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Buy NAMSW
Newamsterdam Pharma Company N.v Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be negative at -71.47. In total, the insiders bought 4.26M and sold 1.75M NAMSW shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.
Insider Power
|
-71.47 |
| ● Buy | 4.26M shares |
| ● Sell | 1.75M shares |
|
63% Buy Activity
Moderate Negative Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
May 26, 2026 Sell |
Kooij Louise Frederika Chief Accounting Officer |
65 000 Value: $2.32M |
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|
May 26, 2026 Buy |
Kooij Louise Frederika Chief Accounting Officer |
5 000 Value: $54.5K |
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|
May 26, 2026 Buy |
Kooij Louise Frederika Chief Accounting Officer |
60 000 Value: $600.0K |
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May 26, 2026 Buy |
Kooij Louise Frederika Chief Accounting Officer |
60 000 Value: $600.0K |
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|
May 26, 2026 Buy |
Kooij Louise Frederika Chief Accounting Officer |
5 000 Value: $54.5K |
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|
Mar 11, 2026 Sell |
Lange Louis G Director |
44 173 Value: $1.34M |
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Mar 11, 2026 Sell |
Lange Louis G Director |
446 Value: $13.9K |
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Mar 09, 2026 Sell |
Lange Louis G Director |
44 619 Value: $513.1K |
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|
Mar 09, 2026 Buy |
Lange Louis G Director |
44 619 Value: $513.1K |
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Mar 09, 2026 Buy |
Kastelein Johannes Jacob Pieter Chief Scientific Officer |
101 409 Value: $1.87M |
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Mar 09, 2026 Buy |
Kastelein Johannes Jacob Pieter Chief Scientific Officer |
101 409 Value: $1.87M |
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Mar 09, 2026 Sell |
Kastelein Johannes Jacob Pieter Chief Scientific Officer |
101 409 Value: $3.07M |
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Mar 06, 2026 Sell |
Lange Louis G Director |
28 186 Value: $829.0K |
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Mar 06, 2026 Sell |
Kastelein Johannes Jacob Pieter Chief Scientific Officer |
94 124 Value: $2.85M |
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Mar 06, 2026 Buy |
Kastelein Johannes Jacob Pieter Chief Scientific Officer |
94 124 Value: $1.75M |
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Mar 06, 2026 Buy |
Kastelein Johannes Jacob Pieter Chief Scientific Officer |
94 124 Value: $1.75M |
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Mar 05, 2026 Buy |
Kastelein Johannes Jacob Pieter Chief Scientific Officer |
104 467 Value: $1.99M |
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Mar 05, 2026 Buy |
Kastelein Johannes Jacob Pieter Chief Scientific Officer |
104 467 Value: $1.99M |
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Mar 05, 2026 Sell |
Kastelein Johannes Jacob Pieter Chief Scientific Officer |
104 467 Value: $3.17M |
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Mar 02, 2026 Buy |
Davidson Michael H. Chief Executive Officer |
443 707 Value: $10.8M |
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Mar 02, 2026 Buy |
Davidson Michael H. Chief Executive Officer |
443 707 Value: $10.8M |
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Mar 02, 2026 Sell |
Davidson Michael H. Chief Executive Officer |
443 707 Value: $14.8M |
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Feb 26, 2026 Sell |
Davidson Michael H. Chief Executive Officer |
17 924 Value: $617.3K |
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Feb 26, 2026 Sell |
Davidson Michael H. Chief Executive Officer |
165 408 Value: $5.56M |
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Feb 26, 2026 Buy |
Davidson Michael H. Chief Executive Officer |
183 332 Value: $4.76M |
About Insider Power
Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.
It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.
While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.
* October 6th, 2025 - Tested on 5562 stocks
