Synplicity Executives to Speak at the Sixth Annual Needham Growth Conference and the Sidoti & Company Emerging Growth Investor Forum

SUNNYVALE, Calif., December 22, 2003 — Synplicity Inc. (Nasdaq: SYNP), a leading supplier of software for the design and verification of semiconductors, today announced that Bernie Aronson, president and CEO of Synplicity, and Doug Miller, vice president of finance and CFO of Synplicity, are featured speakers at the sixth annual Needham Growth Conference and Sidoti & Company’s inaugural Emerging Growth Investor Forum.

Bernard Aronson will speak at the Needham Growth Conference at the New York Palace Hotel in New York City on Wednesday, January 7, 2004 and Doug Miller will speak at the Sidoti & Company Emerging Growth Investor Forum at the Ritz-Carlton Hotel in Palm Beach, Florida on Friday, January 9, 2004. A live webcast of Mr. Aronson’s presentation will be available on the investor relations page of Synplicity’s Web site at http://www.synplicity.com at 8:30 a.m. Eastern. A replay will be available for 30 days following the presentation.

About Synplicity
Synplicity Inc. (Nasdaq: SYNP) is a leading provider of software products that enable the rapid and effective design and verification of semiconductors used in networking and communications, computer and peripheral, consumer and military/aerospace electronics systems. Recognizing the company’s industry-leading position, since the year 2000 Dataquest has named Synplicity as the #1 provider of PLD synthesis tools, announcing a 54 percent market share in 2001, the last year for which data is available. Synplicity leverages its innovative logic synthesis, physical synthesis and verification software solutions to improve performance and shorten development time for complex programmable logic devices, application specific integrated circuits (ASICs), Structured ASICs, Platform ASICs and system-on-chip (SoC) integrated circuits. The company’s fast, easy-to-use products offer high quality of results, support industry-standard design languages (VHDL and Verilog) and run on popular platforms. Synplicity employs over 260 people in its 20 facilities worldwide. Synplicity is headquartered in Sunnyvale, Calif. For more information on Synplicity, visit http://www.synplicity.com

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Synplicity is a registered trademark of Synplicity Inc. All other brands or products are the trademarks or registered trademarks of their respective owners.

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

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