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:

16 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:

15,442,511

2.67%

368,476

0.06%

(2)

Cash-settled derivatives:

and/or controlled:

288,207

0.05%

15,202,730

2.63%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

15,730,718

2.72%

15,571,206

2.69%

(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

174,979

1.9341 GBP

3 1/3p ordinary

Purchase

150,659

1.9609 GBP

3 1/3p ordinary

Purchase

150,658

1.9539 GBP

3 1/3p ordinary

Purchase

132,719

1.9343 GBP

3 1/3p ordinary

Purchase

107,507

1.9220 GBP

3 1/3p ordinary

Purchase

50,102

1.9373 GBP

3 1/3p ordinary

Purchase

42,206

1.9366 GBP

3 1/3p ordinary

Purchase

35,221

1.9446 GBP

3 1/3p ordinary

Purchase

31,498

1.9389 GBP

3 1/3p ordinary

Purchase

31,224

1.9371 GBP

3 1/3p ordinary

Purchase

25,221

1.9400 GBP

3 1/3p ordinary

Purchase

17,208

1.9398 GBP

3 1/3p ordinary

Purchase

13,568

1.9335 GBP

3 1/3p ordinary

Purchase

8,515

1.9386 GBP

3 1/3p ordinary

Purchase

8,243

1.9360 GBP

3 1/3p ordinary

Purchase

5,604

1.9425 GBP

3 1/3p ordinary

Purchase

5,427

1.9383 GBP

3 1/3p ordinary

Purchase

4,532

1.9380 GBP

3 1/3p ordinary

Purchase

4,310

1.9540 GBP

3 1/3p ordinary

Purchase

3,156

1.9526 GBP

3 1/3p ordinary

Purchase

1,580

1.9462 GBP

3 1/3p ordinary

Purchase

1,508

1.9560 GBP

3 1/3p ordinary

Purchase

1,500

1.9385 GBP

3 1/3p ordinary

Sale

43,725

1.9218 GBP

3 1/3p ordinary

Sale

31,249

1.9306 GBP

3 1/3p ordinary

Sale

22,813

1.9445 GBP

3 1/3p ordinary

Sale

19,491

1.9478 GBP

3 1/3p ordinary

Sale

11,359

1.9220 GBP

3 1/3p ordinary

Sale

10,262

1.9462 GBP

3 1/3p ordinary

Sale

9,578

1.9592 GBP

3 1/3p ordinary

Sale

5,408

1.9360 GBP

3 1/3p ordinary

Sale

4,448

1.9349 GBP

3 1/3p ordinary

Sale

4,443

1.9540 GBP

3 1/3p ordinary

Sale

4,323

1.9380 GBP

3 1/3p ordinary

Sale

3,944

1.9374 GBP

3 1/3p ordinary

Sale

1,400

1.9348 GBP

3 1/3p ordinary

Sale

1,104

1.9400 GBP

3 1/3p ordinary

Sale

1,015

1.9396 GBP

3 1/3p ordinary

Sale

219

1.9600 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

CFD

Decreasing Short

2

1.9200 GBP

3 1/3p ordinary

SWAP

Decreasing Short

133

1.9540 GBP

3 1/3p ordinary

SWAP

Decreasing Short

580

1.9427 GBP

3 1/3p ordinary

SWAP

Decreasing Short

790

1.9360 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,015

1.9396 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,400

1.9348 GBP

3 1/3p ordinary

SWAP

Decreasing Short

2,818

1.9477 GBP

3 1/3p ordinary

SWAP

Decreasing Short

3,312

1.9530 GBP

3 1/3p ordinary

CFD

Decreasing Short

3,911

1.9219 GBP

3 1/3p ordinary

SWAP

Decreasing Short

3,958

1.9465 GBP

3 1/3p ordinary

SWAP

Decreasing Short

8,823

1.9467 GBP

3 1/3p ordinary

SWAP

Decreasing Short

9,578

1.9592 GBP

3 1/3p ordinary

SWAP

Decreasing Short

10,195

1.9324 GBP

3 1/3p ordinary

SWAP

Decreasing Short

10,262

1.9462 GBP

3 1/3p ordinary

SWAP

Decreasing Short

22,813

1.9445 GBP

3 1/3p ordinary

SWAP

Decreasing Short

31,101

1.9318 GBP

3 1/3p ordinary

SWAP

Decreasing Short

43,725

1.9218 GBP

3 1/3p ordinary

SWAP

Increasing Short

209

1.9380 GBP

3 1/3p ordinary

SWAP

Increasing Short

607

1.9389 GBP

3 1/3p ordinary

CFD

Increasing Short

897

1.9219 GBP

3 1/3p ordinary

SWAP

Increasing Short

3,156

1.9526 GBP

3 1/3p ordinary

SWAP

Increasing Short

3,780

1.9360 GBP

3 1/3p ordinary

SWAP

Increasing Short

9,919

1.9609 GBP

3 1/3p ordinary

SWAP

Increasing Short

9,919

1.9539 GBP

3 1/3p ordinary

SWAP

Increasing Short

11,522

1.9341 GBP

3 1/3p ordinary

SWAP

Increasing Short

19,478

1.9501 GBP

3 1/3p ordinary

SWAP

Increasing Short

24,117

1.9400 GBP

3 1/3p ordinary

SWAP

Increasing Short

25,723

1.9394 GBP

3 1/3p ordinary

SWAP

Increasing Short

35,221

1.9446 GBP

3 1/3p ordinary

SWAP

Increasing Short

50,000

1.9278 GBP

3 1/3p ordinary

SWAP

Increasing Short

50,000

1.9401 GBP

3 1/3p ordinary

SWAP

Increasing Short

106,610

1.9220 GBP

3 1/3p ordinary

SWAP

Increasing Short

140,739

1.9539 GBP

3 1/3p ordinary

SWAP

Increasing Short

140,740

1.9609 GBP

3 1/3p ordinary

SWAP

Increasing Short

163,457

1.9341 GBP

3 1/3p ordinary

SWAP

Increasing Short

189,440

1.9364 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:

17 Apr 2024

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213