Declaration of the number of outstanding shares and voting rights as of July 31, 2020 Vélizy-Villacoublay (France) August 7, 2020 – Dassault Systèmes (Euronext Paris: #13065, DSY.PA) reports below the total number of its outstanding shares and voting rights as of July 31, 2020, according to

RAPPORT FINANCIER SEMESTRIEL 30 JUIN 2020 Société européenne au capital de 132 127 159,50 euros Siège social : 10, rue Marcel Dassault – 78140 Vélizy-Villacoublay 322 306 440 RCS Versailles   Sommaire 1 PERSONNE RESPONSABLE 1.1      Responsable du Rapport Financier Semestriel 1.2      Attestation

Availability of Dassault Systèmes’ 2020 Half-Year Financial Report (IFRS Half-Year Consolidated Condensed Financial Statements) Vélizy-Villacoublay, France – July 24, 2020 — Dassault Systèmes (Euronext Paris: #13065, DSY.PA), the 3D EXPERIENCE Company, world leader in 3D design software, 3D Digital

Dassault Systèmes Reports Financial Results Well Aligned with its Guidance, IFRS and non-IFRS Total Revenue up 11% in Q2, Reaffirms its 2020 non-IFRS EPS Objective VÉLIZY-VILLACOUBLAY, France — July 23, 2020 — Dassault Systèmes (Euronext Paris: #13065, DSY.PA) announces IFRS unaudited financial

Dassault Systèmes Delivers New Collaborative Data Science Experiences on the 3DEXPERIENCE Platform Dassault Systèmes acquired France-based Proxem, specialist in AI-powered semantic processing software and services that transform text data into actionable content and insights Enhanced collaborative

Medidata Supports Moderna’s COVID-19 Vaccine Clinical Trials with Rave Clinical Cloud Platform  Innovative Patient-Centric Study Design Benefits Study Participants New York, NY – July 23, 2020 – Medidata, a Dassault Systèmes company, the global leader in creating end-to-end solutions supporting the