Hecla Mining — Nov 5, 2025 release

Cash cost per silver ounce (after by-product credits) and AISC per silver ounce (after by-product credits) guidance also remains unchanged at ($7.00)-($5.75) and ($1.00)-$0.50 respectively. 3,4 • At Lucky Friday, guidance for total costs of sales (includes depreciation) is revised up to $175 million from the prior $165 million. Cash cost guidance is raised to $7.50-$8.50 from the prior $7.00-$7.50 (after by-product credits), per silver ounce, and AISC to $21.00-$22.50 from $20.00-$21.50 (after by-product credits), per silver ounce. 3,4   Casa Berardi guidance for total cost of sales (includes depreciation) is revised up to $205 million from $197 million on expectations for costs related to the extension of underground mining and higher depreciation expense in 2025. Cash cost and AISC (both after by-product credits) per gold ounce guidance is reiterated at $1,700-$1,800 and 1,850-$2,000 respectively. 3,4     Total costs of Sales (million)     Cash cost, after by-product credits, per silver/gold ounce 3   AISC, after by-product credits, per produced silver/gold ounce 4 Greens Creek     289.0     ($7.00) - ($5.75)   ($1.00) - $0.50 Lucky Friday     175.0     $7.50 - $8.50   $21.00 - $22.50 Total Silver     464.0     ($1.75) - ($0.75)   $11.00 - $13.00 Casa Berardi     205.0     $1,700 - $1,800   $1,850 - $2,000   2025 Capital and Exploration Guidance Reiterated   Total capital (growth and sustaining) expenditure guidance