Dassault Systèmes: 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 issuerIdentification code of the issuerDate of tradingIdentification code of the financial instrumentDaily total volume
(in number of shares)Daily weighted average acquisition price of the shares*MarketDASSAULT SYSTEMES96950065LBWY0APQIM868-Sep-25FR0014003TT85 82226,7952XPARDASSAULT SYSTEMES96950065LBWY0APQIM8610-Sep-25FR0014003TT825 00027,6455XPAR

(*)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: [email protected]

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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: +33 1 47 03 69 48
+33 1 61 62 40 73                                        Jamie Ricketts : +44 20 3727 1600
[email protected]

Dassault Systèmes Press Contacts
Corporate / France
Arnaud Malherbe / Déborah Cobbi
+33 1 61 62 87 73 / +33 1 61 62 70 83
[email protected] / [email protected]

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Dassault Systèmes: disclosure of trading in own shares