disclosure of trading in own shares

Press Release
VELIZY-VILLACOUBLAY, France — September 16, 2025

                

DISCLOSURE OF TRADING IN OWN SHARES
(Repurchase program decided by the General Meeting of Shareholders of May 22, 2025)

Issuer: Dassault Systèmes (Euronext Paris: FR0014003TT8, DSY.PA)
Type of securities: Ordinary shares
Period: September 8 and September 10, 2025

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/regulated-information/permanent-information

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

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	8-Sep-25	FR0014003TT8	5 822	26,7952	XPAR
DASSAULT SYSTEMES	96950065LBWY0APQIM86	10-Sep-25	FR0014003TT8	25 000	27,6455	XPAR

(*)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: [e-mail]  

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ABOUT DASSAULT SYSTÈMES

Dassault Systèmes is a catalyst for human progress. Since 1981, the company has pioneered virtual worlds to improve real life for consumers, patients and citizens. With Dassault Systèmes’ 3DEXPERIENCE platform, 370 000 customers of all sizes, in all industries, can collaborate, imagine and create sustainable innovations that drive meaningful impact. For more information, visit www.3ds.com

Dassault Systèmes Investor Relations Team                FTI Consulting
Béatrix Martinez :                                        Arnaud de Cheffontaines: [phone]
[phone]                                        Jamie Ricketts : [phone]
[e-mail]                                        

Dassault Systèmes Press Contacts
Corporate / France        
Arnaud Malherbe / Déborah Cobbi
[phone] / [phone]
[e-mail] / [e-mail]

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• Dassault Systèmes: disclosure of trading in own shares