Additional investor information can be accessed at http://www.3ds.com/investors/ or by calling Dassault Systèmes’ Investor Relations at 33.1.61.62.69.24.

Key Investor Relations Events

Fourth Quarter 2017 Earnings, February 1, 2018

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 the Company’s non-IFRS financial performance objectives, are forward-looking statements.

Such forward-looking statements are based on Dassault Systèmes 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. The Company’s current outlook for 2017 takes into consideration, among other things, an uncertain global economic environment. In light of the continuing uncertainties regarding economic, business, social and geopolitical conditions at the global level, the Company’s revenue, net earnings and cash flows may grow more slowly, whether on an annual or quarterly basis. While the Company makes every effort to take into consideration this uncertain macroeconomic outlook, the Company’s business results, however, may not develop as anticipated. Further, there may be a substantial time lag between an improvement in global economic and business conditions and an upswing in the Company’s business results. The Company’s actual results or performance may also be materially negatively affected by numerous risks and uncertainties, as described in the “Risk Factors” section of the 2016 Document de Référence (Annual Report) filed with the AMF (French Financial Markets Authority) on March 22, 2017, and also available on the Company’s website www.3ds.com.

In preparing such forward-looking statements, the Company has in particular assumed an average US dollar to euro exchange rate of US$1.20 per €1.00 for the 2017 fourth quarter and US$1.14 per €1.00 for the full year 2017 as well as an average Japanese yen to euro exchange rate of JPY135 to €1.00 for the fourth quarter and JPY127.2 to €1.00 for the full year 2017 before hedging; however, currency values fluctuate, and the Company’s results of operations may be significantly affected by changes in exchange rates.

Non-IFRS Financial Information

Readers are cautioned that the supplemental non-IFRS 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 IFRS measurements. Also, the Company’s supplemental non-IFRS financial information may not be comparable to similarly titled non-IFRS measures used by other companies. Further specific limitations for individual non-IFRS measures, and the reasons for presenting non-IFRS financial information, are set forth in the Company’s 2016 Document de Référence filed with the AMF on March 22, 2017.

In the tables accompanying this press release the Company sets forth its supplemental non-IFRS figures for revenue, operating income, operating margin, net income and diluted earnings per share, which exclude the effect of adjusting the carrying value of acquired companies’ deferred revenue, share-based compensation expense and related social charges, the amortization of acquired intangible assets, other operating income and expense, net, certain one-time items included in financial revenue and other, net, and the income tax effect of the non-IFRS adjustments and certain one-time tax effects. The tables also set forth the most comparable IFRS financial measure and reconciliations of this information with non-IFRS information.

This press release constitutes the quarterly financial information required by article L.451-1-2 IV of the French Monetary and Financial Code (Code Monétaire et Financier).

Important Notices

This communication is for informational purposes only and is neither a recommendation, an offer to purchase nor a solicitation of an offer to sell securities. On October 12, 2017, Dassault Systèmes filed with the U.S. Securities Exchange Commission (the “SEC”) a tender offer statement on Schedule TO regarding the tender offer described in this communication. Holders of shares of common stock of Exa Corporation are urged to read the tender offer statement (as it may be updated and amended from time to time) filed by Dassault Systèmes because it contains important information that holders of shares of common stock of Exa Corporation should consider before making any decision regarding tendering their shares. The tender offer statement and other documents filed by Dassault Systèmes and Exa Corporation with the SEC are available for free at the SEC’s website at www.sec.gov.

Forward-looking Statements

The foregoing communication may contain forward-looking statements. These forward-looking statements involve known and unknown risks, uncertainties and other factors, many of which are outside of the control of Dassault Systèmes, are difficult to predict and may cause actual outcomes to differ significantly from any future outcome expressed or implied in the forward looking statements in this communication. While Dassault Systèmes believes that the assumptions made and the expectations reflected in this material are reasonable, no assurance can be given that such assumptions or expectations will prove to have been correct and no guarantee of whatsoever nature is assumed in this respect. The uncertainties include, inter alia, the risk of a change in general economic conditions and government and regulatory actions. These known, unknown and uncertain factors are not exhaustive, and other factors, whether known, unknown or unpredictable, could cause Dassault Systèmes’ actual results or ratings to differ materially from those assumed hereinafter. Dassault Systèmes undertakes no obligation to update or revise the forward-looking statements in this material whether as a result of new information, future events or otherwise.