Alkermes plc. - Director's Dealing 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2017-03-29

Reporting Person: Cooke Shane (President, Alkermes plc)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-03-29	Ordinary Shares	M	200	$14.60	Acquired	72148	Direct
2017-03-29	Ordinary Shares	M	1870	$16.55	Acquired	74018	Direct
2017-03-29	Ordinary Shares	S	2070	$60.00	Disposed	71948	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-03-29	Employee Stock Option (Right to Buy)	$14.60	M	200	Disposed	2021-10-05	Ordinary Shares (200)	Direct
2017-03-29	Employee Stock Option (Right to Buy)	$16.55	M	1870	Disposed	2022-05-21	Ordinary Shares (1870)	Direct

F1: This option exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F3: These options are fully vested in accordance with their terms.