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            <liveTestFlag>LIVE</liveTestFlag>



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            <issuerName>STEPSTONE GROUP INC.</issuerName>
            <secFileNumber>001-39510</secFileNumber>
            <issuerAddress>
                <ns2:street1>277 Park Avenue, 45th Floor</ns2:street1>
                <ns2:city>New York</ns2:city>
                <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                <ns2:zipCode>10172</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>2123516100</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>HART FAMILY TRUST U/T/A DTD 10/24/2013</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
            </relationshipsToIssuer>
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        <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>27697</noOfUnitsSold>
            <aggregateMarketValue>1642432.10</aggregateMarketValue>
            <noOfUnitsOutstanding>76761399</noOfUnitsOutstanding>
            <approxSaleDate>05/28/2025</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>12/02/2024</acquiredDate>
            <natureOfAcquisitionTransaction>Founders Shares</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>27697</amountOfSecuritiesAcquired>
            <paymentDate>12/02/2024</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
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            <sellerDetails>
                <name>10b5-1 Sales for HART FAMILY TRUST U/T/A DTD10/24/2013</name>
                <address>
                    <ns2:street1>277 Park Avenue, 45th Floor</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10172</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>05/23/2025</saleDate>
            <amountOfSecuritiesSold>1403</amountOfSecuritiesSold>
            <grossProceeds>84192.88</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for HART FAMILY TRUST U/T/A DTD10/24/2013</name>
                <address>
                    <ns2:street1>277 Park Avenue, 45th Floor</ns2:street1>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10172</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>05/14/2025</saleDate>
            <amountOfSecuritiesSold>900</amountOfSecuritiesSold>
            <grossProceeds>54011.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>05/28/2025</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>11/21/2024</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Scott Hart</signature>
        </noticeSignature>
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144
0001821974
XXXXXXXX
LIVE
0001796022
STEPSTONE GROUP INC.
001-39510
277 Park Avenue, 45th Floor
New York
NY
10172
2123516100
HART FAMILY TRUST U/T/A DTD 10/24/2013
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
27697
1642432.10
76761399
05/28/2025
NASDAQ
Common
12/02/2024
Founders Shares
Issuer
N
27697
12/02/2024
N/A
N
10b5-1 Sales for HART FAMILY TRUST U/T/A DTD10/24/2013
277 Park Avenue, 45th Floor
New York
NY
10172
Common
05/23/2025
1403
84192.88
10b5-1 Sales for HART FAMILY TRUST U/T/A DTD10/24/2013
277 Park Avenue, 45th Floor
New York
NY
10172
Common
05/14/2025
900
54011.00
05/28/2025
11/21/2024
/s/ Scott Hart