Orosur Mining Inc Announces Extension of Pepas West

Orosur Mining Inc. has released drill results for six new holes, designated PEP100 through PEP105, at the Pepas West area of its Anzá project in Colombia. With the exception of PEP100, which returned 6m @ 0.65 g/t Au from 18.15m, all intercepts began at the surface and delineate a flat-lying, high-grade oxide gold zone. The strongest result came from hole PEP103, which intersected 10.20m @ 5.77 g/t Au from surface, including a higher-grade interval of 2.45m @ 22.3 g/t Au.

To rapidly define volume and grade in support of near-term production feasibility, the company plans to trial auger drilling. The CEO highlighted the presence of "cheap ounces," noting that the grade remains consistent despite the complex weathered and transported nature of the local geology.

Orosur Mining Inc. is advancing the Pepas deposit toward feasibility and permitting. Pepas West serves as an extension of the main deposit, which already hosts a NI 43-101 indicated resource of 201,000 oz (plus 18,000 oz inferred) at 5.46 g/t. The new intercepts add shallow oxide ounces that could be mined as part of, or adjacent to, the open pit, potentially improving economics via low strip ratio and free-dig material. However, the grades and thicknesses are moderate, and the incremental tonnage is not yet quantified.

The market was already aware of high-grade Pepas West from earlier discoveries in April 2026 and received mixed follow-up in July 2026. Today’s results represent a better batch, with the highest gram-metre so far from Pepas West (PEP103). Still, the overall grade x width is not a step change from prior PEP090 (23.45 m @ 2.98 g/t = 70 g·m) or the discovery PEP083 (14.45 m @ 8.27 g/t = 119 g·m). This serves as confirmation of a trend rather than a new discovery.

For a junior explorer with a defined resource, the results are encouraging. The going-concern flag and reliance on external financing remain, so any positive news helps maintain equity access.

Orosur Mining Inc. is a gold explorer primarily focused on its 100%-owned Anzá Project in Colombia’s Mid-Cauca belt. The project hosts the Pepas deposit, which carries a maiden resource of 200 koz Indicated and 18 koz Inferred, alongside the APTA epithermal prospect and the El Cedro porphyry target. The company also holds the 100%-owned El Pantano epithermal gold-silver project in Argentina.

The company’s near-term goal is to advance Pepas through feasibility and permitting while building a pipeline of additional discoveries. As a pre-revenue explorer with no current revenue, Orosur relies on equity raises and option or warrant exercises for funding. Cash on hand as of 28 February 2026 stood at $13.7 million, with working capital of $9.0 million. The company has explicitly highlighted going concern risk.

Shares outstanding number approximately 396 million. A recent private placement of C$20 million at C$0.34 per share provided additional runway.