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                    <ccc>XXXXXXXX</ccc>
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            <liveTestFlag>LIVE</liveTestFlag>



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        <issuerInfo>
            <issuerCik>0001943896</issuerCik>
            <issuerName>RUBRIK, INC.</issuerName>
            <secFileNumber>001-42028</secFileNumber>
            <issuerAddress>
                <ns2:street1>3495 Deer Creek Road</ns2:street1>
                <ns2:city>Palo Alto</ns2:city>
                <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                <ns2:zipCode>94304</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(844) 478-2745</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>GREYLOCK MANAGEMENT CORPORATION</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
                <relationshipToIssuer>10% Stockholder</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>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>36418</noOfUnitsSold>
            <aggregateMarketValue>2195648.50</aggregateMarketValue>
            <noOfUnitsOutstanding>103167994</noOfUnitsOutstanding>
            <approxSaleDate>04/01/2025</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/28/2025</acquiredDate>
            <natureOfAcquisitionTransaction>Distribution from a Partnership</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>36418</amountOfSecuritiesAcquired>
            <paymentDate>03/28/2025</paymentDate>
            <natureOfPayment>Other</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>GREYLOCK MANAGEMENT CORPORATION</name>
                <address>
                    <ns2:street1>3495 Deer Creek Road</ns2:street1>
                    <ns2:city>Palo Alto</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94304</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>01/13/2025</saleDate>
            <amountOfSecuritiesSold>36189</amountOfSecuritiesSold>
            <grossProceeds>2353815.79</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>04/01/2025</noticeDate>
            <planAdoptionDates/>
            <signature>/s Adam Amero</signature>
        </noticeSignature>
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144
0002051424
XXXXXXXX
LIVE
0001943896
RUBRIK, INC.
001-42028
3495 Deer Creek Road
Palo Alto
CA
94304
(844) 478-2745
GREYLOCK MANAGEMENT CORPORATION
Director
10% Stockholder
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
36418
2195648.50
103167994
04/01/2025
NYSE
Common
03/28/2025
Distribution from a Partnership
Issuer
N
36418
03/28/2025
Other
N
GREYLOCK MANAGEMENT CORPORATION
3495 Deer Creek Road
Palo Alto
CA
94304
Common
01/13/2025
36189
2353815.79
04/01/2025
/s Adam Amero