Kooij Louise Frederika Insider Trading Activity
Kooij Louise Frederika has been net-selling over the last 12 months with 0 purchases and 14 sales across 1 company.
NAMS is the most-traded position with 14 trades. The largest single transaction was a sale of NAMS for $2.7M on Dec 23, 2025.
Performance Scorecard
Forward stock performance after each transaction by Kooij Louise Frederika. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | — | -7.8% | 29% | 14 |
| 90 days | — | -7.2% | 64% | 14 |
| 120 days | — | -12.0% | 29% | 14 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersNAMS · NewAmsterdam Pharma Co N.V.
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | ROLE |
|---|---|---|---|---|---|---|
| Jan 28, 2026 | NAMS | Sell | 32,612 | $31.80 | $1.0M | Chief Accounting Officer |
| Jan 27, 2026 | NAMS | Sell | 39,816 | $32.62 | $1.3M | Chief Accounting Officer |
| Jan 26, 2026 | NAMS | Sell | 34,091 | $32.77 | $1.1M | Chief Accounting Officer |
| Jan 26, 2026 | NAMS | Sell | 309 | $33.45 | $10K | Chief Accounting Officer |
| Jan 23, 2026 | NAMS | Sell | 12,767 | $34.37 | $439K | Chief Accounting Officer |
| Jan 23, 2026 | NAMS | Sell | 25,405 | $33.44 | $850K | Chief Accounting Officer |
| Jan 5, 2026 | NAMS | Sell | 2,647 | $33.25 | $88K | Chief Accounting Officer |
| Dec 26, 2025 | NAMS | Sell | 43,872 | $35.30 | $1.5M | Chief Accounting Officer |
| Dec 24, 2025 | NAMS | Sell | 26,011 | $35.68 | $928K | Chief Accounting Officer |
| Dec 23, 2025 | NAMS | Sell | 75,117 | $36.21 | $2.7M | Chief Accounting Officer |
| Sep 9, 2025 | NAMS | Sell | 53,104 | $25.31 | $1.3M | Chief Accounting Officer |
| Sep 9, 2025 | NAMS | Sell | 96,896 | $26.11 | $2.5M | Chief Accounting Officer |
| Sep 3, 2025 | NAMS | Sell | 18,073 | $25.09 | $453K | Chief Accounting Officer |
| Aug 25, 2025 | NAMS | Sell | 8,269 | $24.86 | $206K | Chief Accounting Officer |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| NAMS | NewAmsterdam Pharma Co N.V. | 14 | $14.6M |
Other insiders at NewAmsterdam Pharma Co N.V.
6 other tracked filers at NAMS.