Barclays Regulatory News (BARC)

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:

03 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:

13,550,356

2.34%

335,454

0.06%

(2)

Cash-settled derivatives:

and/or controlled:

288,216

0.05%

13,370,804

2.31%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

13,838,572

2.39%

13,706,258

2.37%

(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

186,242

1.9729 GBP

3 1/3p ordinary

Purchase

160,366

1.9800 GBP

3 1/3p ordinary

Purchase

116,322

1.9763 GBP

3 1/3p ordinary

Purchase

115,150

1.9734 GBP

3 1/3p ordinary

Purchase

80,070

1.9730 GBP

3 1/3p ordinary

Purchase

36,761

1.9712 GBP

3 1/3p ordinary

Purchase

23,921

1.9694 GBP

3 1/3p ordinary

Purchase

14,273

1.9731 GBP

3 1/3p ordinary

Purchase

11,454

1.9765 GBP

3 1/3p ordinary

Purchase

9,170

1.9780 GBP

3 1/3p ordinary

Purchase

8,954

1.9733 GBP

3 1/3p ordinary

Purchase

8,237

1.9642 GBP

3 1/3p ordinary

Purchase

7,228

1.9670 GBP

3 1/3p ordinary

Purchase

6,023

1.9710 GBP

3 1/3p ordinary

Purchase

5,391

1.9732 GBP

3 1/3p ordinary

Purchase

5,136

1.9757 GBP

3 1/3p ordinary

Purchase

3,941

1.9760 GBP

3 1/3p ordinary

Purchase

2,820

1.9850 GBP

3 1/3p ordinary

Purchase

2,577

1.9790 GBP

3 1/3p ordinary

Purchase

2,279

1.9700 GBP

3 1/3p ordinary

Purchase

1,984

1.9750 GBP

3 1/3p ordinary

Purchase

1,933

1.9610 GBP

3 1/3p ordinary

Purchase

1,857

1.9630 GBP

3 1/3p ordinary

Purchase

1,303

1.9600 GBP

3 1/3p ordinary

Purchase

991

1.9770 GBP

3 1/3p ordinary

Purchase

303

1.9794 GBP

3 1/3p ordinary

Purchase

291

1.9791 GBP

3 1/3p ordinary

Purchase

261

1.9620 GBP

3 1/3p ordinary

Sale

183,306

1.9845 GBP

3 1/3p ordinary

Sale

171,490

1.9800 GBP

3 1/3p ordinary

Sale

113,078

1.9746 GBP

3 1/3p ordinary

Sale

93,663

1.9715 GBP

3 1/3p ordinary

Sale

19,654

1.9752 GBP

3 1/3p ordinary

Sale

14,053

1.9710 GBP

3 1/3p ordinary

Sale

8,754

1.9739 GBP

3 1/3p ordinary

Sale

8,600

1.9727 GBP

3 1/3p ordinary

Sale

7,428

1.9780 GBP

3 1/3p ordinary

Sale

6,104

1.9626 GBP

3 1/3p ordinary

Sale

5,114

1.9670 GBP

3 1/3p ordinary

Sale

4,953

1.9718 GBP

3 1/3p ordinary

Sale

3,514

1.9760 GBP

3 1/3p ordinary

Sale

3,382

1.9735 GBP

3 1/3p ordinary

Sale

3,362

1.9717 GBP

3 1/3p ordinary

Sale

3,291

1.9650 GBP

3 1/3p ordinary

Sale

2,820

1.9850 GBP

3 1/3p ordinary

Sale

2,577

1.9790 GBP

3 1/3p ordinary

Sale

2,279

1.9700 GBP

3 1/3p ordinary

Sale

2,079

1.9665 GBP

3 1/3p ordinary

Sale

2,032

1.9720 GBP

3 1/3p ordinary

Sale

1,984

1.9750 GBP

3 1/3p ordinary

Sale

1,933

1.9610 GBP

3 1/3p ordinary

Sale

1,857

1.9630 GBP

3 1/3p ordinary

Sale

1,842

1.9635 GBP

3 1/3p ordinary

Sale

1,732

1.9777 GBP

3 1/3p ordinary

Sale

1,303

1.9600 GBP

3 1/3p ordinary

Sale

991

1.9770 GBP

3 1/3p ordinary

Sale

713

1.9660 GBP

3 1/3p ordinary

Sale

546

1.9680 GBP

3 1/3p ordinary

Sale

409

1.9560 GBP

3 1/3p ordinary

Sale

378

1.9614 GBP

3 1/3p ordinary

Sale

348

1.9705 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

546

1.9680 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,188

1.9714 GBP

3 1/3p ordinary

SWAP

Decreasing Short

2,178

1.9741 GBP

3 1/3p ordinary

SWAP

Decreasing Short

3,382

1.9735 GBP

3 1/3p ordinary

SWAP

Decreasing Short

4,155

1.9707 GBP

3 1/3p ordinary

SWAP

Decreasing Short

4,380

1.9712 GBP

3 1/3p ordinary

CFD

Decreasing Short

8,030

1.9710 GBP

3 1/3p ordinary

SWAP

Decreasing Short

8,600

1.9727 GBP

3 1/3p ordinary

CFD

Decreasing Short

11,476

1.9680 GBP

3 1/3p ordinary

SWAP

Decreasing Short

19,312

1.9695 GBP

3 1/3p ordinary

CFD

Decreasing Short

34,568

1.9737 GBP

3 1/3p ordinary

SWAP

Decreasing Short

42,563

1.9800 GBP

3 1/3p ordinary

SWAP

Decreasing Short

93,663

1.9715 GBP

3 1/3p ordinary

SWAP

Decreasing Short

108,263

1.9898 GBP

3 1/3p ordinary

SWAP

Decreasing Short

121,137

1.9746 GBP

3 1/3p ordinary

SWAP

Increasing Short

261

1.9620 GBP

3 1/3p ordinary

SWAP

Increasing Short

427

1.9760 GBP

3 1/3p ordinary

SWAP

Increasing Short

5,136

1.9757 GBP

3 1/3p ordinary

SWAP

Increasing Short

5,391

1.9732 GBP

3 1/3p ordinary

CFD

Increasing Short

8,092

1.9800 GBP

3 1/3p ordinary

SWAP

Increasing Short

80,070

1.9730 GBP

3 1/3p ordinary

SWAP

Increasing Short

88,088

1.9734 GBP

3 1/3p ordinary

SWAP

Increasing Short

160,952

1.9724 GBP

3 1/3p ordinary

SWAP

Increasing Short

167,361

1.9725 GBP

3 1/3p ordinary

SWAP

Opening Short

1,292

1.9694 GBP

3 1/3p ordinary

SWAP

Opening Short

62,927

1.9763 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:

04 Apr 2024

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213