Exercise of Warrants

London, 11 December, 2024, Orosur Mining Inc. ("Orosur" or "the Company") (AIM/TSXV: OMI), a minerals explorer and developer with projects in Colombia, Argentina and Nigeria, advises that, following an exercise of warrants at an exercise price of US$0.0494 (approximately 3.697p) each, the Company has issued 899,280 new common shares of no par value each ("Common Shares") for a total consideration of US$44,424.

Application has been made for the 899,280 Common Shares, which rank pari passu with the existing Common Shares in issue, to be admitted to trading on AIM ("Admission"). It is expected that Admission will become effective and dealings will occur at 8:00am UK time on or around 16 December 2024.

Following Admission, the Company's new issued share capital will comprise 236,519,703 Common Shares. When calculating voting rights, shareholders should use this figure as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change in their interest in, the share capital of the Company under the FCA's Disclosure and Transparency Rules.