Erdene Enters into Automatic Securities Purchase Plan

TSX: ERD | MSE: ERDN | OTCQX: ERDCF

www.erdene.com 1 [email protected]

ERDENE ENTERS INTO AUTOMATIC SECURITIES PURCHASE PLAN

Press Release

Halifax, Nova Scotia

2026.09.09

Erdene Resource Development Corp. (TSX:ERD; MSE:ERDN ; OTCQX: ERDCF)

("Erdene" or the "Company") is pleased to announce that it has entered into an

automatic securities purchase plan (“ASPP”) in connection with its previously announced

normal course issuer bid ("NCIB"), under which it may purchase up to an aggregate

4,900,000 common shares of the Company ("Common Shares") for cancellation.

Once effective, the ASPP will allow for the purchase of Common Shares under the NCIB

at times when Erdene normally would not be active in the market due to applicable

regulatory restrictions or internal trading blackout periods. Before the commencement of

any internal trading blackout period, Erdene may instruct its designated broker to make

purchases of Common Shares under the NCIB during the blackout period in accordance

with the terms of the ASPP. Such purchases will be determined by the broker in its sole

discretion based on parameters established by Erdene prior to commencement of the

applicable blackout period in accordance with the terms of the ASPP and applicable TSX

rules. Outside of these blackout periods, Common Shares may be purchased by Erdene

at its discretion under the NCIB. The ASPP constitutes an "automatic securities purchase

plan" under applicable Canadian securities laws and has been pre-cleared by the Toronto

Stock Exchange.

The Company is not obligated to purchase any specific number of Common Shares under

the NCIB. The timing and extent of any purchases will depend on market conditions and

other corporate considerations, as determined by management. The Company may

suspend or terminate the NCIB at any time.

About Erdene

Erdene Resource Development Corp. is a Canada-based resource company producing

gold at the high-grade, low-cost Bayan Khundii Gold Mine in underexplored and highly

prospective Mongolia. The Company has interests in a portfolio of precious and base

metal projects near the Bayan Khundii Gold Mine in the Khundii Minerals District, which

provides a robust organic growth pipeline. Erdene Resource Development Corp. is listed

on the Toronto (“ERD”) and the Mongolian stock (“ERDN”) exchanges and OTCQX

Market (“ERDCF”). Further information is available at www.erdene.com. Important

information may be disseminated exclusively via the website; investors should consult the

site to access this information.

Forward-Looking Statements

Certain information regarding Erdene contained herein may constitute forward-looking

statements within the meaning of applicable securities laws. Forward-looking statements

TSX: ERD | MSE: ERDN | OTCQX: ERDCF

www.erdene.com 2 [email protected]

may include estimates, plans, expectations, opinions, forecasts, projections, guidance, or

other statements that are not statements of fact , including statements regarding the

commencement and duration of the NCIB and purchases that may be made under the

NCIB. Although Erdene believes that the expectations reflected in such forward-looking

statements are reasonable, it can give no assurance that such expectations will prove to

have been correct. Erdene cautions that actual performance will be affected by a number

of factors, most of which are beyond its control, and that future events and results may

vary substantially from what Erdene currently foresees. Factors that could cause actual

results to differ materially from those in forward-looking statements include the ability to

obtain required third party approvals, market prices, exploitation, and exploration results,

continued availability of capital and financing and general economic, market or business

conditions. The forward-looking statements are expressly qualified in their entirety by this

cautionary statement. The information contained herein is stated as of the current date

and is subject to change after that date. The Company does not assume the obligation to

revise or update these forward-looking statements, except as may be required under

applicable securities laws.

NO REGULATORY AUTHORITY HAS APPROVED OR DISAPPROVED THE

CONTENTS OF THIS RELEASE

Erdene Contact Information

Peter C. Akerley, President and CEO, or

Robert Jenkins, CFO

Phone: (902) 423-6419

Email: [email protected]

Twitter: https://twitter.com/ErdeneRes

Facebook: https://www.facebook.com/ErdeneResource

LinkedIn: https://www.linkedin.com/company/erdene-resource-development-corp-/