Alkermes plc. — Director's Dealing 2011

Oct 6, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2011-10-05

Reporting Person: Cooke Shane (President, Alkermes plc)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-10-05	Employee Stock Option (Right to Buy)	$14.60	A	350000	Acquired	2021-10-05	Common Stock (350000)	Direct
2011-10-05	Restricted Stock Unit Award	$0	A	50000	Acquired	2021-10-05	Common Stock (50000)	Direct

Footnotes

F1: The option becomes exercisable in equal annual installments over a four year period, at the rate of 25% per year commencing one year after the date of grant

F2: Vests in four equal annual installments beginning on the one-year anniversary of the date of grant.