Hecla Mining — May 5, 2026 release

  EXPLORATION AND PRE-DEVELOPMENT _____________________________________________________________________________________________________________   Investment and Strategy During Q1 2026, the Company invested $4.6 million in exploration and corporate development (including $0.3 million in pre-development) activities, focused on high-impact discovery drilling at Midas in Nevada and Keno Hill in Yukon, and resource expansion programs at producing assets. Exploration activity is planned to ramp up in the second and third quarters with core drills expected to increase from the 13 currently deployed to 19.   Producing Asset Resource Definition 7   Underground definition drilling programs at Greens Creek, Keno Hill, and Lucky Friday continue to define and expand mineralization near resource boundaries, converting Inferred resources and identifying reserve extension opportunities.   Greens Creek Definition drilling at Greens Creek continued to delineate and step out from existing resources using three underground drilling rigs. Assay results have been received from the East, West, SWB, and Gallagher zones. Notable intercepts include 18.2 oz/ton silver, 0.07 oz/ton gold, 5.2% zinc, and 2.9% lead over 7.5 feet in the West Zone, and 34.9 oz/ton silver, 0.14 oz/ton gold, 6.2% zinc, and 3.1% lead over 5.6 feet in the SWB Zone.   Keno Hill At Keno Hill, one definition drilling rig continued to define and expand mineralization in the Arctic Zone at the Bermingham Mine. A drillhole into the Bermingham Vein returned 106.6 oz/ton silver, 0.7% zinc, and 1.5% lead over 2.4 feet, upgrading the local resource.   Lucky Friday Definition drilling has recommenced on the Intermediate veins at Lucky Friday, confirming mineable grade and widths in the 80 and 90 veins. Drilling highlights include