<SEC-DOCUMENT>0001063663-26-000002.txt : 20260108
<SEC-HEADER>0001063663-26-000002.hdr.sgml : 20260108
<ACCEPTANCE-DATETIME>20260108162212
ACCESSION NUMBER:		0001063663-26-000002
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20260106
FILED AS OF DATE:		20260108
DATE AS OF CHANGE:		20260108

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MARINER JONATHAN D
		CENTRAL INDEX KEY:			0001063663
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-42187
		FILM NUMBER:		26519882

	MAIL ADDRESS:	
		STREET 1:		2200 WEST DON TYSON PARKWAY
		CITY:			SPRINGDALE
		STATE:			AR
		ZIP:			72762

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>form4-01082026_090108.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-01-06</periodOfReport>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001063663</rptOwnerCik>
            <rptOwnerName>MARINER JONATHAN D</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>false</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>1</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-01-06</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2415</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>22.66</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12671</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-01-06</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5541</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>23.59</value>
                    <footnoteId id="F4"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7130</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <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 on February 28, 2025.</footnote>
        <footnote id="F2">Represents the weighted average share price of an aggregate total of 2,415 shares sold in the price range of $22.375 to $23.275, inclusive, by the Reporting Person. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the issuer or any security holder of the issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.</footnote>
        <footnote id="F3">The shares reported include unvested restricted stock units.</footnote>
        <footnote id="F4">Represents the weighted average share price of an aggregate total of 5,541 shares sold in the price range of $23.555 to $23.635, inclusive, by the Reporting Person. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the issuer or any security holder of the issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Holly Koczot, attorney-in-fact</signatureName>
        <signatureDate>2026-01-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
