For Immediate Release

Synplicity Announces Stock Repurchase Program of up to One Million Shares of its Common Stock Over Next 12 Months

SUNNYVALE, Calif., May 19, 2005 – Synplicity Inc. (Nasdaq: SYNP), a leading supplier of software for the design and verification of semiconductors, today announced its board of directors has extended its stock repurchase program to authorize the repurchase of up to one million shares of its common stock over the next 12 months. Shares will be repurchased in the open market at times and prices considered appropriate by the Company. The program is effective immediately. During the preceding 12 months, the Company purchased approximately 708,000 shares at an average price of approximately $5.62 per share under the stock repurchase program.

“This extension of our repurchase program reflects the continuing confidence our board of directors has in our business and strategy,” said Gary Meyers, president and CEO of Synplicity. “Our strong balance sheet allows us to implement this program, which we believe is in the best interests of our shareholders.”

The timing of purchases and the exact number of shares to be purchased will depend on market conditions.

About Synplicity
Synplicity® Inc. (Nasdaq: SYNP) is a leading supplier of innovative synthesis, verification and physical implementation software solutions that enable the rapid and effective design and verification of semiconductors. Synplicity’s high-quality, high-performance tools significantly reduce costs and time-to-market for FPGA, Structured/Platform ASIC and cell-based/COT ASIC designers. The company’s underlying Behavior Extracting Synthesis Technology® (BEST™), which is embedded in its logical, physical and verification tools, and has led to Synplicity’s top position in FPGA synthesis, now provides the same fast runtimes and quality of results to ASIC and COT customers. The company’s fast, easy-to-use products support industry standard design languages (VHDL and Verilog) and run on popular platforms. Synplicity employs over 280 people in its 20 facilities worldwide. Synplicity is headquartered in Sunnyvale, Calif.

Forward-Looking Statement
This news release contains forward-looking statements, including statements regarding the stock repurchase program, that are subject to certain risks and uncertainties, including, but not limited to, those associated with the unpredictability and volatility of the price of the Company's common stock and the securities of other companies in the Company's industry, the performance of and conditions in the United States and world financial markets, and the general political, economic and business conditions in the United States and elsewhere, as well as the “Risk Factors” set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2004 and its Quarterly Report on Form 10-Q for the quarter ended March 31, 2005, and the Company's other filings with the Securities and Exchange Commission. Actual results could differ materially, as a result of such factors, from those set forth in the forward-looking statements.

###

Synplicity, Synplify and Behavior Extracting Synthesis Technology are registered trademarks of Synplicity Inc. BEST is a trademark of Synplicity Inc. All other names mentioned herein are the trademarks or registered trademarks of their owners.

Synplicity Contact:
Doug Miller
Synplicity, Inc.
408-215-6000
ir@synplicity.com

Synplicity PR Contact:
Steve Gabriel
Porter Novelli
408-369-1500 x627
steve.Gabriel@porternovelli.com