Alkermes plc. — Director's Dealing 2018

Mar 6, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2018-03-01

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-03-01	Ordinary Shares	M	5250	—	Acquired	51837	Direct
2018-03-01	Ordinary Shares	F	2334	$57.41	Disposed	49503	Direct
2018-03-03	Ordinary Shares	M	2813	—	Acquired	52316	Direct
2018-03-03	Ordinary Shares	F	1251	$60.05	Disposed	51065	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-03-01	Restricted Stock Unit Award	$0	M	5250	Disposed		Ordinary Shares (5250)	Direct
2018-03-03	Restricted Stock Unit Award	$0	M	2813	Disposed		Ordinary Shares (2813)	Direct

Footnotes

F1: Shares subject to the restricted stock unit award vest in equal annual installments over a four year period, commencing on 3/1/2017.

F2: This RSU award is fully vested in accordance with its terms.