Publication of Q4 2026 Presentation

RNS REACH

21 October 2026

GREAT WESTERN MINING CORPORATION PLC

(“Great Western”, “GWM” or the “Company”)

Q4 2026 Corporate Presentation

Great Western Mining Corporation PLC (AIM: GWMO / Euronext Growth: 8GW / OTCQB: GWMOF), a strategic minerals exploration and development company, is pleased to announce that its Q4 2026 Corporate Presentation is now available on its website at https://www.greatwesternmining.com/investors/company-presentations/.  No material new financial or other information has been disclosed.  

The presentation highlights recent progress at the Company's Defender Tungsten Project in Nevada, including completion of a 23-hole drilling programme and encouraging initial metallurgical results achieving approximately 93% tungsten recovery into a rougher concentrate. It also outlines the next steps towards a maiden Mineral Resource Estimate and provides an overview on the wider copper and precious metals portfolio.

ENDS

For further information visit www.greatwesternmining.com or contact:

Notes

Great Western Mining Corporation PLC (AIM: GWMO / Euronext Growth: 8GW / OTCQB: GWMOF) is an exploration and development company focused on strategic minerals across several 100%-owned claim groups in Mineral County, Nevada, a highly prospective and mining-friendly jurisdiction. The Company has an increasing strategic emphasis on tungsten as a critical mineral, while continuing to advance its Huntoon Copper Project, which hosts a JORC-compliant resource of 4.3 Mt at 0.45% Cu with further porphyry upside. It also maintains exposure to gold and silver through exploration and tailings reprocessing opportunities, alongside evaluating farm-out and joint venture options to unlock wider portfolio value.