LONDON - Orosur Mining Inc. ('Orosur' or 'the Company') (TSXV: OMI) (AIM: OMI) announces the granting of an aggregate of 4,120,000 stock options ('Options') to directors, officers and employees, upon recommendation of the Company's Remuneration Committee and in line with the stock option plan as approved by shareholders at the Annual General Meeting held in December 2021.

ANNUAL STOCK OPTION GRANT

Officers and employees were granted a total of 1,720,000 Options and 2,400,000 Options were granted to Directors pursuant to the annual grant. The Options shall vest in two equal parts: the first part immediately and the second part on the anniversary on the date of this grant.

All Options are exercisable at a price of Cdn$0.22 per common share, on or before March 11th, 2027. The exercise price is at a 22% premium to the closing price of Orosur's shares on March 10th, 2022 on the TSX Venture Exchange.

Further to this issue of Options, the total number of shares under option is 11,639,999 which represents 6.2% of the non-diluted issued share capital of the Company.

Contact:

Louis Castro

Tel: +1 (778) 373-0100

Email: info@orosur.ca

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 currently operates in Colombia, Argentina and Brazil.

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