Mr. Nicholas Van Dyk reports

NORTHISLE ANNOUNCES APPOINTMENT OF KEVIN O'KANE AS EXECUTIVE VICE PRESIDENT AND CHIEF OPERATING OFFICER

NorthIsle Copper and Gold Inc. has appointed Kevin O'Kane as executive vice-president and chief operating officer, in addition to continuing as a non-independent director of the company. In addition, Nicholas Van Dyk has been appointed executive vice-president of the company and will continue as chief financial officer and corporate secretary. Robin Tolbert, chief geoscientist, will be retiring effective Sept. 13, 2025, and will continue as an adviser to the company.

Sam Lee, president and chief executive officer of NorthIsle, commented: "I am very pleased to be announcing Kevin O'Kane's appointment as our chief operating officer. His decades of operating leadership will bring the operational rigour and integrated mindset that will ensure we execute on our growth plans successfully. Kevin will continue to provide leadership of our technical and sustainability committee at the board level and we are excited to have him take a direct role in ensuring we hit our milestones. In addition, I am pleased to recognize the significant contribution that our CFO, Nicholas Van Dyk, has made to the success of the company. He will work closely with Kevin to lead our next phase of growth. I also want to express my gratitude to Robin for his strong leadership of our exploration over the last four years and wish him the best in his well-earned retirement."

Mr. O'Kane has more than 40 years of business and operating leadership in the mining industry, including 37 years at BHP Billiton developing, expanding and operating some of the most significant copper mines in the world, including Spence, Cerro Colorado and Minera Escondida. From 2018 to 2020, Mr. O'Kane served as the executive vice-president and chief operating officer of SSR Mining Inc. prior to its combination with Alacer Gold. Mr. O'Kane has extensive experience in operations, permitting and sustainability and led SSR Mining to record production at all three of its producing mines. During his tenure at BHP, he held the position of vice-president, health, safety, environment and community for the copper business. Mr. O'Kane started his career at the Island copper mine, located adjacent to NorthIsle's North Island project, where he progressed to the role of chief mining engineer. Mr. O'Kane has been serving on several company boards since 2020, in addition to NorthIsle, including Iamgold Corp., Autlan and Intellisense.io. He intends to rationalize and reduce this work as required to focus on NorthIsle.

Mr. O'Kane commented: "I am very excited to take on this expanded role with NorthIsle and lead the advancement of the North Island project through the next phase of its growth. I started my career at the Island copper mine, adjacent to our project, and have maintained my connection to northern Vancouver Island. I look forward to working closely with the North Island first nations, communities and governments to build a project we can all be proud of."

Mr. O'Kane will remain on the company's board until such time as the company identifies a replacement but has stepped down from the company's corporate governance, compensation and nominating (CGCN) committee as he no longer qualifies as an independent director. Alex Davidson has been appointed to the CGCN committee in his place.

About NorthIsle Copper and Gold Inc.

NorthIsle is a Vancouver-based company whose mission is to become a leading and sustainable mineral resource company for the future. NorthIsle owns the North Island project, which is one of the most promising copper and gold porphyry deposits in Canada. The North Island project is located near Port Hardy, B.C., on a more-than-34,000-hectare block of mineral titles 100 per cent owned by NorthIsle stretching 50 kilometres northwest from the now-closed Island copper mine operated by BHP Billiton. NorthIsle recently completed an updated preliminary economic assessment for the North Island project and is now fully financed through completion of a prefeasibility study while continuing exploration within this highly prospective land package.

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