Mr. Darryl Jones reports

STAR COPPER CONFIRMS COPPER CREEK MINERALIZED ZONE

During 2025, Star Copper advanced the Copper Creek satellite target located 2.5 kilometres southeast of Star Main from concept to drill ready.

Company chief executive officer Darryl Jones noted: "Collectively, the 2025 campaign mapping, soils sampling and first drill hole confirms continuity with historic copper mineralization and meaningfully advances Copper Creek toward identifying the porphyry-style source driving the drainage-scale anomalies. The drilling data significantly increases the overall scope of our Star project and offers intriguing early indications of a regional large-scale copper deposit. We are compiling results from the 2025 fieldwork and look forward to reporting the assay results from drill hole CC-25-001 as well as the related sampling, which is sure to have an interesting and potentially very positive impact on our plans for 2026 with the aim to extend confirmatory drilling on the Copper Creek target."

During the 2025 campaign, work at the Copper Creek target included establishing trail access from Star Main, completing a 32-sample soil grid over a strong IP (induced polarization) chargeability high in the upper Copper Creek drainage and detailed mapping with 36 rock samples within the Copper Creek gully system.

The program culminated in the first modern drill test identified as CC-25-001 (341181E, 6456422N, 902 metres above sea level; azimuth of 262 degrees, dip of minus 45 degrees; total depth of 151 metres). This initial hole was drilled west to evaluate and characterized copper-gold mineralization reported in 1970s drilling (ARIS 80026) within a wider 550-metre-by-1,000-metre copper- and gold-in-soil anomaly.

Drill hole CC-25-001 intersected sequences of heavily fractured and sheared andesite lithic tuffs and dark, cherty laminated sediments, with common brecciation and zones of intense chlorite-epidote alteration. The company is extremely confident that it has confirmed a new system of mineralization 2.5 kilometres away from the Star Main zone. The drill results set the stage for the 2026 campaign, where the company has already accessed the northern geophysical target in order to plan additional drilling to build out the overall project scope.

Chalcopyrite was observed in discrete intervals as quartz-epidote vein material and as semi-massive pyrrhotite-pyrite-chalcopyrite associated with shear zones.

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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