Alkermes plc. — Director's Dealing 2012

Sep 17, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2012-09-14

Reporting Person: BLOOM FLOYD E (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-09-14	Ordinary Shares	M	20000	$7.19	Acquired	110281	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-09-14	Non Qualified Stock Option (Right to Buy)	$7.19	M	20000	Disposed	2012-09-18	Ordinary Shares (20000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	9028	Indirect
Ordinary Shares	21066	Indirect

Footnotes

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