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EDR.TO ·

Endeavour Silver Reports an Illegal Blockade and Suspension of Operations at its Terronera Mine

Mine Development & Operations

1394-5686-4546.6

Endeavour Silver Reports an Illegal Blockade and Suspension of

Operations at its Terronera Mine

VANCOUVER, British Columbia, August 16, 2026 -- Endeavour Silver Corp. (“Endeavour” or the

“Company”) (NYSE: EXK; TSX: EDR) reports that operations at its Terronera mine in Jalisco, Mexico

have been temporarily suspended since August 12th as the result of an illegal blockade by members of

the nearby Ejido community regarding their concerns over road maintenance, assistance with medical

services and communications, control and access to water supply and increased financial assistance.

To date, the blockade has remained peaceful, orderly and respectful .

The site remains staffed with a reduced workforce to support safety and security protocols and

continues to be accessible for maintenance activities. The Company continues active discussions with

Ejido community leaders to resolve the matter and resume full operations as soon as possible. The

Company has the ability to pursue legal action and will exercise all available legal remedies if this matter

is prolonged.

About Endeavour Silver – Endeavour is a mid-tier silver producer with three operating mines in Mexico

and Peru and a robust pipeline of exploration projects across Mexico, Chile, and the United States. With

a proven track record of discovery, development, and responsible mining, Endeavour is driving organic

growth and creating lasting value on its path to becoming a leading senior silver producer.

Contact Information

Allison Pettit

Vice President, Investor Relations

Email: [email protected]

Website: www.edrsilver.com

Cautionary Note Regarding Forward-Looking Statements

This news release contains “forward-looking statements” within the meaning of the United States private

securities litigation reform act of 1995 and “forward-looking information” within the meaning of applicable

Canadian securities legislation. Such forward-looking statements and information herein include but are

not limited to statements regarding ongoing discussions with community leaders ; the exercise of legal

remedies; continued accessibility at Terronera; the resolution of the illegal blockade and resumption of

full operations at Terronera and related timing ; Endeavour’s ability to drive organic growth and create

lasting value, and the timing and results of various activities. The Company does not intend to and does

not assume any obligation to update such forward -looking statements or information, other than as

required by applicable law.

Forward-looking statements or information involve known and unknown risks, uncertainties and other

factors that may cause the actual results, level of activity, production levels, performance or

achievements of Endeavour and its operations to be materially different from those expressed or implied

by such statements. Such factors include but are not limited to unexpected changes in production and

costs guidance; the ongoing effects of inflation and supply chain issues on mine economics; fluctuations

in the prices of silver and gold; fluctuations in the currency markets (particularly the Mexican peso,

Peruvian sol, Canadian dollar, Chilean peso, and U.S. dollar); fluctuations in interest rates; effects of

inflation; changes in national and local governments, legislation, taxation, controls, regulations and

political or economic developments in Canada, Peru and Me xico; operating or technical difficulties in

1394-5686-4546.6

mineral exploration, development and mining activities; risks and hazards of mineral exploration,

development and mining (including, but not limited to, environmental hazards, industrial accidents,

unusual or unexpected geological conditions, pressures, cave-ins and flooding); inadequate insurance,

or inability to obtain insurance; availability of and costs associated with mining inputs and labour ; the

speculative nature of mineral exploration and development; diminishing quantities or grades of mineral

reserves as properties are mined; risks in obtaining necessary licenses and permits; and challenges to

the Company’s title to properties; as well a s those factors described in the section “risk factors”

contained in the Company’s most recent form 40F/Annual Information Form filed with the S.E.C. and

Canadian securities regulatory authorities.

Forward-looking statements are based on assumptions management believes to be reasonable,

including but not limited to: the continued operation of the Company’s mining operations, no material

adverse change in the market price of commodities, forecasted mine economics, mining operations will

operate and the mining products will be completed in accordance with management’s expectations and

achieve their stated production outcomes, and such other assumptions and factors as set out herein.

Although the Company has attempted to identify important factors that could cause actual results to

differ materially from those contained in forward-looking statements or information, there may be other

factors that cause results to be materially different from those anticipated, described, estimated,

assessed or intended. There can be no assurance that any forward -looking statements or info rmation

will prove to be accurate as actual results and future events could differ materially from those anticipated

in such statements or information. Accordingly, readers should not place undue reliance on forward -

looking statements or information.