Solvay S.A.

Participation notification by UBS Group AG

Press release                                                                  Regulated information

Brussels, December 4, 2025, 17:45 CET

In line with Belgian transparency legislation (Law of May 2, 2007), UBS Group AG recently sent to Solvay the following transparency notification indicating that they crossed the threshold of 3%. 

Here is a summary of the notification:

The notification, dated December 2, 2025, contains the following information:

• Reason for the notification: 
  • Acquisition or disposal of financial instruments that are treated as voting securities
• Notified by: A parent undertaking or a controlling person
• Date on which the threshold is crossed: November 27, 2025
• Threshold of direct voting rights crossed: 3% upwards
• Denominator: 105,876,416 
• Additional information: The disclosure obligation arose due to the total indirect holdings of UBS Group AG in voting rights of Solvay SA, held directly by controlled undertakings, going above 3% on 27th November 2025.
• Persons subject to the notification requirement: UBS Group AG, Bahnhofstrasse 45, 8001 Zürich

Transparency notifications and the full chain of controlled undertakings through which the holding is effectively held are available on the Investor Relations Section of Solvay's website.

Contacts

Investor relations

Geoffroy d’Oultremont: +32 478 88 32 96
Vincent Toussaint: +33 6 74 87 85 65
Charlotte Vandevenne: +32 471 68 01 66
investor.relations@solvay.com

Media relations

Peter Boelaert: +32 479 30 91 59
Laetitia Van Minnenbruggen: +32 484 65 30 47
media.relations@solvay.com

About Solvay 

Solvay, a pioneering chemical company with a legacy rooted in founder Ernest Solvay's pivotal innovations in the soda ash process, is dedicated to delivering essential solutions globally through its workforce of circa 9,000 employees. Since 1863, Solvay has harnessed the power of chemistry to create innovative, sustainable solutions that answer the world’s most essential needs such as purifying the air we breathe and the water we drink, preserving our food supplies, protecting our health and well-being, creating eco-friendly clothing, making the tires of our cars more sustainable and cleaning and protecting our homes. Solvay’s unwavering commitment drives the transition to a carbon-neutral future by 2050, underscoring its dedication to sustainability and a fair and just transition. As a world-leading company with €4.7 billion in net sales in 2024, Solvay is listed on Euronext Brussels and Paris (SOLB). For more information about Solvay, please visit solvay.com or follow Solvay on Linkedin. 

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Attachments

• 20251127 - UBS Group AG Notification
• Press release