<SEC-DOCUMENT>0001615442-25-000005.txt : 20251121
<SEC-HEADER>0001615442-25-000005.hdr.sgml : 20251121
<ACCEPTANCE-DATETIME>20251121141226
ACCESSION NUMBER:		0001615442-25-000005
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20251120
FILED AS OF DATE:		20251121
DATE AS OF CHANGE:		20251121

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Ellow Michael
		CENTRAL INDEX KEY:			0001615442
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19807
		FILM NUMBER:		251507248

	MAIL ADDRESS:	
		STREET 1:		C/O MENTOR GRAPHICS CORPORATION
		STREET 2:		8005 SW BOECKMAN ROAD
		CITY:			WILSONVILLE
		STATE:			OR
		ZIP:			97070

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>3
<SEQUENCE>1
<FILENAME>edgardoc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2025-11-20</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001615442</rptOwnerCik>
            <rptOwnerName>Ellow Michael</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>675 ALMANOR AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SUNNYVALE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94085</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Revenue Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>By: POA pursuant Mary Lai For: Michael Ellow</signatureName>
        <signatureDate>2025-11-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ellowpoa.txt
<DESCRIPTION>EDGAR SUPPORTING DOCUMENT
<TEXT>
SYNOPSYS, INC.
POWER OF ATTORNEY

The undersigned hereby constitutes and appoints each of Janet Lee, Derek
Chien, Dipika Lakhmani, Mary Lai, and Anthony Mawla; each acting
individually, as his/her true and lawful attorney-in-fact to:

(1)	prepare, execute in the undersigned's name and on the undersigned's
behalf, and submit to the U.S. Securities and Exchange Commission
(the "SEC") a Form ID, including amendments thereto, and any other
documents necessary or appropriate to obtain codes and passwords
enabling the undersigned to make electronic filings with the SEC of
reports required by Section 16(a) of the Securities Exchange Act of 1934,
as amended, and the rules and regulations promulgated thereunder
(the "Exchange Act"), or any rule or regulation of the SEC;

(2)	act as the undersigned's account administrator to manage the
undersigned's EDGAR Next account, including creating an EDGAR Next
account for the undersigned if necessary;

(3)	execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer or director of Synopsys, Inc. (the "Company"), any
and all Initial Statements of Beneficial Ownership of Securities on Form 3,
Statements of Change of Beneficial Ownership of Securities on Form 4 and
Annual Statements of Beneficial Ownership of Securities on Form 5 (including
amendments thereto) in accordance with Section 16(a) of the Exchange Act;

(4)	execute for and on behalf of the undersigned Form 144 (including
amendments thereto), in accordance with Rule 144 under the Securities Act
of 1933, as amended, and the rules and regulations promulgated thereunder
(the "Securities Act");

(5)	execute for and on behalf of the undersigned Schedule 13D or
Schedule 13G (including amendments thereto) in accordance with
Sections 13(d) and 13(g) of the Exchange Act, and Form 13F or Form 13H
(including amendments thereto) in accordance with Sections 13(f) and
13(h) of the Exchange Act;

(6)	do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete and
execute any such form, schedule or other documentation pursuant
to the Securities Act and/or Exchange Act, including, but not limited to,
Form ID, Form 3, Form 4, Form 5, Form 144, Schedule 13D, Schedule 13G,
Form 13F or Form 13H (including any amendments thereto) (such Forms
and Schedules, "Required Documentation") and timely file such report with
the SEC and any stock exchange, stock market or similar authority; and

(7)	take any other action of any type whatsoever in connection with
the foregoing that, in the opinion of such attorney-in-fact, may be
of benefit to, in the best interest of, or legally required by, the
undersigned, it being understood that the documents executed by such
attorney-in-fact on behalf of the undersigned, pursuant to this
Power of Attorney, shall be in such form and shall contain such
terms and conditions as such attorney-in-fact may approve in his/her
discretion.

The undersigned hereby grants to such attorney-in-fact full power
and authority to do and perform all and every act and thing whatsoever
requisite, necessary, and proper to be done in the exercise of any
of the rights and powers herein granted, as fully to all intents and
purposes as the undersigned might or could do if personally present,
with full power of substitution or revocation, hereby ratifying and
confirming all that such attorney-in-fact, or his/her substitute
or substitutes, shall lawfully do or cause to be done by virtue of
this Power of Attorney and the rights and powers herein granted.
The undersigned acknowledges that no such attorney-in-fact, in serving
in such capacity at the request of the undersigned, is hereby assuming,
nor is the Company hereby assuming, any of the undersigned's
responsibilities to comply with Section 16, Sections 13(d) and 13(g)
or Sections 13(f) and 13(h) of the Exchange Act or Rule 144 under the
Securities Act.

This Power of Attorney shall supersede and revoke any Power of Attorney
previously executed with respect to any Required Documentation and
shall remain in full force and effect until the undersigned is no longer
required to file such Required Documentation, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing attorney-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney
to be executed as of November 6, 2025.

	/s/ Mike Ellow
	Mike Ellow
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
