Press Release VELIZY-VILLACOUBLAY, France — January 20 th ,2022 Dassault Systèmes to publish its Fourth Quarter and Full Y ear 2021 Results, Webcast and Conference Call on February 3 rd , 2022 Dassault Systèmes (Euronext Paris: FR0014003TT8, DSY.PA), the 3D EXPERIENCE Company, world leader in 3D

                                                                                                        Vélizy-Villacoublay, January 18, 2022             Disclosure of trading in own shares                     (Repurchase program decided by the General Meeting of Shareholders of May 26, 2021)      

                                                                                                        Vélizy-Villacoublay, January 11, 2022             Disclosure of trading in own shares                     (Repurchase program decided by the General Meeting of Shareholders of May 26, 2021)      

Press Release VELIZY-VILLACOUBLAY, France — January 10 , 2022 Half-year statement of the Liquidity contract entered into with Oddo BHF SCA Dassault Systèmes (Euronext Paris: FR0014003TT8, DSY.PA) announces that the following resources appeared on December 31, 2021 on the liquidity contract entered

Press Release VELIZY-VILLACOUBLAY, France — January 5, 2022 Declaration of the number of outstanding shares and voting rights as of December 31, 2021 Dassault Systèmes (Euronext Paris: FR0014003TT8, DSY.PA) today announced below the total number of its outstanding shares and voting rights as of

                                                                                                        Vélizy-Villacoublay, December 27, 2021             Disclosure of trading in own shares                     (Repurchase program decided by the General Meeting of Shareholders of May 26, 2021)