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:

10 May 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:

15,705,117

2.71%

5,895,737

1.02%

(2)

Cash-settled derivatives:

and/or controlled:

2,205,306

0.38%

15,363,392

2.66%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

17,910,423

3.10%

21,259,129

3.67%

(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

234,983

1.9079 GBP

3 1/3p ordinary

Purchase

197,459

1.9050 GBP

3 1/3p ordinary

Purchase

138,800

1.9060 GBP

3 1/3p ordinary

Purchase

76,056

1.9085 GBP

3 1/3p ordinary

Purchase

57,183

1.9057 GBP

3 1/3p ordinary

Purchase

55,911

1.9061 GBP

3 1/3p ordinary

Purchase

44,420

1.9099 GBP

3 1/3p ordinary

Purchase

43,230

1.9071 GBP

3 1/3p ordinary

Purchase

12,760

1.9011 GBP

3 1/3p ordinary

Purchase

11,564

1.9151 GBP

3 1/3p ordinary

Purchase

6,821

1.9135 GBP

3 1/3p ordinary

Purchase

5,889

1.9105 GBP

3 1/3p ordinary

Purchase

5,411

1.9158 GBP

3 1/3p ordinary

Purchase

5,247

1.9100 GBP

3 1/3p ordinary

Purchase

4,500

1.9120 GBP

3 1/3p ordinary

Purchase

3,924

1.9199 GBP

3 1/3p ordinary

Purchase

3,354

1.9139 GBP

3 1/3p ordinary

Purchase

2,288

1.9118 GBP

3 1/3p ordinary

Purchase

1,620

1.9040 GBP

3 1/3p ordinary

Purchase

1,019

1.8945 GBP

3 1/3p ordinary

Purchase

18

1.9350 GBP

3 1/3p ordinary

Purchase

1

1.9089 GBP

3 1/3p ordinary

Sale

500,000

1.9090 GBP

3 1/3p ordinary

Sale

130,034

1.9100 GBP

3 1/3p ordinary

Sale

15,989

1.9079 GBP

3 1/3p ordinary

Sale

13,556

1.9099 GBP

3 1/3p ordinary

Sale

8,285

1.9041 GBP

3 1/3p ordinary

Sale

7,379

1.9094 GBP

3 1/3p ordinary

Sale

4,500

1.9120 GBP

3 1/3p ordinary

Sale

3,941

1.9010 GBP

3 1/3p ordinary

Sale

3,284

1.9022 GBP

3 1/3p ordinary

Sale

2,596

1.9048 GBP

3 1/3p ordinary

Sale

1,823

1.9054 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

320

1.9116 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,039

1.9120 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,173

1.9119 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,400

1.9056 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,823

1.9054 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,981

1.9081 GBP

3 1/3p ordinary

SWAP

Decreasing Short

2,596

1.9048 GBP

3 1/3p ordinary

SWAP

Decreasing Short

2,730

1.9073 GBP

3 1/3p ordinary

SWAP

Decreasing Short

3,284

1.9022 GBP

3 1/3p ordinary

SWAP

Decreasing Short

3,941

1.9010 GBP

3 1/3p ordinary

SWAP

Decreasing Short

6,682

1.9072 GBP

3 1/3p ordinary

SWAP

Decreasing Short

7,379

1.9094 GBP

3 1/3p ordinary

SWAP

Decreasing Short

8,285

1.9041 GBP

3 1/3p ordinary

SWAP

Decreasing Short

13,556

1.9099 GBP

3 1/3p ordinary

SWAP

Decreasing Short

500,000

1.9090 GBP

3 1/3p ordinary

SWAP

Increasing Short

3,354

1.9139 GBP

3 1/3p ordinary

CFD

Increasing Short

4,578

1.9086 GBP

3 1/3p ordinary

SWAP

Increasing Short

7,342

1.9100 GBP

3 1/3p ordinary

SWAP

Increasing Short

7,894

1.9068 GBP

3 1/3p ordinary

SWAP

Increasing Short

12,024

1.9099 GBP

3 1/3p ordinary

SWAP

Increasing Short

57,183

1.9057 GBP

3 1/3p ordinary

CFD

Increasing Short

103,992

1.9060 GBP

3 1/3p ordinary

SWAP

Increasing Short

105,248

1.9103 GBP

3 1/3p ordinary

SWAP

Increasing Short

138,800

1.9060 GBP

3 1/3p ordinary

CFD

Increasing Short

144,934

1.9081 GBP

3 1/3p ordinary

SWAP

Increasing Short

197,459

1.9050 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:

13 May 2024

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213