MSTR: amended insider filing

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

    <schemaVersion>X0609</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2026-05-19</periodOfReport>

    <dateOfOriginalSubmission>2026-05-20</dateOfOriginalSubmission>

    <issuer>
        <issuerCik>0001050446</issuerCik>
        <issuerName>Strategy Inc</issuerName>
        <issuerTradingSymbol>MSTR</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001825170</rptOwnerCik>
            <rptOwnerName>Kang Andrew</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>C/O STRATEGY INC</rptOwnerStreet1>
            <rptOwnerStreet2>1850 TOWERS CRESCENT PLAZA</rptOwnerStreet2>
            <rptOwnerCity>TYSONS CORNER</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>22182</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>EVP &amp; CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>true</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-05-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>565</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>163.98</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>38707</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-05-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5032</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>165.981</value>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>33675</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The sale was effected pursuant to a Rule 10b5-1 instruction letter entered into on May 2, 2024 to satisfy the reporting person's tax withholding obligation upon the vesting of previously granted equity awards.</footnote>
        <footnote id="F2">This Amendment on Form 4/A (this &quot;Amendment&quot;) is being filed to amend the Form 4 originally filed by the reporting person on May 20, 2026 (the &quot;Original Form 4&quot;). The Original Form 4 inadvertently reported that the 5,597 shares sold on May 19, 2026 to satisfy the reporting person's tax withholding obligation upon the vesting of previously granted equity awards were executed at a single price of $165.779. This Amendment is being filed solely to correct the transaction price to reflect that the sales were executed in multiple transactions at multiple prices, and to provide the weighted average sale price and the specific price ranges as set forth in the footnote below. Original Form 4 items otherwise remain unchanged.</footnote>
        <footnote id="F3">The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $165.455 to $166.0, inclusive. The reporting person undertakes to provide to Strategy, any security holder of Strategy, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the range set forth in this footnote.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Allein Sabel, Attorney-in-Fact</signatureName>
        <signatureDate>2026-05-21</signatureDate>
    </ownerSignature>
</ownershipDocument>