Audio Webcasts of Recent Presentations at Investor Conferences

• Audio Webcast of 14th Annual Needham Growth Stock Conference (1/10/2012)
• Audio Webcast of Synopsys 2011 Investor & Analyst Meeting (9/28/2011)
• Presentation from Synopsys 2011 Investor & Analyst Meeting (9/28/2011)
• Audio Webcast of Presentation at Deutsche Bank Technology Conference (9/14/2011)
• Audio Webcast of Presentation at NASDAQ-OMX Investor Program (6/21/2011)
• Audio Webcast of Presentation at Bank of America Merrill Lynch Technology Conference (6/1/2011)
• Audio Webcast of Presentation at 39th Annual Cowen Technology, Media & Telecom Conference (6/2/2011)