NewAmsterdam Pharma Co N.V. (NAMS) — Insider Trading
Insider trading activity for NewAmsterdam Pharma Co N.V. sourced from SEC EDGAR Form 4 filings.
Overview
- Total insider trades: 17
- Last trade date: Oct 2, 2026
- Ticker: NAMS
Top Insiders
- Kooij Louise Frederika (Chief Accounting Officer) — 11 trades, buy: $0, sell: $3.5M
- Kastelein Johannes Jacob Piete (Affiliate) — 1 trades, buy: $0, sell: $3.5M
- Kastelein Johannes Jacob Piete (Chief Scientific Officer) — 1 trades, buy: $0, sell: $3.4M
- Kastelein Johannes Jacob Pieter (Chief Scientific Officer) — 3 trades, buy: $0, sell: $1.3M
- Davidson Michael H. (Chief Executive Officer) — 1 trades, buy: $227K, sell: $0
Recent Trades
| Date | Insider | Ticker / Company |
Type | Shares | Value |
| Sep 30, 2026 |
Kastelein Johannes Jacob Pieter |
NAMS NewAmsterdam Pharma Co N.V. |
OTHER |
50,246 |
$0 |
| Sep 30, 2026 |
Kastelein Johannes Jacob Pieter |
NAMS NewAmsterdam Pharma Co N.V. |
SELL |
50,246 |
$1.3M |
| Sep 30, 2026 |
Kastelein Johannes Jacob Pieter |
NAMS NewAmsterdam Pharma Co N.V. |
OTHER |
50,246 |
N/A |
| Sep 14, 2026 |
Davidson Michael H. |
NAMS NewAmsterdam Pharma Co N.V. |
BUY |
10,000 |
$227K |
| Aug 24, 2026 |
Kastelein Johannes Jacob Piete |
NNAMS NNAMS |
SELL |
125,000 |
$3.4M |
| Aug 24, 2026 |
Kastelein Johannes Jacob Piete |
NNAMS NNAMS |
SELL |
125,000 |
$3.5M |
| Jun 22, 2026 |
Kooij Louise Frederika |
NAMS NewAmsterdam Pharma Co N.V. |
OTHER |
15,000 |
N/A |
| Jun 22, 2026 |
Kooij Louise Frederika |
NAMS NewAmsterdam Pharma Co N.V. |
OTHER |
25,000 |
N/A |
| Jun 22, 2026 |
Kooij Louise Frederika |
NAMS NewAmsterdam Pharma Co N.V. |
SELL |
300 |
$9K |
| Jun 22, 2026 |
Kooij Louise Frederika |
NAMS NewAmsterdam Pharma Co N.V. |
SELL |
39,700 |
$1.2M |
| Jun 22, 2026 |
Kooij Louise Frederika |
NAMS NewAmsterdam Pharma Co N.V. |
OTHER |
15,000 |
$179K |
| Jun 22, 2026 |
Kooij Louise Frederika |
NAMS NewAmsterdam Pharma Co N.V. |
OTHER |
25,000 |
$273K |
| May 26, 2026 |
Kooij Louise Frederika |
NAMS NewAmsterdam Pharma Co N.V. |
OTHER |
5,000 |
N/A |
| May 26, 2026 |
Kooij Louise Frederika |
NAMS NewAmsterdam Pharma Co N.V. |
OTHER |
60,000 |
N/A |
| May 26, 2026 |
Kooij Louise Frederika |
NAMS NewAmsterdam Pharma Co N.V. |
SELL |
65,000 |
$2.3M |
| May 26, 2026 |
Kooij Louise Frederika |
NAMS NewAmsterdam Pharma Co N.V. |
OTHER |
5,000 |
$55K |
| May 26, 2026 |
Kooij Louise Frederika |
NAMS NewAmsterdam Pharma Co N.V. |
OTHER |
60,000 |
$600K |
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