Umicore — Major Shareholding Notification 2026

Apr 15, 2026

1. Issuer

1) Status of the notification

Final
Name UMICORE

3) Reason for the notification

Acquisition or disposal of voting securities or voting rights

4) Notification by

A parent undertaking or a controlling person

5) Persons subject to the notification requirement

Identification number 0401-574-852

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 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, NationalAssociation	400 Howard Street, San Francisco, CA, 94105, U.S.A.
BlackRock Investment Management (Australia)Limited	Level 12, 33 Alfred Street, 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.
Aperio Group, LLC	3 Harbor Dr Suite 204, Sausalito, CA 94965, U.S.A.

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

2 +

2 +

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 thesecurities	Linked tosecurities	Not linked to thesecurities	S
BlackRock, Inc.	0	0		0.00%		1
BlackRock (Singapore) Limited	5	175,004		0.07%		1
BlackRock Advisors (UK) Limited	1,839,906	1,373,661		0.56%		1
BlackRock Asset Management CanadaLimited	123,731	11,249		0.00%		1
BlackRock Asset ManagementDeutschland AG	663,482	661,808		0.27%		1
BlackRock Financial Management, Inc.	404	475		0.00%		1
BlackRock Fund Advisors	2,951,299	2,958,521		1.20%		1
BlackRock Institutional Trust Company,National Association	1,983,708	1,982,249		0.80%		1
BlackRock Investment Management(Australia) Limited	88,333	88,333		0.04%		1
BlackRock Investment Management(UK) Limited	4,647,050	4,675,219		1.90%		1
BlackRock Investment Management,LLC	56,262	49,415		0.02%		1
Aperio Group, LLC	15,002	15,002		0.01%		1
Subtotal	12,369,182	11,990,936		4.87%		S	+
	TOTAL	11,990,936	0	4.87%	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 equivalentfinancial instruments	Type of financial instrument		Expiration date Exercise period ordate	# of voting rightsthat may beacquired if theinstrument isexercised	% of voting rights	Settlement
BlackRock Asset Management CanadaLimited	Securities Lent			112,482	0.05%	physical	-
BlackRock Advisors, LLC	Contract for Difference			489,171	0.20%	cash	-
BlackRock Financial Management, Inc. Contract for Difference				519,668	0.21%	cash	-
BlackRock Institutional Trust Company,National Association	Contract for Difference			124,288	0.05%	cash	-
BlackRock Investment Management(UK) Limited	Contract for Difference			37,239	0.02%	cash	-
Aperio Group, LLC	Depositary Receipt			212,013	0.09%		+
	TOTAL			1,494,861	0.61%

The totals will be updated once you have clicked on

TOTAL (A & B)			# of voting rights % of voting rights
	CALCULATE	13,485,797	5.47%

1. 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)
will cease to hold /will hold again	0	voting rights as of

13) Additional information

The disclosure obligation arose due to voting rights attached to shares for BlackRock, Inc. going below 5%.
Done at 12 Throgmorton Avenue, London EC2N 2DL, UK

On		10/04/2026 (DD/MM/YYYY)
	Name & capacity Jana Blumenstein, 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.

1. Full chain of controlled undertakings through which the holding is effectively held, if applicable

Name

BlackRock, Inc. BlackRock Saturn Subco, LLC BlackRock Finance, Inc. Trident Merger, LLC BlackRock Investment Management, LLC

BlackRock, Inc. BlackRock Saturn Subco, LLC BlackRock Finance, 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 Investment Management (UK) Limited

BlackRock, Inc. BlackRock Saturn Subco, LLC BlackRock Finance, 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 Saturn Subco, LLC BlackRock Finance, 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 Saturn Subco, LLC BlackRock Finance, 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 Saturn Subco, LLC BlackRock Finance, Inc.

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

BlackRock, Inc. BlackRock Saturn Subco, LLC BlackRock Finance, 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 (Netherlands) B.V. BlackRock Asset Management Deutschland AG

BlackRock, Inc. BlackRock Saturn Subco, LLC BlackRock Finance, Inc. BlackRock Holdco 2, Inc. BlackRock Financial Management, Inc. BlackRock International Holdings, Inc. BlackRock Canada Holdings ULC BlackRock Asset Management Canada Limited

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

BlackRock, Inc. BlackRock Saturn Subco, LLC BlackRock Finance, 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 Advisors (UK) Limited

BlackRock, Inc. BlackRock Saturn Subco, LLC BlackRock Finance, 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 (Singapore) Limited

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