Insider · CIK 0001481905
David C Sienko
Files at HL (HECLA MINING CO/DE/). First filing Feb 26, 2025, latest Dec 19, 2025.
In brief
David C Sienko files SEC Form 4 as officer at HL (HECLA MINING CO/DE/). Since Feb 26, 2025, David C Sienko has reported 0 open-market buys worth $0 and 2 open-market sells worth $4.1M, the latest filed on Dec 19, 2025.
A track record needs three past buys with six months of prices behind them; David C Sienko has 0, so none is measured yet.
The newest scored trade: sold $4.0M of HL on Dec 17, 2025, filed Dec 19, 2025, scored 53 (moderate). In the last 12 months: 0 buys worth $0 and 1 sell worth $4.0M.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
HL: HECLA MINING CO/DE/
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 53Moderate | HECLA MINING CO/DE/ | $4.0M 207,553 shares | -19% | +328% from low0% from high | |
| 40Moderate | HECLA MINING CO/DE/ | $113k 21,826 shares | -2% | - |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Dec 17, 2025 | HL HECLA MINING CO/DE/ | 207,553 0.03% of outstanding | $4.0M | Dec 17, 2025 | none |
| Feb 25, 2025 | HL Hecla Mining Company | 22,000 0.00% of outstanding | $115k | Feb 26, 2025 | none |
Transactions
Every row this insider has filed, 24 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 22, 2026 | HL HECLA MINING CO/DE/ | FTax withholding Common Stock | -23,973 | $15.98 | $383k | 934,511 | Jun 24, 2026 |
| Jun 22, 2026 | HL HECLA MINING CO/DE/ | AGrant or award Common Stock | +22,724 | $15.98 | $363k | 934,511 | Jun 24, 2026 |
| Jun 22, 2026 | HL HECLA MINING CO/DE/ | JOther Common Stockindirect: Held in 401(k) Plan | +17,354 | $0.00 | $0 | 17,354 | Jun 24, 2026 |
| Jun 22, 2026 | HL HECLA MINING CO/DE/ | AGrant or award Performance rightsderivative | +22,724 | $0.00 | $0 | 934,511 | Jun 24, 2026 |
| Mar 2, 2026 | HL HECLA MINING CO/DE/ | MOption exercise Common Stock | +23,881 | $0.00 | $0 | 777,268 | Mar 4, 2026 |
| Mar 2, 2026 | HL HECLA MINING CO/DE/ | FTax withholding Common Stock | -7,294 | $24.63 | $180k | 769,974 | Mar 4, 2026 |
| Mar 2, 2026 | HL HECLA MINING CO/DE/ | MOption exercise Performance rightsderivative | +23,881 | $0.00 | $0 | 115,634 | Mar 4, 2026 |
| Dec 17, 2025 | HL HECLA MINING CO/DE/ | SOpen-market sale Common Stock | -207,553 | $19.42 | $4.0M | 906,370 | Dec 19, 2025 |
| Dec 18, 2025 | HL HECLA MINING CO/DE/ | JOther Common Stockindirect: 401(k) Plan | +16,287 | $0.00 | $0 | 16,287 | Dec 19, 2025 |
| Jun 23, 2025 | HL HECLA MINING CO/DE/ | FTax withholding Common Stock | -13,768 | $5.82 | $80k | 1,113,923 | Jul 1, 2025 |
| Jun 23, 2025 | HL HECLA MINING CO/DE/ | AGrant or award Common Stock | +60,137 | $5.82 | $350k | 1,113,923 | Jul 1, 2025 |
| Jun 23, 2025 | HL HECLA MINING CO/DE/ | JOther Common Stockindirect: 401(k) Plan | +15,258 | $0.00 | $0 | 15,258 | Jul 1, 2025 |
| Jun 23, 2025 | HL HECLA MINING CO/DE/ | AGrant or award Performance rightsderivative | +60,137 | $0.00 | $0 | 1,113,923 | Jul 1, 2025 |
| Jun 23, 2025 | HL HECLA MINING CO/DE/ | FTax withholding Common Stock | -13,768 | $5.82 | $80k | 1,115,621 | Jun 26, 2025 |
| Jun 23, 2025 | HL HECLA MINING CO/DE/ | AGrant or award Common Stock | +60,137 | $5.82 | $350k | 1,115,621 | Jun 26, 2025 |
| Jun 23, 2025 | HL HECLA MINING CO/DE/ | JOther Common Stockindirect: 401(k) Plan | +15,258 | $0.00 | $0 | 15,258 | Jun 26, 2025 |
| Jun 23, 2025 | HL HECLA MINING CO/DE/ | AGrant or award Performance rightsderivative | +60,137 | $0.00 | $0 | 1,115,621 | Jun 26, 2025 |
| Jun 23, 2025 | HL HECLA MINING CO/DE/ | FTax withholding Common Stock | -13,768 | $5.82 | $80k | 1,115,621 | Jun 25, 2025 |
| Jun 23, 2025 | HL HECLA MINING CO/DE/ | AGrant or award Common Stock | +60,137 | $5.82 | $350k | 1,115,621 | Jun 25, 2025 |
| Jun 23, 2025 | HL HECLA MINING CO/DE/ | JOther Common Stockindirect: 401(k) Plan | +15,258 | $0.00 | $0 | 15,258 | Jun 25, 2025 |
| Jun 23, 2025 | HL HECLA MINING CO/DE/ | AGrant or award Performance rightsderivative | +60,137 | $0.00 | $0 | 1,115,621 | Jun 25, 2025 |
| Feb 24, 2025 | HL HECLA MINING CO/DE/ | AGrant or award Common Stock | +45,501 | $0.00 | $0 | 936,397 | Feb 26, 2025 |
| Feb 26, 2025 | HL HECLA MINING CO/DE/ | SOpen-market sale Common Stock | -21,826 | $5.18 | $113k | 914,571 | Feb 26, 2025 |
| Feb 24, 2025 | HL HECLA MINING CO/DE/ | JOther Common Stockindirect: Held in 401(k) Plan | +15,258 | $0.00 | $0 | 15,285 | Feb 26, 2025 |
Questions about David C Sienko
Answered from the filings on this page, as of the latest one.
Is David C Sienko buying or selling?
In the last 12 months David C Sienko reported 0 open-market buys worth $0 and 1 open-market sell worth $4.0M on SEC Form 4; the latest was sold $4.0M of HL on Dec 17, 2025. Grants, option exercises and tax withholding are not counted.
How did David C Sienko's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and David C Sienko has 0.
Where does David C Sienko file Form 4?
David C Sienko has filed Form 4 at HL (HECLA MINING CO/DE/) as Sr. VP, GC & Secretary. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.