Maxus Mining Identifies Multiple Zones of High-Grade Mineralization from 2025 Surface Program at Alturas East2025 Sampling Confirms Widespread High-Grade Polymetallic Mineralization Across Alturas East VANCOUVER, British Columbia, Dec. 01, 2025 (GLOBE NEWSWIRE) -- Maxus Mining Inc. ( “Maxus” or the “Company” ) (CSE: MAXM | FRA: R7V ), is pleased to provide a summary of 2025 exploration program highlights on the eastern block of its flagship Alturas Project (Please see Figure 1). The Alturas East Block (“ Alturas East ”, the “ Project ”, or the “ Property ”) is comprised of 1,094 hectares of prime critical mineral exploration ground in the Slocan Mining Division in British Columbia (Please see Figure 1). 1 The Project hosts the past-producing Alps-Alturas Mine and multiple zones of high-grade mineralization at surface. The Company completed an extensive field program over both blocks of the Alturas Project in 2025. Results are pending for the Alturas West Block. Key Highlights: Polymetallic mineralization confirmed along 500 metres of strike: Sampling confirms a broad, 500-metre mineralized veining corridor with continuous precious and base metal signatures along the Gold Quartz Ridge structural trend. Highlights include 18.20 g/t gold (“Au”), 131.00 g/t silver (“Ag”), and 0.23% copper (“Cu”) in mineralized quartz veins. Mineralization in multiple stratigraphic horizons and vein systems: High-grade mineralization is hosted across several lithologies and vein styles, indicating a robust, multi-phase mineralizing system comparable to historic producers in the district. 1,2 Outcrop sampling outlines gold, silver, nickel, lead, titanium, and zinc potential: Outcrop sampling outlines strong multi-commodity potential with elevated gold, silver, nickel, lead, titanium, and zinc values across multiple target areas. Sample G018669 at Olympus East returned 9.40 g/t Ag, 0.26% Pb (“Pb”), and 0.99% zinc (“Zn”). Sample G018707 at Gold Quartz Ridge assayed 9.79 g/t Au and 44.10 g/t Ag . Prime jurisdiction & location: The centre of Alturas East is road accessible, strategically located in the historically significant Slocan Mining Division, approximately two (2) kilometres northwest along strike of stratigraphy of the past-producing Highland Surprise Mine. 2 Scott Walters, Chief Executive Officer of the Company, commented, “What stands out in this Program is how consistently the assay results align with the district’s historic production profile. The strong silver-lead-zinc values across the Gold Quartz trend, the gold-rich vein samples, and the nickel-bearing ultramafic units at Olympus collectively point to a robust, multi-phase mineralizing system. These outcomes validate our exploration model and highlight the potential for new discoveries along the same structural corridors that supported past producers in the region.” Figure 1: Alturas Project Map About the Alturas East Block Alturas East is situated two kilometres northwest along strike of the Highland Surprise Mine, a past-producing mine defined by polymetallic veins containing gold, silver, lead, zinc, and copper. 2 Alturas East is underlain by intermediate and ultramafic volcanics (serpentinite) of the Kaslo Group. A major shear zone trending NNW has been mapped across the Property, which hosts the Olympus East & West showings and intersects the serpentinite body along its western margin (Please see Figure 2). 3,4 Zones of mineralized quartz veining associated with this structure have been historically explored, which the Company is actively building into its geological interpretation. Importantly, the Property has not seen systematic modern exploration since the 1970s, when geophysical surveys and soil grids first outlined anomalous zones. Very limited drilling has been completed, providing significant exploration upside. Notably, historic drillhole WBC-80-4 intersected 0.72 g/t Au over 0.91 m from 12.8 m depth within quartz-carbonate veining hosted in an andesitic flow. This hole confirmed anomalous gold values but was never followed up. 5 2025 Field Program Highlights The Company contracted Palliser Exploration Ltd. (“ Palliser ”) to complete a comprehensive exploration program on the Property in fall 2025 (the “ Program ”). The Palliser field teams completed detailed prospecting, mapping, and surface sampling by systematically covering the Property in diligently planned traverses. Four main clusters of 2025 exploration highlights from the Program are outlined and described by their nearest existing mineral occurrences/historic showings below (Please see Figure 2). A table outlining result highlights is presented in Table 1. Figure 2: Alturas East 2025 Exploration Program Result Highlights. SB 78 All samples collected from northwest of the SB 78 area were taken from float material, returning a compelling polymetallic signature. Sample G018654 assayed 1.53% Cu and 4.90 g/t Ag from sheared, pentlandite-bearing tuff, and 2.01% Cu and 5.70 g/t Ag from sample G01870