Declaration of the number of outstanding shares and voting rights as of May 31 , 2021 Vélizy-Villacoublay (France) June 4 , 2021 – Dassault Systèmes (Euronext Paris: #13065, DSY.PA) reports below the total number of its outstanding shares and voting rights as of May 31, 2021, according to articles

                                                                                                        Vélizy-Villacoublay, May 27, 2021             Disclosure of trading in own shares                     (Repurchase program decided by the General Meeting of Shareholders of May 26, 2020)          

DASSAULT SYSTEMES FIVE-FOR-ONE STOCK SPLIT ON JULY 7, 20 2 1          Vélizy-Villacoublay, France, May 27 , 20 2 1 – Dassault Systèmes (Euronext Paris: #13065, DSY.PA) announces that the General Meeting of Shareholders held on May 26, 2021 decided to split the par value of the Dassault Systèmes’

COMBINED GENERAL SHAREHOLDERS’ MEETING OF MAY 26, 2021 Availability of preliminary documents Vélizy-Villacoublay , May 11 , 2020 – Dassault Systèmes (Euronext Paris: #13065, DSY.PA) informs its shareholders that its Combined Shareholders’ Meeting will be held in camera on Wednesday, May 26, 2021 at

Declaration of the number of outstanding shares and voting rights as of April 3 0 , 2021 Vélizy-Villacoublay (France) May 6 , 2021 – Dassault Systèmes (Euronext Paris: #13065, DSY.PA) reports below the total number of its outstanding shares and voting rights as of April 30, 2021, according to

COMBINED GENERAL SHAREHOLDERS’ MEETING OF MAY 26, 2021 Total number of voting rights and outstanding shares of the Company share capital on April 16 , 2021 , publication date of the Preliminary Notification Vélizy-Villacoublay , France, May 5 , 2021 – According to Article R.22-10-23 of the French