Alkermes plc. — Director's Dealing 2017

Jan 7, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2017-01-04

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-01-04	Ordinary Shares	M	7500	$18.105	Acquired	60140	Direct
2017-01-04	Ordinary Shares	S	5000	$58.8252	Disposed	55140	Direct
2017-01-04	Ordinary Shares	S	2500	$60.0088	Disposed	52640	Direct
2017-01-05	Ordinary Shares	M	400	$18.105	Acquired	53040	Direct
2017-01-05	Ordinary Shares	S	400	$60.0775	Disposed	52640	Direct
2017-01-06	Ordinary Shares	M	2100	$18.105	Acquired	54740	Direct
2017-01-06	Ordinary Shares	S	2100	$60.1173	Disposed	52640	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-01-04	Employee Stock Option (Right to Buy)	$18.105	M	7500	Disposed	2021-05-20	Ordinary Shares (7500)	Direct
2017-01-05	Employee Stock Option (Right to Buy)	$18.105	M	400	Disposed	2021-05-20	Ordinary Shares (400)	Direct
2017-01-06	Employee Stock Option (Right to Buy)	$18.105	M	2100	Disposed	2021-05-20	Ordinary Shares (2100)	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 $58.80 to $59.01. 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 $60.00 to $60.04. 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 $60.00 to $60.18. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

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F6: 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 $60.41. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F7: These options are fully vested in accordance with their terms.