Alkermes plc. — Director's Dealing 2018

Jan 30, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2018-01-26

Reporting Person: Cooke Shane (President, Alkermes plc)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-01-26	Ordinary Shares	M	1700	$16.55	Acquired	76408	Direct
2018-01-26	Ordinary Shares	S	1700	$60.0164	Disposed	74708	Direct
2018-01-29	Ordinary Shares	M	3300	$16.55	Acquired	78008	Direct
2018-01-29	Ordinary Shares	S	3300	$60.00	Disposed	74708	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-01-26	Employee Stock Option (Right to Buy)	$16.55	M	1700	Disposed	2022-05-21	Ordinary Shares (1700)	Direct
2018-01-29	Employee Stock Option (Right to Buy)	$16.55	M	3300	Disposed	2022-05-21	Ordinary Shares (3300)	Direct

Footnotes

F1: This option exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 5/19/17.

F2: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 5/19/17.

F3: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $60.00 to $60.09. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F4: These options are fully vested in accordance with their terms.