Employee Options Exercise

Orosur Mining Inc - Employee Options Exercise

London, November 4, 2020. Orosur Mining Inc. ("Orosur" or the "Company") (TSX/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:

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. 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 3,223,314 options outstanding.

For further information, please contact:

Orosur Mining Inc

Louis Castro, Chairman,

Brad George, CEO

[email protected]

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 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.