 VÉLIZY-VILLACOUBLAY, France February 4, 2021 Dassault Systèmes Euronext Paris: 13065, DSY.PA announces IFRS unaudited financial results for the fourth quarter and year ended December 31, 2020. The Groups Board of Directors reviewed these results on February 3, 2021. This press release also includes financial information on a non-IFRS basis and reconciliations with IFRS figures in the Appendix to this communication. 