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

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-10-27</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001759186</issuerCik>
        <issuerName>Z Squared Inc.</issuerName>
        <issuerTradingSymbol>ZSQR</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001550967</rptOwnerCik>
            <rptOwnerName>Schadel Christopher Ryan</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>C/O Z SQUARED INC.</rptOwnerStreet1>
            <rptOwnerStreet2>550 SOUTH ANDREWS AVENUE, SUITE 700</rptOwnerStreet2>
            <rptOwnerCity>FORT LAUDERDALE</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33301</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Marketing Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-10-27</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2467</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6636</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2026-10-27</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2467</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2467</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7038</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On April 27, 2026, pursuant to Section 3(b) of the reporting person's Executive Employment Agreement, dated April 27, 2026, the issuer granted the reporting person 9,868 restricted stock units (&quot;RSUs&quot;) representing an annual bonus award with an aggregate grant-date fair market value of $150,000. The grant was previously reported on the reporting person's Form 4 filed on April 30, 2026. Each RSU represents a contingent right to receive one share of common stock upon vesting and has no expiration date. The RSUs vest in four equal quarterly installments of 2,467 RSUs over the one-year period commencing on April 27, 2026 (on each of July 27, 2026, October 27, 2026, January 27, 2027 and April 27, 2027), subject to the reporting person's continued employment with the issuer on each vesting date.</footnote>
        <footnote id="F2">Represents the second quarterly vesting of the RSUs described in footnote 1, which vested on October 27, 2026. Each RSU was settled in one share of common stock for no consideration.</footnote>
        <footnote id="F3">The number of derivative securities beneficially owned following the reported transaction includes 4,934 RSUs remaining from the April 27, 2026 grant described in footnote 1 and 2,104 RSUs remaining from the 2,806 RSUs granted to the reporting person on June 3, 2026 under the issuer's 2025 Incentive Compensation Plan as a supplemental award in respect of the annual bonus under Section 3(b) of the reporting person's Executive Employment Agreement, previously reported on the reporting person's Form 4 filed on June 8, 2026 and the reporting person's Form 4/A filed on October 2, 2026. The June 3, 2026 RSUs vest in four substantially equal quarterly installments (subject to rounding) on each of September 3, 2026, December 3, 2026, March 3, 2027 and June 3, 2027, subject to continued employment on each vesting date.</footnote>
    </footnotes>

    <remarks>The shares of common stock reported in Table I as acquired upon settlement of restricted stock units were issued under the issuer's registration statement on Form S-8 filed with the Securities and Exchange Commission on August 21, 2026.</remarks>

    <ownerSignature>
        <signatureName>/s/ Elissa Stall, as Attorney-in-Fact for Ryan Schadel</signatureName>
        <signatureDate>2026-11-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
