Trilogy Metals Announces Commencement of Permitting for High-Grade Arctic Copper-Zinc-Lead-Gold-Silver Project in Alaska

Fully Funded Exploration and Development Field Program by Ambler Metals Anticipated to Commence in May Independent Economic Impact Study Highlights Arctic's Substantial Benefits to Alaska and the Northwest Arctic Region All amounts are in United States dollars unless otherwise stated. VANCOUVER, BC, April 21, 2026 /PRNewswire/ - Trilogy Metals Inc. (NYSE American: TMQ) (TSX: TMQ) ("Trilogy Metals", "Trilogy" or the "Company") announced today that Ambler Metals LLC ("Ambler Metals"), its 50/50 joint venture with South32 Limited ("South32"), has commenced the permitting process for the Arctic Project (the "Arctic Project" or "Arctic"), part of the Upper Kobuk Mineral Projects ("UKMP") in northwestern Alaska's Ambler Mining District.