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Erdene Announces Q1 2024 Results and Provides Bayan Khundii GOLD Project Update

Financials

TSX: ERD | MSE: ERDN

www.erdene.com 1 [email protected]

ERDENE ANNOUNCES Q1 2024 RESULTS AND

PROVIDES BAYAN KHUNDII GOLD PROJECT UPDATE

Press Release

Halifax, Nova Scotia

2025.05.13

Erdene Resource Development Corp. (TSX:ERD; MSE:ERDN) ("Erdene" or the

"Company") is pleased to announce operating and financial results for the three months

ended March 31, 2024, and to provide an update on progress at its Bayan Khundii Gold

Project (“BK” or “Project”), being developed with Mongolian Mining Corporation (“MMC”).

This release should be read in conjunction with the Company’s Q1-2024 Condensed

Consolidated Interim Financial Statements and MD&A, available on the Company’s

website and SEDAR+.

Peter Akerley, Erdene’s President and CEO stated, “During the first quarter, Erdene and

MMC closed their Strategic Alliance and formally launched construction of the Bayan

Khundii Gold Project, one of the highest grade, open pit gold mines under development

globally. Bayan Khundii will be Mongolia’s largest primary gold producer when it reaches

full production, providing new opportunities for the Mongolian mining sector, increasing

the industry’s contribution to the national economy and creat ing long-term value for

Erdene shareholders.”

He continued, “Construction at Bayan Khundii is proceeding to schedule and budget with

approximately 15% of works complete at the end of the first quarter. There are now over

400 personnel on-site working safely towards first gold in Q2 2025.”

Mr. Akerley concluded, “During the first quarter we also launched our 2024 exploration

program, as we look to expand mineralization in the Khundii Minerals District (“KMD”),

located in an under-explored, world-class gold and copper belt. Ground-truthing of high-

potential drill targets at Dark Horse and Ulaan commenced in Q2 along with surface

exploration of Zuun Mod gold and copper targets and other regional exploration work.”

TSX: ERD | MSE: ERDN

www.erdene.com 2 [email protected]

Q1-2024 Highlights and Significant Subsequent Events:

Images: Bayan Khundii Construction Site – May 2024

Bayan Khundii Gold Project

• Announced formal construction decision for Bayan Khundii on January 15, 2024

- Mobilized for full construction during Q1 2024 with over 400 personnel now on-site

- Project is proceeding to budget and schedule – construction expected to be

substantially complete by the end of 2024, commissioning in Q1 2025 and first gold

production in Q2 2025

• Reached 15% construction progress at Bayan Khundii by the end of Q1 2024

- Achieved 1,000,000 hours construction effort without a lost-time incident

- Finished detailed design work and completed procurement of critical long -lead

equipment

- Commenced Process Plant structural steel erection

• Advanced community development and local employment stakeholder programs

- Local Cooperation Agreement in place to support 2024 local development

programs

- Recruitment and training of Bayan Khundii mine workforce well advanced, with 100

local residents completing mining equipment operator training

Khundii Minerals District Exploration

• Completed 2024 exploration program planning for the Khundii Minerals District

- Near-term focus on mine geology for Bayan Khundii and near -pit expansion

opportunities

- Planning completed for follow-up drilling at Zuun Mod to confirm resources in

advance of planned Preliminary Economic Assessment

• Field program commenced in early Q2 on high priority targets within the KMD, including

mapping and surface sampling to ground-truth drill targets

TSX: ERD | MSE: ERDN

www.erdene.com 3 [email protected]

Corporate

• Closed Strategic Alliance on January 23, 2024 to advance construction of BK Project

- MMC invested US$40 million for a 50% equity interest in EM, the company holding

the BK Project

- Erdene retains a 50% equity interest in EM as well as a 5% NSR royalty on

production from the Khundii District after the first 400,000 ounces of gold

production and 100% interest in Zuun Mod

• Secured BK Finance from strategic partner MMC

- Up to US$80 million shareholder loan to EM, the entity co-owned by Erdene and

MMC

- Five-year bullet maturity, bearing interest at 13.8%, payable in arrears

- Secured by Erdene’s interests in EM and preferential rights over Erdene’s

properties

• Recorded a net loss of $2,678,373 for the three months ended March 31, 2024,

compared to a net income of $5,405,927 for the three months ended March 31, 2023

- Exploration and evaluation expenses totaled $783,156 for the three months ended

March 31, 2024, compared to $66,827 for the same quarter in 2023, with the

increase from the comparative prior year period primarily due to the timing of

annual staff performance bonuses and stock option grants, which were incurred in

the current quarter compared to the second quarter of 2023

- Corporate and administrative expenses totaled $2,777,588 for the three months

ended March 31, 2024, compared to $580,111 for three months ended March 31,

2023, with the change from the prior year comparative quarter resulting from the

recognition of financing costs following the close of the BK project loan in Q1 2024

as well as the timing of annual staff performance bonuses and stock option grants,

which were incurred in the current quarter versus Q2 2023

- Non-cash gain on dilution of investment in associate of $ 1,070,737 with the

issuance of equity in EM to MMC on January 23, 2024, compared to a gain of

$6,544,863 in the first quarter of 2023, following the loss of control of EM due to

the Strategic Alliance with MMC

- Loss from investment in associate of $257,016 for the three months ended March

31, 2024, compared to a loss from investment in associate of $564,206 for the

three months ended March 31, 2023, with the period over period change primarily

due to a 50% reduction in Erdene’s ownership of EM during the current period with

the close of the Strategic Alliance.

Qualified Person

Peter Dalton, P.Geo. (Nova Scotia), Senior Geologist for Erdene, is the Qualified Person

as that term is defined in National Instrument 43-101 and has reviewed and approved the

technical information contained in this news release.

TSX: ERD | MSE: ERDN

www.erdene.com 4 [email protected]

About Erdene

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

the acquisition, exploration, and development of precious and base metals in

underexplored and highly prospective Mongolia. The Company has interests in three

mining licenses and an exploration license in Southwest Mongolia, where exploration

success has led to the discovery and definition of the Khundii Gold District. Erdene

Resource Development Corp. is listed on the Toronto and the Mongolian stock exchanges.

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

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

other statements that are not statements of fact. 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 o bligation 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-/