<SEC-DOCUMENT>0001209191-15-042801.txt : 20150514
<SEC-HEADER>0001209191-15-042801.hdr.sgml : 20150514
<ACCEPTANCE-DATETIME>20150514162551
ACCESSION NUMBER:		0001209191-15-042801
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20150512
FILED AS OF DATE:		20150514
DATE AS OF CHANGE:		20150514

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ENRIGHT PATRICK G
		CENTRAL INDEX KEY:			0001253886

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37372
		FILM NUMBER:		15863202

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Tammenoms Bakker Juliet
		CENTRAL INDEX KEY:			0001431159

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37372
		FILM NUMBER:		15863203

	MAIL ADDRESS:	
		STREET 1:		LONGITUDE CAPITAL MANAGEMENT CO., LLC
		STREET 2:		800 EL CAMINO REAL, SUITE 220
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Longitude Venture Partners L.P.
		CENTRAL INDEX KEY:			0001419701
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37372
		FILM NUMBER:		15863204

	BUSINESS ADDRESS:	
		STREET 1:		800 EL CAMINO REAL
		STREET 2:		SUITE 220
		CITY:			Menlo Park
		STATE:			ca
		ZIP:			94025
		BUSINESS PHONE:		650-854-5700

	MAIL ADDRESS:	
		STREET 1:		800 EL CAMINO REAL
		STREET 2:		SUITE 220
		CITY:			Menlo Park
		STATE:			ca
		ZIP:			94025

	FORMER NAME:	
		FORMER CONFORMED NAME:	Longitude Venture Partners LP
		DATE OF NAME CHANGE:	20071128

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Longitude Capital Associates, L.P.
		CENTRAL INDEX KEY:			0001430719

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37372
		FILM NUMBER:		15863205

	BUSINESS ADDRESS:	
		STREET 1:		800 EL CAMINO REAL
		STREET 2:		SUITE 220
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025
		BUSINESS PHONE:		650-854-5700

	MAIL ADDRESS:	
		STREET 1:		800 EL CAMINO REAL
		STREET 2:		SUITE 220
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Longitude Capital Partners, LLC
		CENTRAL INDEX KEY:			0001430720

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37372
		FILM NUMBER:		15863206

	BUSINESS ADDRESS:	
		STREET 1:		800 EL CAMINO REAL
		STREET 2:		SUITE 220
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025
		BUSINESS PHONE:		650-854-5700

	MAIL ADDRESS:	
		STREET 1:		800 EL CAMINO REAL
		STREET 2:		SUITE 220
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025
</SEC-HEADER>
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            <rptOwnerZipCode>94024</rptOwnerZipCode>
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            <rptOwnerStreet2></rptOwnerStreet2>
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            <rptOwnerZipCode>94024</rptOwnerZipCode>
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    </reportingOwner>

    <nonDerivativeTable>
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                <value>Series D Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2015-05-12</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>101128</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>14868</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Longitude Capital Associates, L.P.</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">All series of convertible preferred stock automatically converted into Collegium Pharmaceutical, Inc. common stock on a 1-for-6.9 basis immediately prior to the closing of the initial public offering and had no expiration date.</footnote>
        <footnote id="F2">Reflects the conversion of preferred stock into Collegium Pharmaceutical, Inc. common stock on a 1-for-6.9 basis which became effective on May 12, 2015, and includes 10,616 shares issued on May 12, 2015 to LVP, and 212 shares issued on May 12, 2015 to LCA, upon conversion of the Series D Convertible Preferred Stock in payment of accrued dividends thereon.</footnote>
        <footnote id="F3">This report is filed jointly by Longitude Capital Partners, LLC (&quot;LCP&quot;), Longitude Venture Partners, L.P. (&quot;LVP&quot;), Longitude Capital Associates, L.P. (&quot;LCA&quot;), Patrick G. Enright (&quot;Enright&quot;) and Juliet Tammenoms Bakker (&quot;Bakker&quot;), all of whom share beneficial ownership of more than 10% of the capital stock of the Issuer. LCP, as general partner of each of LVP and LCA, has the power to vote and dispose of securities held by each of them and may be deemed to have beneficial ownership of the shares owned by LVP and LCA. Enright and Bakker are each managing members of LCP and in their capacity as such, may be deemed to exercise shared voting and investment power over the shares held by the reporting persons. Each of LCP, Enright and Bakker disclaims beneficial ownership of the securities of the Issuer held by LVP and LCA except to the extent of their respective pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Longitude Capital Partners, LLC by Patrick G. Enright Managing Member</signatureName>
        <signatureDate>2015-05-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Longitude Capital Associates, L.P. by Longitude Capital Partners, LLC, General Partner, by Patrick G. Enright, Managing Member</signatureName>
        <signatureDate>2015-05-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Longitude Venture Partners, L.P. by Longitude Capital Partners, LLC, General Partner, by Patrick G. Enright, Managing Member</signatureName>
        <signatureDate>2015-05-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Juliet Tammenoms Bakker, Managing Member</signatureName>
        <signatureDate>2015-05-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Patrick G. Enright, Managing Member</signatureName>
        <signatureDate>2015-05-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
