Alkermes plc. — Director's Dealing 2017

Feb 3, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2017-02-01

Reporting Person: MITCHELL PAUL J (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-02-01	Ordinary Shares	M	1500	$11.44	Acquired	9500	Direct
2017-02-01	Ordinary Shares	S	1500	$54.45	Disposed	8000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-02-01	Non Qualified Stock Option (Right to Buy)	$11.44	M	1500	Disposed	2018-10-07	Ordinary Shares (1500)	Direct

Footnotes

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.