Solvay SA — Major Shareholding Notification 2026

Jan 29, 2026

{0}------------------------------------------------

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

³ +

4) Notification by

A parent undertaking or a controlling person

² +

5) Persons subject to the notification requirement

Name	Address (for legal entities)
UBS Group AG	Bahnhofstrasse 45, 8001 Zürich	+

^A +

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

23/01/2026 (DD/MM/YYYY)

8) Threshold that is crossed (in %)

3

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
UBS Group AG		0		0.00%
UBS Europe SE		962		0.00%
UBS Asset Management (Singapore) Ltd		732		0.00%
UBS Asset Management (Europe) S.A.		34,806		0.03%
UBS Fund Management (Switzerland) AG		80,334		0.08%
Subtotal		116,834		0.11%

{1}------------------------------------------------

TOTAL 116,834 0 0.11% 0.00%

Start with "groups" of holders. Add subtotals with Σ, 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 .

{2}------------------------------------------------

BS AG Long Call Option 18/12/2026 300,000 0.28% physical	Equivalent financial instruments	Equivalent financial instruments After the transaction
BS AG		Type of financial instrument	Expiration date		that may be acquired if the instrument is	% of voting rights	Settlement
Short Put Option 19/06/2026 395,000 0.37% physical 18/12/2026 285,000 0.27% physical 285 AG Short Put Option 18/12/2026 285,000 0.27% physical 285 AG Equity Swaps 28/03/2028 635 0.00% cash 28/03/2028 635 0.00% cash 28/03/2028 635 0.00% cash 28/03/2028 635 0.00% physical 28/03/2028 635 0.00% physical 28/03/2028 635 0.00% physical 28/03/2028 635 0.00% physical 28/03/2028 635 0.00% physical 28/03/2028 635 0.00% physical 28/03/2028 635 0.00% physical 28/03/2028 635 0.00% physical 28/03/2028 635 0.00% physical 28/03/2028 635 0.00% physical 28/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/2026 63/03/202	BS AG	Long Call Option	19/06/2026		135,000	0.13%	physical
Shard Short Put Option 18/12/2026 285,000 0.27% physical 28/03/2028 635 0.00% cash 28/03/2028 635 0.00% cash 38/03/2028 635 0.00% cash 38/03/2028 635 0.01% physical 38/03/2028 635 0.01% physical 38/03/2028 635 0.01% physical 38/03/2028 635 0.01% physical 38/03/2028 635 0.01% physical 38/03/2028 635 0.01% physical 38/03/2028 635 0.01% physical 38/03/2028 635 0.01% physical 38/03/2028 635 0.01% physical 38/03/2028 635 0.00% cash 38/03/2028 630 0.00% cash 38/03/2028 630 0.00% cash 38/03/2028 630 0.00% cash 38/03/2028 630 0.00% cash 38/03/2028 630 0.00% cash 38/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028 63/03/2028	BS AG	Long Call Option	18/12/2026		300,000	0.28%	physical
Equity Swaps 28/03/2028 635 0.00% cash 8S Switzerland AG Right of use over shares At any time 9,298 0.01% physical 9S Switzerland AG Right of use over Reverse Convertible At any time 9,170 0.01% physical 9S SAG Right to Recall of Lent shares At any time 478,110 0.45% physical 9S Switzerland AG Right to Recall of Lent shares At any time 6,400 0.01% physical 9S SWitzerland AG Swaps on Baskets 30/06/2026 80 0.00% cash 9S SWitzerland AG Swaps on Baskets 01/06/2027 1,083,045 1.02% cash 9S AG Right to Substitute shares delivered as collaterals At any time 417,382 0.39% physical TOTAL 3,119,120 2.95% Total (A & B) # of voting rights % of voting rights	BS AG	Short Put Option	19/06/2026		395,000	0.37%	physical
Right of use over shares Right of use over Reverse Convertible At any time 9,298 0.01% physical At any time 9,170 0.01% physical At any time 9,170 0.01% physical At any time 478,110 0.45% physical Right to Recall of Lent shares At any time 6,400 0.01% physical At any time 6,400 0.01% physical So AG Swaps on Baskets 30/06/2026 80 0.00% cash So Switzerland AG Swaps on Baskets 01/06/2027 1,083,045 1,02% cash TOTAL 3,119,120 2.95% TOTAL (A & B) # of voting rights % of voting rights	BS AG	Short Put Option	18/12/2026		285,000	0.27%	physical
Right of use over Reverse Convertible At any time 9,170 0.01% physical At any time 478,110 0.45% physical 38 Switzerland AG Right to Recall of Lent shares At any time 6,400 0.01% physical 38 Switzerland AG Swaps on Baskets 30/06/2026 80 0.00% cash 38 Switzerland AG Swaps on Baskets 01/06/2027 1,083,045 1.02% cash 38 AG Right to Substitute shares delivered as collaterals At any time 417,382 0.39% physical TOTAL 3,119,120 2.95% The totals will be updated once you have clicked on TOTAL (A & B) # of voting rights # of voting rights	BS AG	Equity Swaps	28/03/2028		635	0.00%	cash
BS AG Right to Recall of Lent shares At any time 478,110 0.45% physical BS Switzerland AG Right to Recall of Lent shares At any time 6,400 0.01% physical BS AG Swaps on Baskets 30/06/2026 80 0.00% cash BS Switzerland AG Swaps on Baskets 01/06/2027 1,083,045 1.02% cash BS AG Right to Substitute shares delivered as collaterals At any time 417,382 0.39% physical TOTAL 3,119,120 2.95% TOTAL 3,119,120 2.95% TOTAL 6 & B) # of voting rights % of voting rights	BS Switzerland AG	Right of use over shares		At any time	9,298	0.01%	physical
BS Switzerland AG Right to Recall of Lent shares At any time 6,400 0.01% physical 8S AG Swaps on Baskets 30/06/2026 80 0.00% cash 8S Switzerland AG Swaps on Baskets 01/06/2027 1,083,045 1.02% cash 8S AG Right to Substitute shares delivered as collaterals At any time 417,382 0.39% physical TOTAL 3,119,120 2.95% The totals will be updated once you have clicked on TOTAL (A & B) # of voting rights % of voting rights	BS Switzerland AG	Right of use over Reverse Convertible		At any time	9,170	0.01%	physical
BS AG Swaps on Baskets 30/06/2026 80 0.00% cash BS Switzerland AG Swaps on Baskets 01/06/2027 1,083,045 1.02% cash BS AG Right to Substitute shares delivered as collaterals At any time 417,382 0.39% physical TOTAL 3,119,120 2.95% The totals will be updated once you have clicked on TOTAL # of voting rights % of voting rights	BS AG	Right to Recall of Lent shares		At any time	478,110	0.45%	physical
BS Switzerland AG Swaps on Baskets 01/06/2027 1,083,045 1.02% cash BS AG Right to Substitute shares delivered as collaterals At any time 417,382 0.39% physical TOTAL 3,119,120 2.95% The totals will be updated once you have clicked on TOTAL (A & B) # of voting rights % of voting rights	BS Switzerland AG	Right to Recall of Lent shares		At any time	6,400	0.01%	physical
Right to Substitute shares delivered as collaterals TOTAL Totals will be updated once you have clicked on TOTAL (A & B) # of voting rights % of voting rights	BS AG	Swaps on Baskets	30/06/2026		80	0.00%	cash
TOTAL 3,119,120 2.95% The totals will be updated once you have clicked on TOTAL (A & B) # of voting rights % of voting rights	BS Switzerland AG	Swaps on Baskets	01/06/2027		1,083,045	1.02%	cash
The totals will be updated once you have clicked on TOTAL (A & B) # of voting rights % of voting rights
CALCULATE 3,235,954 3.06%	BS AG	TOTAL	on	At any time			physical
	BS AG	TOTAL The totals will be updated once you have clicked of	on	At any time	3,119,120	2.95%	physical
	BS AG	TOTAL The totals will be updated once you have clicked of	on	At any time	3,119,120	2.95%	physical
	•	TOTAL The totals will be updated once you have clicked of		CALCULATE	3,119,120	2.95%	physical
Please see full chain of control attached.	•	TOTAL The totals will be updated once you have clicked of total (A & B) TOTAL (A & B)		CALCULATE	3,119,120	2.95%	physical
Please see full chain of control attached.	•	TOTAL The totals will be updated once you have clicked of total (A & B) TOTAL (A & B)		CALCULATE	3,119,120	2.95%	physical
Please see full chain of control attached. 12) In case of proxy voting for only one GM	1) Full chain of controlled u	TOTAL The totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals.		CALCULATE	3,119,120	2.95%	physical
	1) Full chain of controlled u	TOTAL The totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals will be updated once you have clicked of totals.		CALCULATE	3,119,120	2.95%

13) Additional information

disclosure obligation arose due to the indirect holdings in financial instrument of UBS Group AG in voting rights of Solway SA, held directly by controlled undertakings, going above 3% on 23rd.	January

Done at	Zurich, Switzerland
On	27/01/2026	(DD/MM/YYYY

{3}------------------------------------------------

Name & capacity Iwona Konwinska Associate Director Signature Sjoerd Sluimer Authorized Officer Signature

Signature	Kona	Kaunty
Signature	5	r e

{4}------------------------------------------------

11. Information in relation to the person subject to the notification obligation – organizational
UBS Group AG
UBS AG
UBS Asset Management AG
UBS Asset Management (Europe) S.A.
-
UBS Group AG
UBS AG
UBS Asset Management AG
UBS Asset Management (Singapore) Ltd
-
UBS Group AG
UBS AG
UBS Europe SE
-
UBS Group AG
UBS AG
UBS Asset Management AG
UBS Asset Management Switzerland AG
UBS Fund Management (Switzerland) AG
-
UBS Group AG
UBS AG
UBS Switzerland AG