Dundee Sustainable Technologies Inc. — Proxy Solicitation & Information Statement 2026

Apr 2, 2026

April 02, 2026

Computershare

800 - 324 8th Avenue SW

Calgary AB, T2P 2Z2

www.computershare.com

To: All Canadian Securities Regulatory Authorities

Subject: CANADIAN CRITICAL MINERALS INC.

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 : April 27, 2026
Record Date for Voting (if applicable) : April 27, 2026
Beneficial Ownership Determination Date : April 27, 2026
Meeting Date : June 15, 2026
Meeting Location (if available) : Calgary, AB
Issuer sending proxy related materials directly to NOBO: No
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	13561D105	CA13561D1050

Sincerely,

Computershare

Agent for CANADIAN CRITICAL MINERALS INC.