<SEC-DOCUMENT>0001192482-17-000226.txt : 20170811
<SEC-HEADER>0001192482-17-000226.hdr.sgml : 20170811
<ACCEPTANCE-DATETIME>20170811173638
ACCESSION NUMBER:		0001192482-17-000226
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20170809
FILED AS OF DATE:		20170811
DATE AS OF CHANGE:		20170811

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Melincoff Gwen A
		CENTRAL INDEX KEY:			0001614890

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37372
		FILM NUMBER:		171026226

	MAIL ADDRESS:	
		STREET 1:		C/O TOBIRA THERAPEUTICS, INC.
		STREET 2:		701 GATEWAY BOULEVARD
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080

ISSUER:		

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

	BUSINESS ADDRESS:	
		STREET 1:		780 DEDHAM STREET, SUITE 800
		CITY:			CANTON
		STATE:			MA
		ZIP:			02021
		BUSINESS PHONE:		781-713-3699

	MAIL ADDRESS:	
		STREET 1:		780 DEDHAM STREET, SUITE 800
		CITY:			CANTON
		STATE:			MA
		ZIP:			02021

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COLLEGIUM PHARMACEUTICAL INC
		DATE OF NAME CHANGE:	20031020
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2017-08-09</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001267565</issuerCik>
        <issuerName>COLLEGIUM PHARMACEUTICAL, INC</issuerName>
        <issuerTradingSymbol>COLL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001614890</rptOwnerCik>
            <rptOwnerName>Melincoff Gwen A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O COLLEGIUM PHARMACEUTICAL, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>780 DEDHAM STREET, SUITE 800</rptOwnerStreet2>
            <rptOwnerCity>CANTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02021</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>No securities beneficially owned</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Paul Brannelly as Attorney-in-Fact for Gwen A. Melincoff</signatureName>
        <signatureDate>2017-08-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>poamelincoff.htm
<DESCRIPTION>POWER OF ATTORNEY
<TEXT>
<HTML><BODY><PRE>                                POWER OF ATTORNEY



 Know all by these presents, that the undersigned hereby constitutes

and appoints each of Paul Brannelly and Michael T. Heffernan, with full power

to act singly, as the undersigned's true and lawful attorney-in-fact with full

power of substitution to:



 (1)  execute for and on behalf of the undersigned, in the

undersigned's capacity as an officer and/or director and/or beneficial owner

of Collegium Pharmaceutical Inc.  (the "Company"), Forms 3, 4 and 5 in accordance

with Section 16(a) of the Securities Exchange Act of 1934, as amended and the

rules thereunder;



 (2)  do and perform any and all acts for and on behalf of the

undersigned which may be necessary or desirable to complete and execute

any such Forms 3, 4 or 5, complete and execute any amendment or amendments thereto

and timely file such forms with the United States Securities and Exchange

Commission and any stock exchange or similar authority; and



 (3)  take any other action of any type whatsoever in connection

with the foregoing which, in the opinion of such attorney-in-fact, may be of

benefit to, in the best interest of, or legally required by, the undersigned,

it being understood that the documents executed by such attorney-in-fact

on behalf of the undersigned pursuant to this Power of Attorney shall be in

such form and shall contain such terms and conditions as such attorney-in-fact

may approve in such attorney-in-fact's discretion.



 The undersigned hereby grants to the attorney-in-fact full power and

authority to do and perform any and every act and thing whatsoever requisite,

necessary or proper to be done in the exercise of any of the rights and powers

herein granted, as fully to all intents and purposes as the undersigned might

or could do if personally present, with full power of substitution or revocation,

hereby ratifying and confirming all that such attorney-in-fact, or such

attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be

done by virtue of this power of attorney and the rights and powers herein

granted.



 This power of attorney shall remain in full force and effect until

revoked by the undersigned in a signed writing delivered to the attorney-in-fact.



 The undersigned has caused this Power of Attorney

to be executed as of the 11th day of August 2017.







     /s/Gwen A. Melincoff

     Name: Gwen A. Melincoff



</PRE></BODY></HTML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
