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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-05-23</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0002002473</issuerCik>
        <issuerName>Bowhead Specialty Holdings Inc.</issuerName>
        <issuerTradingSymbol>BOW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000351040</rptOwnerCik>
            <rptOwnerName>AMERICAN FAMILY MUTUAL INSURANCE COMPANY, S.I.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6000 AMERICAN PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MADISON</rptOwnerCity>
            <rptOwnerState>WI</rptOwnerState>
            <rptOwnerZipCode>53783</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Warrant to Purchase Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>17</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2024-05-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1614250</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2025-05-23</value>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2034-05-23</value>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1614250</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1614250</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Pursuant to a Warrant Agreement, dated May 23, 2024, with the Issuer.</footnote>
        <footnote id="F2">This assumes that the over-allotment option granted by the Issuer to the underwriters will not be exercised. To the extent it is exercised, the Warrant will be increased by a number of shares equal to 5% of such additional shares issued, up to a maximum of 1,670,721.</footnote>
        <footnote id="F3">This Warrant will vest as to 20% of the total number of shares subject to the Warrant on the first, second, third, fourth and fifth anniversaries of the vesting commencement date (05/23/2024).</footnote>
    </footnotes>

    <remarks>Troy Van Beek, the Chief Financial Officer and Treasurer of American Family Mutual Insurance Company, S.I. (AFMIC), was nominated as a director of the Issuer pursuant to the Investor Matters Agreement, dated May 23, 2024, between AFMIC and the Issuer. Accordingly, AFMIC may be deemed to be a director by deputization for purposes of Section 16 under the Securities Exchange Act of 1934, as amended.</remarks>

    <ownerSignature>
        <signatureName>American Family Mutual Insurance Company, S.I., By: /s/ Troy Van Beek, Chief Financial Officer</signatureName>
        <signatureDate>2024-05-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
