Northisle Provides Update on Largest Ever Field Program at North Island
Northisle Copper and Gold Inc. | 14th Floor – 1040 West Georgia St. | Vancouver, BC | V6E 4H1
www.northisle.ca | [email protected]
October 6, 2025
TSX Venture Exchange Symbol: NCX
Northisle Provides Update on Largest Ever Field Program at North Island
Highlights:
• 2025 drilling will nearly quadruple from original plan and has been progressing rapidly
o Original Phase IV program expanded from 7,000m to over 27,000m for 2025
o 11,915 metres now complete, including approx. 8,000 metres of exploration drilling
o Total of up to 15,000 metres of infill, geotech and condemnation drilling remaining in 2025
o Targeting up to four drill rigs by end of 2025
o Exploration office footprint and staff more than doubled to support execution
• Final Phase IV exploration results at West Goodspeed and NW Expo being assayed and released shortly
• Comprehensive baseline studies on the North Island Project initiated in early Q4 2025
• Field engineering commenced including geotechnical drilling and site investigation as well as PFS-level
metallurgical testing targeted to commence in late Q4 2025
• District scale exploration planning underway and expected to be released by early Q1 2026
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 Gove rnments to ensure th e swift realization of this
generational opportunity for all rights holders and stakeholders.”
Exploration and Development Milestones
Key project milestones include the following:
• COMPLETED - Updated Preliminary Economic Assessment on North Island Project
• COMPLETED - 2025 Exploration Program Commenced
• COMPLETED - Initial results from drilling program at West Goodspeed
• COMPLETED - C$39.5 million financing
• COMPLETED - Commencement of Phase V exploration program
• COMPLETED – BC Hydro Conceptual Review of Interconnection
• COMPLETED - COO hired and additional team enhancements to support growth
• COMPLETED - Commencement of expanded baseline study program to support EA Readiness
• Q4 2025 – Final results from Phase IV drill program from West Goodspeed and NW Expo
• Q4 2025 - Commence PFS-level metallurgical testing program
• Q4 2025 – Completion of development of belt-wide plan for the North Island Project
Northisle Copper and Gold Inc. | 14th Floor – 1040 West Georgia St. | Vancouver, BC | V6E 4H1
www.northisle.ca | [email protected]
• Q4 2025 – Initiate BC Hydro System Impact Study
• Q4 2025 – Complete field portion of Geotech site investigation
• Q4 2025 – Award major engineering scopes for pre-feasibility study
• Q2 2026 – Completion of metallurgical testing
• Q2 2026 – Integrated resource update for the North Island Project
• Q4 2026 – Target completion of pre-feasibility study on the North Island Project
• Ongoing - Continued positive engagement with indigenous rightsholders and local stakeholders
• Ongoing - Additional team additions to support further growth
Upcoming Investor Events
During 2025, the Company will continue to be active in investor outreach. Northisle will be attending several
external investor events including the following events:
• October 6-10, 2025: Gentile European Mining Tour, London, Paris, Zurich, Geneva, Frankfurt
• November 19 – 21, 2025: Swiss Mining Institute, Zurich, Switzerland
• January 25 – 26, 2026: Vancouver Resource Investment Conference, Vancouver, Canada
• January 26 – 29, 2026: AME Roundup, Vancouver, Canada
• January 27 – 20, 2026: TD Securities Mining Conference, Toronto, Canada
Drilling Program Update
As of September 30, 2025, the Company has completed 11,915 metres of drilling across 35 holes. At the West
Goodspeed target and its northwestern extension toward the Red Dog area, 21 holes were completed, with results
from 10 holes released in July 1 and September2. At the Cougar target, located approximately one kilometre east of
the Northwest Expo open pit design footprint, three holes were completed and are pending assay results. In
addition, two exploration holes, one at Northwest Expo and another at Goodspeed, were drilled to test extensions
of nearby mineralized zones. A further nine infill holes were started at the Northwest Expo and Red Dog deposits to
upgrade Inferred resources to the Indicated category as part of the ongoing pre-feasibility study (Figures 1 and 2).
At West Goodspeed, the 2025 drilling program was designed to confirm and expand upon the mineralization outlined
in 2023 and 2024. Early results from the 2025 campaign, including thick and economically significant intervals
intersected in holes GS25-17, GS25-18, and GS25-23, indicated continuity of mineralization and supported a focus
on the northwestern portion of the target, where potential extensions toward t he Red Dog area were evaluated.
(Figure 2). The northwest -trending extension was guided by struct ural observations from drill core and by the
progressive thickening of mineralized intervals observed from southeast to northwest. The Company will outline the
geometry and extent of the mineralized zone once the remaining assay results from the drilled ho les are received.
For additional context on the geological interpretations from the West Goodspeed area, readers are referred to the
Company’s July and September 2025 drill result news releases, which provide detailed discussions based on the
reported assay results.
At the Cougar target, located approximately one kilometre east of the Northwest Expo open pit design footprint,
drilling was guided by a prominent magnetic anomaly coincident with an area of previously observed hydrothermal
alteration and mineralization3. The objective of the program was to evaluate a potential connection between Cougar
1 https://northisle.ca/news/northisle-announces-near-surface-intercepts-and-higher-grade-intercepts-at-depth-at-west-
goodspeed-on-its-north-island-project/
2 https://northisle.ca/news/northisle-reports-additional-results-from-2025-drilling-at-west-goodspeed-at-its-north-island-
project/
3 https://www.northisle.ca/news/northisle-commences-2025-drilling-and-field-program/
Northisle Copper and Gold Inc. | 14th Floor – 1040 West Georgia St. | Vancouver, BC | V6E 4H1
www.northisle.ca | [email protected]
and the Northwest Expo mineralized system. Visual observations from the three completed holes confirmed the
presence of copper sulfides and alteration assemblages consistent with those observed elsewhere along the
mineralized belt, including Northwest Expo. The Company will provide a detail ed interpretation of this target upon
receipt of assay results from the three holes.
At Northwest Expo, one step -out hole was drilled outside the open pit design footprint, approximately 250 metres
east of the main mineralized system, to test a magnetic anomaly interpreted as a potential extension of the deposit.
The hole intersected zones of alteration and sulfide mineralization, and assay results are pending. In the Goodspeed
area, one exploration hole tested a magnetic anomaly located near an area of outcropping copper mineralization;
however, the hole did not return any significant mineralized intervals (Figure 2).
In preparation for the upcoming pre-feasibility study , drilling commenced at Red Dog, where 4 infill holes were
completed with the objective of upgrading Inferred resources to the Indicated category. At Northwest Expo, 5 infill
holes have been drilled to date for the same purpose. This drilling program is ongoing and forms a key part of the
Company’s resource conversion strategy. All infill holes are pending assay results.
Figure 1. North Island Property Showing Deposits and Targets
Northisle Copper and Gold Inc. | 14th Floor – 1040 West Georgia St. | Vancouver, BC | V6E 4H1
www.northisle.ca | [email protected]
Figure 2. Red Dog and West Goodspeed Areas with Drilling Executed in 2025
Regional Exploration Program
Stream Sediment Program – Phase I Results
The first phase of the district-wide stream sediment sampling program has been completed, with a total of 79 heavy
mineral concentrate samples, 74 silt samples , and 9 moss mat samples collected. Results are currently being
integrated into the Company’s generative exploration models to refine target definition across the 50 -km porphyry
belt. Early indications confirm the effectiveness of this multi-media approach for detecting geochemical footprints
of porphyry systems nearby.
Importantly, the results show strong consistency with expectations, highlighting high copper concentrations in
proximity to the main deposits and known targets, while also pointing to new prospective areas to the east of the
property. A second-phase stream sediment program is scheduled to begin in the coming weeks, focusing on tracing
the sources of the strongest anomalies identified in Phase I beyond the established deposits and prospects (Figure
3).
Northisle Copper and Gold Inc. | 14th Floor – 1040 West Georgia St. | Vancouver, BC | V6E 4H1
www.northisle.ca | [email protected]
Figure 3. Stream Sediments Results – Phase 1 (heavy mineral concentrates, silt and moss mat samples)
District-Scale 3D Geological Modeling
Significant progress has been made in the ongoing 3D modeling of the North Island porphyry belt. In collaboration
with Mira Geoscience Ltd., an initial model of the Jurassic plutons has been constructed with the objective of
delineating the spatial distrib ution of intrusive bodies associated with porphyry centers. This work forms the
foundation of a belt -scale geoscientific framework to support future exploration targeting and regional discovery
efforts.
The next step will focus on finalizing the structural interpretation, integrating regional mapping with both regional
and local airborne magnetic surveys. This integration will refine the model by incorporating the most significant
geological units at the belt scale, further strengthening its application for exploration and targeting.
Northisle Copper and Gold Inc. | 14th Floor – 1040 West Georgia St. | Vancouver, BC | V6E 4H1
www.northisle.ca | [email protected]
Figure 4. 3D Model of the Jurassic Intrusions based on Geological and Geophysical Surveys
Environmental Baseline and Geotechnical Site Investigation Program Details
Northisle has contracted leading environmental consultants to carry out a multi-faceted, multi-year environmental
baseline study at the Project, which builds on the environmental, socio-economic and archeological data Northisle
has been collecting since 2021.
The first phase of baseline studies will be primarily led by Falkirk Environmental Consultants , SLR Consulting
Limited, and Lorax Environmental Services. The 2025 environmental baseline program includes aquatics, terrestrial,
hydrogeological, and geochemical data collection.
Environmental baseline studies include a comprehensive assessment of the environmental conditions in a specific
area prior to the construction of a proposed project. They are designed to document the existing environmental
conditions of the area, including air, water, soil, and biotic resources, and serve to establish a baseline that can be
used to assess the potential impact of a proposed project. Environmental baseline studies are an essential part of
the mine permitting processes and help to ensure that mining companies operate in a conscientious and
sustainable manner.
Geotechnical studies have also been initiated in the area of the key project infrastructure, including field mapping,
surface geophysics, test pits, diamond and sonic drilling and is planned for completion by the end of 2025.
Northisle Copper and Gold Inc. | 14th Floor – 1040 West Georgia St. | Vancouver, BC | V6E 4H1
www.northisle.ca | [email protected]
Additional Technical Details
Qualified Persons and Data Verification
Dr. Pablo Mejia Herrera , P.Geo., Vice President Exploration of Northisle , and a Qualified Person as defined by
National Instrument 43-101 Standards of Disclosure for Mineral Projects, has reviewed and approved the scientific
and technical disclosure contained in this news release.
About Northisle
Northisle Copper and Gold Inc. is a Vancouver -based company whose mission is to become Canada’s leading
sustainable mineral resource company for the future. Northisle, through its 100% owned subsidiary North Island
Mining Corp., owns the North Island Project, which is one of the most promising copper and gold porphyry projects
in Canada. The North Island Project is located near Port Hardy, British Columbia on a more than 34,000 -hectare
block of mineral titles 100% owned by Northisle on a belt stretching 50 kilometres northwest from the now closed
Island Copper Mine operated by BHP Billiton. Since 2021, the Company has discovered two significant deposits,
expanded resources, demonstrated the economic potential of the project, and is now focused on the development
of this compelling project while exploring within this highly prospective land package.
For more information on Northisle please visit the Company’s website at www.northisle.ca.
On behalf of Northisle Copper and Gold Inc.
Nicholas Van Dyk, CFA
Chief Financial Officer
Tel: (604) 335-3590
Email: [email protected]
www.northisle.ca
Cautionary Note Regarding Adjacent and Historical Property Disclosure
This news release contains information regarding adjacent and historical properties and deposits. Investors are
cautioned that adjacent mineral deposits or systems, or past performance of historical mines, do not necessarily
indicate and certainly do not prove the existence, nature or extent of mineral deposits on the North Island Project.
Cautionary Statements regarding Forward-Looking Information
Certain information in this news release constitutes forward -looking statements under applicable securities law.
Any statements that are contained in this news release that are not statements of historical fact may be deemed to
be forward-looking statements. Forward-looking statements are often identified by terms such as “may”, “should”,
“anticipate”, “expect”, “intend” and similar expressions. Forward-looking statements in this news release include,
but are not limited to : plans and expectations regarding the 2025 exploration program; plans and expectations
regarding future project development; timing of key catalysts; planned activities, including further drilling, at the
North Island Project; the Company’s anticipated exploration activities; and the Comp any’s plans for advancement
of the North Island Project. Forward -looking statements necessarily involve known and unknown risks, including,
without limitation, the Company ’s ability to implement its business strategies; risks associated with mineral
exploration and production; risks associated with general economic conditions; adverse industry events;
stakeholder engagement; marketing and transportation costs; loss of markets; volatility of commodity prices;
inability to access sufficient capital from internal and external sources, and/or inability to access sufficient capital
on favourable terms; industry and government regulation; changes in legislation, income tax and regulatory matters;
Northisle Copper and Gold Inc. | 14th Floor – 1040 West Georgia St. | Vancouver, BC | V6E 4H1
www.northisle.ca | [email protected]
competition; currency and interest rate fluctuations; and other risks. Readers are cautioned that the foregoing list is
not exhaustive.
Readers are further cautioned not to place undue reliance on forward -looking statements as there can be no
assurance that the plans, intentions, or expectations upon which they are placed will occur. Such information,
although considered reasonable by mana gement at the time of preparation, may prove to be incorrect and actual
results may differ materially from those anticipated. Forward-looking statements contained in this news release are
expressly qualified by this cautionary statement.
The forward -looking statements contained in this news release represent the expectations of management of
Northisle as of the date of this news release, and, accordingly, are subject to change after such date. Northisle does
not undertake any obligation to update or revise any forward -looking statements, whether as a result of new
information, future events or otherwise, except as expressly required by applicable securities law.
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the
TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.