Alkermes plc. - Director's Dealing 2022

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2022-02-18

Reporting Person: Gaffin David Joseph (SVP, CLO, Alkermes, Inc.)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2022-02-20	Ordinary Shares	M	7036	—	Acquired	89831	Direct
2022-02-20	Ordinary Shares	F	2061	$25.08	Disposed	87770	Direct
2022-02-21	Ordinary Shares	M	6875	—	Acquired	94645	Direct
2022-02-21	Ordinary Shares	F	2022	$25.08	Disposed	92623	Direct
2022-02-22	Ordinary Shares	M	7286	—	Acquired	99909	Direct
2022-02-22	Ordinary Shares	F	2143	$25.01	Disposed	97766	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2022-02-18	Employee Stock Option (Right to Buy)	$25.08	A	99682	Acquired	2032-02-18	Ordinary Shares (99682)	Direct
2022-02-18	Restricted Stock Unit Award	$0	A	24921	Acquired		Ordinary Shares (24921)	Direct
2022-02-20	Restricted Stock Unit Award	$0	M	7036	Disposed		Ordinary Shares (7036)	Direct
2022-02-21	Restricted Stock Unit Award	$0	M	6875	Disposed		Ordinary Shares (6875)	Direct
2022-02-22	Restricted Stock Unit Award	$0	M	7286	Disposed		Ordinary Shares (7286)	Direct

F1: Restricted stock units convert into ordinary shares on a one-for-one basis.

F2: Shares underlying the stock option vest and become exercisable in four equal annual installments commencing on 2/18/2023.

F3: Shares subject to the restricted stock unit award vest in equal annual installments over a four year period, commencing on 2/18/2023.

F4: Shares subject to the restricted stock unit award vest in equal annual installments over a four year period, commencing on 2/20/2021.

F5: Shares subject to the restricted stock unit award vest in equal annual installments over a four year period, commencing on 2/21/2020.

F6: Shares subject to the restricted stock unit award vest in equal annual installments over a four year period, commencing on 2/22/2022.