6-K
Guardian Metal Resources PLC (GMTL)
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 6-K
REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13A-16 OR 15D-16 OF THE SECURITIES EXCHANGE ACT OF 1934
11 June, 2026
Commission File Number 001-43199
Guardian Metal Resources PLC
c/o Orana Corporate LLP
25 Eccleston Place
London SW1W 9NF
United Kingdom
(Address of principal executive offices)
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
| Form 20-F ☒ | Form 40-F ☐ |
|---|
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ___
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ____
Guardian Metal Resources PLC
On 11 June, 2026, Guardian Metal Resources PLC issued a press release titled “Board Update”
A copy of the press release is attached hereto as Exhibit 99.1.
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on behalf by the undersigned, thereunto duly authorized.
Guardian Metal Resources PLC
(Registrant)
| Date:<br>11 June, 2026 | By: /s/<br>Oliver Friesen | |
|---|---|---|
| Name:<br>Oliver Friesen | ||
| Title:<br>Chief Executive Officer |
Exhibit Index
| Exhibit | Description of Exhibit |
|---|---|
| 99.1 | Board Update dated 11 June, 2026. |
11 June 2026
Guardian Metal Resources plc
('Guardian Metal' or the 'Company')
Board Update
Further to its announcement of board changes on 21 May 2026 and the conclusion of necessary due diligence, Guardian Metal Resources plc (NYSE-A: GMTL, LON: GMET, OTCQB: GMTLF), a mineral exploration company focused on tungsten within Nevada, USA, announces the formal appointment of Dr Mark Bramley Thorpe to its Board with immediate effect.
Mark will be an Independent Non-executive Director of Guardian Metal and will be a member of the Audit Committee. He replaces Mr. Mark Burnett who retired 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. Thorpe, aged 66 :
| Current directorships and/or partnerships: | Former directorships and/or partnerships (within the last five<br>years): |
|---|---|
| - | Envirogold<br>Global Limited (Canada)<br><br><br>Canada<br>Mining Innovation Council (Canada) |
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<br><br><br>Oliver<br>Friesen (CEO) | Tel: +44 (0)<br>20 7583 8304 |
|---|---|
| Cairn Financial Advisers LLP<br><br><br>Nominated<br>Adviser<br><br><br>Sandy<br>Jamieson/Jo Turner/Louise O'Driscoll | Tel:<br>+44 (0) 20 7213 0880 |
| Berenberg<br><br><br>Joint<br>Broker and Financial Adviser<br><br><br>Jennifer Lee/Ivan<br>Briechle | Tel: +44 (0)<br>20 3207 7800 |
| Tamesis Partners LLP<br><br><br>Joint<br>Broker<br><br><br>Charlie<br>Bendon/Richard Greenfield | Tel:<br>+44 (0) 20 3882 2868 |
| Tavistock<br><br><br>Financial<br>PR in the UK<br><br><br>Emily<br>Moss/Josephine Clerkin | Tel:<br>+44 (0) 7920 3150 /<br><br><br>+44 (0)<br>7788 554035<br><br><br>[email protected] |
| Edelman Smithfield<br><br><br>Financial<br>PR in the US | [email protected] |
About Guardian Metal Resources
Guardian Metal Resources PLC (NYSE.A: GMTL, LON:GMET, OTCQB:GMTLF) is a strategic mineral exploration company driving the revival of U.S. mined tungsten production and strengthening America's defense metal independence. The Company is advancing two co-flagship tungsten projects, Pilot Mountain, one of the largest undeveloped tungsten deposits in the U.S. and Tempiute, formerly America's largest producing tungsten operation, both located in Nevada, one of the top-rated mining jurisdictions in the United States.
In July 2025, the U.S. Department of War (DoW) under Title III of the Defense Production Act of 1950, as amended, invested US$6.2M in Golden Metal Resources (USA) LLC, a wholly-owned subsidiary of Guardian Metal Resources PLC, to support the Pilot Mountain PFS. The Company completed a U.S. listing on the NYSE American on March 20, 2026.
Tungsten is a strategic metal critical to the defense, energy transition, technology, and industrial sectors. In the context of shifting geopolitical dynamics and tightening Chinese export restrictions, Guardian Metal is well positioned to play a leading role in re-establishing a secure, domestically mined U.S. supply chain for this vital defense metal.