Senior insider sale
Chief Scientific Officer at NEWAMSTERDAM PHARMA CO N.V. — senior position signals high conviction
$1.77M
51.48K shares
What this filing means
KASTELEIN JOHANNES JACOB PIETER plans to sell 51.48K shares of NEWAMSTERDAM PHARMA CO N.V. valued at approximately $1.77M. 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: 2/20/2026ACC: 0002085929-26-000002
DirectorOfficer· Chief Scientific Officer
Since Mar 2026
51.48K
Shares to sell
$1.77M
Approx. market value
45.48K
Acquired (3 months)
1
Planned
1 completed
Securities Acquired — Last 3 Months1
Vesting of RSU Grant
RSU Vesting
3/26/2025
45.48KTotal acquired45.48K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
3/26/2025 | Vesting of RSU Grant RSU Vesting | 45.48K | — |
| Total | 45.48K | ||
Planned & Completed Dispositions2
Completed
—Completed
Units to sell
6K
Market value
$199.5K
1/5/2026
Planned — Approximate Date
Nasdaq Global MarketPlanned
Units to sell
45.48K
Market value
$1.58M
2/20/2026
Total
Units
51.48K
Value
$1.77M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
1/5/2026 | 6K | $199.5K | — | Completed |
| Planned — Approximate Date | ||||
2/20/2026 | 45.48K | $1.58M | Nasdaq Global Market | Planned |
| Total | 51.48K | $1.77M | ||