Director/PDMR Shareholding

Halma plc Directors' and PDMRs' Share Transactions

In accordance with Article 19 of the Market Abuse Regulation, notification is hereby given of a transaction in the 10p ordinary shares of Halma by a Director, as set out below.

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Steve Gunning

2

Reason for the notification

a)

Position/status

Chief Financial Officer

b)

Initial notification /Amendment

Initial notification

3

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

a)

Name

Halma plc

b)

LEI

2138007FRGLUR9KGBT40

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 in Halma plc

GB0004052071

b)

Nature of the transaction

Grant of Performance Share Award under the Executive Share Plan

c)

Price(s) and volume(s)

d)

Aggregated information

- Aggregated volume

- Price

68,181

Nil

e)

Date of the transaction

2023-02-27

f)

Place of the transaction

Outside a trading venue

Contact for further information:

Mark Jenkins

Company Secretary, Halma plc

Tel: +44 (0)1494 721111

A copy of this announcement, together with other information about Halma, may be viewed on its website:  www.halma.com