<SEC-DOCUMENT>0001564590-20-015306-index.html : 20200403
<SEC-HEADER>0001564590-20-015306.hdr.sgml : 20200403
<ACCEPTANCE-DATETIME>20200403171727
ACCESSION NUMBER:		0001564590-20-015306
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20200403
DATE AS OF CHANGE:		20200403
EFFECTIVENESS DATE:		20200403

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Alkermes plc.
		CENTRAL INDEX KEY:			0001520262
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				981007018
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35299
		FILM NUMBER:		20774613

	BUSINESS ADDRESS:	
		STREET 1:		CONNAUGHT HOUSE
		STREET 2:		1 BURLINGTON ROAD
		CITY:			DUBLIN 4
		STATE:			L2
		ZIP:			00000
		BUSINESS PHONE:		00-353-1-772-8000

	MAIL ADDRESS:	
		STREET 1:		CONNAUGHT HOUSE
		STREET 2:		1 BURLINGTON ROAD
		CITY:			DUBLIN 4
		STATE:			L2
		ZIP:			00000

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ANTLER SCIENCE TWO PLC
		DATE OF NAME CHANGE:	20110804

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Antler Science Two Ltd
		DATE OF NAME CHANGE:	20110509
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>alks-defa14a_20200403.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: alks-defa14a_20200403.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>gxyyfstbmtfm000002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: gxyyfstbmtfm000002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>gxyyfstbmtfm000001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: gxyyfstbmtfm000001.jpg

</DOCUMENT>
</SEC-DOCUMENT>