Alkermes plc. — Director's Dealing 2017

Sep 19, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2017-09-15

Reporting Person: BIBERSTEIN KATHRYN L (EVP/CAO/CCO Alks Inc; Sec ALKS)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-09-15	Ordinary Shares	M	1935	$11.74	Acquired	58824	Direct
2017-09-15	Ordinary Shares	F	435	$52.22	Disposed	58389	Direct
2017-09-15	Ordinary Shares	M	1935	$18.105	Acquired	60324	Direct
2017-09-15	Ordinary Shares	F	670	$52.22	Disposed	59654	Direct
2017-09-15	Ordinary Shares	M	1935	$16.55	Acquired	61589	Direct
2017-09-15	Ordinary Shares	F	613	$52.22	Disposed	60976	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-09-15	Employee Stock Option (Right to Buy)	$11.74	M	1935	Disposed	2020-05-17	Ordinary Shares (1935)	Direct
2017-09-15	Employee Stock Option (Right to Buy)	$18.105	M	1935	Disposed	2021-05-20	Ordinary Shares (1935)	Direct
2017-09-15	Employee Stock Option (Right to Buy)	$16.55	M	1935	Disposed	2022-05-21	Ordinary Shares (1935)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	36848	Indirect
Ordinary Shares	57152	Indirect

Footnotes

F1: Shares held by the Kathryn L. Biberstein 2015 Annuity Trust dated December 11, 2015 (the "2015 GRAT"). The Reporting Person is a trustee and beneficiary of the 2015 GRAT and may be deemed to hold voting and dispositive power with regard to the reported shares held by the 2015 GRAT.

F2: Shares held by the Kathryn L. Biberstein 2016 Annuity Trust dated December 9, 2016 (the "2016 GRAT"). The Reporting Person is a trustee and beneficiary of the 2016 GRAT and may be deemed to hold voting and dispositive power with regard to the reported shares held by the 2016 GRAT.

F3: These options are fully vested in accordance with their terms.