Kastelein Johannes Jacob Pieter
Insider transactions at 1 company
This page shows all SEC Form 4 filings attributed to Kastelein Johannes Jacob Pieter. Form 4 disclosures are required whenever a corporate insider — director, officer, or 10%+ shareholder — buys, sells, or receives company stock. Each row represents a separate reported transaction. All data is sourced directly from the SEC EDGAR public database.
| Company | Title | Type | Shares | Price | Value | Date |
|---|---|---|---|---|---|---|
| NAMSW | Chief Scientific Officer | Sale | 42,342 | $25.08 | $1,061,937 | Aug 21, 2025 |
| NAMSW | Chief Scientific Officer | Award / Grant | 19,302 | — | — | Mar 26, 2025 |
| NAMSW | Chief Scientific Officer | Option Exercise | 150,000 | — | — | Mar 24, 2025 |
| NAMSW | Chief Scientific Officer | Award / Grant | 34,000 | — | — | Jan 7, 2025 |
| NAMSW | Chief Scientific Officer | Option Exercise | 201,673 | — | — | Mar 26, 2024 |