X0508 4 2025-10-08 0001543418 Trilogy Metals Inc. TMQ 0001726131 Hensley William L. Iggiagruk C/O TRILOGY METALS INC. SUITE 901, 510 BURRARD STREET VANCOUVER A1 V6C 3A8 BRITISH COLUMBIA, CANADA true false Common Shares 2025-10-08 4 M 0 100000 1.81 A 143638 D Common Shares 2025-10-08 4 S 0 100000 6.39 D 43638 D Director Stock Option (Right to Buy) 1.81 2025-10-08 4 M 0 100000 0 D 2020-12-10 2025-12-09 Common Shares 100000 0 D Converted from Canadian exercise price of C$2.52 using an exchange rate of C$1.3952 = US$1.00. Average weighted price of C$8.921578 converted to U.S. dollars using an exchange rate of C$1.3952 = US$1.00. The sale price reported above is a weighted average price. These shares were sold in multiple transactions at prices ranging from C$8.887 to C$9.0213, inclusive. The reporting person undertakes to provide to Trilogy Metals Inc., any security holder of Trilogy Metals Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote. /s/ Elaine Sanders as attorney-in-fact for William I. Iggiagruk Hensley 2025-10-10