Alkermes plc. — Director's Dealing 2020

Feb 24, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2020-02-20

Reporting Person: FRATES JAMES M (SVP, Alks Inc; CFO ALKS)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-02-21	Ordinary Shares	M	5825	—	Acquired	68380	Direct
2020-02-21	Ordinary Shares	F	1712	$20.24	Disposed	66668	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-02-20	Employee Stock Option (Right to Buy)	$20.43	A	102337	Acquired	2030-02-20	Ordinary Shares (102337)	Direct
2020-02-20	Restricted Stock Unit Award	$0	A	24474	Acquired		Ordinary Shares (24474)	Direct
2020-02-21	Restricted Stock Unit Award	$0	M	5825	Disposed		Ordinary Shares (5825)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	1669	Indirect
Ordinary Shares	150000	Indirect
Ordinary Shares	4000	Indirect

Footnotes

F1: Shares held by James M. Frates 2018 Grantor Retained Annuity Trust No. 2 dated May 25, 2018 (the "2018 GRAT No. 2"). The Reporting Person is a trustee and beneficiary of the 2018 GRAT No. 2 and may be deemed to hold voting and dispositive
power with regard to the reported shares held by the 2018 GRAT No. 2.

F2: Shares held by the 2019 GRAT No. 1. The Reporting Person is a trustee and beneficiary of the 2019 GRAT No. 1 and may be deemed to hold voting and dispositive power with regard to the reported shares held by the 2019 GRAT No. 1.

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

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.