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:

05 Aug 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:

21,765,838

3.76%

927,138

0.16%

(2)

Cash-settled derivatives:

and/or controlled:

521,517

0.09%

20,837,864

3.60%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

22,287,355

3.85%

21,765,002

3.76%

(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

61,750

1.7068 GBP

3 1/3p ordinary

Purchase

47,524

1.7063 GBP

3 1/3p ordinary

Purchase

44,151

1.6996 GBP

3 1/3p ordinary

Purchase

43,651

1.7092 GBP

3 1/3p ordinary

Purchase

41,567

1.7019 GBP

3 1/3p ordinary

Purchase

10,819

1.7020 GBP

3 1/3p ordinary

Purchase

8,731

1.7044 GBP

3 1/3p ordinary

Purchase

6,528

1.7040 GBP

3 1/3p ordinary

Purchase

5,227

1.7113 GBP

3 1/3p ordinary

Purchase

3,487

1.7024 GBP

3 1/3p ordinary

Purchase

3,402

1.7000 GBP

3 1/3p ordinary

Purchase

3,259

1.7080 GBP

3 1/3p ordinary

Purchase

1,469

1.7101 GBP

3 1/3p ordinary

Sale

180,566

1.7078 GBP

3 1/3p ordinary

Sale

35,403

1.7031 GBP

3 1/3p ordinary

Sale

34,820

1.6943 GBP

3 1/3p ordinary

Sale

20,105

1.7100 GBP

3 1/3p ordinary

Sale

14,598

1.7049 GBP

3 1/3p ordinary

Sale

11,016

1.7039 GBP

3 1/3p ordinary

Sale

3,487

1.7025 GBP

3 1/3p ordinary

Sale

3,419

1.7010 GBP

3 1/3p ordinary

Sale

2,100

1.6965 GBP

3 1/3p ordinary

Sale

210

1.7047 GBP

3 1/3p ordinary

Sale

113

1.6988 GBP

3 1/3p ordinary

Sale

110

1.6980 GBP

3 1/3p ordinary

Sale

102

1.6996 GBP

3 1/3p ordinary

Sale

61

1.7015 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

Opening Short

8,284

1.7027 GBP

3 1/3p ordinary

SWAP

Decreasing Short

24,884

1.7000 GBP

3 1/3p ordinary

SWAP

Increasing Short

2,004

1.7028 GBP

3 1/3p ordinary

CFD

Decreasing Short

9,931

1.7032 GBP

3 1/3p ordinary

CFD

Decreasing Short

210

1.7047 GBP

3 1/3p ordinary

CFD

Decreasing Short

27,287

1.7065 GBP

3 1/3p ordinary

SWAP

Increasing Short

12,133

1.7025 GBP

3 1/3p ordinary

SWAP

Decreasing Short

174

1.6996 GBP

3 1/3p ordinary

SWAP

Decreasing Short

2,727

1.7071 GBP

3 1/3p ordinary

SWAP

Increasing Short

29,230

1.7086 GBP

3 1/3p ordinary

SWAP

Increasing Short

112

1.7059 GBP

3 1/3p ordinary

SWAP

Decreasing Short

2,100

1.6965 GBP

3 1/3p ordinary

SWAP

Increasing Short

8,731

1.7044 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,469

1.7101 GBP

3 1/3p ordinary

SWAP

Decreasing Short

35,403

1.7031 GBP

3 1/3p ordinary

SWAP

Decreasing Short

69,867

1.7100 GBP

3 1/3p ordinary

SWAP

Increasing Short

5,227

1.7113 GBP

3 1/3p ordinary

SWAP

Decreasing Short

14,598

1.7049 GBP

3 1/3p ordinary

SWAP

Increasing Short

45

1.7020 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,941

1.7017 GBP

3 1/3p ordinary

SWAP

Increasing Short

2,104

1.7037 GBP

3 1/3p ordinary

SWAP

Decreasing Long

41,567

1.7019 GBP

3 1/3p ordinary

SWAP

Decreasing Long

61,750

1.7068 GBP

3 1/3p ordinary

SWAP

Decreasing Short

11,016

1.7039 GBP

3 1/3p ordinary

SWAP

Decreasing Short

49,501

1.7100 GBP

3 1/3p ordinary

SWAP

Increasing Short

6,265

1.7040 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:

06 Aug 2024

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213