Citadel Group — Major Shareholding Notification 2026

May 19, 2026

National Storage Mechanism | Additional information

RNS Number : 9421E

Citadel Group

19 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	18 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:	22,175	0.06	0	0.00
(2) Cash-settled derivatives:	565,113	1.58	14	0.00
(3) Stock-settled derivatives (including options) and agreements to purchase/sell:	0	0.00	0	0.00
TOTAL:	587,288	1.64	14	0.00

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	158	37.2400 EUR
Common	Buy Transaction	302	37.2800 EUR
Common	Buy Transaction	163	37.3000 EUR
Common	Buy Transaction	92	37.3200 EUR
Common	Buy Transaction	1,717	37.3400 EUR
Common	Buy Transaction	312	37.3600 EUR
Common	Buy Transaction	78	37.3800 EUR
Common	Buy Transaction	123	37.4000 EUR
Common	Buy Transaction	198	37.4400 EUR
Common	Buy Transaction	488	37.4800 EUR
Common	Buy Transaction	147	37.5000 EUR
Common	Buy Transaction	96	37.5200 EUR
Common	Buy Transaction	743	37.5400 EUR
Common	Buy Transaction	110	37.5600 EUR
Common	Buy Transaction	537	37.5800 EUR
Common	Buy Transaction	82	37.6000 EUR
Common	Buy Transaction	951	37.6200 EUR
Common	Buy Transaction	162	37.6400 EUR
Common	Buy Transaction	521	37.6600 EUR
Common	Buy Transaction	325	37.6800 EUR
Common	Buy Transaction	683	37.7000 EUR
Common	Buy Transaction	91	37.7200 EUR
Common	Buy Transaction	592	37.7400 EUR
Common	Buy Transaction	349	37.7600 EUR
Common	Buy Transaction	170	37.7800 EUR
Common	Buy Transaction	219	37.8000 EUR
Common	Buy Transaction	333	37.8200 EUR
Common	Buy Transaction	280	37.8400 EUR
Common	Buy Transaction	321	37.8600 EUR
Common	Buy Transaction	1,279	37.8800 EUR
Common	Buy Transaction	75	37.9000 EUR
Common	Buy Transaction	146	37.9200 EUR
Common	Buy Transaction	75	37.9400 EUR
Common	Buy Transaction	116	38.0200 EUR
Common	Buy Transaction	118	38.0400 EUR
Common	Buy Transaction	40	38.0800 EUR
Common	Buy Transaction	86	38.2400 EUR
Common	Buy Transaction	761	38.2600 EUR
Common	Buy Transaction	977	38.2800 EUR
Common	Buy Transaction	15	38.3000 EUR
Common	Buy Transaction	198	38.3400 EUR
Common	Buy Transaction	100	38.3600 EUR
Common	Sell Transaction	563	37.2400 EUR
Common	Sell Transaction	64	37.2600 EUR
Common	Sell Transaction	629	37.3000 EUR
Common	Sell Transaction	755	37.3200 EUR
Common	Sell Transaction	296	37.3600 EUR
Common	Sell Transaction	408	37.3800 EUR
Common	Sell Transaction	421	37.4000 EUR
Common	Sell Transaction	1,183	37.4200 EUR
Common	Sell Transaction	25	37.4400 EUR
Common	Sell Transaction	81	37.4600 EUR
Common	Sell Transaction	99	37.4800 EUR
Common	Sell Transaction	4,916	37.5000 EUR
Common	Sell Transaction	502	37.5200 EUR
Common	Sell Transaction	90	37.5400 EUR
Common	Sell Transaction	124	37.5600 EUR
Common	Sell Transaction	4,825	37.5710 EUR
Common	Sell Transaction	590	37.5800 EUR
Common	Sell Transaction	1,105	37.6000 EUR
Common	Sell Transaction	773	37.6200 EUR
Common	Sell Transaction	746	37.6600 EUR
Common	Sell Transaction	859	37.6800 EUR
Common	Sell Transaction	1,103	37.7000 EUR
Common	Sell Transaction	329	37.7400 EUR
Common	Sell Transaction	295	37.7600 EUR
Common	Sell Transaction	230	37.7800 EUR
Common	Sell Transaction	574	37.8000 EUR
Common	Sell Transaction	283	37.8200 EUR
Common	Sell Transaction	368	37.8400 EUR
Common	Sell Transaction	680	37.8600 EUR
Common	Sell Transaction	187	37.8800 EUR
Common	Sell Transaction	93	37.9000 EUR
Common	Sell Transaction	149	37.9200 EUR
Common	Sell Transaction	56	37.9400 EUR
Common	Sell Transaction	430	38.0000 EUR
Common	Sell Transaction	57	38.0400 EUR
Common	Sell Transaction	235	38.0800 EUR
Common	Sell Transaction	171	38.2800 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	1,385	37.3400 EUR
Common	CFD	Reducing long position	21,743	37.5434 EUR
Common	CFD	Increasing long position	434	37.5516 EUR
Common	CFD	Reducing long position	395	37.5610 EUR
Common	CFD	Reducing long position	1,990	37.6859 EUR
Common	CFD	Increasing long position	10,368	37.8140 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:	19 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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