Mr. Peter Akerley reports

ERDENE TO ANNOUNCE Q3 2025 RESULTS ON NOVEMBER 4, 2025

Erdene Resource Development Corp. will release its third quarter 2025 results on Nov. 4, 2025, after market close. On Nov. 5, 2025, at 10 a.m. ET, management will host a conference call and webcast to discuss these results. Details to participate are as follows:

Canada and United States toll-free:  +1-800-717-1738

Outside of Canada and U.S.:  +1-289-514-5100

Webcast:  on-line

Investors may send in questions for management ahead of the event to info@erdene.com.

About Erdene Resource Development Corp.

Erdene Resource Development is a Canada-based resource company producing gold at the high-grade, low-cost Bayan Khundii gold mine in underexplored and highly prospective Mongolia.