Sun Summit Minerals Commences Second‑Phase Exploration at the Theory Copper‑Gold Project

Sun Summit Minerals Corp. (TSX‑V: SMN, OTCQB: SMREF) today announced that its exploration teams have begun the second phase of its 2026 field program at the Theory copper‑gold project in the Toodoggone Mining District of north‑central British Columbia. The project, owned 100 % by Eagle Plains Resources Ltd. (TSX‑V: EPL), sits adjacent to Thesis Gold’s Ranch Project and lies within ten kilometres of Sun Summit’s own JD Project.

Project Context

The Theory property covers 122 hectares of which 0.5 % of the net smelter royalty is held by a third party. Sun Summit holds an option agreement that could give it up to a 100 % interest in the project. The Toodoggone district is well‑known for its high‑grade copper‑gold potential, and the Theory Project has recently undergone significant exploration that has rekindled interest after over three decades of inactivity.

2026 Work Program Overview

The 2026 exploration program builds on the accomplishments of the 2025 field season, which marked the first substantial work on the property in more than 30 years. The program is divided into three phases:

  1. Airborne Magnetotelluric (MT) Survey (Completed) – 476 km of Mobile MT surveying was finished in June, with a nominal line spacing of 250 m. Conducted by Expert Geophysics Surveys Inc. under the guidance of geophysicist Andrei Bagrianski, P.Geo., the survey images subsurface resistivity to identify intrusive bodies and potential mineral‑bearing conduits. Final deliverables are expected shortly and will steer subsequent phases.

  2. Ground Fieldwork (Phase 2, Ongoing) – A 28‑day campaign is underway, featuring prospecting, detailed geological mapping, and geochemical sampling of rock, soil, and silt. Teams are based from temporary, helicopter‑supported camps, and work focuses on evaluating targets highlighted by the 2025 fieldwork and the newly acquired MT data. The fieldwork is managed by TerraLogic Exploration Inc., with logistical support from Sun Summit’s JD Camp.

  3. Induced Polarization (IP) Survey (Phase 3, Planned) – Up to 22 km of IP surveying is planned over high‑priority target zones, notably the Bev and Saboteur Zones. The IP data will further delineate conductive bodies associated with copper‑gold mineralisation.

The entire program is budgeted at approximately $700,000 and is scheduled to run through September, with results slated for analysis and modelling that will guide a 2027 drill‑testing campaign.

Strategic Significance for Sun Summit

For Sun Summit, the Theory Project represents a strategic opportunity to expand its copper‑focused portfolio in a district with demonstrated potential. The company’s option agreement allows it to acquire a full interest should the exploration yield positive results. By partnering with Eagle Plains, Sun Summit gains access to a 100 % owned property, while benefiting from Eagle Plains’ operational expertise and existing infrastructure.

The ongoing fieldwork also aligns with Sun Summit’s broader exploration philosophy, which emphasises the acquisition and systematic evaluation of mineral properties. The company’s focus on copper, coupled with its global supplier network, positions it to capitalize on rising demand for base metals and the associated infrastructure projects worldwide.

Market Context

As of 21 July 2026, Sun Summit’s share price stood at $0.125 CAD, a modest reflection of its exploratory status. The company’s market capitalisation is approximately $38 million CAD, and it trades on the TSX Venture Exchange. Its price‑earnings ratio is –2.69, typical for a discovery‑stage mining outfit. The 52‑week high reached $0.26 in September 2025, while the 52‑week low fell to $0.08 in July 2025, underscoring the volatility inherent in early‑stage mining ventures.

Outlook

The commencement of the 2026 fieldwork marks a critical step toward validating the Theory Project’s potential. Should the geophysical surveys and surface sampling reveal promising targets, Sun Summit will likely advance to a drilling program in 2027, with the ultimate goal of establishing a viable mine operation or securing a stake that could be monetised through a partnership or sale. Investors and market observers will be watching closely for data releases and subsequent drilling results that could significantly influence the company’s valuation and strategic direction.