Northisle Announces Continued Growth of West Goodspeed Target to over 1.2km Strike with Additional High-Grade Intervals

Vancouver, B.C. – Northisle Copper and Gold Inc. (TSX-V: NCX, OTCQX: NTCPF) (“Northisle” or the “Company”) is pleased to announce additional drill results from its 2025 exploration campaign. Ten additional holes were drilled with the objective of expanding the West Goodspeed target. Results have further expanded the footprint of mineralization at West Goodspeed and provide additional confidence in the interpretation of the mineralized systems in the area while highlighting additional opportunities for future expansion. Drilling at the North Island Project continues to progress, focused on the infill and geotechnical assessment of the Northwest Expo and Red Dog deposits. Sam Lee, President and CEO stated “Today’s results from West Goodspeed have further expanded the footprint of mineralization at the West Goodspeed target. Work has now commenced to bring West Goodspeed into the mineral inventory on the project, which will support our planned pre-feasibility study. Our exploration team is now focused on executing a comprehensive in-fill drilling program while advancing the exploration thesis for the overall property.”