Mr. Brad George reports

OROSUR MINING INC. ANNOUNCES 43-101 TECHNICAL REPORT FOR ITS ANZA PROJECT

Orosur Mining Inc. has filed a technical report compliant with National Instrument 43-101, Standards of Disclosure for Mineral Projects, in support of the company's 100-per-cent-owned Anza project in Colombia, including its maiden mineral resource estimate for the Pepas deposit. The effective date of the report is Jan. 16, 2026, and the issue date is March 25, 2026. The report supports the disclosures made by the company in its announcement of Feb. 10, 2026.

The technical report can be found on the company's website and by reviewing its profile on SEDAR+.

About Orosur Mining Inc.

Orosur Mining is a minerals explorer and developer currently operating in Colombia and Argentina.