Alkermes plc. - Director's Dealing 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2024-02-18

Reporting Person: Hopkinson Craig C. (EVP R&D, Chief Medical Officer)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-02-18	Ordinary Shares	M	8897	—	Acquired	96834	Direct
2024-02-18	Ordinary Shares	F	3951	$32.18	Disposed	92883	Direct
2024-02-20	Ordinary Shares	M	10297	—	Acquired	103180	Direct
2024-02-20	Ordinary Shares	F	4572	$30.39	Disposed	98608	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-02-18	Restricted Stock Unit Award	$	M	8897	Disposed		Ordinary Shares (8897)	Direct
2024-02-20	Restricted Stock Unit Award	$	M	10297	Disposed		Ordinary Shares (10297)	Direct

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

F2: Shares subject to the restricted stock unit award vest in four equal annual installments, commencing on 2/18/2023.

F3: Shares subject to the restricted stock unit award vest in four equal annual installments, commencing on 2/20/2021.