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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-09-16</periodOfReport>

    <issuer>
        <issuerCik>0001639300</issuerCik>
        <issuerName>Ollie's Bargain Outlet Holdings, Inc.</issuerName>
        <issuerTradingSymbol>OLLI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001645276</rptOwnerCik>
            <rptOwnerName>McLain Kevin</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O OLLIE'S BARGAIN OUTLET HOLDINGS, INC</rptOwnerStreet1>
            <rptOwnerStreet2>6295 ALLENTOWN BOULEVARD, SUITE 1</rptOwnerStreet2>
            <rptOwnerCity>HARRISBURG</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>17112</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>SVP, Merchandising</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

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    <derivativeTable>
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            <transactionAmounts>
                <transactionShares>
                    <value>2146</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F12"/>
            </exerciseDate>
            <expirationDate>
                <value>2033-03-23</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2146</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6436</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Transactions made pursuant to an agreement adopted on June 17, 2024, in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.</footnote>
        <footnote id="F2">The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.42-99.89, inclusive. The reporting person undertakes to provide to the Issuer, any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.</footnote>
        <footnote id="F3">The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.33-100.15, inclusive. The reporting person undertakes to provide to the Issuer, any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.</footnote>
        <footnote id="F4">The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.44-100.15, inclusive. The reporting person undertakes to provide to the Issuer, any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.</footnote>
        <footnote id="F5">The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.36-100.15, inclusive. The reporting person undertakes to provide to the Issuer, any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.</footnote>
        <footnote id="F6">The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.92-100.23, inclusive. The reporting person undertakes to provide to the Issuer, any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.</footnote>
        <footnote id="F7">The price reported in column 4 is the price at which these shares were sold in a single transaction.</footnote>
        <footnote id="F8">Options vested and became exercisable in equal 25% installments on each anniversary date of the grant, March 22, 2017, subject to continued service through each applicable vesting date.  The options vested in their entirety on March 22, 2021.</footnote>
        <footnote id="F9">Options vested and became exercisable in equal 25% installments on each anniversary date of the grant, March 28, 2018, subject to continued service through each applicable vesting date.  The options vested in their entirety on March 28, 2022.</footnote>
        <footnote id="F10">Options vested and became exercisable in equal 25% installments on each anniversary date of the grant, March 24, 2020, subject to continued service through each applicable vesting date. The options vested in their entirety on March 24, 2024.</footnote>
        <footnote id="F11">Options vest and become exercisable in 25% installments on each anniversary date of the grant, March 25, 2022, subject to continued service through each applicable vesting date. The reporting person was granted 13,027 options, of which 3,257 vested on March 25, 2023? 3,257 vested on March 25, 2024? 3,256 vest on March 25, 2025; and 3,257 vest on March 25, 2026.</footnote>
        <footnote id="F12">Options vest and become exercisable in 25% installments on each anniversary date of the grant, March 23, 2023, subject to continued service through each applicable vesting date. The reporting person was granted 8,582 options, of which 2,146 vested on March 23, 2024; 2,145 vest on March 23, 2025; 2,146 vest on March 23, 2026; and 2,145 vest on March 23, 2027.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ James J. Comitale as Attorney-In-Fact</signatureName>
        <signatureDate>2024-09-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
