    <SEC-DOCUMENT>0001104659-24-044247-index.html : 20240405
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    <ACCEPTANCE-DATETIME>20240405160300
    ACCESSION NUMBER:		0001104659-24-044247
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20240405
    DATE AS OF CHANGE:		20240405

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			COLLEGIUM PHARMACEUTICAL, INC
    		CENTRAL INDEX KEY:			0001267565
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		ORGANIZATION NAME:           	03 Life Sciences
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			VA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-37372
    		FILM NUMBER:		24826424

    	BUSINESS ADDRESS:
    		STREET 1:		100 TECHNOLOGY CENTER DRIVE
    		CITY:			STOUGHTON
    		STATE:			MA
    		ZIP:			02072
    		BUSINESS PHONE:		781-713-3699

    	MAIL ADDRESS:
    		STREET 1:		100 TECHNOLOGY CENTER DRIVE
    		CITY:			STOUGHTON
    		STATE:			MA
    		ZIP:			02072

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	COLLEGIUM PHARMACEUTICAL INC
    		DATE OF NAME CHANGE:	20031020
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>tm248754d4_defa14a.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: tm248754d4_defa14a.htm

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>tm248754d4_defa14aimg001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: tm248754d4_defa14aimg001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>tm248754d4_defa14aimg002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: tm248754d4_defa14aimg002.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>