Orosur Mining Announces Pepas West Expanding

About this update from Orosur Mining Inc.

Pepas West Expanding Ongoing drilling at Pepas West continues to show positive results: PEP085, 16.1m @ 2.68g/t Au PEP087, 21.7m @ 1.42g/t Au PEP088, 9.8m @ 1.41g/t Au PEP090, 23.45m @ 2.98g/t Au Hole PEP090 stepped out 30m north of previous holes, demonstrating extension potential. Rig currently drilling south of Pepas, will return to Pepas West in several weeks. Hole MAP-106 at APTA now in the target zone. LONDON, UK / ACCESS Newswire / May 13, 2026 / Orosur Mining Inc. ("Orosur" or the "Company") (TSXV:OMI) (AIM:OMI), is pleased to announce an update on the progress of exploration activities at the Company's exploration project at Anzá in Colombia ("Anzá" or the "Project"). Anzá - Colombia The Anzá Project in Colombia comprises a number of granted exploration titles and applications totalling roughly 330km2, within the Mid-Cauca gold belt, west of the city of Medellín. These titles and applications are owned by two Colombian companies, Minera Anzá, and Minera Monte Aguila, both wholly owned subsidiaries of the Company. The latter of these was acquired by Orosur in November 2024 from the Company's previous JV partners, Newmont Mining and Agnico Eagle Mines. Orosur thus owns 100% of the Anzá Project. Since acquiring 100% control, the Company has focussed its attention on three prospects: Pepas - a shallow, high-grade ore body of gold mineralisation for which the Company has calculated a Mineral Resource Estimate ("MRE"), announced February 10th 2026. APTA - a high-grade body of gold mineralisation that has to date seen almost 39,000m of historical drilling, and at which drilling has recently recommenced. El Cedro - a cluster of gold porphyry intrusions in the south of the Project area that are currently subject to mapping and sampling programs, with a view to potentially being drilled as soon as targets can be finalised and logistics arranged. Figure 1. Anzá Project Pepas The Company's primary focus since reassuming control of the Project in late 2024, was to explore the immediate area of Pepas, ultimately leading to the publication of a maiden MRE for the Pepas gold deposit on February 10th, 2026. This MRE was based upon drilling undertaken by the Company and its previous JV partner from 2022 to late 2025. Results from the final hole included in the MRE, PEP074, were announced on January 8th, 2026. Following completion of the MRE drillout in late 2025, ...

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