Company profile
NewAmsterdam Pharma Co N.V. Insider Trading
NAMSEvery SEC Form 4 insider trading filing for NewAmsterdam Pharma Co N.V. (NAMS) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Pharmaceutical Preparations
- CIK
- 0001936258
- Filings
- 108
- Insiders
- 31
- Last filing
- 2026-09-14
Activity summary
Recent insider activity is bullish. Over the last 30 days, 5 insiders purchased shares versus 2 sales. Buying was led by Michael H. Davidson.
Three year balance
Buy and sell value by quarter, Q1 24 to Q3 26. NewAmsterdam Pharma Co N.V. insiders are net sellers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $46.7M.
90 day insight
Over the last 90 days, NewAmsterdam Pharma Co N.V. insiders bought $1.4M (9 transactions) and sold $6.6M (5 transactions).
- Most active insider: Louise Frederika Kooij with 7 transactions totaling $4.4M.
- Largest single sale: $3.4M by Johannes Jacob Pieter Kastelein on Aug 24, 2026.
Activity skews bullish — buys outpace sales.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 14, 2026 | Michael H. Davidson | NAMS | Purchase | 10,000 | $22.65 | $227K |
| Sep 4, 2026 | John W Smither | NAMS | Sale | 1,600 | $25.32 | $41K |
| Sep 1, 2026 | Robert William Gunning | NAMS | Award | 3,200 | — | — |
| Sep 1, 2026 | Robert William Gunning | NAMS | Award | 14,000 | — | — |
| Aug 24, 2026 | Johannes Jacob Pieter Kastelein | NAMS | Option Exercise | 125,000 | — | — |
45 more transactions hidden
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By total value filed.