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NAMS Sale Disclosure
Kastelein Johannes Jacob Pieter · SEC Form 4 · Filed Aug 25, 2026
Sale
Calculated transaction value
$3.36M
Kastelein Johannes Jacob Pieter Chief Scientific Officer
NAMS
Transaction date
Aug 24, 2026
Public filing date
Aug 25, 2026
Filing lag
Filed 1 day later
NAMS daily price context
Close on/before transaction
$26.85
Aug 24, 2026
First close after public filing
$27.4
Aug 26, 2026
30-day return after filing
-17.01%
Through Sep 24, 2026
Source details
- Reported owner
- Not disclosed
- Source asset code
- Security
- Security
- Ordinary Shares
- Quantity / price
- 125,000 shares @ $26.91
- SEC ownership
- Indirect
- Transaction code
- S
- Form
- 4
- Filing identifier
- 0001193125-26-365202
Filing cohort
Transactions in this filing
Showing 3 of 3
Trades
3
Issuers
1
Estimated value
$3.36M
Buys / sales
0 / 1
| Issuer | Transaction | Traded | Value |
|---|---|---|---|
| Newamsterdam Pharma Co N.v. NAMS | Exercise | Aug 24, 2026 | Not reported |
| Newamsterdam Pharma Co N.v. NAMS | Exercise | Aug 24, 2026 | $0 |
| Newamsterdam Pharma Co N.v. NAMS Current | Sale | Aug 24, 2026 | $3.36M |