3DS: Half-year statement of the liquidity contract entered into with Oddo BHF SCA

P ess ReleaseVELIZY-VILLACOUBLAY, F a ce — July 6, 2026

Half-yea stateme t of the Liquidity co t act e te ed i to with Oddo BHF SCA

Dassault Systèmes (Eu o ext Pa is: FR0014003TT8, DSY.PA) a ou ces that the followi g esou ces appea ed o Ju e 30, 2026 o the liquidity co t act e te ed i to with Oddo BHF SCA impleme ted o Ja ua y 7, 2015 a d updated o Ju e 18, 2019:

•      771,988 Dassault Systèmes sha es, a d
• € 8,763,836.54 i cash.

It is emi ded that:

1. at the time of the impleme tatio of the liquidity co t act, the followi g esou ces appea ed o the liquidity accou t:
   • 0 Dassault Systèmes sha es;
   • € 10,000,000 i cash.
2. Pu sua t to the ame dme t dated Octobe 26, 2017, a additio al co t ibutio of € 5,000,000 was made, i c easi g f om € 10,000,000 to € 15,000,000 the esou ces of the liquidity ag eeme t.
3. Pu sua t to the ame dme t dated Decembe 13, 2018, a additio al co t ibutio of € 5,000,000 was made, i c easi g f om € 15,000,000 to € 20,000,000 the esou ces of the liquidity ag eeme t.
4. At the time of impleme tatio of the ew liquidity co t act o Ju e 18, 2019, the followi g esou ces appea ed o the liquidity accou t:
   • 62,557 Dassault Systèmes stocks, a d;
   • € 17,496,140.38 i cash.

F om Ja ua y 1, 2026 to Ju e 30, 2026 the followi g t a sactio s have bee ca ied out:

• 20,107 pu chases;
• 22,352 sales.

Du i g the same pe iod, the volume of secu ities t aded, amou ted to:

• 4,877,806 Dassault Systèmes stocks a d € 97,306,056.16 pu chases;
• 5,031,015 Dassault Systèmes stocks a d € 100,685,138.59 sales.

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Dassault Systèmes P ess Co tactsCo po ate / F a ce        A aud Malhe be / Débo ah Cobbi+33 1 61 62 87 73 / +33 1 61 62 70 83a aud.malhe be@3ds.com / debo ah.cobbi@3ds.com

Attachme t

• 3DS: Half-yea stateme t of the liquidity co t act e te ed i to with Oddo BHF SCA