-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 YS5rXhSChLw7Jhx5ojVX3A==

<SEC-DOCUMENT>0001222573-03-000014.txt : 20031126
<SEC-HEADER>0001222573-03-000014.hdr.sgml : 20031126
<ACCEPTANCE-DATETIME>20031126164517
ACCESSION NUMBER:		0001222573-03-000014
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031125
FILED AS OF DATE:		20031126

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FRISCIA JOSEPH J
		CENTRAL INDEX KEY:			0001222573

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11859
		FILM NUMBER:		031027081

	MAIL ADDRESS:	
		STREET 1:		C/O PEGASYSTEMS INC
		STREET 2:		101 MAIN 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:		101 MAIN ST
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142-1590
		BUSINESS PHONE:		6173749600

	MAIL ADDRESS:	
		STREET 1:		101 MAIN ST
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142-1590
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
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        <issuerName>PEGASYSTEMS INC</issuerName>
        <issuerTradingSymbol>PEGA</issuerTradingSymbol>
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            <rptOwnerName>FRISCIA JOSEPH J</rptOwnerName>
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            <rptOwnerStreet1>C/O PEGASYSTEMS INC</rptOwnerStreet1>
            <rptOwnerStreet2>101 MAIN 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>Executive VP &amp; GM of Apps</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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    </nonDerivativeTable>

    <derivativeTable>

        <derivativeTransaction>
            <securityTitle>
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                <value>2003-11-25</value>
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            <underlyingSecurity>
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    <ownerSignature>
        <signatureName>June M. Morris, Esq. Attorney-in-Fact for Joseph J. Friscia</signatureName>
        <signatureDate>2003-11-26</signatureDate>
    </ownerSignature>

</ownershipDocument>

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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----