Alkermes plc. — Director's Dealing 2011

Dec 28, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2011-12-27

Reporting Person: FRATES JAMES M (SVP & CFO, Alkermes plc)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-12-27	Common Stock	M	7504	$4.77	Acquired	79625	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-12-27	Incentive Stock Option (Right to Buy)	$4.77	M	7504	Disposed	2012-07-18	Common Stock (7504)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	4000	Indirect

Footnotes

F1: These options are fully vested in accordance with their terms.