Alkermes plc. — Director's Dealing 2025

May 23, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2025-05-21

Reporting Person: LAURENCIN CATO T (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-05-21	Non Qualified Stock Option (Right to Buy)	$30.53	A	13474	Acquired	2035-05-21	Ordinary Shares (13474)	Direct
2025-05-21	Restricted Stock Unit Award	$	A	6142	Acquired		Ordinary Shares (6142)	Direct

Footnotes

F1: Shares subject to the stock option award vest and become exercisable in full on 5/21/2026.

F2: Each restricted stock unit represents a contingent right to receive one ordinary share.

F3: Shares subject to the restricted stock unit award vest in full on 5/21/2026.