2) Issuer

1) Status of the notification

	Final

	Name SOLVAY
Identification number 0403-091-220

3) Reason for the notification

Acquisition or disposal of voting securities or voting rights
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)
BlackRock, Inc.	50 Hudson Yards, New York, NY, 10001, U.S.A.
BlackRock (Singapore) Limited	20 Anson Road #18-01, Singapore, 79912, Singapore
BlackRock Advisors (UK) Limited	12 Throgmorton Avenue, London, EC2N 2DL, U.K.
BlackRock Advisors, LLC	50 Hudson Yards, New York, NY, 10001, U.S.A.
BlackRock Asset Management Canada Limited	161 Bay Street, Suite 2500, Toronto, Ontario, M5J 2S1, Canada
BlackRock Asset Management Deutschland AG	Lenbachplatz 1 1st Floor, Munich, 80333-MN3, Germany
BlackRock Asset Management North Asia Limited	15/F, 16/F, 17/F Citibank Tower & 17/F ICBC Tower, 3 Garden Road, Central, Hong Kong
BlackRock Financial Management, Inc.	50 Hudson Yards, New York, NY, 10001, U.S.A.
BlackRock Fund Advisors	400 Howard Street, San Francisco, CA, 94105, U.S.A.
BlackRock Institutional Trust Company, National Association	400 Howard Street, San Francisco, CA, 94105, U.S.A.
BlackRock International Limited	Exchange Place One, 1 Semple Street, Edinburgh, EH3 8BL, U.K.
BlackRock Investment Management (Australia) Limited	Level 37 Chifley Tower, 2 Chifley Square, Sydney NSW 2000, Australia
BlackRock Investment Management (UK) Limited	12 Throgmorton Avenue, London, EC2N 2DL, U.K.
BlackRock Investment Management, LLC	1 University Square Drive, Princeton, NJ, 8540, U.S.A.
BlackRock Japan Co., Ltd.	1-8-3 Marunouchi Chiyoda-ku, Trust Tower Main, Tokyo, 100-8217, Japan
Aperio Group, LLC	3 Harbor Dr Suite 204, Sausalito, CA 94965, United States

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

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

² - ³ +

² +

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
BlackRock, Inc.	0	0	0	0.00%	0.00%
BlackRock (Singapore) Limited	56,258	51,822	0	0.05%	0.00%
BlackRock Advisors (UK) Limited	411,619	129,310	0	0.12%	0.00%
BlackRock Advisors, LLC	179,378	172,056	0	0.16%	0.00%
BlackRock Asset Management Canada Limited	127,231	123,024	0	0.12%	0.00%
BlackRock Asset Management Deutschland AG	113,737	112,972	0	0.11%	0.00%
BlackRock Asset Management North Asia Limited	4,090	4,111	0	0.00%	0.00%
BlackRock Financial Management, Inc.	199,345	207,035	0	0.20%	0.00%
BlackRock Fund Advisors	1,149,279	1,150,095	0	1.09%	0.00%
BlackRock Institutional Trust Company, National Association	1,534,303	1,527,473	0	1.44%	0.00%
BlackRock International Limited	46,072	32,407	0	0.03%	0.00%
BlackRock Investment Management (Australia) Limited	83,625	70,291	0	0.07%	0.00%
BlackRock Investment Management (UK) Limited	100,652	261,384	0	0.25%	0.00%
BlackRock Investment Management, LLC	95,761	96,151	0	0.09%	0.00%
BlackRock Japan Co., Ltd.	224,928	208,885	0	0.20%	0.00%
Aperio Group, LLC	21,657	22,152	0	0.02%	0.00%
Subtotal	4,347,936	4,169,168	0	3.94%	0.00%
TOTAL 4,169,168			0	3.94%	0.00%

Start with "groups" of holders. Add subtotals with S, 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
BlackRock Advisors (UK) Limited	Securities Lent		574,874	0.54%	physical	-
BlackRock Asset Management Canada Limited	Securities Lent		19,679	0.02%	physical	-
BlackRock Investment Management (UK) Limited	Securities Lent		108,760	0.10%	physical	-
BlackRock Investment Management, LLC	Securities Lent		11,597	0.01%	physical	-
BlackRock Japan Co., Ltd.	Securities Lent		54,483	0.05%	physical	-
BlackRock Advisors, LLC	Contract Difference		59,245	0.06%	cash	-
BlackRock Financial Management, Inc. Contract Difference			110,815	0.10%	cash	-
BlackRock Institutional Trust Company, National Association	Contract Difference		175,634	0.17%	cash	-
BlackRock Investment Management (UK) Limited	Contract Difference		3,145	0.00%	cash	-
BlackRock Investment Management, LLC	Contract Difference		667	0.00%	cash	-
Aperio Group, LLC	Depositary Receipt		44	0.00%		+
	TOTAL		1,118,943	1.06%

The totals will be updated once you have clicked on

TOTAL (A & B)		# of voting rights % of voting rights
	CALCULATE	5,288,111	4.99%

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

Please see the full chain of control in "Chain of Control" tab.

12) In case of proxy voting for only one GM

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

13) Additional information

The disclosure obligation arose due to total holdings in voting rights for BlackRock, Inc. going below 5%.

	Done at 12 Throgmorton Avenue, London EC2N 2DL, UK
On		14/09/2023 (DD/MM/YYYY)
	Name & capacity Jana Blumenstein, Director	Signature

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

Name

BlackRock, Inc. BlackRock Holdco 2, Inc. BlackRock Financial Management, Inc. BlackRock International Holdings, Inc. BR Jersey International Holdings L.P. BlackRock (Singapore) Holdco Pte. Ltd. BlackRock HK Holdco Limited BlackRock Lux Finco S.a.r.l. BlackRock Japan Holdings GK BlackRock Japan Co., Ltd.

BlackRock, Inc. Trident Merger, LLC BlackRock Investment Management, LLC

BlackRock, Inc. BlackRock Holdco 2, Inc. BlackRock Financial Management, Inc. BlackRock International Holdings, Inc. BR Jersey International Holdings L.P. BlackRock Holdco 3, LLC BlackRock Cayman 1 LP BlackRock Cayman West Bay Finco Limited BlackRock Cayman West Bay IV Limited BlackRock Group Limited BlackRock Finance Europe Limited BlackRock Investment Management (UK) Limited

BlackRock, Inc. BlackRock Holdco 2, Inc. BlackRock Financial Management, Inc. BlackRock International Holdings, Inc. BR Jersey International Holdings L.P. BlackRock Australia Holdco Pty. Ltd. BlackRock Investment Management (Australia) Limited

BlackRock, Inc. BlackRock Holdco 2, Inc. BlackRock Financial Management, Inc. BlackRock Holdco 4, LLC BlackRock Holdco 6, LLC BlackRock Delaware Holdings Inc. BlackRock Institutional Trust Company, National Association BlackRock, Inc. BlackRock Holdco 2, Inc. BlackRock Financial Management, Inc. BlackRock Holdco 4, LLC BlackRock Holdco 6, LLC BlackRock Delaware Holdings Inc. BlackRock Fund Advisors

BlackRock, Inc. BlackRock Holdco 2, Inc. BlackRock Financial Management, Inc.

BlackRock, Inc. BlackRock Holdco 2, Inc. BlackRock Financial Management, Inc. BlackRock Capital Holdings, Inc. BlackRock Advisors, LLC

BlackRock Cayman West Bay Finco Limited BlackRock Cayman West Bay IV Limited BlackRock Group Limited BlackRock Finance Europe Limited BlackRock Advisors (UK) Limited

BlackRock, Inc. Trident Merger, LLC BlackRock Investment Management, LLC Amethyst Intermediate, LLC Aperio Holdings, LLC Aperio Group, LLC

AI Terminal

Solvay SA

4005_rns_2023-09-20_f9e1bd70-52ba-410f-b921-ce5d92e44e14.pdf