Northisle Provides Update on Largest Ever Field Program at North Island

Vancouver, B.C. – Northisle Copper and Gold Inc. (TSX-V: NCX) (“Northisle” or the “Company”) is pleased to provide an update on its fall 2025 field program at the North Island Project. The program includes a comprehensive drilling, field exploration, environmental data collection and geotech site investigation program which will support the completion of a pre-feasibility study on the North Island Project by the end of 2026. The field exploration program will also advance the property-wide exploration thesis. The company has added more than 20,000 metres to the 2025 drilling program compared to the initial plans for the North Island Project, for a total target of 27,000 metres during 2025. Sam Lee, President & CEO stated “Upon completion of our financing in August, our team has been hard at work to execute against our vision of unlocking the potential of our 35 km porphyry district as quickly as possible, starting with the North Island Project. We have now completed significant site upgrades, expanded our site team, and have commenced extensive field programs and project planning in support of that goal. We are continuing to work in earnest with our First Nations, Provincial, and Federal Governments to ensure the swift realization of this generational opportunity for all rights holders and stakeholders.”