Alkermes plc. — Director's Dealing 2025

Feb 26, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2025-02-22

Reporting Person: Gaffin David Joseph (EVP, CLO, Alkermes, Inc.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-02-22	Ordinary Shares	M	7432	—	Acquired	199463	Direct
2025-02-22	Ordinary Shares	F	3300	$35.32	Disposed	196163	Direct
2025-02-23	Ordinary Shares	M	7689	—	Acquired	203852	Direct
2025-02-23	Ordinary Shares	F	3414	$35.32	Disposed	200438	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-02-22	Restricted Stock Unit Award	$	M	7432	Disposed		Ordinary Shares (7432)	Direct
2025-02-23	Restricted Stock Unit Award	$	M	7689	Disposed		Ordinary Shares (7689)	Direct

Footnotes

F1: Each restricted stock unit represents a contingent right to receive one ordinary share.

F2: This award is fully vested in accordance with its terms.

F3: Shares subject to the restricted stock unit award vest in four equal annual installments, commencing on 2/23/2024.