<SEC-DOCUMENT>0001441816-21-000141.txt : 20210701
<SEC-HEADER>0001441816-21-000141.hdr.sgml : 20210701
<ACCEPTANCE-DATETIME>20210701192822
ACCESSION NUMBER:		0001441816-21-000141
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210629
FILED AS OF DATE:		20210701
DATE AS OF CHANGE:		20210701

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DSOUZA  FRANCISCO
		CENTRAL INDEX KEY:			0001231715

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38240
		FILM NUMBER:		211067630

	MAIL ADDRESS:	
		STREET 1:		500 GLENPOINTE CENTRE W
		CITY:			TEANECK
		STATE:			NJ
		ZIP:			07666

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MongoDB, Inc.
		CENTRAL INDEX KEY:			0001441816
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0131

	BUSINESS ADDRESS:	
		STREET 1:		1633 BROADWAY
		STREET 2:		38TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
		BUSINESS PHONE:		866-237-8815

	MAIL ADDRESS:	
		STREET 1:		1633 BROADWAY
		STREET 2:		38TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	10GEN INC
		DATE OF NAME CHANGE:	20080801
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_162518205314193.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-06-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001441816</issuerCik>
        <issuerName>MongoDB, Inc.</issuerName>
        <issuerTradingSymbol>MDB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001231715</rptOwnerCik>
            <rptOwnerName>DSOUZA  FRANCISCO</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MONGODB, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1633 BROADWAY, 38TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-06-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>629</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3350</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-06-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>158</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>309.81</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3508</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents restricted stock units issued to the Reporting Person pursuant to the annual equity grant under the Issuer's non-employee director compensation policy. Each restricted stock unit represents a contingent right to receive one share of Class A common stock of the Issuer and has no expiration date. The shares underlying the restricted stock unit award shall vest in full on the earlier of (i) the first anniversary of the grant date and (ii) the date of the Issuer's 2022 annual stockholders' meeting, subject to the Reporting Person providing continuous service to the Issuer through such date.</footnote>
        <footnote id="F2">Represents fully vested shares issued to the Reporting Person who elected to receive stock in lieu of cash for services as a director under the Issuer's non-employee director compensation policy. The number of shares was calculated based on the 60-day volume-weighted average share price on the date of issuance and the amount of fees owed to the Reporting Person.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Sophie Hubscher, Attorney-in-Fact</signatureName>
        <signatureDate>2021-07-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
