Hecla Mining — May 1, 2025 release

  Outlook Revised Production guidance for 2025 at Greens Creek is maintained at 8.1-8.8 million ounces of silver, 44.0-48.0 thousand ounces of gold, or 18.0-19.5 million silver equivalent ounces when factoring in all metals (silver, gold, lead, zinc and copper). Greens Creek's cost outlook has been lowered, maintaining cost of sales guidance at $289 million (includes depreciation) but lowering cash cost guidance to $0.25-$0.75 from the prior $2.00-$2.50 (after by-product credits), per silver ounce, and AISC to $6.50-$7.25 from $8.75-$9.50 (after by-product credits), per silver ounce. 3,4 Capital investment guidance is unchanged at $48-$51 million in sustaining capital and $10-$12 million in growth capital. Capital investment at Greens Creek is expected to increase in the second and third quarters (relative to the first quarter) due to the seasonal construction period. The Company expects the Greens Creek operation to have 3-6 days of planned maintenance in the second quarter, which is the historical norm for quarterly maintenance downtime at Greens Creek. In approximately mid-June, the mine expects to shift to self-generated power while Alaska Electric Light and Power, the utility company supplying power to Greens Creek, goes offline for a planned 8-week maintenance shutdown, which will add costs to the operation of Greens Creek during this period as self-generated power is more costly than purchased power from the utility.   Please refer to guidance section of the release for production, cost, and capital guidance for 2025.   7   Lucky Friday Mine - Idaho