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        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001767034</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001441816</issuerCik>
            <issuerName>MONGODB, INC.</issuerName>
            <secFileNumber>001-38240</secFileNumber>
            <issuerAddress>
                <ns2:street1>1633 Broadway, 38th floor</ns2:street1>
                <ns2:city>New York</ns2:city>
                <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                <ns2:zipCode>10019</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>646-727-4092</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>CEDRIC PECH</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>38th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>2422</noOfUnitsSold>
            <aggregateMarketValue>905246.72</aggregateMarketValue>
            <noOfUnitsOutstanding>72177636</noOfUnitsOutstanding>
            <approxSaleDate>01/03/2024</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <acquiredDate>01/01/2024</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>2422</amountOfSecuritiesAcquired>
            <paymentDate>01/01/2024</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>CEDRIC PECH</name>
                <address>
                    <ns2:street1>1633 Broadway, 38th floor</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10019</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>01/02/2024</saleDate>
            <amountOfSecuritiesSold>360</amountOfSecuritiesSold>
            <grossProceeds>145584.61</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>CEDRIC PECH</name>
                <address>
                    <ns2:street1>1633 Broadway, 38th floor</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10019</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>11/14/2023</saleDate>
            <amountOfSecuritiesSold>1563</amountOfSecuritiesSold>
            <grossProceeds>625200.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>CEDRIC PECH</name>
                <address>
                    <ns2:street1>1633 Broadway, 38th floor</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10019</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>10/06/2023</saleDate>
            <amountOfSecuritiesSold>1212</amountOfSecuritiesSold>
            <grossProceeds>424200.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>01/03/2024</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>06/28/2023</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Cedric Pech</signature>
        </noticeSignature>
    </formData>
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144
0001767034
XXXXXXXX
LIVE
0001441816
MONGODB, INC.
001-38240
1633 Broadway, 38th floor
New York
NY
10019
646-727-4092
CEDRIC PECH
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
38th Floor
New York
NY
10004
2422
905246.72
72177636
01/03/2024
NASDAQ
COMMON
01/01/2024
Restricted Stock
ISSUER
N
2422
01/01/2024
Not Applicable
N
CEDRIC PECH
1633 Broadway, 38th floor
New York
NY
10019
Common
01/02/2024
360
145584.61
CEDRIC PECH
1633 Broadway, 38th floor
New York
NY
10019
Common
11/14/2023
1563
625200.00
CEDRIC PECH
1633 Broadway, 38th floor
New York
NY
10019
Common
10/06/2023
1212
424200.00
01/03/2024
06/28/2023
/s/ Cedric Pech