Star Copper begins phase 2 drilling at Star

Mr. Darryl Jones reports STAR COPPER COMMENCES PHASE 2 DRILL CAMPAIGN AND ADVANCES COPPER CREEK TARGET ACTIVITIES Star Copper Corp. has commenced phase 2 active drilling operations at its 100-per-cent-owned, 100-per-cent-financed and fully permitted 6,829-hectare (approximately 16,875-acre) flagship Star project in northwestern British Columbia's Golden Triangle region. With the successful conclusion of its phase 1 campaign, the company recognized its understanding of the underlying grade/fault relationship, overall orientation and mineralization of the Star deposit, thereby vastly simplifying the decision-making process to expedite its advance into phase 2 without delay. Phase 2 drilling kickoff Star Copper is therefore pleased to report that the kickoff of a proposed 4,000-metre phase 2 exploration program at the Star project was undertaken without issue and has already resulted in the planned completion of its first-in-series target, identified as hole S-056, which has intersected up to 240 metres of potassically altered rock with small intergrown bornite not seen yet in any previous drill samples on the Star project. This is a significant step in targeting and understanding the deposit in greater detail. Situated on a drill pad where fieldwork uncovered significant copper-oxide mineralization of malachite, azurite and chrysocolla in oxidized breccias (see the company's news release of Aug. 25, 2025), hole S-056 was collared approximately 100 metres west of S-055 and drilled north at minus 75 degrees to a depth of 551 metres. The hole cut a broad, near-surface oxide-to-transitional profile (approximately eight to 131 metres) with multiple faults and breccias with malachite noted on fractures locally to 50 metres depth, extending the oxide footprint west of S-055 along the western flank of Star Main. Below approximately 131 metres, S-056 transitions into the hypogene domain and exhibits some of the most consistent potassic (potassium-feldspar) alteration observed to date, with vein halos and pervasive replacement accompanied by sheeted and stockwork veining. Chalcopyrite (copper sulphide) occurs as fine disseminations and within quartz-pyrite-chalcopyrite veins and stockworks, including broad, well-veined intervals from 284 to 413 metres, with minor pyrite plus or minus chalcopyrite continuing intermittently to end of hole. Taken together with phase 1 results -- especially the oxide-to-hypogene profile in S-055, hole S-056 expands the known mineralized corridor approximately 100 metres to the west and strengthens the west-southwest trend of near-surface oxides above hypogene sulphides in quartz monzodiorite. Samples from S-056 will be reported once received and reviewed under the company's quality assurance/quality control protocols. Mineralization picture becomes clearer While the supergene zone at Star Main is a relatively rare find for this area of Canada, similar occurrences in the United States, Mexico and Chile suggest this signature aspect of the Star project demonstrates valuable metals concentration near the Earth's surface with resultingly enhanced grades of ore deposits. On the other hand, the discovery of hypogene mineralization involving ascending fluids from deep within the Earth may prove significant as the company expands discovery at depth. Previous company reports of copper iron sulphide mineralization focused on chalcopyrite, and it can now be reported to also include increasingly prevalent examples of bornite in sampling to date. Chalcopyrite (CuFeS2), which is crucial for copper production, has been identified in various geological formations and ore deposits across the project, and bornite (Cu5FeS4), which is recognized as an important high-grade copper ore, is often found in supergene enrichment zones. Samples from the phase 1 program have been shipped to the laboratory, and results will be reported once received and reviewed under QA/QC protocols. Copper Creek target update (southeast of Star Main) Preparations for drill-ready targets at the Copper Creek prospect have reached an advanced state of readiness. The field crew have complete trail access from the Star camp and have completed a systematic geological traverse across the Copper Creek gully system, which included stepping through coincident airborne IP (induced polarization) chargeability and magnetic anomalies while ground-truthing historic drill sites (G1-70 and G2-70). Mapping has identified multiple chalcopyrite-mineralized outcrops within fractured volcaniclastic units and disseminated within quartz diorite dikes and sills, with malachite and azurite staining on several outcrops west of the historic collars. Additional sulphide occurrences -- including pyrrhotite, sphalerite and galena -- were observed over roughly one kilometre of strike within the creek basin. The main mineralized zone comprises a three-to-four-metre-wide, subvertical breccia with quartz-sulphide and vuggy quartz-chalcedony veining, including several five-to-25-centimetre lenses of semi-massive pyrite-chalcopyrite hosted in heavily fractured volcanics. Interpretation and analysis of collected samples are under way to finalize drill-ready targets at Copper Creek for inclusion in the phase 2 program. Darryl Jones, chief executive officer of the company, noted: "Momentum is building. With hole S-056 confirming westward expansion at Star Main and Copper Creek advancing toward drill-ready status, phase 2 will focus on targeted stepouts, deeper tests along the W-SW trend and first-pass holes at Copper Creek to broaden discovery potential across the property. The entire team at Star Copper looks forward to sharing assay results and continued updates as phase 2 progresses." 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 an exploration and development company focused on developing high-potential copper projects in mining-friendly jurisdictions. The company aims to advance its British Columbian flagship Star project, where significant exploration work, 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. We seek Safe Harbor.