Orosur Mining Regulatory News (OMI)

Orosur Mining Inc - Employee Options Exercise

London, September 23rd, 2022. Orosur Mining Inc. ("Orosur" or the "Company") (TSX/AIM:OMI), announces that it has issued 40,000 common shares of no par value ("Common Shares"), following the exercise of options by a former employee as follows:

C$ 0.05 40,000

Application has been made for the 40,000 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 29 September 2022.

No current members of the board, or Company executives have exercised any options.

Following Admission and for the purposes of the Disclosure Guidance and Transparency Rules, the Company will have 188,560,300 Common Shares in issue. Shareholders may 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 to their interest in, the issued share capital of the Company.

Following Admission, the Company will have 11,499,999 options outstanding.

For further information, please contact:

Orosur Mining Inc

Louis Castro, Chairman,

Brad George, CEO

info@orosur.ca

Tel: +1 (778) 373-0100

SP Angel Corporate Finance LLP - Nomad & Joint Broker

Jeff Keating / Caroline Rowe

Tel: +44 (0) 20 3 470 0470

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.

About Orosur Mining Inc.

Orosur Mining Inc. (TSX.V: OMI; AIM: OMI) is a minerals explorer and developer focused on identifying and advancing projects in South America. The Company operates in Colombia, Argentina and Brazil.