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Solvay SA Major Shareholding Notification 2026

Mar 4, 2026

4005_rns_2026-03-04_fde538aa-f4f4-4f44-a4d3-346f0475f80e.pdf

Major Shareholding Notification

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FSMA

FINANCIAL SERVICES AND

MARKETS AUTHORITY

Transparency notification

Form TR-1 BE

PART I

1) Status of the notification

Final

2) Issuer

Name
SOLVAY

Identification number
0403-091-220

3) Reason for the notification

Acquisition or disposal of financial instruments that are treated as voting securities

4) Notification by

A parent undertaking or a controlling person

5) Persons subject to the notification requirement

Name Address (for legal entities)
The Goldman Sachs Group, Inc Corporation Truse Center, 1209 Orange Street, Wilmington, DE 19801, USA

6) Persons that dispose of voting rights (only to be filled in if art. 7 of the Law applies)

Name Address (for legal entities)

Please continue entering the information in part II concerning the persons referred to in Sections 5 and 6

Part II

7) Date on which the threshold is crossed

26/02/2026 (DD/MM/YYYY)

8) Threshold that is crossed (in %)

7.5

If the holding has fallen below the lowest threshold, you have the option of not entering any numbers in Section 10

9) Denominator

105,876,416

Please enter the denominator before filling in the data

10) Notified details

A) Voting rights Previous notification After the transaction
# of voting rights # of voting rights % of voting rights
Holders of voting rights Linked to securities Not linked to the securities Linked to securities Not linked to the securities
The Goldman Sachs Group, Inc. 0 0 0.00%
Goldman Sachs International 198,977 0 0.00%
Goldman Sachs Asset Management, L.P. 78,635 116,591 0.11%
Goldman Sachs Asset Management International 19,811 19,811 0.02%
Subtotal 297,423 136,402 0.13%
TOTAL 136,402 0 0.13% 0.00%

Start with "groups" of holders. Add subtotals with $\sum_{i}$ and then finish with the persons who are "alone". For groups, start with the ultimate controlling natural person or legal entity. The totals, subtotals and $\%$ will be updated once you have clicked on .


B) Equivalent financial instruments After the transaction
Holders of equivalent financial instruments Type of financial instrument Expiration date Exercise period or date # of voting rights that may be acquired if the instrument is exercised % of voting rights Settlement
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 212 0.00% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 915 0.00% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 3,200 0.00% Cash
Goldman Sachs Bank Europe SE Call Warrant 30/06/2037 4,550,000 4.30% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 800 0.00% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 2,400 0.00% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 1,700 0.00% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 100 0.00% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 10,000 0.01% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 90 0.00% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 620 0.00% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 7,800 0.01% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 6,000 0.01% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 400 0.00% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 9,844 0.01% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 1,500 0.00% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 5,000 0.00% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 5,672 0.01% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 6,000 0.01% Cash
Goldman Sachs Bank Europe SE Call Warrant 31/12/2030 3,100 0.00% Cash
Goldman Sachs International Swap 12/11/2035 5,609 0.01% Cash
Goldman Sachs International Swap 16/04/2026 1 0.00% Cash
Goldman Sachs International Swap 04/09/2028 4,426 0.00% Cash
Goldman Sachs International Swap 05/12/2030 7,203 0.01% Cash
Goldman Sachs International Swap 26/11/2035 541,902 0.51% Cash
Goldman Sachs International Swap 30/10/2035 74,308 0.07% Cash
Goldman Sachs International Swap 11/11/2027 10,884 0.01% Cash
Goldman Sachs International Swap 25/02/2028 2,408 0.00% Cash
Goldman Sachs International Swap 05/02/2029 921 0.00% Cash
Goldman Sachs International Swap 11/01/2027 21,573 0.02% Cash
Goldman Sachs International Swap 25/05/2026 312 0.00% Cash
Goldman Sachs International Swap 18/02/2036 13,183 0.01% Cash
Goldman Sachs International Swap 18/02/2036 683 0.00% Cash
Goldman Sachs International Swap 25/03/2027 28,396 0.03% Cash
Goldman Sachs International Swap 18/02/2036 4,364 0.00% Cash
Goldman Sachs International Swap 05/02/2029 1,820 0.00% Cash
Goldman Sachs International Swap 02/01/2029 2,062 0.00% Cash
Goldman Sachs International Swap 06/11/2035 15,042 0.01% Cash
Goldman Sachs International Swap 16/01/2031 309 0.00% Cash
Goldman Sachs International Swap 26/02/2029 316 0.00% Cash
Goldman Sachs International Swap 26/11/2035 4,681 0.00% Cash
Goldman Sachs International Swap 26/02/2036 1,471 0.00% Cash
Goldman Sachs International Swap 28/12/2026 211,805 0.20% Cash
Goldman Sachs International Swap 13/11/2034 5,646 0.01% Cash
Goldman Sachs International Swap 05/01/2027 415 0.00% Cash

Goldman Sachs International Swap 26/02/2027 317,982 0.30% Cash -
Goldman Sachs International Swap 14/01/2036 25,324 0.02% Cash -
Goldman Sachs International Swap 26/11/2035 232,453 0.22% Cash -
Goldman Sachs International Swap 06/06/2035 17,169 0.02% Cash -
Goldman Sachs International Swap 26/02/2029 93,176 0.09% Cash -
Goldman Sachs International Swap 17/08/2026 6,386 0.01% Cash -
Goldman Sachs International Swap 14/01/2036 7,571 0.01% Cash -
Goldman Sachs International Swap 05/09/2028 22,770 0.02% Cash -
Goldman Sachs International Swap 16/01/2029 75,050 0.07% Cash -
Goldman Sachs International Swap 26/11/2035 1,750 0.00% Cash -
Goldman Sachs International Swap 31/10/2035 551 0.00% Cash -
Goldman Sachs International Swap 22/05/2035 115,373 0.11% Cash -
Goldman Sachs International Swap 21/01/2036 394,639 0.37% Cash -
Goldman Sachs International Swap 24/12/2035 10,779 0.01% Cash -
Goldman Sachs International Swap 26/02/2029 381 0.00% Cash -
Goldman Sachs International Swap 26/02/2029 1,872 0.00% Cash -
Goldman Sachs International Call Option 19/06/2026 175,000 0.17% Physical -
Goldman Sachs International Put Option 18/12/2026 75,000 0.07% Physical -
Goldman Sachs International Put Option 18/06/2027 150,000 0.14% Physical -
Goldman Sachs International Securities Lending Open 94,775 0.09% Physical -
Goldman Sachs & Co. LLC Securities Lending Open 18,632 0.02% Physical +

Total
7,411,726
7.00%

The totals will be updated once you have clicked on
| TOTAL (A & B) | # of voting rights | % of voting rights |
| --- | --- | --- |
| CALCULATE | 7,548,128 | 7.13% |

11) Full chain of controlled undertakings through which the holding is effectively held, if applicable

img-0.jpeg

12) In case of proxy voting for only one GM

Holder
will cease to hold / will hold again
0
voting rights as of
(DD/MM/YYYY)

13) Additional information

With reference to the items mentioned in Section 10B:
- "Call Option", "Call Warrants", "Put Option" and "Swaps" mentioned in rows 64 to 127 - these are held by the corresponding entities where Goldman Sachs has a long exposure


Done at Warsaw

On 03/03/2026 (DD/MM/YYYY)

Name & capacity Andrzej Szyszka, Executive Director

Signature

For security reasons, the unsigned form in xlsx format should be transmitted to [email protected]. You can do this manually OR if you have MS Outlook at your disposal via the "Save & Send" button.

In addition, a signed copy in PDF format should also be transmitted.


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Chain of Controlled Undertakings:

  • GOLDMAN SACHS INTERNATIONAL IS CONTROLLED BY GOLDMAN SACHS GROUP UK LIMITED WHICH IS CONTROLLED BY GOLDMAN SACHS (UK) L.L.C. WHICH IS CONTROLLED BY THE GOLDMAN SACHS GROUP, INC.
  • GOLDMAN SACHS ASSET MANAGEMENT, L.P. IS CONTROLLED BY GSAM HOLDINGS LLC WHICH IS CONTROLLED BY THE GOLDMAN SACHS GROUP, INC.
  • GOLDMAN SACHS ASSET MANAGEMENT INTERNATIONAL IS CONTROLLED BY GOLDMAN SACHS ASSET MANAGEMENT INTERNATIONAL HOLDINGS LTD WHICH IS CONTROLLED BY GSAMI HOLDINGS II LTD. WHICH IS CONTROLLED BY GSAMI HOLDINGS I LLC WHICH IS CONTROLLED BY GSAM HOLDINGS LLC WHICH IS CONTROLLED BY THE GOLDMAN SACHS GROUP, INC.
  • GOLDMAN SACHS BANK EUROPE SE IS CONTROLLED BY GOLDMAN SACHS BANK USA WHICH IS CONTROLLED BY THE GOLDMAN SACHS GROUP, INC.
  • GOLDMAN SACHS & CO. LLC IS CONTROLLED BY THE GOLDMAN SACHS GROUP, INC.