Sun Summit Drills Strongest Interval to Date at the Creek Zone: 81.0 Meters of 4.80 g/t Gold from 26 Meters Downhole, Including 14.0 Meters of 19.81 g/t Gold at the JD Project, Toodoggone District, B.C.Vancouver, British Columbia--(Newsfile Corp. - November 25, 2025) - Sun Summit Minerals Corp. (TSXV: SMN) (OTCQB: SMREF) ("Sun Summit" or the "Company") is pleased to report the remaining assay results from all 2025 drilling at the Creek Zone, JD Project, Toodoggone Mining District, north-central British Columbia. Drill hole CZ-25-021 returned the strongest interval of near-surface gold mineralization drilled to date at the Creek Zone: 81.0 meters of 4.80 g/t gold starting at 26.0 meters downhole, including 14.0 meters of 19.81 g/t gold. The drill hole tested the down-dip extent of significant gold mineralization intersected in drill hole CZ-25-007 (78.0 meters of 3.72 g/t gold including 19.1 meters of 7.50 g/t gold, see news release dated September 8th, 2025). This interval extends bulk-tonnage and high-grade gold mineralization to a vertical depth of approximately 150 meters from surface (Figures 2 and 3).Highlights:Drill Hole CZ-25-021 tested the down-dip extent of significant gold mineralization intersected in drill hole CZ-25-007 and returned an equally strong zone of near-surface, continuous gold mineralization punctuated with high-grade veins:81.0 meters of 4.80 g/t gold from 26.0 meters downhole, including34.0 meters of 9.07 g/t gold, and includinghigh-grade intercepts of: 155 g/t Au over 1.0 meter at 42.0 meters downhole101 g/t Au over 1.0 meter at 54.0 meters downhole30.6 g/t Au over 1.3 meter at 78.0 meters downholeConfirms the strong high-grade gold potential of the Creek Zone: The 81.0-meter interval in CZ-25-021 is down-dip from the significant interval intersected in CZ-25-007 and extends the zone at depth with strong continuity extending approximately 150 meters from surface. Based on these results, management believes that further drilling down-dip and stepped to the northeast is warranted. Establishing significant scale-potential at the Creek Zone: Drilling in 2025 outlined a significant, fault-bounded northwest-trending mineralized corridor that spans ~750 meters by 300 meters and ~150 meters vertical depth from surface (Figure 1). Highlight intervals across the Creek Zone in 2025 include:46.0 meters of 0.9 g/t gold from 20.0 meters downhole and 1.0 meters of 158.5 g/t gold from 134.0 meters downhole and 17.0 meters of 1.25 g/t gold from 151.0 meters downhole in hole CZ-25-008.17.0 meters of 2.32 g/t gold from 308.5 meters downhole including 13.5 meters of 2.85 g/t Au in hole CZ-25-016, approximately 460 meters southeast of CZ-25-021 (Figures 1 and 2).15.0 meters of 1.39 g/t gold from 87.0 meters downhole, including 10.5 meters of 1.75 g/t gold in hole CZ-25-018, approximately 100 meters northwest of CZ-25-021 (Figures 1 and 2).Every hole intersected gold mineralization and the system remains open in all directions across the corridor.Metallic screen analyses underway: A large selection of Creek Zone drill core from 2024 and 2025 drilling has been submitted for metallic screen analysis to better understand the gold deportment.Finn Zone and Belle South Porphyry Zone results pending: Assay results are pending from four drill holes from the Finn Zone, located approximately 3.5 km east of the Creek Zone as well as two drill holes from a compelling porphyry target at Belle South, 8 km southeast of the Creek Zone."We are pleased to announce very exciting new drill results from the 2025 program on the Creek Zone. The 2025 program was successful in demonstrating large intervals of near-continuous gold and silver mineralization in the near surface portion of the Creek Zone, highlighting high-grade gold in veins, while also identifying important structural features. Every completed drill hole intersected gold-silver mineralization and continues to demonstrate there is a zone of gold and silver mineralization with significant width and depth expansion potential, punctuated by well-mineralized quartz-carbonate veins with some of the highest-grade gold drill intercepts known from the JD property," said Niel Marotta, CEO of Sun Summit Minerals. "The final hole of this year's drill program at the Creek Zone returned the largest gram-meter intercept of both the 2024 and 2025 programs. While we await more exciting results from the Finn and Belle South Zones, we continue modelling and planning for follow-up drill holes at the Creek Zone, which remains open for expansion. Our newest iteration of a robust 3D geological and structural model will inform targeting for the next season and gives us a strong technical advantage relative to historical drilling which failed to recognize the interplay of important orientations of the various structural fabrics inherent to the mineralization domains, including bulk-tonnage and high-grade potential of the Creek Zone."Table 1. Assay Results for Drill Hole CZ-25-021HoleFro