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:

24 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:

13,045,478

2.25%

5,872,620

1.01%

(2)

Cash-settled derivatives:

and/or controlled:

1,916,374

0.33%

13,011,035

2.25%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

14,961,852

2.59%

18,883,655

3.26%

(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

363,396

1.8307 GBP

3 1/3p ordinary

Purchase

280,543

1.8284 GBP

3 1/3p ordinary

Purchase

263,423

1.8324 GBP

3 1/3p ordinary

Purchase

154,552

1.8315 GBP

3 1/3p ordinary

Purchase

117,713

1.8327 GBP

3 1/3p ordinary

Purchase

107,412

1.8285 GBP

3 1/3p ordinary

Purchase

92,003

1.8295 GBP

3 1/3p ordinary

Purchase

83,872

1.8302 GBP

3 1/3p ordinary

Purchase

78,635

1.8309 GBP

3 1/3p ordinary

Purchase

75,000

1.8328 GBP

3 1/3p ordinary

Purchase

45,858

1.8269 GBP

3 1/3p ordinary

Purchase

29,952

1.8299 GBP

3 1/3p ordinary

Purchase

18,381

1.8322 GBP

3 1/3p ordinary

Purchase

17,043

1.8323 GBP

3 1/3p ordinary

Purchase

16,728

1.8292 GBP

3 1/3p ordinary

Purchase

13,808

1.8317 GBP

3 1/3p ordinary

Purchase

11,647

1.8287 GBP

3 1/3p ordinary

Purchase

9,982

1.8301 GBP

3 1/3p ordinary

Purchase

9,094

1.8270 GBP

3 1/3p ordinary

Purchase

8,152

1.8300 GBP

3 1/3p ordinary

Purchase

7,091

1.8321 GBP

3 1/3p ordinary

Purchase

6,343

1.8319 GBP

3 1/3p ordinary

Purchase

3,933

1.8310 GBP

3 1/3p ordinary

Purchase

3,500

1.8282 GBP

3 1/3p ordinary

Purchase

2,730

1.8273 GBP

3 1/3p ordinary

Purchase

2,470

1.8305 GBP

3 1/3p ordinary

Purchase

1,600

1.8331 GBP

3 1/3p ordinary

Purchase

1,341

1.8220 GBP

3 1/3p ordinary

Sale

2,000,000

1.8190 GBP

3 1/3p ordinary

Sale

500,000

1.8290 GBP

3 1/3p ordinary

Sale

236,569

1.8324 GBP

3 1/3p ordinary

Sale

161,431

1.8303 GBP

3 1/3p ordinary

Sale

117,713

1.8327 GBP

3 1/3p ordinary

Sale

116,720

1.8285 GBP

3 1/3p ordinary

Sale

76,018

1.8270 GBP

3 1/3p ordinary

Sale

46,051

1.8200 GBP

3 1/3p ordinary

Sale

12,746

1.8302 GBP

3 1/3p ordinary

Sale

8,390

1.8299 GBP

3 1/3p ordinary

Sale

7,573

1.8301 GBP

3 1/3p ordinary

Sale

5,257

1.8300 GBP

3 1/3p ordinary

Sale

3,419

1.8310 GBP

3 1/3p ordinary

Sale

2,795

1.8311 GBP

3 1/3p ordinary

Sale

2,104

1.8280 GBP

3 1/3p ordinary

Sale

1,815

1.8305 GBP

3 1/3p ordinary

Sale

1,639

1.8325 GBP

3 1/3p ordinary

Sale

172

1.8329 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

Closing Long

5,532

1.8329 GBP

3 1/3p ordinary

SWAP

Closing Long

72,360

1.8270 GBP

3 1/3p ordinary

SWAP

Closing Long

100,693

1.8261 GBP

3 1/3p ordinary

SWAP

Decreasing Long

994

1.8284 GBP

3 1/3p ordinary

SWAP

Decreasing Long

2,730

1.8273 GBP

3 1/3p ordinary

SWAP

Decreasing Long

75,000

1.8328 GBP

3 1/3p ordinary

SWAP

Decreasing Long

75,000

1.8307 GBP

3 1/3p ordinary

SWAP

Decreasing Short

172

1.8329 GBP

3 1/3p ordinary

SWAP

Decreasing Short

289

1.8305 GBP

3 1/3p ordinary

SWAP

Decreasing Short

800

1.8288 GBP

3 1/3p ordinary

SWAP

Decreasing Short

4,350

1.8300 GBP

3 1/3p ordinary

SWAP

Decreasing Short

4,830

1.8276 GBP

3 1/3p ordinary

SWAP

Decreasing Short

46,051

1.8200 GBP

3 1/3p ordinary

SWAP

Decreasing Short

500,000

1.8290 GBP

3 1/3p ordinary

SWAP

Decreasing Short

2,000,000

1.8190 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,341

1.8220 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,600

1.8331 GBP

3 1/3p ordinary

SWAP

Increasing Short

3,500

1.8282 GBP

3 1/3p ordinary

SWAP

Increasing Short

3,847

1.8320 GBP

3 1/3p ordinary

SWAP

Increasing Short

3,933

1.8310 GBP

3 1/3p ordinary

SWAP

Increasing Short

8,719

1.8237 GBP

3 1/3p ordinary

CFD

Increasing Short

9,094

1.8270 GBP

3 1/3p ordinary

CFD

Increasing Short

10,233

1.8277 GBP

3 1/3p ordinary

SWAP

Increasing Short

15,121

1.8270 GBP

3 1/3p ordinary

SWAP

Increasing Short

18,381

1.8322 GBP

3 1/3p ordinary

SWAP

Increasing Short

26,854

1.8324 GBP

3 1/3p ordinary

SWAP

Increasing Short

35,005

1.8316 GBP

3 1/3p ordinary

CFD

Increasing Short

78,608

1.8298 GBP

3 1/3p ordinary

SWAP

Increasing Short

83,872

1.8302 GBP

3 1/3p ordinary

SWAP

Increasing Short

89,206

1.8295 GBP

3 1/3p ordinary

SWAP

Increasing Short

97,024

1.8297 GBP

3 1/3p ordinary

CFD

Increasing Short

151,169

1.8303 GBP

3 1/3p ordinary

SWAP

Increasing Short

178,643

1.8315 GBP

3 1/3p ordinary

SWAP

Increasing Short

288,396

1.8307 GBP

3 1/3p ordinary

SWAP

Opening Long

47,380

1.8292 GBP

3 1/3p ordinary

SWAP

Opening Long

47,800

1.8300 GBP

3 1/3p ordinary

SWAP

Opening Long

54,800

1.8317 GBP

3 1/3p ordinary

SWAP

Opening Long

57,500

1.8295 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:

28 May 2024

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213