LONDON - Orosur Mining Inc. ('Orosur' or the 'Company') (TSX: OMI) (AIM: OMI), announces that it has issued 2,876,670 common shares of no par value ('Common Shares'), representing 1.8% of the Company's current issued share capital, following the exercise of options by a number of its employees and former employees as follows.

Exercise Price Options

C$ 0.105 600,000

C$ 0.235 728,334

C$ 0.24 650,000

C$ 0.11 640,001

C$ 0.05 258,335

Application has been made for the 2,876,670 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 November 9, 2020.

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 163,154,342 Common Shares in issue.

Contact:

Louis Castro

Tel: +1 (778) 373-0100

Email: info@orosur.ca

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulation ('MAR'). Upon the publication of this announcement via Regulatory Information Service, this inside information is now considered to be in the public domain.

About Orosur Mining Inc.

Orosur Mining Inc. (TSX: OMI; AIM: OMI) is a precious metals developer and explorer focused on identifying and advancing gold projects in South America. The Company operates in Colombia and Uruguay.

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