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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-10-23</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001450701</rptOwnerCik>
            <rptOwnerName>Thoma Bravo, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THOMA BRAVO, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>150 N. RIVERSIDE PLAZA, SUITE 2800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001634641</rptOwnerCik>
            <rptOwnerName>THOMA BRAVO SPECIAL OPPORTUNITIES FUND II, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THOMA BRAVO, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>150 N. RIVERSIDE PLAZA, SUITE 2800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60654</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001634649</rptOwnerCik>
            <rptOwnerName>THOMA BRAVO SPECIAL OPPORTUNITIES FUND II-A, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THOMA BRAVO, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>150 N. RIVERSIDE PLAZA, SUITE 2800</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60654</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>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2018-10-23</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>71943846</value>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>112129318</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2018-10-23</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1076505</value>
                    <footnoteId id="F6"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                    <footnoteId id="F1"/>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>71943846</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Immediately prior to the completion of the Issuer's initial public offering and following the conversion of the Issuer's Class A Common Stock into Class B Common Stock, each share of Class B Common Stock was reclassified into one share of Common Stock.</footnote>
        <footnote id="F2">Immediately prior to the completion of the Issuer's initial public offering, each outstanding share of Class A Common Stock automatically converted into a number of shares of Class B Common Stock equal to the result of the liquidation value of such share of Class A Common Stock divided by $19.00. The liquidation value for each share of Class A Common Stock was equal to $1,000 plus accrued and unpaid dividends on such share of Class A Common Stock through October 18, 2018. In addition, the shares of the Issuer's Class A Common Stock were convertible, at the option of the holder, into shares of Class B Common Stock for a specified period of time ending on November 7, 2018.</footnote>
        <footnote id="F3">Consists of 23,454,308 shares held directly by Thoma Bravo Fund XI, L.P. (&quot;TB Fund XI&quot;), 11,779,333 shares held directly by Thoma Bravo Fund XI-A, L.P. (&quot;TB Fund XI-A&quot;), 517,424 shares held directly by Thoma Bravo Executive Fund XI, L.P. (&quot;TB Exec Fund XI&quot;), 11,604,548 shares held directly by Thoma Bravo Fund XII, L.P. (&quot;TB Fund XII&quot;), 10,262,749 shares held directly by Thoma Bravo Fund XII-A, L.P. (&quot;TB Fund XII-A&quot;), 113,566 shares held directly by Thoma Bravo Executive Fund XII, L.P. (&quot;TB Exec Fund XII&quot;), 100,913 shares held directly by Thoma Bravo Executive Fund XII-A, L.P. (&quot;TB Exec Fund XII-A&quot;), 9,499,388 shares held directly by Thoma Bravo Special Opportunities Fund II, L.P. (&quot;TB SOF II&quot;) and 4,611,617 shares held directly by Thoma Bravo Special Opportunities Fund II-A, L.P. (&quot;TB SOF II-A&quot;).</footnote>
        <footnote id="F4">Consists of 36,562,330 shares held directly by TB Fund XI, 18,362,505 shares held directly by TB Fund XI-A, 806,600 shares held directly by TB Exec Fund XI, 18,086,468 shares held directly by TB Fund XII, 15,995,183 shares held directly by TB Fund XII-A, 177,001 shares held directly by TB Exec Fund XII, 157,280 shares held directly by TB Exec Fund XII-A, 14,798,030 shares held directly by TB SOF II and 7,183,921 shares held directly by TB SOF II-A.</footnote>
        <footnote id="F5">Thoma Bravo Partners XI, L.P. (&quot;TB Partners XI&quot;) is the general partner of each of TB Fund XI, TB Fund XI-A, TB Exec Fund XI, TB SOF II and TB SOF II-A. Thoma Bravo Partners XII, L.P. (&quot;TB Partners XII&quot;) is the general partner of each of TB Fund XII, TB Fund XII-A, TB Exec Fund XII and TB Exec Fund XII-A. Thoma Bravo, LLC (&quot;TB, LLC&quot;) is the general partner of each of TB Partners XI and TB Partners XII. By virtue of the relationships described in this footnote, TB, LLC may be deemed to exercise voting and dispositive power with respect to the shares held by TB Fund XI, TB Fund XI-A, TB Exec Fund XI, TB Fund XII, TB Fund XII-A, TB Exec Fund XII, TB SOF II and TB SOF II-A. Each of TB Partners XI, TB Partners XII and TB, LLC disclaims beneficial ownership of the shares owned by TB Fund XI, TB Fund XI-A, TB Exec Fund XI, TB Fund XII, TB Fund XII-A, TB Exec Fund XII, TB Exec Fund XII-A, TB SOF II and TB SOF II-A except to the extent of its pecuniary interest therein.</footnote>
        <footnote id="F6">Consists of 351,143 shares held directly by TB Fund XI, 176,353 shares held directly by TB Fund XI-A, 7,747 shares held directly by TB Exec Fund XI, 173,640 shares held directly by TB Fund XII, 153,563 shares held directly by TB Fund XII-A, 1,699 shares held directly by TB Exec Fund XII, 1,510 shares held directly by TB Exec Fund XII-A, 141,942 shares held directly by TB SOF II and 68,908 shares held directly by TB SOF II-A.</footnote>
    </footnotes>

    <remarks>The Reporting Persons are jointly filing this Form 4 pursuant to Rule 16a-3(j) under the Exchange Act. Because no more than 10 reporting persons can file any one Form 4 through the Securities and Exchange Commission's EDGAR system, TB Fund XI, TB Fund XI-A, TB Exec Fund XI, TB Fund XII, TB Fund XII-A, TB Exec Fund XII, TB Exec Fund XII-A, TB Partners XI, TB Partners XII and TB, LLC have filed a separate Form 4. Form 2 of 2.</remarks>

    <ownerSignature>
        <signatureName>Thoma Bravo Special Opportunities Fund II, L.P. by /s/ Bradley Reed, Attorney-in-Fact</signatureName>
        <signatureDate>2018-10-24</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Thoma Bravo Special Opportunities Fund II-A, L.P. by /s/ Bradley Reed, Attorney-in-Fact</signatureName>
        <signatureDate>2018-10-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
