Sun Summit Outlines 2026 Exploration Plan for the Theory Copper-Gold Project, Toodoggone Mining District, BC

About this update from Sun Summit Minerals Corp.

Vancouver, British Columbia--(Newsfile Corp. - May 26, 2026) - Sun Summit Minerals Corp. (TSXV: SMN) (OTCQB: SMREF) ("Sun Summit" or the "Company") is pleased to provide an overview of its upcoming exploration program at the Theory Copper-Gold Project, Toodoggone Mining District, north-central British Columbia (the "Theory Project"). The purpose of the 2026 exploration program is to build on the favourable 2025 sampling and mapping results using a combination of airborne geophysics (Mobile MagnetoTellurics ("MobileMT")), geological mapping, prospecting and soil/silt and rock geochemistry, followed by possible ground IP (induced polarization) geophysical surveys across the most promising target areas. A priority focus will be on the BEV to Saboteur trend of strong copper mineralization with an emphasis placed on advancing the project to drill ready for 2027. Work in 2025 (see news release of the Company dated January 21, 2026) targeted the BEV, FRED (1-3 and DM), STIK, DAR, and SOUTH zones. "Our second season at Theory is focused on prioritizing the strongest targets ahead of planned drill testing in 2027. The project's proximity to JD and the active exploration environment across the Toodoggone make this a compelling next step for Sun Summit," said Niel Marotta, CEO, Sun Summit Minerals. The Theory Project: The 9,676 hectare Theory Project borders Thesis Gold and Silver Inc.'s Ranch Project to the north and is located within 10 km to the northwest of Sun Summit's JD Project (Figure 1). The project covers the northern extent of the significant Toodoggone district and is considered highly prospective for epithermal-related gold-silver mineralization and porphyry-related copper-gold mineralization. Reconnaissance-style exploration in 2025 resulted in the definition of numerous target areas (see news release of the Company dated January 21, 2026). These targets, which will be the focus for 2026, include: Figure 1. Map of the Toodoggone District showing the location of the JD, Theory and Orbit Projects in relation to other development and exploration projects. Data sourced from Thesis Gold & Silver Inc., TDG Gold Corp. and Centerra Gold Inc.'s respective corporate websites. The qualified person has been unable to verify the information and that the information is not necessarily in...

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