Alkermes plc. — Director's Dealing 2018

Mar 1, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2018-02-26

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-02-26	Ordinary Shares	M	2625	—	Acquired	80156	Direct
2018-02-26	Ordinary Shares	F	774	$58.12	Disposed	79382	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-02-26	Restricted Stock Unit Award	$0	M	2625	Disposed		Ordinary Shares (2625)	Direct

Holdings (Non-Derivative)

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

Footnotes

F1: Includes 11,421 shares received on February 22, 2018 pursuant to an annuity payment from the James M. Frates Grantor Retained Annuity Trust No. 2 dated November 25, 2015 (the "2015 GRAT No. 2") which was exempt from reporting obligations by virtue of Rule 16a-13 promulgated under the Securities Exchange Act of 1934, as amended.

F2: Excludes 80,000 shares previously owned directly which were contributed to the James M. Frates 2018 Grantor Retained Annuity Trust No. 1 dated February 22, 2018 (the "2018 GRAT No. 1") on February 23, 2018, which was exempt from reporting obligations by virtue of Rule 16a-13 promulgated under the Securities Exchange Act of 1934, as amended.

F3: 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.

F4: Shares held by 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.

F5: Shares subject to the restricted stock unit award vest in equal annual installments over a four year period, commencing on 2/26/2016.