Alkermes plc. — Director's Dealing 2018

Mar 1, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2018-02-23

Reporting Person: Stejbach Mark (SVP/Chief Comm Off, Alks Inc)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-02-23	Ordinary Shares	G	1000	—	Disposed	45129	Direct
2018-02-26	Ordinary Shares	M	2625	—	Acquired	47754	Direct
2018-02-26	Ordinary Shares	F	1167	$58.12	Disposed	46587	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-02-26	Restricted Stock Unit Award	$0	M	2625	Disposed		Ordinary Shares (2625)	Direct

Footnotes

F1: Shares subject to the restricted stock unit award vest in equal annual installments over a four year period, commencing on 2/26/2016.