Alkermes plc. — Director's Dealing 2016

Apr 20, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2016-04-20

Reporting Person: BIBERSTEIN KATHRYN L (EVP/CLO/CCO Alks Inc; Sec ALKS)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-04-20	Ordinary Shares	M	12657	$20.79	Acquired	31576	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-04-20	Non Qualified Stock Option (Right to Buy)	$20.79	M	12657	Disposed	2016-05-02	Ordinary Shares (12657)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	94000	Indirect

Footnotes

F1: Shares held by the Kathryn L. Biberstein 2015 Annuity Trust dated December 11, 2015 (the "2015 GRAT"). The Reporting Person is a trustee and beneficiary of the 2015 GRAT and may be deemed to hold voting and dispositive power with regard to the reported shares held by the 2015 GRAT.

F2: These options are fully vested in accordance with their terms.