Trevali Mining Corporation - Post Filing Claims Process

Pursuant to the Post-Filing Claims Process Order granted by the Supreme Court of British Columbia on September 29, 2026, a Post-Filing Claims Process has been established by which claims against the directors and officers of Trevali Mining Corporation and Trevali Mining (New Brunswick) Ltd. arising after August 19, 2022, may be proved. Please note that certain steps must be taken prior to the Claims Bar Date, being 4:00 p.m. (Vancouver time) on November 13, 2026. Failure to take the required actions before the Claims Bar Date may result in your claim being forever barred and extinguished

Post-Filing Claims Process Order	September 29, 2026
Post-Filing Claims Process Letter (Schedule C)	September 29, 2026
Filing Claims Process Form (Schedule D)	September 29, 2026
Notice of Revision or Disallowance (Schedule E)	September 29, 2026
Notice of Dispute of Revision or Disallowance (Schedule F)	September 29, 2026