Saturday, September 26, 2026
MiningNewsTerminal
Saturday, September 26, 2026 Admin

ERD.TO ·

Erdene Announces Q2 2026 Results

Financials

TSX: ERD | MSE: ERDN | OTCQX: ERDCF

www.erdene.com 1 [email protected]

ERDENE ANNOUNCES Q2 2026 RESULTS

Press Release

Halifax, Nova Scotia

2026.08.14

Q2 2026 Highlights:

• Bayan Khundii Gold Mine p roduced and sold 11,709 ounces gold at an average

price of US$4,493/oz for US$53M in gross revenues

• Operated Bayan Khundii at 94% of target throughput and recovered 96% of gold,

exceeding expectations

• Advanced preliminary economic assessment for Zuun Mod molybdenum-copper

porphyry project with results expected in mid-H2 2026

• Completed maiden drill program at Tereg Uul near Oyu Tolgo i intersecting

anomalous gold and silver along a 1.5 kilometre mineralized structure

Erdene Resource Development Corp. (TSX:ERD; MSE:ERDN ; OTCQ X: ER DCF)

("Erdene" or the "Company") is pleased to announce operating and financial results for

the three and six months ended June 30, 2026, and to provide an update on the Bayan

Khundii Gold Mine (“BK”), operated by Erdene Mongol LLC (“EM”), the Company’s joint

venture with Mongolian Mining Corporation (“MMC”) . This release should be read in

conjunction with the Company’s Q2 2026 Financial Statements , MD&A, and Annual

Information Form, available on the Company’s website and SEDAR+. All dollars are

thousands of Canadian dollars, unless otherwise noted.

Peter Akerley, Erdene’s President and CEO stated, “We delivered another quarter of

improved performance, achieving gold production of 11,709 ounces at Bayan Khundii, a

37% increase over the previous quarter, driven by st ronger mining performance and

continued steady operation of the process plant. The average processed ore grade rose

25% during the quarter, reflecting enhanced ore control and mine -to-mill practices that

significantly reduced dilution and ore loss.”

Mr. Akerley continued, “In parallel, Erdene made strong progress at our wholly-controlled

precious and base metal projects in the Khundii and Oyu Tolgoi districts. Technical work

is well advanced on the Zuun Mod preliminary economic assessment, expected to be

released in mid-H2 2026 with geophysics and drilling planned later this year to test the

copper potential of the Khuvyn Khar project on the license . At the Tereg Uul property ,

adjacent to the Oyu Tolgoi copper -gold system , our maiden drill program confirmed

anomalous gold and silver mineralization along a 1.5 kilometre trend at the Web prospect,

while deeper drilling intersected native copper and anomalous gold . Based on these

encouraging results, we have extended our option on this property for another year.”

TSX: ERD | MSE: ERDN | OTCQX: ERDCF

www.erdene.com 2 [email protected]

Q2 2026 Highlights and Significant Subsequent Events:

Bayan Khundii Gold Mine – 50% Economic Interest

• Produced and sold 11,709 ounces gold and 3,317 ounces silver in Q2 2026

− Represents a 37% increase over Q1 2026

− EM realized weighted average prices of US$4,493/oz and US$72/oz, respectively,

generating total revenue of US$53 million (C$75 million)

− Total cost of revenue of US$24 million (C$33 million)

• Processed 153 thousand tonnes of ore, averaging 1,682 tonnes per day

− Quarterly average feed grade of 2.4 g/t gold, approximately 25% higher than in Q1

2026

− Gold recoveries of 96%, above planned recoveries of 93%

• Prepared mineral resource estimates for Erdene Mongol’s gold projects

− Updates to BK, Dark Horse and Altan Nar deposits to incorporate depletion at BK,

recent exploration at DH and the impact of current gold prices

− Maiden mineral resource estimate for the Ulaan deposit immediately west of BK

• Delivered on community development and local stakeholder programs

− Over 40% of site personnel are residents of Bayankhongor province and 13% of

direct EM employees are female, as at the end of the quarter

− Supported renewal and expansion of public facilities for Shinejinst community

events

− Engaged local contractors on mine site services and environmental stewardship

programs

TSX: ERD | MSE: ERDN | OTCQX: ERDCF

www.erdene.com 3 [email protected]

Exploration & Development

• Progressed Zuun Mod Preliminary Economic Assessment ("PEA"), planned

for completion in mid H2-2026

− Mine planning, marketing and metallurgical test work is largely complete

− Contract has been executed for deep geophysics exploration program

commencing in late Q3

• Drilled 11 holes totaling 2, 710 metres in maiden program at Tereg Uul, about 10km

south of Oyu-Tolgoi

− Eight shallow holes in the Web prospect intersected anomalous gold (over 0.1 g/t

Au and up to 1g/t and up to 15g/t Ag) along a 1.5 kilometre mineralized structure

− Testing of deeper geophysical target intersected a coal seam within 150 metres of

surface and traces of native copper mineralization

− Extended Tereg Uul option agreement in July with US$400,000 option payment

Corporate

• Recorded net income of $9,993 for the three months ended June 30, 2026, compared

to net loss of $4,122 for the three months ended June 30, 2025

− Income from investment in associate, representing the Company’s joint venture

interest in the income of EM, totaled $11,201 for the three months ended June 30,

2026, compared to a loss of $2,995 for the three months ended June 30, 2025,

due to production f rom Bayan Khundii in the current year quarter, while the mine

was under construction during the prior year quarter

− Exploration and evaluation expenses totaled $726 for the three months ended

June 30, 2026, compared to $514 for the three months ended June 30, 2025, with

the increase compared to the prior year quarter attributable to exploration at the

Tereg Uul property optioned in July 2025

− Corporate and administrative expenses totaled $1,617 for the three months ended

June 30, 2026, compared to $1,488 for three months ended June 30, 2025, with

the change compared to the prior year quarter primarily due to increased investor

relations and regulatory costs

• Launched Normal Course Issuer Bid on June 30, 2026

− Allows the Company to purchase up to 4,900,000 common shares for

cancellation, representing approximately 10% of the public float

− Repurchased and cancelled 94,400 shares at an average price of $5.21 per share

to date

TSX: ERD | MSE: ERDN | OTCQX: ERDCF

www.erdene.com 4 [email protected]

Results Conference Call

Management will host a webcast and conference call to discuss these results and current

business initiatives on Monday, August 17, 202 6, at 10:00 AM Eastern Time. The

webcast will be accessible at the following link: HERE

A replay of the webcast will be available at the same link for one year after the event.

The dial-in numbers for the conference call are as follows:

• North America (toll free): 1-800-717-1738

• Overseas or local (Toronto): 1-289-514-5100

Qualified Person

Jon Lyons, FAusIMM, Chief Development Officer for Erdene, is the Qualified Person as

that term is defined in National Instrument 43-101 and oversees the Bayan Khundii Mine

operations for the Corporation and has reviewed and approved the technical information

related to the BK Mine contained in this news release.

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 oversees the Corporation’s

exploration programs and has reviewed and approved the technical information related

to exploration contained in this news release.

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 (“ERDC F”). 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 ca utions 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 m aterially 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

TSX: ERD | MSE: ERDN | OTCQX: ERDCF

www.erdene.com 5 [email protected]

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-/