Opus One Gold Corporation — Proxy Solicitation & Information Statement 2022

Jul 18, 2022

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July 18, 2022

1500 Robert-Bourassa Blvd. 7th Floor Montreal QC, H3A 3S8 www.computershare.com

To: All Canadian Securities Regulatory Authorities

Subject: OPUS ONE GOLD CORPORATION

Dear Sir/Madam:

We advise of the following with respect to the upcoming Meeting of Security Holders for the subject Issuer:

Meeting Type : Annual and Special Meeting Record Date for Notice of Meeting : August 12, 2022 Record Date for Voting (if applicable) : August 12, 2022 Beneficial Ownership Determination Date : August 12, 2022 Meeting Date : September 16, 2022 Meeting Location (if available) : Virtual Meeting Issuer sending proxy related materials directly to NOBO: Yes Issuer paying for delivery to OBO: Yes

Notice and Access (NAA) Requirements:

NAA for Beneficial Holders NAA for Registered Holders

Voting Security Details:

Description CUSIP Number ISIN COMMON SHARES 683881106 CA6838811066

Sincerely,

Computershare

Agent for OPUS ONE GOLD CORPORATION