Mr. Darryl Jones reports

STAR COPPER BEGINS STEP-OUT DRILLING AT STAR MAIN LOCATION TO TEST NORTHEAST EXTENSION OF HYPOGENE SYSTEM

Star Copper Corp. has mobilized a second drill rig as a scheduled component of the 15,000-metre drill program at its Star copper-gold porphyry project located within the well-known Golden Triangle and Golden Horseshoe regions of British Columbia.

The fully financed 2026 drill campaign was designed to focus on first-pass and follow-up drilling across Star Main and four key exploration target areas (Star North, Copper Creek, Star East and Star West). Current drill scheduling now focuses activity to test a northeastern extension at the Star Main target area and is designed to evaluate the continuation of hypogene mineralization beyond 100 metres to the east of historic drill hole S-025, which intersected 269 metres grading 0.42 per cent copper and 0.198 gram per tonne gold and remains one of the strongest historical drill holes completed within the northeastern portion of the Star system.

Since hypogene processes occur deep below the Earth's surface and tend to form deposits of primary minerals, as opposed to supergene processes that occur at or near the surface and tend to form secondary minerals, Star Copper believes the evidence to date represents a compelling resource expansion opportunity, with historical drilling, alteration patterns and geophysical signatures suggesting the Star Main system remains open to the northeast and may extend well beyond the currently defined mineralized footprint.

Star Copper chief executive officer Darryl Jones noted: "The case for a strong hypogene system to aid in building a geologic constrained resource model points us directly northeast of known drilling into a region that has seen little modern exploration. Our management, advisory and technical teams all see a significant opportunity to not only extend the Star Main project area but also unlock new targets to add to the overall porphyry model. Hypogene processes represent the backbone of these types of systems, and we firmly believe in the model and approach."

The planned drilling will test interpreted extensions of the mineralized porphyry corridor along strike and at depth, targeting coincident magnetic and chargeability anomalies that have never been adequately drill tested. Hole S-063 is being drilled 60 metres east of hole S-054A, which was drilled on the eastern margin of the Star Main system to test a coincident magnetic and IP (induced polarization) chargeability anomaly and evaluate continuity from the strong results from historic hole S-025. The drill hole successfully confirmed widespread copper-gold mineralization and refined the structural and alteration model in an area considered important for future resource opportunities. Hole S-054A intersected 183 metres grading 0.28 per cent copper equivalent (0.23 per cent copper and 0.06 gram per tonne gold) from 26 metres, including 108 metres of 0.36 per cent copper equivalent from 106 metres and 45 metres of 0.47 per cent copper equivalent from 137 metres (see news release of Jan. 13, 2026).

Hole S-054A encountered chalcopyrite mineralization associated with quartz-sulphide veinlets, multiple fault zones, brecciation and several potassic alteration intervals, helping demonstrate that the mineralized system extends into the northeastern portion of Star Main. This hole was successful in mapping the structural architecture and alteration zoning across the magnetic-chargeability high, providing important vectors for future stepout drilling toward the northeast extension of the deposit.

Based on historic drilling in the Star Main zone on an east-west interpretation, the mineralization looks to continue to the northeast with hypogene mineralization from surface as the lowest-risk drilling opportunity prior to the completion of the advanced study utilizing Quantec 3-D IP and MT (magnetotellurics) across the target area. Once the geophysics are completed, Star Copper will begin drill testing additional high-priority drill targets to bring the nested porphyry model to the forefront, which will significantly advance the company's efforts toward a maiden resource valuation and commensurate shareholder value.

Qualified person

Jeremy Hanson, PGeo, a qualified person as that term is defined under National Instrument 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 a Canadian mineral exploration company focused on the discovery and advancement of large-scale copper-gold systems in British Columbia. The company's flagship Star project is located in British Columbia's prolific Golden Triangle and hosts multiple high-priority targets and exhibits geological characteristics consistent with significant porphyry copper deposits. The project hosts multiple copper-gold porphyry-style targets, including Star Main, Star North, East and West, Copper Creek, and Copperline. 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 as well as 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 newly acquired Indata and Zymo projects 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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