Citadel Group — Major Shareholding Notification 2026

May 29, 2026

National Storage Mechanism | Additional information

RNS Number : 2807G

Citadel Group

29 May 2026

FORM 8.3

PUBLIC OPENING POSITION DISCLOSURE/DEALING DISCLOSURE BY

A PERSON WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE

Rule 8.3 of the Takeover Code (the "Code")

1.         KEY INFORMATION

(a) Full name of discloser:	Citadel Group
(b) Owner or controller of interests and short positions disclosed, if different from 1(a):      The naming of nominee or vehicle companies is insufficient.  For a trust, the trustee(s), settlor and beneficiaries must be named.	N/A
(c) Name of offeror/offeree in relation to whose relevant securities this form relates:      Use a separate form for each offeror/offeree	AMG CRITICAL MATERIALS N.V.
(d) If an exempt fund manager connected with an offeror/offeree, state this and specify identity of offeror/offeree:	N/A
(e) Date position held/dealing undertaken:      For an opening position disclosure, state the latest practicable date prior to the disclosure	28 May 2026
(f)  In addition to the company in 1(c) above, is the discloser making disclosures in respect of any other party to the offer?      If it is a cash offer or possible cash offer, state "N/A"	NO

2.         POSITIONS OF THE PERSON MAKING THE DISCLOSURE

If there are positions or rights to subscribe to disclose in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 2(a) or (b) (as appropriate) for each additional class of relevant security.

(a)        Interests and short positions in the relevant securities of the offeror or offeree to which the disclosure relates following the dealing (if any)

Class of relevant security:	ISIN NL0000888691 EUR 0.02 ordinary
	Interests		Short positions
	Number	%	Number	%
(1) Relevant securities owned and/or controlled:	7,719	0.02	17,411	0.04
(2) Cash-settled derivatives:	607,592	1.69	14	0.00
(3) Stock-settled derivatives (including options) and agreements to purchase/sell:	0	0.00	0	0.00
TOTAL:	615,311	1.72	17,425	0.04

All interests and all short positions should be disclosed.

Details of any open stock-settled derivative positions (including traded options), or agreements to purchase or sell relevant securities, should be given on a Supplemental Form 8 (Open Positions).

(b)        Rights to subscribe for new securities (including directors' and other employee options)

Class of relevant security in relation to which subscription right exists:	N/A
Details, including nature of the rights concerned and relevant percentages:	N/A

3.         DEALINGS (IF ANY) BY THE PERSON MAKING THE DISCLOSURE

Where there have been dealings in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 3(a), (b), (c) or (d) (as appropriate) for each additional class of relevant security dealt in.

The currency of all prices and other monetary amounts should be stated.

(a)        Purchases and sales

Class of relevant security	Purchase/sale	Number of securities	Price per unit
Common	Buy Transaction	116	38.4400 EUR
Common	Buy Transaction	862	38.8000 EUR
Common	Buy Transaction	9	38.9400 EUR
Common	Buy Transaction	320	39.1000 EUR
Common	Buy Transaction	237	39.1200 EUR
Common	Buy Transaction	420	39.1400 EUR
Common	Buy Transaction	235	39.1800 EUR
Common	Buy Transaction	290	39.2000 EUR
Common	Buy Transaction	352	39.2200 EUR
Common	Buy Transaction	513	39.2400 EUR
Common	Buy Transaction	358	39.2600 EUR
Common	Buy Transaction	64	39.3200 EUR
Common	Buy Transaction	14	39.3400 EUR
Common	Buy Transaction	866	39.3800 EUR
Common	Buy Transaction	112	39.4000 EUR
Common	Buy Transaction	408	39.4200 EUR
Common	Buy Transaction	619	39.4400 EUR
Common	Buy Transaction	506	39.4600 EUR
Common	Buy Transaction	265	39.4800 EUR
Common	Buy Transaction	3,920	39.5000 EUR
Common	Buy Transaction	1,795	39.5021 EUR
Common	Buy Transaction	152	39.5400 EUR
Common	Buy Transaction	331	39.5600 EUR
Common	Buy Transaction	154	39.5800 EUR
Common	Buy Transaction	46	39.6000 EUR
Common	Buy Transaction	599	39.6600 EUR
Common	Buy Transaction	286	39.6800 EUR
Common	Buy Transaction	257	39.7200 EUR
Common	Buy Transaction	302	39.7400 EUR
Common	Buy Transaction	1,087	39.7600 EUR
Common	Buy Transaction	582	39.7800 EUR
Common	Buy Transaction	216	39.8200 EUR
Common	Buy Transaction	600	39.8600 EUR
Common	Buy Transaction	474	39.8800 EUR
Common	Buy Transaction	1,150	39.9200 EUR
Common	Buy Transaction	79	39.9800 EUR
Common	Buy Transaction	641	40.0400 EUR
Common	Sell Transaction	20	38.5000 EUR
Common	Sell Transaction	81	39.0000 EUR
Common	Sell Transaction	75	39.0200 EUR
Common	Sell Transaction	226	39.0600 EUR
Common	Sell Transaction	189	39.0800 EUR
Common	Sell Transaction	741	39.1000 EUR
Common	Sell Transaction	149	39.1200 EUR
Common	Sell Transaction	914	39.1400 EUR
Common	Sell Transaction	363	39.1600 EUR
Common	Sell Transaction	354	39.1800 EUR
Common	Sell Transaction	192	39.2000 EUR
Common	Sell Transaction	396	39.2200 EUR
Common	Sell Transaction	1,023	39.2400 EUR
Common	Sell Transaction	121	39.2600 EUR
Common	Sell Transaction	90	39.2800 EUR
Common	Sell Transaction	298	39.3000 EUR
Common	Sell Transaction	454	39.3200 EUR
Common	Sell Transaction	310	39.3400 EUR
Common	Sell Transaction	7	39.3800 EUR
Common	Sell Transaction	191	39.4000 EUR
Common	Sell Transaction	3	39.4200 EUR
Common	Sell Transaction	58	39.4400 EUR
Common	Sell Transaction	53	39.4600 EUR
Common	Sell Transaction	196	39.4800 EUR
Common	Sell Transaction	476	39.5000 EUR
Common	Sell Transaction	1,407	39.5200 EUR
Common	Sell Transaction	80	39.5600 EUR
Common	Sell Transaction	281	39.6400 EUR
Common	Sell Transaction	979	39.6600 EUR
Common	Sell Transaction	834	39.6800 EUR
Common	Sell Transaction	185	39.7000 EUR
Common	Sell Transaction	6	39.7200 EUR
Common	Sell Transaction	141	39.7400 EUR
Common	Sell Transaction	683	39.7800 EUR
Common	Sell Transaction	329	39.8000 EUR
Common	Sell Transaction	28	39.8400 EUR
Common	Sell Transaction	137	39.8600 EUR
Common	Sell Transaction	79	39.8800 EUR
Common	Sell Transaction	3,431	40.0400 EUR

(b)        Cash-settled derivative transactions

Class of relevant security	Product description e.g. CFD	Nature of dealing e.g. opening/closing a long/short position, increasing/reducing a long/short position	Number of reference securities	Price per unit
Common	CFD	Reducing long position	245	39.0000 EUR
Common	CFD	Increasing long position	73	39.0600 EUR
Common	CFD	Reducing long position	277	39.2795 EUR
Common	CFD	Increasing long position	3,689	39.2893 EUR
Common	CFD	Increasing long position	299	39.3066 EUR
Common	CFD	Increasing long position	1,113	39.3199 EUR
Common	CFD	Reducing long position	4,922	39.4311 EUR
Common	CFD	Reducing long position	3,352	39.4822 EUR
Common	CFD	Reducing long position	483	39.5179 EUR
Common	CFD	Increasing long position	79	39.7800 EUR
Common	CFD	Increasing long position	1,564	39.8866 EUR
Common	CFD	Reducing long position	2,528	40.0400 EUR

(c)        Stock-settled derivative transactions (including options)

(i)         Writing, selling, purchasing or varying

Class of relevant security	Product description e.g. call option	Writing, purchasing, selling, varying etc.	Number of securities to which option relates	Exercise price per unit	Type e.g. American, European etc.	Expiry date	Option money paid/ received per unit

(ii)        Exercise

Class of relevant security	Product description e.g. call option	Exercising/ exercised against	Number of securities	Exercise price per unit

(d)        Other dealings (including subscribing for new securities)

Class of relevant security	Nature of dealing e.g. subscription, conversion	Details	Price per unit (if applicable)

4.         OTHER INFORMATION

(a)        Indemnity and other dealing arrangements

Details of any indemnity or option arrangement, or any agreement or understanding, formal or informal, relating to relevant securities which may be an inducement to deal or refrain from dealing entered into by the person making the disclosure and any party to the offer or any person acting in concert with a party to the offer: Irrevocable commitments and letters of intent should not be included.  If there are no such agreements, arrangements or understandings, state "none"
None

(b)        Agreements, arrangements or understandings relating to options or derivatives

Details of any agreement, arrangement or understanding, formal or informal, between the person making the disclosure and any other person relating to: (i)  the voting rights of any relevant securities under any option; or (ii) the voting rights or future acquisition or disposal of any relevant securities to which any derivative is referenced: If there are no such agreements, arrangements or understandings, state "none"
None

(c)        Attachments

Is a Supplemental Form 8 (Open Positions) attached?	NO

Date of disclosure:	29 May 2026
Contact name:	Paula Santos
Telephone number*:	020 7645 9700

Public disclosures under Rule 8 of the Code must be made to a Regulatory Information Service.

The Panel's Market Surveillance Unit is available for consultation in relation to the Code's disclosure requirements on +44 (0)20 7638 0129.

*If the discloser is a natural person, a telephone number does not need to be included, provided contact information has been provided to the Panel's Market Surveillance Unit.

The Code can be viewed on the Panel's website at www.thetakeoverpanel.org.uk.

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