Syensqo SA/NV

Major Shareholding Notification • Aug 19, 2025

Notification de participation par BlackRock Inc.

Bruxelles, Belgique – 19 août 2025 - 8:30 CEST

Conformément à la législation et réglementation en matière de transparence financière (loi du 2 mai 2007), BlackRock Inc. (12 Throgmorton Avenue, London EC2N 2DL, UK) a envoyé à Syensqo une notification de transparence indiquant qu'il avait franchi le seuil de 3%. Voici un résumé des mouvements:

Date à laquelle le seuil a	Droits de vote après la	Instruments financiers	Total
été franchi	transaction	équivalents après la transaction
12 août 2025	2.88%	0.77%	3.65%

La notification la plus récente, datée du 13 août 2025 et reçue le 14 août 2025, contient l'information suivante:

• Motif de la notification:
  • Acquisition ou cession de titres avec droit de vote ou de droits de vote
• Notification par: BlackRock Inc. Une entreprise mère ou une personne détenant le contrôle
• Date de dépassement de seuil : le 12 août 2025
• Seuil des droits de vote directs franchi: 3% à la baisse
• Dénominateur : 103 921 273
• Information additionnelle: L'obligation de déclaration est née du franchissement au-dessous de 3% des droits de vote attachés aux actions de BlackRock, Inc.
• Personne(s) tenue(s) à la notification:

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 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, U.S.A.

Détails de la notification

A) Voting rights	Previous notification	After the transaction
	# of voting rights		# of voting rights	% of voting rights
Holders of voting rights		Not linked to the Linked to securities securities		Linked to securities	Not linked to the securities
BlackRock, Inc.	0	0		0.00%
BlackRock (Singapore) Limited	4,355	4,355		0.00%
BlackRock Advisors (UK) Limited	208,980	101,335		0.10%
BlackRock Advisors, LLC	47,772	47,772		0.05%
BlackRock Asset Management Canada Limited	58,095	58,094		0.06%
BlackRock Asset Management Deutschland AG	188.417	188,580		0.18%
BlackRock Asset Management North Asia Limited	2,356	2,356		0.00%
BlackRock Capital Management, Inc.	28	0		0.00%
BlackRock Financial Management, Inc.	7,871	7,871		0.01%
BlackRock Fund Advisors	1,339,896	1,348,979		1.30%
BlackRock Institutional Trust Company, National Association	893,963	876,464		0.84%
BlackRock Investment Management (Australia) Limited	17,082	17,082		0.02%
BlackRock Investment Management (UK) Limited	179,476	130,323		0.13%
BlackRock Investment Management, LLC	98,102	96,845		0.09%
BlackRock Japan Co., Ltd.	82,690	82,690		0.08%
Aperio Group, LLC	29,698	29,927		0.03%
Subtotal	3,158,781	2,992,673		2.88%
TOTAL		2,992,673	0	2.88%	0.00%

After the transaction
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
Securities Lent			686,850	0.66%	physical
Securities Lent			112,034	0.11%	physical
Securities Lent			4,842	0.00%	physical
TOTAL			803,726	0.77%

TOTAL (A & B)			# of voting rights % of voting rights
	CALCULATE	3,796,399	3.65%

Les notifications de transparence et la chaîne complète des entreprises contrôlées par l'intermédiaire desquelles la participation est effectivement détenue sont disponibles dans la section Relations Investisseurs du site web de Syensqo.

Contacts

Investors & Analysts Media investor.relations@syensqo.com media.relations@syensqo.com Sherief Bakr +44 7920 575 989 Perrine Marchal +32 478 32 62 72 Bisser Alexandrov +33 607 635 280 Laetitia Schreiber +32 487 74 38 07 Loïc Flament +32 478 69 74 20 Robbin Moore-Randolph +1 470 493 2433

About Syensqo

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