Alkermes plc. - Director's Dealing 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

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

Reporting Person: Brown Iain Michael (SVP, Chief Financial Officer)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-02-22	Ordinary Shares	M	7109	—	Acquired	144989	Direct
2025-02-22	Ordinary Shares	F	3154	$35.32	Disposed	141835	Direct
2025-02-23	Ordinary Shares	M	5825	—	Acquired	147660	Direct
2025-02-23	Ordinary Shares	F	2587	$35.32	Disposed	145073	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-02-22	Restricted Stock Unit Award	$	M	7109	Disposed		Ordinary Shares (7109)	Direct
2025-02-23	Restricted Stock Unit Award	$	M	5825	Disposed		Ordinary Shares (5825)	Direct

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.