,425  
Unrealized gain on marketable securities, net of tax 
provision of $292
   
—      
—      
—      
1,143      
—      
—      
—      
1,143  
Net income
   
—      
—      
—      
—      
367,070      
—      
—      
367,070  
BALANCE —December 31, 2024
   
176,670,78
5     $
1,767     $ 2,860,890     $
(1,967 )   $ (976,458 )    
(14,493,79
1 )   $
(419,255 )   $
1,464,977  
 
The accompanying notes are an integral part of these consolidated financial statements.
 
 

 
F-6
ALKERMES PLC AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
Years Ended December 31, 2024, 2023 and 2022
 
 
 
   
 
   
 
 
 
Year Ended December 31,
 
 
2024
   
2023
   
2022
 
 
(In thousands)
 
CASH FLOWS FROM OPERATING ACTIVITIES:
 
     
     
 
Net income (loss)
$
367,070     $
355,757     $
(158,267 )
Adjustments to reconcile net income (loss) to cash flows from operating activities:
 
     
     
 
Depreciation and amortization
 
28,533      
74,927      
77,862  
Share-based compensation expense
 
96,637      
100,905      
94,254  
Deferred income taxes
 
40,522      
(99,902 )    
(32,795 )
Change in the fair value of contingent consideration
 
—      
—      
21,750  
Other non-cash charges
 
4,512      
6,329      
5,531  
Changes in assets and liabilities:
 
     
     
 
Receivables
 
(52,052 )    
(44,510 )    
25,250  
Contract assets
 
(4,284 )    
8,223      
4,434  
Inventory
 
3,091      
(2,712 )    
(31,021 )
Prepaid expenses and other assets
 
2,254      
(34,847 )    
(5,328 )
Right-of-use assets
 
7,215      
15,387      
16,569  
Accounts payable and accrued expenses
 
(57,967 )    
23,009      
15,534  
Accrued sales discounts, allowances and reserves
 
8,811      
11,526      
14,899  
Contract liabilities
 
(3,525 )    
(5,926 )    
(7,129 )
Operating lease liabilities
 
(10,123 )    
(16,147 )    
(33,225 )
Other long-term liabilities
 
8,430      
9,334      
12,726  
Cash flows provided by operating activities
 
439,124      
401,353      
21,044  
CASH FLOWS FROM INVESTING ACTIVITIES:
 
     
     
 
Additions of property, plant and equipment
 
(33,484 )    
(48,048 )    
(38,255 )
Proceeds from the sale of equipment
 
461      
354      
—  
Proceeds from contingent consideration
 
—      
—      
1,273  
Return of Fountain Healthcare Partners II, L.P. investment
 
43      
—      
485  
Proceeds from the sale of the Athlone Facility
 
97,933      
—      
—  
Purchases of investments
 
(486,547 )    
(254,471 )    
(309,671 )
Sales and maturities of investments
 
310,286      
355,522      
281,627  
Cash flows (used in) provided by investing activities
 
(111,308 )    
53,357      
(64,541 )
CASH FLOWS FROM FINANCING ACTIVITIES:
     
     
   
Cash transferred to Mural Oncology plc at separation
 
—      
(275,000 )    
—  
Proceeds from the issuance of ordinary shares under share-based compensation arrangements
 
27,572      
16,760      
19,630  
Employee taxes paid related to net share settlement of equity awards
 
(29,637 )    
(28,474 )    
(18,204 )
Payment for the repurchase of ordinary shares
 
(200,282 )    
—      
—  
Prepayment of long-term debt
 
(289,542 )    
—      
—  
Principal payments of long-term debt
 
(2,250 )    
(3,000 )    
(3,000 )
Cash flows used in financing activities
 
(494,139 )    
(289,714 )    
(1,574 )
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS
 
(166,323 )    
164,996      
(45,071 )
CASH AND CASH EQUIVALENTS—Beginning of period
 
457,469      
292,473      
337,544  
CASH AND CASH EQUIVALENTS—End of period
$
291,146     $
457,469     $
292,473  
SUPPLEMENTAL CASH FLOW DISCLOSURE:
 
     
     
 
Cash paid for interest
$
23,010     $
22,748     $
13,563  
Cash paid for taxes
$
2,592     $
44,243     $
20,749  
Non-cash investing and financing activities:
 
     
     
 
Purchased capital expenditures included in accounts payable and accrued expenses
$
2,254     $
2,645     $
2,950  
 
The accompanying notes are an integral part of these consolidated financial statements.

 
F-7
ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
1. DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION
Alkermes plc is a global biopharmaceutical company that seeks to develop innovative medicines in the field of neuroscience. Alkermes has a portfolio 
of proprietary commercial products for the treatment of alcohol dependence and opioid dependence, schizophrenia and bipolar I disorder and a pipeline of 
clinical and preclinical candidates in development for neurological disorders, including narcolepsy and idiopathic hypersomnia. Headquartered in Ireland, 
Alkermes also has a corporate office and research and development (“R&D”) center in Massachusetts and a manufacturing facility in Ohio.
In May 2024, the Company completed the sale of its development and manufacturing facility in Athlone, Ireland (the “Athlone Facility”) and related 
business to Novo Nordisk (“Novo”) pursuant to an asset purchase agreement entered into in December 2023. The Company and Novo also entered into 
subcontracting arrangements to continue certain development and manufacturing activities performed at the Athlone Facility for a period of time after the 
closing of the transaction, which activities may continue through the end of 2025. In connection with the sale of the Athlone Facility, the Company 
received $97.9 million from Novo, which included a payment of approximately $91.0 million for the facility and certain related assets, and recorded a gain 
of approximately $1.5 million within “Other income (expense), net” in the accompanying consolidated statements of operations and comprehensive income 
(loss) for the year ended December 31, 2024. As of December 31, 2023, the Company classified the assets described under the asset purchase agreement 
for the sale as “Assets held for sale” in the accompanying consolidated balance sheet.
In November 2023, the Company completed the separation of its former oncology business into Mural Oncology plc (“Mural”), a new, independent, 
publicly-traded company (the “Separation”). The Separation was effected by means of a distribution of all of the outstanding ordinary shares of Mural to 
the Company’s shareholders (the “Distribution”), in which each of the Company’s shareholders received one ordinary share, nominal value $0.01 per share, 
of Mural for every ten ordinary shares, par value $0.01 per share, of the Company (the “Distribution Ratio”) held by such shareholder as of the close of 
business on November 6, 2023, the record date for the Distribution (the “Record Date”). The historical results of the oncology business have been reflected 
as discontinued operations in the Company’s consolidated financial statements through November 15, 2023 (the “Separation Date”). For additional 
information related to the Separation, see Note 3, Discontinued Operations in these “Notes to Consolidated Financial Statements” in this Annual Report. 
2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Principles of Consolidation
The consolidated financial statements include the accounts of Alkermes plc and its wholly-owned subsidiaries. Intercompany accounts and 
transactions have been eliminated. Columns and rows within tables may not sum due to rounding.
Reclassification
The Company has presented its former oncology business as discontinued operations in its consolidated financial statements as of December 31, 
2023 and for the years ended December 31, 2023 and 2022. See Note 3, Discontinued Operations in these “Notes to Consolidated Financial Statements” in 
this Annual Report for additional information.
Discontinued Operations
The Company determined that the Separation met the criteria for classification of the former oncology business as discontinued operations in 
accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 205, Discontinued Operations. 
Accordingly, the accompanying consolidated financial statements have been updated to present the results of the oncology business as discontinued 
operations through the Separation Date for the years ended December 31, 2023 and 2022 in the consolidated statements of operations and comprehensive 
income (loss). 
Assets Held for Sale
In connection with the sale of the Athlone Facility, the Company reviewed FASB ASC 805, Business Combinations (“Topic 805”) and, based on the 
definitions therein, determined that the Athlone Facility constituted a business. Accordingly, the assets associated with the sale of the Athlone Facility were 
classified as “Assets held for sale” in the accompanying consolidated balance sheet as of December 31, 2023.

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-8
Use of Estimates
The preparation of the Company’s consolidated financial statements in accordance with accounting principles generally accepted in the United 
States (“GAAP”) requires that Company management make estimates, judgments and assumptions that may affect the reported amounts of assets, 
liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an on-going basis, the Company evaluates its estimates, 
judgments and methodologies, including but not limited to, those related to revenue from contracts with its customers and related allowances, impairment 
of intangibles and long-lived assets, share-based compensation, income taxes including the valuation allowance for deferred tax assets, valuation of 
investments and litigation. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, 
the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results may differ from these estimates 
under different assumptions or conditions.
Cash and Cash Equivalents
The Company values its cash and cash equivalents at cost plus accrued interest, which the Company believes approximates its market value. The 
Company considers as cash equivalents only those investments that are highly liquid, readily convertible into cash and so near their maturity (three months 
from the date of purchase) that they present insignificant risk of change in value because of interest rate changes.
Investments
The Company has investments in various types of securities, consisting primarily of United States (“U.S.”). government and agency obligations and 
corporate debt securities. The Company generally holds its interest-bearing investments with major financial institutions and in accordance with 
documented investment policies. The Company limits the amount of credit exposure to any one financial institution or corporate issuer. At December 31, 
2024, substantially all these investments were classified as available-for-sale and were recorded at fair value. 
Unrealized gains and losses are included in accumulated other comprehensive loss in equity, net of related tax, unless: (i) the security has 
experienced a credit loss; (ii) the Company has determined that it has the intent to sell the security; or (iii) the Company has determined that it is more 
likely than not that it will have to sell the security before its expected recovery. Periodic reviews are conducted to identify and evaluate each investment 
that has an unrealized loss in accordance with the meaning of other-than-temporary impairment. An unrealized loss exists when the current fair value of an 
individual security is less than its amortized cost basis.
For available-for-sale debt securities with unrealized losses, the Company performs an analysis to assess whether it intends to sell, or whether it 
would more likely than not be required to sell, the security before the expected recovery of the amortized cost basis. Where the Company intends to sell a 
security, or may be required to do so, the security’s decline in fair value is deemed to be other-than-temporary and the full amount of the unrealized loss is 
reflected in earnings as an impairment loss.
Regardless of the Company’s intent to sell a security, the Company performs additional analysis on all securities with unrealized losses to evaluate 
losses associated with the creditworthiness of the security. Credit losses are identified where the Company does not expect to receive cash flows sufficient 
to recover the amortized cost basis of a security.
The Company’s held-to-maturity investments are restricted investments held as collateral under letters of credit related to certain of the Company’s 
agreements and are included in “Investments—long-term,” in the accompanying consolidated balance sheets.
Fair Value of Financial Instruments
The Company’s financial assets and liabilities are recorded at fair value and are classified as Level 1, 2 or 3 within the fair value hierarchy, as 
described in the accounting standards for fair value measurement. At December 31, 2024, the Company’s financial assets consisted of cash equivalents and 
investments and are classified within the fair value hierarchy as follows:
•
Level 1–these valuations are based on a market approach using quoted prices in active markets for identical assets. Valuations of these 
products do not require a significant degree of judgment. Assets utilizing Level 1 inputs at December 31, 2024 included U.S. treasury 
securities, marketable securities classified as cash equivalents and a fixed term deposit account; and 
•
Level 2–these valuations are based on quoted prices for identical or similar assets in active markets or other market observable inputs such as 
interest rates, yield curves, foreign currency spot rates and option pricing valuation models. Assets utilizing Level 2 inputs at December 31, 
2024 included U.S. government agency debt securities and investments in corporate debt securities that are trading in the credit markets.

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-9
The carrying amounts reflected in the consolidated balance sheets for cash and cash equivalents, accounts receivable, contract assets, other current 
assets, accounts payable and accrued expenses and accrued sales discounts, allowances and reserves approximate fair value due to their short-term nature.
Inventory
Inventory is stated at the lower of cost and net realizable value. The Company utilizes a standard cost basis, which approximates cost determined 
using the first-in first-out method. Cost is determined using the first-in, first-out method. Included in inventory are raw materials used in production of 
preclinical and clinical products, which have alternative future use and are charged to R&D expense when consumed. The cost elements included within 
inventory include three primary categories for commercial products: cost of raw materials; direct labor; and overhead. Overhead is based on the normal 
capacity of the Company’s production facility and does not include costs from abnormally low production or idle capacity, which are expensed directly to 
the consolidated statement of operations and comprehensive income (loss).
The Company capitalizes inventory costs associated with its products prior to regulatory approval when, based on management’s judgment, future 
commercialization of the product is considered probable and future economic benefit from such product is expected to be realized. The Company assesses 
the regulatory approval process and where the particular product stands in relation to that approval process, including any known safety, efficacy or quality 
concerns, potential labeling restrictions and other potential impediments to approval. The Company also considers the shelf life of the product in relation to 
the expected timeline for approval and considers issues that may prevent or delay commercialization, including issues that may arise in relation to the 
manufacturing of the product. The Company expenses previously capitalized costs related to pre-approval inventory upon a change in such judgment, due 
to, among other potential factors, a denial or significant delay of approval by relevant regulatory agencies or other issues that may make the pre-approval 
inventory batches less likely or unlikely to be commercialized and to result in future economic benefit.
Property, Plant and Equipment
Property, plant and equipment are recorded at cost, subject to review for impairment whenever events or changes in circumstances indicate that the 
carrying amount of the assets may not be recoverable. Expenditures for repairs and maintenance are charged to expense as incurred and major renewals and 
improvements are capitalized. Depreciation is calculated using the straight-line method over the following estimated useful lives of the assets:
 
Asset group
 
Term
Buildings and improvements
 
25 years
Furniture, fixtures and equipment
 
5 - 7 years
Leasehold improvements
 
Shorter of useful life or lease term
Goodwill and Intangible Assets
Goodwill represents the excess cost of the Company’s investment in the net assets of acquired companies over the fair value of the underlying 
identifiable net assets at the date of acquisition. The Company’s goodwill consists solely of goodwill created as a result of the Company’s acquisition of 
Elan Drug Technologies (“EDT”) from Elan Corporation, plc (such acquisition, the “Business Combination”) in September 2011 and has been assigned to 
one reporting unit. A reporting unit is an operating segment or one level below an operating segment or a component to which goodwill is assigned when 
initially recorded.
Goodwill is not amortized but is reviewed for impairment on an annual basis, as of October 31, and whenever events or changes in circumstances 
indicate that the carrying value of the goodwill might not be recoverable. The Company has the option to first assess qualitative factors to determine 
whether it is necessary to perform the quantitative impairment test. If the Company elects this option and believes, as a result of the qualitative assessment, 
that it is more-likely-than-not that the fair value of its reporting unit is less than its carrying amount, the quantitative impairment test is required; otherwise, 
no further testing is required. Alternatively, the Company may elect to not first assess qualitative factors and immediately perform the quantitative 
impairment test. In the quantitative impairment test, the Company compares the fair value of its reporting unit to its carrying value. If the carrying value of 
the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, then the Company would record an impairment loss equal to the 
difference.
When some, but not all, of a reporting unit is to be disposed of, the accounting for that reporting unit’s goodwill will depend on whether the disposal 
group constitutes a business. If the disposal group constitutes a business, the Company attributes a portion of the reporting unit’s goodwill to the disposal 
group based on the relative fair values of: (i) the disposal group; and (ii) the portion of the reporting unit that will be retained. 

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-10
The Company’s finite-lived intangible assets, consisting of core developed technology and collaboration agreements acquired as part of the Business 
Combination, were recorded at fair value at the time of their acquisition and are stated within the Company’s consolidated balance sheets net of 
accumulated amortization. The finite-lived intangible assets are amortized over their estimated useful lives using the economic use method, which reflects 
the pattern that the economic benefits of the intangible assets are consumed as revenue is generated from the underlying patent or contract. The useful lives 
of the Company’s intangible assets are primarily based on the legal or contractual life of the underlying patent or contract, which does not include 
additional years for the potential extension or renewal of the contract or patent.
Impairment of Long-Lived Assets
The Company reviews long-lived assets to be held and used for impairment whenever events or changes in circumstances indicate that the carrying 
amount of the assets may not be recoverable. Conditions that would necessitate an impairment assessment include a significant decline in the observable 
market value of an asset; a significant change in the extent or manner in which an asset is used; a significant adverse change in legal factors or in the 
business climate that could affect the value of a long-lived asset; an accumulation of costs significantly in excess of the amount originally expected for the 
acquisition or construction of a long-lived asset; a current-period operating or cash flow loss combined with a history of operating or cash-flow losses or a 
projection or forecast that demonstrates continuing losses associated with the use of a long-lived asset; or a current expectation that, more likely than not, a 
long-lived asset will be sold or otherwise disposed of significantly before the end of its previously estimated useful life. Determination of recoverability is 
based on an estimate of undiscounted future cash flows resulting from the use of the asset and its eventual disposition. In the event that such cash flows are 
not expected to be sufficient to recover the carrying amount of the assets, the assets are written-down to their estimated fair values. Long-lived assets to be 
disposed of are carried at fair value less costs to sell them.
Revenue from Contracts with Customers 
The Company recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration 
which it expects to receive in exchange for those goods or services. The Company recognizes revenue following the five-step model prescribed in 
accordance with FASB ASC 606, Revenue from Contracts with Customers (“Topic 606”): (i) identify contract(s) with a customer; (ii) identify the 
performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the 
contract; and (v) recognize revenue when (or as) the Company satisfies the performance obligations. 
Product Sales, Net
The Company’s product sales, net consist of sales in the U.S. of VIVITROL®, ARISTADA®, ARISTADA INITIO® and LYBALVI®, primarily to 
wholesalers, specialty distributors and pharmacies. Product sales, net are recognized when the customer obtains control of the product, which is when the 
product has been received by the customer.
Revenues from product sales are recorded net of reserves established for applicable discounts and allowances that are offered within contracts with 
the Company’s customers, healthcare providers or payers. The Company’s process for estimating reserves established for these variable consideration 
components does not differ materially from historical practices. The transaction price, which includes variable consideration reflecting the impact of 
discounts and allowances, may be subject to constraint and is included in the net sales price only to the extent that it is probable that a significant reversal 
of the amount of the cumulative revenues recognized will not occur in a future period. Actual amounts may ultimately differ from the Company’s 
estimates. If actual results vary, the Company adjusts these estimates, which could have an effect on earnings in the period of adjustment. The following are 
the Company’s significant categories of sales discounts and allowances:
•
Medicaid Rebates—the Company records accruals for rebates to U.S. states under the Medicaid Drug Rebate Program as a reduction of sales 
when the product is shipped into the distribution channel using the expected value method. The Company rebates individual U.S. states for 
all eligible units purchased under the Medicaid program based on a rebate per unit calculation, which is based on the Company’s average 
manufacturer prices. The Company estimates expected unit sales to individuals covered by Medicaid and rebates per unit under the Medicaid 
program and adjusts its rebate accrual based on actual unit sales and rebates per unit and changes in trends in Medicaid utilization. In 2024, 
actual Medicaid utilization rates related to VIVITROL were lower than original estimates, due, in part, to $8.7 million in actual credits 
received from certain states in the fourth quarter of 2024 related to duplicate Medicaid billings. Medicaid rebates for the Company’s other 
products have not differed materially from the Company’s estimates; 
•
Chargebacks—discounts that occur when contracted indirect customers purchase directly from wholesalers and specialty distributors. 
Contracted customers generally purchase a product at its contracted price. The wholesaler or specialty distributor, in turn, then generally 
charges back to the Company the difference between the wholesale acquisition cost and the contracted price paid to the wholesaler or 
specialty distributor by the customer. The allowance for chargebacks is made using the expected value method and is based on actual and 
expected utilization of these programs. Chargebacks could exceed historical experience and the Company’s estimates of future participation 
in these programs. To date, actual chargebacks have not differed materially from the Company’s estimates;

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-11
•
Product Discounts—cash consideration, including sales incentives, given by the Company under agreements with a number of wholesaler, 
distributor, pharmacy, and treatment provider customers that provide them with a discount on the purchase price of products. The reserve is 
made using the expected value method and to date, actual product discounts have not differed materially from the Company’s estimates; 
•
Product Returns—the Company records an estimate for product returns at the time its customers take control of their product. The Company 
estimates this liability using the expected returns of product sold based on historical return levels and specifically identified anticipated 
returns due to known business conditions and product expiry dates. Return amounts are recorded as a reduction of sales. Once product is 
returned, it is destroyed. To date, actual product returns have not differed materially from the Company’s estimates; and
•
Medicare Part D—the Company records accruals for Medicare Part D liabilities under the Medicare Coverage Gap Discount Program 
(“CGDP”) as a reduction of sales. Under the CGDP, patients reaching the annual coverage gap threshold are eligible for reimbursement 
coverage for out-of-pocket costs for covered prescription drugs. Under an agreement with the Centers for Medicare and Medicaid Services, 
manufacturers are responsible to reimburse prescription plan sponsors for the portion of out-of-pocket expenses not covered under their 
Medicare plans. To date, actual Medicare Part D rebates have not differed materially from the Company’s estimates.
A rollforward of the Company’s provisions for sales and allowances is as follows:
 
 
 
December 31, 2024
 
(In thousands)
 
Contractual 
Adjustments 
   
Discounts 
    Product Returns    
Other
   
Total
 
Beginning balance — December 31, 2023
  $
234,414     $
28,690     $
41,064     $
10,164     $
314,332  
Current provisions relating to sales in current year
   
557,651      
386,625      
28,627      
87,373      
1,060,276  
Adjustments relating to prior years
   
(20,562 )    
—      
(3,700 )    
—      
(24,262 )
Payments/credits relating to sales in current year
   
(369,869 )    
(353,629 )    
—      
(70,752 )    
(794,250 )
Payments/credits relating to sales in prior years
   
(172,656 )    
(18,041 )    
(15,484 )    
(13,488 )    
(219,669 )
Ending balance — December 31, 2024
  $
228,978     $
43,645     $
50,507     $
13,297     $
336,427  
 
 
 
December 31, 2023
 
(In thousands)
 
Contractual 
Adjustments 
   
Discounts 
    Product Returns    
Other
   
Total
 
Beginning balance — December 31, 2022
  $
226,741     $
26,175     $
29,666     $
7,938     $
290,520  
Current provisions relating to sales in current year
   
509,780      
326,860      
33,417      
71,449      
941,506  
Adjustments relating to prior years
   
(8,921 )    
—      
2,841      
—      
(6,080 )
Payments/credits relating to sales in current year
   
(308,353 )    
(293,785 )    
—      
(56,224 )    
(658,362 )
Payments/credits relating to sales in prior years
   
(184,833 )    
(30,560 )    
(24,860 )    
(12,999 )    
(253,252 )
Ending balance — December 31, 2023
  $
234,414     $
28,690     $
41,064     $
10,164     $
314,332  
 
 
 
December 31, 2022
 
(In thousands)
 
Contractual 
Adjustments 
   
Discounts 
    Product Returns    
Other
   
Total
 
Beginning balance — December 31, 2021
  $
209,760     $
24,150     $
24,313     $
9,585     $
267,808  
Current provisions relating to sales in current year
   
434,143      
281,308      
15,851      
58,788      
790,090  
Adjustments relating to prior years
   
(22,019 )    
—      
3,294      
—      
(18,725 )
Payments/credits relating to sales in current year
   
(237,521 )    
(252,896 )    
—      
(48,834 )    
(539,251 )
Payments/credits relating to sales in prior years
   
(157,622 )    
(26,387 )    
(13,792 )    
(11,601 )    
(209,402 )
Ending balance — December 31, 2022
  $
226,741     $
26,175     $
29,666     $
7,938     $
290,520  
 
(1)
“Contractual Adjustments” include “Medicaid Rebates” and “Medicare Part D” accruals
(2)
“Discounts” include “Chargebacks” and “Product Discounts”
 
Total revenue-related reserves as of December 31, 2024 and 2023, included in our consolidated balance sheets, are summarized as follows:
 
(1)
(2)
(1)
(2)
(1)
(2)

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-12
 
 
Year Ended December 31,
 
(In thousands)
 
2024
   
2023
 
Reduction of accounts receivable
  $
22,031     $
11,510  
Components of accrued sales discounts, allowances and reserves
   
272,452      
263,641  
Components of other long-term liabilities
   
41,944      
39,181  
Total revenue-related reserves
  $
336,427     $
314,332  
Collaborative Arrangements
The Company has entered into collaborative arrangements with pharmaceutical companies including, among others, Janssen Pharmaceuticals, Inc. 
(“Janssen, Inc.”), Janssen Pharmaceutica International, a division of Cilag International AG (“Janssen International”), and Janssen Pharmaceutica N.V. 
(together with Janssen, Inc., Janssen International and their affiliates, “Janssen”) related to INVEGA SUSTENNA®/XEPLION®, INVEGA 
TRINZA®/TREVICTA®, INVEGA HAFYERA®/BYANNLI® (collectively, the “long-acting INVEGA products”) and RISPERDAL CONSTA®, and 
Biogen International GmbH (together with its affiliates, “Biogen”) related to VUMERITY®. Substantially all of the products developed under these 
arrangements are currently being marketed as approved products for which the Company received or receives payments for manufacturing services and/or 
royalties on net product sales.
Manufacturing Revenue 
The Company recognizes manufacturing revenues from the sale of products it manufactures for resale by its licensees. Substantially all of the 
manufacturing revenues are recognized at a point in time when control of the product passes to the licensee. The sales price for certain of the Company’s 
manufacturing revenues is based on the end-market sales price earned by its licensees. As end-market sales generally occur after the Company has recorded 
manufacturing revenue, the Company estimates the sales price for such products based on information supplied to it by the Company’s licensees, its 
historical transaction experience and other third-party data. Differences between actual manufacturing revenues and estimated manufacturing revenues are 
reconciled and adjusted for in the period in which they become known, which is generally within the same quarter. The differences between the Company’s 
actual and estimated manufacturing revenues have not been material to date.
Royalty Revenue
The Company recognizes royalty revenues related to the sale by its licensees of products that incorporate the Company’s technologies. All of the 
Company’s royalties qualify for the sales-and-usage exemption under Topic 606 as (i) such royalties are based strictly on the sales-and-usage by the 
licensee; and (ii) a license of IP is the sole or predominant item to which such royalties relate. Based on this exemption, these royalties are earned in the 
period that the products are sold by the Company’s licensee and the Company has a present right to payment. 
Certain of the Company’s royalty revenues are recognized by the Company based on information supplied to the Company by its licensees and 
require estimates to be made. Differences between actual royalty revenues and estimated royalty revenues are reconciled and adjusted for in the period in 
which they become known, which is generally within the same quarter. The differences between the Company’s actual and estimated royalty revenues have 
not been material to date.
Receivables, net
Receivables, net, include amounts billed and amounts unbilled but currently unconditionally due from customers. The amounts due are stated at 
their net estimated realizable value. The Company’s unbilled receivable balance was $69.5 million and $103.1 million at December 31, 2024 and 2023, 
respectively, and related primarily to royalty revenue. The Company maintains an allowance for doubtful accounts to provide for the estimated amounts of 
receivables that will not be collected. The allowance is based upon an assessment of customer creditworthiness, historical payment experience, the age of 
outstanding receivables and collateral to the extent applicable. The Company’s allowance for doubtful accounts was approximately $0.3 million and $0.2 
million at December 31, 2024 and 2023, respectively.
Contract Assets
Contract assets include unbilled amounts that will result in a sale under certain of the Company’s manufacturing contracts. The amounts included in 
the contract assets table below are classified as “Current assets” in the accompanying consolidated balance sheets, as they relate to manufacturing processes 
that are completed in ten days to eight weeks.

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-13
Contract assets consisted of the following:
 
(In thousands)
 
Contract Assets
 
Contract assets at January 1, 2023
  $
8,929  
Additions
   
13,606  
Transferred to receivables, net
   
(21,829 )
Contract assets at December 31, 2023
  $
706  
Additions
 
 
6,615  
Transferred to receivables, net
 
 
(2,331 )
Contract assets at December 31, 2024
 
$
4,990  
 
Contract Liabilities 
Contract liabilities consist of contractual obligations related to deferred revenue. At December 31, 2024 and 2023, $1.2 million and $2.7 million of 
the contract liabilities, respectively, were classified as “Contract liabilities–short-term” in the accompanying consolidated balance sheets and none and $2.1 
million of the contract liabilities, respectively, were classified as “Other long-term liabilities” in the accompanying consolidated balance sheets. 
Contract liabilities consisted of the following:
 
(In thousands)
 
Contract Liabilities
 
Contract liabilities at January 1, 2023
  $
10,701  
Additions
   
(931 )
Amounts recognized into revenue
   
(4,995 )
Contract liabilities at December 31, 2023
 
$
4,775  
Additions
 
 
34  
Amounts recognized into revenue
 
 
(3,560 )
Contract liabilities at December 31, 2024
 
$
1,249  
 
Foreign Currency
The Company’s functional and reporting currency is the U.S. dollar. Transactions in foreign currencies are recorded at the exchange rate prevailing 
on the date of the transaction. The resulting monetary assets and liabilities are translated into U.S. dollars at exchange rates prevailing on the subsequent 
balance sheet date. Gains and losses as a result of translation adjustments are recorded within “Other income (expense), net” in the accompanying 
consolidated statements of operations and comprehensive income (loss). During the years ended December 31, 2024, 2023 and 2022, the Company 
recorded losses of $0.8 million and $0.5 million and a gain of $0.7 million, respectively, on foreign currency translation.
Concentrations
Financial instruments that potentially subject the Company to concentrations of credit risk are receivables and marketable securities. Billings to 
large pharmaceutical companies and pharmaceutical wholesalers account for the majority of the Company’s receivables, and collateral is not required from 
these customers. To mitigate credit risk, the Company monitors the financial performance and credit-worthiness of its customers. The following represents 
revenue and receivables from the Company’s customers exceeding 10% of the total in each category as of, and for the years ended, December 31, 2024, 
2023 and 2022:
 
 
 
Year Ended December 31,
 
 
 
2024
 
2023
 
2022
 
Customer
 
Receivables
 
Revenue
 
Receivables
 
Revenue
 
Receivables
 
Revenue
 
McKesson
 
36 %
25 %
14 %
14 %
12 %
16 %
Cencora
 
17 %
15 %
16 %
12 %
18 %
14 %
Cardinal Health
 
16 %
19 %
24 %
20 %
24 %
24 %
Janssen
 
14 %
17 %
23 %
31 %
*  
15 %
Biogen
 
*  
11 %
*  
11 %
19 %
13 %
 
*
 
Indicates the revenues or receivables for the customer did not exceed 10% of the Company’s total in each category as of or for the years ended December 
31, 2024, 2023 and 2022, as noted. 
 

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-14
The Company holds its interest-bearing investments with major financial institutions and, in accordance with documented investment policies, the 
Company limits the amount of credit exposure to any one financial institution or corporate issuer. The Company’s investment objectives are, first, to ensure 
liquidity and conservation of capital and, second, to generate investment income.
Geographic Information
Company revenues by geographic location for the years ended December 31, 2024, 2023 and 2022, as determined by the location of the customer, 
are as follows:
 
 
 
Year Ended December 31,
 
(In thousands)
 
2024
   
2023
   
2022
 
Revenue by region:
   
     
     
 
U.S.
  $
1,410,159     $
1,491,939     $
931,991  
Ireland
   
1,294      
1,179      
1,829  
Rest of world
   
146,179      
170,287      
177,975  
The location of the Company’s assets are as follows:
 
 
 
December 31,
 
(In thousands)
 
2024
   
2023
 
Assets by region:
   
     
 
Current assets:
   
     
 
U.S.:
 
    
   
Cash and cash equivalents
  $
70,303     $
317,850  
Investments—short-term
   
203,631      
187,574  
Receivables, net
   
306,259      
218,747  
Other current assets
   
129,332      
143,417  
Ireland:
 
    
   
Cash and cash equivalents
  $
220,843     $
139,619  
Investments—short-term
   
256,891      
128,448  
Receivables, net
   
78,269      
113,730  
Assets held for sale
   
—      
94,260  
Other current assets
   
149,827      
141,861  
Long-term assets:
   
     
 
U.S.:
   
     
 
Property, plant and equipment, net
  $
226,646     $
225,578  
Investments—long-term
   
24,629      
17,957  
Other
   
210,792      
189,335  
Ireland:
   
     
 
Property, plant and equipment, net
  $
918     $
1,365  
Investments—long-term
   
48,519      
21,930  
Intangible assets, net and goodwill
   
83,917      
85,018  
Other
   
44,791      
109,534  
Research and Development Expenses
For each of its R&D programs, the Company incurs both external and internal expenses. External R&D expenses include fees related to clinical and 
preclinical activities performed by contract research organizations, consulting fees and costs related to laboratory services, purchases of drug product 
materials and third-party manufacturing development costs. Internal R&D expenses include employee-related expenses, occupancy costs, depreciation and 
general overhead. The Company tracks external R&D expenses for each of its development programs, however, internal R&D expenses are not tracked by 
individual program as they benefit multiple development programs or the Company’s products or technologies in general.
Selling, General and Administrative Expenses
Selling, general and administrative (“SG&A”) expenses are primarily comprised of employee-related expenses associated with selling and 
marketing, finance, human resources, legal, information technology and other administrative personnel, outside marketing, advertising, financial and legal 
expenses and other general and administrative costs.

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-15
Advertising costs are expensed as incurred. During the years ended December 31, 2024, 2023 and 2022, advertising costs totaled $107.6 million, 
$127.6 million and $41.4 million, respectively.
Share-Based Compensation
The Company’s share-based compensation programs permit grants of awards in the form of stock options and restricted stock unit awards (“RSUs”), 
which vest with the passage of time and/or based on the achievement of certain performance criteria. The Company issues new shares upon the exercise of 
stock options or the vesting of RSUs. Under the terms of the Company’s stock option and incentive plans (the “Plans”), the Company’s employees may, at 
the discretion of the plan administrator, become eligible in certain circumstances set forth in the Plans for accelerated vesting of certain awards granted to 
them under the Plans. In such circumstances, if there are no effective future service requirements for such employees, the remaining fair value of any such 
accelerated awards would be expensed as of the date of acceleration.
Time-Based Stock Options
Except as otherwise provided in the applicable Plan or award certificate, stock option grants to employees expire ten years from the date of grant 
and generally vest in four equal annual installments, commencing on the first anniversary of the date of grant, provided the employee remains continuously 
employed or in a service relationship with the Company during the applicable vesting period. Except as otherwise provided in the applicable Plan or Award 
Certificate (as defined in the 2018 Plan): (i) annual stock option grants to non-employee directors expire ten years from the date of grant and generally vest 
over a one-year period; and (ii) stock option grants to new non-employee directors expire ten years from the date of grant and generally vest over a three-
year period. The estimated fair value of options is recognized over the requisite service period, which is generally the vesting period. Share-based 
compensation expense is based on awards ultimately expected to vest. Forfeitures are estimated based on historical experience at the time of grant and 
revised in subsequent periods if actual forfeitures differ from those estimates.
The fair value of stock option grants is based on estimates as of the date of grant using a Black-Scholes option valuation model. The Company uses 
historical data as the basis for estimating stock option terms and forfeitures. Separate groups of employees that have similar historical stock option exercise 
and forfeiture behavior are considered separately for valuation purposes. The ranges of expected terms disclosed below reflect different expected behavior 
among certain groups of employees. Expected stock volatility factors are based on a weighted average of implied volatilities from traded options of the 
Company’s ordinary shares and historical share price volatility of the Company’s ordinary shares, which is determined based on a review of the weighted 
average of historical weekly price changes of the Company’s ordinary shares. The risk-free interest rate for periods commensurate with the expected term 
of the stock option is based on the U.S. treasury yield curve in effect at the time of grant. The dividend yield on the Company’s ordinary shares is estimated 
to be zero as the Company has not paid dividends and does not expect to pay dividends in the near future. The exercise price of options granted is equal to 
the closing price of the Company’s ordinary shares traded on the Nasdaq Global Select Market on the date of grant.
The fair value of each stock option granted was estimated on the grant date with the following weighted-average assumptions:
 
 
 
Year Ended December 31,
 
 
2024
 
2023
 
2022
Expected option term
 
5 - 7 years
 
5 - 8 years
 
5 - 8 years
Expected stock volatility
 
38 % - 42 %
 
40 % - 44 %
 
43 % - 51 %
Risk-free interest rate
 
3.64 % - 4.60 %
 
3.34 % - 4.75 %
 
1.83 % - 4.26 %
Expected annual dividend yield
 
—
 
—
 
—
 
Time-Based Restricted Stock Unit Awards
Except as otherwise provided in the applicable Plan or award certificate, time-based RSUs awarded to employees generally vest in four equal annual 
installments, commencing on the first anniversary of the date of grant, provided the employee remains continuously employed or in a service relationship 
with the Company during the applicable vesting period. Shares subject to these RSUs are delivered to the employee upon vesting, subject to payment of 
applicable withholding taxes. The fair value of time-based RSUs is equal to the closing price of the Company’s ordinary shares traded on the Nasdaq 
Global Select Market on the date of grant. Compensation expense, including the effect of forfeitures, is recognized over the applicable service period.

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-16
Performance-Based Restricted Stock Unit Awards
Performance-based RSUs awarded to employees vest upon the achievement of certain performance criteria, typically during or following the end of 
a specified performance period. The estimated fair value of these performance-based RSUs are generally based on the closing price of the Company’s 
ordinary shares traded on the Nasdaq Global Select Market on the date of grant, unless the performance-based RSU is also subject to a market condition. In 
that case, the fair value of the performance-based RSU is based on a Monte Carlo simulation model. Compensation expense for performance-based RSUs 
is recognized from the date the Company determines the performance criteria probable of being achieved to the date the award, or relevant portion of the 
award, is expected to vest. Cumulative adjustments are recorded on a quarterly basis to reflect subsequent changes to the estimated outcome of the 
performance criteria until the date that the final outcome of the performance criteria is determined.
Income Taxes
The Company recognizes income taxes under the asset and liability method. Deferred income taxes are recognized for differences between the 
financial reporting and tax bases of assets and liabilities at enacted statutory tax rates in effect for the years in which the differences are expected to reverse. 
The effect on deferred taxes of a change in tax rates is recognized in income in the period that includes the enactment date. In evaluating the Company’s 
ability to recover its deferred tax assets, the Company considers all available positive and negative evidence including its past operating results, the 
existence of cumulative income in the most recent fiscal years, changes in the business in which the Company operates and its forecast of future taxable 
income. In determining future taxable income, the Company is responsible for assumptions utilized including the amount of Irish and non-Irish pre-tax 
operating income, the reversal of temporary differences and the implementation of feasible and prudent tax planning strategies. These assumptions require 
significant judgment about the forecasts of future taxable income and are consistent with the plans and estimates that the Company is using to manage the 
underlying business.
The Company accounts for uncertain tax positions using a more-likely-than-not threshold for recognizing and resolving uncertain tax positions. The 
evaluation of uncertain tax positions is based on factors including, but not limited to, changes in tax law, the measurement of tax positions taken or 
expected to be taken in tax returns, the effective settlement of matters subject to audit, new audit activity and changes in facts or circumstances related to a 
tax position. The Company evaluates its tax position on a quarterly basis. The Company also accrues for potential interest and penalties related to 
unrecognized tax benefits in income tax expense.
Comprehensive Income (Loss)
Comprehensive income (loss) consists of net income (loss) and other comprehensive income (loss). Other comprehensive income (loss) includes 
changes in equity that are excluded from net income (loss), such as unrealized holding gains and losses on available-for-sale investments.
Earnings (Loss) Per Share
Basic earnings (loss) per ordinary share from continuing operations is calculated based upon net income (loss) from continuing operations available 
to holders of ordinary shares divided by the weighted average number of ordinary shares outstanding. Basic loss per ordinary share from discontinued 
operations is calculated based upon net loss from discontinued operations available to holders of ordinary shares, divided by the weighted average number 
of ordinary shares outstanding. For the calculation of diluted earnings (loss) per ordinary share from continuing operations and discontinuing operations, 
the Company utilizes the treasury stock method and adjusts the weighted average number of ordinary shares outstanding for the potential dilutive effect of 
outstanding ordinary share equivalents such as stock options and RSUs.
Segment Information
In November 2023, the FASB issued Accounting Standards Update (“ASU”) 2023-07, Segment Reporting: Improvements to Reportable Segment 
Disclosure (“Topic 280”) to establish standards for reporting information about operating segments. Operating segments are defined as components of an 
enterprise engaging in business activities for which separate financial information is available and regularly reviewed by the chief operating decision maker 
(“CODM”) in deciding how to allocate resources and in assessing performance. The Company has utilized the management approach to determine that the 
Company is managed as one segment on a consolidated basis and is the business of developing, manufacturing and commercializing medicines designed to 
address unmet medical needs of patients in major therapeutic areas. The Company’s CODM, the Chairman and Chief Executive Officer, reviews the 
Company’s operating results on an aggregate basis and manages the Company’s operations as a single operating unit. The CODM measures profitability on 
a reportable segment basis using net income (loss) and utilizes this information in allocating resources and in assessing performance by monitoring budget 
versus actual results. Please refer to Note 18, Segment Reporting, in these “Notes to Consolidated Financial Statements” in this Annual Report for further 
information.

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-17
Employee Benefit Plans
401(k) Plan
The Company maintains a 401(k) retirement savings plan (the “401(k) Plan”), which covers all of its eligible U.S.-based employees. Eligible 
employees may contribute up to 100% of their eligible compensation, subject to certain Internal Revenue Service (“IRS”) limitations. The Company 
matches 100% of employee contributions up to the first 5% of employee pay, up to IRS limits. Employee and Company contributions are fully vested when 
made. During the years ended December 31, 2024, 2023 and 2022, the Company contributed $15.1 million, $15.0 million and $14.4 million, respectively, 
to match employee deferrals under the 401(k) Plan.
Defined Contribution Plan
The Company maintains a defined contribution plan for its Ireland-based employees (the “Defined Contribution Plan”). The Defined Contribution 
Plan provides for eligible employees to contribute up to a maximum of 40%, depending upon their age, of their total taxable earnings subject to an earnings 
cap of €115,000. The Company provides a match of up to 18% of taxable earnings depending upon an individual’s contribution level. During the years 
ended December 31, 2024, 2023 and 2022, the Company contributed $3.4 million, $5.6 million and $5.1 million, respectively, in contributions to the 
Defined Contribution Plan.
New Accounting Pronouncements
From time to time, new accounting pronouncements are issued by the FASB or other standard-setting bodies that are adopted by the Company as of 
the specified effective date. Unless otherwise discussed, the Company believes that the impact of recently issued standards that are not yet effective will not 
have a material impact on its financial position or results of operations upon adoption.
In December 2023, the FASB issued ASU 2023-09, Income Taxes (“Topic 740”): Improvements to Income Tax Disclosures, to enhance the 
transparency and decision usefulness of income tax disclosures in order to provide information to assist key stakeholders in better assessing how the 
Company’s operations and related tax risks and tax planning and operational opportunities affect the Company’s tax rate and prospects for future cash 
flows. This ASU becomes effective for public companies for annual periods beginning after December 15, 2024. Early adoption is permitted for annual 
financial statements that have not yet been issued or made available for issuance. This guidance will be applied on a prospective basis. The Company is 
currently evaluating the impact this ASU will have on its consolidated financial statements and related disclosures.
In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income-Expense Disaggregation Disclosures, to 
improve disclosures about a public business entity’s expenses and address requests from investors for more detailed information about the types of 
expenses (including purchases of inventory, employee compensation, depreciation, amortization and depletion) in commonly-presented expense captions, 
such as cost of sales, selling, general and administrative expenses, and research and development. All disclosure requirements under this guidance are 
required for public business entities and effective for annual periods beginning after December 15, 2026 and interim periods beginning after December 15, 
2027. Early adoption is permitted and the amendments in this guidance will be applied prospectively to financial statements for periods after the effective 
dates. The Company is currently evaluating the impact this ASU will have on its consolidated financial statements and related disclosures.
3. DISCONTINUED OPERATIONS 
Mural Oncology Separation 
In November 2023, the Company completed the Separation. In connection with the Separation, the Company entered into a separation agreement 
with Mural, dated as of November 13, 2023, that, among other things, set forth the Company’s agreements with Mural regarding the principal actions taken 
or to be taken in connection with the Separation, including the Distribution. The separation agreement identified those assets to be transferred to, liabilities 
to be assumed by and contracts to be assigned to Mural, including the operating lease for the office and laboratory space at 852 Winter Street in Waltham, 
Massachusetts, as part of the Separation, and it provided for when and how such transfers, assumptions and assignments were to occur. The purpose of the 
separation agreement was to provide Mural and the Company with those assets necessary to operate their respective businesses and to retain or assume the 
respective liabilities related to those assets. 
Each of Mural and the Company agreed to releases with respect to pre-Distribution claims, and cross-indemnities with respect to post-Distribution 
claims, that are principally designed to place financial responsibility for the obligations and liabilities allocated to Mural under the separation agreement 
with Mural, and financial responsibility for the obligations and liabilities allocated to the Company under the separation agreement with the Company. The 
Company and Mural are also each subject to mutual six-month employee non-solicitation and non-hire restrictions, subject to certain customary exceptions, 
and certain confidentiality restrictions and information sharing obligations. 

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-18
 
The transfer of assets and liabilities to Mural was effected through a contribution in accordance with the separation agreement, as summarized 
below:
 
(In thousands)
 
November 15, 2023
 
ASSETS
 
 
 
Current Assets:
 
   
Cash and cash equivalents
 
$
275,000  
Total current assets
 
 
275,000  
Property, plant and equipment, net
 
 
10,096  
Right-of-use assets
 
 
14,513  
Goodwill
 
 
7,800  
Deferred tax asset
 
 
1,799  
Total assets
 
$
309,208  
LIABILITIES
 
   
Current Liabilities:
 
   
Operating lease liabilities—short-term
 
$
6,036  
Total current liabilities
 
 
6,036  
Operating lease liabilities—long-term
 
 
9,412  
Total liabilities
 
 
15,448  
Net assets transferred to Mural
 
$
293,760  
 
The Company determined that the Separation and related Distribution qualified as tax-free for U.S. federal income tax purposes, which required 
significant judgment by management. In making such determinations, the Company applied U.S. federal tax law to relevant facts and circumstances and 
obtained: (i) a favorable private letter ruling from the IRS; (ii) a tax opinion; and (iii) other external tax advice related to the concluded tax treatment. If the 
Separation and Distribution were to ultimately fail to qualify for tax-free treatment for U.S. federal income tax purposes, the Company and/or its 
shareholders could be subject to significant liabilities, which could have material adverse impacts on the Company’s business, financial condition, results 
of operations and cash flows in future reporting periods. Furthermore, other than taxes recorded on the transfer of intellectual property, the Company 
determined that the Separation and related Distribution qualified as tax-free for Irish tax purposes, which required significant judgment by management. In 
making such determinations, the Company applied Irish tax law to relevant facts and circumstances and obtained: (i) a tax opinion; and (ii) other external 
tax advice related to the concluded tax treatment. If the Separation and Distribution were to ultimately fail to qualify for tax-free treatment for Irish tax 
purposes, the Company and/or its shareholders could be subject to significant liabilities, which could have material adverse impacts on the Company’s 
business, financial condition, results of operations and cash flows in future reporting periods. 
 
In connection with the Separation, the Company also entered into a tax matters agreement with Mural, dated as of November 13, 2023. The tax 
matters agreement governs the Company’s and Mural’s respective rights, responsibilities and obligations with respect to taxes (including taxes arising in 
the ordinary course of business and taxes, if any, incurred as a result of any failure of the Distribution, together with certain related transactions, to qualify 
as tax-free for U.S. federal income tax purposes), tax attributes, the preparation and filing of tax returns, the control of audits and other tax proceedings, and 
assistance and cooperation in respect of tax matters.
 
In connection with the Separation, the Company also entered into the Employee Matters Agreement. The Employee Matters Agreement, as 
amended, governs the Company’s, Mural’s and their respective subsidiaries’ and affiliates’ rights, responsibilities and obligations after the Separation with 
respect to, employment, benefits and compensation matters relating to employees and former employees (and their respective dependents and beneficiaries) 
who are or were associated with the Company, including those who became employees of Mural in connection with the Separation; the allocation of assets 
and liabilities generally relating to employees, employment or service-related matters and employee benefit plans; other human resources, employment and 
employee benefits matters; and the treatment of equity-based awards granted by the Company prior to the Separation. 
Discontinued Operations 
 
The results of the former oncology business and transaction costs related to the Separation have been reflected as “Loss from discontinued 
operations, net of taxes” in the accompanying consolidated statement of operations and comprehensive income (loss) through the Separation Date. Prior 
periods have been recast to reflect this presentation. The transaction costs related to the Separation were $36.0 million during 2023 and $1.4 million during 
2022, and primarily relate to professional fees for separation activities within the finance, tax, legal and information technology functions.

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-19
 
The following table summarizes expenses of the discontinued operations for the years ended December 31, 2024, 2023 and 2022:
 
 
Year Ended December 31,
 
(In thousands)
2024
   
2023
   
2022
 
Operating expenses from discontinued operations
 
     
     
 
Cost of goods manufactured
$
—     $
39     $
40  
Research and development
 
5,790      
116,177      
121,140  
Selling, general and administrative
 
—      
48,587      
14,996  
Total operating expenses from discontinued operations
 
5,790      
164,803      
136,176  
Operating loss from discontinued operations
 
(5,790 )    
(164,803 )    
(136,176 )
Income tax benefit from discontinued operations
 
(722 )    
(1,403 )    
(11,061 )
Net loss and comprehensive loss from discontinued operations
$
(5,068 )   $
(163,400 )   $
(125,115 )
 
There were no assets and $4.5 million of liabilities related to the Separation as of December 31, 2023. All assets were transferred to Mural as of the 
Separation Date. The $4.5 million of liabilities classified as “Liabilities related to discontinued operations” in the accompanying consolidated balance sheet 
as of December 31, 2023 related to bonus amounts accrued for employees that transferred to Mural during 2023 through the Separation Date that were paid 
by the Company in the first quarter of 2024, in accordance with the terms of the employee matters agreement entered into between the Company and 
Mural. 
 
The following table summarizes the significant non-cash items and capital expenditures of the discontinued operations that are included in the 
consolidated statements of cash flows for the years ended December 31, 2023 and 2022:
 
 
   
Year Ended December 31,
 
(In thousands)
 
 
2023
   
2022
 
OPERATING ACTIVITIES:
     
     
 
Depreciation
    $
2,319     $
1,539  
Share-based compensation expense
     
8,188      
6,577  
Right-of-use assets
     
3,803      
5,909  
Operating lease liabilities
     
(3,938 )    
(5,920 )
 
   
    
   
INVESTING ACTIVITIES:
     
     
 
Additions of property, plant and equipment
    $
(1,798 )   $
(5,510 )
 
4. REVENUE FROM CONTRACTS WITH CUSTOMERS 
 
During the years ended December 31, 2024, 2023 and 2022, the Company recorded product sales, net, as follows:
 
 
 
Year Ended December 31,
 
(In thousands)
 
2024
   
2023
   
2022
 
VIVITROL
  $
457,315     $
400,419     $
379,478  
ARISTADA and ARISTADA INITIO
   
346,187      
327,690      
302,052  
LYBALVI
   
280,032      
191,889      
96,022  
Total product sales, net
  $
1,083,534     $
919,998     $
777,552  
 

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-20
During the years ended December 31, 2024, 2023 and 2022, the Company recorded manufacturing and royalty revenues from its collaboration 
arrangements as follows:
 
 
 
Year Ended December 31, 2024
 
(In thousands)
 
Manufacturing
Revenue
   
Royalty
Revenue
   
Total
 
Long-acting INVEGA products
  $
—  
  $
236,386  
  $
236,386  
VUMERITY
 
 
39,292    
 
94,755    
 
134,047  
RISPERDAL CONSTA
 
 
23,172    
 
272    
 
23,444  
Other
 
 
56,962    
 
23,256    
 
80,218  
 
 
$
119,426    
$
354,669    
$
474,095  
 
 
 
Year Ended December 31, 2023
 
(In thousands)
 
Manufacturing
Revenue
   
Royalty
Revenue
   
Total
 
Long-acting INVEGA products
  $
—  
  $
486,101  
  $
486,101  
VUMERITY
 
 
42,886    
 
86,440    
 
129,326  
RISPERDAL CONSTA
 
 
36,123    
 
1,153    
 
37,276  
Other
 
 
63,489    
 
27,196    
 
90,685  
 
 
$
142,498    
$
600,890    
$
743,388  
 
 
 
Year Ended December 31, 2022
 
(In thousands)
 
Manufacturing 
Revenue
   
Royalty Revenue
   
Total
 
Long-acting INVEGA products
  $
—  
  $
115,655  
  $
115,655  
VUMERITY
 
 
32,493    
 
83,003    
 
115,496  
RISPERDAL CONSTA
 
 
42,670    
 
7,243    
 
49,913  
Other
 
 
37,211    
 
13,708    
 
50,919  
 
 
$
112,374    
$
219,609    
$
331,983  
 
(1)
“long-acting INVEGA products”: INVEGA SUSTENNA/XEPLION (paliperidone palmitate), INVEGA TRINZA/TREVICTA (paliperidone palmitate) and 
INVEGA HAFYERA/BYANNLI (paliperidone palmitate).
In November 2021, the Company received notice of partial termination of an exclusive license agreement with Janssen. Under this license 
agreement, the Company provided Janssen with rights to, and know-how, training and technical assistance in respect of, the Company’s small particle 
pharmaceutical compound technology, known as NanoCrystal technology, which was used to develop the long-acting INVEGA products. When the partial 
termination became effective in February 2022, Janssen ceased paying royalties related to sales of INVEGA SUSTENNA, INVEGA TRINZA and 
INVEGA HAFYERA. Accordingly, the Company ceased recognizing royalty revenue related to sales of these products in February 2022. In April 2022, 
the Company commenced binding arbitration proceedings related to, among other things, Janssen’s partial termination of this license agreement and 
Janssen’s royalty and other obligations under the agreement. In May 2023, the arbitral tribunal (the “Tribunal”) in the arbitration proceedings issued a final 
award (the “Final Award”) which concluded the arbitration proceedings. The Final Award provided, among other things, that the Company was due back 
royalties of $195.4 million, inclusive of $8.1 million in late-payment interest related to 2022 U.S. net sales of the long-acting INVEGA products, which 
amount the Company received from Janssen in the second quarter of 2023, and is entitled to 2023 and future royalty revenues from Janssen related to net 
sales of INVEGA SUSTENNA through August 20, 2024, INVEGA TRINZA through the second quarter of 2030 (but no later than May 2030 when the 
license agreement expires) and INVEGA HAFYERA through May 2030 (when the license agreement expires). 
Following issuance of the Final Award, the Company recognized royalty revenues related to the back royalties noted above and resumed 
recognizing royalty revenue related to ongoing U.S. sales of the long-acting INVEGA products. During 2023, the Company recorded $486.1 million in 
royalty revenue from sales of the long-acting INVEGA products, including $195.4 million related to back royalties and associated interest related to net 
sales of the long-acting INVEGA in the U.S. in 2022 and resumed recognizing royalty revenue related to worldwide net sales of the long-acting INVEGA 
products of approximately $290.7 million, as compared to royalty revenue of $115.7 million during 2022. 
In October 2022 and November 2022, an arbitration panel found that the Company must return to Acorda Therapeutics, Inc. (“Acorda”) $16.5 
million (inclusive of prejudgment interest and administrative fees) and $1.8 million (inclusive of prejudgment interest), respectively, previously paid by 
Acorda under a license agreement between the Company and Acorda. These amounts 
(1)
(1)
(1)

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-21
represented a portion of the royalty revenue paid to the Company by Acorda since July 2020 related to AMPYRA. The Company paid Acorda the 
aggregate $18.3 million in the fourth quarter of 2022. In addition, during the three months ended June 30, 2022, the Company had recorded $3.2 million of 
royalty revenue related to AMPYRA as the Company believed that it had met the necessary revenue recognition criteria under Topic 606. However, as a 
result of the arbitration ruling, the Company reversed the $3.2 million as the panel found that the Company was no longer entitled to be paid those 
royalties. During the three months ended September 30, 2022, the Company recorded both the $18.3 million in repayments and the $3.2 million reversal as 
reversals of royalty revenue within “Manufacturing and royalty revenue” in the accompanying consolidated statements of operations and comprehensive 
income (loss). The amounts related to such arbitration ruling were included as part of “Other” within the manufacturing and royalty revenue table above for 
the year ended December 31, 2022. As a result of the arbitration ruling, the Company has no contractual obligation to manufacture and supply AMPYRA 
or contractual right to receive future manufacturing or royalty revenue related to AMPYRA. Refer to Note 19, Commitments and Contingent Liabilities 
within the “Notes to Consolidated Financial Statements” in this Annual Report for information regarding additional legal proceedings related to the 
arbitration with Acorda.
5. INVESTMENTS
Investments consist of the following:
 
 
 
 
   
Gross Unrealized
   
 
 
 
 
 
   
 
   
Losses
   
 
 
 
 
Amortized
   
 
   
Less than
   
Greater than
   
Estimated
 
December 31, 2024
 
Cost
   
Gains
   
One Year
   
One Year
   
Fair Value
 
Short-term investments:
 
     
     
     
     
   
Available-for-sale securities:
 
     
     
     
     
   
U.S. government and agency debt securities
  $
266,506     $
763     $
(58 )   $
(6 )   $
267,205  
Corporate debt securities
   
192,617      
762      
(58 )    
(4 )    
193,317  
 Total short-term investments
   
459,123      
1,525      
(116 )    
(10 )    
460,522  
Long-term investments:
 
     
     
     
     
   
Available-for-sale securities:
 
     
     
     
     
   
U.S. government and agency debt securities
   
48,856      
—      
—      
(179 )    
48,677  
Corporate debt securities
   
24,484      
—      
—      
(158 )    
24,326  
 
   
73,340      
—      
—      
(337 )    
73,003  
Held-to-maturity securities:
 
     
     
     
     
   
Certificates of deposit
   
145      
—      
—      
—      
145  
Total long-term investments
   
73,485      
—      
—      
(337 )    
73,148  
Total investments
  $
532,608     $
1,525     $
(116 )   $
(347 )   $
533,670  
 
 
     
     
     
     
   
December 31, 2023
 
     
     
     
     
   
Short-term investments:
 
     
     
     
     
   
Available-for-sale securities:
 
     
     
     
     
   
U.S. government and agency debt securities
  $
199,708     $
758     $
(36 )   $
(611 )   $
199,819  
Corporate debt securities
   
112,055      
703      
(15 )    
(536 )    
112,207  
Non-U.S. government debt securities
   
4,004      
—      
—      
(8 )    
3,996  
 Total short-term investments
   
315,767      
1,461      
(51 )    
(1,155 )    
316,022  
Long-term investments:
 
     
     
     
     
   
Available-for-sale securities:
 
     
     
     
     
   
U.S. government and agency debt securities
   
19,392      
—      
(27 )    
(315 )    
19,050  
Corporate debt securities
   
19,306      
—      
—      
(289 )    
19,017  
 
   
38,698      
—      
(27 )    
(604 )    
38,067  
Held-to-maturity securities:
 
     
     
     
     
   
Certificates of deposit
   
1,820      
—      
—      
—      
1,820  
Total long-term investments
   
40,518      
—      
(27 )    
(604 )    
39,887  
Total investments
  $
356,285     $
1,461     $
(78 )   $
(1,759 )   $
355,909  
 
At December 31, 2024, the Company reviewed its investment portfolio to assess whether the unrealized losses on its available-for-sale investments 
were temporary. Investments with unrealized losses consisted primarily of corporate debt securities and debt securities issued and backed by U.S. agencies 
and the U.S. government. At December 31, 2024, 77 of the Company’s 320 investment securities were in an unrealized loss position and had an aggregate 
estimated fair value of $112.7 million. Approximately 41% and 59% of the Company’s investment securities at December 31, 2024 were in corporate debt 
securities, with a minimum rating of A2 

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-22
(Moody’s)/A (Standard and Poor’s), and debt securities issued by the U.S. government or its agencies, respectively. The primary reason for the unrealized 
losses in the Company’s investment portfolio is that its investments are fixed-rate securities acquired in a rising interest rate environment. In making the 
determination whether the decline in fair value of these securities was temporary, the Company evaluated whether it intended to sell the security and 
whether it was more likely than not that the Company would be required to sell the security before recovering its amortized cost basis. The Company has 
the intent and ability to hold these investments until recovery, which may be at maturity.
Realized gains and losses on the sales and maturities of investments, which were identified using the specific identification method, were as follows:
 
 
 
Year Ended December 31,
 
(In thousands)
 
2024
   
2023
   
2022
 
Proceeds from the sales and maturities of investments
  $
310,286     $
355,522     $
281,627  
Realized gains
  $
—     $
—     $
—  
Realized losses
  $
—     $
—     $
529  
 
The Company’s available-for-sale and held-to-maturity securities at December 31, 2024 had contractual maturities in the following periods:
 
 
 
Available-for-sale
   
Held-to-maturity
 
 
 
Amortized
   
Estimated
   
Amortized
   
Estimated
 
(In thousands)
 
Cost
   
Fair Value
   
Cost
   
Fair Value
 
Within 1 year
  $
324,897     $
325,566     $
145     $
145  
After 1 year through 5 years
   
207,566      
207,959      
—      
—  
Total
  $
532,463     $
533,525     $
145     $
145  
 
6. FAIR VALUE
The following table presents information about the Company’s assets and liabilities that are measured at fair value on a recurring basis and indicates 
the fair value hierarchy and the valuation techniques the Company utilized to determine such fair value:
 
 
 
December 31,
   
 
   
 
   
 
 
(In thousands)
 
2024
   
Level 1
   
Level 2
   
Level 3
 
Assets:
   
     
     
     
 
Cash equivalents
  $
8,388     $
8,388     $
—     $
—  
U.S. government and agency debt securities
   
315,882      
265,090      
50,792      
—  
Corporate debt securities
   
217,643      
—      
217,643      
—  
Total
  $
541,913     $
273,478     $
268,435     $
—  
 
 
 
December 31,
   
 
   
 
   
 
 
 
 
2023
   
Level 1
   
Level 2
   
Level 3
 
Assets:
   
     
     
     
 
Cash equivalents
  $
34,316     $
34,316     $
—     $
—  
U.S. government and agency debt securities
   
218,869      
181,041      
37,828      
—  
Corporate debt securities
   
131,224      
—      
131,224      
—  
Non-U.S. government debt securities
   
3,996      
—      
3,996      
—  
Total
  $
388,405     $
215,357     $
173,048     $
—  
 
The Company transfers its financial assets and liabilities, measured at fair value on a recurring basis, between the fair value hierarchies at the end of 
each reporting period.
There were no transfers of any securities between levels during the year ended December 31, 2024. At December 31, 2024, the Company had no 
investments with fair values that were determined using Level 3 inputs. 
The Company’s investments in U.S. government and agency debt securities, non-U.S. government agency debt securities and corporate debt 
securities classified as Level 2 within the fair value hierarchy were initially valued at the transaction price and subsequently valued, at the end of each 
reporting period, utilizing market-observable data. The market-observable data included reportable trades, benchmark yields, credit spreads, broker/dealer 
quotes, bids, offers, current spot rates and other industry and economic events. The Company validated the prices developed using the market-observable 
data by obtaining market values from other pricing sources, analyzing pricing data in certain instances and confirming that the relevant markets are active.

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-23
In April 2015, the Company sold its Gainesville, GA manufacturing facility, the related manufacturing and royalty revenue associated with certain 
products manufactured at the facility, and the rights to IV/IM and parenteral forms of Meloxicam to Recro Pharma, Inc. (“Recro”) and Recro Gainesville 
LLC (such transaction the “Gainesville Transaction”). The Gainesville Transaction included in the purchase price contingent consideration tied to low 
double digit royalties on net sales of the IV/IM and parenteral forms of Meloxicam and any other product with the same active ingredient as Meloxicam 
IV/IM that is discovered or identified using certain of the Company’s IP to which Recro was provided a right of use, through license or transfer, pursuant to 
the Gainesville Transaction (such products, the “Meloxicam Products”), and milestone payments upon the achievement of certain regulatory and sales 
milestones related to the Meloxicam Products. 
In November 2019, Recro spun out its acute care segment to Baudax Bio, Inc. (“Baudax”), a publicly-traded pharmaceutical company. As part of 
this transaction, Recro’s obligations to pay certain contingent consideration from the Gainesville Transaction were assigned and/or transferred to Baudax.
In Baudax’s Quarterly Report on Form 10-Q for the period ended September 30, 2022, Baudax continued to include disclosures regarding its ability 
to continue as a going concern, which first appeared in its Annual Report on Form 10-K for the period ended December 31, 2021. In March 2022, Baudax 
reduced its workforce by approximately 80%, which was designed to reduce its operational expenses and conserve its cash resources. In light of Baudax’s 
disclosures and the fact that, as of September 30, 2022, Baudax had only paid $1.2 million of the $6.4 million that was due to the Company in March 2022, 
the Company determined, during the three months ended September 30, 2022, that it was unlikely to collect any further proceeds under this arrangement 
and reduced the fair value of the contingent consideration to zero within “Change in the fair value of contingent consideration” in the accompanying 
consolidated statements of operations and comprehensive income (loss) for the year ended December 31, 2022. In addition, during the three months ended 
September 30, 2022, the Company determined that certain construction in progress related to the manufacture of ANJESO® had no future value and 
recorded a $2.3 million write off within “Other income (expense), net” in the accompanying consolidated statements of operations and comprehensive 
income (loss) for the year ended December 31, 2022. 
In December 2022, Baudax announced that it would discontinue the sale of ANJESO and the U.S. Food and Drug Administration (“FDA”) 
acknowledged the discontinuation of sale of ANJESO via listing in the Orange Book.
 
7. INVENTORY
Inventory consists of the following: 
 
 
 
December 31,
   
December 31,
 
(In thousands)
 
2024
   
2023
 
Raw materials
  $
72,139     $
71,416  
Work in process
   
79,871      
68,843  
Finished goods
   
30,877      
46,147  
Total inventory
  $
182,887     $
186,406  
 
(1)
At December 31, 2024 and 2023, the Company had $22.7 million and $33.9 million, respectively, of finished goods inventory located at its third-party warehouse and shipping 
service provider.
8. PROPERTY, PLANT AND EQUIPMENT 
Property, plant and equipment consists of the following:
 
 
 
December 31,
   
December 31,
 
(In thousands)
 
2024
   
2023 
 
Land
  $
957     $
957  
Building and improvements
   
134,699      
132,735  
Furniture, fixtures and equipment
   
244,113      
237,728  
Leasehold improvements
   
42,416      
39,893  
Construction in progress
   
58,391      
45,791  
Subtotal
   
480,576      
457,104  
Less: accumulated depreciation
   
(253,012 )    
(230,161 )
Total property, plant and equipment, net
  $
227,564     $
226,943  
 
(1)
In connection with the sale of the Athlone Facility, $92.2 million of the Company’s property, plant and equipment was classified as “Assets held for sale” in the accompanying 
consolidated balance sheet at December 31, 2023 and was not included in these amounts.
 
(1)
(1)

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-24
Depreciation expense was $27.4 million, $25.7 million and $26.3 million for the years ended December 31, 2024, 2023 and 2022, respectively. 
Also, during the years ended December 31, 2024, 2023 and 2022, the Company wrote off furniture, fixtures and equipment that had an approximate 
carrying value of $0.5 million, $1.7 million and $0.5 million, respectively, at the time of disposition.
Amounts included as construction in progress in the consolidated balance sheets primarily include capital expenditures at the Company’s 
manufacturing facility in Wilmington, Ohio. The Company continues to evaluate its manufacturing capacity based on expectations of demand for its 
products and will continue to record such amounts within construction in progress until such time as the underlying assets are placed into service. The 
Company continues to periodically evaluate whether facts and circumstances indicate that the carrying value of its long-lived assets to be held and used 
may not be recoverable.
In December 2023, the Company determined that $2.9 million of its construction in progress at its Wilmington, Ohio manufacturing facility had no 
future value and was written off through “cost of goods manufactured and sold” in the accompanying consolidated statements of operations and 
comprehensive income (loss) during the year ended December 31, 2023.
9. INTANGIBLE ASSETS AND GOODWILL
Intangible assets and goodwill consists of the following:
 
 
 
 
 
December 31, 2024
   
December 31, 2023
 
(In thousands)
 
Weighted 
Amortizable 
Life (Years)
 
Gross Carrying 
Amount
   
Accumulated 
Amortization
   
Net Carrying 
Amount
   
Gross Carrying 
Amount
   
Accumulated 
Amortization
   
Net Carrying 
Amount
 
Goodwill
 
 
  $
83,027     $
—     $
83,027     $
83,027     $
—     $
83,027  
Finite-lived intangible assets:
 
 
   
     
     
     
     
     
 
Collaboration agreements
 
12
  $
465,590     $
(465,590 )   $
—     $
465,590     $
(465,590 )   $
—  
Capitalized IP
 
11-13
   
118,160      
(117,270 )    
890      
118,160      
(116,169 )    
1,991  
Total
 
 
  $
583,750     $
(582,860 )   $
890     $
583,750     $
(581,759 )   $
1,991  
In connection with the sale of the Athlone Facility, the Company reviewed Topic 805 and determined that the Athlone Facility constituted a business 
and, accordingly, $2.0 million of the Company’s goodwill was allocated to the Athlone Facility and was classified as “Assets held for sale” in the 
accompanying consolidated balance sheet as of December 31, 2023. 
The Company’s finite-lived intangible assets primarily consisted of collaborative agreements and the NanoCrystal and oral controlled release 
technologies acquired as part of the EDT acquisition. These intangible assets were fully amortized in the year ended December 31, 2024. The Company 
recorded $1.1 million, $35.7 million and $36.4 million of amortization expense related to its finite-lived intangible assets during the years ended December 
31, 2024, 2023 and 2022, respectively.
The Company performed its annual goodwill impairment test as of October 31, 2024. The Company elected to perform a qualitative impairment test 
and determined that based on the weight of all available evidence, the fair value of the reporting unit more-likely-than-not exceeded its carrying value. 
10. LEASES
 
All of the Company’s leases are accounted for as operating leases. The Company leases approximately 231,000 square feet of office and laboratory 
space located at 900 Winter Street in Waltham, Massachusetts (the “900 Winter Street Lease”). The initial term of the lease commenced on January 20, 
2020, expires in 2035 and includes an option to extend the term for an additional ten-year period. 
On November 13, 2023, in connection with the Separation, Alkermes, Inc., a wholly-owned subsidiary of the Company (“Alkermes US”) and Mural 
Oncology, Inc., a wholly-owned subsidiary of Mural (“Mural US”) entered into an assignment and assumption of lease agreement (the “Assignment”), 
pursuant to which Alkermes US assigned to Mural US an operating lease for approximately 180,000 square feet of corporate office space, administrative 
areas and laboratories located at 852 Winter Street in Waltham, Massachusetts (the “852 Winter Street Lease”). Under the terms of the Assignment, Mural 
US assumed all of Alkermes US’ obligations under the 852 Winter Street Lease. In accordance with FASB ASC 842, Leases, as the Company can no 
longer access or direct the use of the asset following the Assignment, the 852 Winter Street Lease no longer meets the definition of a lease for the 
Company. On November 15, 2023, the effective date of the Assignment, the Company reduced its right-of-use asset and lease liability by $14.5 million and 
$15.4 million, respectively in the accompanying consolidated balance sheet. 

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-25
At December 31, 2024 and 2023, the operating leases held by the Company had a weighted average incremental borrowing rate of 4.0% and 4.4%, 
respectively, and a weighted average remaining lease term of 7.2 years and 8.7 years, respectively. During the years ended December 31, 2024, 2023 and 
2022, cash paid for amounts included for the measurement of lease liabilities was $10.1 million, $10.3 million and $27.0 million, respectively. The 
Company recorded operating lease expense of $7.2 million, $10.2 million and $10.7 million for the years ended December 31, 2024, 2023 and 2022, 
respectively.
 
Future lease payments under non-cancelable leases as of December 31, 2024 consisted of the following:
 
 
 
December 31,
 
(In thousands)
 
2024
 
2025
 
 
10,189  
2026
 
 
10,259  
2027
 
 
9,505  
2028
 
 
9,574  
Thereafter
 
 
59,695  
Total operating lease payments
 
$
99,222  
Less: imputed interest
 
 
(23,684 )
Total operating lease liabilities
 
$
75,538  
 
11. ACCOUNTS PAYABLE AND ACCRUED EXPENSES
Accounts payable and accrued expenses consists of the following:
 
 
 
December 31,
   
December 31,
 
(In thousands)
 
2024
   
2023
 
Accounts payable
  $
45,630     $
65,649  
Accrued compensation
   
70,960      
83,107  
Accrued other
   
68,742      
91,805  
Total accounts payable and accrued expenses
  $
185,332     $
240,561  
 
A summary of the Company’s current provision for sales discounts, allowances and reserves is as follows:
 
 
 
December 31,
   
December 31,
 
(In thousands)
 
2024
   
2023
 
Medicaid rebates
  $
202,044     $
213,845  
Product discounts
   
19,351      
15,121  
Medicare Part D
   
26,933      
20,569  
Other
   
24,124      
14,106  
Total accrued sales discounts, allowances and reserves
  $
272,452     $
263,641  
Included in accounts payable was approximately $11.4 million and $34.5 million of amounts payable related to state Medicaid rebates as of 
December 31, 2024 and 2023, respectively.
 
12. LONG-TERM DEBT
In December 2024, the Company prepaid in full all previously outstanding term loans (the “Former Term Loans”) under the Former Credit 
Agreement without penalty, through paying off the remaining principal amount due of $289.5 million. The Company accounted for such prepayment as a 
debt extinguishment and recorded a loss of approximately $0.8 million within “Other income (expense), net” in the accompanying consolidated statements 
of operations and comprehensive income (loss) for the year ended December 31, 2024.
The Former Term Loans bore interest at the Secured Overnight Financing Rate (“SOFR”) plus a credit spread adjustment applicable to the interest 
period and an applicable margin of 2.50% with a floor of 0.5%. As of December 31, 2024 and 2023, long-term debt consisted of the following:
 
 
 
December 31,
   
December 31,
 
(In thousands)
 
2024
   
2023
 
Former Term Loans (due March 12, 2026)
  $
—     $
290,730  
Less: current portion
   
—      
(3,000 )
Long-term debt
  $
—     $
287,730  
 

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-26
 
13. EARNINGS (LOSS) PER SHARE
Basic earnings (loss) per ordinary share from continuing operations is calculated based upon net income (loss) from continuing operations available 
to holders of ordinary shares divided by the weighted average number of ordinary shares outstanding. Basic loss per ordinary share from discontinued 
operations is calculated based upon net loss from discontinued operations available to holders of ordinary shares, divided by the weighted average number 
of ordinary shares outstanding. For the calculation of diluted earnings (loss) per ordinary share from continuing operations and discontinuing operations, 
the Company utilizes the treasury stock method and adjusts the weighted average number of ordinary shares outstanding for the potential dilutive effect of 
outstanding ordinary share equivalents such as stock options and RSUs. 
 
 
 
Year Ended December 31,
 
(In thousands)
 
2024
 
 
2023
 
 
2022 
 
Numerator:
   
   
 
   
 
 
Net income (loss) from continuing operations
  $
372,138    
$
519,157    
$
(33,152 )
Net loss from discontinued operations
   
(5,068 )  
 
(163,400 )  
 
(125,115 )
Net income (loss)
  $
367,070  
  $
355,757  
  $
(158,267 )
Denominator:
   
   
 
   
 
 
Weighted average number of ordinary shares outstanding
   
165,392  
   
166,223  
   
163,742  
Effect of dilutive securities:
   
   
 
   
 
 
Stock options
   
1,377  
   
1,093  
   
—  
Restricted stock unit awards
   
2,429  
   
2,414  
   
—  
Dilutive ordinary share equivalents
   
3,806  
   
3,507  
   
—  
Shares used in calculating diluted earnings (loss) per ordinary share
   
169,198    
 
169,730    
 
163,742  
 
(1)
Prior period amounts have been retrospectively adjusted to reflect the effects of the Separation.
The following potential ordinary share equivalents were not included in the net income (loss) per share calculation because the effect would have 
been anti-dilutive:
 
 
Year Ended December 31,
 
(In thousands)
2024
   
2023
   
2022 
 
Stock options
 
11,517      
12,422      
12,777  
Restricted stock unit awards
 
2,391      
2,378      
5,040  
Total
 
13,908      
14,800      
17,817  
 
(1)
Prior period amounts have been retrospectively adjusted to reflect the effects of the Separation.
 
14. SHAREHOLDERS’ EQUITY
Share Repurchase Program
In February 2024, the Company’s board of directors approved a share repurchase program authorizing the Company to repurchase ordinary shares 
of the Company in an aggregate amount of up to $400.0 million (exclusive of any fees, commissions or other expenses related to such repurchases) from 
time to time on the open market (the “Repurchase Program”). The specific timing and amounts of repurchases under the Repurchase Program will depend 
on a variety of factors, including but not limited to ongoing assessments of the Company’s needs, alternative investment opportunities, the market price of 
the Company’s ordinary shares and general market conditions. The Repurchase Program has no set expiration date and may be suspended or discontinued 
at any time. During the year ended December 31, 2024, the Company repurchased approximately 7.9 million of its ordinary shares under the Repurchase 
Program at an average price of $25.33 per share, resulting in a total cost, exclusive of any fees, commissions or other expenses related to such repurchase of 
$200.0 million. All ordinary shares repurchased were returned to treasury. As of December 31, 2024, the remaining amount authorized under the 
Repurchase Program was $200.0 million.
 
(1)
(1)

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-27
15. SHARE-BASED COMPENSATION
Share-Based Compensation Expense
The following table presents share-based compensation expense from continuing and discontinued operations included in the Company’s 
consolidated statements of operations and comprehensive income (loss):
 
 
 
Year Ended December 31,
 
(In thousands)
 
2024
   
2023
   
2022
 
Cost of goods manufactured and sold
  $
5,798     $
11,353     $
10,284  
Research and development
   
28,085      
25,753      
23,289  
Selling, general and administrative
   
62,754      
55,611      
54,104  
Share-based compensation expense from continuing operations
   
96,637      
92,717      
87,677  
Cost of goods manufactured and sold
   
—      
—      
—  
Research and development
   
—      
3,255      
4,652  
Selling, general and administrative
   
—      
4,933      
1,925  
Share-based compensation expense from discontinued operations
   
—      
8,188      
6,577  
Total share-based compensation expense
  $
96,637     $
100,905     $
94,254  
 
During the years ended December 31, 2024, 2023 and 2022, $3.1 million, $3.2 million and $3.3 million, respectively, of share-based compensation 
expense was capitalized and recorded as “Inventory” in the accompanying consolidated balance sheets.
Share-Based Compensation Plans
The Company has one share-based compensation plan pursuant to which awards are currently being made: the 2018 Stock Option and Incentive 
Plan, as amended (the “2018 Plan”). The Company has two share-based compensation plans pursuant to which outstanding awards have been made, but 
from which no further awards can or will be made: the Alkermes plc Amended and Restated 2008 Stock Option and Incentive Plan, as amended, (the “2008 
Plan”) and the Alkermes plc 2011 Stock Option and Incentive Plan, as amended (the “2011 Plan,” and together with the 2018 Plan and the 2008 Plan, the 
“the Alkermes Stock Option and Incentive Plans”). Effective May 20, 2020, the 2018 Plan was amended such that any shares underlying any outstanding 
awards granted under the 2011 Plan or the 2008 Plan that are forfeited, canceled, repurchased or otherwise terminated (other than by exercise) from and 
after such date will become available for issuance pursuant to the 2018 Plan, notwithstanding anything to the contrary in the terms of the 2011 Plan or the 
2008 Plan.
The 2018 Plan allows for the issuance of non-qualified and incentive stock options, restricted stock, restricted stock unit awards, cash-based awards 
and performance shares to employees, officers and directors of, and consultants to, the Company in such amounts and with such terms and conditions as 
may be determined by the compensation committee of the Company’s board of directors, subject to the provisions of the 2018 Plan, as applicable.
On May 31, 2024, the Company’s shareholders approved an amended version of the then-current version of the 2018 Plan that served to, among 
other things, increase the number of ordinary shares authorized for issuance thereunder by 6.3 million. At December 31, 2024, there were 17.9 million 
ordinary shares available for issuance in the aggregate under the 2018 Plan. The 2018 Plan provides that awards other than stock options will be counted 
against the total number of shares available under the plan in a 1.8-to-1 ratio.
Stock Options
A summary of stock option activity is presented in the following table:
 
 
 
Number of
   
Weighted Average
 
 
 
Shares
   
Exercise Price
 
Outstanding, January 1, 2024
   
18,139,903     $
32.28  
Granted
   
2,615,357     $
29.48  
Exercised
   
(1,328,189 )   $
20.76  
Expired
   
(1,427,409 )   $
46.72  
Forfeited
   
(521,043 )   $
26.65  
Outstanding, December 31, 2024
   
17,478,619     $
31.73  
Exercisable, December 31, 2024
   
10,979,663     $
34.53  
 

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-28
 
The weighted average grant date fair value of stock options granted during the years ended December 31, 2024, 2023 and 2022 was $14.08, $13.74 
and $12.62, respectively. The aggregate intrinsic value of stock options exercised during the years ended December 31, 2024, 2023 and 2022 was $10.9 
million, $6.0 million and $11.6 million, respectively.
At December 31, 2024, there were 6.3 million stock options expected to vest, with a weighted average exercise price of $26.91 per share, a weighted 
average contractual remaining life of 7.9 years and an aggregate intrinsic value of $15.4 million. At December 31, 2024, the aggregate intrinsic value of 
stock options exercisable was $38.5 million with a weighted average remaining contractual term of 4.4 years. The number of stock options expected to vest 
was determined by applying the pre-vesting forfeiture rate to the total number of outstanding options. The intrinsic value of a stock option is the amount by 
which the market value of the underlying shares exceeds the exercise price of the stock option.
At December 31, 2024, there was $32.3 million of unrecognized share-based compensation expense related to unvested stock options, which is 
expected to be recognized over a weighted average period of 1.9 years.
Time-Based Restricted Stock Unit Awards
A summary of time-based RSU activity is presented in the following table:
 
 
 
 
   
Weighted Average
 
 
 
Number of

Shares
   
Grant Date

Fair Value
 
Unvested, January 1, 2024
   
5,657,578     $
24.18  
Granted
   
2,260,345     $
29.51  
Forfeited
   
(775,415 )   $
26.43  
Vested
   
(2,237,302 )   $
23.05  
Unvested, December 31, 2024
   
4,905,206     $
26.80  
The weighted average grant date fair values of time-vesting RSUs granted during the years ended December 31, 2024, 2023 and 2022 were $29.51, 
$27.65 and $25.27, respectively. The total fair value of time-vesting RSUs that vested during the years ended December 31, 2024, 2023 and 2022, was 
$51.6 million, $63.0 million and $54.3 million, respectively.
At December 31, 2024, there was $53.4 million of total unrecognized share-based compensation expense related to unvested time-vesting RSUs, 
which will be recognized over a weighted average remaining contractual term of 1.9 years.
Performance-Based Restricted Stock Unit Awards
In February 2024, 2023 and 2022, the compensation committee of the Company’s board of directors approved the Company’s  long-term incentive 
plans, pursuant to which awards of performance-based RSUs are granted to employees of the Company at the Senior Vice President level and above, in 
each case subject to vesting based on the achievement of certain financial, commercial and/or R&D performance criteria to be assessed over a performance 
period of three years from the date of the grant, and subject, at the end of such three-year performance period, to upward or downward adjustment based on 
a market condition tied to relative share price performance over the three-year performance period. 
A summary of performance-based RSU activity is presented in the following table:
 
 
 
 
   
Weighted Average
 
 
 
Number of

Shares
   
Grant Date

Fair Value
 
Unvested, January 1, 2024
   
1,546,357  
  $
27.95  
Granted
   
498,120  
  $
32.46  
Forfeited
   
(172,576 )   $
25.88  
Vested
   
(536,243 )   $
22.21  
Unvested, December 31, 2024
   
1,335,658  
  $
32.13  
The weighted average grant date fair values of performance-based RSUs granted during the years ended December 31, 2024, 2023 and 2022 were 
$32.46, $29.91 and $30.73, respectively. The total fair value of performance-based RSUs that vested during the years ended December 31, 2024, 2023 and 
2022 were $10.1 million, $5.9 million and none, respectively. At December 31, 2024, there 

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-29
was $3.0 million of unrecognized share-based compensation expense related to unvested performance-based RSUs which would be recognized in 
accordance with the terms of the awards when the Company deems it probable that the performance criteria will be met. 
During the year ended December 31, 2024, the Company recognized share-based compensation expense related to certain performance-based RSUs 
that were granted during 2021. As of December 31, 2023, the financial performance criteria for these awards were deemed not probable of being achieved; 
however, in February 2024, the compensation committee of the Company’s board of directors determined that the Company partially achieved the financial 
performance criteria. This was considered a modification in accordance with FASB ASC 718, Compensation—Stock Compensation and resulted in a 
modification charge of approximately $6.8 million. In February 2024, the compensation committee of the Company’s board of directors also determined 
that the Company achieved the pipeline performance criteria for these awards, resulting in a $2.6 million incremental share-based compensation expense, 
as it was deemed such pipeline performance criteria had been met. The share-based compensation expense related to these achievements was recognized in 
2024. 
 
16. COLLABORATIVE ARRANGEMENTS
The Company has entered into several collaborative arrangements to develop and commercialize products and, in connection with such 
arrangements, to access technologies, financial, marketing, manufacturing and other resources. Refer to the “Patents and Proprietary Rights” section in 
“Item 1— Business” of this Annual Report for information with respect to IP protection for these products. The collaboration revenue the Company has 
earned in the years ended December 31, 2024, 2023 and 2022 is summarized in Note 4, Revenue from Contracts with Customers within the notes to the 
consolidated financial statements in this Annual Report. 
The Company’s significant collaborative arrangements are described below:
Janssen
INVEGA SUSTENNA/XEPLION, INVEGA TRINZA/TREVICTA and INVEGA HAFYERA/BYANNLI
Under an exclusive license agreement with Janssen, the Company provided Janssen with rights to, and know-how, training and technical assistance 
in respect of, the Company’s small particle pharmaceutical compound technology, known as NanoCrystal technology, which was used to develop the long-
acting INVEGA products, and the Company received milestone payments from Janssen upon the achievement of certain development goals from Janssen; 
there are no further milestones to be earned under this agreement. The agreement also provides for tiered royalty payments, which consist of a patent 
royalty and a know-how royalty, both of which are determined on a country-by-country basis. The patent royalty, which equals 1.5% of net sales, is 
payable in each country until the expiration of the last of the patents with valid claims applicable to the product in such country. The know-how royalty is a 
tiered royalty of 3.5%, 5.5% and 7.5% on aggregate worldwide net sales of below $250 million, between $250 million and $500 million, and greater than 
$500 million, respectively. The know-how royalty rate resets to 3.5% at the beginning of each calendar year and is payable until 15 years from first 
commercial sale of a product in each individual country, subject to expiry of the agreement. These royalty payments may be reduced in any country based 
on patent litigation or on competing products achieving certain minimum sales thresholds. The license agreement, unless earlier terminated, terminates 
upon the expiration of the last of the patents subject to the agreement. After expiration, Janssen retains a non-exclusive, royalty-free license to develop, 
manufacture and commercialize the products, subject to certain surviving obligations. Janssen may terminate the license agreement in whole or in part upon 
three months’ notice to the Company. The Company and Janssen have the right to terminate the agreement upon a material breach of the other party, which 
is not cured within a certain time period, or upon the other party’s bankruptcy or insolvency.
In November 2021, the Company received notice from Janssen of partial termination of the license agreement, following which Janssen ceased 
paying the Company royalties related to U.S. sales of INVEGA SUSTENNA, INVEGA TRINZA and INVEGA HAFYERA. In April 2022, the Company 
commenced binding arbitration proceedings related to, among other things, Janssen’s partial termination of this license agreement and Janssen’s royalty 
and other obligations under the agreement. In May 2023, the Tribunal in the arbitration proceedings issued a Final Award that served to reinstate the 
Janssen royalties and required payment by Janssen of back royalties and interest for amounts owed but not yet paid since the effective date of the partial 
termination. The Final Award also provided, among other things, that the Company was entitled to royalty revenues from Janssen related to net sales of 
INVEGA SUSTENNA through August 20, 2024, INVEGA TRINZA through the second quarter of 2030 (but no later than May 2030 when the license 
agreement expires) and INVEGA HAFYERA through May 2030 (when the license agreement expires).
RISPERDAL CONSTA
Under a product development agreement, the Company collaborated with Janssen on the development of RISPERDAL CONSTA. Under the 
development agreement, Janssen provided funding to the Company for the development of RISPERDAL CONSTA and Janssen is responsible for securing 
all necessary regulatory approvals for the product.

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-30
Under two license agreements, the Company granted Janssen and an affiliate of Janssen exclusive worldwide licenses to use and sell RISPERDAL 
CONSTA. Under its license agreements with Janssen, the Company receives royalty payments equal to 2.5% of Janssen’s end-market net sales of 
RISPERDAL CONSTA in each country where the license is in effect based on the quarter when the product is sold by Janssen. This royalty may be 
reduced in any country based on lack of patent coverage and significant competition from generic versions of the product. Janssen can terminate the license 
agreements upon 30 days’ prior written notice to the Company. Either party may terminate the license agreements by written notice following a breach 
which continues for 90 days after the delivery of written notice thereof or upon the other party’s insolvency. The licenses granted to Janssen expire on a 
country-by-country basis upon the later of: (i) the expiration of the last patent claiming the product in such country; or (ii) 15 years after the date of the first 
commercial sale of the product in such country, provided that in no event will the license granted to Janssen expire later than the twentieth anniversary of 
the first commercial sale of the product in each such country, with the exception of Canada, France, Germany, Italy, Japan, Spain and the United Kingdom, 
in each case where the fifteen-year minimum shall pertain regardless. After expiration, Janssen retains a non-exclusive, royalty-free license to manufacture, 
use and sell RISPERDAL CONSTA. 
The Company exclusively manufactures RISPERDAL CONSTA at its Wilmington, Ohio facility for commercial sale. Under its manufacturing and 
supply agreement with Janssen, the Company records manufacturing revenues when product is fully manufactured and approved for shipment by both 
Janssen and the Company. Revenue is based on a percentage of Janssen’s net unit sales price for RISPERDAL CONSTA for the applicable calendar year. 
This percentage is determined based on Janssen’s unit demand for such calendar year and varies based on the volume of units shipped, with a minimum 
manufacturing fee of 7.5%. Either party may terminate the manufacturing and supply agreement upon a material breach by the other party, which is not 
resolved within 60 days after receipt of a written notice specifying the material breach or upon written notice in the event of the other party’s insolvency or 
bankruptcy. Janssen may terminate the agreement upon six months’ written notice to the Company. In the event that Janssen terminates the manufacturing 
and supply agreement without terminating the license agreements, the royalty rate payable to the Company on Janssen’s net sales of RISPERDAL 
CONSTA would increase from 2.5% to 5.0%.
Biogen
Under a license and collaboration agreement with Biogen, the Company granted Biogen a worldwide, exclusive, sublicensable license to develop, 
manufacture and commercialize VUMERITY and other products covered by patents licensed to Biogen under the agreement. 
Under this license and collaboration agreement, the Company received an upfront cash payment and milestone payments related to the achievement 
of certain milestones. The Company is also eligible to receive additional payments upon achievement of certain milestones, including milestones relating to 
the first two products, other than VUMERITY, covered by patents licensed to Biogen under the license and collaboration agreement.
In addition, the Company receives a 15% royalty on worldwide net sales of VUMERITY, subject to increases for VUMERITY manufactured and/or 
packaged by Biogen or its designees. The Company is also entitled to receive royalties on net sales of products other than VUMERITY covered by patents 
licensed to Biogen under the license and collaboration agreement, at tiered royalty rates calculated as percentages of net sales ranging from high-single 
digits to sub-teen double digits. All royalties are payable on a product-by-product and country-by-country basis until the later of (i) the last-to-expire patent 
right covering the applicable product in the applicable country and (ii) a specified period of time from the first commercial sale of the applicable product in 
the applicable country. Royalties for all products are subject to customary reductions, as set forth in the license and collaboration agreement.
Following FDA approval of VUMERITY and, except for the manufacturing responsibilities discussed below, Biogen is now responsible for all 
development and commercialization activities for VUMERITY and all other products covered by the patents that we licensed to Biogen.
Under the license and collaboration agreement, Biogen appointed the Company as the toll manufacturer of clinical and commercial supplies of 
VUMERITY, subject to Biogen’s right to manufacture or have manufactured commercial supplies as a back-up manufacturer. In October 2019, the 
Company entered into a commercial supply agreement with Biogen for the commercial supply of VUMERITY, an amendment to such commercial supply 
agreement and an amendment to the license and collaboration agreement with Biogen, pursuant to which Biogen has conducted a technology transfer and, 
following an agreed transition period, has elected to assume responsibility for the manufacture (itself or through a designee) of clinical and commercial 
supplies of VUMERITY in exchange for an increase in the royalty rate to be paid by Biogen to the Company on net sales of product that is manufactured 
by Biogen or its designee. In May 2024, the Company completed the sale of the Athlone Facility where VUMERITY is manufactured. In connection with 
the sale of the Athlone Facility, the Company has entered into a subcontracting arrangement with the purchaser of the Athlone Facility for the manufacture 
of VUMERITY through the manufacturing transition period, which may continue through the end of 2025. 

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-31
Unless earlier terminated, the license and collaboration agreement will remain in effect until the expiry of all royalty obligations. Biogen has the 
right to terminate the license and collaboration agreement at will, on a product-by-product basis or in its entirety upon 180 days’ prior notice to the 
Company. Either party has the right to terminate the license and collaboration agreement following any governmental prohibition of the transactions 
effected by the agreement, or in connection with an insolvency event involving the other party. Upon termination of the license and collaboration 
agreement by either party, then, at the Company’s request, the VUMERITY program will revert to the Company.
17. INCOME TAXES
The Company’s provision (benefit) for income taxes from continuing operations consists of the following:
 
 
 
Year Ended December 31,
 
(In thousands)
 
2024
   
2023
   
2022 
 
Current income tax provision (benefit):
   
     
     
 
U.S. federal
  $
25,640     $
(981 )   $
11,169  
U.S. state
   
4,259      
722      
4,401  
Ireland
   
1,192      
—      
—  
Deferred income tax provision (benefit):
   
     
     
 
U.S. federal
   
(19,870 )    
10,192      
(10,536 )
U.S. state
   
(1,392 )    
(507 )    
(3,010 )
Ireland
   
61,783      
(107,064 )    
—  
Total tax provision (benefit)
  $
71,612     $
(97,638 )   $
2,024  
 
(1)
Prior period amounts have been retrospectively adjusted to reflect the effects of the Separation.
The income tax provision in 2024 was primarily due to taxes on income earned in Ireland. The income tax benefit in 2023 was primarily due to the 
partial release of the valuation allowance maintained against certain Irish deferred tax assets, partially offset by taxes on income earned in the U.S. and 
Ireland. The income tax expense in 2022 was primarily due to taxes on income earned in the U.S.
In December 2022, the EU implemented a new corporate minimum tax rate of 15% on companies with consolidated annual revenue of at least 
€750.0 million, which was transposed into Irish law effective as of January 1, 2024.  The Company has determined that this new minimum tax had no 
material impact for the year ended December 31, 2024.
The income tax benefit associated with the Company’s former oncology business, and the tax impact of the Separation, are discussed in further 
detail in Note 3, Discontinued Operations, in these “Notes to Consolidated Financial Statements” in this Annual Report. The tax benefits included within 
discontinued operations were $0.7 million, $1.4 million, and $11.1 million for the years ended December 31, 2024, 2023, and 2022, respectively.
No provision for income tax has been provided on undistributed earnings of the Company’s foreign subsidiaries because such earnings are 
indefinitely reinvested in the foreign operations. Cumulative unremitted earnings of U.S. subsidiaries totaled approximately $933.5 million at December 
31, 2024. In the event of a repatriation of those earnings in the form of dividends or otherwise, the Company may be liable for income taxes, subject to 
adjustment, if any, for foreign tax credits and foreign withholding taxes payable to foreign tax authorities. The Company estimates that approximately 
$72.0 million of income taxes would be payable on the repatriation of the unremitted earnings to Ireland.
The distribution of the Company’s income (loss) before the provision (benefit) for income taxes by geographical area consists of the following:
 
 
 
Year Ended December 31,
 
(In thousands)
 
2024
   
2023
   
2022 
 
Ireland
 
$
440,674     $
411,767     $
(32,198 )
U.S.
 
 
3,076      
9,752      
1,070  
Income (loss) from continuing operations before provision (benefit) for income taxes
 
$
443,750     $
421,519     $
(31,128 )
 
(1)
Prior period amounts have been retrospectively adjusted to reflect the effects of the Separation.
 
(1)
(1)

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-32
The components of the Company’s net deferred tax assets consist of the following:
 
 
 
December 31,
   
December 31,
 
(In thousands)
 
2024
   
2023
 
Deferred tax assets:
   
     
 
Net operating loss carryforwards
  $
80,209     $
195,658  
Research and development expenses
   
71,167      
49,206  
Accrued expenses and reserves
   
41,189      
37,367  
Operating lease liabilities
   
17,537      
18,716  
Share-based compensation
   
33,773      
37,727  
Tax credits
   
26,882      
27,116  
Other
   
3,695      
5,582  
Less: valuation allowance
   
(79,727 )    
(129,296 )
Total deferred tax assets
   
194,725      
242,076  
Deferred tax liabilities:
   
     
 
Property, plant and equipment
   
(21,917 )    
(26,271 )
Right-of-use assets
   
(16,337 )    
(17,748 )
Other
   
(1,940 )    
(2,716 )
Total deferred tax liabilities
   
(40,194 )    
(46,735 )
Net deferred tax assets
  $
154,531     $
195,341  
 
The activity in the valuation allowance associated with deferred taxes consists of the following:
 
(In thousands)
 
Balance at 
Beginning of 
Period 
   
(Additions) / 
Reductions 
   
Balance at End of 
Period 
 
Deferred tax asset valuation allowance for the year ended December 31, 2022
  $
(249,112 )   $
(22,405 )   $
(271,517 )
Deferred tax asset valuation allowance for the year ended December 31, 2023
  $
(271,517 )   $
142,221     $
(129,296 )
Deferred tax asset valuation allowance for the year ended December 31, 2024
  $
(129,296 )   $
49,569     $
(79,727 )
 
(1)
Inclusive of continuing and discontinued operations for the periods prior to the Separation in November 2023.
(2)
(Additions) reductions represent continuing and discontinued operations for the periods prior to the Separation in November 2023. The reductions during the year ended December 
31, 2024 primarily relate to the abandonment of certain Irish NOLs following the sale of the Athlone Facility to Novo. These NOLs were transferred from Elan Corporation, plc as 
part of the combination of the drug technology business of Elan Corporation, plc with the business of Alkermes, Inc. A number of restrictions applied to these NOLs thereby 
restricting the Company’s ability to utilize such NOLs. Following the sale of the Athlone Facility, the Company believes that its ability to utilize these NOLs is remote. The 
reduction during the year ended December 31, 2023 primarily relates to the partial release of the valuation allowance maintained by the Company against certain Irish net deferred 
tax assets. The additions in 2022 relate primarily to Irish NOLs.
The Company regularly assesses the need for a valuation allowance against its deferred tax assets. In making such assessment, the Company 
considers both positive and negative evidence related to the likelihood of realization of the deferred tax assets to determine, based on the weight of 
available evidence, whether it is more-likely-than-not that some or all of the deferred tax assets will not be realized. At December 31, 2024, the Company 
maintained a valuation allowance of $29.6 million against certain U.S. state deferred tax assets and $50.1 million against certain Irish deferred tax assets, as 
the Company has determined that it is more-likely-than-not that these deferred tax assets will not be realized and some may be abandoned.
If the Company incurs losses in the U.S. or in Ireland in the future, or fails to achieve sufficient profitability in a timely manner, the evaluation of 
the recoverability of the deferred tax assets could change and a valuation allowance against such deferred tax assets may be required in part or in whole. 
The Company will continue to monitor the need for a valuation allowance against its deferred tax assets on a quarterly basis. 
As of December 31, 2024, the Company had $393.9 million of Irish NOL carryforwards, $14.1 million of U.S. federal NOL carryforwards, $43.2 
million of state NOL carryforwards and $34.0 million of state tax credits which will either expire on various dates through 2039 or can be carried forward 
indefinitely. These loss and credit carryforwards are available to reduce certain future Irish and foreign taxable income and tax. These loss and credit 
carryforwards are subject to review and possible adjustment by the appropriate taxing authorities and may be subject to limitations based upon changes in 
the ownership of the Company’s ordinary shares. Included within these loss and credit carryforwards are $14.1 million of U.S. federal NOL carryforwards 
and $5.8 million of state NOL carryforwards, acquired as part of the acquisition of Rodin Therapeutics, Inc. in November 2019, each of which are subject 
to a $0.5 million annual limitation.
(1)
(2)
(1)

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-33
A reconciliation of the Company’s statutory tax rate to its effective tax rate is as follows:
 
 
 
Year Ended December 31,
   
(In thousands, except percentage amounts)
 
2024
   
 
2023
   
 
2022 
   
Statutory tax rate
   
12.5   %    
12.5   %    
12.5   %
 
 
    
 
    
 
    
Income (loss) from continuing operations before income taxes at statutory rate
  $
55,469    
  $
52,690    
  $
(3,891 )  
 
   
   
   
   
   
   
Share-based compensation
   
5,607    
   
4,177    
   
4,347    
Foreign rate differential
   
4,844    
   
4,701    
   
521    
Change in valuation allowance
   
(49,517 )  
   
(142,424 )  
   
1,102    
Intercompany amounts
   
708    
   
(16,551 )  
   
(1,694 )  
Irish rate differential
   
5,798    
   
235    
   
4,926    
Uncertain tax positions
   
(667 )  
   
(234 )  
   
602    
Non-deductible lobbying expenses
   
767    
   
705    
   
775    
U.S. state income taxes, net of U.S. federal benefit
   
2,802    
   
347    
   
1,272    
Foreign derived intangible income
   
(281 )  
   
—    
   
(4,530 )  
R&D credit
   
(7,815 )  
   
(2,823 )  
   
(2,531 )  
Abandonment of NOLs
   
49,897    
   
—    
   
—    
Other permanent items
   
4,000    
   
1,539    
   
1,125    
Income tax provision (benefit)
  $
71,612    
  $
(97,638 )  
  $
2,024    
 
   
   
   
   
   
   
Effective tax rate
   
16.1   %    
(23.2 ) %    
(6.5 ) %
 
(1)
Prior period amounts have been retrospectively adjusted to reflect the effects of the Separation.
(2)
Represents income or losses of U.S. subsidiaries, subject to tax at a rate other than the Irish statutory rate.
(3)
Intercompany amounts include cross-territory eliminations, the pre-tax effect of which has been eliminated in arriving at the Company's consolidated income (loss) before taxes 
from continuing operations. In 2023, this included a tax benefit of $15.7 million related to the intercompany transfer of inventory that was owned by the Company at December 31, 
2023. 
(4)
Represents income or losses of Irish companies subject to tax at a rate other than the Irish statutory rate.
(5)
Represents the tax effect of the abandonment of Irish NOLs following the sale of the Athlone Facility to Novo.
(6)
Other permanent items include, but are not limited to, non-deductible meals and entertainment expenses and non-deductible compensation of senior officers of the Company. For 
the year ended December 31, 2024, permanent items also included amounts relating to the sale of the Athlone Facility.
A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
 
 
 
Unrecognized
 
(In thousands)
    
Tax Benefits
 
Balance, December 31, 2021
  $
8,372  
Reductions based on the lapse of applicable statutes of limitations
   
(438 )
Additions based on tax positions related to prior periods
   
449  
Additions based on tax positions related to the current period
   
590  
Balance, December 31, 2022
 
$
8,973  
Reductions based on the lapse of applicable statutes of limitations
 
 
(1,073 )
Additions based on tax positions related to the prior period
 
 
281  
Additions based on tax positions related to the current period
 
 
558  
Balance, December 31, 2023
 
$
8,739  
Reductions based on the lapse of applicable statutes of limitations
 
 
(1,306 )
Additions based on tax positions related to the prior period
 
 
59  
Additions based on tax positions related to the current period
 
 
581  
Balance, December 31, 2024
 
$
8,073  
 
The unrecognized tax benefits at December 31, 2024, if recognized, would affect the Company’s effective tax rate. The Company does not 
anticipate that the amount of existing unrecognized tax benefits will materially increase or decrease within the next 12 months. The Company has elected to 
include interest and penalties related to uncertain tax positions as a component of its provision for taxes. For the years ended December 31, 2024, 2023 and 
2022, the Company’s accrued interest and penalties related to uncertain tax positions were not material.
(1)
(2)
(3)
(4)
(5)
(6)

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-34
The Company’s major taxing jurisdictions include Ireland and the U.S. (federal and state). These jurisdictions have varying statutes of limitations. In
the U.S., the 2021 through 2024 fiscal years remain subject to examination by the respective tax authorities, however, some states have longer statutes of 
limitations and additional fiscal years remain subject to examination. In Ireland, the 2020 through 2024 fiscal years remain subject to examination by the 
Irish tax authorities. Additionally, because of the Company’s Irish and U.S. loss carryforwards and credit carryforwards, certain tax returns from fiscal 
years 2002 onward may also be examined. These years generally remain open for three to four years after the loss carryforwards and credit carryforwards 
have been utilized.
 
18. SEGMENT REPORTING
Segment Information
Following the adoption of ASU 2023-07, the Company is required to disclose significant segment expenses that are regularly provided to the 
CODM. The Company’s CODM is periodically provided R&D expenses, selling and marketing expenses, and general and administrative expenses. Other 
external R&D expenses are composed of general research and development expenses and other external projects. Other internal R&D expenses include 
allocation expenses, travel expenses, and fees, taxes and dues.
 
The Company’s significant segment expenses are as follows: 
 
 
 
Year Ended December 31,
 
(In thousands)
 
2024
 
 
2023
   
2022
 
REVENUES:
 
 
 
 
 
   
 
 
Total revenue
  $
1,557,632    
$
1,663,405     $
1,111,795  
EXPENSES:
   
   
 
     
 
Cost of goods manufactured and sold (exclusive of amortization of 
acquired intangible assets shown below)
   
245,331  
   
253,037      
218,068  
External R&D expenses:
   
   
 
     
 
Development programs:
 
   
 
    
   
ALKS 2680
   
45,947  
   
31,321      
15,715  
LYBALVI
   
18,737  
   
15,379      
23,056  
Other external R&D expenses
   
36,627    
 
51,668      
57,423  
Total external R&D expenses
   
101,311  
 
 
98,368      
96,194  
Internal R&D expenses:
   
 
 
 
     
 
Employee-related
   
114,496    
 
128,282      
129,735  
Occupancy
   
11,206    
 
12,299      
12,449  
Depreciation
   
5,701  
   
9,578      
10,708  
Other internal R&D expenses
   
12,612    
 
22,279      
23,616  
Total internal R&D expenses
   
144,015  
 
 
172,438      
176,508  
R&D expenses
   
245,326    
 
270,806      
272,702  
Selling, general and administrative expenses:
 
   
 
    
   
Selling and marketing expense
   
446,214  
   
490,154      
392,211  
General and administrative expense
   
199,024    
 
199,597      
198,540  
Total selling, general and administrative expense
   
645,238  
 
 
689,751      
590,751  
Other segment (expenses) income 
   
(49,599 )
 
 
69,346      
(63,426 )
NET INCOME (LOSS) FROM CONTINUING OPERATIONS
   
372,138  
 
 
519,157      
(33,152 )
LOSS ON DISCONTINUED OPERATIONS, NET OF TAX
   
(5,068 )  
 
(163,400 )    
(125,115 )
NET INCOME (LOSS)
  $
367,070    
$
355,757     $
(158,267 )
 
(1)
“Other segment (expenses) income” during the years ended December 31, 2024, 2023 and 2022 includes “Amortization of acquired intangible assets”, “Other income (loss), net” 
and “Income tax provision (benefit)”. 
 
(1)

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-35
19. COMMITMENTS AND CONTINGENT LIABILITIES 
Litigation
From time to time, the Company may be subject to legal proceedings and claims in the ordinary course of business. On a quarterly basis, the 
Company reviews the status of each significant matter and assesses its potential financial exposure. If the potential loss from any claim, asserted or 
unasserted, or legal proceeding is considered probable and the amount can be reasonably estimated, the Company would accrue a liability for the estimated 
loss. Because of uncertainties related to claims and litigation, accruals are based on the Company’s best estimates, utilizing all available information. On a 
periodic basis, as additional information becomes available, or based on specific events such as the outcome of litigation or settlement of claims, the 
Company may reassess the potential liability related to these matters and may revise these estimates, which could result in material adverse adjustments to 
the Company’s operating results. At December 31, 2024, there were no potential material losses from claims, asserted or unasserted, or legal proceedings 
that the Company determined were probable of occurring.
INVEGA TRINZA ANDA Litigation
In September 2020, Janssen Pharmaceutica, Janssen Pharmaceuticals, Inc., and Janssen Research & Development, LLC initiated a patent 
infringement lawsuit in the NJ District Court against Mylan Labs, Mylan, and Mylan Institutional LLC following the filing by Mylan Labs of an ANDA 
seeking approval from the FDA to market a generic version of INVEGA TRINZA before the expiration of U.S. Patent No. 10,143,693 (the “’693 Patent”). 
Requested judicial remedies include recovery of litigation costs and injunctive relief. In May 2023, the NJ District Court issued an opinion in favor of the 
Janssen entities on the issues of infringement and validity of the ’693 Patent and the Mylan entities filed a notice of appeal of the decision. The Company is 
not a party to this proceeding.
VUMERITY ANDA Litigation
In July 2023, Biogen Inc., Biogen Swiss Manufacturing GmbH and Alkermes Pharma Ireland Limited filed a patent infringement lawsuit in the DE 
District Court against Zydus Worldwide DMCC, Zydus Pharmaceuticals (USA) Inc. and Zydus Lifesciences Limited (collectively, “Zydus”) following the 
filing by Zydus of an ANDA seeking approval from the FDA to engage in the commercial manufacture, use or sale of a generic version of VUMERITY 
(diroximel fumarate) delayed-release capsules for oral use, 231 mg, before expiration of the Company’s U.S. Patent Nos. 8,669,281; 9,090,558; and 
10,080,733. The filing of the lawsuit triggered a stay of FDA approval of the ANDA for up to 30 months in accordance with the U.S. Drug Price 
Competition and Patent Term Restoration Act of 1984 (the “Hatch-Waxman Act”). A bench trial is scheduled to begin on July 28, 2025. 
Government Matters
The Company has received a subpoena and civil investigative demands from U.S. state and federal governmental authorities for documents related 
to VIVITROL. The Company is cooperating with the investigations.
Product Liability and Other Legal Proceedings
The Company is involved in litigation and other legal proceedings incidental to its normal business activities, including a product liability case 
alleging that the FDA-approved VIVITROL labeling was inadequate and that VIVITROL caused the individual to suffer from opioid overdose and death. 
The Company intends to vigorously defend itself in these matters.
In addition, in January 2023, Acorda filed a petition with the U.S. District Court for the Southern District of New York (the “NY Southern District 
Court”) asking the court to confirm in part and modify in part the final arbitral award rendered by an arbitration panel in October 2022 and, as part of the 
requested modification, seeking an additional approximately $66.0 million in damages. In August 2023, the NY Southern District Court confirmed the final 
arbitral award and declined to modify the final award to increase the damages awarded thereunder. In September 2023, Acorda filed a notice of appeal of 
the NY Southern District Court decision to the U.S. Court of Appeals for the Federal Circuit (the “Federal Circuit Court”), and the Company filed a motion 
to transfer the appeal to the U.S. Court of Appeals for the Second Circuit. In January 2024, the Federal Circuit Court denied without prejudice the 
Company’s motion to transfer the appeal and instructed the parties to brief the jurisdictional question as part of the merits appeal. Briefing in the Federal 
Circuit Court is complete, and the matter is pending decision.

ALKERMES PLC AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
F-36
Guarantees
 
In connection with the Separation, the Company entered into the Assignment related to the 852 Winter Street Lease, which is described in more 
detail in Note 10, Leases in these “Notes to Consolidated Financial Statements” in this Annual Report. Although the Assignment transferred all of the 
rights, title and interest in, to and under the 852 Winter Street Lease to Mural US as of November 15, 2023, the Company ratified and reaffirmed for the 
remainder of the lease term its guarantor obligations under that certain Guaranty dated as of May 16, 2014 related to the 852 Winter Street Lease. Upon 
completion of the Separation, the Assignment was accounted for as a termination of the original lease and the Company de-recognized the right-of-use 
asset and lease liability related to the 852 Winter Street Lease. At December 31, 2024, the fair value of the guarantee was not material to the Company.
Purchase Commitments
 
The Company has open purchase orders for plant and equipment as part of its normal course of business. At December 31, 2024, the Company’s 
open purchase orders were $17.7 million for capital commitments.
 
 

Exhibit 4.1
 
DESCRIPTION OF ALKERMES PLC ORDINARY SHARES
The following is a summary description of the ordinary shares of Alkermes plc. This summary does not purport to be complete and is 
qualified in its entirety by reference to the Irish Companies Act 2014 (the “Companies Act”) and the complete text of our memorandum and 
articles of association, as they may be amended from time to time (together, our “Constitution”). A copy of our Constitution is incorporated 
by reference as Exhibit 3.1 to the Annual Report on Form 10-K of which this Exhibit 4.1 is a part. You should read the Companies Act and 
our Constitution carefully. Use of terms such as “us,” “we,” “our,” “Alkermes” or the “Company” in this Exhibit 4.1 is meant to refer to 
Alkermes plc.
Capital Structure
Authorized Share Capital
Our authorized share capital is €40,000 and $5,000,000, which is divided into 40,000 ordinary shares of €1.00 each, 450,000,000 
ordinary shares of $0.01 each and 50,000,000 undesignated preferred shares of $0.01 each. Our ordinary shares are registered under Section 
12(b) of the Securities Exchange Act of 1934, as amended.
We may issue shares subject to the maximum authorized share capital contained in our Constitution, and subject to the issuance and 
allotment authorities approved by our shareholders. Our authorized share capital may be increased or reduced by a resolution approved by a 
simple majority of the votes of our shareholders cast in person or by proxy at a general meeting (referred to under Irish law as an “ordinary 
resolution”). As a matter of Irish law, the board of directors of a public limited company (“plc”) like Alkermes may issue new ordinary or 
preferred shares without shareholder approval once authorized to do so by the company’s constitution or by an ordinary resolution adopted 
by the company’s shareholders at a general meeting. The authorization may be granted for a maximum period of five years, after which it 
must be renewed by the shareholders by an ordinary resolution. In May 2024, our shareholders authorized our board of directors (the 
“Board”) to allot and issue ordinary shares in an amount equal to approximately 20% of our issued ordinary share capital as of April 10, 
2024. This current authorization extends until November 30, 2025, at which point it will lapse unless renewed by our shareholders.
The rights and restrictions applicable to our ordinary shares are prescribed in our Constitution. Our Constitution permits the Board, 
without shareholder approval, to determine the terms of any preferred shares issued by us. Our Board is authorized, without obtaining any 
vote or consent of the holders of any class or series of shares, unless expressly provided by the terms of that class or series of shares, to 
provide from time to time for the issuance of other classes or series of preferred shares and to establish the characteristics of each class or 
series, including the number of shares, designations, relative voting rights, dividend rights, liquidation and other rights, redemption, 
repurchase or exchange rights and any other preferences and relative, participating, optional or other rights and limitations not inconsistent 
with applicable law.
Irish law does not recognize fractional shares held of record. Accordingly, our Constitution does not provide for the issuance of 
fractional shares, and our official Irish register of members (shareholders) will not reflect any fractional shares.

Pre-emption Rights, Share Warrants and Share Options
Under Irish law, unless otherwise authorized, when an Irish plc issues shares for cash to new shareholders, it is required to first offer 
those shares on the same or more favorable terms to existing shareholders of the company on a pro rata basis (commonly referred to as the 
“statutory pre-emption right”). However, Irish law permits such companies to opt out of the statutory pre-emption right for a period of up to 
five years if authorized by a resolution approved by not less than 75% of the votes of the company’s shareholders cast in person or by proxy 
at a general meeting (referred to under Irish law as a “special resolution”).  In May 2024, our shareholders authorized our Board to allot and 
issue shares for cash on a non-pre-emptive basis up to the amount of approximately 20% of our issued share capital as of April 10, 2024. This 
current authorization extends until November 30, 2025, at which point it will lapse unless renewed by our shareholders. The statutory pre-
emption right does not apply where shares are issued for non-cash consideration (such as in a stock-for-stock acquisition) and does not apply 
to the issue of non-equity shares (that is, shares that have the right to participate only up to a specified amount in any income or capital 
distribution) or where shares are issued pursuant to an employee stock option or similar equity plan.
Our Constitution provides that, subject to any shareholder approval requirement under any laws, regulations or the stock exchange 
rules to which we are subject, the Board is authorized, from time to time, in its discretion, to grant such persons, for such periods and upon 
such terms as the Board deems advisable, options to purchase such number of shares of any class or classes or of any series of any class as 
the Board may deem advisable, and to cause warrants or other appropriate instruments evidencing such options to be issued. The Companies 
Act provides that a board of directors may issue share warrants or options without shareholder approval once authorized to do so by its 
constitution or an ordinary resolution of shareholders. We are subject to the applicable rules and regulations of The Nasdaq Stock Market 
(“Nasdaq”) and the Internal Revenue Code of 1986, as amended, that require shareholder approval of certain equity plan and share issuances. 
Our Board may issue shares upon exercise of warrants or options without shareholder approval or authorization (up to the relevant authorized 
share capital limit).
Dividends
Under Irish law, dividends and distributions may only be made from distributable reserves. Distributable reserves generally means 
accumulated realized profits less accumulated realized losses and includes reserves created by way of capital reduction. In addition, no 
distribution or dividend may be made unless our net assets are equal to, or in excess of, the aggregate of our called-up share capital plus 
undistributable reserves and the distribution does not reduce our net assets below such aggregate. Undistributable reserves include: (i) our 
undenominated capital; (ii) the amount by which our accumulated unrealized profits, so far as not previously utilized by any capitalization, 
exceed our accumulated unrealized losses, so far as not previously written off in a reduction or reorganization of capital; and (iii) any other 
reserve we are prohibited, at law, from distributing.
The determination as to whether or not we have sufficient distributable reserves to fund a dividend must be made by reference to our 
“relevant accounts.” The “relevant accounts” will be either the last set of unconsolidated annual audited financial statements or other 
financial statements properly prepared in accordance with the Companies Act, which give a “true and fair view” of our unconsolidated 
financial position and accord with accepted accounting practice. The relevant accounts must be filed in the Companies Registration Office 
(the official public registry for companies in Ireland).
Our Constitution authorizes the Board to declare dividends out of funds lawfully available for distribution without shareholder 
approval to the extent they appear justified by the profits of the Company. The Board may also recommend a dividend to be approved and 
declared by the shareholders at 

a general meeting. The Board may direct that the payment be made by distribution of assets, shares or cash and no dividend issued may 
exceed the amount recommended by the Board. Dividends may be declared and paid in the form of cash or non-cash assets and may be paid 
in United States Dollars or any other currency.
Our Board may deduct from any dividend payable to any shareholder any amounts payable by such shareholder to us in relation to our 
shares.
The Board may also authorize us to issue shares with preferred rights to participate in dividends we declare. The holders of preferred 
shares may, depending on their terms, rank senior to our ordinary shares in terms of dividend rights and/or be entitled to claim arrears of a 
declared dividend out of subsequently declared dividends in priority to ordinary shareholders.
Share Repurchases, Redemptions and Conversions
Overview
Our Constitution provides that any ordinary share that we have agreed to acquire shall be deemed to be a redeemable share, unless the 
Board elects to treat such share acquisition otherwise. Accordingly, for Irish law purposes, repurchases of ordinary shares by us are effected 
as redemptions of those shares as described below under “—Our Repurchases and Redemptions.” If our Constitution did not contain such 
provision, our repurchases would be subject to many of the same rules that apply to purchases of our ordinary shares by subsidiaries 
described below under “—Purchases by Our Subsidiaries” including the shareholder approval requirements described below and the 
requirement that any open-market purchases be effected on a “recognized stock exchange.” Except where otherwise noted, references herein 
to repurchasing or buying back our ordinary shares refer to our or one of our subsidiaries’ redemption of ordinary shares, in each case in 
accordance with our Constitution and Irish law as described below.
Our Repurchases and Redemptions
Under Irish law, a company may issue redeemable shares and redeem them out of distributable reserves or the proceeds of a new issue 
of shares for that purpose. Please see also the “—Dividends” section above. We may only issue redeemable shares if the nominal value of the 
issued share capital that is not redeemable is not less than 10% of the nominal value of our total issued share capital. All redeemable shares 
must also be fully-paid. Redeemable shares may, upon redemption, be canceled or held in treasury. Based on the provision of our 
Constitution described above, shareholder approval is not required to redeem our shares.
We may also be given an additional general authority to purchase our own shares on-market which would take effect on the same 
terms and be subject to the same conditions as applicable to purchases by our subsidiaries as described below.
Our Board may also issue preferred shares that may be redeemed at our option or the option of the preferred shareholder, depending on 
the terms of such preferred shares. Please see “—Authorized Share Capital” above for additional information on preferred shares.
Under Irish law, repurchased and redeemed shares may be canceled or held as treasury shares. The nominal value of treasury shares 
held by us at any time must not exceed 10% of the nominal value of our issued share capital. We may not exercise any voting rights in 
respect of any shares held as treasury shares. Treasury shares may be canceled by us or re-issued subject to certain conditions.

Purchases by Our Subsidiaries
Under Irish law, a subsidiary may purchase our shares either on-market (an overseas market purchase) or off-market. For one of our 
subsidiaries to make on-market purchases of our ordinary shares, our shareholders must provide general authorization for such purchase by 
way of ordinary resolution. However, as long as this general authority has been granted, no specific shareholder authority is required for a 
particular on-market purchase of our ordinary shares by one of our subsidiaries. For an off-market purchase by one of our subsidiaries, the 
proposed purchase contract must be authorized by special resolution of our shareholders before the contract is entered into. The person whose 
shares are to be bought back cannot vote in favor of the special resolution and, for at least 21 days prior to the special resolution being 
passed, the purchase contract must be on display or must be available for inspection by shareholders at our registered office.
In order for one of our subsidiaries to make an overseas market purchase of our shares, such shares must be purchased on a 
“recognized stock exchange.” The Nasdaq Global Select Market, on which our shares are listed, is specified as a recognized stock exchange 
for this purpose by Irish law.
The number of shares held by our subsidiaries at any time will be included in any calculation of the permitted treasury share threshold 
of 10% of the nominal value of our issued share capital. While a subsidiary holds our shares, it cannot exercise any voting rights in respect of 
those shares. The acquisition of our shares by a subsidiary must be funded out of distributable reserves of the subsidiary.
Share Repurchase Program
On February 15, 2024, our Board authorized a share repurchase program to repurchase our ordinary shares in an aggregate amount of 
up to $400.0 million (exclusive of any fees, commissions or other expenses related to such repurchases) from time to time on the open market 
(the “Repurchase Program”), with the timing and amount of any repurchases under the Repurchase Program to be based on a variety of 
factors, including but not limited to ongoing assessments of our capital needs, alternative investment opportunities, the market price of our 
ordinary shares and general market conditions. The Repurchase Program has no set expiration date and may be suspended or discontinued at 
any time. During the year ended December 31, 2024, we repurchased approximately 7.9 million of our ordinary shares under the Repurchase 
Program at an average price of $25.33, at a total cost (exclusive of any fees, commissions or other expenses related to such repurchase) of 
$200.0 million. The Repurchase Program terminated, and superseded in its entirety, the prior share repurchase program authorized by our 
Board in September 2011, under which we had purchased a total of 8,866,342 ordinary shares at a cost of $114.0 million. 
As noted above, shareholder approval for repurchases under the Repurchase Program will not be required because all repurchases of 
our shares under the Repurchase Program will be effected as redemptions pursuant to our Constitution.
Bonus Shares
Under our Constitution, the Board may resolve to capitalize any amount standing to the credit of the reserves of the Company 
(including, but not limited to, the share premium account, capital redemption reserve, capital conversion reserve and profit and loss account), 
whether or not available for distribution, for any purpose, including, but not limited to, for the purposes of effecting any exchange of any 
rights and applying any such sum arising from such capitalization to pay up any shares of the Company and allot them, credited as fully paid, 
to any holders of such rights.

Lien on Shares, Calls on Shares and Forfeiture of Shares
Our Constitution provides that we will have a first and paramount lien on every share that is not a fully paid up share for all amounts 
payable at a fixed time or called in respect of that share. Subject to the terms of their allotment, our Board may call for any unpaid amounts in 
respect of any shares to be paid, and if payment is not made, the shares may be forfeited. These provisions are standard inclusions in the 
constitution of an Irish company limited by shares such as ours and will only be applicable to our shares that have not been fully paid up.
Consolidation and Division; Subdivision
Under our Constitution, we may, by ordinary resolution, consolidate and divide all or any of our share capital into shares of larger 
nominal value than our existing shares or subdivide our shares into smaller amounts than is fixed by our Constitution.
Reduction of Share Capital
We may, by ordinary resolution, reduce our authorized share capital in any way, provided that such resolution does not reduce the 
authorized share capital to an amount less than the issued share capital at such time. We also may, by special resolution and subject to 
confirmation by the Irish High Court, reduce or cancel our issued share capital in any way we think expedient.
Annual Meetings of Shareholders
We are required to hold annual general meetings at intervals of no more than 15 months, provided that an annual general meeting is 
held in each calendar year and no more than nine months after our fiscal year-end. Any annual general meeting may be held outside Ireland, 
provided that the Company makes all necessary arrangements to ensure that shareholders can participate in such meeting by technological 
means without leaving Ireland.
Notice of each annual general meeting must be given to all our shareholders and to our auditors. Our Constitution provides for a 
minimum notice period of 21 clear days (as defined in our Constitution), which is the minimum permitted under Irish law.
The only matters which must, as a matter of Irish law, be transacted at an annual general meeting are: (i) the consideration of the 
Company’s statutory financial statements and the reports of our Board and our statutory auditors thereon; (ii) the review by our shareholders 
of the Company’s affairs; (iii) the authorization of our Board to approve the remuneration of the statutory auditors; and (iv) the election 
and/or re-election of members of our Board in accordance with our Constitution. If no resolution is made in respect of the reappointment of 
an existing auditor at an annual general meeting, the existing auditor will be deemed to have continued in office.
Extraordinary General Meetings of Shareholders
Extraordinary general meetings may be convened by: (i) our Board; (ii) at the request of shareholders holding not less than 10% of our 
paid-up share capital carrying voting rights; or (iii) at the request of our auditors in certain circumstances in accordance with the Companies 
Act. Extraordinary general meetings are generally held for the purposes of approving Board or shareholder resolutions as may be required 
from time to time. At any extraordinary general meeting, only such business shall be conducted as is set forth in the notice thereof.
Notice of an extraordinary general meeting must be given to our shareholders and to our auditors. Under Irish law and our 
Constitution, the minimum notice periods are 21 clear days’ notice in writing for 

an extraordinary general meeting to approve a special resolution and 14 clear days’ notice in writing for any other extraordinary general 
meeting.
In the case of an extraordinary general meeting convened on the requisition of our shareholders, the proposed purpose of the meeting 
must be set out in the requisition notice. Upon receipt of this required notice, the Board has 21 days to convene a meeting of our shareholders 
to vote on the matters set out in the required notice. This meeting must be held within two months of the receipt of the requisition notice. If 
the Board does not convene the meeting within such 21-day period, the requisitioning shareholders, or any of them representing more than 
one half of the total voting rights of all of them, may themselves convene a meeting, which meeting must be held within three months of our 
receipt of the requisition notice.
If the Board becomes aware that our net assets are not greater than half of the amount of our called-up share capital, our Board must 
convene an extraordinary general meeting of our shareholders not later than 28 days from the date that they learn of this fact to consider how 
to address the situation.
Quorum for General Meetings
Our Constitution provides that no business shall be transacted at any general meeting unless a quorum is present. One or more 
shareholders present in person or by proxy holding not less than a majority of our issued and outstanding shares entitled to vote at the 
meeting in question constitute a quorum for such meeting.
Voting
Our Constitution provides that the Board or the chairman of the Board may determine the manner in which the poll is to be taken at 
each meeting and the manner in which the votes are to be counted.
Every shareholder is entitled to one vote for each ordinary share that they hold as of the record date for the meeting. Voting rights may 
be exercised by shareholders registered in our share register as of the record date for the meeting or by a duly appointed proxy, which proxy 
need not be a shareholder. Where interests in shares are held by a nominee trust company, this company may exercise the rights of the 
beneficial holders on their behalf as their proxy. All proxies must be appointed in the manner prescribed by our Constitution, which permit 
shareholders to notify us of their proxy appointments electronically in such manner as may be approved by the Board.
In accordance with our Constitution, our Board may from time to time authorize us to issue preferred shares. These preferred shares 
may have such voting rights as may be specified in the terms of such preferred shares (e.g., they may carry more votes per share than 
ordinary shares or may entitle their holders to a class vote on such matters as may be specified in the terms of the preferred shares). Treasury 
shares or shares of the Company that are held by our subsidiaries will not be entitled to be voted at general meetings of shareholders.
Irish law requires special resolutions of the shareholders at a general meeting to approve certain matters. Examples of matters requiring 
special resolutions include:
a)
amending our Constitution; 
b)
approving a change of our name; 
c)
authorizing the entering into of a guarantee or provision of security in connection with a loan, quasi-loan or credit transaction to a 
director or connected person; 
d)
opting out of pre-emption rights on the issuance of new shares; 

e)
creating a new class of shares;
f)
re-registration from a public limited company to a private company; 
g)
variation of class rights attaching to classes of shares (where the Constitution does not provide otherwise); 
h)
purchase of our own shares off-market;
i)
reduction of issued share capital; 
j)
sanctioning a compromise/scheme of arrangement; 
k)
resolving that we be wound up by the Irish courts; 
l)
resolving in favor of a shareholders’ voluntary winding-up; 
m) re-designation of shares into different share classes; and 
n)
setting the re-issue price of treasury shares.
Variation of Rights Attaching to a Class or Series of Shares
Under our Constitution and the Companies Act, any variation of class rights attaching to our issued shares must be approved by a 
special resolution of the shareholders of the affected class or with the consent in writing of the holders of three-quarters of all the votes of 
that class of shares.
The provisions of our Constitution relating to general meetings apply to general meetings of the holders of any class of shares except 
that the necessary quorum is determined by reference to the shares of the holders of the applicable class. Accordingly, for general meetings of 
holders of a particular class of shares, a quorum consists of the holders present in person or by proxy representing not less than a majority of 
the issued shares of that class entitled to vote at the meeting.
Acquisitions
An Irish public limited company may be acquired in a number of ways, including:
a)
a court-approved scheme of arrangement under the Companies Act. A scheme of arrangement with shareholders requires a court 
order from the Irish High Court and the approval of a majority in number representing 75% in value of the shareholders present and 
voting in person or by proxy at a meeting called to approve the scheme; 
b)
through a tender or takeover offer by a third party for all of our shares. Where the holders of 80% or more of our shares have 
accepted an offer for such shares, the remaining shareholders may also be statutorily required to transfer their shares. If the bidder 
does not exercise its “squeeze out” right, then the non-accepting shareholders also have a statutory right to require the bidder to 
acquire their shares on the same terms. If our shares were to be listed on the Irish Stock Exchange or another regulated stock 
exchange in the EU, this threshold would be increased to 90%; and 
c)
by way of a merger with a company incorporated in the European Economic Area (“EEA”) under the EU Cross-Border Mergers 
Directive (EU) 2017/1132 or with another Irish company under the Companies Act. Such a merger must be approved by a special 
resolution of the shareholders. Under certain circumstances, shareholders also may be entitled to have their shares acquired for cash.

Irish law does not generally require shareholder approval for a sale, lease or exchange of all or substantially all of a company’s 
property and assets.
Appraisal Rights
Irish law generally does not provide for “appraisal rights”.  However, it does provide for dissenters’ rights in certain situations, as 
described below.
Under a tender or takeover offer, the bidder may require any remaining shareholders to transfer their shares on the terms of the offer 
(i.e., a “squeeze out”) if it has acquired, pursuant to the offer, not less than 80% of the target shares to which the offer relates (in the case of a 
company like Alkermes that is not listed on an EEA regulated market). Dissenting shareholders have the right to apply to the Irish High 
Court for relief. 
A scheme of arrangement which has been approved by the requisite shareholder majority and sanctioned by the Irish High Court will be 
binding on all shareholders. Dissenting shareholders have the right to appear at the Irish High Court hearing and make representations in 
objection to the scheme. 
Under the European Communities (Cross-Border Mergers) Regulations 2008 governing the merger of an Irish company limited by 
shares such as we are and a company incorporated in the EEA, a shareholder: (i) who voted against the special resolution approving the 
merger; or (ii) of a company in which 90% of the shares are held by the other party to the merger, has the right to request that the company 
acquire its shares for cash at a price determined in accordance with the share exchange ratio set out in the merger agreement.
Similar rights apply in the case of a merger of an Irish plc into another company to which the provisions of the Companies Act apply.
Disclosure of Interests in Shares
Under the Companies Act, shareholders must notify us if, as a result of a transaction, the shareholder will become interested in 3% or 
more of our shares; or if as a result of a transaction a shareholder who was interested in more than 3% of our shares ceases to be so interested. 
Where a shareholder is interested in more than 3% of our shares, the shareholder must notify us of any alteration of his or her interest that 
brings his or her total holding through the nearest whole percentage number, whether an increase or a reduction. The relevant percentage 
figure is calculated by reference to the aggregate nominal value of the shares in which the shareholder is interested as a proportion of the 
entire nominal value of our issued share capital of (or any such class of share capital in issue). Where the percentage level of the 
shareholder’s interest does not amount to a whole percentage this figure may be rounded down to the next whole number. We must be 
notified within five business days of the transaction or alteration of the shareholder’s interests that gave rise to the notification requirement. If 
a shareholder fails to comply with these notification requirements, the shareholder’s rights in respect of any shares it holds will not be 
enforceable, either directly or indirectly. However, such person may apply to the court to have the rights attaching to such shares reinstated.
In addition to these disclosure requirements, we may, under the Companies Act, by notice in writing, require a person whom we know 
or have reasonable cause to believe to be, or at any time during the three years immediately preceding the date on which such notice is issued 
to have been, interested in shares comprised in our relevant share capital to: (i) indicate whether or not it is the case; and (ii) where such 
person holds or has during that time held an interest in our shares, to provide additional information, including the person’s own past or 
present interests in our shares. If the recipient of the notice fails to respond within the reasonable time period specified in the notice, we may 
apply to court for an order 

directing that the affected shares be subject to certain restrictions, as prescribed by the Companies Act, as follows:
a)
any transfer of those shares or, in the case of unissued shares, any transfer of the right to be issued with shares and any issue of 
shares, shall be void; 
b)
no voting rights shall be exercisable in respect of those shares; 
c)
no further shares shall be issued in right of those shares or in pursuance of any offer made to the holder of those shares; and
d)
no payment shall be made of any sums due from us on those shares, whether in respect of capital or otherwise.
The court may also order that shares subject to any of these restrictions be sold with the restrictions terminating upon the completion of 
the sale.
In the event that we are in an offer period pursuant to the Irish Takeover Rules made under the Irish Takeover Panel Act 1997 (the 
“Irish Takeover Rules”), accelerated disclosure provisions apply for persons holding an interest in our securities of 1% or more.
In addition, the beneficial ownership disclosure requirements of U.S. federal securities laws apply with respect to beneficial ownership 
of our shares.
Anti-Takeover Provisions
Irish Takeover Rules and Substantial Acquisition Rules
A transaction in which a third party seeks to acquire 30% or more of our voting rights will be governed by the Irish Takeover Panel 
Act 1997 and the Irish Takeover Rules made thereunder and will be regulated by the Irish Takeover Panel. The “General Principles” of the 
Irish Takeover Rules and certain important aspects of the Irish Takeover Rules are described below.
General Principles
The Irish Takeover Rules are built on the following general principles (the “General Principles”), which will apply to any transaction 
regulated by the Irish Takeover Panel:
a)
in the event of an offer, all holders of securities of the target company should be afforded equivalent treatment and, if a person 
acquires control of a company, the other holders of securities must be protected; 
b)
the holders of the securities of the target company must have sufficient time and information to enable them to reach a properly 
informed decision on the offer; where it advises the holders of securities, the board of the target company must give its views on the 
effects of implementation of the offer on employment, conditions of employment and the locations of the target company’s places 
of business; 
c)
the board of the target company must act in the interests of the company as a whole and must not deny the holders of securities the 
opportunity to decide on the merits of the offer; 
d)
false markets must not be created in the securities of the target company, the bidder or of any other company concerned by the offer 
in such a way that the rise or fall of the prices of the securities becomes artificial and the normal functioning of the markets is 
distorted; 

e)
a bidder must announce an offer only after ensuring that it can fulfill in full, any cash consideration if such is offered, and after 
taking all reasonable measures to secure the implementation of any other type of consideration; 
f)
a target company must not be hindered in the conduct of its affairs for longer than is reasonable by an offer for its securities; and 
g)
a substantial acquisition of securities (whether such acquisition is to be effected by one transaction or a series of transactions) shall 
take place only at an acceptable speed and shall be subject to adequate and timely disclosure.
Mandatory Bid
Under certain circumstances, a person who acquires our shares may be required under the Irish Takeover Rules to make a mandatory 
cash offer for our remaining outstanding shares at a price not less than the highest price paid for the shares by that acquirer (or any parties 
acting in concert with the acquirer) during the previous twelve months. This mandatory bid requirement is triggered if an acquisition of 
shares would increase the aggregate holding of an acquirer (including the holdings of any parties acting in concert with the acquirer) to shares 
representing 30% or more of our voting rights, unless the Irish Takeover Panel otherwise consents. An acquisition of shares by a person 
holding (together with its concert parties) shares representing between 30% and 50% of our voting rights would also trigger the mandatory 
bid requirement if, after giving effect to the acquisition, the percentage of the voting rights held by that person (together with its concert 
parties) would increase by 0.05% within a twelve-month period. Any person (excluding any parties acting in concert with the holder) holding 
shares representing more than 50% of the voting rights of a company is not subject to these mandatory offer requirements.
Voluntary Bid; Requirements to Make a Cash Offer and Minimum Price Requirements
If a person makes a voluntary offer to acquire our outstanding ordinary shares, the offer price must be no less than the highest price 
paid for our ordinary shares by the bidder or its concert parties during the three-month period prior to the commencement of the offer period. 
The Irish Takeover Panel has the power to extend the “look back” period to twelve months if the Irish Takeover Panel, taking into account 
the General Principles, believes it is appropriate to do so.
If the bidder or any of its concert parties has acquired our ordinary shares: (i) during the period of twelve months prior to the 
commencement of the offer period which represent more than 10% of our total ordinary shares; or (ii) at any time after the commencement of 
the offer period, the offer must be in cash (or accompanied by a full cash alternative) and the price per ordinary share must not be less than 
the highest price paid by the bidder or its concert parties during, in the case of (i), the 12-month period prior to the commencement of the 
offer period and, in the case of (ii), the offer period. The Irish Takeover Panel may apply this rule to a bidder who, together with its concert 
parties, has acquired less than 10% of our total ordinary shares in the 12-month period prior to the commencement of the offer period if the 
Irish Takeover Panel, taking into account the General Principles, considers it just and proper to do so.
An offer period will generally commence from the date of the first announcement of the offer or proposed offer.
Any announcement by us which commences an offer period must identify the potential bidder with which we are in talks or from 
which an approach was received. Any such bidder will then have a period of 42 days following such announcement (i.e. the announcement in 
which they are first identified) to announce a firm intention to make an offer or announce that they do not intend to do so, in which case they 
will then be restricted from making an offer for six months.

Substantial Acquisition Rules
The Irish Takeover Rules also contain rules governing substantial acquisitions of shares which restrict the speed at which a person may 
increase his or her holding of shares and rights over shares to an aggregate of between 15% and 30% of our voting rights. Except in certain 
circumstances, an acquisition or series of acquisitions of shares or rights over shares representing 10% or more of our voting rights is 
prohibited, if such acquisition(s), when aggregated with shares or rights already held, would result in the acquirer holding 15% or more but 
less than 30% of our voting rights and such acquisitions are made within a period of seven days. These rules also require accelerated 
disclosure of acquisitions of shares or rights over shares relating to such holdings.
Shareholder Rights Plan
Under our Constitution, our Board is authorized to adopt a shareholder rights plan (a “Shareholder Rights Plan”), upon such terms and 
conditions as the Board deems expedient and in the best interests of the Company, subject to applicable law, including the grant of rights 
(including approving the execution of any documents relating to the grant of such rights) to subscribe for ordinary shares or preferred shares 
in the share capital of the Company in accordance with the terms of any Shareholder Rights Plan.  The Board or any duly appointed 
committee thereof may effect an exchange of rights in accordance with such Shareholder Rights Plan.
Frustrating Action
Under the Irish Takeover Rules, our Board is not permitted to take any action which might frustrate an offer for our shares once the 
Board has received an approach which may lead to an offer or has reason to believe an offer is or may be imminent, subject to certain 
exceptions. Potentially frustrating actions such as: (i) the issue of shares, options or convertible securities; (ii) material acquisitions or 
disposals; (iii) entering into contracts other than in the ordinary course of business; or (iv) any action, other than seeking alternative offers, 
which may result in frustration of an offer, are prohibited during the course of an offer or at any time during which the Board has reason to 
believe an offer is imminent. Exceptions to this prohibition are available where:
a)
the action is approved by our shareholders at a general meeting; or
b)
the Irish Takeover Panel has given its consent, where: 
1.
it is satisfied the action would not constitute frustrating action; 
2.
the holders of 50% of the voting rights state in writing that they approve the proposed action and would vote in favor of it 
at a general meeting; 
3.
the action is taken in accordance with a contract entered into prior to the announcement of the offer; or 
4.
the decision to take such action was made before the announcement of the offer and either has been at least partially 
implemented or is in the ordinary course of business.
Certain other provisions of Irish law or our Constitution may be considered to have anti-takeover effects, including those described 
under the following captions: “—Authorized Share Capital” (regarding issuance of preferred shares), “—Pre-emption Rights, Share 
Warrants and Share Options,” “—Disclosure of Interests in Shares,” and “—Corporate Governance.”

Appointment of Directors of the Board
At each annual general meeting of shareholders, each director who is nominated for election or re-election at that annual general 
meeting of shareholders shall be eligible for election for a one-year term. Except as otherwise set forth in our Constitution, directors will be 
elected by way of ordinary resolution at a general meeting. In the event of a contested election (where the number of persons validly 
nominated for election exceeds the number of available director positions to be elected), only those directors in number equal to the number 
of available director positions and who receive the highest number of votes in favor of their election shall be elected. In no case will a 
decrease in the size of the Board shorten the term of any incumbent director. A director shall hold office until the close of the annual general 
meeting of shareholders for the year in which their term expires and until their successor shall be elected and shall qualify, subject, however, 
to prior death, resignation, retirement, disqualification or removal from office. Any vacancy on the Board, including a vacancy that results 
from an increase in the size of the Board or from the death, resignation, retirement, disqualification or removal of a director, shall be deemed 
a casual vacancy, and subject to the terms of any one or more classes or series of preferred shares (if any), shall only be filled by decision of a 
majority of the Board then in office. Any director appointed to fill a vacancy shall hold office until the next annual general meeting. A 
director retiring from the Board at a general meeting shall retain office until the close or adjournment of such meeting.
During any vacancy in the Board, the remaining directors have full power to act as the Board. If, at any general meeting of the 
Company (other than in the event of a contested election), the number of directors is reduced below the minimum prescribed by the Board 
due to the failure of any persons nominated to be directors to be elected, then in those circumstances, the nominee or nominees who receive 
the highest number of votes in favor of election shall be elected in order to maintain the prescribed minimum number of directors and each 
such director shall remain a director (subject to the provisions of the Companies Act and our Constitution) only until the conclusion of the 
next annual general meeting of the Company unless such director is re-elected by the our shareholders during such meeting.
Duration; Dissolution; Rights upon Liquidation
Our duration is unlimited. We may be dissolved and wound up at any time by way of a shareholders’ voluntary winding up or a 
creditors’ winding up. In the case of a shareholders’ voluntary winding-up, a special resolution of shareholders is required. We may also be 
dissolved by way of court order on the application of a creditor, or by the Companies Registration Office as an enforcement measure where 
we have failed to file certain returns.
The rights of the shareholders to a return of our assets on dissolution or winding up, following the settlement of all claims of creditors, 
may be prescribed in our Constitution or the terms of any preferred shares issued by our Board from time to time. The holders of preferred 
shares in particular may have the right to priority in our dissolution or winding up. If the Constitution contains no specific provisions in 
respect of a dissolution or winding up then, subject to the priorities of any creditors, the assets will be distributed to shareholders in 
proportion to the paid-up nominal value of the shares held. Our Constitution provides that our ordinary shareholders are entitled to participate 
pro rata in a winding up, but their right to do so may be subject to the rights of any preferred shareholders to participate under the terms of 
any series or class of preferred shares.
Uncertificated Shares
Pursuant to the Companies Act, a shareholder is entitled to be issued a share certificate on request and subject to payment of a nominal 
fee.

No Sinking Fund
Our ordinary shares have no sinking fund provisions.
No Liability for Further Calls or Assessments
Our ordinary shares are duly and validly issued and fully-paid.
Transfer and Registration of Shares
Our transfer agent maintains our share register, which is determinative of ownership of our shares. Our shareholders who hold shares 
beneficially are not the holders of record of such shares. Instead, the depository (for example, Cede & Co., as nominee for DTC) or other 
nominee is the holder of record of those shares. Accordingly, a transfer of shares from a person who holds such shares beneficially to a 
person who also holds such shares beneficially through a depository or other nominee will not be registered in our official share register, as 
the depository or other nominee will remain the record holder of any such shares.
A written instrument of transfer is required under Irish law in order to register on our official share register any transfer of shares: (i) 
from a person who holds such shares directly to any other person; (ii) from a person who holds such shares beneficially to a person who 
holds such shares directly; or (iii) from a person who holds such shares beneficially to another person who holds such shares beneficially 
where the transfer involves a change in the depository or other nominee that is the record owner of the transferred shares. An instrument of 
transfer is also required for a shareholder who directly holds shares to transfer those shares into his or her own broker account (or vice versa). 
Such instruments of transfer may give rise to Irish stamp duty, which must be paid prior to registration of the transfer on our official Irish 
share register. However, a shareholder who directly holds shares may transfer those shares into his or her own broker account (or vice versa) 
without giving rise to Irish stamp duty provided there is no change in the ultimate beneficial ownership of the shares as a result of the transfer 
and the transfer is not made in contemplation of a sale of the shares.
Any transfer of our ordinary shares that is subject to Irish stamp duty will not be registered in the name of the buyer unless an 
instrument of transfer is duly stamped and provided to the transfer agent. Our Constitution allows us, in our absolute discretion, to create an 
instrument of transfer and pay (or procure the payment of) any stamp duty, which is the legal obligation of a buyer. In the event of any such 
payment, we are (on our behalf or on behalf of our affiliates) entitled to: (i) seek reimbursement from the buyer or seller (at our discretion); 
(ii) set-off the amount of the stamp duty against future dividends payable to the buyer or seller (at our discretion); and (iii) claim a lien 
against the ordinary shares on which we have paid stamp duty. Parties to a share transfer may assume that any stamp duty arising in respect 
of a transaction in our ordinary shares has been paid unless one or both of such parties is otherwise notified by us.
Our Constitution delegates to our secretary the authority to execute an instrument of transfer on behalf of a transferring party.
In order to help ensure that the official share register is regularly updated to reflect trading of our ordinary shares occurring through 
normal electronic systems, we intend to regularly produce any required instruments of transfer in connection with any transactions for which 
we pay stamp duty (subject to the reimbursement and set-off rights described above). In the event that we notify one or both of the parties to 
a share transfer that we believe stamp duty is required to be paid in connection with the transfer and that we will not pay the stamp duty, the 
parties may either themselves arrange for the execution of the required instrument of transfer (and may request a form of instrument of 
transfer from us for this purpose) or request that we execute an instrument of transfer on behalf of the transferring party in a form 

determined by us. In either event, if the parties to the share transfer have the instrument of transfer duly stamped (to the extent required) and 
then provide it to our transfer agent, the buyer will be registered as the legal owner of the relevant shares on our official Irish share register 
(subject to the matters described below).
The Board may suspend registration of transfers from time to time, with such suspensions not to exceed 30 days in aggregate each 
year.

Exhibit 19.1
ACTIVE/136096699.2
 
 
ALKERMES plc 
INSIDER TRADING POLICY
 
In the normal course of business, officers, directors, employees (including contract employees) and independent contractors of Alkermes 
plc and its subsidiaries (the “Company”) may come into possession of material, nonpublic information about the Company, its business or 
other companies with which the Company interacts. This information is legally considered the property of the Company. If you are in 
possession of any such information, you may not seek to benefit from it by transacting in any such securities yourself, or passing on the 
information to others to enable them to benefit. 
 
It is also the policy of the Company to transact in Company securities in compliance with all applicable securities laws and regulations.
 
The misuse of material, nonpublic information is contrary to Company policy and U.S. securities laws and may lead to severe 
consequences. The purpose of this Insider Trading Policy (this “Policy”) is to inform you of your legal responsibilities in this area.
 
What is Insider Trading?
 
Insider trading, which entails transacting in a security with knowledge of material, nonpublic information about that security or the issuer of 
that security, is a crime that may be penalized by civil fines of reimbursement of amounts unduly received from such trading and punitive 
payments of up to three times the profit gained or loss avoided by such trading, as well as criminal fines of up to $5,000,000 (USD) and up 
to 20 years in jail for individuals. Under some circumstances, individuals convicted of insider trading may be subjected to civil liability in 
private lawsuits.
 
In addition to these consequences to the person engaging in insider trading, employers and other controlling persons (including supervisory 
personnel) are at risk under federal law for the actions of their employees. Controlling persons may, among other things, face major 
criminal and/or civil penalties if they recklessly fail to take preventive steps to control insider trading. Even if the Company is not 
prosecuted, the fact that a director, officer, employee or contractor of the Company was under investigation or prosecuted for insider 
trading could severely damage the reputation of the Company.
 
Thus, it is important both to you and the Company to prevent the occurrence of insider trading violations. You should be aware that stock 
market surveillance techniques designed to identify potential insider trading transactions have become extremely sophisticated and are 
being improved all the time. Insider trading cases have been successfully prosecuted against employees based on their trading through 
foreign accounts, trading by their family members and friends, and trading only involving a small number of shares. The chance that federal 
authorities or exchange regulators will detect even small-level trading is significant.
 
The Insider Trading Laws
 
As an officer, director, employee (including contract employee) or independent contractor of the Company, you may not seek to benefit 
personally by transacting in securities while in possession of material, nonpublic information. This rule applies to transacting, or your 
directing others to transact, in the Company’s securities (whether ordinary shares, preferred shares, convertible securities, stock options or 
any other derivative securities that provide the economic equivalent of ownership of any of the Company’s securities or an opportunity, 
direct or indirect, to benefit from any change in the value of the Company’s securities) and in the securities of other companies if you learn 
something in the course of your employment or relationship with the Company that might affect the value of any such other company.

 
2
 
	
For instance, if you learned that the Company was about to acquire ABC Corporation prior to a public announcement, it would almost 
certainly be an insider trading violation for you to transact in ABC securities as well as the Company’s securities. If you learned something 
about XYZ Corporation which was not publicly known while you were working for us on a collaboration with XYZ, transacting in XYZ 
securities might well be considered illegal, even if the information learned was not related to the collaboration. The insider trading rules 
apply to purchases, sales and gifts of securities. Sometimes material nonpublic information about the Company or another company with 
which the Company is working comes to your attention even though you are not directly involved in the project. You are nonetheless 
prohibited from transacting in the Company’s securities or the securities of such other company.
 
What is “Material” Information?
 
“Material” information is information that a typical investor would likely consider significant. There is no fixed quantitative threshold 
amount for determining materiality; even very small quantitative changes can be qualitatively material if they would result in a movement 
in the price of the Company’s ordinary shares. If you learn something that leads you to want to buy, sell or gift securities, that information 
could be considered material. Both positive and negative information may be material. It is important to keep in mind that material 
information need not be definitive information; information that something is likely to happen, or even just that it may happen, can be 
considered material. Examples of information that could be potentially material include changes in Company management, threatened 
litigation, Company or product performance above or below issued financial guidance, the Company’s involvement in merger or licensing 
negotiations (even if the deal had not yet been agreed to), or the success of a feasibility or clinical study for a development compound. Keep 
in mind that the U.S. Securities and Exchange Commission (the “SEC”) takes the view that the mere fact that you are in possession of the 
material, nonpublic information is enough to bar you from trading. Therefore, trading while in possession of material, nonpublic 
information or tipping this information to others to trade, even if such trades were not based on such information, is violative of this Policy 
and the law. If you have questions as to whether information in your possession may be deemed “material”, you may seek guidance from 
the Chief Financial Officer or the Chief Legal Officer to assist in that determination. It is important, however, that you bear in mind that the 
ultimate responsibility for determining whether you are in possession of material, nonpublic information belongs to you, and that any 
advice or action on the part of the Company, the Chief Financial Officer, the Chief Legal Officer or any other employee or director pursuant 
to this Policy (or otherwise) does not in any way constitute legal advice or insulate you from liability under applicable U.S. securities laws.
What is “Nonpublic” Information?
 
“Nonpublic” information is any information that is not reasonably accessible to the investing public. To show that information is public, it is 
necessary to point to some fact that establishes that the information has become publicly available, such as the filing of a report with the SEC, 
the distribution of a press release through a widely disseminated news or wire service, or by other means that are reasonably designed to 
provide broad public access. Before a person who possesses material, nonpublic information can trade, there must also be adequate time for 
the market as a whole to absorb the information that has been disclosed. Once the Company releases information through public channels (for 
instance, in a press release or an SEC filing), it may take up to 48 hours for it to be considered broadly disseminated. For purposes of this 
Policy, information will be considered public after the close of trading on the second full trading day following the Company’s public release 
of the information.
 
 
 

 
3
 
	
Policy
 
Prohibited Use of Material, Nonpublic Information
When you are in possession of material, nonpublic information about the Company, or about any other company if such information is 
gained in the course of your employment or other relationship with us, or when you are in a “blackout period” (as described below), you are 
prohibited from engaging in any activity that would be considered unlawful trading or tipping under the U.S. securities laws, whether in the 
Company’s securities or the securities of another company. These prohibitions extend to your family members living in the same home as 
you, family members who do not live in the same home as you but whose transactions are directed by you or subject to your influence or 
control and to any investment fund, trust, retirement plan, partnership, corporation or other entity over which you have the ability to 
influence or direct investment decisions concerning securities, and continues whenever and for as long as you know or are in possession of 
material, nonpublic information or the blackout period is in place. You are responsible for ensuring compliance with this Policy by all such 
persons affiliated with you. The SEC and federal prosecutors may presume that trading by your family members (including those that do 
not live in the same home as you) and friends is based on information you supplied and may treat any such transactions as if you had traded. 
There is no exception for small transactions or transactions that may seem necessary or justifiable for personal financial emergency or 
hardship.
 
Tipping Information to Others
Besides your obligation to refrain from trading or having others trade on your behalf while you are in possession of material, nonpublic 
information, you are also prohibited from “tipping” others. The concept of unlawful tipping includes passing on material, nonpublic 
information to friends, family members or others under circumstances that suggest that you were trying to help them make a profit or avoid a 
loss or enjoy some other benefit. When tipping occurs, both the “tipper” and the “tippee” may be held liable, and this liability may extend to 
all those to whom the tippee gives information. Besides being considered a form of insider trading, tipping is also a serious breach of 
corporate confidentiality. You should be careful to avoid discussing confidential information in any place (for instance, at lunch, on public 
transportation, on a cell phone in a public place, in elevators, etc.) where such information may be overheard or intercepted by others. You 
should exercise care when discussing any material, nonpublic information with other members of the Company who do not have a “need to 
know” such information, even though they are also subject to this Policy, so as to reduce the possibility of leaks.
 
Transacting in Company Securities
If you want to buy, sell, gift (which term, as used in this Policy, includes charitable donations) or otherwise transact in any Company 
securities, you must first determine if you are in possession of material, nonpublic information. If so, you may not buy, sell, gift or otherwise 
transact in, or provide such information to others to transact in, any Company securities, no matter what position you hold with the Company. 
This includes the exercise of stock options using cash from the sale of shares to pay the exercise price (also known as a “cashless exercise”), 
and bona fide gifts of Company securities. If you are not sure whether or not you are in possession of material, nonpublic information, you 
should not buy, sell, gift or otherwise transact in, or tip others to transact in, any Company securities.
 
From time to time, the Chief Financial Officer or Chief Legal Officer may determine that certain persons within the Company or everyone 
within the Company may not buy, sell, gift or otherwise transact in Company securities, also known as a “blackout period.” You will be 
notified when a blackout period is in place.  A determination by the Chief Financial Officer or Chief Legal Officer that no purchases, sales or 
other transactions may be made is itself deemed to be material, nonpublic information that should not be discussed outside the Company.
 

 
4
 
	
Since financial information about the Company can significantly affect trading in the Company’s securities, all officers, directors, employees 
(including contract employees) and independent contractors are subject to a blackout period beginning at the end of the 15th day of the final 
month of each fiscal quarter, and ending after the close of trading on the second full trading day following the Company’s public release of 
its quarterly or annual financial results or other financial information (the “Quarterly Blackout Period”). You may not buy, sell, gift or 
otherwise transact in, or tip others to transact in, any Company securities or enter into a planned sales program for transactions in Company 
securities during any Quarterly Blackout Period.
 
The Company may also issue material information to the public at other times, which may result in additional blackout periods outside of the 
Quarterly Blackout Periods. In such circumstances, you will be notified of the applicable blackout period. 
 
Please note that stock options issued by the Company have an expiration date. It is your responsibility to track the expiration date of any 
stock options which you may have been granted and to plan accordingly if you wish to exercise such options via a cashless exercise.
 
Transacting in Securities of Other Companies
As previously discussed in this Policy, if you want to transact in any securities (including, without limitation, common or ordinary shares, 
preferred shares, convertible securities, or warrants) of a company that is a corporate partner, a collaborator or a possible acquisition target, 
or any other company about which you’ve received information in the course of your employment with us, you must first determine whether 
you are in possession of any nonpublic information related to such company and whether that information is material to that company. If you 
are not sure whether you are in possession of material, nonpublic information, you should not buy, sell, gift or otherwise transact in, or tip 
others to transact in, any securities of such other company.
 
Post-Termination Transactions
This Policy continues to apply even after termination of your employment or other service relationship with the Company. If an individual is 
in possession of material, nonpublic information received in the course of their employment or other service relationship with us, when their 
employment or other service relationship terminates, that individual may not trade in the securities of the company to which such information 
relates until that information has become public or is no longer material.
 
Additional Prohibited Transactions
Officers, directors, employees (including contract employees) and independent contractors are prohibited from engaging in speculative 
transactions in the Company’s securities, including by way of the purchase or sale of “put” or “call” options or other derivative securities 
directly linked to the Company’s equity; short sales of the Company’s equity; the use of Company securities as a pledge or as collateral in a 
margin account; and trading in straddles, equity swaps, or other hedging transactions directly linked to Company securities, even if such 
persons do not possess material, nonpublic information.
 
Preclearance
To provide assistance in preventing inadvertent insider trading violations and avoiding the appearance of an improper transaction (which 
could result, for example, when an employee engages in a trade while unaware of a pending major Company development) and for purposes 
of compliance with the reporting and other disclosure requirements relating to insider transactions, the Company has implemented the 
following preclearance policy:
 
•
Members of the Alkermes plc board of directors, management committee and disclosure committee, “officers” of the Company 
(as such term is defined in Section 16a-1(f) of the 

 
5
 
	
Securities Exchange Act of 1934, as amended (the “Exchange Act”), and each such officer, a “Section 16 Reporting Officer”), 
Company employees in a position of vice president (or equivalent) or higher, Company employees in the finance, business 
development, alliance management, business planning, corporate affairs, investor relations, legal, and certain employees 
designated by management in the research and development, commercial and information technology organizations, must obtain 
preclearance from the Chief Financial Officer or Chief Legal Officer before they may transact in Company securities, which, for 
the avoidance of doubt, also includes gifting Company securities (whether directly or through a donor advised fund), even if no 
blackout period is in effect such that the “window” for trading in Company securities is then open and transactions in Company 
securities would otherwise be allowed under this Policy.
•
Additionally, from time to time, certain additional individuals may be exposed to material, nonpublic information because of 
their job or other relationship with the Company and shall be required to seek preclearance from the Chief Financial Officer or 
Chief Legal Officer before transacting in any Company securities.
•
A list of individuals requiring preclearance by the Chief Financial Officer or Chief Legal Officer will be periodically generated 
by the legal department of the Company and communicated to the employees on the list (the “Preclearance List”).
 
Be advised that preclearance from the Chief Financial Officer or Chief Legal Officer does not constitute legal advice, does not constitute 
confirmation that you do not possess material, nonpublic information and does not relieve you of your obligations under the U.S. securities 
laws; it is a safeguard that the Company has put in place to help protect you and the Company.
 
If you are an individual who requires preclearance and you are contemplating a transaction in the Company’s securities, you should contact 
the legal department at least two business days in advance. You can send your preclearance request to preclearancerequest@alkermes.com. 
 
You are responsible for ensuring that you do not have material, nonpublic information about the Company, or about other companies if you 
learn something in the course of your employment or relationship with the Company that might affect the value of any such other company, 
before engaging in a transaction involving such company’s securities and that you comply with any and all other legal obligations. 
Therefore, before you make a request for preclearance, you should carefully consider whether you are aware of any material, nonpublic 
information and should describe fully any relevant circumstances in your preclearance request. The Chief Financial Officer or Chief Legal 
Officer is under no obligation to approve any trade submitted for preclearance.
 
If you are precleared to trade, your transaction must be executed within 48 hours after receiving preclearance approval but, even if so 
precleared, may not be executed if you acquire material, nonpublic information after preclearance approval and before executing the trade. 
If the transaction does not take place during that time, you must re-request preclearance through the same process.
 
Special Types of Permitted Transactions
 
C ash Exercises of Stock Options
 
This Policy does not apply to an exercise of stock options when payment of the exercise price is made entirely in cash. However, this 
Policy does apply to any shares acquired through an option exercise made entirely in cash, and you may not sell any of those acquired 
shares for so long as you are in possession of material, nonpublic information. This Policy also applies to the use of Company shares to 
constitute part, or all, of the exercise price of a stock option (referred to as a “cashless exercise” of a 

 
6
 
	
stock option), or any other market sale for the purpose of generating the cash needed to pay the exercise price of a stock option. No matter 
how you exercise or otherwise acquire Company securities, during your employment with the Company, you may only sell Company 
securities, including those obtained through a stock option exercise, at the times outlined in this Policy.
 
Restricted Stock Unit Awards (“RSUs”)
This Policy does not apply to the vesting of RSUs, or to the Company’s withholding of shares upon vesting of RSUs to satisfy tax 
withholding requirements.
 
Planned Sales Programs under Rule 10b5-1
 
Entry into a trading plan, arrangement or instruction that meets the requirements of Rule 10b5-1 of the Exchange Act (a “Rule 10b5-1 Plan” 
or a “Plan”) enables you to trade in Company securities outside of our open trading windows, even when in possession of material, 
nonpublic information.  
 
If you are a member of the Alkermes plc board of directors, management committee or disclosure committee, a Section 16 Reporting 
Officer, or a member of one of the functions listed above that are subject to preclearance, the Company strongly encourages you to transact 
in the Company’s securities under a Rule 10b5-1 Plan. In addition, if you routinely have access to material, nonpublic information as part 
of your responsibilities with the Company, you may find a Rule 10b5-1 Plan to be useful as well. 
 
Members of the Alkermes plc board of directors and Section 16 Reporting Officers should also be mindful of their respective share 
ownership and/or holding requirements under the Alkermes plc Amended and Restated Share Ownership and Holding Guidelines when 
considering establishing a Rule 10b5-1 Plan or any other transaction in the Company’s securities.
 
If you intend to trade pursuant to a Rule 10b5-1 Plan, such plan, arrangement or instruction must: 
•
satisfy the requirements of Rule 10b5-1;
•
be documented in writing and include a written representation by you that you are not aware of any material nonpublic 
information concerning the Company and that you are adopting the Plan in good faith and not as part of a plan or scheme to 
evade the prohibitions of Section 10(b) and Rule 10b-5 of the Exchange Act;
•
be established during an open trading window (in accordance with this Policy) and at a time when you do not possess material, 
nonpublic information about the Company; and 
•
be pre-approved by the Chief Financial Officer or the Chief Legal Officer.
 
In order to satisfy Rule 10b5-1, all Rule 10b5-1 Plans are subject to a mandatory cooling off period (consisting of at least 30 days or more 
under certain circumstances for employees other than Section 16 Reporting Officers and at least 90 days or more under certain 
circumstances for Section 16 Reporting Officers and members of the Alkermes plc board of directors) prior to the date of the first planned 
sale or other transaction under such Plan. All Rule 10b5-1 Plans must also adhere to certain prescribed limitations on the number and nature 
of Plans that may be in effect at a given time (e.g., minimum number of trades requirement, term limitations) and such other Plan 
parameters as the Chief Financial Officer or the Chief Legal Officer deems to be in the best interests of the Company. 
 
Modifications to, or terminations of, Rule 10b5-1 Plans are highly discouraged and require the approval of the Chief Financial Officer or 
the Chief Legal Officer. If you are a director or a Section 16 Reporting Officer, the Company will be required to disclose any adoption, 
modification or termination of a 10b5-1 Plan by you and certain details relating to such Plan in its periodic reports filed with the SEC. Any 
questions in respect of a Rule 10b5-1 Plan, requests for approval of entry into, modification or termination of a Rule 10b5-1 Plan or the 
required disclosure relating to such Plans, should be submitted 

 
7
 
	
to preclearancerequest@alkermes.com.
 
Transactions effected pursuant to a pre-approved and executed Rule 10b5-1 Plan will not be subject to the Company’s blackout periods or 
other preclearance procedures.
 
Investing in Mutual Funds
You may invest in any mutual fund which invests in the Company’s securities or the securities of any company with which the Company 
has a relationship without regard to this Policy.
 
Reports of purchases, sales and gifts for Board members and Section 16 Reporting Officers
 
If you are a member of the Alkermes plc board of directors or a Section 16 Reporting Officer, keep in mind the various restrictions on 
securities transactions imposed under Section 16 of the Exchange Act and the corresponding reporting requirements. You must immediately 
report to the Chief Financial Officer or the Chief Legal Officer or their designees all transactions made in the Company’s securities by you, 
any family member, and any trusts or entities that you control, including gifts and cash exercises of stock options. The Company requires 
same-day reporting to it of any such transaction due to SEC requirements that certain insider reports be filed with the SEC by the second 
day after the date on which a reportable transaction occurs. In addition, you must comply with the preclearance procedures set forth above 
in respect of any such transactions.
 
Disclosure of Confidential Information
 
The confidentiality of all material, nonpublic information that you learn while working at the Company (whether or not such information is 
about the Company) must be strictly maintained within the Company. Only certain executive officers and certain members of the Corporate 
Affairs and Investor Relations departments are authorized to disclose material, nonpublic information about the Company to the public, 
members of the investment community (including analysts), or to shareholders, unless one of these executive officers expressly authorizes 
disclosure by another employee in advance.
 
In addition, with advances in electronic communications and the corresponding increased use of the Internet, email communications, social 
networking sites, video sharing websites, electronic bulletin boards, chat rooms and blogs, electronic discussions about companies and their 
business prospects (collectively, “Electronic and Social Media”) have become common. Inappropriate communications disseminated on the 
Internet may pose an inherently greater risk due to the size of the audience they can reach. It is important for Company employees who 
choose to participate in Electronic and Social Media to understand what is recommended, expected and required when discussing 
Company-related topics. In this context, you are prohibited from sharing any nonpublic information about the Company and from 
discussing revenues, future plans, prospects, products or the share price of the Company in any comments, responses, or postings on any 
Electronic and Social Media and are subject in all respects to the Company’s social media policy, available on the Company’s internal 
intranet.
 
You should not, under any circumstances, recommend or express opinions as to the Company’s securities or comment on rumors or 
predictions about the Company, regardless of whether the rumor is false and whether you think your recommendation, opinion or comment 
is being made on an anonymous basis (for example, in any Electronic and Social Media). If you are ever asked a direct question about the 
Company or any prevailing rumor about the Company, you should respond that it is Company policy not to comment on such matters and 
that any questions should be directed to the Company’s Investor Relations department or Chief Financial Officer. This Policy operates in 
addition to any other Company policies relating to safeguarding the confidentiality of the Company’s internal, proprietary information.
 
Reporting of Violations

 
8
 
	
 
If you violate this Policy or any federal or state laws governing insider trading, or know of any such violation by any director, officer, 
employee, or independent contractor of the Company, you must report the violation immediately to your supervisor, or to the Chief 
Financial Officer or the Chief Legal Officer of the Company. Persons violating this Policy will be subject to disciplinary action by the 
Company, up to and including termination.
 
Modifications
 
The Company may at any time change this Policy or adopt such other policies or procedures which it considers appropriate to carry out the 
purposes of this Policy. A current copy of this Policy is maintained on the Corporate Governance section of the Investors tab of the 
Company’s website.
 
Questions
 
You are encouraged to ask questions and seek any follow-up information that you may require with respect to the matters set forth in this 
Policy. Please direct all questions to preclearancerequest@alkermes.com.
 
*  *  *  
 
Your failure to observe this Policy could lead to significant legal and other consequences, including the potential termination of your 
employment.
 
 
 

Exhibit 21.1
SUBSIDIARIES
 
 
 
 
Name
    
Jurisdiction
 
Alkermes Ireland Holdings Limited
 
Ireland
 
Alkermes Pharma Ireland Limited
 
Ireland
 
Daravita Pharma Ireland Limited
 
Ireland
 
Alkermes Finance Ireland (No 3) Limited
 
Ireland
 
Alkermes Science Four Limited
 
Ireland
 
Alkermes Science Five Limited
 
Ireland
 
Alkermes US Holdings, Inc.
 
Delaware
 
Alkermes, Inc.
 
Pennsylvania
 
Alkermes Controlled Therapeutics, Inc.
 
Pennsylvania
 
Rodin Therapeutics, Inc.
 
Delaware
 
 

 
 
Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in the Registration Statements on Form S‑8 (Nos. 333-179545, 333-184621, 333-200777, 
333-214952, 333-226359, 333-232831, 333-240170, 333-258229, 333-266350, 333-273456 and 333-280984) of Alkermes plc of our report dated February 
12, 2025 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 10‑K.
/s/ PricewaterhouseCoopers LLP
Boston, Massachusetts
February 12, 2025
 

Exhibit 31.1
CERTIFICATIONS
I, Richard F. Pops, certify that:
1.
I have reviewed this annual report on Form 10-K of Alkermes plc;
2.
Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make 
the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered 
by this report;
3.
Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects 
the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.
The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined 
in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 
15d-15(f)) for the registrant and have:
a.
Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our 
supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us 
by others within those entities, particularly during the period in which this report is being prepared;
b.
Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under 
our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial 
statements for external purposes in accordance with generally accepted accounting principles;
c.
Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the 
effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
d.
Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most 
recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably 
likely to materially affect, the registrant's internal control over financial reporting; and
5.
The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, 
to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):
a.
All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are 
reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and
b.
Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's 
internal control over financial reporting.
 
 
 
Date:     February 12, 2025
 
/s/ Richard F. Pops
 
 
 
Richard F. Pops
 
 
 
 
 
 
 
Chairman and Chief Executive Officer
 
 
 
(Principal Executive Officer)
 

Exhibit 31.2
CERTIFICATIONS
I, Blair C. Jackson, certify that:
1.
I have reviewed this annual report on Form 10-K of Alkermes plc;
2.
Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the 
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this 
report;
3.
Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects 
the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.
The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in 
Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-
15(f)) for the registrant and have:
a.
Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our 
supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us 
by others within those entities, particularly during the period in which this report is being prepared;
b.
Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under 
our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial 
statements for external purposes in accordance with generally accepted accounting principles;
c.
Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the 
effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
d.
Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most 
recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably 
likely to materially affect, the registrant's internal control over financial reporting; and
5.
The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, 
to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):
a.
All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are 
reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and
b.
Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's 
internal control over financial reporting.
 
 
 
Date:     February 12, 2025
 
/s/ Blair C. Jackson
 
 
 
Blair C. Jackson
 
 
 
 
 
 
 
Executive Vice President, Chief Operating Officer
 
 
 
(Interim Principal Financial Officer)
 

Exhibit 32.1
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Annual Report on Form 10-K of Alkermes plc (the "Company") for the period ended December 31, 2024 as filed with the 
Securities and Exchange Commission on the date hereof (the "Report"), we, Richard F. Pops, Chairman and Chief Executive Officer of the Company, and 
Blair C. Jackson, Executive Vice President, Chief Operating Officer and Interim Principal Financial Officer of the Company, certify, pursuant to 18 U.S.C. 
Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to our knowledge:
(1)
The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and
(2)
The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
 
 
 
Date:     February 12, 2025
 
/s/ Richard F. Pops
 
 
 
Richard F. Pops
 
 
 
 
 
 
 
Chairman and Chief Executive Officer
 
 
 
(Principal Executive Officer)
 
 
 
 
 
 
 
 
 
Date:     February 12, 2025
 
/s/ Blair C. Jackson
 
 
 
Blair C. Jackson
 
 
 
 
 
 
 
Executive Vice President, Chief Operating Officer
 
 
 
(Interim Principal Financial Officer)