<SEC-DOCUMENT>0001213900-25-064248.txt : 20250715
<SEC-HEADER>0001213900-25-064248.hdr.sgml : 20250715
<ACCEPTANCE-DATETIME>20250715160533
ACCESSION NUMBER:		0001213900-25-064248
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250711
FILED AS OF DATE:		20250715
DATE AS OF CHANGE:		20250715

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Roberts Christopher Bruce
		CENTRAL INDEX KEY:			0001757685
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40615
		FILM NUMBER:		251124820

	MAIL ADDRESS:	
		STREET 1:		1014 PRIRY PLACE
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22101

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Quantum Computing Inc.
		CENTRAL INDEX KEY:			0001758009
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		ORGANIZATION NAME:           	06 Technology
		EIN:				824533053
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		5 MARINE VIEW PLZ, SUITE 214
		CITY:			HOBOKEN
		STATE:			NJ
		ZIP:			07030
		BUSINESS PHONE:		703-436-2161

	MAIL ADDRESS:	
		STREET 1:		5 MARINE VIEW PLZ, SUITE 214
		CITY:			HOBOKEN
		STATE:			NJ
		ZIP:			07030
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ownership.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-07-11</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001758009</issuerCik>
        <issuerName>Quantum Computing Inc.</issuerName>
        <issuerTradingSymbol>QUBT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001757685</rptOwnerCik>
            <rptOwnerName>Roberts Christopher Bruce</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5 MARINE VIEW PLAZA,</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 214</rptOwnerStreet2>
            <rptOwnerCity>HOBOKEN</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07030</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CFO and General Counsel</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Options to Purchase Shares of Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>17.43</value>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2025-07-11</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>300000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2030-07-11</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>300000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>700000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">These Options were granted to the Reporting Person on July 11, 2025, pursuant to his employment agreement and the Quantum Computing Inc. 2022 Equity and Incentive Plan. These options vest and become exercisable as follows: (i) 100,000 shall vest on the grant date or July 11, 2025; (ii) 100,000 shall vest on the one-year anniversary of the grant date or July 11, 2026; and (iii) 100,000 shall vest on the two-year anniversary of the grant date or July 11, 2027.</footnote>
        <footnote id="F2">Nasdaq closing price on July 11, 2025.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Christopher Bruce Roberts</signatureName>
        <signatureDate>2025-07-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
