<SEC-DOCUMENT>0001209191-19-018863.txt : 20190312
<SEC-HEADER>0001209191-19-018863.hdr.sgml : 20190312
<ACCEPTANCE-DATETIME>20190312170246
ACCESSION NUMBER:		0001209191-19-018863
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190311
FILED AS OF DATE:		20190312
DATE AS OF CHANGE:		20190312

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KOUNINIS EFSTATHIOS A
		CENTRAL INDEX KEY:			0001353196

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11859
		FILM NUMBER:		19675797

	MAIL ADDRESS:	
		STREET 1:		26 GRANDVIEW DRIVE
		CITY:			DOVER
		STATE:			NH
		ZIP:			03820

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>
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<TYPE>4
<SEQUENCE>1
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                <value>Stock Options</value>
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            <conversionOrExercisePrice>
                <value>20.49</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2019-03-11</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>844</value>
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                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <exerciseDate>
                <value>2016-03-02</value>
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            <expirationDate>
                <value>2025-03-02</value>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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                <underlyingSecurityShares>
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                </underlyingSecurityShares>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3374</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
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            <conversionOrExercisePrice>
                <value>0.00</value>
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            <transactionDate>
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                <transactionFormType>4</transactionFormType>
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                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
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            <transactionAmounts>
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                    <value>93</value>
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                <transactionPricePerShare>
                    <value>0.00</value>
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                    <value>D</value>
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            <exerciseDate>
                <value>2017-09-12</value>
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                <footnoteId id="F6"/>
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                <underlyingSecurityTitle>
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                    <value>93</value>
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                <value>2019-03-12</value>
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                <transactionFormType>4</transactionFormType>
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                <value></value>
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                <transactionShares>
                    <value>956</value>
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                <transactionPricePerShare>
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                    <value>D</value>
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                <value>2026-03-09</value>
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                <sharesOwnedFollowingTransaction>
                    <value>9082</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        <derivativeTransaction>
            <securityTitle>
                <value>Stock Options</value>
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                <value>27.24</value>
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                <value>2019-03-12</value>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
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                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>314</value>
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                <transactionPricePerShare>
                    <value>0.00</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <value>2017-09-12</value>
                <footnoteId id="F8"/>
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            <expirationDate>
                <value>2026-09-12</value>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>314</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>3137</value>
                </sharesOwnedFollowingTransaction>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents 5% vesting on March 9, 2019, with a release date of March 11, 2019, the first business day following the vesting. The original grant was 6,527 restricted stock units, with 20% vesting on March 9, 2017, and the remaining 80% vesting in equal quarterly installments over the remaining four years.</footnote>
        <footnote id="F2">Represents the exercise price of the Stock Options referenced in Table II and Mr. Kouninis's tax liability, which were paid by way of withholding by the Company of shares of equal value.</footnote>
        <footnote id="F3">Represents 5% vesting on March 12, 2019. The original grant was 1,856 restricted stock units, with 20% vesting on September 12, 2017, and the remaining 80% vesting in equal quarterly installments over the remaining four years.</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>
        <footnote id="F7">Options vested 20% on March 7, 2015, with the remaining 80% vesting in equal quarterly installments over the next four years.</footnote>
        <footnote id="F8">Options vested 20% on March 2, 2016, with the remaining 80% vesting in equal quarterly installments over the next four years.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Janet Mesrobian, Esq., Attorney-in-Fact for Efstathios Kouninis</signatureName>
        <signatureDate>2019-03-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
