Vélizy-Villacoublay, September 16, 2021             Disclosure of trading in own shares                     (Repurchase program decided by the General Meeting of Shareholders of May 26, 2021)    

Declaration of the number of outstanding shares and voting rights as of August 31 , 2021 Vélizy-Villacoublay (France) September 7 , 2021 – Dassault Systèmes (Euronext Paris: #14003TT8, DSY.PA) reports below the total number of its outstanding shares and voting rights as of August 31, 2021,

German Premium Automobile Manufacturer Deploys Dassault Systèmes ’ Solution for P roduction P lanning and S cheduling at E-Drive Production S ite s in Europe R ollout of Dassault Systèmes’ DELMIA Q uintiq applications completed at BMW Group’s E-Drive production sites in Dingolfing , Leipzig and

Declaration of the number of outstanding shares and voting rights as of July 31 , 2021 Vélizy-Villacoublay (France) August 6 , 2021 – Dassault Systèmes (Euronext Paris: #14003TT8, DSY.PA) reports below the total number of its outstanding shares and voting rights as of July 31, 2021, according to

Availability of Dassault Systèmes’ 2021 Half-Year Financial Report (IFRS Half-Year Consolidated Condensed Financial Statements) Vélizy-Villacoublay , France – July 27 , 2021 — Dassault Systèmes (Euronext Paris: #14003TT8, DSY.PA), the 3D EXPERIENCE Company, world leader in 3D design software, 3D

Raises Full Year Guidance VÉ LIZY-VILLACOUBLAY, France — July 27 , 2021 — Dassault Systèmes (Euronext Paris: #14003TT8, DSY.PA) announces IFRS unaudited financial results for the second quarter and first half ended June 30, 2021. The Group’s Board of Directors approved these results on July 26,