Form 8.3 STHREE PLC

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:

Barclays PLC.

(b)

Owner or controller of interest and short

positions disclosed, if different from 1(a):

(c)

Name of offeror/offeree in relation to whose

STHREE PLC

relevant securities this form relates:

(d)

If an exempt fund manager connected with an

offeror/offeree, state this and specify identity of

offeror/offeree:

(e)

Date position held/dealing undertaken:

12 Oct 2026

(f)

In addition to the company in 1(c) above, is the discloser making

NO

disclosures in respect of any other party to the offer?

2.

POSITIONS OF THE PERSON MAKING THE DISCLOSURE

(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:

1p Ordinary

Interests

Short Positions

Number

(%)

Number

(%)

(1)

Relevant securities owned

and/or controlled:

3,792,528

3.12%

418,906

0.34%

(2)

Cash-settled derivatives:

413,103

0.34%

3,798,826

3.12%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

4,205,631

3.46%

4,217,732

3.47%

(b)

Rights to subscribe for new securities (including directors and other executive

options)

Class of relevant security in relation to

which subscription right exists

Details, including nature of the rights

concerned and relevant percentages:

3.

DEALINGS (IF ANY) BY THE PERSON MAKING THE DISCLOSURE

(a)

Purchases and sales

Class of relevant

Purchase/sale

Number of

Price per unit

security

securities

1p Ordinary

Purchase

12,884

3.0400 GBP

1p Ordinary

Purchase

8,682

3.0305 GBP

1p Ordinary

Purchase

4,042

3.0316 GBP

1p Ordinary

Purchase

2,396

3.0109 GBP

1p Ordinary

Purchase

2,271

3.0102 GBP

1p Ordinary

Purchase

2,244

3.0397 GBP

1p Ordinary

Purchase

2,097

3.0200 GBP

1p Ordinary

Purchase

1,582

3.0295 GBP

1p Ordinary

Purchase

1,426

3.0401 GBP

1p Ordinary

Purchase

1,102

3.0307 GBP

1p Ordinary

Purchase

1,034

3.0765 GBP

1p Ordinary

Purchase

857

3.0925 GBP

1p Ordinary

Purchase

824

3.0350 GBP

1p Ordinary

Purchase

824

3.0427 GBP

1p Ordinary

Purchase

692

3.0315 GBP

1p Ordinary

Purchase

523

3.0191 GBP

1p Ordinary

Purchase

395

3.0100 GBP

1p Ordinary

Purchase

227

3.0281 GBP

1p Ordinary

Purchase

39

3.0393 GBP

1p Ordinary

Purchase

26

3.0450 GBP

1p Ordinary

Purchase

6

3.0975 GBP

1p Ordinary

Sale

170,929

3.0400 GBP

1p Ordinary

Sale

9,556

3.0122 GBP

1p Ordinary

Sale

6,574

3.0200 GBP

1p Ordinary

Sale

4,688

3.0378 GBP

1p Ordinary

Sale

2,916

3.0394 GBP

1p Ordinary

Sale

2,111

3.0251 GBP

1p Ordinary

Sale

1,717

3.0912 GBP

1p Ordinary

Sale

1,241

3.0218 GBP

1p Ordinary

Sale

1,108

3.0291 GBP

1p Ordinary

Sale

668

3.0351 GBP

1p Ordinary

Sale

384

3.0285 GBP

1p Ordinary

Sale

337

3.0376 GBP

1p Ordinary

Sale

156

3.0315 GBP

1p Ordinary

Sale

126

3.0338 GBP

1p Ordinary

Sale

93

3.0555 GBP

(b)

Cash-settled derivative transactions

Class of

Product

Nature of dealing

Number of

Price per

relevant

description

reference

unit

security

securities

1p Ordinary

SWAP

Increasing Long

9,173

3.0125 GBP

1p Ordinary

SWAP

Decreasing Short

266

3.0332 GBP

1p Ordinary

SWAP

Decreasing Short

131

3.0097 GBP

1p Ordinary

SWAP

Decreasing Short

1,843

3.0307 GBP

1p Ordinary

SWAP

Decreasing Short

668

3.0351 GBP

1p Ordinary

SWAP

Opening Long

166,470

3.0400 GBP

1p Ordinary

SWAP

Increasing Long

2,554

3.0398 GBP

1p Ordinary

SWAP

Decreasing Short

1,241

3.0218 GBP

1p Ordinary

CFD

Increasing Short

1,923

3.0278 GBP

1p Ordinary

CFD

Increasing Short

3,411

3.0331 GBP

1p Ordinary

SWAP

Decreasing Long

1,426

3.0401 GBP

1p Ordinary

SWAP

Decreasing Long

2,867

3.0400 GBP

1p Ordinary

SWAP

Increasing Short

485

3.0350 GBP

1p Ordinary

SWAP

Decreasing Long

631

3.0245 GBP

1p Ordinary

SWAP

Decreasing Short

316

3.0400 GBP

1p Ordinary

SWAP

Decreasing Long

8,682

3.0305 GBP

1p Ordinary

SWAP

Increasing Long

383

3.0049 GBP

1p Ordinary

SWAP

Increasing Short

395

3.0100 GBP

1p Ordinary

SWAP

Increasing Long

1,152

3.0393 GBP

1p Ordinary

SWAP

Increasing Short

1,635

3.0200 GBP

1p Ordinary

SWAP

Decreasing Long

369

3.0400 GBP

1p Ordinary

SWAP

Increasing Short

2,396

3.0109 GBP

1p Ordinary

SWAP

Increasing Short

2,271

3.0102 GBP

1p Ordinary

SWAP

Decreasing Long

455

3.0450 GBP

(c)

Stock-settled derivative transactions (including options)

(i)

Writing, selling, purchasing or varying

Class

Product

Writing,

Number

Exercise

Type

Expiry

Option

of

description

purchasing,

of

price

date

money

relevant

selling,

securities

per unit

paid/

security

varying etc

to which

received

option

per unit

relates

(ii)

Exercise

Class of relevant

Product description

Exercising/ exercised against

Number of

Exercise price per

security

securities

unit

(d)

Other dealings (including subscribing for new securities)

Class of relevant

Nature of Dealings

Details

Price per unit (if

security

applicable)

4.

OTHER INFORMATION

(a)

Indemnity and other dealings 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 exempt principal trader making the disclosure and any party

to the offer or any person acting in concert with a party to the offer:

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 of future acquisition or disposal of any relevant securities to which

any derivative is referenced:

NONE

(c)

Attachments

Is a Supplemental Form 8 (Open Positions) attached?

NO

Date of disclosure:

13 Oct 2026

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213