Hecla Mining — Aug 4, 2026 release

Silver cash cost of ($8.10) per ounce and AISC of $6.07 per ounce (both after by-product credits and excluding Keno Hill, which has not yet achieved commercial production). 2,3,5 o Safety: Consolidated TRIFR of 1.57, down from 2.07 in the prior quarter. 1   o Production and cost guidance: Consolidated silver production is expected to be 15.1-16.1 million ounces revised from 15.1-16.5 million ounces, with lower Keno outlook partly offset by improved outlooks for Greens Creek and Lucky Friday. Consolidated silver cash cost and AISC guidance lowered on outperformance in 1H26 compared to plan. 2,3 See Guidance section for more details. • Individual Mine Performance: o Greens Creek: Produced nearly 2.1 million ounces of silver and over 14 thousand ounces of gold. Costs applicable to sales of $50 million, with silver cash cost of ($17.11) per ounce and AISC of ($10.71) per ounce (both after by-product credits). 2,3,5 o Lucky Friday: Record silver production of 1.5 million ounces. Costs applicable to sales of $35 million, with silver cash cost of $3.95 per ounce and AISC of $17.08 per ounce (both after by-product credits). 2,3,5 The surface cooling project is 88% complete and remains on track for completion in September. o Keno Hill: Produced 0.6 million ounces of silver in the second quarter after working through a lower-grade zone. Subsequent to quarter end, the Company received authorization for construction of the Phase 2 West extension of its dry stack tailings facility. o Growth pipeline: Preliminary work on the Greens Creek pyrite concen