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Solvay SA Major Shareholding Notification 2026

Jan 20, 2026

4005_mrq_2026-01-20_6c3ced74-3dd5-45dc-b616-0aa46fcb4fbc.pdf

Major Shareholding Notification

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Press release Regulated information

Participation notifications by Morgan Stanley

Brussels, January 20, 2026, 17:45 CET

In line with Belgian transparency legislation (Law of May 2, 2007), Morgan Stanley recently sent to Solvay the following transparency notifications indicating that they crossed the threshold of 3%. Here is a summary of the notifications:

Date on which the threshold is crossed Voting rights after the transaction Equivalent financialinstruments after thetransaction Total
December 23, 2025 0.00% - 0.00%
January 9, 2026 0.04% 3.16% 3.20%
January 12, 2026 ary 12, 2026 0.01% 2.77%

The last notification, dated January 16, 2026, contains the following information:

  • Reason for the notification:
    • o Acquisition or disposal of voting securities or voting rights
    • o Downward crossing of the lowest threshold
  • Notified by: A parent undertaking or a controlling person
  • Date on which the threshold is crossed: January 12, 2026
  • Threshold of direct voting rights crossed: 3% downwards
  • Denominator: 105,876,416
  • Persons subject to the notification requirement: Morgan Stanley c/o The Corporation Trust Company (DE), Corporation Trust Center, 1209 Orange Street, Wilmington, Delaware 19801, USA

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• Notified details:

A) Voting rights Previous notification # of voting rights After the transaction
Holders of voting rights # of voting rights % of voting rights
Linked to securities Not linked to the securities Linked to securities Not linked to the securities
Morgan Stanley 0 0 0 0.00% 0.00%
Morgan Stanley & Co. LLC 2,949 6,830 0 0.01% 0.00%
Morgan Stanley & Co. International plc 40,694 0 0 0.00% 0.00%
Subtotal 43,643 6,830 0.01%
TOTAL 6,830 0 0.01% 0.00%
B) Equivalent financial instruments After the transaction
Holders of equivalent financial instruments Type of financial instrument Expiration date Exercise period or date # of voting rightsthat may beacquired if theinstrument isexercised % of voting rights Settlement
Morgan Stanley & Co. International plc Retail Structured Product - Note 17/08/2037 At any time 38 0.00% cash
Morgan Stanley & Co. International plc Retail Structured Product - Note 02/11/2037 At any time 32,784 0.03% cash
Morgan Stanley & Co. International plc Retail Structured Product - Note 27/05/2038 At any time 3,514 0.00% cash
Morgan Stanley & Co. International plc Equity Call Options 19/06/2026 At any time 637,200 0.60% physical
Morgan Stanley & Co. International plc Equity Call Options 01/10/2035 At any time 380 0.00% cash
Morgan Stanley & Co. International plc Equity Call Options 02/11/2037 At any time 3,063 0.00% cash
Morgan Stanley & Co. International plc Equity Put Options 19/06/2026 At any time 741,100 0.70% physical
Morgan Stanley & Co. LLC Right of recall over securities lending agreements At any time At any time 610,603 0.58% physical
Morgan Stanley & Co. International plc Right of recall over securities lending agreements At any time At any time 313,428 0.30% physical
Prime Dealer Services Corp. Right of recall over securities lending agreements At any time At any time 588,968 0.56% physical
TOTAL 20 R, ( 2,931,078 2.77%
TOTAL (A & B) # of voting rights % of voting rights
CALCULATE 2,937,908 2.77%

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.

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SOLVAY

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

[email protected]

Media relations

Peter Boelaert: +32 479 30 91 59

Laetitia Van Minnenbruggen: +32 484 65 30 47

[email protected]

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 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 €4.7 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.

Ce communiqué de presse est également disponible en français. Dit persbericht is ook in het Nederlands beschikbaar.

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