Mr. Scott Walters reports

MAXUS MINING INITIATES AIRBORNE GEOPHYSICAL SURVEY AT ITS ALTURAS ANTIMONY PROJECT IN BRITISH COLUMBIA

Maxus Mining Inc. has commenced an airborne geophysical survey at its flagship Alturas antimony project in British Columbia. The company has engaged Geotech Ltd., a globally recognized leader in airborne electromagnetic surveying, to carry out a high-resolution versatile time-domain electromagnetic geophysical survey. This program represents a key first step in advancing Alturas West toward drill targeting and will also form part of a broader regional exploration initiative that extends to the company's Quarry, Hurley and Lotto properties.

"The commencement of this VTEM survey marks an important inflection point for Maxus across our project portfolio," said Scott Walters, chief executive officer of Maxus Mining. "This program is designed to rapidly improve our understanding of the subsurface architecture and structural controls that underpin antimony mineralization across Alturas. With high-quality geophysical data in hand ahead of the 2026 field season, we will be well positioned to refine priority drill targets and advance Alturas West in a disciplined, technically driven manner."

The Alturas West portion of the survey will consist of approximately 149 line kilometres spaced at 100 metres, and will significantly enhance the company's understanding of the property-scale structural architecture and controls on mineralization at Alturas West. The Alturas East project block survey will consist of approximately 177 line kilometres, spaced at 100 metres.

The program has been specifically designed to identify geophysical signatures associated with shear-, sediment- and/or intrusion-hosted mineral systems by mapping contrasts in bedrock resistivity and magnetic response. With effective depth penetration in the range of approximately 300 to 500 metres, the results are expected to provide critical subsurface insight and support the refinement of high-priority exploration and drill targets ahead of the company's planned 2026 field program at Alturas West.

Geotech personnel has mobilized, and survey operations have commenced, subject to weather conditions, and all planned programs are expected to be completed prior to spring 2026. Maxus will receive daily data deliveries throughout the program. Convolutions Geoscience Corp., led by Kyle Patterson, PGeo, will provide continuing quality assurance and quality control oversight to ensure data integrity and consistency. Convolutions will also support strategic interpretation and targeting, as previously disclosed in the company's news release dated Dec. 16, 2025.

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, exploration, of the company, 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 Alturas, which includes a review of the historical sampling, analysis 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 Alturas. 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 Alturas.

The historic estimate described above fall under the National Instrument 43-101 definition of a historic estimate meaning that the calculations were prepared prior to the Feb. 1, 2001, implementation of NI 43-101 and therefore do not conform to NI 43-101 standards. No NI 43-101-compliant resource estimates exist to date on Alturas.

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 up to 69.98 per cent. The Hurley antimony project, located adjacent to Endurance Gold Corp.'s Reliance gold project, where 2024 drilling reported 19.2 per cent antimony and 2.16 grams per tonne gold over 0.5 metre, and the Quarry antimony project, which hosts historical polymetallic samples grading 0.89 g/t gold, 3.8 per cent copper, 0.34 per cent zinc, 42.5 per cent lead, 0.65 g/t silver and 20 per cent antimony. 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, 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 Cu (TK17-149c), 1,808 ppm Cu (TK17-28) and 2,388 ppm Cu (TK17-12). Alturas is strategically located near the historic Sullivan mine at Kimberley, B.C., an area that continues to attract significant exploration activity.

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

We seek Safe Harbor.