Alkermes plc. — Director's Dealing 2016

Jun 1, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2016-05-28

Reporting Person: Pugh Gordon G (SVP, COO & CRO, Alkermes, Inc.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-05-28	Ordinary Shares	M	3000	—	Acquired	12735	Direct
2016-05-28	Ordinary Shares	F	974	$46.13	Disposed	11761	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-05-28	Restricted Stock Unit Award	$0	M	3000	Disposed		Ordinary Shares (3000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	47781	Indirect
Ordinary Shares	13101	Indirect
Ordinary Shares	6989	Indirect

Footnotes

F1: Shares held by KAS Grantor Retained Annuity Trust dated December 16, 2014 (the "GRAT"). The Reporting Person's spouse is a trustee and beneficiary of the GRAT.

F2: Shares subject to the restricted stock unit award vest in equal annual installments over a four year period, commencing on 5/28/14.