Welcome to our dedicated page for Guardian Metal Resources PLC SEC filings (Ticker: GMTL), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Guardian Metal Resources PLC filings document U.S. foreign-issuer current reports for a Nevada-focused tungsten exploration company. The company's Form 6-K reports furnish press releases and exhibits covering Pilot Mountain pre-feasibility activity, total voting rights, option exercises, major-holdings notifications, and governance changes.
The filing record also describes the company's public-company structure, including ordinary-share capital, American Depositary Shares, FCA Disclosure and Transparency Rules notices, and ownership thresholds reported through TR-1 major-holdings notifications. These disclosures connect project-level mining updates with capital-structure and shareholder-reporting information for the issuer.
Guardian Metal Resources is preparing to release the Pre-Feasibility Study (PFS) results for its Pilot Mountain tungsten project in Nevada on 30 June 2026. This marks a key development step toward what the company aims to be the first new domestically mined U.S. tungsten operation in over 15 years.
The PFS is led by Guardian Metal’s in-house team with Samuel Engineering and other specialists, and is supported by a $6.2m Defense Production Act Title III investment from the U.S. Department of War into its U.S. subsidiary. Following publication, the company will host a live investor presentation via 6ix on 01 July 2026 at 11:00 ET / 16:00 BST to discuss the Study and outline next steps for Pilot Mountain.
Guardian Metal recently listed on the NYSE American and is advancing two Nevada tungsten projects, Pilot Mountain and Tempiute, positioning itself as a strategic supplier of this critical defense and industrial metal, while cautioning that project development depends on regulatory approvals, technical results, and other risks described in its SEC filings.
Power Metal Resources PLC submitted a Form 144 reporting a proposed sale of 29,758,334 American Depositary Shares (ADS) on 02/20/2025. Each ADS represents five ordinary shares. The filing lists a block trade at prevailing market price and names BMO Capital Markets Corp. as a broker.
Guardian Metal Resources PLC reported an updated major shareholding for Purebond Limited, which now holds 5.004928% of the company’s voting rights, representing 9,750,000 voting rights attached to shares. This slightly down from 5.025566% previously. Purebond Limited and related parties jointly hold 6.316197% of voting rights in the company.
Guardian Metal Resources PLC has acquired Lincoln Estates Group LLC in Nevada, securing 841 acres of mixed-use land and 2,540 acre-feet per year of water rights. The property lies less than 10 miles from the Tempiute Tungsten Project and has direct access from Highway 375.
The purchase, completed through a wholly owned U.S. subsidiary, totals US$1.3 million in cash. Management describes the deal as a key step in de-risking and advancing Tempiute by combining newly acquired water and land rights with existing site infrastructure to support future exploration and potential redevelopment.
Guardian Metal Resources PLC has formally appointed Dr Mark Bramley Thorpe, aged 66, to its Board as an Independent Non-executive Director with immediate effect. He will also serve on the Audit Committee, replacing Mark Burnett, who previously retired from the Board.
The company is a mineral exploration business focused on tungsten projects in Nevada, including Pilot Mountain and Tempiute. In July 2025, the U.S. Department of War invested US$6 in its U.S. subsidiary to support a Pilot Mountain pre-feasibility study, and the company completed a listing on the NYSE American on March 20, 2026.
Guardian Metal Resources plc reported the discovery of the newly identified “Tremor Zone” tungsten-skarn zone at its 100%-owned Pilot Mountain Project in Nevada. The zone was found during condemnation drilling for the ongoing Pre-Feasibility Study.
Initial drillhole PMR26-077 intersected five tungsten-rich intervals, including 13.68 metres grading 0.31% WO3 from 102.11 to 115.82 metres downhole, plus several shorter mineralised intercepts. Follow-up drilling in adjacent holes visually identified tungsten-bearing skarn over widths of up to 66 metres, and the Tremor Zone has been traced over roughly 400 metres of strike, remaining open in multiple directions.
The Tremor Zone will not be included in the upcoming PFS, but infrastructure planning has been kept flexible for possible future incorporation after more drilling and technical work. The PFS is supported by a $6.2m Defense Production Act Title III investment into Guardian Metal’s U.S. subsidiary, underscoring the strategic importance of tungsten to U.S. defense supply chains.
Guardian Metal Resources PLC supplements its May 8, 2026 prospectus to register the resale by selling shareholders of up to 72,111,177 ordinary shares, including in the form of American Depositary Shares. Each ADS represents five ordinary shares. The resale is by the selling shareholders or their transferees and is registered on a prospectus supplement filed May 21, 2026.
The supplement also attaches a Form 6-K disclosing the appointment of Dr. Mark Thorpe as an Independent Non-Executive Director, replacing Mark Burnett, subject to completion of the required AIM due diligence process.
Guardian Metal Resources PLC has appointed Dr. Mark Thorpe to its Board as an Independent Non-Executive Director, subject to completion of the required AIM due diligence process. He replaces Mark Burnett, who steps down as Non-Executive Director to focus on other business interests after helping build the company over the past five years.
Dr. Thorpe brings more than 30 years of global mining experience, specialising in sustainability, environmental permitting, community engagement and mine-life-cycle management. The company describes his appointment as an important step as it advances its Nevada tungsten projects and pursues its strategy to help re-establish U.S.-mined tungsten supply.
Guardian Metal Resources PLC reports a major update on historical mine tailings at its Tempiute Tungsten Project in Nevada. Mapping and sampling show tungsten-enriched tailings covering about 550 acres (2.23 km²), and the company has staked 193 mining claims, increasing the Tempiute footprint by over 375%.
Subject to permits, an auger drilling program is targeted to start in June 2026 and run for around three months to characterize tailings and surrounding soils for both environmental evaluation and tungsten resource potential. An independent metallurgical study will assess how best to recover tungsten and other metals and inform the final reclamation design.
Tempiute, a past-producing tungsten mine, is positioned as a co-flagship asset alongside Pilot Mountain as Guardian Metal pursues its strategy to help re-establish a secure, domestically mined U.S. tungsten supply chain for defense and industrial uses.