Kastelein Johannes Jacob Pieter
NewAmsterdam Pharma Company N.V. · Chief Scientific Officer
Kastelein Johannes Jacob Pieter is listed in filings as Chief Scientific Officer at NewAmsterdam Pharma Company N.V.. This profile follows SEC Form 4 activity through Mar 9, 2026, including sale activity. Recent filings connect the profile to NewAmsterdam Pharma Company N.V. (NAMS). The current snapshot covers public activity from Jan 6, 2025 to Mar 9, 2026. Reported amounts are shown as $3.1M to $3.2M. The page organizes purchases, sales, issuer links, reported share activity, and filing evidence for review as public disclosure data.
History Trades
| Company | Value | Action | Price | Last Price |
|---|---|---|---|---|
| $3M94.1k shares | SellMar 6, 2026 | $30.32 | $31.68 | |
| $3M104.5k shares | SellMar 5, 2026 | $30.30 | $31.68 | |
| $1M30.8k shares | SellFeb 20, 2026 | $35.46 | $31.68 | |
| $514k14.7k shares | SellFeb 20, 2026 | $35.00 | $31.68 | |
| $200k6k shares | SellJan 5, 2026 | $33.25 | $31.68 | |
| $1M42.3k shares | SellAug 22, 2025 | $25.08 | $31.68 | |
| $195k7.7k shares | SellAug 22, 2025 | $25.49 | $31.68 | |
| $1M50k shares | SellAug 21, 2025 | $24.29 | $31.68 |