Director/PDMR Shareholding

Summary by AI ^BETAClose X

Diploma PLC has announced that three individuals discharging managerial responsibilities have purchased ordinary shares. On March 19, 2026, Senior Independent Director Katie Bickerstaffe bought 251 shares for £59.25 each, increasing her holding to 2,120 shares, and Non-Executive Director Geraldine Huse acquired 535 shares at £58.34 each, bringing her total to 3,726 shares. Additionally, on March 20, 2026, Non-Executive Director Ian El-Mokadem purchased 500 shares for £58.20 each, resulting in a total holding of 1,500 shares. These transactions, all purchases of ordinary shares, were made on the London Stock Exchange.

Disclaimer*

Diploma PLC

23 March 2026

A purple text on a black background Description automatically generated 10-11 CHARTERHOUSE SQUARE,
LONDON EC1M 6EE
TELEPHONE: +44 (0)20 7549 5700

23 March 2026

Notification of transactions by persons discharging managerial responsibilities (PDMRs)

Diploma PLC (the "Company") has been notified that on 19 March 2026, Katie Bickerstaffe, Senior Independent Director of the Company, purchased 251 Ordinary Shares in the Company. Following this transaction, Katie Bickerstaffe's total shareholding is 2,120 Ordinary Shares.

The Company has also been notified that on 19 March 2026, Geraldine Huse, Non-Executive Director of the Company, purchased 535 Ordinary Shares in the Company. Following this transaction, Geraldine Huse's total shareholding is 3,726 Ordinary Shares.

The Company has also been notified that on 20 March 2026, Ian El-Mokadem, Non-Executive Director of the Company, purchased 500 Ordinary Shares in the Company. Following this transaction, Ian El-Mokadem's total shareholding is 1,500 Ordinary Shares.

The Notification of Dealing Form can be found below. This announcement is made in accordance with the UK Market Abuse Regulation (Regulation (EU) 596/2014, as it forms part of domestic law by virtue of the European Union (Withdrawal) Act 2018).

Details of the Director/PDMR/PCA

Name

1. Katie Bickerstaffe

2. Geraldine Huse

3. Ian El-Mokadem

Reason for the notification

Position/Status

1. Senior Independent Director

2. Non-Executive Director

3. Non-Executive Director

Initial notification/
Amendment

Initial notification

Details of the issuer

Name

Diploma PLC

LEI

2138008OGI7VYG8FGR19

Details of the transactions:

Description of the financial instrument, type of instrument

Identification code

Ordinary shares of 5p each in the Company

GB0001826634

Nature of the transaction

Purchase of Shares

Price(s) and volume(s)

Price(s) Volume(s)

1. £59.25 251

2. £58.34 535

3. £58.20 500

Aggregated information

Aggregated Aggregated

Volume Price

1. 251 £14,871.75

2. 535 £31,211.90

3. 500 £29,100

- Aggregated volume

- Price

Date of the transaction

1. 19 March 2026

2. 19 March 2026

3. 20 March 2026

Place of the transaction

London Stock Exchange

For further information please contact:

Diploma PLC	Tel: +44 (0)20 7549 5700
Anna Lawrence, Group Company Secretary

LEI: 2138008OGI7VYG8FGR19

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