Director/PDMR Shareholding

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Michael Willome

2

Reason for the notification

a)

Position/status

Chief Executive Officer

b)

Initial notification /Amendment

Initial notification

3

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

a)

Name

Synthomer plc

b)

LEI

213800EHT3TI1KPQQJ56

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Identification code

Ordinary shares of 10p each

GB0009887422

b)

Nature of the transaction

Grant of nil cost option under the Synthomer Performance Share Plan subject to performance conditions

c)

Price(s) and volume(s)

d)

Aggregated information

- Aggregated volume

- Price

1,173,799

Nil

e)

Date of the transaction

4 April 2023

f)

Place of the transaction

Not applicable