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:

20 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:

14,918,637

2.58%

5,890,683

1.02%

(2)

Cash-settled derivatives:

and/or controlled:

1,881,495

0.33%

14,855,512

2.57%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

16,800,132

2.90%

20,746,195

3.59%

(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

87,972

1.8885 GBP

3 1/3p ordinary

Purchase

37,633

1.8902 GBP

3 1/3p ordinary

Purchase

26,571

1.8849 GBP

3 1/3p ordinary

Purchase

23,962

1.8904 GBP

3 1/3p ordinary

Purchase

17,832

1.8850 GBP

3 1/3p ordinary

Purchase

16,216

1.8862 GBP

3 1/3p ordinary

Purchase

12,065

1.8896 GBP

3 1/3p ordinary

Purchase

10,398

1.8884 GBP

3 1/3p ordinary

Purchase

6,813

1.8895 GBP

3 1/3p ordinary

Purchase

6,271

1.8923 GBP

3 1/3p ordinary

Purchase

3,813

1.8860 GBP

3 1/3p ordinary

Purchase

3,358

1.8863 GBP

3 1/3p ordinary

Purchase

3,139

1.8875 GBP

3 1/3p ordinary

Purchase

2,036

1.8893 GBP

3 1/3p ordinary

Purchase

1,820

1.8900 GBP

3 1/3p ordinary

Purchase

1,547

1.8915 GBP

3 1/3p ordinary

Purchase

67

1.8897 GBP

3 1/3p ordinary

Purchase

1

1.8918 GBP

3 1/3p ordinary

Sale

984,467

1.8890 GBP

3 1/3p ordinary

Sale

85,260

1.8894 GBP

3 1/3p ordinary

Sale

59,331

1.8866 GBP

3 1/3p ordinary

Sale

42,457

1.8898 GBP

3 1/3p ordinary

Sale

13,116

1.8883 GBP

3 1/3p ordinary

Sale

8,516

1.8850 GBP

3 1/3p ordinary

Sale

7,116

1.8900 GBP

3 1/3p ordinary

Sale

5,966

1.8868 GBP

3 1/3p ordinary

Sale

2,872

1.8860 GBP

3 1/3p ordinary

Sale

1,196

1.8875 GBP

3 1/3p ordinary

Sale

838

1.8880 GBP

3 1/3p ordinary

Sale

13

1.8896 GBP

3 1/3p ordinary

Sale

1

1.8920 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 Long

2,036

1.8893 GBP

3 1/3p ordinary

SWAP

Decreasing Long

16,216

1.8862 GBP

3 1/3p ordinary

SWAP

Decreasing Long

16,216

1.8865 GBP

3 1/3p ordinary

CFD

Decreasing Short

1

1.8900 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1

1.9480 GBP

3 1/3p ordinary

SWAP

Decreasing Short

100

1.8899 GBP

3 1/3p ordinary

SWAP

Decreasing Short

141

1.8889 GBP

3 1/3p ordinary

SWAP

Decreasing Short

838

1.8880 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,915

1.8930 GBP

3 1/3p ordinary

CFD

Decreasing Short

2,450

1.8878 GBP

3 1/3p ordinary

SWAP

Decreasing Short

3,476

1.8900 GBP

3 1/3p ordinary

CFD

Decreasing Short

8,515

1.8850 GBP

3 1/3p ordinary

SWAP

Decreasing Short

8,553

1.8927 GBP

3 1/3p ordinary

SWAP

Decreasing Short

16,400

1.8998 GBP

3 1/3p ordinary

SWAP

Decreasing Short

42,457

1.8898 GBP

3 1/3p ordinary

SWAP

Decreasing Short

56,495

1.8879 GBP

3 1/3p ordinary

SWAP

Decreasing Short

982,048

1.8890 GBP

3 1/3p ordinary

SWAP

Increasing Short

6,271

1.8923 GBP

3 1/3p ordinary

SWAP

Increasing Short

19,350

1.8850 GBP

3 1/3p ordinary

SWAP

Increasing Short

19,459

1.8850 GBP

3 1/3p ordinary

SWAP

Increasing Short

23,962

1.8904 GBP

3 1/3p ordinary

CFD

Increasing Short

27,413

1.8936 GBP

3 1/3p ordinary

CFD

Increasing Short

32,621

1.8890 GBP

3 1/3p ordinary

SWAP

Increasing Short

37,633

1.8902 GBP

3 1/3p ordinary

SWAP

Opening Long

10,050

1.8850 GBP

3 1/3p ordinary

SWAP

Opening Long

21,750

1.8885 GBP

3 1/3p ordinary

SWAP

Opening Long

46,106

1.8851 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:

21 May 2024

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213