David C Sienko
CIK 1481905 · S. Vice President, GC & Secy. · last filed 2026-03-04
David C Sienko is a S. Vice President, GC & Secy. who has filed 48 SEC Form 4 insider transactions across 2 companies since 2010. The most recent filing, for HLpB, was dated Mar 4, 2026. Across all open-market trades the lifetime net is −$5.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $50.0M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$50.05M
2
48
-$5.49M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| HLpB | S. Vice President, GC & Secy. | 786,261 | $63.65 | $50.05M | -$5.49M | 46 | 2026-03-04 |
| HECLA MINING CO/DE/ (HLpC) Delisted | Vice President & Gen. Counsel | 27,498 | — | — | $0 | 1 | 2010-05-06 |
Recent Filings
48 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-03-04 | HLpB | Mixed | +16,587 | -$179.7K | EDGAR |
| 2025-12-19 | HLpB | Mixed | −191,266 | -$4.03M | EDGAR |
| 2025-07-01 | HLpB | Mixed | +61,627 | $269.9K | EDGAR |
| 2025-06-26 | HLpB | Mixed | +61,627 | $269.9K | EDGAR |
| 2025-06-25 | HLpB | Mixed | +61,627 | $269.9K | EDGAR |
| 2025-02-26 | HLpB | Mixed | +38,933 | -$113.1K | EDGAR |
| 2024-08-22 | HLpB | Mixed | +18,443 | $30.6K | EDGAR |
| 2024-08-21 | — | Mixed | +18,443 | $30.6K | |
| 2024-06-25 | HLpB | Mixed | +58,310 | $241.3K | EDGAR |
| 2024-03-18 | HLpB | Mixed | +24,389 | $0 | EDGAR |