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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-05-28</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001771515</issuerCik>
        <issuerName>Grocery Outlet Holding Corp.</issuerName>
        <issuerTradingSymbol>GO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001660963</rptOwnerCik>
            <rptOwnerName>H&amp;F Corporate Investors VII, Ltd.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>415 MISSION STREET, SUITE 5700</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001779162</rptOwnerCik>
            <rptOwnerName>Hellman &amp; Friedman Investors VII, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>415 MISSION STREET, SUITE 5700</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001458222</rptOwnerCik>
            <rptOwnerName>HELLMAN &amp; FRIEDMAN CAPITAL PARTNERS VII (PARALLEL), L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>415 MISSION STREET, SUITE 5700</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001779163</rptOwnerCik>
            <rptOwnerName>H&amp;F Globe Investor GP LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>415 MISSION STREET, SUITE 5700</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001779166</rptOwnerCik>
            <rptOwnerName>H&amp;F Globe Investor LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>415 MISSION STREET, SUITE 5700</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94105</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-05-28</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>9634862</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">H&amp;F Globe Investor LP (&quot;H&amp;F Investor&quot;) and the other Reporting Persons have distributed these shares of Common Stock to their partners in accordance with their pro rata interests.</footnote>
        <footnote id="F2">Reflects securities previously directly held by H&amp;F Globe Investor LP (&quot;H&amp;F Investor&quot;). The general partner of H&amp;F Investor is H&amp;F Globe Investor GP LLC (&quot;Globe Investor GP&quot;). Hellman &amp; Friedman Capital Partners VII (Parallel), L.P. (&quot;HFCP VII&quot;) is the managing member of Globe Investor GP. Hellman &amp; Friedman Investors VII, L.P. (&quot;H&amp;F Investors VII&quot;) is the general partner of HFCP VII. H&amp;F Corporate Investors VII, Ltd. (&quot;H&amp;F VII&quot;) is the general partner of H&amp;F Investors VII.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By: /s/ Erik D. Ragatz, VP of H&amp;F CORPORATE INVESTORS VII, LTD</signatureName>
        <signatureDate>2020-06-01</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Erik D. Ragatz, VP of H&amp;F CORPORATE INVESTORS VII, LTD, GP of HELLMAN &amp; FRIEDMAN INVESTORS VII, L.P.</signatureName>
        <signatureDate>2020-06-01</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Erik D. Ragatz, VP of H&amp;F CORPORATE INVESTORS VII, LTD, GP of HELLMAN &amp; FRIEDMAN INVESTORS VII, L.P., GP of HELLMAN &amp; FRIEDMAN CAPITAL PARTNERS VII (PARALLEL), L.P.</signatureName>
        <signatureDate>2020-06-01</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Erik D. Ragatz, VP of H&amp;F CORPORATE INVESTORS VII, LTD, GP of HELLMAN &amp; FRIEDMAN INVESTORS VII, L.P., GP of HELLMAN &amp; FRIEDMAN CAPITAL PARTNERS VII (PARALLEL), L.P., managing member of H&amp;F GLOBE INVESTOR GP LLC</signatureName>
        <signatureDate>2020-06-01</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Erik D. Ragatz, VP of H&amp;F CORPORATE INVESTORS VII, LTD, GP of HELLMAN &amp; FRIEDMAN INVESTORS VII, L.P., GP of HELLMAN &amp; FRIEDMAN CAPITAL PARTNERS VII (PARALLEL), L.P., managing member of H&amp;F GLOBE INVESTOR GP LLC, GP of H&amp;F GLOBE INVESTOR LP</signatureName>
        <signatureDate>2020-06-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
