Director/PDMR Shareholding

1.

Details of PDMR / person closely associated

Name

Eric Updyke

2.

Reason for the notification

a)

Position / status

CEO

b)

Initial notification / amendment

Initial notification

3.

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Full name of the entity

Spirent Communications plc

b)

Legal Entity Identifier Code

213800HKCUNWP1916L38

4.

Details of the transaction(s)

a)

Description of the financial instrument

Identification code

Ordinary shares of 3 1/3 pence each

GB0004726096

b)

Nature of the transaction

Award of Restricted Stock Units under the Spirent Communications plc Deferred Bonus Plan

c)

Price(s) and volume(s)

d)

Aggregated information

- Aggregated volume

- price

110,513

GBP0.00

e)

Date of the transaction

15 March 2023

f)

Place of the transaction

Outside a trading venue

1.

Details of PDMR / person closely associated

Name

Eric Updyke

2.

Reason for the notification

a)

Position / status

CEO

b)

Initial notification / amendment

Initial notification

3.

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Full name of the entity

Spirent Communications plc

b)

Legal Entity Identifier Code

213800HKCUNWP1916L38

4.

Details of the transaction(s)

a)

Description of the financial instrument

Identification code

Ordinary shares of 3 1/3 pence each

GB0004726096

b)

Nature of the transaction

Award of Performance Shares (nil-cost options) under the Spirent Long-term Incentive Plan

c)

Price(s) and volume(s)

d)

Aggregated information

- Aggregated volume

- price

833,472

GBP0.00

e)

Date of the transaction

15 March 2023

f)

Place of the transaction

Outside a trading venue

1.

Details of PDMR / person closely associated

Name

Paula Bell

2.

Reason for the notification

a)

Position / status

CFO

b)

Initial notification / amendment

Initial notification

3.

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Full name of the entity

Spirent Communications plc

b)

Legal Entity Identifier Code

213800HKCUNWP1916L38

4.

Details of the transaction(s)

a)

Description of the financial instrument

Identification code

Ordinary shares of 3 1/3 pence each

GB0004726096

b)

Nature of the transaction

Award of Restricted Stock Units under the Spirent Communications plc Deferred Bonus Plan

c)

Price(s) and volume(s)

d)

Aggregated information

- Aggregated volume

- price

60,632

GBP0.00

e)

Date of the transaction

15 March 2023

f)

Place of the transaction

Outside a trading venue

1.

Details of PDMR / person closely associated

Name

Paula Bell

2.

Reason for the notification

a)

Position / status

CFO

b)

Initial notification / amendment

Initial notification

3.

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Full name of the entity

Spirent Communications plc

b)

Legal Entity Identifier Code

213800HKCUNWP1916L38

4.

Details of the transaction(s)

a)

Description of the financial instrument

Identification code

Ordinary shares of 3 1/3 pence each

GB0004726096

b)

Nature of the transaction

Award of Performance Shares (nil-cost options) under the Spirent Long-term Incentive Plan

c)

Price(s) and volume(s)

d)

Aggregated information

- Aggregated volume

- price

395,192

GBP0.00

e)

Date of the transaction

15 March 2023

f)

Place of the transaction

Outside a trading venue

PDMR

Total number of shares over which options held

Eric Updyke

2,467,853

Paula Bell

1,298,668