Senior insider sale
Chief Scientific Officer at NEWAMSTERDAM PHARMA CO N.V. — senior position signals high conviction
$199.5K
6K shares
What this filing means
KASTELEIN JOHANNES JACOB PIETER plans to sell 6K shares of NEWAMSTERDAM PHARMA CO N.V. valued at approximately $199.5K. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 1/5/2026ACC: 0001974494-26-000015
DirectorOfficer· Chief Scientific Officer
Since Mar 2026
6K
Shares to sell
$199.5K
Approx. market value
11.33K
Acquired (3 months)
1
Planned
Securities Acquired — Last 3 Months1
Vesting of RSU Grant
RSU Vesting
1/2/2026
11.33KTotal acquired11.33K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
1/2/2026 | Vesting of RSU Grant RSU Vesting | 11.33K | — |
| Total | 11.33K | ||
Planned & Completed Dispositions1
NASDAQPlanned
Units to sell
6K
Market value
$199.5K
1/5/2026
Total
Units
6K
Value
$199.5K
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
1/5/2026 | 6K | $199.5K | NASDAQ | Planned |
| Total | 6K | $199.5K | ||