Spirent Regulatory News (SPT)

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:

18 Apr 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:

15,820,859

2.73%

5,401,323

0.93%

(2)

Cash-settled derivatives:

and/or controlled:

288,207

0.05%

15,580,875

2.69%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

16,109,066

2.78%

20,982,198

3.63%

(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

90,398

1.9394 GBP

3 1/3p ordinary

Purchase

35,579

1.9390 GBP

3 1/3p ordinary

Purchase

35,232

1.9393 GBP

3 1/3p ordinary

Purchase

19,898

1.9400 GBP

3 1/3p ordinary

Purchase

14,749

1.9396 GBP

3 1/3p ordinary

Purchase

10,445

1.9388 GBP

3 1/3p ordinary

Purchase

5,059

1.9387 GBP

3 1/3p ordinary

Purchase

3,631

1.9303 GBP

3 1/3p ordinary

Purchase

2,861

1.9370 GBP

3 1/3p ordinary

Purchase

2,195

1.9380 GBP

3 1/3p ordinary

Purchase

1,864

1.9420 GBP

3 1/3p ordinary

Purchase

1,638

1.9290 GBP

3 1/3p ordinary

Purchase

1,496

1.9350 GBP

3 1/3p ordinary

Purchase

554

1.9395 GBP

3 1/3p ordinary

Sale

5,000,000

1.9540 GBP

3 1/3p ordinary

Sale

54,232

1.9400 GBP

3 1/3p ordinary

Sale

36,081

1.9395 GBP

3 1/3p ordinary

Sale

29,667

1.9380 GBP

3 1/3p ordinary

Sale

19,654

1.9389 GBP

3 1/3p ordinary

Sale

14,965

1.9346 GBP

3 1/3p ordinary

Sale

11,010

1.9384 GBP

3 1/3p ordinary

Sale

7,818

1.9363 GBP

3 1/3p ordinary

Sale

7,557

1.9381 GBP

3 1/3p ordinary

Sale

4,938

1.9383 GBP

3 1/3p ordinary

Sale

3,306

1.9367 GBP

3 1/3p ordinary

Sale

2,062

1.9390 GBP

3 1/3p ordinary

Sale

1,864

1.9420 GBP

3 1/3p ordinary

Sale

1,503

1.9358 GBP

3 1/3p ordinary

Sale

806

1.9360 GBP

3 1/3p ordinary

Sale

-47,775

1.9388 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

308

1.9384 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,266

1.9377 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,503

1.9358 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,754

1.9400 GBP

3 1/3p ordinary

SWAP

Decreasing Short

2,225

1.9388 GBP

3 1/3p ordinary

SWAP

Decreasing Short

3,635

1.9379 GBP

3 1/3p ordinary

SWAP

Decreasing Short

5,306

1.9393 GBP

3 1/3p ordinary

SWAP

Decreasing Short

6,404

1.9375 GBP

3 1/3p ordinary

SWAP

Decreasing Short

7,503

1.9360 GBP

3 1/3p ordinary

SWAP

Decreasing Short

7,818

1.9363 GBP

3 1/3p ordinary

CFD

Decreasing Short

8,780

1.9380 GBP

3 1/3p ordinary

SWAP

Decreasing Short

11,010

1.9384 GBP

3 1/3p ordinary

SWAP

Decreasing Short

14,965

1.9346 GBP

3 1/3p ordinary

CFD

Decreasing Short

16,045

1.9386 GBP

3 1/3p ordinary

SWAP

Increasing Short

554

1.9395 GBP

3 1/3p ordinary

SWAP

Increasing Short

2,861

1.9370 GBP

3 1/3p ordinary

CFD

Increasing Short

4,546

1.9291 GBP

3 1/3p ordinary

SWAP

Increasing Short

9,423

1.9400 GBP

3 1/3p ordinary

SWAP

Increasing Short

111,811

1.9391 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:

19 Apr 2024

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213