Trilogy Metals Announces Acceptance of Alaska's High-Grade Arctic Copper-Zinc-Lead-Gold-Silver Project into the FAST-41 Federal Permitting Program

VANCOUVER, BC, May 15, 2026 /PRNewswire/ - Trilogy Metals Inc. (NYSE American: TMQ) (TSX: TMQ) ("Trilogy Metals", "Trilogy" or the "Company") announced today that its flagship Arctic Project in northwestern Alaska's Ambler Mining District, being advanced by Ambler Metals LLC ("Ambler Metals") – its 50/50 joint venture with South32 Limited (ASX, LSE, JSE: S32; ADR: SOUHY) ("South32") – has been officially accepted as a "Covered Project" on the Federal Permitting Improvement Steering Council's (the "Permitting Council") Federal Permitting Dashboard at permits.performance.gov under Title 41 of the Fixing America's Surface Transportation Act ("FAST-41"). The designation marks a pivotal milestone as Ambler Metals advances toward the start of the National Environmental Policy Act process, and positions the Arctic Project as a priority domestic critical mineral development under President Trump's resource policy agenda.