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: Parisi Samuel Joseph (VP, Finance (Interim PAO))

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-02-22	Ordinary Shares	M	3114	—	Acquired	10831	Direct
2025-02-22	Ordinary Shares	F	983	$35.32	Disposed	9848	Direct
2025-02-23	Ordinary Shares	M	2284	—	Acquired	12132	Direct
2025-02-23	Ordinary Shares	F	672	$35.32	Disposed	11460	Direct
2025-02-25	Ordinary Shares	S	3743	$35.26	Disposed	7717	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-02-22	Restricted Stock Unit Award	$	M	3114	Disposed		Ordinary Shares (3114)	Direct
2025-02-23	Restricted Stock Unit Award	$	M	2284	Disposed		Ordinary Shares (2284)	Direct

Footnotes

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

F2: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 9/11/2024.

F3: This award is fully vested in accordance with its terms.

F4: Shares subject to the restricted stock unit award vest in four equal annual installments, commencing on 2/23/2024.