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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2016-11-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001432150</issuerCik>
        <issuerName>GigPeak, Inc.</issuerName>
        <issuerTradingSymbol>GIG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001451693</rptOwnerCik>
            <rptOwnerName>Katz Avi S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O GIGPEAK, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>130 BAYTECH DRIVE</rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
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                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3260</value>
                    <footnoteId id="F12"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F19"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F19"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3260</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>32601</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">8,050 Restricted Stock Units (&quot;RSUs&quot;) issued in the grant to Dr. Katz on 8/1/2013 vested on 11/1/2016 according to the vesting schedule previously reported.</footnote>
        <footnote id="F2">4,295 shares of Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with such vesting as previously reported by the Company.</footnote>
        <footnote id="F3">The closing price of the Company's common stock on 11/1/2016.</footnote>
        <footnote id="F4">19,625 RSUs issued in the grant to Dr. Katz on 2/10/2014 vested on 11/1/2016 according to the vesting schedule previously reported.</footnote>
        <footnote id="F5">10,470 shares of Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with such vesting as previously reported by the Company.</footnote>
        <footnote id="F6">28,684 RSUs issued in the grant to Dr. Katz on 3/26/2015 vested on 11/1/2016.  As previously disclosed by the Company in its Current Report on Form 8-K, as filed with the SEC on July 20, 2016, and the Form 4 filed by Dr. Katz on that date, 60,106 total unvested RSUs from this award were rescinded on July 19, 2016.  This rescission is partially reflected herein.</footnote>
        <footnote id="F7">15,303 shares of Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with such vesting as previously reported by the Company.</footnote>
        <footnote id="F8">14,907 RSUs issued in the grant to Dr. Katz on 1/5/2016 vested on 11/1/2016 according to the vesting schedule previously reported.</footnote>
        <footnote id="F9">7,953 shares of Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with such vesting as previously reported by the Company.</footnote>
        <footnote id="F10">66,876 RSUs issued in the grant to Dr. Katz on 7/19/2016 vested on 11/1/2016 according to the vesting schedule previously reported.</footnote>
        <footnote id="F11">35,679 shares of Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with such vesting as previously reported by the Company.</footnote>
        <footnote id="F12">3,260 RSUs issued in the grant to Dr. Katz on 7/19/2016 vested on 11/1/2016 according to the vesting schedule previously reported.</footnote>
        <footnote id="F13">1,740 shares of Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with such vesting as previously reported by the Company.</footnote>
        <footnote id="F14">The RSUs vest as follows: 25% vested on May 1, 2014. The remaining 75% vest in twelve quarterly installments thereafter, beginning on August 1, 2014 and ending on May 1, 2017, as previously reported.</footnote>
        <footnote id="F15">The RSUs vest as follows: 25% vested on May 1, 2015. The remaining 75% vest in twelve quarterly installments thereafter, beginning on August 1, 2015 and ending on May 1, 2018, as previously reported.</footnote>
        <footnote id="F16">The RSUs vest as follows:  25% vested on May 1, 2016. The remaining 75% vest in twelve quarterly installments thereafter, beginning on August 1, 2016 and ending on May 1, 2019, as previously reported.</footnote>
        <footnote id="F17">The RSUs vest in four quarterly installments beginning on February 1, 2016 and ending on November 1, 2016, as previously reported.</footnote>
        <footnote id="F18">The RSUs vest in six quarterly installments beginning on August 1, 2016 and ending on November 1, 2017, as previously reported.</footnote>
        <footnote id="F19">The RSUs vest in twelve quarterly installments, beginning on August 1, 2016 and ending on May 1, 2019, as previously reported.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Dr. Avi S. Katz</signatureName>
        <signatureDate>2016-11-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
