Metalsource Mining Inc. — Proxy Solicitation & Information Statement 2025

Oct 9, 2025

ENDEAVOR TRUST

ENDEAVOR TRUST CORPORATION

702 – 777 Hornby Street

Vancouver, BC, V6Z 1S4

admin@EndeavorTrust.com

www.EndeavorTrust.com

Metalsource Mining Inc.

Via SEDAR+

October 9, 2025

TO ALL APPLICABLE REGULATORS AND EXCHANGES

RE: Metalsource Mining Inc. (the "Issuer") Notice of Meeting and Record Dates

We advise the following with respect to the Issuer's upcoming Meeting of Security Holders:

1	Meeting Type	Annual General Meeting
2	Record Date for Notice of Meeting	November 3, 2025
3	Record Date for Voting (If Applicable)	November 3, 2025
4	Beneficial Ownership Determination Date	November 3, 2025
5	Meeting Date	December 9, 2025
6	Meeting Location	TBA
7	Voting Securities Details
8	Description (Class)	Common
9	ISIN / CUSIP	CA59132M1086 / 59132M108
10	Issuer sending proxy related materials directly to Non-Objecting Beneficial Owners (NOBOs)	No
11	Issuer paying for mailing to Objecting Beneficial Owners (OBOs)	No
12	Notice and Access
	Beneficial Holders	No
	Registered Holders	No
	Stratification Level	Not Applicable
13	Material Selection	A - All

Regards,

Endeavor Trust Corporation

Agent for Metalsource Mining Inc.