Alkermes plc. — Director's Dealing 2018

Dec 12, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2018-12-07

Reporting Person: Gaffin David Joseph (SVP, CLO, Alkermes, Inc.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-12-07	Ordinary Shares	A	5500	—	Acquired	42138	Direct
2018-12-07	Ordinary Shares	F	1620	$34.01	Disposed	40518	Direct

Footnotes

F1: These shares were acquired by the reporting person as a result of the partial vesting of performance-vesting restricted stock units granted to the reporting person on February 17, 2017. The vesting of this portion of the performance-vesting restricted stock units was triggered by ALKS 3831 achieving the pre-specified primary efficacy endpoints in each of two phase 3 studies.