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  • Insider Ownership

Insider Trading & Ownership of David C. Sienko

Location
Coeur D'alene, ID
Summary
The estimated net worth of David C. Sienko is at least $24,368,829 dollars as of 04 Mar 2026. David C. Sienko is the S. Vice President, GC & Secy. of HECLA MINING CO/DE/ and owns shares of HECLA MINING CO/DE/ (HL) stock worth about $18.24M. 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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Quick Takeaways

  • David C. Sienko has 2 issuer positions tracked on this page.
  • Estimated disclosed ownership value: $24,368,829.
  • Recent insider filing activity is available below.

What Changed

  • Largest disclosed position: HECLA MINING CO/DE/ ($18,240,684).
  • Past-year value change for that position: -$4,030,679.

Why This Matters

  • This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
  • You can cross-check role, issuer, and filing chronology directly against the SEC source.

Official SEC Source

Filed on Form 4

Insider ownership context is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Ownership of David C. Sienko

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
HL, HL-PB HECLA MINING CO/DE/ S. Vice President, GC & Secy. $18,240,684 -$4,030,679 -18% 02 Mar 2026
HL Hecla Ltd SR. VP & General Counsel $6,128,145 20 Aug 2024

Insider Transactions Reported by David C. Sienko:

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.

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