Insider Trading & Ownership of David C. Sienko

Location: Coeur D'alene, ID
Summary: The estimated net worth of David C. Sienko is at least $23.9M dollars as of 19 Dec 2025. David C. Sienko is the Sr. VP, GC & Secretary of HECLA MINING CO/DE/ and owns shares of HECLA MINING CO/DE/ (HL) stock worth about $17.8M. David C. Sienko is the SR. VP & General Counsel of Hecla Ltd and owns shares of Hecla Ltd stock worth about $6.13M.
Signature: Tami D. Whitman, Attorney-in-Fact for David C. Sienko
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Ownership of David C. Sienko

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
HL, HL-PB	HECLA MINING CO/DE/	Sr. VP, GC & Secretary	$17.8M	-$4.14M	-18.9%	17 Dec 2025
HL	Hecla Ltd	SR. VP & General Counsel	$6.13M			20 Aug 2024

Sym	Company	Class	Transaction	%	Value $	* Price $	Shares	Shares After	Date	Ownership

* An asterisk sign (*) next to the price indicates that the price is likely invalid.