Alkermes plc. — Director's Dealing 2012

Mar 9, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2012-03-07

Reporting Person: Stejbach Mark (Chief Commercial Officer)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-03-07	Employee Stock Option (Right to Buy)	$17.30	A	100000	Acquired	2022-03-07	Common Stock (100000)	Direct

Footnotes

F1: The option becomes exercisable in equal annual installments over a four year period, at the rate of 25% per year commencing on 3/7/13.