<SEC-DOCUMENT>0001013857-21-000132.txt : 20210609
<SEC-HEADER>0001013857-21-000132.hdr.sgml : 20210609
<ACCEPTANCE-DATETIME>20210609165235
ACCESSION NUMBER:		0001013857-21-000132
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210607
FILED AS OF DATE:		20210609
DATE AS OF CHANGE:		20210609

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Akgonul Rifat Kerim
		CENTRAL INDEX KEY:			0001855325

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11859
		FILM NUMBER:		211005722

	MAIL ADDRESS:	
		STREET 1:		ONE ROGERS STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PEGASYSTEMS INC
		CENTRAL INDEX KEY:			0001013857
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROCESSING & DATA PREPARATION [7374]
		IRS NUMBER:				042787865
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ONE ROGERS STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142-1209
		BUSINESS PHONE:		6173749600

	MAIL ADDRESS:	
		STREET 1:		ONE ROGERS STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142-1209
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>FORM 4
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        <issuerName>PEGASYSTEMS INC</issuerName>
        <issuerTradingSymbol>PEGA</issuerTradingSymbol>
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        </reportingOwnerId>
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            <rptOwnerStreet1>C/O PEGASYSTEMS INC.</rptOwnerStreet1>
            <rptOwnerStreet2>ONE ROGERS STREET</rptOwnerStreet2>
            <rptOwnerCity>CAMBRIDGE</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02142</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Product Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

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        <derivativeTransaction>
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                <footnoteId id="F5"/>
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                <transactionPricePerShare>
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                <underlyingSecurityTitle>
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                </underlyingSecurityTitle>
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                </sharesOwnedFollowingTransaction>
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                </transactionShares>
                <transactionPricePerShare>
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                    <value>3649</value>
                </sharesOwnedFollowingTransaction>
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    <footnotes>
        <footnote id="F1">Represents a 5% vesting on June 5, 2021, with a release date of June 7, 2021, the first business day following vesting. The original grant was 6,819 restricted stock units, with 20% vesting on March 5, 2019, and the remaining 80% vesting in equal quarterly installments over the remaining four years.</footnote>
        <footnote id="F2">Represents a 5% vesting on June 6, 2021, with a release date of June 7, 2021, the first business day following vesting. The original grant was 6,635 restricted stock units, with 20% vesting on March 6, 2020, and the remaining 80% vesting in equal quarterly installments over the remaining four years.</footnote>
        <footnote id="F3">Represents the weighted average of sale prices, ranging from $127.70 to $127.78. The individual has provided the Company, and undertakes to provide to the staff of the Security and Exchange Commission or any security holder of the Company, upon request, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F4">Does not include shares of common stock subject to unvested restricted stock units and/or options awards.</footnote>
        <footnote id="F5">Each restricted stock unit represents the right to receive, following vesting, one share of the issuer's common stock.</footnote>
        <footnote id="F6">Once vested, the shares of common stock are not subject to expiration.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Donald L. Lancaster, Attorney-in-Fact for Rifat Kerim Akgonul</signatureName>
        <signatureDate>2021-06-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
