Solvay SA

Major Shareholding Notification • Jun 30, 2025

1) Status of the notification

1) Status of the notification
	Final
2) Issuer
	Name SOLVAY
Identification number 0403-091-220
3) Reason for the notification			0
	Acquisition or disposal of financial instruments that are treated as voting securities		+ 3
4) Notification by			0
	A parent undertaking or a controlling person		+ 2
5) Persons subject to the notification requirement
	Name	Address (for legal entities)	0
	The Goldman Sachs Group, Inc	Corporation Truse Center, 1209 Orange Street, Wilmimgton, 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)
			+ A
	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
		19/06/2025 (DD/MM/YYYY)
8) Threshold that is crossed (in %)
	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	S
The Goldman Sachs Group, Inc.		0		0.00%		1
Goldman Sachs Asset Management, L.P.		27,905		0.03%		1
Goldman Sachs Asset Management International		362		0.00%		1
Subtotal		28,267		0.03%		S
	TOTAL	28,267	0	0.03%	0.00%

L 17
11
1

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 .

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	30/06/2037		4,500,000	4.25%	cash	-
Goldman Sachs Bank Europe SE	Call Warrant	31/12/2030		994	0.00%	cash	-
Goldman Sachs Bank Europe SE	Call Warrant	31/12/2030		890	0.00%	cash	-
Goldman Sachs Bank Europe SE	Call Warrant	31/12/2030		700	0.00%	cash	-
Goldman Sachs Bank Europe SE	Call Warrant	31/12/2030		460	0.00%	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		271	0.00%	cash	-
Goldman Sachs Bank Europe SE	Call Warrant	31/12/2030		200	0.00%	cash	-
Goldman Sachs Bank Europe SE	Call Warrant	31/12/2030		135	0.00%	cash	-
Goldman Sachs Finance Corp International LTD	Swap	30/04/2035		110,392	0.10%	cash	-
Goldman Sachs Finance Corp International LTD	Swap	25/09/2034		85,680	0.08%	cash	-
Goldman Sachs Finance Corp International LTD	Swap	10/04/2035		76,352	0.07%	cash	-
Goldman Sachs Finance Corp International LTD	Swap	14/04/2037		19,840	0.02%	cash	-
Goldman Sachs Finance Corp International LTD	Swap	27/09/2034		15,515	0.01%	cash	-
Goldman Sachs Finance Corp	Swap	22/09/2031		9,992	0.01%	cash	-
International LTD Goldman Sachs Finance Corp	Swap	14/04/2037		7,002	0.01%	cash	-
International LTD Goldman Sachs Finance Corp	Swap	14/04/2037		5,602	0.01%	cash	-
International LTD Goldman Sachs Finance Corp	Swap	14/04/2037		4,435	0.00%	cash	-
International LTD Goldman Sachs Finance Corp	Swap	14/04/2037		2,801	0.00%	cash	-
International LTD Goldman Sachs Finance Corp	Swap	14/04/2037		1,400	0.00%	cash	-
International LTD Goldman Sachs Finance Corp	Swap	14/04/2037		1,400	0.00%	cash	-
International LTD Goldman Sachs Finance Corp	Swap	14/04/2037		1,400	0.00%	cash	-
International LTD Goldman Sachs International	Swap	11/06/2035		114,481	0.11%	cash	-
Goldman Sachs International	Swap	29/05/2028		109,886	0.10%	cash	-
Goldman Sachs International	Swap	13/06/2035		49,049	0.05%	cash	-
	Swap	11/12/2025		37,853	0.04%	cash
Goldman Sachs International							-
Goldman Sachs International	Swap	27/03/2028		35,898	0.03%	cash	-
Goldman Sachs International	Swap	11/06/2035		32,846	0.03%	cash	-
Goldman Sachs International	Swap	20/03/2028		29,908	0.03%	cash	-
Goldman Sachs International	Swap	08/05/2035		24,202	0.02%	cash	-
Goldman Sachs International	Swap	13/06/2035		23,172	0.02%	cash	-
Goldman Sachs International	Swap	06/06/2035		22,990	0.02%	cash	-
Goldman Sachs International	Swap	11/06/2035		22,893	0.02%	cash	-
Goldman Sachs International	Swap	11/11/2027		20,244	0.02%	cash	-
Goldman Sachs International	Swap	18/06/2035		16,613	0.02%	cash	-
Goldman Sachs International	Swap	22/05/2035		15,144	0.01%	cash	-
Goldman Sachs International	Swap	08/12/2025		13,015	0.01%	cash	-
Goldman Sachs International	Swap	18/04/2028		12,743	0.01%	cash	-
Goldman Sachs International	Swap	13/11/2034		10,595	0.01%	cash	-
Goldman Sachs International	Swap	16/07/2035		10,475	0.01%	cash	-
Goldman Sachs International	Swap	29/05/2035		7,586	0.01%	cash	-
Goldman Sachs International	Swap	08/05/2035		7,152	0.01%	cash	-
Goldman Sachs International	Swap	07/03/2029		7,026	0.01%	cash	-
Goldman Sachs International	Swap	11/06/2035		6,015	0.01%	cash	-
Goldman Sachs International	Swap	24/05/2027		5,863	0.01%	cash	-

TOTAL			5,839,068	5.51%
Goldman Sachs & Co. LLC	Securities Lending	Open		2,894	0.00%	physical	+
Goldman Sachs Bank Europe SE	Securities Lending	Open		4,294	0.00%	physical	-
Goldman Sachs International	Securities Lending	Open		304,422	0.29%	physical	-
Goldman Sachs International	Swap	18/06/2030		78	0.00%	cash	-
Goldman Sachs International	Swap	29/05/2026		104	0.00%	cash	-
Goldman Sachs International	Swap	15/04/2026		113	0.00%	cash	-
Goldman Sachs International	Swap	15/04/2026		143	0.00%	cash	-
Goldman Sachs International	Swap	15/04/2026		197	0.00%	cash	-
Goldman Sachs International	Swap	15/04/2026		243	0.00%	cash	-
Goldman Sachs International	Swap	18/06/2035		284	0.00%	cash	-
Goldman Sachs International	Swap	08/05/2035		549	0.00%	cash	-
Goldman Sachs International	Swap	15/04/2026		560	0.00%	cash	-
Goldman Sachs International	Swap	06/11/2034		588	0.00%	cash	-
Goldman Sachs International	Swap	07/07/2032		635	0.00%	cash	-
Goldman Sachs International	Swap	03/08/2026		684	0.00%	cash	-
Goldman Sachs International	Swap	03/08/2026		798	0.00%	cash	-
Goldman Sachs International	Swap	05/06/2028		888	0.00%	cash	-
Goldman Sachs International	Swap	08/11/2027		966	0.00%	cash	-
Goldman Sachs International	Swap	24/07/2025		1,400	0.00%	cash	-
Goldman Sachs International	Swap	14/04/2037		1,400	0.00%	cash	-
Goldman Sachs International	Swap	14/04/2037		1,400	0.00%	cash	-
Goldman Sachs International	Swap	26/07/2034		1,423	0.00%	cash	-
Goldman Sachs International	Swap	03/08/2026		1,741	0.00%	cash	-
Goldman Sachs International	Swap	24/05/2027		1,747	0.00%	cash	-
Goldman Sachs International	Swap	04/09/2034		1,815	0.00%	cash	-
Goldman Sachs International	Swap	14/05/2035		2,052	0.00%	cash	-
Goldman Sachs International	Swap	28/02/2028		2,174	0.00%	cash	-
Goldman Sachs International	Swap	25/02/2028		2,539	0.00%	cash	-
Goldman Sachs International	Swap	28/05/2035		2,968	0.00%	cash	-
Goldman Sachs International	Swap	24/05/2027		3,868	0.00%	cash	-
Goldman Sachs International	Swap	08/12/2025		4,056	0.00%	cash	-
Goldman Sachs International	Swap	14/05/2035		5,089	0.00%	cash	-
Goldman Sachs International	Swap	15/06/2026		5,447	0.01%	cash	-

The totals will be updated once you have clicked on

TOTAL (A & B)		# of voting rights % of voting rights
	CALCULATE	5,867,335	5.54%

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

Please refer to Annexure - Structured Chart

				(DD/MM/YYYY)
Holder	will cease to hold / will hold again	0	voting rights as of
13) Additional information
"Call Warrants" and "Swaps" mentioned in rows 63 to 137- these are held by the corresponding entities where Goldman Sachs has a long exposure

	Done at London
On		25/06/2025 (DD/MM/YYYY)
	Name & capacity Oluwatobi Amusan, Executive Director		Signature

For security reasons, the unsigned form in xlsx format should be transmitted to trp.fin@fsma.be. 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.

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 FINANCE CORP INTERNATIONAL LTD WHICH IS CONTROLLED BY GS GLOBAL MARKETS, INC. WHICH IS CONTROLLED BY THE GOLDMAN SACHS GROUP, INC.

• GOLDMAN SACHS & CO. LLC IS CONTROLLED BY THE GOLDMAN SACHS GROUP, INC.