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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2016-12-08</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001652535</issuerCik>
        <issuerName>ICHOR HOLDINGS, LTD.</issuerName>
        <issuerTradingSymbol>ICHR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001217210</rptOwnerCik>
            <rptOwnerName>DEB DIPANJAN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE LETTERMAN DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>BUILDING C, SUITE 410</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94129</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series A Preferred Convertible Shares</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Ordinary Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>142728221</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each Series A Preferred Convertible Share will convert into one ordinary share of the Registrant prior to the closing of the Registrant's initial public offering. There is no expiration date.</footnote>
        <footnote id="F2">Includes (a) 126,962,006.38 Series A Preferred Convertible Shares held by Francisco Partners III (Cayman), L.P. (&quot;FP III Cayman&quot;), (b) 1,466,214.62 Series A Preferred Convertible Shares held by by Francisco Partners Parallel Fund III (Cayman), L.P. (&quot;FPPF III Cayman&quot;) and (c) 14,300,000.00 Series A Preferred Convertible Shares held by by Ichor Investment Holdings, LLC (&quot;IIH LLC&quot;). Francisco Partners GP III (Cayman), L.P. (&quot;FP GP Cayman III&quot;) is the general partner of each of FP III Cayman and the manager of IIH LLC. Francisco Partners GP III Management (Cayman), Limited (&quot;FP GP III Management&quot;) is the general partner of FP GP Cayman III.</footnote>
        <footnote id="F3">(Continued From footnote 2)In those capacities, FP GP III and FP GP III Management may be deemed to share voting and dispositive power with respect to the ordinary shares owned by FP III Cayman, FPPF III Cayman and IIH LLC. The Reporting Person is a member of an investment committee of FP GP III Management and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of all shares included in clauses (a) - (c) of this footnote 2, except to the extent of his pecuniary interest.</footnote>
    </footnotes>

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

    <ownerSignature>
        <signatureName>/s/ Dipanjan Deb</signatureName>
        <signatureDate>2016-12-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
