National Storage Mechanism | Additional information

Orosur Mining Inc

("Orosur" or the "Company")

New Corporate Investor Presentation

London, October 16th 2025 . Orosur Mining Inc (TSXV/AIM: OMI), the mineral explorer and developer with current operations in Columbia, Argentina and Nigeria, is pleased to announce that following an Investor Presentation via the Investor Meet Company platform given on 15^th October, the presentation can be viewed on the Company's website using the following link: https://www.orosur.ca/investors/presentations/

For further information visit www.orosur.ca,follow on X @orosurm or contact:

Orosur Mining Inc.

Louis Castro, Executive Chairman,

Brad George, CEO

[email protected]

Tel: +1 (778) 373-0100

SP Angel Corporate Finance LLP - Nomad & Joint Broker

Jeff Keating / Jen Clarke / Devik Mehta

Tel: +44 (0 )20 3470 0470

Turner Pope Investments (TPI) Ltd - Joint Broker

Andy Thacker/James Pope
Tel: +44 (0)20 3657 0050

Flagstaff Strategic and Investor Communications

Tim Thompson
Mark Edwards
Fergus Mellon

[email protected]

Tel: +44 (0)207 129 1474

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