    <SEC-DOCUMENT>0001140361-23-029077-index.html : 20230609
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    ACCESSION NUMBER:		0001140361-23-029077
    CONFORMED SUBMISSION TYPE:	DFAN14A
    PUBLIC DOCUMENT COUNT:		37
    FILED AS OF DATE:		20230609
    DATE AS OF CHANGE:		20230609

    SUBJECT COMPANY:

    	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:		DFAN14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-35299
    		FILM NUMBER:		231004642

    	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

    FILED BY:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Sarissa Capital Management LP
    		CENTRAL INDEX KEY:			0001577524
    		IRS NUMBER:				900924432
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DFAN14A

    	BUSINESS ADDRESS:
    		STREET 1:		660 STEAMBOAT ROAD
    		CITY:			GREENWICH
    		STATE:			CT
    		ZIP:			06830
    		BUSINESS PHONE:		203-302-2330

    	MAIL ADDRESS:
    		STREET 1:		660 STEAMBOAT ROAD
    		CITY:			GREENWICH
    		STATE:			CT
    		ZIP:			06830
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