Form 8.3 - SPIRENT COMMUNICATIONS 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

SPIRENT COMMUNICATIONS 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:

13 Dec 2024

(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:

3 1/3p ordinary

Interests

Short Positions

Number

(%)

Number

(%)

(1)

Relevant securities owned

and/or controlled:

44,203,843

7.64%

1,480,805

0.26%

(2)

Cash-settled derivatives:

and/or controlled:

1,150,839

0.20%

43,363,572

7.49%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

45,354,682

7.84%

44,844,377

7.75%

(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 EXEMPT PRINCIPAL TRADER

(a)

Purchases and sales

Class of relevant

Purchase/sale

Number of

Price per unit

security

securities

3 1/3p ordinary

Purchase

200,000

1.7888 GBP

3 1/3p ordinary

Purchase

156,074

1.7894 GBP

3 1/3p ordinary

Purchase

39,128

1.7900 GBP

3 1/3p ordinary

Purchase

8,147

1.7785 GBP

3 1/3p ordinary

Purchase

5,376

1.8002 GBP

3 1/3p ordinary

Purchase

4,632

1.7830 GBP

3 1/3p ordinary

Purchase

4,583

1.7775 GBP

3 1/3p ordinary

Purchase

3,300

1.7998 GBP

3 1/3p ordinary

Purchase

2,993

1.7822 GBP

3 1/3p ordinary

Purchase

2,821

1.7688 GBP

3 1/3p ordinary

Purchase

1,519

1.8030 GBP

3 1/3p ordinary

Purchase

508

1.7910 GBP

3 1/3p ordinary

Purchase

507

1.7842 GBP

3 1/3p ordinary

Purchase

359

1.7760 GBP

3 1/3p ordinary

Purchase

99

1.7920 GBP

3 1/3p ordinary

Sale

176,707

1.7899 GBP

3 1/3p ordinary

Sale

66,297

1.7760 GBP

3 1/3p ordinary

Sale

26,320

1.7869 GBP

3 1/3p ordinary

Sale

17,079

1.7849 GBP

3 1/3p ordinary

Sale

14,351

1.7880 GBP

3 1/3p ordinary

Sale

11,132

1.7895 GBP

3 1/3p ordinary

Sale

10,355

1.7864 GBP

3 1/3p ordinary

Sale

8,257

1.7932 GBP

3 1/3p ordinary

Sale

5,949

1.7833 GBP

3 1/3p ordinary

Sale

4,898

1.7900 GBP

3 1/3p ordinary

Sale

2,858

1.7807 GBP

3 1/3p ordinary

Sale

2,106

1.7818 GBP

3 1/3p ordinary

Sale

1,877

1.7911 GBP

3 1/3p ordinary

Sale

1,645

1.7860 GBP

3 1/3p ordinary

Sale

1,519

1.8030 GBP

3 1/3p ordinary

Sale

1,488

1.7856 GBP

3 1/3p ordinary

Sale

776

1.7885 GBP

3 1/3p ordinary

Sale

643

1.7884 GBP

3 1/3p ordinary

Sale

558

1.7805 GBP

3 1/3p ordinary

Sale

512

1.7868 GBP

3 1/3p ordinary

Sale

431

1.7930 GBP

3 1/3p ordinary

Sale

377

1.7850 GBP

3 1/3p ordinary

Sale

350

1.7898 GBP

3 1/3p ordinary

Sale

315

1.7785 GBP

3 1/3p ordinary

Sale

99

1.7921 GBP

(b)

Cash-settled derivative transactions

Class of

Product

Nature of dealing

Number of

Price per

relevant

description

reference

unit

security

securities

3 1/3p ordinary

SWAP

Decreasing Short

3,289

1.7820 GBP

3 1/3p ordinary

SWAP

Decreasing Short

64,159

1.7760 GBP

3 1/3p ordinary

SWAP

Decreasing Short

315

1.7785 GBP

3 1/3p ordinary

SWAP

Decreasing Short

4,305

1.7842 GBP

3 1/3p ordinary

SWAP

Decreasing Short

17,079

1.7849 GBP

3 1/3p ordinary

SWAP

Decreasing Short

10,355

1.7864 GBP

3 1/3p ordinary

SWAP

Decreasing Short

26,320

1.7869 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,562

1.7880 GBP

3 1/3p ordinary

SWAP

Decreasing Short

334

1.7893 GBP

3 1/3p ordinary

SWAP

Decreasing Short

57,400

1.7899 GBP

3 1/3p ordinary

SWAP

Increasing Short

2,821

1.7688 GBP

3 1/3p ordinary

SWAP

Increasing Short

4,773

1.7760 GBP

3 1/3p ordinary

SWAP

Increasing Short

2,993

1.7822 GBP

3 1/3p ordinary

SWAP

Increasing Short

256

1.7826 GBP

3 1/3p ordinary

SWAP

Increasing Short

4,632

1.7830 GBP

3 1/3p ordinary

SWAP

Increasing Short

507

1.7841 GBP

3 1/3p ordinary

SWAP

Increasing Short

200,000

1.7888 GBP

3 1/3p ordinary

SWAP

Increasing Short

39,128

1.7900 GBP

3 1/3p ordinary

SWAP

Increasing Short

439

1.7910 GBP

3 1/3p ordinary

SWAP

Increasing Short

3,300

1.7998 GBP

3 1/3p ordinary

SWAP

Increasing Short

2

1.8010 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,519

1.8030 GBP

3 1/3p ordinary

SWAP

Increasing Short

143

1.8041 GBP

3 1/3p ordinary

CFD

Decreasing Short

537

1.7858 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)

Exercising

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:

16 Dec 2024

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213