Director/PDMR Shareholding

Halma plc has received notification that Dame Louise Makin, Non-Executive Director and Chair Designate of the Company, purchased 10,000 ordinary shares in the Company at £24.59 per share on 9 February 2021.

The notification below, made in accordance with the requirements of the Market Abuse Regulation, provides further detail.

Notification and public disclosure of transactions by persons discharging managerial responsibilities and persons closely associated with them

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Dame Louise Makin

2

Reason for the notification

a)

Position/status

Non-Executive Director and Chair Designate

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 10 pence each in Halma plc

GB0004052071

b)

Nature of the transaction

Purchase of shares

c)

Price(s) and volume(s)

d)

Aggregated information

- Aggregated price

- Aggregated volume

- Aggregated total

£24.5906

10,000

£245,906

e)

Date of the transaction

2021-02-09

f)

Place of the transaction

XOFF

Contact for further information:

Mark Jenkins

Company Secretary, Halma plcTel: +44 (0)1494 721111

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