Form 8.3 - HORIZON THERAPEUTICS PLC

FORM 8.3

IRISH TAKEOVER PANEL

DISCLOSURE UNDER RULE 8.3 OF THE IRISH TAKEOVER PANEL ACT, 1997,

TAKEOVER RULES, 2007 (AS AMENDED)

DEALINGS BY PERSONS WITH INTERESTS IN RELEVANT SECURITIES

REPRESENTING 1% OR MORE

1.

KEY INFORMATION

Name of person dealing (Note 1)

Barclays PLC.

Company dealt in

HORIZON THERAPEUTICS PLC

Class of relevant security to which the dealings being disclosed relate (Note 2)

$0.001 ordinary shares

Date of dealing

05 Oct 2023

2.

INTERESTS AND SHORT POSITIONS

(a)

Interests and short positions (following dealing) in the class of relevant security dealt in (Note 3)

Class of relevant security:

$0.001 ordinary shares

Long

Short

Number

(%)

Number

(%)

(1)

Relevant securities 

3,727,363

1.63%

60,635

0.03%

(2)

Derivatives (other than options):

49,520

0.02%

62,670

0.03%

(3)

Options and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

3,776,883

1.65%

123,305

0.05%

(b)

Interests and short positions in relevant securities of the company, other than the class dealt in

Class of relevant security:

Long

Short

Number

(%)

Number

(%)

(1)

Relevant securities

(2)

Derivatives (other than options):

(3)

Options and agreements to purchase/sell:

TOTAL:

3.

DEALINGS (Note 4)

(a)

Purchase and sales

Class of relevant Security

Purchase/sale

Number of securities

Price per unit

$0.001 ordinary shares

Purchase

100

116.2800 USD

$0.001 ordinary shares

Purchase

172

116.3250 USD

$0.001 ordinary shares

Purchase

250

116.3350 USD

$0.001 ordinary shares

Purchase

300

116.3200 USD

$0.001 ordinary shares

Purchase

547

116.2700 USD

$0.001 ordinary shares

Purchase

1,110

116.3195 USD

$0.001 ordinary shares

Purchase

1,200

116.2908 USD

$0.001 ordinary shares

Purchase

1,464

116.2734 USD

$0.001 ordinary shares

Purchase

2,136

116.3247 USD

$0.001 ordinary shares

Purchase

3,700

116.3033 USD

$0.001 ordinary shares

Purchase

4,215

116.2893 USD

$0.001 ordinary shares

Purchase

5,962

116.3050 USD

$0.001 ordinary shares

Purchase

20,818

116.3179 USD

$0.001 ordinary shares

Purchase

23,202

116.3104 USD

$0.001 ordinary shares

Purchase

23,887

116.3235 USD

$0.001 ordinary shares

Purchase

35,761

116.3023 USD

$0.001 ordinary shares

Purchase

36,470

116.2980 USD

$0.001 ordinary shares

Purchase

39,389

116.3225 USD

$0.001 ordinary shares

Purchase

58,704

116.3316 USD

$0.001 ordinary shares

Purchase

62,510

116.3300 USD

$0.001 ordinary shares

Purchase

67,937

116.3194 USD

$0.001 ordinary shares

Purchase

76,932

116.3500 USD

$0.001 ordinary shares

Purchase

112,475

116.3221 USD

$0.001 ordinary shares

Purchase

1,532,570

116.3017 USD

$0.001 ordinary shares

Purchase

17,911,156

116.3000 USD

$0.001 ordinary shares

Sale

5

116.3600 USD

$0.001 ordinary shares

Sale

100

116.3305 USD

$0.001 ordinary shares

Sale

100

116.2800 USD

$0.001 ordinary shares

Sale

100

116.3200 USD

$0.001 ordinary shares

Sale

161

116.3413 USD

$0.001 ordinary shares

Sale

400

116.3300 USD

$0.001 ordinary shares

Sale

408

116.3324 USD

$0.001 ordinary shares

Sale

443

116.3311 USD

$0.001 ordinary shares

Sale

669

116.3432 USD

$0.001 ordinary shares

Sale

1,300

116.3576 USD

$0.001 ordinary shares

Sale

1,300

116.3007 USD

$0.001 ordinary shares

Sale

1,324

116.3277 USD

$0.001 ordinary shares

Sale

1,990

116.3262 USD

$0.001 ordinary shares

Sale

6,071

116.3092 USD

$0.001 ordinary shares

Sale

6,947

116.2907 USD

$0.001 ordinary shares

Sale

15,336

116.3190 USD

$0.001 ordinary shares

Sale

20,258

116.3267 USD

$0.001 ordinary shares

Sale

20,667

116.3118 USD

$0.001 ordinary shares

Sale

21,744

116.3036 USD

$0.001 ordinary shares

Sale

42,246

116.3314 USD

$0.001 ordinary shares

Sale

57,379

116.3317 USD

$0.001 ordinary shares

Sale

75,632

116.3500 USD

$0.001 ordinary shares

Sale

1,838,582

116.3043 USD

$0.001 ordinary shares

Sale

17,537,546

116.3000 USD

(b)

Derivatives transactions (other than option transactions)

Product Name

Nature of transaction

Number of relevant securities

Price per unit

(c)

Options transactions in respect of existing securities

(i)

Writing, selling, purchasing or varying

Class of relevant security

Product description

Writing, purchasing, selling, varying etc

Number of securities to which option relates

Exercise price per unit

Type

Expiry date

Option money paid/ received per unit

(ii)

Exercising

Product name

Number of securities

Exercise price per unit

(d)

Other dealings (including transactions in respect of new securities) (Note 4)

Nature of transaction

Details

Price per unit (if applicable)

4.

OTHER INFORMATION

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

Is a Supplemental Form 8 (Open Positions) attached?

NO

Date of disclosure:

06 Oct 2023

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213

If a connected EFM, name of offeree/offeror with which connected

If a connected EFM, state nature of connection