Alkermes plc. — Director's Dealing 2018

Mar 6, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2018-03-01

Reporting Person: FRATES JAMES M (SVP, Alks Inc; CFO ALKS)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-03-01	Ordinary Shares	M	4500	—	Acquired	83882	Direct
2018-03-01	Ordinary Shares	F	1326	$57.41	Disposed	82556	Direct
2018-03-03	Ordinary Shares	M	2813	—	Acquired	85369	Direct
2018-03-03	Ordinary Shares	F	1029	$60.05	Disposed	84340	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-03-01	Restricted Stock Unit Award	$0	M	4500	Disposed		Ordinary Shares (4500)	Direct
2018-03-03	Restricted Stock Unit Award	$0	M	2813	Disposed		Ordinary Shares (2813)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	4000	Indirect
Ordinary Shares	31940	Indirect
Ordinary Shares	80000	Indirect

Footnotes

F1: Shares held by James M. Frates Grantor Retained Annuity Trust dated March 14, 2014 (the "2014 GRAT"). The Reporting Person is a trustee and beneficiary of the 2014 GRAT and may be deemed to hold voting and dispositive power with regard to the reported shares held by the 2014 GRAT.

F2: Shares held by the James M. Frates 2018 Grantor Retained Annuity Trust No. 1 dated February 22, 2018 (the "2018 GRAT No. 1"). The Reporting Person is a trustee and beneficiary of the 2018 GRAT No. 1 and may be deemed to hold voting and dispositive power with regard to the reported shares held by the 2018 GRAT No. 1.

F3: Shares subject to the restricted stock unit award vest in equal annual installments over a four year period, commencing on 3/1/2017.

F4: This RSU award is fully vested in accordance with its terms.