Star Copper Phase 2 Drilling Continues to De-Risk and Expand Footprint to West and North at Star Main System

Executive Summary

• Star Copper released preliminary drill results from hole S‑057 (completed) and ongoing hole S‑058 at its 100 % owned Star Project in British Columbia.
• The data tighten the 3‑D geometry of the Star Main system, extending the potassic, chalcopyrite‑bearing corridor westward and probing continuity northward beyond historic drilling.
• A marketing services agreement with Capital Analytica was announced, providing $150 k cash plus 200,000 incentive stock options as compensation for investor‑relations activities.

Key Details

• Hole S‑057: Steep fan from the S‑056 pad (1,050 m ASL); total depth 511.25 m; intersected ~140 m of pervasive potassic alteration in quartz monzodiorite; early quartz‑actinolite‑pyrite‑epidote veins with chalcopyrite identified, indicating a sustained hypogene fluid system.
• Hole S‑058: Vertically drilled step‑out 60 m north of historic hole S‑037; currently to ~250 m depth (planned 500 m); passes oxidized fractured QMD → layered volcanic package → dense quartz‑pyrite‑chlorite‑magnetite veining with increasing chalcopyrite percentages.
• Geologic Interpretation: Results support a westward‑trending potassic corridor and northward extension of the Star Main mineralization, de‑risking the model and expanding the target footprint.
• Sampling: Core from S‑057 has been sampled and sent to Bureau Veritas Laboratories for analysis under NI 43‑101 QA/QC protocols.
• Marketing Agreement: Effective 5 Oct 2025, Capital Analytica will provide awareness, marketing, and IR services for six months; compensation includes $150,000 cash plus issuance of 200,000 incentive stock options at an exercise price of $1.20 per share (exercisable within 12 months).
• Qualified Person: Jeremy Hanson, P.Geo., reviewed and approved the technical content of this release.

Notable Quotes

“Based on the results of our extremely promising six‑hole Phase 1 drill program, our Phase 2 campaign continues to build our understanding of the fault structure and grade of the supergene zone through and transition to hypogene copper mineralization at Star Main.” – Darryl Jones, CEO & President

Materiality Assessment: Non‑Material – Positive (preliminary exploration results that are encouraging but not yet indicative of a definitive resource or financial impact).