Orosur Mining Inc. Announces Pepas West Expanding

• Date: May 13, 2026
• Headline: Orosur Mining Inc. Announces Pepas West Expanding
• Core Event: Exploration drilling at the Anza Project in Colombia continues to yield high-grade gold intercepts.
• Key Intercepts: Hole PEP090 returned 23.45m @ 2.98g/t Au, stepping out 30m NW of previous holes to demonstrate strike extension potential. Other holes (PEP085, PEP087) also returned significant grades.
• Operational Status: Drilling rig moved south of Pepas but scheduled to return to Pepas West in several weeks. APTA prospect drilling reached target zone despite ground conditions.
• Context: This follows the Maiden Resource Estimate (MRE) announced in February 2026, which declared ~219,000 ounces of gold at Pepas.

• Expectation vs. Reality: The news is consistent with the trajectory set by the February 2026 MRE announcement and subsequent drilling plans. It confirms that the resource model is robust enough to support extension drilling.
• Materiality: While positive, this is classified as Routine - Positive rather than Material because it does not present a new total resource estimate or a fundamental change in project economics (e.g., Feasibility Study release). The market has already priced in the MRE from February.
• Progression: Historical news shows a clear progression: High-grade drilling (May 2025) -> Financing (Oct 2025) -> Ownership Consolidation (Nov 2025) -> Maiden Resource Estimate (Feb 2026) -> Extension Drilling (May 2026). This step validates the previous MRE but does not yet unlock significant value without a Feasibility Study.
• Price Reaction Context: The stock has declined significantly from its January high ($0.72) to current levels ($0.37), suggesting the market is waiting for definitive economic studies rather than incremental drilling results.

• Company: Orosur Mining Inc. (TSX-V/AIM listed).
• Flagship Project: Anza Project, Colombia.
• Location: Mid-Cauca gold belt, west of Medellín.
• Size: Approximately 330km² within exploration licenses.
• Ownership: 100% owned by Orosur via subsidiaries Minera Anzá and Minera Monte Aguila (acquired from Newmont/Agnico Eagle JV partners in Nov 2024).
• Key Deposits: Pepas (Resource defined), APTA (Drilling ongoing), El Cedro (Soil sampling/Targeting).