Northisle Provides Corporate and Exploration Update and 2026 Execution Plan

Vancouver, B.C. – Northisle Copper and Gold Inc. (TSX-V: NCX, OTCQX: NTCPF) (“Northisle” or the “Company”) is pleased to provide an update on its progress at the North Island Project during 2025 and to highlight the Company’s execution plan for 2026. Sam Lee, President & CEO commented “2025 was a transformational year for Northisle. We demonstrated the robust economic and strategic merits of the North Island Project and are now advancing the project in a disciplined and responsible manner. In parallel, we are pursuing what we believe to be a significant copper-gold opportunity across our 40-kilometre, 100%-owned porphyry district, supported by a systematic, district-wide exploration program designed to expand resource grade, project scale, and long-term optionality. We continue to build a leading technical and operational team, strengthening our ability to execute our high-growth, value-creation strategy. Our progress is underpinned by strong, respectful partnerships with First Nations and ongoing engagement with Municipal, Provincial, and Federal governments, supporting responsible development, environmental stewardship, and a clear permitting pathway in a stable, low-risk jurisdiction.