<SEC-DOCUMENT>0001728668-21-000002.txt : 20211027
<SEC-HEADER>0001728668-21-000002.hdr.sgml : 20211027
<ACCEPTANCE-DATETIME>20211027182515
ACCESSION NUMBER:		0001728668-21-000002
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20211027
FILED AS OF DATE:		20211027
DATE AS OF CHANGE:		20211027

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Waldo Robert
		CENTRAL INDEX KEY:			0001728668

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39510
		FILM NUMBER:		211354445

	MAIL ADDRESS:	
		STREET 1:		6733 S. YALE AVE.
		CITY:			TULSA,
		STATE:			OK
		ZIP:			74136

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			StepStone Group Inc.
		CENTRAL INDEX KEY:			0001796022
		STANDARD INDUSTRIAL CLASSIFICATION:	INVESTMENT ADVICE [6282]
		IRS NUMBER:				843868757
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		450 LEXINGTON AVENUE
		STREET 2:		31ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
		BUSINESS PHONE:		1-212-351-6100

	MAIL ADDRESS:	
		STREET 1:		450 LEXINGTON AVENUE
		STREET 2:		31ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-10-27</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001796022</issuerCik>
        <issuerName>StepStone Group Inc.</issuerName>
        <issuerTradingSymbol>STEP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001728668</rptOwnerCik>
            <rptOwnerName>Waldo Robert</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6733 S. YALE AVE.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>TULSA</rptOwnerCity>
            <rptOwnerState>OK</rptOwnerState>
            <rptOwnerZipCode>74136</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-10-27</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1262</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>45.3838</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5018044</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.</footnote>
        <footnote id="F2">The reporting person undertakes to provide to StepStone Group Inc., any security holder of StepStone Group Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (3) to this Form 4.</footnote>
        <footnote id="F3">The price reported in Column 4 is a weighted price. The shares were sold in multiple transactions at prices ranging from $45.11 to 45.76, inclusive.</footnote>
        <footnote id="F4">25,000 of the Class A Common Stock securities are held of record by the reporting person, who is a member of a &quot;group&quot; with ARG Private Equity, LLC, Argo Holdings, LLC (f/k/a Argonaut Holdings, L.L.C.), Sanford Energy, Inc., George Kaiser, and Steven R. Mitchell.</footnote>
        <footnote id="F5">The remaining securities are held of record by Argo Holdings, LLC. Argo Holdings, LLC is managed by ARG Private Equity, LLC. Steven R. Mitchell has a derivative interest in ARG Private Equity, LLC. Robert A. Waldo is a manager and Vice President of ARG Private Equity, LLC and has a derivative interest therein. George B. Kaiser is the sole member of ARG Private Equity, LLC. Each of Steven R. Mitchell, Robert A. Waldo and George B. Kaiser disclaims beneficial ownership of the securities reported herein for purposes of Rule 16a-1(a) under the Securities and Exchange Act of 1934, as amended, except to the extent of his pecuniary interest therein, if any.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Robert A. Waldo</signatureName>
        <signatureDate>2021-10-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
