<SEC-DOCUMENT>0001415889-25-009034.txt : 20250326
<SEC-HEADER>0001415889-25-009034.hdr.sgml : 20250326
<ACCEPTANCE-DATETIME>20250326164946
ACCESSION NUMBER:		0001415889-25-009034
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250324
FILED AS OF DATE:		20250326
DATE AS OF CHANGE:		20250326

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:		25773934

	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>
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<TYPE>4
<SEQUENCE>1
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    <periodOfReport>2025-03-24</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>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
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                <value>Class A Common Stock</value>
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            <transactionDate>
                <value>2025-03-24</value>
            </transactionDate>
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                <transactionFormType>4</transactionFormType>
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                </natureOfOwnership>
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        <derivativeTransaction>
            <securityTitle>
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                <footnoteId id="F4"/>
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                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
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                <underlyingSecurityShares>
                    <value>46411</value>
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                <directOrIndirectOwnership>
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                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeHolding>
            <securityTitle>
                <value>Common Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class D Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>40051</value>
                </underlyingSecurityShares>
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                <sharesOwnedFollowingTransaction>
                    <value>40051</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
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        </derivativeHolding>
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    <footnotes>
        <footnote id="F1">The Class A Common Stock was acquired upon the conversion, at the holder's election, of Class D Common Stock held by the holder on a 1:1 basis.</footnote>
        <footnote id="F2">On March 24, 2025, the holder redeemed 46,411 Common Units of OneStream Software LLC, and 46,411 shares of the holder's Class C Common Stock were cancelled, in exchange for 46,411 shares of Class D Common Stock.</footnote>
        <footnote id="F3">The Common Units may be redeemed by the holder for shares of Class D Common Stock on a 1:1 basis, and an equal number of the holder's shares of Class C Common Stock (which have no economic rights) will be cancelled in connection
with the redemption. The Common Units have no expiration date.</footnote>
        <footnote id="F4">The Class D Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis. Each outstanding share of Class D Common Stock will automatically convert into one share of Class A Common Stock upon the earlier of (i) any transfer, whether or not for value, except for certain transfers exempted by the Issuer's amended and restated certificate of incorporation, (ii) death or incapacity (if the holder is a natural person), and (iii) the first trading day following the seventh anniversary of the Issuer's initial public offering.</footnote>
        <footnote id="F5">Held by the Jonathan D. Mariner Revocable Trust, of which the Reporting Person is a trustee.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Holly Koczot, attorney-in-fact</signatureName>
        <signatureDate>2025-03-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
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</SEC-DOCUMENT>
