Paris, France, February 10, 2011 - Dassault Systèmes (Euronext Paris: #13065, DSY.PA) reports IFRS unaudited financial results for the fourth quarter and year ended December 31, 2010. These results were reviewed by the Company’s Board of Directors on February 9, 2011.

Summary Highlights

• Reached all 2010 objectives

• 2010 revenue growth in constant currencies of 20% to €1.56 billion (IFRS) and 21% to €1.58 billion (non-IFRS)

• 2010 new licenses revenue up 30% (IFRS and non-IFRS) in constant currencies

• 2010 EPS growth of 27% to €1.82 (IFRS) and 34% to €2.50 (non-IFRS)

• Net operating cash flow of €408 million for 2010

• Strong sales channels performances and successful integration of IBM PLM

• Over 16,000 new customers in 2010