SYNOPSYS INC — Director's Dealing 2010

Dec 21, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SYNOPSYS INC (SNPS)
CIK: 0000883241
Period of Report: 2010-12-21

Reporting Person: DE GEUS AART (Director, Chairman of the Board & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-12-21	Common Stock	M	58981	$27.1563	Acquired	541449	Direct
2010-12-21	Common Stock	S	58981	$27.25	Disposed	482468	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-12-21	Non-Qualified Stock Option (right to buy)	$27.1563	M	58981	Disposed	2011-02-28	Common Stock (58981)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	22000	Indirect
Common Stock	200767	Indirect

Footnotes

F1: Reporting person disclaims beneficial ownership by spouse

F2: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.