<SEC-DOCUMENT>0001209191-21-047629.txt : 20210721
<SEC-HEADER>0001209191-21-047629.hdr.sgml : 20210721
<ACCEPTANCE-DATETIME>20210721193357
ACCESSION NUMBER:		0001209191-21-047629
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210721
FILED AS OF DATE:		20210721
DATE AS OF CHANGE:		20210721

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GPI Capital Gemini HoldCo LP
		CENTRAL INDEX KEY:			0001860862
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40601
		FILM NUMBER:		211105615

	BUSINESS ADDRESS:	
		STREET 1:		C/O GPI CAPITAL, L.P.
		STREET 2:		1345 AVENUE OF THE AMERICAS, 32ND FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10105
		BUSINESS PHONE:		646-357-3144

	MAIL ADDRESS:	
		STREET 1:		C/O GPI CAPITAL, L.P.
		STREET 2:		1345 AVENUE OF THE AMERICAS, 32ND FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10105

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Couchbase, Inc.
		CENTRAL INDEX KEY:			0001845022
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				263576987
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0131

	BUSINESS ADDRESS:	
		STREET 1:		3250 OLCOTT STREET
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95054
		BUSINESS PHONE:		6504177500

	MAIL ADDRESS:	
		STREET 1:		3250 OLCOTT STREET
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95054
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>FORM 3 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-07-21</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001845022</issuerCik>
        <issuerName>Couchbase, Inc.</issuerName>
        <issuerTradingSymbol>BASE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001860862</rptOwnerCik>
            <rptOwnerName>GPI Capital Gemini HoldCo LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1345 AVENUE OF THE AMERICAS</rptOwnerStreet1>
            <rptOwnerStreet2>FLOOR 32, SUITE C</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series G Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.00</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4096192</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Immediately prior to the completion of the Issuer's initial public offering, each share of Series G Preferred Stock is convertible into shares of the Issuer's Common Stock, par value $0.00001 per share, on an expected 1.06673317089756-for-one basis and has no expiration date.</footnote>
        <footnote id="F2">GPI Capital LLC is the sole member of GPI GP Limited, which is the general partner of GPI GP LP, which is the general partner of GPI Capital Gemini HoldCo LP, or GPI.  Aleksander J. Migon is a member of the Issuer's board of directors and Messrs. Migon, William T. Royan and Khai Ha are Managing Partners and members of the Investment Committee of GPI Capital, LLC and may be deemed to have shared voting, investment and dispositive power with respect to the shares held by GPI.  Messrs. Migon, Royan and Ha disclaim beneficial ownership of such shares except to the extent of their pecuniary interest therein.  The address for GPI is 1345 Avenue of the Americas, 32nd Floor, New York, New York 10105.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>GPI Capital Gemini HoldCo LP, By: Mateo Goldman, as Attorney in Fact</signatureName>
        <signatureDate>2021-07-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
