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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2019-05-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001739942</issuerCik>
        <issuerName>SolarWinds Corp</issuerName>
        <issuerTradingSymbol>SWI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000729057</rptOwnerCik>
            <rptOwnerName>PRUDENTIAL INSURANCE CO OF AMERICA</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>751 BROAD STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEWARK</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07102</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001755924</rptOwnerCik>
            <rptOwnerName>PRUDENTIAL LEGACY INSURANCE CO OF NEW JERSEY</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>751 BROAD STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEWARK</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07102</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>2019-05-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>90726</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>17.415</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1574560</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Consists of 45,363 shares held directly by The Prudential Insurance Company of America (PICA) and 45,363 shares held directly by Prudential Legacy Insurance Company of New Jersey (PLIC).</footnote>
        <footnote id="F2">The proceeds per share, before expenses, to the selling stockholders of the secondary public offering is $17.415, equal to $18.00 per share, the public offering price per share of common stock, less an amount equal to the underwriting discount of $0.585 per share.</footnote>
        <footnote id="F3">Consists of 787,280 shares held directly by PICA and 787,280 shares held by PLIC.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>The Prudential Insurance Company of America by /s/ Ariele Cohen, Assistant Secretary</signatureName>
        <signatureDate>2019-05-30</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Prudential Legacy Insurance Company of New Jersey by /s/ Ariele Cohen, Assistant Secretary</signatureName>
        <signatureDate>2019-05-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0306
4
2019-05-28
0
0001739942
SolarWinds Corp
SWI
0000729057
PRUDENTIAL INSURANCE CO OF AMERICA
751 BROAD STREET
NEWARK
NJ
07102
0
0
1
0
0001755924
PRUDENTIAL LEGACY INSURANCE CO OF NEW JERSEY
751 BROAD STREET
NEWARK
NJ
07102
0
0
1
0
Common Stock
2019-05-28
4
S
0
90726
17.415
D
1574560
D
Consists of 45,363 shares held directly by The Prudential Insurance Company of America (PICA) and 45,363 shares held directly by Prudential Legacy Insurance Company of New Jersey (PLIC).
The proceeds per share, before expenses, to the selling stockholders of the secondary public offering is $17.415, equal to $18.00 per share, the public offering price per share of common stock, less an amount equal to the underwriting discount of $0.585 per share.
Consists of 787,280 shares held directly by PICA and 787,280 shares held by PLIC.
The Prudential Insurance Company of America by /s/ Ariele Cohen, Assistant Secretary
2019-05-30
Prudential Legacy Insurance Company of New Jersey by /s/ Ariele Cohen, Assistant Secretary
2019-05-30