Summary
Updated Aug 30, 2026
Louis G. Lange files SEC Form 4 reports at NewAmsterdam Pharma Co N.V. (NAMS). 6 SEC Form 4 filings on record going back to 2025, most recently on 12 March 2026. Most recent open-market trade: sold $14K of NAMS on 12 March 2026. Lifetime open-market sales: $2.19M.
Recent Transactions
8Every recent SEC Form 4 transaction Louis G. Lange has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Louis G. Lange files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Michael H. Davidson - $25.33M of NAMS open-market activity in the last 12 months
- Louise Frederika Kooij - $21.08M of NAMS open-market activity in the last 12 months
- Johannes Jacob Pieter Kastelein - $14.26M of NAMS open-market activity in the last 12 months
- Mayur Ian Somaiya - $3.43M of NAMS open-market activity in the last 12 months
- James N. Topper - $47K of NAMS open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Louis G. Lange?
Louis G. Lange is a corporate insider of NewAmsterdam Pharma Co N.V. (NAMS). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Louis G. Lange last file a Form 4?
The most recent primary Form 4 on record is dated 12 March 2026, one of 6 filings going back to 2025.
Has Louis G. Lange been buying or selling stock?
Recorded transactions: 0 open-market purchases and 3 open-market sales ($2.19M) across all tracked filings.
Where can I see all of Louis G. Lange's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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