West Vault Mining Inc. — AGM Information 2023

Apr 26, 2023

510 Burrard St, 3rd Floor Vancouver BC, V6C 3B9 www.computershare.com

Date: April 25, 2023

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To: All Canadian Securities Regulatory Authorities Subject: WEST VAULT MINING INC. (AMENDED SEE THE HIGHLIGHTED)

Dear Sir/Madam:

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

Meeting Type : Annual General Meeting Record Date for Notice of Meeting : May 08, 2023 Record Date for Voting (if applicable) : May 08, 2023 Beneficial Ownership Determination Date : May 08, 2023 Meeting Date : June 22, 2023 Meeting Location (if available) : Vancouver, BC Issuer sending proxy related materials directly to NOBO: Yes Issuer paying for delivery to OBO: No

Notice and Access (NAA) Requirements:

NAA for Beneficial Holders Yes Beneficial Holders Stratification Criteria: Not Applicable NAA for Registered Holders Yes Registered Holders Stratification Criteria: Not Applicable

Voting Security Details:

Description COMMON CLASS

CUSIP Number ISIN 95640X103 CA95640X1033

Sincerely,

Computershare

Agent for WEST VAULT MINING INC.