SEC FORM 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person ^*

Jackson Blair Curtis

(Last)

(First)

(Middle)

CONNAUGHT HOUSE

1 BURLINGTON ROAD

(Street)

DUBLIN 4 IRELAND

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
Alkermes plc. [ ALKS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
President & CEO, Alkermes plc

3. Date of Earliest Transaction (Month/Day/Year)
08/05/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Employee Stock Option (Right to Buy)	$ 49.61	08/05/2026		A⁽¹⁾		93,229		⁽²⁾	08/05/2036	Ordinary Shares	93,229	$ 0	93,229	D
Employee Stock Option (Right to Buy)	$ 49.61	08/05/2026		A⁽¹⁾		124,305		⁽³⁾	08/05/2036	Ordinary Shares	124,305	$ 0	124,305	D

Explanation of Responses:

1. This award was granted in connection with the reporting person's appointment as President and Chief Executive Officer.

2. Shares underlying the stock option vest and become exercisable in four equal annual installments, commencing on 8/5/2027.

3. Shares underlying the stock option shall vest and become exercisable, if at all, in two tranches based upon the closing price of an ordinary share of Alkermes plc, as reported by the Nasdaq Global Select Market or another national securities exchange on which Alkermes plc's ordinary shares are listed, trading at certain pre-specified levels for 30 consecutive trading days, subject in each case to the reporting person's completion of two years of continuous service (or less, in the event of a change in control) in the role of President and Chief Executive Officer. This award expires ten years from the date of grant.

	/s/ Shantale Greenson, attorney-in-fact for Blair C. Jackson	08/07/2026
	** Signature of Reporting Person	Date
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