Geiger Counter Limited
(the "Company")

2 June 2026

Appointment of Non-Executive Director

The Board is pleased to announce that Brona Lambert has been appointed as a non-executive director and will be joining the Company's board with effect from 1 June 2026. Brona will also be appointed as the chair of the Company's Audit and Risk Committee.

Brona has extensive experience as a financial professional with over thirty years' experience with local and international financial services clients, including regulated funds, fiduciary services businesses, and investment management structures.  Brona is a Fellow of the Institute of Chartered Accountants of England and Wales, undergoing training with PwC and gaining further experience with KPMG.  Brona subsequently worked with Moore Stephens Jersey, becoming a Partner in 2009, before subsequently joining BDO as Director of Outsourcing in Jersey.

In accordance with paragraph 6.4.8 (1) to (6) of the UK Listing Rules, it is confirmed that there are no additional details to be disclosed in relation to Ms Lambert.

Gary Clark, Chair of the Company, said:

"I am delighted to welcome Brona to the Company's board. She has been selected from a pool of strong candidates and brings a wide range of expertise, experience and interpersonal skills to the Company."

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