Mack John Prosper (CIK 2031699) reported 5 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-14). Recent activity: Sell OBIO (4,885 shares), Buy OBIO (34,653 shares), Sell OBIO (3,510 shares), Buy OBIO (15,000 shares), Buy OBIO (12,422 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-14 | Orchestra BioMed Holdings, Inc. (OBIO) | Director | Sell | 4,885 | $21,592 |
| 2026-06-25 | Orchestra BioMed Holdings, Inc. (OBIO) | Director | Buy | 34,653 | $0 |
| 2026-06-25 | Orchestra BioMed Holdings, Inc. (OBIO) | Director | Sell | 3,510 | $0 |
| 2025-08-08 | Orchestra BioMed Holdings, Inc. (OBIO) | Director | Buy | 15,000 | $0 |
| 2025-06-26 | Orchestra BioMed Holdings, Inc. (OBIO) | Director | Buy | 12,422 | $0 |
Source: SEC Form 4 filings · as of 2026-08-14