PARIS, France, July 26, 2005 - Dassault Systèmes (DS) (Nasdaq: DASTY; Euronext Paris: #13065, DSY.PA), a worldwide leading software developer of 3D and Product Lifecycle Management (PLM) solutions, reported financial results for the second quarter and first half ended June 30, 2005.

Bernard Charlès, President and Chief Executive Officer, commented, "The second quarter was a period of very solid performance for Dassault Systèmes with revenue growth of 18% in U.S. dollars. Both revenue and earnings came in above our objectives on strong growth in our V5 PLM and Mainstream 3D businesses, continuing our first quarter performance trends. The Americas had a phenomenal quarter, with sales up 41% in constant currencies, and in Europe, we experienced very good growth particularly in light of the overall economic climate. SolidWorks continued to deliver strong results on excellent execution as well as very positive secular dynamics within its market segment. Based upon our second quarter performance and our more favorable outlook for the second half of this year we are raising our full year objectives for revenue and earnings growth."

Thibault de Tersant, Executive Vice President and CFO, stated, "Our financial results clearly demonstrate that we have been making the appropriate investments from a strategic, technological and sales channel perspective to increase our growth and extend further our market leadership. Today, we are taking further initiatives, with our long-standing partner IBM, designed to accelerate PLM growth within the SMB market. Together, we see the opportunity to capture significantly greater market share among small and medium-sized companies within the PLM market by improving organizational efficiency and providing additional support to IBM Business Partners. Therefore, we have decided jointly with IBM to expand Dassault Systèmes' successful experience as PLM SMB channel manager in France to a number of new countries."

Second Quarter Financial Results

Second Quarter Financial and Business Highlights

• Strong second quarter performance with revenue and earning above DS objectives
• Total revenue €217.3 million, up 13% as reported and 15% in constant currencies (up 18% in U.S. dollars)
• Software revenue €180.9 million, up 14% as reported and 16% in constant currencies
• Process-centric revenue up 10% as reported and 12% in constant currencies
• PDM revenue up 13% as reported and 15% in constant currencies
• SolidWorks revenue up 26% as reported (up 32% in U.S. dollars)
• EPS €0.32 on U.S. GAAP basis and EPS up 6% to €0.33 excluding acquisition cost
• Raising revenue and EPS objectives for 2005

Revenue

In the second quarter of 2005 total revenue was €217.3 million, representing an increase of 13% as reported and 15% in constant currencies. Strong growth in software revenue drove the year-over-year increase in total revenue. In the 2004 second quarter total revenue was €192.5 million.

Specifically, in the 2005 second quarter, software revenue increased 14% as reported and 16% in constant currencies. Software revenue totaled €180.9 million in the recently completed quarter, compared to €158.9 million in the second quarter of 2004. Recurring licenses revenue represented 51% of total software revenue in the second quarter. Service and other revenue increased 8% as reported (11% in constant currencies) to €36.4 million in the second quarter of 2005, compared to €33.6 million in the 2004 second quarter. New CATIA and SolidWorks seats licensed in the second quarter of 2005 increased 20% to 17,755 seats, up from 14,767 seats in the second quarter of 2004.

From a geographic perspective, revenue in the Americas increased 35% as reported and 41% on a constant currency basis, reflecting significant year-over-year growth in software revenue across all DS brands. In Europe, revenue increased 18% in comparison to the second quarter of 2004 on strong growth in software and services. And in Asia, revenues decreased 16% as reported and 14% in constant currencies during the second quarter of 2005, reflecting lower sales in Japan, a market which accounts for a large portion of revenues in the region.

In the 2005 second quarter Process-centric revenue increased 10% as reported and 12% in constant currencies on strong growth of design and PDM applications. Process-centric revenue, including PDM revenue, totaled €170.7 million in the second quarter of 2005, compared to €155.5 million in the year-ago period. In the 2005 second quarter PDM revenue totaled €25.5 million, compared to €22.5 million in the 2004 second quarter, representing increases of 13% as reported and 15% in constant currencies. For the 2005 second quarter, CATIA licenses increased 8% year over year to 8,157.

SolidWorks revenue increased 26% (32% in U.S. dollars) to €46.6 million in the 2005 second quarter, compared to €37.0 million in the year-ago period. SolidWorks seats licensed increased 32% year over year to 9,598 licenses with pricing up slightly on a more favorable product mix.

Operating Income and Margin and EPS

Earnings per diluted share increased 3% to €0.32 in the 2005 second quarter, compared to earnings per diluted share of €0.31 in the 2004 second quarter. Earnings per diluted share excluding acquisition costs increased 6% to €0.33 in the second quarter of 2005, compared to earnings per diluted share excluding acquisition costs of €0.31 in the 2004 second quarter.

Operating income increased 4% to €54.7 million in the second quarter of 2005, (25.2% operating margin) compared to €52.5 million in the year-ago period (27.3% operating margin). Operating income excluding acquisition costs increased 4% to €55.2 million in the 2005 second quarter, compared to €53.0 million in the 2004 second quarter. In the second quarter of 2005 the operating margin excluding acquisition costs was 25.4%, in line with the Company's objective of 25-26%. In the 2004 second quarter the operating margin excluding acquisition costs was 27.5%. Similar to the first quarter of 2005, operating income in the second quarter increased year over year, while, as anticipated, the operating margin decreased reflecting higher investment in expanding the Company's marketing and sales activities with small and medium-sized businesses (SMB).

First Half 2005 Financial Highlights

• Total revenue €416.5 million, up 13% as reported and up 15% in constant currencies
• Software revenue €348.1 million, up 13% as reported and up 15% in constant currencies
• Process-centric revenue €330.0 million, up 10% as reported and up 13% in constant currencies
• PDM revenue €48.3 million, up 14% as reported and up 16% in constant currencies
• SolidWorks revenue €86.5 million, up 24% as reported (up 30% in U.S. dollars)
• EPS €0.59 on U.S. GAAP basis
• EPS excluding acquisition costs up 5% to €0.59

Strategy, Technology and Partnerships

Mr. Charlès stated, "In addition to our strong financial performance, the second quarter was a period in which we made good progress on important business initiatives across the Company. During the quarter we introduced our newest release for the PLM market, Version 5 Release 15 and were pleased that Boeing put it in production - only two days after we made it available - across its organization and among its partners for the 787 aircraft. We entered into an agreement to acquire ABAQUS and announced SIMULIA, a new scientific platform, both core components of our strategy to take a leadership position in the large, fast-growing and fragmented simulation market. In partnership with i2 Technologies Dassault Systèmes is developing sourcing solutions as an integrated component of V5 PLM. Today, we are pleased to welcome to Dassault Systèmes Virtools' team, experts in interactive web applications which give live behavior to 3D content, to exploit the power and value of 3D representations on the Web and for everyone."

In a separate press release issued today, DS and IBM announced plans to expand DS's role as PLM channel manager for SMB. This new initiative builds upon the success of the West Master Agent model, implemented a year ago in France, Belgium, Luxembourg and Monaco, where DS provided channel management and technical and marketing support to this network of IBM Business Partners. Pursuant to the expanded channel management provider (CMP) role, DS will now also act as CMP on behalf of IBM PLM with IBM Business Partners in United States, Germany, Switzerland, the United Kingdom, Sweden, Russia and the CIS countries.

During the second quarter, DS established a VAR channel in China to sell its V5 PLM software applications. While PLM revenue in China is currently at an emerging stage, the Company sees significant opportunity for the future. In order to respond to the needs of the Chinese market, this network of VARs is in charge of selling all DS PLM brands - CATIA, ENOVIA, SMARTEAM and DELMIA - in an integrated approach. DS is also active in China through SolidWorks with its VAR channel for the Mainstream 3D market as well as with CAXA, a DS partner selling 2D and 3D products based on DS V5 infrastructure.

In a separate press release also issued today, DS announced that it has acquired Paris-based Virtools SA, for approximately €12 million in cash. Virtools' applications allow users not familiar with 3D modeling to quickly and easily add life experience to any 3D model.

In May 2005 DS entered into an agreement to acquire ABAQUS, Inc. in an all-cash transaction approximating $413 million, subject to certain adjustments at closing. ABAQUS is well recognized as a leader in non-linear finite element analysis software with best-in-class technology, which companies are increasingly seeking, that is capable of scaling from simple to the most demanding simulations. Headquartered in Rhode Island, ABAQUS employs over 400 people worldwide and has a customer base of approximately 2,500 companies in the automotive, defense, power, material processing, electronics, general manufacturing, aerospace, medical, and consumer products industries. The proposed acquisition is expected to be completed by the end of the third quarter of 2005.

Also in May 2005 DS and i2 Technologies, Inc. entered into a strategic partnership to develop jointly sourcing solutions based upon DS' V5 platform. The objective of the partnership is to integrate sourcing throughout the product lifecycle, thereby eliminating or significantly reducing barriers between the engineering and sourcing communities. More specifically, by aligning engineering and sourcing earlier in the product development cycle, customers should be able to realize reduced product costs, improved time-to-market cycles and enhanced initial product quality. On June 27, 2005, as part of the long-term agreement, i2 conveyed control of the competency center (originally hosted by i2) and technology licenses to DS for approximately $10 million subject to certain adjustments.

Version 5 Release 15 (V5R15), "Open Collaboration on the Proven V5 Platform" - announced in May 2005 for CATIA, DELMIA, ENOVIA and SMARTEAM builds on the strengths of V5R14 by providing unified working environments, or desktops, targeting the specific needs of key user communities, such as engineering, manufacturing and enterprise users more broadly. DS also further strengthened its coverage of business processes with new technologies designed to help improve productivity and innovation among companies across a number of industries. This new release leverages DS' open V5 platform, with the goal of providing companies in the supply chain with enhanced collaboration capabilities and process coverage. Highlights of this newest release include: (i) accelerated collaboration with suppliers by facilitating the exchange of engineering package data between OEMs and suppliers of all sizes and (ii) enhanced communications with 3D XML including the introduction of a new 3D XML viewer in V5R15, among other key highlights.

SolidWorks 2006 was introduced in June of this year. SolidWorks 2006 includes a multitude of improvements designed to simplify, accelerate, and integrate design engineering work, including: (i) a significant increase in performance; (ii) new user productivity tools such as Smart Components; (iii) new features for consumer product, sheet metal, and machine designers (such as Mounting Bosses, Snap Hooks, and Vents); (iv) new mainstream design validation capabilities that put sophisticated analysis in the hands of designers; (v) innovations that significantly ease the migration from 2D to 3D design, such as 3D Drawing View and Design Checker, as well as enhancements to the DWG Series (Editor, Gateway, Viewer); and (vi) enhancements in SolidWorks Office Premium that empower design engineers across the entire spectrum of their activities.

During the quarter DELMIA announced that its V5 DPM Assembly and V5 Human digital manufacturing software is being used by Lockheed Martin to simulate the feasibility of a moving assembly line at the mile-long Fort Worth, Texas facility slated for production of its new F-35 Joint Strike Fighter aircraft. The aircraft assembly process, tooling and line workers involved in the production process have all been simulated and tested prior to production.

In the second quarter DS and IBM introduced a new PLM industry solution, General Mechanical Design (GMD) solution that enables companies to improve design productivity and speed innovation by facilitating reuse of data and knowledge, re-adapted to a new context, from one project to another. Industrial Products companies often base new product designs on up to 70 to 80 percent of the data and skills used in previous projects. With the GMD solution, which helps reuse data and skills more productively, companies can reduce design time by up to 50 percent and can cut manufacturing and assembly time by up to 60 percent.

During the quarter DS announced the free availability of 3D XML (Extensible Markup Language) Specifications and Player, which will enable users to view and manipulate rich 3D data in a variety of industrial, consumer and commercial environments. 3D XML is a universal, lightweight XML-based format that enables users to share live, accurate 3D data quickly and easily. With 3D XML, 3D becomes a true, powerful communication medium allowing users to "see what you mean."

Business Outlook

Thibault de Tersant, stated, "We are raising our objectives for revenue and earnings growth for 2005. The higher growth expectations for revenue reflect the stronger than anticipated results in the second quarter, and our more favorable outlook for second half activity, as well as the inclusion of Virtools and our expanded SMB initiatives. Specifically, on a constant currency basis, our revenue growth objective for 2005 is about 15-16%, up from 12-14%. On a reported revenue basis, this translates to a revenue objective of €910-915 million, up from €880-890 million, and is based upon a U.S. dollar to Euro exchange rate of $1.27 per €1.00, reflecting a change in our second half assumption for the U.S. dollar to $1.25 per €1.00 compared to $1.30 per €1.00 previously. For the full year, we are also increasing our EPS objective excluding acquisition costs to €1.52-1.53, representing year-over-year growth of 12-13%, up from our previous objectives of €1.47-1.49. We continue to maintain our objective of a stable operating margin of approximately 29% excluding acquisition costs, similar to what we achieved in 2004."

"We estimate that our underlying core business operating margin could be 150 basis points higher for the full year 2005 excluding acquisitions announced over the last year and a half, but we have used this improvement to make important investments in new initiatives aimed at enhancing future growth opportunities."

"For the third quarter of 2005, our reported revenue objective is about €210-215 million and our EPS objective is about €0.28 per share excluding acquisition costs." The Company is basing third quarter reported revenue and EPS objectives on the assumption of a U.S. dollar to Euro exchange rate of $1.25 per €1.00, compared to its previous assumption of $1.30 per €1.00.

Endnotes

• All comparative figures are given on a year-over-year basis unless specified otherwise.
• All financial information is unaudited and reported in accordance with U.S. generally accepted accounting principles (U.S. GAAP). Additional financial information is also presented that is not in conformity with U.S. GAAP, in particular the presentation of operating income, operating margin and earnings per share excluding acquisition costs (acquisition costs are primarily comprised of technology amortization in addition to other acquisition-related costs). The Company has provided in the tables to this press release and on its website www.3ds.com/corporate/investors/ reconciliations between U.S. GAAP and non-U.S. GAAP figures.
• The Company uses constant currency revenue growth to evaluate its financial performance in comparison to prior periods and as a measure of expected growth in planning and setting objectives for future periods. The Company believes this measure is an important indicator of the Company's progress and outlook because it provides a better gauge of the level of change in the business activity as it eliminates any changes arising from currency fluctuations. The Company believes the presentation of this measure is relevant and useful for investors because it allows investors to view revenue growth in a manner similar to the method used by the Company's management, helps improve investors' ability to understand the Company's revenue growth, and makes it easier to compare the Company's results with other companies, including competitors, whose reporting currency may be different from Dassault Systèmes. Constant currency revenue growth, as calculated by the Company, may not be comparable to similarly titled measures employed by other companies.