Ejido Blockade Halts Operations at Endeavour Silver’s Terronera Mine — Its Primary Silver Producer Since October 2025

Endeavour Silver Corp. (NYSE: EXK), a mid-tier silver mining company operating in Mexico and Peru, disclosed on August 16, 2026 that an illegal blockade by members of the nearby Ejido community has suspended operations at its Terronera mine in Jalisco, Mexico since August 12. The blockade covers community concerns around road maintenance, medical services, communications, water supply access, and financial assistance. The company describes the blockade as peaceful, orderly, and respectful to date. Endeavour continues discussions with Ejido leaders while preparing legal remedies if the dispute does not resolve.

Terronera Is the Cornerstone of Endeavour’s Growth Strategy

The operational significance of this blockade is considerable. Terronera only reached commercial production in October 2025 after years of development and capital investment, and it serves as the primary engine of Endeavour’s production growth ambitions. The mine sits in a mountainous region of Jalisco roughly 160 km west of Guadalajara and processes low-sulphidation epithermal veins for silver and gold extraction through a 2,000-tonne-per-day central flotation plant. Metal recoveries in 2025 averaged 82.6% for silver and 72.5% for gold. With a projected ten-year operational life and a central role in Endeavour’s organic growth pipeline, Terronera is not a peripheral asset. Every day of suspended production carries direct consequence for the company’s near-term output and unit cost profile.

Community Relations Risk Is Not New to Terronera or to Endeavour

This is not the first time external factors have interrupted Terronera’s ramp-up. In February 2026, a separate security event and a Code Red mandate in Jalisco required civilians to shelter in place, forcing Endeavour to pause operations from Sunday evening through Wednesday before supply routes were confirmed secure. The company also worked through electrical disruptions in late 2025 tied to temporary diesel generator operation before transitioning to a more stable liquefied natural gas power arrangement. Ejido community relations are a structural feature of Mexican mining operations rather than a one-off surprise: Ejidos hold collective land rights that can intersect with mine access, water use, and road infrastructure in ways that create ongoing negotiation requirements. Endeavour has described its community engagement as proactive, but the blockade demonstrates the execution risk that remains even at a well-developed project.

A Reduced Workforce Holds the Site While Talks Continue

Endeavour has not abandoned the site. A reduced workforce remains present to maintain safety and security protocols, and the mine continues to be accessible for maintenance activities. The company says it is pursuing active dialogue with Ejido leaders while also preparing to exercise legal remedies and consider all available options if the dispute persists. The August 2026 timeframe adds production pressure: Endeavour’s current three-mine portfolio comprises Terronera and Guanacevi in Mexico and Kolpa in Peru, following the earlier sale of Bolañitos. Full-year 2026 guidance calls for 14.6 to 15.6 million silver equivalent ounces across all three mines. Any extended Terronera suspension would compress that profile at the company’s highest-value asset. Endeavour also closed a US$25 million revolving term credit facility on August 5, 2026, giving it additional liquidity as it works through the disruption.

Strategic Investment Summary

• Blockade Disclosed: Endeavour Silver (NYSE: EXK) disclosed on August 16, 2026 that an illegal Ejido community blockade has suspended operations at its Terronera mine in Jalisco, Mexico since August 12, citing road maintenance, water access, medical services, and financial assistance concerns.
• Strategic Importance: Terronera reached commercial production in October 2025 and serves as Endeavour’s primary underground silver and gold mine in Mexico and the centrepiece of its organic growth pipeline, within a current portfolio comprising Terronera and Guanacevi in Mexico and Kolpa in Peru.
• Site Status: A reduced workforce remains on site to maintain safety and security; the mine remains accessible for maintenance while Endeavour pursues dialogue with Ejido leaders and prepares legal remedies if the dispute continues.
• Prior Disruptions: Terronera faced a separate security and Code Red shelter-in-place disruption in February 2026, and electrical instability during the late 2025 ramp-up; community and operational risk is a recurring feature of the mine’s early production history.
• Recent Credit Facility: Endeavour closed a US$25 million revolving term credit facility on August 5, 2026, providing additional liquidity as it navigates the production disruption.
• Resolution Timeline Unknown: No timeline for resolution has been provided; each additional day of suspension carries direct impact on Endeavour’s full-year silver and gold production profile and unit cost structure at its most significant operating asset.

Find out more about the latest operational updates and financial reports at the Endeavour Silver investor portal.