144 0002040167 XXXXXXXX LIVE 0000719413 HECLA MINING CO/DE/ 001-08491 6500 N MINERAL DRIVE SUITE 200 NONE COEUR D'ALENE ID 83815-9408 2087694100 Hecla Mining Co Pre-2005 SERP & Post-2004 SERP Hecla Mining Co Pre-2005 SERP & Post-2004 SERP Common Stock Royal Bank (RBS)

1025 W. Georgia St. Vancouver A1 V6E 3N9

1200000 9168000.00 669983628 08/14/2025 NYSE Common Stock 10/12/2023 Contribution to Supplemental Excess Retirement Plan (SERP) Hecla Mining Company N 1200000 10/12/2023 Contribution of Shares to SERP Y Starting on August 14, 2025 and continuing over approximately 30 days and ending September 14, 2025, the plan expects to sell 1,200,000 shares of common stock of Hecla Mining Company. 08/14/2025 David C. Sienko, Sr. VP, General Counsel & Secy.