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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-12-07	Ordinary Shares	A	5500	—	Acquired	42734	Direct
2018-12-07	Ordinary Shares	F	2445	$34.01	Disposed	40289	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	4000	Indirect
Ordinary Shares	17204	Indirect
Ordinary Shares	80000	Indirect
Ordinary Shares	45000	Indirect

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.

F2: 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.

F3: 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.

F4: Shares held by the 2018 GRAT No. 2. The Reporting Person is a trustee and beneficiary of the 2018 GRAT No. 2 and may be deemed to hold voting and dispositive power with regard to the reported shares held by the 2018 GRAT No. 2.