Insider · CIK 0002000389
Johannes Jacob Pieter Kastelein
Files at: NAMS. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 24, 2026 SForm 4 → | Aug 25, 4:30 pm EDT | NewAmsterdam Pharma Co N.V.NAMS | 125,000 | $26.91 | $3,363,750 | 69,302 | −64.3% | 10b5-1 |
| Aug 24, 2026 MForm 4 → | Aug 25, 4:30 pm EDT | NewAmsterdam Pharma Co N.V.NAMS | 125,000 | — | — | 194,302 | — | 10b5-1 |
Reported trades — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 24, 2026 MForm 4 → | Aug 25, 4:30 pm EDT | NewAmsterdam Pharma Co N.V.NAMS | 125,000 | — | — | 395,229 | — | 10b5-1 |