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:

21 Jan 2025

(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:

44,804,748

7.74%

899,472

0.16%

(2)

Cash-settled derivatives:

and/or controlled:

583,858

0.10%

44,611,978

7.71%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

45,388,606

7.84%

45,511,450

7.87%

(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

90,571

1.7747 GBP

3 1/3p ordinary

Purchase

78,073

1.7757 GBP

3 1/3p ordinary

Purchase

38,337

1.7716 GBP

3 1/3p ordinary

Purchase

20,487

1.7804 GBP

3 1/3p ordinary

Purchase

15,808

1.7745 GBP

3 1/3p ordinary

Purchase

9,521

1.7722 GBP

3 1/3p ordinary

Purchase

9,458

1.7720 GBP

3 1/3p ordinary

Purchase

7,870

1.7705 GBP

3 1/3p ordinary

Purchase

7,792

1.7787 GBP

3 1/3p ordinary

Purchase

6,560

1.7742 GBP

3 1/3p ordinary

Purchase

6,226

1.7710 GBP

3 1/3p ordinary

Purchase

6,113

1.7724 GBP

3 1/3p ordinary

Purchase

4,495

1.7760 GBP

3 1/3p ordinary

Purchase

4,443

1.7738 GBP

3 1/3p ordinary

Purchase

3,465

1.7709 GBP

3 1/3p ordinary

Purchase

2,408

1.7773 GBP

3 1/3p ordinary

Purchase

2,156

1.7775 GBP

3 1/3p ordinary

Purchase

2,075

1.7735 GBP

3 1/3p ordinary

Purchase

1,811

1.7824 GBP

3 1/3p ordinary

Purchase

1,799

1.7771 GBP

3 1/3p ordinary

Purchase

1,749

1.7714 GBP

3 1/3p ordinary

Purchase

1,620

1.7686 GBP

3 1/3p ordinary

Purchase

1,177

1.7810 GBP

3 1/3p ordinary

Purchase

1,095

1.7844 GBP

3 1/3p ordinary

Purchase

942

1.7748 GBP

3 1/3p ordinary

Purchase

901

1.7680 GBP

3 1/3p ordinary

Purchase

776

1.7712 GBP

3 1/3p ordinary

Purchase

775

1.7820 GBP

3 1/3p ordinary

Purchase

512

1.7899 GBP

3 1/3p ordinary

Purchase

512

1.7900 GBP

3 1/3p ordinary

Purchase

395

1.7690 GBP

3 1/3p ordinary

Purchase

232

1.7800 GBP

3 1/3p ordinary

Purchase

104

1.7725 GBP

3 1/3p ordinary

Sale

73,729

1.7675 GBP

3 1/3p ordinary

Sale

59,639

1.7760 GBP

3 1/3p ordinary

Sale

42,759

1.7758 GBP

3 1/3p ordinary

Sale

23,370

1.7762 GBP

3 1/3p ordinary

Sale

16,732

1.7766 GBP

3 1/3p ordinary

Sale

10,293

1.7763 GBP

3 1/3p ordinary

Sale

5,557

1.7710 GBP

3 1/3p ordinary

Sale

4,611

1.7751 GBP

3 1/3p ordinary

Sale

4,173

1.7759 GBP

3 1/3p ordinary

Sale

4,082

1.7764 GBP

3 1/3p ordinary

Sale

1,435

1.7730 GBP

3 1/3p ordinary

Sale

950

1.7761 GBP

3 1/3p ordinary

Sale

942

1.7750 GBP

3 1/3p ordinary

Sale

775

1.7820 GBP

3 1/3p ordinary

Sale

512

1.7900 GBP

3 1/3p ordinary

Sale

232

1.7800 GBP

3 1/3p ordinary

Sale

224

1.7810 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

33,399

1.7753 GBP

3 1/3p ordinary

SWAP

Decreasing Short

34,240

1.7756 GBP

3 1/3p ordinary

SWAP

Decreasing Short

234

1.7758 GBP

3 1/3p ordinary

SWAP

Decreasing Short

4,173

1.7759 GBP

3 1/3p ordinary

SWAP

Decreasing Short

61,634

1.7760 GBP

3 1/3p ordinary

SWAP

Decreasing Short

6,068

1.7775 GBP

3 1/3p ordinary

SWAP

Decreasing Short

368

1.7820 GBP

3 1/3p ordinary

SWAP

Decreasing Short

156

1.7870 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,620

1.7686 GBP

3 1/3p ordinary

SWAP

Increasing Short

4,511

1.7707 GBP

3 1/3p ordinary

SWAP

Increasing Short

72

1.7711 GBP

3 1/3p ordinary

SWAP

Increasing Short

6,788

1.7718 GBP

3 1/3p ordinary

SWAP

Increasing Short

6,113

1.7724 GBP

3 1/3p ordinary

SWAP

Increasing Short

145,804

1.7731 GBP

3 1/3p ordinary

SWAP

Increasing Short

4,443

1.7738 GBP

3 1/3p ordinary

SWAP

Increasing Short

888

1.7741 GBP

3 1/3p ordinary

SWAP

Increasing Short

4,032

1.7744 GBP

3 1/3p ordinary

SWAP

Increasing Short

15,808

1.7745 GBP

3 1/3p ordinary

SWAP

Increasing Short

5,543

1.7760 GBP

3 1/3p ordinary

SWAP

Increasing Short

61,413

1.7761 GBP

3 1/3p ordinary

SWAP

Increasing Short

3

1.7770 GBP

3 1/3p ordinary

SWAP

Increasing Short

7,792

1.7787 GBP

3 1/3p ordinary

SWAP

Increasing Short

1

1.7810 GBP

3 1/3p ordinary

SWAP

Increasing Short

15,976

1.7832 GBP

3 1/3p ordinary

CFD

Decreasing Short

4,497

1.7758 GBP

3 1/3p ordinary

CFD

Increasing Short

5,673

1.7707 GBP

3 1/3p ordinary

CFD

Increasing Short

7,287

1.7762 GBP

3 1/3p ordinary

CFD

Increasing Short

6,504

1.7765 GBP

3 1/3p ordinary

SWAP

Decreasing Short

73,729

1.7676 GBP

3 1/3p ordinary

SWAP

Decreasing Short

5,743

1.7764 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:

22 Jan 2025

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213