Alkermes plc. — Director's Dealing 2014

May 30, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2014-05-28

Reporting Person: Ehrich Elliot (SVP, R&D & CMO, Alkermes, Inc.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-05-28	Ordinary Shares	M	3750	—	Acquired	24742	Direct
2014-05-28	Ordinary Shares	F	1769	$45.74	Disposed	22973	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-05-28	Restricted Stock Unit Award	$0	M	3750	Disposed		Ordinary Shares (3750)	Direct

Footnotes

F1: Shares subject to the restricted stock unit award vest in equal annual installments over a four year period, commencing on 5/28/14.