Trilogy Metals Inc.

Trilogy and its future business, operations and financial condition are subject to various risks and uncertainties due to the nature of its business and the present stage of exploration of its mineral properties. Certain of these risks and uncertainties are under the heading “Risk Factors” under Trilogy’s Form 10-K for the fiscal year ended November 30, 2024 (“Form 10-K”) which is available on SEDAR+ at www.sedarplus.ca and EDGAR at www.sec.gov and on our website at www.trilogymetals.com.

With the exception of the addition of the below, there have been no material changes to the risk factors set forth in Trilogy’s Form 10-K.

Changes in U.S. laws and policies regulating international trade may adversely impact the Company.

The results of the recent election in the United States may result in legislative and regulatory changes that could have a material adverse effect on the Company and its financial condition. In particular, there is uncertainty regarding U.S. tariffs

and support for existing treaty and trade relationships, including with Canada. Although discussions continue between the United States and other countries, there remains significant uncertainty over whether tariffs or other restrictive trade measures or countermeasures will be implemented and, if so, the scope, impact and duration of any such measures. A trade war or new tariffs barriers may potentially lead to increases or decreases in revenues due to higher or lower metal prices, but the overall effect would depend on changes in demand, production strategies, and operational costs. Further, a trade war or new tariff barriers may potentially lead to increased costs and may result in uncertainty over mineral resources and reserve estimates in its technical reports. Additionally, due to worldwide economic uncertainty, the availability and cost of funds for development and other costs have become increasingly difficult, if not impossible, to project.