Citadel Group — Major Shareholding Notification 2026

May 28, 2026

National Storage Mechanism | Additional information

RNS Number : 0568G

Citadel Group

28 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	27 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:	6,498	0.01	19,847	0.05
(2) Cash-settled derivatives:	612,582	1.71	14	0.00
(3) Stock-settled derivatives (including options) and agreements to purchase/sell:	0	0.00	0	0.00
TOTAL:	619,080	1.73	19,861	0.05

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	21	39.0800 EUR
Common	Buy Transaction	124	39.1200 EUR
Common	Buy Transaction	8	39.1400 EUR
Common	Buy Transaction	77	39.1800 EUR
Common	Buy Transaction	63	39.2000 EUR
Common	Buy Transaction	1,546	39.2200 EUR
Common	Buy Transaction	389	39.2400 EUR
Common	Buy Transaction	9	39.3200 EUR
Common	Buy Transaction	367	39.3400 EUR
Common	Buy Transaction	33	39.3600 EUR
Common	Buy Transaction	128	39.3800 EUR
Common	Buy Transaction	1	39.4800 EUR
Common	Buy Transaction	80	39.5000 EUR
Common	Buy Transaction	45	39.5200 EUR
Common	Buy Transaction	190	39.5400 EUR
Common	Buy Transaction	170	39.5600 EUR
Common	Buy Transaction	135	39.5800 EUR
Common	Buy Transaction	463	39.6000 EUR
Common	Buy Transaction	99	39.6600 EUR
Common	Buy Transaction	42	39.7133 EUR
Common	Buy Transaction	2	39.7200 EUR
Common	Buy Transaction	1,422	39.7400 EUR
Common	Buy Transaction	76	39.7600 EUR
Common	Buy Transaction	58	39.7800 EUR
Common	Buy Transaction	756	39.8000 EUR
Common	Buy Transaction	3,760	39.8400 EUR
Common	Buy Transaction	1,061	39.9200 EUR
Common	Sell Transaction	188	39.1000 EUR
Common	Sell Transaction	72	39.1200 EUR
Common	Sell Transaction	138	39.1400 EUR
Common	Sell Transaction	993	39.2000 EUR
Common	Sell Transaction	4,262	39.2200 EUR
Common	Sell Transaction	29	39.2400 EUR
Common	Sell Transaction	171	39.2600 EUR
Common	Sell Transaction	38	39.2800 EUR
Common	Sell Transaction	469	39.3000 EUR
Common	Sell Transaction	170	39.3200 EUR
Common	Sell Transaction	85	39.3400 EUR
Common	Sell Transaction	88	39.3600 EUR
Common	Sell Transaction	69	39.3800 EUR
Common	Sell Transaction	262	39.4000 EUR
Common	Sell Transaction	536	39.4400 EUR
Common	Sell Transaction	73	39.4600 EUR
Common	Sell Transaction	78	39.5000 EUR
Common	Sell Transaction	215	39.5200 EUR
Common	Sell Transaction	123	39.5400 EUR
Common	Sell Transaction	427	39.5600 EUR
Common	Sell Transaction	532	39.5800 EUR
Common	Sell Transaction	89	39.6000 EUR
Common	Sell Transaction	75	39.6200 EUR
Common	Sell Transaction	84	39.6400 EUR
Common	Sell Transaction	468	39.6600 EUR
Common	Sell Transaction	204	39.6800 EUR
Common	Sell Transaction	464	39.7000 EUR
Common	Sell Transaction	296	39.7200 EUR
Common	Sell Transaction	38	39.7400 EUR
Common	Sell Transaction	2	39.7600 EUR
Common	Sell Transaction	158	39.9000 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	Increasing long position	6,870	39.3436 EUR
Common	CFD	Increasing long position	1,416	39.4400 EUR
Common	CFD	Increasing long position	6,998	39.4483 EUR
Common	CFD	Reducing long position	8,937	39.4891 EUR
Common	CFD	Increasing long position	3,478	39.5264 EUR
Common	CFD	Reducing long position	275	39.6446 EUR
Common	CFD	Reducing long position	580	39.6579 EUR
Common	CFD	Reducing long position	142	39.6900 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:	28 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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