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:

04 Feb 2025

(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:

44,717,216

7.73%

788,191

0.14%

(2)

Cash-settled derivatives:

and/or controlled:

464,606

0.08%

44,286,547

7.65%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

45,181,822

7.81%

45,074,738

7.79%

(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

809,263

1.8497 GBP

3 1/3p ordinary

Purchase

90,973

1.8492 GBP

3 1/3p ordinary

Purchase

68,006

1.8487 GBP

3 1/3p ordinary

Purchase

25,021

1.8500 GBP

3 1/3p ordinary

Purchase

22,464

1.8434 GBP

3 1/3p ordinary

Purchase

20,421

1.8481 GBP

3 1/3p ordinary

Purchase

11,047

1.8495 GBP

3 1/3p ordinary

Purchase

9,080

1.8465 GBP

3 1/3p ordinary

Purchase

8,686

1.8479 GBP

3 1/3p ordinary

Purchase

8,282

1.8430 GBP

3 1/3p ordinary

Purchase

5,810

1.8444 GBP

3 1/3p ordinary

Purchase

5,031

1.8490 GBP

3 1/3p ordinary

Purchase

3,969

1.8451 GBP

3 1/3p ordinary

Purchase

3,263

1.8456 GBP

3 1/3p ordinary

Purchase

2,954

1.8457 GBP

3 1/3p ordinary

Purchase

1,554

1.8466 GBP

3 1/3p ordinary

Purchase

1,018

1.8420 GBP

3 1/3p ordinary

Purchase

696

1.8534 GBP

3 1/3p ordinary

Purchase

557

1.8454 GBP

3 1/3p ordinary

Purchase

476

1.8440 GBP

3 1/3p ordinary

Purchase

167

1.8473 GBP

3 1/3p ordinary

Purchase

78

1.8506 GBP

3 1/3p ordinary

Sale

507,867

1.8504 GBP

3 1/3p ordinary

Sale

191,784

1.8500 GBP

3 1/3p ordinary

Sale

99,807

1.8496 GBP

3 1/3p ordinary

Sale

48,112

1.8469 GBP

3 1/3p ordinary

Sale

41,167

1.8448 GBP

3 1/3p ordinary

Sale

16,545

1.8430 GBP

3 1/3p ordinary

Sale

15,760

1.8491 GBP

3 1/3p ordinary

Sale

11,974

1.8450 GBP

3 1/3p ordinary

Sale

8,035

1.8488 GBP

3 1/3p ordinary

Sale

6,984

1.8487 GBP

3 1/3p ordinary

Sale

6,754

1.8438 GBP

3 1/3p ordinary

Sale

6,076

1.8468 GBP

3 1/3p ordinary

Sale

5,890

1.8472 GBP

3 1/3p ordinary

Sale

5,626

1.8486 GBP

3 1/3p ordinary

Sale

5,105

1.8479 GBP

3 1/3p ordinary

Sale

3,919

1.8440 GBP

3 1/3p ordinary

Sale

3,345

1.8501 GBP

3 1/3p ordinary

Sale

1,635

1.8473 GBP

3 1/3p ordinary

Sale

1,187

1.8480 GBP

3 1/3p ordinary

Sale

1,018

1.8420 GBP

3 1/3p ordinary

Sale

971

1.8439 GBP

3 1/3p ordinary

Sale

590

1.8490 GBP

3 1/3p ordinary

Sale

471

1.8433 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

1,013

1.8431 GBP

3 1/3p ordinary

SWAP

Decreasing Short

6,754

1.8438 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,635

1.8473 GBP

3 1/3p ordinary

SWAP

Decreasing Short

92,794

1.8486 GBP

3 1/3p ordinary

SWAP

Decreasing Short

85,530

1.8487 GBP

3 1/3p ordinary

SWAP

Decreasing Short

8,035

1.8488 GBP

3 1/3p ordinary

SWAP

Decreasing Short

15,760

1.8491 GBP

3 1/3p ordinary

SWAP

Decreasing Short

8,118

1.8500 GBP

3 1/3p ordinary

SWAP

Increasing Short

2

1.8440 GBP

3 1/3p ordinary

SWAP

Increasing Short

847

1.8444 GBP

3 1/3p ordinary

SWAP

Increasing Short

3,740

1.8447 GBP

3 1/3p ordinary

SWAP

Increasing Short

3,605

1.8448 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,204

1.8451 GBP

3 1/3p ordinary

SWAP

Increasing Short

557

1.8454 GBP

3 1/3p ordinary

SWAP

Increasing Short

373

1.8459 GBP

3 1/3p ordinary

SWAP

Increasing Short

1

1.8460 GBP

3 1/3p ordinary

SWAP

Increasing Short

167

1.8473 GBP

3 1/3p ordinary

SWAP

Increasing Short

5,135

1.8474 GBP

3 1/3p ordinary

SWAP

Increasing Short

5,636

1.8475 GBP

3 1/3p ordinary

SWAP

Increasing Short

20,421

1.8481 GBP

3 1/3p ordinary

SWAP

Increasing Short

68,006

1.8487 GBP

3 1/3p ordinary

SWAP

Increasing Short

4,441

1.8490 GBP

3 1/3p ordinary

SWAP

Increasing Short

90,973

1.8492 GBP

3 1/3p ordinary

SWAP

Increasing Short

11,047

1.8495 GBP

3 1/3p ordinary

SWAP

Increasing Short

11,642

1.8497 GBP

3 1/3p ordinary

SWAP

Increasing Short

66,446

1.8500 GBP

3 1/3p ordinary

SWAP

Increasing Short

12,537

1.8501 GBP

3 1/3p ordinary

SWAP

Increasing Short

6,326

1.8503 GBP

3 1/3p ordinary

SWAP

Increasing Short

78

1.8506 GBP

3 1/3p ordinary

CFD

Decreasing Short

2,784

1.8429 GBP

3 1/3p ordinary

CFD

Increasing Short

9,117

1.8471 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:

05 Feb 2025

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213