Vancouver, B.C. – Northisle Copper and Gold Inc. (TSX-V: NCX) (“Northisle” or the “Company”) is pleased to announce the positive results from a Preliminary Economic Assessment (the “2025 PEA”) for its 100% owned North Island Project (the “Project”) that demonstrate excellent economics from the staged development of the Project.
The 2025 PEA is based on a two-phase development of the Company’s 100% owned Northwest Expo and Red Dog deposits, followed by the Hushamu deposit concurrent with a plant expansion. The 2025 PEA considers the processing of 753 million tonnes of mineable material within three open pit deposits over a 29-year mine life. During the first phase, throughput is approximately 40,000tpd resulting in an initial capital expenditure of approximately $1.1 billion (US$849 million). Production includes a combination of gold doré and gold-rich copper concentrate. The second phase contemplates twinning the mill for a total of 80,000tpd in year 6 to produce copper concentrate (containing significant payable gold), additional gold doré, and a molybdenum concentrate (containing payable rhenium). Phase 1 delivers a short payback period of 1.9 years and strong operating cash flows (net of sustaining capital) of approximately $400 million per year that provide a strong return and fully fund Phase 2 construction starting in year 5 (see Figure 4).

Dear Shareholders,
As we enter the new year, I would like to start off by reflecting on our significant accomplishments in 2024. We made substantial progress across our flagship North Island Project that has set the foundation for a transformational 2025.
2024 was a year of pivotal achievements. Highlights include:
• Resource Growth: Our integrated North Island Project resource estimate demonstrated a 60% growth in global Indicated tonnage to 906 million tonnes containing 3.1 billion lbs Cu, 6.9 million ozs Au, 149 million lbs Mo and 847,000 lbs Re. This represents a 27% increase in contained Au, 69% increase in contained Mo and 132% increase in contained Re in the Indicated category. Additional Inferred resource estimate of 214 million tonnes containing 571 million lbs Cu, 1.5 million ozs Au, 24 million lbs Mo and 147,000 lbs Re. This makes our North Island Project one of the largest copper and gold porphyries in Canada not currently owned by a major.

Vancouver, B.C. – Northisle Copper and Gold Inc. (TSX-V: NCX) (“Northisle” or the “Company”) is pleased to announce that the final assays from the Company’s 2024 drill program at Northwest Expo and West Goodspeed have now been released.

Robin Tolbert, Vice President Exploration stated “We are encouraged by the 2024 results from Northwest Expo, which have added continuity to the block model grades and resource estimate. Additional holes have provided vectoring information from the lithocap hosted mineralization towards a potential porphyry source, as well as potential extension of the main lithocap hosted resource. Drilling at West Goodspeed continues to be encouraging and has highlighted additional untested areas with the potential to expand this zone along strike and to the north and south. Further refinements to the Northwest Expo and West Goodspeed exploration models will aid in testing these new targets and resource estimation in 2025.”