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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2015-02-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001577670</issuerCik>
        <issuerName>Ladder Capital Corp</issuerName>
        <issuerTradingSymbol>LADR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001598521</rptOwnerCik>
            <rptOwnerName>Harney Thomas</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O LADDER CAPITAL CORP</rptOwnerStreet1>
            <rptOwnerStreet2>345 PARK AVENUE, 8TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10154</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Head-Merchant Banking &amp; Cap Mk</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2015-02-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2942</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>117648</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Fifty percent of this restricted stock award is subject to specified performance-based vesting criteria, and the remaining fifty percent is subject to time-based vesting criteria. The performance-vesting restricted stock granted to the Reporting Person vests in three equal installments. The first vesting event occurred with respect to Ladder Capital Corp's performance for the year ended December 31, 2014, with subsequent vesting events occurring with respect to Ladder Capital Corp's performance for the years ended December 31, 2015 and 2016. The time-vesting restricted stock granted to the Reporting Person will vest in two installments: twenty five percent of the shares will vest on August 18, 2015 and the remaining seventy five percent will vest on February 18, 2017, subject to the Reporting Person's continued employment on the applicable vesting dates.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Michelle Wallach as Attorney-in-Fact for Thomas Harney</signatureName>
        <signatureDate>2015-02-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
