Guardian Metal Resources PLC (GMTL) Stock Price, News & Analysis
What Changed
Price Move History
- Daily moves over 5%
- 46 125 sessions, March 23, 2026 to September 18, 2026
- Largest daily move
- -14.5% close of June 5, 2026
Company Description
Guardian Metal Resources PLC is a U.K. exploration-stage company focused on tungsten and other mineral-resource projects in Nevada, United States. The company's principal tungsten asset is the Pilot Mountain project, followed by the Tempiute project, both of which are located in historic tungsten districts with known occurrences of mineralization and prior third-party tungsten mining activity. Guardian Metal's American Depositary Shares trade on NYSE American under the symbol GMTL, with each ADS representing five ordinary shares.
The company is organized around the exploration and evaluation of mineral resources in Nevada. Its project portfolio has included Pilot Mountain, Tempiute, Golconda Summit, Stonewall, and Garfield, with Guardian Metal identified as the operator of the Golconda Summit project. Current company disclosures emphasize tungsten as the primary strategic focus, with Pilot Mountain described as the company's 100%-owned tungsten project.
Guardian Metal's business model is characteristic of an exploration-stage mining issuer. The company advances mineral projects through exploration, technical studies, engineering work, environmental workstreams, and permitting-related preparation rather than through current commercial mine production. At Pilot Mountain, the company has reported pre-feasibility study activity supported through its wholly owned subsidiary, Golden Metal Resources (USA) LLC, which received a Defense Production Act Title III investment to support the study. The company's disclosures also describe work across engineering, environmental, and drilling-related project activities.
As a public company with securities traded in multiple markets, Guardian Metal reports ordinary share capital, voting-rights notices, option exercises, holdings notifications, board changes, and project updates. Its ordinary shares are associated with the London market under GMET, its U.S. American Depositary Shares trade under GMTL, and its over-the-counter U.S. quotation has appeared under GMTLF. The company's public-company profile combines U.K. issuer reporting, U.S. foreign-issuer disclosures, and project-level mining exploration updates centered on Nevada tungsten assets.
Stock Performance
Guardian Metal Resources PLC (GMTL) closed at $10.50 on September 18, 2026. Over the past month, the price has lost 17.1%.
GMTL Metrics & Rankings
Price returns through September 18, 2026. Month-to-date and YTD include the first trading day. Ranking links may use different dates.
Latest News
Guardian Metal Resources PLC has 10 recent news articles, with the latest published today. Of the recent coverage, 5 articles coincided with positive price movement and 4 with negative movement. Key topics include earnings. View all GMTL news →
SEC Filings
Guardian Metal Resources PLC has filed 10 recent SEC filings, including 6 Form 6-K, 1 Form POS AM, 1 Form 20-F, 1 Form SCHEDULE 13G/A. The most recent filing was submitted on September 17, 2026. SEC filings provide transparency into a company's financial condition, material events, and regulatory compliance. View all GMTL SEC filings →
Financial Highlights
Upcoming Events
Underground workings rehab
Thorpe option vesting
Schlumpberger option vesting
Section 854 effective date
Remaining Warrants Expiry
Schlumpberger expiry immediate
Schlumpberger expiry deferred
Friesen exercise deadline
Guardian Metal Resources PLC has 8 upcoming scheduled events. The next event, "Underground workings rehab", is scheduled for October 1, 2026 (in 9 days). 1 of the upcoming events are financial in nature, such as earnings calls or quarterly results. Investors can track these dates to stay informed about potential catalysts that may affect the GMTL stock price.
Short Interest History
Short interest in Guardian Metal Resources PLC (GMTL) currently stands at 350.4 thousand shares, up 12.5% from the previous reporting period, representing 0.9% of the float. Since March 2026, short interest has increased by 589.8%. This relatively low short interest suggests limited bearish sentiment.
Days to Cover History
Days to cover for Guardian Metal Resources PLC (GMTL) currently stands at 2.4 days, up 62.8% from the previous period. This days-to-cover ratio represents a balanced liquidity scenario for short positions. The days to cover has increased 141% over the past year, indicating either rising short interest or declining trading volume. The ratio has shown significant volatility over the period, ranging from 1.0 to 2.4 days.
GMTL Company Profile & Sector Positioning
Guardian Metal Resources PLC (GMTL) operates in the Other Precious Metals & Mining industry within the broader Basic Materials sector and is listed on the NYSE.