Solvay SA — Major Shareholding Notification 2026

Jan 28, 2026

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Transparency notification Form TR-1 BE PART I

1) Status of the notification
	Final	]
2) Issuer
	SOLVAY 0403-091-220
3) Reason for the notification	1
	Acquisition or disposal of voting securities or voting rigi	ints	- +
	Downward crossing of the lowest threshold
4) Notification by
	A parent undertaking or a controlling person		+
5) Persons subject to the not	tification requirement
	Name	Address (for legal entities)
	Citigroup Inc.	1209 North Orange Street in Wilmington, Delaware 19801, USA	+
6) Persons that dispose of vo	oting rights (only to be filled in if art. 7 of the Lav	w applies)
	Name	Address (for legal entities)
			+
•	Please continue entering the information in part II c persons referred to in Sections 5 and 6	concerning the Part II
7) Date on which the thresho	old is crossed
	22/01/2026	(DD/MM/YYYY)
8) Threshold that is crossed	(in %)
	3	1
0	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

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
Citigroup Inc.	0	0		0.00%
Citigroup Global Markets Limited	588,814	0		0.00%
Subtotal	588,814
TOTAL		0		0.00%

Please enter the denominator before filling in the data

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
				0	0.00%		+
	TOTAL
0	The totals will be updated once you have clicked or	n
	TOTAL (A & B)			# of voting rights	% of voting rights
			CALCULATE	0	0.00%
11) Full chain of controlled undertakings through which the holding is effectively held, if applicable Citigroup Inc. controls Citigroup Global Markets Holdings Inc., which controls Citigroup Financial Products Inc., which controls Citigroup Global Markets Holdings Bahamas Limited, which controls Citigroup Global Markets Limited.
12) In case of proxy voting for Holder 13) Additional information	or only one GM	will cease to hold / will hold again	0		voting rights as of	(DD/MM/YYYY)
Done at	Belfast
On	27/01/2026	(DD/MM/YYYY)
		1	I	7	7 / / /		1
Name & capacity	Craig Watson, Regulatory Operations		Signature	(, (	. Wats	on

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