Duke John D
SEC CIK 2071593 · EDGAR
BoughtSold
Companies
| Ticker | Company | Title | Holding | Bought | Sold | Trades | First | Last |
|---|---|---|---|---|---|---|---|---|
| HBIO | HARVARD BIOSCIENCE INC | CEO, Dir | 180.0K | $25.1K | — | 3 | 2025-08-08 | 2026-03-20 |
Most active insiders at HBIO, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | Snider William | Dir | $103.6K | — |
| 2 | DENELSKY STEPHEN J | Dir | $48.7K | — |
| 3 | Duke John D | CEO, Dir | $25.1K | — |
| 4 | Frost Mark T | CFO | $25.0K | — |
| 5 | Benson Seth Benjamin | Dir | — | — |
| 6 | Eade Katherine A. | Dir | — | — |
| 7 | Gagnon Robert E. | Dir | — | — |
Transactions 3
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-03-23 | 2026-03-20 | HBIO | HARVARD BIOSCIENCE INC | Duke John D | CEO, Dir | A - Grant | $0.00 | +75.0K | 180.0K | +71% | $0 | |
| 2026-03-17 | 2026-03-16 | HBIO | HARVARD BIOSCIENCE INC | Duke John D | CEO, Dir | P - Purchase | $5.01 | +5,000 | 105.0K | +5% | +$25.1K | |
| M | 2025-08-11 | 2025-08-08 | HBIO | HARVARD BIOSCIENCE INC | Duke John D | CEO, Dir | A - Grant | $0.00 | +1.00M | 1.00M | New | $0 |
Purchase Sale Sale after option exercise All abbreviations