<SEC-DOCUMENT>0001838400-22-000004.txt : 20220104
<SEC-HEADER>0001838400-22-000004.hdr.sgml : 20220104
<ACCEPTANCE-DATETIME>20220104212759
ACCESSION NUMBER:		0001838400-22-000004
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220101
FILED AS OF DATE:		20220104
DATE AS OF CHANGE:		20220104

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Poggenpohl Teresa
		CENTRAL INDEX KEY:			0001863018

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08729
		FILM NUMBER:		22509079

	MAIL ADDRESS:	
		STREET 1:		C/O UNISYS CORPORATION
		STREET 2:		801 LAKEVIEW DRIVE, SUITE 100
		CITY:			BLUE BELL
		STATE:			PA
		ZIP:			19422

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNISYS CORP
		CENTRAL INDEX KEY:			0000746838
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		IRS NUMBER:				380387840
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		801 LAKEVIEW DRIVE, SUITE 100
		CITY:			BLUE BELL
		STATE:			PA
		ZIP:			19422
		BUSINESS PHONE:		2159864011

	MAIL ADDRESS:	
		STREET 1:		801 LAKEVIEW DRIVE, SUITE 100
		CITY:			BLUE BELL
		STATE:			PA
		ZIP:			19422

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BURROUGHS CORP /DE/
		DATE OF NAME CHANGE:	19861204
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-01-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000746838</issuerCik>
        <issuerName>UNISYS CORP</issuerName>
        <issuerTradingSymbol>UIS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001863018</rptOwnerCik>
            <rptOwnerName>Poggenpohl Teresa</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O UNISYS CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>801 LAKEVIEW DRIVE, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>BLUE BELL</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19422</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Senior Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2022-01-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1781</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1603</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each restricted stock unit represents a contingent right to receive 0.9000 shares of Unisys Corporation common stock.</footnote>
        <footnote id="F2">Performance-based restricted stock units (&quot;PB-RSUs&quot;) granted on May 3, 2021 under the Unisys Corporation 2019 Long-Term Incentive and Equity Compensation Plan. The PB-RSUs are eligible to be earned in equal annual amounts over a three year period based on Unisys Corporation's relative total shareholder return compared to the Russell 2000 Index from January 1, 2021 through December 31, 2021, 2022 and 2023, respectively, and then such PB-RSUs would vest on May 3, 2022, 2023 and 2024, respectively. This report only relates to the PB-RSUs the reporting person earned during the 2021 performance period. All shares resulting from such earned PB-RSUs will vest on May 3, 2022.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>N. Natasha Redding, attorney-in-fact</signatureName>
        <signatureDate>2022-01-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
