Gold Mountain Mining Corp. — Proxy Solicitation & Information Statement 2025

Jul 29, 2025

ENDEAVOR TRUST

ENDEAVOR TRUST CORPORATION

702 – 777 Hornby Street

Vancouver, BC, V6Z 1S4

admin@EndeavorTrust.com

www.EndeavorTrust.com

Gold Mountain Mining Corp.

Via SEDAR+

July 28, 2025

TO ALL APPLICABLE REGULATORS AND EXCHANGES

RE: Gold Mountain Mining Corp. (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 & Special Meeting
2	Record Date for Notice of Meeting	August 8, 2025
3	Record Date for Voting (If Applicable)	August 8, 2025
4	Beneficial Ownership Determination Date	August 8, 2025
5	Meeting Date	September 15, 2025
6	Meeting Location	TBA
7	Voting Securities Details
8	Description (Class)	Common
9	ISIN / CUSIP	CA38065L1058 / 38065L105
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	S - All & Special Materials

Regards,

Endeavor Trust Corporation

Agent for Gold Mountain Mining Corp.