Alkermes plc. — Director's Dealing 2017

Apr 4, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2017-04-03

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
2017-04-03	Ordinary Shares	M	15000	$15.95	Acquired	69904	Direct
2017-04-03	Ordinary Shares	S	10937	$57.4114	Disposed	58967	Direct
2017-04-03	Ordinary Shares	S	3763	$58.3544	Disposed	55204	Direct
2017-04-03	Ordinary Shares	S	300	$59.125	Disposed	54904	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-04-03	Non Qualified Stock Option (Right to Buy)	$15.95	M	15000	Disposed	2017-06-01	Ordinary Shares (15000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	36848	Indirect
Ordinary Shares	57152	Indirect

Footnotes

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

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

F3: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $57.04 to $58.03. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F4: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $58.05 to $59.01. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F5: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $59.05 to $59.18. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F6: Shares held by 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.

F7: Shares held by 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.

F8: These options are fully vested in accordance with their terms.