Alkermes plc. — Director's Dealing 2016

Oct 7, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2016-10-05

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-10-05	Ordinary Shares	M	1600	—	Acquired	22034	Direct
2016-10-05	Ordinary Shares	F	520	$46.43	Disposed	21514	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-10-05	Performance Restricted Stock Units	$	M	1600	Disposed		Ordinary Shares (1600)	Direct

Footnotes

F1: Each performance restricted stock unit represented a contingent right to receive one ordinary share of Alkermes plc.

F2: This performance restricted stock unit, which was granted to the reporting person on March 3, 2014, is fully vested in accordance with its terms.