Alkermes plc. — Director's Dealing 2013

Aug 14, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2013-08-12

Reporting Person: LANDINE MICHAEL J (SVP, Corp Dev., Alkermes, Inc.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-08-12	Ordinary Shares	M	1500	$14.57	Acquired	120446	Direct
2013-08-12	Ordinary Shares	S	1500	$33.89	Disposed	118946	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-08-12	Non Qualified Stock Option (Right to Buy)	$14.57	M	1500	Disposed	2013-10-17	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.