<SEC-DOCUMENT>0001209191-19-014081.txt : 20190227
<SEC-HEADER>0001209191-19-014081.hdr.sgml : 20190227
<ACCEPTANCE-DATETIME>20190227164144
ACCESSION NUMBER:		0001209191-19-014081
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190225
FILED AS OF DATE:		20190227
DATE AS OF CHANGE:		20190227

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WEBER LARRY
		CENTRAL INDEX KEY:			0001330532

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11859
		FILM NUMBER:		19638319

	MAIL ADDRESS:	
		STREET 1:		C/O MIVA, INC.
		STREET 2:		5220 SUMMERLIN COMMONS BLVD., SUITE 500
		CITY:			FORT MYERS
		STATE:			FL
		ZIP:			33907

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
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2019-02-25</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001013857</issuerCik>
        <issuerName>PEGASYSTEMS INC</issuerName>
        <issuerTradingSymbol>PEGA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001330532</rptOwnerCik>
            <rptOwnerName>WEBER LARRY</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PEGASYSTEMS INC., 1 ROGERS STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CAMBRIDGE</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02142</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2019-02-25</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>65.99</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1583</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents the weighted average of the sale prices, ranging from $65.98 to $66.00. The individual has provided the Company, and undertakes to provide to the staff of the Securities 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="F2">Does not include shares of common stock subject to unvested restricted stock units and/or options awards.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Janet Mesrobian, Esq., Attorney-In-Fact for Larry Weber</signatureName>
        <signatureDate>2019-02-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
