Mr. Darryl Jones reports

STAR COPPER KICKS OFF INAUGURAL DRILLING AT STAR NORTH TARGET

Drilling is under way on the inaugural hole on Star Copper Corp.'s Star North target, located one kilometre northeast of the Star Main project area.

The inaugural hole, SN-25-001 (UTM 340,487E/6,459,084N; elevation 1,163 metres; azimuth 131 degrees; dip minus 45 degrees; planned depth 400 metres), is currently drilling at a depth 144 metres.

The Star North target hosts two documented copper styles: (1) semi-massive chalcopyrite in veins and stringers within strongly silicified and brecciated volcanic units; and (2) fine to blebby disseminated chalcopyrite plus or minus pyrite in quartz monzodiorite/monzonite with potassic alteration.

Star North is a high-impact target located two kilometres northeast of the Star Main target and 2.5 kilometres north the Copper Creek target. This target has the same characteristics as the Star Main target with a well-defined 500-metre-by-1,000-metre soil geochemical anomaly and coincidental IP (induced polarization) chargeability high. Drilling of the chargeability high at the Star Main target was directly correlated to some of the best results in historic drilling. Star North offers up a compelling opportunity for the company to establish this as a nested porphyry cluster model.

During the 2025 season, crews completed detailed mapping and collected 119 rock samples, highlighted by select grab samples AA002620 (17.6 per cent copper and 0.942 gram per tonne gold) and AA002628 (3.21 per cent copper) from semi-massive chalcopyrite in highly altered augite-plagioclase porphyry (see Table 1).

SN-25-001 is designed to test the heart of the target, coincident magnetic and IP chargeability anomalies beneath strong copper-in-soil trends and mapped copper showings. Hole SN-25-001 will evaluate the relationship between geophysics, alteration and sulphide distribution at depth.

"Kicking off drilling at Star North marks a major milestone for our 2025 program," said chief executive officer Darryl Jones. "With compelling surface results and robust geophysical and geochemical signatures, this first hole is an important step toward demonstrating a second copper centre alongside our Star Main location."

Quality assurance/quality control statement

Star Copper follows industry-standard protocols for diamond drilling and QA/QC procedures in British Columbia. All drilling is carried out using HQ- and NQ-sized diamond drill core. Drill core is transported from the drill site to a secure core logging facility, where it is logged, photographed and sampled under the supervision of geologists. Core is cut in half using a diamond saw, with one-half of the core placed in a sealed sample bag and sent for analysis and the other half retained on site for reference and further studies.

Samples are shipped under chain-of-custody protocols to Bureau Veritas Laboratories, an ISO/IEC 17025-accredited laboratory. At Bureau Veritas, samples are dried, crushed, split and pulverized to 85 per cent passing 200 mesh. Analytical procedures include multielement ICP-ES/MS following four-acid digestion, with gold and precious metals analyzed by fire assay with an atomic absorption or ICP finish.

Star Copper implements a robust QA/QC program, including the insertion of a minimum 5 per cent certified reference materials (standards), blanks and field duplicates at regular intervals into the sample stream to monitor analytical accuracy and precision. The performance on the blind standards, blanks and duplicates achieved high levels of accuracy and reproducibility and has been verified by Jeremy Hanson, a qualified person as defined by National Instrument 43-101.

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 100-per-cent-owned Star project in British Columbia's prolific Golden Triangle and Sheslay district. The project hosts multiple copper-gold porphyry-style targets, including Star Main, Star North and Copper Creek. Significant exploration 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, and environmental baseline studies and permitting groundwork alongside data analysis and resource modelling to support a future resource estimate prepared in accordance with NI 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.

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