Guardian Metal Resources PLC Announces Board Update

LONDON, UK / ACCESS Newswire / November 11, 2025 / Further to its announcement of board changes on 3 November 2025 and the conclusion of necessary due diligence, Guardian Metal Resources plc (AIM:GMET)(OTCQX:GMTLF), a mineral exploration and development company focused on tungsten within Nevada, USA, announces the formal appointment of Mr Michael Xavier Schlumpberger to its Board with immediate effect.

Michael will be an Independent Non-executive Director of Guardian Metal and will be a member of the Audit Committee and the Remuneration Committee. He replaces Mr. Mick Billing who is retiring from the Board, as announced previously.

Regulatory Disclosures:

The following information is disclosed pursuant to Rule 17 and Schedule Two paragraph (g) of the AIM Rules for Companies in relation to Mr. Schlumpberger, aged 62:

Current directorships and/or partnerships:	Former directorships and/or partnerships (within the last five years):
Rapid Critical Metals Limited (Australia) Spur Ranch Association (USA) Schlumpberger Inc; (USA)	Fort Cady (California) Corporation (USA) Fort Cady Holdings Pty Ltd (Australia) American Pacific Borates Pty Ltd (Australia)

There is no further information to be disclosed pursuant to paragraph (g) of Schedule 2 of the AIM rules.

For further information visit www.guardianmetalresources.com or contact the following:

Guardian Metal Resources plc Oliver Friesen (CEO)	Tel: [phone]
Cairn Financial Advisers LLP (Nominated Adviser) Sandy Jamieson/Jo Turner/Louise O'Driscoll	Tel: [phone]
Tamesis Partners LLP (Lead Broker) Charlie Bendon/ Richard Greenfield	Tel: [phone]