<SEC-DOCUMENT>0002027929-25-000003.txt : 20251212
<SEC-HEADER>0002027929-25-000003.hdr.sgml : 20251212
<ACCEPTANCE-DATETIME>20251212160903
ACCESSION NUMBER:		0002027929-25-000003
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251210
FILED AS OF DATE:		20251212
DATE AS OF CHANGE:		20251212

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Shea Thomas Anthony
		CENTRAL INDEX KEY:			0002027929
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-42187
		FILM NUMBER:		251568176

	MAIL ADDRESS:	
		STREET 1:		C/O ONESTREAM, INC.
		STREET 2:		362 SOUTH STREET
		CITY:			ROCHESTER
		STATE:			MI
		ZIP:			48307

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			OneStream, Inc.
		CENTRAL INDEX KEY:			0001889956
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		ORGANIZATION NAME:           	06 Technology
		EIN:				873199478
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		191 N. CHESTER STREET
		CITY:			BIRMINGHAM
		STATE:			MI
		ZIP:			48009
		BUSINESS PHONE:		(248) 650-1490

	MAIL ADDRESS:	
		STREET 1:		191 N. CHESTER STREET
		CITY:			BIRMINGHAM
		STATE:			MI
		ZIP:			48009
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4-12122025_091258.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-12-10</periodOfReport>

    <issuer>
        <issuerCik>0001889956</issuerCik>
        <issuerName>OneStream, Inc.</issuerName>
        <issuerTradingSymbol>OS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002027929</rptOwnerCik>
            <rptOwnerName>Shea Thomas Anthony</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ONESTREAM, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>191 N. CHESTER STREET</rptOwnerStreet2>
            <rptOwnerCity>BIRMINGHAM</rptOwnerCity>
            <rptOwnerState>MI</rptOwnerState>
            <rptOwnerZipCode>48009</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>true</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>CEO and President</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-12-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>13805</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.38</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>469244</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares that have been withheld by the Issuer to satisfy the Reporting Person's tax withholding and remittance obligations in connection with the net settlement of restricted stock units and does not represent a sale by the Reporting Person.</footnote>
        <footnote id="F2">The shares reported include unvested restricted stock units.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Holly Koczot, attorney-in-fact</signatureName>
        <signatureDate>2025-12-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
