RNS Number : 0846A

Citadel Group

19 May 2023

Ap27

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	HORIZON THERAPEUTICS 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	18 May 2023
(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.

Ap28

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 IE00BQPVQZ61
	Interests		Short positions
	Number	%	Number	%
(1)   Relevant securities owned and/or controlled	4,699,121	2.05	1,384	0.00
(2)   Cash-settled derivatives	0	0.00	0	0.00
(3)   Stock-settled derivatives (including options) and agreements to purchase/ sell	960,300	0.42	1,634,300	0.71
Total	5,659,421	2.47	1,635,684	0.71

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	100	101.1100 USD
Common	Buy Transaction	20,000	101.1342 USD
Common	Buy Transaction	7,500	101.1512 USD
Common	Buy Transaction	7,500	101.2243 USD
Common	Buy Transaction	2,500	101.3388 USD
Common	Buy Transaction	67	101.3400 USD
Common	Buy Transaction	40,000	101.3412 USD
Common	Buy Transaction	5,101	101.3647 USD
Common	Buy Transaction	304	101.3663 USD
Common	Buy Transaction	2,174	101.3669 USD
Common	Buy Transaction	11,028	101.3674 USD
Common	Buy Transaction	1,742	101.3704 USD
Common	Buy Transaction	381	101.4187 USD
Common	Buy Transaction	300	101.5833 USD
Common	Buy Transaction	500	101.7100 USD
Common	DVP Transaction	31,974	101.6300 USD
Common	RVP Transaction	31,974	101.6300 USD
Common	Sell Transaction	20	101.1400 USD
Common	Sell Transaction	821	101.2493 USD
Common	Sell Transaction	1,318	101.2607 USD
Common	Sell Transaction	216	101.2952 USD
Common	Sell Transaction	31,974	101.6300 USD
Common	Sell Transaction	7,013	101.6334 USD
Common	Sell Transaction	1,520	101.6335 USD
Common	Sell Transaction	2,448	101.6335 USD

Ap29

(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	Sell Transaction	20	105.0000 USD	American	2023-May-19	0.1500 USD
Common	Call Option	Sell Transaction	4,795	105.0000 USD	American	2023-Jun-16	0.9000 USD
Common	Call Option	Sell Transaction	205	105.0000 USD	American	2023-Jun-16	0.9500 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)

Ap30

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	19 May 2023
Contact name	Paula Sharp
Telephone number	020 7645 9700

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

Ap32

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:	HORIZON THERAPEUTICS 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	Call Option	Sold	-5000	120 USD	American	18/08/2023
Common	Put Option	Sold	-15000	90 USD	American	18/08/2023
Common	Put Option	Sold	-18700	80 USD	American	18/08/2023
Common	Put Option	Sold	-42400	85 USD	American	18/08/2023
Common	Put Option	Sold	-68700	100 USD	American	18/08/2023
Common	Put Option	Sold	-210100	95 USD	American	18/08/2023
Common	Put Option	Purchased	4400	60 USD	American	18/08/2023
Common	Call Option	Purchased	11100	105 USD	American	18/08/2023
Common	Call Option	Purchased	50000	115 USD	American	18/08/2023
Common	Call Option	Sold	-12000	100 USD	American	21/07/2023
Common	Put Option	Sold	-280000	105 USD	American	21/07/2023
Common	Put Option	Purchased	100	65 USD	American	21/07/2023
Common	Put Option	Purchased	280000	90 USD	American	21/07/2023
Common	Call Option	Sold	-300000	100 USD	American	16/06/2023
Common	Call Option	Sold	-500000	105 USD	American	16/06/2023
Common	Put Option	Purchased	300000	85 USD	American	16/06/2023
Common	Call Option	Sold	-300	109 USD	American	19/05/2023
Common	Call Option	Sold	-500	111 USD	American	19/05/2023
Common	Call Option	Sold	-4500	105 USD	American	19/05/2023
Common	Call Option	Sold	-5000	115 USD	American	19/05/2023
Common	Call Option	Sold	-8900	110 USD	American	19/05/2023
Common	Put Option	Sold	-9300	95 USD	American	19/05/2023
Common	Put Option	Sold	-10000	105 USD	American	19/05/2023
Common	Call Option	Sold	-10700	95 USD	American	19/05/2023
Common	Call Option	Sold	-20900	100 USD	American	19/05/2023
Common	Put Option	Sold	-30000	85 USD	American	19/05/2023
Common	Put Option	Purchased	200	75 USD	American	19/05/2023
Common	Put Option	Purchased	1900	90 USD	American	19/05/2023
Common	Put Option	Purchased	23800	80 USD	American	19/05/2023
Common	Put Option	Purchased	187500	100 USD	American	19/05/2023
Common	Call Option	Sold	-2000	95 USD	American	26/05/2023
Common	Call Option	Sold	-2800	100 USD	American	26/05/2023
Common	Put Option	Sold	-15000	97 USD	American	26/05/2023
Common	Put Option	Purchased	1000	95 USD	American	26/05/2023
Common	Put Option	Purchased	7500	107 USD	American	26/05/2023
Common	Put Option	Purchased	29600	55 USD	American	17/11/2023
Common	Put Option	Sold	-62500	70 USD	American	19/01/2024
Common	Put Option	Purchased	700	50 USD	American	19/01/2024

3.             AGREEMENTS TO PURCHASE OR SELL

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

Ap33

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.

This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact rns@lseg.com or visit www.rns.com.

RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our Privacy Policy.

END

ITPGPURCAUPWGCB