Comet Lithium Corporation — Proxy Solicitation & Information Statement 2026

Apr 23, 2026

April 23, 2026

Computershare

650 boulevard De Maisonneuve ouest,

7e étage

Montreal (Québec), H3A 3T2

www.computershare.com

To: All Canadian Securities Regulatory Authorities

Subject: COMET LITHIUM 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 : May 11, 2026
Record Date for Voting (if applicable) : May 11, 2026
Beneficial Ownership Determination Date : May 11, 2026
Meeting Date : June 15, 2026
Meeting Location (if available) : Montreal QC
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 No
NAA for Registered Holders No

Voting Security Details:

Description	CUSIP Number	ISIN
COMMON SHARES	20036Y101	CA20036Y1016

Sincerely,

Computershare

Agent for COMET LITHIUM CORPORATION