X0508 4 2026-03-02 0 0000719413 HECLA MINING CO/DE/ HL 0001481905 Sienko David C 6500 N. MINERAL DRIVE, SUITE 200 COEUR D'ALENE ID 83815 0 1 0 0 S. Vice President, GC & Secy. 0 Common Stock 2026-03-02 4 M 0 23881 0 A 777268 D Common Stock 2026-03-02 4 F 0 7294 24.63 D 769974 D Performance rights 0 2026-03-02 4 M 0 23881 0 A 2025-12-31 2025-12-31 Common Stock 23881 115634 D In June 2023, Mr. Sienko was awarded performance rights representing the contingent right to receive between $60,300 and $241,200 worth of Hecla Mining Company common stock based on Hecla Mining Company's Total shareholder Return p4erformanc over the 3-year period (January 1, 2023 to December 31, 2025) based on the following p4ercentile rank within Hecla's pe4er group companies: 100th percentile rank among peers = maximum award at 200% of target ($241,200 in stock); 40th to 60th percentile rank among peers = target at grant value ($120,600 in stock); and 25th percentile rank among peers = threshold award at 50% of target ($60,300 in stock). In reporting the number of performance rights at the time of the award, Mr. Sienko assumed a target (i.e., $120,600 in stock), with the common stock valued at the closing price on the day of the award ($5.05), and therefore reported an award of 23,881 performance rights. Based on Hecla Mining Company's total shareholder return ranking, Mr. Sienko's award value was 100% and he therefore received 23,881 shares in settlement of the award (with the shares valued at the $5.05 closing price on June 21, 2023). Consists of outstanding performance rights. See footnotes (1) and (2). Shares received upon settlement of performance rights awarded in June 2023. Consists of 661,634 shares held directly, and 115,634 unvested restricted stock units. Shares withheld for tax liability on 23,881 performance rights that vested. Consists of 654,340 shares held directly, and 115,634 unvested restricted stock units. Tami D. Whitman, Attorney-in-Fact for David C. Sienko 2026-03-04