Mr. Brad George reports

OROSUR MINING INC ANNOUNCES NOTICE OF AGM AND INVESTOR Q&A SESSION

Copies of Orosur Mining Inc.'s notice of annual general meeting (AGM), including the management information circular and proxy forms, have been posted to shareholders. Copies are also available on the website at: https://www.orosur.ca

The AGM will be held on 19th December 2023 at 10am EST at the offices of Fasken Martineau DuMoulin LLP, 333 Bay Street, Suite 2400, Toronto, Ontario, Canada, M5H 2T6. Shareholders are strongly encouraged by the Board to vote by proxy by completing their form of proxy in accordance with the instructions on the proxy form.

Notification of Investor Q&A Session

Orosur is also pleased to announce that following the AGM on 19th December 2023, Brad George, the Company's Chief Executive Officer and Louis Castro, Chairman, will be holding a live Investor Q&A session via the Investor Meet Company platform on at 11.30am EST (4.30pm GMT (UK local time)).

The presentation is open to all existing and potential shareholders. Questions can be submitted pre-event via your Investor Meet Company dashboard up until 9am GMT (4 am EST) the day before the meeting (18th December) or at any time during the live presentation.

Investors can sign up to Investor Meet Company for free and add to meet the Company via:

https://www.investormeetcompany.com/orosur-mining-inc/register-investor

Investors who already follow Orosur on the Investor Meet Company platform will automatically be invited.

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

Orosur Mining IncLouis Castro, Chairman,Brad George, CEOinfo@orosur.caTel: +1 (778) 373-0100

SP Angel Corporate Finance LLP - Nomad & BrokerJeff Keating / Kasia BrzozowskaTel: +44 (0) 20 3 470 0470

Turner Pope Investments (TPI) Ltd - Joint BrokerAndy Thacker/James PopeTel: +44 (0)20 3657 0050

Flagstaff CommunicationsTim ThompsonMark EdwardsFergus Mellonorosur@flagstaffcomms.com Tel: +44 (0)207 129 1474

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014 ('MAR') which has been incorporated into UK law by the European Union (Withdrawal) Act 2018. Upon the publication of this announcement via Regulatory Information Service ('RIS'), this inside information is now considered to be in the public domain.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

About Orosur Mining Inc.

Orosur Mining Inc. (AIM: OMI; TSX-V: OMI) is a minerals explorer and developer currently operating in Colombia, Argentina, Nigeria and Brazil.