Mack John Prosper
SEC CIK 2031699 · EDGAR
Companies
| Ticker | Company | Title | Holding | Bought | Sold | Trades | First | Last |
|---|---|---|---|---|---|---|---|---|
| OBIO | Orchestra BioMed Holdings, Inc. | Dir | 66.5K | — | — | 6 | 2024-08-07 | 2026-08-12 |
Most active insiders at OBIO, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | Sherman Darren | See Remarks, Dir | $10.7K | $257.6K |
| 2 | Hochman David P | See Remarks, Dir | $149.2K | — |
| 3 | Fain Eric S | Dir | $82.6K | — |
| 4 | Aryeh Jason | Dir | $37.5K | — |
| 5 | RTW INVESTMENTS, LP | 10% | — | $132.16 |
| 6 | Cleary Chris | Dir | — | — |
| 7 | Mack John Prosper | Dir | — | — |
| 8 | Aiello Joshua | Principal Accounting Off | — | — |
| 9 | Connealy Pamela Ann | Dir | — | — |
| 10 | Taylor Andrew Lawrence | CFO | — | — |
Transactions 6
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-08-14 16:15 | 2026-08-12 | OBIO | Orchestra BioMed Holdings, Inc. | Mack John Prosper | Dir | F - Tax | $4.42 | -4,885 | 66.5K | -7% | -$21.6K | |
| 2026-06-25 16:15 | 2026-06-23 | OBIO | Orchestra BioMed Holdings, Inc. | Mack John Prosper | Dir | A - Grant | $0.00 | +34.7K | 74.9K | +86% | $0 | |
| 2026-06-25 16:15 | 2026-06-24 | OBIO | Orchestra BioMed Holdings, Inc. | Mack John Prosper | Dir | F - Tax | $0.00 | -3,510 | 71.4K | -5% | $0 | |
| 2025-08-08 | 2025-08-07 | OBIO | Orchestra BioMed Holdings, Inc. | Mack John Prosper | Dir | A - Grant | $0.00 | +15.0K | 40.3K | +59% | $0 | |
| D | 2025-06-26 | 2025-06-24 | OBIO | Orchestra BioMed Holdings, Inc. | Mack John Prosper | Dir | A - Grant | $0.00 | +12.4K | 25.3K | +97% | $0 |
| D | 2024-08-08 | 2024-08-07 | OBIO | Orchestra BioMed Holdings, Inc. | Mack John Prosper | Dir | A - Grant | $0.00 | +12.9K | 12.9K | New | $0 |
Purchase Sale Sale after option exercise All abbreviations