Michael Schlumpberger

Guardian Metal Resources (GMTLF) appointed Michael Xavier Schlumpberger as an Independent Non-executive Director, effective November 11, 2025, replacing retiring director Mick Billing. Schlumpberger will serve on the Audit and Remuneration Committees. This appointment supports Guardian Metal’s strategy to revive U.S. tungsten production, a critical metal for defense, energy, technology and industrial sectors. Regulatory details regarding Schlumpberger’s directorships are disclosed in the announcement.