<SEC-DOCUMENT>0001202443-26-000005.txt : 20260417
<SEC-HEADER>0001202443-26-000005.hdr.sgml : 20260417
<ACCEPTANCE-DATETIME>20260417190822
ACCESSION NUMBER:		0001202443-26-000005
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20260416
FILED AS OF DATE:		20260417
DATE AS OF CHANGE:		20260417

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CHAFFIN JANICE
		CENTRAL INDEX KEY:			0001202443
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19807
		FILM NUMBER:		26872981

	MAIL ADDRESS:	
		STREET 1:		SYMANTEC CORPORATION
		STREET 2:		20330 STEVENS CREEK BLVD.
		CITY:			CUPERTINO
		STATE:			CA
		ZIP:			95014

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SYNOPSYS INC
		CENTRAL INDEX KEY:			0000883241
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		ORGANIZATION NAME:           	06 Technology
		EIN:				561546236
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		675 ALMANOR AVE
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94085
		BUSINESS PHONE:		6505845000

	MAIL ADDRESS:	
		STREET 1:		675 ALMANOR AVE
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94085
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgardoc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-04-16</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000883241</issuerCik>
        <issuerName>SYNOPSYS INC</issuerName>
        <issuerTradingSymbol>SNPS</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001202443</rptOwnerCik>
            <rptOwnerName>CHAFFIN JANICE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>675 ALMANOR AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SUNNYVALE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94085</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-04-16</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>453</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>15622</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The shares subject to the Award will vest on the date immediately preceding the first Annual Meeting following the Date of Grant, subject to the Eligible Director's continued Board service through such date.</footnote>
        <footnote id="F2">Automatic award under the Amended and Restated Equity Incentive Plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: POA pursuant Mary Lai For: Janice Chaffin</signatureName>
        <signatureDate>2026-04-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>subpoaramireztolai.txt
<DESCRIPTION>EDGAR SUPPORTING DOCUMENT
<TEXT>
SYNOPSYS, INC.
SUBSTITUTE POWER OF ATTORNEY

Pursuant to written powers of attorney (each a "Power of Attorney") by the
Individuals listed below, the undersigned, Liz Ramirez, has been constituted
and appointed the lawful attorney-in-fact and agent of the individuals, with
full power of substitution, to execute and file documents with the U.S.
Securities and Exchange Commission pursuant to Sections 13(d), 13(g), 13(f),
13(h) and 16(a) of the Securities Exchange Act of 1934, as amended, and Rule
144 of the Securities Act of 1933, as amended, with respect to equity securities
of Synopsys, Inc. and with such further powers as specified in each Power of
Attorney.

Individual			Date of Power of Attorney
Luis Borgen			March 20, 2023
Janice Chaffin			March 21, 2023
Bruce Chizen			March 21, 2023
Aart de Geus			March 20, 2023
Sassine Ghazi			March 20, 2023
Shelagh Glaser			March 20, 2023
Mercedes Johnson		March 20, 2023
Sudhindra Kankanwadi		April 3, 2023
Robert G. Painter		July 28, 2023
Jeannine Sargent		March 20, 2023
John Schwarz			March 19, 2023

In accordance with the authority granted under each Power of Attorney, including
the power of substitution, the undersigned hereby appoints Mary Lai as a
substitute attorney-in-fact, on behalf of the individuals listed above, with the
full power of substitution, to exercise and execute all of the powers granted or
conferred to the undersigned in each Power of Attorney.

For the avoidance of doubt, the foregoing appointment shall not serve as a
revocation of the powers granted to the undersigned herself in each Power of
Attorney.

This Substitute Power of Attorney shall remain in full force and effect unless
and until revoked by the undersigned.

IN WITNESS WHEREOF, the undersigned has caused this Substitute Power of Attorney
to be executed as of December 11, 2025.

/s/ Liz Ramirez
Liz Ramirez
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>3
<FILENAME>subpoafelixtomawla.txt
<DESCRIPTION>EDGAR SUPPORTING DOCUMENT
<TEXT>
SYNOPSYS, INC.
SUBSTITUTE POWER OF ATTORNEY

Pursuant to written powers of attorney (each a "Power of Attorney") by the
Individuals listed below, the undersigned, Anna Felix, has been constituted
and appointed the lawful attorney-in-fact and agent of the individuals, with
full power of substitution, to execute and file documents with the U.S.
Securities and Exchange Commission pursuant to Sections 13(d), 13(g), 13(f),
13(h) and 16(a) of the Securities Exchange Act of 1934, as amended, and Rule
144 of the Securities Act of 1933, as amended, with respect to equity securities
of Synopsys, Inc. and with such further powers as specified in each Power of
Attorney.

Individual			Date of Power of Attorney
Luis Borgen			March 20, 2023
Janice Chaffin			March 21, 2023
Bruce Chizen			March 21, 2023
Aart de Geus			March 20, 2023
Sassine Ghazi			March 20, 2023
Shelagh Glaser			March 20, 2023
Mercedes Johnson		March 20, 2023
Sudhindra Kankanwadi		April 3, 2023
Robert G. Painter		July 28, 2023
Jeannine Sargent		March 20, 2023
John Schwarz			March 19, 2023

In accordance with the authority granted under each Power of Attorney, including
the power of substitution, the undersigned hereby appoints Anthony Mawla as a
substitute attorney-in-fact, on behalf of the individuals listed above, with the
full power of substitution, to exercise and execute all of the powers granted or
conferred to the undersigned in each Power of Attorney.

For the avoidance of doubt, the foregoing appointment shall not serve as a
revocation of the powers granted to the undersigned herself in each Power of
Attorney.

This Substitute Power of Attorney shall remain in full force and effect unless
and until revoked by the undersigned.

IN WITNESS WHEREOF, the undersigned has caused this Substitute Power of Attorney
to be executed as of December 11, 2025.

/s/ Anna Felix
Anna Felix
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
