Dassault Systèmes SE

Transaction in Own Shares • Feb 9, 2024

Press Release VELIZY-VILLACOUBLAY, France — February 9, 2024

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: February 2 to February 6, 2024

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	Daily total volume (in number of	Daily weighted average acquisition price	Market
			instrument	shares)	of the shares*
DASSAULT SYSTEMES	96950065LBWY0APQIM86	2-Feb-24	FR0014003TT8	79 382	41,9948	XPAR
DASSAULT SYSTEMES	96950065LBWY0APQIM86	2-Feb-24	FR0014003TT8	17 206	41,9864	DXE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	2-Feb-24	FR0014003TT8	5 973	41,9875	TQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	2-Feb-24	FR0014003TT8	11 724	41,9918	AQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	5-Feb-24	FR0014003TT8	108 244	41,9973	XPAR
DASSAULT SYSTEMES	96950065LBWY0APQIM86	5-Feb-24	FR0014003TT8	33 250	41,9937	DXE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	5-Feb-24	FR0014003TT8	6 149	42,0000	TQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	5-Feb-24	FR0014003TT8	623	41,9979	AQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	6-Feb-24	FR0014003TT8	112 417	41,9991	XPAR
DASSAULT SYSTEMES	96950065LBWY0APQIM86	6-Feb-24	FR0014003TT8	18 464	41,9979	DXE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	6-Feb-24	FR0014003TT8	3 783	41,9932	TQE
DASSAULT SYSTEMES	96950065LBWY0APQIM86	6-Feb-24	FR0014003TT8	3 988	41,9961	AQE
DASSAULT SYSTEMES	9695002I9DJHZ3449O66	2-Feb-24	FR0014003TT8	50 000	42	XPAR
DASSAULT SYSTEMES	9695002I9DJHZ3449O66	5-Feb-24	FR0014003TT8	500 000	42	XPAR
DASSAULT SYSTEMES	9695002I9DJHZ3449O66	6-Feb-24	FR0014003TT8	2 048 797	42	XPAR

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 life-cycle-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 Béatrix Martinez : Arnaud de Cheffontaines: +33 1 47 03 69 48 +33 1 61 62 40 73 / 69 24 Jamie Ricketts : +44 20 3727 1600 investors@3ds.com Tom Blundell: +44 20 3727 1600

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.