Mr. Scott Walters reports

MAXUS MINING ENGAGES ABH ENGINEERING FOR ORE SORTING AND METALLURGICAL TEST WORK DURING ALTURAS WEST PROJECT DRILL PROGRAM

Maxus Mining Inc. has engaged ABH Engineering Inc. to manage and conduct an early-stage metallurgical testing and ore sorting evaluation program at the company's Alturas West project in British Columbia.

The program will commence in tandem with the 2026 summer drill campaign and is designed to evaluate the metallurgical characteristics and ore sorting potential of mineralized material from the Alturas West project, including drill core, channel samples and historic material. The work is expected to provide important insights into potential recoveries, mineral processing characteristics and opportunities to optimize future project economics.

ABH Engineering is a Vancouver-based engineering firm specializing in mineral processing, ore sorting and project optimization. ABH has completed more than 75 ore sorting projects globally and has experience supporting National Instrument 43-101-compliant studies and mining projects for several major mining companies.

The metallurgical program is expected to include:

• Review and selection of representative geological samples;
• Co-ordination of laboratory-based metallurgical testing;
• Ore sorting evaluation and optimization;
• Assessment of metallurgical recoveries and processing characteristics;
• Recommendations for future metallurgical and development work.

The program will be managed by ABH's mineral processing team, led by Brent Hilscher, PEng, who is recognized for his expertise in ore sorting and mineral processing optimization.

Scott Walters, chief executive officer of Maxus, commented: "Partnering early with ABH Engineering represents an important milestone for Maxus as we continue advancing the Alturas West project with the first drill program in history. Their recognized expertise in ore sorting and mineral processing will help us better evaluate the project's metallurgical characteristics and potential development pathways. We believe this early-stage work has the potential to enhance our understanding of recoveries, processing efficiencies and the broader economic potential of the project as we move toward future exploration and development."

The metallurgical testing program will be completed in co-ordination with third party laboratories, with results expected to help guide future exploration and development planning at the project.

About ABH Engineering Inc.

ABH Engineering is a Canadian engineering firm focused on mineral processing, ore sorting, metallurgical optimization and mining project development. The company has experience supporting projects ranging from early-stage studies through to plant design and construction.

Qualified person statement

The scientific and technical information contained in this news release has been reviewed, verified and approved by Morgan Verge, PGeo, vice-president of exploration of the company and a qualified person as defined in National Instrument 43-101, Standards of Disclosure for Mineral Projects. Ms. Verge has examined information regarding the historical exploration at the project, which includes a review of the historical sampling, analytical and procedures underlying the information and opinions contained herein.

Management cautions that historical results collected and reported by operators unrelated to Maxus have not been verified nor confirmed by its qualified person; however, the historical results create a scientific basis for continuing work at the project. Management further cautions that historical results, discoveries and published resource estimates on adjacent or nearby mineral properties, whether in stated current resource estimates or historical resource estimates, are not necessarily indicative of the results that may be achieved on the project.

About Maxus Mining Inc.

Maxus Mining is a mineral exploration company focused on locating, acquiring and, if warranted, advancing economic mineral properties in premier jurisdictions. The company is actively progressing its diversified portfolio totalling approximately 15,098 hectares of prospective terrain across British Columbia, Canada.

The portfolio includes 8,920 hectares across three antimony projects, anchored by the flagship Alturas antimony project, where a recent discovery returned high-grade naturally occurring antimony (Sb) up to 69.98 per cent Sb. The Hurley antimony project, located adjacent to Endurance Gold Corp.'s Reliance gold project, where 2024 drilling reported 19.2 per cent Sb and 2.16 grams per tonne gold over 0.5 metre, and the Quarry antimony project, which hosts historical polymetallic samples grading 0.89 gram per tonne (g/t) gold (Au), 3.8 per cent copper (Cu), 0.34 per cent zinc (Zn), 42.5 per cent lead (Pb), 0.65 g/t silver (Ag) and 20 per cent Sb.

Maxus's portfolio further includes the 3,054-hectare Lotto tungsten project, where a selected 1980 grab sample from a scheelite-bearing quartz vein assayed 10.97 per cent WO3(tungsten trioxide), and the 3,123-hectare Penny copper project, which has over 100 years of recorded exploration. Recent work programs at Penny included rock sampling and geological mapping, with 2017 sampling returning copper values of 1,046 parts per million (ppm) Cu (TK17-149c), 1,808 ppm Cu (TK17-28) and 2,388 ppm Cu (TK17-12). The project is strategically located near the historic Sullivan mine at Kimberley, B.C., an area that continues to attract significant exploration activity.

Maxus Mining is committed to advancing its British Columbia projects through targeted exploration programs designed to unlock value across multiple critical mineral systems.

We seek Safe Harbor.