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Filing Details

Accession Number:: 0001127602-16-069523
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2016-12-08 17:58:39
Reporting Period:: 2016-12-06

Filing Date:: 2016-12-08
Accepted Time:: 2016-12-08 17:58:39
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1520262	Alkermes Plc.	ALKS	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1235595	L Kathryn Biberstein	852 Winter St. Waltham MA 02451	Evp/Cao/Cco Alks Inc; Sec Alks	No	Yes	No	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Ordinary Shares	Acquisiton	2016-12-06	5,000	$14.38	43,687	No	4	M	Direct
Ordinary Shares	Disposition	2016-12-06	5,000	$56.24	38,687	No	4	S	Direct
Ordinary Shares	Acquisiton	2016-12-07	5,000	$14.38	43,687	No	4	M	Direct
Ordinary Shares	Disposition	2016-12-07	4,100	$56.50	39,587	No	4	S	Direct
Ordinary Shares	Disposition	2016-12-07	900	$57.11	38,687	No	4	S	Direct
Ordinary Shares	Acquisiton	2016-12-08	4,145	$14.38	42,832	No	4	M	Direct
Ordinary Shares	Disposition	2016-12-08	4,145	$55.42	38,687	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Ordinary Shares	Non Qualified Stock Option (Right to Buy)	Disposition	2016-12-06	5,000	$0.00	5,000	$14.38
Ordinary Shares	Non Qualified Stock Option (Right to Buy)	Disposition	2016-12-07	5,000	$0.00	5,000	$14.38
Ordinary Shares	Non Qualified Stock Option (Right to Buy)	Disposition	2016-12-08	4,145	$0.00	4,145	$14.38

Remaning Holdings	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
9,145	2016-12-12	No	4	M	Direct
4,145	2016-12-12	No	4	M	Direct
0	2016-12-12	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Ordinary Shares	94,000	Indirect	By 2015 GRAT

Footnotes

This option exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.
This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $55.92 to $56.56. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $55.99 to $56.97. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $57.00 to $57.29. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $55.01 to $55.64. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.
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.
These options are fully vested in accordance with their terms.