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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-12-10</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>2020-12-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>86720</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>21.97</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1487840</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Consists of 43,360 shares held directly by The Prudential Insurance Company of America (PICA) and 43,360 shares held directly by Prudential Legacy Insurance Company of New Jersey (PLIC).</footnote>
        <footnote id="F2">On December 10, 2020, the reporting persons executed a joinder to a Stock Purchase Agreement to sell shares of common stock at a price of $21.97 per share, subject to potential adjustment under certain circumstances.</footnote>
        <footnote id="F3">Consists of 743,920 shares held directly by PICA and 743,920 shares held by PLIC.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>The Prudential Insurance Company of America by /s/ Ariele Cohen, Assistant Secretary</signatureName>
        <signatureDate>2020-12-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Prudential Legacy Insurance Company of New Jersey by /s/ Ariele Cohen, Assistant Secretary</signatureName>
        <signatureDate>2020-12-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0306
4
2020-12-10
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
2020-12-10
4
S
0
86720
21.97
D
1487840
D
Consists of 43,360 shares held directly by The Prudential Insurance Company of America (PICA) and 43,360 shares held directly by Prudential Legacy Insurance Company of New Jersey (PLIC).
On December 10, 2020, the reporting persons executed a joinder to a Stock Purchase Agreement to sell shares of common stock at a price of $21.97 per share, subject to potential adjustment under certain circumstances.
Consists of 743,920 shares held directly by PICA and 743,920 shares held by PLIC.
The Prudential Insurance Company of America by /s/ Ariele Cohen, Assistant Secretary
2020-12-14
Prudential Legacy Insurance Company of New Jersey by /s/ Ariele Cohen, Assistant Secretary
2020-12-14