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:

27 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:

16,256,582

2.81%

351,995

0.06%

(2)

Cash-settled derivatives:

and/or controlled:

311,155

0.05%

16,069,208

2.78%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

16,567,737

2.86%

16,421,203

2.84%

(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

96,267

1.7689 GBP

3 1/3p ordinary

Purchase

45,394

1.7600 GBP

3 1/3p ordinary

Purchase

33,512

1.7661 GBP

3 1/3p ordinary

Purchase

24,998

1.7899 GBP

3 1/3p ordinary

Purchase

24,852

1.7636 GBP

3 1/3p ordinary

Purchase

23,012

1.7877 GBP

3 1/3p ordinary

Purchase

19,787

1.7734 GBP

3 1/3p ordinary

Purchase

11,546

1.7682 GBP

3 1/3p ordinary

Purchase

8,745

1.7668 GBP

3 1/3p ordinary

Purchase

8,544

1.7724 GBP

3 1/3p ordinary

Purchase

7,358

1.7615 GBP

3 1/3p ordinary

Purchase

5,086

1.7630 GBP

3 1/3p ordinary

Purchase

3,607

1.7610 GBP

3 1/3p ordinary

Purchase

2,611

1.7744 GBP

3 1/3p ordinary

Purchase

2,576

1.7839 GBP

3 1/3p ordinary

Purchase

2,483

1.7620 GBP

3 1/3p ordinary

Purchase

2,322

1.7641 GBP

3 1/3p ordinary

Purchase

2,032

1.7679 GBP

3 1/3p ordinary

Purchase

1,559

1.7780 GBP

3 1/3p ordinary

Purchase

1,418

1.7725 GBP

3 1/3p ordinary

Purchase

1,123

1.7655 GBP

3 1/3p ordinary

Purchase

897

1.7900 GBP

3 1/3p ordinary

Purchase

647

1.7654 GBP

3 1/3p ordinary

Purchase

554

1.7650 GBP

3 1/3p ordinary

Purchase

546

1.7750 GBP

3 1/3p ordinary

Purchase

127

1.7720 GBP

3 1/3p ordinary

Sale

227,098

1.7839 GBP

3 1/3p ordinary

Sale

61,472

1.7784 GBP

3 1/3p ordinary

Sale

60,084

1.7600 GBP

3 1/3p ordinary

Sale

20,000

1.7695 GBP

3 1/3p ordinary

Sale

12,942

1.7641 GBP

3 1/3p ordinary

Sale

10,294

1.7710 GBP

3 1/3p ordinary

Sale

8,100

1.7655 GBP

3 1/3p ordinary

Sale

5,007

1.7677 GBP

3 1/3p ordinary

Sale

3,885

1.7750 GBP

3 1/3p ordinary

Sale

3,239

1.7640 GBP

3 1/3p ordinary

Sale

1,557

1.7691 GBP

3 1/3p ordinary

Sale

1,168

1.7690 GBP

3 1/3p ordinary

Sale

1,138

1.7687 GBP

3 1/3p ordinary

Sale

897

1.7900 GBP

3 1/3p ordinary

Sale

554

1.7650 GBP

3 1/3p ordinary

Sale

42

1.7625 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

1,418

1.7724 GBP

3 1/3p ordinary

SWAP

Decreasing Long

1,669

1.7711 GBP

3 1/3p ordinary

SWAP

Decreasing Long

2,212

1.7736 GBP

3 1/3p ordinary

SWAP

Decreasing Long

4,663

1.7723 GBP

3 1/3p ordinary

SWAP

Decreasing Short

484

1.7660 GBP

3 1/3p ordinary

SWAP

Decreasing Short

587

1.7657 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,043

1.7689 GBP

3 1/3p ordinary

SWAP

Decreasing Short

1,138

1.7687 GBP

3 1/3p ordinary

SWAP

Decreasing Short

3,709

1.7676 GBP

3 1/3p ordinary

SWAP

Decreasing Short

3,885

1.7750 GBP

3 1/3p ordinary

SWAP

Decreasing Short

8,010

1.7696 GBP

3 1/3p ordinary

SWAP

Decreasing Short

8,100

1.7655 GBP

3 1/3p ordinary

SWAP

Decreasing Short

9,130

1.7600 GBP

3 1/3p ordinary

SWAP

Decreasing Short

18,498

1.7681 GBP

3 1/3p ordinary

SWAP

Decreasing Short

28,789

1.7900 GBP

3 1/3p ordinary

SWAP

Decreasing Short

66,067

1.7743 GBP

3 1/3p ordinary

SWAP

Decreasing Short

66,275

1.7745 GBP

3 1/3p ordinary

SWAP

Decreasing Short

100,000

1.7898 GBP

3 1/3p ordinary

SWAP

Increasing Short

596

1.7900 GBP

3 1/3p ordinary

SWAP

Increasing Short

1,277

1.7743 GBP

3 1/3p ordinary

SWAP

Increasing Short

2,576

1.7839 GBP

3 1/3p ordinary

SWAP

Increasing Short

3,607

1.7610 GBP

3 1/3p ordinary

SWAP

Increasing Short

6,420

1.7654 GBP

3 1/3p ordinary

CFD

Increasing Short

20,750

1.7722 GBP

3 1/3p ordinary

SWAP

Increasing Short

33,512

1.7661 GBP

3 1/3p ordinary

SWAP

Increasing Short

63,199

1.7601 GBP

3 1/3p ordinary

SWAP

Increasing Short

68,640

1.7750 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 Mar 2024

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213