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            <ccc>XXXXXXXX</ccc>
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        <liveTestFlag>LIVE</liveTestFlag>
  
  
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        <issuerName>Couchbase, Inc.</issuerName>
        <secFileNumber>001-40601</secFileNumber>
        <issuerAddress>
          <com:street1>3250 OLCOTT STREET</com:street1>
          <com:city>SANTA CLARA</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>95054</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>6504177500</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>ACCEL X STRATEGIC PARTNERS LP</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>10% Stockholder</relationshipToIssuer>
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      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Merrill Lynch, Pierce, Fenner &amp; Smith Incorporated</name>
          <address>
            <com:street1>555 California Street</com:street1>
            <com:street2>18th Floor</com:street2>
            <com:city>San Francisco</com:city>
            <com:stateOrCountry>CA</com:stateOrCountry>
            <com:zipCode>94104</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>48150</noOfUnitsSold>
        <aggregateMarketValue>852736.50</aggregateMarketValue>
        <noOfUnitsOutstanding>47074529</noOfUnitsOutstanding>
        <approxSaleDate>09/18/2023</approxSaleDate>
        <securitiesExchangeName>NASDAQ</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>01/13/2009</acquiredDate>
        <natureOfAcquisitionTransaction>Private Placements</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>48150</amountOfSecuritiesAcquired>
        <paymentDate>01/13/2009</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>09/18/2023</noticeDate>
        <signature>Richard Zamboldi</signature>
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text: 144
  0001430231
  XXXXXXXX
  LIVE
  0001845022
  Couchbase, Inc.
  001-40601
  3250 OLCOTT STREET
  SANTA CLARA
  CA
  95054
  6504177500
  ACCEL X STRATEGIC PARTNERS LP
  10% Stockholder
  Common
  Merrill Lynch, Pierce, Fenner & Smith Incorporated
  555 California Street
  18th Floor
  San Francisco
  CA
  94104
  48150
  852736.50
  47074529
  09/18/2023
  NASDAQ
  Common
  01/13/2009
  Private Placements
  Issuer
  N
  48150
  01/13/2009
  Cash
  Y
  09/18/2023
  Richard Zamboldi