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 Jan 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:

44,342,055

7.66%

988,425

0.17%

(2)

Cash-settled derivatives:

and/or controlled:

681,864

0.12%

44,187,901

7.64%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

45,023,919

7.78%

45,176,326

7.81%

(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

70,325

1.7250 GBP

3 1/3p ordinary

Purchase

35,777

1.7260 GBP

3 1/3p ordinary

Purchase

21,680

1.7298 GBP

3 1/3p ordinary

Purchase

4,925

1.7281 GBP

3 1/3p ordinary

Purchase

2,740

1.7272 GBP

3 1/3p ordinary

Purchase

1,623

1.7340 GBP

3 1/3p ordinary

Purchase

1,342

1.7366 GBP

3 1/3p ordinary

Purchase

1,284

1.7390 GBP

3 1/3p ordinary

Purchase

1,094

1.7275 GBP

3 1/3p ordinary

Purchase

405

1.7238 GBP

3 1/3p ordinary

Purchase

397

1.7218 GBP

3 1/3p ordinary

Purchase

167

1.7300 GBP

3 1/3p ordinary

Sale

812,938

1.7491 GBP

3 1/3p ordinary

Sale

68,768

1.7268 GBP

3 1/3p ordinary

Sale

59,932

1.7343 GBP

3 1/3p ordinary

Sale

20,504

1.7342 GBP

3 1/3p ordinary

Sale

19,933

1.7250 GBP

3 1/3p ordinary

Sale

15,574

1.7309 GBP

3 1/3p ordinary

Sale

5,335

1.7318 GBP

3 1/3p ordinary

Sale

4,803

1.7319 GBP

3 1/3p ordinary

Sale

4,200

1.7386 GBP

3 1/3p ordinary

Sale

4,074

1.7328 GBP

3 1/3p ordinary

Sale

3,644

1.7308 GBP

3 1/3p ordinary

Sale

3,357

1.7408 GBP

3 1/3p ordinary

Sale

2,907

1.7282 GBP

3 1/3p ordinary

Sale

2,707

1.7347 GBP

3 1/3p ordinary

Sale

2,668

1.7271 GBP

3 1/3p ordinary

Sale

2,387

1.7354 GBP

3 1/3p ordinary

Sale

2,145

1.7281 GBP

3 1/3p ordinary

Sale

1,849

1.7297 GBP

3 1/3p ordinary

Sale

1,174

1.7270 GBP

3 1/3p ordinary

Sale

894

1.7267 GBP

3 1/3p ordinary

Sale

882

1.7279 GBP

3 1/3p ordinary

Sale

470

1.7289 GBP

3 1/3p ordinary

Sale

405

1.7240 GBP

3 1/3p ordinary

Sale

397

1.7220 GBP

3 1/3p ordinary

Sale

396

1.7425 GBP

3 1/3p ordinary

Sale

389

1.7230 GBP

3 1/3p ordinary

Sale

167

1.7300 GBP

3 1/3p ordinary

Sale

26

1.7260 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

21,812

1.7250 GBP

3 1/3p ordinary

SWAP

Decreasing Short

894

1.7267 GBP

3 1/3p ordinary

SWAP

Decreasing Short

738

1.7271 GBP

3 1/3p ordinary

SWAP

Decreasing Short

882

1.7279 GBP

3 1/3p ordinary

SWAP

Decreasing Short

43,591

1.7288 GBP

3 1/3p ordinary

SWAP

Decreasing Short

44,165

1.7289 GBP

3 1/3p ordinary

SWAP

Decreasing Short

3,041

1.7299 GBP

3 1/3p ordinary

SWAP

Decreasing Short

15,574

1.7309 GBP

3 1/3p ordinary

SWAP

Decreasing Short

4,648

1.7324 GBP

3 1/3p ordinary

SWAP

Decreasing Short

59,932

1.7343 GBP

3 1/3p ordinary

SWAP

Decreasing Short

2,387

1.7354 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,376

1.7367 GBP

3 1/3p ordinary

SWAP

Decreasing Short

4,200

1.7386 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,940

1.7439 GBP

3 1/3p ordinary

SWAP

Decreasing Short

812,938

1.7491 GBP

3 1/3p ordinary

SWAP

Increasing Short

95,352

1.7250 GBP

3 1/3p ordinary

SWAP

Increasing Short

5,675

1.7251 GBP

3 1/3p ordinary

SWAP

Increasing Short

2,740

1.7272 GBP

3 1/3p ordinary

SWAP

Increasing Short

328

1.7274 GBP

3 1/3p ordinary

SWAP

Increasing Short

4,925

1.7281 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,569

1.7328 GBP

3 1/3p ordinary

SWAP

Increasing Short

4,323

1.7362 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,342

1.7366 GBP

3 1/3p ordinary

SWAP

Increasing Short

4

1.7380 GBP

3 1/3p ordinary

SWAP

Increasing Short

2

1.7405 GBP

3 1/3p ordinary

CFD

Increasing Short

681

1.7306 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:

14 Jan 2025

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213