$ Value
—
Shares
101,409
Price
—
Filed
Mar 9
Insider
Name
Kastelein Johannes Jacob Pieter
Title
Chief Scientific Officer
CIK
0002000389
Roles
Transaction Details
Transaction Date
2026-03-09
Code
M
Table
Non-Derivative
Ownership
Indirect
Equity Swap
No
Shares After
170,711
Footnotes
The exercise price of the option is EUR 1.16392. | 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. | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.00 per share to $30.55 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. | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.00 per share to $30.42 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. | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.00 per share to $30.80 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. | The option was granted on November 22, 2022 to replace an option originally granted on July 6, 2021 which was cancelled in connection with the consummation of NewAmsterdam Pharma Company N.V.'s business combination with Frazier Lifesciences Acquisition Corporation. 292,214 of the shares underlying the option immediately vested on the grant date. 25% of the remaining shares underlying the option vested on January 1, 2021, the one-year anniversary of vesting start date, with the remaining shares vesting in equal monthly installments thereafter for three years, subject to the Reporting Person's continued service through each such date. | The option was granted to and is held by Futurum through NAP PoolCo B.V. ("PoolCo") for the benefit of the Reporting Person. The Reporting Person exercises sole voting and investment control over the securities held by Futurum through PoolCo. PoolCo has no voting or investment control or pecuniary interest in the securities held on behalf of Futurum. Upon exercise of the option, the Ordinary Shares were issued to Futurum directly, pursuant to a written agreement among Futurum, PoolCo and the Issuer.
Filing Info
Kastelein Johannes Jacob Pieter's History
| Date | Ticker | Type | Value |
|---|---|---|---|
| 2026-03-09 | NAMS | M | — |
| 2026-03-09 | NAMS | ▼ | $3.1M |
| 2026-03-09 | NAMS | M | $0 |
| 2026-03-06 | NAMS | M | — |
| 2026-03-06 | NAMS | ▼ | $2.9M |
| 2026-03-06 | NAMS | M | $0 |
| 2026-03-05 | NAMS | M | — |
| 2026-03-05 | NAMS | ▼ | $3.2M |
| 2026-03-05 | NAMS | M | $0 |
| 2026-02-20 | NAMS | ▼ | $514K |
Other Insiders at NAMS (90d)
| Insider | Bought | Sold | Last |
|---|---|---|---|
| LANGE LOUIS G | — | $2.2M | 2026-03-11 |
|
Davidson Michael H.
Chief Executive Officer
|
— | $25.3M | 2026-03-02 |
|
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
|
— | $10.7M | 2026-03-09 |
|
Kooij Louise Frederika
Chief Accounting Officer
|
— | $4.8M | 2026-01-28 |