Declaration of the number of outstanding shares and voting rights as of June 30, 2020 Vélizy-Villacoublay (France) July 3, 2020 – Dassault Systèmes (Euronext Paris: #13065, DSY.PA) reports below the total number of its outstanding shares and voting rights as of June 30, 2020, according to articles

Declaration of the number of outstanding shares and voting rights as of May 31, 2020 Vélizy-Villacoublay (France) June 5, 2020 – Dassault Systèmes (Euronext Paris: #13065, DSY.PA) reports below the total number of its outstanding shares and voting rights as of May 31, 2020, according to articles

Declaration of the number of outstanding shares and voting rights as of April 30, 2020 Vélizy-Villacoublay (France) May 7, 2020 – Dassault Systèmes (Euronext Paris: #13065, DSY.PA) reports below the total number of its outstanding shares and voting rights as of April 30, 2020, according to articles

COMBINED GENERAL SHAREHOLDERS’ MEETING OF MAY 26, 2020 Availability of preliminary documents Vélizy-Villacoublay, May 6, 2020 – Dassault Systèmes (Euronext Paris: #13065, DSY.PA) informs its shareholders that its Combined Shareholders’ Meeting will be held in camera on Tuesday, May 26, 2020 at 3 pm

 ; Attachment 2019 Universal registration document of Dassault Systèmes SE

VÉLIZY-VILLACOUBLAY, France — April 23, 2020 — Dassault Systèmes (Euronext Paris: #13065, DSY.PA) announces IFRS unaudited financial results for the first quarter ended March 31, 2020. These results were reviewed by the Group’s Board of Directors on April 22, 2020.  This press release also includes