Participation notification by Citigroup Inc.
Press release - Regulated information
Brussels, September 25, 2026, 17:45 CEST
In line with Belgian transparency legislation (Law of May 2, 2007), Citigroup Inc. recently sent to Solvay the following transparency notification indicating that they crossed the threshold of 3%.
Here is a summary of the notification:
| Date on which the threshold is crossed | Voting rights after the transaction | Equivalent financial instruments after the transaction | Total |
| September 21, 2026 | - | - | - |
The notification, dated September 22, 2026, contains the following information:
- Reason for the notification:
- Acquisition or disposal of voting securities or voting rights
- Downward crossing of the lowest threshold
- Notified by: A parent undertaking or a controlling person
- Date on which the threshold is crossed: September 21, 2026
- Threshold of direct voting rights crossed: 3% downwards
- Denominator: 105,876,416
- Persons subject to the notification requirement: Citigroup Inc., 1209 North Orange Street in Wilmington, Delaware 19801, USA
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 around 8,400 employees. Since 1863, Solvay harnesses 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 €4.3 billion in net sales in 2025, 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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