Alkermes plc. — Director's Dealing 2025

Jun 2, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2025-05-31

Reporting Person: snyderman nancy lynn MD (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-05-31	Ordinary Shares	M	8013	—	Acquired	12652	Direct
2025-05-31	Ordinary Shares	F	1924	$30.61	Disposed	10728	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-05-31	Restricted Stock Unit Award	$	M	8013	Disposed		Ordinary Shares (8013)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	20783	Indirect

Footnotes

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

F2: Shares are held by the Nancy Lynn Snyderman Revocable Trust (the "Snyderman Trust"), of which the reporting person is both the sole trustee and sole beneficiary.

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