Star Copper prepares for phase 2 drilling at Star

Mr. Darryl Jones reports STAR COPPER PHASE 2 DRILL PREPARATION UNCOVERS SIGNIFICANT MINERALIZATION AT SURFACE Preparation activities are under way for Star Copper Corp.'s planned 2025 phase 2 drill program. The first hole in the phase 2 series is designated as hole G (S-056) and during drill pad construction the crew uncovered what appears to be the top of a large supergene-enrichment zone with some exceptional malachite mineralization. Once phase 2 drilling commences, hole G (S-056) is located to the south of the Star fault zone, a roughly planar structure marked by broken, clay-rich gouge and will be drilled to 500 metres to test targets that hole D was unable to fully intersect. The hole is collared approximately 130 metres south of hole D (S-053B) and approximately 100 m west of hole F (S-055) (UTM 339,691E/6,458,142N, elevation 1,050 metres; azimuth 000 degrees, dip negative 75 degrees; planned depth 500 m) and is positioned to further evaluate the southwest extension of magnetic and induced polarity anomalies. Geologically, hole G is designed to pierce near-surface supergene copper mineralization where copper occurs as malachite and azurite along oxidized fractures, before stepping down into the hypogene domain where copper is hosted as chalcopyrite (cpy). The hole is set to cross a corridor of mineralized quartz monzodiorite (QMD) identified in hole F (S-055), where recent drilling documented cpy as fine disseminations and within sheeted quartz-pyrite-chalcopyrite-K-feldspar veinlets, later quartz-calcite-chlorite-pyrite-cpy veins and pyrite-cpy stringers. At depth (greater than 300 metres), hole G aims to evaluate a hypogene Cu (copper) plus or minus Au (gold) zone intersected in historical hole S-040, tying intrusive phases, potassic (potassium-feldspar) alteration and structural corridors together across the south side of the Star fault zone. Company chief executive officer Darryl Jones notes: "By retesting the target that hole D could not fully evaluate and by stepping west from hole F, our upcoming hole G is positioned to confirm and extend the copper footprint of Star Main to the southwest, clarify grade-control architecture in the footwall of the Star fault zone and strengthen links between oxidation profiles, potassic alteration and hypogene sulphide mineralization. As the first hole of phase 2, it marks the transition from phase 1's mapping of structure and alteration to targeted drilling that advances continuity and scale across Star Main." Copper Creek project area access established with mapping and sampling under way Copper Creek offers a whole new area that has confirmed copper mineralization from historic drilling which could extend the Star deposit and unlock huge value. Plans are being formulated to drill copper creek with the extension of the ongoing exploration program. Copper Creek's favourable geological setting, structural complexity and proximity to current exploration activities has earned it a place as a high-priority target for the company. Copper Creek may represent the southeastern extent of a broader mineralized trend that could extend northwest toward the Main zone, offering significant upside for resource expansion. Crews have recently established ground access to the Copper Creek zone, located 2.5 kilometres southeast of Star Main. Recent fieldwork has validated historical exploration records and established a reliable geospatial foundation for exploration. Mapping and sampling of the roughly two-kilometre-by-1.5-kilometre Cu plus/minus Au in soil anomaly is under way and insights from this program will inform potential drilling in the later stages of phase 2 drilling at the Star property. See company news release of July 22, 2025, for additional information. Qualified person Jeremy Hanson, PGeo, a qualified person as that term is defined under NI 43-101, is an independent contractor of the company and has reviewed and approved the technical aspects of this news release. About Star Copper Corp. Star Copper is an exploration and development company focused on developing high-potential copper projects in mining-friendly jurisdictions. The company aims to advance its British Columbian flagship Star project where significant exploration work including historical drilling has confirmed open mineralization at depth and in all directions. Star Copper's strategic plans include geological mapping and geophysical surveys to refine existing targets, diamond drilling programs to test high-priority zones, environmental baseline studies and permitting groundwork alongside data analysis, and resource modelling to support a future resource estimate prepared in accordance with National Instrument 43-101. The company further plans to advance its Indata project with follow-up drilling to expand on previous high-grade copper and gold intercepts, trenching and surface sampling to delineate mineralized zones, and infrastructure improvements for site accessibility and operations. With a commitment to sustainable development and value creation, Star Copper aims to position itself to support surging industrial demand to meet growing global electrification needs. We seek Safe Harbor.