David C Sienko insider trades: Hecla Mining Co/De/ (HL) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where David reports to the SEC
Open-market buys and sales
7 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Dec 17, 2025 | HL | ↓ Sell | 207,553 | $19.42 | $4.0M | Direct | Dec 19, 2025 (2d) |
| Feb 26, 2025 | HL | ↓ Sell | 21,826 | $5.18 | $113K | Direct | Feb 26, 2025 (0d) |
| Jun 25, 2024 | HL | ↓ Sell | 14,559 | $4.91 | $71K | Direct | Jun 25, 2024 (0d) |
| Jun 17, 2021 | HL | ↓ Sell | 70,000 | $7.99 | $559K | Direct | Jun 21, 2021 (4d) |
| Jun 17, 2021 | HL | ↓ Sell | 22,719 | $7.97 | $181K | By 401(k) Plan | Jun 21, 2021 (4d) |
| Aug 13, 2020 | HL | ↓ Sell | 75,000 | $6.01 | $450K | Direct | Aug 14, 2020 (1d) |
| Aug 26, 2016 | HL | ↓ Sell | 13,722 | $5.85 | $80K | By 401(k) Plan | Aug 30, 2016 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other HL insiders
Open-market trades in the last 12 months
About David C Sienko's insider trades
David C Sienko is Sr. VP, GC & Secretary at Hecla Mining Co/De/ (HL). Since Aug 26, 2016, David has reported no open-market purchases and 7 sales worth $5.5M on SEC Form 4. In the last 12 months: 1 sale ($4.0M).
Their filings also include shares withheld for taxes (29 filings), grants and awards (29 filings), other transactions (27 filings), option exercises (4 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every HL insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.