<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2022-12-14</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001941365</issuerCik>
        <issuerName>MasterBrand, Inc.</issuerName>
        <issuerTradingSymbol>MBC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001661135</rptOwnerCik>
            <rptOwnerName>Horton Andrean</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE MASTERBRAND CABINETS DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>JASPER</rptOwnerCity>
            <rptOwnerState>IN</rptOwnerState>
            <rptOwnerZipCode>47546</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>true</isOfficer>
            <officerTitle>EVP, CLO &amp; Secretary</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <remarks>Exhibit List: Exhibit 24: Power of Attorney</remarks>

    <ownerSignature>
        <signatureName>/s/ Andrean Horton</signatureName>
        <signatureDate>2022-12-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
