Solvay SA — Major Shareholding Notification 2026

Jan 29, 2026

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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 Downward crossing of the lowest threshold

³ - ¹³ +

4) Notification by

A parent undertaking or a controlling person

^A +

5) Persons subject to the notification requirement

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

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

26-01-2026 (DD/MM/YYYY)

8) Threshold that is crossed (in %)

3

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
UBS Europe SE	962
UBS Asset Management (Singapore) Ltd	732
UBS Asset Management (Europe) S.A.	34.806
UBS Fund Management (Switzerland) AG	80.334
Subtotal	116.834

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TOTAL

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 .

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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
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	TOTAL						_
•	The totals will be updated once you have clicked o	on	'
	TOTAL (A & B)			# of voting rights	% of voting rights
			CALCULATE
44) Full obein of controlled a		e e e e e e e e e e e e e e e e e e e	Id. a
11) Full chain of controlled u	ndertakings through which the holding i	s епестічету пе	IO , if applicable
	Please see full chain of control attached.
12) In case of proxy voting for	or only one GM
					ĺ	(DD/MM/YYYY)
Holder		will cease to hold / will hold again	0		voting rights as of		1
13) Additional information
The disclosure obligation arose due to t	ne total indirect holdings of UBS Group AG in voting rig	hts of Solvay SA held	d directly by controlled	undertakings falling	helow 3% on January	v 26 2026
aloosooalo ooligaasii alooo aao to a	coan maneet notating of ODE Cloup / C m Young ng	o. co.ray o,	a ancoay by controlled	arraor tararrigo raming	20.011 070 011 0411441	, 20, 2020.
Done at	Zurich, Switzerland
2	00.04.0000	(DD/MM/AAAAA
On	29-01-2026	(DD/MM/YYYY)
Name & capacity	Konstantina Georgaki			Georgati K
	Director Sjoerd Sluimer		Signature	< NO
	Authorized Officer		Signature	H			ı

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