Form 8.3 SPIRENT COMMUNICATIONS PLC

FORM 8.3 -published at 11:53 on 27/05/2025 changes made to section 2A and 3A

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 relevant securities this form relates:

SPIRENT COMMUNICATIONS PLC

(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:

23 May 2025

(f)

In addition to the company in 1(c) above, is the discloser making disclosures in respect of any other party to the offer?

NO

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:

45,708,415

7.87%

2,043,431

0.35%

(2) Cash-settled derivatives:

1,883,755

0.32%

44,396,763

7.64%

(3) Stock-settled derivatives (including options) and agreements to purchase/sell: 

0

0.00%

0

0.00%

TOTAL: 

47,592,170

8.19%

46,440,194

7.99%

(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 PERSON MAKING THE DISCLOSURE

(a)

Purchase and sales

Class of relevant security

Purchase/sale

Number of securities

Price per unit

3 1/3p ordinary

Purchase

1,000,000

1.9199 GBP

3 1/3p ordinary

Purchase

74,625

1.9283 GBP

3 1/3p ordinary

Purchase

69,521

1.9343 GBP

3 1/3p ordinary

Purchase

62,187

1.9281 GBP

3 1/3p ordinary

Purchase

19,498

1.9380 GBP

3 1/3p ordinary

Purchase

19,302

1.9274 GBP

3 1/3p ordinary

Purchase

17,193

1.9306 GBP

3 1/3p ordinary

Purchase

14,802

1.9247 GBP

3 1/3p ordinary

Purchase

1,682

1.9381 GBP

3 1/3p ordinary

Purchase

1,590

1.9350 GBP

3 1/3p ordinary

Purchase

1,399

1.9284 GBP

3 1/3p ordinary

Purchase

836

1.9400 GBP

3 1/3p ordinary

Purchase

657

1.9300 GBP

3 1/3p ordinary

Purchase

657

1.9320 GBP

3 1/3p ordinary

Purchase

587

1.9329 GBP

3 1/3p ordinary

Purchase

108

1.9205 GBP

3 1/3p ordinary

Purchase

6

1.9359 GBP

3 1/3p ordinary

Purchase

6

1.9360 GBP

3 1/3p ordinary

Sale

1,000,000

1.9199 GBP

3 1/3p ordinary

Sale

1,000,000

1.9188 GBP

3 1/3p ordinary

Sale

33,633

1.9243 GBP

3 1/3p ordinary

Sale

10,515

1.9380 GBP

3 1/3p ordinary

Sale

9,967

1.9322 GBP

3 1/3p ordinary

Sale

6,009

1.9379 GBP

3 1/3p ordinary

Sale

3,777

1.9337 GBP

3 1/3p ordinary

Sale

3,111

1.9225 GBP

3 1/3p ordinary

Sale

2,662

1.9385 GBP

3 1/3p ordinary

Sale

1,434

1.9355 GBP

3 1/3p ordinary

Sale

1,294

1.9382 GBP

3 1/3p ordinary

Sale

1,076

1.9240 GBP

3 1/3p ordinary

Sale

1,040

1.9347 GBP

3 1/3p ordinary

Sale

763

1.9160 GBP

3 1/3p ordinary

Sale

723

1.9400 GBP

3 1/3p ordinary

Sale

433

1.9360 GBP

(b)

Cash-settled derivative transactions

Class of relevant security

Product description

Nature of dealing

Number of reference securities

Price per unit

3 1/3p ordinary

SWAP

Decreasing Short

6,242

1.9328 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,000,000

1.9188 GBP

3 1/3p ordinary

SWAP

Decreasing Short

16,073

1.9194 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,000,000

1.9199 GBP

3 1/3p ordinary

SWAP

Decreasing Short

3,111

1.9225 GBP

3 1/3p ordinary

SWAP

Decreasing Short

2,949

1.9239 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,000,000

1.9299 GBP

3 1/3p ordinary

SWAP

Decreasing Short

2,551

1.9305 GBP

3 1/3p ordinary

SWAP

Decreasing Short

9,967

1.9322 GBP

3 1/3p ordinary

SWAP

Decreasing Short

234

1.9342 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,467

1.9351 GBP

3 1/3p ordinary

SWAP

Decreasing Short

2,760

1.9380 GBP

3 1/3p ordinary

SWAP

Decreasing Short

2,662

1.9385 GBP

3 1/3p ordinary

SWAP

Increasing Short

22

1.9203 GBP

3 1/3p ordinary

SWAP

Increasing Short

86

1.9206 GBP

3 1/3p ordinary

SWAP

Increasing Short

14,802

1.9247 GBP

3 1/3p ordinary

SWAP

Increasing Short

3,694

1.9280 GBP

3 1/3p ordinary

SWAP

Increasing Short

62,187

1.9281 GBP

3 1/3p ordinary

SWAP

Increasing Short

74,625

1.9283 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,000,000

1.9288 GBP

3 1/3p ordinary

SWAP

Increasing Short

384

1.9300 GBP

3 1/3p ordinary

SWAP

Increasing Short

604

1.9308 GBP

3 1/3p ordinary

SWAP

Increasing Short

23,537

1.9318 GBP

3 1/3p ordinary

SWAP

Increasing Short

69,521

1.9343 GBP

3 1/3p ordinary

SWAP

Increasing Short

3,841

1.9347 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,590

1.9350 GBP

3 1/3p ordinary

SWAP

Increasing Short

15

1.9360 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,018

1.9361 GBP

3 1/3p ordinary

SWAP

Increasing Short

346

1.9380 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,682

1.9381 GBP

3 1/3p ordinary

CFD

Decreasing Short

1,300

1.9258 GBP

3 1/3p ordinary

CFD

Increasing Short

3,975

1.9345 GBP

(c)

Stock-settled derivative transactions (including options)

(i)

Writing, selling, purchasing or varying

Class of relevant security

Product description

Writing, purchasing, selling, varying etc

Number of securities to which option relates

Exercise price per unit

Type

Expiry date

Option money paid/ received per unit

(ii)

Exercising

Class of relevant security

Product description

Exercising/ exercised against

Number of securities

Exercise price per unit

(d)

Other dealings (including subscribing for new securities)

Class of relevant security

Nature of Dealings

Details

Price per unit (if 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 person 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:

27th May 2025

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213