The webcast and conference call will be archived for 30 days. Additional investor information can be accessed at http://www.3ds.com/corporate/investors/ or by calling Dassault Systèmes’ Investor Relations at 33.1.40.99.69.24.

Forward-looking information

Statements herein that are not historical facts but express expectations or objectives for the future, including but not limited to statements regarding our non-GAAP financial performance objectives, are forward-looking statements (within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended).

Such forward-looking statements are based on our management's current views and assumptions and involve known and unknown risks and uncertainties. Actual results or performances may differ materially from those in such statements due to a range of factors. In preparing such forward-looking statements, we have in particular assumed an average U.S. dollar to euro exchange rate of US$1.60 per €1.00 and an average Japanese yen to euro exchange rate of JPY160 to €1.00 for the 2008 third quarter and an average U.S. dollar to euro exchange rate of US$1.57 per €1.00 and an average Japanese yen to euro exchange rate of JPY160 to €1.00 for the full year 2008; however, currency values fluctuate, and our results of operations may be significantly affected by changes in exchange rates. We have also assumed that there will be no substantial decline in general levels of corporate spending on information technology, and that our increased responsibility for both indirect and direct PLM sales channels, and the resulting commercial and management challenges, will not prevent us from maintaining growth in revenues or cause us to incur substantial unanticipated costs and inefficiencies. Our actual results or performance may also be materially negatively affected by difficulties or adverse changes affecting our partners or our relationships with our partners, including our longstanding, strategic partner, IBM; new product developments and technological changes; errors or defects in our products; growth in market share by our competitors; and the realization of any risks related to the integration of any newly acquired company and internal reorganizations. Unfavorable changes in any of the above or other factors described in the Company’s SEC reports, including the Form 20-F for the year ended December 31, 2007, which was filed with the SEC on April 4, 2008, could materially affect the Company’s financial position or results of operations.

Non-GAAP financial information

Readers are cautioned that the supplemental non-GAAP information presented in this press release is subject to inherent limitations. It is not based on any comprehensive set of accounting rules or principles and should not be considered as a substitute for U.S. GAAP measurements. Also, our supplemental non-GAAP financial information may not be comparable to similarly titled non-GAAP measures used by other companies. Further specific limitations for individual non-GAAP measures, and the reasons for presenting non-GAAP financial information, are set forth in the Company’s annual report for the year ended December 31, 2007 on Form 20-F filed with the SEC on April 4, 2008 and in the paragraph below.

In addition to the individual non-GAAP measures described in our most recent Form 20-F, our unaudited U.S. GAAP 2008 quarterly financial statements may reflect other operating income and expense, net comprised of income and expenses related to the relocation of the Company’s corporate headquarters and restructuring expenses. In our supplemental non-GAAP financial information, we exclude other operating income and expense effects because of their infrequent or non-recurring nature. As a result, we believe that our supplemental non-GAAP financial information helps investors better understand the current trends in our operating performance. However, other operating income and expense, net are components of our income and expenses for 2008 and by excluding them the supplemental non-GAAP financial information understates the net impact to our net income in 2008. Other operating income and expense, net are generally not recurring, and we do not expect to incur other operating income and expense, net as part of our normal business on a regular basis.

To compensate for these limitations, the supplemental non-GAAP financial information should be read not in isolation, but only in conjunction with our consolidated financial statements prepared in accordance with U.S. GAAP.

The tables on pages 11 and 12 of this press release set forth our supplemental non-GAAP revenue, non-GAAP operating income, non-GAAP operating margin, non-GAAP net income and non-GAAP diluted earnings per share, which exclude the effect of adjusting the carrying value of acquired companies’ deferred revenue, the expenses for the amortization of acquired intangible assets and stock-based compensation expense (in each case, as explained in our Form 20-F), as well as other operating income and expense, net (as explained above). The tables also set forth the most comparable GAAP financial measure and a reconciliation of the GAAP and non-GAAP information.

Information in constant currencies

When the Company believes it would be helpful for understanding trends in its business, the Company provides percentage increases or decreases in its revenue (in both U.S. GAAP and on a non-GAAP basis) to eliminate the effect of changes in currency values, particularly the U.S. dollar and the Japanese yen, relative to the euro. When trend information is expressed herein "in constant currencies", the results of the "current" period have first been recalculated using the average exchange rates of the comparable period in the preceding year, and then compared with the results of the comparable period in the preceding year.