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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-07-23</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001492658</issuerCik>
        <issuerName>Wright Medical Group N.V.</issuerName>
        <issuerTradingSymbol>WMGI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001714435</rptOwnerCik>
            <rptOwnerName>Asper Jason D.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1023 CHERRY ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MEMPHIS</rptOwnerCity>
            <rptOwnerState>TN</rptOwnerState>
            <rptOwnerZipCode>38117</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, Chief Digital Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares, par value EUR 0.03 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2020-07-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>18863</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>40740</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These ordinary shares will be issued over time upon vesting pursuant to restricted stock units granted under the Wright Medical Group N.V. Amended and Restated 2017 Equity and Incentive Plan.  The grant agreement contemplates that the shares will vest pro rata through the closing of the previously announced Stryker transaction, and shares unvested at closing will be cancelled.</footnote>
        <footnote id="F2">Includes 9,655 ordinary shares that will be issued over time upon vesting pursuant to restricted stock units granted under the Wright Medical Group N.V. 2017 Equity and Incentive Plan and 25,787 shares that will be issued over time upon vesting pursuant to restricted stock units granted under the Wright Medical Group N.V. Amended and Restated 2017 Equity and Incentive Plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Marija Nelson, attorney-in-fact</signatureName>
        <signatureDate>2020-07-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
