450 Plc Regulatory News (450)

THIS ANNOUNCEMENT AND THE INFORMATION CONTAINED HEREIN IS NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN OR INTO THE UNITED STATES, AUSTRALIA, CANADA, THE REPUBLIC OF SOUTH AFRICA, JAPAN, ANY MEMBER STATE OF THE EUROPEAN ECONOMIC AREA OR ANY JURISDICTION IN WHICH IT WOULD BE UNLAWFUL TO DO SO.

22 August 2025

LEI number: 2138004EUUU11OVHZW75

This announcement contains inside information.

450 plc

(the "Company")

Board Changes

The Company announces that Waheed Alli will return to his role as Chair, effective immediately.

The Company also announces that Andrew Lindsay has resigned from the Board as Executive Chairman with immediate effect for personal reasons. The Board would like to thank Andrew for his contribution to the Company since his appointment and wish him well for his future endeavours.

Enquiries:

450 plc

Tel: +44(0)207 004 2700

Waheed Alli

James Corsellis

Deutsche Numis (Nominated Adviser and Broker)

Tel: +44(0)207 260 1000

Kevin Cruickshank

Jamie Loughborough

The person responsible for arranging the release of this announcement on behalf of the Company is James Corsellis, Director of the Company.