X0609 4 2026-06-22 0 0000719413 HECLA MINING CO/DE/ HL 0001481905 Sienko David C false 6500 N. MINERAL DRIVE, SUITE 200 COEUR D'ALENE ID 83815 0 1 0 0 Sr. VP, GC & Secretary 0 Common Stock 2026-06-22 4 F 0 23973 15.98 D 934511 D Common Stock 2026-06-22 4 A 0 22724 15.98 A 934511 D Common Stock 2026-06-22 4 J 0 17354 0 A 17354 I Held in 401(k) Plan Performance rights 0 2026-06-22 4 A 0 22724 0 A 2029-01-01 2029-01-01 Common Stock 22724 934511 D Mr. Sienko was awarded 35,350 restricted stock units on June 21, 2023, 60,479 restricted stock units on June 21, 2024, 5,902 restricted stock units on August 20, 2024, and 60,137 restricted stock units on June 23, 2025. One-third of those restricted stock units vested on June 22, 2026. To cover his tax liability on those vested units, Hecla Mining Company withheld 23,973 shares. Consists of 684,053 shares held directly, 17,354 shares in 401(k)Plan, 148,432 performance-based rights, and 84,672 unvested restricted stock units. Award of restricted stock units that vest as follows: 7,575 shares on June 21, 2027, 7,575 shares on June 21, 2028, and 7,574 shares on June 21, 2029. See footnote 2. Held as 1,451.345 units in Mr. Sienko's 401(k) account under the Hecla Mining Company Capital Accumulation Plan and estimated to be 17,354 shares. Mr. Sienko was awarded performance rights representing the contingent right to receive between $363,125 and $726,250 worth of Hecla Mining Company common stock based on Hecla Mining Company's total Shareholder Return performance over the 3-year period (January 1, 2026 to December 31, 2028) relative to our peers. Examples of the potential grant of shares to Mr. Sienko under this plan are as follows: 100th percentile rank among peers = maximum award at 200% of target ($726,250 in stock); 50th percentile rank among peers = target award at grant value ($363,125 in stock), and 0 percentile rank among peers = threshold award below 25% target. See footnote 2. Tami D. Whitman, Attorney-in-Fact for David C. Sienko 2026-06-24