Edge Copper Reports Broad Infill Copper Intercepts as Zonia Program Transitions to Deposit-Extent Drilling

Edge Copper Corporation (EDCU) has released assay results from nine new diamond drill holes at its Zonia oxide copper deposit in Arizona. The company noted that all of these holes were infill or near-pit holes utilizing a 0.10% CuT cutoff.

Key intercepts from the drilling program include: - ZND0027: 697 ft @ 0.28% CuT from 191 ft, including 170 ft @ 0.47% CuT and 180 ft @ 0.37% CuT. - ZND0049: 544 ft @ 0.27% CuT from surface, including 199 ft @ 0.40% CuT. - ZND0023: 369 ft @ 0.22% CuT from surface, including 30 ft @ 0.30% CuT. - ZND0024: 304 ft @ 0.21% CuT from 436 ft, including 90 ft @ 0.28% CuT and 40 ft @ 0.33% CuT. - ZND0018: 78 ft @ 0.40% CuT from surface. - ZND0010: 237 ft @ 0.22% CuT; ZND0012: 284 ft @ 0.19% CuT; ZND0026: 518 ft @ 0.20% CuT (including smaller higher-grade zones).

Edge Copper stated it is transitioning to perimeter and step-out drilling. Sulfide zone assays and metallurgical test work are expected in late July, with a resource update targeted for the fourth quarter of 2026.

Edge Copper Corporation (EDCU) is a junior explorer that completed a preliminary economic assessment (PEA) on a historic resource. The share price rose from approximately $0.40 to over $1.00 on the back of PEA and drill program hype, before falling back to the financing price of approximately $0.58 as the market digested the reality of a marginal grade, capital-intensive project with a going-concern warning.

The stock chart shows a steady decline from the January 2026 peak to $0.56, with a brief bounce on earlier drill results on May 19, when the price moved from $0.69 to $0.78, followed by further retreat. This release is purely infill and does not alter the resource size or grade, the economics, or the development timeline. The transition to step-out drilling is not itself an assay result.

There is no game-changing drill intercept or material new data; the results simply confirm outcropping and near-surface oxide mineralisation that was already well known. Any positive impact is already captured in the PEA assumptions.

Edge Copper Corporation (TSX.V: EDCU) is a junior explorer focused on the 100%-owned Zonia Copper Project in Arizona, a past-producing heap leach SX/EW operation on private land. The company was formed through the acquisition of Zonia from World Copper in late 2025.

A Preliminary Economic Assessment (PEA) released in March 2026 outlined a 10-year open-pit heap leach operation producing 76 Mlbs of copper cathode per year at a C1 cash cost of $2.15/lb. The assessment reported an after-tax NPV (8%) of $488M and an internal rate of return (IRR) of 23.4% at a copper price of $4.60/lb. The resource estimate, comprising Indicated resources of 194 Mt at 0.25% Cu and Inferred resources of 86 Mt at 0.20% Cu, is based on historical drilling.

To upgrade and expand resources, a 53,000–54,000 ft drill program commenced in January 2026, with results being released in batches. The company has no revenue, relies on equity financing, and flagged a going-concern risk in its Q1 2026 MD&A. As of June 9 post-financing, cash was approximately US$20M, with zero debt and 167.4M shares outstanding.