Alkermes plc. — Director's Dealing 2013

Jul 2, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2013-07-02

Reporting Person: Pugh Gordon G (SVP, COO & CRO, Alkermes, Inc.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-07-02	Ordinary Shares	M	39480	$14.90	Acquired	68020	Direct
2013-07-02	Ordinary Shares	S	39480	$29.8225	Disposed	28540	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-07-02	Non Qualified Stock Option (Right to Buy)	$14.90	M	39480	Disposed	2014-12-17	Ordinary Shares (39480)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	5000	Indirect
Ordinary Shares	15000	Indirect

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: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $29.28 to $30.10. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F4: These options are fully vested in accordance with their terms.