Synopsys, Inc. (NASDAQ: SNPS), a world leader in semiconductor design software, announces that Chairman & Chief Executive Officer, Aart de Geus will speak at the SG Cowen 33rd Annual Technology Conference in New York City, New York on June 1, 2005 at 9:30 a.m. EDT.

This event will be broadcast live on the Internet via the Synopsys corporate website at http://www.synopsys.com/corporate/invest/invest.html on Wednesday, June 1, 2005 at 9:30 a.m. EDT (6:30 a.m. PDT). To access the live webcast presentation, please go to the website at least 10 minutes early to register and to download and install any necessary audio software. The webcast replay of the presentation can be accessed at the Synopsys corporate website approximately 1 hour following the conclusion of the live event.

About Synopsys

Synopsys, Inc. is the world leader in electronic design automation (EDA) software for semiconductor design. The company delivers technology-leading semiconductor design and verification platforms and IC manufacturing software products to the global electronics market, enabling the development and production of complex systems-on-chips (SoCs). Synopsys also provides intellectual property and design services to simplify the design process and accelerate time-to-market for its customers. Synopsys is headquartered in Mountain View, California and has offices in more than 60 locations throughout North America, Europe, Japan and Asia. Visit Synopsys online at http://www.synopsys.com/ .

NOTE: Synopsys is a registered trademark of Synopsys, Inc. All other trademarks or registered trademarks mentioned in this release are the intellectual property of their respective owners.

SOURCE: Synopsys, Inc.

CONTACT: investors, Minaxi Patel of Synopsys, Inc., +1-650-584-1901

Web site: http://www.synopsys.com/