Mr. Gil Clausen reports

EDGE COPPER REPORTS BROAD OXIDE INTERCEPTS AT ZONIA AND CONFIRMS MINERALIZATION BEYOND PREVIOUSLY INTERPRETED BOUNDARIES

Edge Copper Corp. has released assay results from eight additional diamond drill holes completed as part of its approximately 54,000-foot (ft) drilling program at the company's 100-per-cent-owned Zonia copper project in Arizona. The company has now reported results from 53 holes in the current program.

Eight additional holes confirm broad, near-surface oxide copper mineralization across the central and northern portions of Zonia, and extend mineralization well below shallow historical drilling. Edge Copper will incorporate the results into its updated geological and resource models, and the planned fourth quarter 2026 mineral resource estimate.

Importantly, drilling to date has changed the company's interpretation of Zonia's potential limits. The western lithologic contact and eastern fault were previously interpreted as possible boundaries to the mineralized system. Current drilling demonstrates that mineralization crosses both features, and neither is now considered a hard boundary.

"The latest drilling is doing more than confirming continuity within the PEA design pit; it is changing our understanding of the limits and scale potential of Zonia," said Gil Clausen, chair and chief executive officer of Edge Copper. "The western lithologic contact and eastern fault were previously treated as potential boundaries. The data now show mineralized zones extending across both features, so neither should be viewed as a hard limit to the system. These oxide results strengthen the geological model for the fourth quarter 2026 mineral resource update, and the forthcoming sulphide results will provide a much fuller view of Zonia's scale potential."

Drill hole highlights

• ZND0045 returned 475 ft grading 0.25 per cent CuT from surface, including 160 ft grading 0.30 per cent total copper (CuT) from 70 ft, 30 ft grading 0.32 per cent CuT from 280 ft and 35 ft grading 0.36 per cent CuT from 380 ft.
• ZND0063 returned 277 ft grading 0.33 per cent CuT from surface.
• ZND0055 returned 345 ft grading 0.25 per cent CuT from 480 ft, including 210 ft grading 0.30 per cent CuT from 605 ft, plus a separate 33 ft interval grading 0.19 per cent CuT from 860 ft.
• Additional broad oxide intervals include: 401 ft grading 0.18 per cent CuT in ZND0036, 391 ft grading 0.21 per cent CuT in ZND0025 and 373 ft grading 0.23 per cent CuT in ZND0047, including 31 ft grading 0.40 per cent CuT.

The new drilling reinforces continuity across the central and northern deposit areas, from near surface to depth, while identifying higher-grade zones within a broad mineralized envelope. ZND0045 confirms near-surface oxide copper mineralization in the north-central portion of the PEA design pit. ZND0055 extends oxide mineralization well below shallow historical drilling along the northwest margin.

More broadly, the program has materially changed Edge Copper's interpretation of the mineralized system. Earlier models treated the western lithologic contact and eastern fault as potential limits. Current drilling demonstrates that mineralization continues across both features. The geological model is being revised accordingly, increasing the area considered prospective for mineralization and future resource evaluation.

Program outlook

Edge Copper is integrating the new assays with oriented core, geological logging, high-resolution core scans, and sequential copper analyses to refine the geological and resource models. Current work is focused on:

• Evaluating the continuity and geometry of the higher-grade intervals in ZND0045 and ZND0063;
• Refining the oxide, mixed and sulphide boundaries, and updating the geological model to reflect mineralization across the western lithologic contact and eastern fault;
• Testing the mineralized system along strike, laterally, down dip and beyond previously interpreted limits;
• Advancing metallurgical testwork on representative mineralized material;
• Completing the technical work required to support an updated Zonia mineral resource estimate in the fourth quarter of 2026.

The company expects to continue reporting results as assays, QA/QC (quality assurance/quality control) review and geological interpretation are completed. The next drill results release is expected to present the sulphide results from the current program and discuss their implications for the geometry and scale potential of the broader Zonia system.

QA/QC

All drill samples were collected under the supervision of the company's geological staff in accordance with industry-standard quality assurance and quality control procedures. Samples are from HQ-diameter core. Core is scanned and logged before being cut; half-core samples are submitted for assay and the remaining material is retained at site for future reference.

The QA/QC program includes certified reference materials, blanks and duplicate samples inserted at regular intervals. Assay samples were collected directly from site by Skyline Assayers and Laboratories, and transported to Skyline's independent, accredited laboratory in Tucson, Ariz., for preparation and analysis. Sample preparation included drying, crushing, splitting and pulverizing. Total copper was determined using Skyline's single-element method, consisting of three-acid digestion followed by atomic absorption spectroscopy determination.

Significant intervals were calculated using a 0.10 per cent CuT cut-off. Drill core is oriented where possible. Most holes in the current program were drilled at inclinations of approximately negative 45 to negative 58 degrees and oriented toward the southeast; ZND0063 was drilled at negative 73 degrees toward the northwest. Drill orientations were selected to be broadly orthogonal to the interpreted strike and dip of the mineralized system, associated foliation, and major bounding fault structures. Based on the current geological interpretation and drill geometry, the reported intervals are interpreted to represent approximate true thicknesses.

Qualified person

The scientific and technical information contained in this news release has been approved by Patrick B. Redmond, PhD, PGeo, a consultant to the company, who is a qualified person as defined by National Instrument 43-101 -- Standards of Disclosure for Mineral Projects. Dr. Redmond has verified the technical data supporting this news release by reviewing assay data, QA/QC results, drill logs, sampling records and drill hole collar/survey information.

About Edge Copper Corp.

Edge Copper is a copper-focused exploration and development company advancing its 100-per-cent-owned Zonia copper project in Arizona. Zonia is a past-producing heap-leach copper operation in Arizona's historic Walnut Grove mining district. With existing infrastructure, a 2026 preliminary economic assessment and significant resource-expansion potential, Zonia is positioned as a U.S. copper development project. Edge Copper is advancing resource definition, metallurgy and technical studies through a disciplined approach to future development.

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