FOR INFORMATIONAL PURPOSES ONLY:COMPARISON OF 2002 FINANCIAL STATEMENTS UNDER FRENCH GAAP AND U.S. GAAP

FOR INFORMATIONAL PURPOSES ONLY: COMPARISON OF 2002 FINANCIAL STATEMENTS UNDER FRENCH GAAP AND U.S. GAAP

PARIS, FRANCE, June 10, 2003 – Dassault Systemes (DS) (Nasdaq: DASTY; Euronext Paris: #13065, DSY PA), a worldwide leading software developer of product lifecycle management (PLM) solutions, is providing, for informational purposes only, a comparison of financial statements prepared in accordance with French GAAP and U.S. GAAP for the year ended December 31, 2002 at the request of the French regulatory commission (COB) as previously indicated in the Company’s first quarter financial press release dated April 24, 2003.

The Company released its annual financial results, prepared in accordance with U.S. GAAP in a press release issued on February 6, 2003.

In summary, 2002 revenue was €774 million under both French and U.S. GAAP. French GAAP 2002 EPS was €0.91 per diluted share, or €0.18 lower than U.S. GAAP EPS of €1.09, with the variance primarily accounted for by the different rules regarding goodwill amortization.

In Table 1 the Company has provided a summary of the differences between DS financial statements established in U.S. GAAP and French GAAP and explanations of differences. In Tables 2 and 3, the Company has provided financial information for the year ended December 31, 2002 and at December 31, 2002 prepared in accordance with U.S. GAAP and French GAAP.