Edge Copper Reports New Oxide Drill Results at Zonia

VANCOUVER, BC, Sept. 14, 2026 /CNW/ -- Edge Copper Corporation (TSX: EDCU) ("Edge Copper" or the "Company") is pleased to report assay results from eight additional diamond drill holes completed as part of its ongoing approximately 54,000-foot drilling program at the Company's 100%-owned Zonia Copper Project ("Zonia" or the "Project") in Arizona. These results bring the total number of holes reported from the current program to 45.

Figure 1: Drill hole plan location map. Cross section locations shown in Figures 2 and 3 are shown by blue lines.

Figure 2: Cross section looking northeast showing ZND0030 beneath several shallow historical holes in the central part of the deposit. Historical holes have narrower traces. Drill-hole traces are colour-coded by total copper grade. Figure 1 shows the section location.

Figure 3: Cross section looking northeast showing ZND0060 at the northwestern margin of the current PEA design pit. The hole intersected a near-surface mineralized interval and a broader oxide and mixed interval at depth, extending beyond the current pit limit. The hole continued for approximately 1,080 ft beyond the modeled base of oxide; assays for the deeper portion are pending and are not included in this release. Historical holes have narrower traces. Drill-hole traces are colour-coded by total copper grade. Figure 1 shows the section location.

The principal result is from hole ZND0030, drilled in the central part of the deposit beneath several shallow historical holes. It returned 140 ft grading 0.45% total copper (CuT) from 0 ft, including 80 ft grading 0.63% CuT from 20 ft. A separate interval returned 340 ft grading 0.30% CuT from 400 ft, including 165 ft grading 0.40% CuT from 410 ft. Figure 2 shows the ZND0030 cross section.

ZND0030 adds two broad copper intervals in an area previously tested mainly by shallow historical holes.  The deeper mineralized zone in this hole demonstrates that oxide copper mineralization extends over approximately 550 ft of vertical extent in the central area of the deposit (see Figure 2).

Drill Hole Highlights

• ZND0030 returned 140 ft grading 0.45% CuT from 0 ft, including 80 ft grading 0.63% CuT from 20 ft, plus an additional interval of 340 ft grading 0.30% CuT from 400 ft, including 165 ft grading 0.40% CuT from 410 ft.
• ZND0060 returned 248 ft grading 0.30% CuT from 553 ft, including 156 ft grading 0.37% CuT from 598 ft. The reported oxide and mixed mineralization is on the northwestern margin of the deposit, beyond the current PEA design pit (Figure 3 shows the ZND0060 cross section).
• ZND0034 returned 465 ft grading 0.26% CuT from 0 ft in the northern part of the deposit, including 160 ft at 0.33% CuT from 105 ft.
• ZND0039 returned 623 ft grading 0.23% CuT from 2 ft, including 125 ft grading 0.34% CuT from 195 ft in the northern part of the deposit.
• ZND0041 returned 540 ft grading 0.22% CuT from 0 ft, including 70 ft grading 0.36% CuT from 105 ft, in the northern part of the deposit.

Together, the eight holes reported add broad intervals of copper mineralization in the central and northern deposit areas and at the northwestern margin, reinforcing the continuity and scale of the Zonia copper system from near surface to depth. The results include both higher-grade zones and broad intervals of resource-grade mineralization and will inform updates to the Company's geological and Mineral Resource models. See Figure 1 for drill hole locations and Appendix A for complete drill hole details and significant intercepts.

"These are encouraging oxide copper results for Zonia," said Gil Clausen, Chair and CEO of Edge Copper. "ZND0030 returned two substantial intervals in the central deposit area, including 140 ft grading 0.45% CuT from surface and 340 ft grading 0.30% CuT at depth. Holes ZND0034, ZND0039 and ZND0041 also returned broad intervals in the northern area of the deposit. We are incorporating these assays into our geological and Mineral Resource models as drilling continues and we work toward an updated Mineral Resource estimate."

Program Outlook
Edge Copper is incorporating the new assays, logging and core-scanning data into its geological and Mineral Resource models for Zonia. Current work includes:

• integrating oriented core, geological logs and high-resolution core scans from the reported holes;
• evaluating the continuity and geometry of mineralization in the central deposit, including the intervals in ZND0030;
• refining the interpreted oxide, mixed and sulfide boundaries using sequential copper analyses and core-scanning data;
• continuing drilling to test the mineralized system along strike and down-dip;
• advancing metallurgical test work on representative mineralized material; and
• progressing technical work for an updated Zonia Oxide Mineral Resource estimate targeted for Q4 2026.

The Company expects to continue reporting drill results as assays, QA/QC review and geological interpretation are completed.

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 ("QA/QC") procedures.

Samples are from HQ-diameter core. Core is scanned and logged by the Company's geology team before being cut. Half-core HQ samples are prepared for assay, and the remaining material is retained at site for future reference.

The Company's QA/QC program includes the insertion of certified reference materials, blanks and duplicate samples at regular intervals within the sample stream. The Company also conducts ongoing reviews of laboratory QA/QC performance to ensure analytical reliability and accuracy.

Assay samples were picked up directly from site by Skyline Assayers and Laboratories ("Skyline") and transported to Skyline's laboratory facility in Tucson, Arizona for preparation and analysis. Skyline is accredited and independent of the Company.

Sample preparation included drying, crushing, splitting and pulverizing prior to analysis. Copper assays were determined using Skyline's single-element assay method, consisting of three-acid digestion followed by atomic absorption spectroscopy (AAS) determination for total copper.

Significant intervals reported in this news release were calculated using a 0.10% CuT cut-off. All drill core is oriented where possible. Drill holes in the current program were drilled at inclinations of approximately -45 to -58 degrees and generally oriented towards the southeast, broadly orthogonal to the interpreted strike and dip of the mineralized system, associated foliation and the major bounding fault structures. Based on the current geological interpretation and drill geometry, intervals reported in this news release 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, Ph.D., P.Geo., 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 Corporation
Edge Copper Corporation is a copper-focused exploration and development company advancing its 100%-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 and a current Preliminary Economic Assessment, Zonia is a U.S. copper development project. Edge Copper is focused on resource definition, metallurgical test work and other technical studies to evaluate future development. For more information, visit www.edgecopper.com.

Forward Looking Statements
This news release contains forward-looking information within the meaning of applicable securities laws. Forward-looking information includes, without limitation, statements regarding the Company's current and planned perimeter, step-out and infill drilling; the interpretation and potential refinement of the structural model, deposit geometry, oxide copper envelope and oxide-sulfide boundary; the potential expansion of the Zonia mineralized system; the use of drilling results to support future Mineral Resource evaluation, potential resource classification changes and mining analysis; the scope and timing of additional infill drilling; the timing and objectives of sulfide-zone reporting and metallurgical test work; and the anticipated timing of an updated Mineral Resource estimate.

Forward-looking information is based on assumptions that management believes to be reasonable as of the date of this news release, including assumptions regarding assay turnaround times, drill performance, geological continuity, interpretation of drilling and scanning data, laboratory and metallurgical performance, availability of personnel and equipment, copper prices, financing, permitting and regulatory requirements, and the Company's ability to complete planned exploration and technical work.

Forward-looking information is subject to known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to differ materially from those expressed or implied, including risks related to exploration and development, uncertainty in geological interpretation and Mineral Resource estimates, metallurgical recovery, commodity prices, financing, permitting, title, environmental matters, availability of personnel and equipment, and general economic and market conditions.

Statements regarding potential resource conversion, expansion, deposit limits or improved geological definition are conceptual and forward-looking and do not constitute a new or updated Mineral Resource estimate. There is no certainty that the current program will result in an expanded Mineral Resource, a change in resource classification or support any revised production profile. Readers are cautioned not to place undue reliance on forward-looking information. Except as required by applicable securities laws, the Company undertakes no obligation to update or revise such information.

The PEA Design Pit referenced in the previous figures is based on the Company's current technical report for Zonia titled National Instrument 43-101 Revised Technical Report 2026 Preliminary Economic Assessment Yavapai County, Arizona, USA with a Report Date of April 7, 2026. The results of the Company's preliminary economic assessment ("PEA") are preliminary in nature and include Inferred Mineral Resources that are considered too speculative geologically to have economic considerations applied to them that would enable them to be categorized as Mineral Reserves. There is no certainty that the preliminary economic assessment will be realized. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.

APPENDIX A: Drill Hole Data

Table 1: Drill Hole Details 

Hole ID	Easting (ft)	Northing (ft)	Elevation (ft)	Azimuth (°)	Dip (°)	Total Depth (ft)
ZND0021	482759	1201853	4724	145	-45	876
ZND0030	483730	1202225	4560	135	-48	865
ZND0034	486009	1204192	4484	110	-45	804
ZND0038	486698	1204953	4449	135	-55	504
ZND0039	485975	1204319	4426	135	-48	696
ZND0040	486564	1205322	4434	129	-48	673
ZND0041	485603	1203775	4455	134	-48	695
ZND0060	484027	1203580	4620	135	-50	1961

Notes: Coordinates are in Arizona State Plane (EPSG:2223). Total depth is rounded to the nearest foot. Actual hole dips are reported in the table; drill orientations were designed to be approximately orthogonal to foliation and major bounding fault structures.

Table 2: Significant Intercept Table

Hole ID	From (ft)	To (ft)	Length (ft)	CuT%
ZND0021	379	565	186	0.33
ZND0030	0	140	140	0.45
including	20	100	80	0.63
ZND0030	400	740	340	0.30
including	410	575	165	0.40
ZND0034	0	465	465	0.26
including	105	265	160	0.33
ZND0038	7	339	332	0.15
ZND0039	2	625	623	0.23
including	195	320	125	0.34
ZND0040	10	494	484	0.16
ZND0041	0	540	540	0.22
including	105	175	70	0.36
ZND0060	48	98	50	0.17
ZND0060	553	800	248	0.30
including	598	754	156	0.37

Notes: From and To values are down-hole depths and are rounded to the nearest foot. Significant intervals were calculated using a 0.10% CuT cut-off. CuT means total copper. Reported intercepts are oxide copper mineralization, although some intervals may include minor mixed oxide-sulfide mineralization. The mixed oxide-sulfide transition zone at Zonia is generally narrow (see Figures 2 and 3). For the purposes of this news release, the interpreted base of oxide mineralization was determined visually by the Company's geological team, assisted by scanning data. Final modeling of the oxide copper boundary is expected to incorporate sequential copper analyses and additional geological modeling in future technical studies. All drill core is oriented where possible. Drill holes in the current program were drilled at inclinations of -45 to -58 degrees and generally oriented towards the southeast, orthogonal to the interpreted strike and dip of the mineralized system, associated foliation and the major bounding fault structures. Based on the current geological interpretation and drill geometry, intervals reported in this news release are interpreted to represent approximate true thicknesses. Samples are from HQ-diameter core. Core is scanned and logged by the Company's geology team before being cut. Half-core HQ samples are prepared for assay and the remaining material is retained at site for future reference. Each assay batch is submitted with duplicates, standards and blanks to monitor laboratory quality. Laboratory assays reported in this news release are derived exclusively from analytical testing completed by Skyline Assayers and Laboratories. 

SOURCE Edge Copper Corporation

For further information regarding Edge Copper: Patricia Fong, Chief Financial Officer, Telephone: [phone], Email: [email protected]