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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-12-04</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001641614</issuerCik>
        <issuerName>CPI Card Group Inc.</issuerName>
        <issuerTradingSymbol>PMTS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001655148</rptOwnerCik>
            <rptOwnerName>Parallel49 Equity, ULC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>276 EAST DEERPATH ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LAKE FOREST</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60045</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001655154</rptOwnerCik>
            <rptOwnerName>Tricor Pacific Capital Partners (Fund IV) U.S., LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PARALLEL49 EQUITY</rptOwnerStreet1>
            <rptOwnerStreet2>276 EAST DEERPATH ROAD</rptOwnerStreet2>
            <rptOwnerCity>LAKE FOREST</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60045</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001655155</rptOwnerCik>
            <rptOwnerName>Tricor Pacific Capital Partners (Fund IV), LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PARALLEL49 EQUITY</rptOwnerStreet1>
            <rptOwnerStreet2>276 EAST DEERPATH ROAD</rptOwnerStreet2>
            <rptOwnerCity>LAKE FOREST</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60045</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-12-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2126056</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>13.51</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2687921</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The shares were sold pursuant to Share Purchase Agreements between Reporting Person and Purchasers dated December 4, 2025.</footnote>
        <footnote id="F2">1,336,922 shares reported on this line were sold by Tricor Pacific Capital Partners (Fund IV), LP, following which sale, Tricor Pacific Capital Partners (Fund IV), LP holds 1,690,238 shares of common stock of the Company. 789,134 shares reported on this line were sold by Tricor Pacific Capital Partners (Fund IV) US, LP, following which sale, Tricor Pacific Capital Partners (Fund IV) US, LP holds 997,683 shares of common stock of the Company. Each of Tricor Pacific Capital Partners (Fund IV), LP and Tricor Pacific Capital Partners (Fund IV) US, LP (together, the &quot;Tricor Funds&quot;) is managed by Parallel49 Equity, ULC (formerly Tricor Pacific Capital Partners (Fund IV), ULC), as the general partner.</footnote>
        <footnote id="F3">Bradley Seaman, J. Trevor Johnstone and Roderick Senft are the sole members of an investment committee of the Tricor Funds that has the power to vote or dispose of the shares held by the Tricor Funds. Each member of the investment committee expressly disclaims any beneficial ownership of any shares of common stock held by the Tricor Funds.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Parallel49 Equity, ULC By Nicholas A. Peters, Authorized Individual</signatureName>
        <signatureDate>2025-12-12</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Tricor Pacific Capital Partners (Fund IV), LP By: Parallel49 Equity, ULC, its General Partner By: Nicholas A Peters, Authorized Individual</signatureName>
        <signatureDate>2025-12-12</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Tricor Pacific Capital Partners (Fund IV) US, LP By: Parallel49 Equity, ULC, its General Partner By: Nicholas A. Peters, Authorized Individual</signatureName>
        <signatureDate>2025-12-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
