Kastelein Johannes Jacob Pieter
CIK 2000389
Transactions on file
11
Tickers traded
Recent activity
| Filed | Txn date | Issuer | Roles | Code | Shares | Value | % since Filing | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-08-25 | 2026-08-24 | NAMS NewAmsterdam Pharma Co N.V. | Chief Scientific Officer | Sale | 125,000 | $3.36M | -15.3% | open → |
| 2026-08-25 | 2026-08-24 | NAMS NewAmsterdam Pharma Co N.V. | Chief Scientific Officer | Exer. | 125,000 | $0.00 | — | open → |
| 2025-01-07 | 2025-01-07 | NAMS NewAmsterdam Pharma Co N.V. | OfficerDirector Chief Scientific Officer | Grant | 34,000 | — | — | open → |
| 2025-03-26 | 2025-03-24 | NAMS NewAmsterdam Pharma Co N.V. | OfficerDirector Chief Scientific Officer | Exer. | 150,000 | — | — | open → |
| 2025-03-28 | 2025-03-26 | NAMS NewAmsterdam Pharma Co N.V. | OfficerDirector Chief Scientific Officer | Grant | 19,302 | $0.00 | — | open → |
| 2025-03-28 | 2025-03-26 | NAMS NewAmsterdam Pharma Co N.V. | OfficerDirector Chief Scientific Officer | Exer. | 45,481 | $0.00 | — | open → |
| 2026-02-24 | 2026-02-20 | NAMS NewAmsterdam Pharma Co N.V. | Chief Scientific Officer | Sale | 30,789 | $1.09M | -35.7% | open → |
| 2026-02-24 | 2026-02-20 | NAMS NewAmsterdam Pharma Co N.V. | Chief Scientific Officer | Sale | 14,692 | $514.2K | -34.9% | open → |
| 2025-08-25 | 2025-08-22 | NAMS NewAmsterdam Pharma Co N.V. | OfficerDirector Chief Scientific Officer | Sale | 42,342 | $1.06M | -9.1% | open → |
| 2025-08-25 | 2025-08-22 | NAMS NewAmsterdam Pharma Co N.V. | OfficerDirector Chief Scientific Officer | Sale | 7,658 | $195.2K | -10.6% | open → |
| 2025-08-25 | 2025-08-21 | NAMS NewAmsterdam Pharma Co N.V. | OfficerDirector Chief Scientific Officer | Sale | 50,000 | $1.21M | -6.1% | open → |
