NorthWest Extends High-Grade Mineralization at Kwanika With 16.9 Metres of 1.37% Copper Equivalent in Second 2025 Drill Hole

Rhea-AI Summary

NorthWest (NWCCF) reported assay results from drill hole K-25-272 at Kwanika on Oct 15, 2025. The 456 m hole is part of a planned 5,135 m, 17-hole 2025 program and returned 16.9 m @ 1.37% CuEq from 385.3 m and 28.0 m @ 0.73% CuEq from 50.0 m.

The hole extends higher-grade mineralization 50 m down dip in the Central and Western zones, intersects multiple mineralized intervals consistent with the company’s high-grade Target Model, and supports a future updated mineral resource and PEA.

Positive

• 16.9 m grading 1.37% CuEq at 385.3 m
• 28.0 m grading 0.73% CuEq near surface (50.0 m)
• Higher-grade zones extended 50 m down dip in Central and Western zones

Negative

• True width for the 16.9 m @ 1.37% CuEq interval is reported as unknown
• Results are from a single hole in a larger program; resource update pending before economic impact is quantified

TORONTO, Oct. 15, 2025 (GLOBE NEWSWIRE) -- NorthWest Copper Corp. (“NorthWest” or the “Company”) (TSX-V: NWST) is pleased to announce assay results from the second hole of its 2025 diamond drilling program at Kwanika. The hole (K-25-272), totalling 456 metres of a planned 5,135 metre, 17-hole program, intersected multiple mineralized intervals, highlighted by 16.9 metres grading 1.37% copper equivalent¹ (“CuEq”). This result extends the higher-grade mineralization down dip by 50 metres, confirming continuity and demonstrating potential for further expansion at depth.

This hole and our first hole announced on October 6, 2025, which intersected 44 metres grading 3.18% CuEq, both provide additional confidence in the higher-grade target model (“Target Model”) announced on April 10, 2025. The Target Model is designed to focus exploration efforts on higher-grade zones over thicknesses better suited for a selective top-down conventional bulk underground mining approach.

K-25-272 Drill Hole Highlights Include:

Open Pit Zone: 28.0 metres of 0.58 % Cu, 0.16 g/t Au (0.73% CuEq) from 50.0 metres
Central Zone:   20.3 metres of 0.66 % Cu, 0.48 g/t Au (1.12% CuEq) from 332.3 metres and,
                16.9 metres of 0.55 % Cu, 0.88 g/t Au (1.37% CuEq) from 385.3 metres
Western Zone: 22.0 metres of 0.41% Cu, 0.72g/t Au (1.07% CuEq) from 442.0 metres

Results Summary:

• Intersected near surface mineralization with attractive grades of 0.73% CuEq over significant thickness of 28 metres, indicating strong potential for low-cost open pit mining;
• Intersected multiple zones of mineralization across the Central and Western zones consistent with Target Model expectations; and
• Extended both the Central and Western Zone by 50 metres down dip, expanding the size of the mineralized zones, and confirming that both zones are open for further expansion at depth in the area of the hole.
  

Paul Olmsted, CEO of NorthWest commented: “This second hole builds on the excellent results from our first hole, which returned 44 metres grading 3.18% CuEq. Together, these results continue to validate our high-grade Target Model at Kwanika. The combination of strong copper and gold grades and confirmation of down-dip extensions reinforce our vision for a high-quality project with improving economics relative to the 2023 PEA. With continued drilling success, we are well positioned to unlock significant value for shareholders as we advance toward an updated mineral resource and updated PEA.”

Geoff Chinn, VP Business Development and Exploration of NorthWest added: “Our second hole continues to perform exceptionally well against our high-grade Target Model, returning 16.9 metres grading 1.37% CuEq and confirming that the Central and Western Zones have been extended at depth and continue to remain open for further expansion in the area of the hole. These results deepen our understanding of the structural controls on the higher-grade mineralization and strengthen our confidence in the geological model to support future mineral resource updates. Importantly, the hole also highlights the presence of near-surface mineralization with an intersection of 28 metres grading 0.73% CuEq, which is well suited for inclusion in a future open pit mineral resource.”

Kwanika Deposit

Kwanika represents the flagship asset of NorthWest. The primary objective of the current Kwanika diamond drill program is to support an updated mineral resource estimate and guide a revised mine design based on both open pit and an underground bulk mining method.

Since the start of 2025, the Company has focused its strategy at Kwanika on defining and advancing higher-grade copper-gold zones consistent with our Target Model, with the potential to significantly enhance project economics beyond those outlined in the 2023 PEA².

The conceptual higher-grade Target Model divides the Kwanika Deposit into three interconnected zones: Pit Zone, Central Zone and Western Zone. These zones typically host two broad mineralized intervals separated by late dykes. Further details of these zones can be seen in the news release dated October 6, 2025.

Drill Results Discussion

Drill holes from the 2025 diamond drill program are designed to intersect both the east dipping Central Zone and the north dipping Western Zone beneath it, with the goal of validating, infilling, and expanding the understanding of higher-grade mineralization. Much of the historical drilling was completed at low angles to the dip of these mineralized structures, making it challenging to accurately define their geometry and true widths. The current drill program is specifically designed to address these limitations and has met this objective based on initial results.

Collar locations and continuous mineralized intercepts are summarized in Table 1 and Table 2 below. Planned hole locations for the planned 2025 program can be reviewed in the news release dated September 2, 2025.

Hole K-25-272 was drilled with HQ (63.5 mm) core and analyzed using sawn half core samples. The hole was drilled towards the southwest on a 239 azimuth, dipping -80 to a total depth of 456 metres. It was designed to validate the Target Model in an area poorly tested by previous low angle drilling – specifically targeting the interpreted intersection of the Central and Western Zones.

Drilling intersected lower grade zones near surface consistent with the Pit Zone returning attractive grades for surface mining, including:

• 0.58% Cu, 0.16g/t Au, and 1.73 g/t Ag for 0.73 % CuEq over 28.0 metres with an estimated true thickness of 26.3 metres starting at 50.0 m.
  

At greater depth, the hole intersected the area where the Central and Western Zones converge, cutting multiple mineralized intervals, including:

• 0.66 % Cu, 0.48 g/t Au, and 2.66 g/t Ag for 1.22 % CuEq over 20.3 metres with an estimated true width of 14.4 metres starting at 332.2 metres, consistent with the target model, and
• 0.55 % Cu, 0.88 g/t Au, and 3.63 g/t Ag for 1.37 % CuEq over 16.9 metres with an unknown true width starting at 385.3 metres, which represents a 50 metre down-dip extension of this zone and remains open for expansion.

The hole then intersected the Western Zone, returning:

• 0.41 % Cu, 0.72 g/t Au, and 2.00 g/t Ag for 1.07% CuEq over 22.0 metre with an estimated true width of 17.6 metres, which represents a 50 metre down-dip extension of this zone and remains open for expansion.
  

According to the conceptual Target Model, the first Central Zone intersection correlates to the Western Zone intercept, while the second Central Zone intercept likely corresponds to a parallel mineralized structure. The drill hole appears to have only partially intersected this parallel zone rather than fully transecting it, so its true with remains unknown.

In summary, Hole K-25-272 demonstrates attractive grade and widths of near surface copper-gold mineralization suitable for open pit mining methods. At depth, the hole enhances confidence in the Target Model, confirming the interpreted junction between the Central and Western Zones. It also extends higher-grade mineralization down-dip in both zones and confirms that these zones remain open for further expansion in the area of the hole.

Table 1: Drill Results From This News Release^{3 4}

Hole	From	To	Length	Zone	Cu	Au	Ag	CuEq	True Width	Description
	(m)	(m)	(m)		(%)	(g/t)	(g/t)	(%)	Est. (m)	Target Model Zone Reference
K-25-272	50.0	78.0	28.0	Pit	0.58	0.16	1.74	0.73	26.3	Lower-Grade Pit Zone 8
K-25-272	98.0	106.0	8.0	Pit	0.29	0.25	0.85	0.51	7.5	Lower-Grade Pit Zone 8
K-25-272	332.3	352.6	20.3	Central	0.66	0.48	2.66	1.12	14.4	Higher-Grade Gold Zone 4
K-25-272	385.3	402.2	16.9	Central	0.55	0.88	3.63	1.37	Unknown	Higher-Grade Gold Zone 6
K-25-272	422.0	444.0	22.0	Western	0.41	0.72	2.00	1.07	17.6	Higher-Grade Gold Zone 2

Table 2: Drill Collar Information⁵

Hole	Collar X	Collar Y	Collar Z	Collar Azimuth	Collar Dip	Final Length
K-25-272	351622	6156243	974	240	-80	456
K-25-269	351472	6156219	985	0	-90	501	Corrected

Quality Assurance / Quality Control

Drilling at Kwanika in 2025 was designed and supervised by NorthWest, implemented by InData Geoscience with assay QA/QC checks by ExploreGeosolutions. Samples were collected, tracked and an external QA/QC program was implemented using blanks and standards to monitor analytical accuracy and precision. The samples were sealed on site and shipped to Activation Laboratories Ltd. (“Actlabs”) in Kamloops BC. The laboratory’s internal quality control system complies with global certifications for quality ISO 17025. Drill core samples were analyzed using a combination of Actlabs multi-element 1F2 analysis for low level concentrations (4-Acid Digestion, ICP-OES) and the 8-4 Acid ICP-OES analysis for higher level concentrations (4-Acid Digestion, ICP-OES with automatic over limits for base metals and silver). Gold, platinum and palladium assaying was completed with 1C-OES method, using a 30-gram fire assay with ICP finish analysis. In addition, about 5% of the sample pulps are re-assayed at a secondary laboratory to confirm reproducibility and check for bias.

Technical aspects of this news release have been reviewed, verified, and approved by Geoff Chinn, P.Geo., VP Business Development and Exploration for NorthWest, who is a qualified person as defined by National Instrument 43-101 – Standards of Disclosure for Minerals Projects.

About NorthWest:

NorthWest is a copper-gold exploration and development company with a pipeline of advanced and early-stage projects in British Columbia, including Kwanika-Stardust, Lorraine-Top Cat and East Niv. With a robust portfolio in a tier one jurisdiction, NorthWest is well positioned to participate fully in strengthening global copper and gold markets. We are committed to responsible mineral exploration which involves working collaboratively with First Nations to ensure future development incorporates stewardship best practices and traditional land use. Additional information can be found on the Company’s website at www.northwestcopper.ca.

On Behalf of NorthWest
“Paul Olmsted”
CEO, NorthWest Copper

For further information, please contact: 
416-457-3333
info@northwestcopper.ca  

Neither the TSXV 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 release.

Cautionary Statement Regarding Forward-Looking Information 

This news release contains “forward-looking information” within the meaning of applicable securities laws. All statements, other than statements of historical fact, are forward-looking statements and are based on expectations, estimates and projections as at the date of this news release. Any statement that involves discussion with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions, future events or performance (often, but not always using phrases such as “plans”, “expects”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates”, or “believes” or variations (including negative variations) of such words and phrases, or state that certain actions, events or results “may”, “could”, “would”, “might” or “will” be taken, occur or be achieved) are not statements of historical fact and may be forward-looking statements. In this news release, forward-looking statements relate, among other things, to statements with respect to; plans and intentions of the Company; proposed exploration and development of NorthWest’s exploration property interests; the Company’s ability to finance future operations; mine plans; magnitude or quality of mineral deposits; the development, operational and economic results of current and future potential economic studies; adding the Lorraine resource to the Kwanika-Stardust Project; the Company’s goals for 2025; geological interpretations; the estimation of Mineral Resources; anticipated advancement of mineral properties or programs; future exploration prospects; the completion and timing of technical reports; future growth potential of NorthWest; and future development plans.

All statements, other than statements of historical fact, included herein, constitutes forward-looking information. Although NorthWest believes that the expectations reflected in such forward-looking information and/or information are reasonable, undue reliance should not be placed on forward-looking information since NorthWest can give no assurance that such expectations will prove to be correct. Forward-looking information involves known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those anticipated in such forward-looking information, including the risks, uncertainties and other factors identified in NorthWest’s periodic filings with Canadian securities regulators. Forward-looking information are subject to business and economic risks and uncertainties and other factors that could cause actual results of operations to differ materially from those contained in the forward-looking information. Important factors that could cause actual results to differ materially from NorthWest’s expectations include risks associated with the business of NorthWest; risks related to reliance on technical information provided by NorthWest; risks related to exploration and potential development of the Company’s mineral properties; business and economic conditions in the mining industry generally; fluctuations in commodity prices and currency exchange rates; uncertainties relating to interpretation of drill results and the geology, continuity and grade of mineral deposits; the need for cooperation of government agencies and First Nation groups in the exploration and development of properties and the issuance of required permits; the need to obtain additional financing to develop properties and uncertainty as to the availability and terms of future financing; the possibility of delay in exploration or development programs and uncertainty of meeting anticipated program milestones; uncertainty as to timely availability of permits and other governmental approvals; and other risk factors as detailed from time to time and additional risks identified in NorthWest’s filings with Canadian securities regulators on SEDAR+ in Canada (available at www.sedarplus.com). 

Forward-looking information is based on estimates and opinions of management at the date the information is made. NorthWest does not undertake any obligation to update forward-looking information except as required by applicable securities laws. Investors should not place undue reliance on forward-looking information.

^{1 CuEq assumes consensus metal prices of $2646/oz gold, $4.34/lbs copper, $29.73/oz silver calculated as follows [Cu+100*((Au/31.1035*Au Price)/(Cu Price*2204.62)+(Ag/31.1035*Ag Price)/(Cu Price*2204.62))]
2 See NI 43-101 technical report titled “Kwanika-Stardust Project NI 43-101 Technical Report on Preliminary Economic Assessment” dated February 17, 2023, with an effective date of January 4, 2023, filed under the Company’s SEDAR+ profile at www.sedarplus.com.
3 Estimated true widths based on collar azimuth and dip and the average dip of the mineralized zone
4 CuEq assumes consensus metal prices of $2646/oz gold, $4.34/lbs copper, $29.73/oz silver calculated as follows [Cu+100*((Au/31.1035*Au Price)/(Cu Price*2204.62)+(Ag/31.1035*Ag Price)/(Cu Price*2204.62))]
5 Collar coordinates reference UTM Zone 10N NAD83. The collar coordinates for hole K-25-269 were corrected from the press release dated Oct. 6, 2025 and the correct collar coordinates has been included in this press release.}

FAQ

What did NorthWest (NWCCF) report from drill hole K-25-272 on Oct 15, 2025?

Hole K-25-272 (456 m) returned 16.9 m @ 1.37% CuEq from 385.3 m and 28.0 m @ 0.73% CuEq from 50.0 m, extending zones 50 m down dip.

How does the K-25-272 result affect the Kwanika Target Model for NWCCF?

The intercepts confirm continuity of the high-grade Target Model, intersecting Central and Western zones as interpreted and supporting further infill and extension drilling.

Will the K-25-272 assays change NorthWest (NWCCF) mineral resources immediately?

No; the company says results support an updated mineral resource and revised PEA, but a formal resource update is still pending.

What drilling program is K-25-272 part of for NorthWest (NWCCF)?

K-25-272 is part of a planned 5,135 m, 17-hole 2025 diamond drill program at Kwanika.

Are the K-25-272 intercept true widths reported by NorthWest (NWCCF)?

Some true widths are estimated (e.g., 28.0 m interval est. true thickness 26.3 m); the 16.9 m @ 1.37% CuEq interval is reported with an unknown true width.

Do K-25-272 results indicate potential for open pit mining at Kwanika (NWCCF)?

The company highlights the 28.0 m @ 0.73% CuEq near-surface interval as suitable for inclusion in a future open pit mineral resource.