Endeavour Silver Corp. (NYSE: EXK) (TSX: EDR) reports second quarter 2026 production of 1,943,955 silver ounces, 10,474 gold oz, and in combination with base metals, a silver equivalent ⁽¹⁾ production of 3.4 million oz.  Year-to-date production was 3,819,329 silver oz and 22,215 gold oz for a total silver equivalent production of 6.8 million ounces. All dollar amounts are in US dollars ($).

“During the second quarter, we continued to advance our operational priorities across the portfolio, with Terronera making steady progress through plant optimization, Kolpa delivering a meaningful step-up in throughput following its plant expansion, and Pitarrilla feasibility study advancing,” commented Dan Dickson, Chief Executive Officer. “While Terronera’s production remains in line with our planned first-half ramp-up profile, the continued improvement in Terronera recoveries and the strong contribution from Kolpa position us well as we work to build momentum through the remainder of 2026.”

Q2 2026 Production Overview

• Terronera Continues Plant Optimization: Throughput was consistent with plan in Q2, while metal recoveries improved through continued process refinement.
• Kolpa Expansion Increases Throughput: A significant portion of the plant expansion was commissioned at the end of Q1 2026, resulting in throughput of 233,408 tonnes in Q2 2026, a substantial increase compared to previous quarters. Recoveries remained stable through Q2 2026, while grades experienced a slight decrease as mining development in higher-grade areas catches up with the new plant capacity. As a result, Q2 2026 silver production was 19% higher than Q1 2026 and silver equivalent production was 26% higher.
• Guanaceví Maintains Stable Throughput: Throughput and recoveries were slightly higher than Q2 2025, offset by lower silver and gold grades. As a result, silver production was below plan while gold production remains in line with plan.
• Metal Sales and Inventories: Sold 2,086,717 silver oz and 10,823 gold oz during the second quarter. A total of 268,522 silver oz and 900 gold oz of bullion inventory and 41,771 silver ounces and 399 gold ounces in concentrate inventory are held as at June 30, 2026.

Q2 2026 Operations

Consolidated silver production was 1,943,955 oz in Q2 2026, slightly below plan, and 31% higher than 1,483,736 oz produced in Q2 2025. Higher production is attributed to the additional oz from Kolpa (note that Q2 2025 included 2 months of production from Kolpa following acquisition on May 1, 2025) and 608,347 oz from Terronera which achieved commercial production on October 1, 2025. These contributions were partially offset by the sale of Bolañitos which was finalized on January 15, 2026. Silver production at Guanaceví was 30% lower than Q2 2025, predominantly due to 35% lower silver grades partially offset by 4% higher throughput.

Consolidated gold production was 10,474 oz in Q2 2026, 35% higher than 7,755 oz produced in Q2 2025. Higher production is primarily attributable to the addition of 7,666 oz from Terronera, partially offset by the sale of Bolañitos. Gold production at Guanacevi was 21% lower than Q2 2025, predominantly due to the 27% lower gold grade partially offset by 4% higher throughput.

Terronera’s production in Q2 2026 was in line with plan and mining operations are scheduled to shift into higher-grade areas in Q3 2026. Terronera recoveries averaged 85.4% for silver and 72.6% for gold, with silver slightly above Q1 2026 and in line with plan. Recoveries are expected to continue to improve with higher silver grades and continued refinement of the plant processes. Ore grades of 126.2 grams per tonne (gpt) for silver and 1.87 gpt of gold were in line with plan for the quarter.

Guanaceví’s throughput was 4% higher than Q2 2025 and in line with plan. Grades were lower than the prior year due to mining lower-grade areas of the deposit as part of the mining sequence as well as higher than planned dilution. Supplies of local third-party mill feed continued to supplement Guanaceví production, amounting to 30% of quarterly throughput.

Kolpa’s throughput in Q2 2026 was 233,408 tonnes producing 633,288 oz of silver, compared to 171,727 tonnes producing 530,118 oz of silver in Q1 2026. A significant portion of the plant expansion to 2,500 tonnes per day (tpd) was completed in March 2026; during the commissioning and ramp-up, the plant processed a higher proportion of lower grade open pit material. The processed material in Q2 2026 averaged grades of 93.3 g/t silver, 2.80% lead, 2.03% zinc and 0.24% copper. Despite the slightly lower grades, due to the significant increase in throughput, production of silver exceeded plan while production of base metals remained in line with plan. Management continues to evaluate capital improvement initiatives, including the expansion of the tailings storage facility with the installation of a dry-stack tailings filter press, additional permitted areas and lifts, as well as upgrades to camp accommodations aimed at attracting and retaining skilled miners.

Consolidated Production Highlights for the Three and Six Months Ended June 30, 2026

¹ Silver equivalent for 2026 is calculated using 90 silver oz to 1 gold oz; 45 silver oz to 1 lead tonne; 61 silver oz to 1 zinc tonne; 238 silver oz to 1 copper tonne. Silver equivalent for 2025 is calculated using 80 silver oz to 1 gold oz; 60 silver oz to 1 lead tonne; 85 silver oz to 1 zinc tonne; 300 silver oz to 1 copper tonne ratios.
Bolañitos mine was sold January 15, 2026, and is included in the consolidated results above.
Totals may not add up due to rounding

Production Tables for the Three Months Ended June 30, 2026, by mine

Totals may not add up due to rounding

Production Tables for the Six Months Ended June 30, 2026, by mine

Bolañitos mine was sold January 15, 2026, and is not included in the breakdown above.
Totals may not add up due to rounding

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.

Qualified Person

Dale Mah, P.Geo., Vice President Corporate Development, a qualified person under NI 43-101, has approved the scientific and technical information related to operations matters in this news release.