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      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001702122</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0001943896</issuerCik>
        <issuerName>Rubrik, Inc.</issuerName>
        <secFileNumber>001-42028</secFileNumber>
        <issuerAddress>
          <com:street1>3495 DEER CREEK ROAD</com:street1>
          <com:city>PALO ALTO</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94304</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>8444782745</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Lightspeed Management Company, L.L.C.</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
          <relationshipToIssuer>10% Stockholder</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Merrill Lynch, Pierce, Fenner &amp; Smith Inc.</name>
          <address>
            <com:street1>555 California Street</com:street1>
            <com:street2>Floor 18</com:street2>
            <com:city>San Francisco</com:city>
            <com:stateOrCountry>CA</com:stateOrCountry>
            <com:zipCode>94104</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>15933</noOfUnitsSold>
        <aggregateMarketValue>481063.41</aggregateMarketValue>
        <noOfUnitsOutstanding>69118119</noOfUnitsOutstanding>
        <approxSaleDate>09/13/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Class A</securitiesClassTitle>
        <acquiredDate>01/27/2014</acquiredDate>
        <natureOfAcquisitionTransaction>Private Placement</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>15933</amountOfSecuritiesAcquired>
        <paymentDate>01/27/2014</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>09/13/2024</noticeDate>
        <signature>Andrew Moley</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
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text: 144
  0001702122
  XXXXXXXX
  LIVE
  0001943896
  Rubrik, Inc.
  001-42028
  3495 DEER CREEK ROAD
  PALO ALTO
  CA
  94304
  8444782745
  Lightspeed Management Company, L.L.C.
  Officer
  Director
  10% Stockholder
  Class A
  Merrill Lynch, Pierce, Fenner & Smith Inc.
  555 California Street
  Floor 18
  San Francisco
  CA
  94104
  15933
  481063.41
  69118119
  09/13/2024
  NYSE
  Class A
  01/27/2014
  Private Placement
  Issuer
  N
  15933
  01/27/2014
  Cash
  Y
  09/13/2024
  Andrew Moley