<SEC-DOCUMENT>0001192482-18-000251.txt : 20180529
<SEC-HEADER>0001192482-18-000251.hdr.sgml : 20180529
<ACCEPTANCE-DATETIME>20180529170254
ACCESSION NUMBER:		0001192482-18-000251
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180524
FILED AS OF DATE:		20180529
DATE AS OF CHANGE:		20180529

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Hirsch David
		CENTRAL INDEX KEY:			0001619884

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37372
		FILM NUMBER:		18865358

	MAIL ADDRESS:	
		STREET 1:		C/O LONGITUDE CAPITAL PARTNERS, LLC
		STREET 2:		800 EL CAMINO REAL, SUITE 220
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025

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>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-05-24</periodOfReport>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001619884</rptOwnerCik>
            <rptOwnerName>Hirsch David</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O LONGITUDE CAPITAL PARTNERS, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>2740 SAND HILL ROAD, 2ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-05-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2253</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>27193</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>15208</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By: Longitude Capital Associates, L.P.</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>758742</value>
                    <footnoteId id="F5"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By: Longitude Venture Partners, L.P.</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Purchase)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>24.95</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2018-05-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4506</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F6"/>
            </exerciseDate>
            <expirationDate>
                <value>2028-05-24</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4506</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4506</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Reflects the grant of restricted stock units. Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock. The restricted stock units vest on May 24, 2019, subject to the director's continued service with the issuer. The restricted stock units will be settled on such date in shares of the issuer's common stock.</footnote>
        <footnote id="F2">Includes 24,940 shares received in distributions from Longitude Venture Partners, L.P. (&quot;LVP&quot;) and Longitude Capital Associates, L.P. (&quot;LCA&quot;).</footnote>
        <footnote id="F3">Reflects 30,412 shares distributed by LCA to its limited partners.  In prior reports, the reporting person reported indirect beneficial ownership of 45,620 shares of common stock of the issuer held by LCA.</footnote>
        <footnote id="F4">Longitude Capital Partners, LLC (&quot;LCP&quot;) is the general partner of LVP and LCA. The reporting person is a member of LCP, has the power to vote and dispose of the securities of the issuer held by each of LVP and LCA, and may be deemed to have beneficial ownership of such securities. The reporting person disclaims beneficial ownership of the securities of the issuer held by LVP and LCA except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F5">Reflects 1,517,480 shares distributed by LVP to its limited partners.  In prior reports, the reporting person reported indirect beneficial ownership of 2,276,222 shares of common stock of the issuer held by LVP.</footnote>
        <footnote id="F6">The option vests and becomes exercisable on May 24, 2019, subject to the director's continued service with the issuer.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Paul Brannelly as Attorney-In-Fact For David Hirsch</signatureName>
        <signatureDate>2018-05-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
