Alkermes plc. — Director's Dealing 2013

Dec 18, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2013-12-16

Reporting Person: Ehrich Elliot (SVP, R&D & CMO, Alkermes, Inc.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-12-16	Ordinary Shares	M	23731	$15.95	Acquired	40310	Direct
2013-12-16	Ordinary Shares	M	6269	$15.95	Acquired	46579	Direct
2013-12-16	Ordinary Shares	M	15000	$14.13	Acquired	61579	Direct
2013-12-16	Ordinary Shares	M	8136	$12.29	Acquired	69715	Direct
2013-12-16	Ordinary Shares	S	45200	$38.6939	Disposed	24515	Direct
2013-12-16	Ordinary Shares	S	7936	$39.6105	Disposed	16579	Direct
2013-12-18	Ordinary Shares	M	7718	$18.60	Acquired	24297	Direct
2013-12-18	Ordinary Shares	S	7718	$38.8404	Disposed	16579	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-12-16	Non Qualified Stock Option (Right to Buy)	$15.95	M	23731	Disposed	2017-06-01	Ordinary Shares (23731)	Direct
2013-12-16	Incentive Stock Option (Right to Buy)	$15.95	M	6269	Disposed	2017-06-01	Ordinary Shares (6269)	Direct
2013-12-16	Employee Stock Option (Right to Buy)	$14.13	M	15000	Disposed	2017-11-05	Ordinary Shares (15000)	Direct
2013-12-16	Employee Stock Option (Right to Buy)	$12.29	M	8136	Disposed	2018-05-27	Ordinary Shares (8136)	Direct
2013-12-18	Non Qualified Stock Option (Right to Buy)	$18.60	M	7718	Disposed	2015-12-09	Ordinary Shares (7718)	Direct

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 $38.26 to $39.26. 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 $39.27 to $39.95. 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 $38.82 to $38.88. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F6: These options are fully vested in accordance with their terms.