Mr. Peter Berdusco reports

CANADA ONE COMPLETES PHASE ONE EXPLORATION AT COPPER DOME

Canada One Mining Corp. has provided an exploration update following the 2026 phase 1 exploration program conducted at its 100-per-cent-owned Copper Dome project in Princeton B.C.

2026 phase 1 field program highlights:

• Crews established 16 field stations with full metadata across the property, systematically documenting geological observations to contextualize mineral showings in relation to property-scale and regional geology.
• A total of 12 rock samples were collected during the first phase of exploration and have been delivered to the laboratory for analysis.
• Detailed 1:5,000-scale geological and alteration mapping across the Boundary Zone and Friday Creek targets;
• Continued prospecting of underexplored areas of the property, including the Copper Dome South and Copper Dome East zones.

Peter Berdusco, president and chief executive officer of the company, commented: "We are excited about the first phase of the 2026 exploration program. Advancing our understanding of the mineral systems at Copper Dome is key to guiding our systematic, multiphase field programs. This work represents a strong start to the 2026 field season and will help inform subsequent exploration phases."

Exploration summary

Crews completed the phase 1 field program at the Copper Dome project, with work focused on systematic geological mapping, prospecting and the refinement of known mineralized zones.

During the program, 16 field stations were established across the property, with full metadata collected at each site to support consistent geological interpretation and property-scale context. A total of 12 rock samples were collected and submitted to ALS Geochemistry in Kamloops for analysis.

Detailed 1:5,000-scale geological and alteration mapping was completed across the Boundary Zone and Friday Creek targets, providing improved definition of lithological contacts, alteration patterns and mineralized trends. Field crews also continued prospecting in underexplored areas of the property, including the Copper Dome South and Copper Dome East zones.

Work at the Friday Creek showing focused on delineating surface mineralization and improving geological understanding of the system. Efforts were focused on zones where chalcopyrite stringers, mineralized breccia cement, and bornite clots and stringers were observed on surface during the 2025 field season.

Historical and newly identified geological features were documented to support continuing interpretation and target generation for future exploration phases.

All rock samples collected from the 2026 fieldwork program are pending and were submitted to ALS Geochemistry in Kamloops to be analyzed for gold and platinum group elements (50-gram fire assay) and multielement geochemistry, including elements copper, lead, zinc, cobalt and silver (method ME-MS61).

About the Copper Dome project

Copper Dome is located in the lower Quesnel Trough porphyry belt, one of British Columbia's most prolific mining districts. The project directly adjoins Hudbay Minerals Inc.'s producing Copper Mountain mine to the north, which the company reports as having proven and probable reserves of approximately 367 million tonnes at 0.25 per cent copper, 0.12 gram per tonne gold and 0.69 gram per tonne silver (Hudbay Minerals Inc., 2023). Multiple mineralized zones have been identified across the property, with historical drilling confirming high-grade copper associated with northeast-trending structures similar to those hosting mineralization at Copper Mountain.

The technical and scientific information regarding the adjacent Copper Mountain mine is sourced from Hudbay Minerals' published reports. Mineralization at Copper Mountain should not be considered indicative of the mineralization on the Copper Dome project.

The Copper Dome project benefits from excellent infrastructure, enabling year-round access, cost-efficient exploration and a stable, low-risk jurisdiction.

Historical work completed:

• Geophysics: 51 kilometres of induced polarization (IP);
• Airborne magnetic and electromagnetic (EM) coverage over approximately 50 per cent of the property;
• Sampling: 2,253 soils and 378 rocks collected;
• Drilling: greater than 8,900 metres of diamond drilling;
• Trenching: over one kilometre excavated.

With a five-year drill permit in place, the company is focused on advancing the project toward drill-ready target definition.

About Canada One Mining Corp.

Canada One is a Canadian junior exploration company focused on copper -- the critical metal powering the global energy transition. The company advances projects from discovery through resource definition with disciplined data-driven exploration and responsible practices. Its flagship Copper Dome project, near Princeton, B.C., targets a porphyry copper-gold system in a Tier 1 jurisdiction. Canada One aims to deliver sustainable growth and long-term value for shareholders and local communities.

Acknowledgment

Canada One acknowledges the Copper Dome project is located within the traditional, ancestral and unceded territory of the Smelqmix people. The company recognizes and respects their cultural heritage and relationship to the land, honouring their past, present and future.

Qualified person

The technical information contained in this news release has been reviewed and approved by Ali Wasiliew, PGeo, a qualified person as defined in National Instrument 43-101, Standards of Disclosure for Mineral Projects.

Historical sampling

The sampling was done to the standards of the time and is considered historical in nature and is not NI 43-101 compliant and cannot be relied upon. The results are listed herein to show why the company is interested in this area. Future work and drilling may not repeat similar results.

We seek Safe Harbor.