Norsk Hydro ASA

Major Shareholding Notification • Oct 21, 2025

Standard form for notification of major holdings

NOTIFICATION OF MAJOR HOLDINGS (to be sent to the relevant issuer and to the NOR-FSA)

1. Identity of the issuer: NORSK HYDRO Drammensveien 264 Oslo NO-03
Norway LEI: 549300N1SDN71ZZ8BO45
		2. Reason for the notification (please tick the appropriate box or boxes):
☐ Other (please specify):	☒ An acquisition or disposal of shares or voting rights ☐ An acquisition or disposal of financial instruments	☐ An event changing the breakdown of shares or voting rights
	3. Details of person subject to the notification obligation:
Name: BlackRock, Inc.	City and country of residence: Wilmington, DE U.S.A
	4. Full name of shareholder(s) (if different from 3.):
20.10.2025	5. Date on which the threshold was crossed or reached:
		6. Total positions of person(s) subject to the notification obligation:
	% of shares and voting rights (total of 7.A)	% of shares and voting rights through financial instruments (total of 7.B)	Total of both in % (7.A + 7.B)	Total number of shares and voting rights of issuer
Resulting situation on the date on which	4.99% shares	0.35% shares	5.34% shares	1,978,489,136 shares
threshold was crossed or reached	4.99% voting rights	0.35% voting rights	5.34% voting rights	1,978,489,136 voting rights
Position of previous notification (if	5.01% shares	0.32% shares	5.33% shares
applicable)	5.01% voting rights	0.32% voting rights	5.33% voting rights

7. Notified details of the resulting situation on the date on which the threshold was crossed or reached:

A: Shares and voting rights

Class/type of shares		Number of shares and voting rights		% of shares and voting rights
ISIN code (if possible)	Direct (SMA 9:5)	Indirect (SMA 9:6 and 9:7)	Direct (SMA 9:5)	Indirect (SMA 9:6 and 9:7)
NO0005052605		98,843,100 shares		4.99% shares
		98,843,100 voting rights		4.99% voting rights
SUBTOTAL A		98,843,100 shares	4.99% shares
		98,843,100 voting rights	4.99% voting rights

B: Financial Instruments according to SMA 9:6a

Type of financial instrument	Expiration date	Exercise/ Conversion Period	Physical or cash settlement	Number of shares and voting rights	% of shares and voting rights
American Depositary Receipt (US6565316055)	N/A	N/A	Physical	4,502,174 shares 4,502,174 voting rights	0.22% shares 0.22% voting rights
Securities Lent	N/A	N/A	Physical	821,496 shares 821,496 voting rights	0.04% shares 0.04% voting rights
CFD	N/A	N/A	Cash	1,615,464 shares 1,615,464 voting rights	0.08% shares 0.08% voting rights
			SUBTOTAL B	6,939,134 shares 6,939,134 voting rights	0.35% shares 0.35% voting rights

8. Information in relation to the person subject to the notification obligation (please tick the applicable box):
(underlying) issuer.	☐ Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the
legal entity:	☒ Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or
% of shares and voting % of shares and voting Name rights through Total of both rights financial instruments
See Annex

10. Additional information:

The disclosure obligation arose due to voting rights attached to shares and votes for BlackRock, Inc. going below 5%.

1. In case of proxy voting: [name of the proxy holder] will cease to hold [% and number] voting rights as of

Done at 12 Throgmorton Avenue, London, EC2N 2DL, U.K. on 21 October 2025

Annex

Full chain of controlled undertakings starting with the ultimate controlling natural person or legal entity;

Name	% of shares and voting rights	% of shares and voting rights through financial instruments	Total of both
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 HK Holdco Limited
BlackRock Lux Finco S.a.r.l.
BlackRock Japan Holdings GK
BlackRock Japan Co., Ltd.			Below 5%
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
Trident Merger, LLC
BlackRock Investment Management, LLC			Below 5%
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 Finance Europe Limited
BlackRock Investment Management (UK) Limited			Below 5%
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			Below 5%
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 International Limited	Below 5%
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	Below 5%
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	Below 5%
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.	Below 5%
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 HK Holdco Limited
BlackRock Asset Management North Asia Limited	Below 5%
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 Finance Europe Limited
BlackRock (Netherlands) B.V.
BlackRock Asset Management Deutschland AG		Below 5%
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		Below 5%
BlackRock, Inc.
BlackRock Saturn Subco, LLC
BlackRock Finance, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock Capital Holdings, Inc.
BlackRock Advisors, LLC		Below 5%
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 Finance Europe Limited
BlackRock Advisors (UK) Limited		Below 5%
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	Below 5%
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 Finance Europe Limited
BlackRock (Netherlands) B.V.	Below 5%
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	Below 5%

Annex: Notification of major holdings (only to be filed with the NOR-FSA)