Star Copper Advancing Canada's Next Cu-Au Porphyry Discovery with Completion of Three Step-Out Holes at Star Main

Executive Summary

• Completed Phase 2 drilling of three holes (S‑058, S‑059, S‑060) at the Star Main target, extending mineralized corridors north and west and sharpening vectors toward the potassic core.
• Core logging identified near‑surface oxide zones, chalcopyrite‑bearing D‑type veining, potassic alteration with quartz‑pyrite‑chalcopyrite veinlets, and dense vein corridors—indicating proximity to the porphyry copper system’s core.
• The company entered a $500,000 consulting services agreement with Upswitch Media Corp. to provide marketing and investor‑relations support for an initial 60‑day term.

Key Details

• Drill Hole S‑058 – 276 m deep; vertical; intersected oxidized quartz monzodiorite transitioning to layered volcanic sequence, then dense D‑type chalcopyrite veins below ~130 m.
• Drill Hole S‑059 – 317 m deep; 180°/‑80° dip; crossed steep structures and intrusive contacts; logged pervasive potassic alteration, sheeted quartz‑pyrite‑chalcopyrite veinlets, and stockwork typical of outer porphyry core.
• Drill Hole S‑060 – 322 m deep; 265°/‑85° dip; encountered strong K‑feldspar vein halos, sheeted to stockwork quartz‑chalcopyrite veining, and sulphide‑cemented breccia textures indicating proximity to the potassic core.
• Assay Status: Results for S‑058, S‑059, and S‑060 pending; 11 additional drill holes from the 2025 campaign also awaiting assay.
• Program Outlook: Data will feed planning of a 2026 drilling campaign focused on step‑outs and deeper testing to further define the nested porphyry model.
• Consulting Services Agreement: Effective Nov 14 2025, Upswitch Media Corp. will provide marketing/IR services for an initial 60‑day term; aggregate fee $500,000; no securities ownership by Upswitch or its principal.
• Qualified Person: Jeremy Hanson, P.Geo., reviewed and approved technical content per NI 43‑101.

Notable Quotes

“These three holes move the Star Main system forward on multiple fronts… we have extended mineralization into new panels, strengthened the link between potassic alteration and chalcopyrite at depth, and added corridors displaying significant veining density where it matters most.” – Darryl Jones, CEO & President, Star Copper Corp.