Umicore

Major Shareholding Notification • Nov 4, 2025

Transparency notification Form TR-1 BE PART I

1) Status of the notification
	Final	]
2) Issuer
Nam Identification numbe	e UMICORE r 0401-574-852
3) Reason for the notification	on and a second
	Acquisition or disposal of voting securities or voting rig	phts	+
4) Notification by
	A person that notifies alone		+
5) Persons subject to the no	otification requirement
	Name	Address (for legal entities)
	Silchester International Investors LLP	The Metcalf, 3rd Floor, 83-85 Pall Mall, London, SW1Y 5ES, UK	+
6) Persons that dispose of v	voting rights (only to be filled in if art. 7 of the Law	y applies)
	Name	Address (for legal entities)
		part grounts for	+
0	Please continue entering the information in part II persons referred to in Sections 5 and 6	concerning the Part II
7) Date on which the thresh	old is crossed
	29/10/2025	(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
	246,400,000

10) Notified details

A) Voting rights	Previous notification	After the transaction
	# of voting rights	# of voting rights % of voting right			ing rights
Holders of voting rights	8	Linked to securities	Not linked to the securities	Linked to securities	Not linked to the securities
Silchester International Investors LLP	12,502,588	12,268,898	0	4.98%	0.00%
	TOTAL	12,268,898	0	4.98%	0.00%

Start with "groups" of holders. Add subtotals with $\sum$ , 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
							+
TOTAL			0	0.00%
0	The totals will be updated once you have clicked o	on
	TOTAL (A & B)			# of voting rights	% of voting rights
			CALCULATE	12,268,898	4.98%

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

Silchester International Investors LLP ("Silchester") acts as investment manager for certain commingled funds (our "Clients"). In acting for our Clients, Silchester is given full discretion over their investments and is empowered to vote on their behalf. Silchester does not act as our Clients' custodian and therefore shares are not held in our name but in the name of each Client's custodian bank. The Clients:

-The Silchester International Investors International Value Equity Trust (US Domiciled);
-The Silchester International Investors International Value Equity Taxable Trust (US Domiciled);
-The Silchester International Investors International Value Equity Exclusion Trust (US Domiciled);
-The Calleva Trust - International Equity Fund (Irish Domiciled);
-The Silchester International Investors (Ireland) Trust – International Equity Exclusion UCITS (Irish Domiciled).

12) In case of	f proxy voting t	for only one	GM
----------------	------------------	--------------	----

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

13) Additional information

Silchester International Investors LLP ("Silchester") acts as investment manager for certain commingled funds (or and is empowered to vote on their behalf. However, we do not act as our Clients' custodian and therefore shares	ur "Clients"). In acting for our Clients, Silchester is given full discretion over their investments are not held in our name but in the name of each Client's custodian bank.
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Done at London, UK
On	30/10/2025	(DD/MM/YYYY
Name & capacity Hannah Sprigings, Partner

Signature

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In addition, a signed copy in PDF format should also be transmitted.

Transparency notification Form TR-1 BE PART II

Persons subject to the notification requirement

Name	Address	Phone number	E-mail	Contact person (for legal entities)
Silchester International Investors	The Metcalf, 3rd Floor, 83-85 Pall Mall, London, SW1Y 5ES, Uk	0044 2075187138	compliancegroup@silchest	Hannah Sprigings

Mandatary

Name	Address	Phone number	E-mail	Contact person (for legal entities)

Invoicing data

Name	Address	Phone number	E-mail	Contact person (for legal entities)
Silchester International Investors The Metcalf, 3rd Floor, 83-85 Pall Mall, London, SW1Y 5ES, Ut 0044 2075187138 compliancegroup@silchest Annah Sprigings

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