NorthWest Reports Results From Three Holes at Its Kwanika Property Highlighted by Near Surface Intercept of 58 Metres of 0.96% Copper and 1.04 G/T Gold (1.92% CuEq) From 94 Metres TORONTO, Dec. 10, 2025 (GLOBE NEWSWIRE) -- NorthWest Copper Corp. (“NorthWest” or the “Company”) (TSX-V: NWST) is pleased to report additional positive drill results from three holes completed as part of its 2025 program at the Company’s 100% owned Kwanika project in British Columbia. All three holes delivered strong results, intersecting near-surface mineralization highlighted by an intercept in hole K-25-275 of 58 metres grading 0.96% Cu, 1.04 g/t Au (1.92% copper equivalent 1 , “CuEq”). The results from the three holes exceeded expectations within the Pit Zones, expanding on the quality and continuity of higher-grade near-surface mineralization. Importantly, hole K-25-284 extended Pit Zone 10 along strike and down-dip, where mineralization remains open for future growth. All holes returned significant intervals with higher grades at shallow depths, reinforcing the Company’s view that a high-grade starter pit can provide a strong economic base in a future preliminary economic assessment (“PEA”). The three drill holes achieved a number of key objectives including: K-25-275 intersected the higher-grade gold dominate Pit Zone 10 and returned a significantly wider intercept than expected, K-25-277 extended Pit Zone 10 up-dip and confirmed its orientation and continuity, K-25-284 extended Pit Zone 10 by 40 metres along strike and down-dip, where it remains open, Confirmed the presence of multiple near-surface, high-grade zones of mineralization within the current open pit mineral resource. Collectively, these results highlight the potential to define and expand the higher-grade domains within the Pit Zone area and continue to support the Company’s strategy of prioritizing higher-grade areas within the existing mineral resource to enhance economics of a new PEA. Paul Olmsted, CEO of NorthWest stated: “Defining higher-grade zones continues to progress exceptionally well and combined with upcoming metallurgical results, is expected to support a higher-quality mineral resource estimate. Results of the first ten holes provides strong validation of our 2025 drill program and its objective of improving our understanding of the higher-grade mineralization within the Central and Pit Zones. These results continue to highlight a clear opportunity to improve project grades by prioritizing higher-grade domains within the existing mineral resource. Together, this work has the potential to underpin a more capital-efficient and economically robust open pit and underground development plan in an updated PEA, improving on the 2023 PEA 2 .” Drill Hole Highlights: K-25-275 Pit Zone 5: 50.5 metres of 0.21% Cu, 0.92g/t Au (1.04% CuEq) from 29.5 metres Including: 10.0 metres of 0.34% Cu, 0.2.07g/t Au (2.20% CuEq) from 54 metres Pit Zone 10: 58.0 metres of 0.96% Cu, 1.04g/t Au (1.92% CuEq) from 94 metres K-25-277 Pit Zone 5: 40.5 metres of 0.27% Cu, 1.02g/t Au (1.19% CuEq) from 33 metres Pit Zone 10: 9.3 metres of 0.61% Cu, 1.17g/t Au (1.67% CuEq) from 90.7 metres K-25-284 Pit Zone 5: 70 metres of 0.72% Cu, 0.95g/t Au (1.58% CuEq) from 52 metres Pit Zone 10: 18 metres of 0.62% Cu, 0.52g/t Au (1.11% CuEq) from 144 metres Geoff Chinn, VP Business Development and Exploration added: “These three holes highlight the pit area, where results have successfully helped define and expand three discrete, structurally controlled higher-grade zones at shallow depths. Defining these zones within the Pit Zone represents a meaningful shift from past modelling practises and should enhance the quality of future mineral resource estimates and any related mine plans. While the stockwork breccia was previously recognized, a higher-grade copper zone to the south and a higher-grade gold zone to the north were not. We are especially pleased with the definition and expansion of Pit Zone 10 and the exploration vectors it provides. Metal zonation also appears similar to what we see at the Central Zone, where high copper-to-gold values transition laterally to high gold-to-copper values across multiple zones. I am increasingly confident we are tracking towards meeting our target guidance as we work towards delivering an updated resource.” Kwanika Exploration Program On April 10, 2025, NorthWest announced a refined model for its flagship Kwanika project (“Target Model”), highlighting three key higher-grade zones: the Pit, Central and Western Zones. These zones target grades of 1.5% to 2.5% CuEq over combined true thicknesses of 30 to 45 metres, to be assessed against a more selective top-down bulk underground mining method. The 2025 exploration program is designed to confirm, define and expand on the Company’s understanding of higher-grade copper-gold mineralization within the near surface and underground portions of the current mineral resources. The objective of the program is to impro