Citadel Group

Major Shareholding Notification • Aug 8, 2025

National Storage Mechanism | Additional information

RNS Number : 6581U

Citadel Group

08 August 2025

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FORM 8.3

IRISH TAKEOVER PANEL

OPENING POSITION DISCLOSURE/DEALING DISCLOSURE UNDER RULE 8.3 OF THE IRISH TAKEOVER PANEL ACT, 1997, TAKEOVER

RULES, 2022 BY PERSONS WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE

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	MURAL ONCOLOGY PLC
(d)   If an exempt fund manager connected with an offeror/offeree, state this and specify identity of offeror/offeree (Note 1)	N/A
(e)   Date position held/dealing undertaken For an opening position disclosure, state the latest practicable date prior to the disclosure	7 August 2025
(f)    In addition to the company in 1(c) above, is the discloser also making disclosures in respect of any other party to the offer? If it is a cash offer or possible cash offer, state "N/A"	N/A

2.             INTERESTS AND SHORT POSITIONS

If there are interests and short positions to disclose in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 2 for each additional class of relevant security.

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

(Note 2)

Class of relevant security (Note 3)	Common Stock ISIN IE000LK2BOB4 $0.01 ordinary shares
	Interests		Short positions
Number	%	Number	%
(1)   Relevant securities owned and/or controlled	156,123	0.90	0	0.00
(2)   Cash-settled derivatives	0	0.00	23	0.00
(3)   Stock-settled derivatives (including options) and agreements to purchase/ sell	20,000	0.11	94,700	0.54
Total	176,123	1.01	94,723	0.54

All interests and all short positions should be disclosed.

Details of options including rights to subscribe for new securities and 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.

3.             DEALINGS (IF ANY) BY THE PERSON MAKING THE DISCLOSURE (Note 4)

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 (Note 5)
Common	Buy Transaction	321	1.6136 USD
Common	Buy Transaction	134	1.6200 USD
Common	Buy Transaction	72	1.6290 USD
Common	Buy Transaction	111	1.6430 USD
Common	Buy Transaction	294	1.6500 USD
Common	Buy Transaction	53	1.6562 USD
Common	Buy Transaction	800	1.6600 USD
Common	Buy Transaction	150	1.6630 USD
Common	Buy Transaction	1,900	1.6653 USD
Common	Buy Transaction	672	1.6800 USD
Common	Buy Transaction	75	1.6803 USD
Common	Buy Transaction	2,300	1.6805 USD
Common	Buy Transaction	1	1.6900 USD
Common	Buy Transaction	3,403	1.7002 USD
Common	Buy Transaction	4,000	1.7051 USD
Common	Buy Transaction	1	1.7084 USD
Common	Buy Transaction	1,086	1.7090 USD
Common	Buy Transaction	600	1.7117 USD
Common	Buy Transaction	204	1.7150 USD
Common	Buy Transaction	15,890	1.7191 USD
Common	Buy Transaction	3,287	1.7200 USD
Common	Buy Transaction	2,008	1.7296 USD
Common	Buy Transaction	3,106	1.7300 USD
Common	Buy Transaction	2,295	1.7474 USD
Common	Buy Transaction	144	1.7590 USD
Common	Buy Transaction	19	1.7621 USD
Common	Buy Transaction	6	1.7800 USD
Common	Sell Transaction	8	1.6400 USD
Common	Sell Transaction	3,100	1.6712 USD
Common	Sell Transaction	100	1.6720 USD
Common	Sell Transaction	1,563	1.6800 USD
Common	Sell Transaction	368	1.6851 USD
Common	Sell Transaction	100	1.6892 USD
Common	Sell Transaction	90	1.6896 USD
Common	Sell Transaction	52	1.6931 USD
Common	Sell Transaction	159	1.7082 USD
Common	Sell Transaction	539	1.7094 USD
Common	Sell Transaction	2,957	1.7111 USD
Common	Sell Transaction	202	1.7200 USD
Common	Sell Transaction	2,743	1.7227 USD
Common	Sell Transaction	4,600	1.7228 USD
Common	Sell Transaction	50	1.7298 USD
Common	Sell Transaction	257	1.7299 USD
Common	Sell Transaction	4,498	1.7300 USD
Common	Sell Transaction	1,903	1.7305 USD
Common	Sell Transaction	2,143	1.7400 USD
Common	Sell Transaction	3	1.7467 USD
Common	Sell Transaction	1,995	1.7500 USD
Common	Sell Transaction	1	1.7600 USD

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(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 (Note 6)	Price per unit (Note 5)

(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 (Note 6)	Exercise price per unit	Type e.g. American, European etc.	Expiry date	Option money paid/ received per unit
Common	Call Option	Buy Transaction	3,000	5.0000 USD	American	2027-01-15	0.0500 USD
Common	Call Option	Buy Transaction	7,000	2.5000 USD	American	2027-01-15	0.1000 USD
Common	Call Option	Buy Transaction	100	2.5000 USD	American	2027-01-15	0.1100 USD
Common	Call Option	Buy Transaction	1,900	2.5000 USD	American	2027-01-15	0.1500 USD
Common	Put Option	Buy Transaction	300	2.5000 USD	American	2025-08-15	0.9000 USD
Common	Call Option	Sell Transaction	1,000	5.0000 USD	American	2027-01-15	0.0100 USD
Common	Call Option	Sell Transaction	3,000	5.0000 USD	American	2027-01-15	0.0200 USD
Common	Call Option	Sell Transaction	1,000	5.0000 USD	American	2027-01-15	0.0300 USD
Common	Call Option	Sell Transaction	1,000	5.0000 USD	American	2027-01-15	0.0400 USD
Common	Call Option	Sell Transaction	3,000	5.0000 USD	American	2027-01-15	0.0500 USD
Common	Call Option	Sell Transaction	2,100	2.5000 USD	American	2027-01-15	0.1500 USD

(ii)           Exercise

Class of relevant security	Product description e.g. call option	Exercising/ exercised against	Number of securities	Exercise price per unit (Note 5)

(d)           Other dealings (including transactions in respect of new securities) (Note 3)

Class of relevant security	Nature of dealing e.g. subscription, conversion, exercise	Details	Price per unit (if applicable) (Note 5)

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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

Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating to the voting rights of any relevant securities under any option referred to on this form or relating to the voting rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is referenced. If none, this should be stated.
None

(c)           Attachments

Is a Supplemental Form 8 attached?	YES

Date of disclosure	8 August 2025
Contact name	Paula Santos
Telephone number	020 7645 9700

Public disclosures under Rule 8.3 of the Rules must be made to a Regulatory Information Service.

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SUPPLEMENTAL FORM 8

IRISH TAKEOVER PANEL

DISCLOSURE UNDER RULE 8.1, RULE 8.3, RULE 38.5(b) AND

RULE 38.6 OF THE IRISH TAKEOVER PANEL ACT, 1997,

TAKEOVER RULES, 2022

DETAILS OF OPEN STOCK-SETTLED DERIVATIVE (INCLUDING

OPTION) POSITIONS, AGREEMENTS TO PURCHASE OR SELL AND

RIGHTS TO SUBSCRIBE FOR NEW SECURITIES

1.             KEY INFORMATION

Full name of person making disclosure:	Citadel Group
Name of offeror/offeree in relation to whose relevant securities the disclosure relates:	MURAL ONCOLOGY PLC

2.             STOCK-SETTLED DERIVATIVES (INCLUDING OPTIONS)

Class of relevant security	Product description e.g. call option	Written or purchased	Number of securities to which option or derivative relates	Exercise price per unit	Type e.g. American, European etc.	Expiry date
Common	Put Option	Purchased	-200	5.0 USD	American	19/09/2025
Common	Put Option	Purchased	-4,800	2.5 USD	American	15/08/2025
Common	Call Option	Purchased	1,000	5.0 USD	American	20/03/2026
Common	Put Option	Purchased	-3,100	2.5 USD	American	19/12/2025
Common	Call Option	Purchased	2,000	7.5 USD	American	20/03/2026
Common	Put Option	Purchased	-7,200	2.5 USD	American	19/09/2025
Common	Put Option	Purchased	-200	7.5 USD	American	15/08/2025
Common	Call Option	Purchased	800	5.0 USD	American	19/12/2025
Common	Call Option	Purchased	400	2.5 USD	American	15/08/2025
Common	Put Option	Purchased	-50,700	2.5 USD	American	15/01/2027
Common	Put Option	Purchased	-200	5.0 USD	American	15/08/2025
Common	Call Option	Purchased	1,200	2.5 USD	American	15/01/2027
Common	Call Option	Purchased	14,600	5.0 USD	American	19/09/2025
Common	Call Option	Sold	-300	2.5 USD	American	20/03/2026
Common	Call Option	Sold	-4,600	2.5 USD	American	19/12/2025
Common	Call Option	Sold	-17,200	2.5 USD	American	19/09/2025
Common	Call Option	Sold	-200	7.5 USD	American	19/09/2025
Common	Call Option	Sold	-6,000	5.0 USD	American	15/01/2027

3.             AGREEMENTS TO PURCHASE OR SELL

Full details should be given so that the nature of the interest or position can be fully understood:

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4.             RIGHTS TO SUBSCRIBE FOR NEW SECURITIES (INCLUDING DIRECTORS' AND OTHER EMPLOYEE OPTIONS)

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

It is not necessary to provide details on a Supplemental Form with regard to cash-settled derivatives.

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

For full details of disclosure requirements, see Rule 8 of the Rules. If in doubt, consult the Panel.

References in these notes to "the Rules" are to the Irish Takeover Panel Act, 1997, Takeover Rules, 2022.

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