Dassault Systèmes SE

Transaction in Own Shares • Aug 2, 2023

Press Release VELIZY-VILLACOUBLAY, France — August 2, 2023

DISCLOSURE OF TRADING IN OWN SHARES

(Repurchase program decided by the General Meeting of Shareholders of May 24, 2023)

Issuer: Dassault Systèmes (Euronext Paris: FR0014003TT8, DSY.PA) Type of securities: Ordinary shares Period: July 26 to July 31, 2023

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	26-Jul-23	FR0014003TT8	102,000	37.3838	XPAR
DASSAULT SYSTEMES	96950065LBWY0APQIM86	26-Jul-23	FR0014003TT8	64,500	37.3728	DXE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	26-Jul-23	FR0014003TT8	16,000	37.3196	TQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	26-Jul-23	FR0014003TT8	17,500	37.3329	AQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	27-Jul-23	FR0014003TT8	172,043	38.7001	XPAR
DASSAULT SYSTEMES	96950065LBWY0APQIM86	27-Jul-23	FR0014003TT8	88,207	38.7354	DXE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	27-Jul-23	FR0014003TT8	11,160	38.6089	TQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	27-Jul-23	FR0014003TT8	21,245	38.6542	AQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	28-Jul-23	FR0014003TT8	217,157	38.5980	XPAR
DASSAULT SYSTEMES	96950065LBWY0APQIM86	28-Jul-23	FR0014003TT8	100,700	38.5942	DXE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	28-Jul-23	FR0014003TT8	11,543	38.4453	TQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	28-Jul-23	FR0014003TT8	20,600	38.5991	AQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	31-Jul-23	FR0014003TT8	180,598	38.8387	XPAR
DASSAULT SYSTEMES	96950065LBWY0APQIM86	31-Jul-23	FR0014003TT8	91,247	38.8507	DXE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	31-Jul-23	FR0014003TT8	10,000	38.8638	TQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	31-Jul-23	FR0014003TT8	18,968	38.8631	AQE

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, Investor 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 virtual environments to imagine sustainable innovations. By creating virtual twin experiences of the real world with our 3DEXPERIENCE platform and applications, our customers can redefine the creation, production and lifecycle-management processes of their offer and thus have a meaningful impact to make the world more sustainable. The beauty of the Experience Economy is that it is a human-centered economy for the benefit of all –consumers, patients and citizens.

Dassault Systèmes brings value to more than 300,000 customers of all sizes, in all industries, in more than 150 countries. For more information, visit www.3ds.com

Dassault Systèmes Investor Relations Team FTI Consulting

+33 1 61 62 40 73 / 69 24 Jamie Ricketts : +44 20 3727 1600 investors@3ds.com Tom Blundell: +44 20 3727 1600 USA & Canada: callie.gauzer@3ds.com

Béatrix Martinez: Arnaud de Cheffontaines: +33 1 47 03 69 48

Dassault Systèmes Press Contacts Corporate / France Arnaud Malherbe: +33 1 61 62 87 73 arnaud.malherbe@3ds.com

© Dassault Systèmes. All rights reserved. 3DEXPERIENCE, the 3DS logo, the Compass icon, IFWE, 3DEXCITE, 3DVIA, BIOVIA, CATIA, CENTRIC PLM, DELMIA, ENOVIA, GEOVIA, MEDIDATA, NETVIBES, OUTSCALE, SIMULIA and SOLIDWORKS are commercial trademarks or registered trademarks of Dassault Systèmes, a European company (Societas Europaea) incorporated under French law, and registered with the Versailles trade and companies registry under number 322 306 440, or its subsidiaries in the United States and/or other countries.