Alkermes plc. — Director's Dealing 2015

Apr 17, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2015-04-15

Reporting Person: Stejbach Mark (Chief Commercial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-04-15	Ordinary Shares	M	5780	$17.30	Acquired	16544	Direct
2015-04-15	Ordinary Shares	F	1591	$62.83	Disposed	14953	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-04-15	Employee Stock Option (Right to Buy)	$17.30	M	5780	Disposed	2022-03-07	Ordinary Shares (5780)	Direct

Footnotes

F1: This option exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2: This stock swap was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F3: 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.