Alkermes plc. - Director's Dealing 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2024-12-08

Reporting Person: LAURENCIN CATO T (Director)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-12-08	Ordinary Shares	M	4163	—	Acquired	23971	Direct
2024-12-08	Ordinary Shares	F	958	$31.46	Disposed	23013	Direct
2024-12-09	Ordinary Shares	M	2691	$22.52	Acquired	25704	Direct
2024-12-09	Ordinary Shares	S	2691	$31.85	Disposed	23013	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-12-08	Restricted Stock Unit Award	$	M	4163	Disposed		Ordinary Shares (4163)	Direct
2024-12-09	Non Qualified Stock Option (Right to Buy)	$22.52	M	2691	Disposed	2031-12-08	Ordinary Shares (2691)	Direct

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

F2: This option exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2023.

F3: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2023.

F4: This award is fully vested in accordance with its terms.

F5: These options are fully vested in accordance with their terms.