Spirent Regulatory News (SPT)

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:

12 Mar 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:

14,671,448

2.54%

452,504

0.08%

(2)

Cash-settled derivatives:

and/or controlled:

380,948

0.07%

14,505,606

2.51%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

15,052,396

2.60%

14,958,110

2.59%

(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

181,273

1.7841 GBP

3 1/3p ordinary

Purchase

150,000

1.7792 GBP

3 1/3p ordinary

Purchase

36,191

1.7810 GBP

3 1/3p ordinary

Purchase

24,282

1.7831 GBP

3 1/3p ordinary

Purchase

18,913

1.7797 GBP

3 1/3p ordinary

Purchase

18,410

1.7880 GBP

3 1/3p ordinary

Purchase

17,942

1.7796 GBP

3 1/3p ordinary

Purchase

14,033

1.7803 GBP

3 1/3p ordinary

Purchase

11,896

1.7820 GBP

3 1/3p ordinary

Purchase

10,329

1.7804 GBP

3 1/3p ordinary

Purchase

9,555

1.7817 GBP

3 1/3p ordinary

Purchase

9,334

1.7811 GBP

3 1/3p ordinary

Purchase

6,099

1.7836 GBP

3 1/3p ordinary

Purchase

4,155

1.7814 GBP

3 1/3p ordinary

Purchase

2,717

1.7830 GBP

3 1/3p ordinary

Purchase

2,276

1.7788 GBP

3 1/3p ordinary

Purchase

1,667

1.7800 GBP

3 1/3p ordinary

Purchase

1,514

1.7815 GBP

3 1/3p ordinary

Purchase

1,306

1.7813 GBP

3 1/3p ordinary

Purchase

1,095

1.7840 GBP

3 1/3p ordinary

Purchase

784

1.7802 GBP

3 1/3p ordinary

Purchase

489

1.7785 GBP

3 1/3p ordinary

Purchase

128

1.7822 GBP

3 1/3p ordinary

Purchase

56

1.7760 GBP

3 1/3p ordinary

Purchase

41

1.7879 GBP

3 1/3p ordinary

Purchase

1

1.7778 GBP

3 1/3p ordinary

Sale

140,584

1.7806 GBP

3 1/3p ordinary

Sale

110,241

1.7827 GBP

3 1/3p ordinary

Sale

68,301

1.7839 GBP

3 1/3p ordinary

Sale

60,262

1.7780 GBP

3 1/3p ordinary

Sale

48,477

1.7801 GBP

3 1/3p ordinary

Sale

41,873

1.7880 GBP

3 1/3p ordinary

Sale

12,955

1.7797 GBP

3 1/3p ordinary

Sale

9,045

1.7800 GBP

3 1/3p ordinary

Sale

8,595

1.7802 GBP

3 1/3p ordinary

Sale

4,517

1.7803 GBP

3 1/3p ordinary

Sale

3,515

1.7799 GBP

3 1/3p ordinary

Sale

1,599

1.7810 GBP

3 1/3p ordinary

Sale

643

1.7795 GBP

3 1/3p ordinary

Sale

613

1.7830 GBP

3 1/3p ordinary

Sale

489

1.7787 GBP

3 1/3p ordinary

Sale

119

1.7790 GBP

3 1/3p ordinary

Sale

56

1.7760 GBP

3 1/3p ordinary

Sale

35

1.7840 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

CFD

Decreasing Long

12,796

1.7880 GBP

3 1/3p ordinary

CFD

Decreasing Long

17,092

1.7806 GBP

3 1/3p ordinary

SWAP

Decreasing Short

642

1.7795 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,621

1.7808 GBP

3 1/3p ordinary

SWAP

Decreasing Short

6,067

1.7809 GBP

3 1/3p ordinary

SWAP

Decreasing Short

8,140

1.7806 GBP

3 1/3p ordinary

SWAP

Decreasing Short

25,964

1.7880 GBP

3 1/3p ordinary

SWAP

Decreasing Short

28,897

1.7816 GBP

3 1/3p ordinary

SWAP

Decreasing Short

48,477

1.7801 GBP

3 1/3p ordinary

SWAP

Decreasing Short

57,272

1.7806 GBP

3 1/3p ordinary

CFD

Increasing Long

5,865

1.7845 GBP

3 1/3p ordinary

CFD

Increasing Long

12,796

1.7880 GBP

3 1/3p ordinary

SWAP

Increasing Short

5

1.7890 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,060

1.7840 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,514

1.7815 GBP

3 1/3p ordinary

SWAP

Increasing Short

2,104

1.7830 GBP

3 1/3p ordinary

SWAP

Increasing Short

5,278

1.7810 GBP

3 1/3p ordinary

SWAP

Increasing Short

11,896

1.7820 GBP

3 1/3p ordinary

SWAP

Increasing Short

75,013

1.7828 GBP

3 1/3p ordinary

SWAP

Increasing Short

76,171

1.7826 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 Mar 2024

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213