Form 4 for NAMS NewAmsterdam Pharma Co N.V.
Accepted 2025-08-25 00:00:00 ET · period of report 2025-08-21 · accession 0000950170-25-111241 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MI | 2025-08-25 | 2025-08-21+ | NAMS | Kastelein Johannes Jacob Pieter | CSO, Dir | S - Sale | $24.72 | -100.0K | 77.0K | -57% | -$2.47M |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Ordinary Shares | 2025-08-21 | S | D | 50,000 | $24.29 | 119,302 | I See footnote | — | — | (F1) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.73 per share to $24.57 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold in each transaction. (F2) The ordinary shares are held by Futurum B.V. ("Futurum") for the benefit of the Reporting Person. The Reporting Person exercises sole voting and investment control over the ordinary shares held by Futurum. |
| 2 | Common | Ordinary Shares | 2025-08-22 | S | D | 7,658 | $25.49 | 69,302 | I See footnote | — | — | (F4) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.39 per share to $25.62 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold in each transaction. (F2) The ordinary shares are held by Futurum B.V. ("Futurum") for the benefit of the Reporting Person. The Reporting Person exercises sole voting and investment control over the ordinary shares held by Futurum. |
| 3 | Common | Ordinary Shares | 2025-08-22 | S | D | 42,342 | $25.08 | 76,960 | I See footnote | — | — | (F3) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.39 per share to $25.35 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold in each transaction. (F2) The ordinary shares are held by Futurum B.V. ("Futurum") for the benefit of the Reporting Person. The Reporting Person exercises sole voting and investment control over the ordinary shares held by Futurum. |