VÉLIZY-VILLACOUBLAY, France — April 10, 2015 — Dassault Systèmes (Euronext Paris: #13065, DSY.PA), the 3DEXPERIENCE Company, world leader in 3D design software, 3D Digital Mock Up and Product Lifecycle Management (PLM) solutions, will host a webcast and a conference call on Thursday, April 23, 2015, to discuss its operating performance for the first quarter 2015 ended March 31, 2015.

The management of Dassault Systèmes will host the webcast at 8:30 AM London Time - 9:30 AM Paris Time and will then also host the conference call at  9:00 AM New York Time - 2:00 PM London Time - 3:00 PM Paris Time.

Both the webcast and the conference call will be available via the Internet by accessing Dassault Systèmes’ website at www.3ds.com/investors/.

Please follow the directions on the main page to link to the audio and connect to the website at least fifteen minutes prior to the webcast or conference call to register, download and install any necessary software. The webcast and conference call will be archived for 1 year.