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.

2015 Key Investor Relations Events

Third Quarter 2015 Earnings, October 22, 2015
Fourth Quarter 2015 Earnings, February 4, 2016

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 2015 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. Furthermore, due to factors affecting sales of the Company’s products and services as described above, 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.

In preparing such forward-looking statements, the Company has in particular assumed an average US dollar to euro exchange rate of US$1.15 per €1.00 for the 2015 third quarter and US$1.13 per €1.00 for the full year as well as an average Japanese yen to euro exchange rate of JPY135.0 to €1.00 for the third quarter and JPY134.6 to €1.00 for the full year; however, currency values fluctuate, and the Company’s results of operations may be significantly affected by changes in exchange rates.

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 2014 Document de Référence, filed with the AMF on March 24, 2015, and also available on the Company’s website www.3ds.com.

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 annual report for the year ended December 31, 2014 included in the Company’s 2014 Document de Référence filed with the AMF on March 24, 2015.

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.

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 IFRS as well as non-IFRS) 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 "prior" period have first been recalculated using the average exchange rates of the comparable period in the current year, and then compared with the results of the comparable period in the current year.

About Dassault Systèmes

Dassault Systèmes, the 3DEXPERIENCE Company, provides business and people with virtual universes to imagine sustainable innovations. Its world-leading solutions transform the way products are designed, produced, and supported. Dassault Systèmes’ collaborative solutions foster social innovation, expanding possibilities for the virtual world to improve the real world. The group brings value to over 190,000 customers of all sizes, in all industries, in more than 140 countries. For more information, visit www.3ds.com.

CATIA, SOLIDWORKS, ENOVIA, DELMIA, SIMULIA, GEOVIA, EXALEAD, 3D VIA, 3DSWYM, BIOVIA, NETVIBES, 3DEXCITE are registered trademarks of Dassault Systèmes or its subsidiaries in the US and/or other countries.

(Tables to Follow)

TABLE OF CONTENTS

DASSAULT SYSTEMES
NON-IFRS KEY FIGURES
(unaudited; in millions of Euros, except per share data, headcount and exchange rates)

Non-IFRS key figures exclude the effects of adjusting the carrying value of acquired companies’ deferred revenue, share-based compensation expense and related social charges, amortization of acquired intangible assets, other operating income and expense, net, certain one-time financial revenue items and the income tax effects of these non-IFRS adjustments and certain one-time tax effects.

Comparable IFRS financial information and a reconciliation of the IFRS and non-IFRS measures are set forth in the separate tables within this Attachment.