RNS Number : 4928G

Citadel Group

01 June 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	29 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:	11,830	0.03	13,763	0.03
(2) Cash-settled derivatives:	618,133	1.72	14	0.00
(3) Stock-settled derivatives (including options) and agreements to purchase/sell:	0	0.00	0	0.00
TOTAL:	629,963	1.76	13,777	0.03

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	54	41.7000 EUR
Common	Buy Transaction	44	41.7200 EUR
Common	Buy Transaction	51	41.7400 EUR
Common	Buy Transaction	158	41.7600 EUR
Common	Buy Transaction	54	41.7800 EUR
Common	Buy Transaction	54	41.8800 EUR
Common	Buy Transaction	95	41.9800 EUR
Common	Buy Transaction	82	42.0000 EUR
Common	Buy Transaction	130	42.0200 EUR
Common	Buy Transaction	142	42.0800 EUR
Common	Buy Transaction	3,073	42.1200 EUR
Common	Buy Transaction	126	42.1400 EUR
Common	Buy Transaction	81	42.1600 EUR
Common	Buy Transaction	27	42.2200 EUR
Common	Buy Transaction	79	42.2400 EUR
Common	Buy Transaction	2	42.2600 EUR
Common	Buy Transaction	7	42.3000 EUR
Common	Buy Transaction	179	42.3400 EUR
Common	Buy Transaction	79	42.3600 EUR
Common	Buy Transaction	2	42.3800 EUR
Common	Buy Transaction	306	42.4000 EUR
Common	Buy Transaction	183	42.4200 EUR
Common	Buy Transaction	10	42.4400 EUR
Common	Buy Transaction	95	42.4600 EUR
Common	Buy Transaction	369	42.4800 EUR
Common	Buy Transaction	485	42.5000 EUR
Common	Buy Transaction	372	42.5200 EUR
Common	Buy Transaction	145	42.5400 EUR
Common	Buy Transaction	85	42.5600 EUR
Common	Buy Transaction	244	42.5800 EUR
Common	Buy Transaction	399	42.6000 EUR
Common	Buy Transaction	445	42.6200 EUR
Common	Buy Transaction	151	42.6400 EUR
Common	Buy Transaction	75	42.6600 EUR
Common	Buy Transaction	209	42.6800 EUR
Common	Buy Transaction	402	42.7000 EUR
Common	Buy Transaction	257	42.7200 EUR
Common	Buy Transaction	656	42.7400 EUR
Common	Buy Transaction	885	42.7600 EUR
Common	Buy Transaction	92	42.7700 EUR
Common	Buy Transaction	575	42.7765 EUR
Common	Buy Transaction	204	42.7800 EUR
Common	Buy Transaction	94	42.8100 EUR
Common	Buy Transaction	321	42.8200 EUR
Common	Buy Transaction	497	42.8400 EUR
Common	Buy Transaction	142	42.8600 EUR
Common	Buy Transaction	1,115	42.8800 EUR
Common	Buy Transaction	576	42.9000 EUR
Common	Buy Transaction	487	42.9200 EUR
Common	Buy Transaction	580	42.9400 EUR
Common	Buy Transaction	563	42.9600 EUR
Common	Buy Transaction	383	43.0000 EUR
Common	Buy Transaction	489	43.0100 EUR
Common	Buy Transaction	143	43.0200 EUR
Common	Buy Transaction	173	43.0400 EUR
Common	Buy Transaction	549	43.0600 EUR
Common	Buy Transaction	401	43.0800 EUR
Common	Buy Transaction	289	43.1000 EUR
Common	Buy Transaction	157	43.1600 EUR
Common	Buy Transaction	114	43.2000 EUR
Common	Buy Transaction	61	43.2200 EUR
Common	Buy Transaction	271	43.2600 EUR
Common	Buy Transaction	261	43.3200 EUR
Common	Buy Transaction	31	43.4600 EUR
Common	Buy Transaction	1	43.5000 EUR
Common	Sell Transaction	220	42.0200 EUR
Common	Sell Transaction	63	42.1000 EUR
Common	Sell Transaction	1,497	42.1200 EUR
Common	Sell Transaction	75	42.2000 EUR
Common	Sell Transaction	75	42.2200 EUR
Common	Sell Transaction	91	42.2400 EUR
Common	Sell Transaction	78	42.2600 EUR
Common	Sell Transaction	96	42.2800 EUR
Common	Sell Transaction	1	42.3000 EUR
Common	Sell Transaction	105	42.3200 EUR
Common	Sell Transaction	131	42.3400 EUR
Common	Sell Transaction	75	42.3600 EUR
Common	Sell Transaction	476	42.3800 EUR
Common	Sell Transaction	114	42.4200 EUR
Common	Sell Transaction	142	42.4400 EUR
Common	Sell Transaction	252	42.4600 EUR
Common	Sell Transaction	86	42.4800 EUR
Common	Sell Transaction	83	42.5000 EUR
Common	Sell Transaction	386	42.5200 EUR
Common	Sell Transaction	632	42.5400 EUR
Common	Sell Transaction	604	42.5600 EUR
Common	Sell Transaction	312	42.5800 EUR
Common	Sell Transaction	75	42.6000 EUR
Common	Sell Transaction	366	42.6200 EUR
Common	Sell Transaction	155	42.6400 EUR
Common	Sell Transaction	429	42.6600 EUR
Common	Sell Transaction	274	42.6800 EUR
Common	Sell Transaction	136	42.7000 EUR
Common	Sell Transaction	405	42.7200 EUR
Common	Sell Transaction	135	42.7400 EUR
Common	Sell Transaction	2	42.7600 EUR
Common	Sell Transaction	212	42.7800 EUR
Common	Sell Transaction	81	42.8000 EUR
Common	Sell Transaction	198	42.8200 EUR
Common	Sell Transaction	74	42.8400 EUR
Common	Sell Transaction	114	42.8600 EUR
Common	Sell Transaction	932	42.8800 EUR
Common	Sell Transaction	215	42.9000 EUR
Common	Sell Transaction	189	42.9200 EUR
Common	Sell Transaction	75	42.9400 EUR
Common	Sell Transaction	242	42.9800 EUR
Common	Sell Transaction	52	43.0000 EUR
Common	Sell Transaction	178	43.0200 EUR
Common	Sell Transaction	180	43.0300 EUR
Common	Sell Transaction	64	43.0400 EUR
Common	Sell Transaction	81	43.0600 EUR
Common	Sell Transaction	74	43.0800 EUR
Common	Sell Transaction	118	43.1000 EUR
Common	Sell Transaction	149	43.2800 EUR
Common	Sell Transaction	132	43.3400 EUR
Common	Sell Transaction	75	43.4000 EUR
Common	Sell Transaction	96	43.5000 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	388	42.1200 EUR
Common	CFD	Reducing long position	26,255	42.6861 EUR
Common	CFD	Increasing long position	36,631	42.7637 EUR
Common	CFD	Increasing long position	723	42.7786 EUR
Common	CFD	Reducing long position	170	43.0894 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:	1 June 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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