<SEC-DOCUMENT>0001199719-18-000075.txt : 20181211
<SEC-HEADER>0001199719-18-000075.hdr.sgml : 20181211
<ACCEPTANCE-DATETIME>20181211140429
ACCESSION NUMBER:		0001199719-18-000075
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20181207
FILED AS OF DATE:		20181211
DATE AS OF CHANGE:		20181211

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CHAN CHI-FOON
		CENTRAL INDEX KEY:			0001249834

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19807
		FILM NUMBER:		181228442

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SYNOPSYS INC
		CENTRAL INDEX KEY:			0000883241
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				561546236
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		690 E MIDDLEFIELD RD
		CITY:			MOUNTAIN VIEW
		STATE:			CA
		ZIP:			94043
		BUSINESS PHONE:		6505845000

	MAIL ADDRESS:	
		STREET 1:		690 E MIDDLEFIELD RD
		CITY:			MOUNTAIN VIEW
		STATE:			CA
		ZIP:			94043
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
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        <issuerTradingSymbol>SNPS</issuerTradingSymbol>
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                <value>2018-12-08</value>
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    <footnotes>
        <footnote id="F1">The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.</footnote>
        <footnote id="F2">Represents a weighted average sale price per share.  These shares were sold in multiple transactions at prices ranging from $87.21 to 89.88.  The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased at each separate price within the range.</footnote>
        <footnote id="F3">These shares were retained by the Company in order to meet the tax withholding obligations of the award holder in connection with the vesting of an installment of the performance restricted stock unit award. The Compensation Committee approved the disposition of shares by the award holder and the amount retained by the Company was not in excess of the amount of the tax liability.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: POA pursuant Christina Escalante-Dutra For: Chi-Foon Chan</signatureName>
        <signatureDate>2018-12-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
