Dassault Systèmes SE

Transaction in Own Shares • Nov 2, 2022

Press Release VELIZY-VILLACOUBLAY, France — November 2, 2022

DISCLOSURE OF TRADING IN OWN SHARES

(Repurchase program decided by the General Meeting of Shareholders of May 19, 2022)

Issuer: Dassault Systèmes (Euronext Paris: FR0014003TT8, DSY.PA) Type of securities: Ordinary shares Period: October 27 to October 28, 2022

Detailed information (presentation by day and by market and transaction-by-transaction details) can be consulted on the website of Dassault Systèmes: https://investor.3ds.com/regulatedinformation/permanent-information

Name of issuer	Identification code of the issuer	Date of trading	Identification code of the financial instrument	Daily total volume (in number of shares)	Daily weighted average acquisition price of the shares*	Market
DASSAULT SYSTEMES	96950065LBWY0APQIM86	27-Oct-22	FR0014003TT8	318773	34,5586	XPAR
DASSAULT SYSTEMES	96950065LBWY0APQIM86	27-Oct-22	FR0014003TT8	208430	34,5372	DXE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	27-Oct-22	FR0014003TT8	15249	34,5286	TQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	27-Oct-22	FR0014003TT8	32974	34,5410	AQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	28-Oct-22	FR0014003TT8	280000	34,5584	XPAR
DASSAULT SYSTEMES	96950065LBWY0APQIM86	28-Oct-22	FR0014003TT8	44574	34,5478	DXE

Presentation of the trading in own shares by day and by market

(*)The weighted average unit price is a rounded price

Declarations related to crossing of threshold must be sent to:

Dassault Systèmes, Investors Relations Service, 10, rue Marcel Dassault, CS 40501, 78946 Vélizy-Villacoublay Cedex (France). E-mail address: Investors@3ds.com

ABOUT DASSAULT SYSTÈMES

Dassault Systèmes, the 3DEXPERIENCE Company, is a catalyst for human progress. We provide business and people with collaborative 3D virtual environments to imagine sustainable innovations. By creating virtual twin experiences of the real world with our 3DEXPERIENCE platform and applications, our customers push the boundaries of innovation, learning and production to achieve a more sustainable world for patients, citizens, and consumers. Dassault Systèmes brings value to more than 300,000 customers of all sizes, in all industries, in more than 140 countries. For more information, visit www.3ds.com

Dassault Systèmes Investor Relations' Contacts François-José BORDONADO / Béatrix MARTINEZ investors@3ds.com +33 (0)1 61 62 69 24 USA & Canada: callie.gauzer@3ds.com

© Dassault Systèmes. All rights reserved. 3DEXPERIENCE, the Compass icon, the 3DS logo, CATIA, BIOVIA, GEOVIA, SOLIDWORKS, 3DVIA, ENOVIA, NETVIBES, MEDIDATA, CENTRIC PLM, 3DEXCITE, SIMULIA, DELMIA, and IFWE are commercial trademarks or registered trademarks of Dassault Systèmes, a French "société européenne" (Versailles Commercial Register # B 322 306 440), or its subsidiaries in the United States and/or other countries.